Folding frame for folding furniture and folding furniture

Abstract

The utility model relates to a folding type frame for folding type furniture and the folding type furniture. The folding type frame comprises a bottom beam; the head supports the mattress bracket; the body supports the mattress bracket; a first head support coupling; a second head support coupling; the first body supports the connector; the second body supports the coupling piece; comprising a foot member and a foot member bracket, the foot member bracket is connected to the body supporting mattress bracket, the foot member is connected to the foot member bracket at a hinge point at a first end thereof, and a second end of the foot member comprises a foot stand resting on the ground in the unfolded state of the frame; and a synchronization coupling having a first end connected to the foot member and a second end connected to the first body support coupling and connected to the foot member via a second hinge point positioned farther from the foot stand than the hinge point at which the foot member is connected to the foot member bracket. The folding frame overcomes the defect that a frame in the prior art is inconvenient to use.

Description

TECHNICAL FIELD

[0001] The present utility model relates to a folding frame for a folding furniture, such as a sofa bed, and a folding furniture comprising such a folding frame. BACKGROUND

[0002] Such folding frames for folding furniture, in particular sofa beds, are often used in the prior art.

[0003] Therefore, such a folding frame is known from WO 2004 086 913 (WO‘913). The folding frame according to WO‘913 comprises two revolute prismatic joints which are connected at a first end to a body support joint and at a second end to two different bottom beams.

[0004] The folding frame according to WO‘913 is disadvantageous in that both ends of the revolute prismatic joints are connected vertically spaced to the two mentioned bottom beams. This vertical spacing requires a lot of (vertical) space for folding and unfolding of the frame. In addition, the inventors have noticed that the shape and placement of the revolute prismatic joints do not allow a smooth unfolding of the frame.

[0005] Furthermore, the folding frame of WO‘913 has additional drawbacks. In many cases, the user will be sitting on the edge of the bed at the moment they get up. Due to the fact that the joints protrude high above the mattress surface, it is not comfortable to sit on the edge of the bed. SUMMARY

[0006] The present utility model aims at solving at least some of the above-mentioned problems or drawbacks. The object of the present utility model is to provide a folding frame which eliminates these drawbacks.

[0007] In a first aspect, the present utility model relates to a folding frame which is suitable for being arranged in a folding furniture, such as a sofa or a sofa bed. The proposed folding frame is very advantageous in that the stowed frame is very compact (in terms of height) ensuring that the folding furniture has a comfortable seating height and can also be more easily manoeuvred. Furthermore, it makes the process for folding and unfolding the frame very simple and minimal in terms of effort, whereby, by manoeuvring one component, the rest of the frame is automatically unfolded without the need for further actions, as is usually the case (such as separate unfolding of the feet or additional support elements).

[0008] In a second aspect, the present utility model relates to a folding furniture comprising a frame according to the first aspect of the present utility model. Preferably, the folding furniture is a sofa or a sofa bed, preferably a sofa bed.

[0009] The present utility model also comprises the non-limiting examples defined in the following clauses.

[0010] Clause 1. A foldable frame for a foldable furniture, wherein the foldable frame comprises on two lateral sides:

[0011] a bottom beam adapted to be coupled to opposite lateral sides of the foldable furniture;

[0012] a substantially rectangular head support mattress support comprising an elongated head support side;

[0013] a substantially rectangular body support mattress support comprising an elongated body support side;

[0014] a first head support link having a first end hingedly connected to the bottom beam and a second end hingedly connected to the head support mattress support;

[0015] a second head support link having a first end hingedly connected to the bottom beam and a second end hingedly connected to the head support mattress support;

[0016] a first body support link having a first end hingedly connected to the body support mattress support and a second end hingedly connected to the head support mattress support via a first hinging point;

[0017] a second body support link having a first end hingedly connected to the bottom beam and a second end hingedly connected to the body support mattress support;

[0018] a leg portion comprising a leg member and a leg member support, wherein the leg member support is connected to the body support mattress support, and wherein the leg member is hingedly connected to the leg member support at a hinging point at a first end of the leg member, wherein the first end of the leg member is opposite a second end of the leg member, the second end of the leg member comprising a foot stand for resting on a ground surface in a deployed state of the foldable frame;

[0019] a synchronization link having a first end hingedly connected to the leg member and a second end hingedly connected to the first body support link, wherein the synchronization link is connected to the leg member via a second hinging point at the first end of the leg member, wherein the second hinging point is positioned further away from the foot stand than the hinging point at which the leg member is hingedly connected to the leg member support.

[0020] Clause 2. The foldable frame for foldable furniture of clause 1, wherein the synchronization link is connected to the first end of the first body support link at a first link point, wherein the first body support link is connected to the body support mattress support at a second link point, wherein the second link point is positioned further away from the first end of the first body support link than the first link point, and wherein the first link point is positioned off-axis relative to the second link point and the first articulation point.

[0021] Clause 3. The foldable frame for foldable furniture of clause 1 or 2, wherein the leg member support and the leg member are articulately connected to each other via an articulation point at which they are articulately connected to each other and via a slot-and-pin mechanism comprising a pin on one of the leg member support and the leg member and a slot on the other of the leg member support and the leg member, wherein the slot is in the shape of a circular arc, and wherein the pin protrudes through the slot and stands upright perpendicular to the plane of the slot.

[0022] Clause 4. The foldable frame for foldable furniture of any one of clauses 1 to 3, wherein the second head support link and the head support mattress support are articulately connected at an eighth articulation point, wherein the eighth articulation point and the first articulation point are the same articulation point.

[0023] Clause 5. The foldable frame for foldable furniture of any one of clauses 1 to 4, wherein the second head support link and the first body support link are rigidly connected via one or more link fixation points.

[0024] Clause 6. The foldable frame for foldable furniture of any one of clauses 1 to 5, wherein the first head support link is articulately connected to the bottom beam via a third articulation point, wherein the third articulation point is at a first end of the bottom beam, and wherein the first head support link is articulately connected to the head support mattress support via a fourth articulation point, wherein the fourth articulation point is at a first end of the head support mattress support, wherein in the unfolded state of the foldable frame, the first end of the bottom beam and the first end of the head support mattress support are positioned further away from the body support mattress support.

[0025] Clause 7. The foldable frame for foldable furniture according to any one of Clauses 1 to 6, wherein the second head support link is hingedly connected to the bottom beam via a fifth articulation point at a second end of the bottom beam, wherein the first articulation point is positioned at a second end of the head support mattress support, and wherein in the unfolded state of the foldable frame, the second end of the bottom beam and the second end of the head support mattress support are proximally positioned relative to the body support mattress support.

[0026] Clause 8. The foldable frame for foldable furniture according to any one of Clauses 1 to 7, wherein the second body support link comprises an L-shaped swivel bar and an elongated steering bar, wherein the L-shaped swivel bar is hingedly connected to the bottom beam with a first end via a sixth articulation point, and wherein the elongated steering bar is hingedly connected to the body support mattress support with a first end via a seventh articulation point, and wherein the L-shaped swivel bar and the elongated steering bar are fixedly connected to each other at second ends of the elongated steering bar and the L-shaped swivel bar via one or more bar fixation points, wherein the elongated steering bar extends in a direction of elongation of an arm of the L-shaped swivel bar.

[0027] Clause 9. The foldable frame for foldable furniture according to any one of Clauses 1 to 8, wherein the leg member support is rigidly connected to the body support mattress support at two or more leg fixation points.

[0028] Clause 10. The foldable frame for foldable furniture according to any one of Clauses 1 to 9, wherein the body support mattress support is provided with one or more stop elements extending transversely and positioned such that when the head support mattress support and the body support mattress support are in line with each other in the unfolded state of the foldable frame, the first body support link rests against the one or more stop elements and the one or more stop elements prevent further rotation of the first body support link.

[0029] Clause 11. The foldable frame for foldable furniture according to any one of clauses 1 to 10, wherein the first head support coupling is L-shaped and comprises two arms extending from a central connection, wherein a first arm of the two arms terminates at the first end of the first head support coupling, wherein a second end of the first arm is at a level of the central connection and comprises a third articulation point through which the first head support coupling is articulately connected to the bottom beam, and wherein a second arm of the two arms is provided with a rigid stop element, wherein in the folded state of the foldable frame the rigid stop element rests on a first end of the bottom beam, which in the unfolded state of the foldable frame is positioned distantly with respect to the body support mattress holder.

[0030] Clause 12. The foldable frame for foldable furniture according to any one of clauses 1 to 11, wherein the foldable frame further comprises a head support mattress frame for accommodating and supporting a mattress, the head support mattress frame being provided on the head support mattress holder, and a body support mattress frame for accommodating and supporting a mattress, the body support mattress frame being provided on the body support mattress holder.

[0031] Clause 13. The foldable frame for foldable furniture according to any one of clauses 1 to 12, wherein the first body support coupling is connected to two lateral sides of the foldable frame via a coupling bar, the coupling bar being parallel to a plane defined by the bottom beam and substantially perpendicular to the elongated head support side, wherein in the unfolded state of the foldable frame the coupling bar abuts a lower side of the head support mattress holder.

[0032] Clause 14. The foldable frame for foldable furniture according to any one of clauses 1 to 13, wherein one or more components of the foldable frame are connected in one piece on both sides.

[0033] Clause 15. The foldable frame for foldable furniture according to any one of clauses 1 to 14, wherein the maximum height of the foldable frame in the folded state is 30 cm.

[0034] Clause 16. The foldable frame for foldable furniture according to clause 3, wherein the pin is located on the leg member holder and the slot is located on the leg member.

[0035] Clause 17. The foldable frame for foldable furniture according to clause 5, wherein one of the one or more coupling points is the first articulation point.

[0036] Clause 18. The folding frame for folding furniture according to clause 11, wherein the rigid stop element is rigidly connected to the first head support link at a stopper fixation point at the end of the second arm of the two arms.

[0037] Clause 19. The folding frame for folding furniture according to clause 13, wherein the link bar is rigidly connected to the first body support link via one or more link fixation points.

[0038] Clause 20. The folding frame for folding furniture according to clause 14, wherein one or more components of the folding frame are connected as one on both sides by separate connecting elements.

[0039] Clause 21. The folding frame for folding furniture according to clause 15, wherein the maximum height of the folding frame in the folded state is 25 cm.

[0040] Clause 22. A folding furniture comprising a seating portion, wherein the seating portion comprises a hollow shell, wherein the folding frame for folding furniture according to any one of clauses 1 to 21 is fixed inside the hollow shell with the base beam.

[0041] Clause 23. The folding furniture according to clause 22, wherein the folding furniture is a sofa.

[0042] Clause 24. The folding furniture according to clause 22, wherein the folding furniture is a sofa bed.

[0043] Clause 25. The folding furniture according to clause 22, wherein the folding furniture comprises a backrest portion. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 A side view of the unfolded frame in a piece of folding furniture is shown, where in the upper figure the individual components are indicated and in the lower figure the points at which the individual components are fixedly, rotatably, pivotably or hingedly connected to each other are indicated.

[0045] Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 Successive side views of the frame when unfolded are shown.

[0046] List of components:

[0047] 1 Base beam

[0048] 2 Stop element

[0049] 3 first head support link

[0050] 4 head support mattress support

[0051] 5 rotation bar

[0052] 6 steering bar

[0053] 7 second head support link

[0054] 8 first body support link

[0055] 9 body support mattress support

[0056] 10 synchronizing link

[0057] 11 leg member support

[0058] 12 leg member

[0059] 13 connecting bar

[0060] 14 head support mattress frame

[0061] 15 body support mattress frame

[0062] A third articulation point

[0063] B fourth articulation point

[0064] C stopper fixation point

[0065] D sixth articulation point

[0066] E bar fixation point

[0067] F seventh articulation point

[0068] G fifth articulation point

[0069] H, H+ link fixation point

[0070] H+ first articulation point

[0071] I link fixation point

[0072] J stopper element

[0073] K second articulation point

[0074] L first articulation point

[0075] M, N leg fixation point

[0076] O second articulation point

[0077] P pin

[0078] Q articulation point DETAILED DESCRIPTION

[0079] Unless otherwise defined, all terms (including technical and scientific terms) used in the description of the present utility model have the meanings commonly understood by one of ordinary skill in the art in the field of the present utility model. In order to better understand the description of the present utility model, the following terms are explicitly explained.

[0080] In the present text, "a" and "the" refer to both the singular and the plural, unless the context otherwise requires. For example, "segment" means one or more segments.

[0081] When the terms "about" or "approximately" are used in the present text in connection with a measurable quantity, parameter, duration, or time interval, etc., then the term is meant to refer to a quantity, which is near to the stated value of the quantity, and which can be understood to be within approximately 20% or less, preferably approximately 10% or less, more preferably approximately 5% or less, even more preferably approximately 1% or less, and even more preferably approximately 0.1% or less of the stated value of the quantity, as long as such variations are appropriate for the utility model described. However, this must be understood to mean that the magnitude of the value using the terms "approximately" or "about" is itself specifically disclosed.

[0082] The terms "comprise", "consist of", "be provided with", "have", "include", "contain", are synonyms and are inclusive or open-ended terms that indicate the presence of what follows, and do not exclude or preclude the presence of additional components, features, elements, members, steps as known in the art or as disclosed in the art.

[0083] "Frame" in the context of the present text is to be understood as an assembly of parts which serve as a supporting structure for further elements and / or structures. These parts can be, for example, couplings, coupling parts, brackets or frames. Such a structure can be a sofa bed. Preferably, the frame is arranged inside such a structure. Such a frame can also be arranged outside the structure. Such a frame can be arranged inside and outside the structure.

[0084] "Coupling" in the context of the present text is to be understood as an element which is suitable for being coupled or connected with another coupling, bracket and / or frame, etc. This can be done, for example, by means of a simple opening, into which the coupling and one of the above-mentioned elements are anchored, for example, by means of hooks, screws or other coupling parts. "Beam" in the context of the present text is to be understood as a substantially beam-shaped frame element.

[0085] "Pivotable" or "hingable" in the context of the present text is to be understood as rotatable about a support point. The support point can be a point of connection between two couplings or between a coupling and another frame element.

[0086] The term "longitudinal axis" shall be understood in the context of the present text as a straight line axis parallel to a side of the surface or a straight line axis connecting two connection points to each other.

[0087] "Longitudinal" shall be understood in the context of the present text as a direction which is horizontal when the frame is placed on a horizontal surface. In essence, the direction is the direction in which the frame, i.e. the various mattress frames, is folded and / or unfolded.

[0088] End-point citing numerical intervals include all integers, fractions and / or real numbers between the end points, including those end points.

[0089] In the following, both aspects of the present utility model are dealt with together. Any feature described in this text can refer to any aspect, even if the feature is described in connection with a specific aspect of the present utility model.

[0090] It will be apparent to the person skilled in the art that any technical element described in connection with an aspect of the present utility model can be provided in a suitable number without departing from the subject matter of the present utility model. In particular, the components of the frame, such as the head support coupling, the body support coupling and other couplings and components, can be provided in multiple ways, e.g. double, triple, quadruple, quintuple, etc. Preferably, at least the head support coupling, the body support coupling, the body support mattress holder and the head support mattress holder and the couplings therebetween are provided double. Preferably, the components are provided double on each (transverse) side in a direction perpendicular to the longitudinal direction of the folding frame, respectively.

[0091] The terms "head support mattress holder" and "head support mattress frame" and the like of one aspect and "body support mattress holder" and "body support mattress frame" and the like of the other aspect do not imply any functional limitation in terms of length or functionality (they only support the head or the body) and are only used to indicate which end of the frame (head or foot) is relevant. As shown, both parts have essentially the same dimensions, which is more compact in the folded state.

[0092] The frame according to the present utility model has the ability to unfold from a folded state to an unfolded state. Thus, the frame in the unfolded state can be equipped with one or more mattress frames suitable for receiving a mattress. Thereby, the mattress can be mounted and / or secured to the mattress frame.

[0093] In a first aspect, the present utility model relates to a folding frame suitable for being coupled in a folding furniture, preferably a sofa or a sofa bed, said folding frame comprising on two transverse sides:

[0094] a bottom beam, said bottom beam being suitable for being coupled to opposite transverse sides of said folding furniture;

[0095] A substantially rectangular head support mattress support frame comprising an elongated head support side;

[0096] A substantially rectangular body support mattress support frame comprising an elongated body support side;

[0097] A first head support link having a first end hingedly connected to the bottom beam and a second end hingedly connected to the head support mattress support frame;

[0098] A second head support link having a first end hingedly connected to the bottom beam and a second end hingedly connected to the head support mattress support frame;

[0099] A first body support link having a first end hingedly connected to the body support mattress support frame and a second end hingedly connected to the head support mattress support frame via a first hinging point;

[0100] A second body support link having a first end hingedly connected to the bottom beam and a second end hingedly connected to the body support mattress support frame;

[0101] A leg portion comprising a leg member and a leg member support, wherein the leg member support is connected to the body support mattress support frame, and wherein the leg member is hingedly connected to the leg member support at a hinging point at a first end of the leg member, wherein the first end of the leg member is opposite a second end of the leg member, the second end of the leg member comprising a foot stand for resting on a ground surface in a deployed state of the foldable frame;

[0102] A synchronization link having a first end hingedly connected to the leg member and a second end hingedly connected to the first body support link, wherein the synchronization link is connected to the leg member via a second hinging point O at the first end of the leg member, wherein the second hinging point is positioned further away from the foot stand than the hinging point at which the leg member is hingedly connected to the leg member support.

[0103] The bottom beams are substantially elongated and serve to anchor the frame to the housing of the foldable furniture and are provided on both lateral sides of the frame. Preferably, as shown in the figures, they are provided inclined at a slight angle forward with respect to the horizontal plane in order to obtain a better force distribution during folding and unfolding.

[0104] The head support mattress supports and the body support mattress supports are also typically elongated and are arranged on both sides of the frame and serve to hold the mattress frame to support the mattress or directly to the mattress itself (e.g. box spring).

[0105] The first head support link and the second head support link ensure that the head support mattress support is simply raised from a lower position underneath the bottom beam in the folded state of the frame (see e.g. Figure 2 ) to a higher position in the unfolded state (see Figures 3 to 5 and Figure 1 and Figure 6 ).

[0106] The first body support link and the second body support link enable the body support mattress support to be simply raised and in particular displaced from a position just above the bottom beam in the folded state to a position extending from the head support mattress support in the unfolded state, thus providing a raising along the longitudinal axis of the frame but mainly a displacement.

[0107] By hingedly connecting the body support links to the bottom beam and the head support mattress support as shown, this double movement becomes possible without much additional effort.

[0108] Finally, the synchronization link (and the construction of the leg part) ensures that the leg is folded in and out together with the mattress supports.

[0109] In this way, a system is provided which is folded in and out with one movement by manipulating the most distal component, i.e. the body support mattress support (or the mattress frame arranged on / in it) relative to the housing of the folding furniture. Thereby, the leg part is automatically folded in or out and the head support mattress support is also moved to the folded or unfolded position.

[0110] According to one embodiment, the synchronization link is connected at a first link point to the first end of the first body support link, wherein the first body support link is connected at a second link point to the body support mattress support, wherein the second link point is more distally positioned towards the first end of the first body support link than the first link point, and wherein the first link point is positioned off-axis relative to the second link point and the first hinge point. Preferably, the second link point and the first link point are located in an intermediate section of the body support mattress support, wherein the intermediate section belongs to a central region extending maximally 40%, preferably maximally 30%, and more preferably maximally 25% around a midpoint of the body support mattress support. Here, the first link point and the second link point are located at the end of the intermediate section closest to the head end of the frame (the end of the intermediate section closest to the head support mattress support in the unfolded state).

[0111] The above configuration ensures a simple power transfer between the support mattress supports (the body support mattress support and the head support mattress support) and thus the drive / movement between them. By not positioning the first body support coupling too far up the body support mattress support, the load arm remains short enough to ensure that the load on the load arm does not become too great and there is no risk of bending or deformation, while also ensuring that the force required to deploy remains manageable for most users.

[0112] According to one embodiment, the foot member support and the foot member are hingedly connected via their point of articulation Q and via a pin-in-groove hingedly connected, the pin-in-groove comprising a pin on one of the foot member support and the foot member and a groove on the other of the foot member support and the foot member, wherein the groove is in the shape of a circular arc, and wherein the pin extends through the groove and stands perpendicular to the plane of the groove. A circular arc is a part of a circle with the point of articulation as midpoint. Preferably, the pin is on the foot member support and the groove is on the foot member, which allows for a simpler configuration that does not affect other components.

[0113] This mechanism simplifies the movement and also provides a limitation so that it is no longer possible to over-rotate or deform. Furthermore, the movement is guided so that damage to the parts is virtually impossible. Due to the connections between the foot member support, the foot member, the body support mattress support and the synchronization coupling, it is also ensured that the other mechanisms cannot be rotated beyond certain positions.

[0114] According to one embodiment, the second head support coupling and the head support mattress support are hingedly connected at an eighth point of articulation, wherein the eighth point of articulation and the first point of articulation are the same point of articulation.

[0115] According to one embodiment, the second head support coupling and the first body support coupling are rigidly connected via one or more coupling fixation points. Preferably, one of the coupling fixation points is the first point of articulation. In this way, with one coupling, multiple mechanisms can be driven and the synchronization between the individual elements is optimal so that there are no multiple separate load points or resistances experienced when folding or deploying.

[0116] According to one embodiment, the first head support link is hingedly connected to the bottom beam via a third hinge point. Here, the third hinge point is located at a first end of the bottom beam and the first head support link is hingedly connected to the head support mattress support via a fourth hinge point. The fourth hinge point is located at a first end of the head support mattress support. In the unfolded state of the folding frame, the first end of the bottom beam and the first end of the head support mattress support are positioned distally relative to the body support mattress support.

[0117] According to one embodiment, the second head support link is hingedly connected to the bottom beam via a fifth hinge point at a second end of the bottom beam, wherein the first hinge point is positioned at a second end of the head support mattress support, and wherein, in the unfolded state of the folding frame, the second end of the bottom beam and the second end of the head support mattress support are proximal to the body support mattress support.

[0118] According to one embodiment, the second body support link comprises an L-shaped swivel rod and an elongated steering rod, wherein the L-shaped swivel rod is hingedly connected to the bottom beam at a first end via a sixth hinge point, and wherein the elongated steering rod is hingedly connected to the body support mattress support at a first end via a seventh hinge point. The L-shaped swivel rod and the elongated steering rod are fixedly interconnected to each other at second ends of the elongated steering rod and the L-shaped swivel rod via one or more rod fixation points, wherein the elongated steering rod extends congruently with an arm of the L-shaped swivel rod.

[0119] According to one embodiment, the foot member support is rigidly connected to the body support mattress support at two or more foot fixation points. In this way, this anchoring is strong enough to withstand the necessary forces during loading and handling, especially considering the limited distance between the foot fixation points and the hinge points connecting the foot member support and the foot member, and the counter forces thereon can be relatively high. In order to withstand this situation deterministically, a multi-point fixation is recommended.

[0120] According to an embodiment, the body support mattress support is provided with one or more stop elements, which extend transversely and are positioned such that, when the head support mattress support and the body support mattress support are in line with each other in the unfolded state of the folding frame, the first body support coupling rests against the one or more stop elements and the one or more stop elements prevent the first body support coupling from rotating further. Preferably, a stop element is provided individually on each lateral side of the frame and extends away from the frame for a limited length such that it complies with the width of the folding furniture and fits therein. Since the first body support coupling is connected directly articulately to the body support mattress support, it is close to the body support mattress support, the only requirement being to have enough space to avoid obstacles due to friction between the two, etc., so the stop element only needs to be very short to already be in the path of the first body support coupling. In this way, this body support coupling also provides a structural contribution to the robustness of the frame under load, so that the coupling between the body support mattress support and the head support mattress support is not overstressed.

[0121] According to an embodiment, the first head support coupling is L-shaped and comprises two arms extending from a central connection. A first arm of the two arms terminates at the first end of the first head support coupling, wherein a second end of the first arm is at the central connection and comprises a third articulation point through which the first head support coupling is articulately connected to the bottom beam. A second arm of the two arms is provided with a rigid stop element. In the folded state of the folding frame, the stop element rests on a first end of the bottom beam, which in the unfolded state of the folding frame is positioned away from the body support mattress support. The rigid stop element is preferably rigidly connected to the first head support coupling at a stop element fixation point at the end of the second arm of the two arms.

[0122] By acting with such a stop element, it is ensured that in the folded state, once the folded state has been reached, the head support mattress coupling cannot move / rotate further without damaging the mechanism.

[0123] According to an embodiment, the folding frame further comprises a head support mattress frame for accommodating and supporting a mattress, which is provided at the head support mattress support, and a body support mattress frame for accommodating and supporting a mattress, which is provided at the body support mattress support. The mattress frames can also be provided directly on the supports or even integrated with the supports as a single piece.

[0124] As mentioned above, the mattress frame can also be provided immediately with a mattress and, for example, take the form of a box spring.

[0125] According to one embodiment, the first body support coupling is connected to the two lateral sides of the folding frame via a coupling bar, preferably rigidly connected to the first body support coupling via one or more coupling points, the coupling bar being parallel to the plane defined by the bottom beam and substantially perpendicular to the elongated head support side, wherein, in the unfolded state of the folding frame, the coupling bar rests against the lower side of the head support mattress support.

[0126] According to one embodiment, one or more components of the folding frame are optionally connected integrally on both sides, preferably by a single connecting element or connecting bar (or multiple connecting elements or connecting bars at different locations for better force distribution).

[0127] This connecting bar supports the synchronization of the operation of both sides, ensures better force distribution, and by redistributing the forces, it can prevent the user from damaging the mechanism during the process of exerting uneven forces while manipulating.

[0128] According to one preferred embodiment, the maximum height of the frame in the folded state is 30 cm, preferably no more than 25 cm. The housing should not be included in this calculation.

[0129] According to a preferred embodiment, the unfolded frame has a length from the most distal end of the body support mattress support (or body support mattress frame) to the most distal end of the head support mattress support (or head support mattress frame) of at least 1.50 m, preferably at least 1.75 m, more preferably at least 2.00 m, and even more preferably at least 2.10 m or even 2.20 m.

[0130] According to a preferred embodiment, the body support mattress support and the head support mattress support have a length of at least 60 cm, preferably at least 70 cm, more preferably at least 75 cm or even 80 cm, 85 cm, 90 cm, 95 cm or 100 cm.

[0131] According to a preferred embodiment, the bottom beam, the supports and the couplings are made of metal, and more preferably, other elements such as the leg portions are also made of metal.

[0132] In a second aspect, the utility model relates to a folding furniture, preferably a sofa or a sofa bed, comprising a seat portion and optionally a backrest portion, wherein the seat portion comprises a hollow housing, and a folding frame according to the first aspect is attached to the inside of the hollow housing with a bottom beam.

[0133] In the following, the utility model is described by illustrating non-limiting examples of the utility model, and these examples are not intended and should not be interpreted as limiting the scope of the utility model.

[0134] Examples

[0135] Figure 1 The frame is shown in the unfolded state.

[0136] Figures 2 to 6 The frame is shown in the continuous unfolded position, starting from the folded state in Figure 2 to the unfolded state in Figure 6 . It is obvious that the reverse procedure of folding upwards can be considered as the reverse steps of the steps for unfolding and the sequence of Figure 6 , Figure 5 , Figure 4 , Figure 3 and Figure 2 is visible.

[0137] The utility model consists in creating a mechanism that can very easily be transformed from a sofa into a bed and that provides new kinematics to easily handle it forward and that can also be fixed to a wall or partition, for example, to better support and stabilize the force distribution.

[0138] The foot parts are integrated to open and close simultaneously in a single movement.

[0139] There are also fixed stops on the mechanism in the sofa position and in the bed position (folded and unfolded state) that allow to properly support the individual components in the folded and unfolded state, thus better distributing the load and preventing excessive rotation.

[0140] As shown in Figure 2 and Figure 3 , by performing the movement A-A, the frame starts to open. Thereby, after resting on the bottom beam 1 in Figure 2 , in Figure 3 , the contact point "2-2" of the stop element 2 of the first head support link 3 no longer contacts the contact point "1-1" of the bottom beam 1. The stop element 2 is fixedly connected to the first head support link 3 via the stop point C. In the same movement A-A, the body support mattress frame 15 provided on the body support mattress holder 9 moves upwards and partly forwards, causing other connecting parts to move together and the frame mechanism to start to open.

[0141] In Figure 4In this position, the frame is further unfolded: the body support mattress frame 15 and the body support mattress bracket 9 are further moved upwards by means of the steering lever 6, which is attached to the bottom beam 1 via the sixth articulation point D. Furthermore, the rotating lever 5 is also attached to the steering lever 6 via the lever fixation point E. The steering lever is articulately attached to the body support mattress bracket via the seventh articulation point F. Finally, the first body support link 8 is rigidly connected with the (L-shaped) second head support link 7 via the link fixation points H, H+. This second head support link 7 is itself articulately attached to the bottom beam 1 via the fifth articulation point G. The first body support link 8 is on the one hand articulately connected to the body support mattress bracket 9 via the second link point K and is also articulately connected to the synchronization link 10 via the first link point L, wherein the second link point K is positioned more distally (further away) from the link fixation points H, H+ than the first link point L.

[0142] Thus, the movement of the first body support link 8 causes a mutually different movement of the synchronization link 10 and the body support mattress bracket 9, thereby allowing the foot part to move. The foot member bracket 11 is fixedly connected with the body support mattress bracket 9 by means of the foot fixation points M, N. The foot member 12 is itself articulately attached to the foot member bracket 11 via the articulation point Q and is articulately attached to the other end of the synchronization link 10, so that the foot member 12 can fold in and out against the body support mattress bracket 9 relative to the fixed foot member bracket 11.

[0143] The pin P is finally provided on the foot member bracket 11 and is movable in a slot in the form of an arc with midpoint articulation point Q on the foot member 12 to avoid deformation of the foot member.

[0144] On the bottom beam 1, the first head support link 3 is also articulately provided via the third articulation point A, wherein the other end of the first head support link 3 is articulately provided to the head support mattress bracket 4 via the fourth articulation point B.

[0145] The head support mattress frame 14 can then be provided on or to the head support mattress bracket 4.

[0146] In Figure 5 In this position, the mechanism is further unfolded by movement A-A. Thus, due to the delayed unfolding via the positioning and configuration of the first body support link 8 and the synchronization link 10, the foot member 12 is further unfolded without contacting the housing of the folding furniture piece. In this position, the body support mattress bracket 9 and the body support mattress frame 15 are in the highest position, taking into account the most vertical orientation of the first body support link 8 and the steering lever 6. By providing the link lever 13, which is attached to the first body support link via the link fixation point I, stability and synchronization of the movement on both lateral sides is guaranteed in this position.

[0147] In Figure 6 the final fully deployed system is visible, in which the foot members 12 contact the ground. Here, it is also visible that the first body support coupling 8 abuts against the stop element J on the underside of the stop element J, thus preventing further rotation and thus preventing the frame from resting on the folding furniture (outside at the bottom beam 1, which is connected to the folding furniture).

[0148] To close the frame, the user can move the end of the body support mattress frame 15 or the body support mattress support 9 (the end farthest from the folding furniture for maximum torque) upwards, thus starting the folding, and the rest of the mechanism follows this movement.

[0149] The utility model should not be interpreted as limited to the above embodiments, and certain modifications or changes can be added to the described examples without necessarily reevaluating the attached claims. For example, the utility model is described with reference to folding furniture pieces such as chairs, sofas, sofa beds, armchairs, etc., but it should be clear that the utility model can be applied, for example, to a bedside table or a cabinet.

Claims

1. A folding frame for a folding furniture, characterized in that, The folding frame comprises on two lateral sides: a bottom beam adapted to be coupled to opposite lateral sides of the folding furniture; a rectangular head support mattress support comprising elongated head support sides; a rectangular body support mattress support comprising elongated body support sides; a first head support link having a first end hingedly connected to the bottom beam and a second end hingedly connected to the head support mattress support; a second head support link having a first end hingedly connected to the bottom beam and a second end hingedly connected to the head support mattress support; a first body support link having a first end hingedly connected to the body support mattress support and a second end hingedly connected to the head support mattress support via a first hinging point; a second body support link having a first end hingedly connected to the bottom beam and a second end hingedly connected to the body support mattress support; a leg portion comprising a leg member and a leg member support, wherein the leg member support is connected to the body support mattress support, and wherein the leg member is hingedly connected to the leg member support at a hinging point at a first end of the leg member, wherein the first end of the leg member is opposite a second end of the leg member, the second end of the leg member comprising a foot stand for resting on a ground surface in a deployed state of the folding frame; a synchronization link having a first end hingedly connected to the leg member and a second end hingedly connected to the first body support link, wherein the synchronization link is connected to the leg member via a second hinging point at the first end of the leg member, wherein the second hinging point is positioned further away from the foot stand than the hinging point at which the leg member is hingedly connected to the leg member support.

2. The folding frame for a folding furniture according to claim 1, characterized in that, The synchronization link is connected to the first end of the first body support link at a first linking point, wherein the first body support link is connected to the body support mattress support at a second linking point, wherein the second linking point is positioned further away from the first end of the first body support link than the first linking point, and wherein the first linking point is positioned off-axis with respect to the second linking point and the first hinging point.

3. The folding frame for a folding furniture according to claim 1 or 2, characterized in that, The leg member support and the leg member are hingedly connected via their hinging points of connection to each other and via a slot-in-pin mechanism comprising a pin on one of the leg member support and the leg member and a slot on the other of the leg member support and the leg member, wherein the slot is in the shape of a circular arc, and wherein the pin protrudes through the slot and stands upright perpendicular to the plane of the slot.

4. The folding frame for folding furniture according to claim 1 or 2, characterized in that, The second head support link and the head support mattress support are hingedly connected at an eighth articulation point, wherein the eighth articulation point and the first articulation point are the same articulation point.

5. The folding frame for folding furniture according to claim 1 or 2, characterized in that, The second head support link and the first body support link are rigidly connected via one or more link fixation points.

6. The folding frame for folding furniture according to claim 1 or 2, characterized in that, The first head support link is hingedly connected to the bottom beam via a third articulation point, wherein the third articulation point is located at a first end of the bottom beam, and wherein the first head support link is hingedly connected to the head support mattress support via a fourth articulation point, wherein the fourth articulation point is located at a first end of the head support mattress support, wherein in the unfolded state of the foldable frame, the first end of the bottom beam and the first end of the head support mattress support are positioned distally relative to the body support mattress support.

7. The folding frame for folding furniture according to claim 1 or 2, characterized in that, The second head support link is hingedly connected to the bottom beam via a fifth articulation point at a second end of the bottom beam, wherein the first articulation point is located at a second end of the head support mattress support, and wherein in the unfolded state of the foldable frame, the second end of the bottom beam and the second end of the head support mattress support are positioned proximally relative to the body support mattress support.

8. The folding frame for folding furniture according to claim 1 or 2, characterized in that, The second body support link comprises an L-shaped swivel bar and an elongated steering bar, wherein the L-shaped swivel bar is hingedly connected to the bottom beam with a first end via a sixth articulation point, and wherein the elongated steering bar is hingedly connected to the body support mattress support with a first end via a seventh articulation point, and wherein the L-shaped swivel bar and the elongated steering bar are fixedly connected to each other at second ends of the elongated steering bar and the L-shaped swivel bar via one or more bar fixation points, wherein the elongated steering bar extends in the direction of elongation of the arm of the L-shaped swivel bar.

9. The folding frame for folding furniture according to claim 1 or 2, characterized in that, The foot member support is rigidly connected to the body support mattress support at two or more foot fixation points.

10. The folding frame for folding furniture according to claim 1 or 2, characterized in that, The body support mattress support is provided with one or more stop elements extending transversely and positioned such that when the head support mattress support and the body support mattress support are in line with each other in the unfolded state of the foldable frame, the first body support link rests against the one or more stop elements, and the one or more stop elements prevent further rotation of the first body support link.

11. The folding frame for folding furniture according to claim 1 or 2, characterized in that, The first head support link is L-shaped and comprises two arms extending from a central connection, wherein a first arm of the two arms terminates at the first end of the first head support link, wherein a second end of the first arm is located at the level of the central connection and comprises a third articulation point, through which the first head support link is articulately connected to the bottom beam, and wherein a second arm of the two arms is provided with a rigid stop element, wherein in the folded state of the foldable frame the rigid stop element rests on the first end of the bottom beam, which in the unfolded state of the foldable frame is positioned distally relative to the body support mattress holder.

12. The folding frame for folding furniture according to claim 1 or 2, characterized in that, The foldable frame further comprises a head support mattress frame for accommodating and supporting a mattress, which head support mattress frame is arranged on the head support mattress holder, and a body support mattress frame for accommodating and supporting a mattress, which body support mattress frame is arranged on the body support mattress holder.

13. The folding frame for folding furniture according to claim 1 or 2, characterized in that, The first body support link is connected to two lateral sides of the foldable frame via a coupling rod, which coupling rod is parallel to the plane defined by the bottom beam and perpendicular to the elongated head support side, wherein in the unfolded state of the foldable frame the coupling rod rests against the underside of the head support mattress holder.

14. The folding frame for folding furniture according to claim 1 or 2, characterized in that, One or more components of the foldable frame are connected on both sides in one piece.

15. The folding frame for folding furniture according to claim 1 or 2, characterized in that, The maximum height of the foldable frame in the folded state is 30 cm.

16. The folding frame for folding furniture according to claim 3, characterized in that, The pin is located on the leg member holder and the slot is located on the leg member.

17. The folding frame for folding furniture according to claim 5, characterized in that, One of the one or more link fixation points is the first articulation point.

18. The folding frame for folding furniture according to claim 11, wherein, The rigid stop element is rigidly connected to the first head support link at a stop fixation point at the end of the second arm of the two arms.

19. The folding frame for folding furniture according to claim 13, wherein, The coupling rod is rigidly connected to the first body support link via one or more link fixation points.

20. The folding frame for folding furniture according to claim 14, wherein, One or more components of the foldable frame are connected on both sides in one piece by separate connecting elements.

21. The folding frame for folding furniture according to claim 15, wherein, The maximum height of the foldable frame in the folded state is 25 cm.

22. A foldable piece of furniture comprising a seat portion, characterized in that The seat portion comprises a hollow shell, wherein the foldable frame for foldable furniture according to any one of claims 1 to 21 is fixed inside the hollow shell with the bottom beam.

23. The foldable furniture of claim 22, wherein, The foldable furniture is a sofa.

24. The foldable furniture of claim 22, wherein, The foldable furniture is a sofa bed.

25. The foldable furniture of claim 22, wherein, The foldable furniture further comprises a backrest portion. The foldable furniture further comprises a backrest portion.

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