Trim cover assembly with elastically deformable fasteners

1. A vehicle seat assembly comprising:

a frame;

a cushion supported on the frame;

a trim cover having a seating surface and secured over the cushion and inflatable bladder, the trim cover comprising a leather trim material;

an inflatable bladder that expands and retracts in a vertical direction between an extended position and a retracted position to provide varying comfort to a user, the inflatable bladder disposed between the cushion and the frame and extending the cushion and displacing the seating surface in the vertical direction when moving between the extending and retracted positions;

and

at least two trim fasteners, each positioned on opposite lateral sides of the comfort system, each trim fastener connected to the trim cover at a first end and attached to one of the frame and cushion at a second end for retaining the trim cover to the cushion,

wherein each trim fastener comprises an elastomeric material, such that when the bladder inflates to the extended position, the fastener elastically elongates to allow the trim cover to expand while minimizing deformation of the leather trim material.

2. The vehicle seat assembly of claim 1 wherein the elastomeric material has a modulus of elasticity less than a pressure exerted by the inflatable bladder.

3. The vehicle seat assembly of claim 1 wherein each trim fastener further comprises a hook disposed at the second end, secured to at least one of the cushion and frame.

4. The vehicle seat assembly of claim 1 wherein the trim cover comprises a central portion connected to at least one bolster portion along at least one intermediate seam,

wherein the inflatable bladder is positioned along the central portion and at least one of the two trim fasteners is attached to the trim cover along the intermediate seam.

5. The vehicle seat assembly of claim 1 , wherein the trim cover comprises two intermediate seams and two bolster portions each connected on opposite sides of a central portion by one of the two intermediate seams, and

wherein each of the two trim fasteners connected to the trim cover along one of the two intermediate seams.

6. A seat assembly comprising:

a frame;

a cushion supported on the frame and having a seating surface, a cushion thickness defined between the frame and the seating surface;

a trim cover having a seating surface secured over the cushion;

a movable comfort system to provide varying comfort to a user, wherein the comfort system moves relative to the frame and cushion and displaces the seating surface in a thickness direction between a retracted position and an extend position having an extended thickness from the frame that is greater than a retracted thickness;

and

at least two elastically deformable trim fasteners each positioned on opposite lateral sides of the comfort system, each of the trim fasteners attached to the trim cover at a first end and attached to one of the frame and cushion at a second end for retaining the trim cover to the cushion,

whereby when the comfort system moves to the extended position, the cushion thickness is increased and the fastener elastically deforms in the thickness direction to allow the trim cover to expand while minimizing deformation of the trim material.

7. The seat assembly of claim 6 wherein the trim fastener is positioned laterally adjacent the movable comfort system.

8. The seat assembly of claim 6 wherein the trim fastener is sewn to the trim cover at the first end.

9. The seat assembly of claim 6 the trim cover comprises a central portion connected to at least one bolster portion along an intermediate seam,

wherein the moveable comfort system is positioned along the central portion, and

wherein at least one of the trim fasteners is attached to the trim cover along the intermediate seam.

10. The vehicle seat assembly of claim 6 , wherein the trim cover further comprises two bolster portions each connected on opposite sides of a central portion by one of two intermediate seams, and

wherein each of the two trim fasteners connected to the trim cover along one of the two lateral seams.

11. The seat assembly of claim 6 wherein the trim fastener further comprises a hook disposed at the second end, wherein the hook is secured to at least one of the cushion and frame.

12. The seat assembly of claim 6 wherein the movable comfort system includes an inflatable bladder.

13. A trim cover assembly securable over a cushion, the trim cover assembly comprising:

a leather trim material having a seating surface; and

at least two elastically deformable trim fasteners attached to the leather trim material for retaining the trim material to the cushion, each of the trim fasteners spaced apart laterally,

whereby each trim fastener elastically deforms in a thickness direction being generally perpendicular to the seating surface between an extended position and a retracted position to allow the leather trim material to expand while minimizing deformation,

wherein the leather trim material further comprises two bolster portions connected on opposite lateral sides of a central portion by seams, wherein one trim fastener is attached to the leather trim material along each seam.

14. The trim cover assembly of claim 13 wherein each trim fastener is attached to the leather trim material at a first end.

15. The trim cover assembly of claim 14 wherein each trim fastener is sewn to the trim leather trim material.

16. The trim cover assembly of claim 14 wherein each trim fastener further comprises a hook disposed at a second end.

17. The trim cover assembly of claim 16 wherein the hook further comprises a J-hook at the second end.

18. The trim cover assembly of claim 13 further comprising at least four trim fasteners, wherein two trim fasteners are positioned along each seam.