CN203722359U - Anti-demagnetization motor rotor structure - Google Patents
Anti-demagnetization motor rotor structure Download PDFInfo
- Publication number
- CN203722359U CN203722359U CN201320894037.4U CN201320894037U CN203722359U CN 203722359 U CN203722359 U CN 203722359U CN 201320894037 U CN201320894037 U CN 201320894037U CN 203722359 U CN203722359 U CN 203722359U
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- CN
- China
- Prior art keywords
- demagnetization
- magnet steel
- motor rotor
- magnetic
- copper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model relates to an anti-demagnetization motor rotor structure, comprising a rotor core (1) and magnetic steels (2). The rotor core (1) is laminated by a plurality of circular punched sheets; the outer circumferential surface of the rotor core (1) is circumferentially pasted with the magnetic steels (2); the outer side surface of the magnetic steels (2) is sleeved by a copper magnetic tile jacket (3); the copper magnetic tile jacket (3) is stamped by a copper plate with the thickness of 0.4 mm. The anti-demagnetization motor rotor structure utilizes the characteristics of high conductivity and bad permeability of the magnetic tile jacket to protect the magnetic steels, substantially reduces magnetic steel thermal loss and avoids magnetic steel demagnetization.
Description
Technical field
The utility model relates to electric machine structure field, particularly relates to a kind of motor rotor construction of anti-demagnetization.
Background technology
In the coil of alternating-current permanent-magnet servo motor, be connected with the alternating current changing with certain frequency, along with the variation of electric current, the electromagnetic field that coil produces also constantly changes.Due to the impact of kelvin effect, magnetic pole surfaces current density and the penetration depth of rotor are larger, 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, has greatly shortened the useful life of rotor.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of motor rotor construction of anti-demagnetization, utilizes magnetic shoe overcoat conductivity characteristic high and that magnetic permeability is poor to protect magnet steel, greatly reduces the thermal losses of magnet steel, has avoided magnet steel demagnetization.
The utility model solves the technical scheme that its technical problem adopts: the motor rotor construction that a kind of anti-demagnetization is provided, comprise rotor core and magnet steel, described rotor core is overrided to form by some annular punchings, 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 adopts the copper plate that thickness is 0.4mm to be stamped to form.
Described copper magnetic shoe overcoat is docked and forms up and down by two toroidal shells, on 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.
On the outer circumference surface of described iron core, vertically have a breach.
The cambered surface middle part, inner side of described magnet steel is furnished with a strip projection, and this strip projection is embedded in the breach on iron core.
Between described toroidal shell and magnet steel (2) for hot jacket coordinates.。
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 magnetic shoe and puts outward.
beneficial effect
The utility model 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 characteristic high and that magnetic permeability is poor that input alternating current generation kelvin effect is put from copper magnetic shoe is transferred on magnet steel surface magnet steel is protected; greatly reduce thermal losses; avoid magnet steel to demagnetize because of overheated, motor reprocess frequency and cost all can be therefore and low.
Brief description of the drawings
Fig. 1 is decomposition assembly structure figure of the present utility model;
Fig. 2 is shape assumption diagram of the present utility model.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment are only not used in restriction scope of the present utility model for the utility model is described.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read the content of the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.
As shown in Figure 1-2, execution mode of the present utility model 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 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 it is that the copper plate of 0.4mm is stamped to form that this copper magnetic shoe overcoat 3 adopts thickness.
Described copper magnetic shoe overcoat 3 is docked and forms up and down by two toroidal shells, on described toroidal shell, is furnished with to the radially-protruding limiting section 6 of central shaft with one end of the end face of iron core 1.
On the outer circumference surface of described iron core 1, vertically have a breach 4.
The cambered surface middle part, inner side 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.
Between described toroidal shell and magnet steel 2 for hot jacket coordinates.。
At the outside of magnet steel 2 socket magnetic shoe overcoat; and utilize copper plate conductivity characteristic high and that magnetic permeability is poor that input alternating current generation kelvin effect is put from copper magnetic shoe is transferred on magnet steel surface magnet steel is protected; greatly reduce thermal losses; avoid magnet steel to demagnetize because of overheated, motor reprocess frequency and cost all can be therefore and low.
Claims (5)
1. the motor rotor construction of an anti-demagnetization, comprise rotor core (1) and magnet steel (2), described rotor core (1) is overrided to form by some annular punchings, 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), and this copper magnetic shoe overcoat (3) adopts the copper plate that thickness is 0.4mm to be stamped to form.
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 and forms up and down by two toroidal shells, on described toroidal shell, be 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 1 and 2, is characterized in that: on the outer circumference surface of described iron core (1), vertically have a breach (4).
4. the motor rotor construction of a kind of anti-demagnetization according to claim 1, it is characterized in that: the cambered surface middle part, inner side 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).
5. the motor rotor construction of a kind of anti-demagnetization according to claim 2, is characterized in that: between described toroidal shell and magnet steel (2) for hot jacket coordinates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320894037.4U CN203722359U (en) | 2013-12-31 | 2013-12-31 | Anti-demagnetization motor rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320894037.4U CN203722359U (en) | 2013-12-31 | 2013-12-31 | Anti-demagnetization motor rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203722359U true CN203722359U (en) | 2014-07-16 |
Family
ID=51161482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320894037.4U Expired - Fee Related CN203722359U (en) | 2013-12-31 | 2013-12-31 | Anti-demagnetization motor rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203722359U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762763A (en) * | 2013-12-31 | 2014-04-30 | 宁波菲仕运动控制技术有限公司 | Anti-demagnetization motor rotor structure |
-
2013
- 2013-12-31 CN CN201320894037.4U patent/CN203722359U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762763A (en) * | 2013-12-31 | 2014-04-30 | 宁波菲仕运动控制技术有限公司 | Anti-demagnetization motor rotor structure |
| CN103762763B (en) * | 2013-12-31 | 2016-03-09 | 宁波菲仕运动控制技术有限公司 | A kind of motor rotor construction of anti-demagnetization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20191231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |