CN207304921U - A kind of ultra-thin piezoelectric buzzer - Google Patents
A kind of ultra-thin piezoelectric buzzer Download PDFInfo
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- CN207304921U CN207304921U CN201721119676.8U CN201721119676U CN207304921U CN 207304921 U CN207304921 U CN 207304921U CN 201721119676 U CN201721119676 U CN 201721119676U CN 207304921 U CN207304921 U CN 207304921U
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- metal substrate
- ceramic piece
- piezoelectric ceramic
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- auxiliary electrode
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Abstract
It the utility model is related to a kind of ultra-thin piezoelectric buzzer,Including circular metal substrate,Gluing is fixed on circular piezoelectric ceramic piece and the FPCB wiring board on metal substrate,The upper surface of piezoelectric ceramic piece is equipped with main electrode and auxiliary electrode,Main electrode is divided into bonding pad and insulation layer,The upper surface of insulation layer is covered with insulating layer,Auxiliary electrode is connected with metal substrate,Aeolotropic conductive layer is equipped between piezoelectric ceramic piece and FPCB wiring boards,FPCB wiring boards are equipped with positive wire,Negative wire and ground lead,Positive wire is connected by the bonding pad of aeolotropic conductive layer and main electrode,Negative wire is connected by aeolotropic conductive layer with auxiliary electrode,The thickness of metal substrate is less than or equal to 0.15mm,The thickness of piezoelectric ceramic piece is less than or equal to 0.1mm,The utility model is simple and reasonable,Production difficulty is small,It is reliable and stable,Thickness is small,It is easily achieved industrial production automation.
Description
Technical field
A kind of buzzer is the utility model is related to, particularly a kind of ultra-thin piezoelectric buzzer.
Background technology
Piezoelectric buzzer is a kind of sounding body using piezoelectric ceramics as electroacoustic transducer, and piezoelectric buzzer is made an uproar without radio frequency
The high and low power consumption of sound, long lifespan, reliability, the features such as being easily installed make its attention, and development is very fast, and piezoelectric patches is with drawing
Line is generally using the connection mode of welding, situations such as easily off-line, potsherd scorch in welding process, the electrode of existing lead
Lead-out mode is inconvenient, and efficiency is low, of high cost, it is difficult to controls solder joint, and has pollution, be unfavorable for environmental protection, reliability is not high, limit
The application range of product is made.
The content of the invention
The purpose of this utility model be to provide it is a kind of it is reliable and stable, need not weld, not produce small ultra-thin of pollution, thickness
Piezoelectric buzzer.
Realize that the technical solution of the utility model aim is as follows：
A kind of ultra-thin piezoelectric buzzer, including circular metal substrate, the glued circular pressure being fixed on metal substrate
Electroceramics piece and FPCB wiring boards, the upper surface of the piezoelectric ceramic piece are equipped with main electrode and auxiliary electrode, the main electrode point
For bonding pad and insulation layer, covered with insulating layer, the auxiliary electrode is connected with metal substrate, described for the upper surface of the insulation layer
Be equipped with aeolotropic conductive layer between piezoelectric ceramic piece and FPCB wiring boards, the FPCB wiring boards be equipped with positive wire,
Negative wire and ground lead, the positive wire are connected by the bonding pad of aeolotropic conductive layer and main electrode, institute
State negative wire to be connected with auxiliary electrode by aeolotropic conductive layer, the thickness of the metal substrate is less than or equal to
0.15mm, the thickness of the piezoelectric ceramic piece are less than or equal to 0.1mm.
With the above structure, vibration source is fixedly connected to form using metal substrate and piezoelectric ceramic piece, passes through Metal Substrate
Piece can substantially reduce the thickness of product with this structure of piezoelectric ceramic piece, improve the service life of piezoelectric ceramic piece, Metal Substrate
Piece is fixedly connected with piezoelectric ceramic piece gluing, and FPCB wiring boards are fixed by aeolotropic conductive layer and piezoelectric ceramic piece hot pressing
Connection, the problems such as avoiding the next damage of welded bands, pollute, the utility model is simple and reasonable, and production difficulty is small, and stabilization can
Lean on, thickness is small, it is easy to accomplish industrial production automation.
Preferably, in order to optimize the thickness of product, the thickness of the metal substrate is 0.1mm, the thickness of piezoelectric ceramic piece
For 0.08-0.1mm.
Preferably, in order to facilitate the connection of auxiliary electrode and metal substrate, conductive silver glue-line, institute are coated with the auxiliary electrode
Auxiliary electrode is stated to be connected with metal substrate by conductive silver glue-line.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the exploded perspective view of the utility model.
Fig. 3 is the piezoelectric ceramic piece of the utility model and the attachment structure schematic diagram of metal substrate.
In figure：1 is metal substrate, and 2 be piezoelectric ceramic piece, and 3 be FPCB wiring boards, and 4 be main electrode, and 5 be auxiliary electrode, and 6 are
Bonding pad, 7 be insulation layer, and 8 be insulating layer, and 9 be conductive silver glue-line, and 10 be aeolotropic conductive layer, and 11 be positive wire, 12
It is ground lead for negative wire, 13.
Embodiment
It is solid to understand that a kind of ultra-thin piezoelectric buzzer of the utility model includes circular metal substrate 1, gluing by Fig. 1 to Fig. 3
The circular piezoelectric ceramic piece 2 and FPCB wiring boards 3 being scheduled on metal substrate, the upper surface of the piezoelectric ceramic piece are equipped with master
Electrode 4 and auxiliary electrode 5, the main electrode are divided into bonding pad 6 and insulation layer 7, and the upper surface of the insulation layer 7 is covered with insulating layer
8, conductive silver glue-line 9 is coated with the auxiliary electrode, and the auxiliary electrode is connected by conductive silver glue-line with metal substrate, the pressure
Aeolotropic conductive layer 10 is equipped between electroceramics piece and FPCB wiring boards, the FPCB wiring boards are equipped with positive wire
11st, negative wire 12 and ground lead 13, the positive wire pass through aeolotropic conductive layer and the bonding pad of main electrode
Connection, the negative wire are connected by aeolotropic conductive layer with auxiliary electrode, and the thickness of the metal substrate is 0.1mm,
The thickness of piezoelectric ceramic piece is 0.08-0.1mm.
With the above structure, vibration source is fixedly connected to form using metal substrate and piezoelectric ceramic piece, passes through Metal Substrate
Piece can substantially reduce the thickness of product with this structure of piezoelectric ceramic piece, improve the service life of piezoelectric ceramic piece, Metal Substrate
Piece is fixedly connected with piezoelectric ceramic piece gluing, and FPCB wiring boards are fixed by aeolotropic conductive layer and piezoelectric ceramic piece hot pressing
Connection, the problems such as avoiding the next damage of welded bands, pollute, the utility model is simple and reasonable, and production difficulty is small, and stabilization can
Lean on, thickness is small, it is easy to accomplish industrial production automation.
The above is only the preferred embodiment of the present invention, and it does not limit the scope of the patent of the present invention,
Every equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is directly or indirectly transported
Used in other related technical areas, it is equally included in the patent within the scope of the utility model.
Claims (3)
- A kind of 1. ultra-thin piezoelectric buzzer, it is characterised in that：It is fixed on including circular metal substrate, gluing on metal substrate Circular piezoelectric ceramic piece and FPCB wiring board, the upper surface of the piezoelectric ceramic piece is equipped with main electrode and auxiliary electrode, described Main electrode is divided into bonding pad and insulation layer, and the upper surface of the insulation layer is covered with insulating layer, the auxiliary electrode and metal substrate Connect, be equipped with aeolotropic conductive layer between piezoelectric ceramic piece and the FPCB wiring board, the FPCB wiring boards are equipped with Positive wire, negative wire and ground lead, the connection that the positive wire passes through aeolotropic conductive layer and main electrode Area connects, and the negative wire is connected by aeolotropic conductive layer with auxiliary electrode, the thickness of the metal substrate be less than or Equal to 0.15mm, the thickness of the piezoelectric ceramic piece is less than or equal to 0.1mm.
- A kind of 2. ultra-thin piezoelectric buzzer according to claim 1, it is characterised in that：The thickness of the metal substrate is 0.1mm, the thickness of piezoelectric ceramic piece is 0.08-0.1mm.
- A kind of 3. ultra-thin piezoelectric buzzer according to claim 1, it is characterised in that：Coated with conduction on the auxiliary electrode Elargol layer, the auxiliary electrode are connected by conductive silver glue-line with metal substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721119676.8U CN207304921U (en) | 2017-09-01 | 2017-09-01 | A kind of ultra-thin piezoelectric buzzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721119676.8U CN207304921U (en) | 2017-09-01 | 2017-09-01 | A kind of ultra-thin piezoelectric buzzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207304921U true CN207304921U (en) | 2018-05-01 |
Family
ID=62445556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721119676.8U Active CN207304921U (en) | 2017-09-01 | 2017-09-01 | A kind of ultra-thin piezoelectric buzzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207304921U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451958A (en) * | 2019-07-24 | 2019-11-15 | 嘉兴清锋新材料有限公司 | A kind of potassium niobate sodium-based leadless piezoelectric ceramic and its manufacture craft and application |
| CN112867281A (en) * | 2021-01-04 | 2021-05-28 | 深圳市景旺电子股份有限公司 | Flexible circuit board and manufacturing method thereof |
-
2017
- 2017-09-01 CN CN201721119676.8U patent/CN207304921U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451958A (en) * | 2019-07-24 | 2019-11-15 | 嘉兴清锋新材料有限公司 | A kind of potassium niobate sodium-based leadless piezoelectric ceramic and its manufacture craft and application |
| CN112867281A (en) * | 2021-01-04 | 2021-05-28 | 深圳市景旺电子股份有限公司 | Flexible circuit board and manufacturing method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213000 room 706, No. 178, ERON South Road, Changzhou, Jiangsu Patentee after: Jiangsu wave speed sensor Co., Ltd Address before: 213000 room 706, No. 178, ERON South Road, Changzhou, Jiangsu Patentee before: BESTAR SENSORTECH Co.,Ltd. |