Stator core, stator and motor

Abstract

The invention discloses a stator core, a stator and a motor. The stator core is arranged at the periphery of a rotor and comprises a plurality of single stators, the single stators are arranged at intervals along a circumferential direction, each single stator comprises a yoke part, two main tooth parts and a tooth boot part, the yoke part is formed by laminating a plurality of yoke part punching sheets along an axial direction of the rotor, the plurality of yoke part punching sheets extend along the circumferential direction of the rotor, the two main tooth parts are respectively clamped at two ends of the circumferential direction of the yoke part, each main tooth part is formed by laminating a plurality of tooth part punching sheets, the plurality of tooth part punching sheets are perpendicular to the yoke part and extend along a radial direction of the yoke part, an extension part is arranged at an inner end of the main tooth part and extends along an axial direction of the yoke part, at least one end of the extension part protrudes out of the main tooth part, the tooth boot part is formed by laminating a plurality of tooth boot punching sheets, a closed groove is formed in the tooth boot part and penetrates through the tooth boot part along the axial direction of the yoke part, and the extension part is clamped in the closed groove. By the stator core according to the embodiment of the invention, the magnetism gathering capability can be improved, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a stator core, a stator with the stator core and a motor with the stator. Background technique [0002] In the motor in the related art, the stator yoke, teeth and tooth shoe are punched out as one piece, so the dimensions of the yoke, tooth and tooth shoe in the axial direction of the stator are consistent. For a unit surface area For a rotor with a weak magnetic field or a low rotation frequency, in order to save stator materials and improve its performance, the size of the yoke and teeth needs to be thinner and the area of ​​the tooth shoe larger, but affected by the radius of the inner circle of the stator, through Increasing the width of the tooth shoe to increase the area of ​​the tooth shoe has limited effect, and if the tooth shoe is expanded in the axial direction of the stator, the axial dimension of the yoke and the teeth will be lengthened, thereby increasing the mater...

AI Technical Summary

Problems solved by technology

[0002] In the motor in the related art, the stator yoke, teeth and tooth shoe are punched out as one piece, so the dimensions of the yoke, tooth and tooth shoe in the axial direction of the stator are consistent. For a unit surface area For a rotor with a weak magnetic field or a low rotation frequency, in order to save stator materials and improve its performance, the size of the yoke and teeth needs to be thinner and the area of ​​the tooth shoe larger, but affected by the radius of the inner circle of the stator, through Increasing the width of the tooth shoe to increase the area of ​​the tooth shoe has limited effect, and if the tooth shoe is expanded in the axial direction of the stator, the axial dimension of the yoke and the teeth will be lengthened, thereby increasing the material consumption of the iron core and winding, resulting in an increase in cost

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