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Stator for electrical rotating machine

A technology for motors and stators, applied in electric components, electrical components, electromechanical devices, etc., can solve problems such as difficult operation, fixed position, and exposed insulating film, and achieve the effect of reliable positioning

Active Publication Date: 2012-05-23
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the slot insulation and interphase insulation are film-like insulators, it is difficult to handle and fix the position. For example, there is a problem that the insulation film is exposed from the opening of the slot during the operation of the motor.
Especially when the coil is wound near the opening of the slot in order to increase the space factor, such a problem becomes remarkable.

Method used

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  • Stator for electrical rotating machine
  • Stator for electrical rotating machine
  • Stator for electrical rotating machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0030] figure 1 It is a perspective view which shows the structure of the stator of the electric rotating machine which concerns on Embodiment 1 of this invention, figure 2 yes figure 1 sectional view of image 3 It is an exploded perspective view illustrating the structure of the split core and the insulator, Figure 4 yes figure 1 Enlarged part of the figure, Figure 5 It is an enlarged perspective view of a state where an insulator is attached to a split core, Image 6 yes figure 2 Enlarged part of the figure.

[0031] Such as Figure 1~3 As shown, the stator 1 is a stator 1 of a rotary electric machine configured by arranging a plurality of split iron cores 2 in a ring shape. A rotor (not shown) is disposed on the inner peripheral side of the stator 1 with a predetermined gap therebetween.

[0032] The split core 2 is composed of a back yoke 20 extending in the circumferential direction, a tooth 21 protruding from the center of the back yoke 20 toward the center...

Embodiment approach 2

[0052] In Embodiment 1 above, the split cores are not connected to each other. However, in Embodiment 2, a connected split core is used in which the rear ends of adjacently arranged split cores are connected by thin-walled parts. yoke each other. In addition, in the first embodiment described above, the insulating film is formed on each split core, but in the second embodiment, the insulating films attached to the adjacent split cores are connected to each other.

[0053] Hereinafter, Embodiment 2 will be described. In addition, the same code|symbol is attached|subjected to the same part as Embodiment 1 mentioned above, and description is abbreviate|omitted.

[0054] Figure 16 It is a figure for demonstrating the split iron core and insulating film of this Embodiment 2.

[0055] As shown in the drawing, the connected split core 2A has a shape in which the back yoke parts 20 of the split core 2 according to the first embodiment described above are connected by the thin-wall...

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Abstract

A stator for a dynamo-electric machine is provided with: pairs of insulators (3), each pair being disposed at both end surfaces of each split core (2) in the axial direction thereof; and insulation films (4) each mounted to both side surfaces of each tooth (21) and each insulating between a coil (5) wound around the tooth (21) and the split core (2). The insulators (3) are each provided with: protrusions (33) protruding in the circumferential direction from the tooth's tip (22); slits (34) which are provided in axial end surfaces of the protrusions (33), said axial end surfaces being located on the tooth's tip (22) side, and into which insulation films (4) are inserted; and ribs (35) formed on the end surfaces of the protrusions (33) in the circumferential direction. An insulation film (4) inserted into a slit (34) is folded back to the back yoke (20) side so as to sandwich the rib (35) and affixed between ribs (35) located at the tips of the protrusions (33) of adjacent insulators (3). As a result, the insulation films can be reliably affixed and can be prevented from leaking from slots.

Description

technical field [0001] The present invention relates to stator constructions for rotating electrical machines. Background technique [0002] In the stator of a conventional rotating electric machine, the slot insulation is to electrically insulate the teeth and the coil by arranging an insulating film along the slot shape in the slot and winding the coil on this basis, and the interphase insulation is by inserting and sandwiching the insulating film. It is provided between wound coils wound on adjacent teeth to achieve electrical insulation (for example, refer to Patent Document 1). [0003] Patent Document 1: Japanese Patent No. 4109016 (paragraph numbers [0007], [0008], figure 1 Wait) [0004] In recent years, the competition to increase the efficiency of electric motors has intensified. As one of the methods of contributing to higher efficiency, a technique is expected in which an insulator formed of a resin molded product is replaced with an insulating film for the pu...

Claims

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Application Information

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IPC IPC(8): H02K3/34H02K1/18
CPCH02K3/325H02K3/522H02K1/148H02K2203/12H02K1/18H02K3/34
Inventor 冈启一郎秋田裕之荒井利夫
Owner MITSUBISHI ELECTRIC CORP
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