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Ear plug to be inserted into the external auditory canal

a technology for external auditory canals and ear plugs, which is applied in the field of ear plugs, can solve the problems of clogging of the ear, remarkably reducing the performance of the ear plugs, and affecting the sound quality of the ear, so as to prevent sound leakage and reduce the pressure difference

Inactive Publication Date: 2004-07-08
MIMY ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005] Consequently, an object of the present invention is to lengthen a communicating passage or vent to an effective degree for remarkably decreasing the pressure difference between the inside of the external auditory canal and the external atmosphere as well as preventing leakage of sound causing so-called howling.

Problems solved by technology

However, if the degree of prevention of noise is improved at that time, there occurs a pressure difference between the external atmosphere and an inside of the external auditory canal, accompanied by problems such as feeling of oppression with clogging of the ear.
This causes so-called howling to remarkably decrease the performance of the ear plug.

Method used

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  • Ear plug to be inserted into the external auditory canal
  • Ear plug to be inserted into the external auditory canal
  • Ear plug to be inserted into the external auditory canal

Examples

Experimental program
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first embodiment

[0033] FIG. 2 to FIG. 4 show the present invention.

[0034] FIG. 2 shows an improved ear plug 15 of the present invention comprising a core member 1 composed of a flexible material such as polyethylene having a penetrating lumen 14 formed inside from one end to another end, plural disc-like or ring-shaped projections 5 formed intermittently on an exterior of the core member 1, and a compressible sleeve member 2 composed of a sponge-like material such as polyurethane. The sleeve member 2 is attached to the core member 1 through an adhesive agent (not shown) adhered particularly between the circumference of the projections 5 and the sleeve member 2 so as to maintain respective spaces between adjacent projections 5.

[0035] The projections 5 have vents 6 and 7 penetrating through each wall portion. Among these vents, an innermost vent 6a is formed through an innermost projection 5a of the projections 5 (or another vent 4 (see FIG. 5 ) can be formed instead through an inner end portion of t...

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Abstract

An ear plug to be inserted into the external auditory canal, having a compressible sleeve member and a core member attached therein, the improvement in which plural projections or a single projection are formed intermittently or continuously on an exterior of the core member, and vent is formed through or along the projection to make the external auditory canal communicate with the external atmosphere when inserted into the external auditory canal. A communicating passage or vent to an effective degree for remarkably decreasing the pressure difference between the inside of the external auditory canal and the external atmosphere as well as preventing leakage of sound causing so-called howling.

Description

INDUSTRIAL FIELD OF THE INVENTION[0001] The present invention relates to an ear plug usable for prevention of noise, acoustic instruments such as hearing aids, and so on.[0002] 1. Prior Art[0003] FIG. 1 shows the prior art ear plug wherein a sponge-like sleeve member 2 is fixed on an exterior of a core member 1 in a body. An external enlarged portion la of the core member 1 has a shallow vent 3 formed therethrough to loose a pressure difference between an interior of the external auditory canal and the external atmosphere when the ear plug is inserted into the external auditory canal. The core member 1 is formed as a part of a hearing aid 12.[0004] It is required that the ear plug is superior in prevention of noise of high frequency when inserted into the external auditory canal. However, if the degree of prevention of noise is improved at that time, there occurs a pressure difference between the external atmosphere and an inside of the external auditory canal, accompanied by proble...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61F11/08
CPCA61F2011/085A61F11/08A61F11/085
Inventor KUNO, TAKASHIOWADA, KENJIROOHGUSHI, MASAHIKO
Owner MIMY ELECTRONICS
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