公开(公告)号：US09583746B2

公开(公告)日：2017-02-28

申请号：US14808090

申请日：2015-07-24

Applicant: MAKITA CORPORATION

Inventor： Tomoyuki Ota ,  Kiyoshi Nishibe ,  Hitoshi Suzuki

IPC: A47L9/00 ,  H01M2/10 ,  H01M10/48 ,  H02J7/00 ,  B25F5/00 ,  H01M6/42 ,  H01M10/0525 ,  H01M10/058

CPC classification number: H01M2/1055 ,  B23B2260/024 ,  B25F5/00 ,  H01M2/10 ,  H01M2/1022 ,  H01M2/1027 ,  H01M2/1033 ,  H01M2/1061 ,  H01M2/34 ,  H01M6/42 ,  H01M10/0525 ,  H01M10/058 ,  H01M10/48 ,  H01M10/488 ,  H01M2200/103 ,  H01M2220/30 ,  H02J7/0021 ,  H02J7/0045 ,  H02J7/0063 ,  H02J2007/004

Abstract: An electric power tool comprises a main body supporting a tool and an electric motor housed in the main body for driving the tool. A plurality of first battery interfaces is configured to removably receive or attach a plurality of first battery packs and to electrically connect the plurality of attached first battery packs in series with the electric motor. A plurality of indicators is configured to communicate information concerning the respective conditions of the plurality of attached first battery packs. The plurality of indicators is arranged such that all of the indicators are simultaneously viewable by a user of the electric power tool.

Abstract translation: 电动工具包括支撑工具的主体和容纳在主体中用于驱动工具的电动机。 多个第一电池接口被配置为可移除地接收或附接多个第一电池组并且将多个附接的第一电池组与电动机串联电连接。 多个指示器被配置为传送关于多个附接的第一电池组的各个状况的信息。 多个指示器被布置成使得所有指示器可以由电动工具的用户同时观看。

公开(公告)号：US09525293B2

公开(公告)日：2016-12-20

申请号：US14369708

申请日：2012-12-25

Applicant: MAKITA CORPORATION

Inventor： Kosuke Ito ,  Hitoshi Suzuki ,  Akira Naito

IPC: H02J7/00 ,  H02J7/02 ,  H02J5/00

CPC classification number: H02J7/0044 ,  H02J5/00 ,  H02J5/005 ,  H02J7/0021 ,  H02J7/0027 ,  H02J7/0045 ,  H02J7/02 ,  H02J7/025 ,  H02J50/10 ,  H02J50/40 ,  H02J50/80 ,  H02J2007/0001 ,  H02J2007/0096

Abstract: A charger (40; 240; 340) charges a battery pack (20) that is detachably attachable to a cordless power tool (12). The charger has at least a first side wall (44b) that at least partially defines a battery pack receiving hole (44; 244) shaped to receive and accommodate the battery pack. A charging output element (62; 362) supplies charging power to the battery pack. The battery pack receiving hole has a lateral cross sectional area that decreases downwardly in the vertical direction of the battery pack receiving hole such that gravity causes the battery pack to be guided to a prescribed position within the battery pack receiving hole. In addition, the charging output element is positioned so as to be proximal to a corresponding charging power input element of the battery pack when the battery pack is disposed in the prescribed position.

Abstract translation: 充电器（40; 240; 340）对可拆卸地附接到无绳电动工具（12）的电池组（20）充电。 充电器至少具有至少部分地限定形状以接收和容纳电池组的电池组接收孔（44; 244）的第一侧壁（44b）。 充电输出元件（62; 362）向电池组提供充电电力。 电池组接收孔具有在电池组接收孔的垂直方向上向下减小的横向横截面积，使得重力使得电池组被引导到电池组接收孔内的规定位置。 此外，当电池组被布置在规定位置时，充电输出元件被定位成靠近电池组的相应的充电电力输入元件。

公开(公告)号：US09490506B2

公开(公告)日：2016-11-08

申请号：US14309124

申请日：2014-06-19

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki

IPC: H01M10/42 ,  H01M2/34 ,  H01M10/48 ,  H02J7/00

CPC classification number: H01M10/425 ,  H01M2/34 ,  H01M10/482 ,  H01M2010/4271 ,  H02J7/0024 ,  H02J7/0063

Abstract: A battery unit in one aspect of an embodiment of the present disclosure includes a plurality of cell assemblies, a positive electrode connection terminal, a negative electrode connection terminal, a plurality of switch sections, a control section, and a simultaneous on-suppression section. When an on-command signal is output from the control section to at least two of the plurality of the switch sections, the simultaneous on-suppression section performs one of enabling the on-command signal to one of the at least two switch sections and disabling the on-command signal to all of the at least two switch sections, so as to suppress the at least two switch sections from being turned on at the same time.

Abstract translation: 本公开实施例的一个方面的电池单元包括多个电池组件，正极连接端子，负极连接端子，多个开关部分，控制部分和同时接通抑制部分。 当从命令信号从控制部分输出到多个开关部分中的至少两个时，同时接通抑制部分执行致命信号到至少两个开关部分之一并禁用 对所述至少两个开关部分的所有指令信号，以便抑制所述至少两个开关部分同时导通。

公开(公告)号：US09467084B2

公开(公告)日：2016-10-11

申请号：US14225669

申请日：2014-03-26

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki ,  Masafumi Noda ,  Masaaki Fukumoto

IPC: H02P7/00 ,  H02P23/00 ,  B25F5/00

CPC classification number: H02P23/0004 ,  B25F5/00

Abstract: A motor-driven appliance system in one aspect of an embodiment of the present disclosure includes a motor-driven appliance having a motor, at least one control circuit, and a communication device. The control circuit is configured to execute a process related to control of the motor-driven appliance. The communication device is configured to communicate with an external device. The control circuit is further configured to switch, when at least one predetermined sleep condition is satisfied, from an active mode in which the control circuit performs a normal operation to a sleep mode in which the control circuit stops part of the normal operation to thereby suppress power consumption; and to switch to the active mode when the communication device receives an external wakeup signal transmitted from the external device while the control circuit is in the sleep mode.

Abstract translation: 本公开的实施例的一个方面的电动机具系统包括具有电动机，至少一个控制电路和通信装置的电动机具。 控制电路被配置为执行与电动机构的控制有关的处理。 通信设备被配置为与外部设备进行通信。 控制电路还被配置为当从控制电路执行正常操作的活动模式到达至少一个预定的睡眠状态时，控制电路停止正常操作的一部分的休眠模式，从而抑制 能量消耗; 并且当控制电路处于睡眠模式时，当通信设备接收到从外部设备发送的外部唤醒信号时，切换到活动模式。

公开(公告)号：US11955874B2

公开(公告)日：2024-04-09

申请号：US17615376

申请日：2020-04-24

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki

IPC: H02K7/14 ,  B25F5/00 ,  H02P27/06

CPC classification number: H02K7/145 ,  B25F5/00 ,  H02P27/06

Abstract: An electric powered work machine includes an inverter circuit, a power-source-side switching element, a power-source-side resistor, at least one circuit-side resistor, and a fault determiner. The power-source-side switching element is arranged between a direct-current power source and the inverter circuit. The power-source-side resistor is connected in parallel to the power-source-side switching element. The circuit-side resistor is connected to the inverter circuit in such a state that electrical conduction is possible between a positive side and a negative side of the direct-current power source in the inverter circuit in a case where semiconductor switching elements in the inverter circuit are all OFF. The fault determiner determines whether the switching elements are short-circuited based on a voltage at a connection point between the power-source-side switching element and the inverter circuit.

公开(公告)号：US11926031B2

公开(公告)日：2024-03-12

申请号：US17418595

申请日：2019-12-20

Applicant: MAKITA CORPORATION

Inventor： Akihiro Nakamoto ,  Hitoshi Suzuki

IPC: H02P23/20 ,  B25F5/00 ,  H02P6/24

CPC classification number: B25F5/00 ,  H02P6/24

Abstract: An electric work machine includes a motor, a manipulator, a first switch, a second switch, and a control circuit. The manipulator is on-operated or off-operated by a user of the electric work machine. Each of the first switch and the second switch is turned on or off in response to the manipulator being on-operated or off-operated. The control circuit executes a motor control process in accordance with a computer program. The control circuit receives first switch information from the first switch, and receives second switch information from the second switch. The motor control process outputs a drive command for driving the motor in response to the first switch information and the second switch information indicating that the manipulator is on-operated.

公开(公告)号：US11897339B2

公开(公告)日：2024-02-13

申请号：US17856340

申请日：2022-07-01

Applicant: MAKITA CORPORATION

Inventor： Kunihisa Shima ,  Hitoshi Suzuki ,  Ryo Umemoto

IPC: B60L15/30 ,  B62B5/00 ,  B60L3/00 ,  B60L15/20 ,  H02P5/74 ,  H02P3/22

CPC classification number: B60L15/2009 ,  B62B5/0036 ,  H02P3/22 ,  H02P5/74 ,  B60L2240/421

Abstract: A cart may include: a driving wheel; a motor configured to rotate the driving wheel; a motor drive circuit configured to drive the motor; a motor brake circuit configured to electrically brake the motor; a rotation speed sensor configured to detect a rotation speed of the motor; and a control device configured to control the motor via the motor drive circuit and the motor brake circuit based on a target rotation speed of the motor and the rotation speed detected by the rotation speed sensor. The motor brake circuit may include an electronically variable resistance element configured to operate in a linear mode and a switching mode in response to a control input signal. The motor brake circuit may be configured to operate the electronically variable resistance element in the linear mode when braking the motor.

公开(公告)号：US11571757B2

公开(公告)日：2023-02-07

申请号：US17582647

申请日：2022-01-24

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki

IPC: B23D59/00 ,  B25F5/00 ,  A47L9/28 ,  B24B23/02 ,  B24B55/00 ,  H01Q1/12 ,  H05K3/36 ,  A47L7/00 ,  B23Q11/00 ,  B24B55/10 ,  G08C17/02

Abstract: A dust collector in one aspect of the present invention comprises a dust collection portion, a communication portion, and an interlock operation control portion. When the communication portion receives an interlock command transmitted from an electric working machine, the interlock operation control portion makes the dust collection portion operate interlocking with the electric working machine. The interlock operation control portion includes a storage portion, in which identification information specific to the electric working machine with which the dust collection portion is to be made to perform the interlock operation is stored.

公开(公告)号：US10994351B2

公开(公告)日：2021-05-04

申请号：US16807584

申请日：2020-03-03

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki

IPC: B23D59/00 ,  B25F5/00 ,  A47L9/28 ,  B24B23/02 ,  B24B55/00 ,  B23Q11/00 ,  B24B55/10 ,  G08C17/02

Abstract: A dust collector in one aspect of the present invention comprises a dust collection portion, a communication portion, and an interlock operation control portion. When the communication portion receives an interlock command transmitted from an electric working machine, the interlock operation control portion makes the dust collection portion operate interlocking with the electric working machine. The interlock operation control portion includes a storage portion, in which identification information specific to the electric working machine with which the dust collection portion is to be made to perform the interlock operation is stored.

公开(公告)号：US20200343744A1

公开(公告)日：2020-10-29

申请号：US16923347

申请日：2020-07-08

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 wireless communicator is attached to or accommodated within the battery pack housing. The wireless communicator is configured to wirelessly communicate with an external device using radio waves while the power tool interface of the battery pack is physically and electrically connected to the battery pack interface of the hand-held power tool.