| 摘要 |
A brake shoe return mechanism (10, 110) is provided for disengaging a brake shoe (26a, 26b) from frictional contact with a rotor disk in a brake assembly for vehicles. The mechanism includes a pin (36, 136) slidably received in a casing (34, 134) that is mounted to the vehicle. The pin (36, 136) is biased by a spring (44,144) to a rear position and is frictionally connected using a retaining washer (58, 158) to the brake shoe (26) to move the brake shoe (26) rearwardly away from the rotor disk (18) when a braking force is removed from the brake shoe (26). Another retaining washer (56,156) is received within the casing and axially movable in a predetermined distance. This retaining washer (56, 156) is also frictionally connected to the pin (36, 136) for permitting the pin (36, 136) freely moving forwardly with the brake shoe (26) during a braking action, but stopping the pin (36,136) in a rearward movement together with the brake shoe (26) except moving together with the retaining washer (56, 156) over the predetermined distance.
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