Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1983-08-26
1985-01-22
Jillions, John M.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
280807, A62B 3500, B65H 7548
Patent
active
044947097
ABSTRACT:
A seat belt retractor includes a mechanism for keeping the belt reel from rotating in the winding direction at the urging of the winding spring when the reel is at an automatically memorized rotational position. The mechanism comprises an internal toothed gear wheel affixed to the reel shaft and which carries a hook adjacent the perimeter that is biased toward the reel shaft. A clutch ring is frictionally coupled to the gear wheel by a clutch spring and has an abutment. A gear carrier is rotatably received by the gear wheel and has external teeth. An idler gear rotatably carried by the gear carrier meshes with the internal gear teeth on the gear wheel. A protrusion on the idler gear engages the hook when the idler gear is in a memorized position relative to the hook, which position is dependent upon the relative rotational positions of the gear wheel and gear carrier. In the memorized position, the hook is held outwardly for engagement with an abutment on the gear carrier and stops rotation of the gear wheel, relative to the gear carrier, in the belt-winding direction. A memory spring connected between the gear carrier and the reel shaft urges the gear carrier in rotation in the belt-winding direction. A lever pivotably carried by the frame has a toothed portion that is releasably and selectively engageable with the teeth on the gear carrier by an actuating means that selectively urges the lever in a direction to engage the aforementioned teeth.
REFERENCES:
patent: 4199172 (1980-04-01), Fukunaga et al.
patent: 4228971 (1980-10-01), Arima et al.
patent: 4261531 (1981-04-01), Naitoh
patent: 4387862 (1983-06-01), Sakurada et al.
patent: 4456196 (1984-06-01), Takada et al.
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