| 摘要 |
1. A disc brake for a vehicle, comprising at least one friction member (18, 20) of which the circumferential ends (42, 44) are slidably received and anchored by a torque absorbing member (10), operating means (28, 30) being associated with the latter to urge the friction member (18, 20) into braking contact with a corresponding side (22, 24) of a brake disc (12), at least a first one (42) of the circumferential ends (42, 44) of the friction member (18, 20) comprises at least one rounded surface (46) slidable on and capable of anchoring on a corresponding rounded surface (50) defined on the torque-absorbing member (10) one of the said rounded surfaces (50) being concave and the other rounded surface (46) bein convex, characterized in that the radius of curvature of convex surface (46) is smaller that the radius of curvature of the concave surface (50), said friction member being received with predetermined circumferential clearance (B) in the torque-absorbing member (10), so that the friction member (18, 20) can occupy a first and a second circumferential limit position corresponding to anchoring of the friction member (18, 20) on the torque-absorbing member (10) by way its first (42) or second (44) circumferential end respectively, depending on the direction of disc rotation, resilient means (54) being provided to urge the friction member (18, 20) away from the first circumferential limit position and into permanent contact with the rounded surface (50) defined on the torque-absorbing member (10). |
