| 摘要 |
In the case of a partial lining disc brake with brake shoes (9) held and guided in the caliper (19) on both sides of the brake disc (18) and at least one symmetrically arranged pressure plate (2) of trapezoidal cross-sectional area with a rectangular, preferably approximately annular segmental base surface actuated by the piston (1) of the wheel cylinder and acting on the back plate (8) of a brake shoe (9), an annular disc (11) is arranged between the end face of the piston and the one lateral face (15) of the pressure plate (2), which annular disc has a plurality of tongue-shaped retaining elements (4, 5, 6, 7) extending parallel to the piston longitudinal axis (f) both in the direction of the piston (1) and in the direction of the brake pad (9). By means of the retaining elements (4, 7) the annular disc (11) is on the one hand held on the piston (1) and on the other hand connected by means of further retaining elements (5, 6) to the back plate (8) and the pressure plate (2) so that piston (1) and pressure plate (2) form an assembled unit, the weight of the pressure plate (2) being supported on the back plate (8). <IMAGE>
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