CN202889618U - Novel skin contact piezoelectric type microphone - Google Patents
Novel skin contact piezoelectric type microphone Download PDFInfo
- Publication number
- CN202889618U CN202889618U CN 201220510908 CN201220510908U CN202889618U CN 202889618 U CN202889618 U CN 202889618U CN 201220510908 CN201220510908 CN 201220510908 CN 201220510908 U CN201220510908 U CN 201220510908U CN 202889618 U CN202889618 U CN 202889618U
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- circuit board
- piezoelectric
- substrate
- type microphone
- loam cake
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Abstract
The utility model discloses a novel skin contact piezoelectric type microphone, and relates to the sound equipment field. The novel skin contact piezoelectric type microphone includes an upper cover (1) and a lower cover (5). A storing space formed by the upper cover (1) and the lower cover (5) is provided with a substrate (3). A circuit board (4) is arranged below the substrate (3). A ceramic piezoelectric sheet (2) is arranged above the substrate (3). The ceramic piezoelectric sheet (2) is connected with the circuit board (4) via a signal line (7). Shielding lines (6) are arranged below the circuit board (4). The upper cover (1) is formed by TPU injection moulding. The novel skin contact piezoelectric type microphone is directly pasted on the skin via the upper cover, so a foam or spring which is arranged between a contact face and a piezoelectric element in a conventional contact piezoelectric type microphone is saved, and consequently the skin vibration can be received completely, and the practicality is strong.
Description
Technical field:
The utility model relates to a kind of microphone that can effectively completely cut off all background sounds beyond the theme source of sound, is specifically related to a kind of novel skin contact piezoelectric mic.
Background technology:
Traditional Electret Condencer Microphone, mainly be to collect the sound that source of sound is sent take air as medium, but because the noise of surrounding enviroment, also can see through in the lump air along with the sound of source of sound and collected by Electret Condencer Microphone, therefore, Electret Condencer Microphone is not suitable for use in the noisy environment.In addition, in some airborne particular application that can hinder sound such as the speaker with mouth mask, breathing mask, all cover safety cap etc., Electret Condencer Microphone is also inapplicable.
Another existing contact piezoelectric microphone can effectively solve the aforesaid drawbacks of Electret Condencer Microphone.Contact piezoelectric microphone is the sound with the speaker, vibrations via body skin, muscle, bone, and collected by the microphone of being close to skin, owing to being not as propagation medium take air, therefore contact piezoelectric microphone can effectively avoid the noise of surrounding enviroment, also is fit to very much simultaneously the occasion with mouth mask, breathing mask, all cover safety cap etc.But this contact piezoelectric microphone common device between shell and piezoelectric ceramic has a kind of cushion, for example foam or spring, be sent to the vibration of shell from skin, bone with induction, can sponge further that high-frequency sound produces, quite trickle high-frequency vibration originally, therefore have serious distortion situation at HFS.
The utility model content:
The purpose of this utility model provides a kind of novel skin contact piezoelectric mic, and it can overcome the drawback of prior art, allows the most of background noise except the user all be attenuated eliminating, and is practical.
In order to solve the existing problem of background technology, the utility model is by the following technical solutions: it comprises loam cake 1, lower cover 5, in the accommodation space of loam cake 1 and lower cover 5 formation, be provided with substrate 3, be provided with circuit board 4 in the lower end of substrate 3, be provided with piezoelectric ceramics sheet 2 in the upper end of substrate 3, piezoelectric ceramics sheet 2 is connected connection by holding wire 7 with circuit board, be provided with shielding conductor 6 in the lower end of circuit board 4.
Described loam cake 1 adopts TPU injection molded.
The utility model piezoelectric ceramics sheet 2 is directly pasted skin by loam cake 1, loam cake 1 material adopts TPU injection molded, omitted the foam between contact-making surface and piezoelectric element or spring in the existing contact piezoelectric microphone, thus the vibrations of safer reception skin.The TPU material property is between material and rubber, the surface corrosion resistance is strong, little to skin irritation, hardness can be regulated, coefficient of friction is large, because it belongs to flexible material substantially, with piezoelectric ceramics sheet 2 can close contact, with loam cake 1 formed contact thickness and loam cake 1 surface diameter ratio greater than 0.2, more the loud noise decay intensity is larger for ratio, play simultaneously the low pass filter effect, and loam cake 1 formed contact thickness and loam cake 1 material hardness ratio is less than 1/40 o'clock, the sound wave that produces via loam cake 1 and skin contact through TPU reach piezoelectric ceramics sheet 2 be directly changed into signal through circuit board 4 amplify process after by shielding conductor 6 outputs, allow except user's sound, most background noise all is attenuated eliminating, reaches the purpose of removing noise.
The utility model is simple in structure, can effectively solve the problem that existing Electret Condencer Microphone is affected by noise easily, directly paste skin by loam cake, the foam between contact-making surface and piezoelectric element or spring in the existing contact piezoelectric microphone have been omitted, thereby receive more completely the vibration of skin, practical.
Description of drawings:
Fig. 1 is structural representation of the present utility model.
Embodiment:
Referring to Fig. 1, this embodiment is by the following technical solutions: it comprises loam cake 1, lower cover 5, in the accommodation space of loam cake 1 and lower cover 5 formation, be provided with substrate 3, be provided with circuit board 4 in the lower end of substrate 3, be provided with piezoelectric ceramics sheet 2 in the upper end of substrate 3, piezoelectric ceramics sheet 2 is connected connection by holding wire 7 with circuit board, be provided with shielding conductor 6 in the lower end of circuit board 4.
Described loam cake 1 adopts TPU injection molded.
This embodiment piezoelectric ceramics sheet 2 is directly pasted skin by loam cake 1, loam cake 1 material adopts TPU injection molded, omitted the foam between contact-making surface and piezoelectric element or spring in the existing contact piezoelectric microphone, thus the vibrations of safer reception skin.The TPU material property is between material and rubber, the surface corrosion resistance is strong, little to skin irritation, hardness can be regulated, coefficient of friction is large, because it belongs to flexible material substantially, with piezoelectric ceramics sheet 2 can close contact, with loam cake 1 formed contact thickness and loam cake 1 surface diameter ratio greater than 0.2, more the loud noise decay intensity is larger for ratio, play simultaneously the low pass filter effect, and loam cake 1 formed contact thickness and loam cake 1 material hardness ratio is less than 1/40 o'clock, the sound wave that produces via loam cake 1 and skin contact through TPU reach piezoelectric ceramics sheet 2 be directly changed into signal through circuit board 4 amplify process after by shielding conductor 6 outputs, allow except user's sound, most background noise all is attenuated eliminating, reaches the purpose of removing noise.
This embodiment is simple in structure, can effectively solve the problem that existing Electret Condencer Microphone is affected by noise easily, directly paste skin by loam cake, the foam between contact-making surface and piezoelectric element or spring in the existing contact piezoelectric microphone have been omitted, thereby receive more completely the vibration of skin, practical.
Claims (2)
1. novel skin contact piezoelectric mic, it comprises loam cake (1), lower cover (5), it is characterized in that in the accommodation space of loam cake (1) and lower cover (5) formation, being provided with substrate (3), be provided with circuit board (4) in the lower end of substrate (3), be provided with piezoelectric ceramics sheet (2) in the upper end of substrate (3), piezoelectric ceramics sheet (2) is connected 4 by holding wire (7) with circuit board) connect, be provided with shielding conductor (6) in the lower end of circuit board (4).
2. a kind of novel skin contact piezoelectric mic according to claim 1 is characterized in that described loam cake (1) adopts TPU injection molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220510908 CN202889618U (en) | 2012-09-29 | 2012-09-29 | Novel skin contact piezoelectric type microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220510908 CN202889618U (en) | 2012-09-29 | 2012-09-29 | Novel skin contact piezoelectric type microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202889618U true CN202889618U (en) | 2013-04-17 |
Family
ID=48081000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220510908 Expired - Fee Related CN202889618U (en) | 2012-09-29 | 2012-09-29 | Novel skin contact piezoelectric type microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202889618U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106851466A (en) * | 2017-04-17 | 2017-06-13 | 何政 | Portable earphone |
| CN110650392A (en) * | 2019-09-29 | 2020-01-03 | 上海幂方电子科技有限公司 | Sound receiving device |
-
2012
- 2012-09-29 CN CN 201220510908 patent/CN202889618U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106851466A (en) * | 2017-04-17 | 2017-06-13 | 何政 | Portable earphone |
| CN106851466B (en) * | 2017-04-17 | 2024-01-26 | 何政 | Portable earphone |
| CN110650392A (en) * | 2019-09-29 | 2020-01-03 | 上海幂方电子科技有限公司 | Sound receiving device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20150929 |
|
| EXPY | Termination of patent right or utility model |