US 11,689,082 B2
Control and power module for brushless motor
Madhur M. Purohit, Ellicott City, MD (US); Joshua M. Lewis, Baltimore, MD (US); Marcell E. Coates, Baltimore, MD (US); Michael D. Grove, Windsor, PA (US); and Victor A. Dorado, White Marsh, MD (US)
Assigned to Black & Decker Inc., New Britain, CT (US)
Filed by Black & Decker Inc., New Britain, CT (US)
Filed on Aug. 10, 2022, as Appl. No. 17/885,333.
Application 17/885,333 is a continuation of application No. 16/951,303, filed on Nov. 18, 2020, granted, now 11,444,512.
Application 16/951,303 is a continuation of application No. 15/708,484, filed on Sep. 19, 2017, granted, now 10,873,244, issued on Dec. 22, 2020.
Application 15/708,484 is a continuation of application No. 15/708,519, filed on Sep. 19, 2017, granted, now 10,848,034, issued on Nov. 24, 2020.
Claims priority of provisional application 62/396,420, filed on Sep. 19, 2016.
Prior Publication US 2022/0385143 A1, Dec. 1, 2022
Int. Cl. H02K 11/215 (2016.01); B25F 5/00 (2006.01); H02K 9/22 (2006.01); H02K 11/33 (2016.01); B25F 5/02 (2006.01); H02K 5/08 (2006.01); H02K 5/22 (2006.01); H02K 7/14 (2006.01); H05K 1/02 (2006.01); H05K 1/11 (2006.01); H05K 1/18 (2006.01); H05K 5/00 (2006.01); H05K 7/20 (2006.01); H05K 3/28 (2006.01); H05K 5/02 (2006.01); H05K 5/06 (2006.01); H05K 7/14 (2006.01); H02K 29/08 (2006.01)
CPC H02K 11/215 (2016.01) [B25F 5/008 (2013.01); B25F 5/02 (2013.01); H02K 5/08 (2013.01); H02K 5/22 (2013.01); H02K 5/225 (2013.01); H02K 7/145 (2013.01); H02K 9/22 (2013.01); H02K 9/227 (2021.01); H02K 11/33 (2016.01); H05K 1/0203 (2013.01); H05K 1/115 (2013.01); H05K 1/181 (2013.01); H05K 3/284 (2013.01); H05K 5/0073 (2013.01); H05K 5/0247 (2013.01); H05K 5/061 (2013.01); H05K 7/1427 (2013.01); H05K 7/209 (2013.01); H05K 7/2039 (2013.01); H02K 9/223 (2021.01); H02K 29/08 (2013.01); H02K 2203/03 (2013.01); H02K 2211/03 (2013.01); H05K 5/0086 (2013.01); H05K 2201/066 (2013.01); H05K 2201/09018 (2013.01); H05K 2201/09036 (2013.01); H05K 2201/10053 (2013.01); H05K 2201/10151 (2013.01); H05K 2201/10166 (2013.01); H05K 2201/10522 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power tool comprising:
a tool housing;
an electric motor disposed within the tool housing and including an output shaft having a longitudinal axis;
a printed circuit board (PCB) being substantially disc-shaped and including a first surface and a second surface;
a plurality of power switches mounted on at least one of the first surface and/or the second surface of the PCB;
a plurality of magnetic sensors mounted on the first surface of the PCB facing the motor substantially equidistantly from a center of the PCB;
a heat sink in thermal communication with the plurality of power switches disposed between the first surface of the PCB and the electric motor; and
a molded casing structurally securing the heat sink relative to the PCB, wherein the molded casing includes a ring-shaped inner wall defining a center opening sized to be securely fitted on the output shaft, at least one first opening provided at a first radial distance from the center opening arranged to receive the plurality of magnetic sensors therein to allow the plurality of magnetic sensors to magnetically interface with the electric motor, and at least one second opening provided at a second radial distance from the center opening greater than the first radial distance arranged to securely receive the heat sink therein.