Vehicle seat

Patent metadata

Field	Value
Publication number	US-11279264-B2
Application number	US-202017082386-A
Country	US
Kind code	B2
Filing date	Oct 28, 2020
Priority date	Nov 22, 2019
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

Vehicle seat having a backrest part and a backrest base part, a seat part and a seat base part, wherein the seat part is displaceable with respect to the seat base part and wherein the backrest part is rotatably connected to the backrest base part, the backrest base part and the seat base part being connected to one another by means of a lever assembly, wherein the lever assembly has a first lever element which is rotatably connected to the backrest and the seat base part, and a second lever element, which comprises a first lever element part and a second lever element part, wherein the first lever element part is rotatably connected to the backrest base part and the second lever element part, and the second lever element part is rotatably connected to the first lever element part and an adjustment device, wherein the adjustment device is rotatably connected to the seat base part.

First claim

What is claimed is:

1. A vehicle seat having a backrest part and a backrest base part, a seat part and a seat base part, wherein the seat part is displaceable with respect to the seat base part, wherein the backrest part is rotatably connected to the backrest base part, wherein the backrest base part and the seat base part are connected to one another by a lever assembly, wherein the lever assembly comprises a first lever element, which is rotatably connected to the backrest base part and the seat base part, and a second lever element, which comprises a first lever element part and a second lever element part, wherein the first lever element part is rotatably connected to the backrest base part and the second lever element part, wherein the second lever element part is rotatably connected to the first lever element part and an adjustment device, and wherein the adjustment device is rotatably connected to the seat base part.

2. The vehicle seat according to claim 1 , wherein the first lever element is rotatably connected to the backrest base part about a first axis of rotation and rotatably connected to the seat base part about a second axis of rotation, wherein the first lever element part is rotatably connected to the backrest base part about a third axis of rotation and rotatably connected to the second lever element part about a fourth axis of rotation, wherein the second lever element part is rotatably connected to the adjustment device about a fifth axis of rotation, and wherein the adjustment device is rotatably connected to the seat base part about a sixth axis of rotation.

3. The vehicle seat according to claim 2 , wherein the sixth axis of rotation is fixedly arranged with respect to the seat base part, wherein the second axis of rotation is fixedly arranged with respect to the seat base part, wherein the first axis of rotation is fixedly arranged with respect to the backrest base part, and wherein the third axis of rotation is fixedly arranged with respect to the backrest base part.

4. The vehicle seat according to claim 2 , wherein a first connecting line between the first axis of rotation to the second axis of rotation, a second connecting line between the third axis of rotation to the fourth axis of rotation and a third connecting line between the fourth axis of rotation and the sixth axis of rotation are formed.

5. The vehicle seat according to claim 1 , wherein the seat part is rotatably connected to the backrest base part, wherein a third lever element part is rotatably connected to the seat part and the seat base part.

6. The vehicle seat according to claim 2 , wherein a first distance between the first axis of rotation and the second axis of rotation corresponds to a second distance between the third axis of rotation and the fourth axis of rotation.

7. The vehicle seat according to claim 4 , wherein a first position, a second position, and a third position of the second lever element part can be adjusted by the adjustment device, wherein in the first position the first connecting line is parallel to the second connecting line, wherein in the second position the first connecting line and the second connecting line enclose a first angle, and wherein in the third position the first connecting line and the second connecting line enclose a second angle.

8. The vehicle seat according to claim 4 , wherein the second connecting line and the third connecting line enclose a third angle in the first position, a fourth angle in the second position and a fifth angle in the third position.

9. The vehicle seat according to claim 6 , wherein a third distance between the third axis of rotation and the fifth axis of rotation can be changed by the adjustment device so that a position of a fictitious axis of rotation can be changed.

10. The vehicle seat according to claim 1 , wherein the backrest base part can be adjusted with respect to the seat base part by the lever assembly, and wherein a seat part inclination of the seat part and a longitudinal position relative to the seat base part can be adjusted.

Assignees

• Grammer Ag

Inventors

• Haller Erwin

Classifications

• B60N2/39

  Seats tiltable to compensate for roll inclination of vehicles · CPC title

• B60N2/0284

  Adjustable seat-cushion length (B60N2/0224 takes precedence) · CPC title

• B60N2/38 Primary

  specially constructed for use on tractors or like off-road vehicles · CPC title

• A47C1/032

  the parts being movably-coupled seat and back-rest (A47C1/035 takes precedence) · CPC title

• B60N2/507

  Parallelogram-like structure · CPC title