JP5318379B2 - Quick connector - Google Patents

Quick connector Download PDF

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JP5318379B2
JP5318379B2 JP2007189460A JP2007189460A JP5318379B2 JP 5318379 B2 JP5318379 B2 JP 5318379B2 JP 2007189460 A JP2007189460 A JP 2007189460A JP 2007189460 A JP2007189460 A JP 2007189460A JP 5318379 B2 JP5318379 B2 JP 5318379B2
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housing
confirmation member
tube
quick connector
coupling
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JP2009024800A (en
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田 宏 幸 岡
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Sanoh Industrial Co Ltd
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Sanoh Industrial Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/098—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of flexible hooks
    • F16L37/0985—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of flexible hooks the flexible hook extending radially inwardly from an outer part and engaging a bead, recess or the like on an inner part
    • F16L37/0987—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of flexible hooks the flexible hook extending radially inwardly from an outer part and engaging a bead, recess or the like on an inner part the flexible hook being progressively compressed by axial tensile loads acting on the coupling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L2201/00—Special arrangements for pipe couplings
    • F16L2201/10—Indicators for correct coupling

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Description

本発明は、自動車の燃料供給配管をはじめとする各種配管でチューブ同士の接続に用いられるクイックコネクタに係り、特に、チューブが正しい結合位置まで入ってリテーナと完全に結合したことを確認する結合確認部材を利用できるクイックコネクタに関する。   The present invention relates to a quick connector used for connecting tubes in various pipes including a fuel supply pipe of an automobile, and in particular, a coupling check for confirming that the tube enters a correct coupling position and is completely coupled to a retainer. It is related with the quick connector which can utilize a member.

例えば、自動車の燃料供給配管では、燃料チューブを接続する管継手としてクイックコネクタが広く用いられている。このクイックコネクタは、チューブの一方に取り付け、他方の接続すべき相手方のチューブをクイックコネクターのハウジングに挿入してから、リテーナを押し込むことで、ボルト等の締結要素を用いることなく、簡単にワンタッチで接続することができる。
図８は、クイックコネクタの従来例を示す。参照番号１は、クイックコネクタのハウジングを示し、参照番号２は、接続する相手方のチューブであり、この相手方のチューブ２の末端部には、外周部を周回するスプール部２ａが端末加工により形成されている。 For example, in a fuel supply pipe of an automobile, a quick connector is widely used as a pipe joint for connecting a fuel tube. This quick connector is attached to one of the tubes, the other tube to be connected is inserted into the housing of the quick connector, and then the retainer is pushed in, without using any fastening elements such as bolts. Can be connected.
FIG. 8 shows a conventional example of a quick connector. Reference numeral 1 indicates a housing of the quick connector, and reference numeral 2 indicates a counterpart tube to be connected. A spool portion 2a that circulates around the outer peripheral portion is formed at the end of the counterpart tube 2 by terminal processing. ing.

参照番号５は、相手方のチューブ２をハウジング１と結合するリテーナである。このリテーナ５は、ハウジング１のパイプ挿入口から装着されるようになっており、このリテーナ５の装着されているハウジング１に相手方のチューブ２を挿入すると、リテーナ５の爪６の先端にスプール部２ａが係合するので、相手方のチューブ２を抜けないように拘束することができる。このようにクイックコネクタでは、ボルト等の締結要素を用いることなく、ワンタッチで簡単にチューブ同士を接続することができる。   Reference numeral 5 denotes a retainer that couples the opposite tube 2 to the housing 1. The retainer 5 is mounted from the pipe insertion port of the housing 1. When the counterpart tube 2 is inserted into the housing 1 to which the retainer 5 is mounted, a spool portion is formed at the tip of the claw 6 of the retainer 5. Since 2a engages, it can restrain so that the other party tube 2 may not come off. As described above, in the quick connector, the tubes can be easily connected with one touch without using a fastening element such as a bolt.

ところで、クイックコネクタでは、チューブ２の挿入が不十分であると、チューブ２のスプール部２ａには、リテーナ５の爪６が係合しないので、不完全結合の状態となるが、外見上、不完全結合状態と、完全に結合した状態との区別は難しい。   By the way, in the quick connector, if the tube 2 is not sufficiently inserted, the claw 6 of the retainer 5 does not engage with the spool portion 2a of the tube 2, so that it is incompletely coupled. It is difficult to distinguish between a fully coupled state and a completely coupled state.

そこで、完全結合状態が外見上一目で区別できるように工夫したクイックコネクタが考案されており、例えば、特許文献１に記載されているものがある。このクイックコネクタでは、リテーナーとは別に結合確認部材を利用し、相手方のチューブ２を完全結合位置まで十分に挿入してリテーナと結合させなければ、結合確認部材をクイックコネクタから簡単には取り外せない構造になっている。   In view of this, a quick connector has been devised so that the completely coupled state can be distinguished at a glance in appearance, for example, there is one described in Patent Document 1. In this quick connector, a connection confirmation member is used separately from the retainer, and the connection confirmation member cannot be easily detached from the quick connector unless the mating tube 2 is fully inserted to the fully coupled position and coupled to the retainer. It has become.

図９に示すように、結合確認部材７は、タブ部８と、一対の脚部９ａ、９ｂを有するＵ字形の結合チェック部とが一体になった樹脂製の部品である。脚部９ａ、９ｂには、爪１０ａ、１０ｂが向かい合うように形成されている。この爪１０ａ１０ｂの間隔は、相手方のチューブ２の外径とほぼ等しくなっている。結合確認部材７は、チューブ２が完全結合位置にあるときのスプール部２ａの位置に対応した位置に装着される。チューブ２を完全結合位置まで挿入すると、爪１０ａ、１０ｂがスプール部２ａに当たって脚部９ａ、９ｂが押し拡げられるようになっている。したがって、リテーナ５の爪６が完全にチューブ２のスプール部２ａに完全に係合していれば、タブ部８を摘んで引っ張ると、結合確認部材７を簡単にハウジング１から取り外すことができる。   As shown in FIG. 9, the connection confirmation member 7 is a resin part in which a tab portion 8 and a U-shaped connection check portion having a pair of legs 9a and 9b are integrated. The legs 9a and 9b are formed with claws 10a and 10b facing each other. The interval between the claws 10a10b is substantially equal to the outer diameter of the counterpart tube 2. The coupling confirmation member 7 is mounted at a position corresponding to the position of the spool portion 2a when the tube 2 is in the fully coupled position. When the tube 2 is inserted to the complete coupling position, the claws 10a and 10b hit the spool portion 2a and the leg portions 9a and 9b are expanded. Therefore, if the claw 6 of the retainer 5 is completely engaged with the spool portion 2 a of the tube 2, the coupling confirmation member 7 can be easily removed from the housing 1 by picking and pulling the tab portion 8.

これに対して、チューブ２の挿入が不十分であると、脚部９ａ、９ｂの爪１０ａ、１０ｂがハウジング１に引っ掛かるので、タブ部８を摘んで引っ張っても結合確認部材７は簡単には取り外れずに、切欠部１１のところから破断してしまう。これによって、不完全結合状態にあることが確認される。
特開平１１−２３０４５６号公報 On the other hand, if the tube 2 is not sufficiently inserted, the claws 10a, 10b of the leg portions 9a, 9b are hooked on the housing 1, so that even if the tab portion 8 is picked and pulled, the connection confirmation member 7 can be simply Without being removed, it breaks from the notch 11. This confirms the incompletely coupled state.
Japanese Patent Laid-Open No. 11-230456

しかしながら、結合確認部材７を利用したクイックコネクタでは、図９ において、結合確認部材７をタブ部８矢印で示すようにまっすぐに引っ張る分には問題がなく、正常に機能する。   However, in the quick connector using the coupling confirmation member 7, there is no problem in pulling the coupling confirmation member 7 straight as shown by the arrow of the tab portion 8 in FIG.

ところが、図１０に矢印で示すように、結合確認部材７を斜めの方向に引っ張ると、片方の脚部９ｂの方が外れてしまう結果、クイックコネクタが実際には不完全結合状態にあるにもかかわらず、結合確認部材７は破断せずに外れてしまう場合がある。   However, as shown by the arrow in FIG. 10, when the coupling confirmation member 7 is pulled in an oblique direction, one leg portion 9b is detached, so that the quick connector is actually in an incompletely coupled state. Regardless, the connection confirmation member 7 may come off without breaking.

そこで、本発明の目的は、前記従来技術の有する問題点を解消し、結合確認部材を斜めの方向に引っ張っても外れることがなく、クイックコネクタと相手方のチューブが不完全結合状態にあれば、確実に機能し、完全結合していると誤認することのないクイックコネクタを提供することにある。   Therefore, the object of the present invention is to solve the problems of the prior art, without detaching even if the coupling confirmation member is pulled in an oblique direction, and if the quick connector and the other tube are in an incompletely coupled state, It is to provide a quick connector that functions reliably and does not misidentify as fully connected.

前記の目的を達成するために、請求項１に係る発明は、スプール部を有する相手方のチューブの端末が挿入されるハウジングと、前記スプール部をロック爪で拘束し前記相手方チューブと前記ハウジングとを結合するリテーナと、前記スプール部と前記リテーナとが完全に結合する位置まで前記チューブが十分に挿入されたときに、前記スプール部により爪が押し出されて引掛穴から外れ、引き抜けるようになる結合確認部材を有するクイックコネクタにおいて、前記ハウジングの側面の２カ所に開口する引掛穴にそれぞれ係合する爪と前記ハウジングの一部に係合し前記ハウジングの円周方向への当該結合確認部材の動きを規制する補助係止部を前記結合確認部材に設け、前記結合確認部材が前記ハウジングの円周方向に斜めに引っ張られたときに、少なくとも一方の爪と前記補助係止部の２点で当該結合確認部材が前記ハウジングに係止されるようにし、前記結合確認部材の補助係止部は、ハウジングのチューブ挿入口の縁部からハウジング軸方向に突き出た被係止片の両側を挟むように係止する突起を有することを特徴とするものである。
また、請求項２に係る発明は、スプール部を有する相手方のチューブの端末が挿入されるハウジングと、前記スプール部をロック爪で拘束し前記相手方チューブと前記ハウジングとを結合するリテーナと、前記スプール部と前記リテーナとが完全に結合する位置まで前記チューブが十分に挿入されたときに、前記スプール部により爪が押し出されて引掛穴から外れ、引き抜けるようになる結合確認部材を有するクイックコネクタにおいて、
前記ハウジングの側面の２カ所に開口する引掛穴にそれぞれ係合する爪と前記ハウジングの一部に係合し前記ハウジングの円周方向への当該結合確認部材の動きを規制する補助係止部前記結合確認部材が前記ハウジングの円周方向に斜めに引っ張られたときに、少なくとも一方の爪と前記補助係止部の２点で当該結合確認部材が前記ハウジングに係止されるようにし、前記結合確認部材の補助係止部は、ハウジングのチューブ挿入口の縁部からハウジング軸方向に突き出た被係止片に形成した切欠部に嵌合する突起を有することを特徴とするものである。 In order to achieve the above object, the invention according to claim 1 includes a housing into which an end of a counterpart tube having a spool portion is inserted, and the spool portion is restrained by a lock claw so as to connect the counterpart tube and the housing. When the tube is fully inserted to the position where the retainer to be coupled and the spool portion and the retainer are completely coupled, the claw is pushed out by the spool portion, and the coupling is confirmed to be pulled out. In the quick connector having a member, the movement of the coupling confirmation member in the circumferential direction of the housing by engaging with a claw that engages with a hook hole that is opened at two places on the side surface of the housing and a part of the housing. an auxiliary locking portion for restricting the binding confirmation member, said coupling check member is pulled obliquely in the circumferential direction of the housing When, as the binding confirmation member is engaged with the housing at two points with at least one claw said auxiliary locking portion, the auxiliary locking portion of the coupling confirmation member, the edges of the tube insertion port of the housing It has the protrusion which latches so that both sides of the to-be-latched piece which protruded in the housing axial direction from the part may be pinched | interposed .
According to a second aspect of the present invention, there is provided a housing into which an end of a counterpart tube having a spool portion is inserted, a retainer for restraining the spool portion with a lock claw and coupling the counterpart tube and the housing, and the spool In a quick connector having a connection confirmation member that allows the claw to be pushed out by the spool portion to be removed from the catching hole and pulled out when the tube is fully inserted to a position where the portion and the retainer are completely coupled,
A claw that engages with hook holes that are opened at two locations on the side surface of the housing, and an auxiliary locking portion that engages with a part of the housing and restricts the movement of the coupling confirmation member in the circumferential direction of the housing. When the coupling confirmation member is pulled obliquely in the circumferential direction of the housing, the coupling confirmation member is locked to the housing at two points of at least one claw and the auxiliary locking portion, and the coupling The auxiliary locking portion of the confirmation member has a protrusion that fits into a notch formed in the locked piece protruding in the housing axial direction from the edge of the tube insertion port of the housing .

本発明によれば、不完全結合のときに結合確認部材を斜めの方向に引っ張っても外れることがなく、クイックコネクタと相手方のチューブが不完全結合状態にあれば、確実に機能し、完全結合していると誤認することをなくすことができる。   According to the present invention, even if the connection confirmation member is pulled in an oblique direction when incompletely connected, it does not come off, and if the quick connector and the opposite tube are in an incompletely connected state, they function reliably and are fully connected. You can avoid misidentifying that you are doing.

以下、本発明によるクイックコネクタの一実施形態について、添付の図面を参照しながら説明する。
第１実施形態
図１は、本発明の一実施形態によるクイックコネクタの分解図で、図２は、クイックコネクタのハウジングの一部断面側面図である。これらの図において、参照番号２０は、クイックコネクタを示す。１２はクイックコネクタのハウジングで、１６がリテーナである。このクイックコネクター２０は、ハウジング１２にリテーナ１６を装着した状態で相手方のチューブ１４を押し込むと、リテーナ１６によって、ハウジング１２とチューブ１４とがワンタッチで結合するように構成されている。参照番号１８は、チューブ１４が正しい結合位置まで挿入されたことを確認するための結合確認部材を示す。 Hereinafter, an embodiment of a quick connector according to the present invention will be described with reference to the accompanying drawings.
First embodiment
FIG. 1 is an exploded view of a quick connector according to an embodiment of the present invention, and FIG. 2 is a partial sectional side view of a housing of the quick connector. In these figures, reference numeral 20 indicates a quick connector. Reference numeral 12 denotes a quick connector housing, and 16 denotes a retainer. The quick connector 20 is configured such that when the mating tube 14 is pushed in with the retainer 16 mounted on the housing 12, the housing 12 and the tube 14 are coupled with each other by the retainer 16. Reference numeral 18 indicates a coupling confirmation member for confirming that the tube 14 has been inserted to the correct coupling position.

相手方のチューブ１４は、金属製または樹脂製のチューブであって、端末加工を施すことにより、端末から所定の距離だけ離れた位置に、外周部を周回するスプール部１５が形成されている。   The counterpart tube 14 is a metal or resin tube, and a spool portion 15 that circulates around the outer peripheral portion is formed at a position away from the end by a predetermined distance by performing end processing.

クイックコネクタ１０のハウジング１２は、相手方のチューブ１４が挿入される挿入口１９が開口している雌形の継手を構成するとともに、樹脂製のチューブ１７を圧入により取り付け可能な雄形の圧入取付部２１が一体となっている。このチューブ１７には、ゴム製のチューブが用いられることもある。   The housing 12 of the quick connector 10 constitutes a female joint in which an insertion port 19 into which a counterpart tube 14 is inserted is opened, and a male press-fit mounting portion to which a resin tube 17 can be attached by press-fitting. 21 is integrated. The tube 17 may be a rubber tube.

次に、リテーナ１６について説明すると、このリテーナ１６は、相手方のチューブ１４の外径とほぼ同じ内径のリング部２４と側枠部２５ａ、２５ｂからなる筒形のプラスチック製部材である。側枠部２５ａ、２５ｂは半径の内外方向に撓めるだけ可撓性を有しており、相手方のチューブ１４のスプール部１５に係合するロック爪２６ａ、２６ｂがそれぞれ一体に形成されている。そして各ロック爪２６ａ、２６ｂの外側面には、段差部２３ａ、２３ｂが形成されている。   Next, the retainer 16 will be described. The retainer 16 is a cylindrical plastic member including a ring portion 24 and side frame portions 25a and 25b having an inner diameter substantially the same as the outer diameter of the counterpart tube 14. The side frame portions 25a and 25b are flexible so as to bend inward and outward in the radius, and lock claws 26a and 26b that engage with the spool portion 15 of the opposite tube 14 are integrally formed. . Stepped portions 23a and 23b are formed on the outer surfaces of the lock claws 26a and 26b.

一方、ハウジング１２の側面には、各ロック爪２６ａ、２６ｂに対応するように窓部２７ａ、２７ｂが開口している。したがって、リテーナ１６をハウジング１２のチューブ挿入口１９から挿入すると、ロック爪２６ａ、２６ｂの段差部２３ａ、２３ｂが、窓部２７ａ、２７ｂの挿入口側の縁に着脱可能に係合するようになっているので、ハウジング１２から外れないように装着することができる。   On the other hand, windows 27a and 27b are opened on the side surface of the housing 12 so as to correspond to the lock claws 26a and 26b. Therefore, when the retainer 16 is inserted from the tube insertion port 19 of the housing 12, the step portions 23a and 23b of the lock claws 26a and 26b are detachably engaged with the edges of the window portions 27a and 27b on the insertion port side. Therefore, it can be mounted so as not to be detached from the housing 12.

次に、結合確認部材１８について説明する。
図１に示すように、本実施形態では、結合確認部材１８は、全体としてＵ字形に延びる脚部３０ａ、３０ｂとタブ部３２とが一体になった樹脂製の部材である。脚部３０ａ、３０ｂは平行に延びるとともに、内側に対向する向きに爪３１ａ、３１ｂが形成されている。タブ部３２は、結合確認部材１８を引っ張るために指を掛けやすいようにリング状になっている。また、タブ部３２には、一定以上の力で引っ張ると破断する弱め部３３が形成されている。 Next, the coupling confirmation member 18 will be described.
As shown in FIG. 1, in this embodiment, the connection confirmation member 18 is a resin member in which leg portions 30a and 30b extending in a U shape as a whole and a tab portion 32 are integrated. The leg portions 30a and 30b extend in parallel, and claws 31a and 31b are formed in a direction facing the inside. The tab portion 32 has a ring shape so that a finger can be easily hooked to pull the connection confirmation member 18. Further, the tab portion 32 is formed with a weakened portion 33 that is broken when pulled by a force of a certain level or more.

ハウジング１２の側面には、結合確認部材１８の爪３１ａ、３１ｂがそれぞれ係合する引掛穴３４ａ、３４ｂが２カ所に形成されている。引掛穴３４ａ、３４ｂは、ハウジング１２の外周面を周方向に延びるリブ３３ａ、３３ｂに挟まれた位置に形成されている。なお、リブ３３ａ、３３ｂは、結合確認部材１８の脚部３０ａ、３０ｂが外れないように保護するとともに、ハウジング１２を組み付け目際の移動の案内となるようになっている。   On the side surface of the housing 12, hook holes 34 a and 34 b are formed at two locations where the claws 31 a and 31 b of the coupling confirmation member 18 are respectively engaged. The hooking holes 34a and 34b are formed at positions sandwiched by ribs 33a and 33b extending in the circumferential direction on the outer peripheral surface of the housing 12. The ribs 33a and 33b protect the leg portions 30a and 30b of the coupling confirmation member 18 from being detached, and serve as a guide for movement when the housing 12 is assembled.

本実施形態では、結合確認部材１８は、爪３１ａ、３１ｂを主たる係止部として、これに加えてさらに補助係止部３６を有している。この補助係止部３６は、タブ部３２と脚部３０ａ、３０ｂが連結している部分から垂直に張り出した矩形片からなり、２つの突起３７ａ、３７ｂが脚部３０ａ、３０ｂの延びる側に突き出るように形成されている。他方、ハウジング１２のチューブ挿入口１９の縁部からハウジング軸方向に突き出た被係止片３８が形成されており、この２つの突起３７ａ、３７ｂは、被係止片３８を両側から挟むように係止するようになっている。   In the present embodiment, the coupling confirmation member 18 includes the claws 31a and 31b as main locking portions, and further includes an auxiliary locking portion 36 in addition to this. The auxiliary locking portion 36 is a rectangular piece projecting vertically from the portion where the tab portion 32 and the leg portions 30a, 30b are connected, and the two protrusions 37a, 37b protrude to the side where the leg portions 30a, 30b extend. It is formed as follows. On the other hand, a locked piece 38 protruding in the housing axial direction from the edge of the tube insertion port 19 of the housing 12 is formed, and these two protrusions 37a and 37b sandwich the locked piece 38 from both sides. It is designed to be locked.

本実施形態によるクイックコネクタは、以上のように構成されるものであり、次に、その作用並びに効果について説明する。
ハウジング１２にチューブ１４を結合位置まで挿入すると、チューブ１４のスプール部１５は結合確認部材１８の爪３１ａ、３１ｂに当たってこれを押し出し、図２、図３において、脚部３０ａ、３０ｂを押し拡げる。これにより、爪３１ａ、３１ｂは、引掛穴３４ａ、３４ｂから外れる状態になる。したがって、結合確認部材１８のタブ部３２に指をかけて引っ張ると、結合確認部材１８を簡単に取り外すことができる。 The quick connector according to the present embodiment is configured as described above. Next, its operation and effect will be described.
When the tube 14 is inserted into the housing 12 to the coupling position, the spool portion 15 of the tube 14 hits and pushes the claws 31a and 31b of the coupling confirmation member 18 to expand the leg portions 30a and 30b in FIGS. As a result, the claws 31a and 31b are detached from the catching holes 34a and 34b. Therefore, when the tab 32 of the coupling confirmation member 18 is pulled with a finger, the coupling confirmation member 18 can be easily removed.

このとき、チューブ１４を抜管させる軸方向の力が作用しても、リテーナ１６のロック爪２６ａ、２６ｂはチューブ１４の軸方向の移動を阻止し、抜けないようにハウジング１２とチューブ１４とを結合させる。したがって、結合確認部材１８を引っ張って取り外せるということは、リテーナ１６がチューブ１４のスプール部１５と完全に結合した状態にあることを意味するので、これにより結合を確認することができる。   At this time, even if an axial force for extracting the tube 14 is applied, the locking claws 26a and 26b of the retainer 16 prevent the tube 14 from moving in the axial direction and connect the housing 12 and the tube 14 so as not to come off. Let Therefore, being able to remove the coupling confirmation member 18 by pulling means that the retainer 16 is completely coupled to the spool portion 15 of the tube 14, so that the coupling can be confirmed.

他方、チューブ１４の挿入が不十分であるために、スプール部１５が中途半端な位置にあるときは、図４に示すように、結合確認部材１８の爪３１ａ、３１ｂは、スプール部１５によって押し出されない。この状態のまま、結合確認部材１８を引っ張って取り外そうとすると、爪３１ａ、３１ｂが引掛穴３４ａ、３４ｂの上縁に引っ掛かって外すことができない。そのまま、引っ張り続けると弱め部３３が破断するので、これにより、リテーナ１６とスプール部１５が完全に結合していないことがわかり、不完全結合状態が生じるのを確実に防止できる。   On the other hand, when the spool portion 15 is in a halfway position due to insufficient insertion of the tube 14, the claws 31 a and 31 b of the connection confirmation member 18 are pushed by the spool portion 15 as shown in FIG. 4. Not issued. If the coupling confirmation member 18 is pulled and removed in this state, the claws 31a and 31b cannot be removed by being caught on the upper edges of the catching holes 34a and 34b. If the pulling is continued as it is, the weakened portion 33 is broken, so that it can be seen that the retainer 16 and the spool portion 15 are not completely joined, and an incompletely joined state can be reliably prevented.

以上は、結合確認部材１８を正常に操作した場合の作用である。
ところで、実際の配管接続作業でクイックコネクタを取り扱う場面では、図５に示すように、結合確認部材１８を斜めの方向に引っ張ってしまうことがしばしば起こる。ここで、結合確認部材１８を引っ張る方向について、斜め方向であるとは、次のような力の方向をいう。 The above is the operation when the connection confirmation member 18 is normally operated.
By the way, in the scene where the quick connector is handled in the actual pipe connection work, as shown in FIG. 5, the connection confirmation member 18 is often pulled in an oblique direction. Here, with respect to the direction in which the connection confirmation member 18 is pulled, the oblique direction means the following force direction.

図５において、矢印Ａで示す方向は、結合確認部材１８をまっすぐに引っ張り正常な操作をするときの方向で、脚部３０ａ、３０ｂには均等な力が加わる方向である。これに対して、矢印Ｂまたは矢印Ｃで示す方向のように、矢印Ａの方向と角度をなす方向であり、別の言い方をすれば、結合確認部材１８の脚部３０ａ、３０ｂは均等な力で引っ張れず、また、脚部３０ａ、３０ｂの爪３１ａ、３１ｂうち、一方の爪が外れるような力が加わる方向である。   In FIG. 5, a direction indicated by an arrow A is a direction when the coupling confirmation member 18 is pulled straight to perform a normal operation, and an equal force is applied to the legs 30a and 30b. On the other hand, it is a direction that forms an angle with the direction of the arrow A, such as the direction indicated by the arrow B or the arrow C. In other words, the leg portions 30a and 30b of the coupling confirmation member 18 have an equal force. This is a direction in which a force is applied such that one of the claws 31a, 31b of the leg portions 30a, 30b is released.

結合確認部材１８には、主たる係止部として機能する爪３１ａ、３１ｂに加えて、補助係止部３６がある。このため、チューブ１４の挿入が不十分でスプール部１５がリテーナ１６との完全結合位置に到達していないにもかかわらず、結合確認部材１８を斜めの方向に引っ張ったとしても、次のようにして、少なくとも爪３１ａ、３１ｂのうち、一方の爪と、補助係止部３６の２点でハウジング１２に係止できる。   In addition to the claws 31a and 31b functioning as the main locking portions, the coupling confirmation member 18 has an auxiliary locking portion 36. For this reason, even if the coupling check member 18 is pulled in an oblique direction even though the tube 14 is not sufficiently inserted and the spool portion 15 has not reached the fully coupled position with the retainer 16, the following is performed. Thus, at least two of the claws 31a and 31b and the auxiliary locking portion 36 can be locked to the housing 12.

このような斜めの方向、例えば図５において矢印Ｂの方向に結合確認部材１８を引っ張ったとすると、結合確認部材１８の片方の脚部３０ａの爪３１ａ方は、引掛穴３４ａから外れてしまう可能性がある。しかし、引張る力の方向側にある方の脚部３０ｂの爪３１ｂは、引掛穴３４ｂに係止した状態を保つことに加えて、補助係止部３６は被係止片３８を両側から挟むように係合しているので、結合確認部材１８は、外れることがない。矢印Ｃの方向に引っ張った場合でも、爪３１ａと被係止片３８の２点で係止した状態が保たれるのは同様である。
このようにして、クイックコネクタが実際には不完全結合状態にあるにもかかわらず、結合確認部材１８を引っ張ったところ外れてしまい、完全結合位置にあると誤認してしまうことを未然に防止できる。 If the coupling confirmation member 18 is pulled in such an oblique direction, for example, in the direction of the arrow B in FIG. 5, the claw 31a of one leg 30a of the coupling confirmation member 18 may be disengaged from the catching hole 34a. There is. However, in addition to keeping the claw 31b of the leg 30b on the direction of the pulling force in the hooking hole 34b, the auxiliary locking portion 36 holds the locked piece 38 from both sides. Because of the engagement, the connection confirmation member 18 does not come off. Even when it is pulled in the direction of the arrow C, it is the same that the locked state at the two points of the claw 31a and the locked piece 38 is maintained.
In this way, it is possible to prevent the quick connector from being mistakenly identified as being in the fully-coupled position when it is pulled out, even though the quick connector is actually incompletely coupled. .

なお、完全結合状態にあれば、まっすぐ矢印Ａ方向に結合確認部材１８を引っ張れば簡単に外れ、矢印Ｂ、Ｃ方向のように斜めの方向に引っ張っても簡単に外れることはもちろんである。   It should be noted that, in the completely coupled state, it can be easily detached by pulling the coupling confirmation member 18 straight in the direction of arrow A, and it can be easily detached by pulling in an oblique direction such as arrows B and C.

第２実施形態
次に、図６を参照しながら、本発明の第２の実施形態によるクイックコネクタについて説明する。 Second embodiment
Next, a quick connector according to a second embodiment of the present invention will be described with reference to FIG.

この第２実施形態では、結合確認部材１８の補助係止部３６の係合構造について、第１実施形態のように、補助係止部３６の突起３７ａ、３７ｂを形成する代わりに、突起４１を一つ形成している。そして、ハウジング１２のチューブ挿入口１９に形成した被係止片３８には、切欠部４２を形成しておき、突起４１を切欠部４２に嵌合させる構造となっている。これ以外の構成は、第１実施形態と同様であり、図１と同一の構成要素には同一の参照符号を付して説明は省略する。   In the second embodiment, with respect to the engagement structure of the auxiliary locking portion 36 of the coupling confirmation member 18, instead of forming the protrusions 37 a and 37 b of the auxiliary locking portion 36 as in the first embodiment, the protrusion 41 is provided. One is formed. A notched portion 42 is formed in the locked piece 38 formed in the tube insertion port 19 of the housing 12, and the protrusion 41 is fitted into the notched portion 42. The other configuration is the same as that of the first embodiment, and the same components as those in FIG.

以上のような第２実施形態によれば、チューブ１４のスプール部１５が結合位置にないのに、結合確認部材１８を斜め方向に引っ張った場合、脚部３０ａ、３０ｂのうち、引張る力の方向側にある方の爪は、引掛穴３４ａ、３４ｂの一方に係止したまま残り、補助係止部３６の突起４１は被係止片３８の切欠部４２に嵌合しているので、爪３２ｂと補助係止部３６の突起４１の２点で係止した状態が保たれる。したがって、クイックコネクタが実際には不完全結合状態にあるにもかかわらず、結合確認部材１８を引っ張ったところ外れてしまい、完全結合位置にあると誤認してしまうことを未然に防止できる。   According to the second embodiment as described above, when the coupling confirmation member 18 is pulled in an oblique direction even though the spool portion 15 of the tube 14 is not in the coupling position, the direction of the pulling force of the legs 30a and 30b. The claw on the side remains locked in one of the catching holes 34a, 34b, and the projection 41 of the auxiliary locking portion 36 is fitted in the notch 42 of the locked piece 38, so that the claw 32b And the state latched by two points of the protrusion 41 of the auxiliary | assistant latching | locking part 36 is maintained. Therefore, it is possible to prevent the quick connector from being mistakenly identified as being in the complete coupling position by being pulled out of the coupling confirmation member 18 even though the quick connector is actually in an incomplete coupling state.

第３実施形態
次に、図７は、本発明の第３の実施形態によるクイックコネクタを示す。この第３実施形態では、結合確認部材１８の補助係止部３６に角穴４３を形成し、この角穴に４３は、ハウジング１２の表面から突き出た突起４４が嵌合する構造となつている。 Third embodiment
Next, FIG. 7 shows a quick connector according to a third embodiment of the present invention. In the third embodiment, a square hole 43 is formed in the auxiliary locking portion 36 of the coupling confirmation member 18, and the square hole 43 has a structure in which a projection 44 protruding from the surface of the housing 12 is fitted. .

以上のような第２実施形態によれば、チューブ１４のスプール部１５が結合位置にないのに、結合確認部材１８を斜め方向に引っ張った場合、脚部３０ａ、３０ｂのうち、引張る力の方向側にある方の爪３０ａは、引掛穴３４ａ、３４ｂの一方に係止したまま残り、補助係止部３６の角穴４３には被係止片３８の突起４４が嵌合しているので、爪３２ｂと補助係止部３６の角穴４３の２点で係止した状態が保たれる。したがって、クイックコネクタが実際には不完全結合状態にあるにもかかわらず、結合確認部材１８を引っ張ったところ外れてしまい、完全結合位置にあると誤認してしまうことを未然に防止できる。   According to the second embodiment as described above, when the coupling confirmation member 18 is pulled in an oblique direction even though the spool portion 15 of the tube 14 is not in the coupling position, the direction of the pulling force of the legs 30a and 30b. The claw 30a on the side remains locked in one of the catching holes 34a and 34b, and the projection 44 of the locked piece 38 is fitted in the square hole 43 of the auxiliary locking portion 36. The state where the claw 32b and the square hole 43 of the auxiliary locking part 36 are locked at two points is maintained. Therefore, it is possible to prevent the quick connector from being mistakenly identified as being in the complete coupling position by being pulled out of the coupling confirmation member 18 even though the quick connector is actually in an incomplete coupling state.

本発明の一実施形態によるクイックコネクタを示す分解斜視図。The disassembled perspective view which shows the quick connector by one Embodiment of this invention. 同クイックコネクタの一部断面側面図。The partial cross section side view of the quick connector. チューブが完全結合位置まで挿入されたときの結合確認部材の動作を示す断面図。Sectional drawing which shows operation | movement of the coupling confirmation member when a tube is inserted to a complete coupling position. チューブが不完全結合位置にあるときの結合確認部材の動作を示す断面図。Sectional drawing which shows operation | movement of the coupling confirmation member when a tube exists in an incomplete coupling position. チューブが不完全結合位置にあるときに、斜めに引っ張らせたときの結合確認部材の動作を示す説明図。Explanatory drawing which shows operation | movement of the connection confirmation member when it is made to pull diagonally, when a tube exists in an incomplete connection position. 本発明の他の実施形態によるクイックコネクタを示す分解斜視図。The disassembled perspective view which shows the quick connector by other embodiment of this invention. 本発明のさらに他の実施形態によるクイックコネクタを示す分解斜視図。The disassembled perspective view which shows the quick connector by other embodiment of this invention. 従来のクイックコネクタの縦断面図。The longitudinal cross-sectional view of the conventional quick connector. 従来の結合確認部材をもつクイックコネクタの横断面図。The cross-sectional view of the quick connector which has the conventional connection confirmation member. 図８の結合確認部材を斜めに引っ張ったときの結合確認部材の動作を説明する図。The figure explaining operation | movement of the connection confirmation member when the connection confirmation member of FIG. 8 is pulled diagonally.

符号の説明Explanation of symbols

１２ ハウジング
１４ チューブ
１５ スプール部
１６ リテーナ
１８ 結合確認部材
２０ クイックコネクタ
３０ａ、３０ｂ 脚部
３１ａ、３１ｂ 爪
３２ タブ部
３３ 弱め部
３６ 補助係止部
３７ａ、３７ｂ 突起
３８ 被係止片 12 Housing 14 Tube 15 Spool part 16 Retainer 18 Connection confirmation member 20 Quick connector 30a, 30b Leg part 31a, 31b Claw 32 Tab part 33 Weak part 36 Auxiliary locking part 37a, 37b Protrusion 38 Locked piece

Claims (3)

スプール部を有する相手方のチューブの端末が挿入されるハウジングと、前記スプール部をロック爪で拘束し前記相手方チューブと前記ハウジングとを結合するリテーナと、前記スプール部と前記リテーナとが完全に結合する位置まで前記チューブが十分に挿入されたときに、前記スプール部により爪が押し出されて引掛穴から外れ、引き抜けるようになる結合確認部材を有するクイックコネクタにおいて、
前記ハウジングの側面の２カ所に開口する引掛穴にそれぞれ係合する爪と前記ハウジングの一部に係合し前記ハウジングの円周方向への当該結合確認部材の動きを規制する補助係止部を前記結合確認部材に設け、前記結合確認部材が前記ハウジングの円周方向に斜めに引っ張られたときに、少なくとも一方の爪と前記補助係止部の２点で当該結合確認部材が前記ハウジングに係止されるようにし、前記結合確認部材の補助係止部は、ハウジングのチューブ挿入口の縁部からハウジング軸方向に突き出た被係止片の両側を挟むように係止する突起を有することを特徴とするクイックコネクタ。 A housing into which the end of the other tube having the spool portion is inserted, a retainer that restrains the spool portion with a lock claw and couples the opposite tube and the housing, and the spool portion and the retainer are completely coupled. In the quick connector having a coupling confirmation member that, when the tube is sufficiently inserted up to a position, the claw is pushed out by the spool portion to be detached from the catch hole and pulled out,
A claw that engages with hook holes that are opened at two locations on the side surface of the housing, and an auxiliary locking portion that engages with a part of the housing and restricts the movement of the coupling confirmation member in the circumferential direction of the housing. provided in the coupling confirmation member, engages when the coupling confirmation member is pulled obliquely in the circumferential direction of the housing, to the binding Acknowledgment member said housing at two points with at least one claw said auxiliary locking portion The auxiliary locking portion of the coupling confirmation member has a protrusion for locking so as to sandwich both sides of the locked piece protruding in the housing axial direction from the edge of the tube insertion port of the housing. Features quick connector. スプール部を有する相手方のチューブの端末が挿入されるハウジングと、前記スプール部をロック爪で拘束し前記相手方チューブと前記ハウジングとを結合するリテーナと、前記スプール部と前記リテーナとが完全に結合する位置まで前記チューブが十分に挿入されたときに、前記スプール部により爪が押し出されて引掛穴から外れ、引き抜けるようになる結合確認部材を有するクイックコネクタにおいて、
前記ハウジングの側面の２カ所に開口する引掛穴にそれぞれ係合する爪と前記ハウジングの一部に係合し前記ハウジングの円周方向への当該結合確認部材の動きを規制する補助係止部前記結合確認部材が前記ハウジングの円周方向に斜めに引っ張られたときに、少なくとも一方の爪と前記補助係止部の２点で当該結合確認部材が前記ハウジングに係止されるようにし、前記結合確認部材の補助係止部は、ハウジングのチューブ挿入口の縁部からハウジング軸方向に突き出た被係止片に形成した切欠部に嵌合する突起を有することを特徴とするクイックコネクタ。 A housing into which the end of the other tube having the spool portion is inserted, a retainer that restrains the spool portion with a lock claw and couples the opposite tube and the housing, and the spool portion and the retainer are completely coupled. In the quick connector having a coupling confirmation member that, when the tube is sufficiently inserted up to a position, the claw is pushed out by the spool portion to be detached from the catch hole and pulled out,
A claw that engages with hook holes that are opened at two locations on the side surface of the housing, and an auxiliary locking portion that engages with a part of the housing and restricts the movement of the coupling confirmation member in the circumferential direction of the housing. When the coupling confirmation member is pulled obliquely in the circumferential direction of the housing, the coupling confirmation member is locked to the housing at two points of at least one claw and the auxiliary locking portion, and the coupling A quick connector, wherein the auxiliary locking portion of the confirmation member has a protrusion that fits into a notch formed in a locked piece protruding in an axial direction of the housing from the edge of the tube insertion port of the housing . 前記結合確認部材は、前記爪を有するＵ字形の脚部と、前記脚部と一体に連結され引き抜くときに指をかけるためのタブ部と、一定以上の力が加わると破損する弱め部とを具備することを特徴とする請求項１または２に記載のクイックコネクタ。 The coupling confirmation member includes a U-shaped leg portion having the claw, a tab portion that is integrally connected to the leg portion and for placing a finger when pulled out, and a weakened portion that is damaged when a certain force is applied. The quick connector according to claim 1, wherein the quick connector is provided.
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US11873931B2 (en) 2021-02-12 2024-01-16 A. Raymond Et Cie Quick connector with verification and assembly check

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JP5687152B2 (en) 2011-08-01 2015-03-18 三桜工業株式会社 Piping joint
KR101478923B1 (en) * 2013-11-14 2014-12-31 엘에스엠트론 주식회사 Quick Connector

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JP3491798B2 (en) * 1996-11-08 2004-01-26 東海ゴム工業株式会社 connector
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JP2000104878A (en) * 1998-09-25 2000-04-11 Togo Seisakusho Corp Connector for connecting piping
JP4330415B2 (en) * 2003-10-01 2009-09-16 株式会社東郷製作所 Pipe fitting
WO2007066675A1 (en) * 2005-12-06 2007-06-14 Tokai Rubber Industries, Ltd. Quick connector and checker

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* Cited by examiner, † Cited by third party
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US11873931B2 (en) 2021-02-12 2024-01-16 A. Raymond Et Cie Quick connector with verification and assembly check

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