Electric Motor

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.

Patent Information

Application #

Filing Date

31 August 2023

Publication Number

49/2023

Publication Type

INA

Invention Field

ELECTRICAL

Status

Email

Parent Application

Applicants

FUJITSU GENERAL LIMITED

3-3-17, Suenaga, Takatsu-ku, Kawasaki-shi, Kanagawa 2138502

Inventors

1. PHAOBTHONG, Pattharawadee

c/o FUJITSU GENERAL LIMITED, 3-3-17, Suenaga, Takatsu-ku, Kawasaki-shi, Kanagawa 2138502

Specification

Documents

Application Documents

#	Name	Date
1	202317058489-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [31-08-2023(online)].pdf	2023-08-31
2	202317058489-STATEMENT OF UNDERTAKING (FORM 3) [31-08-2023(online)].pdf	2023-08-31
3	202317058489-REQUEST FOR EXAMINATION (FORM-18) [31-08-2023(online)].pdf	2023-08-31
4	202317058489-PROOF OF RIGHT [31-08-2023(online)].pdf	2023-08-31
5	202317058489-PRIORITY DOCUMENTS [31-08-2023(online)].pdf	2023-08-31
6	202317058489-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [31-08-2023(online)].pdf	2023-08-31
7	202317058489-FORM 18 [31-08-2023(online)].pdf	2023-08-31
8	202317058489-FORM 1 [31-08-2023(online)].pdf	2023-08-31
9	202317058489-DRAWINGS [31-08-2023(online)].pdf	2023-08-31
10	202317058489-DECLARATION OF INVENTORSHIP (FORM 5) [31-08-2023(online)].pdf	2023-08-31
11	202317058489-COMPLETE SPECIFICATION [31-08-2023(online)].pdf	2023-08-31
12	202317058489-FORM-26 [02-09-2023(online)].pdf	2023-09-02
13	202317058489-GPA-050923.pdf	2023-10-13
14	202317058489-Correspondence-050923.pdf	2023-10-13
15	202317058489-FORM 3 [15-02-2024(online)].pdf	2024-02-15
16	202317058489-FER.pdf	2025-09-23

Search Strategy

1	202317058489_SearchStrategyNew_E_SearchHistoryE_12-09-2025.pdf