A seatbelt pretensioning retractor assembly for use in a vehicle is provided. The seatbelt pretensioning retractor assembly includes a housing adapted for being mounted to a frame and having an interior cavity, a pretensioner tube having an arcuate and curved shape, a pretensioner wheel rotatably mounted to the housing and fixedly coupled to a spindle, a pretensioner rod disposed within the tube and a guide plate having a guide portion and a rod guide. The pretensioner rod engages with the pretensioner wheel during pretensioning. In addition, the pretensioner wheel includes a body portion, a pair of flanges radially extending from the body portion and a plurality of vanes with the cavities formed between adjacent two of the plurality of vanes.

A seat belt pretensioner for use in a seat belt pretensioning retractor assembly includes a pretensioner tube in fluid communication with a gas generator, and a driving element with a piston disposed inside the pretensioner tube and formed a flexible elongated rod. At least a portion of an outer surface of the elongated rod spaced from an inside surface of the pretensioner tube defines at least one clearance space to be filled by the deformed elongated rod in the event that a gas pressure from the gas generator is applied to the piston when a sprocket is engaged with the elongated rod causing an overpressure condition in an actuation volume defined between the piston and the gas generator within the pretensioner tube.

A vehicle occupant restraint device for the protection of a vehicle occupant in a vehicle seat comprises plural restraining elements and a controller. The controller differentiates between a first situation in which the vehicle seat is in a position within the range of a standard position, and a second situation in which the vehicle seat with the vehicle occupant is in a position beyond the standard position. When the first situation is given, the controller activates a tensioning unit for tensioning a seat belt of the second restraining element and an airbag of the first restraining element. When the second situation is given, a third restraining element integrated in the vehicle seat and/or operatively connected with the vehicle seat can be activated and/or connected by the controller so that the vehicle seat is moved initially via the third restraining element to a position within the range of the standard position.

A pyrotechnic tightening device of a safety belt unit having a force-limiting unit, comprising—a gas generator, and—a piston, which is guided in a pipe and which closes a pressure chamber inside the pipe, wherein—a pressure can be applied to the pressure chamber by the gas generator, and—the piston can be driven by the pressure present in the pressure chamber to perform a tightening movement which can be transmitted by means of a force-transmitting unit to the safety belt, wherein—the piston is formed in two parts consisting of a main body and a contact part arranged on the side of the main body facing the force-transmitting unit, wherein—the contact part has a greater strength than the main body, wherein—the main body surrounds the contact part form-fittingly at the end face facing the force-transmitting device.

The present invention relates to a reinforcement cap for reinforcing durability of a pipe used in a seat belt, and more particularly, a reinforcement cap for preventing a pipe from being broken due to explosion of an explosion device stored in the pipe or preventing the explosion device fixed by pipe closing work from being discharged out of the pipe so that an explosive force of the explosion device is transferred to a place other than driving balls stored in the pipe, and a pipe reinforcement cap for a seat belt for preventing a malfunction of the seat belt.

A seatbelt pretensioner system for use in a seatbelt retractor assembly having a spindle and a frame includes a housing adapted for being mounted to the frame and having an interior cavity, a pretensioner tube having a first tube end in fluid communication with a gas generator and a second tube end in fluid communication with the interior cavity of the housing, a pinion being rotatably mounted in the housing and fixedly coupled to the spindle adapted for taking up seatbelt webbing during pretensioning, and a pretensioner rod disposed inside the pretensioner tube. Further, the pretensioner rod has a proximal end disposed towards the gas generator and a distal end disposed away from the gas generator. In addition, the housing is formed with at least two levels including an inboard portion and an outboard portion to store the pretensioner rod after pretensioning.

A seat-belt retractor having a seat-belt spool and a drive device, both the seat-belt spool and the drive device being modular sub-assemblies and designed as a seat-belt spool module and a drive device module, and said seat-belt spool module and drive device module being interconnectable in different orientations relative to one another via a structural interface.

A seatbelt retractor for a seat belt device in a vehicle. The retractor including a frame and a spool. The spool is configured to be fixed to one end of a webbing which is wound around the spool. A pretensioner device configured to rotate the spool in response to an excessive acceleration of the vehicle. The pretensioner device comprises a power transmission element carried in a pretensioner tube that is driven by a piston located in the pretensioner tube. The pretensioner device includes a gas generator for driving the piston into the power transmission element. The pretensioner device includes a seal system that includes a stopper tube located in a downstream end of the pretensioner tube to create a stop location for the piston to prevent operating gas from exiting the end of the pretensioner tube.

A webbing take-up device including: a spool; a tube-shaped cylinder; a fluid supply unit; a rotating member including thrust teeth in a radial pattern about a rotation central axial line formed to faces that oppose one another in an axial direction, and including a tapered portion formed to a rotation outer peripheral side end portion of each of the thrust teeth and having a rotation axial direction dimension that decreases on progression toward a rotation radial direction outside, the spool being rotated in the take-up direction by the rotating member rotating toward one side; and a moving member that is moved toward the axial direction leading end side of the cylinder under pressure of the fluid to cause the rotating member to rotate toward the one side by being moved in an engaged state with the thrust teeth of the rotating member.

A seat belt pretensioner of a vehicle include: a displacement generator to generate a linear displacement in a seat frame; and a webbing guide that receives the linear displacement generated by the displacement generator and pulls a webbing. In particular, the webbing extends from a retractor fixed to the seat frame to the outside of the seat.