External auditory canal silencing ear plugs

An external auditory canal and earplug technology, applied in the field of earplugs, can solve the problems of narrow absorption of sound waves, discomfort, pain, etc., and achieve the effect of eliminating energy

Inactive Publication Date: 2011-06-01
710TH RES INST OF CHINA SHIPBUILDING IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, the existing earplugs are fixed on the ear by squeezing the external auditory canal, so the external auditory canal is painful when worn for a long time. Humidity makes people feel uncomfortable; again, the various noise-absorbing earplugs currently on the market can absorb sound waves in a narrow frequency range, and the noise reduction ability is low, especially in some places where the noise is particularly loud, the effect is not obvious

Method used

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  • External auditory canal silencing ear plugs
  • External auditory canal silencing ear plugs
  • External auditory canal silencing ear plugs

Examples

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] Such as figure 1 As shown in the figure, a noise canceling earplug of the external auditory canal includes a sound reflection plate, a sound piezoelectric ceramic group, a sound resistance sheet and a sound attenuation body.

[0032] Such as figure 2 As shown, the sound reflection plate is made of shock-absorbing alloy material by stamping and forming, with a thickness of 0.3mm-0.5mm, and has a ventilating hole with an inner diameter of 1.5mm-1.8mm. The outer surface of the acoustic reflection plate is slightly convex and polished, and its roughness is Ra=0.4μm, which is conducive to the reflection of sound waves and absorbs less energy. At the same time, it can change the propagation direction of sound waves in the damping alloy medium. Such as image 3 As shown, the inner surface of the acoustic reflection plate is slightly concave, and many coni...

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Abstract

The invention relates to external auditory canal silencing ear plugs, which comprise sound reflecting plates, sound piezoelectric ceramic groups, acoustic resistance sheets and silencing bodies, wherein the silencing bodies in the silencing ear plugs have T-shaped structures and are fixed on ears by clamping external auditory canals, so that pressure pain is not caused even when the ear plugs are worn for a long time; small ventilation holes in the sound reflecting plates, metallization ventilation holes of the sound piezoelectric ceramic groups, ventilation holes on the acoustic resistance sheets and through holes on the silencing bodies are connected with one another to form a communicated bent channel, so that external auditory canals are communicated with the outside and do not become damp even when the ear plugs are worn for a long time; the sound piezoelectric ceramic groups refer to two sound piezoelectric ceramics with different resonant frequencies; and an anode and a cathode produced by the sound piezoelectric ceramics are connected with each other through the metallization ventilation holes, so that energy produced by sound waves can be well eliminated.

Description

technical field [0001] The invention relates to an earplug, in particular to a noise-absorbing earplug for the external auditory canal. Background technique [0002] In some factories, the sound of various instruments and equipment is extremely loud, which has a great impact on the staff who work in such an environment for a long time. Not only will the concentration be reduced, the hearing will be damaged, and even deafness will be caused. First of all, the existing earplugs are fixed on the ear by squeezing the external auditory canal, so the external auditory canal is painful when worn for a long time. Humidity makes people feel uncomfortable; again, various noise-canceling earplugs currently on the market can absorb sound waves in a narrow range, and have low noise reduction capabilities, especially in some places where the noise is particularly large, the effect is not obvious. Contents of the invention [0003] The object of the present invention is to provide a noi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F11/08
Inventor 佘以军
Owner 710TH RES INST OF CHINA SHIPBUILDING IND CORP
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