Search

EP-4523570-B1 - BASE FRAME FOR A SEAT

EP4523570B1EP 4523570 B1EP4523570 B1EP 4523570B1EP-4523570-B1

Inventors

  • HESSE, DETLEF

Dates

Publication Date
20260513
Application Date
20240916

Claims (9)

  1. Base frame (2) for a piece of seating furniture (4) having at least two seats (6, 8; 6, 8, 9), comprising two side parts (10, 12) for setting up the base frame (2) on a set-up area (14), wherein, in a mounted state of the base frame (2), the two side parts (10, 12) are connected to one another in a force-transmitting manner by means of a crossmember (16) of the base frame (2) and the crossmember (16) is formed for fastening at least two seats (18, 20) arranged directly next to one another along the crossmember (16) for forming the at least two seats (6, 8; 6, 8, 9) of the piece of seating furniture (4), and wherein, for each seat (18, 20), the crossmember (16) has a crossmember segment (22, 24; 22, 24, 25) for forming the crossmember (16) in the mounted state of the base frame (2), and, in the mounted state of the base frame (2), crossmember segments (22, 24; 22, 24 and 24, 25) arranged directly next to one another are detachably connected to one another, specifically in such a way that the crossmember segments (22, 24; 22, 24 and 24, 25) arranged directly next to one another in the mounted position of the base frame (2) are connected to one another in a force-transmitting manner by means of screw connections (36), wherein the crossmember segments (22, 24; 22, 24, 25) are each formed as a rectangular supporting frame and the supporting frames each have a hollow front rail (26) and a hollow rear rail (32) connected to the front rail (26) in a force-transmitting manner by means of two lateral connecting plates (28, 30), and wherein the connecting plates (28, 30), which are arranged directly next to one another, of these crossmember segments (22, 24; 22, 24 and 24, 25) are connected to one another in a force-transmitting manner by means of screw connections (36), characterized in that the respective screw connection (36) is arranged in an embossment or bead of the respective connecting plate (28, 30), which embossment or bead is projecting in the direction of the directly adjacent connecting plate (28, 30).
  2. Base frame (2) according to claim 1, characterized in that the crossmember segments (22, 24; 22, 24, 25) are each formed as identical parts.
  3. Base frame (2) according to claim 1 or 2, characterized in that the front rail (26) and the rear rail (32) are each at least 1.5 times as long as one of the connecting plates (28, 30).
  4. Base frame (2) according to any of claims 1 to 3, characterized in that the connecting plates (28, 30) each have a stiffener (34) for stiffening the respective connecting plate (28, 30), preferably in that the stiffener (34) is formed as a stiffener shaped from the respective connecting plate (28, 30), particularly preferably in that the stiffener (34) is formed as an embossment or bead of the connecting plate (28, 30), which embossment or bead is shaped outwards in the mounted state of the base frame (2).
  5. Base frame (2) according to any of claims 1 to 4, characterized in that the supporting frame (22, 24; 22, 24, 25) is formed from individual parts welded to one another, preferably in that the supporting frame (22, 24; 22, 24, 25) is formed from a total of four individual parts welded to one another.
  6. Base frame (2) according to claim 4 or 5, characterized in that the aforementioned embossment or bead for arranging the respective screw connection is formed as part of the stiffener (34) of the respective connecting plate (28, 30).
  7. Base frame (2) according to any of claims 1 to 6, characterized in that the rear rails (32), which are arranged directly next to one another, of the crossmember segments (22, 24; 24, 25) are connected to one another in a force-transmitting manner by means of screw connections (38), preferably in that these rear rails (32) are screwed to one another by means of a screw plate (40) overlapping these two rear rails (32).
  8. Base frame (2) according to any of claims 1 to 7, characterized in that the base frame (2) in its mounted state has at least one additional supporting foot (42) arranged between the two side parts (10, 12) for supporting the base frame (2) on the set-up area (14), preferably in that a length of the supporting foot (42) is adjustable, particularly preferably in that the crossmember segments (22, 24; 22, 24, 25) each have a fastening element (44) for fastening the supporting foot (42) to one of these crossmember segments (22, 24, 25).
  9. Base frame (2) according to any of claims 1 to 8, characterized in that the two side parts (10, 12) are each formed merely as a set-up foot, preferably in that an armrest of the seating furniture (4) is detachably fastened to the respective set-up foot, or in that the two side parts (10, 12) are each formed at the same time as an armrest of the seating furniture (4).

Description

The invention relates to a base frame for a piece of seating furniture with at least two seats, comprising two side parts for setting up the base frame on a base surface, wherein the two side parts are connected to each other in a force-transmitting manner in an assembly state of the base frame by means of a crossbeam of the base frame and the crossbeam is designed for attaching at least two seats arranged directly next to each other along the crossbeam to form the at least two seats of the piece of seating furniture. The crossbeam has one crossbeam segment per seat for forming the crossbeam in the assembled state of the base frame, wherein, in the assembled state of the base frame, crossbeam segments arranged directly next to each other are detachably connected to one another, namely in such a way that the crossbeam segments arranged directly next to each other in the assembly position of the base frame are connected to each other by means of screw connections in a force-transmitting manner, wherein the crossbeam segments are each designed as a rectangular support frame and the support frames each have a hollow front rail and a hollow rear rail connected to the front rail by means of two lateral connecting plates in a force-transmitting manner, and wherein the connecting plates of these traverse segments, arranged directly next to each other, are connected to each other by means of screw connections in a force-transmitting manner. Due to the design of the base frame, it is possible to deliver it to the end customer disassembled and then assemble it on-site in their home. This offers the significant advantage that the disassembled base frame can be easily transported through narrow corridors and/or up narrow stairwells, for example, in apartment buildings. Furthermore, any existing elevators can be used more effectively, or even made available at all, for transporting the base frame. Finally, handling the base frame is easier due to the lighter weight of the individual parts compared to the fully assembled frame. Overall, transporting the base frame is simple and therefore cost-effective. Such basic frames for seating furniture are already known in a variety of embodiments from the prior art. However, these basic frames have several disadvantages. The invention provides a remedy for these disadvantages. For example, they referred to the following printed materials: WO 2023 046 454 A1 , DE 203 19 481 U1 , DE 19 73 069 U and DE 31 13 863 A1 . The object of the present invention is to improve a basic frame for a piece of seating furniture. To solve this problem, the invention, in conjunction with the preamble of claim 1, is characterized in that the respective screw connection is arranged in a recess or groove of the respective connecting plate that projects in the direction of the directly adjacent connecting plate. The terms "crossbeam" and "crossbeam segments" are used broadly within the scope of the invention. Accordingly, a multitude of conceivable and, for the respective individual case, sensible design and manufacturing embodiments are summarized under these terms. The particular advantage of the invention is that a basic frame for a piece of seating furniture is improved. In principle, the basic frame according to the invention can be freely selected within wide suitable limits with regard to type, function, material, and dimensions. Accordingly, a large number of different seating furniture pieces can be manufactured using the basic frame according to the invention, so that the basic frame according to the invention can be used as a basis for a wide range of requirements for seating furniture. The term "seating furniture" is to be interpreted broadly according to the invention and includes, for example, furniture that is designed for both sitting and lying down, or solely for lying down. A particularly advantageous embodiment of the basic frame according to the invention provides that the crossbeam segments are each designed as identical parts. In this way, the structural design of the basic frame according to the invention for seating furniture is further simplified and standardized, thus significantly facilitating warehousing, manufacturing, transport, and on-site assembly. This standardization of the crossbeam segments for forming the crossbeam of the basic frame according to the invention also allows for higher production volumes, making the overall manufacture of the basic frame according to the invention more cost-effective. A further advantageous embodiment of the basic frame according to the invention provides that the front and rear rails are each 1.5 to 3 times as long as one of the connecting plates. This allows the crossbeam segments to be manufactured in a very robust and therefore load-bearing manner, while simultaneously requiring less material. Accordingly, the manufacturing costs and weight of the basic frame according to the invention are reduced. This embodiment also has the furthe