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rotating electrical machine

A technology for rotating electrical machines and pole teeth, applied in electromechanical devices, electrical components, electrical components, etc., can solve the problems of reduced wall thickness, reduced slot area, reduced insulator strength, etc., to improve the strength and prevent the slot area. The effect of reducing and increasing wall thickness

Active Publication Date: 2019-03-12
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the notch is also formed in the portion of the flange facing the slot, and the wall of the insulator is also arranged in the notch formed in the flange. Therefore, there is a problem that the The wall thickness of the part of the insulator at the notch is reduced, and the strength of the insulator is reduced
In addition, in order to increase the strength of the insulator, if the thickness of the part of the insulator disposed in the notch formed in the flange portion is increased, there is a problem that the area of ​​the slot where the winding is disposed decreases.

Method used

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  • rotating electrical machine
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Experimental program
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Embodiment approach 1

[0038] figure 1 is an exploded perspective view showing a main part of the rotating electrical machine according to Embodiment 1 of the present invention, figure 2 yes means figure 1 A side view of the main part of the rotating electrical machine, image 3 is along figure 2 The sectional view of the line III-III. The rotating electrical machine includes: a stator core 1 having a core back 11 and pole teeth 12 extending radially inward from the core back 11; an insulating insulator 2 provided on each of the pole teeth 12. the two ends in the axial direction; and the insulating paper 3 , which is respectively provided on both sides of the circumferential direction of each pole tooth portion 12 .

[0039] exist figure 1 In , one core back 11 is shown, but the stator core 1 has a plurality of core backs 11 . A plurality of core backs 11 are arranged on the circumference. That is, the stator core 1 is divided into a plurality of core backs 11 . The stator core 1 is formed...

Embodiment approach 2

[0055] Figure 5 It is a plan view showing main parts of the stator core of the electric rotating machine according to Embodiment 2 of the present invention. A recessed portion 14 recessed in the axial direction is formed on an axial end surface of the stator core 1 . The concave portion 14 is formed on the convex portion 124 . Recesses 14 are respectively formed at both ends of the pole tooth portion 12 in the circumferential direction. The pair of recesses 14 are arranged to be displaced from each other in the radial direction. The pair of recesses 14 is left-right asymmetric. That is, unlike the first embodiment, the pair of recesses 14 are not adjacent to each other in the circumferential direction. The convex portion of the insulator 2 inserted into the concave portion 14 by fitting is arranged to correspond to the position of the concave portion 14 of the stator core 1 . Other structures are the same as those in the first embodiment.

[0056] As described above, ac...

Embodiment approach 3

[0058] Figure 6 It is a plan view showing main parts of the stator core of the rotating electric machine according to Embodiment 3 of the present invention. A plurality of recesses 15 recessed in the axial direction are formed on an axial end surface of the stator core 1 . The concave portion 15 is formed on the core back 11 . The plurality of recesses 15 are arranged so as to be separated in the circumferential direction. The convex portion of the insulator 2 inserted into the concave portion 15 by fitting is arranged to correspond to the position of the concave portion 15 of the stator core 1 . Other structures are the same as those in the first embodiment.

[0059] As described above, according to the rotating electric machine according to Embodiment 3 of the present invention, the concave portion 15 is arranged on the core back 11, so that when the size of the core back 11 is large, the shrinkage of the magnetic path can be reduced, and the performance of the rotating ...

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PUM

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Abstract

A rotary motor can prevent the decreasing of groove area and is capable of enhancing the strength of an insulator. The rotary motor comprises a stator core. The stator core comprises a core rear part and a tooth part, wherein the tooth part comprises a tooth body and a flange part; an insulating insulator arranged on the axial end of the tooth part; and insulating paper arranged on the peripheral surface of the tooth part. A radially extending notch portion is formed in the radial full area of the circumferential end portion at the axial end portion of the pole tooth portion so that the convex portion is formed at the axial end portion of the pole tooth portion and is observed in the axial direction. The dimension between the circumferential side surface of the convex portion and the circumferential end face of the flange portion is larger than the circumferential length between the circumferential side surface of the convex portion and the circumferential end face of the pole tooth body, and the insulator has a wall part arranged on the notch part.

Description

technical field [0001] The present invention relates to a rotating electrical machine provided with an insulator on a stator core. Background technique [0002] Conventionally, there is known a rotating electrical machine including: a stator core having a core back portion and a teeth portion extending radially inward from the core back and extending inwardly from the core back. The front end portion has a flange portion extending outward in the circumferential direction; an insulating insulator provided on an axial end portion of the pole tooth portion; and an insulating sheet (sheet) provided on the periphery of the pole tooth portion. To the side, a notch is formed in the entire area of ​​the portion opposite to the slot (slot) at the axial end of the pole tooth, and the insulator has a wall portion ( For example, refer to Patent Document 1). [0003] Patent Document 1: Japanese Patent Laid-Open No. 2001-112205 [0004] However, the notch is also formed in the portion ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K3/34
CPCH02K3/345
Inventor 井仓穣
Owner MITSUBISHI ELECTRIC CORP