| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide with a simple structure a receptacle by which sufficient hermetic state can be obtained, even if a base and a lid are made large-sized. SOLUTION: A base 1 is a cylinder with a bottom and is substantially in the shape of a dome. A protruded part 2 for fitting which is almost L-shaped in cross section is formed from the perimeter of the opening of the base 1. An annular-shaped groove 3 is formed by denting on the inner bottom of the protruded part 2. Also a cylinder 6 for fitting with the protruded part 2 is protruded from the underside of a lid 5. A ring-shaped groove 7 is formed by denting along the perimeter of the fitting cylinder 6. Annular-shaped and solid elastic seals 4 and 8 are fitted in the grooves 3 and 7 to fill the spaces on the perimeter of the base 1 and the lid 5. With this structure, even if the base 1 and the lid 5 are made large-sized adequate hermeticity is ensured.</p> |
