VEHICLE SEAT WITH A DEFORMABLE BACKREST

• US 20070080570A1
• Filed: 04/10/2006
• Published: 04/12/2007
• Est. Priority Date: 04/15/2005
• Status: Active Grant

• Current Assignee: Grammer AG (Ningbo Jifeng Auto Parts Co.,Ltd.)
• Original Assignee: Grammer AG (Ningbo Jifeng Auto Parts Co.,Ltd.)
• Inventors: Erker, Christian, Kohl, Josef
• Granted Patent: US 7,874,618 B2
• Time in Patent Office: Days
• US Class Current: 297/284.400
• CPC Class Codes: B60N 2/2209 by longitudinal displacement of the cushion, e.g. back-rest hinged on the bottom to the cushion and linked on the top to the vehicle frame
• CPC Class Codes: B60N 2/643 shape of the back-rests B60N2/66 takes precedence
• CPC Class Codes: B60N 2/66 Lumbar supports

Abstract

The invention relates to a vehicle seat with a backrest (1) and a seat part (2a), wherein the seat part (2a) can be displaced in the forward and backward direction (4) with respect to a base frame (3, 11) and the backrest (1) has a lumbar spine region (14) which can be deformed in the forward and backward direction (13), wherein a rocker-like element (8) is provided which is arranged in the lumbar spine region (14) such that it can pivot about a horizontally running pivot axle (9), said rocker-like element extending at least partially along the longitudinal direction of the backrest, wherein the pivot axle (9) can be displaced together with the seat part (2a) in the forward and backward direction (4) and a pivotable section (8b) of the rocker-like element (8) is attached to the base frame (3, 11) in a backrest region of the base frame (3, 11).

Claims

1. Vehicle seat with a backrest (1) and a seat part (2a), wherein the seat part (2a) can be displaced in the forward and backward direction (4) with respect to a base frame (3, 11) and the backrest (1) has a lumbar spine region (14) which can be deformed in the forward and backward direction (13), characterized by a rocker-like element (8) which is arranged in the lumbar spine region (14) such that it can pivot about a horizontally running pivot axle (9), said rocker-like element extending at least partially along the longitudinal direction of the backrest, wherein the pivot axle (9) can be displaced together with the seat part (2a) in the forward and backward direction (4) and a pivotable section (8b) of the rocker-like element (8) is attached to the base frame (3, 11) in a backrest region of the base frame (11).

2. Vehicle seat according to claim 1, characterized in that the base frame (11) in the backrest region can be pivoted in the forward and backward direction (4) about an axle (12) which extends horizontally.

3. Vehicle seat according to claim 1 or 2, characterized in that the seat part (2a) in the region (6) towards the front of the vehicle has on its underside a sliding bearing region (7a) which is angled with respect to the surface of the seat part, said sliding bearing region being provided to bring about height adjustment of the seat part (2a) in the region (6) towards the front of the vehicle during a displacement of the seat part (2a) in the forward direction (4).

4. Vehicle seat according to any of the preceding claims, characterized in that the rocker-like element (8) is covered on its front side by a backrest pad (2b) which assumes a lordosis-type or kyphosis-type shape by pivoting an upper end (8a) of the rocker-like element (8).

5. Vehicle seat according to any of the preceding claims, characterized in that the rocker-like element (8) is designed as a U-shaped rod.

6. Vehicle seat according to any of claims 1 to 4, characterized in that the rocker-like element (8) is designed as a plate-like element.

7. Vehicle seat according to any of the preceding claims, characterized in that the rocker-like element (8) is connected at its upper end (8a) to essentially S-shaped rods which extend along the backrest (1).

8. Vehicle seat according to claim 7, characterized in that the upper end (8a) of the rocker-like element (8) can be displaced along the rods during a pivoting movement of the rocker-like element (8).

9. Vehicle seat according to claim 8, characterized in that, by displacing the upper end (8a) of the rocker-like element (8), the rods can be rotated about a respective axle extending in the longitudinal direction of the backrest (1).

10. Vehicle seat according to any of the preceding claims, characterized in that the pivotable section (8a) of the rocker-like element (8) is attached to the backrest region of the base frame (11) by means of a fixable spacer (10).