Patent ID: 8723034

Claim:
A junction box, comprising: a cable connecting box, having a receiving cavity and four box walls surrounding the receiving cavity, the four box walls comprise a front box wall, a rear box wall opposite to the front box wall and two side box walls connecting with front and rear box walls; a cover formed with a plurality of separating walls extending from a peripheral thereof, each of the separating walls abuts against an inside surface of a corresponding one of the four box walls when the cover covers the cable connecting box, a preventing blade extending from a bottom of the separating wall corresponding to the rear box wall and abutting against an inside surface of the rear box wall, and a sealing slot recessed in an outside surface of each of the separating walls, and a bump disposed within the sealing slot; and an o-ring set in the sealing slot to seal the separating walls of the cover and the four box walls of the cable connecting box, and the bump forcing the o-ring toward an opposing portion of the sealing slot.