Abstract: The present disclosure relates to a gap prevention structure of a seat rail for a vehicle. The gap prevention structure includes: a lower rail configured to be fixed to a bottom of a vehicle body and to have a receiving space formed therein; an upper rail configured to have at least a portion thereof received in the receiving space and to slide in a longitudinal direction of the lower rail; a rolling bearing configured to be rotatably coupled to the upper rail and to roll and move in the receiving space in the longitudinal direction of the lower rail; and a gap prevention unit configured to limit rotation of the rolling bearing by pressing the rolling bearing while being inserted between the lower rail and the rolling bearing.

Abstract: Provided is a vibration isolating apparatus for isolating vibration from being transferred from a vehicle to a seat during idling and traveling. The vibration isolating apparatus provides an isolation structure applied between the upper and lower seat frames for a vehicle. A bearing unit having a low friction characteristic are applied so that horizontal vibration is effectively isolated without an up-and-down motion. A damping unit capable of attenuating the motion and frictional noise is applied.