Seating

Abstract

The invention relates to a piece of seating furniture (10) comprising: a first chair leg (12), a first adjustment unit (14), a first contact surface (16), a second contact surface (18), wherein the first adjustment unit (14) is configured to mount the first contact surface (16) slidably along the first chair leg (12), wherein the first chair leg (12) is configured to provide a change in a relative position (20) between the first contact surface (16) and the second contact surface (18), wherein the relative position (20) comprises at least a seat depth adjustment (22) between the first contact surface (16) and the second contact surface (18).

Description

[0001] The present invention relates to a piece of seating furniture and a seating group. Currently, there are numerous different solutions for adjusting the height of seating surfaces in furniture. Due to the increasing number of height-adjustable desks in schools, the need for innovative and robust seating solutions is growing. Disclosure of the invention

[0002] The embodiment of the invention advantageously provides an improved seating furniture. The invention is defined in the independent claims. Advantageous further developments of the invention are described in the dependent claims and the following description.

[0003] One advantage of the seating furniture with the features of claim 1 is that the seat depth can be continuously adjusted, particularly in relation to the seat height. This allows for seat depth adjustment even with varying backrest heights, thus improving ergonomics for the user. Consequently, the seating furniture can remain usable for several years, for example, during growth phases of students, and can also support or enhance dynamic work in educational institutions. Furthermore, it can specifically prevent postural and movement-related health problems.According to the invention, this is achieved by the seating furniture having a first chair leg, a first adjustment unit, a first contact surface and a second contact surface, wherein the first adjustment unit is configured to mount the first contact surface slidably along the first chair leg, wherein the first chair leg is configured to provide a change in a relative position between the first contact surface and the second contact surface, wherein the relative position includes at least a seat depth adjustment between the first contact surface and the second contact surface.

[0004] In other words, the distance between the front edge of a seat surface and the center of the backrest surface can be adjusted to provide seat depth adjustment. This improves the ergonomics of the chair. For example, the chair can have a first leg on which the first adjustment unit is slidably mounted. Preferably, by moving the first adjustment unit, the first support surface is shifted relative to the second, thus enabling a change in position between the two surfaces. This change in position allows for seat depth adjustment.

[0005] Preferably, the first adjustment unit can be configured to mount the first contact surface slidably along a first chair leg, wherein the first adjustment unit can be configured to lock a first displacement between the first contact surface and the first chair leg by means of a first rotation of the first contact surface into a first orientation of the first contact surface, wherein the first adjustment unit can be configured to release the first displacement between the first contact surface and the first chair leg by means of a second rotation of the first contact surface into a second orientation of the first contact surface.

[0006] This allows for seat height adjustment based on seat depth. Body height is essentially proportional to thigh length. Taller individuals require a higher seating position and therefore a deeper seat, specifically a distance between the seat back and the front edge of the seat that corresponds to their thigh length. The same principle applies to shorter individuals, but in reverse. For taller individuals, gravity could compress blood vessels on an excessively short front edge of the seat. Shorter individuals require a shorter seat, as otherwise they cannot reach the backrest when their knees are bent. The first adjustment unit, by changing the relative positions, can address these issues. Furthermore, the seat depth can be adjusted with just a few simple movements using this first adjustment unit.This eliminates the need for complex mechanisms. Furthermore, operation can be intuitive if the adjustment unit is adjustable via rotations.

[0007] The dependent claims describe preferred embodiments of the invention.

[0008] Preferably, the relative position includes at least a height adjustment between the first contact surface and the second contact surface.

[0009] One advantage of this design is that, in addition to the seat depth, the seat height can also be adjusted for a given size class or age group, thus increasing the life cycle of the seating furniture.

[0010] Preferably, the seating furniture has a second adjustment unit, wherein the second contact surface is connected to the second adjustment unit, wherein the first adjustment unit is movable along a first path on the first chair leg, wherein the second adjustment unit is movable along a second path on the first chair leg, wherein a first alignment of the first path and a second alignment of the second path are arranged to provide the seat depth adjustment.

[0011] An advantage of this embodiment is that, by selectively defining the displacements along the paths, the first and second contact surfaces can provide a specific range of seat depths. In particular, a multitude of seat depths can be provided depending on the respective height. Preferably, the second adjustment unit can be configured to lock a second displacement between the second contact surface and the first chair leg by means of a third rotation of the second contact surface into a third orientation, while the first adjustment unit can release the second displacement between the second contact surface and the first chair leg by means of a fourth rotation of the second contact surface into a fourth orientation.

[0012] Preferably, the first orientation of the first path differs from the second orientation of the second path.

[0013] One advantage of this design is that the seat depth adjustment can be designed to save space and material.

[0014] Preferably, the first alignment of the first path is aligned at a predetermined angle to each other to provide the seat depth adjustment.

[0015] One advantage of this embodiment is that if there is an angle between the first path and the second path, this can be easily provided by means of a bending process.

[0016] Preferably, the predetermined angle lies within an angle range between 2° and 30°.

[0017] One advantage of this embodiment is that this angle range has proven particularly advantageous for school desks.

[0018] Preferably, the first chair leg has a first predetermined contour, wherein the first predetermined contour is configured to define the change in the relative position between the first contact surface and the second contact surface.

[0019] An advantage of this embodiment is that, through a nearly positive-locking connection between the first adjustment unit and the chair leg, the contour of the chair leg can define the direction of movement of the adjustment units. This allows, in particular, a reduction in the number of components on the seating furniture, since no further components are required to provide the movement paths of the first or second adjustment unit. Preferably, the first form-defined contour can be created by the outer surface of the first chair leg.

[0020] Preferably, the first predetermined contour is designed to arrange the first contact surface and / or the second contact surface in a ratio between the seat height of the seating furniture and the seat depth of the seating furniture.

[0021] One advantage of this embodiment is that the first chair leg can be bent into a predetermined contour, for example by means of a bending process or similar, so that a ratio between seat height and seat depth is formed between the first contact surface and the second contact surface.

[0022] Preferably, the ratio comprises a plurality of sub-areas, each sub-area having a predetermined seat depth range and a predetermined height range.

[0023] One advantage of this embodiment is that by defining the multitude of sub-areas, age groups or grade levels in particular can be defined.

[0024] Furthermore, each sub-area preferably represents a size class of seating furniture, whereby the size classes of seating furniture are defined according to DIN EN 1729-1:2015, DIN EN 1729-1:2015 / AC:2016 and / or DIN EN 1729-2:2023.

[0025] The standards DIN EN 1729-1:2015, DIN EN 1729-1:2015 / AC:2016 and / or DIN EN 1729-2:2023 primarily refer to the documents Furniture - Chairs and tables for educational institutions - Part 1: Functional dimensions EN 1729-1:2015, Furniture - Chairs and tables for educational institutions - Part 1: Functional dimensions EN 1729-1:2015 / AC:2016, Furniture - Chairs and tables for educational institutions - Part 2: Safety requirements and test methods EN 1729-2:2023.

[0026] Preferably, the first chair leg has a first section and a second section, wherein the first section and the second section are arranged at a predetermined angle to each other in order to form the first predetermined contour.

[0027] One advantage of this embodiment is that the first section and the second section can be separate components, so that if one of the two parts is defective, only that part needs to be replaced, thus increasing the repairability of the seating furniture.

[0028] Preferably, the first section and the second section of the first chair leg are connected to each other by force-fit and / or material-fit connection.

[0029] One advantage of this embodiment is that the connection between the first section and the second section can be adapted depending on the specific application profile of the seating furniture.

[0030] Preferably, the seating furniture has a second chair leg which has a second predetermined contour, wherein the first predetermined contour and the second predetermined contour are essentially the same.

[0031] One advantage of this embodiment is that the force distribution on the chair legs of the seating furniture can be improved, since a force applied to the second contact surface can be distributed across both chair legs. "Essentially the same" in this context means, in particular, a deviation in shape of + / - 5%, especially manufacturing tolerances.

[0032] Another aspect of the invention relates to a seating group comprising a seating unit as described above and below, and a height-adjustable table, wherein the height-adjustable table is configured to move a tabletop of the height-adjustable table in a predetermined area, wherein the seating unit is configured to provide a change in a relative position between a first contact surface and a second contact surface of the seating unit for a plurality of sitting and / or reclining positions in the predetermined area, wherein the relative position includes at least a seat depth adjustment.

[0033] One advantage of this design is that, through the synergy between height-adjustable table and height-adjustable chair, ergonomics can be significantly improved, and this table and chair can be used for a wide range of age groups.

[0034] Another aspect of the invention relates to a method for manufacturing a piece of seating furniture, as described above and below, comprising the steps: Providing a chair leg, forming at least one adjustment means in the chair leg so that the first adjustment unit can be arranged in different positions on the chair leg, aligning a first path of the chair leg to a second path of the chair leg to provide a seat depth adjustment of the seating furniture.

[0035] Another aspect of the invention is the use of a seating furniture, as described above and below, in particular in combination with a height-adjustable table, to create a seating option by means of the seating furniture and / or as a backrest option by means of the seating furniture.

[0036] All disclosures described above and below with respect to one aspect of the invention shall apply equally to all other aspects of the invention.

[0037] Exemplary embodiments of the invention are described in detail below with reference to the accompanying drawings. The drawings contain: Figures 1 and 2 a piece of seating furniture according to one embodiment. Figure 3 a diagram illustrating the functionality of the seating furniture according to one embodiment. Figure 4 a seating group according to one embodiment. Embodiments of the invention

[0038] The figures are schematic only and not to scale. Identical, equivalent, or similar elements with the same reference symbols may be used within the figures.

[0039] Fig. 1Figure 1 shows a seating furniture 10 according to one embodiment. The seating furniture 10 has a first chair leg 12, a first adjustment unit 14, a first contact surface 16, and a second contact surface 18. The first contact surface 14 is configured to slidably mount the first contact surface 16 along the first chair leg 12, wherein the first chair leg 12 is configured to provide a change in a relative position 20 between the first contact surface 16 and the second contact surface 18, wherein the relative position includes at least a seat depth adjustment 22 between the first contact surface 16 and the second contact surface 18.

[0040] Fig. 2Figure 1 shows a seating furniture 10 according to one embodiment. The seating furniture 10 comprises a first chair leg 12 on which a first adjustment unit 14 is slidably arranged to move the first contact surface 16 to the second contact surface 18, thus enabling a relative position change 20. The change in relative position 20 allows, in particular, a seat depth adjustment 22 between the first and second contact surfaces.

[0041] The seating unit 10 is provided with a first support surface 16 and a second support surface 18. Preferably, the relative position 20 to the seat depth adjustment 22 has a height adjustment 24 between the first support surface 16 and the second support surface 18. Thus, the seating unit 10 can be adapted for a variety of grade levels. More preferably, the seating unit 10 has a second adjustment unit 26, which is slidably or relocatably arranged on the first chair leg 12. Preferably, the second support surface 18 is connected to the second adjustment unit 26. Preferably, the first adjustment unit 14 is relocatable along a first path 28 on the first chair leg 12, wherein the second adjustment unit 26 is relocatable along a second path 30 on the first chair leg 12. Preferably, the first path 28 and the second path 30 are arranged relative to each other in such a way as to provide the seat depth adjustment 22.to provide a change in the relative position 20 between the first abutment surface 16 and the second abutment surface 18.

[0042] Preferably, the first chair leg 12 has a predetermined contour 32, which can be formed, in particular, by an outer contour of the first chair leg 12. Preferably, the first predetermined contour 32 is configured to define the change in the relative position between the first contact surface 16 and the second contact surface 18. Preferably, the first predetermined contour 32 is configured to arrange the first contact surface 16 and / or the second contact surface 18 in a ratio between a seat height 34 of the seating furniture 10 and a seat depth 36 of the seating furniture 10. Preferably, the ratio can have a plurality of sub-areas 36, each sub-area 36 having a predetermined seat depth range and a predetermined height range.More preferably, the first chair leg 12 has a first section 38 and a second section 40, wherein the first section 38 and the second section 40 are arranged at a predetermined angle to each other to form the predetermined contour 32. More preferably, the chair 10 has a second chair leg 42, which has a second predetermined contour 44, wherein the first predetermined contour 32 and the second predetermined contour 44 are substantially the same.

[0043] Fig. 3Figure 300 shows a diagram according to one embodiment. Figure 300 shows a plurality of seat heights 350 with respect to a floor 304. Figure 300 also shows a plurality of seat depths 360. Preferably, a first seat height 308 and a first seat depth 318 can form a first sub-area 36. Each sub-area 36 can have a tolerance 362 for the seat depth as well as a tolerance 364 for the seat height. More preferably, a second seat height 310 and a second seat depth 320 can form a second sub-area 36. Preferably, a third seat height 312 and a third seat depth 320 can form a third sub-area 36. More preferably, a fourth seat height 314 and a fourth seat depth 324 can form a fourth sub-area 36. Preferably, a fifth seat height 316 and a fifth seat depth 326 form a fifth sub-area 36.

[0044] Fig. 4Figure 1 shows a seating group 200 according to one embodiment. The seating group 200 preferably comprises a seating unit 10, as described above and below, and a height-adjustable table. Preferably, the height-adjustable table 100 is configured to move a tabletop 102 of the height-adjustable table 100 within a predetermined area 104, wherein the seating unit 10 is configured to provide a change in a relative position 20 between a first contact surface 16 and a second contact surface 18 of the seating unit 10 for a plurality of sitting and / or reclining positions within the predetermined area 104, wherein the relative position 20 includes at least a seat depth adjustment 22.

Claims

1. Seating furniture (10) comprising: - a first chair leg (12), - a first adjustment unit (14), - a first support surface (16), - a second support surface (18), wherein the first adjustment unit (14) is configured to mount the first support surface (16) slidably along the first chair leg (12), wherein the first chair leg (12) is configured to provide a change in a relative position (20) between the first support surface (16) and the second support surface (18), wherein the relative position (20) includes at least a seat depth adjustment (22) between the first support surface (16) and the second support surface (18).

2. Seating furniture (10) according to claim 1, wherein the relative position (20) comprises at least a height adjustment (24) between the first lying surface (16) and the second lying surface (18).

3. Seating furniture (10) according to one of the preceding claims, wherein the seating furniture (10) has a second adjustment unit (26), wherein the second contact surface (18) is connected to the second adjustment unit (26), wherein the first adjustment unit (14) is displaceable along a first path (28) on the first chair leg (12), wherein the second adjustment unit (26) is displaceable along a second path (30) on the first chair leg (12), wherein a first orientation of the first path (28) and a second orientation of the second path (30) are arranged to provide the seat depth adjustment (22).

4. Seating furniture (10) according to claim 3, wherein the first orientation of the first path (28) differs from the second orientation of the second path (30).

5. Seating furniture (10) according to one of claims 3 to 4, wherein the first alignment of the first path (28) are aligned at a predetermined angle to each other to provide the seat depth adjustment (22).

6. Seating furniture (10) according to claim 5, wherein the predetermined angle lies within an angular range between 2° and 30°.

7. Seating furniture (10) according to one of the preceding claims, wherein the first chair leg (12) has a predetermined contour (32), wherein the first predetermined contour (32) is configured to define the change in the relative position (20) between the first contact surface (16) and the second contact surface (18).

8. Seating furniture (10) according to claim 7, wherein the first predetermined contour (32) is configured to arrange the first lying surface (16) and / or the second lying surface (18) in a ratio between a seat height (34) of the seating furniture (10) and a seat depth (36) of the seating furniture (10).

9. Seating furniture (10) according to claim 8, wherein the ratio has a plurality of sub-areas (36), each sub-area (36) having a predetermined seat depth range and a predetermined height range.

10. Seating furniture (10) according to claim 9, wherein each sub-area (36) represents a size class of the seating furniture (10), wherein the size classes of the seating furniture (10) are defined according to DIN EN 1729-1:2015, DIN EN 1729-1:2015 / AC:2016 and / or DIN EN 1729-2:2023.

11. Seating furniture (10) according to one of claims 7 to 10, wherein the first chair leg (12) has a first section (38) and a second section (40), wherein the first section (38) and the second section (40) are arranged at a predetermined angle to each other in order to form the first predetermined contour (32).

12. Seating furniture (10) according to any one of claims 6 to 11, wherein the seating furniture (10) has a second chair leg (42) which has a second predetermined contour (44), wherein the first predetermined contour (32) and the second predetermined contour (44) are substantially the same.

13. Seating group (200) comprising: - a seating furniture (10) according to one of claims 1 to 12, - a height-adjustable table (100), wherein the height-adjustable table (100) is configured to move a tabletop (102) of the height-adjustable table (100) in a predetermined area (104), wherein the seating furniture (10) is configured to provide a change in a relative position (20) between a first contact surface (16) and a second contact surface (18) of the seating furniture (10) for a plurality of sitting and / or reclining positions in the predetermined area (104), wherein the relative position (20) comprises at least a seat depth adjustment (22).

14. Method for manufacturing a piece of furniture (10) according to any one of claims 1 to 12, comprising the steps of: - providing a chair leg (12), - forming at least one adjustment means in the chair leg (12) such that the first adjustment unit (14) can be arranged in different positions on the chair leg (12), - aligning a first path (28) of the chair leg (12) to a second path (30) of the chair leg (12) to provide a seat depth adjustment (22) of the furniture (10).

15. Use of a seating furniture (10) according to one of claims 1 to 12, in particular in combination with a height-adjustable table (100), to form a seating option by means of the seating furniture (10) and / or as a backrest option by means of the seating furniture (10).

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