| 摘要 |
PURPOSE:To provide a device which is placed between the bottom plate of an acoustic appliance and a floor to keep the appliance from vibrating other things or resonating with them. CONSTITUTION:A balance spring 4 whose diameter is larger than the inside diameter of steel plates 5 is attached to the bottom of the upper part of a cylindrical body 1. Four other balance springs 7 are provided around the former 4. One steel plate 5 and a steel ball 6 are located between the balance spring 4 and a lower body 2 so that the steel plate can move about the steel ball as a fulcrum. The upper and the lower bodies 1, 2 are firmly coupled to each other by plural helical springs 8. |
