Gap prevention structure of seat rail for vehicle
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.
1 . A gap prevention structure of a seat rail for a vehicle, the gap prevention structure comprising:
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.
2 . The gap prevention structure of a seat rail for a vehicle of claim 1 , wherein the gap prevention unit comprises:
an elastic moving part configured to elastically move in the longitudinal direction of the lower rail by an elastic force of a first spring that is inserted into one side of the upper rail; and
a fixed operating unit configured to have at least a portion thereof disposed in the receiving space and to press the rolling bearing by an elastic restoring force of the elastic moving part.
3 . The gap prevention structure of a seat rail for a vehicle of claim 2 , wherein the first spring applies the elastic restoring force in a direction in which the elastic moving part approaches the rolling bearing.
4 . The gap prevention structure of a seat rail for a vehicle of claim 2 , wherein the elastic moving part comprises:
a damper configured to be connected to the first spring and to press the rolling bearing in a state in which the first spring is elastically restored; and
a lever configured to be coupled to a fixed rotating shaft hinge-coupled to the upper rail and be rotatable about the fixed rotating shaft, and configured to be coupled to a moving rotating shaft hinge-coupled to the damper and be rotatable about the moving rotating shaft.
5 . The gap prevention structure of a seat rail for a vehicle of claim 4 , wherein the fixed rotating shaft and the moving rotating shaft are formed side by side with each other.
6 . The gap prevention structure of a seat rail for a vehicle of claim 4 , wherein the upper rail comprises a guide hole that guides elastic movement of the damper.
7 . The gap prevention structure of a seat rail for a vehicle of claim 4 , wherein the fixed operating unit comprises:
a fixed guide configured to rotate the lever eccentrically about the fixed rotating shaft by pressing one side of the lever; and
a second spring configured to apply an elastic restoring force in a direction in which the fixed guide gets farther away from the lever.
8 . The gap prevention structure of a seat rail for a vehicle of claim 7 , wherein the lever comprises:
a pair of side portions configured to have the fixed rotating shaft and the moving rotating shaft formed therein; and
a connection portion configured to be disposed between the pair of side portions and to have at least a portion thereof formed to be bent in a direction closer to the fixed guide.