US 12,463,502 B2
Outer-rotor motor assembly
Tong Zheng, Suzhou (CN); Yuming Zhou, Yangzhou (CN); Weifeng Qian, Suzhou (CN); and Pengcheng Shen, Suzhou (CN)
Assigned to BLACK & DECKER INC., New Britain, CT (US)
Filed by Black & Decker Inc., New Britain, CT (US)
Filed on Dec. 7, 2022, as Appl. No. 18/076,691.
Application 18/076,691 is a continuation of application No. 18/075,964, filed on Dec. 6, 2022.
Claims priority of provisional application 63/265,247, filed on Dec. 10, 2021.
Prior Publication US 2023/0188021 A1, Jun. 15, 2023
Int. Cl. H02K 5/15 (2006.01); B25F 5/00 (2006.01); H02K 5/173 (2006.01); H02K 7/08 (2006.01); H02K 7/116 (2006.01); H02K 7/14 (2006.01); H02K 9/06 (2006.01); H02K 21/22 (2006.01); B25B 21/02 (2006.01); H02K 11/215 (2016.01)
CPC H02K 7/145 (2013.01) [B25F 5/001 (2013.01); H02K 5/15 (2013.01); H02K 5/1735 (2013.01); H02K 7/085 (2013.01); H02K 7/116 (2013.01); H02K 9/06 (2013.01); H02K 21/22 (2013.01); B25B 21/02 (2013.01); H02K 11/215 (2016.01); H02K 2211/03 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A brushless direct-current (BLDC) motor comprising:
a rotor comprising a rotor core, a plurality of permanent magnets secured to the rotor core, and a rotor shaft;
a stator including a stator core having an inner annular body though which the rotor shaft extends and a plurality of stator teeth extending radially outwardly from the inner annular body, a plurality of stator windings wound around the plurality of stator teeth, an insulating body electrically insulating the plurality of stator windings from the stator core, and a plurality of stator terminals mounted to the insulating body and electrically coupled to the plurality of stator windings; and
a positional sensor board mounted to the insulating body and including at least one positional sensor mounted on a first surface thereof configured to magnetically sense the plurality of permanent magnets,
wherein the positional sensor board is C-shaped including two ends defining a circumferential gap in between, and the plurality of stator terminals is located within the circumferential gap so as to intersect a plane formed by a second surface of the positional sensor board, and
wherein the insulating body includes a plurality of insulating teeth that cover the plurality of stator teeth, a first plurality of axial posts extending adjacent circumferential ends of a first subset of the plurality of insulating teeth to support the position sensor board, and a second plurality of axial posts extending adjacent circumferential ends of a second subset of the plurality of insulating teeth to support the plurality of stator terminals, wherein the second plurality of axial posts includes three adjacent insulating teeth.