US 12,006,943 B2
Waterproof fan
Munenori Takakuwa, Tokyo (JP); and Hyukjun Kwon, Tokyo (JP)
Assigned to SANYO DENKI CO., LTD., Tokyo (JP)
Filed by SANYO DENKI CO., LTD., Tokyo (JP)
Filed on Apr. 29, 2022, as Appl. No. 17/732,604.
Claims priority of application No. 2021-082434 (JP), filed on May 14, 2021.
Prior Publication US 2022/0368188 A1, Nov. 17, 2022
Int. Cl. F04D 25/06 (2006.01); F04D 19/00 (2006.01); F04D 29/02 (2006.01); F04D 29/08 (2006.01); F04D 29/52 (2006.01); H02K 1/18 (2006.01); H02K 3/44 (2006.01); H02K 5/08 (2006.01); H02K 5/16 (2006.01); H02K 7/08 (2006.01); H02K 7/14 (2006.01); H02K 21/22 (2006.01)
CPC F04D 25/0693 (2013.01) [F04D 19/002 (2013.01); F04D 25/0613 (2013.01); F04D 25/0633 (2013.01); F04D 25/0646 (2013.01); F04D 29/023 (2013.01); F04D 29/083 (2013.01); F04D 29/522 (2013.01); H02K 1/187 (2013.01); H02K 3/44 (2013.01); H02K 5/08 (2013.01); H02K 5/163 (2013.01); H02K 7/085 (2013.01); H02K 7/14 (2013.01); H02K 21/22 (2013.01); H02K 2211/03 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A waterproof fan comprising:
a rotor including a rotating blade capable of rotating about a rotation axis;
a stator including
a plurality of stator cores extending in a radial direction relative to the rotation axis, and
a winding wound around each of the stator cores;
a frame including a housing space opening toward one side of the rotation axis;
a circuit board electrically connected to the winding and housed in the housing space;
a waterproofing resin portion covering the stator and the circuit board to block the opening of the housing space; and
a positioning member provided in the housing space and configured to position the circuit board at a position away from an inner wall of the housing space, wherein
the housing space includes a bottom surface on another side of the rotation axis,
the positioning member includes:
a base portion in contact with the bottom surface of the housing space; and
a protruding portion extending from the base portion toward the one side of the rotation axis, and
the protruding portion is in contact with the circuit board.