Load path-optimized hybrid support structure

Patent metadata

Field	Value
Publication number	US-2020009999-A1
Application number	US-201716335037-A
Country	US
Kind code	A1
Filing date	Aug 3, 2017
Priority date	Sep 20, 2016
Publication date	Jan 9, 2020
Grant date	—

Abstract

A hybrid support structure for a backrest part of a vehicle seat or a back bench seat, which is formed from a metal structure and a plastic structure, the metal structure including at least one connecting profile disposed between two side rail profiles of the hybrid support structure. It is provided that the connecting profile, together with a central rib of a web structure designed as a plastic structure follows a load path-optimized main load line, which runs between two connecting points of the connecting profile on the side rail profiles, taking into account a force acting upon the hybrid support structure in at least one assumed load case.

First claim

What is claimed is:

1 . A hybrid support structure for a backrest part of a vehicle seat or a back bench seat, which is formed from a metal structure and a plastic structure, the metal structure including at least one connecting profile disposed between two side rail profiles of the hybrid support structure, characterized in that wherein
the connecting profile, together with a central rib of a web structure designed as a plastic structure, follows a load path-optimized main load line, which runs between two connecting points of the connecting profile on the side rail profiles, taking into account a force acting upon the hybrid support structure n at least one assumed load case.

2 . The hybrid support structure according to claim 1 , wherein the metal structure and the plastic structure are preferably connected to form the hybrid support structure in an injection molding process.

3 . The hybrid support structure according to claim 2 , wherein the metal structure is a component assembly made up of multiple metallic components, the multiple components being first assembled into the metallic component assembly and then connected to each other in the injection molding process via the plastic structure designed as a single part.

4 . The hybrid support structure according to claim 1 , wherein the web structure of the plastic structure is an irregular spiderweb structure, which encompasses the central rib as well as essentially horizontal ribs extending from the central rib and essentially vertical ribs which are connected to each other via crossing points.

5 . The hybrid support structure according to claim 4 , wherein a spanned plane of the spiderweb structure between the lateral side rail profiles of the hybrid support structure and between the headrest receptacles belonging to the plastic structure on an upper end of the hybrid support structure extend up to a horizontal rotation axis on a lower end of the hybrid support structure.

6 . The hybrid support structure according to claim 4 , wherein the spiderweb structure of the plastic structure includes a first and a second spiderweb substructure, which are formed continuously on a back side of the hybrid support structure and in an interrupted manner on a front side of the hybrid support structure.

7 . The hybrid support structure according to claim 6 , wherein a spanned plane of the first spiderweb substructure between the lateral side rail profiles of the hybrid support structure and between the headrest receptacles belonging to the plastic structure on an upper end of the hybrid support structure extend up to a horizontal rotation axis, which runs between the upper and lower ends of the hybrid support structure.

8 . The hybrid support structure according to claim 6 , wherein a spanned plane of the second spiderweb substructure extends between the lateral side rail profiles of the hybrid support structure and between the horizontal axis between the upper and lower ends of the hybrid support structure and a horizontal rotation axis on the lower end of the hybrid support structure.

9 . The hybrid support structure according to claim 6 , wherein, within the plane spanned by second spiderweb substructure, a metallic insert is disposed between the lateral side rail profiles and divides the second spiderweb substructure into a front-side and a back-side spiderweb substructure.

10 . The hybrid support structure according to claim 1 , wherein the connecting profile disposed between the side rail profiles is designed as a C profile, which has two opposite profile legs, which extend to the back side of the hybrid support structure, between which another web structure is formed as a cross web structure, which is formed from crossing ribs, which essentially form triangular honeycombs or rectangular honeycombs, in particular square or rhombic honeycombs having crossing points.

11 . The hybrid support structure according to claim 1 , wherein the side rail profiles are designed as C profiles, which have two opposite profile legs, which project laterally from the hybrid support structure, another web structure being formed between the profile legs as a cross web structure, which is formed from regularly crossing ribs, which essentially form triangular honeycombs or rectangular honeycombs, in particular square or rhombic honeycombs having crossing points.

12 . The hybrid support structure according to claim 1 , wherein the plastic structure comprises a cushion structure receiving element, which has another web structure on the side of the cushion structure receiving element, in particular as a triangular web structure, which is formed from angled ribs, which essentially form triangular honeycombs having crossing points.

13 . The hybrid support structure according to claim 1 , wherein the metal structure includes a metallic profile wire as a function element, which has a projection, so that a cushion structure may be fastened to the cushion structure receiving element made from plastic and the projection of the metallic profile wire.

14 . The hybrid support structure according to claim 1 , wherein metallic receiving sleeves are disposed in the side rail profiles of the hybrid support structure, which are fixedly connected to the one-part plastic structure, the plastic structure having extrusion coatings of the receiving sleeves, each of which is provided laterally with another web structure as a circular segment web structure, which is formed from ribs extending regularly or irregularly in a ray-shaped manner from the horizontal rotational axis of the receiving sleeves, whereby the circular segment web structure forms circular segment-shaped honeycombs.

15 . The hybrid support structure according to claim 1 , wherein the metal structure comprises a metallic top profile, which is provided with an extrusion coating made from plastic as part of the plastic structure,

16 . The hybrid support structure according to claim 1 , wherein the plastic structure comprises a base plate and/or a headrest receptacle, which is/are formed as part(s) of the plastic structure.

Assignees

• Volkswagen Ag
• Sitech Sitztechnik Gmbh

Inventors

• Dreessen Philipp
• Gerdes Arne
• Huinink Stefan
• Gadek Slawomir

Classifications

• B60N2/36

  into a loading platform {(B60N2/065 takes precedence)} · CPC title

• B60N2/686 Primary

  Panel like structures · CPC title

• B60N2002/684

  the back rest being mounted or joined with an easy attachment system to the seat · CPC title

• B60N2205/35

  Seat, bench or back-rests being split laterally in two or more parts · CPC title

• B60N2/682

  Joining means · CPC title