| 摘要 |
<p>A self-energising disc brake of the spreading type is adapted to be actuated for normal service braking by an hydraulic acutator (22) which is located within the housing (4) of the brake. The actuator (22) comprises a cylinder (24) having a bore in which work a pair of pistons (26, 27) for engagement with lugs (28, 29) on the pressure plates (5, 6), and the axis (27) of the bore is tangential to the plates and the line of action of the force from the pistons to the lugs lies in a plane which is angled with respect to a transverse plane parallel to the plane of each plate. This can be achieved by angling the axis of the bore or the abutment faces (70,71) on the lugs. The degree or extent ( theta e) by which the actuator is angled may be matched to the inclination ( theta r) of ramps (11) defined by the edges of recesses (3) in the plates in which camming balls (10) are housed.</p> |
