Land vehicles – Wheeled – Attachment
Patent
1992-02-19
1994-02-22
Focarino, Margaret A.
Land vehicles
Wheeled
Attachment
297480, B60R 2246
Patent
active
052881059
ABSTRACT:
A vehicle safety belt pre-tensioning system includes a slider to which a cable is attached. The slider is affixed to a safety belt buckle and to a cable for pulling the buckle forcibly downward to secure a seat occupant upon occurrence of an emergency condition. The cable is arranged parallel to a guide groove of a guide plate and is guide into a sensor mechanism via a roller. The other end of the cable is affixed to a piston. A portion of the cable is fixed in a tube which is arranged in the sensor mechanism. The sensor mechanism activates a trigger upon detecting an emergency condition. Between the sensor mechanism and the piston, a coil spring is held in a compressed state. Within the sensor mechanism, the tube is retained by a pawl which also contacts a link which is positioned proximate a pin, or trigger, associated with a sensor mass. When vehicle motion indicatives an emergency condition, the sensor mass moves so as to cause the pin to break the link. Thus, the pawl moves so as to release the tube. When the tube is released the piston is moved away from the sensor mechanism by the sudden expansion of the compressed coil spring. This pulls the cable, causing the slider and buckle to be pulled rapidly downward, tightening a safety belt attached to the buckle for securing the seat occupant. The assembly is attached to a side of an upper rail of a seat mounting.
REFERENCES:
patent: 4705296 (1987-11-01), Andersson et al.
patent: 4768809 (1988-09-01), Andersson et al.
Ikegaya Isao
Nishikawa Naotoshi
English Peter C.
Focarino Margaret A.
Fuji Kiko Co. Ltd.
Kananen Ronald P.
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