公开(公告)号：US20200321576A1

公开(公告)日：2020-10-08

申请号：US16824232

申请日：2020-03-19

Applicant: Makita Corporation ,  Murata Manufacturing Co., Ltd.

Inventor： Tatsuya NAGAHAMA ,  Hideyuki TAGA ,  Toshiaki UENO ,  Naoki NISHI

IPC: H01M2/10 ,  H05K1/18 ,  H01M10/42

Abstract: A battery pack includes: a housing (18); one or more battery cells (12) housed inside the housing; one or more seat surfaces (52a, 54a, 56a, 58a) disposed inside the housing; a circuit board (16), which is housed inside the housing and is mounted on the seat surface(s); and one or more terminals (20b, 22b) electrically connected to the circuit board. One or more elastic sheets (60, 62) surround(s) the perimeter(s) of the terminal(s) and is (are) interposed between the circuit board and the seat surface(s).

公开(公告)号：US20250046929A1

公开(公告)日：2025-02-06

申请号：US18916024

申请日：2024-10-15

Applicant: MAKITA CORPORATION

Inventor： Tatsuya NAGAHAMA

IPC: H01M50/213 ,  H01M10/42 ,  H01M50/10 ,  H01M50/30 ,  H01M50/543 ,  H01M50/572

Abstract: A battery pack includes at least one rechargeable battery cell disposed within an outer case. The outer case has an upper surface having at least one terminal opening that exposes at least one terminal electrically connected to the at least one rechargeable battery cell; a bottom wall; side surfaces extending perpendicularly from the bottom wall; and four protruding portions respectively protruding downward from four corners of the bottom wall. The four protruding portions are configured such that, when the four protruding portions of the battery pack contact a flat surface, only the four protruding portions contact the flat surface and a central portion of an exterior surface of the bottom wall does not contact the flat surface.

公开(公告)号：US20240128834A1

公开(公告)日：2024-04-18

申请号：US18397480

申请日：2023-12-27

Applicant: MAKITA CORPORATION

Inventor： Tatsuya NAGAHAMA ,  Junya INUZUKA ,  Takashi MOMOSE

IPC: H02K7/14 ,  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 includes a housing formed of two half-housings and an end cap. A stator is mounted in the housing, and a rotor including a rotor core and a permanent magnet is mounted in the stator core. A rotary shaft having an axis of rotation extending in a front-rear direction supports the rotor core. Insulators are mounted at front and rear axial ends of the stator core, a planetary gear is mounted forward of the rotor core and a handle extends from the housing. The front insulator includes two recesses, and a first portion of each recess opens radially and a second portion of each recess opens axially rearward. Portions of the stator core cover the recesses, and projections extend from the housing and respectively mate with the recesses.

公开(公告)号：US20170214292A1

公开(公告)日：2017-07-27

申请号：US15392747

申请日：2016-12-28

Applicant: MAKITA CORPORATION

Inventor： Tatsuya NAGAHAMA

IPC: H02K7/14 ,  H02K11/215 ,  H02K9/06 ,  H02P6/17 ,  B25F5/00 ,  H01M2/02 ,  H01M2/30 ,  H01M10/42 ,  H01M10/48 ,  H02K1/12 ,  H02K5/22

CPC classification number: H02K7/145 ,  B25F5/00 ,  H01M2/0202 ,  H01M2/30 ,  H01M10/425 ,  H01M10/488 ,  H01M2220/30 ,  H02K1/12 ,  H02K3/522 ,  H02K5/225 ,  H02K9/06 ,  H02K11/21 ,  H02K11/215 ,  H02P6/17

Abstract: In an impact driver, a stator is made compact to accommodate a brushless motor in a reduced space, thereby keeping a housing compact, and productivity and handleability are also improved. The impact driver includes a brushless motor including a stator in which coils are wound and that includes fusing terminals at which the coils are fused, and a rotor capable of rotating relative to the stator, lead wires for supplying power to the coils, respectively, and lead wire-side terminals to which the lead wires are connected, respectively. The fusing terminals and the lead wire-side terminals are connected to each other at a predetermined position (a connection plate) in a circumferential direction of the stator by means of screws.

公开(公告)号：US20240006699A1

公开(公告)日：2024-01-04

申请号：US18038593

申请日：2021-12-07

Applicant: MAKITA CORPORATION

Inventor： Tatsuya NAGAHAMA ,  Kazuya TANAKA

IPC: H01M50/244 ,  H01M50/247 ,  H01M50/284

CPC classification number: H01M50/244 ,  H01M50/247 ,  H01M50/284 ,  H01M50/213

Abstract: A battery pack includes a casing, a battery cell, a circuit board, an engaging member, a first biasing member biasing the engaging member upward, and a second biasing member biasing the engaging member upward. A part of the circuit board is arranged between the first biasing member and the second biasing member. The engaging member includes an engaging portion protruding to the outside of the casing. The engaging portion has an engaging surface that extends along an up-down direction and a left-right direction and engages with an electrical device. In a front-rear direction, the engaging surface is arranged rearward of a front end of the first biasing member and frontward of a rear end of the first biasing member. In the front-rear direction, the engaging surface is arranged rearward of a front end of the second biasing member and frontward of a rear end of the second biasing member.

公开(公告)号：US20220367963A1

公开(公告)日：2022-11-17

申请号：US17761535

申请日：2020-09-24

Applicant: MAKITA CORPORATION

Inventor： Tatsuya NAGAHAMA ,  Minoru GYODA

IPC: H01M50/296 ,  H01M50/213 ,  H01M50/247 ,  H01M50/284 ,  H01M50/24

Abstract: A battery pack may include a battery cell; a control board disposed above the battery cell and connected to the battery cell; a plurality of terminals disposed on the control board and disposed side by side in a left-right direction; a plurality of partition wall disposed on the control board; and an outer case housing the battery cell, the control board, the plurality of terminals, and the plurality of partition walls, and having an upper surface comprising a terminal reception part configured to receive a terminal of the power tool. The plurality of terminals may include a first terminal and a second terminal adjacent to the first terminal in the left-right direction. At least two of the partition walls are disposed between the first terminal and the second terminal.

公开(公告)号：US20210098757A1

公开(公告)日：2021-04-01

申请号：US17036435

申请日：2020-09-29

Applicant: MAKITA CORPORATION

Inventor： Tatsuya NAGAHAMA

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

Abstract: A battery pack (2; 602) includes: an outer case (12; 612), which comprises an upper-part case (14) and a lower-part case (15; 615) fixed to the upper-part case (14); at least one battery cell (90a-90j); and a cell case (80), which houses the battery cell(s) (90a-90j). A clearance (C11-C13) is provided between the lower-part case (15; 615) and the entire lower surface of the cell case (80).

公开(公告)号：US20200176736A1

公开(公告)日：2020-06-04

申请号：US16688342

申请日：2019-11-19

Applicant: MAKITA CORPORATION

Inventor： Hideyuki TAGA ,  Tatsuya NAGAHAMA

IPC: H01M2/10

Abstract: A battery pack may comprise a plurality of battery cells, a cell holder holding the plurality of battery cells, and a case accommodating the cell holder. The case may include a first case, and a second case fixed to the first case. The cell holder may be fixed to the first case by a fastener. The fastener may be shielded from outside of the case in a state where the second case is fixed to the first case.

公开(公告)号：US20190001452A1

公开(公告)日：2019-01-03

申请号：US15978739

申请日：2018-05-14

Applicant: MAKITA CORPORATION

Inventor： Tatsuya NAGAHAMA

IPC: B23Q5/10 ,  H02K7/14 ,  H02K3/50 ,  H02K3/28 ,  H02K3/38 ,  H02K15/00

Abstract: It is intended to provide a power tool including a motor capable of simply dealing with even a complex coil connection structure.A hammer drill includes a plurality of coils, a stator holding the plurality of coils, a rotor that is rotatable with respect to the stator, and a terminal unit including a plurality of fusing terminals electrically connected to the plurality of coils.

公开(公告)号：US20240380225A1

公开(公告)日：2024-11-14

申请号：US18783596

申请日：2024-07-25

Applicant: MAKITA CORPORATION

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

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

Abstract: A power tool system includes a hand-held power tool, a battery pack and an adapter. The hand-held power tool includes a power tool housing that accommodates a motor, and a battery pack interface electrically connected to the motor. The battery pack includes a battery pack housing that accommodates at least one battery cell, and a power tool interface electrically connected to the at least one battery cell. The power tool interface is configured to be physically and electrically connected to and disconnected from the battery pack interface of the power tool. The adapter includes a wireless communicator configured to wirelessly communicate data to/from an external device using radio waves, a self-contained power supply configured to supply electric power to the wireless communicator and an interface configured to attach the adapter to the power tool housing and/or the battery pack housing.