| 摘要 |
A pretensioner for a three point vehicle safety restraint seat belt, has a mounting for one end of the seat belt. The mounting is a first member fixed to a load bearing part of the vehicle. A second member is attached to the end of the seat belt. A means is provided for moving the second member relative to the first member in a pretensioning direction in response to activation of a crash sensor. The mounting may be a flexible cable that functions as a slider bar. A piston-cylinder force reservoir may be used either to pull the slider bar via a carriage mounted on a rail, or to pull the cable directly. Return motion is preferably inhibited. The arrangement provides a space saving pretensioner suitable for two-door vehicles while allowing access to the vehicle rear.
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