| 摘要 |
<p>A disc brake assembly (10) includes a stationary member (12), a rotating member (14) defining an axis of rotation (20), a plurality of stationary discs (28) spaced axially along the axis of rotation within the stationary member, and a plurality of movable discs (30) interspaced with the stationary discs. A brake coupler (24) supports the movable discs. During non-braking vehicle operation, the movable discs and the brake coupler remain stationary relative to the stationary discs. During a braking maneuver, the coupler couples the movable discs to the rotating member such that the movable discs are caused to rotate with respect to the stationary discs. Once the coupler and rotating member are interconnected a piston (60) moves the stationary and movable discs together to reduce rotation of the rotating member and brake the vehicle. Once the braking maneuver is completed, a first return spring moves the stationary and movable discs apart and a second spring (38) disengages the coupler from the rotating member to return the movable discs to their original position. This eliminates undesirable drag that occurs between stationary and rotating discs in a disc brake during non-braking vehicle operation. <IMAGE></p> |
