公开(公告)号：US20250072318A1

公开(公告)日：2025-03-06

申请号：US18797646

申请日：2024-08-08

Applicant: MAKITA CORPORATION

Inventor： Tatsuya YOSHIKAWA ,  Genki TOYODA

IPC: A01D34/00 ,  A01D101/00 ,  G05D1/244 ,  G05D1/85 ,  G05D105/15 ,  G05D107/20

Abstract: A working robot may include a body, a movement unit, a working unit, a magnetic sensor supported by the body, and a control unit. The control unit may be configured to execute a working operation of causing the working unit to work while causing the movement unit to move the body. The control unit may execute, during the working operation, an operation-suspending process of suspending the working operation when a predetermined operation-suspending condition is satisfied, a first magnetic field searching process of causing the movement unit to move the body straight in a first linear direction by a first distance and assessing whether a wire magnetic field is detected by the magnetic sensor after the operation-suspending process, and an operation-resuming process of resuming the working operation when the wire magnetic field is detected by the magnetic sensor.

公开(公告)号：US20250117023A1

公开(公告)日：2025-04-10

申请号：US18901958

申请日：2024-09-30

Applicant: MAKITA CORPORATION

Inventor： Tatsuya YOSHIKAWA ,  Hirokatsu YAMAMOTO ,  Masahiro KOJIMA ,  Genki TOYODA

IPC: G05D1/661 ,  B60L53/36 ,  H02J7/00

Abstract: The working robot may include: a movement unit configured to move the working robot; a movement motor configured to drive the movement unit; a battery; a control unit configured to control the movement motor; and a robot power receiver. The charging station may include: a station power transmitter; and a station plate placed on a ground. When the working robot is docked with the charging station and in an unchargeable state in which charging to the battery is unable to be started, the control unit may execute a docking retry process to move the working robot by the movement unit and dock the working robot again with the charging station. While the working robot is moving during the docking retry process, at least a part of the working robot may overlap the station plate as viewed in a direction perpendicular to the ground.

公开(公告)号：US20250113770A1

公开(公告)日：2025-04-10

申请号：US18907999

申请日：2024-10-07

Applicant: MAKITA CORPORATION

Inventor： Tatsuya YOSHIKAWA ,  Hirokatsu Yamamoto ,  Genki Toyoda

IPC: A01D34/00 ,  A01D101/00

Abstract: A working robot may be configured to move and work autonomously. The working robot may include a robot body including a base and a bumper supported by the base, a working unit supported by the base, a movement mechanism configured to move the base, a movement motor configured to drive the movement mechanism, a first detection unit configured to detect a force that the bumper receives or displacement of the bumper relative to the base, a second detection unit configured to detect an angular velocity of the base or a state of the movement motor, and a control unit. The control unit may be configured to determine, based on a detection result detected by the first detection unit and a detection result detected by the second detection unit, whether the movement of the working robot is hindered by an obstacle.

公开(公告)号：US20250024775A1

公开(公告)日：2025-01-23

申请号：US18758368

申请日：2024-06-28

Applicant: MAKITA CORPORATION

Inventor： Tatsuya YOSHIKAWA ,  Hirokatsu Yamamoto

IPC: A01D34/00 ,  A01D101/00

Abstract: The working robot may include a working mechanism, a movement mechanism, a working motor, a movement motor, a battery configured to supply power to the working motor and the movement motor, a voltage detection unit configured to detect a voltage value of the battery, and a control unit. The control unit may be configured to obtain a detection value detected by the voltage detection unit while a target motor is in operation as a first-step voltage value, and then stop the target motor and obtain a detection value detected by the voltage detection unit while the target motor is not in operation as a second-step voltage value, and then determine whether to return the working robot to a charging station or not based on the first-step voltage value and the second-step voltage value. The target motor may be at least one of the working motor and the movement motor.

公开(公告)号：US20250117019A1

公开(公告)日：2025-04-10

申请号：US18907994

申请日：2024-10-07

Applicant: MAKITA CORPORATION

Inventor： Tatsuya YOSHIKAWA ,  Hirokatsu YAMAMOTO

IPC: G05D1/435

Abstract: A working robot may include a robot body, a movement unit, a working unit supported by the robot body, a height adjustment unit configured to change a height level of the working unit relative to the robot body, and a control unit. The control unit may be configured to execute an autonomous operation including a working process of causing the working unit to work while moving the robot body by the movement unit and a height adjustment process of causing the height adjustment unit to adjust the height level of the working unit relative to the robot body in multiple steps. The working robot may be configured to be switched between a first state in which the control unit executes the height adjustment process in the autonomous operation and a second state in which the control unit does not execute the height adjustment process in the autonomous operation.

公开(公告)号：US20250076885A1

公开(公告)日：2025-03-06

申请号：US18800597

申请日：2024-08-12

Applicant: MAKITA CORPORATION

Inventor： Tatsuya YOSHIKAWA ,  Hirokatsu Yamamoto ,  Masahiro Kojima ,  Genki Toyoda

IPC: G05D1/244 ,  A01D34/00 ,  B60L53/36 ,  G05D1/661 ,  G05D105/15

Abstract: An autonomous movement system may include: a working robot configured to perform an operation while moving autonomously in a working area; a charging station configured to charge the working robot; a boundary wire defining the working area; and a station wire disposed at the charging station and electrically connected to the boundary wire. The working robot may include: a magnetic detecting unit configured to detect a magnetic field generated by the boundary wire and a magnetic field generated by the station wire; and a control unit configured to detect the station wire based on a detection result by the magnetic detecting unit. The charging station may include: a charging terminal configured to be electrically connected to the working robot; and a signal generator configured to supply an identical electric signal to the boundary wire and the station wire.