Motor vehicle body having a bodyshell and vehicle underbody, and having a securing structure component

Patent metadata

Field	Value
Publication number	US-10889335-B2
Application number	US-201916384415-A
Country	US
Kind code	B2
Filing date	Apr 15, 2019
Priority date	Apr 17, 2018
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

A motor vehicle body encompasses a surface-coated bodyshell having an underbody carrying portion and a underbody that is embodied separately from the bodyshell and is fixedly joined to the underbody carrying portion, the underbody having a planar, multiply curved underbody structure component encompassing fiber-reinforced plastic, as well as at least one underbody member, joined to the underbody structure component, having a member material different from the structural material of the underbody structure component; a support projection, on which the underbody member is braced and to which the underbody member is fixedly joined by adhesive bonding, protruding toward the vehicle interior from the underbody carrying portion; the vehicle body encompasses at least one securing structure component that is embodied separately both from the bodyshell and from the underbody and encompasses at least two limbs arranged at an angle to one another, which component is joined to the bodyshell and/or to the underbody member to secure the underbody on the bodyshell.

First claim

The invention claimed is:

1. A motor vehicle body encompassing a surface-coated bodyshell having an underbody carrying portion and encompassing a vehicle underbody that is embodied separately from the bodyshell and is fixedly joined to the underbody carrying portion, the vehicle underbody comprising a planar, multiply curved underbody structure component encompassing fiber-reinforced plastic, as well as at least one underbody member, joined to the underbody structure component, having a member material different from the structural material of the underbody structure component; a support projection, on which the at least one underbody member is braced and to which the at least one underbody member is fixedly joined by adhesive bonding, protruding toward the vehicle interior from the underbody carrying portion, the motor vehicle body encompasses at least one securing structure component that is embodied separately both from the bodyshell and from the vehicle underbody and encompasses at least two limbs arranged at an angle to one another, the at least one securing structure component being joined to at least one of the bodyshell and the at least one underbody member in order to secure the vehicle underbody on the bodyshell.

2. The motor vehicle body according to claim 1 , wherein the at least two limbs of the at least one securing structure component includes a joining limb and a carrying limb, the joining limb being adhesively bonded to the underbody carrying portion; the carrying limb forms the support projection of the underbody carrying portion.

3. The motor vehicle body according to claim 2 , wherein the carrying limb passes through an opening in the underbody carrying portion.

4. The motor vehicle body according to claim 3 , wherein the carrying limb passes through an opening in at least one of a beam and a vertical pillar in the underbody carrying portion.

5. The motor vehicle body according to claim 2 , wherein the at least one underbody member encompasses a hollow profile, the carrying limb protruding into the hollow profile and overlapping a portion of the hollow profile in a protrusion direction, and being joined to the at least one underbody member in an overlap region thereby formed.

6. The motor vehicle body according to claim 5 , wherein the hollow profile is at least one of U-profile and a profile having a closed cross section.

7. The motor vehicle body according to claim 5 , wherein the carrying limb protruding into the hollow profile is joined to the at least one underbody member by at least one of adhesive bonding, bolting and clipping in the overlap region thereby formed.

8. The motor vehicle body according to claim 1 , wherein the at least one securing structure component is adhesively bonded to the bodyshell overlappingly with a securing portion of the vehicle underbody on a side of the vehicle underbody which faces away from the support projection.

9. The motor vehicle body according to claim 8 , wherein the at least two limbs of the at least one securing structure component includes a fastening limb and a holding limb, the fastening limb being adhesively bonded to the underbody carrying portion; the holding limb overlaps the securing portion of the vehicle underbody.

10. The motor vehicle body according to claim 9 , wherein the fastening limb is adhesively bonded to a vertical pillar.

11. The motor vehicle body according to claim 9 , wherein the at least one securing structure component comprises three limbs, of which each two directly adjacent limbs enclose an angle with one another, the holding limb being joined at each of its two longitudinal ends to a respective fastening limb, each of which is adhesively bonded to the underbody carrying portion.

12. The motor vehicle body according to claim 11 , wherein the three limbs are each adhesively bonded to a vertical pillar of the underbody carrying portion.

13. The motor vehicle body according to claim 9 , wherein the at least one securing structure component is joined to a vertical pillar having an open cross section, the holding limb together with the vertical pillar forming a closed peripheral cross section in a region where the at least one securing structure component is arranged.

14. The motor vehicle body according to claim 1 , wherein the at least one securing structure component is adhesively bonded to the at least one underbody member overlappingly with a doubling portion of the at least one underbody member.

15. The motor vehicle body according to claim 1 , wherein the at least one underbody member is a crossmember or a longitudinal member.

16. The motor vehicle body according to claim 15 , wherein at least one of the at least one underbody member is made of metal and the underbody structure component encompasses or is an LWRT ply.

17. The motor vehicle body according to claim 15 , wherein at least one of the at least one underbody member is made of sheet metal and the underbody structure component encompasses or is a metal ply having an LWRT ply arranged between two metal plies.

18. The motor vehicle body according to claim 1 , wherein at least one of the support projection and the at least one securing structure component comprises an insertion component which comprises a mounting configuration for mounting a mounting component.

19. The motor vehicle body according to claim 18 , wherein the insertion component is made up of a plastic insert, the mounting component including at least one of a bolt, a clip and a rivet.

Assignees

• Roechling Automotive Se & Co Kg

Inventors

• Fischer Jochem

Classifications

• B62D25/2036 Primary

  the subunits being side panels, sills or pillars (B62D21/157 takes precedence) · CPC title

• B62D27/026 Primary

  Connections by glue bonding (in general F16B11/00; processes C09J5/00) · CPC title

• B62D27/065

  using screwthread (connection of crossbeam to A- pillars B62D25/147; mounting load bearing surfaces B62D21/09; securing mudguards B62D25/163; connections for synthetic parts B62D29/048) · CPC title

• B62D25/04

  Door pillars {; windshield pillars} · CPC title

• B62D25/2009

  in connection with other superstructure subunits · CPC title