| 摘要 |
Model wheeled vehicles comprise a chassis (11), ground engaging wheels (3, 4) on the chassis, at least one wheel (4) being steerable, an electric motor (10) connected and arranged to drive at least one of the ground engaging wheels, a steering member (28) connected to the steerable wheel(s), and a cam follower (29) on the steering member. A steering control element, e.g. a card having a cam track on it can be moved relative to the cam follower (29) by means of the drive motor (10). As the card is moved, the vehicle drives along and steers depending on the cam track configuration. The card may bear more than one track, the path traversed by the vehicle depending on the orientation of the card relative thereto. The vehicle may have an override switch enabling it to be driven without card control, preferably then with the wheels steering it straight. A bumper device may, in such a case, turn the motor off if the vehicle encounters an obstacle. |
