JPH05248581A - Pipe joint - Google Patents

Pipe joint

Info

Publication number
JPH05248581A
JPH05248581A JP4082679A JP8267992A JPH05248581A JP H05248581 A JPH05248581 A JP H05248581A JP 4082679 A JP4082679 A JP 4082679A JP 8267992 A JP8267992 A JP 8267992A JP H05248581 A JPH05248581 A JP H05248581A
Authority
JP
Japan
Prior art keywords
lock
lock claw
release
tube
tip
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.)
Granted
Application number
JP4082679A
Other languages
Japanese (ja)
Other versions
JPH0794879B2 (en
Inventor
Tomio Hama
富夫 濱
Kiyoyasu Yamazaki
清康 山崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nihon Pisco Co Ltd
Original Assignee
Nihon Pisco Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nihon Pisco Co Ltd filed Critical Nihon Pisco Co Ltd
Priority to JP4082679A priority Critical patent/JPH0794879B2/en
Publication of JPH05248581A publication Critical patent/JPH05248581A/en
Publication of JPH0794879B2 publication Critical patent/JPH0794879B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00Couplings of the quick-acting type
    • F16L37/08Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/091Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a ring provided with teeth or fingers
    • F16L37/0915Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a ring provided with teeth or fingers with a separate member for releasing the coupling

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

PURPOSE:To facilitate the release operation by pushingly pressing a cylindrical lock part in the direction of the tip, making an elastic deformation of a lock claw outward at the tip part of the release part, and at the same time, holding the rear end part of the lock claw between the release part and the regulating part, thereby increasing the deformation amount of the lock part. CONSTITUTION:When a tube 18 is connected to a pipe joint, the tip of the tube is first inserted from the rear end of a guide ring 12 constituting a joint body part up to a tube end 40 in the inner circumferential surface of a housing 10. A lock claw 16 of a lock part 14 is pushingly expanded. Then, the tube 18 is somewhat drawn back, and the lock claw 16 is simultaneously moved rearward until a collar part 42 is brought into contact with a rear end part 44. Successively, the lock claw 16 is pushingly pressed to the inner side by a bush 26 which is a regulating part, and the lock claw 16 is bitten onto the outer circumferential surface of the tube 18. On the other hand, the lock claw 16 is pushingly pressed outward by this tip part 24 by pushing a release ring 20 forward, and the lock claw 16 is separated from the outer circumferential surface of the tube 18.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は管継手に関し、一層詳細
には筒状の継手本体部と、継手本体部内に配され、挿入
された管の外周面へ食い込み可能なロック爪を有するロ
ック部と、継手本体部の先端方向へ押動された際に、管
の外周面からロック爪を解放する解放部とを具備する管
継手に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint, and more particularly, to a tubular joint main body and a lock portion provided in the joint main body and having a lock claw capable of biting into the outer peripheral surface of the inserted pipe. And a release portion that releases the lock claw from the outer peripheral surface of the pipe when the joint main body is pushed in the distal direction.

【0002】[0002]

【従来の技術】従来、継手本体部内に配され、挿入され
た管の外周面へ食い込み可能なロック爪を有するロック
部と、継手本体部の先端方向へ押動された際に、管の外
周面からロック爪を解放する解放部とを具備する管継手
の一例としては、本願出願人が先に出願し、特公平2−
32517号公報に開示される技術がある。この管継手
において、ロック部は内径端縁および外径端縁のそれぞ
れから多数の放射状切込が交互に形成された環状に形成
されると共に、前記切込が形成された外周縁側が一定幅
にわたって管の挿入方向へ屈曲され、この屈曲端である
外径端縁によって継手本体部内に設けられた環状溝内に
嵌装保持され、前記切込が形成された内径端縁が挿入さ
れた管の外周面へ食い込み可能になっている。ロック部
の食い込みを解放するためには、解放部を継手本体部内
へ押し込む。解放部が押し込まれると、解放部の先端に
より、管の外周面へ食い込んでいるロック部の内径端縁
が前方へ押動されると共に、管の外周面から離反して食
い込みが解放される。
2. Description of the Related Art Conventionally, a lock portion having a lock claw disposed inside a joint body portion and capable of biting into the outer peripheral surface of an inserted pipe, and an outer periphery of the pipe when pushed toward the tip of the joint body portion. As an example of a pipe joint having a release portion that releases the lock claw from the surface, the applicant of the present application filed a patent application previously,
There is a technique disclosed in Japanese Patent No. 32517. In this pipe joint, the lock portion is formed in an annular shape in which a large number of radial cuts are alternately formed from the inner diameter end edge and the outer diameter end edge, respectively, and the outer peripheral edge side where the cuts are formed extends over a certain width. The pipe is bent in the insertion direction of the pipe, and is fitted and held in an annular groove provided in the joint main body by the outer diameter end that is the bent end of the pipe into which the inner diameter end having the cut is inserted. It is possible to cut into the outer peripheral surface. To release the lock bite, the release portion is pushed into the joint body. When the release part is pushed in, the tip of the release part pushes the inner diameter end edge of the lock part, which bites into the outer peripheral surface of the pipe, toward the front, and separates from the outer peripheral surface of the pipe to release the bite.

【0003】[0003]

【発明が解決しようとする課題】しかしながら上記の従
来の管継手には次のような課題がある。管を接続すると
いう点においては優れた機能を有するものの、ロック部
の食い込みを解放する際に、解放部の操作に大きな力が
必要であるという課題がある。ロック部は金属で形成さ
れており、解放操作を行う際はロック部の内径端縁を変
形させる必要がある。この変形に要する力に大きなもの
が要求されるため操作性に難が有る。従って、本発明は
ロック部の解放操作を小さな力で行い得る操作性の良い
管継手を提供することを目的とする。
However, the above conventional pipe joint has the following problems. Although it has an excellent function in connecting pipes, there is a problem that a large force is required to operate the release portion when releasing the bite of the lock portion. The lock portion is made of metal, and it is necessary to deform the inner diameter edge of the lock portion when performing the releasing operation. Since a large force is required for this deformation, operability is difficult. Therefore, it is an object of the present invention to provide a pipe joint with a good operability that can release the lock portion with a small force.

【0004】[0004]

【課題を解決するための手段】上記課題を解決するた
め、本願発明者は研究を重ねた結果、ロック部の変形量
を大きくすることにより、変形に要する力を小さくでき
る点に着目して本発明に到達したものであり、次の構成
を備える。すなわち、両端が開放された筒状に形成され
た継手本体部と、両端が開放された筒状に形成され、前
記継手本体部内へ軸線方向へ移動可能に配され、先端部
分は周方向へ分割され、内側へ弾性変形することにより
先端が、挿入された管の外周面へ食い込み可能な複数の
ロック爪に形成されたロック部と、両端が開放された筒
状に形成され、前記継手本体部内へ軸線方向へ移動可能
に配され、後端部分は継手本体部の後端より常時外方へ
突出し、先端部分は常時前記ロック部内に位置し、継手
本体部の先端方向へ押動された際にはロック部を前記先
端方向へ押動すると共に、先端部分で前記ロック爪を外
側へ弾性変形させることにより、前記管の外周面からロ
ック爪を解放する解放部と、前記継手本体部内に設けら
れ、前記ロック爪が前記管の外周面へ食い込んだ際には
ロック爪と当接してロック爪の外側方向への弾性変形を
規制し、前記解放部と前記ロック部が前記先端方向へ押
動され、解放部の先端部分がロック爪を外側へ弾性変形
させる際には解放部との間でロック部の後端部分を挟持
可能な規制部とを具備することを特徴とする。
In order to solve the above problems, the inventors of the present application have conducted extensive research and as a result, have focused on the fact that the force required for the deformation can be reduced by increasing the deformation amount of the lock portion. The present invention has been accomplished and has the following configuration. That is, a joint main body formed in a tubular shape with both ends open, and a tubular main body formed with both ends open, are arranged movably in the axial direction into the joint main body, and the tip portion is divided in the circumferential direction. The inside of the joint body is formed with a lock portion formed by a plurality of lock claws capable of biting into the outer peripheral surface of the inserted pipe by elastically deforming inward, and a tubular shape with both ends open. Is arranged so as to be movable in the axial direction, the rear end portion always protrudes outward from the rear end of the joint body portion, the tip portion is always located in the lock portion, and is pushed in the tip direction of the joint body portion. Is provided in the joint main body and a release part that releases the lock claw from the outer peripheral surface of the pipe by pushing the lock part in the tip direction and elastically deforming the lock claw outward at the tip part. The locking claw of the tube When it digs into the peripheral surface, it abuts on the lock claws and restricts the elastic deformation of the lock claws in the outward direction, the release part and the lock part are pushed in the distal direction, and the distal end part of the release part is locked. When elastically deforming the claw outwardly, it is characterized by including a restricting portion capable of holding the rear end portion of the lock portion with the releasing portion.

【0005】[0005]

【作用】作用について説明する。ロック部は筒状に形成
されており、ロック部の食い込みを解放する際には、ロ
ック部が先端方向へ押動され、解放部の先端部分がロッ
ク爪を外側へ弾性変形させる。その際、解放部と規制部
の間でロック爪の後端部分が挟持されるので、後端部分
である当該挟持部分と、先端部分に形成されている弾性
変形するロック爪との間は離れているので、ロック部の
変形量大きくすることが可能となり、変形に要する力を
小さくすることが可能となる。
[Operation] The operation will be described. The lock portion is formed in a tubular shape, and when releasing the biting of the lock portion, the lock portion is pushed toward the tip end, and the tip portion of the release portion elastically deforms the lock claw outward. At that time, since the rear end portion of the lock claw is clamped between the release portion and the restriction portion, the clamping portion, which is the rear end portion, and the elastically deformable lock pawl formed at the front end portion are separated from each other. Therefore, the amount of deformation of the lock portion can be increased, and the force required for the deformation can be reduced.

【0006】[0006]

【実施例】以下、本発明の好適な実施例について添付図
面と共に詳述する。まず、構成について図1(管継手の
断面図)および図3(管継手の内部機構を示した分解斜
視図)を参照して説明する。10は継手本体部を構成す
るハウジングであり、両端が開放された筒状に形成され
ている。ハウジング10は先端部(不図示)に雄ネジが
形成され、適宜な部材へ螺着、固定可能になっている。
12は継手本体部を構成するガイドリングであり、両端
が開放された筒状に形成されている。ガイドリング12
はハウジング10の後端側から嵌入、固定されている。
14はロック部であり、両端が開放された筒状に形成さ
れ、ガイドリング12内へ、軸線L方向へ移動可能に配
設されている。ロック部14の先端部分は周方向へ分割
された複数(本実施例においては4個)のロック爪16
に形成されている。各ロック爪16は内側へ弾性変形す
ることにより先端が、挿入された合成樹脂製チューブ1
8の外周面へ食い込み可能になっている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. First, the configuration will be described with reference to FIG. 1 (cross-sectional view of the pipe joint) and FIG. 3 (exploded perspective view showing the internal mechanism of the pipe joint). Reference numeral 10 is a housing that constitutes the joint body, and is formed in a tubular shape with both ends open. The housing 10 has a male screw formed at its tip (not shown), and can be screwed and fixed to an appropriate member.
Reference numeral 12 is a guide ring that constitutes the joint body, and is formed in a tubular shape with both ends open. Guide ring 12
Is fitted and fixed from the rear end side of the housing 10.
Reference numeral 14 denotes a lock portion, which is formed in a tubular shape with both ends open, and is disposed inside the guide ring 12 so as to be movable in the direction of the axis L. A plurality of (four in this embodiment) lock claws 16 are divided at the tip of the lock portion 14 in the circumferential direction.
Is formed in. Each lock claw 16 is elastically deformed inward so that the tip end is inserted into the synthetic resin tube 1
It is possible to cut into the outer peripheral surface of No. 8.

【0007】20は解放部の一例である解放リングであ
り、両端が開放された筒状に形成されている。解放リン
グ20はガイドリング12内へ軸線L方向へ移動可能に
配され、後端部分はフランジ部22に形成され、常時ガ
イドリング12の後端より後方へ突出している。解放リ
ング20の先端部分は常時ロック部14内に位置する。
解放リング20が先端方向へ押動されると、ロック部1
4を先端方向へ押動すると共に、テーパ状に形成された
先端部分34でロック爪16を内側から外側へ開くよう
に弾性変形させ、チューブ18の外周面からロック爪1
6の食い込みを解放する。
Reference numeral 20 denotes a release ring which is an example of a release portion, and is formed in a tubular shape with both ends open. The release ring 20 is disposed in the guide ring 12 so as to be movable in the direction of the axis L, and the rear end portion is formed on the flange portion 22 and always projects rearward from the rear end of the guide ring 12. The tip portion of the release ring 20 is always located in the lock portion 14.
When the release ring 20 is pushed in the distal direction, the lock portion 1
4 is pushed in the distal direction, and at the same time, the lock claw 16 is elastically deformed so as to open from the inside to the outside by the tapered tip portion 34, and the lock claw 1 is moved from the outer peripheral surface of the tube 18.
Release the bite of 6.

【0008】26は規制部の一例であるブッシュであ
り、中途で切断されたリング状に形成されている。ブッ
シュ26は金属または硬質の合成樹脂で形成されてい
る。ブッシュ26はガイドリング12の内周面に形成さ
れている凹溝28内へ嵌入されている。ブッシュ26が
中途で切断されているのは、組立の際に凹溝28内へ嵌
入し易くするためである。ブッシュ26はロック部14
のロック爪16がチューブ18の外周面へ食い込んだ際
に、各ロック爪16の外壁面と当接し、ロック爪16の
外側方向への弾性変形を規制する。この規制により、ロ
ック爪16のチューブ18外周面への食い込み状態を保
持し、チューブ18の管継手からの抜脱を防止可能にな
っている。また、解放リング20がガイドリング12内
へ押し込まれると、解放リング20の先端部分24がロ
ック爪16を先端方向へ押動すると共に、ロック爪16
を外側へ開くように弾性変形させるが、その際にブッシ
ュ26は解放リング20の部分30との間でロック部1
4の後端部分32を挟持可能になっている。
Reference numeral 26 is a bush, which is an example of a regulating portion, and is formed in a ring shape that is cut midway. The bush 26 is made of metal or hard synthetic resin. The bush 26 is fitted in a groove 28 formed on the inner peripheral surface of the guide ring 12. The bush 26 is cut off midway in order to facilitate the fitting into the groove 28 during assembly. The bush 26 is the lock portion 14.
When the lock claws 16 of the above-mentioned bite into the outer peripheral surface of the tube 18, the lock claws 16 come into contact with the outer wall surfaces of the lock claws 16 and regulate the elastic deformation of the lock claws 16 in the outward direction. By this regulation, the state in which the lock claw 16 bites into the outer peripheral surface of the tube 18 is maintained, and it is possible to prevent the tube 18 from being pulled out from the pipe joint. When the release ring 20 is pushed into the guide ring 12, the tip portion 24 of the release ring 20 pushes the lock pawl 16 in the tip direction and the lock pawl 16
Elastically deforms so as to open outwards, with the bushing 26 interlocking with the part 30 of the release ring 20 on the locking part 1.
The rear end portion 32 of the No. 4 can be clamped.

【0009】34は弾性体スリーブであり、合成ゴム等
の弾性材料で形成されている。弾性体スリーブ34はハ
ウジング10内に形成されている段差36に掛止されて
いる。弾性体スリーブ34はチューブ18を介して送ら
れてきた流体のハウジング10外への漏洩を防止すべく
配設されている。弾性体スリーブ34は断面逆V字状に
形成され、チューブ18から流体が漏洩しても弾性体ス
リーブ34はV字の幅が広がろうとするので、その結果
ハウジング10内周面とチューブ18外周面への密着度
が高くなり流体の漏洩を防止することができる。38は
リング部材であり、弾性体スリーブ34とガイドリング
12先端面との間に挟着されている。リング部材38は
弾性体スリーブ34が外力を受けて異常変形するのを防
止するために配設されている。このように構成される管
継手を組み立てるには、まず、弾性体スリーブ34をハ
ウジング10内へ挿入し、続いてリング部材38を挿入
する。その後、予め組んでおいたガイドリング12、ブ
ッシュ26、ロック部14および解放リング20をハウ
ジング10内へ嵌入して組み立てる。
Reference numeral 34 denotes an elastic sleeve, which is made of an elastic material such as synthetic rubber. The elastic sleeve 34 is hooked on a step 36 formed in the housing 10. The elastic sleeve 34 is arranged to prevent the fluid sent through the tube 18 from leaking out of the housing 10. The elastic sleeve 34 is formed in an inverted V shape in cross section, and even if fluid leaks from the tube 18, the elastic sleeve 34 tries to widen the V shape, and as a result, the inner peripheral surface of the housing 10 and the outer periphery of the tube 18 are increased. The degree of close contact with the surface is increased, and fluid leakage can be prevented. Reference numeral 38 denotes a ring member, which is sandwiched between the elastic sleeve 34 and the tip end surface of the guide ring 12. The ring member 38 is provided to prevent the elastic sleeve 34 from being abnormally deformed by an external force. In order to assemble the pipe joint constructed as described above, first, the elastic sleeve 34 is inserted into the housing 10, and then the ring member 38 is inserted. Then, the guide ring 12, the bush 26, the lock portion 14, and the release ring 20 which are assembled in advance are fitted into the housing 10 to be assembled.

【0010】次に、本実施例の管継手にチューブ18を
接続する方法について図1と共に説明する。チューブ1
8の先端を、ガイドリング12の後端からハウジング1
0内周面に段差状に形成されているチューブエンド40
へ当接するまで挿入する。その際、ロック部14のロッ
ク爪16を押し広げながらチューブ18を挿入する。チ
ューブ18の先端がチューブエンド40に達したら、チ
ューブ18を若干後方へ引き戻す。ロック爪16はチュ
ーブ18が挿入された段階でチューブ18外周面へ僅か
食い込んでおり、チューブ18の引き戻しに伴いロック
部14はチューブ18と一緒に後方へ移動する。ロック
部14は鍔部42がガイドリング12の後端部44と当
接する位置(図1に示す位置)まで移動する。ロック部
14が後方へ移動すると、ブッシュ26によりロック爪
16が内側へ押動され、徐々に内側へ弾性変形すると共
に、チューブ18外周面へ深く食い込む。ロック部14
の鍔部42がガイドリング12の後端部44と当接する
と、チューブ18、ロック部14および解放リング20
の移動が停止し、ブッシュ26はロック爪16がチュー
ブ18外周面へ深く食い込んだ状態(ロック状態)を保
持する(図1の状態)。
Next, a method of connecting the tube 18 to the pipe joint of this embodiment will be described with reference to FIG. Tube 1
8 from the rear end of the guide ring 12 to the housing 1
0 Tube end 40 formed in a step shape on the inner peripheral surface
Insert until it touches. At that time, the tube 18 is inserted while the lock claw 16 of the lock portion 14 is being spread. When the tip of the tube 18 reaches the tube end 40, the tube 18 is pulled back slightly backward. The lock claw 16 bites slightly into the outer peripheral surface of the tube 18 when the tube 18 is inserted, and the lock portion 14 moves rearward together with the tube 18 as the tube 18 is pulled back. The lock portion 14 moves to a position (a position shown in FIG. 1) where the collar portion 42 comes into contact with the rear end portion 44 of the guide ring 12. When the lock portion 14 moves rearward, the lock claw 16 is pushed inward by the bush 26, gradually elastically deformed inward, and deeply digs into the outer peripheral surface of the tube 18. Lock part 14
When the brim portion 42 of the abutment is brought into contact with the rear end portion 44 of the guide ring 12, the tube 18, the lock portion 14, and the release ring 20 are
Is stopped, and the bush 26 holds the state (the locked state) in which the lock claw 16 deeply digs into the outer peripheral surface of the tube 18 (the state in FIG. 1).

【0011】ロック状態からロック部14の食い込みを
解放し、チューブ18を管継手から抜き出す方法につい
て図2をさらに参照して説明する。図1の状態におい
て、解放リング20を先端方向へ押し込む。ロック部1
4とチューブ18も先端方向へ移動する。その際、解放
リング20の先端部分24はロック爪16を内側から外
側へ押動する。この押動によりロック爪16はチューブ
18外周面から離反し、チューブ18は解放される。そ
の際、ロック部14は後端部分32が、ブッシュ26と
解放リング20の部分30との間で挟持されるので、各
ロック爪16は当該挟持部分を支点として外側へ弾性変
形する(図2の状態)。本実施例において、当該支点と
ロック爪16の食い込み部分との間は比較的距離がある
のでロック爪の変形量は大きいので、解放リング20を
押し込むために必要な力は小さくて済む。以上、本発明
の好適な実施例について種々述べてきたが、本発明は上
述の実施例に限定されるのではなく、例えば規制部は中
途が切断されたリング部材38ではなく、図4に示すよ
うな金属または合成樹脂製の弾性変形可能なジグザクリ
ング26aでもよい等、発明の精神を逸脱しない範囲で
さらに多くの改変を施し得るのはもちろんである。
A method of releasing the bite of the lock portion 14 from the locked state and withdrawing the tube 18 from the pipe joint will be described with further reference to FIG. In the state of FIG. 1, the release ring 20 is pushed toward the tip. Lock part 1
4 and the tube 18 also move in the distal direction. At this time, the tip portion 24 of the release ring 20 pushes the lock claw 16 from the inside to the outside. By this pushing movement, the lock claw 16 is separated from the outer peripheral surface of the tube 18, and the tube 18 is released. At that time, since the rear end portion 32 of the lock portion 14 is sandwiched between the bush 26 and the portion 30 of the release ring 20, each lock claw 16 is elastically deformed outward with the sandwiched portion as a fulcrum (FIG. 2). Condition). In this embodiment, since there is a relatively large distance between the fulcrum and the biting portion of the lock claw 16, the amount of deformation of the lock claw is large, so that the force required to push the release ring 20 can be small. Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. For example, the restricting portion is not the ring member 38 cut in the middle but is shown in FIG. It is needless to say that more modifications can be made without departing from the spirit of the invention, such as the elastically deformable zigzag ring 26a made of metal or synthetic resin.

【0012】[0012]

【発明の効果】本発明に係る管継手を用いると、ロック
部は筒状に形成されており、ロック部の管への食い込み
を解放する際には、ロック部が先端方向へ押動され、解
放部の先端部分がロック爪を外側へ弾性変形させる。そ
の際、解放部と規制部の間でロック爪の後端部分が挟持
されるので、後端部分である当該挟持部分と、先端部分
に形成されている弾性変形するロック爪との間は離れて
いるので、ロック部の変形量大きくすることが可能とな
り、変形に要する力を小さくすることが可能となるの
で、操作性の良い管継手を実現可能となる等の著効を奏
する。
When the pipe joint according to the present invention is used, the lock portion is formed in a tubular shape, and when the bite of the lock portion into the pipe is released, the lock portion is pushed in the distal direction, The tip portion of the release portion elastically deforms the lock claw outward. At that time, since the rear end portion of the lock claw is clamped between the release portion and the restriction portion, the clamping portion, which is the rear end portion, and the elastically deformable lock pawl formed at the front end portion are separated from each other. Therefore, the amount of deformation of the lock portion can be increased, and the force required for the deformation can be reduced, so that a pipe joint with good operability can be realized, and the like.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係る管継手の実施例を示した断面図。FIG. 1 is a cross-sectional view showing an embodiment of a pipe joint according to the present invention.

【図2】図1の管継手のロック部を解放状態にした状態
を示した断面図。
FIG. 2 is a cross-sectional view showing a state in which a lock portion of the pipe joint of FIG. 1 is released.

【図3】図1の管継手のハウジング内の機構を示した分
解斜視図。
3 is an exploded perspective view showing a mechanism inside a housing of the pipe joint of FIG. 1. FIG.

【図4】規制部の他の実施例を示した斜視図。FIG. 4 is a perspective view showing another embodiment of the regulating portion.

【符号の説明】[Explanation of symbols]

10 ハウジング 12 ガイドリング 14 ロック部 16 ロック爪 18 チューブ 20 解放リング 10 Housing 12 Guide Ring 14 Lock Part 16 Lock Claw 18 Tube 20 Release Ring

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 両端が開放された筒状に形成された継手
本体部と、 両端が開放された筒状に形成され、前記継手本体部内へ
軸線方向へ移動可能に配され、先端部分は周方向へ分割
され、内側へ弾性変形することにより先端が、挿入され
た管の外周面へ食い込み可能な複数のロック爪に形成さ
れたロック部と、 両端が開放された筒状に形成され、前記継手本体部内へ
軸線方向へ移動可能に配され、後端部分は継手本体部の
後端より常時外方へ突出し、先端部分は常時前記ロック
部内に位置し、継手本体部の先端方向へ押動された際に
はロック部を前記先端方向へ押動すると共に、先端部分
で前記ロック爪を外側へ弾性変形させることにより、前
記管の外周面からロック爪を解放する解放部と、 前記継手本体部内に設けられ、前記ロック爪が前記管の
外周面へ食い込んだ際にはロック爪と当接してロック爪
の外側方向への弾性変形を規制し、前記解放部と前記ロ
ック部が前記先端方向へ押動され、解放部の先端部分が
ロック爪を外側へ弾性変形させる際には解放部との間で
ロック部の後端部分を挟持可能な規制部とを具備するこ
とを特徴とする管継手。
1. A joint main body formed in a tubular shape with both ends open, and a tubular main body formed with both ends open, disposed movably in the axial direction into the joint main body, and having a tip portion of a peripheral shape. Divided into directions and elastically deformed inward, the tip of which is formed into a plurality of lock claws that can bite into the outer peripheral surface of the inserted tube, and a tubular shape with both ends open, It is arranged in the joint body so as to be movable in the axial direction, the rear end portion always projects outward from the rear end of the joint body portion, the tip portion is always located inside the lock portion, and is pushed in the tip direction of the joint body portion. When released, the lock portion is pushed toward the distal end, and the distal end portion elastically deforms the lock pawl to release the lock pawl from the outer peripheral surface of the pipe, and the joint body. Is provided inside the part, and the lock claw is When it digs into the outer peripheral surface of the pipe, it abuts on the lock claw to restrict the elastic deformation of the lock claw in the outward direction, and the release part and the lock part are pushed in the distal direction, and the distal end part of the release part. Is provided with a restriction portion capable of sandwiching the rear end portion of the lock portion with the release portion when elastically deforming the lock claw outward.
JP4082679A 1992-03-04 1992-03-04 Pipe fitting Expired - Lifetime JPH0794879B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4082679A JPH0794879B2 (en) 1992-03-04 1992-03-04 Pipe fitting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4082679A JPH0794879B2 (en) 1992-03-04 1992-03-04 Pipe fitting

Publications (2)

Publication Number Publication Date
JPH05248581A true JPH05248581A (en) 1993-09-24
JPH0794879B2 JPH0794879B2 (en) 1995-10-11

Family

ID=13781111

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4082679A Expired - Lifetime JPH0794879B2 (en) 1992-03-04 1992-03-04 Pipe fitting

Country Status (1)

Country Link
JP (1) JPH0794879B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0361698A1 (en) * 1988-09-05 1990-04-04 Mitsubishi Petrochemical Company Limited Carbon-containing magnetic metal powder
US6447019B1 (en) * 1999-02-18 2002-09-10 Smc Kabushiki Kaisha Tube joint
US6612623B2 (en) * 2000-10-19 2003-09-02 Armaturenfabrik Hermann Voss Gmbh & Co. Kg Connecting device for pipes conduction pressure medium
KR101105265B1 (en) * 2009-09-22 2012-01-17 우성전기공업 주식회사 Connector connecting the hose

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6413914U (en) * 1987-07-16 1989-01-24

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6413914U (en) * 1987-07-16 1989-01-24

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0361698A1 (en) * 1988-09-05 1990-04-04 Mitsubishi Petrochemical Company Limited Carbon-containing magnetic metal powder
US6447019B1 (en) * 1999-02-18 2002-09-10 Smc Kabushiki Kaisha Tube joint
US6612623B2 (en) * 2000-10-19 2003-09-02 Armaturenfabrik Hermann Voss Gmbh & Co. Kg Connecting device for pipes conduction pressure medium
KR101105265B1 (en) * 2009-09-22 2012-01-17 우성전기공업 주식회사 Connector connecting the hose

Also Published As

Publication number Publication date
JPH0794879B2 (en) 1995-10-11

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