| 摘要 |
A mechanical toy which has a seemingly random movement of both its extendable parts and its motion is described. The toy has a base to which is attached several extendable members which can be pushed into the toy by the child to a retractable position. The extendable members are held in the retractable position by a series of independently acting holding members. The toy includes a button which is positioned so that a child may easily push it. On depression of the button one, several or all of the extendable members may be released from the retracted position allowing them to extend out of the toy into an extended position. Concurrently the propulsion mechanism of the toy may or may not also be activated causing the toy to move along the surface on which it is set. The propulsion mechanism is energized by the child mechanically depressing one of the extensions into its retracted position.
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