Automatic transmission parking mechanism of pure electric vehicle

Abstract

The invention relates to an automatic transmission parking mechanism of a pure electric vehicle. The automatic transmission parking mechanism is mainly composed of a braking motor, a T-shaped guide rail, a push rod, a lead screw, a coupler, a braking disc, a disc and five braking columns, and the braking disc and the disc are concentric, so that the braking columns mounted on the disc can be smoothly inserted into the braking disc; a pressed spring is mounted between the braking columns and the disc, so that the braking columns on the disc can freely extend and contract; the braking disc is provided with six 30-degree arc-shaped grooves which are uniformly distributed, and the braking columns which are uniformly distributed are mounted on the disc. When the electric vehicle is at a parking gear position, the push rod can drive the disc and the spring to insert the braking columns into the braking disc to realize transmission braking; when the electric vehicle is at other gear positions, the push rod goes back to a starting position, and the braking columns retreat from the braking disc to eliminate braking. The automatic transmission parking mechanism has the advantages of compact structure and high automation level and is designed for parking of the pure electric vehicle; when the braking state cannot be eliminated after parking, bolts on a rack can be loosened to enable the braking columns to break away from the braking disc to eliminate the parking and braking state.

Description

technical field [0001] The patent of the present invention relates to a parking device for an automobile gearbox, in particular to a parking brake mechanism for an automatic gearbox of a pure electric automobile. Background technique [0002] With the continuous development of electric vehicle technology, people have higher and higher requirements for vehicle handling performance, driving comfort, and space layout. The labor intensity and comfort are not enough, and the existing transmission parking devices designed for pure electric vehicle parking are complex in structure and often poor in performance. There are many problems, which bring unstable factors to the safety of pure electric vehicles. [0003] Search relevant patent documents, most of the gearbox parking devices currently use brake mechanisms similar to ratchet wheels and pawls, the structure of the patent of the present invention is completely different from that of ratchet wheels and pawls, and the patent stru...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of electric vehicle technology, people have higher and higher requirements for vehicle handling performance, driving comfort, and space layout. The labor intensity and comfort are not enough, and the existing transmission parking devices designed for pure electric vehicle parking are complex in structure and often poor in performance, and there are many problems, which bring unstable factors to the safety of pure electric vehicles

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