Patent ID: 9597980
Date: 2017-03-21
CPC Classifications: B60N

Claim:
1. A conveyance seat comprising: a pair of lower rails structured and arranged to be attached to a floor-side member; a pair of upper rails, each of the pair of upper rails being slidably assembled to a corresponding lower rail of the pair of lower rails; an electric drive mechanism that electrically slides each upper rail of the pair of upper rails with respect to the corresponding lower rail; a pair of brackets, each of the pair of brackets being assembled to an upper surface of a corresponding upper rail of the pair of upper rails; and a pair of buffer members, each of the pair of buffer members being arranged partially between the upper surface of the corresponding upper rail and a bracket of the pair of brackets, wherein: the electric drive mechanism includes a drive source that is fastened to one of the pair of brackets; a shaft that rotates by driving force of the drive source; a pair of screws, each screw of the pair of screws assembled to a respective rail of the pair of lower rails; a pair of nuts, each of the pair of nuts screwing onto a corresponding screw of the pair of screws; and a pair of gear subassemblies, each of the pair of gear subassemblies transmits rotation of the shaft to a corresponding nut of the pair of nuts; and the electric drive mechanism electrically slides the upper rails with respect to the lower rails by each nut moving relative to the corresponding screw by rotation of the shaft when the drive source is driven, wherein each bracket of the pair of brackets includes a mounting hole, an upper surface side and a lower surface side, the conveyance seat further comprises a pair of assembly members and a pair of collars, each of the pair of assembly members and each of the pair of collars are inserted into the mounting hole of a corresponding bracket of the pair of brackets and assemble the corresponding bracket to the upper surface of the corresponding upper rail, wherein each buffer member is structured and arranged such that each assembly member and each collar are inserted into a corresponding buffer member of the pair of buffer members, and the corresponding buffer member sandwiches an edge of the mounting hole from both the upper and lower surface sides, wherein each buffer member includes an upper portion, a lower portion, and a connecting portion that connects the upper portion and the lower portion, and the connecting portion is positioned in the mounting hole of the corresponding bracket, and wherein each collar is disposed between the corresponding assembly member of the pair of assembly members and the corresponding buffer member of the pair of buffer members.