US 11,837,935 B2
Canned brushless motor
Dustin Jefferies, Baltimore, MD (US); David J. Smith, Columbia, MD (US); Marcus E. E. Rydin, Baltimore, MD (US); Justin H. Ayers, Jarrettsville, MD (US); and Sumiteru Mori, Baltimore, MD (US)
Assigned to BLACK & DECKER, INC., New Britain, CT (US)
Filed by Black & Decker Inc., New Britain, CT (US)
Filed on Feb. 1, 2022, as Appl. No. 17/590,014.
Claims priority of provisional application 63/266,197, filed on Dec. 30, 2021.
Claims priority of provisional application 63/144,802, filed on Feb. 2, 2021.
Prior Publication US 2022/0247258 A1, Aug. 4, 2022
Int. Cl. H02K 5/15 (2006.01); H02K 3/52 (2006.01); H02K 7/14 (2006.01); H02K 21/16 (2006.01); H02K 11/215 (2016.01); F16C 17/02 (2006.01); H02K 5/173 (2006.01); H02K 11/33 (2016.01); H02K 11/38 (2016.01); H02K 1/2706 (2022.01); F16C 35/06 (2006.01); H02K 5/06 (2006.01); H02K 7/08 (2006.01); B25F 5/02 (2006.01)
CPC H02K 3/522 (2013.01) [F16C 17/02 (2013.01); F16C 35/06 (2013.01); H02K 1/2706 (2013.01); H02K 5/06 (2013.01); H02K 5/1732 (2013.01); H02K 7/083 (2013.01); H02K 7/145 (2013.01); H02K 11/215 (2016.01); H02K 11/33 (2016.01); H02K 11/38 (2016.01); H02K 21/16 (2013.01); B25F 5/02 (2013.01); F16C 2380/26 (2013.01); H02K 2203/03 (2013.01); H02K 2211/03 (2013.01); H02K 2213/03 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A motor comprising:
a motor housing having a substantially cylindrical body and at least one open end;
a stator disposed within the motor housing, the stator including a stator core and a plurality of stator windings;
a rotor rotatably received within the stator and including a rotor shaft extending along a longitudinal axis and a plurality of permanent magnets;
a bearing bridge mounted on the open end of the motor housing and including a main body forming a center pocket arranged to support a bearing of the rotor shaft, an outer ring configured to be fittingly received through the open end of the motor housing, and at least one fastening receptacle formed radially through the outer ring; and
a first end insulator located on one end of the stator core and a second end insulator located on another end of the stator core, the first and second end insulators being configured to electrically insulate the stator core from the plurality of stator windings, wherein the first end insulator is located proximate the bearing bridge,
wherein the motor housing includes a first side opening through which a first fastener is radially fastened into the at least one fastening receptable to secure the bearing bridge to the motor housing, and
wherein the second end insulator includes at least one fastening receptacle and the motor can includes a second side opening through which a second fastener is radially fastened into the at least one fastening receptable of the second end insulator to secure the second end insulator to the motor housing.