ELECTRIC MOTOR

WIPO Patent Application WO/2022/209765

A1

[Problem] To provide an electric motor capable of ensuring insulation between a circuit board and a heat sink while achieving miniaturization of the motor in the axial direction. [Solution] An electric motor according to an embodiment of the present invention comprises: a heat sink that covers an opening end of a cylindrical resin outer shell; a circuit board that is disposed in an internal space covered with the resin outer shell and the heat sink; and a heat transfer member that exhibits electric insulation and that is disposed between the heat sink and the circuit board. The heat sink has: a disk that abuts against the opening end of the resin outer shell; an annular protrusion that protrudes from the disk toward the circuit board side in the axial direction; and a projection that is disposed closer to an inner-diameter side than the annular protrusion and that projects from the disk toward an electronic component. The heat transfer member has a heat transfer part held between the electronic component and the projection, and a peripheral edge part that is provided outside the heat transfer part and that is positioned outside the outer peripheral edge of the electronic component as seen from the axial direction.

IKEDA MASAHISA (JP)
SRIPONGPANKUL SOMCHAI (JP)
PATTHARAWADEE PHAOBTHONG (JP)

PCT/JP2022/010915

October 06, 2022

March 11, 2022

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FUJITSU GENERAL LTD (JP)

H02K9/00; H02K5/08; H02K11/33

WO2020217790A1

2020-10-29

JP2014232653A	2014-12-11
JP2009194327A	2009-08-27
CN203491854U	2014-03-19
JP2015079773A	2015-04-23
JP2019114610A	2019-07-11
JP2005032791A	2005-02-03
JP2012227314A	2012-11-15
JP2009065017A	2009-03-26

MINAMI AOYAMA PATENT AND TRADEMARK ATTORNEYS (JP)

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