JP5455872B2 - Pipe fittings and valve devices - Google Patents

Pipe fittings and valve devices Download PDF

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JP5455872B2
JP5455872B2 JP2010257120A JP2010257120A JP5455872B2 JP 5455872 B2 JP5455872 B2 JP 5455872B2 JP 2010257120 A JP2010257120 A JP 2010257120A JP 2010257120 A JP2010257120 A JP 2010257120A JP 5455872 B2 JP5455872 B2 JP 5455872B2
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pipe
pipe joint
holding
retainer
valve
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JP2012107704A (en
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仁 古谷
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Piolax Inc
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Piolax Inc
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Description

本発明は、配管を接続可能な管継手およびその管継手を備えるバルブ装置に関する。   The present invention relates to a pipe joint to which pipes can be connected and a valve device including the pipe joint.

車両の燃料タンクには液体燃料の気体を抜く機構が設けられる。具体的には、燃料タンクの上部に外部のキャニスターと連通する配管を設け、その配管の端部にバルブを組み付ける。この配管の端部とバルブは管継手によって接続される。   A fuel tank of the vehicle is provided with a mechanism for extracting a liquid fuel gas. Specifically, a pipe communicating with an external canister is provided at the upper part of the fuel tank, and a valve is assembled at the end of the pipe. The end of the pipe and the valve are connected by a pipe joint.

特許文献１には、一方のホースの端部に結合される雄型継手と、他方のホースの端部に結合される雌型継手との接続を保持部材を介して行って、一方のホースと他方のホースを連結するクイックコネクタが開示されている。この雄型継手の外周面には環状のつば部が形成され、つば部には凹溝が形成されている。また、保持部材の脚部には内面側に周方向溝が形成されている。保持部材の周方向溝と雄型継手の凹溝とは、雄型継手と雌型継手を接続すると嵌合するように構成されている。   In Patent Literature 1, a male joint coupled to the end of one hose and a female joint coupled to the end of the other hose are connected via a holding member, A quick connector for connecting the other hose is disclosed. An annular collar is formed on the outer peripheral surface of the male joint, and a concave groove is formed in the collar. Moreover, the circumferential groove | channel is formed in the inner surface side at the leg part of a holding member. The circumferential groove of the holding member and the concave groove of the male joint are configured to be fitted when the male joint and the female joint are connected.

特開平７−３１７９８２号公報JP 7-317982 A

特許文献１に記載の技術では、保持部材の脚部に形成された周方向溝と雄型継手の外周に形成された凹溝を嵌合させて、雄型継手と雌型継手の相対回転の阻止を図っている。この保持部材の脚部は、雄型継手と雌型継手の接続後の接続解除および再接続などを容易にするため弾性を有しており、接続状態においても動くように構成される。したがって、特許文献１に記載の技術では、保持部材に形成された周方向溝と雄型継手に形成された凹溝を嵌合しても、保持部材が動くためその嵌合にガタツキが生じる可能性がある。   In the technique described in Patent Document 1, the circumferential groove formed in the leg portion of the holding member and the concave groove formed in the outer periphery of the male joint are fitted to each other, and the relative rotation between the male joint and the female joint is reduced. I am trying to prevent it. The leg portion of the holding member has elasticity to facilitate disconnection and reconnection after the male joint and the female joint are connected, and is configured to move even in the connected state. Therefore, in the technique described in Patent Document 1, even if the circumferential groove formed in the holding member and the concave groove formed in the male joint are fitted, the holding member moves, so that the fitting may be loose. There is sex.

本発明はこのような課題に鑑みてなされたものであり、その目的は、配管と管継手との相対回転を防ぎつつ、配管と管継手のガタツキを抑える管継手を提供することにある。   This invention is made | formed in view of such a subject, The objective is to provide the pipe joint which suppresses the backlash of piping and a pipe joint, preventing the relative rotation of piping and a pipe joint.

上記課題を解決するために、本発明のある態様の管継手は、一部に平坦部を有する張出部を形成された配管の端部が挿入される管継手本体と、管継手本体の内部に装着され、配管を保持するリテーナと、を備える。リテーナは、円環部と、円環部から延出して張出部を保持する保持部と、円環部と保持部の間に設けられる先端部と、を有する。管継手本体は、リテーナを装着する装着部と、シールリングを保持するシールリング保持部と、張出部の平坦部と接触するように形成された平面部と、を有する。   In order to solve the above-described problems, a pipe joint according to an aspect of the present invention includes a pipe joint body into which an end of a pipe formed with an overhang part having a flat part is inserted, and an inside of the pipe joint body. And a retainer that holds the pipe. The retainer includes an annular portion, a holding portion that extends from the annular portion and holds the projecting portion, and a tip portion provided between the annular portion and the holding portion. The pipe joint body includes a mounting portion for mounting the retainer, a seal ring holding portion for holding the seal ring, and a flat portion formed so as to come into contact with the flat portion of the overhang portion.

この態様によると、配管を管継手に接続すると、配管の平坦部と管継手本体の平面部とが接触することで平坦部に対する平面部の回転を抑えることができる。リテーナで配管を保持しつつ、管継手本体の平面部により配管との相対回転を制限することで管継手と配管のガタツキを抑えることができる。   According to this aspect, when the pipe is connected to the pipe joint, the flat part of the pipe and the flat part of the pipe joint main body come into contact with each other, whereby rotation of the flat part with respect to the flat part can be suppressed. By holding the pipe with the retainer and restricting the relative rotation with the pipe by the flat portion of the pipe joint main body, it is possible to suppress backlash between the pipe joint and the pipe.

本発明によれば、配管と管継手との相対回転を防ぎつつ、配管と管継手のガタツキを抑えることができる。   According to the present invention, rattling between the pipe and the pipe joint can be suppressed while preventing relative rotation between the pipe and the pipe joint.

実施形態に係る燃料タンクの内部を示す図である。It is a figure which shows the inside of the fuel tank which concerns on embodiment. 実施形態に係るバルブ装置の斜視図である。It is a perspective view of the valve device concerning an embodiment. 実施形態に係る管継手本体の斜視図である。It is a perspective view of the pipe joint main part concerning an embodiment. 実施形態に係るリテーナの斜視図である。It is a perspective view of the retainer concerning an embodiment. 実施形態に係る配管の端部の斜視図である。It is a perspective view of the edge part of piping concerning an embodiment. 実施形態に係る管継手を示す斜視図である。It is a perspective view which shows the pipe joint which concerns on embodiment. 図６に示すＡ−Ａ線における断面図である。It is sectional drawing in the AA shown in FIG. 図６に示すＢ−Ｂ線における断面図である。It is sectional drawing in the BB line shown in FIG. 実施形態に係る管継手に配管を挿入した状態を示す斜視図である。It is a perspective view showing the state where piping was inserted in the pipe joint concerning an embodiment. 図９に示すＣ−Ｃ線における断面図である。It is sectional drawing in the CC line shown in FIG. 図９に示すＤ−Ｄ線における断面図である。It is sectional drawing in the DD line shown in FIG. 図１１に示すＥ−Ｅ線における一部断面斜視図である。It is a partial cross section perspective view in the EE line shown in FIG.

図１は、実施形態に係る燃料タンク１２の内部を示す図である。なお、以下の図面に示される同一または同等の構成要素、部材には、同一の符号を付するものとし、適宜重複した説明は省略する。図１の燃料タンク１２には、車両のエンジンとの連結部分や、液体燃料１４の注入口は省略してある。   Drawing 1 is a figure showing the inside of fuel tank 12 concerning an embodiment. It should be noted that the same or equivalent components and members shown in the following drawings are denoted by the same reference numerals, and redundant description will be omitted as appropriate. In the fuel tank 12 of FIG. 1, a connecting portion with a vehicle engine and an inlet for the liquid fuel 14 are omitted.

車両の燃料タンク１２の内部にはガソリン等の液体燃料１４が貯留されている。実施形態に係るバルブ装置１８は、バルブ１０と管継手２０を備え、燃料タンク１２の上壁に固定部材１６によって固定される。バルブ装置１８は、管継手２０に液体燃料１４の気体を外部に排出するための配管５０が挿入されて保持されている。   Liquid fuel 14 such as gasoline is stored in the fuel tank 12 of the vehicle. The valve device 18 according to the embodiment includes a valve 10 and a pipe joint 20, and is fixed to the upper wall of the fuel tank 12 by a fixing member 16. In the valve device 18, a pipe 50 for discharging the gas of the liquid fuel 14 to the outside is inserted and held in the pipe joint 20.

バルブ１０は、液体燃料１４の気体を燃料タンク１２内に貯め過ぎないように排出する排出口である。液体燃料１４の気体は、バルブ１０から配管５０を通って、配管５０に連結されたキャニスター（不図示）に吸着される。   The valve 10 is a discharge port that discharges the gas of the liquid fuel 14 so as not to be stored in the fuel tank 12 excessively. The gas of the liquid fuel 14 passes through the pipe 50 from the valve 10 and is adsorbed by a canister (not shown) connected to the pipe 50.

バルブ１０は、車両が横転や反転等したときに液体燃料１４が燃料タンク１２から漏れ出ないようにするための機能を備え、いわゆるロールオーバーバルブとして機能する。つまり、バルブ１０は通常時に液体燃料１４の気体を通過させる排出口として機能するが、バルブ１０が液体燃料１４に浸かった場合には燃料タンク１２内と配管５０の連通を遮断する遮断弁として機能する。またバルブ１０は所定角度以上に傾斜すると、燃料タンク１２内と配管５０の連通を遮断するように構成されてもよい。   The valve 10 has a function for preventing the liquid fuel 14 from leaking out of the fuel tank 12 when the vehicle rolls over or reverses, and functions as a so-called rollover valve. In other words, the valve 10 functions as a discharge port through which the gas of the liquid fuel 14 passes during normal operation, but functions as a shut-off valve that blocks communication between the fuel tank 12 and the pipe 50 when the valve 10 is immersed in the liquid fuel 14. To do. Further, the valve 10 may be configured to block communication between the fuel tank 12 and the pipe 50 when the valve 10 is inclined at a predetermined angle or more.

ここで、配管５０にバルブ装置１８を組み付ける工程について説明する。組み付け工程において、配管５０は燃料タンク１２にあらかじめ固定され、配管５０の端部は開放されている。このとき、燃料タンク１２の壁部は一部が開放された状態にあり、開放された箇所から組み付け装置が燃料タンク１２内に入れられる。組み付け装置はバルブ装置１８を保持して配管５０の端部に近づきバルブ装置１８の配管５０の端部を配管挿入口に差し込んで管継手２０により保持させる。   Here, the process of assembling the valve device 18 to the pipe 50 will be described. In the assembly process, the pipe 50 is fixed to the fuel tank 12 in advance, and the end of the pipe 50 is opened. At this time, the wall portion of the fuel tank 12 is partially open, and the assembling device is inserted into the fuel tank 12 from the opened portion. The assembling apparatus holds the valve device 18, approaches the end of the pipe 50, inserts the end of the pipe 50 of the valve apparatus 18 into the pipe insertion port, and holds it by the pipe joint 20.

配管５０に組み付けた後、バルブ装置１８は固定部材１６を介して燃料タンク１２の上壁に溶接される。たとえばバルブ装置１８に固定部材１６を取り付けたとき、バルブ装置１８が所望の状態から傾いていると、固定部材１６も燃料タンク１２の上壁に対して傾いた状態となる。このまま組み付け装置が溶接しようとしても、固定部材１６を燃料タンク１２の上壁に十分な固着力で固定できないことがある。そこで実施形態の管継手２０には配管５０と所望の状態で連結し、連結後の互いの相対的な回転を防止する機構が設けられる。これによりバルブ装置１８が大きく傾いたまま配管５０に接続されることを防ぎ、その後の溶接の不具合も生じにくくすることができる。   After being assembled to the pipe 50, the valve device 18 is welded to the upper wall of the fuel tank 12 via the fixing member 16. For example, when the fixing member 16 is attached to the valve device 18, if the valve device 18 is inclined from a desired state, the fixing member 16 is also inclined with respect to the upper wall of the fuel tank 12. Even if the assembling apparatus tries to perform welding as it is, the fixing member 16 may not be fixed to the upper wall of the fuel tank 12 with a sufficient fixing force. Therefore, the pipe joint 20 according to the embodiment is provided with a mechanism that is connected to the pipe 50 in a desired state and prevents relative rotation after the connection. As a result, it is possible to prevent the valve device 18 from being connected to the pipe 50 while being largely inclined, and to make it difficult for subsequent welding problems to occur.

図２は、実施形態に係るバルブ装置１８の斜視図を示す。管継手本体２１は、バルブ１０と連通しており、管継手本体２１の内部にリテーナ（不図示）を装着した状態で、配管５０の端部を管継手本体２１内に挿入することで、配管５０とバルブ１０が連通状態となる。   FIG. 2 is a perspective view of the valve device 18 according to the embodiment. The pipe joint main body 21 communicates with the valve 10, and the end of the pipe 50 is inserted into the pipe joint main body 21 with a retainer (not shown) mounted inside the pipe joint main body 21. 50 and the valve 10 are in communication.

管継手本体２１は、バルブ１０から突出する筒形状に形成され、配管挿入口側からバルブ１０側に向かって順に第１筒部２２、第２筒部２４を有する。第１筒部２２の先端にはフランジ部２６が形成される。第１筒部２２には、リテーナを装着するための装着部２８が形成される。図２において装着部２８は開口部として形成されている。バルブ装置１８はバルブ１０の上部に取り付けられたアッパーキャップ７４、および、バルブ１０の下部に取り付けられたロアキャップ７６を備える。   The pipe joint main body 21 is formed in a cylindrical shape protruding from the valve 10, and includes a first cylinder portion 22 and a second cylinder portion 24 in order from the pipe insertion port side toward the valve 10 side. A flange portion 26 is formed at the tip of the first tube portion 22. A mounting portion 28 for mounting the retainer is formed on the first tube portion 22. In FIG. 2, the mounting portion 28 is formed as an opening. The valve device 18 includes an upper cap 74 attached to the upper part of the valve 10 and a lower cap 76 attached to the lower part of the valve 10.

図３は、実施形態に係る管継手本体２１の斜視図を示す。フランジ部２６の内側に配管挿入口３８が開口しており、配管挿入口３８から配管５０が挿入される。第１筒部２２の内側面には、第１筒部２２の先端面３１から軸方向に沿って延在し、径方向内向きに突出して、配管５０の挿入をガイドする第１ガイド部３２ａ、第２ガイド部３２ｂ、第３ガイド部３２ｃ、第４ガイド部３２ｄ（とくに区別しない場合は「ガイド部３２」という）が形成されている。なお、軸方向とは、筒形状の管継手本体２１の中心軸と平行な方向をいう。   FIG. 3 is a perspective view of the pipe joint body 21 according to the embodiment. A pipe insertion port 38 is opened inside the flange portion 26, and the pipe 50 is inserted from the pipe insertion port 38. A first guide portion 32 a that extends along the axial direction from the distal end surface 31 of the first tube portion 22 and projects radially inward on the inner side surface of the first tube portion 22 to guide the insertion of the pipe 50. A second guide portion 32b, a third guide portion 32c, and a fourth guide portion 32d (referred to as “guide portion 32” unless otherwise specified) are formed. The axial direction refers to a direction parallel to the central axis of the tubular pipe joint main body 21.

第１ガイド部３２ａと第３ガイド部３２ｃとの間の第１筒部２２の側面には第１装着部２８ａが設けられ、第２ガイド部３２ｂと第４ガイド部３２ｄとの間の第１筒部２２の側面には第２装着部２８ｂが設けられる。第１装着部２８ａおよび第２装着部２８ｂ（とくに区別しない場合は「装着部２８」という）は、第１筒部２２の側面に四角窓のような形状に形成され、互いに対向する位置に設けられる。   A first mounting portion 28a is provided on a side surface of the first cylindrical portion 22 between the first guide portion 32a and the third guide portion 32c, and a first portion between the second guide portion 32b and the fourth guide portion 32d. A second mounting portion 28 b is provided on the side surface of the cylindrical portion 22. The first mounting portion 28 a and the second mounting portion 28 b (referred to as “mounting portion 28” unless otherwise distinguished) are formed on the side surface of the first cylindrical portion 22 in a shape like a square window and are provided at positions facing each other. It is done.

第１ガイド部３２ａと第２ガイド部３２ｂとの間の第１筒部２２の内側面には第１突部３０ａが設けられ、第３ガイド部３２ｃと第４ガイド部３２ｄとの間の第１筒部２２の内側面には第２突部３０ｂが設けられる。第１突部３０ａおよび第２突部３０ｂ（とくに区別しない場合は「突部３０」という）は、第１筒部２２の側面から径方向内向きに突出し、その頂部に平面部が形成される。第１突部３０ａおよび第２突部３０ｂは対向する位置に設けられ、その平面部は平行に設けられる。突部３０は、装着部２８が設けられていない第１筒部２２の側面に設けられる。   A first protrusion 30a is provided on the inner surface of the first cylindrical portion 22 between the first guide portion 32a and the second guide portion 32b, and a first protrusion 30a between the third guide portion 32c and the fourth guide portion 32d. A second protrusion 30 b is provided on the inner surface of the one cylindrical portion 22. The first protrusion 30a and the second protrusion 30b (referred to as “protrusion 30” unless otherwise distinguished) protrude radially inward from the side surface of the first cylindrical portion 22, and a flat portion is formed at the top. . The 1st protrusion 30a and the 2nd protrusion 30b are provided in the position which opposes, and the plane part is provided in parallel. The protrusion 30 is provided on the side surface of the first tube portion 22 where the mounting portion 28 is not provided.

第１筒部２２の配管挿入方向の奥側に、第２筒部２４が形成され、第２筒部２４は円筒形状に形成される。なお、配管挿入方向とは、配管挿入口３８からバルブ１０の内部に向かう方向であり、軸方向に沿った方向である。第２筒部２４の内径は、第１筒部２２の内径より小さく、第１突部３０ａおよび第２突部３０ｂの平面間の最短距離と略同一である。なお、実施形態では２つの突部３０を示しているが、突部３０は１つであってもよい。   The 2nd cylinder part 24 is formed in the back | inner side of the pipe insertion direction of the 1st cylinder part 22, and the 2nd cylinder part 24 is formed in a cylindrical shape. The pipe insertion direction is a direction from the pipe insertion port 38 toward the inside of the valve 10 and is a direction along the axial direction. The inner diameter of the second cylindrical portion 24 is smaller than the inner diameter of the first cylindrical portion 22, and is substantially the same as the shortest distance between the planes of the first protruding portion 30a and the second protruding portion 30b. In the embodiment, two protrusions 30 are shown, but one protrusion 30 may be provided.

第２筒部２４の内周面にはシールリング３６が配置され、この内周面はシールリング３６の外周と接触してシールリング３６を保持するシールリング保持部３４として機能する。シールリング３６は、バルブ装置１８が液体燃料１４に浸かった場合に、配管５０内への液体の侵入を防ぐ。   A seal ring 36 is disposed on the inner peripheral surface of the second cylindrical portion 24, and this inner peripheral surface functions as a seal ring holding portion 34 that holds the seal ring 36 in contact with the outer periphery of the seal ring 36. The seal ring 36 prevents liquid from entering the pipe 50 when the valve device 18 is immersed in the liquid fuel 14.

シールリング保持部３４より配管挿入方向の奥側に、径方向内向きに張り出し、周状に形成された段部３５が設けられる。段部３５は、シールリング３６の配管挿入方向への移動を制限する。シールリング３６より配管挿入方向の奥側に位置する段部３５の内周面の内径は、シールリング保持部３４の内径より小さく、配管５０の外径と略同一または配管５０の外径より微少に大きい。段部３５より配管挿入方向の奥側はバルブ１０の内部となっている。   A stepped portion 35 is provided on the back side in the pipe insertion direction from the seal ring holding portion 34 so as to project inward in the radial direction and be formed in a circumferential shape. The step portion 35 restricts the movement of the seal ring 36 in the pipe insertion direction. The inner diameter of the inner peripheral surface of the step portion 35 located on the back side in the pipe insertion direction from the seal ring 36 is smaller than the inner diameter of the seal ring holding section 34 and is substantially the same as the outer diameter of the pipe 50 or slightly smaller than the outer diameter of the pipe 50. Big. The back side in the pipe insertion direction from the step portion 35 is inside the valve 10.

第１突部３０ａおよび第２突部３０ｂの平面間の最短距離とシールリング３６の外径は略同一に設けられてよい。これにより、シールリング３６の組み付けが容易となる。   The shortest distance between the planes of the first protrusion 30a and the second protrusion 30b and the outer diameter of the seal ring 36 may be provided substantially the same. Thereby, the assembly | attachment of the seal ring 36 becomes easy.

図４は、実施形態に係るリテーナ６０の斜視図を示す。リテーナ６０は、管継手本体２１の内部に装着され、配管５０を保持する。リテーナ６０は、円環部６２と、第１脚部６４ａ、第２脚部６４ｂ、第１延在部６６ａおよび第２延在部６６ｂとを有する。   FIG. 4 is a perspective view of the retainer 60 according to the embodiment. The retainer 60 is mounted inside the pipe joint main body 21 and holds the pipe 50. The retainer 60 includes an annular part 62, a first leg part 64a, a second leg part 64b, a first extension part 66a, and a second extension part 66b.

第１脚部６４ａおよび第２脚部６４ｂ（とくに区別しない場合は「脚部６４」という）は、円環部６２から延出する。第１脚部６４ａおよび第２脚部６４ｂのそれぞれは、円環部６２から軸方向に延出する第１基部６３ａおよび第２基部６３ｂ（とくに区別しない場合は「基部６３」という）と、基部６３から径方向外向きに張り出した第１爪部７２ａおよび第２爪部７２ｂ（とくに区別しない場合は「爪部７２」という）とを有する。   The first leg portion 64 a and the second leg portion 64 b (referred to as “leg portion 64” unless otherwise distinguished) extend from the annular portion 62. Each of the first leg portion 64a and the second leg portion 64b includes a first base portion 63a and a second base portion 63b (referred to as “base portion 63” unless otherwise specified) that extend in the axial direction from the annular portion 62, and a base portion. 63 has a first claw portion 72a and a second claw portion 72b (referred to as “claw portion 72” unless otherwise distinguished) projecting radially outward from 63.

装着する際、爪部７２は円環部６２の外周面より径方向外側に張り出す。基部６３は弾性を有し、脚部６４は互いに離間する方向に拡開でき、互いに近づく方向にも動くことができる。配管５０の端部が挿入されて配管５０を受け入れる際に脚部６４が拡開する。   When mounting, the claw portion 72 protrudes radially outward from the outer peripheral surface of the annular portion 62. The base part 63 has elasticity, and the leg parts 64 can expand in a direction away from each other, and can also move in directions toward each other. When the end of the pipe 50 is inserted and the pipe 50 is received, the leg portion 64 expands.

第１爪部７２ａの第１被係止面６５ａおよび第１被抜け止め部６８ａは、第１装着部２８ａ内の空間に張り出す。第１被係止面６５ａは、リテーナ６０が配管挿入方向へ動いた場合に第１装着部２８ａの内周面に当接して、リテーナ６０の動きが制限される。また、第１被抜け止め部６８ａは、リテーナ６０が配管挿入方向とは逆向きに動いた場合に第１装着部２８ａの内周面に当接して、リテーナ６０の動きが制限される。第１爪部７２ａの第１保持部６７ａは、第１爪部７２ａの内面に円環部６２の内周面より径方向外向きに凹んで形成される。   The first locked surface 65a and the first removal preventing portion 68a of the first claw portion 72a project into the space in the first mounting portion 28a. When the retainer 60 moves in the pipe insertion direction, the first locked surface 65a contacts the inner peripheral surface of the first mounting portion 28a, and the movement of the retainer 60 is restricted. Further, when the retainer 60 moves in the direction opposite to the pipe insertion direction, the first slip-off preventing portion 68a contacts the inner peripheral surface of the first mounting portion 28a, and the movement of the retainer 60 is limited. The first holding portion 67a of the first claw portion 72a is formed on the inner surface of the first claw portion 72a so as to be recessed radially outward from the inner peripheral surface of the annular portion 62.

同様に、第２爪部７２ｂの第２被係止面６５ｂおよび第２被抜け止め部６８ｂは、第２装着部２８ｂ内の空間に張り出す。第２被係止面６５ｂは、リテーナ６０が配管挿入方向へ動いた場合に第２装着部２８ｂの内周面に当接して、リテーナ６０の動きが制限される。また、第２被抜け止め部６８ｂは、リテーナ６０が配管挿入方向とは逆向きに動いた場合に第２装着部２８ｂの内周面に当接して、リテーナ６０の動きが制限される。第２爪部７２ｂの第２保持部６７ｂは、第２爪部７２ｂの内面に円環部６２の内径より径方向外向きに凹んで形成される。第１保持部６７ａおよび第２保持部６７ｂをとくに区別しない場合は「保持部６７」という。   Similarly, the second locked surface 65b and the second removal preventing portion 68b of the second claw portion 72b project into the space in the second mounting portion 28b. When the retainer 60 moves in the pipe insertion direction, the second locked surface 65b contacts the inner peripheral surface of the second mounting portion 28b, and the movement of the retainer 60 is restricted. Further, when the retainer 60 moves in the direction opposite to the pipe insertion direction, the second slip-off preventing portion 68b contacts the inner peripheral surface of the second mounting portion 28b, and the movement of the retainer 60 is restricted. The second holding portion 67b of the second claw portion 72b is formed on the inner surface of the second claw portion 72b so as to be recessed radially outward from the inner diameter of the annular portion 62. When the first holding part 67a and the second holding part 67b are not particularly distinguished, they are referred to as “holding part 67”.

第１延在部６６ａおよび第２延在部６６ｂ（とくに区別しない場合は「延在部６６」という）は、円環部６２から軸方向に延在し、互いに対向する位置に設けられている。延在部６６は、外周面の少なくとも一部に外径が他よりも大きく形成された大径部７０を有する。大径部７０は管継手本体２１に装着した際に、シールリング保持部３４の内周面に接触してリテーナ６０の径方向へのガタツキを抑えることができる。   The first extending portion 66a and the second extending portion 66b (referred to as “extending portion 66” unless otherwise distinguished) extend in the axial direction from the annular portion 62 and are provided at positions facing each other. . The extending part 66 has a large-diameter part 70 having an outer diameter larger than that of the other part on at least a part of the outer peripheral surface. When the large-diameter portion 70 is attached to the pipe joint main body 21, it can come into contact with the inner peripheral surface of the seal ring holding portion 34 and suppress the play of the retainer 60 in the radial direction.

第１延在部６６ａおよび第２延在部６６ｂは、その先端にそれぞれ第１先端部６９ａおよび第２先端部６９ｂ（とくに区別しない場合は「先端部６９」という）を有する。先端部６９は、軸方向において円環部６２と保持部６７の間に設けられ、配管挿入方向の配管５０の動きを制限可能である。   The first extending portion 66a and the second extending portion 66b have a first tip portion 69a and a second tip portion 69b (referred to as “tip portion 69” unless otherwise distinguished) at their tips. The tip portion 69 is provided between the annular portion 62 and the holding portion 67 in the axial direction, and can restrict the movement of the pipe 50 in the pipe insertion direction.

図５は、実施形態に係る配管５０の端部の斜視図を示す。配管５０は、径方向に突出する張出部５２を有する。張出部５２は、配管５０の通常部分５６より外径が大きくなっている。張出部５２の一部には、第１平坦部５４ａおよび第２平坦部５４ｂ（とくに区別しない場合は「平坦部５４」という）が形成されている。配管５０の端部が管継手２０に挿入された場合に、張出部５２は保持部６７に保持される。第１平坦部５４ａおよび第２平坦部５４ｂは平行な位置に配置される。なお、本図では２つの平坦部５４を示すが、平坦部５４は１つであってもよい。   FIG. 5 is a perspective view of an end portion of the pipe 50 according to the embodiment. The pipe 50 has a protruding portion 52 that protrudes in the radial direction. The overhang portion 52 has an outer diameter larger than that of the normal portion 56 of the pipe 50. A first flat portion 54 a and a second flat portion 54 b (referred to as “flat portion 54” unless otherwise distinguished) are formed in part of the overhang portion 52. When the end portion of the pipe 50 is inserted into the pipe joint 20, the overhang portion 52 is held by the holding portion 67. The first flat part 54a and the second flat part 54b are arranged in parallel positions. In addition, although the two flat parts 54 are shown in this figure, the flat part 54 may be one.

図６は、実施形態に係る管継手２０を示す斜視図である。管継手本体２１にリテーナ６０を装着した状態である。図７および図８は、実施形態に係る管継手２０の断面図である。図７は図６に示すＡ−Ａ線における断面を示し、図８は図６に示すＢ−Ｂ線における断面を示す。   FIG. 6 is a perspective view showing the pipe joint 20 according to the embodiment. The retainer 60 is attached to the pipe joint main body 21. 7 and 8 are cross-sectional views of the pipe joint 20 according to the embodiment. 7 shows a cross section taken along line AA shown in FIG. 6, and FIG. 8 shows a cross section taken along line BB shown in FIG.

リテーナ６０は、円環部６２から管継手本体２１の内部に挿入して装着される。すなわち、リテーナ６０の装着状態において、円環部６２は配管挿入方向の奥側に位置し、脚部６４および延在部６６は円環部６２より配管挿入方向の手前側に位置する。   The retainer 60 is inserted and attached to the inside of the pipe joint body 21 from the annular portion 62. That is, when the retainer 60 is mounted, the annular portion 62 is located on the far side in the pipe insertion direction, and the leg portion 64 and the extending portion 66 are located on the near side in the pipe insertion direction from the annular portion 62.

図７に示すように、リテーナ６０の円環部６２は第２筒部２４の内周に挿入され、脚部６４の爪部７２は径方向外向きに装着部２８に張り出している。つまり、装着状態において、第１被抜け止め部６８ａおよび第２被抜け止め部６８ｂは、フランジ部２６の内周より、径方向外側に位置する。リテーナ６０を管継手本体２１に装着する際は、基部６３の弾性により爪部７２を径方向内向きに撓ませて爪部７２を挿入し、爪部７２を装着部２８に配置する。   As shown in FIG. 7, the annular portion 62 of the retainer 60 is inserted into the inner periphery of the second cylindrical portion 24, and the claw portion 72 of the leg portion 64 projects outwardly from the mounting portion 28 in the radial direction. That is, in the mounted state, the first removal preventing portion 68 a and the second removal preventing portion 68 b are located on the radially outer side from the inner periphery of the flange portion 26. When the retainer 60 is mounted on the pipe joint main body 21, the claw 72 is bent inward in the radial direction by the elasticity of the base 63, the claw 72 is inserted, and the claw 72 is disposed on the mounting portion 28.

第１爪部７２ａの第１被係止面６５ａは、リテーナ６０が配管挿入方向に動くと、第１装着部２８ａの第１係止部２５ａに当接して係止される。第１係止部２５ａは、第１装着部２８ａの配管挿入方向の奥側の面である。第１爪部７２ａの第１被抜け止め部６８ａは、リテーナ６０が配管挿入口３８に向かって動いた場合に、第１装着部２８ａの第１抜け止め部２７ａに当接してリテーナ６０の装着が外れないようにされる。第１抜け止め部２７ａは、第１装着部２８ａの配管挿入方向の手前側の面である。   When the retainer 60 moves in the pipe insertion direction, the first locked surface 65a of the first claw portion 72a comes into contact with and is locked to the first locking portion 25a of the first mounting portion 28a. The 1st latching | locking part 25a is the surface of the back | inner side of the piping insertion direction of the 1st mounting part 28a. When the retainer 60 moves toward the pipe insertion port 38, the first retaining portion 68a of the first claw portion 72a abuts on the first retaining portion 27a of the first mounting portion 28a and the retainer 60 is mounted. Will not be removed. The first retaining portion 27a is a front surface of the first mounting portion 28a in the pipe insertion direction.

同様に、第２爪部７２ｂの第２被係止面６５ｂは、リテーナ６０が配管挿入方向に動くと、第２装着部２８ｂの第２係止部２５ｂに当接して係止される。第２爪部７２ｂの第２被抜け止め部６８ｂは、リテーナ６０が配管挿入口３８に向かって動いた場合に、第２装着部２８ｂの第２抜け止め部２７ｂに当接してリテーナ６０の装着が外れないようにされる。第１被係止面６５ａと第１被抜け止め部６８ａの軸方向距離は、装着部２８の軸方向距離より小さい。すなわち、爪部７２は装着部２８に遊嵌されており、装着状態においてリテーナ６０は装着部２８と爪部７２との隙間分だけ軸方向に移動可能である。   Similarly, when the retainer 60 moves in the pipe insertion direction, the second locked surface 65b of the second claw portion 72b comes into contact with and is locked to the second locking portion 25b of the second mounting portion 28b. When the retainer 60 moves toward the pipe insertion port 38, the second retaining portion 68b of the second claw portion 72b contacts the second retaining portion 27b of the second mounting portion 28b and attaches the retainer 60. Will not be removed. The axial distance between the first locked surface 65 a and the first removal preventing portion 68 a is smaller than the axial distance of the mounting portion 28. That is, the claw portion 72 is loosely fitted to the mounting portion 28, and the retainer 60 can move in the axial direction by the gap between the mounting portion 28 and the claw portion 72 in the mounted state.

図７に示すように、爪部７２の内側には保持部６７が配置され、保持部６７は周方向に突部３０と交互に配置され、突部３０と軸方向に重複して配置されている。また第１爪部７２ａと第２爪部７２ｂとの間の領域に、第１突部３０ａが配置されている。第１突部３０ａと第１延在部６６ａは一部が対向するように配置されている。第１先端部６９ａは、保持部６７より配管挿入方向の奥側に位置している。   As shown in FIG. 7, the holding part 67 is arrange | positioned inside the nail | claw part 72, the holding part 67 is alternately arrange | positioned with the protrusion 30 in the circumferential direction, and overlaps with the protrusion 30 and the axial direction. Yes. Further, the first protrusion 30a is disposed in a region between the first claw portion 72a and the second claw portion 72b. The first projecting portion 30a and the first extending portion 66a are disposed so as to partially face each other. The first tip portion 69 a is located on the far side in the pipe insertion direction from the holding portion 67.

図９は、実施形態に係る管継手２０に配管５０を挿入した状態を示す斜視図である。また図１０は図９に示すＣ−Ｃ線における断面図であり、図１１は図９に示すＤ−Ｄ線における断面図である。また、図１２は図１１に示すＥ−Ｅ線における断面図である。図９に示すように配管５０の接続状態において張出部５２が管継手２０の内部で保持されている。   FIG. 9 is a perspective view illustrating a state in which the pipe 50 is inserted into the pipe joint 20 according to the embodiment. 10 is a cross-sectional view taken along a line CC shown in FIG. 9, and FIG. 11 is a cross-sectional view taken along a line DD shown in FIG. 12 is a cross-sectional view taken along the line EE shown in FIG. As shown in FIG. 9, the overhanging portion 52 is held inside the pipe joint 20 in a connected state of the pipe 50.

図１０および図１２では、突部３０の平面部と張出部５２の平坦部５４と接触している状態が示されている。配管５０に対して管継手２０を接続する際に、突部３０の平面部と平坦部５４とを接触させることで、配管５０に対する管継手２０の基準状態からの回転ズレを小さくし、管継手２０およびバルブ１０が大きく傾いた状態で配管５０に組み付けられないようにする。なお、突部３０の平面部と平坦部５４とが平行な状態を基準状態とし、基準状態ではバルブ１０が所望の非傾斜状態にある。   10 and 12 show a state in which the flat portion of the protrusion 30 and the flat portion 54 of the overhang portion 52 are in contact with each other. When connecting the pipe joint 20 to the pipe 50, the flat part 54 of the protrusion 30 and the flat part 54 are brought into contact with each other, thereby reducing the rotational deviation from the reference state of the pipe joint 20 with respect to the pipe 50. 20 and the valve 10 are prevented from being assembled to the pipe 50 in a state of being largely inclined. Note that a state in which the flat portion of the protrusion 30 and the flat portion 54 are parallel is set as a reference state, and the valve 10 is in a desired non-tilted state in the reference state.

第１突部３０ａと第２突部３０ｂとの径方向距離が、第１平坦部５４ａと第２平坦部５４ｂとの径方向距離より、微少に所定値だけ大きくてよい。また張出部５２の平坦部５４が形成されていない部分の外径は、第１突部３０ａと第２突部３０ｂとの径方向距離より大きい。この場合であっても、配管５０に対して管継手２０が挿入される際には、平坦部５４の端部に対して突部３０の平面部が接触して、管継手２０およびバルブ１０が基準状態から大きく傾いて配管５０に組み付けられないようにすることができる。また配管５０と管継手２０の接続を容易にすることができる。   The radial distance between the first protrusion 30a and the second protrusion 30b may be slightly larger than the radial distance between the first flat part 54a and the second flat part 54b by a predetermined value. Further, the outer diameter of the portion where the flat portion 54 of the overhang portion 52 is not formed is larger than the radial distance between the first protrusion 30a and the second protrusion 30b. Even in this case, when the pipe joint 20 is inserted into the pipe 50, the flat part of the protrusion 30 comes into contact with the end of the flat part 54, and the pipe joint 20 and the valve 10 are connected. It is possible to prevent the pipe 50 from being assembled with a large inclination from the reference state. Further, the connection between the pipe 50 and the pipe joint 20 can be facilitated.

接続状態において突部３０の平面部と平坦部５４は常に接触してもよい。この場合、第１突部３０ａと第２突部３０ｂとの径方向距離が、第１平坦部５４ａと第２平坦部５４ｂとの径方向距離と同じであるか、微少に所定値だけ小さくなるよう設定される。これにより、突部３０の平面部と平坦部５４とが密着して、いっそう確実に管継手２０およびバルブ１０が傾いた状態で配管５０に組み付けられないようすることができる。   In the connected state, the flat portion of the protrusion 30 and the flat portion 54 may always come into contact with each other. In this case, the radial distance between the first protrusion 30a and the second protrusion 30b is the same as the radial distance between the first flat part 54a and the second flat part 54b or slightly smaller by a predetermined value. It is set as follows. Thereby, the flat part of the protrusion 30 and the flat part 54 adhere, and it can prevent assembling | attaching to the piping 50 in the state which the pipe joint 20 and the valve | bulb 10 inclined more reliably.

図１２に示すように、車両に振動などによって管継手２０と配管５０とが相対回転しようとした場合、張出部５２の平坦部５４の端部が突部３０の平面部に当接して、基準状態からの相対回転を抑えることができる。   As shown in FIG. 12, when the pipe joint 20 and the pipe 50 are about to rotate relative to each other by vibration or the like in the vehicle, the end of the flat part 54 of the overhanging part 52 comes into contact with the flat part of the protrusion 30, Relative rotation from the reference state can be suppressed.

図１１に示すように張出部５２は保持部６７に保持されているものの、爪部７２は拡開可能に構成されているため、爪部７２が拡開した場合に、張出部５２が保持部６７から外れて、配管挿入方向に動く可能性がある。図１０に示すように、第１先端部６９ａと第２先端部６９ｂの最短距離は、張出部５２の外径より小さい。したがって、張出部５２が保持部６７から外れて、配管５０が配管挿入方向に動こうとしても、張出部５２が先端部６９に当接し、配管５０の動きを制限することができる。これにより、配管５０の配管挿入方向に動きにより脚部６４が大きく拡開して塑性変形することを防ぐことができる。   As shown in FIG. 11, the overhanging portion 52 is held by the holding portion 67, but the claw portion 72 is configured to be expandable. Therefore, when the claw portion 72 is expanded, the overhanging portion 52 is There is a possibility that it moves away from the holding portion 67 and moves in the pipe insertion direction. As shown in FIG. 10, the shortest distance between the first tip portion 69 a and the second tip portion 69 b is smaller than the outer diameter of the overhang portion 52. Therefore, even if the overhanging part 52 is detached from the holding part 67 and the pipe 50 tries to move in the pipe insertion direction, the overhanging part 52 comes into contact with the tip part 69 and the movement of the pipe 50 can be restricted. Thereby, it is possible to prevent the leg portion 64 from being greatly expanded and plastically deformed by the movement of the pipe 50 in the pipe insertion direction.

以上のように、管継手２０において、平坦部５４と突部３０の平面部により基準状態からの相対回転を抑えることができる。リテーナ６０が管継手本体２１に対して移動可能に構成されている場合、リテーナ６０により相対回転を抑える構造と比べて、管継手本体２１により相対回転を抑えることで相対回転方向のガタツキを抑えることができる。そしてガタツキを抑えることで、振動や騒音の発生を抑えることができる。   As described above, in the pipe joint 20, relative rotation from the reference state can be suppressed by the flat portion 54 and the flat portion of the protrusion 30. When the retainer 60 is configured to be movable with respect to the pipe joint body 21, the relative rotation direction is suppressed by suppressing the relative rotation by the pipe joint body 21 compared to the structure in which the relative rotation is suppressed by the retainer 60. Can do. Further, by suppressing backlash, it is possible to suppress the generation of vibration and noise.

本発明は上述の各実施例に限定されるものではなく、当業者の知識に基づいて各種の設計変更等の変形を各実施例に対して加えることも可能であり、そのような変形が加えられた実施例も本発明の範囲に含まれうる。   The present invention is not limited to the above-described embodiments, and various modifications such as design changes can be added to the embodiments based on the knowledge of those skilled in the art. Embodiments described may also be included within the scope of the present invention.

実施形態では、管継手２０により配管５０とバルブ１０を接続する態様を示したが、配管５０をバルブ１０以外のものに接続してもよい。バルブ１０の代わりに管継手２０の第２筒部２４に別種類のバルブや配管を設けて、第２筒部２４の内部と別種類のバルブ等を連通状態にすることで実現できる。   In the embodiment, the pipe 50 and the valve 10 are connected by the pipe joint 20, but the pipe 50 may be connected to something other than the valve 10. This can be realized by providing another type of valve or pipe in the second cylindrical portion 24 of the pipe joint 20 instead of the valve 10 so that the inside of the second cylindrical portion 24 communicates with another type of valve.

実施形態の図１では、配管５０を燃料タンク１２の外部まで延在する態様を示したが、配管５０は、短い管状の部品であってよい。つまり、配管５０は管状の部材に張出部５２および平坦部５４が形成されたものであればよく、その一端は管継手２０に接続するための張出部５２を有し、他端はゴム管に接続するための結合部を有していてもよい。   Although FIG. 1 of the embodiment shows a mode in which the pipe 50 extends to the outside of the fuel tank 12, the pipe 50 may be a short tubular part. That is, the pipe 50 may be any tube-shaped member in which the overhang portion 52 and the flat portion 54 are formed, one end of which has the overhang portion 52 for connection to the pipe joint 20 and the other end is rubber. You may have the coupling | bond part for connecting to a pipe | tube.

実施形態では、先端部６９が延在部６６に設けられている態様を示したが、先端部６９は、円環部６２の先端側の側面であってもよい。   In the embodiment, the aspect in which the tip portion 69 is provided in the extending portion 66 is shown, but the tip portion 69 may be a side surface on the tip side of the annular portion 62.

１０ バルブ、 １２ 燃料タンク、 １４ 液体燃料、 １６ 固定部材、 １８ バルブ装置、 ２０ 管継手、 ２１ 管継手本体、 ２２ 第１筒部、 ２４ 第２筒部、 ２５ａ，２５ｂ 第１および第２係止部、 ２６ フランジ部、 ２７ａ，２７ｂ 第１および第２抜け止め部、 ２８ａ，２８ｂ 第１および第２装着部、 ３０ａ，３０ｂ 第１および第２突部、 ３４ シールリング保持部、 ３５ 段部、 ３６ シールリング、 ３８ 配管挿入口、 ５０ 配管、 ５２ 張出部、 ５４ａ，５４ｂ 第１および第２平坦部、 ６０ リテーナ、 ６２ 円環部、 ６４ａ，６４ｂ 第１および第２脚部、 ６５ 被係止面、 ６６ａ，６６ｂ 第１および第２延在部、 ６７ａ，６７ｂ 第１および第２保持部、 ６９ａ，６９ｂ 第１および第２先端部、 ７０ 大径部。   DESCRIPTION OF SYMBOLS 10 Valve, 12 Fuel tank, 14 Liquid fuel, 16 Fixing member, 18 Valve apparatus, 20 Pipe joint, 21 Pipe main body, 22 1st cylinder part, 24 2nd cylinder part, 25a, 25b 1st and 2nd latching Part, 26 flange part, 27a, 27b first and second retaining part, 28a, 28b first and second mounting part, 30a, 30b first and second projecting part, 34 seal ring holding part, 35 step part, 36 seal ring, 38 piping insertion port, 50 piping, 52 overhanging portion, 54a, 54b first and second flat portions, 60 retainer, 62 annular portion, 64a, 64b first and second leg portions, 65 engaged Stop surface, 66a, 66b first and second extending portions, 67a, 67b first and second holding portions, 69a, 69b first and second tips Department, 70 large-diameter portion.

Claims (4)

一部に平坦部を有する張出部を形成された配管の端部が挿入される管継手本体と、
前記管継手本体の内部に装着され、前記配管を保持するリテーナと、を備え、
前記リテーナは、円環部と、前記円環部から延出して前記張出部を保持する保持部と、前記円環部と前記保持部の間に設けられる先端部と、を有し、
前記管継手本体は、前記リテーナを装着する装着部と、シールリングを保持するシールリング保持部と、前記張出部の前記平坦部と接触するように形成された平面部と、を有することを特徴とする管継手。 A pipe joint body into which an end of a pipe formed with a protruding portion having a flat portion is inserted;
A retainer mounted inside the pipe joint body and holding the pipe;
The retainer includes an annular part, a holding part that extends from the annular part and holds the projecting part, and a tip part provided between the annular part and the holding part,
The pipe joint main body has a mounting portion for mounting the retainer, a seal ring holding portion for holding a seal ring, and a flat portion formed so as to contact the flat portion of the overhang portion. Characteristic pipe joint. 前記先端部は、前記円環部の一部から前記保持部の方向に延在する延在部により形成され、配管挿入方向の前記配管の動きを制限可能であり、配管挿入方向の前記配管の動きに対して前記張出部に当接することで前記配管の動きを制限することを特徴とする請求項１に記載の管継手。   The tip portion is formed by an extending portion extending from a part of the annular portion in the direction of the holding portion, and can restrict the movement of the pipe in the pipe insertion direction. The pipe joint according to claim 1, wherein the movement of the pipe is limited by abutting the overhanging portion with respect to the movement. 前記延在部は、他よりも外径が大きく形成されている部分を有することを特徴とする請求項２に記載の管継手。   The pipe joint according to claim 2, wherein the extending portion has a portion formed to have a larger outer diameter than others. 請求項１から３のいずれかに記載の管継手を備えるバルブ装置であって、
前記管継手は、前記配管とバルブを接続することを特徴とするバルブ装置。 A valve device comprising the pipe joint according to any one of claims 1 to 3,
The pipe joint connects the pipe and the valve.
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JPS62228789A (en) * 1986-03-28 1987-10-07 日産自動車株式会社 Pipe joint structure
DE4413346C1 (en) * 1994-04-18 1995-08-17 Rasmussen Gmbh Push-in coupling for connecting two fluid pipes
JP3373046B2 (en) * 1994-05-25 2003-02-04 倉敷化工株式会社 Quick connector
JP2887574B2 (en) * 1995-12-01 1999-04-26 日本ラセン株式会社 Corrugated tube connector
DE19822574C1 (en) * 1998-05-20 1999-10-14 Raymond A & Cie Fuel line quick coupling for motor vehicle
JP2001342923A (en) * 2000-06-05 2001-12-14 Honda Motor Co Ltd Fuel piping connection structure
DE10230747B3 (en) * 2002-07-09 2004-04-08 Rasmussen Gmbh Plug-in coupling for connecting two fluid lines
JP4871749B2 (en) * 2006-03-29 2012-02-08 東海ゴム工業株式会社 Quick connector
JP5091849B2 (en) * 2008-12-15 2012-12-05 株式会社パイオラックス Pipe fitting

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