WO2008043542A2

WO2008043542A2 - Cot

Info

Publication number: WO2008043542A2
Application number: PCT/EP2007/008810
Authority: WO
Inventors: Torsten Kappenberg
Original assignee: Kayserbetten Gmbh & Co. Kg
Priority date: 2006-10-11
Filing date: 2007-10-10
Publication date: 2008-04-17
Also published as: DE202006015576U1; WO2008043542A3; US20100005586A1

Abstract

The invention relates to a cot comprising four height-adjustable side parts (3). In order to enable the side parts to be vertically adjusted without applying a force, a plurality of controllable motors (4) is provided on the bed (1) for lowering and raising each side part (3), such that the height can be continuously adjusted. An electric motor or a hydraulic motor is used as the motor (4), and a vertical hollow post (5) is provided on at least one of the corners of the bed (1), the motor (4) being arranged in the cavity (10) of said post with a spindle-nut drive. The hollow post (5) is embodied as an extruded profiled element (38) with different functional moulded elements.

Description

cot

The invention relates to a bed, in particular a cot, with a lying on a bed frame lying surface and at least one height-adjustable side part, preferably four gratings, respectively on the longitudinal and transverse sides of a lying surface, wherein the grid can be individually or jointly lowered and raised at least partially ,

Infants at risk of falling out of bed while crawling must be accommodated in specially secured cribs. From the prior art (DE 200 23 172) hospital beds for infants with transverse parts at the top and bottom of the bed and side panels on the sides are known. In order to prevent the toddlers from falling out of bed, the transverse and side parts are formed as a grid. These transverse and side parts have a sufficient height relative to the bed surface of the bed, so that the young children can not climb or climb over these transverse or side panels. In order to still be able to look after the children in bed, it is known from DE 200 23 172 U1 that the side and cross members can be pivoted from a vertical position downwards, wherein for lowering or raising the grid on the longitudinal and transverse sides the lying surface one or more controllable gas springs are provided on the bed frame.

Such beds for infants have the disadvantage that to overcome the gas pressure, a force when pivoting the side panels is necessary. This is disadvantageous for the persons caring for infants. Another disadvantage is that to lower the grid at the same time the grid and an actuator must be operated, which is a high Coordination, which can be particularly difficult for the elderly.

The object of the invention is therefore to develop the well-known in the art beds for children so that the bed is easy and safe to handle and the side rails can be adjusted without effort in height.

This object is achieved in that one or more controllable drive motors are provided on the bed frame for lowering and raising the grid of the cot. By the motors, a height adjustment of the grid is possible without any effort.

In the lower end position of the grid, the upper edge of the grid runs below the lying surface or at the same height as the lying surface. In this position, the lying surface is accessible from all sides of the bed. In the upper end position of the grid, the lying surface is bounded on all sides by the grid, so that the toddlers can not fall out of bed even when crawling. For easier care of the children, the height of the grids is infinitely adjustable within a predetermined range.

Preferably, an electric motor is provided for driving the grid. This has the advantage that the household power grid can be used directly as an energy source. In addition, an electric motor is quiet and reliable. Another advantage is that even at low engine speeds the maximum torque is available. The electric motor can also be designed as a servomotor, stepping motor or linear motor. In a further embodiment, a hydraulic motor is provided. The drive motor is advantageously housed securely on the bed and not visible from the outside, because at least one of the corners of the lying surface, preferably at all four corners, a vertically extending hollow post is provided in the cavity of each drive motor is arranged. The motor can be a low-voltage motor, but since it is not accessible from the outside, it can also be operated with the full mains voltage.

The drive motor is arranged in the lower region of the hollow post and has a spindle drive whose axis of rotation extends along the longitudinal axis of the hollow post. This results in a favorable position of the engine due to the low center of gravity. The spindle extends vertically along the cavity, whereby it is advantageously possible to accommodate not only the motor, but also the associated device for transmitting the rotation in the hollow post. A spindle drive also has the advantage that it is self-locking and thereby retains a once occupied position. As a result, the grid is held in any position.

If the spindle drive has a slide which moves up or down as the spindle drive rotates, depending on the direction of rotation, the rotational movement of the spindle is effectively converted into a vertical translational movement.

A safe but cost-effective movement of the carriage is ensured by the fact that a guide for the up and down moving carriage are provided in the hollow post.

Further advantageous embodiments are described in the subclaims 5 to 15. - A -

The invention will be described by way of example in a preferred embodiment with reference to a drawing, wherein further advantageous details are shown in the figures of the drawing.

Functionally identical parts are provided with the same reference numerals.

The figures of the drawing show in detail:

Figure 1 is a perspective view of the invention

bed,

2a shows a vertical section of the bed according to section line A-A in Figure 2b,

FIG. 2b shows a top view of the bed,

FIG. 3 a shows a detail according to marking X in FIG. 2 a,

FIG. 3b shows a perspective view of the drive assembly,

3c shows a cross section through a hollow post profile,

4a shows a side view of the cot with fully raised side rails,

FIG. 4b shows a side view of the cot with half-raised side rails and

Figure 4c is a side view of the cot with fully lowered down side rails.

Figure 1 shows an overall perspective view of the bed 1. The bed 1 consists essentially of a frame 2, which is formed from an upper frame frame 17 and a lower frame frame 16. Of the Upper frame frame 17 is composed of two longitudinal frames 17 "and two transverse frames 17 'and the lower frame frame 16 from lower longitudinal frames 16" and lower transverse frames 16 ", all of which are connected in their corners by four hollow posts 5 to the frame Bottom of the hollow posts 5 are wheels 9, so that the bed is mobile, for the sake of clarity no mattress is shown.

The hollow posts are closed at the bottom by a motor base 19 and at the top by a cap 20.

In order to prevent frail persons or children from falling out of bed, in addition to the frame frames 16, 17 in the hollow posts on all sides side parts 3 are guided vertically displaceable and lockable. The statement serving

Locking mechanisms 18 are manually operable. The side parts 3 are designed as transverse 3 'and longitudinal grids 3 "so that they can be seen through the parts." These transverse and longitudinal gratings 3', 3 "have a sufficient height in relation to the lying surface of the bed 1, not shown, so that infants do not about this cross or

Can climb or climb longitudinal grid.

The illustration shows the bed 1 with fully moved down front and rear side rails 3. So in particular the

Longitudinal grids 3 "can be adjusted in height without any effort, controllable electric motors are provided, which are advantageously not visible in FIG.

Figure 2a shows a vertical section of the cot and Figure 2b is a plan view of the cot. The sectional plane "AA" in FIG. 2a corresponds to the plane marked "A" in FIG. 2b. As can be seen from FIGS. 2a and 2b, the invisibility of the drives is based on the fact that the four bed posts are designed as hollow posts 5 and in each case an electric motor 4 is accommodated in the lower area within a hollow post 5. The necessary for the implementation of the rotational movement of the motor in the translational vertical movement of the side parts 3 gear train is also invisible from the outside housed as a spindle nut drive 6 in the cavity of the post 5. This results in an aesthetically pleasing appearance, since motor 4 and spindle nut drive 6 are not visible and the bed 1 therefore does not differ externally from conventional cots.

In Figure 2a, the cavity 10 is shown within the post 5, in the lower region of the motor 4 is arranged. This drives a spindle with mother arranged thereon and thus forms the spindle nut drive 6, the axis of rotation parallel to the longitudinal axis of the

Hollow post 5 runs. So it is not only the motor 4, but also the associated device for implementing the rotation in a translational movement in the hollow post 5 housed.

The spindle nut drive 6 moves a carriage 7, which moves up or down upon rotation of the electric motor 4, depending on the direction of rotation. The inner sides of the hollow post 5 are formed as a guide 15 for the carriage 7.

FIG. 3a shows the detail X from FIG. 2a. The carriage 7 consists of a base body 11 penetrated by the spindle 22. At its upper and lower end, guide bodies 12 ', 12 "each made of plastic are located, which slide along the inner sides of the post 5 serving as guide 15 during the vertical movement is the base body 11 in the region of its lower end firmly connected to the nut 21.

Figure 3b shows the drive assembly consisting essentially of motor 4, spindle 22, nut 21 and carriage 7 in a perspective view. The carriage 7 has additional limit switch stops 23 which actuate the associated limit switch when reaching the grid end positions and the motor 4 off. Furthermore, at the upper end of the carriage 7, a bracket 27 is fixed with a horizontal bore 24. In this hole engages a spring-assisted pin 28 (Figure 3c) of a locking mechanism 18 of the grid 3, which is received horizontally movable in the upper spar of the grid 3. By means of a suitable handle, the bolt can be pulled manually against the force of a spring from the bore 24. The grid is then separated from the drive and can be lowered manually. This is advantageous, for example, in the event of a power failure. As a torque arm, which the

Reaction forces of the drive receives, serves the Motorfußplatte 19, which closes the post bottom.

Between spindle 22 and motor 4 is still a planetary gear 25 and for safety, a resilient coupling 26 is connected. For example, if the movement of the grid blocked, the spindle 22 moves axially, so that the clutch 26 is shortened or stretched. This movement is used to operate a switch that shuts off the drive.

FIG. 3c shows the cross section of the hollow post. The hollow post 5 has on its side facing the grating 3 a vertically extending slot 8, through which the bolt 28 mounted in the upper spar 29 of the grid engages in the bore 24 of the console 27, so that the grid 3 is connected to the carriage 7. Both ends of the longitudinal grid 3 ¹ are coupled in this way, each with a drive. The crossbars 3 "point no motor drives on. The driving forces are thereby advantageously introduced symmetrically in the construction.

In the embodiment shown in Figures 2a and 2b, a longitudinal grid 3 "is driven in each case by two electric motors 4. In principle, each grid can also be driven unilaterally, so that a drive can be assigned to each grid side Cross bars 3 are driven by an electric motor 4 independently.

The upper and lower grille bars 29, 30 has as a guide at each end a T-shaped guide profile 31, which engages in a T-shaped guide groove 32 of the adjoining hollow post 5 adapted thereto. The leadership of the vertical movement of the longitudinal grid 3 'is characterized mechanically very stable.

Because the spindle-nut drive 6 is self-locking, it retains a once-occupied position even when the engine is switched off. As a result, the grid 3 is securely held after stopping in any position.

The transverse lattice 3 "fastened to the same hollow post 5 is vertically movably guided in the hollow post in the same way but, as mentioned, is not motor-driven, but instead can be locked at different height levels Grating is provided, several arranged at different heights holes 33 in the hollow post 5 introduced.

Advantageously, the profile of the hollow post made of aluminum is extruded. The extruded profile is symmetrical and can therefore be used to make all four posts of the bed. Right and left posts one Bed side differ only by the position of the slot 8 and the locking holes 33. Additional molded rear handles 34 allow to insert wood profiles as a decorative strip 35 and thereby give the entire bed the pleasant look of a wooden bed. It is particularly advantageous that the profile of the hollow posts also has profiled grooves 36, in which the frames 16, 17 are received very stably by means of suitable fastening elements 37. In a further diagonally arranged groove 39 limit switches are attached.

Figures 4a, 4b and 4c show a front view of the bed 1, each with fully raised longitudinal grid 3 ", with half raised longitudinal grid 3" and with fully driven down longitudinal grid 3 ".

LIST OF REFERENCE NUMBERS

1 bed

2 frame

3 side parts

3 'crossbar

3 "longitudinal grid

4 drive motor

5 hollow posts

5 'hollow post right

5 "hollow post left

6 spindle nut drive

7 sleds

8 slot

9 wheel

10 cavity

11 basic body

12 guide body

12 "guide body above

12 "guide body below

13

14

15 leadership

16 frame

17 frame

18 locking mechanism

19 motor base plate

20 cap

21 mother

22 spindle 23 limit switch

24 hole

25 planetary gear

26 spring clutch 27 console

28 bolts

29 Upper grid rail

30 Lower grid rail

31 Guide profile 32 Guide groove

33 locking hole

34 rear grip

35 decorative strips

36 profiled groove 37 fastener

38 Extruded profile

39 mounting groove

Claims

1. bed, especially cot, with at least one on a bed frame (2) height-adjustable side part (3), preferably four side parts (3), respectively at the longitudinal and transverse sides of the bed (1), characterized in that for lowering and lifting the at least one side part (3) one or more controllable motors (4) are provided on the bed (1), and / or that the height of the upper edge of the at least one side part (3) is infinitely adjustable within a predetermined range.

2. Bed according to claim 1, characterized in that as motor (4) an electric motor or a hydraulic motor is provided and at least one of the corners of the bed (1), preferably at all four corners, a vertically extending hollow post (5) is, in whose cavity (10) each have a motor (4) is arranged.

3. Bed according to one of the preceding claims, characterized in that the motor (4) in the lower region of the hollow post (5) is arranged and preferably has a spindle nut drive (6) whose axis of rotation parallel to the longitudinal axis of the hollow post (5 ) and that the spindle

Mother drive (6) has a carriage (7) which moves up or down upon rotation of the motor (4), depending on the direction of rotation.

4. Bed according to one of the preceding claims, characterized in that in the hollow post (5) has a guide (15) for the up or down moving carriage (7) is provided.

5. Bed according to one of the preceding claims, characterized in that the hollow post (5) on its side part (3) facing side has a vertically extending slot (8).

6. Bed according to one of the preceding claims, characterized in that the side part (3) with the carriage (7), preferably releasably, is connected.

7. Bed according to one of the preceding claims, characterized in that the hollow post (5) is formed as an extruded profile (38), wherein the profile (38) preferably rear handles (34) for inserting decorative strips (35).

8. Bed according to one of the preceding claims, characterized in that the profile (38) has a profiled groove (36) with a rear grip for fastening a Zargenendes (16, 17).

9. Bed according to one of the preceding claims, characterized in that the profile (38) has a guide groove (32), preferably with a rear handle, for guiding the side part (3).

10. Bed according to one of the preceding claims, characterized in that the profile (38) has an inwardly open fastening groove (39).

11. Bed according to one of the preceding claims, characterized in that the spindle (22) is arranged to pass through the carriage (7).

12. Bed according to one of the preceding claims, characterized in that between the spindle (22) and the motor (4) is provided a spring clutch (26).

13. Bed according to one of the preceding claims, characterized in that the carriage (7) in the region of its lower End has a in a thread of the spindle (22) engaging nut (21).

14. Bed according to one of the preceding claims, characterized in that the carriage (7) shorter or equal to the length of the spindle (22) is formed, wherein the spindle (22) is formed longer or equal to a maximum displacement of the side part (3) ,

15. Bed according to one of the preceding claims, characterized in that the carriage (7) in the region of its upper end a bracket (27), in which preferably a bore

(24) for receiving a bolt (28) is formed.