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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