| 摘要 |
<p>The present invention has an object of providing a cushioning device having a stable and superb vibration-damping property and a metal cover attachable by use of the cushioning device. A cushioning device 10, which is to be located between a bolt boss 41 provided on an exhaust manifold 1 as a vibration source and a heat insulator 3 as a connection target and connects the bolt boss 41 provided on the exhaust manifold 1 and the heat insulator 3 to each other and cushions transmission of a vibration from the bolt boss 41 provided on the exhaust manifold 1 to the heat insulator 3, includes a multi-stage coiled and spiral spring 50 for cushioning the vibration, a grommet 20 for joining the multi-stage coiled and spiral spring 50 and the heat insulator 3 to each other, and a collar member 30 located between an attaching bolt 42 tightened to the bolt boss 41 provided on the exhaust manifold 1 and the multi-stage coiled and spiral spring 50. The multi-stage coiled and spiral spring 50 is formed of a wiring member having a spiral shape as seen in a plan view.</p> |
