JP2010139053A - Pipe joint - Google Patents
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- JP2010139053A JP2010139053A JP2008318963A JP2008318963A JP2010139053A JP 2010139053 A JP2010139053 A JP 2010139053A JP 2008318963 A JP2008318963 A JP 2008318963A JP 2008318963 A JP2008318963 A JP 2008318963A JP 2010139053 A JP2010139053 A JP 2010139053A
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- 210000000078 claw Anatomy 0.000 claims abstract description 26
- 238000003780 insertion Methods 0.000 claims description 35
- 230000037431 insertion Effects 0.000 claims description 35
- 230000000630 rising effect Effects 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 abstract description 8
- 230000007423 decrease Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Description
本発明は、雄型継手と雌型継手とを備え、例えば、チューブやパイプ等の管どうしを接続するために用いられ、特に雄型継手と雌型継手との回転規制を簡単な構造で図ることができる、管継手に関する。 The present invention includes a male joint and a female joint, and is used, for example, for connecting pipes such as tubes and pipes. In particular, the rotation restriction between the male joint and the female joint is restricted with a simple structure. It relates to a pipe joint.
例えば、チューブ、パイプ及びホース等の管どうしを接続する際には、種々の方法が採用されているが、簡単かつ迅速に接続する方法として、雄型継手と雌型継手とを備えた管継手を用い、一方の管を雄型継手に接続し、他方の管を雌型継手に接続して、雄型継手と雌型継手とを組付けることにより、ワンタッチで接続する方法が採用されている。この場合、雄型継手又は雌型継手の一方が他方の継手に対して回転してしまうと、管のねじれ等の原因となるため、雄型継手と雌型継手との回転を規制するための回転防止機能を備えていることが望まれている。 For example, when connecting pipes such as tubes, pipes and hoses, various methods are employed. As a method for connecting the pipes simply and quickly, a pipe joint provided with a male joint and a female joint. Is used, one pipe is connected to the male joint, the other pipe is connected to the female joint, and the male joint and female joint are assembled to connect with one touch. . In this case, if one of the male joint or the female joint rotates with respect to the other joint, it may cause twisting of the pipe, etc., so that the rotation of the male joint and the female joint is restricted. It is desired to have a rotation prevention function.
従来のこの種の管継手として、下記特許文献１には、一方の管に結合される雌型継手と、他方の管に結合される雄型継手とからなり、前記雄型継手は、小径筒体と、この小径筒体に形成した環状つば部から筒軸方向に延出して先端に係合爪が設けられたストッパー部とを有し、前記雌型継手は、前記小径筒体を収容する大径筒体と、前記ストッパー部の係合爪が係合する窓部とを有するクイックコネクタが開示されている。このクイックコネクタでは、前記雄型継手の小径筒体の外周に誘導凸部が形成される一方、前記雌型継手の大径筒部に誘導凹部が形成されており、雌型継手の大径筒体に雄型継手の小径筒体を挿入する際、小径筒体の誘導凸部を大径筒体の誘導凹部に嵌合させることにより、雄型継手と雌型継手とが回転規制された状態で接続されるようになっている。
しかし、上記特許文献１のクイックコネクタでは、雌型継手の大径筒体にストッパー部の係合爪が係合する窓部を設けると共に、雄型継手に誘導凸部を形成し、雌型継手に誘導凹部を形成する必要があるため、構造が複雑となるというデメリットが生じる。特に、雌型継手に窓部や誘導凹部を形成する必要があるため、この種の管継手に用いられている環状突部を有する一般的な雌型継手と共用化することができないという問題があった。 However, in the quick connector disclosed in Patent Document 1, a window portion for engaging the engaging claw of the stopper portion is provided on the large-diameter cylindrical body of the female joint, and a guide convex portion is formed on the male joint. Therefore, there is a demerit that the structure becomes complicated. In particular, since it is necessary to form a window portion and a guide recess in the female joint, there is a problem that it cannot be shared with a general female joint having an annular protrusion used in this type of pipe joint. there were.
また、雌型継手の誘導凹部に、雄型継手の誘導凸部を嵌合させるため、雌型継手の大径筒体に雄型継手の小径筒体を挿入する際に、前記凸部と凹部とを位置合わせしなければならず、接続作業が煩雑で時間がかかるという不都合が生じる。 Further, in order to fit the guide convex part of the male joint into the guide concave part of the female joint, the convex part and the concave part are inserted when the small diameter cylindrical body of the male joint is inserted into the large diameter cylindrical body of the female joint. Must be aligned, resulting in inconvenience that the connection work is complicated and takes time.
更に、雄型継手の係合爪を雌型継手の窓部に係合させ、雄型継手の誘導突部を雌型継手の誘導凹部に係合させて回転規制を図っているので、捩り方向の大きな外力が作用した場合には、破損してしまう可能性があった。 Furthermore, the engagement claw of the male joint is engaged with the window portion of the female joint and the guide protrusion of the male joint is engaged with the guide recess of the female joint so that the rotation is restricted. When a large external force is applied, there is a possibility of breakage.
したがって、本発明の目的は、簡単な構造で雄型継手と雌型継手との回転規制を図ることができると共に、両継手の位置合わせをしなくとも簡単に接続することができ、大きな外力が作用しても破損しにくい管継手を提供することにある。 Therefore, the object of the present invention is to allow the rotation restriction between the male joint and the female joint with a simple structure, and to easily connect the two joints without aligning the two joints. An object of the present invention is to provide a pipe joint that is not easily damaged even if it acts.
上記目的を達成するため、本発明は、筒状の雄型継手と、同じく筒状の雌型継手とを備えた管継手において、
前記雄型継手は、前記雌型継手に挿入される雄管部と、該雄管部の外周から立上がり、該雄管部外周に対し所定間隙を設けて、該雄管部の挿入端部側に向けて延出した少なくとも一対のアーム部と、該アーム部の延出部内側に形成された係合爪部と、前記アーム部の立上がり部よりも前記雄管部の挿入端部側の外周に形成された環状の回転規制リング配置溝と、この回転規制リング配置溝よりも前記雄管部の挿入端部側に形成されたシールリング配置溝とを有し、
前記雌型継手は、前記雄管部外周と前記アーム部の内側との間に挿入される雌管部と、この雌管部の外周に形成され、前記雄型継手に連結された状態で前記アーム部の係合爪部に係合する係止段部とを有し、
前記シールリング配置溝には、前記雄管部の外周と前記雌管部の内周とに当接するシールリングが配置され、
前記回転規制リング配置溝の底壁には、前記雄管部の挿入端部と反対側に向けて次第に拡径する第１テーパ部が設けられており、
前記回転規制リング配置溝には、周方向の一部が切離されてＣ型リング状をなす回転規制リングが配置されており、
該回転規制リングの、前記雄管部の挿入端部と反対側には、前記雌管部の先端が係合する拡径段部が形成され、更に前記雄管部の挿入端部と反対側の内周には、前記雄管部の挿入端部と反対側に向けて内径を次第に拡径させた第２テーパ部が形成されていて、
前記雌管部の内周に前記雄管部を挿入して前記アーム部の係合爪部を前記係止段部に係合させるとき、前記雌管部の先端が前記回転規制リングの拡径段部に係合して、前記回転規制リングを押し込むことにより、前記第１テーパ部に沿って前記第２テーパ部が摺接して前記回転規制リングが拡径し、前記雌管部の内周に圧接されるように構成されていることを特徴とする管継手を提供するものである。
In order to achieve the above object, the present invention provides a tubular joint including a tubular male joint and a tubular female joint,
The male joint includes a male pipe portion inserted into the female joint and an outer periphery of the male pipe section, and a predetermined gap is provided with respect to the outer circumference of the male pipe section. At least a pair of arm portions extending toward the arm, an engaging claw portion formed inside the extending portion of the arm portion, and an outer periphery on the insertion end portion side of the male pipe portion from the rising portion of the arm portion An annular rotation restricting ring arrangement groove formed on and a seal ring arranging groove formed on the insertion end side of the male pipe part from the rotation restricting ring arrangement groove,
The female joint is formed on the outer periphery of the female pipe part and the female pipe part inserted between the outer periphery of the male pipe part and the inner side of the arm part, and is connected to the male joint in the state described above. A locking step portion that engages with the engaging claw portion of the arm portion,
In the seal ring disposition groove, a seal ring that contacts the outer periphery of the male tube portion and the inner periphery of the female tube portion is disposed,
The bottom wall of the rotation regulating ring arrangement groove is provided with a first taper portion that gradually increases in diameter toward the opposite side of the insertion end portion of the male pipe portion,
In the rotation restricting ring arrangement groove, a rotation restricting ring having a C-shaped ring shape by being parted in the circumferential direction is arranged,
On the opposite side of the rotation restricting ring from the insertion end portion of the male tube portion, an enlarged diameter step portion is formed which engages the tip of the female tube portion, and further on the opposite side of the insertion end portion of the male tube portion Is formed with a second taper portion having an inner diameter gradually increased toward the opposite side to the insertion end of the male pipe portion,
When the male tube portion is inserted into the inner periphery of the female tube portion and the engaging claw portion of the arm portion is engaged with the locking step portion, the distal end of the female tube portion is enlarged in diameter of the rotation restricting ring. By engaging the stepped portion and pushing in the rotation restricting ring, the second taper portion slides along the first taper portion to expand the diameter of the rotation restricting ring, and the inner circumference of the female tube portion The present invention provides a pipe joint characterized in that it is configured to be pressed against the pipe.
上記発明によれば、雌型継手の雌管部内周に、雄型継手の雄管部を挿入すると、雄管部のシールリング配置溝に装着されたシールリングが、雄管部外周と雌管部内周との間に弾性的に圧接されて配置され、雌管部と雄管部との間がシールされる。また、雄管部のアーム部の係合爪部が、雌管部の外周の係止段部に係合して、雄管部が雌管部に対して抜け止めされる。更に、雌管部の先端が回転規制リングの拡径段部に係合して、回転規制リングを押し込むことにより、第１テーパ部に沿って第２テーパ部が摺接して回転規制リングが拡径し、雌管部の内周に圧接されるので、雌管部と雄管部とが互いに回り止めされる。 According to the above invention, when the male pipe portion of the male joint is inserted into the inner circumference of the female pipe portion of the female joint, the seal ring mounted in the seal ring disposition groove of the male pipe portion becomes the outer circumference of the male pipe portion and the female pipe. It is elastically pressed between the inner circumferences of the parts, and the space between the female pipe part and the male pipe part is sealed. Further, the engaging claw portion of the arm portion of the male tube portion engages with the engaging step portion on the outer periphery of the female tube portion, so that the male tube portion is prevented from coming off from the female tube portion. Further, the distal end of the female pipe portion engages with the diameter-enlarging step portion of the rotation restricting ring and pushes the rotation restricting ring, so that the second taper portion slides along the first taper portion and the rotation restricting ring expands. Since the diameter of the tube is pressed and pressed against the inner periphery of the female tube portion, the female tube portion and the male tube portion are prevented from rotating together.
このように、雌管部に対する雄管部の押し込みに伴って、回転規制リングが拡径して雌管部内周に圧接することにより、両継手の回転規制を図ることができるので、雌型継手側の構造を、係合段部を設けるだけの簡単な構造にすることができ、雌型継手の共用化を図ることができる。 In this way, as the male pipe part is pushed into the female pipe part, the rotation restricting ring expands and presses against the inner circumference of the female pipe part, so that the rotation of both joints can be restricted. The structure on the side can be a simple structure in which only the engaging step portion is provided, and the female joint can be shared.
また、この管継手においては、雄型継手及び雌型継手に回転規制用の凸部や凹部を形成する必要がなく、それらの位置合わせが不要となるので、雌管部に対して雄管部を押し込むだけの簡単な作業で、回転規制リングを介して両継手を回転規制して連結でき、連結作業を迅速に行うことができる。 Further, in this pipe joint, it is not necessary to form a rotation restricting convex part or concave part on the male joint and the female joint, and their alignment is not required. It is possible to connect the joints by restricting the rotation of the joints via the rotation restricting ring with a simple operation of simply pushing in, and the connecting operation can be performed quickly.
更に、雌管部に雄管部を挿入していくとき、雌管部の先端が回転規制リングの拡径段部に係合して、回転規制リングを押し込むことにより、第１テーパ部に沿って第２テーパ部が摺接して回転規制リングが次第に拡径し、雌管部の内周に圧接されるようになるが、雄管部のアーム部の係合爪部が雌管部の外周の係止段部に係合して連結が完了する直前までは、回転規制リングが雌管部の内周に強く圧接されることはないので、挿入抵抗を比較的小さくすることができる。 Further, when inserting the male tube portion into the female tube portion, the tip of the female tube portion engages with the diameter-enlarging step portion of the rotation restricting ring and pushes in the rotation restricting ring, thereby along the first taper portion. Thus, the second taper portion slides and the rotation restricting ring gradually expands in diameter and comes into pressure contact with the inner periphery of the female tube portion, but the engaging claw portion of the arm portion of the male tube portion is the outer periphery of the female tube portion. The rotation restricting ring is not strongly pressed against the inner periphery of the female tube portion until the connection is completed by engaging with the locking step portion, so that the insertion resistance can be made relatively small.
更にまた、雄型継手と雌型継手とは回転規制リングの摩擦力により回転規制されているので、両継手の一方又は両方に過剰な回転力が作用した場合には、両継手が互いに回転して負荷を逃がすことができるので、両継手が破損する虞れがない。 Furthermore, since the male joint and the female joint are rotationally restricted by the frictional force of the rotation restricting ring, if excessive rotational force is applied to one or both of the joints, the joints will rotate relative to each other. Thus, the load can be released, so there is no risk of both joints being damaged.
加えて、雄型継手と雌型継手との連結を解除すべく、雌管部内周から雄管部を引き抜く場合には、回転規制リングは縮径するので、雌管部内周に対する圧接力が徐々に低下してスムーズに引き抜くことができ、雄型継手と雌型継手との連結解除作業性が損なわれることがない。 In addition, in order to release the connection between the male joint and the female joint, when the male pipe is pulled out from the inner circumference of the female pipe, the rotation restricting ring is reduced in diameter, so that the pressure contact force against the inner circumference of the female pipe is gradually increased. Can be pulled out smoothly and the work of releasing the connection between the male joint and the female joint is not impaired.
本発明によれば、雌型継手の雌管部内に雄型継手の雄管部を挿入すると、雌管部の先端が回転規制リングの拡径段部に係合して、第１テーパ部に沿って第２テーパ部が摺接して回転規制リングが拡径し、雌管部の内周に圧接されるので、雌管部と雄管部とが互いに回り止めされ、雌型継手側の構造を係合段部だけの簡単な構造にでき、雌型継手の共用化を図ることができる。また、雄型継手及び雌型継手に回転規制用の凸部や凹部を形成する必要がなく、位置合わせが不要となるので、雌管部に対して雄管部を押し込むだけの簡単な作業で、回転規制リングを介して両継手を回転規制して連結でき、連結作業を迅速に行うことができる。 According to the present invention, when the male pipe part of the male joint is inserted into the female pipe part of the female joint, the tip of the female pipe part is engaged with the diameter-expanded step part of the rotation restricting ring, and the first taper part is engaged. The second taper portion is slidably contacted to expand the diameter of the rotation restricting ring and is pressed against the inner periphery of the female tube portion, so that the female tube portion and the male tube portion are prevented from rotating together, and the structure on the female joint side Can have a simple structure with only the engaging step portion, and the female joint can be shared. In addition, there is no need to form a rotation restricting projection or recess in the male joint and female joint, and positioning is not required, so it is easy to push the male pipe into the female pipe. Both joints can be connected by restricting rotation via the rotation restricting ring, and the connecting operation can be performed quickly.
以下、図１〜６を参照して、本発明の管継手の一実施形態について説明する。 Hereinafter, with reference to FIGS. 1-6, one Embodiment of the pipe joint of this invention is described.
この管継手１は、例えば、自動車のラジエータ、ヒーターユニット、燃料供給系等において用いられる、チューブやパイプ、ホース等の一対の管どうしを接続するために用いられるもので、図１に示すように、雄型継手１０と、該雄型継手１０に接続される雌型継手３０と、両継手１０，３０間に配置され両者の隙間を封止するシールリング４０と、両継手１０，３０の相対回転を規制する回転規制リング５０とを有している。 This pipe joint 1 is used to connect a pair of pipes such as tubes, pipes, hoses and the like used in, for example, automobile radiators, heater units, fuel supply systems, etc. As shown in FIG. The male joint 10, the female joint 30 connected to the male joint 10, the seal ring 40 disposed between the joints 10, 30 and sealing the gap between the two joints 10, 30, It has a rotation restricting ring 50 that restricts rotation.
まず、雄型継手１０について説明する。図１，２に示すように、この実施形態における雄型継手１０は、直管状の円筒形状をなしている。この雄型継手１０の一端が、後述する雌型継手３０の雌管部３１内に挿入される略円筒状の雄管部１１をなし、それとは反対側の他端が、チューブやパイプ等の管が接続される略円筒状の管接続部１３をなしている。以下、雄管部１１の雌管部３１への挿入側端部を、雄管部１１の挿入端部１１ａとする。 First, the male joint 10 will be described. As shown in FIGS. 1 and 2, the male joint 10 in this embodiment has a straight tubular cylindrical shape. One end of the male joint 10 constitutes a substantially cylindrical male pipe portion 11 inserted into a female pipe portion 31 of a female joint 30 to be described later, and the other end opposite to the male joint 10 is a tube or pipe. A substantially cylindrical pipe connecting portion 13 to which the pipe is connected is formed. Hereinafter, the insertion side end portion of the male tube portion 11 into the female tube portion 31 is referred to as an insertion end portion 11 a of the male tube portion 11.
前記雄管部１１の挿入端部１１ａとは反対側の基端部外周からは、環状のフランジ部１５が外径方向に向かって突設されており、このフランジ部１５の周方向に対向する箇所からは、一対のアーム部１７が前記挿入端部１１ａ側へ向かって伸びている。 An annular flange portion 15 protrudes from the outer periphery of the base end portion on the opposite side of the insertion end portion 11 a of the male pipe portion 11, and faces the circumferential direction of the flange portion 15. From the location, a pair of arm portions 17 extends toward the insertion end portion 11a.
各アーム部１７は、フランジ部１５の外周から外径方向に向けて立ち上がる立上がり部１７ａと、この立上がり部１７ａの先端から、雄管部１１の外周に対して所定間隙を設けて、挿入端部１１ａ側に向けて延出した延出部１７ｂとからなり、撓み可能に形成されている。 Each arm portion 17 has a rising portion 17a that rises from the outer periphery of the flange portion 15 toward the outer diameter direction, and a predetermined gap from the tip of the rising portion 17a to the outer periphery of the male pipe portion 11, and an insertion end portion. It consists of the extension part 17b extended toward 11a side, and is formed so that bending is possible.
また、各アーム部１７の延出部１７ｂの先端内側には、後述する雌型継手３０の係止突部３５に係合する、係合爪部１８がそれぞれ突設されている。各係合爪部１８の先端側には、アーム部先端に向かって次第に高さが低くなる傾斜面１８ａが形成されており、基端側には段状の係合段部１８ｂが形成されており、これが後述する雌型継手３０の係止突部３５の係止段部３５ｂに係合する部分となっている（図５，６参照）。 Further, engaging claw portions 18 that project into engaging protrusions 35 of a female joint 30 to be described later are provided on the inner side of the distal end of the extending portion 17 b of each arm portion 17. An inclined surface 18 a that gradually decreases in height toward the distal end of the arm portion is formed on the distal end side of each engagement claw portion 18, and a stepped engagement step portion 18 b is formed on the proximal end side. This is a portion that engages with a locking step 35b of a locking projection 35 of the female joint 30 described later (see FIGS. 5 and 6).
図１に示すように、上記一対のアーム部１７，１７の先端部には、雄管部１１の挿入端部１１ａ外周との間に所定間隙を設けて、撓み可能とされた楕円形状の解除リング１９が連結されている。この解除リング１９の長径部分の外周には、一対のアーム部１７，１７に直交して、凹凸状の把持部１９ａ，１９ａが設けられている。 As shown in FIG. 1, the oval-shaped release is made possible by providing a predetermined gap between the outer ends of the pair of arm portions 17, 17 and the outer periphery of the insertion end portion 11 a of the male tube portion 11. A ring 19 is connected. On the outer periphery of the long diameter portion of the release ring 19, concave and convex grip portions 19 a and 19 a are provided orthogonal to the pair of arm portions 17 and 17.
また、前記アーム部１７の立上がり部１７ａよりも、雄管部１１の挿入端部１１ａ側の外周には、環状の回転規制リング配置溝２０が形成されている。この回転規制リング配置溝２０に、後述する回転規制リング５０が配置される。図３〜６に示すように、回転規制リング配置溝２０の底壁には、雄管部１１の挿入端部１１ａと反対側に向けて次第に拡径する第１テーパ部２０ａが設けられている。 An annular rotation restricting ring arrangement groove 20 is formed on the outer periphery of the male pipe part 11 on the insertion end part 11a side of the rising part 17a of the arm part 17. A rotation restricting ring 50 described later is disposed in the rotation restricting ring arrangement groove 20. As shown in FIGS. 3 to 6, the bottom wall of the rotation restricting ring arrangement groove 20 is provided with a first taper portion 20 a that gradually increases in diameter toward the side opposite to the insertion end portion 11 a of the male pipe portion 11. .
そして、上記雄型継手１０の回転規制リング配置溝２０には、両継手１０，３０の相対回転を規制する回転規制リング５０が配置されるようになっている。図１に示すように、この回転規制リング５０は、周方向の一部が切離されてＣ型リング状に形成されており、雄管部１１の挿入端部１１ａ側が、前記雌管部３１内に挿入される挿入部５１をなし、雄管部１１の挿入端部１１ａと反対側の端部外周には、周方向に沿って外径方向に向けて鍔状に突出した当接リブ５３が形成されている。この当接リブ５３の、雄管部１１の挿入端部１１ａ側には、段状の拡径段部５３ａが形成されており、雌管部３１の先端が係合する部分となっている。 In the rotation restricting ring arrangement groove 20 of the male joint 10, a rotation restricting ring 50 for restricting relative rotation of both the joints 10 and 30 is arranged. As shown in FIG. 1, the rotation restricting ring 50 is formed in a C-shaped ring shape by cutting off a part in the circumferential direction, and the insertion end 11 a side of the male pipe part 11 is the female pipe part 31. An abutment rib 53 is formed on the outer periphery of the end portion of the male pipe portion 11 opposite to the insertion end portion 11a and protrudes in a bowl shape toward the outer radial direction along the circumferential direction. Is formed. A stepped diameter-increased stepped portion 53 a is formed on the contact rib 53 on the insertion end portion 11 a side of the male tube portion 11, and the tip of the female tube portion 31 is engaged therewith.
図３〜６に示すように、回転規制リング５０の、雄管部１１の挿入端部１１ａと反対側の端部内周には、雄管部１１の挿入端部１１ａと反対側に向けて内径を次第に拡径させた第２テーパ部５５が形成されている。すなわち、この第２テーパ部５５は、第１テーパ部２０ａに適合して、雄管部１１の軸心Ｃに対し傾斜角度θ（図６参照）で傾斜しており、同第１テーパ部２０ａと協動して、回転規制リング５０が雌管部３１によって軸方向に押し込まれるとき、回転規制リング５０を外径方向へ拡径させる役割をなすものである。 As shown in FIGS. 3 to 6, the inner diameter of the rotation restricting ring 50 on the inner periphery of the male tube portion 11 opposite to the insertion end portion 11 a is opposite to the insertion end portion 11 a of the male tube portion 11. A second taper portion 55 having a diameter gradually increased is formed. That is, the second taper portion 55 is adapted to the first taper portion 20a and is inclined at an inclination angle θ (see FIG. 6) with respect to the axis C of the male pipe portion 11, and the first taper portion 20a. When the rotation restricting ring 50 is pushed in the axial direction by the female pipe portion 31, the rotation restricting ring 50 is expanded in the outer diameter direction.
また、上記回転規制リング配置溝２０よりも、雄管部１１の挿入端部１１ａ側には、回転規制リング配置溝２０と同様に、環状をなしたシールリング配置溝２２が形成されている。このシールリング配置溝２２には、雄管部１１の外周と雌管部３１の内周とに当接して両者の隙間を封止する、環状のシールリング４０が配置される。 Further, similar to the rotation restriction ring arrangement groove 20, an annular seal ring arrangement groove 22 is formed on the insertion end portion 11 a side of the male pipe portion 11 with respect to the rotation restriction ring arrangement groove 20. An annular seal ring 40 that contacts the outer periphery of the male tube portion 11 and the inner periphery of the female tube portion 31 and seals the gap between them is disposed in the seal ring arrangement groove 22.
次に、上記雄型継手１０に接続される雌型継手３０について説明する。この雌型継手３０は、前記雄型継手１０と同様、直管状の円筒形状をなしている。また、雌型継手３０の一端は、前記雄管部１１及び前記解除リング１９の外周と、前記アーム部１７及の内側との間に挿入されると共に、前記雄管部１１を内周に受け入れる雌管部３１をなし、この雌管部３１と反対側の他端は、チューブやパイプ等の管が接続される管接続部３３をなしている。 Next, the female joint 30 connected to the male joint 10 will be described. Similar to the male joint 10, the female joint 30 has a straight tubular shape. One end of the female joint 30 is inserted between the outer periphery of the male tube portion 11 and the release ring 19 and the inside of the arm portion 17 and the inner portion, and receives the male tube portion 11 on the inner periphery. A female tube portion 31 is formed, and the other end opposite to the female tube portion 31 forms a tube connection portion 33 to which a tube such as a tube or a pipe is connected.
前記雌管部３１の外周には、環状の係止突部３５が突設されている。この係止突部３５の先端側には、雌管部先端に向かって次第に縮径する傾斜面３５ａが形成され、基端側に段状の係止段部３５ｂが形成されている。この係止段部３５ｂは、雌型継手３０が雄型継手１０に連結された状態で、前記係合爪部１８の係合段部１８ｂに係合する部分となっている。なお、係止突部３５は、環状に突設したものに限定されず、環状の凹溝状をなしていてもよく、雄型継手１０の係合爪部１８に係合可能な係止段部を備える形状であれば、特に限定されない。 On the outer periphery of the female pipe portion 31, an annular locking projection 35 is projected. An inclined surface 35a that gradually decreases in diameter toward the distal end of the female tube portion is formed on the distal end side of the locking projection 35, and a stepped locking step portion 35b is formed on the proximal end side. The locking step portion 35 b is a portion that engages with the engagement step portion 18 b of the engagement claw portion 18 in a state where the female joint 30 is connected to the male joint 10. Note that the locking projection 35 is not limited to an annular projection, and may have an annular groove shape, and can be engaged with the engagement claw portion 18 of the male joint 10. If it is a shape provided with a part, it will not specifically limit.
また、雌管部３１の先端は、雄型継手１０の雄管部１１を、雌型継手３０の雌管部３１に挿入するとき、図４に示すように、回転規制リング５０の当接リブ５３に当接するようになっている。このとき、雄型継手１０のアーム部１７は、雌管部３１の係止突部３５によって外側に湾曲するように押し広げられるが、係止段部３５ｂに係合段部１８ｂが嵌合する状態には至っていない。 Further, the distal end of the female pipe portion 31 is arranged such that when the male pipe portion 11 of the male joint 10 is inserted into the female pipe portion 31 of the female joint 30, as shown in FIG. 53 abuts. At this time, the arm portion 17 of the male joint 10 is expanded so as to be bent outward by the locking projection 35 of the female tube portion 31, but the engaging step portion 18 b is fitted to the locking step portion 35 b. The state has not been reached.
そして、雄型継手１０の雄管部１１を、雌型継手３０の雌管部３１に更に深く挿入すると、図５に示すように、雌管部３１の先端が回転規制リング５０の当接リブ５３を押して、回転規制リング５０が雄管部１１のアーム部１７の基部側に向けて押し込まれる。このとき、回転規制リング５０の第２テーパ部５５が、雄型継手１０の回転規制リング配置溝２０の第１テーパ部２０ａに摺接し、回転規制リング５０が拡径して、雌管部３０の内周に圧接され、雄管部１０と雌管部３０とが回転規制される。 When the male pipe portion 11 of the male joint 10 is inserted further deeply into the female pipe portion 31 of the female joint 30, the tip of the female pipe portion 31 is brought into contact with the contact rib of the rotation restricting ring 50 as shown in FIG. 53, the rotation restricting ring 50 is pushed toward the base side of the arm portion 17 of the male pipe portion 11. At this time, the second taper portion 55 of the rotation restricting ring 50 comes into sliding contact with the first taper portion 20a of the rotation restricting ring arrangement groove 20 of the male joint 10, and the rotation restricting ring 50 expands in diameter, so that the female tube portion 30 is in contact. The male tube portion 10 and the female tube portion 30 are rotationally restricted.
また、雄型継手１０の係合爪部１８及びこれに係合する雌型継手３０の係止段部３５ｂは、回転規制リング５０が雌管部３１の先端に押し込まれて拡径したときに、係合する位置となるように、その軸方向位置が設定されている。 Further, the engaging claw portion 18 of the male joint 10 and the engaging step portion 35b of the female joint 30 engaged therewith are expanded when the rotation restricting ring 50 is pushed into the tip of the female tube portion 31. The position in the axial direction is set so that the position is engaged.
このため、回転規制リング５０が拡径して、雌管部３０の内周に圧接され、雄管部１０と雌管部３０とが回転規制されると同時に、雄型継手１０のアーム部１７の係合段部１８ｂが、雌管部３１の係止突部３５ｂに嵌合して、雄型継手１０と雌型継手３０とが連結されるようになっている。 For this reason, the diameter of the rotation restricting ring 50 is expanded and pressed against the inner periphery of the female pipe part 30, and the male pipe part 10 and the female pipe part 30 are restricted from rotation, and at the same time, the arm part 17 of the male joint 10. The engaging step portion 18b is fitted into the locking projection 35b of the female tube portion 31, so that the male joint 10 and the female joint 30 are connected.
この状態で、図６に示すように、アーム部１７の立上がり部１７ａの内側と、回転規制リング５０の、雄管部１１の挿入端部１１ａと反対側の端部に設けられた当接リブ５３（後述する）の端面との間には、所定の隙間Ｄ１が形成されており、回転規制リング５０がアーム部１７の立上がり部１７ａに当接しないようになっている。上記隙間Ｄ１を設けることにより、後述するように、回転規制リング５０を確実に拡径させることができる。 In this state, as shown in FIG. 6, the contact rib provided on the inner side of the rising portion 17 a of the arm portion 17 and the end portion of the rotation restricting ring 50 opposite to the insertion end portion 11 a of the male tube portion 11. A predetermined gap D1 is formed between the end face 53 (described later) and the rotation restricting ring 50 is prevented from coming into contact with the rising portion 17a of the arm portion 17. By providing the gap D1, the diameter of the rotation restricting ring 50 can be reliably expanded as will be described later.
なお、アーム部１７の延出部１７ｂの内側と、雌型継手３０の雌管部３１の外周との間には、所定の隙間Ｄ２が形成されており、雌管部３１の先端部がアーム部１７の延出部１７ｂの内側に干渉しないようになっている。 A predetermined gap D2 is formed between the inside of the extension portion 17b of the arm portion 17 and the outer periphery of the female tube portion 31 of the female joint 30, and the distal end portion of the female tube portion 31 is the arm. It does not interfere with the inside of the extended portion 17 b of the portion 17.
また、図６に示すように、第１テーパ部２０ａ及び第２テーパ部５５の、雄管部１１の軸心Ｃに対する傾斜角度θは、５〜４５°であることが好ましく、５．７〜３５°であることがより好ましい。すなわち、Ｆ２／Ｆ１＝ｔａｎθの関係に立つので、例えば、θが５．７°のときは、回転規制リング５０が１ｍｍ押し込まれると、０．１ｍｍ拡径し、θが４５°のときは、回転規制リング５０が１ｍｍ押し込まれると、１ｍｍ拡径することになる。傾斜角度θが５°未満の場合は、回転規制リング５０の拡径長が小さくなって、回転規制リング５０を雌管部３１内周に十分な圧接力で圧接させにくくなるので好ましくない。また、傾斜角度θが４５°を超えると、挿入抵抗が増大して、回転規制リング５０を押し込みにくくなるので好ましくない。 Moreover, as shown in FIG. 6, it is preferable that the inclination | tilt angle (theta) with respect to the axial center C of the male pipe part 11 of the 1st taper part 20a and the 2nd taper part 55 is 5-45 degrees, 5.7-. More preferably, it is 35 °. That is, since the relationship of F2 / F1 = tan θ is established, for example, when θ is 5.7 °, when the rotation restricting ring 50 is pushed in by 1 mm, the diameter is increased by 0.1 mm, and when θ is 45 °, When the rotation restricting ring 50 is pushed in by 1 mm, the diameter is increased by 1 mm. An inclination angle θ of less than 5 ° is not preferable because the diameter of the rotation restricting ring 50 is reduced and the rotation restricting ring 50 is difficult to be brought into pressure contact with the inner periphery of the female pipe portion 31 with a sufficient pressure contact force. Further, if the inclination angle θ exceeds 45 °, the insertion resistance increases and it becomes difficult to push the rotation restricting ring 50, which is not preferable.
次に、上記構成からなる管継手１の使用方法について説明する。 Next, the usage method of the pipe joint 1 which consists of the said structure is demonstrated.
まず、雄型継手１０のシールリング配置溝２２に、シールリング４０を挿入し装着させると共に、同雄型継手１０の回転規制リング配置溝２０に回転規制リング５０を挿入し、第１テーパ部２０ａに第２テーパ部５５の傾斜向きを整合させた状態で、回転規制リング５０を装着させる。 First, the seal ring 40 is inserted and attached to the seal ring arrangement groove 22 of the male joint 10, and the rotation restriction ring 50 is inserted into the rotation restriction ring arrangement groove 20 of the male joint 10, and the first taper portion 20 a. The rotation restricting ring 50 is attached in a state where the inclination direction of the second taper portion 55 is aligned.
そして、図３に示すように、雌型継手３０に対して雄型継手１０を押し込んで、雌管部３１の内周に、雄管部１１を挿入していくと共に、雌管部３１を雄管部１１とアーム部１７の内側及び解除リング１９との間隙に挿入していく。 Then, as shown in FIG. 3, the male joint 10 is pushed into the female joint 30, and the male pipe part 11 is inserted into the inner periphery of the female pipe part 31. The tube portion 11 is inserted into the gap between the arm portion 17 and the release ring 19.
すると、雌型継手３０の係止突部３５の傾斜面３５ａに、雄型継手１０の係合爪部１８の傾斜面１８ａが押圧されて、一対のアーム部１７，１７を押し広げつつ挿入されると共に、シールリング４０が雄管部１１外周と雌管部３１内周との間に弾性的に圧接されて、雌管部３１と雄管部１１との間がシールされる。 Then, the inclined surface 18a of the engaging claw portion 18 of the male joint 10 is pressed against the inclined surface 35a of the locking projection 35 of the female joint 30, and the pair of arm portions 17 and 17 are inserted while being widened. At the same time, the seal ring 40 is elastically pressed between the outer periphery of the male tube portion 11 and the inner periphery of the female tube portion 31 to seal between the female tube portion 31 and the male tube portion 11.
図４に示すように、更に雄管部１１を雌管部３１内に挿入すると、雌管部３１の先端部が、回転規制リング５０の拡径段部５３ａに突き当たって係合する。このとき、雄型継手１０のアーム部１７は、雌管部３１の係止突部３５によって外側に湾曲するように押し広げられる。 As shown in FIG. 4, when the male tube portion 11 is further inserted into the female tube portion 31, the distal end portion of the female tube portion 31 abuts against and engages with the enlarged diameter step portion 53 a of the rotation restricting ring 50. At this time, the arm portion 17 of the male joint 10 is expanded so as to be bent outward by the locking projection 35 of the female tube portion 31.
そして、図５に示すように、更に雄管部１１を雌管部３１内に挿入すると、回転規制リング５０の拡径段部５３ａが雌管部３１の先端部によって押込力Ｆ１（図６参照）の力で押され、雄管部１０の第１テーパ部２０ａに沿って、回転規制リング５０の第２テーパ部５５が摺接して、回転規制リング５０が雄管部１１の挿入端部１１ａから離れる方向に移動すると共に、次第に拡径する。 As shown in FIG. 5, when the male tube portion 11 is further inserted into the female tube portion 31, the diameter-enlarging step portion 53 a of the rotation restricting ring 50 is pushed by the distal end portion of the female tube portion 31 (see FIG. 6). ), The second tapered portion 55 of the rotation restricting ring 50 is slidably contacted along the first tapered portion 20a of the male tube portion 10, and the rotation restricting ring 50 is inserted into the insertion end portion 11a of the male tube portion 11. The diameter gradually increases while moving away from the center.
その結果、回転規制リング５０の挿入部５１の外周が、雌管部３１の内周に、押圧力Ｆ２（図６参照）で圧接され、両者の間に摩擦力が作用する。このとき、第１テーパ部２０ａ及び第２テーパ部５５も互いに当接して、両者の間に摩擦力が作用しているので、回転規制リング５０を介して、雌管部３１及び雄管部１１が回り止めされて、雌型継手３０と雄型継手１０との回転規制を図ることができる。 As a result, the outer periphery of the insertion portion 51 of the rotation restricting ring 50 is pressed against the inner periphery of the female tube portion 31 with a pressing force F2 (see FIG. 6), and a frictional force acts between the two. At this time, since the first taper portion 20a and the second taper portion 55 are also in contact with each other and a frictional force acts between them, the female tube portion 31 and the male tube portion 11 are interposed via the rotation restricting ring 50. The rotation of the female joint 30 and the male joint 10 can be restricted.
また、雌型継手３０と雄型継手１０との間で回転規制がなされると同時に、アーム部１７の先端内側の係合爪部１８が、雌型継手３０の係止段部３５ｂを乗り越えて、アーム部１７が弾性復帰し、係合爪部１８の係合段部１８ｂが、係止突部３５の係止段部３５ｂに係合して、雄管部１１が雌管部３１に対して抜け止めされて、雌型継手３０と雄型継手１０とを連結させることができる。 Further, at the same time that the rotation is restricted between the female joint 30 and the male joint 10, the engaging claw portion 18 inside the tip of the arm portion 17 gets over the locking step 35 b of the female joint 30. The arm portion 17 is elastically restored, the engagement step portion 18 b of the engagement claw portion 18 is engaged with the engagement step portion 35 b of the engagement protrusion 35, and the male tube portion 11 is against the female tube portion 31. Thus, the female joint 30 and the male joint 10 can be connected.
以上説明したように、この管継手１では、雌管部３１に対して雄管部１１を押し込んでいくことにより、回転規制リング５０が拡径して雌管部３１の内周に圧接し、両管部３１，１１の回り止めがなされて、雌型継手３０と雄型継手１０との回転規制を図ることができる。このとき、雌型継手３０には、雄型継手１０との回り止めに際し、何ら特別な構造が必要ではなく、アーム部１７内側の係合爪部１８に係合する、係止段部３５ｂを設けるだけの簡単な構造にすることができ、雌型継手３０の共用化を図ることができる。例えば、雌型継手３０として、係止段部３５ｂを有する既存形状のものを採用できる。 As described above, in this pipe joint 1, when the male pipe part 11 is pushed into the female pipe part 31, the rotation restricting ring 50 is expanded in diameter and is pressed against the inner periphery of the female pipe part 31. Both pipe portions 31 and 11 are prevented from rotating, and the rotation of the female joint 30 and the male joint 10 can be restricted. At this time, the female joint 30 is not required to have any special structure to prevent rotation with the male joint 10, and has a locking step 35 b that engages with the engaging claw 18 inside the arm 17. It is possible to make the structure simple by providing, and the female joint 30 can be shared. For example, an existing shape having a locking step 35b can be adopted as the female joint 30.
また、この管継手１においては、雄型継手１０及び雌型継手３０に回転規制用の凸部や凹部を形成する必要がなく、それらの位置合わせが不要となるので、雌管部３１に対して雄管部１１を押し込むだけの簡単な作業で、回転規制リング５０を介して両継手１０，３０を回転規制して連結でき、連結作業を迅速に行うことができる。 Further, in this pipe joint 1, it is not necessary to form convex and concave portions for restricting rotation in the male joint 10 and the female joint 30, and their alignment is not necessary. Thus, the joints 10 and 30 can be connected by restricting the rotation via the rotation restricting ring 50 with a simple operation of simply pushing the male pipe portion 11, and the connecting operation can be performed quickly.
ところで、この管継手１においては、上述したように雌管部３１に雄管部１１を挿入していくとき、雌管部３１の先端が回転規制リング５０の拡径段部５３ａに係合して、回転規制リング５０を押し込むことにより、第１テーパ部２０ａに沿って第２テーパ部５５が摺接して回転規制リング５０が次第に拡径し、雌管部３１の内周に圧接されるようになっている。しかし、雄管部１１のアーム部１７の係合爪部１８が、雌管部３１の外周の係止段部３５ｂに係合して、雌型継手３０と雄型継手１０との連結が完了する直前までは、回転規制リング５０が雌管部３１の内周に強く圧接されることはないので、挿入抵抗を比較的小さくすることができる。 By the way, in this pipe joint 1, when the male pipe part 11 is inserted into the female pipe part 31 as described above, the tip of the female pipe part 31 engages with the enlarged diameter step part 53 a of the rotation restricting ring 50. By pushing the rotation restricting ring 50, the second tapered portion 55 is slidably contacted along the first tapered portion 20a so that the rotation restricting ring 50 gradually increases in diameter and is pressed against the inner periphery of the female pipe portion 31. It has become. However, the engaging claw portion 18 of the arm portion 17 of the male pipe portion 11 is engaged with the engaging step portion 35b on the outer periphery of the female pipe portion 31, and the connection between the female joint 30 and the male joint 10 is completed. Until just before the rotation, the rotation restricting ring 50 is not strongly pressed against the inner periphery of the female pipe portion 31, so that the insertion resistance can be made relatively small.
更に、雄型継手１０と雌型継手３０とは回転規制リングの摩擦力により回転規制されているので、両継手１０，３０の一方又は両方に過剰な回転力が作用した場合には、両継手１０，３０が互いに回転して負荷を逃がすことができるので、両継手１０，３０が破損する虞れがない。 Furthermore, since the male joint 10 and the female joint 30 are rotationally restricted by the frictional force of the rotation restricting ring, if excessive rotational force acts on one or both of the joints 10 and 30, both joints Since 10 and 30 can mutually rotate and a load can be released, there is no possibility that both joints 10 and 30 will be damaged.
なお、メンテナンス等の理由により、雄型継手１０及び雌型継手３０どうしの連結を解除したい場合は、解除リング１９外周の把持部１９ａ，１９ａを互いに近接するように押し付ける。すると、雄管部１１外周と係合爪部１８内周との隙間が広がるように、解除リング１９が弾性変形して、係止突部３５の係止段部３５ｂと、各係合爪部１８の係合段部１８ｂとの係合が解除される。この状態で雌管部３１の内周から雄管部１１を引き抜くことにより、雄型継手１０と雌型継手３０との連結を解除することができる。 When it is desired to release the connection between the male joint 10 and the female joint 30 for maintenance reasons, the grips 19a and 19a on the outer periphery of the release ring 19 are pressed so as to be close to each other. Then, the release ring 19 is elastically deformed so that a gap between the outer periphery of the male pipe portion 11 and the inner periphery of the engagement claw portion 18 is widened, and the engagement step portion 35b of the engagement protrusion 35 and each engagement claw portion. The engagement with the 18 engagement step portions 18b is released. The male joint 10 and the female joint 30 can be disconnected by pulling out the male pipe portion 11 from the inner periphery of the female pipe portion 31 in this state.
この管継手１においては、上記のように雌管部３１内周から雄管部１１を引き抜くときには、回転規制リング５０は縮径するようになっているので、雌管部３１の内周に対する圧接力が徐々に低下して、雄管部１１をスムーズに引き抜くことができ、雄型継手１０と雌型継手３０との連結作業性が損なわれることがない。 In this pipe joint 1, when the male pipe part 11 is pulled out from the inner circumference of the female pipe part 31 as described above, the rotation restricting ring 50 is reduced in diameter, so that it is pressed against the inner circumference of the female pipe part 31. The force gradually decreases, the male pipe portion 11 can be pulled out smoothly, and the connection workability between the male joint 10 and the female joint 30 is not impaired.
また、この実施形態では、図６に示すように、回転規制リング５０が雌管部３１の先端に押し込まれて拡径したときに、アーム部１７の立上がり部１７ａの内側と、回転規制リング５０の、雄管部１１の挿入端部１１ａと反対側の端部に設けられた当接リブ５３（後述する）の端面との間に、所定の隙間Ｄ１が形成されており、回転規制リング５０がアーム部１７の立上がり部１７ａに当接しないようになっているので、回転規制リング５０の拡径がアーム部１７によって妨げられることはなく、充分な回転摩擦力が得られるまで拡径させることができる。 Further, in this embodiment, as shown in FIG. 6, when the rotation restricting ring 50 is pushed into the tip of the female pipe portion 31 to increase the diameter, the inside of the rising portion 17 a of the arm portion 17 and the rotation restricting ring 50 are provided. A predetermined gap D <b> 1 is formed between an end surface of an abutment rib 53 (described later) provided at the end opposite to the insertion end portion 11 a of the male tube portion 11, and the rotation restricting ring 50. Is not brought into contact with the rising portion 17a of the arm portion 17, so that the diameter of the rotation restricting ring 50 is not hindered by the arm portion 17 and is increased until a sufficient rotational frictional force is obtained. Can do.
１ 管継手
１０ 雄型継手
１１ 雄管部
１１ａ 挿入端部
１７ アーム部
１７ａ 立上がり部
１７ｂ 延出部
１８ 係合爪部
２０ 回転規制リング配置溝
２０ａ 第１テーパ部
２２ シールリング配置溝
３０ 雌型継手
３１ 雌管部
３５ｂ 係止段部
４０ シールリング
５０ 回転規制リング
５１ 挿入部
５３ａ 拡径段部
５５ 第２テーパ部
DESCRIPTION OF SYMBOLS 1 Pipe joint 10 Male joint 11 Male pipe part 11a Insertion end part 17 Arm part 17a Rising part 17b Extension part 18 Engagement claw part 20 Rotation control ring arrangement | positioning groove | channel 20a 1st taper part 22 Seal ring arrangement | positioning groove | channel 30 Female joint 31 Female pipe part 35b Locking step part 40 Seal ring 50 Rotation restricting ring 51 Insertion part 53a Diameter expansion step part 55 Second taper part
Claims (1)
前記雄型継手は、前記雌型継手に挿入される雄管部と、該雄管部の外周から立上がり、該雄管部外周に対し所定間隙を設けて、該雄管部の挿入端部側に向けて延出した少なくとも一対のアーム部と、該アーム部の延出部内側に形成された係合爪部と、前記アーム部の立上がり部よりも前記雄管部の挿入端部側の外周に形成された環状の回転規制リング配置溝と、この回転規制リング配置溝よりも前記雄管部の挿入端部側に形成されたシールリング配置溝とを有し、
前記雌型継手は、前記雄管部外周と前記アーム部の内側との間に挿入される雌管部と、この雌管部の外周に形成され、前記雄型継手に連結された状態で前記アーム部の係合爪部に係合する係止段部とを有し、
前記シールリング配置溝には、前記雄管部の外周と前記雌管部の内周とに当接するシールリングが配置され、
前記回転規制リング配置溝の底壁には、前記雄管部の挿入端部と反対側に向けて次第に拡径する第１テーパ部が設けられており、
前記回転規制リング配置溝には、周方向の一部が切離されてＣ型リング状をなす回転規制リングが配置されており、
該回転規制リングの、前記雄管部の挿入端部と反対側には、前記雌管部の先端が係合する拡径段部が形成され、更に前記雄管部の挿入端部と反対側の内周には、前記雄管部の挿入端部と反対側に向けて内径を次第に拡径させた第２テーパ部が形成されていて、
前記雌管部の内周に前記雄管部を挿入して前記アーム部の係合爪部を前記係止段部に係合させるとき、前記雌管部の先端が前記回転規制リングの拡径段部に係合して、前記回転規制リングを押し込むことにより、前記第１テーパ部に沿って前記第２テーパ部が摺接して前記回転規制リングが拡径し、前記雌管部の内周に圧接されるように構成されていることを特徴とする管継手。 In a pipe joint comprising a tubular male joint and a tubular female joint,
The male joint includes a male pipe portion inserted into the female joint and an outer periphery of the male pipe section, and a predetermined gap is provided with respect to the outer circumference of the male pipe section. At least a pair of arm portions extending toward the arm, an engaging claw portion formed inside the extending portion of the arm portion, and an outer periphery on the insertion end portion side of the male pipe portion from the rising portion of the arm portion An annular rotation restricting ring arrangement groove formed on and a seal ring arranging groove formed on the insertion end side of the male pipe part from the rotation restricting ring arrangement groove,
The female joint is formed on the outer periphery of the female pipe part and the female pipe part inserted between the outer periphery of the male pipe part and the inner side of the arm part, and is connected to the male joint in the state described above. A locking step portion that engages with the engaging claw portion of the arm portion,
In the seal ring disposition groove, a seal ring that contacts the outer periphery of the male tube portion and the inner periphery of the female tube portion is disposed,
The bottom wall of the rotation restricting ring arrangement groove is provided with a first taper portion that gradually increases in diameter toward the opposite side of the insertion end portion of the male pipe portion,
In the rotation restricting ring arrangement groove, a rotation restricting ring having a C-shaped ring shape by being parted in the circumferential direction is arranged,
On the opposite side of the rotation restricting ring from the insertion end portion of the male tube portion, an enlarged diameter step portion is formed which engages the tip of the female tube portion, and further on the opposite side of the insertion end portion of the male tube portion Is formed with a second taper portion having an inner diameter gradually increased toward the opposite side to the insertion end of the male pipe portion,
When the male tube portion is inserted into the inner periphery of the female tube portion and the engaging claw portion of the arm portion is engaged with the locking step portion, the distal end of the female tube portion is enlarged in diameter of the rotation restricting ring. By engaging the stepped portion and pushing in the rotation restricting ring, the second taper portion slides along the first taper portion to expand the diameter of the rotation restricting ring, and the inner circumference of the female tube portion A pipe joint that is configured to be pressed against the pipe.
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| JP2012107704A (en) * | 2010-11-17 | 2012-06-07 | Piolax Inc | Pipe joint and valve device |
| US9413099B2 (en) | 2012-03-01 | 2016-08-09 | Molex, Llc | Feed through panel connector with seal |
| CN106352183A (en) * | 2016-09-23 | 2017-01-25 | 浙江工业大学 | Clamping jaw type quick joint for pipelines |
| CN109967635A (en) * | 2011-12-28 | 2019-07-05 | Rls有限责任公司 | Cooling route group connector and the method that cooling route is engaged with each other with it |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110306729A (en) * | 2019-06-21 | 2019-10-08 | 同济大学 | A kind of removable sleeved grouting connection design and construction method |
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| JP5091849B2 (en) | 2012-12-05 |
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