Pull rope electronic parking brake transmission mechanism

Abstract

The invention relates to a pull rope electronic parking brake transmission system. The mechanism consists of a motor, a speed reducing mechanism and a transmission mechanism, wherein the transmission mechanism comprises a shell; an end cover is fixed with the shell through a connecting screw and a spring washer; a screw is connected with an internal spline at the output end of the speed reducing mechanism through an internal spline at an outer end, is respectively supported on a shell hole and an end cover hole through a sliding bearing I and a sliding bearing II, and is axially positioned by a thrust roller bearing and a clamping spring; the screw is in transmission fit with a square nut through threads; a cylindrical boss on the square nut is matched with middle holes of balance arms; the two balance arms are connected through two connecting pin shafts; two pull wire clips are connected with the connecting pin shafts through hole shaft fit; and the end cover is provided with pull wire adjusting nuts which correspond to the pull wire clips and are matched through pull wires. The mechanism has the advantages that: electricity is used for replacing mechanical operation, and quicker and lighter parking brake is provided; the motor is easily controlled automatically; ramp starting difficulty is reduced, and driving convenience and driving safety are improved; and the total volume of a parking operation part is reduced, and the mechanism is convenient to install.

Description

technical field [0001] The invention relates to a parking brake, in particular to a transmission system of a cable type electronic parking brake. Background technique [0002] At present, the parking brake of most cars mostly adopts the handbrake type parking brake, and its disadvantages are: (1) The handbrake needs to be pulled after parking, which increases the labor intensity of the driver, especially for female drivers. (2) When starting on a slope, it is necessary to rely on the driver to operate the hand brake, accelerator, and clutch correctly at the same time to start smoothly, which increases the difficulty of driving; (3) When parking on a slope, if If the handbrake is not in place, the car may drive backwards on the slope, causing an accident; (4) The handbrake operating handle affects the cab space, and the handbrake cable is relatively long and difficult to arrange. Contents of the invention [0003] The present invention aims to solve the above-mentioned sho...

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Problems solved by technology

[0002] At present, the parking brake of most cars mostly adopts the handbrake type parking brake, and its disadvantages are: (1) The handbrake needs to be pulled after parking, which increases the labor intensity of the driver, especially for female drivers. (2) When starting on a slope, it is necessary to rely on the driver to operate the hand brake, accelerator, and clutch correctly at the same time to start smoothly, which increases the difficulty of driving; (3) When parking on a slope, if If the handbrake is not in place, the car may drive backwards on the slope, causing an accident; (4) The handbrake operating handle affects the cab space, and the handbrake cable is relatively long, making it difficult to arrange

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