Patent Number: 6,798,091

Title: Watertight brushless fan motor

Abstract: In a watertight brushless fan motor of the present invention, a first pad 33 is disposed in a first space between a stator 1 and a circuit substrate 3, A second pad 35 is disposed in a second space between the circuit substrate 3 and a plate-like section 7c of a case 7. Spaces between the plate-like section 7c of the case 7 and a bearing supporting cylindrical section 7a are formed with an insulating resin in such a manner that the stator 1 and the circuit substrate 3 are included inside, thereby forming a molded part 31, With this arrangement, the watertight brushless fan motor is provided that can prevent occurrence of a crack in the outer surface of the molded part due to the so-called molding shrinkage of the insulating resin or expansion and shrinkage of the insulating resin caused by a change in ambient temperature.

Inventors: Kudou; Naruhiko (Nagano, JP), Takizawa; Hisashi (Nagano, JP), Kawakami; Osamu (Nagano, JP)

Assignee: Sanyo Denki Co., Ltd.

International Classification: H02K 5/08 (20060101); H02K 5/10 (20060101); H02K 15/10 (20060101); H02K 15/00 (20060101); H02K 29/00 (20060101); H02K 001/04 ()

Expiration Date: 09/28/2012