CN111697728A - Permanent magnet motor rotor - Google Patents
Permanent magnet motor rotor Download PDFInfo
- Publication number
- CN111697728A CN111697728A CN202010652185.XA CN202010652185A CN111697728A CN 111697728 A CN111697728 A CN 111697728A CN 202010652185 A CN202010652185 A CN 202010652185A CN 111697728 A CN111697728 A CN 111697728A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- magnetic steel
- steel sheet
- steel sheets
- 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
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
Abstract
The invention relates to a permanent magnet motor rotor, which comprises a cylindrical iron core, a permanent magnet fixedly arranged on the periphery of the iron core and a sheath arranged on the periphery of the permanent magnet in an interference fit manner, wherein the permanent magnet is formed by closely splicing a plurality of magnetic steel sheets, each magnetic steel sheet is divided into a plurality of groups, each group comprises a plurality of magnetic steel sheets, the magnetic steel sheets in each group are arranged along the direction parallel to the axial lead of the iron core, each group comprises end magnetic steel sheets at two ends and a middle magnetic steel sheet arranged between the two end magnetic steel sheets, the outer side surfaces of the end magnetic steel sheets are unfolded to form a right trapezoid, the outer side surfaces of the middle magnetic steel sheets are unfolded to form a parallelogram, and the outer side surfaces of all the magnetic steel. The permanent magnet in the rotor is formed by tightly splicing a plurality of special-shaped magnetic steel sheets, the problem that the whole circle of magnetic steel sheets rotates is solved, the strength of the whole rotor is ensured, the whole circle of circumferential magnetic steel sheets can be prevented from rotating, the stability of a magnetic field is improved, and the permanent magnet rotor is suitable for being popularized and applied in a permanent magnet motor.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a permanent magnet motor rotor.
Background
A surface-mounted permanent magnet motor rotor generally includes an iron core, a permanent magnet, and a sheath. In the conventional technology, the permanent magnet comprises a plurality of arc-shaped magnetic steel sheets which are arranged into a plurality of circles along the circumferential direction, but because all the magnetic steel sheets are identical in specification and size and the outer side surface of each magnetic steel sheet is unfolded into a rectangular shape, when a motor is machined or operated, the magnetic steel sheets of the whole circle in the circumferential direction rotate, and the magnetic field distribution is disordered.
Disclosure of Invention
The invention aims to provide a permanent magnet motor rotor, wherein a permanent magnet is formed by closely splicing a plurality of special-shaped magnetic steel sheets, the problem that the whole circle of magnetic steel sheets rotates is solved, the strength of the whole rotor is ensured, and the circumferential whole circle of magnetic steel sheets can be prevented from rotating, so that the stability of a magnetic field is improved.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a permanent magnet motor rotor, includes cylindric iron core, fixed mounting install the permanent magnet of the periphery of iron core and interference fit ground install the sheath of the periphery of permanent magnet, the permanent magnet is formed by the tight concatenation of polylith magnet steel sheet subsides, these the magnet steel sheet divide into a plurality of groups, includes the polylith in every group the magnet steel sheet is every in every group the magnet steel sheet is along being on a parallel with the tip magnet steel sheet and the range including both ends are two in the direction range of the axial lead of iron core middle magnet steel sheet between the tip magnet steel sheet, the lateral surface of tip magnet steel sheet is right trapezoid after launching, be parallelogram after the lateral surface of middle magnet steel sheet launches, whole in every group be the rectangle after the lateral surface of magnet steel sheet launches.
Optionally, the outer side surface of the middle magnetic steel sheet is in a diamond shape after being unfolded.
Optionally, the length of the upper bottom of the right trapezoid corresponding to the end magnetic steel sheet is smaller than the side length of the rhombus of the middle magnetic steel sheet, and the length of the lower bottom of the right trapezoid corresponding to the end magnetic steel sheet is larger than the side length of the rhombus of the middle magnetic steel sheet.
Optionally, the iron core is a hollow structure capable of being sleeved on the rotating shaft.
Optionally, the permanent magnet is fixedly mounted on the iron core through an adhesive layer.
The invention has the beneficial effects that: the permanent magnet in the permanent magnet motor rotor of the design is formed by tightly splicing the plurality of special-shaped magnetic steel sheets in a sticking manner, the problem that the whole circle of magnetic steel sheets rotates is solved, the strength of the whole rotor is ensured, and the whole circle of magnetic steel sheets in the circumferential direction can be prevented from rotating, so that the stability of a magnetic field is improved, and the permanent magnet motor rotor is suitable for being popularized and applied in the permanent magnet motor.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a permanent magnet motor rotor according to the present invention;
fig. 2 is a schematic view of the permanent magnet motor rotor of the present invention with the outer side surface thereof unfolded.
Description of the drawings: 1-iron core, 2-sheath, 3-end magnetic steel sheet, 4-middle magnetic steel sheet, and 5-adhesive layer.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 1 and 2, a permanent magnet motor rotor, including cylindric iron core 1, fixed mounting install permanent magnet and the interference fit ground of the periphery of iron core 1 installs sheath 2 in the periphery of permanent magnet, the permanent magnet is formed by the tight concatenation of polylith magnetism steel sheet subsides, these magnetism steel sheet divide into a plurality of groups, includes the polylith in every group magnetism steel sheet, in every group the magnetism steel sheet is along being on a parallel with tip magnetism steel sheet 3 and the range that includes both ends in every group are arranged to the direction of the axial lead of iron core 1 is two middle magnetism steel sheet 4 between the tip magnetism steel sheet 3, be right trapezoid after the lateral surface of tip magnetism steel sheet 3 expandes, be parallelogram after the lateral surface of middle magnetism steel sheet 4 expandes, whole in every group be the rectangle after the lateral surface of magnetism steel sheet expandes.
More specifically, the outer side surface of the middle magnetic steel sheet 4 is in a rhombus shape after being unfolded, the length of the upper bottom of the right trapezoid corresponding to the end magnetic steel sheet 3 is smaller than the side length of the rhombus of the middle magnetic steel sheet 4, the length of the lower bottom of the right trapezoid corresponding to the end magnetic steel sheet 3 is larger than the side length of the rhombus of the middle magnetic steel sheet 4, the iron core 1 is in a hollow structure capable of being sleeved on the rotating shaft, and the permanent magnet is fixedly mounted on the iron core 1 through the bonding layer 5.
When the permanent magnet is used, the magnetic steel sheets in the permanent magnet are tightly arranged one by one and fixed on the periphery of the iron core 1 through the adhesive layer 5, and then the sheath 2 is sleeved on the periphery of the permanent magnet in an interference fit mode.
In summary, the permanent magnet motor rotor according to the technical scheme of the invention comprises an iron core, a permanent magnet and a sheath, wherein the permanent magnet is formed by closely splicing a plurality of special-shaped magnetic steel sheets, so that the problem of rotation of the whole circle of magnetic steel sheets is solved, the strength of the whole rotor is ensured, and the rotation of the whole circle of circumferential magnetic steel sheets can be prevented, thereby improving the stability of a magnetic field, and the permanent magnet motor rotor is suitable for being popularized and applied in a permanent magnet motor.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
Claims (5)
1. Permanent-magnet machine rotor, its characterized in that, including cylindric iron core, fixed mounting install the permanent magnet of the periphery of iron core and interference fit ground the sheath of the periphery of permanent magnet, the permanent magnet is formed by the tight concatenation of polylith magnet steel sheet subsides, these the magnet steel sheet divide into a plurality of groups, includes the polylith in every group the magnet steel sheet, in every group the magnet steel sheet is along being on a parallel with tip magnet steel sheet and the range including both ends are two in the direction range of the axial lead of iron core middle magnet steel sheet between the tip magnet steel sheet, the lateral surface of tip magnet steel sheet is right trapezoid after launching, be parallelogram after the lateral surface of middle magnet steel sheet launches, whole in every group the lateral surface of magnet steel sheet is the rectangle after launching.
2. The permanent magnet motor rotor as claimed in claim 1, wherein the outer side of said middle magnetic steel sheet is diamond-shaped after being unfolded.
3. The rotor of a permanent magnet motor according to claim 2, wherein the length of the upper bottom of the right trapezoid corresponding to the end magnetic steel sheets is smaller than the side length of the rhombus of the middle magnetic steel sheets, and the length of the lower bottom of the right trapezoid corresponding to the end magnetic steel sheets is larger than the side length of the rhombus of the middle magnetic steel sheets.
4. The rotor of a permanent magnet motor according to claim 1, wherein the core is a hollow structure capable of being sleeved on the rotating shaft.
5. The permanent magnet electric machine rotor of claim 1 wherein said permanent magnets are fixedly mounted to said core by an adhesive layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010652185.XA CN111697728A (en) | 2020-07-08 | 2020-07-08 | Permanent magnet motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010652185.XA CN111697728A (en) | 2020-07-08 | 2020-07-08 | Permanent magnet motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111697728A true CN111697728A (en) | 2020-09-22 |
Family
ID=72485145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010652185.XA Withdrawn CN111697728A (en) | 2020-07-08 | 2020-07-08 | Permanent magnet motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111697728A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112701820A (en) * | 2020-12-21 | 2021-04-23 | 珠海格力电器股份有限公司 | Motor rotor, motor and household appliance |
-
2020
- 2020-07-08 CN CN202010652185.XA patent/CN111697728A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112701820A (en) * | 2020-12-21 | 2021-04-23 | 珠海格力电器股份有限公司 | Motor rotor, motor and household appliance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200922 |