Leather trim cover assembly with stretch reduction

• US 8,783,768 B2
• Filed: 12/23/2011
• Issued: 07/22/2014
• Est. Priority Date: 01/07/2011
• Status: Active Grant

• Current Assignee: Lear Corporation
• Original Assignee: Lear Corporation
• Inventors: Severinski, Paul S., Henn, Karl, Chen, Pusheng, Welch, Thomas A. Sr., Patterson, Louella, Hulme, Larry, Paruszkiewicz, William, Messina, Benedict J., Orlando, Bryan
• Primary Examiner(s): MCPARTLIN, SARAH BURNHAM
• Application Number:
  US13/336,329
• Publication Number:
  US 20120175935A1
• Time in Patent Office: 942 Days
• Field of Search: 2972181-2185, 297/219.1, 297/224
• US Class Current: 297/218.1
• CPC Class Codes: B60N 2/5891 characterised by the manufacturing process; manufacturing seat coverings not otherwise provided for
• CPC Class Codes: Y10T 29/481 Method

Abstract

The present invention relates a vehicle seat assembly comprising a frame, a cushion supported on the frame, and a trim cover assembly secured over the cushion, the trim cover assembly comprising a leather trim material and a reinforcing layer secured to the leather trim material, the reinforcing layer being less flexible than the leather trim material, the trim cover assembly having a percent reduction in stretch relative to a similar trim cover assembly not having the reinforcing layer of 40% to 95% as measured according to SAE J855.

Claims

1. A vehicle seat assembly comprising:

a frame;

a cushion supported on the frame; and

a trim cover assembly secured over the cushion, the trim cover assembly comprising a leather trim material and a scrim reinforcing layer secured to the leather trim material, the scrim reinforcing layer having openings and a periphery and being less flexible than the leather trim material, the scrim reinforcing layer being secured to the leather trim material about its entire periphery in a continuous manner, the leather trim material having a first surface area and a main body contacting portion comprising 30-50% of the first surface area, the scrim reinforcing layer being secured to the leather trim material under the main body contacting portion, and the main body portion being defined by stitching with the scrim reinforcing layer being secured to the leather trim material by the stitching.

2. The vehicle seat assembly of claim 1 wherein the trim cover assembly has a percent reduction in stretch relative to a similar trim cover assembly not having the reinforcing layer of 40% to 95% as measured according to SAE J855.

3. The vehicle seat assembly of claim 1 wherein the leather trim material has a first surface area and the scrim has a second surface area, the second surface area being 10-80% of the first surface area.

4. The vehicle seat assembly of claim 1 wherein the trim cover assembly has a set of less than 2% as measured according to SAE J855.

5. The vehicle seat assembly of claim 1 wherein the scrim reinforcing layer has a plurality of interconnecting strands having an average thickness of 0.1 to 4.0 mm, wherein the strands interconnect to form the openings, the openings having a size of 0.25 to 5.0 mm².

6. The vehicle seat assembly of claim 1 wherein the trim cover assembly has a set of less than 1% as measured according to SAE J855, the trim cover assembly further having a percent reduction in stretch relative to a similar trim cover assembly not having the scrim reinforcing layer of 50% to 90% as measured according to SAE J855.

7. The vehicle seat assembly of claim 1 wherein the scrim reinforcing layer is defined by a plurality of intersecting strands that form the openings, the openings having a size of 0.75 to 2.0 mm².

8. The trim cover assembly of claim 1 wherein the scrim reinforcing layer is sewn directly to the leather trim material.

9. A trim cover assembly securable over a cushion supported on a frame, said trim cover assembly comprising:

a leather trim material having a first surface area and a main body contacting portion comprising a second surface area and a first periphery, the second surface area comprising 30-50% of the first surface area;

a scrim reinforcing layer having a third surface area and a second periphery, the third surface area being substantially the same as the second surface area, the second periphery of the reinforcing layer being secured in a continuous manner to the first periphery of main body contacting portion of the leather trim material, the reinforcing layer being less flexible than the leather trim material; and

a layer of backing material attached on the scrim reinforcing layer facing away from the leather trim material, the trim cover assembly having a percent reduction in stretch relative to a similar trim cover assembly not having the reinforcing layer of 40% to 95% as measured according to SAE J855, the leather trim material having a first surface area and the main body contacting portion comprising 30-50% of the first surface area, the scrim being secured to the leather trim material under the main body contacting portion, the main body portion being defined by stitching, and the scrim being secured to the leather trim material by the stitching.

10. The trim cover assembly of claim 9 wherein the trim cover assembly has a set of less than 2% as measured according to SAE J855.

11. The trim cover assembly of claim 9 wherein the scrim has a plurality of interconnecting strands having an average thickness of 0.1 to 4.0 mm, wherein the strands interconnect to form openings having an average surface area of 0.25 to 5.0 mm².

12. The trim cover assembly of claim 9 wherein the trim cover assembly has a set of less than 1% as measured according to SAE J855, the trim cover assembly further having a percent reduction in stretch relative to a similar trim cover assembly not having the scrim of 50% to 90% as measured according to SAE J855.

13. The trim cover assembly of claim 9 wherein the scrim is defined by a plurality of intersecting strands.

14. The trim cover assembly of claim 9 wherein the layer of backing material comprises a 0.5 to 5 mm layer of reticulated foam.

15. A method of manufacturing vehicle seat assembly, said method comprising:

providing a cushion assembly comprising a cushion supported on a frame; and

securing a trim cover assembly over the cushion assembly, the trim cover assembly comprising a leather trim material and a reinforcing layer having a periphery and being secured to the leather trim material in a continuous manner about the periphery, wherein the reinforcing layer comprises scrim sewn to the leather trim material, the scrim comprises intersecting strands, and the strands comprise a relatively rigid core coated with a coating, with the coating being softer than the core.