JPS62224706A - Fluid pressure cylinder - Google Patents

Fluid pressure cylinder

Info

Publication number
JPS62224706A
JPS62224706A JP61067718A JP6771886A JPS62224706A JP S62224706 A JPS62224706 A JP S62224706A JP 61067718 A JP61067718 A JP 61067718A JP 6771886 A JP6771886 A JP 6771886A JP S62224706 A JPS62224706 A JP S62224706A
Authority
JP
Japan
Prior art keywords
piston
fluid
cushion chamber
pressure
cylinder
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.)
Pending
Application number
JP61067718A
Other languages
Japanese (ja)
Inventor
Makoto Nishikawa
誠 西川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maruzen Sewing Machine Co Ltd
Original Assignee
Maruzen Sewing Machine Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maruzen Sewing Machine Co Ltd filed Critical Maruzen Sewing Machine Co Ltd
Priority to JP61067718A priority Critical patent/JPS62224706A/en
Publication of JPS62224706A publication Critical patent/JPS62224706A/en
Pending legal-status Critical Current

Links

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  • Actuator (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

PURPOSE:To reduce a shock of collision and its noise, by fitting a protrusive part so as to form a circular cushion chamber between a piston and the member of a cylinder main unit to which the piston is opposed CONSTITUTION:A circular cushion chamber 25 is formed by fitting a protrusive part 21 between a piston 5 and the member of a cylinder main unit 1, to which the piston is opposed, while a pressure regulating valve 31, the opens when the pressure of fluid in the cushion chamber 25 increases to the preset value, is provided in a fluid relief passage 27 communicating with the cushion chamber 25. In this way, a noise of collision can be reduced while its shock can be decreased.

Description

【発明の詳細な説明】 (産業上の利用分野) この発明は、流体圧シリンダに関する。[Detailed description of the invention] (Industrial application field) TECHNICAL FIELD This invention relates to a fluid pressure cylinder.

(従来技術の欠点) 従来、この種の流体圧シリンダには以下のような欠点が
あった。即ち、シリンダの使用時に、往復運動するピス
トンが、その往復運動のたびにヘッドカバー又はロッド
カバーと衝突するためそのffが騒々しく、また、衝突
のショックによってシリンダの寿命が短くなるという欠
点があった。
(Disadvantages of Prior Art) Conventionally, this type of fluid pressure cylinder has had the following disadvantages. That is, when the cylinder is used, the reciprocating piston collides with the head cover or rod cover every time it reciprocates, resulting in noisy ff, and the shock of the collision shortens the life of the cylinder. Ta.

(発IJIの目的) この発明は前記欠点を解消するためになされたものであ
って、ピストンとそれが対向するシリンダ本体の部材と
の衝突を柔らげるため両者の間にクッション室が区画さ
れるようになされた流体圧シリンダを提供することを目
的とするものである。
(Purpose of IJI) This invention was made to solve the above-mentioned drawbacks, and in order to soften the collision between the piston and the member of the cylinder body that it faces, a cushion chamber is defined between the two. The object of the present invention is to provide a fluid pressure cylinder which is adapted to perform the following steps.

(実施例) 以下に、この発明を図面に示す実施例に2.(づいて説
明する。
(Example) Below, 2. Example of this invention is shown in the drawings. (I will explain next.

シリンダ本体lは円筒形のシリンダチューブ2を有して
おり、このシリンダチューブ2の前後端各々にロッドカ
バー4とヘッドカバー3とが嵌め市められ、前記シリン
ダチューブ2にピストン5が前後動自在に嵌められてお
り、このピストン5に設けられたロッド6がロッドカバ
ー4を11通して前方に突出している。ピストン5とロ
ッドカパー4との間のシリングチューブ2内にはスト。
The cylinder body l has a cylindrical cylinder tube 2, and a rod cover 4 and a head cover 3 are fitted into the front and rear ends of the cylinder tube 2, respectively, and a piston 5 is fitted into the cylinder tube 2 so as to be able to move freely back and forth. A rod 6 provided on this piston 5 passes through the rod cover 4 11 and projects forward. There is a strike in the silling tube 2 between the piston 5 and the rod cover 4.

パー7が前後動自在に収められ、ロッドカバー4及びス
) yパー7に流体通路8.9が形成され、これら流体
通路8.9はガイドパイプ1工によってつながれており
、ガイドパイプ11の一端部はロッドカバー4に嵌め止
められ、同他端部はス)−/バー7に、それの前後動を
許容するような状jL ′ts嵌め入れられている。そ
して、流体通路8、ガイドパイプ11及び流体通路9に
より一連の流体通路12を構成している。ストッパー7
の前後動は以下の構造によって行なわれる。即ち、スト
ッパー7に雌ねじ13が形成され、この雌ねじ13にロ
フトカバー4に回転目在に嵌められた回転体14の雄ね
し部15がねじ嵌められ、この回転体14に形成された
ロッド貫通孔16に、前記ロット6が嵌め通されており
、又この回転体140ロツトカツへ−4から突出した端
部には従動歯車17が取付けられ、この従動歯車17は
歯車18を介して駆動モータ19によって回転させられ
るようになされている。このような構造によって、駆動
モータ19を駆動させることによって歯車18を介して
従動歯車17を回転させて5回転体14、ひいては雄ね
じ部15を回転させ、そのことにより、雄ねじ部15が
ねじ嵌められている雌ねじ13を有するストッパー7を
前後動させることができる。
A par 7 is housed so as to be movable back and forth, and a fluid passage 8.9 is formed in the rod cover 4 and the par 7. These fluid passages 8.9 are connected by a guide pipe 1, and one end of the guide pipe 11 One end is fitted into the rod cover 4, and the other end is fitted into the bar 7 in such a manner as to allow it to move back and forth. The fluid passage 8, the guide pipe 11, and the fluid passage 9 constitute a series of fluid passages 12. Stopper 7
The forward and backward movement of is performed by the following structure. That is, a female thread 13 is formed on the stopper 7, and a male threaded portion 15 of a rotary body 14 fitted in the loft cover 4 in a rotational position is screwed into this female thread 13, and a rod penetrating portion formed on this rotary body 14 is screwed into the female thread 13. The rod 6 is fitted into the hole 16, and a driven gear 17 is attached to the end of the rotating body 140 protruding from the rod cut-4. It is designed so that it can be rotated by With this structure, by driving the drive motor 19, the driven gear 17 is rotated via the gear 18, thereby rotating the five-rotator 14 and, by extension, the male threaded portion 15, whereby the male threaded portion 15 is screwed. The stopper 7 having a female thread 13 can be moved back and forth.

前記ピストン5のロッドカバー4側の側部には突出部2
1が形成され、この突出部21の側周には環状溝22が
形成され、この環状溝22には環状パツキン23が嵌め
止められている。この突出部21が嵌まり込む凹所24
が、それが対向するストッパー7の部分に形成され、こ
の凹所24に突出部21が嵌まったとき1両者によって
気密又は液密のクッション室25が区画されるようにな
され、このクッション室25に通ずる流体逃がし通路2
6がストッパー7に形成され、またロッドカバー4にも
流体逃がし通路27が形成され、これら流体逃がし通路
26’、27はガイドパイプ28によってつながれてお
り、ガイドパイプ28の一端部はロッドカバ−4に脹め
止められ、同他端部はストッパー7に、それの前後動を
許容するような状態で嵌め入れられている。そして、流
体逃がし通路26.ガイドパイプ28及び流体逃がし通
路27により一連の流体逃がし通路29を構成している
。またこの流体逃がし通路29のロフト力八−4内の出
[、コ付近には、クッション室25内の流体が設定圧以
上となったときにその流体を逃がす圧力調整弁31が設
けられている。このような構造によって、ロッド6の突
出が完了するころ、即ち、突出部21が凹所24に嵌ま
ってクッション室25が区画されると、設定圧でしか開
かない圧力、if!l整弁31の働きで、クッション室
25内の圧力は高まり、ピストン5はそれがストッパー
7に衝突しようとする方向とは逆の方向に一定の力を受
け、その結果、ピストン5はスト、パー7に激しく昌た
らないようになされている。なお、ピストン5が後退す
るとき、クー、ジョン室25へは、それへの流体の流入
のみを許容する逆止弁を有する流体補給路(図示略)を
通じて流体が流入するようになされている。
A protrusion 2 is provided on the side of the piston 5 on the rod cover 4 side.
1 is formed, and an annular groove 22 is formed on the side periphery of this protrusion 21, and an annular packing 23 is fitted into this annular groove 22. A recess 24 into which this protrusion 21 fits
are formed in the opposing portions of the stopper 7, and when the protrusion 21 is fitted into the recess 24, an airtight or liquid-tight cushion chamber 25 is defined by the two. Fluid escape passage 2 leading to
6 is formed in the stopper 7, and a fluid escape passage 27 is also formed in the rod cover 4. These fluid escape passages 26' and 27 are connected by a guide pipe 28, and one end of the guide pipe 28 is connected to the rod cover 4. It is prevented from expanding, and the other end is fitted into the stopper 7 in such a manner that it is allowed to move back and forth. and fluid escape passage 26. The guide pipe 28 and the fluid escape passage 27 constitute a series of fluid escape passages 29 . Further, a pressure regulating valve 31 is provided near the outlet of the loft force 8-4 of the fluid relief passage 29 to release the fluid when the fluid in the cushion chamber 25 exceeds a set pressure. . With this structure, when the rod 6 completes protruding, that is, when the protrusion 21 fits into the recess 24 and the cushion chamber 25 is partitioned, the pressure that opens only at the set pressure, if! Due to the action of the regulating valve 31, the pressure inside the cushion chamber 25 increases, and the piston 5 receives a constant force in the direction opposite to the direction in which it is about to collide with the stopper 7. As a result, the piston 5 is struck, The par 7 is designed not to be too hard. When the piston 5 retreats, fluid flows into the cooling chamber 25 through a fluid supply path (not shown) having a check valve that only allows fluid to flow into the chamber.

前記ピストン5とヘッドカバー3との間のシリンダチュ
ーブ2内にもストッパー107が前後動自在に収められ
、このストッパーlO7を含むシリンダ木杯l後部の構
造は、前記した前部の構造とほぼ同様であるので、その
説明は省略し符号のみの説明を行なう、107はストッ
パー、108.109,112は流体通路、111はガ
イドパ・rプ、113は雌ねじ、114は回転体。
A stopper 107 is also housed in the cylinder tube 2 between the piston 5 and the head cover 3 so as to be movable back and forth, and the structure of the rear part of the cylinder cup l including this stopper lO7 is almost the same as the structure of the front part described above. 107 is a stopper, 108, 109, 112 are fluid passages, 111 is a guide pipe, 113 is a female screw, and 114 is a rotating body.

115は#ねじ部、117は従動歯+lj、118は歯
車、119は運動モータ、121は突出部、122は環
状溝、123は環状パツキン、124は凹所、125は
クッション室、126゜127.129は流体逃がし通
路、128はカイトパイプ、131は圧力調整弁である
115 is a threaded portion, 117 is a driven tooth +lj, 118 is a gear, 119 is a motion motor, 121 is a projection, 122 is an annular groove, 123 is an annular packing, 124 is a recess, 125 is a cushion chamber, 126° 127. 129 is a fluid escape passage, 128 is a kite pipe, and 131 is a pressure regulating valve.

なお、クンジョン室25.125は少なくともいずれか
一方があればよいものであり、スト、。
In addition, it is sufficient for the Kunjeon chamber 25 and 125 to have at least one of them.

パー7.107も少なくともいずれか一方があればよい
Par 7.107 also needs at least one of them.

(実施例の作用) 以下に実施例流体圧シリンダの作用について説明する。(Effect of Example) The operation of the example fluid pressure cylinder will be explained below.

ロッド6の突出位置の調整は、前方のストッパー7をl
1ij後動させることによって行なうことができ、ロン
トロの退入位Tの調整は、後方のスト;・パー107を
1iij後動させることによって行なうことができる。
To adjust the protruding position of the rod 6, press the front stopper 7.
This can be done by moving 1ij backwards, and the adjustment of the retraction position T of the fronto can be done by moving the rear stroke 107 1ij backwards.

また、り、ンヨン室25.125の作用により、ロット
6の突出・退入位置において、ピストン5かスト、バー
7.107に激しく当たることもない。
Furthermore, due to the action of the spring chamber 25.125, the piston 5 does not violently hit the bar 7.107 when the rod 6 is in its protruding and retracting positions.

(発1貝の効果) 以上の次第でこの発明によれば、ピストン5とそれが対
向するシリンダ本体の部材との間に、突出部21が喉ま
るごとによって円形のクッション室25が形成されるよ
うになされているので衝突ざを減少させることができ、
また、衝突のショックも少なくなるのでシリングの寿命
を長くすることができる。
(Advantageous Effects) As described above, according to the present invention, the circular cushion chamber 25 is formed between the piston 5 and the member of the cylinder body that it faces by the entire throat of the protrusion 21. This reduces collision damage,
In addition, the shock of collision is reduced, so the life of the shilling can be extended.

【図面の簡単な説明】[Brief explanation of drawings]

図面はこの発明の実施例を示す正面断面図である。 1・・・シリンダ本体、5・・・ピストン、21・・・
突出部、24・・・〔Lり所、25・・・クッション室
、27・・・流体逃がし通路、31・・・圧力調整弁。
The drawing is a front sectional view showing an embodiment of the invention. 1... Cylinder body, 5... Piston, 21...
Projection portion, 24... [L location, 25... Cushion chamber, 27... Fluid escape passage, 31... Pressure adjustment valve.

Claims (1)

【特許請求の範囲】[Claims] ピストン5の少なくとも一方側に突出部21が形成され
、この突出部21の嵌まり込む凹所24が、それが対向
するシリンダ本体1の部材に形成され、突出部21が凹
所24に嵌まったとき、両者によって気密又は液密のク
ッション室25が区画されるようになされ、このクッシ
ョン室25に通じる流体逃がし通路27に、クッション
室25内の流体圧力が設定圧になると開く圧力調整弁3
1が設けられている流体圧シリンダ。
A protruding part 21 is formed on at least one side of the piston 5, a recess 24 into which the protruding part 21 fits is formed in a member of the cylinder body 1 facing it, and the protruding part 21 is fitted into the recess 24. At this time, an airtight or liquid-tight cushion chamber 25 is defined by the two, and a pressure regulating valve 3 is provided in a fluid escape passage 27 leading to the cushion chamber 25, which opens when the fluid pressure in the cushion chamber 25 reaches a set pressure.
1 is provided with a fluid pressure cylinder.
JP61067718A 1986-03-25 1986-03-25 Fluid pressure cylinder Pending JPS62224706A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61067718A JPS62224706A (en) 1986-03-25 1986-03-25 Fluid pressure cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61067718A JPS62224706A (en) 1986-03-25 1986-03-25 Fluid pressure cylinder

Publications (1)

Publication Number Publication Date
JPS62224706A true JPS62224706A (en) 1987-10-02

Family

ID=13353014

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61067718A Pending JPS62224706A (en) 1986-03-25 1986-03-25 Fluid pressure cylinder

Country Status (1)

Country Link
JP (1) JPS62224706A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013182318A1 (en) * 2012-06-08 2013-12-12 Abb Technology Ag Differential cylinder arrangement for a hydro-mechanical drive for an electrical circuit breaker

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4877274A (en) * 1972-01-20 1973-10-17

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4877274A (en) * 1972-01-20 1973-10-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013182318A1 (en) * 2012-06-08 2013-12-12 Abb Technology Ag Differential cylinder arrangement for a hydro-mechanical drive for an electrical circuit breaker

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