A method of actuating a clutch in a gearbox

CN120444405BActive Publication Date: 2026-08-28ZHUZHOU GEAR CO LTD
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Patent Information

Application Number
CN202510825426.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-06-19
Publication Date
2026-08-28
Estimated Expiration
2045-06-19

AI Technical Summary

Technical Problem

[0002]汽车AMT减速器中,采用电控机械的自动变速箱,档位切换一般采用滚珠丝杆推动拨叉在拨叉轴上滑动,或拨叉与拨叉轴组件在壳体上的拨叉轴的安装孔内滑动,进而通过装在拨叉上的换挡块带动同步环进行切换,这种换挡方式换挡块与同步环之间存在滑动摩擦,换挡块存在磨损的情况,随着产品使用的时长增加,换挡块磨损加剧,当其磨损达到一定的上限值时,导致换挡块与同步环之间的间隙较大,换挡块移动一个换挡需要的行程时,由于换挡块磨损的影响,同步环实际移动的轴线距离小于换挡行程,影响换挡灵敏度,甚至出现脱档或打齿的情况,导致产品损坏

Benefits of technology

[0015]控制精度高,性能稳定,且轴向推进装置依托输入轴设置,不另占外部空间,总体构造远比液气压缸及其泵压系统简单,从而简单可靠的解决了变速箱换挡离合机构的离、合执行问题。

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Abstract

The application discloses a pushing mechanism for pushing clutch to separate in a gearbox, which comprises an axial pushing device, a turbine worm device and a driving motor. The axial pushing device is arranged on an input shaft and comprises a ring-shaped pushing disc sleeved on the input shaft adjacent to the clutch. The ring-shaped pushing disc can be axially pushed on the input shaft while rotating around the input shaft. The turbine worm device comprises a ring-shaped turbine fixed around the outer periphery of the ring-shaped pushing disc and a worm with one end engaged with the ring-shaped turbine and the other end connected with the driving motor. In use, the ring-shaped pushing disc is driven to rotate by the driving motor through the turbine worm device, so that the ring-shaped pushing disc is pushed to the clutch to make the clutch close or the ring-shaped pushing disc is retracted to make the clutch separate. The pushing mechanism has the advantages of high control precision, stable performance, no additional external space occupied by the axial pushing device depending on the input shaft and simple overall structure compared with a hydraulic cylinder and a pump pressure system.
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Citation Information

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