Automatic noise reduction device, seat and vehicle

Abstract

The embodiment of the invention discloses an automatic noise reduction device, a seat and a vehicle, and relates to the technical field of noise reduction, the structure is simple, the maintenance cost is low, the noise elimination frequency under different working conditions can be automatically eliminated, the ear pressing feeling of a driver and passengers is reduced, and the comfort is improved. The automatic noise reduction device comprises a shell, a partition plate, a ventilation pipe and a driving assembly, a containing cavity extending in the first direction is formed in the shell, the partition plate is arranged in the containing cavity and extends along the plane perpendicular to the first direction, and the edge of the partition plate is in sealed sliding connection with the inner wall of the containing cavity; the ventilation pipe is arranged on the shell and communicates with the containing cavity, in a cavity defined by the partition plate and the containing cavity, the ventilation pipe is arranged as a silencing cavity, and the ventilation pipe is used for communicating the silencing cavity with the outside; and the driving assembly is fixed to the shell, and the driving assembly is used for driving the partition plate to slide in the silencing cavity in the first direction so as to change the volume of the silencing cavity. The automatic noise reduction device is used for eliminating or reducing the frequency of noise.

Description

technical field [0001] The present application relates to but not limited to the technical field of noise reduction, and in particular relates to an automatic noise reduction device, a seat, and a vehicle. Background technique [0002] Rest and sleep are necessary conditions for people to eliminate fatigue, restore physical strength and maintain health, but noise makes people restless and difficult to rest and fall asleep. When people toss and turn and cannot fall asleep, they will have symptoms such as mental tension, shortness of breath, increased pulse beating, and brain excitement, which will cause people to feel tired or weak in limbs the next day, which will affect work and study. Neurasthenia, manifested as insomnia, tinnitus, etc. [0003] Especially people who work in noise sources are most seriously affected. For example, when they get off an airplane or come out of a forging workshop, their ears are always buzzing, and they can't even hear the other party's voice...

AI Technical Summary

Problems solved by technology

The existing noise reduction device needs to be equipped with a noise reduction system, which is costly and difficult to design, and there is a delay in the reverse sound wave control. With long-term use, there is a risk of failure, which also indirectly increases the maintenance cost of the vehicle.

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