-
公开(公告)号：US20200212837A1
公开(公告)日：2020-07-02
申请号：US16715560
申请日：2019-12-16
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka ICHIKAWA , Akihiro NAKAMOTO
IPC: H02P29/024 , H02P27/06 , A01G3/053 , A01G3/06
Abstract: An electric working machine in one aspect of the present disclosure includes two or more circuits and a control circuit. The control circuit executes two or more diagnoses one by one in order. The diagnoses at least include a first diagnosis and a second diagnosis. The first diagnosis diagnoses a first circuit. The second diagnosis diagnoses a second circuit. The control circuit executes the first diagnosis or the second diagnosis at a first diagnosis timing. The control circuit executes the first diagnosis or the second diagnosis at a second diagnosis timing. The second diagnosis timing follows the first diagnosis timing.
-
公开(公告)号：US20220247279A1
公开(公告)日：2022-08-04
申请号：US17624775
申请日：2020-06-17
Applicant: MAKITA CORPORATION
Inventor： Akihiro NAKAMOTO
Abstract: An electric powered work machine in one aspect of the present disclosure includes a motor, a current-carrying path, a switching circuit, a circuit board, a metal case, and a heat radiation sheet. The circuit board includes a first surface, a second surface, a first hole group, a board conductive line, and a circuit arrangement area.
-
公开(公告)号：US20210399668A1
公开(公告)日：2021-12-23
申请号：US17462820
申请日：2021-08-31
Applicant: MAKITA CORPORATION
Inventor： Hitoshi SUZUKI , Akihiro NAKAMOTO
Abstract: An electric working machine in one aspect of the present disclosure includes a driving device, a controller, a control power source, and an operation state determiner. The control power source includes a first converter and a second converter. The control power source transitions to a first conversion state when the operation state determiner determines that the controller is in a control operation state. The control power source in the first conversion state supplies a first control current to the controller. The control power source transitions to a second conversion state when the operation state determiner determines that the controller is in a low power operation state. The control power source in the second conversion state (i) stops operation of the first converter, and (ii) supplies a second control current to the controller.
-
公开(公告)号：US20220072694A1
公开(公告)日：2022-03-10
申请号：US17418595
申请日：2019-12-20
Applicant: MAKITA CORPORATION
Inventor： Akihiro NAKAMOTO , Hitoshi SUZUKI
Abstract: An electric work machine in one aspect of the present disclosure 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.
-
5.发明申请公开(公告)号：US20200328712A1
公开(公告)日：2020-10-15
申请号：US16832443
申请日：2020-03-27
Applicant: MAKITA CORPORATION
Inventor： Hitoshi SUZUKI , Akihiro NAKAMOTO
Abstract: An electric working machine in one aspect of the present disclosure includes a driving device, a controller, a control power source, and an operation state determiner. The control power source includes a first converter and a second converter. The control power source transitions to a first conversion state when the operation state determiner determines that the controller is in a control operation state. The control power source in the first conversion state supplies a first control current to the controller. The control power source transitions to a second conversion state when the operation state determiner determines that the controller is in a low power operation state. The control power source in the second conversion state (i) stops operation of the first converter, and (ii) supplies a second control current to the controller.
-
Patent Agency Ranking
公开(公告)号：US20200212838A1
公开(公告)日：2020-07-02
申请号：US16715813
申请日：2019-12-16
Applicant: MAKITA CORPORATION
Inventor： Akihiro NAKAMOTO , Hitoshi SUZUKI
Abstract: An electric working machine in one aspect of the present disclosure includes a motor, an information output circuit, a control circuit, and a drive stop circuit. The information output circuit outputs state information that indicates a state of the electric working machine. The control circuit executes a motor control process in accordance with a computer program. The drive stop circuit executes a motor stop operation. The motor stop operation includes disabling a permission to drive the motor by the control circuit to stop the motor in response to the state information indicating that the motor should be stopped. The motor stop operation is implemented by hardware.
-
7.发明申请公开(公告)号：US20200169148A1
公开(公告)日：2020-05-28
申请号：US16693623
申请日：2019-11-25
Applicant: MAKITA CORPORATION
Inventor： Akihiro NAKAMOTO
IPC: H02K11/33 , H01L23/40 , H01L25/07 , H05K1/18 , H02K11/00 , H02K11/25 , H02K9/22 , A01D34/78 , A01D34/68
Abstract: An electric working machine includes: a motor; a semiconductor element that is provided in a current path to the motor and completes or interrupts the current path; a circuit board on which the semiconductor element is mounted, a control circuit that turns on and off the semiconductor element to control energization to the motor being assembled to the circuit board; and a heat sink for dissipating heat from the semiconductor element. The semiconductor element is attached to the heat sink via a metal-based board.
-
公开(公告)号：US20200067337A1
公开(公告)日：2020-02-27
申请号：US16531519
申请日：2019-08-05
Applicant: MAKITA CORPORATION
Inventor： Akihiro NAKAMOTO , Hitoshi SUZUKI
Abstract: A voltage supplier in one aspect of the present disclosure includes a first voltage generator, a second voltage generator, a first switcher, a second switcher, a first booster, and a second booster. The first booster boosts a voltage lower than a first switching drive voltage to thereby generate the first switching drive voltage, and supplies the first switching drive voltage to the first switcher on a first supply path. The second booster boosts a voltage lower than a second switching drive voltage to thereby generate the second switching drive voltage, and supplies the second switching drive voltage to the second switcher on a second supply path.
-
公开(公告)号：US20170302211A1
公开(公告)日：2017-10-19
申请号：US15484479
申请日：2017-04-11
Applicant: MAKITA CORPORATION
Inventor： Akihiro NAKAMOTO , Itsuku KATO , Yuki KAWAI
Abstract: An electric working machine of an example of the present disclosure includes: a motor; a power supply portion; a controller; and a voltage detector. The power supply portion generates a DC voltage to drive the motor by rectifying an AC voltage supplied from an AC power source and smoothing by a capacitor. The controller controls energization of the motor. The voltage detector detects the AC voltage. The controller is configured to interrupt the energization when the voltage detector does not detect the AC voltage.
-
公开(公告)号：US20230158523A1
公开(公告)日：2023-05-25
申请号：US17991060
申请日：2022-11-21
Applicant: MAKITA CORPORATION
Inventor： Akihiro NAKAMOTO , Masatoshi ITO , Ryoji ZAMA , Yuki KOIDE
CPC classification number: B05B7/2437 , B05B7/2416 , B05B12/002 , B05B12/087 , B05B7/2475
Abstract: A mist blower in one aspect of the present disclosure includes an air blower, an air feed pipe, a tank, a liquid feed pipe, a nozzle, a first electromagnetic valve, a controller, and a first manual switch. The first electromagnetic valve (i) opens the liquid feed pipe in response to the first electromagnetic valve being activated and (ii) closes the liquid feed pipe in response to the first electromagnetic valve being deactivated. The controller activates or deactivates the air blower and the first electromagnetic valve. The first manual switch (i) is manually moved by a user of the mist blower and (ii) commands the controller to activate or deactivate the air blower based on a movement of the first manual switch.
-
-
-
-
-
-
-
-
-
Search Results
12
records
(took 0.022 seconds)
