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公开(公告)号：US10562567B2
公开(公告)日：2020-02-18
申请号：US15825412
申请日：2017-11-29
Applicant: Kubota Corporation
Inventor： Kazuo Koike , Hirokazu Ito
IPC: B62D11/04 , B60K7/00 , A01D69/02 , B62D11/00 , A01D101/00
Abstract: A work vehicle includes a battery that outputs a DC power, at least two electric motors, and at least two inverters, each inverter being configured to convert the DC power from the battery into an AC power and to supply the AC power to one of the electric motors. The work vehicle further includes an accommodation box attachable/detachable to/from the vehicle body, the accommodation box accommodating a plurality of electrical equipments including the inverters.
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公开(公告)号：US20190381900A1
公开(公告)日：2019-12-19
申请号：US16411473
申请日：2019-05-14
Applicant: Kubota Corporation
Inventor： Hirokazu Ito , Yasuhiro Manji
Abstract: Disclosed is an electric work vehicle that includes a traveling vehicle body, a wheel unit having wheels on the right and left sides of the traveling vehicle body, a motor for supplying rotational drive force to the wheel unit, and a battery for supplying electric power to the motor. The battery includes a first battery disposed at a right/left center of the traveling vehicle body, and second batteries disposed in right/left symmetricity on the traveling vehicle body to act as supplementary batteries.
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公开(公告)号：US20190380270A1
公开(公告)日：2019-12-19
申请号：US16411405
申请日：2019-05-14
Applicant: Kubota Corporation
Inventor： Katsuhiko Uemura , Hirokazu Ito
IPC: A01D43/063 , A01D34/64
Abstract: A lawn mower includes a mower device provided between a pair of right and left front wheels and a pair of right and left rear wheels and configured to mow grass on a traveling land surface; a grass collecting container provided rearwardly of a vehicle body, a conveyer duct extending between the mower device and the grass collecting container as extending through between the pair of right and left rear wheels and configured to convey grass clippings discharged from the mower device to the grass collecting container; and a belt conveyer configured to convey the grass clippings discharged from the mower device toward the grass collecting container. The belt conveyer forms a conveying bottom face of the conveyer duct.
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公开(公告)号：US10426084B2
公开(公告)日：2019-10-01
申请号：US14640411
申请日：2015-03-06
Applicant: KUBOTA CORPORATION
Inventor： Hirokazu Ito , Yoshikazu Togoshi
IPC: A01D34/78
Abstract: A mower includes a rotary grass cutting blade. A mower deck houses the rotary blade in an interior thereof. A motor has at least a portion thereof positioned or extending into the interior of the mower deck. The motor rotationally drives the rotary blade. A guide member can be utilized to form an air flow passage along the motor, with the air flow passage connecting the interior and exterior of the mower deck.
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公开(公告)号：US10334777B2
公开(公告)日：2019-07-02
申请号：US15825282
申请日：2017-11-29
Applicant: Kubota Corporation
Inventor： Katsuhiko Uemura , Hirokazu Ito
Abstract: An electric work vehicle includes a carrier provided separately from a vehicle body for mounting/dismounting a battery, a carrier storage section provided in the vehicle body for attaching the carrier to the vehicle body, and an attachment mechanism for attaching/detaching the carrier to/from the carrier storage section.
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Patent Agency Ranking
公开(公告)号：US20190193783A1
公开(公告)日：2019-06-27
申请号：US16185303
申请日：2018-11-09
Applicant: Kubota Corporation
Inventor： Katsuhiko Uemura , Hirokazu Ito
CPC classification number: B62D6/08 , A01D34/006 , A01D34/66 , B60K7/0007 , B60L15/20 , B60L15/32 , B62D11/003 , B62D11/04
Abstract: An electrically powered work vehicle includes a left driving wheel and a right driving wheel that are supported to a vehicle body, a left motor for driving the left driving wheel and a right motor for driving the right driving wheel, a steering wheel, an acceleration operation tool, a turning command calculation section for calculating a tuning command based on a steering operation amount of the steering wheel, a turning torque calculation section for calculating a turning torque based on the turning command, a vehicle speed command calculation section for calculating a vehicle speed command based on an acceleration operation amount of the acceleration operation tool, a vehicle speed torque calculation section for calculating a vehicle speed torque based on the vehicle speed command, and a speed command calculation section for calculating a left motor speed command and a right motor speed command based on the turning torque and the vehicle speed torque.
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公开(公告)号：US20190156595A1
公开(公告)日：2019-05-23
申请号：US16003566
申请日：2018-06-08
Applicant: Kubota Corporation
Inventor： Yasuhiro Manji , Hirokazu Ito
Abstract: Disclosed is a work vehicle management system including: a battery work information generation unit that generates battery work information indicating a use state of a battery during work of a work vehicle; a battery deterioration information generation unit that chronologically diagnoses the battery work information to generate battery deterioration information that indicates a deterioration trend of the battery that is unique to the work vehicle; and a notification unit that performs notification of the battery deterioration information to a manager of the work vehicle.
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公开(公告)号：US10293853B2
公开(公告)日：2019-05-21
申请号：US15490157
申请日：2017-04-18
Applicant: Kubota Corporation
Inventor： Kazuo Koike , Hirokazu Ito , Yoshikazu Togoshi
IPC: B62D11/00 , A01D34/00 , A01D69/02 , B60K7/00 , B60L15/00 , B60L15/36 , B62D11/04 , B62D6/04 , B60L15/20 , A01D101/00
Abstract: A self-propelled vehicle includes a maneuvering unit, a drive unit including first and second drive sections, which are driven and controlled by drive wheel control commands, a drive wheel unit including left and right drive wheels driven by the first and second drive sections, respectively, at least one caster wheel which is controlled by a caster wheel control command, a bank detector for detecting a degree of bank of the vehicle and a control unit including a drive wheel control section for generating the drive wheel control commands. The control unit further includes a caster wheel control section which generates the caster wheel control command for controlling the steering angle of the caster wheel during a bank traversing travel, based on the bank degree so as to resolve a difference between a target travel and the actual travel which occurs during the bank traversing travel.
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公开(公告)号：US20190124837A1
公开(公告)日：2019-05-02
申请号：US16009868
申请日：2018-06-15
Applicant: Kubota Corporation
Inventor： Hirokazu Ito , Yasuhiro Manji
Abstract: A mower unit 3 includes a rotational shaft extending upwards through a top wall of a mower deck, a cutter blade attached to a lower portion of the rotational shaft, a mower motor 4 having a rotor 43 disposed upward and a coil 42 disposed downward along an axial direction of an output shaft 41, a mount deck 5 having a horizontal mounting face for mounting the mower motor 4 in such a manner that the output shaft 41 assumes a vertical posture, the mount deck protruding outwards from a side wall of the mower deck, and a cooling arrangement 50 incorporated in the mound deck 5 for discharging heat of the mower motor 4.
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公开(公告)号：US20180338416A1
公开(公告)日：2018-11-29
申请号：US15825282
申请日：2017-11-29
Applicant: Kubota Corporation
Inventor： Katsuhiko Uemura , Hirokazu Ito
CPC classification number: A01D34/008 , A01D34/64 , A01D34/6818 , A01D34/78 , A01D69/02 , B60K1/04 , B60K2001/0416 , B60K2001/0477 , B60K2001/0494 , B60L50/53 , B60L2200/40 , B60Y2200/221 , B60Y2200/223
Abstract: An electric work vehicle includes a carrier provided separately from a vehicle body for mounting/dismounting a battery, a carrier storage section provided in the vehicle body for attaching the carrier to the vehicle body, and an attachment mechanism for attaching/detaching the carrier to/from the carrier storage section.
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