Abstract： |
The invention relates to a pre-tightening vehicle seat safety belt system, with range magnifying function, belonging to the vehicle passive safety technique, for calling back the belt in short time and same length, or calling back longer belt in the same time, to reach more effective pre-tightening effect, wherein said invention comprises a safety belt, a slide ring, a pre-tightening device, and a coiling device; one end of safety belt via the fixing point of safety belt is connected to the vehicle, while anther end is through the slide ring and pre-tightening device to connect the coiling device; said pre-tightening device comprises a range magnifying device, a lock device, and a power source; said range magnifying device comprises a fixed part and a movable part; the safety belt is coiled between the fixed part and the movable part; the range magnifying device makes the pre-tightening calling-back displacement of safety belt larger than the displacement of movable part driven by power source; at the end of pre-tightening process, the lock device will one-way lock the movable part. |
Relevancy information
