Disc brake

Provided is a disc brake for which the ease when assembling a friction pad on a mounting member can be improved. The ear sections (7B, 7C) of a friction pad (6) are inserted in a pad guide (3) of a mounting member (2). A side-pressing spring (26) that presses in the rotation direction of a disc (1) is provided on the friction pad (6). Between the mounting member (2) and the friction pad (6), a pad spring (11) is disposed. The pad spring (11) is mounted so as to be able to abut against the pad guide (3) of the mounting member (2) and comprises guide plate sections (15) for guiding the friction pad (6) in the axial direction of the disc (1) and guiding projections (15C) that extend from outer sections (15A) of the guide plate sections (15) outward in the disc axis direction. The guiding projections (15C) are inclined in the disc rotation direction. 提供种动力传递装置，在此动力传递装置中能够根据需要变更反扭矩限制器凸轮操作时的扭矩以及压接触辅助凸轮操作时的扭矩，并且在使压接触辅助凸轮的凸轮面相互面对并且反扭矩限制器凸轮的凸轮面相互面对的同时地使离合器构件与压力构件满意地相互接合，因此使嘎嘎声最小化。压力构件(5)侧的用于离合器弹簧(10)的接收部包括与压力构件(5)分离的接