JPH01112040A - Cylinder - Google Patents

Cylinder

Info

Publication number
JPH01112040A
JPH01112040A JP62270026A JP27002687A JPH01112040A JP H01112040 A JPH01112040 A JP H01112040A JP 62270026 A JP62270026 A JP 62270026A JP 27002687 A JP27002687 A JP 27002687A JP H01112040 A JPH01112040 A JP H01112040A
Authority
JP
Japan
Prior art keywords
rod
oil chamber
chamber
pressure
check valve
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
JP62270026A
Other languages
Japanese (ja)
Other versions
JP2798922B2 (en
Inventor
Mitsuhiro Kashima
加島　光博
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.)
KYB Corp
Original Assignee
Kayaba Industry 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 Kayaba Industry Co Ltd filed Critical Kayaba Industry Co Ltd
Priority to JP62270026A priority Critical patent/JP2798922B2/en
Publication of JPH01112040A publication Critical patent/JPH01112040A/en
Application granted granted Critical
Publication of JP2798922B2 publication Critical patent/JP2798922B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/56—Means for adjusting the length of, or for locking, the spring or damper, e.g. at the end of the stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/154—Fluid spring with an accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/40—Constructional features of dampers and/or springs
    • B60G2206/42—Springs
    • B60G2206/422—Accumulators for hydropneumatic springs

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

PURPOSE:To be well suitable for a positioning and support member, by a method wherein the pressure accumulating chamber of an accumulator is connected to an oil chamber on the contraction side of a rod through a first check valve and to an oil chamber on the expansion side of a rod through a second check valve. CONSTITUTION:Since, when first and second check valves 10 and 12 are opened by means of a lever 24, a pressure accumulating chamber 6 is communicated to an oil chamber 11 on the contraction side of a rod and an oil chamber 13 on the expansion side of a rod, a rod 3 is moved to the expansion side or the contraction side according to an external force applied. In this case, according to the difference in a collection area of a piston 2, the oil chamber of the pressure accumulating chamber 6 is exerted as an assist force on the expansion side of a rod. With the first and second check valves 10 and 12 closed by means of the lever 24 after the rod 3 is moved to an arbitrary position, the oil chamber 11 on the contraction side of a rod and the oil chamber 13 on the expansion side of a rod are shut off and brought into a locked state, and thereby the rod 3 is secured to an arbitrary position.

Description

【発明の詳細な説明】 （産業上の利用分野） この発明は、各種機器を位置決めおよび支持する部材と
して用いられるシリンダに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cylinder used as a member for positioning and supporting various types of equipment.

（従来の技術） 各種機器を位置決め支持するシリンダとして、例えばボ
ート用船外機のチルトダンパ等がある。(Prior Art) Examples of cylinders that position and support various types of equipment include tilt dampers for outboard motors for boats.

これは、シリンダ内のロッド伸側の油室と縮側の油室と
の間にオリアイスとりリーフ弁を設けており、船外機が
障害物等に衝突したとかに、リリーフ弁を介しで縮側の
油を伸側に逃がしてロッドを自由にすることで、船外機
を水面から浮上させるものである。An oil pressure relief valve is installed between the oil chamber on the rod extension side and the oil chamber on the contraction side in the cylinder, and when the outboard motor collides with an obstacle, the oil pressure is reduced via the relief valve. By letting oil from the side escape to the extension side and freeing the rod, the outboard motor rises above the water surface.

また、船外機を推進位置あるいは推進位置から浮上位置
にセットするときは、船外機を下方あるいは上方に押す
と、両油室の油がオリアイスを介して出入りするため、
上記所定の位置に容易にセットされるものである（特公
昭５９−５４８０号公報参照）。Also, when setting the outboard motor to the propulsion position or from the propulsion position to the floating position, pushing the outboard motor downward or upward causes the oil in both oil chambers to flow in and out through the oriice.
It can be easily set in the above-mentioned predetermined position (see Japanese Patent Publication No. 59-5480).

（発明が解決しようとする問題、α） しかしながら、このような従来例にあっては、船外機を
推進位置、と浮上位置にセットすることはできるが、シ
リンダの両油室がオリフィスを介しで連通されているた
め、上記以外の位置にセットすることはできず、したが
つて水ｖｌ″！Ｐに対応させて船外機を所望の角度にセ
ットすることは無理である、また、従来例を船外機以外
のものに適用する場合、中間の任意の位置に保持したい
機器にあっては、適用は不可能である。(Problem to be solved by the invention, α) However, in such a conventional example, although the outboard motor can be set in the propulsion position and the floating position, both oil chambers of the cylinder are connected through the orifice. It is impossible to set the outboard motor in a position other than the above because it is connected to the When applying the example to equipment other than outboard motors, it is impossible to apply the example to equipment that should be held at any intermediate position.

この発明は、このような問題点を解決することを目的と
している。This invention aims to solve these problems.

（問題点を解決するための手ｒｉ） この発明は、シリング本体に摺動自由に収装したピスト
ンにロッドを連結し、かつピストンを介してロッド伸側
油室と縮側油室とを画成する一方、作動油を加圧するア
キュームレータを備え、アキニームレータの蓄圧室を第
１のチェック弁を介してロッド縮側の油室と、第２のチ
ェック弁を介してロッド伸側の油室に接続し、第１、ｆ
ｊＳ２のチェック弁を強制的に開閉するレバーを設ける
と共に、ロッド縮側の油室と前記蓄圧室との間にすＩノ
ー７弁を介装する。(Measures to solve the problem) This invention connects a rod to a piston that is slidably housed in a cylinder body, and defines an oil chamber on the rod extension side and an oil chamber on the contraction side via the piston. On the other hand, it is equipped with an accumulator that pressurizes hydraulic oil, and the pressure accumulation chamber of the akinimulator is connected to the oil chamber on the rod contraction side via the first check valve, and the oil chamber on the rod expansion side via the second check valve. connected to the first, f
A lever for forcibly opening and closing the check valve of jS2 is provided, and an I-no-7 valve is interposed between the oil chamber on the rod compression side and the pressure accumulation chamber.

（作用） レバーにより第１．　ＰｌｆＪ２のチェック弁を開くと
、蓄圧室とロッド縮側の油室とロッド伸側の油室が連通
するため、ロッドは加えられる外力に応じて伸側あるい
は縮側に動く、このとき、ピストン受圧面積差に応じて
蓄圧室の油室がロフト伸側にアシスト力として作用する
。(Function) The lever moves the 1st. When the check valve of PlfJ2 is opened, the pressure accumulation chamber, the oil chamber on the rod contraction side, and the oil chamber on the rod expansion side communicate with each other, so the rod moves to the expansion side or contraction side depending on the external force applied.At this time, the piston receiving pressure The oil chamber of the pressure accumulation chamber acts as an assist force on the loft expansion side according to the area difference.

そして、ロフトを任意の位置に動かした後、レバーによ
り第１、第２のチェック弁を閉じると、ロフト縮体の油
室とロッド伸側の油室が遮断してロック状態となるため
、ロッドはその任意の位置で固定される。After moving the loft to a desired position, when the first and second check valves are closed using the lever, the oil chamber of the loft contraction body and the oil chamber on the rod extension side are cut off and the rod is locked. is fixed at its arbitrary position.

また、ロッドを固定した状態で、ロッド伸側にオーバー
ロード（衝撃力）が加わると、圧縮されるロッド縮側の
油室の作動油がリリーフ弁を介して蓄圧室へ入り、これ
により伸側で減液作用が得られる。なお、この場合Ｐｔ
５２のチェック弁の開弁圧の設定値により衝７カに応じ
てロッド伸側油室への作動油の流入が制御され、ロッド
の伸び出し時に伸側油室に発生する負圧力でピストンが
引き戻され、オーバーロード解除後のロッドの自動復帰
作用が得られる。In addition, when an overload (impact force) is applied to the rod extension side with the rod fixed, the hydraulic oil in the oil chamber on the rod contraction side that is compressed enters the pressure accumulation chamber via the relief valve, and this causes A liquid-reducing effect can be obtained. In this case, Pt
The setting value of the opening pressure of the check valve 52 controls the flow of hydraulic oil into the oil chamber on the extension side of the rod according to the force, and the negative pressure generated in the oil chamber on the extension side when the rod begins to extend causes the piston to move. When pulled back, the rod automatically returns after the overload is released.

（実施例） ｆｊＳｌ図、Ｐｔ５２図は本発明の実施例を示すもので
、１はシリング本体、２はシリング本体１内を摺動自由
なピストン、３はピストン２に連結されたパイプ状のロ
ッドである。(Example) Fig. fjSl and Fig. Pt52 show examples of the present invention, in which 1 is a silling body, 2 is a piston that can freely slide inside the syringe body 1, and 3 is a pipe-shaped rod connected to the piston 2. It is.

ロッド３は、内部に摺動自由に収装した自由ピストン４
によりガス室５と蓄圧室６が隔成され、ガス室５には自
由ピストン４を付勢するスプリング７が介装されると共
に、注入バルブ８を介して所定のガス圧が充填され、ア
キュームレータ９が形成される。The rod 3 has a free piston 4 housed therein so as to be able to slide freely.
The gas chamber 5 and the pressure accumulation chamber 6 are separated by the gas chamber 5, and the gas chamber 5 is interposed with a spring 7 that biases the free piston 4, and is filled with a predetermined gas pressure via the injection valve 8, and the accumulator 9 is filled with a predetermined gas pressure. is formed.

アキュームレータ９の蓄圧室６は、ピストン２の内部に
介装した第１のチェックか１０を介して、ピストン２に
より隔成されたロッドｆ！側の油室１１、および同じく
ピストン２の内部に介装した第２のチェック弁１２を介
して、ピストン２により隔成されたロッド伸側の油室１
３に接続される。The pressure storage chamber 6 of the accumulator 9 is connected to a rod f! separated by the piston 2 via a first check valve 10 interposed inside the piston 2. The oil chamber 1 on the rod extension side separated from the piston 2 via the side oil chamber 11 and the second check valve 12 also installed inside the piston 2.
Connected to 3.

第１、第２のチェック弁１０．１２は、ピストン２の半
径方向に配設され、ピストン２の中央部に設けた穴状の
通路１４を介し蓄圧室６側に弁シート面が形成されると
共に、閉弁状態でそれぞれ弁先端の球状部１５．１６が
前記通路１４に突出するように形成される。The first and second check valves 10.12 are arranged in the radial direction of the piston 2, and have valve seat surfaces formed on the pressure accumulation chamber 6 side through a hole-shaped passage 14 provided in the center of the piston 2. In addition, spherical portions 15 and 16 at the tips of the valves are formed so as to protrude into the passage 14 in the closed state.

そして、ロッド３の先端部１７および自由ピストン４を
貫通して前記ピストン２の通路１４に達するバー１８が
配設される。バー１８は通路１４への挿入部の所定の外
周位置にテーパ状のす７ト部１９，２０が形成され、先
端部に介装したスプリング２１に抗して油室１３側に押
されると、す７ト部１９，２０が第１、第２のチェック
弁１０゜１２の球状ｇ１５．１６を押動し、ｆｊＳｌ、
ｆｊＳ２のチェック弁１０，１２を開く。A bar 18 is provided which passes through the tip 17 of the rod 3 and the free piston 4 and reaches the passage 14 of the piston 2. The bar 18 has tapered bottom portions 19 and 20 formed at predetermined outer peripheral positions of the insertion portion into the passage 14, and when pushed toward the oil chamber 13 against a spring 21 interposed at the tip, The g7 parts 19, 20 push the spherical g15.16 of the first and second check valves 10°12, and fjSl,
Open check valves 10 and 12 of fjS2.

このバー１８の後端部２２はロッド３の先端部１７から
いくらか突出するように形成され、これに対向して握り
部２３を設けたレバー２４が配設される。レバー２４は
一端をビン２５に上り回動自由に支持されており、シリ
ング本体１側に引くと、後端部２２を介してロッド３が
油室１３側に押動されるようになっている。The rear end 22 of this bar 18 is formed to project somewhat from the tip 17 of the rod 3, and a lever 24 provided with a grip 23 is disposed opposite thereto. The lever 24 has one end mounted on a bottle 25 and is freely rotatably supported, and when pulled toward the shilling body 1, the rod 3 is pushed toward the oil chamber 13 via the rear end 22. .

一方、ロッド縮側の油室１１と蓄圧室６との間には、第
１、ＰｊＳ２のチェック弁１０．１２と同様にピストン
２の内部にリリーフ弁２６が介装される、このリリーフ
弁２６は、ロッド綿調の油室１１の圧力が蓄圧室６側の
圧力よりも高くなると閏いて、ロッド綿調の油圧をピス
トン２０通路１４を経て逃がす。On the other hand, between the oil chamber 11 on the rod compression side and the pressure accumulation chamber 6, a relief valve 26 is interposed inside the piston 2, similar to the check valve 10.12 of the first PjS2. When the pressure in the rod-like oil chamber 11 becomes higher than the pressure on the pressure accumulation chamber 6 side, the rod-like oil pressure is released through the piston 20 passage 14.

なお、２７〜３４はシールである。Note that 27 to 34 are seals.

このような構成において、ｆｔ５１図の状態からレバー
２４をシリング本体ｉｌｌに引くと、パー１８が押され
て第１、第２のチェック弁１０．１２が開き、アキュー
ムレータ９の蓄圧室６とロッド綿調の油圧１１とロッド
伸側の油圧１３が連通状態となる。In such a configuration, when the lever 24 is pulled toward the sill body ill from the state shown in Fig. ft51, the par 18 is pushed and the first and second check valves 10. The hydraulic pressure 11 on the rod extension side and the hydraulic pressure 13 on the rod extension side are in communication.

ピストン２の受圧面積は、ロッド伸側の油室１３の方が
ロッド綿調の油室１１よりもロッド３の断面積に相当す
る分だけ大きいため、蓄圧室６の圧力に応じてピストン
２はロッド３の伸び出し方向に付勢される。The pressure-receiving area of the piston 2 is larger in the oil chamber 13 on the rod extension side than in the rod-like oil chamber 11 by an amount corresponding to the cross-sectional area of the rod 3. The rod 3 is biased in the extending direction.

このため、ロッド３とシリング本体１との間に加わる外
力がピストン２の付勢力よりも大きいときはロッド３は
縮側に動さ、逆に小さいときは伸側に動く０例えば船外
機のチルト−ダンパとして用いた場合には、その圧力に
上り船外機を持上げる方向のアシスト力を得る。Therefore, when the external force applied between the rod 3 and the cylinder body 1 is larger than the biasing force of the piston 2, the rod 3 moves toward the contraction side, and when it is smaller, it moves toward the expansion side. When used as a tilt damper, the pressure increases to provide an assisting force in the direction of lifting the outboard motor.

そして、ロッド３を任意の位置に動がした後、レバー２
４を元に戻してバー１８を開放すると、ｍｌ、第２のチ
ェック弁１０，１２が閑じる。Then, after moving the rod 3 to an arbitrary position, lever 2
4 and open the bar 18, the second check valves 10 and 12 become open.

このため、蓄圧室６と各油室１１，１３の連通が遮断さ
れ、ロック状態となるため、ロッド３はその任意の位置
で固定される。したがって、船外機に用いた場合、船外
機を所望の角度に保持することが可能であり、また船外
機以外の各機器に用いた場合に、各機器を任意の位置に
保持することが可能である。For this reason, communication between the pressure accumulation chamber 6 and each oil chamber 11, 13 is cut off, resulting in a locked state, so that the rod 3 is fixed at an arbitrary position. Therefore, when used for an outboard motor, it is possible to hold the outboard motor at a desired angle, and when used for equipment other than an outboard motor, it is possible to hold each equipment at an arbitrary position. is possible.

一方、ロッド３を固定した状！！！（使用状態）にて、
ロッド伸側に衝撃力（オーバーミード）が加わると、ロ
ッド綿調の油室１１の圧力が上昇し、リリーフ弁２６が
聞く。On the other hand, rod 3 is fixed! ! ! (in use condition)
When an impact force (overmead) is applied to the rod expansion side, the pressure in the oil chamber 11 of the rod cotton rises, and the relief valve 26 hears it.

このため、ロッド綿調の油室１１の作動油が蓄圧室６側
に入り、ガス室５を圧縮しながらロッド３が伸側に動き
、これにより、衝撃が吸収、緩和される。Therefore, the hydraulic oil in the rod-shaped oil chamber 11 enters the pressure accumulation chamber 6 side, and the rod 3 moves toward the expansion side while compressing the gas chamber 5, thereby absorbing and mitigating the impact.

ところで、このオーバーロードリリースの場合第２のチ
ェック弁１２の開弁圧の選定に応じて以下のような作動
特性を得ることができる。Incidentally, in the case of this overload release, the following operating characteristics can be obtained depending on the selection of the opening pressure of the second check valve 12.

例えば、第３図に示すように第２のチェック弁１２の開
弁圧をアキュームレータ９の蓄圧室６の最高圧（ガス室
５が最圧縮状態での圧力）以上のａに設定しでおけば、
オーバーロード時にｔＪＳ２のチェック弁１２は閉じた
ままとなり、ピストン２の移動により伸側の油室１３は
負圧化する。このため衝撃が吸収されると、負圧により
ピストン２が引慇戻され、ロッド綿調の油室１１がらリ
リーフ弁２６を介して蓄圧室６に入った作動油は、第１
のチェック弁１０を押開いて再び拡大するロッド綿調の
油室１１へ戻るようになり、これによりロッド３は元の
位置に復帰する。即ち、自動復帰作用が確保される。For example, as shown in FIG. 3, if the opening pressure of the second check valve 12 is set to a higher than the maximum pressure of the pressure storage chamber 6 of the accumulator 9 (the pressure when the gas chamber 5 is in the most compressed state), ,
At the time of overload, the check valve 12 of tJS2 remains closed, and the movement of the piston 2 causes the oil chamber 13 on the expansion side to have negative pressure. Therefore, when the shock is absorbed, the piston 2 is pulled back by the negative pressure, and the hydraulic oil that has entered the pressure accumulation chamber 6 from the rod-shaped oil chamber 11 via the relief valve 26 is transferred to the first
The check valve 10 is pushed open to return to the expanded rod-like oil chamber 11, and the rod 3 returns to its original position. That is, an automatic return action is ensured.

また、第２のチェック弁１２の開弁圧を蓄圧室６の最高
圧よりも低くし、第３図のようにガス室５のがス封入圧
に応じてｂに設定°すれば、蓄圧室６の圧力が５以上（
斜線領域）では第２のチェック弁１２が聞き、ｂ以下で
は第２のチェック弁１２は閉じる。チェック弁１２が開
くと、蓄圧室６の作動油が伸側油室１３に流入するため
、ピストン２が移動しても伸側油室１３は負圧化せず、
オーバーロード時の衝撃を吸収した後にピストン２は元
に戻らない、したがって、この場合〃ス封入圧Ｐ　ｌ−
Ｐ　２−Ｐ　ａｈロッド３の位置１．ＩＦ、Ｉｌｌに応
じて、所定の範囲でロッド３を自動復帰させることがで
きる０例えば、〃ス封入圧がＰｔで、ロッド３の位置が
Ｉであれば、リリースストロークがＹの範囲では自動復
帰しないが、Ｘの範囲に入ると第２のチェック弁１２が
閉じるためＹの範囲まで自動復帰する。In addition, if the opening pressure of the second check valve 12 is lower than the maximum pressure of the pressure accumulator 6 and the gas chamber 5 is set to b according to the gas filling pressure as shown in Fig. 3, the pressure accumulator 6 pressure is 5 or more (
In the shaded area), the second check valve 12 is activated, and below b, the second check valve 12 is closed. When the check valve 12 opens, the hydraulic oil in the pressure accumulation chamber 6 flows into the expansion side oil chamber 13, so even if the piston 2 moves, the expansion side oil chamber 13 does not become negative pressure.
The piston 2 does not return to its original state after absorbing the shock during overload, so in this case the gas filling pressure P l-
P 2-P ah rod 3 position 1. The rod 3 can be automatically returned within a predetermined range according to IF and Ill. For example, if the gas sealing pressure is Pt and the rod 3 is in position I, the rod 3 will automatically return when the release stroke is in the Y range. However, when it enters the X range, the second check valve 12 closes, so it automatically returns to the Y range.

また、第２のチェック弁１２の開弁圧を蓄圧室６の最低
圧以下（〃ス封入圧に対応する）のＣに設定すれば、も
ちろ、ん自動復帰作用は生じない。Furthermore, if the opening pressure of the second check valve 12 is set to C, which is below the lowest pressure of the pressure accumulating chamber 6 (corresponding to the gas sealing pressure), of course no automatic return action will occur.

なお、７ンロ一ドリリース時の荷重特性は、第２のチェ
ック弁１２の開弁圧に応じでＰｔ５４図のようになる。In addition, the load characteristic at the time of 7 load release is as shown in Pt54 diagram according to the opening pressure of the second check valve 12.

第５図は本発明の他の実施例を示すもので、７キューム
レータ９お上り第１．ｔｔＳ２のチェック弁１０，１２
、リリーフ弁２６をシリング側と別体に設けたものであ
る。FIG. 5 shows another embodiment of the present invention, in which seven cuumulators 9 and 1. ttS2 check valves 10, 12
, a relief valve 26 is provided separately from the Schilling side.

この場合、答弁１０，１２，２６は７！Ｉｔニームレー
タ９の端部に配設され、対応する弁を介しアキニームレ
ータ９の蓄圧室６は配管３５．３６によりシリング本体
１の各油室１１，１３と接続される。In this case, answers 10, 12, and 26 are 7! It is arranged at the end of the Itneemulator 9, and the pressure accumulator 6 of the Itneemulator 9 is connected to each oil chamber 11, 13 of the Schilling body 1 by a pipe 35, 36 via a corresponding valve.

また、アキュームレータ９の端部には、ｔｔＳｌ。Further, at the end of the accumulator 9, there is a ttSl.

第２のチェックか１０．１２の先端の球状部１５゜１６
に対応して、カム紬３７が回動自由に介装され、カム紬
３７に取付けたレバー３８を介してカム紬３７を所定の
位ｒａまで回すと、その９７１部３９により球状部１５
．１６が押され、第１．第２のチェック弁１０．１２が
開弁するようになっている。Second check or 10.12 spherical part at the tip 15°16
Correspondingly, a cam pongee 37 is rotatably installed, and when the cam pongee 37 is rotated to a predetermined position ra via a lever 38 attached to the cam pongee 37, the 971 portion 39 engages the spherical portion 15.
．． 16 is pressed and the 1st. The second check valve 10.12 is adapted to open.

これによれば、シリング側の構造が簡略化すると共に、
通常のシリングに適用することが可能であり、高い実用
性が得られる。According to this, the structure on the Schilling side is simplified, and
It can be applied to ordinary shillings and has high practicality.

（発明の効果） 以上のように本発明によれば、アキュームレータの蓄圧
室を第１のチェック弁を介してロッド縮側の油室と、第
２のチェック弁を介してロッド伸側の油室に接続し、第
１、ｆｊ＆２のチェック弁を強制的にｒｆｆｇ閉するレ
バーを設けると共に、ロフト縮側の油室と前記蓄圧室と
の間にリリーフ弁を介装したので、グンパとして優れ、
位置決めおよび支持部材として好適なシリングを実現で
きる。(Effects of the Invention) As described above, according to the present invention, the pressure accumulation chamber of the accumulator is connected to the oil chamber on the rod contraction side via the first check valve, and to the oil chamber on the rod extension side via the second check valve. In addition to providing a lever that connects to the RFFG and forcibly closes the first, fj & second check valves, and interposing a relief valve between the oil chamber on the loft contraction side and the pressure accumulation chamber, it is excellent as a gunpa,
A sill suitable as a positioning and supporting member can be realized.

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

第１図、第２図は本発明の実施例を示す断面図とその部
分断面図、第３図は第２のチェック弁の開弁圧を変えた
ときの作動説明に用いる特性図、第４図は７ンロ一ドリ
リース特性図、第５図は本発明の他の実施例を示す断面
図である。 １・・・シリング本体、２・・・ピストン、３・・・ロ
ッド、６・・・蓄圧室、９・・・アキュームレータ、１
０・・・第１のチェック弁、１１・・・ロッド縮側の油
室、１２・・・第２のチェック弁、１３・・・ロッド伸
側の油室、２４・・・レバー、２６・・・＋）リーフ弁
、３８・・・レバー。1 and 2 are a sectional view and a partial sectional view showing an embodiment of the present invention, FIG. 3 is a characteristic diagram used to explain the operation when the opening pressure of the second check valve is changed, and FIG. FIG. 5 is a 7-load release characteristic diagram, and FIG. 5 is a sectional view showing another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Schilling body, 2... Piston, 3... Rod, 6... Pressure accumulation chamber, 9... Accumulator, 1
0... First check valve, 11... Oil chamber on the rod contraction side, 12... Second check valve, 13... Oil chamber on the rod expansion side, 24... Lever, 26... ...+) leaf valve, 38... lever.

Claims (1)

【特許請求の範囲】[Claims] シリンダ本体に摺動自由に収装したピストンにロッドを
連結し、かつピストンを介してロッド伸側油室と縮側油
室とを画成する一方、作動油を加圧するアキュームレー
タを備え、アキュームレータの蓄圧室を第１のチェック
弁を介してロッド縮側の油室と、第２のチェック弁を介
してロッド伸側の油室に接続し、第１、第２のチェック
弁を強制的に開閉するレバーを設けると共に、ロッド縮
側の油室と前記蓄圧室との間にリリーフ弁を介装したこ
とを特徴とするシリンダ。A rod is connected to a piston that is slidably housed in the cylinder body, and defines an oil chamber on the rod extension side and an oil chamber on the contraction side via the piston, and is equipped with an accumulator for pressurizing hydraulic oil. The pressure accumulation chamber is connected to the oil chamber on the rod contraction side via the first check valve and to the oil chamber on the rod extension side via the second check valve, and the first and second check valves are forcibly opened and closed. What is claimed is: 1. A cylinder characterized in that a lever is provided to control the pressure, and a relief valve is interposed between an oil chamber on the rod compression side and the pressure accumulation chamber.
JP62270026A 1987-10-26 1987-10-26 Cylinder Expired - Lifetime JP2798922B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62270026A JP2798922B2 (en) 1987-10-26 1987-10-26 Cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62270026A JP2798922B2 (en) 1987-10-26 1987-10-26 Cylinder

Publications (2)

Publication Number Publication Date
JPH01112040A true JPH01112040A (en) 1989-04-28
JP2798922B2 JP2798922B2 (en) 1998-09-17

Family

ID=17480500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62270026A Expired - Lifetime JP2798922B2 (en) 1987-10-26 1987-10-26 Cylinder

Country Status (1)

Country Link
JP (1) JP2798922B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4929765A (en) * 1987-11-27 1990-05-29 Basf Aktiengesellschaft Preparation of phenylacetaldehydes
US7784392B1 (en) 2006-10-12 2010-08-31 HDM Hydraulics, LLC Hydraulic locking cylinder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57101142A (en) * 1980-10-28 1982-06-23 Stabilus Gmbh Gas spring with hydraulic lock device
JPS57127136A (en) * 1981-01-29 1982-08-07 Tokico Ltd Closed type cylinder device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57101142A (en) * 1980-10-28 1982-06-23 Stabilus Gmbh Gas spring with hydraulic lock device
JPS57127136A (en) * 1981-01-29 1982-08-07 Tokico Ltd Closed type cylinder device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4929765A (en) * 1987-11-27 1990-05-29 Basf Aktiengesellschaft Preparation of phenylacetaldehydes
US7784392B1 (en) 2006-10-12 2010-08-31 HDM Hydraulics, LLC Hydraulic locking cylinder

Also Published As

Publication number Publication date
JP2798922B2 (en) 1998-09-17

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