CN100553103C - A kind of piezoelectric motor - Google Patents
A kind of piezoelectric motor Download PDFInfo
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- CN100553103C CN100553103C CNB2006100120047A CN200610012004A CN100553103C CN 100553103 C CN100553103 C CN 100553103C CN B2006100120047 A CNB2006100120047 A CN B2006100120047A CN 200610012004 A CN200610012004 A CN 200610012004A CN 100553103 C CN100553103 C CN 100553103C
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- piezoelectric ceramic
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- axle
- stator
- piezoelectric
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Abstract
A kind of piezoelectric motor belongs to the piezoelectric actuator technical field, comprises rotor (001), deep groove ball bearing (002), piezoelectric ceramic twin lamella (003), stator (004), spring (005), nut (007), axle (008), frame (006); Rotor (001) is installed on the end of axle (008) by deep groove ball bearing (002); One end of piezoelectric ceramic twin lamella (003) is fixed on the stator (004), and the other end contacts with rotor (001) by contact zone (Q); Stator (004) is installed on the axle (8) by hole (010) interference fits, and frame (006) supports whole motor by nut (007).Apply driving voltage for the piezoelectric ceramic twin lamella, the twin lamella vibration drives rotor rotation, output speed and torque by frictional force and inertia force.The present invention is simple in structure, installation is easy, and cost is low and can realize miniaturization.
Description
Technical field
The present invention relates to a kind of piezoelectric motor, belong to the piezoelectric actuator technical field.
Background technology
Fields such as the piezoelectric motor that the present invention relates to is used in mainly that camera automatic focus, vehicle head backrest are regulated automatically, the automatic adjusting of video camera circular scanning campaign, CRT monitor high voltage potential meter, platen, robot, medicine equipment, space flight and aviation, office automation.
A kind of piezoelectric motor such as Fig. 1 are disclosed among the Chinese patent CN1407706A of Asulab S.A's application.This motor comprises a stator 2; Rotor 20 can be at one perpendicular to rotatablely moving through Pdm in the intermediary movements plane of rotor center; Connector 8 is arranged between stator and the rotor, is used to drive rotor; Piezo-electric device 12 can be subjected to electric excitation, to apply a kind of vibration on connector; Transmission device 40 is delivered to affiliated vibration on the rotor from connector, to drive rotor around axis X 1 rotation; Holding device 44 is used for rotor is remained on connector; Rotor is placed on the stator.Connector is arranged to freely round how much rotations through its center, connector by supports support on stator, the shape of strutting piece is suitable for the vibration of the each point P in the contact area of connector and rotor is transformed into the oval basically motion forward or backward that is substantially perpendicular to rotor plane, make rotor to drive front and back, this elliptic motion can drive the rotor rotation.In the half period of the pumping signal of piezo-electric device, the center of connector and periphery are to be out of shape in the same way or reversal deformation has determined being rotated in the forward of rotor or reverse rotation.This piezoelectric motor is last the one-period of electric excitation signal, supporting leg moves downward dish, turn back to its initial position, the motion downwards this and backward of terminal pad is to take place under the situation that does not almost have frictional force between dish and the rotor, has prevented the danger that rotor moves backward.This piezoelectric motor can be realized two-way rotation, but structure is quite complicated.
Summary of the invention
The invention provides a kind of simple in structure, can export an effective driving torque, the piezoelectric motor of low-cost and Miniaturizable, this piezoelectric motor can move on two directions.
A kind of piezoelectric motor, this motor comprises:
Spring, spring are between stator and rotor and be enclosed within on the axle, guarantee that piezoelectric ceramic twin lamella and rotor have certain contact force;
Rotor, rotor are installed in by deep groove ball bearing on the end of axle, can rotatablely move in a plane perpendicular to how much rotations of process rotor center;
Deep groove ball bearing is isolated rotor rotor and nonrotational axon;
The piezoelectric ceramic twin lamella, the present invention has 3 piezoelectric ceramic twin lamellas at least, drives rotor when the piezoelectric ceramic twin lamella is subjected to electric excitation; Output speed and torque that the piezoelectric ceramic twin lamella too much produces are big, but loss and wearing and tearing are also big; The piezoelectric ceramic twin lamella is less than 3, and then output speed of Chan Shenging and torque are little;
Stator, stator are used for fixing the piezoelectric ceramic twin lamella;
Frame works the whole motor effect of supporting;
Nut cooperates fixed axis with frame;
Axle is installed stator, rotor, spring; Spring housing is on axle;
Rotor is installed on the end of axle by deep groove ball bearing; At least 3 piezoelectric ceramic twin lamellas, an end of every piezoelectric ceramic twin lamella is fixed on the stator, and the other end contacts with rotor, and keeps the end face and the rotor of piezoelectric ceramic twin lamella that certain contact force is arranged by the spring that is enclosed between stator and rotor on the axle; Stator center has a hole, and by this hole, stator is installed on the axle; Spring housing is on axle; Screwed hole on nut, the axle on screw thread, the frame is used, and is used for fixing axle and parts on shaft---be interference fit between bearing and axle, bearing and the rotor, stator with spool between to cooperate be interference fits, with the assurance stator axial displacement can be arranged; By adjusting nut compression spring, regulate the contact force between piezoelectric ceramic twin lamella and the rotor.Turning to by regulating the making alive direction of motor controlled, and motor speed can be regulated by adjusting making alive size, pressurization frequency.
When applying driving voltage for the piezoelectric ceramic twin lamella, the twin lamella vibration drives rotor rotation, output speed and torque by frictional force and inertia force.
The invention reside in and provide one simple in structure, can two-wayly rotate, rotating speed adjustable, the piezoelectric motor of big output torque, low-cost and Miniaturizable arranged.Piezoelectric motor of the present invention with Asulab S.A invention piezoelectric motor compare, electric machine structure of the present invention is simple, install easily, cost is low and can realize miniaturization.
Description of drawings
The piezoelectric motor schematic diagram of the Chinese patent CN1407706A of Fig. 1 Asulab S.A application.
Fig. 2 is a structural representation of the present invention;
Fig. 3 is a rotor structure schematic diagram of the present invention;
Fig. 4 is piezoelectric ceramic twin lamella of the present invention and electrode connection diagram.
Fig. 5 is a stator structure schematic diagram of the present invention;
Fig. 6 is an axle construction schematic diagram of the present invention;
Embodiment
Below in conjunction with accompanying drawing the present invention is described.
Fig. 2 is a structural representation of the present invention, and wherein, 001 is rotor, and 002 is bearing, and 003 is the piezoelectric ceramic twin lamella, and 004 is stator, and 005 is spring, 006 frame, and 007 is nut, 008 is axle.As shown in Figure 1, rotor 001 is installed on the end 009 of axle 008 by deep groove ball bearing 002; Bonding or screw-driving evenly is fixed on the stator 004 by epoxy resin structural adhesive layer 011 at least 3 piezoelectric ceramic twin lamellas, an end of each sheet piezoelectric ceramic twin lamella 003; The other end of piezoelectric ceramic twin lamella 003 by contact zone Q, contacts with rotor 001, and keeps piezoelectric ceramic twin lamella 003 and rotor 001 that certain contact force is arranged by spring 005; Stator 004 center has a hole 010, and by this hole 010, stator 004 is installed on the axle 008; Spring 005 is enclosed within on the axle 008; Screwed hole 012 on nut 007, the axle on screw thread 013, the frame 006 is used for fixing axle 008 and parts on shaft; Frame 006 can be processed separately according to the application space, also the part of application entity.When the piezoelectric ceramic twin lamella was subjected to a kind of electric excitation, twin lamella one end was fixed on the stator 004, end vibration, and the vibration end face contact with rotor 001 by contact zone Q, by frictional force and 001 rotation of inertia force drive rotor, output speed and torque.
Fig. 3 is a rotor structure schematic diagram of the present invention, can in a plane P dn, rotatablely move perpendicular to how much rotation X1 of process rotor center, and exportable rotatablely moving.As shown in Figure 3, the surfaces of revolution 016 is used for installing bearing, and output can be made the surfaces of revolution on the face of cylinder 015, also can make external gear shape 014 to the surfaces of revolution, rotatablely moves by external toothing output.
Fig. 4 is piezoelectric ceramic double wafer structure of the present invention and electrode connection diagram, form by two piezoelectric ceramic pieces, one deck silver electrode is plated on first piezoelectric ceramic piece 1 and second piezoelectric ceramic piece, 2 surfaces respectively, between two piezoelectric ceramic pieces beryllium-bronze is arranged, from the beryllium-bronze extraction electrode, use epoxide-resin glue bonding between potsherd and the beryllium-bronze respectively.Piezoelectric ceramic twin lamella one end is fixed on the stator, an end cantilever, the piezoelectric ceramic twin lamella structurally adopts series system, on the making alive mode, adopt form in parallel, because the inverse piezoelectric effect of piezoelectric ceramic, potsherd 1 adds forward voltage to be shortened, potsherd 2 adds reverse voltage elongation, the flexural deformation of acting in conjunction cantilever end.
Fig. 5 is a stator structure schematic diagram of the present invention, the number of teeth has the number decision (better more than or equal to three effects) of piezoelectric ceramic twin lamella, the number of teeth is uniform, and keyway 017 is used for fixing the piezoelectric ceramic twin lamella, and stator 004 center has through hole 010 that stator 004 is enclosed within on the axle 008.
Fig. 6 is an axle construction schematic diagram of the present invention, axle 008 is the multidiameter shape, the face of cylinder 020 is used for installing deep groove ball bearing 002, the shaft shoulder 021 is used for location bearing 002, the face of cylinder 022 is used for installing stator 004 and spring 005, screwed hole 012 attaching nut 007 fixed axis 008 and the parts on shaft that screw thread 013 screws on the frame 006.
Claims (4)
1, a kind of piezoelectric motor is characterized in that, this motor comprises rotor (001), deep groove ball bearing (002), piezoelectric ceramic twin lamella (003), stator (004), spring (005), nut (007), axle (008), frame (006);
Rotor (001) is installed in by deep groove ball bearing (002) on the end (009) of axle (008);
Deep groove ball bearing (002) is isolated rotor (001) and axle (008); Between deep groove ball bearing (002) and rotor (001), deep groove ball bearing (002) and the axle (008) is interference fit;
One end of every piezoelectric ceramic twin lamella (003) is fixed on the stator (004), and the other end contacts with rotor (001) by contact zone (Q);
Stator (004) center has a hole (010), is installed on the axle (008) by this hole (010) stator (004) interference fits;
Spring (005) is installed between stator (004) and the frame (006) and is enclosed within on the axle (008);
Screwed hole (012) on screw thread on the axle (013), the frame (006), nut (007) be fixed axis (008) together, by adjusting nut (007) compression spring (005), regulates the contact force between piezoelectric ceramic twin lamella (003) and the rotor (001);
Frame (006) is used to support whole motor.
2, a kind of piezoelectric motor according to claim 1 is characterized in that, 3 piezoelectric ceramic twin lamellas are arranged on the described stator (004).
3, a kind of piezoelectric motor according to claim 1, it is characterized in that, described piezoelectric ceramic twin lamella is made up of first piezoelectric ceramic piece (1) and (2) two piezoelectric ceramic pieces of second piezoelectric ceramic piece, one deck silver electrode is plated on first piezoelectric ceramic piece (1) and second piezoelectric ceramic piece (2) surface respectively, between two piezoelectric ceramic pieces beryllium-bronze is arranged, from the beryllium-bronze extraction electrode, use epoxide-resin glue bonding respectively between two piezoelectric ceramic pieces and the beryllium-bronze;
The piezoelectric ceramic twin lamella structurally adopts series system, adopts form in parallel on the making alive mode.
4, a kind of piezoelectric motor according to claim 1 is characterized in that, described axle (008) is the multidiameter shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100120047A CN100553103C (en) | 2006-05-26 | 2006-05-26 | A kind of piezoelectric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100120047A CN100553103C (en) | 2006-05-26 | 2006-05-26 | A kind of piezoelectric motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1852016A CN1852016A (en) | 2006-10-25 |
| CN100553103C true CN100553103C (en) | 2009-10-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100120047A Expired - Fee Related CN100553103C (en) | 2006-05-26 | 2006-05-26 | A kind of piezoelectric motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN100553103C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101350576B (en) * | 2008-09-05 | 2011-06-29 | 清华大学 | Piezoelectric rotary driver |
| JP2010246277A (en) * | 2009-04-07 | 2010-10-28 | Shicoh Engineering Co Ltd | Linear drive unit |
| CN103066882B (en) * | 2011-10-21 | 2015-07-15 | 郑州航空工业管理学院 | Piezoelectric ceramic driver driving in unsymmetrical voltage mode |
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2006
- 2006-05-26 CN CNB2006100120047A patent/CN100553103C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1852016A (en) | 2006-10-25 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20091021 Termination date: 20150526 |
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| EXPY | Termination of patent right or utility model |