CN104507028A - Lever type piezoelectric loudspeaker - Google Patents
Lever type piezoelectric loudspeaker Download PDFInfo
- Publication number
- CN104507028A CN104507028A CN201410837753.8A CN201410837753A CN104507028A CN 104507028 A CN104507028 A CN 104507028A CN 201410837753 A CN201410837753 A CN 201410837753A CN 104507028 A CN104507028 A CN 104507028A
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- protruding block
- support
- piezoelectric ceramic
- block
- ceramic driver
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Abstract
The invention relates to a lever type piezoelectric loudspeaker which comprises an upper support, a lower support, a cascade piezoelectric ceramic driver, a composite voice diaphragm compressed by the upper support and the lower support, and a lever arm disposed between the composite voice diaphragm and the cascade piezoelectric ceramic driver. One end of the lever arm is provided with an upper protruding block protruding upwardly, and the other end thereof is provided with a lower protruding block protruding downwardly. The lever arm is further provided with a support protruding block. The distance from the support protruding block to the upper protruding block is larger than that from the support protruding block to the lower protruding block. The cascade piezoelectric ceramic driver is disposed on the lower support. The upper protruding block is in contact with the composite voice diaphragm. The lower protruding block is in contact with the cascade piezoelectric ceramic driver. The lower support is provided with a support block. The support block is provided with magnetic steel. The magnetic steel is in magnetic connection with the support protruding block. By the structure, the problem that the volume of existing piezoelectric loudspeakers cannot meet market requirements is solved, the resonance frequency of the piezoelectric loudspeaker is lowered at the same time, and voice quality of the piezoelectric loudspeaker is improved.
Description
Technical field
The present invention relates to a kind of loud speaker, particularly lever piezoelectric speaker.
Background technology
The ultra-thin size of piezoelectric speaker is always by the concern of design engineer, but itself volume is low, and resonance frequency is high, and sense of hearing is poor, so be difficult in marketing and use.
Summary of the invention
The object of this invention is to provide a kind of can improve sound pressure level output, the lever piezoelectric speaker that reduces harmonic frequency of loudspeakers, improve loud speaker tonequality.
The technical scheme realizing the object of the invention is as follows:
Lever piezoelectric speaker, comprise upper bracket and lower carriage, also comprise stacked piezoelectric ceramic driver, the compound voice diaphragm compressed by upper bracket and lower carriage and the lever arm be arranged between compound voice diaphragm and stacked piezoelectric ceramic driver, described lever arm one end arranges the upper protruding block raised up, the other end arranges the lower protruding block to lower convexity, described lever arm is also provided with supporting lug, described supporting lug is greater than the distance of supporting lug to lower protruding block to the distance of upper protruding block, described stacked piezoelectric ceramic driver is arranged on lower carriage, described upper protruding block contacts with compound voice diaphragm, described lower protruding block contacts with stacked piezoelectric ceramic driver, described lower carriage arranges back-up block, described back-up block arranges magnet steel, described magnet steel is connected with supporting lug magnetic.
After adopting said structure, the present invention utilizes multi-layered ceramic as driving, utilizes lever arm to be amplified by piezoelectric ceramic amplitude, improves front end sound film amplitude, thus improve the output of sound pressure level.The volume that can solve existing piezoelectric speaker does not reach the problem of market demands, reduces piezoelectric speaker resonance frequency simultaneously, improves the tonequality of piezoelectric speaker.
Further, in order to improve loud speaker tonequality, described compound voice diaphragm upper surface arranges ball top, and on described compound voice diaphragm, both sides, ball top arrange projection.
Preferably, in order to make have comparatively large amplitude and actuating force during driver drives, the described stacked piezoelectric ceramic driver number of plies is 5-7 layer, and capacitance is 2uF.
Further, in order to by stacked piezoelectric ceramic driver Amplitude amplification 3 times, described supporting lug is supporting lug to 3 times of distance of lower protruding block to the distance of upper protruding block.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is sectional structure schematic diagram of the present invention.
In figure: 1 is upper bracket, 2 is lower carriage, and 3 is stacked piezoelectric ceramic driver, and 4 is compound voice diaphragm, and 5 is lever arm, and 6 is upper protruding block, and 7 is lower protruding block, and 8 is supporting lug, and 9 is back-up block, and 10 is magnet steel, and 11 is ball top.
Embodiment
Lever piezoelectric speaker of the present invention comprises upper bracket 1 as shown in Figure 1, lower carriage 2, stacked piezoelectric ceramic driver 3, the compound voice diaphragm 4 compressed by upper bracket 1 and lower carriage 2 and the lever arm 5 be arranged between compound voice diaphragm 4 and stacked piezoelectric ceramic driver 3, described lever arm 5 one end arranges the upper protruding block 6 raised up, the other end arranges the lower protruding block 7 to lower convexity, described lever arm 5 is also provided with supporting lug 8, described supporting lug 8 is greater than the distance of supporting lug 8 to lower protruding block 7 to the distance of upper protruding block 6, described stacked piezoelectric ceramic driver 3 is arranged on lower carriage 2, described upper protruding block 6 contacts with compound voice diaphragm 4, described lower protruding block 7 contacts with stacked piezoelectric ceramic driver 3, described lower carriage 2 arranges back-up block 9, described back-up block 9 arranges magnet steel 10, described magnet steel 10 is connected with supporting lug 8 magnetic, described compound voice diaphragm 4 upper surface arranges ball top 11, on described compound voice diaphragm 4, both sides, ball top 11 arrange projection, described stacked piezoelectric ceramic driver 3 number of plies is 5-7 layer, capacitance is 2uF.
When needs are by stacked piezoelectric ceramic driver 3 Amplitude amplification 3 times, only needing to be set to supporting lug 8 to the distance of upper protruding block 6 is supporting lugs 8 to 3 times of distance of lower protruding block 7.
After adopting said structure, the present invention utilizes multi-layered ceramic as driving, utilizes lever arm to be amplified by piezoelectric ceramic amplitude, improves front end sound film amplitude, thus improve the output of sound pressure level.The volume that can solve existing piezoelectric speaker does not reach the problem of market demands, reduces piezoelectric speaker resonance frequency simultaneously, improves the tonequality of piezoelectric speaker.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (4)
1. lever piezoelectric speaker, comprise upper bracket and lower carriage, it is characterized in that: also comprise stacked piezoelectric ceramic driver, the compound voice diaphragm compressed by upper bracket and lower carriage and the lever arm be arranged between compound voice diaphragm and stacked piezoelectric ceramic driver, described lever arm one end arranges the upper protruding block raised up, the other end arranges the lower protruding block to lower convexity, described lever arm is also provided with supporting lug, described supporting lug is greater than the distance of supporting lug to lower protruding block to the distance of upper protruding block, described stacked piezoelectric ceramic driver is arranged on lower carriage, described upper protruding block contacts with compound voice diaphragm, described lower protruding block contacts with stacked piezoelectric ceramic driver, described lower carriage arranges back-up block, described back-up block arranges magnet steel, described magnet steel is connected with supporting lug magnetic.
2. lever piezoelectric speaker according to claim 1, is characterized in that: described compound voice diaphragm upper surface arranges ball top, and on described compound voice diaphragm, both sides, ball top arrange projection.
3. lever piezoelectric speaker according to claim 1, is characterized in that: the described stacked piezoelectric ceramic driver number of plies is 5-7 layer, and capacitance is 2uF.
4. according to the lever piezoelectric speaker in claim 1 or 2 or 3 described in any one, it is characterized in that: described supporting lug is supporting lug to 3 times of distance of lower protruding block to the distance of upper protruding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410837753.8A CN104507028A (en) | 2014-12-29 | 2014-12-29 | Lever type piezoelectric loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410837753.8A CN104507028A (en) | 2014-12-29 | 2014-12-29 | Lever type piezoelectric loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104507028A true CN104507028A (en) | 2015-04-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410837753.8A Pending CN104507028A (en) | 2014-12-29 | 2014-12-29 | Lever type piezoelectric loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104507028A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2314539Y (en) * | 1997-08-06 | 1999-04-14 | 颜磊 | Speaker |
| US20110187347A1 (en) * | 2008-08-08 | 2011-08-04 | Nxp B.V. | Electromechanical transducer and a method of providing an electromechanical transducer |
| CN102572661A (en) * | 2012-03-15 | 2012-07-11 | 国光电器股份有限公司 | Piezoelectric speaker |
| JP2013090309A (en) * | 2011-10-24 | 2013-05-13 | Kddi Corp | Acoustic transducer, speaker, and electronic apparatus |
| CN204392564U (en) * | 2014-12-29 | 2015-06-10 | 汉得利（常州）电子股份有限公司 | Lever piezoelectric speaker |
-
2014
- 2014-12-29 CN CN201410837753.8A patent/CN104507028A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2314539Y (en) * | 1997-08-06 | 1999-04-14 | 颜磊 | Speaker |
| US20110187347A1 (en) * | 2008-08-08 | 2011-08-04 | Nxp B.V. | Electromechanical transducer and a method of providing an electromechanical transducer |
| JP2013090309A (en) * | 2011-10-24 | 2013-05-13 | Kddi Corp | Acoustic transducer, speaker, and electronic apparatus |
| CN102572661A (en) * | 2012-03-15 | 2012-07-11 | 国光电器股份有限公司 | Piezoelectric speaker |
| CN204392564U (en) * | 2014-12-29 | 2015-06-10 | 汉得利（常州）电子股份有限公司 | Lever piezoelectric speaker |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150408 |