EP0619994B1 - 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
EP0619994B1
EP0619994B1 EP93104199A EP93104199A EP0619994B1 EP 0619994 B1 EP0619994 B1 EP 0619994B1 EP 93104199 A EP93104199 A EP 93104199A EP 93104199 A EP93104199 A EP 93104199A EP 0619994 B1 EP0619994 B1 EP 0619994B1
Authority
EP
European Patent Office
Prior art keywords
cover plate
outer edge
plate
accordance
retaining ring
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
EP93104199A
Other languages
German (de)
French (fr)
Other versions
EP0619994A1 (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
Priority to EP93104199A priority Critical patent/EP0619994B1/en
Priority to ES93104199T priority patent/ES2076804T3/en
Priority to AT93104199T priority patent/ATE127678T1/en
Priority to DK93104199.0T priority patent/DK0619994T3/en
Priority to DE59300599T priority patent/DE59300599D1/en
Application filed by Schmidt and Lenhardt GmbH and Co OHG filed Critical Schmidt and Lenhardt GmbH and Co OHG
Priority to US08/205,943 priority patent/US5441329A/en
Priority to CA002119042A priority patent/CA2119042A1/en
Priority to JP6071635A priority patent/JP2537138B2/en
Publication of EP0619994A1 publication Critical patent/EP0619994A1/en
Application granted granted Critical
Publication of EP0619994B1 publication Critical patent/EP0619994B1/en
Priority to GR950402911T priority patent/GR3017808T3/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
    • 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 retaining ring which overlaps this on its peripheral edge and is detachably fastened to the cover plate and also the outer edge of the Cover plate overlaps.
  • the retaining ring here 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 construction of the retaining ring, production is inexpensive. Although the retaining ring could also be produced in one piece, there are then fitting problems because the cover plate must be made of a different plastic material than the retaining ring due to the required sliding properties and due to the different coefficients of thermal expansion, there would be fitting errors with regard to the exact latching of the retaining ring of the cover plate. A one-piece retaining ring would be preferable to simplify assembly and disassembly for cleaning.
  • the object of the invention is to improve the turntable of the above type in such a way that any fit problems between the retaining ring and the cover plate can be avoided and the handling during assembly and disassembly of the retaining ring is simplified without negatively influencing the holding effect of the cushion mat on the cover plate.
  • the outer edge of the cover plate has a regular polygonal contour with a plurality of equally long, at least approximately rectilinear edge parts, that the retaining ring is formed in one piece and has an axially sectioned, elastically deformable outer edge , which engages under the cover plate at least at the transitions between each two of its adjacent edge parts and rests against these transitions on the outer edge of the cover plate.
  • the retaining ring requires only very little elastic deformability, because when the retaining ring is assembled, the outer ring is pressed over a few corners of the polygonal outer edge of the cover plate, the retaining ring being able to deform like a tendon in the neighboring areas of these polygonal corners , which results in a local increase in diameter of the retaining ring in the region of one or more adjacent corners of the cover plate.
  • the corners between two at least approximately straight Edge parts of the cover plate are preferably rounded.
  • the new turntable is further characterized in that the outer edge of the retaining ring rests on a plurality of spaced apart areas on the cover plate and a gap is formed between each of such contact areas between the retaining ring and cover plate.
  • the width of this gap changes continuously in the circumferential direction. It is zero in the area of the polygon corners, then rises steadily to the middle of the straight edge parts of the cover plate and then gradually decreases again in the circumferential direction to the value of zero in the area of the next polygon corner.
  • a further embodiment of the invention can be seen in the fact that the axial section contour of the outer edge of the cover plate is at least approximately semicircular.
  • the outer edge of the retaining ring is preferably formed with a clamping surface which tapers conically towards the bottom plane of the retaining ring. This clamping surface bears against the rounded polygon corner regions in the lower half of the outer edge of the cover plate, the retaining ring being supported directly on the top surface of the cover plate. Between this support surface of the retaining ring and its clamping surface there is a slight undersize in comparison to the corresponding contact surfaces of the Cover plate, so that a certain deformation of the outer edge of the retaining ring occurs when it is mounted on the cover plate.
  • the retaining ring is clamped both radially and axially on the cover plate, with the result that the cushion mat is held securely against sliding on the cover plate. Nevertheless, disassembly of the turntable for cleaning purposes is very easy to carry out, since only a lifting axial force has to be exerted on the outer edge of the retaining ring, which can be done for example by means of two fingers. Due to this axial force and the free spaces formed between the polygon corners between the retaining ring and the cover plate, the retaining ring can stretch like a chord between two polygon corners, which results in an increase in the diameter of the retaining ring in the area of the polygon corner, which allows the retaining ring to be easily lifted off the cover plate.
  • the outer edge of the retaining ring which is hook-shaped in axial section, has a circumferential lip which engages under the outer edge of the cover plate, which is convexly rounded in cross section, and at least approximately linearly rests against it under pretension.
  • This clamping line contact between the peripheral lip of the retaining ring and the cover plate is advantageous both for the clamping effect and for the easy assembly and disassembly of the retaining ring.
  • the inner edge of the retaining ring preferably tapers radially inward in cross section. The inner end of this inner edge is then still below the surface of the cushion mat in its uncompressed area.
  • a circumferential rib penetrating into the cushion mat is provided on the inside, which improves the hold of the cushion mat on the cover plate. This circumferential rib can be interrupted at circumferential intervals.
  • the turntable 10 has a base plate 12, a cover plate 14, a soft compressible support mat 16 and a retaining ring 18.
  • the base plate 12 and the cover plate 14 each have a central bore, that of the base plate being stepped. Both plates 12, 14 are connected to one another by means of a central clip 20 which has spring tongues on the bottom which engage under an annular shoulder in the stepped bore of the base plate 12.
  • the cover plate can be lifted off the base plate by radial inward movement of the spring tongues of the central clip 20.
  • the subsequent reassembly only requires the alignment of the two holes in the base plate and cover plate, after which the central clip 20 is inserted axially. His spring tongues automatically move inwards and then automatically snap into the ring shoulder of the base plate 12. Assembly and disassembly are possible in the shortest possible time without tools.
  • the cover plate 14 has a new type of outer contour, because it has rounded corners 22 at equal angular intervals 18, between which straight edge parts 24 each extend.
  • the cover plate 14 is thus formed polygon-like on its outer circumference.
  • the retaining ring 18 is rotationally symmetrical, that is to say it has a circular contour. Its inner surface lies only in the transitions 22 between two rectilinear edge parts 24 of the cover plate 14, and between each of these transitions 22, which are formed by the rounded polygon corners, there remains a circular segment-shaped gap 26, the gap width of which is in the middle of the straight line Edge parts 24 is largest and then steadily decreases on both sides down to the value zero in the area of the transitions 22.
  • the cover plate 14 has a convexly rounded contour in axial section, which here is semicircular.
  • the diameter of the cover plate 14 in the middle height range is therefore the largest and decreases upwards and downwards.
  • the reduction in diameter in the lower half of the cover plate 14 is important so that the retaining ring 18 can reach under the cover plate.
  • the retaining ring 18 has a hook-shaped outer edge 28 and an inner edge 30 which overlaps the support mat 16 and which has a conically upward-facing inner surface 32 on which a peripheral rib 34 is formed which penetrates into the support mat 16 in a form-fitting manner.
  • the thickness of the inner edge 30 decreases continuously radially inwards.
  • the cross section of the inner edge 30 is essentially triangular.
  • the outer edge 28 of the retaining ring 18 has, in axial section, an inner surface 36 rounded in the upper region, which delimits a crescent-shaped cavity 40 with the convex outer surface 38 of the cover plate 14.
  • the retaining ring 16 does not lie along the entire circumference on the outer edge 46 of the cover plate 14, which is in contact rather, only in the area of the transitions 22 between two rectilinear edge parts 24 of the cover plate 14. Between the inner edge 30 and the outer edge 28 of the retaining ring 18, the latter has an inside support surface 48 which lies all around on a complementary flat annular surface of the cover plate 14.
  • the distance between this support surface 48 and the conical clamping surface 42 on the lower lip 44 of the retaining ring 18 is dimensioned somewhat smaller than the corresponding distance of the counter surfaces on the cover plate 14, so that in the assembled state a slight deformation of the lip 44 of the retaining ring 18 occurs, whereby the Retaining ring 18 is clamped to the cover plate 14 both in the radial direction and in the axial direction.
  • the peripheral lip 44 ensures that the support surface 48 of the retaining ring is pulled axially against the annular surface of the cover plate 14.
  • the contour of the outer edge 46 is shown in dashed lines in the middle of the straight edge part 24 of the cover plate 14. In this area, the outer edge 28 of the retaining ring 18 does not engage under the cover plate 14.
  • the retaining ring 18 can be detached from the cover plate 14 with a slight finger pressure. You run your finger between them Retaining ring 18 and base plate 12 and presses the retaining ring 18 away from the base plate 12 in any circumferential area. Since the clamping contact between the holding ring 18 and the cover plate 14 is only present within a small circumferential area within the transitions 22, the outer edge 28 of the holding ring 18 deforms on both sides adjacent to this clamping zone, namely the circularly contoured outer edge 28 is stretched like a chord (FIG. 4), whereby the gap 26 decreases in width. As a result, the diameter of the outer edge 28 increases in the area of the transitions 22 and the circumferential lip 44 is released from the outer edge 46 of the cover plate 14 in this area. The retaining ring 18 can then simply be pivoted upward away from the cover plate 14.

Abstract

A cover plate (14) is rotatably mounted on a bottom plate (12). The cover plate carries a mat (16) which is fastened on the circumference of the cover plate (14) via a retaining ring (18). The cover plate (14) has an outer edge with a polygonal contour, so that the retaining ring (18) engages under the cover plate (14) at the corners of the polygon only. This results in a number of clamping zones which are spaced apart at the circumference and cavities in between these. The retaining ring (18) can thereby easily be removed from the cover plate (14) by local deformation in order to clean the turning plate (10). <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 Haltering, der auch den Außenrand der Deckplatte übergreift.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 retaining ring which overlaps this on its peripheral edge and is detachably fastened to the cover plate and also the outer edge of the Cover plate overlaps.

Ein derartiger Drehteller ist aus der EP-B-0364746 bekannt. Der Haltering besteht hier aus einer Anzahl umfangsmäßig aneinandergereihter einzelner Ringsegmente, die bodenseitige Rastzapfen aufweisen, welche in entsprechenden Löchern der drehbaren Deckplatte lösbar eingerastet sind. Dank dieser Segmentbauweise des Halteringes, ist die Herstellung kostengünstig. Zwar könnte man den Haltering auch einstückig herstellen, jedoch gibt es dann Passungsprobleme, weil die Deckplatte aufgrund der geforderten Gleiteigenschaften aus einem anderen Kunststoffmaterial als der Haltering bestehen muß und es aufgrund der unterschiedlichen Temperaturausdehnungskoeffizienten zu Passungsfehlern hinsichtlich der exakten Verrastung des Halteringes der Deckplatte kommen würde. Ein einstückiger Haltering wäre zur Vereinfachung der Montage und Demontage für die Reinigungsarbeiten vorzuziehen.Such a turntable is known from EP-B-0364746. The retaining ring here 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 construction of the retaining ring, production is inexpensive. Although the retaining ring could also be produced in one piece, there are then fitting problems because the cover plate must be made of a different plastic material than the retaining ring due to the required sliding properties and due to the different coefficients of thermal expansion, there would be fitting errors with regard to the exact latching of the retaining ring of the cover plate. A one-piece retaining ring would be preferable to simplify assembly and disassembly for cleaning.

Aufgabe der Erfindung ist es, den Drehteller der vorstehenden Art dahingehend zu verbessern, daß jegliche Passungsprobleme zwischen Haltering und Deckplatte vermieden werden und die Handhabung bei der Montage und Demontage des Halteringes vereinfacht wird, ohne den Halteeffekt der Polstermatte an der Deckplatte negativ zu beeinflussen.The object of the invention is to improve the turntable of the above type in such a way that any fit problems between the retaining ring and the cover plate can be avoided and the handling during assembly and disassembly of the retaining ring is simplified without negatively influencing the holding effect of the cushion mat on the cover plate.

Diese Aufgabe wird bei einem Drehteller der eingangs genannten Art dadurch gelöst, daß der Außenrand der Deckplatte eine regelmäßige polygonale Kontur mit einer Vielzahl gleich langer, wenigstens angenähert geradliniger Randteile aufweist, daß der Haltering einstückig ausgebildet ist und einen im Axialschnitt hakenförmigen, elastisch verformbaren Außenrand aufweist, der die Deckplatte wenigstens an den Übergängen zwischen je zwei ihrer benachbarten Randteile untergreift und an diesen Übergängen am Außenrand der Deckplatte klemmend anliegt.This object is achieved in a turntable of the type mentioned in that the outer edge of the cover plate has a regular polygonal contour with a plurality of equally long, at least approximately rectilinear edge parts, that the retaining ring is formed in one piece and has an axially sectioned, elastically deformable outer edge , which engages under the cover plate at least at the transitions between each two of its adjacent edge parts and rests against these transitions on the outer edge of the cover plate.

Dank der polygonalen Kontur des Außenrandes der Deckplatte benötigt der Haltering nur eine sehr geringe elastische Verformbarkeit, denn beim Montieren des Halteringes wird dessen Außenring über einige wenige Ecken des polygonalen Außenrandes der Deckplatte gedrückt, wobei sich der Haltering in den Nachbarbereichen dieser polygonalen Ecken sehnenartig verformen kann, woraus eine lokale Durchmesservergrößerung des Halteringes im Bereich einer oder mehrerer benachbarter Ecken der Deckplatte resultiert.Thanks to the polygonal contour of the outer edge of the cover plate, the retaining ring requires only very little elastic deformability, because when the retaining ring is assembled, the outer ring is pressed over a few corners of the polygonal outer edge of the cover plate, the retaining ring being able to deform like a tendon in the neighboring areas of these polygonal corners , which results in a local increase in diameter of the retaining ring in the region of one or more adjacent corners of the cover plate.

Die Ecken zwischen je zwei wenigstens angenähert geradlinigen Randteilen der Deckplatte sind vorzugsweise abgerundet.The corners between two at least approximately straight Edge parts of the cover plate are preferably rounded.

Der neue Drehteller ist weiterhin dadurch gekennzeichnet, daß der Außenrand des Halteringes an einer Vielzahl von einander beabstandeten Bereichen an der Deckplatte anliegt und zwischen je zwei solcher Anlagebereiche ein Spalt zwischen Haltering und Deckplatte gebildet wird. Die Breite dieses Spaltes ändert sich in Umfangsrichtung stetig. Sie ist im Bereich der Polygonecken null, steigt dann stetig bis zur Mitte der geradlinigen Randteile der Deckplatte an und sinkt dann in Umfangsrichtung wieder allmählich bis auf den Wert null im Bereich der nächsten Polygonecke ab.The new turntable is further characterized in that the outer edge of the retaining ring rests on a plurality of spaced apart areas on the cover plate and a gap is formed between each of such contact areas between the retaining ring and cover plate. The width of this gap changes continuously in the circumferential direction. It is zero in the area of the polygon corners, then rises steadily to the middle of the straight edge parts of the cover plate and then gradually decreases again in the circumferential direction to the value of zero in the area of the next polygon corner.

Eine weitere Ausgestaltung der Erfindung ist darin zu sehen, daß die Axialschnitt-Kontur des Außenrandes der Deckplatte wenigstens angenähert halbkreisförmig ausgebildet ist. Weiterhin ist vorzugsweise der Außenrand des Halteringes mit einer sich zur Bodenebene des Halteringes hin konisch verjüngenden Klemmfläche ausgebildet. Diese Klemmfläche legt sich an den gerundeten Polygoneckbereichen in der unteren Hälfte des Außenrandes der Deckplatte an dieser an, wobei sich der Haltering oben auf der Deckfläche der Deckplatte unmittelbar abstützt. Zwischen dieser Stützfläche des Halteringes und seiner Klemmfläche herrscht ein geringes Untermaß im Vergleich zu den entsprechenden Kontaktflächen der Deckplatte, sodaß eine gewisse Verformung des Außenrandes des Halteringes eintritt, wenn dieser an der Deckplatte montiert ist. Der Haltering wird auf diese Weise sowohl radial als auch axial an der Deckplatte verspannt, mit dem Resultat, daß die Polstermatte absolut schiebesicher an der Deckplatte festgehalten wird. Gleichwohl ist eine Demontage des Drehtellers zu Reinigungszwecken sehr leicht durchführbar, da auf den Außenrand des Halteringes nur eine abhebende Axialkraft auszuüben ist, was beispielsweise mittels zweier Finger geschehen kann. Aufgrund dieser Axialkraft und den zwischen den Polygonecken gebildeten Freiräumen zwischen Haltering und Deckplatte, kann sich der Haltering zwischen zwei Polygonecken sehnenartig strecken, woraus eine Durchmesservergrößerung des Halteringes im Bereich der Polygonecke resultiert, die ein leichtes Abheben des Halteringes von der Deckplatte erlaubt.A further embodiment of the invention can be seen in the fact that the axial section contour of the outer edge of the cover plate is at least approximately semicircular. Furthermore, the outer edge of the retaining ring is preferably formed with a clamping surface which tapers conically towards the bottom plane of the retaining ring. This clamping surface bears against the rounded polygon corner regions in the lower half of the outer edge of the cover plate, the retaining ring being supported directly on the top surface of the cover plate. Between this support surface of the retaining ring and its clamping surface there is a slight undersize in comparison to the corresponding contact surfaces of the Cover plate, so that a certain deformation of the outer edge of the retaining ring occurs when it is mounted on the cover plate. In this way, the retaining ring is clamped both radially and axially on the cover plate, with the result that the cushion mat is held securely against sliding on the cover plate. Nevertheless, disassembly of the turntable for cleaning purposes is very easy to carry out, since only a lifting axial force has to be exerted on the outer edge of the retaining ring, which can be done for example by means of two fingers. Due to this axial force and the free spaces formed between the polygon corners between the retaining ring and the cover plate, the retaining ring can stretch like a chord between two polygon corners, which results in an increase in the diameter of the retaining ring in the area of the polygon corner, which allows the retaining ring to be easily lifted off the cover plate.

Schließlich ist noch eine Ausgestaltung der Erfindung darin zu sehen, daß der im Axialschnitt hakenförmige Außenrand des Halteringes eine Umfangslippe aufweist, die den im Querschnitt konvex gerundeten Außenrand der Deckplatte untergreift und an diesem unter Vorspannung wenigstens angenähert linienförmig anliegt. Dieser klemmende Linienkontakt zwischen der Umfangslippe des Halteringes und der Deckplatte ist sowohl für den Klemmeffekt als auch für die leichte Montage und Demontage des Halteringes vorteilhaft.Finally, another embodiment of the invention is to be seen in the fact that the outer edge of the retaining ring, which is hook-shaped in axial section, has a circumferential lip which engages under the outer edge of the cover plate, which is convexly rounded in cross section, and at least approximately linearly rests against it under pretension. This clamping line contact between the peripheral lip of the retaining ring and the cover plate is advantageous both for the clamping effect and for the easy assembly and disassembly of the retaining ring.

Der Innenrand des Halteringes verjüngt sich vorzugsweise radial nach innen im Querschnitt stetig. Das innere Ende dieses Innenrandes liegt dann noch unterhalb der Oberfläche der Polstermatte in deren nichtkomprimiertem Bereich. An diesem Innenrand des Halteringes ist innenseitig eine in die Polstermatte eindringende Umfangsrippe vorgesehen, die den Halt der Polstermatte an der Deckplatte verbessert. Diese Umfangsrippe kann in Umfangsabständen unterbrochen sein.The inner edge of the retaining ring preferably tapers radially inward in cross section. The inner end of this inner edge is then still below the surface of the cushion mat in its uncompressed area. On this inside edge of the retaining ring, a circumferential rib penetrating into the cushion mat is provided on the inside, which improves the hold of the cushion mat on the cover plate. This circumferential rib can be interrupted at circumferential intervals.

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
einen Axialschnitt durch den neuen Drehteller,
FIG. 2
einen Radialschnitt längs der Linie 2-2 des Drehtellers nach FIG. 1,
FIG. 3
einen vergrößerten Axialschnitt des Drehtellers im Bereich seines Zentrallagers,
FIG. 4
einen vergrößerten Schnitt ähnlich FIG. 2, jedoch mit Darstellung eines Umfangsteils des Halteringes während des Aufdrückens auf die Deckplatte des Drehtellers und
FIG. 5
eine Schnittansicht längs der Linie 5-5 der FIG. 4.
It shows:
FIG. 1
an axial section through the new turntable,
FIG. 2nd
a radial section along the line 2-2 of the turntable according to FIG. 1,
FIG. 3rd
an enlarged axial section of the turntable in the area of its central warehouse,
FIG. 4th
an enlarged section similar to FIG. 2, but showing a peripheral part of the retaining ring while being pressed onto the cover plate of the turntable and
FIG. 5
a sectional view taken along line 5-5 of FIG. 4th

Der Drehteller 10 weist eine Bodenplatte 12, eine Deckplatte 14, eine weiche kompressible Auflagematte 16 und einen Haltering 18 auf. Die Bodenplatte 12 und die Deckplatte 14 haben je eine zentrale Bohrung, wobei diejenige der Bodenplatte gestuft ist. Beide Platten 12, 14 sind mittels eines Zentralclips 20 miteinander verbunden, der bodenseitige Federzungen aufweist, die eine Ringschulter in der gestuften Bohrung der Bodenplatte 12 untergreifen. Durch radiale Einwärtsbewegung der Federzungen des Zentralclips 20 läßt sich die Deckplatte von der Bodenplatte abheben. Die anschließende Wiedermontage erfordert lediglich die Ausrichtung der beiden Bohrungen von Bodenplatte und Deckplatte, wonach der Zentralclip 20 axial eingeschoben wird. Dabei weichen seine Federzungen automatisch nach innen aus und rasten dann selbsttätig an der Ringschulter der Bodenplatte 12 ein. Montage und Demontage sind somit ohne Werkzeug in kürzester Zeit möglich.The turntable 10 has a base plate 12, a cover plate 14, a soft compressible support mat 16 and a retaining ring 18. The base plate 12 and the cover plate 14 each have a central bore, that of the base plate being stepped. Both plates 12, 14 are connected to one another by means of a central clip 20 which has spring tongues on the bottom which engage under an annular shoulder in the stepped bore of the base plate 12. The cover plate can be lifted off the base plate by radial inward movement of the spring tongues of the central clip 20. The subsequent reassembly only requires the alignment of the two holes in the base plate and cover plate, after which the central clip 20 is inserted axially. His spring tongues automatically move inwards and then automatically snap into the ring shoulder of the base plate 12. Assembly and disassembly are possible in the shortest possible time without tools.

Die Deckplatte 14 hat eine neuartige Außenkontur, denn sie weist in gleichen Winkelabständen 18 abgerundete Ecken 22 auf, zwischen denen sich jeweils geradlinige Randteile 24 erstrecken. Die Deckplatte 14 ist also an ihrem Außenumfang polygonartig ausgebildet.The cover plate 14 has a new type of outer contour, because it has rounded corners 22 at equal angular intervals 18, between which straight edge parts 24 each extend. The cover plate 14 is thus formed polygon-like on its outer circumference.

Der Haltering 18 ist rotationssymmetrisch ausgebildet, ist also kreisförmig konturiert. Seine Innenfläche liegt lediglich in den Übergängen 22 zwischen je zwei geradlinigen Randteilen 24 der Deckplatte 14 an dieser an und zwischen je zwei dieser Übergänge 22, die ja von den abgerundeten Polygonecken gebildet sind, verbleibt ein kreissegmentförmiger Spalt 26, dessen Spaltbreite in der Mitte der geradlinigen Randteile 24 am größten ist und dann nach beiden Seiten hin stetig bis auf den Wert null im Bereich der Übergänge 22 abnimmt.The retaining ring 18 is rotationally symmetrical, that is to say it has a circular contour. Its inner surface lies only in the transitions 22 between two rectilinear edge parts 24 of the cover plate 14, and between each of these transitions 22, which are formed by the rounded polygon corners, there remains a circular segment-shaped gap 26, the gap width of which is in the middle of the straight line Edge parts 24 is largest and then steadily decreases on both sides down to the value zero in the area of the transitions 22.

Die Kombination eines kreisförmig konturierten Außenrandes des Halteringes 18 und eines polygonartig konturierten Aussenrandes der Deckplatte 14 erlaubt es, den Haltering 18 mit einer nur geringen elastischen Verformbarkeit auszubilden und ihn gleichwohl leicht an der Deckplatte 14 anklemmen und wieder von ihr lösen zu können. Zum Abheben des Halteringes 18 genügt eine axiale Abhebekraft auf den Außenrand des Halteringes in einem beliebigen Umfangsbereich. Der Haltering 18 verformt sich dann aus der in FIG. 4 gestrichelt dargestellten Kreisform und plattet sich im Bereich der geradlinigen Randabschnitte 24 der Deckplatte 14 sehnenartig ab, womit im Bereich der Übergänge 22 (Polygonecken) eine Durchmesservergrößerung eintritt, sodaß der die Deckplatte 14 untergreifende Teil des Außenrandes des Halteringes 18 nach außen verlagert wird und von der Deckplatte 14 freikommt.The combination of a circularly contoured outer edge of the retaining ring 18 and a polygonally contoured outer edge of the cover plate 14 makes it possible to design the retaining ring 18 with only a slight elastic deformability and nevertheless to be able to easily clamp it onto the cover plate 14 and detach it from it. To lift the retaining ring 18, an axial lifting force on the outer edge of the retaining ring in any circumferential area is sufficient. The retaining ring 18 then deforms from the in FIG. 4 dashed circular shape and flattened in the area of the rectilinear edge portions 24 of the cover plate 14, whereby a diameter increase occurs in the area of the transitions 22 (polygon corners), so that the part of the outer edge of the retaining ring 18 which engages under the cover plate 14 is displaced outwards and from the cover plate 14 is released.

Wie sich aus FIG. 5 ergibt, hat die Deckplatte 14 im Axialschnitt eine konvex gerundete Kontur, die hier halbkreisförmig ausgebildet ist. Der Durchmesser der Deckplatte 14 im mittleren Höhenbereich ist somit am größten und verringert sich nach oben und unten. Die Durchmesserverringerung in der unteren Hälfte der Deckplatte 14 ist wichtig, damit der Haltering 18 die Deckplatte untergreifen kann. Der Haltering 18 hat einen hakenförmigen Außenrand 28 und einen, die Auflagematte 16 übergreifenden Innenrand 30, der eine konisch aufwärtsweisende Innenfläche 32 aufweist, an der eine Umfangsrippe 34 ausgebildet ist, die formschlüssig in die Auflagematte 16 eindringt. Die Dicke des Innenrandes 30 nimmt radial nach innen stetig ab. Der Querschnitt des Innenrandes 30 ist im wesentlichen dreieckförmig. Der Außenrand 28 des Halteringes 18 hat im Axialschnitt eine im oberen Bereicch gerundete Innenfläche 36, die mit der konvexen Außenfläche 38 der Deckplatte 14 einen sichelförmigen Hohlraum 40 begrenzt. Die im Axialschnitt gerundete Innenfläche 36 des Außenrandes 28 des Halteringes 18 geht in eine konische Klemmfläche 42 über, die am unteren Ende des Haltering-Außenrandes 28 endet. Mit der Bodenfläche des Außenrandes bildet diese Klemmfläche 42 eine Umfangslippe 44, die den Außenrand 46 der Deckplatte 14 untergreift.As can be seen from FIG. 5 results, the cover plate 14 has a convexly rounded contour in axial section, which here is semicircular. The diameter of the cover plate 14 in the middle height range is therefore the largest and decreases upwards and downwards. The reduction in diameter in the lower half of the cover plate 14 is important so that the retaining ring 18 can reach under the cover plate. The retaining ring 18 has a hook-shaped outer edge 28 and an inner edge 30 which overlaps the support mat 16 and which has a conically upward-facing inner surface 32 on which a peripheral rib 34 is formed which penetrates into the support mat 16 in a form-fitting manner. The thickness of the inner edge 30 decreases continuously radially inwards. The cross section of the inner edge 30 is essentially triangular. The outer edge 28 of the retaining ring 18 has, in axial section, an inner surface 36 rounded in the upper region, which delimits a crescent-shaped cavity 40 with the convex outer surface 38 of the cover plate 14. The inner surface 36 of the outer edge 28 of the retaining ring 18, rounded in axial section, merges into a conical clamping surface 42 which ends at the lower end of the retaining ring outer edge 28. With the bottom surface of the outer edge, this clamping surface 42 forms a circumferential lip 44 which engages under the outer edge 46 of the cover plate 14.

Der Haltering 16 liegt nicht längs des gesamten Umfanges am Außenrand 46 der Deckplatte 14 an, der Kontakt besteht vielmehr nur im Bereich der Übergänge 22 zwischen je zwei geradlinigen Randteilen 24 der Deckplatte 14. Zwischen dem Innenrand 30 und dem Außenrand 28 des Halteringes 18 weist dieser eine innenseitige Stützfläche 48 auf, die ringsum auf einer komplementären ebenen Ringfläche der Deckplatte 14 aufliegt. Der Abstand zwischen dieser Stützfläche 48 und der konischen Klemmfläche 42 an der unteren Lippe 44 des Halteringes 18 ist etwas geringer dimensioniert als der entsprechende Abstand der Gegenflächen an der Deckplatte 14, sodaß im Montagezustand eine geringe Verformung der Lippe 44 des Halteringes 18 eintritt, wodurch der Haltering 18 sowohl in radialer Richtung als auch in axialer Richtung an der Deckplatte 14 festgeklemmt wird. Die Umfangslippe 44 sorgt dafür, daß die Stützfläche 48 des Halteringes axial gegen die Ringfläche der Deckplatte 14 gezogen wird.The retaining ring 16 does not lie along the entire circumference on the outer edge 46 of the cover plate 14, which is in contact rather, only in the area of the transitions 22 between two rectilinear edge parts 24 of the cover plate 14. Between the inner edge 30 and the outer edge 28 of the retaining ring 18, the latter has an inside support surface 48 which lies all around on a complementary flat annular surface of the cover plate 14. The distance between this support surface 48 and the conical clamping surface 42 on the lower lip 44 of the retaining ring 18 is dimensioned somewhat smaller than the corresponding distance of the counter surfaces on the cover plate 14, so that in the assembled state a slight deformation of the lip 44 of the retaining ring 18 occurs, whereby the Retaining ring 18 is clamped to the cover plate 14 both in the radial direction and in the axial direction. The peripheral lip 44 ensures that the support surface 48 of the retaining ring is pulled axially against the annular surface of the cover plate 14.

In FIG. 5 ist die Kontur des Außenrandes 46 in der Mitte des geradlinigen Randteils 24 der Deckplatte 14 gestrichelt dargestellt. In diesem Bereich untergreift der Außenrand 28 des Halteringes 18 die Deckplatte 14 nicht.In FIG. 5, the contour of the outer edge 46 is shown in dashed lines in the middle of the straight edge part 24 of the cover plate 14. In this area, the outer edge 28 of the retaining ring 18 does not engage under the cover plate 14.

Dank der kreissegmentförmigen Spalten 26 zwischen den geradlinigen Randteilen 28 der Deckplatte 14 und dem kreisförmig konturierten Haltering 18 ist ein Lösen des Halteringes 18 von der Deckplatte 14 mit einem geringen Fingerdruck möglich. Dabei fährt man mit dem Finger zwischen Haltering 18 und Bodenplatte 12 und drückt den Haltering 18 in einem beliebigen Umfangsbereich von der Bodenplatte 12 weg. Da der Klemmkontakt zwischen Haltering 18 und Deckplatte 14 nur während eines kleinen Umfangsbereiches innerhalb der Übergänge 22 vorhanden ist, verformt sich der Außenrand 28 des Halteringes 18 beidseitig benachbart dieser Klemmzone und zwar wird der kreisförmig konturierte Außenrand 28 sehnenartig gestreckt (FIG. 4), wobei sich der Spalt 26 in der Breite verringert. Dadurch vergrößert sich der Durchmesser des Außenrandes 28 im Bereich der Übergänge 22 und die Umfangslippe 44 kommt in diesem Bereich vom Außenrand 46 der Deckplatte 14 frei. Der Haltering 18 kann dann einfach von der Deckplatte 14 nach oben weggeschwenkt werden.Thanks to the circular segment-shaped gaps 26 between the rectilinear edge parts 28 of the cover plate 14 and the circularly contoured retaining ring 18, the retaining ring 18 can be detached from the cover plate 14 with a slight finger pressure. You run your finger between them Retaining ring 18 and base plate 12 and presses the retaining ring 18 away from the base plate 12 in any circumferential area. Since the clamping contact between the holding ring 18 and the cover plate 14 is only present within a small circumferential area within the transitions 22, the outer edge 28 of the holding ring 18 deforms on both sides adjacent to this clamping zone, namely the circularly contoured outer edge 28 is stretched like a chord (FIG. 4), whereby the gap 26 decreases in width. As a result, the diameter of the outer edge 28 increases in the area of the transitions 22 and the circumferential lip 44 is released from the outer edge 46 of the cover plate 14 in this area. The retaining ring 18 can then simply be pivoted upward away from the cover plate 14.

Claims (10)

  1. A rotary plate as a seat for the disabled, having a base plate (12), a cover plate (14) rotatably mounted on the latter, a padded mat (16) arranged on the cover plate (14) in a concentric manner, and a circular holding ring (18) which engages over the circumferential edge of the padded mat (16), is detachably secured to the cover plate (14) and also engages over the outer edge (46) of the cover plate (14), characterised in that the outer edge (46) of the cover plate (14) has a regular, polygonal circumferential contour with a plurality of edge portions (24) which are of the same length and are at least substantially rectilinear, in that the holding ring (18) is in one piece and has a resiliently deformable outer edge (28) which is hook-shaped in axial section, engages underneath the cover plate (14) at least at the transitions (22) between each two of adjacent edge portions (24) thereof and at these transitions (22) contacts with the outer edge (28) [sic- 46] of the cover plate (14) in a clamping manner.
  2. A rotary plate in accordance with Claim 1, characterised in that the corners (22) formed between each two at least substantially rectilinear edge portions (24) of the cover plate (14) are rounded.
  3. A rotary plate in accordance with Claim 1 or 2, characterised in that the outer edge (28) of the holding ring (18) contacts with the cover plate (14) at a plurality of regions (22) spaced apart along the circumference of the latter, and between every two such contact regions (22) a gap (26) is formed between holding ring (18) and cover plate (14).
  4. A rotary plate in accordance with Claim 3, characterised in that the width of the gap (26) alters in a steady manner in the circumferential direction.
  5. A rotary plate in accordance with any one of Claims 1 to 4, characterised in that the contour of the outer edge (46) of the axially-sectioned cover plate (14) is at least substantially semicircular.
  6. A rotary plate in accordance with any one of Claims 1 to 5, characterised in that the outer edge (28) of the holding ring (18) has a clamping surface (42) tapering conically towards the base plane of the holding ring (18).
  7. A rotary plate in accordance with any one of Claims 1 to 6, characterised in that the holding-ring outer edge (28) - hook-shaped in axial section - has a circumferential lip (44) which engages underneath the cover-plate outer edge (46) - convexly rounded in cross-section - and, with prestressing, rests against the outer edge (46) in an at least substantially linear manner.
  8. A rotary plate in accordance with any one of Claims 1 to 6, characterised in that the holding ring (18) has an inner supporting surface (48) in the transition region between its hook-shaped outer edge (28) and the inner edge (30) engaging over the padded mat (16), this supporting surface (48) being supported on an upper complementary counter surface of the cover plate (14).
  9. A rotary plate in accordance with any one of Claims 1 to 8, characterised in that the holding-ring inner edge (30) engaging over the padded mat (16) has on its inner surface a circumferential rib (34) penetrating into the padded mat (16).
  10. A rotary plate in accordance with any one of Claims 1 to 9, characterised in that in cross-section the inner edge (30) of the holding ring (18) tapers radially inwards in a steady manner.
EP93104199A 1993-03-16 1993-03-16 Turning plate as a seat for the disabled Expired - Lifetime EP0619994B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
ES93104199T ES2076804T3 (en) 1993-03-16 1993-03-16 ROTATING PLATE AS A SEATING SURFACE FOR DISABLED PERSONS.
AT93104199T ATE127678T1 (en) 1993-03-16 1993-03-16 TURNTABLE AS A SEAT FOR THE DISABLED.
DK93104199.0T DK0619994T3 (en) 1993-03-16 1993-03-16 Turntable for seating for disabled people
DE59300599T DE59300599D1 (en) 1993-03-16 1993-03-16 Turntable as a seat for the disabled.
EP93104199A EP0619994B1 (en) 1993-03-16 1993-03-16 Turning plate as a seat for the disabled
US08/205,943 US5441329A (en) 1993-03-16 1994-03-02 Rotatable seat
CA002119042A CA2119042A1 (en) 1993-03-16 1994-03-15 Rotatable seat
JP6071635A JP2537138B2 (en) 1993-03-16 1994-03-16 Rotating disk device as a seating surface for the physically handicapped
GR950402911T GR3017808T3 (en) 1993-03-16 1995-10-18 Turning plate as a seat for the disabled.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93104199A EP0619994B1 (en) 1993-03-16 1993-03-16 Turning plate as a seat for the disabled

Publications (2)

Publication Number Publication Date
EP0619994A1 EP0619994A1 (en) 1994-10-19
EP0619994B1 true EP0619994B1 (en) 1995-09-13

Family

ID=8212698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93104199A Expired - Lifetime EP0619994B1 (en) 1993-03-16 1993-03-16 Turning plate as a seat for the disabled

Country Status (9)

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US (1) US5441329A (en)
EP (1) EP0619994B1 (en)
JP (1) JP2537138B2 (en)
AT (1) ATE127678T1 (en)
CA (1) CA2119042A1 (en)
DE (1) DE59300599D1 (en)
DK (1) DK0619994T3 (en)
ES (1) ES2076804T3 (en)
GR (1) GR3017808T3 (en)

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GB9505300D0 (en) * 1995-03-16 1995-05-03 Strong Phillip W A rotary transfer aid
SE511162C2 (en) * 1996-11-26 1999-08-16 Volvo Ab Device for releasable attachment of objects to a mobile unit
US5904399A (en) * 1997-09-25 1999-05-18 Hanil Company Ltd. Rotary table of a seat for automobiles
US5984129A (en) * 1997-12-29 1999-11-16 Pasinski; Tom Movable paint tray assembly for applying a liquid to a roller
US6053572A (en) * 1999-03-08 2000-04-25 Doran; Michele R. Device for facilitating access to sitting position on car seat
EP1403131A3 (en) * 2002-09-27 2005-06-15 Combi Corporation Child car seat
US20040226954A1 (en) * 2003-02-24 2004-11-18 Tom Pasinski Assembly for the movement of a paint tray
DE20318391U1 (en) * 2003-11-28 2005-04-14 Lear Corporation, Southfield Swivel seat
US7159940B1 (en) 2005-07-25 2007-01-09 Jerry Mac Atkins Eccentrically rotatable swivel seat device
KR101033787B1 (en) * 2007-12-18 2011-05-13 현대자동차주식회사 Apparatus for Changing Between a Driver's Seat and a Passenger's Seat
US8302221B1 (en) 2009-03-03 2012-11-06 Pivot Assist, Llc Medical assist device with lift seat
US10857907B2 (en) 2018-04-05 2020-12-08 Sears Manufacturing Co. In-cushion seat swivel
US11389001B1 (en) * 2021-03-05 2022-07-19 Michael David Daily Back saver

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US3232662A (en) * 1965-03-25 1966-02-01 Harold C Graves Combination tray and seat apparatus
US3713619A (en) * 1970-10-28 1973-01-30 F Marty Revolvable device for aiding the movement of a partially disabled person
US4034947A (en) * 1975-07-24 1977-07-12 Anthony Geisel Rotating seat device
US4561695A (en) * 1984-02-23 1985-12-31 Michigan Seat Company Seat with foam snap-on cover
DE3835532C1 (en) * 1988-10-19 1990-02-15 Peter 7989 Eisenharz De Schmidt
US4969290A (en) * 1989-05-09 1990-11-13 Rudolph Skoretz Apparatus for even exposure of plants to sunlight
DE9006002U1 (en) * 1990-05-26 1990-08-02 Grundmann, Ernst H., 4005 Meerbusch, De
DE9113964U1 (en) * 1991-11-09 1992-01-02 Schwarz, Roland, 8970 Immenstadt, De

Also Published As

Publication number Publication date
US5441329A (en) 1995-08-15
EP0619994A1 (en) 1994-10-19
ES2076804T3 (en) 1995-11-01
CA2119042A1 (en) 1994-09-17
DE59300599D1 (en) 1995-10-19
GR3017808T3 (en) 1996-01-31
ATE127678T1 (en) 1995-09-15
DK0619994T3 (en) 1996-01-29
JP2537138B2 (en) 1996-09-25
JPH06296650A (en) 1994-10-25

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