Wedge cam brake
2016
A wedge cam brake wherein a ball screw (13), which is screwed into a ball nut (38) to which a wedge cam (20) is integrally provided, is rotationally driven, thereby moving the wedge cam (20) along the direction of the rotational axis of the ball screw (13) to a braking position and, by means of the cam operation of the wedge cam, the base ends of brake arms (3) perform a braking operation while clamping a pair of pad assemblies (6, 6) from both sides of a brake rotor (100). The wedge cam brake is equipped with compression coil springs (17) for pressing and biasing the ball nut (38) toward the braking position, where the wedge cam (20) opens the base ends of the brake arms (3), and a spring-holding mechanism (30) that holds the compression coil springs (17) in an energy-storing state.
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