US Patent 11260910 Suspension member

A suspension member includes a side rail. The side rail is formed in a closed sectional structure by combining an upper member, a lower member, and a reinforcing member located between the upper member and the lower member. The upper member and the reinforcing member are fixed by welding and form a closed cross section having an upper hollow portion. The reinforcing member and the lower member are fixed by welding and form a closed cross section having a lower hollow portion. A distance from an upper end to a lower end of the upper hollow portion in a vertical direction in the lower bending portion is longer than that in the upper bending portion, and a distance from an upper end to a lower end of the lower hollow portion in the vertical direction in the upper bending portion is longer than that in the lower bending portion.