Patent ID: 8905783

Claim:
A terminal box for a solar cell module, the terminal box being disposed on the solar cell module to electrically couple the solar cell module to a plurality of solar cell modules, the terminal box comprising: a box body sealed by a lid, wherein the box body comprises, inside the box body, a plurality of terminal plates coupled to an output terminal of the solar cell module, wherein the box body comprises, on a side surface of the box body, a cable introduction portion through which a connection cable for external coupling is introduced into the box body and wired therein to be coupled to the terminal plates, wherein a water blocking sleeve made of a rubber material is disposed around the connection cable to secure the connection cable to the cable introduction portion, wherein the water blocking sleeve comprises an inner sleeve in close contact with an outer circumferential surface of the connection cable, an outer sleeve disposed radially outside of the inner sleeve so as to surround the inner sleeve and be in close contact with the cable introduction portion, and a base, the inner sleeve and the outer sleeve each having one end coupled to the base to form an integral shape, wherein the inner sleeve comprises depressions and protrusions forming a plurality of grooves continuously in a circumferential direction on an interface between the inner sleeve and the connection cable, wherein the outer sleeve comprises depressions and protrusions forming a plurality of grooves continuously in the circumferential direction on an interface between a radially inner surface of the outer sleeve and the cable introduction portion, and wherein the water blocking sleeve is disposed between the cable introduction portion and the connection cable to seal the interface between the inner sleeve and the connection cable and the interface between the outer sleeve and the cable introduction portion.