发明名称 |
PARKING BRAKE SYSTEM |
摘要 |
A parking brake system is provided in which a parking brake state is obtained by forward movement of a parking piston (44) slidably fitted into a casing (23) with the rear side of the parking piston (44) facing a parking control fluid pressure chamber (47), and the forwardly moved state of the parking piston (44) is mechanically locked by a lock mechanism (31). An insertion shaft (59) and a casing (23), which form part of the lock mechanism (31), are formed so as to position spheres (58) radially inward when the parking piston (44) is at a retreat limit and position the spheres (58) radially outward when a lock piston (56) moves to a forward position in response to forward movement of the parking piston (44) from the retreat limit, and a plurality of guide grooves extending in the axial direction of the insertion shaft (59) are provided on the outer face of the insertion shaft (59), the guide grooves having a concavely curved cross-sectional shape with a diameter that is equal to or larger than the diameter of the spheres (58). This enables an automatic parking brake state to be obtained by a simple structure without consuming power. |
申请公布号 |
EP1729028(B1) |
申请公布日期 |
2012.03.28 |
申请号 |
EP20050727432 |
申请日期 |
2005.03.28 |
申请人 |
HONDA MOTOR CO., LTD.;NISSIN KOGYO CO., LTD. |
发明人 |
INAGAKI, HIROMI;WATADA, AKIFUMI |
分类号 |
F16D65/18;B60T13/22;F16D65/14 |
主分类号 |
F16D65/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|