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WO2007068126A1 - Ensemble elevateur vertical - Google Patents

Ensemble elevateur vertical Download PDF

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Publication number
WO2007068126A1
WO2007068126A1 PCT/CA2006/002098 CA2006002098W WO2007068126A1 WO 2007068126 A1 WO2007068126 A1 WO 2007068126A1 CA 2006002098 W CA2006002098 W CA 2006002098W WO 2007068126 A1 WO2007068126 A1 WO 2007068126A1
Authority
WO
WIPO (PCT)
Prior art keywords
vertical
vertical lift
screw
frame
lift
Prior art date
Application number
PCT/CA2006/002098
Other languages
English (en)
Inventor
Hong Lam
Original Assignee
Thomson & Leonard
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 Thomson & Leonard filed Critical Thomson & Leonard
Publication of WO2007068126A1 publication Critical patent/WO2007068126A1/fr

Links

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
    • B66B9/02—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable
    • B66B9/025—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable by screw-nut drives
    • 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

Definitions

  • the present invention relates generally to the field of vertical lifts, and in particular, to an improved lift mechanism.
  • Stairways employed in buildings and other structures present difficulties to non-ambulatory individuals.
  • a non-ambulatory individual confined to a personal vehicle such as a wheelchair cannot easily negotiate common stairwells.
  • separate elevator lifts, moving chair arrangements, or ramps are often provided.
  • stair structures extending a vertical distance that is less than a building story, such as those typically used near the entrance to a building a separate elevator lift is not always practical, particularly in outdoor environments.
  • separate ramps or moving chair arrangements may be provided which facilitate vertical travel by a personal vehicle.
  • suitable ramps consume relatively large amounts of space.
  • existing buildings must often be substantially altered to accommodate the installation of a ramp.
  • space constraints within or surrounding the building make installation of a ramp impossible.
  • Moving chair arrangements offer a solution in such low rise environments.
  • Moving chair arrangements comprise a chair that slides diagonally up and down the stairway. Such arrangements require that the personal vehicle be separately transported up or down the stairway. Because personal vehicles can be quite heavy, separate transport of the personal vehicle can be difficult. Moreover, the movable chair itself, when not in use, still occupies stairway space and thus dictates the appearance of the staircase.
  • Various motive forces can be utilized for raising or lowering the platform including hydraulic lifting systems, pneumatic lifting systems, scissor-jack lifting devices, or the like.
  • a particularly common lifting motive force is an electric motor which uses a screw drive connected to a frame that supports the platform.
  • an electric motor is used to rotate an upright fixed screw which passes through a nut in engagement with the screw, and fixed in the middle of a platform frame. As the screw is rotated by the motor, the nut is forced to move up or down and carries the platform with it.
  • prior art vertical lifts typically are custom manufactured to be used in either a "straight-through” configuration, where the user enters the platform area from one side, and exits the platform area by moving directly through in a straight line, or is used in a corner configuration wherein the user enters from one direction, and turns typically 90 degrees to exit the platform.
  • both types of units must be stocked.
  • the present invention fulfills the above need, as well as others, by providing a vertical lift assembly which provides a multiple screw arrangement, is manufactured as a series of modular components, and/or provides a flat platform with a modular end plate that can be easily moved from one side to an end in order to provide the ability to convert the enclosed vertical lift from a straight-through configuration to a corner configuration.
  • the present invention provides a twin screw vertical lift assembly comprising; a support structure with a base for housing and supporting said twin screw vertical lift assembly components; a raisable frame which can be moved between a raised and a lowered position; an essentially flat horizontal platform resting on said raisable frame; at least two screw drive systems located within said support structure, each screw drive system comprising a fixed vertical screw in operative engagement with a nut which is operatively fixed to said raisable frame so that rotation of said fixed vertical screw causes said raisable frame to be raised or lowered; and a motive force for rotation of said vertical screw of said screw drive system, wherein said motive force is proved by a single motor which motor is operatively connected to all of said fixed vertical screws by a locked linkage assembly.
  • the locked linkage assembly is provided by a toothed belt, a chain and sprocket or a fixed gear arrangement wherein rotational movement of the motor output shaft results in an equal movement of all of the vertical screws.
  • non-locked linkage assemblies such as a plain flat belt, or a simple cross-sectional V- shaped belt
  • slippage of the screw drive systems, relative to one another is avoided.
  • a synchronized movement of the vertical screws is provided.
  • the number of vertical screws is preferably between 2 and 5, but most preferably, two vertical screws are used in a twin screw configuration.
  • a transformable vertical lift assembly which can be easily transformed from a straight-through configuration to a corner configuration.
  • the present invention also provides a transformable vertical lift comprising, a raisable frame, with an attached, essentially horizontal and flat, four sided platform, which frame is operatively connected to a motive force for raising and lowering said frame from a lowered position to a raised position, a support structure for supporting said vertical lift assembly and housing at least part of said motive force, a first side of said platform adjacent to said support structure, a second side opposite to said first side, a moveable enclosure panel which is capable of extending above said platform on either said second side or on a third side adjacent to said second side, and at least two attachment means, one on either said second side or said third side, wherein said movable enclosure panel can be attached to either of said attachment means on said second side or said third side in order to provide either a straight-through configuration or a corner configuration, respectively for passing through said vertical lift.
  • the transformable vertical lift additionally comprises at least one fixed enclosure panel affixed to said frame which fixed enclosure panel extends above said platform on said first side of said platform and is located between said frame and said support structure.
  • this design can use a single screw configuration.
  • multiple screw configuration be used that includes at least two vertical screws with the arrangement described hereinabove.
  • the present invention also provides a vertical lift assembly wherein the component parts of the two vertical lift assemblies described hereinabove are provided as a plurality of component pieces which allows the vertical lifts of the present invention to be assembled on site.
  • Figure 1 is a perspective view of the vertical lift assembly of the present invention, which is shown with twin screw arrangement
  • Figure 2 is a side view of the support panel used in the embodiment of Fig. 1;
  • Figure 3 is a. cross sectional view of a portion of the support panel in Figure 2 when viewed from the line designated as 3-3;
  • Figure 4 is perspective view of a portion of one of the twin screws
  • Figure 5 is a side view of a portion of one of the twin screws when attached to a raisable frame and platform;
  • Figure 6 A and 6B are perspective side views of a vertical lift assembly of the present invention wherein a moveable panel is provided;
  • Figure 7 is an exploded view of the vertical lift assembly of Figure 6 showing its modular construction.
  • a twin screw vertical lift 10 having a support structure 12 resting on two legs 14 which act as a base for lift 10.
  • Support structure 12 has two vertical slots 16 to allow a support arm 18, attached to frame 20 to move.
  • platform 22 Resting on frame 20 is an essentially horizontal and flat platform 22. At one end of platform 22 is an optional moveable toe plate 24, known in the art, which is moveable from a ramp position when the platform and frame are in a lowered position to a barrier position when the platform and frame are in a raised position, as shown in outline in Figure 1.
  • vertical lift 10 would also comprise a series of barrier plates or railings, but these have been omitted from Figure 1 to improve the clarity of the figure.
  • a portion of vertical lift 10, in this embodiment, is positioned against a raised wall section 30 having a floor section 32.
  • the vertical lift would be activated to move raisable frame 20 to a raised position (in outline) where the user would exit platform 22 onto floor 32, by traveling straight through vertical lift 10. This is an example of a straight-through configuration.
  • the reverse operation would be conducted to move return back down from floor 32.
  • FIG 2 a rear side view of the interior of support structure 12 is shown having two vertical screws 40 which are fixed into position by assemblies 42 fitted at each end. Screws 40 can rotate, but cannot otherwise move in any direction.
  • An electric motor 44 as a motive force, is shown fixed to the top of support 12, and having two pulley assemblies 46.
  • Two toothed belts 48 connect pulley assemblies 46 with a corresponding screw pulley 50 on each of the vertical screws 40. Screw pulleys 50 are fixed to vertical screws 40, and they and pulley assemblies 46 all have a toothed configuration which corresponds to the toothed configuration of belt 48 so that rotation of an output shaft from motor 44 results in a specific and equal rotational movement of each of vertical screws 40.
  • a nut 52 is positioned on each vertical screw 40 having an interior thread which corresponds to the threaded section of vertical screw 40 so that as vertical screw 40 rotates, nut 52 is caused to move earlier upwards or downwards, as is known in vertical screw technology.
  • a face plate 54 is attached to each of nuts 52. While a number of face plates might be used, preferably, a single, common face plate is used and all nuts from all of the vertical screws used, will all connect to the common face plate. This configuration can assist in ensuring that nuts 52 move upwards and downwards at the same rate.
  • Frame 20 is connected to face plate 54 through support arms 18 so that frame 20 is raised and lowered as face plate 54 is raised or lowered.
  • Support arms 18 are positioned on face plate 54 so that they correspond to, and extend through gaps 16 in the front panel of support structure 12, as is best seen in Figure 5, which is a end view of a portion of vertical lift 10. Support arms 18 are bolted to face plate 54 and frame 20 using bolts 60.
  • Electric motor 44 is energized through an electrical control panel (not shown) which is activated by the user wishing to move platform 22 up or down.
  • FIG 3 a view along the line 3-3 of Figure 2 is shown showing how motor 44 is operatively connected to each of vertical screws, as previously described.
  • Figure 4 provides additional details of the connection of construction of the vertical screw and the operative connection to face plate 54.
  • the toothed nature of belt 48 is shown together with the corresponding toothed nature of screw pulley 50.
  • Each of pulley assemblies 46 would have a corresponding appearance to screw pulley 50.
  • the combination of the toothed belt and the corresponding toothed pulleys provides the locked linkage necessary for the correct operation of the present invention.
  • other methods of providing a locked linkage might be used including, for example, a chain and sprocket combination, a direct gear arrangement, or the like.
  • support arms 18 can be directly connected to nuts 52 without using face plate 54. Other methods for connecting frame 20 to nuts 52 might also be used.
  • FIG 6 A the frame 20 and platform 22 sections of lift 10 are shown, in a raised configuration, wherein a barrier plate 58 has been added.
  • Frame 20 has two sides, namely sides 90 and 92, and two ends, namely ends 94 and 96.
  • Barrier plate 58 is bolted to frame 20 and is fitted to the vertical lift so that it is located on side 90 between platform 22 and support structure 12. This prevents the user from inadvertently getting caught between frame 20 and support structure 12 as frame 12 is moving up or down.
  • a second, moveable barrier plate 62 is shown on the opposite side of platform 22, namely side 92.
  • the user can enter from one end 94 of platform 22 and passes directly through the platform to exit from opposite end 96.
  • Moveable barrier plate 62 is connected to side 92 of frame 20 by using an attachment system that is easily attached on site so that moveable barrier plate 62 can be attached to frame 20 in the straight-through configuration.
  • the attachment system is preferably achieved by using a series of bolts wherein moveable barrier plate 62 is provided with a series of holes through which the bolt may pass, and side 92 of frame 20 has a series of bolt holes adapted to receive the threaded end of the bolt.
  • other systems for attaching moveable barrier plate 62 to the side 92 of frame 20 might also be used.
  • the end (or otherwise termed an adjacent side) 96 of frame 20 has exactly the same moveable barrier attachment system as side 92.
  • the user can decide whether to attach moveable barrier plate 62 to either of side 92 or end 94 of frame 20.
  • end 96 As shown in Figure 6A, the user enters onto platform 22 from end 94 and exits the platform 22 onto the floor 32A, on wall 3OA, by exiting off of side 92. This provides a corner configuration, as previously described.
  • the user has the option of installing the same vertical lift in either a straight-through, or a corner configuration.
  • the manufacturer need only to stock or supply one model, and the user and/or installer can determine the final configuration of the vertical lift depending on their particular application.
  • the vertical lift has a twin screw arrangement as shown in Figures 6A and 6B.
  • the barrier plate might be non-solid, and thus can be, for example, a wire mesh, a screen, a railing system, or the like.
  • a further feature of the present invention is that the components of the vertical lift are easily assembled on site. As such, the components can be individually shipped or replaced, as necessary by replacement or shipping of a specific module.
  • This modular construction is depicted in Figure 7 by showing an exploded view of the components of the vertical lift of Figure 6 A.
  • legs 14 are bolted to support structure 12
  • support arms 18 are bolted to face plate 54 through gaps 16
  • frame 20 is bolted to support arms 18
  • barrier plate 58 is bolted to frame 20
  • platform 22 is bolted to frame 20
  • toe plate 24 with its moving linkages (not shown) is attached to frame 20.
  • moveable barrier plate 62 is fitted to frame 20 to provide either a straight-through configuration or a corner configuration, as previously described.
  • a modular configuration of a vertical lift is provided.
  • the present invention also provides an improved method for lifting a person or an object, such as a wheelchair or other personal vehicle, from a lower surface to an upper surface, using the devices of the present invention, as hereinabove described.
  • the word “comprise” and variations of the word such as “comprising” and “comprises”, when used in the description and claims of the present specification, is not intended to exclude other additives, components, integers or steps.
  • the words “substantially” or “essentially”, when used with an adjective or adverb is intended to enhance the scope of the particular characteristic; e.g., “substantially planar”, or “essentially planar” is intended to mean planar, nearly planar and/or exhibiting characteristics associated with a planar element.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

La présente invention concerne un élévateur vertical comportant une pluralité de vis verticales qui servent à faire monter ou descendre une plate-forme sensiblement horizontale et plate. Les vis verticales sont fonctionnellement reliées à un moteur par une liaison asservie de façon que les vis verticales soient toujours synchronisées, la rotation de l'arbre menant du moteur transmettant un mouvement identique aux deux vis verticales. L'invention concerne en outre un élévateur vertical pouvant se transformer d'une configuration en passage droit en une configuration en coin, simplement par déplacement d'une plaque barrière mobile.
PCT/CA2006/002098 2005-12-16 2006-12-18 Ensemble elevateur vertical WO2007068126A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA 2530549 CA2530549A1 (fr) 2005-12-16 2005-12-16 Dispositif de levage vertical
CA2530549 2005-12-16

Publications (1)

Publication Number Publication Date
WO2007068126A1 true WO2007068126A1 (fr) 2007-06-21

Family

ID=38162368

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2006/002098 WO2007068126A1 (fr) 2005-12-16 2006-12-18 Ensemble elevateur vertical

Country Status (2)

Country Link
CA (1) CA2530549A1 (fr)
WO (1) WO2007068126A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016201116A1 (fr) * 2015-06-09 2016-12-15 Wolf Storage Lifts, Llc Système de grenier d'unité de stockage
EP4000571A1 (fr) 2020-11-18 2022-05-25 Herkules Liftwerk GmbH Élévateur pour fauteuils roulants

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4353436A (en) * 1980-04-16 1982-10-12 Ricon Corp. Manual wheelchair lift
US5672041A (en) * 1994-12-22 1997-09-30 Crow River Industries, Inc. Collapsible, powered platform for lifting wheelchair
JPH11228082A (ja) * 1998-02-18 1999-08-24 Toshiba Ceramics Co Ltd 昇降装置
JPH11255489A (ja) * 1998-03-09 1999-09-21 Yoshio Suzuki ねじを利用した昇降機構とその動作の制御方法
US6435804B1 (en) * 1999-05-19 2002-08-20 Mark Hutchins Lifting apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4353436A (en) * 1980-04-16 1982-10-12 Ricon Corp. Manual wheelchair lift
US5672041A (en) * 1994-12-22 1997-09-30 Crow River Industries, Inc. Collapsible, powered platform for lifting wheelchair
JPH11228082A (ja) * 1998-02-18 1999-08-24 Toshiba Ceramics Co Ltd 昇降装置
JPH11255489A (ja) * 1998-03-09 1999-09-21 Yoshio Suzuki ねじを利用した昇降機構とその動作の制御方法
US6435804B1 (en) * 1999-05-19 2002-08-20 Mark Hutchins Lifting apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016201116A1 (fr) * 2015-06-09 2016-12-15 Wolf Storage Lifts, Llc Système de grenier d'unité de stockage
EP4000571A1 (fr) 2020-11-18 2022-05-25 Herkules Liftwerk GmbH Élévateur pour fauteuils roulants

Also Published As

Publication number Publication date
CA2530549A1 (fr) 2007-06-16

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