Lucas Industries Public Limited Company

Lucas Automotive Gmbh

Manfred Meyer

Gregor Poertzgen

Ralf Leiter

Leo Gilles

Ralf Erben

Marcus Janson

Karl-Heinz Schaust

In a vehicle brake having a brake piston accommodated in a housing, a blocking device for securing the brake piston inside the housing and an actuating device for controlling the blocking device, it is provided that the brake piston together with the housing delimits a fluid chamber, which is chargeable with hydraulic fluid, so that the brake piston for actuating the vehicle brake is displaceable hydraulically inside the housing along a piston longitudinal axis, that moreover the blocking device comprises a ramp arrangement and a blocking element that is displaceable relative to the housing, and that by means of the actuating device the blocking element in interaction with the ramp arrangement for securing the brake piston inside the housing is displaceable and connectable to the brake piston. In this vehicle brake, it is further provided that the actuating device comprises a motor drive, which is drive-connected to the ramp arrangement, wherein the blocking element upon activation of the motor drive is displaced to secure and release the brake piston inside the housing.

Hydraulically actuable vehicle brake

A shaft (34) is supported in the bottom (22) of a casing (20) and is rotatable for mechanical brake application. A ramp assembly (40) which is fixed to the casing and designed as an annular plate is supported on the bottom (22) around the shaft (34) and prevented from rotating by an off-center twist stop (42), and it is centered in the casing (20) in a way bypassing the shaft (34). Moreover, a rotatable ramp assembly (50) is arranged inside the casing (20) so as to be axially displaceable and is connected to the shaft (34) for torque transmission. The rotatable ramp assembly (50) is supported in such manner on the ramp assembly (40) which is fixed to the casing that it converts torque applied to it by the shaft (34) into an axial actuating force (B).

Actuator for a vehicle brake, especially a disc brake

Actuating device with automatic readjustment for a vehicle brake

Growing community of inventors

Gillenfeld, Germany

Manfred Meyer