VIBRATION PREVENTING DEVICE

摘要

PURPOSE: A vibration preventing device is provided to selectively add a first bolt or a second bolt to the upper or lower surface of a main frame, thereby realizing easy construction. CONSTITUTION: A vibration preventing device(200) includes a main frame, a first bolt(20), a second bolt(30), and a vibration preventing rubber. The main frame is made by bending a metal frame which has a plate shape. The first bolt connects the upper surface of the main frame with a ceiling or an angle. The head part of the first bolt is located in the hollow part of the main frame. A threaded part is projected from the upper surface of the main frame. The vibration preventing rubber is a blend material and a rubber additive. The blend material is made of a butyl rubber of 20-50 weight part and a styrene thermoplastic elastomer of 50-80 weight part.