| 摘要 |
A disc brake (110) for use in a brake system of a vehicle. The disc brake (110) has a caliper (16) which retains first (130) and second (132) brake pad assemblies in alignment with corresponding first (134a) and second (134b) braking surfaces on a rotor (134). In response to hydraulic fluid being supplied to an actuation chamber (18) in the caliper (16), the first (130) and second (132) brake pad assemblies are moved into engagement with the first (134a) and second (134b) braking surfaces to retard the rotation of the rotor (134) and effect a brake application for the vehicle. The disc brake (110) is characterized by the first (134a) and second (134b) braking surfaces on the rotor (134) having a radial concave shape while the first and second friction member of the first (130) and second brake pad assemblies respectively have corresponding surfaces (131,133) with a radial convex shape. The radial convex shape being complementary to the radial concave shape such that on engagement during a brake application, the first (130) and second (132) brake pad assemblies are retained in a substantially uniform arcuate location(R) about an axis of rotation of the rotor (134).
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