| 摘要 |
PURPOSE: A suspension system of a seat for a vehicle is provided to improve riding comfort by controlling a suspension of the seat in real time according to the traveling state on a road and the loaded state of loads. CONSTITUTION: A suspension system of a seat for a vehicle includes a cylinder mounted on a floor panel of a vehicle body; an air spring(10) comprised of a piston(14); a link installed between a lower frame and the vehicle body floor panel; an air-passing through pipe(16) connected to the inside of a cylinder(12) of the air spring; a leveling valve(18) mounted to the end portion of the air-passing through pipe; an air supply pipe(20) and an air exhaust pipe(22) each connected to the inlet side of the leveling valve; and a shock absorber installed between a seat frame and the floor panel. A seat-upper acceleration sensor(28) and a height-measuring sensor(30) are mounted to a frame of the bottom surface of a seat cushion and are connected to an ECU(Electronic Control Unit,26) together with an acceleration sensor(32) installed to an axle. A current signal for controlling the opening degree of the leveling valve is sent to the ECU, according to the input signals of the seat-upper acceleration sensor, the height-measuring sensor, and the axle acceleration sensor. Accordingly, the quantity of air supplied to the inside of the cylinder is controlled.
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