| 摘要 |
A sound muffling device having increased freedom to size, which allows the device to maintain excellent installability even if its length is increased. The sound muffling device is inserted into a fuel tank through its opening (E) and installed in position, and damps and absorbs noise produced when the fuel in the tank moves. The sound muffling device (1) is formed in a three-dimensional shape having a lateral portion (X) with a width smaller than the width of the opening (E) and a longitudinal portion (Y) with a length greater than the width of the opening (E). The longitudinal portion (Y) has sound muffling parts (2A, 2B) connected to each other at a position intermediate the longitudinal direction of the portion (Y) by using a connection part (3). |
