Title:
ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2022/209762
Kind Code:
A1
Abstract:
[Problem] To provide an electric motor capable of stably dissipating heat generated from a circuit board. [Solution] The electric motor according to the one embodiment of the present invention comprises: a heat sink that covers an opening end portion of a cylindrical resin outer shell; and a circuit board disposed in an internal space covered by the resin outer shell and the heat sink. The heat sink has: a disc portion; an annular protruding portion that protrudes from the disc portion toward the circuit board side in the axial direction; and a projecting portion which is disposed on the inner diameter side of the resin outer shell relative to the annular protruding portion and which protrudes from the disc portion toward the circuit board side to come into thermal contact with the circuit board. The disc portion has an axial-direction positioning portion that abuts against the opening end portion of the resin outer shell, and the annular protruding portion has a radial-direction positioning portion that abuts against the inner peripheral surface or outer peripheral surface of the resin outer shell.
Inventors:
PATTHARAWADEE PHAOBTHONG (JP)
Application Number:
PCT/JP2022/010907
Publication Date:
October 06, 2022
Filing Date:
March 11, 2022
Export Citation:
Assignee:
FUJITSU GENERAL LTD (JP)
International Classes:
H02K9/00; H02K5/08; H02K11/33
Domestic Patent References:
| WO2020217790A1 | 2020-10-29 |
Foreign References:
| JP2009131127A | 2009-06-11 | |||
| JP2007037262A | 2007-02-08 |
Attorney, Agent or Firm:
MINAMI AOYAMA PATENT AND TRADEMARK ATTORNEYS (JP)
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