JP3215319B2 - Plug breather - Google Patents
Plug breatherInfo
- Publication number
- JP3215319B2 JP3215319B2 JP05785196A JP5785196A JP3215319B2 JP 3215319 B2 JP3215319 B2 JP 3215319B2 JP 05785196 A JP05785196 A JP 05785196A JP 5785196 A JP5785196 A JP 5785196A JP 3215319 B2 JP3215319 B2 JP 3215319B2
- Authority
- JP
- Japan
- Prior art keywords
- screw
- plug
- small
- diameter
- hexagonal head
- 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.)
- Expired - Lifetime
Links
Landscapes
- Joints That Cut Off Fluids, And Hose Joints (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は自動車等の圧力系統
の引回しを行うゴムチューブの接続に用いられるプラグ
ブリーザに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug breather used for connecting a rubber tube for routing a pressure system of an automobile or the like.
【０００２】[0002]
【従来の技術】従来、自動車等の圧力系統の引回しを行
うゴムチューブの接続に用いられるプラグブリーザは図
３に示されるように、管ねじ１１の中空部と連通される
中心孔１０ａを形成した六角頭部１０を有する金属製の
プラグ本体１２の前記六角頭部１０の中心孔１０ａに、
環状の隆条部１３ａを先方に形成した金属製の細径管１
３をロウ付けしている。このため、隆条部１３ａを形成
した細径管１３を製造する工程と、プラグ本体１２を金
属ブロックから削り出す工程と、プラグ本体１２に管ね
じ１１を形成するねじ切り工程と、前記細径管１３をプ
ラグ本体１２の六角頭部１０の中心孔１０ａに取り付け
るロウ付け工程等が必要となり、工数が多いうえに手間
が掛り製造コストが上昇するという問題があり、量産性
もよくないという問題があった。しかも、プラグ本体１
２も細径管１３も金属製であるため重量が大となり、グ
ラム単位の軽量化が要求される自動車部品としては少な
からず問題があった。2. Description of the Related Art Conventionally, as shown in FIG. 3, a plug breather used for connecting a rubber tube for routing a pressure system of an automobile or the like has a center hole 10a communicating with a hollow portion of a pipe screw 11. The center hole 10a of the hexagonal head 10 of the metal plug body 12 having the hexagonal head 10
Metal-made small-diameter tube 1 having an annular ridge 13a formed on the front side
3 is brazed. Therefore, a step of manufacturing the small-diameter tube 13 having the ridge 13a, a step of shaving the plug main body 12 from the metal block, a thread cutting step of forming the pipe screw 11 in the plug main body 12, A brazing step or the like for attaching the plug 13 to the center hole 10a of the hexagonal head 10 of the plug main body 12 is required, which requires a lot of man-hours, requires much labor, increases manufacturing costs, and has a problem that mass productivity is not good. there were. Moreover, the plug body 1
Since both the 2 and the small-diameter tube 13 are made of metal, the weight is large, and there are not a few problems as automobile parts that are required to be reduced in gram unit.
【０００３】[0003]
【発明が解決しようとする課題】本発明は工数が少なく
手間が掛からず、大量生産が容易で軽量なプラグブリー
ザを提供することを目的としたものである。SUMMARY OF THE INVENTION It is an object of the present invention to provide a lightweight plug breather which can be mass-produced, requires less man-hours and requires less labor.
【０００４】[0004]
【課題を解決するための手段】前述の目的を達成するた
めになされた本発明は、シール剤を付着させたねじ筒部
に続いて六角頭部を形成し、該六角頭部上面の裾広がり
状部をもって細径接続管部を張出させた繊維強化ポリア
ミド樹脂よりなるプラグ本体の、前記ねじ筒部に形成さ
れるねじ終端部のねじ山外径を一定に保ったまま、ねじ
終端部の谷底の深さを、その他のねじ部の谷底の深さよ
りも浅くすることにより有効断面積を大きくし、また、
前記細径接続管部の先方部に環状の隆条部を形成したこ
とを特徴とするものである。 Means for Solving the Problems To achieve the above-mentioned object,
The present invention is directed to a fiber-reinforced fiber having a hexagonal head formed following a screw cylinder to which a sealant is adhered, and a small-diameter connecting pipe portion protruding with a flared portion on the upper surface of the hexagonal head. While keeping the thread outer diameter of the screw terminal portion formed on the screw cylinder portion of the plug body made of a polyamide resin constant, the depth of the root of the screw terminal portion is set to the depth of the root of the other screw portion.
Shallower to increase the effective area,
This formed a ridge strip portion of the annular other party of the small-diameter connecting tube portion
It is characterized by the following.
【０００５】[0005]
【発明の実施の形態】次に、本発明の好ましい実施の形
態を図１、２に基づいて詳細に説明する。１は耐熱性と
強度に優れた繊維強化ポリアミド樹脂よりなるプラグ本
体であり、該プラグ本体１はシール剤９を付着させたテ
ーパ状のねじ筒部３に続く六角頭部２の上面中央部の裾
広がり状部４をもって細径接続管部５を張出させたもの
で、前記ねじ筒部３のねじ終端部の有効断面積をその他
のねじ部よりも大きくするとともに、細径接続管部５の
先方部に環状の隆条部７を形成したものである。また、
細径接続管部５の中心孔５ａとねじ筒部３の中空部３ａ
とはテーパ８を介して滑らかに接続されている。なお図
２に示すように、ねじ筒部３のねじ山外径を一定に保っ
たまま、ねじ終端部の谷底６の深さを、その他のねじ部
の谷底の深さよりも浅くすることによりねじ終端部の有
効断面積を大きくして、ねじ終端部からの破損を防止す
るようにしている。Next, a preferred embodiment of the present invention will be described in detail with reference to FIGS. Reference numeral 1 denotes a plug body made of a fiber-reinforced polyamide resin having excellent heat resistance and strength. The plug body 1 is located at the center of the upper surface of the hexagonal head 2 following the tapered screw cylinder 3 to which the sealing agent 9 is attached. in which the small-diameter connecting tube portion 5 has a flared shape portion 4 was out Zhang, the effective cross-sectional area of the threaded end of the screw cylinder portion 3 other
And an annular ridge 7 is formed at the forward end of the small-diameter connection pipe 5. Also,
Center hole 5a of small-diameter connection pipe part 5 and hollow part 3a of screw tube part 3
Are smoothly connected via a taper 8. Figure
As shown in FIG. 2, the outer diameter of the thread of the threaded cylindrical portion 3 is kept constant.
Keep the depth of the root 6 at the end of the screw
By making the depth smaller than the depth of the bottom of the thread, the effective cross-sectional area of the screw end is increased to prevent breakage from the screw end.
【０００６】このように構成されたものは、自動車等の
圧力系統の引回しの際、機器の接続孔Ｈに形成された雌
ねじに、プラグ本体１のねじ筒部３をシール剤９を介し
て螺挿し、六角頭部２にレンチ等の工具を係止させてプ
ラグ本体１を締め付ければ、プラグ本体１はねじ筒部３
をもって機器の接続孔Ｈに固定されることとなる。この
ようにしてプラグ本体１が機器に螺着された後、六角頭
部２の上面中央部に裾広がり状部４に続いて張出形成さ
れる細径接続管部５にゴムチューブＰを接続する。この
とき、接続孔Ｈに螺挿されるプラグ本体１のねじ筒部３
のねじ終端部の有効断面積を大きくしているので、ねじ
筒部３のねじ締めによるねじ終端部への応力集中があっ
ても、ねじ終端部から破断されることは的確に防止され
る。しかも、プラグ本体１と細径接続管部５は耐熱性と
強度に優れた繊維強化ポリアミド樹脂により成形したも
のであるから、極めて軽量で自動車用部品として好まし
いものとなる。また、全体を一体成形としているため量
産性は極めて高くコストダウンに有効となる。さらに、
細径接続管部５は六角頭部２と裾広がり状部４に続いて
張出されているので、金属と同等の強度を持ち細径接続
管部５に横方向の力が加わっても容易に折損することは
ないものである。さらに、ねじ筒部３にはシール剤９が
付着されているから、締付後は接続孔Ｈからオイルが漏
れることがないうえに、弛み止め効果が発揮され振動等
によって緩むことを的確に防止している。[0006] In such a configuration, when the pressure system of an automobile or the like is routed, the threaded cylindrical portion 3 of the plug main body 1 is inserted into the female screw formed in the connection hole H of the device via the sealant 9. If the plug body 1 is screwed and a tool such as a wrench is fixed to the hexagonal head 2 and the plug body 1 is tightened, the plug body 1 is
Is fixed to the connection hole H of the device. After the plug body 1 is screwed into the device in this way, the rubber tube P is connected to the small-diameter connection pipe portion 5 that is formed so as to protrude following the flared portion 4 at the center of the upper surface of the hexagonal head 2. I do. At this time, the threaded cylindrical portion 3 of the plug body 1 that is screwed into the connection hole H
Since the effective cross-sectional area of the screw terminal portion is increased, even if stress is concentrated on the screw terminal portion due to screw tightening of the screw cylinder portion 3, it is accurately prevented from being broken from the screw terminal portion. In addition, since the plug body 1 and the small-diameter connection pipe section 5 are formed of a fiber-reinforced polyamide resin having excellent heat resistance and strength, they are extremely lightweight and are preferable as automobile parts. Further, since the whole is integrally molded, mass productivity is extremely high, which is effective for cost reduction. further,
Since the small-diameter connection pipe portion 5 is extended following the hexagonal head 2 and the hem-spread portion 4, it has the same strength as metal and is easy even when a lateral force is applied to the small-diameter connection pipe portion 5. It does not break. Furthermore, since the sealing agent 9 is adhered to the screw cylinder portion 3, oil does not leak from the connection hole H after tightening, and a loosening prevention effect is exerted to prevent the loosening due to vibration or the like. are doing.
【０００７】[0007]
【発明の効果】本発明は前記説明によって明らかなよう
に、プラグ本体と細径接続管部を耐熱性と強度に優れた
繊維強化ポリアミド樹脂により一体成形したものである
から、軽量で量産が容易となり、大幅なコストダウンを
図ることができ、しかも、高温下における強度が要求さ
れる自動車エンジンに用いることができる。また、金属
製の２部材をロウ付けして一体化する場合に比較し工数
を大幅に減らすことができ、工数の低減によるコストダ
ウン及び量産性の向上を図ることができる等種々の利点
を有するものである。従って、本発明は従来の問題点を
解決したプラグブリーザとして業界の発展に寄与すると
ころ大なものである。As is apparent from the above description, the present invention is formed by integrally molding the plug body and the small-diameter connection pipe with a fiber-reinforced polyamide resin having excellent heat resistance and strength, so that it is lightweight and easy to mass-produce. Thus, the cost can be significantly reduced, and the present invention can be used for an automobile engine that requires strength at high temperatures. Also, compared to the case where two metallic members are brazed and integrated, the number of man-hours can be greatly reduced, and there are various advantages such as reduction in man-hours and cost reduction and improvement in mass productivity. Things. Therefore, the present invention greatly contributes to the development of the industry as a plug breather that solves the conventional problems.
【図１】本発明の好ましい実施の形態を示す一部切欠正
面図である。FIG. 1 is a partially cutaway front view showing a preferred embodiment of the present invention.
【図２】本発明のねじ筒部の拡大図である。FIG. 2 is an enlarged view of a screw cylinder part of the present invention.
【図３】従来のプラグブリーザを示す一部切欠正面図で
ある。FIG. 3 is a partially cutaway front view showing a conventional plug breather.
１ プラグ本体 ２ 六角頭部 ３ ねじ筒部 ４ 裾広がり状部 ５ 細径接続管部 ７ 隆条部 ９ シール剤 DESCRIPTION OF SYMBOLS 1 Plug body 2 Hex head 3 Screw cylinder part 4 Spread hem part 5 Small diameter connection pipe part 7 Ridge part 9 Sealant
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−65989（ＪＰ，Ａ) 実開 昭56−25890（ＪＰ，Ｕ) 実開 平３−102683（ＪＰ，Ｕ) 実開 昭50−5216（ＪＰ，Ｕ) 実開 昭56−122891（ＪＰ，Ｕ) 実開 平６−51684（ＪＰ，Ｕ) 実開 昭59−174447（ＪＰ，Ｕ) 実開 昭61−23576（ＪＰ，Ｕ) 実開 平１−115082（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16L 33/00 - 33/26 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-65989 (JP, A) JP-A-56-25890 (JP, U) JP-A-3-102683 (JP, U) JP-A-50- 5216 (JP, U) Fully open 1988-128,891 (JP, U) Fully open Hei 6-51684 (JP, U) Fully open, 59-174447 (JP, U) Really open, 61-23576 (JP, U) Hira 1-15082 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) F16L 33/00-33/26
Claims (1)
六角頭部を形成し、該六角頭部上面の裾広がり状部をも
って細径接続管部を張出させた繊維強化ポリアミド樹脂
よりなるプラグ本体の、前記ねじ筒部に形成されるねじ
終端部のねじ山外径を一定に保ったまま、ねじ終端部の
谷底の深さを、その他のねじ部の谷底の深さよりも浅く
することにより有効断面積を大きくし、また、前記細径
接続管部の先方部に環状の隆条部を形成したことを特徴
とするプラグブリーザ。1. A fiber reinforced polyamide resin having a hexagonal head formed following a screw cylinder to which a sealant is adhered, and a small-diameter connecting pipe portion protruding with a flared portion on the upper surface of the hexagonal head. Of the plug body, the depth of the root of the screw terminal portion is shallower than the depth of the root of the other screw portion , while keeping the thread outer diameter of the screw terminal portion formed in the screw tube portion constant. The plug breather is characterized in that the effective cross-sectional area is increased by forming the same, and an annular ridge is formed at the forward end of the small-diameter connection pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05785196A JP3215319B2 (en) | 1996-03-14 | 1996-03-14 | Plug breather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05785196A JP3215319B2 (en) | 1996-03-14 | 1996-03-14 | Plug breather |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09250671A JPH09250671A (en) | 1997-09-22 |
| JP3215319B2 true JP3215319B2 (en) | 2001-10-02 |
Family
ID=13067497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05785196A Expired - Lifetime JP3215319B2 (en) | 1996-03-14 | 1996-03-14 | Plug breather |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3215319B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425899C (en) * | 2003-06-12 | 2008-10-15 | 伊利诺斯器械工程公司 | Pipe nipple |
| GB2412416B (en) * | 2004-03-22 | 2008-04-16 | Tokai Rubber Ind Ltd | Quick connector |
| JP6497861B2 (en) * | 2014-08-04 | 2019-04-10 | 株式会社ブリヂストン | Pipe fitting |
| JP6680456B2 (en) * | 2014-08-04 | 2020-04-15 | 株式会社ブリヂストン | Pipe fitting |
| JP6838852B2 (en) * | 2014-08-04 | 2021-03-03 | 株式会社ブリヂストン | Pipe fitting member |
-
1996
- 1996-03-14 JP JP05785196A patent/JP3215319B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09250671A (en) | 1997-09-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20010713 |
|
| R250 | Receipt of annual fees |
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|
| FPAY | Renewal fee payment (event date is renewal date of database) |
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|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130727 Year of fee payment: 12 |
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| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |