Device for influencing a backward movement of a seat and seat

Patent metadata

Field	Value
Publication number	US-11535138-B2
Application number	US-201616076142-A
Country	US
Kind code	B2
Filing date	Sep 14, 2016
Priority date	Feb 8, 2016
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

The invention relates to a device for influencing a backward movement of a seat (1), in particular a backrest part (1.1) of the seat (1), with at least one deformation element (4) arranged in a hinged area (7) of the seating part (1.2) of the seat (1), the deformation element (4) being configured such that the deformation element can be deformed due to a force acting on the seating part (1.2) and/or the back part (1.1) at a predefined torque curve. The invention also relates to a seat (1), in particular a vehicle seat, comprising a seating part (1.2), a backrest part (1.1) and the type of device.

First claim

The invention claimed is:

1. A device for influencing a backward movement of a backrest part of a seat, the device comprising:
at least one deformation element arranged in a hinged area of a seating part of the seat, wherein the at least one deformation element is configured such that the at least one deformation element is deformable due to a force acting on the seating part or the backrest part or the seating part and the backrest part at a predefined torque curve;
wherein the at least one deformation element is configured as a double ring,
wherein the double ring comprises an internal ring, an external ring and deformable webs, and
wherein the internal ring and the external ring are connected to each other by the deformable webs,
wherein the internal ring is fastened to a transverse strut and the external ring is fastened to a first side part,
wherein said internal ring, said external ring and said deformable webs have coplanar outer surfaces and coplanar inner surfaces,
wherein said internal ring, said external ring and said deformation webs have respective different material expansion behaviors and/or respective different material strengths,
wherein said internal ring has a constant-diameter, inner circumferential surface and said outer ring has a constant-diameter, outer circumferential surface, wherein said inner circumferential surface and said outer circumferential surface are concentric and entirely radially aligned with each other and have a same width.

2. The device as claimed in claim 1 , wherein the seating part comprises the first side part and a second side part and pivoting arms, between the pivoting arms is the transverse strut connecting the pivoting arms, at least on one side between one of the pivoting arms and one end of the transverse strut, the at least one deformation element is arranged in the hinged area of the seat.

3. The device as claimed in claim 1 , wherein the at least one deformation element is formed from at least two parts.

4. The device as claimed in claim 3 , wherein one of the parts is harder than the other part.

5. The device as claimed in claim 3 , wherein one part forms a base part and the other part forms a support part, and the support part is connected to the base part such that the support part is deformable or adjustable in a resilient manner relative to the base part.

6. The device as claimed in claim 3 , wherein when a predetermined threshold value of the force acting on the seating part or the backrest part is exceeded, an operative connection is produced between the at least two parts.

7. The device as claimed in claim 6 , wherein the at least two parts have in each case a rim profile for producing the operative connection in a contact region.

8. The device as claimed in claim 3 , wherein at least one of the parts is configured as a ring.

9. The device as claimed in claim 1 , wherein the at least one deformation element is formed from one part with a plurality of partial regions.

10. The device as claimed in claim 1 , wherein the internal ring, the external ring and the deformable webs are all axially aligned with one another.

11. The device as claimed in claim 1 , wherein said coplanar outer surfaces of the internal ring, the external ring and the deformable webs are adjacent the side part on a first side of the deformation element and said coplanar inner surfaces of the internal ring, the external ring and the deformable webs are on a second side of the deformation element.

12. The device according to claim 1 , wherein in an initial state before deformation the deformation webs have a curved, not-straight extension course (in radial direction) and in a state after a deformation the deformation webs have a straight and stretched extension course.

13. A seat in particular a vehicle seat, comprising:
a seating part;
a backrest part; and
a device comprising:
at least one deformation element arranged in a hinged area of a seating part of the seat,
wherein the at least one deformation element is configured such that the at least one deformation element is deformable due to a force acting on the seating part or the backrest part or the seating part and the backrest part at a predefined torque curve,
wherein the at least one deformation element is configured as a double ring,
wherein the double ring comprises an internal ring, an external ring and deformable webs, and
wherein the internal ring and the external ring are connected to each other by the deformable webs,
wherein the internal ring is fastened to a transverse strut and the external ring is fastened to a side part,
wherein said internal ring, said external ring and said deformable webs have coplanar outer surfaces and coplanar inner surfaces;
wherein said deformation webs have different material expansion behaviors and/or different material strengths relative to said internal and external rings,
wherein said internal ring has a constant-diameter, inner circumferential surface and said outer ring has a constant-diameter, outer circumferential surface, wherein said inner circumferential surface and said outer circumferential surface are concentric and entirely radially aligned with each other and have a same width.

14. A device for influencing a backward movement of a backrest part of a seat, the device comprising:
at least one deformation element arranged in a hinged area of a seating part of the seat, wherein the at least one deformation element is configured such that the at least one deformation element is deformable due to a force acting on the seating part or the backrest part or the seating part and the backrest part at a predefined torque curve;
wherein the at least one deformation element is configured as a double ring,
wherein the double ring comprises an internal ring, an external ring and deformable webs, and
wherein the internal ring and the external ring are connected to each other by the deformable webs, wherein said internal ring, said external ring and said deformable webs have coplanar outer surfaces and coplanar inner surfaces,
wherein the internal ring is fastened to a transverse strut and the external ring is fastened to a first side part,
wherein said internal ring and said external ring are formed of a first material and said deformable webs are formed of a second material, wherein said second material is different than the first material;
wherein said deformation webs have different material expansion behaviors and/or different material strengths relative to said internal and external rings,
wherein said internal ring has a constant-diameter, inner circumferential surface and said outer ring has a constant-diameter, outer circumferential surface, wherein said inner circumferential surface and said outer circumferential surface are concentric and entirely radially aligned and have a same width.

15. The device of claim 14 , wherein said second material is more flexible than the first material.

Assignees

• Adient Luxembourg Holding S Ar L
• Adient Us Llc

Inventors

• Demirci Oezkan
• Eckenroth Dirk
• SCHüLER ROLF

Classifications

• B60N2/42709

  involving residual deformation or fracture of the structure · CPC title

• B60N2/3011

  the back-rest being hinged on the cushion, e.g. "portefeuille movement" · CPC title

• B60N2/1635

  characterised by the drive mechanism · CPC title

• B60N2/42745 Primary

  of the back-rest (B60N2/433 takes precedence; higher part of the back-rest moving together with the headrest B60N2/888) · CPC title

• B60N2/938 Primary

  and provided with braking systems · CPC title