JP3159227U - Hydraulic cylinder - Google Patents

Hydraulic cylinder Download PDF

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JP3159227U
JP3159227U JP2010001044U JP2010001044U JP3159227U JP 3159227 U JP3159227 U JP 3159227U JP 2010001044 U JP2010001044 U JP 2010001044U JP 2010001044 U JP2010001044 U JP 2010001044U JP 3159227 U JP3159227 U JP 3159227U
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piston
cover
convex portion
cylinder
concave
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宏二郎 東良
宏二郎 東良
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Shimadzu Corp
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Abstract

【課題】凸凹部の損傷や焼付きを防止し、衝撃緩和の効果が大きい液圧シリンダを提供する。【解決手段】両端にカバーを備えたシリンダと、一方側カバーを貫通し先端にピストン部を備えシリンダを往復動する作動軸と、作動軸側と反対側のピストン端面またはカバー端面に嵌合可能な凹部または凸部を設け、凹部と凸部の嵌合でクッション機構を備える。凹部または凸部を備えた部材をカバーまたはピストンと別部材で構成し、凹部または凸部を備えた部材がピストンまたはカバーの軸芯に対し軸直角方向および軸方向に自在に移動可能である。【選択図】図１Disclosed is a hydraulic cylinder that prevents damage and seizure of a convex / concave portion and has a large impact relaxation effect. A cylinder with a cover at both ends, an operating shaft that penetrates one side cover and has a piston at the tip and reciprocates the cylinder, and can be fitted to the piston end surface or cover end surface opposite to the operating shaft side A concave or convex portion is provided, and a cushion mechanism is provided by fitting the concave and convex portions. The member provided with the concave portion or the convex portion is constituted by a member separate from the cover or the piston, and the member provided with the concave portion or the convex portion is freely movable in the direction perpendicular to the axis and in the axial direction with respect to the axis of the piston or the cover. [Selection] Figure 1

Description

本考案は液圧シリンダのストロークエンドにおけるピストンの移動速度を減速するクッション機構を備えた液圧シリンダに関する。   The present invention relates to a hydraulic cylinder provided with a cushion mechanism that decelerates the moving speed of a piston at the stroke end of the hydraulic cylinder.

従来、シリンダ部材またはピストン部材のいずれかに取り付けられた移動対象物の慣性によるシリンダのストロークエンドにおける衝撃を緩和する方法として、液圧シリンダを軸方向に移動するピストン部材のボトム側端部に軸方向に凹形プランジャ室を設け、クッションプランジャを軸方向に進退自在に挿入するとともに、前記シリンダの作動液室に対応するシリンダボトムに、前記クッションプランジャの軸径よりやや大径の軸方向の挿入穴を開口して、その挿入穴に入り込んだ前記クッションプランジャの先端部分が着座するシート部をその挿入穴の軸方向に連続した通路との間に設けるとともに、前記プランジャ室と作動液室とを小径の連通孔を介して互いに連通するとともに、前記クッションプランジャの長手方向を貫通する通路にオリフィスを設けることによりピストンの移動終端における衝撃を緩和する方法が採用されている（特許文献１参照）。   Conventionally, as a method of reducing the impact at the stroke end of the cylinder due to the inertia of the moving object attached to either the cylinder member or the piston member, a shaft is attached to the bottom end of the piston member that moves the hydraulic cylinder in the axial direction. A concave plunger chamber is provided in the direction, and the cushion plunger is inserted so as to be movable back and forth in the axial direction, and inserted in the cylinder bottom corresponding to the hydraulic fluid chamber of the cylinder in an axial direction slightly larger in diameter than the shaft diameter of the cushion plunger. A hole is provided, and a seat portion on which the tip end portion of the cushion plunger that has entered the insertion hole is seated is provided between the passage continuing in the axial direction of the insertion hole, and the plunger chamber and the hydraulic fluid chamber are provided. A passage that communicates with each other via a small-diameter communication hole and that passes through the longitudinal direction of the cushion plunger. Method of alleviating the impact of the moving end of the piston is employed by providing an orifice (see Patent Document 1).

また図６に示すとおり、両端にヘッドカバー４１とロッドカバー４２を備えたシリンダ（円筒体）４３を往復動する作動軸４４に固定された気密摺動するピストン４５を設け前記ヘッドカバー４１とピストン４５とで構成される作動液室Ｋに対応する前記ピストン４５の端面に軸方向の凸部４６を設け、相対する前記作動液室Ｋに対応する前記ヘッドカバー４１の端面に前記凸部４６に嵌合する凹部４７を設ける方法が採用されている。すなわち凸部４６を凹部４７に嵌合させることにより、凸部４６と凹部４７との隙間の絞り効果によって前記作動液室Ｋの圧力が高くなりピストン４５の移動速度を減速してストロークエンドにおける衝撃を緩和する方式である。   Further, as shown in FIG. 6, an airtight sliding piston 45 fixed to an operating shaft 44 that reciprocates a cylinder (cylindrical body) 43 having a head cover 41 and a rod cover 42 at both ends is provided. A convex portion 46 in the axial direction is provided on the end surface of the piston 45 corresponding to the hydraulic fluid chamber K constituted by the above, and the convex portion 46 is fitted to the end surface of the head cover 41 corresponding to the opposing hydraulic fluid chamber K. A method of providing the recess 47 is employed. That is, by fitting the convex portion 46 to the concave portion 47, the pressure of the hydraulic fluid chamber K is increased by the narrowing effect of the gap between the convex portion 46 and the concave portion 47, and the moving speed of the piston 45 is decelerated, and the impact at the stroke end. It is a method to relieve.

実開昭６３−１１２６０２号公報Japanese Utility Model Publication No. 63-112602

上記に詳述した従来の液圧シリンダのクッション機構では、クッションによる衝撃緩和の効果を大きくするためにピストンに設けた軸方向の凸部と相対する凹部との隙間を小さくする方式が用いられている。しかし隙間を小さくすれば凹部と凸部の芯ズレにより凸部の外周が凹部の入口部に干渉して嵌合できない場合や強引な嵌合により接触部が焼付くなどの損傷を生じる。また隙間を大きくすれば衝撃緩和の効果が小さくなりピストンのカバー側への衝突による騒音や部品の破損を生じる問題があった。   In the conventional hydraulic cylinder cushion mechanism described in detail above, a method of reducing the gap between the convex portion in the axial direction provided on the piston and the concave portion opposed to the piston is used in order to increase the impact mitigating effect by the cushion. Yes. However, if the gap is reduced, damage may occur if the outer periphery of the convex portion interferes with the inlet portion of the concave portion due to the misalignment between the concave portion and the convex portion, or the contact portion seizes due to forcible fitting. Further, if the gap is increased, the impact mitigating effect is reduced, and there is a problem that noise and damage to parts are caused due to the collision of the piston with the cover side.

両端にカバーを備えたシリンダと、一方側カバーを貫通し先端にピストン部を備えて前記シリンダを往復動する作動軸と、前記作動軸側と反対側の前記ピストン端面または前記カバー端面に互いに嵌合可能な凹部または凸部を設け、前記凹部と前記凸部の嵌合にてクッション機構を備えた液圧シリンダにおいて、前記凹部または前記凸部を備えた部材を前記ピストンまたは前記カバーと別部材にて構成し、さらに前記凹部または前記凸部を備えた部材が前記ピストンまたは前記カバーの軸芯に対し軸直角方向に自在に移動可能に固定する固定部材を設けた構成とするものである。前記凹部または前記凸部が相手側の軸芯に倣って移動し嵌合時の損傷を回避できる。   A cylinder with covers at both ends, an operating shaft that passes through one side cover and has a piston at the tip and reciprocates the cylinder, and the piston end surface or the cover end surface opposite to the operating shaft side In a hydraulic cylinder provided with a concave or convex portion that can be mated, and provided with a cushion mechanism by fitting the concave portion and the convex portion, the member having the concave portion or the convex portion is separated from the piston or the cover. Further, a fixing member is provided for fixing the concave portion or the member having the convex portion so as to be freely movable in a direction perpendicular to the axis with respect to the axis of the piston or the cover. The concave portion or the convex portion moves following the counterpart axis and damage during fitting can be avoided.

本考案により、凹部と凸部の焼付きや損傷の発生を防ぐとともに凹部と凸部との芯ズレ量を規制するための構成部品の幾何公差を緩和し加工時間を短縮する効果がある。   According to the present invention, there is an effect of reducing the machining time by preventing the seizure and damage of the concave portion and the convex portion and relaxing the geometric tolerance of the component parts for regulating the misalignment between the concave portion and the convex portion.

本考案の液圧シリンダの全体構成図（ａ）、フランジの取付け部拡大図（ｂ）である。BRIEF DESCRIPTION OF THE DRAWINGS It is the whole hydraulic cylinder block diagram (a) of this invention, and the attachment part enlarged view (b) of a flange. 本考案の第２実施例の部分構成図である。It is a partial block diagram of 2nd Example of this invention. 本考案の変形例の部分構成図である。It is a partial block diagram of the modification of this invention. 本考案の変形例の部分構成図である。It is a partial block diagram of the modification of this invention. 本考案の変形例の部分構成図である。It is a partial block diagram of the modification of this invention. 従来の液圧シリンダの全体構成図である。It is a whole block diagram of the conventional hydraulic cylinder.

両端にカバーを備えたシリンダと、一方側カバーを貫通し先端にピストン部を備えて前記シリンダを往復動する作動軸と、前記作動軸側と反対側の前記ピストン端面または前記カバー端面に互いに嵌合可能な凹部または凸部を設け、前記凹部と前記凸部の嵌合にてクッション機構を備えた液圧シリンダにおいて、前記凹部または前記凸部を備えた部材を前記ピストンまたは前記カバーと別部材にて構成し、さらに前記凹部または前記凸部を備えた部材が前記ピストンまたは前記カバーの軸芯に対し軸直角方向に自在に移動可能に固定する固定部材を設けた構成とする。以下図面に示す実施例に基づいて説明する。   A cylinder with covers at both ends, an operating shaft that passes through one side cover and has a piston at the tip and reciprocates the cylinder, and the piston end surface or the cover end surface opposite to the operating shaft side In a hydraulic cylinder provided with a concave or convex portion that can be mated, and provided with a cushion mechanism by fitting the concave portion and the convex portion, the member having the concave portion or the convex portion is separated from the piston or the cover. Further, a fixing member is provided for fixing the concave portion or the member having the convex portion so as to be freely movable in the direction perpendicular to the axis of the piston or the axis of the cover. Hereinafter, description will be made based on an embodiment shown in the drawings.

本考案が提供する実施例１を図１に示す。図１（ａ）は本考案の液圧シリンダの全体構成を示す縦断面図であり図１（ｂ）は図１（ａ）のＡ部拡大図を示す。   A first embodiment provided by the present invention is shown in FIG. FIG. 1A is a longitudinal sectional view showing the entire configuration of a hydraulic cylinder according to the present invention, and FIG. 1B is an enlarged view of a portion A in FIG.

本考案の液圧シリンダ１は図１（ａ）に示すとおり、シリンダ（円筒体）２の一端に流体の出入口３ａと連通する軸方向に穿孔された凹部９を備えたヘッドカバー４と、他端に後述の作動軸５を支受するブッシュ６を設けた流体の出入口３ｂを備えたロッドカバー７と、シリンダ（円筒体）２を進退自在に気密摺動するピストン８から構成されている。   As shown in FIG. 1 (a), the hydraulic cylinder 1 of the present invention includes a head cover 4 having a concave portion 9 which is perforated in an axial direction and communicates with a fluid inlet / outlet port 3a at one end of a cylinder (cylindrical body) 2. A rod cover 7 provided with a fluid inlet / outlet 3b provided with a bush 6 for supporting an operation shaft 5 described later, and a piston 8 that slides in a cylinder (cylindrical body) 2 in an airtight manner so as to be able to advance and retreat.

前記ピストン８の前記ロッドカバー７側端面の中心に前述の作動軸５を一体的に設けるとともに前記ヘッドカバー４と前記ピストン８とで構成される作動液室Ｂに対応する前記ピストン８の端面には、中心部に軸方向に突出する凸部１０を一体的に設けたフランジ１１を取り付けている。   The operation shaft 5 is integrally provided at the center of the end surface of the piston 8 on the rod cover 7 side, and the end surface of the piston 8 corresponding to the working fluid chamber B formed by the head cover 4 and the piston 8 is provided on the end surface of the piston 8. In addition, a flange 11 integrally provided with a convex portion 10 protruding in the axial direction is attached to the central portion.

前記凸部１０の先端部は、図１（ａ）に示すとおり前記凹部９への嵌合を容易にするため頭部が円錐状に面取りされている。また前記フランジ１１には前記凸部１０の周囲に軸方向に貫通した後述する取付けボルト穴１２が周設されている。さらに前記フランジ１１が取り付けられる前記ピストン８の端面には、前記取付けボルト穴１２に対応した位置に雌ネジ１３が螺刻されている。   As shown in FIG. 1A, the tip of the convex portion 10 has a conical chamfered head to facilitate fitting into the concave portion 9. The flange 11 is provided with a mounting bolt hole 12 (described later) that penetrates the projection 10 in the axial direction. Further, a female screw 13 is threaded on the end face of the piston 8 to which the flange 11 is attached at a position corresponding to the mounting bolt hole 12.

前記取付けボルト穴１２は、図１（ｂ）に示すとおりショルダーボルト１５の胴体Ｃとの間に軸直角方向隙間Ｓを確保する内径に穿孔されており、さらに取付けボルト穴１２の長さは前記ショルダーボルト１５のネジ部Ｄを肩部Ｅが前記雌ネジ１３の口元に当接するまでねじ込んだ位置で前記ショルダーボルト１５の頭部端面Ｆとの間に軸方向隙間Ｈを確保する長さに穿孔されている。従って、前記フランジ１１は前記ショルダーボルト１５によって前記ピストン８に固定された状態で軸方向隙間Ｈ、軸直角方向隙間Ｓだけ自在に移動可能である。   As shown in FIG. 1B, the mounting bolt hole 12 is drilled to an inner diameter that secures a clearance S in the direction perpendicular to the axis between the shoulder bolt 15 and the body C. Further, the length of the mounting bolt hole 12 is as described above. The threaded portion D of the shoulder bolt 15 is perforated to a length that secures an axial clearance H between the shoulder bolt 15 and the head end face F of the shoulder bolt 15 at a position where the shoulder portion E is in contact with the mouth of the female screw 13. Has been. Accordingly, the flange 11 is freely movable by the axial clearance H and the axial perpendicular clearance S while being fixed to the piston 8 by the shoulder bolt 15.

かかる構成のフランジ１１は、凹部９と凸部１０との芯ズレに対し軸直角方向隙間Ｓおよび軸方向隙間Ｈにより前記ピストン８の移動にともない凹部９に倣って移動しながらラジアル方向に無理な荷重を負荷することなく前記凸部１０を前記凹部９に嵌合可能に構成されている。   The flange 11 having such a configuration is impossible in the radial direction while moving along the concave portion 9 with the movement of the piston 8 by the axial clearance G and the axial clearance H with respect to the misalignment between the concave portion 9 and the convex portion 10. The convex portion 10 can be fitted into the concave portion 9 without applying a load.

本考案が提供する第２の実施例は、第１の実施例における液圧シリンダの基本的な構成であって、すなわち凸部を凹部に嵌合する液圧シリンダである。   The second embodiment provided by the present invention is a basic configuration of the hydraulic cylinder in the first embodiment, that is, a hydraulic cylinder that fits the convex portion into the concave portion.

具体的には図２に示すとおり本考案の液圧シリンダ２０は、シリンダ（円筒体）２１の一端に設けられた流体の出入口２２ａを備えたヘッドカバー２３と前記シリンダ（円筒体）２１内を進退自在に気密摺動するピストン２４とで構成される作動液室Ｂに対応する前記ヘッドカバー２３の端部に軸方向に凹形のクッションリング室Ｇを設け、前記流体の出入口２２ａに連通する貫通孔２５を備えた後述のクッションリング２６を挿入するとともに、前記ピストン２４の前記作動液室Ｂに対応する端部に前記貫通孔２５に嵌合する凸部２７を一体的に設けたものである。   Specifically, as shown in FIG. 2, the hydraulic cylinder 20 of the present invention advances and retreats within the cylinder (cylindrical body) 21 and the head cover 23 having a fluid inlet / outlet port 22 a provided at one end of the cylinder (cylindrical body) 21. A through-hole communicating with the fluid inlet / outlet port 22a is provided in the end portion of the head cover 23 corresponding to the hydraulic fluid chamber B constituted by a piston 24 that is freely hermetically slid, and is provided with a concave cushion ring chamber G in the axial direction. A later-described cushion ring 26 having 25 is inserted, and at the end of the piston 24 corresponding to the hydraulic fluid chamber B, a convex portion 27 that fits into the through-hole 25 is integrally provided.

前述のクッションリング２６は、前記クッションリング室Ｇの内径に対し軸直角方向隙間Ｓだけ小さい外径と、軸方向深さに対し軸方向隙間Ｈだけ小さい長さの形状をしており、外周に弾性シール材２８と奥底側端面に弾性シール材２９を介して前記クッションリング室Ｇに挿入されている。さらに前記クッションリング２６は、前記クッションリング室Ｇの開口部端面にボルト３０で締着された固定部材３１により、軸直角方向隙間Ｓと軸方向隙間Ｈだけ自在に移動可能に固定されている。   The cushion ring 26 has an outer diameter that is smaller by an axially perpendicular gap S than the inner diameter of the cushion ring chamber G and a length that is smaller by an axial gap H than the axial depth. The elastic seal material 28 and the back end side end face are inserted into the cushion ring chamber G via the elastic seal material 29. Further, the cushion ring 26 is fixed so as to be freely movable by an axial perpendicular gap S and an axial gap H by a fixing member 31 fastened to the opening end face of the cushion ring chamber G with a bolt 30.

かかる構成の前記クッションリング２６は、前記貫通孔２５と前記凸部２７との芯ズレに対し軸直角方向隙間Ｓおよび軸方向隙間Ｈにより前記ピストン２４の軸方向の移動にともない凸部２７に倣って移動しながらラジアル方向に無理な荷重を負荷することなく凸部２７を嵌合することができる。   The cushion ring 26 having such a configuration follows the convex portion 27 as the piston 24 moves in the axial direction due to the axial perpendicular clearance S and axial clearance H with respect to the misalignment between the through hole 25 and the convex portion 27. The convex portion 27 can be fitted without applying an excessive load in the radial direction while moving.

本考案が提供する液圧シリンダのクッション機構の特徴は以上のとおりであるが、上記ならびに図示例に限定されるものではなく種々の変形例を挙げることができる。   The features of the cushion mechanism of the hydraulic cylinder provided by the present invention are as described above. However, the invention is not limited to the above and illustrated examples, and various modifications can be given.

例えば図３に示すとおり、前記ショルダーボルト１５に代えて、前記ピストン８の作動液室Ｂに対応する端部に軸方向に凹形のフランジ室Ｊを設け、該フランジ室Ｊの内径より軸直角方向隙間Ｓだけ小さいフランジ外径と軸方向深さに対し軸方向隙間Ｈだけ小さいフランジ厚さのフランジ３２を挿入するとともに、前記フランジ室Ｊの開口部端面にボルト３３で締着された固定部材３４を設けることも可能である。   For example, as shown in FIG. 3, instead of the shoulder bolt 15, a concave flange chamber J is provided in the axial direction at the end corresponding to the hydraulic fluid chamber B of the piston 8, and the axis perpendicular to the inner diameter of the flange chamber J is provided. A flange 32 having a flange thickness smaller by an axial gap H than a flange outer diameter and an axial depth smaller by a directional gap S is inserted, and a fixing member fastened by a bolt 33 to the end face of the opening of the flange chamber J 34 can also be provided.

また図４に示すとおり、前記ピストン８の作動液室Ｂに対応する端部に軸方向の凹部３５を形成し、相対する前記ヘッドカバー４の作動液室Ｂに対応する端部に凹形のフランジ室Ｌに、中心に流体の出入口３ａに連通する通路３６を備えたフランジ３７を外周に弾性シール材３８と奥底側端面に弾性シール材３９を介して挿入し、前記フランジ室Ｌの開口部端面にボルト３３で締着された固定部材３４を設けることも可能である。   As shown in FIG. 4, an axial recess 35 is formed at the end of the piston 8 corresponding to the hydraulic fluid chamber B, and a concave flange is formed at the end of the head cover 4 corresponding to the hydraulic fluid chamber B. A flange 37 having a passage 36 communicating with the fluid inlet / outlet port 3a at the center is inserted into the chamber L through an elastic seal member 38 on the outer periphery and an elastic seal member 39 on the bottom side end surface, and the opening end surface of the flange chamber L It is also possible to provide a fixing member 34 fastened with a bolt 33.

また図５に示すとおり、前記ピストン８の作動液室Ｂに対応する端部に凹形のフランジ室Ｍを設け実施例２のクッションリング２６を挿入し、相対する前記ヘッドカバー４の作動液室Ｂに対応する端部に、中心に流体の出入口３ａに連通する通路３６を備えた凸部４０を一体的に設けることも可能である。本考案はこれらの変形例をすべて包含するものである。   Further, as shown in FIG. 5, a concave flange chamber M is provided at the end corresponding to the hydraulic fluid chamber B of the piston 8 and the cushion ring 26 of the second embodiment is inserted, and the hydraulic fluid chamber B of the head cover 4 facing the piston 8 is opposed. It is also possible to integrally provide a convex portion 40 provided with a passage 36 communicating with the fluid inlet / outlet port 3a at the center thereof at the end corresponding to. The present invention includes all of these modifications.

本考案は、汎用技術と部品の構成で実施でき、安全性の向上と騒音の減少をさせる上で産業上利用可能なものである。   The present invention can be implemented with general-purpose technologies and component configurations, and can be industrially used to improve safety and reduce noise.

１ 液圧シリンダ
２ シリンダ（円筒体）
３ａ 流体の出入口
３ｂ 流体の出入口
４ ヘッドカバー
５ 作動軸
６ ブッシュ
７ ロッドカバー
８ ピストン
９ 凹部
１０ 凸部
１１ フランジ
１２ 取付けボルト穴
１３ 雌ネジ
１５ ショルダーボルト
２０ 液圧シリンダ
２１ シリンダ（円筒体）
２２ａ 流体の出入口
２３ ヘッドカバー
２４ ピストン
２５ 貫通孔
２６ クッションリング
２７ 凸部
２８ 弾性シール材
２９ 弾性シール材
３０ ボルト
３１ 固定部材
３２ フランジ
３３ ボルト
３４ 固定部材
３５ 凹部
３６ 通路
３７ フランジ
３８ 弾性シール材
３９ 弾性シール材
４０ 凸部
４１ ヘッドカバー
４２ ロッドカバー
４３ シリンダ
４４ 作動軸
４５ ピストン
４６ 凸部
４７ 凹部
Ｂ 作動液室
Ｃ 胴体
Ｄ ネジ部
Ｅ 肩部
Ｆ 頭部端面
Ｇ クッションリング室
Ｈ 軸方向隙間
Ｊ フランジ室
Ｋ 作動液室
Ｌ フランジ室
Ｍ フランジ室
Ｓ 軸直角方向隙間 1 Hydraulic cylinder 2 Cylinder (cylindrical body)
3a Fluid inlet / outlet 3b Fluid inlet / outlet 4 Head cover 5 Actuation shaft 6 Bush 7 Rod cover 8 Piston 9 Recess 10 Protrusion 11 Flange 12 Mounting bolt hole 13 Female screw 15 Shoulder bolt 20 Hydraulic cylinder 21 Cylinder (cylindrical body)
22a Fluid inlet / outlet port 23 Head cover 24 Piston 25 Through hole 26 Cushion ring 27 Protruding portion 28 Elastic seal material 29 Elastic seal material 30 Bolt 31 Fixing member 32 Flange 33 Bolt 34 Fixing member 35 Recess 36 Passage 37 Flange 38 Elastic seal material 39 Elastic seal Material 40 Convex 41 Head cover 42 Rod cover 43 Cylinder 44 Actuating shaft 45 Piston 46 Convex 47 Concavity B Working fluid chamber C Body D Screw part E Shoulder F Head end face G Cushion ring chamber H Axial clearance J Flange chamber K Actuation Liquid chamber L Flange chamber M Flange chamber S Right angle clearance

Claims (1)

両端にカバーを備えたシリンダと、一方側カバーを貫通し先端にピストン部を備えて前記シリンダを往復動する作動軸と、前記作動軸側と反対側の前記ピストン端面または前記カバー端面に互いに嵌合可能な凹部または凸部を設け、前記凹部と前記凸部の嵌合にてクッション機構を備えた液圧シリンダにおいて、前記凹部または前記凸部を備えた部材を前記ピストンまたは前記カバーと別部材の構成とし、前記カバーの軸芯に対し軸直角方向に移動可能としたことを特徴とする液圧シリンダ。   A cylinder with covers at both ends, an operating shaft that passes through one side cover and has a piston at the tip and reciprocates the cylinder, and the piston end surface or the cover end surface opposite to the operating shaft side In a hydraulic cylinder provided with a concave or convex portion that can be mated, and provided with a cushion mechanism by fitting the concave portion and the convex portion, the member having the concave portion or the convex portion is separated from the piston or the cover. A hydraulic cylinder characterized in that it is movable in a direction perpendicular to the axis of the axis of the cover.
JP2010001044U 2010-02-19 2010-02-19 Hydraulic cylinder Ceased JP3159227U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010001044U JP3159227U (en) 2010-02-19 2010-02-19 Hydraulic cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010001044U JP3159227U (en) 2010-02-19 2010-02-19 Hydraulic cylinder

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2012286436A Continuation JP2013079727A (en) 2012-12-28 2012-12-28 Hydraulic cylinder

Publications (1)

Publication Number Publication Date
JP3159227U true JP3159227U (en) 2010-05-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102720720A (en) * 2012-06-15 2012-10-10 常州液压成套设备厂有限公司 Oil cylinder with miniature adjustable buffer device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102720720A (en) * 2012-06-15 2012-10-10 常州液压成套设备厂有限公司 Oil cylinder with miniature adjustable buffer device

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