CN210297366U - Motor rotor structure - Google Patents
Motor rotor structure Download PDFInfo
- Publication number
- CN210297366U CN210297366U CN201920702183.XU CN201920702183U CN210297366U CN 210297366 U CN210297366 U CN 210297366U CN 201920702183 U CN201920702183 U CN 201920702183U CN 210297366 U CN210297366 U CN 210297366U
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- China
- Prior art keywords
- rotating shaft
- rotor
- rotor core
- buffer sleeve
- sleeve
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Abstract
The utility model discloses a motor rotor structure, including the pivot and be fixed in this epaxial rotor core of rotating, still include a cushion collar, this cushion collar cover is located in this pivot, and this cushion collar is located to this rotor core cover, and when this cushion collar was located to this rotor core cover, radial pressure was applyed to this cushion collar to this rotor core to mutual fixation between messenger's this pivot, cushion collar and the rotor core. The utility model discloses a stress between pivot and the rotor core has been slowed down in the design of cushion collar, has prolonged motor life.
Description
Technical Field
The utility model relates to a motor field, concretely relates to motor rotor structure.
Background
The motor includes a rotor and a stator. The rotor includes the pivot and the rotor core of cover on this pivot is located to the cover, and the stator includes wheel hub and installs to the inboard annular magnet steel of wheel hub.
In the prior art, the rotor core is installed on the rotating shaft through tight fit, or the rotor core and the rotating shaft are integrally formed, so that the rotor core drives the rotating shaft to rotate. However, in the design of integrating the rotor core and the rotating shaft, when the motor suddenly stops rotating, the rotating shaft as an output shaft suddenly stops, the rotor core tends to continue to rotate under the action of inertia, so that large stress is generated between the rotor core and the rotating shaft for a long time, and the motor is easily damaged.
SUMMERY OF THE UTILITY MODEL
For solving the not enough of prior art, the utility model aims to provide an electric motor rotor structure, this kind of electric motor rotor structure can slow down the stress between pivot and the rotor core, has prolonged motor life.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides an electric motor rotor structure, includes the pivot and is fixed in this epaxial rotor core that rotates, still includes a cushion collar, and this cushion collar cover is located in this pivot, and this cushion collar is located to this rotor core cover, and when this cushion collar was located to this rotor core cover, this rotor core applyed radial pressure to this cushion collar to mutual stationary between messenger this pivot, cushion collar and the rotor core.
Further, the rotating shaft is provided with a groove on the surface, the rotor core comprises a rotating shaft hole, and a first convex strip matched with the groove is arranged in the rotating shaft hole.
Further, the groove is axially parallel to the rotating shaft.
Further, the number of the grooves and the number of the protrusions are two.
Furthermore, a flange is arranged at one end of the rotating shaft, the flange protrudes outwards from the surface of the rotating shaft in the radial direction, and one end of the buffer sleeve abuts against the flange.
Further, another terminal of pivot is equipped with the screw, screw female connection has spacing bolt, the cushion collar other end supports and leans on spacing bolt.
Furthermore, the rotating shaft is also provided with an anti-falling convex strip extending along the circumferential direction of the rotating shaft.
Further, the buffer sleeve is a metal sleeve, and the metal sleeve is a copper sleeve or an aluminum sleeve.
The utility model discloses an useful part lies in: through the design of buffer sleeve, slowed down the stress between pivot and the rotor core, prolonged motor life.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic structural diagram of the rotating shaft of the present invention.
Fig. 3 is a schematic view of a rotor core of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 3, a rotor structure of an electric motor includes a rotating shaft 1, a rotor core 2 fixed to the rotating shaft, and a buffer sleeve 3, the buffer sleeve is disposed on the rotating shaft, the rotor core is sleeved on the buffer sleeve, and when the rotor core is sleeved on the buffer sleeve, the rotor core applies radial pressure to the buffer sleeve, so that the rotating shaft, the buffer sleeve and the rotor core are fixed to each other. Through the design of buffer sleeve, slowed down the stress between pivot and the rotor core, prolonged motor life.
In this embodiment, the surface of the rotating shaft is provided with a groove 4, the rotor core includes a rotating shaft hole 5, and a first protruding strip 6 matched with the groove is arranged in the rotating shaft hole. The groove and the first raised strip are paired to prevent slipping.
In this embodiment, the groove is axially parallel to the rotating shaft.
In this embodiment, the number of the grooves and the number of the protrusions are two.
In this embodiment, a flange 7 is disposed at one end of the rotating shaft, the flange protrudes outward from the surface of the rotating shaft in the radial direction, and one end of the buffer sleeve abuts against the flange. The buffer sleeve is used for limiting and preventing the buffer sleeve from being separated.
In this embodiment, a screw hole 8 is formed in the other end of the rotating shaft, a limiting bolt 9 is connected to the screw hole in an internal thread manner, and the other end of the buffer sleeve abuts against the limiting bolt. The buffer sleeve is used for limiting and preventing the buffer sleeve from being separated.
In this embodiment, the rotating shaft is further provided with an anti-slip convex strip 10 extending along the circumferential direction of the rotating shaft. The friction force between the rotating shaft and the buffer sleeve is increased.
In this embodiment, the buffer sleeve is a metal sleeve, and the metal sleeve is a copper sleeve or an aluminum sleeve.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (7)
1. The utility model provides a motor rotor structure, includes the pivot and is fixed in the epaxial rotor core of this pivot, its characterized in that: the buffer sleeve is sleeved on the rotating shaft, the rotor iron core is sleeved on the buffer sleeve, and when the rotor iron core is sleeved on the buffer sleeve, the rotor iron core applies radial pressure to the buffer sleeve, so that the rotating shaft, the buffer sleeve and the rotor iron core are fixed with each other; the rotor core comprises a rotor core body and a rotor core, wherein a groove is formed in the surface of the rotor core body, the rotor core body comprises a rotor hole, and a first protruding strip matched with the groove is arranged in the rotor hole.
2. The motor rotor structure according to claim 1, wherein: the groove is axially parallel to the rotating shaft.
3. The motor rotor structure according to claim 2, wherein: the number of the grooves and the number of the protrusions are two.
4. The motor rotor structure according to claim 1, wherein: the tail end of the rotating shaft is provided with a flange, the flange protrudes outwards from the surface of the rotating shaft in the radial direction, and one end of the buffer sleeve abuts against the flange.
5. The motor rotor structure according to claim 4, wherein: the other end of the rotating shaft is provided with a screw hole, a limiting bolt is connected to the inner thread of the screw hole, and the other end of the buffer sleeve abuts against the limiting bolt.
6. The motor rotor structure according to claim 1, wherein: the rotating shaft is also provided with an anti-falling convex strip extending along the circumferential direction of the rotating shaft.
7. The motor rotor structure according to claim 1, wherein: the buffer sleeve is a metal sleeve, and the metal sleeve is a copper sleeve or an aluminum sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920702183.XU CN210297366U (en) | 2019-05-16 | 2019-05-16 | Motor rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920702183.XU CN210297366U (en) | 2019-05-16 | 2019-05-16 | Motor rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210297366U true CN210297366U (en) | 2020-04-10 |
Family
ID=70069924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920702183.XU Active CN210297366U (en) | 2019-05-16 | 2019-05-16 | Motor rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210297366U (en) |
-
2019
- 2019-05-16 CN CN201920702183.XU patent/CN210297366U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |