HEAD RESTRAINT FOR A VEHICLE SEAT

• US 20130187427A1
• Filed: 01/11/2013
• Published: 07/25/2013
• Est. Priority Date: 01/12/2012
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Eisenbraun, Jonas
• Granted Patent: US 8,919,877 B2
• Time in Patent Office: Days
• US Class Current: 297/391
• CPC Class Codes: B60N 2/80 Head-rests
• CPC Class Codes: B60N 2/888 with arrangements for protecting against abnormal g-forces, e.g. by displacement of the head-rest

Abstract

A head restraint for a vehicle seat is provided. The head restraint includes a basic body and a foam body surrounding the basic body. The foam body at a front has a contact surface for a head of a person using the vehicle seat, and a front surface of the basic body facing the contact surface has a vertically running concave curvature. The basic body in a region of an upper end of the contact surface comprises a ramp, which, with respect to a portion of the front surface of the basic body arranged below this upper end, is directed towards the front.

Claims

1. A head restraint for a vehicle seat, the head restraint comprising:

a basic body, and

a foam body surrounding the basic body, wherein the foam body at a front comprises a contact surface for a head of a person using the vehicle seat, and a front surface of the basic body facing the contact surface has a vertically running concave curvature, wherein the basic body in a region of an upper end of the contact surface comprises a ramp, which with respect to a portion of the front surface of the basic body arranged below the upper end is directed towards the front.

2. The head restraint according to claim 1, wherein the head restraint is for a backrest of a motor vehicle seat.

3. The head restraint according to claim 1, wherein the basic body is configured stiff.

4. The head restraint according to claim 1, wherein the basic body is in one piece.

5. The head restraint according to claim 1, wherein the basic body is formed of plastic.

6. The head restraint according to claim 5, wherein the basic body is formed as plastic injection molding.

7. The head restraint according to claim 1, wherein the basic body on the front surface comprises a depression that comprises a vertically running concave curvature and a horizontally running concave curvature.

8. The head restraint according to claim 1, wherein a surface of the basic body in a lower portion is arranged substantially vertically.

9. The head restraint according to claim 8, wherein the surface of the basic body in a region of the lower half of the basic body is arranged substantially vertically.

10. The head restraint according to claim 1, wherein the basic body is completely surrounded by the foam body.

11. The head restraint according to claim 1, wherein the ramp extends in width direction of the basic body in a region of its upper end.

12. The head restraint according to claim 11, wherein the ramp extends in width direction of the basic body in the region of its upper end, in a middle region of the basic body.

13. The head restraint according to claim 1, wherein a front end of the ramp runs along a horizontal.

14. The head restraint according to claim 1, wherein a thickness of the foam body in the region of the ramp is smaller than the thickness of the foam body in a region of the contact surface located below the ramp.

15. The head restraint according to claim 14, wherein the thickness of the foam body from the region of the ramp as far as to a lower end of the basic body increases in size.

16. The head restraint according to claim 1, wherein a thickness of the foam body between the ramp of the basic body and the contact surface of the foam body is about 8 to about 10 mm and the thickness of the foam body from the ramp as far as to a vertical middle of a surface of the basic body increases to about 12 to about 18 mm.

17. The head restraint according to claim 16, wherein the thickness of the foam body between the ramp of the basic body and the contact surface of the foam body is about 8 to about 10 mm and the thickness of the foam body from the ramp as far as to a vertical lower end of the surface of the basic body increases to about 25 to about 30 mm.

18. The head restraint according to claim 1, wherein the foam body in a region of the contact surface comprises an upper protrusion directed towards the front at a top and a lower protrusion directed towards the front at a bottom.

19. The head restraint according to claim 18, wherein a line touching the upper and lower protrusions is arranged at an angle of ≧

0°

, wherein at an angle >

0°

the lower protrusion is arranged in front of the upper protrusion.

20. The head restraint according to claim 1, wherein the foam body in a region of the contact surface comprises a horizontal, concave curvature and/or vertical, concave curvature adapted to a curvature of the head of a vehicle occupant in a region at a back of the head of the vehicle occupant.