| 摘要 |
PURPOSE:To improve the driving efficiency and to prevent occurrence of noise by changeably providing a wheel frame direction, bearing a wheel rotatably, and controlling the rotation of a motor for rotating the wheel according to the changing angle of the wheel frame at the time of changing the direction. CONSTITUTION:Upon operation of a motor 7 for rotating a wheel, the wheel 1 will rotate to travel an object 13. While, upon operation of a steering motor 8, a wheel frame 3 will rotate around an axis. Consequently, the direction of the rotary face of the wheel 1 will change to perform direction change in that direction. Here, the rotary angle of the wheel frame 3 is detected by a potentiometer 15 to feed a signal to a control circuit 16. Consequently, the motor 7 for rotating the wheel will rotate to enable directional change of the wheel 1 without slippage. As a result, a bevel gear for driving the wheel 1 is not required, thereby the entire apparatus can be simplified and thus improving the efficiency and eliminating the noise.
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