CN105680592B - The magnetic field orientating structure of radial 2 pole plastic magnetic rotors - Google Patents
The magnetic field orientating structure of radial 2 pole plastic magnetic rotors Download PDFInfo
- Publication number
- CN105680592B CN105680592B CN201610193955.2A CN201610193955A CN105680592B CN 105680592 B CN105680592 B CN 105680592B CN 201610193955 A CN201610193955 A CN 201610193955A CN 105680592 B CN105680592 B CN 105680592B
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- CN
- China
- Prior art keywords
- magnetic field
- field orientating
- inner shield
- permanent magnet
- shield ring
- 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
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- 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 invention discloses can produce the magnetic field orientating structure for meeting the radial 2 pole plastic magnetic rotors of sinusoidal control rotor requirement, including outer retaining ring and inner shield ring, two blocks of opposite polarity magnetic field orientating magnetites are provided in the space formed between outer retaining ring and inner shield ring, it is cut off respectively by partition at the both ends of two magnetic field orientating magnetites, the magnetic field orientating magnetite is rare-earth permanent magnet and the permanent magnet unit for being divided into several equal parts, adjacent permanent magnet body unit is close together, the inner wall of inner shield ring is circle, the outer wall of inner shield ring is ellipse and meets formula X2/a2+Y2/b2=1, wherein a > b, and long axis is on the south poles line of demarcation in magnetic field.The invention has the advantages that structure is simple, but the rotor for meeting sinusoidal control motor can be produced, product qualification rate is high.
Description
Technical field
The present invention relates to a kind of magnetic field orientating structures of 2 pole plastic magnetic rotor of radial direction.
Background technique
Radial 2 pole plastic magnetic rotor die alignment magnetic field structures are usually to use structure shown in Fig. 1, including outer retaining ring 1 and interior
Retaining ring 2 is provided with two blocks of opposite polarity magnetic field orientating magnetites 5 in the annular space formed between outer retaining ring 1 and inner shield ring 2,
The both ends of two magnetic field orientating magnetites 5 pass through partition 3 respectively and cut off, the plastic magnetic rotor worked it out so not instead of sine wave, horse
Saddle type cannot meet the requirements for the motor control of sine control, using such rotor, can generate vibration.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of can produce meets sinusoidal control rotor requirement
The magnetic field orientating structure of radial 2 pole plastic magnetic rotors.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows: a kind of magnetic field of 2 pole plastic magnetic rotor of radial direction takes
To structure, including outer retaining ring and inner shield ring, be provided in the space formed between outer retaining ring and inner shield ring two pieces it is opposite polarity
The both ends of magnetic field orientating magnetite, two magnetic field orientating magnetites are cut off by partition respectively, and the magnetic field orientating magnetite is rare earth permanent magnet
Body and the permanent magnet unit for being divided into several equal parts, adjacent permanent magnet body unit are close together, and the inner wall of inner shield ring is circle,
The outer wall of inner shield ring is ellipse and meets formula X2/a2+Y2/b2=1, wherein a > b, and south poles of the long axis in magnetic field are demarcated
On line.
The beneficial effects of the present invention are: structure is simple, but the rotor for meeting sinusoidal control motor can be produced, product closes
Lattice rate is high.
Detailed description of the invention
Fig. 1 is the structure chart of alignment magnetic field structure in background technique；
Fig. 2 is the structure chart of the magnetic field orientating structure of radial 2 pole plastic magnetic rotors of the invention.
In figure: 1, outer retaining ring, 2, inner shield ring, 3, partition, 4, permanent magnet unit, 5, magnetic field orientating magnetite.
Specific embodiment
With reference to the accompanying drawing, detailed description of the present invention specific embodiment.
As shown in Fig. 2, the magnetic field orientating structure of 2 pole plastic magnetic rotor of radial direction of the present invention, including outer retaining ring 1 and interior gear
2 are enclosed, is provided with two blocks of opposite polarity magnetic field orientating magnetites in the space formed between outer retaining ring 1 and inner shield ring 2, two magnetic fields take
Pass through partition 3 respectively to the both ends of magnetite to cut off, the magnetic field orientating magnetite is rare-earth permanent magnet and is divided into several equal parts
Permanent magnet unit 4, adjacent permanent magnet body unit 4 is close together, and the inner wall of inner shield ring 2 is circle, and the outer wall of inner shield ring is ellipse
It is round and meet formula X2/a2+Y2/b2=1, wherein a > b, and long axis is on the south poles line of demarcation in magnetic field.
The invention has the advantages that structure is simple, but the rotor for meeting sinusoidal control motor, product qualification rate can be produced
It is high.
Claims (1)
1. the magnetic field orientating structure of radial 2 pole plastic magnetic rotors, for producing sinusoidal control rotor, including outer retaining ring and interior gear
It encloses, is provided with two blocks of opposite polarity magnetic field orientating magnetites, two magnetic field orientatings in the space formed between outer retaining ring and inner shield ring
It is cut off respectively by partition at the both ends of magnetite, it is characterised in that: the magnetic field orientating magnetite is rare-earth permanent magnet and is divided into
The permanent magnet unit of several equal parts, adjacent permanent magnet body unit are close together, and the inner wall of inner shield ring is circle, the outer wall of inner shield ring
For ellipse and meet formula X2/a2+Y2/b2=1, wherein a > b, and long axis is on the south poles line of demarcation 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 CN105680592A (en) | 2016-06-15 |
| CN105680592B true 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (3)
| 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 |
| CN100423140C (en) * | 2004-12-21 | 2008-10-01 | Tdk株式会社 | Cylindrical sintered magnet, motor and method for producing cylindrical sintered magnet |
| CN101980420B (en) * | 2010-11-02 | 2012-01-11 | 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 |
-
2016
- 2016-03-31 CN CN201610193955.2A patent/CN105680592B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
|---|---|
| CN105680592A (en) | 2016-06-15 |
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