Disc brake and vehicle

Abstract

The invention relates to a disc brake and a vehicle. The disc brake comprises a brake caliper body, a first brake block, a service brake unit and a parking brake unit; the parking brake unit comprisesa parking motor and a cam push rod mechanism; and the parking motor drives the first brake block to move by means of the cam push rod mechanism so as to compress a brake disc. According to the brake,since the service brake unit and the parking brake unit are arranged, the brake can achieve two functions of service braking and parking braking at the same time, the function integration level is high, the structure is compact, and the occupied space is small; in addition, the cam push rod mechanism is adopted, when the parking brake unit executes an auxiliary ABS function, the parking motor only needs to rotate forwards or reversely at a high speed so as to enable a push rod to output high-pulse braking force, it is no need for the parking motor to continuously perform the switching betweenthe forward rotation and the reverse rotation or the switching between the power gaining and the power losing, and thus the service life of the parking motor is prolonged.

Description

technical field [0001] The present disclosure relates to the field of brakes, and in particular, to a disc brake and a vehicle. Background technique [0002] In the traditional hydraulic or pneumatic braking system, there are obvious shortcomings such as complex gas-liquid pipeline, difficult maintenance, complex layout structure, slow braking dynamic response, and low braking comfort performance. For example, in a hydraulic braking system, when the anti-lock braking system acts, the brake pedal will produce rebound vibration, which affects the braking comfort performance. For another example, since the brake pedal mechanism is directly connected with the brake transmission device and the brake execution device, the impact force generated when the vehicle collides will be directly transmitted to the cab through the braking system, which seriously affects the safety performance of the vehicle. For another example, the traditional hydraulic braking system uses large vacuum br...

AI Technical Summary

Problems solved by technology

[0002] In the traditional hydraulic or pneumatic braking system, there are obvious disadvantages such as complex gas-liquid pipeline, difficult maintenance, complex layout structure, slow dynamic response of braking, and low braking comfort performance.

For example, in the hydraulic braking system, the brake pedal will rebound and vibrate when the anti-lock braking system operates, which affects the braking comfort performance

For another example, since the brake pedal mechanism is directly connected with the brake transmission device and the brake actuator, the impact force generated when the vehicle collides will be directly transmitted to the cab through the brake system, which seriously affects the safety performance of the car.

As another example, the conventional hydraulic braking system uses components of the conventional hydraulic braking system such as the vacuum brake booster, the brake master cylinder, and the oil reservoir that are relatively large in size, so it not only has complex structure and assembly, but also has a large volume. , Difficult maintenance, and because the system is equipped with hydraulic brake lines and brake fluid connected to the corresponding components, it is necessary to replace the hydraulic oil regularly and regularly check whether there is a problem of hydraulic oil leakage

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