An electro-hydraulic brake system may include a brake input device manipulated by a driver to brake a vehicle, a brake input detecting sensor configured to detect a brake input value of the driver through the brake input device, a pressure generating device configured to generate a brake hydraulic pressure, a wheel cylinder configured to receive the brake hydraulic pressure generated from the pressure generating device and to generate braking power for braking rotations of each vehicle wheel, a hydraulic pressure supply line connected between the pressure generating device and the wheel cylinder to transfer the brake hydraulic pressure generated from the pressure generating device to each wheel cylinder, and a controller configured to output a control signal for controlling an operation of the pressure generating device to allow the pressure generating device to generate a target brake hydraulic pressure based on a signal of the brake input detecting sensor.

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 electromechanical brake pressure generator for a hydraulic braking system of a vehicle. The electromechanical brake booster includes at least one gear for transferring a torque of the electric motor for brake pressure generation. The gear in this case includes a planetary carrier for supporting planetary wheels, planetary wheels pins which are connected to the planetary carrier and on which the planetary wheels are rotatably fastenable, and a pinion for transferring a drive torque or output torque, which is rotatably fixedly connected to the planetary carrier at a side thereof opposite the planetary wheel pins. At least the part of the planetary carrier that includes the planetary wheel pins is materially integrally formed with the latter from the same material.

An actuation system, in particular for a vehicle brake, may include an actuating device, such as a brake pedal, at least one first pressure source, e.g., a piston-cylinder unit (master cylinder), which can be actuated in particular by means of the actuating device and a second pressure source, in particular a piston-cylinder unit, with an electro-mechanical drive. The pressure sources may each be connected to at least one brake circuit via a hydraulic line, in order to supply the brake circuit with pressurising medium and to pressurise the vehicle brake. There may further be a valve device for regulating the brake pressure. It is planned that during forward and return stroke at least one brake circuit can be fed controlled pressurising medium by way of the second pressure source.

A brake assembly has a brake disc in rotational engagement with a wheel of a vehicle, a brake pad which frictionally engages the brake disc when an actuator force is applied thereto, an actuator having an output shaft driven in a forward direction and a reverse direction in order to bring the brake pad and brake disc into the frictional engagement, and an energy absorption and/or storage unit. The energy absorption and/or storage unit absorbs forces acting on the output shaft in the reverse direction in case of a predetermined operation situation.

The invention relates to an autonomous retarder system for a vehicle including a retarder (10) having a central rotor (11) and two stators (12), one on each side of the rotor (11). The rotor (11) is rigidly coupled to an axle (1). A generator (20, 30, 50) is also included, coupled to the retarder (10), for supplying same with electrical energy. In addition, the generator (20, 30, 50) comprises a stator (22) and a rotor (21, 31, 51) coupled to the retarder.

Provided is a vehicle brake system equipped with an electric brake and which has high reliability and enables redundancy at low cost. This vehicle brake system 1 is equipped with a mutually connected master controller 30 and first and second sub-controllers 40, 41, and an output cut-off control unit 200. Each of the controllers includes: a braking force calculation section for calculating the braking force of the electric brake; a self-determination section for determining whether or not the controller itself is normal; and an other-determination section for comparing the braking force calculation results of the controllers to determine whether the other two are normal. Upon determining that the master controller is not normal, the output cut-off control unit cuts off the output of the master controller, the determination being made on the basis of the self-determination result made by the master controller, the self-determination result and determination result regarding the master controller made by the first sub-controller, and the self-determination result and determination result regarding the master controller made by the second sub-controller.

Provided is a vehicle brake system equipped with an electric brake and which has high reliability and enables redundancy at low cost. This vehicle brake system 1 is equipped with a mutually connected master controller 30 and first and second sub-controllers 40, 41, and an output cut-off control unit 200. Each of the controllers includes: a braking force calculation section for calculating the braking force of the electric brake; a self-determination section for determining whether or not the controller itself is normal; and an other-determination section for comparing the braking force calculation results of the controllers to determine whether the other two are normal. Upon determining that the master controller is not normal, the output cut-off control unit cuts off the output of the master controller, the determination being made on the basis of the self-determination result made by the master controller, the self-determination result and determination result regarding the master controller made by the first sub-controller, and the self-determination result and determination result regarding the master controller made by the second sub-controller.

The present disk brake includes a braking force holding mechanism configured to restrict a rotation of a rotational shaft (a ratchet gear) to hold a braking force based on driving of a solenoid actuator. The braking force holding mechanism includes a holding member configured to move based on the driving of the solenoid actuator to restrict the rotation of the ratchet gear, and an engagement member coupled with this holding member. The engagement member is rotatably supported on a gear housing portion, and is configured to prohibit a movement of the holding member. Due to this configuration, an excitation force applied from outside to the holding member can be canceled out with the aid of the engagement member, and thus the disk brake can realize a size reduction and achieve cost saving.

A brake system for a vehicle, including: a brake operation member; a hydraulic brake device configured to give a braking force based on an operation of the brake operation member; an electric brake device configured to give a braking force generated by an electric actuator; a regenerative brake device configured to give a braking force utilizing electric power generation by rotation of a wheel, and a controller configured to determine insufficient braking force by excluding the braking force by the hydraulic brake device from a required overall braking force required for the vehicle as a whole and to control the braking force by each of the electric brake device and the regenerative brake device based on the insufficient braking force, wherein the brake system is configured such that the hydraulic brake device gives the braking force when the required overall braking force exceeds a threshold.