US 12,078,188 B2
Fan motor
Shinichi Katsuki, Sagamihara (JP); Naohiro Yamada, Yokohama (JP); and Takafumi Kodama, Kitasaku-gun (JP)
Assigned to MINEBEA MITSUMI Inc., Nagano (JP)
Appl. No. 17/758,735
Filed by MINEBEA MITSUMI Inc., Nagano (JP)
PCT Filed Feb. 22, 2021, PCT No. PCT/JP2021/006690
§ 371(c)(1), (2) Date Jul. 13, 2022,
PCT Pub. No. WO2021/199795, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 2020-059255 (JP), filed on Mar. 30, 2020.
Prior Publication US 2023/0039041 A1, Feb. 9, 2023
Int. Cl. H02K 11/30 (2016.01); F04D 29/52 (2006.01); H02K 5/08 (2006.01); H02K 5/15 (2006.01); H02K 5/22 (2006.01)
CPC F04D 29/52 (2013.01) [H02K 5/08 (2013.01); H02K 5/15 (2013.01); H02K 5/22 (2013.01); H02K 11/30 (2016.01)] 3 Claims
OG exemplary drawing
 
1. A fan motor comprising:
a bearing holder that is tubular and formed by insert molding with a base part that is integral with a housing and a connector housing; a stator that is mounted at an outer circumference of the bearing holder; a circuit board that is electrically connected to a coil of the stator, is mounted at a surface of the base part at an opposite side to the bearing holder, and extends from the base part to the connector housing; and a synthetic resin that seals the bearing holder, the stator, and the circuit board, except for both end faces of the bearing holder, wherein
the connector housing includes a gate opening that is injected with the synthetic resin at the time of sealing and ribs that are at an opposite side to the gate opening with the circuit board between the ribs, and tops of the ribs making contact with the circuit board.