Patent ID: 8878059

Claim:
A waterproof box comprising, a body case and a cover mounted to the body case so as to cover an opening of the body case, wherein the cover is mounted to the body case by firstly making an engagement portion located at one end of the cover engaged with an engagement mating portion located at one end of the body case and then rotatably moving the cover around the engagement portion so that the cover is mounted to the body case, wherein each of the one end of the body case and the one end of the cover has a double-walled structure composed of an outer wall and an inner wall, and wherein with the cover mounted to the body case, the outer wall of the body case is located on an inner side of the outer wall of the cover, the inner wall of the cover is located on an inner side of the outer wall of the body case, the inner wall of the body case is located on an inner side of the inner wall of the cover, and the outer wall of the body case and the inner wall of the cover are arranged with a space between each other.