A long rail assembly for use in an automotive vehicle includes a fixed long rail, a rail drive assembly having a drive wheel for transposing the rail drive assembly along the fixed long rail, an upper gearbox attached to a vehicle seat, and an auto-centering quick connection mechanism for operatively coupling a guide pin extending from the upper gearbox to the drive wheel when the vehicle seat is attached to the rail drive assembly. The auto-centering quick connection mechanism further automatically rotates the guide pin to a home position when the vehicle seat is decoupled from the rail drive assembly.

A vehicle seat sliding device includes: a lower rail fixed to a vehicle floor; an upper rail slidably engaging with the lower rail and supports a vehicle seat upward; a nut member fixed to a first rail which configures one side of the lower rail and the upper rail; a screw rod screwed into the nut member; a drive unit rotating the screw rod; and a support supporting the screw rod on a second rail which configures the other side of the lower rail and the upper rail. The support includes a holding member that is provided with an insertion hole into which the screw rod is inserted and that is fixed to the second rail, and a holding nut that is provided with a through-hole into which the screw rod is inserted and that is screwed to a screwing portion provided on the screw rod or the holding member.

A vehicle seat support assembly includes: a front link; and a front link bracket coupled to an upper rail of a vehicle seat and including a sagging support portion configured to inhibit sagging of the front link toward the upper rail. In particular, the front link is pivotally coupled to the front link.

A vehicle floor structure includes: a center floor; a plurality of longitudinal members attached to a bottom surface of the center floor; and a battery assembly having a battery case disposed under the center floor and a through bolt passing through the battery case, wherein the through bolt is vertically aligned with respect to at least one longitudinal member among the plurality of longitudinal members, and the through bolt is joined to the at least one longitudinal member.

A sliding unit for a vehicle includes: a rail having a bottom surface, both side surfaces and a top surface, the rail configured to extend in a front-rear direction, be bent, and then extend in a left-right direction; a moving part slidably disposed on the rail to slide along the rail to move in the front-rear direction or in the left-right direction; a magnetic force part disposed in the moving part and configured to be locked to or unlocked from the rail through a magnetic force; and ground parts disposed on the moving part, electrically connected to the magnetic force part, and grounded with the rail to supply power from the rail to the magnetic force part.

A long rail assembly for use in an automotive vehicle includes a fixed long rail, a rail drive assembly having a drive wheel for transposing the rail drive assembly along the fixed long rail, an upper gearbox attached to a vehicle seat, and an auto-centering quick connection mechanism for operatively coupling a guide pin extending from the upper gearbox to the drive wheel when the vehicle seat is attached to the rail drive assembly. The auto-centering quick connection mechanism further automatically rotates the guide pin to a home position when the vehicle seat is decoupled from the rail drive assembly.

A vehicle seat support assembly includes: a front link; and a front link bracket coupled to an upper rail of a vehicle seat and including a sagging support portion configured to inhibit sagging of the front link toward the upper rail. In particular, the front link is pivotally coupled to the front link.

A vehicle floor structure includes: a center floor; a plurality of longitudinal members attached to a bottom surface of the center floor; and a battery assembly having a battery case disposed under the center floor and a through bolt passing through the battery case, wherein the through bolt is vertically aligned with respect to at least one longitudinal member among the plurality of longitudinal members, and the through bolt is joined to the at least one longitudinal member.

A power supply and signal transmission device for a vehicle seat rail is provided. The device includes a contact-type power supply unit configured to supply power to an electrical device mounted on a seat, and a contact-type signal transmission unit configured to transfer seat drive control signals. The contact-type power supply unit and the contact-type signal transmission unit are directly mounted on the seat rail.

A seat support assembly has a lower member with a first channel extending in a front-back direction of the seat support assembly and an upper member positioned above the lower member and having a second channel extending in the front-back direction. A first linkage has a lower end pivotably coupled to the lower member and translatable in the front-back direction by way of the first channel and an upper end pivotably coupled to the upper member. A second linkage has a lower end pivotably coupled to the lower member and an upper end pivotably coupled to the upper member and translatable in the front-back direction by way of the second channel. The first and second channels are offset from one another in the front-back direction.