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rotor

A rotor and rotor core technology, applied in the direction of magnetic circuit rotating parts, magnetic circuit shape/style/structure, cooling/ventilation devices, etc., can solve the problems of rotor core strength reduction and achieve the effect of suppressing strength reduction

Active Publication Date: 2022-04-12
AISIN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a problem that the strength of the rotor core decreases

Method used

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no. 1 Embodiment approach

[0023] refer to Figure 1 to Figure 6 , the structure of the rotor 100 according to the first embodiment will be described. In addition, the rotor 100 is arranged to oppose the stator 101 in the radial direction. That is, the rotating electric machine 102 is constituted by the rotor 100 and the stator 101 . Furthermore, in the rotating electric machine 102, a coil (not shown) is provided on the stator 101, and the magnetic field (magnetic flux) generated by the coil and the magnetic field (magnetic flux) generated by the rotor 100 facing the stator 101 interact with each other, thereby The rotor 100 rotates.

[0024] In addition, in the specification of this application, "rotation axis direction" refers to the rotation axis direction of the rotor 100 (along the axis C1 (refer to figure 1 ) direction). In addition, "circumferential direction" refers to the circumferential direction of the rotor 100 ( figure 2 in the direction of arrow B1 or the direction of arrow B2). "R...

no. 2 Embodiment approach

[0046] refer to Figure 8 , the structure of the rotor 200 according to the second embodiment will be described. In the second embodiment, the second portion 132 extends to the magnet insertion hole 135 .

[0047] The electromagnetic steel sheet 130 of the rotor 200 includes a magnet insertion hole 135 into which the permanent magnet 140 is inserted. Further, the second portion 132 is provided so as to extend from the shaft insertion hole 133 of the electromagnetic steel sheet 130 to the magnet insertion hole 135 as viewed from the rotation axis direction. Specifically, the second portion 132 is provided so as to extend from the notch portion 134 of the electromagnetic steel sheet 130 to the magnet insertion hole portion 135 as viewed from the rotation axis direction. In addition, a plurality of second portions 132 are provided at substantially equal angular intervals in the circumferential direction. In addition, a gap (not shown) is provided between the permanent magnet 1...

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Abstract

In the rotor of the present invention, at least a part of the plurality of electromagnetic steel sheets includes a second thickness smaller than a first portion having a first thickness in the direction of the rotation axis, and constitutes a cooling medium supplied from the cooling medium supply port of the shaft. The radially extending second portion of the flow path through which the refrigerant flows.

Description

technical field [0001] The present invention relates to rotors. Background technique [0002] Conventionally, a rotor provided with a flow path through which a cooling medium flows is known. Such a rotor is disclosed in, for example, Japanese Patent Laid-Open No. 2016-12979. [0003] The above-mentioned Japanese Patent Laid-Open No. 2016-12979 discloses a rotor including a rotor core, permanent magnets embedded in the rotor core, and a rotating shaft. In this rotor, an in-shaft refrigerant passage through which a cooling refrigerant flows is provided inside the rotating shaft. In addition, the rotor core is provided with an in-core refrigerant passage through which the refrigerant supplied from the in-axis refrigerant passage of the rotating shaft flows. The in-core coolant passage of the rotor core is provided so as to extend in the radial direction from the inner diameter side to the outer diameter side end of the rotor core. [0004] The rotor core is formed of a plur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K9/19H02K1/32
CPCH02K1/32H02K9/19H02K1/20H02K1/27H02K1/2766H02K1/276
Inventor 池本正幸小牧武史宫路刚竹内孝昌津田哲平
Owner AISIN CORP