CN204068888U - Piezoelectric vibrator - Google Patents
Piezoelectric vibrator Download PDFInfo
- Publication number
- CN204068888U CN204068888U CN201420395340.4U CN201420395340U CN204068888U CN 204068888 U CN204068888 U CN 204068888U CN 201420395340 U CN201420395340 U CN 201420395340U CN 204068888 U CN204068888 U CN 204068888U
- Authority
- CN
- China
- Prior art keywords
- metal substrate
- piezoelectric vibrator
- piezoceramics
- insulating barrier
- piexoelectric actuator
- 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
Links
- 239000002184 metal Substances 0.000 claims abstract description 31
- 239000000758 substrate Substances 0.000 claims abstract description 30
- 230000004888 barrier function Effects 0.000 claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001755 vocal effect Effects 0.000 description 1
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The utility model provides a kind of piezoelectric vibrator, it Piexoelectric actuator comprising metal substrate and drive the vibration of described metal substrate, described Piexoelectric actuator comprises some spaced piezoceramics layers and lays respectively at piezoceramics layer upper and lower surface and the electrode layer be electrically connected with piezoceramics layer, adjacent two piezoceramics layers share an electrode layer, and described piezoelectric actuator comprises an insulating barrier between metal substrate and Piexoelectric actuator further.Loud speaker of the present utility model can improve reliability and the fail safe of product.
Description
[technical field]
The utility model relates to a kind of piezoelectric vibrator, especially a kind of piezo-ceramic vibrators.
[background technology]
Piezoelectric vibrator is a kind of common vibrator, has a lot of application scenario, such as, may be used for piezo-electric motor, also can be applied in the vocal skill of the sounding such as drive electronics.Along with the development of mobile device, also more and more higher to the requirement of wherein used loud speaker.
As shown in Figure 1, for a kind of common piezoelectric vibrator, it has a metal substrate 1 ' and is sticked at the Piexoelectric actuator 2 ' on its surface, and described Piexoelectric actuator 2 ' comprises multilayer piezoelectric ceramic 21 ' and lays respectively at the electrode layer 22 ' on piezoelectric ceramic two surfaces upper and lower 21 '.The piezoelectric vibrator of this structure, when the work of energising, by with certain electromotive force on this metal substrate, this is for being disadvantageous in certain environments.Such as, when on the metal shell that this metal substrate is fixed on electronic equipment, Whole Equipment can be caused charged, and due to piezoelectric vibrator operating voltage very high, thus whole equipment can bring very high electromotive force, is disadvantageous for the use safety of user and the work of other parts.
Therefore, be necessary to provide a kind of novel piezoelectric vibrator, to solve above-mentioned deficiency in fact.
[utility model content]
The purpose of this utility model is to provide a kind of novel piezoelectric vibrator, improves reliability and the fail safe of product.
According to above-mentioned technical problem, devise a kind of piezoelectric vibrator, it Piexoelectric actuator comprising metal substrate and drive the vibration of described metal substrate, described Piexoelectric actuator comprises some piezoceramics layers and lays respectively at piezoceramics layer upper and lower surface and the electrode layer be electrically connected with piezoceramics layer, adjacent two piezoceramics layers share an electrode layer, and described piezoelectric actuator comprises an insulating barrier between metal substrate and Piexoelectric actuator further.
Preferably, the upper and lower surface of described metal substrate be provided with Piexoelectric actuator and insulating barrier.
Preferably, described piezoelectric vibrator is take metal substrate as the axially symmetric structure in axle center.
Preferably, described insulating barrier adopts glue to be bonded in the surface of described metal substrate.
Preferably, described insulating barrier is piezoelectric ceramic.
The beneficial effects of the utility model are: between metal substrate and Piexoelectric actuator, arrange insulating barrier, avoid metal substrate charged, improve reliability and the fail safe of product.
[accompanying drawing explanation]
Fig. 1 is the profile of existing piezoelectric vibrator;
Fig. 2 is the combination schematic diagram of the utility model piezoelectric vibrator;
Fig. 3 is the profile of the utility model piezoelectric vibrator.
[embodiment]
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figures 2 and 3, the utility model provides a kind of piezoelectric vibrator, it Piexoelectric actuator 2 comprising metal substrate 1 and drive described metal substrate to vibrate.
Described Piexoelectric actuator 2 comprises some spaced piezoceramics layers 21 and lays respectively at piezoceramics layer 21 upper and lower surface and the electrode layer 22 be electrically connected with piezoceramics layer.Wherein adjacent two piezoceramics layers share an electrode layer 22.When piezoelectric vibrator works, the electrode layer 22 of the upper and lower surface of same piezoceramics layer, respectively with different electromotive forces, is generally a positive potential and a secondary electromotive force.When piezoceramics layer 21 is multilayer, in its multiple electrode layer, the electrode layer 22 of one of being often separated by is electrically connected, with identical electromotive force, like this, just can make all there is electrical potential difference between every two electrode layers, because piezoceramics layer 21 is all electrically connected with it, like this, piezoceramics layer just can be made charged thus produce deformation vibration under the effect of piezoelectric effect.In the present embodiment, the quantity of described piezoceramics layer can be arbitrarily, considers thickness and the actuating force of product, usually adopts three to four layers.
Described metal substrate can for only upper surface or lower surface side are provided with Piexoelectric actuator, also Piexoelectric actuator can be provided with for upper and lower surface, preferably, for being equipped with Piexoelectric actuator up and down, and the structure of both sides is identical up and down, the piezoceramics layer had is identical with the electrode layer number of plies, is take metal substrate as the axially symmetric structure in axle center.Like this, stability and the reliability of piezoelectric vibrator can be ensured.
In the utility model, described piezoelectric vibrator comprises an insulating barrier 3 between metal substrate 1 and Piexoelectric actuator 2 further.Like this, 6 Piexoelectric actuators can be avoided directly to contact with metal substrate 21, and electrode layer 22 causes metal substrate 21 charged.Described insulating barrier 23 adopts glue to be bonded in the surface of described metal substrate 21.Described insulating barrier 23 can be any insulating material, in the present embodiment, preferably, described insulating barrier is piezoelectric ceramic, and Product processing can be made so more convenient, now described insulating barrier is consistent with the structure and material of the piezoceramics layer in described Piexoelectric actuator, its difference is only, described insulating barrier, due to the electrode layer not having upper and lower surface all to arrange electrical connection, does not have electrical potential difference, therefore there is not piezoelectric effect, only play insulation effect.
The utility model arranges insulating barrier between metal substrate and Piexoelectric actuator, avoids metal substrate charged, improves reliability and the fail safe of product.
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 amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (5)
1. a piezoelectric vibrator, it Piexoelectric actuator comprising metal substrate and drive the vibration of described metal substrate, it is characterized in that: described Piexoelectric actuator comprises some spaced piezoceramics layers and lays respectively at piezoceramics layer upper and lower surface and the electrode layer be electrically connected with piezoceramics layer, adjacent two piezoceramics layers share an electrode layer, and described piezoelectric actuator comprises an insulating barrier between metal substrate and Piexoelectric actuator further.
2. piezoelectric vibrator according to claim 1, is characterized in that: the upper and lower surface of described metal substrate is provided with Piexoelectric actuator and insulating barrier.
3. piezoelectric vibrator according to claim 2, is characterized in that: described piezoelectric vibrator is take metal substrate as the axially symmetric structure in axle center.
4. piezoelectric vibrator according to claim 1, is characterized in that: described insulating barrier adopts glue to be bonded in the surface of described metal substrate.
5. piezoelectric vibrator according to claim 1, is characterized in that: described insulating barrier is piezoelectric ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420395340.4U CN204068888U (en) | 2014-07-16 | 2014-07-16 | Piezoelectric vibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420395340.4U CN204068888U (en) | 2014-07-16 | 2014-07-16 | Piezoelectric vibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204068888U true CN204068888U (en) | 2014-12-31 |
Family
ID=52210328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420395340.4U Expired - Fee Related CN204068888U (en) | 2014-07-16 | 2014-07-16 | Piezoelectric vibrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204068888U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI585652B (en) * | 2016-07-21 | 2017-06-01 | 和碩聯合科技股份有限公司 | Touch input device, electronic device and touch input method |
-
2014
- 2014-07-16 CN CN201420395340.4U patent/CN204068888U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI585652B (en) * | 2016-07-21 | 2017-06-01 | 和碩聯合科技股份有限公司 | Touch input device, electronic device and touch input method |
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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: 20180930 Address after: No. 8, 2 floor, 85 Cavendish Science Park Avenue, Singapore Patentee after: AAC TECHNOLOGIES Pte. Ltd. Address before: 213167 Changzhou, Jiangsu City, Wujin province summer town villa Patentee before: AAC MICROTECH (CHANGZHOU) Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |