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Stator core structure, stator provided with same and motor

A technology of stator iron core and iron core, applied in the direction of magnetic circuit shape/style/structure, electrical components, electromechanical devices, etc., can solve the problems of low system control accuracy, large cogging torque, large motor vibration, etc., and achieve improved The effect of system control accuracy, low cost and simple manufacturing process

Inactive Publication Date: 2017-04-19
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the technical defects that the chain stator core structure in the prior art has a large cogging torque in application, resulting in large motor vibration, high noise and low system control precision, thereby providing a A stator core structure with small cogging torque, low motor vibration, low noise and high system control precision

Method used

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  • Stator core structure, stator provided with same and motor
  • Stator core structure, stator provided with same and motor
  • Stator core structure, stator provided with same and motor

Examples

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Embodiment 1

[0037] This embodiment provides a stator core structure, such as image 3 As shown, it includes several iron core units 1 that are connected end to end and form a ring structure. Each of the iron core units 1 has an outer ring edge 2, a tooth shoe 3 and a tooth yoke 4 connecting the two. All the teeth Boots 3 are distributed on the same circumference and enclose to form an annular cavity 5; any adjacent two of said tooth boots 3 are not in contact with each other and form notches 6; two adjacent said notches 6 have different widths, and the two notches 6 separated by one notch 6 have the same width.

[0038] In the stator core structure of this embodiment, any two adjacent tooth shoes 3 are not in contact with each other, and a notch 6 is formed. The width of the two adjacent notches 6 is different, and the two slots of a notch 6 are separated. The width of the mouth 6 is the same; through the above settings, when the motor is running, the distribution of the magnetic force l...

Embodiment 2

[0046] This embodiment provides a stator, such as Figure 5 As shown, it includes several stator core structures superimposed and fixed together in the axial direction, and the stator core structure is the stator core structure described in Embodiment 1.

[0047] The outer ring edge 2 is provided with a first installation hole 7, and after a plurality of the stator core structures are stacked, they are fixed through the first installation hole 7 with rivets; the tooth yoke 3 is provided with a second installation hole 7. Hole 8, after several stator core structures are stacked, use rivets to pass through the second installation hole 8 and fix them.

[0048] The stator of this embodiment adopts the stator core structure in Embodiment 1, so it naturally has all the advantages brought by the above-mentioned structure.

Embodiment 3

[0050] This embodiment provides a motor with the stator core structure as described in Embodiment 1.

[0051] The motor of this embodiment has all the advantages brought by the above-mentioned structure because it adopts the above-mentioned stator core structure.

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Abstract

The invention provides a stator core structure, a stator provided with the same and a motor. The stator core structure comprises a plurality of core units which are connected end to end and form a ring structure, each core unit is provided with an outer ring edge, a tooth boot and a tooth yoke connecting the outer ring edge and the tooth boot, and all of the tooth boots are distributed on the same circumference and form an annular inner cavity in an enclosing manner; any two adjacent tooth boots are not mutually contacted and form a notch; and two adjacent notches are different in width, and two notches spaced by one notch are the same in width. The stator core structure provided by the invention can significantly reduce the cogging torque, reduce motor vibration and noises and greatly improve the system control precision.

Description

technical field [0001] The invention relates to the technical field of motor stator structure, in particular to a stator core structure, a stator having the same and a motor. Background technique [0002] With the continuous improvement of the performance of permanent magnet materials, permanent magnet brushless DC motors are more and more widely used in high-performance speed and position control systems. A permanent magnet brushless DC motor generally includes a stator core forming an inner cavity, and a rotor rotatably installed inside the inner cavity, windings are wound on the stator core, and permanent magnets are fixedly installed on the outer wall of the rotor. [0003] The structure of the chain stator core in the prior art is as follows: figure 2 As shown, it includes several interconnected iron core units 01, and each iron core unit 01 has an outer ring edge 02, a tooth shoe 03, and a tooth yoke 04 connecting the two, and between two adjacent outer ring edges 02 ...

Claims

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Application Information

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IPC IPC(8): H02K1/14
CPCH02K1/148H02K2213/03
Inventor 徐俊杰王志强唐林蔡易霖
Owner GREE ELECTRIC APPLIANCES INC