FIELD: transportation.
SUBSTANCE: unit of vehicle passenger safety built into a back 1 of a seat includes a cavity 4 of cylindrical shape made at the rear side of the back opposite to a sitting person, where at its outer open edge there is a soft elastic protective surface 5 freely inserted, stretching from the cavity in a relay manner to a rear passenger at the moment of a road accident under the specified impact inertial load. Surface is an elastic flat body installed on a helical cylindrical spring 6 attached to the cavity bottom. Inside the spring there is an inertial mass 8 installed concentrically, being fixed by an outer end in the middle of a fixator plank 11, inserted by its ends between turns of the prestressed compressed spring into depressions 12 of cavity walls.
EFFECT: increased safety.
2 dwg
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