JPH1073140A - Piston for shock absorber - Google Patents
Piston for shock absorberInfo
- Publication number
- JPH1073140A JPH1073140A JP19575897A JP19575897A JPH1073140A JP H1073140 A JPH1073140 A JP H1073140A JP 19575897 A JP19575897 A JP 19575897A JP 19575897 A JP19575897 A JP 19575897A JP H1073140 A JPH1073140 A JP H1073140A
- Authority
- JP
- Japan
- Prior art keywords
- annular member
- piston
- rod
- diameter
- members
- 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
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
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、緩衝流体（shock-
absorbing fluid）を含むシリンダ内を摺動可能な、作
動ロッドに固着された緩衝装置用ピストンに関する。前
記ピストンは、各々が側縁及び外面を有する２つの外環
状部材を備える。前記外環状部材は、各々前記ロッドが
通る第１の中心孔と、前記緩衝流体を流通させ得るよう
にされた第１の流路と、前記外面に環状の空洞を形成す
る窪みとを備える。前記ピストンは、更に、前記環状の
空洞を覆うように設置可能な弾性弁座金（valve washer
s）と、中間環状部材とを備える。前記中間環状部材
は、前記作動ロッドを覆うように固着され、前記第１の
中心孔と一直線上に配置された第２の中心孔と、前記第
１の流路と一直線上に配置され前記緩衝流体を流通させ
得るようにされた第２の流路とを備える。TECHNICAL FIELD The present invention relates to a buffer fluid (shock-
The present invention relates to a shock absorber piston fixed to an operating rod, which can slide in a cylinder containing absorbing fluid. The piston comprises two outer annular members each having a side edge and an outer surface. Each of the outer annular members includes a first central hole through which the rod passes, a first flow path through which the buffer fluid can flow, and a recess forming an annular cavity in the outer surface. The piston further includes a valve washer that can be installed over the annular cavity.
s) and an intermediate annular member. The intermediate annular member is fixed so as to cover the operating rod, and a second center hole arranged in line with the first center hole, and a buffer arranged in line with the first flow path. A second flow path adapted to allow a fluid to flow therethrough.
【０００２】[0002]
【従来の技術】この種のピストンは、欧州特許第２７５
３６８号、第５０５７７３号及び第５５７５４８号から
既知であり、その本質的な特徴を以下に順序立てて概説
する。2. Description of the Related Art A piston of this kind is disclosed in EP 275
368, 505773 and 557548, the essential features of which are outlined in sequence below.
【０００３】欧州特許第２７５３６８号は、緩衝装置用
ピストンの作動ロッドに固着するための円筒状の中心孔
を対になって形成する２つの同種の部材により、前記ピ
ストンを形成することを開示している。しかしながら、
前記欧州特許は、噛合う部材の両方が、円筒状の中心孔
を備えた挿入ブシュ（insert bushing）が填め込まれる
多角形の中心孔を有し得ることもまた開示している。[0003] EP 275368 discloses that the piston is formed by two similar members forming a pair of cylindrical central holes for fastening to the working rod of a shock absorber piston. ing. However,
The European patent also discloses that both mating members may have a polygonal center hole into which is inserted an insert bushing having a cylindrical center hole.
【０００４】次に、欧州特許第５０５７７３号は、２つ
の異なる部材が結合した緩衝装置用ピストンの形状を保
護している。前記部材の一方は他方の部材の周囲を覆
い、該他方の部材は作動ロッド用の孔を有する。Next, EP 505773 protects the shape of a shock absorber piston in which two different members are joined. One of the members surrounds the other member and the other member has a hole for an actuation rod.
【０００５】最後に、欧州特許第５５７５４８号は緩衝
装置用ピストンの形成に関し、２つの同種の部材の結合
により形成される実施例が開示されている。前記部材の
各々は、作動ロッド用の孔の一部を形成しており、径方
向に噛み合う半分のブシュの形態又は前記部材の一方に
形成されたブシュが他方の部材の対応する凹部に挿嵌さ
れて前記孔を形成する形態である。しかしながら、同一
部材の両方が当接面に凹部を有し、該凹部にブシュが挿
入され、該ブシュが前記両部材の一部と共に孔を形成す
る手段もまた開示されている。[0005] Finally, EP 557548 discloses the formation of a piston for a shock absorber and discloses an embodiment formed by the joining of two similar members. Each of said members forms a part of a hole for an actuation rod, in the form of a radially meshing half bushing or a bushing formed on one of said members being fitted into a corresponding recess of the other member. In this embodiment, the holes are formed. However, means are also disclosed in which both identical members have a recess in the abutment surface, in which a bush is inserted, the bush forming a hole with a part of the two members.
【０００６】一方、上記全ての特許のうち、第２７５３
６８号及び第５０５７７３号のみが、弾性のガスケット
を挿入するために部材の一方又は両方に周囲溝を設ける
ことを開示している。前記部材を製作する際に、すなわ
ち、鋳造の際又は溝を施す対象となる部材を加工する際
に、前記溝を設けることが必要である。[0006] On the other hand, of all the patents mentioned above,
No. 68 and No. 505773 only disclose providing one or both of the members with a peripheral groove for inserting an elastic gasket. It is necessary to provide the groove when manufacturing the member, that is, when casting or processing the member to be grooved.
【０００７】[0007]
【発明が解決しようとする課題】前記３つの欧州特許に
記載の発明は以下の欠点を有する。すなわち、作動ロッ
ドへのピストンの填め込みと、ピストンの両端面に形成
された円形又は環状のチャンバのバネ座金によるシール
と、対応する弾性ガスケットを挿入するための前記周囲
溝の形成とは、全て加工及びその後の調整を必要とする
ため、最終製品の製作コストを増加させるという欠点で
ある。The inventions described in the three European patents have the following disadvantages. In other words, the fitting of the piston into the operating rod, the sealing of the circular or annular chamber formed on both end surfaces of the piston by spring washers, and the formation of the peripheral groove for inserting the corresponding elastic gasket are all performed. The disadvantage is that it requires processing and subsequent adjustment, which increases the production costs of the final product.
【０００８】[0008]
【課題を解決するための手段】このような欠点を解消す
るため、本発明の発明者は以下の本質的特徴を有するピ
ストンを創作した。すなわち、前記第１の中心孔は、前
記ロッドの直径よりも大きな直径を有する。一方、前記
第２の中心孔は、前記ロッドの直径とほぼ同じ直径を有
し、前記中間環状部材と前記ロッドとの固着を可能にす
る。また、前記外環状部材は、前記中間環状部材の外径
よりも大きな外径を有するため、弾性ガスケットを設置
する周囲溝が前記３つの部材により形成される。SUMMARY OF THE INVENTION In order to overcome such disadvantages, the inventor of the present invention has created a piston having the following essential features. That is, the first center hole has a diameter larger than the diameter of the rod. On the other hand, the second central hole has a diameter substantially equal to the diameter of the rod, and enables the intermediate annular member to be fixed to the rod. Further, since the outer annular member has an outer diameter larger than the outer diameter of the intermediate annular member, a peripheral groove for installing an elastic gasket is formed by the three members.
【０００９】[0009]
【発明の実施の形態】以下、添付図面を参照しつつ本発
明の実施形態について説明する。緩衝装置用ピストン１
は、自動車等の乗り物に使用するのに好適である。前記
ピストン１は、外面２ａ及び内面２ｂを有する互いに同
等な形状の２つの外環状部材２を備えている。前記２つ
の外環状部材２の間には、２つの面３ａ及び３ｂを有す
る中間環状部材３が配置されている。前記面３ａ及び３
ｂは、互いに同等な形状であるが互いに角度のずれがあ
り、それぞれ外環状部材２と内面２ｂで噛み合ってい
る。Embodiments of the present invention will be described below with reference to the accompanying drawings. Piston for shock absorber 1
Is suitable for use in vehicles such as automobiles. The piston 1 includes two outer annular members 2 having an outer surface 2a and an inner surface 2b and having the same shape. An intermediate annular member 3 having two surfaces 3a and 3b is arranged between the two outer annular members 2. The surfaces 3a and 3
b have the same shape but are offset from each other, and are engaged with the outer annular member 2 and the inner surface 2b, respectively.
【００１０】２つの外環状部材２の各々は第１の中心孔
２ｃを有し、中間環状部材３は第２の中心孔３ｃを有す
る。前記第２の中心孔３ｃは、ロッド４の直径とほぼ等
しい直径ｄを有するため、中間環状部材３は前記ロッド
４に嵌合し得る。これに対し、第１の中心孔２ｃの直径
Ｄは、ロッド４の直径よりもわずかに大きい。すなわ
ち、Ｄ＞ｄである。Each of the two outer annular members 2 has a first central hole 2c, and the intermediate annular member 3 has a second central hole 3c. Since the second center hole 3c has a diameter d substantially equal to the diameter of the rod 4, the intermediate annular member 3 can be fitted to the rod 4. On the other hand, the diameter D of the first center hole 2c is slightly larger than the diameter of the rod 4. That is, D> d.
【００１１】外環状部材２の各々は中間環状部材３より
も大きな外径を有するため、弾性ガスケット６を設置す
るための周囲溝５が、２つの外環状部材２及び中間環状
部材３により形成される。Since each of the outer annular members 2 has an outer diameter larger than that of the intermediate annular member 3, a peripheral groove 5 for installing the elastic gasket 6 is formed by the two outer annular members 2 and the intermediate annular member 3. You.
【００１２】好適には、各外環状部材２は、前記中間環
状部材３を２つの外環状部材２の間に設置するための円
形の凹部２ｄを内面２ｂ側に備える。外環状部材２の外
面２ａ側には、環状の空洞１３を形成する窪みがある。
前記空洞１３は、截頭円錐状（frustoconical）の側壁
１２を有し、該側壁１２の間に空洞１３の底部がある。
図８に示すように、弾性の弁座金（valve washer）１４
は、前記空洞１３を覆うように配置され該空洞を閉じた
状態にする。Preferably, each outer annular member 2 has a circular concave portion 2d on the inner surface 2b side for installing the intermediate annular member 3 between the two outer annular members 2. On the outer surface 2a side of the outer annular member 2, there is a depression forming an annular cavity 13.
The cavity 13 has frustoconical side walls 12 between which the bottom of the cavity 13 is located.
As shown in FIG. 8, an elastic valve washer 14
Is disposed to cover the cavity 13 and closes the cavity.
【００１３】図４から図６に示すように、中間環状部材
３は、流体が流通するための第２の流路７、８を備え、
第１の流路９、１０と相俟って外環状部材２内に流体を
流通させる。As shown in FIGS. 4 to 6, the intermediate annular member 3 includes second flow paths 7 and 8 through which a fluid flows.
The fluid flows through the outer annular member 2 in cooperation with the first flow paths 9 and 10.
【００１４】第２の流路７、８は、より小さな縦断面部
７ａ、８ｂ及びより大きな縦断面部７ｂ、８ａを備え
る。好適には、第２の孔８は第２の孔７と周方向に交互
に設けられる。第２の孔８のより大きな縦断面部８ａは
面３ａで開口し（より小さな縦断面部８ｂは面３ｂで開
口する）、第２の孔７のより大きな縦断面部７ｂは面３
ｂで開口する（より小さな縦断面部７ａは面３ａで開口
する）。The second flow paths 7, 8 have smaller longitudinal sections 7a, 8b and larger longitudinal sections 7b, 8a. Preferably, the second holes 8 are provided alternately with the second holes 7 in the circumferential direction. The larger longitudinal section 8a of the second hole 8 opens on the surface 3a (the smaller longitudinal section 8b opens on the surface 3b), and the larger longitudinal section 7b of the second hole 7 opens on the surface 3a.
b (the smaller longitudinal section 7a opens at the surface 3a).
【００１５】次に、図１から図３及び図８に示すよう
に、２つの外環状部材２は、第１の流路１０の第１群及
び第１の流路９の第２群を有する。図８に示すように、
第１群の各第１の孔１０は、ほぼ一定の縦断面を有し、
外面２ａの環状の空洞１３と、第２の流路７、８の小さ
な縦断面部７ａ、８ｂのいずれか一つとの間に延びてい
る。第２群の第１の流路９は部分９ａを有し、該部分９
ａの開口端は、第２の流路７、８のより大きな縦断面部
７ｂ、８ａの開口端と少なくとも部分的に対向してい
る。前記部分９ａは延長部分９ｂへと延ばされ、該延長
部分９ｂの開口端は、外面２ａの領域内にあり、外環状
部材２の空洞１３と側縁との間に位置する。好適には、
第１群及び第２群のいずれか一方の第１の流路は、他方
の群の第１の流路と周方向に交互に設けられる。Next, as shown in FIG. 1 to FIG. 3 and FIG. 8, the two outer annular members 2 have a first group of first flow paths 10 and a second group of first flow paths 9. . As shown in FIG.
Each first hole 10 of the first group has a substantially constant longitudinal section,
It extends between the annular cavity 13 on the outer surface 2a and one of the small longitudinal sections 7a, 8b of the second flow paths 7, 8. The second group of first channels 9 has a portion 9a,
The open end of “a” is at least partially opposed to the open ends of the larger vertical cross sections 7b, 8a of the second flow paths 7, 8. Said portion 9a extends into an extension 9b, the open end of which is in the region of the outer surface 2a and is located between the cavity 13 of the outer annular member 2 and the side edge. Preferably,
The first flow path of one of the first group and the second group is provided alternately with the first flow path of the other group in the circumferential direction.
【００１６】外環状部材２及び中間環状部材３は、粉末
冶金法により製造され得るが、中間環状部材３は、１枚
又は２枚の板状の金属部品からも製造され得る。The outer annular member 2 and the intermediate annular member 3 can be manufactured by powder metallurgy, but the intermediate annular member 3 can also be manufactured from one or two plate-shaped metal parts.
【００１７】環状部材２及び３は、互いに噛み合うよう
に、各々の流通孔の相対的な位置決めを行うための舌
片、溝、ピン等（図示せず）の手段を備えている。The annular members 2 and 3 are provided with tongues, grooves, pins and the like (not shown) for positioning the respective flow holes relatively so as to mesh with each other.
【００１８】３つの環状部材を、電気溶接、釘止め（na
iling）、ろう付け（brazing）、接着剤による接着（gl
ueing）等の従来手法のいずれかにより結合してもよ
い。The three annular members are electrically welded, nailed (na
), brazing, gluing with adhesive (gl
ueing) and the like.
【００１９】図８に示すように、ピストン１はシリンダ
１１内にあり、該シリンダ１１内には緩衝流体が入れら
れている。例えばピストンが下方に作動する際、下側の
外環状部材２の延長部分９ｂの開口端を通って入ること
により、シリンダの下部にある緩衝流体のみがピストン
を通って流れ得る。前記流体は、引き続き、部分９ａ、
中間環状部材３の縦断面部８ａ及び８ｂを順次通って流
れ、上側の外環状部材２の第１の孔１０を通って空洞１
３に達する。最終的に、流体によって生じる圧力により
上側の弾性座金１４は外周部が変形して空洞１３を覆う
位置から上方へ離れ、流体はシリンダ１１の頂部に流れ
得る。As shown in FIG. 8, the piston 1 is provided in a cylinder 11 in which a buffer fluid is contained. For example, when the piston moves downward, by entering through the open end of the extension 9b of the lower outer annular member 2, only the buffer fluid at the lower part of the cylinder can flow through the piston. The fluid continues in part 9a,
It flows sequentially through the longitudinal sections 8a and 8b of the intermediate annular member 3 and passes through the first hole 10 of the upper outer annular member 2 to form the cavity 1
Reach 3. Eventually, the pressure generated by the fluid causes the upper elastic washer 14 to move upward from the position where the outer peripheral portion is deformed and covers the cavity 13, and the fluid can flow to the top of the cylinder 11.
【００２０】[0020]
【発明の効果】本発明のピストンを用いれば、必要な加
工作業が最小限に軽減される。すなわち、中間環状部材
３の第２の中心孔３ｃのわずかな研削研磨作業のみに限
定され、外環状部材２の第１の中心孔２ｃの研削研磨を
必要としない。周囲溝５もまた加工する必要がない。With the piston according to the invention, the required machining operations are reduced to a minimum. That is, the operation is limited to only a slight grinding and polishing of the second center hole 3c of the intermediate annular member 3, and does not require the grinding and polishing of the first center hole 2c of the outer annular member 2. The peripheral groove 5 also need not be machined.
【図１】図１は、本発明に係る緩衝装置用ピストンの外
環状部材の一実施形態を示す平面図である。FIG. 1 is a plan view showing an embodiment of an outer annular member of a shock absorber piston according to the present invention.
【図２】図２は、図３のII−II線に沿った断面図であ
る。FIG. 2 is a sectional view taken along the line II-II in FIG. 3;
【図３】図３は、図１に示す外環状部材の底面図であ
る。FIG. 3 is a bottom view of the outer annular member shown in FIG. 1;
【図４】図４は、本発明に係る緩衝装置用ピストンの中
間環状部材の一実施形態を示す平面図である。FIG. 4 is a plan view showing an embodiment of an intermediate annular member of the shock absorber piston according to the present invention.
【図５】図５は、図６のＶ−Ｖ線に沿った断面図であ
る。FIG. 5 is a sectional view taken along the line VV in FIG. 6;
【図６】図６は、図４に示す中間環状部材の底面図であ
る。FIG. 6 is a bottom view of the intermediate annular member shown in FIG. 4;
【図７】図７は、本発明に係る緩衝装置用ピストンの３
つの環状部材の概要を示す立面図である。FIG. 7 is a view showing a piston 3 for a shock absorber according to the present invention.
It is an elevational view which shows the outline of two annular members.
【図８】図８は、本発明に係る緩衝装置用ピストンの一
実施形態を示す径方向の断面図である。FIG. 8 is a radial cross-sectional view showing one embodiment of the shock absorber piston according to the present invention.
【符号の説明】 １ 緩衝装置用ピストン ２ 外環状部材 ３ 中間環状部材 ４ ロッド ５ 周囲溝 ６ 弾性ガスケット ７ 第２の流路 ８ 第２の流路 ９ 第１の流路 １０ 第１の流路 １３ 空洞[Description of Signs] 1 Piston for shock absorber 2 Outer annular member 3 Intermediate annular member 4 Rod 5 Peripheral groove 6 Elastic gasket 7 Second flow path 8 Second flow path 9 First flow path 10 First flow path 13 cavities
───────────────────────────────────────────────────── フロントページの続き (72)発明者 セザル モリンス バルトラ スペイン 08348−カブリルス バルセロ ナ ミモセス 35 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Cesar Molins Baltra Spain 08348-Cabrils Barceló Na Mimoses 35
Claims (5)
な、作動ロッドに固着された緩衝装置用ピストンであっ
て、該ピストンは、各々が側縁及び外面を有する２つの
外環状部材を備え、該外環状部材は、各々前記ロッドが
通り得る第１の中心孔と、前記緩衝流体を流通させ得る
複数の第１の流路と、前記外面に環状の空洞を形成する
窪みとを備え、前記ピストンは、更に、前記環状の空洞
を覆うように設置し得る弾性弁座金と、中間環状部材と
を備え、前記中間環状部材は、前記作動ロッドの周囲を
覆うように取り付けられ、前記第１の中心孔と一直線上
に配置された第２の中心孔と、前記複数の第１の流路と
一直線上に配置され前記緩衝流体を流通させ得る複数の
第２の流路とを備え、前記第１の中心孔は、前記ロッド
の直径よりも大きな直径を有し、前記第２の中心孔は、
前記ロッドの直径とほぼ同じ直径を有し、前記中間環状
部材と前記ロッドとの固着を可能にし、前記外環状部材
は、前記中間環状部材の外径よりも大きな外径を有し、
弾性ガスケットを設置するための周囲溝が前記３つの部
材により形成されることを特徴とする前記ピストン。1. A shock absorber piston fixed to an actuation rod slidable in a cylinder containing a shock absorbing fluid, the piston comprising two outer annular members each having a side edge and an outer surface. The outer annular member includes a first center hole through which the rod can pass, a plurality of first flow paths through which the buffer fluid can flow, and a recess forming an annular cavity in the outer surface, The piston further includes an elastic valve washer that can be installed to cover the annular cavity, and an intermediate annular member, wherein the intermediate annular member is attached so as to cover a periphery of the operating rod, A second center hole arranged on a straight line with the center hole, and a plurality of second flow passages arranged on a straight line with the plurality of first flow passages and capable of flowing the buffer fluid, The first central hole has a diameter larger than the diameter of the rod. A diameter of the second central hole,
Having a diameter substantially the same as the diameter of the rod, allowing the intermediate annular member to be fixed to the rod, the outer annular member having an outer diameter greater than the outer diameter of the intermediate annular member,
The piston according to claim 1, wherein a peripheral groove for installing an elastic gasket is formed by the three members.
さな縦断面部と、より大きな縦断面部とを備え、前記各
第２の流路の前記大きな縦断面部と、該第２の流路に周
方向に隣り合う他の第２の流路の前記小さな縦断面部と
が、前記２つの外環状部材のうち同じ部材に接している
ことを特徴とする請求項１に記載のピストン。2. Each of the plurality of second flow paths has a smaller vertical cross-section and a larger vertical cross-section, and each of the second flow paths has a larger vertical cross-section than the second flow path. 2. The piston according to claim 1, wherein the small vertical cross-sectional portion of the other second flow path circumferentially adjacent to the path is in contact with the same one of the two outer annular members. 3.
の１つとの間に延びる前記第１の流路の第１群と、 前記外環状部材の前記側縁及び前記環状の空洞の間に位
置する前記外面の領域と前記第２の流路の前記大きな縦
断面部の１つとの間に延びる前記第１の流路の第２群と
を備え、 前記第１群及び第２群のうち一方の群の第１の流路の各
々は、他方の群の２つの第１の流路の間に位置している
ことを特徴とする請求項１に記載のピストン。3. Each of said outer annular members comprises: a first group of said first channels extending between said annular cavity and one of said small longitudinal sections of said second channel; A second group of first channels extending between an area of the outer surface located between the side edge of an annular member and the annular cavity and one of the large longitudinal sections of the second channel; Wherein each of the first flow paths of one of the first group and the second group is located between two first flow paths of the other group. Item 2. A piston according to item 1.
は、粉末冶金法により製作されることを特徴とする請求
項１に記載のピストン。4. The piston according to claim 1, wherein the outer annular member and the intermediate annular member are manufactured by a powder metallurgy method.
作されることを特徴とする請求項１に記載のピストン。5. The piston according to claim 1, wherein the intermediate annular member is made of a plate-like metal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES9601621 | 1996-07-22 | ||
| ES9601621A ES2138495B1 (en) | 1996-07-22 | 1996-07-22 | PISTON STRUCTURE FOR IMPACT SHOCK ABSORBER. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1073140A true JPH1073140A (en) | 1998-03-17 |
Family
ID=8295563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19575897A Pending JPH1073140A (en) | 1996-07-22 | 1997-07-22 | Piston for shock absorber |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH1073140A (en) |
| BR (1) | BR9704035A (en) |
| ES (1) | ES2138495B1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020040203A (en) * | 2000-11-24 | 2002-05-30 | 밍 루 | Piston valve for use in a shock absorber |
| KR20030029669A (en) * | 2001-10-05 | 2003-04-16 | 현대자동차주식회사 | a friction decreasing structure of shock absorber in vehicles |
| JP2007198515A (en) * | 2006-01-27 | 2007-08-09 | Kayaba Ind Co Ltd | Piston |
| CN102927190A (en) * | 2011-08-11 | 2013-02-13 | 株式会社万都 | Piston assembly of shock absorber |
| CN104319195A (en) * | 2014-06-27 | 2015-01-28 | 国家电网公司 | An oil damper and a breaker actuator using the oil damper |
| CN105650057A (en) * | 2016-04-01 | 2016-06-08 | 武汉科技大学 | Dustproof device of working roller balance oil cylinder self-defense block |
| JP2018535373A (en) * | 2015-11-27 | 2018-11-29 | コニ・ビー．ブイ．Ｋｏｎｉ Ｂ．Ｖ． | Shock absorber with improved piston configuration |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2883611B1 (en) * | 2005-03-22 | 2010-09-10 | Peugeot Citroen Automobiles Sa | TWO-COVER CROSS-FLOW DAMPING DEVICE WITH INDEXING |
| FR2883612B1 (en) * | 2005-03-22 | 2010-09-10 | Peugeot Citroen Automobiles Sa | DOUBLE-COVER CROSS-FLOW DAMPING DEVICE WITHOUT INDEXING |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4121704A (en) * | 1977-03-21 | 1978-10-24 | Girling Limited | Valve assembly for a piston of a telescopic damper |
| DE3701557A1 (en) * | 1987-01-21 | 1988-08-04 | Bilstein August Gmbh Co Kg | SHOCK ABSORBER PISTON, ESPECIALLY FOR MOTOR VEHICLE PIPE SHOCK ABSORBER |
| DE9103740U1 (en) * | 1991-03-27 | 1991-06-20 | Ringsdorff-Werke Gmbh, 5300 Bonn, De | |
| DE59200597D1 (en) * | 1992-02-26 | 1994-11-10 | Ringsdorff Sinter Gmbh | Multi-part shock absorber piston with joining elements. |
-
1996
- 1996-07-22 ES ES9601621A patent/ES2138495B1/en not_active Expired - Fee Related
-
1997
- 1997-07-21 BR BR9704035A patent/BR9704035A/en not_active Application Discontinuation
- 1997-07-22 JP JP19575897A patent/JPH1073140A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020040203A (en) * | 2000-11-24 | 2002-05-30 | 밍 루 | Piston valve for use in a shock absorber |
| KR20030029669A (en) * | 2001-10-05 | 2003-04-16 | 현대자동차주식회사 | a friction decreasing structure of shock absorber in vehicles |
| JP2007198515A (en) * | 2006-01-27 | 2007-08-09 | Kayaba Ind Co Ltd | Piston |
| CN102927190A (en) * | 2011-08-11 | 2013-02-13 | 株式会社万都 | Piston assembly of shock absorber |
| JP2013040680A (en) * | 2011-08-11 | 2013-02-28 | Mando Corp | Piston assembly of shock absorber |
| US8752682B2 (en) | 2011-08-11 | 2014-06-17 | Mando Corporation | Piston assembly of shock absorber |
| DE102012010057B4 (en) | 2011-08-11 | 2022-05-25 | Mando Corporation | Piston arrangement of a vibration damper |
| CN104319195A (en) * | 2014-06-27 | 2015-01-28 | 国家电网公司 | An oil damper and a breaker actuator using the oil damper |
| JP2018535373A (en) * | 2015-11-27 | 2018-11-29 | コニ・ビー．ブイ．Ｋｏｎｉ Ｂ．Ｖ． | Shock absorber with improved piston configuration |
| CN105650057A (en) * | 2016-04-01 | 2016-06-08 | 武汉科技大学 | Dustproof device of working roller balance oil cylinder self-defense block |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2138495A1 (en) | 2000-01-01 |
| ES2138495B1 (en) | 2000-08-16 |
| BR9704035A (en) | 1998-12-22 |
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