| 摘要 |
The present invention relates to a skateboard which installs a first and a second propulsion shaft divided into two shafts in a hollow cover body disposed between a front board and a rear board and elastically performs stretching and contracting operation in a linear direction by cam operation. The front and the rear board are separated from each other and elastically bound to each other, and a caster is mounted on a lower surface of each board to form a conventional skateboard. A rotating body is disposed on an upper surface of the front and the rear board and operates in a forward and a reverse direction according to rolling motion of feet. The rotating body comprises: an upper plate having a groove formed on an inside of an end rim thereof; a lower plate fixed on the board by a bolt and provided with a groove formed on an upper surface thereof to correspond to the groove of the upper plate; a rotating plate mounted on a boss unit on the inside of the upper plate by a bolt; and a support ring disposed between the grooves of the upper and lower plates to allow the upper plate to freely rotate. |
