Patent ID: 8733794

Claim:
A seat belt system, comprising: a storage case comprising a main body having a box shape and a storage portion, the main body having an opening formed thereon through which first and second tongues are inserted, the first tongue being attached to an end of a belt and to be connected to a first buckle on a seat side, the second tongue being movably attached to the belt and to be connected to a second buckle on the seat side, and a storage portion formed in a shape tapered in an insertion direction of the first and second tongues, protruding from the main body and comprising first and second inclined surfaces that are formed on both sides of a surface opposite a surface having the opening formed thereon and are inclined to guide insertion of the first and second tongues, wherein a tongue plate of the second tongue stored in the storage portion is held by a portion of the belt inserted through and folded back at a first belt insertion hole of the first tongue and by the first and second inclined surfaces.