CN100367650C - Micro supersonic motor device using magnetic pressure - Google Patents
Micro supersonic motor device using magnetic pressure Download PDFInfo
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- CN100367650C CN100367650C CNB2004100802812A CN200410080281A CN100367650C CN 100367650 C CN100367650 C CN 100367650C CN B2004100802812 A CNB2004100802812 A CN B2004100802812A CN 200410080281 A CN200410080281 A CN 200410080281A CN 100367650 C CN100367650 C CN 100367650C
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- rotor
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- magnetic
- pressure
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- 239000000919 ceramic Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000011159 matrix material Substances 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 239000000696 magnetic material Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The present invention relates to a micro supersonic motor device using magnetic pressure, which belongs to the field of ultrasonic application. The device comprises a stator for exciting ultrasonic vibration, a rotor and a device for providing pre-pressure between the rotor and the stator. The stator is composed of a piezoelectric ceramic element for exciting the vibration and a matching block, and the matching block is connected with the piezoelectric ceramic element and is made of a material which can generate magnetic attractive force with a magnet. The rotor is composed of a basal body which is not magnetizable and a connected magnet, wherein the magnetic force provided by the magnet can sufficiently bear the self weight of the rotor and can provide pre-pressure between the stator and the rotor so as to cause the rotor to rotate. The ultrasonic motor has the advantages of simple structure, simple manufacture and easy miniaturization. In addition, a rotor structure is easy in use. The present invention has wide application prospects in the fields of biology, medical care, micro machines, etc.
Description
Technical field
The invention belongs to the applications of ultrasound field, particularly a kind of ultrasonic motor structural design of microminiaturization.
Background technology
Piezoelectric ultrasound motor is an inverse piezoelectric effect of utilizing piezoelectric, the driving mechanism of taking specific structure to make, and it generally is made of functional parts such as stator, rotor and pre-pressure mechanisms.It utilizes the inverse piezoelectric effect of piezoelectric ceramic, produces ultrasonic vibration at stator surface, and by the frictional force drives rotor motion between stator and the rotor.Ultrasonic motor has the following characteristics that are better than the common electrical magnetic motor:
1, the slow-speed of revolution, big torque do not need reducing gear can directly drive load.
2, volume is little, structure is flexible, and power to volume ratio is 3-10 a times of electromagnetic motor.
3, starting stops response soon, and the response time is less than 1 millisecond.
4, do not produce electromagnetic interference, be not subjected to electromagnetic interference yet.
5, self-sustaining moment is arranged, gearless gap, but precision positioning.
6, move quiet noiseless.
The flexural vibration mode ultrasonic motor is a kind of of ultrasonic motor, other ultrasonic motor is fairly simple relatively for its structure, same mainly by the stator that encourages ultrasonic vibration, rotor/the axle of output torque and the compositions such as pre-pressure mechanism that pressurize to rotor, said stator mainly is made of the piezo ceramic element and the match block of excited vibration again.The flexural vibration mode ultrasonic motor is divided into piezoelectric patches CD-ROM drive motor, piezo tube CD-ROM drive motor according to the mode of the crooked yawing of excitation and the shape of piezo ceramic element again simultaneously.Their transmission principle is all identical with driving mechanism, as shown in Figure 1.Stator is in the mode of oscillation that circumference is shaken the head, one very little gap is arranged between stator 11 and the ring-type rotor 12, the curved edges motion of shaking the head in stator limit during transmission, therefore the point of contact contact is arranged between the rotor, its contact point moves on the circumferential periphery of stator, successively, the frictional force between stator and rotor makes rotor rotate along the direction opposite with the contact point moving direction.
The key of ultrasonic motor rotor motion is to make rotor to contact with stator and certain pressure is provided, and makes the ultrasonic vibration of stator surface by the frictional force drives rotor motion between rotor and the stator.So, in order to make rotor rotation, need the device that precompression between rotor and stator is provided.Existing two kinds of structures that precompression is provided as shown in Figures 2 and 3.Wherein Fig. 2 is the motor of shell locking strutcture, and whole driving mechanism covers on metal shell 20 the insides, and shell provides rotor 24 and 25 precompressions of stator by rubber blanket 21 and polytetrafluoroethylene circle 22 pressuring springs 23.Fig. 3 is the piezo column ultrasonic motor of fixed axle structure, and its medi-spring 33 provides the pressure between rotor and stator.
It is comparatively complicated that existing ultrasonic motor design feature provides the precompression device, comparatively bothers in the realization.The tumbler that provides to the external world is a thin axle (as shown in Figure 2) in addition, or the ring-type rotor (as shown in Figure 3) of spring compression, is unfavorable for using in some cases.
Summary of the invention
The objective of the invention is to propose a kind of micro supersonic motor device that utilizes magnetic pressure, provide by the magnetic force between magnet and the stator and rotate required precompression for overcoming the weak point of prior art.This ultrasonic motor is simple in structure, is easy to microminiaturization, can have a wide range of applications in fields such as biology, medical treatment, micromechanicss.
A kind of micro supersonic motor device that utilizes magnetic pressure that the present invention proposes, comprise stator, the rotor that encourages ultrasonic vibration and rotor is provided and stator between the device of precompression, it is characterized in that, said stator by the piezo ceramic element of excited vibration and coupled by can and magnet between produce the match block that the material of suction makes and constitute; Said rotor is made of not magnetizable matrix and coupled magnet, and the magnetic force that this magnet provided is enough to bear the gravity of rotor itself, thereby and provides the precompression between stator and rotor that rotor can be rotated.
This ultrasonic motor that utilizes magnetic pressure of the present invention only needs in use rotor and tumbler be fixed together by mechanical fixation or bonding method and gets final product, and the rotation of rotor at this moment will provide power for whole tumbler.
The present invention provides rotation required precompression by the magnet and the magnetic force between the stator of rotor.Its advantage is simple in structure, simple for production, is easy to microminiaturization, is easy to use.
The present invention will have a wide range of applications in fields such as biology, medical treatment, micromechanicss.
Description of drawings
Fig. 1 is the ultrasonic motor motion schematic diagram of shaking the head.
Fig. 2 is the ultrasonic motor structural representation of existing a kind of outer fastening.
Fig. 3 is the ultrasonic motor structural representation of existing a kind of fixed axis.
Fig. 4 is a ultrasonic motor stator structure embodiment schematic diagram of the present invention.
Fig. 5 is a ultrasonic motor rotor structure embodiment schematic diagram of the present invention.
Embodiment
Supersonic motor device of the present invention comprises stator and two major parts of rotor.Stator structure embodiment as shown in Figure 4, it constitutes (piezo ceramic element and match block also can adopt other shape) by the cylindrical piezoelectric ceramic component 42 and the coupled cylindrical match block 41 of excited vibration, these match block 41 surfaces are connected with an outstanding axle, this match block and the available ordinary steel one of outstanding axle process (also can adopt other and magnet to produce the material of magnetic attraction), and wherein the outstanding axle of match block plays the role of positioning.And ultrasonic motor rotor structure embodiment as shown in Figure 5, and this rotor is made of the porose aluminium cylinder in center or stainless steel cylinder 52 and the discoid magnet 51 on it, and discoid magnet is made as neodymium iron boron, ferrite etc. by permanent magnetic material.Bonding or mechanical mode is fixed together by seccotine between the two.Only rotor need be cooperated by axis hole with stator and assemble and to use.The outstanding axle of the hole of rotor center and stator forms matching relationship.Be more prone to when bonding in order to make, the hole of the aluminium post of present embodiment is processed as blind hole, and promptly the one end is not got through, and gets through certainly and can use.Because the material of the outstanding axle of stator match block be for can producing the material of magnetic attraction with magnet, produce suction between the magnet of outstanding axle and rotor, thereby make rotor can be adsorbed on the stator and precompression between rotor and the stator is provided, in order to the driving rotor rotation.The also available other not magnetizable material of aluminium post wherein, but can not use magnetizable material, otherwise its magnetization will make the pressure between rotor and stator very little, be not enough to provide the power of rotor rotation.
The overall dimension of present embodiment is: the diameter of stator and rotor is 2mm, and magnet length is 2mm, and when rotor and stator pack were fitted together, length was no more than 8mm.
Claims (2)
1. micro supersonic motor device that utilizes magnetic pressure, comprise stator, the rotor that encourages ultrasonic vibration and rotor is provided and stator between the device of precompression, it is characterized in that, said stator by the piezo ceramic element of excited vibration and coupled by can and magnet between produce the match block that the material of magnetic attraction makes and constitute; Said rotor is made of not magnetizable matrix and coupled magnet, and the magnetic force that this magnet provided is enough to bear the gravity of rotor itself, and provides the precompression between stator and rotor that rotor can be rotated; Said rotor matrix is the non magnetic cylinder that there are blind hole or through hole in the center, said magnet is and the corresponding disc magnet of this pole section shape, the match block of said stator has the outstanding axle that matches with the hole of this rotor, and stator realizes being assembled into one with rotor by axle and cooperating of hole.
2. the micro supersonic motor device that utilizes magnetic pressure as claimed in claim 1, it is characterized in that, said match block adopts the ordinary steel one to process, said rotor matrix adopts aluminium or stainless steel to make, said magnet is made by permanent magnetic material, and bonding or mechanical mode is fixed together by seccotine for this magnet and rotor matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100802812A CN100367650C (en) | 2004-09-29 | 2004-09-29 | Micro supersonic motor device using magnetic pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100802812A CN100367650C (en) | 2004-09-29 | 2004-09-29 | Micro supersonic motor device using magnetic pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1588783A CN1588783A (en) | 2005-03-02 |
| CN100367650C true CN100367650C (en) | 2008-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100802812A Expired - Fee Related CN100367650C (en) | 2004-09-29 | 2004-09-29 | Micro supersonic motor device using magnetic pressure |
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| Country | Link |
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| CN (1) | CN100367650C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101170290B (en) * | 2007-09-26 | 2010-09-15 | 哈尔滨工业大学 | Micro bending ultrasonic electromotor based on magnetic force pre-pressure device |
| CN101170289B (en) * | 2007-09-26 | 2010-09-01 | 哈尔滨工业大学 | Pre-pressure device of magnetic force pressure enforcement and micro face ultrasonic electromotor based on this device |
| CN108599617B (en) * | 2018-04-02 | 2019-11-01 | 中国工程物理研究院电子工程研究所 | A kind of pretightning force loading structure for ultrasonic micromotor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1066940A (en) * | 1992-07-02 | 1992-12-09 | 清华大学 | Piezoelectric-current changing rotary step motor |
| CN1267950A (en) * | 2000-04-28 | 2000-09-27 | 清华大学 | Two-way rotating longitudinal-bending standing-wave supersonic motor |
| CN1306336A (en) * | 2001-02-28 | 2001-08-01 | 清华大学 | Bending-vibration ultrasonic small electric machine based on piezoelectric column and electrode combination exciation method |
| CN1359188A (en) * | 2002-01-29 | 2002-07-17 | 清华大学 | Curve and straight combined straight line ulrasonic motor |
-
2004
- 2004-09-29 CN CNB2004100802812A patent/CN100367650C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1066940A (en) * | 1992-07-02 | 1992-12-09 | 清华大学 | Piezoelectric-current changing rotary step motor |
| CN1267950A (en) * | 2000-04-28 | 2000-09-27 | 清华大学 | Two-way rotating longitudinal-bending standing-wave supersonic motor |
| CN1306336A (en) * | 2001-02-28 | 2001-08-01 | 清华大学 | Bending-vibration ultrasonic small electric machine based on piezoelectric column and electrode combination exciation method |
| CN1359188A (en) * | 2002-01-29 | 2002-07-17 | 清华大学 | Curve and straight combined straight line ulrasonic motor |
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| Publication number | Publication date |
|---|---|
| CN1588783A (en) | 2005-03-02 |
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