CN202957970U - Loudspeaker device - Google Patents
Loudspeaker device Download PDFInfo
- Publication number
- CN202957970U CN202957970U CN 201220611255 CN201220611255U CN202957970U CN 202957970 U CN202957970 U CN 202957970U CN 201220611255 CN201220611255 CN 201220611255 CN 201220611255 U CN201220611255 U CN 201220611255U CN 202957970 U CN202957970 U CN 202957970U
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- Prior art keywords
- elastic device
- piezoelectric patches
- vibrating diaphragm
- ball top
- speaker unit
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Abstract
The utility model discloses a loudspeaker device, which comprises a shell, a vibrating diaphragm and a ball top portion, wherein the shell forms an outer frame of the loudspeaker device, an opening is arranged on one end of the shell to form a sounding portion, the vibrating diaphragm is arranged on a position of the shell corresponding to the sounding portion, and the ball top portion is bonded on one side of the vibrating diaphragm far away from the sounding portion. The loudspeaker device further comprises an elastic device and a piezoelectric plate, wherein the elastic device is hung in the shell, the elastic device is provided with positive and negative conductive electrodes, the piezoelectric plate is arranged on one side of the elastic device close to the vibrating diaphragm, is supported by the elastic device, and is electrically connected with the positive and negative conductive electrodes of the elastic device, the elastic device is provided with an expansion portion, one side of the expansion portion close to the vibrating diaphragm is bonded with the ball top portion, and the elastic device is connected with the ball top portion of the piezoelectric plate. The loudspeaker device has the advantages of low height and excellent sound performance.
Description
Technical field
The utility model relates to the electroacoustic field, especially relates to a kind of piezoelectric speaker.
Background technology
In the consumer electronics products such as electronic product, household appliances, loud speaker is widely used.Along with scientific and technical development, consumer electronics product is more and more perfect, and people are more and more higher to its shape requirement, and its thickness is more and more less, simultaneously, also more and more higher to the requirement of miniaturization, slimming and the sound performance of speaker unit.
Piezoelectric speaker is compared with the conventional loudspeakers device, simple structure, and volume is little, and cost is low, and electro-acoustic conversion efficiency is high.But current piezoelectric speaker exists LF-response poor, sound is the defect such as unmelodious sharply, is difficult to meet the requirement of people to sound performance.
Therefore, be necessary to provide a kind of improvement, the defect existed to overcome current piezoelectric speaker.
The utility model content
It is low that technical problem to be solved in the utility model is to provide a kind of height, the piezoelectric speaker that sound performance is good.
To achieve these goals, the utility model by the following technical solutions: a kind of speaker unit, comprise the shell that forms described speaker unit external frame, an end opening of described shell forms part; Vibrating diaphragm, described vibrating diaphragm is arranged at the corresponding described section position of speaking of described shell; The ball top, described ball top is adhered to described vibrating diaphragm and goes out part one side away from described, and comprises: elastic device, described elastic device is suspended at described enclosure, and described elastic device is provided with positive and negative conductive electrode; Piezoelectric patches, described piezoelectric patches is arranged at described elastic device near described vibrating diaphragm one side, and described elastic device supports described piezoelectric patches, and described piezoelectric patches is electrically connected to the positive and negative conductive electrode of described elastic device; And described elastic device arranges extension, described extension is bonding near described vibrating diaphragm one side and described ball top, and described elastic device connects described piezoelectric patches and described ball top.
As a kind of preferred technical scheme, described piezoelectric patches is two, and described elastic device corresponds to two parts, and described two parts elastic device extension is all bonding with described ball top near described vibrating diaphragm one side.
As further preferred, described two parts elastic device extension is horizontal expansion, and described two horizontal expansion sections are oppositely arranged.
As a kind of preferred technical scheme, described ball top described elastic device relative to described piezoelectric patches be arranged in parallel, and described piezoelectric patches is positioned at described ball top outer.
As further preferred, described piezoelectric patches height is equal to or less than described ball overhead height.
As a kind of preferred technical scheme, described elastic device and described piezoelectric patches bound fraction are provided with the hollow out that material forms.
As a kind of preferred technical scheme, described speaker housings is square structure, and described loud speaker is sequence shaped loudspeaker.
The utility model piezoelectric speaker, elastic device is provided with piezoelectric patches and is suspended in shell, piezoelectric patches is changed by external voltage and produces deformation, the vibration of drive elastic device, be passed to vibrating diaphragm by the ball top, drive the vibrating diaphragm vibration sounding, owing to not adopting magnet and voice coil loudspeaker voice coil, effectively reduce the loud speaker height.Adopt two piezoelectric patches, the corresponding piezoelectric patches of elastic device is divided into identical two parts, and two parts elastic device is provided with horizontal expansion section, two horizontal expansion sections are oppositely arranged, all bonding with the ball top, can increase the sensitivity of oscillating component, improve the speaker unit sound performance.Two piezoelectric patches are arranged at the elastic device homonymy, be arranged in parallel with ball top relative resilient device and are positioned at both sides, ball top, have improved speaker unit inner space utilance, have reduced the speaker unit height; Elastic device and piezoelectric patches bound fraction are provided with the hollow out that material forms, and have changed the intensity of joint portion, and the resonance frequency of having regulated piezoelectric patches has improved the sound performance of speaker unit.To sum up, the utility model piezoelectric speaker has highly low, the advantage that sound performance is good.
The accompanying drawing explanation
Fig. 1 is the utility model speaker unit stereogram.
Fig. 2 is the utility model speaker unit explosive view.
Fig. 3 is the utility model speaker unit optimal technical scheme part parts stereograms.
Fig. 4 is I part enlarged drawing in Fig. 3.
Embodiment
Below in conjunction with accompanying drawing, describe the utility model piezoelectric speaker in detail.
As depicted in figs. 1 and 2, the utility model piezoelectric speaker, include the square shell that forms described speaker unit external frame, described square shell comprises the first shell 11, second housing 12, the first shells 11 are provided with phonate hole, and corresponding described phonate hole is provided with vibrating diaphragm 2.Second housing 12 inside are hung with elastic device 3.Elastic device 3 is fixed with piezoelectric patches 4 near vibrating diaphragm 2 one sides, and elastic device 3 comprises horizontal expansion 31, and horizontal expansion 31 is bonding near vibrating diaphragm 2 one sides and ball top 5, and ball top 5 is bonding with vibrating diaphragm 2.Be provided with positive and negative conductive electrode on elastic device 3, described positive and negative conductive electrode is electrically connected to piezoelectric patches 4 with external electronic circuits.The utility model piezoelectric speaker, piezoelectric patches 4 is subject to the external circuit change in voltage to produce deformation, drives elastic device 3 vibrations, and horizontal expansion 31 and 5 combinations of ball top of elastic device 3, be passed to vibrating diaphragm 2 by vibration, drives vibrating diaphragm 2 vibration soundings.The utility model piezoelectric speaker does not adopt coil and magnet, effectively reduces the speaker unit height, has simplified production technology.
As shown in Figure 2, the utility model piezoelectric speaker comprises two piezoelectric patches 4, corresponding with it, be provided with two parts elastic device 3, two parts elastic device 3 is suspended at respectively two opposite side avris of second housing 12 square structure, two piezoelectric patches 4 also correspondence are arranged at two opposite side avris of second housing 12 square structure, are positioned at outside both sides, ball top 5.Two parts elastic device 3 is provided with positive and negative conductive electrode, and two piezoelectric patches 4 are electrically connected to the positive and negative conductive electrode of corresponding elastic device respectively.It is all bonding with ball top 5 near vibrating diaphragm 2 one sides that two parts elastic device 3 is provided with 31, two horizontal expansions of horizontal expansion 31.Two piezoelectric patches 4 and ball top 5 all are arranged at elastic device 3 near vibrating diaphragm 2 one sides, two piezoelectric patches 4 are relative with ball top 5 parallel with elastic device 3, be distributed in outside both sides, ball top 5 simultaneously, improved the inside loudspeakers space availability ratio, effectively reduce the speaker unit height, increase the oscillation space at vibration position, improve the sound performance of speaker unit.Piezoelectric patches 4 highly is equal to or less than ball top 5 height, avoids the interference of 4 pairs of vibrating diaphragms of piezoelectric patches, 2 vibrations, improves the sound performance of speaker unit.Should know, these are only embodiment of the utility model piezoelectric speaker, in the actual design production process, may adopt multi-disc piezoelectric patches 4, within all belonging to the protection range of the utility model piezoelectric speaker claims.
As the embodiment of further optimization, as shown in Figure 3 and Figure 4, the binding site that elastic device 3 is connected with piezoelectric patches 4 is provided with the hollow out 32 that material forms.Hollow out 32 can change the intensity of piezoelectric patches 4 and elastic device 3 joint portions, regulates the resonance frequency of piezoelectric patches 4, improves the sound performance of piezoelectric speaker.
The utility model speaker unit piezoelectric patches 4 and elastic device 3 combinations, piezoelectric patches 4 is subject to the external voltage variable effect to produce deformation, drives elastic device 3 vibrations, by ball top 5, is passed to vibrating diaphragm 2, drives vibrating diaphragm 2 vibration soundings.The utility model piezoelectric speaker has omitted the design of magnet and voice coil loudspeaker voice coil, effectively reduces the speaker unit height.Two piezoelectric patches 4 all are positioned at elastic device 3 near vibrating diaphragm 2 one sides with ball top 5, and be arranged in parallel with respect to elastic device 3, two piezoelectric patches 4 lay respectively at ball top 5 both sides external simultaneously, improved the speaker unit space availability ratio, reduced the speaker unit height, increase the oscillation space of speaker unit vibration section simultaneously, improve the speaker unit sound performance.Piezoelectric patches 4 highly is equal to or less than ball top 5 height, avoids the interference of 4 pairs of vibrating diaphragms of piezoelectric patches, 2 vibrations, guarantees the sound performance of speaker unit.Elastic device 3 is provided with piezoelectric patches 4 contact sites the hollow out 32 that material forms, and the resonance frequency of having regulated piezoelectric patches 4 has been improved the sound performance of the utility model piezoelectric speaker.Therefore, the utility model piezoelectric speaker has highly low, the advantage that sound performance is good.
These are only the utility model case study on implementation, be not limited to the utility model, as long as the equivalence that those of ordinary skills do according to the utility model institute disclosure is modified or changed, all should include in the protection range of putting down in writing in claims.
Claims (7)
1. a speaker unit, comprising: form the shell of described speaker unit external frame, an end opening of described shell forms part; Vibrating diaphragm, described vibrating diaphragm is arranged at the corresponding described section position of speaking of described shell; The ball top, described ball top is adhered to described vibrating diaphragm and goes out part one side away from described, it is characterized in that, also comprises: elastic device, described elastic device is suspended at described enclosure, and described elastic device is provided with positive and negative conductive electrode; Piezoelectric patches, described piezoelectric patches is arranged at described elastic device near described vibrating diaphragm one side, and described elastic device supports described piezoelectric patches, and described piezoelectric patches is electrically connected to the positive and negative conductive electrode of described elastic device; And described elastic device arranges extension, described extension is bonding near described vibrating diaphragm one side and described ball top, and described elastic device connects described piezoelectric patches and described ball top.
2. speaker unit according to claim 1, it is characterized in that: described piezoelectric patches is two, and described elastic device corresponds to two parts, described two parts elastic device extension is all bonding with described ball top near described vibrating diaphragm one side.
3. speaker unit according to claim 2, it is characterized in that: described two parts elastic device extension is horizontal expansion, and described two horizontal expansion sections are oppositely arranged.
4. speaker unit according to claim 1, it is characterized in that: described ball top described elastic device relative to described piezoelectric patches be arranged in parallel, and described piezoelectric patches is positioned at described ball top outer.
5. speaker unit according to claim 1, it is characterized in that: described piezoelectric patches height is equal to or less than described ball overhead height.
6. speaker unit according to claim 1 is characterized in that: described elastic device and described piezoelectric patches bound fraction are provided with the hollow out that material forms.
7. speaker unit according to claim 1, it is characterized in that: described speaker housings is square structure, described loud speaker is sequence shaped loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220611255 CN202957970U (en) | 2012-11-19 | 2012-11-19 | Loudspeaker device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220611255 CN202957970U (en) | 2012-11-19 | 2012-11-19 | Loudspeaker device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202957970U true CN202957970U (en) | 2013-05-29 |
Family
ID=48463520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220611255 Expired - Lifetime CN202957970U (en) | 2012-11-19 | 2012-11-19 | Loudspeaker device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202957970U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946581A (en) * | 2012-11-19 | 2013-02-27 | 歌尔声学股份有限公司 | Loudspeaker device |
-
2012
- 2012-11-19 CN CN 201220611255 patent/CN202957970U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946581A (en) * | 2012-11-19 | 2013-02-27 | 歌尔声学股份有限公司 | Loudspeaker device |
| CN102946581B (en) * | 2012-11-19 | 2015-06-03 | 歌尔声学股份有限公司 | Loudspeaker device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: GOERTEK Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130529 |