Gap prevention structure of seat rail for vehicle

Patent metadata

Field	Value
Publication number	US-12466299-B2
Application number	US-202318470412-A
Country	US
Kind code	B2
Filing date	Sep 19, 2023
Priority date	Sep 26, 2022
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

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.

First claim

What is claimed is:

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.

Assignees

• Das Co Ltd

Inventors

• Park Jin Gu
• Jung Jae Chul
• Jo Hyun Gyu

Classifications

• B60N2/0868

  in a transversal direction · CPC title

• B60N2/0837

  pivoting · CPC title

• B60N2/0707

  J-shaped · CPC title

• B60N2/0818

  inside the rail · CPC title

• B60N2/0715 Primary

  C or U-shaped · CPC title