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EP0894075B1 - Fahrgestell für treppenaufzug - Google Patents

Fahrgestell für treppenaufzug Download PDF

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Publication number
EP0894075B1
EP0894075B1 EP97907226A EP97907226A EP0894075B1 EP 0894075 B1 EP0894075 B1 EP 0894075B1 EP 97907226 A EP97907226 A EP 97907226A EP 97907226 A EP97907226 A EP 97907226A EP 0894075 B1 EP0894075 B1 EP 0894075B1
Authority
EP
European Patent Office
Prior art keywords
roller
skate
rollers
axis
rail
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
EP97907226A
Other languages
English (en)
French (fr)
Other versions
EP0894075A1 (de
Inventor
John Edric Bovis
Andreas Csaba Szentistvany
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.)
Stannah Stairlifts Ltd
Original Assignee
Stannah Stairlifts Ltd
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 Stannah Stairlifts Ltd filed Critical Stannah Stairlifts Ltd
Publication of EP0894075A1 publication Critical patent/EP0894075A1/de
Application granted granted Critical
Publication of EP0894075B1 publication Critical patent/EP0894075B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present invention relates to stairlifts and more particularly to a skate for supporting a chair assembly on and guiding it along a stairlift rail.
  • Such an arrangement is known for example from EP-A-0,143,737.
  • Stairlifts comprise a rail mounted along a flight of stairs, and a motorised chair assembly for travelling along that rail.
  • the chair assembly is supported on the rail by means of a carriage or skate mounted to the chair assembly, and typically comprising two spaced-apart sets of rollers.
  • a known stairlift comprises a flat rail on which the rollers run, and each set of rollers is able to turn to follow variations in the inclination of the rail and also to follow curves formed in the rail according to changes in direction of the stairway.
  • a preferred form of rail is a tubular rail of circular cross-section, which is stronger than a similarly-dimensioned flat rail and can be formed to a smaller bend radius.
  • each pair of rollers is able to turn, about said further axis or axis of turning, to follow curves in the support rail.
  • the rotary axes of the rollers remain substantially in respective planes, so that one roller of each pair continues to run on the upper side of the rail, and the other roller of that pair runs on the lower side of the rail: this ensures a firm support for the chair assembly at all times.
  • the rotary axes of the two rollers of each pair remain in respective planes which are parallel to each other, said axis of turning being perpendicular to those planes: in other words, the rollers do not displace around the longitudinal axis of the main rail.
  • Each roller may have bearing elements at its opposite ends (e.g. ball bearings engaged in respective depressions at its opposite ends), these bearing elements being engaged in arcuate slots of opposed bearing supports. These bearing elements thus provide for the roller to rotate on its rotary axis, and the bearing elements can slide within their respective arcuate slots for the roller to turn on said axis of turning.
  • each roller is rotatably mounted on an axle, the opposite ends of which are fitted with cross-pieces having arcuate outer end surfaces, these cross-pieces being engaged in arcuate slots of opposed bearing supports.
  • the two pairs of rollers are mounted to respective roller housings, and the roller housings are mounted for turning about respective parallel, horizontal axes spaced apart longitudinally of the skate.
  • Each roller housing is thus able to turn and follow the support rail, as the inclination of the support rail changes.
  • the axis of one of the roller housings is fixed, and the other roller housing is mounted on a support which is able to turn about the axis of the one roller housing: the skate is therefore able to follow variations in the inclination of the support rail whilst maintaining the chair assembly upright.
  • a stairlift comprising a chair assembly 10 supported on and guided along a main tubular rail 12 of circular cross-section, by means of a skate 20 which will be described in detail below.
  • the chair assembly 10 is propelled by an electric motor (not shown) which drives a toothed wheel 13 engaged with a corresponding rack 14 extending behind a second or auxiliary tubular rail 15.
  • a roller 16 is provided on the motor drive shaft and runs on the upper side of the second rail 15 to provide auxiliary support for the chair assembly 10: a further roller 17 runs along the front of the rail 15 to help prevent the chair assembly 10 from tipping forward.
  • the skate 20 comprises a support member 22 which is pivotally mounted to the chair chassis 19, for turning about a horizontal, transverse axis A.
  • Two roller housing 24,26 are pivotally mounted to the support member 22, for turning about the axis A and about a parallel axis B, respectively.
  • Two rollers e.g. 27,28 are rotatably mounted in each of the roller housings: as shown in Figure 1, one roller of each pair runs on the upper side of the tubular rail 12, and the other roller of the pair runs on the lower side of the rail.
  • Each roller has a concave peripheral surface, of radius of curvature corresponding to the cross-section of the rail 12.
  • a flight of stairs may include landings or other features such that the angle of inclination of the main rail 12 varies along its length.
  • the spacing of the rail 15 from the rail 12 is therefore varied along the length of the stairway to ensure that the chair assembly 10 remains upright at all positions along the stairway: it will be appreciated that there is a constant distance between the point on the main rail 12 at which the upper pair of skate rollers engage that rail, and the point on the lower or auxiliary rail 15 at which the rollers 16,17 engage that rail; thus by appropriately varying the distance of auxiliary rail 15 from the main rail 12 as the inclination of the main rail varies, the chair assembly is maintained upright as it travels along its rails.
  • each of the two pairs of skate rollers can independently follow those changes, their housings 24,26 independently turning about their respective axes A, B.
  • the stairway will include changes in direction or other features, such that the main rail 12 will include curved portions to follow those changes.
  • the skate rollers are able to pivot, as shown in Figure 3, to follow such curves in the main rail 12.
  • the rollers of each pair are mounted for rotation around respective axes C, D which extend transverse to the skate (and normally horizontally): in order to follow curves in the main rail 12, the rollers are able to turn about an axis E which is orthogonal to and intersects both roller axes C, D.
  • rollers are constrained so that their rotary axes C, D remain substantially in respective parallel planes, to which the axis E is perpendicular: axis E lies in a vertical plane containing the axis of the main rail 12 and is perpendicular to the latter axis.
  • this arrangement may be achieved using one-piece rollers, each roller e.g. 30 having a part-spherical depression in its opposite ends, receiving respective ball bearings 31: these ball bearings are in turn engaged in arcuate slots 32 in opposed bearing supports 33,34 of the respective roller housing.
  • the depressions receiving the ball bearings 30 are aligned on the rotary axis of the roller, such that the ball bearings 31 provide bearings for the roller to rotate on its axis.
  • the ball bearings 31 are able to slide within the arcuate slots 32 and so allow the roller to turn on the axis E through a limited angle, to follow curves in the main rail 12: however, it will be appreciated that the axis of rotation of the roller is maintained within a plane to which axis E is perpendicular.
  • each roller e.g. 40 is rotatably mounted on an axle 41 having a cross-piece 42 fitted in a transverse slot in each of its opposite ends.
  • each cross-piece 42 has flat, parallel opposite side surfaces and an arcuate outer end surface 43. The two members 42 are engaged in arcuate slots in the bearing supports 33,34 of the respective roller housing, to allow the roller to turn through a limited angle about the axis E.
  • each roller is able independently to turn around the axis E, although in practice the two rollers of each pair will turn in unison around that axis in order to follow the main rail 12.
  • each roller housing comprises a base 34 providing a bearing support for both rollers of that pair, and respective bearing supports 33 for the opposite ends of those rollers, the bearing supports 33 being mounted to the base 34 by means of posts 36.
  • the base 34 is cut-away or recessed at 37, to accommodate the main rail 12 where this is tightly curved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Types And Forms Of Lifts (AREA)
  • Escalators And Moving Walkways (AREA)

Claims (7)

  1. Schlitten (20) für eine Treppenliftsesselanordnung (10), wobei der Schlitten zwei voneinander beabstandete Rollenpaare umfaßt, wobei die beiden Rollen (27, 28) jedes Paares so angeordnet sind, daß sie über bzw. unter einer einen kreisrunden Querschnitt aufweisenden Stützschiene (12) des Treppenlifts angeordnet sind, wobei die beiden Rollen (27, 28) jedes Paares um jeweilige, quer zu dem Schlitten verlaufende Achsen (C, D) drehbar sind und die gegenüberliegenden Enden jeder Rolle (27 oder 28) jedes Rollenpaares mit jeweiligen, einander gegenüberliegenden Stützgliedern (33, 34) so in Eingriff stehen, daß sich die Rolle (27 oder 28) bezüglich ihrer Stützglieder (33, 34) um eine weitere Achse (E) drehen kann, die die Drehachsen (C, D) des Rollenpaares (27, 28) schneidet und orthogonal dazu verläuft, aber so eingeschränkt ist, daß ihre Drehachse (C oder D) im wesentlichen in einer Ebene bleibt, zu der die weitere Achse (E) senkrecht verläuft.
  2. Schlitten nach Anspruch 1, bei dem jede Rolle (27 oder 28) an ihren gegenüberliegenden Enden vorstehende Teile umfaßt, die in in den einander gegenüberliegenden Stützgliedern (33, 34) ausgebildete, bogenförmige Schlitze (32) eingreifen.
  3. Schlitten nach Anspruch 2, bei dem jede Rolle (27 oder 28) an ihren gegenüberliegenden Enden Lagerelemente aufweist, die in jeweiligen bogenförmigen Schlitzen (32) in Eingriff stehen, um die Drehung der Rolle um ihre Achse (C oder D) zu gewährleisten und ein Drehen der Rolle um ihre weitere Achse (E) zu ermöglichen.
  4. Schlitten nach Anspruch 3, bei dem die Lagerelemente Kugellager (31) umfassen, die in jeweiligen Vertiefungen an gegenüberliegenden Enden der jeweiligen Rollen (27, 28) in Eingriff stehen.
  5. Schlitten nach Anspruch 2, bei dem jede Rolle (27 oder 28) eine Achse (41) enthält, deren gegenüberliegende Enden mit Querstücken (42) versehen sind, die bogenförmige, äußere Endflächen (43) aufweisen, wobei die Querstücke in jeweiligen bogenförmigen Schlitzen (32) in Eingriff stehen, um ein Drehen der Rolle um die weitere Achse (E) zu gestatten.
  6. Schlitten nach einem der vorhergehenden Ansprüche, bei dem die beiden Rollenpaare mittels ihrer jeweiligen, gegenüberliegenden Stützglieder (33, 34) an jeweiligen Rollengehäusen (24, 26) angebracht sind und die Rollengehäuse (24, 26) zur Drehung um jeweilige, parallele, horizontale Achsen (A, B), die in Längsrichtung des Schlittens voneinander beabstandet sind, angebracht sind.
  7. Schlitten nach Anspruch 6, bei dem die Achse (A) eines der Rollengehäuse (24) festgelegt ist, wobei das andere Rollengehäuse (26) an einer Stütze (22) angebracht ist, die sich um die Achse (A) des einen Rollengehäuses (24) drehen kann.
EP97907226A 1996-04-20 1997-03-19 Fahrgestell für treppenaufzug Expired - Lifetime EP0894075B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9608244 1996-04-20
GBGB9608244.1A GB9608244D0 (en) 1996-04-20 1996-04-20 Stairlift skate
PCT/GB1997/000747 WO1997039972A1 (en) 1996-04-20 1997-03-19 Stairlift skate

Publications (2)

Publication Number Publication Date
EP0894075A1 EP0894075A1 (de) 1999-02-03
EP0894075B1 true EP0894075B1 (de) 2000-01-12

Family

ID=10792421

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97907226A Expired - Lifetime EP0894075B1 (de) 1996-04-20 1997-03-19 Fahrgestell für treppenaufzug

Country Status (5)

Country Link
EP (1) EP0894075B1 (de)
JP (1) JP2000508612A (de)
DE (1) DE69701137T2 (de)
GB (1) GB9608244D0 (de)
WO (1) WO1997039972A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1008427C2 (nl) * 1998-02-26 1999-08-30 Ooms Otto Bv Wiel- en stoeleenheid voor een traplift.
NL1014396C2 (nl) * 2000-02-16 2001-08-20 Freelift Bv Inrichting voor transport langs helling of trap.
CN105692398B (zh) * 2016-04-28 2018-11-13 浙江非常道楼道电梯有限公司 楼道电梯及其驱动机构
GB2565072A (en) * 2017-07-31 2019-02-06 Stannah Stairlifts Ltd Improvements in or relating to drive systems

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2701981C2 (de) * 1977-01-19 1986-01-02 Günter 4800 Bielefeld Hätte Treppenfahrstuhl
DE3334476A1 (de) * 1983-09-21 1985-04-11 César Arth Rigert Foerdersystem zur ueberwindung von hoehenunterschieden
EP0137577A1 (de) * 1983-10-10 1985-04-17 Antony Stopher Treppenaufzug
SE9401486D0 (sv) * 1994-05-01 1994-05-01 Bengt Johansson Styrgejdarrangemang och åtgärder vid trapphissar

Also Published As

Publication number Publication date
EP0894075A1 (de) 1999-02-03
WO1997039972A1 (en) 1997-10-30
DE69701137T2 (de) 2000-09-21
DE69701137D1 (de) 2000-02-17
GB9608244D0 (en) 1996-06-26
JP2000508612A (ja) 2000-07-11

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