A brake apparatus for a vehicle may include: a drive unit configured to generate driving power; a transmission gear configured to be rotated by the driving power transmitted from the drive unit; a piston configured to move forward or rearward in conjunction with the rotation of the transmission gear and press or release a pad in a direction in which the piston moves forward or rearward; a parking gear configured to engage with the transmission gear and rotate in conjunction with the rotation of the transmission gear; and a restriction unit installed to be movable toward the parking gear and configured to restrict the rotation of the parking gear by being inserted into the parking gear during parking braking.

A brake caliper for a disc brake has a caliper body straddling a brake disc. The caliper body has a thrust device housing accommodating a thrust device configured to apply a bias on at least one brake pad to abut the at least one brake pad against braking surfaces of the brake disc. The thrust device is operatively connected to a translating screw nut. The translating screw nut is operatively connected to a worm. The worm is operatively connected to a gearbox and rotatably supported by a screw thrust bearing configured to apply for the worm an axial reaction. At least one part of the gearbox is rotatably supported by at least one gearbox thrust bearing configured to apply for the at least one part of the gearbox a radial reaction. The screw thrust bearing and the gearbox thrust bearing are a same thrust bearing.

An electric drive for an electrohydraulic brake system, having a housing and a stator-rotor unit received by the housing. The stator-rotor unit has a stator with an arrangement of a plurality of magnetizable, pole-forming stator teeth. The stator teeth are subdivided into separate tooth pairs inserted into the housing. Each of the tooth pairs is wrapped with its own common metal wire forming a part of the coil, the two wire ends of which are electrically contacted with a separate housing insert made of plastic, which is joined to the housing and thereby covers the stator-rotor unit. The individual stator teeth are braced against one another in the housing while lying on one another and are braced against the housing.

Disclosed is an electronic parking brake system including an electronic parking brake provided to provide a clamping force necessary for parking a vehicle by a motor, a warning unit provided to warn a failure of the electronic parking brake, a current sensor provided to detect a current of the motor, and a controller electrically connected to the current sensor, wherein the controller determines whether a clamping force is generated depending on the motor current in a parking operation, counts a clamping force non-generation time when the clamping force is not generated, and warns a suspected failure of the electronic parking brake through the warning unit when the clamping force non-generation time elapses a preliminary failure detection time set shorter than a failure detection time of the electronic parking brake.

A brake apparatus for a vehicle may include: a first driver and a second driver each configured to generate a driving force; a transfer gear part rotated by the driving force received from the first driver; a piston part configured to press or release a pad part according to the direction in which the piston part is moved forward or backward; a parking gear part rotated with the transfer gear part; a constraint part moved forward or backward by the driving force of the second driver, and configured to constrain the rotation of the parking gear part by being moved to one side during parking braking; and a locking part configured to transfer the driving force, generated by the second driver, to the constraint part, and to restrict the constraint part from moving to the other side during parking braking.

A brake apparatus for a vehicle may include: a pad unit disposed to face a disc unit; a first caliper body unit fixed to a vehicle body and configured to support the pad unit so that the pad unit is movable; a first pressing unit installed on the first caliper body unit so as to be movable forward or rearward and configured to press the pad unit to apply a main braking force; a second caliper body unit slidably installed on the first caliper body unit; and a second pressing unit installed on the first caliper body unit so as to be movable forward or rearward and configured to press the pad unit to apply a parking braking force together with the second caliper body unit.

The disclosure relates to an actuation device for an electromechanically actuatable motor vehicle brake, for actuating at least one brake lining of the motor vehicle brake. The actuation device comprises at least one drive element, a first power transmission train, a second power transmission train and at least one actuation element. The actuation element is designed to actuate the at least one brake lining. The at least one drive element can optionally transmit drive power to the first power transmission train or to the first and the second power transmission train. The two power transmission trains are operatively connected to the at least one actuation element or can be brought into operative connection therewith.

Provided is an electric brake device including one caliper including at least two electric mechanisms each configured to apply a braking force to a vehicle and to maintain the braking force. The at least two electric mechanisms are to be driven by one drive circuit output, that is, one output from one drive circuit. In this manner, for example, even when it is required to control a large number of electric mechanisms as in a case in which the electric brake device is applied to a twin-bore caliper, the number of drive circuits for driving the electric mechanisms can be reduced, thereby being capable of reducing cost.

A brake caliper for a disc brake system has a caliper body straddling the disc and having a first elongated portion facing a first braking surface of the brake disc, and a second elongated portion, opposite to the first elongated portion and facing a second braking surface of the brake disc opposite to the first braking surface. A bridge connects the first elongated portion and the second elongated portion to each other. The brake caliper has at least one pair of opposite brake pads, each brake pad having friction material and a support plate supporting the friction material, the support plate having a plate back facing a respective elongated portion of the first and second elongated portions. A detecting device for detecting a biasing force directed in axial direction is interposed between the plate back of the second brake pad and the second elongated portion of the caliper body.

A spreader unit for a drum brake is provided with a readjustment device which ensures that the clearance remains substantially constant even in the case of wear on the brake linings. The readjustment device is arranged between actuating pistons and changes the spacing of the actuating pistons in at least one readjustment step when an actuating travel of the first and second brake shoe holders has exceeded a travel setpoint value. A thermally actuable blocking device mechanically prevents the execution of the readjustment step by the readjustment device at a temperature above a temperature setpoint value.