Patent ID: 8882150

Claim:
A bump stopper attached to a main frame of a chassis frame of a vehicle extending in a vehicle length direction, contacting an arm of a front wheel suspension device of the vehicle, and restricting upward movement of the arm, the bump stopper comprising: a stopper body attached to an outer surface of the main frame in a vehicle width direction so as to protrude toward an outer side in the vehicle width direction, wherein the stopper body is a panel which is, as viewed in a cross section along a horizontal direction, formed in a bag shape having an opening on an inner side in the vehicle width direction and formed so as to have openings at upper and lower ends, and the stopper body is attached to the outer surface of the main frame in the vehicle width direction at front and rear attachment parts which are end parts of the panel positioned at sides of the opening on the inner side in the vehicle width direction such that the end parts are apart from each other in the vehicle length direction, a contact member contacting the arm is attached to the stopper body so as to be positioned in a vicinity of a lower opening which is the opening at the lower end of the panel, and at a position of the main frame overlapping, in the vehicle length direction, with an upper opening which is the opening at the upper end of the panel, a weak part configured to facilitate deformation of the main frame in the vehicle length direction upon a frontal collision of the vehicle is provided.