公开(公告)号：US09871389B2

公开(公告)日：2018-01-16

申请号：US14944471

申请日：2015-11-18

Applicant: MAKITA CORPORATION

Inventor： Shunpei Yamaji ,  Takayoshi Endo

IPC: H02J7/00 ,  H02H7/18 ,  H02H3/04

CPC classification number: H02J7/0026 ,  H02H3/044 ,  H02H7/18 ,  H02J7/0021 ,  H02J7/0031 ,  H02J2007/0039

Abstract: A battery pack in the present disclosure comprises: a battery; a switching element that is provided in a discharge path from the battery to an external load and that is configured to complete or interrupt the discharge path; a control circuit that operates by receiving a supply of an electric power from the battery, that conducts an electric current through the switching element so as to allow discharge from the battery to the external load, and upon occurrence of an abnormality in the battery or the external load during the discharge, that interrupts the switching element so as to inhibit the discharge from the battery to the external load; and a protection circuit that monitors an operating condition of the control circuit and that interrupts the switching element when the control circuit is inoperative.

公开(公告)号：US12162113B2

公开(公告)日：2024-12-10

申请号：US17273439

申请日：2019-09-06

Applicant: MAKITA CORPORATION

Inventor： Takashi Matsubara ,  Shunpei Yamaji ,  Akira Mizutani ,  Ryosuke Otani ,  Hiroki Kaneko

IPC: B24B23/00 ,  B24B23/02 ,  B24B55/05 ,  B25F5/02

Abstract: A power tool, such as a grinder, may include: a prime mover such as a motor; a power-transmission mechanism operably connected to the prime mover; a housing that houses the prime mover and the power-transmission mechanism; and a tool-accessory retaining part for holding a tool accessary. The tool-accessory retaining part is operably connected to the power-transmission mechanism. An accessory is mounted on the housing in a detachable manner. A link member moves in response to mounting and demounting of the accessory. A detection sensor is housed in an interior of the housing and includes a non-contact sensor device. The detection sensor is configured to detect movement of the link member using the non-contact sensor device.

公开(公告)号：US12030170B2

公开(公告)日：2024-07-09

申请号：US17640643

申请日：2020-08-06

Applicant: MAKITA CORPORATION

Inventor： Hiroki Kaneko ,  Akira Mizutani ,  Ryosuke Otani ,  Shunpei Yamaji ,  Junya Ishikawa ,  Fumiyoshi Saito

IPC: B25F5/00 ,  B24B47/12 ,  B25F5/02

CPC classification number: B25F5/026 ,  B24B47/12

Abstract: The disclosure discloses an electric power tool. The electric power tool may include a motor, a power transmission mechanism connected to the motor, a housing that houses the motor and the power transmission mechanism, an end tool holder to which an end tool is configured to be attached and from which the end tool is configured to be detached, and connected to the power transmission mechanism, and a handle attached to the housing. The electric power tool may be configured to prohibit rotation of the motor when a user is not gripping the handle.

公开(公告)号：US09941553B2

公开(公告)日：2018-04-10

申请号：US15044593

申请日：2016-02-16

Applicant: MAKITA CORPORATION

Inventor： Takuya Umemura ,  Shunpei Yamaji

IPC: H02J7/04 ,  H02J7/16 ,  H01M10/44 ,  H02J7/00 ,  H01M10/48

CPC classification number: H01M10/443 ,  H01M10/486 ,  H02J7/0029 ,  H02J7/007 ,  H02J7/0091

Abstract: A battery-connection system in one aspect of the present disclosure comprises a battery pack and a connecting device. The connecting device comprises a temperature-related control unit that is configured to execute a specific temperature-related control in accordance with a detection signal outputted from the battery pack when the battery pack is attached to the connecting device, without identifying a type of a battery in the battery pack.

公开(公告)号：US09570924B2

公开(公告)日：2017-02-14

申请号：US14590395

申请日：2015-01-06

Applicant: MAKITA CORPORATION

Inventor： Takayoshi Endo ,  Shunpei Yamaji

IPC: H02J7/00 ,  H01M2/10 ,  H01M2/34 ,  H01M10/42

CPC classification number: H02J7/0031 ,  H01M2/1072 ,  H01M2/348 ,  H01M10/42 ,  H01M2010/4271 ,  H01M2200/103 ,  H02J7/0021 ,  H02J7/0026

Abstract: A battery pack of one aspect of an embodiment of the present disclosure comprises a battery, a control unit, a pair of external terminals, a first current cut-off unit, and a second current cut-off unit. The control unit determines whether the first current cut-off unit and the second current cut-off unit are normal or abnormal when neither charge nor discharge of the battery is performed. When the first current cut-off unit and the second current cut-off unit are both normal, the control unit turns the first current cut-off unit and the second current cut-off unit to an energized state. When at least one of the first current cut-off unit and the second current cut-off unit is abnormal, the control unit turns the first current cut-off unit or the second current cut-off unit to a cut-off state.

Abstract translation: 本公开实施例的一个方面的电池组包括电池，控制单元，一对外部端子，第一电流切断单元和第二电流切断单元。 当不执行电池的充电和放电时，控制单元确定第一电流截止单元和第二电流截止单元是正常还是异常。 当第一电流切断单元和第二电流切断单元都正常时，控制单元将第一电流切断单元和第二电流切断单元转换为通电状态。 当第一电流截止单元和第二电流截止单元中的至少一个异常时，控制单元将第一电流截止单元或第二电流切断单元转换为截止状态。