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DE-102024203685-B4 - SEAT CUSHION, SEAT UNIT AND VEHICLE SEAT

DE102024203685B4DE 102024203685 B4DE102024203685 B4DE 102024203685B4DE-102024203685-B4

Abstract

Seat cushion (200) for a seat unit (101) of a seat, in particular a vehicle seat (100), wherein the seat cushion (200) is designed as a foam-free seat cushion (200) and is characterized by: - an elastic seat cushion (208) which is formed from a plurality of elastic cushion units (210), wherein the elastic cushion units (210) each - two opposing and spaced-apart flexible surfaces (210.1, 210.2) and - comprising a number of lever elements (212) which movably connect the flexible surfaces (210.1, 210.2) to each other, wherein the respective support unit (210) comprises at least one associated fastening element (214) for detachable attachment to the seat unit (101).

Inventors

  • Thomas Frotz

Assignees

  • ADIENT US LLC

Dates

Publication Date
20260513
Application Date
20240419

Claims (15)

  1. Seat cushion (200) for a seat unit (101) of a seat, in particular a vehicle seat (100), wherein the seat cushion (200) is designed as a foam-free seat cushion (200) and is characterized by: - an elastic seat pad (208) which is formed from a plurality of elastic support units (210), wherein the elastic support units (210) each comprise - two opposing and spaced-apart flexible surfaces (210.1, 210.2) and - a number of lever elements (212) which movably connect the flexible surfaces (210.1, 210.2) to one another, wherein the respective support unit (210) comprises at least one associated fastening element (214) for detachable attachment to the seat unit (101).
  2. Seat cushion (200) according to Claim 1 , wherein the respective support unit (210) comprises the fastening element (214) at two opposing outer edges (210.3, 210.4).
  3. Seat cushion (200) according to Claim 1 or 2 , wherein the respective support unit (210) comprises the fastening element (214) on one of the flexible surfaces (210.2).
  4. Seat cushion (200) according to one of the preceding claims, wherein the fastening elements (214) of two adjacent support units (210) are oriented in opposite directions.
  5. Seat cushion (200) according to one of the preceding claims, wherein two adjacent fastening elements (214) of two adjacent support units (210) in a deformed position (400) form a deformation section (216).
  6. Seat cushion (200) according to one of the preceding claims, wherein the elastic support units (210) are designed such that the elastic seat cushion (208) deforms in a pressure-stable manner.
  7. Seat cushion (200) according to one of the preceding claims, wherein the fastening elements (214) are designed and arranged such that at least one of the elastic support units (210) is laterally stabilized.
  8. Seat cushion (200) according to one of the preceding claims, wherein the several elastic support units (210) are arranged side by side such that their flexible surfaces (210.1, 210.2) are arranged adjacent to each other and each form a front surface (210.1) and a rear surface (210.2).
  9. Seat cushion (200) according to Claim 8 , wherein the front surface (210.1) is designed as a flexible bearing surface and the rear surface (210.2) as a flexible support surface.
  10. Seat cushion (200) according to one of the preceding claims, wherein the lever elements (212) of adjacently arranged support units (210) are oriented in the same direction.
  11. Seat cushion (200) according to one of the preceding claims, wherein the lever elements (212) of two adjacent support units (210) are oriented in opposite directions.
  12. Seat cushion (200) according to one of the preceding claims, wherein the lever elements (212) and the flexible surfaces (210.1, 210.2) of a respective support unit (210) form a deformation cell (224).
  13. Seat cushion (200) according to one of the preceding claims, wherein two lever elements (212) arranged side by side of two support units (210) arranged side by side form a deformation cell (224).
  14. Seating unit (101) for a vehicle seat (100), in particular a headrest (118), a seat part (102) and/or a backrest (104), comprising at least one seat cushion (200) according to one of the preceding claims.
  15. Vehicle seat (100), comprising a seat unit (101) according to Claim 14 .

Description

The invention relates to a seat cushion for a seat unit of a vehicle seat, a seat unit with such a seat cushion and a vehicle seat. State of the art From WO 2020/201384 A1, a kinetic structural component is known which has an internal flexible structure that is movable between a compressed and an expanded position, or vice versa. In an application for a seat component, the structural component is arranged below a foam padding and coupled to its movement. DE 10 2007 054 257 A1 A seat back with a curved, elastic section is known. From the DE 10 2005 054 125 B3 A seat with a backrest is known, in whose lumbar region pivotable, inflexible and spaced-apart struts extend diagonally downwards from a back wall to a front wall. DE 101 42 995 A1 A backrest with attached padding is known. Task The object of the present invention is to provide a particularly simple and comfortable seat cushion, a seat unit with such a seat cushion and a vehicle seat with such a seat unit. Solution The first problem is solved according to the invention by a seat cushion having the features of claim 1. The second problem is solved according to the invention by a seat unit having the features of claim 14. The third problem is solved according to the invention by a vehicle seat having the features of claim 15. The object of the invention is achieved with a seat cushion for a seat unit of a seat, in particular a vehicle seat, wherein the seat cushion is designed as a foamless or foam-free seat cushion and is characterized by an elastic seat pad formed from a plurality of elastic support units, wherein the elastic support units each comprise two opposing and spaced-apart flexible surfaces and a number of lever elements which movably connect the flexible surfaces to each other, wherein the respective support unit comprises at least one associated fastening element for detachable attachment to the seat unit. The advantages achieved with the invention lie particularly in the fact that a seat cushion is created for a seat unit that is largely or entirely free of foam and is simultaneously comfortable, ergonomically deformable and resilient, and can also be detachably attached to the seat unit. With such a seat cushion, the formation of depressions, which is common with foam cushions after prolonged use, is largely avoided. Furthermore, the seat cushion can be easily retrofitted to the seat unit or replaced with an existing seat cushion. Polypropylene is used particularly as a foam substitute. The elastic support units can, for example, be made entirely of polypropylene. This means that both the flexible surfaces and the lever elements can be made of polypropylene. The lever elements can be made more rigid than the flexible surfaces. In particular, the lever elements are arranged between the flexible surfaces and hinged or attached to them. Polypropylene exhibits high flexibility and heat resistance, as well as high strength and hardness. For example, each support unit includes the fastening element on two opposing outer edges. This enables a laterally stable fastening. For example, each support unit includes the fastening element on a rear or inner flexible surface. In particular, each support unit includes at least one fastening element on the inward-facing surface, and thus the inner or rear surface (also called the inside, back, bottom surface, or underside of the support unit). For example, the fastening elements of two adjacent support units can be oriented in opposite directions. For instance, the fastening elements of two adjacent support units, each designed as a band, strip, web, or lamella, can be arranged diagonally. These adjacent and oppositely oriented fastening elements can then form intersecting pivot points. Each fastening element can, for example, have two pivot points or hinge points (also called articulation points). These two pivot points or hinge points are located on the inner side of the elastic seat support, facing away from the contact surface. In particular, two adjacent fastening elements of two adjacent support units form a Defor Deformation section (also called deformation cell). In both a deformed position and an initial position, the two adjacent fastening elements can form an antiparallelogram. An antiparallelogram is understood to be, in particular, a self-intersecting quadrilateral, especially a self-intersecting parallelogram (also called an inverted parallelogram). In other words, the deformation section or deformation cell can be formed by an antiparallelogram. Two pivot points or articulation points of the fastening elements can be provided, for example, on the rear flexible surface, and in particular, articulated. The opposing and intersecting points of the fastening elements can be detachably connected, for example, to the seat unit, in particular a headrest body, a backrest body, or a seat section body. The deformation section formed by the fastening elements, and in particular designed as an antiparalle