CN2421788Y - Crystal indirect sound vibration type microphone - Google Patents
Crystal indirect sound vibration type microphone Download PDFInfo
- Publication number
- CN2421788Y CN2421788Y CN 00236305 CN00236305U CN2421788Y CN 2421788 Y CN2421788 Y CN 2421788Y CN 00236305 CN00236305 CN 00236305 CN 00236305 U CN00236305 U CN 00236305U CN 2421788 Y CN2421788 Y CN 2421788Y
- Authority
- CN
- China
- Prior art keywords
- metallic conduction
- conduction sheet
- crystal
- sound
- amplifying circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
The utility model relates to a crystal indirect sound vibration type microphone which comprises a PC board amplifying circuit, and an upper metal conducting slice is arranged on a shim above a lower cover; an amplifying circuit board is additionally arranged on the upper metal conducting slice, wherein, the bottom of which is connected with a crystal piezoelectric slice which is tightly connected with another metal conducting slice on the bottom, and the a welding spot on the negative electrode of the upper metal conducting slice is led to a welding spot on the negative electrode of the amplifying circuit board. A welding spot on the positive electrode of a lower metal conducting slice is led to a welding spot on the positive electrode of the amplifying circuit board, and a sound isolating foamed cotton is arranged between the amplifying circuit board and an upper cover. The utility model can generate oscillation on skins when contacted with human bodies during sound production, and acoustic wave vibration can be indirectly conducted to a crystal piezoelectric substance through skins to generate voltage which is then converted into audio output, so the utility model can isolate most sound except sound producing people.
Description
The utility model relates to transmitter, and concrete is the indirect acoustic shock type microphone of a kind of crystal.
Microphone is to accept acoustic vibration and be converted into the transmitter that acoustic signals is exported again, and existing microphone often is subjected to the interference of the background sound beyond the sounder sound.
The purpose of this utility model provides a kind of crystal piezoelectric substance that uses and accepts acoustic vibration indirectly and be converted into the microphone that acoustic signals is exported again, can produce on the skin of vibration when this microphone is affixed on the human body sounding, acoustic vibration conducts to crystal piezoelectric substance generation voltage indirectly through skin and is converted to audio frequency output again, and this microphone can be isolated the sound beyond most of sounder.
The purpose of this utility model is achieved in that
The indirect acoustic shock type microphone of a kind of crystal, comprise a PC plate amplifying circuit, it is characterized in that: there are a loam cake and a lower cover in its outside, skin subsides with lower cover and user are touched, a pad is put in the top of lower cover, in putting metallic conduction sheet on the pad, last metallic conduction sheet top adds a magnification circuit plate, and connect a crystal piezoelectric patches in last metallic conduction sheet below, another metallic conduction sheet is down connected airtight in crystal piezoelectric patches below, there is a negative pole solder joint to cause negative pole solder joint on the magnification circuit plate in last metallic conduction sheet, and have an anodal solder joint to cause anodal solder joint on the magnification circuit plate in following metallic conduction sheet, and between magnification circuit plate and loam cake, put a sound insulation foam, in order to withstand magnification circuit plate and sound insulation; Lower cover, pad, and following metallic conduction sheet between form a confined space, and being affixed on human body, lower cover can produce on the skin of vibration when the sounding, sonic vibration reaches lower cover via skin, vibrate the air in the confined space again, indirect transfer produces the living potential difference of sound press and forms acoustic signals to the crystal piezoelectric patches, conducts to the amplification of PC plate amplifying circuit via upper and lower metallic conduction sheet and acoustic signals is presented away again.
Wherein also can add the noise that foam or collodion filter high and low frequency between lower cover and following metallic conduction sheet, the function of desirable advance (shenglvehao)for another sheet of holding concurrently.
The utility model has following actively useful effect:
This product utilization acoustic wave energy transmits the characteristic that distance becomes how much inverse ratios with sound wave, use piezoelectric substance try one's best the skin vibrations of sounder, acoustic vibration to the crystal piezoelectric substance that conducts sounder indirectly by airtight air produces potential difference and exports acoustic signals again, so skin acoustic vibration position of the extremely close sounder of the crystal piezoelectric substance of microphone, and away from the background source of sound, (see through airtight air) institute absorbs the acoustic vibration of the acoustic vibration of sounder much larger than the absorption background sound indirectly, so can isolate the background sound of the overwhelming majority, only absorb sounder sound and constitute one, isolate or eliminate most background sources of sound, form a good microphone or a pick-up that not disturbed by background sound.
Now in conjunction with the accompanying drawings:
Fig. 1 is the structural representation of the utility model one embodiment.
Accompanying drawing number:
1. loam cake 2. lower covers 3. hollow pads
4. go up metallic conduction sheet negative pole solder joint on the metallic conduction sheet 41.
5. magnification circuit plate
51. the anodal solder joint of magnification circuit plate negative pole solder joint 52. magnification circuit plates
6. crystal piezoelectric patches
7. descend the anodal solder joint of 71. times metallic conduction sheets of metallic conduction sheet
8. sound insulation foam or Poly Foam
As shown in drawings, there are a loam cake 1 and a lower cover 2 in the microphone outside, skin subsides with lower cover and user are touched, a hollow pad 3 is put in the top of lower cover, in putting metallic conduction sheet 4 on the pad, last metallic conduction sheet top adds a magnification circuit plate 5, and connect a crystal piezoelectric patches 6 in last metallic conduction sheet below, another metallic conduction sheet 7 is down connected airtight in crystal piezoelectric patches below, and there is a negative pole solder joint 41 to cause negative pole solder joint 51 on the magnification circuit plate 5 in last metallic conduction sheet 4, and have an anodal solder joint 71 to cause anodal solder joint 52 on the magnification circuit plate 5 in following metallic conduction sheet 7, and in magnification circuit plate 5 and loam cake 1 storing, one sound insulation foam or Poly Foam 8 in order to withstand magnification circuit plate and to produce soundproof effect; Lower cover 2, hollow pad 3 and 7 of following metallic conduction sheets form a confined space, can produce on the skin of vibration when people's sounding and lower cover pasted to touch, sonic vibration reaches lower cover via skin, vibrate the air in the confined space again, indirect transfer produces the living potential difference of sound press and forms acoustic signals to the crystal piezoelectric patches, conducts to the amplification of PC plate amplifying circuit via upper and lower metallic conduction sheet and positive and negative electrode solder joint and acoustic signals is presented away again.It can produce potential difference when utilizing the crystal piezoelectric element to accept vibration pressure, and the acoustic vibration energy becomes the physical characteristic of how much inverse ratios with the transmission distance, can produce the skin of acoustic vibration when making the crystal piezoelectric element try one's best the health sounding, and utilize air indirectly conduction receive this vibration and give birth to voltage and be converted to sound signal output again.
Can put a sound insulation foam or a Poly Foam between the amplifying circuit PC plate of crystal piezoelectric element top and loam cake, and the crystal piezoelectric element is the skin of acoustic vibration during much larger than distance human body sounding apart from the background source of sound, so most vibration pressures that the crystal piezoelectric element is accepted come from sounder, so the background source of sound of the overwhelming majority can be isolated or eliminate to the design of this formula microphone.
Claims (2)
1. indirect acoustic shock type microphone of crystal, comprise a PC plate amplifying circuit, it is characterized in that: there are a loam cake and a lower cover in its outside, skin subsides with lower cover and user are touched, a pad is put in the top of lower cover, in putting metallic conduction sheet on the pad, last metallic conduction sheet top adds a magnification circuit plate, and connect a crystal piezoelectric patches in last metallic conduction sheet below, another metallic conduction sheet is down connected airtight in crystal piezoelectric patches below, there is a negative pole solder joint to cause negative pole solder joint on the magnification circuit plate in last metallic conduction sheet, and have an anodal solder joint to cause anodal solder joint on the magnification circuit plate, and between magnification circuit plate and loam cake, put one in order to withstand the sound insulation foam of magnification circuit plate and sound insulation in following metallic conduction sheet.
2. the indirect acoustic shock type microphone of crystal as claimed in claim 1 is characterized in that: wherein also can add the noise that foam or collodion filter high and low frequency between lower cover and following metallic conduction sheet, the function of desirable advance (shenglvehao)for another sheet of holding concurrently.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 00236305 CN2421788Y (en) | 2000-05-23 | 2000-05-23 | Crystal indirect sound vibration type microphone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 00236305 CN2421788Y (en) | 2000-05-23 | 2000-05-23 | Crystal indirect sound vibration type microphone |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2421788Y true CN2421788Y (en) | 2001-02-28 |
Family
ID=33597867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 00236305 Expired - Fee Related CN2421788Y (en) | 2000-05-23 | 2000-05-23 | Crystal indirect sound vibration type microphone |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2421788Y (en) |
-
2000
- 2000-05-23 CN CN 00236305 patent/CN2421788Y/en not_active Expired - Fee Related
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |