CN215222040U - Dual-mode microminiature linear ultrasonic motor - Google Patents
Dual-mode microminiature linear ultrasonic motor Download PDFInfo
- Publication number
- CN215222040U CN215222040U CN202120849419.XU CN202120849419U CN215222040U CN 215222040 U CN215222040 U CN 215222040U CN 202120849419 U CN202120849419 U CN 202120849419U CN 215222040 U CN215222040 U CN 215222040U
- Authority
- CN
- China
- Prior art keywords
- bending
- elastic body
- hollow elastic
- mode
- piezoelectric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005452 bending Methods 0.000 claims abstract description 94
- 230000033001 locomotion Effects 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 abstract description 8
- 230000005284 excitation Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Images
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The utility model relates to a double mode microminiature linear ultrasonic motor, double mode microminiature linear ultrasonic motor include stator, follower and driven element, and wherein the follower is installed on the circular cavity wall of stator with the mode that the self-adaptation is tight in advance, driven element fixed connection at the inner wall of follower. A driving method of a dual-mode microminiature linear ultrasonic motor comprises the following steps: the ultrasonic non-resonance and ultrasonic resonance working modes of the device are realized by controlling the excitation modes of the longitudinal clamping piezoelectric sheet set and the bending driving piezoelectric sheet set on the stator. Has the advantages that: the device has compact structure, high motion precision and low cost, and can be used for precision driving in limited application space; by utilizing the corresponding driving method, two working modes are provided, the requirements of multiple working conditions can be better met, and the camera shooting driving method has wide application prospect in built-in camera shooting driving directions of micro equipment such as mobile phones, micro aircrafts, micro submersible and the like.
Description
Technical Field
The utility model relates to an accurate drive technical field, in particular to double mode microminiature straight line ultrasonic motor, it provides two kinds of mode of quasi-static and supersound, can be used to as the drive of making a video recording in the micro-device such as cell-phone, micro-aircraft, little submersible, realizes functions such as the big multiplying power of camera zooms, quick auto focus.
Background
The ultrasonic motor is a precise driving device with the characteristics of high precision, small volume, quick response, no electromagnetic interference, no noise, high output speed, large output thrust/torque and the like, and plays a vital role in the fields of optics, precise instruments, aerospace engineering, biological cell engineering and the like. Because of the above advantages, it has a wide application prospect in optical zooming of a built-in camera of a micro precision device, however, the existing ultrasonic motor cannot be effectively used as an image pickup drive in a micro precision device such as a mobile phone, for example, like the thin traveling wave ultrasonic motor mentioned in the patent with the application number of 01127037.3, although the structure is simple and the thickness is thin, the output of the rotary ultrasonic motor is a moment, which is not suitable for some application occasions requiring linear positioning or driving, and the optical zooming of the camera cannot be realized. While a linear Ultrasonic Motor similar to that mentioned in IEEE Transactions on Industrial Electronics at volume 68, 734 (A Compact rotor-Type Ultrasonic Motor With Ultrasonic Resolution Design and Performance Evaluation) in 2021 has excellent output Performance, size problems limit its application in small devices. In addition, other miniature linear ultrasonic motors have the problem that a driven part is difficult to be effectively connected with a driven element such as a camera lens, and the linear ultrasonic motors are difficult to be integrated into a miniature device. In addition, most of the existing miniature linear ultrasonic motors only work under a resonance working mode, and the single working mode also reduces the adaptability and flexibility of the application. These problems greatly limit the practical application expansion of the miniature ultrasonic motor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a double mode microminiature straight line supersound motor has solved the above-mentioned problem that prior art exists, can be with small-size driven element such as little camera lens integrated together effectively to utilize its drive method, can switch two kinds of mode of supersound off-resonance and supersound resonance, have potential application prospect in fields such as optics and precision instruments, micro robot, biology and cell engineering.
The above object of the utility model is realized through following technical scheme:
a dual-mode microminiature linear ultrasonic motor comprises a stator 1, a driven part 2 and a driven element 3; the driven part 2 is in an open ring shape, has certain elasticity, the outer wall of the driven part is contacted with the hollow elastic bodies 1-3 in the stator 1, and is arranged in the hollow elastic bodies 1-3 in a self-adaptive pre-tightening way; the driven element 3 is fixedly connected with the inner wall of the hollow elastic body 1-3.
The stator comprises a longitudinal clamping piezoelectric plate group 1-1, a bending driving piezoelectric plate group 1-2 and a hollow elastic body 1-3.
The hollow elastic body 1-3 comprises a thin-wall end a1-3-1-1, a thin-wall end b1-3-1-2, a thick-wall end a1-3-2-1, a thick-wall end b1-3-2-2, a mounting hole a1-3-3-1, a mounting hole b1-3-3-2, a mounting hole c1-3-3-3 and a mounting hole d 1-3-3-4; the hollow elastic bodies 1-3 are arranged in a rectangular shape at the outer part and a circular hollow shape at the inner part.
The longitudinal clamping piezoelectric plate group 1-1 consists of a clamping piezoelectric plate a1-1-1 and a clamping piezoelectric plate b 1-1-2; the clamping piezoelectric sheets a1-1-1 and the clamping piezoelectric sheets b1-1-2 are bonded to two ends of the hollow elastic body 1-3 in a manner of being symmetrically distributed along the width direction y; the longitudinal clamping piezoelectric plate group 1-1 is used for exciting the longitudinal movement of the hollow elastic body 1-3 to clamp the driven piece 2.
The bending driving piezoelectric sheet group 1-2 consists of a bending piezoelectric sheet a1-2-1, a bending piezoelectric sheet b1-2-2, a bending piezoelectric sheet c1-2-3 and a bending piezoelectric sheet d 1-2-4; the bending piezoelectric sheet a1-2-1 and the bending piezoelectric sheet b1-2-2 are bonded to the upper surface and the lower surface of the thick-wall end a1-3-2-1 in the hollow elastic body 1-3 in a symmetrical distribution mode along the thickness direction z; the bending piezoelectric sheet c1-2-3 and the bending piezoelectric sheet d1-2-4 are bonded to the upper surface and the lower surface of the thick wall end b1-3-2-2 in the hollow elastic body 1-3 in a symmetrical distribution mode along the thickness direction z; the bending driving piezoelectric plate group 1-2 is used for exciting the bending motion of the hollow elastic body 1-3 to drive the driven piece 2.
The utility model provides a pair of double mode microminiature linear ultrasonic motor, its drive method is as follows:
by regulating and controlling excitation signals of the longitudinal clamping piezoelectric plate group 1-1 and the bending driving piezoelectric plate group 1-2, the dual-mode microminiature linear ultrasonic motor can realize two working modes of ultrasonic non-resonance and ultrasonic resonance; the driving method of the ultrasonic non-resonance working mode comprises the following steps:
a) simultaneously applying sinusoidal signals with frequencies exceeding 20KHz and not on the natural frequency of the hollow elastic body 1-3 to the longitudinal clamping piezoelectric plate group 1-1 and the bending driving piezoelectric plate group 1-2, wherein the phase of the signal of the longitudinal clamping piezoelectric plate group 1-1 is advanced by pi/2 than that of the signal of the bending driving piezoelectric plate group 1-2, so that the clamping piezoelectric plate a1-1-1 and the clamping piezoelectric plate b1-1-2 are shortened upwards along the width direction y, and the driven member 2 is clamped by the thick wall end a1-3-2-1 and the thick wall end b1-3-2-2 of the hollow elastic body 1-3; when clamping is carried out, the bending piezoelectric sheet a1-2-1 and the bending piezoelectric sheet c1-2-3 extend upwards along the width direction y, the bending piezoelectric sheet b1-2-2 and the bending piezoelectric sheet d1-2-4 shorten upwards along the width direction y, so that the thick-wall end a1-3-2-1 and the thick-wall end b 1-3-2-2-2 of the hollow elastic body 1-3 bend towards the z axis, the longitudinal clamping piezoelectric sheet group 1-1 is matched with the bending driving piezoelectric sheet group 1-2, the hollow elastic body 1-3 generates clockwise elliptic motion on a contact surface with the driven member 2, and the hollow elastic body 1-3 drives the driven member 2 to do linear motion along the z axis in the positive direction under the action of friction force;
b) simultaneously applying sinusoidal signals with frequencies exceeding 20KHz and not at the natural frequency of the hollow elastic body 1-3 to the longitudinal clamping piezoelectric plate group 1-1 and the bending driving piezoelectric plate group 1-2, wherein the phase of the signal of the longitudinal clamping piezoelectric plate group 1-1 is lagging pi/2 than that of the signal of the bending driving piezoelectric plate group 1-2, so that the clamping piezoelectric plate a1-1-1 and the clamping piezoelectric plate b1-1-2 are shortened in the width direction y, and the driven member 2 is clamped by the thick wall end a1-3-2-1 and the thick wall end b1-3-2-2 of the hollow elastic body 1-3; when clamping is carried out, the bending piezoelectric sheet a1-2-1 and the bending piezoelectric sheet c1-2-3 extend upwards along the width direction y, the bending piezoelectric sheet b1-2-2 and the bending piezoelectric sheet d1-2-4 shorten upwards along the width direction y, so that the thick-wall end a1-3-2-1 and the thick-wall end b 1-3-2-2-2 of the hollow elastic body 1-3 bend towards the z axis, the longitudinal clamping piezoelectric sheet group 1-1 is matched with the bending driving piezoelectric sheet group 1-2, the hollow elastic body 1-3 generates anticlockwise elliptical motion on a contact surface with the driven piece 2, and the hollow elastic body 1-3 drives the driven piece 2 to do linear motion along the z axis under the action of friction force;
the ultrasonic resonance working mode comprises the following steps:
c) applying a sinusoidal signal with the frequency exceeding 20KHz and the longitudinal resonance frequency of the hollow elastic body 1-3 to the longitudinal clamping piezoelectric sheet group 1-1 to excite the longitudinal vibration mode of the hollow elastic body 1-3, so that the hollow elastic body 1-3 clamps the driven part 2; simultaneously, a sinusoidal signal with the frequency exceeding 20KHz and the bending resonance frequency of the hollow elastic body 1-3 is applied to the bending driving piezoelectric sheet group 1-2 so as to excite the bending vibration mode of the hollow elastic body 1-3; the phase of a signal applied to the bending driving piezoelectric sheet group 1-2 is advanced by pi/2 compared with that of a signal applied to the longitudinal clamping piezoelectric sheet group 1-1, the longitudinal clamping piezoelectric sheet group 1-1 is matched with the bending driving piezoelectric sheet group 1-2, so that the hollow elastic body 1-3 generates clockwise elliptical motion on a contact surface with the driven member 2, and under the action of friction force, the hollow elastic body 1-3 drives the driven member 2 to do linear motion along the positive direction of a z axis;
d) applying a sinusoidal signal with the frequency exceeding 20KHz and the longitudinal resonance frequency of the hollow elastic body 1-3 to the longitudinal clamping piezoelectric sheet group 1-1 to excite the longitudinal vibration mode of the hollow elastic body 1-3, so that the hollow elastic body 1-3 clamps the driven part 2; simultaneously, a sinusoidal signal with the frequency exceeding 20KHz and the bending resonance frequency of the hollow elastic body 1-3 is applied to the bending driving piezoelectric sheet group 1-2 so as to excite the bending vibration mode of the hollow elastic body 1-3; the phase of a signal applied to the bending driving piezoelectric plate group 1-2 lags pi/2 behind that of a signal applied to the longitudinal clamping piezoelectric plate group 1-1, the longitudinal clamping piezoelectric plate group 1-1 is matched with the bending driving piezoelectric plate group 1-2, so that the hollow elastic body 1-3 generates anticlockwise elliptical motion on a contact surface with the driven member 2, and the hollow elastic body 1-3 drives the driven member 2 to do linear motion along the negative direction of a z axis under the action of friction force.
The beneficial effects of the utility model reside in that: through the utility model provides a pair of double mode microminiature sharp ultrasonic motor can realize being driven the precision drive and the location of component to little camera lens etc. in the limited occasion in application space, can realize drive arrangement and external equipment's effective integration to through the excitation signal of regulation and control vertical clamp pressure piezoelectric stack 1-1 and crooked drive piezoelectric stack 1-2, can make a double mode microminiature sharp ultrasonic motor realize two kinds of mode of supersound off-resonance and supersound resonance, have wide application prospect in fields such as precision machinery and small equipment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate example embodiments of the invention and together with the description serve to explain the invention without limitation.
Fig. 1 is a schematic view of the overall structure of a dual-mode microminiature linear ultrasonic motor according to the present invention;
fig. 2 is a schematic structural view of the stator of the present invention;
FIG. 3 is a schematic structural view of the hollow elastic body of the present invention;
fig. 4 is a schematic view showing the simulation of the ultrasonic off-resonance clamping action of the present invention;
fig. 5 is a schematic view showing the simulation of the bending motion in the ultrasonic off-resonance state according to the present invention;
fig. 6 is a schematic diagram illustrating longitudinal mode shape simulation of the present invention;
fig. 7 is a schematic view illustrating a simulation of bending mode vibration of the present invention;
in the figure: 1. a stator; 1-1, longitudinally clamping a piezoelectric plate group; 1-2, bending the driving piezoelectric sheet set; 1-3, hollow elastomer; 1-1-1, clamping the piezoelectric sheet a; 1-1-2, clamping the piezoelectric sheet b; 1-2-1, bending the piezoelectric sheet a; 1-2-2, bending the piezoelectric sheet b; 1-2-3, bending the piezoelectric sheet c; 1-2-4, bending the piezoelectric sheet d; 1-3, hollow elastomer; 1-3-1-1, thin wall end a; 1-3-1-2, thin wall end b; 1-3-2-1, thick-walled end a; 1-3-2-2, thick wall end b; 1-3-3-1, mounting holes a; 1-3-3-2 and a mounting hole b; 1-3-3-3, mounting hole c; 1-3-3-4, mounting hole d; 2. a driven member; 3. a driven element.
Detailed Description
The details of the present invention and its embodiments are further described below with reference to the accompanying drawings.
Referring to fig. 1 to 3, the dual-mode micro linear ultrasonic motor of the present invention comprises a stator 1, a driven member 2 and a driven element 3; the driven part 2 is in an open ring shape, has certain elasticity, the outer wall of the driven part is contacted with the hollow elastic bodies 1-3 in the stator 1, and is arranged in the hollow elastic bodies 1-3 in a self-adaptive pre-tightening way; the driven element 3 is fixedly connected with the inner wall of the hollow elastic body 1-3.
The stator comprises a longitudinal clamping piezoelectric plate group 1-1, a bending driving piezoelectric plate group 1-2 and a hollow elastic body 1-3.
The hollow elastic body 1-3 comprises a thin-wall end a1-3-1-1, a thin-wall end b1-3-1-2, a thick-wall end a1-3-2-1, a thick-wall end b1-3-2-2, a mounting hole a1-3-3-1, a mounting hole b1-3-3-2, a mounting hole c1-3-3-3 and a mounting hole d 1-3-3-4; the hollow elastic bodies 1-3 are arranged in a rectangular shape at the outer part and a circular hollow shape at the inner part.
The longitudinal clamping piezoelectric plate group 1-1 consists of a clamping piezoelectric plate a1-1-1 and a clamping piezoelectric plate b 1-1-2; the clamping piezoelectric sheets a1-1-1 and the clamping piezoelectric sheets b1-1-2 are bonded to two ends of the hollow elastic body 1-3 in a manner of being symmetrically distributed along the width direction y; the longitudinal clamping piezoelectric plate group 1-1 is used for exciting the longitudinal movement of the hollow elastic body 1-3 to clamp the driven piece 2.
The bending driving piezoelectric sheet group 1-2 consists of a bending piezoelectric sheet a1-2-1, a bending piezoelectric sheet b1-2-2, a bending piezoelectric sheet c1-2-3 and a bending piezoelectric sheet d 1-2-4; the bending piezoelectric sheet a1-2-1 and the bending piezoelectric sheet b1-2-2 are bonded to the upper surface and the lower surface of the thick-wall end a1-3-2-1 in the hollow elastic body 1-3 in a symmetrical distribution mode along the thickness direction z; the bending piezoelectric sheet c1-2-3 and the bending piezoelectric sheet d1-2-4 are bonded to the upper surface and the lower surface of the thick wall end b1-3-2-2 in the hollow elastic body 1-3 in a symmetrical distribution mode along the thickness direction z; the bending driving piezoelectric plate group 1-2 is used for exciting the bending motion of the hollow elastic body 1-3 to drive the driven piece 2.
Referring to fig. 4 and 5, fig. 4 and 5 are respectively a clamping and bending deformation diagram of an effective example of a dual-mode micro-miniature linear ultrasonic motor in an ultrasonic non-resonant working mode, the structural parameters of the effective example are as follows: l is 19mm, w is 18mm, t is 2 mm; under the ultrasonic non-resonance working mode, a driving method of a dual-mode microminiature linear ultrasonic motor comprises the following steps:
a) simultaneously applying sinusoidal signals with frequencies exceeding 20KHz and not on the natural frequency of the hollow elastic body 1-3 to the longitudinal clamping piezoelectric plate group 1-1 and the bending driving piezoelectric plate group 1-2, wherein the phase of the signal of the longitudinal clamping piezoelectric plate group 1-1 is advanced by pi/2 than that of the signal of the bending driving piezoelectric plate group 1-2, so that the clamping piezoelectric plate a1-1-1 and the clamping piezoelectric plate b1-1-2 are shortened upwards along the width direction y, and the driven member 2 is clamped by the thick wall end a1-3-2-1 and the thick wall end b1-3-2-2 of the hollow elastic body 1-3; when clamping is carried out, the bending piezoelectric sheet a1-2-1 and the bending piezoelectric sheet c1-2-3 extend upwards along the width direction y, the bending piezoelectric sheet b1-2-2 and the bending piezoelectric sheet d1-2-4 shorten upwards along the width direction y, so that the thick-wall end a1-3-2-1 and the thick-wall end b 1-3-2-2-2 of the hollow elastic body 1-3 bend towards the z axis, the longitudinal clamping piezoelectric sheet group 1-1 is matched with the bending driving piezoelectric sheet group 1-2, the hollow elastic body 1-3 generates clockwise elliptic motion on a contact surface with the driven member 2, and the hollow elastic body 1-3 drives the driven member 2 to do linear motion along the z axis in the positive direction under the action of friction force;
b) simultaneously applying sinusoidal signals with frequencies exceeding 20KHz and not at the natural frequency of the hollow elastic body 1-3 to the longitudinal clamping piezoelectric plate group 1-1 and the bending driving piezoelectric plate group 1-2, wherein the phase of the signal of the longitudinal clamping piezoelectric plate group 1-1 is lagging pi/2 than that of the signal of the bending driving piezoelectric plate group 1-2, so that the clamping piezoelectric plate a1-1-1 and the clamping piezoelectric plate b1-1-2 are shortened in the width direction y, and the driven member 2 is clamped by the thick wall end a1-3-2-1 and the thick wall end b1-3-2-2 of the hollow elastic body 1-3; when clamping is carried out, the bending piezoelectric sheet a1-2-1 and the bending piezoelectric sheet c1-2-3 extend upwards along the width direction y, the bending piezoelectric sheet b1-2-2 and the bending piezoelectric sheet d1-2-4 shorten upwards along the width direction y, so that the thick-wall end a1-3-2-1 and the thick-wall end b 1-3-2-2-2 of the hollow elastic body 1-3 bend towards the z axis, the longitudinal clamping piezoelectric sheet group 1-1 is matched with the bending driving piezoelectric sheet group 1-2, the hollow elastic body 1-3 generates anticlockwise elliptical motion on a contact surface with the driven piece 2, and the hollow elastic body 1-3 drives the driven piece 2 to do linear motion along the z axis under the action of friction force;
referring to fig. 6 and 7, fig. 6 and 7 are respectively a longitudinal mode vibration diagram and a bending mode vibration diagram of an effective example of the dual-mode micro-miniature linear ultrasonic motor in the ultrasonic resonance working mode, in which a driving method of the dual-mode micro-miniature linear ultrasonic motor comprises the following steps:
c) applying a sinusoidal signal with the frequency exceeding 20KHz and being the fourth-order longitudinal resonance frequency of the hollow elastic body 1-3 to the longitudinal clamping piezoelectric plate group 1-1 to excite the fourth-order longitudinal vibration mode of the hollow elastic body 1-3, so that the thin-wall end a1-3-1-1 and the thin-wall end b1-3-1-2 of the hollow elastic body 1-3 clamp the driven member 2; simultaneously, applying a sinusoidal signal with the frequency exceeding 20KHz and the five-order bending resonance frequency of the hollow elastic body 1-3 to the bending driving piezoelectric sheet group 1-2 so as to excite the five-order bending vibration mode of the hollow elastic body 1-3; the phase of a signal applied to the bending driving piezoelectric sheet group 1-2 is advanced by pi/2 compared with that of a signal applied to the longitudinal clamping piezoelectric sheet group 1-1, the longitudinal clamping piezoelectric sheet group 1-1 is matched with the bending driving piezoelectric sheet group 1-2, so that the hollow elastic body 1-3 generates clockwise elliptical motion on a contact surface with the driven member 2, and under the action of friction force, the hollow elastic body 1-3 drives the driven member 2 to do linear motion along the positive direction of a z axis;
d) applying a sinusoidal signal with the frequency exceeding 20KHz and being the fourth-order longitudinal resonance frequency of the hollow elastic body 1-3 to the longitudinal clamping piezoelectric plate group 1-1 to excite the fourth-order longitudinal vibration mode of the hollow elastic body 1-3, so that the thin-wall end a1-3-1-1 and the thin-wall end b1-3-1-2 of the hollow elastic body 1-3 clamp the driven member 2; simultaneously, applying a sinusoidal signal with the frequency exceeding 20KHz and the five-order bending resonance frequency of the hollow elastic body 1-3 to the bending driving piezoelectric sheet group 1-2 so as to excite the five-order bending vibration mode of the hollow elastic body 1-3; the phase of a signal applied to the bending driving piezoelectric sheet group 1-2 is lagged by pi/2 compared with that of a signal applied to the longitudinal clamping piezoelectric sheet group 1-1, the longitudinal clamping piezoelectric sheet group 1-1 is matched with the bending driving piezoelectric sheet group 1-2, so that the hollow elastic body 1-3 generates anticlockwise elliptical motion on a contact surface with the driven member 2, and the hollow elastic body 1-3 drives the driven member 2 to do linear motion along the negative direction of a z axis under the action of friction force;
the above description is only a preferred example of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made to the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A dual-mode microminiature linear ultrasonic motor is characterized in that: the stator is composed of a stator (1), a driven part (2) and a driven element (3); the driven part (2) is in an open ring shape, has certain elasticity, the outer wall of the driven part is contacted with the hollow elastic body (1-3) in the stator (1), and is arranged in the hollow elastic body (1-3) in a self-adaptive pre-tightening way; the driven element (3) is fixedly connected with the inner wall of the hollow elastic body (1-3).
2. The dual-mode microminiature linear ultrasonic motor of claim 1, wherein: the stator comprises a longitudinal clamping piezoelectric plate group (1-1), a bending driving piezoelectric plate group (1-2) and a hollow elastic body (1-3).
3. The dual-mode microminiature linear ultrasonic motor of claim 1, wherein: the hollow elastic body (1-3) comprises a thin-wall end a (1-3-1-1), a thin-wall end b (1-3-1-2), a thick-wall end a (1-3-2-1), a thick-wall end b (1-3-2-2), a mounting hole a (1-3-3-1), a mounting hole b (1-3-3-2), a mounting hole c (1-3-3-3) and a mounting hole d (1-3-3-4); the hollow elastic bodies (1-3) are arranged in a rectangular shape at the outer part and in a circular shape at the inner part.
4. The dual-mode microminiature linear ultrasonic motor of claim 2, wherein: the longitudinal clamping piezoelectric patch group (1-1) consists of a clamping piezoelectric patch a (1-1-1) and a clamping piezoelectric patch b (1-1-2); the clamping piezoelectric sheets a (1-1-1) and the clamping piezoelectric sheets b (1-1-2) are bonded to two ends of the hollow elastic body (1-3) in a symmetrical distribution mode along the width direction (y direction); the longitudinal clamping piezoelectric plate group (1-1) is used for exciting the longitudinal movement of the hollow elastic body (1-3) to clamp the driven piece (2).
5. The dual-mode microminiature linear ultrasonic motor of claim 2, wherein: the bending driving piezoelectric sheet group (1-2) consists of a bending piezoelectric sheet a (1-2-1), a bending piezoelectric sheet b (1-2-2), a bending piezoelectric sheet c (1-2-3) and a bending piezoelectric sheet d (1-2-4); the bending piezoelectric sheets a (1-2-1) and the bending piezoelectric sheets b (1-2-2) are bonded to the upper surface and the lower surface of the thick-wall end a (1-3-2-1) in the hollow elastic body (1-3) in a symmetrical distribution mode along the thickness direction (z direction); the bending piezoelectric sheets c (1-2-3) and d (1-2-4) are bonded to the upper surface and the lower surface of the thick-wall end b (1-3-2-2) in the hollow elastic body (1-3) in a symmetrical distribution mode along the thickness direction (z direction); the bending driving piezoelectric plate group (1-2) is used for exciting the bending motion of the hollow elastic body (1-3) to drive the driven piece (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120849419.XU CN215222040U (en) | 2021-04-23 | 2021-04-23 | Dual-mode microminiature linear ultrasonic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120849419.XU CN215222040U (en) | 2021-04-23 | 2021-04-23 | Dual-mode microminiature linear ultrasonic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215222040U true CN215222040U (en) | 2021-12-17 |
Family
ID=79450292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120849419.XU Expired - Fee Related CN215222040U (en) | 2021-04-23 | 2021-04-23 | Dual-mode microminiature linear ultrasonic motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215222040U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113037130A (en) * | 2021-04-23 | 2021-06-25 | 吉林大学 | Dual-mode microminiature linear ultrasonic motor and driving method thereof |
-
2021
- 2021-04-23 CN CN202120849419.XU patent/CN215222040U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113037130A (en) * | 2021-04-23 | 2021-06-25 | 吉林大学 | Dual-mode microminiature linear ultrasonic motor and driving method thereof |
| CN113037130B (en) * | 2021-04-23 | 2024-04-19 | 吉林大学 | Dual-mode miniature linear ultrasonic motor and driving method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1959511B1 (en) | A thread driven polyhedron ultrasonic motor | |
| US20060119225A1 (en) | Electroactive polymer motors | |
| CN201075845Y (en) | Screwed cap type ultrasound electric machine | |
| CN103023374A (en) | Inertia type piezoelectric linear motor | |
| EP3553938B1 (en) | Multi-spoke-type ultrasonic motor | |
| EP2216837A1 (en) | Piezoelectric motor | |
| CN215222040U (en) | Dual-mode microminiature linear ultrasonic motor | |
| CN113037130B (en) | Dual-mode miniature linear ultrasonic motor and driving method thereof | |
| CN111854663A (en) | Piezoelectric thread driving type one-dimensional positioning platform | |
| CN111846266A (en) | Novel multi freedom ultrasonic motor's unmanned aerial vehicle camera cloud platform modular structure | |
| CN113193780A (en) | Microminiature two-degree-of-freedom ultrasonic motor and driving method thereof | |
| CN215222041U (en) | Ultra-thin piezoelectric ultrasonic motor for microminiature equipment | |
| CN201398155Y (en) | Linear piezoelectric motor | |
| CN214591205U (en) | Microminiature two-degree-of-freedom ultrasonic motor | |
| CN112994517B (en) | Ultra-thin piezoelectric ultrasonic motor for microminiature equipment and driving method thereof | |
| CN105162354B (en) | Swing type micro machine based on giant magnetostrictive material | |
| KR0138074B1 (en) | Vibration driven actuator | |
| CN113114065B (en) | Longitudinal bending mode compounded piezoelectric ultrasonic motor for micro-device and driving method thereof | |
| CN214429470U (en) | Longitudinal-bending mode composite piezoelectric ultrasonic motor for micro-miniature equipment | |
| CN113671662A (en) | Piezoelectric driven stepless zoom lens module and driving method | |
| CN108063564B (en) | Novel friction type linear piezoelectric driver | |
| CN214591206U (en) | Microminiature ultrasonic motor based on piezoelectric stack drive | |
| KR20100049248A (en) | Vibrator for ultrasonic motor | |
| KR100759075B1 (en) | Apparatus for actuator using piezoelectric material | |
| JP2014150713A (en) | Linear drive unit, camera device and electronic apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20211217 |