| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a waterproof door device in which a rear face of a water proof door is compactly structured, which can smoothly perform rising and falling even in the case of a waterproof door having a comparatively low cut-off height or a high cut-off height, which does not require a tremendously large force when storing the waterproof door in a case, and which is easily adaptable to specification change. <P>SOLUTION: A waterproof door device 1 comprises: a waterproof door 2 installed to rise and fall freely between a falling position and a standing position with respect to a case 4; a plurality of arms 22A to 22C connected to the case 4 so as to be rotatable with respect to the case such that a tip side of each arm moves upward from a position where the tip side contacts with the inner bottom surface of the case 4; a plurality of dampers 21A to 21C provided between the tip sides of the arms 22A to 22C and the waterproof door 2, respectively. The length of the arm 22A is different from the lengths of the arms 22B, 22C, and the lengths of the dampers 21A, 21B are different from the length of the damper 21C. <P>COPYRIGHT: (C)2012,JPO&INPIT |
