DE2038549A1 - Bed frame with adjustable base - Google Patents

Description

Patent attorney Dipl.-Ing. K. Schieschke

Munich IS Elliabethitraß

Trioteam a / s, Oatergafde, Rönne, Denmark Bed frame with adjustable base

The invention relates to a bed frame or a bed, the lower part of which can be tilted and adjusted in height so that the head and foot end are on different levels Height.

109801/0264

Such bed frames are mainly used in hospitals and used clinics where there is a considerable relief for the staff when the beds are used to care for the Have bedridden people brought to the appropriate height for cleaning. The inclination of the lower part of the bed is above all in the treatment of various breathing difficulties.

The invention provides a bed frame in which this adjustment can be done easily by hand or mechanically can take place, in the latter case the patient can make the adjustment himself. The moving parts of the Adjustment mechanisms are designed and arranged so that there are practically no cleaning problems.

The bed frame according to the invention is characterized by a rigid, rectangular support structure on legs and / or Wheels with posts at the corners, on which a system of wires or chains is attached, possibly in Combination with tie rods, through a bed frame supported by this system so that it can be moved at its four corners, whereby the wires or chains from two posts at one end of the bed are passed over reversing elements and back to the questionnaire Bed end parallel to the wires or chains from the other end of the bed, furthermore by connecting the four ends of the Wires or chains with a common crossbar in the bed frame and through locking elements arranged at the four corners of the bed frame, which are thus coupled to one another are that each end of the bed frame can be locked at the maximum height as desired.

SAD ORiGiMA !.

109808/0264

The pull rod is preferably driven by one or more longitudinal spindles. If several spindles are used, they are driven at the same speed. Preferably, two spindles are used, on which the tie rod is arranged, which are provided with bores through which the ends of the tension elements are loosely guided and fastened on the opposite side, for example by nuts, rivets or the like. Due to the extreme arrangement of the spindles the free ends of the tie rod are shortened so that only very low bending forces can occur. The energy to *

Driving the spindles is preferably a reversible one Electric motor with reduction gear and worm gear with the possibility of attaching a handwheel or a crank for turning the worm shaft. However, the power transmission can also take place in other ways, e.g. via gears, chains and sprockets.

The pull rod and its drive elements are preferably located at the foot of the bed and are adjusted so that the end point of the movement of the pull rod towards the foot end of the bed with the highest position of the bed base while the other endpoint of the movement corresponds to the lowest setting. ,

At the end points of the movement, switches are preferably arranged, which are actuated by the pull rod and reverse the direction of rotation of the motor and the spindles.

It is advantageous to control the motor with push buttons, which can also be operated by the bedridden person.

109808/0764

To consider the way of working, assume the lowest bed position. When the motor is switched on, a force is exerted on the traction elements, which means that the bed is raised to full height at both ends if the motor is not switched off beforehand. To incline the lower part of the bed, it is locked in the top position at one end and the direction of rotation of the motor is reversed at the same time. This lowers the unlocked end of the bed, if necessary to the lower end point. If the motor is then not switched off, tk reverses its direction of rotation and the end of the bed is raised again to the full height.

In a further embodiment of the invention, the locking elements consist of tie rods that are designed so that they can only be released when both ends of the bed are at their maximum height. This prevents the locked end is released and falls down when the lower part of the bed is inclined. This could otherwise be possible, as the force on the tension elements disappears, when the drawbar returns to its original position.

In order to avoid that parts of the chains and wires of the train P elements of a locked end of the bed base follow the pull rod when the latter is lowered when the unlocked In the end, a friction brake block acts on each side of the traction elements. As a result, there can be no loose Parts hang under the bed frame, which would look unsightly and could lead to disturbances in the tension elements.

109808/0264

To simplify the operation of the locking element « these are provided with a common, manually operated control handle. The locking system on both Ends can be done as a pasquil interlocking each tie rod is actuated by one arm of a curved lever, on the other arm of which the control handle acts via a rack. The system can be designed so that movement of the control handle to one side on one end and movement to the other side of the other The end of the lower part of the bed is locked, the locking being released in the central position of the control handle. f

In a preferred embodiment of the bed frame according to the invention, the bed frame is designed as a double-walled, self-supporting construction with corner posts, which Include posts of the rigid support structure and grooves and have dovetail mounts for releasably attaching bed gables and side parts, with di · movable Part of the adjustment and locking device including chains, wires, rods and combinations of these Parts lying in the cavity of the double wall and the tie rod and its. Controls enclosed by a housing that connects the two long sides of the bed frame. |

This offers both hygienic and aesthetic advantages, since the risk is eliminated that the bedding or clothing of the bedridden person comes into contact with or even into the moving parts this gets involved »

109808/0264

2033549

An embodiment of the bed frames according to the invention is shown in the drawing. Ee shows:

Fig * 1 is a plan view of the rigid lower part with the outline of the enclosing bed frame shown in dashed lines,

Pig. 2 this is a side view, Fig. 3 is a plan view of the bed frame,

Fig. K details of the suspension of the bed frame on a larger scale and

Fig. 5 and Fig. 6 details of the locking elements.

According to FIGS. 1 and 2, the bed frame sits on a rigid H-shaped support structure 10 on wheels 11 which do not have Locking means shown can be braked.

The support structure 10 has posts 12 at each corner, which consist of inclined, parallel struts welded to the support structure 10 and which are connected to one another at the top via a spacer 13 with a button Ik.

The supporting structure 10 carries a bed frame 15, which is shown in dashed lines in FIGS. 1 and 2 and which hangs on wires or chains 16 or 17 which are fastened to the buttons Ik and guided over wheels or discs 18 (FIG. K) are. However, a set of wires or chains 17 passes over reversing wheels 19 and returns parallel to the chains or wires 16. The ends of the chains or wires 16 and 16 are preferably continued forward in tie rods that go through openings in a friction area block 20

109808/0264

to a crossbar 21. The tie rods are via holes worn loosely at the end of the crossbar 21, with nuts on the ends are screwed and press on the crossbar.

The bed frame 15 shown in plan view in FIG. 3 is designed as a double-walled construction with corner posts 22 which enclose the posts 12 on the supporting structure 10. The corner posts 22 carry fastening means (not shown) for detachable gables 23 and side parts 2k.

The drive device for the crossbar 21 is located in one in Fi ^. 3 housing shown in dashed lines 25 " In the embodiment shown, there is a drive mechanism from two spindles 26, each one close to a long side of the bed frame 15 · The spindles are from one Electric motor 27 driven, for example via a chain drive with a transverse shaft 28, which the train over Transmits bevel gears to the spindles 26. However, the drive device can also be designed in a suitable other manner will.

The wires or chains 16 and 17 and those continuing them Tie rods, the wheels or disks 18 and the reversing elements

19 lie in the cavities of the bed frame 15. In this hollow " A locking system is also built into the rooms, with the help of which the bed frame can be placed at one end in maximum Height is lockable.

109808/0764 BATH ORIGINAL

The locking system is based on the Pasquil locking principle executed, basic details are shown in Figs. 5 and 6 schematically.

A tie rod 29, which can lock the bed frame 15 to the post 12, is rotatably mounted in each corner post 22 of the bed frame 15. The tie rods 29 at the foot of the bed frame are actuated via a rack drive 30 by a gear J1 with a control handle 32. The two tie rods 29 at the foot of the bed frame act on the curved levers 33i, which transfer a back and forth movement to the tie rods on the opposite side of the bed via tie rods Jk and (also not shown) curved levers, so that one set of tie rods locks while the other is not engaged. The locking system is preferably designed such that all tie-rods are freely _t when the control handle 32 is in its middle position, while movement of the handle to one side of the one end and upon movement in the other direction the other end is locked.

Patent attorneys

Dipl.-Ing. E. Eder Dipl .-! Ng. ILSdieschke

8 MündHcil 13 &

109808 / Π764

Claims (2)

2030549 patent claims 1.) Bed frame with an inclined / height-adjustable lower part, characterized by a rigid, rectangular support structure (10) on legs and / or wheels (H) with posts (12) at the corners, on which a system of wires or chains ( is moored 17) l6, optionally in combination with tie rods, by using the four corners of this system slidably supported bed frame (15), the wires or chains (17) of two uprights (12) similar to a bed end over return elements ( 19) and back to the end of the bed in question parallel to the wires or chains (16) from the other end of the bed, by connecting the four ends of the wires or chains with a common cross bar (21) in the bed frame (15) and through at the four corners the bed frame arranged locking elements (29t 30) which are coupled to one another so that each end of the bed frame can be locked as desired at the maximum height. 2. Bed frame according to claim 1, characterized in that the locking elements (29 «30) consist of tie rods (29) which are designed so that they can only be released when both ends of the bed are at their maximum height ™ are located. 3 · Bed frame according to claim 1 _f, characterized in that the tension elements on each side are influenced by a friction brake block. 109808/0264 k. Bed frame according to Claim 1, characterized in that the locking elements (29t 30) are connected to a common control handle (32). 5 · Bed frame according to claim 1, characterized in that the bed frame (15) is designed as a double-walled, self-supporting construction, with the corner post (22) and the post (12) on the rigid support structure (10) include grooves or dovetail sockets for releasable attachment of gables (23) and side parts (24) are provided, and that the movable parts (16, 17, 19) of the adjustment elements and the locking elements, including chains, Wires, rods and their combinations are built into the cavities of the double walls, while the crossbar (21) and their control elements (26, 27t, 28) in one housing (25) are included, which connects the two long sides of the bed frame (15). Patent attorney Dipl.-Ing. E. Eder Dipl.-Ing. K. ^ ci.ieschke 8 Elisabeth's coin 109808/0264 Blank page