Vehicle seat with a lumbar support

Patent metadata

Field	Value
Publication number	US-9637030-B2
Application number	US-201314398498-A
Country	US
Kind code	B2
Filing date	May 7, 2013
Priority date	May 7, 2012
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

Vehicle seat ( 1 ), with a seat part ( 2 ) and a backrest ( 3 ), which comprises a lumbar support ( 7 ), wherein the lumbar support ( 7 ) has a lumbar apex ( 7.1 ) towards the back of a seat occupant and tapers from there and that the lumbar support comprises a suspension 9, 11, 12 ) that results in load distribution with a primery load uptake ( 8. 1 ) at the lumbar apex ( 7.1 ).

First claim

The invention claimed is:

1. A vehicle seat comprising a seat part and a backrest,
wherein the backrest comprises a lumbar support,
wherein the lumbar support has a plate-like structure and is made from a plastic material,
wherein the lumbar support extends over an entire length of the backrest,
wherein the lumbar support has a lumbar apex towards a back of a seat occupant and tapers from there and that the lumbar support comprises a suspension that results in a distribution of a load uptake with a primary load uptake at the lumbar apex,
wherein the lumbar support has three spring regions comprising a first spring region, a second spring region, and a third spring region,
wherein the first spring region is provided in a region below the lumbar apex,
wherein the second spring region is arranged in a region of a shoulder of the seat occupant,
wherein the third spring region is a pair of opposing primary grounding elastic elements in an apex region of the vehicle seat,
wherein the pair of opposing primary grounding elastic elements are C-shaped and protrude outside a main plane of the plate-like structure, wherein corresponding ends of the opposing primary grounding elastic elements are oriented toward each other,
wherein the three spring regions deform elastically in an event of a rear impact,
wherein at least one of the three spring regions is cantilevered, and
wherein the lumbar apex is free of a spring region being cantilevered so that deflection is minimal at the lumbar apex.

2. The vehicle seat according to claim 1 , wherein the shape of the lumbar support tapers from both sides of the lumbar apex.

3. The vehicle seat according to claim 1 , wherein the load uptake tapers from the primary load uptake.

4. The vehicle seat according to claim 3 , wherein the load uptake tapers to both sides of the primary load uptake.

5. The vehicle seat according to claim 1 wherein, the lumbar support comprises a spring element.

6. The vehicle seat according to claim 5 , wherein the spring element is cantilevered.

7. The vehicle seat according to claim 5 , wherein the spring element is compressed by a seat occupant during a rear impact.

8. The vehicle seat according to claim 5 , wherein the spring element is integral with the lumbar support.

9. The vehicle seat according to claim 1 , wherein the backrest comprises a backpanel which prevents overload of the lumbar support.

10. The vehicle seat according to claim 1 , wherein the lumbar support is preloaded.

Assignees

• Johnson Controls Tech Co

Inventors

• Seibold Kurt
• Balin Alexander I
• Kienke Ingo
• Linnenbrink Jorg

Classifications

• B60N2/686

  Panel like structures · CPC title

• B60N2/1814

  Parallelogram-like structure · CPC title

• B60N2/22 Primary

  the back-rest being adjustable {(B60N2/2878 takes precedence)} · CPC title

• B60N2/1615

  Parallelogram-like structure · CPC title

• B60N2/68 Primary

  Seat frames · CPC title