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Outer rotor type rotating electrical machines

A technology of rotating electric machines and external rotors, applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve the problems of reducing gaps and affecting the characteristics of motors, and achieve the effect of improving fluctuations and suppressing fluctuations

Active Publication Date: 2021-03-12
HITACHI IND EQUIP SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, the gap between the stator core and the rotor core is reduced, potentially affecting the characteristics of the motor

Method used

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  • Outer rotor type rotating electrical machines
  • Outer rotor type rotating electrical machines
  • Outer rotor type rotating electrical machines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] use Figure 1 to Figure 4 One embodiment of the present invention will be described.

[0029] figure 1 is a radial sectional view showing the structure of the outer rotor type motor of this embodiment,

[0030] figure 2 yes figure 1 Axial sectional view of middle section II-II. image 3 It is a figure which shows the structure of the stator core which concerns on this embodiment viewed from radially inner side. Figure 4 It is a figure which shows the structure of the rotor core which concerns on this embodiment from the radial direction outer side.

[0031] The outer rotor type motor of this embodiment includes a stator 10 having a stator core 11 and a rotor 20 having a rotor core 21 arranged on the outer peripheral side of the stator core 11 .

[0032] The stator 10 has a stator frame 12, a stator core 11 supported by a cantilever on the stator frame 12, and a plurality of (48 in this embodiment) teeth portions 13 wound on the outer peripheral side of the stato...

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PUM

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Abstract

The present invention provides an outer rotor type rotating electrical machine capable of enhancing the effect of suppressing variation of a divided rotor core, characterized by comprising: a stator (10) having a stator core (11); and a rotor (20), It has a rotor base (22), a rotor core (21) cantilevered on the rotor base (22) and arranged on the outer peripheral side of the stator core (11), and a rotor fixed on the inner peripheral side of the rotor core (21). A plurality of permanent magnets (23). The rotor core (21) is composed of a plurality of rotor core blocks (25) which are divided in the circumferential direction and the axial direction, and arranged so that the circumferential division positions are not adjacent to each other in the axial direction. The rotor (20) has a gap (27) between adjacent rotor core blocks (25) in the circumferential direction and a part of other rotor core blocks (25) at the same circumferential position as the gap (27) in the axial direction. Welding portion (28) that is continuously welded on.

Description

technical field [0001] The present invention relates to a rotating electrical machine such as a motor and a generator, and particularly to an outer rotor type rotating electrical machine having a stator core and a rotor core disposed on the outer peripheral side thereof. Background technique [0002] Patent Document 1 discloses an outer rotor type motor including a stator having a stator core, and a rotor having a rotor core disposed on the outer peripheral side of the stator core. The rotor has a rotor base, a rotor core supported by a cantilever on the rotor base, and a plurality of permanent magnets fixed to the inner peripheral side of the rotor core. [0003] The outer rotor type motor described above is very efficient when thinning (downsizing in the axial direction) is required, as in the case of elevator traction machines and the like. In addition, since the stator core having a larger volume is on the inside and the rotor core having a smaller volume is on the outs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27H02K1/28
CPCH02K1/2786H02K1/28
Inventor 税所亮平矢岛健司三好努
Owner HITACHI IND EQUIP SYST CO LTD