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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：US20230068720A1
公开(公告)日：2023-03-02
申请号：US17897651
申请日：2022-08-29
发明人： Akihiro IMA , Koji KIYOOKA
摘要： A work vehicle includes a main body frame and left and right axle drive devices that drive left and right rear wheels. The axle drive devices include left and right electric motors that are housed and fixed in a motor housing that is fixed to the main body frame and left and right gear mechanisms that are housed in gear housings that are fixed to left and right ends of the motor housing and are connected to the respective electric motors to transmit power. A motor shaft of each of the electric motors rotates the corresponding wheel via the corresponding axle-integrated rotating member including the axle. The motor shaft is also arranged to overlap, along the axial direction, with an inner portion of a circumscribing circle of a maximum outer diameter portion of the corresponding axle-integrated rotating member.
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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：US11541749B2
公开(公告)日：2023-01-03
申请号：US16660114
申请日：2019-10-22
发明人： Takashi Nishizawa , Koji Kiyooka , Tasuku Inoue
摘要： A moving body drive unit has an electric motor that is located inside the case and has a motor shaft extending in a first direction, a gear shaft that is located, inside the case, parallel to the motor shaft so as to extend in the first direction and has a bevel gear formed thereon, an intermediate gear mechanism that transmits power from the motor shaft to the gear shaft, and a differential gear device that is located inside the case and has a ring gear that meshes with the bevel gear to transmit power from the gear shaft to two output shafts extending in a second direction. The motor shaft and the gear shaft are arranged at different positions in both the second direction and in a third direction that is orthogonal to both the first direction and the second direction.
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公开(公告)号：US20220316570A1
公开(公告)日：2022-10-06
申请号：US17709818
申请日：2022-03-31
发明人： Koji IWAKI , Tomoyuki TSUJI , Ryo MOTOOKA
IPC分类号： F16H47/04
摘要： A hydromechanical continuously variable speed transmission is provided. The hydromechanical continuously variable speed transmission can include: the HST 10 in which the planetary gear mechanism 11 is housed in the planetary gear support case 71 mounted on a face of the center section 35 to form the HMT unit 100, the face being on the side opposite to the side on which the HST case 23 is mounted, and the HMT unit 100 is further provided with the housing mounting face 35d for fixing the HMT unit 100 to the housing 91 of the traveling power transmission mechanism 89, the housing mounting face 35d being provided on the center section 35 so as to surround the outer circumference of the mounting face 71a on which the planetary gear support case 71 is mounted.
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公开(公告)号：US20220272896A1
公开(公告)日：2022-09-01
申请号：US17678076
申请日：2022-02-23
发明人： Koji KIYOOKA , Akihiro IMA , Takashi NISHIZAWA
摘要： A power transmission unit includes a motor; and a transmission case to enclose an input shaft, an output shaft, and a gear mechanism that transmits driving power between the input shaft and the output shaft. A motor case attached to the transmission case on a side opposite the gear mechanism of the transmission case has a cylindrical shape whose cross section is constant throughout a direction orthogonal to an axial direction of the motor case, and the motor is placed inside the motor case.
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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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公开(公告)号：US20220186826A1
公开(公告)日：2022-06-16
申请号：US17531943
申请日：2021-11-22
发明人： Mai TERADA , Koji KIYOOKA
IPC分类号： F16H57/031 , H02K7/00 , H02K7/116 , F16H1/32
摘要： A motor reducer of the at least an embodiment of the present invention includes a reduction gear train that decelerates rotation input from a motor, and a reducer casing that accommodates the reduction gear train. An input cover that seals a motor-side end face of the reducer casing is provided, and the input cover is provided separately from the motor casing.
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公开(公告)号：US11338671B2
公开(公告)日：2022-05-24
申请号：US16888067
申请日：2020-05-29
摘要： A hydraulic transaxle of the present invention includes an axle, a hydraulic static transmission (“HST”), a center case that has pair of oil passages for circulating the hydraulic oil between the hydraulic pump and the hydraulic motor, and a gear mechanism that transmits an output of the HST to the axle. A case supports the axle and accommodates the HST while also forming an oil reservoir. A hydraulic motor of the HST includes a motor shaft, a cylinder block with a plurality of cylinders fixed to the motor shaft, a plurality of pistons inserted into the cylinders, a fixed swash plate abutted by the plurality of pistons, and a fixed swash plate holder that supports the fixed swash plate with respect to the case. The motor shaft of the hydraulic motor is supported by the center case and the fixed swash plate holder.
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公开(公告)号：US11207977B2
公开(公告)日：2021-12-28
申请号：US16718901
申请日：2019-12-18
发明人： Hiroshi Sugimoto , Akihiro Ima , Toshifumi Yasuda
摘要： An axle drive apparatus of the present invention includes an adapter unit that has an adapter case connectable to an axle drive case while supporting a first motor, an adapter input member connected to an output shaft of the first motor by connection of the first motor to the adapter case, an adapter output member that is connected to an axle drive input member of the axle drive apparatus by connection of the adapter case to an axle drive case, and an adapter power transmission mechanism that operatively transmits the rotational power of the adapter input member to the adapter output member. The axle drive apparatus is connectable to a vehicle frame through an axle drive case side frame connecting part and an adapter case side frame connecting part respectively provided at the axle drive case and the adapter case.
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