PURPOSE: A shock-absorbing cushion for a vehicle is provided to sharply reduce fatigue even when driving for a long time, by absorbing the impact given in the vertical direction when the driver drives the vehicle. CONSTITUTION: A shock-absorbing cushion(1) for a vehicle comprises a main-air chamber(2); a sub-air chamber integrally connected to the main-air chamber through a connecting chamber(4); and an adjusting unit(5) buffing air coming into the sub-air chamber by pressing pressure. In the adjusting unit, a side of a pressing plate(7) is installed inside a casing(6), with a hinge pin(8). The casing receives the sub-air chamber. A leaf spring(9) pressing and buffing the pressing plate by proper spring coefficient is installed to an adjusting bolt(10). The adjusting bolt is combined to an adjusting elongated-hole(11) formed to the casing and is adjusted forward and backward.
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