Cable actuator for retractable headrest

• US 6,557,933 B1
• Filed: 05/15/2002
• Issued: 05/06/2003
• Est. Priority Date: 05/15/2002
• Status: Expired due to Term

• Current Assignee: FCA US LLC (Stellantis NV)
• Original Assignee: Daimler Chrysler Corporation (Mercedes-Benz Group AG)
• Inventors: Schambre, John E, DeLellis, Louis D, Neag, Liliana, Washington, Marcus G, Soullier, Jack
• Primary Examiner(s): Brown, Peter R.
• Application Number:
  US10/146,090
• Time in Patent Office: 356 Days
• Field of Search: 297/61, 297/391, 297/410, 297/378.12
• US Class Current: 297/61
• CPC Class Codes: B60N 2/20 the back-rest being tiltable, e.g. to permit easy access B60N2/04, B60N2/22 , B60N2/3002 take precedence
• CPC Class Codes: B60N 2/3013 the back-rest being hinged on the vehicle frame
• CPC Class Codes: B60N 2/36 into a loading platform B60N2/065 takes precedence
• CPC Class Codes: B60N 2/829 characterised by their adjusting mechanisms, e.g. electric motors
• CPC Class Codes: B60N 2/835 specially adapted for rear seats

Abstract

A motor vehicle seat frame assembly has a headrest movable between an extended position and a retracted position. The frame assembly comprises a seatback frame operatively engaged with the headrest, a cable, and a rod having an extension. The seatback frame is pivotable from a use position to a lowered position, while the cable extends between the headrest and a fixed point. A tensioner is attached to the seatback frame, and is adapted to wind the cable on the extension when the seatback frame is pivoted toward the lowered position.

Claims

1. A seat frame assembly mounted in a motor vehicle and having a headrest movable between an extended position and a retracted position, the frame assembly comprising:

a seatback frame operatively engaged with the headrest, the seatback frame being pivotable from a use position to a lowered position;

a cable having a first end attached to the headrest and a second end attached to a fixed point in the motor vehicle;

a rod fixed relative to the cable and having a portion transverse to the cable; and

a tensioner attached to the seatback frame and positioned on an opposite side of the cable from the portion, the tensioner being adapted to deflect the cable around the portion when the seatback frame is pivoted toward the lowered position.

2. The frame assembly of claim 1 further comprising a headrest guide assembly connected to the seatback frame.

3. The frame assembly of claim 1 further comprising a spring bearing against the headrest.

4. The frame assembly of claim 3 wherein the spring biases the headrest away from the seatback frame.

5. The frame assembly of claim 1 wherein the fixed point is a vehicle load floor.

6. The frame assembly of claim 1 wherein the seatback frame is pivotable about a pivot that is fixed with respect to the vehicle.

7. A seat frame assembly mounted in a motor vehicle and having a headrest movable between an extended position and a retracted position as the frame assembly pivots, the frame assembly comprising:

a seatback frame operatively engaged with the headrest, the seatback frame being pivotable from a use position to a lowered position;

a cable having a first end attached to the headrest and a second end attached to a fixed point in the motor vehicle;

a rod fixed relative to the cable and having a portion transverse to the cable; and

a tensioner attached to the seatback frame and positioned on an opposite side of the cable from the portion, the tensioner being adapted to deflect the cable around the portion when the seatback frame is pivoted toward the lowered position.

8. The frame assembly of claim 7 further comprising a headrest guide assembly connected to the seatback frame.

9. The frame assembly of claim 7 further comprising a spring bearing against the headrest.

10. The frame assembly of claim 9 wherein the spring biases the headrest away from the seatback frame.

11. The frame assembly of claim 7 wherein the fixed point is a vehicle load floor.

12. The frame assembly of claim 7 wherein the seatback frame is pivotable about a pivot that is fixed with respect to the vehicle.