CN100566114C - The stator of combined crosswise energisation mode and use little ultrasound electric machine of this stator - Google Patents
The stator of combined crosswise energisation mode and use little ultrasound electric machine of this stator Download PDFInfo
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- CN100566114C CN100566114C CNB2005100104887A CN200510010488A CN100566114C CN 100566114 C CN100566114 C CN 100566114C CN B2005100104887 A CNB2005100104887 A CN B2005100104887A CN 200510010488 A CN200510010488 A CN 200510010488A CN 100566114 C CN100566114 C CN 100566114C
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Abstract
The stator of combined crosswise energisation mode and use little ultrasound electric machine of this stator, it belongs to the ultrasonic vibration application, and it is the little problem of output torque when overcoming existing little ultrasound electric machine inefficiency, miniaturization.The stator of combined crosswise energisation mode of the present invention, it is made of piezo ceramic element and stator match block, and the outer surface of described piezo ceramic element is evenly distributed with the external electrode that supplies excited vibration to use of eight radial polarised; Little ultrasound electric machine of the present invention is that a kind of piezo ceramic element of eight external electrodes that adopts is as the little ultrasound electric machine of the flexural vibration mode of stator.The present invention has significantly improved the operating efficiency of motor, has improved the mechanical property of motor, has promoted the practicability and the miniaturization of flexural vibrating ultrasound motor.Little ultrasound electric machine of the present invention has the supersonic motor of four external electrode stators than traditional use, and its performance improves significantly, and it is about 23% that no-load speed has improved, and stalling torque has improved about 45%.
Description
Technical field
The invention belongs to the ultrasonic vibration application, be specifically related to a kind of flexural vibration mode ultrasonic vibration excitation stator that adopts brand-new subregion energisation mode and little ultrasound electric machine that uses this stator of utilizing.
Background technology
The flexural vibration mode ultrasound electric machine is a kind of of ultrasound electric machine, and other ultrasound electric machine is relatively simple for structure relatively for it.Difference according to stator profile, the flexural vibration mode ultrasound electric machine can be divided into piezoelectric patches sandwich ultrasound electric machine, piezoelectricity pillar ultrasound electric machine and piezoelectricity tubular type ultrasound electric machine, wherein the operating efficiency of ultrasound electric machine be sign its can practicability an important measurement parameter.The principal element that influences this type of electric efficiency has: the subregion energisation mode of the project organization of motor and stator.As shown in Figure 1, the subregion energisation mode of existing piezoelectricity tubular type ultrasound electric machine stator (piezoelectric ceramic tube) is: the silverskin in piezoelectric ceramic tube 1 outside evenly is divided into four parts of galactic pole 1-1,1-2,1-3 and 1-4, and with its pass to respectively sin, cos ,-sin and-cos four road ac signals encourage; As shown in Figure 2, the subregion energisation mode of existing piezoelectricity pillar ultrasound electric machine stator (piezoelectric ceramic post) for the silverskin in piezoelectric ceramic post 2 outsides also evenly is divided into four parts of galactic pole 2-1,2-2,2-3 and 2-4 and be connected with respectively sin, cos ,-sin and-cos four road ac signals encourage, for example publication number is the patent of 1440115A.The main advantage of above-mentioned flexural vibration mode ultrasound electric machine is that the subregion energisation mode of stator is simpler, but the inefficiency of its motor, output torque little, this problem seems particularly outstanding when the further miniaturization of motor.
Summary of the invention
The little problem of output torque when overcoming existing little ultrasound electric machine inefficiency, miniaturization the invention provides a kind of stator of combined crosswise energisation mode and uses little ultrasound electric machine of this stator.The stator of combined crosswise energisation mode provided by the invention, it is made of piezo ceramic element and stator match block, the outer surface of described piezo ceramic element is evenly distributed with the external electrode that supplies excited vibration to use of eight radial polarised, described have the piezo ceramic element of eight external electrodes by ring flange, first piezo tube and second piezo tube constitute, the outer surface of described first piezo tube and second piezo tube all is evenly distributed with four external electrodes that supply excited vibration to use that polarised direction is identical, ring flange is fixedly connected between first piezo tube and second piezo tube and the central axes of first piezo tube and second piezo tube, and the position of the position of four external electrodes of first piezo tube and four external electrodes of second piezo tube is corresponding one by one respectively to be provided with.Use little ultrasound electric machine of aforesaid combined crosswise energisation mode stator among the present invention, it contains stator, rotor and the pre-pressure mechanism that is made of piezo ceramic element and stator match block, it is a kind of little ultrasound electric machine of flexural vibration mode, and the outer surface of described piezo ceramic element is evenly distributed with the external electrode that supplies excited vibration to use of eight radial polarised.
Because ultrasound electric machine of the present invention has used the stator of brand-new subregion energisation mode---adopt the stator of combined crosswise energisation mode, significantly improved the operating efficiency of motor, improved the mechanical property of motor, promoted the practicability and the miniaturization of flexural vibrating ultrasound motor, so the present invention there is wide application prospect at aspects such as Aero-Space, medicine equipment, intelligent robot, science and techniques of defence.Under same driving voltage peak-to-peak value, little ultrasound electric machine of the present invention has the supersonic motor of four external electrode stators than traditional use, and its performance improves significantly, and it is about 23% that no-load speed has improved, and stalling torque has improved about 45%.
Description of drawings
Fig. 1 is the partitioned mode schematic diagram of existing piezoelectricity tubular type ultrasound electric machine stator (piezoelectric ceramic tube); Fig. 2 is the partitioned mode schematic diagram of existing piezoelectricity pillar ultrasound electric machine stator (piezoelectric ceramic post); The partitioned mode schematic diagram of piezoelectric ceramic tube 3 in the ultrasound electric machine stator that Fig. 3 designs for the present invention; Fig. 4 is the rearview of piezoelectric ceramic tube 3 among Fig. 3; Fig. 5 is the structural representation of piezo ceramic element in the embodiment three; Fig. 6 is the structural representation of embodiment seven middle sleeves 4; Fig. 7 is the structural representation of embodiment eight middle sleeves 4; Fig. 8 is the structural representation of embodiment nine middle sleeves 4; Fig. 9 is the structural representation of the little ultrasound electric machine of tubulose of the combined crosswise energisation mode of the present invention's proposition.
Embodiment
Embodiment one: referring to Fig. 3 to Fig. 5, the stator of the combined crosswise energisation mode that this embodiment provides, it is made of piezo ceramic element and stator match block, and the outer surface of described piezo ceramic element is evenly distributed with the external electrode that supplies excited vibration to use of eight radial polarised.
Described piezo ceramic element is the piezo tube (outer surface posts the metal tube of electroded piezoelectric ceramic piece) of the piezo column (outer surface posts the metal column of electroded piezoelectric ceramic piece) or the band contact tube of piezoelectric ceramic tube, piezoelectric ceramic post, band conductive shaft.When described piezo ceramic element was piezoelectric ceramic tube, polarised direction was inner surface or the outer surface from the inner surface of piezoelectric ceramic tube to piezoelectric ceramic tube from the outer surface of piezoelectric ceramic tube to piezoelectric ceramic tube; The polarised direction of the piezo ceramic element of other situation is similar to the above, and radial polarised of the present invention adopts conventional method.
Embodiment two: referring to Fig. 3 and Fig. 4, this embodiment adopts following method to obtain described piezo ceramic element with eight external electrodes: the surfaces externally and internally after, selecting to have polarized all is coated with the piezoelectric ceramic tube 3 (buying from Chinese Academy of Sciences's Beijing acoustics) of one deck silverskin, and it adopts the radial polarised mode from the outer surface to the inner surface; Two, with adhesive tape the surperficial silverskin of above-mentioned piezoelectric ceramic tube 3 evenly is divided into eight parts, then the surfaces externally and internally of above-mentioned piezoelectric ceramic tube 3 is all coated corrosion resistant coating and dry, described corrosion resistant coating is insoluble to nitric acid, as the DY-ZB-288 protective paint; Three, the tear adhesive tape of piezoelectric ceramic tube 3 outer surfaces and piezoelectric ceramic tube 3 put in the salpeter solution, stop moments later and take out, the position silverskin that originally posted adhesive tape has been eroded by nitric acid, and originally do not have the rubberizing cloth the position since the protection silverskin of corrosion resistant coating be retained; Four, utilize acetone soln to remove the corrosion resistant coating of piezoelectric ceramic tube 3 surfaces externally and internallies, can obtain the piezoelectric ceramic tube 3 that outer surface has eight silver electrodes, these eight silver electrodes are respectively: the first silver electrode 3-1-1, the second silver electrode 3-1-2, the 3rd silver electrode 3-1-3, the 4th silver electrode 3-1-4, the 5th silver electrode 3-1-5, the 6th silver electrode 3-1-6, the 7th silver electrode 3-1-7 and the 8th silver electrode 3-1-8.This embodiment provides a kind of chemical method that adopts to obtain described method with piezo ceramic element of eight external electrodes, and this method is simple, easy to operate.In this embodiment, piezoelectric ceramic tube 3 can replace with the piezoelectric ceramic post or the band conductive shaft piezo column, the band contact tube piezo tube in any one.
Embodiment three: referring to Fig. 5, in this embodiment, described have the piezo ceramic element of eight external electrodes by ring flange 11, the first piezo tube 3-1 and the second piezo tube 3-2 constitute, the outer surface of the described first piezo tube 3-1 and the second piezo tube 3-2 all is evenly distributed with four external electrodes that supply excited vibration to use that polarised direction is identical, ring flange 11 is fixedly connected between the first piezo tube 3-1 and the second piezo tube 3-2 and the central axes of the first piezo tube 3-1 and the second piezo tube 3-2, and the position of the position of four external electrodes of the first piezo tube 3-1 and four external electrodes of the second piezo tube 3-2 is corresponding one by one respectively to be provided with.When adopting this embodiment, the first piezo tube 3-1 and the second piezo tube 3-2 can buy and obtain; Compare with embodiment two, utilize ring flange that two piezo tube are fixed together and an outer surface obtaining has the method for the piezo tube of eight electrodes, operate simpler, faster; And ring flange 11 can also be used for fixing other structure member of little ultrasound electric machine.In this embodiment, the first piezo tube 3-1 and the second piezo tube 3-2 can be the piezo tube of piezoelectric ceramic tube 3 or band contact tube, and they can also be the piezo columns of piezoelectric ceramic post or band conductive shaft.
Embodiment four: referring to Fig. 9, in this embodiment, use little ultrasound electric machine of combined crosswise energisation mode stator, it contains stator, rotor 5 and the pre-pressure mechanism that is made of piezo ceramic element and stator match block, it is a kind of little ultrasound electric machine of flexural vibration mode, and the outer surface of described piezo ceramic element is evenly distributed with the external electrode that supplies excited vibration to use of eight radial polarised.
Embodiment five: referring to Fig. 9, this embodiment with the difference of embodiment four is: described stator match block is coaxial with piezo ceramic element, and an end of described stator match block and described piezo ceramic element are bonded as one, the other end of described stator match block is connected with the inner face friction of rotor 5, coaxial and the rotor 5 of described rotor 5 and moment output shaft 6 is radially fixedlyed connected with moment output shaft 6, and described pre-pressure mechanism is by being enclosed within on the moment output shaft 6 coaxially and pressing the first packing ring 7-1 of rotor 5 outer faces successively, spring 9, the second packing ring 7-2 and nut 8 constitute.Other composition is identical with embodiment four with annexation.The bonding glue that can adopt supernatural power bell glue or epoxy resin one class of piezo ceramic element and match block.
Embodiment six: referring to Fig. 6 and Fig. 9, the difference of this embodiment and embodiment five is: described piezo ceramic element adopts the prepared piezoelectric ceramic tube with eight external electrodes 3 of embodiment two, the first silver electrode 3-1-1 of piezoelectric ceramic tube 3, the second silver electrode 3-1-2, the 3rd silver electrode 3-1-3, the 4th silver electrode 3-1-4, the 5th silver electrode 3-1-5, the 6th silver electrode 3-1-6, the 7th silver electrode 3-1-7 is connected sin successively with the 8th silver electrode 3-1-8, cos,-sin,-cos,-sin,-cos, sin, the output of cos ac signal.Above-mentioned motivational techniques make stator produce required crooked yawing.Other composition is identical with embodiment five with annexation.
Embodiment seven: referring to Fig. 6 and Fig. 9, this embodiment is with the difference of embodiment six: described stator match block is made of two sleeves 4, one end of each sleeve 4 all has a boss shoulder, the boss shoulder of described sleeve 4 is bonded as one with piezoelectric ceramic tube 3, described sleeve 4, piezoelectric ceramic tube 3 and rotor 5 are enclosed within on the moment output shaft 6 coaxially, described moment output shaft 6 be connected with rotor 5 part outer surface be provided with a groove 12, pin 10 radially is inserted in the groove 12 along rotor 5.Other composition is identical with embodiment six with annexation.Groove 12 and cooperating of pin 10 are in order to make moment output shaft 6 and rotor 5 coaxial rotation, and rotor 5 can apply precompression to stator vertically.This embodiment provides a kind of structure of little ultrasound electric machine of piezoelectricity tubular type; Publication number provides a kind of structure of little ultrasound electric machine of piezoelectricity pillar for the patent of 1440115A, if replace its piezo column can obtain a kind of little ultrasound electric machine that uses the piezoelectricity pillar stator of combined crosswise energisation mode with the stator (the piezoelectricity pillar stator with eight external electrodes) of the designed combined crosswise energisation mode of the present invention.
Embodiment eight: referring to Fig. 7 and Fig. 9, this embodiment is with the difference of embodiment seven: the other end of described sleeve 4 is an internal conical surface, the inner face of described rotor 5 is an outer conical surface, and the internal conical surface of described sleeve 4 is connected with the outer conical surface friction of the inner face of rotor 5.Other composition is identical with embodiment seven with annexation.
Embodiment nine: referring to Fig. 8 and Fig. 9, this embodiment is with the difference of embodiment seven: the other end of described sleeve 4 is interior hemisphere face, the inner face of described rotor 5 is outer hemisphere face, and the interior hemisphere face of described sleeve 4 is connected with the outer hemisphere face friction of the inner face of rotor 5.Other composition is identical with embodiment seven with annexation.
Claims (7)
1, the stator of combined crosswise energisation mode, it is made of piezo ceramic element and stator match block, it is characterized in that the outer surface of described piezo ceramic element is evenly distributed with the external electrode that supplies excited vibration to use of eight radial polarised, described have the piezo ceramic element of eight external electrodes by ring flange (11), first piezo tube (3-1) and second piezo tube (3-2) constitute, the outer surface of described first piezo tube (3-1) and second piezo tube (3-2) all is evenly distributed with four external electrodes that supply excited vibration to use that polarised direction is identical, ring flange (11) is fixedly connected between first piezo tube (3-1) and second piezo tube (3-2) and the central axes of first piezo tube (3-1) and second piezo tube (3-2), and the position of four external electrodes of the position of four external electrodes of first piezo tube (3-1) and second piezo tube (3-2) is corresponding one by one respectively to be provided with.
2, the stator of combined crosswise energisation mode according to claim 1 is characterized in that described piezo ceramic element is the piezo tube of the piezo column or the band contact tube of piezoelectric ceramic tube, piezoelectric ceramic post, band conductive shaft.
3, use little ultrasound electric machine of combined crosswise energisation mode stator as claimed in claim 1, it contains stator, rotor (5) and the pre-pressure mechanism that is made of piezo ceramic element and stator match block, it is characterized in that it is a kind of little ultrasound electric machine of flexural vibration mode, the outer surface of described piezo ceramic element is evenly distributed with the external electrode that supplies excited vibration to use of eight radial polarised.
4, little ultrasound electric machine of use combined crosswise energisation mode stator according to claim 3, it is characterized in that described stator match block is coaxial with piezo ceramic element, and an end of described stator match block and described piezo ceramic element are bonded as one, the other end of described stator match block is connected with the inner face friction of rotor (5), described rotor (5) and rotor (5) coaxial with moment output shaft (6) radially fixedlyed connected with moment output shaft (6), and described pre-pressure mechanism is to go up and pressing successively first packing ring (7-1) of rotor (5) outer face by being enclosed within moment output shaft (6) coaxially, spring (9), second packing ring (7-2) and nut (8) constitute.
5, little ultrasound electric machine according to claim 3 or 4 described use combined crosswise energisation mode stators, it is characterized in that described stator match block is made of two sleeves (4), one end of each sleeve (4) all has a boss shoulder, the boss shoulder of described sleeve (4) is bonded as one with piezo ceramic element, described sleeve (4), piezo ceramic element and rotor (5) are enclosed within on the moment output shaft (6) coaxially, described moment output shaft (6) be connected with rotor (5) part outer surface be provided with a groove (12), pin (10) radially is inserted in the groove (12) along rotor (5).
6, little ultrasound electric machine of use combined crosswise energisation mode stator according to claim 5, the other end that it is characterized in that described sleeve (4) is an internal conical surface, the inner face of described rotor (5) is an outer conical surface, and the internal conical surface of described sleeve (4) is connected with the outer conical surface friction of the inner face of rotor (5).
7, little ultrasound electric machine of use combined crosswise energisation mode stator according to claim 5, the other end that it is characterized in that described sleeve (4) is interior hemisphere face, the inner face of described rotor (5) is outer hemisphere face, and the interior hemisphere face of described sleeve (4) is connected with the outer hemisphere face friction of the inner face of rotor (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100104887A CN100566114C (en) | 2005-10-31 | 2005-10-31 | The stator of combined crosswise energisation mode and use little ultrasound electric machine of this stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100104887A CN100566114C (en) | 2005-10-31 | 2005-10-31 | The stator of combined crosswise energisation mode and use little ultrasound electric machine of this stator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1773832A CN1773832A (en) | 2006-05-17 |
| CN100566114C true CN100566114C (en) | 2009-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100104887A Expired - Fee Related CN100566114C (en) | 2005-10-31 | 2005-10-31 | The stator of combined crosswise energisation mode and use little ultrasound electric machine of this stator |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779244A (en) * | 2015-04-08 | 2015-07-15 | 河南师范大学 | Piezoelectric patch assembled piezoelectric tube |
| CN105553326A (en) * | 2015-12-15 | 2016-05-04 | 上海交通大学 | Low-voltage drive piezoelectric micromotor |
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- 2005-10-31 CN CNB2005100104887A patent/CN100566114C/en not_active Expired - Fee Related
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Granted publication date: 20091202 Termination date: 20101031 |