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EP0487061B1 - Device for transfering patients - Google Patents

Device for transfering patients Download PDF

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Publication number
EP0487061B1
EP0487061B1 EP91119781A EP91119781A EP0487061B1 EP 0487061 B1 EP0487061 B1 EP 0487061B1 EP 91119781 A EP91119781 A EP 91119781A EP 91119781 A EP91119781 A EP 91119781A EP 0487061 B1 EP0487061 B1 EP 0487061B1
Authority
EP
European Patent Office
Prior art keywords
platform
winding
frame
drive mechanism
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91119781A
Other languages
German (de)
French (fr)
Other versions
EP0487061A1 (en
Inventor
Carl-Christian Bastert
Armin Helgert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stierlen Maquet AG
Original Assignee
Stierlen Maquet AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from EP90122343A external-priority patent/EP0430084B1/en
Application filed by Stierlen Maquet AG filed Critical Stierlen Maquet AG
Publication of EP0487061A1 publication Critical patent/EP0487061A1/en
Application granted granted Critical
Publication of EP0487061B1 publication Critical patent/EP0487061B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1013—Lifting of patients by
    • A61G7/1019—Vertical extending columns or mechanisms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1025—Lateral movement of patients, e.g. horizontal transfer
    • A61G7/1032—Endless belts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/104—Devices carried or supported by
    • A61G7/1046—Mobile bases, e.g. having wheels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1049—Attachment, suspending or supporting means for patients
    • A61G7/1057—Supported platforms, frames or sheets for patient in lying position
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2200/00—Information related to the kind of patient or his position
    • A61G2200/30—Specific positions of the patient
    • A61G2200/32—Specific positions of the patient lying
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18568—Reciprocating or oscillating to or from alternating rotary
    • Y10T74/18832—Reciprocating or oscillating to or from alternating rotary including flexible drive connector [e.g., belt, chain, strand, etc.]
    • Y10T74/18848—Reciprocating or oscillating to or from alternating rotary including flexible drive connector [e.g., belt, chain, strand, etc.] with pulley

Definitions

  • the invention relates to a device for transferring patients with a mobile frame mounted on rollers, a cantilevered platform and a conveyor belt that is adjustable in both directions by means of a drive device and starting from a first winding roller mounted in the frame over the top of the platform , around the free longitudinal edge and along the underside of the platform can be wound onto a second winding roller mounted in the frame.
  • the invention has for its object to provide a device of the type mentioned, in which even with a simple drive device can be avoided that the tape slackens and folds when changing the winding direction.
  • This object is achieved in that the two winding rollers are constantly coupled to the drive device and that a rotational play is provided between the winding rollers and the drive device.
  • the rotational play enables a relative movement between the respective take-up roller and the drive device, so that the tape-dispensing roller is not forcibly driven, but can be towed again.
  • the drive device runs through the rotational play and forcibly drives the previously dragged roller.
  • the rotational play must of course be dimensioned so that the length difference between the tape take-up on the empty take-up reel and the tape delivery can be absorbed by the full take-up reel.
  • the winding rollers are each rotatably mounted on a shaft, the shafts being coupled to the drive device and the angle of rotation of the respective winding roller relative to its shaft being limited by stops.
  • the tensioning of the belt can be further improved if each of the winding rollers is biased in its winding direction.
  • a spring for generating the pretension can be arranged between the respective take-up roller and its shaft.
  • the solution described above uses only one band, and only one drive device is required to drive one of the two winding rollers during winding or unwinding.
  • the solution according to the invention can achieve the same advantages which are otherwise usually only achieved with two separate belts or platforms.
  • the tape guide according to the invention ensures that the lower run of the tape coming to rest on the patient bed or bed sheet and the upper run of the tape running over the top of the platform, which is intended to accommodate the patient, always move in the same direction, regardless of the direction of travel of the tape.
  • the disadvantage described above can thus be reliably avoided.
  • the platform can be inserted with little resistance between the patient and the bed sheet due to the belt movements of the lower run and the upper run, the bed sheet not being displaced by the friction on the belt lower run.
  • the deflection edge is preferably formed by a strip which dips into a recess on the underside of the platform and is connected to the platform. In this way, the entire arrangement is only slightly thicker than the platform itself.
  • the platform itself can be arranged height-adjustable on the frame, so that it can be adjusted to different bed heights.
  • a handle bar extending parallel to the platform is attached to the frame on the side remote from the platform.
  • the invention provides that the operating elements for the drive control are arranged in the handle bar.
  • two winding rollers 26 and 28 are rotatably mounted, which are connected via a chain drive, not shown, to a drive device 30, which is only schematically indicated in FIG.
  • This can be controlled via an operating keyboard 32 which is arranged in a handle bar 35 running on the rear of the converter parallel to the longitudinal direction of the platform 20, so that it can be operated comfortably by the operator.
  • the one band end is connected to the upper take-up roller 26 and is guided from the latter over the upper side 34 of the platform 20, around the free edge 36 of the platform 20 to the underside 38 of the platform.
  • the belt runs back to the columns 18 and, starting from the frame-side end of the platform 20, is guided around the second winding roller 28 again in the direction of the free platform edge 36.
  • Deflection strip 40 which runs parallel to the free platform edge 36 and is fastened to the platform 20 at its longitudinal ends by means of bolts 42 (FIG. 2).
  • the conveyor belt 44 is now guided around this deflection strip 40 back to the second winding roller 28, where it runs onto the latter in the winding direction opposite to the winding roller 26.
  • the conveyor belt 44 is driven to accommodate a patient in the direction indicated by the arrows, it being sufficient to drive the winding roller 26, it can be seen that the lower run 46 and the upper run 48 of the transport belt move in the same direction as those in contact with one another Intermediate sections 50 and 52 of the conveyor belt. If the direction of rotation is reversed, the same circulation conditions only result in the opposite direction. If the platform is inserted between the patient and the bed sheet at a suitable speed when the patient is being taken in, there is no relative movement between the conveyor belt and the bed sheet, so that this is not shifted. The platform can be inserted under the patient without any great resistance. The same conditions only arise in the opposite direction of rotation when the patient is placed down.
  • FIG. 1 in FIG. 1 denotes a securing bracket which can be folded up to accommodate a patient and which serves to prevent the patient from falling off the platform.
  • the bracket is not shown in Figure 2.
  • FIGS. 4 to 6 show, similarly to FIG. 3, the two winding rollers 26 and 28. These are formed by hollow cylinders, each on a shaft 56 or 58 are freely rotatable. A radial extension 60 is connected to each of the shafts and engages in a sector-shaped cutout 62 in the respective winding roller 26 or 28. The angular range over which the sector-shaped cutout 62 extends determines a rotational play between the respective winding roller 26 or 28 and its shaft 56 or 58.
  • Each of the shafts 56, 58 is rotatably connected to a sprocket wheel 64 (FIG. 6) and 66 and is driven by a chain 68 which runs over a sprocket wheel 70 which in turn is connected in a rotationally fixed manner to the drive shaft 72 of a drive device (not shown) is.
  • each of the winding rollers 26, 28 is biased in its winding direction by a schematically indicated spring 74.
  • a schematically indicated spring 74 for the winding roller 26, this is the direction of rotation in the clockwise direction and for the winding roller 28, this is the direction of rotation in the counterclockwise direction.
  • Any suitable spring for example a torsion spring, can also be selected to generate this preload. However, this spring is not absolutely necessary, as the embodiment of FIGS. 4 and 5 shows.
  • This arrangement has the following task. Assume that the tape is rolled up on one of the take-up rollers. Then the diameter of this winding roller including the tape roll is larger than the diameter of the other winding roller. If the winding direction is now reversed, if the two shafts 56, 58 are driven synchronously and in the same direction, the tape take-up on the winding roller would be less than the tape delivery on the reel dispenser. This would cause the tape to sag or wrinkle between the two take-up rollers and then be easily damaged. This is avoided by the solution according to the invention.
  • Fig. 4 shows the winding rollers 26, 28 and shafts 56, 58 in their assembly and starting position. If the band 44 is wound onto the left roller 26, the right roller 28 is dragged despite the synchronous drive of the shaft 58 because of the rotational play between the shaft 58 and the roller 28. The band remains taut. 5 the same process takes place in the opposite direction.
  • the spring arranged between the respective take-up roller and its associated shaft due to the rotational play present, causes the take-up roller to always be pretensioned in the take-up direction. If the turning play is large enough, sagging or folding of the tape can be avoided.

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  • Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Invalid Beds And Related Equipment (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Verlagern von Patienten mit einem auf Rollen gelagerten fahrbaren Gestell, einer an diesem freitragend angeordneten Plattform und einem Transportband, das mittels einer Antriebsvorrichtung in beiden Richtungen verstellbar ist und ausgehend von einer ersten im Gestell gelagerten Aufwickelwalze über die Oberseite der Plattform, um deren freie Längskante herum und entlang der Plattformunterseite auf eine zweite im Gestell gelagerte Aufwickelwalze aufwickelbar ist.The invention relates to a device for transferring patients with a mobile frame mounted on rollers, a cantilevered platform and a conveyor belt that is adjustable in both directions by means of a drive device and starting from a first winding roller mounted in the frame over the top of the platform , around the free longitudinal edge and along the underside of the platform can be wound onto a second winding roller mounted in the frame.

Eine solche Vorrichtung ist in der FR-A-2.084.018 beschrieben.Such a device is described in FR-A-2.084.018.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art anzugeben, bei der auch mit einer einfachen Antriebseinrichtung vermieden werden kann, daß das Band beim Wechsel der Aufwickelrichtung schlaff wird und Falten schlägt.The invention has for its object to provide a device of the type mentioned, in which even with a simple drive device can be avoided that the tape slackens and folds when changing the winding direction.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß beide Aufwickelwalzen ständig mit der Antriebseinrichtung gekoppelt sind und daß zwischen den Aufwickelwalzen und der Antriebseinrichtung jeweils ein Drehspiel vorgesehen ist.This object is achieved in that the two winding rollers are constantly coupled to the drive device and that a rotational play is provided between the winding rollers and the drive device.

Das Drehspiel ermöglicht eine Relativbewegung zwischen der jeweiligen Aufwickelwalze und der Antriebseinrichtung, so daß die bandabgebende Walze nicht zwangsweise angetrieben wird, sondern wieder geschleppt werden kann. Beim Richtungswechsel durchläuft dann die Antriebseinrichtung das Drehspiel und treibt die vorher geschleppte Walze zwangsweise an . Das Drehspiel muß dabei natürlich so bemessen werden, daß auch die Längendifferenz zwischen der Bandaufnahme auf die leere Aufwickelspule und der Bandabgabe von der vollen Aufwickelspule aufgefangen werden kann.The rotational play enables a relative movement between the respective take-up roller and the drive device, so that the tape-dispensing roller is not forcibly driven, but can be towed again. When changing direction, the drive device then runs through the rotational play and forcibly drives the previously dragged roller. The rotational play must of course be dimensioned so that the length difference between the tape take-up on the empty take-up reel and the tape delivery can be absorbed by the full take-up reel.

Gemäß einer bevorzugten Ausführungsform, die einfach zu realisieren ist, sind die Aufwickelwalzen jeweils auf einer Welle drehbar gelagert, wobei die Wellen mit der Antriebseinrichtung gekoppelt sind und der Drehwinkel der jeweiligen Aufwickelwalze gegenüber ihrer Welle durch Anschläge begrenzt ist. Die Straffung des Bandes kann noch verbessert werden, wenn jede der Aufwickelwalzen in ihre Aufwickelrichtung vorgespannt ist. Dabei kann zwischen der jeweiligen Aufwickelwalze und ihrer Welle eine Feder zur Erzeugung der Vorspannung angeordnet sein.According to a preferred embodiment, which is easy to implement, the winding rollers are each rotatably mounted on a shaft, the shafts being coupled to the drive device and the angle of rotation of the respective winding roller relative to its shaft being limited by stops. The tensioning of the belt can be further improved if each of the winding rollers is biased in its winding direction. A spring for generating the pretension can be arranged between the respective take-up roller and its shaft.

Bei einer aus dem deutschen Gebrauchsmuster DE-U-87 04 343 bekannten Vorrichtung zum Verlagern von Patienten wird die Plattform relativ zum Gestell bewegt, wobei das Band entweder zusammen mit der Plattform oder relativ zu dieser bewegt werden kann. Nachteilig bei allen Ausführungsformen von derartigen Vorrichtungen, sogenannten Umbettern, mit nur einem Transportband ist, daß beim Unterschieben der Plattform unter den Patienten und gleichzeitiger Aufnahme des Patienten auf die Plattform das über die Unterseite der Plattform laufende Bandteil am Bettlaken reibt und dieses verschiebt. Dieses erschwert eine reibungslose Aufnahme des Patienten auf die Plattform. Während der Ablage des Patienten auf das Bett ergibt sich der umgekehrte Vorgang. Es sind bereits Umbetter bekannt, die zwei übereinander liegende Plattformen verwenden, über die jeweils ein Band läuft. Durch geeignete Steuerung der beiden Bänder kann der oben beschriebene Nachteil vermieden werden. Allerdings ist diese Lösung relativ aufwendig und kompliziert sowohl hinsichtlich des mechanischen Aufwandes als auch hinsichtlich der Steuerung.In a device for moving patients known from German utility model DE-U-87 04 343, the platform is moved relative to the frame, the belt being able to be moved either together with the platform or relative to it. A disadvantage of all embodiments of such devices, so-called Umbetetten, with only one conveyor belt is that when the platform is pushed under the patient and the patient is simultaneously taken up on the platform, the belt part running over the underside of the platform rubs against the bed sheet and moves it. This makes it difficult for the patient to be taken on the platform smoothly. The reverse process occurs when the patient is placed on the bed. Umbetter are already known that use two superimposed platforms, each of which runs a belt. The disadvantage described above can be avoided by suitable control of the two bands. However, this solution is relatively complex and complicated both in terms of mechanical effort and in terms of control.

Bei der erfindungsgemäßen Lösung wird daher vorgeschlagen, daß das Transportband von der Plattformunterseite um die zweite Aufwickelwalze herum zu einer nahe dem freien Längsrand der Plattform unterhalb derselben angeordneten Umlenkkante und um diese herum zur zweiten Aufwickelwalze zurückgeführt ist und daß die Bandenden so auf die Aufwickelwalzen auflaufen, daß sich diese beim Auf- und Abwickeln jeweils gleichsinnig drehen.In the solution according to the invention it is therefore proposed that the conveyor belt from the underside of the platform around the second take-up roller to a deflection edge arranged near the free longitudinal edge of the platform below it and around it to the second take-up roller and that the ends of the tape run onto the take-up rollers so that they each rotate in the same direction during winding and unwinding.

Die vorstehend beschriebene Lösung verwendet nur ein Band, wobei auch nur eine Antriebsvorrichtung zum Antrieb einer der beiden Aufwickelwalzen beim Aufwickeln bzw. Abwickeln erforderlich ist. Trotz dieser konstruktiv und steuerungstechnisch einfacheren Lösung lassen sich mit der erfindungsgemäßen Lösung die gleichen Vorteile erreichen, die sonst nur üblicherweise mit zwei getrennten Bändern bzw. Plattformen erreicht werden. Durch die erfindungsgemäße Bandführung wird erreicht, daß sich das zur Auflage auf dem Patientenbett oder Bettlaken kommende Untertrumm des Bandes und das über die Oberseite der Plattform laufende Obertrumm des Bandes, das den Patienten aufnehmen soll, unabhängig von der Laufrichtung des Bandes stets gleichsinnig bewegen. Damit läßt sich der oben beschriebene Nachteil zuverlässig vermeiden. Die Plattform läßt sich aufgrund der Bandbewegungen des Untertrumms und des Obertrumms mit nur geringem Widerstand zwischen den Patienten und das Bettlaken einschieben, wobei das Bettlaken nicht durch die Reibung an dem Banduntertrumm verschoben wird.The solution described above uses only one band, and only one drive device is required to drive one of the two winding rollers during winding or unwinding. Despite this solution, which is simpler in terms of construction and control technology, the solution according to the invention can achieve the same advantages which are otherwise usually only achieved with two separate belts or platforms. The tape guide according to the invention ensures that the lower run of the tape coming to rest on the patient bed or bed sheet and the upper run of the tape running over the top of the platform, which is intended to accommodate the patient, always move in the same direction, regardless of the direction of travel of the tape. The disadvantage described above can thus be reliably avoided. The platform can be inserted with little resistance between the patient and the bed sheet due to the belt movements of the lower run and the upper run, the bed sheet not being displaced by the friction on the belt lower run.

Um die Plattform einschließlich der Bänder möglichst flach zu halten, ist die Umlenkkante vorzugsweise von einer Leiste gebildet, die in eine Aussparung an der Unterseite der Plattform eintaucht und mit der Plattform verbunden ist. Auf diese Weise ist die gesamte Anordnung nur unwesentlich dicker als die Plattform selber.In order to keep the platform, including the straps, as flat as possible, the deflection edge is preferably formed by a strip which dips into a recess on the underside of the platform and is connected to the platform. In this way, the entire arrangement is only slightly thicker than the platform itself.

Die Plattform selbst kann höhenverstellbar an dem Gestell angeordnet sein, so daß sie auf verschiedene Betthöhen einstellbar ist.The platform itself can be arranged height-adjustable on the frame, so that it can be adjusted to different bed heights.

Zum Verschieben des Umbetters ist an dem Gestell auf der der Plattform fernen Seite eine sich parallel zu dieser erstreckende Griffstange befestigt. Zur Erleichterung der Bedienung ist erfindungsgemäß vorgesehen, daß die Bedienungselemente für die Antriebssteuerung in der Griffstange angeordnet sind.To move the converter, a handle bar extending parallel to the platform is attached to the frame on the side remote from the platform. To facilitate operation, the invention provides that the operating elements for the drive control are arranged in the handle bar.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der folgenden Beschreibung, welche in Verbindung mit den beigefügten Zeichnungen die Erfindung anhand eines Ausführungsbeispieles erläutert. Es zeigen:

Fig. 1
eine perspektivische Gesamtansicht der erfindungsgemäßen Vorrichtung,
Fig. 2
eine Seitenansicht der Vorrichtung in Richtung des Pfeiles A in Fig. 1 und
Fig. 3
ein Antriebs- und Bandführungsschema zur Erläuterung der Funktion der erfindungsgemäßen Vorrichtung
Fig. 4 und 5
jeweils eine schematische Darstellung der Aufwickelwalzen allein in zwei verschiedenen Wickelzuständen, und
Fig. 6
eine schematische Seitenschnittansicht der Aufwickelwalzen und einer Antriebswalze
Der in den Figuren 1 und 2 dargestellte mobile Umbetter zum Transport und zur Verlagerung von Patienten umfaßt ein allgemein mit 10 bezeichnetes Gestell mit zwei kurzen horizontalen Querholmen 12 und einem sie verbindenden Längsholm 14, die jeweils auf Rollen 16 gelagert sind. An den Verbindungsstellen der Querholme 12 mit dem Längsholm 14 sind vertikale Säulen 18 angeordnet, an denen eine allgemein mit 20 bezeichnete Plattform zur Aufnahme und zum Transport eines Patienten freitragend und höhenverstellbar angeordnet ist. Dabei istdie Plattform 20 an einem an den Säulen 18 vertikal verstellbar geführten, einen Längsträger 22 und zwei Querträger 24 umfassenden Rahmen befestigt. Da die Höhenverstellung der Plattform 20 in an sich bekannter Weise auf eine beliebige Art erfolgen kann, wird sie hier nicht näher beschrieben.Further features and advantages of the invention will become apparent from the following description, which in connection with the accompanying drawings explains the invention using an exemplary embodiment. Show it:
Fig. 1
an overall perspective view of the device according to the invention,
Fig. 2
a side view of the device in the direction of arrow A in Fig. 1 and
Fig. 3
a drive and tape guide diagram to explain the function of the device according to the invention
4 and 5
each a schematic representation of the winding rollers alone in two different winding states, and
Fig. 6
is a schematic side sectional view of the winding rollers and a drive roller
The mobile Umbetter shown in Figures 1 and 2 for the transport and transfer of patients includes a frame generally designated 10 with two short horizontal cross bars 12 and a longitudinal bar 14 connecting them, each of which is mounted on rollers 16. At the junctures of the cross bars 12 with the longitudinal bar 14, vertical columns 18 are arranged, on which a platform, generally designated 20, for accommodating and transporting a patient is arranged in a self-supporting and height-adjustable manner. The platform 20 is fastened to a frame which is vertically adjustable on the columns 18 and comprises a longitudinal beam 22 and two cross beams 24. Since the height adjustment of the platform 20 can be carried out in any way in a manner known per se, it is not described in more detail here.

Innerhalb der Säulen 18 und des Längsträgers 22 sind zwei Aufwickelwalzen 26 und 28 drehbar gelagert, die über einen nicht dargestellten Kettentrieb mit einer in Figur 3 nur schematisch angedeuteten Antriebsvorrichtung 30 verbunden sind. Diese ist über eine Bedienungstastatur 32 steuerbar, die in einer auf der Rückseite des Umbetters parallel zur Längsrichtung der Plattform 20 verlaufenden Griffstange 35 angeordnet ist, so daß sie von der Bedienungsperson bequem bedient werden kann.Within the columns 18 and the longitudinal beam 22, two winding rollers 26 and 28 are rotatably mounted, which are connected via a chain drive, not shown, to a drive device 30, which is only schematically indicated in FIG. This can be controlled via an operating keyboard 32 which is arranged in a handle bar 35 running on the rear of the converter parallel to the longitudinal direction of the platform 20, so that it can be operated comfortably by the operator.

Gemäß der Darstellung in Figur 3 ist das eine Bandende mit der oberen Aufwickelwalze 26 verbunden und von dieser über die Oberseite 34 der Plattform 20, um die freie Randkante 36 der Plattform 20 herum zur Plattformunterseite 38 geführt. Von hier aus verläuft das Band zu den Säulen 18 zurück und ist ausgehend vom gestellseitigen Ende der Plattform 20 um die zweite Aufwickelwalze 28 herum wieder in Richtung auf den freien Plattformrand 36 geführt. Nahe dem freien Plattformrand 36 und unterhalb der Plattform 20 befindet sich eine Umlenkleiste 40, die parallel zum freien Plattformrand 36 verläuft und an ihren Längsenden mithilfe von Bolzen 42 (Figur 2) an der Plattform 20 befestigt ist. Das Transportband 44 ist um diese Umlenkleiste 40 herum nun zurück zur zweiten Aufwickelwalze 28 geführt, wobei es auf diese in der zur Aufwickelwalze 26 entgegengesetzten Aufwickelrichtung aufläuft.According to the illustration in FIG. 3, the one band end is connected to the upper take-up roller 26 and is guided from the latter over the upper side 34 of the platform 20, around the free edge 36 of the platform 20 to the underside 38 of the platform. From here, the belt runs back to the columns 18 and, starting from the frame-side end of the platform 20, is guided around the second winding roller 28 again in the direction of the free platform edge 36. There is one near the free platform edge 36 and below the platform 20 Deflection strip 40, which runs parallel to the free platform edge 36 and is fastened to the platform 20 at its longitudinal ends by means of bolts 42 (FIG. 2). The conveyor belt 44 is now guided around this deflection strip 40 back to the second winding roller 28, where it runs onto the latter in the winding direction opposite to the winding roller 26.

Wird das Transportband 44 zur Aufnahme eines Patienten in der durch die Pfeile angegebenen Richtung angetrieben, wobei es genügt, die Aufwickelwalze 26 anzutreiben, so erkennt man, daß sich das Untertrumm 46 und das Obertrumm 48 des Transportbandes gleichsinnig bewegen ebenso wie die miteinander in Berührung stehenden Zwischenabschnitte 50 und 52 des Transportbandes. Wird die Drehrichtung umgekehrt, so ergeben sich gleiche Umlaufverhältnisse nur in der entgegengesetzten Richtung. Wird bei der Aufnahme des Patienten die Plattform zwischen den Patienten und das Bettlaken mit einer geeigneten Geschwindigkeit eingeschoben, so findet keine Relativbewegung zwischen dem Transportband und dem Bettlaken statt, so daß dieses nicht verschoben wird. Die Plattform läßt sich ohne größeren Widerstand unter den Patienten einschieben. Die gleichen Verhältnisse ergeben sich nur in umgekehrter Drehrichtung bei der Ablage des Patienten.If the conveyor belt 44 is driven to accommodate a patient in the direction indicated by the arrows, it being sufficient to drive the winding roller 26, it can be seen that the lower run 46 and the upper run 48 of the transport belt move in the same direction as those in contact with one another Intermediate sections 50 and 52 of the conveyor belt. If the direction of rotation is reversed, the same circulation conditions only result in the opposite direction. If the platform is inserted between the patient and the bed sheet at a suitable speed when the patient is being taken in, there is no relative movement between the conveyor belt and the bed sheet, so that this is not shifted. The platform can be inserted under the patient without any great resistance. The same conditions only arise in the opposite direction of rotation when the patient is placed down.

Mit 54 ist in Figur 1 ein Sicherungsbügel bezeichnet, der zur Aufnahme eines Patienten hochgeklappt werden kann und dazu dient, das Herunterfallen des Patienten von der Plattform zu verhindern. Der Bügel ist in Figur 2 nicht dargestellt.1 in FIG. 1 denotes a securing bracket which can be folded up to accommodate a patient and which serves to prevent the patient from falling off the platform. The bracket is not shown in Figure 2.

In den Figuren 4 bis 6 erkennt man ähnlich wie in Figur 3 die beiden Aufwickelwalzen 26 und 28. Diese sind von Hohlzylindern gebildet, die jeweils auf einer Welle 56 bzw. 58 frei drehbar gelagert sind. Mit jeder der Wellen ist ein radialer Fortsatz 60 verbunden, der jeweils in einen sektorförmigen Ausschnitt 62 in der jeweiligen Aufwickelwalze 26 bzw. 28 eingreift. Der Winkelbereich, über den sich der sektorförmige Ausschnitt 62 erstreckt, bestimmt ein Drehspiel zwischen der jeweiligen Aufwickelwalze 26 bzw. 28 und ihrer Welle 56 bzw. 58.FIGS. 4 to 6 show, similarly to FIG. 3, the two winding rollers 26 and 28. These are formed by hollow cylinders, each on a shaft 56 or 58 are freely rotatable. A radial extension 60 is connected to each of the shafts and engages in a sector-shaped cutout 62 in the respective winding roller 26 or 28. The angular range over which the sector-shaped cutout 62 extends determines a rotational play between the respective winding roller 26 or 28 and its shaft 56 or 58.

Jede der Wellen 56, 58 ist mit einem Kettenzahnrad 64 (Fig. 6) bzw. 66 drehfest verbunden und wird über eine Kette 68 angetrieben, die über ein Kettenzahnrad 70 läuft, das seinerseits mit der Antriebswelle 72 einer im übrigen nicht dargestellten Antriebseinrichtung drehfest verbunden ist.Each of the shafts 56, 58 is rotatably connected to a sprocket wheel 64 (FIG. 6) and 66 and is driven by a chain 68 which runs over a sprocket wheel 70 which in turn is connected in a rotationally fixed manner to the drive shaft 72 of a drive device (not shown) is.

Bei der speziellen Ausführungsform in Fig. 6 ist jede der Aufwickelwalzen 26, 28 durch eine schematisch angedeutete Feder 74 in ihre Aufwickelrichtung vorgespannt. Für die Aufwickelwalze 26 ist dies die Drehrichtung im Uhrzeigersinn und für die Aufwickelwalze 28 ist dies die Drehrichtung gegen den Uhrzeigersinn. Für die Erzeugung dieser Vorspannung kann jede geeignete Feder auch beispielsweise eine Torsionsfeder gewählt werden. Diese Feder ist jedoch nicht unbedingt erforderlich, wie das Ausführungsbeispiel der Fig. 4 und 5 zeigt.In the special embodiment in FIG. 6, each of the winding rollers 26, 28 is biased in its winding direction by a schematically indicated spring 74. For the winding roller 26, this is the direction of rotation in the clockwise direction and for the winding roller 28, this is the direction of rotation in the counterclockwise direction. Any suitable spring, for example a torsion spring, can also be selected to generate this preload. However, this spring is not absolutely necessary, as the embodiment of FIGS. 4 and 5 shows.

Diese Anordnung hat folgende Aufgabe. Angenommen, das Band sei auf eine der Aufwickelwalzen aufgerollt. Dann ist der Durchmesser dieser Aufwickelwalze einschließlich des Bandwickels größer als der Durchmesser der anderen Aufwickelwalze. Wenn nun die Aufwickelrichtung umgekehrt wird, wäre bei synchronem und gleichsinnigem Antrieb der beiden Wellen 56, 58 die Bandaufnahme auf der aufwickelnden Walze geringer als die Bandabgabe an der bandabgebenden Walze. Dies würde dazu führen, daß das Band zwischen den beiden Aufwickelwalzen durchhängt oder Falten schlägt und dann leicht beschädigt werden kann. Dies wird durch die erfindungsgemäße Lösung vermieden.This arrangement has the following task. Assume that the tape is rolled up on one of the take-up rollers. Then the diameter of this winding roller including the tape roll is larger than the diameter of the other winding roller. If the winding direction is now reversed, if the two shafts 56, 58 are driven synchronously and in the same direction, the tape take-up on the winding roller would be less than the tape delivery on the reel dispenser. This would cause the tape to sag or wrinkle between the two take-up rollers and then be easily damaged. This is avoided by the solution according to the invention.

Fig. 4 zeigt die Aufwickelwalzen 26, 28 und Wellen 56, 58 in ihrer Montage- und Ausgangsstellung. Wird das Band 44 auf die linke Walze 26 aufgewickelt, so wird die rechte Walze 28 trotz des synchronen Antriebs der Welle 58 geschleppt wegen des zwischen Welle 58 und Walze 28 vorhandenen Drehspiels. Das Band bleibt straff. In Fig. 5 läuft der gleiche Vorgang in umgekehrter Richtung ab.Fig. 4 shows the winding rollers 26, 28 and shafts 56, 58 in their assembly and starting position. If the band 44 is wound onto the left roller 26, the right roller 28 is dragged despite the synchronous drive of the shaft 58 because of the rotational play between the shaft 58 and the roller 28. The band remains taut. 5 the same process takes place in the opposite direction.

Bei der Ausführungsform gemäß Fig. 6 bewirkt die zwischen der jeweiligen Aufwickelwalze und ihrer zugehörigen Welle angeordnete Feder aufgrund des vorhandenen Drehspiels, daß die Aufwickelwalze stets in Aufwickelrichtung vorgespannt wird. Sofern das Drehspiel groß genug ist, kann damit ein Durchhängen oder ein Faltenschlagen des Bandes vermieden werden.In the embodiment according to FIG. 6, the spring arranged between the respective take-up roller and its associated shaft, due to the rotational play present, causes the take-up roller to always be pretensioned in the take-up direction. If the turning play is large enough, sagging or folding of the tape can be avoided.

Claims (6)

  1. An apparatus for shifting patients with a mobile frame (10) supported on rollers (16), a platform (20) arranged in cantilevered fashion on the frame, and a transport band (44) which by means of a drive mechanism is movable in both directions and proceeding from a first winding roll supported by the frame extends over the upper side of the platform around its free longitudinal edge and from there along the platform underside to a second winding roll supported by the frame onto which it is windable, characterized in that the two winding rolls (26, 28) are constantly coupled with the drive mechanism (68, 70, 72) and that a rotary play is provided between each winding roll (26, 28) and the drive mechanism (68, 70, 72).
  2. Apparatus according to claim 1, characterized in that said winding rolls (26, 28) are each rotatably supported on a shaft (56, 58) with the shafts (56, 58) being coupled with the drive mechanism (68, 70, 72) and the angular rotation of each drive roll (26, 28) with respect to its associated shaft (56, 58) being limited by stops.
  3. Apparatus according to claim 1 or 2, characterized in that each of said winding rolls (26, 28) is biased in its winding direction.
  4. Apparatus according to claims 2 and 3, characterized in that a spring (74) is arranged between each winding roll (26, 28) and its shaft (56, 58) for creating the bias.
  5. Apparatus according to any one of claims 1 to 4, characterized in that said platform (20) is adjustable in height relative to the frame (10).
  6. Apparatus according to any one of claims 1 to 5, characterized in that a handrail (35) is fastened to the frame (10) on the side remote from the platform (20), said handrail (35) extending parallel to the platform (20) with operating elements (32) for a drive control being arranged on said handrail.
EP91119781A 1990-11-22 1991-11-19 Device for transfering patients Expired - Lifetime EP0487061B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP90122343 1990-11-22
EP90122343A EP0430084B1 (en) 1989-11-21 1990-11-22 Device for transfering patients
DE4041335 1990-12-21
DE4041335A DE4041335C1 (en) 1990-12-21 1990-12-21

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EP0487061A1 EP0487061A1 (en) 1992-05-27
EP0487061B1 true EP0487061B1 (en) 1995-02-15

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JP (1) JPH06205A (en)
DE (2) DE4041335C1 (en)

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Also Published As

Publication number Publication date
EP0487061A1 (en) 1992-05-27
DE4041335C1 (en) 1992-01-16
US5185894A (en) 1993-02-16
DE59104603D1 (en) 1995-03-23
JPH06205A (en) 1994-01-11

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