FURNITURE

Description

[0001] The invention relates to a piece of furniture according to the preamble of claim 1.

[0002] Adjustable furniture in the form of armchairs is known in which the inclination of the backrest is achieved by a shift in the weight of the person sitting on the furniture. A sliding guide is provided on the furniture frame for the seat, designed in the form of rollers arranged laterally next to the seat. These rollers are movable along a frame member of the frame when the backrest is adjusted. The laterally visible rollers and associated guides are perceived as bothersome by the user. Furthermore, a large installation space is required for the joint connection between the seat and backrest. Adjustable armchairs are known in the prior art, for example, from CN204561485U and WO93 / 00842A1.

[0003] The invention is based on the objective of designing the generic piece of furniture in such a way that the joint connection between the seat part and the back part takes up little space and is not visible from the outside.

[0004] This problem is solved according to the invention in the generic furniture by the characterizing features of claim 1.

[0005] In the furniture according to the invention, the seat is articulated to the frame via the connecting element. This makes it possible to design the joint between the seat and the backrest in a compact manner. In particular, the connecting element can be positioned on the furniture in such a way that it is not visible from the outside. The connecting element forms a control element that ensures that when the backrest is tilted, the seat is also moved. This ensures that the backrest and the seat assume a favorable relative position to each other in every tilted position of the backrest.

[0006] According to the invention, the pivot axis of the connecting part on the frame side is provided at a distance from the first axis, via which the articulated connection of the backrest to the frame is made. This pivoting of the connecting part on the frame contributes to the compact design of the articulated connection between the backrest and the seat.

[0007] A structurally simple and compact design results from the fact that the backrest has at least one connecting piece that projects beyond the first axis towards the seat and on which the second axis is located. Because of this connecting piece, the backrest can be considered a two-armed lever, with the connecting piece forming a short lever arm that is significantly shorter than the other lever arm, which comprises almost the entire length of the backrest.

[0008] According to the invention, the seat part is also provided with at least one connecting part that projects beyond the second axis and to which the connecting part is articulated. The seat part thus also forms a kind of two-armed lever, with the connecting part forming the short lever arm, which is significantly shorter than the other lever arm, which is essentially determined by the length of the seat part.

[0009] The connecting parts of the backrest and seat are advantageously designed so that they form an angle with each other. This contributes to the compact design of the joint connection.

[0010] In an advantageous embodiment, the connecting parts of the seat and backrest are narrow tabs. They take up little space and are inexpensive to manufacture.

[0011] It is advantageous for the backrest and / or seat to each be equipped with at least one frame. This ensures sufficient stability for both the seat and the backrest. The frame is, of course, covered, for example with padding, so that it is not visible from the outside.

[0012] Advantageously, the connecting parts of the seat and backrest are positioned on the opposite sides of the frames. These connecting parts can be easily attached to the frame. Because the connecting parts are located on opposite sides of the frame, this design contributes to a compact joint between the seat and backrest.

[0013] It is advantageous if at least one damping element, attached to the frame, engages the backrest.

[0014] The damping element is attached to the frame in such a way that it can follow the swiveling movement of the backrest.

[0015] A gas spring is advantageously used as a damping element.

[0016] With a well-designed mechanism, the gas spring can be locked. This allows the respective tilt position of the backrest to be securely maintained by locking the gas spring after the backrest has been tilted.

[0017] Seating comfort is enhanced if at least one leg rest is provided on the seat section, which can be adjusted from a resting position below the seat section to a working position in front of the seat section.

[0018] In an advantageous design, the leg rest can be moved along a guide on the seat section using at least one carriage. This allows the leg rest to be easily adjusted between the resting and working positions.

[0019] It is advantageous if the guide for the carriage is formed by opposing frame sides of the seat frame.

[0020] This eliminates the need for additional guides for the carriage.

[0021] Advantageously, the adjustment of the backrest is triggered by a shift in the user's weight. This is advantageously achieved by designing the distances between the pivot axes of the seat and backrest and the lever arm ratios such that the user's weight and the adjustment forces of the backrest and seat are at least approximately in equilibrium.

[0022] The subject matter of the application is not only defined by the subject matter of the individual patent claims, but also by all information and features disclosed in the drawings and the description. These are claimed as essential to the invention, even if they are not explicitly stated in the claims, insofar as they are novel, individually or in combination, compared to the prior art.

[0023] Further features of the invention will become apparent from the further claims, the description and the drawings.

[0024] The invention is explained in more detail below with reference to some embodiments illustrated in the drawings. These show Fig. 1 shows a schematic representation of a frame of a piece of furniture according to the invention, the back part of which assumes an upright position; Fig. 2 shows the frame according to Fig. 1 with the backrest swung back, Fig. 3 in schematic representation of various positions of the seat and backrest of the frame according to Fig. 1, Fig. 4 in a representation accordingly Fig. 3 Different settings of the seat and backrest of the frame, Fig. 5 and Fig. 6 in representations corresponding to the Figs. 1 and 2 A second embodiment of a frame of the furniture according to the invention, Fig. 7 in schematic representation and in side view a first embodiment of furniture according to the invention, the back part of which assumes an upright position, Fig. 8 the furniture according to Fig. 7 , whose back section assumes a lowered position, Fig. 9 in perspective view the frame of the furniture according to the Figs. 7 and 8 , Fig. 10 in a representation accordingly Fig. 9 The frame of a second embodiment of a piece of furniture according to the invention, Fig. 11 in schematic representation and in side view a further embodiment of a piece of furniture according to the invention, the leg rest of which is arranged in a rest position, Fig. 12 in a representation accordingly Fig. 11the piece of furniture whose leg rest assumes a supporting position, Fig. 13 in a representation accordingly Fig. 11 Another embodiment of a piece of furniture according to the invention, the leg rest of which forms a separate unit, Fig. 14 the furniture according to Fig. 13 with a lowered position of the backrest.

[0025] In the following described embodiments, the adjustable furniture is designed as a seat. The adjustable furniture can be an armchair, a chair, but also a sofa, a chaise longue, or a bed. Therefore, the illustrated and described embodiment should not be understood as limiting.

[0026] The furniture described below is designed so that the adjustment mechanism is not visible from the outside. The tilt of the backrest is achieved solely by a shift in weight by the person sitting on the furniture.

[0027] Fig. 1shows a linkage of the furniture that allows the furniture to be adjusted.

[0028] The rod has a frame 1 with a base 2, which, as the following embodiments show, can have different shapes. For example, the base 2 can be designed as a circular plate.

[0029] A stand 3 extends vertically from the center of the base 2. Near its free end, an approximately L-shaped support element 4 is attached to the stand 3. This support element has a horizontal leg 5, which is attached to the outside of the stand 3 near its free end. The leg 5 extends vertically from the stand 3 and transitions into an upward-pointing leg 6, which, for example, is at an acute angle to the leg 5. A back section 7 is pivotally attached to the free end of the leg 6 about an axis 8.

[0030] The stand 3 can advantageously be designed in such a way that the furniture can be rotated around the vertical axis of the stand 3.

[0031] At a distance from the joint axis 8, one end of a gas spring 9 is articulated to the leg 6. Its other end is articulated to a retaining part 10, which projects transversely from the back part 7.

[0032] A tab 11 extends transversely from leg 5, and a connecting tab 12 is hinged to its free end. This connecting tab 11 connects to a connecting part 13, which is part of a seat part 14.

[0033] The backrest 7 and the seat 14 are pivotally connected to each other about an axis 15. The pivot axis 15 lies parallel to the joint axis 8. The joint axis 15 is located at the free end of a connecting part 16 of the backrest 7. The connecting part 16 is at an obtuse angle to the lower edge of the backrest 7. The connecting part 16 connects the two joint axes 8 and 15.

[0034] The retaining part 4 is advantageously formed in one piece and firmly connected to the stand 3. The back part 7 with the connecting part 16 and the seat part 14 with the connecting part 13 extending at an obtuse angle to it are advantageously formed in one piece.

[0035] The gas spring 9 can be locked, so that the backrest 7 can be locked in any desired relative position to the seat 14.

[0036] To release the locking mechanism of the gas spring 9, an actuating element 17 is provided on the seat section 14, which is connected to the gas spring 9 via a Bowden cable 18. By actuating the element 17, the locking mechanism of the gas spring 9 can be released or restored for adjusting the backrest 7 and / or the seat section 14.

[0037] If the gas spring 9 is blocked, then all described parts of the linkage are locked against relative movement to each other. Fig. 1An example of a sitting position is shown in which the back section 7 extends upright at a relatively large acute angle, while the seat section 14 rises slightly from the joint axis 15.

[0038] By releasing the locking mechanism of the gas spring 9, the backrest 7 can be adjusted into a swung-back position, as exemplified in Fig. 2The backrest 7 pivots about the joint axis 8 relative to the upward-facing leg 6 of the support part 4. The seat 14 is lifted via the connecting part 16 of the backrest 7. This occurs because the connecting tab 12 pivots upwards counterclockwise about the joint axis 19, thereby lifting the seat 14 over the connecting part 13. Simultaneously, a pivoting movement occurs about the joint axis 20 between the connecting tab 12 and the connecting part 13. The seat 14 also pivots about the axis 15 relative to the backrest 7.

[0039] The lockable gas spring 9 allows the backrest 7 to be continuously adjusted from one upright end position to the other, downward-swept position. The seat section 14, due to its articulated connection to the backrest 7 and the frame 1, can also be pivoted into various positions.

[0040] A non-lockable gas spring 9 can also be used for the furniture. In this case, it serves as a damping element. The user of the furniture can change the position of the backrest 7 and the seat 14 by shifting their weight. If they put weight on the backrest 7, it pivots backward as described, while the seat 14 pivots upward.

[0041] If the user relieves pressure on the backrest 7 and applies more pressure to the seat 14, it pivots downwards again, and the backrest 7 returns to an upright position. The damping element can assist this upward movement of the backrest 7.

[0042] The distance between the pivot axes 8 and 15 of the backrest 7 and the seat 14, as well as the lengths of the lever arms 12, 13, 16, are coordinated such that the weight forces of the furniture user and the adjustment forces of the backrest 7 and seat 14 are at least approximately in balance. The furniture user can therefore easily adjust the position of the backrest 7 by shifting their weight.

[0043] Fig. 3 The schematic diagram shows the various swivel positions of backrest 7 and seat 14, assuming that backrest 7 is swivelled clockwise around axis 8 from its upright position. The starting position of backrest 7 and seat 14 is indicated by a thick solid line. The different swivel positions are shown with thinner lines.

[0044] In the initial position, the backrest 7 and the seat 14 form an obtuse angle α with each other. If the backrest 7 is pivoted clockwise around the axis 8 after releasing the gas spring 9, the seat 14 is simultaneously raised in the manner described and also pivoted around the pivot axis 15, but at a smaller angle than the backrest 7. In this way, the backrest 7 and the seat 14 are positioned optimally for the user in every pivot position of the backrest 7.

[0045] Fig. 4 The figure shows the lower end position of the back section 7 and the upper end position of the seat section 14 with thick lines. In this position, the back section 7 and the seat section 14 enclose a large obtuse angle α', which is approximately 140° in this example.

[0046] If the back section 7 is pivoted upwards from this position counterclockwise around the axis 8, the seat section 14 is simultaneously pivoted counterclockwise, but again to a smaller extent than the back section 7.

[0047] The Figs. 5 and 6 Figure 1 shows a schematic representation of a second embodiment in which the backrest 7 and the seat 14 are designed identically to the embodiment shown in Figure 2. Figs. 1 and 2The retaining part 4 has only legs 5 and 6, but not the tab 11. Instead, the angled connecting part 13 of the seat part 14 is pivotally connected to the leg 6 of the retaining part 4 via the connecting tab 12. The pivot axis 19 between the connecting tab 12 and the leg 6 is spaced apart from the pivot axis 8, about which the back part 7 can pivot relative to the leg 6 of the retaining part 4, as described in the previous embodiment. The pivot axis 19 is spaced apart from the pivot axis 8. At its other end, the connecting tab 12 is pivotally connected to the connecting part 13 of the seat part 14 about the axis 20.

[0048] Fig. 5Figure 1 shows the backrest 7 and the seat 14 in a starting position corresponding to a seated position. As in the previous embodiment, the backrest 7 and the seat 14 assume an angle α relative to each other. The backrest 7 is slightly inclined backward, while the seat 14 slopes slightly upward.

[0049] In the other end position ( Fig. 6 ), which according to the position Fig. 2 Correspondingly, the back section 7 and the seat section 14 assume the angle α', which is significantly larger than the angle α according to Fig. 5When the operator pushes the backrest 7 backward, it pivots clockwise around the axis 8. Since the backrest 7 is directly connected to the seat section 14 via the pivot axis 15, and the connecting part 13 of the seat section 14 is pivotally connected to the leg 6 of the support part 4 by means of the connecting tab 12, the seat section 14 is lifted and pivoted clockwise around the axis 15, as in the previous embodiment.

[0050] The gas spring 9 is articulated to the leg 6 of the retaining part 4 in the area between the two parallel joint axes 8, 19.

[0051] The Figs. 7 to 9 Figure 1 shows a first embodiment of a piece of seating furniture, which has side panels 21, 22 by which the seating furniture rests on the floor and between which the backrest 7 and the seat 14 are located. The side panels 21, 22 are, by way of example, plate-shaped and lie parallel to each other.

[0052] The backrest 7 has two rectangular frames 23, 24, which are hinged to each other via an axis 25. The upper frame 23 serves as a headrest and is shorter than the other frame 24. Both frames 23, 24 have the same width.

[0053] The joint 25 between the two frames 23, 24 can be designed in any suitable way. The joint axis 25 makes it possible to pivot the head section of the backrest 7 into an optimal position for the user of the furniture.

[0054] The lower frame 24 is provided with the retaining part 10 designed as a cross brace, to which one end of the gas spring 9 is hinged at half its length.

[0055] The other end of the gas spring 9 is articulated to a retaining element 27, which projects from a cross member 28, both ends of which are attached to the opposing inner surfaces of the side walls 21, 22. Advantageously, connecting plates 29, 30 are provided at both ends of the cross member 28, which enable simple yet secure attachment of the cross member 28 to the opposing inner surfaces of the side walls 21, 22.

[0056] The retaining part 27 extends halfway from the crossbeam 28 and diagonally upwards from it towards the back part 7.

[0057] As from Fig. 9 As can be seen, two connecting parts 16 protrude from the lower horizontal frame part 31 on both sides of the retaining part 27, which are firmly connected to the frame 24 and form the angled extensions of the back part 7, in side view according to the Figs. 7 and 8 .

[0058] The connecting parts 16 are located on the joint axis 8, which is attached to the free end of the retaining part 27. The joint axis 8 projects beyond both sides of the retaining part 27 and penetrates the connecting parts 16 approximately halfway along their length.

[0059] The free ends of the connecting parts 16 are hinged to the free ends of obliquely upward-facing tabs 32. They project from a frame side 33 of a frame 34 of the seat part 14. The frame is rectangular and advantageously has the same width as the frames 23, 24 of the back part 7. The frame side 33 lies parallel to the frame side 31 of the frame 24. The tabs 32 are spaced apart on both sides of the retaining part 27 and extend obliquely with respect to the plane of the frame 34.

[0060] Furthermore, tabs 35 project obliquely downwards from frame side 33, to the free ends of which connecting tabs 12 are hinged (joint axis 20), the other ends of which are hinged to the axis 19. The tabs 35 are spaced apart on both sides of the retaining part 27 and are firmly connected to frame side 33. The tabs 35 extend obliquely downwards from frame side 33.

[0061] A leg rest 36 is adjustablely mounted on the seat section 14. It has two carriages 37 which are slidably mounted on opposite frame sides 38, 39 of the frame 34. The carriages 37 are designed such that they at least partially engage the frame sides 38, 39. When the leg rest 36 is in the rest position in the area below the seat section 14 ( Fig. 7 ), the carriages 37 rest against the frame side 33 of the frame 34. When the leg support 36 is pulled out into its operating position ( Fig. 8), then the carriages 37 advantageously lie against the front frame side 40 of the frame 34 in the direction of extension.

[0062] The two carriages 37 are connected to each other by a synchronizing rod 41. This rod is U-shaped and extends obliquely forward and downward from the carriages 37 in the extension direction. Two spaced-apart support brackets 42 are attached to the central part of the synchronizing rod 41, and two parallel link arms 43 are pivotally attached to one end of each of these support arms. The other ends of the link arms 43 are pivotally attached to a leg support section 44.

[0063] In the resting position according to Fig. 7The carriages 37 are shifted so far in the opposite direction of extension that they rest against the frame side 33. The leg support section 44 is pivoted by means of the two link arms 43 so that it is located essentially above the support brackets 42. The design is such that the leg support section 44 lies completely below the seat section 14 in the rest position. Advantageously, the upper surface of the leg support section 44 rests against the underside of the seat section 14. The link arms 43 are pivoted so that their elongated narrow sides lie against each other and are arranged next to the support brackets 42.

[0064] If the leg rest 36 is to be used, the user can manually pull the leg rest part 44 out from under the seat part 14, whereby the carriages 37 are moved along the frame sides 38, 39 until they rest against the front transverse frame side 40.

[0065] Once the leg rest section 44 has been pulled out from under the seat section 14, it can be lifted by hand into the operating position as shown in Fig. 8 The parallel links 43 ensure that the leg support part 44 is adjusted translationally.

[0066] In its operating position, the leg rest section 44 is positioned at such a distance in front of the seat section 14 that the user of the furniture can comfortably rest their legs. The projecting support tabs 42 ensure sufficient clearance between the seat section 14 and the leg rest section 44.

[0067] The leg support section 44 can be pulled out from under the seat section 14 in any position of the back section 7.

[0068] After releasing the locking mechanism of the gas spring 9, the backrest 7 can be adjusted to different inclination positions as described. The seat section 14 is also pivoted to a corresponding, albeit smaller, degree, so that the backrest 7 and the seat section 14 assume an optimal relative position to each other in every position. The backrest 7 pivots about the axis 8 as described, and due to the linkage of the backrest 7 to the seat section 14, the seat section 14 also pivots about the axis 15.

[0069] The frames 23, 24 of the back section 7 and the frame 34 of the seat section 14 are each surrounded by a covering 45, 46 ( Figs. 7 and 8 The described linkage for adjusting the backrest and seat is advantageously not visible from the outside. Furthermore, the joint connection between the backrest 7 and the seat 14 is very compact, so that it takes up very little space.

[0070] The backrest section 7 can also have only a single frame, deviating from the illustrated embodiment. In that case, such a piece of furniture does not have an adjustable headrest section.

[0071] The furniture according to the Figs. 10 to 12 This embodiment differs from the previous embodiment only in that the furniture is supported on the floor not by side panels, but by the frame 1. The frame 1 has the base 2 with the centrally arranged stand 3. The base 2, for example, has a circular outline and is designed as a shallow cone.

[0072] The flat retaining part 27 extends obliquely upwards from the stand 3, to which the back part 7 and the seat part 14 are attached according to the previous embodiment. Figs. 6 to 8 are connected. Therefore, with regard to the adjustability of backrest 7 and seat 14, reference can be made to the descriptions of the exemplary embodiment according to the Figs. 7 to 9 be referred.

[0073] In Fig. 10For the sake of clarity, the leg rest 36 is not shown. It is held to the frame 34 of the seat part 14 in the same way as explained in the previous embodiment. Fig. 11 The leg rest is in the resting position and in Fig. 12 Shown in the operating position.

[0074] The side cheeks, of which in the Figs. 10 to 12 where only one side panel 21 is shown, they are shorter than in the previous embodiment because the furniture is supported on the floor via the frame 1.

[0075] The Figs. 13 and 14 The figures show the possibility of designing the leg support 36 as an independent unit that is placed in front of the furniture. The furniture itself is designed in the same way as the embodiment according to the figures. Figs. 10 to 12 The adjustment of the backrest 7 and seat section 14 is therefore carried out in the same way as in this embodiment.

[0076] The leg support 36 has a frame 47 which includes a foot section 48. The foot section 48 can have any suitable outline. In the exemplary embodiment, the foot section 48 has a circular outline. Furthermore, the foot section 48 is slightly conical.

[0077] A stand 49 extends vertically upwards from the center of the foot section 48, to which a diagonally upward-facing support 50 is attached. The leg rest 44 is pivotally mounted at its free end. The pivot axis 51 is perpendicular to the axis of the stand 49 and is located off-center on the leg rest 44. For example, the pivot axis 51 is located in the area of ​​the end of the leg rest 44 facing away from the furniture.

[0078] In Fig. 13 The leg support section 44 assumes a horizontal position. Such a position is recommended when the backrest section 7 is in a sitting position.

[0079] However, if the back section 7 is swung downwards ( Fig. 14), the seat section 14 is pivoted slightly upwards in the manner described. In order to achieve optimal leg support in this case, the leg support section 44 is pivoted upwards about the axis 51, so that the leg support section 44 slopes upwards towards the furniture.

[0080] The leg support 36 as an independent unit can also be used in the previously described embodiments of the furniture.

[0081] The described embodiments are characterized by a compact design of the joint connection between the backrest 7 and the seat 14. This is achieved in particular by the fact that the seat 14 is articulated to the frame 1, 4, 28 by means of connecting tabs 12. The connecting tabs 12 are articulated to an angled connecting part 13 of the seat 14. The pivot point of the backrest 7 to the seat 14 (pivot axis 15) and the pivot point of the connecting tabs 12 to the connecting parts 13 of the seat 14 are spaced apart. This creates a kind of reduction in movement, ensuring that when the backrest 7 pivots about the axis 8 relative to the frame, the seat 14 pivots a smaller amount in the same direction than the backrest 7.

Claims

1. a. Furniture comprising at least one back part (7) b. which is pivotably connected to at least one frame (1, 4; 27, 28) via a first axis (8) c. and is pivotably connected to a seat part (14) via a second axis (15) located parallel to the first axis (8), d. wherein at least one connecting part (12) is pivoted to the seat part (14) at a distance from the second axis (15), e. which is pivotly connected to the frame (1, 4; 27, 28), f. wherein the frame-side pivot axis (19) of the connecting part (12) is provided at a distance from the first axis (8) on the frame (1, 4; 27, 28), g. wherein the seat part (14) has at least one connecting part (13) h. which projects beyond the second axis (15) i. and to which the connecting part (12) is pivoted, j. wherein the back part (7) has at least one connecting part (16) which is located at an obtuse angle to the lower edge of the back part (7) and k. which connects the first axis (8) and the second axis (15) to one another, characterized in l. that the seat part (14) forms a two-armed lever, wherein the connecting part (13) forms the short lever arm which is substantially shorter than the other lever arm which is substantially determined by the length of the seat part (14), m. that the connecting part (16) of the back part (7) projects beyond the first axis (8) in the direction of the seat part (14), n. that the second axis (15) is provided at the free end of the connecting part (16), o. and that the back part (7) is a two-armed lever in which the connecting part (16) forms a short lever arm which is substantially shorter than the other lever arm which accounts for almost the entire length of the back part (7).

2. Furniture according to Claim 1, characterized in that the connecting part (13) of the seat part (14) encloses an angle with the connecting part (16) of the back part (7).

3. Furniture according to Claims 1 or 2, characterized in that the connecting parts (13, 16) of the seat part (14) and the back part (7) are narrow tabs.

4. Furniture according to one of Claims 1 to 3, characterized in that the back part (7) and / or the seat part (14) each have at least one frame (23, 24; 34).

5. Furniture according to one of Claims 1 to 4, characterized in that the connecting parts (13, 16) of the seat part (14) and the back part (7) are provided on mutually facing frame sides (31, 33) of the frames (23, 24; 34) of the back part (7) and the seat part (14).

6. Furniture according to one of Claims 1 to 5, characterized in that at least one damping element (9) acts on the back part (7) and is attached to the frame (1, 4; 27, 28).

7. Furniture according to one of Claims 1 to 6, characterized in that the damping element (9) is a gas spring which is preferably lockable.

8. Furniture according to one of Claims 1 to 7, characterized in that the seat part (14) lies between two closed side panels (21, 22).

9. Furniture according to one of Claims 1 to 8, characterized in that at least one leg rest (36) is provided on the seat part (14), which is adjustable from a rest position below the seat part (14) to a usage position in front of the seat part (14).

10. Furniture according to Claim 9, characterized in that the leg rest (36) is slidable along a guide (38, 39) on the seat part (14) with at least one carriage (37).

11. Furniture according to Claim 10, characterized in that the guide (38, 39) is formed by opposing frame sides of the frame (34) of the seat part (14).

12. Furniture according to one of Claims 1 to 11, characterized in that the distance between the pivot axes (8, 15) of the back part (7) and the seat part (14) and the length ratios of the connecting part (12) and the connecting parts (13, 16) are coordinated such that the weight forces of the furniture user and the adjustment forces of back part (7) and seat part (14) are at least approximately in equilibrium.