JPS63180794A - Pipe joint - Google Patents
Pipe jointInfo
- Publication number
- JPS63180794A JPS63180794A JP1154687A JP1154687A JPS63180794A JP S63180794 A JPS63180794 A JP S63180794A JP 1154687 A JP1154687 A JP 1154687A JP 1154687 A JP1154687 A JP 1154687A JP S63180794 A JPS63180794 A JP S63180794A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- piston body
- pipe joint
- flange
- pressure
- 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
- 239000012530 fluid Substances 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Joints Allowing Movement (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）
本発明は管継手、詳しくは高圧の油類または空気等流体
の流体回路に用いられ、流体の管路を継ぐ伸縮自在な管
継手に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a pipe joint, and more particularly to a telescopic pipe joint used in a fluid circuit for fluids such as high-pressure oil or air to connect fluid pipe lines.
（従来の技術とその問題点）
従来の管継手としては、例えば第４図に示すようなもの
がある。第４図において、１は管継手であり、管継手１
は、大径の鉄パイプに一端部２ａを螺合したシリンダ２
と、シリンダ２の他端部２ｂからシリンダ２内に摺動自
在に挿入した小径の鉄パイプに連結したパイプ状のピス
トン（外径り、）３を有している。ピストン３はシリン
ダ２の他端部に固定ネジ４により０リングを内包する環
状リング５を介して摺動可能に取付けられている。(Prior art and its problems) As a conventional pipe joint, there is one shown in FIG. 4, for example. In Fig. 4, 1 is a pipe joint, and pipe joint 1
is a cylinder 2 whose one end 2a is screwed onto a large-diameter iron pipe.
It has a pipe-shaped piston (outer diameter) 3 connected to a small diameter iron pipe slidably inserted into the cylinder 2 from the other end 2b of the cylinder 2. The piston 3 is slidably attached to the other end of the cylinder 2 by a fixing screw 4 via an annular ring 5 containing an O-ring.
このような管継手１においては、ピストンにはピストン
３内の液体の液圧Ｐによりピストン３を押出すような次
式
で示す押出力Ｆが作用する。この押出力Ｆは、水道配管
のように、液圧Ｐが２〜１０に＋ｒｆ／ｃｎ程度の圧力
である場合には管継手１の両端に取付ける配管部材の鉄
パイプ等の圧縮または曲げ強度に比較して非常゛に小さ
いので配管部材への影響は無視できる。In such a pipe joint 1, a pushing force F expressed by the following equation acts on the piston to push out the piston 3 due to the hydraulic pressure P of the liquid inside the piston 3. When the liquid pressure P is about 2 to 10 + rf/cn, such as in water piping, this pushing force F is determined by the compression or bending strength of the iron pipe, etc., of the piping member attached to both ends of the pipe joint 1. Since it is very small in comparison, the effect on piping members can be ignored.
しかしながら、油圧配管等のように、液圧Ｐが非常に高
い場合には、押出力Ｆは非常に大きくなり、配管部材に
与える影響が大きく、ときには、鉄パイプの折損が起こ
ったり、使用中に管継手の長さの調節が人手でできない
という問題点がある。However, when the liquid pressure P is very high, such as in hydraulic piping, the extrusion force F becomes very large, which has a large effect on the piping components, and sometimes causes breakage of the iron pipe or during use. There is a problem in that the length of the pipe joint cannot be adjusted manually.
また、油圧配管をする場合、第５．６図に示すように、
複数（通常４〜７本、この例は４本）のホース（ホース
口径１／２〜２”、ホース長４〜７ｍ）６の両端６ａに
口金具７を固定し、一端の口金具７Ａは機器に取付金具
８Ａを用いて取付け、他端の口金具７Ｂは各ホース６を
弯曲してクランプ９により可撓枠１０に取付けるととも
に単一方向に移動できるよう他の機器に取付金具８Ｂに
より取付ける、いわゆるケーブルヘアーによる油圧配管
が行われる場合がある。この際、各ホースの全長の寸法
は通常１〜２％の長さのバラツキがあり、これらの各ホ
ース６は可撓枠１０に取付ける前に各ホース６の全長に
合わせて取付金具８Ａまたは８８の全長を調整製作しな
ければならないという問題点がある。In addition, when installing hydraulic piping, as shown in Figure 5.6,
A cap 7 is fixed to both ends 6a of a plurality of hoses (usually 4 to 7, in this example 4) (hose diameter 1/2 to 2", hose length 4 to 7 m), and one end of the cap 7A is It is attached to a device using a mounting bracket 8A, and the mouth fitting 7B at the other end is attached to a flexible frame 10 by bending each hose 6 and using a clamp 9, and is also attached to another device using a mounting bracket 8B so that it can be moved in a single direction. In some cases, hydraulic piping is performed using so-called cable hair.In this case, the total length of each hose usually varies by 1 to 2%, and each hose 6 is However, there is a problem in that the total length of the mounting bracket 8A or 88 must be adjusted according to the total length of each hose 6.
また、ホース６は液圧が加わると長さの変化が起こり、
一般的にはホース６が伸びるため、ホース６は機器に取
付は使用の約１ケ月後に、再度取付金具８Ａ、８１１の
全長を調整し製作をする必要がある。この調整をしない
と、ホース６の伸びによる力によりクランプ９が破壊し
たり、ホース６が破損するという問題点がある。In addition, the length of the hose 6 changes when hydraulic pressure is applied.
Generally, since the hose 6 stretches, it is necessary to adjust the overall length of the mounting fittings 8A and 811 again and manufacture the hose 6 after about one month of use. If this adjustment is not made, there will be a problem that the clamp 9 will be destroyed or the hose 6 will be damaged due to the force caused by the elongation of the hose 6.
そこで本発明は、流体回路に用いる伸縮自在の管継手の
管内の液圧による伸縮方向の力を相殺し、管継手の長さ
を任意の位置で止められるとともに高圧の液圧を加圧中
でも人手によって容易に長さの調整ができる管継手を提
供することを目的とする。Therefore, the present invention cancels out the force in the expansion and contraction direction due to the liquid pressure inside the pipe of a telescopic pipe joint used in a fluid circuit, and allows the length of the pipe joint to be stopped at any position, and even when high pressure is applied, it is possible to manually control the length of the pipe joint. The purpose of the present invention is to provide a pipe joint whose length can be easily adjusted.
（問題点を解決するための手段）
本発明に係る管継手は、管状のシリンダと、シリンダの
一端部に取付けられシリンダ内に突入しシリンダ内壁と
の間に一定の間隔を有する空間を形成する管状の突部を
有するフランジと、シリンダとフランジの突部との間に
摺動可能に挿入されシリンダとフランジの突部との間の
空間を圧力室と空気室とに画成する画成部材を有する管
状のピストン体と、を備え、ピストン体がピストン体内
に導入される圧力液の液圧によりピストン体の軸方向の
一方側に押力を受ける管継手であって、該ピストン体に
該圧力室とピストン体内と連通ずる連通孔を形成され、
該シリンダに該空気室に外気大気圧を導入する大気導入
孔を形成し、該ピストン体の画成部材が圧力室内の液圧
を受けて前記押力と反対方向に均衡する押力を受けるこ
とを特徴としている。(Means for Solving the Problems) A pipe joint according to the present invention forms a space having a constant distance between a tubular cylinder and an inner wall of the cylinder that is attached to one end of the cylinder and extends into the cylinder. a flange having a tubular protrusion; and a defining member that is slidably inserted between the cylinder and the protrusion of the flange and defines a space between the cylinder and the protrusion of the flange into a pressure chamber and an air chamber. a tubular piston body, the piston body being pushed toward one side in the axial direction of the piston body by the hydraulic pressure of pressure fluid introduced into the piston body, A communication hole is formed that communicates between the pressure chamber and the inside of the piston body,
An air introduction hole is formed in the cylinder to introduce outside atmospheric pressure into the air chamber, and the defining member of the piston body receives a hydraulic pressure in the pressure chamber and receives a pushing force balanced in a direction opposite to the pushing force. It is characterized by
（作用）
本発明の管継手は、管状のシリンダと、シリンダ内に突
入する管状の突部を有するフランジと、シリンダとフラ
ンジの突部の間に摺動可能に挿入され圧力室を画成する
画成部材を有するピストン体とを備え、ピストン体がピ
ストン体内の圧力液の液圧によりピストン体の軸方向の
一方側に押力を受けるとともにピストン体の画成部材が
圧力室内の液圧を受けて前記押力と反対方向に均衡する
押力を受けるので、ピストン体は、圧力液の液圧の大き
さに関係なく、シリンダとフランジの突部との間に人手
によって摺動しながら挿入して管継手の長さを調節でき
るとともに、液圧に関係なく任意の位置で止めることが
できる。(Function) The pipe joint of the present invention includes a tubular cylinder, a flange having a tubular protrusion that protrudes into the cylinder, and a pressure chamber that is slidably inserted between the cylinder and the protrusion of the flange. and a piston body having a defining member, the piston body being pushed toward one side in the axial direction of the piston body by the hydraulic pressure of the pressure fluid within the piston body, and the defining member of the piston body increasing the hydraulic pressure within the pressure chamber. Since the piston body receives a pushing force that is balanced in the opposite direction to the above pushing force, the piston body can be manually inserted while sliding between the cylinder and the protrusion of the flange, regardless of the magnitude of the hydraulic pressure of the pressure fluid. In addition to adjusting the length of the pipe joint, it can be stopped at any position regardless of hydraulic pressure.
（実施例） 以下、本発明の実施例を図面に基づき説明する。(Example) Embodiments of the present invention will be described below based on the drawings.
第１．２図は本発明に係る管継手の第１実施例を示す図
である。FIG. 1.2 is a diagram showing a first embodiment of a pipe joint according to the present invention.
まず、構成について説明する。第１．２図において、１
１は管継手であり、管継手１１の一端部１１ａは油圧機
器１２の油圧取入部１２ａに取付けられ、管継手１１の
他端部１１ｂは油圧ホース（口径１／２”、全長５ｍ）
１４の一端部１４ａの口金具１５に取付けられている。First, the configuration will be explained. In Figure 1.2, 1
1 is a pipe joint, one end 11a of the pipe joint 11 is attached to the hydraulic intake part 12a of the hydraulic equipment 12, and the other end 11b of the pipe joint 11 is a hydraulic hose (caliber 1/2", total length 5 m).
14 is attached to the cap fitting 15 at one end 14a.
油圧ホース１４は、第２図に一部を示すように、従来の
技術にて示した油圧配管（第５．６図）と同様に単一の
方向に移動する移動台１７の周囲に沿ってホースクラン
プ１８により移動台１７に固定されている。油圧ホース
１４の一端部１４ａは移動台１７とともに図の左側に移
動可能であり、油圧ホース１４の他端部は図示していな
い固定した他の油圧機器に取付けられている。同様な油
圧ホース１４が４本整然と移動台１７の周囲に配管され
いわゆるケーブルへアーによる配管が行われている。The hydraulic hose 14, as partially shown in FIG. 2, runs along the periphery of the movable table 17 that moves in a single direction, similar to the hydraulic piping shown in the prior art (FIG. 5.6). It is fixed to the movable table 17 with a hose clamp 18. One end portion 14a of the hydraulic hose 14 is movable to the left side in the figure together with the movable table 17, and the other end portion of the hydraulic hose 14 is attached to another fixed hydraulic device (not shown). Four similar hydraulic hoses 14 are arranged around the movable table 17, and piping is performed by so-called cable hair.
第１図において、管継手１１は管状のシリンダ（内径Ｃ
ｎ）２０と、シリンダ２ｏの一端部２０ａに取付けられ
たフランジ２１を有している。フランジ２１の一端部２
１ａは口金具１５の先端部１５ａに螺合して固定され、
フランジ２１の他端部２１ｂは管状の突部２１ｂからな
り、シリンダ２０内に突入し、内壁２０ｂとの間に一定
の間隔を有する環状の空間２３を形成している。シリン
ダ２０とフランジ２１の突部２１ｂとの間には管状のピ
ストン体（外径Ａｍ、内径Ｂｉｎ）２５が摺動可能に挿
入され、ピストン体２５の管状の一端部２５ａは油圧機
器１２の油圧取入部１２ａに螺合し、ピストン体２５の
他端部２５ｂには鍔状に突出した画成部材２６が一体的
に設けられ、空間２３を圧力室２７と空気室２８とに画
成する。３ｏは連通孔であり、連通孔３０はピストン体
２５の他端部２５ｂに圧力室２７とピストン体２５内と
を連通すよう形成されている。３１は大気導入孔であり
、大気導入孔３１はシリンダ２０に形成され空気室２８
内に外気大気圧を導入する。３３．３４．３５は０リン
グであり、３６．３７．３８は０リング３３．３４．３
５をそれぞれ支持するハックアップリングである。In FIG. 1, the pipe fitting 11 is a tubular cylinder (inner diameter C
n) 20 and a flange 21 attached to one end 20a of the cylinder 2o. One end 2 of flange 21
1a is screwed and fixed to the tip 15a of the cap fitting 15,
The other end 21b of the flange 21 consists of a tubular protrusion 21b, protrudes into the cylinder 20, and forms an annular space 23 with a constant distance between it and the inner wall 20b. A tubular piston body (outer diameter Am, inner diameter Bin) 25 is slidably inserted between the cylinder 20 and the protrusion 21b of the flange 21, and one tubular end 25a of the piston body 25 is connected to the hydraulic pressure of the hydraulic equipment 12. A defining member 26 is integrally provided on the other end 25b of the piston body 25 to be screwed into the intake portion 12a and protrudes like a brim, thereby defining the space 23 into a pressure chamber 27 and an air chamber 28. 3o is a communication hole, and the communication hole 30 is formed at the other end 25b of the piston body 25 so that the pressure chamber 27 and the inside of the piston body 25 communicate with each other. 31 is an air introduction hole, and the air introduction hole 31 is formed in the cylinder 20 and is connected to the air chamber 28.
Introduce outside atmospheric pressure inside. 33.34.35 is 0 ring, 36.37.38 is 0 ring 33.34.3
It is a hack up ring that supports 5 respectively.
ピストン体２５はピストン体２５内に導入される圧力液
の液圧Ｐによりピストン体２５の軸方向で図の左方向（
矢印Ｌ）に次式
％式％
に示す押力Ｆ１を受ける。また、ピストン体２５の画成
部材２６は、圧力室２７の液圧Ｐを画成部材２６の圧力
室２７内の環状面２６ａに受け、ピストン化２５の軸方
向で図の右方向（矢印Ｒ）に、すなわち前述の押力Ｆ、
の方向と反対方向に、次式
に示す押力Ｆ２を受け、押力Ｆ２は押力Ｆ、と均衡して
いる。The piston body 25 moves toward the left in the figure in the axial direction of the piston body 25 due to the hydraulic pressure P of the pressure fluid introduced into the piston body 25.
A pushing force F1 shown by the following formula (%) is applied to the arrow L). Further, the defining member 26 of the piston body 25 receives the hydraulic pressure P of the pressure chamber 27 on an annular surface 26a inside the pressure chamber 27 of the defining member 26, and moves in the right direction (arrow R ), that is, the aforementioned pushing force F,
A pushing force F2 expressed by the following equation is applied in a direction opposite to the direction of , and the pushing force F2 is balanced with the pushing force F.
次に、作用について説明する。Next, the effect will be explained.
本発明の管継手１１は、シリンダ２０とフランジ２１の
突部２１ｂとの間にピストン体２５が摺動可能に挿入さ
れるとともに、ピストン体２５が液圧Ｐによる軸方向で
図の左方向（矢印り方向）に押出される押力ＦＩと、軸
方向で図の右方向（矢印Ｒ方向）に押出される押力Ｆ２
とは均衡しているので、ピストン体２５はピストン体２
５内の圧力液の液圧Ｐの大きさに関係な（、シリンダ２
０とフランジ２１の突部２１ｂとの間にこの間の摺動抵
抗以上に僅かな力によって人手により摺動しながら挿入
して管継手の長さを調節できる。また、ピストン体２５
はシリンダ２０に対して任意の位置に止めることができ
る。In the pipe joint 11 of the present invention, the piston body 25 is slidably inserted between the cylinder 20 and the protrusion 21b of the flange 21, and the piston body 25 is moved in the axial direction by the hydraulic pressure P toward the left in the figure ( A pushing force FI that is pushed out in the direction of the arrow) and a pushing force F2 that is pushed out in the axial direction to the right in the figure (direction of the arrow R)
are in balance, so the piston body 25 is equal to the piston body 2
(, cylinder 2
0 and the protrusion 21b of the flange 21, the length of the pipe joint can be adjusted by manually inserting it while sliding with a slight force greater than the sliding resistance therebetween. In addition, the piston body 25
can be stopped at any position relative to the cylinder 20.
これらのため、第２図に示すような油圧配管においては
、移動台１７に取付ける４木の油圧ボース１４の長さに
バラツキがあっても、各ホース１４の口金具１５に取付
けられた管継手１１ （ＩＩＡ〜１１Ｄ）の長す１１Ａ
〜１１Ｄを人手によりそれぞれ調節をすることにより、
従来のように各種の長さの取付金具を調整製作すること
もなく、適正な長さで移動台１７に固定することができ
る。また、ホース使用後の１ケ月後の再調整時にも前述
と同様に管継手１１の調整により従来の取付金具の調整
製作が不要で、油圧ホース１４および管継手１１の取付
け、再調整が極めて容易で迅速にでき、作業費用が大幅
に低減できる。For these reasons, in hydraulic piping as shown in FIG. 11 (IIA-11D) length 11A
~ By manually adjusting each of 11D,
It is possible to fix the device to the movable base 17 at an appropriate length without adjusting and manufacturing mounting brackets of various lengths as in the conventional case. Furthermore, when readjusting the hose after one month of use, the pipe fitting 11 can be adjusted in the same manner as described above, eliminating the need for adjusting and fabricating conventional mounting fittings, making installation and readjustment of the hydraulic hose 14 and pipe fitting 11 extremely easy. It can be done quickly and work costs can be significantly reduced.
次に、本発明の第２実施例につき説明する。Next, a second embodiment of the present invention will be described.
第３図は本発明に係る管継手の第２実施例を示す図であ
る。FIG. 3 is a diagram showing a second embodiment of the pipe joint according to the present invention.
第２実施例においては、本発明の管継手４１のフランジ
２１側を機器１２に取付け、ピストン体４２の先端部４
２ａが、ホース１４の先端部１４ａに固定された口金具
１５の内金具と一体的に形成された場合である。第１実
施例と同し構成には同じ符号をっけ説明を省略する。In the second embodiment, the flange 21 side of the pipe joint 41 of the present invention is attached to the device 12, and the tip end 4 of the piston body 42 is attached to the device 12.
2a is formed integrally with the inner metal fitting of the cap fitting 15 fixed to the distal end portion 14a of the hose 14. Components that are the same as those in the first embodiment are given the same reference numerals and explanations will be omitted.
（効果）
以上説明したように、本発明によれば、流体回路に用い
る伸縮自在の管継手の管内の液圧による伸縮方向の力を
相殺し、管継手の長さを任意にできるとともに、高圧の
液圧を加圧中でも人手によって容易に長さの調節ができ
る。また、本発明の管継手を取付けた複数のホースをい
わゆるケーブルベアーに装着することにより、ホースの
取付時の取付は長さの調節および使用後の長さの再調節
が人手により容易に迅速にでき作業費用が大幅に低減で
きる。(Effects) As explained above, according to the present invention, the force in the expansion and contraction direction due to the hydraulic pressure inside the pipe of a telescoping pipe joint used in a fluid circuit can be canceled out, the length of the pipe joint can be made arbitrary, and the length of the pipe joint can be adjusted as desired. The length can be easily adjusted manually even when the hydraulic pressure is applied. In addition, by attaching a plurality of hoses to which the pipe joints of the present invention are attached to a so-called cable carrier, the length of the hoses can be adjusted easily and quickly by hand, and the length can be readjusted after use. The cost of work can be significantly reduced.
第１．２図は本発明に係る管継手の第１実施例を示す図
であり、第１図はその縦断面図、第２図はその使用時の
状態を示す一部平面図、第３図は本発明に係る管継手の
第２実施例を示す一部断面図である。第４〜６図は従来
の管継手を示す図であり、第４図はその縦断面図、第５
．６図はそれぞれ、その使用時の状態を示す平面図およ
び側面図である。
１１．４１・・・・・・管継手、
１２・・・・・・油圧機器、
１４・・・・・・油圧ホース、
１５・・・・・・口金具、
１７・・・・・・移動台、
１８・・・・・・ホースクランプ、
２０・・・・・・シリンダ、
２１・・・・・・フランジ、
２３・・・・・・空間、
２５．４２・・・・・・ピストン体、
２６・・・・・・画成部材、
２７・・・・・・圧力室、
２８・・・・・・空気室、
３０・・・・・・連通孔、
３１・・・・・・大気導入孔、
Ａ・・・・・・ピストン体の外径、
Ｂ・・・・・・ピストン体の内径、
Ｃ・・・・・・シリンダの内径、
Ｐ・・・・・・液圧。1.2 is a diagram showing a first embodiment of the pipe joint according to the present invention, FIG. 1 is a longitudinal sectional view thereof, FIG. 2 is a partial plan view showing the state in use, and FIG. The figure is a partially sectional view showing a second embodiment of the pipe joint according to the present invention. Figures 4 to 6 are diagrams showing conventional pipe joints, with Figure 4 being a longitudinal sectional view and Figure 5
．． 6 is a plan view and a side view, respectively, showing the state in use. 11.41... Pipe fitting, 12... Hydraulic equipment, 14... Hydraulic hose, 15... Fitting, 17... Movement Base, 18... Hose clamp, 20... Cylinder, 21... Flange, 23... Space, 25.42... Piston body , 26...Defining member, 27...Pressure chamber, 28...Air chamber, 30...Communication hole, 31...Atmosphere Introduction hole, A...Outer diameter of the piston body, B...Inner diameter of the piston body, C...Inner diameter of the cylinder, P...Liquid pressure.
Claims (1)
ンダ内に突入しシリンダ内壁との間に一定の間隔を有す
る空間を形成する管状の突部を有するフランジと、シリ
ンダとフランジの突部との間に摺動可能に挿入されシリ
ンダとフランジの突部との間の空間を圧力室と空気室と
に画成する鍔状に突出した画成部材を有する管状のピス
トン体と、を備え、ピストン体がピストン体内に導入さ
れる圧力液の液圧によりピストン体の軸方向の一方側に
押力を受ける管継手であって、該ピストン体に該圧力室
とピストン体内と連通する連通孔を形成され、該シリン
ダに該空気室に外気大気圧を導入する大気導入孔を形成
し、該ピストン体の画成部材が圧力室内の液圧を受けて
前記押力と反対方向に均衡する押力を受けることを特徴
とする管継手。A tubular cylinder, a flange having a tubular protrusion that is attached to one end of the cylinder, protrudes into the cylinder, and forms a space having a certain distance between the inner wall of the cylinder, and the protrusion of the cylinder and the flange. a tubular piston body having a flange-shaped defining member that is slidably inserted into the cylinder and defines a space between the cylinder and the protrusion of the flange into a pressure chamber and an air chamber; is a pipe joint which is pushed toward one side of the piston body in the axial direction by the hydraulic pressure of pressure fluid introduced into the piston body, and the piston body has a communication hole that communicates with the pressure chamber and the piston body. , an air introduction hole is formed in the cylinder to introduce outside atmospheric pressure into the air chamber, and the defining member of the piston body receives a hydraulic pressure in the pressure chamber and receives a pushing force balanced in a direction opposite to the pushing force. A pipe joint characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62011546A JPH0721320B2 (en) | 1987-01-20 | 1987-01-20 | Pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62011546A JPH0721320B2 (en) | 1987-01-20 | 1987-01-20 | Pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63180794A true JPS63180794A (en) | 1988-07-25 |
| JPH0721320B2 JPH0721320B2 (en) | 1995-03-08 |
Family
ID=11780958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62011546A Expired - Lifetime JPH0721320B2 (en) | 1987-01-20 | 1987-01-20 | Pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0721320B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014081045A (en) * | 2012-10-17 | 2014-05-08 | Sankei Giken:Kk | Non-reaction type expansion joint and assembly thereof |
| JP2014163425A (en) * | 2013-02-22 | 2014-09-08 | Yokohama Rubber Co Ltd:The | Pipe joint structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09193208A (en) * | 1996-01-17 | 1997-07-29 | Meisei Kinzoku Kogyosho:Kk | Extension nozzleless molding machine for family runnerless mold |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4922619A (en) * | 1972-06-28 | 1974-02-28 |
-
1987
- 1987-01-20 JP JP62011546A patent/JPH0721320B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4922619A (en) * | 1972-06-28 | 1974-02-28 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014081045A (en) * | 2012-10-17 | 2014-05-08 | Sankei Giken:Kk | Non-reaction type expansion joint and assembly thereof |
| JP2014163425A (en) * | 2013-02-22 | 2014-09-08 | Yokohama Rubber Co Ltd:The | Pipe joint structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0721320B2 (en) | 1995-03-08 |
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