公开(公告)号：US20230336010A1

公开(公告)日：2023-10-19

申请号：US18208958

申请日：2023-06-13

Applicant: MAKITA CORPORATION

Inventor： Nobuyasu FURUI ,  Hitoshi SUZUKI ,  Masaaki Fukumoto ,  Takuya UMEMURA ,  Kosuke ITO ,  Hitoshi Sengiku ,  Shuji Yoshikawa ,  Tatsuya NAGAHAMA

IPC: H02J7/00 ,  B25F5/02 ,  G05B13/02 ,  B25F3/00 ,  B25F5/00 ,  G08C17/02

CPC classification number: H02J7/0042 ,  B25F5/02 ,  G05B13/024 ,  H02J7/00 ,  B25F3/00 ,  B25F5/00 ,  G08C17/02

Abstract: A power tool includes a motor and a controller in a power tool housing. A battery pack interface is defined on and/or in the power tool housing. A receptacle is defined on and/or in the power tool housing to removably accommodate a wireless communication adapter such that the wireless communication adapter is disposed entirely within a shell of the power tool and no portion of the wireless communication adapter extends beyond an outer contour of the power tool housing. At least one communication terminal is disposed within the receptacle and is electrically connectable to the wireless communication adapter. The controller outputs to the at least one communication terminal a signal indicating a charge level of a battery pack attached to the battery pack interface, a number of hours of operation of the power tool, a power tool overheated alert, and/or a battery pack overloaded alert.

公开(公告)号：US20210098756A1

公开(公告)日：2021-04-01

申请号：US17036411

申请日：2020-09-29

Applicant: MAKITA CORPORATION

Inventor： Akira NAITO ,  Tatsuya NAGAHAMA

IPC: H01M2/10 ,  H01M2/12

Abstract: A battery pack (2; 602) includes: an outer case (12; 612); one or more battery cells (90a-90j); and a cell case (80), which is housed in the outer case (12; 612) and houses the battery cell(s) (90a-90j). The outer case (12; 612) has: an upper surface (wall) (14b), in which a terminal-opening part (22a) for exposing a terminal (102) is provided; a bottom wall (15e); and a plurality of side surfaces (walls) (15a-15d) extending upward from the bottom wall (15e). The battery cell(s) (90a-90j) is (are) disposed parallel to the bottom wall (15e). An opening (40a-40j) is provided in a specific side surface (15b, 15d), from among the plurality of side surfaces (15a-15d), that faces an end surface of the battery cell(s) (90a-90j) in a longitudinal direction.

公开(公告)号：US20210098755A1

公开(公告)日：2021-04-01

申请号：US17036356

申请日：2020-09-29

Applicant: MAKITA CORPORATION

Inventor： Tatsuya NAGAHAMA ,  Kazuya TANAKA

IPC: H01M2/10 ,  H01M10/42 ,  H01M2/30 ,  H01M2/34 ,  H01M2/02

Abstract: A battery pack (2; 402; 602) includes an outer case (12; 412; 612), which comprises an upper-part case (14; 414) and a lower-part case (15; 415) fixed to the upper-part case (14; 414), and a cell case (80; 480; 780; 980), which is housed in the outer case (12; 412; 612). An engaging part (30) is provided on one of the upper-part case (14; 414) and the cell case (80; 480; 780; 980). An engaged part (110), with which the engaging part (30) engages, is provided on or in the other of the upper-part case (14; 414) and the cell case (80; 480; 780; 980).

公开(公告)号：US20180241281A1

公开(公告)日：2018-08-23

申请号：US15874421

申请日：2018-01-18

Applicant: MAKITA CORPORATION

Inventor： Toan Van DOAN ,  Motohiro OMURA ,  Tatsuya NAGAHAMA

IPC: H02K7/08 ,  H02K21/14 ,  H02K11/215 ,  H02K7/14 ,  H02K5/16 ,  B25D16/00 ,  B25F5/02

CPC classification number: H02K7/083 ,  B25D16/003 ,  B25D16/006 ,  B25D17/00 ,  B25D2211/003 ,  B25D2211/061 ,  B25D2216/0015 ,  B25D2216/0023 ,  B25D2216/0038 ,  B25D2216/0084 ,  B25D2250/095 ,  B25D2250/221 ,  B25D2250/265 ,  B25D2250/331 ,  B25F5/00 ,  B25F5/02 ,  H02K3/522 ,  H02K5/161 ,  H02K7/14 ,  H02K7/145 ,  H02K11/215 ,  H02K21/145 ,  H02K2211/03

Abstract: A power tool including a brushless motor having a sensor circuit board has higher durability. The power tool includes a housing, a brushless motor including a rotor having a rotational shaft, a stator, and a sensor circuit board fixed to the stator and having a rotation detecting element that detects rotation of the rotor, and receiving the rotational shaft through the sensor circuit board, and a bearing held in the housing and supporting the rotational shaft. The bearing is located to overlap the rotation detecting element in an axial direction of the rotational shaft.

公开(公告)号：US20240186863A1

公开(公告)日：2024-06-06

申请号：US18207711

申请日：2023-06-09

Applicant: MAKITA CORPORATION

Inventor： Tatsuya NAGAHAMA ,  Junya lnuzuka ,  Takashi Momose

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

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：US20240106092A1

公开(公告)日：2024-03-28

申请号：US18464502

申请日：2023-09-11

Applicant: MAKITA CORPORATION

Inventor： Hironori OGURA ,  Tatsuya NAGAHAMA

IPC: H01M50/559 ,  H01M10/42 ,  H01M50/247 ,  H01M50/55 ,  H01M50/562

CPC classification number: H01M50/559 ,  H01M10/4257 ,  H01M50/247 ,  H01M50/55 ,  H01M50/562

Abstract: A battery pack may be configured to be attached to and detached from an electric device including a plurality of device-side terminals. The battery pack may include: an outer case; a battery cell; a circuit board; and a plurality of battery-side terminals. A first terminal of the plurality of battery-side terminals may include a clamp portion and a non-clamp portion. The clamp portion may be configured to receive a device-side terminal of the plurality of device-side terminals and clamp the device-side terminal from both sides. An inner surface of the clamp portion may be plated with a first metal. A part of a surface of the non-clamp portion may not be plated with the first metal. The first metal may be a pure metal that is a noble metal or a noble metal alloy.

公开(公告)号：US20220181894A1

公开(公告)日：2022-06-09

申请号：US17522954

申请日：2021-11-10

Applicant: MAKITA CORPORATION

Inventor： Tatsuya NAGAHAMA

IPC: H02J7/00 ,  H01M50/213 ,  H01M50/543 ,  B25F5/02

Abstract: A detachable DC power source includes: a reference surface extending in front-rear and left-right directions; support walls protruding upward from opposite ends of the reference surface and extending in the front-rear direction; battery-side rails protruding outward in the left-right direction from the upper ends of the pair of support walls and extending in the front-rear direction; and a first battery-side distinguishing region disposed between the support walls in the left-right direction and at a connection location between the reference surface and one of the support walls. A first battery-side distinguishing member is provided in the first battery-side distinguishing region and is directly connected to the one the support walls and to the reference surface. The detachable DC power source may be used to power an electrical device having a first device distinguishing part capable of receiving the first battery distinguishing member.

公开(公告)号：US20210367435A1

公开(公告)日：2021-11-25

申请号：US17393780

申请日：2021-08-04

Applicant: MAKITA CORPORATION

Inventor： Nobuyasu FURUI ,  Hitoshi SUZUKI ,  Masaaki Fukumoto ,  Takuya UMEMURA ,  Kosuke ITO ,  Hitoshi Sengiku ,  Shuji Yoshikawa ,  Tatsuya NAGAHAMA

IPC: H02J7/00 ,  B25F5/02 ,  B25F3/00 ,  B25F5/00 ,  G05B13/02 ,  G08C17/02

Abstract: A power tool includes a power tool housing accommodating a motor; a battery pack interface electrically connected to the motor and being configured to be physically and electrically connected to and disconnected from a power tool interface of a battery pack; and a wireless communicator configured to be attached to or detached from the power tool housing. The wireless communicator wirelessly transmits data between the power tool and an external device using radio waves. In addition, the power tool housing includes a receptacle opening configured to accommodate the wireless communicator within the power tool housing such that no part of the wireless communicator projects or protrudes beyond an outer surface or contour of the power tool housing.

公开(公告)号：US20210099053A1

公开(公告)日：2021-04-01

申请号：US17122601

申请日：2020-12-15

Applicant: MAKITA CORPORATION

Inventor： Tatsuya NAGAHAMA ,  Junya lnuzuka ,  Takashi Momose

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

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：US20190006909A1

公开(公告)日：2019-01-03

申请号：US15978467

申请日：2018-05-14

Applicant: MAKITA CORPORATION

Inventor： Tatsuya NAGAHAMA

IPC: H02K5/22 ,  H02K7/14 ,  H02K11/21 ,  B25D16/00

CPC classification number: H02K5/225 ,  B25D16/006 ,  B25D17/00 ,  B25D2216/0084 ,  B25D2250/095 ,  B25D2250/121 ,  B25D2250/145 ,  B25D2250/221 ,  B25D2250/265 ,  B25F5/008 ,  B25F5/02 ,  H02K3/50 ,  H02K7/145 ,  H02K9/06 ,  H02K11/21 ,  H02K29/06 ,  H02K2211/03

Abstract: Provided is a power tool whereby reduction is made for time-consuming effort and cost required in trouble, inspection and so forth related to a motor. A hammer drill, which is an example of a power tool, includes a plurality of coils, an insulator holding the plurality of coils, a terminal unit that is electrically connected to the plurality of coils and is attached to the insulator, a rotor that is rotatable with respect to the insulator, and a sensor board that detects rotation of the rotor and is attached to the terminal unit. The sensor board is detachable from the terminal unit, while the terminal unit is attached to the insulator.