Stator iron core, stator and motor

Abstract

The invention discloses a stator iron core, a stator and a motor. The stator iron core is arranged on the periphery of the rotor and includes a plurality of stator individuals arranged in the circumferential direction in a spaced manner. Each stator individual includes a yoke part formed through stacking a plurality of yoke part punching sheets together; two main tooth parts clamped at the two circumferential ends of the yoke part and formed by stacking a plurality of tooth part punching sheets perpendicular to the yoke part punching sheets together, wherein each main tooth part is therein provided with an extension part extending along the axial direction of the yoke part and having at least one end protruding from the main tooth part, and a closed-mouth groove penetrating through the main tooth part in the stacking direction of the tooth part punching sheets; a main tooth boot part formed through stacking a plurality of main tooth boot punching sheets perpendicular to the tooth part punching sheets together and provided with a clip tongue through arranging an open groove whose opening direction is parallel with the stacking direction of the tooth part punching sheets, wherein the clip tongue is clamped in the closed-mouth groove from one side of the closed-mouth groove; an end tooth boot part formed through stacking a plurality of end tooth boot punching sheets together and clamped on the extension part. According to the embodiment of the invention, the magnetic concentrating capability of the stator iron core is enhanced and the cost is reduced.

Description

technical field [0001] The present 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 shoes are stamped as one piece, so the dimensions of the yoke, teeth and tooth shoes 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...

AI Technical Summary

Problems solved by technology

[0002] In the motor in the related art, the stator yoke, teeth and tooth shoes are stamped as one piece, so the dimensions of the yoke, teeth and tooth shoes 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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