Electronic disc brake

Abstract

Disclosed herein is an electronic disc brake. The electronic disc brake according to one embodiment of the present disclosure includes a disc configured to be rotated with a wheel, a caliper housing configured to operate pad plates installed at both sides of the disc, and an actuator including a piston provided in the caliper housing and configured to press the pad plates to bring the pad plates into contact with the disc, a spindle rotatably installed in the caliper housing to move the piston forward and backward, a motor configured to rotate the spindle, and a speed reduction apparatus configured to transmit a rotational force of the motor to the spindle, wherein the speed reduction apparatus includes a power connecting unit connected to the motor, a bracket provide above the motor and configured to support the power connecting unit, and a speed reduction gear unit configured to sequentially connect the power connecting unit and the spindle.

Description

technical field [0001] The present invention relates to an electronic disc brake, and in more detail, relates to an electronic braking system capable of realizing the parking function through the operation of a motor. Background technique [0002] Generally speaking, the brake device is a device used to stop the vehicle when braking or parking to prevent the vehicle from moving, and it plays the role of fixing the wheels to prevent them from rotating. [0003] In recent years, an Electronic Parking Brake (EPB) system that drives a parking brake by electronic control, which is mounted on a conventional disc brake to perform a parking brake function, is widely used. Electronic disc brakes include a Cable Puller type, a Motor-On-Caliper (MOC) type, and a Hydraulic Parking Brake type. [0004] With reference to the patent document Korea Laid-Open Patent No. 10-2011-0072877 (June 29, 2011), the document relates to the MOC type electronic parking brake actuator structure, the mot...

AI Technical Summary

Problems solved by technology

[0004] With reference to the patent document Korea Laid-Open Patent No. 10-2011-0072877 (June 29, 2011), the document relates to the MOC type electronic parking brake actuator structure, the motor generating power is connected to the actuator, and multiple This gear unit decelerates the power generated by the motor while increasing the torque and transmits it to the actuator and caliper to perform the braking operation, however, the actuator used for this electronic disc brake generates a large Vibration and noise, poor assembly and price competitiveness

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