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CN-224233407-U - Stator assembly and motor

CN224233407UCN 224233407 UCN224233407 UCN 224233407UCN-224233407-U

Abstract

The utility model provides a stator assembly and a motor. The stator assembly includes a stator core including a plurality of teeth portions with an opening portion formed between ends of one side in a radial direction of adjacent two teeth portions, a stator coil at least a portion of which is received between the adjacent two teeth portions, and a wedge disposed on one side in the radial direction of the stator coil and on the other side in the radial direction of the opening portion, the wedge including a base portion opposite to the opening portion, the base portion being formed with a groove recessed toward the other side in the radial direction, thereby enabling to reduce the occurrence of buckling phenomenon after the stator coil is mounted while preventing the stator coil from protruding or coming off from the stator core.

Inventors

  • Sugiyama Onsi

Assignees

  • 尼得科株式会社

Dates

Publication Date
20260512
Application Date
20250331

Claims (10)

  1. 1. A stator assembly, the stator assembly comprising: a stator core including a plurality of teeth, wherein an opening is formed between ends of one side in a radial direction of two adjacent teeth; a stator coil having at least a part thereof received between two adjacent teeth, and A wedge block located on one side in a radial direction of the stator coil and on the other side in the radial direction of the opening, the wedge block including a base portion opposed to the opening, the base portion being formed with a groove recessed toward the other side in the radial direction.
  2. 2. The stator assembly of claim 1 wherein the stator assembly is formed from a plurality of stator segments, The base comprises a first side wall, a second side wall and a bottom connecting the first side wall and the second side wall, wherein the bottom is positioned closer to the other radial side than the first side wall and the second side wall, and the first side wall, the second side wall and the bottom enclose the groove.
  3. 3. The stator assembly of claim 2 wherein the stator assembly is formed from a plurality of stator segments, The bottom is longer than the first and second sidewalls as viewed in the axial direction.
  4. 4. The stator assembly of claim 2 wherein the stator assembly is formed from a plurality of stator segments, The first and second side walls are of equal length as viewed in the axial direction.
  5. 5. The stator assembly of claim 2 wherein the stator assembly is formed from a plurality of stator segments, The depth of the grooves is equal at each position in the axial direction.
  6. 6. The stator assembly of claim 2 wherein the stator assembly is formed from a plurality of stator segments, The wedge block also comprises a first supporting part and a second supporting part which are respectively arranged opposite to the two adjacent tooth parts, the base part is connected with the first supporting part and the second supporting part, The first side wall is connected with the first supporting part, a first angle is formed at the joint of the first side wall and the first supporting part, The second side wall is connected with the second supporting part, a second angle is formed at the connection part of the second side wall and the second supporting part, The angle of the first angle is equal to the angle of the second angle.
  7. 7. The stator assembly of claim 6 wherein the stator assembly is formed from a plurality of stator segments, The angle of the first angle and the angle of the second angle are both smaller than 90 degrees.
  8. 8. The stator assembly of claim 6 wherein the stator assembly is formed from a plurality of stator segments, The greater the depth of the groove, the smaller the angle of the first angle and the angle of the second angle.
  9. 9. The stator assembly of claim 6 wherein the stator assembly is formed from a plurality of stator segments, The distance between the first angle and the second angle is greater than or equal to the size of the opening portion when viewed in the axial direction.
  10. 10. A motor comprising the stator assembly of any one of claims 1 to 9.

Description

Stator assembly and motor Technical Field The present utility model relates to the field of electromechanics, and in particular to a stator assembly and a motor. Background With the development of science and technology, the application field of motors is becoming wider and wider, and the motors are used in a plurality of electric products. These electrical products may be, for example, devices or components comprising motors, such as any in-vehicle apparatus, home appliances, office automation equipment, industrial equipment, transportation equipment, or component parts of equipment. In a conventional motor structure, a motor includes a stator assembly including a stator core and a stator coil housed in the stator core, and a rotor rotatable with respect to the stator, the stator coil is mounted between two adjacent teeth of the stator core, and a wedge is inserted into a slot in order to prevent the coil from falling out of a slot formed by the two adjacent teeth. It should be noted that the foregoing description of the background art is only for the purpose of providing a clear and complete description of the technical solution of the present utility model and is presented for the convenience of understanding by those skilled in the art. The above-described solutions are not considered to be known to the person skilled in the art simply because they are set forth in the background of the utility model section. Disclosure of utility model The inventors found that in the above-described conventional motor structure, the stator coil is mounted between two adjacent teeth of the stator core, and buckling phenomenon such as the wedge receiving the pressing force of the stator coil often occurs, which causes the wedge to protrude toward the extending direction of the teeth, and further causes the stator coil to protrude or separate from the stator core. To solve one or more of the above problems or other similar problems, embodiments of the present utility model provide a stator assembly capable of reducing the occurrence of buckling phenomenon after the stator coil is mounted while preventing the stator coil from protruding or coming off from the stator core. According to a first aspect of an embodiment of the present utility model, there is provided a stator assembly including a stator core including a plurality of teeth portions with an opening formed between ends of one side in a radial direction of adjacent two teeth portions, a stator coil at least a portion of which is received between adjacent two teeth portions, and a wedge located on one side in the radial direction of the stator coil and on the other side in the radial direction of the opening, the wedge including a base portion opposite to the opening, the base portion being formed with a groove recessed toward the other side in the radial direction. In some embodiments, the base includes a first sidewall, a second sidewall, and a bottom connecting the first sidewall and the second sidewall, the bottom being located closer to the other radial side than the first sidewall and the second sidewall, the first sidewall, the second sidewall, and the bottom enclosing the recess. In some embodiments, the bottom is longer than the first and second sidewalls as viewed in an axial direction. In some embodiments, the first sidewall and the second sidewall are equal in length when viewed in an axial direction. In some embodiments, the depth of the grooves is equal at each location in the axial direction. In some embodiments, the wedge further comprises a first supporting portion and a second supporting portion, the first supporting portion and the second supporting portion are respectively arranged opposite to the two adjacent tooth portions, the base portion is connected with the first supporting portion and the second supporting portion, the first side wall is connected with the first supporting portion, a first angle is formed at the connection position of the first side wall and the first supporting portion, the second side wall is connected with the second supporting portion, a second angle is formed at the connection position of the second side wall and the second supporting portion, and the angle of the first angle is equal to the angle of the second angle. In some embodiments, the angle of the first angle and the angle of the second angle are both less than 90 degrees. In some embodiments, the greater the depth of the groove, the smaller the angle of the first angle and the angle of the second angle. In some embodiments, the distance between the first angle and the second angle is greater than or equal to the size of the opening, as viewed in the axial direction. According to another aspect of an embodiment of the present utility model, there is provided a motor comprising a stator assembly according to any of the above embodiments. One of the advantages of the embodiment of the utility model is that the base part of the wedge block opposite to the openi