CN112118771A - Seating furniture support device - Google Patents

Abstract

A seated furniture support device (6) for a seat comprising: a first longitudinal beam (8) and a second longitudinal beam (12) each mountable to a seated furniture frame comprising one or more components; and a transverse tensile member (500) which can be installed between the first longitudinal beam (8) and the second longitudinal beam (12). The seat furniture support device further comprises an elastic sheet-like member (14) for providing support for the seat portion; Mechanism for pivoting to stretch the elastic sheet (14) between the first longitudinal beam (8) and the second longitudinal beam (12), wherein the longitudinal beam (8) is pivotable on the frame about the pivot axis , and the tension member ( 500 ) in the installed position locks the first longitudinal beam ( 8 ) in place in the final position with the elastic sheet member ( 14 ) stretched, thus will be used to stretch the elastic sheet The mechanism of the lever locks in place in the final position.

Description

Sitting furniture support

technical field

The present invention relates to a seated furniture support device for a seat or backrest.

Background technique

In the prior art, seated furniture supports for seats or backrests based on structures with longitudinal beams are known. Support can be provided, for example, by sheets stretched between longitudinal beams. Such furniture pieces can be designed to be assembled for future use by persons who are not specially trained for the task.

There is still a need for improvements in such seated furniture supports.

SUMMARY OF THE INVENTION

To this end, there is provided a sofa seat furniture support device for a seat or back, the sofa seat furniture support device comprising: a first longitudinal beam and a second longitudinal beam, the first longitudinal beam and the second longitudinal beam are mountable to a sitting furniture frame comprising one or more components; and a transverse tensile member mountable between the first longitudinal beam and the second longitudinal beam. The transverse tension members can be installed separately and can be separated from the frame. For example, the transverse tensile member may be installed between the midpoint of the first longitudinal beam and the midpoint of the second longitudinal beam.

The transverse tensile members provide additional structural strength to the sitting furniture support, while also providing a sitting furniture piece that is easy to assemble. Furthermore, the transverse tensile members allow sitting furniture pieces such as sofas with such support means to be made larger than would otherwise be possible, while still providing sufficient structural strength by the support means.

The sitting furniture support device may further include: an elastic sheet-like member for providing support for the seat portion; Mechanism for stretching an elastic sheet between a first longitudinal beam and a second longitudinal beam, wherein the longitudinal beam is pivotable on the frame about a pivot axis and the tensioning member in the installed position is pulled at the elastic sheet Lock the first longitudinal beam in place in the final position with the extension extended. With this arrangement, the transverse stretcher provides both structural support and is used to lock the mechanism for stretching the elastic sheet in place while the elastic sheet is stretched. This provides a simple mechanism with few parts that is still easy to operate.

With the seated furniture support in the installed position, the elastic sheet may be coupled to the first longitudinal beam in such a way that during the pivoting of the first longitudinal beam to stretch the elastic sheet, an external force or torque resists The tension of the elastic flaps acts until a point of maximum tension is reached, beyond which the tension facilitates further pivoting of the tensile member to hold the tensile member in place in the final position.

This arrangement results in a tensioning mechanism that is easy to handle during assembly, while still allowing a high degree of tension in the elastic sheet, resulting in good rigidity of the support. This in turn allows the device to be used in larger pieces of furniture than was previously possible.

Generally, a large degree of elasticity is not required in an elastic sheet, ie, the elastic modulus of the elastic sheet can be quite high, which is defined as the ratio of tension to stretch.

The transverse tension member has pins at each of its ends which, with the transverse tension member in the installed position, cooperate with the holes in the first longitudinal beam and the holes in the second longitudinal beam for installation of the transverse tension members stretch pieces.

The transverse stretcher may comprise two parts connected at a hinge, wherein the hinge is lockable to lock the transverse stretcher in the installed position.

The elastic sheet-like member may be a first elastic sheet-shaped member, and the sitting furniture support device may further comprise a third longitudinal beam and a second elastic sheet-shaped member for providing support for the backrest, wherein, The second elastic sheet is also connected to the first longitudinal beam such that pivoting of the first longitudinal beam also stretches the second elastic sheet between the first and third longitudinal beams.

The seated furniture support may be arranged such that an external force or torque acts against the tension of one of the first elastic sheet and the second elastic sheet up to the point of maximum tension, the first elastic sheet and the second elastic sheet The other of the flaps is only stretched if the pivot has passed the point of maximum tension. In this way, the tension of one of the sheets can be used to stretch the other sheet beyond the point of maximum tension, where both elastic sheets are stretched at the same time In contrast, less force or torque is required to pivot the tensile member up to this point of maximum tension.

Alternatively, the seated furniture support may be arranged such that an external force or torque acts against the tension of both the first and second elastic flaps up to the point of maximum tension. This allows a high final tension in both sheets.

With the sitting furniture support in the installed position, the elastic sheet can be folded around the first longitudinal beam to form a pocket, which is preferably closed by stitching. The device is easy to manufacture while also being durable.

The sitting furniture support device may further comprise a lever for applying an external force or torque to pivot the first longitudinal beam, wherein the lever is preferably removable or foldable after use. This makes it easy to operate the mechanism.

The sitting furniture support device may further comprise a stop against which the tension of the elastic sheet-like member acts through the first longitudinal beam to hold the first longitudinal beam in place in the final position.

The sitting furniture support may also include a latch further for locking the first longitudinal beam in place in the final position.

Furthermore, there is provided a sitting furniture piece comprising the above sitting furniture support, and a kit for assembling a sitting furniture piece comprising the above sitting furniture support.

According to another aspect, a method of assembling a sit-down furniture piece is provided, the method comprising: providing a sit-down furniture frame in one or more components, a first longitudinal beam each attached to the sit-down furniture frame, and A second longitudinal beam, and an elastic sheet for providing support for the seat or backrest; the elastic sheet is stretched between the first and second longitudinal beams by pivoting the first longitudinal beam relative to the frame the first longitudinal beam to the final position; and locking the first longitudinal beam in the final position by installing a transverse tension member between the first longitudinal beam and the second longitudinal beam.

Description of drawings

1A , 1B and 1C are perspective views of a sofa support device according to the prior art.

Figure 2A shows a perspective view, an enlarged cross-sectional view and an enlarged perspective view of a sofa with the support device according to the present inventive concept in an initial position.

Figure 2B shows a perspective view, an enlarged cross-sectional view, and an enlarged perspective view of the sofa, wherein the tensile member of the support device is pivoted into an intermediate position.

Figure 2C is an enlarged cross-sectional view wherein the tensile member of the support device is pivoted at a position corresponding to the point of maximum tension.

Figure 2D is a perspective view, an enlarged cross-sectional view, and an enlarged perspective view of the sofa with the tensile member of the support device in the final position, with the elastic flaps being stretched.

Figure 3 shows a perspective view of the sofa with the support in its final position, with the elastic flaps stretched, showing the seat and back bolsters added to complete the sofa.

4 is a cross-sectional view illustrating an alternative embodiment in which the tensile member is separated from the first longitudinal beam.

5A and 5B are perspective exploded views of the transverse stretching member.

Figure 6 is a perspective view of the assembled transverse stretcher.

Figures 7A and 7B are perspective views, and Figures 7C and 7D are cross-sectional views showing the sequence of installing the transverse tensile member between the two longitudinal beams of the sofa.

8A to 8C are perspective views showing the installation sequence of the sofa equipped with the lateral tension member.

Detailed ways

Figure 1 shows a device according to the prior art. The sofa 102 frame includes a first short end section 104a, a second short end section 104b, and a support 106 including a first longitudinal beam 108, a second longitudinal beam 110, and a third longitudinal beam 112, all of which are Extends between the first short end section 104a and the second short end section 104b. The first sheet 114 may be stretched between the first longitudinal beam 108 and the second longitudinal beam 110 and the second sheet 116 may be stretched between the first longitudinal beam 108 and the third longitudinal beam 112, The supports for the seat and the backrest, respectively, are thus formed. The seat and/or backrest may be formed by placing bolsters on the sheets 114 , 116 . In order to stretch the sheet, a stretching mechanism 118 is provided: the first longitudinal beam can be pulled manually and fixed by means of screws 120 .

Figures 2A to 2D illustrate a seated furniture support device 6 according to the present inventive concept. In this particular embodiment, the sitting furniture support device 6 is used for the sofa 2, however, the device is equally suitable for other sitting furniture pieces, such as armchairs.

Referring to FIG. 2A , the sofa 2 includes a frame including a first short end section 4 a , a second short end section 4 b and a support device 6 . The support device 6 includes a first longitudinal beam 8 , a second longitudinal beam 12 and a third longitudinal beam 10 .

The first longitudinal beam 8, the second longitudinal beam 12 and the third longitudinal beam 10 may be provided in a kit and mounted to the first and second short end sections 4a and 4b at the place of use of the sofa. As depicted in Figure 2A, the first longitudinal beam 8, the second longitudinal beam 12 and the third longitudinal beam 10 are each mounted between the first short end section 4a and the second short end section 4b. The first elastic sheet 14 is attached to the first longitudinal beam 8 and the second longitudinal beam 12 and the second elastic sheet 16 is attached to the first longitudinal beam 8 and the third longitudinal beam 10 .

The second longitudinal beam 12 and the third longitudinal beam 10 are fixed relative to the first short end section 4a and the second short end section 4b, while the first longitudinal beam 8 can be wound around the first short end section by means of the plate 20 The pivot axis extending between the first pivot point P on the segment 4a and the corresponding second pivot point on the second short end segment 4b is pivoted. A rod 18 suitable for assisting the pivoting of the first longitudinal beam 8 serving as a handle is fixed to the first longitudinal beam 8 at the midpoint between the first short end section 4a and the second short end section 4b of the frame. Other positions for the lever or handle and a different number of handles are also possible, or no handle at all if the external force or torque is provided by different means.

In embodiments where the tensile member is separate from the first longitudinal beam 8, as discussed below in connection with Figure 4, the handle 8 or rod will be located on the tensile member. Preferably, the handle is removable, eg by being able to be screwed onto the first longitudinal beam 8 . In this case, the rods 18 may be threaded to be screwed into corresponding threaded holes in the first longitudinal beam 8 to enable easy installation before use and easy removal after use. Alternatively, the rod 18 can be folded into or against the first longitudinal beam 8 after use.

Referring again to FIG. 2A , a cross-sectional view of the area near the first pivot point P shows the longitudinal beam 8 , the rod 18 , the first flap 14 and the second flap 16 . The flaps 14 , 16 are attached to the first longitudinal beam 8 at attachment points 26 that are rotatable relative to the longitudinal beam 8 .

In this embodiment, the elastic sheet is folded around the first longitudinal beam 8 to form a pocket which is closed at the attachment point 26 by a seam. The elastic flaps in the form of pockets are rotatable relative to the first longitudinal beam 8 . In this configuration, the first elastic sheet 14 and the second elastic sheet 16 may be part of the same elastic sheet.

The vertical or nearly vertical plate 20 is fixed relative to the first longitudinal beam 8 near the first short end section 4a of the frame. The plate has a slot 22 configured to interact with a stop in the form of a pin 24 on the first short end section of the frame. The same plate 20 configured to interact with the same tap (not visible) in the second short end section 4b is positioned adjacent to the second short end section 4b of the frame. The plate 20, and thus the first longitudinal beam 8, can pivot about a first pivot point P and a second pivot point (not visible), respectively.

The first longitudinal beam 8, the rod 18 and the plate 20 provide for stretching the first elastic sheet 14 between the first longitudinal beam 8 and the second longitudinal beam 12 during assembly of the sofa and also for the first A mechanism for stretching the second elastic sheet 16 between the longitudinal beams 8 and the third longitudinal beam 10, wherein the first longitudinal beam 8 serves as a tensile member for the elastic sheet, as will be described below.

In the sectional view of FIG. 2A , the arc L1 shows the path traveled by the slot 22 of the plate 20 when the first longitudinal beam 8 is pivoted about the pivot point P. Similarly, the second circular arc L2 shows the path traveled by the center of the first longitudinal beam 8 during this same pivoting movement. Thus, with the sofa seat furniture support 6 in the installed position, the first elastic sheet 14 stretches the first elastic sheet such that the first longitudinal beam 8 pivots relative to the frame in response to the application of an external force or torque The like member 14 is connected to the tensile member, which in this embodiment is the same as the first longitudinal beam 8 . Figure 2B shows the same arrangement as in Figure 2A during the pivoting of the first longitudinal beam 8, the pivoting movement being driven by the application of an external force on the rod 18, as indicated by the large straight arrow. During the pivoting indicated by the small curved arrow, the distance between the attachment point 26 and the second longitudinal beam 12 will increase, thereby starting to stretch the first elastic flap 14 . The tension of the first elastic flap 14, shown by the large straight arrow near the first elastic flap 14 in the cross-sectional view, will counteract the pivotal movement as the first elastic flap 14 pivots relative to the The leverage of point P is the opposite of the leverage of an externally applied force. Therefore, the external force applied to the rod 18 will need to act against the tension of the first elastic sheet 14 . Since the attachment point 26 can rotate relative to the first longitudinal beam 8, the tension of the first elastic sheet 14 will move the attachment point 26 about the first longitudinal beam 8 so that the stretched first elastic sheet 14 is vertical on the surface of the first longitudinal beam 8 . The path followed by the attachment point 26 during this pivot phase will be determined by this condition.

In an alternative embodiment (not shown), the attachment point 26 may instead be fixed relative to the first longitudinal beam 8 and the plate 20, ie to the tensile member. In this case, the attachment point 26 would follow a circular path similar to L1 or L2 during pivoting.

In the embodiment shown, the first longitudinal beam 8 has a circular cross-section. However, other alternatives are also possible, such as rectangular or oval cross-sections. The longitudinal beam 8 may be fixed relative to the plate 20 such that the attachment points 26 are fixed relative to the plate 20, or the longitudinal beam 8 may be pivoted at the plate 20 at a point offset from the first pivot point P and the second pivot point .

As the pivoting movement continues, the external force applied to the lever 18 will continue to act against the tension of the first elastic flap 14, wherein the length of the moment arm relative to the tension at the pivot point P decreases and the tension increases , until the point of maximum tension, the position, is reached, as shown in the cross-sectional view in Figure 2C. Here, with the first elastic flap 14 intersecting the pivot point P, the moment arm of the tension of the first elastic flap 14 has been reduced to zero, thereby applying no torque relative to the pivot point P .

With further pivoting movement driven by an externally applied force on lever 18, the moment arm of the tension of first elastic flap 14 will produce a position about pivot point P and the position before the pivoting movement reaches maximum tension A torque of opposite sign, thereby causing a torque acting in the same direction as the externally applied force on the rod 18 . Thus, the tension of the first elastic flap 14 will facilitate the pivoting from now on until the slot 22 of the plate 20 has reached the stop in the form of a pin 21, as shown in Fig. 2D.

Thus, the torque provided by the external force on the rod 18 acts against the torque provided by the tension of the first elastic flap 14 until a position of maximum tension is reached, beyond which the position of maximum tension is reached, as depicted in Figure 2C , the tension of the first elastic flap 14 instead facilitates further pivoting of the first longitudinal beam 8, thereby serving to hold the tensile member in place in its final position, as depicted in Figure 2D.

With the leverage available, the mechanism is easy to operate, even with high tensions in the elastic flaps, providing good rigidity to the support.

The elastic flaps 14, 16 need to be sufficiently elastic to be able to be brought to the position of maximum tension. Generally, however, a large degree of elasticity is not required in the elastic sheet, ie the elastic modulus of the elastic sheet, which is defined as the ratio of tension to stretch, can be quite high. For a given geometry of the tensile member, a higher modulus of elasticity allows for a high degree of tension in the sheet, thereby imparting rigid support to the seat and backrest.

Optionally, a latch (not shown) may be provided to prevent the first longitudinal beam 8 from sliding back from the final position, eg due to an externally applied force.

In the embodiment shown in FIGS. 2A to 2D , the distance between the second elastic flap 16 and the attachment point 26 and the third longitudinal beam 10 is set such that the second elastic flap moves in the pivoting motion until the first An elastic flap 14 remains relaxed during the point of maximum tension (FIG. 2C) and is only stretched after the point of maximum tension. Therefore, in this embodiment, during pivoting, the external force acts against the tension of the first elastic flap up to the position of maximum tension, wherein the second elastic flap is only in the position where the pivot has exceeded the maximum tension being stretched. In this way, the tension of one of the first elastic sheets 14 helps to stretch the second elastic sheet 16 beyond the point of maximum tension, where less external force is required to cause the stretch. The member pivots up to this point of maximum tension. With both the first elastic flap 14 and the second elastic flap 16 stretched, the location of the attachment point 26 capable of rotating about the first longitudinal beam 8 will be determined by the tension of the first elastic flap 14 It is determined by the condition that the vector sum of the tension force of the second elastic sheet-like member 16 is perpendicular to the surface of the first elastic beam 8 .

In an alternative embodiment (not shown), both the first elastic sheet 14 and the second elastic sheet 16 are stretched simultaneously to a position of maximum tension. In this case, the location of maximum tension would be defined based on the vector sum of the tension of the first elastic sheet 14 and the tension of the second elastic sheet 16 . As another alternative, there may be only one elastic sheet that provides support for the seat or backrest.

Figure 4 shows an alternative embodiment in a cross-sectional view, wherein the first longitudinal beam 8 is separated from the mechanism 28 for stretching the first elastic sheet 14 and the first longitudinal beam 8 is fixed to the frame. As in the embodiment described above in connection with FIGS. 2A to 2D , the elastic flaps 14 extend between the second longitudinal beam (not shown) and the first longitudinal beam 8 . However, the elastic flaps 14 are not fixed at the first longitudinal beam, but are now still fixed to a separate tensioning mechanism 28 . In the depicted embodiment, the first elastic flap 14 is located on top of the first longitudinal beam 8 . However, other arrangements are equally possible, such as the first elastic flap 14 extending through a slot or opening in the first longitudinal beam. The stretching mechanism 28 operates according to the same principles as described above in connection with Figures 2A-2D. In the depicted embodiment, the first elastic flap 14 is attached to a column-like structure similar to the first longitudinal beam depicted in Figures 2A-2D, however, the structure for the elastic flap 14 to be secured in This embodiment may be smaller since the structure does not carry the load of an occupant such as a sofa. In this embodiment, all other structures may be the same as those described above in connection with FIGS. 2A-2D.

Finally, Figure 3 shows the sofa 2 in which the first elastic sheet 14 and the second elastic sheet 16 have been stretched according to the steps described above. Where the stretched first elastic sheet 14 is providing support for the sofa seat, as indicated by the arrows, bolsters 54 may be added to complete the sofa seat. Likewise, where the second elastic sheet 16 is providing support for the backrest of the sofa, a bolster 52 may be added to complete the backrest.

Figures 5A and 5B are exploded views of the transversely extending stretcher 500 shown from two different angles. Tensile member 500 includes a front portion 502 and a rear portion 504, each of which has a quadratic cross-section. Front portion 502 and rear portion 504 are connected at hinge 520 . As described below, the transverse tension member 500 will be installed between the first longitudinal beam 8 and the second longitudinal beam 12 of the sofa.

The front part 502 has a protrusion 506 at the front end of the front part 502 which is designed to cooperate with a corresponding hole 704 in the second longitudinal beam 12 (cf. Figures 7A and 7B). The protrusion 506 is surrounded by a flange 507 having a shape matching the shape of the second longitudinal beam 12 .

Similarly, the rear portion 504 has a protrusion 508 at the rear end of the rear portion 504 designed to mate with a corresponding hole 702 in the first longitudinal beam 8 (see FIGS. 7A and 7B ). The protrusion 508 is surrounded by a flange 509 having a shape matching the shape of the first longitudinal beam 8 .

For hinge 520, front portion 502 has a protrusion 522 at the rear end of front portion 502 that extends through hole 514 in cap 518 having a U-shaped cross-section. Bolts 510 can be used to lock the hinge. Before the application and tightening of the bolt 510, the front part 502 and the rear part 504 are free to pivot relative to each other by means of the hinge 520, which is limited by the fact that the surface 516 of the front part 502 is aligned with the U-shape of the cap 518 The lower part of the "U" of the profile is stopped by the corresponding inner surface.

The hinge 520 can be locked by inserting and tightening the bolt 510 from the side of the rear portion 504, wherein the bolt 510 extends through the hole 511 in the cap 518, through the inner surface of the cap 518 and into the surface of the front portion 502 516 , thereby locking the hinge 520 and surface 516 of the front portion 502 against the inner surface of the cap 518 of the rear portion 504 . Figure 6 shows the transverse tensile member 500 so assembled and locked. The stretcher 500 has a slightly curved shape, forming a smooth arc that extends in a downward direction with respect to the sofa 2 when the stretcher is in the installed position (refer to FIGS. 8A to 8C ) .

FIGS. 7A and 7B are perspective views, and FIGS. 7C and 7D are cross-sectional views showing the sequence of installing the transverse tension member 500 between the first longitudinal beam 8 and the second longitudinal beam 12 of the sofa 2 (refer to 8A to 8C). The transverse tension member 500 can be mounted on a piece of furniture with a pivotable first longitudinal beam 8 as will be described below in connection with the sofa 2 of FIGS. 8A to 8C , or on a A piece of furniture such as a sofa with the arrangement described in connection with FIG. 4 .

First, referring to FIG. 7A , and in particular in the enlarged region of this figure, the protrusions 508 of the rear portion 504 of the transverse tensile member 500 are introduced into the corresponding holes 702 of the first longitudinal beam 8 . The bolts 510 have been inserted but not tightened so that there is play in the hinge 520 .

Then, referring to FIG. 7B , the protrusions 506 of the front portion 502 may be introduced into the vicinity of or in conjunction with the corresponding holes 704 of the second longitudinal beam 12 by twisting the transverse tension member 500 as indicated by the double arrows touch. The resulting configuration is shown in cross section in Figure 7C. As can be seen, the fact that the bolts 510 have not been tightened creates play that allows the transverse tension member 500 to be inserted as just described.

Now, referring to Figure 7D, tightening the bolts 510 as indicated by the circular arrows will cause the front portion 502 and the rear portion 504 of the transverse tension member 500 to move as indicated by the straight arrows, while the protrusions 506, 508 is pushed into its corresponding longitudinal beams 8 , 12 and flanges 507 , 509 are pushed against their corresponding longitudinal beams 8 , 12 . The transverse tension member 500 is now locked in place in the installed position.

FIGS. 8A to 8C are perspective views showing the installation sequence of the sofa 2 equipped with the support device 6 including the transverse tension member 500 . The sofa is similar to the sofa discussed above in connection with Figures 2A to 2D, and all the features and alternatives discussed there apply to the sofa 2, except for the differences discussed below.

8A, the sofa 2 includes a frame and a seat support device 6, wherein the frame includes a first short end section 4a and a second short end section 4b, the seat support device 6 includes a first longitudinal beam 8, a second longitudinal beam Beam 12 and third longitudinal beam 10 . The first elastic sheet 14 can be stretched between the first longitudinal beam 8 and the second longitudinal beam 12 to form support for the seat of the sofa, and the second elastic sheet 16 can optionally be in the first longitudinal direction There is tension between the beam 8 and the third longitudinal beam 10 . According to the same principle described in connection with FIGS. 2A to 2D , the first longitudinal beam 8 can be pivoted at the first short end section 4a and the second short end section 4b , forming a pivot axis for stretching the first The elastic sheet 6 and optionally the second elastic sheet 16 is stretched.

Referring to FIG. 8B , the user may apply an external force or torque on the rod 18 during assembly of the sofa 2 in order to stretch the first elastic sheet 14 and optionally the second elastic sheet 16 . Unlike what was described in connection with FIGS. 2A to 2D , the stretching occurs when the first longitudinal beam 8 is pivoted in the opposite direction of stretching to that described in connection with FIGS. 2A to 2D , wherein When the front side of the first longitudinal beam 8 moves downwards and the rear side moves upwards with respect to the sofa. This allows the transverse tensile member 500 (refer to FIG. 8C ) to act on the first longitudinal beam 8 in the tensile direction. The stretch direction is indicated by a circular arrow. The stretching of the first elastic sheet 14 is indicated by two straight arrows. The first longitudinal beam 8 has at each of the ends of the first longitudinal beam 8 a vertical plate 20 which finally reaches a stop 24 . After stretching, the rod 18 can be removed by the user.

Finally, referring to Fig. 8C, the transverse tension member 500 may be installed as described above in connection with Figs. 7A-7D. With the hole 702 (see FIG. 7A ) positioned offset from the pivot axis of the first longitudinal beam 8 , the transverse stretcher 500 acts on the first longitudinal beam 8 in the stretching direction, thereby pulling the first longitudinal beam 8 8 Locks in place in its final position.

The inventive concept has mainly been described above with reference to some embodiments. However, other embodiments than those disclosed above are equally possible within the scope of the inventive concept defined by the appended patent claims, as readily understood by a person skilled in the art.

Examples are summarized below:

Provided is an improved sofa seat furniture support device for a seat or back, the sofa seat furniture support device comprising: a first longitudinal beam and a second longitudinal beam, the first longitudinal beam and the second longitudinal beam are both capable of Mounted to a sitting furniture frame comprising one or more components; a resilient sheet for providing support for one of the seat and the backrest; and for providing support between the first longitudinal beam and the second A mechanism for stretching elastic sheets between longitudinal beams. The mechanism includes a tensile member capable of pivoting on the frame. With the sofa sit furniture support in the installed position, the elastic flap is connected to the tensile member in such a way that the tensile member pivots relative to the frame in response to the application of an external force or torque to stretch the elastic flap , wherein the external force or torque acts against the tension of the elastic sheet until a point of maximum tension is reached, beyond which the tension facilitates further pivoting of the tension member, thereby serving to hold the tension member in the final The position remains in place.

This arrangement results in a tensioning mechanism that is easy to handle during assembly, while still allowing a high degree of tension in the elastic sheet, resulting in good rigidity of the support. This in turn allows the device to be used in potentially larger pieces of furniture than before.

Generally, a large degree of elasticity is not required in an elastic sheet, ie, the elastic modulus of the elastic sheet can be quite high, which is defined as the ratio of tension to stretch.

The tensile member may be the first longitudinal beam itself. This allows for a simple but robust configuration that is still easy to handle.

The elastic sheet-like member may be a first elastic sheet-like member, and the sitting furniture support device may further comprise a third longitudinal beam and a second elastic sheet-like member for providing the seat and backrest. The other provides support, wherein the second elastic sheet is also connected to the tensile member of the mechanism, such that the pivoting of the tensile member also stretches the second elastic sheet between the first and third beams.

The seated furniture support may be arranged such that an external force or torque acts against the tension of one of the first elastic sheet and the second elastic sheet up to the point of maximum tension, the first elastic sheet and the second elastic sheet The other of the flaps is only stretched if the pivot has passed the point of maximum tension. In this way, the tension of one of the sheets can be used to stretch the other sheet beyond the point of maximum tension, where as in the case where both elastic sheets are stretched at the same time In comparison, less force or torque is required to pivot the tensile member up to this point of maximum tension.

Alternatively, the seated furniture support may be arranged such that an external force or torque acts against the tension of both the first and second elastic flaps up to the point of maximum tension. This allows a high final tension in both sheets.

With the sitting furniture support in the installed position, the elastic sheet may be folded around the tensile member to form a pocket, which is preferably closed by stitching. The device is easy to manufacture while also being durable.

The seated furniture support may also include a lever for applying an external force or torque to pivot the tensile member, wherein the lever is preferably removable or foldable after use. This makes it easy to operate the mechanism.

The seated furniture support device may further comprise a stop against which the tension of the elastic flap acts through the tension member to lock the tension member in place in the final position.

The sitting furniture support may also include a latch further for locking the tensile member in place in the final position.

Furthermore, there is provided a sitting furniture piece comprising the above sitting furniture support, and a kit for assembling a sitting furniture piece comprising the above supporting means.

According to other aspects, there is provided a method of assembling a sit furniture piece, the method comprising: providing a sit furniture frame in one or more parts, a first longitudinal beam and a first longitudinal beam each attached to the sit furniture frame two longitudinal beams, and an elastic sheet-like member for providing support for the seat or the backrest; and stretching the elastic sheet-like member between the first longitudinal beam and the second longitudinal beam, wherein the stretching of the elastic sheet-like member includes Applying an external force or torque to pivot the tensile member relative to the frame, wherein the elastic flap is connected to the tensile member in a manner such that the pivoting stretches the elastic flap against the external force or torque The tension is applied until a point of maximum tension is reached, beyond which the tension promotes further pivoting of the tensile member to lock the tensile member in place in the final position.

The following is an example of what is summarized above:

1. A seated furniture support device (6) for a seat or back, the seated furniture support device (6) comprising:

A first longitudinal beam (8) and a second longitudinal beam (12), each of which is mountable to a sitting furniture comprising one or more components frame;

elastic flaps (16; 14) for providing support for one of the seat and the backrest; and

a mechanism for stretching said elastic sheet between said first longitudinal beam (8) and said second longitudinal beam (10; 12),

It is characterized in that, the mechanism includes:

a tensile member (8; 28) capable of pivoting on said frame,

With the seated furniture support (6) in the mounted position, the elastic flaps (16; 14) are in such a way that the pulls pivot relative to the frame in response to the application of an external force or torque A stretching member (8; 28) is connected to the stretching member (8; 28) in such a way that it stretches the elastic sheet (16; 14) against which the elastic sheet (16; 16;) is resisted by the external force or torque. 14) until the point of maximum tension is reached, beyond which the tension facilitates further pivoting of the tension member (8; 28), thereby serving to stretch the tension The member (8; 28) remains in place in the final position.

2. Sitting furniture support device (6) according to the previous example, wherein the tensile member is the first longitudinal beam (8).

3. Sitting furniture support device (6) according to any one of the preceding examples, wherein the elastic sheet (16; 14) is a first elastic sheet (14), and the seat Type furniture support device also includes:

a third longitudinal beam (10); and

a second elastic sheet (16) for providing support for the other of the seat and the backrest,

The second elastic flap (16) is also connected to the tensile member of the mechanism, so that the pivoting of the tensile member is also connected to the first beam (8) and the third The second elastic sheet-like member (16) is stretched between the longitudinal beams (10).

4. The seated furniture support device (6) according to example 3, wherein the external force or torque resists the first elastic sheet-like element (16; 14) and the second elastic sheet-like element (14; 16) until the point of the maximum tension, the other of the first elastic sheet and the second elastic sheet is only after the pivot has exceeded the The point of maximum tension is stretched.

5. The sitting furniture support device (6) according to example 3, wherein the external force or torque resists the first elastic sheet-like element (16; 14) and the second elastic sheet-like element (14; 16) The tension between the two acts until the point of the maximum tension.

6. A seated furniture support (6) according to any of the preceding examples, wherein the resilient flap (16) is in the installed position with the seated furniture support (6) ; 14) Folding around the tensile member to form a bag, preferably closed by a suture (26).

7. A seated furniture support device according to any of the preceding examples, further comprising a lever (18) for applying the external force or torque to pivot the tensile member (8; 28), whereby The rod is preferably removable or foldable after use.

8. A seated furniture support (6) according to any of the preceding examples, further comprising a stop (24), the tension of the elastic sheet (16; 14) by the tension The tensile member (8; 28) acts against the stop (24) to lock the tensile member (8; 28) in place in the final position.

9. Sitting furniture support device (6) according to any of the preceding examples, further comprising a latch for locking the tensile member (8; 28) in place in the final position.

10. A seated furniture piece (2) comprising a seated furniture support device (6) according to any one of the preceding examples.

11. A kit for assembling a seated piece of furniture, the kit comprising a support device (6) according to any of the examples 1 to 9.

12. A seated furniture support device (6) for a seat, comprising:

A first longitudinal beam (8) and a second longitudinal beam (12), each of which is mountable to a sitting furniture comprising one or more components framework; and

A transverse tension member (500) can be installed between the first longitudinal beam (8) and the second longitudinal beam (12).

13. The seated furniture support device (6) according to example 12, further comprising:

elastic flaps (14) for providing support for the seat; and

For connecting the first longitudinal beam (8) and the second longitudinal beam with respect to the frame in the tensile direction by the pivoting of the first longitudinal beam (8) in response to the application of an external force or torque (12) Mechanism for stretching the elastic sheet (14) between, wherein the longitudinal beam (8) is pivotable on the frame about a pivot axis, and the stretch in the mounted position A member (500) locks the first longitudinal beam (8) in place in the final position with the elastic sheet member (14) being stretched.

Claims (15)

1. A seating furniture support device (6) for a seat, comprising:

-a first longitudinal beam (8) and a second longitudinal beam (12), the first longitudinal beam (8) and the second longitudinal beam (12) each being mountable to a frame of a seating furniture comprising one or more components;

a transverse tension member (500), the transverse tension member (500) being mountable between the first longitudinal beam (8) and the second longitudinal beam (12);

an elastic sheet member (14), the elastic sheet member (14) being for providing support to the seat; and

-means for stretching the elastic sheet (14) between the first longitudinal beam (8) and the second longitudinal beam (12) in response to a pivoting of the first longitudinal beam (8) in a stretching direction relative to the frame in response to an application of an external force or torque, wherein the longitudinal beams (8) are pivotable on the frame about a pivot axis and the transverse stretching member (500) in mounted position locks the first longitudinal beam (8) and whereby the means for stretching the elastic sheet is in place in a final position with respect to the pivoting with the elastic sheet (14) stretched.

2. The seating furniture support device (6) according to claim 1, wherein the transverse tension member (500) in the mounted position locks the first longitudinal beam (8) in position in the final position by pushing the first longitudinal beam (8) in the tension direction at a point offset with respect to the pivot axis.

3. The seating furniture support device (6) according to claim 1 or claim 2, wherein the resilient sheet (14) is connected to the first longitudinal beam (8) with the seating furniture support device (6) in the mounted position in the following manner: during said pivoting of the first longitudinal beam (8) to stretch the elastic sheet (14), the external force or torque acts against the tension of the elastic sheet (14) until a point of maximum tension is reached beyond which the tension facilitates further pivoting of the stretching member (8) to thereby act to hold the stretching member (8) in place in the final position.

4. The seating furniture support device (6) according to any one of the preceding claims, wherein the transverse tension member (500) has a pin at each end which cooperates with holes (702, 704) located on the first and second longitudinal beams (8, 12) when the transverse tension member (500) is in the mounting position, to mount the transverse tension member.

5. The seating furniture support device (6) of any one of the preceding claims, the transverse tension member (500) comprising two parts (502, 504) connected at a hinge (520), the hinge (520) being lockable to lock the transverse tension member (500) in an installation position.

6. The seating furniture support device (6) according to any one of the preceding claims, wherein the elastic sheet (16; 14) is a first elastic sheet (14) and further comprising:

a third longitudinal beam (10); and

a second resilient sheet (16), the second resilient sheet (16) being for providing support for a backrest, the second resilient sheet (16) also being connected to the first longitudinal beam (8) such that the pivoting of the first longitudinal beam (8) also stretches the second resilient sheet (16) between the first longitudinal beam (8) and the third longitudinal beam (10).

7. The seating furniture support device (6) according to claim 6, wherein the external force or torque acts against the tension of one of the first and second elastic sheets (16; 14; 16) up to the point of maximum tension, the other of the first and second elastic sheets being stretched only if the pivoting has exceeded the point of maximum tension.

8. The seating furniture support device (6) according to claim 6, wherein the external force or torque acts against the tension of both the first and second elastic sheet (16; 14; 16) up to the point of maximum tension.

9. The seating furniture support device (6) according to any one of claims 1 to 8, wherein with the seating furniture support device (6) in the mounted position, the elastic sheet (16; 14) is folded around the first longitudinal beam (8) to form a pocket, preferably closed by a stitch (26).

10. The seating furniture support device (6) according to any one of claims 1 to 9, further comprising a lever (18) for applying the external force or torque to pivot the first longitudinal beam (8), the lever preferably being removable or foldable after use.

11. The seating furniture support device (6) according to any of claims 3 to 10, further comprising a stop (24), the tension of the resilient sheet (14) acting against the stop (24) by the first longitudinal beam (8) to hold the first longitudinal beam (8) in place in the final position.

12. The seating furniture support device (6) according to any of claims 1 to 11, further comprising a latch for further locking the first longitudinal beam (8) in place in the final position.

13. Piece of sitting furniture (2), the piece of sitting furniture (2) comprising a sitting furniture support device (6) according to any one of the preceding claims.

14. A kit for assembling a piece of seating furniture, comprising a seating furniture support device (6) according to any one of claims 1 to 14.

15. A method of assembling a piece of seating furniture, the method comprising:

providing:

a frame of a piece of seating furniture in the form of one or more parts (4a, 4 b);

a first longitudinal beam (8) and a second longitudinal beam (12) both attached to the frame of the seating furniture; and

a resilient sheet member (14) for providing support to the seat or back;

-stretching the elastic sheet (14) between the first longitudinal beam (8) and the second longitudinal beam (12) by pivoting the first longitudinal beam (8) with respect to the frame, thereby bringing the first longitudinal beam (8) to a final position with respect to the pivoting; and

locking the first longitudinal beam (8) in the final position by mounting a transverse tension member (500) between the first longitudinal beam (8) and the second longitudinal beam (12).

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