CN105680592A - Magnetic field orientation structure of radial 2-pole plastic-magnetic rotor - Google Patents
Magnetic field orientation structure of radial 2-pole plastic-magnetic rotor Download PDFInfo
- Publication number
- CN105680592A CN105680592A CN201610193955.2A CN201610193955A CN105680592A CN 105680592 A CN105680592 A CN 105680592A CN 201610193955 A CN201610193955 A CN 201610193955A CN 105680592 A CN105680592 A CN 105680592A
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- CN
- China
- Prior art keywords
- magnetic field
- field orientation
- retainer ring
- rotor
- permanent magnet
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The present invention discloses a magnetic field orientation structure of a radial 2-pole plastic-magnetic rotor. The magnetic field orientation structure can satisfy the requirements of the rotor of a sinusoidal control motor. The magnetic field orientation structure includes an outer retainer ring and an inner retainer ring; two magnetic field orientation magnets of which the polarities are opposite are arranged in a space formed between the outer retainer ring and the inner retainer ring; two ends of one magnetic field orientation magnet of the two magnetic field orientation magnets are cut off from two ends of the other magnetic field orientation magnet through separation boards; the magnetic field orientation magnets are rare earth permanent magnets are equally divided into a plurality of equal permanent magnet units; adjacent permanent magnet units are attached to each other; the inner wall of the inner retainer ring is round; the outer wall of the inner retainer ring is an oval; the oval satisfies a formula that X2/a2+Y2/B2=1, wherein a>b; and the long axis of the oval is located on the dividing line of the north pole and south pole of a magnetic field. The magnetic field orientation structure of the invention is simple in structure. With the magnetic field orientation structure adopted, a rotor which can satisfy requirements of a sinusoidal control motor can be manufactured, and the qualified rate of the product is high.
Description
Technical field
The present invention relates to the magnetic field orientating structure of a kind of radial 2 pole plastic magnetic rotors.
Background technology
Radial 2 pole plastic magnetic rotor die alignment magnetic field structures normally adopt structure shown in Fig. 1, comprise outer back-up ring 1 and inner shield ring 2, it is provided with two blocks of opposite polarity magnetic field orientating magnetites 5 in the annular space formed between outer back-up ring 1 and inner shield ring 2, the two ends of two magnetic field orientating magnetites 5 are cut off by dividing plate 3 respectively, and the plastic magnetic rotor worked it out like this is not sinusoidal wave, but the shape of a saddle, for the electric machine control of sine control, requirement can not be met, it may also be useful to such rotor, vibration can be produced.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of magnetic field orientating structure that can produce the radial direction 2 pole plastic magnetic rotor meeting sinusoidal control motor rotor requirement.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the magnetic field orientating structure of a kind of radial 2 pole plastic magnetic rotors, comprise outer back-up ring and inner shield ring, it is provided with two blocks of opposite polarity magnetic field orientating magnetites in the space formed between outer back-up ring and inner shield ring, the two ends of two magnetic field orientating magnetites are cut off by dividing plate respectively, described magnetic field orientating magnetite is rare-earth permanent magnet and the permanent magnet unit being divided into some deciles, adjacent permanent magnet body unit is close together, the inwall of inner shield ring is circular, the outer wall of inner shield ring is for ellipse and meets formula X2/a2+Y2/b2=1, wherein a > b, and major axis is on the south poles line of delimitation in magnetic field.
The invention has the beneficial effects as follows: structure is simple, but the rotor meeting sinusoidal control motor can be produced, conforming product rate height.
Accompanying drawing explanation
Fig. 1 is the structure iron of alignment magnetic field structure in background technology;
Fig. 2 is the structure iron of the magnetic field orientating structure of the radial 2 pole plastic magnetic rotors of the present invention.
In figure: 1, outer back-up ring, 2, inner shield ring, 3, dividing plate, 4, permanent magnet unit, 5, magnetic field orientating magnetite.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the invention scheme is described in detail.
As shown in Figure 2, the magnetic field orientating structure of radial 2 pole plastic magnetic rotors of the present invention, comprise outer back-up ring 1 and inner shield ring 2, it is provided with two blocks of opposite polarity magnetic field orientating magnetites in the space formed between outer back-up ring 1 and inner shield ring 2, the two ends of two magnetic field orientating magnetites are cut off by dividing plate 3 respectively, described magnetic field orientating magnetite is rare-earth permanent magnet and the permanent magnet unit 4 being divided into some deciles, adjacent permanent magnet body unit 4 is close together, the inwall of inner shield ring 2 is circular, the outer wall of inner shield ring is for ellipse and meets formula X2/a2+Y2/b2=1, wherein a > b, and major axis is on the south poles line of delimitation in magnetic field.
It is an advantage of the invention that: structure is simple, but the rotor meeting sinusoidal control motor can be produced, conforming product rate height.
Claims (1)
1. the magnetic field orientating structure of radial 2 pole plastic magnetic rotors, comprise outer back-up ring and inner shield ring, it is provided with two blocks of opposite polarity magnetic field orientating magnetites in the space formed between outer back-up ring and inner shield ring, the two ends of two magnetic field orientating magnetites are cut off by dividing plate respectively, it is characterized in that: described magnetic field orientating magnetite is rare-earth permanent magnet and the permanent magnet unit being divided into some deciles, adjacent permanent magnet body unit is close together, the inwall of inner shield ring is circular, the outer wall of inner shield ring is for ellipse and meets formula X2/a2+Y2/b2=1, wherein a > b, and major axis is on the south poles line of delimitation in magnetic field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610193955.2A CN105680592B (en) | 2016-03-31 | 2016-03-31 | The magnetic field orientating structure of radial 2 pole plastic magnetic rotors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610193955.2A CN105680592B (en) | 2016-03-31 | 2016-03-31 | The magnetic field orientating structure of radial 2 pole plastic magnetic rotors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105680592A true CN105680592A (en) | 2016-06-15 |
| CN105680592B CN105680592B (en) | 2019-04-26 |
Family
ID=56224848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610193955.2A Active CN105680592B (en) | 2016-03-31 | 2016-03-31 | The magnetic field orientating structure of radial 2 pole plastic magnetic rotors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105680592B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006073674A (en) * | 2004-08-31 | 2006-03-16 | Tdk Corp | Ring-shaped magnet and magnet rotor using the same and actuator |
| CN1794373A (en) * | 2004-12-21 | 2006-06-28 | Tdk株式会社 | Cylindrical sintered magnet, motor and method for producing cylindrical sintered magnet |
| CN101980420A (en) * | 2010-11-02 | 2011-02-23 | 张家港倍恩特磁塑科技有限公司 | Magnetic circuit structure of orientation magnetic field in plastic-magnetic rotor die |
| CN206506422U (en) * | 2016-03-31 | 2017-09-19 | 张家港倍恩特磁塑科技有限公司 | The radially magnetic field orientating structure of 2 pole plastic magnetic rotors |
-
2016
- 2016-03-31 CN CN201610193955.2A patent/CN105680592B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006073674A (en) * | 2004-08-31 | 2006-03-16 | Tdk Corp | Ring-shaped magnet and magnet rotor using the same and actuator |
| CN1794373A (en) * | 2004-12-21 | 2006-06-28 | Tdk株式会社 | Cylindrical sintered magnet, motor and method for producing cylindrical sintered magnet |
| CN101980420A (en) * | 2010-11-02 | 2011-02-23 | 张家港倍恩特磁塑科技有限公司 | Magnetic circuit structure of orientation magnetic field in plastic-magnetic rotor die |
| CN206506422U (en) * | 2016-03-31 | 2017-09-19 | 张家港倍恩特磁塑科技有限公司 | The radially magnetic field orientating structure of 2 pole plastic magnetic rotors |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105680592B (en) | 2019-04-26 |
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