JPS6224091A - Pipe joint - Google Patents
Pipe jointInfo
- Publication number
- JPS6224091A JPS6224091A JP16364285A JP16364285A JPS6224091A JP S6224091 A JPS6224091 A JP S6224091A JP 16364285 A JP16364285 A JP 16364285A JP 16364285 A JP16364285 A JP 16364285A JP S6224091 A JPS6224091 A JP S6224091A
- Authority
- JP
- Japan
- Prior art keywords
- connecting member
- pipe connecting
- pipe
- threaded portion
- locking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Joints With Pressure Members (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、フレキシブルホース、バイブなどの管を連結
する管継手に関する。本発明は、例えば、プラスチック
やアルミニウムから作製する管継手に利用することがで
きる。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pipe joint for connecting pipes such as flexible hoses and vibrators. INDUSTRIAL APPLICATION This invention can be utilized for the pipe joint produced from plastic or aluminum, for example.
［従来の技術］
管継手は、一般に、一方の管に接続される第１管接続部
材と、他方の管に接続される第２管接続部材とから成る
。そして第１管接続部材のおねじ部と第２管接続部材の
めねじ部とを螺合して締め付けることにより、一方の管
と他方の管とを連結する構成である。[Prior Art] A pipe joint generally includes a first pipe connecting member connected to one pipe and a second pipe connecting member connected to the other pipe. The male threaded portion of the first pipe connecting member and the female threaded portion of the second pipe connecting member are screwed together and tightened to connect one pipe to the other pipe.
このように第１管接続部材のおねじ部と第２管接続部材
のめねじ部とを締付【プる構成の管継手では、使用場所
によっては、ねじが緩むおそれがあった。In such a pipe joint configured to tighten the male threaded portion of the first pipe connecting member and the female threaded portion of the second pipe connecting member, there is a risk that the screws may loosen depending on the location of use.
そのためねじの緩みを防止すべく、従来より、第１１！
接続部材と第２管接続部材とをからげ線で止める構成の
管継手、第１管接続部材と第２管接続部材とをビス止め
する構成の管継手、第１管接続部材のおねじ部と第２管
接続部材とのめねじ部との間に接着剤を介在させる構成
の管継手とが提供されている。Therefore, in order to prevent the screws from loosening, the 11th!
A pipe joint configured to fasten a connecting member and a second pipe connecting member with a tangled wire, a pipe joint configured to fasten a first pipe connecting member and a second pipe connecting member with screws, and a male threaded portion of the first pipe connecting member A pipe joint is provided in which an adhesive is interposed between the female threaded portion of the first pipe connecting member and the second pipe connecting member.
しかしながら上記した構成の管継手では、ねじの緩み防
止効果は必ずしも充分ではなかった。However, the pipe joint having the above-mentioned structure does not necessarily have a sufficient effect of preventing screw loosening.
［発明が解決しようとする問題点〕
本発明は上記した問題点を解決するためになされたもの
であり、その目的は、第１管接続部材のおねじ部と第２
管接続部材のめねじ部との緩み防止を効果的に行ない得
る管継手を提供するにある。[Problems to be Solved by the Invention] The present invention has been made to solve the above-mentioned problems, and its purpose is to improve the connection between the male threaded portion of the first pipe connecting member and the second pipe connecting member.
To provide a pipe joint that can effectively prevent loosening of a female threaded part of a pipe connection member.
更には弾性シール部材を設けた実施態様の場合には、お
ねじ部及びめねじ部の締付過剰、締付不足の防止に有利
な管継手を提供することも目的とする。Another object of the present invention is to provide a pipe joint that is advantageous in preventing over-tightening or under-tightening of the male threaded portion and the female threaded portion in the case of an embodiment in which an elastic sealing member is provided.
［問題点を解決するための手段］
本発明に係る管継手は、一端が一方の管に接続され、該
一方の管の孔と連通プる中央貫通孔をもつと共に、他端
側の外周部におねじ部を有する第１管接続部材と、一端
が他方の管に接続され、該他方の管の孔と連通する中央
貫通孔をもっと共に、他端側の内周部に該おねじ部と螺
合するめねじ部を有する第２管接続部材とで構成される
管継手におしζて、
該第１管接続部材は、
同軸的に該第１管接続部材を覆う環状で周方向に回り止
めされかつ軸方向に移動自在な係止部材と、
該係止部材を軸方向にそって該第１管接続部材の該他端
側に付勢し、該おねじ部に該めねじ部が螺合している該
第２管接続部材に該係止部材を押しつけて当接させる付
勢部材とを具漏し、押し付けられて当接した該係止部材
と該第２管接続部材との当接面は、ねじ締め方向に該第
２管接続部材が回動可能でねじもどし方向に該第２管接
続部材が回動不能な一方向係止面となっていることを特
徴とするものである。[Means for Solving the Problems] A pipe joint according to the present invention has one end connected to one pipe, a central through hole communicating with a hole in the one pipe, and an outer peripheral portion on the other end side. a first pipe connecting member having a threaded portion on the inner periphery of the other end; and a second pipe connecting member having a female threaded portion to be screwed together, the first pipe connecting member has an annular shape that coaxially covers the first pipe connecting member and extends in the circumferential direction. a locking member that is prevented from rotating and is movable in the axial direction; the locking member is biased toward the other end of the first pipe connecting member along the axial direction; and a biasing member that presses the locking member into contact with the second pipe connection member to which the locking member and the second pipe connection member are screwed together. The abutting surface is a one-way locking surface that allows the second pipe connecting member to rotate in the screw tightening direction and that does not allow the second pipe connecting member to rotate in the screw unscrewing direction. It is something.
本発明に係る管継手は、外周部におねじ部を有する第１
管接続部材と、内周部にめねじ部を有する第２管接続部
材とで構成される。ここｒめねじ部、おねじ部の呼び、
ピッチなどは従来の管継手と同様とすることができる。The pipe joint according to the present invention has a first pipe joint having a threaded portion on the outer periphery.
It is composed of a pipe connecting member and a second pipe connecting member having a female threaded portion on its inner circumference. Here r the names of the female thread part and male thread part,
The pitch etc. can be similar to conventional pipe joints.
第１管接続部材、第２管接続部材はともに筒形状をなし
ており、故に中央貫通孔を有する。中央貫通孔の径、形
状などは従来の管継手と同様とすることができる。Both the first tube connecting member and the second tube connecting member have a cylindrical shape, and thus have a central through hole. The diameter, shape, etc. of the central through hole can be the same as those of conventional pipe joints.
第１管接続部材には、係止部材と付勢部材とが取り付け
られている。係止部材は、環状をなし、第１管接続部材
を同軸的に覆う部材である。係止部材は、第１管接続部
材に取り付けられた状態で、周方向に回り止めされ、か
つ軸方向に移動自在とされている。このような構成とす
るにあたっては、キーとキー溝とを用いることができる
。例えば、第１管接続部材の外周部に軸方向に伸びるキ
ー溝を形成するとともに、係止部材の内周部にキーを形
成し、キーとキー溝とを嵌合させる構成とすることがで
きる。A locking member and a biasing member are attached to the first pipe connecting member. The locking member is an annular member that coaxially covers the first pipe connection member. The locking member is prevented from rotating in the circumferential direction while being attached to the first pipe connecting member, and is movable in the axial direction. In setting it as such a structure, a key and a keyway can be used. For example, a key groove extending in the axial direction may be formed on the outer periphery of the first pipe connecting member, a key may be formed on the inner periphery of the locking member, and the key and the key groove may be fitted together. .
付勢部材は、弾発力を有し、弾発力によって係止部材を
軸方向にそって第１管接続部材の他端側に付勢するため
の部材である。ここで第１管接続部材の他端側とは、一
方の管が接続される部位である第１管接続部材の一端と
反対側の部位を意味する。代表的な付勢部材としては、
コイルバネ、板バネなどのバネ部材、弾性に富むゴム部
材を用いることができる。The biasing member is a member that has a resilient force and biases the locking member along the axial direction toward the other end side of the first tube connecting member using the resilient force. Here, the other end side of the first tube connecting member means a portion opposite to one end of the first tube connecting member, which is a portion to which one tube is connected. Typical biasing members include:
A spring member such as a coil spring or a plate spring, or a highly elastic rubber member can be used.
さて本発明に係る管継手では、係止部材と第２管接続部
材との当接面は１、ねじ締め方向に該第２管接続部材が
回動可能でねじもどし方向に該第２管接続部材が回動不
能な一方向係止面となっている。Now, in the pipe joint according to the present invention, the contact surface between the locking member and the second pipe connecting member is 1, the second pipe connecting member is rotatable in the screw tightening direction, and the second pipe connecting member is rotatable in the screw unscrewing direction. The member is a one-way locking surface that cannot be rotated.
代表的な一方向係止面としては、傾斜面と垂直面とで形
成される爪部によって形成することができる。この場合
には係止部材と＠２管接続部材とのそれぞれに、互いに
対応する爪部を形成する。A typical one-way locking surface can be formed by a claw portion formed by an inclined surface and a vertical surface. In this case, claw portions corresponding to each other are formed on each of the locking member and the @2 pipe connecting member.
このように爪部を形成した場合には、爪部の傾斜面同士
が当接すると、いわゆる「検の原理」によって係止部材
が付勢部材の付勢力に抗しつつ軸方向に移動するため、
第２管接続部材はねじ締め方向へ回動可能となる。又爪
部の垂直面同士が当接すると、互いに係止するので、第
２管接続部材は回動不能となり、したがって第２管接続
部材はねじ戻し方向へ回動不能となる。なお第１管接続
部材と第２管接続部材との間には、該おねじ部と該めね
じ部とを締付けたときに該第１管接続部材と該第２管接
続部材との空間をなくしてシールする弾性シール部材を
設けることが好ましい。この弾性シール部材は、第１管
接続部材に取り付けることができる。When the claws are formed in this way, when the inclined surfaces of the claws come into contact with each other, the locking member moves in the axial direction while resisting the biasing force of the biasing member due to the so-called "principle of detection". ,
The second pipe connecting member is rotatable in the screw tightening direction. Further, when the vertical surfaces of the claws come into contact with each other, they are locked with each other, so that the second pipe connecting member cannot be rotated, and therefore, the second pipe connecting member cannot be rotated in the unscrewing direction. Note that there is a space between the first pipe connecting member and the second pipe connecting member when the male threaded portion and the female threaded portion are tightened. It is preferable to provide an elastic sealing member that provides a seal without being removed. This elastic sealing member can be attached to the first tube connecting member.
［作用１
本発明に係る管継手の使用方法を説明する。まず、第１
管接続部材や第２管接続部材を手指やスパナなどで保持
し、第１管接続部材のおねじ部と第２管接続部材のめね
じ部とを螺合する。このように螺合を進めると、係止部
材は、第２管接続部材に当接する。このとき、係止部材
は付勢部材の弾発力によって第２管接続部材に押し付け
られる。[Operation 1] A method of using the pipe joint according to the present invention will be explained. First, the first
Holding the tube connecting member and the second tube connecting member with fingers or a spanner, the male threaded portion of the first tube connecting member and the female threaded portion of the second tube connecting member are screwed together. As the screwing progresses in this manner, the locking member comes into contact with the second pipe connecting member. At this time, the locking member is pressed against the second pipe connecting member by the elastic force of the urging member.
ここで係止部材と第２管接続部材との当接面は、前述し
たように一方向係止面となっているため、ねじ締め方向
へ第２管接続部材を回動することはできるが、ねじ戻し
方向へ第２管接続部材を回動することができない。Here, the contact surface between the locking member and the second pipe connecting member is a one-way locking surface as described above, so the second pipe connecting member can be rotated in the screw tightening direction. , the second pipe connecting member cannot be rotated in the unscrewing direction.
又、前記弾性シール部材を設けた場合には、おねじ部と
めねじ部とを螺合して締付けたときに第１管接続部材と
第２管接続部材との間の空間がなくなる。つまり弾性シ
ール部材を介して第１管接続部材と第２管接続部材とが
衝突する。このように衝突すると、螺合の際の抵抗が急
激に大きくなるため、作業者は締付がほぼ終了したこと
を知ることができる。このように締付がほぼ終了したら
、所定量だけ更に螺合させると、そのぶん弾性シール部
材が弾性変形し、第１管接続部材と第２管接続部材との
間のシール性を確保できる。Further, when the elastic seal member is provided, there is no space between the first pipe connecting member and the second pipe connecting member when the male threaded portion and the female threaded portion are screwed together and tightened. In other words, the first pipe connecting member and the second pipe connecting member collide through the elastic sealing member. When such a collision occurs, the resistance during screwing increases rapidly, allowing the operator to know that the tightening is almost complete. When the tightening is almost completed in this manner, the elastic sealing member is elastically deformed by further screwing by a predetermined amount, and sealing performance between the first pipe connecting member and the second pipe connecting member can be ensured.
［発明の効果］
本発明に係る管継手では、前述したように、係止部材と
第２管接続部材との当接面は、ねじ締め方向に該第２の
管接続部材が回動可能でねじもどし方向に該第２管接続
部材が回動不能な一方向係止面となっている構成である
。故に１１７１や衝撃などが加わる場所で管継手を使用
したとしても従来に比べてねじが緩むことを抑制するこ
とができる。[Effects of the Invention] As described above, in the pipe joint according to the present invention, the contact surface between the locking member and the second pipe connecting member is such that the second pipe connecting member can rotate in the screw tightening direction. The second pipe connecting member is configured as a one-way locking surface that cannot be rotated in the direction of unscrewing. Therefore, even if the pipe joint is used in a place where 1171 or impact is applied, loosening of screws can be suppressed compared to the conventional method.
又、弾性シール部材を設けた場合には、前述したように
、おねじ部とめねじ部との締付がほぼ完了したことを作
業者は知ることができ、よって所定量だけ更に螺合させ
ればよい。このようにすれば締付過剰、締付不足を防止
するに有利である。In addition, when an elastic seal member is provided, as mentioned above, the operator can know that the tightening of the male thread part and the female thread part is almost completed, and therefore the operator can further screw them together by a predetermined amount. Bye. This is advantageous in preventing over-tightening or under-tightening.
［実施例］ 本発明の１実施例を第１図〜第１０図に示す。[Example] One embodiment of the present invention is shown in FIGS. 1-10.
（実施例の構成）
本実施例に係る管継手は、第１管接続部材１と第２管接
続部材２とで構成されている。第１管接続部材１は、流
体通過用の中央貫通孔１２及びナツト部１４をもつニッ
プル状をなしている。この第１管接続部材１の一端１ａ
の外周部にはテーバねじ１０が形成されている。テーパ
ねじ１０には、図示はしないが、一方の管が螺合されて
接続される。第２図に示すように、第１管接続部材１の
他＠ｌｂ側の外周部には、管用平行ねじであるおねじ部
１３が形成されている。更に第１管接続部材１の他端１
ｂ側の外周部には、第２図や第３図に示すように、キー
溝１５が軸方向と平行に２個形成されている。(Structure of Example) The pipe joint according to this example is composed of a first pipe connecting member 1 and a second pipe connecting member 2. The first pipe connecting member 1 has a nipple shape with a central through hole 12 and a nut portion 14 for fluid passage. One end 1a of this first pipe connecting member 1
A taper thread 10 is formed on the outer periphery of. Although not shown, one pipe is screwed and connected to the tapered screw 10. As shown in FIG. 2, a male threaded portion 13, which is a parallel pipe thread, is formed on the outer peripheral portion of the first pipe connecting member 1 on the @lb side. Furthermore, the other end 1 of the first pipe connecting member 1
As shown in FIGS. 2 and 3, two key grooves 15 are formed in the outer peripheral portion on the b side in parallel with the axial direction.
この第１管接続部材１には、係止部材３と付勢部材とし
てのコイルバネ４とが取り付【プられている。係止部材
３は、第４図及び第５図に示すように環状をなしている
。この係止部材３の側面３３には爪部３０が周方向に直
列に８個均等間隔でつまり４５度間隔で形成されている
。この爪部３０は、係止部材３の軸方向とほぼ平行な垂
直面３１と、垂直面３１の先端より軸方向寸法が順次減
少する傾斜面３２とで形成されている。更に、係止部材
３の内周部にはキー３４が互いに対向するように２個形
成されている。そして、キー３４と前記キー溝１５とを
互いに１■合することにより、係止部材３は第１管接続
部材１に対して回り止め状態に装着されている。ここで
、キー３４をキー溝１５にそって移動させれば、係止部
材３は回り止め状態のまま、第１管接続部月１の軸方向
にそって移動し得る。なお係止部材３は第１管接続部材
１から外れぬようにされているが、このようにするにあ
たっては係止部材３に固定されたビンによって行なって
いる。A locking member 3 and a coil spring 4 as a biasing member are attached to the first pipe connecting member 1. The locking member 3 has an annular shape as shown in FIGS. 4 and 5. On the side surface 33 of the locking member 3, eight claws 30 are formed in series in the circumferential direction at equal intervals, that is, at intervals of 45 degrees. The claw portion 30 is formed of a vertical surface 31 that is substantially parallel to the axial direction of the locking member 3, and an inclined surface 32 whose axial dimension gradually decreases from the tip of the vertical surface 31. Furthermore, two keys 34 are formed on the inner peripheral portion of the locking member 3 so as to face each other. By aligning the key 34 and the keyway 15 with each other, the locking member 3 is attached to the first pipe connecting member 1 in a non-rotating state. Here, if the key 34 is moved along the keyway 15, the locking member 3 can be moved along the axial direction of the first tube connection portion 1 while remaining in the non-rotating state. The locking member 3 is prevented from coming off the first pipe connecting member 1, and this is done by means of a pin fixed to the locking member 3.
付勢部材としてのコイルバネ４は、第１管接続部材１の
ナツト部１４と係止部材３との間に介在されている。コ
イルバネ１０は、その弾発力によって係止部材３を軸方
向にそって第１管接続部材１の他端１ｂ側に付勢してい
る。なお第６図は、コイルバネ４によって係止部材３が
他端１ｂ側へ付勢されている状態を示す。−力筒７図は
コイルバネ４に抗して係止部材３をナツト部１４側へ移
動させた状態を示す。A coil spring 4 as a biasing member is interposed between the nut portion 14 of the first tube connecting member 1 and the locking member 3. The coil spring 10 urges the locking member 3 along the axial direction toward the other end 1b of the first tube connecting member 1 by its elastic force. Note that FIG. 6 shows a state in which the locking member 3 is biased toward the other end 1b by the coil spring 4. - Figure 7 shows a state in which the locking member 3 is moved toward the nut portion 14 against the coil spring 4.
第１図、第８図に示すように、第２管接続部材２は、中
央貫通孔２０ａをもつユニオンナット部２０と、ユニオ
ンナット部２０に挿入され中央貫通孔２１ａをもつ筒体
２１とからなる。第１図に示すように筒体２１の凸部２
１０がユニオンナット部２０の凸部２００に当ることに
よって、筒体２１は、ユニオンナット部２０に対して扱
は止め状態とされている。筒体２１の一端の溝２１ｂに
は、他方の管５のソケット５０ががしめっけられ、この
結果第２管接続部材２に他方の管５が接続されている。As shown in FIGS. 1 and 8, the second pipe connecting member 2 includes a union nut portion 20 having a central through hole 20a, and a cylindrical body 21 inserted into the union nut portion 20 and having a central through hole 21a. Become. As shown in FIG.
10 hits the convex portion 200 of the union nut portion 20, the cylindrical body 21 is prevented from handling with respect to the union nut portion 20. A socket 50 of the other tube 5 is fitted into the groove 21b at one end of the cylindrical body 21, and as a result, the other tube 5 is connected to the second tube connecting member 2.
第２管接続部材２のユニオンナット部２０の内周部には
、めねじ部２３が形成されている。このめねじ部２３は
、第１管接続部材１のおねじ部１３と螺合する。又ユニ
オンナット部２０には、第９図、第１０図に示すように
爪部２２が周方向に均等間隔でつまり角度４５度の間隔
で８個形成されている。この爪部２２は、係止部材３の
爪部３０と対応するものであり、軸方向と平行な垂直面
２２０と傾斜面２２１とで形成されている。A female threaded portion 23 is formed on the inner peripheral portion of the union nut portion 20 of the second pipe connecting member 2 . This female threaded portion 23 is screwed into the male threaded portion 13 of the first pipe connecting member 1 . Further, as shown in FIGS. 9 and 10, the union nut portion 20 has eight claw portions 22 formed at equal intervals in the circumferential direction, that is, at intervals of 45 degrees. This claw portion 22 corresponds to the claw portion 30 of the locking member 3, and is formed of a vertical surface 220 parallel to the axial direction and an inclined surface 221.
本実施例では、一方向係止面は、係止部材３の爪部３０
の垂直面３１、傾斜面３２、ユニオンナット部２０の爪
部２２の垂直面２２０、傾斜面２２１とで形成されてい
る。In this embodiment, the one-way locking surface is the claw portion 30 of the locking member 3.
It is formed by a vertical surface 31, an inclined surface 32, a vertical surface 220 of the claw portion 22 of the union nut portion 20, and an inclined surface 221.
第１図において、６は弾性シール部材であり、第１管接
続部材１の他端１ｂ側の四部１６に取り付けられている
。この結果、弾性シール部材６は、筒体の端面２１ｃと
当接しうるようになっている。In FIG. 1, reference numeral 6 denotes an elastic sealing member, which is attached to the four parts 16 on the other end 1b side of the first tube connecting member 1. As a result, the elastic seal member 6 can come into contact with the end surface 21c of the cylindrical body.
この弾性シール部材６はＯリング状をなし、加硫ゴムか
ら作製されている。This elastic seal member 6 has an O-ring shape and is made of vulcanized rubber.
（実施例の作用） 本実施例に係る管継手の代表的な使用方法を説明する。(Effect of Example) A typical usage method of the pipe joint according to this embodiment will be explained.
まず手指、スパナなどによって第１管接続部材１のおね
じ部１３と第２管接続部材２のめねじ部２３とを、ねじ
締め方向に回して螺合させる。すると、係止部材３の爪
部３ｏの傾斜面３２と第２管接続部材２の爪部２２の傾
斜面２２１とが当る。このように傾斜面３２と傾斜面２
２１とが当った後、更にねじ締め方向への螺合を続ける
と、いわゆる「横の原理」によって係止部材３が傾斜面
２２１に押圧され、コイルバネ４の弾発力に抗しつつ、
第７図に示す矢印へ方向に移動する。First, the male threaded portion 13 of the first tube connecting member 1 and the female threaded portion 23 of the second tube connecting member 2 are screwed together by turning them in the tightening direction using fingers, a spanner, or the like. Then, the inclined surface 32 of the claw portion 3o of the locking member 3 comes into contact with the inclined surface 221 of the claw portion 22 of the second pipe connecting member 2. In this way, the inclined surface 32 and the inclined surface 2
21 and then continue screwing in the tightening direction, the locking member 3 is pressed against the inclined surface 221 by the so-called "lateral principle", and while resisting the elastic force of the coil spring 4,
Move in the direction of the arrow shown in FIG.
このため、第２管接続部材２と第１管接続部材１との螺
合は進む。このようにして螺合が進むと、筒体２１の端
面２１ｃと弾性シール部材６とが当接する。そして、筒
体２１の端面２１Ｃと弾性シール部材６とが当接すると
、ねじ締め方向へ回す際の抵抗が急激に大きくなる。こ
のように抵抗が急激に大きくなってから、爪部３ｏの所
定ピッチぶん例えば４ピツチ〜６ビツチぶん進むように
、ユニオンナット部２ｏをねじ締め方向に回し、以て第
１管接続部材１と第２管接続部材２との連結を完了する
。Therefore, the screwing between the second pipe connecting member 2 and the first pipe connecting member 1 progresses. As the screwing progresses in this manner, the end surface 21c of the cylindrical body 21 and the elastic seal member 6 come into contact with each other. When the end surface 21C of the cylinder body 21 and the elastic seal member 6 come into contact with each other, the resistance when turning in the screw tightening direction increases rapidly. After the resistance suddenly increases in this way, turn the union nut part 2o in the screw tightening direction so that the claw part 3o advances by a predetermined pitch, for example, 4 to 6 pitches, and then connect the first pipe connecting member 1. The connection with the second pipe connecting member 2 is completed.
このように完了した状態では、弾性シール部材６は筒体
２１の端面２１ｃに押圧されて適度に弾性変形している
ため、第２管接続部材２のユニオンナット部２０と第１
管接続部材１との間のシール性を良好に確保することが
できる。In this completed state, the elastic seal member 6 is pressed against the end surface 21c of the cylinder body 21 and is appropriately elastically deformed, so that the union nut portion 20 of the second pipe connection member 2 and the first
Good sealing performance with the pipe connecting member 1 can be ensured.
ところで振動や衝撃などが生じるためねじの緩みが生じ
易い場所で、上記実施例に係る管継手を使用した場合で
あっても、コイルバネ４の弾発力によって付勢された係
止部材３が第２管接続部材２のユニオンナラ１〜部２０
の爪部２２に係止するため、ねじの緩みは生じない。即
ちねじが緩む方向へ第１管接続部材１や第２管接続部材
２が回ろうとすると、係止部材３の爪部３０の垂直面３
１と第２管接続部材２のユニオンナット部２０の爪部２
２の垂直面２２０とが互いに係止するため、第２管接続
部材２はねじ緩み分向へ回ることができない。Incidentally, even if the pipe joint according to the above embodiment is used in a place where screws are likely to loosen due to vibrations or shocks, the locking member 3 biased by the elastic force of the coil spring 4 may Union nuts 1 to 20 of 2-pipe connecting member 2
Since it is locked to the claw portion 22 of the screw, the screw does not loosen. That is, when the first pipe connecting member 1 or the second pipe connecting member 2 tries to turn in the direction in which the screws loosen, the vertical surface 3 of the claw portion 30 of the locking member 3
1 and the claw portion 2 of the union nut portion 20 of the second pipe connecting member 2
Since the vertical surfaces 220 of the second pipe connecting member 2 and the second pipe connecting member 2 are locked with each other, the second pipe connecting member 2 cannot be rotated in the direction of loosening the screw.
一方第１管接続部材１と第２管接続部材２とを取り外す
にあたっては、係止部材３をコイルバネ４に抗しつつナ
ツト部１４側へ、つまり第７図に示す矢印へ方向へ移動
させ、これにより係止部材３の爪部３０と第２管接続部
材２のユニオンナット部２ｏの爪部２２との係止を解除
する。ぞしてその状態で、第１管接続部材１．第２管接
続部材２の少なくとも一方をねじ戻し方向へ回し、第１
管接続部材１のおねじ部１３と第２管接続部材２のめね
じ部２３との螺合を解除し、以て第１管接続部材１と第
２管接続部材２とを分離する。On the other hand, when removing the first pipe connecting member 1 and the second pipe connecting member 2, the locking member 3 is moved toward the nut portion 14 while resisting the coil spring 4, that is, in the direction of the arrow shown in FIG. This releases the lock between the claw portion 30 of the locking member 3 and the claw portion 22 of the union nut portion 2o of the second pipe connecting member 2. Then, in that state, the first pipe connecting member 1. Turn at least one of the second pipe connecting members 2 in the unscrewing direction, and
The threaded engagement between the male threaded portion 13 of the tube connecting member 1 and the female threaded portion 23 of the second tube connecting member 2 is released, thereby separating the first tube connecting member 1 and the second tube connecting member 2.
（実施例の効果）
以上説明したように本実施例では、第１管接続部材１の
おねじ部１３と第２管接続部材２のめねじ部２３とのね
じ緩みを効果的に抑制することができる。(Effects of Example) As described above, in this example, loosening of the male threaded portion 13 of the first pipe connecting member 1 and the female threaded portion 23 of the second pipe connecting member 2 can be effectively suppressed. I can do it.
又本実施例では、ねじ締め方向への螺合抵抗が急激に大
きくなってから、爪部３ｏの所定ピッチぶんだけ進むよ
うに、ねじ締め方向へ回せば、おねじ部１３とめねじ部
２３との締付強度は常にほぼ一定の値となる。、よって
締付不足、締付過剰の双方を効果的に防止することがで
きる。よって締付不足による流体の漏れ、締付過剰によ
る管継手の破損などを効果的に防止することができる。Further, in this embodiment, after the screwing resistance in the screw tightening direction increases rapidly, if the claw portion 3o is turned in the screw tightening direction so as to advance by a predetermined pitch, the male thread portion 13 and the female thread portion 23 can be separated. The tightening strength of is always a nearly constant value. Therefore, both under-tightening and over-tightening can be effectively prevented. Therefore, it is possible to effectively prevent fluid leakage due to insufficient tightening and damage to the pipe joint due to excessive tightening.
よって締付が過剰になされると、破損し易いプラスチッ
クやアルミニウム製の管継手に適する。Therefore, it is suitable for pipe fittings made of plastic or aluminum, which are easily damaged if over-tightened.
又本実施例では前記した所定ピッチ数を適宜選択すれば
、締付強度を段階的に微調整することができる。Further, in this embodiment, by appropriately selecting the predetermined pitch number described above, the tightening strength can be finely adjusted in stages.
（試験例）
上記した実施例に係る管継手において、爪部３０が締付
トルクの上昇に影響する度合を試験した。(Test Example) In the pipe joint according to the above-described example, the degree to which the claw portion 30 influences the increase in tightening torque was tested.
この試験では第１管接続部材１、第２管接続部材２を、
樹脂としてのガラス繊維入り樹脂から形成した。おねじ
部１３、めねじ部２３のねじの大キ２ｋ ハ、ＰＦＩ／
２ （Ｊ ｌ５ＢＯ２０２）とした。In this test, the first pipe connecting member 1 and the second pipe connecting member 2 were
It was formed from a resin containing glass fiber as a resin. Large thread size 2k for male thread part 13 and female thread part 23, PFI/
2 (J 15BO202).
この場合ユニオンナット部２０が破損する際のユニオン
ナット破壊トルクは、５００ｋｑ−ｃｍであり、ねじ締
め方向へ回して急激に抵抗を感じてからユニオンナット
部２ｏを所定節回して爪部３０を所定ピッチぶん進ませ
て行なった。試験結果を第１１図に示す。第１１図にお
いて、横軸は爪部３０のピッチ数を示し、縦軸は得られ
た締付１〜ルクを示す。第１１図に示すように、急激に
抵抗を感じてから爪部３ｏを４〜６ピツチぶん（ユニオ
ンナット部２０の回転数で０．５〜０．７５回転）で進
めると、締付トルクが１００〜１５０ｋＣｌ−ｃｍとな
り適切な締付トルク値（耐圧２８０Ｋｇ／Ｃｌ１１２が
得られる締付トルク）が得られた。In this case, the union nut breaking torque when the union nut part 20 is damaged is 500 kq-cm, and after turning the screw in the tightening direction and suddenly feeling resistance, turn the union nut part 2o by a predetermined turn and tighten the claw part 30 by a predetermined pitch. I went ahead and did it. The test results are shown in FIG. In FIG. 11, the horizontal axis indicates the pitch number of the claw portion 30, and the vertical axis indicates the obtained tightening torque of 1 to 1. As shown in Fig. 11, if you suddenly feel resistance and then advance the pawl 3o by 4 to 6 pitches (0.5 to 0.75 rotations of the union nut 20), the tightening torque will increase. The tightening torque was 100 to 150 kCl-cm, and an appropriate tightening torque value (tightening torque for obtaining a pressure resistance of 280 kg/Cl112) was obtained.
この結果から急激に抵抗が大きくなってがらの爪部３０
の１ピツチふんば、２５ｋｇ−ｃｍの上昇と、なること
がわかった。From this result, the claw portion 30 while the resistance suddenly increases.
It was found that one pitch of weight increases by 25 kg-cm.
第１図〜第１０図は本発明の１実施例を示し、第１図は
一部切断して示す本実施例の管継手の側面図であり、第
２図は第１管接続部材の要部の平面図であり、第３図は
第２図の第１管接続部材を切断して示す断面図であり、
第４図は上半分を切断して示す係止部材の側面図であり
、第５図は係止部材の正面図であり、第６図は係止部材
と付勢部材とを取り付けた状態の第１管接続部材の側面
図であり、第７図は係止部材を付勢部材に抗しつつ移動
させた状態の側面図であり、第８図は第２管接続部材の
側面図であり、第９図は第２管接続部材のユニオンナッ
ト部の正面図であり、第１０図はＦ半分を切断して示す
ユニオンナット部の側面図である。第１１図は締付トル
クと爪部のピッチ数との関係を示すグラフである。
図中、１は第１管接続部材、１ａは一端、１ｂは他端、
１０はテーパねじ、１２は中央貫通孔、１３はおねじ部
、１５はキー溝、２は第２管接続部材、２ｏはユニオン
ナット部、２０ａは中央貫通孔、２１は筒体、２１ａは
中央貫通孔、２３はめねじ部、２２は爪部、２２０は垂
直面、２２１は傾斜面、３は係止部材、３０は爪部、３
１は垂直面、３２は傾斜面、３４はキー、４はコイルバ
ネ（付勢部材）、５は他方の管、５ｏはソケット、６は
弾性シール部材をそれぞれ示す。1 to 10 show one embodiment of the present invention, FIG. 1 is a partially cutaway side view of the pipe joint of this embodiment, and FIG. 2 is a main part of the first pipe connecting member. FIG. 3 is a cross-sectional view showing the first pipe connection member in FIG. 2;
FIG. 4 is a side view of the locking member with the upper half cut away, FIG. 5 is a front view of the locking member, and FIG. 6 is a state in which the locking member and biasing member are attached. FIG. 7 is a side view of the first pipe connecting member, FIG. 7 is a side view of the locking member moved while resisting the urging member, and FIG. 8 is a side view of the second pipe connecting member. , FIG. 9 is a front view of the union nut portion of the second pipe connecting member, and FIG. 10 is a side view of the union nut portion cut in half F. FIG. 11 is a graph showing the relationship between tightening torque and the number of pitches of the claw portion. In the figure, 1 is a first pipe connecting member, 1a is one end, 1b is the other end,
10 is a tapered screw, 12 is a central through hole, 13 is a male thread, 15 is a keyway, 2 is a second pipe connecting member, 2o is a union nut, 20a is a central through hole, 21 is a cylinder, 21a is a central through hole hole, 23 is a female threaded portion, 22 is a claw portion, 220 is a vertical surface, 221 is an inclined surface, 3 is a locking member, 30 is a claw portion, 3
1 is a vertical surface, 32 is an inclined surface, 34 is a key, 4 is a coil spring (biasing member), 5 is the other tube, 5o is a socket, and 6 is an elastic sealing member.
Claims (5)
通する中央貫通孔をもつと共に、他端側の外周部におね
じ部を有する第１管接続部材と、一端が他方の管に接続
され、該他方の管の孔と連通する中央貫通孔をもつと共
に、他端側の内周部に該おねじ部と螺合するめねじ部を
有する第２管接続部材とで構成される管継手において、
該第１管接続部材は、 同軸的に該第１管接続部材を覆う環状で周方向に回り止
めされかつ軸方向に移動自在な係止部材と、 該係止部材を軸方向にそって該第１管接続部材の該他端
側に付勢し、該おねじ部に該めねじ部が螺合している該
第２管接続部材に該係止部材を押しつけて当接させる付
勢部材とを具備し、 押し付けられて当接した該係止部材と該第２管接続部材
との当接面は、ねじ締め方向に該第２管接続部材が回動
可能でねじもどし方向に該第２管接続部材が回動不能な
一方向係止面となっていることを特徴とする管継手。(1) A first pipe connecting member having one end connected to one pipe, having a central through hole communicating with the hole of the one pipe, and having a threaded portion on the outer periphery of the other end; a second pipe connecting member that is connected to the other pipe and has a central through hole that communicates with the hole of the other pipe, and has a female threaded part on the inner circumference of the other end that screws with the male threaded part. In pipe fittings that are
The first pipe connecting member includes a locking member that is annular and coaxially covers the first pipe connecting member and is prevented from rotating in the circumferential direction and is movable in the axial direction; A biasing member that biases the other end of the first pipe connecting member and presses the locking member into contact with the second pipe connecting member whose female threaded portion is screwed into the male threaded portion. The contact surface between the locking member and the second pipe connecting member that are pressed into contact with each other is such that the second pipe connecting member is rotatable in the screw tightening direction and the contact surface of the second pipe connecting member is rotatable in the screw tightening direction. A pipe joint characterized in that a two-pipe connecting member has a one-way locking surface that cannot be rotated.
の、軸方向とほぼ平行な垂直面と該垂直面の先端より軸
方向の寸法が順次減少する傾斜面とで形成される爪部を
有し、 第２管接続部材は、該係止部材の該爪部と対応する爪部
を有し、一方向係止面は双方の該爪部で構成されており
、 おねじ部とめねじ部とをねじ締め方向に回すときに、双
方の該爪部の該傾斜面同士を対向させ、ねじもどし方向
に回すときに、双方の該爪部の該垂直面同士を当接させ
て係止するようにした特許請求の範囲第１項記載の管継
手。(2) The locking member is a claw formed of at least two vertical surfaces substantially parallel to the axial direction, which are arranged in series in the circumferential direction, and an inclined surface whose axial dimension gradually decreases from the tip of the vertical surface. The second pipe connecting member has a claw portion corresponding to the claw portion of the locking member, the one-way locking surface is composed of both of the claw portions, and the second pipe connecting member has a male threaded portion. When turning the threaded portion in the tightening direction, the inclined surfaces of both pawls face each other, and when turning the screw in the unscrewing direction, the vertical surfaces of both pawls come into contact with each other. The pipe joint according to claim 1, wherein the pipe joint is configured to stop.
おねじ部と該めねじ部とを締付けたときに該第１管接続
部材と該第２管接続部材との空間をなくしてシールする
弾性シール部材を具備する特許請求の範囲第１項記載の
管継手。(3) There is a gap between the first pipe connecting member and the second pipe connecting member when the male threaded portion and the female threaded portion are tightened. The pipe joint according to claim 1, further comprising an elastic sealing member that seals by eliminating space.
材は内周部にキーを有し、該キーと該キー溝との嵌合に
より該係止部材を該第１管接続部材に対して回り止めす
る構成である特許請求の範囲第１項記載の管継手。(4) The first pipe connecting member has a keyway on the outer circumference, the locking member has a key on the inner circumference, and the locking member is connected to the first tube by fitting the key and the keyway. The pipe joint according to claim 1, which is configured to prevent rotation with respect to the pipe connection member.
部材はユニオンナット状である特許請求の範囲第１項記
載の管継手。(5) The pipe joint according to claim 1, wherein the first pipe connecting member is in the shape of a nipple, and the second pipe connecting member is in the shape of a union nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16364285A JPS6224091A (en) | 1985-07-24 | 1985-07-24 | Pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16364285A JPS6224091A (en) | 1985-07-24 | 1985-07-24 | Pipe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6224091A true JPS6224091A (en) | 1987-02-02 |
| JPH0160714B2 JPH0160714B2 (en) | 1989-12-25 |
Family
ID=15777822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16364285A Granted JPS6224091A (en) | 1985-07-24 | 1985-07-24 | Pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6224091A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004183761A (en) * | 2002-12-03 | 2004-07-02 | Ck Kinzoku Kk | Hot water/cold water supplying pipe header and joint |
| JP2008533403A (en) * | 2005-03-17 | 2008-08-21 | ダルヴァス エス．アール．エス | Improved pipe fitting |
| WO2009078461A1 (en) * | 2007-12-19 | 2009-06-25 | Sekisui Chemical Co., Ltd. | Connection structure of tubular connection member and joint member |
| JP2010127459A (en) * | 2008-12-01 | 2010-06-10 | Nippon Pillar Packing Co Ltd | Resin pipe joint |
| WO2010064519A1 (en) * | 2008-12-01 | 2010-06-10 | 日本ピラー工業株式会社 | Resin pipe joint |
| JP2010133448A (en) * | 2008-12-02 | 2010-06-17 | Nippon Pillar Packing Co Ltd | Resin pipe joint |
| WO2012144072A1 (en) * | 2011-04-22 | 2012-10-26 | ヤマホ工業株式会社 | Member connector and spray nozzle unit using same |
| JP2015068447A (en) * | 2013-09-30 | 2015-04-13 | 日立金属株式会社 | Pipe joint |
| JP2019178725A (en) * | 2018-03-30 | 2019-10-17 | 株式会社フジキン | Pipe joint |
| WO2020129212A1 (en) * | 2018-12-20 | 2020-06-25 | 三菱電機株式会社 | Pipe joint structure, and air conditioner |
| JP2021080979A (en) * | 2019-11-18 | 2021-05-27 | 日本ピラー工業株式会社 | Flow passage joint structure |
-
1985
- 1985-07-24 JP JP16364285A patent/JPS6224091A/en active Granted
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004183761A (en) * | 2002-12-03 | 2004-07-02 | Ck Kinzoku Kk | Hot water/cold water supplying pipe header and joint |
| JP2008533403A (en) * | 2005-03-17 | 2008-08-21 | ダルヴァス エス．アール．エス | Improved pipe fitting |
| WO2009078461A1 (en) * | 2007-12-19 | 2009-06-25 | Sekisui Chemical Co., Ltd. | Connection structure of tubular connection member and joint member |
| JP2009150450A (en) * | 2007-12-19 | 2009-07-09 | Sekisui Chem Co Ltd | Connecting structure between pipe-like connecting member and joint member |
| JP4589955B2 (en) * | 2007-12-19 | 2010-12-01 | 積水化学工業株式会社 | Connection structure between tubular connecting member and joint member |
| US8240715B2 (en) | 2007-12-19 | 2012-08-14 | Sekisui Chemical Co., Ltd. | Connection structure of tubular connection member and joint member |
| KR101322576B1 (en) * | 2008-12-01 | 2013-10-28 | 니폰 필라고교 가부시키가이샤 | Resin pipe joint |
| JP2010127459A (en) * | 2008-12-01 | 2010-06-10 | Nippon Pillar Packing Co Ltd | Resin pipe joint |
| WO2010064519A1 (en) * | 2008-12-01 | 2010-06-10 | 日本ピラー工業株式会社 | Resin pipe joint |
| US9151427B2 (en) | 2008-12-01 | 2015-10-06 | Nippon Pillar Packing Co., Ltd. | Resin pipe joint |
| JP2010133448A (en) * | 2008-12-02 | 2010-06-17 | Nippon Pillar Packing Co Ltd | Resin pipe joint |
| CN102844603A (en) * | 2011-04-22 | 2012-12-26 | 山保工业株式会社 | Member connector and spray nozzle unit using same |
| US9073078B2 (en) | 2011-04-22 | 2015-07-07 | Yamaho Industry Co., Ltd. | Member joint and spray nozzle unit using the same |
| WO2012144072A1 (en) * | 2011-04-22 | 2012-10-26 | ヤマホ工業株式会社 | Member connector and spray nozzle unit using same |
| JP2015068447A (en) * | 2013-09-30 | 2015-04-13 | 日立金属株式会社 | Pipe joint |
| JP2019178725A (en) * | 2018-03-30 | 2019-10-17 | 株式会社フジキン | Pipe joint |
| WO2020129212A1 (en) * | 2018-12-20 | 2020-06-25 | 三菱電機株式会社 | Pipe joint structure, and air conditioner |
| JPWO2020129212A1 (en) * | 2018-12-20 | 2021-05-20 | 三菱電機株式会社 | Piping joint structure and air conditioner |
| US11906081B2 (en) | 2018-12-20 | 2024-02-20 | Mitsubishi Electric Corporation | Pipe joint structure and air conditioner |
| JP2021080979A (en) * | 2019-11-18 | 2021-05-27 | 日本ピラー工業株式会社 | Flow passage joint structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0160714B2 (en) | 1989-12-25 |
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