Compound damping layer vibration attenuation piece for noise reduction of disc type brake

Abstract

The invention relates to a compound damping layer vibration attenuation piece for noise reduction of a disc type brake. The compound damping layer vibration attenuation piece mainly comprises a brake caliper, an outer brake block, an inner brake block, a brake disc and a piston, wherein the two sides of the brake disc are respectively provided with the outer brake block and the inner brake block; the outside of the outer brake block is provided with the brake caliper; the outside of the inner brake block is provided with the piston; and vibration attenuation pieces are arranged between the outer brake block and the brake caliper as well as between the inner brake block and the piston. The invention has the advantages that, through improving a vibration attenuation structure of a traditional disc type brake by utilizing a simple and practical high molecular damping material, the invention enables vibrations of the brake blocks and the like which generate noise directly to greatly enhance vibration energy consumption due to the action of the compound damping layer, thereby achieving the purpose of vibration attenuation and noise reduction; moreover, the invention can be used for the vibration attenuation and the noise reduction of a fixed caliper or a floating caliper disc type brake.

Description

technical field [0001] The invention mainly relates to the field of vibration-damping sheets on automobile brakes, and mainly relates to a composite damping-layer vibration-damping sheet for disc brake noise reduction. Background technique [0002] Cars are one of the most important means of transportation in the world today, and the safety performance of brakes is crucial to all running vehicles. Automobile brakes are mainly drum and disc, which rely on the dry friction of the friction pair to achieve the braking effect. The vibration and noise produced by the car during braking not only have a great impact on the performance of the car, affect the comfort of passengers, but also seriously pollute the urban environment. Vibration will also reduce the life of components and reduce the reliability of the brake; in severe cases, it will deteriorate the braking performance and affect the braking stability; it may even cause early damage to the components and cause serious cons...

AI Technical Summary

Problems solved by technology

Although the research on the noise problem of automobile brakes has a history of several decades, due to the complexity of the problem itself and the limitation of technical means, so far, the research on the noise problem has not achieved a very consistent from the mechanism of occurrence to the analysis method. In conclusion, the problem has not been effectively solved

[0004] From the perspective of the acoustic system, since the noise comes from vibration, the root of controlling structural noise is to control the vibration of the structure. The specific measures can be carried out from the following two aspects: one is to control from the noise source, that is, active control technology, But for the control of medium to high broadband noise like brakes, many problems remain unsolved

In addition, brake noise control is the control of its radiation noise rather than space noise control, so active noise reduction is not suitable

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