A tensioner (10) for a vehicle safety device is provided with a tubular casing (12) in which a piston (18) is movably supported as well as with a closure member (26) closing the tubular casing (12) on the front face and forming a cable guide (38) for a tensioning cable (28) which may be connected to a belt buckle or an end fitting (34) and in which cable guide the tensioning cable (28) is deflected in arc shape. Further, the tensioner (10) comprises an inflator (24) accommodated in the closure member (26), wherein the tubular casing (12) includes a receiving area (14) for receiving the closure member (26) as well as a fastening portion (16) serving for fastening the tensioner (10) to a vehicle frame.

A pretensioner for a seat belt device in a vehicle includes a cable connected to the seat belt device at a first end of the cable. The pretensioner also includes a base frame containing a pipe. A rod is located within the pipe, and one end of the rod is configured to be subjected to pressure from gas provided by a gas generator. A second end of the cable and a second end of the rod are connected to a swage block. The rod is configured to be driven within the pipe in the pretensioning direction by gas from the gas generator when the gas generator initiates in response to an acceleration of the vehicle greater than a predetermined high acceleration thereby causing the swage block to move and pull the cable to thereby cause a corresponding movement of the seat belt device.

A restraining device for a motor vehicle occupant, having a seatbelt that is equipped with a belt pretensioner via which the tensile force on the seatbelt can be increased. A vehicle seat is equipped with a tubular receptacle as a seat cross tube that simultaneously accommodates the belt pretensioner in its interior. The belt pretensioner, which is designed as a linear pretensioner, has a coupling element for the seatbelt, which coupling element is translationally movable along an axis of motion in the tubular receptacle and is connected to a drive cylinder by a tensioner. For this purpose, the seatbelt is reduced to approximately half its width by rolling up opposite side edges by a guide element so that the belt pretensioner can be accommodated without any difficulty in a seat cross tube with a small inside diameter.

A pretensioner for a seat belt device in a vehicle includes a cable connected to the seat belt device at a first end of the cable. The pretensioner also includes a base frame containing a pipe. A rod is located within the pipe, and one end of the rod is configured to be subjected to pressure from gas provided by a gas generator. A second end of the cable and a second end of the rod are connected to a swage block. The rod is configured to be driven within the pipe in the pretensioning direction by gas from the gas generator when the gas generator initiates in response to an acceleration of the vehicle greater than a predetermined high acceleration thereby causing the swage block to move and pull the cable to thereby cause a corresponding movement of the seat belt device.

A restraint system for helping to protect an occupant of a vehicle having a roof and a cabin with a seat for the occupant includes an airbag having a stored condition within a base of the vehicle seat and being inflatable to deploy upwards in the cabin and between legs of the occupant to a deployed condition in front of the occupant. The airbag including a lower end having a pair of projections spaced apart in a forward-rearward direction of the vehicle. The airbag being configured to utilize the vehicle seat as a reaction surface for restraining the movement of the airbag in response to occupant penetration into the airbag.

A restraint system for helping to protect an occupant of a vehicle having a roof and a cabin with a seat for the occupant includes an airbag having a stored condition within a base of the vehicle seat and being inflatable to deploy upwards in the cabin and between legs of the occupant to a deployed condition in front of the occupant. The airbag including a lower end having a pair of projections spaced apart in a forward-rearward direction of the vehicle. The airbag being configured to utilize the vehicle seat as a reaction surface for restraining the movement of the airbag in response to occupant penetration into the airbag.

A pretensioner includes a wire having one end connectable to webbing that restrains an occupant of a vehicle; a piston connected to another end of the wire; a cylinder that slidably accommodates the piston; a housing through which the wire passes and that holds the cylinder; and a gas generator that supplies gas to the piston through a gas chamber within the housing, the gas being for operating the piston in a retraction direction of the wire. The piston includes, at one end of a gas chamber side, a cylindrical portion that extends in an axial direction of the piston, and an initial volume of the gas chamber is adjusted by adjusting a volume of an inner space of the cylindrical portion.

The invention relates to a belt tensioner (30) for a vehicle occupant restraint system comprising a housing (32), a working chamber (34) into which the compressed gas released in the case of restraint is flowing, a pull rope (24) extending through an opening (36) within the housing (32) and a sealing bush (10) for sealing the working chamber (34) against the opening (36) between the pull rope (24) and the housing (32), with the sealing bush (10) comprising a sleeve (16) and a sealing element (12) and the sealing bush (10) being pressed onto the pull rope (24) by plastic deforming of the outer sleeve (16).

A cable reel restraint device comprises a cable reel, a retractable cable, first and second springs, first and second attachment interfaces, and a preload selection control. The retractable cable is configured to extend from and retract onto the cable reel. The first spring is configured to exert force for preloading the second spring, and the second spring is configured to exert force for retracting the retractable cable. The first attachment interface is coupled to the cable reel by a first spherical bearing, and the second attachment interface is coupled to the retractable cable by a second spherical bearing. Moreover, the first and second attachment interfaces are configured for being fastened to first and second attachment points. The preload selection control is configured to select a particular preload magnitude and cause the first spring to preload the second spring with a load of the particular preload magnitude.

A pretensioner includes a drive wheel provided with a plurality of engaging teeth for rotating a spool, the spool for winding up a webbing for fastening a passenger; and an elongated resin component that transmits power to the drive wheel during an emergency, wherein the plurality of teeth is positioned such that, when one engaging tooth is caused to contact a tip of the elongated resin component in an approximately planer manner, another engaging tooth adjacent to the one engaging tooth in a direction opposite to a rotation direction can contact a side surface of the elongated resin component.