| 摘要 |
PURPOSE:To simplify the constitution of a balancing device and make it small- sized by constituting the gravity balancing device with a rotary moment resistance ring made by connecting two, three or more concentric rings in series via elastic resistors provided among rings. CONSTITUTION:This rotary moment resistance ring R has 10 concentric rings 1-10 formed in a circle respectively, and elastic resistors 11-19 are inserted among the rings 1-10. The elastic resistors 11-13 among 11-19 are provided over the whole periphery among rings, and 14-19 are separately provided at quadrisection positions of ring gaps. A metal 20 with a hook bar 20a is fixed to the innermost ring 1 and a metal 21 with a pair of pinching lugs 21a is fixed to the outermost ring 10 respectively, and a metal 22 with a hook bar 22a and a pair of pinching lugs 22b on both ends is fixed to each of the other rings 2-9. The hook bars 20a, 22a are located in the middle of a pair of pinching lugs 21a, 21b of adjoining rings respectively. |
