CN103762763B - A kind of motor rotor construction of anti-demagnetization - Google Patents
A kind of motor rotor construction of anti-demagnetization Download PDFInfo
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- CN103762763B CN103762763B CN201310755581.5A CN201310755581A CN103762763B CN 103762763 B CN103762763 B CN 103762763B CN 201310755581 A CN201310755581 A CN 201310755581A CN 103762763 B CN103762763 B CN 103762763B
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- magnet steel
- demagnetization
- magnetic shoe
- copper
- rotor core
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Abstract
The present invention relates to a kind of motor rotor construction of anti-demagnetization, comprise rotor core (1) and magnet steel (2), described rotor core (1) has some annular punchings to be overrided to form, the outer circumference surface circumferential array of described rotor core (1) is fitted with magnet steel (2), the lateral surface of described magnet steel (2) is socketed with copper magnetic shoe overcoat (3), and this copper magnetic shoe overcoat (3) employing thickness is that the copper plate of 0.4mm is stamped to form.The present invention utilizes that magnetic shoe overcoat conductivity is high and magnetic permeability is poor characteristic is protected magnet steel, greatly reduces the thermal losses of magnet steel, avoids magnet steel demagnetization.
Description
Technical field
The present invention relates to electric machine structure field, particularly relate to a kind of motor rotor construction of anti-demagnetization.
Background technology
Be connected with the alternating current of certain frequency change in the coil of alternating-current permanent-magnet servo motor, along with the change of electric current, the electromagnetic field that coil produces also constantly changes.Due to the impact of kelvin effect, the magnetic pole surfaces current density of rotor and penetration depth are comparatively large, and thermal losses is higher.In this case, magnet steel is easy to demagnetize because of overheated, causes motor complete failure or cannot reach estimated performance requirement, substantially reducing the useful life of rotor.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of motor rotor construction of anti-demagnetization, utilizes that magnetic shoe overcoat conductivity is high and magnetic permeability is poor characteristic is protected magnet steel, greatly reduces the thermal losses of magnet steel, avoids magnet steel demagnetization.
The technical solution adopted for the present invention to solve the technical problems is: the motor rotor construction providing a kind of anti-demagnetization, comprise rotor core and magnet steel, described rotor core has some annular punchings to be overrided to form, the outer circumference surface circumferential array of described rotor core is fitted with magnet steel, the lateral surface of described magnet steel is socketed with copper magnetic shoe overcoat, and this copper magnetic shoe overcoat employing thickness is that the copper plate of 0.4mm is stamped to form.
Described copper magnetic shoe overcoat is docked up and down by two toroidal shells and forms, and described toroidal shell is furnished with to the radially-protruding limiting section of central shaft with one end of the end face of iron core.
The outer circumference surface of described iron core vertically has a breach.
The inside arc Middle face of described magnet steel is furnished with a strip projection, and this strip projection is embedded in the breach on iron core.
For hot jacket coordinates between described toroidal shell with magnet steel (2).。
It should be noted that, copper plate has fabulous conductivity and low-down magnetic permeability, compared with magnet steel, under same current frequency, has very low penetration depth.Like this, kelvin effect is transferred to outside magnetic shoe and puts.
beneficial effect
The present invention relates to a kind of motor rotor construction of anti-demagnetization; at the outside of magnet steel socket magnetic shoe overcoat; and utilize copper plate conductivity high and input alternating current is produced kelvin effect and transfers to from magnet steel surface to overlap copper magnetic shoe and protect magnet steel by characteristic that magnetic permeability is poor; greatly reduce thermal losses; avoid magnet steel to demagnetize because of overheated, motor reprocess frequency and cost all can be therefore and comparatively low.
Accompanying drawing explanation
Fig. 1 is decomposition assembly structure figure of the present invention;
Fig. 2 is shape assumption diagram of the present invention.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
As shown in Figure 1-2, embodiments of the present invention relate to a kind of motor rotor construction of anti-demagnetization, comprise rotor core 1 and magnet steel 2, described rotor core 1 has some annular punchings to be overrided to form, the excircle side circumferential array of described rotor core 1 is fitted with magnet steel 2, the lateral surface of described magnet steel 2 is socketed with copper magnetic shoe overcoat 3, and this copper magnetic shoe overcoat 3 adopts thickness to be that the copper plate of 0.4mm is stamped to form.
Described copper magnetic shoe overcoat 3 is docked up and down by two toroidal shells and forms, and described toroidal shell is furnished with one end of the end face of iron core 1 to the radially-protruding limiting section 6 of central shaft.
The outer circumference surface of described iron core 1 vertically has a breach 4.
The inside arc Middle face of described magnet steel 2 is furnished with a strip projection 5, and this strip projection 5 is embedded in the breach 4 on iron core 1.
For hot jacket coordinates between described toroidal shell with magnet steel 2.。
At the outside of magnet steel 2 socket magnetic shoe overcoat; and utilize copper plate conductivity high and input alternating current is produced kelvin effect and transfers to from magnet steel surface to overlap copper magnetic shoe and protect magnet steel by characteristic that magnetic permeability is poor; greatly reduce thermal losses; avoid magnet steel to demagnetize because of overheated, motor reprocess frequency and cost all can be therefore and comparatively low.
Claims (3)
1. the motor rotor construction of an anti-demagnetization, comprise rotor core (1) and magnet steel (2), described rotor core (1) has some annular punchings to be overrided to form, the outer circumference surface circumferential array of described rotor core (1) is fitted with magnet steel (2), it is characterized in that, the lateral surface of described magnet steel (2) is socketed with copper magnetic shoe overcoat (3), this copper magnetic shoe overcoat (3) employing thickness is that the copper plate of 0.4mm is stamped to form, the outer circumference surface of described iron core (1) vertically has a breach (4), the inside arc Middle face of described magnet steel (2) is furnished with a strip projection (5), this strip projection (5) is embedded in the breach (4) on iron core (1).
2. the motor rotor construction of a kind of anti-demagnetization according to claim 1, it is characterized in that: described copper magnetic shoe overcoat (3) is docked up and down by two toroidal shells and formed, and described toroidal shell is furnished with to the radially-protruding limiting section of central shaft (6) with one end of the end face of iron core (1).
3. the motor rotor construction of a kind of anti-demagnetization according to claim 2, is characterized in that: for hot jacket coordinates between described toroidal shell with magnet steel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310755581.5A CN103762763B (en) | 2013-12-31 | 2013-12-31 | A kind of motor rotor construction of anti-demagnetization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310755581.5A CN103762763B (en) | 2013-12-31 | 2013-12-31 | A kind of motor rotor construction of anti-demagnetization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103762763A CN103762763A (en) | 2014-04-30 |
| CN103762763B true CN103762763B (en) | 2016-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310755581.5A Active CN103762763B (en) | 2013-12-31 | 2013-12-31 | A kind of motor rotor construction of anti-demagnetization |
Country Status (1)
| Country | Link |
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| CN (1) | CN103762763B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300129A (en) * | 1999-12-15 | 2001-06-20 | 比恩－空气有限公司 | Brush-less electric machinery with device for detecting angular position of rotor |
| CN201113594Y (en) * | 2007-09-26 | 2008-09-10 | 宁波菲仕电机技术有限公司 | Alternating-current permanent magnetism servo-motor silicon steel sheet rotor |
| CN201393102Y (en) * | 2009-04-14 | 2010-01-27 | 无锡市亨达电机有限公司 | Copper rotor of permanent magnet synchronous motor |
| CN203722359U (en) * | 2013-12-31 | 2014-07-16 | 宁波菲仕运动控制技术有限公司 | Anti-demagnetization motor rotor structure |
-
2013
- 2013-12-31 CN CN201310755581.5A patent/CN103762763B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300129A (en) * | 1999-12-15 | 2001-06-20 | 比恩－空气有限公司 | Brush-less electric machinery with device for detecting angular position of rotor |
| CN201113594Y (en) * | 2007-09-26 | 2008-09-10 | 宁波菲仕电机技术有限公司 | Alternating-current permanent magnetism servo-motor silicon steel sheet rotor |
| CN201393102Y (en) * | 2009-04-14 | 2010-01-27 | 无锡市亨达电机有限公司 | Copper rotor of permanent magnet synchronous motor |
| CN203722359U (en) * | 2013-12-31 | 2014-07-16 | 宁波菲仕运动控制技术有限公司 | Anti-demagnetization motor rotor structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103762763A (en) | 2014-04-30 |
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Effective date of registration: 20230506 Address after: 300 000 Block G 3-4001, No. 6 Huafeng Road, Huaming High-tech Industrial Zone, Dongli District, Tianjin Patentee after: CHINA COFISH ELECTRIC TECHNOLOGY (TIANJIN) Co.,Ltd. Address before: 315336 No. 248 Binhai Second Road, Hangzhou Bay New Area, Ningbo City, Zhejiang Province Patentee before: PHYSIS MOTION CONTROL NINGBO Co.,Ltd. |