Electric-motor brake apparatus
AssigneeRobert Bosch GmbH
InventorsGeorg Blosch, Dieter Blattert
Life of this patent
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Abstract
The invention relates to a brake apparatus with an electric service motor, which serves to actuate the brake via an actuating device. To enable setting an air clearance, the apparatus includes a readjuster for setting the air clearance, the brake is actuated with the readjuster and then reversed by a defined length. To realize a parking braking function, the apparatus includes a parking brake that can be repositioned from a released position to a braking position and that acts on the actuating device.
Claims6
A brake apparatus (10) for a vehicle, comprising an actuating device (20) which includes an electric service motor (22) and with which a brake lining (16) can be pressed against a brake body (14), and having a readjuster (48), which has a spindle drive (58) that can be driven by an electric readjusting motor (50) and with which an air clearance between the brake lining (16) and the brake body (14) can be set,
- the actuating device (20) has a roller body ramp mechanism (32), which can be driven by the electric service motor (22) and which converts a limited rotary motion into a linear motion for overcoming the air clearance and pressing the brake lining (16) against the brake body (14), and that with the electric readjusting motor (50), a spindle (56) of the spindle drive (58) disposed between the roller body ramp mechanism (32) and the brake lining (16) can be driven to set the air clearance.
A method for setting an air clearance of a brake apparatus (10) for a vehicle, having an actuating device (20) which includes an electric service motor (22) and with which a brake lining (16) can be pressed against a brake body (14), and having a readjuster (48), which has a spindle drive (58) that can be driven by an electric readjusting motor (50) and with which an air clearance between the brake lining (16) and the brake body (14) can be set, which comprises:
- releasing the brake apparatus (10), activating the readjusting motor (50) to operate the readjuster (48), until the brake lining (16) contacts the brake body (14), and reactivating the readjusting motor (50) to execute a fixed reverse rotary motion.
Dependencies are inferred from the claim text.