An actuator for an electric parking brake system includes an outer housing, a motor, a planetary gear mechanism and a belt-wheel mechanism that are received in the outer housing, and an isolation member. The belt-wheel mechanism includes a driving wheel, a follower wheel, and a transmission belt. The driving wheel is connected with the motor. The follower wheel is connected with the planetary gear mechanism. The isolation member has a first spacer fixed to the driving wheel via the motor, a second spacer fixed to the follower wheel, and a buffering element disposed between the second spacer and the outer housing. The second spacer is disposed above and assembled to the first spacer. The isolation member defines the center-to-center distance between the driving wheel and the follower wheel, and absorbs vibrations from the motor and the planetary gear mechanism.

An object of the invention is to provide a disc brake improved in reliability.

In a disc brake, a first holder-side projection is formed on a holder, and a first cover-side recess that fits the first holder-side projection of the holder is formed in a cover. An elastic member is disposed between the first holder-side projection of the holder and the first cover-side recess in the cover.

The invention relates to a motor vehicle actuator, in particular a brake actuator, comprising a housing (3) which consists of a housing container (1) and a housing cover (2) designed as a base support, and in which an electric motor (4) and a transmission (6) coupled to the electric motor via a torque transmitting device (5) are arranged. A retaining frame which can be arranged on the housing cover (2) is provided in order to arrange the electric motor (4) within the housing (3). The invention is characterized in that the holding frame (7) is designed as a damping and/or spring device.

Provided is an actuator including: a motor; a brake; a motor casing that accommodates a constituent member of the motor; and a brake casing that accommodates a constituent member of the brake. The motor casing and the brake casing are connected to each other, the brake includes a stator having a coil and a coil case, and a friction plate, a minimum outer diameter of the coil case is 70 mm or less, and a value obtained by dividing a distance from a first end surface of the friction plate on a side farthest in an axial direction from the coil case to a second end surface of the coil case on a side opposite to the first end surface by the minimum outer diameter is 0.2 or less.

A subassembly for an electromechanical brake actuator and electromechanical brake actuator comprising the subassembly, wherein the subassembly comprises a drive device for generating a torque and a gear mechanism for transmitting the torque, the gear mechanism comprising, one behind the other, a first, a second and a third gear stage. The second gear stage is configured as a planetary gear set.

An electric linear motion actuator includes an electric motor, a motion conversion mechanism for converting the torque of the electric motor to the linear driving force of an outer ring member, a load sensor, and a motor control device. The motor control device is configured to control the electric current applied to the electric motor such that the torque of the electric motor increases until the pressing force detected by the load sensor exceeds a target value, and then the torque of the electric motor decreases until the pressing force detected by the load sensor reaches the target value.

An electric brake for a wheel rotor having a brake pad includes a housing with a passage. A piston assembly in the passage includes a spindle and a piston. The spindle is rotatable to cause the piston to move axially relative to the brake pad. A drive assembly includes a motor. A gear train is connected to the motor and the spindle. A coupling mechanism is coupled to the gear train and has a first condition enabling torque transmission from the motor to the spindle to axially move the piston to apply braking force to the brake pad. The coupling mechanism has a second condition disabling torque transmission from the motor to the spindle is prevented which permits the piston to retract and reduce the braking force on the brake pad without stopping or reversing the motor.

A disk brake allowing a connector terminal (255) and a joining terminal (256) to be easily positioned in a width direction thereof and a direction toward an opening portion of a housing, because the joining terminal fixed to one end of a harness includes individual protruding portions (265) and a pair of biasing portions (264). Further, due to each of the biasing portions, the connector terminal and the joining terminal can be brought into close contact with each other. Further, due to the protruding portions of the joining terminal, an end (258A) of the connector terminal and an end (268A) of a contact surface portion (263) can be brought into alignment with each other, which facilitates formation of such a welded portion (266) that extends over the respective ends, and thus achieves a secure connection between the connector terminal and the joining terminal

A mechanical linear actuator in an aircraft brake may include a ball nut, a ball screw, and an actuator drive unit housing. The ball screw may rotate to drive the ball nut axially. The ball screw and the actuator drive unit housing may form a series of annular raceways. The ball screw may have a first window corresponding to a first raceway and a second window corresponding to a second raceway. Balls may be inserted into the first raceway through the first window and into the second raceway through the second window.

An electric brake caliper, including: a caliper main body; brake pads; and an actuator including a piston, an electric motor of a rotary type, and a motion converting mechanism, wherein the motion converting mechanism includes a hollow output sleeve configured to be linearly moved to move the piston disposed at one end of the output sleeve nearer to the one of the brake pads and an input shaft disposed in the output sleeve and configured to be rotated by the electric motor, the motion converting mechanism being configured to convert rotation of the input shaft into a linear movement of the output sleeve, wherein the electric motor includes a hollow driving rotary shaft, and wherein the motion converting mechanism is disposed in the driving rotary shaft, and the input shaft includes a flange whose outer circumferential end is in mesh with an inner circumferential portion of the driving rotary shaft.