| 摘要 |
PURPOSE:To improve the degree of freedom of the movement, and reduce the height of a movable mechanism by using four rotary support expansion legs, in which the lower ends of three expansible operating arms are supported by a support leg body freely to rotate and the upper ends of the operating arms are fitted to a base with a space to turn freely. CONSTITUTION:A support leg body 5 is moved fore and aft by extending and shrinking a piston 2. Namely, the support leg 5 can be moved in any direction by controlling the expansion of each operating arm 1, 2, 3. Consequently, three rotary support expansion legs 7B, 7C, 7D among four rotary support expansion legs 7 fitted to a base 8 are grounded, and the residual one leg is moved in the desired direction (a) and grounded. Next, one leg 7B among the grounded three legs is moved in the same direction (a) and grounded, and next, one leg 7C of the remaining two legs is moved, and finally, the remaining one leg 7D is moved in the same direction (a), and a movable mechanism thereby travels one step with four operations. |
