Title:
MOTOR
Document Type and Number:
WIPO Patent Application WO/2019/064899
Kind Code:
A1
Abstract:
Provided is a motor having: a motor body including a rotor which rotates about a center axis extending vertically and a stator which is located radially outside the rotor; a circuit board which is located at the upper side of the motor body and which extends in the direction orthogonal to the center axis; and a heat sink which is located at the lower side of the circuit board and which directly or indirectly contacts the circuit board. The circuit board includes a board body and a first heat-generating element mounted on the lower surface of the board body. The heat sink includes: a heat sink body part extending along the circuit board; a motor body housing part which houses the motor body; and an element housing part which houses the first heat-generating element. The motor body housing part and the element housing part separately extend downward from the heat sink body part, and the heat sink body part includes a rib located between the motor body housing part and the element housing part.
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Inventors:
OGAWA HIROSHI (JP)
YAMASHITA YOSHIAKI (JP)
YAMASHITA YOSHIAKI (JP)
Application Number:
PCT/JP2018/028639
Publication Date:
April 04, 2019
Filing Date:
July 31, 2018
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
H02K11/30; H02K5/22; H02K9/22
Foreign References:
| US20160254719A1 | 2016-09-01 | |||
| JP2001132697A | 2001-05-18 | |||
| JP2010034400A | 2010-02-12 | |||
| JPS5875464U | 1983-05-21 |
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