公开(公告)号：US4974704A

公开(公告)日：1990-12-04

申请号：US342671

申请日：1989-04-21

申请人： Steven R. Miller ,  David F. Pedersen

发明人： Steven R. Miller ,  David F. Pedersen

IPC分类号： B62L1/14 ,  F16D55/46 ,  F16D65/14

CPC分类号： B62L1/14 ,  F16D55/46 ,  F16D2127/08

摘要： A self-energizing brake of the disc/rotor or rim type is disclosed which includes opposed rocker arms attached to a frame by a bolt or the like. The rocker arms support brake pads adjacent the disc/rotor or rim. Cantilever arms on each of said rocker arms extend opposite the brake pads and are connected to a pressure actuated cable. The rocker arms also terminate in a housing which is rotatable about the bolt. The housing encloses unitary helical ridges which mate with helical ridges on a cylinder fixedly secured to the frame by the bolt. The housing is axially movable relative to the bolt. The housing is sealed about the bolt by O-rings and contains a lubricant such as grease. When force is applied to the cable, the pads contact the rotating rim. Such rotation results in movement of the housing in an axial and rotational direction which, due to the interaction of the helical ridges, multiplies the force exerted on the rim by the brake pads. Release of the force on the cable results in a release of the force created by the interaction of the helical ridges and removes the force from the pads, thereby releasing braking action. A spring may be used to assist the release action and provide running clearance between the rim and the pads when the brake is released.

摘要翻译： 公开了一种盘/转子或轮辋类型的自增力制动器，其包括通过螺栓等附接到框架的相对的摇臂。 摇臂支撑靠近盘/转子或轮辋的制动片。 每个所述摇臂上的悬臂相对于制动垫延伸并连接到压力驱动缆索。 摇臂也终止在可围绕螺栓旋转的壳体中。 壳体包围单一的螺旋脊，其与通过螺栓牢固地固定在框架上的圆柱上的螺旋脊相配合。 壳体可相对于螺栓轴向移动。 外壳通过O形圈围绕螺栓密封，并含有润滑剂如润滑脂。 当力施加到电缆时，垫片接触旋转轮圈。 这种旋转导致壳体在轴向和旋转方向上的运动，由于螺旋脊的相互作用，乘法器将制动片施加在轮缘上的力相乘。 在电缆上的力的释放导致由螺旋脊的相互作用产生的力的释放并且消除来自垫的力，从而释放制动作用。 当释放制动器时，可以使用弹簧来帮助释放动作并且在轮辋和垫之间提供行驶间隙。