Patent ID: 7975797

Claim:
A vehicle pop up hood apparatus, comprising: an actuator mounted at a vehicle; a rod that extends towards a hood upper side as a result of operation of the actuator, pushes a hood rear portion, which is supported such that it may open and close with respect to a vehicle body side via a hood hinge, towards a hood upper side, and maintains the hood at a pushed up position; and an energy absorbing mechanism portion, which, in a state in which the hood is maintained in the pushed up position, when a collision load equal to or greater than a predetermined value acts from a hood upper side upon an area near a pushed up region pushed up by the rod, slides a distal end portion of the rod towards a vehicle rear side along a pushed up surface of a hood rear portion, while deforming the rod by bending, thereby absorbing energy from a collision body; wherein between a point at which a first period peak load is generated before the rod begins to bend, and a point at which a final period peak load is generated when a hood lowers and a base of a hood side attachment member of a hood hinge contacts another element, an angle θ between an axis of the rod and the pushed up surface increases from a first value to a second value, and then decreases from the second value to a third value, thereby increasing sliding resistance and generating an intermediate peak load; and wherein when the rod contacts a bent portion of the pushed up surface, the angle θ is defined as an angle between the axis of the rod and a tangent to a line segment connecting a center of curvature radius of the bent portion with a position at which the rod contacts the pushed up surface.