JP2006266473A

JP2006266473A - Quick connector

Info

Publication number: JP2006266473A
Application number: JP2005089539A
Authority: JP
Inventors: Hiroyoshi Mori; 浩芳森; Motohide Nishimura; 元秀西村; Tetsuya Shoji; 哲哉荘司
Original assignee: Sumitomo Riko Co Ltd
Current assignee: Sumitomo Riko Co Ltd
Priority date: 2005-03-25
Filing date: 2005-03-25
Publication date: 2006-10-05
Anticipated expiration: 2025-03-25
Also published as: JP4529133B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a quick connector having novel construction using a wire retainer for strongly preventing the come-off of a pipe body. <P>SOLUTION: The quick connector 1 comprises a connector housing 3 and the wire retainer 5. An engaging slit is provided in a retainer mounting portion 15 of the connector housing 3. The wire retainer 5 is mounted on the retainer mounting portion 15 so that an engaging arm 59 enters into the engaging slit 23 and protrudes into the retainer mounting portion 15. A protruding portion 68 is provided protruding on one axial side of each engaging arm 59, and its front end 84 engages with an annular face 82 on the other axial side of an annular engaging boss portion 49 at the inside of its outer peripheral edge. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、例えば自動車配管の連結に用いられるクイックコネクタに関する。 The present invention relates to a quick connector used for connecting automobile piping, for example.

パイプ体とホースとを連結することにより構成される流体配管構造には、パイプ体及びホースの連結用のコネクタが用いられる。このようなコネクタは、軸方向一方側に、ホースが接続される接続部が形成された筒状のコネクタハウジングを有していて、パイプ体とコネクタとの接続は、例えば、パイプ体の挿入側外周面に環状係合突部を形成して挿入端部を構成し、かつ、コネクタハウジングの軸方向他方側にスナップ係合用のリテーナー手段を設けてコネクタをクイック接続形式のものとしておき、パイプ体の挿入端部を軸方向他方側端開口からコネクタハウジング内に挿入して、リテーナー手段と環状係合突部とをスナップ係合させ、パイプ体とコネクタとを抜け止め状態とすることにより行われる。クイック接続形式のクイックコネクタに使用されるリテーナー手段としては、コネクタハウジングの軸方向他方側に、径方向に対向して一対の係合スリットを設けるとともに、一対の係合アームを有するコ字状又はほぼコ字状のワイヤリテーナー（例えば線材製のリテーナー）を用い、この一対の係合アームが、係合スリットに入り込んでコネクタハウジングを挟み込むように、ワイヤリテーナーを、コネクタハウジングの軸方向他方側又は軸方向他方側外周に取り付けるといったものが知られている（例えば特許文献１参照）。このようなリテーナー手段を採用することにより、コネクタが比較的大径であっても、リテーナーのコネクタハウジングへの十分な取り付け安定性を確保することができる。 A connector for connecting a pipe body and a hose is used for a fluid piping structure configured by connecting a pipe body and a hose. Such a connector has a cylindrical connector housing in which a connecting portion to which a hose is connected is formed on one side in the axial direction, and the connection between the pipe body and the connector is, for example, the insertion side of the pipe body An annular engagement projection is formed on the outer peripheral surface to form an insertion end, and a retainer means for snap engagement is provided on the other axial side of the connector housing to place the connector in a quick connection type, and a pipe body Is inserted into the connector housing from the opening on the other side end in the axial direction, and the retainer means and the annular engagement projection are snap-engaged to keep the pipe body and the connector from coming off. . As a retainer means used for the quick connection type quick connector, a pair of engagement slits are provided on the other side in the axial direction of the connector housing so as to be opposed to each other in the radial direction, and a U shape having a pair of engagement arms or Using a substantially U-shaped wire retainer (for example, a wire retainer), connect the wire retainer to the other side in the axial direction of the connector housing so that the pair of engagement arms enter the engagement slit and sandwich the connector housing. Attaching to the outer periphery on the other side in the axial direction is known (see, for example, Patent Document 1). By adopting such a retainer means, even when the connector has a relatively large diameter, it is possible to ensure sufficient attachment stability of the retainer to the connector housing.

特開２００３−２１２８７号公報JP 2003-21287 A

ところで、パイプ体がワイヤリテーナーにより強固に抜け止めされるためには、ワイヤリテーナーの係合アームが、コネクタハウジング内に十分突出し、パイプ体の環状係合突部と長い範囲にわたって係合することが必要であると考えられている。しかしながら、係合アームを環状係合突部と長い範囲にわたって係合させておいても、使用環境によっては、パイプ体とワイヤリテーナーとの係合が解除されてパイプ体がコネクタから相対的に外れた状態となってしまうことがある。 By the way, in order for the pipe body to be firmly retained by the wire retainer, the engagement arm of the wire retainer sufficiently protrudes into the connector housing and engages with the annular engagement protrusion of the pipe body over a long range. It is considered necessary. However, even if the engagement arm is engaged with the annular engagement protrusion over a long range, depending on the use environment, the engagement between the pipe body and the wire retainer is released and the pipe body is relatively disengaged from the connector. It may be in a state of being stuck.

そこで、本発明は、パイプ体がワイヤリテーナーにより強固に抜け止めされる新規な構造を備えたクイックコネクタの提供を目的とする。 Therefore, an object of the present invention is to provide a quick connector having a novel structure in which a pipe body is firmly retained by a wire retainer.

この目的を達成するための本発明のクイックコネクタは、軸方向一方側に、ホースと接続される接続部が形成され、軸方向他方側に、径方向に対向して一対の係合スリットが形成された筒状のコネクタハウジングと、一対の係合アームを有し、この一対の係合アームが、前記係合スリットに入り込んで前記コネクタハウジングを挟み込むことにより、前記コネクタハウジングの軸方向他方側に取り付けられたコ字状又はほぼコ字状のワイヤリテーナーと、を備え、前記ワイヤリテーナーの前記係合アームが、前記係合スリットから前記コネクタハウジング内に突出し、パイプ体の挿入端部が挿入されたときに、この挿入端部に形成されている環状係合突部の軸方向他方側環状面とスナップ係合するように構成されているクイックコネクタであって、前記係合アームは、前記軸方向他方側環状面の外周縁と非接触状態（非係合状態）で、前記環状係合突部の前記軸方向他方側環状面と係合するように形成されているものである。係合アーム（多くの場合、断面円形）が環状係合突部の軸方向他方側環状面の外周縁と接触又は係合していると、パイプ体が引き抜き方向に相対的に引っ張られたときに、係合アームが軸方向他方側環状面の外周縁上を滑って径方向外側に開いてしまうおそれがある。したがってここでは、係合アームが、軸方向他方側環状面の外周縁以外の個所でのみ、環状係合突部の軸方向他方側環状面と接触又は係合するように形成する。あるいは、係合アームが、軸方向他方側環状面の外周縁よりも内側でのみ、環状係合突部の軸方向他方側環状面と接触又は係合するように形成する。 In order to achieve this object, the quick connector of the present invention has a connecting portion connected to a hose formed on one side in the axial direction, and a pair of engaging slits formed on the other side in the axial direction so as to face each other in the radial direction. A cylindrical connector housing and a pair of engagement arms, and the pair of engagement arms enter the engagement slit and sandwich the connector housing, thereby moving the connector housing to the other side in the axial direction. An attached U-shaped or substantially U-shaped wire retainer, and the engagement arm of the wire retainer projects into the connector housing from the engagement slit, and the insertion end of the pipe body is inserted. A quick connector configured to snap-engage with the other annular surface in the axial direction of the annular engagement protrusion formed at the insertion end when The engaging arm engages with the axially other annular surface of the annular engaging protrusion in a non-contact state (non-engaged state) with the outer peripheral edge of the axially other annular surface. Is formed. When the engagement arm (often circular in cross section) is in contact with or engaged with the outer peripheral edge of the other annular surface in the axial direction of the annular engagement protrusion, the pipe body is pulled relatively in the pulling direction. In addition, the engaging arm may slide on the outer peripheral edge of the other annular surface in the axial direction and open radially outward. Therefore, here, the engaging arm is formed so as to contact or engage with the axially other side annular surface of the annular engaging protrusion only at a place other than the outer peripheral edge of the axially other side annular surface. Alternatively, the engagement arm is formed so as to contact or engage with the axially other side annular surface of the annular engagement protrusion only inside the outer peripheral edge of the axially other side annular surface.

係合アームを、軸方向他方側環状面の外周縁と非接触状態で、環状係合突部の軸方向他方側環状面と係合させるためには、例えば、係合アームに軸方向一方側への突出部を形成しておき、この突出部の軸方向一端部（先端部）が、軸方向他方側環状面の外周縁よりも内側で、環状係合突部の軸方向他方側環状面と接触して係合するように構成すればよい。 In order to engage the engagement arm with the outer circumferential edge of the other annular surface in the axial direction in a non-contact state with the other annular surface in the axial direction of the annular engagement protrusion, for example, A projecting portion is formed, and one end portion (tip portion) in the axial direction of the projecting portion is inside the outer peripheral edge of the other annular surface in the axial direction, and the other annular surface in the axial direction of the annular engaging projection. What is necessary is just to comprise so that it may contact and engage with.

本発明のクイックコネクタはまた、軸方向一方側に、ホースと接続される接続部が形成され、軸方向他方側に、径方向に対向して一対の係合スリットが形成された筒状のコネクタハウジングと、一対の係合アームを有し、この一対の係合アームが、前記係合スリットに入り込んで前記コネクタハウジングを挟み込むことにより、前記コネクタハウジングの軸方向他方側に取り付けられたコ字状又はほぼコ字状のワイヤリテーナーと、を備え、前記ワイヤリテーナーの前記係合アームが、前記係合スリットから前記コネクタハウジング内に突出し、パイプ体の挿入端部が挿入されたときに、この挿入端部に形成されている環状係合突部の軸方向他方側環状面とスナップ係合するように構成されているクイックコネクタであって、前記係合アームは、前記パイプ体の前記挿入端部外周と接触状態（接触直前の状態を含む）で前記環状係合突部の前記軸方向他方側環状面と係合し、かつ、前記挿入端部外周との接触部分（接触直前部分）のみが前記環状係合突部の前記軸方向他方側環状面と係合するものとして構成できる。あるいは、挿入端部外周との接触部分個所（接触直前部分個所）でのみ軸方向他方側環状面と係合する。ワイヤリテーナーの一対の係合アームは通常、パイプ体の挿入端部外周（環状係合突部以外の部分）を挟んだ状態（例えば挟み付けた状態）で、環状係合突部の軸方向他方側環状面と係合する。そこで、係合アームが、パイプ体の挿入端部外周との接触部分個所でのみ環状係合突部の軸方向他方側環状面と係合するものとしておけば、係合アームが、軸方向他方側環状面の外周縁と接触又は係合してしまうことを効果的に防止できる。ここでは、環状係合突部の軸方向他方側環状面は、例えば、係合アームの径よりも広い幅を有している。 The quick connector of the present invention is also a cylindrical connector in which a connecting portion to be connected to the hose is formed on one side in the axial direction, and a pair of engagement slits are formed on the other side in the axial direction so as to face in the radial direction. A U-shape having a housing and a pair of engagement arms, the pair of engagement arms being attached to the other axial side of the connector housing by entering the engagement slit and sandwiching the connector housing Or an approximately U-shaped wire retainer, and the engagement arm of the wire retainer protrudes from the engagement slit into the connector housing and is inserted when the insertion end of the pipe body is inserted. A quick connector configured to snap-engage with an annular surface on the other side in the axial direction of an annular engagement protrusion formed at an end, wherein the engagement arm Engaging the outer circumferential surface of the annular engagement projection with the other annular surface in the axial direction in contact with the outer periphery of the insertion end of the pipe body (including the state immediately before contact). Only the contact portion (the portion immediately before contact) can be configured to engage with the other annular surface in the axial direction of the annular engagement protrusion. Alternatively, it engages with the other annular surface in the axial direction only at the contact portion with the outer periphery of the insertion end portion (the portion immediately before contact). The pair of engagement arms of the wire retainer is usually in a state in which the outer periphery of the insertion end of the pipe body (a portion other than the annular engagement projection) is sandwiched (for example, in a sandwiched state), and the other of the annular engagement projections in the axial direction. Engages with side annular surface. Therefore, if the engagement arm is engaged with the other annular surface in the axial direction of the annular engagement protrusion only at the contact portion with the outer periphery of the insertion end of the pipe body, the engagement arm is in the other axial direction. It can prevent effectively contacting or engaging with the outer periphery of a side annular surface. Here, the axially other side annular surface of the annular engagement protrusion has a width wider than the diameter of the engagement arm, for example.

以上説明したように、本発明のクイックコネクタでは、ワイヤリテーナーの係合アームとパイプ体の環状係合突部とを強固に係合させることができる。 As described above, in the quick connector of the present invention, the engagement arm of the wire retainer and the annular engagement protrusion of the pipe body can be firmly engaged.

以下、本発明の実施の形態を図面を参照して説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は本発明に係るクイックコネクタの斜視図、図２はクイックコネクタの断面図、図３はクイックコネクタの別の断面図、図４はクイックコネクタの分解斜視図、図５はクイックコネクタの組み立て図である。 1 is a perspective view of a quick connector according to the present invention, FIG. 2 is a sectional view of the quick connector, FIG. 3 is another sectional view of the quick connector, FIG. 4 is an exploded perspective view of the quick connector, and FIG. FIG.

クイックコネクタ１は、例えば自動車の給排気配管の連結に使用されるものであり、特に図１乃至図３からよく理解できるように、筒状薄肉のコネクタハウジング３と、このコネクタハウジング３に取り付けられたコ字状又はほぼコ字状のワイヤリテーナー５と、を備えて構成されている。コネクタハウジング３は例えば金属製であり、軸方向一方側の円筒状のホース接続部７（接続部）と、軸方向他方側のほぼ円筒状のパイプ挿入部９とから一体的に構成されていて、大径のホースと大径のパイプ体とを連結するために、大径に、かつ、比較的短く形成されている。 The quick connector 1 is used, for example, for connection of an air supply / exhaust pipe of an automobile. As can be understood particularly from FIGS. 1 to 3, the quick connector 1 is attached to the thin connector housing 3 and the connector housing 3. And a U-shaped or substantially U-shaped wire retainer 5. The connector housing 3 is made of, for example, metal, and is integrally configured from a cylindrical hose connection portion 7 (connection portion) on one axial side and a substantially cylindrical pipe insertion portion 9 on the other axial side. In order to connect the large diameter hose and the large diameter pipe body, the large diameter hose is formed relatively short.

ホース接続部７は、円筒状の接続部本体１１と、この接続部本体１１の軸方向一端部に一体的に形成された抜け止め部１３と、から構成され、抜け止め部１３は、軸方向一端から軸方向他方側に向かってテーパ状に拡径して、接続部本体１１よりも径方向外側に突出するように屈曲形成されている。抜け止め部１３の軸方向一端は、例えば接続部本体１１よりも小径に形成される。 The hose connection portion 7 is composed of a cylindrical connection portion main body 11 and a retaining portion 13 that is integrally formed at one end of the connecting portion main body 11 in the axial direction. The diameter is increased in a tapered shape from one end toward the other side in the axial direction, and is bent so as to protrude outward in the radial direction from the connection portion main body 11. One end in the axial direction of the retaining portion 13 is formed to have a smaller diameter than the connecting portion main body 11, for example.

パイプ挿入部９は、軸方向他方側のリテーナー取り付け部１５と、ホース接続部７が接続形成された軸方向一方側のパイプ支持部１７と、リテーナー取り付け部１５及びパイプ支持部１７の間に形成された軸方向中間のシール保持部１９と、から構成されていて、パイプ支持部１７は、シール保持部１９よりも小径で、ホース接続部７の接続部本体１１よりも大径に形成されている。 The pipe insertion portion 9 is formed between the retainer mounting portion 15 on the other side in the axial direction, the pipe support portion 17 on the one side in the axial direction to which the hose connection portion 7 is connected, and the retainer mounting portion 15 and the pipe support portion 17. The pipe support portion 17 is smaller in diameter than the seal holding portion 19 and larger in diameter than the connecting portion main body 11 of the hose connecting portion 7. Yes.

パイプ挿入部９の環状のリテーナー取り付け部１５は、シール保持部１９と同一径に、より具体的にはシール保持部１９の軸方向他方側と同一径に形成され、径方向対称位置に、薄肉円筒壁状の径方向外側壁部を有する取り付け用突出部２１、２１が設けられた構造を備えていて、一対の取り付け用突出部２１、２１のそれぞれは、ほぼ４分の１の円弧長さにわたって形成されている。ただし、取り付け用突出部２１は全周にわたって形成される場合もある。それぞれの取り付け用突出部２１の径方向外側壁部には、係合スリット２３が形成されているが、この係合スリット２３は、周方向一方側に形成された一方側スリット部２５と、周方向他方側に形成された、一方側スリット部２５に等しいあるいは対称である形状の他方側スリット部２７と、から構成されていて、一方側スリット部２５及び他方側スリット部２７は、一方側スリット部２５と他方側スリット部２７との間に、係合スリット２３の幅とほぼ等しい、又は係合スリット２３の幅よりも多少長い（例えばほぼ２倍長い）周方向幅を有する部分２９（分断部）が残るように形成されている。すなわち、係合スリット２３は、例えば周方向中央に位置する分断部２９によって、一方側スリット部２５と他方側スリット部２７とに区分されている。また、取り付け用突出部２１の幅（軸方向幅）は、係合スリット２３の幅（軸方向幅）のほぼ３倍あるいは３倍乃至４倍に設定されている。そして、具体的には、係合スリット２３の幅は２．６ｍｍ乃至２．８ｍｍに設定されている（場合によっては３．３ｍｍとなることもある）。 The annular retainer mounting portion 15 of the pipe insertion portion 9 is formed to have the same diameter as the seal holding portion 19, more specifically, to the same diameter as the other side in the axial direction of the seal holding portion 19. It has a structure provided with mounting projections 21, 21 having a cylindrical wall-shaped radially outer wall, and each of the pair of mounting projections 21, 21 has a substantially arc length of a quarter. Is formed over. However, the mounting protrusion 21 may be formed over the entire circumference. Engagement slits 23 are formed on the radially outer wall portions of the respective mounting projections 21. The engagement slits 23 are connected to one side slit portion 25 formed on one side in the circumferential direction and the circumferential slit. The other side slit portion 27 is formed on the other side in the direction and has a shape equal to or symmetrical to the one side slit portion 25, and the one side slit portion 25 and the other side slit portion 27 are the one side slit. Between the portion 25 and the other side slit portion 27, a portion 29 having a circumferential width substantially equal to the width of the engagement slit 23 or slightly longer than the width of the engagement slit 23 (for example, almost twice as long) Part) is left. That is, the engagement slit 23 is divided into the one-side slit portion 25 and the other-side slit portion 27 by, for example, a dividing portion 29 located at the circumferential center. In addition, the width (axial width) of the mounting protrusion 21 is set to approximately three times or three to four times the width (axial width) of the engagement slit 23. Specifically, the width of the engagement slit 23 is set to 2.6 mm to 2.8 mm (in some cases, it may be 3.3 mm).

取り付け用突出部２１の周方向一端壁部３１及び周方向他端壁部３３は、分断部２９同士を結んで軸心を通過する直線及び軸線と平行に広がるように、すなわちワイヤリテーナー５の取り付け方向と直交する方向に広がるように形成されている。また、取り付け用突出部２１の周方向一端壁部３１と一方側スリット部２５の周方向一端との間、および、取り付け用突出部２１の周方向他端壁部３３と他方側スリット部２７の周方向他端との間にはそれぞれ、係合スリット２３の幅のほぼ２倍の周方向間隔が設けられていて、取り付け用突出部２１の周方向一端部及び周方向他端部には、係合スリット２３の幅のほぼ２倍の周方向長さあるいは周方向幅を有する抜け止め壁部個所３５、３７が形成されている。 The circumferential one end wall portion 31 and the circumferential other end wall portion 33 of the mounting protrusion 21 are connected to the dividing portions 29 so as to spread in parallel with the straight line passing through the axial center and the axis, that is, mounting the wire retainer 5. It is formed so as to spread in a direction orthogonal to the direction. Moreover, between the circumferential direction one end wall part 31 of the protrusion part 21 for attachment, and the circumferential direction one end of the one side slit part 25, and between the circumferential direction other end wall part 33 and the other side slit part 27 of the protrusion part 21 for attachment A circumferential interval approximately twice the width of the engagement slit 23 is provided between the other end in the circumferential direction, and one end in the circumferential direction and the other end in the circumferential direction of the mounting projection 21 are Retaining wall portions 35 and 37 having a circumferential length or a circumferential width approximately twice the width of the engagement slit 23 are formed.

取り付け用突出部２１では、一方側スリット部２５の周方向一端部に軸方向一方側に短く延びるスリット状の一方側出入り口３８が形成され、また、他方側スリット部２７の周方向他端部にも軸方向一方側に短く延びるスリット状の他方側出入り口３９が形成されている。 In the mounting projection 21, a slit-like one-side entrance / exit 38 extending short in one axial direction is formed at one circumferential end of the one-side slit 25, and at the other circumferential end of the other-side slit 27. Also, a slit-like other side entrance 39 that is shortly extended on one side in the axial direction is formed.

なお、コネクタハウジング３のリテーナー取り付け部１５は、径方向反対側からでも、ワイヤリテーナー５を同様に取り付けることができるような対称形状に形成されている。 In addition, the retainer attaching part 15 of the connector housing 3 is formed in the symmetrical shape which can attach the wire retainer 5 similarly from the radial direction opposite side.

リテーナー取り付け部１５の軸方向他端（パイプ挿入部９又はコネクタハウジング３の軸方向他端）には、径方向外側に突出する外向きフランジ４０が一体的に設けられているが、この外向きフランジ４０は、取り付け用突出部２１の軸方向他端と一体的に形成されている。外向きフランジ４０は、円形の外縁を有しているが、一対の取り付け用突出部２１、２１の間に対応する部分では、外側が切り取られたように形成されていて、この部分の外縁は直線状に設定されている。 The other end in the axial direction of the retainer mounting portion 15 (the other end in the axial direction of the pipe insertion portion 9 or the connector housing 3) is integrally provided with an outward flange 40 protruding outward in the radial direction. The flange 40 is formed integrally with the other axial end of the mounting projection 21. Although the outward flange 40 has a circular outer edge, the outer edge of this part is formed so as to be cut off at the corresponding part between the pair of mounting projections 21, 21. It is set in a straight line.

シール保持部１９の内周面には、軸方向一方側で、ゴム製のＯリング４１が嵌め込まれ、かつ、軸方向他方側で、環状体に形成されている例えば金属製のブッシュ４３が圧入により嵌め付けられていて、Ｏリング４１は、シール保持部１９の軸方向一端に形成された段差部分４４とブッシュ４３とに挟まれて軸方向に位置決めされている。シール保持部１９では、軸方向他方側は軸方向一方側よりも若干大径に形成されている。 A rubber O-ring 41 is fitted on the inner peripheral surface of the seal holding part 19 on one side in the axial direction, and a metal bush 43 formed on an annular body is press-fitted on the other side in the axial direction. The O-ring 41 is sandwiched between a stepped portion 44 formed at one end in the axial direction of the seal holding portion 19 and the bush 43 and is positioned in the axial direction. In the seal holding portion 19, the other axial side is formed with a slightly larger diameter than the one axial side.

クイックコネクタ１に用いられているブッシュ４３は、単純な環状のブッシュ本体４５の軸方向他方側に、パイプ体４７の環状係合突部４９（図６参照）を受け取るための受け取り部５１を一体的に有して形成されていて、受け取り部５１の内周面は、環状係合突部４９の軸方向一方側のテーパ状環状面と対応するように、軸方向他方側に向かって拡径するテーパ状に形成されている。受け取り部５１の径方向対称位置には、軸方向他方側に多少突出する閉塞部分５３が一体的に形成されていて、それぞれの閉塞部分５３は、取り付け用突出部２１に対応する周方向長さを有している。閉塞部分５３は、受け取り部５１の内周面を延長するようにして形成された内面を有し、取り付け用突出部２１、２１内に入り込んで、取り付け用突出部２１、２１の内周面又は内面と接触するように、ブッシュ本体４５及び受け取り部５１よりも径方向外側に突出して形成されていて、取り付け用突出部２１、２１の内周面又は内面に対応した外面を有しているが、取り付け用突出部２１内に入り込む部分の周方向中央個所（中間の個所）はそれぞれ、切り取られて通過部５５を形成している。したがって、ブッシュ４３をコネクタハウジング３に嵌め付けると、一方側スリット部２５の一方側出入り口３８及び他方側スリット部２７の他方側出入り口３９が、取り付け用突出部２１、２１の内周面又は内面と接触状態となっている閉塞部分５３の外周面又は外周で、全体的に又は部分的に塞がれるように構成されている。なお、通過部５５は、ワイヤリテーナー５の取り付け方向で一方側に多少偏って形成されているが（図９を参照すると、通過部５５は上側に偏って形成されている）、取り付け方向に対称に形成してもよい。 The bush 43 used in the quick connector 1 is integrated with a receiving portion 51 for receiving an annular engagement protrusion 49 (see FIG. 6) of the pipe body 47 on the other axial side of a simple annular bush body 45. The inner peripheral surface of the receiving portion 51 is enlarged in diameter toward the other axial side so as to correspond to the tapered annular surface on the one axial side of the annular engaging projection 49. It is formed in a tapered shape. A closed portion 53 that protrudes somewhat toward the other side in the axial direction is integrally formed at a radially symmetric position of the receiving portion 51, and each closed portion 53 has a circumferential length corresponding to the mounting protruding portion 21. have. The closed portion 53 has an inner surface formed so as to extend the inner peripheral surface of the receiving portion 51, enters into the mounting protrusions 21, 21, and the inner peripheral surface of the mounting protrusions 21, 21 or Although it is formed to protrude radially outward from the bush main body 45 and the receiving portion 51 so as to be in contact with the inner surface, it has an outer surface corresponding to the inner peripheral surface or inner surface of the mounting protruding portions 21, 21. The central portion (intermediate portion) in the circumferential direction of the portion that enters the mounting protrusion 21 is cut off to form a passage portion 55. Therefore, when the bush 43 is fitted to the connector housing 3, the one-side entrance / exit 38 of the one-side slit portion 25 and the other-side entrance / exit 39 of the other-side slit portion 27 are connected to the inner peripheral surface or the inner surface of the mounting projections 21, 21. The outer peripheral surface or outer periphery of the closed portion 53 that is in contact is configured to be totally or partially closed. Although the passage portion 55 is formed to be slightly deviated to one side in the mounting direction of the wire retainer 5 (refer to FIG. 9, the passage portion 55 is formed to be deviated upward), but is symmetrical to the attachment direction. You may form in.

ワイヤリテーナー５は、連結部５７と、この連結部５７の両側（幅方向両側又は幅方向両端）からそれぞれ、互いに平行状態で直線状に延びる一対の長い係合アーム５９、５９と、を具備するように屈曲形成された例えば金属製の線材で構成され、連結部５７は、肩部６１、６１を両側に有し、この肩部６１、６１の間で、外側に膨出するコ字状の指掛け部６３を備えている。肩部６１はそれぞれ、係合アーム５９を開きやすくするための、係合アーム５９側の肩部本体６４と、指掛け部６３側のストッパ部６５と、から構成され、それぞれのストッパ部６５は、指掛け部６３の幅方向の端あるいは端部から真横外側、すなわち係合アーム５９の延びる方向又はワイヤリテーナー５の取り付け方向と直交して外側に向う方向を向くまで、円弧状に湾曲し、内側に凸となって延びるように形成されていて、肩部本体６４は、周方向一方側の抜け止め壁部個所３５と対応するように傾斜し、かつ、抜け止め壁部個所３５の周方向長さと同一又はほぼ同一の長さを有している。 The wire retainer 5 includes a connecting portion 57 and a pair of long engaging arms 59, 59 extending linearly in parallel with each other from both sides (both sides in the width direction or both ends in the width direction) of the connecting portion 57. The connecting portion 57 has shoulder portions 61, 61 on both sides, and a U-shape that bulges outward between the shoulder portions 61, 61. A finger hook 63 is provided. Each of the shoulder portions 61 includes a shoulder portion main body 64 on the engagement arm 59 side and a stopper portion 65 on the finger hanging portion 63 side for making the engagement arm 59 easy to open. Curved in an arc until the end or the end in the width direction of the finger-holding portion 63 is directed to the laterally outer side, that is, the direction in which the engagement arm 59 extends or the direction in which the wire retainer 5 is attached is directed outward. The shoulder main body 64 is formed so as to protrude and extend so as to correspond to the retaining wall portion 35 on one side in the circumferential direction, and the circumferential length of the retaining wall portion 35. They have the same or almost the same length.

一対の係合アーム５９、５９は、肩部６１又は肩部本体６４の先端（指掛け部６３と反対側端）から直線状に延びる長いアーム本体部６６と、このアーム本体部６６の先端（自由側端）に、内側に屈曲して一体的に形成された抜け止め係合部６７と、から構成されているが、ここでは、ワイヤリテーナー５の線材あるいは係合アーム５９又はアーム本体部６６の外径は２．３ｍｍに設定されている。係合アーム５９のアーム本体部６６の中央部分は、軸方向一方側に僅かに膨出して突出部６８を形成するように、湾曲して形成されている。また、係合アーム５９の抜け止め係合部６７は、取り付け用突出部２１の周方向他方側の抜け止め壁部個所３７と対応するように傾斜し、かつ、抜け止め壁部個所３７の周方向長さとほぼ同一の長さに形成された内側に屈曲している係合本体部６９と、この係合本体部６９の先端に、軸方向一方側に屈曲して一体的に形成された軸方向一方側（ほぼ軸方向一方側）に延びる軸方向部７１と、を備えていて、それぞれの抜け止め係合部６７、６７の係合本体部６９、６９が周方向他方側の抜け止め壁部個所３７、３７と、この抜け止め壁部個所３７、３７外面に沿って、あるいは沿うようにして接触し、係合するように形成されている。 The pair of engagement arms 59, 59 includes a long arm main body 66 extending linearly from the front end of the shoulder 61 or the shoulder main body 64 (the end opposite to the finger hanging portion 63), and the front end of the arm main body 66 (free The retaining member 67 is integrally formed by bending inwardly at the side end). Here, the wire rod of the wire retainer 5 or the engagement arm 59 or the arm main body 66 is formed. The outer diameter is set to 2.3 mm. A central portion of the arm main body 66 of the engaging arm 59 is formed to be curved so as to slightly bulge to one side in the axial direction to form a protrusion 68. Further, the retaining engagement portion 67 of the engaging arm 59 is inclined so as to correspond to the retaining wall portion 37 on the other circumferential side of the mounting projection 21, and the periphery of the retaining wall portion 37. An engagement main body 69 that is bent inward and formed to have a length substantially the same as the length in the direction, and a shaft that is integrally formed at the tip of the engagement main body 69 by bending in one axial direction. And an axial direction portion 71 extending to one side in the direction (substantially one axial direction), and the engagement body portions 69, 69 of the respective retaining engagement portions 67, 67 are on the other circumferential retaining wall. The portion 37, 37 is formed so as to come into contact with and engage with the retaining wall portion 37, 37 along or along the outer surface thereof.

アーム本体部６６の長さは、係合スリット２３とほぼ等しく、すなわち一方側スリット部２５の周方向一端及び他方側スリット部２７の周方向他端の間隔とほぼ等しく設定されている。アーム本体部６６、６６の間隔は、パイプ支持部１７の内径あるいはブッシュ４３のブッシュ本体４５の内径又はパイプ体４７の外径とほぼ等しくなるように設定されている。 The length of the arm main body 66 is substantially equal to that of the engagement slit 23, that is, substantially equal to the interval between the one end in the circumferential direction of the one-side slit portion 25 and the other end in the circumferential direction of the other-side slit portion 27. The interval between the arm main body portions 66 and 66 is set to be substantially equal to the inner diameter of the pipe support portion 17, the inner diameter of the bush main body 45 of the bush 43, or the outer diameter of the pipe body 47.

このような構成のクイックコネクタ１を組み立てるには、まず、コネクタハウジング３にワイヤリテーナー５を一方側スリット部２５側から取り付ける。ワイヤリテーナー５の取り付けは、抜け止め係合部６７の軸方向部７１を、一方側スリット部２５の一方側出入り口３８からコネクタハウジング３内に差し込み、他方側スリット部２７の他方側出入り口３９から外側に突出させる。そうすると、ワイヤリテーナー５は、それぞれの肩部６１、６１が取り付け用突出部２１、２１の周方向一方側の抜け止め壁部個所３５、３５と、この抜け止め壁部個所３５、３５外面に沿って当接し、それぞれの肩部本体６４、６４が取り付け用突出部２１、２１の周方向一方側の抜け止め壁部個所３５、３５と、この抜け止め壁部個所３５、３５外面に沿って、あるいは沿うようにして接触し、かつ、それぞれのストッパ部６５、６５が取り付け用突出部２１、２１の周方向一方側端壁部３１、３１と当接し、しかも、それぞれの抜け止め係合部６７、６７又は係合本体部６９、６９が取り付け用突出部２１、２１の周方向他方側の抜け止め壁部個所３７、３７と、この抜け止め壁部個所３７、３７外面に沿って、あるいは沿うようにして接触し、係合して、コネクタハウジング３のリテーナー取り付け部１５に取り付けられることとなる。なお、肩部本体６４を取り付け用突出部２１の周方向一方側の抜け止め壁部個所３５から浮き上がらせるように形成してもよい。軸方向部７１を、他方側スリット部２７の他方側出入り口３９から外側に突出させ、抜け止め係合部６７又は係合本体部６９を抜け止め壁部個所３７に係合させるには、軸方向部７１が他方側スリット部２７の周方向他方側端に近づいた時点で係合アーム５９の差し込みを中断し、係合アーム５９を、例えば軸方向部７１が他方側出入り口３９に位置するように、外側に弾性変形させてから係合アーム５９の差し込みを再開すればよい。そうすると、軸方向部７１は他方側スリット部２７から抜け、係合本体部６９も他方側スリット部２７から抜け出て、抜け止め壁部個所３７と引き抜き方向に係合する（引き抜き抵抗を作用させるように係合する）こととなる。このようにして、ワイヤリテーナー５は、ストッパ部６５、６５が取り付け用突出部２１、２１の周方向一方側端壁部３１、３１と差し込み方向に係合し（差し込み抵抗を作用させるように係合し）、抜け止め係合部６７、６７が取り付け用突出部２１、２１と引き抜き方向に係合した状態で、一対の係合アーム５９、５９によりリテーナー取り付け部１５を挟み込んでクイックコネクタ１に取り付けられることとなる。一対の係合アーム５９、５９は、係合スリット２３、２３からコネクタハウジング３内に突出部６８を突出させて入り込んでいる。また、アーム本体部６６の突出部６８の突出量は０．５ｍｍ乃至１．０ｍｍに設定されている。ここでは、ストッパ部６５、６５と取り付け用突出部２１、２１の周方向一方側端壁部３１、３１との当接により、ワイヤリテーナー５を、この取り付け位置で、さらに押し込んでも、一対の係合アーム５９、５９はパイプ体４７の環状係合突部４９を通過させるように開くことはない。 In order to assemble the quick connector 1 having such a configuration, first, the wire retainer 5 is attached to the connector housing 3 from the one side slit portion 25 side. The wire retainer 5 is attached by inserting the axial direction portion 71 of the retaining engagement portion 67 into the connector housing 3 from the one side entrance 38 of the one side slit portion 25 and outside from the other side entrance 39 of the other side slit portion 27. To protrude. Then, in the wire retainer 5, the respective shoulder portions 61, 61 are provided along the retaining wall portions 35, 35 on one side in the circumferential direction of the mounting projections 21, 21, and the retaining wall portions 35, 35 along the outer surface. The shoulder main bodies 64, 64 are in contact with the retaining wall portions 35, 35 on one side in the circumferential direction of the mounting projections 21, 21, and along the outer surfaces of the retaining wall portions 35, 35, Alternatively, the stopper portions 65 and 65 are in contact with each other, and the respective stopper portions 65 and 65 are in contact with the circumferential one side end wall portions 31 and 31 of the mounting projection portions 21 and 21, and the respective retaining engagement portions 67 are provided. , 67 or the engagement main body 69, 69 along or along the outer surface of the retaining wall 37, 37 on the other circumferential side of the mounting projections 21, 21 and the retaining wall 37, 37. Like Contact, engage, and be attached to the retainer attaching section 15 of the connector housing 3. The shoulder body 64 may be formed so as to be lifted from the retaining wall portion 35 on one side in the circumferential direction of the mounting projection 21. In order to project the axial portion 71 outward from the other side entrance / exit 39 of the other side slit portion 27 and engage the retaining engagement portion 67 or the engagement main body 69 with the retaining wall portion 37 in the axial direction When the portion 71 approaches the other end in the circumferential direction of the other slit portion 27, the insertion of the engagement arm 59 is interrupted, and the engagement arm 59, for example, the axial portion 71 is positioned at the other side entrance 39. The insertion of the engagement arm 59 may be resumed after elastically deforming outward. Then, the axial direction portion 71 comes out of the other side slit portion 27, and the engagement main body portion 69 also comes out of the other side slit portion 27 and engages with the retaining wall portion 37 in the pulling direction (acting pulling resistance). To engage). Thus, in the wire retainer 5, the stopper portions 65, 65 are engaged with the one end wall portions 31, 31 in the circumferential direction of the mounting projections 21, 21 in the insertion direction (so that the insertion resistance acts). In the state where the retaining engagement portions 67 and 67 are engaged with the mounting projections 21 and 21 in the pull-out direction, the retainer mounting portion 15 is sandwiched between the pair of engagement arms 59 and 59 to the quick connector 1. It will be attached. The pair of engaging arms 59 and 59 are inserted into the connector housing 3 with the protruding portions 68 protruding from the engaging slits 23 and 23. Further, the protruding amount of the protruding portion 68 of the arm main body 66 is set to 0.5 mm to 1.0 mm. Here, even if the wire retainer 5 is further pushed in at this attachment position by the contact between the stopper portions 65 and 65 and the one end wall portions 31 and 31 in the circumferential direction of the attachment projections 21 and 21, a pair of engagements is possible. The joint arms 59 and 59 are not opened so as to pass the annular engagement protrusion 49 of the pipe body 47.

一方側スリット部２５の周方向一端同士の間隔及び他方側スリット部２７の周方向他端同士の間隔は等しく、パイプ体４７の外径（環状係合突部４９以外の部分の外径）とほぼ等しくなるように設定されているので、ワイヤリテーナー５は、一対の係合アーム５９、５９が、より具体的には一対のアーム本体部６６、６６が広がることなく互いに平行に延びている状態で、突出部６８の中央部分をパイプ体４７外周に接触させて、リテーナー取り付け部１５に取り付けられる。 The distance between the one ends in the circumferential direction of the one-side slit portion 25 and the distance between the other ends in the circumferential direction of the other-side slit portion 27 are equal, and the outer diameter of the pipe body 47 (the outer diameter of the portion other than the annular engagement protrusion 49). Since the wire retainer 5 is set to be substantially equal, the pair of engaging arms 59 and 59, more specifically, the pair of arm main body portions 66 and 66 extend in parallel with each other without spreading. Thus, the central portion of the protrusion 68 is brought into contact with the outer periphery of the pipe body 47 and attached to the retainer attachment portion 15.

そして、図４に示されているように、軸方向部７１が他方側出入り口３９に入り込む直前まで、ワイヤリテーナー５を退避方向に移動させた状態で、ブッシュ４３をコネクタハウジング３内に押し込む。ワイヤリテーナー５のアーム本体部６６、６６の間隔、あるいは、コネクタハウジング３内に突出しているアーム本体部６６、６６部分の間隔は、ブッシュ４３の通過部５５、５５の間隔とほぼ等しいように、あるいは通過部５５、５５の間隔よりも多少大きくなるように広がっているので（ブッシュ本体４５の外縁にかぶさらないようにあるいはオーバーラップしないように広がっているので）、すなわち、係合アーム５９，５９又はアーム本体部６６、６６が、ブッシュ４３の通過を許容するように開いているので、あるいは、係合アーム５９，５９又はアーム本体部６６、６６が、ブッシュ４３の通過部５５、５５及びブッシュ本体４５の通過を許容するように開いているので、ブッシュ４３を、ワイヤリテーナー５を通過させて、シール保持部１９内に圧入することができる。ブッシュ４３の閉塞部５３は、例えば部分的に、一方側出入り口３８及び他方側出入り口３９を塞いでいるので、クイックコネクタ１では、ブッシュ４３をコネクタハウジング３から取り外さない限り、ワイヤリテーナー５がコネクタハウジング３から外れるといったことはない。 Then, as shown in FIG. 4, the bush 43 is pushed into the connector housing 3 with the wire retainer 5 moved in the retracting direction until just before the axial portion 71 enters the other side entrance 39. The interval between the arm body portions 66 and 66 of the wire retainer 5 or the interval between the arm body portions 66 and 66 protruding into the connector housing 3 is substantially equal to the interval between the passage portions 55 and 55 of the bush 43. Alternatively, since it extends so as to be slightly larger than the interval between the passage portions 55, 55 (because it extends so as not to cover the outer edge of the bush body 45 or overlap), that is, the engagement arm 59, 59 or the arm main body portions 66 and 66 are open so as to allow the passage of the bush 43, or the engaging arms 59 and 59 or the arm main body portions 66 and 66 are connected to the passage portions 55, 55 and 55 of the bush 43. Since the bush body 45 is opened to allow passage of the bush body 45, the bush 43 is passed through the wire retainer 5 to It can be pressed into the Le holding portion 19. Since the closing portion 53 of the bush 43 partially closes the one-side entrance / exit 38 and the other-side entrance / exit 39, for example, in the quick connector 1, the wire retainer 5 is connected to the connector housing unless the bush 43 is removed from the connector housing 3. There is no such thing as going out of 3.

図６はクイックコネクタ１にゴム製のホース及びパイプ体４７を接続した状態を示す軸方向に沿った断面図、図７はクイックコネクタ１にパイプ体４７を接続した状態を示す径方向に沿った断面図、図８は係合アーム５９の突出部６８と環状係合突部４９との係合状態を示す図である。 6 is a cross-sectional view along the axial direction showing a state in which a rubber hose and a pipe body 47 are connected to the quick connector 1, and FIG. 7 is along a radial direction showing a state in which the pipe body 47 is connected to the quick connector 1. FIG. 8 is a cross-sectional view and FIG. 8 is a view showing an engagement state between the protrusion 68 of the engagement arm 59 and the annular engagement protrusion 49.

ゴム製のホース７３は、先端又は軸方向他端が、パイプ支持部１７の軸方向一端に形成された段差部分７５に接近するように、ホース接続部７の外周に嵌め付けられ、かつ、締め付けバンド７７により接続部本体１１に締め付けられていて、十分な抜け止め状態でクイックコネクタ１に接続されている。なお、締め付けバンド７７はネジ式であるが、バネ式のものを用いることもできる。さらに、バンドにかえてリングをかしめてホース７３の抜け止めを行なうこともできる。 The rubber hose 73 is fitted on the outer periphery of the hose connection portion 7 so that the tip end or the other axial end approaches the stepped portion 75 formed at the one axial end of the pipe support portion 17 and is tightened. It is fastened to the connecting portion main body 11 by a band 77 and is connected to the quick connector 1 in a sufficiently secured state. The tightening band 77 is a screw type, but a spring type can also be used. Furthermore, the hose 73 can be prevented from coming off by caulking the ring instead of the band.

クイックコネクタ１にリテーナー取り付け部１５の軸方向他端開口７９から挿入されて嵌め付けられたパイプ体４７は、例えば金属製であり、軸方向一方側が、環状係合突部４９を外周面に有する挿入端部８１として構成された形式のものである。ここでは、環状係合突部４９の軸方向一方側環状面は軸方向他方側に向って拡径するテーパ状に形成されている。パイプ体４７は、環状係合突部４９の軸方向一方側環状面がワイヤリテーナー５のアーム本体部６６、６６の間隔を押し広げながら相対的に進行し（図７の係合アーム５９の仮想線表示参照、アーム本体部６６、６６が最も押し広げられたときでも、突出部６８、６８はコネクタハウジング３内に位置している）、ブッシュ４３の受け取り部５１内周面に当接して収容され、挿入端部８１が全長にわたってコネクタハウジング３のパイプ挿入部９内に挿入されるまで、クイックコネクタ１あるいはコネクタハウジング３に押し込まれている。環状係合突部４９の軸方向他方側環状面８２は、パイプ体４７の外周面から径方向又は軸直角方向に２．６ｍｍ乃至２．８ｍｍの幅で広がるように形成されているが、環状係合突部４９の軸方向一方側環状面がブッシュ４３の受け取り部５１内周面に当接したときには、係合スリット２３の軸方向一端８３と軸方向位置において一致又はほぼ一致しているので、あるいは係合スリット２３の軸方向一端８３よりも若干軸方向一方側に位置しているので、ワイヤリテーナー５のアーム本体部６６、６６は、パイプ体４７がコネクタハウジング３のパイプ挿入部９内に正常に挿入された状態となると、弾性復帰力によりスナップ的に平行状態に復帰し、パイプ体４７を抜け止めするように環状係合突部４９あるいは環状係合突部４９の軸方向他方側環状面８２とスナップ係合する（すなわち、軸方向他方側環状面８２はアーム本体部６６、６６とスナップ係合できるように位置することとなる）。アーム本体部６６の突出部６８の先端部８４は、パイプ体４７の挿入端部８１の外周と接触し、かつ、環状係合突部４９の軸方向他方側環状面８２と接触又は係合しているが、突出部６８の先端部８４の径方向外端（パイプ体４７の径方向における外端）は、軸方向他方側環状面８２の外周縁の内側に位置していて、先端部８４は、径方向外端よりも内側で、軸方向他方側環状面８２と接触している。係合スリット２３の幅は、アーム本体部６６の径よりも広く設定されているので（アーム本体部６６の径の１０％乃至２５％増）、アーム本体部６６のスナップ動作は鋭く、抜け止め係合部６７、６７は、コネクタハウジング３の抜け止め壁部個所３７に衝突し、アーム本体部６６の突出部６８、６８（より具体的には、突出部６８の先端部８４）は、パイプ体４７の外周と衝突して明確な衝突音を発生する。 The pipe body 47 inserted into and fitted into the quick connector 1 from the other end opening 79 in the axial direction of the retainer mounting portion 15 is made of, for example, metal, and one side in the axial direction has an annular engagement protrusion 49 on the outer peripheral surface. It is of the type configured as an insertion end 81. Here, the one-side annular surface in the axial direction of the annular engagement protrusion 49 is formed in a tapered shape whose diameter increases toward the other side in the axial direction. The pipe body 47 advances relatively while the annular surface on the one side in the axial direction of the annular engagement protrusion 49 pushes the gap between the arm main body portions 66 and 66 of the wire retainer 5 (the imaginary of the engagement arm 59 in FIG. 7). (Refer to the line display, even when the arm main body portions 66 and 66 are most expanded, the projecting portions 68 and 68 are located in the connector housing 3), and abut against the inner peripheral surface of the receiving portion 51 of the bush 43. Then, the insertion end 81 is pushed into the quick connector 1 or the connector housing 3 until it is inserted into the pipe insertion portion 9 of the connector housing 3 over the entire length. The other-side annular surface 82 in the axial direction of the annular engagement protrusion 49 is formed so as to extend from the outer peripheral surface of the pipe body 47 in a radial direction or a direction perpendicular to the axis with a width of 2.6 mm to 2.8 mm. When the one-side annular surface in the axial direction of the engaging protrusion 49 abuts on the inner peripheral surface of the receiving portion 51 of the bush 43, the axial end of the engaging slit 23 coincides or substantially coincides with the axial end. Alternatively, since the arm main body portions 66 and 66 of the wire retainer 5 are positioned slightly on the one axial side with respect to the axial end 83 of the engagement slit 23, the pipe body 47 is located inside the pipe insertion portion 9 of the connector housing 3. When it is inserted normally, the annular engagement protrusion 49 or the other of the annular engagement protrusions 49 in the axial direction is restored so as to snap back to the parallel state by the elastic return force and prevent the pipe body 47 from coming off. Annular surface 82 and snaps (i.e., the other axial side annular surface 82 is to be positioned so that it can snap engagement with the arm body 66, 66). The distal end portion 84 of the projecting portion 68 of the arm main body portion 66 is in contact with the outer periphery of the insertion end portion 81 of the pipe body 47 and is in contact with or engaged with the other axial surface 82 in the axial direction of the annular engagement protrusion 49. However, the radially outer end (the outer end in the radial direction of the pipe body 47) of the distal end portion 84 of the projecting portion 68 is located inside the outer peripheral edge of the other axial side annular surface 82, and the distal end portion 84. Is in contact with the other annular surface 82 in the axial direction on the inner side of the radially outer end. Since the width of the engagement slit 23 is set wider than the diameter of the arm main body 66 (10% to 25% increase in the diameter of the arm main body 66), the snap action of the arm main body 66 is sharp, and the retaining is prevented. The engaging portions 67 and 67 collide with the retaining wall portion 37 of the connector housing 3, and the protruding portions 68 and 68 of the arm main body portion 66 (more specifically, the distal end portion 84 of the protruding portion 68) It collides with the outer periphery of the body 47 and generates a clear collision sound.

パイプ体４７の挿入端部８１の軸方向一端は、Ｏリング４１を通過してパイプ支持部１７内に達していて、パイプ体４７あるいはパイプ体４７の挿入端部８１とクイックコネクタ１又はコネクタハウジング３との間はＯリング４１により密封され、また、パイプ体４１の挿入端部８１の環状係合突部４９よりも軸方向一方側は、パイプ支持部１７及びブッシュ４３により、径方向にガタが生じないように支持されている。なお、パイプ体４７の環状係合突部４９を係合アーム５９、５９あるいはアーム本体部６６、６６と確実にスナップ係合させるために、また、係合アーム５９又はアーム本体部６６のスナップ動作が環状係合突部４９との摺動により鈍くならないように、環状係合突部４９の軸方向一方側環状面がブッシュ４３に収容されたとき、すでに説明したように、環状係合突部４９の軸方向他方側環状面が、係合スリット２３の軸方向一端８３よりも若干軸方向一方側に位置することとなるように構成しておいてもよい。 One end in the axial direction of the insertion end 81 of the pipe body 47 passes through the O-ring 41 and reaches the inside of the pipe support portion 17, and the pipe body 47 or the insertion end 81 of the pipe body 47 and the quick connector 1 or connector housing. 3 is sealed by an O-ring 41, and one side in the axial direction of the annular engagement protrusion 49 of the insertion end 81 of the pipe body 41 is loosened in the radial direction by the pipe support 17 and the bush 43. It is supported so that it does not occur. The annular engagement protrusion 49 of the pipe body 47 is snap-engaged with the engagement arms 59 and 59 or the arm main body portions 66 and 66, and the snap operation of the engagement arm 59 or the arm main body portion 66 is performed. When the axially one side annular surface of the annular engagement protrusion 49 is accommodated in the bush 43 so that it does not become dull due to sliding with the annular engagement protrusion 49, as described above, the annular engagement protrusion The annular surface 49 on the other side in the axial direction 49 may be configured to be located slightly on the one side in the axial direction with respect to the axial end 83 of the engagement slit 23.

図９はクイックコネクタ１のワイヤリテーナー５の操作方法を説明するための図である。 FIG. 9 is a view for explaining a method of operating the wire retainer 5 of the quick connector 1.

パイプ体４７をクイックコネクタ１から外すときは、取り付け位置（図７に示す位置）に保持されているワイヤリテーナー５の指掛け部６３に、例えば指を掛けて、引っ張り力（退避力）を作用させる（図７の矢印Ａ参照）。そうすると、ワイヤリテーナー５は、それぞれの係合アーム５９の係合本体部６９を、取り付け用突出部２１の周方向他方側の抜け止め壁部個所３７外面上で他方側スリット部２７に向けてスライドさせながら、退避方向に移動し、係合アーム５９、５９が徐々に開いていく。そして、ワイヤリテーナー５を引っ張り続けると、アーム本体部６６が分断部２９に当接して強く押し付けられ、ワイヤリテーナー５をその位置（図９に示す退避位置）を越えて退避方向に移動させることができなくなるが、この状態（退避状態）では、係合アーム５９、５９は、パイプ体４７の環状係合突部４９が通過できる程度に開いている。ここでは、軸方向部７１は、取り付け用突出部２１の周方向他方側の抜け止め壁部個所３７外面から若干浮き上がるように形成されているが（より具体的には、軸方向部７１の屈曲開始端は抜け止め壁部個所３７外面と接触、係合及びスライドする場合がある）、軸方向部７１全体が抜け止め壁部個所３７外面上をスライドするように構成してもよい。 When the pipe body 47 is detached from the quick connector 1, for example, a finger is put on the finger-holding portion 63 of the wire retainer 5 held at the attachment position (position shown in FIG. 7) to apply a pulling force (retraction force). (See arrow A in FIG. 7). Then, the wire retainer 5 slides the engagement main body 69 of each engagement arm 59 toward the other slit portion 27 on the outer surface of the retaining wall portion 37 on the other circumferential side of the mounting projection 21. The engaging arms 59 and 59 gradually open while moving in the retracting direction. When the wire retainer 5 continues to be pulled, the arm main body portion 66 comes into contact with the dividing portion 29 and is strongly pressed, and the wire retainer 5 can be moved in the retracted direction beyond the position (the retracted position shown in FIG. 9). In this state (retracted state), the engagement arms 59 and 59 are open to the extent that the annular engagement protrusion 49 of the pipe body 47 can pass through. Here, the axial portion 71 is formed so as to be slightly lifted from the outer surface of the retaining wall portion 37 on the other circumferential side of the mounting projection 21 (more specifically, the bending of the axial portion 71). The starting end may contact, engage and slide with the outer surface of the retaining wall portion 37), and the entire axial portion 71 may slide on the outer surface of the retaining wall portion 37.

また、この退避状態では、抜け止め係合部６７の係合本体部６９の先端は、抜け止め壁部個所３７から外れて他方側スリット部２７内に落ち込みあるいは落ち込むような状態となっている。他方側出入り口３９は、ブッシュ４３の閉塞部分５３の外周面又は外面によって、例えば部分的に塞がれているので、軸方向部７１がコネクタハウジング３内に入り込んでしまうといったことはないが、軸方向部７１（軸方向部７１の屈曲開始端又は屈曲開始端側）は他方側スリット部２７の他方側出入り口３９の周方向他端又は他方側スリット部２７の周方向他端と取り付け方向に係合している（軸方向部７１は、例えば、先端に向かって外側に傾斜している）。したがって、ワイヤリテーナー５から退避力を解除しても、ワイヤリテーナー５は、退避状態に保持される。そして、退避状態のワイヤリテーナー５を取り付け位置に復帰させるためには、ワイヤリテーナー５を取り付け方向に強く押して、抜け止め係合部６７の軸方向部７１を他方側スリット部２７及び他方側出入り口３９又は他方側スリット部２７から抜け止め壁部個所３７外面上又は方向に押し出す。あるいは、軸方向部７１を外側に移動させ、抜け止め係合部６７の係合部本体６９の先端を他方側スリット部２７から抜け止め壁部個所３７外面上に押し出す。ワイヤリテーナー５は、係合アーム５９、５９の平行に戻ろうとする弾性復帰力により、スムーズに取り付け位置まで移動する。 Further, in this retracted state, the distal end of the engagement main body 69 of the retaining engagement portion 67 is in a state where it is detached from the retaining wall portion 37 and falls into the other side slit portion 27. The other side entrance / exit 39 is, for example, partially blocked by the outer peripheral surface or the outer surface of the closed portion 53 of the bush 43, so that the axial portion 71 does not enter the connector housing 3. The direction portion 71 (the bending start end or the bending start end side of the axial direction portion 71) is related to the other end in the circumferential direction of the other side entrance / exit 39 of the other side slit portion 27 or the other end in the circumferential direction of the other side slit portion 27 in the mounting direction. (Axial direction part 71 inclines outward toward the tip, for example). Therefore, even if the retracting force is released from the wire retainer 5, the wire retainer 5 is held in the retracted state. In order to return the retracted wire retainer 5 to the attachment position, the wire retainer 5 is strongly pressed in the attachment direction, and the axial direction portion 71 of the retaining engagement portion 67 is moved to the other side slit portion 27 and the other side entrance / exit 39. Alternatively, the retaining wall portion 37 is pushed out from the other side slit portion 27 on the outer surface or in the direction. Or the axial direction part 71 is moved outside and the front-end | tip of the engaging part main body 69 of the retaining engagement part 67 is pushed out from the other side slit part 27 on the outer surface of the retaining wall part 37. The wire retainer 5 moves smoothly to the attachment position by the elastic return force of the engagement arms 59, 59 trying to return in parallel.

図１０は係合アーム５９の突出部の別の構成を示す図である。 FIG. 10 is a view showing another configuration of the protruding portion of the engaging arm 59.

別の構成の突出部８５は、アーム本体部６６の中央部に軸方向他方側に突出する三角形状の突部８７、８７を２つ連続して形成し、突部８７、８７の接続部（突出部８５の先端部）８９を、アーム本体部６６のストレート部分よりも０．５ｍｍ乃至１．０ｍｍだけ軸方向一方側に突出させることにより構成されている。突部８７及び突出部８５の軸方向長さは、一方側出入り口部３８の軸方向長さとほぼ等しいので、係合アーム５９の一方側スリット２５内への差し込みは、突部８７及び突出部８５が一方側出入り口部３８を通過するようにして、スムーズに行われる。一対の係合アーム５９、５９は、係合スリット２３、２３からコネクタハウジング３内に突出部８５を突出させて入り込み、突出部８５の先端部８９は、パイプ体４７の挿入端部８１の外周に接触することとなる。アーム本体部６６は、突出部８５の先端部８９でのみ、環状係合突部４９の軸方向他方側環状面８２と接触又は係合しているが、突出部８５の先端部８９の径方向外端（パイプ体４７の径方向における外端）は、軸方向他方側環状面８２の外周縁の内側に位置している（より具体的には、先端部８９は、径方向外端よりも内側で、軸方向他方側環状面８２と接触している）。また、パイプ体４７の環状係合突部４９により、アーム本体部６６、６６が最も押し広げられたときでも、突部８７及び突出部８５はコネクタハウジング３内に位置している。 The projecting portion 85 having another configuration is formed by continuously forming two triangular projecting portions 87 and 87 projecting to the other side in the axial direction at the central portion of the arm main body portion 66, and connecting the projecting portions 87 and 87 ( The distal end portion 89 of the projecting portion 85 is configured to project from the straight portion of the arm main body portion 66 to one side in the axial direction by 0.5 mm to 1.0 mm. Since the axial lengths of the protrusion 87 and the protrusion 85 are substantially equal to the axial length of the one-side entrance / exit part 38, the insertion of the engagement arm 59 into the one-side slit 25 is performed by the protrusion 87 and the protrusion 85. Is smoothly performed by passing through the one-side entrance / exit part 38. The pair of engagement arms 59, 59 are inserted into the connector housing 3 by projecting the projection 85 from the engagement slits 23, 23, and the tip 89 of the projection 85 is the outer periphery of the insertion end 81 of the pipe body 47. Will come into contact. The arm main body 66 is in contact with or engaged with the other annular surface 82 in the axial direction of the annular engagement protrusion 49 only at the distal end 89 of the protrusion 85, but the radial direction of the distal end 89 of the protrusion 85 The outer end (the outer end in the radial direction of the pipe body 47) is located on the inner side of the outer peripheral edge of the other axial surface 82 in the axial direction (more specifically, the distal end portion 89 is more than the outer end in the radial direction). Inside, in contact with the other annular surface 82 in the axial direction). In addition, even when the arm main body portions 66 and 66 are most expanded by the annular engagement protrusion 49 of the pipe body 47, the protrusion 87 and the protrusion 85 are located in the connector housing 3.

本発明のクイックコネクタは、自動車配管等で超耐熱エアホースに適用されるなどしてパイプ体を強固に抜け止めすることとなる。 The quick connector of the present invention firmly prevents the pipe body from coming off by being applied to a super heat-resistant air hose in automobile piping or the like.

本発明に係るクイックコネクタの斜視図である。1 is a perspective view of a quick connector according to the present invention. クイックコネクタの断面図である。It is sectional drawing of a quick connector. クイックコネクタの別の断面図である。It is another sectional view of a quick connector. クイックコネクタの分解斜視図である。It is a disassembled perspective view of a quick connector. クイックコネクタの組み立て図である。It is an assembly drawing of a quick connector. クイックコネクタにゴム製のホース及びパイプ体を接続した状態を示す軸方向に沿った断面図である。It is sectional drawing along the axial direction which shows the state which connected the rubber-made hose and the pipe body to the quick connector. クイックコネクタにパイプ体を接続した状態を示す径方向に沿った断面図である。It is sectional drawing along the radial direction which shows the state which connected the pipe body to the quick connector. 係合アームの突出部と環状係合突部との係合状態を示す図である。It is a figure which shows the engagement state of the protrusion part of an engagement arm, and a cyclic | annular engagement protrusion. クイックコネクタのワイヤリテーナーの操作方法を説明するための図である。It is a figure for demonstrating the operation method of the wire retainer of a quick connector. 係合アームの突出部の別の構成を示す図である。It is a figure which shows another structure of the protrusion part of an engagement arm.

Explanation of symbols

１クイックコネクタ
３コネクタハウジング
５ワイヤリテーナー
７ホース接続部
２３係合スリット
４７パイプ体
４９環状係合突部
５９係合アーム
６８、８５突出部
８１挿入端部
８２軸方向他方側環状面 DESCRIPTION OF SYMBOLS 1 Quick connector 3 Connector housing 5 Wire retainer 7 Hose connection part 23 Engagement slit 47 Pipe body 49 Annular engagement protrusion 59 Engagement arm 68, 85 Protrusion part
81 Insertion end 82 Axis other side annular surface

Claims

A cylindrical connector housing having a connection portion connected to the hose formed on one axial side and a pair of engagement slits formed opposite to each other in the radial direction on the other axial side, and a pair of engagement arms The pair of engagement arms enter the engagement slit and sandwich the connector housing so that the U-shaped or substantially U-shaped wire retainer is attached to the other axial side of the connector housing. And the engagement arm of the wire retainer protrudes into the connector housing from the engagement slit and is formed at the insertion end when the insertion end of the pipe body is inserted. A quick connector configured to snap-engage with the other annular surface in the axial direction of the engaging protrusion,
The engagement arm is formed so as to engage with the other annular surface in the axial direction of the annular engagement protrusion in a non-contact state with an outer peripheral edge of the other annular surface in the axial direction. And quick connector.

A cylindrical connector housing having a connection portion connected to the hose formed on one axial side and a pair of engagement slits formed opposite to each other in the radial direction on the other axial side, and a pair of engagement arms The pair of engagement arms enter the engagement slit and sandwich the connector housing so that the U-shaped or substantially U-shaped wire retainer is attached to the other axial side of the connector housing. And the engagement arm of the wire retainer protrudes into the connector housing from the engagement slit and is formed in the insertion end when the insertion end of the pipe body is inserted. A quick connector configured to snap-engage with the other annular surface in the axial direction of the engaging protrusion,
The engagement arm is formed so as to engage with the other axial surface of the annular engagement protrusion only on the inner side of the outer peripheral edge of the second annular surface in the axial direction. And quick connector.

The engagement arm has a protruding portion on one side in the axial direction, and one end portion in the axial direction of the protruding portion is inside the outer peripheral edge of the annular surface on the other side in the axial direction, and the protruding portion of the annular engaging protrusion is The engagement arm is brought into contact with and engaged with the other annular surface in the axial direction, so that the engagement arm is located only on the inner side of the outer peripheral edge of the other annular surface in the axial direction. The quick connector according to claim 2, wherein the quick connector engages with an annular surface.

A cylindrical connector housing having a connection portion connected to the hose formed on one axial side and a pair of engagement slits formed opposite to each other in the radial direction on the other axial side, and a pair of engagement arms The pair of engagement arms enter the engagement slit and sandwich the connector housing so that the U-shaped or substantially U-shaped wire retainer is attached to the other axial side of the connector housing. And the engagement arm of the wire retainer protrudes into the connector housing from the engagement slit and is formed at the insertion end when the insertion end of the pipe body is inserted. A quick connector configured to snap-engage with the other annular surface in the axial direction of the engaging protrusion,
The engaging arm engages with the axially other annular surface of the annular engaging protrusion in a state of contact with the outer periphery of the insertion end of the pipe body, and only a contact portion with the outer periphery of the insertion end Is formed so as to engage with the other annular surface in the axial direction of the annular engagement protrusion.

The quick connector according to claim 4, wherein the other annular surface in the axial direction of the annular engagement protrusion has a width wider than the diameter of the engagement arm.