JPS62199971A - Piston type fluid working device - Google Patents

Piston type fluid working device

Info

Publication number
JPS62199971A
JPS62199971A JP61041891A JP4189186A JPS62199971A JP S62199971 A JPS62199971 A JP S62199971A JP 61041891 A JP61041891 A JP 61041891A JP 4189186 A JP4189186 A JP 4189186A JP S62199971 A JPS62199971 A JP S62199971A
Authority
JP
Japan
Prior art keywords
piston
cylinder
opposing distance
distance
piston rods
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
Application number
JP61041891A
Other languages
Japanese (ja)
Other versions
JPH0754119B2 (en
Inventor
Ryozo Ariizumi
有泉　諒三
Masakuni Kainuma
海沼　正邦
Shoji Suda
須田　昇二
Juichi Aoki
青樹　寿一
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.)
Fujikura Composites Inc
Original Assignee
Fujikura Rubber 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 Fujikura Rubber Ltd filed Critical Fujikura Rubber Ltd
Priority to JP61041891A priority Critical patent/JPH0754119B2/en
Publication of JPS62199971A publication Critical patent/JPS62199971A/en
Publication of JPH0754119B2 publication Critical patent/JPH0754119B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/10—Characterised by the construction of the motor unit the motor being of diaphragm type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1414—Characterised by the construction of the motor unit of the straight-cylinder type with non-rotatable piston

Abstract

PURPOSE:To enable the use of a device even under a high fluid pressure, by a method wherein plural piston rods are secured to a piston at a proper opposing distance with an axis therebetween, and a press spring is situated in the opposing distance. CONSTITUTION:Plural piston rods 17 are secured at a proper distance to an annular wall 6 formed to the outer periphery of a piston 5 in a cylinder 1. A proper opposing distance 8 is formed between the piston rods 7 positioned with the axis of the piston 5 therebetween, and a press spring 10 is situated in the opposing distance 8. The opposing distance between the piston rods can be increased, a press spring is located between the piston and the cylinder to produce a high restoration force exerted on the piston, resulting in the possibility to be enoughly durable even to a high fluid pressure.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は流体を用いた種々の作業の圧力制御を行う、ピ
ストン式流体作動装置に係るものであって、大きな力の
流体を制御する場合に特に好都合なものである６ 従来の技術 従来流体を用いた種々の作業の圧力制御を行う、ピスト
ン式流体作動装置に用いるピストンは、ピストンの細心
にピストンロッドを固定しているため、流体の制御を行
なう押圧発条は、ピストンロッドの外周に１本のみが設
置され、複数本を取り付けることは、押圧発条の取り付
は空間を確保出来ないために困難なものであった。その
為、大きな力の流体を有効に制御する事ができず、種々
の支障を生じていた。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a piston-type fluid operating device that controls pressure in various operations using fluid, and is particularly suitable for controlling fluid with large force. 6. Prior Art Conventional pistons used in piston-type fluid actuators that control pressure in various operations using fluids have a piston rod meticulously fixed to the piston, making it difficult to control fluids. Only one pressure spring is installed on the outer periphery of the piston rod, and it is difficult to attach multiple pressure springs because space cannot be secured. Therefore, it was not possible to effectively control fluids with large forces, resulting in various problems.

発明が解決しようとする問題点 本発明は上述のごとき問題点を解決しようとするもめで
あって、ピストンの直径を従来と同一にしながら、複数
本の押圧発条をピストンに取り付け、大きな流体圧にも
十分対抗し、大流量の流体の制御を可能にしようとする
ものである。Problems to be Solved by the Invention The present invention is an attempt to solve the above-mentioned problems by attaching a plurality of pressure springs to the piston while keeping the diameter of the piston the same as the conventional one. The aim is to sufficiently counter the problems and to enable control of large flow rates of fluid.

問題点を解決するための手段 本発明は上述のごとき問題点を１！イ決するため、シリ
ンダー内に摺動自在に装着したピストンに、ｙ、数本の
ピストンロッドを、細心を介して適宜の対向間隔で固定
形成するとともにこの対向間隔に於いて、複数本の押圧
発条を、ピストンとシリンダー間に介装位置して成るも
のである。Means for Solving the Problems The present invention solves the above-mentioned problems! In order to achieve this, several piston rods are meticulously fixed to the piston that is slidably mounted in the cylinder at appropriate opposing intervals, and at this opposing interval, multiple pressure springs are attached. is interposed between the piston and the cylinder.

作　　用 本発明は上述のごとく、ピストンに複数本のピストンロ
ッドを、軸心を介して適宜の対向間隔で固定形成したも
のであるから、ピストンの細心にピストンロッドを固定
したものに比し、複数のピストンロッドの対向間隔を大
きなものとすることができ、この対向間隔に複数本の押
圧発条を位置する事によって、ピストンとシリンダー間
に押圧発条を複数本介装位置し、ピストンに対し大きな
復元力を生じさせる事がで終るものである。Function: As described above, the present invention has a plurality of piston rods fixed to the piston at appropriate opposing intervals through the axis, so compared to a piston in which the piston rods are meticulously fixed to the piston, The distance between the piston rods facing each other can be made large, and by locating multiple pressure springs in this distance between the piston rods, a plurality of pressure springs can be interposed between the piston and the cylinder. The end result is to generate resilience.

実施例 以下本発明の一実施例を図面に於いて説明すれば、（１
）はシリンダーで、断面コ字型の本体（２）の一端には
被覆カバー（３）を、ロックリング（４）にて連結固定
している。このシリンダー（１）内に摺動自在に装着し
た、ピストン（５）の外周に設けた環状１１！Ｊ（０）
に、適宜間隔で複数本のピストンロッド（７）を固定す
ることにより、ピストン（５）の軸心を介して位置する
ピストンロッド（７）間に、適宜の対向間隔（８）を形
成し、そしてこの対向間隔（８）に、複数本の押圧発条
（１０）を位置する。この複数本の押圧発条（１０）は
、直径の異なるコイル発条を同心に位置し、ピストン（
５）とシリンダー（１）の本体（２）の後板（１１）間
に介装位置することに上り、ピストン（５）に大きな復
元力を与えている。またピストン（５）はシリンダー（
１）の内周面に密接して摺動するものであっても良いが
、一実施例に於いては、ピストン（５）の外周面にカッ
プ状ダイヤプラム（１２）を被着している。このカップ
状ダイヤプラム（１２）は、断面フ字型とし、一端を底
板（１３）とするとともに開口端縁にビード部（１４）
を設（す、ピストン（５）の一端面（１５）ｌこ底板（
１３）を、ビス、リテイナープレート等の適宜の固定具
により固定するとともに内面を、ピストン（５）の外周
面に密接し、他端方向をローリング移動が可能な断面Ｕ
字状の折り返し部（１Ｇ）を介して、ビード部（１４）
をシリンダー（１）に固定している。このビード部（１
４）のシリンダー（１）への固定は、被覆カバー（３）
から軸方向に突出した内１’５（１７）によって、シリ
ンダー（１）に押圧することにより行うものである。こ
の内筒（１７）は少なくともビード部（１４）の固定部
内面を被覆するようシリンダー（１）に固定し、この内
Ｈ（１７）の内周面と、ピストン（５）の外周面を被覆
している、カップ状ダイヤフラム（１２）の外周面との
摺動間隔（１８）を、カップ状ダイヤフラム（１２）の
肉厚径よりも、小さなものとしている。また内筒（１７
）は上述のごとく、少なくともビード部（１４）の固定
部内面を被覆する長さに形成する必要が有るが、折り返
し部（１Ｇ）が内ｆｉ！（１７）の先端に引っ掛かって
、ピストン（５）の摺動可能鉗離を阻害するまで艮いも
のとしてはならない。Embodiment Below, one embodiment of the present invention will be described with reference to the drawings.
) is a cylinder, and a cover (3) is connected and fixed to one end of a main body (2) having a U-shaped cross section with a lock ring (4). An annular 11 provided on the outer periphery of the piston (5), which is slidably mounted within the cylinder (1)! J(0)
By fixing a plurality of piston rods (7) at appropriate intervals, an appropriate opposing interval (8) is formed between the piston rods (7) located through the axis of the piston (5), A plurality of pressing springs (10) are positioned at this opposing interval (8). The plurality of pressing springs (10) have coil springs with different diameters located concentrically, and the piston (
5) and the rear plate (11) of the main body (2) of the cylinder (1), giving a large restoring force to the piston (5). Also, the piston (5) is connected to the cylinder (
1), but in one embodiment, a cup-shaped diaphragm (12) is attached to the outer peripheral surface of the piston (5). . This cup-shaped diaphragm (12) has a F-shaped cross section, has a bottom plate (13) at one end, and has a bead portion (14) at the opening edge.
One end surface (15) of the piston (5) is installed on the bottom plate (
13) is fixed with an appropriate fixture such as a screw or a retainer plate, and the inner surface is in close contact with the outer circumferential surface of the piston (5), and the other end has a cross section U that can be moved by rolling.
Bead part (14) through the letter-shaped folded part (1G)
is fixed to the cylinder (1). This bead part (1
4) is fixed to the cylinder (1) using the covering cover (3).
This is done by pressing the cylinder (1) with the inner part 1'5 (17) which protrudes in the axial direction from the cylinder (1). This inner cylinder (17) is fixed to the cylinder (1) so as to cover at least the inner surface of the fixed part of the bead part (14), and covers the inner circumferential surface of this inner cylinder (17) and the outer circumferential surface of the piston (5). The sliding interval (18) between the cup-shaped diaphragm (12) and the outer peripheral surface thereof is made smaller than the wall thickness diameter of the cup-shaped diaphragm (12). Also, the inner cylinder (17
) needs to be formed to a length that at least covers the inner surface of the fixing part of the bead part (14), as described above, but the folded part (1G) is inside fi! (17) must not be allowed to get caught on the tip of the piston (17) and obstruct the sliding release of the piston (5).

上述のごとく形成したものであるから、ピストン（５）
の細心にピストンロッド（７）を固定したものに比し、
複数のピストンロッド（７）の対向間隔（８）を、大き
なものとすることができ、この対向間隔（８）に複数本
の押圧発条（１０）を位置する事によって、ピストン（
５）とシリンダー（１）間に押圧発条（１０）を介装位
置し、ピストン（５）に対し大きな復元力を生じさせる
事ができる。まｔこ内筒（１７）の存在により、カップ
状ダイヤフラム（１２）の折り返し部（１６）が、ビー
ド部（１４）の近辺に位置する状態に於いて、外面から
加圧力が加えられ、折り返し部（１６）に反転を生じさ
せる力が作用した場合にも、ビード部（１４）の内面に
、内筒（１７）が位置し、この内筒（１７）の内周面と
、ビストーン（５）の外周面を被覆している、カップ状
ダイヤフラム（１２）の外周面との摺動間隔（１８）を
、カップ状ダイヤプラム（１２）の肉厚径よりも、小さ
なものとしているから、ｆ２ｉ！ｌ！ｌＪＩ′ｌＶ１隔
（１８）には、カップ状ダイヤプラム（１２）の折り返
し部（１６）が噛み込まれる余地が無く、カップ状ダイ
ヤプラム（１２）の噛み込みによる、作動不能状態を生
じる事がないものである。Since it is formed as described above, the piston (5)
Compared to the one in which the piston rod (7) is meticulously fixed,
The opposing distance (8) between the plurality of piston rods (7) can be made large, and by positioning the plurality of pressing springs (10) in this opposing distance (8), the piston (
A pressure spring (10) is interposed between the piston (5) and the cylinder (1), and a large restoring force can be generated for the piston (5). Due to the presence of the inner cylinder (17), when the folded part (16) of the cup-shaped diaphragm (12) is located near the bead part (14), pressure is applied from the outer surface, causing the folded part (16) to fold back. Even when a force that causes reversal is applied to the portion (16), the inner cylinder (17) is located on the inner surface of the bead portion (14), and the inner peripheral surface of the inner cylinder (17) and the bistone (5) ) is made smaller than the wall thickness diameter of the cup-shaped diaphragm (12), so f2i ! l! There is no room for the folded portion (16) of the cup-shaped diaphragm (12) to get caught in the lJI'lV1 gap (18), and an inoperable state may occur due to the cup-shaped diaphragm (12) getting caught. It's something that doesn't exist.

発明の効果 本発明は上述のごと＜＋＋”Ｑ成したものであるから、
ピストンの細心にピストンロッドを固定したものに比し
、複数のピストン口・ンドの対向間隔を大きなものとす
ることができ、この対向間隔に複数本の押圧発条を位置
する事によって、ピストンとシリンダー間に押圧発条を
介装位置し、ピストンに対し大きな復元力を生じさせる
事ができ、大きな流体圧にも十分対抗し、大流量の流体
制御を可能にしようとするものである。Effects of the Invention Since the present invention achieves the above-mentioned results,
Compared to a piston with a carefully fixed piston rod, the distance between the piston ports and ends can be made larger, and by positioning multiple pressure springs in this distance, the piston and cylinder A pressure spring is interposed between the two pistons to generate a large restoring force to the piston, and to sufficiently withstand large fluid pressures, making it possible to control a large flow rate of fluid.

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

図面は本発明の一実施例を示すものであって、第１図は
断面図、第２図は第１図のＡ−Ａ線断面図である。 （１）・・・・シリンダー　（５）・・・・ピストン（
７）・・ピストンロンド　（８）・・・・対向間隔（１
０）・・・・押圧発条The drawings show one embodiment of the present invention, and FIG. 1 is a sectional view, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1. (1)・・・Cylinder (5)・・・Piston (
7) Piston Rondo (8) Opposing distance (1
0)... Pressure spring

Claims (2)

【特許請求の範囲】[Claims] （１）シリンダー内に摺動自在に装着したピストンに、
複数本のピストンロッドを、軸心を介して適宜の対向間
隔で固定形成するとともにこの対向間隔に於いて、複数
本の押圧発条をピストンとシリンダー間に介装位置した
ことを特徴とするピストン式流体作動装置。(1) The piston is slidably mounted inside the cylinder,
A piston type characterized in that a plurality of piston rods are fixedly formed at appropriate opposing intervals via the axis, and a plurality of pressing springs are interposed between the piston and the cylinder at this opposing interval. Fluid operated device. （２）複数本の押圧発条は、直径の異なるコイル発条を
同心に位置したものであることを特徴とする特許請求の
範囲第１項記載のピストン式流体作動装置。(2) The piston-type fluid operating device according to claim 1, wherein the plurality of pressing springs are coil springs having different diameters located concentrically.
JP61041891A 1986-02-28 1986-02-28 Piston type fluid actuating device Expired - Lifetime JPH0754119B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61041891A JPH0754119B2 (en) 1986-02-28 1986-02-28 Piston type fluid actuating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61041891A JPH0754119B2 (en) 1986-02-28 1986-02-28 Piston type fluid actuating device

Publications (2)

Publication Number Publication Date
JPS62199971A true JPS62199971A (en) 1987-09-03
JPH0754119B2 JPH0754119B2 (en) 1995-06-07

Family

ID=12620907

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61041891A Expired - Lifetime JPH0754119B2 (en) 1986-02-28 1986-02-28 Piston type fluid actuating device

Country Status (1)

Country Link
JP (1) JPH0754119B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03149369A (en) * 1990-10-01 1991-06-25 Tatsuo Okazaki Supporting structure for shaft reciprocating on fluid passage and diaphragm enclosing space between passage inner walls
US7413162B2 (en) 2006-03-31 2008-08-19 Vat Holding Ag Vacuum valve
JP2009030807A (en) * 1997-04-25 2009-02-12 Fisher Controls Internatl Llc Double-acting rotary valve actuator
CN102889267A (en) * 2012-11-16 2013-01-23 江阴市洪腾机械有限公司 Self-restoration single-action type hydraulic cylinder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50146919A (en) * 1974-05-17 1975-11-25
JPS5872469U (en) * 1981-11-10 1983-05-17 三菱自動車工業株式会社 oil pump

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50146919A (en) * 1974-05-17 1975-11-25
JPS5872469U (en) * 1981-11-10 1983-05-17 三菱自動車工業株式会社 oil pump

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03149369A (en) * 1990-10-01 1991-06-25 Tatsuo Okazaki Supporting structure for shaft reciprocating on fluid passage and diaphragm enclosing space between passage inner walls
JP2009030807A (en) * 1997-04-25 2009-02-12 Fisher Controls Internatl Llc Double-acting rotary valve actuator
US7413162B2 (en) 2006-03-31 2008-08-19 Vat Holding Ag Vacuum valve
CN102889267A (en) * 2012-11-16 2013-01-23 江阴市洪腾机械有限公司 Self-restoration single-action type hydraulic cylinder

Also Published As

Publication number Publication date
JPH0754119B2 (en) 1995-06-07

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