EP0235554B1 - Stairlift - Google Patents

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Publication number
EP0235554B1
EP0235554B1 EP87101008A EP87101008A EP0235554B1 EP 0235554 B1 EP0235554 B1 EP 0235554B1 EP 87101008 A EP87101008 A EP 87101008A EP 87101008 A EP87101008 A EP 87101008A EP 0235554 B1 EP0235554 B1 EP 0235554B1
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EP
European Patent Office
Prior art keywords
stairlift
acc
carrying
bolts
rollers
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
EP87101008A
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German (de)
French (fr)
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EP0235554A3 (en
EP0235554A2 (en
Inventor
Gerd Grass
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.)
Thyssen Treppenlifte GmbH
Original Assignee
Individual
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Publication date
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Priority to AT87101008T priority Critical patent/ATE51600T1/en
Publication of EP0235554A2 publication Critical patent/EP0235554A2/en
Publication of EP0235554A3 publication Critical patent/EP0235554A3/en
Application granted granted Critical
Publication of EP0235554B1 publication Critical patent/EP0235554B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/06—Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces
    • B66B9/08—Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces associated with stairways, e.g. for transporting disabled persons
    • B66B9/0807—Driving mechanisms
    • B66B9/0815—Rack and pinion, friction rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/02—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable

Definitions

  • the invention relates to a stair lift with a load-bearing device designed as a platform or as a seat, which is slidably mounted on lower and upper support bars arranged along the stairs and is equipped with a motor-driven gear which is attached via at least one support element with bars arranged on vertical bars between the support bars inclined individual support rods cooperates.
  • European patent specification 00 19 014 has already disclosed a stair lift for use as a handicapped elevator of the generic type which, in addition to an upper and a lower support bar for supporting a load suspension device, uses a guide bar on which two idler rollers in one by means of a spindle nut on a drive spindle attack the guided bearing block.
  • the elevator can be moved along the support bars by adjusting the height of the idlers using the spindle nut.
  • vertical rungs are provided at equal intervals between the support bars, to which a segment plate is fastened approximately in the middle between the support bars.
  • a vertical drive spindle with a worm is arranged on the elevator, which works together with horizontal ribs on the segment plates.
  • the ribs on the segment plates effectively represent a developed worm wheel and, when the drive spindle rotates, cause the elevator to be adjusted in height and thus inevitably move along the support bars.
  • a particular advantage is that the desired speed of the elevator is only determined by the inclination of the support rods and that design interventions in the transmission and the speed of the drive motor are not necessary. Another important factor is that the higher speed of the known stair lifts in the curve area can not only be avoided, but can also be greatly reduced in a desirable manner.
  • the stair lift (Fig. 1) consists essentially of an upper support bar 1, which can also serve as a handrail of a banister, a lower support bar 2, which is guided close above the stairs at the ends facing the stair eye, between the two support bars 1 and 2 arranged vertical rods 4, in the central region of the vertical rods 4 attached and inclined support rods 6 and a load suspension device 8 (elevator not shown) with a motor-driven gear and an upper and lower roller cage (10, 11), each with two pairs of guide rollers 12 for Guidance of the load carrying device on the support bars 1 and 2.
  • the support bars 1 and 2 have the same dimensions and are parallel pipes which are arranged vertically one above the other and whose diameter is dimensioned in accordance with the load-bearing capacity of the stair lift.
  • the vertical bars 4 fastened between the support bars 1 and 2 are arranged at regular intervals and are bent uniformly over the major part of their length towards the stair lift, thereby creating space for driving the load-carrying device.
  • the inclined support rods 6 normally extend in the area of the stair steps (not shown) between three vertical bars 4, as shown in the right part of FIG. 1.
  • the direction of inclination of the support rods 6 is chosen to be steeper, as a result of which the support rods only extend, for example, only over a field between two vertical rods 4 or only over part of a field, as in the left part of FIG. 1 is indicated.
  • additional support rods 14 to 16 are provided, which run parallel to the support bars.
  • the gearbox housed in a gearbox housing 18 consists of two guide plates 19 and 20, for example 2 cm thick, in each of which an endless groove 22 (FIG. 3) in the form of a slender "O" with a depth of approximately 1.5 cm is incorporated.
  • the groove 22 is semicircular in the upper and lower regions and is rectilinear on both sides.
  • the two guide plates 19 and 20 are formed uniformly and arranged in the gear housing 18 (Fig. 1) at a distance of, for example, 3 cm so that the grooves on the inside lie exactly opposite one another.
  • In these grooves 22 are in a closed endless sequence on bolts 23 rotatably mounted guide sleeves 24, the length of which is precisely adapted to the distance between the guide plates 19 and 20.
  • the diameter of the bolts 23 corresponds to the width of the grooves 22.
  • the endless sequence of the guide sleeves 24 mounted on the bolts 23 is driven via a gearwheel pair 34 which is mounted in the upper part of the gear housing 18 and is composed of the gearwheels 34a and 34b, the tooth design of which is adapted to the diameter of the bolts 23 (FIGS. 1 and 3).
  • the pair of gears 34 is fixedly connected to a drive shaft 35 of the reduction gear 36 mounted in the gear housing 18 or in the guide plates 19 and 20.
  • the reduction gear 36 is attached to the side of the gear housing 18 with a motor 38.
  • the gear housing 18 is screwed on its top and bottom with an angle bracket 40 and 41, respectively.
  • the upper angle bracket 40 and the lower angle bracket 41 each have a roller cage 10 or 11 at their free ends.
  • the upper roller cage 10 is pivotally mounted on a pivot axis 43 and the lower roller cage 11 is pivotably mounted on a pivot axis 44.
  • the guide rollers 12 and 13 With the guide rollers 12 and 13 rotatably mounted in these roller cages 10 and 11, the load-bearing device 8 can be moved up or down on the support bars 1 and 2. Due to the pivotable mounting of the roller cages 10 and 11, the roller guide can continuously adapt to a variable slope of the support bars 1 and 2.
  • four guide rollers 12 and 13 are arranged so that two guide rollers 12 and 13 are mounted opposite each other on both sides of the support bars.
  • the inclined support rods 6 are arranged so that they overlap one another in such a way that in each area between the vertical rods there are two inclined support rods 6 one above the other. In this way it is ensured that when the load-bearing device 8 runs along the path formed by the support bars 1 and 2, at least two support rollers 26 are always in operative connection with the inclined support rods 6.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Types And Forms Of Lifts (AREA)
  • Handcart (AREA)
  • Control Of Eletrric Generators (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

A staircase lift includes upper and lower support girders fixedly disposed along stairs, vertical rods disposed between the support girders, inclined support rods fixed on the vertical rods, a load receiver in the form of a platform or a seat with a back panel, the load receiver being movably supporting on the upper and lower support girders, a flat drive housing disposed on the back panel of the load receiver, and a motor-driven drive disposed in the drive housing, the drive including bolts having ends supported in endless grooves formed in the drive housing, a closed endless circle of guide sleeves supported on the bolts, a pair of gear wheels driving the bolts, and a plurality of support rollers equidistantly disposed in the circle of guide sleeves, extending from the drive housing and cooperating with the bolts.

Description

Die Erfindung betrifft einen Treppenaufzug mit einer als Plattform oder als Sitz ausgebildeten Lastaufnahmeeinrichtung, die auf längs der Treppe fest angeordneten unteren und oberen Stützholmen verschiebbar gelagert und mit einem motorgetriebenen Getriebe ausgerüstet ist, das uber zumindest ein Tragelement mit an senkrechten zwischen den Stützholmen angeordneten Stäben befestigten geneigten einzelnen Tragstäben zusammenwirkt. Durch die europäische Patentschrift 00 19 014 ist bereits ein Treppenaufzug zur Verwendung als Behindertenfahrstuhl der gattungsgemäßen Art bekannt geworden, der neben einem oberen und einem unteren Stützholm für die Abstützung einer Lastaufnahmeeinrichtung einen Führungsholm verwendet, an dem zwei Tragrollen in einem mittels einer Spindelmutter auf einer Antriebsspindel geführten Lagerbock angreifen. Durch Höhenverstellung der Tragrollen mittels der Spindelmutter läßt sich der Fahrstuhl längs der Stützholme bewegen. Bei einem zweiten Ausführungsbeispiel sind anstelle des Führungsholms zwischen den Stützholmen in gleichen Abständen senkrecht stehende Sprossen vorgesehen, an denen etwa in der Mitte zwischen den Stützholmen je eine Segmentplatte befestigt ist. Wie beim ersten Ausführungsbeispiel ist am Fahrstuhl eine senkrecht stehende Antriebsspindel mit einer Schnecke angeordnet, die mit waagerecht verlaufenden Rippen auf den Segmentplatten zusammenarbeitet. Die Rippen auf den Segmentplatten stellen quasi ein abgewickeltes Schneckenrad dar und bewirken bei einer Drehung der Antriebsspindel eine Höhenverstellung des Fahrstuhls und damit zwangsweise eine Bewegung längs der Stützholme.The invention relates to a stair lift with a load-bearing device designed as a platform or as a seat, which is slidably mounted on lower and upper support bars arranged along the stairs and is equipped with a motor-driven gear which is attached via at least one support element with bars arranged on vertical bars between the support bars inclined individual support rods cooperates. European patent specification 00 19 014 has already disclosed a stair lift for use as a handicapped elevator of the generic type which, in addition to an upper and a lower support bar for supporting a load suspension device, uses a guide bar on which two idler rollers in one by means of a spindle nut on a drive spindle attack the guided bearing block. The elevator can be moved along the support bars by adjusting the height of the idlers using the spindle nut. In a second exemplary embodiment, instead of the guide bar, vertical rungs are provided at equal intervals between the support bars, to which a segment plate is fastened approximately in the middle between the support bars. As in the first embodiment, a vertical drive spindle with a worm is arranged on the elevator, which works together with horizontal ribs on the segment plates. The ribs on the segment plates effectively represent a developed worm wheel and, when the drive spindle rotates, cause the elevator to be adjusted in height and thus inevitably move along the support bars.

Diese bekannten Ausführungsformen sind verhältnismäßig kostenaufwendig, erfordern einen erheblichen Aufwand, um dem durch die Stützholme und den Führungsholm bzw. die Sprossen mit den Segmentplatten gebildeten Fahrgerüst die erforderliche Steifigkeit zu verschaffen. Der Erfindung liegt deshalb die Aufgabe zugrunde, ein neues Antriebssystem zu entwickeln, das mit geringerem Aufwand in sich eine größere Steifigkeit aufweist und einen platzsparenden Einbau in vorhandenen Treppenaufgängen ermöglicht.These known embodiments are relatively expensive and require considerable effort in order to provide the necessary rigidity for the mobile scaffold formed by the support bars and the guide bar or the rungs with the segment plates. The invention is therefore based on the object of developing a new drive system which has greater rigidity with less effort and enables space-saving installation in existing stairwells.

Die Lösung ergibt sich aus den Merkmalen des kennzeichnenden Teils des Patentansprüches 1.The solution results from the features of the characterizing part of patent claim 1.

Als besonderer Vorteil ist anzuführen, daß die jeweils gewünschte Geschwindigkeit des Fahrstuhls lediglich durch die Neigung der Tragstäbe bestimmt wird und konstruktive Eingriffe in das Getriebe und die Drehzahl des Antriebsmotors nicht erforderlich sind. Wesentlich ist weiter der Umstand, daß die höhere Geschwindigkeit der bekannten Treppenaufzüge im Kurvenbereich nicht nur vermieden, sondern sogar im wünschenswerter Weise stark reduziert werden kann.A particular advantage is that the desired speed of the elevator is only determined by the inclination of the support rods and that design interventions in the transmission and the speed of the drive motor are not necessary. Another important factor is that the higher speed of the known stair lifts in the curve area can not only be avoided, but can also be greatly reduced in a desirable manner.

Die Erfindung wird nun in einem Ausführungsbeispiel anhand der Zeichnungen im einzelnen erläutert. Es ziegen:

  • Fig. 1 eine perspektivische Darstellung des Fahrgerüsts und den Antriebsteil der Lastaufnahmeeinrichtung, teilweise geschnitten,
  • Fig. 2 eine perspektivische Darstellung des Fahrgerüsts mit einer vereinfachten Kennzeichnung einer möglichen Lage der Tragrollen auf den geneigten Tragstäben und
  • Fig. 3 ein vereinfachter Schnitt entlang der Linie 111-111 in Fig. 1.
The invention will now be explained in detail in an exemplary embodiment with reference to the drawings. Goats:
  • 1 is a perspective view of the mobile scaffold and the drive part of the load suspension device, partially in section,
  • Fig. 2 is a perspective view of the mobile scaffold with a simplified identification of a possible location of the idlers on the inclined support rods and
  • 3 shows a simplified section along the line 111-111 in FIG. 1.

Der Treppenaufzug (Fig. 1) besteht im wesentlichen aus einem oberen Stützholmen 1, der zugleich als Handlauf eines Treppengeländers dienen kann, einem unteren Stützholmen 2, der dicht über den Treppenstufen an den zum Treppenauge weisenden Enden geführt ist, zwischen den beiden Stützholmen 1 und 2 angeordneten senkrechten Stäben 4, im mittleren Bereich der senkrechten Stäbe 4 befestigten und geneigt verlaufenden Tragstäben 6 und einer Lastaufnahmeeinrichtung 8 (Fahrstuhl nicht dargestellt) mit einem motorgetriebenen Getriebe und einem oberen und unteren Rollenkäfig (10, 11) mit jeweils zwei Paar Führungsrollen 12 zur Führung der Lastaufnahmeeinrichtung an den Stützholmen 1 und 2. Die Stützholmen 1 und 2 weisen gleiche Abmessungen auf und sind parallel verlegte, senkrecht übereinander angeordnete Rohre, deren Durchmesser entsprechend der Tragkraft des Treppenaufzuges bemessen ist. Die zwischen den Stützholmen 1 und 2 befestigten senkrechten Stäbe 4 sind mit gleichmäßigen Abständen angeordnet und sind gleichförmig über den wesentlichen Teil ihrer Länge zum Treppenaufzug hin abgekröpft, wodurch Platz für den Antrieb der Lastaufnahmeeinrichtung geschaffen ist.The stair lift (Fig. 1) consists essentially of an upper support bar 1, which can also serve as a handrail of a banister, a lower support bar 2, which is guided close above the stairs at the ends facing the stair eye, between the two support bars 1 and 2 arranged vertical rods 4, in the central region of the vertical rods 4 attached and inclined support rods 6 and a load suspension device 8 (elevator not shown) with a motor-driven gear and an upper and lower roller cage (10, 11), each with two pairs of guide rollers 12 for Guidance of the load carrying device on the support bars 1 and 2. The support bars 1 and 2 have the same dimensions and are parallel pipes which are arranged vertically one above the other and whose diameter is dimensioned in accordance with the load-bearing capacity of the stair lift. The vertical bars 4 fastened between the support bars 1 and 2 are arranged at regular intervals and are bent uniformly over the major part of their length towards the stair lift, thereby creating space for driving the load-carrying device.

Die geneigt verlaufenden Tragstäbe 6 erstrekken sich im Bereich der Treppenstufen (nicht dargestellt) normalerweise jeweils zwischen drei senkrechten Stäben 4, wie im rechten Teil der Fig. 1 dargestellt ist. Im Übergangsbereich z.B. von den oberen Stufen einer Treppe zu einem ebenen Treppenabsatz wird die Neigungsrichtung der Tragstäbe 6 steiler gewählt, wodurch die Tragstäbe sich beispielsweise nur noch über ein Feld zwischen zwei senkrechten Stäben 4 oder nur über ein Teil eines Feldes erstrecken, wie im linken Teil der Fig. 1 angedeutet ist. Um in diesen Fällen die Steifigkeit und Stabilität der Tragstäbe zu sichern werden zusätzliche Haltestäb 14 bis 16 vorgesehen, die parallel zu den Stützholmen verlaufen.The inclined support rods 6 normally extend in the area of the stair steps (not shown) between three vertical bars 4, as shown in the right part of FIG. 1. In the transition area e.g. From the upper steps of a staircase to a level landing, the direction of inclination of the support rods 6 is chosen to be steeper, as a result of which the support rods only extend, for example, only over a field between two vertical rods 4 or only over part of a field, as in the left part of FIG. 1 is indicated. In order to ensure the rigidity and stability of the support rods in these cases, additional support rods 14 to 16 are provided, which run parallel to the support bars.

Das in einem Getriebegehäuse 18 untergebrachte Getriebe besteht aus zwei beispielsweise 2 cm starken Führungsplatten 19 und 20 in denen je eine endlose Nut 22 (Fig. 3) in Form eines schlanken "O" mit einer Tiefe von etwa 1,5 cm eingearbeitet ist. Die Nut 22 ist im oberen und unteren Bereich halbkreisförmig und an den beiden Seiten geradlinig gestaltet. Die beiden Führungsplatten 19 und 20 sind gleichförmig ausgebildet und im Getriebegehäuse 18 (Fig. 1) in einem Abstand von beispielsweise 3 cm so angeordnet, daß die Nuten an der Innenseite einander genau gegenüber liegen. In diesen Nuten 22 sind in einer geschlossenen endlosen Folge auf Bolzen 23 drehbar gelagerte Führungshülsen 24 geführt, die in ihrer Länge dem Abstand zwischen den Führungsplatten 19 und 20 genau angepaßt sind. Der Durchmesser der Bolzen 23 entspricht der Breite der Nuten 22.The gearbox housed in a gearbox housing 18 consists of two guide plates 19 and 20, for example 2 cm thick, in each of which an endless groove 22 (FIG. 3) in the form of a slender "O" with a depth of approximately 1.5 cm is incorporated. The groove 22 is semicircular in the upper and lower regions and is rectilinear on both sides. The two guide plates 19 and 20 are formed uniformly and arranged in the gear housing 18 (Fig. 1) at a distance of, for example, 3 cm so that the grooves on the inside lie exactly opposite one another. In these grooves 22 are in a closed endless sequence on bolts 23 rotatably mounted guide sleeves 24, the length of which is precisely adapted to the distance between the guide plates 19 and 20. The diameter of the bolts 23 corresponds to the width of the grooves 22.

In der geschlossenen endlosen Folge der auf den Bolzen 23 (Fig. 3) gelagerten Führungshülsen 24 sind in dem Ausführungsbeispiel sechs in gleichen Abständen angeordnete und aus dem Getriebegehäuse 18 herausragende Tragrollen 26 vorgesehen, die auf an Rechteckstählen 28 befestigten Bolzenstümpfen 29 (Fig. 1) drehbar gelagert sind. Die Rechteckstähle 28 (Fig. 3) sind jeweils vor zwei Führungshülsen 24 angeordnet und mit diesen fest verbunden. Die übrigen neben den Rechteckstählen 28 vorhandenen Führungshülsen sind paarweise mit kleineren Rechteckstählen 30 fest verbunden und dienen im Bereich der geradlinigen senkrechten Nut 22 zur seitlichen Abstützung der Rechteckstähle 28, die die Tragrollen 26 tragen.In the closed, endless sequence of the guide sleeves 24 mounted on the bolts 23 (FIG. 3), in the exemplary embodiment six supporting rollers 26 which are arranged at equal intervals and protrude from the gear housing 18 are provided, which are mounted on bolt stubs 29 fastened to rectangular steels 28 (FIG. 1). are rotatably mounted. The rectangular steels 28 (FIG. 3) are each arranged in front of two guide sleeves 24 and firmly connected to them. The remaining guide sleeves present in addition to the rectangular steels 28 are firmly connected in pairs with smaller rectangular steels 30 and serve in the area of the straight vertical groove 22 for lateral support of the rectangular steels 28 which carry the support rollers 26.

Der Antrieb der endlosen Folge der auf den Bolzen 23 gelagerten Führungshülsen 24 erfolgt über ein im oberen Teil des Getriebegehäuses 18 gelagertes aus den Zahnrädern 34a und 34b zusammengesetztes Zahnradpaar 34, dessen Zahngestaltung an den Durchmesser der Bolzen 23 angepaßt ist (Fig. 1 und 3). Das Zahnradpaar 34 ist mit einer im Getriebegehäuse 18 bzw. in den Führungsplatten 19 und 20 gelagerten Antriebswelle 35 des Untersetzungsgetriebes 36 fest verbunden. Das Untersetzungsgetriebe 36 ist mit einem Motor 38 seitlich am Getriebegehäuse 18 angebracht.The endless sequence of the guide sleeves 24 mounted on the bolts 23 is driven via a gearwheel pair 34 which is mounted in the upper part of the gear housing 18 and is composed of the gearwheels 34a and 34b, the tooth design of which is adapted to the diameter of the bolts 23 (FIGS. 1 and 3). . The pair of gears 34 is fixedly connected to a drive shaft 35 of the reduction gear 36 mounted in the gear housing 18 or in the guide plates 19 and 20. The reduction gear 36 is attached to the side of the gear housing 18 with a motor 38.

Das Getriebegehäuse 18 ist an seiner Ober- und Unterseite mit je einem Winkelträger 40 bzw. 41 verschraubt. Der obere Winkelträger 40 und der untere Winkelträger 41 tragen an ihren freien Enden je einen Rollenkäfig 10 bzw. 11. Der obere Rollenkäfig 10 ist mittels einer Schwenkachse 43 und der untere Rollenkäfig 11 ist auf einer Schwenkachse 44 schwenkbar gelagert. Mit den in diesen Rollenkäfigen 10 und 11 drehbar gelagerten Führungsrollen 12 bzw. 13 kann die Lastaufnahmeeinrichtung 8 an den Stützholmen 1 und 2 aufwärts oder abwärts bewegt werden. Durch die schwenkbare Lagerung der Rollenkäfige 10 und 11 kann sich die Rollenführung an eine veränderliche Steigung der Stützholme 1 und 2 laufend anpassen. In den Rollenkäfigen 10 und 11 sind jeweils vier Führungsrollen 12 bzw. 13 so angeordnet, daß auf beiden Seiten der Stützholme je zwei Führungsrollen 12 bzw. 13 einander gegenüberliegend gelagert sind.The gear housing 18 is screwed on its top and bottom with an angle bracket 40 and 41, respectively. The upper angle bracket 40 and the lower angle bracket 41 each have a roller cage 10 or 11 at their free ends. The upper roller cage 10 is pivotally mounted on a pivot axis 43 and the lower roller cage 11 is pivotably mounted on a pivot axis 44. With the guide rollers 12 and 13 rotatably mounted in these roller cages 10 and 11, the load-bearing device 8 can be moved up or down on the support bars 1 and 2. Due to the pivotable mounting of the roller cages 10 and 11, the roller guide can continuously adapt to a variable slope of the support bars 1 and 2. In the roller cages 10 and 11 four guide rollers 12 and 13 are arranged so that two guide rollers 12 and 13 are mounted opposite each other on both sides of the support bars.

Wie aus Fig. 2 ersichtlich ist, sind die geneigten Tragstäbe 6 überlappt so übereinander angeordnet, daß in jedem Bereich zwischen den senkrechten Stäben jeweils zwei geneigte Tragstäbe 6 übereinander liegen. Auf diese Weise ist sichergestellt, daß bei einem Lauf der Lastaufnahmeeinrichtung 8 längs der durch die Stützholme 1 und 2 gebildeten Bahn immer mindestens zwei Tragrollen 26 mit den geneigten Tragstäben 6 in Wirkverbindung stehen.As can be seen from Fig. 2, the inclined support rods 6 are arranged so that they overlap one another in such a way that in each area between the vertical rods there are two inclined support rods 6 one above the other. In this way it is ensured that when the load-bearing device 8 runs along the path formed by the support bars 1 and 2, at least two support rollers 26 are always in operative connection with the inclined support rods 6.

Claims (9)

1. Stairlift with a load carrying device (8) that has been designed as a platform or as a seat and which is displaceably lodged on a lower and on an upper supporting member (1, 2) and fitted with a motor-driven transmission which, via at least one carrying element (26), cooperates with inclined carrying ribs (6), fastened to the vertical bars (4) arranged between the supporting members (1 and 2), characterized in that the transmission, housed in a flat gear box (18) arranged at the rear wall of the load carrying device, comprises a closed and endless sequence of guiding bushes (24), lodged on bolts (23) reaching at both sides into endless grooves (22) of the gear box (18) and driven by motor via a pair of gearwheels (34) and further characterized in that the carrying element has been designed in the form of several carrying rollers (26) which are equally spaced over the sequence of guiding bushes (24) and protrude from the gear box (8).
2. Stairlift acc. to Claim 1, characterized in that the vertical bars (4) are arranged at equal intervals between the supporting members (1 and 2).
3. Stairlift acc. to Claim 1 or 2, characterized in that the inclined carrying ribs (6), fastened to the vertical bars (4), are overlapped in such a way that between the vertical bars (4) two each inclined carrying ribs (6) are paralleled one above the other.
4. Stairlift acc. to one of the Claims 1 to 3, characterized in that the teeth of the pair of gearwheels (34) act upon the ends of the bolts (23) and, owing to the drive by the pair of gearwheels (34), the bolts (23) with guiding bushes (24) can be displaced within the grooves (22) in the sense of rotation.
5. Stairlift acc. to one of the Claims 1 to 4, characterized in that the carrying rollers (26) are rotatably lodged on bolt stubs (29), fastened to rectangular steel parts (28), each of them being arranged before two guiding bushes (24) and firmly linked to the latter.
6. Stairlift acc. to one of the Claims 1 to 3, characterized in that the vertical bars (4) are, for the essential extent of their length, uniformly bent towards the stair well.
7. Stairlift acc. to one of the Claims 1 to 3, characterized in that at least two carrying rollers (26) have effective contact with the inclihed carrying ribs (6).
8. Stairlift acc. to one of the Claims 1 to 3, characterized in that the gear box (18). is linked, at its upper and lower side, to one each slewably lodged roller cage (10 and 11) for the guiding rollers (12 or 13) which run at the upper and lower supporting member (1 and 2).
9. Stairlift acc. to Claim 8, characterized in that two pairs of guiding rollers (12, 13) are rotatably lodged in each roller cage (10, 11).
EP87101008A 1986-01-30 1987-01-24 Stairlift Expired - Lifetime EP0235554B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87101008T ATE51600T1 (en) 1986-01-30 1987-01-24 STAIRLIFT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3602770 1986-01-30
DE19863602770 DE3602770A1 (en) 1986-01-30 1986-01-30 STAIRLIFT

Publications (3)

Publication Number Publication Date
EP0235554A2 EP0235554A2 (en) 1987-09-09
EP0235554A3 EP0235554A3 (en) 1988-11-30
EP0235554B1 true EP0235554B1 (en) 1990-04-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP87101008A Expired - Lifetime EP0235554B1 (en) 1986-01-30 1987-01-24 Stairlift

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US (1) US4756387A (en)
EP (1) EP0235554B1 (en)
AT (1) ATE51600T1 (en)
CA (1) CA1275965C (en)
DE (1) DE3602770A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3819522A1 (en) * 1988-06-08 1989-12-14 Kleindienst Gmbh Staircase lift
US5050708A (en) * 1989-11-07 1991-09-24 Wood Gregg D Wheelchair transfer mechanism
DE4122855A1 (en) * 1991-02-14 1992-08-20 Hillenkoetter & Ronsieck ELEVATOR, ESPECIALLY SLOPE ELEVATOR
US5735088A (en) * 1996-05-06 1998-04-07 Agency Of Industrial Science & Technology, Ministry Of International Trade & Industry Staircase hoist for wheelchair users
DE10011627C1 (en) * 2000-03-10 2001-10-25 Gerd Grass Drive device for stair lifts
DE202009009573U1 (en) 2009-07-14 2009-09-10 Grass, Gerd, Dipl.-Ing. Drive for stair lifts
DE202010004422U1 (en) 2010-03-31 2010-07-01 Grass, Gerd, Dipl.-Ing. Drive for vertical lifts
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US3833092A (en) * 1973-04-04 1974-09-03 Flinchbaugh Murray Corp Transport mechanism for stairway elevator
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DE3025727A1 (en) * 1980-07-08 1982-02-04 Georg 4800 Bielefeld Frey STAIRLIFT
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Also Published As

Publication number Publication date
DE3602770C2 (en) 1987-11-12
US4756387A (en) 1988-07-12
DE3602770A1 (en) 1987-08-13
ATE51600T1 (en) 1990-04-15
EP0235554A3 (en) 1988-11-30
CA1275965C (en) 1990-11-06
EP0235554A2 (en) 1987-09-09

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