JP3103674U - Touch-type indirect conduction vibration type microphone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the waterproofness, antifouling / earthquakeproofing, and durability with easy arrangement, high sensitivity and excellent communication quality.
SOLUTION: An anti-vibration gel material 20 is installed inside a main body 10 connected to one fixing device, and has a single concave tank 21 at the center of the top of the anti-vibration gel material 20 and a convex flange outward. 22, there is a small convex column 23 at the bottom, a condenser type microphone 30 is installed inside the concave tank 21, and a gas-permeable sponge 40, a double-sided tape 50 and a top cover The air-permeable sponge 40 is fixed to the bottom surface of the upper lid 60 by a double-sided tape 50, and the lid surface of the upper lid 60 has a thickness of one of the upper lid 60 and the vibrating film piece 61 of each wall thickness of the main body 10. Much smaller than that.
[Selection diagram] Fig. 1

Description

  The present invention can be applied to a user's throat, face, etc. to measure the pronunciation of the vocal cords, or applied to a similar doctor's stethoscope, for example, the sound of the human abdomen or the vibration sound of the wall. Touch-type indirectly-conductive vibration type microphone that can detect solid vibration sound such as etc., achieve better communication effect than conventional microphones, and improve waterproof, dustproof, antifouling and convenience. Things.

  Conventional microphones generally used include the following two types in terms of a method of measuring a voice frequency.

(1) Air vibration type microphone The measuring principle is that a measurement film piece in the microphone vibrates due to a change in vibration of air pressure. The film piece changes the position of the film piece in synchronization with the magnitude of the oscillating pressure and the speed of the frequency, and converts the energy of the change in the position of the film piece into an electrical change (signal).

(2) Inertial Vibration Microphone The principle of measurement is that the change in the position difference between the outer shell of the measuring object and the internal “measuring mass” is changed into an electric signal. In other words, once the external energy is transmitted to the outer shell of the measuring object, this sufficient energy sufficiently drives the heavier mass of the measuring object, causing the outer shell to change the inner measuring mass and positional fluctuation. The generated energy is converted into an electric signal.

(1) In the case of an air vibration type microphone, when it is used, other sound sources in the space are picked up, so unnecessary noise is generated in the communication content, and the environment often becomes noisy, or In high-speed sports such as motorcycle, parachute, and glider operations, the communication quality is affected (the sound of cutting off the wind is extremely loud), and in severe cases, safety may be affected.

(2) In the case of the inertial vibration type microphone, at present, the problem is that the environmental sound is too noisy (during atmospheric pressure), so when using the "air vibration type microphone", the theme that humans inevitably occurred. There is a disadvantage that the sound cannot be clearly expressed. Therefore, it is converted to an "inertial vibration type microphone" having a large energy vibration, and a physical direct touch vibration is made in the vicinity of the throat vocal cord having the maximum vibration energy. In addition, since most of the body composition is liquid, sufficient energy is directly conducted to the microphone by touch conduction, and the external air vibration energy drives the outer shell of the inertial vibration type microphone due to its lack of mass. Therefore, even when used in a noisy environment, it is possible to express a human theme sound without being affected by spatial noise. However, the disadvantage of such a microphone is that it is often due to the vibrational energy generated by friction with clothing, articulation lines or other objects during use due to the fixing device of the microphone itself, or the surface shell. After the outer shell of the measuring instrument is vibrated, it is measured by inertial vibration, leading to congestion of the theme sound and affecting communication contents.

The present invention has been made in view of the above points, and the present invention has exhaustively devised a design, prototyped and corrected the disadvantages of the above-mentioned general-purpose microphone, and finally produced a completed real sample. In a test, we succeeded in developing a kind of "touch-type indirect conduction vibration type microphone".
In other words, the present invention is a touch-type indirect conduction vibration type microphone, in which a vibration damping gel material is installed inside a main body to which one fixing device is connected, and a center is located at the top center of the vibration damping gel material. It has two concave tanks, and has a convex flange on the outside, a convex column on the bottom, a condenser type microphone installed inside the concave tank, and a gas-permeable sponge, double-sided tape on the top of the damping gel material in order. And the upper lid is provided, the air-permeable sponge is fixed to the bottom surface of the upper lid by double-sided tape, the lid surface of the upper lid is that the thickness of one is much smaller than the diaphragm piece of the upper lid and each body wall thickness It is a feature.
Further, the present invention is characterized in that in the touch-type indirect conduction vibration type microphone described above, the main body, the upper lid, and the vibration damping gel material are integrally solid, and the vibrating membrane piece is fixed.

  The present invention can effectively solve the disadvantages of various fields such as the quality, protection effect and durability of commonly used microphones with a new mechanism, and it is easy to arrange, high sensitivity and excellent communication quality Thus, specific effects such as waterproofing, antifouling / seismic proofing, and high durability can be enhanced.

Hereinafter, a preferred embodiment of a touch-type indirect conduction vibration type microphone according to the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the present invention has a vibration-damping gel material (suitable to be made of a material such as silicone gel, rubber, etc.) inside a main body 10 having one fixing device 11 connected to the upper part. 20 are installed. At the center of the top of the vibration damping gel material 20, one concave groove 21 is formed, a convex portion 22 is formed on the outside, and a slight convex column 23 is formed at the bottom. Inside the concave groove 21, a condenser type microphone 30 is installed. Separately, an air-permeable sponge 40, a double-sided tape 50, and an upper lid 60 are provided on the top of the vibration-damping gel material 20, respectively. The air-permeable sponge 40 is fixed to the bottom surface of the upper lid 60 by a double-sided tape 50, and the lid surface of the upper lid 60 has a thickness from the upper lid 60 and the vibrating membrane piece 61 having the thickness of each wall surface of the main body 10. Are also much smaller.

  First, the principle of measuring the audio frequency according to the present invention will be described. As shown in FIG. 2, the material of the vibrating film piece 61 (that is, the upper lid 60) is not a substance that is easily vibrated by air vibration energy generated in a workplace of a human. However, it must be a material that easily vibrates due to liquid vibration energy generated in the vocal cords of the human throat. Generally, the material we can obtain is a resilient material such as rubbers. The surface of the vibrating film piece 61 is one measurement surface (for example, part A in FIG. 1), and once the measuring surface A induces sufficient liquid vibration energy, the vibrating film piece 61 is moved up and down (for example, by a chain line). (As shown), or by changing the vertical position thereof, the atmospheric pressure in the “pressure fluctuation space” (for example, part B in FIG. 2) is changed. The change in air pressure is caused by pushing the measurement film piece 31 in the condenser type microphone 30 by pressing air molecules, thereby changing the position of the measurement film piece 31 and making a vertical change. Converts the energy changed at that position into an electric signal, and the electric signal changes in synchronization with the vibration width of the vibrating film piece 61. In relation to the anti-vibration gel material 20, it can be used to prevent vibration of the non-measurement surface, and can maintain one stable pressure by providing a pressure fluctuation space.

  Therefore, in the present invention, "touch-type indirect conduction vibration type microphone" is referred to as "indirect" in that meaning, that is, it converts liquid vibration energy of greater energy into air vibration energy, The purpose of the present invention is to achieve the purpose of liquid vibration measurement by converting energy with an air vibration type microphone.

  When applied, when measuring muscle vibrations near the vocal cords (including vibrations of the face / throat, lungs, or the entire head) when used for human vocal cord vibrations, liquid vibration measurement is better than inertial vibration measurement. Is also good. The causes are: The source is liquid vibration. 2. The measurement surface A is only one surface, and the entrance of vibration energy of other non-sources can be prevented. 3. Since it is not an inertial vibration measurement, it can therefore be prevented from the fixture or outer shell of the measuring instrument. Vibration energy generated when rubbing against clothing, articulation lines or other objects is measured by inertial vibration after vibrating the outer shell of the measuring instrument.

The reason why the present invention can prevent the entry of “inertial vibration energy” will be described.
Looking at the mechanism of the present invention (see FIG. 1), the embodiment shown in the figure is a schematic view of the mechanism during application and mass production (it is not an absolute and only method). The material used for the vibrating membrane piece 61 is one solid-state material, and its thickness is exactly one after the vibration of the throat vibration energy, and then generates one moderate pressure change in the pressure fluctuation space B to produce the condenser type. The microphone 30 is made to measure and one suitable thickness of air energy is stopped as much as possible. The vibrating membrane piece 61 also allows the use of the above-described gel material having high elasticity, can be formed into a liquid capsule having a large thickness, makes the energy transmission of the liquid vibration advantageous, and has a weak energy. It is possible to stop the state vibration from entering the pressure fluctuation space B.

  The operation of the air permeable sponge 40 is as follows. The vibration sound and return sound in the pressure fluctuation space B are extinguished. 2. The amount of air in the pressure fluctuation space B is reduced as much as possible, so that most of the energy is transferred to the condenser type microphone 30 so that air molecules are not pressed against each other. 3. Once the air permeable sponge 40 is bonded to the vibrating film piece 61 with the double-sided tape 50, the vibrating film piece 61 has an action of preventing the invasion of air vibration energy from the elastic gas-permeable gas sponge 40. In addition, when the hard vibrating film piece 61 is used, the self-gradation of the vibrating film piece 61 can be prevented. However, under the condition of liquid vibration, the sponge can be deformed. Therefore, the liquid vibration energy easily deforms the gas permeable sponge 40, thereby forming the pressure fluctuation space B in the gap of the sponge, and forming the vibrating film piece 61. , And the condenser type microphone 30 can measure the change in the energy.

  The pressure in the pressure fluctuation space B can be maintained separately by the adhesiveness of the convex flange 22 of the vibration-damping gel material 20 and the adhesiveness of the gel-like material and the double-sided tape 50 above it. The pressure isolating seal gel C below 30 constitutes a pressure stable holding of the pressure fluctuation space B.

  The material of the vibration damping gel material 20 is an elastic, air-impermeable, gel-like material. The pressure fluctuation space B is provided to form a space unaffected by one external pressure energy. 2. The inertial thrust energy transmitted from the outer shell (the main body 10 and the upper lid 60) is transmitted to the condenser type microphone 30. In principle, the main measuring energy of the condenser type microphone 30 is that the air vibration energy drives the measuring membrane piece 31 therein. However, the measurement film piece 31 also has a mass (the mass is much smaller than the mass of the inertial vibration type microphone). Therefore, once the vibration energy of the external world is transmitted to the outer shell, a part of the outer shell vibration energy can be absorbed through the action of the vibrated gel material 20 and the bottom convex column 23, and the condenser type microphone 30 Inertial vibration applied to the measuring film piece 31 can be reduced.

  The main body 10 and the upper lid 60 are also outer shells of the present invention, whose main purposes are It is relatively strong to prevent destruction, and is made of a material that is waterproof, heat-resistant, external-force-resistant, chemically eroded and the like, and can be hard, but may be a suitable soft material. 2. After treatment with the waterproof seal gel D at the joint of the two parts, a stable waterproof property is achieved and the internal mechanism has high durability. 3. The fixing device 11 is connected by using the main body 10, and at the same time, the main body 10 and the upper lid 60 also prevent the inertial vibration and isolate the substance by the atmospheric pressure, and use the integral molding method to form the main body 10 and the upper lid 60 and the vibration damper. The gel materials 20 are put together. The vibrating film piece 61 is fixed by an appropriate method. Further, the mechanism type of the present embodiment having the same effect is also suitable for a method of a relatively general production technique.

  The fixing device 11 is adapted to be manufactured from a flexible elastic material, formed in a C shape, or otherwise loosened and appropriately hooked at a portion such as a neck portion or a face portion, for example, as shown in FIG. it can.

  The method of use of the present invention is generally applied to the throat, face, cheek, and the like when used to pronounce human vocal cords. It can also be used to measure stethoscopes for doctors, the sound of a human abdomen, or the measurement of solid vibrations such as wall vibrations. For example, as shown in FIG. 4, the present invention is attached to a human throat using a C-shaped fixing device 11, and the principle of the attachment is that the entire measurement surface A of the present invention is attached to the body. Is optimal. If the bonding force is strong, the measurement is slightly large, and the measurement energy of the liquid vibration is the outer shell (including the main body 10 and the upper lid 60) without changing the measurement energy due to the change in the surface pressure of the measurement surface A. Squeezed toward the measurement surface A, the outer shell gains more weight there, and the measurement surface A gains a larger energy difference with the inner mechanism wrapped in the outer shell, increasing the measurement sensitivity. I do.

FIG. 4 is a sectional view of the mechanism of the present invention. FIG. 2 is a simplified structural view of a part of the present invention. FIG. 3 is a perspective view of an embodiment of the present invention. It is an explanatory view of a use state of the present invention.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 10 ... Main body 11 ... Fixing device 20 ... Vibration suppression gel material 21 ... Concave tank 22 ... Convex flange 23 ... Convex column 30 ... Condenser type microphone 31 ... Measurement Film piece 32 ... Variable energy switch 40 ... Air permeable sponge 50 ... Double-sided tape 60 ... Top lid 61 ... Vibrated film piece A ... Measurement surface B ... Pressure fluctuation space C・ ・ ・ Atmospheric isolation seal gel D ・ ・ ・ Waterproof seal gel

Claims (2)

A touch-type indirect conduction vibration type microphone,
Install the vibration damping gel material inside the main body connecting one fixing device,
There is one concave tank at the top center of the vibration damping gel material, and there is a convex flange on the outside, there is a convex column at the bottom,
Install a condenser type microphone inside the concave tank,
On the top of the damping gel material, an air permeable sponge, double-sided tape and an upper lid are provided in order,
The air permeable sponge is fixed to the bottom of the upper lid with double-sided tape,
The lid surface of the upper lid is characterized in that one thickness is much smaller than the vibrating membrane piece of the upper lid and each wall thickness of the main body,
Touch-type indirect conduction vibration type microphone. The touch-type indirect-conduction vibration type microphone according to claim 1, wherein the main body, the upper lid, and the vibration damping gel material are solid, and the vibrating film piece is fixed.

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