| 摘要 |
A hub-embedded transmission device according to the present invention comprises: a hub coupled to a wheel as an output member; an axle shaft installed not to be rotated relative to a chassis to support the wheel; a transmission cam installed in the axle shaft to be rotated; a central shaft receiving the transmission cam and installed in the axle shaft; a planetary gear train having a carrier coupled to an input member to receive power applied to the input part and to support one or more pinion gears to be rotated, a sun gear coupled to the central shaft to be rotated, and a ring gear coupled to the hub to output the power inputted from the carrier to the hub; a lockup clutch installed in the central shaft to perform a translational motion in an axial direction, and directly connecting the carrier and the ring gear according to positions guided by the transmission cam; a transmission clutch installed in the central shaft to perform the translation motion in the axial direction, but determining whether or not the sun gear rotates according to the positions guided by the transmission cam; and an anti-reversing clutch installed in the central shaft and determining whether or not to prevent backward movement according to the position of the transmission cam. The present invention can control whether or not to prevent the backward movement while shifting the forward and backward driving force of a hand rim over two levels by controlling the operation of the lockup clutch, the transmission clutch, and the anti-reversing clutch according to the rotation directional position of the transmission cam. |
