CN2209417Y

CN2209417Y - Contact type mediately trausferring vibration microphone

Info

Publication number: CN2209417Y
Application number: CN 94219868
Authority: CN
Inventors: 刘绍卿
Original assignee: 彭仁城
Priority date: 1994-08-27
Filing date: 1994-08-27
Publication date: 1995-10-04
Anticipated expiration: 2004-08-27

Abstract

The utility model relates to a microphone, particularly a microphone which is used in the tumultuous environment. A rubber-material core for suppressing vibration is arranged in a body, the center of the top part of the rubber-material core for suppressing vibration is a groove, the outer margin of the top part of the rubber-material core for suppressing vibration is provided with a flange, and the bottom of the rubber-material core for suppressing vibration is provided with a plurality of convex columns. An air permeation bubble-cotton layer which is connected with a double-faced film is placed in the groove. An upper cover which is fixed on the groove through the double-faced film is also provided. The top surface of the upper cover is a vibrated film whose thickness is inner than each wall of the upper cover and the body. Furthermore, a capacitor type microphone is arranged in the groove. Consequently, the communicating quality and effect are great, and the water, the vibration and the pollution are prevented.

Description

Contact type mediately trausferring vibration microphone

This is practical to relate to a kind of microphone, especially refers to the microphone of the environment that is used to make a lot of noise.

At present, existing microphone can be divided into two classes by the mode of detecting audio frequency:

One, air vibration formula microphone

Vibration by air pressure changes, vibrates the detecting diaphragm in the microphone, this diaphragm is along with the pressure size and the frequency speed of vibration, the synchronous variation of diaphragm position, its energy can convert this microphone of electric variation (signal) in use, also can receive other source of sound in space, make Content of communciation produce unnecessary assorted signal, especially the environment of Chao Naoing or drive motor-driven, jump pole, drive during the Xiang wing etc. moves at a high speed, all severe noise can occur, even influence safety.

Two, inertial vibrative microphone

Change by the alternate position spike between the detecting body case existing inner " detecting quality ", and convert electrical signal to, that is, when outside energy conducts to the shell of detecting body, promote the heavier quality of detecting body with enough energy, make shell to detect quality and produce shift in position, this change power conversion is become electrical signal with portion; Mike's wind energy of this pattern overcomes the noise of environment, and by near the throat vocal cords that have the maximum vibration energy, do the direct contact vibration of the human body, major part because of the human body consists of liquid again, enough energy directly can be contacted mark to this microphone, and extraneous air vibration energy, but because of its mass deficiency, to promote the shell of inertial vibrative microphone, therefore, even also unaffected at the environment of making a lot of noise.Yet, because of the fixture or the surperficial housing of microphone itself, in use because the vibrational energy that is produced with clothes, connecting line or the friction of other objects, after having vibrated the detector shell, and detected by inertial oscillation, the theme sound that causes confusion influences Content of communciation.

In addition, the purpose of this utility model provides the indirect conduction vibration type of a kind of contact microphone, has both had by the vibrating diaphragm sheet, but have the glue of shaking material core again, can not disturbed by noise, not influenced by the fricative vibration of other object, make the theme sound clear, improve communication effect.

The purpose of this utility model is achieved in that the indirect conduction vibration type of a kind of contact microphone comprises the body that is connected and fixed device and interior Electret Condencer Microphone thereof, it is characterized in that: but in body interior the one glue material core that shakes is set, but the glue material core center of top of should shaking is a groove, its top outer rim has flange, and its bottom has several projections, in above-mentioned groove, place ventilative foamed cotton layer, on this ventilative foamed cotton layer, connect a two-sided film, also not with double coated film loam cake fixed thereon, this upper cover top surface is by the vibrating diaphragm sheet, this is compared loam cake by the thickness of vibrating diaphragm sheet, each wall of body is thin, in addition, Electret Condencer Microphone is arranged on above-mentioned inside grooves.Glue material core and body are formed in one but above-mentioned loam cake shakes, and above-mentionedly are connected with body by the vibrating diaphragm sheet.

Owing to adopt such scheme: can obtain clear and definite more communication effect, and can waterproof and dustproof, anti-pollution.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 the utility model exemplary embodiments cutaway view.

The detecting structure schematic diagram of Fig. 2 the utility model exemplary embodiments.

The outside drawing of Fig. 3 the utility model exemplary embodiments.

The user mode figure of Fig. 4 the utility model exemplary embodiments.

Among the figure: 10, body 11, fixture 20, but shake glue material core 21, groove 22, flange 23, projection 30, Electret Condencer Microphone 31, detecting diaphragm 32, change energy converter 40, ventilative foamed cotton layer 50, double coated film 60, loam cake 61, by vibrating diaphragm sheet A, detecting face B, pressure oscillation space C, air pressure is isolated sealing D, the waterproof sealing

Consult shown in Figure 1, present embodiment comprises the body 10 that is connected and fixed device 11, but shake glue material core 20(with silica gel body 10 inner settings, materials such as rubber are made), but glue material core 20 center of top of should shaking have a groove 21, the outside has flange 22, the face bottom has some projections 23, in groove 21 inside Electret Condencer Microphone 30 is set, but the coating gas foamed cotton layer 40 in regular turn then at the top of the glue material core 20 that shakes in addition, double coated film 50 and loam cake 60, wherein ventilative foamed cotton layer 40 mat double coated films 50 and being fixed under the end face of loam cake 60, the end face of loam cake 60 are as thin as a wafer much thin more than the wall of other wall of loam cake 60 and body 10 by vibrating diaphragm sheet 61().

Consult shown in Figure 2ly, the audio frequency of present embodiment detecting principle is described below:

By the end face of vibrating diaphragm sheet 61(that is loam cake 60) material for not to be subject to the material of air vibration, but be subject to the liquid state vibration that human body throat vocal cords are sent, material commonly used is as the elastic material of rubber and so on; By the surface of vibrating diaphragm sheet 61 is a detecting face (as A place among the figure), when detecting face A responds to enough liquid vibrational energies, by vibrating diaphragm sheet 61 and change on it, upper/lower positions (shown in dotted line), again because of on it, the change of upper/lower positions, and changed the air pressure at " pressure oscillation space " (as mark B place among the figure), the variation of this air pressure has promoted the detecting diaphragm 31 in the capacitance microphone 30 by pushing of air molecule, the position of detecting diaphragm 31 is done, the following variation, the change energy converter 32 of its below, just the power conversion with its position change becomes electrical signal, and this electrical signal is promptly along with being made synchronous change by the Oscillation Amplitude of vibrating diaphragm sheet 61, face upward the glue material 20 that shakes and play the vibration that prevents non-detecting face, and make the pressure oscillation space have a pressure stable to keep.

Of the present utility model is to convert the gas vibrational energy to than the liquid vibrational energy of macro-energy, to allow gaseous state oscillatory type microphone do the conversion of energy, vibrates the purpose of detecting and reach liquid state.

When muscle vibrates the detecting occasion of (comprising the vibration of face, throat, lung or whole head) near the vocal cords that constituted of human body sounding band vibration, liquid vibration detecting is to be better than inertial oscillation detecting person, 1), sound generation source is liquid vibration its reason:, 2), detecting face A, just simultaneously, the vibrational energy that can prevent other non-sound generation source enters, 3) can prevent fixture or external shell by this detector, because the vibrational energy that is produced during with clothes, connecting line or the friction of other object, after having vibrated the detector shell, and detected by inertial oscillation.

This enforcement can prevent that the reason that the inertial oscillation energy enters is described as follows:

As shown in Figure 1, by vibrating diaphragm sheet 61 employed materials is a solid-state material, and its thickness just in time can be by after the laryngeal vibration, producing an appropriate air pressure change in the pressure oscillation space reaches does detecting for Electret Condencer Microphone 30, an and suitable thickness that stops the gaseous state energy as far as possible, this be can be the elastic colloid material by vibrating diaphragm sheet 61, also can be a sheet of liquid capsule, to more help the energy conduction of liquid vibration, and can stop the more weak gaseous state vibration of energy to enter in the pressure oscillation space B.

Acting as of ventilative foamed cotton layer 40: 1) eliminate pressure oscillation space B interior resonance sound and echo.2) reduce the interior air capacity of pressure oscillation space B as much as possible, and make most of energy be conducted in the Electret Condencer Microphone 30, unlikely consumption is in the process that air molecule is pushed mutually, 3) when double coated film in ventilative foamed cotton layer 40 mats 50 with bonding by vibrating diaphragm sheet 61 after, can be by vibrating diaphragm sheet 61 by the ventilative foamed cotton layer 40 of this rubber-like colloid, obtain one and have more the effect that prevents that the air vibration energy from entering, also prevent when using hard by vibrating diaphragm sheet 61, by the self-resonance of vibrating diaphragm sheet 61, but under the situation of liquid state vibration, because of foam can be deformed, so liquid vibrational energy can be easily with foamed cotton layer 40 distortion of breathing freely, and make pressure oscillation space B between foam, and can follow by the amplitude of vibrating diaphragm sheet 61 to change, make Electret Condencer Microphone 30 can detect the variation of its energy.

Pressure in the space B of pressure oscillation keeps, but by flange 22 its colloids of the glue material core 20 that shakes, flexible and air-locked characteristic, bonding with the double coated film 50 of its top, and the air pressure of Electret Condencer Microphone 30 belows is isolated and can become the steady pressure of pressure oscillation space B to keep by glue C thing in addition.

But the material of the glue material core 20 that shakes is a material flexible, air-locked, colloid, and it act as: 1) provide the pressure oscillation space B to become one not by the space of ambient pressure energy affect.2) reduce the inertial oscillation energy of coming in and pass into Electret Condencer Microphone 30 by shell (being body 10 and loam cake 60) conduction; In principle, Electret Condencer Microphone 30 main detected energy have promoted the detecting diaphragm 31 of its inside for the air vibration energy, but because of this detecting diaphragm 31 also has quality (its quality is less than the quality of inertial vibrative microphone and little a lot), therefore, when the extraneous vibration energy reaches on the shell, via pressing down the effect of glue material core 20, the shell vibrational energy of a part can be sponged, and the detecting diaphragm 31 that reduces Electret Condencer Microphone 30 adds all inertial oscillations with its bottom projection 23.

" shell " of body 10 and loam cake 60 that is present embodiment, its main purpose is for providing present embodiment: 1) the more strong destructiveness that prevents, poor, the anti-external force of waterproof, the heatproof of material, resistance to chemical attack ... Deng, and can be hard, also can be soft suitable material.2) at the bonding method at this two position, after waterproof sealing D processing, can reach safe water proofing property, make internal structure have more durability.3) utilize body 10 to be connected with fixture 11, while body 10 and loam cake, can also inertial oscillation prevent and the air pressure isolated substance, utilize one-body molded mode, but body 10, loam cake 60 and the glue material core 20 that shakes are integrated, set firmly, equal effect is also arranged and be able to proper method by vibrating diaphragm sheet 61, as for the version of this example, be the method that is suitable for general production technology.

Fixture 11 is fit to can be made into C shape geometrical clamp with whippy material manufacturing, or other can be restrainted in the suitable shape at positions such as user's neck, head, as shown in Figure 3 for easily detaining.

The using method of present embodiment when being used to detect the human vocal chords pronunciation, can place throat, face, cheek etc. usually; Also can be used for tin letter that similar doctor uses, the solid vebrato of detecting human abdomen's sound or wall vebrato and so on.For example shown in Figure 4, utilize the fixture 11 of C shape present embodiment to be attached to people's throat position, it attaches principle should make present embodiment detecting face A fit all sidedly animally for best, and it is heavy slightly if attach strength, sensed quantity can be big, the detected energy of liquid vibration can because of shell (comprising body 10 and loam cake 60) when the detecting face A compressing, shell so obtained a bigger weight, the internal structure that the detecting face A of making can existing encase with shell has bigger energy potential difference, increases sensed quantity.

But body 10 can be made with loam cake 60 glue material core 20 modes of being formed in one of shaking, and then can be utilized adhesive or solvent gummed mode by vibrating diaphragm sheet 61, or utilizes ultrasonic waves fusion mode, or utilizes the bad shape housing of hard build-in mode etc. to be connected and fixed with body 10.

Claims

1, the indirect conduction vibration type of a kind of contact microphone, comprise the body that is connected and fixed device and interior Electret Condencer Microphone thereof, it is characterized in that: but in body interior the one glue material core that shakes is set, but the glue material core center of top of should shaking is a groove, its top outer rim has flange, and its bottom has several projections, in above-mentioned groove, place ventilative foamed cotton layer, on this ventilative foamed cotton layer, connect a two-sided film, also not with double coated film loam cake fixed thereon, this upper cover top surface is by the vibrating diaphragm sheet, this is compared loam cake by the thickness of vibrating diaphragm sheet, each wall of body is thin, and in addition, Electret Condencer Microphone is arranged on above-mentioned inside grooves.

2, by the indirect conduction vibration type of the described contact of claim 1 microphone, it is characterized in that: glue material core and body are formed in one but above-mentioned loam cake shakes, and above-mentionedly are connected with body by the vibrating diaphragm sheet.