| 摘要 |
PROBLEM TO BE SOLVED: To provide a case body of a low cost and a high sealing property. SOLUTION: The dustproof structure of the case body has a case 2 with an opening and an opening/closing lid 4 provided on one end of the opening of the case 2 so as to be freely opened and closed by a hinge 6, a projection 3 is provided on the peripheral edge of the opening, packing 5 is attached to the position facing the projection 3 of the case 2 of the opening/closing lid 4, and the opening/closing lid 4 is sealed with the projection 3 and the packing 5. The projection 3 of the case 2 is provided with an inclination angle and is brought into contact with the packing 5 at the corner of the projection 3. COPYRIGHT: (C)2009,JPO&INPIT
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