CN205681331U - A kind of piezoelectric crystal chip driver - Google Patents
A kind of piezoelectric crystal chip driver Download PDFInfo
- Publication number
- CN205681331U CN205681331U CN201620625994.0U CN201620625994U CN205681331U CN 205681331 U CN205681331 U CN 205681331U CN 201620625994 U CN201620625994 U CN 201620625994U CN 205681331 U CN205681331 U CN 205681331U
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- piezoelectric
- driver element
- piezoelectric vibrator
- force
- applying piece
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The utility model relates to a kind of piezoelectric crystal chip driver, belongs to Piezoelectric Driving and control field.Piezoelectric vibrator two ends are fixed on the left and right wallboard of main body, centre is fixed on force-applying piece contiguous block, and force-applying piece guide post is placed in the pilot hole of left wall plate；Piezoelectric vibrator becomes curved surface before installing after flat construction, installation, and piezoelectric chip is in recess in curved surface；The contiguous block left and right sides being in force-applying piece on piezoelectric vibrator respectively constitutes driver element I and II, and its driving voltage phase difference is 180 degree；When one driver element is by voltage effect elongation maximum, another driver element is reached maximum by voltage effect shortening amount, and in two driver elements, the deflection of piezoelectric vibrator mutually restricts.Characteristic and advantage: construct telescopic piezoelectric actuator by installation method, preparation method and technique are simple, low cost；Piezoelectric chip only compression chord and two driver element deflections mutually restrict, and reliability is high；Easily pass through piezoelectric vibrator quantity and physical dimension adjusts and obtains required driving force and displacement.
Description
Technical field
The utility model belongs to Piezoelectric Driving and control technical field, is specifically related to a kind of piezoelectric crystal chip driver.
Background technology
Piezoelectric ceramics has simple in construction, and response is fast, without features such as electromagnetic interference, energy consumption are low, easily controllable, in aviation boat
My god, machinery, optical engineering, biological medicine and fluid drive and be all widely used with the field such as control.At present, with piezoelectric ceramics
Realize that power and straight-line displacement output are mainly with the piezoelectric actuator controlling for power part: stack driving based on dilatation
Device and based on diastrophic crystal chip driver.The former driving force is big, and dilatation amount is extremely small, and cost is high；The latter
Bending deformation quantity is relatively large, low cost, but driving force is extremely small, and double-deformation during work, bears and alternately change
Compression and tension, easily make piezoelectric because tension is excessive and broken, reliability is low during moderate finite deformation.Obviously, existing pressure
Electric drive all has some limitations in application, driving force and the Piezoelectric Driving that displacement is moderate, low cost, reliability are high
Device is still that what a lot of field was badly in need of.
Content of the invention
The limitation in application for existing piezoelectric stack and piezoelectric crystal chip driver, the utility model proposes a kind of pressure
Electricity crystal chip driver.The utility model adopted implementation scheme is that main body is provided with left wall plate and right wallboard, and left wall plate is provided with
Left boss and pilot hole, right wallboard is provided with right boss；Piezoelectric vibrator is formed by metal substrate and piezoelectric chip bonding；Piezoelectricity shakes
One end of the metal substrate of son is fixed on left boss through screw and briquetting, and the other end is fixed on right boss through screw and briquetting
On, centre is fixed on the contiguous block of force-applying piece through screw and briquetting, and the guide post of force-applying piece is placed in the pilot hole on left wall plate
In；Piezoelectric vibrator is installed under the nature before main body be flat construction, and the length of metal substrate more than left wall plate and
Distance between right wallboard；Piezoelectric vibrator becomes curved surface after being installed to main body, and piezoelectric chip is in the interior recess of curved surface, holds
Compression chord, metal substrate is at the evagination of curved surface, bears tension；It is in the contiguous block of force-applying piece on two piezoelectric vibrators
The part in left side constitutes driver element I, the part on right side constitutes driver element II, the driving of driver element I and driver element II
Voltage phase difference is 180 degree.
In the utility model, by the method for assembling, straight piezoelectric vibrator is become flexure type piezoelectric vibrator, thus
Form telescopic piezoelectric actuator；In the course of work, when driver element I is extended by voltage effect, driver element II is by voltage effect
Shortening, the guide post of force-applying piece moves right；After voltage commutation, when driver element I is shortened by voltage effect, driver element II is subject to
Voltage effect extends, and the guide post of force-applying piece is to left movement；Driving voltage continuous print defines guide post when replacing change
Reciprocal telescopic vibrates.When piezoelectric vibrator in one driver element is reached maximum by voltage effect elongation, i.e. reaches straightened condition,
In another driver element, the shortening amount of piezoelectric vibrator reaches maximum, and in i.e. two driver elements, the deflection of piezoelectric vibrator is mutual
Restriction.
Advantage and characteristic: 1. straight piezoelectric vibrator is become flexure type piezoelectric vibrator by the method by installing, and by executing
The telescopic piezoelectric actuator of power bar composition, preparation method and technique are simple, low cost；2. piezoelectric chip is only operated in compression shape
Under state and the deflection of two driver elements of driver mutually restricts, therefore reliability is high；3. it is easy to the number by piezoelectric vibrator
Amount and physical dimension adjust the driving force required for obtaining and output displacement, i.e. driving force just becomes with piezoelectric vibrator quantity and width
Ratio, output displacement is directly proportional to the length of piezoelectric vibrator.
Brief description
Fig. 1 is the structural principle sketch of driver in one preferred embodiment of the utility model；
Fig. 2 is the assembling process schematic of Fig. 1；
Fig. 3 is the structure chart of main body in one preferred embodiment of the utility model；
Fig. 4 is the phase diagram of two drive unit drives voltages of the utility model.
Detailed description of the invention
Main body a is provided with left wall plate a1 and right wallboard a3, and left wall plate a1 is provided with left boss a2 and pilot hole a5, right wallboard
A3 is provided with right boss a4；Piezoelectric vibrator b is formed by metal substrate b1 and piezoelectric chip b2 bonding；The Metal Substrate of piezoelectric vibrator b
One end of plate b1 is fixed on left boss a2 through screw and briquetting d, and the other end is fixed on right boss a4 through screw and briquetting d,
Centre is fixed on the contiguous block c2 of force-applying piece c through screw and briquetting d, and the guide post c1 of force-applying piece c is placed on left wall plate a1
In pilot hole a5；Piezoelectric vibrator b is installed under the nature before main body a be flat construction, and length A of metal substrate b1
More than distance B between left wall plate a1 and right wallboard a3；Piezoelectric vibrator b becomes curved surface, and piezoelectric chip after being installed to main body a
B2 is in the interior recess of curved surface, bears compression, and metal substrate b1 is at the evagination of curved surface, bears tension；Piezoelectric vibrator b
On be in that the part on the left of the contiguous block c2 of force-applying piece c constitutes driver element I, the part on right side constitutes driver element II, drive
The driving voltage phase difference of unit I and driver element II is 180 degree.
In the course of work, when driver element I is made piezoelectric vibrator b extend by voltage effect, driver element II is contracted by voltage effect
Short, the guide post c1 of force-applying piece c moves right；After voltage commutation, when driver element I is shortened by voltage effect, driver element II is subject to
Voltage effect makes piezoelectric vibrator b extend, and the guide post c1 of force-applying piece c is to left movement；When driving voltage continuous print replaces change
Define the reciprocal telescopic vibration of guide post c1.Piezoelectric vibrator in one driver element by voltage effect elongation reach maximum,
When i.e. reaching straightened condition, in another driver element, the shortening amount of piezoelectric vibrator reaches maximum, presses in i.e. two driver elements
The deflection of electric tachometer indicator mutually restricts.
Claims (1)
1. a piezoelectric crystal chip driver, it is characterised in that: main body is provided with left wall plate and right wallboard, and left wall plate is provided with left convex
Platform and pilot hole, right wallboard is provided with right boss；Piezoelectric vibrator is formed by metal substrate and piezoelectric chip bonding；Piezoelectric vibrator
One end of metal substrate is fixed on left boss through screw and briquetting, and the other end is fixed on right boss through screw and briquetting, in
Between be fixed on the contiguous block of force-applying piece through screw and briquetting, the guide post of force-applying piece is placed in the pilot hole on left wall plate；Pressure
Electric tachometer indicator is installed under the nature before main body be flat construction, and the length of metal substrate is more than left wall plate and right wallboard
Between distance；Piezoelectric vibrator becomes curved surface after being installed to main body, and piezoelectric chip is in the interior recess of curved surface, bearing pressure should
Power, metal substrate is at the evagination of curved surface, bears tension；It is on two piezoelectric vibrators on the left of the contiguous block of force-applying piece
Part constitutes driver element I, the part on right side constitutes driver element II, the driving voltage phase of driver element I and driver element II
Potential difference is 180 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620625994.0U CN205681331U (en) | 2016-06-15 | 2016-06-15 | A kind of piezoelectric crystal chip driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620625994.0U CN205681331U (en) | 2016-06-15 | 2016-06-15 | A kind of piezoelectric crystal chip driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205681331U true CN205681331U (en) | 2016-11-09 |
Family
ID=57430650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620625994.0U Expired - Fee Related CN205681331U (en) | 2016-06-15 | 2016-06-15 | A kind of piezoelectric crystal chip driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205681331U (en) |
-
2016
- 2016-06-15 CN CN201620625994.0U patent/CN205681331U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20161109 Termination date: 20170615 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |