EP4086213A1 - Plateforme de levage - Google Patents

Plateforme de levage Download PDF

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Publication number
EP4086213A1
EP4086213A1 EP21382404.8A EP21382404A EP4086213A1 EP 4086213 A1 EP4086213 A1 EP 4086213A1 EP 21382404 A EP21382404 A EP 21382404A EP 4086213 A1 EP4086213 A1 EP 4086213A1
Authority
EP
European Patent Office
Prior art keywords
rack
section
rail
carrier
tubular section
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.)
Withdrawn
Application number
EP21382404.8A
Other languages
German (de)
English (en)
Inventor
Aurelio CASTAÑO LANTERO
Eduardo MORÁN GARCÍA
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.)
TK Home Solutions BV
Original Assignee
TK Home Solutions 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
Application filed by TK Home Solutions BV filed Critical TK Home Solutions BV
Priority to EP21382404.8A priority Critical patent/EP4086213A1/fr
Publication of EP4086213A1 publication Critical patent/EP4086213A1/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention refers to a platform lift.
  • the platform may comprise a seat.
  • the platform lift is a stairlift having a seat.
  • the position of the rack section in the inner area of the tubular section provides the following advantageous aspects:
  • the new solution allows to simplify the manufacturing process by 3D bending the tubular section and the rack section simultaneously, which means that production time is drastically reduced.
  • the rack section can be attached to the tubular section without being bended before. In both cases the separate bending step of the rack is obsolete; also obsolete is the risk of any mismatches between the separately bended rack section and the tubular section.
  • the rack section is hidden in the inner area and therefore a visual impact of the rack for the user is reduced.
  • the mechanical performance is improved. Different configurations for the rack are proposed, from rack holes directly trimmed on the tube, to a wear-resistant plastic rack bolted to the tube. Main characteristic is that bending process can be carried out in a single stage.
  • the rack section is much closer to the center of the tubular section, what means that the pitch distortion when bending is minimal.
  • the pitch distortion can be zero.
  • FIG 1 shows exemplary embodiments of a generic platform lifts 1, to which the invention can be applied.
  • a platform lift 1 for the use with a wheelchair is shown.
  • the platform 63 therefore comprises a kind of lifting ramp, which can travel along a direction of travel D form a first landing area 4 to a second landing area 5.
  • the direction of travel D is defined by a rail 2, and is defined in main by the course of an existing stairway 9 in a house or outside of a house.
  • An alternative embodiment is shown in figure 1b wherein the platform 63 comprises a seat.
  • the platform lift is a stairlift with chair.
  • the rail of the platform has a curved shape, which at last partially deviates from a straight line; thus a direction of travel D will change at least once during the course of the rail 2. There may be changes in the direction D in top view and in side view.
  • the rail 2 may comprise a plurality of separate rail segments 2S, which are joined together at rail connections 2C.
  • the platform 63 is part of a driving unit 6, which further comprises a carrier 61.
  • the carrier has non shown rollers, which roll along the rail 2.
  • first positive engagements means 23 are provided on the rail 2, which cooperates with driving means, in particular a driven pinion (not shown), of the carrier 61.
  • a balancing system 62 is provided on the drive unit 6, to keep the platform 63 always in a horizontal orientation, even if the inclination of the rail 2 varies during its course.
  • FIG. 2 shows a conventional rail (cross section and side view).
  • the rail 2 comprise a tubular section 21 and a rack section 22.
  • the tubular section and the rack section are bended accordingly before joining.
  • the bended rack section 12 is joined to an outer surface of the bended tubular section by welding (see weld seam 28).
  • the rack section 22 comprises said engagement means 23.
  • the engagement means have the shape of holes in the rack section, into which the driven pinion can engage.
  • the rack section can have the shape of a gear rack.
  • Figures 3 to 6 show an inventive rail 2 of an inventive stairlift.
  • the rail can be used in a stairlift as described in figure 1 , where the inventive rail replaces the rail shown in figure 2 .
  • Figure 7 shows such a stairlift having a an inventive rail as shown in figure 3
  • the rail can be designed in a manner as shown in figures 4-6 .
  • a generic platform lift of figure 1 is fully applicable to the stairlift of figure 7 .
  • the rail 2 has a tubular section 21.
  • the tubular section 21 provides a support for rollers 65 of the stairlift carrier 61.
  • the tubular section 21 defines an inner area 21i; in other words, the tubular 21 section is hollow.
  • a rack section 22 is located within the inner area 21i of the tubular section 21.
  • the rack section 22 has first positive engagement means 23.
  • the drive 3 has a drive gear 32 with second positive engagement means 33.
  • the drive gear 32 is connected via a drive shaft 31 to a drive motor (non-shown).
  • the second engagement means 33 are in rolling engagement with the first positive engagement means 23 so as to transfer a drive force between the drive and the rail 2.
  • Several types of drive gears 32 can be used in the drive 3.
  • the drive gear 32, in particular the second positive engagement means 33 of the drive gear 32, are adapted to match with the first positive engagement means 23.
  • a rack carrier 24 is provided within the inner area 21i.
  • the rack carrier 24 provides mechanical support for the rack section 22 within the inner area 21i.
  • the rack section 22 is attached to the rack carrier 24.
  • the rack carrier 24 is fixed to the tubular section 21 by means of a connector 25.
  • the connector 25 extends radially between the inner area 21 and the tubular section 21.
  • the connector 25 in combination with the drive gear 32 serves also for providing support surfaces 251 for supporting a tilting momentum M issued by the carrier. Herby it is ensured that the carrier dos not tilt around the tubular section 21.
  • FIGS 3 to 6 show different embodiments of the rail 2, which individual distinguishing features are described below.
  • Figure 3 shows a rack section 22 which is in particular made from metal, plastic and/or an elastomer compound.
  • the rack section 22 can comprise a rubber block chain.
  • the rack section 22 may comprise a bending stiffness which is lower than the bending stiffness of the rack carrier.
  • Figure 4 shows a racks section 22 which is made from a metal strip.
  • the metal strip provides easy bendability.
  • the sheet metal has a high tensile strength.
  • Figure 5 shows a rack section 22 which is made of an chain, having a plurality of separate chain elements.
  • the chain elements are held flexible to each other so that the chain has nearly no bending stiffness at all.
  • the chain easily follows the bended shape of the rack carrier 24.
  • the chain may be a commercially available chain.
  • FIG. 6 shows a rack section 22 which is made in one piece with the rack carrier 24.
  • the rack carrier 24 is provided with holes which constitute the first positive engagement means 23. Consequently, by bending the rack carrier 24 the rack section 22 is bended at the same time.
  • the cross section of the rack carrier 24 is complementary to the cross section of the rack section 22.
  • the complementary relationship allows, that the rack section 22 is movable along the direction of travel D within the rack carrier 24. This is important during the bending process in case the rack section 22 is bended together with the rack carrier.
  • the general movability of the rack section 22 within the rack carrier may be restrained by separate fixing means 22f.
  • a suitable fixing mean 22f can be a screw, a weld connection or an adhesive joint set at discrete points along the direction of travel D (shown in figure 3 , also exemplary for the embodiments of figures 4 and 5 ).
  • an adhesive joint can be placed at an end of a rail segment.
  • the complementary relationship between the cross sections of the rack carrier 24 and the rack section allows in an embodiment, that the rack section is fixedly held within the rack carrier in any directions perpendicular to the direction of travel D, so the rack section 22 cannot escape sidewards out of the rack carrier 24.
  • the rack section is in particular attached to the tubular section 21 before bending.
  • the tubular section 21 By bending the tubular section 21 also the rack section 22 gets bended.
  • the tubular section 21 and the rack carrier 24 are bended before attaching the rack section 22 to the tubular section 21 and the rack carrier 24.
  • the rack section is in particular flexible in shape as e.g. in the embodiment of figure 5 .
  • the rack section 22 is introduced at an end of the rack carrier 24. Afterwards the rack section 22 is slided within the rack carrier 24 along the direction of travel D, until the rack section 22 is full introduced within the rack carrier 24.
  • FIG. 3 to 6 show merely straight lined part of rail.
  • the illustration is also applicable for a curved and/or twisted part of the rail.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Types And Forms Of Lifts (AREA)
EP21382404.8A 2021-05-05 2021-05-05 Plateforme de levage Withdrawn EP4086213A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21382404.8A EP4086213A1 (fr) 2021-05-05 2021-05-05 Plateforme de levage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21382404.8A EP4086213A1 (fr) 2021-05-05 2021-05-05 Plateforme de levage

Publications (1)

Publication Number Publication Date
EP4086213A1 true EP4086213A1 (fr) 2022-11-09

Family

ID=75825790

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21382404.8A Withdrawn EP4086213A1 (fr) 2021-05-05 2021-05-05 Plateforme de levage

Country Status (1)

Country Link
EP (1) EP4086213A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220259011A1 (en) * 2019-07-09 2022-08-18 Stannah Stairlifts Limited Improvements in or relating to stairlifts

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3820055C1 (fr) * 1988-06-13 1989-10-05 Hans Dipl.-Ing. 8900 Augsburg De Richter
US6332512B1 (en) * 1998-11-02 2001-12-25 Kumalift Co., Ltd. Chair type stair elevating device
WO2020243233A1 (fr) * 2019-05-31 2020-12-03 Bruno Independent Living Aids, Inc. Rail de monte-escalier et son procédé de formation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3820055C1 (fr) * 1988-06-13 1989-10-05 Hans Dipl.-Ing. 8900 Augsburg De Richter
US6332512B1 (en) * 1998-11-02 2001-12-25 Kumalift Co., Ltd. Chair type stair elevating device
WO2020243233A1 (fr) * 2019-05-31 2020-12-03 Bruno Independent Living Aids, Inc. Rail de monte-escalier et son procédé de formation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220259011A1 (en) * 2019-07-09 2022-08-18 Stannah Stairlifts Limited Improvements in or relating to stairlifts

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