Rotary electric machine laminated core

A technology for a rotating electrical machine and an iron core, which is applied in the structural field of a laminated iron core, can solve the problems of reduced efficiency of the rotating electrical machine, increased torque ripple, and reduced shape accuracy, and achieves the effects of improving characteristics, reducing machining deformation, and improving productivity.

Active Publication Date: 2012-12-12
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In the above-mentioned conventional laminated iron core, since the mating and abutting portions of the core pieces are formed by notch bending, there is a problem that deformation occurs at a position corresponding

Method used

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  • Rotary electric machine laminated core
  • Rotary electric machine laminated core
  • Rotary electric machine laminated core

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Embodiment 1

[0033] figure 1 It is a plan view showing the rotating electrical machine according to Embodiment 1 of the present invention. In the figure, a cylindrical stator 2 is held in a cylindrical casing 1 . The stator 2 includes a laminated core 3 , a drive coil 4 wound around the laminated core 3 , and an insulator 5 interposed between the laminated core 3 and the drive coil 4 .

[0034] A rotor 6 is arranged in the stator 2 . The rotor 6 is held by the casing 1 so as to be rotatable relative to the stator 2 . The rotor 6 has a plurality of permanent magnets 7 fixed to the outer peripheral portion thereof and facing the stator 2 .

[0035] figure 2 is shown figure 1 The top view of the laminated core 3, image 3 is shown figure 1 The three-dimensional view of the laminated core 3, Figure 4 is shown figure 1 The top view of the state of the laminated core 3 in the middle of assembly. like Figure 4 As shown, the laminated core 3 is constituted b...

Example Embodiment

[0049] Embodiment 2

[0050] Next, Figure 10 It is a plan view showing an important part of the laminated core of the rotary electric machine according to the second embodiment of the present invention, which is the same as that of the first embodiment. Figure 9 corresponding figure. In addition, the same code|symbol is attached to the part which is the same as or equivalent to Embodiment 1, and description is abbreviate|omitted.

[0051] In the figure, a flat portion 13h orthogonal to the magnetic pole tooth portion 13b is provided on the outer peripheral surface of the back yoke portion 13a on the radially outer side of the rotating electrical machine. The flat portion 13h of each core piece 13 is provided in a state in which the split laminated core 11 is linearly developed so that the magnetic pole tooth portions 13b are parallel, that is, in the press working state of the split laminated core 11 in the first embodiment. The flat portions 13h are located on the same s...

Example Embodiment

[0053] Embodiment 3

[0054] Next, Figure 11 It is a plan view showing an important part of a laminated core of a rotary electric machine according to Embodiment 3 of the present invention, Figure 12 is to show that Figure 11 The plan view of the state in which the split laminated core 11 is unfolded in a straight line, Figure 11 and Figure 12 are the same as those of Embodiment 1, respectively. Figure 5 and Figure 9 corresponding figure. In addition, the same code|symbol is attached to the part which is the same as or equivalent to Embodiment 1, 2, and description is abbreviate|omitted.

[0055] In the figure, a holding protrusion 13i is provided at the second end of the back yoke 13a, and the holding protrusion 13i comes into contact with the protrusion 13c when the core block 12 is closed in an annular or arc shape. The holding protrusion portion 13i is provided at the outer peripheral side end portion of the cutout portion 13g. In addition, when the split la...

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PUM

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Abstract

In a rotary electric machine laminated core, a rotating shaft portion is disposed closer to an outer circumferential surface than an inner circumferential surface of a back yoke portion. A notch portion is disposed on at least one of first and second end portions of the back yoke portion so as to form a gap between a vicinity of the rotating shaft portion of a projecting portion and a recess portion when core segments are arranged in an annular shape or a circular arc shape. The first end portion and the second end portion of the back yoke portion are configured such that a predetermined gap that connects from the outer circumferential side to the inner circumferential side is formed between adjacent projecting portions and recess portions when the core segments are expanded rectilinearly such that magnetic pole tooth portions are parallel to each other.

Description

technical field [0001] The present invention relates to a structure of a laminated core of a rotating electrical machine, and more particularly to improvement of the characteristics and productivity of a laminated core having a structure in which plate-shaped core pieces are laminated and integrated while end portions are connected to each other. Background technique [0002] A conventional laminated core of a rotating electric machine is configured by connecting a plurality of core blocks formed by laminating a plurality of core pieces in the circumferential direction. In addition, when manufacturing such a laminated core, a plurality of first core members and a plurality of second core members are alternately laminated. Each first core member is formed by connecting a plurality of core pieces in a row. In addition, each second core member is configured by connecting a plurality of core pieces opposite to the core pieces of the first core member in a row. [0003] Each co...

Claims

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Application Information

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IPC IPC(8): H02K1/18
CPCH02K1/148H02K1/18
Inventor 桥本昭中原裕治秋田裕之市川崇敬
Owner MITSUBISHI ELECTRIC CORP
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