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DE-102024133098-A1 - Seating furniture

DE102024133098A1DE 102024133098 A1DE102024133098 A1DE 102024133098A1DE-102024133098-A1

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).

Inventors

  • Ulrich Barth
  • Levin Waitangi Schwarzpaul

Assignees

  • ROCKET EDU GmbH

Dates

Publication Date
20260513
Application Date
20241112

Claims (10)

  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 Claim 1 , wherein the relative position (20) includes at least a height adjustment (24) between the first contact surface (16) and the second contact 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 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).
  5. Seating furniture (10) according Claim 4 , 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).
  6. Seating furniture (10) according Claim 5 , 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.
  7. Seating furniture (10) according Claim 6 , wherein each sub-area (36) represents a size class of the seating furniture (10), the size classes of the seating furniture (10) being defined according to DIN EN 1729-1:2015, DIN EN 1729-1:2015/AC:2016 and/or DIN EN 1729-2:2023.
  8. Seating furniture (10) according to one of the Claims 4 until 7 , 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 to form the first predetermined contour (32).
  9. Seating furniture (10) according to one of the Claims 3 until 8 , 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 essentially the same.
  10. Seating group (200) comprising: - one piece of seating furniture (10) according to one of the Claims 1 until 8 , - 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) includes at least a seat depth adjustment (22).

Description

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 school furniture. With the increasing number of height-adjustable desks in schools, the need for innovative and robust seating solutions is growing. Disclosure of the invention 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. An advantage of the seating furniture with the features of claim 1 is that the seat depth of the seating furniture can be continuously adjusted, particularly depending on the seat height. Thus, even with varying backrest heights, seat depth adjustment is possible, thereby improving the ergonomics for the user of the seating furniture. This allows the seating furniture to remain usable for several years, especially during growth phases of, for example, students, and also supports or enhances dynamic work in educational institutions. Furthermore, it is particularly advantageous that movement and posture-related damage can be specifically prevented. According to the invention, this is achieved by the seating furniture comprising 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, and wherein the first chair leg is configured to provide a change in the relative position between the first contact surface and the second contact surface, the relative position comprising at least a seat depth adjustment between the first contact surface and the second contact surface. 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. 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. This allows for seat height adjustment based on seat depth. Body height is essentially proportional to thigh length. Since taller individuals require a higher seating position, they also need a deeper seat, specifically a distance between the seat back and the front edge of the seat that corresponds to their thigh length. A similar principle applies to shorter individuals, but in reverse. In taller individuals, gravity could compress blood vessels on an inappropriately short front edge of the seat. Shorter individuals require a shorter seat, otherwise they cannot reach the backrest when their knees are bent. These situations can be improved using the first adjustment unit and by changing the relative positions. Preferably, the seat depth can be adjusted with just a few movements using the first adjustment unit. This eliminates the need for complex mechanisms. Furthermore, operation can be intuitive if the adjustment unit is adjustable via rotations. The dependent claims describe preferred embodiments of the invention. Preferably, the relative position includes at least a height adjustment between the first contact surface and the second contact surface. 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. Preferably, the seating furniture also has a second adjustment unit, whereby the second adjustment unit is located at a certain height. surface is connected to the second adjustment unit, wherein the first adjustment unit is displaceable along a first path on the first chair leg, wherein the second adjustment unit is displaceable 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 provided to provide the seat depth adjustment. An advantage of this embodiment is that, by selectively defining the displacements along