EP3004717B1 - Aufzugstür mit einem türkontaktschalter - Google Patents

Aufzugstür mit einem türkontaktschalter Download PDF

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Publication number
EP3004717B1
EP3004717B1 EP14726600.1A EP14726600A EP3004717B1 EP 3004717 B1 EP3004717 B1 EP 3004717B1 EP 14726600 A EP14726600 A EP 14726600A EP 3004717 B1 EP3004717 B1 EP 3004717B1
Authority
EP
European Patent Office
Prior art keywords
magnet
switching device
proximity sensors
door
detection space
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
EP14726600.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3004717A1 (de
Inventor
Rudolf J. MÜLLER
Eric Birrer
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.)
Inventio AG
Original Assignee
Inventio AG
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Filing date
Publication date
Application filed by Inventio AG filed Critical Inventio AG
Priority to EP14726600.1A priority Critical patent/EP3004717B1/de
Publication of EP3004717A1 publication Critical patent/EP3004717A1/de
Application granted granted Critical
Publication of EP3004717B1 publication Critical patent/EP3004717B1/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
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/22—Operation of door or gate contacts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02—Door or gate operation
    • B66B13/06—Door or gate operation of sliding doors

Definitions

  • the invention relates to a switching device for an elevator door for providing a door contact signal.
  • the invention also relates to a method for providing such a door contact signal by means of such a switching device.
  • Elevator systems have an elevator car and elevator doors, in particular a car door and shaft doors.
  • a shaft door is provided with at least one door contact switch, by means of which it is monitored whether the shaft door is unlocked.
  • Such door contact switches arranged on each individual shaft door are integrated into a safety circuit. If one of these shaft doors is unlocked, the safety circuit is interrupted.
  • the elevator car can only be moved in this way when all the shaft doors of the elevator system are locked.
  • further positions of such an elevator door can be monitored by means of door contact switches, in particular an open or closed position.
  • WO 2006036146 shows a switching device for monitoring a door leaf belonging to an elevator door.
  • the elevator door comprises a door border, the door leaf being lockable on the door border.
  • the switching device has a multiplicity of magnets and an equal number of proximity sensors.
  • the magnets are arranged on the door leaf and the proximity sensors are attached to the door frame.
  • Each of these proximity sensors is assigned to exactly one single magnet.
  • the magnets have a defined geometric arrangement to one another. This defined geometric arrangement is also mapped by the proximity sensors in such a way that the magnets activate the proximity sensors at the same time when the door leaf moves into its locked position. This means that each proximity sensor is at the same distance from the magnet assigned to it.
  • a switching device defined in this way prevents an unauthorized person from simulating a locked position of the elevator door in question by means of a permanent magnet held against the proximity sensors, although this elevator door is still open, for example.
  • the object is achieved by a switching device according to claim 1.
  • Electric circuits of elevator doors that can be switched by magnets can cause malfunctions if only a defined switching distance between the magnet and the proximity sensor is the criterion for switching the corresponding door contact.
  • a relevant distance from elevator door components, at which the switching process should take place, can only be reliably determined in this way if the magnet moves with respect to the proximity sensor along that movement path on the basis of which the switching device is adjusted.
  • the proximity sensors are formed by Hall sensors. Hall sensors are simply designed and accordingly reliably acting proximity sensors.
  • the proximity sensors are arranged essentially on one side of a movement axis of the magnet.
  • a further development of the switching device comprises two proximity sensors or three proximity sensors, preferably not arranged along a straight line.
  • a certain minimum number of proximity sensors is necessary in order to be able to determine the position of the magnet within the detection area and thus maintain the relevant distance between the elevator door components when the switching device is switched. If it is to be expected that the axis of movement of the magnet will only shift along one plane due to the external influences in the detection area of the switching device, only two proximity sensors are necessary for this. However, if the elevator door components are changed due to external influences in such a way that the axis of movement of the magnet in the detection area can be changed as desired, three proximity sensors are necessary to maintain the relevant distance between the elevator door components when the switching device is switched.
  • the evaluation unit can be designed in such a way that reference signal values, which are signal values of the sensor signals generated when the magnet is in a reference position, can be stored in the evaluation unit and the reference signal values can be compared with the signal values of the sensor signals generated when the magnet is in a current position. In this way, the effect of external influences on the elevator door can be determined. At the same time, an excessively large change in the current position of the magnet from the reference position of the magnet in the detection space can be detected or even prevented for this reason. In this way, failures of the elevator door can be prevented by means of preventive maintenance.
  • a minimum value can be stored in the evaluation unit and the evaluation unit is designed such that the door contact is only switched when the signal values exceed the minimum value. Malfunctions of the switching device can be prevented by means of such an additional safety aspect if, for example, all other criteria for a switching operation of the switching device are met.
  • a further development of the switching device has a self-test unit that generates magnetic pulses, the self-test unit acting on at least one of the proximity sensors in such a way that a signal value is generated by means of such a pulse.
  • the self-test unit acting on the sensor signal of the proximity sensor, malfunctions of the switching device can be detected.
  • the magnetic pulse of the self-test unit causes a signal value from the proximity sensor.
  • the sensor signal is accordingly influenced by this signal value. If an evaluation of the sensor signal shows that the sensor signal is not influenced by the self-test unit or is influenced in an unexpected manner, the cause can be, for example, a malfunction of the switching device that can be remedied by a service technician.
  • a further development of the elevator door has a locking device comprising two components to be locked to one another, the components to be locked to one another preferably being a bolt and a stop, or at least two mutually movable components, the at least two mutually movable components being at least one door leaf and a door border wherein the proximity sensors are attached to a first of the components and the magnet is attached to a second of the components.
  • a locking device comprising two components to be locked to one another, the components to be locked to one another preferably being a bolt and a stop, or at least two mutually movable components, the at least two mutually movable components being at least one door leaf and a door border wherein the proximity sensors are attached to a first of the components and the magnet is attached to a second of the components.
  • FIG. 1 shows an elevator door 2 arranged in an elevator system.
  • the elevator door 2 can be designed as a car door or as a shaft door arranged on a floor 12.
  • the elevator door 2 comprises a door frame 8 and a first door leaf 6.1.
  • the elevator door can have a second door leaf 6.2 and / or a locking device 10 for locking the door leaf 6.1.
  • the locking device 10 has a bolt 16 and a mechanical stop 14.
  • the bolt 16 can be coupled, for example, to the first door leaf 6.1 and the stop 14 can be attached to the second door leaf 6.2 or to the door border 8.
  • a switching device 4 can be arranged on the locking device 10 for monitoring the locked position.
  • a switching device 4 of an elevator door 2 according to the prior art is shown in simplified form.
  • the elevator door 2 comprises a door leaf 6 shown in its closed position and a door border 8.
  • the switching device 4 for monitoring the closed position of the door leaf 6 comprises a magnet 20 and a proximity sensor 22.
  • the magnet 20 is attached to the door leaf 6.
  • the proximity sensor 22 is attached to the door frame 8 and has a detection distance SA.
  • the detection distance SA characterizes the maximum distance between the magnet 20 and the proximity sensor 22, which is sufficient for a door contact signal S to be generated.
  • the Figure 2A shows the elevator door 2 in the state according to a completed adjustment of the switching device 4 by a service technician.
  • the service technician had the option of defining the fastening position of the proximity sensor 22 and / or the magnet 20 in such a way that a door contact signal S that detects the closed position is output when the door leaf 6 has a maximum gap W from the door frame 8.
  • Such an adjustment is based on the detection distance SA.
  • the door contact signal S is interrupted when the door leaf 6 is moved in the opening direction O in such a way that the distance between the magnet 20 and the proximity sensor 22 is greater than the detection distance SA.
  • the magnet 20 moves when the door leaf 6 moves in the opening or closing direction O, C along its intended axis of movement B.
  • Figure 2B shows the door leaf 6 in its closed position after external influences have caused a change in components of the elevator door 2.
  • changes can be caused by deformations of the door leaf 6 caused by elevator passengers or by wear of guide elements of the door leaf 6.
  • the magnet 20 no longer moves along its intended movement axis B, but rather along a changed movement axis B '.
  • the detection distance SA which has been essentially unchanged since the time the switching device 4 was adjusted by the service technician, results according to FIG Figure 2B therefore, that the switching operation of the switching device takes place at a maximum gap distance W 'changed to the maximum gap distance W.
  • the door contact signal S is only output when the changed maximum gap distance W 'is not reached.
  • the door leaf 6 can adjoin the door frame 8 without a door contact signal S detecting the closed position of the door leaf 6 because the resulting distance between the magnet 20 and the proximity sensor 22 is greater than the detection distance SA. If this door contact signal S is essential for the operation of the elevator system to continue, this leads to a temporary failure of the elevator system until the switching device 4 is readjusted by a service technician.
  • the switching device 4 comprises a magnet 20, a detection space DR and at least two proximity sensors 22a, 22b, 22c.
  • the switching device 4 can have an evaluation unit 26.
  • the proximity sensors 22a, 22b, 22c are arranged adjacent to the detection space DR.
  • the switching device 4 comprises a switch body 21 to which the proximity sensors 22a, 22b, 22c are attached.
  • the magnet 20 on the bolt and the proximity sensors 22a, 22b, 22c on the stop can be arranged, preferably fastened, - or vice versa.
  • the switching device 4 can be provided for monitoring an open or closed position or any desired operating position of the door leaf.
  • the proximity sensors 22a, 22b, 22c can be arranged, preferably fastened, on the first door leaf and the magnet 20 on the possibly present second door leaf or on the door border - or vice versa.
  • the magnet 20 has an immersion depth ET in the detection space DR. Accordingly, the magnet 20 is at least partially immersed in the detection space DR.
  • the switching device 4 is designed or adjustable in such a way that a door contact is switched into the detection space DR at a predetermined immersion depth ET *.
  • At least one of the proximity sensors 22a, 22b, 22c generates a sensor signal 24a, 24b, 24c that can be assigned to the respective proximity sensor 22a, 22b, 22c.
  • the at least one sensor signal 24a, 24b, 24c can be transmitted to the evaluation unit 26. If at least two sensor signals 24a, 24b, 24c are present, an immersion depth ET of the magnet 20 can be determined by evaluating these sensor signals 24a, 24b, 24c and possibly the current direction of movement of the door leaf.
  • this evaluation can take place with the aid of mathematical algorithms which describe a dependency of the sensor signal 24a, 24b, 24c on the distance between the magnet 20 and the assigned proximity sensors 22a, 22b, 22c. If the immersion depth ET of the magnet 20 corresponds to the specified immersion depth ET *, a door contact can be switched by outputting a door contact signal S.
  • the door contact signal S accordingly signals that the door leaf has reached or passed the closed, open or locked position or the previously determined operating position Has.
  • the Figures 4A , 5A , 6th show components of an elevator door with a switching device 4 according to different design variants.
  • the elevator door has the components of the in Figure 1 shown elevator door.
  • the switching device 4 comprises a magnet 20, a detection space DR, at least two proximity sensors 22a, 22b, 22c, 22d and can have an evaluation unit 26.
  • the proximity sensors 22a, 22b, 22c, 22d are arranged adjacent to the detection space DR.
  • the magnet 20 is attached to the door leaf 6 and the proximity sensors 22a, 22c are attached to the door frame 8 ( Figure 4A ) - or vice versa ( Figure 6 ).
  • the magnet 20 on a first door leaf 6.1 and the proximity sensors 22a, 22b on a second door leaf 6.2 ( Figure 5A ) be attached.
  • the magnet 20 plunges into the detection space DR.
  • the magnet 20 is moved along a predetermined movement axis B with respect to the detection space DR, whereby external influences can lead to a changed movement axis B '.
  • the proximity sensors 22a, 22b, 22c, 22d each generate a sensor signal 24a, 24b, 24c, 24d that can be assigned to the proximity sensor 22a, 22b, 22c, 22d when the magnet 20 is in the detectable vicinity of the respective proximity sensor 22a, 22b, 22c, 22d.
  • These sensor signals 24a, 24b, 24c, 24d can be transmitted to the evaluation unit 26 and evaluated within the evaluation unit 26.
  • the door contact signal is S issued.
  • a door contact signal S can be used, for example, to switch a safety circuit of the elevator system.
  • a number of at least two proximity sensors 22a, 22b, 22c is necessary if it can be assumed that the movement axis B 'of the magnet 20 in the detection space DR also after the occurrence of the components that change the elevator door Influences essentially only along a plane such as that according to the Figures 4A , 5A The representation level shown is changed.
  • a number of at least three, preferably not arranged along a straight line, proximity sensors 22a, 22b, 22c (e.g. Figure 6 ), on the other hand, is necessary if the magnet 20 can have an arbitrarily changed axis of movement B 'after the influences that change the elevator door components have occurred in the detection space DR.
  • the Figure 4A shows the switching device 4 according to a first embodiment, in which the proximity sensors 22a, 22c are arranged essentially on both sides of the movement axis B, B 'of the magnet 20, which may be changed by external influences.
  • the Figure 5A shows the switching device 4 according to a second embodiment, in which the proximity sensors 22a, 22b are arranged essentially on one side of the movement axis B, B 'of the magnet 20, which may be changed by external influences.
  • the Figures 4B and 5B show waveform diagrams of the Figure 4A or 5A shown switching devices 4.
  • signal values, in particular the signal strengths, of the sensor signals 24a, 24b, 24c are mapped as a function of the immersion depth ET of the magnet 20 in the detection space DR.
  • a higher signal strength corresponds to the ones shown Figures 4A , 5A a reduced distance between the magnet 20 and the relevant proximity sensor 22a, 22b, 22c. Due to the sensor characteristics of the individual proximity sensors 22a, 22b, 22c, it is known what distance the magnet 20 is from the corresponding proximity sensor 22a, 22b, 22c for the detected signal value 24a, 24b, 24c.
  • a position of the magnet 20 in the detection space DR can be determined from the sensor signals 24a, 24b, 24c of at least two proximity sensors 22a, 22b, 22c.
  • an evaluation of the sensor signals 24a, 24b, 24c within the evaluation unit 26 enables the door contact to be switched into the detection space DR by means of the door contact signal S at a predetermined immersion depth ET * of the magnet 20.
  • the evaluation unit 26 can be designed in such a way that, during the adjustment of the switching device 4, signal values 24a, 24b, 24c of the proximity sensors 22a, 22b, 22c at a given Immersion depth ET * of the magnet 20 can be stored as reference signal values 25a, 25b, 25c.
  • the reference signal values 25a, 25b, 25c therefore characterize a reference position of the magnet 20 at the specified immersion depth ET *.
  • Such a failure of the elevator system can be prevented by outputting an adjustment request signal in the event of a predefined deviation of these signal values of the sensor signals 24a, 24b, 24c from the reference signal values 25a, 25b, 25c.
  • the size of the detection space DR of the switching device 4 can be taken into account.
  • FIG. 5B By way of example, curves of those signal values of the sensor signals 24a ', 24b' are shown with a broken line, which result from a movement of the magnet 20 along its changed movement axis B '.
  • the switching device 4 in the case of an arrangement of the proximity sensors 22a, 22b, can be adjusted essentially on one side of the possibly changed movement axis B, B 'of the magnet 20 so that the criterion for outputting the door contact signal S is equally high signal values 24a, 24b; 24a ', 24b' of the proximity sensors 22a, 22b.
  • a minimum value M stored in the evaluation unit 26 is required in the case of such an evaluation in order to prevent the door contact signal S from being output when the signal values 24a, 24b, 24a ', 24b' are less than this minimum value M.
  • FIG. 6 shows a switching device 4 of an elevator door according to a third embodiment variant.
  • the switching device 4 can include a self-test unit 28.1, 28.2 if the evaluation unit 26 is present.
  • the self-test unit 28.1, 28.2 including by way of example at least one electromagnet acting on the proximity sensors 22a, 22b, 22c, 22d, generates magnetic pulses at a predetermined frequency.
  • the magnetic pulses act on the proximity sensors 22a, 22b, 22c, 22d, whereupon the proximity sensors 22a, 22b, 22c, 22d generate signal values corresponding to the pulses.
  • These signal values generated by means of the pulses are superimposed on the signal profiles of the sensor signals 24a, 24b, 24c, 24d generated on the basis of the detection of the magnet 20.
  • an error signal can be generated which, for example, generates a maintenance request for maintenance of the switching device 4.
EP14726600.1A 2013-05-28 2014-05-27 Aufzugstür mit einem türkontaktschalter Active EP3004717B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14726600.1A EP3004717B1 (de) 2013-05-28 2014-05-27 Aufzugstür mit einem türkontaktschalter

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13169531 2013-05-28
PCT/EP2014/060888 WO2014191379A1 (de) 2013-05-28 2014-05-27 Aufzugstür mit einem türkontaktschalter
EP14726600.1A EP3004717B1 (de) 2013-05-28 2014-05-27 Aufzugstür mit einem türkontaktschalter

Publications (2)

Publication Number Publication Date
EP3004717A1 EP3004717A1 (de) 2016-04-13
EP3004717B1 true EP3004717B1 (de) 2021-07-07

Family

ID=48576245

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14726600.1A Active EP3004717B1 (de) 2013-05-28 2014-05-27 Aufzugstür mit einem türkontaktschalter

Country Status (12)

Country Link
US (1) US9546077B2 (es)
EP (1) EP3004717B1 (es)
KR (1) KR20160015232A (es)
CN (1) CN105247267B (es)
AU (1) AU2014273209B2 (es)
BR (1) BR112015029394B1 (es)
CA (1) CA2910992A1 (es)
HK (1) HK1216919A1 (es)
MX (1) MX2015016257A (es)
MY (1) MY173811A (es)
SG (1) SG11201508848YA (es)
WO (1) WO2014191379A1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2015016257A (es) * 2013-05-28 2016-03-11 Inventio Ag Puerta de ascensor con un interruptor de contacto de puerta.
DE102015107221B4 (de) * 2015-05-08 2018-04-12 Sick Ag Elektromagnetischer Näherungssensor und Verfahren zur Erfassung eines Zielobjekts
US11124388B2 (en) * 2015-07-30 2021-09-21 Inventio Ag Locking system for elevator car door
JP6580275B2 (ja) * 2016-12-09 2019-09-25 三菱電機株式会社 エレベータのインターロック装置

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
US1344430A (en) * 1919-04-02 1920-06-22 William J Wigmore Electromagnetic elevator-door lock
EP1307395B2 (de) * 2000-08-07 2009-11-18 Inventio Ag Überwachungseinrichtung für einen aufzug
JP4334346B2 (ja) * 2001-09-18 2009-09-30 インベンテイオ・アクテイエンゲゼルシヤフト エレベータドア用安全回路
CA2478078C (en) * 2002-03-27 2011-05-17 Inventio Ag Shaft monitoring system for an elevator
JP4527362B2 (ja) * 2002-05-03 2010-08-18 インベンテイオ・アクテイエンゲゼルシヤフト エレベータ装置のシャフトドア監視方法
DE20306708U1 (de) * 2003-04-29 2003-07-03 Schmersal K A Gmbh & Co Zugangsschutzeinrichtung
US7097001B2 (en) * 2003-11-12 2006-08-29 Inventio Ag Elevator car door movement restrictor
US7537091B2 (en) 2003-11-17 2009-05-26 Otis Elevator Company Magnetic elevator door mover
EP1794077B1 (en) * 2004-09-27 2012-04-04 Otis Elevator Company Elevator door lock sensor device
ES2727392T3 (es) * 2007-12-18 2019-10-15 Inventio Ag Sistema de bloqueo para una puerta de ascensor
CN102317192B (zh) * 2009-03-04 2013-09-04 三菱电机株式会社 电梯装置及其检查方法
CN202321900U (zh) * 2011-12-07 2012-07-11 湖州太平微特电机有限公司 电梯用电子式磁控双稳态开关
MX2015016257A (es) * 2013-05-28 2016-03-11 Inventio Ag Puerta de ascensor con un interruptor de contacto de puerta.

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
CN105247267B (zh) 2017-12-01
AU2014273209B2 (en) 2017-08-10
HK1216919A1 (zh) 2016-12-09
MY173811A (en) 2020-02-24
KR20160015232A (ko) 2016-02-12
BR112015029394A2 (pt) 2017-07-25
US20160101967A1 (en) 2016-04-14
WO2014191379A1 (de) 2014-12-04
CN105247267A (zh) 2016-01-13
AU2014273209A1 (en) 2015-12-17
CA2910992A1 (en) 2014-12-04
BR112015029394B1 (pt) 2022-11-29
SG11201508848YA (en) 2015-11-27
MX2015016257A (es) 2016-03-11
EP3004717A1 (de) 2016-04-13
US9546077B2 (en) 2017-01-17

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