The present invention relates to a vehicle seat belt, particularly to a vehicle seat belt in case that an external impact is applied to a vehicle seat belt can, even if the instantaneous pressure in the upper body of the passenger to prevent injury.
The present invention is provided with a tongue (tongue) coupled to the buckle to go free, formed of a bag made of a hollow shape, the belt A (10) wound around the upper body of the occupant; And one end of the suction pipe 22 is coupled to the belt A (10) and the other end is connected to a retractor fixed to a vehicle body, inhaling in the longitudinal direction inside the inlet tube 21, which air is injected and air is to the tongue of the belt a (10), an air injector 40 installed on the vehicle body by a signal from the control section 30 operate when coupled to the buckle the injection pipe (21; and a; belt B (20) each formed ) when the tongue of the belt, and injecting air to a (10), the belt a (10) separated from the buckle to an air aspirator (50) by a signal provided to the body of the control unit 30 operating the suction pipe through the via 22 to suck the air filled in the belt a (10) provides a vehicle seat belt, comprising a step of discharging to the outside.