CN203193542U - Tubular piezoelectric vibrator - Google Patents
Tubular piezoelectric vibrator Download PDFInfo
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- CN203193542U CN203193542U CN 201320070344 CN201320070344U CN203193542U CN 203193542 U CN203193542 U CN 203193542U CN 201320070344 CN201320070344 CN 201320070344 CN 201320070344 U CN201320070344 U CN 201320070344U CN 203193542 U CN203193542 U CN 203193542U
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- polyhedral structure
- tubular
- vibrator
- elastic
- cradling piece
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Abstract
A tubular piezoelectric vibrator is disclosed and belongs to the vibration technology and piezoelectric material application field The tubular piezoelectric vibrator comprises a tubular vibrating body and a support, wherein the tubular vibrating body consists of an elastic base body and piezoelectric elements, and the support comprises support rods and a fixed component. The elastic base body is of an elastic tube-shaped polyhedral structure, and the piezoelectric elements are bonded on the outer surface or the inner surface of the elastic tube-shaped polyhedral structure. The outer surface and the inner surface of the elastic tube-shaped polyhedral structure consist of a plurality of planes, or a part of planes and a part of curved surfaces, or curved surfaces. One ends of the support rods are connected with the elastic tube-shaped polyhedral structure or the piezoelectric elements, and the other ends of the support rods are connected with the fixed component. The tubular piezoelectric vibrator is characterized in that the support is installed at a proper position, and therefore standing wave vibration of the elastic tube-shaped polyhedral structure is enabled to produce large amplitude, and amplitude loss of traveling wave motion can be reduced. The tubular piezoelectric vibrator is suitable to be miniaturized and has application prospect in the fields of mobile phone vibrators, ultrasonic electromotors and the like.
Description
Technical field
The utility model relates to a kind of mini vibrator, relates in particular to a kind of tubular piezo-electric vibrator, can be widely used in technical fields such as micromechanics, optical focusing, belongs to vibrotechnique and piezoelectric applied technical field.
Background technology
Most of mobile phone all uses vibrator as reminding device.The vibrator of mobile phone employing at present mainly is Electromagnetic Drive, and electromagnetic vibrator mainly is to utilize eccentric electromagnetic machine to produce vibration.Vibrator needs a period of time from connecting power supply to stable vibration, and Here it is the response time of vibrator to triggering.The response time of the triggering of electromagnetic vibrator is an important indicator estimating vibrator performance.In the modern mobile phone many recreation have been installed, and these recreation application are short as far as possible to the response time requirement of vibrator, just have preferably to experience.Eccentric electromagnetic machine needs the long period from starting to stabilization of speed, and therefore the response time of electromagnetic vibrator is longer at present.
Utilize piezoelectric vibrator to reduce the response time.Piezoelectric vibrator is the inverse piezoelectric effect of utilizing piezoelectric, the vibrator of taking specific structure to make, and it generally is made of piezoelectric ceramic piece and the elastic matrix that combines with it.Under the effect of ac signal, piezoelectric ceramic piece produces vibration and drives the elastic matrix vibration that combines with it.Common piezoelectric vibrator utilizes twin lamella to realize at present.Twin lamella is bonding piezoelectric element on a sheet elastic matrix, utilizes piezoelectric element to drive the plates vibration.The response time of this twin lamella piezoelectric vibrator is less than the response time of eccentric electromagnetic vibrator, and the operating voltage of twin lamella piezoelectric vibrator is higher, is not suitable for working in mobile phone.
The utility model content
The purpose of this utility model is to propose a kind of tubular piezo-electric vibrator, to solve the problem that the present existing mini vibrator response time is long or operating voltage is high.
The technical solution of the utility model is as follows:
A kind of tubular piezo-electric vibrator comprises the tubulose vibrating body of being made up of elastic matrix and piezoelectric element, and it is characterized in that: this vibrator also comprises support, and this support contains cradling piece and fixed part; Described elastic matrix adopts the elastic tubular polyhedral structure, and described piezoelectric element sticks on outer surface or the inner surface of elastic tubular polyhedral structure; One end of described cradling piece is connected with elastic tubular polyhedral structure or piezoelectric element, and the other end of cradling piece is connected with fixed part.
Technical characterictic of the present utility model also is: the outer surface of elastic tubular polyhedral structure is made of a plurality of planes, or curved surface constitutes, or constituted by part plane and part curved surface, the inner surface of elastic tubular polyhedral structure is made of a plurality of planes, or constituted by part plane and part curved surface, or constituted by curved surface; Described piezoelectric element places on the plane of outer surface of elastic tubular polyhedral structure or places on the plane of tubulose polyhedral structure inner surface.
Another technical characterictic of the present utility model is: an end of described cradling piece is connected with an end or the two ends of tubulose vibrating body, the link position of cradling piece and tubulose vibrating body is positioned at the edge of elastic tubular polyhedral structure or the edge of piezoelectric element, and the other end of cradling piece is connected with fixed part.
The number of planes of elastic tubular polyhedral structure outer surface described in the utility model is at least 2; The number of planes of described elastic tubular polyhedral structure inner surface is at least 2.The number of described cradling piece should be smaller or equal to the number of piezoelectric element.
The utility model compared with the prior art, have the following advantages and the high-lighting effect: the utility model adopts the combination of support and tubulose vibrating body, make vibration and the mount vibration of tubulose polyhedral structure be coupled, by the proper arrangement backing positions stationary wave vibration of elastic tubular polyhedral structure is produced than large amplitude, make capable wave motion reduce lost amplitude, thereby can obtain the microminiaturized device of large amplitude; Adopt tubular structure as the vibrating body of vibrating body replacement laminated structure, can obtain more vibration mode, for optimal design high-efficiency vibration device provides more chance.This vibrator is fit to microminiaturized, has application prospect in fields such as mobile phone vibrator and ultrasound electric machines.Analyze by the computer mode to the tubular piezo-electric vibrator, can optimal design obtain obtaining bigger amplitude with lower voltage driving; And this vibrator is compared with the twin lamella vibrator can obtain smaller volume, compares with electromagnetic vibrator and can obtain the response time faster.The utility model has solved the long and high problem of twin lamella piezoelectric vibrator operating voltage of electromagnetic vibrator response time, for the application of mini vibrator provides a kind of new selection.
Description of drawings
The front view (the single-ended support of laying) of the tubular piezo-electric vibrator embodiment that Fig. 1 provides for the utility model.
Fig. 2 is the vertical view of Fig. 1.
The front view (both-end is laid support) of the another kind of embodiment of the tubular piezo-electric vibrator that Fig. 3 provides for the utility model.
Fig. 4 is the vertical view of Fig. 3.
Among the figure: 1-elastic tubular polyhedral structure; The 2-cradling piece; The 3-fixed part; The 4-piezoelectric element; The 5-installing hole.
Embodiment
Below in conjunction with accompanying drawing principle of the present utility model, structure and embodiment are described further.
The tubular piezo-electric vibrator that the utility model provides comprises the tubulose vibrating body of being made up of elastic matrix and piezoelectric element, and this vibrator also comprises support, and this support contains cradling piece 2 and fixed part 3; Described elastic matrix adopts elastic tubular polyhedral structure 1, and described piezoelectric element 4 sticks on outer surface or the inner surface of elastic tubular polyhedral structure; One end of described cradling piece 2 is connected with elastic tubular polyhedral structure or piezoelectric element, and the other end of cradling piece is connected with fixed part 3.Cradling piece can adopt many, but the number of cradling piece should be smaller or equal to the number of piezoelectric element.One end of described cradling piece is connected with an end or the two ends of tubulose vibrating body, and the link position of cradling piece and tubulose vibrating body is positioned at the edge of elastic tubular polyhedral structure or the edge of piezoelectric element, and the other end of cradling piece is connected with fixed part.
Elastic tubular polyhedral structure outer surface and inner surface all can be made of the plane, or are made of curved surface, also can be made of part plane and part curved surface; The outer surface of elastic tubular polyhedral structure or inner surface can also all be made of curved surface, but its outer surface and inner surface can not be curved surface simultaneously.The number of planes of elastic tubular polyhedral structure outer surface should be at least 2.
Fig. 1, Fig. 2 have provided the structural representation of embodiment of the tubular piezo-electric vibrator that the utility model provides, the inner surface of elastic tubular polyhedral structure 1 is curved surface, and outer surface is hexahedron, comprising two curved surfaces, four planes, a bonding piezoelectric element 4 on each plane.One end of cradling piece is connected with an end of tubulose vibrating body, and the other end is connected with fixed part respectively, namely only lays support at an end of tubulose vibrating body; Be provided with installing hole 5 at fixed part 3, the concrete size of each parts can based on the actual application requirements frequency and magnitude determinations be determined.The mode of vibration output can be exported vibration with extraneous the contact by the surface of elastic tubular polyhedral structure; Perhaps the fixed part of support is exported vibration with extraneous the contact.
Fig. 3, Fig. 4 are another kind of embodiment of the present utility model, adopt both-end to lay support.In the present embodiment, the inner surface of elastic tubular polyhedral structure 1 is circular-arc, and outer surface is hexahedron, comprising two cambered surfaces, and four planes.A bonding piezoelectric element 4 on each plane.Two pairs of cradling pieces lay respectively at the two ends of tubulose vibrating body; The link position of cradling piece and tubulose vibrating body is positioned at the edge of elastic tubular polyhedral structure, and the other end is connected with fixed part respectively.The mode of vibration output can be exported vibration with extraneous the contact by the surface of elastic tubular polyhedral structure; Perhaps the fixed part of support is exported vibration with extraneous the contact.
Claims (5)
1. a tubular piezo-electric vibrator comprises the tubulose vibrating body of being made up of elastic matrix and piezoelectric element, and it is characterized in that: this vibrator also comprises support, and this support contains cradling piece (2) and fixed part (3); Described elastic matrix adopts the elastic tubular polyhedral structure, and described piezoelectric element sticks on outer surface or the inner surface of elastic tubular polyhedral structure; One end of described cradling piece is connected with elastic tubular polyhedral structure or piezoelectric element, and the other end of cradling piece is connected with fixed part (3).
2. a kind of tubular piezo-electric vibrator as claimed in claim 1, it is characterized in that: the outer surface of elastic tubular polyhedral structure is made of a plurality of planes, or curved surface constitutes, or constituted by part plane and part curved surface, the inner surface of elastic tubular polyhedral structure is made of a plurality of planes, or constituted by part plane and part curved surface, or constituted by curved surface; Described piezoelectric element (4) places on the plane of outer surface of elastic tubular polyhedral structure or places on the plane of tubulose polyhedral structure inner surface.
3. a kind of tubular piezo-electric vibrator as claimed in claim 1, it is characterized in that: an end of described cradling piece is connected with an end or the two ends of tubulose vibrating body, the link position of cradling piece and tubulose vibrating body is positioned at the edge of elastic tubular polyhedral structure or the edge of piezoelectric element, and the other end of cradling piece is connected with fixed part (3).
4. a kind of tubular piezo-electric vibrator as claimed in claim 1, it is characterized in that: the number of described cradling piece is smaller or equal to the number of piezoelectric element.
5. as the described a kind of tubular piezo-electric vibrator of the arbitrary claim of claim 1～4, it is characterized in that: the number of planes of described elastic tubular polyhedral structure outer surface is at least 2; The number of planes of described elastic tubular polyhedral structure inner surface is at least 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320070344 CN203193542U (en) | 2013-02-06 | 2013-02-06 | Tubular piezoelectric vibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320070344 CN203193542U (en) | 2013-02-06 | 2013-02-06 | Tubular piezoelectric vibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203193542U true CN203193542U (en) | 2013-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320070344 Expired - Fee Related CN203193542U (en) | 2013-02-06 | 2013-02-06 | Tubular piezoelectric vibrator |
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| Country | Link |
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| CN (1) | CN203193542U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107734A (en) * | 2013-02-06 | 2013-05-15 | 清华大学 | Tubular piezoelectric vibrator |
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2013
- 2013-02-06 CN CN 201320070344 patent/CN203193542U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107734A (en) * | 2013-02-06 | 2013-05-15 | 清华大学 | Tubular piezoelectric vibrator |
| CN103107734B (en) * | 2013-02-06 | 2015-05-20 | 清华大学 | Tubular piezoelectric vibrator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20160206 |