CN2659021Y - Metal column stator adhered with piezoelectric sheet and micro-ultra sounic motor using said stator - Google Patents
Metal column stator adhered with piezoelectric sheet and micro-ultra sounic motor using said stator Download PDFInfo
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- CN2659021Y CN2659021Y CN 03260512 CN03260512U CN2659021Y CN 2659021 Y CN2659021 Y CN 2659021Y CN 03260512 CN03260512 CN 03260512 CN 03260512 U CN03260512 U CN 03260512U CN 2659021 Y CN2659021 Y CN 2659021Y
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- stator
- rotor
- metal column
- armature spindle
- piezoelectric ceramic
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Abstract
The utility model discloses an ultrasonic vibration and excitation stator standing at a modality of bend and vibration and a motor equipped with the stator. A metal post of stator to which a piezoelectric sheet is stuck consists of a metal post (7-1), a piezoelectric ceramic sheet (7-2) and a piezoelectric ceramic sheet (7-3), wherein a surface (7-1-1) and a surface (7-1-2) are arranged on the cylindrical surface of the metal post (7-1) and keep vertical mutually; a rectangular (7-2) and a rectangular (7-3) are polarized so that one surface is a positive electrode and the other surface is a negative electrode, wherein the surfaces positioned at the (7-2) and the (7-3) with the same polarity are respectively stuck to the surfaces (7-1-1) and (7-1-2); the external surfaces of the (7-2) and the (7-3) are respectively connected with an electric contact (7-4) and an electric contact (7-5). A mini ultrasonic motor comprises a rotor (8), a matching block of stator (9), a spring (10), a rotor shaft (11) and a metal post of stator (7) to which a piezoelectric sheet is stuck. The lower end plane of the matching block of stator (9) is cohered to the upper end plane of the metal post of stator (7). The utility model greatly promotes the micromation and practicability of the ultrasonic motor and faces a bright application perspective in the fields of biology, medical treatment, mini machinery and defense technology.
Description
Technical field: the utility model belongs to the ultrasonic vibration application, is specifically related to a kind of ultrasonic vibration excitation stator of flexural vibration mode and the motor of this stator of use.
Background technology: the flexural vibration mode ultrasonic motor is a kind of of ultrasonic motor, and its structure is simple with respect to other ultrasonic motor, is easy to realize microminiaturized.Up to the present, minimum flexural vibration mode ultrasonic motor is the piezo column ultrasonic motor of the diameter 1mm of Chinese Tsing-Hua University making, its employed piezo ceramic element is a piezo column, evenly coat four parts of silver electrodes respectively in piezoelectric ceramic post side, make its polarization by Fig. 1 mode direct current that adds high pressure, contact 1 connects high-voltage DC power supply, contact 2 ground connection, and direction shown in the arrow is a polarised direction.During use as shown in Figure 2, on electrode 3, electrode 4, electrode 5 and electrode 6, add respectively sin, cos ,-sin ,-cos four road ac signal excitations, at this moment piezo column is finished the function of stator with regard to limit curved edges yawing, but processing of the rounding of this piezoelectric ceramic post and area polarizing all compare difficulty, the qualification rate of manufacture process is lower, exists to be difficult to the difficulty that overcomes on the technology in the process of industrialization.
Utility model content:, provide a kind of stator of miniature ultrasonic motor of easy processing in order to overcome the unmanageable problem of stator of existing piezo column miniature ultrasonic motor.The utility model is achieved by following proposal, a kind of metal column stator of pasting piezoelectric patches, it is by metal column 7-1, piezoelectric ceramic piece 7-2 and piezoelectric ceramic piece 7-3 form, have mutually perpendicular surperficial 7-1-1 and surperficial 7-1-2 on the periphery of metal column 7-1, it is that anodal another surface is a negative pole that the piezoelectric ceramic piece 7-2 of rectangle and piezoelectric ceramic piece 7-3 are polarized to a surface, the surface with identical polar of piezoelectric ceramic piece 7-2 and piezoelectric ceramic piece 7-3 sticks on respectively on surperficial 7-1-1 and the surperficial 7-1-2, is connected with electric contact 7-4 and electric contact 7-5 on the outer surface of piezoelectric ceramic piece 7-2 and piezoelectric ceramic piece 7-3 respectively.Add ac signal on electric contact 7-4, electric contact 7-5 does not add any signal simultaneously, just can encourage this metal column to produce required crooked yawing.On electric contact 7-5, do not add the then reverse yawing of this metal column of ac signal not adding any signal on the electric contact 7-4.The utility model has overcome the weak point of prior art on microminiaturized direction, and metal column 7-1 processing is simple, piezoelectric ceramic piece 7-2 and piezoelectric ceramic piece 7-3 polarization easily, solved be difficult in the microminiaturized process of ultrasonic motor to process, problem that rate of finished products is low.
The utility model also provides a kind of micro-ultrasonic motor that uses the metal column stator of pasting piezoelectric patches, it comprises rotor 8, stator match block 9, spring 10, armature spindle 11, it also comprises the metal column stator 7 of pasting piezoelectric patches, armature spindle 11 passes rotor 8 and is connected with the stator match block 9 that is positioned at rotor 8 belows, key connecting between armature spindle 11 and the rotor 8, spring 10 be enclosed within on the armature spindle 11 and be arranged on the upper surface of rotor 8 and the catch 11-1 of armature spindle 11 upper ends between, the lower surface of rotor 8 is a taper seat, the lower surface of the upper surface of stator match block 9 and rotor 8 matches, and the lower surface of stator match block 9 is bonded on the upper surface of the metal column stator 7 of pasting piezoelectric patches.Paste the metal column stator 7 work backs of piezoelectric patches and give rotor 8 and armature spindle 11 transmission of power by stator match block 9 fixed thereon.Because micro-ultrasonic motor of the present utility model has been used the metal column stator 7 of pasting piezoelectric patches, so overall dimension obtains very big reducing, can be processed as diameter between 0.3mm to 3mm, has promoted the microminiaturization and the practicability of ultrasonic motor significantly.The utility model has wide application prospect at aspects such as biology, medical treatment, micromechanics, science and techniques of defence.
Description of drawings: Fig. 1 and Fig. 2 are the stator structure schematic diagrames of the piezo column ultrasonic motor of prior art, Fig. 3 is the structural representation of metal column 7-1 in the metal column stator 7 of stickup piezoelectric patches of the present utility model, Fig. 4 is a structural representation of pasting the metal column stator 7 of piezoelectric patches, Fig. 5 is the structural representation of the utility model execution mode two and execution mode three, Fig. 6 is the structural representation of execution mode four, and Fig. 7 is the structural representation of execution mode five.
Embodiment one: specify present embodiment below in conjunction with Fig. 3 and Fig. 4.A kind of metal column stator of pasting piezoelectric patches, it is by metal column 7-1, piezoelectric ceramic piece 7-2 and piezoelectric ceramic piece 7-3 form, have mutually perpendicular surperficial 7-1-1 and surperficial 7-1-2 on the periphery of metal column 7-1, it is that anodal another surface is a negative pole that the piezoelectric ceramic piece 7-2 of rectangle and piezoelectric ceramic piece 7-3 are polarized to a surface, the surface with identical polar of piezoelectric ceramic piece 7-2 and piezoelectric ceramic piece 7-3 sticks on respectively on surperficial 7-1-1 and the surperficial 7-1-2, is connected with electric contact 7-4 and electric contact 7-5 on the outer surface of piezoelectric ceramic piece 7-2 and piezoelectric ceramic piece 7-3 respectively.
Embodiment two: specify present embodiment below in conjunction with Fig. 5.A kind of micro-ultrasonic motor that uses the metal column stator of pasting piezoelectric patches, it is by rotor 8, stator match block 9, spring 10, armature spindle 11, pasting the metal column stator 7 of piezoelectric patches forms, armature spindle 11 passes rotor 8 and is connected with the stator match block 9 that is positioned at rotor 8 belows, key connecting between armature spindle 11 and the rotor 8, spring 10 be enclosed within on the armature spindle 11 and be arranged on the upper surface of rotor 8 and the catch 11-1 of armature spindle 11 upper ends between, the lower surface of rotor 8 is a taper seat, the lower surface of the upper surface of stator match block 9 and rotor 8 matches, and the lower surface of stator match block 9 is bonded on the upper surface of the metal column stator 7 of pasting piezoelectric patches.
Embodiment three: specify present embodiment below in conjunction with Fig. 5.The difference of present embodiment and execution mode two is, has groove 9-1 on the rear surface of stator match block 9, and armature spindle 11 passes the place, lower surface in stator match block 9, and the bottom of armature spindle 11 is fixed with block plate 11-2.
Embodiment four: specify present embodiment below in conjunction with Fig. 6.The difference of present embodiment and execution mode two is, armature spindle 11 is fixed as one with stator match block 9, studs with bearing 12 between the cylindrical of the endoporus of rotor 8 and armature spindle 11, and spring 10 is pressed on the interior ring upper surface of bearing 12.Armature spindle 11 so is set does not rotate, only depend on rotor 8 outputting powers, because bearing 12 is arranged, delivery efficiency is improved.
Embodiment five: specify present embodiment below in conjunction with Fig. 7.The difference of present embodiment and execution mode two is, it also comprises guard shield 13, paste the metal column stator 7 of piezoelectric patches, stator match block 9 and rotor 8 all cover in the guard shield 13, guard shield 13 is by upper shield 13-1, lower shield 13-2 and chassis 13-3 form, chassis 13-3 is fixed on the lower surface of the metal column stator 7 of pasting piezoelectric patches, the lower end of lower shield 13-2 is fixed on the 13-3 of chassis, upper shield 13-1 and lower shield 13-2 thread connection, armature spindle 11 is not connected with stator match block 9, armature spindle 11 is fixed on the upper surface of rotor 8, armature spindle 11 passes outside the top board 13-1-1 of upper shield 13-1, bearing 12 is arranged between the endoporus of the cylindrical of armature spindle 11 and top board 13-1-1, and spring 10 is arranged between the lower surface of the upper surface of rotor 8 and bearing 12.So be provided with, metal column stator 7, rotor 8 and the stator match block 9 of pasting piezoelectric patches have obtained good protection.
Claims (5)
1, a kind of metal column stator of pasting piezoelectric patches, it is characterized in that it is by metal column (7-1), piezoelectric ceramic piece (7-2) and piezoelectric ceramic piece (7-3) are formed, have mutually perpendicular surface (7-1-1) and surface (7-1-2) on the periphery of metal column (7-1), it is that anodal another surface is a negative pole that piezoelectric ceramic piece of rectangle (7-2) and piezoelectric ceramic piece (7-3) all are polarized to a surface, the surface with identical polar of piezoelectric ceramic piece (7-2) and piezoelectric ceramic piece (7-3) sticks on respectively on surface (7-1-1) and the surface (7-1-2), is connected with electric contact (7-4) and electric contact (7-5) on the outer surface of piezoelectric ceramic piece (7-2) and piezoelectric ceramic piece (7-3) respectively.
2, a kind of micro-ultrasonic motor that uses the metal column stator of pasting piezoelectric patches, it comprises rotor (8), stator match block (9), spring (10), armature spindle (11), it is characterized in that it also comprises the metal column stator (7) of pasting piezoelectric patches, armature spindle (11) passes rotor (8) and is connected with the stator match block (9) that is positioned at rotor (8) below, key connecting between armature spindle (11) and the rotor (8), spring (10) is enclosed within armature spindle (11) and goes up and be arranged between the upper surface and the catch (11-1) on the armature spindle (11) of rotor (8), the lower surface of rotor (8) is a taper seat, the lower surface of the upper surface of stator match block (9) and rotor (8) matches, and the lower surface of stator match block (9) is bonded on the upper surface of the metal column stator (7) of pasting piezoelectric patches.
3, the micro-ultrasonic motor of the metal column stator of piezoelectric patches is pasted in use according to claim 2, it is characterized in that having groove (9-1) on the rear surface of stator match block (9), armature spindle (11) passes the place, lower surface in stator match block (9), and the bottom of armature spindle (11) is fixed with block plate (11-2).
4, the micro-ultrasonic motor of the metal column stator of piezoelectric patches is pasted in use according to claim 2, it is characterized in that armature spindle (11) and stator match block (9) are fixed as one, stud with bearing (12) between the cylindrical of the endoporus of rotor (8) and armature spindle (11), spring (10) is pressed on the interior ring upper surface of bearing (12).
5, the micro-ultrasonic motor of the metal column stator of piezoelectric patches is pasted in use according to claim 2, it is characterized in that it also comprises guard shield (13), paste the metal column stator (7) of piezoelectric patches, stator match block (9) and rotor (8) all cover in the guard shield (13), guard shield (13) is by upper shield (13-1), lower shield (13-2) and chassis (13-3) form, chassis (13-3) is fixed on the lower surface of the metal column stator (7) of pasting piezoelectric patches, the lower end of lower shield (13-2) is fixed on the chassis (13-3), upper shield (13-1) and lower shield (13-2) thread connection, armature spindle (11) is not connected with stator match block (9), armature spindle (11) is fixed on the upper surface of rotor (8), armature spindle (11) passes outside the top board (13-1-1) of upper shield (13-1), bearing (12) is arranged between the endoporus of the cylindrical of armature spindle (11) and top board (13-1-1), and spring (10) is arranged between the lower surface of the upper surface of rotor (8) and bearing (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03260512 CN2659021Y (en) | 2003-09-08 | 2003-09-08 | Metal column stator adhered with piezoelectric sheet and micro-ultra sounic motor using said stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03260512 CN2659021Y (en) | 2003-09-08 | 2003-09-08 | Metal column stator adhered with piezoelectric sheet and micro-ultra sounic motor using said stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2659021Y true CN2659021Y (en) | 2004-11-24 |
Family
ID=34329156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03260512 Expired - Lifetime CN2659021Y (en) | 2003-09-08 | 2003-09-08 | Metal column stator adhered with piezoelectric sheet and micro-ultra sounic motor using said stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2659021Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7643232B2 (en) | 2006-09-26 | 2010-01-05 | Industrial Technology Research Institute | Piezoelectric-driving optical lens |
| CN102005966A (en) * | 2010-12-07 | 2011-04-06 | 中国科学院宁波材料技术与工程研究所 | Boundary condition-based single-drive two-way piezoelectric motor |
| CN104124893A (en) * | 2014-07-21 | 2014-10-29 | 上海交通大学 | Grooving type longitrorse compound ultrasonic motor |
| CN112953298A (en) * | 2021-03-26 | 2021-06-11 | 重庆第二师范学院 | Flat ultrasonic motor |
-
2003
- 2003-09-08 CN CN 03260512 patent/CN2659021Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7643232B2 (en) | 2006-09-26 | 2010-01-05 | Industrial Technology Research Institute | Piezoelectric-driving optical lens |
| CN102005966A (en) * | 2010-12-07 | 2011-04-06 | 中国科学院宁波材料技术与工程研究所 | Boundary condition-based single-drive two-way piezoelectric motor |
| CN104124893A (en) * | 2014-07-21 | 2014-10-29 | 上海交通大学 | Grooving type longitrorse compound ultrasonic motor |
| CN104124893B (en) * | 2014-07-21 | 2016-11-16 | 上海交通大学 | Open flume type longitudinal-torsional compound ultrasonic motor |
| CN112953298A (en) * | 2021-03-26 | 2021-06-11 | 重庆第二师范学院 | Flat ultrasonic motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090506 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |