| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact apparatus in which first and second sliders are driven through specific pulley and belt to provide a long stroke. SOLUTION: The apparatus has a stationary guide 12 to which driving motor 13 is fixed, a first slider 19 slidable to the stationary guide 12, and a second slider 24 slidable to the first slider 19. The apparatus further has a driving pulley 16 connected to the driving motor 13 fixed to the stationary guide 12, and a second follower pulley 17 fixed to the stationary guide 12. The apparatus additionally has a first belt 18 fixed at its both ends to the first slider 19 and running between the driving pulley 16 and first follower pulley 17 and also has a pair of 2 stages of pulleys 20 and 21 disposed in a central line of the first slider 19 and over which 2 belts can run. The apparatus also has a second belt 22 fixed at its both ends to the stationary guide 12 and running between the 2 stages of pulleys 20 and 21 thereover and also has a third belt 23 fixed at its both ends to the second slider 24 and running between the 2 stages of pulleys 20 and 21 thereover. |
