Patent ID: 9033407
Filing Date: 2015-05-19
Classification: B60R,B62D

Abstract:
1. A vehicle hood structure comprising: a hood outer panel configuring that is an outer sheet of the hood structure; and a hood inner panel configuring that is an inner sheet of the hood structure, the hood inner panel disposed to a hood bottom side with respect to the hood outer panel and joined to the hood outer panel, wherein the hood inner panel is formed by cold-forming a sheet of 6000 series aluminum alloy, as defined by JIS, to include a wavy section having a waveform profile provided with protrusion portions that have a profile protruding towards a hood outer panel side alternating with concave portions that have a concave profile with respect to the hood outer panel side, a height of the waveform profile being set to a forming limit value of the cold-forming, wherein in a cross-section of the waveform profile, a width dimension between top portions of the protrusion portions formed respectively adjacent on two sides of a given protrusion portion out of the plurality of the protrusion portions other than opposing end protrusion portions is set to be smaller than an external diameter (165 mm) of a head impactor modeled on a pedestrian head, wherein the waveform profile of the wavy section has a wavelength p set such that 70 mm≦p≦82.5 mm.