CN102255409A - Motor device - Google Patents
Motor device Download PDFInfo
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- CN102255409A CN102255409A CN2010101834144A CN201010183414A CN102255409A CN 102255409 A CN102255409 A CN 102255409A CN 2010101834144 A CN2010101834144 A CN 2010101834144A CN 201010183414 A CN201010183414 A CN 201010183414A CN 102255409 A CN102255409 A CN 102255409A
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- rotor
- stator
- magnet
- motor device
- core
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- 230000005291 magnetic effect Effects 0.000 claims abstract description 49
- 239000006247 magnetic powder Substances 0.000 claims abstract description 10
- 239000011258 core-shell material Substances 0.000 claims abstract description 4
- 238000004663 powder metallurgy Methods 0.000 claims abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 14
- 239000000696 magnetic material Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 7
- 230000009471 action Effects 0.000 abstract description 4
- 238000004804 winding Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 22
- 239000000843 powder Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 9
- 238000005245 sintering Methods 0.000 description 8
- 229910000976 Electrical steel Inorganic materials 0.000 description 7
- 239000002131 composite material Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000005389 magnetism Effects 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009183 running Effects 0.000 description 4
- 239000006104 solid solution Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005426 magnetic field effect Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- -1 oxide Substances 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
Images
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
A motor device comprises a stator part and a rotor part, wherein the rotor part is arranged on an inner ring of a stator part, and magnetic action is generated between the rotor part and the stator part so as to rotate on the inner ring of the stator part. The rotor part comprises a rotor iron core, wherein the rotor iron core is formed by magnetic powder through a powder metallurgy process in an integrated mode, the magnetic powder is made of soft magnetic materials with a core-shell structure, and the rotor part comprises a core main body providing magnetic force and a shell layer providing connection strength. The motor device of the invention improves the structure of the rotor part, so that the rotor part is not influenced by a coil, the number of winding turns or the diameter of the coil can be increased, the torque force and the rotating speed of the motor can be improved, the magnetic energy loss can be effectively reduced, the size of the motor can be reduced under the same unit output power, and the design concept of the existing motor rotor can be broken through.
Description
Technical field
A kind of motor apparatus refers to a kind of d.c. motor device especially.
Background technology
With reference to figure 1.Fig. 1 is a kind of three-dimensional cutaway view of conventional motor device.Traditional motor apparatus 1 is provided with a stator department 14 and a rotor portions 12 in housing 10 inside, rotor portions 12 has a rotor core 121, and rotor core 121 is provided with rotor coil 122.The axle center of rotor core 121 provides a rotating shaft 16, and so, rotor core 121 can drive rotating shaft 16 runnings when rotating.
Cooperate Fig. 1, with reference to figure 2.Fig. 2 is the schematic perspective view of the rotor core of conventional motor device.Rotor core 121 is formed with piling up through punching press by a plurality of silicon steel sheets 1210.Push away the folded rotor core 121 that forms by a plurality of silicon steel sheets 1210, its upper surface and lower surface are put insulating trip 123a and 123b respectively, the number of turns of rotor coil 122 according to design are wound on insulating trip 123a and the 123b again.
Yet following problem will take place the structure of this kind rotor core 121: (1) rotor core 121 is piled up by a plurality of silicon steel sheets 1210 and become a suction magnet, and is very time-consuming on making, and reduces raw-material magnetic characteristic simultaneously.(2) during rotor core 121 winding arounds, can reduce the suction magnetic effect of inhaling magnet at the line bag of upper surface and lower surface, and then have influence on the rotation strength and the speed of rotor core 121.(3) in the making, be merely able to produce the rotor core 121 of equal section shape, if will make the rotor core 121 of the non-equal section shape of tool, more the diel group cooperates, and causes the increase of making and assembly cost.
Prior art:
Motor apparatus 1
Housing 10
Rotor portions 12
Rotor coil 122
Stator department 14
Rotating shaft 16
The present invention:
Rotor core 3,220,220a, 220b, 220c, 222d
Core main body 3a, 3b, 3c
Interior utmost point tooth 202a, 202c
Summary of the invention
In view of this, the invention provides a kind of motor apparatus, it is promoted the overall efficiency of motor apparatus by the improvement on the rotor structure, and reduces manufacturing cost.
The motor apparatus of embodiments of the invention comprises a stator department and a rotor portions, and wherein, rotor portions is arranged at the inner ring of stator department, and produces magnetic action between rotor portions and the stator department, and rotates at the inner ring of stator department.Rotor portions comprises a rotor core, and rotor core is one-body molded by powder metallurgical technique by magnetic powder, and wherein magnetic powder is the soft magnetic material of tool nucleocapsid structure, and it includes core main body that magnetive attraction is provided and the shell that strength of connection is provided.
The rotor core of another embodiment of the present invention comprises a body and a rotating shaft, and wherein, body and rotating shaft are made by the soft magnetism powder is integrally formed, preferred high resistance soft magnetism powder.
In sum, the motor apparatus of embodiments of the invention is by the improvement to the rotor portions structure, make rotor portions can not be subjected to the line bag influence, can increase winding turns or line footpath, improve motor torsion and rotating speed, effectively reduce magnetic energy and decrease, under the same units power output, dwindle motor dimension, broken through the design idea of existing motor rotor.
Description of drawings
Fig. 1 is a kind of three-dimensional cutaway view of conventional motor device;
Fig. 2 is the schematic perspective view of the rotor core of conventional motor device;
Fig. 3 is the configuration diagram of the motor apparatus of embodiments of the invention;
Fig. 4 is a kind of nucleocapsid structure schematic diagram of the present invention;
Fig. 5 is an another kind of nucleocapsid structure schematic diagram of the present invention;
Fig. 6 is another nucleocapsid structure schematic diagram of the present invention;
Fig. 7 is the decomposing schematic representation of the motor apparatus of first embodiment of the invention;
Fig. 8 is the decomposing schematic representation of the motor apparatus of second embodiment of the invention;
Fig. 9 is the decomposing schematic representation of the motor apparatus of third embodiment of the invention;
Figure 10 is the decomposing schematic representation of the motor apparatus of fourth embodiment of the invention; And
Figure 11 is the rotor core schematic diagram of another embodiment of the present invention.
Wherein, description of reference numerals is as follows:
Embodiment
Please refer to Fig. 3.Fig. 3 is the configuration diagram of the motor apparatus of embodiments of the invention.The motor apparatus 2 of present embodiment comprises a stator department 20 and a rotor portions 22.Motor apparatus 2 structural designs are the inner rings that rotor portions 22 are arranged at stator department 20, and so, after motor apparatus 2 energisings, rotor portions 22 can magnetic action take place with stator department 20, and rotates at the inner ring of stator department 20.In the afore-mentioned, motor apparatus 2 can be a kind of direct current stepper motor, DC series excitation formula motor, DC Brushless Motor or direct-current brush motor.
Again with reference to figure 3.Rotor portions 22 comprises a rotor core 220, rotor core 220 profiles can be designed to a cylindrical rotor iron core, a radiation shape rotor core or a gear shape rotor core, yet, the profile of aforementioned various rotor core 220 is embodiments of the invention, be not the invention spirit that the present invention focuses on, all rotor cores 220 that can turn round with stator department 20 magnetic actions all belong to spirit of the present invention.
The rotor core 220 of present embodiment utilizes magnetic powder to form by powder metallurgical technique one sintering, and its technology comprises processes such as moulding, dewaxing, sintering, heat treatment, surface treatment.The powder that uses can be soft magnetic material, noncrystalline magnetic material and the composite material thereof of soft magnetic metal material, soft magnetic composite material, tool nucleocapsid structure.
For strengthening rotor core 220 magnetic characteristics and mechanical strength, the magnetic raw material of rotor core 220 can adopt the plyability soft magnetic material of tool nucleocapsid structure, it mainly is to utilize the non-principal phase material that adds low solid solution capacity or do not have solid solution capacity, and the diffusion of utilization powder sintering theory-separate out mechanism, with high (low) warm processing mode, make and produce nucleocapsid structure (Core-ShellStructure) between its crystal grain and intercrystalline or powder ball and powder ball again.
With reference to figure 4.Fig. 4 is a kind of nucleocapsid structure schematic diagram of the present invention.As shown in Figure 4, nucleocapsid structure comprises a core main body 3a and a shell 4a, and core main body 3a provide magnetive attraction, and the function of shell 4a is decreased generation and binding (Bond) intensity is provided for suppressing the metal vortex flow.So, aspect the magnetic material of core main body 3a, select soft magnetic material, as one of soft magnetic metal material, noncrystalline iron-based magnetic (Amorphous Iron Base), straight iron powder and composite material thereof, soft magnetism nonmetallic materials or combination in any based on the low magnetic loss of high initial permeability.And be major consideration in shell 4a part with easy formation high resistance material, as one of metallic composite, oxide, intermediate compound (IntermediateCompound), oxidation composite material, piezoelectric (Piezoelectricity), superconductor material or combination in any, make the resistance value of shell be higher than the resistance value of core main body.
Please refer to Fig. 5.Fig. 5 is an another kind of nucleocapsid structure schematic diagram of the present invention.As shown in Figure 5, the plyability soft magnetic material also can have multiple nucleocapsid structure.This kind structure mainly is made up of a plurality of magnetic core main body 3b and a plurality of shell 4b.For reaching this purpose, can be through repeatedly mist projection granulating, dry forming to make the magnetic powder of a plurality of nucleocapsid structures.
Please refer to Fig. 6.Fig. 6 is another nucleocapsid structure schematic diagram of the present invention.As shown in Figure 6, the plyability soft magnetic material also can have the nucleocapsid structure of similar cepaeform structure, and it is also to coat a shell 4d outward by a plurality of single nucleocapsid structures, and each single nucleocapsid structure comprises a core main body 3c and a shell 4c.
The insulation on rotor core 220 surfaces can be used insulating trip or coating insulation macromolecule mode, uses coating insulation macromolecule can reduce material cost and simplify manufacturing process.This surface treatment can be to be coated with layer of cloth, functional film etc.
The main consideration direction of the foregoing description is magnetic characteristic, mechanical strength, production three directions.Be to select the soft magnetic material of high initial permeability and low magnetic loss aspect magnetic characteristic, simultaneously powder handling become tool nucleocapsid structure body as core main body.And be the diffusion-separate out mechanism of utilization sintering theory aspect mechanical strength, magnetic is formed or possess nuclear-shell structurre (Core-Shell Structure), simultaneously in crystal grain and the binding of intercrystalline formation metal.
See also Fig. 7, Fig. 7 is the decomposing schematic representation of the motor apparatus of first embodiment of the invention.The stator department 20a of motor apparatus 2a by silicon steel sheet with punching press with pile up technology and form, it has the individual interior utmost point tooth 202a of 3 * m (m is a positive integer).Be arranged with a stator coil 24a on the utmost point tooth 202a in described, so, stator department 20a produces a rotating magnetic field when stator coil 24a switches on.In the afore-mentioned, control the control mode of each stator coil 24a "on" position, industry technology commonly used as control modes such as big step square wave commutation, gradual commutation, 180 degree square wave commutations, 180 degree plan string ripple commutations, 180 degree trapezoidal wave commutations or 150 degree 12 step square wave commutations are all is seldom given unnecessary details at this.
Again with reference to figure 7.The rotor portions 22a of motor apparatus 2a is made up of a rotor core 220a and an outer magnetite 222a.The configuration design of rotor core 220a becomes cylindrical, simultaneously, the outer magnetite 222a with phase different pole is set on the face of cylinder of rotor core 220a.The rotor core 220a that rotor portions 22a uses adopts the plyability soft magnetic material of tool nucleocapsid structure one-body molded by powder metallurgical technique.Therefore, rotor core 220a has the magnetic resistance also lower than air gap, so the magnetic flux that stator coil is produced increases, the working point of outer magnetite 222a is promoted, and then improve the efficient of motor apparatus 2a integral body.Simultaneously, rotor core 220a has the magnetic resistance also higher than silicon steel sheet, thus can effectively reduce the iron loss that produces because of changes of magnetic field, and then improve the efficient of motor apparatus 2a integral body.
The rotor portions 22a that is provided with rotor core 220a compares down with the rotor portions that tradition does not have to be provided with, use rotor core 220a to have the function that reduces magnetic resistance, should outer magnetite 222a have the individual magnetic pole of 2 * n (n is a positive integer), itself and rotating magnetic field effect, 220a rotates with the drive rotor core.In the present embodiment, outer magnetite 222a adopts 2 magnetic poles (the N utmost point and the S utmost point), and outer magnetite 222a can be a kind of annular magnetite or a kind of tile shape magnetite.
See also Fig. 8, Fig. 8 is the decomposing schematic representation of the motor apparatus of second embodiment of the invention.The stator department 20b of motor apparatus 2b is a stator magnetite with phase different pole.Stator department 20b has the individual magnetic pole of 2 * n (n is a positive integer), and its configuration design becomes a kind of annular magnetite or a kind of tile shape magnetite.In the present embodiment, stator department 20b adopts 2 magnetic poles (the N utmost point and the S utmost point).
Again with reference to figure 8.The rotor portions 22b of motor apparatus 2b has a rotor core 220b.The exterior design of rotor core 220b becomes radiation shape, its from the axle center extend outward 3 * m (m is a positive integer) individual outside utmost point tooth, simultaneously, be arranged with a rotor coil 224b on each outer utmost point tooth.So, rotor portions 22b produces a rotating magnetic field when rotor coil 224b switches on, and this rotating magnetic field and stator department 20b effect are to drive rotor core 220b rotation.In the afore-mentioned, control the control mode of each rotor coil 224b "on" position, intend the commutation of string ripple, 180 degree trapezoidal wave commutations or 150 degree 12 step square wave commutations etc. as the square wave commutation of six steps, gradual commutation, 180 degree square wave commutations, 180 degree, be all the industry common technology, seldom give unnecessary details at this.
See also Fig. 9, Fig. 9 is the decomposing schematic representation of the motor apparatus of third embodiment of the invention.Motor apparatus 2c is a kind of direct current stepper motor, its stator department 20c by silicon steel sheet through punching press with pile up technology and make, its have a plurality of in utmost point tooth 202c, described in the design of utmost point tooth 202c adopt gear-like.Be arranged with a stator coil 24c on the utmost point tooth 202c in described, so, stator department 20c produces an electromagnetic attraction when stator coil 24c switches on.In the afore-mentioned, the control mode of direct current stepper motor is the industry common technology, seldom gives unnecessary details at this.
Again with reference to figure 9.The rotor portions 22c of motor apparatus 2c is made up of magnetite 222c in a rotor core 220c and.The configuration design of rotor core 220c becomes gear shape, and it agrees with mutually with the interior utmost point tooth 202c of stator department 20c.Simultaneously, the inside of rotor core 220c is provided with the interior magnetite 222c with phase different pole, and magnetite 222c has the individual magnetic pole of 2 * n (n is a positive integer) in this.So, the electromagnetic attraction that is produced during stator coil 24c energising progressively drives rotor core 220c running at a certain angle.
See also Figure 10, Figure 10 is the decomposing schematic representation of the motor apparatus of fourth embodiment of the invention.Motor apparatus 2d has a stator department 20d and rotor portions 22d.Stator department 20d has stator 202d unshakable in one's determination, and the exterior design of stator core 202d becomes radiation shape, its from the axle center extend outward 3 * m (m is a positive integer) individual outside utmost point tooth, simultaneously, be arranged with a stator coil 204d on each outer utmost point tooth.So, stator department 20d produces a rotating magnetic field when stator coil 204d switches on, and this rotating magnetic field and rotor portions 22d effect are to drive rotor portions 22d rotation.In the afore-mentioned, control the control mode of each stator coil 204d "on" position, intend the commutation of string ripple, 180 degree trapezoidal wave commutations or 150 degree 12 step square wave commutations etc. as the square wave commutation of six steps, gradual commutation, 180 degree square wave commutations, 180 degree, be all the industry common technology, seldom give unnecessary details at this.
The rotor portions 22d of motor apparatus 2d is made up of magnetite 224d in a rotor core 222d and.The configuration design of rotor core 222d becomes the annular iron core, and itself and interior magnetite 224d link, and interior magnetite 224d is arranged on the inside of rotor core 222d.Simultaneously, interior magnetite 224d is an annular magnetite or a tile shape magnetite, and it has the phase different pole, has the individual magnetic pole of 2 * n (n is a positive integer).So, the electromagnetic attraction that is produced during stator coil 204d energising progressively drives rotor core 222d running at a certain angle.
With reference to Figure 11.Figure 11 is the rotor core schematic diagram of another embodiment of the present invention.The profile of rotor core 3 can be designed to a cylindrical rotor iron core, a radiation shape rotor core or a gear shape rotor core.Explain with the rotor core of radiation shape at this, wherein, rotor core 3 comprises a body 30 and a rotating shaft 32, and body 30 is made this rotor core 3 with rotating shaft 32 in integrated mode, and body 30 can drive rotating shaft 32 runnings when rotating.
The magnetic powder that the rotor core 3 of present embodiment utilizes preamble to mention equally forms by powder metallurgical technique one sintering, and its technology comprises processes such as moulding, dewaxing, sintering, heat treatment, surface treatment.The powder that uses can be soft magnetic material, noncrystalline magnetic material and the composite material thereof of soft magnetic metal material, soft magnetic composite material, tool nucleocapsid structure.
For strengthening rotor core 3 magnetic characteristics and mechanical strength, the magnetic raw material of rotor core 3 can adopt the plyability soft magnetic material of tool nucleocapsid structure, it mainly is to utilize the non-principal phase material that adds low solid solution capacity or do not have solid solution capacity, and the diffusion of utilization powder sintering theory-separate out mechanism, with high (low) warm processing mode, make and produce nucleocapsid structure (Core-Shell Structure) between its crystal grain and intercrystalline or powder ball and powder ball again.
In sum, the motor apparatus of embodiments of the invention is by the improvement to the rotor portions structure, make rotor portions can not be subjected to the line bag influence, can increase winding turns or line footpath, improve motor torsion and rotating speed, effectively reduce magnetic energy and decrease, under the same units power output, dwindle motor dimension, broken through the design idea of existing motor rotor.
But; the above; only be to the detailed description of one of best specific embodiment of the present invention and graphic, any those skilled in the art under teaching of the present invention, can think easily and variation or modify all should be covered by in the protection range that claim of the present invention defines.
Claims (14)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101834144A CN102255409A (en) | 2010-05-18 | 2010-05-18 | Motor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101834144A CN102255409A (en) | 2010-05-18 | 2010-05-18 | Motor device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102255409A true CN102255409A (en) | 2011-11-23 |
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ID=44982446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101834144A Pending CN102255409A (en) | 2010-05-18 | 2010-05-18 | Motor device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102255409A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645722A (en) * | 2012-03-30 | 2012-08-22 | 苏州怡信光电科技有限公司 | Zooming lens of image measurement instrument |
| WO2023006124A1 (en) * | 2021-07-30 | 2023-02-02 | 华为技术有限公司 | Magnetic powder material, magnetic device, and electronic device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1393972A (en) * | 2001-06-29 | 2003-01-29 | 阿斯莫株式会社 | Motor with wedge magnetic fixed on yoke |
| CN1494195A (en) * | 2002-11-01 | 2004-05-05 | ������������ʽ���� | A motor with a core structure and a three-dimensional structure of the magnetic circuit |
| US20060232160A1 (en) * | 2005-04-14 | 2006-10-19 | Asmo Co., Ltd. | Armature core, armature, method for manufacturing armature core, and method for manufacturing armature |
| CN1874112A (en) * | 2005-06-03 | 2006-12-06 | 富准精密工业(深圳)有限公司 | Stator of motor |
| CN1877961A (en) * | 2005-06-10 | 2006-12-13 | 富准精密工业(深圳)有限公司 | Motor stator |
| CN101162638A (en) * | 2006-09-25 | 2008-04-16 | 松下电器产业株式会社 | Permanent magnet motor, electrical device and method for manufacturing permanent magnet |
| CN101604885A (en) * | 2008-06-10 | 2009-12-16 | 乔智电子股份有限公司 | Method for manufacturing iron core and product thereof |
-
2010
- 2010-05-18 CN CN2010101834144A patent/CN102255409A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1393972A (en) * | 2001-06-29 | 2003-01-29 | 阿斯莫株式会社 | Motor with wedge magnetic fixed on yoke |
| CN1494195A (en) * | 2002-11-01 | 2004-05-05 | ������������ʽ���� | A motor with a core structure and a three-dimensional structure of the magnetic circuit |
| US20060232160A1 (en) * | 2005-04-14 | 2006-10-19 | Asmo Co., Ltd. | Armature core, armature, method for manufacturing armature core, and method for manufacturing armature |
| CN1874112A (en) * | 2005-06-03 | 2006-12-06 | 富准精密工业(深圳)有限公司 | Stator of motor |
| CN1877961A (en) * | 2005-06-10 | 2006-12-13 | 富准精密工业(深圳)有限公司 | Motor stator |
| CN101162638A (en) * | 2006-09-25 | 2008-04-16 | 松下电器产业株式会社 | Permanent magnet motor, electrical device and method for manufacturing permanent magnet |
| CN101604885A (en) * | 2008-06-10 | 2009-12-16 | 乔智电子股份有限公司 | Method for manufacturing iron core and product thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645722A (en) * | 2012-03-30 | 2012-08-22 | 苏州怡信光电科技有限公司 | Zooming lens of image measurement instrument |
| WO2023006124A1 (en) * | 2021-07-30 | 2023-02-02 | 华为技术有限公司 | Magnetic powder material, magnetic device, and electronic device |
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Application publication date: 20111123 |