EP1463478B1 - Rotating bed with improved stability - Google Patents

Abstract

A rotating bed is provided that has a base with a mattress frame supported for rotation about a vertical axis. The mattress frame is divided into sections and can be converted into a chair-like configuration in one rotational position. In order to increase the stability of the arrangement in the chair position, at least one support leg is provided that either contacts the floor from the beginning or only makes contact with the floor when the stability limit without the support leg is exceeded.

Description

The known from the prior art rotary beds, as for example from the US 5 095 561 are known, have a height-adjustable base. The base carries on its head a rotary hinge, via which the base is connected to a lying or mattress frame. The lying or mattress frame is divided in the longitudinal direction of the bed seen in three sections, namely a back or back portion, a central part and a lower leg section.

The central part is directly connected to the base via the hinge whose axis is vertical. The rear part is articulated via a hinge arrangement with a horizontal axis on the central part as well as the lower leg part.

To achieve the greatest possible stability, the base has seen in the longitudinal direction of the bed, relatively large dimensions. In contrast, he can not survive in width over the clearance of the reclining frame in the bed position.

In the normal bed or lying position, the reclining frame is substantially elongated and extends with its longitudinal axis parallel to the longitudinal axis of the footprint, which define the upstands of the pedestal on the floor.

In order to bring the user lying in bed in a sitting position, first the reclining frame is rotated in a position transverse to the base. Then the back part is erected and he pivoted lower leg part down. The reclining frame now has a chair-like configuration.

For technical reasons, in the sitting position, the front seat edge is above the base of the base. Depending on the weight of the user, how far he leans in the chair position on the edge of the seat, how heavy the base is, how large is the footprint of the base and if during the turning operation manipulation of the patient are made inappropriately, the arrangement can be especially when raised Lying frame get close to the stability limit. Exceeding this would cause the bed to completely tip over the page in question and pinch the user underneath.

From the US 5,390,380 In addition, a hospital or nursing bed with integrated person lift is known. The bed has a pedestal on which a mattress frame is arranged. Next to a long side of the bed is a rotatable column, at the upper end of a cantilever arm is attached. The arrangement forms a person lifter to lift a patient who is taken in a sling in the bed or bring out of it.

So that the bed does not tilt when the cantilever is oriented transversely to the bed longitudinal direction to the outside, an additional rigid support foot is attached to the bed frame.

Based on this, it is an object of the invention to provide a rotary bed, which is characterized by improved stability.

The solving of this object is achieved according to the invention with the features of the characterizing part of claim 1.

The new rotary bed stands with its pedestal on the floor, whereby the points of contact of the pedestal with the floor define a footprint. The footprint is usually rectangular. The largest extension of the rectangle runs parallel to the bed longitudinal direction. By means of a rotary hinge, the reclining frame assembly is mounted on the base, so that the reclining frame relative to the base by at least 90 °, relative to a vertical axis of rotation to rotate. In the normal bed or lying position, the longitudinal axis of the reclining frame is aligned parallel to the longitudinal axis of the footprint, while in the chair position, the axes are perpendicular to each other.

In order to increase the stability, at least one additional support foot is provided on the base, which protrudes from the footprint, in a direction which is substantially perpendicular to the longitudinal extent of the rotary bed in the normal bed or lying position.

The additional support foot, the footprint in enlarges the direction in which the lying frame protrudes in the chair configuration, based on that footprint which is defined without the support foot.

The footprint of the base can be formed depending on the embodiment of rails or strips, rigid base feet or rotatably mounted wheels.

The use of at least one additional support leg is particularly advantageous in connection with steerable wheels. Depending on the caster of the steerable wheels, the width of the footprint can change depending on the steering position of the wheels by up to 10cm, which is based on a normal Aufstellbreite of about 75cm is a very significant value that can significantly affect the stability.

The use of wheels or pedestal feet allows the bottom edge of the pedestal to be raised from the floor so that caregivers who handle the user in bed can tiptoe under the pedestal to be as close to the bed as possible.

So that when using wheels, the bed in the chair position can not roll, two wheels are expediently provided with brakes. These should be those wheels that are located away from the foot in the chair position.

Movable are preferable to support feet, if they are portable beds, as used in nursing homes and the like, and which are provided with the above-mentioned wheels.

The use of a movable support foot avoids a tripping hazard that could arise if the support foot rises significantly above the ground and juts out laterally beyond the clearance gauge of the bed in the reclining position.

It is advantageous if the free end of the support foot ends in a thin support plate. The support plate rises only slightly above the ground and does not pose a trip hazard even if it constantly protrudes laterally beyond the gauge of the bed.

The movable support leg is from a position in which it protrudes beyond the clearance space, and that is expediently also on the clearance space, which is defined by the reclining frame in the chair position, to move back into a position in which the support foot on the clearance profile no longer or barely survives.

This movement can be conveniently combined with a vertical movement, whereby the full ground clearance is maintained below the base over the entire footprint. This is important when lifting lifters.

In the case of using a movable support leg, it is advantageous if the free end of the support leg is connected to a roller, which allows the support foot to roll freely on the ground when it is moved back and forth between the two end positions.

For the movable support leg a hinge device is expediently provided, which is located at one of the cantilevered End remote position is located. It is conveniently located at the respective end of the support leg, namely that end which is constantly directly at the base.

Depending on how the support leg is executed, or what its trajectory looks like, the joint device can have one or two axes. In the case of a joint with two axes, one axis is a translational axis, while the other axis is a rotary axis.

With the aid of the hinge arrangement, the support foot is moved in its movement along a path which has at least one component which is oriented transversely to the bed longitudinal direction with respect to the lying position.

Such a movement path is also achieved when the support leg is to be rotated about an at least approximately vertical axis in order to bring it from the rest or parking position into the support position.

The two-axis hinge assembly may, for example, include two parallel spaced racks fixed to the base. On the racks roll off associated gears, which are rigidly connected to each other via a shaft on which the support leg is pivotally mounted.

The retracted position of the support leg is preferably defined by a stop which is effective outside a plane to which a drive means for moving the support leg engages, such that the support foot during Abutment is selbstätig pivoted upwards to the investment device.

A particularly stable arrangement is achieved when two support feet are provided, which are coupled together. For both support feet, a joint Jenkeinrichtüng be provided.

Caregivers can approach the bed particularly tightly if the pedestal has at least one longitudinal edge, which is spaced from the floor, at least in a central region relative to the longitudinal extent of the rotary bed in the normal bed or lying position.

Very stable conditions for the support leg are achieved when the support leg is movable back and forth in the gap between the edge and the bottom, wherein the base forms an abutment for the support foot located in the support position.

Moreover, further developments of the invention are the subject of dependent claims. In this case, such feature combinations are to be regarded as claimed, to which no express embodiment is directed.

Fig. 1

ein Drehbett in Gestalt eines Pflegebettes, in einer perspektivischen Darstellung in der Liegestellung,

Fig. 2

das Drehbett nach Figur 1 in der Stuhlstellung, ebenfalls perspektivisch veranschaulicht,

Fig. 3

die Gelenkanordnung zur Führung der beiden zusätzlichen Stützfüße, in einer perspektivischen Darstellung,

Fig. 4

ein Ausführungsbeispiel des erfindungsgemäßen Drehbetts mit einem einzigen schwenkbaren Stützfuß in einer vereinfachten perspektivischen Darstellung,

Fig. 5

die Anlenkung des Stützfußes in einer vergrößerten perspektivischen Darstellung mit verkürzt gezeigtem Stützfuß, in einer perspektivischen Darstellung, und

Fig. 6

den Ausschnitt gemäß Figur 5 mit dem Stützfuß in einer Seitenansicht.

In the drawings, embodiments of the subject matter of the invention are shown. Show it:

Fig. 1

a rotary bed in the form of a nursing bed, in a perspective view in the lying position,

Fig. 2

the rotary bed after FIG. 1 in the chair position, also illustrated in perspective,

Fig. 3

the joint arrangement for guiding the two additional support feet, in a perspective view,

Fig. 4

An embodiment of the rotary bed according to the invention with a single pivotable support leg in a simplified perspective view,

Fig. 5

the articulation of the support leg in an enlarged perspective view with abbreviated shown Stützfuß, in a perspective view, and

Fig. 6

the clipping according to FIG. 5 with the support foot in a side view.

The FIGS. 1 and 2 show in a simplified perspective view of a rotary bed 1, which is intended for use in nursing homes or clinics. To the rotary bed belong as essential components a base standing on the base 2, which is adjustable in height and on his head a in FIG. 2 implying recognizable rotating device carries. The rotating device has a movement axis in the form of a vertical axis of rotation. About the rotator 3 a total of 4 designated lying frame with the base 2 is connected. The lying frame 4, of which only the longitudinal beams can be seen in the figures, is divided into at least three sections. In this case, the visible longitudinal spar sections should be provided representative of the Liegerahmenabschnitte with the reference numerals.

A middle or central part 5 is connected via the rotating device 3 directly to the head of the base 2. At the head end of the central part 5, a back part by means of two aligned hinges 7 is hinged, which connect the spars of the respective sections together. With the help of the two hinges 7, the back part 6 is pivotable relative to the central part about a horizontal axis.

At the foot closes to the central part 5 a lower leg part 8, which is connected by hinges 9 with the central part 5. With the help of the hinges 9, the lower leg part 8 is pivotable relative to the central part 5 about a horizontal axis.

In order to increase lying comfort, it is still possible to divide the central part 5 into an immovable section and a thigh section. This variant is not shown in the figures, since it is for the understanding of the invention is not important.

On the so far described lying frame 4 is a mattress 11. Their length is an in FIG. 2 shown chair position and too short for a normal bed. In extension of the mattress 11 is therefore another Matratzenfußabschnitt 12, which is substantially immobile.

The height-adjustable base 2 has two longitudinal beams 13a and 13b, which are parallel to each other and parallel to the longitudinal axis of the rotary bed 1 in the in FIG. 1 Lying position shown are aligned. At the ends of the two longitudinal beams 13 a and 13 b steerable wheels 14 are mounted, the over steerable in the longitudinal beam 13a and 13b mounted forks 15 are pivotable with respect to a vertical axis.

The locations where the wheels 14 rest on the ground form the resting points on the ground and define a footprint that is approximately rectangular. The deviation from the rectangular shape is a consequence of the steerability of the wheels 14. Depending on how large the caster is and what the steering position of the wheels looks like, there is a more or less large deviation from the rectangular shape.

The two longitudinal beams 13a and 13b are rigidly connected to each other via two transverse beams 16a and 16b.

The base head forms a rectangular frame 17, which is composed of two mutually parallel longitudinal beams 18a and 18b and two transverse beams 19, of which only one can be seen for illustrative purposes.

At the lower two longitudinal beams 13a and 13b a total of 4 toggle levers 19a and 19b hinged, of which in FIG. 1 only the knee lever facing the viewer can be seen. Coincident with these visible toggle levers are on the other side another two toggle levers which are pairwise axis-parallel.

The knee levers 19 serve to connect the lower longitudinal beams 13 a and 13 b to the upper frame 17. In the area of their knee joint 20a, 20b, the toggle levers 19 on one side of the bed 1 are each still connected by a dome rod 21. The two coupling rods 21 are connected to each other via a connecting strut 22, wherein on the connecting strut 22 engages a lifting motor, not shown. A further obliquely extending rod is omitted in the figures for reasons of clarity. The complete structure of the base is for example the DE 96 04 074 to refer to which is hereby incorporated by reference.

From the head end of the upper frame 17 go out two struts 23 a and 23 b, which serve to connect a headboard 24 fixed to the base 2.

Two further struts 25a and 25b collar from the foot-side end of the frame 17 and carry a footboard 26 which is aligned parallel to the headboard 24. In addition, lies on the two struts 25a and 25b of the lower mattress section 12, optionally with intermediate storage of a spring device.

The use of the described rotary bed 1 is as follows:

In the normal lying position, the in FIG. 1 is shown, the mattress 11 extends longitudinally between the head and the footboard 24, 26, wherein it abuts the headboard 24. The foot-side gap is filled by the mattress 12. In the lying position of lying on the mattress 11, 12 patient can be driven by height adjustment of the base 2 arbitrarily up and down to bring him, for example, to a level in which a comfortable working height is achieved for the nursing staff. This height is perceived by the patient as unpleasant if no care measures are taken. The bed can therefore be lowered to a normal bed height.

In addition, in the lying position the back part. 6 and / or the foot part 8 with the help of electric motors are pivoted upward as desired.

If the patient is to be mobilized in bed or want to leave the bed despite physical limitations, it will be out of position by electric motors using appropriate control FIG. 1 in the position after FIG. 2 brought. For this purpose, first, starting from the lying position to FIG. 1 , the back 6 raised until the patient is comfortably erected in the back.

In addition, the lower leg part 8 is raised, whereby 2 things can be achieved. The patient feels a certain hold in the trough-like configuration of the reclining frame 4 and also the lower edge of the lower leg part 8 comes to a height above the upper edge of the mattress section 12. When this position is reached, the reclining frame 4 can also by means of an electric motor, not shown and a Control to be rotated about the vertical axis. In the present case in the plan view in the counterclockwise direction until the foot part 8 projects over the left side of the bed. In this position, the hinge axes of the hinges 7 and 9 are aligned parallel to the longitudinal direction of the rotary bed 1. The foot 8 can be pivoted by electric motor in the position of Figure 2 down. The back part 6, the central part 5 and the foot part 8 make the FIG. 2 apparent chair-like configuration.

Evidently, the patient is brought from the lying position with the help of the third-party drives and without intervention by nursing staff in the sitting position, in which his legs hang over the side of the bed down and can stand on the ground. The length of the lower leg part 8 is appropriately sized.

In the chair position 2 is due to the design and due to the anatomy of the human, the axis of the hinges 9, which is located under the thighs and is offset from the back of the knees toward the back, outside the footprint, which is defined by the wheels 14. In this case, in particular, that edge of the footprint which is defined by the wheels on the longitudinal spar 13b is important, because this is the edge over which the rotary bed 1 would tilt if overloaded. If the hinge axis 9 is projected onto the ground and measures the distance from the aforesaid line, it is to be noted that the distance depends on the steering position of the wheels 14. Point towards the viewer FIG. 2 , the distance is the smallest and the tilt resistance is greatest, while it is smaller when the steering wheels are facing away from the viewer. The tipping stability of the arrangement thus depends on the random steering position of the wheels 14, so that sitting in heavy patients unfavorable in the chair position on the reclining frame, possibly the limit of tipping stability can be achieved.

In order to exclude a tilt over the longitudinal beam 13b with certainty, two selectively extendable support legs 30a and 30b are provided. The two support feet 30a and 30b are FIG. 2 in the extended position illustrated and collar, as can be seen, laterally from the footprint, which is defined by the 4 wheels 14. They surround the side of the pointing to the bottom of the foot part 8 and ensure that now the tilting edge over which could tilt over the bed, no longer formed by the wheels 14 on the longitudinal spar 13b but by the free ends of the feet 30a and 30b is. If these installation points are beyond the projection line of the hinge axis of the hinges 9, tilting is impossible regardless of the load at this point. Even if the nursing staff lean on the bed while turning, the stability limit can never be exceeded.

The two support feet 30a and 30b are advanced only when needed, that is, only in the chair position FIG. 2 , Otherwise they would be bad tripping hazards, which is why they lie in the lying position FIG. 1 between the two spars 13a and 13b are withdrawn, and also raised from the ground. In FIG. 1 For reasons of clarity, only a part of the support leg 30b can be seen. The support foot 30a was not shown, because otherwise the figure would be overloaded with lines and the essential would no longer be recognizable.

To connect the support legs 30a and 30b to the base 2, there is a bearing assembly 31 as shown in FIG FIG. 3 is shown.

To the bearing assembly 31 includes two cross members 32 and 33 which are connected end to the two longitudinal beams 13 a and 13 b. They extend at right angles to the longitudinal bars 13a and 13b. Both crossbars 32 have a C-shaped profile and open towards each other. On its lower leg 34 in each case one in the longitudinal direction of the crossbar 32, 33 lying rack 35 is attached. Due to the perspective view of the cross-beam 33 only their closed back can be seen. From the opposite side would be the same view set, as for the crossbar shown 32nd

On the rack 35, a pinion 36 runs. A corresponding pinion runs on the rack, which is located in the cross-beam 33. The two pinions 36 are rotatably connected to each other via a shaft 37 which extends parallel to the longitudinal beams 13a and 13b.

The shaft 37 passes through a tubular connecting strut 38, which connects the inner ends of the two parallel aligned support legs 30a and 30b rigidly with each other, which are otherwise designed as a straight square tubes.

Approximately in the middle of the connecting strut 38 protrudes an extension 39 on which an actuating rod 41 of a drive motor 42 is articulated. The other end of the motor 42 is anchored to a tab 43 which is secured to the longitudinal spar 13a.

• Figur 3 zeigt die Stützfüße 30a und 30b in einer Zwischenstellung zwischen der vollständig vorgeschobenen Position, in der Stützfüße 30a und 30b sich in der Stützstellung befinden, und der Parkstellung, in der sie zwischen die beiden Längsholme 13a und 13b zurückgezogen und angehoben sind.

Finally, from the inside of the longitudinal spar 13a, a stop 44 projects in the direction of the opposite longitudinal spar 13b. The operation of the bearing assembly 31 in conjunction with the drive motor 42 is as follows:

• FIG. 3 shows the support legs 30a and 30b in an intermediate position between the fully advanced position, in the support legs 30a and 30b are in the support position, and the parking position in which they are retracted and raised between the two longitudinal beams 13a and 13b.

When the support feet 30a and 30b move from the position to FIG. 3 be transferred to the parking position, the drive motor 42 increasingly pulls the actuating rod 41 back towards the longitudinal beam 13a. Their rear end, with which they are mounted on the shaft 37, thereby moves in the direction of the longitudinal beam 13a, wherein the gears 36 act as wheels. However, since they are engaged with the racks 35, there is a positive synchronization, which prevents tilting between the crossbars 32 and 33.

As soon as the free ends of the support feet 30a and 30b are retracted behind the clearance of the longitudinal spar 13b, the connecting strut 38 abuts against the stop 44. Since this abutment point is lower than the point at which the actuating rod 41 acts on the tab 39, a torque is generated in the further course around the shaft 37, so that the support feet 30a and 30b are raised.

The drive motor 42 is stopped as soon as the two support feet 30a and 30b are raised until their free ends no longer project downwards beyond a plane defined by the underside of the two longitudinal struts 13a and 13b. This position is the parking position. In this position, floor lifts can easily be pushed under the two longitudinal beams 13a and 13b. There is also no risk that the staff in the care of the patient abuts any parts that protrude below the longitudinal beams 13a and 13b.

To extend the two support legs 30a and 30b, the drive motor 42 is set in motion in the opposite direction. Due to its own weight, the support feet 30a and 30b will first pivot down once until their free ends rest on the ground. So with the further movement the support legs 30a and 30b, no damage to the soil occurs, at their free ends, two associated rotatable rollers 45a and 45b are provided, which are rotatable about the bottom horizontal axes. The axes are perpendicular to the direction of movement of the support legs 30a and 30b during extension.

The two support feet 30a and 30b will now first rest with their own weight on the floor and advanced to the side of the bed under the spar 13b. Since the bearing force is defined on the ground only by the weight of the support legs 30a and 30b, there is no risk of crushing or other injury to someone whose feet are in the path of movement of the support legs 30a and 30b. The advancing movement only comes to a standstill when the two support feet 30a and 30b with their upper side facing the observer abut against the longitudinal spar 13b from below. Tilting in the movement are in turn prevented by the gears 36, which are rotatably coupled to each other, in conjunction with the stationary racks 35.

Once the adjustment just described is reached, that is, the support position, the motor 42 is stopped. Each of the two support legs 30a, 30b is now jammed under the spar 13b, resulting in a three-point support for each spar. Each bar, which rests with its roller 45 on the ground, abuts the distance from the roller 45 at the adjacent lower edge of the longitudinal spar 13b and is spaced from this point of contact at its end located in the base 4 via the shaft 37 and the Gear 36 supported on the cross-beam 32 and 33, respectively.

In the described support position, the two support feet 30a and 30b collar over the footprint of the rotary bed 1 from, in any pivot or longitudinal position of the wheels 14th

FIG. 4 shows an embodiment of the rotary bed 1 with the use of only a single support leg 30th

Apart from the type of articulation and the execution of the support leg 30, the bed 1 is designed in the same manner as in connection with the FIGS. 1 and 2 already explained in detail. The further description can thus be limited to the design of the support leg 30 and its linkage.

The support leg 30 is how FIG. 4 can recognize, hinged to the outside of the longitudinal spar 13b. The Anscharnierungsstelle is located at the foot, so that when swiveled support leg 30, a patient on the bed in the chair position according to FIG. 2 sitting, the support leg 30 would see right next to the lower leg section 8. In the park position, the support leg 30 is pivoted by 90 ° and is parallel to the spar 13b, with its free end is simultaneously lifted from the ground. In order to pivot the support leg 30, the drive motor 42 is provided, which is connected via an actuating rod 43 with a protruding from the support leg 30 tab 44.

In the support position of the support leg 30 leads from its articulation point 47 obliquely down, while it is parallel to the longitudinal spar 13b in the park position. To achieve this movement, the articulation point 47 is executed in a manner as they are in the Figures 5 and 6 shown in detail enlarged.

On the outside of the longitudinal spar 13b two outwardly projecting tabs 48 and 49 are welded, at the free end of a bearing bushing 51 is attached. The bearing bush 51 includes a cylindrical bearing bore not visible in the figures, the axis of which lies in a vertical plane which is oriented at right angles to the longitudinal axis of the rotary bed 1, that is to say at right angles to the longitudinal axis of the longitudinal spar 13b. In this mental level, the axis of the hole is panned, in such a way that it points away from the bed at the top and down towards the bed. The angle at which the axis of the bore of the bearing bush 51 is pivoted relative to the vertical, in a practical embodiment is about 22 °. The angle depends on how high the longitudinal beam 13b extends relative to the ground and how far the support leg 30 has to protrude.

The support leg 30 terminates at its bedside end in two mutually parallel flanges 52 and 53, which, like FIG. 6 can recognize the bearing bushing 51 overlap end, that is, the bearing bush 51 extends with little axial play between the two flanges 52 and 53. By aligned holes leads a hinge pin 54 in the form of a cap screw through, on the downwardly projecting thread, a nut 55 is screwed.

The projecting end of the support leg 30 is provided with a support plate 56. The actuating tab 44 is in the embodiment in Figures 5 and 6 from the upper bearing flange 53. It projects beyond the longitudinal spar 13b into the interior of the base 2. At a mounting hole 56 engages an actuating rod, which is symbolized by a dashed line 57. It is essentially parallel to the Longitudinal rail 13b and connects the actuating tab 44 with a not-shown motor.

In the in the Figures 5 and 6 shown supporting position of the support leg 30 protrudes seen from above at right angles to the longitudinal spar 13b. His support plate 56 may rest with the bottom on the ground or, which is preferred, are located at a slight distance of about 5mm above the ground. For retracting the support leg 30 is based, for example FIG. 5 turned counterclockwise about the hinge pin 54. In this case, the support plate 56 moves along an inclined circular path away from the ground, in the direction of the spar 13b. During this pivoting movement, the support plate 56 moves away from the bottom to above the underside of the longitudinal spar 13b at the same time. In this way, in turn, it is achieved that no parts of the base 2 protrude down over the lower edge of the longitudinal members 13, so that the foot freedom is maintained over the entire surface.

While in the explanation of the embodiment of the Figures 1 - 3 Assuming that the support feet 30a and 30b rest on the ground with a certain prestress, the support leg 30 according to the embodiment is corresponding to FIG FIGS. 4 to 6 at a small distance. Thus, first the tipping line along which a tilting may occur, the directly behind the foot part 8 extending connecting line between the adjacent associated wheels 14. If the tipping stability limit is exceeded by unfavorable load, a slight tilt occurs around this line, as long as the support leg 30 rests on the ground. Now the straight line around the tilting can occur, the connecting line between the support point of the support leg 30 and the head end next adjacent Rad 14. This line is much denser, on the axis of the hinges 9, so that after the effectiveness of the support leg 30 increased tipping stability is achieved. Since the tipping stability is usually sufficient and occurs at best in special cases, it is advantageous if the support leg 30 first hovers slightly above the ground in the support position. The swinging back and forth of the support leg 30 between the park and the support position does not produce any marks on the ground, which is particularly advantageous in soft soils. In addition, in the embodiment with floating support leg of the support foot are designed to be weaker. Namely, the support foot 30 only needs to accommodate the additional tilting force, with the base and the rest of the bed acting as a counterweight and relieving the support leg 30. In the embodiment according to FIG. 3 , in which the support feet 30a and 30b rest from the beginning with bias on the ground, significantly higher forces are to be removed in the normal case. The signs of wear on the floor are correspondingly larger.

A rotary bed has a pedestal on which an articulated bed frame is rotatable about a vertical axis. The reclining frame can be placed in a rotational position in a chair-like configuration. In order to increase the tipping stability of the arrangement in the chair position, at least one support foot is provided, which in the support position either rests on the ground from the beginning or only comes into contact with the ground when the stability limit without support foot is exceeded.

Claims (30)

1. Rotating bed (1), which can be moved out of a normal bed or lying position into a chair position, with a pedestal (2), which can be erected on a floor, is selectively adjustable in its vertical extent by motor and when in erected state defines a standing surface on the floor,
   with a rotary hinge (3), which is arranged on the pedestal (2) and has a vertical rotational axis,
   with a bed frame arrangement (4), which has at least three bed frame sections (5, 6, 8), the central bed frame section (5) of which is connected to the pedestal (2) by means of the rotary hinge (3),
   wherein the other bed frame sections (6, 8) are hinged to the central bed frame section (5) in such a manner that they are able to pivot around horizontal axes relative to the central bed frame section (5) in order to reach the chair position, characterised by at least one additional movable support foot (30), which is movable back and forth between two positions, wherein in one position it does not project, or projects only slightly beyond the clearance of the bed frame arrangement (4) in the bed position and in the other position projects from the standing surface, i.e. in a direction that lies substantially at right angles to the longitudinal extent of the rotating bed (1) in the normal bed or lying position, and
   a drive means (42), which is coupled to the at least one support foot (30) in order to move it back and forth between its two positions.
2. Rotating bed according to claim 1, characterised in that when in use the pedestal (2) stands on the floor at four erection points, which define the corner points of the standing surface, which is at least approximately rectangular.
3. Rotating bed according to claim 1, characterised in that the pedestal (2) has four immovable feet (63), which form the erection points.
4. Rotating bed according to claim 1, characterised in that the pedestal (2) has four wheels (14), which are rotatably disposed relative to a horizontal axis and form the erection points.
5. Rotating bed according to claim 4, characterised in that the wheels (14) can be additionally pivoted relative to a vertical axis with respect to the pedestal (2).
6. Rotating bed according to claim 4, characterised in that the wheels (14) are rotatably disposed relative to a horizontal axis by means of a fork (15), and that the fork (15) is rotatably connected to the pedestal (2) relative to a vertical axis.
7. Rotating bed according to claim 4, characterised in that at least one of the wheels (14) has an associated braking means, which can be moved selectively into a disengaged or a braking position.
8. Rotating bed according to claim 1, characterised in that the bed frame arrangement (4) has associated motors, by means of which the other two bed frame sections (6, 8) are adjustable in relation to the central bed frame section (5).
9. Rotating bed according to claim 1, characterised in that at its protruding end the support foot (30) is provided with a plate (56), which in the support position of the support foot (30) is oriented parallel to the floor.
10. Rotating bed according to claim 1, characterised in that at its protruding end the support foot (30) is provided with a roller (45), which is rotatably disposed around an axis parallel to the floor.
11. Rotating bed according to claim 1, characterised in that the additional support foot (30) is movably connected to the pedestal (2) in such a manner that the support foot (30) is movable from a support position, in which it projects beyond the wheels of the standing surface, into a stowing position, in which it is substantially retracted out of the clearance of the bed frame (4) located in the lying position.
12. Rotating bed according to claim 11, characterised in that the support foot (30) can be moved out of a lowered position, in which it is at least in direct proximity of the floor, into a raised position, in which it is at a greater distance from the floor.
13. Rotating bed according to claim 11, characterised in that the support foot (30) has an associated articulation arrangement (31, 47), which is located at a location of the support foot (30) remote from the protruding end.
14. Rotating bed according to claim 13, characterised in that the articulation arrangement (31) is configured such that during its movement the support foot (30) moves along a path, which has at least one component, which at least for a short distance is oriented transversely to the bed longitudinal direction with respect to the lying position.
15. Rotating bed according to claim 13, characterised in that the articulation arrangement (31, 47) is provided on an end of the support foot (30).
16. Rotating bed according to claim 13, characterised in that the articulation arrangement (31, 47) has at least one axis.
17. Rotating bed according to claim 16, characterised in that the at least one axis is a translatory axis or a rotational axis.
18. Rotating bed according to claim 13, characterised in that the articulation arrangement (31) is configured such that the support foot (30) can be pivoted relative to a horizontally oriented axis.
19. Rotating bed according to claim 13, characterised in that the articulation arrangement (31) has two toothed racks (35), which run parallel at a distance from one another and are fastened to the pedestal (2), and also two gearwheels (36), which roll on the toothed racks (35), are connected rigidly to one another by means of a shaft (37) and on which the support foot (30) is disposed to be able to pivot.
20. Rotating bed according to claim 19, characterised in that the retracted position of the support foot (30) is defined by a stop (44), which is active outside a plane, at which the drive means (42) engages to move the support foot (30) in such a manner that the support foot (30) is automatically pivoted upwards when it strikes against the abutment means (44).
21. Rotating bed according to claim 1, characterised in that two support feet are provided, which are coupled to one another.
22. Rotating bed according to claims 1 and 13, characterised in that a common articulation arrangement (31) is provided for both support feet (30).
23. Rotating bed according to claims 20 and 30, characterised in that the two support feet (30) are arranged between the two toothed racks (35) and are disposed on the common shaft (37) connecting the two gearwheels (36), which roll on the toothed racks (35).
24. Rotating bed according to claim 13, characterised in that the articulation arrangement (47) only has a pivot axis, which lies in a vertical plane.
25. Rotating bed according to claim 24, characterised in that the pivot axis is inclined in the vertical plane in such a manner that above the rotating bed (1) it is inclined outwards in relation to the rotating bed (1).
26. Rotating bed according to claim 13, characterised in that in its stowing position the support foot (30) is oriented parallel to the longitudinal axis of the rotating bed (1).
27. Rotating bed according to claim 1, characterised in that at least in a central region in relation to the longitudinal extent of the rotating bed (1) in the normal bed or lying position the pedestal (1) has at least one longitudinal edge (13), which is spaced from the floor.
28. Rotating bed according to claim 27, characterised in that the support foot (30) is movable back and forth in the gap between the edge (13) and the floor.
29. Rotating bed according to claim 28, characterised in that the longitudinal edge (13) spaced from the floor forms an abutment for the support foot (30) located in the support position.
30. Rotating bed according to claim 28, characterised in that a roller, which is oriented towards the support foot (30) when this is in its support position, is rotatably disposed on the longitudinal edge (13) of the pedestal (2) for the support foot (30).

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