JP3340553B2 - Pipe fittings - Google Patents
Pipe fittingsInfo
- Publication number
- JP3340553B2 JP3340553B2 JP07126594A JP7126594A JP3340553B2 JP 3340553 B2 JP3340553 B2 JP 3340553B2 JP 07126594 A JP07126594 A JP 07126594A JP 7126594 A JP7126594 A JP 7126594A JP 3340553 B2 JP3340553 B2 JP 3340553B2
- Authority
- JP
- Japan
- Prior art keywords
- joint
- annular
- spherical
- peripheral surface
- outer peripheral
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
- F16L27/127—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement with means for locking the longitudinal adjustment or movement in the final mounted position
- F16L27/1274—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement with means for locking the longitudinal adjustment or movement in the final mounted position by means of a swivel nut
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、パイプ接続部を任意の
方向へ揺動または屈曲することができる管継手に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint capable of swinging or bending a pipe connection in an arbitrary direction.
【0002】[0002]
【従来の技術】従来、この種の管継手として、例えば特
開平4−236884号公報を挙げることができ、同公
報によると、連繋部材の両端に第1,第2の球状外面を
それぞれ設け、第1のYパッキンを介して第1の球状外
面を第1の継手部材内の第1の球状内面に装入し、第1
の押さえリングで第1のベアリングボールの列を押さえ
ることで第1の球状外面を揺動自在に保持し、一方、第
2のYパッキンを介して第2の球状外面を第2の継手部
材内の第2の球状内面に装入し、第2の押さえリングで
第2のベアリングボールの列を押さえることで第2の球
状外面を揺動自在に保持したものである。2. Description of the Related Art Conventionally, as this type of pipe joint, for example, Japanese Patent Application Laid-Open No. Hei 4-236883 can be cited. According to the same publication, first and second spherical outer surfaces are provided at both ends of a connecting member, respectively. The first spherical outer surface is inserted into the first spherical inner surface in the first joint member via the first Y packing,
The first spherical outer surface is swingably held by pressing the first row of bearing balls with the pressing ring of the first ring, while the second spherical outer surface is held in the second joint member via the second Y packing. The second spherical outer surface is swingably held by loading the second row of bearing balls with the second pressing ring by inserting the second spherical inner surface.
【0003】また、実開昭56−135587号公報に
は、継手本体に形成した内径室の奥部にゴム弁を配設
し、球形継手の端部に形成した球部を継手本体の内径室
に装入し、この内径室の開口部近傍に設けられた滑球の
列で球形継手の球部を揺動自在に保持したものが知られ
ている。即ち、上記したこれらの従来例は、何れも、第
1,第2の球状外面や球部等の球面部材を第1,第2の
Yパッキンやゴム弁等のシール部材に摺接させ、第1,
第2のベアリングボールや滑球等のボール部材で球面部
材とシール部材の気密性を保ちつつ、球面部材とボール
部材を点接触で支受することで揺動性を確保しようとし
たものである。これらの管継手は、圧縮空気を駆動源と
したスプレー、ハンマ等のエアーツールの工具本体と圧
縮空気を供給するエアーホースとの連結や可動する機械
装置と流体ホースとの接続に用いられることが多い。In Japanese Utility Model Laid-Open Publication No. 56-135587, a rubber valve is provided at the back of an inner diameter chamber formed in a joint body, and a spherical portion formed at an end of a spherical joint is connected to an inner diameter chamber of the joint body. And the ball portion of the spherical joint is swingably held by a row of sliding balls provided near the opening of the inner diameter chamber. That is, in each of these conventional examples described above, the spherical members such as the first and second spherical outer surfaces and the spherical portions are brought into sliding contact with the seal members such as the first and second Y packings and rubber valves. 1,
A ball member such as a second bearing ball or a sliding ball is used to maintain the airtightness of the spherical member and the seal member and to secure the rocking property by receiving the spherical member and the ball member in point contact. . These fittings may be used to connect the tool body of an air tool such as a spray or hammer driven by compressed air to an air hose that supplies compressed air, or to connect a movable mechanical device to a fluid hose. Many.
【0004】[0004]
【発明が解決しようとする課題】しかしながら、上記し
た従来例の構成を有する管継手をエアーツールの接続に
用いた場合、特に、ハンマ、ネイラ、タガネ、リベッ
タ、レンチ等のような工具本体に上記した管継手を用い
た場合、工具本体に伝わる振動による衝撃や流体の急激
な供給・停止の繰り返しにより生ずる脈流による衝撃が
管継手にまで及ぶことになるため、管継手の球面部材は
これを支受するボール部材が衝撃を受け、上記した球面
部材の外表面にボール部材との衝撃による打痕が生じる
という課題を有している。However, when a pipe joint having the configuration of the above-mentioned conventional example is used for connecting an air tool, the above-mentioned pipe joint is particularly used for a tool body such as a hammer, a nail, a rag, a riveter and a wrench. When a pipe joint is used, the impact due to the vibration transmitted to the tool body and the impact due to the pulsating flow caused by the repeated supply and stop of the fluid suddenly reaches the pipe joint. There is a problem that the ball member to be supported receives an impact, and a dent due to the impact with the ball member is generated on the outer surface of the spherical member.
【0005】球面部材の外表面に打痕が付くと、これを
支受するボール部材とシール部材との気密性にも影響
し、そのシール性が損なわれることになる。また、この
球面部材の外表面はシール面であり、管継手が揺動、屈
曲した際にこのような打痕が付いた部分がシール部材と
の摺接位置に来ると良好なシール性が得られず、流体漏
れを起すことになる。さらに、上記した従来例は、球面
部材を多数のボール部材の列で支受しているが、管継手
の組立て工程において多数のボール部材を用いることは
非常に手間と時間の掛かる作業を強いられ、製造コスト
が高くなるという課題を有している。このように従来例
の管継手は耐久性やシール性、組立てに手間の掛かる構
成等、改良すべき課題が残されており、これらの諸課題
を解決した管継手の開発が望まれていた。[0005] When a dent is formed on the outer surface of the spherical member, it also affects the airtightness between the ball member and the seal member that receive the dent, and the sealing property is impaired. Also, the outer surface of the spherical member is a sealing surface, and when the pipe joint swings and bends, a good sealing property can be obtained if the portion with such a dent comes to a sliding contact position with the sealing member. And will cause fluid leakage. Further, in the above-described conventional example, the spherical member is supported by a row of a large number of ball members. However, using a large number of ball members in the process of assembling the pipe joint requires an extremely labor- and time-consuming operation. However, there is a problem that the manufacturing cost increases. As described above, the conventional pipe joints have problems to be improved, such as durability, sealability, and a structure requiring time for assembly, and the development of a pipe joint that solves these problems has been desired.
【0006】本発明は、このような従来例の課題に鑑み
て開発されたものであり、良好な揺動・屈曲性とシール
性を兼ね備え、しかも、組立て作業を容易に行うことが
できる管継手を提供することを目的とする。The present invention has been developed in view of such problems of the prior art, and has a good rocking / bending property and a sealing property, and can be easily assembled. The purpose is to provide.
【0007】[0007]
【課題を解決するための手段】上記の目的を達成するた
めに、接続主筒体の内部に継手本体の先端に設けられた
球面部を挿入し、該球面部の両側より環状部材でシール
リングを介在して摺接させて設け、該環状部材の一方を
前記接続主筒体の先端部で前記継手本体を揺動自在に固
定させると共に、前記接続主筒体の内周面に、継手本体
の球面部との間に介装した両環状部材との間にシールリ
ングを介在させる空間を形成するための段部を設けたこ
とを特徴とする構成を採用した。この場合、上記の一方
の環状部材には、外周面の一部に環状溝を形成させる
か、或は、前記の一方の環状部材の後端と接続主筒体の
当接部との間に皿ばねを設けるのが好ましい。また、前
記環状部材の一方は、リング部材と外周を保持した保持
ブッシュからなり、該保持ブッシュを介して前記接続主
筒体の先端部で前記継手本体を揺動自在に固定させる。
更に、上記した継手本体の途中に環状の係止段部を形成
し、この係止段部に筒状体の伸縮カバーの一端部を係止
し、かつ伸縮カバーの他端を前記した球面部の外周面に
摺接させた環状部材の外周位置に係止させると共に、継
手本体の球面部の先端側外周面に環状部材を介して接続
主筒体を設け、この接続主筒体の先端部で上記伸縮カバ
ーの他端部を固着させるように構成することもでき、筒
状体の伸縮カバーは途中に折り畳部を有し、且つ、両端
に係止リング部を設けるのが好ましい。In order to achieve the above object, a spherical portion provided at the tip of a joint body is inserted into a connecting main cylinder, and a seal ring is formed by annular members from both sides of the spherical portion. and interposed provided by sliding contact, the annular member while swingably by fixing the fitting body at the distal end portion of the connecting main cylindrical body of Rutotomoni, the inner peripheral surface of the front Symbol connecting main cylindrical body, A stepped portion for forming a space for interposing a seal ring between the two annular members interposed between the spherical portion of the joint body and the annular member is provided. In this case, the one annular member is formed with an annular groove in a part of the outer peripheral surface, or between the rear end of the one annular member and the contact portion of the connection main cylinder. Preferably, a disc spring is provided. One of the annular members includes a ring member and a holding bush that holds the outer periphery. The joint main body is swingably fixed at the distal end of the main connection cylinder via the holding bush.
Further, an annular locking step is formed in the middle of the above-mentioned joint main body, one end of the cylindrical elastic cover is locked to the locking step, and the other end of the elastic cover is the spherical part described above. And a connecting main cylinder is provided on the outer peripheral surface of the spherical portion of the joint body on the distal end side via the annular member, and the distal end of the connecting main cylinder is provided. It is also possible to fix the other end of the above-mentioned telescopic cover, and it is preferable that the telescopic cover of the tubular body has a folding part in the middle and a locking ring part at both ends.
【0008】[0008]
【作用】本発明は上記のように構成したので、継手本体
の球面部の外周面は接続主筒体に内装された2つの環状
部材と密接状態で摺接し、この継手本体は接続主筒体に
対して任意の方向に揺動・屈曲が可能となる。この場
合、一方の環状部材は、その外周面に環状溝を形成して
弾発部を設けているので、継手本体の球面部の遊びを無
くすように保持することができ、不用意なガタつきを生
じることがない。Since the present invention is constructed as described above, the outer peripheral surface of the spherical portion of the joint body is in sliding contact with the two annular members housed in the connection main cylinder in close contact with each other. Can be swung and bent in any direction. In this case, since one of the annular members has an elastic groove formed on the outer peripheral surface thereof, the elastic member can be held so as to eliminate play of the spherical portion of the joint body, so that there is an inadvertent play. Does not occur.
【0009】管継手が衝撃を受けた際に、この環状溝が
緩衝作用をなし、球面部の外周面と環状部材の摺接面は
密接状態を維持することができる。しかも、環状部材の
環状溝が管継手に伝わる衝撃や振動を吸収するので、球
面部の外周面に打痕等のキズを付けるようなことは皆無
であり、管継手の耐久性を向上させることができる。さ
らに、2つの環状部材の間に形成される空間に設けたシ
ールリングによれば、球面部の外周面と接続主筒体の内
周面の気密性を高めることができ、継手本体の揺動・屈
曲の際の流体の漏れを完全に防いでいる。When the pipe joint receives an impact, the annular groove serves as a buffer, and the outer peripheral surface of the spherical portion and the sliding contact surface of the annular member can be kept in close contact with each other. In addition, since the annular groove of the annular member absorbs the shock and vibration transmitted to the pipe joint, there is no such thing as dents or the like on the outer peripheral surface of the spherical portion, and the durability of the pipe joint is improved. Can be. Further, according to the seal ring provided in the space formed between the two annular members, the airtightness between the outer peripheral surface of the spherical portion and the inner peripheral surface of the connection main cylinder can be improved, and the swing of the joint body can be improved. -Fluid leakage during bending is completely prevented.
【0010】また、本発明の管継手は可動部分に筒状体
の伸縮カバーを設けおり、この伸縮カバーの一端が継手
本体の係止段部に密着すると共に、他端が環状部材の外
周位置に密着させているので、球面部の外周面と環状部
材の摺接面の間にゴミ、埃、水、油等が浸入して継手本
体の摺動性を低下させることがない。しかも、伸縮カバ
ーには折り畳部を形成したので、継手本体が揺動・屈曲
した際に、伸縮カバーが引き攣られて外れたり破れたり
することがない。また、構成部品を少なくしているので
簡単に組み立てることができる。Further, the pipe joint of the present invention is provided with a tubular elastic cover at the movable portion, and one end of the elastic cover is in close contact with the locking step of the joint body, and the other end is located at the outer peripheral position of the annular member. , Dust, water, oil and the like do not enter between the outer peripheral surface of the spherical portion and the sliding contact surface of the annular member, thereby reducing the slidability of the joint body. Moreover, since the foldable portion is formed on the telescopic cover, the telescopic cover is not twitched and detached or broken when the joint body swings or bends. Also, since the number of components is reduced, it can be easily assembled.
【0011】[0011]
【実施例】本発明における管継手を図面に示した一実施
例に適用した例を詳述する。図1及び図2に示されるよ
うに、継手本体1の先端に球面部2を形成し、この球面
部2の外周面3を接続主筒体5の奥部に内装した、一方
の環状部材である環状ブッシュ6の摺接面7に摺接さ
せ、次いで、断面X形状のシールリング8を配設し、さ
らに、保持ブッシュ9で保持された、もう一方の環状部
材であるリング部材10の摺接面11を球面部2の外周
面3に摺接させている。そして、継手本体1の途中位置
に形成した環状の係止段部4に伸縮カバー12の一端を
密着させ、他方、保持ブッシュ9の係止段部13に伸縮
カバー12の他端を密着させ、接続主筒体5の先端部の
薄肉部14を求心方向にカシメて伸縮カバー12を固着
することにより保持ブッシュ9が固定され、前記球面部
2が揺動自在に保持されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example in which the pipe joint of the present invention is applied to one embodiment shown in the drawings will be described in detail. As shown in FIGS. 1 and 2, a spherical portion 2 is formed at the distal end of the joint body 1, and an outer peripheral surface 3 of the spherical portion 2 is provided inside a connection main cylinder 5 at one end. Sliding contact is made with a sliding contact surface 7 of a certain annular bush 6, then a seal ring 8 having an X-shaped cross section is provided, and further, a ring member 10, which is another annular member, held by a holding bush 9. The contact surface 11 is brought into sliding contact with the outer peripheral surface 3 of the spherical portion 2. Then, one end of the telescopic cover 12 is brought into close contact with the annular locking step 4 formed at an intermediate position of the joint body 1, while the other end of the telescopic cover 12 is brought into close contact with the locking step 13 of the holding bush 9, The holding bush 9 is fixed by caulking the thin portion 14 at the distal end of the connection main cylinder 5 in the centripetal direction and fixing the elastic cover 12, and the spherical portion 2 is held swingably.
【0012】より具体的に詳述すると、継手本体1は、
先端に球面部2が形成され、後端部に管継手のソケット
(図示せず)の施錠部材と係合する係止溝15aを有す
るプラグ部15が形成され、継手本体1の軸線方向には
流体流路16が貫通形成されている。なお、継手本体1
中程に形成された係止段部4は、図2中の2点鎖線で示
されるような形状としてもよい。一方、接続主筒体5
は、その奥部に環状ブッシュ6を受け止める段状または
テーパ状の当接部17が形成され、接続主筒体5の内周
面18先端部近傍には保持ブッシュ9を受け止めるテー
パ状または段状の保持段部19が形成され、先端部には
薄肉部14が形成されている。More specifically, the joint body 1 is
A spherical portion 2 is formed at the front end, and a plug portion 15 having a locking groove 15a for engaging with a locking member of a socket (not shown) of a pipe joint is formed at a rear end portion. A fluid channel 16 is formed through. The joint body 1
The locking step 4 formed in the middle may be shaped as shown by a two-dot chain line in FIG. On the other hand, the connection main cylinder 5
A stepped or tapered abutting portion 17 for receiving the annular bush 6 is formed in the inner part thereof, and a tapered or stepped shape for receiving the holding bush 9 near the tip of the inner peripheral surface 18 of the connection main cylinder 5. Is formed, and a thin portion 14 is formed at the tip.
【0013】接続主筒体5の後端にはエアーツール等
(図示せず)を接続する雄ねじ部20が形成されると共
に、継手本体1の流体流路16に連通する流路21が形
成されている。この継手本体1及び接続主筒体5は、例
えばステンレス、鋼鉄、真鍮、その他の金属材料で形成
することができる。なお、本実施例では、図6に示され
るように、継手本体1にはプラグ部15を形成し、接続
主筒体5は胴部を略六角形のボルト様に形成したが、こ
れらの形状は実施に応じて任意である。また、接続主筒
体5の後端に雄ねじ部20を形成したが、これらには他
の接続手段、例えば雌ねじ、ホースニップル、ソケッ
ト、フランジ等の接続手段を設けて実施することができ
る。また、継手本体1のプラグ部15に替えて、例えば
ソケット、ホースニップル、ねじ形状、その他の接続手
段を実施に応じて適宜に選択する。At the rear end of the connection main cylinder 5, a male thread portion 20 for connecting an air tool or the like (not shown) is formed, and a flow path 21 communicating with the fluid flow path 16 of the joint body 1 is formed. ing. The joint body 1 and the connection main cylinder 5 can be formed of, for example, stainless steel, steel, brass, or other metal materials. In this embodiment, as shown in FIG. 6, the plug body 15 is formed in the joint body 1, and the body of the connection main cylinder body 5 is formed like a substantially hexagonal bolt. Is optional depending on the implementation. Further, although the male screw portion 20 is formed at the rear end of the connection main cylinder 5, it can be implemented by providing other connecting means such as a female screw, a hose nipple, a socket, a flange and the like. Further, instead of the plug portion 15 of the joint body 1, for example, a socket, a hose nipple, a screw shape, and other connection means are appropriately selected according to the implementation.
【0014】接続主筒体5の奥部に配設する環状ブッシ
ュ6は環形状の部材であり、継手本体1の球面部2に摺
接する球面状の摺接面7が形成されている。また、この
環状ブッシュ6は、その外周面に環状溝22を形成し、
接続主筒体5の当接部17に接する側にテーパ部23を
形成することで、弾発部24を設けている。つまり、摺
接面7で継手本体1の球面部2を適切にガイドし、弾発
部24で球面部2がガタつかないように押さえている。
本実施例において、この環状ブッシュ6には弾発部24
を設けるので、曲げ弾性率を有するものでなければなら
ず、適宜の樹脂材料、例えばポリアセタール樹脂(PO
M)で形成している。また、本実施例では環状ブッシュ
6に弾発部24を一体に設けているが、図3に示される
ように、環状ブッシュ6の後端に皿ばね24aを設けて
もよい。The annular bush 6 provided in the inner part of the connection main cylinder 5 is a ring-shaped member, and has a spherical sliding contact surface 7 which is in sliding contact with the spherical portion 2 of the joint body 1. The annular bush 6 has an annular groove 22 formed on the outer peripheral surface thereof,
A resilient portion 24 is provided by forming a tapered portion 23 on the side of the connection main cylinder 5 that contacts the contact portion 17. That is, the spherical surface 2 of the joint main body 1 is appropriately guided by the sliding contact surface 7, and the spherical portion 2 is pressed by the resilient portion 24 so as not to rattle.
In this embodiment, the annular bush 6 has a resilient portion 24.
Therefore, the material must have a flexural modulus, and an appropriate resin material, for example, polyacetal resin (PO
M). Further, in the present embodiment, the resilient portion 24 is provided integrally with the annular bush 6, but a disc spring 24a may be provided at the rear end of the annular bush 6 as shown in FIG.
【0015】シールリング8は、図4に示されるよう
に、断面X形状のものを用いている。つまり、シールリ
ング8の内周側には球面部2の外周面3をシールする2
片の球面シール部25,25を形成し、一方、シールリ
ング8の外周側には接続主筒体5の内周面18をシール
する2片の内周面シール部26,26を形成している。
本実施例では、シールリング8の球面シール部25,2
5を内周面シール部26,26より短く形成したものを
用いることで、継手本体1の揺動・屈曲時に球面部2と
環状ブッシュ6との間にシールリング8が喰い込むこと
を防いでいる。このシールリング8は弾性を有する適宜
の高分子材料で形成することができるが、例えばニトリ
ルゴム(NBR)で形成している。As shown in FIG. 4, a seal ring 8 having an X-shaped cross section is used. That is, on the inner peripheral side of the seal ring 8, the outer peripheral surface 3 of the spherical portion 2 is sealed.
On the outer peripheral side of the seal ring 8, two inner peripheral surface seal portions 26, 26 for sealing the inner peripheral surface 18 of the connection main cylinder 5 are formed. I have.
In this embodiment, the spherical seal portions 25 and 2 of the seal ring 8 are used.
5 is formed shorter than the inner peripheral surface seal portions 26, 26, thereby preventing the seal ring 8 from biting between the spherical portion 2 and the annular bush 6 when the joint body 1 swings and bends. I have. The seal ring 8 can be formed of an appropriate polymer material having elasticity, and is formed of, for example, nitrile rubber (NBR).
【0016】リング部材10も、上記した環状ブッシュ
6と同様に環形状の部材であり、継手本体1の球面部2
と密接に摺接する球面状の摺接面11が形成されてい
る。本実施例において、このリング部材10は適宜の樹
脂材料で形成することができるが、上記した環状ブッシ
ュ6と同様に、例えばPOMで形成している。しかし、
このリング部材10は継手本体1の揺動・屈曲性を決定
する部材であるから、特に、潤滑グレードのPOMを用
いることで、球面部2との摩擦係数を安定に保ち継手本
体1の屈曲荷重を軽減している。The ring member 10 is also a ring-shaped member similar to the above-described annular bush 6, and has a spherical portion 2 of the joint main body 1.
And a spherical sliding contact surface 11 which is in close sliding contact with the surface. In this embodiment, the ring member 10 can be formed of an appropriate resin material, but is formed of, for example, POM, similarly to the above-described annular bush 6. But,
Since the ring member 10 is a member that determines the rocking / flexibility of the joint body 1, particularly, by using lubricating grade POM, the coefficient of friction between the ring member 10 and the spherical body portion 2 is kept stable, and the bending load of the joint body 1 is maintained. Has been reduced.
【0017】本実施例において、上記したリング部材1
0は環形状の保持ブッシュ9で保持されている。つま
り、保持ブッシュ9の内周面に段状またはテーパ状の保
持部27が形成され、この保持部27にリング部材10
が保持される。また、保持ブッシュ9の外周面には伸縮
カバー12の端部を密着させるテーパ状の係止段部13
が形成される。さらに、保持ブッシュ9の先端の開口部
28はテーパ状に形成され、このテーパ角度θにより継
手本体1の揺動・屈曲範囲が規制される。本実施例で
は、このテーパ角度θを約30度に形成し、全方位に渡
って最大60度の揺動・屈曲範囲を得ている。なお、こ
の保持ブッシュ9は、前述の継手本体1や接続主筒体5
と同様に、例えばステンレス、鋼鉄、真鍮、その他の金
属材料で形成することができる。In this embodiment, the ring member 1 described above is used.
0 is held by a ring-shaped holding bush 9. That is, a stepped or tapered holding portion 27 is formed on the inner peripheral surface of the holding bush 9, and the ring member 10 is attached to the holding portion 27.
Is held. Further, a tapered locking step 13 for bringing the end of the elastic cover 12 into close contact with the outer peripheral surface of the holding bush 9.
Is formed. Further, the opening 28 at the tip of the holding bush 9 is formed in a tapered shape, and the swing / bending range of the joint body 1 is regulated by the taper angle θ. In the present embodiment, the taper angle θ is formed to be about 30 degrees, and a maximum swinging / bending range of 60 degrees is obtained in all directions. The holding bush 9 is provided with the joint body 1 and the connection main cylinder 5 described above.
Similarly, for example, it can be formed of stainless steel, steel, brass, or other metal materials.
【0018】伸縮カバー12は、図5に示されるような
筒状体を呈しており、両端に環状の係止リング部29,
30が形成される。さらに、係止リング部29には屈曲
部31を介して環状の係止リップ部32が連設されてい
る。なお、本実施例では、屈曲部31を設けているが、
係止リップ部32の内径が係止リング部29の内径より
小さく形成されていれば屈曲部31を設けなくともよ
い。また、この伸縮カバー12の途中位置には折り畳部
33を設け、継手本体1の揺動・屈曲に伴う引き攣れ等
を防止している。この伸縮カバー12は弾性を有する適
宜の高分子材料で形成することができるが、例えばクロ
ロプレンゴム(CR)で形成している。なお、図示した
折り畳部33の形状は、蛇腹状やその他の形状で実施し
てもよい。The telescopic cover 12 has a cylindrical shape as shown in FIG. 5, and has annular locking rings 29 at both ends.
30 are formed. Further, an annular locking lip 32 is connected to the locking ring 29 via a bent portion 31. In this embodiment, the bent portion 31 is provided.
If the inner diameter of the locking lip portion 32 is smaller than the inner diameter of the locking ring portion 29, the bent portion 31 may not be provided. Further, a folding portion 33 is provided at an intermediate position of the elastic cover 12 to prevent the joint body 1 from being twitched due to swinging and bending. The elastic cover 12 can be made of an appropriate polymer material having elasticity, and is made of, for example, chloroprene rubber (CR). In addition, the shape of the illustrated folded portion 33 may be implemented in a bellows shape or another shape.
【0019】上記した各部材1,5,6,8,9,10
及び12は、図1及び図2に示されるように組み立てら
れる。そして、保持ブッシュ9の縁部34を支点として
接続主筒体5の薄肉部14を、求心方向にカシメること
で保持ブッシュ9が接続主筒体5の保持段部19に確実
に当接すると共に、リング部材10を介して球面部2の
外周面3を押圧し、リング部材10の摺接面11と球面
部2の外周面3に、また、環状ブッシュ6の摺接面7と
球面部2の外周面3に密接状態が形成される。このと
き、保持ブッシュ9と環状ブッシュ6によってシールリ
ング8を嵌合する円周溝が形成される。また、保持ブッ
シュ9の係止段部13に密着させた伸縮カバー12の係
止リング部30は接続主筒体5の薄肉部14がカシメら
れる際に固着される。Each of the above members 1, 5, 6, 8, 9, 10
And 12 are assembled as shown in FIGS. Then, the thin portion 14 of the connecting main cylinder 5 is caulked in the centripetal direction with the edge 34 of the holding bush 9 as a fulcrum, so that the holding bush 9 reliably contacts the holding step 19 of the connecting main cylinder 5. The outer peripheral surface 3 of the spherical portion 2 is pressed via the ring member 10, and the sliding surface 11 of the ring member 10 and the outer peripheral surface 3 of the spherical portion 2, and the sliding contact surface 7 of the annular bush 6 and the spherical portion 2 are pressed. Is formed in a close contact state on the outer peripheral surface 3. At this time, a circumferential groove for fitting the seal ring 8 is formed by the holding bush 9 and the annular bush 6. In addition, the locking ring portion 30 of the elastic cover 12 which is brought into close contact with the locking step portion 13 of the holding bush 9 is fixed when the thin portion 14 of the connection main cylinder 5 is crimped.
【0020】次に、本実施例の作用を説明する。本実施
例の管継手は上記のように構成されたので、例えば管継
手をエアーツールの接続に用いた場合、接続主筒体5の
雄ねじ部20は工具本体(図示せず)と螺着され、継手
本体1のプラグ部15には駆動源となる圧縮空気を供給
するエアーホースに取付けられたソケット(図示せず)
が接続され、圧縮空気は継手本体1の流体流路16及び
接続主筒体5の流路21を経て工具本体に供給される。
このとき、継手本体1の球面部2の外周面3は接続主筒
体5に内装されたシールリング8によってシールされ、
且つ、環状ブッシュ6及びリング部材10と密接状態で
摺接し、図6に示されるように、この継手本体1は接続
主筒体5に対して任意の方向に揺動・屈曲が可能とな
る。Next, the operation of this embodiment will be described. Since the pipe joint of the present embodiment is configured as described above, for example, when the pipe joint is used for connection of an air tool, the male screw portion 20 of the connection main cylinder 5 is screwed to a tool body (not shown). A socket (not shown) attached to an air hose for supplying compressed air serving as a driving source is provided in the plug portion 15 of the joint body 1.
Are connected, and the compressed air is supplied to the tool main body through the fluid flow path 16 of the joint main body 1 and the flow path 21 of the connection main cylinder 5.
At this time, the outer peripheral surface 3 of the spherical portion 2 of the joint main body 1 is sealed by a seal ring 8 provided inside the connection main cylinder 5,
In addition, the joint body 1 is in sliding contact with the annular bush 6 and the ring member 10 in close contact with each other, and as shown in FIG.
【0021】本実施例のリング部材10には潤滑グレー
ドのPOMを用いているので、球面部2との摩擦係数を
安定に保ち継手本体1の屈曲荷重を軽減することができ
る。従って、本実施例の管継手を上記したようなエアー
ツールとエアーホースとの接続に用いた場合、管継手の
継手本体1はエアーホースの自重で自然に適切な角度に
揺動・屈曲され、エアーホースが邪魔になる等作業者に
負担を掛けることがない。Since the lubricating grade POM is used for the ring member 10 in this embodiment, the coefficient of friction with the spherical portion 2 can be kept stable, and the bending load of the joint body 1 can be reduced. Therefore, when the pipe joint of the present embodiment is used for connecting the air tool and the air hose as described above, the joint body 1 of the pipe joint is naturally rocked and bent at an appropriate angle by the weight of the air hose, There is no burden on the workers, such as the air hose being in the way.
【0022】一方、環状ブッシュ6は、その外周面に環
状溝22を形成して弾発部24を設けているので、球面
部2は継手本体1の後端方向に付勢されると共に、球面
部2の外周面3は保持ブッシュ9を介してリング部材1
0で支受されているので、継手本体1の球面部2の遊び
を無くすことができ、不用意なガタつきを生じることが
ない。また、管継手が衝撃を受けた際に、この環状溝2
2と弾発部24が緩衝作用をなし、球面部2の外周面3
と環状ブッシュ6の摺接面7には常に密接状態を維持す
ることができる。しかも、環状ブッシュ6の環状溝22
と弾発部24が管継手に伝わる衝撃を吸収するので、球
面部2の外周面3に打痕等のキズを付けるようなことは
皆無であり、管継手の耐久性を向上させることができ
る。On the other hand, the annular bush 6 has an annular groove 22 formed on its outer peripheral surface to provide the resilient portion 24, so that the spherical portion 2 is urged toward the rear end of the joint body 1, and The outer peripheral surface 3 of the portion 2 is connected to the ring member 1 via the holding bush 9.
Since it is supported at 0, play of the spherical portion 2 of the joint main body 1 can be eliminated, so that unintentional rattling does not occur. When the pipe joint receives an impact, the annular groove 2
2 and the resilient portion 24 provide a buffering action, and the outer peripheral surface 3 of the spherical portion 2
And the sliding contact surface 7 of the annular bush 6 can always be kept in close contact. Moreover, the annular groove 22 of the annular bush 6
And the resilient portion 24 absorbs the shock transmitted to the pipe joint, so that the outer peripheral surface 3 of the spherical portion 2 is not scratched by a dent or the like, and the durability of the pipe joint can be improved. .
【0023】さらに、リング部材10と環状ブッシュ6
の間に形成される空間36に設けた断面X形状のシール
リング8によって、内周面シール部26,26は接続主
筒体5の内周面18に密着して完全な気密状態を形成
し、球面シール25,25部は球面部2の外周面3と摺
動自在に完全な気密状態を形成している。このシールリ
ング8の球面シール部25,25を内周面シール部2
6,26より短く形成しているので、継手本体1を図6
に示されるように揺動・屈曲させても、球面シール部2
5,25が環状ブッシュ6やリング部材10の摺接面
7,11に喰い込むことはない。本実施例では、環状ブ
ッシュ6及びリング部材10に樹脂材料を用いているの
で、摺接面7,11にキズがつきにくいのでシールリン
グ8のシール性を向上できる。Further, the ring member 10 and the annular bush 6
The inner peripheral surface sealing portions 26 and 26 are brought into close contact with the inner peripheral surface 18 of the connection main cylindrical body 5 by the seal ring 8 provided in the space 36 formed therebetween to form a complete airtight state. The spherical seals 25, 25 are slidably and completely airtight with the outer peripheral surface 3 of the spherical part 2. The spherical seal portions 25, 25 of the seal ring 8 are
6 and 26, the joint body 1 is
The spherical seal portion 2 can be swung or bent as shown in FIG.
5 and 25 do not bite into the sliding contact surfaces 7 and 11 of the annular bush 6 and the ring member 10. In this embodiment, since the resin material is used for the annular bush 6 and the ring member 10, the sliding surfaces 7, 11 are not easily scratched, so that the sealing property of the seal ring 8 can be improved.
【0024】なお、本実施例の管継手は可動部分に筒形
状の伸縮カバー12を設け、ダストカバーの作用を持た
せている。上述のとおり、この伸縮カバー12の係止リ
ング部29を継手本体1の係止段部4に密着させると共
に、係止リング部30を保持ブッシュ9の係止段部13
に密着させて接続主筒体5の薄肉部14でカシメている
ので、使用中に伸縮カバー12が外れたり、球面部2の
外周面3とリング部材10の摺接面11の間にゴミ、
埃、水、油等が浸入して継手本体1の摺動性を低下させ
たり、球面部2の外周面3にキズを付けることがない。
前記保持ブッシュ9の係止段部13は係止リング部30
を密着させやすいように、軸方向の面をテーパにすると
より効果的である。In the pipe joint of this embodiment, a cylindrical telescopic cover 12 is provided on a movable portion to have the function of a dust cover. As described above, the locking ring 29 of the telescopic cover 12 is brought into close contact with the locking step 4 of the joint body 1, and the locking ring 30 is connected to the locking step 13 of the holding bush 9.
The elastic cover 12 is disengaged during use because the thin portion 14 of the connection main cylinder 5 is closely attached to the main body 5, and dust between the outer peripheral surface 3 of the spherical portion 2 and the sliding contact surface 11 of the ring member 10 is removed.
There is no possibility that dust, water, oil, or the like intrudes to lower the slidability of the joint body 1 or to scratch the outer peripheral surface 3 of the spherical portion 2.
The locking step 13 of the holding bush 9 is provided with a locking ring 30.
It is more effective if the surface in the axial direction is tapered so as to make it easier to adhere.
【0025】さらに、係止リング部29には屈曲部31
を介して環状の係止リップ部32が連設されているの
で、伸縮カバー12の係止段部4における求心方向への
密着性がより確実なものとなっている。この係止段部4
に、図2に示す(2点鎖線)ように、円周溝を設けて係
止リング部29と係止リップ部32を嵌め込むことによ
り、ゴミなどの浸入を向上させることができる。しか
も、伸縮カバー12には折り畳部33を形成したので、
継手本体1が揺動・屈曲した際に、伸縮カバー12が引
き攣られて外れたり破れたりすることがない。また、本
実施例の管継手は、上記したように構成部品を少なくし
ているので簡単に組み立てることができる。The locking ring 29 has a bent portion 31.
Since the annular locking lip portion 32 is continuously provided through the opening, the tightness of the locking step portion 4 of the elastic cover 12 in the centripetal direction is further ensured. This locking step 4
As shown in FIG. 2 (two-dot chain line), by providing a circumferential groove and fitting the locking ring portion 29 and the locking lip portion 32, penetration of dust and the like can be improved. Moreover, since the foldable portion 33 is formed on the telescopic cover 12,
When the joint main body 1 swings or bends, the telescopic cover 12 is not twitched and does not come off or break. Further, the pipe joint of this embodiment can be easily assembled because the number of components is reduced as described above.
【0026】[0026]
【発明の効果】以上の説明で明らかなとおり、本発明の
管継手によれば、以下のような優れた効果を奏する。つ
まり、接続主筒体の内部において継手本体の球面部を2
つの環状部材で支受し、さらに、これら両者の間に形成
される空間にシールリングを配設したので、継手本体は
全方位に渡って自在且つ軽やかにに揺動・屈曲すること
ができるにも係らず、高いシール性を有する揺動・屈曲
型の管継手を提供することができる。この場合、一方の
環状部材に環状溝を設けることで管継手に伝わる衝撃を
和らげることができると共に、球面部の遊びをなくし管
継手の耐久性を向上させることができる。しかも、従来
例のように球面部に打痕等のキズを付け、このキズによ
りシール性の低下を招くことは皆無である。As is apparent from the above description, the pipe joint of the present invention has the following excellent effects. That is, the spherical portion of the joint body is set to 2 inside the connection main cylinder.
One of was支受annular member, further, since the disposed a seal ring in a space formed between these two, the joint body can swing-bend freely and lightly over all directions Nevertheless, it is possible to provide a swing / bend type pipe joint having high sealing properties. In this case, by providing the annular groove in one of the annular members, the impact transmitted to the pipe joint can be reduced, and the play of the spherical portion can be eliminated to improve the durability of the pipe joint. Moreover, as in the conventional example, scratches such as dents are formed on the spherical portion, and the scratches do not cause deterioration in the sealing performance.
【0027】また、管継手の可動部分を覆うように設け
た伸縮カバーは、一端が継手本体の係止段部に確実に密
着すると共に、他端が接続主筒体の薄肉部でカシメられ
て固着されるので、この伸縮カバーは容易に外れること
はなく、球面部の外周面とリング部材の摺接面にゴミや
埃等が浸入して継手本体の摺動性を低下させたり、球面
部の外周面にキズを付けることがない。従って、高い信
頼性と耐久性を長期間に渡って維持することができる。
しかも、本発明の管継手は、継手本体を軽やかに揺動・
屈曲させるために、従来例のように多数のボール部材を
用いていないので製造工程における組立て作業が簡易に
なり、製造コストの削減を図ることができ、安価で信頼
性の高い管継手を提供することができる等の効果を有す
る。Also, the telescopic cover provided to cover the movable part of the pipe joint has one end firmly in contact with the locking step of the joint main body and the other end crimped by the thin portion of the main connecting cylinder. Since the elastic cover is fixed, the elastic cover does not come off easily, and dirt and dust enter the outer peripheral surface of the spherical portion and the sliding contact surface of the ring member to reduce the sliding property of the joint body, or There is no scratch on the outer peripheral surface. Therefore, high reliability and durability can be maintained for a long period of time.
Moreover, the pipe joint of the present invention allows the joint body to swing
Since a large number of ball members are not used to bend unlike the conventional example, the assembling work in the manufacturing process is simplified, the manufacturing cost can be reduced, and a cheap and highly reliable pipe joint is provided. It has effects such as being able to.
【図1】本発明による管継手の一実施例を示す断面図で
ある。FIG. 1 is a sectional view showing an embodiment of a pipe joint according to the present invention.
【図2】図1における接続主筒体のカシメ前の要部拡大
図である。FIG. 2 is an enlarged view of a main part of the connection main cylinder body in FIG. 1 before caulking.
【図3】他の実施例における接続主筒体のカシメ前の要
部拡大図である。FIG. 3 is an enlarged view of a main part of a connection main cylinder body before caulking in another embodiment.
【図4】シールリングの形状を示す拡大断面図である。FIG. 4 is an enlarged sectional view showing a shape of a seal ring.
【図5】伸縮カバーの構造を示す半載断面図である。FIG. 5 is a half-mounted cross-sectional view showing the structure of the telescopic cover.
【図6】本実施例の管継手の揺動・屈曲状態を示す図で
ある。FIG. 6 is a view showing a swinging / bending state of the pipe joint of the present embodiment.
1 継手本体 2 球面部 3 外周面 4 係止段部 5 接続主筒体 6 環状部材(環状ブッシュ) 8 シールリング 10 環状部材(リング部材) 12 伸縮カバー 18 内周面 22 環状溝 29,30 係止リング部 33 折り畳部 DESCRIPTION OF SYMBOLS 1 Joint main body 2 Spherical part 3 Outer peripheral surface 4 Locking step part 5 Connection main cylinder 6 Annular member (annular bush) 8 Seal ring 10 Annular member (ring member) 12 Telescopic cover 18 Inner peripheral surface 22 Annular groove 29, 30 Stop ring part 33 Folding part
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) F16L 27/04 F16L 27/06 F16L 27/12 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) F16L 27/04 F16L 27/06 F16L 27/12
Claims (6)
けられた球面部を挿入し、該球面部の両側より環状部材
でシールリングを介在して摺接させて設け、該環状部材
の一方を前記接続主筒体の先端部で前記継手本体を揺動
自在に固定させると共に、前記接続主筒体の内周面に、
継手本体の球面部との間に介装した両環状部材との間に
シールリングを介在させる空間を形成するための段部を
設けたことを特徴とする管継手。1. A spherical portion provided at the end of a joint main body is inserted into a connection main cylindrical body, and provided on both sides of the spherical portion in sliding contact with a ring member with a ring member interposed therebetween. while swingably by fixing the fitting body at the distal end portion of the connecting main cylindrical body of Rutotomoni, the inner peripheral surface of said connecting main cylindrical body,
Between the two annular members interposed between the spherical part of the joint body
Steps to form a space to interpose the seal ring
A pipe joint characterized by being provided .
部に環状溝を形成した請求項1に記載の管継手。 2. One of the annular members has an outer peripheral surface.
The pipe joint according to claim 1, wherein an annular groove is formed in the portion.
体の当接部との間に皿ばねを設けた請求項1に記載の管
継手。 3. A rear end of said one annular member and a connecting main cylinder.
2. The tube according to claim 1, wherein a disc spring is provided between the body and the abutting portion.
Fittings.
周を保持した保持ブッシュからなり、該保持ブッシュを
介して前記接続主筒体の先端部で前記継手本体を揺動自
在に固定させた請求項1乃至3の何れか1項に記載の管
継手。 4. One of said annular members is outside the ring member.
It consists of a holding bush that holds the circumference.
The joint body is pivoted at the tip end of the connection main cylinder through
The pipe according to any one of claims 1 to 3, wherein the pipe is fixed at a position.
Fittings.
形成し、この係止段部に筒状体の伸縮カバーの一端部を
係止し、かつ伸縮カバーの他端を前記した球面部の外周
面に摺接させた環状部材の外周位置に係止させると共
に、継手本体の球面部の先端側外周面に環状部材を介し
て接続主筒体を設け、この接続主筒体の先端部で上記伸
縮カバーの他端部を固着させた請求項1乃至4の何れか
1項に記載の管継手。 5. An annular locking step is provided in the middle of the joint body.
Form one end of the tubular elastic cover on this locking step.
The outer periphery of the spherical portion which is locked and the other end of the telescopic cover described above
When locked at the outer peripheral position of the annular member
In addition, the outer peripheral surface on the distal end side of the spherical portion of the joint body is
To form a connection main cylinder, and extend the extension at the tip of the connection main cylinder.
5. The shrinkable cover according to claim 1, wherein the other end is fixed.
The pipe joint according to claim 1.
有し、且つ、両端に係止リング部を設けた請求項5に記
載の管継手。 6. The folding cover of the tubular body has a folding part in the middle.
The locking ring portion is provided at both ends.
Pipe fitting.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP07126594A JP3340553B2 (en) | 1994-03-17 | 1994-03-17 | Pipe fittings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP07126594A JP3340553B2 (en) | 1994-03-17 | 1994-03-17 | Pipe fittings |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07260066A JPH07260066A (en) | 1995-10-13 |
JP3340553B2 true JP3340553B2 (en) | 2002-11-05 |
Family
ID=13455726
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP07126594A Expired - Lifetime JP3340553B2 (en) | 1994-03-17 | 1994-03-17 | Pipe fittings |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3340553B2 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003343777A (en) * | 2002-05-30 | 2003-12-03 | Ben:Kk | Pipe device for base isolation |
KR200347218Y1 (en) * | 2004-01-26 | 2004-04-08 | 김석윤 | Joint for Plumbing |
JP2006105302A (en) * | 2004-10-06 | 2006-04-20 | Victaulic Co Of Japan Ltd | Expansion flexible joint |
GB2426308B (en) * | 2005-01-25 | 2008-05-07 | Suk-Yoon Kim | Joint for plumbing |
JP4825008B2 (en) * | 2006-01-11 | 2011-11-30 | 日本ヴィクトリック株式会社 | Ball joint |
KR100952342B1 (en) * | 2008-01-22 | 2010-04-09 | 주식회사 엠스코 | an one touch type tube fitting |
EP2905486B1 (en) | 2014-02-11 | 2019-05-29 | Roller Bearing Company of America, Inc. | Swaged bearing assembly with a flange mounted thereon |
EP3034897B1 (en) | 2014-12-15 | 2020-04-08 | Roller Bearing Company of America, Inc. | Spherical bearing with annular seal having an auxiliary seal leg extending therefrom |
JP6039045B2 (en) * | 2015-12-07 | 2016-12-07 | 日東工器株式会社 | Pipe fitting |
JP7268398B2 (en) * | 2019-02-27 | 2023-05-08 | 株式会社デンソー | High pressure inspection device |
US11053973B2 (en) | 2019-11-08 | 2021-07-06 | Flowserve Management Company | Dry running ball joint mechanical seal |
-
1994
- 1994-03-17 JP JP07126594A patent/JP3340553B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH07260066A (en) | 1995-10-13 |
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