EP3286123B1 - Treppenlift - Google Patents

Treppenlift Download PDF

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Publication number
EP3286123B1
EP3286123B1 EP16717925.8A EP16717925A EP3286123B1 EP 3286123 B1 EP3286123 B1 EP 3286123B1 EP 16717925 A EP16717925 A EP 16717925A EP 3286123 B1 EP3286123 B1 EP 3286123B1
Authority
EP
European Patent Office
Prior art keywords
latch
seat
gear
worm
frame
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.)
Active
Application number
EP16717925.8A
Other languages
English (en)
French (fr)
Other versions
EP3286123A1 (de
Inventor
Arnoldus Theodorus Van Der Heiden
Dennis VARKEVISSER
Cornelis BOXUM
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
ThyssenKrupp AG
ThyssenKrupp Stairlifts 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=53385898&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3286123(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ThyssenKrupp AG, ThyssenKrupp Stairlifts BV filed Critical ThyssenKrupp AG
Priority to EP24213983.0A priority Critical patent/EP4491561A3/de
Priority to EP20154022.6A priority patent/EP3683180B1/de
Publication of EP3286123A1 publication Critical patent/EP3286123A1/de
Application granted granted Critical
Publication of EP3286123B1 publication Critical patent/EP3286123B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B66B9/0838—Levelling gears

Definitions

  • the present invention relates to a stair lift, in particular chair stair lift.
  • Stair lifts in general comprise a rail, which forms the track along a stair, which rail may in numerous situations be curved.
  • the seat of the stair lift follows the curved rail, which may lead to some rocking or inclement of the seat during movement.
  • the seat may therewith incline too, which causes the risk of a person sliding off the seat.
  • a provision may be present for balancing the seat.
  • Such provision may be an automated balancing system, with electr(on)ic actuators.
  • GB2484709 A discloses a stair lift according to the preamble of independent apparatus claim 1.
  • actuators may unexpectedly refuse or fail, which leads to dangerous situations.
  • the risk of failing is quite high in systems comprising a worm drive for leveling the seat. After years of operation the worm drive may be worn out, so that the worm may suddenly disengage the gear of the worm drive.
  • the invention thereto proposes a stair lift according to claim 1.
  • the locking system prevents the seat to get in undesired angles with respect to the frame, and thus indirectly with respect to the fixed world.
  • the lock may be a separate part of the stair lift, and not - for instance - just a software routine in the balancing system.
  • the lock may be a mechanical lock, which, at least in order to activate, does not comprise electronic actuators.
  • the brake is spring biased.
  • the lock is configured to lock the movement of the seat with respect to the frame when the seat is moved more than a predetermined angle.
  • the lock may comprise detection means for detecting that the predetermined angle was reached. In particular these may be mechanical detection means, such as a hole or protrusion.
  • the predetermined angle may be defined with respect to the frame, or with respect to the fixed world, and may for instance be 5 or in particular 10 degrees.
  • the spring based latch may engage with a hole, positioned such that the latch locks thanks to the spring when the predetermined angle is reached.
  • the lock comprises a brake, which may in particular be a drum brake or a disk brake.
  • the lock may further be configured for disabling the balancing system when it is locked, or initiate an immediate correction of the balancing system when the predetermined angle was reached, in order to prevent a person positioned in the locked angle for a long time.
  • the latch In a locked state the latch is torque proof connected with a counterpart, in particular a gear.
  • the latch may be connected to the frame, and the counterpart may be connected to the seat, or vice versa.
  • the frame and the seat are torque proof connected with each other.
  • the lock may further be configured for disabling a drive, for moving the frame part along the rail when it is locked, so that no person is moved with the lift while sitting under an angle.
  • the balancing system comprises a worm drive, having a worm spidle and a worm gear engaging each other.
  • the worm spindle is mounted at the support and driven by a motor.
  • the worm gear is mounted to the seat.
  • the lock comprises an anchor, which can be brought into torque proof engagement with the worm gear, in particular with the worm teeth of the worm gear.
  • the anchor may be attached to the frame.
  • the worm drive further comprising a worm spindle engaging the worm gear
  • the worm gear has a at least one first area for exclusively engaging with the worm spindle
  • the worm gear has at least one second area for exclusively engaging with the latch.
  • the latch in a locked state is adapted to follow the movement of the counterpart and being biased by the counterpart against a biasing element, in particular a biasing face, the biasing face is adapted to additionally bias the latch into its locked position, in particular in a radial direction to the center of the gear. So the further the seat is deflected from its horizontal position, the further the latch is biased against the biasing face, the further the biasing face biases the latch in direction of the center of the gear and thus into the locked state.
  • a biasing element in particular a biasing face
  • Figure 1 shows a stair lift in a desired uninclined position.
  • the stair lift comprises a rail 1 extending along a track, a frame 2, suspended on the rail 1, and a drive (not visible), for moving the frame 2 along the rail; a support 7 for a seat 3, which is movable, in particular pivotable with respect to the frame 2.
  • the stair lift 1 comprises a balancing system 4, for keeping the seat in a predetermined uninclined orientation with respect to a fixed world, provided with a lock for locking the movement of the seat with respect to the frame 2. Embodiments of the lock are depicted in figures 3 to 7 .
  • Figure 2 shows a the stair lift from figure 1 in an undesired inclined position
  • Figure 3 shows a first embodiment of a brake for the stair lift from figures 1 and 2 , wherein the brake comprises a drum brake 5.
  • Figure 4 shows a second embodiment of a brake for the stair lift from figure 1 and 2 , wherein the brake comprises a disk brake 6.
  • Figure 5 shows a third embodiment of a brake for the stair lift form figure 1 and 2 .
  • the brake comprises a latch 14 in the form of an anchor 14.
  • the balancing system 4 comprises a worm drive 10 having a worm spindle 11 and a worm gear 12.
  • the worm spindle 11 is driven by a balancing motor M and is mounted at the frame 2.
  • the spindle 11 is in engagement with the worm gear, which is connected to the seat 3.
  • the further the gear 12 is rotated against the spindle 11 the further the seat 3 is angled against the frame 2.
  • the latch 14 is mounted on the frame 2.
  • the seat 3 is rotationally fixed to the frame 2, only a limited turn of approx. 2° may be possible, caused by an optional linear guiding 19, which is pivotably flexible in small amount, as described later with reference to figure 7 .
  • the latch 14 is biased by a loading spring 16 into a locked position.
  • Figure 5 shows the latch 14 in its unlocked position.
  • an actuator 17 in particular a solenoid actuator, is provided for holding the latch 14 in its unlocked position.
  • the actuator 17 is deactivated, so that the loading spring 16 can urge the latch 14 into its locked position, as illustrated in figure 6 .
  • the deactivation can be initiated with the help of an orientation sensor system, e.g. as explained in the European patent application 16154071.1 (not published yet).
  • the latch 14 is supported in the housing 18 of the frame 2 by means of a linear guiding 19.
  • the guiding 19 is supported flexibly in the housing 18 by means of centering means 21.
  • the centering means 21 can be realized by springs or by any elastic material, which may produce an elastic counteracting force compression.
  • the linear guiding 17 can be deflected in a small amount perpendicular to the main direction (double arrow P, fig. 6 ) of the linear guiding 19.
  • the latch 14 can follow the rotational movement of the gear 12 (see figure 7 ).
  • a biasing face 20 is provided, against which the latch 14 is biased during following.
  • the biasing face 20 is inclined radially towards the center of the gear 12, so that upon contact between the latch 14 and the biasing face 20 the latch 14 is biased against the gear 12, additionally to the loading force of the loading spring 16. So the brake is in this embodiment designed self-energizing using of the weight of the seat including any load sitting on the seat.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Seats For Vehicles (AREA)
  • Types And Forms Of Lifts (AREA)

Claims (11)

  1. Treppenlift, Folgendes umfassend:
    - mindestens eine Tragschiene (1), die sich entlang einer Führungsschiene erstreckt,
    - einen Rahmen (2), der in die mindestens eine Tragschiene eingehängt ist und Folgendes umfasst:
    - einen Antrieb, um den Rahmenteil entlang der Tragschiene zu bewegen;
    - einen Träger (7) für einen Sitz (3), der insbesondere drehbar am Rahmen montiert ist;
    - einen Sitz (3), der in Bezug zum Rahmen (2) beweglich, insbesondere verschwenkbar ist;
    - ein Ausgleichssystem, um den Sitz (3) in Bezug zu einer festen Umgebung in einer festgelegten Ausrichtung zu halten;
    - eine Sperre (5, 6, 14) zum Sperren der Bewegung des Sitzes (3) in Bezug zum Träger, wobei die Sperre einen Riegel (14) umfasst, wobei der Riegel (14) im gesperrten Zustand mit einem Gegenstück (12), insbesondere einem Zahnrad (12) drehfest verbunden ist,
    wobei der Riegel (14) vorgespannt ist,
    dadurch gekennzeichnet,
    dass der Riegelmechanismus als selbstverstärkender Mechanismus ausgelegt ist,
    wobei der Riegelmechanismus auf eine Art ausgelegt ist, dass im gesperrten Zustand eine Kraft, die den Riegel im gesperrten Zustand hält, zunimmt, wenn der Sitz dazu neigt, sich weiter von der horizontalen Ausrichtung zu verlagern.
  2. Treppenlift nach Anspruch 1,
    wobei die Sperre (5, 6, 14) dazu ausgelegt ist, die Bewegung des Sitzes (3) in Bezug zum Rahmen (2) zu sperren, wenn der Sitz um mehr als einen festgelegten Winkel bewegt wird.
  3. Treppenlift nach Anspruch 2,
    wobei der festgelegte Winkel in Bezug zum Rahmen definiert ist oder wobei der festgelegte Winkel in Bezug zur festen Umgebung definiert ist,
    oder wobei der festgelegte Winkel 5 Grad, insbesondere 10 Grad beträgt.
  4. Treppenlift nach dem vorstehenden Anspruch,
    wobei der Riegel (14) dazu eingerichtet ist, mit einem Zahnrad (12) als Gegenstück, insbesondere einem Schneckenrad (12) eines Schneckengetriebes (10), zum Ausgleichen des Sitzes in Eingriff gebracht zu werden.
  5. Treppenlift nach dem vorstehenden Anspruch,
    wobei das Zahnrad (12) ein Schneckenrad eines Schneckengetriebes (10) ist, wobei das Schneckengetriebe ferner eine Schneckenspindel (11) umfasst, die in das Schneckenrad (12) eingreift,
    das Schneckenrad (12) zumindest eine erste Fläche (C11, X11) zum ausschließlichen Eingreifen in die Schneckenspindel (11) aufweist,
    das Schneckenrad (12) zumindest eine zweite Fläche (C14, X14) zum ausschließlichen Eingreifen in den Riegel (14) aufweist.
  6. Treppenlift nach dem vorstehenden Anspruch,
    wobei die erste Fläche (C11) in Umfangsrichtung von der zweiten Fläche (C14) beabstandet ist,
    und/oder
    wobei die erste Fläche (X11) in Axialrichtung von der zweiten Fläche (X14) beabstandet ist.
  7. Treppenlift nach einem der vorstehenden Ansprüche, wobei der Riegel (14) im gesperrten Zustand dazu eingerichtet ist, der Bewegung des Gegenstücks (12) zu folgen und vom Gegenstück (12) gegen ein Vorspannungselement (20), insbesondere eine Vorspannungsfläche (20), die dazu eingerichtet ist, den Riegel (14) zusätzlich in seine gesperrte Position vorzuspannen, insbesondere in Radialrichtung der Mitte des Zahnrads (12) vorgespannt zu werden.
  8. Treppenlift nach einem der vorstehenden Ansprüche, wobei der Sperrmechanismus eine Bremse, insbesondere eine Trommelbremse (5) oder Scheibenbremse (6) ist.
  9. Treppenlift nach einem der vorstehenden Ansprüche, ein Stellglied (17) zum Entsperren des Riegels (14) umfassend.
  10. Treppenlift nach einem der vorstehenden Ansprüche, wobei die Sperre dazu ausgelegt ist, das Ausgleichssystem zu deaktivieren, wenn sie gesperrt ist.
  11. Treppenlift nach einem der vorstehenden Ansprüche, wobei die Sperre dazu ausgelegt ist, einen Antrieb zu deaktivieren, um das Rahmenteil entlang der Tragschiene zu bewegen, wenn sie gesperrt ist.
EP16717925.8A 2015-04-21 2016-04-21 Treppenlift Active EP3286123B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP24213983.0A EP4491561A3 (de) 2015-04-21 2016-04-21 Treppenlift
EP20154022.6A EP3683180B1 (de) 2015-04-21 2016-04-21 Treppenlift

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2014685A NL2014685B1 (en) 2015-04-21 2015-04-21 Chair Stair Lift.
PCT/EP2016/058867 WO2016170038A1 (en) 2015-04-21 2016-04-21 Stair lift

Related Child Applications (3)

Application Number Title Priority Date Filing Date
EP20154022.6A Division EP3683180B1 (de) 2015-04-21 2016-04-21 Treppenlift
EP20154022.6A Division-Into EP3683180B1 (de) 2015-04-21 2016-04-21 Treppenlift
EP24213983.0A Division EP4491561A3 (de) 2015-04-21 2016-04-21 Treppenlift

Publications (2)

Publication Number Publication Date
EP3286123A1 EP3286123A1 (de) 2018-02-28
EP3286123B1 true EP3286123B1 (de) 2020-04-08

Family

ID=53385898

Family Applications (3)

Application Number Title Priority Date Filing Date
EP16717925.8A Active EP3286123B1 (de) 2015-04-21 2016-04-21 Treppenlift
EP24213983.0A Pending EP4491561A3 (de) 2015-04-21 2016-04-21 Treppenlift
EP20154022.6A Active EP3683180B1 (de) 2015-04-21 2016-04-21 Treppenlift

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP24213983.0A Pending EP4491561A3 (de) 2015-04-21 2016-04-21 Treppenlift
EP20154022.6A Active EP3683180B1 (de) 2015-04-21 2016-04-21 Treppenlift

Country Status (4)

Country Link
EP (3) EP3286123B1 (de)
ES (2) ES3006834T3 (de)
NL (1) NL2014685B1 (de)
WO (1) WO2016170038A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020125242A1 (de) 2020-09-28 2022-03-31 S.C. Hawle H S.R.L. Fahreinheit für einen Treppenlift mit Sicherungsvorrichtung

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2017842B1 (en) * 2016-11-23 2018-05-28 Ooms Otto Bv An apparatus for transporting a load from a first to a second level, in particular a stairlift
GB2565076B (en) 2017-07-31 2022-03-02 Stannah Stairlifts Ltd Improvements in or relating to stairlifts
NL2022914B1 (en) * 2019-04-10 2020-10-20 Otolift Trapliften B V An apparatus for transporting a load from a first to a second level, in particular a stairlift
NL2023263B1 (en) * 2019-06-05 2020-12-22 Otolift Trapliften B V An apparatus for transporting a load from a first to a second level
US11603287B2 (en) 2020-11-19 2023-03-14 Harmar Mobility, Llc Stairlift overspeed safety systems
US11505429B2 (en) * 2020-11-19 2022-11-22 Harmar Mobility, Llc Stairlift overspeed safety systems
NL2033120B1 (en) * 2022-09-23 2024-03-29 Otolift Trapliften B V Apparatus for transporting a load, in particular a stairlift
NL2033908B1 (en) * 2023-01-04 2024-07-16 Handicare Stairlifts B V Stairlift comprising a safety system

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190625529A (en) 1906-11-12 1907-09-29 Hugo Harry Busch Improvements in Safety Apparatus for Elevator Cars.
GB286243A (en) 1927-03-01 1929-06-05 Waygood Otis Ltd Improvement in elevator safety system
GB299874A (en) 1927-11-04 1929-10-10 Waygood Otis Ltd Improvement in elevator safety appliance
US3762512A (en) 1971-10-29 1973-10-02 Us Elevator Corp Elevator rail grab safety apparatus
EP0708051A1 (de) 1994-10-21 1996-04-24 Kone Oy Sicherheitsbremse für einen Aufzug
GB2322450A (en) 1997-02-20 1998-08-26 Peter John Jones Annular ring inclinometer
EP1013595A2 (de) 1998-12-22 2000-06-28 Dynatech, Dynamics & Technology, S. L. Aufzugsnotbremsvorrichtung mit doppelter Wirkung
EP1748017A1 (de) 2004-05-20 2007-01-31 Mitsubishi Denki Kabushiki Kaisha Notstopp-vorrichtung für aufzug
EP1783087A2 (de) 2005-10-14 2007-05-09 Thyssenkrupp Elevadores, S.A. Notbremse für Aufzugskabinen mit doppelter Auswirkung
EP1930282A1 (de) 2006-12-05 2008-06-11 Inventio Ag Halte- und Notstop-Bremseinrichtung für eine Aufzugsanlage
WO2008142372A1 (en) 2007-05-18 2008-11-27 Stannah Stairlifts Limited Improvements in or relating to stairlifts
EP1997767A1 (de) 2006-03-08 2008-12-03 Mitsubishi Denki Kabushiki Kaisha Notstopp-vorrichtung für aufzug
GB2484709A (en) 2010-10-21 2012-04-25 Handicare Accessibility Ltd Stairlift with seat leveling, seat inclination limiting and improved access
WO2012120286A2 (en) 2011-03-04 2012-09-13 Stannah Stairlifts Limited Improvements in or relating to stairlifts

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1007770C2 (nl) 1997-12-11 1999-06-14 Thyssen De Reus Bv Lift.
NL2010012C2 (en) 2012-12-19 2014-06-23 Thyssenkrupp Accessibility B V Stair lift drive system for a smooth dented rail.
NL2010013C2 (en) 2012-12-19 2014-06-23 Thyssenkrupp Accessibility B V Stair lift drive.
NL2010014C2 (en) 2012-12-19 2014-06-23 Thyssenkrupp Accessibility B V Stair lift drive with rotatable mounting part for seat.

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190625529A (en) 1906-11-12 1907-09-29 Hugo Harry Busch Improvements in Safety Apparatus for Elevator Cars.
GB286243A (en) 1927-03-01 1929-06-05 Waygood Otis Ltd Improvement in elevator safety system
GB299874A (en) 1927-11-04 1929-10-10 Waygood Otis Ltd Improvement in elevator safety appliance
US3762512A (en) 1971-10-29 1973-10-02 Us Elevator Corp Elevator rail grab safety apparatus
EP0708051A1 (de) 1994-10-21 1996-04-24 Kone Oy Sicherheitsbremse für einen Aufzug
GB2322450A (en) 1997-02-20 1998-08-26 Peter John Jones Annular ring inclinometer
EP1013595A2 (de) 1998-12-22 2000-06-28 Dynatech, Dynamics & Technology, S. L. Aufzugsnotbremsvorrichtung mit doppelter Wirkung
ES2154200A1 (es) 1998-12-22 2001-03-16 Dynatech Dynamics & Technology Sistema de emergencia para ascensores, de doble efecto, ascendente y descendente.
EP1748017A1 (de) 2004-05-20 2007-01-31 Mitsubishi Denki Kabushiki Kaisha Notstopp-vorrichtung für aufzug
EP1783087A2 (de) 2005-10-14 2007-05-09 Thyssenkrupp Elevadores, S.A. Notbremse für Aufzugskabinen mit doppelter Auswirkung
EP1997767A1 (de) 2006-03-08 2008-12-03 Mitsubishi Denki Kabushiki Kaisha Notstopp-vorrichtung für aufzug
EP1930282A1 (de) 2006-12-05 2008-06-11 Inventio Ag Halte- und Notstop-Bremseinrichtung für eine Aufzugsanlage
WO2008142372A1 (en) 2007-05-18 2008-11-27 Stannah Stairlifts Limited Improvements in or relating to stairlifts
GB2484709A (en) 2010-10-21 2012-04-25 Handicare Accessibility Ltd Stairlift with seat leveling, seat inclination limiting and improved access
WO2012120286A2 (en) 2011-03-04 2012-09-13 Stannah Stairlifts Limited Improvements in or relating to stairlifts

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "Stairlifts and vertical platforms for the disabled", CEN/TC10/WG 8N95, 23 March 2016 (2016-03-23), pages 1 - 80, XP055774484

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020125242A1 (de) 2020-09-28 2022-03-31 S.C. Hawle H S.R.L. Fahreinheit für einen Treppenlift mit Sicherungsvorrichtung
DE102020125242B4 (de) 2020-09-28 2025-03-13 S.C. Hawle H S.R.L. Fahreinheit für einen Treppenlift mit Sicherungsvorrichtung

Also Published As

Publication number Publication date
ES2794826T3 (es) 2020-11-19
WO2016170038A1 (en) 2016-10-27
EP3683180B1 (de) 2024-11-20
EP3683180A1 (de) 2020-07-22
NL2014685B1 (en) 2017-01-25
ES3006834T3 (en) 2025-03-19
EP3683180C0 (de) 2024-11-20
NL2014685A (en) 2016-10-24
EP4491561A2 (de) 2025-01-15
EP3286123A1 (de) 2018-02-28
EP4491561A3 (de) 2025-03-05

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