CN202334869U - Vibrating-diaphragm type piezoelectric loudspeaker - Google Patents
Vibrating-diaphragm type piezoelectric loudspeaker Download PDFInfo
- Publication number
- CN202334869U CN202334869U CN2011203115367U CN201120311536U CN202334869U CN 202334869 U CN202334869 U CN 202334869U CN 2011203115367 U CN2011203115367 U CN 2011203115367U CN 201120311536 U CN201120311536 U CN 201120311536U CN 202334869 U CN202334869 U CN 202334869U
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- CN
- China
- Prior art keywords
- piezoelectric ceramic
- metal base
- ceramic piece
- diaphragm
- base material
- 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 - Lifetime
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Abstract
The utility model provides a vibrating-diaphragm type piezoelectric loudspeaker, which is characterized by being provided with a shell, a lead and a connecting body, wherein the shell is provided with an opening, and the edge of a sound diaphragm is bonded at the opening of the shell; a metallic base material is bonded in the shell, two piezoelectric ceramic pieces are respectively fixedly arranged on the upper surface and the lower surface of the metallic base material, and the lead is used for connecting the two piezoelectric ceramic pieces; the connecting body is used for connecting the middle part of the piezoelectric ceramic piece positioned on the upper surface of the metallic base material and the middle part of the sound diaphragm; and one audio feeder is connected with the metallic base material, and the other audio feeder is connected with any of the piezoelectric ceramic pieces. The metallic base material is in the shape of a circular arc or an irregular arc. The vibrating-diaphragm type piezoelectric loudspeaker has low lowest resonant frequency, flat frequency response and soft and pleasant sounds.
Description
Technical field
The utility model relates to a kind of stereo set, relates in particular to a kind of diaphragm-vibrating type piezoelectric speaker.
Background technology
At electronic product, in the consumer electronics such as household appliances, loud speaker is widely used.Development in science and technology in recent years, piezoelectric speaker is compared with traditional coil-moving speaker to be possessed: volume is little, and technology is simple, and cost is low, characteristics such as electro-acoustic conversion efficiency height, and be widely used.
But, defective such as present piezoelectric speaker exists, and lowest resonance frequency is high, and sound is sharp-pointed, and is unmelodious.Along with the user require increasingly highly, in order to satisfy the requirement in market, more comprehensively requirement has been proposed for the designing and manufacturing level of piezoelectric speaker, it is very urgent to improve the piezoelectric speaker design.
The utility model content
The utility model provides a kind of diaphragm-vibrating type piezoelectric speaker, and its purpose is to prior art not enough, provides a kind of lowest resonance frequency low, and frequency response is smooth, and is gentle in voice, melodious diaphragm-vibrating type piezoelectric speaker.
The utility model solves the technical scheme that its technical problem adopted:
A kind of diaphragm-vibrating type piezoelectric speaker is characterized in that: have housing, housing has opening, and the sound film edge is adhered to the shell nozzle place; Interior the gluing of housing is provided with metal base, and two piezoelectric ceramic pieces are fixedly arranged on the upper surface and the lower surface of metal base respectively, have lead and connect said two piezoelectric ceramic pieces; Have connector and connect the middle part of the piezoelectric ceramic piece that is positioned at the metal base upper surface and the middle part of said sound film; An audio frequency feeder line connects metal base, and another root audio frequency feeder line connects above-mentioned any a slice piezoelectric ceramic piece.
Metal base is shaped as circular arc or irregular arc.
The usefulness of the utility model is:
1. the diaphragm-vibrating type piezoelectric speaker is by traditional sound film, housing, and piezoelectric ceramic piece and metal base, lead is formed, and volume is little, and rational in infrastructure be modern ultrathin specially, and power conservation type electronic product and household electrical appliances design.
2. utilize the inverse piezoelectric effect of piezoelectric ceramic, audio sensitivity is high, and power consumption stream is little, energy-conservation.
3. owing to adopt traditional sound film and potsherd metal base bending design, lowest resonance frequency is low, frequency range wide (150Hz---20KHz).
4. compare traditional coil-moving speaker, production technology is simple, and cost is low, and reliability is high.
Description of drawings
Fig. 1 is the utility model diaphragm-vibrating type piezoelectric speaker front elevation;
Fig. 2: be the A-A profile of Fig. 1.
Embodiment
Provide embodiment below and the utility model is described further.Be necessary to be pointed out that at this following examples can not be interpreted as the restriction to the utility model protection range.If the those of ordinary skill personnel in this field make some nonessential improvement and adjustment according to above-mentioned the utility model content to the utility model, still belong to the utility model protection range.
The utility model comprise prior art material sound film 1 (like the mixture of paper and PU, the mixture of paper and foam, PU; PEI, PET, the sound film that various prior art materials such as PI are processed); The one side of plastic casing 5 is open openings, and the edge of sound film 1 is adhered to the opening part of plastic casing 5; Metal base 4 (such as: the Metal Flake metal base that copper material is processed) be shaped as circular-arc plates; Also can make the plates of the outer edge line of irregular arc; Metal base 4 can be done in the arc-shaped or irregular arc; Thereby change the Fo of piezoelectric speaker, thereby reach better acoustical quality.Rectangle piezoelectric ceramic piece A2 and rectangle piezoelectric ceramic piece B3 are adhered to the upper surface and the lower surface of metal base 4 respectively; The part bending that metal base 4 is not established piezoelectric ceramic piece is twisted into wavy crooked 41; The edge of metal base 4 is adhered in the plastic casing 5; The mid portion of sound film 1 is connected to a fixed with the mid portion connector 6 that form with viscose glue or that rivet forms of the rectangle piezoelectric ceramic piece 2 that is positioned at metal base 4 upper surfaces; The two ends of lead D7 respectively with rectangle piezoelectric ceramic piece A2, rectangle piezoelectric ceramic piece B3 welding is welded an audio frequency feeder line E8 from rectangle piezoelectric ceramic piece A2 or rectangle piezoelectric ceramic piece B3 then; Simultaneously at welding audio frequency feeder line F9 on metal base 4; Drive piezoelectric ceramic piece A2 and piezoelectric ceramic piece B3 vibration from audio frequency feeder line E8 and audio frequency feeder line F9 input audio signal, thereby drive sound film 1 to the external radiation vibration, promote the air medium sounding through connector 6.
When making the utility model, earlier rectangle piezoelectric ceramic piece A2 for preparing and rectangle piezoelectric ceramic piece B3 are affixed on metal base 4 tow sides respectively; Circular arc or irregular arc process are done in metal base 4 marginal portions; The double-edged rectangle piezoelectric ceramic piece A2 and the rectangle piezoelectric ceramic piece B3 that are communicated with metal base 4 then with lead D7 welding; Audio frequency feeder line E8 of welding on any a slice piezoelectric ceramic piece of metal base 4 tow sides rectangle piezoelectric ceramic piece A2 and rectangle piezoelectric ceramic piece B3 welds an audio frequency feeder line F9 from metal base 4 simultaneously again; After the completion metal base 4 viscose glues are fixed in the plastic casing 5; Again sound film 1 edge viscose glue is fixed on the plastic casing 5; At last sound film 1 mid portion and piezoelectric ceramic piece A2 mid portion are adopted gluing connect or rivet is fixed.
Claims (2)
1. diaphragm-vibrating type piezoelectric speaker, it is characterized in that: have housing, housing has opening, and the sound film edge is adhered to the shell nozzle place; Interior the gluing of housing is provided with metal base, and two piezoelectric ceramic pieces are fixedly arranged on the upper surface and the lower surface of metal base respectively, have lead and connect said two piezoelectric ceramic pieces; Have connector and connect the middle part of the piezoelectric ceramic piece that is positioned at the metal base upper surface and the middle part of said sound film; An audio frequency feeder line connects metal base, and another root audio frequency feeder line connects above-mentioned any a slice piezoelectric ceramic piece.
2. diaphragm-vibrating type piezoelectric speaker as claimed in claim 1, it is characterized in that: metal base is shaped as circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203115367U CN202334869U (en) | 2011-08-25 | 2011-08-25 | Vibrating-diaphragm type piezoelectric loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203115367U CN202334869U (en) | 2011-08-25 | 2011-08-25 | Vibrating-diaphragm type piezoelectric loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202334869U true CN202334869U (en) | 2012-07-11 |
Family
ID=46446831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203115367U Expired - Lifetime CN202334869U (en) | 2011-08-25 | 2011-08-25 | Vibrating-diaphragm type piezoelectric loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202334869U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102291654A (en) * | 2011-08-25 | 2011-12-21 | 常州声翔电子有限公司 | Vibrating diaphragm type piezoelectric loudspeaker |
| CN108566602A (en) * | 2018-05-10 | 2018-09-21 | Oppo广东移动通信有限公司 | Screen assembly, back board module, center component, terminal device, sounding control method and audio frequency apparatus |
| CN113079441A (en) * | 2020-01-06 | 2021-07-06 | 北京小米移动软件有限公司 | Loudspeaker and terminal equipment |
-
2011
- 2011-08-25 CN CN2011203115367U patent/CN202334869U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102291654A (en) * | 2011-08-25 | 2011-12-21 | 常州声翔电子有限公司 | Vibrating diaphragm type piezoelectric loudspeaker |
| CN108566602A (en) * | 2018-05-10 | 2018-09-21 | Oppo广东移动通信有限公司 | Screen assembly, back board module, center component, terminal device, sounding control method and audio frequency apparatus |
| CN113079441A (en) * | 2020-01-06 | 2021-07-06 | 北京小米移动软件有限公司 | Loudspeaker and terminal equipment |
| CN113079441B (en) * | 2020-01-06 | 2022-09-02 | 北京小米移动软件有限公司 | Loudspeaker and terminal equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |