公开(公告)号：US11626645B2

公开(公告)日：2023-04-11

申请号：US17828638

申请日：2022-05-31

Applicant: Milwaukee Electric Tool Corporation

Inventor： Andrew T. Beyerl ,  Michael Kolden ,  Troy C. Thorson ,  Jeffrey M. Wackwitz ,  Jeffrey S. Holly

IPC: H01M50/213 ,  H01M50/20 ,  H01M50/209

Abstract: A battery pack that is connectable to and supportable by a power tool (e.g., a hand-held power tool). The battery pack includes a top housing having a support member. The support member of the battery pack top housing is configured or operable to reinforce a support portion of the battery pack that is used to connect the battery pack to the power tool. By reinforcing the support portion of the battery pack, an interface between the battery pack and the power tool is able to withstand greater forces (e.g., from vibrations caused by the power tool).

公开(公告)号：US20220376585A1

公开(公告)日：2022-11-24

申请号：US17883428

申请日：2022-08-08

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Jeffrey C. Hessenberger ,  Michael Kolden ,  Andrew T. Beyerl

IPC: H02K7/14 ,  B25F5/00 ,  H02K7/04 ,  H02K9/06

Abstract: A power tool includes a housing, a battery connection portion supported by the housing, a drive mechanism configured to operate a working element, and a brushless DC motor positioned within the housing and connected to the drive mechanism. The motor includes a rotor, stator surrounding the motor, and an output shaft fixed to the rotor such that movement of the rotor is transmitted to the output shaft. The motor also includes a fan coupled to the output shaft to rotate with the output shaft and the rotor, and a brass bushing fixed to the output shaft to rotate with the rotor and the output shaft relative to the stator. The bushing includes a balancing feature.

公开(公告)号：US11496022B2

公开(公告)日：2022-11-08

申请号：US17019962

申请日：2020-09-14

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Andrew T. Beyerl ,  Keith Boulanger ,  Alex Huber ,  William A. Elger ,  Jeffrey M. Wackwitz

IPC: H02K7/14 ,  H02K5/15 ,  H02K7/08 ,  H02K7/116 ,  B25F5/00 ,  H02K29/08 ,  H02K1/18 ,  H02K11/21 ,  H02K5/16 ,  H02K21/14 ,  H02K9/06 ,  H02K11/215

Abstract: A power tool including a housing, a controller within the housing, and a brushless motor within the housing and controlled by the controller. The brushless motor including a stator assembly including a stator core having stator laminations with an annular portion and inwardly extending stator teeth. The stator assembly defines a stator envelope in an axial direction extending between axial ends of stator end caps of the stator assembly. The brushless motor further includes a rotor assembly including a rotor core having rotor laminations and defining a central aperture that extends in the axial direction and that receives a shaft, and a position sensor board assembly including position sensors and configured to provide position information of the rotor core to the controller. The rotor assembly and the position sensor board assembly are provided at least partially within the stator envelope.

公开(公告)号：US11411467B2

公开(公告)日：2022-08-09

申请号：US16866355

申请日：2020-05-04

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Jeffrey C. Hessenberger ,  Michael Kolden ,  Andrew T. Beyerl

IPC: B25F5/00 ,  H02K7/14 ,  H02K7/04 ,  H02K9/06

Abstract: A power tool includes a housing, a battery connection portion supported by the housing, a drive mechanism configured to operate a working element, and a brushless DC motor positioned within the housing and connected to the drive mechanism. The motor includes a rotor, stator surrounding the motor, and an output shaft fixed to the rotor such that movement of the rotor is transmitted to the output shaft. The motor also includes a fan coupled to the output shaft to rotate with the output shaft and the rotor, and a brass bushing fixed to the output shaft to rotate with the rotor and the output shaft relative to the stator. The bushing includes a balancing feature.

公开(公告)号：US20210184304A1

公开(公告)日：2021-06-17

申请号：US17185067

申请日：2021-02-25

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Andrew T. Beyerl ,  Michael Kolden ,  Troy C. Thorson ,  Jeffrey M. Wackwitz ,  Jeffrey S. Holly

IPC: H01M50/213 ,  H01M50/20 ,  H01M50/209

Abstract: A battery pack that is connectable to and supportable by a power tool (e.g., a hand-held power tool). The battery pack includes a top housing having a support member. The support member of the battery pack top housing is configured or operable to reinforce a support portion of the battery pack that is used to connect the battery pack to the power tool. By reinforcing the support portion of the battery pack, an interface between the battery pack and the power tool is able to withstand greater forces (e.g., from vibrations caused by the power tool).

公开(公告)号：US10938079B2

公开(公告)日：2021-03-02

申请号：US16292679

申请日：2019-03-05

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Andrew T. Beyerl ,  Michael Kolden ,  Troy C. Thorson ,  Jeffrey M. Wackwitz ,  Jeffrey S. Holly

IPC: H01M2/10 ,  H01M50/213 ,  H01M50/20 ,  H01M50/209

Abstract: A battery pack that is connectable to and supportable by a power tool (e.g., a hand-held power tool). The battery pack includes a top housing having a support member. The support member of the battery pack top housing is configured or operable to reinforce a support portion of the battery pack that is used to connect the battery pack to the power tool. By reinforcing the support portion of the battery pack, an interface between the battery pack and the power tool is able to withstand greater forces (e.g., from vibrations caused by the power tool).

公开(公告)号：US10931167B2

公开(公告)日：2021-02-23

申请号：US16879090

申请日：2020-05-20

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Andrew T. Beyerl ,  Keith Boulanger ,  Alex Huber ,  William A. Elger ,  Jeffrey M. Wackwitz

IPC: H02K7/14 ,  B25F5/00 ,  H02K29/08 ,  H02K1/18 ,  H02K5/15 ,  H02K7/08 ,  H02K11/21 ,  H02K5/16 ,  H02K7/116 ,  H02K21/14 ,  H02K9/06 ,  H02K11/215

Abstract: A power tool including a housing, a controller within the housing, and a brushless motor within the housing and controlled by the controller. The brushless motor includes a stator assembly, a rotor core, and a rotor enclosure. The stator assembly includes a stator core having stator laminations defining a stack length in an axial direction. The rotor enclosure includes a front end cap provided on a first side of the rotor core having a front bearing holder; and a rear end cap provided on a second side of the rotor core. The brushless motor further includes a fan, a front bearing, and a rear bearing. The front bearing holder and the fan define a bearing-to-fan length in the axial direction between axial ends of the front bearing holder and the fan, wherein a difference between the bearing-to-fan length and the stack length is less than 23.5 millimeters.

公开(公告)号：US10693345B2

公开(公告)日：2020-06-23

申请号：US16422337

申请日：2019-05-24

Applicant: Milwaukee Electric Tool Corporation

Inventor： Andrew T. Beyerl

IPC: H02K11/33 ,  H02K7/14 ,  B23B45/02 ,  B25B21/00 ,  H02K29/08 ,  H02K3/52 ,  B25F5/00

Abstract: A power tool with a combined printed circuit board (PCB) having a doughnut shape and located coaxially with a motor shaft. The combined PCB is secured to a heat sink on one end of the motor and a metal end piece is positioned on an opposite end of the motor. The metal end cap and heat sink are secured to one another via fasteners to provide a rigid coupling. A tabbed end piece is provided between the heat sink and the motor stator and is also secured into place via the fasteners. The tabbed end piece includes wire support tabs that provide strain relief to motor coil leads. The wire support tabs extend axially from circumferential locations of the tabbed end piece and include channels to guide the motor coil leads to solder contact points on the combined PCB.

公开(公告)号：US20200177041A1

公开(公告)日：2020-06-04

申请号：US16698283

申请日：2019-11-27

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Russell M. Rapant ,  Andrew T. Beyerl

IPC: H02K1/28 ,  H02K1/17 ,  H02K15/12

Abstract: An electric motor includes a stator and a rotor assembly received in the stator. The rotor assembly includes a rotor body having a lamination stack, and an integral fan and magnet retention formed by molding an insulative material to the lamination stack. The rotor assembly also includes a shaft pressed into the rotor body. The shaft is pressed into the rotor body after the insulative material is molded to the lamination stack to form the integral fan and magnet retention.

公开(公告)号：US10530220B2

公开(公告)日：2020-01-07

申请号：US16388422

申请日：2019-04-18

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Matthew J. Mergener ,  Michael Kolden ,  William E. Check ,  Matthew P. Wycklendt ,  Andrew T. Beyerl ,  John W. Thiele ,  Todd C. Hunkins

IPC: H02K11/30 ,  H02K11/33 ,  H02K5/18 ,  H02K9/06 ,  H02K11/215 ,  H02K29/08 ,  B25B21/00 ,  B25F5/00 ,  H02K7/14 ,  B25B21/02 ,  H02K11/38 ,  H02K5/04 ,  H02K21/04 ,  H05K1/02 ,  H05K1/11 ,  H05K1/18 ,  H05K7/20

Abstract: A power tool with a combined printed circuit board (PCB) that reduces internal wiring of the power tool and provides a large amount of air flow to internal components. In some instances, the combined PCB has a surfboard shape and includes a motor control unit and power switching elements (Field Effect Transistors or FETs). The combined surfboard PCB is located above the trigger, but below the motor and drive mechanism. In other instances, the combined PCB has a doughnut shape and is located coaxially with a motor shaft. The combined PCB may be positioned between a doughnut-shaped control PCB and the motor.