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Patent Searching and Data


Title:
ELECTRIC MOTOR AND ELECTRIC FAN
Document Type and Number:
WIPO Patent Application WO/2019/111430
Kind Code:
A1
Abstract:
Provided is an electric motor in which, as a member used for fixing a bearing for supporting the rotating shaft of a rotor, a member can be used that does not have such a restriction that the coefficient of thermal expansion thereof is the same as that of the bearing. Accordingly, the electric motor is provided with: first and second bearings (400, 500) disposed within a housing (311) and rotatably supporting the shaft (332) of a rotor (330); and a cylindrical member (600) disposed between the first and second bearings while the shaft is rotatably inserted thereinto, and fixed inside the housing. The first and second bearings are provided with first and second outer rings (410, 510), respectively, and first and second inner rings (420, 520) fixed to the shaft, respectively. The cylindrical member presses the first outer ring toward the opposite side to the second bearing along an axial direction parallel to the shaft and presses the second outer ring toward the opposite side to the first bearing along the axial direction.

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Inventors:
HAMAZAKI, Mitsumasa (Ltd. 1728-1 Omaeda, Fukaya-sh, Saitama 95, 〒3691295, JP)
TERAMOTO, Masaya (Ltd. 1728-1 Omaeda, Fukaya-sh, Saitama 95, 〒3691295, JP)
Application Number:
JP2018/018177
Publication Date:
June 13, 2019
Filing Date:
May 10, 2018
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
MITSUBISHI ELECTRIC HOME APPLIANCE CO., LTD. (1728-1, Omaeda Fukaya-sh, Saitama 95, 〒3691295, JP)
International Classes:
H02K5/173; F16C25/08; F16C35/077
Foreign References:
JP2000078815A2000-03-14
JP2001099147A2001-04-10
JP2010503371A2010-01-28
JP2010091066A2010-04-22
JP2009124900A2009-06-04
JPH032921U1991-01-11
JPH0251714U1990-04-12
JPH0847205A1996-02-16
JP2014073734A2014-04-24
JPH0579514A1993-03-30
JP2007198425A2007-08-09
US6135641A2000-10-24
Attorney, Agent or Firm:
TAKADA, Mamoru et al. (Takada, Takahashi & Partners Konwa Bldg. 7F, 12-22 Tsukiji 1-chome, Chuo-k, Tokyo 45, 〒1040045, JP)
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