Seat cushion device and vehicle seat

Abstract

The present invention relates to a seat cushion device (200), particularly for a vehicle seat (100), comprising at least: - a seat cushion element (202) having a seat surface (204) that is at least substantially horizontal, the element having at least one recess (206) disposed in the seat surface (204); and - a support device (215), wherein the support device (215) includes at least one ergonomically shaped relief element (210) mounted in at least one recess (206) of the seat cushion element (202) in a manner that is at least movable in the vertical direction. The invention also relates to a vehicle seat (100) having such a seat cushion device (200).

Description

Technical Field

[0001] This invention relates to a seat cushion device, particularly a seat cushion device for a vehicle seat, and to a vehicle seat. Background Technology

[0002] US 9,802,521 B2 discloses a multi-layer vehicle seat with inflatable airbags for adjusting the firmness of the seat cushion and backrest. The vehicle seat assembly includes a multi-layer assembly, which further includes a spring layer with adjustable springs, a flexible plate supported by the spring layer, an airbag assembly disposed on the flexible plate, a thin foam layer disposed above the airbag assembly, and a frame-supported carrier, wherein the spring layer is embedded in the carrier.

[0003] US 10,286,818 B2 discloses a vehicle seat assembly having a backrest and a seat surface. The seat surface is functionally connected to the backrest. A first spring assembly is included in the seat base. The first spring assembly includes a spring element functionally connected to the seat surface, one or more adjustable springs disposed above the seat surface, flexible side wings of the seat surface, a seat cushion assembly disposed above the spring element, and hinged side wings of the seat cushion assembly. A second spring assembly is also included in the seat base. The second spring assembly includes a plurality of independent thigh supports functionally connected to the front portion of the seat surface.

[0004] US 9,108,553 B2 discloses a vehicle seat spring assembly including a rear support for engaging with a torsion tube of a vehicle seat. End portions of first and second spring elements are connected to the rear support. Each of the first and second spring elements is equipped with an intermediate buffer housing connector. A lateral strut is coupled to the first and second spring elements and has openings for power and data cables.

[0005] US 2010 / 237082 A1 discloses a pad having an elastic gel layer disposed on a foam layer. The gel layer of the pad may have geometric recesses, such as pleats, grooves, corrugations, wrinkles, points, or any desired combination thereof. Geometric cutouts may be circular, square, trapezoidal, triangular, rectangular, rectangular with rounded corners, semicircular, or any desired combination thereof. Geometric cutouts may also be hollow to further reduce gel content. The shape of the gel layer may differ from, or be unrelated to, the shape of any point or geometric cutout in the foam layer. Furthermore, the foam layer of the cushioning pad may have a geometric shape, and the geometric cutouts may have, for example, pointed, folded, grooved, corrugated, wrinkled shapes, or any desired combination thereof. Geometric cutouts may be circular, square, trapezoidal, triangular, rectangular, rectangular with rounded corners, semicircular, or any desired combination thereof. To further reduce foam content, the geometric cutouts may also be hollow. The gel layer may be fused, bonded, or integrally molded with the foam layer. The layers can be combined or connected to form flat surfaces on flat surfaces, pointed surfaces on pointed surfaces (e.g., nested or interlocked), or pointed surfaces on flat surfaces. All these combinations provide different levels of support and cushioning for the end user. Furthermore, different cushioning or support effects can be provided on both sides, allowing the pad to be flipped to meet the user's desired level of support and comfort. The pad's overlays can also have different colors and textures.

[0006] US 2017 / 065085 A1 discloses an improved foam seat cushion that is ergonomically shaped and features cutouts for proper seating and potential centering on a seat, as well as multiple cooling channels running through the cushion. In some cases, the foam seat cushion has handles attached to both sides and can be folded in the middle for easy transport. In some further examples, the foam seat cushion includes a filling layer disposed above the foam layer. The foam seat cushion consists of a foam layer having an upper side, a lower side, a first front side, a first rear side, and multiple edge sides; it has a cutout disposed approximately in the middle of the first rear side, extending between the upper and lower sides of the foam layer and extending from the first rear side toward the middle of the foam layer to partially bisect the foam layer and form a cutout side perpendicular to the upper and lower sides; multiple channels running through the foam layer with openings on the upper and lower sides; and a breathable and moisture-permeable, removable, custom-designed overlay having at least one compartment for sealing the foam layer.

[0007] WO 01 / 28388 A1 discloses a seat with various auxiliary cushions to prevent seat pain. Summary of the Invention

[0008] Purpose The object of the present invention is to improve the type of seat cushion device mentioned in the introduction, and in particular to design it in such a way that when a user sits on it uses the seat cushion device, the maximum pressure on the surface is reduced, the total contact surface area is increased, and the average pressure on the surface of the seat cushion element is reduced, thus providing a suitable vehicle seat.

[0009] Solution According to the present invention, this objective is achieved by a seat cushion device, which is particularly suitable for vehicle seats and includes at least the following: - A seat cushion element, comprising at least a generally horizontal seat surface and at least one recess disposed in the seat surface, and - A support device, wherein the support device includes at least one support element and at least one (particularly ergonomically shaped) relief element, the support element being formed as a suspension pad disposed below a seat element, and the relief element being mounted in at least one recess of the seat element in a manner that allows for movement at least in the vertical direction.

[0010] The terms "horizontal" and "vertical" here refer to a Cartesian coordinate system, where the x-axis represents the longitudinal direction as seen from the user's perspective of the seat cushion, the y-axis represents the lateral direction, and the z-axis represents the vertical direction. This makes the xy-plane a horizontal plane.

[0011] According to the invention, a recess is provided or formed in the seat cushion element, and a relief element is arranged in the recess. This relief element is particularly ergonomically shaped, i.e., its shape and placement within the seat surface allow it to function at points where increased pressure is applied to the user's body when using a conventional seat cushion device. These points are particularly the point where the ischial tuberosities press against the seat surface, and / or the point below the coccyx.

[0012] According to the invention, the relief element is vertically movable within the recess; that is, it can yield to pressure applied in the vertical z-direction. In particular, the relief element can yield to pressure applied in the z-direction (also known as the vertical or orthogonal direction) by deformation of the relief element (e.g., by compression and / or deflection), or by a downward-directed yielding movement of the relief element, or by a combination of deformation and yielding movement.

[0013] Because the relief element is particularly ergonomically shaped, and because it is arranged vertically movable within the recess of the seat cushion element, a separate load-bearing member can be provided for the seat (e.g., a vehicle seat) in the area of ​​maximum load capacity of the seat cushion (i.e., below the ischial tuberosities). This member is advantageously sized and positioned to accommodate all body sizes from P05 women to P95 men. Functionally, this member helps reduce peak pressure (up to 30%) at the contact surface area, increases the total contact surface area, and reduces average pressure at the contact surface area on the upper side of the seat cushion.

[0014] Furthermore, the at least one support element is formed as a suspension pad, particularly a resilient support frame, and is arranged below the seat cushion element. In particular, the suspension pad is designed to be resilient or flexible, such that the seat cushion element is designed to be movable relative to the whole, particularly flexible, resilient, or resilient.

[0015] Advantageous improvements (which may be used alone or in combination with each other) are the subject of the dependent claims.

[0016] In the proposed type of seat cushion device, it can be specified, for example, that the recess is designed as a depression in the seat surface of the seat cushion element. In an alternative improvement, it can be specified that the recess extends at least partially or completely in the seat cushion element in the vertical direction. First, the complete extension of the recess enables greater vertical movement of the relief element; second, when the relief element is no longer supported by the seat surface, the relief element can thus move vertically upward again by a restoring force originating from the underside of the seat cushion element (which can be generated, for example, by a spring element).

[0017] Furthermore, a variant can provide dual foam stiffness and dual foam density, wherein the recess or indentation does not fully penetrate or extend into the seat cushion element. In this case, the relief element can also be secured to the seat cushion element via local ribs and / or struts.

[0018] In an advantageous improvement of the seat cushion device according to the invention, it may be alternatively or additionally specified that, in a plan view of the seat surface of the seat cushion element, the at least one relief element has an outer contour of at least a generally figure-eight shape and is arranged in a corresponding at least generally figure-eight-shaped recess of the seat cushion element. The term "figure-eight contour" as used herein refers to a geometric shape resembling the number 8. Alternatively, the relief element may also have a ring-shaped or butterfly- or bird-shaped form, wherein the wings are preferably elliptical in design and extend further backward or forward. Other alternative shapes of the relief element are also possible.

[0019] This geometry can be formed, for example, by connecting two circles or ellipses to each other through a narrow connecting portion, or by positioning two circles or ellipses relative to each other such that they partially overlap. This figure-eight or annular outer contour as a relief element is particularly suitable for effectively relieving two areas subjected to high pressure, for example, if the seat surface in these areas is formed by a vertically movable figure-eight or annular relief element, then the two ischial tuberosities of the person receiving relief are the points of support on the seat surface of the cushion element and their surrounding environment. To avoid creating undesirable gaps in the seat surface of the cushion element, the recesses arranged in the cushion element advantageously also have a figure-eight contour, their dimensions roughly corresponding to the dimensions of the relief element.

[0020] In another example, the side wings of the relief element can be specified to extend in a straight line. Correspondingly, the recess in the seat cushion element can have a straight inner wall. The side wings of the relief element are arranged parallel to the inner wall of the recess. Alternatively, the at least one relief element can have inclined side wings, thereby tapering downwards, and the recess of the seat cushion element has corresponding inclined side wings. The downward tapering of the relief element and the recess hinders vertical downward movement of the relief element, thus preventing slippage. However, due to the elastic properties of the seat cushion element and the relief element, relative movement of the relief element relative to the seat cushion element caused by pressure acting on it from above is still possible.

[0021] The relief element can, for example, consist of elastic, particularly open-cell foam. Alternatively, the relief element can be designed as a pad filled with elastic, particularly open-cell plastic foam, or a pad filled with liquid, or a pad filled with gel. Such a pad can, for example, have an airtight and liquid-tight covering element in which plastic foam, liquid, or gel is arranged. It can be particularly advantageously specified that the internal pressure present in the pad can be variably adjusted as needed, for example, by blowing air into or extracting or venting air from the covering element. Thus, the stiffness and height of the relief element can, for example, be adjusted to the user's weight as needed.

[0022] In addition, it can be specified that the corresponding variant filled with synthetic foam can be partially evacuated or inflated, and / or the volume or pressure of the pad or covering element in the corresponding variant filled with liquid can be increased or decreased as needed.

[0023] Furthermore, it can be advantageously specified, particularly in the case of foam cushioning elements, that the cushioning element has a higher or lower density than the seat cushion element. It can also be specified that the cushioning element has a higher or lower stiffness than the seat cushion element.

[0024] In another exemplary improvement of the seat cushion device according to the invention, the seat cushion device may be provided with a support element arranged below the seat cushion element and extending at least substantially horizontally. In particular, the suspension pad may be designed as a flat support element and may form an elastic support frame for the seat cushion element. For example, the first suspension pad may be designed as a spring base. The second suspension pad may be designed, for example, as a flat-tensioned flexible membrane, particularly a flexible textile pad, a flexible plastic pad, etc. Here, the support device may include only the first suspension pad, only the second suspension pad, or both, particularly arranged vertically relative to each other. The corresponding support element formed as a suspension pad, or both support elements formed as suspension pads, are particularly configured to support the seat cushion element and the relief element vertically, particularly flatly and elastically.

[0025] The support element, particularly the first suspension pad, may include, for example, an arrangement of spring bases, particularly wire spring elements. Advantageously, the support element may alternatively or additionally include a horizontally (i.e., at least generally in the xy plane) tensioned flexible membrane, particularly as a second suspension pad, which may be made, for example, of fabric, plastic, or a combination of fabric and plastic. The corresponding support element is arranged and designed to support the seat pad element and the relief element in the vertical direction. Depending on the structure of the seat pad assembly, this may also include only one of the suspension pads, only the first suspension pad, or only the second suspension pad. If only the second suspension pad, formed as a flat, tensioned flexible membrane, is provided, the seat pad assembly has a smaller thickness than the seat pad assembly with the first suspension pad formed only as a spring base.

[0026] One improved embodiment specifies that the corresponding support element has at least one incision. The corresponding support element can also be formed without incisions and can have a continuous surface. In particular, the corresponding support element can have at least one first incision in the ischial tuberosity region and at least one second incision in the coccyx region. For example, the first incision can include at least one through-hole, particularly a figure-eight or annular through-hole, or two circular or elliptical through-holes spaced apart from each other. The second incision can be formed, for example, as a conical, triangular, U-shaped, or semi-circular cut, groove, etc. In particular, the second incision can be formed perpendicular to the two through-holes. The second incision can also be centrally located relative to the longitudinal axis of the suspension pad. Here, the two through-holes can be arranged spaced apart from the longitudinal axis and in a line.

[0027] Furthermore, the corresponding support member may include a first (e.g., front) fastening unit and a second (e.g., rear) fastening unit, as well as a flexible support area located therebetween. For example, the respective fastening units may each extend across the width of the suspension pad. Alternatively, the respective fastening units may extend laterally, allowing the support element to be mounted laterally.

[0028] Here, it can be further specified, by way of example, that the support element has a cutout in the area of ​​at least one recess of the cushion element. This cutout in this sense can specifically be designed as an opening in the support element. For example, such an opening is smaller than the relief element disposed above it. Different combinations of holes or cutouts in the cushion allow for pressure relief of different bony prominences.

[0029] According to the invention, this objective is also achieved by a vehicle seat having a seat portion and a backrest, wherein the seat portion has a cushion device according to the invention.

[0030] A vehicle seat is proposed that reduces pressure on the user's bony prominences, particularly below the ischial tuberosity and / or coccyx, by means of vertically movable relief elements (which may be, for example, specially developed figure-eight or annular foam elements) inserted into the seat cushion elements.

[0031] In some improvements, thin-film or foil suspension pads and / or spring bases can be arranged as support elements under the seat cushion element. In further improvements, the corresponding support elements can have different combinations of holes or perforations or cut sections, which can reduce pressure on different bony prominences of the user. In particular, a first suspension pad or a second suspension pad can be arranged under the seat cushion element. Alternatively, two suspension pads can also be arranged one above the other under the seat cushion element.

[0032] The concept of a relief element (arranged in a vertically movable manner) in the recess of a seat cushion element is also effective when used as a support element on a seat with a sinusoidal spring base or a solid shell or seat frame made of metal or plastic.

[0033] In particular, two or at least one support element is arranged below the seat cushion element. Each support element, designed as a suspension pad, specifically forms a resilient support frame for the seat cushion element, in which a relief element is movably arranged.

[0034] The seat can have a conventional backrest with an adjustable backrest or a fixed backrest without an adjustable backrest. The invention is also advantageously applicable to seats with conventional mechanisms for height and longitudinal adjustment, without any compromise.

[0035] In summary, the present invention provides a seat cushion device and vehicle seat that reduces the maximum pressure on the surface of the seat cushion element, increases the total contact surface area, and reduces the average pressure on the surface of the seat cushion element by simple means, making it more comfortable for the user to sit on the seat cushion device. Attached Figure Description

[0036] The invention will now be explained in more detail with reference to the advantageous exemplary embodiments shown in the accompanying drawings. However, the invention is not limited to these exemplary embodiments. In the drawings: Figure 1 A schematic diagram of a vehicle seat with longitudinal adjustment device according to the prior art is shown. Figure 2 : A perspective view of a seat cushion assembly for a vehicle seat according to the prior art is shown. Figure 3 The image shows a perspective view of a seat cushion device according to the invention, based on a first exemplary embodiment. Figure 4 A plan view of a seat cushion device according to a first exemplary embodiment is shown. Figure 5 A perspective view of the support element according to the present invention is shown. Figure 6 It shows Figure 5 Plan view of the supporting elements. Figure 7 A plan view of another example of a support element according to the invention is shown. Figure 8 A plan view of a seat cushion device according to the invention, based on a second exemplary embodiment, is shown. Figure 9 : A perspective view of the spring base of the first suspension pad in a third exemplary embodiment of the seat cushion device is shown. Figure 10 The illustration shows a perspective view of the spring base and the membrane serving as the second suspension pad in a third exemplary embodiment. Figure 11 A perspective view of the spring base and membrane of a third exemplary embodiment is shown. Figure 12 The illustration shows a perspective view of the spring base, diaphragm, and relief element of a third exemplary embodiment. Figure 13 A perspective view of the seat cushion element and relief element of a third exemplary embodiment is shown. Figure 14 A plan view of the seat cushion device of the third exemplary embodiment is shown. Figure 15 A cross-sectional view of a third exemplary embodiment of a seat cushion device in the relief element region is shown, prior to the use of the seat surface of the seat cushion element. Figure 16 The image shows a cross-sectional view of a third exemplary embodiment of a seat cushion device in the relief element region during the use of the seat surface of the seat cushion element.

[0037] Corresponding components have the same name in all the accompanying drawings. Detailed Implementation

[0038] The following description refers to three mutually perpendicular spatial directions. Figure 1 The diagram illustrates a vehicle seat 100 in accordance with existing technology. A longitudinal direction x extends generally horizontally in the vehicle seat 100 installed in a vehicle, and preferably extends parallel to the vehicle's longitudinal direction, which corresponds to the vehicle's normal direction of travel. A lateral direction y, extending perpendicular to the longitudinal direction x, is also horizontally oriented in the vehicle and parallel to the vehicle's lateral extension. A vertical direction z extends perpendicular to both the longitudinal direction x and the lateral direction y. In the vehicle seat 100 installed in a vehicle, the vertical direction z preferably extends parallel to the vehicle's vertical axis.

[0039] The positional and orientation information used, such as front, rear, up, and down, refers to the viewing direction of an occupant seated in the vehicle seat 100 in a normal seated position, wherein the vehicle seat 100 is installed in the vehicle in a position suitable for passenger transport with the backrest 104 upright, and is generally oriented towards the direction of travel. However, the vehicle seat 100 may also be installed or moved in different orientations, such as laterally relative to the direction of travel. Unless otherwise described, the vehicle seat 100 is constructed symmetrically with respect to a plane extending perpendicular to the lateral y-axis.

[0040] The backrest 104 can be pivotally mounted on the seat portion 102 of the vehicle seat 100. For this purpose, the vehicle seat 100 may optionally include a fitting 106, particularly an adjustable fitting, a rotating fitting, a locking fitting, or a folding fitting.

[0041] The position and orientation information used, such as radial, axial, and circumferential directions, refers to the rotation axis 108 of the adjuster 106. Radial means perpendicular to the rotation axis 108. Axial means in the direction of or parallel to the rotation axis 108.

[0042] The vehicle seat 100 may optionally include a longitudinal adjustment device 110. The longitudinal adjustment device 110 includes, for example, a guide rail assembly 112 having a first track element 114 and a second track element 116. The first track element 114 is adjustable relative to the second track element 116 in the longitudinal direction (x). The first track element 114 is secured to the seat portion 102. The second track element 116 is secured to a structural element of the vehicle, such as the vehicle floor.

[0043] For clarity, the first track element 114 is referred to as the upper track 114 in the following description. The upper track 114 (also referred to as a guide rail or carriage) is assigned to the vehicle seat 100 and configured to support the vehicle seat 100. The second track element 116 is referred to as the lower track 116 below. The lower track 116 is fixedly connected to, for example, the floor of the vehicle.

[0044] Figure 2 The seat cushion device 200 shown schematically in the prior art belongs to the seat portion 102 of the vehicle seat 100 (not shown) and includes a seat cushion element 202 having a seat surface 204 that is at least generally horizontal.

[0045] Figure 3 and 4 A first exemplary embodiment of a seat cushion device 200 according to the invention is shown, which belongs to the seat portion 102 of a vehicle seat 100. As is known from the prior art, the seat cushion element 202 also includes at least a generally horizontal seat surface 204.

[0046] The seat cushion element 202 has a recess 206 arranged in the seat surface 204. The recess 206 completely penetrates the seat cushion element 202 in the vertical direction z. The recess 206 of the seat cushion element 202 has an outer contour 212, for example, a figure-eight shape, an annular shape, etc., and optionally has straight side wings 214.

[0047] Furthermore, the seat cushion device 200 includes a support device 215. The support device 215 of the seat cushion device 200 is particularly formed in multiple parts.

[0048] The support device 215 includes at least one support element 216 and at least one relief element 210. The at least one support element 216 is formed as a suspension pad 216.0, which is arranged below the seat cushion element 202. In particular, the suspension pad 216.0 is designed to be elastic or flexible, such that the seat cushion element 202 is designed to be movable relative to it as a whole, especially being flexible, elastic, or resilient. For this purpose, the corresponding suspension pad 216.0 is formed as an elastic support frame 216.3.

[0049] The at least one relief element 210 is particularly ergonomically shaped. The at least one relief element 210 is also mounted in at least one recess 206 of the seat cushion element 202 in a manner that allows it to move at least in the vertical z-direction.

[0050] The at least one support element 216, which is located below the seat cushion element 202, is designed to be flat. The at least one support element 216 extends generally horizontally.

[0051] Figure 4 A first example is shown of at least one support element 216 formed as a first suspension pad 216.1. The first suspension pad 216.1 may be designed, for example, as a horizontally tensioned spring base 220 that supports the seat pad element 202 in the vertical z-direction and forms an elastic support frame 216.3. Below the recess 206 of the seat pad element 202, the support element 216 may have a cutout 222.

[0052] The support device 215 of the seat cushion device 200 also includes at least one (particularly ergonomically shaped) relief element 210, which is mounted in at least one recess 206 of the seat cushion element 202 in a manner movable in the vertical z-direction, and in Figure 12 As shown in the diagram. For example, the relief element 210 may have a figure-eight shaped outer contour 212, designed to correspond to the recess 206, so that the relief element 210 fits precisely into the recess 206, such as... Figure 13 As shown.

[0053] Figures 5 to 7 A second example is shown of a support element 216 formed as a second suspension pad 216.2, which forms an elastic support frame 216.3. The second suspension pad 216.2 is specifically designed as a membrane 218 made of a flexible, flat material.

[0054] The second suspension pad 216.2, arranged below the seat cushion element 202, is particularly flat in design and extends generally horizontally. The second suspension pad 216.2 may, for example, be designed with a cutout 222 (in... Figure 5 and 6 (shown in) and without incision 222 (in) Figure 7 (As shown in the diagram) A horizontally tensioned membrane 218. A second suspension pad 216.2 supports the seat cushion element 202 in the vertical z-direction. Below the recess 206 of the seat cushion element 202, the second suspension pad 216.2 may have a cutout 222, such as... Figure 5 and 6 As shown.

[0055] The second suspension pad 216.2, particularly the membrane 218, may have, for example, three cuts 222 that are arranged below the user's ischial tuberosities (not shown) and coccyx (not shown) when the membrane 218 is arranged below the seat cushion element 202 of the seat cushion assembly 200.

[0056] The second suspension pad 216.2 can be formed, for example, a flat and tensioned flexible membrane 218, particularly a flexible textile pad, a flexible plastic pad, etc.

[0057] For example, the support element 216, such as the second suspension pad 216.2, may have at least one first incision 222.1 in the ischial tuberosity region 217 and at least one second incision 222.2 in the coccyx region 219.

[0058] For example, the first cutout 222.1 may include at least one via 222.1.0, particularly a figure-eight via 222.1.0 (not shown) or two spaced-apart circular vias 222.1.0 (in... Figure 5 and 6 (As shown in the image).

[0059] The second cut 222.2 can be formed, for example, as a conical, triangular, U-shaped, or semi-circular cut portion 222.2.0, a groove, etc. In particular, the second cut 222.2 can be formed perpendicularly to the two through holes 222.1.0. The second cut 222.2 can also be centrally arranged relative to the longitudinal axis of the second suspension pad 216.2. Here, the two through holes 222.1.0 can be arranged to be spaced apart from the longitudinal axis of the second suspension pad 216.2 and in a straight line.

[0060] Furthermore, the corresponding suspension pad 216.0 may include a first (e.g., front) fastening unit 216.4 and a second (e.g., rear) fastening unit 216.5, and a flexible support region 216.6 located therebetween. For example, the corresponding fastening units 216.4 and 216.5 may each extend over the width of the suspension pad 216.0.

[0061] The first two incisions 222.1 in the ischial tuberosity region 217 below the user's ischial tuberosity are simultaneously located below the recess 206, which is arranged in the seat surface 204 of the seat cushion element 202 to receive the relief element 210 (in Figure 12 (as shown in the image), and for example has a figure-eight or annular outer contour 212 and a straight inner wall 208, such as Figure 4 As shown.

[0062] Figure 4 A first exemplary embodiment of the seat cushion device 200 according to the present invention is shown, wherein a first suspension pad 216.1 serves as a support element 216 and is arranged below the seat cushion element 202.

[0063] Figure 8 A second exemplary embodiment of the seat cushion device 200 according to the invention is shown, wherein a second suspension pad 216.2 serves as a support element 216 and is arranged below the seat cushion element 202. The through hole 222.1.0 of the second suspension pad 216.2 is particularly smaller than the recess 206 of the seat cushion element 202.

[0064] Alternatively, a third exemplary embodiment of the seat cushion device 200 according to the invention may include two suspension pads 216.1, 216.2 as support elements 216, which are arranged below the seat cushion element 202, such as... Figure 9 As exemplarily shown, the seat cushion element 202 and the relief element 210 are not shown.

[0065] Figures 9 to 13 The structure of a third exemplary embodiment of the seat cushion device 200 according to the invention is shown step by step from bottom to top, each case being associated with anatomical features, namely the pelvis 300 and the ischial tuberosities 302 and coccyx 304 and femur 306 of the user sitting on the seat cushion device 200.

[0066] The lowest component of the seat cushion device 200 is Figure 9 The support element 216 shown in the form of a spring base 220 serves as a first suspension pad 216.1, which has a first incision 222.1 below the ischial tuberosity 302.

[0067] The first suspension pad 216.1 may include, for example, a plurality of particularly curved longitudinal spring lines 216.7, which are connected to each other by a transverse connector 216.8.

[0068] Secondly, in particular, the rear fastening unit 216.5 may include, for example, multiple fixing hooks 216.5.1. This makes the first suspension pad 216.1 easy to install and remove.

[0069] For example, multiple fixing portions 216.4.1 can be provided as the first fastening unit 216.4. The fixing portion 216.4.1 can be formed, for example, by the bent free end of the longitudinal spring wire 216.7. The bent free end is designed, for example, as a fixing hook 216.9, for example, for hooking.

[0070] The second suspension pad 216.2, in the form of a membrane 218, as already in use... Figure 5 and 6 As shown, it can be arranged above it as another support element 216, such as Figure 10 As shown. The second suspension pad 216.2 can, for example, serve as a front fastening unit 216.4 including a fastening strip 216.4.2 with multiple fastening openings, for example for receiving fastening elements such as clamps, rivets, screws, etc.

[0071] As a rear fastening unit 216.5, the second suspension pad 216.2 may include, for example, a fixing rod 216.5.2, which may be hooked into the fixing hook 216.5.1 of the first suspension pad 216.1.

[0072] Figure 11 It shows the relationship with Figure 10 Same view, the difference is Figure 11 The membrane 218 is shown opaquely, making the optional cutout 222 of the second suspension pad 216.2 more easily identifiable.

[0073] Figure 12 Added to the previous illustration without the seat cushion element 202. The relief element 210 is arranged on the membrane 218 and has, for example, a figure-eight shape, particularly a horizontal figure-eight, or an annular outer contour 212 and straight side wings 214. Optionally, the side wings 214 can be a sloping or tapering design (not shown in detail). The user's ischial tuberosity 302 is positioned directly above the figure-eight or annular relief element 210.

[0074] at last, Figure 13 This illustrates how the relief element 210 is arranged in a corresponding, for example, figure-eight shaped recess 206 in the seat surface 204 of the seat cushion element 202.

[0075] Figures 14 to 16 The operation of the seat cushion device 200 according to the invention is shown in the plan view and in the sectional view along the lines shown in the plan view.

[0076] In particular, from Figure 15 and 16 The cross-sectional view clearly shows that the recess 206 of the seat surface 204 of the seat cushion element 202 has a straight inner wall 208 (in Figure 2 and 8 (as shown in the diagram), and the mitigation element 210 arranged therein has inclined side wings 214. Figure 15 In the middle, the relief element 210 is not supported. In contrast, the relief element 210 is supported by the user's weight, thus it moves vertically downward in the recess 206 according to arrow 400, as... Figure 16 As shown. This yielding motion of the relief element 210 achieves the following: when a user sits on it and uses the seat cushion device 200, the maximum pressure on the surface decreases, the total contact surface area increases, and the average pressure on the surface of the seat cushion element 202 decreases.

[0077] Therefore, the support elements 216 arranged below the seat cushion element 202 and the relief element 210, particularly the first suspension pad 216.1 and / or the second suspension pad 216.2, are also formed as elastic support frames 216.3, as described above.

[0078] Name List 100 vehicle seats 102 Seating Section 104 Backrest 106 Angle Adjuster 108 Rotation axis 110 Longitudinal Adjustment Device 112 Guide rail device 114 First track element (upper track) 116 Second track element (lower track) 200 seat cushion device 202 Seat Cushion Components 204 seats 206 concavity 208 Inner Wall 210 Relief Element 212 Outer contour 214 Flanking 215 Support device 216 Support element 216.0 Suspension Pad 216.1 First suspension pad 216.2 Second suspension pad 216.3 Flexible support frame 216.4 First fastening unit 216.4.1 Fixed Part 216.4.2 Fixing strip 216.5 Second fastening unit 216.5.1 Fixing hook 216.5.2 Fixing rod 216.6 Flexible support area 216.7 Longitudinal spring wire 216.8 Lateral Connector 216.9 Fixing hook 217 Ischial tuberosity region 218 membrane 219 Coccyx region 220 Spring Base 222 Incision 222.1 First cut 222.1.0 Via 222.2 Second incision 222.2.0 Cutting Section 300 pelvis 302 Ischial tuberosity 304 Coccyx 306 femur 400 arrows x Vertical y (horizontal) z Vertical direction

Claims

1. A seat cushion device (200), comprising at least: • A seat cushion element (202) having at least a generally horizontal seat surface (204), the element having at least one recess (206) disposed in the seat surface (204), and • Support device (215), wherein The support device (215) includes at least one support element (216) formed as a suspension pad (216.0 to 216.2) disposed below the seat cushion element (202), and at least one relief element (210) mounted in at least one recess (206) of the seat cushion element (202) in a manner that is at least movable in the vertical direction.

2. The seat cushion device (200) according to claim 1. in, The recess (206) extends at least partially or completely in the vertical direction in the seat element (202).

3. The seat cushion device (200) according to claim 1 or 2. in, In a plan view of the seat surface (204) of the seat cushion element (202), the at least one relief element (210) has at least a generally figure-eight or annular outer contour (212), and the recess (206) of the seat cushion element (202) has a corresponding at least a generally figure-eight or annular outer contour (212).

4. The seat cushion device (200) according to any one of claims 1 to 3. in, The at least one relief element (210) has straight side wings (214), and the recess (206) of the seat cushion element (202) has a corresponding straight inner wall (208).

5. The seat cushion device (200) according to any one of claims 1 to 4. in, The relief element (210) is formed of elastic plastic foam, or a pad filled with elastic plastic foam, or a pad filled with liquid, or a pad filled with gel.

6. The seat cushion device (200) according to any one of claims 1 to 5. in, The relief element (210) has a higher or lower density than the seat cushion element (202).

7. The seat cushion device (200) according to any one of the preceding claims. in, The suspension pads (216.0 to 216.2) are designed as flat support elements (216) and form a flexible support frame (216.3) for the seat cushion element (202).

8. The seat cushion device (200) according to any one of the preceding claims. in, The first suspension pad (216.1) is designed as a spring base (220).

9. The seat cushion device (200) according to any one of the preceding claims. in, The second suspension pad (216.2) is designed as a flat, tensioned flexible membrane (218).

10. The seat cushion device (200) according to any one of the preceding claims. in, The corresponding support element (216) has at least one cutout (222 to 222.2).

11. The seat cushion device (200) according to any one of the preceding claims. in, The support element (216) has cutouts (222 to 222.2) in the region of at least one recess (206) of the seat cushion element (202).

12. The seat cushion device (200) according to any one of the preceding claims. in, The support element (216) has at least one first incision (222.1) in the ischial tuberosity region (217) and at least one second incision (222.2) in the coccyx region (219).

13. The seat cushion device (200) according to any one of the preceding claims. in, The support element (216) includes a first fastening unit (216.4) and a second fastening unit (216.5) and a flexible support area (216.6) located therebetween.

14. A vehicle seat (100) having a seat portion (102) and a backrest (104), wherein the seat portion (102) has a cushion device (200) according to any one of claims 1 to 13.

15. The vehicle seat (100) according to claim 14. in, The first suspension pad (216.1) and / or the second suspension pad (216.2) are arranged below the seat cushion element (202).

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