Vibration and noise reduction structure of steering wheel system

Abstract

A vibration and noise reduction structure of a steering wheel system comprises a steering wheel framework and a driver air bag, a plurality of vibration reduction units are installed on the steering wheel framework, and an air bag shell of the driver air bag is elastically connected with the steering wheel framework in a clamped mode through a clamping spring and the vibration reduction units. Abnormal vibration borne by a steering wheel is transmitted to a driver air bag through the vibration reduction unit, and therefore the energy absorption and vibration reduction effects are achieved through the driver air bag. A plurality of conductive elastic sheets is fixed on the bottom surface of the air bag shell through a supporting ring arranged in the air bag shell, the conductive elastic sheets form a conductive path through the supporting ring, and one of the conductive elastic sheets is provided with a plugging sheet; gaps are reserved between the outer ends of the conductive elastic pieces and the bottom face of the air bag shell and correspond to conductive contacts arranged on the steering wheel framework in a one-to-one mode. The invention has the beneficial effects that the vibration damping performance of the product can be improved in a limited space; the structure is simple, cost is low and weight is light; the multi-frequency instant impact force of the horn conductive metal unit can be buffered, and the impact noise is reduced.

Description

technical field [0001] The invention relates to the field of automobile steering wheels, in particular to a steering wheel system vibration and noise reduction structure. Background technique [0002] With the development of the application of 3-cylinder vehicles in the market, and the current higher and higher requirements for vehicle vibration reduction performance, OEMs are paying more and more attention to the NVH performance of products, while steering wheel vibration and noise directly affect the driver's driving experience and comfort ; Therefore, it is of great significance to increase the vibration reduction function of the steering wheel system and develop a horn mechanism that can effectively reduce contact noise; it is of great significance to control vibration and noise. [0003] For the mechanism of vibration, the concept of shock absorber is cited. The shock absorber is a suspended mass used to reduce the vibration amplitude on the target structure; the suspen...

AI Technical Summary

Problems solved by technology

However, the defect of this structure is that when the vehicle enters the rough and bumpy road surface, the two metal units collide with each other multiple times, because there is no cushioning to offset the two metal units when they collide, so multiple frequency impact noises are generated

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