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1.发明申请公开(公告)号：US20180099394A1
公开(公告)日：2018-04-12
申请号：US15724766
申请日：2017-10-04
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka ICHIKAWA , Hirokatsu YAMAMOTO , Ryo UMEMOTO , Kunihisa SHIMA
CPC classification number: B25D16/006 , B25D17/043 , B25D17/24 , B25D2211/068 , B25D2216/0015 , B25D2216/0023 , B25D2216/0038 , B25D2216/0084 , B25D2222/72 , B25D2250/121 , B25D2250/201 , B25D2250/221 , B25D2250/265
Abstract: An electric power tool according to one aspect of the present disclosure includes a main body, a motor, a tool holder configured to hold a tool bit, a hammer, a motion converter, a rotation transmitter, a first load detector, a second load detector, and a motor controller. The first load detector detects, based on information indicating a drive state of the motor, a load imposed from a work piece to the tool bit. The second load detector detects, based on information indicating a behavior of the main body, a load imposed from the work piece to the tool bit. The motor controller sets an upper limit of rotational speed of the motor to a predetermined no-load rotational speed in response to no-load on the tool bit being detected by both the first load detector and the second load detector.
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公开(公告)号：US20170129090A1
公开(公告)日：2017-05-11
申请号：US15341164
申请日：2016-11-02
Applicant: MAKITA CORPORATION
Inventor： Hirokatsu YAMAMOTO
CPC classification number: B25F5/00 , G06F9/4812 , G08C17/02 , G08C2201/10 , H02P6/00
Abstract: An electric working machine including a motor, an electric-power supply unit, a control unit, and a signal processing unit. The signal processing unit performs a signal control process for sending and receiving a signal to and from the signal processing unit and an external device, and receives at least a stop-command signal from the external device. The control unit stops the electric power supply to the motor in a case where the stop-command signal is received at the signal processing unit when the electric power supply from the electric-power supply unit to the motor is in process.
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公开(公告)号：US20160151845A1
公开(公告)日：2016-06-02
申请号：US14904240
申请日：2014-03-31
Applicant: MAKITA CORPORATION
Inventor： Hirokatsu YAMAMOTO , Takaaki OSADA , Yasushi OGURA
CPC classification number: B23D59/001 , B23D49/16 , B23D49/162 , B23D51/16
Abstract: A reciprocating electric power tool in one aspect of the present invention includes an attachment unit, a motor, a power transmission unit, and a controller. The controller is configured to operate the motor at a first speed when activated; to operate the motor at a second speed that is higher than the first speed when a first condition is satisfied after activation; and, to operate the motor at a third speed that is higher than the second speed when a second condition is satisfied after the first condition is satisfied.
Abstract translation: 本发明的一个方面的往复式电动工具包括安装单元，马达，动力传递单元和控制器。 控制器被配置为在激活时以第一速度操作电动机; 以在激活后满足第一条件时以比第一速度高的第二速度操作电动机; 并且在满足第一条件之后满足第二条件时，以高于第二速度的第三速度操作电动机。
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公开(公告)号：US20230027921A1
公开(公告)日：2023-01-26
申请号：US17855367
申请日：2022-06-30
Applicant: MAKITA CORPORATION
Inventor： Ryo UMEMOTO , Hirokatsu YAMAMOTO
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 control device configured to control the motor via the motor drive circuit and the motor brake circuit so that a travelling speed of the cart becomes equal to or lower than an upper limit travelling speed, and a temperature sensor configured to detect a temperature of the motor brake circuit. The control device may be configured to change the upper limit travelling speed to a second upper limit travelling speed lower than the first upper limit travelling speed when the upper limit travelling speed is a first upper limit travelling speed and the temperature detected by the temperature sensor exceeds a first predetermined temperature.
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公开(公告)号：US20230013915A1
公开(公告)日：2023-01-19
申请号：US17855410
申请日：2022-06-30
Applicant: MAKITA CORPORATION
Inventor： Ryo UMEMOTO , Hirokatsu YAMAMOTO , Shingo KAMINOKADO
Abstract: The cart may include: a driving wheel; a motor configured to rotate the driving wheel; a motor drive circuit configured to drive the motor; a control device configured to control the motor via the motor drive circuit so that a travelling speed of the cart becomes equal to or lower than an upper limit travelling speed; and an operation member arranged on the cart and configured to receive an operation by a user. The cart may be configured to operate in a manual mode where the motor is driven when the operation member is on and the motor is stopped when the operation member is off, and in an automatic mode were the motor is driven regardless of whether the operation member is on or off. The upper limit travelling speed in the automatic mode may be set lower than the upper limit travelling speed in the manual mode.
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Patent Agency Ranking
公开(公告)号：US20180297186A1
公开(公告)日：2018-10-18
申请号：US15946029
申请日：2018-04-05
Applicant: MAKITA CORPORATION
Inventor： Hitoshi IIDA , Masanori FURUSAWA , Hirokatsu YAMAMOTO , Ryo UMEMOTO , Yoshinori SASAKI , Akira NAITO
Abstract: An impact tool includes a motor, a driving mechanism, and a vibration sensor. The driving mechanism is configured to perform a hammering operation of linearly driving a tool accessory along an impact-axis by power of the motor. The impact-axis extends in a front-rear direction of the impact tool. The vibration sensor is configured to detect vibrations. The vibration sensor is disposed such that the vibration sensor is capable of detecting vibrations of a first frequency among vibrations caused in the impact tool, and such that transmission of vibrations of a second frequency to the vibration sensor is suppressed. The vibrations of the first frequency result from the hammering operation. The second frequency is different from the first frequency.
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7.发明申请公开(公告)号：US20180038546A1
公开(公告)日：2018-02-08
申请号：US15660372
申请日：2017-07-26
Applicant: MAKITA CORPORATION
Inventor： Takeshi NISHIMIYA , Hirokatsu YAMAMOTO
CPC classification number: F16P3/00 , B24B23/028 , B25F5/00
Abstract: An electric power tool in one aspect of the present disclosure comprises a main body, a motor, a driver, a detector, and a kickback determiner. The kickback determiner determines that the main body is kicked back from a workpiece when an attitude change amount of the main body detected by the detector exceeds a preset kickback determination threshold during driving of the motor by the driver.
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公开(公告)号：US20210078153A1
公开(公告)日：2021-03-18
申请号：US17018079
申请日：2020-09-11
Applicant: MAKITA CORPORATION
Inventor： Hikaru SUNABE , Hirokatsu YAMAMOTO , Takaaki OSADA
Abstract: An electric working machine in one aspect of the present disclosure includes an output shaft, a motor, a housing, an acceleration detector, a twisted motion detector, a reference level changer, and a motor controller. The acceleration detector detects an acceleration of the housing in a circumferential direction of the output shaft. The twisted motion detector detects a twisted motion of the housing based on a reference level and the acceleration detected. The reference level determines that the housing is twisted. The reference level changer changes the reference level based on a rotating motion of the output shaft.
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公开(公告)号：US20180272511A1
公开(公告)日：2018-09-27
申请号：US15928788
申请日：2018-03-22
Applicant: MAKITA CORPORATION
Inventor： Masahiko SAKO , Takaaki OSADA , Hirokatsu YAMAMOTO
IPC: B25B21/02 , B25B23/147
CPC classification number: B25B21/02 , B25B23/1405 , B25B23/1475
Abstract: An impact fastening tool may include a motor; a hammer configured to be rotationally driven by the motor; an anvil configured to he hit in a rotational direction by the hammer; a signal obtainer configured to obtain a variable signal. which varies in accordance with a hit to the anvil by the hammer; and a seating determiner configured to determine whether or not a fastener has been seated based on the variable signal obtained by the signal obtainer, wherein the seating determiner is configured to determine whether or not the fastener has been seated based on a signal component of the variable signal obtained by the signal obtainer, the signal component corresponding to a predetermined reference frequency.
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公开(公告)号：US20160305438A1
公开(公告)日：2016-10-20
申请号：US15087273
申请日：2016-03-31
Applicant: MAKITA CORPORATION
Inventor： Hirokatsu YAMAMOTO , Yuki KAWAI , Makoto TAKAHASHI
IPC: F04D27/00 , F04D29/28 , F04D29/32 , A47L5/14 , F04D29/52 , F04D29/44 , F04D29/54 , F04D25/06 , F04D29/42
CPC classification number: F04D27/004 , A01G20/47 , F04D25/0613 , F04D25/0673 , F04D25/0693 , F04D25/166 , F04D29/4226
Abstract: A fluid aparatus includes an apparatus main body that includes a motor and a fan driven by the motor, a frame on which the apparatus main body is mounted, a pipe that is detachably attached to the apparatus main body to discharge and introduce a fluid by rotation of the fan, an operation unit that is provided to the pipe to input an operation command for the apparatus main body by operation from outside, a cable that transmits a signal between the operation unit and the apparatus main body, and a connecting portion that is provided to the cable to separably couple the operation unit and the apparatus main body to each other.
Abstract translation: 流体装置包括：设备主体，包括电动机和由电动机驱动的风扇;安装设备主体的框架;可拆卸地附接到设备主体的管道，用于通过旋转排出和引入流体 所述操作单元设置在所述管道上，以从外部操作输入用于所述装置主体的操作命令，在所述操作单元和所述装置主体之间传输信号的电缆和连接部分， 提供给电缆以使操作单元和设备主体彼此可分离地联接。
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