Self-amplifying electromechanical partial lining disc brake

摘要

The present invention relates to a self-amplifying electromechanical partial lining disc brake, having a ramp mechanism as a self-amplification device. According to the invention, a rack for driving a friction brake pad is situated between roller elements of the ramp mechanism, particularly at a geometrical centroid of an imaginary surface defined by the roller elements. As a result a load is distributed to the roller elements in a more uniform fashion and the pressing force of the friction brake pad against a brake disc when the partial lining disc brake is actuated is distributed more uniformly and counteracts irregular pad wear.

主权项

1. A self-amplifying electromechanical partial lining disc brake, comprising:
a friction brake pad (14); a brake disc (16); an electromechanical actuating device (36, 38), which presses the friction brake pad (14) against the brake disc (16) to actuate the partial lining disc brake (10); anda self-amplification device equipped with a ramp mechanism (24, 28), the ramp mechanism (24, 28) supporting the friction brake pad (14) in a movable fashion in a circumferential direction and at a ramp angle in relation to the brake disc (16), the self-amplification device converting a friction force exerted by the rotating brake disc (16) on the friction brake pad (14) pressed against the brake disc (16) during braking into a pressing force that presses the friction brake pad (14) against the brake disc (16) in addition to a pressing force exerted by the actuating device (36, 38), the ramp mechanism having three ramps (28) along which roller elements (24) roll and which support the friction brake pad (14), the roller elements (24) being situated at the corners of an imaginary triangle (34), wherein the actuating device (36, 38) exerts a force on the friction brake pad (14) at an angle to the brake disc (16) along a line of action that passes through the imaginary triangle between and apart from the roller elements (24), wherein the ramps (28) have a transverse inclination, and the transverse inclination of a ramp (28) that is spaced a smaller distance apart from the rotation axis of the brake disc (16) is inclined in the opposite direction from the transverse inclination of a ramp (28) that is spaced a larger distance apart from the rotation axis of the brake disc (16).