Electronic parking brake apparatus
AssigneeHyundai Mobis Co., Ltd.
InventorsHyung Suk Yoon, Jin Woo Choi, Yong Beom You
Life of this patent
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Abstract
An electronic parking brake apparatus is disclosed. An embodiment of the present disclosure provides an electronic parking brake apparatus including a drum; a backing plate located on a side inside the drum; a cylinder attached to a surface of the backing plate; a motor configured to expand or contract the cylinder; a pair of shoes coupled to one side and an other side of the cylinder, respectively, with a lining attached to an outer circumferential surface thereof; a spring located between the pair of shoes and coupled to the pair of shoes; and a control unit configured to control a contraction operation of the cylinder during parking release operation, wherein the control unit determines an end time of the contraction operation.
Claims4
An electronic parking brake apparatus for a vehicle, comprising:
- a drum;
- a backing plate disposed within the drum;
- a cylinder attached to a surface of the backing plate;
- a motor configured to expand or contract the cylinder;
- a pair of brake shoes respectively coupled to first and second sides of the cylinder;
- a lining attached to an outer circumferential surface of each brake shoe;
- a spring coupled between the pair of brake shoes;
- and
- a control unit configured to control a contraction operation of the cylinder when a parking brake of the vehicle is released,
- wherein the control unit is configured to determine, based on a temperature of the motor or a hydraulic pressure of a master cylinder of the vehicle, an end time of the contraction operation of the cylinder in order to control contraction of the cylinder, and
- wherein the control unit is configured to delay the end time of the contraction operation when a temperature of the drum is higher than a first predetermined temperature, the temperature of the motor is lower than a second predetermined temperature, and the hydraulic pressure of the master cylinder is higher than a predetermined pressure.
Dependencies are inferred from the claim text.