In an utility vehicle 10 equipped with a cover 12b displaceably attached to a chassis 12a through a suspension mechanisms 76, each suspension mechanism 76 comprises a shaft 80 installed between the chassis and cover, a guide member 84 having a plate member 82 provided on lower half of the shaft and multiple plates 84 (first plate 84a and second plate 84b) installed above and below the plate member to be contactable with the plate member and respectively formed at their centers with through holes for passage of the shaft, a compression spring 86 of roughly frustoconical shape for biasing the cover toward the chassis whose upper seating edge is attached to upper half of the shaft and lower seating edge is attached to periphery of the through hole of the cover, and an elastic member 90 of roughly frustoconical shape formed at its center with a through hole to pass the shaft therethrough, wherein the cover is configured to be formed in roughly frustoconical shape similar to the elastic member.
