JP2006247892A - Joining structure of two members, joining method of them, gas container and its manufacturing method - Google Patents

Joining structure of two members, joining method of them, gas container and its manufacturing method Download PDF

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Publication number
JP2006247892A
JP2006247892A JP2005064196A JP2005064196A JP2006247892A JP 2006247892 A JP2006247892 A JP 2006247892A JP 2005064196 A JP2005064196 A JP 2005064196A JP 2005064196 A JP2005064196 A JP 2005064196A JP 2006247892 A JP2006247892 A JP 2006247892A
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JP
Japan
Prior art keywords
laser
joining
resin
liner
male screw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2005064196A
Other languages
Japanese (ja)
Inventor
Masaaki Amano
正明 天野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP2005064196A priority Critical patent/JP2006247892A/en
Priority to PCT/JP2006/302682 priority patent/WO2006095546A1/en
Priority to US11/883,799 priority patent/US20080187697A1/en
Publication of JP2006247892A publication Critical patent/JP2006247892A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B29C65/1683—Laser beams making use of an absorber or impact modifier coated on the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/561—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using screw-threads being integral at least to one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/58—Snap connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/116—Single bevelled joints, i.e. one of the parts to be joined being bevelled in the joint area
    • B29C66/1162—Single bevel to bevel joints, e.g. mitre joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12463—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being tapered
    • B29C66/12464—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being tapered being V-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/543—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/65—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles with a relative motion between the article and the welding tool
    • B29C66/652—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles with a relative motion between the article and the welding tool moving the welding tool around the fixed article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer
    • B29C66/72341—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer for gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
    • F17C1/04—Protecting sheathings
    • F17C1/06—Protecting sheathings built-up from wound-on bands or filamentary material, e.g. wires
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/16—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge constructed of plastics materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7154—Barrels, drums, tuns, vats
    • B29L2031/7156—Pressure vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/054—Size medium (>1 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/056—Small (<1 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0604—Liners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0614—Single wall
    • F17C2203/0617—Single wall with one layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0614—Single wall
    • F17C2203/0619—Single wall with two layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F17C2203/066—Plastics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F17C2203/0663—Synthetics in form of fibers or filaments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0305—Bosses, e.g. boss collars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/21—Shaping processes
    • F17C2209/2109—Moulding
    • F17C2209/2118—Moulding by injection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/221—Welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/228—Assembling processes by screws, bolts or rivets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/23—Manufacturing of particular parts or at special locations
    • F17C2209/232—Manufacturing of particular parts or at special locations of walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/012—Hydrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/036—Very high pressure (>80 bar)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/011—Improving strength
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0184—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • General Engineering & Computer Science (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joining structure of two members capable of properly joining the end parts of a pair of resin members mutually by laser welding in a state that the mutual positional shift of the end parts of the resin members is simply suppressed, a joining method of two members, a gas container and its manufacturing method. <P>SOLUTION: A male screw 21 is provided to the almost cylindrical end part 12 of the resin member 1 and a female screw 41 is provided to the almost cylindrical end part 32 of the resin member 2. The male screw 21 is irradiated with a laser beam in the state threaded with the female screw 41 to form the joining structure of two members of which the end parts 12 and 32 are joined by laser welding. Further, this joining structure is adapted to the resin liner 111 of the gas container 101 to join liner constituent members 121 and 122 mutually in a threaded state by laser welding. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、一対の樹脂部材の略円筒状の端部同士を接合する二部材の接合構造および接合方法に関するものである。また本発明は、樹脂ライナが複数のライナ構成部材を接合してなるガス容器に関し、特にライナ構成部材の接合される端部が略円筒状であるガス容器およびその製造方法に関するものである。   The present invention relates to a two-member joining structure and joining method for joining the substantially cylindrical ends of a pair of resin members. The present invention also relates to a gas container in which a resin liner joins a plurality of liner constituent members, and more particularly to a gas container in which an end portion of a liner constituent member is substantially cylindrical and a method for manufacturing the same.

従来、軽量化等の観点から、配管などを構成するパイプ形状品や、ガス容器の内殻（ライナ）を樹脂化して樹脂成形品とすることが行われる。この種の樹脂成形品は、予め分割して成形された分割成形品を互いに接合することで構成されることが多く、その場合の接合方法としてレーザ溶着方法が利用されている。   Conventionally, from the viewpoint of weight reduction or the like, a pipe-shaped product constituting a pipe or the like and an inner shell (liner) of a gas container are made into a resin molded product. This type of resin molded product is often configured by joining divided molded products that have been divided and molded in advance, and a laser welding method is used as a joining method in that case.

例えば特許文献１には、一対のパイプ成形品の端部同士をレーザ溶着により接合する構造が記載されている。この接合構造は、一方のパイプ成形品の端部外面に形成したテーパ状接合面を、他方のパイプ成形品の端部内面に形成した逆テーパ状接合面に当接させ、この接触状態でレーザを照射して接合面同士をレーザ溶着により接合したものである。
特開２００４−９０６３０号公報（第１図および第２頁） For example, Patent Document 1 describes a structure in which ends of a pair of pipe molded products are joined by laser welding. In this joining structure, the tapered joining surface formed on the outer surface of the end of one pipe molded product is brought into contact with the reverse tapered joining surface formed on the inner surface of the end of the other pipe molded product, and in this contact state, the laser is joined. Are bonded to each other by laser welding.
JP 2004-90630 A (FIGS. 1 and 2)

このような従来の接合構造は、テーパ状・逆テーパ状の接合面としているため、例えば薄肉のパイプ成形品同士の接合であっても、その接合面積を増大させることができる点では有用である。しかしながら、レーザの照射は、両者の接合面を単に当接させた状態で行われるため、レーザ照射時に接合面同士の当接がずれる可能性があり、それにより接合不良となるおそれがあった。
もっとも、この接合不良の問題を解消するべく、端部同士の接触状態を維持するための加圧治具を用意することも考えられるが、コストがかかる上に煩雑となる。 Since such a conventional joining structure has a tapered / inverse tapered joining surface, it is useful in that the joining area can be increased even when joining thin pipe molded products, for example. . However, since the laser irradiation is performed in a state in which both the bonding surfaces are in contact with each other, there is a possibility that the bonding surfaces are not in contact with each other at the time of laser irradiation, which may cause a bonding failure.
Of course, in order to solve this problem of poor bonding, it is conceivable to prepare a pressure jig for maintaining the contact state between the ends, but this is costly and complicated.

本発明は、一対の樹脂部材の端部同士の位置ずれを簡易に抑制した状態で、その端部同士をレーザ溶着により適切に接合することができる二部材の接合構造および接合方法を提供することをその目的としている。   The present invention provides a two-member joining structure and joining method capable of appropriately joining the end portions by laser welding in a state in which positional deviation between the end portions of a pair of resin members is easily suppressed. Is the purpose.

また本発明は、この二部材の接合構造をガス容器の樹脂ライナに適用して、ライナ構成部材の端部同士の位置ずれを抑制した状態で、その端部同士をレーザ溶着により適切に接合することができるガス容器およびその製造方法を提供することをその目的としている。   Moreover, this invention applies this two-member joining structure to the resin liner of a gas container, and joins the edge parts appropriately by laser welding in the state which suppressed the position shift of the edge parts of a liner structural member. It is an object of the present invention to provide a gas container and a manufacturing method thereof.

本発明の二部材の接合構造は、少なくとも略円筒状の端部を有する一対の樹脂部材を、その端部同士を係合構造により係合してレーザ溶着により接合する二部材の接合構造であって、係合構造は、一方の樹脂部材の端部に設けられたおねじと、他方の樹脂部材の端部に設けられ、おねじに螺合されるめねじと、を有するものである。   The two-member joining structure of the present invention is a two-member joining structure in which a pair of resin members having at least substantially cylindrical end portions are joined by laser welding with their end portions engaged by an engagement structure. The engagement structure includes a male screw provided at an end portion of one resin member and a female screw provided at an end portion of the other resin member and screwed to the male screw.

この構成によれば、各樹脂部材の接合部位となる略円筒状の端部におねじまたはめねじを設けているため、これらを螺合した状態でレーザを照射することができる。これにより、レーザ照射時に端部同士を密着するように保持することができるため、加圧治具などを用いずとも、端部同士の位置ずれを好適に抑制することができる。したがって、端部同士をレーザ溶着により良好に接合することができる。また、レーザ溶着後の接合部は、ねじ締結によっても接合された状態となるため、接合部の強度が向上し得る。さらに、略円筒状の端部同士を接合する際には、通常心合わせが煩雑となるところ、おねじとめねじとの螺合構造によって、簡単に心合わせをすることができる。   According to this configuration, since the screw or the female screw is provided at the substantially cylindrical end portion that becomes the joining portion of each resin member, it is possible to irradiate the laser in a state where they are screwed together. Thereby, since it can hold | maintain so that edge parts may closely_contact | adhere at the time of laser irradiation, the position shift of edge parts can be suppressed suitably, without using a pressurization jig etc. Therefore, the end portions can be favorably bonded by laser welding. Moreover, since the joined portion after laser welding is also joined by screw fastening, the strength of the joined portion can be improved. Furthermore, when joining the substantially cylindrical ends, the centering is usually complicated. However, the centering can be easily performed by the screwed structure of the male screw and the female screw.

ここで、「少なくとも略円筒状の端部を有する樹脂部材」には、樹脂部材が全体として円筒状、環状、お碗状、ドーム状等の形状を有することが含まれる。   Here, the “resin member having at least a substantially cylindrical end” includes that the resin member as a whole has a shape such as a cylindrical shape, an annular shape, a bowl shape, or a dome shape.

上記した本発明の接合構造の場合、めねじが設けられた端部の内周面は、傾斜した接合面を有し、おねじが設けられた端部の外周面は、接合面に整合し且つこれに当接する接合面を有し、この接合面同士がレーザ溶着により接合されていることが、好ましい。   In the case of the joint structure of the present invention described above, the inner peripheral surface of the end portion provided with the female screw has an inclined joint surface, and the outer peripheral surface of the end portion provided with the male screw is aligned with the joint surface. And it is preferable that it has a joint surface contact | abutted to this and these joint surfaces are joined by laser welding.

この構成によれば、接合面を傾斜した面で構成することで、接合面同士の接触面積（接合面積）を増大させることができると共に、接合面同士の心合わせに有用となり得る。   According to this configuration, by configuring the joint surfaces with inclined surfaces, the contact area between the joint surfaces (joint area) can be increased, and the joint surfaces can be useful for alignment between the joint surfaces.

この場合、螺合状態のおねじ及びめねじは、接合面同士と共にレーザ溶着により接合されていることが、好ましい。   In this case, it is preferable that the male screw and the female screw are joined together by the laser welding together with the joining surfaces.

この構成によれば、接合面積をより一層増大させることができると共に、レーザ溶着後の接合部におけるシール性を高めることができる。   According to this configuration, the joint area can be further increased, and the sealing performance at the joint after laser welding can be enhanced.

これらの場合、めねじが設けられた端部は、レーザ透過性の樹脂で形成され、おねじが設けられた端部は、レーザ吸収性の樹脂で形成されていることが、好ましい。   In these cases, it is preferable that the end portion provided with the female screw is formed of a laser-transmitting resin, and the end portion provided with the male screw is formed of a laser-absorbing resin.

この構成によれば、レーザ透過性の端部側からレーザを照射すると、レーザ吸収性の端部が加熱溶融すると共に、その端部からの熱伝達によりレーザ透過性の端部が加熱溶融する。このように、レーザに対する透過性または吸収性の特性を端部に持たせておくことで、端部同士を適切に接合することができる。なお、この種のレーザに対する特性を端部のみに持たせてもよいが、端部を含む樹脂部材の全体に持たせる方が、樹脂部材を簡易に製造し得る。   According to this configuration, when the laser is irradiated from the laser-transmitting end portion side, the laser-absorbing end portion is heated and melted, and the laser-transmitting end portion is heated and melted by heat transfer from the end portion. As described above, the end portions can be appropriately joined to each other by providing the end portions with a laser transmitting or absorbing property. In addition, although it is sufficient to give the characteristic with respect to this kind of laser only to an edge part, the direction which gives the whole resin member including an edge part can manufacture a resin member easily.

これらの場合、おねじ及びめねじは、金属材料で形成されていることが、好ましい。   In these cases, it is preferable that the male screw and the female screw are made of a metal material.

この構成によれば、おねじ及びめねじを樹脂で形成する場合に比べて、強固な締結力を得ることができる。なお、おねじ又はめねじは、樹脂部材の端部に接着等により設けてもよいし、樹脂部材にインサート成形されることで、樹脂部材の端部に設けられてもよい。   According to this configuration, a firm fastening force can be obtained as compared with the case where the male screw and the female screw are formed of resin. The male screw or the female screw may be provided at the end of the resin member by adhesion or the like, or may be provided at the end of the resin member by insert molding on the resin member.

これらの場合、おねじはテーパおねじからなり、めねじはテーパめねじからなることが、好ましい。   In these cases, it is preferable that the male screw is a tapered male screw and the female screw is a tapered female screw.

この構成によれば、テーパねじ接続となるため、テーパおねじおよびテーパめねじの一方のねじ山が螺合時に圧潰される。これにより、ストレートねじ接続する場合に比べて、レーザ溶着後の接合部におけるシール性をより一層向上することができる。   According to this configuration, since it is a taper screw connection, one screw thread of the taper male screw and the taper female screw is crushed during screwing. Thereby, compared with the case where it connects with a straight screw, the sealing performance in the junction part after laser welding can be improved further.

本発明の二部材の接合方法は、少なくとも略円筒状の端部を有する一対の樹脂部材を、その端部同士を接合する二部材の接合方法であって、その一方の樹脂部材の端部に設けたおねじと、その他方の樹脂部材の端部に設けためねじとを螺合した状態でレーザを照射して、この端部同士をレーザ溶着により接合するものである。   The two-member joining method of the present invention is a two-member joining method in which a pair of resin members having at least substantially cylindrical end portions are joined to each other, and at one end of the one resin member. Laser irradiation is performed in a state where the provided male screw and the screw for providing at the end of the other resin member are screwed together, and the ends are joined together by laser welding.

この構成によれば、端部同士を螺合した状態でレーザを照射するため、加圧治具などを用いずとも、端部同士の位置ずれを好適に抑制した状態で、これをレーザ溶着により良好に接合することができる。また、レーザ溶着後における接合部の強度を向上し得る点や、端部同士を簡単に心合わせすることができる点も、上記と同様である。   According to this configuration, since the laser is irradiated in a state where the ends are screwed together, the position deviation between the ends is suitably suppressed without using a pressurizing jig or the like. Good bonding can be achieved. Moreover, the point which can improve the intensity | strength of the junction part after laser welding, and the point which can align center part easily are the same as the above.

この場合、おねじが設けられた端部の接合面と、めねじが設けられた端部の接合面とが接触するまで、おねじおよびめねじを螺合した後、この接合面同士をレーザ溶着により接合することが、好ましい。   In this case, after screwing the male screw and the female screw until the joint surface of the end portion provided with the male screw comes into contact with the joint surface of the end portion provided with the female screw, the joint surfaces are laser-bonded to each other. It is preferable to join by welding.

この構成によれば、接合面同士が接触するまで螺進しているため、レーザ溶着の対象となる接合面同士を確実に密着させることができる。これにより、接合面同士のレーザ溶着を良好に且つ確実に行うことができる。   According to this configuration, since the joint surfaces are screwed until they come into contact with each other, the joint surfaces to be laser welded can be reliably brought into close contact with each other. Thereby, the laser welding of the joining surfaces can be performed satisfactorily and reliably.

この場合、接合面同士を周方向に亘ってレーザ溶着により接合することが、好ましい。   In this case, it is preferable to join the joining surfaces to each other by laser welding in the circumferential direction.

この構成によれば、接合面同士の全周がレーザによりライン溶接される。   According to this configuration, the entire circumference of the joint surfaces is line welded by the laser.

これらの場合、螺合状態のおねじ及びめねじを接合面同士と共にレーザ溶着により接合することが、好ましい。また、一方の樹脂部材の端部をレーザ透過性の樹脂で形成し、且つ他方の樹脂部材の端部をレーザ吸収性の樹脂で形成しておき、このレーザ透過性の端部側からレーザ吸収性の端部に向けてレーザを照射して、接合面同士をレーザ溶着により接合することが、好ましい。さらに、おねじおよびめねじは、金属材料で形成されていることが、好ましい。また、おねじは、テーパおねじからなり、めねじは、テーパめねじからなることが、好ましい。   In these cases, it is preferable that the male screw and the female screw are joined together by laser welding together with the joining surfaces. Further, the end of one resin member is formed of a laser-transmitting resin, and the end of the other resin member is formed of a laser-absorbing resin, and laser absorption is performed from this laser-transmitting end portion side. It is preferable that the joining surfaces are joined by laser welding by irradiating a laser toward the end of the property. Furthermore, it is preferable that the male screw and the female screw are made of a metal material. Moreover, it is preferable that a male screw consists of a taper male screw, and a female screw consists of a taper female screw.

本発明のガス容器は、一対の樹脂部材を一対のライナ構成部材として、上記した本発明の二部材の接合方法を用い、ライナ構成部材同士を接合して構成した樹脂ライナと、樹脂ライナの外周に配置された補強層と、を有するものである。   The gas container of the present invention uses a resin member as a pair of liner constituent members, the resin liner formed by joining the liner constituent members using the above-described two-member joining method of the present invention, and the outer periphery of the resin liner. And a reinforcing layer disposed on the surface.

この構成によれば、一対のライナ構成部材を一体的に接合するのに上記の接合方法を利用しているため、良好に接合された樹脂ライナを構成することができる。この樹脂ライナをガス容器が備えているため、ガス容器の気密性や生産性などを高めることができる。   According to this configuration, since the above-described bonding method is used to integrally bond the pair of liner constituent members, a well-bonded resin liner can be configured. Since the gas container is provided with this resin liner, it is possible to improve the gas tightness and productivity of the gas container.

本発明の他のガス容器は、樹脂ライナを有するガス容器であって、樹脂ライナは、少なくとも略円筒状の端部を有する複数のライナ構成部材を接合してなり、且つライナ構成部材同士の接合部分には、この略円筒状の端部同士を係合する係合構造と、この略円筒状の端部同士をレーザ溶着により接合したレーザ溶着部と、が設けられ、係合構造は、端部同士の一方に設けられたおねじと、端部同士の他方に設けられ、おねじに螺合されるめねじと、を有するものである。   Another gas container of the present invention is a gas container having a resin liner, and the resin liner is formed by joining a plurality of liner constituent members having at least substantially cylindrical end portions, and joining the liner constituent members to each other. The portion is provided with an engagement structure for engaging the substantially cylindrical ends with each other, and a laser welded portion in which the substantially cylindrical ends are joined by laser welding. It has a male screw provided in one of the parts and a female screw provided in the other of the end parts and screwed into the male screw.

この構成によれば、ライナ構成部材同士を接合する樹脂ライナの製造過程において、ライナ構成部材の端部同士を係合構造により係合して、この係合状態でレーザを照射することができる。これにより、加圧治具などを用いずとも、端部同士の位置ずれを好適に抑制することができ、端部同士をレーザ溶着により良好に接合することができる。特に、係合構造が螺合構造となるため、端部同士を密着するように保持することができると共に、接合の際の心合わせが容易となる。また、レーザ溶着後においても、その接合部は、レーザ溶着部に加えて、係合構造により係合されているため、接合部の強度が向上し得る。
ここで、レーザ溶着部とは、接合された一方のライナ構成部材の端部の一部と、他方のライナ構成部材の端部の一部とが溶融して形成された部位をいう。 According to this structure, in the manufacturing process of the resin liner which joins liner structural members, the edge parts of a liner structural member can be engaged by an engagement structure, and a laser can be irradiated in this engagement state. Thereby, even if it does not use a pressurization jig | tool etc., the position shift of edge parts can be suppressed suitably, and edge parts can be favorably joined by laser welding. In particular, since the engaging structure is a screwed structure, the end portions can be held in close contact with each other, and centering at the time of joining becomes easy. Further, even after laser welding, since the joint is engaged by the engagement structure in addition to the laser weld, the strength of the joint can be improved.
Here, the laser welding portion refers to a portion formed by melting a part of the end portion of one liner constituent member and a part of the end portion of the other liner constituent member.

この場合、めねじが設けられた端部の内周面は、傾斜した接合面を有し、おねじが設けられた端部の外周面は、接合面に整合し且つこれに当接する接合面を有し、レーザ溶着部は、この接合面同士が溶融して形成されていることが、好ましい。   In this case, the inner peripheral surface of the end portion provided with the female screw has an inclined joint surface, and the outer peripheral surface of the end portion provided with the male screw aligns with and contacts the joint surface. It is preferable that the laser weld portion is formed by melting the joint surfaces.

この構成によれば、上記同様に、接合面同士の接触面積（接合面積）を増大させること等ができる。   According to this configuration, the contact area (bonding area) between the bonding surfaces can be increased as described above.

また上記本発明のガス容器においては、上記の二部材の接合構造と同様に、めねじが設けられた端部は、レーザ透過性の樹脂で形成され、おねじが設けられた端部は、レーザ吸収性の樹脂で形成されていることが、好ましい。また、おねじおよびめねじは、金属材料で形成されていることが、好ましい。さらに、おねじはテーパおねじからなり、めねじはテーパめねじからなることが、好ましい。   Further, in the gas container of the present invention, the end portion provided with the female screw is formed of a laser-transmitting resin, and the end portion provided with the male screw is similar to the above-described two-member joint structure. It is preferable to be formed of a laser-absorbing resin. The male screw and the female screw are preferably formed of a metal material. Further, it is preferable that the male screw is a tapered male screw and the female screw is a tapered female screw.

本発明のガス容器の製造方法は、少なくとも略円筒状の端部を有するライナ構成部材を複数個接合してなる樹脂ライナを有するガス容器の製造方法であって、互いに接合されるべき一方のライナ構成部材の略円筒状の端部と、他方のライナ構成部材の略円筒状の端部とを係合する係合工程と、係合工程の後、レーザを照射してこの端部同士をレーザ溶着により接合する照射工程と、を有し、係合工程は、一方のライナ構成部材の略円筒状の端部に設けたおねじと、他方のライナ構成部材の略円筒状の端部に設けためねじとを螺合することにより行われるものである。   The method of manufacturing a gas container according to the present invention is a method of manufacturing a gas container having a resin liner formed by joining a plurality of liner constituent members having at least a substantially cylindrical end, and is one liner to be joined to each other. An engagement step of engaging the substantially cylindrical end of the component member with the substantially cylindrical end of the other liner component member, and after the engagement step, laser irradiation is performed and the ends are laser-bonded. An irradiation step for joining by welding, and the engagement step is provided at a substantially cylindrical end portion of one liner constituent member and a substantially cylindrical end portion of the other liner constituent member. Therefore, it is performed by screwing with a screw.

この構成によれば、ライナ構成部材の端部同士を螺合した状態でレーザを照射するため、加圧治具などを用いずとも端部同士の位置ずれを好適に抑制しながら、レーザ溶着により端部同士を良好に接合することができる。また、レーザ溶着後においても、端部同士が螺合されている分、接合部の強度を向上し得る。   According to this configuration, since the laser is irradiated in a state in which the ends of the liner constituent members are screwed together, the position shift between the ends is suitably suppressed without using a pressurizing jig or the like. The ends can be joined well. Further, even after laser welding, the strength of the joint can be improved by the amount that the ends are screwed together.

また上記本発明のガス容器の製造方法においては、上記の二部材の接合方法と同様に、以下のようにすることが好ましい。   Moreover, in the manufacturing method of the gas container of the said invention, it is preferable to carry out as follows similarly to the joining method of said 2 member.

係合工程は、おねじが設けられた端部の接合面とめねじが設けられた端部の接合面とが接触するまで、おねじとめねじとを螺合することで行われ、照射工程は、この接触状態の接合面同士をレーザ溶着により接合することで行われる。さらに好ましくは、この照射工程は、接合面同士を周方向に亘ってレーザ溶着により接合することで行われる。また好ましくは、照射工程は、螺合状態のおねじ及びめねじを接合面同士と共にレーザ溶着により接合することで行われる。   The engagement step is performed by screwing the male screw and the female screw until the joint surface of the end portion provided with the male screw comes into contact with the joint surface of the end portion provided with the female screw, and the irradiation step is performed. This is done by joining the contact surfaces in contact with each other by laser welding. More preferably, this irradiation step is performed by joining the joining surfaces in the circumferential direction by laser welding. Preferably, the irradiation step is performed by joining a screwed male screw and a female screw together with the joining surfaces by laser welding.

また好ましくは、係合工程に先立ち、互いに接合されるべき一方のライナ構成部材の略円筒状の端部をレーザ透過性の樹脂で形成し、且つ他方のライナ構成部材の略円筒状の端部をレーザ吸収性の樹脂で形成する工程を更に備え、照射工程は、レーザ透過性の端部側からレーザ吸収性の端部に向けてレーザを照射して、接合面同士をレーザ溶着により接合することで行われる。さらに好ましくは、おねじはテーパおねじからなり、めねじはテーパめねじからなる。   Preferably, prior to the engaging step, the substantially cylindrical end of one liner constituent member to be joined to each other is formed of a laser-transmitting resin, and the substantially cylindrical end of the other liner constituent member Is formed with a laser-absorbing resin, and the irradiation step irradiates the laser from the laser-transmitting end portion side toward the laser-absorbing end portion, and joins the bonding surfaces together by laser welding. Is done. More preferably, the male screw is a tapered male screw, and the female screw is a tapered female screw.

また好ましくは、係合工程に先立ち、互いに接合されるべき一方のライナ構成部材にインサート成形することにより金属材料からなるおねじを設け、且つ他方のライナ構成部材にインサート成形することにより金属材料からなるめねじを設ける工程を、更に備える。   Preferably, prior to the engaging step, a male screw made of a metal material is provided by insert molding on one liner constituent member to be joined to each other, and an insert molding is performed on the other liner constituent member from the metal material. The method further includes the step of providing a female screw.

この構成によれば、上記同様におねじ及びめねじが金属材料からなるために強固な締結力を得ることができることに加え、インサート成形しているため、各樹脂部材の端部におねじまたはめねじを簡単に設けることができる。   According to this configuration, since the screw and the female screw are made of a metal material in the same manner as described above, in addition to being able to obtain a strong fastening force, insert molding is performed. A female screw can be easily provided.

本発明の二部材の接合構造およびその接合方法によれば、一方の樹脂部材の端部と他方の樹脂部材の端部との位置ずれを簡易に抑制した状態で、その端部同士をレーザ溶着により適切に接合することができる。   According to the two-member joining structure and the joining method of the present invention, the end portions of one resin member and the end portions of the other resin member are easily laser-welded with each other in a state in which misalignment is easily suppressed. Therefore, it can join appropriately.

本発明のガス容器およびガス容器の製造方法によれば、同様に樹脂ライナの一のライナ構成部材と他のライナ構成部材とをレーザ溶着で接合する際に、その端部同士の位置ずれを抑制することができるため、端部同士を適切に接合することができる。   According to the gas container and the gas container manufacturing method of the present invention, similarly, when one liner constituent member and another liner constituent member of the resin liner are joined by laser welding, positional deviation between the end portions is suppressed. Since it can do, edge parts can be joined appropriately.

以下、添付図面を参照して、本発明の好適な実施形態について説明する。本実施形態の特徴部分は、略円筒状の端部を有する二つの樹脂部材を接合する際に、端部同士を係合してレーザ溶着するようにした点にある。以下では、第１および第２実施形態で、樹脂製パイプ材の接合構造およびその接合方法について説明する。また、第３および第４実施形態で、この接合構造を樹脂ライナに適用したガス容器について、その製造方法とともに説明する。   Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. The characteristic part of this embodiment is that, when two resin members having substantially cylindrical end portions are joined, the end portions are engaged with each other and laser-welded. Hereinafter, in the first and second embodiments, a joining structure of a resin pipe material and a joining method thereof will be described. In the third and fourth embodiments, a gas container in which this joining structure is applied to a resin liner will be described together with a manufacturing method thereof.

＜第１実施形態＞
図１および図２に示すように、レーザ吸収性の樹脂からなるパイプ材１と、レーザ透過性の樹脂からなるパイプ材２とが接合されて、一つのパイプ状の樹脂成形品が形成される。これらの両パイプ材１，２は、全体として円筒状に且つ同じ外径で形成され、互いの軸方向を合致させて接合される。 <First Embodiment>
As shown in FIGS. 1 and 2, a pipe material 1 made of a laser-absorbing resin and a pipe material 2 made of a laser-transmitting resin are joined to form a single pipe-shaped resin molded product. . Both the pipe materials 1 and 2 are formed in a cylindrical shape with the same outer diameter as a whole, and are joined with their axial directions matched.

レーザ吸収性のパイプ材１は、その軸方向に所定の長さ延在する胴部１１と、胴部１１の開口した一端側に形成された略円筒状の接合端部１２と、を有している。接合端部１２の外周面は、先端側に形成されていて胴部１１の外径よりも小径のおねじ２１と、おねじ２１の基端側から胴部１１にかけて所定の角度傾斜した接合面２２と、接合面２２と胴部１１の外周面との間に形成された段差面２３と、を有している。   The laser-absorbing pipe material 1 has a trunk portion 11 extending a predetermined length in the axial direction thereof, and a substantially cylindrical joining end portion 12 formed on one end side of the trunk portion 11 that is opened. ing. The outer peripheral surface of the joining end portion 12 is formed on the distal end side, and has a male screw 21 having a smaller diameter than the outer diameter of the trunk portion 11 and a joining surface inclined at a predetermined angle from the proximal end side of the male screw 21 to the trunk portion 11. 22 and a step surface 23 formed between the joint surface 22 and the outer peripheral surface of the body portion 11.

おねじ２１、接合面２２および段差面２３は、接合端部１２の周方向に亘って形成されている。おねじ２１は、例えば射出成形などの各種成形法を用いてパイプ材１を成形する際に、パイプ材１の全体形状と共に形成される。おねじ２１は、軸方向に所定の長さ延在する平行おねじからなる。もっとも、おねじ２１をテーパおねじで形成することで、パイプ材１，２同士を接合した際のねじ部における耐密性を高めることができる。   The male screw 21, the joining surface 22, and the step surface 23 are formed over the circumferential direction of the joining end portion 12. The male screw 21 is formed together with the overall shape of the pipe material 1 when the pipe material 1 is molded using various molding methods such as injection molding. The external thread 21 is a parallel external thread extending a predetermined length in the axial direction. However, by forming the male screw 21 with a tapered male screw, it is possible to improve the tightness resistance at the threaded portion when the pipe members 1, 2 are joined together.

接合面２２は、おねじ２１の基端に一体に連なっており、テーパ状に形成されている。段差面２３は、軸方向に直交する方向に対しやや胴部１１側に傾いた傾斜面からなる。もっとも、段差面２３は、軸方向に直交する方向な面であってもよいし、軸方向に直交する方向に対しやや接合面２２側に傾いた傾斜面であってもよい。   The joint surface 22 is integrally connected to the base end of the male screw 21 and is formed in a tapered shape. The step surface 23 is composed of an inclined surface slightly inclined toward the body part 11 with respect to a direction orthogonal to the axial direction. However, the step surface 23 may be a surface perpendicular to the axial direction, or may be an inclined surface slightly inclined toward the bonding surface 22 with respect to the direction orthogonal to the axial direction.

レーザ透過性のパイプ材２は、その軸方向に所定の長さ延在する胴部３１と、胴部３１の開口した一端側に形成され、レーザ吸収性の接合端部１２に接合される略円筒状の接合端部３２と、を有している。接合端部３２の外周面は、胴部３１の外周面と面一に連なっており、面取りされた先端面４０を有している。先端面４０は、上記の段差面２３に整合し且つこれに受け入れられるように、断差面２３に周方向に亘って当接可能に構成されている。   The laser-transmitting pipe material 2 is formed on a barrel portion 31 that extends in a predetermined length in the axial direction thereof, and on one end side of the barrel portion 31 that is open, and is joined to the laser-absorbing joint end portion 12. And a cylindrical joining end portion 32. The outer peripheral surface of the joining end portion 32 is continuous with the outer peripheral surface of the body portion 31 and has a chamfered tip surface 40. The tip surface 40 is configured to be able to contact the stepped surface 23 in the circumferential direction so as to align with and be received by the stepped surface 23 described above.

接合端部３２の内周面は、胴部３１側に形成されていて胴部３１の内径よりも大径のめねじ４１と、めねじ４１の先端側から先端面４０にかけて所定の角度傾斜した接合面４２と、を有している。   The inner peripheral surface of the joining end portion 32 is formed on the barrel portion 31 side and is inclined by a predetermined angle from the female screw 41 having a diameter larger than the inner diameter of the barrel portion 31 and the distal end side of the female screw 41 to the distal end surface 40. And a joining surface 42.

めねじ４１は、例えば射出成形などの各種成形法を用いてパイプ材２を成形する際に、パイプ材２の全体形状と共に形成される。めねじ４１は、平行おねじからなるおねじ２１に対応して、軸方向に所定の長さ延在する平行めねじからなる。このおねじ２１及びめねじ４１の螺合構造（係合構造）により、接合端部１２，３２同士が係合する。なお、おねじ２１をテーパおねじで形成した場合には、めねじ４１もテーパめねじで形成される。   The female thread 41 is formed together with the overall shape of the pipe material 2 when the pipe material 2 is molded using various molding methods such as injection molding. The female screw 41 is formed of a parallel female screw extending in a predetermined length in the axial direction corresponding to the male screw 21 formed of a parallel male screw. Due to the screwed structure (engagement structure) of the male screw 21 and the female screw 41, the joining end portions 12 and 32 are engaged with each other. In addition, when the external thread 21 is formed with a tapered external thread, the internal thread 41 is also formed with a tapered internal thread.

接合面４２は、めねじ４１の先端に一体に連なっており、逆テーパ状に形成されている。接合面４２は、接合面２２に整合し且つこれに径方向の外側から周方向に亘って当接可能に構成されている。なお、接合面２２，４２同士が隙間無く接触するように、各接合面２２，４２の表面を平滑化しておくことが好ましい。また、各接合面２２，４２の角度は、任意であるが、後述するレーザ照射装置としてのレーザトーチ５０からのレーザを透過または受光可能な角度であればよい。   The joining surface 42 is integrally connected to the tip of the female screw 41 and is formed in a reverse taper shape. The joining surface 42 is configured to be aligned with the joining surface 22 and to be able to abut on the joining surface 22 from the outside in the radial direction in the circumferential direction. In addition, it is preferable that the surfaces of the bonding surfaces 22 and 42 are smoothed so that the bonding surfaces 22 and 42 are in contact with each other without a gap. The angles of the bonding surfaces 22 and 42 are arbitrary, but may be any angles that can transmit or receive a laser from a laser torch 50 as a laser irradiation apparatus described later.

ここで、レーザ透過性およびレーザ吸収性の樹脂について説明する。パイプ材２を構成するレーザ透過性の樹脂は、熱可塑性を有している。このレーザ透過性の熱可塑性樹脂は、レーザ溶着に必要なエネルギーをレーザ吸収性側の接合面２２に到達させる程度に、レーザに対する透過性を有していればよい。したがって、レーザ透過性の熱可塑性樹脂であっても、レーザ吸収性の特性を僅かに有していてもよい。   Here, the laser-transmitting and laser-absorbing resins will be described. The laser-transmitting resin constituting the pipe material 2 has thermoplasticity. This laser-transmitting thermoplastic resin only needs to have a laser-transmitting property to such an extent that energy necessary for laser welding reaches the bonding surface 22 on the laser-absorbing side. Therefore, even a laser-transmitting thermoplastic resin may have a slight laser-absorbing characteristic.

レーザ透過性の熱可塑性樹脂としては、例えばポリエチレン、ポリプロピレン、ナイロン６６などを挙げることができるが、これらにガラス繊維などの補強繊維や着色剤を添加したものであってもよい。例えば、レーザ透過性のパイプ材２は、白色、半透明または透明に形成される。   Examples of the laser-transmitting thermoplastic resin include polyethylene, polypropylene, nylon 66, and the like, and those obtained by adding a reinforcing fiber such as glass fiber or a colorant to these may be used. For example, the laser transmissive pipe material 2 is formed in white, translucent or transparent.

同様に、パイプ材１を構成するレーザ吸収性の樹脂は、熱可塑性を有している。レーザ吸収性の熱可塑性樹脂は、レーザに対する吸収性を有していればよく、吸収したレーザにより発熱して溶融するものであればよい。   Similarly, the laser-absorbing resin constituting the pipe material 1 has thermoplasticity. The laser-absorbing thermoplastic resin only needs to have an absorptivity with respect to the laser and may be any one that generates heat and melts with the absorbed laser.

レーザ吸収性の熱可塑性樹脂としては、例えばポリエチレン、ポリプロピレン、ナイロン６６などを挙げることができるが、これらにガラス繊維などの補強繊維や着色剤を添加したものであってもよい。例えば、レーザ吸収性の熱可塑性樹脂は、レーザ透過性の熱可塑性樹脂と同一の樹脂で形成した場合には、レーザ透過性の熱可塑性樹脂よりもカーボンを多く添加することで形成される。したがって、レーザ吸収性のパイプ材１は、例えば黒色に形成される。   Examples of the laser-absorbing thermoplastic resin include polyethylene, polypropylene, nylon 66, and the like, and those obtained by adding a reinforcing fiber such as glass fiber or a colorant to these may be used. For example, when the laser-absorbing thermoplastic resin is formed of the same resin as the laser-transmitting thermoplastic resin, it is formed by adding more carbon than the laser-transmitting thermoplastic resin. Therefore, the laser-absorbing pipe material 1 is formed in black, for example.

なお、パイプ材２の全体をレーザ透過性、およびパイプ材１の全体をレーザ吸収性の樹脂とするのでなく、レーザ溶着の対象となる部位にこの種のレーザ透過性やレーザ吸収性の特性を持たせてもよい。例えば、一対のパイプ材１，２を両方ともレーザ透過性の樹脂で形成しておき、そのうちの一方のパイプ材の接合端部（あるいは接合面）に、レーザ吸収性を有する吸収剤を塗布したり、この種の吸収剤を練入したシートを貼付したりしてもよい。   It should be noted that the entire pipe material 2 is made of a laser-transmitting resin and the entire pipe material 1 is made of a laser-absorbing resin. You may have it. For example, a pair of pipe materials 1 and 2 are both formed of a laser-transmitting resin, and a laser-absorbing absorbent is applied to the joining end (or joining surface) of one of the pipe materials. Or a sheet containing this type of absorbent may be attached.

ここで、図３をも参照して、二つのパイプ材１，２の接合方法について説明する。先ず、パイプ材１の接合端部１２をパイプ材２の接合端部３２の内部に挿入して、おねじ２１の一部をめねじ４１の一部に螺合させる。さらに深く挿入するべく、二つのパイプ材１，２の少なくとも一方を回転させ、接合面２２と接合面４２とが接触するまで、おねじ２１とめねじ４１とを螺合させながら接合端部１２を接合端部３２にねじ込んでいく。   Here, a method for joining the two pipe members 1 and 2 will be described with reference to FIG. First, the joining end portion 12 of the pipe material 1 is inserted into the joining end portion 32 of the pipe material 2, and a part of the male screw 21 is screwed into a part of the female screw 41. In order to insert deeper, at least one of the two pipe members 1 and 2 is rotated, and the joint end 12 is screwed with the male screw 21 and the female screw 41 until the joint surface 22 and the joint surface 42 come into contact with each other. Screw into the joint end 32.

接合面２２，４２同士が周方向に亘って当接した状態になると、おねじ２１とめねじ４１とが軸方向に所定の長さ螺合した状態になると共に、段差面２３と先端面４０とが周方向に亘って当接した状態になる。これにより、一対のパイプ材１，２同士が仮接合（暫定接合）した状態となる。なお、この状態では、接合端部１２の外周面と接合端部３２の外周面との境界は、隙間無く略面一になる。また、螺合させていく際の接合面２２と接合面４２との接触は、おねじ２１およびめねじ４１の長さを調整しておくことで、あるいは段差面２３と先端面４０とが接触することで確認され得る。   When the joining surfaces 22 and 42 are in contact with each other in the circumferential direction, the male screw 21 and the female screw 41 are screwed in a predetermined length in the axial direction, and the step surface 23 and the tip surface 40 are Are in contact with each other in the circumferential direction. Thereby, a pair of pipe materials 1 and 2 will be in the state joined temporarily (temporary joining). In this state, the boundary between the outer peripheral surface of the joint end portion 12 and the outer peripheral surface of the joint end portion 32 is substantially flush with no gap. Further, the contact between the joint surface 22 and the joint surface 42 when screwing is performed by adjusting the lengths of the male screw 21 and the female screw 41, or the step surface 23 and the tip surface 40 are in contact with each other. This can be confirmed.

次いで、この仮接合状態の一対のパイプ材１，２同士をレーザ溶着により接合する。レーザ溶着は、一対のパイプ材１，２の外側に配置したレーザトーチ５０を駆動し、レーザトーチ５０から出射されるレーザを、レーザ透過性の接合端部３２側からレーザ吸収性の接合端部１２に向けて照射することで行われる。照射されたレーザは、接合端部３２の先端側を透過してレーザ吸収性の接合面２２に達し、この接合面２２の樹脂を加熱溶融する。また、接合面２２からの熱伝達によりレーザ透過性の接合面４２の樹脂が加熱溶融される。これらの溶融された樹脂が冷却固化することで、接合面２２，４２同士を互いに一体的に接合するレーザ溶着部６０が形成される。   Next, the pair of pipe members 1 and 2 in the temporarily joined state are joined by laser welding. In laser welding, a laser torch 50 disposed outside the pair of pipe members 1 and 2 is driven, and laser emitted from the laser torch 50 is transferred from the laser-transmitting bonding end 32 side to the laser-absorbing bonding end 12. It is done by irradiating towards. The irradiated laser passes through the tip end side of the joining end portion 32 and reaches the laser-absorbing joining surface 22, and heats and melts the resin on the joining surface 22. In addition, the resin of the laser-transmitting bonding surface 42 is heated and melted by heat transfer from the bonding surface 22. The melted resin is cooled and solidified, so that a laser welding portion 60 for joining the joining surfaces 22 and 42 together is formed.

レーザトーチ５０を駆動している際には、図示省略した回転装置により、仮接合状態の一対のパイプ材１，２をその軸回りに回転させる。こうすることで、接合面２２が周方向に順次加熱溶融されていくと共に、この熱伝達により接合面４２が周方向に順次加熱溶融されていく。したがって、仮接合状態の一対のパイプ材１，２を少なくとも一回転させると、接合面２２，４２同士をその周方向に亘って一体的に接合したレーザ溶着部６０が形成される。レーザ溶着の完了により、一対のパイプ材１，２は、仮接合状態から本接合状態（すなわち、完全に接合された状態。）となる。   When the laser torch 50 is being driven, the pair of pipe members 1 and 2 in a temporarily joined state are rotated around their axes by a rotating device (not shown). By doing so, the joining surface 22 is sequentially heated and melted in the circumferential direction, and the joining surface 42 is sequentially heated and melted in the circumferential direction by this heat transfer. Therefore, when the pair of pipe members 1 and 2 in the temporarily bonded state is rotated at least once, the laser welding portion 60 is formed in which the bonding surfaces 22 and 42 are integrally bonded over the circumferential direction. When the laser welding is completed, the pair of pipe materials 1 and 2 is changed from the temporarily joined state to the fully joined state (that is, a completely joined state).

なお、回転装置は、例えば、ねじを締め付けるように一対のパイプ材１，２を回転させれば、接合面２２，４２同士の密着性をより一層高めることが可能となる。また、一対のパイプ材１，２は、レーザトーチ５０に対して相対的に回転する構成であればよい。したがって、一対のパイプ材１，２を直接的に回転させるのではなく、レーザトーチ５０を一対のパイプ材１，２の周囲で直接的に回転させるようにしてもよい。またこれに代えて、一対のパイプ材１，２およびレーザトーチ５０をともに、互いに同方向にまたは逆方向に回転させるようにしてもよい。   Note that, for example, if the rotating device rotates the pair of pipe members 1 and 2 so as to tighten the screws, the adhesion between the joint surfaces 22 and 42 can be further enhanced. The pair of pipe members 1 and 2 may be configured to rotate relative to the laser torch 50. Therefore, the laser torch 50 may be directly rotated around the pair of pipe members 1 and 2 instead of directly rotating the pair of pipe members 1 and 2. Alternatively, the pair of pipe members 1 and 2 and the laser torch 50 may be rotated in the same direction or in the opposite direction.

なおまた、レーザトーチ５０が出射するレーザは、半導体レーザなどを用いることができるが、これに限定されるものではなく、レーザの種類は、レーザ透過性の接合端部３２の樹脂の肉厚を含む性状などを考慮して適宜選択される。また、レーザの出力（照射量）や一対のパイプ材１，２等の回転速度などの諸条件は、各パイプ材１，２の性状に応じて適宜設定すればよい。   The laser emitted from the laser torch 50 may be a semiconductor laser or the like, but is not limited to this, and the type of laser includes the thickness of the resin at the laser-transmitting joining end portion 32. It is appropriately selected in consideration of properties and the like. Various conditions such as the laser output (irradiation amount) and the rotation speed of the pair of pipe members 1 and 2 may be set as appropriate according to the properties of the pipe members 1 and 2.

以上のように、本実施形態によれば、一対のパイプ材１，２をレーザ溶着により接合する際に、おねじ２１及びめねじ４１の螺合構造によって、接合面２２，４２同士を密着するように保持させておくことができる。これにより、接合面２２，４２同士の位置ずれを好適に抑制しながら、レーザを照射することができる。
したがって、加圧治具などを用いずとも、接合面２２，４２同士をレーザ溶着により良好に接合することができる。また、レーザ溶着後の一対のパイプ材１，２の接合部分は、レーザ溶着部６０のみならず、螺合構造によるねじ締結によっても接合されているため、この接合部分の接合強度および耐密性を向上することができる。 As described above, according to the present embodiment, when the pair of pipe materials 1 and 2 are joined by laser welding, the joining surfaces 22 and 42 are brought into close contact with each other by the screwed structure of the male screw 21 and the female screw 41. Can be held as such. Thereby, it is possible to irradiate the laser while suitably suppressing the positional deviation between the bonding surfaces 22 and 42.
Therefore, the joining surfaces 22 and 42 can be favorably joined by laser welding without using a pressurizing jig or the like. Moreover, since the joint part of a pair of pipe materials 1 and 2 after laser welding is joined not only by the laser weld part 60 but also by screw fastening with a screwing structure, the joint strength and tightness resistance of this joint part. Can be improved.

なお、本実施形態の二部材の接合構造は、様々な変形例を適用することができる。例えば、螺合状態のおねじ２１及びめねじ４１に対してもレーザを照射して、おねじ２１及びめねじ４１の螺合部分もレーザ溶着により接合するようにしてもよい。また、接合面２２をテーパ状とし、接合面４２を逆テーパ状としたが、もちろんこれらが軸方向に直交する平坦面で構成してもよいし、段差を有する面で構成してもよい。   Various modifications can be applied to the two-member joint structure of the present embodiment. For example, the threaded male screw 21 and the female screw 41 may be irradiated with laser so that the screwed portions of the male screw 21 and the female screw 41 are also joined by laser welding. In addition, although the joining surface 22 is tapered and the joining surface 42 is inversely tapered, these may of course be formed of a flat surface orthogonal to the axial direction or a surface having a step.

さらに、樹脂部材としてパイプ材（１，２）を例に説明したが、自動車部品や配管部品などの各種の樹脂成形品に適用することができる。例えば、インテークマニホールドを複数の樹脂部材で構成する場合にも、上記のように螺合構造を設けて、樹脂部材同士を螺合した状態でレーザを照射して接合すればよい。   Furthermore, although the pipe material (1, 2) has been described as an example of the resin member, it can be applied to various resin molded products such as automobile parts and piping parts. For example, even when the intake manifold is composed of a plurality of resin members, the screw structure may be provided as described above, and the resin members may be joined by being irradiated with a laser while being screwed together.

＜第２実施形態＞
次に、図４を参照して、第２実施形態に係る二部材の接合構造およびその接合方法について相違点を中心に説明する。第１実施形態との相違点は、おねじ２１及びめねじ４１を金属材料で形成した点である。なお、第１実施形態と共通する部分については、同一の符号を付してその詳細な説明を省略する。 Second Embodiment
Next, with reference to FIG. 4, the two-member joint structure and the joint method according to the second embodiment will be described focusing on the differences. The difference from the first embodiment is that the male screw 21 and the female screw 41 are formed of a metal material. In addition, about the part which is common in 1st Embodiment, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

おねじ２１を外周面に有する金属スリーブ７０は、接合端部１２の先端側に形成された小径円筒部７２の外周に設けられている。金属スリーブ７０は、パイプ材１にインサート成形することにより形成されている。なお、小径円筒部７２の外周に嵌合させることで設けることもできるし、この嵌合状態で接着してもよい   The metal sleeve 70 having the external thread 21 on the outer peripheral surface is provided on the outer periphery of a small-diameter cylindrical portion 72 formed on the distal end side of the joining end portion 12. The metal sleeve 70 is formed by insert-molding the pipe material 1. In addition, it can also provide by making it fit to the outer periphery of the small diameter cylindrical part 72, and you may adhere | attach in this fitting state.

めねじ４１を内周面に有する金属スリーブ８０は、接合端部３２の奥部に形成された円筒部８２の内周に設けられている。金属スリーブ８０は、同様に、パイプ材２にインサート成形することにより形成されているが、もちろん円筒部８２に嵌合させてもよいし、この状態で接着させてもよい。これらの金属スリーブ７０，８０の金属の種類としては、例えばスチールが挙げられるが、これに限定されるものではない。また、上記実施形態と同様に、おねじ２１をテーパおねじで形成し、めねじ４１をテーパめねじで形成してもよい。   The metal sleeve 80 having the female screw 41 on the inner peripheral surface is provided on the inner periphery of the cylindrical portion 82 formed in the inner portion of the joining end portion 32. Similarly, the metal sleeve 80 is formed by insert molding on the pipe material 2, but of course, the metal sleeve 80 may be fitted to the cylindrical portion 82 or may be bonded in this state. Examples of the metal types of the metal sleeves 70 and 80 include steel, but are not limited thereto. Further, similarly to the above embodiment, the male screw 21 may be formed of a tapered male screw, and the female screw 41 may be formed of a tapered female screw.

本実施形態によれば、おねじ２１及びめねじ４１が金属により形成されているため、これらを樹脂で形成する場合に比べて、強固な締結力を得ることができる。これにより、接合面２２，４２同士の位置ずれをより一層好適に抑制することができ、接合面２２，４２同士をレーザ溶着により良好に接合することができる。なお、本実施形態においても、第１実施形態で説明したような各種の変形例を適用することができる。   According to this embodiment, since the external thread 21 and the internal thread 41 are made of metal, a stronger fastening force can be obtained compared to the case where they are made of resin. Thereby, the position shift of joining surfaces 22 and 42 can be controlled still more suitably, and joining surfaces 22 and 42 can be joined favorably by laser welding. Also in this embodiment, various modifications as described in the first embodiment can be applied.

なお、金属スリーブ７０に代えて、パイプ材１の樹脂よりも硬質の樹脂を用いて、おねじ２１を外周面に有する樹脂スリーブを構成してもよい。同様に、金属スリーブ８０に代えて、パイプ材２の樹脂よりも硬質の樹脂を用いて、めねじ４１を内周面に有する樹脂スリーブを構成してもよい。   Instead of the metal sleeve 70, a resin sleeve having the male screw 21 on the outer peripheral surface may be configured using a resin harder than the resin of the pipe material 1. Similarly, instead of the metal sleeve 80, a resin sleeve having the internal thread 41 on the inner peripheral surface may be configured using a resin harder than the resin of the pipe material 2.

＜第３実施形態＞
次に、図５および図６を参照して、第３実施形態に係るガス容器およびその接合方法について説明する。本実施形態は、第１実施形態の二部材の接合構造をガス容器の樹脂ライナに適用して、樹脂ライナを構成するライナ構成部材の端部同士を接合したものである。以下では、先ずガス容器の構造について説明し、その後、ガス容器の製造方法について簡単に説明する。 <Third Embodiment>
Next, with reference to FIG. 5 and FIG. 6, the gas container and its joining method according to the third embodiment will be described. In this embodiment, the two-member joining structure of the first embodiment is applied to a resin liner of a gas container, and the end portions of the liner constituting members constituting the resin liner are joined together. Below, the structure of a gas container is demonstrated first, and the manufacturing method of a gas container is demonstrated easily after that.

図５に示すように、ガス容器１０１は、全体として密閉円筒状の容器本体１０２と、容器本体１０２の長手方向の両端部に取り付けられた口金１０３，１０３と、を具備している。容器本体１０２の内部は、各種のガスを貯留する貯留空間１０５となっている。ガス容器１０１は、常圧のガスを充填することもできるし、常圧に比して圧力が高められたガスを充填することもできる。すなわち、本発明のガス容器１０１は、高圧ガス容器として機能することができる。   As shown in FIG. 5, the gas container 101 includes a sealed cylindrical container body 102 as a whole, and caps 103, 103 attached to both ends of the container body 102 in the longitudinal direction. The inside of the container main body 102 serves as a storage space 105 for storing various gases. The gas container 101 can be filled with a normal pressure gas, or can be filled with a gas whose pressure is increased as compared with the normal pressure. That is, the gas container 101 of the present invention can function as a high-pressure gas container.

例えば、燃料電池システムでは、高圧の状態で用意された燃料ガスを減圧して、燃料電池の発電に供している。本発明のガス容器１０１は、高圧の燃料ガスを貯留するのに適用することができ、燃料ガスとしての水素や、圧縮天然ガス（ＣＮＧガス）などを貯留することができる。ガス容器１０１に充填される水素の圧力としては、例えば３５ＭＰａあるいは７０ＭＰａであり、ＣＮＧガスの圧力としては、例えば２０ＭＰａである。以下は、高圧水素ガス容器１０１を例に説明する。   For example, in a fuel cell system, the fuel gas prepared in a high pressure state is decompressed and used for power generation of the fuel cell. The gas container 101 of the present invention can be applied to store high-pressure fuel gas, and can store hydrogen as a fuel gas, compressed natural gas (CNG gas), and the like. The pressure of hydrogen filled in the gas container 101 is, for example, 35 MPa or 70 MPa, and the pressure of the CNG gas is, for example, 20 MPa. Hereinafter, the high-pressure hydrogen gas container 101 will be described as an example.

容器本体１０２は、ガスバリア性を有する内側の樹脂ライナ１１１（内殻）と、樹脂ライナ１１１の外周に配置された補強層１１２（外殻）と、の二層構造を有している。補強層１１２は、例えば炭素繊維とエポキシ樹脂を含むＦＲＰからなり、樹脂ライナ１１１の外表面を被覆するようにこれを巻きつけている。   The container body 102 has a two-layer structure of an inner resin liner 111 (inner shell) having gas barrier properties and a reinforcing layer 112 (outer shell) disposed on the outer periphery of the resin liner 111. The reinforcing layer 112 is made of, for example, FRP containing carbon fiber and an epoxy resin, and is wound around so as to cover the outer surface of the resin liner 111.

口金１０３は、例えばステンレスなどの金属で形成され、容器本体１０２の半球面状をした端壁部の中心に設けられている。口金１０３の開口部の内周面には、めねじが刻設されており、配管やバルブアッセンブリ１１４（バルブボデー）などの機能部品が、このめねじを介して口金１０３にねじ込み接続可能となっている。なお、図５では、口金１０３，１０３の一方にのみバルブアッセンブリ１１４を設けた例を二点鎖線で示した。   The base 103 is formed of a metal such as stainless steel, for example, and is provided at the center of the hemispherical end wall portion of the container body 102. A female screw is engraved on the inner peripheral surface of the opening of the base 103, and functional parts such as piping and valve assembly 114 (valve body) can be screwed into the base 103 via this female screw. ing. In FIG. 5, an example in which the valve assembly 114 is provided only on one of the caps 103 is shown by a two-dot chain line.

例えば、燃料電池システムにおけるガス容器１０１は、バルブや継手等の配管要素を一体的に組み込んだバルブアッセンブリ１１４を介して、貯留空間１０５と図示省略した外部のガス流路との間が接続され、貯留空間１０５に水素が充填されると共に貯留空間１０５から水素が放出される。なお、ガス容器１０１の両端部に口金１０３，１０３を設けたが、もちろん片方の端部にのみ口金１０３を設けてもよい。   For example, the gas container 101 in the fuel cell system is connected between the storage space 105 and an external gas flow path (not shown) via a valve assembly 114 in which piping elements such as valves and joints are integrated. The storage space 105 is filled with hydrogen and hydrogen is released from the storage space 105. In addition, although the nozzle | cap | dies 103 and 103 were provided in the both ends of the gas container 101, of course, you may provide the nozzle | cap | die 103 only in one edge part.

樹脂ライナ１１１は、長手方向の中央で二分割された一対の略同形状からなるライナ構成部材１２１，１２２（割体）を、レーザ溶着により接合して構成されている。すなわち、半割り中空体のライナ構成部材１２１，１２２同士をレーザ溶着により接合することで、中空内部の樹脂ライナ１１１が構成されている。   The resin liner 111 is formed by joining a pair of liner constituent members 121 and 122 (split bodies) having substantially the same shape divided into two at the center in the longitudinal direction by laser welding. That is, the resin liner 111 inside the hollow is constituted by joining the liner constituting members 121 and 122 of the half hollow body by laser welding.

一対のライナ構成部材１２１，１２２のうち、ライナ構成部材１２１は、第１実施形態のパイプ材２と同様に例えばレーザ透過性の熱可塑性樹脂で形成され、ライナ構成部材１２２は、第１実施形態のパイプ材１と同様にレーザ吸収性の熱可塑性樹脂で形成されている。一対のライナ構成部材１２１，１２２は、樹脂ライナ１１１の軸方向に所定の長さ延在する胴部１３１，１４１をそれぞれ有している。各胴部１３１，１４１の軸方向の両端側は、開口している。   Of the pair of liner constituent members 121 and 122, the liner constituent member 121 is formed of, for example, a laser-transmitting thermoplastic resin, like the pipe member 2 of the first embodiment, and the liner constituent member 122 is the first embodiment. Similarly to the pipe material 1, it is formed of a laser-absorbing thermoplastic resin. The pair of liner constituent members 121 and 122 have body portions 131 and 141 extending in a predetermined length in the axial direction of the resin liner 111, respectively. Both end sides in the axial direction of the body portions 131 and 141 are open.

一方のライナ構成部材１２１は、胴部１３１の一端側の縮径された端部に形成された返し部１３２と、返し部１３２の中央部に開口した連通部１３３と、胴部１３１の他端側の略円筒状の接合端部１３４と、を有している。返し部１３２は、ライナ構成部材１２１の強度を確保するのに機能する。返し部１３２の外周面と補強層１１２の端部との間に口金１０３が位置しており、口金１０３は、連通部１３３に嵌合している。   One liner constituting member 121 includes a return portion 132 formed at a reduced diameter end portion on one end side of the body portion 131, a communication portion 133 opened at a central portion of the return portion 132, and the other end of the body portion 131. And a substantially cylindrical joining end portion 134 on the side. The return portion 132 functions to ensure the strength of the liner constituent member 121. The base 103 is located between the outer peripheral surface of the return part 132 and the end of the reinforcing layer 112, and the base 103 is fitted in the communication part 133.

接合端部１３４は、第１実施形態のパイプ材２の接合端部３２と同様に形成されている。すなわち、図６に示すように、接合端部１３４は、外周面に面取りされた先端面１５１を有し且つ内周面にめねじ１５２及び接合面１５３を有している。   The joining end portion 134 is formed in the same manner as the joining end portion 32 of the pipe material 2 of the first embodiment. That is, as shown in FIG. 6, the joint end portion 134 has a tip surface 151 chamfered on the outer peripheral surface, and has a female screw 152 and a joint surface 153 on the inner peripheral surface.

これらの先端面１５１、めねじ１５２及び接合面１５３は、第１実施形態の先端面４０、めねじ４１及び接合面４２と同様に構成されている。また、これらの先端面１５１、めねじ１５２及び接合面１５３は、第１実施形態と同様の変形例（例えばテーパめねじなど）を適用することができる。ここでは、その詳細な説明を省略する。   The tip surface 151, the female screw 152, and the joint surface 153 are configured in the same manner as the tip surface 40, the female screw 41, and the joint surface 42 of the first embodiment. Further, the tip surface 151, the female screw 152, and the joint surface 153 can be applied with the same modified example (for example, a tapered female screw) as in the first embodiment. Here, detailed description thereof is omitted.

他方のライナ構成部材１２２は、胴部１４１の一端側の縮径された端部に形成された返し部１４２と、返し部１４２の中央部に開口した連通部１４３と、胴部１４１の他端側の略円筒状の接合端部１４４と、を有している。   The other liner constituting member 122 includes a return portion 142 formed at a reduced diameter end portion on one end side of the body portion 141, a communication portion 143 opened at the center portion of the return portion 142, and the other end of the body portion 141. And a substantially cylindrical joining end portion 144 on the side.

返し部１４２は、ライナ構成部材１２２の強度を確保するのに機能し、連通部１４３に口金１０３が嵌合している。なお、口金１０３が樹脂ライナ１１１の片方の端部にのみ設けられる場合には、一対のライナ構成部材１２１，１２２の一方については、胴部１３１，１４１の一方の一端側が閉塞端で形成される。   The return portion 142 functions to ensure the strength of the liner constituting member 122, and the base 103 is fitted to the communication portion 143. When the base 103 is provided only at one end of the resin liner 111, one end of the body 131 or 141 is formed as a closed end with respect to one of the pair of liner constituting members 121 and 122. .

接合端部１４４は、第１実施形態のパイプ材１の接合端部１２と同様に形成されている。すなわち、図６に示すように、接合端部１４４の外周面は、めねじ１５２に螺合するおねじ１６１と、接合面１５３に整合して且つこれに周方向に亘って当接する接合面１６２と、先端面１５１を受け入れ可能な段差面１６３と、を有している。   The joining end portion 144 is formed in the same manner as the joining end portion 12 of the pipe material 1 of the first embodiment. That is, as shown in FIG. 6, the outer peripheral surface of the joint end portion 144 includes an external thread 161 that is screwed into the female screw 152, and a joint surface 162 that is aligned with the joint surface 153 and abuts on the circumferential surface. And a stepped surface 163 that can receive the front end surface 151.

これらのおねじ１６１、接合面１６２及び段差面１６３は、第１実施形態のおねじ２１、接合面２２及び段差面２３と同様に構成されると共に、同様の変形例（例えばテーパおねじなど）を適用され得る。   The male screw 161, the joint surface 162, and the step surface 163 are configured in the same manner as the male screw 21, the joint surface 22, and the step surface 23 of the first embodiment, and the same modification (for example, a tapered male screw). Can be applied.

したがって、ガス容器１０１のライナ構成部材１２１，１２２同士が接合された状態では、おねじ１６１及びめねじ１５２の螺合構造により接合端部１３４，１４４同士が係合されている。またこの状態では、接合面１５３，１６２同士を一体的に接合するレーザ溶着部１８０が、接合面１５３と接合面１６２との界面に形成されている。   Therefore, in a state where the liner constituting members 121 and 122 of the gas container 101 are joined together, the joining end portions 134 and 144 are engaged with each other by the screwed structure of the male screw 161 and the female screw 152. In this state, a laser welded portion 180 that integrally bonds the bonding surfaces 153 and 162 is formed at the interface between the bonding surface 153 and the bonding surface 162.

なお、ライナ構成部材１２１の全体をレーザ透過性、およびライナ構成部材１２２の全体をレーザ吸収性の樹脂とするのでなく、レーザ溶着の対象となる部位にこの種のレーザ透過性やレーザ吸収性の特性を持たせてもよい。   The entire liner constituting member 121 is not laser-permeable and the entire liner constituting member 122 is a laser-absorbing resin, but this kind of laser-transmitting or laser-absorbing property is applied to a portion to be laser welded. You may give a characteristic.

ここで、本明細書にいうライナ構成部材１２１，１２２とは、分割構造の樹脂ライナ１１１を構成する部材であって、上述のように、略円筒状の端部を有するものをいう。したがって、ライナ構成部材１２１，１２２は、少なくとも一端側が略円筒状の形状を有しいればよく、その形状には、全体の形状が円筒状、環状、お碗状、ドーム状等であることが含まれる。   Here, the liner constituting members 121 and 122 referred to in the present specification are members constituting the resin liner 111 having a split structure, and have a substantially cylindrical end portion as described above. Accordingly, it is sufficient that the liner constituting members 121 and 122 have a substantially cylindrical shape at least on one end side, and the overall shape may be a cylindrical shape, an annular shape, a bowl shape, a dome shape, or the like. included.

図３および図４を参照して、ガス容器１の製造方法について簡単に説明する。
先ず、一対のライナ構成部材１２１，１２２および二つの口金１０３，１０３を成形する。このとき例えば、予め成形した一の口金１０３を金型内に配置し、この金型内にレーザ透過性の熱可塑性樹脂を射出して、ライナ構成部材１２１および口金１０３を一体成形する（インサート成形する。）。 With reference to FIG. 3 and FIG. 4, the manufacturing method of the gas container 1 is demonstrated easily.
First, the pair of liner constituting members 121 and 122 and the two caps 103 and 103 are formed. At this time, for example, one pre-molded base 103 is placed in the mold, and a laser-transmitting thermoplastic resin is injected into the mold to integrally form the liner constituting member 121 and the base 103 (insert molding). To do.)

また同様の手順により、レーザ吸収性の熱可塑性樹脂を射出して、ライナ構成部材１２２および口金１０３を一体成形する。このように、射出成形を用いることで各ライナ構成部材１２１，１２２を成形精度良く成形することができる。なお、射出成形に代えて、回転成形やブロー成形を用いてもよい。   Further, by the same procedure, a laser-absorbing thermoplastic resin is injected, and the liner constituting member 122 and the base 103 are integrally formed. Thus, each liner constituent member 121, 122 can be molded with good molding accuracy by using injection molding. Instead of injection molding, rotational molding or blow molding may be used.

次に、口金１０３付きの各ライナ構成部材１２１，１２２を製造設備内に例えば横向き姿勢で配置して、ライナ構成部材１２１，１２２同士を対向させて、おねじ１６１の一部をめねじ１５２の一部に螺合させる。   Next, the liner constituent members 121 and 122 with the base 103 are disposed in the production facility in a horizontal orientation, for example, so that the liner constituent members 121 and 122 are opposed to each other, and a part of the external thread 161 is fixed to the female screw 152. Screw into a part.

そして、二つのライナ構成部材１２１，１２２の少なくとも一方を回転させ、接合面１５３と接合面１６２とが接触するまで、おねじ１６１とめねじ１５２とを螺合させながら、接合端部１４４を接合端部１３４にねじ込んでいく。ねじ込みの完了により、接合面１５３，１６２同士を周方向に亘って当接させると共に、段差面１６３と先端面１５１とを周方向に亘って当接させて、ライナ構成部材１２１，１２２同士を仮接合（暫定接合）した状態の樹脂ライナ１１１とする。   Then, at least one of the two liner constituting members 121 and 122 is rotated, and the joint end 144 is joined to the joint end while the male screw 161 and the female screw 152 are screwed together until the joint surface 153 and the joint surface 162 come into contact with each other. Screw into part 134. When the screwing is completed, the joint surfaces 153 and 162 are brought into contact with each other in the circumferential direction, and the step surface 163 and the tip surface 151 are brought into contact with each other in the circumferential direction, so that the liner constituting members 121 and 122 are temporarily brought into contact with each other. The resin liner 111 is in a joined state (temporary joining).

なお、この後で、各ライナ構成部材１２１，１２２の各口金１０３，１０３に図示省略した栓をねじ込み接続することなどにより、仮接合状態の樹脂ライナ１１１の内部を略密閉状態として、この密閉空間に不純物が入り込まないようにしてもよい。   After that, the inside of the resin liner 111 in the temporarily bonded state is made substantially sealed by, for example, screwing and connecting a stopper (not shown) to the caps 103, 103 of the liner constituting members 121, 122. Impurities may be prevented from entering.

次いで、第１実施形態と同様に、レーザ溶着工程が実行される。すなわち、仮接合状態の樹脂ライナ１１１の外側にあるレーザトーチ１７０を駆動しつつ、これに同期して樹脂ライナ１１１を図示省略した回転装置により軸回りに回転させる。レーザがレーザ透過性の接合端部１３４側からレーザ吸収性の接合端部１４４に向けて照射され、接合面１６２の樹脂および接合面１５３の樹脂が周方向に順次加熱溶融される。   Next, similarly to the first embodiment, a laser welding process is performed. That is, while driving the laser torch 170 outside the temporarily bonded resin liner 111, the resin liner 111 is rotated around its axis by a rotating device (not shown) in synchronization with this. The laser is irradiated from the laser-transmitting bonding end portion 134 toward the laser-absorbing bonding end portion 144, and the resin on the bonding surface 162 and the resin on the bonding surface 153 are sequentially heated and melted in the circumferential direction.

なお、回転装置は、例えば、ねじを締め付けるように樹脂ライナ１１１を回転させれば、接合面１５３，１６２同士の密着性をより一層高めることが可能となる。また、レーザの照射時に、樹脂ライナ１１１がレーザトーチ１７０に対して相対的に回転する構成であればよい。さらに、レーザトーチ１７０が出射するレーザは、半導体レーザなどを用いることができるが、これに限定されるものではない。   Note that, for example, if the resin liner 111 is rotated so that the screw is tightened, the rotating device can further improve the adhesion between the joint surfaces 153 and 162. Further, the resin liner 111 may be configured to rotate relative to the laser torch 170 at the time of laser irradiation. Furthermore, a laser emitted from the laser torch 170 can be a semiconductor laser or the like, but is not limited thereto.

樹脂ライナ１１１の少なくとも一回転により、接合面１５３，１６２同士を互いに一体的に接合するレーザ溶着部１８０が周方向に亘って形成される。これにより、樹脂ライナ１１１は、仮接合状態から本接合状態（すなわち、完全に接合された状態）となる。レーザ溶着完了後に、フィラメントワインディング法等により樹脂ライナ１１１の外表面に補強層１１２を形成することで、ガス容器１０１が製造される。   By at least one rotation of the resin liner 111, a laser welding portion 180 that integrally bonds the bonding surfaces 153 and 162 to each other is formed in the circumferential direction. As a result, the resin liner 111 is changed from the temporarily bonded state to the fully bonded state (that is, the state where it is completely bonded). After the laser welding is completed, the gas container 101 is manufactured by forming the reinforcing layer 112 on the outer surface of the resin liner 111 by a filament winding method or the like.

以上のように、本実施形態によれば、ガス容器１０１の製造過程において、樹脂ライナ１１１のライナ構成部材１２１，１２２同士をレーザ溶着により接合する際に、おねじ１６１とめねじ１５２との螺合構造によって、接合面１５３，１６２同士を密着するように保持させておくことができる。   As described above, according to the present embodiment, when the liner constituent members 121 and 122 of the resin liner 111 are joined to each other by laser welding in the manufacturing process of the gas container 101, the male screw 161 and the female screw 152 are screwed together. Depending on the structure, the joint surfaces 153 and 162 can be held in close contact with each other.

したがって、接合面１５３，１６２同士の位置ずれを好適に抑制することができ、加圧治具などを用いずとも、接合面１５３，１６２同士をレーザ溶着により良好に接合することができる。また、レーザ溶着後の樹脂ライナ１１１は、レーザ溶着部１８０のみならず、螺合構造によるねじ締結によっても接合されているため、この接合部分の接合強度および耐密性を向上し得る。   Therefore, the positional deviation between the bonding surfaces 153 and 162 can be suitably suppressed, and the bonding surfaces 153 and 162 can be favorably bonded to each other by laser welding without using a pressure jig or the like. Moreover, since the resin liner 111 after laser welding is joined not only by the laser welding part 180 but also by screw fastening with a screwing structure, the joining strength and tightness resistance of this joining part can be improved.

なお、本実施形態においても、第１実施形態で説明したような様々な変形例を適用することができる。例えば、螺合状態のおねじ１６１及びめねじ１５２に対してもレーザを照射して、おねじ１６１及びめねじ１５２の螺合部分もレーザ溶着により接合するようにしてもよい。   Also in this embodiment, various modifications as described in the first embodiment can be applied. For example, the male screw 161 and the female screw 152 may be irradiated with laser, and the screwed portions of the male screw 161 and the female screw 152 may be joined by laser welding.

また、本実施形態においても、おねじ１６１及びめねじ１５２を金属材料とする第２実施形態の構成を適用することができる。この場合には、例えば、ライナ構成部材１２１（および口金１０３）を成形する際に、めねじ１５２を有する金属スリーブ（８０）をライナ構成部材１２１にインサート成形するようにすればよい。同様に、ライナ構成部材１２２（および口金１０３）を成形する際に、おねじ１６１を有する金属スリーブ（７０）をライナ構成部材１２２にインサート成形するようにすればよい。   Also in this embodiment, the configuration of the second embodiment in which the male screw 161 and the female screw 152 are metal materials can be applied. In this case, for example, when the liner constituting member 121 (and the base 103) is formed, a metal sleeve (80) having a female screw 152 may be insert-molded into the liner constituting member 121. Similarly, when the liner constituting member 122 (and the base 103) is formed, the metal sleeve (70) having the male screw 161 may be insert-molded into the liner constituting member 122.

＜第４実施形態＞
次に、図７を参照して、第４実施形態に係るガス容器およびその接合方法について相違点を中心に説明する。第３実施形態との相違点は、ガス容器１０１の樹脂ライナ１１１を三つのライナ構成部材２０１，２０２，２０３より構成したことである。なお、図７では、補強層１１２については省略している。 <Fourth embodiment>
Next, with reference to FIG. 7, the gas container and its joining method according to the fourth embodiment will be described focusing on the differences. The difference from the third embodiment is that the resin liner 111 of the gas container 101 is composed of three liner constituent members 201, 202, and 203. In FIG. 7, the reinforcing layer 112 is omitted.

樹脂ライナ１１１は、長手方向において三分割された三つのライナ構成部材２０１，２０２，２０３を、レーザ溶着により接合して構成されている。両端に位置する二つのライナ構成部材２０１，２０２は、全体の形状がお碗状に形成されている。中央に位置するライナ構成部材２０３は、全体の形状が円筒状または環状に形成されている。両端の二つのライナ構成部材２０１，２０２は、それぞれ、例えば射出成形により口金３と一体成形される。中央のライナ構成部材２０３は、例えば射出成形により形成される。   The resin liner 111 is configured by joining three liner constituent members 201, 202, and 203 divided in three in the longitudinal direction by laser welding. The two liner constituting members 201 and 202 located at both ends are formed in a bowl shape as a whole. The liner constituting member 203 located at the center is formed in a cylindrical or annular shape as a whole. The two liner constituting members 201 and 202 at both ends are integrally formed with the base 3 by, for example, injection molding. The central liner constituting member 203 is formed by, for example, injection molding.

両端の二つのライナ構成部材２０１，２０２の各々は、返し部２１１，２２１および連通部２１２，２２２のほか、各口金１０３，１０３と反対側に接合端部２１３，２２３を有している。接合端部２１３および接合端部２２３は、上記同様のめねじ１５２を有する接合端部（１３４）で構成され、レーザ透過性の特性を有している。   Each of the two liner constituent members 201 and 202 at both ends has joint end portions 213 and 223 on the side opposite to the caps 103 and 103 in addition to the return portions 211 and 221 and the communication portions 212 and 222. The joining end portion 213 and the joining end portion 223 are configured by a joining end portion (134) having the same internal thread 152 as described above, and have laser transmission characteristics.

中央のライナ構成部材２０３は、軸方向の開口した両端側にそれぞれ接合端部２３１，２３２を有している。接合端部２３１および接合端部２３２は、上記同様のおねじ１６１を有する接合端部（１４４）で構成され、レーザ吸収性の特性を有している。なおもちろん、接合端部２１３，２２３をレーザ吸収性で螺合構造のオス側とし、接合端部２３１，２３２をレーザ透過性で螺合構造のメス側としてもよい。樹脂ライナ１１１は、接合端部２１３，２３１同士が螺合状態でレーザ溶着により互いに接合され、且つ接合端部２２３，２３２同士が螺合状態でレーザ溶着により互いに接合されている。   The central liner constituting member 203 has joint end portions 231 and 232 on both end sides opened in the axial direction. The joining end portion 231 and the joining end portion 232 are configured by a joining end portion (144) having the same male screw 161 as described above, and have laser absorption characteristics. Of course, the joining end portions 213 and 223 may be a laser-absorbing and screwed male side, and the joining end portions 231 and 232 may be a laser-transmitting and screwing female side. The resin liner 111 is joined to each other by laser welding with the joining end portions 213 and 231 screwed together, and the joining end portions 223 and 232 are joined to each other by laser welding in a screwed state.

本実施形態のガス容器１０１の製造方法は、上記した各実施形態の製造方法を適用することができる。ここでは、三つのライナ構成部材２０１，２０２，２０３を同時にレーザ溶着で接合する場合について簡単に説明する。   The manufacturing method of each embodiment mentioned above can be applied to the manufacturing method of the gas container 101 of this embodiment. Here, the case where the three liner constituent members 201, 202, 203 are simultaneously joined by laser welding will be briefly described.

先ず、口金１０３付きのライナ構成部材（２０１，２０２）を含む三つのライナ構成部材２０１，２０２，２０３を成形する。次いで、接合端部２１３と接合端部２３１とを螺合し、これらの接合面同士を接触させると共に、接合端部２２３と接合端部２３２とを螺合し、これらの接合面同士を接触させる。これにより、全てのライナ構成部材２０１，２０２，２０３が仮接合（暫定接合）した状態の樹脂ライナ１１１となる。   First, three liner constituent members 201, 202, 203 including a liner constituent member (201, 202) with a base 103 are formed. Next, the joint end portion 213 and the joint end portion 231 are screwed together to bring these joint surfaces into contact with each other, and the joint end portion 223 and the joint end portion 232 are screwed together to bring these joint surfaces into contact with each other. . As a result, the resin liner 111 is in a state in which all the liner constituting members 201, 202, 203 are temporarily joined (temporary joined).

そして、二つのレーザトーチ１７０の駆動に同期して、仮接合状態の樹脂ライナ１１１をその軸回りに相対回転させながら、接合端部２１３，２３１同士および接合端部２２３，２３２同士をレーザ溶着により周方向に亘って接合する。これにより、樹脂ライナ１１１が本接合された状態となり、最終的に補強層１１２を設けることでガス容器１０１が製造される。   Then, in synchronism with the drive of the two laser torches 170, the joint end portions 213 and 231 and the joint end portions 223 and 232 are surrounded by laser welding while relatively rotating the temporarily bonded resin liner 111 around its axis. Join over direction. As a result, the resin liner 111 is finally joined, and the gas container 101 is manufactured by finally providing the reinforcing layer 112.

したがって、本実施形態のように三つのライナ構成部材２０１，２０２，２０３で樹脂ライナ１１１を構成しても、上記実施形態と同様にガス容器１０１を製造することができる。   Therefore, even if the resin liner 111 is constituted by three liner constituting members 201, 202, and 203 as in the present embodiment, the gas container 101 can be manufactured in the same manner as in the above embodiment.

なお、三つのライナ構成部材２０１，２０２，２０３について、仮接合やレーザ溶着等の処理を同時に行った例を説明したが、もちろんこれらの処理を別個に行ってもよい。また、ライナ構成部材が三つの場合について説明したが、四つ以上も同様である。すなわち、本発明は、軸方向に並ぶ複数のライナ構成部材を接合した樹脂ライナ１１１に適用することができる。   In addition, although the example which performed the process of temporary joining, laser welding, etc. simultaneously about three liner structural members 201,202,203 was demonstrated, of course, you may perform these processes separately. Moreover, although the case where there were three liner structural members was demonstrated, four or more are the same. That is, the present invention can be applied to the resin liner 111 in which a plurality of liner constituent members arranged in the axial direction are joined.

なお、第３実施形態および第４実施形態のガス容器１０１は、レーザ溶着部１８０自体およびその近傍に、おねじ１６１及びめねじ１５２からなる螺合構造を有する構成であるが、この螺合構造以外の係合構造を用いてもよい。例えば第３実施形態の接合端部１３４，１４４同士を係合構造により密着させるように係合してもよい。この種の係合構造は、例えば、スナップフィットや圧入などで構成することができる。   The gas container 101 of the third embodiment and the fourth embodiment is configured to have a screwed structure including a male screw 161 and a female screw 152 in the laser welded portion 180 itself and in the vicinity thereof. Other engagement structures may be used. For example, you may engage so that the joining end parts 134 and 144 of 3rd Embodiment may be closely_contact | adhered by an engagement structure. This type of engagement structure can be configured by, for example, snap-fit or press-fitting.

また、上記した全ての実施形態において、レーザ溶着を実行する際に、様々な製造設備を用いて行うことができる。ガス容器１０１に適用した例について説明するに、例えば、仮接合状態の樹脂ライナ１１１をチャンバー内に配置して、チャンバー内を不活性ガス雰囲気下または真空状態にして、螺合状態の接合部１３４，１４４同士をレーザ溶着するようにしてもよい。こうすることで、大気よりも低酸素雰囲気下とすることができ、各接合部１３４，１４４の酸化が防止されるため、接合精度をより一層を高めることができる。   Moreover, in all above-mentioned embodiment, when performing laser welding, it can carry out using various manufacturing equipment. An example applied to the gas container 101 will be described. For example, the temporarily bonded resin liner 111 is disposed in the chamber, and the chamber is placed in an inert gas atmosphere or in a vacuum state, so that the screw-joined joint 134 is formed. 144 may be laser welded together. By doing so, the atmosphere can be under a lower oxygen atmosphere than the atmosphere, and the oxidation of the joints 134 and 144 can be prevented, so that the joining accuracy can be further enhanced.

また、レーザ溶着時に樹脂ライナ１１１の内外に圧力差を付与して、接合面同士（２２，４２または１５３，１６２）の密着性を高めるようにしてもよい。圧力差の付与は、例えばポンプにより、樹脂ライナ１１１の口金１０３を介して樹脂ライナ１１１の内部を減圧または加圧することで行うことができる。こうすることで、接合面１５３，１６２同士の密着力を高めた状態で、これをレーザ溶着により接合することができる。   Further, a pressure difference may be applied to the inside and outside of the resin liner 111 at the time of laser welding to enhance the adhesion between the joint surfaces (22, 42 or 153, 162). The application of the pressure difference can be performed, for example, by reducing or pressurizing the inside of the resin liner 111 through the base 103 of the resin liner 111 with a pump. By carrying out like this, it can join by the laser welding in the state which raised the contact | adhesion power of joining surface 153,162.

第１実施形態に係る二部材の接合構造について、接合前の状態を示す断面図である。It is sectional drawing which shows the state before joining about the joining structure of 2 members which concerns on 1st Embodiment. 第１実施形態に係る二部材の接合構造について、仮接合後の状態を示す断面図である。It is sectional drawing which shows the state after temporary joining about the joining structure of the 2 member which concerns on 1st Embodiment. 第１実施形態に係る二部材の接合構造について、レーザ溶着後の状態を示す断面図である。It is sectional drawing which shows the state after laser welding about the joining structure of 2 members which concerns on 1st Embodiment. 第２実施形態に係る二部材の接合構造について、接合前の状態を示す断面図である。It is sectional drawing which shows the state before joining about the joining structure of the 2 member which concerns on 2nd Embodiment. 第３実施形態に係るガス容器の構成を示す断面図である。It is sectional drawing which shows the structure of the gas container which concerns on 3rd Embodiment. 第３実施形態に係るガス容器の接合部分を拡大して示す断面図である。It is sectional drawing which expands and shows the junction part of the gas container which concerns on 3rd Embodiment. 第４実施形態に係るガス容器の構成を示す断面図である。It is sectional drawing which shows the structure of the gas container which concerns on 4th Embodiment.

符号の説明Explanation of symbols

１：パイプ材（樹脂部材）、２：パイプ材（樹脂部材）、１２：接合端部、２１：おねじ、３２：接合端部、４１：めねじ、６０：レーザ溶着部、７０：金属スリーブ、８０：金属スリーブ、１０１：ガス容器、１１１：樹脂ライナ、１１２：補強層、１２１：ライナ構成部材、１２２：ライナ構成部材、１３４：接合端部、１５２：めねじ、１４４：接合端部、１６１：おねじ、１８０：レーザ溶着部、２０１：ライナ構成部材、２０２：ライナ構成部材、２０３：ライナ構成部材、２１３：接合端部、２２３：接合端部、２３１：接合端部、２３２：接合端部   1: pipe material (resin member), 2: pipe material (resin member), 12: joint end, 21: male screw, 32: joint end, 41: female screw, 60: laser weld, 70: metal sleeve 80: metal sleeve, 101: gas container, 111: resin liner, 112: reinforcement layer, 121: liner component, 122: liner component, 134: joint end, 152: female screw, 144: joint end, 161: Male screw, 180: Laser welded part, 201: Liner constituent member, 202: Liner constituent member, 203: Liner constituent member, 213: Joining end part, 223: Joining end part, 231: Joining end part, 232: Joining edge

Claims (20)

少なくとも略円筒状の端部を有する一対の樹脂部材を、その端部同士を係合構造により係合してレーザ溶着により接合する二部材の接合構造であって、
前記係合構造は、
一方の樹脂部材の端部に設けられたおねじと、
他方の樹脂部材の端部に設けられ、前記おねじに螺合されるめねじと、を有する二部材の接合構造。 A pair of resin members having at least a substantially cylindrical end portion, and a two-member joining structure in which the end portions are engaged with each other by an engaging structure and joined by laser welding,
The engagement structure is
A male screw provided at an end of one resin member;
A two-member joining structure having an internal thread provided at an end of the other resin member and screwed into the external thread. 前記めねじが設けられた前記端部の内周面は、傾斜した接合面を有し、
前記おねじが設けられた前記端部の外周面は、前記接合面に整合し且つこれに当接する接合面を有し、
この接合面同士がレーザ溶着により接合されている請求項１に記載の二部材の接合構造。 The inner peripheral surface of the end provided with the female screw has an inclined joint surface,
The outer peripheral surface of the end provided with the male screw has a joint surface that is aligned with and abuts the joint surface,
The two-member joint structure according to claim 1, wherein the joint surfaces are joined by laser welding. 螺合状態の前記おねじ及び前記めねじは、前記接合面同士と共にレーザ溶着により接合されている請求項２に記載の二部材の接合構造。   The two-member joining structure according to claim 2, wherein the male screw and the female screw in a screwed state are joined together by laser welding together with the joint surfaces. 前記めねじが設けられた前記端部は、レーザ透過性の樹脂で形成され、
前記おねじが設けられた前記端部は、レーザ吸収性の樹脂で形成されている請求項２または３に記載の二部材の接合構造。 The end provided with the female screw is formed of a laser-transmitting resin,
The two-member joining structure according to claim 2 or 3, wherein the end portion provided with the male screw is formed of a laser-absorbing resin. 前記おねじ及び前記めねじは、金属材料で形成されている請求項１ないし４のいずれか一項に記載の二部材の接合構造。   The two-member joining structure according to any one of claims 1 to 4, wherein the male screw and the female screw are formed of a metal material. 前記おねじは、テーパおねじからなり、
前記めねじは、テーパめねじからなる請求項１ないし５のいずれか一項に記載の二部材の接合構造。 The male screw is a tapered male screw,
The two-member joining structure according to any one of claims 1 to 5, wherein the female screw is a tapered female screw. 少なくとも略円筒状の端部を有する一対の樹脂部材を、その端部同士を接合する二部材の接合方法であって、
その一方の樹脂部材の端部に設けたおねじと、その他方の樹脂部材の端部に設けためねじとを螺合した状態でレーザを照射して、この端部同士をレーザ溶着により接合する二部材の接合方法。 A two-member joining method for joining a pair of resin members having at least substantially cylindrical end portions, the end portions being joined to each other,
Laser irradiation is performed with the male screw provided at the end of one resin member and the screw provided at the end of the other resin member screwed together, and the ends are joined by laser welding. Two-member joining method. 前記おねじが設けられた端部の接合面と、前記めねじが設けられた端部の接合面とが接触するまで、前記おねじ及び前記めねじを螺合した後、この接合面同士をレーザ溶着により接合する請求項７に記載の二部材の接合方法。   After the male screw and the female screw are screwed together until the joint surface of the end portion provided with the male screw comes into contact with the joint surface of the end portion provided with the female screw, the joint surfaces are joined together. The joining method of the two members of Claim 7 joined by laser welding. 前記接合面同士を周方向に亘ってレーザ溶着により接合する請求項８に記載の二部材の接合方法。   The two-member joining method according to claim 8, wherein the joining surfaces are joined to each other by laser welding over the circumferential direction. 一方の樹脂部材の端部をレーザ透過性の樹脂で形成し、且つ他方の樹脂部材の端部をレーザ吸収性の樹脂で形成しておき、このレーザ透過性の端部側からレーザ吸収性の端部に向けてレーザを照射して、前記接合面同士をレーザ溶着により接合する請求項８または９に記載の二部材の接合方法。   The end of one resin member is formed of a laser-transmitting resin, and the end of the other resin member is formed of a laser-absorbing resin. The joining method of the two members of Claim 8 or 9 which irradiates a laser toward an edge part, and joins the said joint surfaces by laser welding. 前記一対の樹脂部材を一対のライナ構成部材として、請求項７ないし１０のいずれか一項に記載の二部材の接合方法を用い、ライナ構成部材同士を接合して構成した樹脂ライナと、
前記樹脂ライナの外周に配置された補強層と、を有するガス容器。 A resin liner constituted by joining the liner constituent members using the two-member joining method according to any one of claims 7 to 10 as the pair of resin members as a pair of liner constituent members,
And a reinforcing layer disposed on the outer periphery of the resin liner. 樹脂ライナを有するガス容器であって、
前記樹脂ライナは、少なくとも略円筒状の端部を有する複数のライナ構成部材を接合してなり、且つライナ構成部材同士の接合部分には、この略円筒状の端部同士を係合する係合構造と、この略円筒状の端部同士をレーザ溶着により接合したレーザ溶着部と、が設けられ、
前記係合構造は、
前記端部同士の一方に設けられたおねじと、
前記端部同士の他方に設けられ、前記おねじに螺合されるめねじと、を有するガス容器。 A gas container having a resin liner,
The resin liner is formed by joining a plurality of liner constituent members having at least a substantially cylindrical end portion, and the joint portion between the liner constituent members engages with the substantially cylindrical end portions. A structure and a laser welded portion in which the substantially cylindrical ends are joined by laser welding;
The engagement structure is
A male screw provided on one of the ends;
A gas container having a female screw provided on the other of the ends and screwed into the male screw. 前記めねじが設けられた前記端部の内周面は、傾斜した接合面を有し、
前記おねじが設けられた前記端部の外周面は、前記接合面に整合し且つこれに当接する接合面を有し、
前記レーザ溶着部は、この接合面同士が溶融して形成されている請求項１２に記載のガス容器。 The inner peripheral surface of the end provided with the female screw has an inclined joint surface,
The outer peripheral surface of the end provided with the male screw has a joint surface that is aligned with and abuts the joint surface,
The gas container according to claim 12, wherein the laser welding portion is formed by melting the joint surfaces. 前記めねじが設けられた前記端部は、レーザ透過性の樹脂で形成され、
前記おねじが設けられた前記端部は、レーザ吸収性の樹脂で形成されている請求項１２または１３に記載のガス容器。 The end provided with the female screw is formed of a laser-transmitting resin,
The gas container according to claim 12 or 13, wherein the end portion provided with the male screw is formed of a laser-absorbing resin. 前記おねじ及び前記めねじは、金属材料で形成されている請求項１２ないし１４のいずれか一項に記載のガス容器。   The gas container according to any one of claims 12 to 14, wherein the male screw and the female screw are formed of a metal material. 少なくとも略円筒状の端部を有するライナ構成部材を複数個接合してなる樹脂ライナを有するガス容器の製造方法であって、
互いに接合されるべき一方のライナ構成部材の略円筒状の端部と、他方のライナ構成部材の略円筒状の端部とを係合する係合工程と、
前記係合工程の後、レーザを照射してこの端部同士をレーザ溶着により接合する照射工程と、を有し、
前記係合工程は、前記一方のライナ構成部材の略円筒状の端部に設けたおねじと、前記他方のライナ構成部材の略円筒状の端部に設けためねじとを螺合することにより行われるガス容器の製造方法。 A method for producing a gas container having a resin liner formed by joining a plurality of liner constituent members having at least a substantially cylindrical end,
An engagement step of engaging the substantially cylindrical end of one liner component to be joined together and the substantially cylindrical end of the other liner component;
After the engagement step, there is an irradiation step of irradiating a laser and joining the ends by laser welding,
The engaging step is performed by screwing a male screw provided at a substantially cylindrical end portion of the one liner constituting member with a screw provided at a substantially cylindrical end portion of the other liner constituting member. The manufacturing method of the gas container performed. 前記係合工程は、前記おねじが設けられた端部の接合面と前記めねじが設けられた端部の接合面とが接触するまで、前記おねじと前記めねじとを螺合することで行われ、
前記照射工程は、接触状態の接合面同士をレーザ溶着により接合することで行われる請求項１６に記載のガス容器の製造方法。 In the engaging step, the male screw and the female screw are screwed together until the joint surface of the end portion provided with the male screw comes into contact with the joint surface of the end portion provided with the female screw. Done in
The said irradiation process is a manufacturing method of the gas container of Claim 16 performed by joining the joining surfaces of a contact state by laser welding. 前記照射工程は、前記接合面同士を周方向に亘ってレーザ溶着により接合することで行われる請求項１７に記載のガス容器の製造方法。   The said irradiation process is a manufacturing method of the gas container of Claim 17 performed by joining the said joint surfaces by the laser welding over the circumferential direction. 前記係合工程に先立ち、互いに接合されるべき前記一方のライナ構成部材の略円筒状の端部をレーザ透過性の樹脂で形成し、且つ前記他方のライナ構成部材の略円筒状の端部をレーザ吸収性の樹脂で形成する工程を更に備え、
前記照射工程は、前記レーザ透過性の端部側から前記レーザ吸収性の端部に向けてレーザを照射して、前記接合面同士をレーザ溶着により接合することで行われる請求項１７または１８に記載のガス容器の製造方法。 Prior to the engaging step, the substantially cylindrical end portions of the one liner constituent members to be joined to each other are formed of a laser transmitting resin, and the substantially cylindrical end portions of the other liner constituent members are formed. It further comprises a step of forming with a laser-absorbing resin,
The said irradiation process is performed by irradiating a laser toward the said laser-absorbing edge part from the said laser-permeable edge part side, and joining the said joining surfaces by laser welding. The manufacturing method of the gas container of description. 前記係合工程に先立ち、互いに接合されるべき前記一方のライナ構成部材にインサート成形することにより金属材料からなる前記おねじを設け、且つ前記他方のライナ構成部材にインサート成形することにより金属材料からなる前記めねじを設ける工程を、更に備えた請求項１６ないし１９のいずれか一項に記載のガス容器の製造方法。   Prior to the engaging step, the male screw made of a metal material is provided by insert molding to the one liner constituent member to be joined to each other, and from the metal material by insert molding to the other liner constituent member The method for producing a gas container according to any one of claims 16 to 19, further comprising a step of providing the female screw.
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