CN204733379U - Piezoelectric buzzer, electro-acoustic conversion device and electronic equipment - Google Patents
Piezoelectric buzzer, electro-acoustic conversion device and electronic equipment Download PDFInfo
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- CN204733379U CN204733379U CN201520333175.4U CN201520333175U CN204733379U CN 204733379 U CN204733379 U CN 204733379U CN 201520333175 U CN201520333175 U CN 201520333175U CN 204733379 U CN204733379 U CN 204733379U
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Abstract
The utility model relates to a kind of piezoelectric buzzer and electronic equipment, comprises the piezoelectric patches and sheet metal that combine, and described piezoelectric patches is polygon.The utility model also relates to a kind of electro-acoustic conversion device and electronic equipment, comprises moving-coil type electroacoustic converting unit and described piezoelectric buzzer.Technique effect of the present utility model is, achieves the piezoelectric buzzer that a kind of acoustical behavior is good, changes into square by the piezoelectric patches in piezoelectric buzzer, while can effectively improving the sensitivity of high frequency, suitably improves product yield and quality; Piezoelectric buzzer and common moving-coil type electroacoustic conversion equipment are combined, is responded by the higher frequency of piezoelectric buzzer compensation vibration system, thus achieve a kind of electro-acoustic conversion device of ultrabroad band.
Description
Technical field
The utility model relates to piezoelectric buzzer, electro-acoustic conversion device and electronic equipment.
Background technology
Buzzer, as a kind of high frequency microphone device of integral structure, is widely used in the electronic products such as computer, alarm, printer, timer, vehicle electronics.Buzzer common at present mainly contains piezoelectric type and electromagnetic type two kinds, and piezoelectric buzzer generally includes the sheet metal and piezoelectric patches that combine, piezoelectric patches has usually the coat of metal used as electrode.
Piezoelectric buzzer makes simply because it has, features such as high frequency lamprophonia and there is greater advantage, but its low frequency tonequality is poor, still can not meet the user demand of consumer, there is following problem specifically: 1) conventional piezoelectric buzzer vibration generation source is circular piezoelectric sheet, because of the difference of the piezoelectric patches natural mode of vibration, high frequency FR curve is more uneven.2) the buzzer low frequency sensitivity of circular piezoelectric sheet is lower, and sounding effect is undesirable.3) circular piezoelectric sheet technique relative complex when shaping.4) circular piezoelectric sheet easily produces stress concentrate when making, and the yield of product is relatively low.
Common DYN dynamic receiver (Receiver) and loud speaker (Speaker), be below referred to as moving-coil type electroacoustic conversion equipment.No matter be applied to mobile phone or earphone, the higher frequency response curve of receiver just there will be quick drop at 6k-9kHz, the higher frequency response curve of loud speaker also there will be quick drop after tens KHz, and this is said high-frequency cut-off frequency namely.Due to the restriction of the materials and process of moving-coil electro-acoustic conversion device, high-frequency cut-off frequency is difficult to promote.Along with the application of 4G communication, require the electro-acoustic conversion device of ultrabroad band (super wideband), need high-frequency cut-off frequency can reach 16kHz and more than, and existing this moving-coil type electroacoustic conversion equipment has been difficult to reach requirement.
Utility model content
The purpose of this utility model is to provide the electro-acoustic conversion device of the good piezoelectric buzzer of acoustical behavior and ultrabroad band.
According to first aspect of the present utility model, provide a kind of piezoelectric buzzer, comprise the piezoelectric patches and sheet metal that combine, described piezoelectric patches is polygon.
Preferably, described piezoelectric buzzer is rectangle.
According to second aspect of the present utility model, provide a kind of electronic equipment, comprise foregoing piezoelectric buzzer.
According to the third aspect of the present utility model, provide a kind of electro-acoustic conversion device, comprise moving-coil type electroacoustic converting unit and piezoelectric buzzer as claimed in claim 1.
Preferably, described piezoelectric buzzer and described moving-coil type electroacoustic converting unit are rectangle.
Preferably, described piezoelectric buzzer and described moving-coil type electroacoustic converting unit stack placement.
Preferably, described piezoelectric buzzer and described moving-coil type electroacoustic converting unit placed side by side.
Preferably, described moving-coil type electroacoustic converting unit is moving coil receiver or coil-moving speaker.
According to the third aspect of the present utility model, provide a kind of electronic equipment, comprise foregoing electro-acoustic conversion device.
A technique effect of the present utility model is, achieves the piezoelectric buzzer that a kind of acoustical behavior is good, changes into square by the piezoelectric patches in piezoelectric buzzer, while can effectively improving the sensitivity of high frequency, suitably improves product yield and quality.
Another technique effect of the present utility model is, piezoelectric buzzer and common moving-coil type electroacoustic conversion equipment is combined, and is responded, thus achieve a kind of electro-acoustic conversion device of ultrabroad band by the higher frequency of piezoelectric buzzer compensation vibration system.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present utility model, further feature of the present utility model and advantage thereof will become clear.
Accompanying drawing explanation
In the description combined and the accompanying drawing forming a part for specification shows embodiment of the present utility model, and illustrate that one is used from and explains principle of the present utility model together with it.
Fig. 1 is the exploded perspective view of the utility model piezoelectric buzzer.
Fig. 2 is the vertical view of the utility model piezoelectric buzzer inside
Fig. 3 is the end view of the utility model piezoelectric buzzer inside.
Description of reference numerals
100 protecgulums, 200 bonnets, 300 pads, 1 sheet metal, 2 piezoelectric patches, 3 electrode layers.
Embodiment
Various exemplary embodiment of the present utility model is described in detail now with reference to accompanying drawing.It should be noted that: unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit scope of the present utility model.
Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the utility model and application or use.
The technology and equipment known for person of ordinary skill in the relevant may not discuss in detail, but in the appropriate case, described technology and equipment should be regarded as a part for specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
Shown in figure 1-3, piezoelectric buzzer comprises from top to bottom successively: protecgulum 100, piezoelectric patches 2, sheet metal 1, bonnet 200.
The piezoelectric patches 2 of sheet metal 1 and rectangle combines, and piezoelectric patches 2 is provided with electrode layer 3 and pad 300.Protecgulum 100 and bonnet 200 form the shell of collecting fixing metal sheet 1 and piezoelectric patches 2, and as can be seen from the figure, the piezoelectric buzzer of the present embodiment and sheet metal are also rectangular shape, and piezoelectric buzzer and sheet metal can also be other shape in other embodiments.
Preferably, piezoelectric patches is rectangle; In actual applications, for the ease of assembling, piezoelectric patches can also be other polygons such as pentagon.
The utility model also proposed a kind of electro-acoustic conversion device, comprises moving-coil type electroacoustic converting unit and has the piezoelectric buzzer of Rectangular piezoelectric sheet foregoing.For the ease of both cooperations, piezoelectric buzzer and moving-coil type electroacoustic converting unit are all arranged to rectangular shape, then piezoelectric buzzer and moving-coil type electroacoustic converting unit are stacked placement, so that assembling, save product space simultaneously.In other embodiments, piezoelectric buzzer and moving-coil type electroacoustic converting unit also can be placed side by side.Above-mentioned moving-coil type electroacoustic converting unit can be moving coil receiver or coil-moving speaker.
The resonance frequency of piezoelectric buzzer can at 1k-40kHz, and after resonance frequency and resonance frequency, volume is all very large, can be used for multiple warning equipment.
Select the piezoelectric buzzer of appropriate resonant frequency, allow moving-coil type electroacoustic converting unit and piezoelectric buzzer work simultaneously, can compensate the high frequency response of moving-coil type electroacoustic converting unit.Superposition frequency response after compensation can on 16kHz, and even arriving 40kHz has good performance.Different with the voltage of piezoelectric buzzer owing to leading to moving-coil receiver, both audio signal separately inputs.
The utility model also proposed a kind of electronic equipment, uses foregoing piezoelectric buzzer, or uses foregoing electro-acoustic conversion device.
The utility model changes the piezoelectric patches in piezoelectric buzzer into rectangle, effectively can improve the sensitivity of high frequency, suitably can also improve product yield and quality simultaneously, have following technique effect specifically:
1, the sensitivity response of low frequency can effectively be improved;
2, the FR curve of intermediate frequency can effectively be widened;
3, the flatness of medium-high frequency FR curve can effectively be improved;
4, can effectively and moving-coil electroacoustic converting unit assemble;
5, the moving-coil electroacoustic converting unit of the different purposes of plurality of specifications can be applied to;
6, the audition yield of product can effectively be improved;
7, effectively can improve the audition tonequality of product and improve the experience of consumer;
8, the yield issues of product can be improved, suitably reduce costs.
A technique effect of the present utility model is, achieves the piezoelectric buzzer that a kind of acoustical behavior is good, changes into square by the piezoelectric patches in piezoelectric buzzer, while can effectively improving the sensitivity of high frequency, suitably improves product yield and quality.
Another technique effect of the present utility model is, piezoelectric buzzer and common moving-coil type electroacoustic conversion equipment is combined, and is responded, thus achieve a kind of electro-acoustic conversion device of ultrabroad band by the higher frequency of piezoelectric buzzer compensation vibration system.
Although be described in detail specific embodiments more of the present utility model by example, it should be appreciated by those skilled in the art, above example is only to be described, instead of in order to limit scope of the present utility model.It should be appreciated by those skilled in the art, when not departing from scope and spirit of the present utility model, above embodiment can be modified.Scope of the present utility model is limited by claims.
Claims (10)
1. a piezoelectric buzzer, is characterized in that, comprises the piezoelectric patches and sheet metal that combine, and described piezoelectric patches is polygon.
2. piezoelectric buzzer according to claim 1, is characterized in that, described piezoelectric patches is rectangle.
3. piezoelectric buzzer according to claim 1, is characterized in that, described piezoelectric buzzer is rectangle.
4. an electronic equipment, is characterized in that, comprises the piezoelectric buzzer as described in any one of claim 1-3.
5. an electro-acoustic conversion device, is characterized in that, comprises moving-coil type electroacoustic converting unit and piezoelectric buzzer as claimed in claim 1.
6. electro-acoustic conversion device according to claim 5, is characterized in that, described piezoelectric buzzer and described moving-coil type electroacoustic converting unit are rectangle.
7. electro-acoustic conversion device according to claim 6, is characterized in that, described piezoelectric buzzer and described moving-coil type electroacoustic converting unit stack placement.
8. electro-acoustic conversion device according to claim 5, is characterized in that, described piezoelectric buzzer and described moving-coil type electroacoustic converting unit placed side by side.
9. electro-acoustic conversion device according to claim 5, is characterized in that, described moving-coil type electroacoustic converting unit is moving coil receiver or coil-moving speaker.
10. an electronic equipment, is characterized in that, comprises the electro-acoustic conversion device as described in any one of claim 5-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520333175.4U CN204733379U (en) | 2015-05-21 | 2015-05-21 | Piezoelectric buzzer, electro-acoustic conversion device and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520333175.4U CN204733379U (en) | 2015-05-21 | 2015-05-21 | Piezoelectric buzzer, electro-acoustic conversion device and electronic equipment |
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| CN204733379U true CN204733379U (en) | 2015-10-28 |
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| CN201520333175.4U Active CN204733379U (en) | 2015-05-21 | 2015-05-21 | Piezoelectric buzzer, electro-acoustic conversion device and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105959839A (en) * | 2016-06-30 | 2016-09-21 | 乐视控股（北京）有限公司 | Audio output device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105959839A (en) * | 2016-06-30 | 2016-09-21 | 乐视控股（北京）有限公司 | Audio output device and method |
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| GR01 | Patent grant | ||
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| 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. |