A vehicle includes a vehicle seat having a first side and a second side spaced cross-seat from each other. A seatbelt buckle is fixed to the first side. A seatbelt assembly includes a latch plate engageable with the seatbelt buckle and a webbing having a lap portion defined by the latch plate when the latch plate is engaged with the seatbelt buckle. A hook is retractably supported by the second side of the vehicle seat. The hook is retractable relative to the vehicle seat from a first position to a retracted position. The hook is engageable with the lap portion of the webbing as the hook retracts. A lock includes a pin engageable with the hook when the hook is in the first position and the retracted position. A spring biases the pin toward the hook. A pyrotechnic device is operatively coupled to the lock to disengage the pin from the hook.

A seat assembly includes a seat portion having a frame assembly, a carrier assembly and a displaceable platform operably coupled to the carrier assembly. The displaceable platform is operable between a use position and a deployed position. A retraction mechanism includes a first bracket operably coupled to the frame assembly, and a second bracket operably coupled to the displaceable platform. The first and second brackets are interconnected by an actuator that is operable between at-rest and actuated positions. The second bracket moves from a first position to a second position as the actuator moves from the at-rest position to the actuated position. At least one tether member is operably coupled to the first bracket and includes a body portion interlaced between the first and second brackets of the retraction mechanism.

A seat belt tensioning device with a gas generator for generating a compressed gas, a piston driven by the compressed gas, a tension cable which is connected to the piston and is connectable to a seat belt component to be set into a tensioning movement, a tensioner tube for receiving and guiding the piston, and a guide block that forms a cable guide and in which a receptacle receiving the gas generator and a pressure chamber connected in terms of flow to the receptacle are formed, wherein the guide block is connected to the tensioner tube, and the tension cable runs rectilinearly in a piston movement direction from the tensioner tube through the pressure chamber, wherein the guide block forms a linear guide adjoining the pressure chamber such that the tension cable can be led out of the guide block on the side opposite the tensioner tube.