Winding – tensioning – or guiding – Reeling device – With spring motor
Patent
1994-05-04
1995-12-26
Stodola, Daniel P.
Winding, tensioning, or guiding
Reeling device
With spring motor
B60R 2244
Patent
active
054780241
ABSTRACT:
A seat belt retractor (10) includes a seat belt webbing storage spool (14) that is rotatable in winding (retraction) and unwinding (withdrawal) directions. First and second springs (50 and 52) bias the spool (14) in the retraction direction and are stressed upon rotation of the spool in the belt withdrawal direction. A connector (54) interconnects the first and second springs (50 and 52). The connector has first and second portions (66 and 64) which are movable relative to each other. The first portion (66) is connected to the first spring (50), and the second portion (64) is connected to the second spring (52). An actuatable mechanism (56), when actuated, blocks rotation of the second portion (64) of the connector (54) in the belt retraction direction to block the spring force of the first spring (50) from acting through the second spring (52) and on the spool (14). The actuatable mechanism (56), when deactivated, releases the second portion (64) of the connector (54) to permit the first spring (50) to apply force through the connector (54) and the second spring (52) to the spool (14). The connector (54) includes a mechanism which acts between the first and second portions (66 and 64) for damping the force applied to the second spring (52) by the first spring (50) upon deactivation of the actuatable mechanism (56).
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Darling John P.
Stodola Daniel P.
TRW Vehicle Safety Systems Inc.
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