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EP0087430B1 - Device for adjusting the angular position of a pivoting support surface - Google Patents

Device for adjusting the angular position of a pivoting support surface Download PDF

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Publication number
EP0087430B1
EP0087430B1 EP82902435A EP82902435A EP0087430B1 EP 0087430 B1 EP0087430 B1 EP 0087430B1 EP 82902435 A EP82902435 A EP 82902435A EP 82902435 A EP82902435 A EP 82902435A EP 0087430 B1 EP0087430 B1 EP 0087430B1
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EP
European Patent Office
Prior art keywords
frame
frames
disposed
gas spring
opposite sides
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Expired
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EP82902435A
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German (de)
French (fr)
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EP0087430A1 (en
Inventor
Hans Fickler
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Individual
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Individual
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Priority to AT82902435T priority Critical patent/ATE20638T1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C20/00—Head-, foot- or like rests for beds, sofas or the like
    • A47C20/04—Head-, foot- or like rests for beds, sofas or the like with adjustable inclination
    • A47C20/048—Head-, foot- or like rests for beds, sofas or the like with adjustable inclination by fluid means
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C20/00—Head-, foot- or like rests for beds, sofas or the like
    • A47C20/04—Head-, foot- or like rests for beds, sofas or the like with adjustable inclination
    • A47C20/041—Head-, foot- or like rests for beds, sofas or the like with adjustable inclination by electric motors

Definitions

  • the invention relates to a device for adjusting the angular position of a pivotable support surface, in particular the support surface for the head end of the mattress in a bed frame.
  • Bed frames of this type are used in particular in hospitals and for nursing care, but also in private households, but are very expensive, since the adjustable head and / or foot section is integrated in the special construction of the bed frame. People in need of care should in particular be able to operate the adjustable head part themselves in order to be able to position themselves for eating or reading etc. without outside help, which is why a motorized drive for the adjustable part is necessary.
  • DE-A-2 447 739 describes a sprung additional seat which makes it easier for the disabled to get up from a seat.
  • a pivotable support surface which has two frames pivotally connected to one another by means of an axis of rotation, one of which is intended to lie horizontally on a support and the other which forms a support surface with respect to the horizontal in a variable angular position, which under the Effect of at least one spring arranged in the region of the axis of rotation between the two frames.
  • the object underlying the present invention was to provide a device for raising a part of the lying surface, in particular the head part, which can be used in any normal bed frame, which is provided with a motor drive and is easy to transport to more than one bed frame to be able to use one after the other, and in particular is considerably cheaper than the conventional devices of this type.
  • the space below this support surface for the mattress for accommodating the drive and the adjustment device cannot be used because of the large number of designs of the support for the mattress in the form of a slatted frame or spring frame.
  • the problem here is therefore to accommodate all the elements necessary for swiveling a support surface up and down, including the drive, in the smallest space, because when not in use, the support surface swiveled downwards of the devices inserted under the mattresses should not impair lying comfort or not be noticeably noticeable make, why the device should be extremely flat.
  • the object is that two frames pivotally connected to one another by means of an axis of rotation on a wheel, one of which is intended to lie horizontally on a support and the other forms the support surface which can be adjusted in a variable angular position with respect to the horizontal, under the effect of at least one arranged in the region of the rotary axis, between the two frames effective prestressed torsion spring bar and at least one gas spring supported between the two frames are pressed apart in the sense of an angle enlargement and that both frames are connected to one another by flexible traction means, by means of which the frames for the purpose of continuously changing the angle with the aid of an the drive means arranged on a frame and acting on the traction means can be pulled against one another against the action of the torsion spring bar and gas spring or can be pivoted apart under the action of the latter.
  • Two torsion spring bars which are arranged parallel to the axis of rotation and to one another, are each held in place with one end on opposite sides of the one frame and pressed at one angled other end against rolling elements arranged on opposite sides of the other frame.
  • two gas springs are expediently articulated with their one end on opposite sides of the one frame and with their other end on opposite sides of the other frame.
  • a torsion spring bar and a gas spring act together on opposite sides and cause the frame forming the pivotable support surface to be pushed up.
  • a torsion spring bar and a gas spring are each arranged on the same frame side in such a way that as the angle between the two frames increases, the spring force of the pretensioned torsion spring bar decreases as the torque exerted by the gas spring on the frame in the sense of increasing the angle increases.
  • the torsion spring rod which is expediently preloaded during installation with a rotation angle of 50 °, is tensioned by a further approx. This strong spring force then decreases when the frame is swung open, if at the same time the same Directional gas spring with an increasing effective lever arm exerts an increasing moment on the frame.
  • a steel cable to each of the frames on opposite sides as a flexible traction means, which two steel cables are guided over deflection pulleys arranged on the other frame and are attached with their other ends parallel to one another on a pivot lever mounted in the other frame, which can be pivoted by an electric lifting motor arranged in the other frame with a threaded spindle articulated on the pivoting lever.
  • the device has a specific frame 1 to be placed on a horizontal base, in particular a bed frame (not shown in the drawing), on one edge of which a further frame 3 of substantially the same size is pivotally attached by means of an axis of rotation 2.
  • a cladding surface 4 or 5 is fastened on the outside, so that the device is externally comparable to a very flat case.
  • the frame 3 with the surface 5 forms the support surface against which the head-side end region of a mattress (not shown in the drawing) is supported, and which support surface should be set in any angular position relative to the horizontal frame 1, which should be possible by actuating a motor.
  • two torsion spring bars 6 and 7 extend in the lower frame 1 almost over the entire width of the frame 1 and can be passed through two bearing blocks 8 and 9.
  • the front torsion spring bar 6 in the drawing is angled by 90 ° behind the bearing block 8 and its straight end is held in the bearing block 9 in a rotationally fixed manner, so that the entire length of the torsion spring bar can twist relative to this end held in place.
  • the torsion spring rod 7 behind it is angled by 90 ° in the drawing in front of the bearing block 9 and its free end is held in the bearing block 8 in a rotationally fixed manner.
  • the angled ends of the two torsion spring bars 6 and 7 are each pressed against a roller 10 and 11, which are mounted on the inside on opposite sides of the frame 3.
  • the angled ends of the two torsion bars move relative to the rollers.
  • the two torsion spring bars 6 and 7 are installed with a pre-tension corresponding to a swivel angle of 50 °.
  • the two torsion spring bars act in the sense of increasing the angle between the two frames, wherein they exert the greatest spring force when the two frames 1 and 3 lie parallel one above the other.
  • two gas springs 12 and 13 are attached to opposite sides of the two frames with one end on frame 1 and the other end on frame 3.
  • Each gas spring also works with a pressure of approx. 40 kg in the sense of increasing the angle between the two frames 1 and 3. If the two frames 1 and 3 lie one above the other in parallel, the gas spring can only act on the frame with a very short effective lever arm 3 act. If, starting from the position with frames 1 and 3 lying one above the other in parallel, the spring force of the two torsion spring bars 6 and 7 decreases with increasing angle between the frames, the moment exerted by the two gas springs becomes increasingly larger due to the increasing effective lever arm, so that between the two Frame a little fluctuating force in the sense of increasing the angle between the frame is effective.
  • This force of the springs is counteracted by a cable pull, through which the two frames 1 and 3 are pulled against each other.
  • a first steel cable 14 is attached at one end to the frame 3 and guided over a deflection roller 15 which is rotatably mounted on the frame 1 at the level of the gas spring 12 and then via a further deflection roller 16 which is mounted in the corner of the frame 1 and finally via one on the longitudinal side of the frame arranged deflection roller 12 out.
  • the other end of this steel cable 14 is attached to a tensioning device 18, which is attached to a pivot lever 19.
  • This pivot lever 19 is pivotally mounted on the frame 1 by means of a pivot pin 20.
  • a second steel cable 21 is fastened at one end on the opposite side of the frame 3, guided over a deflection roller 22 mounted in the frame 1 at the level of the gas spring 13, then via a further deflection roller 23 arranged in the frame corner of the frame 1 and finally via a pulley 24 arranged on the longitudinal side of the frame, which is loaded on the same axis as the pulley 17 for the other steel cable 14. device.
  • the end of the steel cable 21 is fastened to a tensioning device which, like the tensioning device 18, is also attached to the swivel lever 19 is attached.
  • a tensioning device which, like the tensioning device 18, is also attached to the swivel lever 19 is attached.
  • the tensioning devices 18 and 25 are shown attached to one another on the pivot lever 19 for clarification, but in reality these fastening ends lie one above the other on the pivot lever, since the steel cables would otherwise be pulled unevenly.
  • the pivot lever 19 is pivoted with the aid of a lifting motor 26 in the direction of the arrow 27, the frame 3 against the action of the two torsion spring bars 6 and 7 and the two gas springs 12 and 13 against the lower frame 1 by pulling the two steel cables 14 and 21 is pulled.
  • the two frames 1 and 3 lie one above the other in parallel. From this end position, the frame 3 can be brought into any desired angular position with respect to the frame 1 by actuating the motor 26 in the opposite direction.
  • the lifting motor 26 is pivotally mounted in the frame 1 by means of a pivot pin 28 so that the motor can carry out the lateral movement caused by the movement of the connection point between the motor and the pivot lever 19 on a circular arc.
  • a motor which is somewhat too weak in relation to the required force and is therefore supported by a gas spring 29. which is connected in parallel to the motor 26 with one end likewise pivoted on the pivot lever 19 and with the other end on the frame 1 and exerts a force in the direction of movement on the pivot lever, which leads to a reduction in the angle between the frames.
  • the lifting motor 26 is connected to the mains via a cable 30.
  • the direction of movement of the lifting motor can be reversed by actuating a switch 31.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

The device has two frames (1, 3) interconnected by a rotation shaft (2) and spaced from each other by torsion bars (6, 7) and by pneumatic springs (12, 13) prestressed and arranged close to the shaft (2). The inclined upper frame (3) is used as a support for the mattress portion located close to the head of a bed. In order to vary the inclination angle of the upper frame (3), there are provided steel cables (14, 21) fixed to said upper frame and which are deviated by pulleys (15, 16, 17, 22, 23, 24) arranged on the other frame (1) and connected to a pivoting lever (19) on the latter frame (1) and actuated by a lifting motor (26). By actuating the lifting motor (26) in one direction, the cables (14, 21) cause the pivoting of one frame (1) against the other frame (3) and against the reaction of portion bars (6, 7) and of pneumatic springs (12, 13). By actuating the motor in the opposite direction, the frames (1, 3) are moved away from each other under the effect of the torsion bars (6, 7) and of the pneumatic springs (12, 13).

Description

Die Erfindung betrifft eine Vorrichtung zum Verstellen der Winkelllage einer schwenkbeweglichen Stützfläche, insbesondere der Auflagefläche für das kopfseitige Ende der Matratze in einem Bettgestell.The invention relates to a device for adjusting the angular position of a pivotable support surface, in particular the support surface for the head end of the mattress in a bed frame.

Aus der DE-A-2 420 598 sind Bettgestelle mit einem verstellbaren Kopf- und/oder Fussteil des Gestells bekannt, die jeweils durch einen Schubantrieb um eine zur Liegefläche parallele Drehachse hochgeschwenkt werden. Wegen des geringen zur Verfügung stehenden Platzes zwischen der Liegefläche und dem Boden können für die Schwenkbewegungen keine langen Hebelarme verwendet werden und dementsprechend sind ziemlich kräftige Schubantriebe notwenig, die den grössten Kostenfaktor bei derartigen Betten darstellen.From DE-A-2 420 598 bed frames with an adjustable head and / or foot part of the frame are known, each of which is pivoted up by a thrust drive about an axis of rotation parallel to the lying surface. Because of the small space available between the lying surface and the floor, long lever arms cannot be used for the pivoting movements and, accordingly, fairly powerful thrust drives are necessary, which represent the greatest cost factor with such beds.

Bettgestelle dieser Art werden insbesondere in Spitälern und für Pflegefälle, aber auch im privaten Haushalt verwendet, sind jedoch sehr teuer, da der verstellbare Kopf- und/oder Fussteil in der Spezialkonstruktion des Bettgestells integriert ist. Pflegebedürftige Personen sollten insbesondere den verstellbaren Kopfteil selbst bedienen können, um sich zum Essen oder Lesen etc. ohne fremde Hilfe in die für sie günstige Position bringen zu können, weshalb ein motorischer Antrieb für den verstellbaren Teil notwendig ist.Bed frames of this type are used in particular in hospitals and for nursing care, but also in private households, but are very expensive, since the adjustable head and / or foot section is integrated in the special construction of the bed frame. People in need of care should in particular be able to operate the adjustable head part themselves in order to be able to position themselves for eating or reading etc. without outside help, which is why a motorized drive for the adjustable part is necessary.

In der DE-A-2 447 739 wird ein gefederter Zusatz-Sitz beschrieben, der Gehbehinderten das Aufstehen von einer Sitzgelegenheit erleichtert.DE-A-2 447 739 describes a sprung additional seat which makes it easier for the disabled to get up from a seat.

Von dieser Patentschrift ist eine schwenkbewegliche Stützfläche bekannt, die zwei mittels einer Drehachse an einem Rand schwenkbeweglich miteinander verbundene Rahmen aufweist, von denen einer horizontal auf einer Unterlage aufzuliegen bestimmt ist und der andere die gegenüber der horizontalen in variabler Winkellage eine Stützfläche bildet, welche unter der Wirkung mindestens einer im Bereich der Drehachse angeordneten zwischen beiden Rahmen wirksamen Feder stehen.From this patent, a pivotable support surface is known which has two frames pivotally connected to one another by means of an axis of rotation, one of which is intended to lie horizontally on a support and the other which forms a support surface with respect to the horizontal in a variable angular position, which under the Effect of at least one spring arranged in the region of the axis of rotation between the two frames.

Die der vorliegenden Erfindung zugrundeliegende Aufgabe bestand darin, eine in jedem normalen Bettgestell verwendbare Vorrichtung zum Hochstellen eines Teils der Liegefläche, insbesondere des Kopfteils, zu schaffen, die mit einem motorischen Antrieb versehen ist und leicht zu transportieren ist, um sie bei mehr als einem Bettgestell nacheinander verwenden zu können, und die insbesondere wesentlich billiger als die herkömmlichen Einrichtungen dieser Art ist.The object underlying the present invention was to provide a device for raising a part of the lying surface, in particular the head part, which can be used in any normal bed frame, which is provided with a motor drive and is easy to transport to more than one bed frame to be able to use one after the other, and in particular is considerably cheaper than the conventional devices of this type.

Wenn die Vorrichtung für jedes normale Bettgestell verwendbar sein soll, kann wegen der Vielzahl von Bauformen der Auflage für die Matratze in Gestalt eines Lattenrostes oder Sprungfederrahmens etc. der Platz unterhalb dieser Auflagefläche für die Matratze zum Unterbringen des Antriebs und der Verstelleinrichtung nicht verwendet werden. Das Problem besteht demnach hier in der Unterbringung aller für das Auf- und Abwärtsschwenken einer Stützfläche notwendigen Elemente einschliesslich Antrieb auf kleinstem Raum, denn bei Nichtgebrauch soll die nach unten geschwenkte Stützfläche der unter die Matrazte eingeschobenen Vorrichtungen den Liegekomfort nicht beeinträchtigen bzw. sich nicht störend bemerkbar machen, weshalb die Vorrichtung extrem flach ausgebildet sein soll.If the device is to be used for any normal bed frame, the space below this support surface for the mattress for accommodating the drive and the adjustment device cannot be used because of the large number of designs of the support for the mattress in the form of a slatted frame or spring frame. The problem here is therefore to accommodate all the elements necessary for swiveling a support surface up and down, including the drive, in the smallest space, because when not in use, the support surface swiveled downwards of the devices inserted under the mattresses should not impair lying comfort or not be noticeably noticeable make, why the device should be extremely flat.

Die Lösung der Aufgabe besteht erfindungsgemäss darin, dass zwei mittels einer Drehachse an einem Rad schwenkbeweglich miteinander verbundene Rahmen, von denen einer horizontal auf einer Unterlage aufzuliegen bestimmt ist und der andere die gegenüber der Horizontalen in variabler Winkellage einstellbare Stützfläche bildet, unter der Wirkung mindestens eines im Bereich der Drehbachse angeordneten, zwischen beiden Rahmen wirksamen vorgespannten Torsionsfederstabes und mindestens einer zwischen beiden Rahmen abgestützter Gasfeder im Sinne einer Winkelvergrösserung auseinandergedrückt sind und dass beide Rahmen durch flexible Zugmittel miteinander verbunden sind, mittels welcher die Rahmen zwecks stufenloser Veränderung des Winkels mit Hilfe eines an dem einen Rahmen angeordneten und am Zugmittel angreifenden Antriebsmittel gegen die Wirkung von Torsionsfederstab und Gasfeder gegeneinander ziehbar bzw. unter deren Wirkung auseinander schwenkbar sind.According to the invention, the object is that two frames pivotally connected to one another by means of an axis of rotation on a wheel, one of which is intended to lie horizontally on a support and the other forms the support surface which can be adjusted in a variable angular position with respect to the horizontal, under the effect of at least one arranged in the region of the rotary axis, between the two frames effective prestressed torsion spring bar and at least one gas spring supported between the two frames are pressed apart in the sense of an angle enlargement and that both frames are connected to one another by flexible traction means, by means of which the frames for the purpose of continuously changing the angle with the aid of an the drive means arranged on a frame and acting on the traction means can be pulled against one another against the action of the torsion spring bar and gas spring or can be pivoted apart under the action of the latter.

Zwecksmässig sind zwei zur Drehachse und zu einander parallel angeordnete Torsionsfederstäbe mit jeweils einem Ende an einander gegenüberliegenden Seiten des einen Rahmens festgehalten und mit einem jeweils abgewinkelten anderen Ende gegen an einander gegenüberliegende Seiten des anderen Rahmens angeordnete Wälzkörper angedrückt.Two torsion spring bars, which are arranged parallel to the axis of rotation and to one another, are each held in place with one end on opposite sides of the one frame and pressed at one angled other end against rolling elements arranged on opposite sides of the other frame.

Ferner sind zweckmässig zwei Gasfedern mit ihrem jeweils einen Ende an einander gegenüberliegenden Seiten des einen Rahmens und mit ihrem jeweils anderen Ende an einander gegenüberliegenden Seiten des anderen Rahmens gelenkig abgestützt. Damit wirken auf einander gegenüberliegenden Seiten jeweils ein Torsionsfederstab und eine Gasfeder zusammen und bewirken, dass der die hochschwenkbare Stützfläche bildende Rahmen hochgedrückt wird. Dabei sind je ein Torsionsfederstab und eine Gasfeder auf der gleichen Rahmenseite derart zu einander angeordnet, dass bei mit zunehmendem Winkel zwischen den beiden Rahmen nachlassender Federkraft des vorgespannten Torsionsfederstabes das von der Gasfeder auf den Rahmen im Sinne der Winkelvergrösserung ausgeübte Moment fortlaufend zunimmt. Der beim Einbau zweckmässig mit einem Drehwinkel von 50° vorgespannte Torsionsfederstab wird beim Gegeneinanderziehen der beiden Rahmen um weitere ca. 70° gespannt. Diese starke Federkraft nimmt dann beim Aufschwenken der Rahmen ab, wenn gleichzeitig die in der gleichen Richtung wirkende Gasfeder mit einem zunehmenden wirksamen Hebelarm ein grösser werdendes Moment auf den Rahmen ausübt.Furthermore, two gas springs are expediently articulated with their one end on opposite sides of the one frame and with their other end on opposite sides of the other frame. Thus, a torsion spring bar and a gas spring act together on opposite sides and cause the frame forming the pivotable support surface to be pushed up. A torsion spring bar and a gas spring are each arranged on the same frame side in such a way that as the angle between the two frames increases, the spring force of the pretensioned torsion spring bar decreases as the torque exerted by the gas spring on the frame in the sense of increasing the angle increases. The torsion spring rod, which is expediently preloaded during installation with a rotation angle of 50 °, is tensioned by a further approx. This strong spring force then decreases when the frame is swung open, if at the same time the same Directional gas spring with an increasing effective lever arm exerts an increasing moment on the frame.

Ferner ist zweckmässig, an dem einen Rahmen an einander gegenüberliegenden Seiten als flexibles Zugmittel je ein Stahlseil befestigt, welche beiden Stahlseile über an dem anderen Rahmen angeordnete Umlenkrollen geführt und mit ihren anderen Enden parallel nebeneinander an einem in dem anderen Rahmen gelagerten Schwenkhebel befestigt sind, welcher durch einen in dem anderen Rahmen angeordneten elektrischen Hubmotor mit an dem Schwenkhebel angelenkter Gewindespindel verschwenkbar ist. Wenn der Motor den Schwenkhebel in der einen Richtung verschwenkt, wird der unter der Wirkung der Torsionsfederstäbe und der Gasfedern hochgeschwenkte Rahmen durch Zug an den Stahlseilen gegen den horizontalen Rahmen heruntergezogen, während bei umgekehrter Drehrichtung des Motors und Bewegungsrichtung des Schwenkhebels der durch die Stahlseile gehaltene Rahmen zum Hochschwenken frei gegeben wird.Furthermore, it is expedient to attach a steel cable to each of the frames on opposite sides as a flexible traction means, which two steel cables are guided over deflection pulleys arranged on the other frame and are attached with their other ends parallel to one another on a pivot lever mounted in the other frame, which can be pivoted by an electric lifting motor arranged in the other frame with a threaded spindle articulated on the pivoting lever. When the motor swivels the swivel lever in one direction, the frame swung up under the action of the torsion spring bars and the gas springs is pulled down against the horizontal frame by pulling on the steel cables, while the frame held by the steel cables is reversed when the motor rotates and the direction of movement of the swivel lever is released for swinging up.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend an Hand der Zeichnung erläutert, in der in schaubildlicher, nicht masstäblicher Darstellung das Prinzip der Vorrichtung gezeigt ist.An embodiment of the invention is explained below with reference to the drawing, in which the principle of the device is shown in a diagrammatic, not to scale.

Die Vorrichtung weist einen auf einer horizontalen Unterlage, insbesondere einem in der Zeichnung nicht dargestellten Bettgestell aufzuliegenden bestimmten Rahmen 1 auf, an dessen einem Rand mittels einer Drehachse 2 ein weiterer, im wesentlichen gleich grosser Rahmen 3 schwenkbeweglich befestigt ist. An jedem Rahmen 1 und 3, dessen parallel zur Drehachse 2 gemessene Breite etwa der Breite eines Bettgestells entspricht, ist an der Aussenseite eine Verkleidungsfläche 4 bzw. 5 befestigt, sodass die Vorrichtung äusserlich mit einem ganz flachen Koffer vergleichbar ist. Der Rahmen 3 mit der Fläche 5 bildet die Stützfläche, gegen die sich der kopfseitige Endbereich einer in der Zeichnung nicht dargestellten Matratze abstützt, und welche Stützfläche in beliebiger Winkellage gegenüber dem horizontalen Rahmen 1 einzustellen sein soll, was durch Betätigung eines Motors möglich sein soll.The device has a specific frame 1 to be placed on a horizontal base, in particular a bed frame (not shown in the drawing), on one edge of which a further frame 3 of substantially the same size is pivotally attached by means of an axis of rotation 2. On each frame 1 and 3, whose width measured parallel to the axis of rotation 2 corresponds approximately to the width of a bed frame, a cladding surface 4 or 5 is fastened on the outside, so that the device is externally comparable to a very flat case. The frame 3 with the surface 5 forms the support surface against which the head-side end region of a mattress (not shown in the drawing) is supported, and which support surface should be set in any angular position relative to the horizontal frame 1, which should be possible by actuating a motor.

Parallel zur Drehachse 2 erstrecken sich im unteren Rahmen 1 zwei Torsionsfederstäbe 6 und 7 nahezu über die ganze Breite des Rahmens 1 und sind dabei durch zwei Lagerklötze 8 und 9 hindurchführbar. Der in der Zeichnung vordere Torsionsfederstab 6 ist hinter dem Lagerklotz 8 um 90° abgewinkelt und sein gerades Ende ist im Lagerklotz 9 drehfest gehalten, sodass die gesamte Länge des Torsionsfederstabes sich gegenüber diesem festgehaltenen Ende verdrehen kann. Der dahinter liegende Torsionsfederstab 7 ist in der Zeichnung vor dem Lagerklotz 9 um 90° abgewinkelt und sein freies Ende ist im Lagerklotz 8 drehfest gehalten. Die abgewinkelten Enden der beiden Torsionsfederstäbe 6 und 7 sind jeweils gegen eine Rolle 10 und 11 angedrückt, die an der Innenseite auf einander gegenüberliegenden Seiten des Rahmens 3 gelagert sind. Beim Verschwenken des Rahmens 3 bewegen sich die abgewinkelten Enden der beiden Torsionsfederstäbe relativ zu den Rollen. In der in der Zeichnung dargestellten Schwenkstellung des Rahmens 3 mit einem Winkel zwischen den beiden Rahmen von ca. 70° sind die beiden Torsionsfederstäbe 6 und 7 mit einer Vorspannung entsprechend einem Drehweinkel von 50° eingebaut. Die beiden Torsionsfederstäbe wirken im Sinne einer Vergrösserung des Winkels zwischen den beiden Rahmen, wobei sie die grösste Federkraft ausüben, wenn die beiden Rahmen 1 und 3 parallel übereinander liegen.Parallel to the axis of rotation 2, two torsion spring bars 6 and 7 extend in the lower frame 1 almost over the entire width of the frame 1 and can be passed through two bearing blocks 8 and 9. The front torsion spring bar 6 in the drawing is angled by 90 ° behind the bearing block 8 and its straight end is held in the bearing block 9 in a rotationally fixed manner, so that the entire length of the torsion spring bar can twist relative to this end held in place. The torsion spring rod 7 behind it is angled by 90 ° in the drawing in front of the bearing block 9 and its free end is held in the bearing block 8 in a rotationally fixed manner. The angled ends of the two torsion spring bars 6 and 7 are each pressed against a roller 10 and 11, which are mounted on the inside on opposite sides of the frame 3. When pivoting the frame 3, the angled ends of the two torsion bars move relative to the rollers. In the pivot position of the frame 3 shown in the drawing, with an angle between the two frames of approximately 70 °, the two torsion spring bars 6 and 7 are installed with a pre-tension corresponding to a swivel angle of 50 °. The two torsion spring bars act in the sense of increasing the angle between the two frames, wherein they exert the greatest spring force when the two frames 1 and 3 lie parallel one above the other.

Zusätzlich sind zwei Gasfedern 12 und 13 an einander gegenüberliegenden Seiten der beiden Rahmen mit dem einen Ende am Rahmen 1 und mit dem jeweils anderen Ende am Rahmen 3 befestigt.In addition, two gas springs 12 and 13 are attached to opposite sides of the two frames with one end on frame 1 and the other end on frame 3.

Jede Gasfeder wirkt mit einem Druck von ca. 40 kg ebenfalls im Sinne einer Vergrösserung des Winkels zwischen den beiden Rahmen 1 und 3. Wenn die beiden Rahmen 1 und 3 parallel übereinander liegen, kann die Gasfeder nur mit einem sehr kurzen wirksamen Hebelarm auf den Rahmen 3 einwirken. Wenn von der Stellung mit parallel übereinanderliegenden Rahmen 1 und 3 ausgehend die Federkraft der beiden Torsionsfederstäbe 6 und 7 mit zunehmenden Winkel zwischen den Rahmen abnimmt, wird das von den beiden Gasfedern ausgeübte Moment auf Grund des grösser werdenden wirksamen Hebelarms zunehmend grösser, sodass zwischen den beiden Rahmen eine nur wenig schwankende Kraft im Sinne einer Vergrösserung des Winkels zwischen den Rahmen wirksam ist.Each gas spring also works with a pressure of approx. 40 kg in the sense of increasing the angle between the two frames 1 and 3. If the two frames 1 and 3 lie one above the other in parallel, the gas spring can only act on the frame with a very short effective lever arm 3 act. If, starting from the position with frames 1 and 3 lying one above the other in parallel, the spring force of the two torsion spring bars 6 and 7 decreases with increasing angle between the frames, the moment exerted by the two gas springs becomes increasingly larger due to the increasing effective lever arm, so that between the two Frame a little fluctuating force in the sense of increasing the angle between the frame is effective.

Dieser Kraft der Federn wird durch einen Seilzug entgegengewirkt, durch den die beiden Rahmen 1 und 3 gegeneinander gezogen werden. Ein erstes Stahlseil 14 ist mit einem Ende am Rahmen 3 befestigt und über eine am Rahmen 1 auf der Höhe der Gasfeder 12 drehbar gelagerte Umlenkrolle 15 geführt und anschliessend über eine weitere in der Rahmenecke des Rahmens 1 gelagerte Umlenkrolle 16 und schliesslich über eine an der Rahmenlängsseite angeordnete Umlenkrolle 12 geführt. Das andere Ende dieses Stahlseils 14 ist an einer Spannvorrichtung 18 befestigt, welche an einem Schwenkhebel 19 befestigt ist. Dieser Schwenkhebel 19 ist mittels eines Drehzapfens 20 am Rahmen 1 schwenkbar gelagert.This force of the springs is counteracted by a cable pull, through which the two frames 1 and 3 are pulled against each other. A first steel cable 14 is attached at one end to the frame 3 and guided over a deflection roller 15 which is rotatably mounted on the frame 1 at the level of the gas spring 12 and then via a further deflection roller 16 which is mounted in the corner of the frame 1 and finally via one on the longitudinal side of the frame arranged deflection roller 12 out. The other end of this steel cable 14 is attached to a tensioning device 18, which is attached to a pivot lever 19. This pivot lever 19 is pivotally mounted on the frame 1 by means of a pivot pin 20.

Ein zweites Stahlseil 21 ist mit dem einen Ende auf der gegenüberliegenden Seite des Rahmens 3 befestigt, über eine im Rahmen 1 auf der Höhe der Gasfeder 13 gelagerte Umlenkrolle 22 geführt, anschliessend über eine in der Rahmenecke des Rahmens 1 angeordnete weitere Umlenkrolle 23 und schliesslich über eine an der Rahmenlängsseite angeordnete Umlenkrolle 24 geführt, die auf der gleichen Achse wie die Umlenkrolle 17 für das andere Stahlseil 14 gela- . gert ist.A second steel cable 21 is fastened at one end on the opposite side of the frame 3, guided over a deflection roller 22 mounted in the frame 1 at the level of the gas spring 13, then via a further deflection roller 23 arranged in the frame corner of the frame 1 and finally via a pulley 24 arranged on the longitudinal side of the frame, which is loaded on the same axis as the pulley 17 for the other steel cable 14. device.

Das Ende des Stahlseils 21 ist an einer Spannvorrichtung befestigt, welche ebenfalls wie die Spannvorrichtung 18 an dem Schwenkhebel 19 befestigt ist. In der Zeichnung sind zur Verdeutlichung die Spannvorrichtungen 18 und 25 nebeneinander am Schwenkhebel 19 befestigt dargestellt, jedoch liegen in Wirklichkeit diese Befestigungsenden am Schwenkhebel übereinander, da die Stahlseile sonst ungleich gezogen würden.The end of the steel cable 21 is fastened to a tensioning device which, like the tensioning device 18, is also attached to the swivel lever 19 is attached. In the drawing, the tensioning devices 18 and 25 are shown attached to one another on the pivot lever 19 for clarification, but in reality these fastening ends lie one above the other on the pivot lever, since the steel cables would otherwise be pulled unevenly.

Der Schwenkhebel 19 wird mit Hilfe eines Hubmotors 26 in Richtung des Pfeils 27 verschwenkt, wobei durch Zug an den beiden Stahlseilen 14 und 21 der Rahmen 3 gegen die Wirkung der beiden Torsionsfederstäbe 6 und 7 und der beiden Gasfedern 12 und 13 gegen den unteren Rahmen 1 gezogen wird. In der Endlage liegen die beiden Rahmen 1 und 3 parallel übereinander. Aus dieser Endlage kann durch Betätigung des Motors 26 in Gegenrichtung der Rahmen 3 in jede gewünschte Winkellage bezüglich des Rahmens 1 gebracht werden. Der Hubmotor 26 ist mittels eines Drehzapfens 28 im Rahmen 1 schwenkbeweglich gelagert, damit der Motor die durch die Bewegung der Verbindungsstelle zwischen Motor und Schwenkhebel 19 auf einem Kreisbogen bedingte seitliche Bewegung ausführen kann. Damit ein zwischen den beiden Rahmen 1 und 3 bzw. den beiden Flächen 4 und 5 unterzubringender Hobmotor einen möglichst kleinen Durchmesser hat, ist ein Motor gewählt, der in Bezug auf die erforderliche Kraft etwas zu schwach ist und deshalb durch eine Gasfeder 29 unterstützt wird, die zum Motor 26 parallel geschaltet mit dem einen Ende ebenfalls am Schwenkhebel 19 und mit dem anderen Ende am Rahmen 1 angelenkt ist und auf den Schwenkhebel eine Kraft in der Bewungsrichtung ausübt, die zu einer Verkleinerung des Winkels zwischen den Rahmen führt.The pivot lever 19 is pivoted with the aid of a lifting motor 26 in the direction of the arrow 27, the frame 3 against the action of the two torsion spring bars 6 and 7 and the two gas springs 12 and 13 against the lower frame 1 by pulling the two steel cables 14 and 21 is pulled. In the end position, the two frames 1 and 3 lie one above the other in parallel. From this end position, the frame 3 can be brought into any desired angular position with respect to the frame 1 by actuating the motor 26 in the opposite direction. The lifting motor 26 is pivotally mounted in the frame 1 by means of a pivot pin 28 so that the motor can carry out the lateral movement caused by the movement of the connection point between the motor and the pivot lever 19 on a circular arc. So that a hob motor to be accommodated between the two frames 1 and 3 or the two surfaces 4 and 5 has the smallest possible diameter, a motor is selected which is somewhat too weak in relation to the required force and is therefore supported by a gas spring 29. which is connected in parallel to the motor 26 with one end likewise pivoted on the pivot lever 19 and with the other end on the frame 1 and exerts a force in the direction of movement on the pivot lever, which leads to a reduction in the angle between the frames.

Um die Vorrichtung in Betrieb zu setzen, wird der Hubmotor 26 über ein Kabel 30 an das Stromnetz angeschlossen. Durch Betätigung eines Schalters 31 lässt sich die Bewegungsrichtung des Hubmotors umkehren.In order to put the device into operation, the lifting motor 26 is connected to the mains via a cable 30. The direction of movement of the lifting motor can be reversed by actuating a switch 31.

Claims (6)

1. An apparatus for setting the angular position of a pivotable support surface, in particular the support surface of the head end of the mattress in a bed frame, characterized in that two frames (1, 3), which are pivotably connected together at one edge by means of a hinge pin (2) and one (1) of which is intended to lie horizontally on an underlay and the other of which forms the prop surface which can be set at a variable angular position relative to the horizontal, are pressed apart so as to increase the angle under the action of at least one torsion bar (6, 7) which is disposed in the region of the hinge pin (2) and is active between the two frames and at least one pneumatic spring (12, 13) supported between the two frames, and the two frames (1, 3) are connected together by flexible traction means (14, 21) by means of which, in order to vary the angle continuously, the frames (1, 3) can be drawn towards one another against the action of the torsion bar and the gas spring with the aid of a driving means (19, 26) disposed on one frame and acting on the traction means and can be pivoted apart under the action of the torsion bar and gas spring.
2. An apparatus according to Claim 1, characterized in that two torsion bars (6, 7) arranged parallel to one another and to the hinge pin (2) are secured at one end in each case on mutually opposite sides of the one frame (1) and are pressed at another end angled in each case against rolling elements (10, 11) disposed on mutually opposite sides of the other frame (3).
3. An apparatus according to Claim 1, characterized in that two gas springs (12, 13) are supported in an articulated manner at one of their ends on mutually opposite sides of the one frame (1) and at their other ends on mutually opposite sides of the other frame (3) in each case.
4. An apparatus according to Claims 2 and 3, characterized in that one angled torsion bar end (6, 7) and one gas spring (12, 13) are disposed in each case with respect to one another on the same side of the frame in such a way that, as the spring force of the prestressed torsion bar decreases while the angle between the frames (1, 3) increases, there is an increase in the moment exerted by the gas spring upon the frame so as to increase the angle.
5. An apparatus according to Claim 1, characterized in that a respective steel cord (14, 21) is secured as a flexible traction means to the one frame (3) on mutually opposite sides and the cords are guided by way of the deflexion rollers (15, 16, 17, 22, 23, 24) disposed on the other frame (1) and are secured at the other ends in each case parallel and adjacent to a pivoting lever (19), which is mounted in the other frame (1) and which is pivotable by a jack motor (26) disposed in the other frame (1) by means of a threaded spindle articulated on the pivoting lever (19).
6. An apparatus according to Claim 5, characterized in that a gas spring (29) assisting the action of the jack motor (26) is articulated on the pivoting lever (19) and its other end is supported on the frame (1) bearing the pivoting lever, and the moment exerted by the gas spring (29) and the jack motor (26) together upon the pivoting lever (19) is greater in any angular position of the pivotable frame (3) than the moment exerted by the torsion bars (6, 7) and gas springs (12, 14) disposed in the vicinity of the hinge pin upon the pivoted lever (19) by way of the steel cords (14, 21).
EP82902435A 1981-09-09 1982-08-25 Device for adjusting the angular position of a pivoting support surface Expired EP0087430B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82902435T ATE20638T1 (en) 1981-09-09 1982-08-25 DEVICE FOR ADJUSTING THE ANGLE POSITION OF A PIVOTABLE SUPPORT SURFACE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5816/81A CH651739A5 (en) 1981-09-09 1981-09-09 DEVICE FOR ADJUSTING THE ANGLE POSITION OF A PIVOTING SUPPORT AREA.
CH5816/81 1981-09-09

Publications (2)

Publication Number Publication Date
EP0087430A1 EP0087430A1 (en) 1983-09-07
EP0087430B1 true EP0087430B1 (en) 1986-07-09

Family

ID=4299771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82902435A Expired EP0087430B1 (en) 1981-09-09 1982-08-25 Device for adjusting the angular position of a pivoting support surface

Country Status (9)

Country Link
US (1) US4458370A (en)
EP (1) EP0087430B1 (en)
JP (1) JPS58501410A (en)
AU (1) AU8768282A (en)
CA (1) CA1196751A (en)
CH (1) CH651739A5 (en)
DE (1) DE3271936D1 (en)
IT (1) IT1155235B (en)
WO (1) WO1983000805A1 (en)

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FR2607000B1 (en) * 1986-11-26 1989-03-31 Heyward Bernard DEVICE FOR EFFICIENTLY MODIFYING THE POSITIONING OF FURNITURE FOR SICK OR HANDICAPPED PEOPLE WITH A PRE-CALIBRATION OF THE SYSTEM
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US5433320A (en) * 1992-10-06 1995-07-18 Daouk; Antar Container intended in particular for the transporting of loads to be handled with care
FR2725887B1 (en) * 1994-10-25 1997-01-03 Neige Jean Francois MATTRESS LIFTING DEVICE
GB2305851B (en) * 1995-09-13 1999-09-08 Nesbit Evans Limited Improvements relating to backrests
US5926876A (en) * 1996-11-19 1999-07-27 Compacta International, Ltd. Surgical operating table accessory for shoulder procedures
US5921627A (en) * 1998-09-21 1999-07-13 Risetter; Ronald D. Automatic hunter's prop
DE59904667D1 (en) * 1998-11-16 2003-04-24 Heinz Leiber ELECTROMAGNETIC DRIVE
US6212712B1 (en) * 1999-04-20 2001-04-10 Richard Hardy Topp Mobile stretcher with lateral recumbant mechanism
US7313836B1 (en) * 2006-10-06 2008-01-01 Swezey Robert L Free-standing reclining bed lounge
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AU2010201432B2 (en) * 2009-04-17 2015-01-22 Maxi-Care Promotions Pty. Ltd. Pedestal end for patients bed
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Also Published As

Publication number Publication date
AU8768282A (en) 1983-03-28
IT8249089A1 (en) 1984-03-08
JPH038204B2 (en) 1991-02-05
DE3271936D1 (en) 1986-08-14
US4458370A (en) 1984-07-10
EP0087430A1 (en) 1983-09-07
IT8249089A0 (en) 1982-09-08
CH651739A5 (en) 1985-10-15
JPS58501410A (en) 1983-08-25
WO1983000805A1 (en) 1983-03-17
CA1196751A (en) 1985-11-19
IT1155235B (en) 1987-01-21

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