EP3270859B1 - Height-adjustable bed - Google Patents

Description

The invention relates to a height-adjustable bed, in particular a hospital and / or nursing bed, with a bed frame and two Bettendstücken that accommodate the bed frame between them, as well as with two telescopic lifting columns, each cooperating with one of the two Bettendstücke and a support section and a procedural section have, wherein the lifting columns are each arranged with their respective support portion bettaußenseitig the associated bed end, and wherein the procedural section of a lifting column has a Hubsäulenfuß on which a pivotable about its vertical axis formed support roller is articulated.

A height adjustable bed of the aforementioned, that is generic type is from the DE 20 2012 103 958 U1 known.

The previously known bed has a bed frame, which serves to receive a lying surface element, such as a slatted frame, wherein the lying surface element in the intended use case in turn serves to receive a mattress, a cushion element and / or the like. The bed frame extends between two bed ends, which accommodate the bed frame between them. The bed end pieces typically each have an end plate which is bolted or otherwise connected to the spars of the bed frame.

The previously known bed is adjustable in height. There are provided for this purpose two lifting columns, which are telescopic and one each Have support portion and a procedural section. The lifting columns each cooperate with the Bettendstücken, wherein the one lifting column on the first bed end piece and the second lifting column is arranged on the second bed end piece.

According to the previously known construction, the lifting columns are each arranged on the bed outside the associated bed end. This provides, in contrast to a trained below the bed frame height adjustment the advantage of a relatively wide travel path. In addition, the previously known construction makes it possible to provide a low bed entry height in the downwardly moved state of the bed, which is approximately 200 mm in the case of the generic bed construction.

For the purpose of movability, the previously known bed has carrying rollers. These are arranged on Hubsäulenfuß each lifting column, wherein the Hubsäulenfuß is supported by the process section of the lifting column. For better maneuverability, each support roller is designed to be rotatable about its respective vertical axis. This allows, in particular when maneuvering the bed a comparatively small turning circle, as this is required for a proper use in the hospital and / or care sector.

The WO 03/070145 relates to a bed construction which has a lower frame and an upper frame. Both frames are designed to be vertically movable. For this purpose, a lifting mechanism is provided at each end of the two frames. Each lifting mechanism has a base bar and a cross bar, which are spaced from each other with the interposition of a lifting cylinder. An actuation of the lifting cylinder causes the crossbar moves in the height direction relative to the base beam. Furthermore, two telescopic columns are arranged between the base beam and the crossbar. These telescopic columns are used to connect both the lower frame and the upper frame, in each case on the movable upper section of the telescopic columns.

Although the above-described construction has proven itself in everyday practice, there is room for improvement. It is particularly desirable to achieve an even lower bed entry height.

It is therefore the object of the invention to provide a bed of the type mentioned To further develop this, which provides a full lower functionality compared to even lower bed entry height, that is a bed entry height of less than 200 mm.

To solve this problem, a bed with the features of claim 1 is proposed by the invention.

The embodiment of the invention is characterized by its distance between the pivot point of each support roller and associated Bettendstück. In this case, the distance between the articulation point and the bed end piece corresponds at least to the torsion radius writable by the support roller.

By constructive action according to the invention it is ensured that each support roller can rotate freely about its vertical axis, without it comes with a twisting movement of the support rollers to a collision with the associated Bettendstück. Due to the design, it is therefore possible to shut down the bed frame with the bed end pieces arranged thereon to floor level. Due to the spacing, the idlers remain freely rotatable about their vertical axis by 360 ° and are not obstructed by a down to floor level down bed frame or by the bed end pieces arranged thereon.

The structural design also ensures that it can not come in a Nachuntenverfahren the bed frame with the bed end pieces arranged thereon to a collision with a still located below the bed frame support roller. The inventively provided spacing ensures that a support roller can not rotate under the bed frame or a bed end piece arranged thereon. Due to the spacing according to the invention, the bed frame and the bed end pieces arranged thereon or the support rollers are arranged in their respective movement possibility collision-free to each other.

The collision-free alignment of the bedstead and arranged Bettendstücken on the one hand and the support rollers on the other hand, it allows the bed frame together with it shut down bed ends down to floor level. Depending on the height of the bed frame, a bed entry height of less than 200 mm, preferably less than 150 mm, even more preferably less than 100 mm, can be achieved. Thus, the embodiment of the invention over the prior art construction according to the DE 20 2012 103 958 U1 a significant improvement.

It is provided according to the invention that the Hubsäulenfuß has a Fußholm and two at each end arranged support beams, each providing a support roller, each support beam is oriented in an angled away from the associated Bettendstück direction by an angle α. The carrying spars providing the carrying rollers are therefore bent in a direction pointing away from the respectively associated bed head educated. Through this angled design of the support beams spacing arrangement according to the invention is realized. The support rollers are each preferably arranged at the end of each support beam, the length of each support beam and the Abkröpfungswinkel are coordinated such that the supporting role providing end portion of each support beam is so far away from the associated bed end that in the already described manner a collision-free rotational movement of the support roller or movement of the bed frame, together with the bed end pieces arranged thereon is permitted.

The support bars are not only angled in a direction away from the respective bed end piece direction, they also extend starting from the footrest in the height direction angled upwards, whereby a maximum movability of the bed frame and the bed end pieces arranged thereon in the height direction is down.

Each support roller is equipped according to a further feature of the invention each with a height direction above the respective support roller arranged cap member. This cap element serves as a wall deflector or edge protection. The collision-free alignment of the support roller in accordance with the construction according to the invention requires that the support rollers project beyond the outer dimensions of the bed frame or the bed end pieces arranged thereon. During a bed maneuver, this can lead to the carrying rollers moving against walls, furniture and / or the like. In order to provide a contact protection extent, the above-described cap member is proposed with the invention. This is arranged in the height direction above the respectively associated support roller and has a radius which exceeds the radius of rotation of the associated support roller. This ensures that in the event of a collision, not the carrying roller but the cap element comes into collision contact. The cap member accordingly consists of a preferably soft elastic material that does not rub off even under the influence of friction. Preferably, the cap member is also designed to be rotatable about its vertical axis, so that in the contact case, a rolling of the cap member on the contact object, for example, the building wall and / or the like can take place.

It is provided according to a further feature of the invention that the support portion provides a hollow columnar body, the lower end edge in the height direction above the height in the lower end edge of the associated Bettendstücks is arranged. Thus, the support portion and the bed end piece are not flush with each other with respect to their lower body edge. Rather, the bed end portion projects beyond the support section in the lower region, which advantageously forms a free volume between the lower end edge of the support section on the one hand and the lower end edge of the bed end section in the vertical direction. This free volume is used in a movement of the bed down to provide a receiving space for the lower part of the procedural section of the lifting column as well as for the footrest of Hubsäulenfußes carried by the procedural section. In a traversing movement of the bed down, in particular, the footrest in this free volume, that is enter this space, which ensures maximum mobility of the bed down.

The column body carries at its upper end edge a cover that terminates preferably at least partially flush with the height in the upper end edge of the associated Bettendstücks.

The support section provides according to a further feature of the invention on the outside two facing each other and extending in the vertical direction grooves. These grooves serve to receive functional elements, in particular plate-shaped decorative elements. These can be inserted running in the longitudinal direction of the grooves with their respective edge sides in the associated grooves, whereby they are held positively in the final assembled state in the grooves. By means of the end cover and the grooves are formed on the top side closed, whereby a positionally secure fixation of the plate-shaped decorative element is secured to the support section.

With the invention, a lifting column is further proposed with the features described above. Such a lifting column provides the advantages already described above.

• Fig. 1 in schematischer Perspektivansicht ein erfindungsgemäßes Bett in einer ersten Stellung;
• Fig. 2 in einer Frontansicht das Bett nach Fig. 1;
• Fig. 3 in einer Seitenansicht das Bett nach Fig. 1;
• Fig. 4 in einer Draufsicht von oben das Bett nach Fig. 1;
• Fig. 5 in schematischer Perspektivdarstellung ein erfindungsgemäßes Bett in einer zweiten Stellung;
• Fig. 6 in einer Frontansicht das Bett nach Fig. 5;
• Fig. 7 in einer Seitenansicht das Bett nach Fig. 5;
• Fig. 8 in einer Draufsicht von oben das Bett nach Fig. 5;
• Fig. 9 in schematischer Perspektivansicht ein erfindungsgemäßes Bett in einer dritten Stellung;
• Fig. 10 in einer Frontansicht das Bett nach Fig. 9;
• Fig. 11 in einer Seitenansicht das Bett nach Fig. 9 und
• Fig. 12 in einer Draufsicht von oben das Bett nach Fig. 9.

Further features and advantages of the invention will become apparent from the following description with reference to FIGS. Show

• Fig. 1 a schematic perspective view of a bed according to the invention in a first position;
• Fig. 2 in a front view the bed behind Fig. 1 ;
• Fig. 3 in a side view the bed after Fig. 1 ;
• Fig. 4 in a top view from the bed after Fig. 1 ;
• Fig. 5 a schematic perspective view of a bed according to the invention in a second position;
• Fig. 6 in a front view the bed behind Fig. 5 ;
• Fig. 7 in a side view the bed after Fig. 5 ;
• Fig. 8 in a top view from the bed after Fig. 5 ;
• Fig. 9 a schematic perspective view of a bed according to the invention in a third position;
• Fig. 10 in a front view the bed behind Fig. 9 ;
• Fig. 11 in a side view the bed after Fig. 9 and
• Fig. 12 in a top view from the bed after Fig. 9 ,

The FIGS. 1 to 12 let each recognize the bed 1 according to the invention, wherein the FIGS. 1 to 4 in each case different views of the bed 1 in a first position, the FIGS. 5 to 8 in each case different views of the bed 1 in a second position and the FIGS. 9 to 12 show in different views the bed 1 in a third position.

As can be seen from a comparison of the figures, the bed 1 of the invention has a bed frame 2. This is between two Bettendstücken 5 and 6, that is, the head piece 5 on the one hand and the foot 6 on the other. In the intended use case, the bed frame 2 serves to support a lying surface element 7. In the embodiment shown, the lying surface element 7 formed as a slatted frame and has a plurality of relatively pivotally formed sections 10, as in particular a synopsis of FIGS. 9 to 12 lets recognize.

The bed frame 2 has in the illustrated embodiment, two outer frame members 3 and two inner frame members 7. These are end connected to the respective bed ends 5 and 6, preferably screwed.

Each bed end piece 5 or 6 provides a closure plate 9, which may be formed, for example, of wood or of plastic or a combination material.

In order to support a bed mattress received by the lying surface element 7 in the intended use case, the lying surface element 7 has spring elements 8, wherein each bar of the lying surface element 7 is provided with a plurality of spaced-apart spring elements 8. In the figures, some of these spring elements 8 are exemplified.

The bed 1 is adjustable in height, for which purpose the bed 1 has lifting columns 11 and 12. These are each formed bed end piece side, wherein it is provided that the lifting columns 11 and 12 are formed on the bed outside. In the illustrated embodiment, the Fußendstück 6 carries the lifting column 11 and the head end 5, the lifting column 12th

The lifting columns 11 and 12 are each designed to be telescopic and have a support section 13, a center section 14 and a drive section 15. In this case, the travel section 15 is formed relative to the center section 14 and the center section 14 relative to the support section 13.

The FIGS. 1 to 4 let the bed 1 with extended lifting columns 11 and 12 recognize. In this position of the bed 1, the lifting columns 11 and 12 are moved in the height direction 23 maximum.

The procedural section 15 of each lifting column 11 or 12 has a Hubsäulenfuß 16. This has in the illustrated embodiment, a footrest 17, at the end of each support beams 18 and 19 connect. These beams 18 and 19 are, in particular the representation after Fig. 2 can recognize, in the height direction 23, starting from the leg rail 17 bevelled and have in the height direction 23 upwards. In addition, the support beams 18 and 19, as in particular the top view Fig. 4 can recognize, at an angle α formed angled relative to the associated Bettendstück, in a direction opposite from the associated bed end piece 5 and 6 direction.

The support beams 18 and 19 each carry the support rollers 20 arranged thereon, wherein the support rollers 20 are each pivoted about their vertical axis 22 rotatably on the associated support beam 18 and 19 respectively. In this case, the distance A between the Anienkpunkt 21 of a support roller 20 and the associated Bettendstück 5 and 6 exceeds the rotation radius r described by the support roller 20 about its vertical axis 22, as shown in particular the illustration Fig. 4 lets recognize.

Due to the cranked configuration of the support beams 18 and 19 a collision-free method of the bed frame with the bed end pieces 5 or 6 arranged thereon is possible in a lower position, as in the FIGS. 5 to 8 is shown. How the particular FIGS. 6 and 7 can recognize the Bettgestellt 2 with its bed end pieces arranged thereon 5 and 6 pass collision-free on the support rollers 20 each lifting column 11 and 12, so that the bed frame 2 with its arranged bed end pieces 5 and 6 until it rests on the floor down can. The wheels rotatable about their respective vertical axis 22 neither engage under the bed frame 2 nor the bed end pieces 5 and 6 disposed thereon and therefore do not obstruct such a travel movement that extends so far downwards.

Furthermore, as can be seen in particular from the illustrations according to the FIGS. 6 and 7 results in the lower end edge 24 of the support portions 13 of the lifting columns 11 and 12 in the height direction 23 above the lower end edge 25 of the end plate 9 of the associated bed end piece 5 and 6 from. In this way, a lying between the lower end edges 24 and 25 free space 26 is created, in which the respective associated Hubsäulenfuß 16 can enter with his Fußholm 17 in the case of Nachuntenverfahrens the bed 1.

The support portion 13 of each lifting column 11 and 12 has on its bedendstückabgewandten side in the height direction 23 extending grooves 28 which extend at the edge of each support section 13. The grooves 28 are facing each other with their open side and are used in the intended use of the edge receiving a supported by the support portion 13 decorative element in the form of a decorative plate. This can be introduced in the longitudinal direction of the grooves 28 in this and serves in particular the visual enhancement of the support portion 13. Instead of a decorative plate but other functional elements can be added by the grooves 28.

In the final assembled state of the support portion 13 of each lifting column 11 and 12 on the upper side by means of a lid 27 is closed. This cover 27 also serves for the end-side closure of the grooves 28, so that a functional element received by them can not accidentally fall out of these or be removed therefrom.

According to a further feature of the invention, the bed frame 2 of the bed 1 has extendable in bed longitudinal direction frame rails 3 and 4. For this purpose, the frame beams 3 and 4 may be formed, for example, telescopic or otherwise have two sections which are displaceable relative to each other in the bed longitudinal direction , Thanks to this configuration, it is possible to extend the bed 1 if necessary by pulling out. In the retracted state of the frame beams, the bed end pieces, for example, a standard distance of preferably 2 m. This allows the inclusion of a standard mattress by the lying surface element 7. If necessary, the bed 1 can be extended by pulling the frame rails 3 and 4 in the bed longitudinal direction, for example, to an internal dimension between the bed end pieces 5 and 6 of 2.20 m. The frame members 3 and 4 thus allow an increase in distance between the two end pieces 5 and 6 of 20 cm.

In order to ensure that there is no unwanted tilting of the frame members 3 and 4, ie their respective sections to one another during an extension of the bed or a return of the bed 1 to its standard dimensions, according to a further aspect of the invention, a gear arrangement is provided, by means of which the second sections of the frame members 3 and 4 are movably coupled in their traversability in the bed longitudinal direction. By the gear assembly is thus achieved a synchronization of the movable frame rails 3 and 4, which ensures that regardless of a force on the bed end pieces 5 and 6 an always same movement of the frame members 3 and 4 is ensured. Synchronization by means of the gear arrangement thus causes the frame members 3 and 4 are moved in and out in the same way. The problem of possible tilting is thus completely eliminated.

The gear arrangement brings about a further advantage. It can be used for force transmission into bed frame 2 for bed extension or shortening. It is not necessary in this respect, the user side to seize the bed end pieces 5 and 6 for a bed extension or -in shortening and proceed. Particularly preferred in this context, the gear assembly is to be driven by an electric motor. This allows the user side, therefore, to achieve a desired bed extension or shortening at the push of a button. The ease of use is thereby increased considerably. In particular, it is not necessary for a desired bed extension or reduction to provide two people for handling. Rather, due to the gear arrangement by a single person bed extension or shortening can be made.

LIST OF REFERENCE NUMBERS

1

bed

2

bed frame

3

Outer frame spar

4

Inner frame spar

5

Bed end piece (head end piece)

6

Bed end piece (foot end piece)

7

Lying surface element (slatted frame)

8th

spring element

9

End plate

10

section

11

Lifting column

12

Lifting column

13

supporting section

14

mid section

15

Verfahrabschnitt

16

Hubsäulenfuß

17

base beam

19

spar

20

supporting role

21

articulation

22

vertical axis

23

height direction

24

Lower end edge

25

Lower end edge

26

free space

27

cover

28

groove

A

distance

r

Verschwenkradius

α

corner

Claims (7)

1. A height-adjustable bed, in particular a sick bed and/or care bed, comprising a bed frame (2) and two bed end parts (5, 6) which receive the bed frame (2) therebetween, as well as comprising two telescopic lifting columns (11, 12) which each cooperate with one of the two bed end parts (5, 6) and comprise a support section (13) and a displacement section (15), wherein the lifting columns (11, 12) are each arranged on the associated bed end part (5, 6) with their respective support sections (13) on the outside of the bed, and wherein the displacement section (15) of a lifting column (11, 12) comprises a lifting column foot (16), on which a load-bearing roller (20) that can be rotated around the vertical axis (22) thereof is arranged,
   characterized in that
   the distance (A) between the pivot point (21) of the load-bearing roller (20) and the associated bed end part (5, 6) exceeds the rotation radius (r) definable by the load-bearing roller (20) when rotating around the vertical axis thereof, wherein the lifting column foot (16) comprises a base holm (17) as well as two support bars (18, 19) which are each arranged thereon on the end side and which each provide a load-bearing roller (20), wherein each support bar (18, 19) is oriented in an angled manner at an angle (α) in a direction that points away from the associated bed end part (5, 6).
2. A bed according to claim 1, characterized in that each load-bearing roller (20) is equipped with a cap element that is respectively arranged above the respective load-bearing roller (20) in the direction of height (23).
3. A bed according to claim 2, characterized in that the capelement is designed in a circular shape and it comprises a radius that is greater than the rotation radius (r) of the associated load-bearing roller (20).
4. A bed according to claim 2 or 3, characterized in that the cap element is arranged in a rotatable manner.
5. A bed according to one of the preceding claims, characterized in that the support section (13) provides a hollow column body, the lower closing edge (24) of which in the direction of height is arranged above the lower closing edge (25) of the associated bed end part (5, 6) in the direction of height (23).
6. A bed according to one of the preceding claims, characterized in that the support section (13) provides, on the outside, two grooves (28) facing each other and extending in the direction of height (23).
7. A bed according to one of the preceding claims, characterized in that the support section (13) carries a closing cover (27).

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