Actuator assembly for electronic parking brake

An electronic parking brake and actuator technology, applied in the direction of brakes, brake components, brake transmissions, etc., can solve the problems of power transmission loss and noise, output shaft power loss, and overall alignment instability. Achieve the effect of improving durability and manufacturability
CN107848518AInactive Publication Date: 2018-03-27KEYANG ELECTRIC MACHINERY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
KEYANG ELECTRIC MACHINERY
Publication Date
2018-03-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to an actuator assembly for an electronic parking brake having a multi-stage planetary gear mechanism. The present invention can provide an actuator assembly for an electronic parking brake. The multi-stage planetary gear mechanism comprises a center pin extending through through-holes of an entire planetary gear mechanism; a housing for supporting one end of the center pin; a plurality of a planetary gear carriers spaced apart from each other on the axial direction of the center pin and each including a through-hole; a plurality of planetary gears inserted into aplanetary gear shaft disposed radially around the through-hole on one side of the planetary gear carrier; and a sun gear of the planetary gear mechanism which is engaged with the planetary gear of the next stage on the opposite side of one surface of the planetary gear carrier on which the plurality of planetary gears are disposed so that the planetary gear carrier can rotate, wherein the diameter of the through-hole is larger than the diameter of the center pin.
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Description

technical field

[0001] The present disclosure relates to an actuator assembly for performing operation of an electric parking brake, and more particularly, to an actuator assembly for an electric parking brake, wherein the application for preventing loss of actuator output The planetary gear structure to achieve high-quality actuator components.

[0002] More specifically, the present disclosure relates to an actuator assembly for an electric parking brake in which a king pin of a planetary gear mechanism is not integrally formed with a planet carrier to prevent an output of the planetary gear mechanism from being Deviate in the direction. Background technique

[0003] The actuator of the electronic parking brake of a vehicle includes an electric motor and a power transmission device to operate a friction pad installed at a caliper of a disc brake when parking.

[0004] For example, when the driver presses the parking brake switch, the rotational force of the motor of the ...

Claims

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