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Electric parking brake actuator

A brake device and actuator technology, which is applied in the direction of brakes, transmission parts, transmission control, etc., can solve the problems of gaps between connecting ribs and notches, performance and durability defects, etc.

Active Publication Date: 2019-04-30
LG INNOTEK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in consideration of the state of the ring gear which continuously receives torque and the tolerances associated with the notch of the injection-molded housing, in the configuration in which the coupling rib slides on the notch, a gap may occur between the coupling rib and the notch
As mentioned above, when there is a gap between the ring gear and the housing, the performance and durability of the product may have serious defects

Method used

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  • Electric parking brake actuator
  • Electric parking brake actuator
  • Electric parking brake actuator

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Embodiment Construction

[0027] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The various aspects, special effects, and technical features of the present invention will be clear through the following detailed descriptions related to the accompanying drawings and exemplary embodiments of the present invention. The terms and words used in this specification and claims should not be understood as limited to general or lexical meanings. As far as the inventor can appropriately define the concept of the term in order to describe the embodiment in the best manner, the term should be understood as a meaning and concept suitable for the technical idea of ​​the embodiment. Detailed descriptions of related technologies that may unnecessarily make the gist of the present invention unclear will be omitted.

[0028] The following technical features are provided that are different from the previous ones: wherein an insertion protru...

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Abstract

A parking brake actuator is provided. The parking brake actuator includes: a motor; a power transfer unit connected to an output shaft of the motor; a planetary gear set including a spur gear connected to the power transfer unit, and a spur gear planetary gears engaged with the gears, and a ring gear engaged with the planetary gears and including an insertion protrusion formed on the bottom; and a case including a motor accommodation portion accommodating a motor therein and a ring gear accommodating the ring gear therein The accommodating portion, wherein the ring gear accommodating portion includes an insertion groove formed on a bottom surface, and the insertion protrusion is forcibly inserted into the insertion groove. Providing the parking brake actuator prevents play between the ring gear and the housing of the planetary gear set. The above-described configuration increases the degree of freedom in tolerance design related to the ring gear housing portion of the housing, thereby improving the quality of the product.

Description

[0001] Cross references to related applications [0002] This application claims the priority and rights of Korean Patent Application No. 2014-0042474 filed on April 9, 2014, and the entire disclosure of the application is incorporated herein by reference. Technical field [0003] The present disclosure relates to an electronic parking brake device actuator, and more particularly to an electronic parking brake device actuator including a planetary gear set. Background technique [0004] The electronic parking brake (EPB) is a device that electronically controls the driving of the parking brake. EPB is installed on a general disc brake device and performs the parking brake function. In order to operate the EPB, an additional actuator is required. [0005] The actuator of the EPB includes a motor installed inside the housing, and a gear assembly for transmitting power and reducing speed is provided on the output shaft of the motor. [0006] The gear assembly may include a planetary gea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D65/14F16H55/06F16H55/17F16D121/24F16D125/50
CPCB60T13/746F16D2125/50F16D65/16F16D2121/24F16D2125/48F16H57/08F16H63/3466F16H57/023
Inventor 柳炳锺
Owner LG INNOTEK CO LTD