CN203279168U - Piezoelectric loudspeaker - Google Patents
Piezoelectric loudspeaker Download PDFInfo
- Publication number
- CN203279168U CN203279168U CN 201320237128 CN201320237128U CN203279168U CN 203279168 U CN203279168 U CN 203279168U CN 201320237128 CN201320237128 CN 201320237128 CN 201320237128 U CN201320237128 U CN 201320237128U CN 203279168 U CN203279168 U CN 203279168U
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- piezoelectric
- vibrating diaphragm
- underframe
- piezoelectric speaker
- frame
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Abstract
The utility model provides a piezoelectric loudspeaker which comprises an annular lower framework, a diaphragm fixed on the lower framework and a piezoelectric patch applied onto the diaphragm. The lower framework comprises a frame and a hollow portion enclosed by the frame; the diaphragm is lapped on the frame; a sink groove protruding to the hollow portion is arranged in the diaphragm; and the piezoelectric patch is accommodated and fixed in the sink groove. The piezoelectric loudspeaker of the utility model enables the piezoelectric patch to have a larger vibration space, ensures product performance, and is helpful for thinning the product.
Description
Technical field
The utility model relates to a kind of loud speaker, relates in particular to a kind of piezoelectric speaker.
Background technology
Piezoelectric patches has inverse piezoelectric effect, namely under the effect of extra electric field, mechanical deformation occurs.Utilize this characteristic, can be used for making piezoelectric transducer, as piezo-electric loudspeaker, piezoelectric vibrator etc.Piezoelectric speaker with its high sensitivity, without magnetic field disseminate excessive, cost is low, and the little advantage of volume be widely used, be well suited for ultrasonic wave and infrasonic emission and acceptance.Be equally applicable on most of electronic products such as mobile phone, multimedia player, notebook computer etc.
Piezoelectric speaker generally includes the wiring board that is provided with splicing ear, gummed and fixing in the circuit board vibrating diaphragm and the piezoelectric patches on vibrating diaphragm of being sticked.The vibrating diaphragm of the piezoelectric speaker of prior art is generally a plane, and piezoelectric patches is attached at the central part of vibrating diaphragm.Yet the piezoelectric speaker of this structure piezoelectric patches when vibration easily exceeds the upper surface of product design, and the performance that has affected piezoelectric speaker has limited the slimming development of piezoelectric speaker simultaneously.
Therefore, being necessary to study a kind of new technical scheme improves or addresses the above problem.
The utility model content
For above problem, the utility model provides a kind of piezoelectric speaker of slim and stable performance.
Piezoelectric speaker, the underframe that comprises ring-type, be fixed in the vibrating diaphragm and the piezoelectric patches that is sticked on vibrating diaphragm of underframe, described underframe comprises frame and the hollow bulb that is surrounded by frame, described vibrating diaphragm is overlapped on described frame, which is provided with to the outstanding deep gouge of hollow bulb, described piezoelectric patches is accommodated and is fixed in described deep gouge.
Preferably, described vibrating diaphragm is organic film, and described deep gouge is that hot pressing forms.
Preferably, described underframe is pcb board, which is provided with the conductive part of metal structure.
Preferably, described piezoelectric speaker also is provided with an end and is electrically connected to described piezoelectric patches, and the conducting terminal of described underframe conductive part is fixed and be electrically connected to an end.
Preferably, described conducting terminal is FPC.
Preferably, this piezoelectric speaker further comprises upper frame, and described underframe and upper frame coordinate the described vibrating diaphragm of clamping.
Preferably, described upper frame comprises two parallel long limits and the minor face that is connected two long limits, is provided with a breach relative with described minor face between two long limits, and described breach is accommodated conducting terminal.
Preferably, described upper frame and described vibrating diaphragm gummed.
Preferably, described piezoelectric patches is the piezoelectric ceramics sheet.
Preferably, described vibrating diaphragm is polyimide film.
Piezoelectric speaker of the present utility model, its vibrating diaphragm are provided with to the outstanding deep gouge of the hollow bulb of underframe, and piezoelectric patches is arranged in deep gouge, makes piezoelectric patches have larger oscillation space, has guaranteed the performance of product, is conducive to the Realization of Product slimming.
Description of drawings
Fig. 1 is the three-dimensional exploded view of the utility model piezoelectric speaker;
Fig. 2 is the combination schematic diagram of the utility model piezoelectric speaker;
Fig. 3 is that the utility model piezoelectric speaker is along the cutaway view of X-X line;
Fig. 4 is the enlarged drawing of A part shown in Figure 3.
Embodiment
Below in conjunction with accompanying drawing, piezoelectric speaker structure of the present utility model is described.
As shown in Figure 1, be the three-dimensional exploded view of the utility model piezoelectric speaker, described piezoelectric speaker 100 comprises underframe 1 that pcb board makes, is fixed on the vibrating diaphragm 2 on underframe 1 and is attached at the piezoelectric patches 3 of vibrating diaphragm 2.
To shown in Figure 4, underframe 1 is rectangular closed formula circulus, is made by pcb board, which is provided with the conductive part 11 of metal structure as Fig. 1, plays the effect that connects piezoelectric patches and external power source.Concrete, this underframe 1 comprises frame 12 and the hollow bulb 13 that is surrounded by frame 12.Described conducting position is on described frame 12.Certainly, underframe is not one to be decided to be rectangle, can be other shapes yet.In addition, this frame also can be a slab construction, so long as the effect that has support and conduct electricity namely can be implemented.
In the present embodiment, described piezoelectric speaker also has the upper frame 4 of U-shaped structure, it comprises two parallel long limits 41 and the minor face 42 that is connected two long limits, that is to say, described upper frame 10 comprises a breach (not label), described breach is grown between limits 41 two, and relative with described minor face 42.Described underframe 1 and upper frame 4 cooperations grip described vibrating diaphragm 3.In the present embodiment, described upper frame and underframe are also fixing with the vibrating diaphragm gummed respectively.Certainly, this is one of embodiment, in selectable other embodiment, can there is no upper frame yet, perhaps upper frame and underframe are structure as a whole, as long as have the vibrating diaphragm of the piezoelectric patches that is sticked and be used for supporting the fixedly underframe of vibrating diaphragm, namely can implement.In addition, the fixed form of vibrating diaphragm and upper frame and underframe also is not limited to gummed, also can otherwise fix.
Piezoelectric speaker also is provided with the conducting terminal 5 with two contact jaws, and this conducting terminal 5 is FPC, and the one end is electrically connected on the metallic conduction sheet 31 of piezoelectric patches 3, and the other end is electrically connected on the conductive part 11 of underframe.Thereby piezoelectric patches 3 is electrically connected to underframe 1.Conducting terminal 5 is arranged in the formed breach of upper frame 4.
Vibrating diaphragm 2 is organic film, and is concrete in the present embodiment, is PI film (Polyimide Film, polyimide film).The overlapping edges of vibrating diaphragm 2 is gummed on the frame 12 of underframe 1 and with it, and the central part of vibrating diaphragm 2 has by hot pressing and forms, the deep gouge 21 of giving prominence to hollow bulb 13 directions.Piezoelectric patches 3 is accommodated and is fixed in deep gouge 21.Like this, when working, piezoelectric patches can have larger oscillation space, can not exceed the upper surface of product, makes properties of product more stable at piezoelectric speaker, also can make the thinner of product processing.
Piezoelectric speaker of the present utility model, its vibrating diaphragm are provided with to the outstanding deep gouge of the hollow bulb of underframe, and piezoelectric patches is arranged in deep gouge, makes piezoelectric patches have larger oscillation space, has guaranteed the performance of product, is conducive to the Realization of Product slimming.
These are only preferred case study on implementation of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. piezoelectric speaker, the underframe that comprises ring-type, be fixed in the vibrating diaphragm and the piezoelectric patches that is sticked on described vibrating diaphragm of underframe, it is characterized in that: described underframe comprises frame and the hollow bulb that is surrounded by frame, described vibrating diaphragm is overlapped on described frame, which is provided with to the outstanding deep gouge of hollow bulb, described piezoelectric patches is accommodated and is fixed in described deep gouge.
2. piezoelectric speaker according to claim 1, it is characterized in that: described vibrating diaphragm is organic film, described deep gouge is that hot pressing forms.
3. piezoelectric speaker according to claim 2, it is characterized in that: described underframe is pcb board, which is provided with the conductive part of metal structure.
4. piezoelectric speaker according to claim 3 is characterized in that: described piezoelectric speaker also is provided with an end and is electrically connected to described piezoelectric patches, and the conducting terminal of described underframe conductive part is fixed and be electrically connected to the other end.
5. piezoelectric speaker according to claim 4, it is characterized in that: described conducting terminal is FPC.
6. piezoelectric speaker according to claim 4, it is characterized in that: this piezoelectric speaker further comprises upper frame, described underframe and upper frame coordinate the described vibrating diaphragm of clamping.
7. piezoelectric speaker according to claim 6 is characterized in that: described upper frame comprises two parallel long limits and is connected the minor face on two long limits, and be provided with a breach relative with described minor face between two long limits, described breach is accommodated described conducting terminal.
8. according to claim 6 or 7 described piezoelectric speakers, is characterized in that: described upper frame and described vibrating diaphragm gummed.
9. according to claim 1 to the 7 described piezoelectric speakers of any one, it is characterized in that: described piezoelectric patches is the piezoelectric ceramics sheet.
10. according to claim 1 to the 7 described piezoelectric speakers of any one, it is characterized in that: described vibrating diaphragm is polyimide film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320237128 CN203279168U (en) | 2013-05-03 | 2013-05-03 | Piezoelectric loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320237128 CN203279168U (en) | 2013-05-03 | 2013-05-03 | Piezoelectric loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203279168U true CN203279168U (en) | 2013-11-06 |
Family
ID=49509484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320237128 Expired - Fee Related CN203279168U (en) | 2013-05-03 | 2013-05-03 | Piezoelectric loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203279168U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016165320A1 (en) * | 2015-04-16 | 2016-10-20 | 歌尔声学股份有限公司 | Piezoelectric speaker |
| CN108476362A (en) * | 2015-12-24 | 2018-08-31 | 摩达伊诺琴股份有限公司 | Set composite and electronic device comprising the set composite |
-
2013
- 2013-05-03 CN CN 201320237128 patent/CN203279168U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016165320A1 (en) * | 2015-04-16 | 2016-10-20 | 歌尔声学股份有限公司 | Piezoelectric speaker |
| CN108476362A (en) * | 2015-12-24 | 2018-08-31 | 摩达伊诺琴股份有限公司 | Set composite and electronic device comprising the set composite |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20210503 |