Water cut-off structure

1. A water cut-off structure comprising:

a shield electric wire having a braid covering a plurality of signal lines;

an exterior member through which the shield electric wire is inserted;

a grommet that is arranged at an opening of an attachment member, partitions one side and the other side of the attachment member from each other, and has an insertion portion through which the shield electric wire is inserted;

an exposed portion, which is arranged between the insertion portion and the exterior member and where the braid is exposed to an outside; and

resin that is provided at the exposed portion, is formed integrally with the exterior member and the insertion portion, and is poured to a space between the plurality of signal lines in the braid, a space between the braid and the plurality of signal lines, a space in the braid, a space between the braid and the exterior member, and a space between the braid and the insertion portion.

2. The water cut-off structure according to claim 1 , wherein

the exterior member is arranged on each of the one side and the other side of the attachment member,

the exposed portion is arranged between the insertion portion and each of the exterior member on the one side and the other side, and

the resin is provided at each of the exposed portions on one side and the other side.