US 11,811,287 B2
Brushless motor for a power tool
Matthew R. Bailey, Racine, WI (US); Keith M. Klosterman, Gurnee, IL (US); Keith Boulanger, Kenosha, WI (US); Jeffrey C. Hessenberger, Neosho, WI (US); Andrew T. Beyerl, Pewaukee, WI (US); and Gerald A. Zucca, Milwaukee, WI (US)
Assigned to Milwaukee Electric Tool Corporation, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Jun. 4, 2021, as Appl. No. 17/338,791.
Claims priority of provisional application 63/050,166, filed on Jul. 10, 2020.
Claims priority of provisional application 63/036,035, filed on Jun. 8, 2020.
Claims priority of provisional application 63/035,273, filed on Jun. 5, 2020.
Prior Publication US 2021/0384793 A1, Dec. 9, 2021
Int. Cl. H02K 3/52 (2006.01); H02K 7/08 (2006.01); H02K 7/14 (2006.01); H02K 11/00 (2016.01); H02K 21/16 (2006.01); H02K 11/215 (2016.01); B25D 11/06 (2006.01)
CPC H02K 3/522 (2013.01) [H02K 7/083 (2013.01); H02K 7/145 (2013.01); H02K 11/0094 (2013.01); H02K 11/215 (2016.01); H02K 21/16 (2013.01); B25D 11/064 (2013.01); B25D 2250/095 (2013.01); H02K 2211/03 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A power tool comprising:
a housing having a motor housing portion, a handle portion, and a battery pack interface, wherein the battery pack interface is configured to removably receive and support a battery pack;
a brushless direct current (DC) motor located within the motor housing portion and having a rotor and a stator, wherein the rotor is coupled to a motor shaft arranged to produce an output outside of the housing;
a non-conductive terminal mount located on an outer peripheral surface of the stator and including an angled surface, wherein the angled surface is not substantially parallel to a longitudinal axis of the motor; and
a plurality of terminals mounted on the angled surface of the terminal mount, wherein each of the terminals is angled in a first direction such that the terminals are not substantially parallel to the longitudinal axis of the motor;
wherein a first end of each of the terminals includes a tang loop configured to be electrically and physically connected to a stator coil;
wherein a second end of each of the terminals that is opposite the first end is electrically connected to a power source configured to provide power to the stator coil;
wherein the first end of each of the terminals is located closer to the longitudinal axis than the respective second end of each terminal; and
wherein each of the terminals is angled in a second direction different than the first direction and about a first respective axis through each of the terminals, the first respective axis being perpendicular to the longitudinal axis.