Energy absorbing seat belt retractor having a torsion bar

Details Energy absorbing seat belt retractor having a torsion bar Energy absorbing seat belt retractor having a torsion bar

1998-10-13

2000-05-23

Jillions, John M.

Winding, tensioning, or guiding

Reeling device

With spring motor

B60R 2228

Patent

active

060657065

ABSTRACT:
A torsion bar (50) and seat belt retractor (20). The torsion bar (50) has a circular cross section where the torsion bar is formed as a cold headed extruded part and wherein the grain structure of the metal is aligned along the axis (axial direction) of the bar generally in the center of the bar and the grain structure smoothly diverges from the axial direction near an end formation (52a,b). The torsion bar is later annealed and twisted about 180 degrees.
The seat belt retractor (20) includes: a frame (22) to rotationally support the torsion bar and spool (30). The torsion bar (30) is characterized by an elastic deformation zone and a sharp onset into a plastic deformation zone. The spool is operatively connected to rotate with the torsion bar. The retractor also includes a locking device, activated during a vehicle accident and operatively linked to the torsion bar for preventing one side of the torsion bar from rotating while permitting the other side and the spool to rotate once loaded by the occupant.

REFERENCES:
patent: 3741494 (1973-06-01), Fiala
patent: 3857528 (1974-12-01), Fiala
patent: 3881667 (1975-05-01), Tandetzke
patent: 3961761 (1976-06-01), Wiesbock
patent: 4322046 (1982-03-01), Tanaka et al.
patent: 5320385 (1994-06-01), Schmid et al.
patent: 5344095 (1994-09-01), Frei
patent: 5526996 (1996-06-01), Ebner et al.
patent: 5529258 (1996-06-01), Dybro et al.
patent: 5624083 (1997-04-01), Modinger et al.
patent: 5628469 (1997-05-01), Fohl
patent: 5722611 (1998-03-01), Schmid et al.
patent: 5738293 (1998-04-01), Fohl
patent: 5749601 (1998-05-01), Knoll et al.
patent: 5899402 (1999-05-01), Koning

Affiliated with

Also associated with

Rating

Energy absorbing seat belt retractor having a torsion bar does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Energy absorbing seat belt retractor having a torsion bar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Energy absorbing seat belt retractor having a torsion bar will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1831313