Pretensioner and safety belt assembly having the same
AssigneeHyundai Motor Company
InventorSung Hun Cho
Life of this patent
Estimating the term…
Abstract
A pretensioner and safety belt assembly may include includes a base member fixed to a vehicle, a torsion shaft having a first side and a second side rotatably supported on the base member, a torsion tube having a first end portion fixed on an external surface of the torsion shaft and a second end portion rotatably supported on the external surface of the torsion shaft wherein a belt configured to restrain an occupant is wound around an external surface of the torsion tube, a traction wire wound around an end portion of the torsion shaft on an opposite side to where the torsion tube is fixed to the torsion shaft in an opposite direction to a direction in which the belt is wound, and a pulling device configured to pull the traction wire to rotate the torsion shaft.
Claims8
A pretensioner comprising:
- a base member fixed to a vehicle;
- a torsion shaft having a first side and a second side rotatably supported on the base member;
- a torsion tube having a first end portion fixed on an external surface of the torsion shaft and a second end portion rotatably supported on the external surface of the torsion shaft, wherein
- a belt configured to restrain an occupant is wound around an external surface of the torsion tube;
- a traction wire wound around an end portion of the torsion shaft on an opposite side to where the torsion tube is fixed to the torsion shaft in an opposite direction to a direction in which the belt is wound;
- and
- a pulling device configured to pull the traction wire to rotate the torsion shaft.
A safety belt assembly comprising:
- a belt configured to restraining a passenger, and a pretensioner configured to apply tension by pulling an end portion of the belt,
- wherein the pretensioner includes:
- a base member fixed to a vehicle;
- a torsion shaft having a first side and a second side rotatably supported on the base member;
- a torsion tube having a first end portion fixed on an external surface of the torsion shaft and a second end portion rotatably supported on the external surface of the torsion shaft, wherein the belt is wound around an external surface of the torsion tube;
- a traction wire wound around an end portion of the torsion shaft on an opposite side to where the torsion tube is fixed to the torsion shaft in an opposite direction to a direction in which the belt is wound;
- and
- a pulling device configured to pull the traction wire to rotate the torsion shaft.
Dependencies are inferred from the claim text.