Patent Application
20250235007
The invention relates to a folding framework for a piece of folding furniture such as a sofa bed, as well as a piece of folding furniture comprising this framework.
Such folding frameworks for a piece of folding furniture, in particular a sofa bed, have often been used in the prior art.
Such a folding framework is known from WO2004/086913 (WO '913). The framework according to WO '913 comprises two roto-translational couplings, which are connected at a first end to a body support coupling and at a second end are connected to two different base beams.
The framework according to WO '913 is disadvantageous as the two ends of the roto-translational couplings are connected vertically spaced on the two base beams mentioned. Such vertical spacing requires a framework that requires a substantial amount of (vertical) space for folding and unfolding. In addition, the inventors note that the shape and placement of the roto-translational couplings does not allow a smooth unfolding of the framework.
In addition, the framework from WO '913 has an additional disadvantage. In many situations, it happens that users sit on the side of the bed for a while when getting up. It is not comfortable here because of the high protruding couplings above the mattress surface.
The present invention aims to solve at least some of the above problems or drawbacks. The aim of the invention is to provide a method which eliminates those disadvantages.
In a first aspect, the present invention concerns a folding framework for a piece of folding furniture such as a sofa bed, according to claim 1. the framework comprising: a substantially rectangular head support mattress frame (3) comprising a mattress mounting surface; a substantially rectangular upper body support mattress frame (11) hingedly connected to said head support mattress frame (3); a substantially rectangular lower body support mattress frame (20), hingedly connected to the upper body support mattress frame (11); a first hinge (4) fixedly connected to the head support mattress frame (3) and hingedly connecting the head support mattress frame (3) to the upper body support mattress frame (11), preferably fixedly connected to the frontal side of the head support mattress frame (3); an elongated base beam (1) provided in a longitudinal axis of the framework in the unfolded state, and suitable for anchoring in and/or forming a housing of the piece of folding furniture; a head support coupling (2) having a first end hingedly connected to the first hinge (4) and having a second end hingedly connected to the head end of the base beam (1); a body support coupling (9) having a first end hingedly connected to the upper body support mattress frame (11); a front lever coupling (7) having a first end hingedly connected to a second end of the body support coupling (9), and having a second end hingedly connected to the foot end of the base beam (1); a rear lever coupling (8) having a first end hingedly connected to the second end of the body support coupling (9), and wherein the rear lever coupling (8) has a second end hingedly connected to the foot end of the base beam (1) at a position less frontally located than where the front lever coupling (7) is connected to the base beam (1); a synchronization coupling (6) having a first end hingedly connected to the first hinge (4) and a second end hingedly connected between the first and second ends of the head support coupling (9); a second hinge (15), with a first end hingedly attached to the upper body support mattress frame (11) and with a second end hingedly attached to the lower body support mattress frame (20); a pull lever (12), having a first end hingedly connected to the first end of the body support coupling (9) at a point located more extremally at the first end of the body support coupling (9) than where it is hingedly connected to the upper body support mattress frame (11), and having a second end hingedly connected to the second hinge (15) at a point spaced from the axis connecting the hinged connections of the second hinge (15) to the upper (11) and lower body support mattress frame (20); a locking coupling (13) having a first end hingedly connected to the upper body support mattress frame (11) at a point located outside the longitudinal axis of the upper body support mattress frame (11); a lever coupling (16) having a first end hingedly connected to a second end of the locking coupling (13); a foot section (19) having a first end hingedly connected to the lower body support mattress frame (20), and wherein the second end of the lever coupling (16) is hingedly connected to the foot section (19) at the first end thereof; and, a foot synchronization coupling (24), which at a first end is hingedly connected to the lower body support mattress frame (20) via a first coupling (25) and at a second end is hingedly connected via a second (18) and third coupling (23) at a shared point of the foot synchronization coupling (24), to the hinged connection between the foot section (19) and the lever coupling (16), and to the foot section (19) at a point other than the hinged connection between the foot section (19) and the lever coupling (16), respectively.
The framework is very advantageous because the framework is very compact when folded up and yet has a comfortable seat height; in addition, the compact framework allows the framework to be easily moved. It is also advantageous that the unfolded framework has its mattress surface high enough from the ground so that the framework has a comfortable seat height in a bed condition. This also provides enough space under the framework for the storage of the back support and seat cushions. As a result, these cushions do not need to be stored in a different place, thereby unnecessarily filling up valuable space.
In a second aspect, the invention relates to a piece of folding furniture such as a sofa bed, comprising the framework according to the first aspect, according to claim 15.
Unless otherwise defined, all terms used in the description of the invention, including technical and scientific terms, have the meanings as commonly understood by a person skilled in the art to which the invention pertains. For a better understanding of the description of the invention, the following terms are explained explicitly.
In this document, “a” and “the” refer to both the singular and the plural, unless the context presupposes otherwise. For example, “a segment” means one or more segments.
When the term “around” or “about” is used in this document with a measurable quantity, a parameter, a duration or moment, and the like, then variations are meant of approx. 20% or less, preferably approx. 10% or less, more preferably approx. 5% or less, even more preferably approx. 1% or less, and even more preferably approx. 0.1% or less than and of the quoted value, insofar as such variations are applicable in the described invention. However, it must be understood that the value of a quantity used where the term “about” or “around” is used, is itself specifically disclosed.
The terms “comprise,” “comprising,” “consist of,” “consisting of,” “provided with,” “include,” “including,” “contain,” “containing,” are synonyms and are inclusive or open terms that indicate the presence of what follows, and which do not exclude or prevent the presence of other components, characteristics, elements, members, steps, as known from or disclosed in the prior art.
‘Framework’ in the context of the present text is to be understood as an assembly of parts that serves as a supporting structure for further elements and/or structures. Such parts can be, for example, couplings, coupling pieces, brackets or frames. Such structures can be a sofa bed. Preferably, a framework is provided internally to such structures. Such a framework can also be provided externally to said structures. Such a frame can be provided both internally and externally to said structures.
“Coupling” is to be understood in the context of the present text as an element suitable for entering into a coupling or connection with another coupling, bracket and/or frame, etc. This can be done, for instance, by means of a simple opening in which the coupling and one of the aforementioned elements are anchored, for instance by means of a hook, screw or other coupling piece. ‘Beam’ should be understood in the context of the current text as a substantially beam-shaped framework element.
‘Pivotable’ or ‘hingeable’ should be understood in the context of the current text as rotatable about a support point. The support point can be a connection point between two couplings or between a coupling and another framework element.
“Longitudinal axis” should be understood within the context of the current text as a rectilinear axis parallel to a side of a surface or a rectilinear axis connecting two connection points.
“Longitudinal” should be understood in the context of the present text as a direction that is horizontal when the framework is placed on a horizontal surface. In essence, said direction is the direction in which the framework, i.e., the various mattress frames, is folded and/or unfolded.
Quoting numeric intervals by the endpoints includes all integers, fractions, and/or real numbers between the endpoints, including those endpoints.
In a first aspect, the invention relates to a folding framework suitable for a piece of folding furniture such as a sofa bed.
In a second aspect, the invention relates to a piece of folding furniture such as a sofa bed comprising the framework according to the first aspect. Preferably wherein the piece of folding furniture is a sofa bed, more preferably wherein the sofa bed comprises a seat, back support and mattress.
In what follows, both aspects of the present invention are discussed together. Any feature described herein may refer to any aspect, even when the feature is described in conjunction with a particular aspect of the present invention.
It will be apparent to one skilled in the art that any technical element described in accordance with the aspects of the invention can be provided in appropriate plurality without departing from the subject matter of the present invention. In particular, the head support coupling, the body support coupling as well as the lever couplings can be provided in two, three, four, five, six, seven, eight, nine or tenfold. Preferably, the head support coupling, the back support coupling and the body support coupling are provided in duplicate. Preferably, said couplings are provided in duplicate respectively on each (longitudinal) side in a direction perpendicular to the longitudinal direction of a framework.
It will be apparent to one skilled in the art that any technical element described in accordance with the aspects of the invention can be provided in appropriate plurality without departing from the subject matter of the present invention. In particular, the parts of the framework, such as the head support couplings, the body support couplings as well as the other couplings and parts, can be provided in multiples, for example double, triple, quadruple, quintuple, etc. Preferably, at least the head support couplings, the body support couplings, the body support mattress and head support mattress frames, and the couplings between them are provided in duplicate. Preferably, said parts are provided in duplicate respectively on each (longitudinal) side in a direction perpendicular to the longitudinal direction of a framework.
The term “head support mattress frame” and the like on the one hand, and “body support mattress frame” and the like do not imply any functional limitation in terms of length or function (that these exclusively support the head or body), and only serve to indicate which end of the framework is involved (head or foot). As visible in the figures, the two pieces are substantially the same size, which is more compact in the folded state.
A framework according to the invention has the option of being unfolded from a folded state to an unfolded state. In the unfolded state, the framework thus provides a mattress frame, suitable for receiving a mattress. Here it is possible to mount and/or attach the mattress to the mattress frame.
A folding framework according to the first aspect comprises:
In particular, the provision of the foot synchronization coupling and associated parts allows to better support the movement of the furthest protruding parts, which undergo a much greater moment of force. These are in particular the foot section and the lower body support mattress frame, which have a substantial weight, protrude far, and are connected to the base beams with several hinged couplings. By hinging the foot synchronization coupling to both the foot section and the lower body support mattress frame, it amplifies its movements without damaging or deforming anything. Additionally, this foot synchronization coupling is folded in within or possibly under the lower body support mattress frame when the framework comes into the folded state. On the one hand, this provides extra support for a cushion or (box spring) mattress that is present in the lower body support mattress frame in the folded state, but above all ensures that the framework is folded up just as compactly, despite the added foot synchronization coupling.
Due to the proposed configuration, during folding of the framework from the folded state, the synchronization coupling will unfold the head support mattress frame, wherein the synchronization coupling better supports the head support mattress frame with an unfolded framework. Such a coupling of the synchronization coupling is advantageous because in this way a force perpendicular to the head support mattress frame is distributed between the head support coupling and the synchronization coupling and the total force in the individual couplings is reduced.
Additionally, by hingedly connecting the locking coupling to the upper body support mattress frame at a point located at a distance from the longitudinal axis thereof, the moment of force exerted is greater, because the effective length of the arm of the force is thereby substantially increased. This makes it easier to unfold and fold the framework with less resistance and less force required.
In a preferred embodiment of the folded framework, the head support coupling is at an angle with respect to the base beam, directed towards the head support mattress frame. The relevant angle is at least 75°, preferably 80°, more preferably 82.5°. In addition, the head support mattress frame has a length of at least 450 mm, preferably 470 mm, preferably 485 mm. The body support coupling with an unfolded framework is at an angle relative to the base beam, directed away from the head support mattress frame, of at least 35°, preferably 42°, more preferably 48.5°.
To enable the unfolding of the framework from a folded state, the framework provides multiple sub-mattress frames, more specifically a substantially rectangular head support mattress frame and a substantially rectangular body support mattress frame. Both support mattress frames are hingedly connected to each other along a long side. The body support mattress frame is further divided into a substantially rectangular upper body support mattress frame and a substantially rectangular lower body support mattress frame. Both are indirectly hingedly connected to each other with a long side using a bridging coupling.
For placing a framework according to the present invention on a substrate, according to a simple embodiment this framework is provided with a base beam provided in a longitudinal direction of the framework in unfolded state. The base beam supports the head support mattress frame and the upper body support mattress frame by means of a head support coupling and a body support coupling. The head support coupling is herein hingedly connected to the head support mattress frame with a first side for support and with a second end hingedly connected to the base beam. In addition, the body support coupling is hingedly connected to the upper body support mattress frame with a first side for support and a second end is hingedly connected to the first end of the front and rear lever coupling. Thus, the front lever coupling is hingedly connected at a first end to a frontal side of the body support coupling, wherein a second end is hingedly connected to a frontal end of the base beam. The rear lever coupling is hingedly connected at a first end to a second end of the body support coupling, wherein a second end is hingedly connected to the base beam.
According to a preferred embodiment, the angle of the head support coupling relative to the base beam, with the framework in the unfolded state, is a maximum of 95°, preferably 90°, more preferably 85°.
According to a further embodiment, the length of the head support coupling is a maximum of 510 mm, preferably a maximum of 500 mm, more preferably a maximum of 490 mm.
According to an embodiment, the body support coupling is at an angle relative to the base beam when the framework is unfolded, directed away from the head support mattress frame, of at most 62°. Preferably a maximum of 55°, more preferably a maximum of 49°.
According to a preferred embodiment, the foot section has a length of at least 300 mm, preferably at least 330 mm, more preferably at least 360 mm.
According to a further embodiment, the foot section has a length of a maximum of 450 mm, preferably a maximum of 420 mm, more preferably a maximum of 390 mm.
According to a preferred embodiment, the framework further comprises a back support frame (21), rigidly connected to the foot section (19) at an angle between 60° and 120°, wherein the back support frame (21) in the folded state of the framework defines a smallest angle with respect to the lower body support mattress frame (20) of at least 60°, preferably at least 70°, more preferably at least 75°, and in the unfolded state of the framework defines a smallest angle with respect to the lower body support mattress frame (20) of at most 25°, preferably at most 20°, more preferably at most 15°.
The back support frame is suitable for receiving a back support cushion, wherein the back support cushion has the option of being attached to the back support frame by means of fastening means. In addition, the lower body support mattress frame comprises a seat mounting surface suitable for receiving a seat cushion. Like the back support cushion, the seat cushion has the ability to be secured by fastening means to the seat mounting surface. Both the seat mounting surface and the back support frame face outward when the framework is folded relative to the base beam.
The head support coupling, body support coupling and the foot section are the parts that support the various sub-mattress frames and keep them at a certain height from the ground. Thus, said parts ensure that all sub-mattress frames form a substantially rectangular flat mattress mounting surface when the framework is unfolded. The aforementioned angles and dimensions of the head support coupling, body support coupling and the foot section have the advantage that when the framework is unfolded, space is provided under the framework for the storage of the seat and back support cushion. The framework can thus easily be unfolded from a folded state without removing the seat and back support cushion. This has the additional advantage that such cushions do not take up valuable space and there is no need to look for a storage space.
According to a preferred embodiment, the bridging coupling has a length of at least 225 mm, preferably at least 230 mm, more preferably at least 235 mm.
According to a further embodiment, the bridging coupling has a length of at most 250 mm, preferably at most 245 mm, more preferably at most 240 mm.
The bridging coupling has a first end hingedly connected to a long side of the upper body support mattress frame and a second end hingedly connected to a long side of the lower body support mattress frame. The said bridging coupling mainly determines the seat height of the sofa bed when the framework is folded. For example, the framework has a seat height with respect to the ground, which is approximately 250 mm, preferably 260 mm, more preferably 270 mm.
Such a seat height of a sofa bed with a folded framework is very advantageous because it is a seat height that provides a good ergonomic sitting posture. The folded framework can provide a cushion of approximately 200 mm on the seat mounting surface. This gives the sofa a seat height of approximately 470 mm.
The advantage of the second hinge is the possibility of mounting the couplings more easily on the second hinge. This is possible because such connection points are located above or below the bridging coupling, preferably above the bridging coupling with respect to the folded framework. This makes the production process easier. An additional advantage of the second hinge and the provision of connection points above the bridging coupling is that connected couplings in a folded framework are located more internally in the folded framework. This means that fewer couplings protrude from the folded framework and it is not possible to get stuck on possible protruding couplings.
According to an embodiment, the framework further comprises a lever coupling having a first end hingedly connected to the first end of the body support coupling and having a second end hingedly connected to the second hinge. The lever coupling comprises an angle at a second end with the angle directed towards the base beam. Such an angle places the majority of the lever coupling closer to the body support mattress frame. However, this is advantageous because, when the framework is unfolded, the respective lever coupling protrudes less above the upper body support mattress frame. This makes it possible to sit more comfortably on the unfolded framework. In this way the framework is kept more compact in an unfolded state.
According to an embodiment, the framework comprises several transverse couplings, wherein the transverse couplings are connected transversely to the framework. In this way, said transverse couplings connect a plurality of couplings in the framework with each other. Preferably, the transverse coupling connects two sub-frameworks, each provided laterally to the mattress mounting surface. Such transverse couplings have the advantage of providing a sturdier structure in the framework.
According to a preferred embodiment, the framework comprises the aforementioned parts on both lateral sides, wherein one or more of the parts on both lateral sides are connected to each other via a transverse coupling. The parts on both lateral sides can be unitary, where the transverse coupling is part of the single-piece components, or these can be two (often symmetrical) components that are interconnected by one or more transverse couplings.
According to a preferred embodiment, the framework is further provided with a housing to which the base beams can be fixed and/or integrated (or even form a structural part thereof), in which the framework fits completely into the housing with its width and depth when folded. The housing further comprising, for example, one or more transverse beams, couplings, plates, etc., and/or one or more additional cross beams provided in a longitudinal direction of the framework. The housing may or may not be provided with a base; preferably a plurality of legs, wheels, etc.
An advantage of such a housing is that there are no protruding couplings when the framework is folded, one could bump into. Such a housing increases the safety of the framework when folded.
According to a preferred embodiment, the rear lever coupling is at least as long as the front lever coupling. This ensures that the body support coupling can be folded against or within the base beams in the folded state of the framework.
According to a preferred embodiment, the rear lever coupling has a longitudinal axis through the first connection point and the second connection point of the rear lever coupling approximately perpendicular to a longitudinal axis through the connection point of the first end of the rear lever coupling and the connection point of the first end of the front lever coupling, when the framework is in the unfolded state, where approximately perpendicular concerns an intermediate angle between 70° and 110°, more preferably between 80° and 100°, more preferably between 85° and 95°.
According to a preferred embodiment, the framework further comprises a bridging coupling, wherein the second hinge is fixedly coupled to the bridging coupling, wherein said bridging coupling extends between the lower and upper body support mattress frame at the top thereof, wherein the bridging coupling limits the rotation of the lower and upper body support mattress frame from a folded or semi-folded state to an unfolded state to a mutually parallel position in line with each other when the framework is unfolded.
According to a preferred embodiment, the lever coupling is hingedly connected at the first end to the bridging coupling, wherein the hinged connection between the lever coupling and the bridging coupling is located less extremally with respect to the first end of the lever coupling than the hinged connection between the lever coupling and the locking coupling.
According to a preferred embodiment, the foot synchronization coupling is kept substantially parallel with the lower body support mattress frame via the first, second and third couplings, for further strengthening and stability when unfolding and folding, as well as under load.
According to a preferred embodiment, the foot synchronization coupling is positioned in substantially the same transverse plane as the lower body support mattress frame when the framework is in a folded state, the transverse plane being substantially perpendicular to the lateral sides of the framework.
It can thus be deduced that the present invention comprises a very compact framework in the folded state, with a comfortable seat height. In addition, despite the compactly folded framework, the framework can still be folded in a very simple manner. When the framework is unfolded, the mattress mounting surface still stands high from the ground. This makes the framework in a sofa bed very comfortable and easy to fold open or fold closed, where one does not have to take off cushions for unfolding.
In what follows, the invention is described by means of non-limiting examples or figures illustrating the invention, which are not intended or should be interpreted as limiting the scope of the invention.
The invention will now be described in more detail with reference to the following non-limiting examples or figures.
In
Thus, the mattress mounting surface is divided into sub-mattress frames to enable folding and unfolding of the framework. The mattress mounting surface herein comprises a substantially rectangular head support mattress frame (3) and a body support mattress frame (11, 20). The body support mattress frame is further subdivided into a substantially rectangular upper body support mattress frame (11), a substantially rectangular lower body support mattress frame (20) and a bridging coupling (14). The head support mattress frame (3) is connected with a first side to a first side of the upper body support mattress frame (11) in hinge point (D). The upper body support mattress frame (11) is connected with a second side to a first end of the bridging coupling (14) in hinge point (M). Finally, the lower body support mattress frame (20) has a first side connected to a second end of the bridging coupling (14) in hinge point (Q).
It can also be seen that there is space for the seat and back support cushion between the back support frame (21) and the body support mattress frames (11, 20). The cushions then come to lie on top of each other and the back support frame (21) ensures that the relevant cushions are kept off the ground. This is very advantageous because the surface under the framework can be cleaned, while the cushions stored under the framework cannot get wet.
The head support mattress frame (3) comprises a first hinge (4) at the first end and the bridging coupling (14) comprises a second hinge (15) at the second end. Both hinges (4 and 15) are attached to the head support mattress frame (3) and bridging coupling (14), respectively, and cannot move freely. As previously mentioned, the mattress mounting surface is supported relative to the surface on which the framework is placed. The head support mattress frame (3) is supported by a head support coupling (2), wherein the head support coupling (2) is connected with a first end to the first hinge (4) in hinge point (B) and with a second end connected to the base beam (1) in hinge point (A). The upper body support mattress frame (11) is supported by a body support coupling (9), wherein the body support coupling (9) is connected at a first end approximately halfway up the upper body support mattress frame (11) in hinge point (E). The body support coupling (9) is connected at a second end to a front and rear lever coupling (7 and 7), which in turn are connected to the base beam (1). The lower body support mattress frame (20) is supported by a foot section (19), wherein the foot section is connected at a first end to the lower body support mattress frame (20) in hinge point (U). The foot section (9) rests with a second end on the surface on which the framework is placed, as shown in
In
By moving the back support frame (21) in the direction of the lower body support mattress frame (20), movement in direction (A-A), the framework can be unfolded. The framework further comprises a third coupling (23), a second coupling (18) and a lever coupling (16). The third coupling (23) is connected at a first end to the foot section (19) in the hinge point(S). The transverse coupling (23) is connected at a second end to a second end of the second coupling (18) in hinge point (R). In addition, the second coupling (18) is connected with a first end to the lower body support mattress framework (20) in the hinge point (V). At the second end of the third coupling (23), a transverse coupling can be connected, with the respective transverse coupling located below the lower body support mattress frame (20).
By moving the back support frame (21) in direction (A-A), the foot section (19) will pivot at point (U) relative to the lower body support mattress frame (20), in a direction away from the base beam (1). As a result, the foot section (19) will move the third coupling (23) upward through the hinge point(S), which in turn will cause the second coupling (18) to pivot in point (V). This will cause the transverse coupling to move towards the bridging coupling (14) to a state wherein the transverse coupling contacts the lower body support mattress frame (20) approximately halfway. As a result, the foot section (19) has a start and end position and the foot section cannot move freely.
By pivoting the foot section (19) at point (U), it will move the lever coupling (16) in a direction away from the base beam (1). This is because the lever coupling (16) is connected at a first end to the foot section (19) in hinge point (T), as shown in
The framework further comprises a locking coupling (13) and a pull lever (12). The lever coupling (16) is connected to the second hinge (15) in hinge point (P) before the second end. Furthermore, the lever link (16) is connected with the second end to the first end of the locking coupling (13) in hinge point (N). The locking coupling (13) is connected with a second end to the upper body support mattress frame (11) in hinge point (L). The pull lever (12) is connected with a first end to the second hinge (15) in hinge point (O), wherein the second end is connected to the first end of the body support coupling (9) in the hinge point (K).
By moving the lever coupling (16) away from the base beam (1), as mentioned above, the lever coupling will pivot in point (P). This will cause the second end of the lever coupling (16) to move towards the base beam (1). The second end of the lever coupling (16) will exert a pushing force on the locking coupling (13), which in turn continues this pushing force on the upper body support mattress frame (11). This will cause the bridging coupling (14) to move in a direction away from the head support mattress frame (3). As can be seen in
By moving the bridging coupling (14) away from the head support mattress frame (3), the bridging coupling (14) will exert a tractive force on the pull lever (12) by means of the second hinge (15). The pull lever (12) will transfer this tractive force to the first end of the body support coupling (9). This will cause the body support coupling (9) to pivot around the point (E), wherein the second end of the body support coupling (9) moves towards the head support mattress frame (3).
The frame further comprises a front lever clutch (7), a rear lever clutch (8) and a synchronization clutch (6). The second end of the body support coupling (9) is connected to a first end of the front lever coupling (7) in hinge point (J). In addition, the second end of the front lever coupling (7) is connected to the frontal end of the base beam (1) in hinge point (I). Thus, the rear lever coupling (8) is connected at a first end to the second end of the body support coupling (9) in hinge point (G). The second end of the rear lever coupling (8) is connected to the base beam (1) in hinge point (H). The synchronization coupling (6) is connected with a second end to the body support coupling (9) in the hinge point (F) and with a first end connected to the first hinge in the hinge point (C).
By moving the body support coupling (9) towards the head support mattress frame (3), it will, due to the coupling at the front and rear lever coupling (7, 8), move the lower and upper body support mattress frame (20, 11) upwards. The body support coupling (9) pivots in point (J), with the front lever coupling (7) moving towards the head support mattress frame (3). This moves the rear lever coupling (8) away from the head support mattress frame (3) and moves the body support coupling (9) up, away from the base beam (1), as shown in
The upper body mattress frame (11) pulls on the first side of the head support mattress frame (3) at point (D) in a direction away from the head support mattress frame (3). This while the synchronization coupling (6) pushes on the first hinge in the direction of the head support mattress frame (3), causing the head support mattress frame (3) to fold open relative to the upper body support mattress frame (11). Because the head support coupling (2) is connected to the base beam (1) and the first hinge (4), the head support mattress frame will hinge in point (B). Because the framework, as previously mentioned, moves in a direction away from the head support mattress frame (3), the head support mattress frame (3) will move upwards, in a direction away from the base beam (3), as shown in
As mentioned earlier, the description above can also be reversed to fold the framework.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2024/5040 | Jan 2024 | BE | national |
