公开(公告)号：US11715995B2

公开(公告)日：2023-08-01

申请号：US17122601

申请日：2020-12-15

Applicant: MAKITA CORPORATION

Inventor： Tatsuya Nagahama ,  Junya Inuzuka ,  Takashi Momose

IPC: H02K29/08 ,  H02K7/14 ,  H02K5/04 ,  H02K11/215 ,  H02K3/28 ,  H02K3/52 ,  H02K5/22 ,  H02K7/116 ,  H02K11/27 ,  B25F5/02 ,  B25F5/00

CPC classification number: H02K7/145 ,  B25F5/02 ,  H02K3/28 ,  H02K3/522 ,  H02K5/04 ,  H02K5/225 ,  H02K7/116 ,  H02K11/215 ,  H02K11/27 ,  H02K29/08 ,  B25F5/00 ,  H02K2203/03 ,  H02K2203/09

Abstract: A power tool (1; 90) includes a motor (17) having a stator (18) and a rotor (19). The stator (18) includes front and rear insulators (21, 22) respectively disposed forward and rearward of a stator core (20) in an axial direction thereof. At least six coils (23) are respectively wound on the stator (18) such that the coils (23) are wound through the front and rear insulators (21, 22). Winding wires (23a) respectively electrically connect circumferentially-adjacent pairs of the coils (23). A short circuiting device (25) short circuits respective pairs of windings (23a) that are located diagonally or diametrically across from one another.

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：US11707776B2

公开(公告)日：2023-07-25

申请号：US17567190

申请日：2022-01-03

Applicant: MAKITA CORPORATION

Inventor： Hiroki Ikuta ,  Yosuke Naoi

IPC: B21J15/26 ,  B21J15/28 ,  B21J15/10 ,  F16H3/00 ,  F16H1/46 ,  B25F5/00 ,  B21J15/02 ,  B21J15/04

CPC classification number: B21J15/26 ,  B21J15/105 ,  B21J15/28 ,  B25F5/001 ,  F16H1/46 ,  F16H3/005 ,  B21J15/022 ,  B21J15/043

Abstract: A power tool includes a motor and a gear speed reducer. The motor has a motor shaft that is rotatable in a normal direction and in a reverse direction. The gear speed reducer is operably coupled to the motor shaft. The gear speed reducer is configured such that a reduction ratio of the gear speed reducer is changed in response to a change of a rotation direction of the motor shaft.

公开(公告)号：US11707095B2

公开(公告)日：2023-07-25

申请号：US16964539

申请日：2018-12-26

Applicant: TEIJIN LIMITED ,  MAKITA CORPORATION

Inventor： Manabu Tokunaga ,  Kazuhiro Sakurai ,  Nobuyoshi Miyasaka

IPC: A41D13/002 ,  A41D31/14 ,  A41D27/28

CPC classification number: A41D13/0025 ,  A41D27/28 ,  A41D31/14

Abstract: A garment includes a blower device having an inlet and an outlet, an outer fabric, and an inner fabric attached to the outer fabric. The outer fabric has a mounting part to which the blower device is removably mountable in a state in which the inlet is disposed on an outer side of the outer fabric and the outlet is disposed on the inner fabric side of the outer fabric. The internal space is formed between the outer fabric and the inner fabric. The internal space is configured such that, when the garment is not worn and the blower device delivers the ambient air into the internal space at an air volume Q (cubic meter per minute: m3/min), the air volume Q and an internal pressure P (pascal: Pa) of the internal space satisfy a relationship of P≥1.1Q2.

公开(公告)号：US11692535B2

公开(公告)日：2023-07-04

申请号：US17353907

申请日：2021-06-22

Applicant: MAKITA CORPORATION

Inventor： Noriyuki Nishido ,  Yasuhiro Morioka

IPC: F04B35/04 ,  F04B41/02 ,  F04B39/16 ,  F04B39/12 ,  H01M50/207 ,  H01M50/247

CPC classification number: F04B35/04 ,  F04B39/121 ,  F04B39/16 ,  F04B41/02 ,  H01M50/207 ,  H01M50/247 ,  H01M2220/30

Abstract: An air compressor more reliably protects a battery pack without lowering its operability for attachment to and detachment from a battery mount. The air compressor includes an electric motor driven on power from a battery pack having six faces, an operation unit operable to connect or disconnect power to the electric motor, an compression unit driven by the electric motor to produce compressed air, a tank that stores the compressed air, a battery mount that receives an attachment face of the battery pack, and a guard defining a protective area to contain the battery pack and the compression unit. The battery pack is attachable to the battery mount with at least three of the six faces exposed.

公开(公告)号：US11691262B2

公开(公告)日：2023-07-04

申请号：US17022207

申请日：2020-09-16

Applicant: MAKITA CORPORATION

Inventor： Fumitoshi Numata

IPC: B25F5/02 ,  B25F5/00

CPC classification number: B25F5/026 ,  B25F5/008

Abstract: An electric power tool includes a housing, a fan, a tubular portion, and a rectifier. The housing houses a motor. The fan rotates in association with driving of the motor to generate a cooling air for the motor within the housing. The tubular portion is formed in the housing to house the fan. The rectifier is disposed to be opposed to the fan in an upstream side of the cooling air. The rectifier is divided into an inside and an outside in a radial direction of the tubular portion, the outside in the radial direction is formed of the tubular portion, and the inside in the radial direction is formed of a baffle plate assembled to the housing.

公开(公告)号：US20230191566A1

公开(公告)日：2023-06-22

申请号：US17988075

申请日：2022-11-16

Applicant: MAKITA CORPORATION

Inventor： Takeshi KAMIYA

IPC: B25B21/02

CPC classification number: B25B21/02

Abstract: To reduce size increase, an impact tool includes a motor, a spindle located frontward from the motor and rotatable by the motor, an inner hammer supported by the spindle, an outer hammer surrounding the inner hammer and rotatable together with the inner hammer, an anvil strikable by the inner hammer in a rotation direction, a hammer case accommodating the inner hammer and the outer hammer, and a bearing held in the hammer case and supporting the outer hammer in a rotatable manner.

公开(公告)号：US11673240B2

公开(公告)日：2023-06-13

申请号：US16935758

申请日：2020-07-22

Applicant: MAKITA CORPORATION

Inventor： Yuta Araki ,  Motohiro Omura ,  Akira Ito

IPC: B25B21/00 ,  B25B23/147 ,  B25F5/00

CPC classification number: B25B21/008 ,  B25B23/147 ,  B25F5/001

Abstract: A driver-drill (1) includes: a controller (32), which stops rotation of a brushless motor (9) when a torque applied to a spindle (26) reaches a prescribed clutch-actuation torque; and a dial (65), which is capable of specifying, to the controller (32), the setting of the prescribed clutch-actuation torque within a prescribed high-low range of values. In the controller (32), a relationship between clutch-actuation torques and each value in the high-low range is set such that, in a first range in which the values are low, changes in the clutch-actuation torques are the same in the low-speed mode and in the high-speed mode and such that, in a second range outside of the first range, the clutch-actuation torques in the low-speed mode are higher than in the high-speed mode.

公开(公告)号：US20230173652A1

公开(公告)日：2023-06-08

申请号：US18103507

申请日：2023-01-31

Applicant: MAKITA CORPORATION

Inventor： Kiyonobu YOSHIKANE ,  Hajime TAKEUCHI ,  Yoshiro TADA ,  Masanori FURUSAWA ,  Masao MIWA ,  Shinji ONODA ,  Yoshitaka MACHIDA

IPC: B25D16/00 ,  B25F5/02

CPC classification number: B25D16/00 ,  B25F5/02

Abstract: A power tool, such as a hammer drill (100), has first and second battery mount parts (160A, 160B) that are aligned in a longitudinal direction of the power tool. First and second batteries (170A, 170B) are mountable thereon in series along a straight line that extends in the longitudinal direction. The first battery (170A) is mounted on the first battery mount part (160A) by sliding along the straight line towards the second battery mount part (160B). The second battery (170B) is mounted on the second battery mount part (170B) by sliding along the straight line towards the first battery mount part (170A).

公开(公告)号：US20230142408A1

公开(公告)日：2023-05-11

申请号：US17913623

申请日：2021-03-12

Applicant: MAKITA CORPORATION

Inventor： Yasuyuki FUJIMOTO ,  Masao MIWA

IPC: H01M50/244 ,  H01M50/209 ,  H01M50/271

CPC classification number: H01M50/244 ,  H01M50/209 ,  H01M50/271

Abstract: An electrical apparatus includes a body including an output portion, a battery holder having a first surface and a second surface, a first battery mount located on the first surface and including a first guide to allow a first battery to slide on the first battery mount while being guided along the first guide for attachment to and detachment from the first battery mount, and a second battery mount located on the second surface and including a second guide to allow a second battery to slide on the second battery mount while being guided along the second guide for attachment to and detachment from the second battery mount.