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公开(公告)号：US20210315162A1
公开(公告)日：2021-10-14
申请号：US17226225
申请日：2021-04-09
发明人： Kohei OGURA , Koji KIYOOKA , Hidetaka YAMANAMI , Kenji OGATA , Yuya KUROIWA
摘要： A control system of a lawn mowing vehicle, includes at least one continuously variable transmission drivingly connected to two left and right wheels, a revolution speed detection unit, an acceleration instruction unit, a parking brake instruction sensor, a lawn mower, and a control device. The control device, during the drive of the lawn mower, stops the drive of the lawn mower after the revolution speed of each of the two wheels or the revolution speed of the at least one continuously variable transmission has become zero (0) or within a predetermined range near zero (0), and during stop control of the lawn mower, drives the lawn mower when a target revolution speed, issued by the acceleration instruction unit, of the two wheels or of the at least one continuously variable transmission is not zero (0) and the operation of the parking brake is not instructed.
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公开(公告)号：US20210316785A1
公开(公告)日：2021-10-14
申请号：US17226197
申请日：2021-04-09
发明人： Kohei OGURA , Koji KIYOOKA , Hidetaka YAMANAMI , Kenji OGATA , Yuya KUROIWA
摘要： To provide a vehicle including a left continuously variable transmission connected to a left wheel and a right continuously variable transmission connected to a right wheel, at least one operation tool operated to instruct driving of the left wheel and the right wheel, a control device configured to control driving of the left continuously variable transmission and the right continuously variable transmission according to an operation of the at least one operation tool, and a turn operation tool provided on each of the at least one operation tool. If the turn operation tool is operated, the control device controls the left continuously variable transmission and the right continuously variable transmission so that the vehicle is turned to a side of the operated turn operation tool.
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公开(公告)号：US20240016081A1
公开(公告)日：2024-01-18
申请号：US18330556
申请日：2023-06-07
发明人： Fumiaki ITO , Kohei OGURA
IPC分类号： A01D34/00
CPC分类号： A01D34/006 , A01D2101/00
摘要： [Problem] In a control system for a work vehicle, safety when a backward work permission switch is operated OFF is further enhanced.
[Solution] A control system for a work vehicle includes a control device that controls driving of a work implement in accordance with an operation of a work operation unit and forcibly stops the work implement when the work vehicle travels backward, and a backward work permission switch that disables forced stopping of the work implement at a start of backward traveling of the work vehicle by an ON operation performed by a user. In a case where the backward work permission switch is operated ON and the work operation unit is operated ON, the control device drives the work implement when the work vehicle travels backward and, in a case where the backward work permission switch is operated OFF and the work operation unit is operated ON, the control device forcibly stops the work implement both when the work vehicle is traveling backward and when the work vehicle is shifted from a backward traveling state to a stop state.-
公开(公告)号：US20240328490A1
公开(公告)日：2024-10-03
申请号：US18619295
申请日：2024-03-28
发明人： Takumi TAKAHASHI , Kohei OGURA , Fumiaki ITO , Tasuku INOUE
CPC分类号： F16H37/022 , F16H61/04
摘要： [Problem] A transmission structure that may improve a traveling feeling when a drive traveling state is interrupted in traveling and then the drive traveling state is resumed is provided. [Solution] A control device actuates a clutch actuator so that only a clutch mechanism on a most downstream side in a transmission direction in a selected shift gear is brought to a disengaged state when receiving a power cut-off signal in a state in which a traveling state change member is subjected to a forward operation or a reverse operation, and, actuates the clutch actuator so that only the clutch mechanism on the most downstream side in the transmission direction in the selected presumed shift gear is brought to a disengaged state based on a traveling state, and in addition, actuates a gear shift actuator so that a gear ratio of a continuously variable transmission mechanism that realizes a vehicle speed at that time point in the presumed shift gear is obtained while the power cut-off signal is valid, and actuates the clutch actuator so that the clutch mechanism on the most downstream side in the transmission direction in the presumed shift gear at that time point is brought to an engaged state when a cancel signal for canceling the power cut-off signal is input.
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公开(公告)号：US20240328495A1
公开(公告)日：2024-10-03
申请号：US18592621
申请日：2024-03-01
发明人： Takumi TAKAHASHI , Kohei OGURA , Fumiaki ITO , Tasuku INOUE
CPC分类号： F16H47/04 , F16H61/0403 , F16H61/0437
摘要： The problem is in providing a transmission structure which includes low gear and high gear transmission mechanisms and an HST and can improve the vehicle speed responsiveness at the time of switching between a low gear transmission state and a high gear transmission state. Solution: At the time of switching between low gear and high gear transmission states, the present invention creates an idling state in which the power transmission state from a drive source to a drive wheel is cut off, and calculates an excess vehicle speed HST gear ratio by adding an excess correction value, which is for changing the vehicle speed at the switching completion point in time in excess of the actual vehicle speed by a predetermined speed, to an actual vehicle speed ratio, which represents an HST gear ratio that causes the vehicle speed at the switching completion point in time to match the actual vehicle speed attained immediately before the completion of the switching, so as to operate an HST actuator using the excess vehicle speed HST gear ratio as a control target value during the idling state.
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公开(公告)号：US20230309442A1
公开(公告)日：2023-10-05
申请号：US18186558
申请日：2023-03-20
发明人： Kohei OGURA , Masaaki KONOTO
CPC分类号： A01D34/006 , B60L15/20 , B60L58/18 , B60L50/66 , B60L58/12 , A01D34/78 , B60L2200/40 , B60L2240/547 , B60L2240/549 , B62D11/04
摘要： An electric work vehicle includes at least one motor configured to drive one or both of a travelling device and a working device included in a vehicle; an operation section configured to direct a rotational speed or actuation of the motor; a control section configured to control the motor according to an operation of the operation section; and a battery configured to supply power to the motor. The control section decreases an upper limit of rotational speed of the motor, based on a detected result with regard to a battery condition including a voltage of the battery.
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公开(公告)号：US20230125993A1
公开(公告)日：2023-04-27
申请号：US17970249
申请日：2022-10-20
发明人： Kohei OGURA
摘要： An electric work vehicle includes a traveling motor to drive wheels, a working motor to drive a work machine, a manipulator to direct a target rotation speed of the traveling motor and operation of the work machine, a controller to control the traveling motor and the working motor according to operation of the manipulator, and a temperature sensor to detect temperature of the working motor. The controller maintains or changes a target torque range of the working motor according to a detected temperature of the working motor, and the controller maintains or changes a target rotation speed of the traveling motor so that a calculated output torque value of the working motor falls within the target torque range.
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公开(公告)号：US20230014393A1
公开(公告)日：2023-01-19
申请号：US17867641
申请日：2022-07-18
发明人： Kazuhiro OWADA , Koji IWAKI , Ryo MOTOOKA , Kohei OGURA , Takumi TAKAHASHI
IPC分类号： F16H47/04 , F16H61/46 , F16H61/682 , F16H61/30
摘要： A transmission structure of the present invention causes, during a period from a time point when a rotational speed of a drive rotational power reaches a predetermined first/second speed stage shift-up start speed until a first/second speed stage shift-up end time point, one of an input-side clutch mechanism pair and an output-side clutch mechanism pair to be in a double transmitting state, and causes, in the double transmitting state, a first clutch mechanism and a second clutch mechanism of the other one of the input-side clutch mechanism pair and the output-side clutch mechanism pair to be shifted to a disengagement sate and an engagement state, respectively, while having frictional plate slid.
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公开(公告)号：US20220256766A1
公开(公告)日：2022-08-18
申请号：US17674322
申请日：2022-02-17
发明人： Takashi NISHIZAWA , Kohei OGURA , Masato ARATA , Daisuke KONO
摘要： An electric vehicle includes a body frame, a seat disposed on the body frame, a wheel attached to the body frame to be driven by an electric motor, a battery to supply electric power to the electric motor via an inverter and an electrical component, a plate member placed inside a covered space with a top being covered and on which the inverter and the electrical component are mounted, and a guide supported by the body frame to drawably guide the plate member from a position inside the covered space to a position outside the covered space.
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