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公开(公告)号：US20220167544A1
公开(公告)日：2022-06-02
申请号：US17437207
申请日：2020-02-18
发明人： Shota TANABE , Nobuo YAMAZAKI , Jun FUKANO
摘要： A work machine includes: a pair of drive wheels that is either front wheels or rear wheels; a pair of non-driving wheels that is the other of the front wheels and the rear wheels; a work device disposed between the front wheels and the rear wheels; a machine body; and a control device including an automatic turn-execution unit configured to execute an automatic turn in a U shape. The automatic-turn execution unit is configured to execute: a gentle turn operation in which the work machine makes a gentle turn; and a counter-rotation turn operation in which the work machine makes a counter-rotation turn after the gentle turn operation.
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公开(公告)号：US20190269067A1
公开(公告)日：2019-09-05
申请号：US16342118
申请日：2017-11-16
发明人： Jun FUKANO , Masato TAKEDA , Keisuke MURAOKA
摘要： To properly determine a state in which driving of the work unit should be prohibited in power equipment, the power equipment (1) includes: a main body (2); a work unit provided on the main body; a work motor (8) that drives the work unit; a tilt angle detector (41) that detects a tilt angle of the main body; and a control unit (10) that drive-controls the work motor, wherein the control unit performs prohibition control to prohibit driving of the work motor when the tilt angle becomes greater than or equal to a predetermined tilt angle determination value and a change rate of the tilt angle becomes greater than or equal to a predetermined change rate determination value.
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公开(公告)号：US20210289699A1
公开(公告)日：2021-09-23
申请号：US16342487
申请日：2017-11-16
发明人： Jun FUKANO , Masato TAKEDA , Keisuke MURAOKA
摘要： Walk-behind power equipment includes: a main body including front and rear wheels; a work unit provided on the main body; a work motor that drives the work unit; a travel motor that rotates the rear wheel; a handle extending from the main body rearward and upward; a posture detector that detects a rearward tilted state of the main body in which the rear wheel is in contact with a ground and the front wheel is not; and a control unit that drive-controls the work motor and travel motor, wherein when the main body is in the rearward tilted state, the control unit causes a rotational speed of the travel motor to be reduced compared to when the front wheel is in contact with the ground, or causes a rotational speed of the work motor to be reduced compared to when the front wheel is in contact with the ground.
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公开(公告)号：US20180152121A1
公开(公告)日：2018-05-31
申请号：US15819695
申请日：2017-11-21
发明人： Jun FUKANO , Masato TAKEDA , Keisuke MURAOKA
CPC分类号： H02P5/00 , A01D34/006 , A01D34/69 , A01D34/78 , A01D69/02 , A01D2101/00 , B60L11/1861 , B60L11/1864 , B60L2200/40 , B60L2240/421 , H02J7/0063 , Y02T10/646 , Y02T10/7005 , Y02T10/7044 , Y02T10/7061
摘要： Electric power equipment such as a lawn mower is provided with a travel unit driven by a travel motor for propelling the equipment, a work unit driven by a work motor to perform prescribed work such as cutting grass as the equipment travels, a battery for powering the motors, and a control unit which is configured to lower a rotational speed of the travel motor according to a decrease in the voltage or the remaining charge of the battery.
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公开(公告)号：US20190269068A1
公开(公告)日：2019-09-05
申请号：US16342483
申请日：2017-11-16
发明人： Jun FUKANO , Masato TAKEDA , Keisuke MURAOKA
摘要： Walk-behind power equipment includes: a main body provided with at least one front wheel and left and right rear wheels and a work unit; travel motors provided for the respective rear wheels; a handle extending from the main body rearward and upward; at least one of a tilt angle detector that detects a tilt angle of the main body and a load detector that detects a downward load applied to the handle; a yaw rate detector that detects a yaw rate; and a control unit that drive-controls the travel motors. The control unit determines whether the main body is in a rearward tilted state based on the tilt angle or the downward load, and if it is determined that the main body is not in the rearward tilted state, performs straight-line travel control to set a rotational speed difference between the travel motors to reduce the yaw rate.
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公开(公告)号：US20180146616A1
公开(公告)日：2018-05-31
申请号：US15815994
申请日：2017-11-17
发明人： Jun FUKANO , Masato TAKEDA , Keisuke MURAOKA
摘要： Electric power equipment such as a lawn mower is provided with a travel unit driven by a travel motor for propelling the equipment, a work unit driven by a work motor to perform prescribed work such as cutting grass as the equipment travels, and a control unit configured to decrease a rotational speed of the travel motor in response to an increase in a load applied to the work motor, and to increase the rotational speed of the travel motor in response to a decrease in a load applied to the work motor.
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