Electronic parking drum type brake assembly pushing Z-shaped pull arm to fulfill parking function

Abstract

The invention discloses an electronic parking drum type brake assembly pushing a Z-shaped pull arm to fulfill a parking function. The top end of the Z-shaped parking pull arm is hinged to the side face, facing a braking base plate, of a braking shoe rib. A long-strip-shaped through groove is formed in the braking base plate, the lower portion of the Z-shaped parking pull arm is bent, then passes through the long-strip-shaped through groove of the braking base plate and horizontally stretches to the reverse side of the braking base plate, and the tail end of the portion, horizontally passing tothe reverse side of the braking base plate, of the Z-shaped parking pull arm is downwards bent and connected with a threaded rod. A gearbox shell is fixedly installed on an installation support, anda motor is connected with the threaded rod through a gear transmission structure inside the gearbox shell, conducts transmission and drives the threaded rod to conduct axial movement. The end, stretching out of the gearbox shell, of the threaded rod is hinged with the downwards bent tail end of the side edge portion, passing through the braking base plate, of the tail portion of the Z-shaped parking pull arm. The electronic parking drum type brake assembly can accomplish electronic parking of a vehicle in the mode of pushing the Z-shaped parking pull arm, conducts emergency braking operation under the condition of the travelling vehicle braking failure, and has the anti-locking function.

Description

technical field [0001] The invention relates to automobile brake control technology, in particular to an electronic parking drum brake assembly for pushing a Z-shaped pull arm to realize a parking function. Background technique [0002] Automotive electronic parking is widely used in various models and has gradually become a standard configuration. There are generally two types of actuators: double-cable type and integrated type. In the current industry, there are double-cable electronic parking assemblies that act on the caliper assembly and drum brake assembly, and the integrated electronic parking assemblies basically act on the caliper assembly. For models with a large full load, more drum brakes need to be arranged. Now new energy electric vehicles are a trend. It is a common design for electric vehicles to be equipped with drum brakes. The integrated electronic parking assembly will also act on drum brakes. It will be a trend. The conventional integrated electronic p...

AI Technical Summary

Problems solved by technology

For models with a large full load, more drum brakes need to be arranged. Now new energy electric vehicles are a trend. It is a common design for electric vehicles to be equipped with drum brakes. The integrated electronic parking assembly will also act on drum brakes. It will be a trend. The conventional integrated electronic parking drum brake needs to drive the pull arm by pulling the cable, so as to realize electronic parking, and the cable connection has a certain efficiency loss.

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