A disk brake that includes, between an internal gear (69) and a first housing portion (19) of a housing (18), each of protrusion portions (105) provided on the internal gear side and engagement recessed portions (44) provided on the first housing side that are engaged with each other to restrict a relative rotation. Each of these protrusion portions on the internal gear side and engagement recessed portions on the first housing portion side are disposed along a direction perpendicular to a straight line connecting a radial center of a second speed reduction gear (67) and a radial center of a first speed reduction gear (54). Due to this configuration, the disk brake can improve the precision of the position of the internal gear of the planetary gear speed reduction mechanism (27) while reducing the cost.

The disclosure relates to an electromechanical brake for a motor vehicle. The electromechanical brake comprises an actuating piston which is set up to be moved translationally in a direction of a piston axis in order to actuate at least one brake shoe. The electromechanical brake also comprises a brake carrier having a gas-containing piston chamber in which the actuating piston is received such that it can be moved translationally in a direction of the piston axis. Furthermore, the electromechanical brake comprises an electric motor for driving the actuating piston. In the case of the electromechanical brake, a venting device is provided, which is set up to vent the piston chamber with respect to an exterior. The disclosure also relates to a disc brake, to a brake system, and to a motor vehicle.

Disclosed herein an electric parking brake includes a pair of pressing portions provided in a caliper housing to convert rotational motion into linear motion to press a brake pad; an actuator configured to transmit power to the pair of pressing portions; and a load control portion provided rotatably between the pair of pressing portions and the actuator, the load control portion applying a uniform load to the pair of pressing portions by pressing any one of the pair of pressing portions that generates a less load during braking operation.

An electric brake actuator includes a housing, a three-stage planetary gear mechanism provided in the housing, the planetary gear mechanism having a first stage, a second stage, and a third stage that are sequentially meshed from one end to the other end of the planetary gear mechanism, and each stage of planetary gear mechanism comprising at least one planet gear, and a planet carrier supporting the planet gear; a motor provided in the housing; and at least one gear connected between the planetary gear mechanism and the motor, the at least one gear being arranged the motor to drive the planetary gear mechanism. The at least one planet gear of the first stage is made of a first material that is different from a second material of which the planet gear of the second stage or the planet gear of the third stage is made.

The electric brake motor unit has: a motor; a connector having a connector terminal; a first section extending in a first direction and having a first contact portion electrically connected to the connector terminal; a second section extending in the first direction and having a second contact portion electrically connected to a motor terminal; and an intermediate section extending in a second direction intersecting with the first direction between the first section and the second section. The electric brake motor unit is provided with: a bus bar in which the first section, the intermediate section, and the second section are connected in a crank shape; and a motor bracket mounted on the motor and having two positioning portions that are mutually separately positioned with a space through which the intermediate section passes and are used for positioning the intermediate section in the first direction.

In an electric linear motion actuator, while an axially forward load is not being applied to an object by an outer ring member, a preload is applied to a frictionally coupling surface by an elastic member, and, when the axially forward load is applied to the object by the outer ring member, an axial load applied to the frictionally coupling surface decreases by an amount equal to the axially rearward reaction force which the outer ring member receives from the object. The electric linear motion actuator includes a load sensor for supporting, through planetary rollers and a carrier, the axially rearward reaction force. The load sensor is arranged such that any change in magnitude of an axially forward load applied through a snap ring will not affect the value of the axially rearward reaction force detected by the load sensor.

A vehicle brake pedal booster pushrod interface assembly is provided that includes: a pivotable brake pedal arm including a protruding peg structure; and an elongate pushrod including a clip structure disposed at one end thereof and adapted to pivotably engage the protruding peg structure of the pivotable brake pedal arm. The brake pedal booster pushrod interface assembly further includes a cylindrical sleeve adapted to be rotatably disposed about the protruding peg structure of the pivotable brake pedal arm and be pivotably engaged by the clip structure of the elongate pushrod. Optionally, the cylindrical sleeve includes an opposed conical section disposed at either end thereof and separated by a cylindrical center portion. The clip structure of the elongate pushrod includes a pair of arms defining an opening and an interior space adapted to receive the protruding peg structure of the pivotable brake pedal arm.

Actuators can include a line replaceable brake unit including a window for inspecting brake elements. In particular, an actuator system includes a modular brake component having an integral brake housing configured to mount to a motor, wherein the integral brake housing is environmentally sealed; a drive coupling within the integral brake housing configured to mechanically couple with an output shaft of the motor; one or more braking disks arranged in the integral brake housing configured to brake movement of the drive coupling when engaged; an armature in the integral brake housing configured to engage or disengage the one or more braking disks with the drive coupling; and an inspection window through the integral brake housing aligned with at least a portion of the one or more braking disks. A method for implementing an actuator system is disclosed as well.

A brake component mounting structure for a thin-wall axle of a heavy-duty vehicle including a mounting plate and a brake component bracket. The brake component bracket is attached to and extends from the mounting plate. The mounting plate has at least one continuous edge attached by a continuous weld to the axle.

The electric brake motor unit has: a motor; a connector having a connector terminal; a first section extending in a first direction and having a first contact portion electrically connected to the connector terminal; a second section extending in the first direction and having a second contact portion electrically connected to a motor terminal; and an intermediate section extending in a second direction intersecting with the first direction between the first section and the second section. The electric brake motor unit is provided with: a bus bar in which the first section, the intermediate section, and the second section are connected in a crank shape; and a motor bracket mounted on the motor and having two positioning portions that are mutually separately positioned with a space through which the intermediate section passes and are used for positioning the intermediate section in the first direction.