公开(公告)号：US20210039501A1

公开(公告)日：2021-02-11

申请号：US17078168

申请日：2020-10-23

Applicant: Kubota Corporation

Inventor： Kazuaki Matsuda ,  Hirokazu Ito ,  Yasuhiro Manji

IPC: B60L7/24 ,  A01D34/78 ,  B60T1/00 ,  B60T13/74 ,  F16D59/02 ,  B60T17/18 ,  B60T8/17 ,  A01D34/66 ,  A01D34/68 ,  A01D69/02 ,  B60L1/00

Abstract: An electric travelling vehicle including: a motor controller configured to control an electric motor based on displacement of a steering operation part to a forward travel position, a neutral position, and a rearward travel position, a brake controller configured to bring an electromagnetic power-off brake into a released state or a braking state; and a travel state detector configured to detect a travelling state that is accompanied with the released state, a stopped state that is accompanied with the braking state, and a transit stopped state that is accompanied with the braking state.

公开(公告)号：US20200207199A1

公开(公告)日：2020-07-02

申请号：US16677137

申请日：2019-11-07

Applicant: Kubota Corporation

Inventor： Katsuhiko Uemura ,  Hirokazu Ito ,  Yasuhiro Manji

IPC: B60K1/04 ,  B60L50/50 ,  B62D21/15 ,  B62D25/08

Abstract: An electric work vehicle includes front wheels and rear wheels for traveling, right and left machine body frames extending along a front/rear direction and an electric motor. The electric motor includes at least one of a front output shaft protruding forwards and a rear output shaft protruding rearwards. The electric motor is supported to front portions of the machine body frames to be located forwardly of the front wheels as seen in a side view.

公开(公告)号：US20200044401A1

公开(公告)日：2020-02-06

申请号：US16434331

申请日：2019-06-07

Applicant: Kubota Corporation

Inventor： Katsuhiko Uemura ,  Hirokazu Ito ,  Yasuhiro Manji

IPC: H01R27/02 ,  H01M2/20 ,  H01R13/52 ,  H01R13/66

Abstract: Provided is a battery connector assembly that allows adaptation of a connector of a battery to both a connector of an electric work vehicle and a connector of a charger. The assembly includes, in a connector assembly box, a battery connecting connector removably connected to a battery side connector having a plurality of terminals to be connected to the battery a vehicle connecting connector removably connected to a vehicle side connector having a plurality of terminals to be connected to the electric work vehicle and a charger connecting connector removably connected to a charger side connector provided in a charger for charging power supplied from an external power source to the battery and having a plurality of terminals.

公开(公告)号：US20180338417A1

公开(公告)日：2018-11-29

申请号：US15835692

申请日：2017-12-08

Applicant: Kubota Corporation

Inventor： Kazuaki Matsuda ,  Katsuhiko Uemura ,  Hirokazu Ito ,  Yasuhiro Manji

IPC: A01D34/00 ,  A01D34/66 ,  A01D34/78 ,  B60W30/188 ,  B60L15/20

CPC classification number: A01D34/008 ,  A01D34/006 ,  A01D34/668 ,  A01D34/78 ,  A01D2101/00 ,  B60L15/2045 ,  B60L2240/12 ,  B60L2240/421 ,  B60W30/1886 ,  B60W2300/156

Abstract: A grass mower includes a vehicle speed instruction value calculation section (53) for generating a vehicle speed instruction value including a maximal vehicle speed, based on an operational position of a man-operable vehicle speed controlling tool (15), a mode selection section (70) for selecting a control mode from a plurality of control modes, a control table (52) in which a plurality of control parameters are set, a vehicle speed control target value calculation section (54) configured to calculate a vehicle speed control target value, based on a vehicle speed instruction value generated by the vehicle speed instruction value calculation section (53) and a selected control parameter corresponding to the control mode selected by the mode selection section (70), a cutter blade control target value calculation section (55) configured to calculate a rotational speed control target value for a cutter blade (30), based on the selected control parameter, and a cutter blade control section (4B) configured to control the cutter blade drive mechanism (31) based on the rotational speed control target value.

公开(公告)号：US20180304735A1

公开(公告)日：2018-10-25

申请号：US16017082

申请日：2018-06-25

Applicant: Kubota Corporation

Inventor： Hirokazu Ito ,  Kazuo Koike ,  Yasuhiro Manji

IPC: B60K1/04 ,  H01M10/6551 ,  H01M10/6563 ,  A01D34/78 ,  A01D34/82 ,  H01M10/625 ,  B60L11/18 ,  B60K7/00 ,  H01M2/10 ,  B60K17/04 ,  A01D101/00 ,  A01D69/02 ,  B60K1/00

CPC classification number: B60K1/04 ,  A01D34/78 ,  A01D34/82 ,  A01D69/02 ,  A01D2101/00 ,  B60K7/0007 ,  B60K17/043 ,  B60K2001/005 ,  B60K2001/0416 ,  B60K2007/0046 ,  B60K2007/0053 ,  B60K2007/0061 ,  B60L11/182 ,  B60L11/1824 ,  B60L11/1874 ,  B60L11/1877 ,  B60L2200/40 ,  B60L2220/42 ,  B60L2220/46 ,  B60Y2200/223 ,  B60Y2300/91 ,  B60Y2304/01 ,  B60Y2400/112 ,  H01M2/1083 ,  H01M10/625 ,  H01M10/6551 ,  H01M10/6563

Abstract: An electric work vehicle includes: a battery pack that is arranged between a left rear wheel arranged outside of a left frame and a right rear wheel arranged outside of a right frame, the front end of the battery pack being located forward of an axle center of a rear wheel unit; a left motor that is arranged above the battery pack, in the periphery of the left rear wheel, receives a supply of power from the battery pack, and transmits rotational power to the left rear wheel; and a right motor that is arranged above the battery pack, in the periphery of the right rear wheel, receives a supply of power from the battery pack, and transmits rotational power to the right rear wheel.

公开(公告)号：US10063016B2

公开(公告)日：2018-08-28

申请号：US15178877

申请日：2016-06-10

Applicant: Kubota Corporation ,  DDK Ltd.

Inventor： Hirokazu Ito ,  Kazuo Koike ,  Masatake Takai ,  Koichi Yokota ,  Kazuyuki Ozai

IPC: H01R13/684 ,  H01R13/68 ,  H01R13/696

CPC classification number: H01R13/684 ,  H01R13/68 ,  H01R13/696

Abstract: An electric connector includes a socket connector, a bar-like plug connector to be inserted/withdrawn to/from the socket connector and a fuse. When the plug connector is inserted to the socket connector, electric conduction is established in the electric circuit via the fuse. The fuse is attached to the socket connector.

公开(公告)号：US09783203B2

公开(公告)日：2017-10-10

申请号：US14749155

申请日：2015-06-24

Applicant: KUBOTA CORPORATION

Inventor： Kazuo Koike ,  Hirokazu Ito

IPC: B60W30/188 ,  H02P23/14 ,  A01D34/64 ,  A01D34/00 ,  A01D34/78 ,  B60L1/00 ,  B60L11/14 ,  B60L11/18 ,  B60L15/20 ,  A01D69/02 ,  A01D101/00

CPC classification number: B60W30/1886 ,  A01D34/006 ,  A01D34/64 ,  A01D34/78 ,  A01D69/02 ,  A01D2101/00 ,  B60L1/003 ,  B60L11/14 ,  B60L11/1803 ,  B60L15/2036 ,  B60L2200/40 ,  B60L2220/44 ,  B60L2240/12 ,  B60L2240/24 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/461 ,  B60L2250/24 ,  B60L2250/26 ,  B60W2300/156 ,  H02P23/14 ,  Y02T10/645 ,  Y02T10/70 ,  Y02T10/7005 ,  Y02T10/7077 ,  Y02T10/72 ,  Y02T10/7275

Abstract: The present invention provides a riding work vehicle that includes a vehicle body having a driver seat; a driving wheel unit supporting the vehicle body; a working electric motor that drives a work unit having a work device; an electric motor controller controlling an operation of the working electric motor in a steady mode or a power saving mode in which consumed power is smaller than the steady mode; and a work load evaluator that evaluates load of the working electric motor. In the riding work vehicle, the electric motor controller operates the working electric motor in the power saving mode in a case where the load of the working electric motor evaluated by the work load evaluator is low load lower than a threshold value.

公开(公告)号：US20170282733A1

公开(公告)日：2017-10-05

申请号：US15378868

申请日：2016-12-14

Applicant: Kubota Corporation

Inventor： Hirokazu Ito ,  Yasuhiro Manji ,  Kazuaki Matsuda

IPC: B60L11/18

Abstract: A portable charger device 200 includes a charger device side battery 3, a first charging control section 31 for non-quick charging of the charger device side battery 3 by power supply from an external power source 8, and a second charging control section 32 for quick charging of a vehicle side battery 4 mounted on an electric vehicle 100 by power supply from the charger device side battery 3.

公开(公告)号：US20170136864A1

公开(公告)日：2017-05-18

申请号：US15352059

申请日：2016-11-15

Applicant: Kubota Corporation

Inventor： Hirokazu Ito ,  Kazuo Koike ,  Yasuhiro Manji

IPC: B60K1/04 ,  B60K7/00 ,  A01D69/02 ,  A01D34/78 ,  A01D34/82 ,  B60L11/18 ,  B60K17/04

CPC classification number: B60K1/04 ,  A01D34/78 ,  A01D34/82 ,  A01D69/02 ,  A01D2101/00 ,  B60K7/0007 ,  B60K17/043 ,  B60K2001/005 ,  B60K2001/0416 ,  B60K2007/0046 ,  B60K2007/0053 ,  B60K2007/0061 ,  B60L11/182 ,  B60L11/1824 ,  B60L11/1874 ,  B60L11/1877 ,  B60L2200/40 ,  B60L2220/42 ,  B60L2220/46 ,  B60Y2200/223 ,  B60Y2300/91 ,  B60Y2304/01 ,  B60Y2400/112 ,  H01M2/1083 ,  H01M10/625 ,  H01M10/6551 ,  H01M10/6563

Abstract: An electric work vehicle includes: a battery pack that is arranged between a left rear wheel arranged outside of a left frame and a right rear wheel arranged outside of a right frame, the front end of the battery pack being located forward of an axle center of a rear wheel unit; a left motor that is arranged above the battery pack, in the periphery of the left rear wheel, receives a supply of power from the battery pack, and transmits rotational power to the left rear wheel; and a right motor that is arranged above the battery pack, in the periphery of the right rear wheel, receives a supply of power from the battery pack, and transmits rotational power to the right rear wheel.

公开(公告)号：US09616736B2

公开(公告)日：2017-04-11

申请号：US14956670

申请日：2015-12-02

Applicant: Kubota Corporation

Inventor： Hirokazu Ito ,  Kazuo Koike

IPC: B60K1/04 ,  B60K7/00 ,  B60K17/04 ,  B60K1/02 ,  B60L11/18 ,  B62D11/04 ,  B60K11/06 ,  B60K1/00

CPC classification number: B60K1/04 ,  B60K1/02 ,  B60K7/0007 ,  B60K11/06 ,  B60K17/043 ,  B60K2001/005 ,  B60K2001/0416 ,  B60K2007/0046 ,  B60K2007/0061 ,  B60L11/1874 ,  B60Y2200/223 ,  B62D11/04

Abstract: An electric work vehicle includes a motor unit including a left motor and a right motor arranged side by side in a transverse direction of the vehicle and connected to a vehicle frame, a left transmission mechanism extending rearward in a fore-and-aft direction of the vehicle from a left side of the left motor to transmit power from the left motor to a left rear wheel, a right transmission mechanism extending rearward in the fore-and-aft direction from a right side of the right motor to transmit power from the right motor to a right rear wheel, and a battery unit housed in a battery casing. The battery casing includes an upper casing extending rearward of the left transmission mechanism and the right transmission mechanism from a top of the motor unit, and a lower casing projecting downward from a bottom of a rear half of the upper casing.