| 摘要 |
PURPOSE: A seat transfer track for a vehicle is provided to prevent or reduce noise by locating balls bearing the load of a seat to the bottom ends of a fixed rail and distributing load of the seat, and transferring the balls by line contact with the fixed rail and a transfer rail. CONSTITUTION: A seat transfer track for a vehicle comprises fixed rails(10) having fixing pieces(11) to be fastened by bolts in a state of coming in contact with the floor surface of a vehicle body, and having grooves, the center of which is prominent outward to insert balls; transfer rails(20) forming bracket-fixing parts, to which brackets are combined, to the top and forming grooves to insert the balls in a state of downwardly bending the ends of the bracket-fixing parts; and the balls inserted between the grooves of the fixed rails and the grooves of the transfer rails to make the transfer rails moved within the fixed rails by a point contact. The fixed rail has first ball-receiving parts(12) of a semi-circular shape at the ends of the fixing piece; vertical pieces(13) perpendicularly bent and stood upward from the ball-receiving parts; second ball-receiving parts(14) of a semi-circular shape formed to the tip of the vertical pieces; and horizontal pieces(15) perpendicular to the second ball-receiving parts. The transfer rail is situated in the open surface of the fixed rail, to function as a bracket supporting a seat. The transfer rail has first and second ball-receiving parts(21,22) each corresponding to the first and second ball-receiving parts of the fixed rails. Transfer units(30) with first and second balls(31,32) and ball support units(33) are installed between the fixed rails and the transfer rails.
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