Patent ID: 8389856

Claim:
A waterproof structure of an electrical junction box, the junction box including a plurality of connectors, a main-body case integrally resin-molded, and a cover integrally resin-molded, the main-body case and the cover being adapted to receive therein an electrical circuit board connected to the connectors, the cover being configured to be attached to the main-body case by a locking projection protruding on an outer surface of a peripheral wall of the main-body case brought into engagement with an engagement projection protruding on an inner surface of a peripheral wall of the cover, and at least one peripheral wall portion of the peripheral wall of the main-body case including a stepwise portion in which a punched hole is provided for molding of the locking projection, the stepwise portion provided below the locking projection, characterized in that a hole-sealing portion is provided at an edge portion of a wall portion of the cover, the wall portion of the cover corresponding to the at least one peripheral wall portion of the main-body case, and the hole-sealing portion is configured to close the punched hole formed on the stepwise portion of the main-body case when the cover is attached to the main-body case.