| 摘要 |
<p>PURPOSE:To prevent intrusion of noise or dust without sacrifice of drainage faunction, by coupling a valve body for opening/closing a drainage hole to a water absorbing rubber thereby enabling opening/closing of a valve body through swelling function of water absorbing rubber. CONSTITUTION:A receiving recess 2 is formed in a portion of a floor panel 1 and a planar valve body 4 formed with a drainage hole 3 is mounted slidably in the direction of an arrow A in said recess 2. A water absorbing rubber 5 is coupled through adhesive to one end of the valve body 4 and secured through adhesive to the inner sideface of the receiving recess 2. The receiving recess 2 is also formed with a drainage hole 8 and the distance S between the drainage holes 3, 8 is set to be equal with the slide stroke l. Upon swelling of the water absorbing rubber, the valve body 4 slides to communicate between the drainage holes 3, 8 so as to form a drainage path.</p> |
