Fixed attachment for hog ring tie-down trench

Patent metadata

Field	Value
Publication number	US-10933786-B2
Application number	US-201816162484-A
Country	US
Kind code	B2
Filing date	Oct 17, 2018
Priority date	Nov 27, 2017
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

A vehicle seat includes a foam body having a first region, a second region, a top surface, and a bottom surface, and a trench defined by and between the first and second regions. The trench includes at least one section including a narrow portion having a first width and extending downwardly into the trench from the top surface, and a base portion below the narrow portion having a second width greater than the first width. The vehicle seat further includes a trim attachment fixture disposed in the foam body below the trench, wherein the trim attachment fixture is configured to be secured to a trim cover by an attachment member disposed in the base portion.

First claim

What is claimed is:

1. A vehicle seat cushion comprising:
a foam body having a first region and a second region, the foam body having a top surface and a bottom surface;
a trench defined by and between the first and second regions of the foam body, the trench being continuous and having uniform cross-section portions along the trench and at least one non-uniform section disposed between the uniform cross-section portions, each of the at least one non-uniform section including a narrow portion extending downwardly into the trench from the top surface, the narrow portion having a first width, and a base portion below the narrow portion having a second width, the second width being greater than the first width, and each of the uniform cross-section portions including the narrow portion to be continuous with the non-uniform section and having a uniform width of the first width throughout the depth of the uniform cross-section portions, the non-uniform section having a greater depth from the top surface than the depth from the top surface of the uniform cross-section portions; and
a trim attachment fixture disposed in the foam body below the trench,
wherein the trim attachment fixture is configured to be secured to a trim cover by a trim attachment member disposed in the base portion, and the non-uniform sections are discrete attachment windows between uniform cross-section portions.

2. The vehicle seat cushion of claim 1 , wherein the non-uniform section further includes a mid-section extending between and connecting the narrow portion and base portion of the trench.

3. The vehicle seat cushion of claim 2 , wherein the mid-section has a top end having the first width at the narrow portion, and a bottom end having the second width at the base portion.

4. The vehicle seat cushion of claim 1 , wherein the first width is 1 to 5 mm, and the second width is 5 to 25 mm.

5. The vehicle seat cushion of claim 1 , wherein the foam body defines a window substantially free of foam between the trim attachment fixture and the base portion.

6. The vehicle seat cushion of claim 1 , wherein the base portion has a cylindrical shape.

7. The vehicle seat cushion of claim 1 , wherein the narrow portion has a depth of 1 to 50 mm downward from the top surface, and the base portion has a depth of 1 to 20 mm downward towards the bottom surface.

8. The vehicle seat cushion of claim 1 , wherein the vehicle seat includes at least two non-uniform sections, with one non-uniform section per 50 to 150 mm of trench.

9. The vehicle seat cushion of claim 8 , wherein each non-uniform section is spaced apart from another section by 5 to 150 mm.

10. The vehicle seat of claim 1 , wherein the vehicle seat includes at least three non-uniform sections, with each non-uniform section is spaced apart from another section by 5 to 150 mm.

11. A vehicle seat assembly comprising:
a foam body having a first region and a second region, the foam body having a top surface and a bottom surface;
a continuous trench defined by and between the first and second regions of the foam body, the trench having a plurality of uniform sections, each uniform section including a narrow portion extending downwardly into the trench from the top surface of the foam body, the narrow portion having a first width throughout a uniform section depth, and at least one attachment section between uniform sections, each attachment section including the narrow portion throughout the uniform section depth to form the continuous trench between uniform and attachment sections, and including a corresponding base portion below the narrow portion such that each attachment section has a depth greater than the depth of the uniform section from the top surface as defined by a base portion depth, the base portion having a second width and configured to receive an attachment member, the second width being greater than the first width; and
a trim attachment fixture disposed in the foam body below the trench; and
a trim cover configured to be secured to the trim attachment fixture by the attachment member at the base portion at each section of the trench.

12. The vehicle seat assembly of claim 11 , wherein each attachment section including a base portion is spaced from another attachment section including a base portion by 5 to 150 mm.

13. The vehicle seat assembly of claim 11 , wherein the attachment member is a hog-ring tie down.

14. The vehicle seat assembly of claim 11 , wherein each attachment section of the trench further includes a mid-section extending from and connecting the narrow portion to the base portion.

15. The vehicle seat assembly of claim 14 , the mid-section has a top end having the first width at the narrow portion, and a bottom end having the second width at the base portion.

16. The vehicle seat assembly of claim 11 , wherein the base portion has a depth of 1 to 20 mm.

17. The vehicle seat assembly of claim 11 , wherein the first width is 1 to 5 mm, and the second width is 5 to 25 mm.

18. A method of making a vehicle seat assembly, the method comprising:
providing a foam body having a first region, second region, and a continuous trench defined by and between the first and second regions, the continuous trench including a narrow portion extending into the trench from a surface of the foam body, the narrow portion defining a plurality of uniform sections along the trench having a first width throughout a uniform section depth, and defining at least one attachment section between uniform sections, each of the at least one attachment section including a base portion below the narrow portion having a second width and configured to receive an attachment member, the second width being greater than the first width, and the depth from the top surface of each of the at least one attachment section is greater than the depth from the top surface of the uniform section;
providing a trim attachment fixture in the foam body below the trench, the trim attachment fixture being a wire; and
securing a trim cover to the trim attachment fixture by deploying the attachment member in the base portion of the section of the trench.

19. The method of claim 18 , wherein securing the trim cover includes applying a hog-ring tie down in the base portion and around the trim attachment fixture.

20. The method of claim 18 , wherein the first width is 1 to 5 mm, and the second width is 5 to 25 mm.

Assignees

• Lear Corp

Inventors

• Krause Timothy
• Duso Mark
• Van Bergen Josh A

Classifications

• B60N2/5825 Primary

  by hooks, staples, clips, snap fasteners or the like · CPC title

• B60N2/7017

  characterised by the manufacturing process; manufacturing upholstery or upholstery springs not otherwise provided for · CPC title

• B60N2/7035

  Cushions · CPC title

• B60N2/72 Primary

  Attachment or adjustment thereof · CPC title