| 摘要 |
PURPOSE:To obtain a reciprocal actuator having low transmission loss by transmitting the reciprocal moving force due to the fluid pressure of piston through the pressing force of plural ball groups tightly arranged in a curved path to a driven member. CONSTITUTION:Upon supply of pressure fluid to the cylinder chambers 1A, 1B at the opposite sides of piston 2 through changeover of valve, the piston 2 is reciprocated in the arrow direction X-X. The moving force of piston is transmitted through ball group 6 to a driven member 3 to reciprocate said member in the arrow direction Y-Y along fixed path. Said reciprocation is transmitted to a movable member such as a door thus to perform opening/closing operation. Since the driving force of piston is transmitted efficiently, desired motion performance can be maintained reliably. |
