Patent ID: 8109568
Filing Date: 2012-02-07
Classification: B60N,B60R

Abstract:
1. A vehicle seat comprising a seat bottom; a seat back pivotably attached to the seat bottom; a seat belt; said seat bottom having a support frame to be attached to a vehicle body, and a bottom cushion supported by the support frame; said support frame being arranged not to be moved in a front-and-back direction with respect to the vehicle body by an unpreferable external force which abruptly moves a vehicle seat occupant forward; said bottom cushion being arranged to be moveable in a front-and-back direction with respect to the support frame; a pretensioner disposed between the bottom cushion and the support frame to move the bottom cushion rearward with respect to the support frame when the unpreferable external force is generated; wherein a tip anchor and a tongue anchor of the seat belt are arranged to move in conjunction with the bottom cushion moving rearward to further tighten the seat belt when the pretensioner is actuated; wherein a moving distance S of the tip anchor and the tongue anchor when the pretensioner is actuated is set larger than a moving distance T of the bottom cushion; and further comprising rear link arms journaled to the support frame, wherein a rear portion of the bottom cushion is coupled with the rear link arms so that the rear link arms are pivoted as the bottom cushion moves rearward, and wherein the tip anchor and the tongue anchor are fixed to the rear link arms so that the seat belt is further tightened when the rear link arms are pivoted.