IL44130A

IL44130A - Hospital bed

Info

Publication number: IL44130A
Application number: IL44130A
Authority: IL
Original assignee: Bigla Ag
Priority date: 1973-02-05
Filing date: 1973-02-05
Publication date: 1977-10-31
Also published as: NL173708C; DK136052B; AT343274B; NO137036C; FR2215934B1; ATA1011173A; FR2215934A1; BE809645A; SE392398B; DE2360062A1; NO137036B; IL44130A0; DK136052C; CH560046A5; NL7401305A; DE2360062B2; NL173708B; GB1423091A

Description

Hospital Bed This invention relates to a hospital bed comprising a mattress frame adjustable in height in a horizontal position relative to an underframe and independently tiltable about a transverse axis, for which purpose the underframe is fitted with at least two angle levers which are each rotatable about a transverse axis extending perpendicularly of the longitudinal axis of the underframe, being offset relative to one another in the longitudinal direction, and one each of whose lever ams is pivotally connected to a push-out . unit mounted on the underframe, whils the other lever arm of each angle lever supports the mattress frame; and a stabilising bar which joins the mattress frame and the underframe together, the mattress frame being connected to the other arm of each angle lever through a hinged support.

In one known hospital bed of this kind, the stabilising bar is at least as long as the distance between the points at which the hinged supports are fastened to the mattress frame, and in which the stabilising bar and at least one of the hinged supports are fixed to the mattress frame through a common axis.

There is also known a construction of hospital bed which has been described in OAS 1 906,332. This construction too uses two pairs of angle levers, which - however contrary, to the, present invention - are functionally connected for simultaneous and equal movement. The construction, furthermore, is not "equipped with a stabilising bar of the kind employed by the present construction. As a result of thse structural differencces, of the mattress frame can be attained by the present construction and this can be achieved even at smaller swinging movement.

The object of the present invention is therefore to provide a hospital bed which can be raised and lowered with hardly any longitudinal deviation and which, i spite of this, embodies extremely simple kinematics i The hospital bed according to the invention is dis.-. , tinguished by the fact that, at one end, the stabilising bar is pivotally connected to the underframe and, at its other end, is pivotally connected to one of the hinged supports.

One embodiment of the invention is described by way of example in the following with reference to the accompanying drawings, wherein: Figure 1 is a side elevation of a hospital bed with the mattress frame in a raised, horizontal position.

Figures 2 to 5 are purely diagrammatic illustrations of the hospital bed shown in Figure 1 in its lowermost position, in its uppermost position, in a position in which it is raised and tilted towards the foot, and in another raised position in which it is tilted towards the head.

Figure 6 is a diagram illustrating the various movements of the hospital bed shown in Figure 1.

The hospital bed illustrated in the drawings comprises an underframe 2. which is equipped with wheels 6 in forks 4. A head fram section 8 is releasably . connected to the underframe 2 by means of a telescopic joint (not shown). The underframe 2 is surmounted by a •mattress frame 10. Push-out units 12 and 13 are fixed to the underframe 2, being pivotal about pivots 15 and 16 These units.12 and 13 are fitted with pushrods 18 and 20, for example piston rods or racks, which are pivotally fixed by means of bolts 22 and 23 to lever arms 25 and 26 of angle levers. These angle levers are in turn pivotally connected to. the underframe 2 through pivots 28 and 29, whilst the other two lever arms 31 and 32 of the angle levers are linked by bolts 34 and 35 to hinged supports 37 and 38. The other ends of the hinged supports 37 and 38 are pivotally connected to the mattres frame 10 at points 40 and 41. In a bearing 47, a strap 45 on the underframe 2 carries one end of a stabilising bar 49 which, at its other end, is connected to the hin ed su ort 37 b wa of a link 51. As shown in Figur this link 51 is situated between the bolt 34 and the point 40. , i Figures 2 and 3 diagrammatically illustrate the vertical movement of the horizontal mattress frame 10.

Figure 6 is the corresponding diagram of movement. When the push-out units 12 and 13 are simultaneously operated (which can be done for example by means .of a common operating knob), the mattress frame 10 makes a substantially vertical lifting or lowering movement. Figure 6 shows that the accompanying longitudinal movement of the mattress frame 10 is minimal. In practice, the deviation from. the perpendicular amounts to around 0.5 cm. The kinematics of this bed are self-evident, being largely determined by the position and length of the stabilising bar 49.

By using two independent push ut units 12 and 13, it is* possible individually to operate these units and, hence, to raise or lower the mattress frame 10 on the required side and to leave the other side or to move it in the same or opposite direction. It is also possible, by synchronising or coupling the push-out units 12 and 13 by a mechanical or electrical device which can be switched on and off, to displace the mattress 10 in any position parallel thereto, and hence readily to adapt the inclination and height of the mattress frame to meet requirements.

The push-out units 12 and 13 can be hydraulically , mechanically or electrically operated. Piston-and-cyl nder assemblies, ' racks, threaded spindles and the like can be used for this purpose.

This hospital bed is extremely simple in structure, readily accessible and easy to clean, and can even be effortlessly operated by the patient himself.

The mattress frame can be raised substantially vertically over a height of 380 mm. In known embodiments level and, inspite of this, the mattress frame moved into a higher position for the nursing staff.

Claims

CLAIMS . WHAT IS CLAIMED l£ : ^

1. A hospital bed comprising- a mattress frame adjustable .in height in a horizontal position relative to an underframe and independently tiltable about a transverse axis, for' which purpose the underframe is fitted with at least two angle levers which are each rotatable about a transverse axis extending perpendicularly of the longitudinal axis of the underframe, being offset relative to one another in the longitudinal direction, and one each of whose lever arms . is- pivotally connected to a push-out unit mounted on the underframe, whilst the other lever arm of each angle lever supports the mattress frame; and a stabilising bar which joins the mattress frame and the underframe together, the mattress frame being connected . to the other arm of each angle lever through a hinged support, wherein, at one end, the stabilising bar (49) is pivotally connected (47) to the unde frame (2) and, at its other end, is pivotally connected (51) to one of the hinged supports (37).

2. A hospital bed as claimed in Claim 1, wherein two independently operable push-out units (12,13) are provided for raising arid lowering on one side and hence for inclining the mattress frame (10) in the longitudinal direction, displacing the frame (10) parallel in the existing inclined or horizontal position when simultaneously operated in the same direction.

3. A hospital bed as claimed in Claim 2, wherein the push-out units (12,13) are accommodated in the space defined by the other arms (25,26) of the angle levers.

4. A hospital bed as claimed in Claim 1, wherein the stabilising bar (49) is shorter than the distance between the points (40,41) at which 'the hinged supports (37,38) are fixed to the mattress frame (10). · .

5. A hospital bed as claimed in Claim 1, wherein the stabilising bar (49) is linked to the hinged support (37) between the point (40) at which the hinged support (37) is fixed to the mattress frame (10) and the point (34) at which it is fixed to the angle lever.