CN2814862Y

CN2814862Y - Electret capacitor microphone

Info

Publication number: CN2814862Y
Application number: CN 200520012307
Authority: CN
Inventors: 郑虎鸣
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-31
Filing date: 2005-03-31
Publication date: 2006-09-06
Anticipated expiration: 2015-03-31

Abstract

A kind of volume that the utility model provides is little, interference free performance is high, the life-span is long, wide frequency range, the good microphone of damping performance highly sensitive and easy for installation.It comprises shell, advances sound mouth, electret capacitor, in square shell, place a vibrating diaphragm group, then put into a pad, again put into the ambroin ring, put into back pole plate at the ambroin ring, lean on the into middle semicircle orifice that dashes of sound mouth bottom plate at back pole plate, and paste the field effect multiple tube on back pole plate surface, cover the wiring board group, cover supporting steel plate, then rear casing be connected encapsulation with front casing, advance the sound mouth and be installed on the sound inlet place.The utility model has following advantage compared to existing technology: little, in light weight, the easy for installation damping performance of cuboid overall volume is good, is convenient to the complete machine miniaturization.

Description

Electret capacitor microphone

Technical field

The utility model relates to a kind of microphone, particularly a kind of electret capacitor microphone.

Background technology

Microphone is widely used in people's every field such as life, particularly modern communication device miniaturization such as mobile phone, bluetooth earphone, also have electro-acoustic products such as hearing aids, these product requirement volumes are more and more littler, and common condenser microphone volume is bigger, sensitivity is not high, and product reliability and life-span are lower, and particularly the installation in the miniaturized electronics is more difficult carries out.

Summary of the invention

The purpose of the utility model product is to avoid above-mentioned deficiency of the prior art and a kind of volume of providing is little, interference free performance is high, the life-span is long, wide frequency range, the good microphone of damping performance highly sensitive and easy for installation.

The purpose of this utility model can realize by following technical scheme: the square electret capacitor microphone comprises shell, advance the sound mouth, electret capacitor, it is characterized in that electret capacitor comprises the vibrating diaphragm group, pad, back pole plate, the ambroin ring, the wiring board group, supporting steel plate, the field effect multiple tube, in square shell, place a vibrating diaphragm group, put a pad then into, put into the ambroin ring again, in the ambroin ring, put into back pole plate, lean on the into middle semicircle orifice that dashes of sound mouth bottom plate at back pole plate, and at back pole plate surface subsides field effect multiple tube, cover the wiring board group, cover supporting steel plate, then rear casing is connected encapsulation with front casing, advances the sound mouth and be installed on the sound inlet place.

In the wiring board group, paste an IC chip.

In the wiring board group, can also add 1～2pcs electric capacity.

Shell adopts the full-shield square shell.

The IC chip adopts high-gain electret capacitor microphone application-specific integrated circuit chip amplifying circuit.The utility model has following advantage compared to existing technology:

1, little, in light weight, the easy for installation damping performance of cuboid overall volume is good, is convenient to the complete machine miniaturization:

2, adopt full-shield housing designs interference free performance height, particularly frequency electromagnetic waves;

3, adopt high-gain ECM application-specific integrated circuit chip amplifying circuit, sensitivity can reach-32dB about;

Advantages such as 4, product structure is simple, volume is small and exquisite, dependable performance.

Description of drawings

Fig. 1 is the utility model part shape assumption diagram;

Fig. 2 is the utility model stereogram;

Fig. 3 is the utility model front view;

Fig. 4 is the utility model right view;

Fig. 5 is the utility model wiring board group front view;

Fig. 6 is the utility model wiring board group right view;

Fig. 7 is the utility model circuit theory diagrams.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, provide a specific embodiment of the present utility model, in square lower casing 1, place a vibrating diaphragm group 2, then put into a pad 3, again put into ambroin ring 5, put into back pole plate 4 at ambroin ring 5, lean on the into middle semicircle orifice 12 that dashes of sound mouth 10 bottom plates at back pole plate 4, and paste field effect multiple tubes 6, cover wiring board group 7, cover supporting steel plate 8, then lower casing 1 be connected encapsulation with last shell 9 on back pole plate 4 surface, advance sound mouth 10 and be installed on sound inlet 11 places.At wiring board group 1 binding IC chip 13.

Claims

1, a kind of electret capacitor microphone comprises shell, advance the sound mouth, electret capacitor, advance the sound mouth and be installed on the sound inlet place, it is characterized in that electret capacitor comprises the vibrating diaphragm group, pad, back pole plate, the ambroin ring, the wiring board group, supporting steel plate, the field effect multiple tube, and combination in the following manner: in square shell, place a vibrating diaphragm group, put a pad then into, put into the ambroin ring again, in the ambroin ring, put into back pole plate, lean on the into middle semicircle orifice that dashes of sound mouth bottom plate at back pole plate, and paste the field effect multiple tube on the back pole plate surface, cover the wiring board group, cover supporting steel plate, then lower casing is connected encapsulation with last shell.

2, a kind of electret capacitor microphone according to claim 1 is characterized in that pasting an IC chip in the wiring board group.

3, a kind of electret capacitor microphone according to claim 1 is characterized in that can also adding 1～2pcs electric capacity in the wiring board group.

4, a kind of electret capacitor microphone according to claim 1 is characterized in that shell adopts the full-shield square shell.