CN207652691U - A kind of piezoelectricity sound-producing device - Google Patents
A kind of piezoelectricity sound-producing device Download PDFInfo
- Publication number
- CN207652691U CN207652691U CN201721622138.0U CN201721622138U CN207652691U CN 207652691 U CN207652691 U CN 207652691U CN 201721622138 U CN201721622138 U CN 201721622138U CN 207652691 U CN207652691 U CN 207652691U
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- China
- Prior art keywords
- driver plate
- vibrating diaphragm
- producing device
- piezoelectricity
- sound
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- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 230000010355 oscillation Effects 0.000 abstract description 4
- 230000001755 vocal effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
The utility model discloses a kind of piezoelectricity sound-producing device, including shell and the vibrating diaphragm that is carried on shell；The connecting pin of driver plate, the driver plate is connected on shell, and the driver plate vacantly fits together in housing cavity, and with vibrating diaphragm except the position of connecting pin；Piezoelectric element, the piezoelectric element are distributed in the position of neighbouring driver plate connecting pin, and are configured as that vibrating diaphragm, driver plate is driven to be vibrated.The sound-producing device of the utility model, when piezoelectric element is when the position close to driver plate connecting pin works, due to driver plate except the position of its connecting pin is suspended in housing cavity, this allow for driver plate, on vibrating diaphragm one end opposite with driver plate connecting pin vibration displacement with regard to relatively large, to improve the Oscillation Amplitude of driver plate, vibrating diaphragm, the vocal performance of sound-producing device is improved.
Description
Technical field
The utility model is related to electroacoustic field, more particularly, to a kind of sound-producing device more particularly to a kind of piezoelectricity is used
The sound-producing device of principle driving.
Background technology
It deepens continuously with the development of science and technology and to basic material research, electronics and IT products are gradually closed extensively
Note.Piezoelectric speaker is compared with traditional electro-acoustic element, because it has many advantages, such as that light, thin, high frequency performance is good, waterproof, is able to
It is quickly promoted in electroacoustic field.Piezoelectric speaker does not have magnetic circuit system, can effectively resist electromagnetic interference, substantially reduce product
Thickness, but since also there are a certain distance with traditional electro-acoustic element in terms of acoustical behavior for piezoelectric speaker.Such as piezoelectricity
The sound quality that piece stretching vibration itself gives off is sharp, and the vibration displacement that extensional vibration generates is relatively small, the acoustic pressure given off
It is relatively low.In addition, because conventional piezoelectric piece and vibrating diaphragm are adhered directly to together, the thickness of vibrating diaphragm, pliable and toughness directly affect piezoelectric patches
Vibrational state, while vibrating diaphragm causes to constrain to the vibration of piezoelectric patches to a certain extent.
Utility model content
One purpose of the utility model is to provide a kind of new solution of piezoelectricity sound-producing device.
It is according to the present utility model in a first aspect, provide a kind of piezoelectricity sound-producing device, including：
Shell and the vibrating diaphragm being carried on shell；
Driver plate, on the housing, the driver plate is outstanding except the position of connecting pin for the connecting pin connection of the driver plate
Sky fits together in the housing cavity, and with the vibrating diaphragm；
Piezoelectric element, the piezoelectric element are distributed in the position of the neighbouring driver plate connecting pin, and are configured as driving
Vibrating diaphragm, driver plate are vibrated.
Optionally, the region Chong Die with driver plate is arranged on vibrating diaphragm in the piezoelectric element, or is arranged on driver plate.
Optionally, the piezoelectric element includes the first piezoelectric unit being arranged on vibrating diaphragm or driver plate side and setting
The second piezoelectric unit on the driver plate other side.
Optionally, first piezoelectric unit and the second piezoelectric unit are symmetrical arranged.
Optionally, first piezoelectric unit, the second piezoelectric unit are integrally suspended in the inner cavity of shell.
Optionally, first piezoelectric unit, the identical one end of the second piezoelectric unit and driver plate connecting pin are separately connected
On shell.
Optionally, the shell includes the lower casing for having inner cavity, and the edge of the vibrating diaphragm is carried on the side wall of lower casing；Institute
State the first piezoelectric unit, the second piezoelectric unit, driver plate one end edge be carried on the upper end of lower case side wall respectively.
Optionally, the shell further includes the upper casing snapped together with lower casing, the vibrating diaphragm, the first piezoelectric unit,
Two piezoelectric units, driver plate are clamped between the side wall of upper casing, lower casing.
Optionally, connection lower casing inner cavity and extraneous relief hole are additionally provided on the lower casing.
Optionally, hollow out is provided on the vibrating diaphragm, the edge of the driver plate is bonded in the edge of vibrating diaphragm hollow out, and
The hollow out of vibrating diaphragm is covered.
The sound-producing device of the utility model, when piezoelectric element is in the position work close to driver plate connecting pin, due to passing
Movable plate is suspended at except the position of its connecting pin in housing cavity, this allows for driver plate, opposite with driver plate connecting pin on vibrating diaphragm
One end vibration displacement with regard to relatively large, to improve the Oscillation Amplitude of driver plate, vibrating diaphragm, improve the hair of sound-producing device
Acoustic performance.
By referring to the drawings to the detailed description of the exemplary embodiment of the utility model, the utility model it is other
Feature and its advantage will become apparent.
Description of the drawings
It is combined in the description and the attached drawing of a part for constitution instruction shows the embodiments of the present invention, and
And together with its explanation for explaining the principles of the present invention.
Fig. 1 is the structural schematic diagram of the utility model sound-producing device.
Fig. 2 is the explosive view of the utility model sound-producing device.
Fig. 3 is the sectional view of the utility model sound-producing device.
Specific implementation mode
The various exemplary embodiments of the utility model are described in detail now with reference to attached drawing.It should be noted that：Unless another
It illustrates outside, the component and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is unlimited
The scope of the utility model processed.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to this practicality
Novel and its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
Referring to figs. 1 to Fig. 3, the utility model provides a kind of piezoelectricity sound-producing device comprising shell and is connected to shell
Vibrating diaphragm 3 on body, the driver plate 4 to fit together with vibrating diaphragm 3；It further include the piezoelectric element for driving driver plate 4, vibrating diaphragm 3 to vibrate.
Under the driving of piezoelectric element so that driver plate 4,3 synchronous vibration sounding of vibrating diaphragm.
Specifically, the shell of the utility model may include the upper casing 2 for snapping together and surrounding inner cavity, lower casing 1.Vibrating diaphragm
3 may be used material well-known to those skilled in the art, such as single layer or layer high molecule film, organosilicon glued membrane etc..
Vibrating diaphragm 3 may include the interconnecting piece positioned at marginal position, the vibration section positioned at central region, and positioned at interconnecting piece, vibration section
Between ring portion.Certainly, vibrating diaphragm 3 can also be plane diaphragm, and as vibrating diaphragm includes positioned at the interconnecting piece of marginal position, by even
Socket part extend positioned at the vibration section of central region, it is without limitation.It, can be by interconnecting piece by vibrating diaphragm 3 when installation
It is clamped between upper casing 2 and the side wall of lower casing 1, to which vibrating diaphragm 3 is supported in the inner cavity of shell, this mounting means, structure
The common knowledge for belonging to those skilled in the art, no longer illustrates herein.
Wherein, the inner cavity between vibrating diaphragm 3 and upper casing 2 is the preceding operatic tunes of sound-producing device, in order to make the sound that vibrating diaphragm 3 is sent out can
With outflow, the acoustic aperture spread out of for sound or engraved structure 20 are provided on upper casing 2.Inner cavity between vibrating diaphragm 3 and lower casing 1 is
The rear operatic tunes of sound-producing device is also provided with the operatic tunes and extraneous relief hole 10 after connection on lower casing 1, this belongs to this field skill
The common knowledge of art personnel, no longer illustrates herein.
The shape of driver plate 4 can match with the shape of vibrating diaphragm 3, such as when vibrating diaphragm 3 is using rectangular configuration, then be driven
Plate 4 can also use rectangle.One end of 4 short side of driver plate can be used as its connecting pin, the connecting pin of the driver plate 4 is clamped on
Between shell 2 and lower casing 1 so that driver plate 4 extends into the inner cavity of shell and is bonded with vibrating diaphragm 3 except the other positions of the connecting pin
Together.Such as driver plate 4 can be bonded on vibrating diaphragm 3 by glue material.The part and shell that driver plate 4 extends to housing cavity
Between connectionless relationship so that it can vacantly in the inner cavity of shell.
Wherein, driver plate 4 can be fitted in the upper end of vibrating diaphragm 3, can also be fitted in the lower end of vibrating diaphragm 3, not limit herein
System.In addition, driver plate 4 can be directly attached on the surface of vibrating diaphragm 3；In one specific embodiment of the utility model,
Hollow out can be set on vibrating diaphragm 3, and the edge of driver plate 4 is bonded in the fringe region of 3 hollow out of vibrating diaphragm, to realize vibrating diaphragm 3 and pass
The fitting of movable plate 4, and covered the hollow out of vibrating diaphragm 3 by the driver plate 4.
Since driver plate 4 and vibrating diaphragm 3 fit together, piezoelectric element can be arranged on driver plate 4, can also set
It sets on vibrating diaphragm 3, can play the role of driving driver plate 4,3 synchronous vibration of vibrating diaphragm.Herein it should be noted that working as piezoelectricity group
Part is arranged when on vibrating diaphragm 3, and Chong Die with driver plate 4 region on vibrating diaphragm 3 is arranged in piezoelectric element needs, so as to the piezoelectricity group
The vibration of part can be transmitted by driver plate 4.
In one preferred embodiment of the utility model, piezoelectric element includes the first piezoelectric unit 5, the second piezoelectricity list
Member 6.First piezoelectric unit 5 is arranged in the side of driver plate 4, and the second piezoelectric unit 6 is arranged on the other side of driver plate 4.Ginseng
The view direction of Fig. 3 is examined, the first piezoelectric unit 5 is arranged to be sticked on the side of vibrating diaphragm 3 (upside of driver plate 4) in driver plate 4, the
The side (downside of driver plate 4) far from vibrating diaphragm 3 is arranged on driver plate 4 in two piezoelectric units 6.Wherein, the first piezoelectric unit 5 with
Second piezoelectric unit 6 is preferably symmetrical arranged so that can be improved the Oscillation Amplitude of vibrating diaphragm 3, driver plate 4, but also can be inhibited
The polarization problem of vibrating diaphragm 3, driver plate 4 improves the pronunciation performance of sound-producing device.
It should be noted that the position Chong Die with driver plate in vibrating diaphragm can be arranged in the first piezoelectric unit 5.At this point, first
Piezoelectric unit 5 is arranged on vibrating diaphragm 3, and the second piezoelectric unit 6 is arranged on driver plate 4, is not limited herein.
Wherein, it should be noted that each piezoelectric unit can be a piezoelectric patches or piezoelectric membrane, can also be multiple
Piezoelectric patches or multiple piezoelectric membranes.These piezoelectric units are distributed in the position of neighbouring 4 connecting pin of driver plate, such as when each piezoelectricity
When the piezoelectric patches of unit uses multiple, multiple piezoelectric patches can be arranged along the width direction of driver plate 4；Can also be, it is more
After a piezoelectric patches overlaps in attachment to vibrating diaphragm 3 and/or on driver plate 4.In addition, when using the driving of multi-disc piezoelectric patches,
Every piezoelectric patches can also load identical or different voltage according to demand, this belongs to public for those skilled in the art
Know common sense, no longer illustrates herein.
When piezoelectric patches is in the position work close to 4 connecting pin of driver plate, due to driver plate 4 except the position of its connecting pin is outstanding
It sets in housing cavity, this allows for driver plate 4 and constitutes cantilever beam structure, and driver plate 4, which is connected thereto, holds opposite one end
Vibration displacement, to improve the Oscillation Amplitude of driver plate 4, vibrating diaphragm 3, improves the sounding of sound-producing device with regard to relatively large
Energy.
First piezoelectric unit 5, the second piezoelectric unit 6 of the utility model can be integrally suspended in the inner cavity of shell,
That is connectionless relationship between the first piezoelectric unit 5, the second piezoelectric unit 6 and upper casing 2, lower casing 1, the first piezoelectric unit 5,
Two piezoelectric units 6 are only suspended at by vibrating diaphragm 3, driver plate 4 in the inner cavity of shell.
In one preferred embodiment of the utility model, the first piezoelectric unit 5, the second piezoelectric unit 6 and driver plate 4
The identical one end in connecting pin is clamped in the position between upper casing 2 and lower casing 1 respectively, so that the first piezoelectric unit 5, second is pressed
One end of electric unit 6 is fixed on shell, the first piezoelectric unit 5, the second piezoelectric unit 6 other positions respectively with vibrating diaphragm 3,
Driver plate 4 fits together, and is suspended in the inner cavity of shell.Using such structure design, piezoelectric patches can be prevented in work
Play problem when making, improves the stability of entire vibrational system.
At this it should be noted that in the embodiment, when the first piezoelectric unit 5 is also disposed on driver plate 4, one end
It is clamped in the position between upper casing 2 and lower casing 1, the other end is needed to cross vibrating diaphragm 3 and be extended on driver plate 4.
The sound-producing device of the utility model, upper casing 2 define encapsulating structure with lower casing 1.In another tool of the utility model
In the embodiment of body, upper casing 2 can not also be set.The edge of vibrating diaphragm 3 can be carried on the upper end of 1 side wall of lower casing；First pressure
Electric unit 5, the second piezoelectric unit 6, driver plate 4 one end be also carried on the upper end of 1 side wall of lower casing respectively.This vibrating diaphragm 3 is exposed
Structure belong to the common knowledge of those skilled in the art, no longer illustrate herein.
Although some specific embodiments of the utility model are described in detail by example, this field
It is to be understood by the skilled artisans that example above merely to illustrate, rather than in order to limit the scope of the utility model.This
Field it is to be understood by the skilled artisans that can not depart from the scope of the utility model and spirit in the case of, to above example
It modifies.The scope of the utility model is defined by the following claims.
Claims (10)
1. a kind of piezoelectricity sound-producing device, which is characterized in that including：
Shell and the vibrating diaphragm being carried on shell；
Driver plate, on the housing, the driver plate vacantly exists except the position of connecting pin for the connecting pin connection of the driver plate
In the housing cavity, and fit together with the vibrating diaphragm；
Piezoelectric element, the piezoelectric element are distributed in the position of the neighbouring driver plate connecting pin, and be configured as driving vibrating diaphragm,
Driver plate is vibrated.
2. piezoelectricity sound-producing device according to claim 1, it is characterised in that：The piezoelectric element is arranged on vibrating diaphragm and biography
The region of movable plate overlapping, or be arranged on driver plate.
3. piezoelectricity sound-producing device according to claim 2, it is characterised in that：The piezoelectric element include setting in vibrating diaphragm or
The first piezoelectric unit on driver plate side and the second piezoelectric unit being arranged on the driver plate other side.
4. piezoelectricity sound-producing device according to claim 3, it is characterised in that：First piezoelectric unit and the second piezoelectricity list
Member is symmetrical arranged.
5. piezoelectricity sound-producing device according to claim 3, it is characterised in that：First piezoelectric unit, the second piezoelectricity list
First entirety is suspended in the inner cavity of shell.
6. piezoelectricity sound-producing device according to claim 3, it is characterised in that：First piezoelectric unit, the second piezoelectricity list
Member one end identical with driver plate connecting pin is connected on shell.
7. piezoelectricity sound-producing device according to claim 6, it is characterised in that：The shell includes the lower casing for having inner cavity,
The edge of the vibrating diaphragm is carried on the side wall of lower casing；First piezoelectric unit, the second piezoelectric unit, driver plate one end side
Edge is carried on the upper end of lower case side wall respectively.
8. piezoelectricity sound-producing device according to claim 7, it is characterised in that：The shell further includes being fastened on one with lower casing
Rise upper casing, the vibrating diaphragm, the first piezoelectric unit, the second piezoelectric unit, driver plate be clamped in upper casing, lower casing side wall it
Between.
9. piezoelectricity sound-producing device according to claim 7, it is characterised in that：Connection lower casing is additionally provided on the lower casing
Inner cavity and extraneous relief hole.
10. piezoelectricity sound-producing device according to claim 1, it is characterised in that：Hollow out is provided on the vibrating diaphragm, it is described
The edge of driver plate is bonded in the edge of vibrating diaphragm hollow out, and the hollow out of vibrating diaphragm is covered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721622138.0U CN207652691U (en) | 2017-11-28 | 2017-11-28 | A kind of piezoelectricity sound-producing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721622138.0U CN207652691U (en) | 2017-11-28 | 2017-11-28 | A kind of piezoelectricity sound-producing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207652691U true CN207652691U (en) | 2018-07-24 |
Family
ID=62882272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721622138.0U Withdrawn - After Issue CN207652691U (en) | 2017-11-28 | 2017-11-28 | A kind of piezoelectricity sound-producing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207652691U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107820184A (en) * | 2017-11-28 | 2018-03-20 | 歌尔股份有限公司 | A kind of piezoelectricity sound-producing device |
-
2017
- 2017-11-28 CN CN201721622138.0U patent/CN207652691U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107820184A (en) * | 2017-11-28 | 2018-03-20 | 歌尔股份有限公司 | A kind of piezoelectricity sound-producing device |
| CN107820184B (en) * | 2017-11-28 | 2023-11-28 | 歌尔股份有限公司 | Piezoelectric sounding device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180724 Effective date of abandoning: 20231128 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180724 Effective date of abandoning: 20231128 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |