公开(公告)号：US10099392B2

公开(公告)日：2018-10-16

申请号：US15221253

申请日：2016-07-27

申请人： MAKITA CORPORATION

发明人： Hidekazu Suda ,  Motohiro Omura

IPC分类号： B26B15/00 ,  H02P7/03 ,  H02P3/08 ,  H02K7/06 ,  A01G3/037

摘要： Electric scissors comprise a motor, a movable blade, a transmission mechanism, an operation device, an operation signal output device, a control device, a drive circuit, and a forced stop device. The forced stop device is configured to stop the motor when an abnormal state is present in which the value of the operation signal output from the operation signal output device is a value determined in the control device to rotate the motor in a specific rotation direction out of the first and the second rotation directions or to stop the motor, and in which the motor is rotating in a direction opposite to the specific rotation direction.

公开(公告)号：US12057797B2

公开(公告)日：2024-08-06

申请号：US17903580

申请日：2022-09-06

申请人： MAKITA CORPORATION

发明人： Hidekazu Suda

IPC分类号： H02P3/18 ,  B60L7/00 ,  B60L50/60 ,  H02P3/04 ,  H02P23/14

CPC分类号： H02P3/18 ,  B60L7/00 ,  B60L50/60 ,  H02P23/14 ,  B60L2200/36

摘要： An electric-powered wheelbarrow in one aspect of the present disclosure includes a motor, a wheel, an electromagnetic brake, a control circuit, a signal-processing circuit, and a drive circuit. The electromagnetic brake includes an electromagnetic coil. The electromagnetic brake (i) applies a braking force to the wheel in response to the electromagnetic coil being de-energized and (ii) releases the braking force from the wheel in response to the electromagnetic coil being energized. The control circuit outputs a first control signal and a second control signal. The signal-processing circuit receives the first and second control signals to thereby output a deactivating signal. The drive circuit receives the deactivating signal and delivers an excitation current to the electromagnetic coil.

公开(公告)号：US11539314B2

公开(公告)日：2022-12-27

申请号：US16462675

申请日：2017-11-22

申请人： MAKITA CORPORATION

发明人： Takeshi Nishimiya ,  Hidekazu Suda

IPC分类号： H02P6/16 ,  H02P6/12 ,  H02P6/24 ,  B23D45/16 ,  B23D47/12 ,  B23D59/00 ,  B23Q11/00 ,  B27G19/04 ,  H02P6/30

摘要： An electric working machine in one aspect of the present disclosure includes: a motor; a driver to drive the motor; a first control circuit; and a second control circuit. The first control circuit controls the driver such that the motor rotates in a set rotation direction. The second control circuit is provided separately from the first control circuit. The second control circuit detects a rotation direction of the motor and performs an abnormality handling process to stop rotation of the motor in response to a situation where the detected rotation direction is reverse to the set rotation direction.

公开(公告)号：US09793730B2

公开(公告)日：2017-10-17

申请号：US14819980

申请日：2015-08-06

申请人： MAKITA CORPORATION

发明人： Hidekazu Suda ,  Takuya Kusakawa

IPC分类号： H02J7/00 ,  H02J50/10

CPC分类号： H02J7/0063 ,  H02J50/10 ,  H02J2007/0095

摘要： A motor-driven appliance comprises a drive source for driving a tool, a control unit, a power supply unit, a switch unit, a receiving unit, a supply signal output unit, and a data communication unit. The power supply unit generates a control voltage for operating the control unit. The switch unit supplies the control voltage to the control unit and stops supply of the control voltage to the control unit. The control voltage is supplied to the control unit while a given supply signal is inputted to the switch unit. The supply signal output unit outputs, to the switch unit, the supply signal for supplying the control voltage to the control unit when the receiving unit receives the electromagnetic wave while the supply of the control voltage to the control unit is stopped. The data communication unit outputs, to the control unit, the data contained in the electromagnetic wave.

公开(公告)号：US09634583B2

公开(公告)日：2017-04-25

申请号：US14612626

申请日：2015-02-03

申请人： MAKITA CORPORATION

发明人： Hidekazu Suda

IPC分类号： H02P3/02 ,  H02P29/024

CPC分类号： H02P3/02 ,  H02P29/0241

摘要： A motor driven appliance in one aspect of embodiments of the present disclosure comprises a motor, a first switching element, a second switching element, an operation unit, a control unit, and a monitoring unit. The first and second switching elements are provided on a current path from a power source to the motor, and are connected in series to each other. The monitoring unit monitors an operating state of a protection function by the control unit, and, when the protection function is activated, outputs an OFF signal for turning off the second switching element.