| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint water cut-off structure which maintains a strong water cut-off structure even if a joint width becomes large. SOLUTION: For example, an elastic mold molding sealant 4 is arranged in a joint inner space part 2 between adjacently right-left outer wall face materials 1 and 1. The sealant 4 has a recessed place 4d opening on the back face side. A hooking material 5 installed on the respective outer wall face material 1, 1 sides, projects in the recessed place 4d of the sealant 4 in the joint inner space part 2. When the joint width becomes large, the sealant 4 is pulled by the hooking material 5, and is extended in the width direction. The hooking material 5 is composed of a water cut-off plate. When the joint width becomes large, a part of projecting in the recessed place of the sealant of the hooking material 5 and an inner surface part of the recessed place 4d of the sealant 4, are brought into close contact by mutually pushing so as to put a joint in a water cut-off state. COPYRIGHT: (C)2007,JPO&INPIT
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