| 摘要 |
A vibration damper comprises a first plate 11 that is fixed to one framework member 51, a second plate 13 that is fixed to another framework member 53, and an elastic material 15 that is filled in the interstices between the first plate 11 and the second plate 13. A first clearance W1 is formed between the another framework member 53 and a first fixing portion 21, and a second clearance W2 is formed between the first framework member 51 and a second fixing portion 29. The first plate 11 is made of a steel plate that is formed directing from the first fixing portion 21 to the second fixing portion 29, and the second plate 13 is made of a steel plate that is formed directing from the second fixing portion 29 to the first fixing portion 21. A space portion 50 constituted by the first clearance W1, the second clearance W2, the first plate 11, and the second plate 13 has a dimension which is at least sufficient for insertion of a joist 57 therein.
|
