CN206302567U - Piezoelectric speaker - Google Patents
Piezoelectric speaker Download PDFInfo
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- CN206302567U CN206302567U CN201621281759.2U CN201621281759U CN206302567U CN 206302567 U CN206302567 U CN 206302567U CN 201621281759 U CN201621281759 U CN 201621281759U CN 206302567 U CN206302567 U CN 206302567U
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Abstract
The utility model is related to a kind of piezoelectric speaker.The piezoelectric speaker includes：Vibration plate and piezoelectric patches are passed, the piezoelectric patches is fixedly installed on the biography vibration plate, is had on the biography vibration plate and is taken off post, described to take off post positioned at the center of the piezoelectric patches, described taking off post stretches out from the biography vibration plate；Vibrating diaphragm, the vibrating diaphragm be arranged in parallel with the piezoelectric patches and biography vibration plate, and described taking off post be connected with the vibrating diaphragm；Circuit unit, the circuit unit is electrically connected with the piezoelectric patches；Housing, the housing is configured to carry the biography vibration plate, piezoelectric patches, vibrating diaphragm and circuit unit.A technical problem to be solved in the utility model is the amplitude for how increasing piezoelectric speaker.
Description
Technical field
The utility model belongs to loudspeaker techniques field, and specifically, the utility model is related to a kind of piezoelectric speaker.
Background technology
With the development of consumer electronics product, the performance and basic material of electronic product are gradually improved and change
Enter.Loudspeaker is important accessory in consumer electronics product, for the electroacoustic conversion of earphone, loudspeaker.Traditional loudspeaker
It is coil-moving speaker, novel pressure electric-type loudspeaker has been engendered in the prior art.Piezoelectric speaker and traditional zund-Burguet apparatus
Part is compared, and because it has the advantages that frivolous, high frequency performance is good, waterproof, is able to quickly be promoted in electroacoustic field.Piezoelectricity is raised one's voice
Device does not have magnetic circuit system, can effectively resist electromagnetic interference, substantially reduces product thickness,
It is main at present but existing piezoelectric speaker also has a certain distance in terms of acoustical behavior with traditional loudspeaker
There is following technical problem：1st, piezoelectric speaker harmonic distortion is higher, and medium-high frequency section frequency response curve is extremely unsmooth；2nd, piezoelectric patches
Itself is frangible, and inside loudspeakers structure design is restricted；3rd, the tonequality that piezoelectric patches stretching vibration itself gives off is sharp, and longitudinal direction
The vibration displacement for vibrating generation is relatively small, and the acoustic pressure for giving off is relatively low.4th, because piezoelectric patches and vibrating diaphragm are adhered directly to together, vibrating diaphragm
Thickness, pliable and toughness directly affect the vibrational state of piezoelectric patches, while vibration of the vibrating diaphragm to piezoelectric patches is made to a certain extent
Into constraint.5th, vibrating diaphragm and piezoelectric patches directly bond together, and when vibrating diaphragm is flexible material and piezoelectric piece bonding, easily produce bubble
And fold, product acoustical behavior is impacted.
Thus, it is necessary to piezoelectric speaker is improved, to solve the above problems.
Utility model content
A purpose of the present utility model is to provide a kind of improved piezoelectric speaker.
According to one side of the present utility model, there is provided a kind of piezoelectric speaker, the piezoelectric speaker includes：Pass vibration plate and
Piezoelectric patches, the piezoelectric patches is fixedly installed on the biography vibration plate, is had on the biography vibration plate and is taken off post, and described taking off post is located at
The center of the piezoelectric patches, described taking off post stretches out from the biography vibration plate；Vibrating diaphragm, the vibrating diaphragm and the piezoelectricity
Piece and biography vibration plate be arranged in parallel, and described taking off post be connected with the vibrating diaphragm；Circuit unit, the circuit unit and the piezoelectric patches
Electrical connection；Housing, the housing is configured to carry the biography vibration plate, piezoelectric patches, vibrating diaphragm and circuit unit.
Alternatively, the piezoelectric patches is attached on a side surface of the biography vibration plate, described to take off post from the biography vibration plate
Another side surface stretch out.
Alternatively, described taking off post extend along perpendicular to the direction of the biography vibration plate.
Alternatively, rectangular of the piezoelectric patches, the biography vibration plate matches with the geomery of the piezoelectric patches.
Alternatively, the vibrating diaphragm has center and ring area, and the ring area is located at the periphery of the center, described
Center matches with the geomery of the piezoelectric patches, and described taking off post be connected with the center.
Alternatively, there is composite bed, the end for taking off post is fixedly connected with the composite bed on the center.
Alternatively, the periphery for passing vibration plate is provided with fixed part, and the fixed part is configured to be fixed with the housing and connects
Connect.
Alternatively, there is ring portion between the fixed part and the biography vibration plate.
Alternatively, the circuit unit includes flexible PCB, and the flexible PCB is fixedly connected with the biography vibration plate,
The flexible PCB is electrically connected with the piezoelectric patches.
Alternatively, the material for passing vibration plate is metal, plastics or polymer composite.
One of the present utility model has technical effect that, the vibration of piezoelectric patches can be passed into vibrating diaphragm by passing vibration plate,
So that vibrating diaphragm can produce the bigger amplitude of amplitude.
By referring to the drawings to the detailed description of exemplary embodiment of the present utility model, it is of the present utility model other
Feature and its advantage will be made apparent from.
Brief description of the drawings
The Description of Drawings embodiment of the present utility model of a part for specification is constituted, and is used together with the description
In explanation principle of the present utility model.
Fig. 1 is the Structure explosion diagram of the piezoelectric speaker that the utility model is provided；
Fig. 2 is the fragmentary side cross-sectional view of the piezoelectric speaker that a kind of implementation method of the present utility model is provided；
Fig. 3 is the fragmentary side cross-sectional view of the piezoelectric speaker that a kind of implementation method of the present utility model is provided.
Specific embodiment
Describe various exemplary embodiments of the present utility model in detail now with reference to accompanying drawing.It should be noted that：Unless another
Illustrate outward, the part and the positioned opposite of step, numerical expression and numerical value for otherwise illustrating in these embodiments are not limited
Make scope of the present utility model.
The description only actually at least one exemplary embodiment is illustrative below, never as to this practicality
New and its application or any limitation for using.
May be not discussed in detail for technology and equipment known to person of ordinary skill in the relevant, but in appropriate situation
Under, the technology and equipment should be considered as a part for specification.
In all examples shown here and discussion, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further discussed in subsequent accompanying drawing.
The utility model provides a kind of improved piezoelectric speaker, and biography vibration plate, piezoelectricity are provided with the piezoelectric speaker
The vibration that piece is produced can reach vibrating diaphragm by passing vibration plate, and passing vibration plate can increase amplitude and make vibration frequency more stable.Pass through
This structure design, can increase the amplitude of vibrating diaphragm, improve the acoustic pressure produced during diaphragm oscillations.
As shown in figure 1, the piezoelectric speaker includes passing vibration plate 1 and piezoelectric patches 2, the piezoelectric patches 2 is fixedly installed on institute
State on biography vibration plate 1, have on the biography vibration plate 1 and take off post 11, the biography vibration plate 1 is made by having resilient material, Ke Yichuan
Pass the vibration of the generation of piezoelectric patches 2.It is described take off post 11 from it is described biography vibration plate 1 surface stretch out, i.e., from pass vibration plate 1 protrude above
One segment distance.Preferably, to pass and take off post 11 positioned at the center of the piezoelectric patches 2 on vibration plate 1.Due to shaking for piezoelectric patches 2
It is dynamic to be bent and deformed generation, so, the deformation extent of the center of piezoelectric patches 2 is maximum.Positioned at the center of piezoelectric patches 2
Maximized amplitude 11 can be passed to vibrating diaphragm 3 by taking off post for position.
The piezoelectric speaker also includes vibrating diaphragm 3, circuit unit and housing 4.The vibrating diaphragm 3 and the piezoelectric patches 2 and biography
Vibration plate 1 be arranged in parallel, and described taking off post 11 is connected with the vibrating diaphragm 3.The circuit unit is electrically connected with the piezoelectric patches 2, is used
Conducted to the piezoelectric patches 2 in by outside voice signal.The housing 4 is used to carry the biography vibration plate 1, piezoelectric patches 2, vibrating diaphragm
3 and circuit unit.In the implementation method shown in Fig. 1,2, the edge for passing vibration plate 1 is fixed on the housing 4, described
The edge of vibrating diaphragm 3 is also secured on the housing 4, and the piezoelectric patches 2 is then overall to be attached on the lower surface of the biography vibration plate 1.Institute
State take off post 11 from it is described biography vibration plate 1 opposite side protrude upward and be connected with the vibrating diaphragm 3.Described in when the piezoelectric patches vibrates
Pass vibration plate together to vibrate, pass vibration plate by taking off post conduct vibrations to vibrating diaphragm.Can after oscillating plate and piezoelectric patches Elastic Coupling
Increase the amplitude of vibration, this structure can more effectively play the vibrational energy of piezoelectric patches, by piezoelectric patches high frequency in itself
Advantage, can also widen frequency range, and the high frequency performance of piezoelectric speaker is improved to a certain extent.
Preferably, the piezoelectric patches can be fixed on the biography vibration plate by the form being bonded, and the piezoelectric patches is attached
On a side surface of the biography vibration plate.As Figure 1-3, it is described to take off post in a kind of implementation method of the present utility model
11 are on two different surfaces of the biography vibration plate 1 respectively with the piezoelectric patches 2, so, 11 and the piezoelectricity of taking off post
Piece 2 will not influence each other.The utility model is not intended to limit the piezoelectric patches and must be fixed with vibration plate is passed by bonding, it is also possible to adopted
Otherwise it is attached.
Alternatively, in implementation method as shown in Figure 1,3, it is described take off post 11 can be along perpendicular to it is described biography shake
What the direction of plate 1 extended.This structure design is the vibration deformation feature that make use of piezoelectric patches, when piezoelectric patches vibration deformation,
It is maximum perpendicular to the direction Oscillation Amplitude of piezoelectric patches, piezoelectric patches is generally parallel with the biography vibration plate 1 or is directly attached to biography and shakes
On plate 1.In this case, vibration directly can be transmitted to vibrating diaphragm perpendicular to taking off post for biography vibration plate, transmits the efficiency of kinetic energy
It is highest.Certainly, in other embodiments, described taking off post can also be connected with other bearing of trends with the vibrating diaphragm,
The utility model is limited not to this.
Preferably, the rectangular laminated structure of the piezoelectric patches 2, the piezoelectric patches 2 of rectangle can preferably play its own
Deformability.Further, the shape for passing vibration plate 1 is consistent with the geomery of piezoelectric patches 2, and both match, so, institute
Stating biography vibration plate 1 can preferably transmit the vibration of the generation of piezoelectric patches 2.As this implementation method shown in Fig. 1, it is described to take off post
11 are located at the center for passing vibration plate 1 and piezoelectric patches 2.
It is further preferred that the vibrating diaphragm 3 can have center and ring area, the ring area is located at the center
Periphery, the ring area can deform, and area provides the rebound effect power of up-down vibration centered on being used for.Especially, in described
Heart district is consistent with the geomery of the piezoelectric patches, and both match.So, the center of vibration plate 1, piezoelectric patches 2 and vibrating diaphragm 3 is passed
The size shape of area three is basically identical, and the vibration characteristics of three is basically identical, can produce more preferable vibrating effect.
Especially, as Figure 1-3, there can also be composite bed 31 on the center, the composite bed 31 can be carried
The rigidity of center high, prevents vibrating diaphragm from polarizing, distorting.Preferably, it is described as shown in figure 3, in a kind of improved implementation method
Take off post 11 end can be fixedly connected with the composite bed 31, and so, the center of the vibrating diaphragm can be used as on the whole
Lower vibration, can preferably reduce polarization phenomena.The utility model be not intended to limit it is described take off post 11 how with the composite bed
31 connections, for example, the composite bed 31 can be arranged on the lower surface of the center, described taking off post 11 is glued with composite bed 31
Connect；Or, there is hollow out at the center, described taking off post 11 11 is fixedly connected with taking off post from hollow part.
Alternatively, the periphery for passing vibration plate 1 can be provided with fixed part 12, and the fixed part 12 is configured to and the shell
Body 4 is fixedly connected.Fixed part 12 is used to pass fixing assembling of the vibration plate in piezoelectric speaker, and plays the work erected and pass vibration plate
With.Especially, ring portion (not shown) can be set in the fixed part 12 and between passing vibration plate, and the ring portion is for being
The rebound effect power that vibration plate provides up-down vibration is passed, when piezoelectric patches vibrates, the biography vibration plate can shake in the fixed part
Dynamic, the edge for passing vibration plate is connected by ring portion with the fixed part.Biography vibration plate Oscillation Amplitude with ring portion is bigger, can
Diaphragm radiation is set to go out stronger acoustic pressure.
Alternatively, the biography vibration plate meets material and is made using with certain elasticity, thickness and rigid macromolecule, or
Person, it is also possible to be made of thin metal layer or plastic sheeting, the utility model is not limited to this.Those skilled in the art can be with
According to the performance requirement to piezoelectric speaker, the thickness and material for passing vibration plate is designed.
In addition, the circuit unit can include flexible PCB FPCB, as shown in Figure 1.The flexible PCB 51 is used
In electric signal is provided for piezoelectric patches 2, it is electrically connected with piezoelectric patches 2.Flexible PCB 51 has certain deformability, to piezoelectricity
The deformation effect of piece 2 is smaller.Alternatively, the flexible PCB can be fixedly connected on the biography vibration plate, or flexible electrical
Road plate can also some be fixed in fixation portions.The utility model tries one's best reduction flexible PCB to piezoelectric patches deformation
Influence.
The piezoelectric speaker that the utility model is provided has substantially thinning relative to traditional moving-coil speaker thickness, and weight
Measure small, component few.The reliability of this piezoelectric speaker is also higher, the performance with electromagnetism interference, water proof and dust proof.Further
Ground, passes vibration plate and takes off post by configuring, and can increase the acoustic pressure of loudspeaker generation, improves product sensitivity.Also can widen
Loudspeaker frequency band, improves high frequency performance.
Although being described in detail to some specific embodiments of the present utility model by example, this area
It is to be understood by the skilled artisans that above example is merely to illustrate, rather than in order to limit scope of the present utility model.This
Field it is to be understood by the skilled artisans that can be in the case where scope and spirit of the present utility model not be departed from, to above example
Modify.Scope of the present utility model is defined by the following claims.
Claims (10)
1. a kind of piezoelectric speaker, it is characterised in that including：
Vibration plate (1) and piezoelectric patches (2) are passed, the piezoelectric patches (2) is fixedly installed on biography vibration plate (1), biography vibration plate (1)
Above have and take off post (11), the described center of (11) positioned at the piezoelectric patches (2) that takes off post is described to take off post (11) from institute
State and stretch out in biography vibration plate (1)；
Vibrating diaphragm (3), the vibrating diaphragm (3) be arranged in parallel with the piezoelectric patches (2) and biography vibration plate (1), (11) and the institute of taking off post
State vibrating diaphragm (3) connection；
Circuit unit, the circuit unit is electrically connected with the piezoelectric patches (2)；
Housing (4), the housing (4) is configured to carry biography vibration plate (1), piezoelectric patches (2), vibrating diaphragm (3) and circuit unit.
2. piezoelectric speaker according to claim 1, it is characterised in that the piezoelectric patches (2) is attached to the biography vibration plate
(1) on a side surface, take off post (11) stretch out from another side surface of biography vibration plate (1).
3. piezoelectric speaker according to claim 1, it is characterised in that described take off post (11) shake along perpendicular to the biography
The direction of plate (1) extends.
4. piezoelectric speaker according to claim 1, it is characterised in that rectangular of the piezoelectric patches (2), the biography is shaken
Plate (1) matches with the geomery of the piezoelectric patches (2).
5. piezoelectric speaker according to claim 4, it is characterised in that the vibrating diaphragm (3) with center and ring area,
The ring area is located at the periphery of the center, and the center matches with the geomery of the piezoelectric patches (2), described
Take off post (11) be connected with the center.
6. piezoelectric speaker according to claim 5, it is characterised in that there is composite bed (31), institute on the center
The end of (11) of taking off post is stated to be fixedly connected with the composite bed (31).
7. piezoelectric speaker according to claim 1, it is characterised in that the periphery of the biography vibration plate (1) is provided with fixed part
(12), the fixed part (12) is configured to be fixedly connected with the housing (4).
8. piezoelectric speaker according to claim 7, it is characterised in that the fixed part (12) and biography vibration plate (1)
Between have ring portion.
9. piezoelectric speaker according to claim 1, it is characterised in that the circuit unit includes flexible PCB
(51), the flexible PCB (51) is fixedly connected with biography vibration plate (1), the flexible PCB (51) and the piezoelectric patches
(2) electrically connect.
10. piezoelectric speaker according to claim 1, it is characterised in that the material of the biography vibration plate (1) is metal, modeling
Material or polymer composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621281759.2U CN206302567U (en) | 2016-11-24 | 2016-11-24 | Piezoelectric speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621281759.2U CN206302567U (en) | 2016-11-24 | 2016-11-24 | Piezoelectric speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206302567U true CN206302567U (en) | 2017-07-04 |
Family
ID=59211655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621281759.2U Active CN206302567U (en) | 2016-11-24 | 2016-11-24 | Piezoelectric speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206302567U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021218841A1 (en) * | 2020-04-30 | 2021-11-04 | 维沃移动通信有限公司 | Speaker and electronic device |
| CN114067773A (en) * | 2020-07-31 | 2022-02-18 | 华为技术有限公司 | Piezoelectric electroacoustic device and electronic apparatus |
| WO2023051382A1 (en) * | 2021-09-29 | 2023-04-06 | 华为技术有限公司 | Headphones |
| WO2024099045A1 (en) * | 2022-11-08 | 2024-05-16 | 深圳市韶音科技有限公司 | Loudspeaker |
-
2016
- 2016-11-24 CN CN201621281759.2U patent/CN206302567U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021218841A1 (en) * | 2020-04-30 | 2021-11-04 | 维沃移动通信有限公司 | Speaker and electronic device |
| US11871200B2 (en) | 2020-04-30 | 2024-01-09 | Vivo Mobile Communication Co., Ltd. | Speaker and electronic device |
| CN114067773A (en) * | 2020-07-31 | 2022-02-18 | 华为技术有限公司 | Piezoelectric electroacoustic device and electronic apparatus |
| CN114067773B (en) * | 2020-07-31 | 2024-01-05 | 华为技术有限公司 | Piezoelectric electroacoustic device and electronic device |
| WO2023051382A1 (en) * | 2021-09-29 | 2023-04-06 | 华为技术有限公司 | Headphones |
| WO2024099045A1 (en) * | 2022-11-08 | 2024-05-16 | 深圳市韶音科技有限公司 | Loudspeaker |
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