公开(公告)号：US20140215839A1

公开(公告)日：2014-08-07

申请号：US14164128

申请日：2014-01-24

Applicant: MAKITA CORPORATION

Inventor： Kenji ABE ,  Yusuke HIRATA ,  Tatsuya Nagahama

IPC: B27B5/38 ,  H02K7/14 ,  H02K7/106 ,  B23Q11/12 ,  H02K9/06

CPC classification number: B27B5/38 ,  B23Q11/126 ,  B25F5/001 ,  B25F5/008 ,  H02K7/106 ,  H02K7/145 ,  H02K9/06 ,  H02K11/0094

Abstract: A power tool, for example, a portable circular saw, includes a fan, a motor configured to rotate the fan, an output part or shaft driven by the motor, a motor housing that houses the motor, a grip housing connected to the motor housing, a trigger associated with the grip housing, and a brake member configured to brake a rotation of the motor, the brake member being mounted inside the grip housing. The brake member may be a resistive element of a rheostatic braking system. The housing and fan are configured such that cooling air is directed to cool the brake member.

Abstract translation: 电动工具例如便携式圆锯包括风扇，构造成使风扇旋转的电动机，由电动机驱动的输出部分或轴，容纳电动机的电动机壳体，连接到电动机壳体的把手壳体 与抓握壳体相关联的扳机，以及构造成制动马达的旋转的制动构件，所述制动构件安装在所述手柄壳体的内部。 制动构件可以是变阻制动系统的电阻元件。 壳体和风扇被构造成使得冷却空气被引导以冷却制动构件。

公开(公告)号：US12155078B2

公开(公告)日：2024-11-26

申请号：US17036435

申请日：2020-09-29

Applicant: MAKITA CORPORATION

Inventor： Tatsuya Nagahama

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

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：US11721990B2

公开(公告)日：2023-08-08

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

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

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：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：US10903718B2

公开(公告)日：2021-01-26

申请号：US15919615

申请日：2018-03-13

Applicant: MAKITA CORPORATION

Inventor： Tatsuya Nagahama ,  Junya Inuzuka ,  Takashi Momose

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

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：US10749360B2

公开(公告)日：2020-08-18

申请号：US16508950

申请日：2019-07-11

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 system includes a hand-held power tool having a power tool housing accommodating a motor, and a battery pack interface electrically connected to the motor within the power tool housing. A battery pack includes a battery pack housing accommodating at least one battery cell and a power tool interface electrically connected to the at least one battery cell within the battery pack housing. The power tool interface is configured to be physically and electrically connected to and disconnected from the battery pack interface of the power tool. A communicator is attached to or accommodated within the battery pack housing. The communicator is configured to wirelessly communicate with an external device.

公开(公告)号：US10090692B2

公开(公告)日：2018-10-02

申请号：US15402584

申请日：2017-01-10

Applicant: MAKITA CORPORATION

Inventor： Shuji Yoshikawa ,  Tatsuya Nagahama ,  Nobuyasu Furui ,  Hitoshi Suzuki ,  Masaaki Fukumoto ,  Takuya Umemura ,  Kosuke Ito

IPC: H02J7/00 ,  A41F9/00 ,  A45F3/14 ,  B25F5/02

Abstract: A charger for a hand-held power tool includes a power source interface, a charger base and a charging cradle rotatably supported on the charger base. The rotatable charging cradle includes at least two charging output terminals electrically connected to the power source interface. A power tool system includes the charger and the hand-held power tool. A method of charging the power tool system includes contacting charging input terminals of the power tool with the charging output terminals, rotating the charging cradle and the power tool relative to the charging base and supplying charging current to at least one battery cell while the charging cradle and the power tool are allowed to freely swing relative to the charging base.

公开(公告)号：US20180076639A1

公开(公告)日：2018-03-15

申请号：US15689725

申请日：2017-08-29

Applicant: MAKITA CORPORATION

Inventor： Nobuyasu FURUI ,  Hitoshi Suzuki ,  Masaaki FUKUMOTO ,  Takuya UMEMURA ,  Kosuke ITO ,  Hitoshi Sengiku ,  Shuji Yoshikawa ,  Tatsuya Nagahama

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

CPC classification number: H02J7/0042 ,  B25F3/00 ,  B25F5/00 ,  B25F5/02 ,  G05B13/024 ,  G08C17/02 ,  H02J7/0052

Abstract: A method for recharging a battery pack (40; 40′) includes attaching a portable charger (120) to a user, which portable charger comprises or is attached to a self-contained power supply (130, 140) and wherein a first charging port (132, 146) of the portable charger is disposed, e.g., on a belt (144) worn by the user, hanging the battery pack on the belt while the battery pack is physically engaged and in electrical communication with a power tool (10; 10′), and initiating a transfer of power from the charger to the battery pack when the first charging port is at least proximal to a second charging port (85, 148) that is in electrical communication with at least one battery cell (50) of the battery pack. A portable charging system capable of performing this method, as well as an adapter for use in performing this method, are also disclosed.

公开(公告)号：US20150069864A1

公开(公告)日：2015-03-12

申请号：US14481237

申请日：2014-09-09

Applicant: MAKITA CORPORATION

Inventor： Tatsuya Nagahama ,  Junya lnuzuka ,  Takashi Momose

IPC: H02K7/14 ,  H02K11/00 ,  H02K3/38 ,  H02K3/28

CPC classification number: H02K7/145 ,  H02K3/28 ,  H02K3/522 ,  H02K5/225 ,  H02K7/116 ,  H02K11/215 ,  H02K11/27 ,  H02K29/08 ,  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.

Abstract translation: 电动工具（1; 90）包括具有定子（18）和转子（19）的电动机（17）。 定子（18）包括分别设置在定子铁心（20）的轴向方向前后的前后绝缘体（21,22）。 至少六个线圈（23）分别缠绕在定子（18）上，使得线圈（23）通过前后绝缘体（21,22）缠绕。 绕线（23a）分别电连接周向相邻的线圈对（23）。 短路装置（25）使相对于彼此对角地或直径地对准的各对绕组（23a）短路。