CN217240427U - Rotor of disk motor - Google Patents
Rotor of disk motor Download PDFInfo
- Publication number
- CN217240427U CN217240427U CN202220816955.4U CN202220816955U CN217240427U CN 217240427 U CN217240427 U CN 217240427U CN 202220816955 U CN202220816955 U CN 202220816955U CN 217240427 U CN217240427 U CN 217240427U
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- rotor
- magnetic conduction
- adhesive
- magnetic
- motor according
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 49
- 239000010959 steel Substances 0.000 claims abstract description 49
- 239000000853 adhesive Substances 0.000 claims abstract description 38
- 230000001070 adhesive effect Effects 0.000 claims abstract description 38
- 238000001125 extrusion Methods 0.000 claims description 17
- 239000003822 epoxy resin Substances 0.000 claims description 9
- 229920000647 polyepoxide Polymers 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 7
- 238000004049 embossing Methods 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 229920006335 epoxy glue Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model relates to a motor field, concretely relates to disc motor's rotor, including rotor backplate, magnetic conduction board and magnet steel, the rotor backplate be opening form casing, the magnetic conduction board is whole to be cylindricly, in the cavity of rotor backplate is arranged in to the magnetic conduction board, the magnet steel be provided with two and more than two, the magnet steel is attached on the surface that the magnetic conduction board is close to rotor backplate opening part one side, and the even interval arrangement of circumference of a plurality of magnet steels along the magnetic conduction board, the outer anchor ring of magnet steel support and lean on the inside wall of rotor backplate, magnet steel and magnetic conduction board between fix through paining high bonding strength, high tenacity, high temperature resistance adhesive, after the solidification is pasted to the adhesive, its bonding force is very strong. Under the condition of normal working temperature of the motor, the bonding force of the adhesive can meet the fixing requirement of the magnetic steel, the feasibility is high, the process is simple, and the cost is low.
Description
Technical Field
The utility model relates to the field of electric machines, concretely relates to disc motor's rotor.
Background
The disc type motor is an axial permanent magnet motor, and a rotor of the motor mainly comprises a rotor back plate, a magnetic conduction plate and magnetic steel, wherein the magnetic steel and the magnetic conduction plate are fixed on the rotor back plate. Because the rotor is under the action of axial magnetic pull force of the stator on the rotor, the magnetic steel and the magnetic conduction plate tend to be attracted to the stator. And the magnetic conduction plate and the magnetic steel can also be acted by centrifugal force when the rotor rotates, and the magnetic steel and the magnetic conduction plate also have the risk of falling off from the back plate of the rotor, so that the reliable fixation of the magnetic steel and the magnetic conduction plate is necessary.
Disclosure of Invention
The utility model aims at providing a simple structure, disc motor's that stability is good rotor.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a rotor of disk motor, includes rotor backplate, magnetic conduction board and magnet steel, the rotor backplate be opening form casing, the magnetic conduction board is whole cylindricly, the magnetic conduction board is arranged in the cavity of rotor backplate, the magnet steel be provided with two and more than two, the magnet steel is attached on the surface that the magnetic conduction board is close to rotor backplate opening part one side, and a plurality of magnet steels evenly arrange along the circumference of magnetic conduction board at interval, the outer anchor ring of magnet steel support and lean on the inside wall of rotor backplate, magnet steel and magnetic conduction board between fix through paining high adhesive strength, high tenacity, high temperature resistance adhesive.
Due to the adoption of the technical scheme, the adhesive has strong bonding force after being bonded and cured. Under the condition of normal working temperature of the motor, the bonding force of the adhesive can meet the fixing requirement of the magnetic steel, the feasibility is high, the process is simple, and the cost is low.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 2;
FIG. 4 is a schematic view of the rotor without epoxy glue potting;
fig. 5 is a schematic structural view of a rotor back plate.
Detailed Description
The utility model provides a rotor of disk motor, includes rotor backplate 10, magnetic conduction board 20 and magnet steel 30, rotor backplate 10 be opening form casing, magnetic conduction board 20 is whole cylindricly, magnetic conduction board 20 is arranged in the cavity 11 of rotor backplate 10, magnet steel 30 be provided with two and more than two, magnet steel 30 is attached on the surface 21 that magnetic conduction board 20 is close to rotor backplate 10 opening part one side, and a plurality of magnet steels 30 evenly arrange along the circumference of magnetic conduction board 20 interval, outer annular face 31 of magnet steel 30 support and lean on rotor backplate 10's inside wall 13, magnet steel 30 and magnetic conduction board 20 between fix through paining high adhesive strength, high tenacity, high temperature resistance adhesive. The magnetic conductive plate 20 is formed by winding a silicon steel strip. The high toughness means that the alloy is not easy to age and fail after repeated vibration and repeated impact. High bond strength means a relatively high tensile strength and shear strength, mainly a relatively high shear strength. After the adhesive is stuck and cured, the adhesive force is very strong. Under the condition of normal working temperature of the motor, the bonding force of the adhesive can meet the fixing requirement of the magnetic steel 30, the feasibility is high, the process is simple, and the cost is low.
An extrusion part 40 is arranged beside the inner ring surface 32 of the magnetic steel 30, the extrusion part 40 is fixed on the rotor back plate 10, and the extrusion part 40 extrudes the inner ring surface and/or the outer surface 21 of the magnetic conduction plate 20. The inner ring surface of the magnetic conduction plate 20 is the annular periphery close to the center of the rotor, and is extruded and abutted against the inner ring surface by an extrusion piece 40 or is directly pressed on the outer surface 21, and the extrusion piece 40 is used for mechanically fixing the magnetic conduction plate 20. Because magnet steel 30 and magnetic conduction board 20 are fixed as an organic whole through sticky mode, as long as fixed magnetic conduction board 20 just so fixed magnet steel 30, so the utility model discloses on scribbling the basis of using the adhesive, further carry out mechanical fixation to magnetic conduction board 20 again, magnet steel 30 is fixed more reliably, has promoted the quality of motor.
The shear strength of the adhesive is more than 20Mpa, and the shear strength of the adhesive at a high temperature of 100 ℃ is not lower than 6 Mpa. Generally, the temperature of the motor in a working state can reach 80-100 ℃, and the bonding force of the adhesive can be greatly reduced in a high-temperature environment, so that magnetic steel and the like can easily fall off, and the quality and the service life of the motor are seriously influenced. Therefore, the stability of the magnetic steel 30 can be ensured only by ensuring that the shearing strength of the adhesive meets 6 Mpa.
After the magnetic conductive plate 20 and the magnetic steel 30 are placed in the cavity 11, the rotor back plate 10 is integrally encapsulated with the epoxy resin glue 50. An assembly gap of 0.5mm-1.5mm is formed between the magnetic conduction plate 20 and the magnetic steel 30 which are placed in the cavity 11, heat-conducting and insulating encapsulated epoxy resin glue 50 is filled in the gap, and the epoxy resin glue 50 provides enough adhesive force after being cured, so that the assembly reliability of the magnetic conduction plate 20 and the magnetic steel 30 is further enhanced. The process of this structure is simple, and epoxy glue 50 and magnetic conduction plate 20 or magnet steel 30 are all the complete contact between the while, and area of contact is bigger, and the radiating effect is better. The surface of rotor is a complete smooth surface behind embedment epoxy glue 50, and the windmilling can reduce, promotes the motor quality.
The extrusion member 40 is pressed against the outer surface 21, the extrusion member 40 is a screw, the rod body of the screw is fixed on the rotor back plate 10, and the head of the screw presses on the outer surface 21.
A washer 41 is provided between the pressing member 40 and the outer surface 21, the washer 41 being pressed between the screw head and the outer surface 21. The arrangement of the gasket 41 can increase the extrusion area with the outer surface 21, the extrusion force is larger and more reliable, and the stress of the magnetic conduction plate 20 is more uniform.
The inner side wall of the cavity 11 is a rough surface. Shallow trenches, knurls and embossings are arranged on the inner side wall of the cavity 11. The rough surface can be formed by turning a shallow groove and a thread on the inner side wall, or forming a knurling and an embossing on the inner side wall. The arrangement of the rough surface can enhance the adhesive force of the resin adhesive 40, increase the contact area, improve the adhesive force between the bare stator 30 and the side wall 20, and further improve the thermal conductivity.
The rotor back plate 10 is integrally disc-shaped, a through hole 12 through which a motor rotating shaft penetrates is formed in the middle of the rotor back plate 10, an annular groove is formed in the plate surface of the rotor back plate 10, the annular groove forms a cavity 11 used for containing the magnetic conduction plate 20 and the magnetic steel 30, a boss 14 is arranged between the cavity 11 and the through hole 12, a concave portion 141 used for containing the extrusion piece 40 is formed in the boss 14, and the number and the position of the concave portions 141 correspond to those of the extrusion piece 40. The concave part 141 can ensure that the head of the extrusion part 40 does not exceed the surface of the rotor back plate, and meanwhile, the concave part 141 also leaves a space for encapsulating epoxy resin glue, so that the reliability of fixing the magnetic steel 30 is further improved.
The adhesive can adopt bi-component AB adhesive, inorganic high-temperature-resistant adhesive, modified epoxy resin adhesive, epoxy resin adhesive and acrylate adhesive. The preferred adhesive of the utility model can adopt Thomas glue, loctite glue and Dow chemical adhesive. Tests prove that the Thomas rubber has very good effect, the shear strength can reach 35Mpa, and the use requirement is completely met.
Claims (10)
1. The utility model provides a disk motor's rotor, includes rotor backplate (10), magnetic conduction board (20) and magnet steel (30), rotor backplate (10) be opening form casing, magnetic conduction board (20) wholly is cylindricly, in cavity (11) of rotor backplate (10) are arranged in magnetic conduction board (20), its characterized in that: the magnetic steel (30) is provided with two or more than two, the magnetic steel (30) is attached to the outer surface (21) of one side, close to the opening of the rotor back plate (10), of the magnetic conduction plate (20), the plurality of magnetic steels (30) are evenly arranged at intervals along the circumferential direction of the magnetic conduction plate (20), the outer annular surface (31) of the magnetic steel (30) abuts against the inner side wall (13) of the rotor back plate (10), and the magnetic steel (30) and the magnetic conduction plate (20) are fixed through smearing high-bonding-strength, high-toughness and high-temperature-resistant adhesives.
2. The rotor of a disc motor according to claim 1, characterized in that: the magnetic steel rotor is characterized in that an extrusion part (40) is arranged beside an inner ring surface (32) of the magnetic steel (30), the extrusion part (40) is fixed on a rotor back plate (10), and the extrusion part (40) extrudes an inner ring surface and/or an outer surface (21) of the magnetic conduction plate (20).
3. The rotor of a disc motor according to claim 2, characterized in that: the shear strength of the adhesive is more than 20Mpa, and the shear strength of the adhesive at a high temperature of 100 ℃ is not less than 6 Mpa.
4. The rotor of a disk motor according to any one of claims 2 or 3, characterized in that: and after the magnetic conduction plate (20) and the magnetic steel (30) are placed in the cavity (11), the rotor back plate (10) is integrally encapsulated with epoxy resin glue (50).
5. The rotor of a disc motor according to claim 4, characterized in that: the extrusion piece (40) is extruded to abut against the outer surface (21), the extrusion piece (40) is a screw, a rod body of the screw is fixed on the rotor back plate (10), and the head of the screw is pressed on the outer surface (21).
6. The rotor of a disc motor according to claim 5, characterized in that: a spacer (41) is arranged between the pressing piece (40) and the outer surface (21), and the spacer (41) is pressed between the screw head and the outer surface (21).
7. The rotor of a disc motor according to claim 6, characterized in that: the inner side wall of the cavity (11) is a rough surface.
8. The rotor of a disc motor according to claim 7, characterized in that: shallow trenches, knurls and embossings are arranged on the inner side wall of the cavity (11).
9. The rotor of a disc motor according to claim 8, characterized in that: rotor backplate (10) whole be discoid, through-hole (12) that useful motor shaft passed are seted up to its middle part, the quotation of rotor backplate (10) on seted up the ring channel, this ring channel constitutes cavity (11) that are used for holding magnetic conduction board (20) and magnet steel (30), the disk body is boss (14) between cavity (11) and through-hole (12), set up concave part (141) that are used for holding extruded article (40) on this boss (14), the quantity and the position of concave part (141) all correspond with extruded article (40).
10. The rotor of a disc motor according to claim 1, characterized in that: the adhesive can adopt bi-component AB adhesive, inorganic high-temperature-resistant adhesive, modified epoxy resin adhesive, epoxy resin adhesive and acrylate adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220816955.4U CN217240427U (en) | 2022-04-08 | 2022-04-08 | Rotor of disk motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220816955.4U CN217240427U (en) | 2022-04-08 | 2022-04-08 | Rotor of disk motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217240427U true CN217240427U (en) | 2022-08-19 |
Family
ID=82819089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220816955.4U Active CN217240427U (en) | 2022-04-08 | 2022-04-08 | Rotor of disk motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217240427U (en) |
-
2022
- 2022-04-08 CN CN202220816955.4U patent/CN217240427U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 313009, No. 585-483, Shiyuan West Road, Dongqian Street, Nanxun District, Huzhou City, Zhejiang Province Patentee after: Huzhou Hardcore Pai Technology Co.,Ltd. Country or region after: China Address before: 244000 Tongling Economic Development Zone, Anhui Province Patentee before: Tongling hardcore Technology Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |