Daimler Chrysler Ag

Mercedes-benz Aktiengesellschaft

Dynamit Nobel Kunststoff Gmbh

Andreas Otto

Karl-Heinz Baumann

Klaus Rathje

Anton Sautner

Dietmar Preissler

Horst Kleiner

Josef Oravetz

Christian Lemm

Juergen Kipar

Carola Fischer

A bolt-on part, especially a front or rear bumper, of a motor vehicle, that can be exposed especially in its outer wall to impact energy and is mounted pointwise on a structural member of a motor vehicle, with the connection between the structural member and the bolt-on part consisting of pin-shaped fastening devices on one of the two parts to be connected and recesses in the other of the two parts, is intended to dissipate as much deformation energy as possible by coming loose from the structural member under the influence of an impact in the lengthwise direction of the bolt-on part. For this purpose, at least one of the recesses in each case is closed circumferentially and is located at the end furthest away in the direction of action from the point where the impact energy is applied. The other recesses are open circumferentially and are in the form of grooves inclined at less than .alpha.=90.degree. to the acting direction of the impact energy in such fashion that the bolt-on part that deforms under the impact energy can come loose from the structural member without deformation of the structural member, at the recesses that are formed as grooves.

Bolt-on part, especially a bumper of a motor vehicle

The invention relates to a bumper for a vehicle body having two side members (11, 12), said bumper consisting of a bumper bracket (13) extending over the width of the body, with two deformation members (14, 15) projecting at right angles from the back at a distance from one another, said members being integral with bumper bracket (13) and being connectable by bolt connections (20) with side members (11, 12). The deformation members (14, 15) are more resistant to deformation than bumper bracket (13), so that they deform to absorb additional energy only when the ability of bumper bracket (13) to deform is exhausted.

Bumper

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Heimsheim, Germany

Andreas Otto