Lightweight headrest assembly

1. A headrest assembly comprising:

a headrest frame;

a pad mounted at a front surface of the headrest frame;

loops protruding from a back surface of the headrest frame and insertable through openings in a seat back panel, each of said loops defining a loop opening; and

a retainer insertable through the loops for securing the headrest frame to the seat back panel,

wherein the retainer is in a loop form with projecting tabs, and wherein the loops comprise a circumferential array of loops disposed about the circumference of a closed shape that matches the loop form of the retainer such that the loops project in a direction normal to the retainer with the openings of the loops facing inwardly toward the axial center of the closed shape for receiving the projecting tabs of the retainer.

2. The headrest assembly of claim 1 further comprising a backing plate that has holes for insertion of the loops, the retainer insertable through the loops for securing the backing plate to the headrest frame.

3. The headrest assembly of claim 2 wherein the backing plate is made in plural pieces.

4. The headrest assembly of claim 1 wherein the loops are laid into the headrest frame as the frame is laid up from fiber-resin composite sheets or molded from plastic.

5. The headrest assembly of claim 1 wherein the loops are arranged with their openings defining a bent pathway for insertion of the retainer.

6. The headrest assembly of claim 1 wherein the loops are wire or monofilament.

7. The headrest assembly of claim 1 wherein the headrest frame is formed in a cylindrical, conical, or toroidal shape.

8. A seat back assembly comprising:

a seat back frame;

a panel mounted on the frame; and

a headrest attached to the panel, the headrest including a headrest frame; a pad mounted at a front surface of the headrest frame; loops protruding from a back surface of the frame through holes of the panel, each of said loops defining a loop opening; and a retainer inserted through the loops for securing the headrest frame to the panel,

wherein the retainer is in a loop form with projecting tabs, and wherein the loops comprise a circumferential array of loops disposed about the circumference of a closed shape that matches the loop form of the retainer such that the loops project in a direction normal to the retainer with the openings of the loops facing inwardly toward the axial center of the closed shape for receiving the projecting tabs of the retainer.

9. The seat back assembly of claim 8 further comprising a backing plate that has holes for insertion of the loops, the retainer insertable through the loops for securing the backing plate to the headrest frame.

10. The seat back assembly of claim 9 wherein the backing plate is made in plural pieces.

11. The seat back assembly of claim 8 wherein the loops are laid into the headrest frame as the frame is laid up from fiber-resin composite sheets or molded from plastic.

12. The seat back assembly of claim 8 wherein the loops are arranged with their openings defining a bent pathway for insertion of the retainer.

13. The seat back assembly of claim 8 wherein the panel is a mesh diaphragm.

14. The seat back assembly of claim 8 wherein the loops are inserted through grommets provided in the panel.

15. The seat back assembly of claim 8 wherein the loops are wire or monofilament.

16. The seat back assembly of claim 8 wherein the headrest frame is formed in a cylindrical, conical, or toroidal shape.

17. A method for attaching a headrest assembly to a seat back assembly, comprising:

providing holes through a panel of the seat back assembly;

providing loops protruding from a rear surface of the headrest assembly, each of said loops defining a loop opening;

inserting the loops of the headrest assembly through the corresponding holes of the seat back assembly; and

inserting a retainer through the loops to fasten the headrest assembly to the seat back assembly;

wherein the retainer is in a loop form with projecting tabs, and wherein the loops comprise a circumferential array of loops disposed about the circumference of a closed shape that matches the loop form of the retainer such that the loops project in a direction normal to the retainer with the openings of the loops facing inwardly toward the axial center of the closed shape for receiving the projecting tabs of the retainer.

18. The method of claim 17 further comprising, before inserting the retainer through the loops, inserting the loops through holes of a backing plate that the retainer then locks to the seat back panel and to the headrest assembly.