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Armature for rotary electric apparatus and manufacturing method for the same

A technology of rotating electric machines and manufacturing methods, which is applied in the direction of manufacturing motor generators, manufacturing stator/rotor bodies, electric components, etc., and can solve problems such as prolonging processing time and prolonging the pressing process

Inactive Publication Date: 2012-05-09
ASMO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the manufacturing method of JP-U-7-44598 requires an extended pressing process and an extended processing time
In addition, in the manufacturing method of the armature disclosed in JP-U-7-44598, in order to turn over one core piece, an additional process is required

Method used

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  • Armature for rotary electric apparatus and manufacturing method for the same
  • Armature for rotary electric apparatus and manufacturing method for the same
  • Armature for rotary electric apparatus and manufacturing method for the same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0031] Below, will refer to Figures 1 to 7 An armature of a rotating electrical machine (rotating electrical machine) according to the first embodiment will be described. In this embodiment, the rotating electric machine includes a rotor core (rotor core).

[0032] figure 1 A rotor core related to the present first embodiment is shown. Such as figure 1As shown, the rotor core 10 includes a rotor center portion 11 , eight teeth 12 and ends 13 . The rotor center portion 11 is substantially circular in plan view. Eight teeth 12 protrude radially from the rotor central portion 11 . Tips 13 are respectively located at the ends of teeth 12 . Each end 13 is generally elliptical in plan view. The rotor center portion 11 has an axial insertion hole 11a at the center. The rotary shaft 14 is press-fitted into this axial insertion hole 11a. A winding 15 is wound onto each tooth 12 in a winding direction perpendicular to the direction in which each tooth 12 extends.

[0033] ...

no. 2 example

[0048] Subsequently, will refer to Figures 8 to 10B A rotor core according to a second embodiment is described. Such as Figure 8 As shown, according to the present embodiment, the insulating film 42 is formed on the surface of the laminated core 41 of the rotor core 40 . Such as Figure 8 , 9A , 9B, the laminated iron core 41 includes a first core piece 43a as a single piece, a plurality of second core pieces 43b, and a third core piece 43c as a single piece. The first core sheet 43a, the second core sheet 43b, and the third core sheet 43c are laminated.

[0049] Such as Figure 8 , 9A , 9B, each tooth portion 44a of the first core piece 43a has a width in a direction perpendicular to the extending direction in which the tooth portion 44a extends. That is, each tooth portion 44a has a Figure 9A , 9B The horizontal width of the . The width of each tooth portion 44a of the first core piece 43a is smaller than the width of each tooth portion 44b of the second core pi...

no. 3 example

[0061] Subsequently, will refer to Figure 11 , 12 A rotor core according to a third embodiment is described. Such as Figure 11 As shown, an insulating film 52 is formed on the surface of the laminated core 51 of the rotor core 50 according to the present embodiment. The laminated core 51 includes a first core sheet 53a, a second core sheet 53b, and a third core sheet (not shown) which are laminated. In this embodiment, the structure of the laminated core is basically the same as that of the second embodiment except for the shape of the burr 56a of the first core piece 53a.

[0062] Specifically, in the Figure 11 In the illustrated embodiment, the burr 56a of the tooth portion 54a of the first core sheet 53a is along the direction perpendicular to the direction of lamination of the core sheets 53a, 53b. Figure 11 in the horizontal direction. In this structure of the first core piece 53a, the burr 56a extends in the horizontal direction, and therefore, the burr 56a pro...

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Abstract

The invention relates to an armature for a rotary electric apparatus and a manufacturing method for the same. A laminated core (20) includes laminated core sheets (22a, 22b) each formed by press working. Each core sheet (22a, 22b) has a teeth portion (12) corresponding to the teeth (10). An insulating film (21) covers at least a portion of the laminated core (20) corresponding to the teeth (12). A burr (26a, 26b) caused by the press working in each core sheet is located on a side of one end of the laminated core (20) in a laminating direction of the laminated core (20). The burr (26a, 26b) of the teeth portion (44) of one of the core sheets (22a) located at the one end is folded toward the other end of the laminated core (20) in the laminating direction.

Description

technical field [0001] The present invention relates to an armature of a rotating electrical machine (or a rotating electrical machine). The invention also relates to a method of manufacturing said armature. Background technique [0002] An armature of a conventional rotating electrical machine includes a laminated core (laminated core) formed by laminating a plurality of core sheets and an insulating film covering the surface of the laminated core. In the current construction, an insulating film electrically insulates the laminated core from the windings that wrap the teeth of the armature. [0003] Figure 14 is a sectional view showing a section of a tooth of an armature 80 according to the prior art. The section is taken along the lamination direction in which the core sheets 82 of the laminated iron core 81 are laminated. Each core piece 82 is formed by press working (pressing). Such as Figure 14 As shown, the periphery of each core sheet 82 is bent back when punch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/24H02K15/02
CPCH02K3/345H02K1/24H02K15/022Y10T29/49012
Inventor 古川雄也金原良将
Owner ASMO CO LTD
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