Condenser microphone using space efficiently and having no characteristic variations
A condenser microphone and space technology, applied in the direction of electrostatic transducer microphone, diaphragm structure, planar diaphragm, etc., can solve the problem that it is impossible to reduce the space, the space cannot be effectively used, and the internal space of electronic products is not effectively used. and other problems, to achieve the effect of improving sensitivity and preventing characteristic changes
Inactive Publication Date: 2005-03-16
SAMBU COMMUNICS +1
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Problems solved by technology
However, the horizontal section of the housing is always kept circular, so the internal space of the electronic product is not effectively utilized
[0014] That is, a space that allows a condenser microphone to be placed inside each electronic product such as a mobile phone or a PDA is formed at the end of the electronic product to have a rectangular shape, but the horizontal section of the condenser microphone maintains a circular shape, thereby The space of the rectangular shape cannot be used efficiently
In particular, since the size of the horizontal section of the condenser microphone must be equal to or larger than a certain size to obtain an appropriate response sensitivity to sound waves, the reduction of the diameter of the condenser microphone is limited, and thus it is impossible to reduce the diameter of the condenser microphone in the prior art. Space occupied by condenser microphones within electronics
Method used
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[0039] figure 1 is a perspective view showing a condenser microphone according to the present invention. In this condenser microphone, a diaphragm plate, a diaphragm, a spacer, a substrate, a back plate, a connecting ring and a PCB 1 are sequentially put into a housing 8 made of metal such as soft brass, Its horizontal section is in the shape of an elliptical or racetrack-shaped container, and then the uppermost edge of the housing 8 is bent inwards and holds the components.
[0040] Patterns for soldering of various components including FETs are formed on the bottom of the PCB 1 , and patterns 1 a and 1 b for electrical connection with the PCB of electronic products are formed on the top of the PCB 1 . In this case, the reason why the via hole is formed on the PCB 1 is to fix the FET.
[0041] Refer below Figures 2 to 5 The structure of the condenser microphone is described in detail.
[0042] The housing 8, in which a plurality of sound inlets are formed through a horiz...
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According to the present invention, the horizontal sections of the components of the condenser microphone are formed in an elliptical or a running track shape while the area of a diaphragm responding to sound pressure is maintained to be equal to or larger than a certain size, thus preventing a reduction in sensitivity to sound pressure as well as occupying the minimum internal space of each of various electronic products that trend toward miniaturization and thinness. Furthermore, a circular raised portion is formed at the center of the horizontal part of the casing, or a groove having an arcuate, triangular or rectangular section is formed on the horizontal part of the casing, so that the flatness of the casing and the gap between a diaphragm and a backplate are uniformly maintained, thus preventing the variations in the characteristics of the condenser microphone.
Description
technical field [0001] The present invention generally relates to a condenser microphone for converting a change in electrostatic capacity caused by sound pressure into an electric signal. In particular, the present invention relates to an elliptical condenser microphone which effectively utilizes space and has no characteristic variation, wherein its horizontal section is formed into an ellipse, thereby preventing a decrease in sensitivity to sound pressure and being suitable for use in various electronic devices which tend to be small and thin. Each of the products takes up minimal interior space. Also, the present invention relates to an elliptical condenser microphone which effectively utilizes space and has no variation in characteristics, wherein a circular or elliptical protruding portion, or a circular, triangular or rectangular groove is formed on the horizontal portion of the housing, thereby The flatness of the housing and the gap between the diaphragm and the rear...
Claims
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IPC IPC(8): H04R7/04H04R19/04
CPCH04R7/04H04R19/04
Inventor 金周筵
Owner SAMBU COMMUNICS