| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce the friction resistance of an airtight material.SOLUTION: An airtight structure of an opening/closing door device includes a door body 10 which acts to be opened and closed along a width of an opening part, an immovable region which is continuous along the width of the opening part nearby the door body 10 at least in the closed state, and a second airtight material 80 which is supported by one of the door body 10 and immovable region. The first airtight material 80 integrally has a base part 81 fixed to the one, and a projection piece part 82 which projects from the base part 81 and comes into contact with the other to enable deflection and deformation, and has a recessed groove 82a, which is continuous in a direction substantially orthogonal to the flexing direction, on one thickness-directional side or the other side of the base part side.</p> |
