CN103067839A - Piezoelectric loudspeaker - Google Patents
Piezoelectric loudspeaker Download PDFInfo
- Publication number
- CN103067839A CN103067839A CN2012105580095A CN201210558009A CN103067839A CN 103067839 A CN103067839 A CN 103067839A CN 2012105580095 A CN2012105580095 A CN 2012105580095A CN 201210558009 A CN201210558009 A CN 201210558009A CN 103067839 A CN103067839 A CN 103067839A
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- piezoelectric
- strutting piece
- vibrating diaphragm
- piezoelectric speaker
- shell
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Abstract
The invention discloses a piezoelectric loudspeaker which comprises a shell which forms an external frame of the piezoelectric loudspeaker, and a sound production hole is formed on the shell. The piezoelectric loudspeaker further comprises a sound production part, a transmission part and a vibration part. The sound production part comprises a vibrating diaphragm arranged corresponding to the sound production hole; the transmission part comprises a support and a transmission plate, and the vibrating diaphragm, the transmission plate and the support are sequentially combined, wherein the transmission plate is combined with one side of the vibrating diaphragm in an airtight mode, and the one side of the vibrating diaphragm is away from the sound production hole; the vibration part comprises piezoelectric pieces and a plurality of supporting pieces, wherein the piezoelectric pieces are used for electrically connecting an external circuit, the plurality of supporting pieces are independently arranged, and the piezoelectric pieces are correspondingly arranged on the supporting pieces; and the supporting pieces are arranged inside the shell in a hanging mode, one ends of the supporting pieces are fixed on the shell, and the other ends of the supporting pieces are fixed on the support. The piezoelectric loudspeaker has the advantages of being good in acoustic performance.
Description
Technical field
The present invention relates to the loud speaker field, especially relate to a kind of piezoelectric speaker.
Background technology
In the consumer electronics products such as electronic product, household appliances, loud speaker is widely used.Along with the development of science and technology, consumer electronics product is more and more perfect, and people are more and more higher to its shape requirement, and its thickness is more and more less, and is simultaneously, also more and more higher to the requirement of miniaturization, slimming and the sound performance of speaker unit.
Piezoelectric speaker is compared with the conventional loudspeakers device, simple structure, and volume is little, and cost is low, and electro-acoustic conversion efficiency is high.But present piezoelectric speaker exists LF-response poor, and sound is the defective such as unmelodious sharply, is difficult to satisfy people to the requirement of acoustical behavior.
Therefore, be necessary to provide a kind of improvement, the defective that exists to overcome present piezoelectric speaker.
Summary of the invention
Technical problem to be solved by this invention provides the good piezoelectric speaker of a kind of acoustical behavior.
To achieve these goals, the present invention by the following technical solutions: a kind of piezoelectric speaker comprises: shell, form the external frame of described piezoelectric speaker, be provided with phonate hole at described shell; And: also comprise audible segment, described audible segment comprises the vibrating diaphragm that corresponding described phonate hole arranges; Running part, described running part comprise that support reaches and the driver plate of described vibrating diaphragm away from the airtight combination of described phonate hole one side, described vibrating diaphragm, driver plate and the successively combination of described support; Oscillating component comprises the piezoelectric patches and a plurality of independent strutting piece that arranges that are electrically connected external circuit, and described piezoelectric patches correspondence is arranged on the described strutting piece; The inside that is hung on described shell of described strutting piece, one end are fixed on the described shell, and the other end is fixed on the described support.
As a kind of preferred technical scheme, be provided with arrangements of electric connection between described piezoelectric patches and the described external circuit; Described strutting piece is sheet metal, and described arrangements of electric connection and described sheet metal form respectively two electrodes of described piezoelectric patches.
As a kind of preferred technical scheme, described arrangements of electric connection is flexible circuit board.
As a kind of preferred technical scheme, described vibrating diaphragm comprises pars intermedia and edge part; Described driver plate is corresponding is combined with the pars intermedia of described vibrating diaphragm.
As a kind of preferred technical scheme, described piezoelectric speaker is square structure.
As a kind of preferred technical scheme, described strutting piece extends towards the driver plate body interior, and described piezoelectric patches correspondence is arranged on the described strutting piece, and the end of described strutting piece and described support are fixed.
Piezoelectric speaker of the present invention, a plurality of independent support part homogeneous ends are fixed on the shell, the other end is connected with described support, adopt a plurality of independent support parts to be connected with support, having transmitted better piezoelectric patches is subjected to external voltage to change the vibration that produces, can effectively regulate the resonance frequency of speaker unit, improve the speaker unit acoustical behavior.
Description of drawings
Fig. 1 is the explosive view of piezoelectric speaker of the present invention.
Fig. 2 is piezoelectric speaker cutaway view of the present invention.
Fig. 3 is the improvement project schematic diagram of piezoelectric speaker of the present invention.
Embodiment
Below in conjunction with accompanying drawing, describe piezoelectric speaker concrete structure of the present invention in detail.
As depicted in figs. 1 and 2, piezoelectric speaker of the present invention comprises shell, and shell forms the external frame of this piezoelectric speaker, and this implementation process housing comprises the first shell 11 and second housing 12, is provided with phonate hole 13 at shell; Audible segment, described audible segment comprise the vibrating diaphragm 2 that corresponding phonate hole 13 arranges; Running part, described running part comprise that support 7 reaches and the driver plate 3 of vibrating diaphragm 2 away from the airtight combination of phonate hole 13 1 sides, vibrating diaphragm 2, driver plate 3 and successively combination of support 7; Oscillating component comprises strutting piece 6 and is electrically connected the piezoelectric patches 4 of external circuit that strutting piece 6 be a plurality of and independent setting, and piezoelectric patches 4 correspondences are arranged on the described strutting piece 6; Strutting piece 6 is hung on the inside of described second housing 12, and the one end is fixed on the described second housing 12, and the other end is fixed on the support 7.
When external circuit alived, piezoelectric patches 4 produced deformation with the external circuit change in voltage, drove strutting piece 6 vibrations, and strutting piece 6 is by support 7 and driver plate 3 combinations, and vibration conducts to vibrating diaphragm 2 by driver plate 3, drives vibrating diaphragm 2 vibration soundings.
The piezoelectric speaker of this structure, simple in structure, volume is little, and cost is low, and electro-acoustic conversion efficiency is high; Owing to be provided with a plurality of independently strutting pieces 6, an end of strutting piece 6 is fixed on the shell simultaneously, and the other end is fixed on the support 7, can reduce its resonance frequency, improves acoustical behavior.
In addition, preferred embodiment is in this implementation process, strutting piece 6 is sheet metal structure, and the strutting piece of sheet metal structure can provide stronger support for oscillating component and running part, and the strutting piece of a sheet metal structure circuit can doublely doing piezoelectric patches 4 uses in addition; Be provided with arrangements of electric connection 5 between piezoelectric patches 4 and external circuit, arrangements of electric connection 5 can be FPCB, so that the circuit design of piezoelectric speaker; In this implementation process, vibrating diaphragm 2 comprises edge part 21 and pars intermedia 22, and wherein pars intermedia 22 is planar structure, the driver plate of driver plate 3 preferred rigid structures, and 22 settings of corresponding pars intermedia, and this structure is beneficial to the vibration balancing of piezoelectric speaker; In addition, the piezoelectric speaker that the present invention relates to is square structure, and the piezoelectric speaker of square structure can reduce loud speaker at terminal electronic component installing space;
Fig. 3 is a kind of improvement project of piezoelectric speaker of the present invention, and as shown in Figure 3, in this improvement project, strutting piece 6 and piezoelectric patches 4 prolong, and support 7 is arranged on the end of strutting piece 6.This improvement project, because the length that the size of piezoelectric patches 4 and strutting piece 6 increases in admissible design space, support 7 is arranged on the end of strutting piece 6 simultaneously, further strengthened the actuating force of oscillating component, and then in the certain situation of piezoelectric speaker size, provide more high-power output; This improvement project can design according to different design requirements the length of strutting piece 6.
It below only is the invention process case; be not limited to the present invention; piezoelectric speaker also can be prototype or racetrack among the present invention; vibrating diaphragm also can be other structures such as round or racetrack; the pars intermedia of vibrating diaphragm can be plane or ball roof construction; perhaps pars intermedia is engraved structure; directly by driver plate and edge part Seal Design; the neither enforcement that affects the invention; as long as the equivalence that those of ordinary skills do according to disclosed content is modified or changed, all should include in the protection range of putting down in writing in claims.
Claims (6)
1. piezoelectric speaker comprises: shell, form the external frame of described piezoelectric speaker, and be provided with phonate hole at described shell; It is characterized in that: also comprise audible segment, described audible segment comprises the vibrating diaphragm that corresponding described phonate hole arranges; Running part, described running part comprise that support reaches and the driver plate of described vibrating diaphragm away from the airtight combination of described phonate hole one side, described vibrating diaphragm, driver plate and the successively combination of described support; Oscillating component comprises the piezoelectric patches and a plurality of independent strutting piece that arranges that are electrically connected external circuit, and described piezoelectric patches correspondence is arranged on the described strutting piece; Described strutting piece is hung on the inside of described shell, and the one end is fixed on the described shell, and the other end is fixed on the described support.
2. piezoelectric speaker according to claim 1 is characterized in that: be provided with arrangements of electric connection between described piezoelectric patches and the described external circuit; Described strutting piece is sheet metal, and described arrangements of electric connection and described sheet metal form respectively two electrodes of described piezoelectric patches.
3. piezoelectric speaker according to claim 2, it is characterized in that: described arrangements of electric connection is flexible circuit board.
4. the described piezoelectric speaker of arbitrary claim according to claim 1-3, it is characterized in that: described vibrating diaphragm comprises pars intermedia and edge part; Described driver plate is corresponding is combined with the pars intermedia of described vibrating diaphragm.
5. piezoelectric speaker according to claim 4, it is characterized in that: described piezoelectric speaker is square structure.
6. the described piezoelectric speaker of arbitrary claim according to claim 1-3 is characterized in that: described strutting piece extends towards the driver plate body interior, and described piezoelectric patches correspondence is arranged on the described strutting piece, and the end of described strutting piece and described support are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105580095A CN103067839A (en) | 2012-12-20 | 2012-12-20 | Piezoelectric loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105580095A CN103067839A (en) | 2012-12-20 | 2012-12-20 | Piezoelectric loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103067839A true CN103067839A (en) | 2013-04-24 |
Family
ID=48110269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105580095A Pending CN103067839A (en) | 2012-12-20 | 2012-12-20 | Piezoelectric loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103067839A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104219608A (en) * | 2014-09-15 | 2014-12-17 | 精拓丽音科技（北京）有限公司 | Modulation type piezoelectric loudspeaker, loudspeaker system and control method thereof |
| CN107820184A (en) * | 2017-11-28 | 2018-03-20 | 歌尔股份有限公司 | A kind of piezoelectricity sound-producing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1390431A (en) * | 1999-07-23 | 2003-01-08 | 数字声能公司 | Flat panel speaker |
| US7151837B2 (en) * | 2000-01-27 | 2006-12-19 | New Transducers Limited | Loudspeaker |
| CN202121774U (en) * | 2011-06-30 | 2012-01-18 | 国光电器股份有限公司 | Piezoelectric loudspeaker |
| CN102395092A (en) * | 2011-09-27 | 2012-03-28 | 清华大学 | Piezoelectric speaker based on piezoelectric cantilever beam |
| CN202310094U (en) * | 2011-09-27 | 2012-07-04 | 清华大学 | Piezoelectric loudspeaker of piezoelectric cantilever beam |
| CN203027481U (en) * | 2012-12-20 | 2013-06-26 | 歌尔声学股份有限公司 | Piezoelectric speaker |
| CN203027479U (en) * | 2012-12-20 | 2013-06-26 | 歌尔声学股份有限公司 | Piezoelectric speaker |
-
2012
- 2012-12-20 CN CN2012105580095A patent/CN103067839A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1390431A (en) * | 1999-07-23 | 2003-01-08 | 数字声能公司 | Flat panel speaker |
| US7151837B2 (en) * | 2000-01-27 | 2006-12-19 | New Transducers Limited | Loudspeaker |
| CN202121774U (en) * | 2011-06-30 | 2012-01-18 | 国光电器股份有限公司 | Piezoelectric loudspeaker |
| CN102395092A (en) * | 2011-09-27 | 2012-03-28 | 清华大学 | Piezoelectric speaker based on piezoelectric cantilever beam |
| CN202310094U (en) * | 2011-09-27 | 2012-07-04 | 清华大学 | Piezoelectric loudspeaker of piezoelectric cantilever beam |
| CN203027481U (en) * | 2012-12-20 | 2013-06-26 | 歌尔声学股份有限公司 | Piezoelectric speaker |
| CN203027479U (en) * | 2012-12-20 | 2013-06-26 | 歌尔声学股份有限公司 | Piezoelectric speaker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104219608A (en) * | 2014-09-15 | 2014-12-17 | 精拓丽音科技（北京）有限公司 | Modulation type piezoelectric loudspeaker, loudspeaker system and control method thereof |
| CN104219608B (en) * | 2014-09-15 | 2018-08-10 | 精拓丽音科技（北京）有限公司 | A kind of modulation type piezoelectric speaker, speaker system and its control method |
| 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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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130424 |