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Unit core of rotating electrical machine

A technology of rotating electrical machine and iron core, applied in the field of unit iron core, can solve the problem of high manufacturing cost and achieve the effect of reducing manufacturing cost

Inactive Publication Date: 2013-10-30
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the above-mentioned conventional unit core structure, when manufacturing a rotating electrical machine with a different core diameter, it is necessary to recreate the mold, which has a problem of high manufacturing cost.

Method used

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  • Unit core of rotating electrical machine
  • Unit core of rotating electrical machine
  • Unit core of rotating electrical machine

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Experimental program
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Embodiment approach 1

[0031] figure 1 It is a figure which shows the tooth core of the rotating electrical machine of this Embodiment 1. figure 2 It is a figure which shows the unit core which connected the several tooth core. image 3 is included figure 2 Assembly diagram of the stator with a tooth core. The unit core 1 of the electric rotating machine has a plurality of tooth cores 11 connected in a bendable manner. The unit core 1 constitutes a stator of a rotating electrical machine by using one or more of the unit cores 1 .

[0032] The tooth core 11 has a base portion 13 and a tooth portion 15 , respectively. In the present embodiment, all of the plurality of tooth cores 11 constituting the unit core 1 are integrated.

[0033] Each tooth portion 15 extends from the inner side in the stator radial direction in the corresponding base portion 13 . Each tooth core 11 has a core back 17 located on the opposite side of the base portion 13 from the tooth portion 15 . The respective core bac...

Embodiment approach 2

[0045] The unit core of the second embodiment differs from the above-mentioned first embodiment in that the plurality of tooth cores are not integrated but connected by joints, and other parts are the same as those of the first embodiment. Figure 10 and Figure 11 All are diagrams showing core sheets constituting a unit core by stacking in accordance with Embodiment 2. More specifically, Figure 10 Shows the arrangement pattern where the combined portion between the tooth cores points in one direction, Figure 11 It shows an arrangement pattern in which the combined parts between the tooth cores point in opposite directions. in addition, Figure 12 It is a figure which shows the vicinity of the connection part of adjacent tooth cores.

[0046] Each core back portion 17 of each tooth core 51 of the unit core 5 in the second embodiment also includes one first arc portion 1a with a curvature radius R1 and two second arc portions 1b with a curvature radius R2. Die cut in laye...

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Abstract

Provided is a rotating electrical machine, wherein a die need not be newly built upon manufacturing a rotating electrical machine with a different diameter, and hence, manufacturing cost thereof is inexpensive. Unit cores (1) of the rotating electrical machine are provided with a plurality of teeth cores (11) connected in bendable state. A core-back section (17) of each of the teeth cores has a plurality of curvatures.

Description

technical field [0001] The present invention relates to a unit core of a rotating electric machine. Background technique [0002] As a conventional stator core structure of a rotating electric machine including a split core, there are structures disclosed in Patent Document 1 (Japanese Patent No. 3017085 ) and Patent Document 2 (Japanese Patent No. 3379461 ), for example. In the techniques disclosed in these patent documents, the unit core is taken out from the mold in a state where a plurality of tooth cores are integrally connected. Next, the windings are intensively wound on each tooth in a state where a plurality of tooth cores are connected in a straight line or in a state where they are bent in an anti-arc shape, and then the unit core is rounded, and the unit core is shrink-fitted. The core is fixed to the frame. [0003] However, in the above-mentioned conventional unit core structure, when manufacturing a rotating electric machine having a different core diameter,...

Claims

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Application Information

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IPC IPC(8): H02K1/18
CPCH02K1/148H02K2201/15H02K1/18H02K15/02
Inventor 木村康树山代谕小寺秀明秋田裕之
Owner MITSUBISHI ELECTRIC CORP
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