CN204291388U - A kind of piezoelectric vibration loud speaker - Google Patents
A kind of piezoelectric vibration loud speaker Download PDFInfo
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- CN204291388U CN204291388U CN201520004002.8U CN201520004002U CN204291388U CN 204291388 U CN204291388 U CN 204291388U CN 201520004002 U CN201520004002 U CN 201520004002U CN 204291388 U CN204291388 U CN 204291388U
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- framework
- vibrating diaphragm
- loud speaker
- piezoelectric vibration
- piezoelectric
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- Piezo-Electric Transducers For Audible Bands (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Telephone Set Structure (AREA)
Abstract
The utility model discloses a kind of piezoelectric vibration loud speaker, comprise the first framework, be fixed with the first vibrating diaphragm in the upper end of described first framework, be fixed with the second vibrating diaphragm in the lower end of described first framework; First vibrating diaphragm, the first framework, the second vibrating diaphragm define airtight space; Wherein, the end face of described first vibrating diaphragm is fixed with piezoelectric patches, is fixed with balancing weight in the lower end of described second vibrating diaphragm.Piezoelectric vibration loud speaker of the present utility model, utilizes the inverse piezoelectric effect of piezoelectric patches the function i ntegration of loud speaker and vibrating motor, reduces the number of mobile phone components and parts, also save the space of components and parts inside, be beneficial to the lightening development of mobile phone.It can be applied to mobile phone, also can be applied to Intelligent bracelet, is placed on wrist pulse place.
Description
Technical field
The utility model belongs to field of acoustics, more precisely, relates to a kind of loud speaker, particularly relates to a kind of piezoelectric vibration loud speaker.
Background technology
In the products such as mobile communication terminal such as mobile phone, call prompting way has auditory tone cues and vibration prompt two kinds, and in prior art, these two functions are born by loud speaker and vibrating motor respectively.But along with the development of technology, mobile phone volume constantly reduces, and thickness is constantly thinning, therefore, the components and parts of composition mobile phone and the volume of spare and accessory parts are also more and more microminiaturized, and components and parts and spare and accessory parts also need to carry out integrated their numbers that makes and reduce.
Traditional MFD, loud speaker and motor integrated, highly general at about 5mm, be not suitable with the theory of present mobile phone ultrathin design.Piezoelectric speaker and piezoelectric vibration motor are compared with traditional electro-acoustic element, because it has the advantages such as light, thin, waterproof, are able to be promoted fast in electroacoustic field.
Utility model content
In order to solve problems of the prior art, the utility model provides the simple piezoelectric vibration loud speaker of a kind of structure.
In order to realize above-mentioned object, the technical solution of the utility model is: a kind of piezoelectric vibration loud speaker, comprises the first framework, is fixed with the first vibrating diaphragm in the upper end of described first framework, is fixed with the second vibrating diaphragm in the lower end of described first framework; First vibrating diaphragm, the first framework, the second vibrating diaphragm define a confined space; Wherein, the end face of described first vibrating diaphragm is fixed with piezoelectric patches, is fixed with balancing weight in the lower end of described second vibrating diaphragm.
Preferably, described first framework is plastic material.
Preferably, described first framework is metal material, and wherein, described first vibrating diaphragm is connected with the first framework by plastic pad.
Preferably, the upper end of film is provided with the second framework, and the upper end of described second framework is provided with the end cap for the protection of the first vibrating diaphragm, described end cap is provided with the passage flowed out for sound.
Preferably, described first framework and the second framework is measure-alike.
Preferably, also comprise the FPC wiring board for being electrically connected piezoelectric patches, described second framework leave the breach penetrated for FPC wiring board.
Preferably, described passage is the breach being arranged on end cap sidewalls.
Preferably, described passage is the multiple densely covered acoustic aperture be arranged on end cap end face.
Preferably, described second framework is plastic material.
Preferably, described second framework is metal material, wherein, is provided with plastic pad between described first vibrating diaphragm and the second framework.
Piezoelectric vibration loud speaker of the present utility model, utilizes the inverse piezoelectric effect of piezoelectric patches the function i ntegration of loud speaker and vibrating motor, reduces the number of mobile phone components and parts, also save the space of components and parts inside, be beneficial to the lightening development of mobile phone.It can be applied to mobile phone, also can be applied to Intelligent bracelet, is placed on wrist pulse place.
Accompanying drawing explanation
Fig. 1 shows the profile of the utility model piezoelectric vibration loud speaker.
Fig. 2 shows the explosive view of Fig. 1.
Fig. 3 shows the profile of the another kind of execution mode of the utility model piezoelectric vibration loud speaker.
Fig. 4 shows the explosive view of Fig. 3.
Embodiment
The technical problem solved to make the utility model, the technical scheme of employing, the technique effect easy to understand obtained, below in conjunction with concrete accompanying drawing, be described further embodiment of the present utility model.
Fig. 1 shows the profile of the utility model piezoelectric vibration loud speaker, and this piezoelectric vibration loud speaker comprises the first framework 9, and this first framework 9 can be rectangular box, also can be circular framework or annulus, according to the shape unrestricted choice of piezoelectric vibration loud speaker.The first vibrating diaphragm 4 is fixed with in the upper end of described first framework 9, first vibrating diaphragm 4 is fixed on the upper end of the first framework 9 by adhesive or double faced adhesive tape, that is, the edge of the first vibrating diaphragm 4 is fixed on the edge of the first framework 9, makes on the first vibrating diaphragm 4 except the position fixing with the first framework 9 is all in unsettled state.
The second vibrating diaphragm 5 is fixed with in the lower end of the first framework 9, fixed form between second vibrating diaphragm 5 with the first framework 9 can be identical with the first vibrating diaphragm 4, mode all by adhesive or double faced adhesive tape is fixed, the edge of the second vibrating diaphragm 5 is fixed on the edge of the first framework 9, makes the second vibrating diaphragm 5 all be in unsettled state except the position fixing with the first framework 9.By the first vibrating diaphragm 4, second vibrating diaphragm 5 by the closed at both ends of the first framework 9, finally, described first vibrating diaphragm 4, first framework 9, second vibrating diaphragm 5 defines a confined space 7.
Be fixed with piezoelectric patches 3 at the end face (unsettled position) of described first vibrating diaphragm 4, in a specific embodiment of the present utility model, piezoelectric patches 3 is fixed on the upper surface of the first vibrating diaphragm 4, makes piezoelectric patches 3 that the first vibrating diaphragm 4 can be driven to vibrate.Be fixed with balancing weight 6 in described second vibrating diaphragm 5 lower end, make under external force, balancing weight 6 vibrates on the second vibrating diaphragm 5.
Piezoelectric vibration loud speaker of the present utility model, first vibrating diaphragm 4, piezoelectric patches 3 constitute sounding module, and the second vibrating diaphragm 5, balancing weight 6 constitute motor module, the material of the first vibrating diaphragm 4, second vibrating diaphragm 5 can be identical, due to the existence of balancing weight 6, make the resonance frequency of sounding module different from the resonance frequency of motor module, that is the resonance frequency of motor module is well below the resonance frequency of sounding module.The resonance frequency of such as motor module can be between 100-200Hz, and the resonance frequency of sounding module can at more than 800Hz.Can distinguish with the value changed in certain fixed value or a certain frequency range according to actual needs.
With reference to figure 2, piezoelectric vibration loud speaker of the present utility model also comprises FPC wiring board 10, links together with piezoelectric patches 3, by FPC wiring board 10 input signal.When input current signal is to piezoelectric patches 3, impel piezoelectric patches 3 to produce inverse piezoelectric effect, generation is vibrated by piezoelectric patches 3.
Piezoelectric vibration loud speaker of the present utility model, when inputting low-frequency current signal, piezoelectric patches 3 drives the first vibrating diaphragm 4 to vibrate, due to, the frequency that the first vibrating diaphragm 4 vibrates is lower, makes sounding module sound not obvious.First vibrating diaphragm 4 is while vibration, and compress the air in confined space 7, air drives balancing weight 7 and the second vibrating diaphragm 5 to vibrate again, due to the reason of balancing weight 7, make the amplitude of motor module comparatively large, this piezoelectric vibration loud speaker entirety is presented as mechanical oscillation, realizes the vibrating function of motor.Particularly when the frequency of input signal is near the resonance frequency of the second vibrating diaphragm 5 and balancing weight 6, now the first vibrating diaphragm 4 compressed air is violent, makes the vibration sense of motor module obvious.
When inputting high-frequency current signal, the vibration of motor module is not obvious, and obviously, piezoelectric patches 3 drives the first vibrating diaphragm 4 to vibrate to the vibration of sounding module, makes this piezoelectric vibration loud speaker entirety be presented as sounding, realizes the function of the sounding of loud speaker.
Piezoelectric vibration loud speaker of the present utility model, utilizes the inverse piezoelectric effect of piezoelectric patches the function i ntegration of loud speaker and vibrating motor, reduces the number of mobile phone components and parts, also save the space of components and parts inside, be beneficial to the lightening development of mobile phone.It can be applied to mobile phone, also can be applied to Intelligent bracelet, is placed on wrist pulse place.
In a concrete execution mode of the present utility model; the top of described first vibrating diaphragm 4 is also provided with end cap 2; be used for protection first vibrating diaphragm 4; particularly; the upper end of described first vibrating diaphragm 4 is provided with the second framework 1; the upper end of described second framework 1 is provided with end cap 2, described end cap 2 is provided with the passage 11 flowed out for sound.This first framework 9 is preferably identical with the apparent size of the second framework 1, and the first vibrating diaphragm 4 is clamped by the first framework 9, second framework 1, the firm connection of the first vibrating diaphragm 4.
Wherein, the first framework 9, second framework 1 all can adopt plastic material.Volume based on this voltage fluctuation loud speaker is very little, in order to ensure the intensity of the first framework 9, second framework 1, described first framework 9, second framework 1 preferably adopts metal material, now, plastic pad 8 is provided with between the first vibrating diaphragm 4 and the first framework 9 and/or between the first vibrating diaphragm 4 and the second framework 1.Realize the connection between the first vibrating diaphragm 4 and metal material by plastic pad 8, such structural design can reduce the resonance frequency of the first vibrating diaphragm 4, ensure that the vibration characteristics that the first vibrating diaphragm 4 is good.
For the ease of installing FPC wiring board 10, described second framework 1 leave the breach penetrated for FPC wiring board 10, that is this second framework 1 is nonocclusive, and FPC wiring board 10 links together through this breach and piezoelectric patches 3.
Piezoelectric vibration loud speaker of the present utility model, can adopt the mode spoken in side, also can adopt the mode spoken in front.Such as Fig. 1, the passage 11 that sound flows out is for being arranged on the breach of end cap 2 sidewall.Now, the sound that the first vibrating diaphragm 4 sends flows out from the sidewall of end cap 2.Fig. 3, Fig. 4 give the mode that another kind is spoken, and now, the passage 11 that sound flows out is for being arranged on the multiple densely covered acoustic aperture on end cap 2 end face, and the sound that the first vibrating diaphragm 4 sends flows out from the front of end cap.
The utility model is by preferred embodiment having carried out detailed explanation.But, by studying carefully above, concerning the change of each execution mode with to increase be apparent for one of ordinary skill in the art.Being intended that these changes all and increasing of applicant has all dropped in scope that the utility model claim protects.
Claims (10)
1. a piezoelectric vibration loud speaker, it is characterized in that, comprise the first framework (9), be fixed with the first vibrating diaphragm (4) in the upper end of described first framework (9), be fixed with the second vibrating diaphragm (5) in the lower end of described first framework (9); Described first vibrating diaphragm (4), the first framework (9), the second vibrating diaphragm (5) define a confined space (7); Wherein, the end face of described first vibrating diaphragm (4) is fixed with piezoelectric patches (3), is fixed with balancing weight (6) in the lower end of described second vibrating diaphragm (5).
2. piezoelectric vibration loud speaker according to claim 1, is characterized in that: described first framework (9) is plastic material.
3. piezoelectric vibration loud speaker according to claim 1, it is characterized in that: described first framework (9) is metal material, wherein, described first vibrating diaphragm (4) is connected with the first framework (9) by plastic pad (8).
4. piezoelectric vibration loud speaker according to claim 1; it is characterized in that: the upper end of described first vibrating diaphragm (4) is provided with the second framework (1); the upper end of described second framework (1) is provided with the end cap (2) for the protection of the first vibrating diaphragm (4), described end cap (2) is provided with the passage (11) flowed out for sound.
5. piezoelectric vibration loud speaker according to claim 4, is characterized in that: described first framework (9) and the second framework (1) measure-alike.
6. piezoelectric vibration loud speaker according to claim 4, it is characterized in that: also comprise the FPC wiring board (10) for being electrically connected piezoelectric patches (3), leaving for FPC wiring board (10) breach that penetrates of described second framework (1).
7. piezoelectric vibration loud speaker according to claim 4, is characterized in that: described passage (11) is for being arranged on the breach of end cap (2) sidewall.
8. piezoelectric vibration loud speaker according to claim 4, is characterized in that: described passage (11) is for being arranged on the multiple densely covered acoustic aperture on end cap (2) end face.
9. piezoelectric vibration loud speaker according to claim 4, is characterized in that: described second framework (1) is plastic material.
10. piezoelectric vibration loud speaker according to claim 4, it is characterized in that: described second framework (1) is metal material, wherein, plastic pad (8) is provided with between described first vibrating diaphragm (4) and the second framework (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520004002.8U CN204291388U (en) | 2015-01-04 | 2015-01-04 | A kind of piezoelectric vibration loud speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520004002.8U CN204291388U (en) | 2015-01-04 | 2015-01-04 | A kind of piezoelectric vibration loud speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204291388U true CN204291388U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520004002.8U Expired - Fee Related CN204291388U (en) | 2015-01-04 | 2015-01-04 | A kind of piezoelectric vibration loud speaker |
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| Country | Link |
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| CN (1) | CN204291388U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650599A (en) * | 2018-04-28 | 2018-10-12 | 维沃移动通信有限公司 | A kind of motor and mobile terminal |
| CN110505557A (en) * | 2019-07-18 | 2019-11-26 | 维沃移动通信有限公司 | A kind of loudspeaker and terminal device |
| CN113055794A (en) * | 2019-12-28 | 2021-06-29 | 华为技术有限公司 | Loudspeaker inner core, loudspeaker module and electronic equipment |
-
2015
- 2015-01-04 CN CN201520004002.8U patent/CN204291388U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650599A (en) * | 2018-04-28 | 2018-10-12 | 维沃移动通信有限公司 | A kind of motor and mobile terminal |
| CN110505557A (en) * | 2019-07-18 | 2019-11-26 | 维沃移动通信有限公司 | A kind of loudspeaker and terminal device |
| CN113055794A (en) * | 2019-12-28 | 2021-06-29 | 华为技术有限公司 | Loudspeaker inner core, loudspeaker module and electronic equipment |
| CN113055794B (en) * | 2019-12-28 | 2022-12-02 | 华为技术有限公司 | Loudspeaker inner core, loudspeaker module and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
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| 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 Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20200104 |