Mando Corporation

Other

Sung-Wook Yu

Jong-Gu Son

Disclosed is an electronic disc brake. The electronic disc brake includes a disc configured to rotate with vehicle wheels, a caliper housing configured to operate pad plates installed at both sides of the disc, and an actuator having a piston provided inside the caliper housing to press the pad plates to adhere the pad plates to the disc, a spindle rotatably installed at the caliper housing to reciprocate the piston, an electric motor configured to rotate the spindle, and a decelerator configured to transmit a rotational force of the electric motor to the spindle, wherein the decelerator includes a power connection unit connected to the electric motor, planetary gear units configured to connect the power connection unit to the spindle, and a center pin configured to pass through the power connection unit and the planetary gear units, and the center pin is fitted into the power connection unit and the planetary gear units to be rotatable relative thereto.

Electronic disc brake

Disclosed is an electronic disc brake. The electronic disc brake includes a disc configured to rotate with vehicle wheels, a caliper housing configured to operate pad plates installed at both sides of the disc, and an actuator having a piston provided inside the caliper housing to press the pad plates to adhere the pad plates to the disc, a spindle rotatably installed at the caliper housing to reciprocate the piston, an electric motor configured to rotate the spindle, and a decelerator configured to transmit a rotational force of the electric motor to the spindle. The decelerator includes a power connection unit connected to the electric motor, planetary gear units configured to connect the power connection unit to the spindle, and a center pin configured to pass through the power connection unit and the planetary gear units. The power connection unit includes a driving gear provided at a shaft of the electric motor and a driven gear connected to the planetary gear units. The planetary gear units each include a sun gear, a plurality of planetary gears engaged to an outer portion of the sun gear, a ring gear which is an internal gear configured to accommodate the planetary gears, a carrier installed to rotatably support the planetary gears and coaxially rotate with the sun gear and configured to and to output a rotational power, and an output shaft provided on the carrier and coupled to the spindle. The center pin has one end press-fitted and fixed to the output shaft.

Disclosed herein is an electronic parking brake. According to one embodiment of the present invention, the electronic parking brake which includes a carrier in which a pair of pad plates disposed to press a disc rotated together with a wheel of a vehicle is installed to be moved forward and backward, a caliper housing slidably installed at the carrier and having a cylinder in which a piston is installed to be moved forward and backward by a braking hydraulic pressure, a motor disposed at an outer side of the caliper housing to generate a rotational force in forward and reverse directions, a conversion unit configured to convert the rotational force of the motor into a linearly reciprocating motion and transmit the converted force to the piston, and a decelerator disposed between the motor and the conversion unit and configured to decelerate the rotational force of the motor and transmit the decelerated rotational force to the conversion unit, includes an adaptor coupled with a rotational shaft of the motor and connected with an output gear of the decelerator, wherein the rotational shaft and an output shaft of the output gear are coaxially connected in series through the adaptor, and the output gear is supported by the adaptor to prevent shaking when being rotated.

Growing community of inventors

Gyeonggi-do, South Korea

Sung-Wook Yu