Seat belt retractor with springs connected in series and motoriz

Details Seat belt retractor with springs connected in series and motoriz Seat belt retractor with springs connected in series and motoriz

1992-07-13

1994-05-31

Stodola, Daniel P.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

2421075, B60R 2244, B60R 2246, B65H 7548

Patent

active

053162331

ABSTRACT:
A seat belt retractor is formed of a frame having a pair of side plates which face each other and having a back plate which interconnects the side plates, a reel shaft rotatably mounted between the side plates and having both ends projecting to exterior areas of the side plates, power springs linked in series for energizing the reel shaft in a direction of retracting a seat belt. The power springs have different spring constants. The retractor has a force adjusting device for enlarging force of retracting the seat belt by taking up the power spring having a small spring constant and for weakening the force by releasing the power spring of the small spring.

REFERENCES:
patent: 4162772 (1979-07-01), Shimogawa et al.
patent: 4478433 (1984-10-01), Taguchi et al.
patent: 4579294 (1986-04-01), Sakakibara et al.
patent: 4640472 (1987-02-01), Epple
patent: 4809925 (1989-03-01), Takada

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