WO2007095825A1 - Hydraulically actuated multi-disc clutch assembly - Google Patents
Hydraulically actuated multi-disc clutch assembly Download PDFInfo
- Publication number
- WO2007095825A1 WO2007095825A1 PCT/CN2007/000053 CN2007000053W WO2007095825A1 WO 2007095825 A1 WO2007095825 A1 WO 2007095825A1 CN 2007000053 W CN2007000053 W CN 2007000053W WO 2007095825 A1 WO2007095825 A1 WO 2007095825A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clutch
- piston
- drum
- friction
- clutch drum
- Prior art date
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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
- F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
- F16D25/0638—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/12—Details not specific to one of the before-mentioned types
- F16D25/126—Details not specific to one of the before-mentioned types adjustment for wear or play
Definitions
- the multi-plate hydraulic clutch of the utility model belongs to the field of engines, and particularly relates to a multi-plate hydraulic clutch installed in a crankcase of a two-wheeled motorcycle, a three-wheeled motor vehicle and a four-wheeled motor vehicle. Background technique
- the wet multi-plate clutch In the current two-wheeled motorcycles, three-wheeled motorcycles and four-wheeled motor vehicles, most of the wet multi-plate clutches are used.
- the wet multi-plate clutch often transmits the torque by the friction force generated by the preloading spring pressure, but it is caused by improper operation and the like.
- Early wear causes the spring pressure to drop, which causes the slip and clutch stroke to increase as the torque is transmitted. This is usually solved by replacing the friction lining and adjusting the stroke. At the same time, due to different operators, the wear state is different, thereby reducing the operational accuracy.
- the purpose of the utility model is achieved by the following measures: clutch drum, clutch piston, check valve ball, 0-shaped rubber sealing ring, wave spring, steel sheet, friction plate, retaining ring, friction hub, return spring, back
- the spring seat is composed of a snap ring, the one-way valve ball is installed in the clutch piston, the 0-shaped rubber sealing ring is installed in the groove of the clutch piston, the clutch piston is disposed at the bottom of the clutch drum, and the return spring is mounted on the return spring seat
- the snap ring is stuck on the clutch drum, the wave spring is installed in the piston groove, the steel plate and the friction plate are mounted on the clutch piston, and are alternately installed in the clutch drum, and the friction hub is mounted on the last friction plate, and the retaining ring is engaged
- the steel piece is coupled with the clutch drum, the clutch assembly is mounted on the shaft, the gasket is placed, and the lock nut is fixed on the shaft, and the washer and the needle bearing are sleeved on the shaft, double-connected
- the control oil enters the shaft and fills the inner cavity formed by the clutch piston and the clutch drum.
- the ball is sealed by the one-way valve under the oil pressure, and the clutch piston moves outward, pushing the wave spring, the steel piece, the friction plate and the friction.
- the hub moves outwards and ends at the retaining ring.
- the clutch is disengaged, the oil pressure is released from the circuit and the check valve ball, and the steel piece and the friction plate are separated by the return spring.
- the one-way wide ball stops in the piston cone of the hydraulic clutch, and the oil will not leak.
- the one-way valve ball moves upwards under the action of centrifugal force, and the oil leaks out.
- the friction plate and the steel sheet are multi-piece.
- the utility model has the unique structure, the multi-plate hydraulic clutch is directly installed in the crankcase of the engine, and the wave spring combines to play a buffering role to prevent the hydraulic clutch from being flushed, and the one-way valve ball can be separated and lubricated when separated, when worn
- the hydraulic clutch piston automatically compensates for the gap under the action of hydraulic pressure.
- Figure 1 is a schematic view of the structure of the present invention.
- Figure 2 is a schematic view of the structure of the present invention.
- the components of the present invention include a clutch drum 1, a clutch piston 2, a check valve ball 3, a 0-shaped rubber seal ring 4, a wave spring 5, a steel plate 6, a friction plate 7, Retaining ring 8, friction hub 9, return spring 10, return spring seat 11, 0 rubber seal 12, snap ring 13, clutch assembly 14, lock nut 15, spacer 16, 0 rubber seal 17 , 0-shaped rubber seal 18, double gear 19, washer 20, needle bearing 21, shaft 22, check valve ball is loaded into the clutch piston, 0-shaped rubber seal 4 and 0-shaped rubber seal 12 are loaded In the groove of the clutch piston, the clutch piston assembly is loaded into the bottom of the clutch drum, and the return spring and the return spring seat are placed to clamp the snap ring on the clutch drum.
- the wave spring is placed in the groove of the piston surface, and the steel piece and the friction plate and the friction hub are sequentially loaded into the steel plate, and a total of three steel pieces and four friction plates are inserted into the clutch drum ring groove, wherein the steel piece is coupled with the clutch drum. .
- the clutch assembly is mounted on the shaft, placed in the washer 16, fixed to the shaft by a lock nut 15, the washer 20 and the needle bearing 21 are sleeved on the shaft, and the small end of the double gear 19 is connected to the friction plate 7.
- the double gear 19 is supported on the needle bearing 21.
- the wave spring acts as a buffer to prevent the hydraulic clutch from rushing.
- the check valve speeds up separation and lubrication when separated.
- the hydraulic clutch piston 2 automatically compensates for the clearance under the action of hydraulic pressure.
- the clutch is mounted in the crankcase of the engine and the clutch drum is fixed to the shaft. The power is transmitted from the double gear, passing through the friction plate and the steel piece, and is transmitted from the hydraulic clutch drum through the
Abstract
A hydraulically actuated multi-disc clutch assembly includes a clutch drum, a clutch piston, a check valve, O-rings, a wavy spring, steel plates, friction discs, a stop ring, a friction hub, a return spring, a return spring seat, and a snap ring. The check valve is installed in the clutch piston. The clutch piston is positioned on the bottom of the clutch drum. The return spring is fixed on the spring seat. The wavy spring is located within a groove on the face of the clutch piston. The stop ring is secured into an annular groove on the clutch drum. The steel plates are joined to the clutch drum. The clutch assembly is mounted on a shaft. A gear is supported on a needle bearing. The clutch assembly has unique structure and is directly mounted in the crankcase of engine. The wavy spring provides cushion function during engage. The clutch piston can compensate clearance automatically.
Description
多片液压离合器 Multi-plate hydraulic clutch
技术领域 Technical field
本实用新型多片液压离合器属于发动机领域，特别是涉及一种应用于两轮摩 托车、 三轮摩托车、 四轮机动车辆， 安装在发动机曲轴箱内的多片液压离合器。 背景技术 The multi-plate hydraulic clutch of the utility model belongs to the field of engines, and particularly relates to a multi-plate hydraulic clutch installed in a crankcase of a two-wheeled motorcycle, a three-wheeled motor vehicle and a four-wheeled motor vehicle. Background technique
在目前两轮摩托车、 三轮摩托车及四轮机动车辆中多数采用湿式多片离合 器，湿式多片离合器常通过预紧弹簧压力产生的摩擦力来传递扭矩， 但由于操作 不当等原因引起的早期磨损，使得弹簧压力下降，从而造成传递扭矩时打滑和离 合行程变大，一般通过更换摩擦片和调整行程解决。同时由于不同的操作者会使 得磨损状态不同， 从而降低了操作准确性。 In the current two-wheeled motorcycles, three-wheeled motorcycles and four-wheeled motor vehicles, most of the wet multi-plate clutches are used. The wet multi-plate clutch often transmits the torque by the friction force generated by the preloading spring pressure, but it is caused by improper operation and the like. Early wear causes the spring pressure to drop, which causes the slip and clutch stroke to increase as the torque is transmitted. This is usually solved by replacing the friction lining and adjusting the stroke. At the same time, due to different operators, the wear state is different, thereby reducing the operational accuracy.
实用新型内容 Utility model content
本实用新型的目的在于避免现有技术的不足之处， 而设计一种液压离合器。 它可以弥补磨损产生的间隙， 保持传递扭矩不变， 使离合器工作及操作正常。 It is an object of the present invention to avoid the deficiencies of the prior art and to design a hydraulic clutch. It can compensate for the gap generated by wear, keep the transmission torque constant, and make the clutch work and operate normally.
本实用新型的目的是通过以下措施来达到的， 离合器鼓， 离合器活塞， 单向 阀球， 0形橡胶密封圈， 波形弹簧， 钢片， 摩擦片， 挡圈， 摩擦毂， 回位弹簧， 回位弹簧座， 卡环组成， 单向阀球安装在离合器活塞中， 0形橡胶密封圈安装在 离合器活塞的槽中，离合器活塞设置在离合器鼓的底部， 回位弹簧安装在回位弹 簧座上，卡环卡在离合器鼓上，波形弹簧安装在活塞面槽中， 钢片和摩擦片安装 在离合器活塞上， 交替安装在离合器鼓中， 摩擦毂安装在最后一片摩擦片上面， 挡圈卡入离合器鼓环槽内，钢片与离合器鼓联接， 离合器总成装在轴上， 放入垫 片，用锁紧螺母把其固定在轴上， 垫片和滚针轴承套在轴上，双联齿轮小端与摩 擦片连接， 双联齿轮支撑在滚针轴承上。离合器工作时， 控制机油进入轴内， 并 充满离合器活塞与离合器鼓形成的内腔，在油压下单向阀球密封，离合器活塞向 外移动， 推着波形弹簧、 钢片、 摩擦片及摩擦毂向外移动， 最后止位于挡圈处。 离合器分离时， 从回路和单向阀球泄掉油压， 在回位弹簧的推动下， 钢片、 摩擦 片分离。 在油压作用下单向阔球止位在液压离合器活塞锥孔内， 机油不会泄漏； 当没有油压时， 单向阀球在离心力作用下， 向上运动， 机油泄漏出， 这样可以加
快分离速度， 并对摩擦片进行润滑。波形弹簧结合时起到缓冲作用， 防止液压离 合器摩擦片与钢片接合时发冲。接合时，动力由双联齿轮到摩擦片到钢片到离合 器鼓到轴输出， 分离时， 动力在摩擦片和钢片间中断。摩擦片磨损时， 液压离合 器活塞会在液压作用下自动弥补间隙。 The purpose of the utility model is achieved by the following measures: clutch drum, clutch piston, check valve ball, 0-shaped rubber sealing ring, wave spring, steel sheet, friction plate, retaining ring, friction hub, return spring, back The spring seat is composed of a snap ring, the one-way valve ball is installed in the clutch piston, the 0-shaped rubber sealing ring is installed in the groove of the clutch piston, the clutch piston is disposed at the bottom of the clutch drum, and the return spring is mounted on the return spring seat The snap ring is stuck on the clutch drum, the wave spring is installed in the piston groove, the steel plate and the friction plate are mounted on the clutch piston, and are alternately installed in the clutch drum, and the friction hub is mounted on the last friction plate, and the retaining ring is engaged In the clutch drum ring groove, the steel piece is coupled with the clutch drum, the clutch assembly is mounted on the shaft, the gasket is placed, and the lock nut is fixed on the shaft, and the washer and the needle bearing are sleeved on the shaft, double-connected The small end of the gear is connected to the friction plate, and the double gear is supported on the needle bearing. When the clutch is working, the control oil enters the shaft and fills the inner cavity formed by the clutch piston and the clutch drum. The ball is sealed by the one-way valve under the oil pressure, and the clutch piston moves outward, pushing the wave spring, the steel piece, the friction plate and the friction. The hub moves outwards and ends at the retaining ring. When the clutch is disengaged, the oil pressure is released from the circuit and the check valve ball, and the steel piece and the friction plate are separated by the return spring. Under the action of oil pressure, the one-way wide ball stops in the piston cone of the hydraulic clutch, and the oil will not leak. When there is no oil pressure, the one-way valve ball moves upwards under the action of centrifugal force, and the oil leaks out. Quickly separate the speed and lubricate the friction plates. When the wave spring is combined, it acts as a buffer to prevent the hydraulic clutch friction plate from rushing when it is engaged with the steel piece. When engaged, the power is split from the double gear to the friction plate to the steel plate to the clutch drum to the shaft. When separated, the power is interrupted between the friction plate and the steel sheet. When the friction lining wears, the hydraulic clutch piston automatically compensates for the clearance under the action of hydraulic pressure.
摩擦片和钢片为多片式。 The friction plate and the steel sheet are multi-piece.
本实用新型结构独特， 多片式液压离合器， 直接安装在发动机曲轴箱内， 波 形弹簧结合时起到缓冲作用，防止液压离合器发冲，单向阀球在分离时能加快分 离和润滑， 磨损时， 液压离合器活塞会在液压作用下自动弥补间隙。 附图说明 The utility model has the unique structure, the multi-plate hydraulic clutch is directly installed in the crankcase of the engine, and the wave spring combines to play a buffering role to prevent the hydraulic clutch from being flushed, and the one-way valve ball can be separated and lubricated when separated, when worn The hydraulic clutch piston automatically compensates for the gap under the action of hydraulic pressure. DRAWINGS
附图 1是本实用新型的结构示意图。 BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view of the structure of the present invention.
附图 2是本实用新型的结构示意图。 Figure 2 is a schematic view of the structure of the present invention.
具体实施方式 detailed description
下面结合附图对本实用新型作进一步说明。 The present invention will be further described below in conjunction with the accompanying drawings.
如附图 1、 附图 2所示， 本实用新型的部件有离合器鼓 1， 离合器活塞 2， 单向阀球 3， 0形橡胶密封圈 4， 波形弹簧 5， 钢片 6， 摩擦片 7， 挡圈 8， 摩擦 毂 9， 回位弹簧 10, 回位弹簧座 11， 0形橡胶密封圈 12， 卡环 13， 离合器总成 14, 锁紧螺母 15， 垫片 16， 0形橡胶密封圈 17， 0形橡胶密封圈 18， 双联齿 轮 19， 垫片 20， 滚针轴承 21， 轴 22， 单向阀球装入离合器活塞中， 0形橡胶密 封圈 4和 0形橡胶密封圈 12装入离合器活塞的槽中， 离合器活塞组件装入离合 器鼓的底部， 放上回位弹簧、回位弹簧座， 将卡环卡在离合器鼓上。波形弹簧放 在活塞面槽中， 依次装入钢片和摩擦片及摩擦毂， 共 3个钢片， 4个摩擦片， 将 挡圈卡入离合器鼓环槽内， 其中钢片与离合器鼓联接。离合器总成装在轴上， 放 入垫片 16， 用锁紧螺母 15把其固定在轴上， 垫片 20和滚针轴承 21套在轴上， 双联齿轮 19小端与摩擦片 7连接， 双联齿轮 19支撑在滚针轴承 21上。 波形弹 簧起到缓冲作用， 防止液压离合器发冲。 单向阀球在分离时能加快分离和润滑。 液压离合器活塞 2会在液压作用下自动弥补间隙。 离合器安装在发动机曲轴箱 内， 离合器鼓固定在轴上。动力由双联齿轮传入， 经过摩擦片、钢片， 由液压离 合器鼓通过轴传出。
As shown in FIG. 1 and FIG. 2, the components of the present invention include a clutch drum 1, a clutch piston 2, a check valve ball 3, a 0-shaped rubber seal ring 4, a wave spring 5, a steel plate 6, a friction plate 7, Retaining ring 8, friction hub 9, return spring 10, return spring seat 11, 0 rubber seal 12, snap ring 13, clutch assembly 14, lock nut 15, spacer 16, 0 rubber seal 17 , 0-shaped rubber seal 18, double gear 19, washer 20, needle bearing 21, shaft 22, check valve ball is loaded into the clutch piston, 0-shaped rubber seal 4 and 0-shaped rubber seal 12 are loaded In the groove of the clutch piston, the clutch piston assembly is loaded into the bottom of the clutch drum, and the return spring and the return spring seat are placed to clamp the snap ring on the clutch drum. The wave spring is placed in the groove of the piston surface, and the steel piece and the friction plate and the friction hub are sequentially loaded into the steel plate, and a total of three steel pieces and four friction plates are inserted into the clutch drum ring groove, wherein the steel piece is coupled with the clutch drum. . The clutch assembly is mounted on the shaft, placed in the washer 16, fixed to the shaft by a lock nut 15, the washer 20 and the needle bearing 21 are sleeved on the shaft, and the small end of the double gear 19 is connected to the friction plate 7. The double gear 19 is supported on the needle bearing 21. The wave spring acts as a buffer to prevent the hydraulic clutch from rushing. The check valve speeds up separation and lubrication when separated. The hydraulic clutch piston 2 automatically compensates for the clearance under the action of hydraulic pressure. The clutch is mounted in the crankcase of the engine and the clutch drum is fixed to the shaft. The power is transmitted from the double gear, passing through the friction plate and the steel piece, and is transmitted from the hydraulic clutch drum through the shaft.
Claims
1. 一种多片液压离合器， 其特征是单向阀球安装在离合器活塞中， 0形橡胶密 封圈安装在离合器活塞的槽中， 离合器活塞设置在离合器鼓的底部， 回位弹 簧安装在回位弹簧座上，卡环卡在离合器鼓上，波形弹簧安装在活塞面槽中， 钢片和摩擦片安装在离合器活塞上， 交替安装在离合器鼓中， 摩擦毂安装在 最后一片摩擦片上面， 挡圈卡入离合器鼓环槽内， 钢片与离合器鼓联接， 离 合器总成装在轴上， 用锁紧螺母把其固定在轴上， 滚针轴承套在轴上， 双联 齿轮小端与摩擦片连接， 双联齿轮支撑在滚针轴承上。 A multi-plate hydraulic clutch characterized in that a one-way valve ball is mounted in a clutch piston, a 0-shaped rubber seal ring is mounted in a groove of a clutch piston, a clutch piston is disposed at a bottom of the clutch drum, and a return spring is mounted back On the spring seat, the snap ring is stuck on the clutch drum, the wave spring is installed in the piston face groove, the steel plate and the friction plate are mounted on the clutch piston, and are alternately installed in the clutch drum, and the friction hub is mounted on the last friction plate. The retaining ring is snapped into the clutch drum ring groove, the steel piece is coupled with the clutch drum, the clutch assembly is mounted on the shaft, and the lock nut is fixed on the shaft, the needle bearing is sleeved on the shaft, and the double gear small end is The friction plates are connected and the double gears are supported on the needle bearings.
2. 根据权利要求 1所述的多片液压离合器，其特征是摩擦片和钢片为多片式。 2. The multi-plate hydraulic clutch of claim 1 wherein the friction plate and the steel sheet are multi-piece.
3. 根据权利要求 1所述的多片液压离合器，其特征是离合器安装在发动机曲轴 箱内， 离合器鼓固定在轴上。
3. The multi-plate hydraulic clutch of claim 1 wherein the clutch is mounted in an engine crankcase and the clutch drum is fixed to the shaft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200553335U CN201031889Y (en) | 2006-02-22 | 2006-02-22 | Multi-plate hydraulic clutch |
| CN200620055333.5 | 2006-02-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007095825A1 true WO2007095825A1 (en) | 2007-08-30 |
Family
ID=38436931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2007/000053 WO2007095825A1 (en) | 2006-02-22 | 2007-01-08 | Hydraulically actuated multi-disc clutch assembly |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201031889Y (en) |
| WO (1) | WO2007095825A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196916A (en) * | 2014-08-26 | 2014-12-10 | 广西柳工机械股份有限公司 | Oil charge buffering device of hydraulic gear-shifting gearbox clutch |
| CN104930075A (en) * | 2015-06-17 | 2015-09-23 | 王迪蔚 | Automobile clutch |
| GB2574263B (en) * | 2018-06-01 | 2020-09-30 | Caterpillar Sarl | Disconnect clutch |
| JP2020197274A (en) * | 2019-06-05 | 2020-12-10 | 本田技研工業株式会社 | Reuse determination method for multiple-disc clutch |
| CN110259846A (en) * | 2019-06-22 | 2019-09-20 | 杭州前进齿轮箱集团股份有限公司 | A kind of anti-loose axial stop device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3190421A (en) * | 1963-05-17 | 1965-06-22 | Ford Motor Co | Fluid clutch with cushioned engagement |
| US3285379A (en) * | 1964-10-21 | 1966-11-15 | Ford Motor Co | Fluid pressure clutch with spring cushion |
| US3814226A (en) * | 1973-03-19 | 1974-06-04 | Gen Motors Corp | Clutch piston assembly having unitary elastomeric cushion ring and lip seal |
| US3841452A (en) * | 1973-07-26 | 1974-10-15 | Gen Motors Corp | Friction plate assembly |
| JP2003247564A (en) * | 2002-02-27 | 2003-09-05 | Honda Motor Co Ltd | Hydraulic multi-disc clutch device |
| CN2628798Y (en) * | 2002-05-15 | 2004-07-28 | 重庆大学 | Hydraulic automatic clutch for motorcycle |
| EP1589247A1 (en) * | 2004-04-22 | 2005-10-26 | Zf Friedrichshafen Ag | Damping element for a hydraulically actuated shifting device of a transmission shiftable under load. |
-
2006
- 2006-02-22 CN CNU2006200553335U patent/CN201031889Y/en not_active Expired - Fee Related
-
2007
- 2007-01-08 WO PCT/CN2007/000053 patent/WO2007095825A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3190421A (en) * | 1963-05-17 | 1965-06-22 | Ford Motor Co | Fluid clutch with cushioned engagement |
| US3285379A (en) * | 1964-10-21 | 1966-11-15 | Ford Motor Co | Fluid pressure clutch with spring cushion |
| US3814226A (en) * | 1973-03-19 | 1974-06-04 | Gen Motors Corp | Clutch piston assembly having unitary elastomeric cushion ring and lip seal |
| US3841452A (en) * | 1973-07-26 | 1974-10-15 | Gen Motors Corp | Friction plate assembly |
| JP2003247564A (en) * | 2002-02-27 | 2003-09-05 | Honda Motor Co Ltd | Hydraulic multi-disc clutch device |
| CN2628798Y (en) * | 2002-05-15 | 2004-07-28 | 重庆大学 | Hydraulic automatic clutch for motorcycle |
| EP1589247A1 (en) * | 2004-04-22 | 2005-10-26 | Zf Friedrichshafen Ag | Damping element for a hydraulically actuated shifting device of a transmission shiftable under load. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN201031889Y (en) | 2008-03-05 |
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