CN203747995U - Flat plate sound production device - Google Patents
Flat plate sound production device Download PDFInfo
- Publication number
- CN203747995U CN203747995U CN201420014958.1U CN201420014958U CN203747995U CN 203747995 U CN203747995 U CN 203747995U CN 201420014958 U CN201420014958 U CN 201420014958U CN 203747995 U CN203747995 U CN 203747995U
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- China
- Prior art keywords
- dull
- limiting section
- producing device
- oscillating plate
- piezoelectric vibrator
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- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
The utility model provides a flat plate sound production device comprising a cover plate provided with a through hole, a vibration plate which is accommodated and fixed in the through hole, a piezoelectric vibrator for driving the vibration plate and a connection element which is located in the flat plate sound production device for connecting the cover plate and the vibration plate. The periphery of the vibration plate is provided with a first position limiting portion which is recessed towards the piezoelectric vibrator. The cover plate is provided with a second position limiting portion which is extended towards the vibration plate. The second position limiting portion is located under the first position limiting portion and used to limit the displacement of the first position limiting portion. The flat plate sound production device provided in the utility model can be applied in various electronic equipment, not only the advantage of easy application can be realized, and but also the advantage of low application cost can be realized.
Description
[technical field]
The utility model relates to vibration sounding field, relates in particular to a kind of dull and stereotyped sound-producing device.
[background technology]
Along with the arrival in mobile Internet epoch, the quantity of Intelligent mobile equipment constantly rises.And among numerous mobile devices, mobile phone is common, the most portable mobile terminal device beyond doubt.At present, the function of mobile phone and various, one of them is the music function of high-quality, and loud speaker in mobile phone is one of necessary requirement realizing this high-quality music function.Current mobile phone on the market, generally adopt minisize electromagnetic loud speaker to realize the playing function of music, but the product structure complexity of this kind of structure, and take interior of mobile phone space, need certain height because of minisize electromagnetic loud speaker self simultaneously, thereby seriously limited the slimming development of the mobile terminals such as mobile phone.
Along with the development of social science and technology, utilize the mobile phone of dull and stereotyped vocal skill to start to occur, but this mobile phone is all generally the display screen sounding that utilizes mobile phone, because the material of mobile phone screen is more single, general is all frangible glass material, thickness can not arbitrarily regulate, cause the tonequality of the sound that screen sends to be difficult to promote, simultaneously, this technology is applied on screen to also more complicated, piezoelectric vibrator and screen need to be fixed, in the time of assembling, easily damage glass screen, cause the significantly raising of production cost, therefore restricted the development of current dull and stereotyped vocal skill.
So need to provide a kind of novel dull and stereotyped sound-producing device in order to address the above problem.
[utility model content]
The purpose of this utility model is to provide a kind of dull and stereotyped sound-producing device, and it has solved existing dull and stereotyped vocal skill and has utilized display screen to do oscillating plate, causes assembling difficulty, the high problem of the frangible production cost causing of glass screen.
The utility model is achieved through the following technical solutions: a kind of dull and stereotyped sound-producing device, it comprises the cover plate with through hole, accommodate the oscillating plate being fixed in through hole, being positioned at oscillating plate top drives the piezoelectric vibrator of described oscillating plate and is positioned at dull and stereotyped sound-producing device inside for connecting the connector of described cover plate and oscillating plate, the periphery of described oscillating plate is provided with to the first limiting section of piezoelectric vibrator direction depression, described cover plate is provided with the second limiting section extending to oscillating plate direction, described the second limiting section is positioned at the below of the first limiting section and limits the displacement of the first limiting section.
Preferably, between described the first limiting section and the second limiting section, be provided with soft elastic material.
Preferably, described soft elastic material is the one in foam and silicon rubber.
Preferably, described connector comprises the inward flange being attached on oscillating plate, is attached at the outward flange on cover plate and connects inward flange and outer peripheral connecting portion.
Preferably, described cover plate is also provided with away from oscillating plate, the protuberance, described inward flange and the first limiting section butt, described outward flange and the protuberance butt that protrude to piezoelectric vibrator direction from cover inner surface.
Preferably, the upper surface of described the first limiting section and the upper surface of protuberance are in same plane, and described inward flange is connected with the first limiting section, and described outward flange is connected with protuberance.
Preferably, described connecting portion is the arcuate structure protruding to piezoelectric vibrator direction.
Preferably, described connector is the one in PET film, PU composite membrane, PEEK composite membrane.
Preferably, described oscillating plate is provided with to piezoelectric vibrator direction and protrudes and be connected to the boss for transmission vibration energy on piezoelectric vibrator.
Preferably, described outward flange and described protuberance adopt glue bonding, and described inward flange and described the first limiting section are bonding with glue.
The utility model provides a kind of dull and stereotyped sound-producing device, and it can be applied in various electronic equipments, not only easily application, and also application cost is cheap.
[brief description of the drawings]
Fig. 1 is the exploded view that the utility model embodiment applies the cell phone rear cover of dull and stereotyped sound-producing device;
Fig. 2 is the cell phone rear cover constitutional diagram that the utility model embodiment applies dull and stereotyped sound-producing device;
Fig. 3 is the cutaway view of cell phone rear cover shown in Fig. 2;
Fig. 4 is the enlarged drawing of the local A of cutaway view shown in Fig. 3.
[embodiment]
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only a part of embodiment of the utility model, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As depicted in figs. 1 and 2, a kind of dull and stereotyped sound-producing device 100, comprises piezoelectric vibrator 2 and the oscillating plate 3 of cover plate 1, strip.In the present embodiment, cover plate 1 and the common composition cell phone rear cover of oscillating plate 3, in selectable other execution modes, also can be used as a part for cell phone rear cover.
Described cover plate 1 is provided with through hole 10, described dull and stereotyped sound-producing device 100 comprises that part is contained in described through hole 10 and can be driven with vibrative oscillating plate 3 and connector 4 for being connected described oscillating plate 3 and cover plate 1 by described piezoelectric vibrator 2, the vertical described oscillating plate 3 of direction of vibration of described piezoelectric vibrator 2, described piezoelectric vibrator 2 is positioned at described oscillating plate 3 tops, it is provided with two ends on long axis direction, cover plate 1 is fixed in described two ends, and described cover plate 1 is around described oscillating plate 3.The periphery of described oscillating plate 3 is provided with to the first limiting section 33 of piezoelectric vibrator 2 direction depressions, described cover plate 1 is provided with the second limiting section 11 extending to piezoelectric vibrator 2 directions, and described the second limiting section 11 is positioned at the below of the first limiting section 33 and limits the displacement of the first limiting section 33.Because described the first limiting section 33 is positioned at the top of the second limiting section 11, i.e. the inside of more close dull and stereotyped sound-producing device, can play spacing fixing between oscillating plate 3 and cover plate 1.Like this, can prevent that in use oscillating plate is subject to external impacts or glue inefficacy and departs from from bonnet, cause damage.More excellent, between described the first limiting section 33 and the second limiting section 11, be provided with one deck soft elastic material 5, for preventing that cover plate and oscillating plate from producing noise because of contact-impact.In the present embodiment, described soft elastic material 5 is foam or silica gel.
Described piezoelectric vibrator 2 also comprises sheet metal 20 and is attached at the piezoelectric patches of being made up of piezoceramic material 21 on sheet metal 20, described sheet metal 20 piezoelectric patches 21 that both can both sides be all sticked, also only a side is provided with piezoelectric patches 21, in the present embodiment, is the both sides piezoelectric patches that has all been sticked.In the present embodiment, this cell phone rear cover has two piezoelectric vibrators 2 parallel and separated by a distance.
In conjunction with shown in Fig. 3 and Fig. 4, in the present embodiment, the through hole 10 of described oscillating plate 3 and cover plate 1 is circular again, and described connector 4 is circulus.Concrete, connector 4 comprises the inward flange 41 that is attached at the ring-type on oscillating plate 3, is positioned at the edge of through hole 10 and is attached at the outward flange 42 of the ring-type on cover plate 1, and connect the connecting portion 43 of inward flange 41 and outward flange 42.Described connecting portion 43 is to the outstanding arcuate structure of piezoelectric vibrator 2 directions from outward flange 42 and inward flange 41.
Described cover plate 1 is also provided with the protuberance 12 away from oscillating plate 3, and described protuberance 12 is for protruding and form to piezoelectric vibrator 2 directions from cover inner surface.In the present embodiment, described protuberance 12 is connected with described the second limiting section 11, in selectable other execution modes, also can and the second limiting section 11 between there is certain distance.In the present embodiment, the upper surface of the upper surface of described the first limiting section 33 and protuberance 12 is positioned at same plane.Described inward flange 41 is attached on the first limiting section 33, and outward flange 42 is attached on the protuberance 12 of cover plate 1.It should be noted that, described protuberance 12 can be circulus, can be also multiple independently boss, as long as realizing the fixing of connector 4, can implement.
Because protuberance 12 and the first limiting section 33 protrude from the inner surface of cover plate, like this, can ensure enough oscillation spaces and ensure Machinability Evaluation.
Connector 4 adopts plastic material to make, concrete, is a kind of or combination in PET film, PU composite membrane, PEEK composite membrane.Due to the setting of connecting portion 43, can greatly reduce the rigidity of connector 4, thereby reduce f0, improve Oscillation Amplitude.Oscillating plate 3 and cover plate 1 are bonding with connector 4 use glue respectively, and described outward flange 42 is bonding with cover plate 1, and described inward flange 41 is bonding with oscillating plate 3.Because the width of cambered surface is greater than the distance between cover plate and oscillating plate, oscillating plate 3 is not bonding with cover plate 1 close part, like this, can give the larger vibrational degrees of freedom of oscillating plate, greatly reduces the rigidity of connector, thereby further improves f0.
Oscillating plate 3 is provided with to piezoelectric vibrator 2 directions and protrudes and be connected to the boss 31 on piezoelectric vibrator 2, and the some limiting sections 32 that protrude to piezoelectric vibrator 2 directions.Described boss 31, for transmission vibration energy, makes oscillating plate vibrate with piezoelectric vibrator; Described limiting section 32 can constrained vibration plate displacement upwards, thereby prevents tearing of connector 4 and tearing of piezoelectric patches 21.At the correspondence position of interior of mobile phone, guide vane end stop (not shown) can be set, thereby jointly play the effect of constrained vibration plate 3 displacements, because the largest deformation amount of connector 4 and piezoelectric patches 21 can not exceed 0.3mm, therefore, interval between limiting section 31 and guide vane end stop is no more than 0.3mm, more excellent, in any one of the guide vane end stop in limiting section 31 or the mobile phone of dull and stereotyped sound-producing device, being provided with one deck padded coaming, this padded coaming can be foam or rubber.
The dull and stereotyped sound-producing device that the utility model provides, it not only can be applied on cell phone rear cover, can also be applied in other various electronic equipments, because the sheathing material material unlike glass display screen as cell phone rear cover and so on is single frangible, it can adopt different materials to make bonnet as required, especially the dull and stereotyped sound-producing device that the utility model provides, oscillating plate 3 is for vibration, oscillating plate 3 arranges with cover plate 1 interval, therefore, in fact only need to change oscillating plate 3 and just can regulate the tonequality of sent sound, therefore, the dull and stereotyped sound-producing device that the utility model provides is not only easily employed, and application cost is cheap.
Above-described is only preferred embodiments of the present utility model; it should be pointed out that for the person of ordinary skill of the art at this, do not departing under the prerequisite of the utility model creation design; can also make improvement, but these all belong to protection range of the present utility model.
Claims (10)
1. a dull and stereotyped sound-producing device, it comprises that cover plate, the part with through hole accommodate the oscillating plate that is fixed in through hole, drive the piezoelectric vibrator of described oscillating plate and be positioned at dull and stereotyped sound-producing device inside for connecting the connector of described cover plate and oscillating plate, it is characterized in that: the periphery of described oscillating plate is provided with to the first limiting section of piezoelectric vibrator direction depression, described cover plate is provided with the second limiting section extending to oscillating plate direction, and described the second limiting section is positioned at the below of the first limiting section and limits the displacement of the first limiting section.
2. dull and stereotyped sound-producing device according to claim 1, is characterized in that: between described the first limiting section and the second limiting section, be provided with soft elastic material.
3. dull and stereotyped sound-producing device according to claim 2, is characterized in that: described soft elastic material is the one in foam and silicon rubber.
4. dull and stereotyped sound-producing device according to claim 1, is characterized in that: described connector is hollow annular structure, and it comprises the inward flange being attached on oscillating plate, is attached at the outward flange on cover plate and connects inward flange and outer peripheral connecting portion.
5. dull and stereotyped sound-producing device according to claim 4, is characterized in that: described connecting portion is the arcuate structure protruding to piezoelectric vibrator direction.
6. dull and stereotyped sound-producing device according to claim 5, is characterized in that: described cover plate is also provided with the protuberance, described inward flange and the first limiting section butt, described outward flange and the protuberance butt that protrude to piezoelectric vibrator direction from cover inner surface.
7. dull and stereotyped sound-producing device according to claim 6, is characterized in that: the upper surface of described the first limiting section and the upper surface of protuberance are in same plane.
8. dull and stereotyped sound-producing device according to claim 7, is characterized in that: described outward flange and described protuberance adopt glue bonding, and described inward flange and described the first limiting section are bonding with glue.
9. dull and stereotyped sound-producing device according to claim 8, is characterized in that: described connector is the one in PET film, PU composite membrane, PEEK composite membrane.
10. dull and stereotyped sound-producing device according to claim 9, is characterized in that: described oscillating plate is provided with to piezoelectric vibrator direction and protrudes and be connected to the boss for transmission vibration energy on piezoelectric vibrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014958.1U CN203747995U (en) | 2014-01-10 | 2014-01-10 | Flat plate sound production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014958.1U CN203747995U (en) | 2014-01-10 | 2014-01-10 | Flat plate sound production device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203747995U true CN203747995U (en) | 2014-07-30 |
Family
ID=51347742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420014958.1U Expired - Fee Related CN203747995U (en) | 2014-01-10 | 2014-01-10 | Flat plate sound production device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203747995U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109032556A (en) * | 2018-07-09 | 2018-12-18 | Oppo广东移动通信有限公司 | Sounding control method, device, electronic device and storage medium |
| CN110930876A (en) * | 2018-09-20 | 2020-03-27 | 乐金显示有限公司 | Display device and computing device including the same |
-
2014
- 2014-01-10 CN CN201420014958.1U patent/CN203747995U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109032556A (en) * | 2018-07-09 | 2018-12-18 | Oppo广东移动通信有限公司 | Sounding control method, device, electronic device and storage medium |
| CN109032556B (en) * | 2018-07-09 | 2021-08-17 | Oppo广东移动通信有限公司 | Sound production control method, sound production control device, electronic device, and storage medium |
| CN110930876A (en) * | 2018-09-20 | 2020-03-27 | 乐金显示有限公司 | Display device and computing device including the same |
| US11223896B2 (en) | 2018-09-20 | 2022-01-11 | Lg Display Co., Ltd. | Display apparatus and computing apparatus including the same |
| CN115064082A (en) * | 2018-09-20 | 2022-09-16 | 乐金显示有限公司 | Display device and computing device including the same |
| US11665467B2 (en) | 2018-09-20 | 2023-05-30 | Lg Display Co., Ltd. | Display apparatus and computing apparatus including the same |
| CN115064082B (en) * | 2018-09-20 | 2024-02-06 | 乐金显示有限公司 | Display device and computing device including the same |
| US12028676B2 (en) | 2018-09-20 | 2024-07-02 | Lg Display Co., Ltd. | Vibration apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170407 Address after: Singapore Ang Mo Kio 65 Street No. 10 techpoint Building 1 floor, No. 8 Patentee after: AAC Technologies (Singapore) Co., Ltd. Patentee after: ACC Technology (Shenzhen) Inc. Patentee after: Changzhou Meiou Electronics Co., Ltd. Address before: 210093 Gulou District, Qingdao, Jiangsu,, Nanjing University, Drum Tower, University of science and Technology Park, No. 32, entrepreneurship center, No. 401 Patentee before: ACC Technology (Shenzhen) Inc. Patentee before: AAC Acoustic Technologies (Shenzhen) Co., Ltd. Patentee before: Changzhou Meiou Electronics Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20210110 |
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| CF01 | Termination of patent right due to non-payment of annual fee |