公开(公告)号：US20250079610A1

公开(公告)日：2025-03-06

申请号：US18724266

申请日：2023-01-03

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： James Wekwert ,  Zachary G. Stanke ,  Gareth Mueckl ,  Christopher J. Kujawski ,  Daniel M. Blau

IPC: H01M50/247 ,  B25F5/02 ,  H01M50/284 ,  H01M50/55 ,  H02K7/14 ,  H02K9/06 ,  H02K11/00 ,  H02K11/33 ,  H02K21/16 ,  H02K21/22

Abstract: A system including a power tool and a battery pack. The system includes a power tool including a housing. The housing includes a battery pack interface that includes a first battery pack terminal and a first retaining element. The power tool also includes an electric motor and a controller. The electric motor includes an inner stator, an outer rotor, and a fan. A battery pack includes a base, a stem, a second retaining element, and a single battery cell connected to a second battery pack terminal. The battery pack produces at least a 170 watt output. The stem of the battery pack is configured to be inserted into the battery pack interface of the power tool. The second retaining element is configured to engage the first retaining element. The controller is and configured to control power supplied from the second battery pack terminal to the electric motor.

公开(公告)号：US20240113593A1

公开(公告)日：2024-04-04

申请号：US18479407

申请日：2023-10-02

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Zachary G. Stanke ,  Daniel M. Blau ,  Christopher J. Kujawski

IPC: H02K7/14 ,  H02K11/00 ,  H02K21/16

CPC classification number: H02K7/145 ,  H02K11/0094 ,  H02K21/16 ,  B23D51/16

Abstract: A power tool includes a housing, a rechargeable battery pack coupled to the housing, and a motor supported by the housing. The motor includes a stator assembly having a stator frame with an opening extending therethrough and a plurality of coil windings configured to be selectively powered by the rechargeable battery pack. The coil windings are positioned adjacent the opening of the stator frame. The motor further includes a rotor assembly disposed within the stator assembly and configured to rotate as the coil windings are powered by the rechargeable battery pack. Moreover, the power tool includes an output drive assembly supported by the housing. The output drive assembly extends through the opening of the stator frame to be operably coupled to the rotor assembly.

公开(公告)号：US20240186845A1

公开(公告)日：2024-06-06

申请号：US18525279

申请日：2023-11-30

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Jacob G. Wood ,  Carter H. Ypma ,  Jordan P. Gilsinger ,  Christopher J. Kujawski ,  Ryan Buttke ,  Andrew T. Beyerl ,  Linnea Emerson ,  Matthew R. Bailey ,  Jeffrey C. Hessenberger

IPC: H02K1/18 ,  H02K7/08 ,  H02K7/14 ,  H02K11/21

CPC classification number: H02K1/18 ,  H02K7/083 ,  H02K7/145 ,  H02K11/21 ,  H02K2211/03

Abstract: An electric motor includes a rotor assembly including a rotor shaft, a rotor body fixedly coupled to the rotor shaft, and a plurality of magnets coupled to the rotor body. The electric motor also includes a stator assembly at least partially received within the rotor body. The stator assembly includes a stator mount including a stator support portion and a motor support portion. The stator assembly also includes a stator core assembly fixedly supported by the stator mount, the stator core assembly defining a central bore that receives the rotor shaft and the stator support portion. The electric motor also includes a bearing having an outer race and an inner race, the outer race being supported by the stator core assembly, and the inner race supporting the rotor shaft for rotation relative to the stator assembly. The stator core assembly further defines a bearing pocket adjacent to the central bore.