公开(公告)号：US20210057968A1

公开(公告)日：2021-02-25

申请号：US17090240

申请日：2020-11-05

Applicant: MAKITA CORPORATION

Inventor： Kei KOUDA ,  Akira NAITO ,  Hideki ABE

IPC: H02K11/33 ,  A01D69/02 ,  A01D34/78

Abstract: An electric work machine includes a brushless motor including a stator including a stator core, an electrical insulator located on the stator core, and at least one coil wound around the stator core with the electrical insulator in between, and a rotor rotatable with respect to the stator, and an output unit drivable by the brushless motor. The stator core has a through-hole and/or a recess to lock rotation of the stator with a screw.

公开(公告)号：US20230238856A1

公开(公告)日：2023-07-27

申请号：US18127293

申请日：2023-03-28

Applicant: MAKITA CORPORATION

Inventor： Kei KOUDA ,  Hideki ABE

IPC: H02K7/00 ,  H02K5/08 ,  H02K5/16 ,  H02K21/16 ,  A01D34/78 ,  H02K7/08

CPC classification number: H02K7/003 ,  H02K5/08 ,  H02K5/161 ,  H02K21/16 ,  A01D34/78 ,  H02K7/083 ,  F16C3/02

Abstract: An electric work machine, such as a lawn mower includes a motor case (22) fixed inside a main-body housing (10). A brushless motor (21) is housed inside the motor case (22) and includes a stator (23) having a stator core (40), coils (45), and upper and lower insulators (42, 43), and a rotor (24) disposed inward of the stator (23) and having a rotary shaft (25). A spindle (17) is driven by the rotary shaft (25). The motor case (22) holds the stator (23) and axially supports the rotary shaft (25) via bearings (68, 76). One or more insulating members, such as an insulating cap (67) and/or a resin layer (78), provide electrical insulation between the stator core (40) and the rotary shaft (25).

公开(公告)号：US20200052558A1

公开(公告)日：2020-02-13

申请号：US16460149

申请日：2019-07-02

Applicant: MAKITA CORPORATION

Inventor： Kei KOUDA ,  Akira NAITO ,  Hideki ABE

IPC: H02K11/33 ,  A01D34/78 ,  A01D69/02

Abstract: An electric work machine includes a brushless motor including a stator including a stator core, an electrical insulator located on the stator core, and at least one coil wound around the stator core with the electrical insulator in between, and a rotor rotatable with respect to the stator, and an output unit drivable by the brushless motor. The stator core has a through-hole and/or a recess to lock rotation of the stator with a screw.

公开(公告)号：US20220416619A1

公开(公告)日：2022-12-29

申请号：US17903081

申请日：2022-09-06

Applicant: MAKITA CORPORATION

Inventor： Kei KOUDA ,  Hideki ABE

IPC: H02K7/00 ,  H02K5/08 ,  H02K5/16 ,  H02K21/16 ,  A01D34/78 ,  H02K7/08

Abstract: An electric work machine, such as a lawn mower includes a motor case (22) fixed inside a main-body housing (10). A brushless motor (21) is housed inside the motor case (22) and includes a stator (23) having a stator core (40), coils (45), and upper and lower insulators (42, 43), and a rotor (24) disposed inward of the stator (23) and having a rotary shaft (25). A spindle (17) is driven by the rotary shaft (25). The motor case (22) holds the stator (23) and axially supports the rotary shaft (25) via bearings (68, 76). One or more insulating members, such as an insulating cap (67) and/or a resin layer (78), provide electrical insulation between the stator core (40) and the rotary shaft (25).