CN220122657U - Integrated DD motor rotor structure - Google Patents
Integrated DD motor rotor structure Download PDFInfo
- Publication number
- CN220122657U CN220122657U CN202321737123.4U CN202321737123U CN220122657U CN 220122657 U CN220122657 U CN 220122657U CN 202321737123 U CN202321737123 U CN 202321737123U CN 220122657 U CN220122657 U CN 220122657U
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- China
- Prior art keywords
- cylinder part
- plate part
- radial plate
- inner cylinder
- rotor structure
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Links
- 230000007704 transition Effects 0.000 claims abstract description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 9
- 238000001746 injection moulding Methods 0.000 description 5
- 238000005406 washing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses an integrated DD motor rotor structure, which comprises an inner cylinder part in the middle, an outer cylinder part arranged on the outer side of the circumference of the inner cylinder part and a connecting part for connecting the inner cylinder part and the outer cylinder part; the connecting part comprises a first radial plate part connected with the inner cylinder part, a second radial plate part connected with the outer cylinder part and a transition surface for connecting the first radial plate part and the second radial plate part; the second web portion is located circumferentially outside the first web portion; the transition surface is a cambered surface. The rotor structure of the utility model is composed of the inner cylinder part, the outer cylinder part and the connecting part, the connecting part is composed of the first radial plate part, the second radial plate part and an arc-shaped transition surface for connecting the two parts, and the transition surface is an arc-shaped surface, so that the wind resistance coefficient of the rotor in the rotating process is relatively low, the motor noise generated in the using process can be effectively reduced, and the motor noise felt by a user in the practical application process is very small; the utility model has the advantage of low motor noise.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to an integrated DD motor rotor structure.
Background
Currently, the application of brushless permanent magnet outer rotor type motors to washing machines is becoming more and more popular, especially to large-scale applications on direct drive washing machines; as the demand increases, the radial size of the outer rotor type motor becomes larger and larger, the size of the outer rotor becomes larger and larger, and the spin-drying speed of the direct-drive type washing machine becomes faster and faster, and naturally, the demand of people for motor noise is also higher and higher;
rotor injection molding is a rotor processing method which is gradually and commonly adopted, and adopts hot plastic or thermosetting plastic injection molding; in the method, the rotor magnetic ring, the magnetic steel and the spline housing are directly used as inserts, and the rotor is integrally formed by an injection molding or compression molding method.
However, the strength of the plastic adopted by the current injection molding is obviously inferior to that of the steel plate adopted by the prior art, so that great motor noise can be generated due to the poor strength in the operation process;
therefore, the DD motor rotor structure of the existing injection molding has the problem of high motor noise.
Disclosure of Invention
The utility model aims to provide an integrated DD motor rotor structure. The utility model has the advantage of low motor noise.
The technical scheme of the utility model is as follows: the integrated DD motor rotor structure comprises an inner cylinder part in the middle, an outer cylinder part arranged on the outer side of the circumference of the inner cylinder part and a connecting part for connecting the inner cylinder part and the outer cylinder part; the connecting part comprises a first radial plate part connected with the inner cylinder part, a second radial plate part connected with the outer cylinder part and a transition surface for connecting the first radial plate part and the second radial plate part; the second web portion is located circumferentially outside the first web portion; the transition surface is a cambered surface.
In the integrated DD motor rotor structure, a plurality of radially distributed reinforcing ribs are arranged on the outer side surface of the transition surface; the two ends of each reinforcing rib are respectively connected with the first radial plate part and the second radial plate part.
In the integrated DD motor rotor structure, the orthographic projection surfaces of the first radial plate part and the second radial plate part are circular.
In the integrated DD motor rotor structure, the inner bottom of the first web portion is lower than the inner bottom of the second web portion in horizontal height.
In the integrated DD motor rotor structure, a plurality of through holes are uniformly distributed on the second radial plate part.
Compared with the prior art, the rotor structure of the utility model is composed of the inner cylinder part, the outer cylinder part and the connecting part, the connecting part is composed of the first radial plate part, the second radial plate part and the arc-shaped transition surface for connecting the two parts, and the transition surface is the arc-shaped surface, so that the wind resistance coefficient of the rotor in the rotating process is relatively low, the motor noise generated in the using process can be effectively reduced, and the motor noise felt by a user in the practical application process is very small;
through adding many strengthening ribs on the transition face to the effectual bulk strength who strengthens the rotor ensures that its intensity performance satisfies the requirement.
Therefore, the utility model has the advantage of low motor noise.
Drawings
FIG. 1 is a schematic view (front side) of the structure of the present utility model;
FIG. 2 is a schematic view (back side) of the structure of the present utility model;
FIG. 3 is a schematic representation of the transition surface (cross section) of the present utility model.
Reference numerals: 1-inner cylinder part, 2-outer cylinder part, 31-first web part, 32-second web part, 33-transition surface, 4-reinforcing rib.
Detailed Description
The utility model is further illustrated by the following figures and examples, which are not intended to be limiting.
Examples. 1-3, the integrated DD motor rotor structure comprises an inner cylinder part 1 in the middle, an outer cylinder part 2 arranged on the outer side of the circumference of the inner cylinder part 1 and a connecting part for connecting the inner cylinder part 1 and the outer cylinder part 2; the connecting part comprises a first spoke plate part 31 connected with the inner cylinder part 1, a second spoke plate part 32 connected with the outer cylinder part 2 and a transition surface 33 connecting the first spoke plate part 31 and the second spoke plate part 32; the second web portion 32 is located circumferentially outside the first web portion 31; the transition surface 33 is a cambered surface, and in fig. 3, only a few shapes are simply illustrated, and the shape can be actually selected according to actual needs, and only the connection smoothness between the first web portion 31 and the second web portion 32 is ensured.
The outer side surface of the transition surface 33 is provided with a plurality of radially distributed reinforcing ribs 4; both ends of each reinforcing bead 4 are connected to the first web portion 31 and the second web portion 32, respectively.
The orthographic projection surfaces of the first web portion 31 and the second web portion 32 are annular.
The inner bottom of the first web portion 31 is lower in horizontal height than the inner bottom of the second web portion 32.
The second web portion 32 has a plurality of through holes uniformly distributed thereon.
Claims (5)
1. Integral type DD motor rotor structure, its characterized in that: comprises an inner cylinder part (1) in the middle part, an outer cylinder part (2) arranged on the outer side of the circumference of the inner cylinder part (1) and a connecting part for connecting the inner cylinder part (1) and the outer cylinder part (2); the connecting part comprises a first radial plate part (31) connected with the inner cylinder part (1), a second radial plate part (32) connected with the outer cylinder part (2) and a transition surface (33) for connecting the first radial plate part (31) and the second radial plate part (32); the second web part (32) is positioned outside the circumference of the first web part (31); the transition surface (33) is a cambered surface.
2. The integrated DD motor rotor structure of claim 1, wherein: a plurality of radially distributed reinforcing ribs (4) are arranged on the outer side surface of the transition surface (33); both ends of each reinforcing rib (4) are respectively connected with the first web plate part (31) and the second web plate part (32).
3. The integrated DD motor rotor structure of claim 1, wherein: the orthographic projection surfaces of the first web plate part (31) and the second web plate part (32) are annular.
4. The integrated DD motor rotor structure of claim 1, wherein: the inner bottom of the first web portion (31) is lower in horizontal height than the inner bottom of the second web portion (32).
5. The integrated DD motor rotor structure of claim 1, wherein: the second web portion (32) has a plurality of through holes uniformly distributed thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321737123.4U CN220122657U (en) | 2023-07-03 | 2023-07-03 | Integrated DD motor rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321737123.4U CN220122657U (en) | 2023-07-03 | 2023-07-03 | Integrated DD motor rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220122657U true CN220122657U (en) | 2023-12-01 |
Family
ID=88916798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321737123.4U Active CN220122657U (en) | 2023-07-03 | 2023-07-03 | Integrated DD motor rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220122657U (en) |
-
2023
- 2023-07-03 CN CN202321737123.4U patent/CN220122657U/en active Active
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