CN103611671A - Piezoelectric ceramic vibrator driven by low voltage - Google Patents
Piezoelectric ceramic vibrator driven by low voltage Download PDFInfo
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- CN103611671A CN103611671A CN201310618976.0A CN201310618976A CN103611671A CN 103611671 A CN103611671 A CN 103611671A CN 201310618976 A CN201310618976 A CN 201310618976A CN 103611671 A CN103611671 A CN 103611671A
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Abstract
The invention discloses a piezoelectric ceramic vibrator driven by low voltage. The piezoelectric ceramic vibrator comprises an upper cover, a vibration piece, a mass block and a shell, wherein the vibration piece is composed of a piezoelectric ceramic piece and a metal beam, the piezoelectric ceramic piece is fixed to the upper surface of the metal beam, the two ends of the metal beam are fixedly connected with the upper cover, the mass block is fixed to the lower portion of the metal beam in a hung mode, the vibration piece and the mass block are fixed and then placed in the shell, and the piezoelectric ceramic piece is formed through a multi-layer ceramic piezoelectric membrane. By means of the multi-layer membrane piezoelectric ceramic structure and the internal design of the vibrator of a mechanical structure, drive voltage of the vibrator is greatly reduced, vibration of the piezoelectric ceramic piece is effectively converted into vibration of the whole vibrator, and finally the vibrator is high in response speed and low in drive voltage compared with other vibrators.
Description
Technical field
The present invention relates to a kind of vibrator, particularly a kind of piezo-ceramic vibrators of low-voltage driving.
Background technology
Traditional electromagnetic induction vibrator, generally comprises rotor and stator.When vibrator starts or stops, rotor is changed between inactive state and High Rotation Speed state, the common 50-100mS consuming time of this transfer process, and this time is the response time of vibrator.Along with popularizing of electronic game in intelligent electronic device, this response time, longer defect slowly highlighted.The vibrator made from piezoelectric ceramics, has solved this problem well.In piezo-ceramic vibrators, piezoelectric ceramics only produces small mechanical oscillation, amplifies the vibration that becomes vibrator with friction coupling transform by resonance.Because the distortion of piezoelectric ceramics is little, response speed is very fast, only needs 50-100 μ S, so piezo-ceramic vibrators overcome the shortcoming of traditional electrical magnetic induction vibrator response lag completely, is expected to be used widely in intelligent electronic device.
In CN 202435352 U, disclose a kind of piezoelectric vibrator, and a kind of special mechanical resonance structure for amplifying design is provided.This vibration apparatus standby response time and larger power output efficiently, but driving voltage is very high.As everyone knows, what driving piezoelectric leaned on is electric field, and driving voltage and the material thickness of piezoelectric ceramics are closely related.For example, for driving electric field, be the piezoelectric ceramics of 1kV/mm, when material thickness is 1mm, its driving voltage is up to 1000V.For general piezoelectric ceramic body material, its thickness is generally 0.5mm left and right, in order to make it produce the required voltage applying of distortion up to 500V.The piezo-ceramic vibrators that adopts this body material to make, must assist the chip that boosts, and the cost of this chip that boosts is extremely high in the electronic circuit of its application, and therefore this piezoelectric vibrator, is difficult to really be applied.
For piezo-ceramic vibrators is popularized, must reduce its driving voltage, thereby reduce its use cost.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides a kind of piezoelectric ceramics that uses as the vibrator of vibrating elements, its driving voltage is lower than the piezo-ceramic vibrators of the low-voltage driving of 50V.
The present invention for the technical scheme that solves its technical problem and adopt is: a kind of piezo-ceramic vibrators of low-voltage driving, comprise upper cover, vibrating reed, mass and housing, described vibrating reed is comprised of piezoelectric ceramic piece and beams of metal, described piezoelectric ceramic piece is fixed on beams of metal upper surface, the two ends of described beams of metal are fixedly connected with upper cover, described mass hangs the below that is fixed on beams of metal, described vibrating reed and mass are fixedly placed in housing, and described piezoelectric ceramic piece is that multi-layer ceramics piezoelectric membrane forms.
As a further improvement on the present invention, described piezoelectric ceramic piece is adhesive in beams of metal upper surface, and two ends and the upper cover of described beams of metal are welded and fixed, and described mass is adhesive in the below of beams of metal.
As a further improvement on the present invention, the two ends of described beams of metal and upper cover are fixed by laser weld.
As a further improvement on the present invention, the both sides of described upper cover are connected with several lock rings, and the upper surface of corresponding housing is provided with some screws, by bolt, pass lock ring and screw is fixed on upper cover in housing.
As a further improvement on the present invention, described housing is provided with a groove, and described vibrating reed and mass are fixedly placed in groove, and the degree of depth of groove is greater than the thickness after vibrating reed and mass stack.
The invention has the beneficial effects as follows: the present invention is by adopting the vibrator indoor design of plural layers piezoelectric ceramics structure and frame for movement, the driving voltage of vibrator is reduced greatly, the vibration of piezoelectric ceramic piece is effectively changed into the vibration of vibrator integral body, finally become fast response time, driving voltage is lower than other vibrator.
Accompanying drawing explanation
Fig. 1 is that structure of the present invention is disassembled schematic diagram;
Fig. 2 is structural representation of the present invention;
In figure, indicate: 1-upper cover; 2-vibrating reed; 3-mass; 4-housing; 5-lock ring; 6-screw; 7-bolt; 8-groove; 21-piezoelectric ceramic piece; 22-beams of metal.
The specific embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment only, for explaining the present invention, does not form limiting the scope of the present invention.
Fig. 1 shows a kind of embodiment of the piezo-ceramic vibrators of a kind of low-voltage driving of the present invention, comprise upper cover 1, vibrating reed 2, mass 3 and housing 4, described vibrating reed 2 is comprised of piezoelectric ceramic piece 21 and beams of metal 22, described vibrating reed 2 is fixedly placed in housing 4 with mass 3, and described piezoelectric ceramic piece 21 is multi-layer ceramics piezoelectric membrane composition, gluing or other modes of described piezoelectric ceramic piece 21 are fixed on beams of metal 22 upper surfaces, the two ends of described beams of metal 22 and upper cover 1 are fixed by laser weld or other modes, gluing or other modes of described mass 3 are below beams of metal 22, piezoelectric ceramic piece 21 and and beams of metal 22 form vibrating reed 2 structures, the voltage acting on piezoelectric ceramic piece 21 causes vibrating reed 2 to produce flexural deformation, during vibrator works, vibrating reed is in its first rank flexural resonance state, the both sides of described upper cover 1 are connected with several lock rings 5, the upper surface of corresponding housing 4 is provided with some screws 6, by bolt 7, through lock ring 5 and screw 6, upper cover is fixed in housing, described housing 4 is provided with a groove 8, described vibrating reed 2 is fixedly placed in groove 8 with mass 3, and the degree of depth of groove 8 is greater than the thickness after vibrating reed 2 and mass 3 stacks.
Piezoelectric ceramic piece thickness in common vibrator is 0.4mm, if single layer structure, make it produce the required voltage applying of distortion and reach 400V, necessary auxiliary boost chip, piezoelectric ceramic piece 21 in the present embodiment is comprised of multilayer monolithic layer, and the thickness of each monolithic layer is 40 μ m, by 10 single-layer ceramic sheets by laminating, co-firing technology is made, the required voltage applying of chip is 40V, thereby greatly reduces driving voltage.
Claims (5)
1. the piezo-ceramic vibrators of a low-voltage driving, comprise upper cover (1), vibrating reed (2), mass (3) and housing (4), it is characterized in that: described vibrating reed (2) is comprised of piezoelectric ceramic piece (21) and beams of metal (22), described piezoelectric ceramic piece (21) is fixed on beams of metal (22) upper surface, the two ends of described beams of metal (22) are fixedly connected with upper cover (1), described mass (3) hangs the below that is fixed on beams of metal (22), described vibrating reed (2) is fixedly placed in housing (4) with mass (3), and described piezoelectric ceramic piece (21) is multi-layer ceramics piezoelectric membrane composition.
2. the piezo-ceramic vibrators of low-voltage driving according to claim 1, it is characterized in that: described piezoelectric ceramic piece (21) is adhesive in beams of metal (22) upper surface, the two ends of described beams of metal (22) and upper cover (1) are welded and fixed, and described mass (3) is adhesive in the below of beams of metal (22).
3. the piezo-ceramic vibrators of low-voltage driving according to claim 2, is characterized in that: two ends and the upper cover of described beams of metal (22) are fixed by laser weld.
4. the piezo-ceramic vibrators of low-voltage driving according to claim 1, it is characterized in that: the both sides of described upper cover (1) are connected with several lock rings (5), the upper surface of corresponding housing (4) is provided with some screws (6), by bolt (7), through lock ring (5) and screw (6), upper cover is fixed in housing.
5. the piezo-ceramic vibrators of low-voltage driving according to claim 1, it is characterized in that: described housing (4) is provided with a groove (8), described vibrating reed (2) is fixedly placed in groove (8) with mass (3), and the degree of depth of groove (8) is greater than the thickness after vibrating reed (2) and mass (3) stack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310618976.0A CN103611671A (en) | 2013-11-29 | 2013-11-29 | Piezoelectric ceramic vibrator driven by low voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310618976.0A CN103611671A (en) | 2013-11-29 | 2013-11-29 | Piezoelectric ceramic vibrator driven by low voltage |
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| Publication Number | Publication Date |
|---|---|
| CN103611671A true CN103611671A (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310618976.0A Pending CN103611671A (en) | 2013-11-29 | 2013-11-29 | Piezoelectric ceramic vibrator driven by low voltage |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105696651A (en) * | 2016-04-08 | 2016-06-22 | 厦门矽创微电子科技有限公司 | Intelligent water supplying pipeline with automatic water supplying safety monitoring capacity |
| CN110049218A (en) * | 2019-04-19 | 2019-07-23 | 信利光电股份有限公司 | Imaging method, device, system and the readable storage medium storing program for executing of flexible sensor |
| CN115055355A (en) * | 2022-05-27 | 2022-09-16 | 中国长江三峡集团有限公司福建分公司 | Three-lamination type bending vibrator, bending type transducer and bandwidth widening method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1429410A (en) * | 2000-05-15 | 2003-07-09 | 费斯托合资公司 | Piezoelectric flexion converter and use thereof |
| WO2006059856A1 (en) * | 2004-12-03 | 2006-06-08 | Ibule Photonics Co., Ltd | Piezoelectric vibrator with multi acting vibrator |
| US20060283253A1 (en) * | 2005-05-20 | 2006-12-21 | Samsung Electro-Mechanics Co., Ltd. | Piezoelectric vibrator and ultrasonic motor having piezoelectric vibrator |
| CN202435352U (en) * | 2011-11-21 | 2012-09-12 | 深圳市康弘环保技术有限公司 | Cell phone piezoelectric ceramic vibrator |
| US20130300261A1 (en) * | 2012-05-08 | 2013-11-14 | Samsung Electro-Mechanics Co., Ltd. | Piezoelectric vibration module |
-
2013
- 2013-11-29 CN CN201310618976.0A patent/CN103611671A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1429410A (en) * | 2000-05-15 | 2003-07-09 | 费斯托合资公司 | Piezoelectric flexion converter and use thereof |
| WO2006059856A1 (en) * | 2004-12-03 | 2006-06-08 | Ibule Photonics Co., Ltd | Piezoelectric vibrator with multi acting vibrator |
| US20060283253A1 (en) * | 2005-05-20 | 2006-12-21 | Samsung Electro-Mechanics Co., Ltd. | Piezoelectric vibrator and ultrasonic motor having piezoelectric vibrator |
| CN202435352U (en) * | 2011-11-21 | 2012-09-12 | 深圳市康弘环保技术有限公司 | Cell phone piezoelectric ceramic vibrator |
| US20130300261A1 (en) * | 2012-05-08 | 2013-11-14 | Samsung Electro-Mechanics Co., Ltd. | Piezoelectric vibration module |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105696651A (en) * | 2016-04-08 | 2016-06-22 | 厦门矽创微电子科技有限公司 | Intelligent water supplying pipeline with automatic water supplying safety monitoring capacity |
| CN110049218A (en) * | 2019-04-19 | 2019-07-23 | 信利光电股份有限公司 | Imaging method, device, system and the readable storage medium storing program for executing of flexible sensor |
| CN115055355A (en) * | 2022-05-27 | 2022-09-16 | 中国长江三峡集团有限公司福建分公司 | Three-lamination type bending vibrator, bending type transducer and bandwidth widening method |
| CN115055355B (en) * | 2022-05-27 | 2023-12-19 | 中国长江三峡集团有限公司福建分公司 | Three-lamination type bending vibrator, bending transducer and bandwidth widening method |
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Application publication date: 20140305 |