CN220732462U - Novel structure of motor rotor - Google Patents
Novel structure of motor rotor Download PDFInfo
- Publication number
- CN220732462U CN220732462U CN202322434824.7U CN202322434824U CN220732462U CN 220732462 U CN220732462 U CN 220732462U CN 202322434824 U CN202322434824 U CN 202322434824U CN 220732462 U CN220732462 U CN 220732462U
- Authority
- CN
- China
- Prior art keywords
- rotor
- rotor punching
- hole
- novel structure
- positioning protrusions
- 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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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 238000004080 punching Methods 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 239000003292 glue Substances 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model belongs to the technical field of motor rotors, and particularly relates to a novel structure of a motor rotor, which comprises a rotor punching sheet, wherein the middle part of the rotor punching sheet is provided with a shaft hole, the rotor punching sheet is internally provided with a lightening hole, the periphery of the rotor punching sheet is formed with a plurality of positioning protrusions, the positioning protrusions are uniformly distributed at intervals in a ring shape, magnetic steel is arranged between two adjacent positioning protrusions, two sides of each positioning protrusion are respectively provided with an open groove, and expansion holes are formed in the positioning protrusions.
Description
Technical Field
The utility model relates to the technical field of motor rotors, in particular to a novel structure of a motor rotor.
Background
A plurality of magnetic steels are fixed on the circumferential side of a rotor core of the brushless motor, most of the magnetic steels are fixed on the rotor core through direct glue, and the magnetic steels are easy to be thrown away when the rotor core rotates at a high speed.
The disclosed low-leakage rotor core comprises a plurality of rotor punching sheets which are stacked, wherein a plurality of positioning protrusions are formed on the outer edge of each rotor punching sheet, the positioning protrusions are uniformly arranged on the rotor punching sheets at intervals in a ring shape, grooves with openings facing the circumferential outer sides of the rotor punching sheets are formed in the positioning protrusions, the grooves penetrate through the positioning protrusions along the axial direction of the rotor punching sheets, and magnetic steel is arranged between two adjacent positioning protrusions.
The magnetic steel is fixed through the two positioning bulges, the positioning bulges are of a structure with the inner narrow and the outer wide, the magnetic steel is tile-shaped, the arc length value of the inner end face of the magnetic steel is larger than that of the outer end face of the magnetic steel, and the fixing effect is better, but the requirement on the machining precision is stricter, the cost is higher, and therefore the structure is further improved.
Disclosure of Invention
The utility model aims to provide a novel structure of a motor rotor, and solves the problem of high processing cost in the prior art through an expansion hole.
The purpose of the utility model is realized in the following way: the utility model provides a novel structure of motor rotor, includes the rotor towards the piece, and the shaft hole has been seted up at the middle part of rotor towards the piece, has seted up the lightening hole in the rotor towards the piece, and the periphery shaping of rotor towards the piece has a plurality of location archs, and a plurality of location archs are annular even interval distribution, installs the magnet steel between two adjacent location archs, and open groove has been seted up respectively to the bellied both sides of location, has seted up the inflation hole in the location arch.
Preferably, the positioning protrusion is triangular, the diameter of the outer end of the positioning protrusion is larger than that of the inner end of the positioning protrusion, and the expansion hole is formed in the outer end of the positioning protrusion.
Preferably, the expansion hole comprises a round hole and a notch communicated with the round hole.
Preferably, the periphery of the rotor punching sheet is formed with a plurality of glue tanks, and the cross section of each glue tank is semicircular.
Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:
1. in the practical assembly process, a plurality of rotor punching sheets are firstly overlapped and pressed into a rotor main body, then magnetic steel is arranged between every two adjacent positioning protrusions, the side faces of the magnetic steel are attached to the side faces of the rotor, and then the columnar nails are inserted into the expansion holes, so that the expansion holes can generate certain deformation in the pressing process because the diameter size of the columnar nails is slightly larger than that of the expansion holes, the two sides of the positioning protrusions can expand outwards, and are tightly abutted against the surfaces of the magnetic steel to fix the magnetic steel.
2. According to the utility model, through the design of the open groove, the deformation of the positioning bulge can be improved, and when the columnar nail is inserted into the expansion hole, cracks between the positioning bulge and the rotor are not generated due to the fact that the deformation is too low, so that the integral structure is influenced.
Drawings
Fig. 1 is a schematic structural view of a rotor sheet.
Fig. 2 is an enlarged schematic view of the structure at a in fig. 1.
Reference numerals: 1-rotor punching; 2-shaft holes; 3-lightening holes; 4-positioning protrusions; 6-open groove; 7-expansion holes; 8-round holes; 9-notch; 10-glue groove.
Detailed Description
The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.
As shown in fig. 1-2, a novel structure of a motor rotor comprises a rotor punching sheet 1, wherein a shaft hole 2 for installing a motor shaft is formed in the middle of the rotor punching sheet 1, a lightening hole 3 is formed in the rotor punching sheet 1, a plurality of positioning protrusions 4 are formed in the periphery of the rotor punching sheet 1, the positioning protrusions 4 are distributed at equal intervals in a ring shape, magnetic steel is arranged between two adjacent positioning protrusions 4, open grooves 6 are formed in two sides of each positioning protrusion 4, and expansion holes 7 are formed in the positioning protrusions 4.
In the practical assembly process, a plurality of rotor punching sheets 1 are firstly overlapped and pressed into a rotor main body, then magnetic steel is arranged between every two adjacent positioning protrusions 4, the side faces of the magnetic steel are attached to the side faces of the rotor, and then the columnar nails are inserted into the expansion holes 7, so that the expansion holes 7 generate certain deformation in the pressing-in process because the diameter size of the columnar nails is slightly larger than that of the expansion holes 7, and the two sides of the positioning protrusions 4 are expanded outwards to tightly lean against the surfaces of the magnetic steel for fixing the magnetic steel.
In addition, the deformation amount of the positioning bulge 4 can be improved through the design of the open groove 6, and when the columnar nail is inserted into the expansion hole, cracks between the positioning bulge and the rotor cannot be generated due to the fact that the deformation amount is too low, so that the integral structure is affected.
Referring specifically to fig. 2, the positioning protrusion 4 is triangular, the diameter of the outer end of the positioning protrusion 4 is larger than the diameter of the inner end of the positioning protrusion, so that the stability of the structure is ensured, and the two sides of the positioning protrusion 4 are provided with deformation amounts which expand outwards, and the outer end of the positioning protrusion 4 is provided with the expansion hole 7, so that the cylindrical nail is convenient to install.
Referring specifically to fig. 2, the expansion hole 7 includes a circular hole 8 for mounting a stud and a notch 9 communicating with the circular hole.
Referring to fig. 1 specifically, the periphery shaping of rotor punching 1 has a plurality of glue grooves 10, and the cross-section of glue groove 10 is semi-circular, in this technical scheme, when packing into the back with the magnet steel, can also be through injecting into glue groove 10 in to further improve the fastness between magnet steel and the rotor, increase of service life is difficult for droing, and the magnet steel is thrown away when effectively preventing rotor core high-speed rotation.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a novel structure of motor rotor, a serial communication port, including rotor punching (1), shaft hole (2) have been seted up at the middle part of rotor punching (1), lightening hole (3) have been seted up in rotor punching (1), the periphery shaping of rotor punching (1) has a plurality of location protruding (4), a plurality of location protruding (4) are annular even interval distribution, install the magnet steel between two adjacent location protruding (4), open groove (6) have been seted up respectively to the both sides of location protruding (4), expansion hole (7) have been seted up in the location protruding (4).
2. The novel structure of a motor rotor according to claim 1, characterized in that: the positioning bulge (4) is triangular, the diameter of the outer end of the positioning bulge (4) is larger than that of the inner end of the positioning bulge, and the expansion hole (7) is formed in the outer end of the positioning bulge (4).
3. A novel structure of a motor rotor according to claim 1 or 2, characterized in that: the expansion hole (7) comprises a round hole (8) and a notch (9) communicated with the round hole.
4. The novel structure of a motor rotor according to claim 1, characterized in that: the periphery of the rotor punching sheet (1) is provided with a plurality of glue tanks (10), and the cross section of each glue tank (10) is semicircular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322434824.7U CN220732462U (en) | 2023-09-07 | 2023-09-07 | Novel structure of motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322434824.7U CN220732462U (en) | 2023-09-07 | 2023-09-07 | Novel structure of motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220732462U true CN220732462U (en) | 2024-04-05 |
Family
ID=90502253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322434824.7U Active CN220732462U (en) | 2023-09-07 | 2023-09-07 | Novel structure of motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220732462U (en) |
-
2023
- 2023-09-07 CN CN202322434824.7U patent/CN220732462U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |