Automobile brake pedal

Abstract

The invention provides an automobile brake pedal comprising a brake pedal swing arm, a first brake pedal rotating shaft, a triangular swing rod, a second brake pedal rotating shaft and a connecting rod, wherein the rear end of the brake pedal swing arm is mounted on a pedal bracket through the first brake pedal rotating shaft; one corner of the triangular swing rod is mounted on the pedal bracket through the second brake pedal rotating shaft; one end of the connecting rod is connected with the middle of the brake pedal swing arm through a pin shaft; the other end of the connecting rod is connected with the second corner of the triangular swing rod through a pin shaft; a brake master cylinder connecting hole is formed on the third corner of the triangular swing rod; and the connecting points of the first brake pedal rotating shaft, the second brake pedal rotating shaft and the connecting rod are not on the same straight line on the triangular swing rod, but are distributed to form a triangular structure. Through a link mechanism, the purposes of force transmission, force enlarging and force moving direction changing of the brake pedal are realized, that is, the brake function of the brake pedal can be realized under the condition that the arrangement space is limited, and a larger lever ratio can be obtained.

Description

technical field [0001] The invention relates to an automobile chassis braking system, in particular to an automobile brake pedal. Background technique [0002] In the existing automobile hydraulic braking system, if the attached figure 2 As shown, the brake pedal swing arm 1 rotates in cooperation with the circumferential direction of the first brake pedal rotation shaft 4, and the push rod of the brake master cylinder with vacuum booster connects with the brake master on the brake pedal swing arm 1 through the pin shaft. Cylinder connecting hole 6 is connected. When the pedal at the front end of the brake pedal swing arm is depressed for braking, the brake pedal swing arm 1 rotates around the first brake pedal rotation axis 4, thereby pushing the push rod on the brake master cylinder to achieve vehicle braking. The ratio of the input force on the brake pedal swing arm 1 to the output force of the push rod transmitted to the brake master cylinder is the leverage ratio. In...

AI Technical Summary

Problems solved by technology

In this brake pedal structure, in order to obtain a larger leverage ratio, the brake pedal swing arm needs to be designed to be longer, and when the brake pedal is stepped on, the space required for the movement of the front end of the brake pedal swing arm is also larger, so It is not conducive to layout in a limited space; and the existing brake pedal structure for automobiles cannot be enlarged due to its fixed lever ratio, which is not conducive to obtaining the best braking effect; in addition, the brake pedal swing arm is longer and is prone to deformation , affect the use effect

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