A vehicle cushioning member having a shape of a substantially polygonal tube and arranged at a back surface of a trim member, the trim member being attached so as to cover a vehicle body panel, the vehicle cushioning member comprising:
- a top plate forming a top surface for receiving collision force;
- a plurality of side walls that are formed so as to extend from a perimeter edge portion of the top plate and that are arranged perimetrically with respect to the top plate;
- and
- a plate-shaped flange portion projecting outward from respective end portions of the plurality of side walls, the end portions being positioned on an opposite side of the top plate;
- wherein the vehicle cushioning member absorbs collision energy when the top plate receives collision force,
- wherein the side walls included in the plurality of side walls and adjacent to each other include central portions substantially perpendicular to each other in a section substantially parallel to the top plate,
- the plurality of side walls include:
- a first bending portion including a first convex-bending portion and a first concave-bending portion, the first convex-bending portion stimulating outward convex bending of the side wall when the top plate receives collision force, the first concave-bending portion stimulating inward concave bending of the side wall when the top plate receives collision force, the first convex-bending portion and the first concave-bending portion being formed perimetrically while switched from each other between the side walls adjacent to each other;
- and
- a second bending portion including a second convex-bending portion and a second concave-bending portion, the second convex-bending portion stimulating outward convex bending of the side wall when the top plate receives collision force, the second concave-bending portion stimulating inward concave bending of the side wall when the top plate receives collision force, the second convex-bending portion and the second concave-bending portion being formed perimetrically while switched from each other between the side walls adjacent to each other,
- the first convex-bending portion and the second concave-bending portion are formed at the same side wall, and the first concave-bending portion and the second convex-bending portion are formed at the same side wall,
- when a length from the top surface of the top plate to a surface belonging to the flange portion and positioned on a side of the top plate is 100%, a length from the top surface to the first bending portion is set to be equal to or larger than 24% and equal to or smaller than 47%, a length from the first bending portion to the second bending portion is set to be equal to or larger than 34% and equal to or smaller than 49%, and a length from the second bending portion to the surface belonging to the flange portion and positioned on the side of the top plate is set to be equal to or larger than 13% and equal to or smaller than 33%, concerning a height direction along an axis of the substantially polygonal tube.