READJUSTMENT DEVICE FOR A DISK BRAKE ACTUATED BY ROTARY LEVER, AND DISK BRAKE HAVING A READJUSTMENT DEVICE OF SAID TYPE

摘要

A readjustment device (10) for readjustment for compensation of friction surface wear of brake pads and brake disk of a disk brake, having a brake-application device (5) and having a brake rotary lever (8), wherein the readjustment device (10) is coupled at the driving side to the brake-application device (5) and at the driven side to a threaded plunger (17) of the brake-application mechanism (12) of the disk brake (1), comprises a readjuster shaft with a readjuster axis (11), the driving element for coupling to a driven element of the brake-application mechanism (12) of the brake-application device (5), wherein, on both sides of the driving element, there is arranged in each case one rolling body arrangement, of which one is in the form of an axial bearing and one is in the form of a freewheel and overload clutch unit, a readjuster driven gear, which is coupled to the freewheel and overload clutch unit, of a coupling mechanism (20) for coupling to the threaded plunger (17) of the brake-application mechanism (12), and a preload spring for generating a preload force of the freewheel and overload clutch device. The readjuster driven gear of the coupling mechanism (20) is formed from at least one first driven gear (161) and at least one second driven gear (162), wherein the at least one second driven gear (162) is arranged so as to be rotatable relative to the at least one first driven gear (161) about the readjuster axis (11).