Patents by Inventor Masato ARATA
Masato ARATA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230389468Abstract: [Problem] In a control system for an electric work vehicle, when a cruise switch is turned on, a vehicle is shifted more quickly to an operation that reflects a driver's intention.[Solution] The control system includes a control device that controls a rotation speed of a traveling motor on the basis of an operation position of a travel instruction tool and a cruise switch that instructs execution of a cruise mode in which a rotation speed of the traveling motor is controlled by an ON operation so that a set vehicle speed is stored, and that traveling is maintained without an operation of the travel instruction tool.Type: ApplicationFiled: May 22, 2023Publication date: December 7, 2023Inventors: Fumiaki ITO, Masato ARATA
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Publication number: 20230391195Abstract: [Problem] To improve the weight balance in the front-rear direction of an electric work vehicle having a configuration in which a battery is mounted on the front side, to lower the center of gravity of the electric work vehicle, to shorten the wiring distance when a main switch is switched using an operation switch, and to prevent the length of a space inside a bonnet in a front-rear direction from becoming excessively large. [Solution] An electric work vehicle includes: front wheels and rear wheels supported by a vehicle body frame; a driver's seat provided above a rear end portion of the vehicle body frame; a traveling motor for driving the rear wheels; a power transmission unit that is integrated with the traveling motor, and reduces the power of the traveling motor and transmits the power to an axle that is joined to the rear wheels; and a battery that supplies power to the traveling motor via a first inverter.Type: ApplicationFiled: May 22, 2023Publication date: December 7, 2023Inventor: Masato ARATA
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Publication number: 20230391220Abstract: [Problem] In a control system for an electric work vehicle, a space for a size increase of other components such as a high-voltage battery is increased, and a labor for battery replacement is reduced by eliminating a need for mounting a low-voltage battery. [Solution] The control system includes a traveling motor to which power is fed from a battery via a main switch, a control device which controls an ON/OFF state of the main switch, and a first start switch connected between an output side of a DC-DC converter and the control device and is configured such that a primary side of the main switch is connected to an input side of the DC-DC converter with a second start switch interposed, and the control device is started by an output voltage of the DC-DC converter by an operation of the second start switch to an energized position.Type: ApplicationFiled: May 23, 2023Publication date: December 7, 2023Inventors: Masato ARATA, Fumiaki ITO
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Publication number: 20230108197Abstract: A hybrid vehicle includes an engine that drives first wheel, and a motor that drives second wheel. The hybrid vehicle includes (1) a minute speed launch support mode where the hybrid vehicle is driven only by the motor as a drive source, (2) a sudden launch support mode where the hybrid vehicle is driven by the engine and motor as the drive source, and (3) a smooth launch support mode where the hybrid vehicle is driven only by the motor as the drive source in an early stage, is driven by the engine and motor in a middle stage, and is driven only by the engine in a late stage, and if an operation amount of an acceleration instruction unit is not 0 or is substantially not 0, any one of the support modes is executed according to an operation status of the acceleration instruction unit.Type: ApplicationFiled: December 9, 2022Publication date: April 6, 2023Inventors: Fumiaki ITO, Koji KIYOOKA, Tasuku INOUE, Masato ARATA
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Patent number: 11554658Abstract: A hybrid vehicle includes an engine that drives first wheel, and a motor that drives second wheel. The hybrid vehicle includes (1) a minute speed launch support mode where the hybrid vehicle is driven only by the motor as a drive source, (2) a sudden launch support mode where the hybrid vehicle is driven by the engine and motor as the drive source, and (3) a smooth launch support mode where the hybrid vehicle is driven only by the motor as the drive source in an early stage, is driven by the engine and motor in a middle stage, and is driven only by the engine in a late stage, and if an operation amount of an acceleration instruction unit is not 0 or is substantially not 0, any one of the support modes is executed according to an operation status of the acceleration instruction unit.Type: GrantFiled: August 18, 2020Date of Patent: January 17, 2023Assignee: KANZAKI KOKYUKOKI MFG. CO., LTD.Inventors: Fumiaki Ito, Koji Kiyooka, Tasuku Inoue, Masato Arata
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Publication number: 20220256766Abstract: 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.Type: ApplicationFiled: February 17, 2022Publication date: August 18, 2022Inventors: Takashi NISHIZAWA, Kohei OGURA, Masato ARATA, Daisuke KONO
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Publication number: 20220131445Abstract: In a driving device according to the present invention, an internal space of a fixed housing provided with an electric motor and an electric circuit board configured to control drive of the electric motor is partitioned into a first chamber arranged therein with the electric motor and a second chamber arranged therein with the electric circuit board. The driving device includes a heat dissipation part configured to efficiently dissipate heat generated from the electric circuit board, from the second chamber to the outside of the fixed housing, and thus, heat generated from the electric motor is not easily transmitted to the second chamber via the fixed housing, and moisture is prevented from entering the fixed housing when outside air flows into the fixed housing.Type: ApplicationFiled: September 30, 2021Publication date: April 28, 2022Inventors: Yusuke NAKAMURA, Shigeaki NAKAGAWA, Tatsuya KAMADA, Masato ARATA, Yoshitaka KOCHIDOMARI, Kousaku KITA, Yujiro TANAKA
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Publication number: 20210053435Abstract: A hybrid vehicle includes an engine that drives first wheel, and a motor that drives second wheel. The hybrid vehicle includes (1) a minute speed launch support mode where the hybrid vehicle is driven only by the motor as a drive source, (2) a sudden launch support mode where the hybrid vehicle is driven by the engine and motor as the drive source, and (3) a smooth launch support mode where the hybrid vehicle is driven only by the motor as the drive source in an early stage, is driven by the engine and motor in a middle stage, and is driven only by the engine in a late stage, and if an operation amount of an acceleration instruction unit is not 0 or is substantially not 0, any one of the support modes is executed according to an operation status of the acceleration instruction unit.Type: ApplicationFiled: August 18, 2020Publication date: February 25, 2021Inventors: Fumiaki ITO, Koji KIYOOKA, Tasuku INOUE, Masato ARATA
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Patent number: 10807458Abstract: An axle driving apparatus may include a first rotary shaft connected to an internal combustion engine; a second connected to an electric motor; a third rotary shaft connected to a driving shaft of a wheel; an interlocking unit interlocking the first, second, and third rotary shaft; and an input and output switchover unit. The interlocking unit and the input and output switchover unit are structured to switch the interlocking unit between a first mode in which only the power of the internal combustion engine is output from the third rotary shaft, a second mode in which only the power of the electric motor is output from the third rotary shaft, a third mode in which the power of the internal combustion engine and the power of the electric motor are combined and output from the third rotary shaft, and a fourth mode in which the power of the internal combustion engine is output from the second rotary shaft to the electric motor.Type: GrantFiled: August 8, 2018Date of Patent: October 20, 2020Assignee: KANZAKI KOKYUKOKI MFG. CO., LTD.Inventors: Takashi Nishizawa, Tasuku Inoue, Hiroaki Hashima, Yoshitaka Kochidomari, Fumiaki Ito, Masato Arata, Koga Yamane
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Publication number: 20190047399Abstract: An axle driving apparatus may include a first rotary shaft connected to an internal combustion engine; a second connected to an electric motor; a third rotary shaft connected to a driving shaft of a wheel; an interlocking unit interlocking the first, second, and third rotary shaft; and an input and output switchover unit. The interlocking unit and the input and output switchover unit are structured to switch the interlocking unit between a first mode in which only the power of the internal combustion engine is output from the third rotary shaft, a second mode in which only the power of the electric motor is output from the third rotary shaft, a third mode in which the power of the internal combustion engine and the power of the electric motor are combined and output from the third rotary shaft, and a fourth mode in which the power of the internal combustion engine is output from the second rotary shaft to the electric motor.Type: ApplicationFiled: August 8, 2018Publication date: February 14, 2019Inventors: Takashi NISHIZAWA, Tasuku INOUE, Hiroaki HASHIMA, Yoshitaka KOCHIDOMARI, Fumiaki ITO, Masato ARATA, Koga YAMANE