CN109560634B - Halbach type permanent magnet outer rotor mounting structure - Google Patents
Halbach type permanent magnet outer rotor mounting structure Download PDFInfo
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- CN109560634B CN109560634B CN201811568298.0A CN201811568298A CN109560634B CN 109560634 B CN109560634 B CN 109560634B CN 201811568298 A CN201811568298 A CN 201811568298A CN 109560634 B CN109560634 B CN 109560634B
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- China
- Prior art keywords
- rotor
- permanent magnet
- permanent magnets
- end cover
- shell
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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
- H02K1/2786—Outer rotors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a Halbach type permanent magnet outer rotor mounting structure, which comprises a rotor shell, a rotor end cover and a plurality of permanent magnets, wherein the rotor shell is provided with a plurality of permanent magnets; the inner wall of the rotor shell is provided with a plurality of slots for mounting the permanent magnets, the slots are uniformly distributed around the axis of the rotor shell, the slots extend to the front end side of the rotor shell, the bottoms of the permanent magnets are in clearance fit with the slots, and a spacing space is reserved between the adjacent permanent magnets; the inner circumference of the rotor end cover is provided with a plurality of locking insertion strips, the rotor end cover is fixedly arranged on the front end side of the rotor shell, so that the locking insertion strips are inserted into a spacing space between two adjacent permanent magnets, and the locking insertion strips are in interference fit with the two adjacent permanent magnets; the permanent magnet is placed through the design slot on the rotor shell, the rotor end cover and the locking inserting strip are matched with the rotor shell and the permanent magnet, the permanent magnet is fixed, the whole structure is simple, the operation is convenient, the assembly efficiency is high, the permanent magnet after assembly is stable and firm, and the quality is guaranteed.
Description
Technical Field
The invention relates to a Halbach type permanent magnet outer rotor mounting structure.
Background
The outer rotor of the outer rotor motor is generally composed of a rotor housing and permanent magnets located inside the rotor housing, and the permanent magnets are generally fixed on the inner wall of the rotor housing by means of bonding, screw fastening, or the like, thereby forming an excitation magnetic field of the rotor; the permanent magnets are installed and fixed only through bonding, the bonding firmness is poor, the reliability is low, and the quality cannot be guaranteed; and the screw fastening mode is complex to operate, the workload is large, and the efficiency is low.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a Halbach type permanent magnet outer rotor mounting structure.
In order to achieve the purpose, the invention adopts the technical scheme that: a Halbach type permanent magnet outer rotor mounting structure comprises a rotor shell, a rotor end cover and a plurality of permanent magnets; the rotor shell is cylindrical, a plurality of slots for mounting the permanent magnets are formed in the inner wall of the rotor shell, the slots are uniformly distributed around the axis of the rotor shell, the slots extend to the front end side of the rotor shell, the bottoms of the permanent magnets are in clearance fit with the slots, and a spacing space is reserved between every two adjacent permanent magnets; the rotor end cover is annular, a plurality of locking insertion strips are arranged on the inner circumference of the rotor end cover, the rotor end cover is fixedly installed on the front end side of the rotor shell, the locking insertion strips are inserted into the space between the adjacent permanent magnets, and the locking insertion strips are in interference fit with the two adjacent permanent magnets.
Preferably, the slot is in a dovetail groove structure.
Preferably, the tips of the permanent magnets protrude toward the inside of the rotor case.
Preferably, the rotor end cover and the rotor shell have the same inner diameter and outer diameter.
Preferably, the insertion end of the locking slip is chamfered.
Preferably, the length of the slot is 1-2mm longer than that of the permanent magnet, a plurality of compensation pads which correspond to the permanent magnet one to one are arranged on one side, matched with the rotor shell, of the rotor end cover, the compensation pads are made of flexible materials, and the thickness of the compensation pads is 2-3 mm.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
according to the Halbach type permanent magnet outer rotor mounting structure, the permanent magnet is placed by the slot designed on the rotor shell, and the rotor end cover and the locking insertion strip are matched with the rotor shell and the permanent magnet to fix the permanent magnet.
Drawings
The technical scheme of the invention is further explained by combining the accompanying drawings as follows:
FIG. 1 is a schematic view of an assembly structure of a rotor shell and a permanent magnet according to the present invention;
FIG. 2 is a schematic view of a rotor end cover according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1-2, the Halbach type permanent magnet outer rotor mounting structure according to the present invention includes a rotor housing 1, a rotor end cover 2, and a plurality of permanent magnets 3; the rotor shell 1 is cylindrical, a plurality of slots 4 for mounting the permanent magnets 3 are formed in the inner wall of the rotor shell 1, the slots 4 are uniformly distributed around the axis of the rotor shell 1, the slots 4 extend to the front end side of the rotor shell 1, so that the permanent magnets 3 can be inserted into the slots 4 from the front end side of the rotor shell 1, the bottoms of the permanent magnets 3 are in clearance fit with the slots 4, the mounting is convenient, and a spacing space is reserved between every two adjacent permanent magnets 3; the slot 4 is in a dovetail groove structure, so that the permanent magnet 3 cannot fall out of the slot 4 after being inserted.
The rotor end cover 2 is annular, and the inner diameter and the outer diameter of the rotor end cover 2 are equal to those of the rotor shell 1, so that the rotor end cover and the rotor shell can be aligned when being installed; the inner circumference of the rotor end cover 2 is provided with a plurality of locking insertion strips 5, the rotor end cover 2 is fixedly arranged on the front end side of the rotor shell 1 through screws, so that the locking insertion strips 5 are inserted into the spacing space between the adjacent permanent magnets 3, and the insertion ends of the locking insertion strips 5 are subjected to fillet or chamfer treatment to facilitate the insertion; because the top end of the permanent magnet 3 is narrower than the bottom end, and the locking insertion strip 5 is in interference fit with the two adjacent permanent magnets 3, the permanent magnets 3 can be fixed after the locking insertion strip 5 is inserted.
The top end of the permanent magnet 3 protrudes towards the inner side of the rotor shell 1, so that the magnetic field distribution is close to a sine shape, the permanent magnet magnetomotive force is increased, and the thermal parameter is reduced.
As a preferable mode, the length of the slot 4 is 1-2mm longer than that of the permanent magnet 3, that is, the insertion depth of the permanent magnet 3 is slightly larger than the length of the permanent magnet 3; the rotor end cover 2 is provided with a plurality of compensation pads 6 corresponding to the permanent magnets 3 one by one on one side matched with the rotor shell 1, the compensation pads 6 are made of flexible materials, the thickness of the compensation pads 6 is 2-3mm, the deformation amount is about 1mm, and the stability of the assembly structure is further improved.
The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (4)
1. The utility model provides a Halbach type permanent magnetism external rotor mounting structure which characterized in that: the permanent magnet rotor comprises a rotor shell (1), a rotor end cover (2) and a plurality of permanent magnets (3); the rotor shell (1) is cylindrical, a plurality of slots (4) for mounting the permanent magnets (3) are formed in the inner wall of the rotor shell (1), the slots (4) are uniformly distributed around the axis of the rotor shell (1), the slots (4) extend to the front end side of the rotor shell (1), the bottoms of the permanent magnets (3) are in clearance fit with the slots (4), and a spacing space is reserved between every two adjacent permanent magnets (3); the rotor end cover (2) is annular, a plurality of locking inserting strips (5) are arranged on the inner circumference of the rotor end cover (2), the rotor end cover (2) is fixedly installed on the front end side of the rotor shell (1), the locking inserting strips (5) are inserted into a space between every two adjacent permanent magnets (3), and the locking inserting strips (5) are in interference fit with the two adjacent permanent magnets (3); the slot (4) is in a dovetail groove structure; the top end of the permanent magnet (3) protrudes towards the inner side of the rotor shell (1).
2. The Halbach permanent magnet outer rotor mounting structure of claim 1, wherein: and the inner diameter and the outer diameter of the rotor end cover (2) are equal to those of the rotor shell (1).
3. The Halbach permanent magnet outer rotor mounting structure of claim 1, wherein: the insertion end of the locking insertion strip (5) is chamfered.
4. The Halbach permanent magnet outer rotor mounting structure of claim 1, wherein: the length of the slot (4) is 1-2mm longer than that of the permanent magnet (3), one side of the rotor end cover (2) matched with the rotor shell (1) is provided with a plurality of compensation pads (6) which are in one-to-one correspondence with the permanent magnet (3), the compensation pads (6) are made of flexible materials, and the thickness of the compensation pads (6) is 2-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811568298.0A CN109560634B (en) | 2018-12-21 | 2018-12-21 | Halbach type permanent magnet outer rotor mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811568298.0A CN109560634B (en) | 2018-12-21 | 2018-12-21 | Halbach type permanent magnet outer rotor mounting structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109560634A CN109560634A (en) | 2019-04-02 |
| CN109560634B true CN109560634B (en) | 2021-05-28 |
Family
ID=65870636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811568298.0A Active CN109560634B (en) | 2018-12-21 | 2018-12-21 | Halbach type permanent magnet outer rotor mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109560634B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202183648U (en) * | 2011-07-20 | 2012-04-04 | 苏州泰铎电气有限公司 | Surface-mounted permanent magnet motor and internal rotor and stamped piece of surface-mounted permanent magnet motor |
| CN105703602A (en) * | 2016-03-22 | 2016-06-22 | 哈尔滨工业大学 | Inner closed type radial flux magnetic transmission mechanism for underwater direct-driven propeller |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204089387U (en) * | 2014-08-21 | 2015-01-07 | 江西工埠机械有限责任公司 | The permanent magnet embedding structure of external rotor electric machine |
| CN204244046U (en) * | 2014-12-15 | 2015-04-01 | 苏州汇川技术有限公司 | Magneto and external rotor |
| CN106300736A (en) * | 2016-09-14 | 2017-01-04 | 赵辉 | A kind of permanent magnet mounting structure of reel motor |
| CN107104528A (en) * | 2017-05-09 | 2017-08-29 | 苏州腾冉电气设备股份有限公司 | A kind of high-performance Halbach type p-m rotors for flywheel energy storage system |
| CN209516767U (en) * | 2018-12-21 | 2019-10-18 | 苏州腾冉电气设备股份有限公司 | A kind of Halbach type permanent-magnetic outer rotor mounting structure |
-
2018
- 2018-12-21 CN CN201811568298.0A patent/CN109560634B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202183648U (en) * | 2011-07-20 | 2012-04-04 | 苏州泰铎电气有限公司 | Surface-mounted permanent magnet motor and internal rotor and stamped piece of surface-mounted permanent magnet motor |
| CN105703602A (en) * | 2016-03-22 | 2016-06-22 | 哈尔滨工业大学 | Inner closed type radial flux magnetic transmission mechanism for underwater direct-driven propeller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109560634A (en) | 2019-04-02 |
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