摘要:
A hydraulic vehicle brake with a parking brake device, in particular for motor vehicles, includes a brake housing in which a hydraulic service pressure chamber is delimited by a brake piston, wherein hydraulic pressure fluid can be applied to the hydraulic service pressure chamber for carrying out service brake operations so that the brake piston is actuatable along a longitudinal piston axis in order to achieve a braking effect. The parking brake device acts on the brake piston with an actuating device, which actuates a rolling-element ramp-type gear with an electromechanical actuator.In order to achieve a higher rate of overall efficiency as well as a reduced electric energy consumption, a two-step gear is interposed between the electromechanical actuator (7) and the actuating device (4), wherein the first gear step (11, 21, 31) on the inlet side is connected to an output shaft (8) of the electromechanical actuator (7) and the second gear step (12, 22, 32) on the outlet side is connected to the rolling-element ramp-type gear (1, 2, 3).
摘要:
A hydraulic vehicle brake includes a brake housing in which a hydraulic working pressure chamber is delimited by a brake piston, wherein the brake piston, in the applied condition, can be locked by means of a locking device, locking thereof being allowed by a relative movement of a force-transmitting element, wherein an energy accumulator cooperating with the brake piston is provided, which is comprised of a lockable accumulator pressure chamber, an accumulator piston delimiting the accumulator pressure chamber, and at least one spring element being supported on the accumulator piston. To perform a parking brake operation, the locking device is activated in that the force-transmitting element after a hydraulic pressure buildup is arrested by an electromagnetic or electromechanical actuator so that a relative movement between the accumulator pressure chamber and the force-transmitting element is rendered possible.
摘要:
A hydraulic vehicle brake equipped with a parking brake device, in particular for motor vehicles, including a brake housing in which a hydraulic service pressure chamber is delimited by a brake piston, wherein the parking brake device acts on the brake piston and, in the applied condition, can be locked by a locking device, and an energy accumulator cooperating with the brake piston is equipped with at least one integrated spring element. In order to realize a simple and low-cost parking brake function that complies with legal requirements, according to the invention, the parking brake device is operable by a pressure that is introduced into the service pressure chamber and enables charging the energy accumulator.
摘要:
A hydraulic vehicle brake equipped with a parking brake device, in particular for motor vehicles, includes a brake housing in which at least two hydraulic pressure chambers are provided, with a working pressure chamber that is delimited by a brake piston, and a lockable accumulator pressure chamber. A dual bleeder (2) is provided for simultaneously bleeding the two pressure chambers (7, 9). To this end, the dual bleeder (2) includes two elements, a bleeder sleeve (30) and a bleeder screw (31). The bleeder sleeve (30) cooperates with a first sealing seat (35), with the result that a hydraulic connection (29) between the two pressure chambers (7, 9) can be separated, while the bleeder screw (31) cooperates with a second sealing seat (36), with the result that at least one of the two pressure chambers (7, 9) can be connected to the atmosphere.
摘要:
A hydraulic vehicle brake with a parking brake device, in particular for motor vehicles, includes a brake housing in which a hydraulic service pressure chamber is delimited by a brake piston, wherein hydraulic pressure fluid can be applied to the hydraulic service pressure chamber for carrying out service brake operations so that the brake piston is actuatable along a longitudinal piston axis in order to achieve a braking effect. The parking brake device acts on the brake piston with an actuating device, which actuates a rolling-element ramp-type gear with an electromechanical actuator.In order to achieve a higher rate of overall efficiency as well as a reduced electric energy consumption, a two-step gear is interposed between the electromechanical actuator (7) and the actuating device (4), wherein the first gear step (11, 21, 31) on the inlet side is connected to an output shaft (8) of the electromechanical actuator (7) and the second gear step (12, 22, 32) on the outlet side is connected to the rolling-element ramp-type gear (1, 2, 3).
摘要:
The present invention relates to a hydraulic vehicle brake equipped with a parking brake device, in particular for motor vehicles, including a brake housing in which a hydraulic service pressure chamber is delimited by a brake piston, wherein the parking brake device acts on the brake piston and, in the applied condition, can be locked by means of a locking device, and an energy accumulator cooperating with the brake piston is equipped with at least one integrated spring element. In order to realize a simple and low-cost parking brake function that complies with legal requirements, according to the invention, the parking brake device is operable by a pressure that is introduced into the service pressure chamber and enables charging the energy accumulator.