WATERPROOF STRUCTURE OF ELECTRONIC APPARATUS, AND METHOD FOR MANUFACTURING THE SAME

PROBLEM TO BE SOLVED: To provide a waterproof structure of an electronic apparatus without hindering reduction in size and thickness, and having sufficient waterproof effect. SOLUTION: In a casing structure of an electronic apparatus in which a projection 3 formed on an outer peripheral part of a first case member 1 is inserted in a groove 4 formed in an outer peripheral part of a second case member 2 to engage the outer peripheral parts with each other, at least one recess 6 is formed in a bottom surface of the groove 4, and a liquid resin 5 is arranged on a liquid-repellent film 7 coated on a surface of the groove 4 including the recess 6. A plurality of recesses 6 are arranged on both ends of the bottom surface of the groove 4 or over the entire area of the bottom surface, and side faces of the recess 6 are substantially parallel to side faces of the groove 4. The liquid-repellent film 7 has a liquid-repellent effect to the liquid resin 5, and the liquid resin 5 is a member having the rubber elasticity after it is hardened. In the condition in which a space is formed between the liquid resin 5 arranged on the liquid-repellent film 7 of the groove 4 and the recess 6, the projection 3 is inserted in the groove 4 to press the hardened liquid resin 5, and the liquid resin 5 is deformed to engage the first case member 1 with the second case member 2 while the space is filled by the liquid resin. COPYRIGHT: (C)2011,JPO&INPIT