公开(公告)号：US20240313620A1

公开(公告)日：2024-09-19

申请号：US18681228

申请日：2022-08-19

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Linnea Emerson ,  Brian Trump

IPC: H02K9/06 ,  A01G20/47 ,  F04D25/06 ,  H02K21/22

CPC classification number: H02K9/06 ,  F04D25/064 ,  H02K21/22 ,  A01G20/47

Abstract: An outer rotor for use with a brushless DC electric motor includes a rotor body, a shaft coupled for co-rotation with the rotor body and defining a rotational axis, a cover surrounding at least a portion of the rotor body, and a fan integrally formed with the cover as a single piece. The fan includes a plurality of blades extending radially outward of the cover and configured to induce an airflow along an exterior surface of the cover in a direction parallel with the rotational axis.

公开(公告)号：US20250038607A1

公开(公告)日：2025-01-30

申请号：US18716354

申请日：2022-12-14

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Linnea Emerson ,  Jeffrey C. Hessenberger

IPC: H02K3/52 ,  H02K7/14 ,  H02K15/00

Abstract: Power tools described herein may include a housing, a motor, and a plurality of terminals. A slot may be formed between at least two terminal posts protruding from a surface of each terminal. A motor wire may be configured to be secured to its respective terminal within the slot by pressing a tip of a first electrode into contact with an outer portion of at least one terminal post of the at least two terminal posts, and performing a securing process (e.g., welding, fusing, etc.) by controlling current to pass through the first electrode to a second electrode that is also in contact with the respective terminal. The tip of the first electrode may be configured to prevent the at least one terminal post from moving outwardly away from a center of the respective terminal during the performance of the securing process.

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.

公开(公告)号：US20250023415A1

公开(公告)日：2025-01-16

申请号：US18768647

申请日：2024-07-10

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Keith Boulanger ,  Megan Schultz ,  Matthew R. Bailey ,  Jacob A. Edwards ,  Linnea Emerson

IPC: H02K3/52 ,  H02K7/14 ,  H02K9/06 ,  H02K21/16

Abstract: An electric motor may include a rotor assembly including a rotor shaft. An electric motor may include a stator assembly including a plurality of stator segments arranged adjacent one another in a circumferential direction of the stator assembly, at least one stator segment including a core having a core yoke portion and a core tooth portion, an insulator at least partially covering the core and having an insulator yoke portion and an insulator tooth portion, a stator segment yoke portion formed by the core yoke portion and the insulator yoke portion, a stator segment tooth portion formed by the core tooth portion and the insulator tooth portion, and a stator winding extending about the stator segment tooth portion including a wire lead. The insulator yoke portion includes a standoff portion that defines a wire notch. The wire notch at least partially receives the wire lead.

公开(公告)号：US20240405621A1

公开(公告)日：2024-12-05

申请号：US18679654

申请日：2024-05-31

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Ashad Farhan ,  Keith Boulanger ,  Jeffrey C. Hessenberger ,  Linnea Emerson ,  Jacob N. Nemec ,  Matthew R. Bailey

IPC: H02K1/276 ,  H02K7/14 ,  H02K21/16

Abstract: A power tool including a battery pack interface and a consequent pole motor. The battery pack interface is configured to receive a removable and rechargeable battery pack. The consequent pole motor includes a stator including a plurality of stator teeth configured to receive a plurality of stator coils, and a rotor configured to rotate with respect to the stator. The rotor includes a first permanent magnet positioned within the rotor, a second permanent magnet positioned within the rotor, and a consequent pole located between the first permanent magnet and the second permanent magnet. The consequent pole has a length and a width. The consequent pole is made of a non-magnetic material.

公开(公告)号：US20240275240A1

公开(公告)日：2024-08-15

申请号：US18436469

申请日：2024-02-08

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Jacob N. Nemec ,  Dawid A. Bilski ,  Linnea Emerson ,  Troy C. Thorson ,  Anthony E. Breitbach ,  Terry L. Timmons ,  Brandon L. Yahr ,  Paul J. Grosskreuz ,  Russell M. Rapant

IPC: H02K9/06 ,  H02K7/14

CPC classification number: H02K9/06 ,  H02K7/145

Abstract: An electric motor comprising a stator and a rotor assembly at least partially received in the stator. The rotor assembly includes a rotor body, a fan, and a shaft. The rotor body includes a lamination stack which defines a central aperture. The fan is formed separately from the rotor body, and the fan is coupled to the rotor body by a torque coupling. The shaft includes an outer surface. The shaft is pressed into the central aperture of the lamination stack with the outer surface engaged with the central aperture by an interference fit.

公开(公告)号：US20240204586A1

公开(公告)日：2024-06-20

申请号：US18532223

申请日：2023-12-07

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Andrew R. Tess ,  Linnea Emerson ,  Matthew R. Bailey ,  Jeffrey C. Hessenberger

IPC: H02K1/18 ,  H02K3/28 ,  H02K3/34 ,  H02K11/00 ,  H02K15/00

CPC classification number: H02K1/18 ,  H02K3/28 ,  H02K3/345 ,  H02K11/0094 ,  H02K15/0068 ,  H02K2203/03 ,  H02K2203/09

Abstract: An electric motor may include a rotor assembly including a rotor shaft defining a rotational axis. An electric motor may include a stator assembly including a core, an insulator at least partially covering the core, and a plurality of windings, the insulator defining one of a post that protrudes in an axial direction parallel with the rotational axis or a receptacle in which the post is receivable. An electric motor may include a bus bar assembly including a non-conductive body and a plurality of conductors configured to make an electrical connection between at least two windings of the plurality of windings, the non-conductive body including the other of the post or the receptacle, wherein the receptacle includes at least one of an aperture or a recess, and wherein the post is received within the receptacle to secure the non-conductive body to the insulator.

公开(公告)号：US20240195243A1

公开(公告)日：2024-06-13

申请号：US18533455

申请日：2023-12-08

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Rohan S. Gosalia ,  Zhiwei Zhang ,  Linnea Emerson ,  Keith Boulanger ,  Jeffrey C. Hessenberger ,  Matthew R. Bailey ,  Ashad Farhan

IPC: H02K1/2791 ,  H02K1/276 ,  H02K7/14 ,  H02K21/14 ,  H02K21/22

CPC classification number: H02K1/2791 ,  H02K1/276 ,  H02K7/145 ,  H02K21/14 ,  H02K21/22

Abstract: A power tool may include a battery pack interface configured to receive a removable and rechargeable battery pack. A device may include an outer rotor motor including a stator including a plurality of stator teeth configured to receive a plurality of stator coils and a rotor configured to rotate around the stator. The rotor includes a first permanent magnet positioned on an inner surface of the rotor, a second permanent magnet positioned on the inner surface of the rotor, and an air slot located between the first permanent magnet and the second permanent magnet on the inner surface of the rotor. The air slot has a length and a width. The length of the air slot is greater than a length of the first permanent magnet or the second permanent magnet.