Passive seat belt retractor assembly

Details Passive seat belt retractor assembly Passive seat belt retractor assembly

1988-03-21

1989-08-15

Jillions, John M.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

2421074A, 280803, 280807, 280806, B60R 2240

Patent

active

048567280

ABSTRACT:
A seat belt retractor assembly particularly adapted for mounting in a motor vehicle door as part of a passive belt system. The retractor includes both an inertia sensitive actuator and a tension relief or "comfort" features. The retractor further includes an operating system which renders the inertia sensitive actuator and comfort mechanism inoperative while the vehicle door is being opened or closed to allow the belt webbing to be freely withdrawn and retracted onto the retractor spool during such door movement. The operating system is actuated by an electrical solenoid. The force output and size of the electrical solenoid are minimized by employing a system which uses rotation of the retractor spool which "cocks" a latch plate member against spring tension and using the solenoid only to release the release plate when necessary.

REFERENCES:
patent: 4428600 (1984-01-01), Doty
patent: 4651947 (1987-03-01), Tsukamoto
patent: 4757954 (1988-07-01), Doty
patent: 4763853 (1988-08-01), Andersson

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