Backrest adjustment device for a vehicle seat or a vehicle bench seat

• US 8,845,029 B2
• Filed: 04/06/2012
• Issued: 09/30/2014
• Est. Priority Date: 04/09/2011
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Voelz, Reimer, Huber, Kirsten, Maier, Juergen
• Primary Examiner(s): Chen, Jose V
• Application Number:
  US13/441,530
• Publication Number:
  US 20120256461A1
• Time in Patent Office: 907 Days
• Field of Search: 297/362.11, 297/362, 297/361.1, 297/362.12, 297/367.12, 297/378.1, 297/378.12
• US Class Current: 297/362.11
• CPC Class Codes: B60N 2/0224 Non-manual adjustments, e.g. with electrical operation
• CPC Class Codes: B60N 2/22 the back-rest being adjustable B60N2/2878 takes precedence
• CPC Class Codes: B60N 2/2356 with internal pawls

Abstract

A backrest adjustment device is provided for a vehicle seat or a vehicle bench seat, in particular for a motor vehicle seat or a motor vehicle bench seat, in which a backrest part is connected to a seat part via an adjustment and fixing device, which has a fixing, which is disengaged for the inclination adjustment of the backrest part, the fixing of the adjustment and fixing device being disengaged by an electromechanical actuator.

Claims

1. A backrest adjustment device for a vehicle seat for a motor vehicle, comprising:

a seat part;

an adjustment and fixing device, comprising;

fixing means;

an adjustment lever coupled to the fixing means;

a Bowden cable system that is coupled to the adjustment lever and configured to actuate the adjustment lever; and

an electromechanical actuator that is operationally linked to the adjustment lever via the Bowden cable system; and

a backrest part connected to the seat part via the adjustment and fixing device, wherein an inclination of the backseat part is adjustable, wherein the Bowden cable system and the electromechanical actuator are disposed within the backrest part, and wherein the electromechanical actuator is configured to actuate disengagement of the fixing means during an inclination adjustment of the backrest part by actuating the adjustment lever via the Bowden cable.

2. The backrest adjustment device according to claim 1, wherein the fixing means is configured to be disengaged and fixed via the electromechanical actuator.

3. The backrest adjustment device according to claim 1, wherein the electromechanical actuator is configured to set an inclination of the backrest part.

4. The backrest adjustment device according to claim 3, wherein the electromechanical actuator includes a positioning motor.

5. The backrest adjustment device according to claim 1, wherein the adjustment and fixing device further comprises:

at least one joint fitting, comprising;

a fixed joint component assigned to the seat part; and

pivotable joint component assigned to the backrest part, wherein the fixed joint component and the pivotable joint component are connected via a pivot axis, wherein a specific position of the pivotable joint component with respect to the fixed joint component is able to be fixed or disengaged.

6. The backrest adjustment device according to claim 5, wherein the fixed joint component and the pivotable joint component are integrated parts of a frame for the backrest part.

7. The backrest adjustment device according to claim 5, wherein the fixed joint component and the pivotable joint component are integrated parts of a frame for the seat part.

8. The backrest adjustment device according to claim 1, wherein the adjustment and fixing device further comprises:

a backrest adjustment shaft that is configured to be disengaged by the fixing means.

9. The backrest adjustment device according to claim 8, wherein the adjustment and fixing device further comprises:

at least two joint fittings, comprising;

a fixed joint component assigned to the seat part; and

a pivotable joint component assigned to the backrest part,

wherein the fixed joint component and the pivotable joint component are connected via a pivot axis, wherein a specific position of the pivotable joint component with respect to the fixed joint component is able to be fixed or disengaged, and a torque of one joint fitting transmittable via the backrest adjustment shaft to another joint fitting.

10. The backrest adjustment device according to claim 1, wherein the adjustment and fixing device is actuated by an actuating part that activates the electromechanical actuator.

11. The backrest adjustment device according to claim 1, wherein the electromechanical actuator is arranged in an upper area of the backrest part.

12. The backrest adjustment device according to claim 1, wherein the electromechanical actuator is arranged between elements of a support structure for a headrest.

13. The backrest adjustment device according to claim 1, wherein the electromechanical actuator is actuated by an actuating part, which is connected via an electrical line to the electromechanical actuator.

14. The backrest adjustment device according to claim 13, wherein the actuating part is arranged on a central console.