Frame element for adjustable bed, modular frame, adjustable bed as well as mounting method The invention relates to a frame element for an adjustable bed. Furthermore, the invention relates to a modular frame with at least two of such frame elements, an adjustable bed as well as to a mounting method.

Adjustable beds, for example comfort beds or care beds are widely known. Beds of this type typically comprise a head part, a center part and a foot part, the head part and/or the foot part being adjustable in order to change a reclining position. Typically, this is effected by means of one or multiple actuators actuating a respective mechanisms for adjusting the head part, center part and/or foot part. Due to various provisions and/or customer wants, there is a large variety of adjustable beds. On the one hand, this relates to the adjustability of the bed per se, wherein it may be desired to only adjust the head part, the foot part or both parts, for example. On the other hand, this relates to the different sizes of the bed such as king-size, queen-size, twin-size or the like. As a result, there is a huge variety of adjustable beds that come with a variety of frames and necessary drive technologies. One object to be achieved is to provide an improved concept for adjustable beds that contributes to an improved implementation of a variety of variants of adjustable beds.

The object is achieved by the features of the independent claims. Advantageous developments are indicated in the dependent claims. According to a first aspect, a frame element for an adjustable bed is described. The frame element is designed as a longitudinal element for a longitudinal side of the bed. The frame element comprises a frame carrier as well as an adjustment mechanism for adjusting the bed. The frame element further comprises at least one actuator for actuating the adjustment mechanism. The frame carrier, the actuator and the adjustment mechanism together form an integrated unit. The longitudinal element can also be referred to as longitudinal assembly. The frame element is configured in such a way as to be supported on a base. In other words, weight forces and moments are deflected to the base via the frame element. The adjustment mechanism typically comprises one or a plurality of segments, in particular joint or lever arms, which have a rigid design and are pivotally coupled to one another in a mechanical manner. The adjustment mechanism and the at least one actuator are mechanically coupled with the frame carrier. In particular, the adjustment mechanism and the actuator are arranged directly on the frame carrier and are not arranged to be substantially spaced apart from the latter, e.g. by more than 10 cm or 15 cm. Unless stated otherwise, the actuator comprises a respective mechanics, possibly a transmission as well as a motor such as an electric motor. The frame carrier represents a stationary element, which forms an integrated unit together with the adjustment mechanism and the actuator. In this context, integrated unit refers to the fact that the frame carrier, the actuator and the adjustment mechanism form one entity. In other words, the frame element is to be considered as an integrated component or a modular unit, which comprises the drive technology and mechanism as an integral part. An electric motor provided for actuating the actuator is to be considered part of the integrated unit, as long as said motor is arranged on or within the actuator as a direct component. For example, integrated unit means that the adjustment mechanism and actuators do not laterally protrude over maximum outer sides of the frame element, in particular the frame carrier. An adjustable bed is considered to be a system comprising frame elements, adjustment mechanics, and drive technology such as actuators, but not necessarily a mattress. In other words, the bed can also be considered to be a bedstead, at least comprising the above-mentioned components.

Thus, the frame element is designed as a compact unit in such a way that it can be used separately and modularly for an adjustable bed, e.g. for a frame of an adjustable bed. This achieves a plurality of the advantages stated below, inter alia.

Due to the fact that the frame element forms a separate unit, said element is suitable for the structure of a variety of beds, in particular of different sizes, without the need for separate (individual) frames to be produced for each bed. In other words, only a small number of carry-over parts such as one or two of such frame elements are necessary to realize different bed systems and adjustable beds. The frame carrier comprises corresponding fixing means in order to be able to mechanically connect the frame elements to further frame elements, such as transversal elements, to obtain one frame. As an alternative, no transversal elements are used, and two longitudinal elements are connected like rigid panels via corresponding support elements.

This contributes to a reduced effort in logistics and storage with producers and furniture dealers, for example.

The simple structure also allows reducing the weight of the frame and/or the bed. This allows additional distribution options, such as online distribution.

Furthermore, the concept allows a modular construction of a bed on-site. This reduces transport costs since a pre-assembled, space-consuming frame does not need to be transported. Furthermore, the bed can be transported to the installation site in modules, which provides advantages in view of transport of the frame elements in closely environments or buildings such as staircases and doors.

According to implementations, in each case one frame element is used for each longitudinal side of an adjustable bed, whereby the drive technique, in particular the adjustment mechanics and the actuators, can be designed in a more compact manner, respectively. Then, more cost- effective, less performant and/or more compact actuators can be used. Furthermore, this results in the possibility of realizing a so-called frame insert, wherein the frame element(s) can be inserted into an existing piece of furniture. Furthermore, external forces acting on the bed or the frame can be laterally supported by means of the two frame elements, thereby improving the overall rigidity of the bed. At the same time, transverse connections between the frame elements can be reduced, leading to a significant saving in weight and material.

For example, no additional supporting structures are required for connecting the two frame elements and their adjustment mechanisms, except for support elements for supporting a mattress. Such support elements are rigid panels, for example, that do not require an additional panel carrier structure. Due to the fact that the frame element is designed as one unit and in a compact manner, more space is available for arranging other system components such as massage elements, ventilators or the like.

Furthermore, it is not necessary to provide another, displaceable carrier frame in addition to a stationary base frame.

According to one embodiment, the at least one actuator is arranged in such a way that an introduction of force of the at least one actuator into the adjustment mechanism is effected in a movement plane of the adjustment mechanics. As a result, forces of the actuator are not transferred to the outside, i.e. remote from the frame carrier, to the adjustment mechanism. In other words, the actuator exerts a force in a direction located in the movement plane of the adjustment mechanism. In this context, the term "remote" means that forces would be introduced into support elements or corresponding adjustment mechanisms via an actuator by means of additional mechanics and support structures, the actuator being located between two longitudinal elements. Here, the actuator would not be arranged directly on the longitudinal elements and would not be an integral part thereof. The movement plane is a vertical plane which extends through or along the frame element and in which the mechanism for adjusting the bed is moved. The movement plane extends through one or multiple couplings of the adjustment mechanism and/or the actuator with the frame carrier. Preferably, the plane runs normally to a base for the frame element. This way, the forces of the actuator are transmitted to the adjustment mechanism in the direct vicinity of the frame carrier along the frame carrier. Thus, it is not necessary to introduce forces of the actuator between two longitudinal frame elements of a frame, but it allows introducing the forces laterally via the frame element. This way, transverse reinforcements, support structures are avoided between two longitudinal elements of a frame. According to another embodiment, the at least one actuator is embedded in the frame carrier. Thus, the actuator is located within the frame carrier, allowing a compact structure of the frame element. Also, unauthorized access to the actuator is reduced or prevented. In this context, the term "embedded" means that the actuator is enclosed by the frame carrier on at least two sides, for example. However, there is no need for the actuator to be completely enclosed. The actuator is arranged within the frame carrier, for example, said frame carrier open to one side. The invention also covers embodiments, in which an electric motor of the actuator is not necessarily arranged within the frame carrier, but on the outside thereof on said carrier. The mechanism of the actuator, such as a transmission, a spindle and a spindle nut, is embedded into the frame carrier without the electric motor. In further embodiments, the at least one actuator in the frame carrier is encapsulated. To that end, the frame carrier has a hollow design, for example, wherein the actuator and at least one mechanics of the actuator without a motor are arranged within the hollow space or cavity. Alternatively, the actuator and the motor are arranged within the frame carrier. In this regard, the frame carrier may be a U-shaped profile which is open to the top.

According to another embodiment, the at least one actuator is arranged directly on or in the frame carrier. Directly means that the actuator is directly coupled to the frame carrier without interposing further joint connections such as levers or rods. In other words, the actuator is arranged in direct physical proximity of the frame carrier. This is not exclusive of the actuator being arranged in or on another support or housing element of the frame carrier, which is arranged directly on the frame carrier. In other words, the actuator is not arranged at a substantial distance, in particular not more than 10 cm from the frame carrier.

According to another embodiment, the adjustment mechanism is at least partially displaceably guided on the frame carrier. "Partially" in this context means that not necessarily the entire adjustment mechanism, but rather a segment for adjusting a head part or a foot part of the bed, is guided to be displaceable, for example. This explains the so-called subsequently-described Wallhugging function. Upon adjustment of a segment of the adjustment mechanics assigned to a head part of the bed from a reclining position into an angled position, a positon of a head end of the segment changes in relation to a longitudinal direction of the frame element. When adjusting a segment of the adjustment mechanism, the segment assigned to a head part of the bed, from a reclined position into an angled position, a position of the head end of the segment changes relative to the longitudinal direction of the frame element. In particular, the head end travels towards the middle of the frame element with respect to the longitudinal direction upon adjustment. In other words, the head end would depart from a wall facing the head end or wall side, thereby increasing a distance to the wall. In order to keep this distance constant or almost constant, at least the respective segment of the adjustment mechanism has to be displaceable relative to the frame carrier. Therefore, the change in position of the head end relative to the longitudinal direction of the frame element can be compensated by a displacement of the adjustment mechanism in the opposite direction.

According to another embodiment, the adjustment mechanism and the at least one actuator form an assembly, which is guided on the frame carrier in a displaceable manner. This allows performing the above-described Wallhugging. Guidance of the assembly on the frame carrier can be realized by means of rolls. Due to the fact that the assembly is guided in a displaceable manner, forces of the assembly are vertically introduced into the frame carrier and into the frame element. In particular, external forces, e.g. created by a person resting on an adjustable bed, are introduced into the frame element in a vertical manner. Thereby, no or only very small bending moments or side loads act on the frame element. Here, no additional transverse reinforcements have to be used between such frame elements, except for support elements for supporting a mattress. For example, the frame carrier has one or more guiding elements, e.g. guiding links or channels, and the adjustment mechanism has sliding elements, e.g. rolls, to be supported in the one or more guiding elements on the frame carrier.

According to another embodiment, the frame carrier comprises two rigid longitudinal carriers, between which the assembly is arranged. The assembly is hinged between the two longitudinal carriers and/or guided to be displaceable relative to them, for example. This allows a particular good force introduction into the frame element.

According to a further embodiment, the at least one actuator is pivotally supported on the assembly and directly coupled to a segment of the adjustment mechanism for pivoting the segment. In each case, the actuator is mechanically coupled with one end to a lever arm of the adjustment mechanism and with another end to a further segment of the adjustment mechanism, for example. Said couplings are configured to be pivotable, for example. This contributes to a favorable distribution of forces toward an axis of the actuator or an operating direction of the actuator.

Furthermore, no or almost no bending moments are transmitted to the actuator. This contributes to a modular concept, in which in each case one actuator identical in construction can be used for adjusting a head part or a foot part, respectively. It is possible, for example, that a motor arranged offset by 90° for actuating the actuator occupies construction space on an inner side of the bed.

According to a further embodiment, the at least one actuator is secured to the assembly in a stationary manner and coupled to a segment of the adjustment mechanics for pivoting the segment. The actuator is directly mechanically-coupled to the segment, in particular via a joint. As an alternative, the actuator is releasably coupled to the segment or touches the segment. The actuator is configured with a displaceable piston, the piston transmitting forces to the segment of the adjustment mechanism. Here, the actuator merely has to transmit pressure forces, not tensile forces. This offers an additional safety function, in particular in the case of a pinch.

According to a further embodiment, the adjustment mechanism comprises a lever arm which is pivotally supported on a segment of the adjustment mechanism, in particular a segment assigned to a head part or a foot part of the bed, and which is pivotally supported on the frame carrier. This allows the above-described Wallhugging. Via the coupling of the lever arm on the fixed frame carrier, the adjustment mechanism or the assembly can be displaced relative to the carrier following an actuation of the at least one actuator.

According to another embodiment, a segment of the adjustment mechanism, in particular a segment assigned to a head part of the bed, is pivotally supported on the frame carrier and displaceable relative to the frame carrier. This allows realizing the Wallhugging function in a bed in which the at least one actuator is not designed to be displaceable relative to the frame carrier. According to another embodiment, the at least one actuator comprises an electric motor which is directly coupled to the at least one actuator for actuation of the same. The at least one actuator forms the integrated unit together with the electric motor, the adjustment mechanism and the frame carrier. For example, the electric motor is directly flanged to the actuator, resulting in a compact design of the frame element. In particular, the electric motor is not arranged to be substantially spaced from the frame carrier. It is not necessary, for example, to arrange an electric motor in the middle between two such frame elements being part of an adjustable bed. This is helpful, inter alia, to reduce construction space. In embodiments, the electric motor is arranged coaxially to the actuator, for example coaxially to a spindle of the actuator. In other words, the electric motor is arranged in direction of extension of the carrier frame. Thus the actuator with motor can be integrated in the frame carrier, e.g. encapsulated. Thus a compact design is achieved.

According to another embodiment, the frame element, in particular the at least one actuator or the frame carrier, comprises to opposite flange portions, so that the electric motor can be secured on the one or on the other flange portion. This contributes to the modularity of the frame element, so that the element can be used for both sides of the bed. It is thereby possible to arrange electric motors pointing to the middle of a frame, for example. This contributes to security against unauthorized access. According to another embodiment, the at least one actuator comprises an electric motor, wherein an operating direction of the at least on actuator runs parallel to a drive axis of the electric motor. In other words, this is a drive system in which all rotatable components, such as axes, transmissions and/or spindles are arranged coaxially to one another. Thus, it is possible to integrate the entire drive technology within the frame element or within the frame carrier. This allows a particular compact design of the frame element.

According to another embodiment, the frame element comprises another actuator, wherein the at least one actuator is mechanically coupled to a segment of the adjustment mechanism, which is assigned to the head part of a bed, and wherein the other actuator is assigned to a segment of the adjustment mechanism, which is assigned to a foot part of the bed. Together with the two actuators, the frame carrier forms an integrated unit and can modularly be used for adjusting a foot part as well as a head part. Thus, the frame element can be designed in a compact manner, in particular compact actuators can be used that can be completely installed or embedded in the frame carrier, for example. Optionally, the first actuator and the further actuator are composed of identically-structured components. Both actuators have an actuator housing, with a spindle being displaceable there-through, for example. By this, the spindle can be coupled to a segment of the adjustment mechanism via the one or the other end.

In another embodiment, a control device is integrated in the longitudinal frame element. Said control device is adapted to supply the actuators of the longitudinal elements with current and/or to control them. The control device is electrically connected to the actuators. Cables or electrical lines run inside the longitudinal element, for example. The electric cabling or supply is completely integrated in the frame element, for example. This allows an overall reduction of cable lengths. Furthermore, assembling the bed or the frame is less elaborate. The control device can be embedded or mounted within the frame carrier in order to be protected. For example the control device is coupled directly or indirectly to the adjustment mechanism and thus moveable along the frame carrier. Thus in general, the frame element 1 is formed such that there is a space for mounting the control device or such that the control device can be fixed. According to second aspect, a modular frame for an adjustable bed is disclosed, formed by two frame elements according to a first aspect, which are configured as longitudinal elements, and which is formed by at least one additional frame element configured as transverse element for a transverse side of the bed.

The transverse element can also be referred to as transverse assembly. This basically results in the above advantages. In particular, two frame elements basically identical in construction are used as longitudinal elements. In other words, all components of the longitudinal elements are identical in construction. Merely the actuators have to be mounted differently, in particular in view of their orientation or the like, for example. In particular, external forces acting on the frame are supported on both sides, improving the overall rigidity. Additionally, transverse connections and cable connections can be reduced or prevented and weight can be saved. Also, the modular frame can be transported or dispatched in a compact manner. In particular, all frame elements, i.e. transverse or longitudinal elements, can be arranged in parallel and packed. This allows savings in transport costs. As the drive technology is part of the frame element per se, no separate actuators such as linear actuators, which introduce forces between two such frame elements into lever mechanisms, are required.

According to one embodiment, the longitudinal elements can be secured to the frame element in such a way that a distance can be adjusted between the longitudinal elements. This allows for realization of different bed sizes with one and the same frame elements. This allows for a high diversity of varieties by means of the modular frame, with only a few carry-over parts being required.

According to another embodiment, opposite segments of the adjustment mechanisms of the longitudinal elements are connected via one or multiple support elements for supporting a mattress. Rigid panels, in particular wooden panels, can be used as support elements, for example. Said panels contribute to the rigidity of the frame, so that no additional support or transversal connections are required between the longitudinal elements in order to reinforce the frame. In another embodiment, the opposite segments of the adjustment mechanisms can be connected via one or a plurality of flexible support elements, such as a mat, for example. This flexibility allows a particular ergonomic rest, wherein a bent or curvature of a mattress has a more natural design. The flexible support element may optionally comprise supporting structures, such as supporting struts, by means of which the support element is partially secured on the segments of the adjustment mechanisms.

In another embodiment, a control device is integrated in the transversal element. Said control device is adapted to supply the actuators of the longitudinal elements with current and/or to control them. Upon mounting the transversal element to the longitudinal elements, the control device is electrically connected to the actuators. Cables run inside the longitudinal elements and the transversal element, for example. In addition, plug connectors are provided at the longitudinal elements and the transversal element, said connectors being contacted upon assembly of the frame elements. The electric cabling is completely integrated in the frame elements, for example. This allows an overall reduction of cable lengths. Furthermore, assembling the bed or the frame is less elaborate.

As explained above, the control device can also be integrated in the longitudinal element instead of the transversal element. Optionally, in both longitudinal elements a control device is mounted. In this regard, both control devices synchronize in order to parallelly control the respective actuators. Alternatively, only one control device in one of the two longitudinal elements is needed, which controls the actuators in both longitudinal elements. In another embodiment, two transversal elements are provided, so that a continuous or closed outer frame is formed for the bed.

According to a third aspect, an adjustable bed is disclosed, which comprises two frame elements according to a first aspect, which are configured as longitudinal elements for a longitudinal side of the bed. Opposite segments of the adjustment mechanisms are connected via one or more support elements for supporting a mattress.

Such a bed, which can also be referred to as bedstead as described above, is characterized by the fact that no additional frame elements are provided as transversal elements connecting the two longitudinal elements to a closed frame. The stability of the bed is ensured by the support elements, providing rigidity to the entire bed. Rigid pates are provided as the support elements, for example. Except for said support elements, the bed is free of transversal structures and transversal elements connecting the longitudinal elements. The omission of further frame elements contributes to a cost-effective production of the bed and savings in material.

Furthermore, different bed sizes can be realized by adjusting the spacing of the longitudinal elements.

According to a fourth aspect, a mounting method for an adjustable bed is disclosed. The mounting method comprises the steps:

providing two frame elements according to the first aspect, which are configured as longitudinal elements;

providing one or multiple support elements for supporting a mattress;

connecting one or multiple opposite supporting segments of the adjustment mechanisms of the longitudinal elements via the one or more support element(s). According to one embodiment, the mounting method comprises the steps:

providing at least one further frame element which is configured as a transversal element, and

connecting the longitudinal elements and the transverse element to a modular frame in such a way that the two longitudinal elements have a predetermined distance to one another.

According to another embodiment, two further frame elements are provided, which are configured as transversal elements. This allows forming a closed, modular frame in a way analogous to the one above. The mounting method according to the fourth aspect essentially allows the above-mentioned advantages.

Further advantageous embodiments of the invention are explained in greater detail by the exemplary embodiments with reference to the figures. In the figures, like or similar components are denoted with the same reference numerals (with or without suffixes). Features that have already been described using reference numerals are not necessarily provided with reference numerals throughout the figures.

The Figures show in:

Fig. 1 a perspective view of a longitudinal element according to a first exemplary embodiment,

Fig. 2 a side view of the longitudinal element according to Figure 1,

Fig. 3 a perspective view of an adjustable bed with longitudinal elements according to the first exemplary embodiment,

Fig. 4 a perspective view of a longitudinal element according to a second exemplary embodiment,

Fig. 5 a partial sectional view of the longitudinal elements according to Fig. 4,

Fig. 6 a side view of an adjustable bed with longitudinal elements according to a third exemplary embodiment,

Fig. 7 a partial sectional view of the adjustable bed according to Fig. 6,

Fig. 8 a perspective view of the adjustable bed according to Fig. 6,

Fig. 9 a perspective view of another adjustable bed with a flexible reclining area,

Fig. 10 a side view of the adjustable bed according to Fig. 9,

Fig. 11 a perspective view of the adjustable bed according to Figures 9 and 10, Fig. 12 a side view of another adjustable bed with longitudinal elements according to a fourth exemplary embodiment,

Fig. 13 a partial sectional view of the modular frame according to Fig. 12, Fig. 14 a flow chart of a mounting method, and

Fig. 15 to 18 show views of a frame element according to a further exemplary embodiment for an adjustable bed.

Figures 1 and 2 show views of a frame element 1 according to a first exemplary embodiment for an adjustable bed 25 (see Fig. 3). The frame element 1 is configured as a longitudinal element for a longitudinal side of bed 25.

Frame element 1 has a frame carrier 2 which is arranged in a stationary or fixed manner. The frame carrier 2 is formed by two longitudinal carriers 3. The frame carrier 2 is adapted to be mechanically coupled or connected to further frame elements of the frame 12, in particular transversal elements 13 (see Figure 3). To that end, fixing means 4 are provided on the ends of the frame carrier 2. In the exemplary embodiment, the fixing means 4 are fixing straps, partially engaging around a respective transversal element 13 and which can be screwed thereto.

The fixing means 4 can as well be of different configurations to establish a mechanical coupling to the transversal elements 13. In alternative exemplary embodiments, fixing means 4 are not a part of the frame element 1 and can be part of corresponding transversal elements 13 or separate components.

An adjustment mechanism 5 as well as two actuators 7a and 7b are arranged between the longitudinal carriers 3 of the frame carrier 2. The adjustment mechanism 5 and the two actuators 7a, 7b are therefore coupled to the frame carrier 2 and embedded in said carrier. The adjustment mechanism 5 and the actuators 7a, 7b serve to adjust a bed with respect to the reclining and seating positions thereof.

The adjustment mechanism 5 comprises multiple segments 6a to 6d, which are pivotally connected to one another as well as to lever arms 10a and 10b. Segments 6a to 6d and lever arms 10a and 10b are configured in a rigid manner. Segments 6a to 6d are configured to be connected with one or multiple support elements or support elements such as plates or the like, on which a mattress or the like can be arranged. The first segment 6a is provided for adjusting a head part of the bed 25 and is directly coupled to the second segment 6b via a first joint 8a in a pivoting manner. The second segment 6b is assigned to a center part of the bed and is guided along the frame carrier 2 on said carrier in a slideable manner. The third segment 6c is directly and pivotably coupled to the second segment 6b via a second joint 8b in a pivoting manner, on which the fourth segment 6d is supported via a third joint 8c. The fourth segment 6d is pivotally coupled to the first lever arm 10a via a fourth joint 8d, which is in turn rotatably supported on the second segment 6b via a fifth joint 8e. Segments 6c and 6d as well as the first lever arm 10a are adapted for the adjustment of a foot part of the bed 25. Furthermore, the first segment 6a is directly coupled to the frame carrier 2 via the second lever arm 10b. The lever arm 10b is in each case pivotally supported on the frame carrier 2 and the first segment 6a in a direct mechanical manner.

The rotary axes of the described segments 6a to 6d and of the lever arms 10a, 10b are parallelly offset to one another. Therefore, all segments 6a to 6d and of the lever arms 10a, 10b are thus movable and/or adjustable in a vertical plane. The vertical plane VE runs in a Z- X plane (see right-handed Cartesian coordinate system of Figure 1) between the two longitudinal carriers 3.

In the exemplary embodiment, segments 6a to 6d and lever arms 10a, 10b are rods, struts or hinged arms. The structural configuration of said elements is to be taken in a merely exemplary manner and can as well have other forms. Joints 8a to 8e are configured as rotary joints.

It is to be noted here, that a direct coupling, mounting or connection of two elements is to be understood, in the scope of this disclosure, as that no additional articulately- connected elements are present between the two coupled elements.

Actuators 7a, 7b are configured as linear actuators and in each case have one actuator housing 24. With respect to the X direction, each actuator housing 24 has a coupling portion on opposing ends in the form of openings for mechanical coupling to the adjustment mechanism 5, respectively. As an alternative, the coupling portions can be configured in a different way. In the exemplary embodiment, the actuator housings 24 are in each case configured symmetrically, however, this is not mandatory. In one coupling portion, actuators 7a, 7b are in each case pivotally supported on the second segment 6b via joints 9a, 9b, in particular rotary joints. Analogously to segments 6a to 6d, actuators 7a, 7b are pivotable in the vertical plane VE.

The first actuator 7a is coupled to the first segment 6a in such a way that said segment is pivoted about the first joint 8a upon actuation of actuator 7a. Here, a longitudinally- displaceable spindle of the first actuator 7a is directly mechanically coupled with the first segment 6a in a mechanically direct manner. This can be a rotatable spindle, on which a rotating nut arranged in the actuator housing 24 is axially displaced. Analogously, the second actuator 7b is directly connected to the third segment 6c in order to pivot said segment about the second joint 8b and the segment 6d coupled to the third segment 6c as well as the lever arm 10a.

If the respective segments 6a, 6c, 6d as well as the lever arm 10 are pivoted by means of the respective actuators 7a, 7b by means of displacing the respective spindles, actuators 7a, 7b per se are pivoted in the vertical plane VE. Actuators 7a, 7b in said vertical plane VE exert forces on the adjustment mechanism 5 in said plane. This ensures that the transmission of force from the actuators 7a, 7b to the adjustment mechanism is as favorable as possible. Therefore, the introduction of force of actuators 7a, 7b is effected in a movement plane of the adjustment mechanism 5. Coupling of actuators 7a, 7b to the respective segments 6a, 6c can in each case be effected via a joint, such as a rotary joint, or be rigid. Actuators 7a, 7b are in each case driven via an electric motor 11 and a worm gear, arranged laterally on the respective actuator 7a, 7b. To that end, actuator housings 24 of actuators 7a, 7b comprise flange portions 15, via which electric motors 11 can be secured on the actuators 7a, 7b. In the exemplary embodiment, the disposal of an actuator 11 with respect to an actuator 7a, 7b is the same relative to the respective actuator housing 24, wherein the actuators 7a, 7b are configured in such a way that the spindles thereof can be displaced in both directions along the frame element 1. This allows for the use of actuators 7a, 7b of identical construction, in which merely the spindles are mechanically coupled to the respective segments of the adjustment mechanism 5 (see joints 9a, 9b). As an alternative or in addition, each actuator 7a, 7b respectively comprises two flange portions 15 arranged opposite one another on both sides. Therefore, an electric motor 11 can be arranged on one of two sides on the respective actuator 7a, 7b or on its actuator housing 24. The electric motors 11 are configured to be controllable separately, in order to be able to realize different adjustments of adjusting mechanism 5. The adjustment mechanism 5 and actuators 7a, 7b with the electric motors 11 constitute a uniform assembly which is displaceable with respect to the frame carrier 2 as a unit in the X direction. To that end, the entire assembly is supported in the longitudinal carriers 3 in a displaceable manner, in particular by means of the second segment 6b. To that end, link guides are formed in the longitudinal carriers 3, in the form of a C-shaped profile, for example, in which the assembly is supported via rolls. In other words, the assembly is hung into the frame carrier 2. However, other measures are conceivable as well in order to guide the uniform assembly along the frame carrier 2, such as via sliders or rail systems.

As mentioned, the first segment 6a is connected exclusively to the frame carrier 2 via the second lever arm 10b. This allows for the realization of the above-described Wallhugging function. Now, upon actuation of the second actuator 7a, the first segment 6a protrudes outwards in Z-direction, wherein due to the second lever arm 10b the entire assembly is displaced to the right, with the adjustment mechanism 5 against the frame carrier 2 (according to Figure 2). If segment 6a is lowered, the entire assembly is displaced to the left. The frame element 1 is characterized by the fact that the frame carrier 2 as well as actuators 7a, 7b and the adjustment mechanism 5 form an integrated unit, as already described above. In other words, the frame element 1 is configured as a compact module and can directly be connected to support elements for supporting a mattress. Frame element 1 is to be considered as a modular element that can be coupled to further frame elements, as described in the following with reference to Figure 3.

Figure 3 shows an adjustable bed 25 with a modular-type structured frame 12. Here, two frame elements 1 according to Figs. 1 and 2 with two transversal elements 13 are composed to form the frame 12. The respective segments 6a to 6d of the two frame elements 1 are directly connected via support elements 14a to 14d. Support elements 14a to 14d are rigid panels, such as wooden panels, for example. The first support element 14a is configured as a head part. The second support element 14b is configured as a center part. The third and fourth support elements 14c and 14d are configured as foot parts. Frame elements 1 and transversal elements 13 allow for an arbitrary frame size or bed site to be adjusted. To that end, a distance of the two longitudinal elements to one another is selected accordingly. Depending on the desired distance, the longitudinal elements are fixed at a respective location to the transversal elements 13 via the fixing means 4. As an alternative, the transversal elements 13 can be designed to be adjustable in length, in the type of a telescopic rail, for example. On the whole, a plurality of bed variants having one and the same longitudinal and transversal elements can be realized. Furthermore, due to the configuration of actuators 7a, 7b, it is possible to use to frame elements 1 for both longitudinal sides which are basically identical in construction. Due to their coupling portions, the actuator housings 24, in particular, permit different connections. In order that, as indicated in Figure 3, electric motors 11 of both frame elements 1 are aligned to one another, pointing out to the middle of the bed, for example, merely actuators 7a, 7b of a longitudinal side are arranged in an interchanged manner at the other longitudinal side. In other words, actuator 7a is provided at the one longitudinal side for adjustment of the head part, while the identically-structured actuator is provided at the other longitudinal side for the adjustment of the foot part. Thus, actuators 7a, 7b are arranged as to be rotated by 180° around the Z-axis. As a result, frame elements 1 can be produced for both longitudinal sides by means of one and the same components. This is cost-effective in terms of production and assembly as well. This also applies to the case that actuators 7a, 7b can be coupled to electric motors 11 via the flange portions 15, as described above. As an alternative, both frame elements 1 are identically- structured (see Figure 8 for exemplification). In this case, both electric motors 11 protrude in the same direction from the frame carriers 2 of both longitudinal elements.

The foot part, the head part and the center part can be adjusted and/or displaced by means of the adjustment mechanisms 5 arranged on both sides and the actuators 7a, 7b of frame elements 1. In this case, forces are introduced laterally into the support elements 14a to 14d, thereby contributing to smaller bending moments and a more favorable transmission of force. Further supporting structures connecting the respective segments 6a to 6d of the adjustment mechanisms 5 are not required. Mechanisms or drives having actuators and motors are neither present in the intermediate region of the frame 11 between the frame elements 1. Figures 4 and 5 show two views of a frame element 1 ' according to a second exemplary embodiment. Frame element 1 ' according to the second exemplary embodiment is structured substantially analogously to the embodiment shown in Figs. 1 and 2.

In contrast to the first exemplary embodiment, however, actuators 7a', 7b' are provided, which are not mounted pivotably relative to the vertical plane VE on the second segment 6b, but stationary in a housing element 16. The housing element 16 is connected to the second segment 6b in an inflexible manner and guided displaceably relative to the frame carrier 2. Actuators 7a', 7b' are encapsulated in the frame element 16. The housing element 16 is supported on the longitudinal carriers 3 in a displaceable manner via rolls, wherein other guidance or mountings are suitable. Alternatively, the housing element 16 is guided on the frame carrier 2 via the second segment 6b and per se not directly mounted on the frame carrier 2.

Actuators 7a', 7b' respectively, move one piston element 17 in the X-direction along the frame carrier 2. For adjustment purposes, the respective piston element 17 of the first actuator 7a' is in contact with the first segment 6a, in particular with a projection rigidly connected to the first segment 6a, in order to transmit a pressing force to the first segment 6a and to pivot said segment about the first joint 8a. The same applies to the corresponding piston element 17 of the second actuator 7b' for adjusting the third segment 6c of the adjustment mechanism 5.

In analogy to the above, adjustment mechanism 5', actuators 7a', 7b' and the housing element 16 form an assembly, displaced as a whole via the lever arm 10b relative to the frame carrier 2 due to the coupling of the first segment 6a with the frame carrier 2 upon actuation of the first actuator 7a'. Realization of the Wallhugging function is possible as a result.

In the second exemplary embodiment, no tensile forces, only pressure forces are transmitted to the segments 6a and 6c by means of actuators 7a', 7b'. This allows releasing an additional safety function in case of an accident, damage or crash. The safety function relates to a possible case of squeeze between the stationary frame carrier 2 and the mobile segments 6a, 6c, 6d as well as lever arms 10a, 10b. In the case that body parts, such as the fingers of a person would be located between the described components, for example in a downward displacement when lowering the head part, merely the weight forces of the support elements 14a, 14b, 14c and/or 14d as well as of a mattress and external forces due to the load on the bed act in locations where squeezes or crushes are possible.

The explanations regarding the first exemplary embodiment in view of the advantages, functions and features apply analogously, for example relating to the fixing elements 4, the modular frame 12 or the adjustable bed 25 (e.g. as indicated in Figure 4 by means of transversal elements 13, for example). This also applies to the arrangement of actuators 7a', 7b' in terms of using two frame elements 1 '. For example, actuators 7a', 7b' may have actuator housings according to the above configurations, without coupling portions being provided. In both longitudinal elements corresponding to the above configurations, actuators 7a', 7b' can be interchanged in such a way that the electric motors always point to the center. As an alternative, two flange portions are provided on each actuator 7a', 7b'. Figures 6 to 8 show views of another adjustable bed 25' with another modular frame 12', having two frame elements 1 ' ' according to a third exemplary embodiment. The frame element 1 ' ' differs from the frame elements 1 and 1 ' described in the foregoing, wherein the above-described advantages and functions are essentially maintained. In turn, the frame element 1 " is configured as a longitudinal element for a longitudinal side of the frame 12".

A frame element 1 " comprises an inflexible frame carrier 2". The frame carrier 2" is configured as an elongated, at least partially hollowed housing body. The frame carrier 2" is arranged and mounted to transversal elements 13' on its opposite ends (see Figure 8). This is achieved by means of fixing means 4". In this regard, the explanations already described in view of the first two exemplary embodiments of frame elements 1 and 1 ' apply.

The frame element 1 " comprises an adjustment mechanism 5", which comprises a first segment 6a", a second segment 6b", a third segment 6c" and a fourth segment 6d". The adjustment mechanism 5" further comprises a first lever arm 10a", a second lever arm 10b" and another lever arm 10c". Lever arms 10b" and 10c" are directly and pivotally coupled to the fourth segment 6d" and the frame carrier 2", respectively. Segments 6b" and 6d" are pivotally connected in a way analogously to the already described exemplary embodiments by means of joints 8b" and 8c". In contrast to the above-mentioned exemplary embodiments, the first segment 6a", however, is not pivotally-connected to the second segment 6b", but directly and pivotally via a first joint 8a" to the frame carrier 2". The first joint 8a" is also guided on the frame carrier 2" in a displaceable manner in such a way that said joint is moveable along the frame carrier 2" in the X-direction. Therefore, the first segment 6a' ' is displaceable relative to the frame carrier and can simultaneously be adjusted. The axial displaceability allows the Wallhugging function, as described above. Displaceability of the first joint 8a" is realized in the exemplary embodiment according to Figures 6 and 7 via a rail guidance on the frame carrier 2". However, other configurations are conceivable, e.g. by means of a link guide. As an alternative, the first joint 8a" can also be supported on the second segment 6b" in a displaceable manner, as will later be described by means of Figures 10 and 11.

The further segments 6b" to 6d" are not arranged to be displaceable relative to the frame carrier 2", wherein the second segment 6b" is fixedly connected to the frame carrier 2". Thus, the second joint 8b", which, inter alia, allows adjustment of the foot part, is stationary. The third segment 6c' ' and the fourth segment 6d' ' are merely pivotally moveable in the vertical plane (X-Z-plane) relative to the frame carrier 2".

The frame element 1 ' ' has two actuators 7a' ' and 7b "driven by to electric motors 11.

Actuators 7a", 7b" are configured analogously to the above-described actuators 7a', 7b' of the frame element 1 ' . In contrast to the above-described exemplary embodiments, actuators 7a", 7b" are fastened to the frame carrier 12" in a stationary manner. Actuators 7a", 7b" are encapsulated or embedded in the frame carrier 2" of hollow design, however, this is not necessarily the case.

Analogously to the second exemplary embodiment, actuators 7a", 7b" drive piston elements 17" to partially adjust the segments 6a or 6c.

As described above, segments 6a" to 6d" of the respective opposite frame elements 1 " are connected via support elements 14a" to 14d" (see Figure 8). In this case, support elements 14a" to 14d" are configured as rigid plates. As the second segment 6b" is in each case rigidly connected to the respective frame carrier 2", additional reinforcement of the two frame elements 1 " is achieved by means of the second support element 14b". For the Wallhugging function and the activation, the first segment 6a" is directly coupled to the frame carrier 2" via the second lever arm 10b". If now the first segment 6a" is displaced to the left by means of the first actuator 7a' ' according to Figures 6 and 7, the distance of the joint 8a" to the second segment 6b" in the X-direction increases, thereby creating or increasing a gap between the first segment 6a" and the second segment 6b" in the X- direction. At the same time, segment 6a' ' is pivoted about the joint 8a' ' and actuated.

In the exemplary embodiment, the gap is covered by means of another support element 19 connected to the first support element 14" in an articulated manner. The further support element 19 is directly coupled to the first support element 14a" via another joint 18. In this case, rotational axes of the further joint 18 and the first joint 8a" are spaced apart and do not coincide with one another. The further support element 19 detachably rests on the second segment 6b" with one end and is correspondingly displaced together therewith upon displacement of the first segment 6a". As an alternative, the further support element 19 rests on the frame carriers 2" . As the rotary described, do not coincide and are parallelly offset, the further support element 19 is also activated upon activation of the first segment 6a' ' . However, an activation angle of the first segment 6a' ' is greater than an activation angle of the further support element 19, relative to the X-direction. The other support element 19 is particularly close-fitting with the bending line of a mattress arranged on the support elements 14a" to 14d". This prevents an unfavorable kink in the mattress. Moreover, this contributes to a high conformity with the mattress and high reclining comfort.

As described, the fourth segment 6d" is in each case directly coupled to the frame carrier 2" via the lever arms 10a" and 10c". Each of the two lever arms 10a" and 10c" is directly pivotally connected to the fourth segment 6d" and directly pivotally supported on the frame carrier 2" via joints 20a, 20b. The two joints 20a, 20b are furthermore guided in link guides along the frame carrier 2" in the X-direction.

If actuator 7b" is actuated now, the respective piston element 17" displaces the joints 18a, 18b and therefore the rotary axis of lever arms 10a", 10c" along the frame carrier 2. This forcibly leads to an outwardly-protruding third segment 6c" and fourth segment 6d" and allows adjustment of the foot part 25 ' . As an alternative, merely one lever arm is provided instead of the two lever arms 10a" and 10c". In another alternative, adjustment of segments 6c" and 6d" is realized analogously to the described exemplary embodiments according to Figures 1 to 5. Furthermore, it is to be noted that both frame elements 1 " are identically-structured, as indicated above. As a result, both electric motors 11 are orientated in the same direction.

Figures 9 to 11 show views of another adjustable bed 25 ' ' which basically corresponds to bed 25' of the exemplary embodiments described above. In contrast to the bed 25' according to the above exemplary embodiment, segments 6a" to 6d" of the adjustment mechanisms 5" are connected via a flexible support element 21. The flexible support element 21 is not subdivided into individual, separate portions connecting two opposite segments of the adjustment mechanisms 5", but is to be considered as one element covering all segments 6a" to 6d" of the adjustment mechanisms 5" and/or at least partially covering them. Here, the flexible support element 21 is connected to each of the segments 6a" to 6d". To that end, the support element 21 has multiple supporting struts 22 arranged in the flexible support element 21 or are arranged thereon, for example on a lower side facing the segments 6a' ' to 6d' ' of the support element 21. The supporting struts 22 can also be referred to as transverse struts. The flexible support element 21 is fixedly connected to the segments 6a" to 6d" of the adjustment mechanism 5" (see Figures 10 and 11) via some of these supporting struts 22. This ensues via screw connections, but other types of fixings are also suitable as well. The support element 21 contributes to a more ergonomic, altogether rounder reclining area for a mattress as well as to higher comfort when in a reclined position. In the exemplary embodiment, the flexible support element is configured as a mat, a tarpaulin for example. The tarpaulin is configured as a plastic cover, which can be reinforced by so- called weltings on the edge. As an alternative, other configurations are conceivable as well, such as a textile mat or a tarpaulin. This may be a fabric cover as in the case of a convertible top. In other alternatives, a canvas can be used that has a fabric. Said fabric may be impregnated in order to repel water. Basically, various materials are suitable for the flexible support element 21, the elements allowing for a bending line of the support element 21 that is freely formable.

In exemplary embodiments (not shown), the supporting struts 22 comprise one or more massaging elements. The massaging elements can be so-called eccentric massaging elements or vibrating massaging elements. Thus, the flexible support element 21 can additionally be provided with a massaging function. The electronics required for massaging elements can be integrated in one or multiple of the frame elements 1 ' ' and/or the transverse elements 13". Due to the fact that no additional drive technology or supporting structures are provided between the frame elements 1 ", a lot of space and construction space is provided, which can be used for the massaging elements and control thereof. As an alternative, massaging elements can also be arranged in additional supporting struts or transversal struts, which have a larger diameter than the above-mentioned support struts 22. The flexible support element 21 can also be configured in multiple parts, such as the described plate, for example.

It should be noted at this point, that the flexible support element 21 as well as the described features and alternatives can also be used in the frame elements 1 , 1 ' as well as with the frame elements yet to be described later. The flexible support element as well as the described features and alternatives can also be used regardless of the described frame concepts, such as the described frame elements and frames.

Figs. 10 and 11 further show an alternative option for displacing the first joint 8a" of the first segment 6a' ' along the frame carrier 2' ' . The second segment 6b"is configured in the type of a telescope, with the joint 8a" located on an extractable telescopic part and this way can be displaced as to be axially-guided along the frame carrier 2" upon actuation of the actuator 7a". Figures 12 and 13 show two views of another adjustable bed 25"' with another modular frame 12' ". The modular frame 12' " comprises frame elements " according to a fourth exemplary embodiment, which, in turn, are configured as longitudinal elements for longitudinal sides of the frame 12' ". The above explanations regarding like or equivalent elements, advantages and functions of the descried beds, frames and frame elements essentially apply.

The frame element " comprises an adjustment mechanism 5' " in which segments 6a' " to 6d' " are connected via joints 8a' " to 8c' " in analogy to the above-described exemplary embodiments. The adjustment mechanism 5' " further comprises lever arms 10a' " to 10c' " in analogy to the exemplary embodiment described by means of Figs. 6 and 7.

In contrast, frame element 1 " ' comprises two actuators 7a' ' ' and 7b" ', which can be referred to as so-called inline actuators. Actuators 7a' " and 7b" ' comprise electric motors 11a' " and l ib" ', which are in each case arranged in such a way that a drive axis of each electric motor 11a' " and l ib' " runs in each case parallel to a longitudinal extension direction ofthe frame carrier 2 " ' . In other words, drive axes o f the two electric motors 11a" ' and 11 b " ', possible transmission axes and the operative directions of actuators 7a" ' and 7b" ' in particular axes of spindles, run coaxially.

The frame element 1 " ' comprises two frame parts 23 a and 23b which per se are rigidly- connected and displaceably guided on the frame carrier 2" ' . The two frame parts 23a, 23b can also be configured in one piece as one frame part. Frame parts 23 a, 23b can be configured as a hollow housing. Frame parts 23a, 23b are in rigid connection with the second segment 6b' " of the adjustment mechanism 5 " ' . The first actuator 7a' ' ' is mechanically connected to the longitudinal carrier 2" ' and actuates a spindle nut which is fixedly connected to the first frame part 23a. This way, the second segment 6b' " can be displaced and adjustment of the head part can be realized. The two lever arms 10a" ' and 10c' " are supported on the second frame part 23b to be displaceable. Here, the two lever arms 10a' ", 10c" ' are arranged analogously to the above-described exemplary embodiment. Here, joints 20a' " and 20b' ", by means of which lever arms 10a" ', 10c" ' are mounted on the frame part 23b, are axially displaced by actuation of the second actuator 7b " ' . In the exemplary embodiment, a spindle is driven upon actuation of the second actuator 7b" ', the spindle displacing a spindle nut supported in the frame part 23b. The spindle nut is connected to a block in a mechanically-rigid manner, the block mounting the two joints 20a' ' ' and 20b" ' . As a result, the segments 6c'" and 6d' ' ' assigned to the foot part of the

adjustment mechanism 5 ' " can be adjusted.

The adjustment mechanism 5" ' and the two frame parts 23a, 23b form a uniform assembly which is displaceable with respect to the frame carrier 2" ', in a way analogous to the one above. Here, the first segment 6a' " is directly coupled to the frame carrier 2' " by means of the second lever arm 10b' ", so that the Wallhugging function and the displacement of the assembly alongside the frame carrier 2" ' is allowed.

Figures 15 to 18 show views of a frame element 1 according to a further exemplary

embodiment for an adjustable bed. The frame element 1 is structured substantially

analogously to the embodiment shown in Figs. 1 and 2. Therefore, most features of Figures 1 and 2 correspond to the features shown in Figures 15 to 18 and are not explained and/or referenced in the Figures again.

The adjustment mechanism 5 is designed similarly to Figures 1 and 2 and comprises segments 6a to 6d, which are pivotally connected to each other via joints 8a to 8c. The second segment 6b, e.g. the base segment associated to a buttocks area of a person laying on a bed, is rigidly fixed on a sliding carrier 26 of the adjustment mechanism 5. The sliding carrier 26 can also be named sliding carriage and supports the segments 6 and other components of the frame element 1. The fourth segment 6d of the adjustment mechanism 5, as already explained above, is pivotally coupled to the first lever arm 10a via a fourth joint 8d. The first lever arm 10a is directly pivotally coupled to the sliding carrier 26 and thus to the second segment 6b via the fifth joint 8e, which is arranged in the carrier 26 and thus not visible in the Figures (see dotted line). The frame element 1 has a frame carrier 2, as shown in Figures 17 and 18, wherein Figure 18 is a sectional view in a Y-Z plane. The frame carrier 2 is an essentially U-shaped profile which is open to the top. In other words, the frame carrier 2 is closed from three sides. In the shown embodiment, the frame carrier 2 is made from Aluminum, in particular in an extrusion process. Alternatively, the carrier 2 can be made of another material and/or process. Rigidly fixed to the frame carrier 2, the frame element 1 comprises fixing means 4 at both

longitudinal ends 31 (3 la, 3 lb). In the shown embodiment, the fixing means 4 are construed as mounting plates in order to fix the frame element 1 to transversal frame elements and/or other elements. The fixing means 4 are mounted to the frame carrier 2. As already explained, the fixing means 4 can alternatively designed differently and/or be integral parts of the frame carrier 2. It is noted, that Figures 15 and 16 fail to show the carrier 2 for sake of visibility of the adjustment mechanism 5.

The first segment 6a of the adjustment mechanism 5 is directly coupled to the frame carrier 2 via the second lever arm 10b. The lever arm 10b is in each case pivotally supported on the frame carrier 2 and the first segment 6a in a direct mechanical manner. In the shown embodiment the lever arm 10b is coupled to the fixing means 4 at the rear longitudinal end 31 a of the frame element 1.

The actuators 7a, 7b are linear actuators as above and comprise an electronic motor 11. The actuators 7a, 7b comprise rotable spindles 27. Each actuator 7a, 7b is coupled to the adjustment mechanism 5 in two points. Each actuator 7a, 7b is coupled pivotally to the sliding carrier 26 via joints 9a, 9b. For example, a housing 24 of an actuator 7a, 7b, which is the housing of the electronic motor 11 or comprises the electronic motor 11 , is connected pivotally to the sliding carrier 26. Further, each actuator 7a, 7b comprises a spindle 27 which is coupled pivotally to a connecting part 28 in a joint 29. In the shown embodiments, the spindles 27 are coupled to spindle nuts supported pivotally on the connecting parts 28. The connecting parts 28 are rigidly coupled to the first or third segment 6a or 6c respectively.

The electronic motors 11 are arranged coaxially to the spindles 27. In general words, the actuators 7a, 7b and its electronic motors 11 are arranged on the sliding carrier 26 and extend along the X-direction. The electronic motors 11 drive the respective spindle 27. Thus, the spindles 27 are rotated around the X-axis, thereby transmitting a force via the connecting parts 28 in order to move the first and/or third segment 6a, 6c along the joints 8a and 8b. The actuators 7a, 7b move the joints 29 in the X-direction. In the shown embodiment, both actuators 7a, 7b are identically. The sliding carrier 26 and thus the whole adjustment mechanism 5 is slidably moveable along the X-direction relative to the frame carrier 2.

The sliding carrier 26 and the adjustment mechanism 5 constitute a unit being displaceable. To be displaceably supported on the frame carrier 2, the sliding carrier 26 comprises rolls 30 on both lateral sides. Alternatively, the sliding carrier 26 comprises sliding elements. In the sliding carrier 2, there are formed two opposing sliding channels 31, e.g. link guides, in which the rolls 30 are supported. Thus, a very good support and movability of the adjustment mechanism 5 on and along the frame carrier 2 is achieved.

By the coaxial arrangement of the motors 11 , a very compact construction can be achieved. As can be seen from Figure 17, the actuators 7a, 7b and essentially the sliding carrier 26 are arranged within the frame carrier 2 of the frame element 1.

Since the frame carrier 2 is closed from three sides, mechanics and actuators 7a, 7b are embedded and protected from access.

As can be further seen in Figure 18, no element of the frame element 1 protrudes laterally beyond outer lateral sides 32 of the frame carrier 2, e.g. in a direction orthogonal to the vertical plane VE or in the Y-direction.

Optionally, a control device 33 is mounted on the sliding carrier 26 and is thus coupled to the adjustment mechanism 5. The control device 33 is integrated in the frame carrier 2, e.g. no visible from outside.

Further, optionally and not shown in the drawings, the frame element 1 may comprise means or elements for fixation of a foot stand. For example, the foot can be mounted on the bottom side 34 of the frame element 1 or the frame carrier 2 (see Figure 18). Further optionally, the frame carrier 2, e.g. the open profile, may be covered or enclosed by one or more additional cover elements in order to prevent an unintended access to moving components, thus it is possible to protect the user from dangerous pinching points.

Additionally such covering can be used to improve the visual appearance of the product.

Further, a prevention of a system demolition, failure, or breaking caused by a pinched object such as a blanket can be achieved.

Exemplary, two or more telescope units 35 are used to close the gap on top of the frame carrier 2 between the moveable sliding carrier 26 and/or the adjustment mechanism 5, e.g. the moving unit, and frame carrier 2. A telescope unit hast two or more telescope parts, which are coupled to each other and can be moved relative to one another between a fully expanded and a fully pushed-together state. The telescope parts may be plates or bars. In this regard, each telescope unit 35 is coupled at one an end to the moving unit and with another end to the frame carrier 2, e.g. at the longitudinal ends 31a and 3 lb. Depending on the movement of the moving unit the telescope units 35 expand/elongate to cover the opening of the frame carrier 2.

Optionally the telescope units 35 and/or the telescope parts can be guided along the frame carrier 2, e.g. in one or more guiding slots 36 of the frame carrier 2 (see Figure 18). For example, for each telescope part there is a separate guiding channel. Thus, high forces on the cover can be supported.

As alternative covering, rubber sealing lips can be arranged on top of the frame carrier 2. For example, a rubber sealing lip is arranged on each lateral side of the frame carrier 2, such that a small gap between the lips remains in the middle of the top side. By the movement of the moving unit the lips are pressed towards the lateral sides, e.g. like plowing.

As further alternative covering, roller blinds or convoluted rubber gaiter are used to cover the gap on the top side. In general, the movement of the moving unit, e.g. the sliding carrier 26, adjusts the covering. Further optionally, the frame element 1 according to Figures 15 to 18 enables customization and/or personalization of the frame element 1. The frame element 1 can be coupled with self- adhesive sticking bands, magnetic bands or the like. In this regard, the frame element 1 or the frame carrier 2 is accordingly adapted, e.g. comprises a magnetic material or the like.

Alternatively or additionally, the frame element 1 comprises a coupling mechanism or coupling elements such that a customizable or personalized element can be mounted on the frame element 1. The personalized element can be a decor band, a shroud or a covering for the frame element 1, at least for the outer sides 32 of the frame carrier 2. Exemplary, as shown in Figure 18, the frame carrier 2 comprises grooves 37 or shapes in order that the personalized elements to be mechanically connected to the frame carrier 2. The coupling mechanism may be built as a clip-on mechanism such that a personalized element can easily be clipped onto or snapped onto the frame carrier 2. In other embodiments, the frame carrier 2 comprises a latching mechanism with engages with a counter latching mechanism of the personalized element.

Thus a user can change the appearance of the frame element 1 and or a bed 25 as described above.

Alternatively, the frame element 1 and or a bed composed of such frame elements 1 and transversal elements as described above, do not need an additional shroud in order to look like stand-alone furniture. In order words the frame element 1 is designed to be free of shroud elements like wooden or metal parts to cover the frame elements.

It should be noted at this point that the features described according to Figures 1 to 13 and 15 to 18 of the frame elements 1 to 1 " ' of the modular frames 11 to 1 Γ " or the beds 25 to 25 " ' , respectively, can be combined or replaced. Thus, adjustment of the segments 6c and 6d according to Figures 1 to 5 can as well be effected by adjustment according to Figures 6 to 13 and 15 to 18. The connections via plates or a flexible support element 21 of the segments 6a" to 6d" 'described using Figures 6 to 12 also apply to the exemplary embodiments according to Figures 1 to 5 and 15 to 18. Furthermore, actuators 7a'", 7b' " described by means of Figures 12 and 13 can also be used in the other exemplary embodiments. As further examples, the features relating to the covering, the control device, the frame carrier, the clip-on function, the shroudless design and/or the coaxial arrangement of the electronic motors according to Figures 15 to 18 can be combined with other exemplary embodiments. In the above-described exemplary embodiments of adjustable beds 25 to 25 " ', modular frames 12 to 12' " are provided, comprising two transversal elements 13 to 13" ' in addition to two frame elements 1 to 1 ' " , in order to form a closed frame.

In alternative exemplary embodiments (not shown herein) no transversal elements 13 to 13' " are provided. In such adjustable beds, frame elements 1 to 1 " ' are in each case connected via respective support elements for supporting a mattress, as described above. In other words, such beds are free of transversal elements or transverse supporting structures. The support elements enable a rigidity of the bed. In further alternative exemplary embodiments (not shown herein), two frame elements 1 to Γ" are connected to a U-shaped frame, via a transversal element, on a foot end or a head end, for example. Optionally, a control device is installed in the transversal element, as described above. Figure 14 shows a flow chart for an assembly method for a bed, in particular a bed 25 to 25 " ' according to one of the exemplary embodiments described above.

In a first step S 1 , two frame elements 1 , 1 ' , 1 " or 1 " ' according to one of the above- described exemplary embodiments are provided, which are configured as longitudinal elements for in each case one longitudinal side of the bed.

In a second step S2, two further frame elements are provided, which are configured as transversal elements 13, 13' or 13" ' according to one of the above-described exemplary embodiments. In a third step S3, the longitudinal elements and transversal elements are assembled to a frame, a distance adjustable between the longitudinal elements.

It is possible to adjust the distance by means of described fixing means 4, 4" ' of the frame elements, for example.

As an alternative, it is conceivable that the transversal elements are configured to be adjustable in length. The transversal elements are configured in the type of a telescope, for example.

In further optional steps, a flexible mat 21 or one or multiple support elements 14a to 14d or 14a" to 14d" according to above configurations are mounted.

In an alternative embodiment, a transversal element is not used, so that the respective bed merely has the two longitudinal elements via which the bed is supported on a floor.

In further, alternative embodiments, one transversal element is used, so that a U-shaped, open frame is formed together with these two longitudinal elements.

List of reference numerals

1 to 1"' frame element

2, 2", 2"' frame carrier

3 longitudinal carrier

4,4" fixing means

5 to 5"' adjustment mechanism

6a to 6d segment

6a"to6d" segment

6a"'to6d"' segment

7a to 7b'" actuator

8a to 8e joint

8a" to 8c" joint

8a'" to 8c'" joint

9a, 9b joint

10a, 10b lever arm

10a" to 10c" lever arm

10a'" to 10c'" lever arm

11, 11"' electric motor

12, 12', 12"' frame

13, 13', 13"' transversal element

14a to 14d support element

14a" to 14d" support element

15 flange portion

16 housing element

17, 17" piston element

18 further joint

19 further support element

20a, 20b joint

20a'", 20b'" joint

21 flexible support element supporting strutsa, 23b frame part

actuator housing to 25" ' bed

sliding carrier spindle connecting part joint

roll

longitudinal end outer lateral side control device bottom side telescope unit guiding slot grooves to S3 step

vertical plane