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Title:
MOTOR AND PUMP DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/150966
Kind Code:
A1
Abstract:
Provided is a motor in which heat generated at a coil can be inhibited from being transmitted to a bearing support portion of a resin sealing member holding a bearing member. A motor 2 comprises: a rotor 10 including a rotation shaft 5 and a magnet 20; a first bearing member 15 supporting the rotation shaft 5; a stator 11 including a plurality of coils 53 arranged on the outer circumferential side of the rotor 10; and a resin sealing member 13 covering the coils 53. The sealing member bottom 65 of the resin sealing member 13 includes a tubular bearing support portion 75 which surrounds the first bearing member 15 from the radially outer circumferential side, a coil sealing portion 76 covering the lower sides of the coils, and a connection portion 77 disposed therebetween. Since the thickness A of the connection portion 77 is smaller than the thickness B of the bearing support portion 75 or the thickness C of the coil sealing portion 76, heat from the coils 53 is less likely to be transmitted to the bearing support portion 75.

Inventors:
KOKUBO Nobuki (5329 Shimosuwa-machi, Suwa-gu, Nagano 11, 〒3938511, JP)
YAMAMOTO Takashi (5329 Shimosuwa-machi, Suwa-gu, Nagano 11, 〒3938511, JP)
KURATANI Hiroki (5329 Shimosuwa-machi, Suwa-gu, Nagano 11, 〒3938511, JP)
HARADA Masaki (5329 Shimosuwa-machi, Suwa-gu, Nagano 11, 〒3938511, JP)
Application Number:
JP2018/004139
Publication Date:
August 23, 2018
Filing Date:
February 07, 2018
Export Citation:
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Assignee:
NIDEC SANKYO CORPORATION (5329, Shimosuwa-machi Suwa-gu, Nagano 11, 〒3938511, JP)
International Classes:
H02K5/08; F04D13/06; F04D29/00; F04D29/58; H02K7/14
Foreign References:
JP2009278821A2009-11-26
JP2010183779A2010-08-19
JP2006158191A2006-06-15
JPH08223866A1996-08-30
JP2007252121A2007-09-27
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