To lower reaction generated in center links when an obstacle falls down directly on a hinge by providing at least one bending part on the center links to be the sliding part of a hinge mechanism having a sliding part.

The upper end part of a center link 3 is combined with a hinge on the feed inner side through a pin hole 6, and the lower end part is combined with the slide hole 4a of a body pedestal part 4. By detecting collision to an obstacle, the rear end of a hood 1 is raised so as to support the hood 1 with the right and left center links 3. Because the center links 3 are provided with bending parts 3a in the axial direction of the longitudinal direction of a vehicle, even if a load in the vertical direction of the hood is applied to the upper end parts of the center links 3 by falling down of an obstacle, bending moment in proportion to the offset quantity between the hinge 2 on the hood inner side as the pedestal part of the hood 1 and the body pedestal part 4 is generated in the center links 3, and reaction against the obstacle is lowered.