EP3286123A1 - Treppenlift - Google Patents

Treppenlift

Info

Publication number: EP3286123A1
Authority: EP; European Patent Office
Prior art keywords: latch; seat; gear; frame; worm
Prior art date: 2015-04-21
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.): Granted

Application number

EP16717925.8A

Other languages

English (en)

French (fr)

Other versions

EP3286123B1 (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 Accessibility 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.)

2015-04-21

Filing date

2016-04-21

Publication date

2018-02-28

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(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

2016-04-21 Application filed by ThyssenKrupp AG, ThyssenKrupp Accessibility BV filed Critical ThyssenKrupp AG

2016-04-21 Priority to EP24213983.0A priority Critical patent/EP4491561A3/de

2016-04-21 Priority to EP20154022.6A priority patent/EP3683180B1/de

2018-02-28 Publication of EP3286123A1 publication Critical patent/EP3286123A1/de

2020-04-08 Application granted granted Critical

2020-04-08 Publication of EP3286123B1 publication Critical patent/EP3286123B1/de

Status Active legal-status Critical Current

2036-04-21 Anticipated expiration legal-status Critical

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
- B66B9/06—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.
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, comprising at least one rail extending along a track, a frame, suspended on the at least one rail, and comprising a drive, for moving the frame along the rail, a support for a seat, movable, in particular pivotable with respect to the support, a balancing system, for keeping the seat in a predetermined orientation with respect to a fixed world and a lock for locking the movement of the seat with respect to the support.
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 lock comprises a latch.
Such latch may be spring-biased, and may comprise an actuator for unlocking the actuator.
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 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 mechanism may be configured as a self-energizing mechanism. That means that in case of engagement of the latch, the force which keeps the latch in its locked state will increase if the seat tends to further deflect from the horizontal orientation (inclination increases).
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.
FIG. 1 shows a stair lift in a desired uninclined position
FIG. 2 shows a stair lift in a undesired inclined position
- Figure 3 shows a first embodiment of a brake for the stair lift of figures 1 and 2 in front view
- Figure 4 shows a second embodiment of a brake for the stair lift of figures 1 and 2 in front view
FIG. 5 shows a third embodiment of a brake for the stair lift of figures 1 and 2 in a first state of operation
FIG. 6 shows the embodiment of figure 5 in a second state of operation
Figure 7 shows the embodiment of figure 5 in a third state of operation.
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. When the latch 14 engages the gear 12, 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)

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 true EP3286123A1 (de)	2018-02-28
EP3286123B1 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)

Families Citing this family (9)

* 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
DE102020125242B4 (de)	2020-09-28	2025-03-13	S.C. Hawle H S.R.L.	Fahreinheit für einen Treppenlift mit Sicherungsvorrichtung
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

Family Cites Families (18)

* 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
FI96838C (fi)	1994-10-21	1996-09-10	Kone Oy	Hissin turvajarru
GB2322450A (en) *	1997-02-20	1998-08-26	Peter John Jones	Annular ring inclinometer
NL1007770C2 (nl)	1997-12-11	1999-06-14	Thyssen De Reus Bv	Lift.
ES2154200B1 (es)	1998-12-22	2001-11-01	Dynatech Dynamics & Technology	Sistema de frenado de emergencia para ascensores, de doble efecto, ascendente y descendente.
JP4890246B2 (ja)	2004-05-20	2012-03-07	三菱電機株式会社	エレベータの非常止め装置
ES2284356B1 (es)	2005-10-14	2008-09-16	Thyssenkrupp Elevadores, S.A.	Aparato de frenado de emergencia de doble efecto para cabinas de ascensores.
JP4893628B2 (ja)	2006-03-08	2012-03-07	三菱電機株式会社	エレベータの非常止め装置
MY143851A (en)	2006-12-05	2011-07-15	Inventio Ag	Braking device for holding and braking a lift cabin in a lift facility
GB0709551D0 (en) *	2007-05-18	2007-06-27	Stannah Stairlifts Ltd	Improvements in or relating to stairlifts
GB2508764B (en) *	2010-10-21	2014-09-10	Handicare Accessibility Ltd	Stairlift
GB201103716D0 (en) *	2011-03-04	2011-04-20	Stannah Stairlifts Ltd	Improvements in or relating to stairlifts
NL2010014C2 (en)	2012-12-19	2014-06-23	Thyssenkrupp Accessibility B V	Stair lift drive with rotatable mounting part for seat.
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.

2015
- 2015-04-21 NL NL2014685A patent/NL2014685B1/en active
2016
- 2016-04-21 EP EP16717925.8A patent/EP3286123B1/de active Active
- 2016-04-21 EP EP24213983.0A patent/EP4491561A3/de active Pending
- 2016-04-21 EP EP20154022.6A patent/EP3683180B1/de active Active
- 2016-04-21 ES ES20154022T patent/ES3006834T3/es active Active
- 2016-04-21 ES ES16717925T patent/ES2794826T3/es active Active
- 2016-04-21 WO PCT/EP2016/058867 patent/WO2016170038A1/en not_active Ceased

Also Published As

Publication number	Publication date
WO2016170038A1 (en)	2016-10-27
EP3683180C0 (de)	2024-11-20
EP3683180A1 (de)	2020-07-22
NL2014685A (en)	2016-10-24
EP4491561A2 (de)	2025-01-15
EP4491561A3 (de)	2025-03-05
EP3286123B1 (de)	2020-04-08
NL2014685B1 (en)	2017-01-25
ES3006834T3 (en)	2025-03-19
ES2794826T3 (es)	2020-11-19
EP3683180B1 (de)	2024-11-20

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