| 摘要 |
<p>A spot-type disc brake for automotive vehicles, having brake shoes arranged on both sides of a brake disc. A brake support member receives the brake torque. The support member bears guide rods in which a brake caliper which straddles the brake disc is guided slidably on the brake support member. The brake caliper is provided with an actuating device to urge the brake shoes against the brake disc. The brake caliper is resiliently preloaded in the brake's release direction and with the spring force being maintained constant independently of the pad thickness by the position of a friction element that is slidably supported at the brake support member. After braking actions that result in an elastic expansion of the brake caliper, there is available a sufficient brake clearance immediately upon termination of the braking action, by the use of the friction element being arranged in a sleeve to allow axial movement by the amount of the clearance. The sleeve provides for the guiding of the brake caliper such that the brake caliper is movable an additional length in the brake's release direction, which latter length corresponds at least to the potential elastic expansion of the brake caliper.</p> |
