Three-point seat belt device for vehicle

A three-point seat belt device for a vehicle, the three-point seat belt device comprising:

• a seat belt configured to be stretched in front of an occupant sitting in a sitting position of a seat of the vehicle;
• a retractor that is provided on a first side out of left and right sides of the vehicle relative to the sitting position of the seat and is configured to wind a first end out of ends of the seat belt;
• an inner tongue having a tongue hole;
• an inner buckle detachably coupled to the inner tongue;
• an outer support member fixed at a position that is on the first side relative to the sitting position and is lower than the sitting position of the seat;
• and
• an inner support member fixed at a position that is on a second side out of the left and right sides of the vehicle relative to the sitting position and is lower than the sitting position of the seat, wherein
• the seat belt passes through the tongue hole of the inner tongue, behind the outer support member, and behind the inner support member,
• a second end out of the ends of the seat belt is fixed to the inner buckle,
• the seat belt is configured to, when the inner tongue is coupled to the inner buckle, form an annular portion that is annular around a waist of the occupant sitting in the sitting position of the seat between the inner buckle and the outer support member, and
• the outer support member and the inner support member are located inward of the annular portion.