Load limiting seatbelt retractor
First Claim
Patent Images
1. A seatbelt retractor comprising:
- a base;
a spool rotatably coupled to the base and including a piston portion;
a cylinder engaged with the piston portion and therewith defining a chamber, the piston portion movable from a first position to a second position;
a transfer plate translateably disposed in the chamber;
a cylinder lock in a first condition rotatably fixing the cylinder to the base; and
a damping fluid in the chamber;
the damping fluid being a heterogeneous mixture including hydrophobic nanoporous particles and a liquid.
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Accused Products
Abstract
A seatbelt retractor includes a base, a spool, a cylinder, a transfer plate, and a cylinder lock. The spool is rotatably coupled to the base and has a piston portion. The cylinder is engaged with the piston portion and therewith defines a chamber. The piston portion is movable from a first position to a second position. The transfer plate is translateably disposed in the first chamber. The cylinder lock in a first condition rotatably fixes the cylinder to the base. Damping fluid is in the chamber.
16 Citations
20 Claims
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1. A seatbelt retractor comprising:
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a base; a spool rotatably coupled to the base and including a piston portion; a cylinder engaged with the piston portion and therewith defining a chamber, the piston portion movable from a first position to a second position; a transfer plate translateably disposed in the chamber; a cylinder lock in a first condition rotatably fixing the cylinder to the base; and a damping fluid in the chamber; the damping fluid being a heterogeneous mixture including hydrophobic nanoporous particles and a liquid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A seatbelt retractor comprising:
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a base; a spool rotatably coupled to the base and including a piston portion; a cylinder engaged with the piston portion and therewith defining a chamber, the piston portion movable from a first position to a second position; a transfer plate translateably disposed in the chamber; a cylinder lock in a first condition rotatably fixing the cylinder to the base; and a damping fluid in the chamber; the spool defines an axis of rotation, the piston portion is centered on the axis of rotation, and the cylinder is centered on the axis of rotation; the first position of the piston defines a first chamber volume and the second position of the piston defines a second chamber volume; the chamber volume is divided into a first sub volume and a second sub volume by the transfer plate; and the transfer plate includes a plate aperture therethrough. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A seatbelt retractor comprising:
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a base; a spool rotatably coupled to the base and including a piston portion; a cylinder engaged with the piston portion and therewith defining a chamber, the piston portion movable from a first position to a second position; a transfer plate translateably disposed in the chamber; a cylinder lock in a first condition rotatably fixing the cylinder to the base; and a damping fluid in the chamber; wherein the piston portion has piston threads and the cylinder has cylinder threads and the piston threads and the cylinder threads are in threaded engagement with each other.
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Specification