Drum brake device with early warning function

Abstract

The invention relates to the technical field of vehicle parts, and discloses a drum brake device with an early warning function. The drum brake device comprises a brake drum, a brake wheel cylinder is fixedly arranged at the top of the front surface of the brake drum, and brake shoes are fixedly connected to the two ends of the brake wheel cylinder. According to the drum brake device with the early warning function, a early warning piece is arranged, so that an early warning thickness is set for a brake pad body, when a friction plate is worn, the early warning piece is then rubbed with an inner wall of the brake drum, large noise is given out, and the noise is collected by a sound sensor, then sends a signal to an emitter, and sends the signal to an alarm after receiving the signal from a receiver in a vehicle-mounted center control panel, the alarm is sent to remind a driver that the brake pad body needs to be close the limit value and needs to be replaced in time, so that the function of early warning of the thickness of the brake pad body is achieved, and the traffic accidents caused by the fact that the brake pad body is completely worn but still in use are avoided.

Description

technical field [0001] The invention relates to the technical field of vehicle parts, in particular to a drum brake device with an early warning function. Background technique [0002] The brake pad of drum brake device includes brake iron and brake pad body. When braking, the brake pad body is squeezed on the brake drum to generate friction, so as to achieve the purpose of vehicle deceleration and braking. Due to friction, the brake pad body will be gradually Wear and tear, when the wear to a certain extent, you need to replace the brake pads to ensure driving safety. [0003] In the prior art, when to replace the brake pads is mainly through the following forms: Generally, the brake pads need to be replaced after the vehicle has traveled 50,000 kilometers. , which increases the friction between the brake pad body and the brake drum, thereby accelerating the wear of the brake pad body, and this form cannot be warned in advance, so that the brake pads have been worn out whe...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, when to replace the brake pads is mainly through the following forms: Generally, the brake pads need to be replaced after the vehicle has traveled 50,000 kilometers. , which increases the friction between the brake pad body and the brake drum, thereby accelerating the wear of the brake pad body, and this form cannot be warned in advance, so that the brake pads have been worn out when the vehicle has traveled less than 50,000 kilometers. Wear and tear needs to be replaced, and the owner continues to drive without replacement, which may lead to traffic accidents

[0004] Because the drum brake device is relatively sealed and the air circulation is poor, the overall heat dissipation effect is not good. When the car brakes in an emergency, the brake pad body and the brake drum will rub violently to generate high temperature. Due to the slow temperature loss, the drum brake device is prone to Complicated deformation, resulting in braking fading and chattering, causing a decrease in braking efficiency and forming a safety hazard. Therefore, it is necessary to cool down the drum brake in time. However, in the prior art, the vehicle is basically , the driver gets off the car to cool it with water, and when to cool it is up to the driver to judge based on experience. This kind of judgment method cannot give early warning. If the driver does not cool it in time, it may cause certain safety accidents.

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