| 摘要 |
An entertainment apparatus includes a chassis, support wheels rotatably secured to the chassis, a back-wind spring powered motor mounted to the chassis and drivably connected to at least one of the support wheels, so that the motor is wound by rolling the chassis backward on the support wheels, and a locking mechanism including a structure for releasibly locking the motor against unwinding and a structure for releasing the motor to deliver torque to and thereby rotate the at least one support wheel and accelerate the apparatus across a support surface. The locking mechanism includes a fulcrum structure secured to the chassis and having a fulcrum pivot connection member, a lever structure pivotally connected to the pivot connection member and having a lever magnet secured to the lever structure a certain distance from the fulcrum pivot connection member, and connected to the locking mechanism so that pivoting the lever structure on the fulcrum pivot connection member in a first direction causes the motor locking mechanism to release and thereby actuate the motor, and pivoting the lever structure on the fulcrum pivot connection member in a second direction causes the motor locking mechanism to lock the motor against actuation, and an actuating magnet to be hand oriented by the user relative to the lever magnet so that the field of the actuating magnet repels the field of the lever magnet and thereby pivots the lever structure in the first direction to actuate the motor when placed close to the lever magnet.
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