RAIL DEVICE FOR VEHICLE SEAT

Provided is a rail apparatus of a seat for a vehicle. According to the present invention, an upper part bearing is mounted on a lower rail and a lower part bearing is mounted on a lower plate. Additionally, an upper rail is movably disposed between the upper part bearing and the lower part bearing. The upper rail is assembled so that there is no gap between the upper part bearing and the lower part bearing. Therefore, the upper rail can be moved smoothly between the upper part bearing and the lower part bearing without causing movement or noise. The rail apparatus of the seat for the vehicle of the present invention comprises: the upper rail; the lower rail; the upper part bearing; the lower plate; the lower part bearing; and a bearing shaft. 본 발명은 로워레일에 상부베어링을 장착함과 함께 로워플레이트에 하부베어링을 장착하고, 어퍼레일을 상부베어링과 하부베어링 사이에 이동 가능하게 배치하되, 어퍼레일을 상부베어링과 하부베어링 사이에 간극없이 밀착되도록 조립함으로써, 어퍼레일이 상부베어링과 하부베어링 사이에서 유동 및 소음 발생없이 원활하게 이동될 수 있도록 한 차량용 시트의 레일 장치를 제공하고자 한 것이다.