| 摘要 |
A self-propulsion skateboard is provided to allow a player to move forward, steer or climb in a desired direction, not by applying a manual force but using the gravity or the weight of the player. A self-propulsion skateboard(100) includes: a resilient deck(110) having a convex central area; a retainer(120) fixed to a lower portion of the deck; a steering axis(130) fixed to an external end portion of the retainer; a wheel shaft(140) rotatably hinged to the outside of the steering axis; and one-directional propulsion wheels(150) fixed to the wheel shaft, moving only in a forward direction. The length of the deck is variable in the forward/backward direction according as the convex central area ascends or descends because of a change in the weight of a player.
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