Motorized functional fitting for a base of a box spring bed or of a platform bed, or for a slatted bed base

Abstract

The invention relates to a motorized functional fitting for a base of a box spring bed or of a platform bed, or for a slatted bed base, having the features of the preamble of claim 1. The invention also relates to a head- and back-supporting unit for a box spring bed or for a platform bed, and to a box spring bed, a platform bed or a slatted bed base.

Description

[0001] Motorized functional fitting for a bed frame of a box spring bed or a platform bed or for a framed slatted frame. The invention relates to a motorized functional fitting for a bed frame of a box spring bed or a platform bed or for a framed slatted frame with the features of the preamble of claim 1. The invention further relates to a head and back support unit for a box spring bed or for a platform bed as well as a box spring bed, a platform bed or a framed slatted frame.

[0002] A box spring bed comprises a bed frame with two frame side parts extending along a longitudinal axis of the bed, as well as head and foot frame parts extending transversely between these at a head and foot end, and a center plate extending in a lying plane between or above the side parts. At a head end of the center plate facing the head end of the bed frame, a head plate is pivotally mounted about a head plate pivot axis extending transversely to the longitudinal axis of the bed. Furthermore, a foot plate is pivotally mounted about a foot plate pivot axis also extending transversely to the longitudinal axis of the bed. The plate-shaped center plate, which

[0003] The headboard and footboard together form a lying surface for a mattress. Platform beds are beds that contain several platforms whose angles are adjustable to one another and are designed to support at least one mattress element. The mattress support can be formed by one or more slatted frames. In box-spring beds, the platforms for supporting the mattress can each be designed as a plate.

[0004] A platform bed can comprise a bed frame with a bed frame that has two frame side parts extending along a longitudinal axis of the bed, as well as head and foot frame parts extending transversely between them. On a side facing the head end of the bed frame, a back support platform is provided that is pivotable about a pivot axis extending transversely to the longitudinal axis of the bed. Furthermore, a leg support platform is often provided that is pivotable about a pivot axis that also extends transversely to the longitudinal axis of the bed. The pivoting platforms together form a lying surface for a mattress. If necessary, they can be supplemented by a central platform arranged between them, which cannot pivot.

[0005] A framed slatted frame is basically constructed like the previously described bed frame, but is a stand-alone unit with several adjustable platforms, which can be placed on any bed frame with its rectangular frame, without the need for installations such as motor drives, etc. on the bed frame.

[0006] The frame of the bed frame or slatted base is formed from two frame side parts extending parallel to each other along the longitudinal axis of the bed. These side parts are connected at the head and foot ends via a head frame part and a foot frame part to form a usually rectangular, closed frame that is placed on a frame, feet, or the like, which separates the frame from the floor. The mattress can be placed on the lying surface formed jointly by the movable and stationary platforms.

[0007] A functional fitting is connected, in particular screwed, to the bed frame or slatted frame in order to be able to raise and lower the head platform and the foot platform using a motor.

[0008] The functional fitting comprises at least one longitudinal beam extending along a longitudinal axis of the beam, which is designed to be connected to the box spring bed, the bed frame or the slatted frame.

[0009] A support frame is pivotally connected to the longitudinal beam at a pivot point. Finally, a linear drive extending and acting between the longitudinal beam and the support frame is provided, which converts the rotational movement of an electric motor into the translational movement of a lifting tube. The lifting tube is pivotally connected to the support frame in such a way that the support frame can be continuously moved from a rest position, lowered to a lying level, to an upright position.

[0010] State of the art

[0011] The functional fitting is usually attached to the bed frame of the box spring bed and is used to move the headboard and footboard from the lowered resting position, in which they extend in a plane with the horizontal lying surface, into an upright position raised from this lying surface.

[0012] The bed frame of a box spring bed is formed from two frame side panels that extend parallel to each other along the bed's longitudinal axis. These side panels are connected at the head and foot ends via a head frame and a foot frame to form a typically rectangular, closed frame that is either placed directly on the floor or placed on drawers or a frame, feet, or the like, which space the frame from the floor. The box spring mattress can be placed on the lying surface formed by the center panel, the head plate, and the foot plate.

[0013] The functional fitting is connected to the bed frame, in particular screwed, in order to move the headboard and footboard motorically.

[0014] The longitudinal member extends from the head frame section to the foot frame section, i.e., it is attached to the bed frame at the top and bottom ends. The longitudinal member furthermore accommodates a centrally mounted double drive, whose electromotor-operated linear elements actuate a support frame for pivoting the head section and a support frame for pivoting the foot section. In the prior art, the linear drives are designed as double drives, which are centrally located on the longitudinal member. The double drives are attached to the longitudinal member at a rear end and engage, i.e., are articulated, with a respective linear element on the head plate support frame and the foot plate support frame by means of a linear element which is longitudinally adjustable relative to a stationary outer tube.In the current state of the art, the longitudinal beam essentially extends along the entire longitudinal axis of the bed, i.e., it is as long as the length of the bed frame and absorbs the essential forces from the upright frames and the linear drives.

[0015] Consequently, the longitudinal member must be designed to be sufficiently stable in order to absorb these forces, which is preferably achieved by designing the longitudinal member as a rectangular or square profile, which has a particularly good equatorial area moment of inertia against bending stress.

[0016] A functional fitting for a box spring bed is known, for example, from DE 102016 116 256 A1. The longitudinal beam disclosed in this document is designed as a continuous profile rail extending from the head end to the foot end of the bed frame. The raising frames, sometimes also referred to as raising levers, are rotatably hinged at their rear end to the longitudinal beam and, via the central double drive, can be pivoted relative to the longitudinal beam from the lowered, horizontally extending rest position to the raised lifting position, which forms an angle with the longitudinal axis of the longitudinal beam. The lifting position can usually be adjusted within a range between 0° and approximately 45° with the longitudinal axis of the beam.

[0017] These functional fittings have the disadvantage that the length of the bed determines the length of the longitudinal beam and its profile rail. This requires different profile rails or different functional fittings with different longitudinal beams for each bed length and each bed variant. This results in a considerable number of variants, as there are currently no standards for box spring beds. This significantly increases storage costs.

[0018] Transporting the functional fittings is also problematic because they are typically significantly longer than standard pallet dimensions, which are usually 800 x 120 cm. Therefore, special dimensions must always be provided for in storage rooms, which is costly.

[0019] Another functional fitting is known, for example, from DE 20 2020 107 053 U1. It comprises at least one longitudinal beam extending along a longitudinal axis of the beam, which is designed to be connected to the bed frame. A standing frame is pivotally connected to the longitudinal beam at a pivot point. Finally, a linear drive is provided which extends and acts between the longitudinal beam and the standing frame and converts a rotational movement of an electric motor into a translational movement of a lifting tube. The lifting tube is rotatably connected to the standing frame in such a way that the standing frame can be continuously transferred from a rest position lowered into a lying level into an upright position. The disadvantage of using a bed equipped with such a functional fitting is that in the upright position of the back support during sedentary activities such as, for example,When reading a book, a neck roll or similar support is still necessary to support the head, which must be tilted further forward than the back during these activities. The familiar functional fitting does not have a headrest that can be adjusted separately from the backrest.

[0020] Task

[0021] Therefore, the invention is based on the task / technical problem of at least partially avoiding the disadvantages that occur with generic functional fittings and, in particular, of providing a particularly variable, easy-to-transport, but at the same time very stable motorized functional fitting.

[0022] In particular, the invention is based on the object of providing a motorized functional fitting which enables an ergonomic head position in the upright position of the back support and which is suitable for all possible box spring beds, platform beds or for framed slatted frames, in particular also for those which are provided with several slatted frame elements as a mattress support.

[0023] invention

[0024] This problem is already solved by a motorized functional fitting with the features of claim 1. Preferred, but not mandatory, features are set out in the subordinate dependent claims.

[0025] A basic idea of ​​the invention is based on a longitudinal member for each adjustable unit at the head or foot end, whereby the longitudinal member can be mounted in the middle of the bed frame. In order to still achieve broad support for the head, back, leg and foot supports, a symmetrical, V- or Y-shaped upright frame is provided, which is hinged to the longitudinal member at its narrow side and splits outwards on both sides into two upper arms that are spread outwards. The connection or contact to the head, back, leg and foot supports is made via the upper arms. Due to the functional fitting, which is mirror-symmetrical and designed to emanate from the central axis of the bed frame, it is not necessary to create connections between the functional fitting and the side frame parts, or even to connect them directly to them. This means that the same functional fitting can be used with bed frames of different widths.

[0026] The particular advantage of the invention also lies in the fact that, despite the arrangement of the functional fitting and drive concentrated in the center of the bed frame, it is intended to provide a headrest and a backrest that can be raised in a defined sequence of movements using only one drive mechanism. At the end of the uprighting movement, it is desired that the headrest be inclined more towards the lying surface than the backrest.

[0027] For this purpose, two headrest bearing elements are provided for the headrest or the headrest platform, each of which is connected to the two upper arms of the upright frame via a link lever.

[0028] With regard to the control of the back support of the functional fitting for a box spring bed, the invention provides two advantageous embodiments.

[0029] According to a first embodiment, which is available for a box spring bed as well as a platform bed or a slatted frame, a synchronous uprighting movement is achieved in which, at the beginning of the uprighting movement after the drive is switched on, not only the backrest but also the headrest is raised. The further the uprighting angle of the backrest increases, the more the uprighting angle of the headrest also increases disproportionately. To achieve this movement, an additional control lever is pivoted on each of the upper arms of the uprighting frame, which is connected to a backrest bearing element intended for attachment to the backrest. The additional control levers are attached to the uprighting frame with their coupling joints approximately midway between the control levers for the headrest at the end of the upper arms and the cross member.

[0030] According to a second embodiment, which is particularly suitable for a box spring bed, a leading headrest movement is achieved in which initially only the headrest is raised until the desired relative angular position between the headrest and backrest has been established, before the backrest also raises, maintaining the relative angular position. Here - as in the first embodiment - the end control levers serve to raise the headrest. However, there is no forced coupling with the backrest. To raise the headrest, one or more rollers are provided on the raising frame, the diameter and position of which are selected such that they only contact the back of the backrest after the desired relative angular position between the headrest and backrest has been established. The raising frame then pushes the backrest up via the rollers, maintaining the angle of the headrest to the backrest.The longitudinal member of the functional fitting preferably comprises an outer end, in the installed position, which is designed for attachment to the head frame part or the foot frame part. Furthermore, the longitudinal member preferably comprises an inner end, opposite the outer end and built into the bed frame in the installed position, which is designed for attachment to a center plate or a center platform. Furthermore, the drive can be arranged laterally next to the longitudinal member, i.e. fastened to it, and the erection frame can be rotatably articulated to the longitudinal member at a fastening end which is lower in the installed position. This means that the erection frame can be rotatably articulated to the longitudinal member at its outermost end in order to achieve the largest possible lever arm.Finally, the relatively movable lifting tube of the linear drive can pivotally engage the erection frame at a pivoting end spaced from this mounting end along the erection frame's longitudinal axis. This design enables particularly efficient force delivery from the lifting tube to the erection frame with a particularly long lever arm, allowing the use of linear drives with approximately one-third less power than existing functional fittings of this type.

[0031] According to the invention, the longitudinal member can be designed in such a way that the end which is outer in the installed position and directed towards the bed frame can be fastened either directly or indirectly to the bed frame at the head or foot end and can be designed at an opposite end for fastening to the middle part or the middle platform.

[0032] The linear motor, which is preferably rotatably articulated with its lower motor end at the outer front end in the installed position, and the erection frame, which is rotatably oriented with its lower fastening end towards the inner front end, preferably form an approximately isosceles triangle together with the longitudinal member in the lifting position, although this is not essential for the operation of the invention.

[0033] Preferably, the pivotable linkage is effected via fork heads, which are arranged in particular on the linear motor at the rear end of the motor and the front lifting tube, or via profiles which rotatably engage an axis arranged in the longitudinal member.

[0034] According to the invention, the functional fitting can be constructed in such a way that the lower motor end of the linear drive is aligned in the installed position to the outer end of the longitudinal member and the lower fastening end of the erection frame is rotatably articulated to the inner end of the functional fitting.

[0035] The lifting tube of the linear drive, which is preferably accommodated in the housing of the linear drive in a relatively movable manner, can be pivotally connected as far as possible to the upper end of the erection frame, so that a particularly efficient power development of the toggle lever thus formed is realized, but at the same time the functional fitting is very flat in the lowered rest position.

[0036] In the case of a bed with a separately relatively movable head and back support or head and back support platform or leg and foot support, a split longitudinal member is provided which is screwed to the bed frame with its end facing the head end or foot end of the bed frame in the installed position and is fastened to this center plate or center platform with its end facing the center plate or center platform.

[0037] This attachment to the center plate or center platform is preferably achieved by angle profiles attached to the side of the longitudinal member. These are attached to the side of the longitudinal member with a vertical leg extending in the installed position and are screwed to the underside of the center plate or center platform with a horizontal leg extending at right angles to this vertical leg. These angle profiles, preferably made of sheet steel, simultaneously stabilize the center plate or center platform to prevent sagging when a person sits down.

[0038] Particularly harmonious power development and thus particularly low power consumption of the linear drive's electric motor is required when the rear end of the linear drive's motor engages the outer end of the longitudinal member and the mounting end of the erection frame engages the inner end of the longitudinal member, particularly when the motor is pivotally connected. The greatest power of the electric motor is required for raising the erection frame from its lowered rest position, because the vertical force required for lifting is lowest in this case. Once these first 10 to 15 percent of the adjustment range have been overcome, the electric motor is subjected to only minimal load.

[0039] To ensure the lowest possible power supply of the linear drive, it is advantageous if the end of the linear drive with the housing and the electric motor is pivotally mounted as low as possible on the longitudinal member. An additional support block can therefore be provided on the inside of a head and foot end section that extends vertically in the installed position, to which the rear end of the linear drive is or can be attached. This support block is sometimes also referred to as a mounting beam, mounting block, cross member, or crosspiece. It is arranged transversely to the longitudinal axis of the bed, preferably on the inside of the head or foot frame section at its lower ends, terminating with the lower edge of the frame side section between the frame side sections, and forms a support edge offset inward from the bed frame, to which the front ends of the functional fitting can be attached.

[0040] Preferably, an angle profile is rotatably attached to the rear end via a rear fork head, which can be placed on this fastening beam or fastening block and screwed to it.

[0041] Preferably, such fastening beams or fastening blocks are provided on both the head side part and the foot side part in order to achieve the lowest possible force application point of the rear fastening end of the linear drive, in particular the rear fork head. Further optimization of the force distribution is achieved by ensuring that the front end of the linear drive, in particular the front end of the relatively movable lifting tube, acts as high as possible on the erection frame, i.e., at a point that is as far as possible from the lower fastening end of the erection frame on the longitudinal member. This design of the functional fitting achieves the highest possible pitch of the linear drive even in the lowered rest position, so that less power is required from the electric motor of the linear drive compared to the prior art.

[0042] In the particularly preferred embodiment, the front end of the linear drive, in particular the relatively movable lifting tube, engages a crossbeam extending between two fork-like, widening profile sections or profile supports of the upright frame. This allows for a particularly low positioning of the pivot point of the rear end of the linear motor and thus a relatively flat construction of the bed or bed frame of approximately 7-11 mm, which allows for the placement of drawers or substructures under the actual bed frame without noticeably increasing the overall system's height.

[0043] An advantageous embodiment of the invention, which claims protection in itself, comprises an independent head and back support unit for a bed frame of a box spring bed or for a bed frame of a platform bed.

[0044] According to the invention, the longitudinal beam with the linear drive and the upright rod constitutes a separate functional assembly that can be attached to a bed frame or an assembled bed frame with a seat plate. This makes the functional fitting according to the invention significantly easier to transport, package, and handle for professionals and end users compared to the prior art.

[0045] In addition, the invention also encompasses a piece of furniture in the form of a box spring bed, comprising at least a bed frame with two frame side parts extending along a longitudinal axis of the bed, as well as a head frame part and a foot frame part extending transversely across the width of the bed at a head and foot end, a center plate extending in a lying plane between the side parts, a backrest pivotably connected thereto, and a headrest pivotably connected to the backrest. According to the invention, this box spring bed has one of the two previously described head and backrest units, by means of which a controlled movement of the headrest and backrest is achieved when adjusted by a single linear motor.

[0046] Preferred embodiments include the bed frame also comprising a leg and footrest unit, which is divided into a thigh support and a foot and lower leg support, which are pivotally connected to each other about a further pivot axis. To realize a relative movement of the thigh support and the foot and lower leg support during adjustment, the upright frame for the foot and legrest unit is preferably screwed to the foot and lower leg support using angle profiles.

[0047] For both a box spring bed and a platform bed, it can be provided that the headrest or the headrest platform is inclined more towards the lying surface than the backrest at the end of the upright movement, two headrest bearing elements are to be provided in the functional fitting for the headrest or the headrest platform, each of which is connected to the arms of the upright frame via a control lever.

[0048] With regard to the control of the backrest or backrest platform and the headrest or headrest platform, the functional fitting of the invention provides for a synchronous uprighting movement of both supports through a common drive. When the uprighting movement begins after the drive is switched on, not only the backrest or backrest platform is uprighted, but also the headrest or headrest platform. The further the uprighting angle of the backrest or backrest platform increases, the more the uprighting angle of the headrest or headrest platform increases disproportionately.

[0049] Two basic functional principles can be implemented alternatively:

[0050] In a first embodiment, both the backrest or backrest platform and the headrest or headrest platform are each articulated via a pair of control levers, which are connected to the arms of the shared upright frame. By positioning the coupling joints of the control levers on the arms and coordinating the lengths of the two pairs of control levers, the desired movement can be controlled with particular precision. The backrest or backrest platform and the headrest or headrest platform are each supported directly on the upright frame.

[0051] In a second embodiment, only the headrest or headrest platform is articulated from the upright frame via a pair of link levers. The backrest or backrest platform is coupled between a backrest joint formed on the frame, on the one hand, and a headrest joint formed between the backrest or backrest platform and the headrest or headrest platform. There are therefore no degrees of freedom, so that the backrest or backrest platform follows the movement imposed on it by the articulation of the headrest or headrest platform. In this embodiment, due to the lack of direct support on the upright frame, stronger tensile forces are exerted on the backrest joint and the headrest joint than in the first embodiment.The advantage is that the upright frame can be positioned closer to the back of the backrest and headrest / platform in the rest position, since there is no second pair of levers. Therefore, this design is particularly suitable for lighter mattresses and / or flatter units, such as slatted frames that are completely enclosed in a frame.

[0052] Particularly when used in a platform bed, the functional fitting can have a longitudinal member that can be mounted between a cross member in the middle of the frame and in the area of ​​the head end. Viewed from the side, it is positioned approximately midway between the frame side panels. To still achieve broad support for the head, back, leg, and footrests, a symmetrical, V- or Y-shaped upright frame is provided, the narrow side of which is hinged to the longitudinal member and splits into two arms that extend outwards. The arms provide the connection or contact to the head, back, leg, and footrests. Because the functional fitting is mirror-symmetrical and designed to emanate from the center axis of the bed frame, it is not necessary to create connections for the functional fitting near the side frame panels or even directly with them.This means that the same functional fitting can be used with several bed frames of different widths.

[0053] The linear motor, which is preferably rotatably articulated with its lower motor end to the outer front end in the installed position, and the erecting frame, which is preferably rotatably oriented with its lower fastening end to the inner front end, thus preferably form an approximately isosceles triangle in the lifting position together with the longitudinal member, although this is not essential for the operation of the invention.

[0054] Preferably, the pivotable linkage is effected via fork heads, which are arranged in particular on the linear motor at the rear end of the motor and the front lifting tube, or via profiles which rotatably engage an axis arranged in the longitudinal member.

[0055] According to the invention, the functional fitting can therefore be constructed in such a way that the lower motor end of the linear drive is aligned in the installed position to the outer end of the longitudinal member and the lower fastening end of the erection frame is rotatably articulated to the inner end of the functional fitting.

[0056] The linear drive's lifting tube, which is preferably accommodated in the housing of the linear drive so that it can move relatively freely, can be pivotally hinged as far as possible at the upper end of the upright frame, thus achieving particularly efficient power development, while at the same time ensuring that the functional fitting is very flat in the lowered, resting position. In a bed with a separately movable head and back support platform or head and back support or leg and foot support, this consists of a split longitudinal member, which is screwed to the bed frame with its outer end facing the head or foot end of the bed frame in the installed position, and is attached to this center platform or center plate with one end facing the center platform or a center plate.

[0057] This attachment to the central platform or central plate is preferably achieved by angle profiles attached to the side of the longitudinal member. These are attached to the side of the longitudinal member with a vertical leg extending in the installed position and are screwed to the underside of the central platform or central plate with a horizontal leg extending at right angles to this vertical leg. These angle profiles, preferably made of sheet steel, simultaneously stabilize the central platform or central plate to prevent sagging when a person sits down on them.

[0058] Particularly harmonious power development and thus particularly low power from the linear drive's electric motor is required when the rear end of the linear drive's motor engages the outer end of the longitudinal member and the mounting end of the erecting frame engages the inner end of the longitudinal member, in particular when it is pivotally connected. The greatest power from the electric motor is required to lift the erecting frame from its lowered rest position, because the vertical force required for lifting is lowest here. Once these first 10 to 15 percent of the adjustment range have been overcome, the electric motor is only subjected to minimal strain. To ensure the lowest possible power supply from the linear drive, it is advantageous if the end of the linear drive, with the housing and electric motor, is pivotably mounted as low as possible on the longitudinal member.

[0059] Therefore, an additional support block can be provided on the inside of the head and foot end sections, which extend vertically in the installed position, to which the rear end of the linear drive is or can be attached. This support block is sometimes also referred to as a mounting beam, mounting block, cross member, or crosspiece. It is arranged transversely to the longitudinal axis of the bed, preferably on the inside of the head or foot frame section at its lower ends, extending with the lower edge of the frame side section between the frame side sections, and forms a support edge offset inward from the bed frame, to which the front ends of the functional fitting can be attached.

[0060] Preferably, an angle profile is rotatably attached to the rear end via a rear fork head, which can be placed on this fastening beam or fastening block and screwed to it.

[0061] Preferably, such fastening beams or fastening blocks are provided on both the head side part and the foot side part in order to achieve the lowest possible force application point of the rear fastening end of the linear drive, in particular the rear fork head. A further optimization of the force distribution is achieved by the front end of the linear drive, in particular the front end of the relatively movable lifting tube, acting as high as possible on the erection frame, i.e., at a point that is as far as possible from the lower fastening end of the erection frame on the longitudinal member. This design of the functional fitting achieves the highest possible pitch of the linear drive even in the lowered rest position, so that a lower power output of the electric motor of the linear drive is required compared to the prior art.

[0062] In the particularly preferred embodiment, the front end of the linear drive, in particular the relatively movable lifting tube, engages a crossbeam extending between two fork-like, widening profile sections or profile supports of the upright frame. This allows for a particularly low positioning of the pivot point of the rear end of the linear motor and thus a relatively flat construction of the bed or bed frame of approximately 7-11 mm, which allows for the placement of drawers or substructures under the actual bed frame without noticeably increasing the overall system's height.

[0063] According to the invention, the longitudinal beam with the linear drive and the upright rod constitutes a separate functional assembly that can be attached to the base frame or the assembled bed frame with a seating platform. This makes the functional fitting according to the invention significantly easier to transport, package, and handle for professionals and end users compared to the prior art.

[0064] A functional head and back support unit that can be installed as a unit in a bed frame of a platform bed with a frame can be created by supplementing the functional fitting with a back support platform that is connected to the frame in an articulated manner via a back support joint, to which a back support bearing element for the back support steering lever is attached, and a head support platform that is articulated to the back support platform via a head support joint, to which the head support bearing element for the head support steering lever is attached.

[0065] An advantageous embodiment of the head and backrest unit provides that the headrest platform has at least two parallel headrest side frame elements and a headrest support beam that connects them and to which the headrest bearing elements for the headrest control levers are attached. At the same time, the backrest platform is composed of at least two parallel backrest side frame elements and at least one backrest support beam connecting them, to which the backrest bearing elements for the backrest control levers are attached to the backrest support beam of the headrest platform. The beams are stiffening crossbeams within the pivoting platforms. The springy slats of the slatted frame intended for the mattress can thus be mounted flexibly or floatingly on the respective side frame elements, since they do not have to absorb any transverse forces.

[0066] The greater inclination of the headrest compared to the backrest is achieved in the head and backrest unit in particular by the fact that the headrest steering lever is longer than the backrest steering lever and that in the lowered rest position of the upright frame, the distance x measured in the longitudinal direction s between the coupling joints on the headrest platform and on the backrest platform is smaller than the distance X A between the coupling joints on the upper arms of the erection frame.

[0067] In addition, the invention also encompasses a piece of reclining furniture in the form of a platform bed, comprising at least a bed frame with two parallel frame side parts extending along a longitudinal axis of the bed, as well as a head frame part and a foot frame part extending transversely across the width of the bed at a head and foot end. According to the invention, this platform bed has one of the two previously described head and back support units, through which a controlled movement of the head support platform and the back support platform is achieved when adjusted by a single linear motor.

[0068] Particularly preferably, an additional central platform extending in a lying plane between the frame side parts is provided, wherein the back support platform is connected to the central platform via a back support joint.

[0069] It is also possible for the frame to have at least one cross member extending between the frame side parts and for the back support platform to be connected to the cross member via a back support joint.

[0070] A head and back support unit for a slatted frame that functions as a unit is created by supplementing the functional fitting with a back support platform that is connected to the frame via a back support joint, and with a head support platform that is hinged to the back support platform via a head support joint and to which the head support bearing elements for the head support steering levers are attached.

[0071] By incorporating such a head and back support unit and a frame that comprises two parallel frame side parts and the head and foot frame parts connecting them, a ready-to-connect slatted frame can be created that only needs to be placed on a bed frame.

[0072] The frame can also include a central platform extending between the frame side panels at a lying level. This platform has slats that are fixed to the frame and cannot pivot. The central platform provides a central support for a mattress, which is partially raised via the head and backrest unit and, if present, a motorized leg and footrest unit. The area of ​​the central platform represents a folding zone for the mattress.

[0073] In preferred embodiments, the bed frame or slatted base also includes a leg and foot support unit, which is divided into a thigh support platform and a foot and lower leg support platform, which are pivotally connected to one another about a further pivot axis.

[0074] Further features and advantages of the present invention will become apparent from the following description of preferred embodiments with reference to the accompanying drawings. Directional terminology such as "top", "bottom", "front", "back", "fore", "rear", etc. is used to refer to orientation in the described figures. Since components of embodiments can be positioned in a number of different orientations, the directional terminology is for illustrative purposes and is in no way limiting. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. The following detailed description is not to be taken in a limiting sense.

[0075] In this description, the terms "connected", "attached" and "integrated" are used to describe both a direct and an indirect connection, a direct or indirect connection and a direct or indirect integration.

[0076] In the figures, identical or similar elements are provided with identical reference numerals where appropriate. The representations in the figures are essentially to scale. However, to illustrate details, certain areas may be exaggerated in a way that is recognizable to a person skilled in the art. Furthermore, the drawings may be simplified for the sake of clarity and do not necessarily contain every detail that may be present in the practical embodiment.

[0077] Unless otherwise stated, the indefinite article and the definite article do not refer solely to a single component, but are to be understood as "at least one." The terminology includes the aforementioned words, variations thereof, and similar meanings. Furthermore, it will be understood by those skilled in the art that the terms "about," "substantially," and "similar" in connection with the dimensions and a characteristic of a component of the invention do not describe the described dimension and characteristic as a strict limit and / or parameter and do not exclude minor variations thereof that are functionally similar. At a minimum, descriptions containing numerical parameters also include variations of these parameters according to mathematical and manufacturing principles in the prior art, for example, rounding, deviations, and other systematic errors, manufacturing tolerances, etc.

[0078] Finally, if there are several identical components or elements, only one of them is provided with a reference symbol for reasons of clarity.

[0079] All features of the exemplary embodiments described below are also generally disclosed independently of one another within the scope of the invention. They show:

[0080] Figure 1 is an isometric view of a bed frame with a head and back support unit according to a first embodiment in the rest position and on a foot and leg support unit in the upright position;

[0081] Figure 2 is an enlarged view of the headboard area from Figure 1;

[0082] Figure 3 is a side sectional view of the bed frame with the head and back support unit in the rest position according to Figures 1 and 2;

[0083] Figure 4 is a side sectional view of the bed frame in an intermediate position; Figure 5 is a schematic functional view of the coupling mechanism formed by the functional fitting at the head end;

[0084] Figure 6 shows a detail of the head and back support unit in isometric view;

[0085] Figure 7 shows a detail of the erection frame of the head and back support unit in isometric view;

[0086] Figure 8 is a side view of the bed frame in the upright position;

[0087] Figure 9 of the head and back support unit in the upright position in an enlarged isometric view of the head part area;

[0088] Figure 10 is an isometric view of a bed frame with a head and back support unit according to a second embodiment in the rest position and on a foot and leg support unit in the upright position;

[0089] Figure 11 is a side sectional view of the bed frame with the head and back support unit in the rest position according to Figure 10;

[0090] Figure 12 is a side sectional view of the bed frame with the head and back support unit in a first intermediate position;

[0091] Figure 13 is a side sectional view of the bed frame with the head and back support unit in a second intermediate position; Figure 14 is a side sectional view of the bed frame with the head and back support unit in an upright position.

[0092] Figure 15 is an isometric view of a bed frame with a head and back support unit with a functional fitting according to a first embodiment and a foot and leg support unit;

[0093] Figure 16 Sections of an isometric view of the rear of the bed frame according to Figure 1;

[0094] Figure 17 is a schematic functional view of the coupling gear formed by the functional fitting at the head end;

[0095] Figure 18 shows a detail of the head and back support unit in isometric view;

[0096] Figure 19 shows a detail of the erection frame of the head and back support unit in isometric view;

[0097] Figure 20 sections of an isometric view of the rear of a framed slatted frame with a second embodiment of a functional fitting;

[0098] Figure 21 Parts of the framed slatted frame according to Figure 20 in an isometric view obliquely from the front;

[0099] Figure 22 shows the framed slatted frame according to Figure 20 in the rest position in a side view; Figure 23 shows the framed slatted frame according to Figure 20 in the rest position in a view from below and

[0100] Figure 24 is an enlarged detail of the illustration in Figure 16.

[0101] Figure 1 shows a bed frame 100 for a reclining furniture, as a box spring bed, which is provided with a first embodiment of a functional fitting 10 for a head and footrest unit designed according to the invention.

[0102] The bed frame 100 comprises two functional fittings 10, 70 arranged in alignment on a central longitudinal axis of a bed frame 50, which are mounted within the bed frame 50. The bed frame 50 comprises two frame side parts 51, 52 extending parallel to one another, as well as a head frame part 51 connecting the frame side parts 51, 52 at a head end and a foot frame part 53 at the foot end, thus forming a circumferentially closed, rectangular bed frame 50.

[0103] A center plate 55 is attached approximately in the middle to the top of the bed frame 50 and extends transversely between the frame side parts 51, 52. The top of the center plate 55 defines a lying plane of the bed frame 100. A backrest joint 31 is formed on the center plate 55 via two hinges arranged spaced apart from one another and on each edge, via which a backrest 32 of a head and backrest unit 30 is connected to the center plate 55.

[0104] On the other side of the center plate 55, facing the foot end, two spaced-apart hinges form a legrest base joint 61, via which a foot and legrest unit 60 is pivotally attached to the center plate 55. The center plate 55, the head and backrest unit 30, and the foot and legrest unit 60 are shown partially transparent in this and the following figures, but in practice are designed as wooden panels on which, for example, a mattress part rests.

[0105] The head and back support unit 30 and the foot and leg support unit 60 each contain support plates that are divided into two parts for even more comfortable adaptation to the human anatomy.

[0106] The head and backrest unit 30 is divided into a backrest 32, which is connected to the center plate 55 via the backrest joint 31, and a shorter headrest 34, which is arranged facing away from the center plate 55 and is connected to the backrest 32 via a headrest joint 33.

[0107] The foot and leg support unit 60 is divided into a short thigh support plate 62, which faces the center plate 55 and is connected to it via the leg support base joint 61, and a longer foot and lower leg support 64, which is arranged facing away from the center plate 55. The thigh support 62 and the foot and lower leg support 64 are pivotally connected to one another via a foot and lower leg support joint 63. In Figure 1, the head and back support unit 30 is in a rest position in which the back support 32 and the connected headrest 34 are completely lowered. In the rest position, the back support 32 and the headrest 34 extend parallel to the center plate 55 and, together with the center plate 55, define a lying plane. The foot and leg support unit 60, however, is located in Figure 1 in a raised and angled position above the lying level.

[0108] Each functional fitting 10, 70 comprises a longitudinal beam 11, 71 designed as a rectangular steel profile, which is predominantly made of painted steel and extends centrally under the bed frame 50 along the bed's longitudinal axis. The longitudinal beam 11 is connected to the head frame section 51 via a mounting bracket 11.1. The longitudinal beam 71 is attached to a cross member located behind the foot frame section 53. Angle profiles 11.1 extending transversely to the longitudinal axis are attached to the respective inner end faces of the longitudinal beams 11, 71 on both sides, the inner legs of which are attached laterally to the longitudinal beams 11, 71. They have horizontal mounting legs which extend transversely to the longitudinal axis of the longitudinal beams 11, 71 and can be screwed to the underside of the central plate 55 in the installed position in order to thus attach the functional fittings 10, 70 on the one hand on the inside via an angle profile 11.2 to the bed frame 50 and simultaneously secure the center plate 55 against bending in the middle, for which purpose the angle profiles 11.1 are preferably designed as steel profiles. For stability reasons, the functional fittings 10, 70 are constructed from angled or drawn steel profiles.

[0109] At the outer end of the functional fittings 10, 70, a motor base bearing 22 is arranged, on which the respective rear end of a linear drive 21, 75 is pivotally mounted. The linear drives 21, 75 each comprise a lifting tube whose length can be adjusted by an electric motor drive. The motor base bearing 22 is arranged as close as possible to the outer and lower end of the longitudinal member 20, so that the angle at which the linear drive engages the upright frame 12 is as large as possible and the force required for the uprighting movement of the head and backrest unit 30 is reduced by extending the effective lever arm.

[0110] Each erecting frame 12, 72 is formed by two interconnected arms, each having a lower fastening end for lateral articulation to the respective longitudinal member 11, 71, i.e. enclosing the latter on both sides with an axis arranged therebetween, and extending in the longitudinal direction from this lower fastening end parallel to each other on both sides of the longitudinal member 11, 71, initially merging in the longitudinal direction into a widened report in which the distance to the profile angles widens, and at their free upper end merging again into end sections extending parallel to each other, which are referred to as upper arms 13.

[0111] The design and function of the two functional fittings 10, 70 for the head and foot ends are largely identical with regard to the features described so far. Both functional fittings 10, 70 are designed to not only raise the two separate and articulated support plates 32, 34, 62, 64 with a single motorized linear drive, but also to position them in which the back support 32 and the head support 34, or the thigh support 62 and the foot and lower leg support 64, are aligned at a specific angle to each other, thus enabling a comfortable posture for the person lying on the bed.Since the functional fittings 10, 70 are each mirror-symmetrical with respect to the longitudinal beams 11, 71 and the forces on the supports 32, 34, 62, 64 can be easily absorbed by the wide upright frames 12, 72, stable support is achieved without the need to arrange parts of the functional fittings directly on the frame side parts 52, 54. Rather, sufficient free space remains between the upright frames 12, 72 and the frame side parts 52, 54 so that even narrower or wider bed frames can be equipped with the same functional fittings. For moving and transport, the bed frame 50 can be disassembled in the known manner. The removed functional fitting 10, 70 with longitudinal beams 11, 71 then has small dimensions in width and length and a shallow depth and can be easily stowed away.

[0112] The design and function of the respective upright frame 12, 72 differs between the head and backrest unit 30 on the one hand and the foot and leg support unit 60 on the other. If the upright angle of the backrest 32 and the thigh support 62 relative to the center plate 55 is defined as positive and related to the lying plane defined by the center plate 55, then, at least in the end position of the upright position, the headrest 34 should assume a positive angle relative to the backrest 32, i.e., the headrest 3 should be more inclined than the backrest. In contrast, in the upright position of the foot and leg support unit 60, a negative angle, i.e., a lowered position, should be established between the thigh support 62 and the foot and lower leg support 64. This requires different designs of the functional fittings 10, 70.The functional fitting 70 for the foot and leg support unit 60 is simple in design. The upright frame 72 is connected on one side to the longitudinal beam 71 in an articulated manner and on the other side to a mounting bracket on the underside of the foot and lower leg support 64. The linear drive 75, which is attached on the one side to the upright frame 70 in an articulated manner with a cross member and on the other side to the longitudinal beam 71, pivots the upright frame 70 progressively upwards when the motorized linear drive 75 is actuated and raises it relative to the center plate 55.

[0113] The joint 65 on the underside of the foot and lower leg support 64, viewed from the side, moves along a path determined, on the one hand, by the constant length between the joints of the upright frame 72 and the constant length between the joints 61, 63, and, on the other hand, by the variable length of the lifting tube on the linear drive 75. This forced guidance not only raises the foot and lower leg support 64, but also displaces it in the longitudinal direction of the bed frame 100 toward the center plate 55. The thigh support 62 coupled between them is moved into a steep position quite quickly, not least due to its short length, while the foot and lower leg support 64 remains in its rest position approximately parallel to the lying surface during the movement into the upright position and, at the end of the movement, lowers slightly toward the foot frame part 53.

[0114] The erection frame 12 on the head and back support unit 30 is constructed similarly to the erection frame 72 for the foot section with regard to a V-shaped base element, also referred to as a "swing arm", which comprises the two upper arms 13 and a cross member 14 connecting them, to which the linear drive 21 is hinged.

[0115] However, the aim is to ensure that the headrest 34 never assumes a negative angle relative to the backrest 32 during any phase of movement of the head and backrest unit 30, i.e., that it does not tilt backward. Rather, the headrest 34 should be inclined more toward the center of the bed frame 100 than the backrest 32 to which it is connected, at least in the end position of the upright position of the backrest 32.

[0116] For this purpose, the functional fitting 10 for the head and backrest unit 30 is specially designed, as explained using the enlarged illustration of the head area in Figure 2.

[0117] As already described, the erection frame 12 is formed by two upper arms 13 connected to one another via a cross member 14. These upper arms 13 originate from lower arms, each having a lower attachment end for lateral articulation to an erection frame base joint 15 on the longitudinal member 11. The lower arms extend longitudinally from the erection frame base joint 15, initially parallel to one another, and run close to the longitudinal member 11 on both sides. Further in the longitudinal direction, they then initially merge into a widened area, where the distance to the longitudinal member 11 increases, and at their respective free ends, merge again into end sections extending parallel to one another, which form the upper arms 13. The upper arms 13 are at a significant distance from the side surfaces of the longitudinal member 11.The widening of the upper arms 13 must result in such a lateral offset relative to the side surfaces of the longitudinal member 11 that, in the rest position shown in Figures 1 and 2, the linear drive 21 can be completely accommodated in the free space between the longitudinal member 11 and the left upper arm 13 of the erection frame 12.

[0118] In the illustrated embodiment of a functional fitting 10, an additional backrest steering lever 16 is provided on each of the two upper arms 13, which is connected both in an articulated manner to the upper arm 13 and to a backrest bearing element 18 on the underside of the backrest 32. The steering levers 16 are attached to coupling joints 16.1, which are arranged on the upper arms 13 approximately midway between the base of the cross member 14 and the end near the head frame part 51.

[0119] At the outermost end, headrest steering levers 17 are provided on both upper arms 13, which are connected on the one hand to a coupling joint 17.2 on the upper arm 13 and on the other hand to a coupling joint 17.1 on a headrest bearing element 19.

[0120] Figure 3 shows the bed frame 100 in a lateral sectional view from the left, with the left side frame part 51 removed, and with the head and back support unit 30 and the foot and leg support unit 60 in the same position as in Figures 1 and 2.

[0121] On the right is the erected foot and leg support unit 60. The linear drive 75 and the erection frame 72, together with the section of the longitudinal beam 71 located between them, form a triangle that determines the height of the foot and lower leg support 64. Their inclination is determined by the articulated chain, which is formed by connecting the foot and lower leg support 64 to the center plate 55 via the lower leg support hinges 63, the thigh support 62, and the leg support base hinges 61.

[0122] On the left in Figure 3, the head and backrest unit 30 is still in the rest position. The motor base mount 22 is located on the longitudinal member 11 near the head frame part 51. The motor cross member mount 23 on the cross member 14 is located approximately halfway between the top of the longitudinal member 11 and the bottom of the backrest 32.

[0123] In order to tilt the headrest 34 increasingly more than the backrest 32 during the upright movement relative to the lying plane L, the functional fitting 10 is designed so that the headrest 34 rises synchronously with the backrest 32. Furthermore, fixed stops, described separately below, ensure that the headrest 34 never tilts backward relative to the backrest 32.

[0124] In particular, the functional fitting 10 achieves a movement in which the headrest 34 is raised synchronously during the entire uprighting movement of the backrest 32 and is additionally tilted relative to the backrest 32 towards the center of the bed.

[0125] Figure 4 shows the bed frame 100 again in a lateral sectional view from the left, with the left side frame part 52 removed. By extending the lifting tube of the linear drive 21, the upright frame 12 has been raised from the rest position shown in Figure 3 and now forms an acute angle with the lying plane L, with both steering levers 16, 17 inclined toward the center of the bed frame 100. The headrest 34 is no longer in the same plane as the backrest 32.

[0126] The kinematics in the head and backrest unit 30 according to the invention is achieved by the special properties of the functional fitting 10.

[0127] For explanation, Fig. 5 shows a view of the head and backrest unit 30 abstracted from Fig. 4, whereby it should be taken into account that the abstracted model in Fig. 5 only shows one functional level through each of the upper arms 13, while the real functional fitting 10 has two parallel and identically designed functional levels due to the two upper arms 13 on the upright frame 12:

[0128] In an area of ​​the upper arm 13, which extends between the cross member 14 and the free end of the upper arm 13, a coupling mechanism is formed with a total of five fixed elements, which are shown as rods, and seven parallel pivot axes, which are shown as circles.

[0129] The rods in the coupling mechanism are formed by the erection frame 12 including the upper arms 13, the steering levers 16, 17, the back support 32 and the head support 34.

[0130] A fixed axis is formed by the backrest joint 31 between the center plate 55 and the backrest 32; another fixed axis is formed by the upright frame base joint 15.

[0131] A movable axis is formed by the headrest joint 33 between the backrest 32 and the headrest 34. - Two of the movable axes are connected by coupling joints

[0132] 16.2, 17.2 for the steering levers 16, 17, which are located on the upper arms 13. The distance between them is called X A designated.

[0133] - The remaining two movable axes are formed at the connection of the coupling joints 16.1, 17.1, to which the bearing levers 16, 17 are connected to bearing elements 18, 19 on the undersides of the back and headrests 32, 34, respectively. The headrest joint 33 is located longitudinally between them, but in a position that is higher with respect to the upright frame 12 than that of the coupling joints 16.1, 17.1.

[0134] - The distance xs between the coupling joints 16.1, 17.1 in the longitudinal direction of the upper arm 13 is smaller than the distance X A . In addition, the end-side steering lever 17 on the headrest 34 is slightly longer than the steering lever 16 connected to the backrest 32.

[0135] - Functionally, the movement of the upper arms 13 of the upright frame 12 and the back support 32 is determined only by a part of the coupling mechanism, which comprises a four-bar chain with the rods 12, 16 and 32 as well as the joints 15, 16.1, 16.2 and 31.

[0136] - Another part of the coupling mechanism, which controls the movement of the headrest 34, is connected to the aforementioned four-bar linkage via the common joints 16.1, 16.2. This part also includes the joints 17.1,

[0137] 17.2, 33.

[0138] Since the headrest 34 is connected to the backrest 32 via a total of five joints, an additional degree of freedom is provided, allowing the position of the headrest 34 relative to the backrest 32 to be indeterminate. To ensure that the headrest 34 moves relative to the backrest 32 only in such a way that it tilts toward the center of the bed but does not fall backward, the steering lever 17 is longer than the steering lever 16.

[0139] As further measures to tilt the headrest 34 from the rest position in the intended direction, i.e., toward the center plate 55, and to prevent it from tipping backwards and downwards, fixed stops are provided. These are visible in the isometric detailed view in Figure 6 on the part of the upright frame 12 located near the head frame part 51. In Figure 6, the headrest and backrest 32, 34 are each in the fully lowered rest position. Fixed stops 17.4 in the form of welded round steel sections are attached to the two upper arms 13 of the upright frame 12. The rear, lower edge of the steering lever 17 rests on them.

[0140] An additional fixed stop 17.3 is attached to each of the headrest bearing elements 19, against which the steering lever 17 rests with its front, upper edge. The steering lever 16 has only one fixed stop 16.4, which is designed as a notch in the steering lever 16.

[0141] Figure 7 shows the support of the steering lever 16 in a further isometric detail view. The notch for the fixed stop 16.4 extends laterally inward by approximately 3 / 4 of the sheet thickness of the steering lever 16, allowing for stable support on the upper edge of the upper arm 13.

[0142] Figure 8 is, like Figures 3 and 4 above, a lateral sectional view through the bed frame 100 from the left, showing the upright position of the head and backrest unit 30. The lifting tube 24 of the linear drive 21 is now fully extended. The motor cross member bearing 23 rests against the rear of the backrest 32, so that the maximum possible end position of the backrest 32 is reached. The backrest 32 thereby assumes an angle of approximately 60° to the lying plane L. The headrest 34 is even approximately perpendicular to the lying plane L. The steering lever 16 is fixed in place by a stop element 16.3 and / or an axis of the coupling joint 16.1 and / or another fixed stop resting on the upper edge of the arm 13.

[0143] Figure 9 shows the upright position of the head and back support unit 30 in an enlarged isometric view of the head area of ​​the bed frame 100. This particularly shows the largely symmetrical design of the head and back support unit 30 with the central longitudinal member 11 and the V-shaped upright frame 12 in the upright position. The stability of the upright back support 32 against lateral torsions, which occur, for example, when the back support is subjected to a load very far off-center, is achieved by a stable quadrilateral of forces, indicated by the dotted line. This stability is achieved in particular by the upper arms 13, which extend laterally outwards and are articulated to the back support bearing elements 18.

[0144] The position of the backrest bearing elements 18 in the transverse direction of the bed frame 100 is selected such that they are arranged approximately 1 / 4 to 1 / 3 of the total width from the respective side edge of the backrest 32. Furthermore, the arrangement of the hinges forming the backrest joint 31 and the headrest joint 33 is each selected close to the side edge of the bed frame 100. Figure 10 shows a second embodiment of a bed frame 100' designed according to the invention for a piece of reclining furniture, in particular for a box spring bed. This comprises two functional fittings 10', 70 arranged coaxially along the central longitudinal axis of a bed frame 50, which are mounted within the bed frame 50 for the box spring bed.

[0145] The design of the bed frame 50 with head frame part 51, foot frame part 53, side frame parts 52, 54, and center plate 55, the backrest 32 connected to the center plate 55 via a backrest joint 31, and the headrest 34 connected to the latter via a headrest joint 33 are each identical to the first described embodiment. As in the first embodiment, both supports 32, 34 are the same width. The backrest 32 is again approximately 2 to 3 times longer than the headrest 34.

[0146] Likewise, the leg and footrest unit 60 with the functional fitting 70 is identical in construction and function to the first embodiment.

[0147] In Figure 10, the leg and footrest unit 60 is in the fully raised upright position, while a head and backrest unit 30' is fully lowered.

[0148] The design and function of the two functional fittings 10', 70 for the head and foot ends are largely identical with regard to the features described so far. Both functional fittings 10', 70 are designed to not only raise the two separate and articulated support plates with a single motorized linear drive, but also to position them in which the back support 32 and the head support 34, or the thigh support 62 and the foot and lower leg support 64, are aligned at a specific angle to each other, thus enabling a comfortable posture for the person lying on the bed.

[0149] The head and backrest unit 30' according to the second embodiment is based on the longitudinal member 11, which is connected to the head frame part 51 and the center plate 55 via angle profiles 11.1, 11.2.

[0150] The erection frame 12' is V-shaped. It is formed by two interconnected arms, each having a lower attachment end for lateral articulation to the respective longitudinal member 11 and which, towards the end, merge into upper arms 13', which run at a lateral distance from one another and from the longitudinal member 11. They are connected via the cross member 14, which extends transversely across the longitudinal member 11. The linear drive 21 is articulated, on the one hand, to a motor base bearing on the longitudinal member 11 near the head frame part 51, and, on the other hand, to a motor cross member bearing 23 on the cross member 14'. The linear motor 21 is accommodated in the free space between the left upper arm 13' and the longitudinal member 11.

[0151] The only, yet important, difference in the head and backrest unit 30' compared to the first embodiment is the manner in which the backrest 32 is supported on the upright frame 12'. Figure 11 shows the bed frame 100' in a side sectional view through the bed frame 50, with the left side frame part removed. At the outermost end of the upright frame 12', a headrest steering lever 17 is provided on each of the two upper arms 13', which is connected on the one hand to a coupling joint 17.1 on the upper arm 13 and on the other hand to a coupling joint 17.2 on a headrest bearing element 19. The headrest 34 is supported above this.

[0152] Additionally, each upper arm 13' is provided with a pair of rollers 20', each with a rotation axis extending just above the upper arm 13'. In the rest position with the head and backrest unit 30' lowered, the rollers 20' have no contact with the backrest 32. The backrest 32 is held only by the hinge axes 31, 33.

[0153] The length of the steering lever 17 and the position of the rollers 20' are coordinated in such a way that at the beginning of the uprighting movement of the head and backrest unit 30', a so-called leading movement of the headrest 34 is possible, i.e. the headrest 34 is already tilted before the rollers 20' come into contact with the backrest 32.

[0154] This becomes clear when comparing the rest position in Figure 11 and a first intermediate position in Figure 12:

[0155] Figure 12 shows the bed frame 100' in the analogous side sectional view as before. The lifting movement has already been initiated. The stand-up frame 12' has been raised slightly compared to the position in Figure 11. The headrest 34 has been moved significantly out of the lying plane L via the control lever 17. Here it already occupies an angle of more than 30° to the lying plane L, while the back support 32 is still in the lying plane L. The rollers 20' now have initial contact with the rear side of the back support 32. The contact point of the rollers 20' is - viewed in the longitudinal direction of the bed frame 50 - on the edge area of ​​the back support 31 facing the head end. The angle α enclosed between the back support 32 and the headrest 34 is approximately 150°.

[0156] A characteristic of the second embodiment of the functional fitting 10' for the head and backrest unit 30' is that this angle between the supports 32, 34 is maintained after the headrest 34 has been advanced beforehand, or according to a special embodiment, is essentially maintained and can differ in the range from 120° to 150°, while the backrest 32 is raised further.

[0157] Figure 12 also shows that the motor base bearing 22 of the linear drive 21 is arranged as low as possible, i.e., on the underside or in the lower half of the profile height of the longitudinal member 11. At the same time, the motor cross member bearing 23 is located on the cross member 14 directly behind the rear side of the back support 32. This optimally utilizes the available space, so that an effective lever H is available between the erection frame base joint 15 and the extension of the force line of the lifting tube 24, via which an erecting torque is exerted on the erection frame 12'.Due to the longitudinal distance between the upright frame base joint 15 and the motor crossbeam bearing 23, the effective lever arm H is extended through the backrest 32 beyond the lying plane L, while at the same time a space-saving arrangement of the entire functional fitting 10' including the linear drive 21 is possible within the given height of the bed frame 50. Figure 13 shows the bed frame 100' in a second intermediate position, again in a similar lateral sectional view. As the upright frame 12' is further erected, the rollers 20' push the backrest 32 upwards so that it is lifted out of the lying plane L. The angle α between the supports 32, 34 is always not maintained.

[0158] In the illustration in Figure 14, the end position of the upright position has almost been reached. The back support 32 is now at an angle of 40° to 60° to the lying plane L. The angle α between the back support 32 and the head support 34 is still approximately 150°. The contact point of the rollers 20' with the rear of the back support 32 has now been shifted significantly towards the center of the back support 32, viewed in the longitudinal direction. If the lifting tube 24 of the linear drive 21 can extend further, the upright position can be increased somewhat from the position shown in Figure 13, namely until the cross member 14 abuts the back support 32 from behind.

[0159] Figure 15 shows a bed frame 200 for a reclining furniture as a platform bed, which is provided with a first embodiment of a functional fitting 210 designed according to the invention for a head and back support unit 230 and also contains a functional fitting 270 for a foot and leg support unit 260.

[0160] The functional fittings 210, 270 are mounted on the bed frame 200 within a bed frame 250. The bed frame 250 comprises two frame side parts 251 extending parallel to one another in the longitudinal direction, only one of which is shown here, as well as a head frame part 253 connecting the frame side parts 251 at a head end and a foot frame part 254 at a foot end, thereby forming a circumferentially closed, rectangular frame 250 of the bed frame 200. In a central region of the length, cross members 257, 258 extend between the frame side parts 251.

[0161] On each of the frame side parts 251, a bearing for a backrest joint 240 is formed, via which a backrest platform 232 of the head and backrest unit 230 is connected to the frame 250. On the other side, facing the foot end, a legrest base joint 261 is formed, via which a foot and legrest unit 260 is pivotally attached to the frame 250.

[0162] Also visible in a central region of the length of the frame 250 is a support for a central plane 255. The central plane 255 comprises slats mounted stationary on the frame 250, which are thus neither part of the head and backrest unit 230 nor of the foot and legrest unit 260.

[0163] The head and back support unit 230 and the foot and leg support unit 260 each contain two separately movable support platforms to enable comfortable adaptation to the human anatomy.

[0164] The head and backrest unit 230 is divided into a backrest platform 232, which is connected to the frame 250 via the backrest joint 240, and a shorter headrest platform 234, which is connected via a headrest joint 233 : connected to the back support platform 232.

[0165] The foot and leg support unit 260 is in turn divided into a short thigh support platform 262, which is connected to the bed frame 250 via the leg support base joint

[0166] 261, as well as a longer foot and lower leg support platform 264. The thigh support platform

[0167] 262 and the foot and lower leg support platform 264 are pivotally connected to each other via a foot and lower leg support joint 263.

[0168] In Figure 15, the head and backrest unit 230 is in a raised position in which the backrest platform 232 and the connected headrest platform 234 are raised as far as possible. The foot and legrest unit 260 is in a raised and angled position above a lying level.

[0169] Each functional fitting 210, 270 comprises a longitudinal beam 211, 271 formed as a rectangular steel profile, which is primarily made of painted steel and extends centrally under the bed frame 250 in the direction of the bed's longitudinal axis. The longitudinal beam 211 is connected to the head frame part 253 via a mounting bracket 211.1 and to the cross beam 258 via another end fitting. The longitudinal beam 271 is attached to the cross beam 257 and to the foot frame part 254.

[0170] At the respective end of the functional fittings 210, 270 facing the outside of the bed, a motor base bearing 222, 273 is arranged, on which the respective rear end of a linear drive 221, 275 is pivotally mounted. The linear drives 221, 275 each comprise a lifting tube 224 whose length can be adjusted by an electric motor drive. The motor base bearing 222 for the head and back support unit 230 is arranged as close as possible to the outer and lower end of the longitudinal member 211, so that the angle at which the linear drive engages the upright frame 212 is as large as possible and the force required for the upright movement of the head and back support unit 230 is reduced by extending the effective lever arm.

[0171] Each erecting frame 212, 272 is formed by two interconnected arms, each having a lower attachment end for lateral articulation to the respective longitudinal member 211, 271, i.e., enclosing the latter on both sides with an axle 215, 275 arranged between them. They then transition into a widened, V-shaped area in which the distance between the arms widens. In the erecting frame 212 for the head and backrest unit 230, the arms transition again at their free upper end into end sections extending parallel to one another, which are referred to as upper arms 213. The erecting frames 212, 272 are each supported by U-shaped bearing elements that are supported on the cross members 257, 258.

[0172] The design and function of the two functional fittings 210, 270 for the head and foot ends are largely identical with regard to the features described so far. Both functional fittings 210, 270 are designed to not only raise the two separate and articulated support platforms 232, 234, 262, 264 with a single motorized linear drive, but also to position them in which the back support platform 232 and the head support platform 234, or the thigh support platform 262 and the foot and lower leg support platform 264, are aligned at a specific angle to each other and to the bed frame 250, thus enabling a comfortable posture for the person lying on the bed.

[0173] The forces on or from the support platforms 232, 234, 262, 264 can be well absorbed by the wide upright frames 212, 272, so that stable support is achieved without parts of the functional fittings 210, 270 having to be arranged directly on the frame side parts 251. Rather, there is still sufficient free space between the upright frames 212, 272 and the frame side parts 251, so that even narrower or wider bed frames with the same functional fittings 210,

[0174] 270. For moving and transport, the bed frame 250 can be disassembled in the usual way. The removed functional fitting 210, 270 with longitudinal support 211,

[0175] 271 has small dimensions in width and length and also a small depth and can therefore be easily stowed away.

[0176] The design and function of the respective upright frame 212, 272 differs between the head and back support unit 230 on the one hand and the foot and leg support unit 260 on the other hand. If the upright angle of the back support platform 232 and the thigh support platform 262 towards the upper edge of the bed frame 250 is defined as positive and is related to a lying plane parallel to the upper edge of the bed frame 250, then the head support platform 234 should, at least in the end position of the upright position, assume a positive angle relative to the back support platform 232, i.e. the head support platform 234 should be inclined more towards the bed frame 250 than the back support platform 232. In contrast, in the upright position of the foot and leg support unit 260, there should be a gap between the thigh support platform 262 and the foot and Lower leg support platform 264 a negative angle, i.e. a lowered position.This requires different designs of the functional fittings 210, 270.

[0177] The functional fitting 270 for the foot and leg support unit 260 is of simple design. The upright frame 272 is connected, on the one hand, to the longitudinal beam 271 in an articulated manner and, on the other hand, to a bearing element 279 on the underside of the foot and lower leg support platform 264. By means of the linear drive 275, which is attached, on the one hand, to the longitudinal beam 271 in an articulated manner, the upright frame 270 is increasingly pivoted upward upon actuation of the motorized linear drive 275 and raised relative to the central platform 255.

[0178] The joint 265 on the underside of the foot and lower leg support platform 264 is, as seen in a side view, moved on a path that is determined on the one hand by the constant length between the joints of the upright frame 272 and the constant length between the joints 261, 263, and on the other hand by the variable length of the lifting tube on the linear drive 275. This forced guidance not only raises the foot and lower leg support platform 264, but also shifts it towards the center in the longitudinal direction of the bed frame 200. The thigh support platform 262 coupled in between is moved into a steep position very quickly, not least due to its short length, while the foot and lower leg support platform 264 remains in a rest position approximately parallel to the lying plane during the movement into the upright position and still bends slightly at the end of the movement. towards the foot frame part 254.The erection frame 212 on the head and back support unit 230 is constructed similarly to the erection frame 272 for the foot and leg support unit 260 with regard to a V-shaped base element, also referred to as a "swing arm," which, in addition to the arms spread apart from one another, comprises the two upper arms 213 and a cross member 214 connecting them, to which the linear drive 221 is articulated.

[0179] However, unlike the foot and leg support unit 260, the headrest platform 234 should never assume a negative angle relative to the backrest platform 232 during any phase of movement of the head and backrest unit 230, i.e., it should never tip backward. Rather, the headrest platform 234 should be inclined more toward the center of the bed frame 200 than the backrest platform 232 to which it is connected, at least in the end position of the upright position of the backrest platform 232.

[0180] For this purpose, the functional fitting 210 for the head and backrest unit 230 is specially designed, as explained in the enlarged illustration in the isometric view of the rear in Figure 16.

[0181] As already described, the erection frame 212 is formed by two upper arms 213 connected to one another via a cross member 214. These upper arms 213 originate from arms that each have a lower fastening end for lateral articulation to an erection frame base joint 215 on the longitudinal member 211. The arms initially extend a short distance parallel to one another from the erection frame base joint 215, running close to the longitudinal member 211 on both sides. They then transition diagonally into a widened area in which the distance to the longitudinal member 211 continuously increases, and at their respective free ends, they again merge into end sections extending parallel to one another, forming the upper arms 213. The upper arms 213 are at a significant distance from the side surfaces of the longitudinal member 211.The widening of the arms must result in such a lateral offset relative to the side surfaces of the longitudinal member 211 that the linear drive 221 can be completely accommodated in the free space between the longitudinal member 211 and the left upper arm 213 of the erection frame 212 in a rest position (not shown) with the head and backrest unit 230 fully lowered.

[0182] On the functional fitting 210, an additional backrest steering lever 216 is provided on each of the two upper arms 213, which is connected both to the upper arm 213 and to a backrest bearing element 218. The two backrest bearing elements 218 are attached to the back and underside of a backrest support beam 238 on the backrest platform 232. The backrest steering levers 216 are attached to coupling joints 216.1, which are arranged on the upper arms 213 approximately midway between the attachment of the cross member 214 and the upper arm end.

[0183] On each of the two upper arms 213, a headrest steering lever 217 is provided at the respective outermost end, which in turn is connected to a coupling joint 217.2 on the upper arm 213 and, on the other hand, to a coupling joint 217.1 on a headrest bearing element 219. The headrest bearing elements 219 are attached to a headrest support beam 236 of the headrest platform 234. The backrest joint 240 is designed as a four-bar linkage in the embodiment shown in Figure 16. Figure 24 is an enlarged detail of the illustration according to Figure 16. There, at the base of the backrest joint 240, two articulated levers 243, 244 can be seen, which are mounted on two spaced-apart joints 241, 242. Two further joints are not visible; They are attached to the side surfaces of the backrest side frame elements 237.Due to the four-bar linkage, the back support 232 is simultaneously shifted slightly towards the head end when the bed is erected, so that a mattress lying on it is bent less strongly in the area of ​​the foot point of the back support 232 than with a fixed joint point.

[0184] The kinematics in the head and backrest unit 230 according to the invention are achieved through the special properties of the functional fitting 210. For explanation, Fig. 17 shows an abstracted view of the head and backrest unit 230. It should be noted that the abstracted model in Fig. 17 only shows one functional plane through each of the upper arms 213, while the actual functional fitting 210 has two parallel and identically designed functional planes due to the two upper arms 213 on the upright frame 212:

[0185] In a region of the upper arm 213, which extends between the cross member and the free end of the upper arm 213, a coupling mechanism is formed with a total of five fixed elements, which are shown as rods, and seven parallel pivot axes, which are shown as circles.

[0186] The rods in the coupling mechanism are formed by the erection frame 212 including the upper arms 213, the steering levers 216, 217, the back support platform 232 and the head support platform 234.

[0187] A fixed axis is provided by the backrest joint

[0188] 231; another fixed axis is formed by the erection frame base joint 215.

[0189] A movable axis is provided by the headrest joint

[0190] 233 formed between backrest platform 232 and headrest platform 234.

[0191] Two of the movable axes are connected by coupling joints 216.2, 217.2 for the head and backrest steering levers

[0192] 217, 126, which are located on the upper arms 213. The distance between them is referred to as xA.

[0193] The remaining two movable axes are formed at the connection of the coupling joints 216.1, 217.1, with which the bearing levers 216, 217 are each attached to bearing elements

[0194] 218, 219 are connected to the undersides of the back and headrests 232, 234. The headrest joint 233 is located longitudinally therebetween, but in a position that is higher with respect to the upright frame 212 than that of the coupling joints 216.1, 217.1.

[0195] The distance xS between the coupling joints 216.1, 217.1 in the longitudinal direction of the upper arm 213 is smaller than the distance xA in a preferred embodiment of the functional fitting 210. In addition, the end headrest steering lever 217 is on the headrest platform

[0196] 234 slightly longer than the one with the backrest platform

[0197] 232 connected back support steering levers 216. Functionally, the movement of the upper arms 213 of the erection frame 212 and the back support platform 232 is determined only by a part of the coupling gear, which comprises a four-bar chain with the rods 212, 216 and 232 as well as the joints 215, 216.1, 216.2 and 231.

[0198] Another part of the coupling mechanism, which controls the movement of the headrest platform 234, is connected to the aforementioned four-bar linkage via the common joints 216.1, 216.2. This part also includes the joints 217.1, 217.2, and 233.

[0199] Since the headrest platform 234 is connected to the backrest platform 232 via a total of five joints, an additional degree of freedom is provided, which allows the position of the headrest platform 234 relative to the backrest platform 232 to be indeterminate. To ensure that the headrest platform 234 moves relative to the backrest platform 232 only in such a way that it tilts toward the center of the bed but does not fall backward, the headrest steering lever 217 is longer than the backrest steering lever 216.

[0200] As a further measure to erect the headrest platform 234 from the rest position and to prevent it from tipping backwards and downwards, fixed stops are preferably provided, which are visible in the isometric detailed view in Figure 18 on the part of the erection frame 212 located near the head frame part 253.

[0201] In Figure 18, the headrest and backrest platforms 232, 234 are each in the fully lowered rest position. Fixed stops 217.4 in the form of welded round steel sections are attached to the two upper arms 213 of the upright frame 212. The rear, lower edge of the headrest steering lever 217 rests on these. A further fixed stop 217.3 is attached to each of the headrest bearing elements 219, against which the headrest steering lever 217 rests with its front, upper edge. The steering lever 216 has only one fixed stop 216.4, which is designed as a notch in the backrest steering lever 216.

[0202] Figure 19 shows the support of the steering lever 216 in another isometric detail. The notch for the fixed stop 216.4 extends laterally inward by approximately 3 / 4 of the sheet thickness of the steering lever 216, allowing for stable support on the upper edge of the upper arm 213.

[0203] Figure 20 is an isometric view of a framed slatted frame 200' from the rear, which is mounted on a functional fitting 210' constructed according to the invention.

[0204] The slatted frame 250' comprises two frame side parts 251', 252' extending parallel to one another in the longitudinal direction, as well as a head frame part 253' connecting the frame side parts 251', 252' at one head end, and a foot frame part 254' at the foot end, forming a circumferentially closed, rectangular slatted frame 250'. In a central region of the length, cross members extend between the frame side parts 251', 252', of which only the cross member 258' assigned to a head and back support unit 230' is visible in Figure 19. One end of a longitudinal member 211' of the functional fitting 210' for the head and back support unit 230' is mounted on the cross member 258'; the other end is connected to the head frame part 253'. In addition, the 200'' slatted frame has a 270' functional fitting for a 260' foot and leg support unit.

[0205] A backrest joint 240' is formed on the frame side parts 251', 252', via which a backrest platform 232' of the head and backrest unit 230' is pivotally connected to the slatted frame 250'. On the other side, facing the foot end, a legrest base joint 261' is formed, via which the foot and legrest unit 260' is pivotally attached to the slatted frame 250'.

[0206] A fixed center plane 255' is also visible in a central area of ​​the slatted frame 250'. The center plane 255' comprises slats mounted stationary on the bed frame, which are therefore neither part of the head and backrest unit 230' nor the foot and legrest unit 260'.

[0207] The head and backrest unit 230' and the foot and legrest unit 260' each contain two separately movable support platforms to enable comfortable adaptation to the human anatomy. The head and backrest unit 230' is divided into the backrest platform 232', which is directly connected to the slatted frame 250' via the backrest joint 240', and a shorter headrest platform 234', which is connected to the backrest platform 232' via a headrest joint 233'.

[0208] The foot and leg support unit 260' is in turn divided into a short thigh support platform 262', which is connected to the slatted frame 250' via the leg support base joint 261', and a longer foot and lower leg support platform 264'. The thigh support platform 262'' and the foot and lower leg support platform 264' are pivotally connected to one another via a foot and lower leg support joint 263'.

[0209] In Figure 20, the head and backrest unit 230' is in a raised position, in which the backrest platform 232' and the connected headrest platform 234' are raised as far as possible. The foot and legrest unit 260' is also in a raised and angled position beyond a lying level L. The functional fitting 270' is provided to move this.

[0210] The functional fitting 210' comprises a longitudinal beam 211' designed as a rectangular steel profile, which is predominantly made of painted steel and which extends longitudinally within the slatted frame 250'.

[0211] At the end of the functional fitting 210' facing the head frame part 253', a motor base bearing 222' is arranged, on which the respective rear end of a linear drive 221' is pivotally mounted. The linear drive 221' comprises a lifting tube 224' whose length can be adjusted by an electric motor drive and which is articulated to a motor crossbar bearing on a crossbar 214' of the erection frame 212'.

[0212] The erection frame 212' is formed by two arms, each having a lower attachment end for lateral articulation to the longitudinal member 211', thus enclosing the latter on both sides with an axle arranged between them, forming an erection frame base joint 215'. They then transition into a widened, V-shaped area in which the distance between the arms widens. In the erection frame 212'' for the head and backrest unit 230', the arms transition at their free upper end into short, parallel end sections. A headrest steering lever 217' is hinged to each of the two end sections, which is connected on the one hand to a coupling joint 217.2' at the respective end section of the arms and on the other hand via a coupling joint 217.1' to a headrest bearing element 219'.The headrest bearing elements 219' are attached directly to the underside of the lateral headrest side frame elements 235', so that the functional fitting 210' can also be used if only loosely mounted and / or spring-loaded slats extend between the headrest side frame elements 235', but no fixed girder or other type of rigid cross member is present.

[0213] Figure 21 shows the slatted frame 200' with frame 250' in an isometric view from the front. The slats, which form the actual mattress support, have been removed for clarity. They extend between the headrest side frame elements 235', which are aligned parallel to each other in pairs, the backrest side frame elements 37', and the corresponding side frame elements of the thigh support platform 262' and the foot and lower leg support platform 264'.

[0214] The functional fittings 210', 270' for the head and backrest unit 230' and the foot and legrest unit 260' are very similar in design and differ essentially in that the functional fitting 270' for the foot and legrest unit 260' does not include the headrest steering levers 217'. Otherwise, the functional fittings 210', 270' can be formed from several identical or similar parts, resulting in cost savings.

[0215] The V-shape of the erection frames 212', 272' provides stable support without requiring parts of the functional fittings 210', 270' to be arranged directly on the frame side panels 251', 252'. Rather, sufficient free space remains between the erection frames 212', 272' and the frame side panels 251', 252' for the motor drives.

[0216] As already described above for the bed frame 200, the headrest platform 234' of the framed slatted frame 200' should also be inclined more forward than the backrest platform 232', at least in the end position of the upright position. In contrast, in the upright position of the foot and leg support unit 260', a negative angle should be established between the thigh support platform 262' and the foot and lower leg support platform 264'.

[0217] The functional fitting 270' for the foot and leg support unit 260' has a support frame 272', which is articulated on the one hand to the longitudinal beam 271' and on the other hand to a bearing element 279 on the underside of the foot and lower leg support platform 264'. By means of the linear drive 275', which is articulated on the one hand to the longitudinal beam 271' and on the other hand to the cross member 274', the support frame 272' is increasingly pivoted upward upon actuation of the motorized linear drive 275' and raised relative to the level of the upper edge of the slatted frame 250'.The coupling joint 277' on the underside of the foot and lower leg support platform 264' is moved, as seen from the side, along a path determined, on the one hand, by the constant length between the joints 276', 278' of the upright frame 272' and the constant length between the joints 261', 263', and, on the other hand, by the variable length of the lifting tube on the linear drive 275'. This forced guidance not only raises the foot and lower leg support platform 264', but simultaneously displaces it in the longitudinal direction of the slatted frame 200' toward its center.The thigh support platform 262' coupled in between is transferred into a steep position quite quickly, not least due to its short length, while the foot and lower leg support platform 264' remains in the rest position approximately parallel to the lying plane during the movement into the upright position and at the end of the movement lowers only slightly in the direction of the foot frame part 254'.

[0218] The aim of the headrest platform 234' is to ensure that it does not tip backward at any stage of movement. At least in the final upright position, it should be inclined more toward the center of the slatted frame 200' than the backrest platform 232' to which it is connected. The upright frame 212' of the head and backrest unit 230' has a V-shaped base element, also referred to as a "swing arm," which, in addition to the arms spread apart from one another, includes a cross member 214' connecting these arms, to which the linear drive 221' is hinged. The widening of the arms leads to such a lateral offset relative to the side surfaces of the longitudinal member 211' that the linear drive 221' can be completely accommodated in the free space between the longitudinal member 211' and the erection frame 212' in a lowered rest position of the head and backrest unit 230'.

[0219] The longitudinal member 211' extends between an angle profile 211.1', which is supported on the head frame part 253', and a cross member 258', which is designed as a round tube and which extends in the region of the center plane 255' between the frame side parts 251', 252'.

[0220] The longitudinal member 271' extends between an angle profile 271.1', which is supported on the base frame part 254', and a cross member 257', which is also designed as a round tube and which also extends in the area of ​​the center plane 255' between the frame side parts 251', 252'.

[0221] As the side view of the slatted frame 200' in the rest position depicted in Figure 22 shows, the lying plane L is defined by the upper side of the slats that are part of the platforms 264', 262', 232', 234'. Furthermore, it can be seen that the motor base bearing 222' for the head and back support unit 230' is arranged very close to the head frame part 253' and is even positioned below the enclosure of the slatted frame 250'. Since the motor base bearing 222' is located directly next to the head frame part 253', the angle at which the linear drive engages the upright frame 212' is increased, and the force required for the upright movement of the head and back support unit 230' is simultaneously reduced by extending the effective lever arm.

[0222] The motor base mount 273' for driving the foot and leg support unit 260' is also located below the profile cross-section of the associated longitudinal member and protrudes downward from the enclosure by the frame 250'. The erection frames 212', 272' also each partially protrude downward from the enclosure of the frame 250'.

[0223] Figure 23 shows the slatted frame 200' from below in the rest position, i.e., the platforms 264', 262', 232', 234' form a continuous lying plane. The upright frame 212' for the headrest and backrest platforms 234', 232' and the upright frame 272' for the leg and footrest platforms 262', 264' each comprise arms spread apart in a V-shape, each connected to each other via a cross member 214', 274'. However, they are not mirror-symmetrical with respect to their respective longitudinal members 211', 271', and the longitudinal members 211', 271' are not aligned on a central axis M of the frame 250'.

[0224] Rather, they are offset laterally and arranged on different sides of the central axis M such that the lifting tubes of the linear drives 221', 275' are aligned with the central axis M. As a result, the frame 250' experiences less torsion when the linear drives 221', 275' are actuated. The slight asymmetry of the erection frames 212', 272' does not result in any disadvantages given the large support width.

[0225] Further aspects of the invention:

[0226] 1. Motorized functional fitting (10; 10') for a bed frame (100; 100') of a box spring bed, which bed frame (100; 100') comprises a bed frame (50) with at least one center plate (55), a back support (32) hinged thereto and a head support (34) hinged to the back support (32), with: at least: one erecting frame (12; 12') which comprises at least two arms connected to one another via at least one cross member (14; 14'), which is hinged via at least one head support steering lever (17) to a head support bearing element (19) to be connected to the head support (34) and which has at least one support element for supporting the back support (32) during erection, a linear drive (21) with a lifting tube (24), which is connected with one end to the erecting frame (12; 12') and can be supported with another end on a fixed point of the bed frame (100; 100''); CHARACTERIZED IN THAT the functional fitting (10;10') comprises a longitudinal beam (11) to be arranged on a bed frame central axis and connectable to the bed frame (50), to which the erection frame (12; 12') is articulated; THAT the erection frame (12; 12') is fork-shaped and has at least one lower arm which is articulated on the longitudinal beam (11, 11') at an erection frame base joint (15), THAT the erection frame (12; 12') comprises two upper arms (13; 13') which are spaced apart from one another and spaced apart from the longitudinal beam (11) arranged between them, THAT the cross member (14; 14') extends above the longitudinal beam (11) and transversely between the lower arms and / or the upper arms (13; 13') and connects them to one another, THAT the linear drive (21) is articulated on the longitudinal beam (11) and on the erection frame (12; 12') and, when the erection frame (12; 12') is lowered, is arranged between the longitudinal beam (11) and a the upper arms (13) of the erection frame (12; 12') are arranged;

[0227] 2. Functional fitting (10) according to aspect 1, CHARACTERIZED IN THAT the linear drive (21) is articulated to a motor base bearing (22) on the longitudinal member (11) and to a motor cross member bearing (23) on the cross member (14).

[0228] 3. Functional fitting (10) according to aspect 2, CHARACTERIZED IN THAT the engine base mount (22) is arranged on the underside or in the lower half of the profile height of the longitudinal member (11). . Functional fitting (10) according to one of aspects 1 to 3, CHARACTERIZED IN THAT the pivot angle of the control lever (17) for the headrest (34) is limited by at least one fixed stop (17.4) on the upper arm (13).

[0229] 5. Functional fitting (10) according to one of aspects 1 to 4, CHARACTERIZED IN THAT the pivoting angle of the control lever (17) for the headrest (34) is limited by at least one fixed stop (17.3) on the headrest bearing element (19).

[0230] 6. Functional fitting (10) according to one of aspects 1 to 5, CHARACTERIZED IN THAT the support element for the backrest (32) is designed as a backrest steering lever (16) which is articulated via a coupling joint (16.2) to the upper arm (13) of the upright frame (12) and via a coupling joint (16.1) to a backrest bearing element (18) to be fixedly attached to the backrest (32). 7. Functional fitting (10) according to aspect 6, CHARACTERIZED IN THAT

[0231] MARKED THAT the swivel angle of the handlebar lever

[0232] (16) for the back support (32) is limited by at least one fixed stop (16.4) of the handlebar lever (16) supported on the upper arm (13).

[0233] 8. Functional fitting (10) according to aspect 7, THEREFORE

[0234] INDICATED THAT the fixed stop (16.4) is

[0235] Notch of the handlebar lever (16) is formed.

[0236] 9. Functional fitting (10' ) according to one of aspects 1 to 3,

[0237] CHARACTERIZED BY THE FACT THAT the support element for the

[0238] Back support (32) is formed by at least one roller (20') which projects at least partially above the erection frame (12').

[0239] 10. Functional fitting (10' ) according to one of aspects 1 to 3,

[0240] CHARACTERIZED BY THE FACT THAT on each upper arm (13' ) a

[0241] pair of rollers (20' ) is arranged.

[0242] 11. Head and back support unit (30) for a bed frame

[0243] (100) of a box spring bed, which bed frame (100) has a bed frame (50) with at least one middle plate

[0244] (55), with at least: one functional fitting (10) according to one of the aspects 6 to 8, a backrest (32) to be connected in an articulated manner to the central plate (55), to which the backrest bearing element (18) is attached, and a headrest (34) articulated to the backrest (32), to which the

[0245] Headrest bearing element (19) is attached. 12. Head and backrest unit (30) according to aspect 11,

[0246] CHARACTERIZED BY THE FACT THAT the headrest steering lever

[0247] (17) is longer than the backrest steering lever (16) and THAT in the lowered rest position of the upright frame (12) the distance xS measured in the longitudinal direction between the coupling joints (16.1, 17.1) on the headrest (34) and on the backrest (32) is smaller than the distance xA between the coupling joints (16.2,

[0248] 17.2) on the upper arms (13) of the erection frame (12) .

[0249] 13. Head and backrest unit (30') for a bed frame (100') of a box spring bed, which bed frame (100') comprises a bed frame (50) with at least one center plate (55), with at least: one functional fitting (10') according to aspect 9 or 10; a backrest (32) to be connected in an articulated manner to the center plate (55), and a headrest hinged to the backrest (32).

[0250] (34) to which the headrest bearing element (19) is attached, wherein the at least one roller (20') in the lowered rest position of the erection frame (12') does not

[0251] Contact with the back of the backrest (32) and in an intermediate position in which the headrest is tilted by at least 15° with respect to a position defined by an upper edge of the

[0252] The lying plane (L) formed by the central plate (55) is inclined and rests against the back of the back support (32).

[0253] 14. Head and backrest unit (30; 30' ) according to one of the

[0254] Aspects 11 to 13, CHARACTERIZED IN THAT the backrest joint (31) and the headrest joint (33) are each connected by at least two spaced : Hinges with a common pivot axis are formed. 15. Box spring bed comprising a bed frame (100; 100' ) with a rectangular bed frame (50) which has two parallel frame side parts (51, 52) connecting these head and foot frame parts (51, 53), as well as at least one in a lying plane (L) between the frame side parts

[0255] (52, 54) extending central plate (55), and with a head and backrest unit (30; 30') according to one of aspects 11 to 14, wherein the backrest (32) is connected to the central plate (55) via a backrest joint (31).

[0256] 16. Motorized functional fitting (210; 210' ) for a

[0257] Bed frame (200) of a platform bed or for a framed slatted frame (200'), which bed frame (200) or slatted frame (200') comprises at least one frame (250; 250') and a back support platform (232; 232') hinged thereto, with at least: one erecting frame (212; 212') which is at least partially fork-shaped and comprises at least two arms which are spread apart from one another and laterally spaced from the longitudinal beam (211; 211') arranged between them, wherein the erecting frame (212; 212') is hingedly connected to the back support platform (232; 232'), a longitudinal beam (211; 212') which can be connected to the frame (250; 250'), 211' ) , to which the erection frame (212; 212' ) and the linear drive (221; 221' ) are articulated; a linear drive (221; 221' ) with a lifting tube (224;

[0258] 224' ) , which is articulated at one end to the erection frame (212; 212' ) and is supported at another end on a fixed point of the frame (250; 250' ); wherein the linear drive (221; 221' ) is arranged between the longitudinal beam (211;

[0259] 211' ) and the arms of the erection frame (212; 212' ), and wherein the cross member (214; 214' ) extends above the longitudinal member (211; 211' ) and transversely between the arms and connects them together,

[0260] CHARACTERIZED BY THE FACT THAT the back support platform

[0261] (232; 232' ) is connected to a headrest platform (234; 234' ) via a headrest joint (233; 233' ),

[0262] THAT the arms of the erection frame (212; 212') are each connected via a coupling joint (217.2; 217.2') to a headrest steering lever (217; 217'), which are each connected via a further coupling joint (217.1; 217.1') to a headrest bearing element (219; 219') to be connected to the headrest platform (234; 234').

[0263] 17. Functional fitting (210; 210' ) according to aspect 16, THEREFORE

[0264] CHARACTERIZED IN THAT the linear drive (221; 221' ) is mounted on a motor base bearing (222; 222' ) on the longitudinal member (211;

[0265] 211' ) and on an engine cross member bearing (23; 23' ) on the

[0266] Traverse (14; 14' ) is hinged.

[0267] 18. Functional fitting (210; 210' ) according to aspect 17, THEREFORE

[0268] CHARACTERIZED IN THAT the engine base mount (222; 222') is arranged on the underside or in the lower half of the profile height of the longitudinal member (211; 211'). 19. Functional fitting (210) according to one of aspects 16 to 18, CHARACTERIZED IN THAT the erecting frame (212) comprises two lower arms that spread apart from one another and two upper arms (213) that adjoin the ends of said arms and are aligned parallel to one another.

[0269] 20. Functional fitting (210; 210') according to one of aspects 16 to 19, CHARACTERIZED IN THAT the pivoting angle of the control lever (217; 217') for the headrest platform (234; 234') is limited by at least one fixed stop (217.4; 217.4') on the arms of the upright frame (212; 212').

[0270] 21. Functional fitting (210; 210') according to one of aspects 16 to 20, CHARACTERIZED IN THAT the pivot angle of the control lever (217; 217') for the headrest platform (234; 234') is limited by at least one fixed stop (217.3; 217.3') on the headrest bearing element (219; 219').

[0271] 22. Functional fitting (210) according to one of aspects 20 to 21, CHARACTERIZED IN THAT the support element for the back support platform (232) is designed as a back support steering lever (216) which is articulated via a coupling joint (216.2) to the upper arm (213) of the erection frame (212) and via a coupling joint (216.1) to a back support bearing element (218) to be fixedly attached to the back support platform (232).

[0272] 23. Functional fitting (10) according to aspect 22, CHARACTERIZED IN THAT the pivoting angle of the handlebar lever (216) for the back support platform (232) is limited by at least one fixed stop (216.4) of the handlebar lever (216) supported on the upper arm (213).

[0273] 24. Functional fitting (210) according to aspect 23, CHARACTERIZED IN THAT the fixed stop (216.4) is formed by a notch of the steering lever (216).

[0274] 25. Head and back support unit (230) for a bed frame (200) of a platform bed with a frame (250), with at least: one functional fitting (210) according to one of aspects 22 to 24, a back support platform (232) to be connected to the frame (250) in an articulated manner via a back support joint (240), to which back support platform a back support bearing element (218) for the back support steering lever (216) is attached, and a head support platform (234) which is articulated to the back support platform (232) via a head support joint (233), to which head support bearing element (219) for the head support steering lever (217) is attached.

[0275] 26. Head and backrest unit (30) according to aspect 25, CHARACTERIZED IN THAT the headrest platform (234) has at least two parallel headrest side frame elements (235) and a headrest support beam (236) connecting them and to which the headrest bearing elements (219) for the headrest steering levers (217) are attached, THAT the backrest platform (232) has at least two parallel backrest side frame elements (237) and a backrest support beam (238) connecting them and THAT the backrest bearing elements (218) for the backrest steering levers

[0276] (216) are attached to the back support beam (238) of the headrest platform (234).

[0277] 27. Head and backrest unit (30) according to one of aspects 25 or 26, CHARACTERIZED IN THAT the headrest steering lever (217) is longer than the backrest steering lever (216) and THAT in the lowered rest position of the upright frame (212), the distance xS measured in the longitudinal direction between the coupling joints (216.1, 217.1) on the headrest platform (234) and on the backrest platform (232) is smaller than the distance xA between the coupling joints (216.2, 217.2) on the

[0278] Upper arms (213) of the erection frame (212).

[0279] 28. A platform bed comprising a bed frame (200) with a rectangular frame (250) comprising two parallel frame side parts (251, 252) and head and foot frame parts (253, 254) connecting them, and with a head and back support unit (230) according to one of aspects 25 or 26.

[0280] 29. Platform bed according to aspect 18, characterized in that the frame (250) comprises at least one central platform (255) extending in a lying plane (L) between the frame side parts (252, 254).

[0281] 30. Platform bed according to aspect 28 or 29, characterized in that the backrest platform (232) is connected to the central platform (255) via a backrest joint (231). 31. Platform bed according to one of aspects 28 to 30, characterized in that the frame (50) has at least one cross member (258) extending between the frame side parts (251, 252), and the backrest platform (232) is connected to the cross member (258) via a backrest joint (240).

[0282] 32. Head and back support unit (230') for a framed slatted frame (200') with a frame (250'), with at least: a functional fitting (210') according to one of aspects 16 to 21, a back support platform (232') to be connected to the frame (250') via a back support joint (240') and a back support platform (232') which is articulated to the back support platform (232') via a head support joint (233').

[0283] Headrest platform (234') comprising two parallel spaced headrest side frame elements (235'), to each of which a headrest steering lever (217') is articulated via a headrest bearing element (219').

[0284] 33. Framed slatted frame (200' ) with a rectangular frame (250' ) comprising two parallel frame side parts (251' , 252' ) and connecting head and foot frame parts

[0285] (253' , 254' ) and with a head and back

[0286] Support unit (30) according to aspect 32.

[0287] 34. Framed slatted frame (200') according to aspect 33, characterized in that the frame (250') has a

[0288] Lying level (L) comprises a central platform (255') extending between the frame side parts (251', 252').

[0289] Motorized functional fitting for a bed frame of a box spring bed or a platform bed or for a framed slatted frame

[0290] List of reference symbols

[0291] 100 bed frame

[0292] 10; 10' functional fitting

[0293] 11 longitudinal members

[0294] 11.1 Angle profile

[0295] 11.2 Mounting bracket

[0296] 12; 12' erection section

[0297] 13; 13' arms

[0298] 14; 14' traverse

[0299] 15 Erecting frame base joint

[0300] 16 backrest steering levers

[0301] 16.1, 16.2 Coupling joints

[0302] 16.4 Fixed stop

[0303] 17 Headrest steering lever

[0304] 17.1, 17.2 Coupling joints

[0305] 18 Back support bearing element

[0306] 19 Headrest bearing element

[0307] 20' roll

[0308] 21 Linear drive

[0309] 22 engine base camp

[0310] 23 Engine crosshead bearing 24 Lift tube

[0311] 30; 30' head and backrest unit

[0312] 31 Backrest joint

[0313] 32 back support

[0314] 33 Headrest joint

[0315] 34 Headrest

[0316] 50 bed frames

[0317] 52 head frame part

[0318] 51 Side frame part

[0319] 53 Foot frame part

[0320] 54 Side frame part

[0321] 55 Middle plate

[0322] 60 Foot and leg support unit

[0323] 61 Leg support base joint

[0324] 62 Thigh support

[0325] 63 Foot and lower leg support joint

[0326] 64 Foot and lower leg support

[0327] 65 joint

[0328] 70 functional fittings

[0329] 71 longitudinal members

[0330] 72 erection parts

[0331] 74 Traverse

[0332] 75 Linear actuator

[0333] 200, 200' bed frame

[0334] 210, 210' functional fitting

[0335] 211; 211' longitudinal beam

[0336] 211.1; 211.1' angle profile

[0337] 212; 212' erection section

[0338] 213 upper arms

[0339] 214; 214' Traverse

[0340] 215; 215' erecting base joint

[0341] 216; 216' Backrest steering lever 216.1, 216.2, 216.1', 216.2' Coupling joints

[0342] 216.4 Fixed stop

[0343] 217; 217' Headrest steering lever

[0344] 217.1, 217.2, 217.1', 127.2' coupling joints

[0345] 218; 218' backrest bearing element

[0346] 219; 219' Headrest bearing element

[0347] 221; 221' Linear actuator

[0348] 222; 222' Engine Base Camp

[0349] 223; 223' engine cross member bearing

[0350] 224; 224' lifting tube

[0351] 230; 230' head and backrest unit

[0352] 231; 231' slatted frame side frame

[0353] 232; 232' back support platform

[0354] 233; 233' headrest joint

[0355] 234; 234' headrest platform

[0356] 235; 235' Headrest side frame elements

[0357] 236 Headrest support

[0358] 237; 237' Backrest side frame elements

[0359] 238 Back support beam

[0360] 240; 240' backrest joint

[0361] 241 front joint axle

[0362] 242 rear joint axle

[0363] 243 front articulated lever

[0364] 244 rear articulated lever

[0365] 250 bed frames

[0366] 250' slatted frame

[0367] 251, 252; 251', 252' side frame parts

[0368] 253; 253' head frame part

[0369] 254; 254' foot frame part

[0370] 255; 255' center platform

[0371] 257, 258; 257', 258' Cross member 260; 260' Foot and leg rest unit

[0372] 261; 261' leg support base joint

[0373] 262; 262' thigh support platform

[0374] 263; 263' Foot and lower leg support joint

[0375] 264; 264'' Foot and lower leg support platform

[0376] 270; 270' functional fitting

[0377] 271; 271' Longitudinal beam 272; 272' Erecting section

[0378] 273; 273' Engine Base Camp

[0379] 274; 274' Traverse

[0380] 275; 275' linear actuator

[0381] 276, 276' Erecting base joint 277, 277' Coupling joint

[0382] 278, 278' engine cross member bearing

[0383] 279; 279' Footrest bearing element

Claims

Motorized functional fitting for a bed frame of a box spring bed or a platform bed or for a framed slatted base Claims 1. Motorized functional fitting (10;10';210;210') for a bed frame (100;200;200') of a box spring bed, or of a platform bed or for a framed slatted frame, which bed frame (100; 100';200) comprises a bed frame (50;250;250') with at least one central panel (55), a back support (32) articulated thereto, and a head support (34) articulated to the back support (32), or which bed frame (200) or which slatted frame (200') comprises at least one frame and a back support platform (232; 232') articulated thereto, which is connected to a head support platform (234;234'), with at least: an erection frame (12; 12';212;212') which at least- tens two over at least one traverse (14; 14';214;214 ') interconnected arms comprise a linear drive (21;221;221') with a lifting tube (24 ; 224 ; 224 ' ) , which with one end on the erection frame (12; 12' ) is hinged and can be supported at another end on a fixed point of the bed frame (100; 200; 200' ) or the frame ( 50 , 50 ' 250 ; 250 ' ); wherein the functional fitting (10; 10 ' ; 210 ; 210 ' ) comprises a longitudinal beam ( 11 ; 211 ; 211 ' ) to be arranged on a bed frame center axis and connectable to the bed frame (50) or the frame (250, 250' ), to which the erection frame (12; 12 ' : 212 ; 212 ' ) is hinged; wherein the erection frame (12; 12'; 212; 212') is fork-shaped and has at least one lower arm which is hinged to the longitudinal beam (11, 11') at an erection frame base joint (15; 215; 215'); wherein the erection frame (12; 12'; 212; 212') comprises two upper arms (13; 13'; 213) which are spaced apart from each other and from the longitudinal beam (11: 211: 211') arranged between them; wherein the crossbeam (14; 14'; 214; 214') is located above the longitudinal beam ( 11 ; 211 ; 211 ' ) and transversely between the forearms and / or the upper arms (13; 13' ; 213 ; 213 ' ) and connects them together, wherein the linear drive ( 21 ; 221 ; 221 ' ) is attached to the longitudinal beam ( 11 ; 211 ; 211 ' ) and on the erection frame (12; 12 ' ; 212 ; 212 ' ) is hinged and is arranged between the longitudinal beam ( 11; 211; 211 ' ) and one of the upper arms ( 13 ; 213 ; 213 ' ) of the erection frame (12; 12 ' ; 212 ; 212 ' ) when the erection frame (12; 12 ' ; 212 ; 212 ' ) is lowered, characterized in that two headrest bearing elements are provided for the headrest (32) or the headrest platform (232;232'). (19; 19'; 219; 219') are provided that the erecting frame (12; 12'; 212; 212'') is each connected via at least one headrest steering lever (17; 217; 217'') to a surface connected with the headrest (34) or the headrest platform (234 ; 234 ' ) to connecting headrest bearing element ( 19 ; 219 ; 219 " ) is articulated and the erecting assembly (12 ; 12 ' ; 212 ; 212 ' ) has at least one support element for supporting the back support (32) or the back support platform (232; 232' ) when standing up.

2. Functional fitting ( 10 ; 10 ' ; 210 ; 210 ' ) according to claim 1, characterized in that the back support (32) or the back support platform (232; 232' ) is articulated to the head support platform (234; 234' ) or to the head support via a head support joint (33; 33' ; 232 ; 232 ' ). (32) is connected such that the arms of the erecting frame (12; 12 ' : 212 ; 212 ' ) are each connected via a coupling joint (17.2; 17.2 ' ; 217.2 ; 217.2 ' ) are connected to a headrest steering lever (17; 17 ' ; 217 ; 217 ' ), each of which is connected via a further coupling joint (17.1; 17.1' ; 217.1; 217.1 ' ) to a headrest bearing element (19; 19' ;219;219' ).

3. Functional fitting ( 10 ; 10 ' ; 210 ; 210 ' ) according to one of the attachments Sayings 1 or 2, characterized in that the pivot angle of the handlebar lever (17) is controlled by at least one fixed stop ( 16.4 ; 216.4 ) ) on an upper arm (13; 13' ; 213; 213 ' ) is limited.

4. Functional fitting (10; ;10';210;210') according to one of claims 1 to 3, characterized in that the pivot angle of the steering lever (17) for the headrest (34) or the headrest platform (34;34') is limited by at least one fixed stop (16.4;216.4) on the headrest bearing element (19;19').

5. Functional fitting (10;10';10';210;210') according to one of claims 1 to 4, characterized in that the support element for the backrest (32) or the backrest platform (232) is a backrest steering lever. (16;216;216') is formed, which is connected to an upper arm via a coupling joint (16.2;216.2;215.2'). (13;13';213:213') of the erecting frame (12;12;212;212') and is articulated via a coupling joint (16.1;216.1;216.1') to a back support bearing element (18;18';218;218') which is fixedly attached to the back support (32) or the back support platform (232).

6. Functional fitting (10;10';10';210;210') according to claim 5, characterized in that the pivot angle of the handlebar lever (16;16';216;216') for the back support (32) or the back support platform (232;232') is determined by at least one element located on an upper arm (13;13';213;213') supporting fixed stop (16.4) of the handlebar lever (16,16';216;216') is limited.

7. Functional fitting (10;10';10';210;210') according to claim 6, characterized in that the fixed stop (16.4;216.4;216.4') is formed by a disengagement of the handlebar lever (16;216;216')) 8. Functional fitting (10) for a bed frame of a box spring bed according to one of claims 1 to 4, wherein characterized in that the support element for the back support (32) is formed by at least one roller (20' ) which extends at least partially above the erection frame (12' ).

9. Functional fitting (10' ) according to claim 8, characterized in that a pair of rollers (20' ) is arranged on each upper arm (13' ).

10. Head and back support unit (30; 230; 230') for a Bed frame (100) of a box spring bed, which bed frame (100) comprises a bed frame (50) with at least one center panel (55) or for a platform bed with a bed frame (250) , with at least: a functional fitting (10; 210) according to one of claims 1 to 7, a back support (32) or back support platform (232; 232') to be connected articulated to the center panel (55) or to the bed frame (250) via a back support joint (240) articulated to the bed frame (250), to which the back support bearing element (18; 218; 218') is attached, and a head support (34) or head support platform articulated to the back support (32) or the back support platform (232; 232'). (234;234 ' ) , to which the headrest bearing element (19 ; 219 ; 219 ' ) is attached.

11. Head and back support unit (30; 230; 230'') according to claim 10, characterized in that the head support steering lever (17; 217; 217'') is longer than the back support steering lever (16; 216; 216'') and that in the lowered resting state of the erection frame ( 12 ; 212 ; 212 ' ) the longitudinally measured distance xS between the coupling joints (16.1, 17.1;216.1;216.1';217.1;217.1') on the headrest (34) and on the backrest (32) or the headrest platform (234;234') is smaller than the distance xA between the coupling joints (16.2, 17.2 ; 216.2 ; 216.2 ' ; 217.2 ; 217.2 ' ) on the upper arms (13; 13 ' ; 213 ; 213 ' ) of the erection frame ( 12 ; 212 ; 212 ' ) .

12. Head and back support unit (30') for a bed frame (100') of a box spring bed, the bed frame (100') comprising a bed frame (50) with at least one center panel (55), with at least: a functional fitting (10') according to one of the claims 7 or 8 ; a back support (32) to be articulated to the central plate (55) , and a head support articulated to the back support (32) (34) , to which the headrest bearing element (19) is attached, wherein the at least one roller (20' ) in the lowered rest position of the erecting frame (12' ) has no contact with the rear of the back support (32) and in an intermediate position, in which the headrest is inclined by at least 15° with respect to a lying plane (L) formed by an upper edge of the central plate (55), rests against the rear of the back support (32).

13. Head and back support unit (30; 30 ' ; 230 ; 230 ' ) according to one of claims 10 to 12, characterized in that the back support joint (31) and the head support joint (33) are each formed by at least two spaced-apart hinges with a common pivot axis.

14. Box spring bed comprising a bed frame (100; 100') with a rectangular bed frame (50) comprising two parallel frame side parts (51, 52), head and foot frame parts (51, 53) connecting these, and at least one central panel (55) extending in a lying plane (L) between the frame side parts (52, 54); and with a head and back support unit (30; 30') according to one of claims 9 to 13, wherein the back support (32) is connected to the central panel (55) via a back support joint (31).

15. Platform bed comprising a bed frame (200) with a rectangular frame (250) comprising two parallel frame side parts (251, 252) and connecting head and foot frame parts (253, 254), and with a head and back support unit (30; 30'; 230) according to one of claims 9 or 10.

16. Platform bed according to claim 15, characterized in that the frame (250) comprises at least one central platform (255) extending in a lying plane (L) between the frame side parts (252, 254).

17. Platform bed according to one of claims 15 or 16, characterized in that the back support platform (232) is connected to the middle platform (255) via a back support joint (231).

18. Platform bed according to one of claims 15 to 17, characterized in that the frame (250) 19. Framed slatted frame (200') with a rectangular frame (250') comprising two parallel frame side parts (251', 252') and connecting head and foot frame parts (253', 254') thereto, and with a head and back support unit (30; 230) according to claim 9.

20. Framed slatted frame (200') according to claim 19, characterized in that the frame (250') comprises a central platform (255') extending in a lying plane (L) between the frame side parts (251', 252').

Images