CN107454534B - Double-layer piezoelectric ceramic actuator - Google Patents
Double-layer piezoelectric ceramic actuator Download PDFInfo
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- CN107454534B CN107454534B CN201710827758.6A CN201710827758A CN107454534B CN 107454534 B CN107454534 B CN 107454534B CN 201710827758 A CN201710827758 A CN 201710827758A CN 107454534 B CN107454534 B CN 107454534B
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- 239000000919 ceramic Substances 0.000 title claims abstract description 51
- 230000001681 protective effect Effects 0.000 claims abstract description 37
- 239000000725 suspension Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 4
- 230000026683 transduction Effects 0.000 abstract description 4
- 238000010361 transduction Methods 0.000 abstract description 4
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses a double-layer piezoelectric ceramic actuator, which comprises vibrating pieces, ceramic vibrating pieces and a protective shell, wherein the vibrating pieces are positioned at two ends of the protective shell, and the ceramic vibrating pieces are positioned in the protective shell and between the two vibrating pieces; the inner wall of the protective shell is provided with a circle of fixing ring, the fixing ring is provided with two circles of fixing clamping grooves matched with the ceramic vibrating plate, at least one spring is arranged between the ceramic vibrating plate and the vibrating plate, one end of the spring is connected with the center of the ceramic vibrating plate, and the other end of the spring is connected with the center of the vibrating plate. The invention can obtain larger vibration output under the same power consumption to improve the transduction efficiency of the product, greatly increase the whole vibration effect, and has stable quality and long service life.
Description
Technical Field
The invention belongs to the technical field of precision driving elements, and particularly relates to a double-layer piezoelectric ceramic actuator.
Background
At present, most of the existing piezoelectric actuating products on the market are single ceramic vibrating plates, the vibration quantity of the piezoelectric actuating products is smaller, the requirements for high vibration force cannot be met, the single ceramic vibrating plates are not externally protected in the use process, the piezoelectric actuating products are extremely fragile, the sensitivity to temperature and humidity is higher, the electrical performance of the piezoelectric actuating products can be changed at the working conditions of high temperature, high humidity and the like, and the stability of the piezoelectric actuating products is unstable. For industries with high requirements on product stability and instruments and equipment under severe environmental conditions, a piezoelectric actuator with high vibration force and stable characteristics is urgently needed to make up market demands.
Disclosure of Invention
The invention mainly solves the technical problem of providing the double-layer piezoelectric ceramic actuator, which can obtain larger vibration output under the same power consumption so as to improve the transduction efficiency of products, greatly increase the integral vibration effect, and has stable quality and long service life.
In order to solve the technical problems, the invention adopts a technical scheme that: the double-layer piezoelectric ceramic actuator comprises vibrating pieces, ceramic vibrating pieces and a protective shell, wherein the vibrating pieces are positioned at two ends of the protective shell, and the ceramic vibrating pieces are positioned in the protective shell and are positioned between the two vibrating pieces;
the inner wall of the protective shell is provided with a circle of fixing ring, the fixing ring is provided with two circles of fixing clamping grooves matched with the ceramic vibration plate, at least one spring is arranged between the ceramic vibration plate and the vibration plate, one end of the spring is connected with the center of the ceramic vibration plate, and the other end of the spring is connected with the center of the vibration plate;
the inner wall of the protective shell is an inclined plane, the inclined direction of the inclined plane gradually inclines from the center of the inner wall of the protective shell to the two ends of the protective shell to the center of the protective shell, and the two ends of the inner wall of the protective shell are respectively provided with a circle of limit grooves matched with the periphery of the vibrating piece.
Further, a plurality of suspension sheets which are uniformly distributed are arranged between the vibrating reed and the ceramic vibrating sheet, and the suspension sheets are circumferentially arranged along the inner wall of the protective shell.
Further, the width of the limit groove is larger than the thickness of the vibrating piece.
Further, the shape of the suspension is a sector, a rectangle or an ellipse.
Further, a vibration-proof plate is arranged between the two ceramic vibration plates.
Further, an insulating layer is arranged on the periphery of the ceramic vibration plate in a circle, and the insulating layer is positioned between the ceramic vibration plate and the fixing clamping groove.
The beneficial effects of the invention are as follows:
according to the invention, at least one spring is arranged between the ceramic vibrating plate and the vibrating piece, one end of the spring is connected with the center of the ceramic vibrating plate, the other end of the spring is connected with the center of the vibrating piece, the inner wall of the protective shell is an inclined plane, the inclined direction of the inclined plane gradually inclines towards the center of the protective shell from the inner wall center of the protective shell to the two ends of the protective shell, when the same volume of air vibrates in the actuator, the vibrating piece generates larger displacement, the vibration-proof plate is arranged between the ceramic vibrating plates, so that the mutual generation of vibration cancellation of the two ceramic vibrating plates can be prevented, larger vibration output can be obtained under the same power consumption, the product transduction efficiency is improved, the whole vibration effect is greatly increased, the quality is stable, and the service life is long.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
the parts in the drawings are marked as follows:
the vibration plate comprises a vibration plate 1, a ceramic vibration plate 2, a protective shell 3, a fixing ring 4, a fixing clamping groove 5, a spring 6, a limiting groove 7, a suspension 8 and a vibration-proof plate 9.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
Examples: the double-layer piezoelectric ceramic actuator comprises a vibrating piece 1, ceramic vibrating pieces 2 and a protective shell 3, wherein the vibrating piece 1 is positioned at two ends of the protective shell 3, and the ceramic vibrating pieces 2 are positioned in the protective shell 3 and are positioned between the two vibrating pieces 1;
the inner wall of the protective shell 3 is provided with a circle of fixing ring 4, the fixing ring 4 is provided with two circles of fixing clamping grooves 5 matched with the ceramic vibrating plate 2, at least one spring 6 is arranged between the ceramic vibrating plate 2 and the vibrating plate 1, one end of the spring 6 is connected with the center of the ceramic vibrating plate 2, and the other end of the spring 6 is connected with the center of the vibrating plate 1;
the inner wall of the protective casing 3 is an inclined plane, the inclined direction of the inclined plane gradually inclines from the center of the inner wall of the protective casing 3 to the two ends of the protective casing 3 to the center of the protective casing 3, and the two ends of the inner wall of the protective casing 3 are respectively provided with a circle of limit grooves 7 matched with the periphery of the vibrating piece 1.
A plurality of suspension plates 8 which are uniformly distributed are arranged between the vibrating reed 1 and the ceramic vibrating plate 2, and the suspension plates 8 are circumferentially arranged along the inner wall of the protective shell 3.
The width of the limit groove 7 is larger than the thickness of the vibrating piece 1.
The suspension 8 is sector, rectangular or elliptical in shape.
A vibration-proof plate 9 is arranged between the two ceramic vibration plates 2.
An insulating layer is arranged on the periphery of the ceramic vibrating plate 2 in a circle, and the insulating layer is positioned between the ceramic vibrating plate 2 and the fixing clamping groove 5.
The working principle of the invention is as follows: according to the invention, at least one spring is arranged between the ceramic vibrating plate and the vibrating piece, one end of the spring is connected with the center of the ceramic vibrating plate, the other end of the spring is connected with the center of the vibrating piece, the inner wall of the protective shell is an inclined plane, the inclined direction of the inclined plane gradually inclines towards the center of the protective shell from the inner wall center of the protective shell to the two ends of the protective shell, when the same volume of air vibrates in the actuator, the vibrating piece generates larger displacement, the vibration-proof plate is arranged between the ceramic vibrating plates, so that the mutual generation of vibration cancellation of the two ceramic vibrating plates can be prevented, larger vibration output can be obtained under the same power consumption, the product transduction efficiency is improved, the whole vibration effect is greatly increased, the quality is stable, and the service life is long.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the present invention and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present invention.
Claims (5)
1. A double-layer piezoelectric ceramic actuator, characterized in that: the vibration plate comprises vibration plates (1), ceramic vibration plates (2) and a protective shell (3), wherein the vibration plates are positioned at two ends of the protective shell, and the ceramic vibration plates are positioned in the protective shell and are positioned between the two vibration plates; the inner wall of the protective shell is provided with a circle of fixing rings (4), each fixing ring is provided with two circles of fixing clamping grooves (5) matched with the ceramic vibrating plate, at least one spring (6) is arranged between the ceramic vibrating plate and the vibrating plate, one end of each spring is connected with the center of the ceramic vibrating plate, and the other end of each spring is connected with the center of the vibrating plate; the inner wall of shell is the inclined plane, the incline direction on inclined plane is followed shell's inner wall center extremely shell's both ends gradually to shell's center slope, shell's inner wall both ends respectively be equipped with round with the periphery assorted spacing groove (7) of trembler, be equipped with a plurality of evenly distributed's suspension (8) between trembler and the ceramic piece, the suspension is followed shell's inner wall circumference sets up.
2. A two-layer piezoceramic actuator as recited in claim 1, wherein: the width of the limit groove is larger than the thickness of the vibrating piece.
3. A two-layer piezoceramic actuator as recited in claim 1, wherein: the shape of the suspension is a sector, a rectangle or an ellipse.
4. A two-layer piezoceramic actuator as recited in claim 1, wherein: a vibration-proof plate (9) is arranged between the two ceramic vibration plates.
5. A two-layer piezoceramic actuator as recited in claim 1, wherein: the periphery round of ceramic vibrating plate is equipped with the insulating layer, just the insulating layer is located ceramic vibrating plate with between the fixed draw-in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710827758.6A CN107454534B (en) | 2017-09-14 | 2017-09-14 | Double-layer piezoelectric ceramic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710827758.6A CN107454534B (en) | 2017-09-14 | 2017-09-14 | Double-layer piezoelectric ceramic actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107454534A CN107454534A (en) | 2017-12-08 |
| CN107454534B true CN107454534B (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710827758.6A Active CN107454534B (en) | 2017-09-14 | 2017-09-14 | Double-layer piezoelectric ceramic actuator |
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| Country | Link |
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| CN (1) | CN107454534B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4667036B2 (en) * | 2004-12-27 | 2011-04-06 | Ｎｅｃトーキン株式会社 | Multilayer piezoelectric vibrator, manufacturing method thereof, and piezoelectric actuator |
| JPWO2008146678A1 (en) * | 2007-05-23 | 2010-08-19 | 日本電気株式会社 | Piezoelectric actuator and electronic device |
| JP5071546B2 (en) * | 2010-11-05 | 2012-11-14 | 株式会社大真空 | Piezoelectric vibration device |
| CN205283426U (en) * | 2015-12-26 | 2016-06-01 | 深圳市元菱科技股份有限公司 | Low temperature burns ceramic multilayer piezoelectric actuator altogether |
| CN205377711U (en) * | 2016-01-26 | 2016-07-06 | 金陵科技学院 | Omnirange piezoelectric power generating device |
| CN207150828U (en) * | 2017-09-14 | 2018-03-27 | 苏州迈客荣自动化技术有限公司 | A kind of double-deck piezoelectric actuator |
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2017
- 2017-09-14 CN CN201710827758.6A patent/CN107454534B/en active Active
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| CN107454534A (en) | 2017-12-08 |
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