Title:
ROTARY ELECTRIC MACHINE, ROTARY ELECTRIC MACHINE DRIVE SYSTEM HAVING THE SAME, AND RAILWAY VEHICLE
Document Type and Number:
Japanese Patent JP2019075921
Kind Code:
A
Abstract:
To provide a rotary electric machine capable of reducing noises of a cooling fan due to magnetic force imbalance.SOLUTION: The rotary electric machine comprises: multiple bearings 210a and 210b mounted on a shaft 103; a cooling fan 200 rotatably supported by the multiple bearings 210a and 210b; a magnetic force generation unit 220 disposed between the multiple bearings 210a and 210b; and a movement regulation part having multiple support members 300a and 300b which are disposed between each of the multiple bearings 210a and 210b and the cooling fan 200, and regulating movements in an axial direction and a radial direction with respect to the bearing 210b at the support member 300b in the multiple support members 300a and 300b and a part of the cooling fan 200. Between the support member 300a in the multiple support members 300a and 300b and a part of the cooling fan 200, a gap 130 or an elastic body 150 is disposed and the support member 300a and the support member 300b are fixed together with a spacer 140 therebetween.SELECTED DRAWING: Figure 1
Inventors:
ITO MAKOTO
TAKAHASHI AKIFUMI
SUGIMOTO SHINJI
TAMURA TATSUHIRO
SHIBA YUKI
TAKAHASHI AKIFUMI
SUGIMOTO SHINJI
TAMURA TATSUHIRO
SHIBA YUKI
Application Number:
JP2017201632A
Publication Date:
May 16, 2019
Filing Date:
October 18, 2017
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H02K5/24; H02K9/06; H02K9/26
Domestic Patent References:
| JP4731792B2 | 2011-07-27 | |||
| JP2013211949A | 2013-10-10 | |||
| JP2008306922A | 2008-12-18 | |||
| JP2016201902A | 2016-12-01 |
Foreign References:
| EP1109297A2 | 2001-06-20 |
Attorney, Agent or Firm:
Polaire Patent Business Corporation