ELECTRICALLY MOTORISED ADJUSTABLE SUPPORT DEVICE

Abstract

The electrically motorised adjustable support device for supporting a cushion of a sitting and/or lying furniture, in particular a mattress of a bed, comprises a first support part and a second support part for supporting the cushion, wherein the support parts are pivotably adjustable relative to each other. An electrically motorised drive device for adjusting the support parts relative to each other comprises at least one electric motor and at least one driven member movable translationally along a driven axis with at least one mechanical coupling element for adjust-technical coupling of the or each driven member to a support part to be adjusted. According to the invention, at least one pusher is arranged movably along a translation axis at or in the first support part, wherein the pusher is operatively connected to the electrically motorised drive device on the one hand and to the second support part on the other hand, such that the support parts are adjusted relative to each other during a translational movement of the pusher, wherein the driven axis and the translation axis are arranged angularly to each other, in particular at an angle of 90° or approximately 90°.

Description

The invention relates to an electrically motorised adjustable support device for supporting a cushion of a sitting and/or lying furniture, in particular a mattress of a bed.

The support devices of this type, for example in the form of slatted frames, are generally known, for example from EP 1 239 754 B1 and EP 2 418 984 B1. They comprise a first support part and a second support part for supporting the cushion, wherein the support parts are pivotably adjustable relative to each other. The known support devices further comprise an electrically motorised drive device for adjusting the support parts relative to each other, which comprises at least one electric motor and at least one driven member, which is translationally movable along a driven axis with at least one mechanical coupling element for adjust-technical coupling of the or each driven member to a support part to be adjusted.

DE 10 2021 120 007 A1 discloses a support device consisting of a base part and a support part, which is arranged to be inserted between a mattress and a substructure of a bed in order to retrofit a bed with electrically motorised adjustment functionality. The support device can, for example, be arranged between a slatted frame and a mattress of the bed.

The invention is based on the object of providing a support device for a cushion of a sitting and/or lying furniture, in particular a mattress of a bed, which is improved over the known support devices.

This object is solved by the invention specified in claim 1.

The invention provides that at least one pusher is arranged movably along a translation axis at or in the first support part, wherein the pusher is operatively connected to the electrically motorised drive device on the one hand and to the second support part on the other hand, such that, during a translational movement of the pusher, the support parts are pivotally adjusted relative to each other, and that the driven axis and the translation axis are arranged angularly to each other, in particular at an angle of 90° or approximately 90°.

According to the invention, for example and in particular in two hollow longitudinal members of the first support part, which are spaced apart from each other transversely to the longitudinal direction of the support device, a pusher can be accommodated respectively. The angularly spaced arrangement of the driven axis and the translation axis according to the invention, in particular at an angle of 90° or approximately 90°, offers the possibility of arranging the electrically motorised drive device in a hollow transverse member of the first support part, so that all components required for adjusting the support parts relative to each other can be accommodated in the first support part.

This results in a compact and at the same time aesthetically pleasing structure, because no components of the electrically motorised drive device are exposed.

The angularly arranged axes according to the invention also offer the possibility of providing the adjustment of the support parts by means of a single electric motor, wherein the direction of force flow of the adjustment force is deflected and transmitted to the pushers. This results in a particularly simple, cost-effective and robust structure with relatively few components.

The support device according to the invention has a particular advantage in that it comprises a low overall height and is therefore particularly suitable for being arranged between a mattress and a substructure of a bed in order to retrofit a bed with electrically motorised adjustment functionality.

The structure of the support parts is selectable within wide limits according to the respective requirements and circumstances. An advantageous further development of the invention provides in this respect that the first support part comprises two longitudinal members spaced apart from each other transversely to the longitudinal direction of the support device. A corresponding structure with two longitudinal members is preferred, wherein the first support part can in principle also comprise only a single longitudinal member or more than two longitudinal members.

An advantageous further development of the aforementioned embodiment provides that a pusher movable along a related translation axis is arranged respectively in or at the two longitudinal members, wherein each pusher is operatively connected to the or a driven member of the electrically motorised drive device on the one hand and to the second support part on the other hand for adjusting the support parts relative to each other. In this embodiment, a pusher is guided in or at each longitudinal member, so that the adjusting force for adjusting the support parts relative to each other is introduced into the first support part symmetrically to the longitudinal centre plane of the support device. In this way, torsions of the support parts during the adjustment are avoided.

An extraordinarily advantageous further development of the invention provides that at least one longitudinal member is at least sectionally hollow and defines a cavity, in which the related pusher is accommodated and guided movably along the related translation axis. Due to the accommodation of the pusher or the pushers in the longitudinal member or the longitudinal members, the pushers are not exposed, so that a contact with moving parts in the support device by a user is avoided in this respect.

An advantageous further development of the aforementioned embodiment provides that the pushers are operatively connected to a common driven member of the electrically motorised drive device, such that, when the driven member is moved along the driven axis, the pushers are moved in the same direction along the respective related translation axis. This results in a particularly simple structure with relatively few components.

However, if desired or necessary according to the respective requirements and conditions, the electrically motorised drive device can also comprise two or more driven members. An advantageous further development of the invention provides in this respect that the electrically motorised drive device comprises two driven members, each of which is operatively connected to one of the pushers, such that, when the driven members are moved along the driven axis, the pushers are moved in the same direction along the respective related translation axis.

A transmission is expediently arranged between at least one driven member of the electrically motorised drive device and at least one pusher. A corresponding design of the transmission makes it possible to adjust the adjustment force to be applied when adjusting the support parts relative to each other to the respective conditions.

In the embodiment comprised above, the transmission can be formed in different ways. An advantageous further development of the invention provides in this respect that the transmission is formed as lever transmission. Corresponding lever transmissions are simple and robust in structure and allow an adjustment of the adjustment force within wide limits when designing the support device with a relatively little design effort.

In order to achieve a particularly simple structure in the aforementioned embodiment and at the same time to enable a redirecting of the adjustment from the driven member or driven members in the electrically motorised drive device into the pusher, an advantageous further development of the invention provides that the lever transmission comprises a two-armed first lever arranged at a rotation point about a rotation axis,

• • the first lever arm of which is hinge-rotatably connected to one end of a second lever, the other end of which is operatively connected to the related coupling element, in particular hinge-rotatably connected to the related coupling element, and
  • its second lever arm cooperates with the related pusher for adjusting the support parts relative to each other.

The operative connection between the first lever and the pusher can be established in different ways depending on the respective requirements and conditions. In the sense of a simple structure, an advantageous further development of the invention provides in this respect that the lever transmission comprises a third lever, one end of which is hinge-rotatably connected to its second lever arm of the first lever and the other end of which is hinge-rotatably connected to the pusher.

In order to keep the overall height of the support device particularly low, an advantageous further development of the aforementioned embodiment provides that the rotation axis of the first lever is arranged perpendicularly or approximately perpendicularly to a plane spanned by the driven axis and the translation axis.

The electrically motorised drive device can be formed in different ways according to the respective requirements and conditions. An advantageous further development of the invention provides in this respect that the electrically motorised drive device comprises a spindle drive with a threaded spindle and a spindle nut arranged on the threaded spindle. Corresponding spindle drives are available as relatively simple and inexpensive standard assemblies and are robust.

An advantageous further development of the aforementioned embodiment provides, that the spindle nut is or can be brought into rotation drive connection with an electric motor of the electrically motorised drive device, wherein the threaded spindle is twist-proof and movable in its axial direction and forms the driven member of the electrically motorised drive device. In this embodiment, the threaded spindle can support a coupling element at two points spaced apart from each other in its axial direction for adjust-technical coupling of the threaded spindle to two pushers.

Another advantageous further development of the invention provides that the first support member comprises at least one transverse member, which is formed to be at least sectionally hollow and defines a cavity, in which the electrically motorised drive device, including the electric motor, is accommodated. In this way, the electrically motorised drive device is accommodated in the transverse member, so that no components of the drive device are exposed.

According to another advantageous further development of the invention, the support parts are connected to each other, such that in a starting position of the adjustment movement they span a substantially horizontal support plane and in an end position of the adjustment movement, they are arranged angularly to each other.

The force transmission during the adjustment of the support parts relative to each other can be performed in different ways depending on the respective requirements and conditions. An advantageous further development of the invention provides in this respect that the end of each pusher facing the second support part cooperates with a contact surface of a cam body, which is fixed to or formed on the second support part, wherein the contact surface is formed, such that the support parts are pivotally adjusted relative to each other during a translational movement of the pusher. The shape of the contact surface defines the kinematics of the adjustment movement.

The number of the support parts of the support device can be selected within wide limits according to the respective requirements and conditions. An advantageous further development of the invention provides in this respect that the support device is formed in two parts in relation to the support parts and consists of the first support part and the second support part. This embodiment is particularly preferred if the support device is arranged to be arranged between a substructure and a mattress of a bed in order to provide electrically motorised adjustment functionality.

A furniture according to the invention is disclosed in claim 18 and comprises a support device according to the invention.

Claim 19 discloses a bed according to the invention comprising a substructure and a cushion device, in particular a mattress, laid on the substructure and characterised in that a support device according to the invention is arranged between the substructure and the cushion device.

The invention is explained in more detail below with reference to the attached, highly schematised drawing with reference to an embodiment. It is apparent to the skilled person that the individual features of an embodiment further form the embodiment in each case in isolation, i.e. independently of the other features. It is thus also apparent to the skilled person that all the features described, shown in the drawing and claimed in the claims form the subject matter of the invention in themselves and in any technically meaningful combination with one another, irrespective of their summarisation in the claims and their dependencies and irrespective of their specific description or representation in the drawing. The subject matter and disclosure of the present application also include sub-combinations of the claims, in which at least one feature of a claim is omitted or replaced by another feature.

It shows in:

FIG. 1 in a schematic perspective view of an embodiment of a support device according to the invention in a starting position of the adjustment movement, in which a first support part and a second support part span a substantially horizontal support plane,

FIG. 2 in the same representation as FIG. 1 the support device according to FIG. 1, wherein components of the first support part are omitted to illustrate the structure of an electrically motorised drive device of the support device,

FIG. 2A in the same representation as FIG. 2, showing a detail from FIG. 2,

FIG. 3 the support device according to FIG. 2 in the same way as FIG. 2, wherein further components of the first support part are omitted,

FIG. 4 a detail from FIG. 3 in the area of a pusher,

FIG. 5 in a side view of a detail from FIG. 4 to illustrate the interaction of the pusher with a contact surface of a cam body formed on the second support part,

FIG. 6 in the same representation as FIG. 1, the support device according to FIG. 1 in an end position of the adjustment movement, in which the support parts are maximally pivotally adjusted relative to each other,

FIG. 7 a detail from FIG. 6 in the area of the electrically motorised drive device, wherein components of the first support part are omitted,

FIG. 8 in the same representation as FIG. 6 the support device according to FIG. 6, wherein components of the first support part are omitted, and

FIG. 9 in a similar representation to FIG. 5, the detail according to FIG. 5 in the end position of the adjustment movement.

An embodiment of a support device according to the invention is explained in more detail below with reference to FIG. 1 to FIG. 9. For reasons of illustration and to simplify the representation, components have been omitted from individual figures of the drawing. The omitted components are to be supplemented in the relevant figures accordingly.

FIG. 1 shows an embodiment of an electrically motorised adjustable support device 2 according to the invention for supporting a cushion of a sitting and/or lying furniture, in particular a mattress of a bed, which comprises a first support part 4 and a second support part 6 for supporting the cushion. The support parts 4, 6 are pivotably adjustable relative to each other about a horizontal rotation axis 8 (see FIG. 2).

From a comparison of FIG. 1, in which the starting position of the adjustment movement is shown, with FIG. 5, in which the end position of the adjustment movement is shown, it can be seen that the support parts 4, 6 are connected to each other, such that in the starting position of the adjustment movement they span a substantially horizontal support plane with each other and in the end position of the adjustment movement they are arranged angularly with respect to each other.

The support device 2 further comprises an electrically motorised drive device 10 for adjusting the support parts 4, 6 relative to each other, which comprises a single electric motor 12 in the illustrated embodiment.

In the illustrated embodiment, the electrically motorised drive device comprises a spindle drive 16 with a stationary spindle nut 18, which is in rotation drive connection with the output shaft of the electric motor. For this purpose, the output shaft of the electric motor 12 is formed as a worm, which engages with a worm gear formed at the radial outer surface of the spindle nut 18 (see in particular FIG. 2 and FIG. 3).

The spindle nut 18 is arranged on a threaded spindle 20 (see FIG. 3), which is twist-proof and can move in its axial direction and forms the driven member of the electrically motorised drive device 10. The driven axis is thus defined by the axial direction of the threaded spindle 20 and runs perpendicular to the longitudinal direction of the support device 2. The driven axis is symbolised in FIG. 3 by a dotted line 21.

The threaded spindle 20 supports axially spaced coupling elements 22, 24 (see in particular FIG. 3) for the adjust-technical coupling of the driven member of the electrically motorised drive device 10, i.e. in the illustrated embodiment of the threaded spindle 20, to a support part to be adjusted. This adjust-technical coupling is explained in more detail below with reference to FIG. 3 to FIG. 5. In the illustrated embodiment, the coupling elements 22, 24 are formed by plastic blocks, which are connected to the threaded spindle 20, so that they can be subjected to tension and compression.

Power supply and control means for supplying power to and controlling the electrically motorised drive device 10 are not shown in order to simplify the illustration. However, the structure of corresponding voltage supply and control means is generally known to the skilled person and is therefore not explained in more detail here.

According to the invention, at least one pusher 26 is arranged movably along a translation axis at or in the first support part 4, wherein the translation axis extends in the longitudinal direction of the support device 2 and is symbolised in FIG. 3 by a dash-dotted line 27. The pusher 26 is operatively connected to the electrically motorised drive device 10 on the one hand and to the second support part 6 on the other hand, such that the support parts 4, 6 are adjusted relative to each other during a translational movement of the pusher 26. This is explained in more detail below with reference to FIG. 3 to FIG. 5.

According to the invention, the driven axis 21 and the translation axis 27 are arranged angularly to each other, namely at an angle of 90° or approximately 90° in the illustrated embodiment.

In the illustrated embodiment, the first support member 4 comprises two longitudinal members 28, 30 spaced apart from each other transversely to the translation axis 7, i.e. transversely to the longitudinal direction of the support device 2. The longitudinal members 28, 30 are connected to each other at their end facing away from the second support part 6 by a transverse member 32. Further plate-like transverse members 34 are arranged between the transverse member 32 and the end of the first support member 4 facing the second support member 6, which extend between the longitudinal members 28, 30 and of which only one further transverse member is provided with the reference sign 34 in the drawing (see FIG. 1).

Alternatively, the support device 2 can also be formed exclusively with a single longitudinal member. In contrast, the illustrated embodiment with two (or possibly more) longitudinal members has the advantage that it is more stable and torsions of the support members 4, 6 during adjustment are avoided.

The longitudinal member 28 comprises a longitudinal member 36 in the form of a metal rail (see FIG. 2), which is provided with a covering 38. The longitudinal member 30 is correspondingly structured and is therefore not explained in more detail here. The covering 38 forms a cavity, in which the pusher 26 is guided movably along the translation axis 27.

Like the transverse member 32 and the other transverse members 34, the covering 38 can be formed by injection-moulded plastic parts. In the illustrated embodiment, the transverse member 32 consists of plastic half-shells 40, 42, which form a drive housing 44 for the electrically motorised drive device 10 (see FIG. 2 and FIG. 3). In FIG. 2, the upper half-shell 40 is omitted for reasons of visualisation.

Apart from the transverse member 32, the basic structure of the second support part 6 corresponds to that of the first support part 4 and is therefore not explained in more detail.

In the illustrated embodiment, in addition to the pusher 26, a further pusher 46 is arranged, which is movably guided in a corresponding manner to the pusher 26 in a covering 48 of the longitudinal member 30. The pushers 26, 46 are connected on the one hand to the threaded spindle 20 as driven member of the electrically motorised drive device 10 and on the other hand with the second support part 6 operatively connected to adjust the support parts 4, 6 relative to each other. This is explained in more detail below.

As a result, the longitudinal members 28, 30 are sectionally hollow in the illustrated embodiment and define a cavity, in which the related pusher 26, 46 is received and guided movably along the related translation axis.

The pushers 26, 46 are operatively connected to the threaded spindle 20 as driven member of the electrically motorised drive device 10 in a manner explained in more detail below, such that, when the threaded spindle 20 moves along the driven axis 21, the pushers 26, 46 are moved in the same direction along the respective related translation axis.

In the drive train between the electric motor 12 and the pusher 26, a transmission is arranged in the illustrated embodiment, which is formed as a lever transmission 50 in the illustrated embodiment.

The structure of the lever transmission 50 is explained in more detail below with reference to FIG. 2A.

The lever transmission 50 comprises a two-armed first lever 54 arranged at a rotation point about a rotation axis 52,

• • whose first lever arm 56 is hinge-rotatably connected to one end of a second lever 58, the other end of which is hinge-rotatably connected to the related coupling element 22 in the illustrated embodiment, and
  • its second lever arm 60 cooperates with the pusher 26 for adjusting the support parts 4, 6 relative to each other.

The operative connection between the first lever and the related coupling element 22 can also be formed in another way instead of a hinge-rotatably connection.

In the illustrated embodiment, the first lever 54 is formed by an injection-moulded part made of plastic.

In the illustrated embodiment, the lever transmission 50 comprises a third lever 62, one end of which is hinge-rotatably connected to the second lever arm 56 of the first lever 54 and the other end of which is hinge-rotatably connected to the end of the pusher 26 facing away from the second support part 6. In the illustrated embodiment, the third lever 62 is formed by a sheet angle.

The adjust-technical coupling of the pusher 56 to the coupling element 24 is performed in a corresponding manner via a further lever transmission 64 (see in particular FIG. 3), the first lever of which is designated by the reference sign 66.

FIG. 5 illustrates the adjust-technical coupling of the pusher 26 to the second support part 6. The end of the pusher 26 facing the second support part interacts with a contact surface of a cam body 70, which is formed at the second support part 6 in the illustrated embodiment, wherein the contact surface 68 is formed, such that the support parts 4, 6 are pivotally adjusted relative to each other during a translational movement of the pusher 26. The position of the force application point of the pusher 24 on the contact surface 68 is selected relative to the rotation axis 8, such that the pusher 24 is not in a dead point in the starting position of the adjustment movement shown in FIG. 5. It can be seen that the pusher 26 loosely acts on the contact surface 68.

The adjust-technical coupling of the pusher 46 to the second support part 6 is performed in a corresponding manner and is therefore not explained in more detail:

The support device 2 according to the invention functions as follows:

Starting from the starting position of the adjustment movement shown in FIG. 1, the electric motor 10 drives the spindle nut 18, such that the threaded spindle 20 in FIG. 2 moves from bottom to top. Here, the first lever 54 (see FIG. 2A) is pivoted clockwise about the rotation axis 52 in FIG. 2A, so that the third lever 62 is pressed in the direction of the second support part 6 and accordingly the pusher 26 presses with its free end against the contact surface 68.

During a further movement of the threaded spindle 20, the free end of the pusher 26 slides along the contact surface 68, such that, due to the curved shape of the cross-section of the contact surface 68, the first support part 4 is pivoted relative to the second support part 6 about the rotation axis 8, until the end position of the adjustment movement shown in FIG. 6 is reached.

The same applies to the pusher 46.

Due to the hinge-rotatably connection of the third lever 62 at both ends to the first lever 54 on the one hand and the pusher 46 on the other hand, the third lever 62 would perform a slight angular movement during the adjustment movement.

Via the hinge-rotatably connection of the second lever 58 to the coupling element and of the third lever 62 to the second lever 58 on the one hand and to the pusher 26 on the other hand, a force transmission connection that can be subjected to tension and compression is established between the components concerned. Instead of a hinge-rotatable connection, other force transmission connections between the components that can be subjected to tension and compression are also possible.

The retraction from the end position shown in FIG. 6 to the starting position shown in FIG. 1 is performed with the drive device 10 switched on, but under the weight force of the first support part 4 or the weight force of a person resting on the support device 2.

The invention provides a support device 2, which is constructed simply and is suitable for applying large adjustment forces.

A particular advantage of the support device 2 according to the invention is that all movable components required for the realisation of an electrically motorised adjustment function are integrated into the support device 2, in that its members 28, 30 and 32 are formed to be hollow sectionally and accommodate the pushers 26, 46 or the components of the electrically motorised drive device 10 together with transmissions 50, 66 and electric motor 12. This ensures a “tidy” aesthetic appearance of the support device 2 and prevents a user of the support device 2 from injuring himself on moving components. The support device 2 also comprises a low overall height.

The support device 2 according to the invention can be formed in three or more parts in relation to the support parts, depending on the respective requirements and conditions. In the illustrated embodiment, the support device 2 is formed in two parts in relation to the support parts and in this respect consists exclusively of the first support part 4 and the second support part 6.

A corresponding embodiment is particularly suitable for retrofitting beds with an electrically motorised adjustment function. The support device 2 is inserted or embedded between a mattress and a substructure of a bed, for example a slatted frame, in particular in the portion of the head end of the bed. By adjusting the support parts 4, 6 relative to each other, an electrically motorised adjustment function can thus be implemented by simple means and without mechanical intervention in the substructure of the bed, by means of which the mattress can be raised, for example in the area of the head end, in order to transfer the bed from a lying position to a sitting position. The support device 2 can also be positioned in the portion of the foot end of a bed in the same way if, for example, it is desirable for medical reasons to raise the legs of a person resting on the support device.

LIST OF REFERENCE SIGNS

• • 2 support device
  • 4 support part
  • 6 support part
  • 8 rotation axis
  • 10 electrically motorised drive device
  • 12 electrical motor
  • 16 spindle drive
  • 18 spindle nut
  • 20 threaded spindle
  • 21 driven axis
  • 22 coupling element
  • 24 coupling element
  • 26 pusher
  • 27 translation axis
  • 28 longitudinal member
  • 30 longitudinal member
  • 32 transverse member
  • 34 further transverse member
  • 36 longitudinal support
  • 38 covering
  • 40 half shell
  • 42 shell
  • 44 drive housing
  • 46 pusher
  • 48 covering
  • 50 lever transmission
  • 52 rotation axis
  • 54 first lever
  • 56 first lever arm
  • 58 second lever
  • 60 second lever arm
  • 62 third lever
  • 64 further lever transmission
  • 66 first lever of 64
  • 68 contact surface
  • 70 cam body

Claims

1. An electrically motorised adjustable support device for supporting a cushion of a sitting and/or lying furniture, in particular a mattress of a bed, comprising: a first support part and a second support part for supporting the cushion, wherein the support parts are pivotably adjustable relative to each other,an electrically motorised drive device for adjusting the support relative to each other, which comprises at least one electric motor and at least one driven member, which is translationally movable along a driven axis, with at least one mechanical coupling element for adjust-technical coupling of the or each driven member to a support part to be adjusted,at least one pusher is arranged movably along a translation axis at or in the first support part, wherein the pusher is operatively connected to the electrically motorised drive device on the one hand and to the second support part on the other hand, such that the support parts are adjusted relative to each other during a translational movement of the pusher, andthat the driven axis and the translation axis are arranged angularly to each other, in particular at an angle of 90° or approximately 90°.

2. The support device according to claim 1, wherein the first support part comprises two longitudinal members spaced apart from each other transversely to the translation axis.

3. The support device according to claim 2, wherein a pusher movable along a related translation axis is arranged in or at the two longitudinal members, respectively, wherein each pusher is operatively connected to the or a driven member of the electrically motorised drive device on the one hand and to the second support part on the other hand for adjusting the support parts relative to each other.

4. The support device according to claim 3, wherein at least one longitudinal member is hollow at least sectionally and defines a cavity, in which the related pusher is accommodated and guided movably along the related translation axis.

5. The support device according to claim 3, wherein the pushers are operatively connected to a common driven member of the electrically motorised drive device, such that, when the driven member moves along the driven axis, the pushers are moved in the same direction along the respective related translation axis.

6. The support device according to claim 3, wherein the electrically motorised drive device comprises two driven members, each of which is operatively connected to one of the pushers, such that, when the driven members are moved along the driven axis, the pushers are moved in the same direction along the respective related translation axis.

7. The support device according to claim 3, wherein a transmission is arranged between at least one driven member of the electrically motorised drive device and at least one pusher.

8. The support device according to claim 7, wherein the transmission is formed as a lever transmission.

9. The support device according to claim 8, wherein the lever transmission comprises a two-armed first lever arranged at a rotation point about a rotation axis, its first lever arm is hinge-rotatably connected to one end of a second lever and its other end is hinge-rotatably connected to a related coupling element, andits second lever arm cooperates with the related pusher for adjusting the support parts relative to each other.

10. The support device according to claim 9, wherein the lever transmission comprises a third lever, its one end is connected hinge-rotatably to the second lever arm of the first lever and its other end is connected hinge-rotatably to the pusher.

11. The support device according to claim 9, wherein the rotation axis of the first lever is arranged perpendicularly or approximately perpendicularly to the translation axis.

12. The support device according to claim 1, wherein the electrically motorised drive device comprises a spindle drive with a threaded spindle and a spindle nut arranged on the threaded spindle.

13. The support device according to claim 12, wherein the spindle nut is or can be brought into rotation drive connection with an electric motor of the electrically motorised drive device, wherein the threaded spindle is twist-proof and arranged movably in its axial direction and forms the driven member of the electrically motorised drive device.

14. The support device according to claim 1, wherein the first support part comprises at least one transverse member, which is at least sectionally hollow and defines a cavity, in which the electrically motorised drive device including electric motor is accommodated.

15. The support device according to claim 1, wherein the support parts are connected to each other, so that in an starting position of the adjustment movement they span a substantially horizontal support plane and in an end position of the adjustment movement they are arranged angularly to each other.

16. The support device according to claim 1, wherein the end of each pusher facing the second support part cooperates with a contact surface of a cam body, which is fixed or formed at the second support part, wherein the contact surface is formed, such that the support parts are pivotally adjusted relative to each other during a translational movement of the pusher.

17. The support device according to claim 1, wherein the support device is formed in two parts with respect to the support parts and consists of the first support part and the second support part.

18. A furniture, with a support device according to claim 1.

19. A bed, having a substructure and a cushion device, in particular a mattress, laid on the substructure, wherein a support device according to claim 1 is arranged between the substructure and the cushion device.