Rotating electrical machine

A technology of rotating electrical machines and conductive components, applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve the problems of difficulty in embedding conductive components, short fitting parts, poor productivity, etc., and achieve assembly and insulation Effect

Pending Publication Date: 2021-03-23
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the conventional coil connected body, the conductive member temporarily inserted into the groove is lifted due to the impact during transportation or the external load during assembly, etc., which becomes a productivity problem in the subsequent process of connecting the conductive member to the end of the coil. Causes such as deterioration and a decrease in the insulation between conductive members
In particular, there is a technical problem that the fitting portion between the conductive member having a small circumferential length of the arc portion and the cage is short and easily falls off.
[0003] On the other hand, if the dimensional tolerances between the groove and the conductive member are strictly set to prevent the conductive member from falling out, if the conductive member or the groove deforms, it will be difficult to insert the conductive member, and there is a technical problem that the assemblability will be reduced.

Method used

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  • Rotating electrical machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0028] Hereinafter, the rotary electric machine of the first embodiment will be described based on the drawings. figure 1 It is a cross-sectional view showing the rotary electric machine of the first embodiment, figure 2 It is a top plan view showing a coil connecting body of a rotary electric machine according to the first embodiment, image 3 Yes figure 2 A cross-sectional view of the part represented by A-a. In addition, Figure 4 It is a partial cross-sectional view showing the holder of the coil connectors of the first embodiment. In each figure, for the same, a substantial part is labeled the same symbol. Further, in the figure, the arrow z represents the axial direction of the rotating electric machine, and the arrow R represents the radial direction of the rotary electric machine.

[0029] The rotary electric machine 100 of Embodiment 1 can be used in electric power steering drive motors, etc. figure 1 As shown, the stator 2 is applied in the inner circumference of the...

Embodiment approach 2

[0046] In Embodiment 2, a modification of the holder or terminal of the coil connector will be described. Figure 5 to 7 It is a partial cross-sectional view showing the coil connectors of the second embodiment. Figure 5 to 7 The retainer 7a, 7b, 7b, 7b, 7 have three slots 8 in the heart-shaped, since the cross-sectional shape of the respective grooves 8 is the same, and therefore, a part of the accompanying drawings are omitted. Further, since the overall structure of the rotary electric motor of the second embodiment is the same as the above-described first embodiment, the description thereof will be omitted herein.

[0047] Figure 5 The retaining frame 7a shown has an inclined portion 85c at the extension portion 85 provided in one side wall 83, which is used to enlarge the width size W2 of the groove opening portion 81. Further, another side wall 84 has an inclined portion 84a, which is used to enlarge the width dimension W2 of the groove opening portion 81. According to th...

Embodiment approach 3

[0052] In the third embodiment, the arrangement examples of the holder of the coil connector and the arrangement example of the positioning protrusion will be described. Figure 8 to 10 It is a plan view showing a configuration example of the extension portion and the positioning protrusion portion of the coil connecting body of the third embodiment. In addition, in Figure 9 with Figure 10 In the inner circumferential groove 8, the extension portion 85 and the positioning protrusion 86 are shown, but the other grooves 8 are also the same. Further, since the overall structure of the rotary electric machine of the third embodiment is the same as that of the first embodiment, the description thereof will be omitted herein.

[0053] in Figure 8 In the configuration example shown, the extending portion 85 and the positioning protrusion portion 86 are set through the entire circumference of the groove 8. The holder 7 composed in this manner can reliably suppress floating from the term...

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PUM

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Abstract

A rotating electrical machine (100) is provided with a ring-shaped coil connector (6) that is disposed coaxially with a stator (2). The coil connector (6) has, inside of each of multiple grooves (8) provided in a holder (7), a protruding section (85) that restricts movement of a terminal (9) in the axial direction, and a positioning projection (86) that restricts movement in the radial direction.The positioning projection (86) positions the terminal (9) such that a portion of the terminal (9) overlaps the protruding section (85) in the axial direction. According to this configuration, when the terminal (9) moves in the direction from a terminal retainer (87) to a groove opening (81), the terminal abuts a side surface (85b) of the protruding section (85), thereby preventing rising and escape of the terminal (9).

Description

Technical field [0001] The present application relates to a rotating electric machine including a coil connector. Background technique [0002] As a coil connector of the rotating electric machine, a coil connector disposed with an arc-shaped conductive member is disposed in a plurality of grooves disposed as a resin as a resin-made insulating member. The conductive member disposed at a predetermined position of the groove of the holder is connected to the end of the coil wound on the extreme tooth of the stator, and completes the prescribed wiring. In the conventional coil connector, the conductive member temporarily inserted into the groove floats due to the external load at the time of handling or the outer load or the like, which is a subsequent process of the conductive member and the end of the coil. The cause of deterioration and the decrease in insulation of the conductive member. In particular, the chimetric portion between the length of the conductive member and the hol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/50
CPCH02K2203/09H02K3/522H02K2213/03H02K3/325H02K3/50H02K5/225H02K3/52
Inventor 山本孝君岛启松永俊宏藤本宪悟
Owner MITSUBISHI ELECTRIC CORP
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