JP2019132304A

JP2019132304A - Pipe joint

Info

Publication number: JP2019132304A
Application number: JP2018013011A
Authority: JP
Inventors: 智辻田; Satoshi Tsujita
Original assignee: Nitto Kohki Co Ltd
Current assignee: Nitto Kohki Co Ltd
Priority date: 2018-01-29
Filing date: 2018-01-29
Publication date: 2019-08-08
Anticipated expiration: 2038-01-29
Also published as: JP7029302B2

Abstract

【課題】より幅広い形状の管部材を連結することが可能となる管継手を提供する。【解決手段】当該管継手１０は、筒状の管継手本体１２と、施錠子１４とを備える、施錠子１４は、保持部２６と施錠突部２８とからなる施錠子本体１６と、施錠子本体１６を径方向内側に付勢するバネ部材１８とを備える。連結状態においては、施錠子１４の施錠突部２８が管部材１の施錠子係止溝３に係合する。この連結状態から管部材１を前方に変位させると、施錠子１４が管部材１により前方に押圧され、施錠子１４の前方及び後方内向摺動傾斜面３６、３８が管継手本体１２の前方及び後方外向摺動傾斜面４０、４２にそれぞれ係合する。さらに管部材１を変位させると、施錠子１４は管部材１とともに前方に変位しながら摺動傾斜面３６−４２によって径方向外側に変位されて解錠位置となる。【選択図】図７PROBLEM TO BE SOLVED: To provide a pipe joint capable of connecting pipe members having a wider range of shapes. SOLUTION: The pipe joint 10 includes a tubular pipe joint main body 12 and a locker 14, and the locker 14 includes a locker main body 16 including a holding portion 26 and a lock protrusion 28, and a locker. A spring member 18 for urging the main body 16 inward in the radial direction is provided. In the connected state, the locking protrusion 28 of the locking element 14 engages with the locking element locking groove 3 of the tube member 1. When the pipe member 1 is displaced forward from this connected state, the locker 14 is pressed forward by the pipe member 1, and the front and rear inward sliding inclined surfaces 36 and 38 of the locker 14 are in front of and forward of the pipe joint body 12. Engage with the rearward outward sliding inclined surfaces 40 and 42, respectively. When the pipe member 1 is further displaced, the locker 14 is displaced outward in the radial direction by the sliding inclined surface 36-42 while being displaced forward together with the pipe member 1 to reach the unlocked position. [Selection diagram] FIG. 7

Description

本発明は、管部材に着脱可能に連結される管継手に関する。 The present invention relates to a pipe joint that is detachably connected to a pipe member.

対応する管部材の外周面に形成された施錠子係止溝に球状の施錠子を係合することにより、該管部材に着脱可能に連結されるようにした管継手において、施錠子をその外側からバネ部材で径方向内側に付勢して施錠子と施錠子係止溝との係合状態を維持するようにしたものが知られている。 In a pipe joint that is detachably connected to a pipe member by engaging a spherical locker with a locker locking groove formed on the outer peripheral surface of the corresponding pipe member, A spring member is urged radially inward to maintain the engagement state between the locking element and the locking element locking groove.

例えば特許文献１及び２に示される管継手においては、管継手の筒状の本体に設けられた施錠子保持孔内に球状の施錠子が径方向で変位可能に保持されており、この施錠子をＣ字状の板バネによって径方向内側に付勢するようになっている。管部材には、先端に向かって縮径するように傾斜した先端傾斜面と、その後方に形成された環状の施錠子係止溝とが形成されており、施錠子係止溝の両側面は径方向外側に向かって開くように傾斜している。このような管部材を管継手に挿入していくと、管部材の先端傾斜面によって施錠子が径方向外側に押圧されるため、施錠子は径方向外側に変位する。さらに挿入して施錠子係止溝が径方向で施錠子と整合する位置となると、施錠子が板バネの付勢力によって径方向内側に変位して施錠子係止溝に係合する。これにより管継手は管部材に連結された連結状態となる。また、連結状態から管部材をある程度以上の力で管継手から引き抜くようにすると、施錠子係止溝の先端側の傾斜した側面によって施錠子が径方向外側に押圧されるため、施錠子は径方向外側に変位する。これにより、施錠子と施錠子係止溝との係合が解除されて、連結状態が解除されるようになっている。 For example, in the pipe joints disclosed in Patent Documents 1 and 2, a spherical locker is held in a locker holding hole provided in a tubular main body of the pipe joint so as to be displaceable in the radial direction. Is urged radially inward by a C-shaped leaf spring. The tube member is formed with a tip inclined surface that is inclined so as to be reduced in diameter toward the tip, and an annular locking element locking groove formed at the rear thereof, and both side surfaces of the locking element locking groove are It is inclined to open outward in the radial direction. When such a pipe member is inserted into the pipe joint, the locking element is pressed radially outward by the inclined end surface of the pipe member, so that the locking element is displaced radially outward. When the locker locking groove is further inserted and positioned in alignment with the locker in the radial direction, the locker is displaced radially inward by the urging force of the leaf spring and engages with the locker locking groove. Thereby, a pipe joint will be in the connection state connected with the pipe member. Further, when the pipe member is pulled out from the pipe joint with a certain level of force from the connected state, the lock element is pressed radially outward by the inclined side surface on the distal end side of the lock element locking groove. Displaces outward in the direction. Thereby, the engagement between the locking element and the locking element locking groove is released, and the connected state is released.

実開平３−１２０８６号公報Japanese Utility Model Publication No. 3-12086 国際公開第２０１７／０９９０８４号International Publication No. 2017/099084

上述の従来の管継手においては、球状の施錠子が径方向に変位可能に保持されており、連結時及び離脱時において対応する管部材に設けられた傾斜面により施錠子を径方向外側に押圧するようになっている。したがって、このような管継手に連結される管部材は、その先端部分に傾斜面が設けられているとともに、施錠子係止溝の少なくとも先端側の側面も傾斜面とされていることが必要となる。しかしながら、連結しようとする管部材が必ずしもこのような構成でない場合があり、その場合には上述の従来の管継手では適切な連結及び離脱ができない虞がある。 In the above-described conventional pipe joint, the spherical locking element is held so as to be displaceable in the radial direction, and the locking element is pressed radially outward by an inclined surface provided in the corresponding pipe member at the time of connection and disengagement. It is supposed to be. Therefore, the pipe member connected to such a pipe joint is required to have an inclined surface at the distal end portion thereof, and at least a side surface on the distal end side of the locking element locking groove to be an inclined surface. Become. However, the pipe member to be connected may not necessarily have such a configuration, and in that case, there is a possibility that appropriate connection and disconnection cannot be performed with the above-described conventional pipe joint.

そこで本発明は、上述の従来技術の問題に鑑みて、より幅広い形状の管部材を連結することが可能となる管継手を提供することを目的とする。 SUMMARY OF THE INVENTION In view of the above-described problems of the prior art, an object of the present invention is to provide a pipe joint that can connect pipe members having a wider shape.

すなわち本発明は、
外周面に施錠子係止溝を有する管部材に着脱可能に連結される管継手であって、
前端開口から後方に延びる流体通路を画定する筒形状を有し、径方向に貫通した施錠子保持孔を有する管継手本体と、
該管継手本体に取り付けられた施錠子であって、該管継手本体の径方向外側に位置する保持部、該保持部から該施錠子保持孔を通って径方向内側に延びる施錠突部、及び該施錠突部及び該保持部を径方向内側に付勢する付勢部を有し、該施錠突部が該管継手本体の内周面から径方向内側に突出して該流体通路内に挿入された該管部材の該施錠子係止溝に係合する施錠位置と、該施錠位置から径方向外側に変位して該施錠突部と該施錠子係止溝との係合が解除される解錠位置との間で該径方向に変位可能とされた施錠子と、
を備え、
互いに対向する該管継手本体の外周面と該施錠子の内側面とのうちの少なくとも一方に前方又は後方に向かって径方向外側に傾斜した摺動傾斜面が形成されており、
該管部材が該流体通路内で該管継手本体に対して該前方又は後方に変位して該施錠位置にある該施錠子の該施錠突部を該前方又は後方に押圧したときに、該施錠子が、該管部材とともに該前方又は後方に変位し該摺動傾斜面において該管継手本体と摺動係合することにより径方向外側に変位して該解錠位置となるようにされた、管継手を提供する。 That is, the present invention
A pipe joint that is detachably connected to a pipe member having a locking element locking groove on the outer peripheral surface,
A pipe joint body having a cylindrical shape defining a fluid passage extending rearward from the front end opening and having a locker retaining hole penetrating in a radial direction;
A locking element attached to the pipe joint body, the holding part positioned on the radially outer side of the pipe joint body, the locking protrusion extending radially inward from the holding part through the locker holding hole, and A biasing portion for biasing the locking projection and the holding portion radially inward; the locking projection protrudes radially inward from the inner peripheral surface of the pipe joint body and is inserted into the fluid passage; Further, the locking position of the tube member engaged with the locking element locking groove, and the engagement between the locking projection and the locking element locking groove being released by displacing radially outward from the locking position. A lock that is displaceable in the radial direction between the lock position and
With
A sliding inclined surface inclined radially outward toward the front or rear is formed on at least one of the outer peripheral surface of the pipe joint body and the inner side surface of the locking element facing each other,
When the pipe member is displaced forward or backward with respect to the pipe joint body in the fluid passage and presses the locking projection of the locking element at the locking position forward or backward, the locking member The child is displaced forward or backward together with the pipe member, and is displaced radially outward by slidingly engaging with the pipe joint body on the sliding inclined surface so as to be in the unlocked position. Provide pipe fittings.

当該管継手においては、管継手本体の外周面と施錠子の内側面とのうちの少なくとも一方に前方又は後方に向かって径方向外側に傾斜した摺動傾斜面が設けられており、施錠子が管部材によって該前方又は後方に押圧されたときに施錠子が同方向に変位しながら摺動傾斜面において管継手本体と摺動して解錠位置に向かって径方向外側に変位するようになっている。すなわち、管部材の連結時又は離脱時における施錠子の径方向外側への変位が、管継手本体との摺動傾斜面での摺動係合により生じるようになっている。そのため、摺動傾斜面が前方に向かって傾斜している場合には、離脱時の施錠子の径方向外側への変位が摺動傾斜面の作用により生じるため、管部材の施錠子保持孔の側面が傾斜面である必要がなくなり、摺動傾斜面が後方に向かって傾斜している場合には、連結時の施錠子の径方向外側への変位が摺動傾斜面の作用により生じるため、管部材の先端部分に傾斜面を設ける必要がなくなる。したがって、当該管継手は、従来の管継手に比べて、より幅広い形状の管部材に対して着脱可能に連結されるようにすることが可能となる。 In the pipe joint, at least one of the outer peripheral surface of the pipe joint body and the inner side surface of the locker is provided with a sliding inclined surface that is inclined radially outward toward the front or rear, and the locker is When pressed forward or rearward by the pipe member, the locking element is displaced in the same direction while sliding with the pipe joint main body on the sliding inclined surface and displaced radially outward toward the unlocked position. ing. That is, the radially outward displacement of the locking element at the time of connecting or detaching the pipe member is caused by sliding engagement on the sliding inclined surface with the pipe joint body. For this reason, when the sliding inclined surface is inclined forward, the radial displacement of the locking element at the time of detachment is caused by the action of the sliding inclined surface. When the side surface is not required to be an inclined surface and the sliding inclined surface is inclined rearward, the displacement of the locking element radially outward at the time of connection is caused by the action of the sliding inclined surface, There is no need to provide an inclined surface at the tip of the tube member. Therefore, the pipe joint can be detachably connected to a pipe member having a wider shape than a conventional pipe joint.

具体的には、
該摺動傾斜面が前方に向かって径方向外側に傾斜しており、
該管部材が連結されて該施錠子が該施錠位置となり該施錠突部が該施錠子係止溝に受け入れられている状態で該管部材を該管継手本体に対して前方に変位させたときに、該施錠子が、該管部材とともに前方に変位し該摺動傾斜面において該管継手本体と摺動係合することにより径方向外側に変位して該解錠位置となるようにすることができる。 In particular,
The sliding inclined surface is inclined radially outward toward the front,
When the pipe member is displaced forward with respect to the pipe joint body in a state where the lock member is in the locked position and the lock projection is received in the lock-engagement groove. Further, the locking element is displaced forward together with the pipe member, and is displaced radially outward by slidingly engaging with the pipe joint main body on the sliding inclined surface so as to be in the unlocked position. Can do.

さらには、
該施錠子保持孔の後方側壁面が該管継手本体の長手軸線に対して略垂直な面とされ、
該管部材が該流体通路内に後方に向かって挿入されたときに、該施錠位置にある該施錠子が該管部材によって該後方側壁面に押し付けられた状態で該管部材によって径方向外側に押圧されることにより、該施錠子が該後方側壁面に沿って該解錠位置にまで径方向外側に変位し、該施錠子係止溝が該施錠突部に対して該径方向で整合する位置となったときに該施錠子が該付勢部の付勢力によって該後方側壁面に沿って該施錠位置に変位するようにすることができる。 Moreover,
The rear side wall surface of the locker holding hole is a surface substantially perpendicular to the longitudinal axis of the pipe joint body,
When the tube member is inserted rearwardly into the fluid passage, the lock member in the locked position is pressed radially outward by the tube member while being pressed against the rear side wall surface by the tube member. When pressed, the locking element is displaced radially outward to the unlocking position along the rear side wall surface, and the locking element locking groove is aligned with the locking projection in the radial direction. When the position is reached, the locking element can be displaced to the locking position along the rear side wall surface by the urging force of the urging portion.

このような構成により、管部材の施錠子係止溝が施錠子の施錠突部に対して径方向で整合する位置となったときに、施錠子が、付勢部の付勢力によって施錠位置にまで一気に変位して、管継手本体や管部材の外周面に衝突するようにすることが可能となる。これにより衝突音や振動が生じることとなり、作業者は連結が完了して施錠子が施錠位置となったことを衝突音や振動によってより容易に認識することができるようになる。 With such a configuration, when the locking element locking groove of the tube member is in a position that is aligned in the radial direction with respect to the locking projection of the locking element, the locking element is moved to the locking position by the urging force of the urging portion. It is possible to displace at a stroke and collide with the outer peripheral surface of the pipe joint main body or the pipe member. As a result, a collision sound or vibration is generated, and the operator can more easily recognize that the connection is completed and the lock is in the locked position by the collision sound or vibration.

好ましくは、該摺動傾斜面が、該施錠子の該内側面における該施錠突部よりも前方側位置に設けられた前方内向摺動傾斜面と該施錠突部よりも後方側位置に設けられた後方内向摺動傾斜面とを有するようにすることができる。 Preferably, the sliding inclined surface is provided at a forward inward sliding inclined surface provided at a position ahead of the locking projection on the inner side surface of the locking element and at a position behind the locking projection. And a rearward inward sliding inclined surface.

このような構成により、施錠子が施錠突部の前後で管継手本体に支持されるようになり、施錠子が前方又は後方に傾くことを防止して施錠子の姿勢を安定させることが可能となる。これにより、施錠子の変位がより円滑に行なわれるようにすることができる。 With such a configuration, the locking element is supported by the pipe joint main body before and after the locking projection, and it is possible to prevent the locking element from tilting forward or backward and to stabilize the posture of the locking element. Become. Thereby, the locker can be displaced more smoothly.

またこの場合には、
該摺動傾斜面が、該管継手本体の該外周面における該施錠子保持孔よりも前方側位置に設けられた前方外向摺動傾斜面と該施錠子保持孔よりも後方側位置に設けられた後方外向摺動傾斜面とをさらに有し、
該施錠位置にある該施錠子が該前方又は後方に変位したときに、該施錠子の前方内向摺動傾斜面と該管継手本体の前方外向摺動傾斜面とが摺動係合し、該施錠子の後方内向摺動傾斜面と該管継手本体の後方外向摺動傾斜面とが摺動係合することにより、該施錠子が径方向外側に変位して該施錠位置となるようにすることができる。 In this case,
The sliding inclined surface is provided at a forward outward sliding inclined surface provided at a position forward of the locking element holding hole on the outer peripheral surface of the pipe joint body and at a rear side position of the locking element holding hole. And further having a rearward outward sliding inclined surface,
When the locking element at the locking position is displaced forward or backward, the forward inward sliding inclined surface of the locking element and the forward outward sliding inclined surface of the pipe joint body are in sliding engagement, By slidingly engaging the rearward inward sliding inclined surface of the locking element and the rearward outward sliding inclined surface of the pipe joint body, the locking element is displaced radially outward to be in the locked position. be able to.

このような構成により、施錠子と管継手本体とが面同士で摺動係合するようにできるため、管継手本体に対する施錠子の摺動がより安定する。 With such a configuration, the locking element and the pipe joint main body can be slidably engaged with each other, so that the locking element slides relative to the pipe joint main body more stably.

具体的には、
該施錠子保持孔が、該管継手本体の周方向に延びる長孔であり、
該施錠子の該保持部が、該管継手本体の該外周面に沿って該周方向に湾曲して延びる弧状部分とされ、該施錠突部が該管継手本体の長手軸線に対して略垂直な平面に沿って該保持部の内側面から径方向内側に延びる板状部分とすることができる。 In particular,
The locker holding hole is a long hole extending in the circumferential direction of the pipe joint body,
The holding portion of the locking element is an arc-shaped portion extending in the circumferential direction along the outer peripheral surface of the pipe joint body, and the locking projection is substantially perpendicular to the longitudinal axis of the pipe joint body. A plate-like portion extending radially inward from the inner surface of the holding portion along a flat surface can be used.

さらには、
該施錠子が、該施錠突部と該保持部とを有する施錠子本体と、該付勢部を有し該施錠子本体とは別体とされたバネ部材とを有し、該バネ部材が該施錠子本体の外側面に沿って該管継手本体の周方向に延びる中央部と、該中央部の該周方向での両端からそれぞれ該径方向内側に向かって互いに近づいていくように延びて該管継手本体の外周面に係合する係合端部とを有し、該施錠子本体が該バネ部材によって該管継手本体に対して保持されるようにすることができる。 Moreover,
The locking element includes a locking element body having the locking protrusion and the holding part, and a spring member having the biasing part and separated from the locking element body. A central portion extending in the circumferential direction of the pipe joint main body along the outer side surface of the lock body, and extending so as to approach each other radially inward from both ends of the central portion in the circumferential direction. An engagement end portion that engages with the outer peripheral surface of the pipe joint body, and the lock body can be held against the pipe joint body by the spring member.

以下、本発明に係る管継手の実施形態を添付図面に基づき説明する。 DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a pipe joint according to the present invention will be described with reference to the accompanying drawings.

本発明の一実施形態に係る管継手の外観斜視図である。It is an appearance perspective view of a pipe joint concerning one embodiment of the present invention. 図１の管継手の分解斜視図である。It is a disassembled perspective view of the pipe joint of FIG. 図１の管継手の非連結状態における側面断面図である。It is side surface sectional drawing in the non-connecting state of the pipe joint of FIG. 図１の管継手の連結途中の第１の状態を示す側面断面図である。It is side surface sectional drawing which shows the 1st state in the middle of the connection of the pipe joint of FIG. 図１の管継手の連結途中の第２の状態を示す側面断面図である。It is side surface sectional drawing which shows the 2nd state in the middle of the connection of the pipe joint of FIG. 図１の管継手の連結状態における側面断面図である。It is side surface sectional drawing in the connection state of the pipe joint of FIG. 図１の管継手の離脱途中の第１の状態を示す側面断面図である。It is side surface sectional drawing which shows the 1st state in the middle of detachment | leave of the pipe joint of FIG. 図１の管継手の離脱途中の第２の状態を示す側面断面図である。It is side surface sectional drawing which shows the 2nd state in the middle of detachment | leave of the pipe joint of FIG.

本発明の一実施形態に係る管継手１０は、図１乃至図３に示すように、筒形状の管継手本体１２と、管継手本体１２に取り付けられた２つの施錠子１４とを備える。各施錠子１４は、別体として形成された、施錠子本体１６と、施錠子本体１６を管継手本体１２に対して保持して径方向内側に付勢するバネ部材（付勢部）１８とからなる。 The pipe joint 10 which concerns on one Embodiment of this invention is provided with the cylindrical pipe joint main body 12 and the two locking elements 14 attached to the pipe joint main body 12 as shown in FIG. Each locking element 14 is formed as a separate locking element main body 16, and a spring member (biasing part) 18 that holds the locking element main body 16 against the pipe joint main body 12 and urges it radially inward. Consists of.

当該管継手１０に着脱可能に連結される管部材１は、図３に示すように、その外周面２に環状の施錠子係止溝３を有する。この施錠子係止溝３の側面４は、管部材１の長手軸線Ｌに対して垂直な面となっている。また、管部材１は、管部材１の先端６に向かって縮径するように傾斜した先端傾斜面５を有する。 As shown in FIG. 3, the pipe member 1 that is detachably connected to the pipe joint 10 has an annular locking element locking groove 3 on its outer peripheral surface 2. The side surface 4 of the locker locking groove 3 is a surface perpendicular to the longitudinal axis L of the tube member 1. Further, the tube member 1 has a tip inclined surface 5 that is inclined so as to reduce in diameter toward the tip 6 of the tube member 1.

管継手本体１２は、前端開口２０から後方（図３で見て左方）に延びる流体通路２２を画定し、径方向に貫通した施錠子保持孔２４を有する。施錠子保持孔２４は図２に示すように、管継手本体１２の周方向に延びる長孔となっている。また、施錠子保持孔２４の前方側壁面２４ａ及び後方側壁面２４ｂは管継手本体１２の長手軸線Ｌに対して略垂直な面となっている。 The pipe joint body 12 defines a fluid passage 22 extending rearward (leftward as viewed in FIG. 3) from the front end opening 20 and has a locker retaining hole 24 penetrating in the radial direction. As shown in FIG. 2, the locker holding hole 24 is a long hole extending in the circumferential direction of the pipe joint body 12. Further, the front side wall surface 24 a and the rear side wall surface 24 b of the locker holding hole 24 are substantially perpendicular to the longitudinal axis L of the pipe joint body 12.

施錠子１４の施錠子本体１６は、管継手本体１２の外周面１２ａに沿って周方向に湾曲して延びる弧状の保持部２６と、管継手本体１２の長手軸線Ｌに対して垂直な平面に沿って保持部２６の内側面２６ａから径方向内側に板状に延びた施錠突部２８とを有する。施錠子１４が管継手本体１２に取り付けられた状態において、施錠突部２８は施錠子保持孔２４を通って径方向内側に延びる。バネ部材１８は、施錠子本体１６の外側面１６ａに沿って周方向に延びる中央部３０と、中央部３０の周方向での両端からそれぞれ径方向内側に向かって互いに近づいていくように延びる係合端部３２とを有する。施錠子本体１６の外側面１６ａには周方向に延びる凹部１６ｂが形成されており、バネ部材１８の中央部３０はこの凹部１６ｂ内に配置されている。これにより、バネ部材１８が長手軸線Ｌの方向で施錠子本体１６から外れないようになっている。管継手本体１２の外周面１２ａには平らなバネ係止面３４が形成されており、バネ部材１８の係合端部３２がバネ係止面３４にそれぞれ係合して管継手本体１２を挟むようになっている。バネ係止面３４と係合端部３２は長手軸線Ｌに平行となっているため、バネ部材１８はバネ係止面３４に沿って長手軸線Ｌの方向に変位可能である。施錠子１４は、施錠突部２８が管継手本体１２の内周面１２ｂから径方向内側に突出している施錠位置（図３、図６）と施錠位置から径方向外側に変位した解錠位置（図５、図８）との間で径方向に変位可能となっており、バネ部材１８により施錠位置に向かって径方向内側に付勢されている。 The locking element body 16 of the locking element 14 has an arcuate holding portion 26 that is curved and extends in the circumferential direction along the outer peripheral surface 12 a of the pipe coupling body 12, and a plane perpendicular to the longitudinal axis L of the pipe coupling body 12. And a locking protrusion 28 extending in a plate shape radially inward from the inner side surface 26a of the holding portion 26. In a state where the lock 14 is attached to the pipe joint body 12, the lock protrusion 28 extends radially inward through the lock holding hole 24. The spring member 18 includes a central portion 30 extending in the circumferential direction along the outer side surface 16a of the locker main body 16, and a member extending so as to approach each other radially inward from both ends in the circumferential direction of the central portion 30. And an end portion 32. A concave portion 16b extending in the circumferential direction is formed on the outer surface 16a of the locker main body 16, and the central portion 30 of the spring member 18 is disposed in the concave portion 16b. This prevents the spring member 18 from being detached from the lock body 16 in the direction of the longitudinal axis L. A flat spring locking surface 34 is formed on the outer peripheral surface 12 a of the pipe joint main body 12, and the engagement end portions 32 of the spring members 18 engage with the spring locking surface 34 to sandwich the pipe coupling main body 12. It is like that. Since the spring locking surface 34 and the engaging end 32 are parallel to the longitudinal axis L, the spring member 18 can be displaced along the spring locking surface 34 in the direction of the longitudinal axis L. The locking element 14 includes a locking position where the locking projection 28 protrudes radially inward from the inner peripheral surface 12b of the pipe joint body 12 (FIGS. 3 and 6), and an unlocking position where the locking position is displaced radially outward from the locking position ( 5 and FIG. 8) can be displaced in the radial direction, and is urged radially inward by the spring member 18 toward the locking position.

施錠子１４の保持部２６の内側面２６ａにおける施錠突部２８よりも前方側位置（図で見て右側位置）には前方内向摺動傾斜面３６が設けられており、施錠突部２８よりも後方側位置（図で見て左側位置）には後方内向摺動傾斜面３８が設けられている。これら前方内向摺動傾斜面３６と後方内向摺動傾斜面３８とは、互いに同一角度で前方に向かって径方向外側に傾斜している。また、管継手本体１２の外周面１２ａにおける施錠子保持孔２４よりも前方側位置には前方外向摺動傾斜面４０が設けられており、施錠子保持孔２４よりも後方位置には後方外向摺動傾斜面４２が設けられている。これら前方外向摺動傾斜面４０と後方内向摺動傾斜面３８は、施錠子１４の前方内向摺動傾斜面３６及び後方内向摺動傾斜面３８と同一の角度で前方に向かって径方向外側に傾斜している。前方内向摺動傾斜面３６と前方外向摺動傾斜面４０とは互いに対向する位置にあり、後方内向摺動傾斜面３８と後方外向摺動傾斜面４２とは互いに対向する位置にある。 A forward inward sliding inclined surface 36 is provided at a position ahead of the locking projection 28 on the inner side surface 26 a of the holding portion 26 of the locking element 14 (right position in the drawing), and more than the locking projection 28. A rearward inward sliding inclined surface 38 is provided at the rear side position (left side position in the figure). The front inward sliding inclined surface 36 and the rear inward sliding inclined surface 38 are inclined radially outward toward the front at the same angle. Further, a forward outward sliding inclined surface 40 is provided at a position on the outer peripheral surface 12 a of the pipe joint main body 12 in front of the locking element holding hole 24, and at a rear position of the locking element holding hole 24, backward outward sliding. A dynamic inclined surface 42 is provided. The forward outward sliding inclined surface 40 and the backward inward sliding inclined surface 38 are radially outward toward the front at the same angle as the forward inward sliding inclined surface 36 and the backward inward sliding inclined surface 38 of the lock 14. Inclined. The front inward sliding inclined surface 36 and the front outward sliding inclined surface 40 are in positions facing each other, and the rear inward sliding inclined surface 38 and the rear outward sliding inclined surface 42 are in positions facing each other.

図３の非連結状態から管部材１を管継手本体１２の流体通路２２内に挿入していくと、管部材１の先端傾斜面５が施錠位置にある施錠子本体１６の施錠突部２８に係合し、施錠子本体１６は後方に押圧される。そうすると施錠子本体１６は管部材１とともに後方に変位して施錠突部２８が施錠子保持孔２４の後方側壁面２４ｂに押し付けられ、後方への更なる変位が阻止された状態となる（図４）。さらに管部材１が挿入されると、施錠子本体１６は管部材１の先端傾斜面５によって径方向外側に押圧されて、施錠子保持孔２４の後方側壁面２４ｂに沿ってバネ部材１８の付勢力に抗して径方向外側に変位する。このようにして施錠子１４は径方向外側に変位されて解錠位置となる（図５）。そして、施錠子係止溝３が施錠突部２８に対して径方向で整合する位置となると、施錠子本体１６はバネ部材１８の付勢力によって後方側壁面２４ｂに沿って径方向内側に一気に変位する。これにより施錠突部２８が施錠子係止溝３内に受け入れられた状態となり、施錠子１４は施錠位置となる（図６）。解錠位置から施錠位置にまで一気に変位した施錠子１４は、内側面２６ａにおいて管継手本体１２の外周面１２ａに衝突する。これにより衝突音や振動が生じる。このような衝突音や振動は、管部材１の施錠子係止溝３の側面４が傾斜していない垂直な面であるときに特に大きく生じる。作業者はこの衝突音や振動により、施錠子１４が施錠位置となり連結が完了したことを容易に認識することができる。従来の管継手においては、施錠子が球状でありまた施錠子係止溝の側面が大きく傾斜しているため連結時の施錠子やバネ部材の径方向での変位は比較的に緩やかになる。そのため当該管継手１０のような衝突音や振動は生じにくい。なお連結状態においては、管継手本体１２の内周面１２ｂに取り付けられたシール部材４４により、管継手本体１２と管部材１との間が密封係合されている。 When the pipe member 1 is inserted into the fluid passage 22 of the pipe joint main body 12 from the unconnected state of FIG. 3, the tip inclined surface 5 of the pipe member 1 is placed on the locking projection 28 of the lock main body 16 in the locking position. The lock body 16 is pushed rearward. Then, the lock body 16 is displaced rearward together with the tube member 1, and the lock projection 28 is pressed against the rear side wall surface 24b of the lock holder holding hole 24, thereby preventing further rearward displacement (FIG. 4). ). When the tube member 1 is further inserted, the lock body 16 is pressed radially outward by the tip inclined surface 5 of the tube member 1, and the spring member 18 is attached along the rear side wall surface 24 b of the lock element holding hole 24. Displaces radially outward against the force. In this way, the lock 14 is displaced radially outward to the unlock position (FIG. 5). When the locking element locking groove 3 is aligned with the locking projection 28 in the radial direction, the locking element body 16 is displaced radially inward along the rear side wall surface 24b by the biasing force of the spring member 18. To do. As a result, the locking projection 28 is received in the locking element locking groove 3, and the locking element 14 is in the locked position (FIG. 6). The locking element 14 displaced at a stroke from the unlocking position to the locking position collides with the outer peripheral surface 12a of the pipe joint main body 12 on the inner side surface 26a. This causes collision noise and vibration. Such a collision sound or vibration is particularly large when the side surface 4 of the locking element locking groove 3 of the tube member 1 is a vertical surface that is not inclined. The operator can easily recognize that the locking element 14 is in the locking position and the connection is completed by the collision sound and vibration. In the conventional pipe joint, since the locking element is spherical and the side surface of the locking element locking groove is greatly inclined, the displacement in the radial direction of the locking element and the spring member at the time of connection is relatively gentle. Therefore, collision noise and vibration unlike the pipe joint 10 are hardly generated. In the connected state, the pipe joint main body 12 and the pipe member 1 are hermetically engaged by the seal member 44 attached to the inner peripheral surface 12b of the pipe joint main body 12.

図６の連結状態から管部材１を管継手本体１２に対して前方に変位させると、施錠子係止溝３に係合されている施錠子１４は管部材１によって前方に押圧され、管部材１とともに前方に変位する。施錠子１４が前方に変位すると、施錠子１４の前方内向摺動傾斜面３６と管継手本体１２の前方外向摺動傾斜面４０とが係合し、施錠子１４の後方内向摺動傾斜面３８と管継手本体１２の後方外向摺動傾斜面４２とが係合する。管部材１をある程度以上の力でさらに前方に引くと、前方内向摺動傾斜面３６と前方外向摺動傾斜面４０、及び後方内向摺動傾斜面３８と後方外向摺動傾斜面４２がそれぞれ摺動係合することにより、施錠子１４は管部材１とともに前方に変位しながら、各摺動傾斜面３６−４２の傾斜に沿ってバネ部材１８の付勢力に抗して径方向外側にも変位していく（図７）。施錠突部２８が施錠子係止溝３の外側に出て施錠子１４が解錠位置となると、施錠突部２８と施錠子係止溝３との係合が解除される（図８）。管部材１をさらに前方に変位させることにより管部材１は当該管継手１０から完全に離脱される。 When the pipe member 1 is displaced forward with respect to the pipe joint main body 12 from the connected state of FIG. 6, the lock element 14 engaged with the lock element locking groove 3 is pressed forward by the pipe member 1, and the pipe member 1 and forward displacement. When the locking element 14 is displaced forward, the forward inward sliding inclined surface 36 of the locking element 14 and the forward outward sliding inclined surface 40 of the pipe joint body 12 are engaged, and the backward inward sliding inclined surface 38 of the locking element 14 is engaged. And the rear outward sliding inclined surface 42 of the pipe joint body 12 are engaged. When the tube member 1 is pulled further forward with a certain level of force, the front inward sliding inclined surface 36 and the front outward sliding inclined surface 40, and the rear inward sliding inclined surface 38 and the rear outward sliding inclined surface 42 are slid. By being engaged dynamically, the lock 14 is displaced forward together with the tube member 1, and is also displaced radially outward against the biasing force of the spring member 18 along the inclination of each sliding inclined surface 36-42. (Fig. 7). When the locking protrusion 28 comes out of the locking element locking groove 3 and the locking element 14 is in the unlocked position, the engagement between the locking protrusion 28 and the locking element locking groove 3 is released (FIG. 8). By displacing the pipe member 1 further forward, the pipe member 1 is completely detached from the pipe joint 10.

当該管継手１０においては、連結状態から管部材１を管継手本体１２に対して前方に変位させたときに、施錠子１４は各摺動傾斜面３６−４２において管継手本体１２と摺動係合することにより径方向外側に変位して解錠位置となるようになっている。そのため、管部材１の施錠子係止溝３の側面４が傾斜している必要はなく、管部材１を簡易な構造とすることができる。また、管部材１を連結する際に施錠子１４が解錠位置から施錠位置に一気に変位することにより衝突音や振動が生じるようにもなっているため、連結が完了したことを作業者が容易に認識することができる。 In the pipe joint 10, when the pipe member 1 is displaced forward with respect to the pipe joint main body 12 from the connected state, the lock 14 is in sliding contact with the pipe joint main body 12 at each sliding inclined surface 36-42. By joining, it is displaced radially outward and becomes an unlocked position. Therefore, the side surface 4 of the locking element locking groove 3 of the tube member 1 does not need to be inclined, and the tube member 1 can have a simple structure. Further, when the tube member 1 is connected, the locking element 14 is displaced from the unlocked position to the locked position at once, so that a collision sound and vibration are generated, so that the operator can easily understand that the connection is completed. Can be recognized.

以上に本発明の実施形態について説明をしたが、本発明はこれら実施形態に限定されるものではない。例えば、摺動傾斜面は、施錠子と管継手本体とのうちの一方にのみ設けられてもいて良いし、施錠突部又は施錠子保持孔に対する前方側位置と後方側位置とのうちの一方の側にのみ設けられていても良い。また摺動傾斜面を後方に向かって径方向外側に傾斜するような面として、管部材を挿入する際に施錠子が摺動傾斜面において管継手部材と摺動係合して、施錠子が後方に変位しながら径方向外側に変位して解錠位置となるように構成してもよい。この場合には、管部材の先端に傾斜面を設ける必要がなくなる。さらには、上記実施形態のような前方に向かって径方向外側に傾斜した摺動傾斜面と、上述のような後方に向かって径方向外側に傾斜した摺動傾斜面とを両方とも設けても良い。この場合には、管部材の施錠子係止溝の側面が傾斜している必要も先端が傾斜面となっている必要もなくなる。施錠子のバネ部材は、複数の施錠子本体を同時に径方向内側に付勢するように該複数の施錠子本体の周りに配置されたＣ字状または環状の部材としてもよい。また施錠子は、施錠子本体とバネ部材とが一体の部材として形成されたものとしても良い。 Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments. For example, the sliding inclined surface may be provided only on one of the locking element and the pipe joint body, or one of the front side position and the rear side position with respect to the locking protrusion or the locking element holding hole. It may be provided only on the side. In addition, the sliding inclined surface is inclined to the outside in the radial direction toward the rear, and when the pipe member is inserted, the locking element is slidably engaged with the pipe joint member on the sliding inclined surface, so that the locking element is You may comprise so that it may change to a radial direction outer side, and may become an unlocking position, displacing back. In this case, it is not necessary to provide an inclined surface at the tip of the tube member. Further, both the sliding inclined surface inclined radially outward toward the front as in the above embodiment and the sliding inclined surface inclined radially outward toward the rear as described above may be provided. good. In this case, it is not necessary for the side surface of the locking element locking groove of the tube member to be inclined and the tip end to be an inclined surface. The spring member of the locker may be a C-shaped or annular member arranged around the plurality of locker main bodies so as to simultaneously bias the plurality of locker main bodies radially inward. Further, the locker may be formed as an integral member of the locker main body and the spring member.

１管部材
２外周面
３施錠子係止溝
４側面
５先端傾斜面
６先端
１０管継手
１２管継手本体
１２ａ外周面
１２ｂ内周面
１４施錠子
１６施錠子本体
１６ａ外側面
１６ｂ凹部
１８バネ部材（付勢部）
２０前端開口
２２流体通路
２４施錠子保持孔
２４ａ前方側壁面
２４ｂ後方側壁面
２６保持部
２６ａ内側面
２８施錠突部
３０中央部
３２係合端部
３４バネ係止面
３６前方内向摺動傾斜面
３８後方内向摺動傾斜面
４０前方外向摺動傾斜面
４２後方外向摺動傾斜面
４４シール部材
Ｌ長手軸線 DESCRIPTION OF SYMBOLS 1 Pipe member 2 Outer peripheral surface 3 Locking element locking groove 4 Side surface 5 Tip inclined surface 6 Tip 10 Pipe joint 12 Pipe joint main body 12a Outer peripheral surface 12b Inner peripheral surface 14 Locking child 16 Locking child main body 16a Outer side surface 16b Recess 18 Spring member ( Energizing department)
20 Front end opening 22 Fluid passage 24 Locking element holding hole 24a Front side wall face 24b Rear side wall face 26 Holding part 26a Inner side face 28 Locking projection part 30 Central part 32 Engagement end part 34 Spring locking face 36 Front inward sliding inclined surface 38 Rear inward sliding inclined surface 40 Front outward sliding inclined surface 42 Rear outward sliding inclined surface 44 Seal member L Longitudinal axis

Claims

A pipe joint that is detachably connected to a pipe member having a locking element locking groove on the outer peripheral surface,
A pipe joint body having a cylindrical shape defining a fluid passage extending rearward from the front end opening and having a locker retaining hole penetrating in a radial direction;
A locking element attached to the pipe joint body, the holding part positioned on the radially outer side of the pipe joint body, the locking protrusion extending radially inward from the holding part through the locker holding hole, and A biasing portion for biasing the locking projection and the holding portion radially inward; the locking projection protrudes radially inward from the inner peripheral surface of the pipe joint body and is inserted into the fluid passage; Further, the locking position of the tube member engaged with the locking element locking groove, and the engagement between the locking projection and the locking element locking groove being released by displacing radially outward from the locking position. A lock that is displaceable in the radial direction between the lock position and
With
A sliding inclined surface inclined radially outward toward the front or rear is formed on at least one of the outer peripheral surface of the pipe joint body and the inner side surface of the locking element facing each other,
When the pipe member is displaced forward or backward with respect to the pipe joint body in the fluid passage and presses the locking projection of the locking element at the locking position forward or backward, the locking member The child is displaced forward or backward together with the pipe member, and is displaced radially outward by slidingly engaging with the pipe joint body on the sliding inclined surface so as to be in the unlocked position. Pipe fittings.

The sliding inclined surface is inclined radially outward toward the front,
When the pipe member is displaced forward with respect to the pipe joint body in a state where the lock member is in the locked position and the lock projection is received in the lock-engagement groove. Further, the locking element is displaced forward together with the pipe member, and is displaced radially outward by slidingly engaging with the pipe joint main body on the sliding inclined surface to be in the unlocked position. The pipe joint according to claim 1.

The rear side wall surface of the locker holding hole is a surface substantially perpendicular to the longitudinal axis of the pipe joint body,
When the tube member is inserted rearwardly into the fluid passage, the lock member in the locked position is pressed radially outward by the tube member while being pressed against the rear side wall surface by the tube member. When pressed, the locking element is displaced radially outward to the unlocking position along the rear side wall surface, and the locking element locking groove is aligned with the locking projection in the radial direction. The pipe joint according to claim 2, wherein when the locking position is reached, the locking element is displaced to the locking position along the rear side wall surface by the biasing force of the biasing portion.

The sliding inclined surface is a forward inward sliding inclined surface provided at a position ahead of the locking projection on the inner side surface of the locking element and a rearward inward direction provided at a position behind the locking projection. The pipe joint according to any one of claims 1 to 3, comprising a sliding inclined surface.

The sliding inclined surface is provided at a forward outward sliding inclined surface provided at a position forward of the locking element holding hole on the outer peripheral surface of the pipe joint body and at a rear side position of the locking element holding hole. And further having a rearward outward sliding inclined surface,
When the locking element at the locking position is displaced forward or backward, the forward inward sliding inclined surface of the locking element and the forward outward sliding inclined surface of the pipe joint body are in sliding engagement, By slidingly engaging the rearward inward sliding inclined surface of the locking element and the rearward outward sliding inclined surface of the pipe joint body, the locking element is displaced radially outward to become the locking position. The pipe joint according to claim 4.

The locker holding hole is a long hole extending in the circumferential direction of the pipe joint body,
The holding portion of the locking element is an arc-shaped portion extending in the circumferential direction along the outer peripheral surface of the pipe joint body, and the locking projection is substantially perpendicular to the longitudinal axis of the pipe joint body. The pipe joint according to any one of claims 1 to 5, wherein the pipe joint is a plate-like portion extending radially inward from the inner side surface of the holding portion along a flat surface.

The locking element includes a locking element body having the locking protrusion and the holding part, and a spring member having the biasing part and separated from the locking element body. A central portion extending in the circumferential direction of the pipe joint main body along the outer side surface of the lock body, and extending so as to approach each other radially inward from both ends of the central portion in the circumferential direction. The engagement end portion that engages with the outer peripheral surface of the pipe joint main body, and the lock main body is held by the spring member with respect to the pipe joint main body. The pipe joint according to any one of the above.