| 摘要 |
PROBLEM TO BE SOLVED: To secure safety by providing with a lid for an inspection port of drainage pipe capable of locking with a simple structure. SOLUTION: Firstly, a lid body 2 is adhered to an opening part of a pipe 1. And then, by caulking a lid 3 into the lid body 2 and caulking a positioning plate 4 into a groove of the lid 3 to be locked, it is possible to prevent a mischief. Therefore it is possible to provide a product at a low price as the member is provided with a simple die. COPYRIGHT: (C)2009,JPO&INPIT
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