VANE PUMP
    1.
    发明申请
    VANE PUMP 审中-公开

    公开(公告)号:US20200011326A1

    公开(公告)日:2020-01-09

    申请号:US16347586

    申请日:2017-10-18

    IPC分类号: F04C2/344 F04C14/22

    摘要: The purpose of the present invention is to provide a vane pump that is able to prevent decrease of power transmission efficiency when the vane pump is used in combination with a device such as a transmission device, for example. Therefore, this vane pump (10, 20, 50, 60, 70, 80, 90) has a hollow shaft (1, 21, 51, 61, 71, 81, 91), the hollow shaft (1, 21, 51, 61, 71, 81, 91) is configured such that a hollow portion thereof allows a rotation driving shaft (which is, for example, an input shaft 103 of a transmission device as illustrated in FIG. 1, and, which also includes an input shaft which is inserted directly into the transmission device from a driving source 102 without having a coupling interposed therebetween) of the driving source (102) to be inserted therethrough, and the hollow shaft (1, 21, 51, 61, 71, 81, 91) and the rotation driving shaft (103) are coupled by means of a mechanism (spline, key and key groove, etc.) for transmitting a torque but transmitting no thrust.

    WORK VEHICLE
    2.
    发明申请

    公开(公告)号:US20230068720A1

    公开(公告)日:2023-03-02

    申请号:US17897651

    申请日:2022-08-29

    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.

    POWER TRANSMISSION UNIT
    3.
    发明申请

    公开(公告)号:US20220272896A1

    公开(公告)日:2022-09-01

    申请号:US17678076

    申请日:2022-02-23

    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.