Patent Application
20240057779
This invention relates to a motorized functional fitting for a box spring bed.
The box spring bed comprises a bed frame with two frame side parts extending in a bed longitudinal axis as well as with head and foot frame parts transversely extending between them at a head end and at a foot end and with a central plate extending in a lying plane between or above side parts. A head plate is placed pivotable about a head plate pivot axis transversely extending to the bed longitudinal axis at a head end directed to the head end of the bed frame. Moreover, a foot plate is placed pivotable about a foot plate pivot axis that is also transversely extending to the bed longitudinal axis. The plate-shaped configured central plate, the head plate and the foot plate together form a lying surface for placing a mattress.
The functional fitting comprises a longitudinal beam extending along a beam longitudinal axis that is configured for connection with the box spring bed. The longitudinal beam is preferably configured as a square or rectangular profile. A lift-up frame is rotatably hinged at a point of rotation to the longitudinal beam. Finally, a linear drive extending or acting between the longitudinal beam and the lift-up frame is provided, which the linear drive converts a rotatory movement of an electric motor to a translation movement of a lifting tube. This linear drive is preferably configured as a linear drive. This being, the lifting tube is rotatably connected to the lift-up frame in such a manner that, upon actuation of the linear drive, the lift-up frame can be moved from a lowered rest position to a lift position that forms an acute angle with the beam longitudinal axis of the longitudinal beam and that is preferably continuously adjustable for lifting or lowering the head part or the foot part from or into the lying plane.
The functional fitting is thus attached to the bed frame of the box spring bed and serves for moving the head plate and the foot plate from the lowered rest position in which they extend in a plane with the horizontal lying plane into lift-up positions raised from this lying plane.
The bed frame is thus formed of two frame side parts extending at a parallel distance from one another along the bed longitudinal axis that are connected to each other at the head end and at the foot end by a head frame part and a foot frame part for forming a usually rectangular closed frame that is set either directly on the floor or on drawers or on a chassis, on feet or the like that keep the frame at a distance from the floor. The box spring bed mattress can be laid onto the lying plane formed by the central plate, the head plate and the foot plate.
The functional fitting is connected, in particular screwed to the bed frame, in order to motorically move the head plate and the foot plate.
This being, the longitudinal beam extends from the head frame part to the foot frame part, is thus attached to the bed frame at the upper end and at the lower end of the bed frame. Furthermore, the longitudinal beam receives in its middle a double drive, the motorized operated lifting tubes of which actuate a lift-up frame for pivoting the head part and a lift-up frame for pivoting the foot part. In the prior art, the linear drives are thus configured as double drives that are arranged in the middle of the longitudinal beam and wherein the double drives are attached with a rear end to the longitudinal beam and engage, are thus rotatably hinged, on the head plate lift-up frame and on the foot plate lift-up frame by the movable lifting tube that is longitudinally displaceable relative to a fixed external tube. In the prior art, the longitudinal beam thus extends substantially along the entire bed longitudinal axis, is thus practically as long as the length of the bed frame and absorbs the major forces from the lift-up frames and from the linear drives.
Consequently, the longitudinal beam has to be configured adequately stable in order to be able to absorb these forces which preferably ensues with a configuration of the longitudinal beam as a rectangular profile or as a square profile that has a particularly good equatorial mass moment of inertia against bending stress.
Such a functional fitting for a box spring bed is known, for example, from the document DE 10 2016 116 256 A1. The longitudinal beam disclosed in this document is configured as a continuous profile rail that extends from the head end to the foot end of the bed frame. The lift-up frames, occasionally also designated as erecting levers, are also rotatably hinged with their rear end to the longitudinal beam and pivotable by the central double drive relative to the longitudinal beam from the lowered horizontally extending rest position to the raised lift position, thus forming an angle with the beam longitudinal axis of the longitudinal beam. This being, the lift position can usually be adjusted with the beam longitudinal axis in a range between 0° and approximately 45°.
But these generic functional fittings have the disadvantage that the length of the bed determines the length of the longitudinal beam and of the profile rail thereof. Thus, different profile rails or different functional fittings have to be stored with different longitudinal beams for each bed length and for each bed model. This causes a significant number of models because there are currently no standards for box spring beds. The induced increase in storage costs is not negligible.
The transport of the functional fittings is also a problem because these functional fittings are usually significantly longer than usual pallet dimensions that are normally 80×120 cm. Insofar, special dimensions are required in storage facilities which is costly.
Starting from these disadvantages, the object/the technical problem underlying the invention is to at least partially avoid the disadvantages occurring with the generic functional fittings and in particular to provide a particularly variable motorized functional fitting, easy to transport but simultaneously very sturdy.
This aim is already achieved by the characteristics of the independent claims. Preferred but non-mandatory characteristics are indicated in the subordinate dependent claims.
In the most abstract embodiment, this aim is already achieved in that the longitudinal beam comprises a—in an outer mounting position—front end that is configured for being attached to the head frame part or to the foot frame part. Moreover, the longitudinal beam comprises an inner front end, that is opposite to the outer front end and in the mounting position integrated into the bed frame, that is configured for being attached to the central plate. Furthermore, the drive is placed laterally besides the longitudinal beam, is thus attached thereto, and the lift-up frame is rotatably hinged on the longitudinal beam in a mounting position at a lower attachment end. This means that the lift-up frame is rotatably hinged on the longitudinal beam at its outermost end in order to obtain the largest possible lever arm. Finally, the relatively movable lifting tube of the linear drive engages on the lift-up frame at a pivot end spaced from this fixing attachment end along a lift-up frame longitudinal axis. Due to this design, a particularly efficient force development of the lifting tube is placed onto the lift-up frame with a particularly long lever arm so that, compared to existing functional fittings, linear drives with one third less power can be used.
According to the invention, the longitudinal beam is configured to be attached with the bed frame either directly, or indirectly at the head end or at the foot end with the in mounting position outer end that is directed to the bed frame, and at an opposed end it is configured to be attached to the central part.
The linear motor rotatably hinged with its lower motor end at the in mounting position outer front end and the lift-up frame rotatably oriented with its lower attachment end to the inner front end thus preferably form, in lift position, an approximately isosceles triangle with the longitudinal beam although this is not mandatory for the effectiveness of the invention.
The rotatable hinging preferably takes place with fork heads that are placed in particular on the linear motor at the rear motor end and on the front lifting tube, or else with profiles that rotatably engage on an axle arranged in the longitudinal beam.
Hence, the functional fitting is built-up according to the invention so that the lower motor end of the linear drive is oriented in the mounting position to the outer front end of the longitudinal beam and the lower attachment end of the lift-up frame is oriented rotatably hinged to the inner front end of the functional fitting.
The lifting tube of the linear drive that is housed relatively movable in the housing of the linear drive is rotatably hinged as close as possible at the upper end of the lift-up frame so that a particularly efficient force development of the thus formed toggle lever is achieved while the functional fitting is simultaneously very flat in the lowered rest position.
For a bed with a separately relatively movable head plate and foot plate, the matter is thus of a divided longitudinal beam that is screwed to the bed frame with its in mounting position outer front end directed towards the head end or the foot end of the bed frame and that is attached to the central plate with a front end directed thereto.
This fastening to the central plate is preferably carried out on the central plate by bracket profiles laterally attached to the longitudinal beam that are laterally attached to the longitudinal beam with a vertical leg extending in the mounting position and that are screwed on the underside to the central plate with a horizontal leg extending at a right angle to this vertical leg. This being, these bracket profiles that are preferably made of steel sheet simultaneously have a stabilizing effect on the central plate in order to avoid a sagging when a person takes place.
A particularly harmonious development of force and thus a particularly low performance of the electric motor of the linear drive is required when a rear motor end of the linear drive engages, in particular is rotatably hinged at the outer end of the longitudinal beam and the attachment end of the lift-up frame at the inner end of the longitudinal beam. The greatest motor power of the electric motor is required for lifting the lift-up frame from the lowered rest position because the vertical force for lifting is then the lowest. When these first 10 to 15 percent of the motion range are overcome, the stress required for the electric motor is only low.
For the lowest possible power delivery of the linear drive, it is advantageous when the rear end of the linear drive, thus the end with the housing and the electric motor, is attached, in particular is rotatably hinged, as low as possible on the longitudinal beam. Therefore, for a particularly preferred embodiment, an additional retaining block is provided on the inner side on the head side part or on the foot side part that extends vertically in the mounted position, retaining block to which the rear end of the linear drive can be attached or is attached. This retaining block is occasionally designated as a fastening beam, a fastening block, a cross beam or a crossbar that is arranged transversely extending to the longitudinal axis of the bed, preferably on the inner side of the head frame part or of the foot frame part at the lower ends thereof ending with the lower edge of the frame side part between the frame side parts and that forms a support edge arranged offset inwards from the bed frame to which the front ends of the functional fitting can be attached.
Preferably, a bracket profile, that can be fitted on this fastening beam or fastening block and that can be screwed thereto is rotatably attached at the rear end by a rear fork head.
Preferably, such fastening beams or fastening blocks are provided on the head side part as well as on the foot side part in order to realize the lowest possible force application point of the rear attachment end of the linear drive, in particular of the rear fork head. A further optimization of the force path is realized in that the front end of the linear drive, in particular the front end of the relatively movable lifting tube, engages as close to the top as possible on the lift-up frame, thus at a point that is as far away as possible from the lower attachment end of the lift-up frame on the longitudinal beam. Due to this configuration of the functional fitting, the highest possible gradient of the linear drive is already achieved in the lowered rest position so that, compared with the prior art, a lower level of power of the electric motor of the linear drive is required.
In the particularly preferred embodiment, the front end of the linear drive, in particular the relatively movable lifting tube, engages on a cross beam that extends between two fork-shaped widening profile sections or profile supports of the lift-up frame. This makes possible a particularly low setting of the point of rotation of the rear end of the linear motor and thus a relatively flat structure of the bed or of the bed frame of approximately 7 to 11 mm so that drawers or substructures can still easily be placed under the proper bed frame without significantly heightening the structure of the overall system.
According to the invention, the longitudinal beam thus constitutes with the linear drive and the lift-up linkage an own functional component that can be attached to the base frame or to the mounted bed frame with a seating plate. Thus, compared to the prior art, the functional fitting according to the invention can, be much better transported, packed and handled by professionals as well as by end users.
According to the invention, this configuration can consequently also be used for so-called split beds that are divided in the middle particularly for the transport in confined staircases. In these split beds, the seating part is divided in the middle in the longitudinal axis of the bed frame and both bed parts are fitted into one another during the final assembly. In these split beds, the head base frame part and the foot base frame part each comprises the single components together with the functional fitting according to the invention.
Due to the adjustment of the longitudinal beam, the proposed functional fitting can be adapted to various bed lengths and widths and can be used actually completely independently from the bed length for bed lengths of 1.90 m to 2.10 m and more.
For attaching the longitudinal beam to the seating plate, embodiments can comprise a cross beam that extends transversely to the longitudinal axis of the longitudinal beam in order to avoid a possible sagging of the seating plate, in particular in case of heavy people. In the usual configurations, this cross beam corresponds to approximately one fifth of the width of the bed frame but can also extend up to 80% of this width, depending on the design.
Preferred embodiments include that the foot plate is divided into an upper leg plate and a lower leg plate that are pivotably connected to each other about a further pivot axis. In order to realize a relative movement of the upper leg plate and of the lower leg plate relative to each other during the adjustment, the lift-up frame for the foot part is preferably screwed to the lower leg plate by means of bracket profiles. By contrast, for the lift-up frame for the foot plate, it is sufficient that the here envisaged lift-up frame rolls off the head plate with wheels on the underside and thus is not screwed therewith.
The attaching of the fitting to the bed frame is usually carried out directly, particularly and preferably by screwing. For adapting to various bed frame dimensions and heights, a part can also be directly attached to the joining part, for example by using spacer blocks that are placed between the functional fitting and the joining part.
Furthermore, for adapting the functional fitting to various bed frames, thus to bed frames with different lengths and widths, the functional fitting can have an “adaptive” design. This means that the longitudinal beam with the linear drive attached thereon and the lift-up frame remains the same as basic unit so that the leverage ratios and the arrangement of the hinges with respect to one another always remain the same but the end portions, thus the outer front ends, are adaptively thus variably designed and can thus be adapted to the length and width of each bed.
This adaptive configuration can be provided at the outer front end that is thus facing the head frame part or the foot frame part in the mounting position as well as at the inner front end that is facing the central plate in the mounting position, or can be carried out at both front ends.
This adaptive adjustment is carried out by front-end adapters that can be connected, for lengthening a respective beam, thus the longitudinal beam that extends in the longitudinal axis of the bed or a cross beam that extends transversely to the longitudinal axis, to the respective front ends of the beam, for lengthening or shortening the beam and thus for the adjustment thereof to various frame lengths and frame widths.
Each front-end adapter comprises a proximal longitudinal beam attachment portion for attaching to the beam, thus to the longitudinal beam or the cross beam, as well as a distal frame attachment portion for attaching to a frame side part.
The front-end adapters are preferably configured for the variable adjustment to various frame lengths and/or frame widths. This preferably takes place by providing an insertion profile that is designed corresponding to an internal geometry of a beam and insofar that can be inserted or pushed into the respective beam.
Moreover, a detent is preferably provided to fix the front-end adapter in the respective beam in a desired nominal position to realize a specified length.
The frame attachment portion can again have different designs. It can, for example, comprise a mounting bracket that acts as a supporting bracket and that is fundamentally designed as an inner bracket, thus as a support leg bearing on an inner edge of the bed and a contact leg resting against an inner surface. Both legs, thus the support leg and the contact leg, preferably include a 90° angle between them, wherein it is however of course adapted to the corresponding edge of the bed, consequently other brackets between the legs are fundamentally also conceivable. In any case, this mounting bracket can be set and placed against an inner edge of the bed, preferably on an inner edge of a cross beam, of a longitudinal beam but also directly on an inner edge of the frame side parts, thus on the head frame side part or on the foot frame side part, or of the frame side parts. In another embodiment, the frame attachment portion is configured as a mounting flange, thus as a flat element that is connected to the longitudinal beam attachment portion and that can be screwed on the inside to the inner side of the frame side parts or to the head frame part or to the foot frame part.
The longitudinal beam attachment portion can also have different designs and is preferably configured so as to be connected to the longitudinal beam in different predefined positions. In the preferred embodiment, this portion comprises an insertion part or an insertion body that can be inserted into the longitudinal beam, that is adjustable relative thereto and that can be positioned in different positions as well.
Particularly and preferably, the front-end adapters that are placed at the respective front end of the longitudinal beam are or can be adjustably attached to the longitudinal beam. This is preferably carried out by a corresponding push-in region or insertion portion that can be pushed or inserted into the longitudinal beam that is preferably configured as a hollow profile. Consequently, a front-end adapter is formed that includes, at the outer distal end, the mounting bracket or a mounting profile or a mounting flange and that comprises the insertion portion transversely extending to this mounting bracket, thus extending in longitudinal direction to the longitudinal beam, this portion being insertable into the longitudinal beam, preferably with a corresponding clearance fit, and being movable relative thereto.
But it is also within the scope of the invention to firmly fix the mounting brackets or the mounting flange of a non-adaptive embodiment at the distal front ends of the longitudinal beam, in particular to weld them, when they are configured as steel profiles, which constitutes the preferred embodiment.
This being, an outer mounting bracket is preferably provided at the outer front end that is facing the foot frame side part or the head frame side part in the mounting position, and a cross strut can be configured at the inner front end, that is thus facing the central part in the mounting position, that thus extends with the longitudinal beam preferably at the lower end of the frame side parts, thus of the frame, and that can also be screwed on the inside directly to the frame side parts besides the attachment to the central plate on the upper side, for example with corresponding mounting flanges to be screwed on the inner side of the frame side parts.
In an adaptive embodiment, this cross strut that thus extends in the mounting position transversely to the longitudinal axis of the longitudinal beam and that thus extends in the transverse direction of the bed, parallel to the head frame side part and to the foot frame part, can be configured adjustable to various bed widths. In the preferred embodiment, this is carried out again with front-end adapters that can be telescopically inserted or pushed into this cross strut for attaching to the inner sides of the frame side parts.
The adaptive design at the outer front end of the longitudinal beam, thus in longitudinal direction of the bed, can also be carried out by front-end adapters that can now be telescopically connected to the longitudinal beam, that thus comprises a proximal insertion portion configured for being pushed into the inner hollow space of the longitudinal beam and a flange or a mounting flange provided at an outer end transversely to this insertion portion and transversely extending to the insertion portion for being attached to the head frame side part or to the foot frame side part. With this design, a cross beam or a retaining block or a fastening block that is arranged between the frame side parts on the inside horizontally extending on the head frame side part or on the foot frame side part can consequently be dispensed with.
But even when using such cross beams on the frame, the adaptive configuration or the adaptive adjustment of the longitudinal beam can be suitable. In another embodiment, an outer front-end adapter is for example provided that also includes a proximal insertion portion that can be inserted into the longitudinal beam, that thus preferably has a design complementary to the internal geometry of the longitudinal beam, preferably with a rectangular or a square cross-section, and a bracket profile is provided at its distal outer end, this profile resting on the cross beam on the inside with a vertical leg and bearing on the cross beam on the upper side with a horizontal leg that extends transversely to this vertical leg.
In an alternative design, this embodiment can also be used for the direct, thus quick attachment to the inner surface of the head frame side part or to the foot frame side part, thus without a cross beam or a crossbar on the inside.
Generally, the front-end adapters that can be connected to each front end of the longitudinal beam preferably act with an insertion profile adapted to the cross-section of the longitudinal beam, insertion profile or insertion end that is thus configured complementary to the internal geometry of the longitudinal beam, and the respective mounting bracket or mounting flange is provided at the distal outer front end of the insertion profile. The front-end adapters are preferably configured as steel profiles, in particular as welded steel profiles, thus as welded parts.
For the precise length adjustment to various but standardized bed lengths of usually 2 meters, 2.10 meters or 2.20 meters, a detent can be provided between the receiving longitudinal beam and the inserted insertion portion of the front-end adapter. This detent preferably comprises a through hole arranged and transversely extending in the longitudinal beam into which a splint or a pin can be inserted and that then engages in mounting position in cross holes of different configurations in the insertion portion of the front-end adapter in order to lock it relative to the longitudinal beam in the length respectively adapted to each bed length.
The front-end adapter can either grasp the mounting bracket at the distal end, as described above, that thus comprises at the distal front end a bracket profile with a vertical leg that extends vertically in mounting position for resting on the inside against the cross beam or the crossbar, as well as a horizontal leg transversely extending to the plane of the vertical leg that can be set or that bears on the upper side of the cross beam.
In an alternative embodiment for beds without a cross beam or a crossbar inside the head frame part or the foot frame part, the front-end adapter can also simply include a plate-shaped flange that extends at the front end transversely to the insertion part, that preferably extends transversely at the outer front end and is welded to the insertion part and that, in mounting position, is attached, preferably screwed, to the lower inner side of the head frame side part or of the foot frame side part.
For a bed frame without a cross beam or a crossbar, the front-end adapter can also be configured in such a manner that the mounting bracket can be attached to the inner side of the vertically extending head frame side part or foot frame side part, for which the mounting bracket again comprises a vertical leg, in abutment on the inside against the inner surface of the frame side part, at the upper end thereof a horizontal leg is configured transversely to the plane of the vertical leg that can also be set or that bears on the upper edge of the head frame side part or of the foot frame side part.
For the rotatable attachment (hinging) of the linear drive and/or of the lift-up frame on the longitudinal beam, a preferably U-shaped attachment bracket can be provided laterally, the attachment bracket in the outer leg of which an opening is formed to which the linear drive, in particular a rear fork head, is rotatably attached with a bolt. This attachment bracket that preferably comprises an inner leg connected in a mounting position on the inside to the longitudinal beam, the inner leg to which plane a transverse leg extends transversely that then merges into an outer leg, that preferably extends parallel to the inner leg, in which the hole for forming the opening is configured. This attachment bracket is preferably connected with its inner leg on the outer side to the longitudinal beam, is preferably welded thereto.
The attachment bracket is preferably laterally attached to the inner leg on the longitudinal beam, this being optimized at predefined locations for the respective bed length of, in particular, 2 m, 2.10 m or 2.20 m, wherein the attachment to the shortest bed of 2 m is preferably carried out directly on the front side with the transverse leg extending parallel to the front end of the longitudinal beam with the inner leg. For the design for a bed length of 2.10 m, this attachment bracket is however attached along the longitudinal axis of the longitudinal beam offset to the middle of the bed with the inner leg on the outer side of the longitudinal beam, thus offset by approximately 10 cm, which means that there is a distance of approximately 10 cm between the front end of the longitudinal beam and the transverse leg of the attachment bracket. The same applies to the embodiment for a bed length of 2.20 m for which the distance from the front end of the longitudinal beam and the transverse strut of the attachment bracket is thus then approximately 20 cm.
According to the invention, this attachment bracket with the opening can be used for the rotatable attachment of the lower ends of the lift-up frame or of the linear drive, even for an embodiment with a non-adaptive design, thus that does not comprise a front-end adapter adjustable relative to the longitudinal beam, thus for embodiments in which a mounting flange is provided transversely extending at the front end of the longitudinal beam for attachment to the inner side of the respective frame side part or of a mounting bracket for attaching to a cross beam or to the frame side part.
This attachment bracket with the opening or the fastening eye can be provided laterally on the longitudinal beam for all the embodiments of the functional fitting for the rotatable attachment either of the linear drive or of the lift-up frame, preferably by welding. In all cases, the attachment bracket consists of an inner leg that can be attached or that is attached laterally with the longitudinal beam, of an outwards extending transverse leg transversely to the plane of the inner leg as well of an outer leg again transversely extending to the plane of the transverse leg and preferably parallel to the inner leg, outer leg in which the opening or the through hole is provided.
When considering the invention within the overall context, those skilled in the art will appreciate that a particularly low attachment of the functional fitting relative to the frame side parts is suitable for the desired space optimization and stability so that the front-end adapters are thus preferably configured in such a manner that they make possible the attachment of the front-end adapter or of the longitudinal beam as far as possible at the lower end of the respective side part so that the longitudinal beam, the front-end adapter or the cross beam flush with their lower ends and with the lower edge of the side parts. In this way, the functional fitting can also be used with a bed with a substructure or with a bed or a frame that is set on a floor or under which, for example, drawers are arranged. It is important that the functional fitting does not protrude over the lower edge of the bed frame.
Furthermore, the invention comprises however also a box spring bed that comprises a bed frame with two frame side parts extending in a bed longitudinal axis as well as with a head frame part and a foot frame part transversely extending in a width of the bed at a head end and at a foot end, with a central plate extending in a lying plane between the side parts, with a head plate connected to the central plate, pivotable at a head end of the central plate about a head plate pivot axis transversely extending to the bed longitudinal axis as well as a foot plate connected to the central plate, pivotable at a foot end of the central plate about a foot plate longitudinal axis transversely extending to the bed longitudinal axis. According to the invention, this box spring bed has a functional fitting described above.
Further features and advantages of this invention shall be become apparent from the following description of the figures of preferred embodiments with reference to the appended drawings. Direction terminology such as “up”, “down”, “at the front”, “at the back”, “front”, “rear”, etc. are used with reference to the orientation in the described figures. Since components of embodiments can be positioned in a variety of different orientations, the direction terminology serves for illustration and is in no way restrictive. It should be understood that other embodiments can be used, and structural or logical changes can be made without departing from the scope of protection of the invention.
The following detailed description should not be considered in a restrictive sense.
Within the scope of this description, the terms “connected”, “attached” as well as “integrated” are used for describing a direct as well as an indirect connection, a direct or an indirect attachment as well as a direct or indirect integration.
In the figures, identical or similar elements are provided with identical reference numerals, as far as this is appropriate. The representations in the figures are substantially to scale. However, for illustrating details, certain areas are represented exaggeratedly enlarged, this being recognizable for the skilled in the art. Moreover, the drawings can be strikingly simplified and do not necessarily include any possibly present detail of the practical embodiment.
Unless otherwise specified, the indefinite article and the definite article refer not only to a single component but are to be understood as “at least one”. The terminology includes the above-mentioned words, variations thereof as well as similar meanings. Furthermore, the skilled in the art shall understand that the terms “approximately”, “substantially” and “similar” terms, in connection with the dimensions or a property of a component of the invention, do not describe the described dimensions and properties as a strict limit and/or parameter and slight variations thereof that are functionally similar should not be excluded. At least, description parts with numerical parameters also comprise variations of these parameters according to the mathematical and production-technical principles of the prior art, for example roundings, deviations and other systematic errors, manufacturing tolerances, etc.
Finally, for the sake of clarity, in case of several same components or elements, only one is respectively provided with a reference numeral.
All the features of the following embodiments are disclosed independently from each other also in general terms within the scope of the invention.
According to the figures, two functional fittings 2, 4 coaxially arranged along the central longitudinal axis of a bed frame 6 are usually mounted below and inside the bed frame 6 for a box spring bed.
The box spring bed, more precisely its bed frame 6, comprises two frame side parts 6.1, 6.2 equally spaced to one another in a transverse direction parallel to a longitudinal axis extending centrally between them as well as a head frame part 6.3 and a foot frame part 6.4 at a head end and at a foot end transversely extending between these frame side parts 6.1, 6.2 and connecting them so that a circumferentially closed rectangular bed frame 6 is formed.
A central plate 8, transversely extending between these frame side parts 6.1, 6.2 is attached on the upper side of this bed frame 6 approximately in the middle. This central plate 8 defines the lying plane of the bed that preferably extends horizontally in a mounting position. A head plate 12 is pivotally attached at a head end to this central plate and a foot plate 14 at a foot end by hinges 10. For a better representation, the central plate 8, the head plate 12 and the foot plate are designed as transparent plexiglass plates but in practice they are rather designed as wood plates.
The foot plate 14 is again divided into an upper leg plate 14.1 that faces the central plate 8 as well as into a slightly longer lower leg plate 14.2 that is facing away from the central plate. The upper leg plate 14.1 and the lower leg plate 14.2 are again pivotally connected with one another by hinges 10.
Each functional fitting 2, 4 comprises a longitudinal beam 2.1, 4.1 configured as a rectangular steel profile that is made of lacquered steel and that centrally extends under the bed frame 6 in the bed longitudinal axis. Mounting brackets 2.2, 4.2 are attached at its respectively outer front end; they are set on the upper side of cross beams 6.5, 6.6 transversely attached between the side parts 6.1, 6.2 and attached on the inner side on the head frame part 6.3 and on the foot frame part 6.4, respectively with horizontal legs bearing on the upper side on the cross beams 6.5, 6.6 and vertical legs in abutment against them on the inner side.
Bracket profiles 2.3, 4.3 extending on both sides respectively transversely to the longitudinal axis of the longitudinal beam are attached at the inner front end of the longitudinal beams 2.1, 4.1, bracket profiles the inner legs of which are laterally attached to the longitudinal beams 2.1, 4.1 and the horizontal mounting legs of which extend transversely to the longitudinal axis of the longitudinal beams 2.1, 4.1 and can be screwed to the lower side of the central plate in mounting position in order to thus connect the functional fittings 2, 4 on the one hand with the bed frame 6 on the inner side and simultaneously to secure the central plate 8 against sagging in the middle, whereto the bracket profiles 2.3, 4.3 are preferably configured as steel profiles. For stability reasons, the whole functional fitting 2, 4 is made from angled or drawn steel profiles.
The rear motor end of a linear drive 2.4, 4.4 is rotatably hinged at the outer end of the functional fittings 2, 4 respectively as close to the outer and as close to the lower end of the longitudinal beams 2.1, 4.1 as possible. The inner end of each linear drive 2.4, 4.4 is formed by a motorized adjustable lifting tube rotatably hinged on a transverse beam of a lift-up frame 2.5, 4.5.
Each lift-up frame 2.5, 4.5 is rotatably attached with a lower end to the longitudinal beam 2.1, 4.1 and widens at its upper end in transverse direction for increasing the contact surface below the head plate 12 and the foot plate 14 or the lower leg plate 14.2.
Each lift-up frame 2.5, 4.5 can be formed by two profile brackets connected with each other that have a lower attachment end for the lateral hinging to the respective longitudinal beam 2.1, 4.1, thus enclose it on both sides with an axis arranged therebetween and extend in longitudinal direction from this lower attachment end parallel to one another on both sides of the longitudinal beam 2.1, 4.1, first merge in longitudinal direction into an enlarged portion in which the space to the profile brackets widens and merge at their free upper end again into end portions that extend parallel to one another.
The lift-up frame 2.5 is provided with rollers at the free upper end on the end portions spaced from each other in transverse direction, rollers that roll on the lower side of the head plate 12 when displacing the lift-up frame 2.5 from the lowered rest position to the raised lift position. The lifting tube of the linear drive 2.4 engages a cross beam that extends between the widened portions of both profiles of the lift-up frame 2.5.
The lift-up frame 4.5 at the foot part is structured similarly to the lift-up frame for the head part with the difference that, instead of rollers, it includes two bracket profiles at the end portions that are screwed on the lower side of the lower leg plate 14.2. Again, the lifting tube of the linear drive 4.4 engages on a fork head that is attached to a cross beam that extends between the widened portions of both profiles of the lift-up frame 4.5.
According to the invention, the functional fittings 2, 4 can also be suitably designed in that the linear drive is attached with its lower motor end in the mounting position, is thus integrated into the bed frame 6, as far as possible on the outside on the longitudinal beam 2.1, 4.1, is thus hinged and rotatably engages the relatively movable lifting tube as close as possible at the upper end on the lift-up frame 2.5, 4.5 that is hinged with its lower attachment end by being rotatably oriented inwards on the longitudinal beam 2.1, 4.1 in order thus realize an optimal development of force and to have to provide a lowest possible motor power.
In
This functional fitting differs from the embodiment represented in
The front-end adapters 2.10 and 2.11 according to the embodiments in
The following figures now show enlarged isometric front views of the respectively outer front region of different embodiments of functional fittings with attachment brackets 2.12 that are respectively laterally welded on the longitudinal beam 2.1 in different positions, spaced from the front end of the longitudinal beam 2.1.
The attachment bracket 2.12 is configured as a steel profile with a U-shaped cross-section that has an inner leg 2.12.1 attached, in particular welded to the longitudinal beam 2.1, and insofar in abutment against it on the outside, the inner leg from which a transverse leg 2.12.2 extends by including an angle of 90 degrees out of the plane of the inner leg 2.12.1. An outer leg 2.12.3 is provided at the outer end of the transverse leg 2.12.2, the outer leg that again forms an angle of 90 degrees with the plane of the transverse leg 2.12.2 and additionally extends parallel to the inner leg. A hole 2.12.4 is formed in this outer leg 2.12.3.
In the embodiment according to
The isometric front view according to
This embodiment has also an adaptive design which for the insertion profile 2.13.1 can be attached in different positions in the receiving longitudinal beam 2.1 by means of an insertion sleeve 24 and a locking pin 26 that can be inserted into an insertion hole 2.14 in the longitudinal beam 2.1 and then penetrate through corresponding positioning holes 2.15 in the insertion profile of the front-end adapter 2.13 and thus fix the front-end adapter in different but defined nominal positions adapted to standardized bed sizes. An attachment sleeve 16 that can be secured by a locking pin 18 and that fixes the front-end adapter 2.13 in the longitudinal beam 2.1 in different nominal positions can be inserted into this insertion hole 2.14.
The embodiment of
In the embodiment according to
The functional fittings 2 have longitudinal beams 2.1 of different lengths for beds of different lengths, wherein the respective attachment bracket 2.12 is thus arranged, relatively speaking, always at the same location with respect to the corresponding attachment bracket for the lift-up frame on the not represented opposite end and the lengths of the longitudinal beam 2.1 are insofar configured longer.
In the embodiment according to
By contrast,
| Number | Date | Country | Kind |
|---|---|---|---|
| 20 2020 107 053.3 | Dec 2020 | DE | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2021/084853 | 12/8/2021 | WO |
