A method for providing a clamping force generated by an automatic parking brake includes using a brake motor and a brake piston acting on a brake disk to generate the clamping force. The method guarantees a reliable function of the automatic parking brake even on a loss of clamping force due to a temperature change of the brake disk. The method also minimizes the load on components of the automatic parking brake. After a completed application of the automatic parking brake, a secondary application process is carried out as a function of an activation reaction of the brake motor.

A hydraulic and electromechanical service and parking disc brake may have a service braking system, having at least one hydraulic actuator, a parking braking system having at least one electromechanical actuator transmission irreversibility, a control system connected to the service braking system and to the parking system and a user interface. A translational member of the electromechanical actuator is restrained to be rotationally integral with respect to the caliper via an anti-rotation shape coupling with a guide portion which is integral with the caliper and arranged on a rear side of the translational member, opposite to the free end.

A method for performing a parking brake application process in a motor vehicle with a service brake and a parking brake includes combining a hydraulic force component and a mechanical force component to obtain a total clamping force for the parking brake application process. The two force components are combined in each parking brake application process.

An electromechanical drum brake comprises two brake segments intended to come into contact with a drum, and at least one actuator configured to apply the segments against the drum, and an electric motor configured to activate the actuator, the actuator comprising at least one member which is movable upon activation of the actuator, the movable member being movable between a braking position and a position beyond a release position, in which the segments are no longer in contact with the drum. The actuator comprises a stop which is arranged only in the actuator and against which the movable element bears when it assumes a position beyond the release position, and the motor powers the actuator until the movable element bears against the stop.

A vehicle brake system, including: a wheel brake device including an actuator including a piston, a working fluid chamber, an electric motor, and a piston moving mechanism; a working-fluid supply device; and a controller configured to execute: a normal brake control to control a hydraulic braking force to a magnitude corresponding to a braking request; and a parking brake control to cause the wheel brake device to be operated as a parking brake, wherein, in the parking brake control, the controller controls the wheel brake device to generate the hydraulic braking force at a start timing of an operation as the parking brake, controls the actuator to perform a lock operation in which the electric motor is operated to move the piston forward in a state in which the hydraulic braking force is generated, and controls the wheel brake device to release the hydraulic braking force after the lock operation.

Disclosed is an electronic parking brake system including an electronic front-wheel parking brake provided on a front wheel side of a vehicle and configured to be operated by a front wheel motor, an electronic rear-wheel parking brake provided on a rear wheel side of the vehicle and configured to be operated by a rear wheel motor, a motor driving device configured to drive at least one of the front wheel motor and the rear wheel motor, and a controller electrically connected to the motor driving device, wherein the controller receives operation mode selection information in which an operation mode for operating at least one of the electronic front-wheel parking brake and the electronic rear-wheel parking brake is selected, and controls the motor driving device to operate at least one of the electronic front-wheel parking brake and the electronic rear-wheel parking brake in response to the operation mode of the received operation mode selection information.

A drum brake apparatus includes a housing; a main braking unit installed on one part of the housing, and driven by a hydraulic pressure and pressing a shoe, during main braking; a parking braking unit installed on the other part of the housing, and driven by an electromotive force of an actuator and pressing the shoe, during parking braking; and a locking member locked to the housing through the actuator and a back plate, and fastening the actuator and the housing to the back plate.

A drum brake apparatus includes a housing; a main braking unit installed on one part of the housing, and driven by a hydraulic pressure and pressing a shoe, during main braking; and a parking braking unit installed on the other part of the housing, and driven by an electromotive force of an actuator and pressing the shoe, during parking braking, the parking braking unit includes a bevel gear section disposed in the housing while having a structure of a bevel gear, and rotated in association with the actuator; and a rod section connected with the bevel gear section, and moved out of the housing in association with the bevel gear section and pressing the shoe.

An electronically controllable brake system for a vehicle includes at least one service brake circuit with service brakes and a service brake control module, wherein a service-brake brake pressure can be fed to the service brakes, and the service-brake control module is designed to generate a service-brake control signal as a function of a braking specification. The service-brake brake pressure can be generated as a function of the service-brake control signal and specified to the service brakes, for the implementation of the braking specification via the at least one service brake circuit, under electrical control by the service-brake control module. The electronically controllable brake system further includes a parking brake circuit with spring-loaded brakes, wherein a parking-brake brake pressure can be fed to the spring-loaded brakes, wherein the parking-brake brake pressure can be generated as a function of the braking specification and specified to the spring-loaded brakes.

Disclosed are an electronic caliper brake and an operation method thereof. The electronic caliper brake includes a carrier on which a pair of pad plates are installed to advance and retreat, a caliper housing slidably installed on the carrier and provided with a cylinder in which a piston is installed to advance and retreat by a braking hydraulic pressure, a hydraulic pressure supply device configured to supply the braking hydraulic pressure to the cylinder, a spindle member installed to penetrate through a rear portion of the cylinder and configured to rotate by receiving a rotational force of an actuator, a nut member configured to advance and retreat depending to the rotation of the spindle member to press and release the piston, and a power transmission device in which an input part is connected to an output shaft of the actuator and an output part is connected to the spindle member, and configured to transmit the rotational force of the actuator to the spindle member.