EP0839751B1 - A lift assembly and a method for installing a rail system - Google Patents

A lift assembly and a method for installing a rail system Download PDF

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Publication number
EP0839751B1
EP0839751B1 EP97203498A EP97203498A EP0839751B1 EP 0839751 B1 EP0839751 B1 EP 0839751B1 EP 97203498 A EP97203498 A EP 97203498A EP 97203498 A EP97203498 A EP 97203498A EP 0839751 B1 EP0839751 B1 EP 0839751B1
Authority
EP
European Patent Office
Prior art keywords
lift
rail system
guides
guide
staircase
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
EP97203498A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0839751A1 (en
Inventor
Alex Ooms
Otto Ooms
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.)
Otto Ooms BV
Original Assignee
Otto Ooms BV
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
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Application filed by Otto Ooms BV filed Critical Otto Ooms BV
Publication of EP0839751A1 publication Critical patent/EP0839751A1/en
Application granted granted Critical
Publication of EP0839751B1 publication Critical patent/EP0839751B1/en
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
    • B66B9/0846—Guide rail
    • 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
    • B66B9/06—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
    • B66B9/0838—Levelling gears

Definitions

  • the invention relates to a lift assembly comprising a rail system and a lift being capable of movement along said rail system, for example a chair lift for a disabled person, whereby said lift can move upwards at an angle, at least along part of its path, said rail system comprising two guides in the form of tubes having a substantially round annular cross-section, one being provided substantially above the other, whereby the vertical spacing between said guides depends on the angle of inclination of said guides and whereby both guides are attached to supporting elements which are secured to a wall or to steps of a staircase.
  • a lift assembly is disclosed in WO-A-92/14673.
  • This type of lift may be used to convey a disabled person, who is unable to use the staircase, upwards or downwards along said staircase.
  • the rail system is thereby mounted along the staircase in such a manner that a lift can move along the staircase, said lift being positioned above said staircase during said movement.
  • the rail along which the lift moves may for example be secured to a wall along the staircase, but it may also be mounted on supports which are secured to the steps on one side of the staircase.
  • the lift may be in the form of a chair, in which a person may be seated, or consist of a platform onto which a wheelchair can be moved. Also other lift forms are possible.
  • the rail system may consist of a straight assembly of sections, which is mounted at the same angle as the staircase.
  • the lift is connected to the rail system in that it engages the upper and lower guides of the rail system via guide units mounted on the lift, whereby the lift takes up a substantially straight position at all times, that is, at an angle with respect to the rail system.
  • the rail system may furthermore be provided with a rack, which is capable of cooperating with a gear connected to the lift, so that when the gear is driven by means of an electromotor provided in the lift, the lift is moved along the rail system.
  • a staircase does not consist of a single straight part, by it may comprise different angles of inclination at different places, it may comprise a horizontal part and it may make one or more bends.
  • the rail system must be provided along the staircase in such a manner that the lift will take up a straight position at all times during its movement along the rail system.
  • the position of the lift with respect to the rail system is determined by the spacing between the guides. Consequently said spacing must vary such that the lift will remain in a straight position at all times, irrespective of the angle of inclination of the rail system. That is, the two guides will be spaced less far apart when the staircase, and thus the rail system, is inclined at a steeper angle.
  • said staircase When a lift assembly is to be installed along a certain staircase, said staircase must be measured very precisely beforehand, after which the shape and the construction of the rail system can be computed on the basis of said measurement. Generally the shape and the dimensions of the rail system will thereby vary along its length. In fact the rail system is assembled and made to size as a whole at the factory, or in parts if it should become too voluminous to transport, transported to the staircase in question and installed along the staircase there. In practice the rail system is always assembled at the factory by means of welded joints, partly because it is thus ensured that all dimensions of the rail system remain unchanged at all times.
  • Drawbacks of known lift assemblies are the fact that they must be made precisely to size on the basis of complicated calculations, requiring error-free measuring of the staircase, and that reuse of the system for another lift assembly is hardly possible, if at all, in the event that a rail system has to be removed from a house.
  • the object of the invention is to provide a lift assembly enabling reuse of the rail system, at least to a large extent. Particularly because of the fact that in some cases a lift assembly will be present in a house for a short time only, after which it must be removed again, the possibility of reusing a considerable part of such a lift assembly offers major advantages.
  • each guide is detachably connected to said supporting elements and each guide consists of a number of detachably interconnected tube sections.
  • Such a detachable interconnection may be effected by interposing a coupling element, which is slid into one end of each tube section, after which a fixation may take place in that screws are passed through the tube sections into the coupling element.
  • the coupling elements may also be secured in the tube sections by means of a clamped fit.
  • the tube sections may consist of straight tube sections and bent tube sections, which are detachably interconnected by said coupling elements and which are likewise detachably connected to the supporting elements. Because straight and bent tube sections are utilized, each tube section may be used to form another rail system after the rail system has been dismantled, possibly in combination with tube sections from other rail systems that have been used before. Furthermore all components of the lift assembly can be made to size in situ, using simple hand-operated tools.
  • a rack may be detachably secured to the supporting elements, and that near the lower guide.
  • the rack and/or gear meshing therewith referred to herein may comprise teeth of any desired shape.
  • a gear is meant comprising teeth in the shape of axial pins, which mesh with correspondingly shaped teeth of the rack.
  • the invention furthermore relates to a method for installing a rail system as defined in the claims.
  • FIG 1 is a perspective and schematic view of a rail system and also an exploded view showing the parts of said rail system.
  • a number of supporting elements 2 are mounted on a staircase 1.
  • Each of said supporting elements 2 comprises two legs 3, 4, said legs at their downwardly extending ends being provided with bases 5, which may be secured to the steps of a staircase, for example by means of screws.
  • the legs 3, 4 may thereby be provided with an additional tube section 46 for adjusting the length of the leg. This will be explained in more detail with reference to Figure 5.
  • Each supporting element 2 is secured to two successive steps, whereby a plate-shaped intermediate piece 6 is placed under the base 5 of the shorter leg 4, said intermediate piece 6 engaging around the longer leg 3 with one end. In this manner the attachment of the supporting element 2 is strenghtened.
  • a supporting element 2 is placed on the horizontal floor 7 as well, whereby the two legs of said element have the same length.
  • Each supporting element 2 is provided with two securing points 8, 9, to which the lower guide 12 and the upper guide 13 can be secured by means of securing elements 10, 11.
  • the position of the securing points 8 and 9 is the same for all supporting elements 2. It will be apparent that this location and also the shape of the securing elements 10 and 11 determine the relation between the spacing between the guides 12, 13 and the angle of inclination of said guides. This spacing between the guides 12, 13 must be attuned to the construction of the lift to be moved along the rail system, such that said lift will remain in a straight position while moving along its path.
  • the rail system according to Figure 1 is connected to the floor 15.
  • the rail system extends beyond the floor 7.
  • each guide 12, 13 is thereby shown to be assembled from a number of straight tube sections and a number of bent tube sections.
  • Said tube sections are interconnected by coupling elements 16, which may be slid into the ends of two tube sections connecting to each other.
  • the interconnection of the tube sections may be strong enough per se, because the coupling elements are provided with a clamped fit, it is also possible, however, to secure the ends of the tube sections to the coupling elements by means of screws.
  • Figure 2 is a view of a lift assembly provided on a staircase 1, whereby the rail system of said assembly corresponds with the rail system described with reference to Figure 1.
  • the supporting elements 2 are secured to successive steps of the staircase 1.
  • a supporting element 2 is provided on the horizontal part 17.
  • Figure 2 shows how the spacing between the guides 12, 13 changes in dependence on the inclination of said guides. This dependence is determined by the position of the securing points 8 and 9 of the supporting elements 2 and by the shape of the securing elements, of which only securing element 10 is shown in Figure 2.
  • Upper guide 13 is secured to supporting element 2 in such a manner, that the central axis of guide 13 intersects the central axis of securing point 9.
  • the securing element 11 which is not shown in Figure 2, is capable of rotating movement about a horizontal axis of rotation through securing point 9, to which securing element 11 the upper guide 13 can be secured.
  • the lower guide 12 is secured to said securing element 10 in such a manner, that the central axis of said lower guide 12 crosses the horizontal axis of rotation through securing point 8 at some distance therefrom. It will be apparent that the position of securing points 8, 9 and the shape of the securing elements 10, 11 effect a certain relation between the spacing between the two guides 12, 13 on the one hand and the angle of inclination of said guides on the other hand.
  • Figure 2 shows a lift, on which a chair is placed in order to be able to move a handicapped person along the staircase in seated position.
  • the lift which is shown in rear view, is provided with a back support 18, two arm supports 19 and a seat 20.
  • the lift is provided with a frame 21, to which two guide units are secured, which are capable of rotating movement about a horizontal axis with respect to frame 21.
  • the lower guide unit 22 is provided with a guide wheel 24, which can roll on guide 12 with a concave running surface.
  • the lower guide unit 22 is furthermore provided with a second guide wheel 25, which can likewise roll on guide 12.
  • the guide wheels 24, 25 are interconnected in such a manner that they can jointly rotate about the central axis of guide wheel 24.
  • the lift drive is not shown in Figure 2.
  • Said drive may consist of a rack, which may be secured to the securing elements 10 in front of the lower guide 12, seen in Figure 2, and which may have upwardly directed teeth. Said teeth can mesh with a gear positioned in front of guide wheel 24, seen in Figure 2, which is driven via a shaft, about which the lower guide unit 22 can rotate.
  • the drive just described is shown in Figure 4 and will be explained in more detail with reference to said Figure.
  • frame 21 is provided with an upper guide unit 23 comprising guide wheels 26 and 27, which both have a concave running surface and which can roll on upper guide 13.
  • Guide unit 23 is capable of rotating movement with respect to frame 21 about a substantially horizontal axis, which lies in the same plane as the axes of guide wheels 26 and 27, said axis of rotation also intersecting the central axis of upper guide 13.
  • the upper guide unit 23 is furthermore provided with two guide wheels 48, 49, which are positioned at some distance from the guide wheels 26 and 27. As a result of this the lift engages the rail system in three points, which results in an adequate stability.
  • Figure 3 shows an alternative embodiment of the lift, wherein a lower guide unit 22 being identical to the one shown in Figure 2 is secured to frame 21.
  • the upper guide unit 23 is different from the one shown in Figure 2, however, because the guide unit 23 of Figure 3 only comprises two guide wheels 26, 27.
  • a third guide unit 28 is provided in order to obtain a stable connection between the lift and the rail system, which third guide unit engages the upper guide 13.
  • Said third guide unit 28 is capable of rotating movement with respect to frame 21 about a horizontal axis, which intersects the central axis of upper guide 13, but in addition to that said third guide is capable of moving in vertical direction along frame 21, for which purpose guide unit 28 is mounted in vertical guide means, for example consisting of a vertical bar 29, along which the guide unit 28 can move.
  • Figure 4 shows a detail wherein guide units 22, 23 are illustrated in partial sectional view, as is part of the rail system.
  • FIG. 1 As part of the rail system a supporting element 2 is shown, with a lower guide unit 10 and an upper guide unit 11 secured thereto.
  • the Figure shows in sectional view how lower guide unit 10 is connected to a section 32 of supporting element 2 by means of a screw 31.
  • Securing element 10 can be fixed in various angular positions with respect to axis of rotation 33 thereby.
  • Axis of rotation 33 coincides with securing point 8 according to Figure 2.
  • securing element 10 Attached to securing element 10 is lower guide rail 12, on which a guide wheel 24 and a guide wheel 25 can roll.
  • Guide wheel 25 is capable of rotating movement in a support 34, which support 34 is capable of rotating movement about shaft 35 of electromotor 36, which forms the lift drive.
  • Guide wheel 24 is likewise capable of rotating movement about shaft 35.
  • Gear 37 in this embodiment consisting of two parallel discs, between which pins forming the teeth are provided, is fixedly mounted on shaft 35, so that said gear 37 can be driven by electromotor 36. Gear 37 thereby engages in a teeth rack 38, which is connected to securing portion 39 of securing element 10 by means of screws.
  • gear 37 is mounted directly on the shaft of electromotor 36, but it is also possible for the gear 37 to be driven by an electromotor via a reduction gear.
  • Guide 13 is connected to the upper securing element 11, and that in such a manner that the axis of rotation 40, about which securing element 11 can rotate before being fixed to supporting element 2, intersects the central axis of guide 13.
  • Guide 13 is engaged by two guide wheels 26, 27, which are both rotatably journalled in guide unit 23, which is freely rotatable about axis of rotation 41.
  • Figure 4 shows the situation wherein the position of the lift on the rail system is such that the axis of rotation 33 of securing element 10 coincides with the axis of rotation 42 of the lower guide unit, and whereby the axis of rotation 40 of the upper securing element 11 coincides with the axis of rotation of the upper guide unit 23.
  • FIG. 5 is a more detailed view of the rail system in assembled condition.
  • the lower guide 12 is thereby fixed to securing element 10 by means of a bolt 43, because securing element 10 is provided with a hole, through which bolt 43 may extend, and guide 12 is provided with a threaded hole, into which bolt 43 can be screwed.
  • securing the guides 12, 13 to securing elements 10, 11 in this manner the tubes forming the guides 12, 13 can be reused without the threaded holes being objectionable thereby.
  • Said holes may thereby be covered up by threading a screw therein.
  • Figure 6 substantially corresponds with Figure 3, but in this embodiment the third guide unit 52, which is capable of movement in vertical direction along guide 53, is positioned in such manner as to engage lower guide 12.
  • An important advantage of this is that the path of movement of guide unit 53 in Figure 6 is shorter than the path of movement 28 in Figure 3.
  • Supporting element 2 is provided with a section 32, in which the securing element 10 is fixed by means of bolt 31, and that in the desired angular position with respect to the central axis of bolt 31.
  • said securing may take place in several other ways in order to achieve the same effect.
  • upper guide 13 is secured to supporting element 2.
  • a bolt 44 is screwed into guide 13 thereby, thus fixing guide 13 to securing element 11 as well as fixing securing element 11 to supporting element 2.
  • Figure 5 moreover shows the manner in which the length of leg 3, 4 can be adjusted.
  • end tube end 45 of supporting element 2 is slid into a tube section 46, which tube section 46 is slid over an upwardly directed stub of base 5.
  • the tube ends 45 of the supporting elements may all have a standard length thereby, whilst the height of supporting element 2 is determined by the length of tube section 46, which can readily be cut to the required length.
  • the interconnection between tube end 45 and tube section 46 may be effected in various ways, for example by passing a bolt through both sections.
  • the tube sections may be cut to the required length by means of simple techniques, which can be carried out with hand-operated tools. Then the tube sections are linked together by means of coupling elements, which are slid into two abutting tube sections.
  • the threaded holes for securing the guides may be provided therein by means of tools, which may be specially adapted to that end, which tools are supported on the securing elements occupying the correct position.
  • the dismantling of the rail system can take place in a simple manner, such that the parts can be reused after being disassembled.
  • the used parts may thereby be sorted and stored until certain parts can be reused.
EP97203498A 1994-12-23 1995-12-20 A lift assembly and a method for installing a rail system Expired - Lifetime EP0839751B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL9402200A NL9402200A (nl) 1994-12-23 1994-12-23 Liftsamenstel en een werkwijze voor het aanbrengen van een railsysteem.
NL9402200 1994-12-23
EP95942784A EP0809599B1 (en) 1994-12-23 1995-12-20 A lift assembly and a method for installing a rail system

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP95942784A Division EP0809599B1 (en) 1994-12-23 1995-12-20 A lift assembly and a method for installing a rail system
EP95942784.0 Division 1996-07-04

Publications (2)

Publication Number Publication Date
EP0839751A1 EP0839751A1 (en) 1998-05-06
EP0839751B1 true EP0839751B1 (en) 2000-09-13

Family

ID=19865066

Family Applications (3)

Application Number Title Priority Date Filing Date
EP97203498A Expired - Lifetime EP0839751B1 (en) 1994-12-23 1995-12-20 A lift assembly and a method for installing a rail system
EP98202906A Revoked EP0884266B1 (en) 1994-12-23 1995-12-20 A lift assembly
EP95942784A Expired - Lifetime EP0809599B1 (en) 1994-12-23 1995-12-20 A lift assembly and a method for installing a rail system

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP98202906A Revoked EP0884266B1 (en) 1994-12-23 1995-12-20 A lift assembly
EP95942784A Expired - Lifetime EP0809599B1 (en) 1994-12-23 1995-12-20 A lift assembly and a method for installing a rail system

Country Status (6)

Country Link
EP (3) EP0839751B1 (nl)
AT (3) ATE196284T1 (nl)
BE (1) BE1009020A3 (nl)
DE (4) DE69518860T2 (nl)
NL (1) NL9402200A (nl)
WO (1) WO1996020125A1 (nl)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9822809D0 (en) * 1998-10-19 1998-12-16 Stannah Stairlifts Ltd Improvements in or relating to stairlifts
NL1011547C2 (nl) * 1999-03-12 2000-09-14 Ooms Otto Bv Traplift.
US6155766A (en) * 1999-09-07 2000-12-05 Storage Technology Corporation Small library robotics guidance mechanism
JP2004520249A (ja) * 2001-02-12 2004-07-08 スタナー ステアリフツ リミテッド 階段昇降機用レール及びキャリッジ
DE102004049852B4 (de) * 2004-10-13 2008-11-27 Frank Scholz Hangaufzug
DE502005007116D1 (de) * 2005-05-19 2009-05-28 Hoyer Gmbh Personen-fördervorrichtung zur überwindung von höhenunterschieden, insbesondere schwimmbadlifter
GB0920567D0 (en) * 2009-11-24 2010-01-06 Acorn Mobility Services Ltd Lift assembly
GB2519100A (en) 2013-10-09 2015-04-15 Island Mobility Ltd Stairlift component and kit
GB2520947B (en) * 2013-12-03 2018-09-05 Stannah Stairlifts Ltd A method and apparatus for forming a stairlift rail from tubular sections
GB2529132B (en) * 2014-05-30 2020-08-12 Stannah Stairlifts Ltd Improvements in or relating to stairlifts
GB2535545A (en) * 2015-02-23 2016-08-24 Handicare Accessibility Ltd Stairlift system
EP3153453B1 (en) 2015-10-09 2020-02-19 Devi-Group B.V. A method for the assembly of a stairlift guide rail
CN105645225A (zh) * 2015-12-12 2016-06-08 无锡夕阳康科技有限公司 一种简便的遥控楼梯椅
CN113666224B (zh) * 2021-08-30 2022-10-25 太原理工大学 一种多自由度助力运物一体机

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Publication number Priority date Publication date Assignee Title
NL7212744A (nl) * 1972-09-20 1974-03-22
DE2554033C3 (de) * 1975-12-02 1980-06-04 Willy Huenibach Bei Thun Habegger (Schweiz) Einschienen-Zahnradbahn
US4262773A (en) * 1979-07-13 1981-04-21 Basham Billy G Portable scaffold
DE3819522A1 (de) * 1988-06-08 1989-12-14 Kleindienst Gmbh Treppenlift
IT1234715B (it) * 1989-04-19 1992-05-26 Vimec Srl Impianto di risalita e discesca scale per inabili
FR2668439A1 (fr) * 1990-10-24 1992-04-30 Financ Magnytoise Soc Dispositif de transport de charges dans une cage d'escalier par exemple.
DE4122855A1 (de) * 1991-02-14 1992-08-20 Hillenkoetter & Ronsieck Aufzug, insbesondere schraegaufzug
GB9111153D0 (en) * 1991-05-23 1991-07-17 Grorud Bison Bede Ltd Stairlift and rail for stairlift

Also Published As

Publication number Publication date
DE29520175U1 (de) 1996-05-23
DE69518860D1 (de) 2000-10-19
DE69508438T2 (de) 1999-10-28
EP0884266B1 (en) 2000-03-01
BE1009020A3 (nl) 1996-10-01
EP0809599A1 (en) 1997-12-03
WO1996020125A1 (en) 1996-07-04
DE69518860T2 (de) 2001-04-12
EP0809599B1 (en) 1999-03-17
ATE196284T1 (de) 2000-09-15
DE69508438D1 (de) 1999-04-22
EP0884266A1 (en) 1998-12-16
ATE190040T1 (de) 2000-03-15
EP0839751A1 (en) 1998-05-06
ATE177717T1 (de) 1999-04-15
DE69515349T2 (de) 2000-10-19
NL9402200A (nl) 1996-08-01
DE69515349D1 (de) 2000-04-06

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