Sound insulation ear muff formed by tapping-type porous glass and air bag

Abstract

The present invention provides a sound insulation ear muff formed by tapping-type porous glass and an air bag. The sound insulation ear muff comprises an ear muff frame body, a housing, an external decoration layer and an internal filling layer; the internal filling layer is fixed in the ear muff frame body and the housing and is closed through the external decoration layer; the internal filling layer is formed by the tapping-type porous glass and a down-fill frameless air bag; the down-fill frameless air bag performs seaming by employing light flexible materials to form the air bag, and the air bag is filled with natural down feather. The tapping-type porous glass and the down-fill frameless air bag are taken as internal filling materials to prepare a light ear muff with a good sound insulation effect, and the light ear muff has good sound absorption and sound insulation effects in a human ear sensitive area range.

Description

technical field [0001] The invention relates to the field of acoustics, in particular to a sound-insulating earmuff composed of perforated porous glass and an air bag. Background technique [0002] The general earmuff structure consists of two parts, the outer layer is a cortical layer or a decorative cloth layer, and the inner layer is a filling layer. The main function of the earmuffs is sound insulation, reducing background noise, without affecting the working environment of the earphones, so that the listener can obtain high-quality earphone sound effects. It can be seen from the current materials used in earmuffs that the outer cortical layer or decorative cloth layer is thinner, has poor sound insulation performance, and poor sound absorption performance; the internal filling layer generally uses porous skeleton materials such as sponge or foam cushions. Compared with the outer cortex layer or the decorative cloth layer, it has better sound absorption performance. ...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of unsatisfactory sound insulation effect, stuffy feeling and poor low-frequency sound absorption performance of traditional earmuffs using soft skeleton materials as the internal filling layer, the present invention proposes a kind of earmuffs composed of open-cell porous glass and airbags. The sound-insulating earmuffs creatively use open-cell porous glass and velvet-filled skeleton-free airbags as internal filling materials to prepare lightweight earmuffs with good sound insulation. In the sensitive area of ​​the human ear, this lightweight earmuff Good sound absorption and sound insulation

However, the simple use of open-cell porous glass as the internal filling layer also has problems such as too hard structure and uncomfortable wearing.

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