CN204377110U - A kind of earphone piezoelectric speaker - Google Patents
A kind of earphone piezoelectric speaker Download PDFInfo
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- CN204377110U CN204377110U CN201520108114.8U CN201520108114U CN204377110U CN 204377110 U CN204377110 U CN 204377110U CN 201520108114 U CN201520108114 U CN 201520108114U CN 204377110 U CN204377110 U CN 204377110U
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- earphone
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- piezoelectric ceramic
- speaker
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Abstract
The utility model provides a kind of earphone piezoelectric speaker, the one side being adhered to metal vibration plate by multilayer piezoelectric ceramic sheet forms loud speaker pronunciation vibrational structure, the every layer thickness of piezoelectric ceramic piece is less than 50 microns, interior electrode adopts Ag/Pd electrode material, external electrode adopts Ag or Ag/Pd print material to make and external electrode designs in one plane, takes insulation structure between electrode.The utility model, by improving the motive force of piezoelectric element, carries out high frequency compensation, realizes the feature of high-fidelity headphone in earphone.
Description
Technical field
The utility model relates to the piezoelectric speaker of the Mini-type audio equipment equipment such as earphone.
Background technology
Piezoelectric speaker a kind ofly realizes by inverse piezoelectric effect the electro-acoustic element that electric energy and mechanical energy changes, and the sound equipment being widely used in mini-plant exports.General piezoelectric speaker adopts metal vibration plate to attach piezoelectric element structure, forms flexural vibrations, thus realize the output of sound under audio-frequency electric field excitation.
Here, the flexural vibrations of piezoelectric speaker are out of shape by the excitation of piezoelectric element to promote, and the stiffness effect due to metal vibration diaphragm causes piezoelectric speaker frequency response to improve, and high frequency volume is better.Therefore, piezoelectric speaker can be used as high pitch and compensates application.
Summary of the invention
The purpose of this utility model is to provide a kind of earphone piezoelectric speaker, by improving the motive force of piezoelectric element, carrying out high frequency compensation, realize the feature of high-fidelity headphone in earphone.
For achieving the above object, the technical solution of the utility model is: a kind of earphone piezoelectric speaker, it is characterized in that the one side being adhered to metal vibration plate by multilayer piezoelectric ceramic sheet forms loud speaker pronunciation vibrational structure, the every layer thickness of piezoelectric ceramic piece is less than 50 microns, interior electrode adopts Ag/Pd electrode material, external electrode adopts Ag or Ag/Pd print material to make and external electrode designs in one plane, and take insulation structure between electrode, engraved structure taked by metal vibration plate.
Wherein multilayer piezoelectric ceramic plate shape is circular or square.
Wherein metal vibration plate shape is square or circular.
The utility model has following characteristics:
1, adopt multi-layer ceramics burning technology altogether, realize the parallel connection of multilayer piezoelectric speaker in electricity, and the series connection on mechanics, improve the motive force of piezoelectric element.
2, adopt advanced ceramics manufacturing technology, improve the piezoelectric constant of piezoceramic material, planar mechanical coupling coefficient, reduce piezoelectric element impedance etc., improve the motive force of piezoelectric element.
3, metal vibration diaphragm adopts engraved structure design, is conducive to improving loudspeaker vibration mechanical resistance, improves acoustic pressure and exports, improve loudspeaker frequency characteristic, improve the flatness of sound.
4, adopt multilayer piezoelectric ceramic sheet and metal vibration diaphragm compound sticking technology, realize the output of good high-frequency sound.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2-1 and Fig. 2-2 is outline drawings of multilayer piezoelectric ceramic sheet.
Fig. 3-1, Fig. 3-2, Fig. 3-3, Fig. 3-4, Fig. 4-1, Fig. 4-2, Fig. 4-3 and Fig. 4-4 is outline drawings of metal vibration plate.
Fig. 5-1, Fig. 5-2, Fig. 5-3, Fig. 5-4, Fig. 6-1, Fig. 6-2, Fig. 6-3, Fig. 6-4 are appearance schematic diagram of the present utility model.
Embodiment
As shown in Figure 1, the utility model forms loud speaker pronunciation vibrational structure by the multilayer piezoelectric ceramic one side that altogether piezoelectric patches made of burning technology and multilayer piezoelectric ceramic sheet 1 are adhered to metal vibration plate 2.
Engraved structure taked by above-mentioned metal vibration plate 2, to improve frequency characteristic and the sound flatness of loud speaker.
The every layer thickness of multilayer piezoelectric ceramic sheet 1 is less than 50 microns, and interior electrode adopts Ag/Pd electrode material, and external electrode adopts Ag or Ag/Pd print material to make and external electrode designs in one plane, takes insulation structure between electrode.
Wherein multilayer piezoelectric ceramic sheet 1 shape is circular or square, as shown in Fig. 2-1, Fig. 2-2.
Wherein metal vibration plate 2 shape can be square or circular, as shown in Fig. 3-1, Fig. 3-2, Fig. 3-3, Fig. 3-4, Fig. 4-1, Fig. 4-2, Fig. 4-3, Fig. 4-4.
Just a lot of form can be combined into, as shown in Fig. 5-1, Fig. 5-2, Fig. 5-3, Fig. 5-4, Fig. 6-1, Fig. 6-2, Fig. 6-3, Fig. 6-4 like this by the loud speaker of multilayer piezoelectric ceramic sheet 1 and metal vibration plate 2 compound.
For metal vibration film square hole in conjunction with the design of circular hole hollow out, object is to effectively suppress the diaphagras of oscillating plate and avoiding causing larger distortion, is secondly to make more effective insulation between potsherd external electrode and oscillating plate.
For the utility model patent, made piezoelectric vibrator is actual test result after loading earphone, compare conventional earphone, widen frequency range scope, improve LF-response, and effectively play the response of piezoelectric vibrator at high frequency, particularly after 20K, conventional loudspeakers is difficult to the high frequency showed, hyperfrequency, and piezoelectric vibrator all reaches designing requirement for the Frequency point reduction that 20K is later.
Claims (3)
1. an earphone piezoelectric speaker, it is characterized in that the one side being adhered to metal vibration plate (2) by multilayer piezoelectric ceramic sheet (1) forms loud speaker pronunciation vibrational structure, wherein the every layer thickness of multilayer piezoelectric ceramic sheet (1) is less than 50 microns, interior electrode adopts Ag/Pd electrode material, external electrode adopts Ag or Ag/Pd print material to make and external electrode designs in one plane, take insulation structure between electrode, engraved structure taked by metal vibration plate (2).
2. earphone piezoelectric speaker as claimed in claim 1, is characterized in that multilayer piezoelectric ceramic sheet (1) shape is circular or square.
3. earphone piezoelectric speaker as claimed in claim 1, is characterized in that metal vibration plate (2) shape is circular or square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520108114.8U CN204377110U (en) | 2015-02-13 | 2015-02-13 | A kind of earphone piezoelectric speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520108114.8U CN204377110U (en) | 2015-02-13 | 2015-02-13 | A kind of earphone piezoelectric speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204377110U true CN204377110U (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520108114.8U Active CN204377110U (en) | 2015-02-13 | 2015-02-13 | A kind of earphone piezoelectric speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204377110U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107710781A (en) * | 2015-06-17 | 2018-02-16 | 第精工株式会社 | Earphone |
| CN112138972A (en) * | 2020-09-28 | 2020-12-29 | 京东方科技集团股份有限公司 | Sound wave transduction unit, preparation method thereof and sound wave transducer |
-
2015
- 2015-02-13 CN CN201520108114.8U patent/CN204377110U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107710781A (en) * | 2015-06-17 | 2018-02-16 | 第精工株式会社 | Earphone |
| CN107710781B (en) * | 2015-06-17 | 2020-05-12 | 第一精工株式会社 | Earphone set |
| CN112138972A (en) * | 2020-09-28 | 2020-12-29 | 京东方科技集团股份有限公司 | Sound wave transduction unit, preparation method thereof and sound wave transducer |
| US11813641B2 (en) | 2020-09-28 | 2023-11-14 | Boe Technology Group Co., Ltd. | Acoustic transduction unit, manufacturing method thereof and acoustic transducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181207 Address after: 518000 No. 1 Workshop, Yongxin Industrial Plant, 89 Hengping Road, Yuanshan Street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Kanghong Environmental Protection Technology Co., Ltd. Address before: 710075 Kanghong Industrial Park, No. 40 High-tech Sixth Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: Xi'an Kanghong New Material Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 No. 1 Workshop, Yongxin Industrial Plant, 89 Hengping Road, Yuanshan Street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Kanghong Intelligent Health Technology Co.,Ltd. Address before: 518000 No. 1 Workshop, Yongxin Industrial Plant, 89 Hengping Road, Yuanshan Street, Longgang District, Shenzhen City, Guangdong Province Patentee before: HEALTHLEAD Corp.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |