| 摘要 |
PROBLEM TO BE SOLVED: To lighten an arm, to improve carrier speed and to restrain dynamical deflection. SOLUTION: The first arm 2 is furnished with a movable pulley 18 assembled and fixed on a hand 1, a fixed pulley 16 assembled and fixed on the second arm 3, a movable pulley 18 and a timing belt 22 suspended between the movable pulley 18 and the fixed pulley 16. A frame 19 has a flat shape in accordance with a virtual flat region surrounded the timing belt 22. A first fixed shaft 21 to hold the movable pulley 18 freely rotatable and a second fixed shaft 17 extended from the second arm 3 and on which the fixed pulley 16 is assembled and fixed are respectively assembled and fixed on the frame 19. An outer appearance cover 60 is lightweight and covers the frame 19. |
