US 11,658,539 B2
Electric motor with circuit board being held by insulator
Yo Hirose, Nagano (JP)
Assigned to SHINANO KENSHI KABUSHIKI KAISHA, Nagano (JP)
Filed by SHINANO KENSHI KABUSHIKI KAISHA, Nagano (JP)
Filed on May 19, 2021, as Appl. No. 17/324,189.
Claims priority of application No. JP2020-119028 (JP), filed on Jul. 10, 2020.
Prior Publication US 2022/0014069 A1, Jan. 13, 2022
Int. Cl. H02K 3/32 (2006.01); H02K 5/22 (2006.01); H02K 11/33 (2016.01); H02K 5/10 (2006.01)
CPC H02K 5/10 (2013.01) [H02K 3/325 (2013.01); H02K 5/225 (2013.01); H02K 11/33 (2016.01); H02K 2211/03 (2013.01)] 3 Claims
OG exemplary drawing
 
1. An electric motor comprising:
a stator core including an annular back yoke and a plurality of pole teeth projecting in a radial direction from the back yoke at predetermined intervals, the stator core including insulators attached to the pole teeth from both sides in an axial direction, and
a circuit board including a connector mounted thereon, the circuit board being held by the insulator on a counter-output side,
wherein the insulator on the counter-output side includes a plurality of board holding claws projecting from an outer peripheral edge of the circuit board for engaging a plurality of board recesses,
the plurality of board holding claws are provided at positions of line symmetry to a connector insertion direction on the outer peripheral edge of the circuit board,
the plurality of board holding claws are arranged on the outer peripheral edge of the circuit board such that the board holding claws on a connector-mounted side are formed at an interval having a central angle θ1, and that the board holding claws on a counter-connector-mounted side are formed at an interval having a central angle θ2, 01 is smaller than θ2, and a load receiving member, which receives a radial load, projects from the circuit board at a counter-connector-mounted position, which is opposite to a connector-mounted position.