| 摘要 |
PURPOSE:To convert the torque of a rotating element to a one-way thrust at an angle control wall, by providing two sets of structures applying a pressure varied by the rotating element to the angle control wall with the ends of each structure opposed to each other. CONSTITUTION:A rotating element 1 is mounted at its one end to a connector 5 fixed to a rotating shaft 3, and an angle alpha defined between the rotating shaft 3 and the rotating element 1 is variable. A bearing 2 is mounted to the other end of the rotating element 1, and is adapted to rotatably contact an inner wall of an angle control wall 7. Two sets of the angle control wall 7 are provided in such a manner that the ends of each wall contact with each other. When the rotating shaft 3 is rotated by a motor 10, the angle alpha between the rotating element 1 and the rotating shaft 3 tends to be a right angle by the torque of the rotating shaft 3. As a result, the bearing 2 applies a strong impact to the inner wall of the control wall 7, but when the rotating element 1 is moved to extend in a vertical direction, the angle alpha becomes a right angle, resulting that the impact force of the bearing 2 is released. As the ends of each control wall 7 are opposed to contact each other, the impact force is compensated, and the other ends of each control wall 7 are strongly pressed by the bearings 2, thereby permitting the device to advance straight in a direction depicted by the arrow F. |
