JPH0512569B2 - - Google Patents
Info
- Publication number
- JPH0512569B2 JPH0512569B2 JP11509387A JP11509387A JPH0512569B2 JP H0512569 B2 JPH0512569 B2 JP H0512569B2 JP 11509387 A JP11509387 A JP 11509387A JP 11509387 A JP11509387 A JP 11509387A JP H0512569 B2 JPH0512569 B2 JP H0512569B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- free piston
- oil chamber
- piston
- shock absorber
- 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.)
- Expired - Lifetime
Links
- 230000035939 shock Effects 0.000 claims description 16
- 239000006096 absorbing agent Substances 0.000 claims description 15
- 239000011162 core material Substances 0.000 claims description 15
- 239000012528 membrane Substances 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 239000000428 dust Substances 0.000 claims description 10
- 239000013013 elastic material Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 description 9
- 239000002184 metal Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/066—Units characterised by the partition, baffle or like element
- F16F9/067—Partitions of the piston type, e.g. sliding pistons
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
この発明は車両のサスペンシヨンなどに用いら
れる単筒式の油圧緩衝器に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a monotube hydraulic shock absorber used in vehicle suspensions and the like.
従来の技術
例えば自動車のサスペンシヨンには、衝撃の緩
和および振動の減衰のために緩衝器（シヨツクア
ブソーバ）が設けられていることは広く知られて
いるところであり、その緩衝器のうち単筒式油圧
緩衝器は、気泡の発生がないことにより減衰力が
安定し、また取付姿勢に制約がない等の利点があ
る。この単筒式油圧緩衝器の基本的な構成は第４
図に示す通りであり、チユーブ１内にフリーピス
トン２が摺動自在に配置されて、チユーブ１の内
部が油室３とガス室４とに区画され、油室３には
オイルが充填されるとともに、バルブ５を有しか
つロツド６を連結したピストン７が設けられ、ま
たガス室４には高圧ガスが封入されている。した
がつて単筒式油圧緩衝器では、伸び工程および縮
み工程において油室３内におけるロツド６の容積
が増減するので、そのロツド６の容積に応じてフ
リーピストン２が油室３側あるいはガス室４側に
移動し、それによりオイルが負圧になつたりキヤ
ビテーシヨンを起こしたりすることを防止する。
またオイルが気体に接触することもないので、気
泡の発生が確実に阻止される。BACKGROUND TECHNOLOGY For example, it is widely known that automobile suspensions are equipped with shock absorbers to cushion shocks and dampen vibrations. Hydraulic shock absorbers have advantages such as stable damping force due to no generation of air bubbles, and no restrictions on mounting orientation. The basic configuration of this monotube hydraulic shock absorber is
As shown in the figure, a free piston 2 is slidably disposed inside a tube 1, the inside of the tube 1 is divided into an oil chamber 3 and a gas chamber 4, and the oil chamber 3 is filled with oil. A piston 7 having a valve 5 and connected to a rod 6 is also provided, and the gas chamber 4 is filled with high pressure gas. Therefore, in a single-tube hydraulic shock absorber, the volume of the rod 6 in the oil chamber 3 increases or decreases during the extension process and the contraction process, so the free piston 2 is moved to the oil chamber 3 side or to the gas chamber depending on the volume of the rod 6. 4 side, thereby preventing the oil from becoming under pressure or causing cavitation.
Furthermore, since the oil does not come into contact with gas, the generation of air bubbles is reliably prevented.
しかるにフリーピストン２は、油室３とガス室
４との間を確実にシールすることができ、また油
室３側およびガス室４側へ圧力に応じてスムース
に移動し得るものであることが要求される。そこ
で従来一般には、フリーピストン２を、金属製の
本体部分の外周にＯリングを嵌めた構成としてい
た。しかしながら上記の一般的なフリーピストン
２では、油室３側もしくはガス室４側に移動する
際に金属製の本体部分がチユーブ１の内周面に接
触し、摩耗や焼付きあるいは傷付き等を生じるこ
とがあり、またチユーブ１の内周面との間に微小
な異物を噛み込んでチユーブ１の内周面やフリー
ピストン２の本体部分の外周面もしくはシールの
ためのＯリングを傷付けることがあり、さらには
シールのためのＯリングとチユーブ１の内周面と
の間の摩擦が大きいためにフリーピストン２の動
き始めがスムースでなく、急激に移動するなどの
各種の問題があつた。 However, the free piston 2 is capable of reliably sealing between the oil chamber 3 and the gas chamber 4, and is capable of smoothly moving toward the oil chamber 3 side and the gas chamber 4 side according to the pressure. required. Therefore, in the past, the free piston 2 generally had a structure in which an O-ring was fitted around the outer periphery of the main body portion made of metal. However, in the above-mentioned general free piston 2, the metal main body comes into contact with the inner peripheral surface of the tube 1 when moving to the oil chamber 3 side or the gas chamber 4 side, causing wear, seizure, scratches, etc. In addition, minute foreign matter may get caught between the inner circumference of the tube 1 and damage the inner circumference of the tube 1, the outer circumference of the main body of the free piston 2, or the O-ring for sealing. Furthermore, there were various problems such as the free piston 2 not starting to move smoothly and moving suddenly because of the large friction between the O-ring for sealing and the inner circumferential surface of the tube 1.
このような状況を背景として、従来、フリーピ
ストンの金属製の本体部分とチユーブとの接触を
避けるために、シールのためのＯリングの外に合
成樹脂製のピストンリングを本体部分の外周に嵌
め込んだ構成が実公昭58−24029号によつて提案
されている。 Against this background, conventionally, in order to avoid contact between the metal body of the free piston and the tube, a synthetic resin piston ring was fitted around the outer periphery of the body in addition to the O-ring for sealing. A more complicated configuration was proposed in Utility Model Publication No. 58-24029.
また従来、油室とガス室とを仕切る弾性膜を設
けたフリーピストンが、特公昭61−22178号によ
つて提案されている。 Furthermore, a free piston having an elastic membrane separating an oil chamber and a gas chamber has been proposed in Japanese Patent Publication No. 22178/1983.
発明が解決しようとする問題点
しかるに上記の実公昭58−24029号によつて提
案されているフリーピストンでは、Ｏリングとピ
ストンリングとの２箇所でチユーブの内周面に接
触することになるので、軸心を中心とした揺動を
防止して金属製の本体部分とチユーブとの接触お
よびそれに起因する摩耗や焼付きなどの問題を解
消できるが、チユーブの内周面との間に異物を噛
み込むことを防止できないのみならず、チユーブ
の内周面との間で摩擦力を発生する部材がＯリン
グとピストンリングとの２部材になるので、摩擦
の増大によつて動き始めが更に急激になるなどの
問題がある。Problems to be Solved by the Invention However, in the free piston proposed in the above-mentioned Utility Model Publication No. 58-24029, the O-ring and the piston ring come into contact with the inner circumferential surface of the tube. This prevents rocking around the shaft center and eliminates problems such as contact between the metal main body and the tube, and the wear and seizure caused by this, but it is also possible to prevent foreign objects from entering between the inner circumferential surface of the tube. Not only is it impossible to prevent jamming, but since there are two members, the O-ring and the piston ring, that generate frictional force between them and the inner circumferential surface of the tube, the increased friction causes the movement to start more abruptly. There are problems such as becoming
これに対して上記の特公昭61−22178号によつ
て提案されているフリーピストンでは、油室もし
くはガス室の圧力の変動を弾性膜の変形によつて
吸収できるから、スムースに動作させることがで
きるが、特公昭61−22178号公報に示された構成
では、本体部分を２分割するとともに、その分割
部分の間に弾性膜を挟み込んでいるから、構成が
複雑であるうえに部品点数が多くてコスト高にな
る問題があり、さらにチユーブの内周面との間に
異物を噛み込むことを有効に防止し得ない問題が
ある。 On the other hand, the free piston proposed in the above-mentioned Japanese Patent Publication No. 61-22178 can absorb pressure fluctuations in the oil or gas chamber by deforming the elastic membrane, so it can operate smoothly. However, in the configuration shown in Japanese Patent Publication No. 61-22178, the main body is divided into two parts and an elastic membrane is sandwiched between the divided parts, so the configuration is complicated and has a large number of parts. There is a problem that the cost increases, and there is also a problem that it is not possible to effectively prevent foreign matter from getting caught between the tube and the inner circumferential surface of the tube.
この発明は上記の各問題点を解消すべくなされ
たもので、構成が簡単であり、しかもスムースな
挙動を補償し、さらには耐久性に優れた単筒式油
圧緩衝器を提供することを目的とするものであ
る。 This invention was made to solve each of the above-mentioned problems, and its purpose is to provide a monotube hydraulic shock absorber that is simple in structure, ensures smooth behavior, and has excellent durability. That is.
問題点を解決するための手段
この発明は、上記の目的を達成するために、フ
リーピストンによつてチユーブ内を油室とガス室
とに区画するとともに、バルブを有しかつロツド
が連結されたピストンを油圧室内に配置した単筒
式油圧緩衝器において、前記フリーピストンを、
前記チユーブの内周面に摺接する複数の環状の主
リツプと、軸線方向での一端部外周に形成されて
チユーブの内周面に摺接するダストリツプと、中
心部に形成された弾性膜とを備えた弾性材からな
る被覆体を、中心部に孔を設けた環状の芯材の外
面に取付けて一体化して構成したことを特徴とす
るものである。Means for Solving the Problems In order to achieve the above object, the present invention divides the inside of the tube into an oil chamber and a gas chamber by a free piston, and has a valve and a rod connected to the tube. In a monotube hydraulic shock absorber in which a piston is arranged in a hydraulic chamber, the free piston is
The tube includes a plurality of annular main lips that are in sliding contact with the inner peripheral surface of the tube, a dust lip that is formed on the outer periphery of one end in the axial direction and that is in sliding contact with the inner peripheral surface of the tube, and an elastic membrane formed in the center. The present invention is characterized in that a covering body made of an elastic material is attached to and integrated with the outer surface of an annular core material having a hole in the center.
作 用
この発明の油圧緩衝器においても、油室の内部
圧力の増減に伴つてフリーピストンが移動する。
そのフリーピストンは複数の主リツプによつてチ
ユーブの内周面に接触しているから、移動の際に
軸心を中心にした傾きを生じることがなく、した
がつて硬度の高い芯材がチユーブの内周面に干渉
することがない。またダストリツプによつてチユ
ーブの内周面との間に異物が侵入することが防止
される。さらに油室の内部圧力の増減によつて弾
性膜が撓むから、急激な圧力変動を弾性膜の変形
によつて吸収し、急激な挙動が防止される。そし
てこれらの主リツプおよびダストリツプならびに
弾性膜を一体に形成した被覆材を芯材に被せてフ
リーピストンが構成されているから、部品点数が
少ないうえに構成が簡単になる。Function: Also in the hydraulic shock absorber of the present invention, the free piston moves as the internal pressure of the oil chamber increases or decreases.
Since the free piston is in contact with the inner circumferential surface of the tube through a plurality of main lips, there is no inclination about the axis when it moves, and therefore the highly hard core material is attached to the tube. There is no interference with the inner peripheral surface of the Further, the dust strip prevents foreign matter from entering between the inner peripheral surface of the tube and the tube. Furthermore, since the elastic membrane flexes as the internal pressure of the oil chamber increases or decreases, rapid pressure fluctuations are absorbed by the deformation of the elastic membrane, thereby preventing sudden behavior. Since the free piston is constructed by covering the core material with a covering material in which the main lip, the dust lip, and the elastic membrane are integrally formed, the number of parts is small and the construction is simple.
実施例
つぎにこの発明を実施例に基づいて説明する。
なお、この発明は前述した第４図に示す構成を基
本構成とした単筒式油圧緩衝器を対象とし、その
フリーピストンに特徴を有するものであり、した
がつて以下に述べる実施例では、その特徴部分で
あるフリーピストンの構成について説明する。Examples Next, the present invention will be explained based on examples.
The present invention is directed to a monotube hydraulic shock absorber having the basic structure shown in FIG. 4, and is characterized by its free piston. The structure of the free piston, which is a characteristic part, will be explained.
第１図はこの発明の一実施例を示す部分断面図
であつて、チユーブ１の内部を油室３とガス室４
とに区画するフリーピストン１０は、芯材１１と
その外面に被せた被覆材１２とによつて形成され
ている。この芯材１１は金属や合成樹脂などの硬
度の高い素材で形成され、その形状は第２図に示
すように、中心部に孔１３が形成されて全体とし
て環状をなし、かつ外周縁が軸線方向に屈曲さ
れ、そして外径がチユーブ１の内径より小さく設
定されたものである。また被覆材１２はゴムなど
の弾性材料からなるものであつて、第３図に示す
ように円板部１４の外周部に軸線方向に沿う周壁
部１５を形成した形状であり、前記芯材１１を内
側に取付けるための溝１６が、周壁部１５の端部
および円板部１４の内面に形成されている。また
周壁部１５の外周面のうち軸線方向に互いにずれ
た２箇所に、前記チユーブ１の内周面に摺接する
突条すなわち主リツプ１７，１８が形成され、さ
らに円板部１４と周壁部１５との境界部分すなわ
ち軸線方向での一端部に、軸線に対して斜め外側
に向けて突出しかつ前記チユーブ１の内周面に摺
接するダストリツプ１９が形成されている。そし
て円板部１４の中心部すなわち前記芯材１１の孔
１３に対応する位置に弾性的に撓む弾性膜２０が
形成されている。 FIG. 1 is a partial sectional view showing an embodiment of the present invention, showing the interior of the tube 1 including an oil chamber 3 and a gas chamber 4.
The free piston 10 is formed by a core material 11 and a covering material 12 covering the outer surface of the core material 11. This core material 11 is made of a highly hard material such as metal or synthetic resin, and as shown in FIG. The outer diameter of the tube 1 is set to be smaller than the inner diameter of the tube 1. The covering material 12 is made of an elastic material such as rubber, and has a shape in which a peripheral wall portion 15 extending in the axial direction is formed on the outer peripheral portion of a disc portion 14 as shown in FIG. A groove 16 for attaching the inner side is formed at the end of the peripheral wall section 15 and on the inner surface of the disc section 14. Furthermore, protrusions or main lips 17 and 18 are formed on the outer circumferential surface of the circumferential wall portion 15 at two locations offset from each other in the axial direction, and are in sliding contact with the inner circumferential surface of the tube 1. A dust strip 19 is formed at the boundary between the tube 1 and the tube 1, that is, at one end in the axial direction, and projects obliquely outward with respect to the axis and slides into contact with the inner circumferential surface of the tube 1. An elastic membrane 20 that is elastically bent is formed at the center of the disc portion 14, that is, at a position corresponding to the hole 13 of the core material 11.
これら芯材１１と被覆材１２とは、被覆材１２
が芯材１１の外面を覆い、かつ前記溝１６に芯材
１１を嵌め込んだ状態で接着されて一体化され、
この状態で前記主リツプ１７，１８およびダスト
リツプ１９がチユーブ１の内周面に接触するよう
チユーブ１内に挿入されている。 These core material 11 and covering material 12 are
covers the outer surface of the core material 11 and is bonded and integrated with the core material 11 fitted into the groove 16,
In this state, the main lips 17, 18 and the dust lip 19 are inserted into the tube 1 so as to contact the inner peripheral surface of the tube 1.
したがつて上記のフリーピストン１０は、２条
の主リツプ１７，１８によつてチユーブ１の内周
面に接触しているから、軸心を中心とした傾きが
防止されてチユーブ１の内面との異常摩擦やそれ
に起因する焼付きなどの不都合が生じず、また摺
動面への異物の侵入はダストリツプ１９によつて
有効に防止される。さらに油室３の内部圧力に変
化が生じた場合、先ず前記弾性膜２０が撓むため
に、油室３内にあつてロツドを連結したピストン
がスムームに移動し、油室３の内部圧力が更に変
化してフリーピストン１０に作用する力がチユー
ブ１との間の最大摩擦力以上になると、フリーピ
ストン１０が移動し始め、したがつて緩衝器の全
体としての挙動スムースになる。そしてフリーピ
ストン１０は、前記芯材１１の外面に前記被覆材
１２を一体化するよう取付けた構成であるから、
部品点数が少なく構成の簡単なものとすることが
できる。 Therefore, since the free piston 10 is in contact with the inner circumferential surface of the tube 1 by the two main lips 17 and 18, it is prevented from tilting about the axis, and the free piston 10 is in contact with the inner circumferential surface of the tube 1. The dust strip 19 effectively prevents inconveniences such as abnormal friction and seizing caused by the friction, and the dust strip 19 effectively prevents foreign matter from entering the sliding surface. Furthermore, when a change occurs in the internal pressure of the oil chamber 3, the elastic membrane 20 first bends, so the piston connected to the rod within the oil chamber 3 moves smoothly, and the internal pressure of the oil chamber 3 changes further. When the force acting on the free piston 10 exceeds the maximum frictional force with the tube 1, the free piston 10 begins to move, and the shock absorber as a whole behaves smoothly. Since the free piston 10 has a structure in which the covering material 12 is integrally attached to the outer surface of the core material 11,
The number of parts is small and the configuration can be simplified.
発明の効果
以上の説明から明らかなようにこの発明の油圧
緩衝器では、フリーピストンの傾きによるチユー
ブ内面のかじりやフリーピストンとチユーブとの
間への異物の噛み込みによるかじりなどが防止さ
れるために、摩耗や焼付きあるいはチユーブもし
くはフリーピストンの損傷などによる耐用寿命の
低下を防止でき、また弾性膜を設けたことによ
り、スムースな動作を行なわせることができる。
さらにフリーピストンは芯材の外面に弾性材から
なる被覆材を取付けた簡単な構成であるから、必
要部品点数の削減と併せて製造工程の簡素化やコ
ストの低減を図ることができ、さらには軽量化を
図ることができる。Effects of the Invention As is clear from the above explanation, the hydraulic shock absorber of the present invention prevents galling of the inner surface of the tube due to the inclination of the free piston and galling due to foreign matter caught between the free piston and the tube. In addition, it is possible to prevent a reduction in service life due to wear, seizure, or damage to the tube or free piston, and by providing an elastic membrane, smooth operation can be achieved.
Furthermore, since the free piston has a simple structure with a covering material made of elastic material attached to the outer surface of the core material, it is possible to reduce the number of required parts, simplify the manufacturing process, and reduce costs. Weight reduction can be achieved.
第１図はこの発明に係る単筒式油圧緩衝器のフ
リーピストンの一例を示す断面図、第２図はその
芯材の断面斜視図、第３図は同被覆材の断面斜視
図、第４図は単筒式油圧緩衝器の基本構成を示す
概略図である。
１…チユーブ、３…油室、４…ガス室、５…バ
ルブ、６…ロツド、７…ピストン、１０…フリー
ピストン、１１…芯材、１２…被覆材、１３…
孔、１７，１８…主リツプ、１９…ダストリツ
プ、２０…弾性膜。
FIG. 1 is a cross-sectional view showing an example of a free piston of a monotube hydraulic shock absorber according to the present invention, FIG. 2 is a cross-sectional perspective view of its core material, FIG. 3 is a cross-sectional perspective view of the covering material, and FIG. The figure is a schematic diagram showing the basic configuration of a single-tube hydraulic shock absorber. DESCRIPTION OF SYMBOLS 1...Tube, 3...Oil chamber, 4...Gas chamber, 5...Valve, 6...Rod, 7...Piston, 10...Free piston, 11...Core material, 12...Coating material, 13...
Holes, 17, 18...Main lip, 19...Dust lip, 20...Elastic membrane.
Claims (1)
ガス室とに区画するとともに、バルブを有しかつ
ロツドが連結されたピストンを油室内に配置した
単筒式油圧緩衝器において、 前記フリーピストンが、前記チユーブの内周面
に摺接する複数の環状の主リツプと、軸線方向で
の一端部外周に形成されてチユーブの内周面に摺
接するダストリツプと、中心部に形成された弾性
膜とを備えた弾性材からなる被覆体を、中心部に
孔を設けた環状の芯材の外面に取付けて一体化し
た構成であることを特徴とする単筒式油圧緩衝
器。[Claims] 1. A monotube hydraulic shock absorber in which the inside of the tube is divided into an oil chamber and a gas chamber by a free piston, and a piston having a valve and connected to a rod is disposed in the oil chamber. , the free piston has a plurality of annular main lips that are in sliding contact with the inner peripheral surface of the tube, a dust lip that is formed on the outer periphery of one end in the axial direction and that is in sliding contact with the inner peripheral surface of the tube, and a dust lip formed in the center. 1. A single-tube hydraulic shock absorber characterized by having a structure in which a covering made of an elastic material and having an elastic membrane is attached to the outer surface of an annular core material having a hole in the center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11509387A JPS63280941A (en) | 1987-05-12 | 1987-05-12 | Single cylinder hydraulic buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11509387A JPS63280941A (en) | 1987-05-12 | 1987-05-12 | Single cylinder hydraulic buffer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63280941A JPS63280941A (en) | 1988-11-17 |
| JPH0512569B2 true JPH0512569B2 (en) | 1993-02-18 |
Family
ID=14654030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11509387A Granted JPS63280941A (en) | 1987-05-12 | 1987-05-12 | Single cylinder hydraulic buffer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63280941A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0718935A (en) * | 1993-06-28 | 1995-01-20 | Southco Inc | Latch device |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5878851A (en) * | 1996-07-02 | 1999-03-09 | Lord Corporation | Controllable vibration apparatus |
| DE502004005243D1 (en) | 2003-07-08 | 2007-11-29 | Thyssenkrupp Bilstein Suspensi | Vibration damper with amplitude-dependent damping |
| DE10351353B4 (en) * | 2003-07-08 | 2005-12-22 | Thyssenkrupp Bilstein Gmbh | Vibration damper with an amplitude dependent damping effect, in particular, for a vehicle wheel comprises a separation piston with an elastically compliant buffer |
| JP2007255446A (en) * | 2006-03-20 | 2007-10-04 | Fuji Latex Kk | Shock absorber |
| JP2009121617A (en) * | 2007-11-15 | 2009-06-04 | Toyota Motor Corp | Device for shock absorber and shock absorber |
| US20090145708A1 (en) * | 2007-12-05 | 2009-06-11 | Mando Corporation | Shock absorber |
| DE102011083744A1 (en) * | 2011-09-29 | 2013-04-04 | Aktiebolaget Skf | Seal for separating gas volume in monotube damper system of e.g. shock absorber of motorcycle, has seal lips radially resting against cylinder, where seal is formed to be axially movable in cylinder to cause or ease change of gas volume |
| JP2014240664A (en) | 2011-10-04 | 2014-12-25 | ヤマハ発動機株式会社 | Vehicle shock absorber |
| DE102015008401A1 (en) * | 2015-07-01 | 2017-01-05 | Carl Freudenberg Kg | Separating piston and monotube gas pressure shock absorber with such a separating piston |
| DE102017004478B4 (en) * | 2017-05-10 | 2019-01-31 | Carl Freudenberg Kg | Sealing ring, its use and single-tube gas shock absorber, which includes the sealing ring |
-
1987
- 1987-05-12 JP JP11509387A patent/JPS63280941A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0718935A (en) * | 1993-06-28 | 1995-01-20 | Southco Inc | Latch device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63280941A (en) | 1988-11-17 |
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