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Waterpoof and dampproof electret capacitance microphone

A condenser microphone and electret technology, applied in electret electrostatic transducers, electrostatic transducer microphones, etc., can solve problems such as poor ventilation, deterioration of sound quality characteristics of pronunciation or sound collection components, and achieve transmission good sound effect

Inactive Publication Date: 2007-03-21
SHANDONG GETTOP ACOUSTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem is that if the thickness of the sheet parts with high water resistance is increased, the air permeability will deteriorate, and the sound quality characteristics of the pronunciation and sound collection parts will deteriorate accordingly.
That is, in order to improve water resistance, it is necessary to increase the thickness of the sheet member, or to reduce the aperture diameter of the micropores formed on the porous sheet, which will deteriorate the sound quality characteristics of the sound emitting or sound collecting member.

Method used

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  • Waterpoof and dampproof electret capacitance microphone
  • Waterpoof and dampproof electret capacitance microphone

Examples

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Embodiment Construction

[0026] As shown in Figure 1 and Figure 2, the waterproof and moisture-proof electret condenser microphone includes a metal shell 1, the closed end of the shell 1 is provided with a sound hole 1a, and the outer surface of the sound hole 1a is fixed with a dust-proof or Water mist enters the waterproof net 10 inside the microphone from the sound hole 1a, the waterproof net 10 is a polyvinyl alcohol fiber vinyl paper waterproof net, and the waterproof net density is 30-40g / m 2 , the waterproof net 10 is two layers that are overlapped and bonded at the edges;

[0027] The water-blocking mesh support ring 2, which is located inside the closed end of the housing 1 and is ring-shaped, is used to support the water-blocking mesh 3 and serves as an electrical connection part between the water-blocking mesh 3 and the metal casing 1; the water-blocking mesh The mesh support ring 2 and the metal shell 1 are integrally structured, so that it can be completed at one time in the process of st...

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Abstract

An electret-capacity microphone of waterproof and antimoisture type is prepared as setting voice hole at sealed end of metal shell; fixing waterproof screen at external side of said voice hole for avoiding dust or moisture to enter internal of microphone; superposing support ring of water blocking screen, water blocking screen, vibration diaphragm, insulation pad, back polar plate, polar ring and printed circuit board in sequence in metal shell.

Description

technical field [0001] The invention relates to an electret condenser microphone. Background technique [0002] A variety of electret microphones have been disclosed in the prior art, all of which include a capacitor unit composed of a back plate and a vibrating diaphragm for receiving sound waves for conversion into electrical signals representing the sound waves. [0003] During the use of the electret microphone, if water vapor enters the capacitor unit, the water vapor condenses and then forms a water film or water droplets on the surface of the capacitor unit. When the water drop touches another surface, it will cause the capacitor unit to fail, unable to accurately convert and transmit the sound information. [0004] The method of the existing waterproof function is to set a waterproof sheet or a drip-proof sheet to cover the sound hole of the sound collecting part. In order to prevent water from penetrating into the sheet member, it is necessary to increase the wate...

Claims

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Application Information

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IPC IPC(8): H04R19/01H04R19/04
Inventor 赵笃仁
Owner SHANDONG GETTOP ACOUSTIC
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