| 摘要 |
The present invention is limited in a vibration isolation device having a rolling operation unit formed by a ball, an upper plate, and a lower plate. The purpose of the present invention prevent a conical rolling operation unit from being impacted to improve a vibration isolation function and have a restoring force and enhance a counter-force with respect to long-period vibration when the ball is rolling around the center portion of the rolling operation unit. As regarding from the outside to the center portion of the rolling operation unit as the periphery, the slope of the periphery maintains 4-7 degrees, and the slope of the center portion maintains 7-20 degrees which is deeper angle than the slope of the periphery, and the center portion is composed of a curved surface or a lower groove based on the center part. |
