When a collision load by broadside collision is applied to a door impact bar 18 through an outer panel 22 of a door 10, the collision load applied to the door impact bar 18 is applied to an inner panel 20 through a distal part 30, a leg part 32 and a base 28 of a bracket 24. In this case, the leg part 32 of the bracket 24 receives the collision load and when the collision load exceeds a predetermined value, deformation of the leg part 32 is induced in places of deformation induction parts 34 and a pair of distal part leg pieces 3202B is deformed at the deformation induction parts 34 as boundaries.
