JPH0313474B2 - - Google Patents
Info
- Publication number
- JPH0313474B2 JPH0313474B2 JP24197386A JP24197386A JPH0313474B2 JP H0313474 B2 JPH0313474 B2 JP H0313474B2 JP 24197386 A JP24197386 A JP 24197386A JP 24197386 A JP24197386 A JP 24197386A JP H0313474 B2 JPH0313474 B2 JP H0313474B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- male
- side cylinder
- female
- locking device
- 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
Links
- 238000003780 insertion Methods 0.000 claims description 26
- 230000037431 insertion Effects 0.000 claims description 26
- 230000002093 peripheral effect Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、雌側筒体と雄側筒体を接続する管継
手に係り、特に迅速な接続を可能にした管継手に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pipe joint that connects a female cylinder and a male cylinder, and particularly to a pipe joint that enables quick connection.
迅速管継手においては、離接可能な雌側筒体と
雄側筒体との接続を、いわゆるボールロツク方式
により行なうようにしたものが従来から多く採用
されており、このボールロツク方式は、雌側筒体
の外周面に嵌合したスリーブと称する摺動環を軸
方向に移動することにより、この雌側筒体に設け
た施錠ボールを雄側筒体の外周壁に形成した円周
溝に係脱させる構造になつている。ところで管の
恒久的な接続に用いる管継手には、安価なものが
要求されるため、前記のようなボールロツク方式
を採用した場合にはコスト高になるおそれがあつ
て気易く使用できないという問題点があつた。
Many quick pipe fittings have conventionally used a so-called ball lock system to connect the female side cylinder and the male side cylinder, which can be separated and separated. By moving a sliding ring called a sleeve fitted to the outer peripheral surface of the body in the axial direction, the locking ball provided on the female side cylinder can be engaged and disengaged from the circumferential groove formed on the outer peripheral wall of the male side cylinder. It has a structure that allows By the way, the pipe joints used for permanently connecting pipes are required to be inexpensive, so if the ball lock method as described above is adopted, there is a problem that the cost may be high and it cannot be easily used. It was hot.
このようなボールロツク方式における問題点を
克服するものとして、コ字状施錠具を用いて雌側
筒体と雄側筒体を接続するようにした管継手も従
来から知られている。しかし、従来のコ字状施錠
具は、接続した管を軸方向に緊張させる形式をと
るものであるため、当該施錠具固有の弾発力が喪
失すると、ボールロツク方式より密封状態が低下
するおそれが生じるばかりでなく、前記弾発力を
持続させるための素材決定はもちろん、設計面、
加工面でも細心な注意が必要になるという問題点
があつた。 In order to overcome the problems of the ball lock system, a pipe joint in which a U-shaped locking tool is used to connect a female cylinder and a male cylinder is also known. However, since conventional U-shaped locks tension the connected pipe in the axial direction, if the lock loses its inherent elasticity, there is a risk that the sealing will be worse than with ball locks. In addition to determining the material to sustain the above-mentioned elastic force, there are also design aspects,
There was also a problem in that careful attention was required in the machining process.
本発明は、前述した従来のコ字状施錠具を用い
た管継手の問題点を克服し、特にコ字状施錠具に
格別の設計加工を施こさなくとも雌側筒体と雄側
筒体とを確実強固に接続することができ、しかも
この接続作業を迅速に行なうことのできる管継手
を提供することを目的とする。
The present invention overcomes the above-mentioned problems of the conventional pipe joint using the U-shaped locking device, and allows the female side tube and the male side tube to be connected without special design processing on the U-shaped locking device. It is an object of the present invention to provide a pipe joint which can reliably and firmly connect the pipes and which can quickly perform the connection work.
〔発明の概要〕
本発明は、雌側筒体内に雄側筒体を挿入し、コ
字状の施錠具によつて前記雌側筒体と雄側筒体と
を接続する管継手において、前記施錠具の両脚片
の間隔を前記雄側筒体の挿入部外径より小さい寸
法に形成するとともに、前記雌側筒体には2条の
貫通孔を雄側筒体の直径より若干狭い間隔を以て
平行に穿設して、コ字状施錠具を貫通孔内に挿入
したときに、前記施錠具の両脚片により前記雄側
筒体の一部分を求心方向に塑性変形させて前記雌
側筒体と雄側筒体を接続することを特徴としてい
る。[Summary of the Invention] The present invention provides a pipe joint in which a male cylinder is inserted into a female cylinder and the female cylinder and male cylinder are connected by a U-shaped locking tool. The distance between the legs of the locking tool is formed to be smaller than the outer diameter of the insertion part of the male side cylinder, and the female side cylinder has two through holes with a spacing slightly narrower than the diameter of the male side cylinder. When the U-shaped locking device is inserted into the through hole with parallel holes, a portion of the male cylinder body is plastically deformed in the centripetal direction by both leg pieces of the locking device, and the male cylinder body is connected to the female cylinder body. It is characterized by connecting the male side cylinder.
以下、本発明を図面に示す実施例により説明す
る。
The present invention will be explained below with reference to embodiments shown in the drawings.
第3図および第4図は本発明に係る管継手の雌
側筒体1および雄側筒体2を分解状態において示
すものであり、雌側筒体1は一開口端部に結合部
3を有している。4は雌側筒体1に軸方向に貫通
させた中心孔4である。この中心孔4内の一端部
には、図示しない導管を接続するための雌ねじ部
5が刻設されており、また、前記中心孔4の円筒
状周面を有する被挿入孔4A内には、この被挿入
孔4A内に挿入される雄側筒体2の挿入部6の端
面密封を行なうためのリング7と、雄側筒体2の
挿入部6の周面密封を行なうためのOリング8と
が適宜の間隔を隔てて嵌合されている。さらに筒
状本体3の開口端側には、2条の貫通孔9,9を
平行に穿設し、同貫通孔9,9のそれぞれの中央
部は被挿入孔4Aと所要範囲連通している。すな
わち、両貫通孔9,9は、それぞれの上下方向の
中央部が、第4図に示すように、被挿入孔4Aと
連通した状態で交差しており、したがつて両貫通
孔9,9間の間隔rは、被挿入孔4Aの内径
R′より小さい寸法である。 3 and 4 show the female side cylinder 1 and the male side cylinder 2 of the pipe joint according to the present invention in an exploded state, and the female side cylinder 1 has a coupling part 3 at one open end. have. Reference numeral 4 denotes a center hole 4 that passes through the female side cylinder 1 in the axial direction. A female threaded portion 5 for connecting a conduit (not shown) is formed at one end of the center hole 4, and an insertion hole 4A having a cylindrical peripheral surface of the center hole 4 includes: A ring 7 for sealing the end face of the insertion portion 6 of the male side cylinder 2 inserted into the insertion hole 4A, and an O-ring 8 for sealing the circumferential surface of the insertion portion 6 of the male side cylinder 2. are fitted with an appropriate spacing between them. Furthermore, two through holes 9, 9 are bored in parallel on the open end side of the cylindrical body 3, and the central portion of each of the through holes 9, 9 communicates with the insertion hole 4A to a required extent. . That is, as shown in FIG. 4, both the through-holes 9, 9 intersect with the insertion hole 4A in a state in which the center portions thereof in the vertical direction are in communication with the insertion hole 4A. The distance r between them is the inner diameter of the insertion hole 4A.
The dimension is smaller than R'.
一方、前記雄側筒体2は塑性変形する素材によ
り形成されており、この雄側筒体2は筒状本体1
0を有し、この筒状本体10の中心孔11内の一
端部には、図示しない導管を接続するための雌ね
じ部12が形成されている。また、この雌ねじ部
12と反対側の筒状本体10の端面10Aには、
前記中心孔11と連通する中心孔13を備えた直
径Rの前記挿入部6が一体に突設されている。こ
の挿入部6は、前記雌側筒体1の中心孔4の被挿
入孔4A内に挿入されるもので、同挿入部6の直
径Rは被挿入孔4Aの内径R′より若干小さく、
またこの挿入部6の軸方向長さは、その先端面6
Aが前記Oリング7を充分押圧し得るような長さ
に設定されている。 On the other hand, the male side cylindrical body 2 is formed of a plastically deformable material, and this male side cylindrical body 2 is formed of a cylindrical main body 1.
0, and a female threaded portion 12 for connecting a conduit (not shown) is formed at one end of the central hole 11 of the cylindrical body 10. In addition, on the end surface 10A of the cylindrical body 10 on the opposite side from the female threaded portion 12,
The insertion portion 6 having a diameter R and having a center hole 13 communicating with the center hole 11 is integrally provided. This insertion part 6 is inserted into the insertion hole 4A of the center hole 4 of the female side cylinder 1, and the diameter R of the insertion part 6 is slightly smaller than the inner diameter R' of the insertion hole 4A.
Moreover, the axial length of this insertion portion 6 is
A is set to a length that can sufficiently press the O-ring 7.
第2図において14は前記雄側筒体2を雌側筒
体1に接続するための施錠具で、このコ字状施錠
具14は、第2図に詳示するように、前記雌側筒
体1の貫通孔9,9に挿入され得る1対の平行な
脚片15,15と、両脚片15,15を前記両貫
通孔9,9の間隔とほぼ等しく、被挿入孔4Aの
内径より小さい寸法を保持するように結合する基
部16とにより一体に形成されている。このコ字
状施錠具14は、前記雄側筒体2の挿入部6を塑
性変形し得る剛体材料により形成されている。な
お、脚片15,15の断面形状は円形または角形
で、その断面形状に合せて貫通孔9,9の断面形
状も決定されている。 In FIG. 2, 14 is a locking tool for connecting the male side cylinder 2 to the female side cylinder 1, and this U-shaped locking device 14 is connected to the female side cylinder as shown in detail in FIG. A pair of parallel leg pieces 15, 15 that can be inserted into the through holes 9, 9 of the body 1, and both leg pieces 15, 15 are arranged at a distance approximately equal to the distance between the two through holes 9, 9, and from the inner diameter of the inserted hole 4A. It is integrally formed with a base portion 16 which is joined to maintain its small dimensions. This U-shaped locking tool 14 is made of a rigid material that can plastically deform the insertion portion 6 of the male side cylinder 2. Note that the cross-sectional shape of the leg pieces 15, 15 is circular or square, and the cross-sectional shape of the through holes 9, 9 is also determined according to the cross-sectional shape.
第2図に示すコ字状施錠具14の脚片15は円
形で、その先端部には、貫通孔9,9への挿入を
しやすくするための先細りのテーパ曲面17が形
成されている。 The leg piece 15 of the U-shaped locking tool 14 shown in FIG. 2 is circular, and a tapered curved surface 17 is formed at the tip thereof to facilitate insertion into the through holes 9, 9.
つぎに、前述した実施例の作用を説明する。 Next, the operation of the above-described embodiment will be explained.
雌側筒体1と雄側筒体2とを接続するには、ま
ず、雌側筒体1の中心孔4の被挿入孔4A内に雄
側筒体2の挿入部6を挿入し、挿入部6の先端面
6Aが被挿入孔4A内のOリング7を充分に押圧
するまで挿入したら、雌側筒体1の筒状本体3に
形成されている両貫通孔9,9内にコ字状施錠具
14の両脚片15,15を挿入する。貫通孔9,
9の中央部分は被挿入孔4Aと連通していて、挿
入された挿入部6の周壁6Bの一部が臨んでいる
ので、両脚片15,15を圧入することにより、
第1図および第2図に示すように、各脚片15の
テーパ曲面17により周壁6Bが求心方向に押圧
されて塑性変形を起し、周壁6Bには、相対向す
る位置に接線方向の1対の直線凹部18,18が
形成される。この状態は、コ字状施錠具14の脚
片15を係合させるための溝を予め雄側筒体2の
表面に形成した従来のこの種の管継手の係止状態
よりも強固な係止状態である。このようにして、
コ字状施錠具14の両脚片15,15が雄側筒体
2に強固に係合することにより雌側筒体1に保持
されているコ字状施錠具14の両脚片15,15
は雌雄の両筒体1,2を軸方向、半径方向ともに
強固に係合して両筒体1,2が接続される。この
雌側筒体1と雄側筒体2との接続状態においては
リング7とOリング8とにより雄側筒体2の挿入
部6の端面ならびに周面の密封状態を維持され、
しかも、コ字状施錠具14の両脚片15,15は
挿入部6の周壁6Bを塑性変形させているため周
壁6Bは両脚片15,15と相互に圧接状態とな
り、コ字状施錠具14が抜けることは絶対にな
い。 To connect the female side cylinder 1 and the male side cylinder 2, first insert the insertion part 6 of the male side cylinder 2 into the insertion hole 4A of the center hole 4 of the female side cylinder 1. When the end face 6A of the part 6 is inserted until the O-ring 7 in the inserted hole 4A is sufficiently pressed, a U-shaped hole is inserted into both the through holes 9, 9 formed in the cylindrical body 3 of the female side cylinder 1. Insert the leg pieces 15, 15 of the shaped locking tool 14. Through hole 9,
The central part of 9 communicates with the insertion hole 4A, and a part of the peripheral wall 6B of the inserted insertion part 6 faces, so by press-fitting the leg pieces 15, 15,
As shown in FIGS. 1 and 2, the circumferential wall 6B is pressed in the centripetal direction by the tapered curved surface 17 of each leg piece 15, causing plastic deformation, and the circumferential wall 6B has a tangential curve at opposing positions. A pair of linear recesses 18, 18 are formed. This state is a stronger locking state than the locking state of a conventional pipe joint of this type in which a groove for engaging the leg piece 15 of the U-shaped locking device 14 is formed in advance on the surface of the male side cylinder 2. state. In this way,
Both leg pieces 15, 15 of the U-shaped locking tool 14 are held on the female side cylinder 1 by firmly engaging the male side cylinder 2 with both leg pieces 15, 15 of the U-shaped locking tool 14.
The male and female cylindrical bodies 1 and 2 are firmly engaged in both the axial and radial directions to connect the male and female cylindrical bodies 1 and 2. In this connected state between the female side cylinder 1 and the male side cylinder 2, the ring 7 and the O-ring 8 maintain the sealed state of the end surface and the circumferential surface of the insertion part 6 of the male side cylinder 2,
Moreover, since both leg pieces 15, 15 of the U-shaped locking device 14 plastically deform the peripheral wall 6B of the insertion portion 6, the circumferential wall 6B is in pressure contact with both leg pieces 15, 15, and the U-shaped locking device 14 There's no way you can get out of it.
前述したように本実施例によれば、雄側筒体2
にあらかじめ特殊な加工を施しておくことなく雌
側筒体1と雄側筒体2を接続できるので、作業性
がよく、しかも迅速に雌雄の筒体1,2を接続す
ることができる。 As described above, according to this embodiment, the male side cylinder 2
Since the female side cylinder body 1 and the male side cylinder body 2 can be connected without performing any special processing in advance, the workability is good and the male and female cylinder bodies 1 and 2 can be connected quickly.
本発明によれば、コ字状施錠具の脚片により雄
側筒体を求心方向に塑性変形させて雌側筒体と雄
側筒体とを接続することができるようにしたの
で、コ字状施錠具に格別の設計、加工を施こさな
くとも、雌側筒体と雄側筒体とを確実、強固に接
続することができ、当該施錠具の加工工程を簡略
化できる。また、接続作業の際にコ字状施錠具に
より雄側筒体を塑性変形させるので、雄側筒体の
外周面に、当該施錠具を係止する円周溝が必要で
なく、さらには、塑性変形した雄側筒体がコ字状
施錠具の脚片に圧接することによりコ字状施錠具
の完壁な緩み止めがはかれるという特長があり、
密封性を長期にわたつて維持することができると
いう絶大な効果がある。
According to the present invention, the male side cylinder is plastically deformed in the centripetal direction by the legs of the U-shaped locking device to connect the female side cylinder and the male side cylinder. The female side cylinder and the male side cylinder can be connected reliably and firmly without special design or processing on the locking device, and the manufacturing process of the locking device can be simplified. In addition, since the male cylinder is plastically deformed by the U-shaped locking tool during connection work, there is no need for a circumferential groove on the outer peripheral surface of the male cylinder to lock the locking tool. It has the feature that the plastically deformed male side cylinder comes into pressure contact with the legs of the U-shaped locking device, thereby completely preventing the U-shaped locking device from loosening.
It has the tremendous effect of being able to maintain sealing over a long period of time.
図面は本発明に係る管継手の1実施例を示すも
ので、第1図は横断面図、第2図は第1図の−
線上で切断した相当部分の縦断面図、第3図お
よび第4図はそれぞれ分解状態にある雌側筒体と
雄側筒体の平面図および横断面図で、第3図は貫
通孔が角形の例を示し、第4図は貫通孔が円形の
例を示す。
1……雌側筒体、2……雄側筒体、4……中心
孔、6……挿入部、7,8……Oリング、9……
貫通孔、11……中心孔、14……コ字施錠具、
15……脚片、18……凹部。
The drawings show one embodiment of the pipe joint according to the present invention, and FIG. 1 is a cross-sectional view, and FIG. 2 is a cross-sectional view of FIG. 1.
3 and 4 are a plan view and a cross sectional view, respectively, of the female cylinder and male cylinder in an exploded state, and in Figure 3, the through hole is rectangular. FIG. 4 shows an example in which the through hole is circular. 1... Female cylinder, 2... Male cylinder, 4... Center hole, 6... Insertion part, 7, 8... O-ring, 9...
Through hole, 11...center hole, 14...U-shaped locking tool,
15...leg piece, 18...recess.
Claims (1)
錠具によつて前記雌側筒体と雄側筒体とを接続す
る管継手において、前記施錠具の両脚片の間隔を
前記雄側筒体の挿入部外径より小さい寸法に形成
するとともに、前記雌側筒体には2条の貫通孔を
雄側筒体の直径より若干狭い間隔を以て平行に穿
設して、コ字状施錠具を貫通孔内に挿入したとき
に、前記施錠具の両脚片により前記雄側筒体の一
部分を求心方向に塑性変形させて前記雌側筒体と
雄側筒体を接続することを特徴とする管継手。1. In a pipe joint in which a male cylinder is inserted into a female cylinder and the female cylinder and male cylinder are connected by a U-shaped locking device, the distance between the legs of the locking device is The outer diameter of the insertion part of the male side cylinder is smaller than the outer diameter of the insertion part, and two through holes are bored in the female side cylinder in parallel with an interval slightly narrower than the diameter of the male side cylinder. When the letter-shaped locking device is inserted into the through hole, a portion of the male cylinder body is plastically deformed in a centripetal direction by both leg pieces of the locking device, thereby connecting the female side cylinder body and the male side cylinder body. A pipe joint featuring:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24197386A JPS6396388A (en) | 1986-10-14 | 1986-10-14 | Pipe joint |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24197386A JPS6396388A (en) | 1986-10-14 | 1986-10-14 | Pipe joint |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6396388A JPS6396388A (en) | 1988-04-27 |
JPH0313474B2 true JPH0313474B2 (en) | 1991-02-22 |
Family
ID=17082341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24197386A Granted JPS6396388A (en) | 1986-10-14 | 1986-10-14 | Pipe joint |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6396388A (en) |
-
1986
- 1986-10-14 JP JP24197386A patent/JPS6396388A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6396388A (en) | 1988-04-27 |
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