JP5206287B2 - Welding structure and welding method - Google Patents

Welding structure and welding method Download PDF

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Publication number
JP5206287B2
JP5206287B2 JP2008254906A JP2008254906A JP5206287B2 JP 5206287 B2 JP5206287 B2 JP 5206287B2 JP 2008254906 A JP2008254906 A JP 2008254906A JP 2008254906 A JP2008254906 A JP 2008254906A JP 5206287 B2 JP5206287 B2 JP 5206287B2
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inclined surface
welding
surface portion
portions
intake pipe
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JP2010084642A (en
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卓司 野村
雅也 井深
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Toyota Boshoku Corp
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Toyota Boshoku Corp
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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
    • B29C66/301—Three-dimensional joints, i.e. the joined area being substantially non-flat
    • 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
    • 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
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin 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
    • 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
    • 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
    • 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
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • 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
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • 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
    • B29C66/51—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
    • B29C66/547—Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles, e.g. endless tubes
    • B29C66/5472—Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles, e.g. endless tubes for making elbows or V-shaped pieces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1034—Manufacturing and assembling intake systems
    • F02M35/10354—Joining multiple sections together
    • F02M35/1036—Joining multiple sections together by welding, bonding or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F02M35/112—Intake manifolds for engines with cylinders all in one line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F02M35/116—Intake manifolds for engines with cylinders in V-arrangement or arranged oppositely relative to the main shaft
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • 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
    • B29L2031/7172—Fuel tanks, jerry cans
    • 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
    • B29L2031/748—Machines or parts thereof not otherwise provided for
    • B29L2031/749—Motors
    • B29L2031/7492—Intake manifold

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a welding structure which materialize stable high joining strength besides preventing a die structure for molding respective members from becoming complicated. <P>SOLUTION: An intake pipe side welding rib 22 in a manifold body 14 and a housing side welding rib 23 in a gas introduction chamber housing 17 are constituted of two vertical planes 30, 31 provided parallel to each other and having a difference in elevation and of inclined surface 32, 33 situated therebetween. The vertical planes 30, 31 and inclined surfaces 32, 33 are alternately connected to each other to form an annular shape. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

この発明は、合成樹脂製の２つの部材を振動溶着または超音波溶着して構成された溶着構造及び溶着方法に関するものである。 The present invention relates to a welding structure and a welding method constituted by vibration welding or ultrasonic welding of two members made of synthetic resin.

従来、この種の技術には、例えば特許文献１に記載されたインテークマニホールドがある。図１０に示すように、このインテークマニホールドの吸気管部８０は、合成樹脂製の第１分割体８１及び第２分割体８２を振動溶着することで形成される。両分割体８１，８２の分割面（溶着面）８１ａ，８２ａは、吸気管部の湾曲に対応した湾曲形状となっている。このため、振動溶着時に、第１分割体８１を矢印Ｚ方向に加圧して第２分割体８２に押し付けたときに、第１分割体８１に斜面に沿う分力に基づく滑りが生じ、第１分割体８１が湾曲方向の逆方向（図１０の上方）に拡がるように変形するとしている。この結果、両分割体８１，８２の分割面８１ａ，８２ａ間の接合強度が、位置によって不均一となり、吸気管部８０全体の接合強度が低くなる。   Conventionally, this type of technique includes an intake manifold described in Patent Document 1, for example. As shown in FIG. 10, the intake pipe portion 80 of the intake manifold is formed by vibration welding a first divided body 81 and a second divided body 82 made of synthetic resin. The split surfaces (welding surfaces) 81a and 82a of both split bodies 81 and 82 have a curved shape corresponding to the curvature of the intake pipe portion. For this reason, at the time of vibration welding, when the first divided body 81 is pressed in the direction of the arrow Z and pressed against the second divided body 82, the first divided body 81 slips based on the component force along the slope, and the first It is assumed that the divided body 81 is deformed so as to expand in a direction opposite to the bending direction (upward in FIG. 10). As a result, the joint strength between the split surfaces 81a and 82a of both split bodies 81 and 82 becomes uneven depending on the position, and the joint strength of the entire intake pipe portion 80 is lowered.

そこで、このインテークマニホールドにおいては、振動溶着時において両分割体８１，８２の分割面８１ａ，８２ａ同士のずれを防ぐ当接部８３及び受け部８４を、両分割体８１，８２の分割面８１ａ，８２ａのそれぞれ外側に設けている。そして、当接部８３と受け部８４との当接により前記斜面に沿う滑りを抑制し、接合強度の向上を図っている。
特開２００８−２５３５４号公報 Therefore, in this intake manifold, the abutment portion 83 and the receiving portion 84 that prevent the split surfaces 81a and 82a of the two split bodies 81 and 82 from being displaced at the time of vibration welding are divided into the split surfaces 81a and 82a of the split bodies 81 and 82, respectively. 82a is provided outside each. And the contact | abutting of the contact part 83 and the receiving part 84 suppresses the slip along the said slope, and aims at the improvement of joining strength.
JP 2008-25354 A

ところが、上記特許文献１に記載のインテークマニホールドは、両分割体８１，８２の分割面８１ａ，８２ａの外側に当接部８３と受け部８４を設ける構成であるので、各分割体８１，８２を成形するための型構造が複雑化する。しかも、当接部８３及び受け部８４の位置及び形状の精度をよほど正確にしないと、接合強度の向上において効果がなくなるばかりでなく逆効果になるおそれがある。例えば、当接部８３と受け部８４との間に隙間が生じていれば、前述した斜面の滑りを規制することができない。また、例えば、当接部８３が所定の位置よりも上方に位置して、第１分割体８１の分割面８１ａと第２分割体８２の分割面８２ａとが当接する前に当接部８３と受け部８４とが当接してしまえば、前記両分割面８１ａ，８２ａ同士が当接せず、従って、第１分割体８１と第２分割体８２とを溶着することができないおそれがある。   However, the intake manifold described in Patent Document 1 has a configuration in which the abutting portion 83 and the receiving portion 84 are provided outside the split surfaces 81a and 82a of the two split bodies 81 and 82. The mold structure for molding becomes complicated. In addition, unless the accuracy of the position and shape of the contact portion 83 and the receiving portion 84 is not made very accurate, there is a possibility that not only the effect of improving the bonding strength is lost but also an adverse effect. For example, if there is a gap between the contact portion 83 and the receiving portion 84, the above-described slippage of the slope cannot be regulated. Further, for example, the abutting portion 83 is positioned above a predetermined position, and the abutting portion 83 before the dividing surface 81a of the first divided body 81 and the dividing surface 82a of the second divided body 82 abut. If the receiving portion 84 comes into contact with each other, the two divided surfaces 81a and 82a do not come into contact with each other, and therefore there is a possibility that the first divided body 81 and the second divided body 82 cannot be welded.

この発明は、このような従来の技術に存在する問題点に着目してなされたものである。その目的とするところは、各部材を成形するための型構造の複雑化を招かず、しかも、安定した高い接合強度を得ることができる溶着構造及び溶着方法を提供することにある。 The present invention has been made paying attention to such problems existing in the prior art. An object of the present invention is to provide a welding structure and a welding method capable of obtaining a stable and high bonding strength without complicating the mold structure for molding each member.

上記の目的を達成するために、請求項１に記載の発明は、高低差を有するとともに互いに平行をなす２箇所の平面部と、それらの平面部間に位置する傾斜面部とを有する第１部材と、前記平面部及び傾斜面部と対応する平面部及び傾斜面部を有する第２部材とを備え、第１部材及び第２部材を、それらの前記平面部及び傾斜面部の各先端面に設けられる溶着面において溶着した溶着構造において、前記第１部材の傾斜面部の溶着面に突部を設けるとともに、前記第２部材の傾斜面部の溶着面に、前記突部と凹凸の関係で嵌合して傾斜面部間における傾斜方向の滑りを規制する凹部を設けたことを特徴とする。 In order to achieve the above-mentioned object, the invention according to claim 1 is a first member having two plane portions having a height difference and parallel to each other, and an inclined surface portion positioned between the plane portions. And a second member having a flat surface portion and an inclined surface portion corresponding to the flat surface portion and the inclined surface portion, and the first member and the second member are welded to each front end surface of the flat surface portion and the inclined surface portion. in welding the welded structure in the surface, provided with a collision portion on the welding surface of the inclined surface portion of the first member, the welding surface of the inclined surface of the second member, and fitting in relation to the projections and uneven slope A concave portion is provided that restricts the slip in the inclined direction between the surface portions.

請求項２に記載の発明は、前記第１、第２部材の両平面部及び傾斜面部は、交互に位置し、全体として環状をなしていることを特徴とする。
請求項３に記載の発明は、前記第１部材は、インテークマニホールドの相互に一体化された複数の吸気管であり、前記第２部材は、前記吸気管の管壁の外側に溶着され、同管壁
の外側にブローバイガスの導入室を区画形成するハウジングであり、前記吸気管の管壁には前記導入室内のブローバイガスを吸気管内に導入するための導入口を形成したことを特徴とする。
請求項４に記載の発明は、高低差を有するとともに互いに平行をなす２箇所の平面部と、それらの平面部間に位置する傾斜面部とを有する第１部材と、前記平面部及び傾斜面部と対応する平面部及び傾斜面部を有する第２部材とを、それらの前記平面部及び傾斜面部の各先端面に設けられる溶着面において溶着する溶着方法であって、前記第１部材の傾斜面部の溶着面に突部を設けるとともに、前記第２部材の傾斜面部の溶着面に、前記突部と凹凸の関係で嵌合して傾斜面部間における傾斜方向の滑りを規制する凹部を設け、前記突部と前記凹部とを嵌合させて、傾斜面部間における滑りを規制した状態で振動溶着又は超音波溶着を行うことを特徴とする。 The invention according to claim 2 is characterized in that both the flat surface portions and the inclined surface portions of the first and second members are alternately positioned and have an annular shape as a whole.
According to a third aspect of the present invention, the first member is a plurality of intake pipes integrated with each other of the intake manifold, and the second member is welded to the outside of the pipe wall of the intake pipe. A housing for defining a blow-by gas introduction chamber outside the pipe wall, wherein an inlet for introducing the blow-by gas in the introduction chamber into the intake pipe is formed in the pipe wall of the intake pipe .
According to a fourth aspect of the present invention, there is provided a first member having two planar portions having a height difference and parallel to each other, and an inclined surface portion positioned between the planar portions, and the planar portion and the inclined surface portion. A welding method in which a second member having a corresponding flat surface portion and an inclined surface portion is welded to a welding surface provided on each of the tip surfaces of the flat surface portion and the inclined surface portion, and the inclined surface portion of the first member is welded. provided with a butt portion on a surface, said in welding surface of the inclined surface portion of the second member, a recess for restricting the sliding of the inclined direction between the projection and the fitting to the inclined surface portion in relation to irregularities, said projection And the concave portion are fitted, and vibration welding or ultrasonic welding is performed in a state where slippage between the inclined surface portions is regulated.

（作用）
この発明においては、第１部材と第２部材との溶着部の外側に、振動溶着時に互いに当接する部分を設ける必要がないため、各部材を成形するための型構造の複雑化を避けることができる。また、突部と凹部との嵌合により傾斜面部のすべりを防止でき、第１及び第２部材同士の接合強度が向上する。 (Function)
In this invention, since it is not necessary to provide a portion that contacts each other during vibration welding outside the welded portion between the first member and the second member, it is possible to avoid complication of the mold structure for molding each member. it can. In addition, slipping of the inclined surface portion can be prevented by fitting the protrusion and the recess, and the bonding strength between the first and second members is improved.

この発明によれば、溶着構造において型構造の複雑化を招かず、しかも、安定した高い接合強度を得ることができるという効果を発揮する。   According to the present invention, there is an effect that the mold structure is not complicated in the welded structure, and a stable high bonding strength can be obtained.

次に、この発明を具体化した一実施形態について、図１〜図９を用いて説明する。
図１及び図２に示すように、インテークマニホールド１０は、図示しないスロットル弁を介して上流側のエアクリーナに接続されるサージタンク１１と、このサージタンク１１に接続された複数の吸気管１２と、各吸気管１２を内燃機関Ｅｇのシリンダブロックに接続するためのフランジ部１３とを備えている。複数の吸気管１２は、サージタンク１１側において一体になって一体部１２ａが形成されている。このインテークマニホールド１０は、合成樹脂製の４つの成形部材、すなわち、第１部材としてのマニホールド本体１４、タンクカバー１５、吸気管ハウジング１６、及び、第２部材としてのガス導入室ハウジング１７を一体化して構成されている。 Next, an embodiment embodying the present invention will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the intake manifold 10 includes a surge tank 11 connected to an upstream air cleaner via a throttle valve (not shown), a plurality of intake pipes 12 connected to the surge tank 11, A flange portion 13 for connecting each intake pipe 12 to a cylinder block of the internal combustion engine Eg is provided. The plurality of intake pipes 12 are integrated on the surge tank 11 side to form an integral part 12a. This intake manifold 10 integrates four molded members made of synthetic resin, that is, a manifold body 14 as a first member, a tank cover 15, an intake pipe housing 16, and a gas introduction chamber housing 17 as a second member. Configured.

図３に示すように、各吸気管１２は、吸気流の方向を９０°以上の角度で変える第１湾曲部１８と、この第１湾曲部１８の下流において同一方向へ湾曲する第２湾曲部１９とを備えている。各吸気管１２の第１湾曲部１８の内コーナ側における外側には、内燃機関Ｅｇのクランクケースからのブローバイガスを各吸気管１２内に導入するためのガス導入部２０が設けられている。   As shown in FIG. 3, each intake pipe 12 includes a first bending portion 18 that changes the direction of the intake flow at an angle of 90 ° or more, and a second bending portion that curves in the same direction downstream of the first bending portion 18. 19. A gas introduction part 20 for introducing blow-by gas from the crankcase of the internal combustion engine Eg into each intake pipe 12 is provided outside the first curved part 18 of each intake pipe 12 on the inner corner side.

このガス導入部２０は、以下のように構成されている。すなわち、図４及び図８に示すように、マニホールド本体１４において吸気管１２の一体部１２ａの外側には平坦部１２ｂが形成され、その周囲には環状の座部２１が突出形成されている。座部２１の先端面には、吸気管側溶着リブ２２が形成されている。   The gas introduction unit 20 is configured as follows. That is, as shown in FIGS. 4 and 8, a flat portion 12 b is formed outside the integral portion 12 a of the intake pipe 12 in the manifold body 14, and an annular seat portion 21 is formed around the periphery thereof. An intake pipe side welding rib 22 is formed on the front end surface of the seat portion 21.

一方、図６及び図９に示すように、前記ガス導入室ハウジング１７の周縁には、前記吸気管側溶着リブ２２に対応するハウジング側溶着リブ２３が形成されている。そして、図５に示すように、ガス導入部２０は、吸気管側溶着リブ２２とハウジング側溶着リブ２３とが振動溶着されて、マニホールド本体１４にガス導入室ハウジング１７が一体化されることにより形成されている。平坦部１２ｂとガス導入室ハウジング１７との間、すなわちガス導入部２０の内部には、各吸気管１２に対応するガス導入室２４が形成され、このガス導入室２４には、ガス導入室ハウジング１７の一端に形成された接続管（図６に図示）２５に接続されるブローバイガス配管を通じてブローバイガスが導入される。図４及び図５に示すように、ガス導入室２４は、吸気管１２毎に平坦部１２ｂに形成されたガス導入口２６を通じて各吸気管１２内に連通され、ブローバイガスがガス導入室２４からガス導入口２６を介して吸気管１２内に導入される。   On the other hand, as shown in FIGS. 6 and 9, a housing side welding rib 23 corresponding to the intake pipe side welding rib 22 is formed on the periphery of the gas introduction chamber housing 17. Then, as shown in FIG. 5, the gas introduction part 20 is configured such that the intake pipe side welding rib 22 and the housing side welding rib 23 are vibration welded, and the gas introduction chamber housing 17 is integrated with the manifold body 14. Is formed. A gas introduction chamber 24 corresponding to each intake pipe 12 is formed between the flat portion 12b and the gas introduction chamber housing 17, that is, inside the gas introduction portion 20, and the gas introduction chamber 24 includes a gas introduction chamber housing. Blow-by gas is introduced through a blow-by gas pipe connected to a connection pipe (shown in FIG. 6) 25 formed at one end of the pipe 17. As shown in FIGS. 4 and 5, the gas introduction chamber 24 is communicated with each intake pipe 12 through a gas introduction port 26 formed in the flat portion 12 b for each intake pipe 12, and blow-by gas is supplied from the gas introduction chamber 24. The gas is introduced into the intake pipe 12 through the gas inlet 26.

図６、図８及び図９に示すように、前記吸気管側溶着リブ２２及びハウジング側溶着リブ２３は、それぞれ上下２つの垂直平面部３０及び垂直平面部３１と、両垂直平面部３０，３１の両端部間を連絡するそれぞれ２つの傾斜面部３２及び傾斜面部３３とにより構成されている。２つの垂直平面部３０，３１の先端面は、互いに平行をなすとともに高低差を有する溶着面３０ａ及び溶着面３１ａになっており、２つの傾斜面部３２，３３の先端面は、両垂直平面部３０，３１の両端部間を連絡するように延びる溶着面３２ａ及び溶着面３３ａになっている。そして、両垂直平面部３０，３１及び両傾斜面部３２，３３は、交互に位置し、全体として環状をなしている。また、傾斜面部３２上の下側には、位置ずれ規制用の突部３４が突出形成されるとともに、傾斜面部３３上には、その突部３４と凹凸の関係で嵌合する位置ずれ規制用の凹部３５が凹設されている。   As shown in FIGS. 6, 8, and 9, the intake pipe side welding rib 22 and the housing side welding rib 23 include two vertical plane parts 30 and 31, and two vertical plane parts 30 and 31. The two inclined surface portions 32 and the inclined surface portion 33 are connected to each other between the two end portions. The tip surfaces of the two vertical plane portions 30 and 31 are a weld surface 30a and a weld surface 31a that are parallel to each other and have a height difference, and the tip surfaces of the two inclined surface portions 32 and 33 are both vertical plane portions. A welding surface 32a and a welding surface 33a extend so as to communicate between both end portions of 30,31. The vertical plane portions 30 and 31 and the inclined surface portions 32 and 33 are alternately positioned, and form an annular shape as a whole. In addition, a protrusion 34 for restricting misregistration is formed on the lower side of the inclined surface portion 32, and for misalignment regulation that fits on the inclined surface portion 33 in an uneven relationship. The recess 35 is provided.

図５、図７及び図９に示すように、垂直平面部３１及び傾斜面部３３の両側には、一体部１２ａに接触又は近接する壁部３６が形成されている。この壁部３６と垂直平面部３０及び傾斜面部３２との間には、後述の垂直平面部３０及び傾斜面部３２と垂直平面部３１及び傾斜面部３３との溶着によって生じるバリを収容するための収容室３７が形成されている。なお、前記壁部３６は、一体部１２ａに接触したとしても、その接触部が振動溶着により溶着しない程度の接触圧である。また、壁部３６が一体部１２ａに近接するということは、前記の溶着によって生じたバリが収容室３７から外部に出てこない程度の間隙を持って近接している状態を示す。   As shown in FIGS. 5, 7, and 9, wall portions 36 that are in contact with or close to the integrated portion 12 a are formed on both sides of the vertical plane portion 31 and the inclined surface portion 33. Between the wall portion 36 and the vertical plane portion 30 and the inclined surface portion 32, an accommodation for accommodating burrs generated by welding of the vertical plane portion 30 and the inclined surface portion 32, the vertical plane portion 31 and the inclined surface portion 33, which will be described later. A chamber 37 is formed. In addition, even if the said wall part 36 contacts the integrated part 12a, it is a contact pressure of the grade which the contact part does not weld by vibration welding. Further, the fact that the wall portion 36 is close to the integrated portion 12a indicates a state where the burr generated by the welding is close to the integrated chamber 12 with a gap that does not come out of the storage chamber 37.

さて、上記のように構成されたこの実施形態は、マニホールド本体１４、タンクカバー１５、吸気管ハウジング１６及びガス導入室ハウジング１７の各部材を振動溶着により一体接合することで組み立てられる。前記ガス導入部２０は、マニホールド本体１４の一体部１２ａの吸気管側溶着リブ２２に対し、ガス導入室ハウジング１７のハウジング側溶着リブ２３を振動溶着することにより構成される。すなわち、吸気管側溶着リブ２２の垂直平面部３０及び傾斜面部３２の溶着面３０ａ、３２ａに対してハウジング側溶着リブ２３の垂直平面部３１及び傾斜面部３３の溶着面３１ａ、３３ａを当接させる。この状態で、一体部１２ａに対してガス導入室ハウジング１７を垂直平面部３０，３１の溶着面３０ａ，３１ａに対する垂直方向（図５の矢印Ｐ方向）において加圧するとともに、溶着面３０ａ，３１ａの延長方向（図５の紙面と直交する方向）においてガス導入室ハウジング１７を振動させる。すると、吸気管側溶着リブ２２の垂直平面部３０及び傾斜面部３２、ハウジング側溶着リブ２３の垂直平面部３１及び傾斜面部３３の溶着面３１ａ、３３ａが互いに溶着する。この結果、マニホールド本体１４の一体部１２ａにガス導入室ハウジング１７が接合される。なお、ガス導入室ハウジング１７に対する加圧方向は、マニホールド本体１４及びガス導入室ハウジング１７の型抜き方向あるいはその反対方向である。   Now, this embodiment configured as described above is assembled by integrally joining the manifold body 14, the tank cover 15, the intake pipe housing 16, and the gas introduction chamber housing 17 by vibration welding. The gas introduction part 20 is configured by vibration welding the housing side welding ribs 23 of the gas introduction chamber housing 17 to the intake pipe side welding ribs 22 of the integral part 12 a of the manifold body 14. That is, the vertical flat surface portion 31 of the housing side welding rib 23 and the welding surfaces 31 a of the inclined surface portion 33 abut on the vertical flat surface portion 30 of the intake pipe side welding rib 22 and the welding surfaces 30 a of the inclined surface portion 32. . In this state, the gas introduction chamber housing 17 is pressurized against the integrated portion 12a in the direction perpendicular to the welding surfaces 30a and 31a of the vertical flat portions 30 and 31 (in the direction indicated by the arrow P in FIG. 5), and the welding surfaces 30a and 31a. The gas introduction chamber housing 17 is vibrated in the extending direction (direction perpendicular to the paper surface of FIG. 5). Then, the vertical plane portion 30 and the inclined surface portion 32 of the intake pipe side welding rib 22, and the vertical plane portion 31 of the housing side welding rib 23 and the welding surfaces 31 a and 33 a of the inclined surface portion 33 are welded to each other. As a result, the gas introduction chamber housing 17 is joined to the integral part 12 a of the manifold body 14. In addition, the pressurizing direction with respect to the gas introduction chamber housing 17 is the mold drawing direction of the manifold body 14 and the gas introduction chamber housing 17 or the opposite direction.

振動溶着時において、ガス導入室ハウジング１７に加えられた加圧力は、吸気管側溶着リブ２２及びハウジング側溶着リブ２３の垂直平面部３０，３１において溶着面３０ａ，３１ａに対し垂直方向に加わる。従って、溶着面３０ａ，３１ａは適切に圧着されて、充分な接合強度をもって溶着される。このとき、両傾斜面部３２，３３間の前記振動方向とは異なる方向、すなわち、傾斜面部３２，３３の傾斜方向へのすべりは、突部３４と凹部３５との嵌合により規制され、前記加圧力は、傾斜面部３２，３３間において溶着面３２ａ，３３ａ全体に対し均等に加わる。このため、溶着面３０ａ，３１ａ、３２ａ，３３ａにおいて接合強度が不足する部分の発生が防止される。この結果、マニホールド本体１４とガス導入室ハウジング１７との接合強度が安定化する。   At the time of vibration welding, the pressure applied to the gas introduction chamber housing 17 is applied to the vertical plane portions 30 and 31 of the intake pipe side welding rib 22 and the housing side welding rib 23 in a direction perpendicular to the welding surfaces 30a and 31a. Accordingly, the welding surfaces 30a and 31a are appropriately pressed and welded with sufficient bonding strength. At this time, sliding in the direction different from the vibration direction between the two inclined surface portions 32 and 33, that is, the inclination direction of the inclined surface portions 32 and 33 is restricted by the fitting between the projecting portion 34 and the concave portion 35, and the additional force is applied. The pressure is evenly applied to the entire welding surfaces 32a and 33a between the inclined surface portions 32 and 33. For this reason, generation | occurrence | production of the part which joining strength is insufficient in welding surface 30a, 31a, 32a, 33a is prevented. As a result, the bonding strength between the manifold body 14 and the gas introduction chamber housing 17 is stabilized.

この実施形態によれば、以下の各効果を得ることができる。
（１）吸気管側溶着リブ２２及びハウジング側溶着リブ２３を、互いに平行をなすとともに高低差を有する２箇所の垂直平面部３０，３１と、それらの間に位置する傾斜面部３２，３３とにより構成した。加えて、傾斜面部３２，３３に、凹凸の関係で嵌合する突部３４及び凹部３５を形成した。従って、振動溶着時における傾斜面部３２，３３間の滑りを防止し、溶着面３２ａ，３３ａ間に加わる加圧力を均等にすることができるため、マニホールド本体１４とガス導入室ハウジング１７との接合強度を向上することができる。加えて、前記特許文献１に記載の構成とは異なり、マニホールド本体１４及びガス導入室ハウジング１７において吸気管側溶着リブ２２及びハウジング側溶着リブ２３の外部に当接部及び受け部を設ける必要がないため、その型構造の複雑化を招かないようにすることができる。 According to this embodiment, the following effects can be obtained.
(1) The intake pipe side welding rib 22 and the housing side welding rib 23 are formed by two vertical plane portions 30 and 31 which are parallel to each other and have a height difference, and inclined surface portions 32 and 33 located between them. Configured. In addition, the protrusions 34 and the recesses 35 that are fitted to the inclined surfaces 32 and 33 in an uneven relationship are formed. Accordingly, slippage between the inclined surface portions 32 and 33 during vibration welding can be prevented and the pressure applied between the welding surfaces 32a and 33a can be made uniform, so that the bonding strength between the manifold body 14 and the gas introduction chamber housing 17 can be increased. Can be improved. In addition, unlike the configuration described in Patent Document 1, it is necessary to provide a contact portion and a receiving portion outside the intake pipe side welding rib 22 and the housing side welding rib 23 in the manifold main body 14 and the gas introduction chamber housing 17. Therefore, the complexity of the mold structure can be prevented.

（２）吸気管側溶着リブ２２及びハウジング側溶着リブ２３の両垂直平面部３０，３１及び傾斜面部３２，３３を、交互に位置し、全体として環状をなすようにした。従って、２つの部材を環状に溶着して外部から区画されたガス導入室２４を形成するブローバイガス導入のための構造において、上記（１）に記載の効果を得ることができる。従って、接続管２５及びガス導入口２６以外の部分を密封したガス導入部２０を形成することができ、ブローバイガスを外部に漏出させることなく適切に処理できる。   (2) The vertical plane portions 30 and 31 and the inclined surface portions 32 and 33 of the intake pipe side welding rib 22 and the housing side welding rib 23 are alternately positioned so as to form an annular shape as a whole. Therefore, the effect described in (1) above can be obtained in the structure for introducing the blow-by gas in which the two members are welded in an annular shape to form the gas introduction chamber 24 partitioned from the outside. Therefore, the gas introduction part 20 which sealed parts other than the connection pipe 25 and the gas introduction port 26 can be formed, and it can process appropriately, without making blowby gas leak outside.

なお、この実施形態は、次のように変更して具体化することも可能である。
・この発明を、インテークマニホールド１０におけるマニホールド本体１４のサージタンク１１の構成部分とタンクカバー１５との溶着構造に具体化すること。 In addition, this embodiment can also be changed and embodied as follows.
The present invention is embodied in a welded structure between the component part of the surge tank 11 of the manifold body 14 in the intake manifold 10 and the tank cover 15.

・この発明を、合成樹脂製の車両用部材、例えば燃料タンク、エアクリーナ、シリンダヘッドカバー、エアコンダクト等における２部材の溶着構造において具体化すること。
・この発明を、互いに超音波溶着される２部材の溶着構造に具体化すること。 The present invention is embodied in a two-member welding structure in a synthetic resin vehicle member, for example, a fuel tank, an air cleaner, a cylinder head cover, an air conditioner duct, or the like.
-The present invention is embodied in a two-member welding structure that is ultrasonically welded to each other.

一実施形態の内燃機関のインテークマニホールドを示す側面図。The side view which shows the intake manifold of the internal combustion engine of one Embodiment. 同じく正面図。Similarly front view. 同じく一部を破断した側面図。The side view which fractured | ruptured a part similarly. マニホールド本体の平坦部を示す正面図。The front view which shows the flat part of a manifold main body. ガス導入室を示す縦断面図。The longitudinal cross-sectional view which shows a gas introduction chamber. ガス導入室ハウジングを示す正面図。The front view which shows a gas introduction chamber housing. 図５におけるａ−ａ線断面図。FIG. 6 is a sectional view taken along line aa in FIG. 5. 吸気管側溶着リブを示すマニホールド本体の一部縦断面図。The partial longitudinal cross-sectional view of the manifold main body which shows the intake pipe side welding rib. 図６におけるｂ−ｂ線断面図。Bb sectional view taken on the line in FIG. 従来の溶着構造を有するインテークマニホールドを示す縦断面図。The longitudinal cross-sectional view which shows the intake manifold which has the conventional welding structure.

符号の説明Explanation of symbols

１０…インテークマニホールド、１２…吸気管、１４…第１部材及び一体化された複数の吸気管としてのマニホールド本体、１７…第２部材及びハウジングとしてのガス導入室ハウジング、２２…吸気管側溶着リブ、２３…ハウジング側溶着リブ、２６…ガス導入口、３０，３１…垂直平面部、３０ａ，３１ａ…溶着面、３２，３３…傾斜面部、３２ａ，３３ａ…溶着面、３４…突部、３５…凹部。   DESCRIPTION OF SYMBOLS 10 ... Intake manifold, 12 ... Intake pipe, 14 ... Manifold main body as 1st member and integrated several intake pipe, 17 ... Gas introduction chamber housing as 2nd member and housing, 22 ... Intake pipe side welding rib , 23 ... Housing side welding rib, 26 ... Gas inlet, 30, 31 ... Vertical plane part, 30a, 31a ... Welding surface, 32, 33 ... Inclined surface part, 32a, 33a ... Welding surface, 34 ... Projection part, 35 ... Recess.

Claims (4)

高低差を有するとともに互いに平行をなす２箇所の平面部と、それらの平面部間に位置する傾斜面部とを有する第１部材と、前記平面部及び傾斜面部と対応する平面部及び傾斜面部を有する第２部材とを備え、第１部材及び第２部材を、それらの前記平面部及び傾斜面部の各先端面に設けられる溶着面において溶着した溶着構造において、
前記第１部材の傾斜面部の溶着面に突部を設けるとともに、前記第２部材の傾斜面部の溶着面に、前記突部と凹凸の関係で嵌合して傾斜面部間における傾斜方向の滑りを規制する凹部を設けたことを特徴とする溶着構造。 A first member having two planar portions having a height difference and parallel to each other; an inclined surface portion positioned between the planar portions; and a planar portion and an inclined surface portion corresponding to the planar portion and the inclined surface portion. In the welded structure comprising the second member, the first member and the second member are welded on the welded surfaces provided on the respective front end surfaces of the flat surface portion and the inclined surface portion,
Provided with a collision portion on the welding surface of the inclined surface portion of the first member, the welding surface of the inclined surface of the second member, the sliding direction of inclination between the inclined surface portion to fit in relation to the projection and uneven A welding structure provided with a concave portion to be regulated . 前記第１、第２部材の両平面部及び傾斜面部は、交互に位置し、全体として環状をなしていることを特徴とする請求項１に記載の溶着構造。   2. The welding structure according to claim 1, wherein both the flat surface portions and the inclined surface portions of the first and second members are alternately positioned and have an annular shape as a whole. 前記第１部材は、インテークマニホールドの相互に一体化された複数の吸気管であり、前記第２部材は、前記吸気管の管壁の外側に溶着され、同管壁の外側にブローバイガスの導入室を区画形成するハウジングであり、前記吸気管の管壁には前記導入室内のブローバイガスを吸気管内に導入するための導入口を形成したことを特徴とする請求項１または２に記載の溶着構造。   The first member is a plurality of intake pipes integrated with each other of the intake manifold, and the second member is welded to the outside of the pipe wall of the intake pipe, and blow-by gas is introduced to the outside of the pipe wall. The welding according to claim 1 or 2, wherein an inlet for introducing blow-by gas in the introduction chamber into the intake pipe is formed in a pipe wall of the intake pipe. Construction. 高低差を有するとともに互いに平行をなす２箇所の平面部と、それらの平面部間に位置する傾斜面部とを有する第１部材と、前記平面部及び傾斜面部と対応する平面部及び傾斜面部を有する第２部材とを、それらの前記平面部及び傾斜面部の各先端面に設けられる溶着面において溶着する溶着方法であって、
前記第１部材の傾斜面部の溶着面に突部を設けるとともに、前記第２部材の傾斜面部の溶着面に、前記突部と凹凸の関係で嵌合して傾斜面部間における傾斜方向の滑りを規制する凹部を設け、
前記突部と前記凹部とを嵌合させて、傾斜面部間における滑りを規制した状態で振動溶着又は超音波溶着を行うことを特徴とする溶着方法。 A first member having two planar portions having a height difference and parallel to each other; an inclined surface portion positioned between the planar portions; and a planar portion and an inclined surface portion corresponding to the planar portion and the inclined surface portion. A welding method for welding the second member on a welding surface provided on each of the tip surfaces of the flat surface portion and the inclined surface portion,
Provided with a collision portion on the welding surface of the inclined surface portion of the first member, the welding surface of the inclined surface of the second member, the sliding direction of inclination between the inclined surface portion to fit in relation to the projection and uneven Provide a recess to regulate ,
A welding method characterized in that vibration welding or ultrasonic welding is performed in a state where slippage between inclined surface portions is regulated by fitting the protrusions and the recesses.
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