JPH0631662B2 - Pipe fitting - Google Patents
Pipe fittingInfo
- Publication number
- JPH0631662B2 JPH0631662B2 JP20214786A JP20214786A JPH0631662B2 JP H0631662 B2 JPH0631662 B2 JP H0631662B2 JP 20214786 A JP20214786 A JP 20214786A JP 20214786 A JP20214786 A JP 20214786A JP H0631662 B2 JPH0631662 B2 JP H0631662B2
- Authority
- JP
- Japan
- Prior art keywords
- nut member
- rotating means
- cap nut
- inner diameter
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Joints With Pressure Members (AREA)
- Joints Allowing Movement (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、管継手に係り、特に、管にねじれを生じさせ
ないようにしたものである。Description: TECHNICAL FIELD The present invention relates to a pipe joint, and more particularly to a pipe joint in which twisting does not occur.
例えば、ＩＣやＬＳＩ等の半導体工業分野では、微粒子
塵埃等も排除したクリーンルームでの作業となり、製造
作業環境並びに条件は一段と厳しいものとなっている。
この半導体製造において用いられる特殊ガスは、クリー
ンルーム外部より配管を通じてクリーンルーム内に導入
されたが、この特殊ガス中に空気等の他の不要な気体の
分子が混入することは極端に嫌われるため、シールの安
全な管の接続をするために配管そのものはもとより、配
管同士を接続する管継手の超精密度化が要求される。For example, in the field of semiconductor industry such as IC and LSI, the work is performed in a clean room in which fine particle dust and the like are excluded, and the manufacturing work environment and conditions are more severe.
The special gas used in this semiconductor manufacturing was introduced into the clean room from outside the clean room through piping, but it is extremely disliked that other unnecessary gas molecules such as air are mixed into this special gas. In order to safely connect the pipes, not only the pipes themselves, but also the pipe joints that connect the pipes to each other must be made extremely precise.
ところで、従来一般的な管継手は、一対の継手ピース間
にシールパッキンを配設し、一方の継手ピースに他方の
継手ピース側から袋ナット部材を螺合して両継手ピース
を締め付けるものであった。このため、袋ナット部材を
回転して締め付ける際に、他方の継手ピースが一緒に回
転してシールパッキンをねじってしまい、シールパッキ
ンを破損する虞れがあるばかりでなく、他方の継手ピー
スに接続される管をもねじり、管そのものを損なう可能
性があるという欠点がある。この際、シールパッキンと
して金属Ｃリングを用いる場合がありこの場合には、こ
の金属Ｃリングがねじりにより変形してシール力が著し
く低下する特性を有するため、特に問題があった。By the way, a conventional general pipe joint is one in which a seal packing is disposed between a pair of joint pieces, and a cap nut member is screwed into one joint piece from the other joint piece side to tighten both joint pieces. It was Therefore, when the cap nut member is rotated and tightened, the other joint piece may rotate together and twist the seal packing, which may damage the seal packing. There is a drawback in that the pipe to be twisted may damage the pipe itself. In this case, a metal C ring may be used as the seal packing, and in this case, the metal C ring has a characteristic that the metal C ring is deformed by torsion and the sealing force is remarkably reduced, which is a particular problem.
これがため、管自体やシールパッキンに袋ナット部材の
回転に基づくねじり力を加えないようにするために一対
の継手ピース間に回転手段を介装させることが提案され
ている。例えば、実開昭５８−１０４４７４等が挙げら
れる。For this reason, it has been proposed to interpose a rotating means between the pair of joint pieces in order to prevent a twisting force due to the rotation of the cap nut member from being applied to the pipe itself or the seal packing. For example, Jikkai 58-104474 and the like can be mentioned.
一方、前記半導体工業分野に限らずあらゆる産業分野に
おいて機械、機器とともに配管の実装密度を上げて小
型、軽量化すべきとの要請が高い。従って、管継手も例
外でなく可能な限り小型、特に外径寸法も小さくするこ
とが求められている。このことは配管の組立、分解さら
にはメンテナンスの観点からも望まれている。On the other hand, there is a strong demand not only in the semiconductor industry field but also in all industrial fields to increase the packaging density of pipes as well as machinery and equipment to reduce the size and weight. Therefore, the pipe joints are no exception, and it is required that the pipe joints be as small as possible, especially the outer diameter dimension. This is desired from the viewpoint of assembling, disassembling, and maintaining the pipes.
ここに、従来の管継手には次のような問題点を有してい
た。Here, the conventional pipe joint has the following problems.
すなわち、前記回転手段は袋ナット部材の形態上その開
放側から挿入しなければならないのでいきおい回転手段
の外径を袋ナット部材の内径より小さくしなければなら
ない。従って、回転手段の許容し得る動荷重が制約され
るので回転手段を採用した割にはその実効が低く依然と
して管にねじりを加えてしまうという事態を招来させて
いた。このことはより完全なシールが求められる精巧な
管継手程重大な問題となっていた。That is, since the rotating means must be inserted from the open side due to the shape of the cap nut member, the outer diameter of the rotating means must be made smaller than the inner diameter of the cap nut member. Therefore, since the allowable dynamic load of the rotating means is restricted, the effect is low in spite of the use of the rotating means, which causes a situation in which the pipe is still twisted. This has been a serious problem for delicate pipe joints that require a more complete seal.
一方、十分な動荷重を許容できる回転手段を採用すると
きには管継手自体が非常に大きくなりその小型化に反す
るものとなり採用する機械、機器の大型化、取扱不便を
招くばかりか管継手自体が配管に対して外力となり管の
屈曲をも誘発してしまうという問題もあった。On the other hand, when a rotating means that can allow a sufficient dynamic load is adopted, the pipe joint itself becomes very large, which is contrary to the miniaturization of the machine and equipment. On the other hand, there was a problem that it became an external force and also induced the bending of the pipe.
これに対し、本出願人は、袋ナット部材に挿入用の複数
溝を設け、あるいは袋ナット部材を２分割型として大径
の回転手段を装着した管継手を先に出願したが、前者の
溝方式の場合には雌ネジを変形させ円滑螺合と完全シー
ルが妨げられ、後者の２分割方式では強度が低下したり
固定方法に無理を生じるという欠点があるばかりか、両
方式ともにその加工、組立等が複雑となり実務上経済的
に受入れ難いという致命的欠陥があった。On the other hand, the present applicant previously applied for a pipe joint in which a cap nut member is provided with a plurality of grooves for insertion, or the cap nut member is divided into two parts and a large-diameter rotating means is attached. In the case of the method, the female screw is deformed to prevent smooth screwing and complete sealing, and the latter two-part method has the drawbacks of reduced strength and unreasonable fixing method. There was a fatal defect that assembly was complicated and it was difficult to accept economically in practice.
本発明は、配管にねじり力を伝達させないで安全なシー
ル性を保障できる管継手を提供することを目的とする。An object of the present invention is to provide a pipe joint which can ensure a safe sealing property without transmitting a twisting force to a pipe.
本発明は、回転手段の許容荷重がそのベアリング球の大
きさと個数および球の配設直径に比例的に増大するとい
う基本的技術事項にたちかえりかつそれを巧に利用して
袋ナット部材の雌ネジの内径よりも大きな外径の回転手
段を装着できるようして上記従来の問題点を除去するも
のである。The present invention has returned to the basic technical matter that the allowable load of the rotating means increases in proportion to the size and number of the bearing balls and the diameter of the balls arranged, and by making good use of this, the female nut of the cap nut member can be used. The above-mentioned conventional problems are eliminated by making it possible to mount a rotating means having an outer diameter larger than the inner diameter of the screw.
これがため、一方の継手ピースに設けられた雄ネジと他
方の継手ピースに被嵌された袋ナット部材の雌ネジとを
螺合させるともに他方の継手ピースと袋ナット部材との
間に回転手段を介在させて両管を接続する管継手におい
て、前記袋ナット部材の袋底側内部に前記雌ネジの内径
よりも大径の拡内径部を設け、前記雌ネジの内径よりも
大径の前記回転手段の対向外周面を前記雌ネジの内径以
下の寸法に切欠し、該回転手段をその切欠部分を前記袋
ナット部材の径方向に向けた横向きとして前記袋ナット
部材の開放側から挿入し、前記回転手段を前記拡内径部
内で方向転換させて前記拡内径部に装着させ、雌ネジの
内径よりも大径の回転手段を内装するよう構成し前記目
的を達成するのである。Therefore, the male screw provided on the one joint piece and the female screw of the cap nut member fitted on the other joint piece are screwed together, and the rotating means is provided between the other joint piece and the cap nut member. In a pipe joint that connects both pipes by interposing, an expanded inner diameter portion having a diameter larger than the inner diameter of the female screw is provided inside the bag bottom side of the cap nut member, and the rotation having a diameter larger than the inner diameter of the female screw. The opposing outer peripheral surface of the means is notched to a size equal to or less than the inner diameter of the female screw, and the rotating means is inserted from the open side of the cap nut member with the notched portion being laterally directed in the radial direction of the cap nut member, The rotating means is turned inside the expanded inner diameter portion and mounted on the expanded inner diameter portion, and the rotating means having a diameter larger than the inner diameter of the female screw is installed to achieve the above object.
従って、対向外周面を切欠しておいた回転手段を袋ナッ
ト部材の開放側から横向きにしてその拡内径部に挿入
し、向きを変えて安定姿勢のもとに回転手段を装着する
ことができる。ここに、袋ナット部材の雌ネジの内径よ
りも大きな外径の回転手段を装着できるから管継手全体
の小型化が達成できるとともに許容荷重を飛躍的に増大
できるので配管にねじり力を付加させないで管接続をす
ることができる。また、ねじり力を付加させないのでシ
ールパッキンを変形、破損させることがなく完全シール
保障できる。Therefore, the rotating means having the opposite outer peripheral surface cut out can be laterally inserted from the open side of the cap nut member into the expanded inner diameter portion, and the direction can be changed to mount the rotating means in a stable posture. . Since a rotating means having an outer diameter larger than the inner diameter of the female screw of the cap nut member can be mounted here, downsizing of the entire pipe joint can be achieved and the allowable load can be dramatically increased, so that a twisting force is not applied to the pipe. A pipe connection can be made. Further, since no twisting force is applied, the seal packing is not deformed or damaged, and a complete seal can be guaranteed.
本発明に係る管継手の一実施例を図面を参照して詳細に
説明する。An embodiment of a pipe joint according to the present invention will be described in detail with reference to the drawings.
この実施例の管継手は第１図ないし第５図に示される如
く、一方の継手ピース１０、他方の継手ピース２０、袋
ナット部材３０、シールパッキン４０および回転手段で
あるスラストベアリング５０とから形成され、またリテ
ーナ６０が設けられている。As shown in FIGS. 1 to 5, the pipe joint of this embodiment is formed of one joint piece 10, the other joint piece 20, a cap nut member 30, a seal packing 40 and a thrust bearing 50 which is a rotating means. In addition, a retainer 60 is provided.
一方の継手ピース１０は、一方の管１５に一体的であっ
て先端側にシールパッキン４０の受部１２が設けられ、
外周面には雄ネジ１１が刻設されている。他方の継手ピ
ース２０は他方の管２５に一体的であって先端側にはシ
ールパッキン４０を所定の位置で押圧するための凸条部
２１が形成されている。The one joint piece 10 is integral with the one pipe 15, and the receiving portion 12 of the seal packing 40 is provided on the tip side thereof.
A male screw 11 is engraved on the outer peripheral surface. The other joint piece 20 is integral with the other pipe 25, and a ridge 21 for pressing the seal packing 40 at a predetermined position is formed on the tip end side.
また、袋ナット部材３０は、全体とし六角ナット形状と
され、袋底側３７には拡内径部３５が設けられかつ開放
側３１には雌ネジ３３が刻設されている。袋底側３７に
は内壁面３９に交叉させた貫通孔３８が設けられてい
る。Further, the cap nut member 30 is in the shape of a hexagonal nut as a whole, and the bag bottom side 37 is provided with an enlarged inner diameter portion 35 and the opening side 31 is engraved with a female screw 33. The bag bottom side 37 is provided with a through hole 38 intersecting the inner wall surface 39.
ここに、拡内径部３５の内径Ｄｅは13.5mmとされ、雌ネ
ジ３３は内径Ｄｓが12.9mmの下穴に刻設した9/16-18UNF
ネジである。なお、拡内径部３５の軸方向寸法は回転手
段との関係で後記する。Here, the inner diameter De of the enlarged inner diameter portion 35 is set to 13.5 mm, and the female screw 33 is 9 / 16-18UNF in which the inner diameter D s is engraved in the prepared hole of 12.9 mm.
It is a screw. The axial dimension of the expanded inner diameter portion 35 will be described later in relation to the rotating means.
また、回転手段であるスラストベアリング５０は、外径
が13.3mmであって、１１個の球５０Ｂを内蔵するもので
合金鋼を主とした材質からなり250Kg のスラスト荷重を
持つものである。因に、一般的に、外径が12mmの同種ス
ラストベアリングでは142Kg 程度のスラスト荷重しか許
容できない。同様に外径が15mmの場合には310Kg のスラ
スト荷重をもつことができる。The thrust bearing 50, which is a rotating means, has an outer diameter of 13.3 mm, contains 11 balls 50B, is made of a material mainly made of alloy steel, and has a thrust load of 250 kg. Incidentally, in general, a thrust bearing of the same type with an outer diameter of 12 mm can only allow a thrust load of approximately 142 kg. Similarly, when the outer diameter is 15 mm, a thrust load of 310 kg can be obtained.
ところで、回転手段たるスラストベアリング５０は、上
記の１１個の球５０Ｂ（図示省略のリテーナで保持され
ている）を両側で受ける一対の受板５０Ａ，５０Ｃを含
み形成されており、受板５０Ａ，５０Ｃの外径Ｄｏは前
記拡内径部３５の内径Ｄｅ（１３．５mm）とほぼ同じも
のとされ、かつ対向外周面を切欠（第３図、第４図参
照）して袋ナット部材３０の雌ネジ３３の内径Ｄｓより
も小寸法であるＤｍの切欠部５１，５１が設けられてい
る。なお、内径Ｄｉは袋ナット部材３０の貫通口３８の
内径Ｄｔとほぼ等しく他方の管２５を通すことができ
る。たちかえって袋ナット部材３０の拡内径部３５の軸
方向寸法Ｌは回転手段たるスラストベアリング５０の全
体（５０Ａ，５０Ｂ，５０Ｃ）を一体としてまたは最後
に挿通させた受板（５０Ａ）を方向転換すなわち回動が
できるに十分な寸法とされている。つまり、（５０Ａ，
５０Ｂ，５０Ｃ）を一体的として挿入するときにはＬ＝
Ｄｏでよく、箇所に挿入するときは第３図で示した最初
に挿入される受板（５０Ｃ）と受板（５０Ａ）との間の
寸法ＴとＤｏを加えたもの即ちＬ＝Ｔ＋Ｄｏとすればよ
い。しかし、第５図（Ｄ）に見られるようにその片側半
分を雌ネジ３３が設けられた空間に突出させて回転する
ことを考えると とすることもできる。結局、拡内径部３５の内径Ｄｅま
たは回転手段たるスラストベアリング５０の外径Ｄｏと
袋ナット部材３０の雌ネジ３３の内径Ｄｓとの関係から
決定すべきである。したがって、 とすることが可能となる場合があり得る。By the way, the thrust bearing 50, which is a rotating means, is formed to include a pair of receiving plates 50A and 50C that receive the eleven balls 50B (held by a retainer (not shown)) on both sides. The outer diameter D o of 50 C is substantially the same as the inner diameter D e (13.5 mm) of the expanded inner diameter portion 35, and the opposite outer peripheral surface is notched (see FIGS. 3 and 4) to form the cap nut member 30. Notch portions 51, 51 having a dimension smaller than the inner diameter D s of the female screw 33 are provided. The inner diameter D i is substantially equal to the inner diameter D t of the through hole 38 of the cap nut member 30 and the other pipe 25 can be passed through. On the contrary, the axial dimension L of the expanded inner diameter portion 35 of the cap nut member 30 changes the direction of the receiving plate (50A) in which the thrust bearing 50 as a rotating means (50A, 50B, 50C) is integrally or finally inserted. The dimensions are sufficient to allow rotation. That is, (50A,
50B, 50C) is inserted as a unit, L =
Well D o, i.e. L = T + D as a plus dimension T and D o between the receiving plate (50C) and the receiving plate (50A) which is inserted into the first shown in FIG. 3 when inserting the point It should be o . However, considering that one half is projected into the space provided with the female screw 33 to rotate as shown in FIG. 5 (D). Can also be After all, it should be determined from the relationship between the inside diameter D s of the outer diameter D o and the cap nut member 30 of the female thread 33 of the inner diameter D e or rotation means serving thrust bearing 50 of the expansion bore 35. Therefore, It may be possible to
シールパッキン４０は、一方の継手ピース１０の受部１
２に支持されるとともに他方の継手ピース２０の突条部
２１で押圧され両管１５，２５を水密的に接続シールす
るものである。なお、検査等のために装着されたシール
パッキン４０の位置に相当する位置の袋ナット部材３０
には外側から内側に貫通する穴が設けられているが図で
は省略している。The seal packing 40 is the receiving portion 1 of the one joint piece 10.
It is supported by No. 2 and pressed by the ridge 21 of the other joint piece 20 to connect and seal both pipes 15 and 25 in a watertight manner. In addition, the cap nut member 30 at a position corresponding to the position of the seal packing 40 mounted for inspection or the like.
A hole penetrating from the outer side to the inner side is provided in the, but it is omitted in the drawing.
また、リテーナ６０は、他方の継手ピース２０に被嵌可
能な円環部６１と径方向に伸縮可能な脚部６２とからな
り、袋ナット部材３０に装着された回転手段としてのス
ラストベアリング５０を第１図に示すような安定した姿
勢に保持するためのものである。なお、このリテーナ６
０は、袋ナット部材３０の開放側３１から挿入できるよ
う形成されている。Further, the retainer 60 includes an annular portion 61 that can be fitted to the other joint piece 20 and a leg portion 62 that can expand and contract in the radial direction. The retainer 60 includes a thrust bearing 50 mounted on the cap nut member 30 as a rotating means. This is for maintaining a stable posture as shown in FIG. In addition, this retainer 6
0 is formed so that it can be inserted from the open side 31 of the cap nut member 30.
次に、本発明の管継手の組立方法を第５図を参照しなが
ら説明する。Next, a method for assembling the pipe joint of the present invention will be described with reference to FIG.
第５図（Ａ）において、回転手段たるスラストベアリン
グ５０の受板５０Ｃを袋ナット部材３０の開放側３１か
ら横向きすなわち、切欠部５１，５１を袋ナット部材３
０の径方向に向けて（図で切欠部５１，５１が上下とな
るような向きとして）雌ネジ３３が設けられた空間を通
し（Ｄｍ≦Ｄｓ）拡内径部３５に挿入する（Ｄｅ＞Ｄｏ
＞Ｄｍ）。そして、受板５０Ｃを拡内径部３５内におい
て９０度だけ回転方向転換して、受板５０Ｃの一面側５
２が袋ナット部材３０の内壁面３９に当接させるよう平
行に装着する（第５図（Ｂ）参照）。In FIG. 5 (A), the receiving plate 50C of the thrust bearing 50, which is the rotating means, is oriented laterally from the open side 31 of the cap nut member 30, that is, the notches 51, 51 are formed in the cap nut member 3.
It is inserted through the space in which the internal thread 33 is provided (D m ≦ D s ) in the radial direction of 0 (in such a direction that the cutouts 51, 51 are up and down in the figure) (D m ≦ D s ) (D e > D o
> D m ). Then, the receiving plate 50C is rotated by 90 degrees in the expanded inner diameter portion 35, and the one side 5 of the receiving plate 50C is rotated.
2 is installed in parallel so that the inner wall surface 39 of the cap nut member 30 may be contacted (see FIG. 5 (B)).
続いて、リテーナ（図示省略）で一体的に支持された１
１個の球５０Ｂを開放側から装着する（同（Ｃ）参
照）。引続き、最後に挿入する受板５０Ａを前記の受板
５０Ｃを挿入したときと同様に拡内径部３５に挿入し
（同（Ｄ））に示すように９０度回転させて方向転換し
装着する（同（Ｅ）参照）。そして、スラストベアリン
グ５０（５０Ａ，５０Ｂ，５０Ｃ）を軸線を中心に９０
度回動させておく。また、リテーナ６０を挿入し、スラ
ストベアリング５０の姿勢を安定させる（同（Ｆ）参
照）。その後、他方の管２５をスラストベアリング５
０、貫通口３８を通し、シールパッキン４０を介在させ
て一方の管１５を突合わせてから袋ナット部材３０を回
動させ両管１５，２５を接続する。その結果第１図に示
したように組立てる。なお両管１５，２５でシールパッ
キン４０を締付けるにしたがい袋ナット部材３０の回転
力が他方の管２５等に伝達されるよう働くが本発明では
回転手段たるスラストベアリング５０を介在させている
ので他方の管２５等にねじりを生じさせてしまうような
ことがない。Subsequently, the retainer (not shown) integrally supports 1
One ball 50B is attached from the open side (see the same (C)). Subsequently, the receiving plate 50A to be finally inserted is inserted into the expanding inner diameter portion 35 in the same manner as when the receiving plate 50C is inserted (rotation by 90 degrees as shown in (D)), and the mounting is performed ( (See (E)). Then, the thrust bearing 50 (50A, 50B, 50C) is set at 90 around the axis.
Rotate it once. Further, the retainer 60 is inserted to stabilize the attitude of the thrust bearing 50 (see the same (F)). After that, the other pipe 25 is attached to the thrust bearing 5
No. 0, through the through-hole 38, one pipe 15 is abutted with the seal packing 40 interposed, and then the cap nut member 30 is rotated to connect both pipes 15 and 25. As a result, it is assembled as shown in FIG. When the seal packing 40 is tightened by the two pipes 15 and 25, the rotation force of the cap nut member 30 is transmitted to the other pipe 25 or the like. However, in the present invention, the thrust bearing 50 serving as the rotating means is interposed, the other side. There is no possibility that the pipe 25 or the like is twisted.
したがって、この実施例によれば、袋ナット部材３０の
雌ネジ３３の内径Ｄｓ以下の寸法とされた切欠部５１，
５１（Ｄｍ）が設けられた回動手段たるスラストベアリ
ング５０をその開放側３１から横向きとして挿入し、か
つ雌ネジ３３の内径Ｄｓより大きい内径Ｄｅの拡内径部
３５内で回動方向転換して拡内径部３５内に装着するか
ら、雌ネジ３３の内径Ｄｓより大きい外径Ｄｏをもつ回
動手段を袋ナット部材３０に装着できる。したがって、
管継手を大型とすることなく回転手段の許容スラスト荷
重を飛躍的に増大できるから完璧なシールを達成する管
の接続ができる。管１５，２５にもその回転力は伝達さ
せないから管１５，２５を破損させたりシールパッキン
４０に無理な変形等を生じさせない。Therefore, according to this embodiment, the notch portion 51 having a size equal to or smaller than the inner diameter D s of the female screw 33 of the cap nut member 30,
The thrust bearing 50, which is a rotating means provided with 51 (D m ), is inserted laterally from its open side 31 and is rotated in the expanding inner diameter portion 35 having an inner diameter D e larger than the inner diameter D s of the female screw 33. Since it is converted and mounted in the enlarged inner diameter portion 35, a rotating means having an outer diameter D o larger than the inner diameter D s of the female screw 33 can be mounted on the cap nut member 30. Therefore,
Since the allowable thrust load of the rotating means can be dramatically increased without increasing the size of the pipe joint, the pipes can be connected to achieve a perfect seal. Since the rotational force is not transmitted to the pipes 15 and 25, the pipes 15 and 25 are not damaged or the seal packing 40 is not deformed unduly.
これは、拡内径部３５の内径Ｄｅをさらに大きくしスラ
スト荷重を一層大きくできることを意味するものであ
る。従って、配管やその機器等から管継手の外径が規制
されたとしてもスラスト荷重を任意的に選択できるから
管１５，２５にネジリ変形や破損をさせないので、当該
管継手を採用する設備の生産性を飛躍的に向上できると
ともに長寿命化も達成することができるという効果もあ
る。This is intended to mean that the has an increased thrust load to further increase the inner diameter D e of the expansion bore 35. Therefore, even if the outer diameter of the pipe joint is restricted by the pipe or its equipment, the thrust load can be arbitrarily selected so that the pipes 15 and 25 are not twisted or deformed. It also has the effect of dramatically improving the durability and achieving a longer life.
さらに、袋ナット部材３０の袋底側３７を大径にかつ回
転手段に切欠部５１，５１を設ければよいから、既存の
管継手にも容易かつ経済的に採用できるから、従来のガ
ス、液体等流体の漏洩に苦しんでいた技術的欠陥を解消
できるという効果もある。Furthermore, since the bag bottom side 37 of the bag nut member 30 has a large diameter and the notches 51, 51 are provided in the rotating means, it can be easily and economically adopted for existing pipe joints. There is also an effect that it is possible to eliminate a technical defect that has been suffering from leakage of fluid such as liquid.
さらにまた、許容するスラスト荷重に相応した回転手段
たるスラストベアリング５０の仕様に適合させるべく袋
ナット部材３０等の仕様を都度設計変更するという煩わ
しさが除去されるとともに構造簡単で経済的であるとい
う実用上の利益が大である。Furthermore, the troublesomeness of changing the design of the cap nut member 30 and the like each time to meet the specifications of the thrust bearing 50, which is a rotating means corresponding to the allowable thrust load, is eliminated, and the structure is simple and economical. The practical benefit is great.
もとより、介装する回動手段の対向外周面を切欠すれば
よいからこの点からも構造簡単にして極めて経済的であ
り管継手ないしこれを使用する設備全体の信頼性、組
立、分解容易化等の優れた効果を奏するものである。Of course, since it is sufficient to cut out the opposing outer peripheral surface of the rotating means to be interposed, the structure is simple and extremely economical from this point as well, and reliability, assembly, disassembly, etc. of the pipe joint or the entire equipment using the pipe joint are facilitated. It has an excellent effect of.
なお、以上の実施例によれば、回転手段をスラストベア
リング５０から形成したが、要は袋ナット部材３０の回
転力を両管１５，２５等に伝達させなければよくまたは
軽微とすればよいから必ずしもスラストベアリングでな
くローラベアリングや潤滑部材等から回転手段を構成し
てもよい。According to the above-mentioned embodiments, the rotating means is formed by the thrust bearing 50, but the point is that the rotational force of the cap nut member 30 need not be transmitted to both the pipes 15 and 25 or may be slight. The rotating means may be composed of a roller bearing, a lubricating member, or the like, not necessarily the thrust bearing.
また、そのスラストベアリング５０は、受板５０Ａ、球
５０Ｂ、受板５０Ｃをこの順で挿入、装着するものとし
たが、仮止めした全体（５０Ａ，５０Ｂ，５０Ｃ）を一
度に挿入するようしてもよい。この場合には拡内径部３
５の軸方向長さＬをより小さいものとすることができ
る。もとより、回転手段の横向きとは受板５０Ａ（５０
Ｃ）の外周部分が雌ネジ３３に当接され雌ネジ３３に傷
などをつけずに円滑挿入できればよいから、例えば受板
５０Ａの一面側５２を袋ナット部材３０の軸線と完全に
平行とすることに限定するものではない。Further, in the thrust bearing 50, the receiving plate 50A, the ball 50B, and the receiving plate 50C are inserted and mounted in this order, but the temporarily fixed whole (50A, 50B, 50C) is inserted at once. Good. In this case, the expanded inner diameter part 3
The axial length L of 5 can be smaller. Of course, the horizontal direction of the rotating means means the receiving plate 50A (50
Since the outer peripheral portion of C) is brought into contact with the female screw 33 and can be smoothly inserted without damaging the female screw 33, for example, one surface 52 of the receiving plate 50A is made completely parallel to the axis of the cap nut member 30. It is not limited to this.
さらに、シールパッキン４０は、金属Ｃリング等その形
態材質は不問である。とともに継手ピース１０，２０の
受部、凸条部２１はその形状等も選択自由である。もと
より、シールパッキン４０の過押込量防止手段を採用す
る場合にも本発明は適用される。Furthermore, the seal packing 40 does not matter as to its form material such as a metal C ring. At the same time, the shape and the like of the receiving portions of the joint pieces 10 and 20, the ridge portion 21 can be freely selected. Of course, the present invention is also applied to the case where the excessive packing amount preventing means of the seal packing 40 is adopted.
さらにまた、回転手段の姿勢保持用とリテーナ６０の形
態等も開示範囲に限定されず一方の継手ピース１０の先
端側に弾性部材を設ける等として管を接続してもよい。
つまり、リテーナ６０の有無は本発明の必須要件ではな
い。Furthermore, the shape of the retainer 60 for holding the posture of the rotating means and the form of the retainer 60 are not limited to the disclosed range, and a pipe may be connected by providing an elastic member on the distal end side of one joint piece 10.
That is, the presence or absence of the retainer 60 is not an essential requirement of the present invention.
もとより、この発明の管継手は、管径、管内流体種別等
は限定されず全ての産業分野に適用される。Needless to say, the pipe joint of the present invention is applicable to all industrial fields without limitation in pipe diameter, pipe fluid type and the like.
本発明は、配管にねじり力を伝達させないで完全なシー
ル性を保障できる管継手を提供することができるという
効果を有する。INDUSTRIAL APPLICABILITY The present invention has an effect that it is possible to provide a pipe joint that can ensure a perfect sealing property without transmitting a twisting force to a pipe.
第１図は本発明に係る管継手の一実施例を示す断面全体
構成図、第２図は同じく袋ナット部材の断面図、第３図
は同じく回転手段の全体図、第４図は同じく第３図の矢
視線IV−IVに基づく側面図および第５図は同じく組立の
手順説明図である。 １０……一方の継手ピース、１１……雄ネジ、１５……
一方の管、２０……他方の継手ピース、２５……他方の
管、３０……袋ナット部材、３１……開放側、３３……
雌ネジ、３５……拡内径部、３７……袋底側、４０……
シールパッキン、５０……回転手段であるスラストベア
リング、５１……切欠部。FIG. 1 is an overall sectional view showing an embodiment of a pipe joint according to the present invention, FIG. 2 is a sectional view of a cap nut member, FIG. 3 is an overall view of rotating means, and FIG. A side view based on the arrow IV-IV of FIG. 3 and FIG. 5 are explanatory views of the assembling procedure. 10 ... One joint piece, 11 ... Male screw, 15 ...
One pipe, 20 ... The other joint piece, 25 ... The other pipe, 30 ... Cap nut member, 31 ... Open side, 33 ...
Female screw, 35 ... Expanded inner diameter part, 37 ... Bag bottom side, 40 ...
Seal packing, 50 ... Thrust bearing which is a rotating means, 51 ... Notch.
Claims (1)
方の継手ピースに被嵌された袋ナット部材の雌ネジとを
螺合させるともに他方の継手ピースと袋ナット部材との
間に回転手段を介在させて両管を接続する管継手におい
て、 前記袋ナット部材の袋底側内部に前記雌ネジの内径より
も大径の拡内径部を設け、前記雌ネジの内径よりも大径
の前記回転手段の対向外周面を前記雌ネジの内径以下の
寸法に切欠し、該回転手段をその切欠部分を前記袋ナッ
ト部材の径方向に向けた横向きとして前記袋ナット部材
の開放側から挿入し、前記回転手段を前記拡内径部内で
方向転換させて前記拡内径部に装着させ、雌ネジの内径
よりも大径の回転手段を内装させたことを特徴とする管
継手。1. A male screw provided on one joint piece and a female screw of a cap nut member fitted on the other joint piece are screwed together and rotated between the other joint piece and the cap nut member. In a pipe joint for connecting both pipes with a means interposed, an inside diameter portion having a diameter larger than the inside diameter of the female screw is provided inside the bag bottom side of the bag nut member, and a diameter larger than the inside diameter of the female screw is provided. The opposing outer peripheral surface of the rotating means is cut out to a dimension not larger than the inner diameter of the female screw, and the rotating means is inserted from the open side of the cap nut member with the cutout portion being laterally directed in the radial direction of the cap nut member. A pipe joint, characterized in that the rotating means is turned in the expanded inner diameter portion to be mounted on the expanded inner diameter portion, and the rotating means having a diameter larger than the inner diameter of the female screw is internally provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20214786A JPH0631662B2 (en) | 1986-08-28 | 1986-08-28 | Pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20214786A JPH0631662B2 (en) | 1986-08-28 | 1986-08-28 | Pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6357990A JPS6357990A (en) | 1988-03-12 |
| JPH0631662B2 true JPH0631662B2 (en) | 1994-04-27 |
Family
ID=16452739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20214786A Expired - Lifetime JPH0631662B2 (en) | 1986-08-28 | 1986-08-28 | Pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0631662B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5976404B2 (en) * | 2012-06-07 | 2016-08-23 | リックス株式会社 | Rotary joint |
-
1986
- 1986-08-28 JP JP20214786A patent/JPH0631662B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6357990A (en) | 1988-03-12 |
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