JP3002168B2 - Pipe fittings - Google Patents
Pipe fittingsInfo
- Publication number
- JP3002168B2 JP3002168B2 JP10003354A JP335498A JP3002168B2 JP 3002168 B2 JP3002168 B2 JP 3002168B2 JP 10003354 A JP10003354 A JP 10003354A JP 335498 A JP335498 A JP 335498A JP 3002168 B2 JP3002168 B2 JP 3002168B2
- Authority
- JP
- Japan
- Prior art keywords
- locking piece
- engagement
- release position
- joint body
- piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、冷熱空調機に対す
る冷媒ガス充填用機器の接続、吸水・給湯用配管、ガス
配管などの配管に際して、相手側の雄ネジ部にワンタッ
チ接続できるようにした管継手に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe which can be connected with a male screw part on the other side by one-touch when connecting refrigerant gas filling equipment to a cold air conditioner, piping for water absorption / hot water supply, and gas piping. It relates to a joint.
【０００２】[0002]
【従来の技術】この種の管継手として、相手側筒状部材
の雄ネジ状接続部に対して、内面に雌ネジ部が形成され
ている係止片を係合させることにより接続するようにし
たものがある。これを図５及び図６を参照して説明する
と、管継手Ａは係止片２を筒状の継手本体１の先端に拡
開変位可能に軸支してなり、常には、図５に示すように
スライダ３により係止片２が閉じた状態にロックされて
いるが、相手側筒状部材Ｂに接続するときには、図６に
示すようにスライダ３を後退させてロック解除する。す
ると、係止片２が解除バネ４の付勢により拡開するの
で、この状態で相手側筒状部材Ｂの雄ねじ状接続部７を
挿入し、挿入したらスライダ３から手を離す。すると、
復帰バネ５によりスライダ３が係止片２を閉じ方向へ変
位させ、雌ネジ部６と雄ネジ状接続部７が係合する。こ
れにより、相手側筒状部材Ｂとの接続状態にロックされ
る。2. Description of the Related Art A pipe joint of this kind is connected to a male threaded connecting portion of a mating cylindrical member by engaging a locking piece having an internal thread formed on an inner surface thereof. There is something. This will be described with reference to FIGS. 5 and 6. In the pipe joint A, the locking piece 2 is rotatably supported at the tip of the tubular joint body 1 so as to be able to expand and displace, and is always shown in FIG. The locking piece 2 is locked in a closed state by the slider 3 as described above, but when connecting to the mating cylindrical member B, the slider 3 is retracted as shown in FIG. Then, since the locking piece 2 is expanded by the urging of the release spring 4, the male threaded connection portion 7 of the mating cylindrical member B is inserted in this state, and the hand is released from the slider 3 when inserted. Then
The return spring 5 causes the slider 3 to displace the locking piece 2 in the closing direction, so that the female screw portion 6 and the male screw connection portion 7 are engaged. This locks the connection state with the mating cylindrical member B.
【０００３】[0003]
【発明が解決しようとする課題】上記の管継手Ａでは、
相手側筒状部材Ｂの挿入時に雌ネジ部６を雄ネジ状接続
部７と干渉しないように外側へ退避させる必要がある
が、係止片２が支持軸８を中心として傾動変位するよう
になっていたため、雌ネジ部６の支持軸８から遠いネジ
山の退避ストロークが必要以上に大きくなってしまい、
その結果管継手Ａ全体の外径寸法が大きくなる。もし、
支持軸８から遠いネジ山の退避ストロークを小さくしよ
うとすると、雌ネジ部６から支持軸８までの距離を大き
くしなければならないため、今度は軸方向の長さが大き
くなってしまう。In the above-mentioned pipe joint A,
When inserting the mating cylindrical member B, it is necessary to retreat the female screw portion 6 to the outside so as not to interfere with the male screw-shaped connection portion 7, but the locking piece 2 is tilted and displaced about the support shaft 8. Therefore, the retreat stroke of the screw thread far from the support shaft 8 of the female screw portion 6 becomes unnecessarily large,
As a result, the outer diameter of the entire pipe joint A increases. if,
In order to reduce the retraction stroke of the thread far from the support shaft 8, the distance from the female screw portion 6 to the support shaft 8 must be increased, so that the axial length is increased.
【０００４】また、管継手Ａと相手側筒状部材Ｂとの係
合力を高めるためには、雌ネジ部６と雄ネジ状接続部７
との係合領域を全体として周方向に広く確保することが
必要である。ところが、係止片２が傾動変位する従来の
管継手Ａでは、１個の係止片２の周方向寸法を大きくす
ると、雌ねじ状接続部７の弧の中央部の傾動軌跡と両端
部の傾動軌跡との差が大きくなって雄ネジ状接続部７と
の係合時に干渉してしまう。そのため、１個の係止片２
の周方向寸法を狭くし、係止片２の数を増やすことで雄
ネジ状接続部７との係合領域を広く確保している。しか
し、係止片２の数を増やすと、継手本体１の周方向にお
ける係止片２同士の間隔が狭くなるため、継手本体１の
強度低下を招くとともに、構造が複雑になって製造コス
トの増大を招く欠点がある。本願発明は上記事情に鑑み
て創案され、小型化を図るとともに強度低下とコストア
ップを回避することを目的としている。In order to increase the engaging force between the pipe joint A and the mating cylindrical member B, the female screw portion 6 and the male screw connection portion 7 are required.
It is necessary to secure a wide engagement region with the whole in the circumferential direction. However, in the conventional pipe joint A in which the locking pieces 2 are tilted and displaced, when the circumferential dimension of one locking piece 2 is increased, the tilting locus of the center of the arc of the female screw connection portion 7 and the tilting of both ends are increased. The difference from the trajectory becomes large and interferes with the engagement with the male screw connection portion 7. Therefore, one locking piece 2
By increasing the number of the locking pieces 2 by narrowing the circumferential dimension of, the engagement area with the male screw connection portion 7 is widened. However, when the number of the locking pieces 2 is increased, the interval between the locking pieces 2 in the circumferential direction of the joint main body 1 is reduced, so that the strength of the joint main body 1 is reduced, and the structure becomes complicated and the manufacturing cost is reduced. There is a disadvantage that causes an increase. The present invention has been made in view of the above circumstances, and has an object to reduce the size and avoid a decrease in strength and an increase in cost.
【０００５】[0005]
【課題を解決するための手段】請求項１の発明は、相手
側筒状部材の雄ネジ状接続部が挿抜される筒状の継手本
体と、内面に雌ネジ部が形成され、その雌ネジ部を前記
雄ネジ状接続部へ係合させる係合位置と前記雄ネジ状接
続部から解離させる解除位置との間で変位する係止片と
を備えてなり、前記係止片が前記係合位置に変位するこ
とにより前記相手側筒状部材との接続状態に保持される
とともに、前記係止片が前記解除位置に変位することに
より前記雄ネジ状接続部の挿抜を可能とするものであっ
て、前記係止片は、前記継手本体に形成した切欠部内に
収容されているとともに、この切欠部内の軸線方向にお
ける前後両面に摺接しつつ前記係合位置と前記解除位置
との間での径方向の平行移動を可能とされており、前記
雄ねじ状接続部の前記継手本体への挿入動作に伴い、規
制部を軸方向へ変位させつつ前記係止片の外周に対して
軸方向の所定領域に亘って宛うことによりその係止片を
前記解除位置側への変位規制状態にロックするロック機
構を備えている構成とした。According to a first aspect of the present invention, there is provided a tubular joint body into which a male threaded connecting portion of a mating tubular member is inserted and withdrawn, and a female threaded portion formed on an inner surface, and the female threaded portion is formed. And a locking piece displaced between an engagement position for engaging the portion with the male threaded connection portion and a release position for disengaging from the male threaded connection portion, wherein the locking piece is Displaced to a position, the connection state with the mating cylindrical member is maintained, and the engagement piece is displaced to the release position to enable insertion and removal of the male threaded connection portion. The locking piece is housed in a notch formed in the joint main body, and has a diameter between the engagement position and the release position while sliding on both front and rear surfaces in the axial direction in the notch. are capable of parallel movement direction, the
In accordance with the insertion of the male threaded connection into the joint body,
While the displacement portion is displaced in the axial direction,
Addressing the locking piece by addressing it over a predetermined area in the axial direction
Locking machine that locks in the displacement restriction state to the release position side
It was configured to have a structure .
【０００６】請求項２の発明は、前記係止片に設けた被
ガイドピンと前記継手本体に設けたガイド溝との係合に
より、前記係止片は、前記係合位置と前記解除位置との
間の変位を許容されているとともにその変位方向と交差
する方向への遊動を規制されており、前記継手本体と前
記係止片との間には、前記係止片を前記解除位置方向へ
付勢する一対のスプリングが前記ガイド溝を挟んで対称
に設けられている請求項１のものにおいて、前記切欠部
が前記継手本体の外周に開口され、前記ガイド溝が前記
継手本体の前端面に開口され、前記被ガイドピンが前記
係止片の前面に螺合され、前記スプリングによって付勢
される前記係止片が、前記被ガイドピンを前記ガイド溝
の外周側端部に当接させることで前記解除位置に保持さ
れる構成とした。According to a second aspect of the present invention, the engagement piece is moved between the engagement position and the release position by engagement of a guided pin provided on the engagement piece with a guide groove provided on the joint body. Between the joint body and the locking piece, the locking piece is attached in the direction of the release position between the joint body and the locking piece. 2. The notch according to claim 1, wherein a pair of biasing springs are provided symmetrically with respect to the guide groove.
Is opened on the outer periphery of the joint body, and the guide groove is
Opened at the front end face of the joint body, the guided pin is
Screwed to the front of the locking piece, biased by the spring
The locking piece to be moved is formed by moving the guided pin into the guide groove.
Is held at the release position by contacting the outer peripheral end of the
It was configured to be.
【０００７】[0007]
【発明の作用及び効果】＜請求項１の発明＞係止片は係
合位置と解除位置との間で径方向に平行移動するので、
解除位置に変位した状態では雌ネジ部と雄ネジ状接続部
との隙間が軸方向において均一となり、傾動タイプの係
止片のように傾動中心から遠い部分で無駄な空間が空く
ことはない。したがって、係止片の移動ストロークを必
要最小とし、管継手の外径を小さくすることができる。
また、係止片を径方向に平行移動させたことにより、係
止片の周方向寸法を広げても雌ネジ部と雄ネジ状接続部
との干渉の虞がなくなる。これにより、係合強度を向上
させる手段として、係止片の数を増やさずに１個の係止
片の周方向寸法を大きくすることにより全体としての係
合領域を広く確保することが可能である。これは、継手
本体における係止片間の間隔を狭めずに済むことを意味
し、継手本体の強度低下を回避できる。また、係止片の
数が少なくて済むので、継手本体の形状が簡素化され、
製造コストの低減を図ることができる。<Operation and effect of the invention><Invention of claim 1> Since the locking piece moves in parallel in the radial direction between the engagement position and the release position,
When displaced to the release position, the gap between the female screw portion and the male screw connection portion becomes uniform in the axial direction, so that there is no useless space in a portion far from the tilting center as in the tilting type locking piece. Therefore, the moving stroke of the locking piece can be minimized, and the outer diameter of the pipe joint can be reduced.
In addition, since the locking piece is moved in parallel in the radial direction, even if the circumferential dimension of the locking piece is increased, there is no risk of interference between the female screw portion and the male screw-shaped connection portion. Accordingly, as a means for improving the engagement strength, it is possible to secure a wide engagement area as a whole by increasing the circumferential dimension of one locking piece without increasing the number of locking pieces. is there. This means that the interval between the locking pieces in the joint body does not need to be reduced, and a decrease in the strength of the joint body can be avoided. Also, since the number of locking pieces is small, the shape of the joint body is simplified,
Manufacturing costs can be reduced.
【０００８】また、相手側筒状部材と接続されると、ロ
ック機構により係止片が係合位置に保持され、雌ネジ部
と雄ネジ状接続部とが解離不能となる。これにより、相
手側筒状部材との接続状態にロックされる。雄ねじ状接
続部の挿入動作とロック動作とがワンアクション操作に
よって行われるので、操作性に優れている。 Further, when connected to a mating cylindrical member, locking piece is held in the engaged position by the locking mechanism, the female screw portion and the male screw-like connection portion becomes impossible dissociation. This locks the connection state with the mating cylindrical member. Since the insertion operation and the locking operation of the male screw connection portion are performed by a one-action operation, the operability is excellent.
【０００９】[0009]
【発明の実施の形態】＜実施形態１＞以下、本発明を具
体化した実施形態１を図１乃至図４を参照して説明す
る。本実施形態の管継手Ｃは、冷熱空調機に対する冷媒
ガス充填用機器の接続、空調機内の配管、吸水・給湯用
配管における水栓金具等の接続、ガス配管におけるガス
器具等の配管設備に用いられ、相手側筒状部材Ｔの雄ネ
ジ状接続部Ｍに対してワンタッチで接続・取外しできる
ようにしたものである。さて、管継手Ｃは、継手本体１
０と係止片１１とを備えてなり、相手側の雄ねじ状接続
部Ｍに対し、係止片１１の内面の雌ネジ部１２を係合さ
せることにより接続される。継手本体１０は筒状をな
し、その前端部には雄ねじ状接続部Ｍが挿入されるよう
になっており、後端部外周にはアダプタ１３が螺合され
ている。この螺合部分は緩み止め用のロックネジ１４に
より固定されている。また、この螺合部分の後端にはシ
ールリング１５が介装されている。このアダプタ１３に
は図示しない管がねじ込みにより接続される。継手本体
１０の前端部においては、その内周から外周に貫通する
上下一対の切欠部１６が形成されている。切欠部１６
は、上下方向から視て方形に開口し、その軸線と直交す
る断面は、図３及び図４に示すように、概ね櫛形をなし
ている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment A first embodiment of the present invention will be described below with reference to FIGS. The pipe joint C of the present embodiment is used for connecting refrigerant gas filling equipment to a cold air conditioner, connecting pipes in the air conditioner, connecting water faucet fittings in water absorption / hot water supply pipes, and piping equipment such as gas appliances in gas pipes. Thus, it is possible to connect / disconnect to / from the external threaded connecting portion M of the mating cylindrical member T with one touch. Now, the pipe joint C is the joint body 1
0 and a locking piece 11, which is connected to the externally threaded connecting portion M of the mating side by engaging the female screw portion 12 on the inner surface of the locking piece 11. The joint main body 10 has a cylindrical shape, and a male threaded connection portion M is inserted into a front end thereof, and an adapter 13 is screwed around the outer periphery of the rear end. This threaded portion is fixed by a lock screw 14 for preventing loosening. Further, a seal ring 15 is interposed at the rear end of the threaded portion. A tube (not shown) is connected to the adapter 13 by screwing. At the front end of the joint body 10, a pair of upper and lower notches 16 penetrating from the inner periphery to the outer periphery is formed. Notch 16
Has a rectangular opening when viewed from above and below, and a cross section orthogonal to the axis is generally comb-shaped, as shown in FIGS.
【００１０】この両切欠部１６には、夫々、断面櫛形を
なす曲面板状の係止片１１が収容されている。係止片１
１の外周面は継手本体１０の外周面と同一曲率の円弧形
をなしている。係止片１１の内側の面のうち中央部は継
手本体１０の内周面と同一曲率の円弧形をなし、この円
弧形領域には、雄ねじ状接続部Ｍと係合可能な雌ネジ部
１２が形成されている。また、係止片１１の内側面の両
縁部は、水平で切欠部１６の受け面１７と密着可能な平
坦な当接面１８となってる。この当接面１８と受け面１
７が密着した状態では雌ネジ部１２が雄ねじ状接続部Ｍ
と適正に係合するようになる。Each of the notches 16 accommodates a locking piece 11 in the form of a curved plate having a comb-shaped cross section. Locking piece 1
The outer peripheral surface 1 has an arc shape having the same curvature as the outer peripheral surface of the joint body 10. A central portion of the inner surface of the locking piece 11 has an arc shape having the same curvature as the inner peripheral surface of the joint body 10, and a female screw engageable with the male screw connection portion M is formed in this arc shape region. A part 12 is formed. Both edges of the inner surface of the locking piece 11 are flat contact surfaces 18 which are horizontal and can be in close contact with the receiving surfaces 17 of the notches 16. The contact surface 18 and the receiving surface 1
7 are in close contact with each other, and the female screw portion 12 is
And engage properly.
【００１１】当接面１８と受け面１７との間にはスプリ
ング１９が左右対称に設けられている。また、継手本体
１０の前端部には、上下方向（当接面１８及び受け面１
７と直交する方向）に長いガイド溝２０が形成され、一
方、係止片１１の前面には軸方向の被ガイドピン２１が
螺合されており、この被ガイドピン２１は、ガイド溝２
０に対し上下方向の移動を可能に且つ左右方向の遊動を
不能に嵌合されている。さらに、切欠部１６の前面と後
面とにより、係止片１１が上下方向の摺接可能に、且つ
前後方向（軸線方向）の遊動規制状態にガイドされてい
る。A spring 19 is provided symmetrically between the contact surface 18 and the receiving surface 17. In addition, the front end of the joint body 10 has a vertical direction (the contact surface 18 and the receiving surface 1).
A long guide groove 20 is formed in a direction perpendicular to the guide groove 7, and an axially guided pin 21 is screwed on the front surface of the locking piece 11.
It is fitted so that it can move up and down with respect to 0 and cannot move freely in the left and right direction. Further, the locking piece 11 is guided by the front surface and the rear surface of the notch portion 16 so as to be able to slide in the vertical direction and to be in a play restriction state in the front-rear direction (axial direction).
【００１２】かかる係止片１１は、常にはスプリング１
９の付勢により被ガイドピン２１をガイド溝２０の外周
側端部に当接させるとともに雌ネジ部１２を雄ねじ状接
続部Ｍから解離させる解除位置に保持されている（図１
及び図３参照）。また、係止片１１に上下から内向きの
外力が左右すると、係止片１１はスプリング１９の付勢
に抗して当接面１８を受け面１７に当接させるとともに
雌ネジ部１２を雄ねじ状接続部Ｍに係合させる係合位置
に変位するようになっている（図２及び図４を参照）。
即ち、係止片１１は径方向へ平行移動するようになって
いる。尚、係合位置に変位した係止片１１はロック機構
２２によってその係合位置にロックされる。The locking piece 11 is always attached to the spring 1
9, the pin 21 is held at a release position where the guided pin 21 is brought into contact with the outer peripheral end of the guide groove 20 and the female screw portion 12 is disengaged from the male screw connection portion M (FIG. 1).
And FIG. 3). Further, when an inward external force is exerted on the locking piece 11 from above and below, the locking piece 11 is brought into contact with the contact surface 18 against the receiving surface 17 against the bias of the spring 19 and the female screw portion 12 is externally screwed. It is adapted to be displaced to an engagement position where it engages with the connection part M (see FIGS. 2 and 4).
That is, the locking piece 11 moves in parallel in the radial direction. The locking piece 11 displaced to the engagement position is locked at the engagement position by the lock mechanism 22.
【００１３】次に、ロック機構２２について説明する。
継手本体１０には径方向に貫通するボール支持孔２３が
形成され、このボール支持孔２３にロックボール２４が
径方向の移動可能に収容されている。ロックボール２４
の外径寸法は継手本体１０の厚さよりも大きく設定され
ているため、ロックボール２４は継手本体１０の内周側
と外周側の少なくとも一方に必ず突出する。継手本体１
０内には、シール用スライダ２５が軸方向の移動可能に
且つスプリング２６によって前方（雄ねじ状接続部Ｍに
接近する方向）へ付勢されて設けられている。シール用
スライダ２５の前端部にはシールリング２７が嵌着さ
れ、後端部外周には継手本体１０との間をシールするＯ
リング２８が嵌着されている。シール用スライダ２５の
外周と継手本体１０の内周との間には、ボール押動用ス
リーブ２９が軸方向の移動可能に且つスプリング３０に
より前方（ロックボール２４を外周側へ押動する方向）
へ付勢されて設けられている。このボール押動用スリー
ブ２９はシール用スライダ２５に対して軸方向の相対移
動が可能となっている。また、シール用スライダ２５の
外周にはボール押動用スリーブ２９の一定以上の前進を
規制するストッパリング３１が嵌着されている。Next, the lock mechanism 22 will be described.
A ball support hole 23 penetrating in the radial direction is formed in the joint body 10, and a lock ball 24 is accommodated in the ball support hole 23 so as to be movable in the radial direction. Rock ball 24
Is set to be larger than the thickness of the joint body 10, the lock ball 24 always protrudes to at least one of the inner peripheral side and the outer peripheral side of the joint main body 10. Fitting body 1
In FIG. 0, a sealing slider 25 is provided so as to be movable in the axial direction and urged forward (in a direction approaching the external threaded connection portion M) by a spring 26. A seal ring 27 is fitted to the front end of the sealing slider 25, and O is provided on the outer periphery of the rear end to seal the gap between the joint main body 10.
A ring 28 is fitted. Between the outer periphery of the sealing slider 25 and the inner periphery of the joint body 10, a ball pushing sleeve 29 is axially movable and is forwardly moved by a spring 30 (the direction in which the lock ball 24 is pushed outward).
It is provided to be biased to. The ball pushing sleeve 29 can move relative to the sealing slider 25 in the axial direction. A stopper ring 31 is fitted around the outer periphery of the sealing slider 25 for restricting the ball pushing sleeve 29 from moving forward by a certain amount or more.
【００１４】継手本体１０の外周には、スリーブ３２が
軸方向の移動可能に且つスプリング３３により前方（ロ
ック方向）へ付勢された状態で設けられている。スリー
ブ３２の後端部は、ロックボール２４を外周側から押圧
する押圧部３４とされ、この押圧部３４よりも前方内周
にはロックボール２４との干渉を回避するための逃がし
凹部３５が形成されている。また、スリーブ３２の前端
部内周には、係止片１１の外周の受け斜面３６を後方か
ら押してその係止片１１を内周側（係合位置側）へ押動
する押動斜面３７が形成されている。さらに、この押動
斜面３７よりも前方には、係合位置にある係止片１１を
解除位置側への変位規制する規制部３９が形成されてい
る。また、スリーブ３２の外周には、このスリーブ３２
を後方（ロック解除方向）へスライド操作するための指
掛け部３８が突成されている。尚、アダプタ１３の外周
には前方へ延びる筒状のグリップ４０がＣ形リング４１
を用いて固着され、このグリップ４０がスリーブ３２の
後端部とスプリング３３とを外側から覆っている。A sleeve 32 is provided on the outer periphery of the joint body 10 so as to be movable in the axial direction and urged forward (locking direction) by a spring 33. The rear end of the sleeve 32 is a pressing portion 34 for pressing the lock ball 24 from the outer peripheral side, and a relief concave portion 35 is formed on the inner peripheral side of the pressing portion 34 to avoid interference with the lock ball 24. Have been. Further, on the inner periphery of the front end portion of the sleeve 32, there is formed a pushing slope 37 for pushing the receiving slope 36 on the outer periphery of the locking piece 11 from the rear to push the locking piece 11 to the inner circumference side (engagement position side). Have been. Further, a restricting portion 39 for restricting the displacement of the locking piece 11 at the engagement position toward the release position is formed forward of the pressing slope 37. Also, the sleeve 32
Is finger-projected to slide backward (in the unlocking direction). A cylindrical grip 40 extending forward is provided on the outer circumference of the adapter 13 with a C-shaped ring 41.
The grip 40 covers the rear end of the sleeve 32 and the spring 33 from outside.
【００１５】次に、本実施形態の作用について説明す
る。本実施形態の管継手Ｃは、常には、図１及び図３に
示すように、係止片１１がスプリング１９により雄ねじ
状接続部Ｍとの係合位置よりも外周側へ退避した解除位
置に保持されている。このときロック機構２２において
は、スリーブ３２が後退しているとともに、ロックボー
ル２４が外周側へ変位してその一部が逃がし凹部３５に
嵌合されている。ロックボール２４はボール押動用スリ
ーブ２９により内周側への変位を規制されているので、
スリーブ３２はその逃がし凹部３５とロックボール２４
との係合により後退位置に保持され、したがって、係止
片１１はスリーブ３２で押されて係合位置方向（内周
側）へ変位するということがない。また、シール用スラ
イダ２５は、スプリング２６の付勢により所定の接続位
置よりも前方へ進出してその段部４３をボール押動用ス
リーブ２９の後端に係止させる位置で雄ねじ状接続部Ｍ
を待ち受けている。Next, the operation of the present embodiment will be described. As shown in FIGS. 1 and 3, the pipe joint C of the present embodiment is always in the release position in which the locking piece 11 is retracted to the outer peripheral side from the engagement position with the male screw connection portion M by the spring 19. Is held. At this time, in the lock mechanism 22, the sleeve 32 is retracted, and the lock ball 24 is displaced to the outer peripheral side, and a part of the lock ball 24 is fitted into the relief recess 35. Since the displacement of the lock ball 24 to the inner peripheral side is restricted by the ball pushing sleeve 29,
The sleeve 32 has a relief recess 35 and a lock ball 24.
Therefore, the locking piece 11 is not pushed by the sleeve 32 and displaced in the direction of the engagement position (the inner peripheral side). Further, the sealing slider 25 is advanced forward from a predetermined connection position by the bias of the spring 26 and the stepped portion 43 is locked at the rear end of the ball pushing sleeve 29 at the position where the male screw connection portion M is engaged.
I am waiting for you.
【００１６】この状態から相手側筒状部材Ｔを接続する
際には、継手本体１０内に雄ねじ状接続部Ｍを挿入して
その先端をシール用スライダ２５のシールリング２７に
当接させ、さらにスプリング２６の付勢に抗して所定の
深さまで押し込むようにする。すると、シール用スライ
ダ２５が後退し、それに伴ってストッパリング３１がボ
ール押動用スリーブ２９を押して後退させる。すると、
ロックボール２４がスプリング３３の付勢により逃がし
凹部３５の後端で押されて内周側へ変位し、ロックボー
ル２４との係合を解除されたスリーブ３２は、スプリン
グ３３の付勢により前進する。もし、操作中にスリーブ
３２が前進しなければ、雄ねじ状接続部Ｍを更に深く押
し込むようにする。スリーブ３２が前進するのに伴い、
その押動斜面３７が係止片１１の受け斜面３６を押し、
これにより係止片１１はスプリング１９の付勢に抗して
内周側へ押動されて係合位置に変位する。すると、雌ネ
ジ部１２が雄ねじ状接続部Ｍと係合し、もって管継手Ｃ
と相手側筒状部材Ｔとが接続状態となる（図２及び図４
を参照）。When connecting the mating cylindrical member T from this state, a male threaded connecting portion M is inserted into the joint main body 10 and its tip is brought into contact with the seal ring 27 of the sealing slider 25, and further, The spring 26 is pushed to a predetermined depth against the bias of the spring 26. Then, the slider 25 for sealing retreats, and accordingly, the stopper ring 31 pushes the sleeve 29 for ball pressing to retreat. Then
The lock ball 24 is displaced inward by being pushed by the rear end of the relief recess 35 due to the bias of the spring 33, and the sleeve 32 disengaged from the lock ball 24 advances by the bias of the spring 33. . If the sleeve 32 does not advance during operation, the male threaded connection M is pushed deeper. As the sleeve 32 advances,
The pushing slope 37 pushes the receiving slope 36 of the locking piece 11,
As a result, the locking piece 11 is pushed inwardly against the bias of the spring 19 to be displaced to the engagement position. Then, the female screw portion 12 engages with the male screw connection portion M, and thus the pipe joint C
And the mating cylindrical member T are connected (see FIGS. 2 and 4).
See).
【００１７】この係合状態（接続状態）から相手側筒状
部材Ｔを離脱する際には、図２に示す状態からスリーブ
３２を手で後方にスライドさせる。すると、係止片１１
はスプリング１９により外周側の解除位置へ変位して雄
ねじ状接続部Ｍとの係合を解除される。また、ロック機
構２２においては、逃がし凹部３５がロックボール２４
と対応したところで、ボール押動用スリーブ２９で押さ
れたロックボール２４が外周側へ押動されて逃がし凹部
３５と嵌合する。これに伴い、ボール押動用スリーブ２
９はロックボール２４の内周側に潜り込んでその内周側
への戻りを規制し、このロックボール２４と逃がし凹部
３５との係合によりスリーブ３２は係止片１１を押動し
ない後退位置にロックされる。この間、シール用スライ
ダ２５はスプリング２６の付勢により前方へ移動しつつ
雄ねじ状接続部Ｍを押し出す。When disengaging the mating tubular member T from this engaged state (connected state), the sleeve 32 is slid backward by hand from the state shown in FIG. Then, the locking piece 11
Is displaced by the spring 19 to the release position on the outer peripheral side, and the engagement with the male screw connection portion M is released. Further, in the lock mechanism 22, the escape recess 35 is provided with the lock ball 24.
At this point, the lock ball 24 pushed by the ball pushing sleeve 29 is pushed outward and fits into the relief recess 35. Along with this, the ball pushing sleeve 2
The reference numeral 9 denotes a lock ball 24 which slides into the inner peripheral side of the lock ball 24 and regulates the return to the inner peripheral side. Locked. During this time, the sealing slider 25 pushes the male screw-shaped connection portion M while moving forward by the bias of the spring 26.
【００１８】上述のように本実施形態においては、係止
片１１を係合位置と解除位置との間で径方向に平行移動
させるようにしたので、解除位置に変位した状態では雌
ネジ部１２と雄ねじ状接続部Ｍとの隙間が軸方向におい
て均一となり、傾動タイプの係止片のように傾動中心か
ら遠い部分で無駄な空間が空くことはない。したがっ
て、係止片１１の移動ストロークを必要最小とし、管継
手Ｃの外径を小さくすることが可能となっている。As described above, in the present embodiment, the locking piece 11 is moved in parallel in the radial direction between the engagement position and the release position, so that the female screw portion 12 is displaced to the release position. The gap between the screw and the external threaded connecting portion M becomes uniform in the axial direction, so that there is no useless space in a portion far from the tilting center as in the tilting type locking piece. Therefore, the movement stroke of the locking piece 11 can be minimized, and the outer diameter of the pipe joint C can be reduced.
【００１９】また、係止片１１を径方向に平行移動させ
る構成としたことにより、係止片１１の周方向寸法を広
げても雌ネジ部１２と雄ねじ状接続部Ｍとの干渉の虞が
なくなる。これにより、係合強度を向上させる手段とし
て、係止片１１の数を増やさずに１個の係止片１１の周
方向寸法を大きくすることにより全体としての係合領域
を広く確保することが可能となっている。これは、継手
本体１０における係止片１１間の間隔を狭めずに済むこ
とを意味し、継手本体１０の強度低下が回避されてい
る。また、係止片１１の数が少なくて済むので、継手本
体１０の形状が簡素化され、製造コストの低減が図られ
ている。Further, since the locking piece 11 is configured to be moved in parallel in the radial direction, even if the circumferential dimension of the locking piece 11 is increased, there is a possibility that the female screw portion 12 and the male screw connection portion M may interfere with each other. Disappears. Accordingly, as a means for improving the engagement strength, it is possible to secure a wide engagement area as a whole by increasing the circumferential dimension of one locking piece 11 without increasing the number of locking pieces 11. It is possible. This means that the interval between the locking pieces 11 in the joint body 10 does not need to be reduced, and a decrease in the strength of the joint body 10 is avoided. Further, since the number of the locking pieces 11 can be reduced, the shape of the joint body 10 is simplified, and the manufacturing cost is reduced.
【００２０】さらに、雄ねじ状接続部Ｍを継手本体１０
に挿入する操作を行うだけで、係止片１１が自動的に雄
ねじ状接続部Ｍと係合されるとともに、その係合状態に
ロックされるようになっているので、接続の操作は単に
押し込むという簡単なワンアクションで済み、操作性に
優れている。また、相手側筒状部材Ｔを離脱する際に
も、スリーブ３２を後退させるだけで係止片１１と雄ね
じ状接続部Ｍとの係合が解除されるとともに、雄ねじ状
接続部Ｍが押し出されるようになっているので、操作性
が良い。Further, the external threaded connecting portion M is connected to the joint body 10.
The locking piece 11 is automatically engaged with the male screw-shaped connection portion M and locked in the engaged state by simply performing the operation of inserting the connection piece, so that the connection operation is simply pushed in. With just one simple action, it has excellent operability. Also, when the mating tubular member T is detached, the engagement between the locking piece 11 and the male screw connection portion M is released only by retreating the sleeve 32, and the male screw connection portion M is pushed out. Operability is good.
【００２１】また、雄ねじ状接続部Ｍの挿入深さが一定
であってもその回転姿勢が一定でなければ、雌ネジ部１
２と係合したときにネジ山同士の係合により雄ねじ状接
続部Ｍの位置が軸方向に微妙に変動するという事情があ
る。しかし、本実施形態では、係合状態においてボール
押動用スリーブ２９とシール用スライダ２５とが軸方向
に遊動可能なので、ボール押動用スリーブ２９がロック
ボール２４に係合する状態と、シールリング２７が雄ね
じ状接続部Ｍの先端と確実に密着する状態とを両立でき
る。即ち、管継手Ｃと相手側筒状部材Ｔとの接続部分の
シール性を確保できるとともに、ロック解除時にはロッ
クボール２４を確実に外周側へ押動することができる。Further, even if the insertion depth of the male screw connection portion M is constant, if the rotation posture thereof is not constant, the female screw portion 1 is not required.
2, the position of the externally threaded connecting portion M is slightly changed in the axial direction due to the engagement of the threads. However, in the present embodiment, the ball pushing sleeve 29 and the sealing slider 25 can move freely in the axial direction in the engaged state, so that the state in which the ball pushing sleeve 29 is engaged with the lock ball 24 and the seal ring 27 A state in which the distal end of the male screw connection portion M is securely in close contact with the distal end can be achieved. That is, it is possible to ensure the sealing performance of the connection portion between the pipe joint C and the mating cylindrical member T, and to reliably push the lock ball 24 to the outer peripheral side at the time of unlocking.
【００２２】＜他の実施形態＞本発明は上記記述及び図
面によって説明した実施形態に限定されるものではな
く、例えば次のような実施態様も本発明の技術的範囲に
含まれ、さらに、下記以外にも要旨を逸脱しない範囲内
で種々変更して実施することができる。 （１）上記実施形態では係止片が２個である場合につい
て説明したが、本発明によれば、係止片の数は３個以上
としてもよい。 （２）雌ネジ部と雄ネジ状接続部との周方向の係合領域
は上記実施形態で示したものに限らず、これよりも小さ
い係合領域としてもよく、大きい係合領域としてもよ
い。<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention. (1) In the above embodiment, the case where the number of the locking pieces is two is described. However, according to the present invention, the number of the locking pieces may be three or more. (2) The circumferential engagement region between the female screw portion and the male screw connection portion is not limited to that described in the above embodiment, and may be a smaller engagement region or a larger engagement region. .
【００２３】（３）上記実施形態では雄ねじ状接続部の
挿入操作を行うだけで係止片を係合状態にロックするロ
ック機構を設けたが、本発明によれば、雄ねじ状接続部
の挿入操作とは別の操作によってロックを行うようにし
てもよい。 （４）上記実施形態では係止片をスプリングによって解
除位置方向へ付勢するようにしたが、このようスプリン
グを設けず、雄ねじ状接続部の挿入時にはネジ山同士の
係合によって係止片を退避させるようにしてもよい。(3) In the above embodiment, the lock mechanism for locking the locking piece in the engaged state is provided by simply performing the operation of inserting the male screw connection portion. However, according to the present invention, the insertion of the male screw connection portion is performed. The lock may be performed by an operation different from the operation. (4) In the above embodiment, the locking piece is urged toward the release position by the spring. However, such a spring is not provided, and the locking piece is engaged by the engagement of the threads when the male threaded connection portion is inserted. You may make it evacuate.
【図１】実施形態１において係止片が解除位置にある状
態をあらわす縦断面図FIG. 1 is a longitudinal sectional view showing a state in which a locking piece is at a release position in a first embodiment.
【図２】実施形態１において係止片が係合位置にある状
態をあらわす部分縦断面図FIG. 2 is a partial longitudinal sectional view showing a state in which a locking piece is in an engagement position in the first embodiment.
【図３】実施形態１において係止片が解除位置にある状
態をあらわす横断面図FIG. 3 is a cross-sectional view showing a state in which a locking piece is at a release position in the first embodiment.
【図４】実施形態１において係止片が係合位置にある状
態をあらわす部分横断面図FIG. 4 is a partial cross-sectional view showing a state in which a locking piece is at an engagement position in the first embodiment.
【図５】従来例の接続状態をあらわす断面図FIG. 5 is a cross-sectional view showing a connection state of a conventional example.
【図６】従来例において係止片が相手側筒状部材との係
合を解除状態をあらわす部分断面図FIG. 6 is a partial cross-sectional view showing a state in which a locking piece is disengaged from a mating cylindrical member in a conventional example.
Ｃ…管継手 Ｍ…雄ねじ状接続部 Ｔ…相手側筒状部材 １０…継手本体 １１…係止片 １２…雌ネジ部 ２２…ロック機構 C: pipe joint M: male screw connection part T: mating cylindrical member 10: joint body 11: locking piece 12: female screw part 22: lock mechanism
フロントページの続き (56)参考文献 特開 平８−121667（ＪＰ，Ａ) 実開 昭62−153494（ＪＰ，Ｕ) 実開 平７−20491（ＪＰ，Ｕ) 実開 昭63−201290（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16L 37/00 - 37/58 Continuation of the front page (56) References JP-A-8-121667 (JP, A) JP-A 62-153494 (JP, U) JP-A 7-20491 (JP, U) JP-A 63-201290 (JP , U) (58) Field surveyed (Int. Cl. 7 , DB name) F16L 37/00-37/58
Claims (2)
される筒状の継手本体と、 内面に雌ネジ部が形成され、その雌ネジ部を前記雄ネジ
状接続部へ係合させる係合位置と前記雄ネジ状接続部か
ら解離させる解除位置との間で変位する係止片とを備え
てなり、 前記係止片が前記係合位置に変位することにより前記相
手側筒状部材との接続状態に保持されるとともに、前記
係止片が前記解除位置に変位することにより前記雄ネジ
状接続部の挿抜を可能とするものであって、 前記係止片は、 前記継手本体に形成した切欠部内に収容されているとと
もに、 この切欠部内の軸線方向における前後両面に摺接しつつ
前記係合位置と前記解除位置との間での径方向の平行移
動を可能とされており、前記雄ねじ状接続部の前記継手本体への挿入動作に伴
い、規制部を軸方向へ変位させつつ前記係止片の外周に
対し軸方向の所定領域に亘って宛うことによりその係止
片を前記解除位置側への変位規制状態にロックするロッ
ク機構を備えている ことを特徴とする管継手。1. A tubular joint body into which a male threaded connection part of a mating cylindrical member is inserted and withdrawn, and a female threaded part formed on an inner surface, and the female threaded part is engaged with the male threaded connection part. An engagement position to be displaced between an engagement position to be disengaged and a release position to be disengaged from the male screw-shaped connection portion. The engagement piece is held in a connected state with a member, and the engagement piece is displaced to the release position, thereby enabling insertion and removal of the male screw-shaped connection portion. Along with being housed in the notch formed in the notch, the diametrically parallel movement between the engagement position and the release position is enabled while slidingly contacting the front and rear surfaces in the axial direction inside the notch, With the operation of inserting the externally threaded connection portion into the joint body,
While displacing the regulating portion in the axial direction on the outer periphery of the locking piece.
On the other hand, it is locked by addressing over a predetermined area in the axial direction.
Locks the piece in the displacement-restricted state toward the release position.
A pipe joint comprising a locking mechanism .
継手本体に設けたガイド溝との係合により、前記係止片
は、前記係合位置と前記解除位置との間の変位を許容さ
れているとともにその変位方向と交差する方向への遊動
を規制されており、 前記継手本体と前記係止片との間には、前記係止片を前
記解除位置方向へ付勢する一対のスプリングが前記ガイ
ド溝を挟んで対称に設けられている請求項１のものにお
いて、 前記切欠部が前記継手本体の外周に開口され、 前記ガイド溝が前記継手本体の前端面に開口され、 前記被ガイドピンが前記係止片の前面に螺合され、 前記スプリングによって付勢される前記係止片が、前記
被ガイドピンを前記ガイド溝の外周側端部に当接させる
ことで前記解除位置に保持される構成としたこ とを特徴
とする管継手。 2. The engagement piece allows a displacement between the engagement position and the release position by engagement of a guided pin provided on the engagement piece with a guide groove provided on the joint body. And a pair of springs for biasing the locking piece in the direction of the release position between the joint body and the locking piece. Are provided symmetrically with respect to the guide groove .
The notch is opened on the outer periphery of the joint body, the guide groove is opened on the front end face of the joint body, the guided pin is screwed into the front surface of the locking piece, and is urged by the spring. The locking piece to be
Bring the guided pin into contact with the outer peripheral end of the guide groove
Characterized that you have a configuration which is held in the release position by
And pipe fittings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10003354A JP3002168B2 (en) | 1998-01-09 | 1998-01-09 | Pipe fittings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10003354A JP3002168B2 (en) | 1998-01-09 | 1998-01-09 | Pipe fittings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11201352A JPH11201352A (en) | 1999-07-30 |
| JP3002168B2 true JP3002168B2 (en) | 2000-01-24 |
Family
ID=11555024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10003354A Expired - Lifetime JP3002168B2 (en) | 1998-01-09 | 1998-01-09 | Pipe fittings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3002168B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011149487A (en) * | 2010-01-21 | 2011-08-04 | Akatsuki-Giken Co Ltd | Quick pipe joint |
| KR200496768Y1 (en) * | 2021-01-14 | 2023-04-21 | 농업회사법인 주식회사 생태경영연구원 | Feeder for parrot and cage having it |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5457729B2 (en) * | 2009-06-12 | 2014-04-02 | 株式会社暁技研 | Pipe fitting |
| CN110914584B (en) * | 2017-06-27 | 2021-09-14 | 麦克诺特私人有限公司 | Grease coupling |
-
1998
- 1998-01-09 JP JP10003354A patent/JP3002168B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011149487A (en) * | 2010-01-21 | 2011-08-04 | Akatsuki-Giken Co Ltd | Quick pipe joint |
| KR200496768Y1 (en) * | 2021-01-14 | 2023-04-21 | 농업회사법인 주식회사 생태경영연구원 | Feeder for parrot and cage having it |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11201352A (en) | 1999-07-30 |
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