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Armature for rotary motor

A technology for rotating electrical machines and armatures, applied in the field of armatures of rotating electrical machines, can solve problems such as poor productivity, armature deformation, and high-priced laser welding equipment, and achieve the effect of reducing the number of processes and improving production efficiency.

Inactive Publication Date: 2004-10-06
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] As described above, in the past, for example, because of high-density coils, etc., for the armature of a rotating electric machine that is completed by combining a plurality of magnetic pole teeth produced separately, laser welding (Patent Document 1) or riveting (Patent Document 1) is required for each magnetic pole tooth. Patent Document 2) The connecting and fixing work is performed, that is, only the number of magnetic pole teeth requires a special connecting and fixing work that takes man-hours, and there is a problem of poor productivity.
[0007] In addition, in the case of Patent Document 1, expensive laser welding equipment is required, and at the same time, the armature is deformed by the welding, which is also a factor that deteriorates the characteristics of the rotating electrical machine such as cogging and torque ripple.
[0008] In addition, in the case of Patent Document 2, a dedicated caulking device is required, and at the same time, the caulking causes deformation of the armature, which is also a factor that deteriorates the characteristics of the rotating electrical machine such as cogging and torque ripple.

Method used

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  • Armature for rotary motor
  • Armature for rotary motor
  • Armature for rotary motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0050] figure 1 It is a plan view showing the armature of the rotating electrical machine in Embodiment 1 of the present invention. Here, an example of an armature 100 of a rotating electrical machine that functions as a stator disposed with a predetermined gap with respect to a rotor 200 integrally formed with a rotating shaft 201 will be described. In addition, on the contrary, when functioning as a rotor integrally formed with the rotating shaft, the present invention can be applied in the same manner.

[0051] Such as figure 1 As shown, the armature 100 has a plurality of first magnetic pole teeth 1, second magnetic pole teeth 2 and drive coils 3, the second magnetic pole teeth 2 connect the first magnetic pole teeth 1 on both sides of the second magnetic pole teeth 2, and the plurality of first magnetic pole teeth The first magnetic pole teeth 1 are arranged sequentially in the circumferential direction of the rotating electrical machine; the second magnetic pole teeth ...

Embodiment approach 2

[0063] Figure 6 is a diagram showing the main parts of the armature of the rotating electric machine in Embodiment 2 of the present invention, which is different from that in Embodiment 1 described above. Figure 5 Corresponding.

[0064] Here, the convex engaging piece 14 formed at the end of the yoke portion 11 of the first magnetic pole tooth 1 does not extend along the entire dimension L in the axial direction of the first magnetic pole tooth 1 , but extends over the entire length A part L1 of L, therefore, the engaging portion 16 is not provided over the entire length of the axial dimension L of the first magnetic pole tooth 1, but is provided only along the length of a part L1. Moreover, the joint part 21 formed in the concave tongue-and-groove shape of the 2nd magnetic pole tooth 2 is provided over the whole length L.

[0065] As described above, since the engaging portion 16 is formed to be shorter than the axial dimension L, when the second magnetic pole tooth 2 is...

Embodiment approach 3

[0067] Figure 7 is a plan view showing an armature of a rotating electric machine in Embodiment 3 of the present invention, Figure 8 yes means Figure 7 A top view of the configuration of the first magnetic pole teeth 1, Figure 9 yes means Figure 7 The top view of the second magnetic pole tooth 2. Hereinafter, description will be given centering on differences from Embodiment 1 described above.

[0068] here, as Figure 8 As shown, on the end surface 13 of the yoke portion 11 of the first magnetic pole tooth 1, a concave engaging piece portion 17 is formed at the lower corner thereof, and the first magnetic pole teeth 1 adjacent in the circumferential direction are formed on the end surface 13 of the first magnetic pole tooth 1. When contacting upwards, since the engaging pieces 17 of the two are in contact, a concave tongue-and-groove engaging portion 18 is formed. In this case, since the engaging piece 17 is formed in a concave shape and there is no protruding piec...

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Abstract

An armature of a rotating electric machine has a plurality of first magnetic teeth arranged side by side along a circumferential direction of the rotating electric machine and a plurality of second magnetic teeth joined to the first magnetic teeth. A pair of joint portions is formed at both end surfaces of a yoke portion of each first magnetic tooth, the joint portions formed at the facing end surfaces of the yoke portions of each successive pair of adjacent first magnetic teeth together forming a connecting part, whereas a mating part is formed at an outer end surface of each second magnetic tooth. Each second magnetic tooth is inserted between the adjacent first magnetic teeth along an axial direction of the rotating electric machine with the mating part fitted on the connecting part to interconnect the adjacent first magnetic teeth.

Description

technical field [0001] The present invention relates to an armature of a rotating electric machine, and is particularly intended to improve the production efficiency of an armature of a type completed by combining iron cores divided in the circumferential direction. Background technique [0002] Conventionally, the structure of the stator is known as an armature with increased coil density by winding coils on a laminated core divided in the circumferential direction for the purpose of downsizing and increasing the output of a rotating electric machine. For example, as disclosed in Patent Document 1, coils are respectively wound on magnetic pole teeth divided in the circumferential direction in units of pole teeth, and concave and convex portions provided on the ends of each magnetic pole tooth are fitted to form a cylindrical shape. Afterwards, the ends of the magnetic pole teeth are laser welded in the stacking direction, and each magnetic pole tooth is connected and fixed....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/18H02K1/14H02K15/02H02K29/03
CPCH02K1/148H02K29/03
Inventor 桥本昭木村康树山代谕中原裕治仲兴起照山英俊小林学
Owner MITSUBISHI ELECTRIC CORP