| 摘要 |
A seat rail structure for a vehicle is provided to prevent the collision due to vehicle vibration between a lower rail and a bearing by modifying a structure in a rail groove. A seat rail structure for a vehicle comprises rollers(50,60,70) aligned on an upper rail(3) in multiple rows such that the rollers(50,60,70) are spaced apart from each other in the longitudinal direction. The upper rail(3) slidably moves through the rollers(50,60,70) along a rail groove(2e) of a lower rail(2). The roller(50) includes left/right bearing pins(51,52) coupled to each other about transverse center lines(C1,C2). The outer peripheral surface of a left bearing(53) makes contact with one of an upper bottom surface(2b) and an upper surface(2d), and a right bearing(54) makes contact with the other surface. The roller(60) includes left/right bearing pins coupled to each other about transverse center lines(C3,C4) and left/right bearing making contact with one of the upper bottom surface(2b) and the upper surface(2d), respectively. |
