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CN-122026651-A - Motor and preparation method thereof

CN122026651ACN 122026651 ACN122026651 ACN 122026651ACN-122026651-A

Abstract

The application provides a motor, which comprises a rotor and a rotating shaft, wherein the rotor comprises a magnetic steel part, the magnetic steel part is positioned on the outer side of the circumferential side wall of the rotating shaft, the motor comprises a first limiting part, the first limiting part extends along the axial direction of the motor and comprises a protruding part and a concave part, the protruding part protrudes along the radial direction of the motor, the protruding part is connected with one of the rotating shaft and the magnetic steel part, the concave part is connected with the other of the rotating shaft and the magnetic steel part, the protruding part is connected with the concave part, and the magnetic steel part is circumferentially limited with the rotating shaft so as to facilitate the butt joint assembly of the magnetic steel part and the rotating shaft.

Inventors

  • Request for anonymity
  • Request for anonymity
  • Request for anonymity

Assignees

  • 浙江三花智能控制股份有限公司

Dates

Publication Date
20260512
Application Date
20241112

Claims (13)

  1. 1. The motor is characterized by comprising a rotor (2) and a rotating shaft (1), wherein the rotor (2) comprises a magnetic steel part (21), and the magnetic steel part (21) is positioned on the outer side of a circumferential side wall (11) of the rotating shaft (1); The motor (100) comprises a first limiting part (5), the first limiting part (5) extends along the axial direction of the motor (100), the first limiting part (5) comprises a protruding part (51) and a recessed part (52), the protruding part (51) protrudes along the radial direction of the motor (100), the protruding part (51) is connected with one of the rotating shaft (1) and the magnetic steel part (21), the recessed part (52) is connected with the other of the rotating shaft (1) and the magnetic steel part (21), the protruding part (51) is connected with the recessed part (52), and the magnetic steel part (21) is circumferentially limited with the rotating shaft (1).
  2. 2. The motor according to claim 1, wherein the protruding portion (51) comprises a protruding rib (511), the protruding rib (511) extends along the axial direction of the rotating shaft (1) and protrudes outwards along the radial direction of the rotating shaft (1), the protruding rib (511) is assembled with or is integrated with the circumferential side wall (11) of the rotating shaft (1), the recessed portion (52) is provided with a groove (521), the groove (521) is located on the inner side wall of the magnetic steel portion (21), the groove (521) extends along the axial direction of the magnetic steel portion (21), and the protruding rib (511) is located at least partially in a groove cavity of the groove (521).
  3. 3. The motor according to claim 1, characterized in that the motor (100) comprises a second limiting portion (6), the second limiting portion (6) comprises a baffle ring portion (61), at least one end of the rotating shaft (1) is provided with the baffle ring portion (61), the baffle ring portion (61) extends along the radial direction of the rotating shaft (1), the baffle ring portion (61) is in contact with at least one end of the magnetic steel portion (21), and the radial dimension of the baffle ring portion (61) is larger than the radial dimension of the circumferential side wall (11).
  4. 4. A machine according to claim 2 or 3, characterized in that the magnet steel part (21) comprises at least one magnet steel component (211), the magnet steel component (211) comprises a plurality of magnet steel subgroups (1-1), the magnet steel subgroups (1-1) are distributed along the circumferential direction of the rotating shaft (1), the magnetic poles of adjacent magnet steel subgroups (1-1) are opposite, the magnet steel subgroups (1-1) comprise a plurality of block magnet steels (1-11), the magnetic poles of the block magnet steels (1-11) in the same magnet steel subgroup (1-1) are the same, the magnetic poles of part of the block magnet steels (1-11) in the same magnet steel subgroup (1-1) are oriented in the forward direction, and the magnetic poles of the rest of the block magnet steels (1-11) are oriented in the oblique direction.
  5. 5. The motor according to claim 4, wherein the magnetic steel part (21) comprises a plurality of magnetic steel components (211), the plurality of magnetic steel components (211) are arranged along the axial direction of the rotating shaft (1), adjacent magnetic steel subgroups (1-1) of the adjacent magnetic steel components (211) have the same magnetic poles, and at least one block magnetic steel (1-11) of the same magnetic steel subgroup (1-1) is provided with the notch (1-111) to form the groove (521) along the axial direction of the rotating shaft (1) along with the notch (1-111) in a row.
  6. 6. The electric machine according to claim 5, characterized in that the small group of magnetic steels (1-1) comprises a main block magnetic steel (1-12) and an auxiliary block magnetic steel (1-13), the main block magnetic steel (1-12) and the auxiliary block magnetic steel (1-13) are connected, the main block magnetic steel (1-12) is located between two adjacent auxiliary block magnetic steels (1-13), the magnetic pole orientation of at least one main block magnetic steel (1-12) is forward, the magnetic pole orientation of the auxiliary block magnetic steel (1-13) is oblique, and at least one auxiliary block magnetic steel (1-13) is provided with the gap (1-111).
  7. 7. A motor according to any one of claims 1 to 3, characterized in that the motor (100) comprises a sheath assembly (7), the sheath assembly (7) comprises a sleeve (72), a first retainer ring (71) and a second retainer ring (73), the sleeve (72) extends in the axial direction of the rotating shaft (1), the sleeve (72) has a cylinder cavity (721), the magnetic steel part (21) is at least partially located in the cylinder cavity (721), the first retainer ring (71) is connected with one end of the rotating shaft (1), the second retainer ring (73) is connected with the other end of the rotating shaft (1), the first retainer ring (71) extends in the radial direction of the rotating shaft (1), the second retainer ring (73) extends in the radial direction of the rotating shaft (1), and the sleeve (72) is located between the first retainer ring (71) and the second retainer ring (73).
  8. 8. A motor according to any one of claims 1 to 3, characterized in that the rotating shaft (1) comprises a main shaft portion (12), a sub-shaft portion (13) and a shaft lever portion (14), the main shaft portion (12) is connected with the sub-shaft portion (13), the sub-shaft portion (13) is connected with the shaft lever portion (14), a radial dimension of the main shaft portion (12) is larger than a radial dimension of the sub-shaft portion (13), a radial dimension of the sub-shaft portion (13) is larger than a radial dimension of the shaft lever portion (14), the magnetic steel portion (21) is connected with a circumferential side wall (11) of the main shaft portion (12), the first limiting portion (5) is connected with the main shaft portion (12), and the main shaft portion (12) is at least partially in a hollow cylindrical structure.
  9. 9. The motor of claim 8, wherein the main shaft portion (12) includes a first shaft portion (121) and a second shaft portion (122), the first shaft portion (121) and the second shaft portion (122) are in positioning engagement, the first shaft portion (121) has a shaft cavity (Q), the shaft cavity (Q) is penetrated along an axial direction of the main shaft portion (12), the second limit portion (6) includes a stop ring portion (61), the stop ring portion (61) is connected with the second shaft portion (122), the stop ring portion (61) extends in a radial direction of the second shaft portion (122), a radial dimension of the stop ring portion (61) is larger than a radial dimension of the first shaft portion (121), the second shaft portion (122) includes an extension portion (2-1), the extension portion (2-1) is located at one side of the stop ring portion (61), the extension portion (2-1) is located at least partially within the shaft cavity (Q), the shaft (1) includes a third limit portion (8), the third limit portion (8) includes an extension portion (81) and the extension portion (81) forms a limit key portion (81), the limit key (81) is at least partially located in the limit groove (82).
  10. 10. The motor according to any one of claims 1 to 9, wherein the motor (100) comprises a casing (4) and a stator (3), the stator (3) is located outside the magnetic steel part (21), the stator (3) comprises a stator core (33), a coil winding (32) and an insulating member (31), the insulating member (31) is coated on at least part of the outer wall of the stator core (33), the coil winding (32) is wound on the insulating member (31), the stator (3) is located outside the magnetic steel part (21), the stator core (33) is distributed along the circumferential direction of the rotating shaft (1), the outer side of the stator core (33) is fixedly connected with the inner wall of the casing (4), and a clearance gap (O) is formed between the inner side of the stator core (33) and the magnetic steel part (21).
  11. 11. The motor according to claim 10, characterized in that the housing (4) comprises a main body part (41), a first cover part (42) and a second cover part (43), the motor (100) comprises a first bearing (9) and a second bearing (10), the main body part (41) is of a cylindrical structure, the main body part (41) is provided with a first port (411) and a second port (412), the first cover part (42) is connected with one end of the main body part (41), the first cover part (42) is positioned at the first port (411), the second cover part (43) is connected with the other end of the main body part (41), the second cover part (43) is positioned at the second port (412), the first cover part (42) is provided with a first through hole (421), the second cover part (43) is provided with a second through hole (431), one end part of the rotating shaft (1) is positioned at the first through hole (421) and the other end part (431) is exposed out of the second through hole (431); The first cover body (42) comprises a first bearing part (422), the second cover body (43) comprises a second bearing part (432), the rotating shaft (1) comprises a first bearing seat (15) and a second bearing seat (16), the first bearing (9) is connected with the first bearing part (422) and the first bearing seat (15), and the second bearing (10) is connected with the second bearing part (432) and the second bearing seat (16).
  12. 12. A method of manufacturing an electric motor, the method comprising: Providing a plurality of block magnetic steels (1-11), equally dividing the plurality of block magnetic steels (1-11) into a plurality of groups, fixedly connecting the plurality of block magnetic steels (1-11) in each group to obtain a magnetic steel subgroup (1-1), performing magnetic pole orientation on the block magnetic steels (1-11) of the same magnetic steel subgroup (1-1), magnetizing each group of magnetic steels (1-1), obtaining the same magnetic poles of the plurality of block magnetic steels (1-11) of the same magnetic steel subgroup (1-1), fixedly connecting the plurality of block magnetic steels (1-1) to obtain a magnetic steel assembly (211), axially fixedly connecting the plurality of magnetic steel assemblies (211) along a motor (100) to obtain a magnetic steel part (21), providing a rotating shaft (1) and a first limiting part (5), wherein the first limiting part (5) comprises a protruding part (51) and a concave part (52), the protruding part (51) is connected with one of the rotating shaft (1) and the magnetic steel subgroup (1-1), the concave part (52) is connected with the other magnetic steel (1-1) of the rotating shaft (1) and the other magnetic steel subgroup (1-1), axially pre-limiting the protruding part (21) and the protruding part (1-1) are axially assembled with the rotating shaft (1-1), the magnetic steel part (21) is fixedly connected with the rotating shaft (1).
  13. 13. The preparation method according to claim 12, wherein the preparation method comprises the steps of firstly adhering and fixing the plurality of block magnetic steels (1-11) of each magnetic steel subgroup (1-1), assembling the magnetic steel subgroup (1-1) with the rotating shaft (1) in a pre-positioning manner through the first limiting part (5), and adhering and fixing the magnetic steel part (21) with the rotating shaft (1) after all the magnetic steel subgroups (1-1) are assembled with the rotating shaft (1) in the pre-positioning manner.

Description

Motor and preparation method thereof Technical Field The application relates to the technical field of mechanical driving, in particular to a motor and a preparation method thereof. Background The motor of related art includes pivot and rotor, and the rotor includes the magnet steel, and the magnet steel table pastes in the circumference lateral wall outside of pivot, does not have locating component on the pivot circumference lateral wall in the related art, and the magnet steel can't be with the pivot advance location, spacing processing, owing to the repulsive interaction of the same magnetic pole of same group magnet steel in addition, takes place dislocation risk increase between magnet steel and the pivot assembly fixed time. Disclosure of Invention The application provides a motor for reducing dislocation risk of a magnetic steel part. The application provides a motor, which comprises a rotor and a rotating shaft, wherein the rotor comprises a magnetic steel part, the magnetic steel part is positioned at the outer side of the circumferential side wall of the rotating shaft, the motor comprises a first limiting part, the first limiting part extends along the axial direction of the motor and comprises a protruding part and a concave part, the protruding part protrudes along the radial direction of the motor, the protruding part is connected with one of the rotating shaft and the magnetic steel part, the concave part is connected with the other of the rotating shaft and the magnetic steel part, the protruding part is connected with the concave part, and the magnetic steel part is limited along the circumferential direction of the rotating shaft. The motor provided by the application comprises the first limiting part, wherein the first limiting part comprises the protruding part and the concave part, the protruding part is connected with the concave part, and the circumferential direction of the magnetic steel part and the rotating shaft can be pre-limited through the first limiting part, so that the dislocation risk of the magnetic steel part is reduced when the magnetic steel part is assembled and fixed with the rotating shaft. The application provides a preparation method of a motor, which comprises the steps of providing a plurality of block magnetic steels, equally dividing the block magnetic steels into a plurality of groups, fixedly connecting the block magnetic steels in each group to obtain a magnetic steel subgroup, carrying out magnetic pole orientation on the block magnetic steels of the same magnetic steel subgroup, magnetizing each group of magnetic steels to obtain the same magnetic poles of the block magnetic steels of the same magnetic steel subgroup, fixedly connecting the block magnetic steels to obtain a magnetic steel assembly, and fixedly connecting the block magnetic steel assemblies along the axial direction of the motor to obtain a magnetic steel part, providing a rotating shaft and a first limiting part, wherein the first limiting part comprises a protruding part and a concave part, the protruding part is connected with one of the rotating shaft and the magnetic steel subgroup, the concave part is connected with the other of the rotating shaft and the magnetic steel subgroup, the protruding part is connected with the concave part, the magnetic steel subgroup is axially assembled with the rotating shaft, the magnetic steel part is circumferentially pre-limited with the rotating shaft, and the magnetic steel part is fixedly connected with the rotating shaft. According to the motor manufacturing method provided by the application, the first limiting part is used for pre-limiting assembly of the magnetic steel subgroups, so that the risk of dislocation of adjacent magnetic steel subgroups in the assembly process of the magnetic steel parts and the rotating shaft can be reduced. Drawings Fig. 1 is a schematic perspective view of an electric motor according to the present application; FIG. 2 is a schematic cross-sectional view of the motor shown in FIG. 1; FIG. 3 is a schematic exploded view of the structure of the motor shown in FIG. 1; FIG. 4 is a schematic perspective view of the shaft, rotor and jacket assembly of the present application; FIG. 5 is a schematic cross-sectional view of the motor shown in FIG. 4; FIG. 6 is another perspective cross-sectional schematic view of the motor shown in FIG. 4; fig. 7 is a schematic perspective view of the motor of fig. 6 in cross-section FIG. 8 is a schematic perspective view of a magnetic steel part and a rotating shaft according to the present application; FIG. 9 is a schematic plan view of the magnetic steel part and the rotating shaft shown in FIG. 8; FIG. 10 is a schematic exploded view of the structure of the partial magnetic steel subgroup shown in FIG. 8; FIG. 11 is a schematic cross-sectional view of the magnetic steel portion and the rotary shaft shown in FIG. 8; FIG. 12 is a perspective view of a spindle of the present application