| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a silencer structure of a vacuum cleaner capable of accurately reducing suction sound and cleaner body sound being the noise sources of the vacuum cleaner.SOLUTION: A silencer structure of a vacuum cleaner has an attachment (a duct) 2 including: a linear pipe part 4 whose one end is connected to a suction brush tool 3; and a bellows-shape hose part 5 for connecting the other end of the pipe part 4 to a cleaner body 1. An extension chamber A10 and an extension chamber B12 are arranged at two ore more places among a connection part (the first connection part) between the suction brush tool 3 and the pipe part 4, a connection part (the second connection part) between the pipe part 4 and the hose part 5, and a connection part (the third connection part) between the hose part and the cleaner body 1. The extension chamber A10 (the extension chamber B12) includes a sound absorption material 22 in an extension chamber space 20 communicating with the attachment (the duct) 2 via multiple sonic wave inlet openings 30.</p> |
