Extendable upholstered furniture

Abstract

Extendable upholstered furniture (100) which can be motor-transformed into a lying position (A) or a sitting position (B), the upholstered furniture (100) comprising: - an engine (10), - a stationary base frame (20) with at least two (essentially horizontally extending) stabilizing guides (25), - a backrest (30) with a storage space (35), - at least one seat element (40), - at least one head element (50) with at least two stabilizing elements (50.1), wherein the seat element (40) and / or the head element (50) can be displaced horizontally forwards and backwards relative to the base frame (20) along the at least two stabilizing guides (25) by the motor (10), wherein the seat element (40) and the head element (50) are coupled to one another by a joint mechanism (60) and are forcibly adjustable, wherein in the lying position (A) the seat element (40) and the head element (50) together form a substantially common flat lying surface, wherein in the sitting position (B) only the seat element (40) forms a substantially flat seat surface, and in the sitting position (B) the head element (50) can be stowed in a substantially vertical position (V) within the stowage space (35) of the backrest (30), wherein a rotatable lifting and stowing mechanism (90) is provided for lifting the head element (50), in particular from the horizontal position (V), from the stabilising guides (25) and for stowing the head element (50) in the stowage space (35), wherein the rotatable lifting and stowing mechanism (90) comprises a first rotating lever (91) and a second rotating lever (92), wherein preferably the two rotating levers (91, 92) lift the head element (50) from the horizontal position (H) into the vertical position and the head element (50) cooperates exclusively with the two rotating levers (91, 92) into the vertical position (V).

Description

[0001] The present invention relates to an extendable piece of upholstered furniture which can be motor-transformed into a lying position or a sitting position according to the present claims.

[0002] A wide variety of upholstered furniture designs are already available in the state of the art. In particular, loungers and sleeping furniture that can be manually or motorically converted into seating, or vice versa, are well known. Such convertible upholstered furniture represents an extremely practical solution for any home or room due to its versatility and is therefore highly sought after.

[0003] There are various solutions available in the state of the art for converting such upholstered furniture.

[0004] Most convertible upholstered furniture usually has a hinged, tiltable and / or movable upper part and a stationary lower part, whereby the upper part usually forms a lying or sitting surface and can be folded out, tilted or moved relative to the stationary lower part.

[0005] The major problem with currently available convertible upholstered furniture is that it has a mechanically very disadvantageous conversion mechanism. This major problem is primarily due to the fact that the different kinematic movement sequences, especially the horizontal and vertical movement sequences, are not decoupled from each other in the conversion mechanism.

[0006] In other words, the horizontal and vertical movement sequences in the currently known convertible upholstered furniture are not functionally separated from each other, but are carried out by one and the same conversion mechanism.

[0007] The horizontal and vertical movement sequences are primarily realized via two lateral guides. The two lateral guides are located on the edge of the upper part of the lower part. To achieve the relative movement between the movable upper part and the stationary lower part, rollers are typically provided on the underside of the movable upper part, which can be moved along the two guides located laterally on the upper part of the lower part.

[0008] The undivided execution of the different kinematic movement sequences, in particular the horizontal and vertical movement sequences, via the same two lateral guides means that a great deal of skill, time and muscle power or motor power is required during the conversion, in particular when transferring from a lying position to a sitting position or vice versa from a sitting position to a lying position, since the two lateral guides have to absorb both the complete dead weight of the movable upper part and also all the loads that are exerted on the lying or sitting surface of the movable upper part, in particular the body weight of the seated or lying person.

[0009] In addition, the two lateral guides are often very fragile, so that the two lateral guides, especially during frequent conversion, bend or become damaged due to the high stress caused by the simultaneous or undivided different kinematic movement sequences.

[0010] The bending or damage to the two side guides severely impairs or even blocks the running of the casters, resulting in jamming and a significant amount of noise, which is perceived as very annoying by the customer. However, a much more technically problematic issue is that the upholstered furniture can no longer remain firmly in its reclining or sitting position.

[0011] In summary, it can be stated that due to the unseparated execution of the different kinematic movement sequences, in particular the horizontal and vertical movement sequences, by only two lateral guides, the technical functionality can no longer be guaranteed in the event of frequent conversion.

[0012] It is therefore an object of the present invention to at least partially remedy the above-described disadvantages of a convertible upholstered piece of furniture. In particular, it is an object of the present invention to provide an improved convertible upholstered piece of furniture that, even after frequent conversion, can be converted from a reclining position to a sitting position or vice versa, more reliably, quietly, more quickly, more comfortably, and, above all, more efficiently than the prior art.

[0013] The above object is achieved by an extendable upholstered furniture having the features of claim 1.

[0014] Further features and details of the invention emerge from the subclaims, the description and the drawings.

[0015] According to the invention, the object is achieved by an extendable upholstered furniture which can be converted into a lying position or a sitting position by means of a motor.

[0016] The extendable upholstered furniture includes: - an engine, - a stationary base frame with at least two (essentially horizontal) stabilising guides, - a backrest with a storage space, - at least one seating element, - at least one head element with at least two stabilizing elements, wherein the seat element and / or the head element can be displaced horizontally forwards and backwards relative to the base frame along the at least two stabilizing guides by the motor, wherein the seat element and the head element are coupled to each other by a joint mechanism and are forcibly adjustable, wherein in the lying position (A) the seat element and the head element together form a substantially common flat lying surface, wherein in the sitting position (B) only the seat element forms a substantially flat seat surface, and in the sitting position (B) the head element can be stowed in a substantially vertical position (V) within the stowage space of the backrest, wherein a rotatable lifting and stowing mechanism is provided for lifting the head element, in particular from the horizontal position (V), from the stabilising guides and for stowing the head element in the stowage space, wherein the rotatable lifting and stowing mechanism comprises a first rotating lever and a second rotating lever, wherein preferably the two rotating levers lift the head element from the horizontal position (H) into the vertical position and the head element cooperates exclusively with the two rotating levers into the vertical position (V).

[0017] Because the head element is not permanently connected (meaning mechanically connected) to the rotating lifting and stowing mechanism, the upholstered furniture can be adjusted easily and with minimal effort. The lifting and stowing mechanism only interacts with the head element when the head element needs to be lifted in order to be moved toward its vertical position (in the backrest's storage space). During this lifting function, the two rotating levers move from a horizontal to a substantially vertical position. When lowering the head element (from the vertical to the horizontal position), the rotating levers perform the reverse movement, namely from the vertical to the horizontal position.

[0018] The vertical position V of the head element is understood to be a position that differs significantly from the horizontal position H in order to accommodate the head element in the storage space of the backrest. This definition also applies to the vertical position of the two rotating levers, which is indicated at the lowest Fig. 5 is clearly visible.

[0019] The extendable upholstered furniture can advantageously comprise at least one of the following features: - the stationary base frame with at least two upper stabilising guides and at least two lower stabilising guides, wherein preferably the at least two upper stabilizing guides are open and the at least two lower stabilizing guides are closed, wherein the at least two upper stabilizing guides and the at least two lower stabilizing guides extend substantially horizontally, wherein preferably the at least two upper stabilizing guides are provided on a lateral upper side of the base frame and the at least two lower stabilizing guides are provided on a lateral inner side of the base frame, - the seat element interacts with at least two lower stabilising elements, - the head element interacts with the at least two upper stabilising elements, wherein preferably the at least two upper stabilising elements are each designed to be rotatable, wherein the seat element and / or the head element can be displaced horizontally forwards and backwards relative to the base frame along the at least two upper stabilizing guides and the at least two lower stabilizing guides by the motor, wherein the rotatable lifting and stowing mechanism is provided for lifting the head element from the at least two upper stabilizing guides and for stowing the head element in the stowage space, wherein the rotatable lifting and stowing mechanism comprises a first rotating lever and a second rotating lever, wherein the first rotating lever and the second rotating lever are each provided on a lateral inner side of the base frame and are each decoupled from the at least two upper stabilizing guides, wherein the first rotating lever and the second rotating lever each have a closed driver guide, within which an upper stabilizing element of the head element can be guided.

[0020] Thus, a convertible, in particular motor-driven, upholstered furniture item is provided, which can be converted into a reclining or sitting position. In other words, the upholstered furniture item according to the invention can be adapted to various needs and thus used multifunctionally, so that the upholstered furniture item according to the invention can, in particular, provide a reclining or sleeping option, or even a seating option.

[0021] The core idea of ​​the invention is to functionally separate or decouple the different kinematic movement sequences, in particular the horizontal movement sequence and the vertical movement sequence, which determine the conversion mechanism, in order to ensure a significant minimization of forces.

[0022] The horizontal movement sequence describes in particular a movement in which all points of the seat element and / or the head element experience essentially the same translational horizontal displacement relative to the base frame.

[0023] For this purpose, the invention provides that the base frame has at least two upper stabilizing guides and at least two lower stabilizing guides. The at least two upper stabilizing guides are open and the at least two lower stabilizing guides are closed. The at least two upper stabilizing guides and the at least two lower stabilizing guides run essentially horizontally, with the at least two upper stabilizing guides being provided on a lateral upper side of the base frame and the at least two lower stabilizing guides being provided on a lateral inner side of the base frame. The seat element and / or the head element can be displaced horizontally back and forth relative to the base frame along the at least two upper stabilizing guides and the at least two lower stabilizing guides by the motor.

[0024] In this way, the translational, in particular horizontal, displacement of the seat element and / or the head element relative to the base frame can be drastically improved, in contrast to the prior art, by further breaking down the horizontal movement sequence.

[0025] In other words, not only are the horizontal and vertical movement sequences decoupled from each other, but the horizontal movement sequence itself is also further broken down into two subordinate, separate horizontal movement sequences, so that a single horizontal movement sequence is provided for the seat element and the head element.

[0026] In other words, separate stabilization guides are provided for the seat element and the head element, with the seat element being horizontally displaceable forwards and backwards along the at least two lower stabilization guides, and the head element being horizontally displaceable along the at least two upper stabilization guides, so that the forces that arise can be better distributed. The separate provision of the upper and lower stabilization guides offers the technical advantage that they can be flexibly dimensioned, designed, and configured differently, in particular independently of one another, depending on the forces that arise.

[0027] For example, it is conceivable that the at least two lower stabilizing guides are longer, larger and / or more robust and made of a different material than the at least two upper stabilizing guides, since the lower stabilizing guides in particular absorb the entire dead weight of the comparatively larger and heavier seat element as well as all additional loads exerted on the lying or sitting surface of the seat element, in particular the body weight of the seated or lying person.

[0028] In other words, this takes into account the fact that the upper and lower stabilizing guides are subjected to different loads, so that even after frequent conversion, the stabilizing guides no longer bend or become damaged as in the prior art, thus ensuring the technical functionality of the upholstered furniture according to the invention over a long period of time. The separate provision of the upper and lower stabilizing guides brings with it the further technical advantage that, in the event of maintenance, the stabilizing guides can be replaced independently of one another. Individual defective stabilizing guides can be replaced easily and cost-effectively without affecting the other stabilizing guides.

[0029] The open design of the at least two upper stabilizing guides has the technical advantage that it is possible to lift the head element from the at least two upper stabilizing guides, in particular to stow the head element in the storage space. Lifting can be understood as meaning that the head element is either completely spaced from the at least two upper stabilizing guides and no longer touches them, or is partially spaced from the at least two upper stabilizing guides and continues to be partially guided on the surface of the upper stabilizing guides.

[0030] The closed design of the at least two lower stabilizing guides has the technical advantage that the seat element is guided within the lower stabilizing guides and is thereby in particular precisely guided, so that tilting and / or disengagement, ie displacement of the seat element relative to the base frame transverse to the direction of travel of the lower stabilizing guides, is excluded.

[0031] The vertical movement sequence describes, in particular, a movement in which all points of the head element alone can be displaced forwards and backwards around a fictitious turning point from a substantially horizontal position to a substantially vertical position. The vertical movement sequence describes, in particular, a movement for lifting the head element from the at least two upper stabilizing guides and for stowing the head element in a storage space of the backrest.

[0032] For this purpose, the invention provides an additional and separate rotatable lifting and stowing mechanism, wherein the rotatable lifting and stowing mechanism comprises a first rotating lever and a second rotating lever, wherein the first rotating lever and the second rotating lever are each provided on a lateral inner side of the base frame and are each decoupled from the at least two upper stabilizing guides. The first rotating lever and the second rotating lever each have a closed driver guide, within which an upper stabilizing element of the head element can be guided.

[0033] The essential technical advantage of the upholstered furniture according to the invention is that, due to the deliberate and targeted separation or decoupling of the horizontal movement sequence and the vertical movement sequence from one another, when converting the upholstered furniture according to the invention, in particular when transferring from a lying position to a sitting position or vice versa from a sitting position to a lying position, in contrast to the prior art, much less dexterity, time and muscle power or motor power is required, since the forces occurring during the conversion are broken down into horizontal and vertical force components, which can now be absorbed separately on the one hand by the at least two upper stabilizing guides or the at least two lower stabilizing guides and on the other hand by the additional and separate rotatable lifting and stowing mechanism according to the invention.

[0034] This ensures that the stabilizing guides no longer bend or become damaged even after frequent conversion, so that the technical functionality of the upholstered furniture according to the invention can be guaranteed even over a long period of time.

[0035] By decoupling the horizontal and vertical movement sequences, the running performance of the casters is also significantly improved, as they are no longer blocked, thus preventing jamming. This improved running performance, in turn, leads to a drastic reduction in noise generation, which is perceived as very positive by the customer. Furthermore, by decoupling the horizontal and vertical movement sequences, it can be ensured that the upholstered furniture according to the invention can now remain firmly in its reclining or sitting position.

[0036] The base frame is preferably box-shaped, in particular as a base box with a hollow space, and has a first end and a second end, wherein the stabilizing guides each extend from the first end to a point which is arranged at a distance from the second end. According to the invention, it is explicitly provided that the at least two upper stabilizing guides and the at least two lower stabilizing guides serve to stabilize the seat element and / or the head element and exclusively to carry out the horizontal movement sequence, in particular for the uniform translational, essentially horizontal displacement of the seat element and / or the head element relative to the base frame. A vertical movement sequence through the at least two upper stabilizing guides orThe at least two lower stabilizing guides are deliberately and deliberately not provided and not desired. The at least two upper stabilizing guides and the at least two lower stabilizing guides are essentially each provided laterally, in particular at the edges, of the base frame.

[0037] The rotatable lifting and stowing mechanism according to the invention is arranged such that the first rotating lever and the second rotating lever are each arranged on a lateral inner side of the base frame, with a closed driver guide each located substantially at the same height as the at least two upper stabilizing guides. The first rotating lever and the second rotating lever are each decoupled from the at least two upper stabilizing guides. In other words, the rotatable lifting and stowing mechanism according to the invention is arranged substantially at the same height as the at least two upper stabilizing guides.

[0038] Preferably, a closed driver guide together with a respective upper stabilizing guide each form a common interrupted guide on a lateral inner side of the base frame. The common interrupted guide is to be understood as meaning that the guide path for carrying out the horizontal movement sequence, in particular a movement in which all points of the seat element and / or the head element experience essentially the same translational horizontal displacement relative to the base frame, is interrupted or severed at least at one point.In other words, the common interrupted guide is formed from separate, in particular two decoupled, guides, namely a closed driver guide of a rotating lever and an upper stabilizing guide, so that the common interrupted guide describes, in particular, a guide structure in which two discontinuous or separate individual guides are arranged in such a way that they form a functional, but interrupted guide line. In other words, the common interrupted guide describes a two-point guide in which two independent and decoupled guides work together functionally to ensure precise alignment of a common guide line for executing a linear movement.This makes it possible to realize that the different kinematic movement sequences, in particular the horizontal movement sequence and the vertical movement sequence, which determine the conversion mechanism, can be functionally separated and controlled from one another in order to ensure a significant minimization of forces.

[0039] Preferably, each closed driver guide is curved, in particular U-shaped, and has a stop that can be struck by an upper stabilizing element of the head element when a predetermined position of the head element is reached. The U-shaped design of the closed driver guide has the technical advantage that the upper stabilizing element of the head element is precisely guided within the closed driver guide, thus preventing tilting and / or disengagement, i.e., displacement of the head element relative to the base frame transverse to the direction of travel of the closed driver guide.The stop of the closed driver guide, which can be stopped by the upper stabilizing element of the head element when a predetermined position is reached, is used in particular for docking and rotating the rotating lever before the head element can lift off the upper stabilizing guides. The U-shaped design of the closed driver guide, in particular, ensures a seamless transition of the horizontal movement sequence of the head element between the two independent and decoupled guides along the common interrupted guide line. In other words, the U-shaped design of the closed driver guide enables a precise and harmonious, in particular decoupled, horizontal movement sequence, while at the same time avoiding abrupt changes of direction, abrupt stops or starts, and above all, height shifts.It is conceivable that the closed driver guide has a different curved shape, which is suitable for enabling a smooth transition of the horizontal movement of the head element between the two independent and decoupled guides along the common interrupted guide line without any vertical displacement. It is also conceivable that the closed driver guide has a square design and / or comprises a rail system.

[0040] Preferably, the first rotating lever and the second rotating lever each have a rotating mechanism by means of which the closed driver guide can be rotated from a substantially horizontal orientation into a substantially vertical orientation about a rotation point. Due to the rotating mechanism of the two rotating levers, the rotatable lifting and stowing mechanism according to the invention is based on an automatically executing linear rotation movement concept, which can independently trigger a specific function as soon as the stop of the closed driver guide is struck by the upper stabilizing element of the head element. In other words, the rotatable lifting and stowing mechanism according to the invention combines a linear movement and a rotational movement with a defined limiting point, i.e. the stop, in order to automatically and independently trigger the vertical movement sequence.In other words, the rotatable lifting and stowing mechanism according to the invention can independently trigger a vertical movement sequence with a movement resulting from rising, twisting, folding, tilting, turning, inclining or a combination thereof.

[0041] The rotating mechanism of the two rotating levers is based at least on the design principle that a continuous or intermittent linear rotary movement or pure rotary movement of the two rotating levers can be carried out around a fixed axis, in particular a rotation point. The rotating mechanism of the two rotating levers can each comprise at least one technical system or one technical component that enables and / or independently generates a rotating movement, wherein the continuous or intermittent linear rotary movement or the pure rotary movement of the two rotating levers can be carried out both directly and indirectly. The rotation point of the rotating mechanism can lie on a fixed or moving axis. Preferably, the rotating mechanism comprises at least one rotary joint, hinge joint, ball joint, egg joint, saddle joint, or rotary hinge joint.

[0042] Preferably, the respective rotation point of the rotating mechanism can be arranged at or below the horizontal height of the seat element (in use) (see e.g. Fig. 4 and Fig. 5). This allows the lifting and stowing mechanism to easily lift the head element and simultaneously hold it in the carrier guide (due to the downward force of gravity).

[0043] Preferably, the first rotating lever and the second rotating lever each have rounded and / or beveled edges in the area of ​​the rotating mechanism. The rounded and / or beveled edges primarily enable a small radius of movement of the two rotating levers, so that the two rotating levers can each be closely adapted to the surrounding components without being damaged. In other words, the rounded and / or beveled edges enable a space-saving, in particular compact, design of the two rotating levers, which would otherwise require a larger installation space or tolerance range in order to move freely or rotate unhindered. The rounded and / or beveled edges also make it possible to reduce the material thickness of the two rotating levers because stress peaks are avoided, whereby the two rotating levers can be designed even more compactly overall.Preferably, the edges form a semicircle, full circle or polygon, in particular an octagon, around the rotating mechanism.

[0044] According to the invention, it is explicitly provided that the first rotating lever and the second rotating lever each have a closed driver guide, within which an upper stabilizing element of the head element can be guided. In order to ensure that the upper stabilizing elements of the head element do not become wedged in the closed driver guide of the two rotating levers, in particular when the head element is lifted off the at least two upper stabilizing guides and when the head element is stowed in the stowage space, and can follow the linear rotary movement of the two rotating levers, it is preferably provided that the at least two upper stabilizing elements of the head element each have a rotary movement mechanism, by means of which a stabilizing element can be guided not only linearly but also rotary-movably within the closed driver guide.Preferably, the rotary movement mechanism comprises at least one rotary joint, hinge joint, ball joint, egg joint, saddle joint or rotary hinge joint.

[0045] Preferably, the at least two upper stabilizing elements of the head element each have a curved geometric shape in some areas, which essentially corresponds to the geometric shape of the contact area of ​​the stop of the closed driver guide of the two rotating levers. As a result, the two upper stabilizing elements of the head element can rest flat against the stop when docking in order to be able to trigger the vertical movement sequence precisely and with less effort. It is conceivable for the two upper stabilizing elements of the head element to each have a different, in particular constant, shape. For example, it is conceivable for the two upper stabilizing elements of the head element to each be angular, in particular square or rectangular, spherical, or cylindrical.

[0046] Preferably, the two upper stabilizing elements of the head element are designed as a sliding element or as a roller. The two upper stabilizing elements of the head element are specifically designed to control the linear rotary movement of the two rotating levers and thus the vertical movement sequence. In other words, the two upper stabilizing elements of the head element can ensure a precise linear rotary movement of the two rotating levers, which is of great technical importance for precise and comfortable retraction and extension of the upholstered furniture according to the invention, in particular for transferring from a reclining position to a sitting position or vice versa from a sitting position to a reclining position.The two upper stabilizing elements of the head element are advantageously made of a robust material such as hardened steel or high-strength plastic, so that high loads can be absorbed, in particular carried, by the two upper stabilizing elements of the head element. In other words, the two upper stabilizing elements of the head element have a very high load-bearing capacity. In particular, when the guide element is designed as a roller, preferably a roller with ball or needle bearings, more preferably a rubberized roller, shocks and vibrations can be cushioned or dampened by the guide element, so that the two upper stabilizing elements of the head element have excellent running properties, while noise and sound development is reduced or avoided. Furthermore, when designed as a roller, the high loads can be distributed relatively evenly in the closed driver guide.It is conceivable that the head element has a plurality of upper stabilizing elements. It is conceivable that the plurality of upper stabilizing elements of the head element are formed in multiple parts and have a plurality of components, in particular a plurality of rollers and / or sliding elements, wherein the components can be arranged parallel, in series, or offset from one another.

[0047] The sliding element is preferably designed as a sliding roller, a sliding block or a fleece element. Sliding rollers are particularly characterized by the fact that they can both roll and slide. The combination of rolling and sliding reduces resistance, which leads to smoother movement within the closed driver guide of the two rotating levers. Sliding rollers can also absorb or carry very high loads and distribute these evenly within the closed driver guide. Sliding blocks are characterized by even smoother running. In other words, the design of the upper stabilizing elements as a sliding block can ensure even more smooth and low-vibration, and in particular very quiet, movement within the closed driver guide of the two rotating levers. Fleece elements have a special material structure and / orThe fabric structure has a particularly dampening effect, which can absorb shocks and vibrations even better, thus ensuring even smoother running. Furthermore, nonwoven elements are very cost-effective and very easy to install. It is conceivable that the nonwoven elements are attached to the head element by form and / or force fit, for example, using rivets, staples, screws, or even by a material bond, for example, by adhesive bonding.

[0048] Preferably, the first rotating lever and the second rotating lever are each made of plastic, metal, wood or similar. It is conceivable that the width of the closed driver guide corresponds to the width or substantially to the width of the upper stabilizing elements of the head element. It is conceivable that the width of the closed driver guide is substantially, preferably twice, particularly preferably three times, as wide as the width of the upper stabilizing elements of the head element. It is conceivable that the closed driver guide is half-open or open in certain regions, in particular in the form of a guide strip. It is conceivable that the closed driver guide extends over the entire length of the two rotating levers or is only provided in certain regions in a front region of the two rotating levers.

[0049] Preferably, the closed driver guides each have a coating. The closed driver guides of the two rotating levers each have a support surface on which the two upper stabilizing elements of the head element can rest and move. The support surfaces of the closed driver guides serve as a rolling or sliding surface and, at the same time, as supports for load absorption, which are exerted during the vertical movement sequence or during the transfer from a lying position to a sitting position or vice versa from a sitting position to a lying position. The support surfaces of the closed driver guides can be made of the same material as the two rotating levers. It is therefore conceivable that the support surfaces of the closed driver guides are each made of plastic, metal, wood or similar.In particular, the design of the support surfaces made of wood or metal can provide a guide surface that is highly resistant to abrasion. In other words, the support surfaces are very stable and dimensionally stable due to the high rigidity and strength of the wood or metal, so that the support surfaces do not deform and thus do not negatively affect the vertical movement sequence in any way. The design of the support surfaces made of plastic has the advantage of further reducing frictional resistance, as plastic has natural sliding properties. Furthermore, plastic is insensitive to dust, dirt, and moisture, which can accumulate, especially over longer periods of time. In addition, plastic is significantly cheaper to produce and easier to adapt to the geometry of the closed driver guides of the two rotating levers.

[0050] The coating can, in particular, be a low-friction coating. This type of low-friction coating can further drastically reduce the frictional resistance between the two upper stabilizing elements of the head element and the contact surfaces of the closed driver guides, ensuring a virtually frictionless and therefore highly energy-efficient vertical movement sequence with excellent rolling behavior. Due to the extremely low frictional resistance, optimal contact surface properties prevail, resulting in virtually no wear between the two upper stabilizing elements of the head element and the contact surfaces of the closed driver guides.This extends both the service life of the two upper stabilizing elements of the head element and the service life of the support surfaces, so that the technical functionality of the upholstered furniture according to the invention can be guaranteed over a long period of time.

[0051] The base frame and the backrest basically form a unit, whereby the unit can be constructed in one piece or in several parts. A one-piece unit can be understood in such a way that the base frame and the backrest are formed from a single continuous component, whereas a multi-part unit is characterized in that the base frame and the backrest are each formed from several individual structural elements which can be firmly and / or detachably connected to one another. Preferably, the base frame and the backrest form a unit with a rear wall. The rear wall serves as a boundary surface for the storage space of the backrest. It is conceivable that the rear wall is interrupted, in particular from several individual walls or individual strips, so that further weight and cost savings can be achieved. It is conceivable that the rear wall is made up of three individual walls or strips, for example.three individual strips. Thus, two individual walls or two individual strips can be provided on each side, in particular at the edge, and one individual wall or one individual strip in the middle. The plurality of individual walls or individual strips can have the same geometric dimensions and material properties or can be designed differently independently of one another. For example, it is conceivable that the two lateral, in particular edge, individual walls or strips are thinner than the central individual wall or individual strip. It is conceivable that the rear wall has a plurality of individual cross struts in order to further increase the strength and rigidity of the rear wall. The plurality of individual cross struts can have the same geometric dimensions and material properties or can be designed differently independently of one another.It is conceivable that the multiple individual walls and / or the individual cross braces are preferably each made of wood. However, it is also conceivable that the multiple individual walls and / or the individual cross braces are each made of plastic, metal, or similar materials. To completely close the rear wall and prevent dirt from accumulating in the storage space, a panel, particularly a board-like panel, can be provided.

[0052] The seat element preferably has support rollers. The seat element preferably has at least two support rollers, which are each provided laterally in a front region of the seat element. The support rollers can be understood as floor rollers by means of which the seat element is supported on the floor, in particular in a rollable manner. In other words, the support rollers, preferably small load-bearing rollers, which are specifically provided to support the seat element on the floor, in particular to simplify a horizontal forward and backward displacement of the seat element relative to the base frame during transfer from a lying position to a sitting position or vice versa from a sitting position to a lying position. In other words, the support rollers enable a simplified extension and retraction of the seat element relative to the base frame.It is conceivable that the support castors each have a braking mechanism to block the castors in the lying or sitting position. It is conceivable that the braking mechanism can be activated mechanically by a lever with the foot or by hand. It is conceivable that the braking mechanism can be activated electrically by sensors or a switch, automatically or semi-automatically. It is conceivable that the braking mechanism is based on the functional principle of a total brake, according to which the braking mechanism blocks both the rotation of the individual support castors and rotation of the support castor housing. It is conceivable that the braking mechanism is based on the functional principle of a wheel brake, according to which only the rotation of the individual support castors is blocked, but rotation of the support castor housing, in particular the roller holder, is permitted.In other words, the braking mechanism can prevent the support rollers or an individual support roller from unintentionally moving or rolling in a certain direction, thereby leading to instability of the upholstered furniture according to the invention. In other words, the braking mechanism can additionally ensure that the upholstered furniture according to the invention remains fixed in its lying or sitting position. However, it is also conceivable for the braking mechanism to be based on the functional principle of a directional brake, according to which the rotation of the individual support rollers is permitted, but rotation of the housing, in particular the roller holder, of the support rollers is blocked, so that the support rollers can execute a targeted, controlled movement in a certain direction, preferably only straight ahead in the longitudinal direction of the seat element or parallel to the stabilizing guides.

[0053] The upholstered furniture according to the invention preferably has at least one stabilizing and tensioning strap with a first end and a second end, wherein the first end is fastened to the head element and the second end to the base frame. The upholstered furniture according to the invention preferably has at least two stabilizing and tensioning straps. The upholstered furniture according to the invention can be converted into a lying position or a sitting position. In the lying position, the seat element and the head element together form a substantially common flat lying surface, wherein in the sitting position only the seat element forms a substantially flat sitting surface, wherein in the sitting position the head element can be stowed in a substantially vertical position within the storage space of the backrest. The stabilizing and tensioning straps essentially fulfill two technical functions.On the one hand, the stabilizing and tensioning straps can preferably serve to provide additional stabilizing support to the head element during vertical movement, so that an even more improved transition from a lying position to a sitting position, or vice versa from a sitting position to a lying position, can be ensured by the stabilizing and tensioning straps. For this purpose, the stabilizing and tensioning straps are preferably arranged laterally. On the other hand, the stabilizing and tensioning straps also serve to fix the head element horizontally, particularly in the lying position, such that the head element rests under tension on the stabilizing guides or can be pulled taut onto them.This is a great advantage because the headrest cushion, especially when stored in a substantially vertical position within the backrest's storage compartment for extended periods in the sitting position, is prone to deformation, particularly compression, and would therefore detach or lift off the stabilizing guides in the reclining position without the stabilizing and tensioning straps. The stabilizing and tensioning straps can eliminate this problem.

[0054] The upholstered furniture according to the invention preferably has at least one armrest, which can be attached to the left and / or right side of the upholstered furniture. This allows the upholstered furniture according to the invention to be understood as a single piece of upholstered furniture or as a modular, expandable, multifunctional piece of upholstered furniture that can be flexibly and individually adapted to different furniture designs, personal needs, spaces, and usage requirements. In other words, the upholstered furniture according to the invention can comprise additional individual elements such as an armrest or a pillow, so that the upholstered furniture is designed as a type of armchair, corner couch, or sofa bed.It is also conceivable for the upholstered furniture according to the invention to comprise further individual elements, such as an extendable long chair seat element, in particular one that can be moved forward of the seat element, so that an extended lying surface, in particular a length equivalent to that of a standard bed mattress, can be achieved by the long chair seat element. In other words, the upholstered furniture according to the invention can be combined with, expanded upon, or converted by further individual elements or even further upholstered furniture. The modular system structure can be understood such that the upholstered furniture according to the invention can consist of, for example, five or six individual upholstered furniture elements, which can be arranged in a U-shape or an S-shape as desired by the user and can preferably be detachably connected to one another, for example using at least one clamp.

[0055] According to the invention, the seat element and the head element are coupled to one another by means of a joint mechanism and are forcibly adjustable. The joint mechanism preferably has at least one axis of rotation, preferably several axes of rotation. This makes it possible, in particular, to implement complex, different kinematic movement sequences, while at the same time enabling a seamless transition between the horizontal and vertical movement sequences, so that the horizontal and vertical movement sequences are decoupled from one another precisely, on the one hand, and with minimal expenditure of force, on the other. The preferably multi-axis joint mechanism makes it possible, in particular, to take into account the linear rotational movement of the two rotating levers, so that the moments or forces acting during the transition between the horizontal and vertical movement sequences.In particular, forces can be transmitted smoothly and without sudden changes in direction, without jamming or blockage occurring.

[0056] According to the invention, it is provided that the upholstered furniture can be converted, in particular by motor, into a lying position or a sitting position. The motor for this is preferably designed as an electric motor, in particular an electric rotary motor. The motorized conversion or retraction and extension of the upholstered furniture according to the invention offers numerous advantages, in particular with regard to comfort, efficiency and also safety. The motorized conversion reduces the effort required, which is of enormous importance, especially for older people, children or people with limited mobility. Furthermore, the motorized conversion can ensure a fast and precise movement sequence, which in turn can significantly improve comfort. The motorized conversion also increases safety, as the risk of incorrect operation, in particular jamming or the execution of abrupt movements, is minimized.Preferably, the motorized transfer can be remotely controlled by means of a remote control or a hand switch.

[0057] The motor preferably has a self-locking effect. The self-locking effect of the motor is to be understood in such a way that the motor is explicitly configured and designed to keep its rotational position constant without the need for an additional energy supply. In other words, no electrical holding or quiescent current is required. The motor does not require electrical energy to maintain its rotational position, so that energy consumption in resting states, i.e. in the lying or sitting position, can be drastically reduced. The self-locking effect of the motor is due in particular to a specially designed internal mechanical mechanism of the motor, according to which the friction between the motor components is significantly greater than the reverse force, i.e. the load exerted to transfer to a lying or sitting position.In other words, the self-locking effect of the motor ensures that unintentional movement is avoided. Preferably, the motor is designed as a brake motor or has an integrated brake that is automatically activated in the event of a power failure. This additionally ensures that the upholstered furniture according to the invention remains fixed in its reclining or sitting position, even if the electrical plug of the upholstered furniture according to the invention is not connected to the socket.

[0058] The upholstered furniture item according to the invention preferably has a movement mechanism, wherein the movement mechanism is coupled to both the motor and the seat element. The movement mechanism is preferably coupled to the motor and the seat element via connecting means, in particular a fastening interface. The movement mechanism serves in particular to convert a rotational movement of the motor into a translational movement, so that the movement mechanism enables the upholstered furniture to be extended and retracted, in particular a transfer from a reclining position to a sitting position or vice versa, from a sitting position to a reclining position.

[0059] The movement mechanism preferably comprises a gear, a chain drive, or a belt drive. The gear can be designed, for example, as a spindle gear or worm gear. In particular, the self-locking effect of the motor can be additionally supported when designed as a spindle gear, since spindle gears usually have a trapezoidal thread and therefore cannot reverse on their own, and in particular cannot slip off. The special thread structure therefore holds the load securely, so that in the event of a power failure, the load remains in its last position. In addition, spindle gears are ideal for constant and precise linear movements and also have a very good transmission ratio, so that very high forces can be transmitted even with very low motor drive torque.Thus, the person does not have to step down from the upholstered furniture according to the invention to move it from a reclining position to a sitting position, or vice versa. The person can lie or remain sitting comfortably on the upholstered furniture. Furthermore, spindle drives have a simple mechanical design and are therefore very easy to maintain. With proper lubrication, spindle drives are very durable and wear-resistant.

[0060] An upholstered furniture according to the invention is explained in more detail below with reference to drawings.

[0061] They show schematically: Fig. 1 an upholstered furniture in a reclining position according to an embodiment of the present invention, Fig. 2 an upholstered furniture in a sitting position according to an embodiment of the present invention, Fig. 3 an upholstered furniture in a lying position without the head element according to an embodiment of the present invention, Fig. 4 a side view of an upholstered furniture with a rotatable lifting and stowing mechanism according to an embodiment of the present invention, Fig. 5 a transition between a horizontal and vertical movement sequence according to an embodiment of the present invention, and Fig. 6 possible design of the upper stabilizing elements of the head element according to an embodiment of the present invention.

[0062] Fig. 1 shows a perspective view of an upholstered furniture item 100 according to the invention in a reclining position A according to an exemplary embodiment of the invention. Here, the head element 50 is in its horizontal position H (see also Fig. 4). The upholstered furniture 100 can be motorized from a lying position A to a sitting position B, as in Fig. 2, or vice versa, from a sitting position A to a lying position B by motor.

[0063] The upholstered furniture 100 according to the invention can be understood as a singular piece of upholstered furniture or as a modularly expandable, multifunctional piece of upholstered furniture that can be flexibly and individually adapted to different furniture designs, personal needs, spaces, and usage requirements. In other words, the upholstered furniture 100 according to the invention can comprise additional individual elements (not shown), such as a pillow or a chaise longue seat element, or can be combined with, expanded with, or converted by other pieces of upholstered furniture. For modular expansion, the upholstered furniture 100 has a connection system. The connection system can, for example, comprise a plurality of individual hooks 26 or connecting rails.

[0064] The upholstered furniture 100 comprises a motor 10, a base frame 20, a backrest 30 with a storage space 35, a seat element 40, and a head element 50. Depending on the design, the upholstered furniture 100 can have one or two armrests 80. It is conceivable that the upholstered furniture 100 may not have armrests 80 in a particular design.

[0065] The backrest 30, the seat element 40 and the head element 50 can each have integrated upholstery or separate upholstery elements that can be attached to them.

[0066] The padding of the head element 50 preferably has a plurality of vertical cuts so that the head element 50 can be better stowed.

[0067] The seat element 40 and / or the head element 50 can be moved forwards and backwards relative to the base frame 20 by means of a motor, in particular retracted and extended.

[0068] In the lying position A, the seat element 40 and the head element 50 together form a substantially common flat lying surface. In the sitting position B, as shown in Fig. 2, only the seat element 40 forms a substantially flat seat surface.

[0069] The seat element 40 and the head element 50 are coupled to each other by a joint mechanism 60 and are forcibly adjustable, so that in the sitting position B, as in Fig. 2, the head element 50 can be stowed in a substantially vertical position within the storage space 35 of the backrest 30.

[0070] The seat element 40 preferably has at least two support rollers 45, which are each provided laterally in a front region of the seat element 40. The support rollers 45 can be understood as floor rollers by means of which the seat element 40 is supported on the floor, in particular in a rollable manner.

[0071] Fig. Figure 3 shows a perspective view of an upholstered furniture item 100 according to the invention in a reclining position A according to an exemplary embodiment of the invention. For better understanding, the head element 50 is hidden.

[0072] The base frame 20 is box-shaped, in particular as a bed box, and has a first end 21 and a second end 22, wherein the at least two upper stabilizing guides 25.1 each extend from the first end 21 to a point P which is arranged at a distance L from the second end 22.

[0073] Basically, the base frame 20 and the backrest 30 form a unit, whereby the unit can be designed as a single or multi-part unit. A single-part unit can be understood as meaning that the base frame 20 and the backrest 30 are formed from a single continuous component, whereas a multi-part unit is characterized in that the base frame 20 and the backrest 30 are each formed from several individual structural elements that can be firmly and / or detachably connected to one another. The unit formed by the base frame 20 and the backrest 30 has a rear wall 23. The rear wall 23 serves as the boundary surface of the storage space 35 of the backrest 30.

[0074] As in the Fig. 3, the at least two upper stabilizing guides 25.1 are essentially provided on the edge of the base frame 20, so that one stabilizing guide 25.1 is arranged on the left side and one on the right side of the base frame.

[0075] The rotatable lifting and stowing mechanism 90 according to the invention is arranged such that the first rotating lever 91 and the second rotating lever 92 are each arranged on a lateral inner side of the base frame 20, with a closed driver guide 95 each located substantially at the same height as the at least two upper stabilizing guides 25.1. The first rotating lever and the second rotating lever are each decoupled from the at least two upper stabilizing guides. In other words, the rotatable lifting and stowing mechanism according to the invention is arranged substantially at the same height as the at least two upper stabilizing guides.

[0076] The upholstered furniture item 100 according to the invention has a movement mechanism 15, wherein the movement mechanism 15 is coupled both to the motor 10 and to the seat element 40. The movement mechanism 15 is coupled to the motor 10 and the seat element, in particular via fastening interfaces 15.1 and 15.2. The movement mechanism 15 serves, in particular, to convert a rotational movement of the motor 10 into a translational movement, so that the movement mechanism 15 enables the upholstered furniture item 10 to be extended and retracted, in particular a transfer from the reclining position A to the sitting position B or vice versa, from the sitting position B to the reclining position B.

[0077] Fig. 4 shows a side view of an upholstered furniture item 100 with a rotatable lifting and stowing mechanism 90 according to an embodiment of the present invention.

[0078] As in the Fig. 4, the base frame 20 has at least two upper stabilizing guides 25.1 and at least two lower stabilizing guides 25.2, wherein the upper stabilizing guides 25.1 are provided on an upper side of the base frame 20 and the lower stabilizing guides 25.2 are provided on an inner side of the base frame 20. As a result, the translational, essentially horizontal displacement of the seat element 40 and / or the head element 50 relative to the base frame 20 can be significantly improved, in contrast to the prior art, by further breaking down the horizontal movement sequence.

[0079] The upper stabilization guides 25.1 are open, and the lower stabilization guides 25.2 are closed. The upper stabilization guides 25.1 serve to stabilize and execute the horizontal movement sequence of the head element 50. The lower stabilization guides 25.2 serve to stabilize and execute the horizontal movement sequence of the seat element 40.

[0080] As in the Fig. As can be clearly seen in Figure 4, the lower stabilizing guides 25.2 are longer than the upper stabilizing guides 25.1, so that the lower stabilizing guides 25.2 extend beyond point P.

[0081] The upholstered furniture item 100 has two stabilizing and tensioning straps 36, each of which has a first end and a second end. The first end is attached to the head element 50, and the second end is attached to the base frame 20. The upholstered furniture item according to the invention preferably has at least two stabilizing and tensioning straps 36. The stabilizing and tensioning straps 36 are made of a tear-resistant and highly resilient material, preferably high-strength polyester, nylon, or aramid.

[0082] Fig. 5 shows a transition between a horizontal and vertical movement sequence according to an embodiment of the present invention.

[0083] The basic idea of ​​the invention is to functionally separate or decouple the different kinematic movement sequences, in particular the horizontal movement sequence and the vertical movement sequence, which determine the conversion mechanism of the upholstered furniture 100 according to the invention, in particular the transfer from the lying position A to the sitting position B or conversely the transfer from the sitting position A to the lying position B.

[0084] The horizontal movement sequence describes, in particular, a movement in which all points of the seat element 40 and / or the head element 50 experience essentially the same translational horizontal displacement relative to the base frame 20. For this purpose, the invention provides that the base frame 20 has at least two upper stabilizing guides 25.1 and at least two lower stabilizing guides 25.2, along which the seat element 40 and / or the head element 50 can be displaced horizontally forwards and backwards.

[0085] The vertical movement sequence describes, in particular, a movement in which all points of only the head element 50 can be displaced back and forth around a fictitious turning point from a substantially horizontal position to a substantially vertical position. The vertical movement sequence describes, in particular, a movement for lifting the head element 50 from the at least two upper stabilizing guides 25.1 and for stowing the head element 50 in a stowage space 35 of the backrest 30. For this purpose, an additional and separate rotatable lifting and stowing mechanism 90 is provided according to the invention.

[0086] As in the Fig. 5, the upper stabilizing guides 25.1 and the lower stabilizing guides 25.2 each have a constant horizontal profile. The seat element 40 is precisely guided within the lower stabilizing guides 25.2 by stabilizing elements 40.1, so that tilting and / or disengagement, i.e., displacement of the seat element 40 relative to the base frame 20 transverse to the direction of the lower stabilizing guides 25.2, is excluded. The stabilizing elements 40.1 are connected to a support 42, wherein the support 42 is in turn connected to the underside of the seat element 40.

[0087] The head element 50 is freely guided by stabilizing elements 50.1 on the surface of the upper stabilizing guides 25.1 such that a lifting of the head element 50 from the upper stabilizing guides 25.1, in particular a stowing of the head element 50 in the stowing space 35 of the backrest 30, is possible.

[0088] In other words, not only are the horizontal and vertical movement sequences decoupled from one another, but the horizontal movement sequence itself is also further broken down into two subordinate, separate horizontal movement sequences, so that a single horizontal movement sequence is provided for the seat element 40 and the head element 50.

[0089] The rotatable lifting and stowing mechanism 90 comprises a first rotating lever 91 and a second rotating lever 92, wherein the first rotating lever 91 and the second rotating lever 92 are each provided on a lateral inner side of the base frame 20 and are each decoupled from the at least two upper stabilizing guides 25.1.

[0090] The first rotating lever 91 and the second rotating lever 92 each have a closed driver guide 95, within which an upper stabilizing element 50.1 of the head element 50 can be guided.

[0091] The rotatable lifting and stowing mechanism 90 is arranged such that the first rotating lever 91 and the second rotating lever 92 are each arranged on a lateral inner side of the base frame 20, wherein a closed driver guide 95 is located substantially at the same height as the at least two upper stabilizing guides 25.1.

[0092] How to continue in the Fig. 5, a closed driver guide 95 together with an upper stabilizing guide 25.1 each form a common interrupted guide UF on a lateral inner side of the base frame 20.

[0093] The common interrupted guide UF is to be understood in such a way that the guide path for carrying out the horizontal movement sequence, in particular a movement in which all points of the seat element 40 and / or the head element 50 experience essentially the same translational horizontal displacement relative to the base frame 20, is broken through or severed at least at one point.

[0094] In other words, the common interrupted guide UF is formed from separate, in particular two decoupled, guides, namely a closed driver guide 95 of one of the rotating levers 91, 92 and an upper stabilizing guide 25.1. In other words, the common interrupted guide UF describes a two-point guide in which the two independent and decoupled guides 95 and 25.1 functionally cooperate to ensure precise alignment of a common guide line for executing a linear movement.

[0095] The closed driver guide 95 of the rotating levers 91, 92 is curved, in particular U-shaped, and has a stop 96 that can be engaged by an upper stabilizing element 50.1 of the head element 50 when a predetermined position of the head element 50 is reached. The stop 96 of the closed driver guide 95 serves in particular for docking and rotating the rotating levers 91, 92 before the head element 50 can lift off from the upper stabilizing guides 25.1.

[0096] The first rotating lever 91 and the second rotating lever 92 each have a rotating mechanism 97, by means of which the closed driver guide 95 can be rotated from a substantially horizontal orientation position into a substantially vertical orientation position about a rotation point R. Due to the rotating mechanism 97 of the two rotating levers 91, 92, the rotatable lifting and stowing mechanism 90 is based on an automatically executing linear rotation movement concept, which can independently trigger a specific function, namely the execution of the vertical movement sequence, as soon as the stop 96 of the closed driver guide 95 is struck by the upper stabilizing element 50.1 of the head element 50.

[0097] The rotating mechanism 97 of the two rotating levers 91, 92 is based at least on the design principle that a continuous or intermittent linear rotary movement or pure rotary movement of the two rotating levers 91, 92 about a fixed axis, in particular about a rotation point R, can be carried out.

[0098] How well in the Fig. 4 and Fig. 5, the rotation point R of the rotating mechanism 97 is (at or) below the horizontal height of the seat element 40 (in use). From the movement sequence in Fig. 5 it becomes clear that the lifting and stowing mechanism 90 lifts the head element 50 in a simple manner and at the same time holds it in the driver guide 95 (due to the downward force of gravity) by means of the stabilizing element 50.1 of the head element 50.

[0099] As in the Fig. 5, the vertical movement sequence is to be understood as a movement which results from rising, twisting, folding, tilting, turning, inclining or a combination thereof and which can be triggered independently by the rotatable lifting and stowing mechanism 90 according to the invention, so that all points of the head element 50 can be displaced back and forth around a fictitious turning point from a substantially horizontal position to a substantially vertical position.

[0100] The first rotating lever 91 and the second rotating lever 92 each have rounded or beveled edges 98 in the area of ​​the rotating mechanism 97. The edges 98 primarily enable a small radius of movement of the two rotating levers 91, 92, so that the two rotating levers 91, 92 can each be closely adapted to the surrounding components without being damaged.

[0101] The first rotating lever 91 and the second rotating lever 92 can each be made of plastic, metal, wood, or the like. It is conceivable that the width of the closed driver guide 95 corresponds to the width or substantially to the width of the upper stabilizing elements 50.1 of the head element 50.

[0102] The closed driver guide, in particular its support surface, has a coating. The coating can, in particular, be a low-friction coating. Such a low-friction coating can drastically reduce the frictional resistance between the two upper stabilizing elements 50.1 of the head element 50 and the support surface of the closed driver guide 95, thus ensuring a virtually frictionless and therefore very energy-efficient vertical movement sequence with excellent rolling behavior.

[0103] In the lowest Fig. 5, the head element 50 is in its vertical position V, which also corresponds to the sitting position B of the seat element 40.

[0104] Fig. 6 shows a possible design of the upper stabilizing elements 50.1 of the head element 50 according to an embodiment of the present invention.

[0105] According to the invention, it is explicitly provided that the first rotating lever 91 and the second rotating lever 92 each have a closed driver guide 95, within which an upper stabilizing element 50.1 of the head element 50 can be guided.

[0106] In general, the lower stabilizing elements 40.1 of the seat element 40 and the upper stabilizing elements 50.1 of the head element 50 can be identical and designed, for example, as a roller, sliding element or wooden block.

[0107] The two upper stabilizing elements 50.1 of the head element 50 can each have a curved geometric shape in some areas, which essentially corresponds to the geometric shape of the contact area of ​​the stop 96 of the closed driver guide 95 of the two rotating levers 91, 92. This allows the two upper stabilizing elements 50.1 of the head element 50 to rest flatly against the stop 96 during docking, in order to trigger the vertical movement sequence precisely and with less effort.

[0108] It is conceivable that both the lower stabilizing elements 40.1 of the seat element 40 and the upper stabilizing elements 50.1 of the head element 50 each have a different, in particular constant, design, as in the Fig. 6. For example, it is conceivable that the design shape is angular, in particular square or rectangular, spherical, cylindrical or pin-like.

[0109] The upper stabilizing elements 50.1 of the head element 50 each have a rotational movement mechanism 53.

[0110] Due to the rotary movement mechanism 53, the upper stabilizing element 50.1 can be guided not only linearly within the closed driver guide 95, but can also be guided in a rotary manner.

[0111] Due to the additional rotational mobility provided by the rotational movement mechanism 53, the upper stabilizing elements 50.1 of the head element 50 cannot tilt in the closed driver guide 95 of the two rotating levers 91, 92 when the head element 50 is lifted off the at least two upper stabilizing guides 25.1 and when the head element 50 is stowed in the stowage space 35, and in particular can smoothly follow the linear rotational movement of the two rotating levers 91, 92. List of reference symbols 10 Engine 15 Movement mechanism 20 base frame 21 first end of the base frame 22 second end of the base frame 23 Rear wall 25 stabilization guides 25.1 upper stabilization guides 25.2 lower stabilization guides 26 hooks 30 backrest 35 storage space 36 Stabilization and tensioning strap 40 seating element 40.1 Stabilizing elements of the seat element 42 carriers 45 support rollers 50 head element 50.1 Stabilizing elements of the head element 53 Rotary movement mechanism 60 joint mechanism 80 armrest 90 Lifting and stowing mechanism 91 first rotating lever 92 second rotating lever 95 Driver guide 96 stops 97 Rotating mechanism 98 edges 100 upholstered furniture A lying position B Sitting position H horizontal position of 50 V vertical position of 50 L length P point R rotation point UF Interrupted tour

Claims

[1] Extendable upholstered furniture (100) which can be motor-transformed into a lying position (A) or a sitting position (B), the upholstered furniture (100) comprising: - an engine (10), - a stationary base frame (20) with at least two (essentially horizontally extending) stabilizing guides (25), - a backrest (30) with a storage space (35), - at least one seat element (40), - at least one head element (50) with at least two stabilizing elements (50.1), wherein the seat element (40) and / or the head element (50) can be displaced horizontally forwards and backwards relative to the base frame (20) along the at least two stabilizing guides (25) by the motor (10), wherein the seat element (40) and the head element (50) are coupled to one another by a joint mechanism (60) and are forcibly adjustable, wherein in the lying position (A) the seat element (40) and the head element (50) together form a substantially common flat lying surface, wherein in the sitting position (B) only the seat element (40) forms a substantially flat seat surface, and in the sitting position (B) the head element (50) can be stowed in a substantially vertical position (V) within the stowage space (35) of the backrest (30), wherein a rotatable lifting and stowing mechanism (90) is provided for lifting the head element (50), in particular from the horizontal position (V), from the stabilising guides (25) and for stowing the head element (50) in the stowage space (35), wherein the rotatable lifting and stowing mechanism (90) comprises a first rotating lever (91) and a second rotating lever (92), wherein preferably the two rotating levers (91, 92) lift the head element (50) from the horizontal position (H) into the vertical position and the head element (50) cooperates exclusively with the two rotating levers (91, 92) into the vertical position (V). [2] Extendable upholstered furniture (100) according to claim 1, wherein the stationary base frame (20) has at least two upper stabilizing guides (25.1) and at least two lower stabilizing guides (25.2) as stabilizing guides (25), wherein preferably the at least two upper stabilizing guides (25.1) are open and the at least two lower stabilizing guides (25.2) are closed, wherein the at least two upper stabilizing guides (25.1) and the at least two lower stabilizing guides (25.2) extend substantially horizontally, wherein preferably the at least two upper stabilizing guides (25.1) are provided on a lateral upper side of the base frame (20) and the at least two lower stabilizing guides (25.2) are provided on a lateral inner side of the base frame (20), and the seat element (40) cooperates with the at least two lower stabilizing elements (40.1), and the head element (50) cooperates with the at least two upper stabilizing elements (50.1), wherein preferably the at least two upper stabilizing elements (50.1) are each designed to be rotatable, wherein the seat element (40) and / or the head element (50) can be displaced horizontally forwards and backwards relative to the base frame (20) along the at least two upper stabilizing guides (25.1) and the at least two lower stabilizing guides (25.2) by the motor (10), wherein the rotatable lifting and stowing mechanism (90) is provided for lifting the head element (50) from the at least two upper stabilising guides (25.1) and for stowing the head element (50) in the stowage space (35), wherein the first rotating lever (91) and the second rotating lever (92) are each provided on a lateral inner side of the base frame (20) and are each decoupled from the at least two upper stabilizing guides (25.1), wherein the first rotating lever (91) and the second rotating lever (92) each have a closed driver guide (95), within which an upper stabilizing element (50.1) of the head element (50) can be guided. [3] Extendable upholstered furniture (100) according to one of the preceding claims, characterized by that the base frame (20) is box-shaped and has a first end (21) and a second end (22), wherein the at least two upper stabilizing guides (25.1) each extend from the first end (21) to a point (P) which is arranged at a distance (L) from the second end (22). [4] Extendable upholstered furniture (100) according to one of the preceding claims, characterized bythat a closed driver guide (95) together with an upper stabilizing guide (25.1) each form a common interrupted guide (UF) on a lateral inner side of the base frame (20). [5] Extendable upholstered furniture (100) according to one of the preceding claims, characterized by in that in each case a closed driver guide (95) is curved, in particular U-shaped, and has a stop (96) which can be struck by an upper stabilizing element (50.1) of the head element (50) when a predetermined position of the head element (50) is reached. [6] Extendable upholstered furniture (100) according to one of the preceding claims, characterized bythat the first rotating lever (91) and the second rotating lever (92) each have a rotating mechanism (97) by means of which the closed driver guide (95) can be rotated from a substantially horizontal alignment position into a substantially vertical alignment position about a rotation point (R). [7] Extendable upholstered furniture (100) according to one of the preceding claims, characterized by that the rotating mechanism (97) comprises at least one rotary joint, hinge joint, ball joint, egg joint, saddle joint or a rotary hinge joint. [8] Extendable upholstered furniture (100) according to one of the preceding claims, characterized by that the first rotating lever (91) and the second rotating lever (91) each have rounded and / or oblique edges (98) in the region of the rotating mechanism (97). [9] Extendable upholstered furniture (100) according to one of the preceding claims, characterized bythat the edges (98) form a semicircle, full circle or a polygon, in particular an octagon, around the rotating mechanism (97). [10] Extendable upholstered furniture (100) according to one of the preceding claims, characterized by that the at least two upper stabilizing elements (50.1) of the head element (50) each have a rotary movement mechanism (53), by means of which a respective stabilizing element (50.1) can be guided in a rotationally movable manner within the closed driver guide (95). [11] Extendable upholstered furniture (100) according to one of the preceding claims, characterized by that the rotary movement mechanism (53) comprises at least one rotary joint, hinge joint, ball joint, egg joint, saddle joint or a rotary hinge joint. [12] Extendable upholstered furniture (100) according to one of the preceding claims, characterized bythat the at least two upper stabilizing elements (50.1) of the head element (50) each have a curved geometric shape in some areas, which essentially corresponds to the geometric shape of the contact area of ​​the stop (96) of the closed driver guide (95). [13] Extendable upholstered furniture (100) according to one of the preceding claims, characterized by that the at least two lower stabilizing elements (40.1) of the seat element (40) and / or the at least two upper stabilizing elements (50.1) of the head element (50) are each designed as a sliding element or as a roller. [14] Extendable upholstered furniture (100) according to one of the preceding claims, characterized by that the sliding element is designed as a sliding roller, a sliding block or a fleece element. [15] Extendable upholstered furniture (100) according to one of the preceding claims, characterized bythat the first rotating lever (91) and the second rotating lever (91) are each made of plastic, metal or wood. [16] Extendable upholstered furniture (100) according to one of the preceding claims, characterized by that the closed driver guides (95) each have a coating. [17] Extendable upholstered furniture (100) according to one of the preceding claims, characterized by that the base frame (20) and the backrest (30) form a unit with a rear wall (23). [18] Extendable upholstered furniture (100) according to one of the preceding claims, characterized by that the seat element (40) has support rollers (45). [19] Extendable upholstered furniture (100) according to one of the preceding claims, characterized bythat the upholstered furniture (100) has at least one stabilizing and tensioning belt (36) with a first end and a second end, wherein the first end is fastened to the head element (50) and the second end is fastened to the base frame (20). [20] Extendable upholstered furniture (100) according to one of the preceding claims, characterized by that the upholstered furniture (100) has at least one armrest (80) which can be fastened to the left and / or right side of the upholstered furniture (100). [21] Extendable upholstered furniture (100) according to one of the preceding claims, characterized by that the joint mechanism (60) has at least one axis of rotation, preferably several axes of rotation. [22] Extendable upholstered furniture (100) according to one of the preceding claims, characterized by that the motor (10) is designed as an electric motor, in particular an electric rotary motor. [23] Extendable upholstered furniture (100) according to one of the preceding claims, characterized bythat the motor (10) has a self-locking effect. [24] Extendable upholstered furniture (100) according to one of the preceding claims, characterized by that the upholstered furniture (100) has a movement mechanism (15), wherein the movement mechanism (15) is coupled to the motor (10) and the seat element (40). [25] Extendable upholstered furniture (100) according to one of the preceding claims, characterized by that the movement mechanism (15) comprises a gear, a chain drive or a belt drive.

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