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Rotor, rotating electrical machine, and method for producing rotor

A manufacturing method and rotor technology, applied to synchronous motors with stationary armatures and rotating magnets, manufacturing motor generators, manufacturing stator/rotor bodies, etc., can solve problems such as rotor core magnet damage

Active Publication Date: 2017-11-28
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when attempting to achieve miniaturization and high-speed rotation of the rotating electric machine, there is a problem that the stress due to the centrifugal force of the rotor core increases, and the rotor core or the magnet may be damaged.

Method used

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  • Rotor, rotating electrical machine, and method for producing rotor
  • Rotor, rotating electrical machine, and method for producing rotor
  • Rotor, rotating electrical machine, and method for producing rotor

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Experimental program
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Effect test

Embodiment approach 1

[0055] Embodiments of the invention of the present application will be described below. figure 1 It is a plan view showing the structure of the rotor according to Embodiment 1 of the present invention. figure 2 is showing figure 1 A partially enlarged top view of the structure of a 1 / 8 model of the rotor shown. image 3 is shown using figure 1 A perspective view of the structure of the rotating electrical machine with the rotor shown. Figure 4 is showing image 3 A top view of the structure of the rotating electrical machine shown. Figure 5 is for illustration figure 1 Flowchart of the manufacturing method of the rotor shown. Figure 6 to Figure 9 is showing figure 1 A partial enlarged plan view of the manufacturing process of the rotor shown.

[0056] Figure 10 It is a graph showing the torque difference between the rotor of the present invention and the rotor of the comparative example. Additionally, only in Figure 9 In , hatching for understanding the struct...

Embodiment approach 2

[0096] Figure 11 It is a plan view showing the structure of the rotor according to Embodiment 2 of the present invention. Figure 12 is showing Figure 11 A partially enlarged top view of the structure of a 1 / 8 model of the rotor shown. Figure 13 is used to illustrate the Figure 11 It is a partial enlarged plan view of the state before centrifugal force acts on the rotor core in the manufacturing process of the rotor shown. Figure 14 is used to illustrate the Figure 11 It is a partial enlarged plan view of the state after centrifugal force acts on the rotor core in the manufacturing process of the rotor shown. Additionally, only in Figure 14 In , hatching for understanding the structure is added and shown. In other figures, the same structure is used, and the hatching is omitted.

[0097] In the drawings, the same parts as those in the above-mentioned first embodiment are given the same symbols and their descriptions are omitted. In the second bridge portion 42 o...

Embodiment approach 3

[0105] Figure 15 It is a plan view showing the structure of the rotor according to Embodiment 3 of the present invention. Figure 16 is showing Figure 15 A partially enlarged top view of the structure of a 1 / 8 model of the rotor shown. Figure 17 is used to illustrate the Figure 15 It is a partial enlarged plan view of the state before centrifugal force acts on the rotor core in the manufacturing process of the rotor shown. Figure 18 is used to illustrate the Figure 15 It is a partial enlarged plan view of the state after centrifugal force acts on the rotor core in the manufacturing process of the rotor shown. Additionally, only in Figure 18 In , hatching for understanding the structure is added and shown. In other figures, the same structure is used, and the hatching is omitted.

[0106] In the drawings, the same parts as those in the above-mentioned embodiments are assigned the same symbols, and description thereof will be omitted. The first insertion hole 71 i...

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PUM

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Abstract

A rotor (3) includes a rotor core (30) in which a plurality of insertion holes (7) penetrating through in the axial direction (Y) are formed at intervals in the circumferential direction (X), and magnets (6) disposed respectively in the insertion holes (7), wherein: hole inside peripheral surfaces (81) of the insertion holes (7) and magnet inside peripheral surfaces (91) of the magnets (6) do not abut against one another; hole outside peripheral surfaces (80) of the insertion holes (7) and magnet outside peripheral surfaces (90) of the magnets (6) abut against one another in two places, namely, a first place (E) and a second place (F); adhesive layers (11, 12) are formed between the hole outside peripheral surfaces (80) of the insertion holes (7) and the magnet outside peripheral surfaces (90) of the magnets (6), i.e., between the first places (E) and the second places (F); and first projecting sections (82) that project out to the outside in the radial direction (X) and abut against the magnets (6) are formed on the hole inside peripheral surfaces (81) of the insertion holes (7).

Description

technical field [0001] The present invention relates to a rotor, a rotating electric machine, and a method for manufacturing the rotor capable of reducing positional displacement of magnets to suppress a decrease in torque, an increase in stress applied to a rotor core, and an increase in rotational pressure balance. Background technique [0002] In recent years, rotary electric machines used as electric motors or generators have been required to be smaller, rotate at a higher speed, and have higher output. As one method for realizing a small, high-speed rotation, and high-output rotating electrical machine, there is a method of effectively using the reluctance torque in the shape of a magnet embedded in the rotor, and combining it with the magnetic torque obtained by the magnet. to increase the torque generated. However, when attempting to achieve downsizing and high-speed rotation of the rotating electric machine, there is a problem that the stress due to the centrifugal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27H02K1/22H02K15/02H02K21/14
CPCH02K21/14H02K1/22H02K1/27H02K15/02H02K1/2766H02K1/28H02K15/03
Inventor 中野爱子坂上笃史井上正哉枦山盛幸立木宏纪川崎祥子
Owner MITSUBISHI ELECTRIC CORP