CN209249067U - Piezoelectricity singing piece and alarm - Google Patents
Piezoelectricity singing piece and alarm Download PDFInfo
- Publication number
- CN209249067U CN209249067U CN201821764117.7U CN201821764117U CN209249067U CN 209249067 U CN209249067 U CN 209249067U CN 201821764117 U CN201821764117 U CN 201821764117U CN 209249067 U CN209249067 U CN 209249067U
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- metal gasket
- piece
- piezoelectric ceramic
- metal
- piezoelectricity singing
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Abstract
The utility model discloses a kind of piezoelectricity singing piece and alarms, it is related to electrical and electronic component, aiming at the problem that piezoelectric ceramic piece solder joint easily vibrates desoldering, provide following technical scheme, including metal vibration film and piezoelectric ceramic piece, piezoelectric ceramics on piece is bonded with metal gasket, and metal gasket and conducting wire weld, metal gasket with a thickness of 0.05 ~ 0.10mm.Conducting wire is welded on metal gasket, compared to piezoelectric ceramic piece is directly welded at, is easier to weld, and the active force after welding has biggish contact surface between metal gasket, metal gasket and piezoelectric ceramic piece, thus whole more firm.
Description
Technical field
The utility model relates to a kind of electric equipment products, more specifically, it relates to a kind of piezoelectricity singing piece and alarm
Device.
Background technique
Alarm is a kind of energy transducer that electric signal is changed into acoustical signal, piezo-electric loudspeaker using piezoelectric material by
To the electric field action big principle that deformation occurs, electric element will be pressed to be placed in the electric field of tone currents signal formation, brought it about
Displacement finally drives vibrating diaphragm sounding to generate back voltage effect, realizes sounding alarm.
Currently, the power of existing alarm is generally large to meet biggish sounding needs, vibration frequency is high, can not
Preferable low frequency sounding is obtained, and plain conductor is welded on above the silver electrode of piezoelectric ceramic piece, is passing through the high electricity of high voltage
When flowing high-frequency vibration, tin point is easy to loosen and separate with the conjugant that silver electrode is formed, and will cause that piezo is noiseless, and there are products
Hidden danger.To reduce such hidden danger, a part of piezoelectricity singing piece sounding size is often sacrificed, the size Control of piezoelectricity singing piece is existed
35mm hereinafter, but also fail to thoroughly solve, still have improved space.
Utility model content
In view of the deficienciess of the prior art, the first of the utility model is designed to provide a kind of piezoelectricity singing piece, tool
There is the solder joint of piezoelectric ceramic piece to be not easy the advantages of loosening or separating.
To achieve the above object, the utility model provides following technical solution:
A kind of piezoelectricity singing piece, including metal vibration film and piezoelectric ceramic piece, the piezoelectric ceramics on piece are bonded with gold
Belong to gasket, the metal gasket and conducting wire weld, the metal gasket with a thickness of 0.05 ~ 0.10mm.
By adopting the above technical scheme, conducting wire is welded on metal gasket, compared to piezoelectric ceramic piece is directly welded at, is easier to
Welding, the active force after welding has biggish contact surface between metal gasket, metal gasket and piezoelectric ceramic piece, thus whole
Body is more firm.
Preferably, the area of the piezoelectric ceramic piece is 28% to the 40% of metal vibration membrane area.
By adopting the above technical scheme, when piezoelectric ceramic piece is too small, vibration frequency is too small, cannot get preferable height and takes place frequently
Sound, when piezoelectric ceramic piece is smaller, vibration frequency is higher, cannot get preferable low frequency sounding, therefore in 28% to 40% ratio
When, preferable sounding effect can be obtained.
Preferably, the metal vibration film is stainless steel substrates, and size diameter is 40 ~ 65mm, with a thickness of 0.2 ~ 0.3mm.
By adopting the above technical scheme, it selects stainless steel as vibrating diaphragm, cooperates certain size and thickness, it is available preferable
Low-frequency effect, and still maintain biggish product size and sound size.
Preferably, the size diameter of the piezoelectric ceramic piece is 25 ~ 35mm, with a thickness of 0.2 ~ 0.3mm.
By adopting the above technical scheme, under this size and thickness, cooperate above-mentioned vibrating diaphragm size and thickness, piezoelectricity singing piece
Acoustic pressure is than preferable.
Preferably, the area of the metal gasket is the 10% ~ 25% of piezoelectric ceramic piece area.
By adopting the above technical scheme, if metal gasket is excessive, the vibration frequency of piezoelectricity singing piece is influenced, is led if too small
Line is pasted not secured enough, it is therefore desirable to specific scale, and in this ratio, the impedance that piezoelectricity singing piece is integrally presented
It is minimum, phonation efficiency highest.
Preferably, protective glue is also coated with outside the pad of the metal gasket and conducting wire.
By adopting the above technical scheme, protective glue is coated outside solder joint, is unlikely to prolonged high-frequency vibration solder joint
It falls off, good product quality.
In view of the deficienciess of the prior art, the second of the utility model is designed to provide a kind of alarm, there is pressure
The solder joint of electroceramics piece is not easy the advantages of loosening or separating.
To achieve the above object, the utility model provides following technical solution:
A kind of alarm, including piezoelectricity singing piece as described above.
By adopting the above technical scheme, solder joint is not easily to fall off, and product quality is high, and sounding effect is good, low in energy consumption.
In conclusion the utility model has the following beneficial effects:
1. conducting wire is welded on the surface of metal gasket, the active force after welding is on metal gasket, metal gasket and pottery
Bigger contact surface is formed between porcelain, is avoided under the situation of not metal gasket, and the solder joint of bonding wire acts directly on piezoelectricity
On tile surface, when influence and power of the temperature of welding to ceramic glue-line increase big, individual solder joint connection can separate or pine
De-, the solder joint being welded on copper sheet adds protective glue reinforcing after welding, is attained by solder joint under high-frequency vibration and does not fall off
Product quality；
2. product has good low frequency and high frequency, sounding effect is good；
3. product is low in energy consumption, and supports the product diameter of larger size, so as to reach biggish sounding size.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of piezoelectricity singing piece.
In figure: 1, metal vibration film；2, piezoelectric ceramic piece；3, metal gasket；4, solder joint；5, conducting wire.
Specific embodiment
With reference to the accompanying drawings and embodiments, the utility model is described in detail.
A kind of alarm, including piezoelectricity singing piece, referring to Fig.1, piezoelectricity singing piece include metal vibration film 1, piezoelectric ceramics
Piece 2 and metal gasket 3.
Wherein, metal vibration film 1 is stainless steel substrates, and size diameter is 40 ~ 65mm, with a thickness of 0.2 ~ 0.3mm, in other realities
It applies in example, metal vibration film 1 can also be copper etc..
By high temperature glue bond between piezoelectric ceramic piece 2 and metal vibration film 1, piezoelectric ceramic piece 2 requires dielectric constant to exist
3500 or more, size is the 28% to 40% best of metal vibration film 1, and in the present embodiment, the diameter of piezoelectric ceramic piece 2 is 25
~ 35mm, with a thickness of 0.2 ~ 0.3mm.
3 piezoelectric ceramic piece 2 of metal gasket uses high temperature glue bond, and the single group of 35Mpa is specially greater than using shear strength
Part epoxy resin is pasted, and 120 DEG C of solidification temperature or more, the glue-line of formation can bear high-intensitive vibration frequency.
In addition, the size of metal gasket 3 is the 10% ~ 25% of piezoelectric ceramic piece 2, with a thickness of 0.05 ~ 0.10mm, the present embodiment
In, metal gasket 3 is adopted as copper sheet, has good welding effect, and density and ductility are moderate.
Conducting wire 5 is welded on the surface of metal gasket 3 by scolding tin, and the active force after welding is on metal gasket 3, metal
Bigger contact surface is formed between gasket 3 and ceramics, is avoided under the situation of no metal gasket 3, and the solder joint 4 of bonding wire is direct
It acts on piezoelectricity tile surface, when influence and power of the temperature of welding to ceramic glue-line increase big, individual solder joint 4 is connected
It is unlikely to separate or loosens.
Furthermore the solder joint 4 being welded on copper sheet is coated with protective glue reinforcing after welding, is attained by under high-frequency vibration
The product quality that solder joint 4 is not fallen off, protective glue uses epoxy resin AB glue in the present embodiment.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (7)
1. a kind of piezoelectricity singing piece, including metal vibration film (1) and piezoelectric ceramic piece (2), it is characterized in that: the piezoelectric ceramics
Be bonded on piece (2) metal gasket (3), the metal gasket (3) and conducting wire (5) are welded, the metal gasket (3) with a thickness of
0.05~0.10mm。
2. piezoelectricity singing piece according to claim 1, it is characterized in that: the area of the piezoelectric ceramic piece (2) is metal vibration
28% to the 40% of dynamic film (1) area.
3. piezoelectricity singing piece according to claim 1 or 2, it is characterized in that: the metal vibration film (1) is stainless steel substrates,
Size diameter is 40 ~ 65mm, with a thickness of 0.2 ~ 0.3mm.
4. piezoelectricity singing piece according to claim 3, it is characterized in that: the size diameter of the piezoelectric ceramic piece (2) be 25 ~
35mm, with a thickness of 0.2 ~ 0.3mm.
5. piezoelectricity singing piece according to claim 1 or 2, it is characterized in that: the area of the metal gasket (3) is piezoelectricity pottery
The 10% ~ 25% of tile (2) area.
6. piezoelectricity singing piece according to claim 1 or 2, it is characterized in that: the weldering of the metal gasket (3) and conducting wire (5)
Protective glue is also coated with outside contact.
7. a kind of alarm, it is characterized in that: including the piezoelectricity singing piece as described in claim 1 to 6 is any.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018217065558 | 2018-10-20 | ||
| CN201821706555 | 2018-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209249067U true CN209249067U (en) | 2019-08-13 |
Family
ID=67526271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821764117.7U Active CN209249067U (en) | 2018-10-20 | 2018-10-29 | Piezoelectricity singing piece and alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209249067U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112538609A (en) * | 2020-12-10 | 2021-03-23 | 广州凯立达电子股份有限公司 | Magnetron sputtering coating process for piezoelectric ceramic piece and application |
-
2018
- 2018-10-29 CN CN201821764117.7U patent/CN209249067U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112538609A (en) * | 2020-12-10 | 2021-03-23 | 广州凯立达电子股份有限公司 | Magnetron sputtering coating process for piezoelectric ceramic piece and application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Piezoelectric buzzer and alarm Effective date of registration: 20210701 Granted publication date: 20190813 Pledgee: Development Zone sub branch of Bank of Guangzhou Co.,Ltd. Pledgor: GUANGZHOU KAILITECH ELECTRONICS Co.,Ltd. Registration number: Y2021980005667 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220805 Granted publication date: 20190813 Pledgee: Development Zone sub branch of Bank of Guangzhou Co.,Ltd. Pledgor: GUANGZHOU KAILITECH ELECTRONICS Co.,Ltd. Registration number: Y2021980005667 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |