Underframe for motor vehicle
AssigneeRENAULT s.a.s.
InventorsAlain Bellanger, Thibaud Hacquard
Life of this patent
Estimating the term…
Abstract
An underframe for an automobile including two side rails, a transverse crossbar, a first floor member attached on the side rails and, on either side, a lateral reinforcing member, and a second floor member. Each of the rails includes an extension in a form of a portion under the crossbar, attached to the lower face of the central crossbar and connected to an attachment portion including a front portion that extends gradually towards the respective lateral reinforcement member and that is attached on a longitudinal portion of the respective lateral reinforcement member.
Claims9
1-4. (canceled)
A motor vehicle underframe comprising:
- two side members that are oriented approximately in a longitudinal direction of the vehicle, are spaced apart from each other, and each having a first end;
- a central crossmember that is fixed to each of the first ends of the side members, in a transverse direction of the vehicle, and that includes a lower face turned toward the underside of the vehicle, and an upper face facing an opposite way to the lower face;
- a first floor element fixed to the side members and to the lower face of the central crossmember;
- on each side, a lateral reinforcing element that is fixed to the end of the central crossmember and that extends longitudinally and in a plane approximately perpendicular to the first floor element;
- and
- a second floor element fixed to the upper face of the central crossmember,
- wherein the first end of each of the side members is continued by a sub-crossmember portion fixed to the lower face of the central crossmember,
- wherein the sub-crossmember portion is attached to a fixing portion comprising a forward portion welded to that lateral face of the central crossmember that is toward the second floor element and an upper portion fixed to the underside of the second floor element,
- wherein the fixing portion converges gradually on its respective lateral reinforcing element, and
- wherein the fixing portion is fixed to a longitudinal portion of the respective reinforcing lateral element, such that forces acting on each side member are transmitted to the lateral reinforcing elements.
Dependencies are inferred from the claim text.