EP0631769B1 - Turning plate as a seat for the disabled - Google Patents

Turning plate as a seat for the disabled Download PDF

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Publication number
EP0631769B1
EP0631769B1 EP93110395A EP93110395A EP0631769B1 EP 0631769 B1 EP0631769 B1 EP 0631769B1 EP 93110395 A EP93110395 A EP 93110395A EP 93110395 A EP93110395 A EP 93110395A EP 0631769 B1 EP0631769 B1 EP 0631769B1
Authority
EP
European Patent Office
Prior art keywords
top plate
turntable
retaining ring
cover plate
annular wall
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
EP93110395A
Other languages
German (de)
French (fr)
Other versions
EP0631769A1 (en
Inventor
Klaus Janisch
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.)
Schmidt and Lenhardt GmbH and Co OHG
Original Assignee
Schmidt and Lenhardt GmbH and Co OHG
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
Application filed by Schmidt and Lenhardt GmbH and Co OHG filed Critical Schmidt and Lenhardt GmbH and Co OHG
Priority to ES93110395T priority Critical patent/ES2078088T3/en
Priority to DE59300690T priority patent/DE59300690D1/en
Priority to EP93110395A priority patent/EP0631769B1/en
Priority to DK93110395.6T priority patent/DK0631769T3/en
Priority to AT93110395T priority patent/ATE128346T1/en
Priority to AU64641/94A priority patent/AU669803B2/en
Priority to ZA944184A priority patent/ZA944184B/en
Priority to US08/260,117 priority patent/US5499862A/en
Priority to CA002126701A priority patent/CA2126701C/en
Priority to JP6167351A priority patent/JP2618337B2/en
Publication of EP0631769A1 publication Critical patent/EP0631769A1/en
Application granted granted Critical
Publication of EP0631769B1 publication Critical patent/EP0631769B1/en
Priority to GR950403040T priority patent/GR3017933T3/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
    • A61G7/1073—Parts, details or accessories
    • A61G7/1076—Means for rotating around a vertical axis
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C21/00—Attachments for beds, e.g. sheet holders, bed-cover holders; Ventilating, cooling or heating means in connection with bedsteads or mattresses
    • A47C21/02—Holders for loose bed elements, e.g. sheet holders; bed cover holders
    • A47C21/022—Sheet holders; Bed cover holders
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/18—Chairs or stools with rotatable seat
    • 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
    • A61G2200/34—Specific positions of the patient sitting

Definitions

  • the invention relates to a turntable as a seat for the disabled, with a base plate, a cover plate rotatably mounted thereon, a cushion mat arranged centrally on this and a circularly contoured, one-piece retaining ring which overlaps this on its peripheral edge and is detachably fastened to the cover plate and which forms the outer edge grips and engages around the cover plate in a hook-like manner and rests against it in a clamping manner.
  • a turntable which consists of a number of circumferentially lined up individual ring segments which have bottom-side locking pins which are detachably locked in corresponding holes in the rotatable cover plate. Thanks to this segmental design of the retaining ring, production is inexpensive. On the other hand, assembly and disassembly are somewhat cumbersome and the appearance of the retaining ring is not always satisfactory, because of the inevitable tolerances that visible radial gaps between the individual ring segments of the retaining ring create. Although this known retaining ring overlaps the outer edge of the cover plate, it lies flush with this on the bottom side, and therefore does not reach under the cover plate.
  • EP-A-0619 994 (this document falls under Article 54 (3) EPC) proposes a turntable of the type mentioned in the introduction, in which the outer edge of the cover plate has a regular polygonal contour with a large number has the same length, at least approximately rectilinear edge parts and the retaining ring has a hook-shaped, elastically deformable outer edge which clamps under the edge of the cover plate.
  • This design of the turntable brings advantages thanks to k the one-piece construction of the retaining ring, but the retaining ring must be elastically deformable in order to be able to assemble and disassemble it. It has also been shown that radial forces are exerted on the upholstery mat when the retaining ring is fitted, which can lead to bulging in the mat.
  • the object of the invention is to design the turntable of the type mentioned while maintaining the one-piece design of the retaining ring so that the retaining ring no longer needs to be deformed during assembly and disassembly and the cover plate is simplified in terms of contour shape.
  • the elastic deformability is achieved not by the flexibility of the material but by the shape.
  • the retaining ring can thus be made from the same rigid plastic material as the cover plate. Due to the annular groove provided according to the invention, the edge of the cover plate, which is massive and non-deformable, is given an elastically flexible ring wall. Since only a thin-walled web remains between the ring groove bottom and the adjacent surface of the cover plate, this acts as a joint and enables the bottom end of the ring wall to be displaced even if a rigid plastic material is used for the cover plate.
  • the annular groove can open into the upper surface, ie the top surface of the cover plate, or can emanate from the lower surface, ie the bottom surface of the cover plate.
  • the inner edge of the retaining ring which engages under the outer edge of the ring wall of the cover plate, causes the ring wall to be displaced into the annular groove, so to speak, so that the inner edge of the retaining ring is released from the outer edge of the cover plate, so that the retaining ring can be removed from the cover plate upwards .
  • the base plate can be circularly contoured in accordance with EP-A-0364 746 or elongated in accordance with EP-A-0617 947 (this document falls under Article 54 (3) EPC), the cover plate being provided with a slide on the base side is, which is displaceable in a longitudinal guide of the base plate.
  • a preferred embodiment consists in that the outer edge of the cover plate has edge recesses arranged at equal intervals, in the areas of which the ring wall is interrupted.
  • the retaining ring is therefore only held on the circumferentially spaced ring wall sections of the cover plate. Such spaced ring wall sections are easier to deform than an uninterrupted circumferential ring wall.
  • the production of the new turntable is easier because rigid material can be used for the retaining ring and the cover plate and the need to provide the cover plate with a non-circular contour is eliminated.
  • the rigid, non-deformable retaining ring makes assembly easier in that the upholstery mat can no longer move.
  • the turntable 10 shown consists of the following main components, namely a cover plate 12 which is rotatably mounted on a base plate 16 by means of a central bearing pin 14, and a cushion mat 18, the outer edge of which is fixed by a retaining ring 20, which in turn clamps the outer edge of the cover plate 12 embraces.
  • the base plate 16 is shown in FIG. 1 elongated and has a longitudinal sliding guide in which a bottom slide of the cover plate 12 is guided. This elongated design of the base plate 16 makes it possible to move patients or disabled people in a bed to the edge of the bed and to turn them there into an exit position.
  • This turntable is also used to advantage in connection with bathlift devices, to enable the disabled to be easily translated from the edge of the tub to the seat of the lift and vice versa.
  • the base plate 16 can also have a circular contour.
  • the turntable 10 can be quickly disassembled without the aid of tools, so that the individual parts can be cleaned and that an equally quick and easy reassembly is then ensured.
  • the cover plate 12 has an annular groove 22 closely adjacent to its outer edge, which, however, as will be explained below, is interrupted by cutouts, so that circumferentially spaced annular groove sections are formed. Between this annular groove 22 and the outer edge of the cover plate 12, an annular wall 24 is formed, at the lower end of which an outwardly projecting bead 26 is provided. A thin-walled web remains between the bottom of the annular groove 22 and the top surface of the cover plate 12, which web represents a bending zone 28 for the annular wall 24.
  • the edge bead 26 of the ring wall 24 is delimited by two wedge-shaped conical surfaces, namely a base-side support surface 30 and a cover-side actuation surface 32.
  • the retaining ring 20 has a bottom inner bead 34, the inside diameter of which corresponds to the outside diameter of the ring wall 24.
  • This inner edge bead 34 of the retaining ring 20 also has two conical boundary surfaces, namely a cover-side holding surface 36 and a bottom-side actuating surface 38.
  • the taper angle of all of these edge bead surfaces is approximately 90 °, in axial section these surfaces are therefore less than 45 ° to the rotating plane of the rotary plate 12.
  • the inner edge bead 34 of the retaining ring 20 engages under the outer edge bead 26 of the ring wall 24, the holding surface 36 lying flat against the support surface 30 of the outer edge bead 26.
  • the dimensioning between cover plate 12 and retaining ring 20 is selected such that the retaining ring 20 rests directly on the cover surface of the cover plate 12 in its outer region and the edge bead 34 of the retaining ring 20 clamps it to the edge bead 26 of the cover plate 12.
  • the retaining ring 20 is lifted off from the base plate 16 on its outer edge.
  • the inner bead 34 of the retaining ring 20 causes the ring wall 24 to pivot inward due to the wedge effect, the deformation taking place essentially in the bending zone 28 and the adjacent region of the ring wall 24.
  • the edge bead 26 is shifted with its ring wall 24 to the inside diameter of the edge bead 34 of the retaining ring 20 towards the center of the turntable, after which the connection of the retaining ring 20 to the rotary plate 12 is released in a certain circumferential area. The same procedure is followed in the adjacent areas of the turntable.
  • the retaining ring 20 can then be removed upwards, after which the cushion mat 18 is exposed and can also be removed from the cover plate 12.
  • the wedge-shaped actuation surface 38 on the edge bead 34 comes into contact with the corresponding actuation surface 32 of the outer edge bead 26 on the ring wall 24.
  • the actuating surface 38 causes the ring wall 24 to pivot inwards until the outer edge of the edge bead 26 comes to rest on the inner radius of the edge bead 34 of the retaining ring 20.
  • the ring wall 24 snaps out again, the support surface 30 sliding along the holding surface 36 and holding these two surfaces together in the end position of the parts.
  • the annular groove 22 is shown open at the bottom.
  • the annular groove 22 could also extend from the top surface of the cover plate 12, so that the bending zone of the annular wall 24 would then be arranged on the bottom side.
  • the outer bead 26 would then be located at the free upper end of the annular wall 24.
  • the cover plate 12 has a shoulder 40 at a distance from its outer edge, as a result of which an annular gap is formed between the cover surface of the cover plate 12 and the retaining ring 20, into which the cushion mat 18 engages with its outer edge.
  • a number of mandrels in an annular arrangement upwards and with a height that is only slightly smaller than the width of the gap between the cover plate 12 and retaining ring 20.
  • These mandrels are used for the form-fitting fixing of the cushion mat 18.
  • Such mandrels are known from the prior art, but were previously provided on the retaining ring 20, with the disadvantage that the cushion mat 18 could be moved during the mounting of the retaining ring.
  • the arrangement of the mandrels 42 on the cover plate 12 ensures that the cushion mat 18 is securely fixed to the cover plate 12 before the holding ring 20 is applied, so that subsequent displacement by the holding ring 20 to be clamped on is excluded.
  • the annular groove 22 does not extend around the entire circumference of the cover plate 12, but that it has edge recesses 44, in the areas of which the annular wall 24 and the adjacent bending zone 28 are interrupted.
  • the depth of the edge recess 44 is preferably equal to the distance between the outer edge of the edge bead 26 and the inner annular surface of the annular groove 22.
  • the annular wall 24 located between two recesses 44 thus forms a spring tongue. Of which are beyond the scope the cover plate 12 24 pieces arranged in an even distribution.
  • the circumferential length of such a spring tongue is smaller than that of a recess 44.
  • a ratio of 1: 2 has proven itself in practice, ie the circumferential length of an annular wall section 24 is approximately half that of an edge recess 44.

Landscapes

  • Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Nursing (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Seats For Vehicles (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Devices For Medical Bathing And Washing (AREA)
  • Toys (AREA)
  • Polarising Elements (AREA)
  • Closures For Containers (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Passenger Equipment (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

A cover plate (12) with cushioned mat (18) is rotatably mounted on a bottom plate (16). The cushioned mat (18) is fixed on the cover plate (12) by an integral, rigid retention ring (20), an inner bead (34) of the retention ring (20) engaging clampingly under an outer bead (26) of the cover plate (12). An annular groove (22) near the outer edge of the cover plate (12) causes the remaining annular wall (24) with the marginal bead (26) to be connected to the rotating plate (12) only via a thin web, this web representing a bending zone (28), so that when the retention ring (20) is lifted off the annular wall (24) acts as a resilient tongue and can be moved elastically inwards. <IMAGE>

Description

Die Erfindung betrifft einen Drehteller als Sitzfläche für Behinderte, mit einer Bodenplatte, einer an dieser drehbar gelagerten Deckplatte, einer auf dieser zentrisch angeordneten Polstermatte und einem, diese an ihrem Umfangsrand übergreifenden und an der Deckplatte lösbar befestigten kreisförmig konturierten, einstückigen Haltering, der den Außenrand der Deckplatte hakenartig um- und untergreift und an diesem klemmend anliegt.The invention relates to a turntable as a seat for the disabled, with a base plate, a cover plate rotatably mounted thereon, a cushion mat arranged centrally on this and a circularly contoured, one-piece retaining ring which overlaps this on its peripheral edge and is detachably fastened to the cover plate and which forms the outer edge grips and engages around the cover plate in a hook-like manner and rests against it in a clamping manner.

Aus der EP-A-0364 746 ist ein Drehteller bekannt, der aus einer Anzahl umfangsmäßig aneinandergereihter einzelner Ringsegmente besteht, die bodenseitige Rastzapfen aufweisen, welche in entsprechenden Löchern der drehbaren Deckplatte lösbar eingerastet sind. Dank dieser Segmentbauweise des Halteringes ist die Herstellung kostengünstig. Andererseits sind Montage und Demontage etwas umständlich und auch das Aussehen des Halteringes ist nicht immer zufriedenstellend und zwar aufgrund der unvermeidbaren Toleranzen, die sichtbare Radialspalten zwischen den einzelnen Ringsegmenten des Halteringes entstehen lassen. Dieser bekannte Haltering übergreift zwar den Außenrand der Deckplatte, liegt jedoch mit dieser bodenseitig bündig, untergreift also die Deckplatte nicht.From EP-A-0364 746 a turntable is known which consists of a number of circumferentially lined up individual ring segments which have bottom-side locking pins which are detachably locked in corresponding holes in the rotatable cover plate. Thanks to this segmental design of the retaining ring, production is inexpensive. On the other hand, assembly and disassembly are somewhat cumbersome and the appearance of the retaining ring is not always satisfactory, because of the inevitable tolerances that visible radial gaps between the individual ring segments of the retaining ring create. Although this known retaining ring overlaps the outer edge of the cover plate, it lies flush with this on the bottom side, and therefore does not reach under the cover plate.

Um die Segmentbauweise des Halteringes zu vermeiden, wird in der EP-A-0619 994 (dieses Dokument fällt unter Artikel 54(3) EPÜ) ein Drehteller der eingangs genannten Art vorgeschlagen, bei dem der Außenrand der Deckplatte eine regelmäßige polygonale Kontu mit einer Vielzahl gleichlanger, wenigstens angenähert geradliniger Randteile aufweist und der Haltering einen hakenförmigen elastisch verformbaren Außenrand aufweist, der den Rand der Deckplatte klemmend untergreift. Diese Ausführung des Drehtellers bringt dank k der einstückigen Bauweise des Halteringes Vorteile, allerdings muß der Haltering elastisch verformbar sein, um ihn montieren und demontieren zu können. Auch hat sich gezeigt, daß beim Montieren des Halteringes Radialkräfte auf die Polstermatte ausgeübt werden, wodurch es zu Beulenbildungen in der Matte kommen kann.In order to avoid the segmental construction of the retaining ring, EP-A-0619 994 (this document falls under Article 54 (3) EPC) proposes a turntable of the type mentioned in the introduction, in which the outer edge of the cover plate has a regular polygonal contour with a large number has the same length, at least approximately rectilinear edge parts and the retaining ring has a hook-shaped, elastically deformable outer edge which clamps under the edge of the cover plate. This design of the turntable brings advantages thanks to k the one-piece construction of the retaining ring, but the retaining ring must be elastically deformable in order to be able to assemble and disassemble it. It has also been shown that radial forces are exerted on the upholstery mat when the retaining ring is fitted, which can lead to bulging in the mat.

Aufgabe der Erfindung ist es, den Drehteller der eingangs genannten Art unter Beibehaltung der einstückigen Ausbildung des Halteringes so auszubilden, daß der Haltering beim Montieren und Demontieren nicht mehr verformt zu werden braucht und die Deckplatte hinsichtlich der Konturenform vereinfacht wird.The object of the invention is to design the turntable of the type mentioned while maintaining the one-piece design of the retaining ring so that the retaining ring no longer needs to be deformed during assembly and disassembly and the cover plate is simplified in terms of contour shape.

Diese Aufgabe wird bei einem Drehteller mit den Merkmalen des Einleitungsteils von Patentanspruch 1 dadurch gelöst, daß dicht benachbart dem Außenrand der Deckplatte in dieser eine, sich wenigstens längs eines Umfangsteils erstreckende, an einer der beiden Oberflächen der Deckplatte mündende Ringnut vorgesehen ist, zwischen deren Boden und der benachbarten Oberfläche der Deckplatte eine dünnwandige Biegezone und zwischen Ringnut und äußerer Umfangsfläche der Deckplatte eine Ringwand gebildet ist, die durch radial einwärtswirkende Kraftanwendung mit federnder Rückstellwirkung in dieser Richtung verlagerbar ist.This object is achieved in a turntable with the features of the introductory part of claim 1, that close to the outer edge of the cover plate is provided in this, extending at least along a circumferential part, at one of the two surfaces of the cover ring groove, between the bottom and the adjacent surface of the cover plate, a thin-walled bending zone and between the ring groove and the outer peripheral surface of the cover plate an annular wall is formed which can be displaced in this direction by the application of force acting radially inward with a resilient restoring effect.

Im Gegensatz zur vorbeschriebenen Ausführung wird die elastische Verformbarkeit nicht durch die Flexibilität des Materials sondern durch die Formgebung erreicht. Der Haltering kann somit aus demselben steifen Kunststoffmaterial hergestellt werden wie die Deckplatte. Durch die erfindungsgemäß vorgesehene Ringnut erhält der ans ich massive unverformbare Rand der Deckplatte eine elastisch biegsame Ringwand. Da zwischen dem Ringnutboden und der benachbarten Oberfläche der Deckplatte nur ein dünnwandiger Steg verbleibt, wirkt dieser als Gelenk und ermöglicht eine Verlagerung des bodenseitigen Endes der Ringwand auch wenn für die Deckplatte ein steifes Kunststoffmaterial verwendet wird.In contrast to the design described above, the elastic deformability is achieved not by the flexibility of the material but by the shape. The retaining ring can thus be made from the same rigid plastic material as the cover plate. Due to the annular groove provided according to the invention, the edge of the cover plate, which is massive and non-deformable, is given an elastically flexible ring wall. Since only a thin-walled web remains between the ring groove bottom and the adjacent surface of the cover plate, this acts as a joint and enables the bottom end of the ring wall to be displaced even if a rigid plastic material is used for the cover plate.

Die Ringnut kann in der oberen Oberfläche, also der Deckfläche der Deckplatte münden oder von der unteren Oberfläche, also der Bodenfläche der Deckplatte ausgehen. In beiden Fällen bewirkt der den Außenrand der Ringwand der Deckplatte untergreifende Innenrand des Halteringes beim Aufwärtsdrücken daß die Ringwand sozusagen in die Ringnut hinein verlagert wird, womit der Innenrand des Halteringes vom Außenrand der Deckplatte freikommt, sodaß der Haltering von der Deckplatte nach oben abgenommen werden kann. Die Bodenplatte kann wie die Deckplatte kreisförmig konturiert sein entsprechend der EP-A-0364 746 oder auch langgestreckt sein entsprechend der EP-A-0617 947 (dieses Dokument fällt unter Artikel 54(3)EPÜ), wobei die Deckplatte bodenseitig mit einem Schieber versehen ist, der in einer Längsführung der Bodenplatte verschiebbar ist.The annular groove can open into the upper surface, ie the top surface of the cover plate, or can emanate from the lower surface, ie the bottom surface of the cover plate. In both cases, the inner edge of the retaining ring, which engages under the outer edge of the ring wall of the cover plate, causes the ring wall to be displaced into the annular groove, so to speak, so that the inner edge of the retaining ring is released from the outer edge of the cover plate, so that the retaining ring can be removed from the cover plate upwards . Like the cover plate, the base plate can be circularly contoured in accordance with EP-A-0364 746 or elongated in accordance with EP-A-0617 947 (this document falls under Article 54 (3) EPC), the cover plate being provided with a slide on the base side is, which is displaceable in a longitudinal guide of the base plate.

Obwohl es im Rahmen der Erfindung liegt, die verformbare Ringwand der Deckplatte ringsumlaufend auszubilden, so besteht eine bevorzugte Ausgestaltung darin, daß der Außenrand der Deckplatte in gleichen Abständen angeordnete Randaussparungen aufweist, in deren Bereichen die Ringwand unterbrochen ist. Der Haltering ist also nur an den umfangsmäßig beabstandeten Ringwandabschnitten der Deckplatte gehaltert. Solche im Abstand liegenden Ringwandabschnitte lassen sich leichter verformen als eine ununterbrochene ringsumlaufende Ringwand.Although it is within the scope of the invention to form the deformable ring wall of the cover plate all around, a preferred embodiment consists in that the outer edge of the cover plate has edge recesses arranged at equal intervals, in the areas of which the ring wall is interrupted. The retaining ring is therefore only held on the circumferentially spaced ring wall sections of the cover plate. Such spaced ring wall sections are easier to deform than an uninterrupted circumferential ring wall.

Die Herstellung des neuen Drehtellers ist einfacher, da für den Haltering und die Deckplatte steifes Material verwendet werden kann und die Notwendigkeit, die Deckplatte mit einer unrunden Kontur zu versehen, entfällt. Der starre unverformbare Haltering erleichtert die Montage insofern, als keine Verschiebung der Polstermatte mehr eintreten kann.The production of the new turntable is easier because rigid material can be used for the retaining ring and the cover plate and the need to provide the cover plate with a non-circular contour is eliminated. The rigid, non-deformable retaining ring makes assembly easier in that the upholstery mat can no longer move.

Anhand der Zeichnung, die ein Ausführungsbeispiel darstellt wird die Erfindung näher beschrieben.The invention is described in more detail with reference to the drawing, which represents an exemplary embodiment.

Es zeigt:

FIG. 1
den grundsätzlichen Aufbau eines Drehtellers mit einer drehbaren und zusätzlich längsverschiebbaren Drehplatte teilweise im Schnitt,
FIG. 2
einen Querschnitt durch die neue Ausführungsform der Deckplatte,
FIG. 3
eine Draufsicht auf einen Ausschnitt der Deckplatte, und
FIG. 4
einen Querschnitt im Randbereich des Drehtellers etwa längs der Linie 4-4 der FIG. 3.
It shows:
FIG. 1
the basic structure of a turntable with a rotating and additionally longitudinally displaceable rotating plate, partly in section,
FIG. 2nd
a cross section through the new embodiment of the cover plate,
FIG. 3rd
a plan view of a section of the cover plate, and
FIG. 4th
a cross section in the edge region of the turntable approximately along the line 4-4 of FIG. 3rd

Der in FIG. 1 gezeigte Drehteller 10 besteht aus folgenden Hauptkomponenten, nämlich einer Deckplatte 12, die mittels eines zentralen Lagerzapfens 14 auf einer Bodenplatte 16 drehbar gelagert ist, sowie einer Polstermatte 18, deren Außenrand von einem Haltering 20 fixiert wird, der seinerseits den Außenrand der Deckplatte 12 klemmend umgreift. Die Bodenplatte 16 ist gemäß FIG. 1 länglich ausgebildet und hat eine Längsschiebeführung, in der ein bodenseitiger Schieber der Deckplatte 12 geführt ist. Diese längliche Ausführung der Bodenplatte 16 ermöglicht es, Patienten oder Behinderte in einem Bett an den Bettrand zu verschieben und dort in eine Ausstiegsstellung zu drehen. Ebenso wird dieser Drehteller in Verbindung mit Badeliftgeräten vorteilhaft verwendet, um auch hier ein leichtes Übersetzen des Behinderten vom Wannenrand auf die Sitzfläche des Lifters und umgekehrt zu ermöglichen.The in FIG. 1, the turntable 10 shown consists of the following main components, namely a cover plate 12 which is rotatably mounted on a base plate 16 by means of a central bearing pin 14, and a cushion mat 18, the outer edge of which is fixed by a retaining ring 20, which in turn clamps the outer edge of the cover plate 12 embraces. The base plate 16 is shown in FIG. 1 elongated and has a longitudinal sliding guide in which a bottom slide of the cover plate 12 is guided. This elongated design of the base plate 16 makes it possible to move patients or disabled people in a bed to the edge of the bed and to turn them there into an exit position. This turntable is also used to advantage in connection with bathlift devices, to enable the disabled to be easily translated from the edge of the tub to the seat of the lift and vice versa.

Alternativ zur Darstellung gemäß FIG. 1 kann die Bodenplatte 16 aber auch kreisförmig konturiert sein.As an alternative to the representation according to FIG. 1, the base plate 16 can also have a circular contour.

Wesentlich im Gebrauch ist, daß der Drehteller 10 sich ohne Zuhilfenahme von Werkzeugen schnell demontieren läßt, sodaß die Einzelteile gereinigt werden können und daß anschließend eine ebenso schnelle und einfache Wiedermontage gewährleistet ist.It is essential in use that the turntable 10 can be quickly disassembled without the aid of tools, so that the individual parts can be cleaned and that an equally quick and easy reassembly is then ensured.

Wie sich insbesondere aus den Figuren 3 und 4 ergibt, weist die Deckplatte 12 dicht benachbart ihres Außenrandes eine Ringnut 22 auf, die allerdings, wie anschließend noch erläutert wird, durch Aussparungen unterbrochen ist, sodaß umfangsmäßig beabstandete Ringnutabschnitte gebildet werden. Zwischen dieser Ringnut 22 und dem Außenrand der Deckplatte 12 wird eine Ringwand 24 gebildet an deren unterem Ende ein nach außen vorspringender Randwulst 26 vorgesehen ist. Zwischen dem Boden der Ringnut 22 und der Deckfläche der Deckplatte 12 verbleibt ein dünnwandiger Steg, der eine Biegezone 28 für die Ringwand 24 darstellt. Der Randwulst 26 der Ringwand 24 ist von zwei keilförmigen konischen Flächen, nämlich einer bodenseitigen Stützfläche 30 und einer deckseitigen Betätigungsfläche 32 begrenzt.As can be seen in particular from FIGS. 3 and 4, the cover plate 12 has an annular groove 22 closely adjacent to its outer edge, which, however, as will be explained below, is interrupted by cutouts, so that circumferentially spaced annular groove sections are formed. Between this annular groove 22 and the outer edge of the cover plate 12, an annular wall 24 is formed, at the lower end of which an outwardly projecting bead 26 is provided. A thin-walled web remains between the bottom of the annular groove 22 and the top surface of the cover plate 12, which web represents a bending zone 28 for the annular wall 24. The edge bead 26 of the ring wall 24 is delimited by two wedge-shaped conical surfaces, namely a base-side support surface 30 and a cover-side actuation surface 32.

Der Haltering 20 hat einen bodenseitigen inneren Randwulst 34, dessen Innendurchmesser dem Außendurchmesser der Ringwand 24 entspricht. Dieser innere Randwulst 34 des Halteringes 20 hat ebenfalls zwei konische Begrenzungsflächen, nämlich eine deckseitige Haltefläche 36 und eine bodenseitige Betätigungsfläche 38. Der Konizitätswinkel aller dieser Randwulstflächen beträgt etwa 90°, im Axialschnitt liegen diese Flächen also unter 45° zur Drehebene der Drehplatte 12.The retaining ring 20 has a bottom inner bead 34, the inside diameter of which corresponds to the outside diameter of the ring wall 24. This inner edge bead 34 of the retaining ring 20 also has two conical boundary surfaces, namely a cover-side holding surface 36 and a bottom-side actuating surface 38. The taper angle of all of these edge bead surfaces is approximately 90 °, in axial section these surfaces are therefore less than 45 ° to the rotating plane of the rotary plate 12.

In der Montagestellung gemäß FIG. 4 untergreift der innere Randwulst 34 des Halteringes 20 den äußeren Randwulst 26 der Ringwand 24, wobei die Haltefläche 36 flächig an der Stützfläche 30 des äußeren Randwulstes 26 anliegt. Die Dimensionierung zwischen Deckplatte 12 und Haltering 20 ist so gewählt, daß der Haltering 20 unmittelbar auf der Deckfläche der Deckplatte 12 in deren Außenbereich aufliegt und der Randwulst 34 des Halteringes 20 diesen am Randwulst 26 der Deckplatte 12 klemmend festhält. Zur Demontage des Drehtellers 10 hebt man den Haltering 20 an seinem Außenrand von der Bodenplatte 16 ab. Dabei bewirkt der innere Randwulst 34 des Halteringes 20 aufgrund der Keilwirkung ein Einwärtsschwenken der Ringwand 24, wobei die Verformung im wesentlichen in der Biegezone 28 und dem angrenzenden Bereich der Ringwand 24 stattfindet. Der Randwulst 26 wird mit seiner Ringwand 24 bis auf den Innendurchmesser des Randwulstes 34 des Halteringes 20 zum Drehtellerzentrum hin verlagert, wonach die Verbindung des Halteringes 20 mit der Drehplatte 12 in einem bestimmten Umfangsbereich gelöst ist. In gleicher Weise wird in den angrenzenden Bereichen des Drehtellers verfahren. Der Haltering 20 kann dann nach oben abgenommen werden, wonach die Polstermatte 18 freiliegt und ebenfalls von der Deckplatte 12 abgenommen werden kann.In the assembly position according to FIG. 4, the inner edge bead 34 of the retaining ring 20 engages under the outer edge bead 26 of the ring wall 24, the holding surface 36 lying flat against the support surface 30 of the outer edge bead 26. The dimensioning between cover plate 12 and retaining ring 20 is selected such that the retaining ring 20 rests directly on the cover surface of the cover plate 12 in its outer region and the edge bead 34 of the retaining ring 20 clamps it to the edge bead 26 of the cover plate 12. To remove the turntable 10, the retaining ring 20 is lifted off from the base plate 16 on its outer edge. The inner bead 34 of the retaining ring 20 causes the ring wall 24 to pivot inward due to the wedge effect, the deformation taking place essentially in the bending zone 28 and the adjacent region of the ring wall 24. The edge bead 26 is shifted with its ring wall 24 to the inside diameter of the edge bead 34 of the retaining ring 20 towards the center of the turntable, after which the connection of the retaining ring 20 to the rotary plate 12 is released in a certain circumferential area. The same procedure is followed in the adjacent areas of the turntable. The retaining ring 20 can then be removed upwards, after which the cushion mat 18 is exposed and can also be removed from the cover plate 12.

Bei der anschließenden Wiedermontage tritt nach Aufsetzen des Halteringes 20 die keilförmige Betätigungsfläche 38 am Randwulst 34 mit der entsprechenden Betätigungsfläche 32 des äußeren Randwulstes 26 an der Ringwand 24 flächig in Kontakt. Durch Abwärtsdrücken des Halteringes 20 bewirkt die Betätigungsfläche 38 ein Einwärtsschwenken der Ringwand 24 bis der Außenrand des Randwulstes 26 auf dem Innenradius des Randwulstes 34 des Halteringes 20 zu liegen kommt. Anschließend schnappt die Ringwand 24 wieder nach außen, wobei die Stützfläche 30 an der Haltefläche 36 entlanggleitet und in der Endstellung der Teile diese beiden Flächen klemmend aneinanderhält.In the subsequent reassembly, after the retaining ring 20 has been put in place, the wedge-shaped actuation surface 38 on the edge bead 34 comes into contact with the corresponding actuation surface 32 of the outer edge bead 26 on the ring wall 24. By pressing the retaining ring 20 downwards, the actuating surface 38 causes the ring wall 24 to pivot inwards until the outer edge of the edge bead 26 comes to rest on the inner radius of the edge bead 34 of the retaining ring 20. Subsequently, the ring wall 24 snaps out again, the support surface 30 sliding along the holding surface 36 and holding these two surfaces together in the end position of the parts.

Im Ausführungsbeispiel ist die Ringnut 22 nach unten offen dargestellt. In einer alternativen Ausführungsform könnte die Ringnut 22 auch von der Deckfläche der Deckplatte 12 ausgehen, sodaß dann die Biegezone der Ringwand 24 bodenseitig angeordnet wäre. Der äußere Randwulst 26 würde sich dann am freien oberen Ende der Ringwand 24 befinden.In the exemplary embodiment, the annular groove 22 is shown open at the bottom. In an alternative embodiment, the annular groove 22 could also extend from the top surface of the cover plate 12, so that the bending zone of the annular wall 24 would then be arranged on the bottom side. The outer bead 26 would then be located at the free upper end of the annular wall 24.

Die Deckplatte 12 weist im Abstand von ihrem Außenrand einen Absatz 40 auf, wodurch zwischen der Deckfläche der Deckplatte 12 und dem Haltering 20 ein Ringspalt entsteht, in den die Polstermatte 18 mit ihrem Außenrand eingreift. Im Bereich dieses Ringspaltes ragen von der Deckfläche der Deckplatte 12 eine Anzahl Dorne in einer ringförmigen Anordnung nach oben und zwar mit einer Höhe, die nur geringfügig kleiner als die Breite des Spaltes zwischen Deckplatte 12 und Haltering 20 ist. Diese Dorne dienen der formschlüssigen Fixierung der Polstermatte 18. Solche Dorne sind aus dem Stand der Technik bekannt, wurden bisher aber am Haltering 20 vorgesehen, mit dem Nachteil, daß bei der Montage des Halteringes die Polstermatte 18 verschoben werden konnte. Die Anordnung der Dorne 42 an der Deckplatte 12 gewährleistet, daß die Polstermatte 18 an der Deckplatte 12 schon vor dem Aufbringen des Halteringes 20 sicher fixiert ist, sodaß ein nachträgliches Verschieben durch den aufzuklemmenden Haltering 20 ausgeschlossen ist.The cover plate 12 has a shoulder 40 at a distance from its outer edge, as a result of which an annular gap is formed between the cover surface of the cover plate 12 and the retaining ring 20, into which the cushion mat 18 engages with its outer edge. In the area of this annular gap protrude from the top surface the cover plate 12 a number of mandrels in an annular arrangement upwards and with a height that is only slightly smaller than the width of the gap between the cover plate 12 and retaining ring 20. These mandrels are used for the form-fitting fixing of the cushion mat 18. Such mandrels are known from the prior art, but were previously provided on the retaining ring 20, with the disadvantage that the cushion mat 18 could be moved during the mounting of the retaining ring. The arrangement of the mandrels 42 on the cover plate 12 ensures that the cushion mat 18 is securely fixed to the cover plate 12 before the holding ring 20 is applied, so that subsequent displacement by the holding ring 20 to be clamped on is excluded.

Aus FIG. 3 ergibt sich, daß sich die Ringnut 22 nicht voll umfänglich um die Deckplatte 12 herum erstreckt sondern daß diese Randaussparungen 44 aufweist, in deren Bereichen die Ringwand 24 und die angrenzende Biegezone 28 unterbrochen sind. Die Tiefe der Randaussparung 44 ist vorzugsweise gleich dem Abstand des Außenrandes des Randwulstes 26 von der inneren Ringfläche der Ringnut 22. Zwischen je zwei Aussparungen 44 bildet somit die dazwischen befindliche Ringwand 24 eine Federzunge. Davon sind über den Umfang der Deckplatte 12 24 Stück in gleichmäßiger Verteilung angeordnet. Die Umfangslänge einer solchen Federzunge ist kleiner als diejenige einer Aussparung 44. Ein Verhältnis von 1:2 hat sich in der Praxis bewährt, d.h. die Umfangslänge eines Ringwandabschnittes 24 ist etwa halb so groß wie diejenige einer Randaussparung 44.From FIG. 3 results that the annular groove 22 does not extend around the entire circumference of the cover plate 12, but that it has edge recesses 44, in the areas of which the annular wall 24 and the adjacent bending zone 28 are interrupted. The depth of the edge recess 44 is preferably equal to the distance between the outer edge of the edge bead 26 and the inner annular surface of the annular groove 22. The annular wall 24 located between two recesses 44 thus forms a spring tongue. Of which are beyond the scope the cover plate 12 24 pieces arranged in an even distribution. The circumferential length of such a spring tongue is smaller than that of a recess 44. A ratio of 1: 2 has proven itself in practice, ie the circumferential length of an annular wall section 24 is approximately half that of an edge recess 44.

Claims (10)

  1. Turntable serving as a seat surface for handicapped persons, comprising a bottom plate (16), a top plate (12) pivotably mounted thereon, a padded cushion (18) disposed centrally on said top plate (12), and an integral retaining ring (20) with a circular outline, releasably fixed to said top plate (12) and overlapping said padded cushion (18) at its circumferential edge, gripping the top and bottom of the outer edge of said top plate (12) like a hook and resting thereon so as to clamp it, characterised in that, closely adjacent to the outer edge of the top plate (12), an annular groove (22) is provided in said top plate (12), which extends along at least part of the periphery and terminates at one of the two surfaces of the top plate (12), comprising the top side and the bottom side, and that a thin-walled flexible zone (28) is formed between the bottom of said annular groove (22) and the adjacent surface of the top plate (12), and an annular wall (24) is formed between the annular groove (22) and the outer peripheral surface of the top plate (12), which, by the exertion of radially inward force, can be displaced in this direction with a resilient restoring effect.
  2. Turntable as claimed in Claim 1, characterised in that the annular groove (22) terminates at the bottom surface of the top plate (12).
  3. Turntable as claimed in Claim 1 or 2, characterised in that the top plate (12) has regularly spaced marginal recesses (44) in the regions of which the annular wall (24) is interrupted.
  4. Turntable as claimed in Claim 3, characterised in that the circumferential length of each of the marginal recesses (44) is at least equal to that of the portion of annular wall (22) formed between each pair of marginal recesses (44).
  5. Turntable as claimed in Claim 4, characterised in that the circumferential length of each portion of annular wall (24) is approximately half as great as that of the marginal recess (44).
  6. Turntable as claimed in one of the Claims 1 to 5, characterised in that the annular wall (24) has a conical supporting surface (30) at the bottom, terminating at the outer circumferential surface of said annular wall (24), with the inner marginal beading (34) of the retaining ring (20) resting in a clamped manner on said supporting surface (30).
  7. Turntable as claimed in Claim 6, characterised in that the conical supporting surface (30) is formed on marginal beading (26) projecting outwardly from the annular wall (24).
  8. Turntable as claimed in Claim 7, characterised in that the top surface of the marginal beading (26) of the annular wall is likewise formed as a conical operating surface (32), though in this case rising inwardly from the outside.
  9. Turntable as claimed in one of the Claims 6 to 8, characterised in that the top surface of the inner marginal beading (34) of the retaining ring (20) is formed as a retaining surface (36) dropping conically inwards from the outside, which rests over a large area on the supporting surface (30) of the top plate(12), in a clamping fashion.
  10. Turntable as claimed in one of the Claims 1 to 9, characterised in that, in the region where the retaining ring (20) and padded cushion (18) overlap, the top plate (12) has a concentric arrangement of spikes (42) pointing upwards, the heigt of which is only slightly less than the width of a gap formed between the retaining ring (20) and the top surface of the top plate (12) for receiving the edge of the padded cushion (18).
EP93110395A 1993-06-30 1993-06-30 Turning plate as a seat for the disabled Expired - Lifetime EP0631769B1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
ES93110395T ES2078088T3 (en) 1993-06-30 1993-06-30 ROTATING PLATE AS A SEATING SURFACE FOR DISABLED PERSONS.
DE59300690T DE59300690D1 (en) 1993-06-30 1993-06-30 Turntable as a seat for the disabled.
EP93110395A EP0631769B1 (en) 1993-06-30 1993-06-30 Turning plate as a seat for the disabled
DK93110395.6T DK0631769T3 (en) 1993-06-30 1993-06-30 Turntable as a seating area for people with disabilities
AT93110395T ATE128346T1 (en) 1993-06-30 1993-06-30 TURNTABLE AS A SEAT FOR THE DISABLED.
AU64641/94A AU669803B2 (en) 1993-06-30 1994-06-09 Turntable
ZA944184A ZA944184B (en) 1993-06-30 1994-06-14 Turntable
US08/260,117 US5499862A (en) 1993-06-30 1994-06-15 Turntable
CA002126701A CA2126701C (en) 1993-06-30 1994-06-24 Turntable
JP6167351A JP2618337B2 (en) 1993-06-30 1994-06-27 Turntable useful as a seat for the physically handicapped
GR950403040T GR3017933T3 (en) 1993-06-30 1995-11-01 Turning plate as a seat for the disabled.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93110395A EP0631769B1 (en) 1993-06-30 1993-06-30 Turning plate as a seat for the disabled

Publications (2)

Publication Number Publication Date
EP0631769A1 EP0631769A1 (en) 1995-01-04
EP0631769B1 true EP0631769B1 (en) 1995-09-27

Family

ID=8213019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93110395A Expired - Lifetime EP0631769B1 (en) 1993-06-30 1993-06-30 Turning plate as a seat for the disabled

Country Status (11)

Country Link
US (1) US5499862A (en)
EP (1) EP0631769B1 (en)
JP (1) JP2618337B2 (en)
AT (1) ATE128346T1 (en)
AU (1) AU669803B2 (en)
CA (1) CA2126701C (en)
DE (1) DE59300690D1 (en)
DK (1) DK0631769T3 (en)
ES (1) ES2078088T3 (en)
GR (1) GR3017933T3 (en)
ZA (1) ZA944184B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3713108B2 (en) * 1996-08-14 2005-11-02 富士写真フイルム株式会社 Pillow type packaging equipment
US6053572A (en) * 1999-03-08 2000-04-25 Doran; Michele R. Device for facilitating access to sitting position on car seat
GB2446575B (en) * 2007-02-17 2011-04-13 Dlp Ltd Improvements in or relating to padded shower seats

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2450250A1 (en) * 1974-08-21 1976-05-06 Drabert Soehne Swivel office chair with detachable upholstery holder - has peripheral strip with retaining projections around edge of seat base plate
EP0210710A3 (en) * 1985-05-07 1987-11-25 Ching-Chu Chi Novel structure of inlaid rattan network for seating and bed furnitures
DE3835532C1 (en) * 1988-10-19 1990-02-15 Peter 7989 Eisenharz De Schmidt
DE3841531A1 (en) * 1988-12-09 1990-06-13 Bayer Ag FASTENING BETWEEN UPHOLSTERY COVER AND CARRIER
US5067188A (en) * 1990-05-04 1991-11-26 Brantman Robert F Sliding transfer device
JPH04174664A (en) * 1990-07-25 1992-06-22 Yoshinori Hatake Carrier and bath tub for disabled person left lying in bed
EP0633010B1 (en) * 1993-03-16 1995-08-30 Schmidt &amp; Lenhardt GmbH &amp; Co. oHG Turning plate as a seat for disabled persons

Also Published As

Publication number Publication date
CA2126701A1 (en) 1994-12-31
CA2126701C (en) 1997-06-03
ZA944184B (en) 1995-06-14
GR3017933T3 (en) 1996-02-29
US5499862A (en) 1996-03-19
EP0631769A1 (en) 1995-01-04
JPH0767922A (en) 1995-03-14
DK0631769T3 (en) 1996-02-12
ES2078088T3 (en) 1995-12-01
AU669803B2 (en) 1996-06-20
ATE128346T1 (en) 1995-10-15
JP2618337B2 (en) 1997-06-11
AU6464194A (en) 1995-01-12
DE59300690D1 (en) 1995-11-02

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