Winding – tensioning – or guiding – Reeling device – With spring motor
Patent
1998-02-09
1999-08-03
Jillions, John M.
Winding, tensioning, or guiding
Reeling device
With spring motor
2423822, B60R 22415, B60R 2246
Patent
active
059314010
ABSTRACT:
A belt retractor for a vehicle seat belt comprises a belt reel rotatably mounted in a housing, a webbing reeled on the belt reel, a locking mechanism for blocking belt reel rotation, a planetary gearing including a sun gear connected non-rotatably to the belt reel, a ring gear secured to the housing, and at least one planet gear having an outer toothing, as well as a switch unit for determining the buckled-up condition on the basis of the length of the unwound webbing. The switch unit may be electrically coupled to a control unit for activating a gas generator and includes a switch lever actuatable by the movement of the planet gear. The switch lever is configured as a switch rocker pivotable between a first and a second position. The planet gear comprises at least one switch cam directly engaging the switch rocker and moving the switch rocker from the first position into the second position when a predetermined length of unwound webbing is reached.
REFERENCES:
patent: 3880379 (1975-04-01), Booth
patent: 4811912 (1989-03-01), Takada
patent: 5474247 (1995-12-01), Bareiss
patent: 5501293 (1996-03-01), Borjesson et al.
patent: 5772145 (1998-06-01), Bareiss et al.
patent: 5794879 (1998-08-01), Huber
Jillions John M.
TRW Occupant Restraint Systems GmbH
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