Locking apparatus for webbing retractor

Details Locking apparatus for webbing retractor Locking apparatus for webbing retractor

1989-05-18

1990-03-06

Jillions, John M.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

B60R 2238

Patent

active

049059289

ABSTRACT:
A locking mechanism applied to a retractor for winding up on a take-up shaft a webbing which fastens an occupant of a vehicle is designed to prevent the unwinding of the webbing when the vehicle suddenly decelerates. A lock wheel, that follows the rotation of the take-up shaft, maintains movable lock members rotating together with the take-up shaft at a position where the movable members are separated from fixed lock members. Upon sudden deceleration of the vehicle the lock wheel creates a rotational lag with respect to the take-up shaft, whereby the lock plates are engaged with the fixed lock members by the lock wheel, thereby preventing the rotation of the take-up shaft in a webbing unwinding direction.
The movable lock members are pressed in the direction of the axis of the take-up shaft by an elastic body projected from the lock wheel, whereby clatter due to the vibrations of the vehicle is abolished.

REFERENCES:
patent: 4749142 (1988-06-01), Saitow

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