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Armature cores for rotating electrical machines

A technology for rotating electrical machines and armature cores, applied in the field of armature cores, can solve problems such as poor productivity, narrow slot openings, and complicated armature coil storage, and achieve the effects of improving productivity and good operating characteristics

Active Publication Date: 2021-03-09
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the shoe is provided at the end of the magnetic pole tooth, the width of the slot opening becomes narrower than the slot width
Therefore, the work of accommodating the armature coils in the slots becomes complicated, resulting in a problem of poor productivity.

Method used

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  • Armature cores for rotating electrical machines
  • Armature cores for rotating electrical machines
  • Armature cores for rotating electrical machines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0032] figure 1 It is a plan view showing the rotating electric machine 1 according to Embodiment 1 of the present invention. exist figure 1 Among them, a rotating electrical machine 1 is configured to include a rotor 2 and an armature 5 . The rotor 2 is fixed to a rotating shaft 4 rotatably supported by a casing (not shown), and is arranged inside the casing. On the other hand, the armature 5 is held by the housing so as to surround the rotor 2 with a certain gap therebetween.

[0033] The rotor 2 includes a rotating shaft 4 and a rotor core inserted into the shaft center and fixed to the rotating shaft 4 . Furthermore, a plurality of magnets 3 are arranged at equal intervals in the circumferential direction on the outer peripheral surface of the rotor core 11 .

[0034] The armature 5 includes an armature core 6 and an armature coil 9 . Armature core 6 has pole teeth 8 . A plurality of magnetic pole teeth 8 protrude radially inward from the inner peripheral wall surfac...

Embodiment approach 2

[0055] Figure 8 It is a top view showing rotating electric machine 100 according to Embodiment 2 of the present invention. Figure 9 It is a partially enlarged view of the armature 5 of the rotating electrical machine 100 according to Embodiment 2 of the present invention. The rotating electric machine 100 according to the second embodiment of the present invention has the same configuration as the rotating electric machine 1 according to the first embodiment of the present invention except that it has the fitting portion 40 and the fitting portion 41 .

[0056] Specifically, in the first embodiment described above, only the wedges 30 are used to position and fix the shoe members 80 , 81 . In contrast, in Embodiment 2, it is possible to further use the fitting portion 40 formed by the convex portion of the shoe member 80 and the concave portion of the shoe member 81 , and the concave portion of the magnetic pole tooth 8 and the convex portion of the shoe member 80 . The fit...

Embodiment approach 3

[0068] In Embodiments 1 and 2 of the above invention, the case where both the shoe members 80 and 81 are separate from the magnetic pole teeth 8 has been described. On the other hand, in the third embodiment, a case will be described in which the shoe member 81 and the magnetic pole teeth 8 which do not perform sliding operation are integrally formed.

[0069] Figure 12 It is a partially enlarged view of the armature 5 of the rotating electrical machine 100 according to Embodiment 3 of the present invention. Such as Figure 12 As shown, even if the shoe member 81 and the magnetic pole teeth 8 that do not slide are integrally configured, the shoe member 80 can be rotated, and the same effects as those of the first and second embodiments described above can be obtained. At this time, the core pieces 8B, 8D are integrally formed with the core piece 7B, the core piece 8F is formed integrally with the core piece 7A, and the shaft portions 13, 14 are provided on the core pieces 7...

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Abstract

In the armature core of the rotating electric machine according to the present invention, the shoe is a separate part from the magnetic pole tooth, the shoe part is formed by laminating a plurality of core pieces, the protrusion at the end of the magnetic pole tooth is provided with a shaft part, and the shoe part is provided with a The shaft or the long hole is connected to the magnetic pole tooth and the shoe by fitting the shafts of the magnetic pole tooth and the shoe or the shaft and the long hole, and the shoe can be connected to the magnetic pole by moving along the shaft and the long hole. The sliding action in the direction perpendicular to the protruding direction of the tooth can be followed by the rotating action with the shaft portion as the rotation axis.

Description

technical field [0001] The present invention relates to a structure of an armature core for a rotary electric machine, and to an armature core for a rotary electric machine capable of improving the productivity of the armature core without impairing the good operating characteristics of the rotary electric machine. Background technique [0002] Conventionally, a rotating electric machine is known in which a plurality of armature coils are wound around a plurality of magnetic pole teeth of an armature core to form an armature. The armature core has an annular back yoke and a plurality of magnetic pole teeth protruding from the back yoke at equal intervals. Spaces called slots are formed between the magnetic pole teeth, and armature coils are housed in the respective slots. [0003] In order to prevent an increase in iron loss due to eddy currents, the armature core is composed of laminated steel sheets in which thin plate-shaped core pieces are laminated. Furthermore, it is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/08
CPCH02K1/08
Inventor 梅田隆司
Owner MITSUBISHI ELECTRIC CORP
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