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Worm gear, worm, ball and wedge-disc type electronic parking brake

An electronic parking brake, worm gear technology, applied in the direction of brake type, axial brake, brake actuator, etc., can solve the problems of cumbersome starting operation on slopes, difficult to achieve self-adjustment of clearance, and consumption of driver's physical strength. , to achieve the effect of good inheritance of manufacturing process and process flow, low cost of transformation and processing, and compact structure

Inactive Publication Date: 2014-12-10
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the traditional vehicle parking brake system mainly implements the parking brake by controlling the mechanical cable through the parking brake handle. The operation is cumbersome, it is difficult to realize the gap self-adjustment, and the safety is low

Method used

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  • Worm gear, worm, ball and wedge-disc type electronic parking brake
  • Worm gear, worm, ball and wedge-disc type electronic parking brake
  • Worm gear, worm, ball and wedge-disc type electronic parking brake

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Embodiment Construction

[0040] Such as figure 1 , figure 2 and Figure 8 As shown, the worm gear and worm ball wedge disc electronic parking brake according to the present invention includes an actuating device and a brake caliper assembly, and the brake caliper assembly includes a brake caliper bracket 1, a brake caliper body 3, The inner brake block 27 , the outer brake block 2 , the push rod assembly 42 and the piston assembly 41 .

[0041]The brake caliper body 3 is an integral structure composed of a connecting body 301 and a cavity 302. Two guide pins 5 are symmetrically fixed on both sides of the connecting body 301 at the upper end of the brake caliper body 3 by fastening bolts 6. The guide pins 5 are respectively inserted into the two corresponding sockets at the upper end of the brake caliper bracket 1 and are slidingly fitted, so that the brake caliper body 3 can slide axially along the guide pin 5 on the brake caliper bracket 1; The pin 5 roots are respectively fixedly covered with a ...

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Abstract

The invention discloses a worm gear, worm, ball and wedge-disc type electronic parking brake which comprises an actuating device and a brake caliper assembly. The brake caliper assembly comprises a push rod assembly and a piston assembly which are arranged in a cavity of a brake caliper. The push rod assembly comprises a wedge disc, balls, a push rod shaft, a self-regulation screw, a pressure spring and a spring limiting sleeve. The push rod shaft extends out of the cavity and is connected with a transmission mechanism of the actuating device. The multiple balls are evenly distributed between the push rod shaft and the wedge disc in a clamped mode and used for generating axial push force. The self-regulation screw is connected with the self-regulation screw of the piston assembly in a threaded mode. The actuating device comprises a shell, the transmission mechanism and a driving motor. The worm gear, worm, ball and wedge-disc type electronic parking brake has the advantages that physical output of a driver can be reduced, a vehicle parking brake system can be simplified, the gap self-regulation function, the speed-reduction and torque-increasing functions, the movement conversion function and the mechanical reverse self-locking function can be conveniently achieved, and electric power consumed during long-time parking can be reduced; in addition, the transformation machining cost is low, and the manufacturing-process succession performance and the technological-process succession performance are good.

Description

technical field [0001] The invention relates to an actuator in a vehicle parking brake system, more precisely, the invention particularly relates to a worm gear ball wedge disc type electronic parking brake. Background technique [0002] At present, the traditional vehicle parking brake system mainly implements the parking brake by controlling the mechanical cable through the parking brake handle. The operation is cumbersome, it is difficult to realize the gap self-adjustment, and the safety is low. With the development of automotive electronic technology, automotive control-by-wire technology has appeared in the field of automotive control, and then automotive brake-by-wire technology has emerged. Electronic parking brake system EPB (Electric Park Brake) is a type of automotive brake-by-wire technology. [0003] The electronic parking brake system EPB is mainly composed of the electronic parking brake and the electronic control unit. Among them, the electronic parking br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D55/22F16D65/14F16D121/24F16D125/20
Inventor 王军年魏武李修森闫佳伟佟静
Owner JILIN UNIV
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