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CN-224204845-U - Rotor core and rotor

CN224204845UCN 224204845 UCN224204845 UCN 224204845UCN-224204845-U

Abstract

The utility model discloses a rotor iron core and a rotor, wherein the rotor iron core comprises a plurality of electromagnetic steel plates, the plurality of electromagnetic steel plates are arranged in a stacked mode, the electromagnetic steel plates comprise a plurality of magnet through holes which are arranged in a central symmetry mode, the magnet through holes are suitable for magnet insertion, each magnet through hole comprises a first type of magnet through holes and a second type of magnet through holes, the electromagnetic steel plates are provided with protruding parts which extend towards the first type of magnet through holes and are suitable for deformation and are in contact with magnets, the number of the first type of magnet through holes is smaller than or equal to that of the second type of magnet through holes, in the adjacent electromagnetic steel plates, one type of magnet through holes of the prior electromagnetic steel plates are communicated with the second type of magnet through holes of the subsequent electromagnetic steel plates, the rotation angle of the electromagnetic steel plates achieves that the first type of magnet through holes correspond to the second type of magnet through holes, deformation stability of the protruding parts is guaranteed, and fixing of a magnet can be achieved only by producing the electromagnetic steel plates with one specification, and production cost is effectively reduced.

Inventors

  • BAI CHUN
  • JIANG XUAN
  • Ling Guoan
  • XU HUAZHONG
  • CHEN JIWEI
  • XIONG JINQIANG
  • YIN CHUNYAN
  • WU WEI

Assignees

  • 标立电机(珠海)有限公司

Dates

Publication Date
20260505
Application Date
20250530

Claims (10)

  1. 1. A rotor core, comprising: A plurality of electromagnetic steel plates (100), wherein the plurality of electromagnetic steel plates (100) are stacked; The electromagnetic steel plate (100) comprises a plurality of magnet through holes (110) which are arranged in a central symmetry mode, the magnet through holes (110) are suitable for inserting magnets (910), and the magnet through holes (110) comprise a type of magnet through holes (111) and a type of magnet through holes (112); The electromagnetic steel plate (100) is provided with a protruding part (120) extending to the magnet through hole (111), and the protruding part (120) is suitable for deforming and abutting the magnet (910); The number of the first-class magnet through holes (111) is smaller than or equal to the number of the second-class magnet through holes (112), and in the adjacent electromagnetic steel plates (100), the first-class magnet through holes (111) of the prior electromagnetic steel plate (100) are communicated with the second-class magnet through holes (112) of the subsequent electromagnetic steel plate (100).
  2. 2. The rotor core according to claim 1, wherein the electromagnetic steel plate (100) is provided with a first escape groove (130) communicating with the one type of magnet through holes (111), and a groove wall of the first escape groove (130) extends toward the one type of magnet through holes (111) side with the protrusion (120).
  3. 3. The rotor core according to claim 2, characterized in that the electromagnetic steel plate (100) is provided with a second escape groove (140) communicating with the second type magnet through hole (112), the second escape groove (140) being capable of corresponding to the first escape groove (130) of an adjacent electromagnetic steel plate (100) and being adapted to accommodate the deformed protrusion (120).
  4. 4. The rotor core according to claim 1, wherein the electromagnetic steel plate (100) is provided with an even number of the magnet through holes (110), and the one type of the magnet through holes (111) and the two type of the magnet through holes (112) are the same in number and are provided in order.
  5. 5. The rotor core according to any one of claims 1 to 4, wherein the electromagnetic steel plate (100) is provided with a rotation shaft through hole (150) for mounting a rotation shaft (920), the rotation shaft through hole (150) being coaxial with the symmetry centers of the plurality of magnet through holes (110); The electromagnetic steel plates (100) are provided with a plurality of heat dissipation grooves (160) communicated with the rotating shaft through holes (150), and heat dissipation spaces are formed by surrounding the heat dissipation grooves (160) of the preceding electromagnetic steel plates (100), the following electromagnetic steel plates (100) and the rotating shaft (920) in the laminated electromagnetic steel plates (100).
  6. 6. The rotor core according to claim 5, characterized in that a plurality of the heat dissipation grooves (160) are arranged centrally symmetrically around the shaft through hole (150).
  7. 7. The rotor core according to claim 6, characterized in that a symmetry center line of the heat dissipation groove (160) coincides with a symmetry center line of two adjacent magnet through holes (110).
  8. 8. The rotor core according to any one of claims 1 to 4, wherein the electromagnetic steel plate (100) is provided with magnet avoiding grooves (170) communicating with the magnet through holes (110), and each two magnet avoiding grooves (170) are provided corresponding to one of the magnet through holes (110) and are respectively located on both sides of the symmetry axis of the magnet through hole (110).
  9. 9. A rotor comprising a rotor core (10) according to any one of claims 1 to 8.
  10. 10. The rotor according to claim 9, characterized in that the rotor core (10) comprises a first rotor core (11) and a second rotor core (12); The rotor comprises a magnet (910), wherein a first end of the magnet (910) is provided with the first rotor iron core (11), a second end of the magnet is provided with the second rotor iron core (12), and the first rotor iron core (11) is abutted with the second rotor iron core (12); The deformation inclination direction of the protruding part (120) of the first rotor core (11) is directed toward the second end along the first end, and the deformation inclination direction of the protruding part (120) of the second rotor core (12) is directed toward the first end along the second end.

Description

Rotor core and rotor Technical Field The utility model relates to the technical field of motors, in particular to a rotor core and a rotor. Background The motor generally has a rotor and a stator, wherein the rotor further includes a rotor core, a magnet mounted on the rotor core, and a rotating shaft, and the magnet is generally fixed on the rotor core in an interference fit or adhesive manner, which generally has a problem of difficult assembly. In order to solve the above-mentioned problems, it is proposed in the related art to form a rotor core by using a plurality of stacked electromagnetic steel plates, and to provide elastic protrusions in a part of the electromagnetic steel plates to deform when the magnet is inserted into the rotor core, so as to ensure convenience in assembling the magnet and lock the protrusions to limit the fixed magnet after the assembly is completed. The above proposal not only requires the electromagnetic steel plate with the protruding part, but also requires the electromagnetic steel plate without the protruding part for avoiding the deformation of the protruding part, and has the problem of high production cost. Disclosure of utility model The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the rotor core and the rotor, wherein the electromagnetic steel plates are rotated, so that the first magnet through holes of the prior electromagnetic steel plates are communicated with the second magnet through holes of the subsequent electromagnetic steel plates in the adjacent electromagnetic steel plates to realize avoiding, and the rotor can be assembled by only producing one type of electromagnetic steel plates. In one aspect, an embodiment of the present utility model provides a rotor core and a rotor, including: a plurality of electromagnetic steel plates, the plurality of electromagnetic steel plates being stacked; The electromagnetic steel plate comprises a plurality of magnet through holes which are arranged in a central symmetry mode, wherein the magnet through holes are suitable for magnet insertion, and the magnet through holes comprise a first type of magnet through holes and a second type of magnet through holes; The electromagnetic steel plate is provided with a protruding part extending to the magnet through holes, and the protruding part is suitable for deforming and abutting against the magnet; The number of the first-class magnet through holes is smaller than or equal to that of the second-class magnet through holes, and in the adjacent electromagnetic steel plates, the first-class magnet through holes of the prior electromagnetic steel plates are communicated with the second-class magnet through holes of the subsequent electromagnetic steel plates. According to some embodiments of the utility model, the electromagnetic steel plate is provided with a first avoidance groove communicated with the magnet through holes, and the groove wall of the first avoidance groove extends to the magnet through holes. According to some embodiments of the utility model, the electromagnetic steel plate is provided with a second avoidance groove communicated with the second-type magnet through hole, the second avoidance groove can correspond to the first avoidance groove of the adjacent electromagnetic steel plate, and is suitable for accommodating the deformed protruding part. According to some embodiments of the utility model, the electromagnetic steel plate is provided with an even number of the magnet through holes, and the magnet through holes of one type and the magnet through holes of the second type are the same in number and are sequentially arranged. According to some embodiments of the utility model, the electromagnetic steel plate is provided with a rotating shaft through hole for installing a rotating shaft, and the rotating shaft through hole is coaxial with the symmetry center of the plurality of the magnet through holes; The electromagnetic steel plates are provided with a plurality of heat dissipation grooves communicated with the through holes of the rotating shaft, and the heat dissipation spaces are formed by surrounding the preceding electromagnetic steel plates, the heat dissipation grooves of the preceding electromagnetic steel plates, the following electromagnetic steel plates and the rotating shaft. According to some embodiments of the utility model, the plurality of heat dissipation grooves are arranged symmetrically around the center of the through hole of the rotating shaft. According to some embodiments of the utility model, the symmetry center line of the heat dissipation groove coincides with the symmetry center line of the two adjacent magnet through holes. According to some embodiments of the utility model, the electromagnetic steel plate is provided with a magnet avoiding groove communicated with the magnet through holes, and each two magnet avoiding grooves ar