Safety belt retractor having webbing clamping means

Winding – tensioning – or guiding – Strand tensioning device – Tortuous course

Patent

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Details

2421074B, B60R 2242

Patent

active

050297694

ABSTRACT:
A retractor shaft is rotatably mounted in a loadbearing housing. A webbing clamping means consists of a clamping member mounted movably on the housing and a housing-fixed clamping face disposed opposite to and spaced from said member. The actuation of the clamping member is via an actuating nose on a ring which is provided with an internal toothing and which is rotatably mounted on a side plate of the housing. On one side of the retractor shaft two pawls are eccentrically and pivotally mounted in their center of gravity in such a manner that the engagement faces lie opposite the internal toothing of the ring. The pawls are driven by mass inertia forces against the force of a return spring into coupling engagement with the internal toothing of the ring. The longitudinal component of the arcuate movement of the actuating nose is transmitted directly via a pin and a slot to the clamping member.

REFERENCES:
patent: 3504867 (1970-04-01), Stevenson
patent: 3955774 (1976-05-01), Weman
patent: 4071204 (1978-01-01), Booth
patent: 4241886 (1980-12-01), Maekawa et al.
patent: 4570975 (1986-02-01), Kawaguchi et al.
patent: 4865263 (1989-09-01), Ervin
patent: 4928902 (1990-05-01), Tsuji

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