Disc brake assembly.

摘要

In a disc brake assembly including a caliper member (30) mounted on a vehicle body structure in such a manner as to straddle a portion of a rotary brake disc (20) secured for a road wheel, a friction pad (50) supported on the caliper member by means of a pair of hanger pins (41,42) to be moved toward and away from one side surface of the brake disc (20) for engagement therewith and disengagement therefrom, the friction pad (50) having a backing plate (52) secured thereto to be engaged at one side end face thereof with a torque receiving portion (30b) of the caliper member (30) in braking operation and a fluid actuator (33) mounted within the caliper member (30) to press the friction pad (50) against the one side surface of the brake disc (20), a side projection (53a3,52c,30b1,30c1) is provided on at least an upper or lower portion of the one side end face of the backing plate (52) for engagement with the torque receiving portion (30b) of the caliper member (30) or on at least an upper or lower portion of the torque receiving portion (30b) of the caliper member for engagement with the one side face of said backing plate (52). The side projection (53a3,52c,30b1,30c1) is arranged to apply a rotational force to the backing plate (52) in a rotational direction of the brake disc (20) when engaged with the torque receiving portion (30b) of the caliper member (30) or engaged with the one side end face of the backing plate (52). <IMAGE>