Stator core, stator, manufacturing method thereof, motor and household appliance

Abstract

The invention provides a stator core, a stator, a manufacturing method thereof, a motor and a household appliance. The stator core comprises a yoke portion, a plurality of tooth portions and a plurality of shoe portions, wherein the plurality of tooth portions are arranged along the circumferential direction of the yoke portion, one shoe is disposed on one end of the tooth portion corresponding tothe shoe portion, wherein the one end of the tooth portion is far away from the yoke portion; at least two splicing modules are spliced to form the stator core; the shoe portions and the yoke portionare respectively located on the two splicing modules; and the splicing modules comprise a first splicing module and a second splicing module; the first splicing module and the second splicing moduleare detachably connected with each other; positioning slots are formed in one of the first splicing module and the second splicing module, and the other splicing module is provided with matching protrusions; the matching protrusions are inserted in the positioning slots; the first splicing module and the second splicing module are spliced along the radial direction of the yoke portion; and the length of the positioning slot is smaller than the length of the yoke portion along an axial direction parallel to the yoke portion. The stator core has the advantages of simple structure, convenient assembly and accurate positioning.

Description

technical field [0001] The invention relates to the field of motors, in particular to a stator core, a stator and a manufacturing method thereof, a motor and a household appliance. Background technique [0002] The yoke and teeth of the stator of the existing motor are usually integrated. When the stator winding coil is wound on the stator core, it is difficult for the equipment to realize multi-strand parallel winding and embedding. At the same time, the motor often cannot reach a higher slot. The full rate leads to lower performance of the motor, the distribution of windings in the finished product is chaotic, and the structure is not compact, which affects the quality of the finished product. [0003] The stator of the existing motor also has a structure in which the teeth and the yoke are detachable, but the teeth and the yoke of the existing stator are generally spliced ​​by cooperating with dovetail-shaped protrusions and dovetail grooves. This structure results in th...

AI Technical Summary

Problems solved by technology

This structure results in that each tooth can only be inserted into the yoke longitudinally from top to bottom or from bottom to top when splicing each other. In order to make the splicing process smooth and avoid friction between the teeth and the yoke, when splicing Usually, the gap fit method is adopted, and the existence of the gap will cause the iron core after splicing to become loose, making it difficult to ensure the roundness, which will cause noise and vibration when the motor is running, and affect the service life of the motor

In addition, the existence of the gap also increases the effective gap between the stator and the rotor, which affects the performance of the motor

In addition, the up-and-down insertion splicing method is easy to deform the interface between the tooth part and the yoke part, which will further affect the roundness of the spliced ​​iron core and affect the performance of the motor

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