Upholstery structure of a vehicle seat with spring elements

Patent metadata

Field	Value
Publication number	US-12448013-B2
Application number	US-202318473445-A
Country	US
Kind code	B2
Filing date	Sep 25, 2023
Priority date	Oct 6, 2022
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

The invention relates to a vehicle seat, in particular for rail transport, with a seat part, with a backrest part and with a soft upholstery section arranged on at least one hard seat plate for upholstering a seat surface of the seat part, in which the upholstery section has an upholstery cover on the upper side and an upholstery foam section which covers the entire surface of the upholstery cover, the upholstery foam section having at least one recess on the underside in which a plurality of foam spring elements arranged next to one another in the form of hollow cylinders are embedded.

First claim

What is claimed is:

1. A vehicle seat, in particular for rail transport, comprising:
a seat part;
a backrest part; and
a soft upholstery section arranged on at least one hard seat plate for upholstering a seat surface of the seat part, wherein the upholstery section has an upholstery cover on an upper side and an upholstery foam section, wherein an entire surface of the upholstery foam section is covered by the upholstery cover,
wherein the upholstery foam section has on its underside at least one recess in which a plurality of hollow-cylindrical spring elements made of foam material, arranged next to one another are embedded, and
wherein a foam mat extending in a seat plane of the seat part extends between an underside of the hollow-cylindrical spring elements and the seat plate.

2. The vehicle seat according to claim 1 , wherein longitudinal axes of the hollow-cylindrical spring elements extend perpendicularly to a seat plane of the seat part.

3. The vehicle seat according to claim 1 , wherein each hollow-cylindrical spring element has an external diameter in a range of 10 mm-100 mm.

4. The vehicle seat according to claim 1 , wherein the foam mat has a thickness in a range of 0.5 mm-20 mm.

5. The vehicle seat according to claim 1 , wherein each hollow-cylindrical spring element has an external diameter in a range of 30 mm-80 mm.

6. The vehicle seat according to claim 1 , wherein cylinder walls of the spring elements, which are formed in a shape of a hollow cylinder, have numerous recesses and hollow chambers.

7. The vehicle seat according to claim 6 , wherein the recesses are formed as slots which extend both in a vertical direction of the spring elements of hollow-cylindrical design and radially in a direction of a central longitudinal axis of each spring element.

8. The vehicle seat according to claim 1 , wherein each hollow-cylindrical spring element has a height in a range of 1 mm-100 mm.

9. The vehicle seat according to claim 1 , in that each spring element, which is of hollow-cylindrical design, has an external diameter in a range of 5 mm-300 mm.

10. The vehicle seat according to claim 1 , wherein, as viewed in a seat longitudinal direction, the recess has spring elements arranged outside of a central area of the seat part with a higher spring pressure than spring elements in the central area of the seat part.

11. The vehicle seat according to claim 1 , wherein the seat plate has at least one upwardly extending rim which surrounds the hollow-cylindrical spring elements or subdivides them and projects into the at least one recess.

12. The vehicle seat according to claim 1 , wherein the foam mat has a thickness in a range of 1 mm-10 mm.

13. The vehicle seat according to claim 1 , wherein each hollow-cylindrical spring element has a height in a range of 10 mm-30 mm.

14. The vehicle seat according to claim 1 , wherein each hollow-cylindrical spring element has a height in a range of 5 mm-50 mm.

15. The vehicle seat according to claim 1 , wherein a fleece layer having a thickness in a range of 0.05 mm-5 mm is arranged between the upper sides of the spring elements of hollow-cylindrical spring elements and the underside of the upholstery foam section.

16. The vehicle seat according to claim 15 , wherein the fleece layer has a thickness in a range of 0.1 mm-0.5 mm.

17. A vehicle seat, comprising:
a seat part;
a backrest part; and
a soft upholstery section arranged on at least one hard seat plate for upholstering a seat surface of the seat part, wherein the upholstery section has an upholstery cover on an upper side and an upholstery foam section, wherein an entire surface of the upholstery foam section is covered by the upholstery cover,
wherein the upholstery foam section has on its underside at least one recess in which a plurality of hollow-cylindrical spring elements made of foam material and arranged next to one another are embedded, and
wherein, as viewed in a seat longitudinal direction, the at least one recess has spring elements arranged outside of a central area of the seat part with a higher spring pressure than spring elements in the central area of the seat part.

Assignees

• Grammer Ag

Inventors

• Pöllinger Thomas
• Neidl Christopher
• Wegmann Sebastian

Classifications

• B60N2/7035

  Cushions · CPC title

• B60N2/686 Primary

  Panel like structures · CPC title

• B60N2/707

  with rubber blocks · CPC title

• B60N2/58

  Seat coverings · CPC title

• B60N2/90

  Details or parts not otherwise provided for · CPC title