EP3971123A1 - Équipement d'ascenseur et dispositif d'accouplement et de verrouillage respectif pour portes automatiques de cabine - Google Patents

Équipement d'ascenseur et dispositif d'accouplement et de verrouillage respectif pour portes automatiques de cabine Download PDF

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Publication number
EP3971123A1
EP3971123A1 EP21197357.3A EP21197357A EP3971123A1 EP 3971123 A1 EP3971123 A1 EP 3971123A1 EP 21197357 A EP21197357 A EP 21197357A EP 3971123 A1 EP3971123 A1 EP 3971123A1
Authority
EP
European Patent Office
Prior art keywords
lever
cab
elevator equipment
panels
connecting arm
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.)
Pending
Application number
EP21197357.3A
Other languages
German (de)
English (en)
Inventor
Sandro Marchiori
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.)
Prisma SpA
Original Assignee
Prisma SpA
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 Prisma SpA filed Critical Prisma SpA
Publication of EP3971123A1 publication Critical patent/EP3971123A1/fr
Pending legal-status Critical Current

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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
    • B66B13/02—Door or gate operation
    • B66B13/14—Control systems or devices
    • B66B13/16—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
    • B66B13/18—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position without manually-operable devices for completing locking or unlocking of doors
    • B66B13/20—Lock mechanisms actuated mechanically by abutments or projections on the cages
    • 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
    • B66B13/12—Arrangements for effecting simultaneous opening or closing of cage and landing doors

Definitions

  • the present invention generally relates to an elevator equipment, such as a lift/elevator or a freight elevator and, in particular, a coupling and locking device for automatic cab doors of an elevator equipment.
  • Known elevator equipment comprise a cab which is movable inside a shaft commonly called “elevator shaft”.
  • the cab moved in a conventional way by ropes or hydraulic pistons, serves at least two distinct floors of the same building.
  • a so-called "landing door” which restricts access to the elevator equipment shaft is provided for each floor of the building.
  • the cab is also equipped with a so-called “cab door”, which normally consists of at least one panel sliding on guides to open and close this cab door.
  • both the cab door and the various landing doors are generally automatically and synchronously opened and/or closed.
  • each landing door also usually consists of at least one panel sliding on guides. Consequently, during normal operation of the elevator equipment, the cab door is synchronized with the opening/closing of the landing door of the floor the cab has stopped at, thus allowing the door of each floor to open automatically when the cab door opens when both these doors are aligned.
  • a known locking device for the sliding panels of a cab door is disclosed, for example, in document US-A-4926974 .
  • This locking device comprises a so-called lever bolt mechanism that prevents the cab door from opening under certain operating conditions of the elevator equipment.
  • the cab door sliding panel is provided with a vertically sliding bolt which, in case of non-alignment of the cab door with one of the landing doors, engages with the cab floor to prevent cab door from being opened manually.
  • the cab door locking device must not operate when this cab door is correctly aligned with one of the landing doors.
  • the locking device therefore, must always ensure the opening of both the cab door and a corresponding landing door in case of correct coupling between these doors.
  • document EP-A-1266860 discloses an elevator equipment according to the preamble of claim 1. This elevator equipment is provided with a further known coupling and locking device for automatic cab doors.
  • the object of the present invention is, therefore, to provide a coupling and locking device for automatic cab doors of an elevator equipment which is capable of solving the aforementioned drawbacks of the prior art in an extremely simple, economical and particularly functional way.
  • Another object of the present invention is to provide a coupling and locking device for automatic cab doors of an elevator equipment that is capable of simultaneously locking all the components that form the assembly consisting of the cab door and a respective landing door. This feature makes it possible to increase the strength of the aforementioned assembly consisting of the cab door and a respective landing door, even in the case of limited dimensions of the panels of each of these doors.
  • a further object of the present invention is to provide a coupling and locking device for automatic cab doors of an elevator equipment which is easily adaptable to the various types of shafts of the elevator equipment.
  • the coupling and locking device 10 is installed on an elevator equipment which comprises at least one cab 100 which is vertically movable within a respective elevator shaft between at least two floors of a building.
  • the cab 100 in a per se known manner, can slide vertically between the various floors of the building by means of a vertical guide system and a motorized movement system.
  • the cab 100 comprises at least one cab door 102 provided with one or more sliding panels 102A, 102B, 102C.
  • the panels 102A, 102B, 102C can be of a variable number according to the type of cab door 102. Regardless of their number, the panels 102A, 102B, 102C of the cab door 102 are driven by a respective actuation mechanism 104 to slide along a first substantially horizontal direction X.
  • the panels 102A, 102B, 102C are three in number and slide laterally (that is in the same orientation), but the coupling and locking device 10 can also be applied to central doors (that is with doors always sliding along the same direction, but in opposite orientations) with two, four, six or more panels.
  • the elevator equipment also includes at least one landing door 106, which is located at each floor of the building and which is designed to control access to the elevator shaft.
  • Each landing door 106 allows access to the cab 100 of the elevator equipment when aligned with the cab door 102 along a certain passage direction.
  • the landing door 106 can comprise one or more sliding panels 106A, 106B, 106C, whose number is usually equal to the number of the corresponding sliding panels 102A, 102B, 102C of the cab door 102.
  • Each landing door 106 also comprises at least one actuator element 108 configured to engage with the cab door 102 to allow its opening and closing simultaneously with the landing door 106, as will be better specified hereinafter.
  • the coupling and locking device 10 is connected to at least one of the panels 102A, 102B, 102C of the cab door 102 and comprises at least one locking mechanism 12, which is movable along a second direction Y substantially perpendicular to the first direction X.
  • the second direction Y is a substantially vertical direction.
  • the locking mechanism 12 is, therefore, movable along the second direction Y between a position for locking the opening of the panels 102A, 102B, 102C of the cab door 102 and a position for unlocking the opening of these panels 102A, 102B, 102C of the cab door 102.
  • the coupling and locking device 10 further comprises at least one cam mechanism 14 and at least one abutment element 16.
  • the cam mechanism 14 is driven by the actuation mechanism 104 of the panels 102A, 102B, 102C of the cab door 102 to slide along the first direction X.
  • the cam mechanism 14 is, therefore, designed to selectively actuate the locking mechanism 12 and thus allow the panels 102A, 102B, 102C of the cab door 102 to open and close.
  • the cam mechanism 14 comprises at least one first lever 18, which is movable with reciprocating motion along the first direction X to move towards and away from the abutment element 16.
  • the cam mechanism 14 also comprises at least one second lever 20, which is movable along the second direction Y and is mechanically coupled to both the first lever 18 and to the locking mechanism 12.
  • the locking mechanism 12 is of the so-called lever bolt type and comprises at least one rod 22 whose lower end has a bolt shape. This bolt is engageable in a corresponding hole (not shown) obtained at the floor 110 of the cab 100.
  • the locking mechanism 12 simultaneously locks four different elements of the elevator equipment instead of locking only two of them.
  • the locking mechanism 12 of the lever bolt type allows to constrain both the "cab out-of-floor lock" as defined by the European standards EN 81-20 and EN 81-50, and the landing lock the elevator equipment must be provided with to comply with these European standards.
  • both the cab door 102 and the landing door 106 consist of a plurality of respective panels 102A, 102B, 102C and 106A, 106B, 106C (such as the three panels shown in the attached figures)
  • the locking mechanism 12 of the lever bolt type is capable of locking the sliding of all the panels 102A, 102B, 102C of the cab door 102 and of all the corresponding panels 106A, 106B, 106C of the landing door 106 along the first direction X.
  • the panels 102A, 102B, 102C of the cab door 102, as well as the corresponding panels 106A, 106B, 106C of the landing door 106, are in fact interconnected by means of a system of suitably “chicane"-shaped sheets so that, when the bolt of the rod 22 is engaged in the corresponding hole obtained at the floor 110 of the cab 100, the locking mechanism 12 of the lever bolt type simultaneously blocks the sliding along the first direction X of both the plurality of panels 102A, 102B, 102C of the cab door 102, and of the corresponding plurality of panels 106A, 106B, 106C of the landing door 106.
  • a cab 102 and/or a landing 106 door consisting of a plurality of panels 102A, 102B, 102C and/or 106A, 106B, 106C can be manufactured with panels 102A, 102B, 102C and/or 106A, 106B, 106C with a width (measured along the first direction X) very small compared to their height (measured along the second direction Y), ensuring compliance with the European standards EN 81-20 and EN 81-50 which regulate the design and production of elevator equipment.
  • each landing door 106 preferably consists of a roller.
  • Both the abutment element 16 and the first lever 18 can be, therefore, provided with respective flat rolling surfaces 24 and 26, oriented along the second direction Y, on which the roller 108 rolls when interposed between this abutment element 16 and this first lever 18, that is to say in the operating condition of Figure 3 of the coupling and locking device 10.
  • the mechanical coupling between the first lever 18 and the second lever 20 is obtained through the interposition of a plurality of connecting arms 28, 30, 32.
  • a plurality of connecting arms 28, 30, 32 there are provided:
  • both the first connecting arm 28 and the third connecting arm 32 have respectively an L-shape to form a first articulated quadrilateral, consisting in sequence of the first lever 18, the first connecting arm 28, the second lever 20 and the third connecting arm 32, and a second articulated quadrilateral, consisting in sequence of the second lever 20, the first connecting arm 28, the second connecting arm 30 and the third connecting arm 32.
  • the actuation mechanism 104 of the panels 102A, 102B, 102C of the cab door 102 preferably consists of at least one belt 112 moved by one or more motorized pulleys 114.
  • the cam mechanism 14 as a whole moves, therefore, horizontally when controlled by the movement of the belt 112.
  • the first lever 18 of the cam mechanism 14 moves horizontally to and from the abutment element 16 when the cab 100 moves along the elevator shaft (operating condition of Figures 1 , 4 and 5 ) and in the case in which this cab 100 is stationary along the elevator shaft and the panels 102A, 102B, 102C of the cab door 102 are not aligned with any of the landing doors 106 (operating condition of Figure 2 ).
  • the panels 102A, 102B, 102C of the cab door 102 must remain closed and at the same time they must be prevented from manual opening, in compliance with European standards EN 81-20 and EN 81-50.
  • the second lever 20 of the coupling and locking device 10 keeps the locking mechanism 12 in the respective locking position of the opening of the panels 102A, 102B, 102C, that is to say with the lower end of the rod 22 engaged in the corresponding hole obtained at the floor 110 of the cab 100.
  • first lever 18 of the cam mechanism 14 during its horizontal movement, meets the roller 108 of a landing door 106, it means that the cab door 102 is correctly aligned with this landing door 106.
  • the first lever 18 cannot continue its horizontal movement towards the abutment element 16, since the roller 108 is interposed between the first lever 18 and the abutment element 16.
  • the first lever 18 then transfers the remaining stroke, not made, to the second lever 20 which, being laterally guided by suitable guide means 46, moves vertically upwards lifting the rod 22 to disengage it from the corresponding hole obtained at the floor 110 of the cab 100 (operating condition of Figures 3 , 6 and 7 ).
  • the panels 102A, 102B, 102C of the cab door 102 are, therefore, free to open simultaneously with the landing door 106.
  • the guide means 46 of the second lever 20 can consist, for example, of a plurality of rolling bearings 46 (as shown in the figures), or of at least one slide (not shown) made of a material suitable for sliding.
  • This coupling and locking device 10 for automatic cab doors of an elevator equipment according to the present invention achieves the objects highlighted above.
  • This coupling and locking device 10 has the function of splitting the movement of the cam mechanism 14, from horizontal to vertical, only when the cab 100 of the elevator equipment is stationary at a floor, at a landing door 106.
  • the cam mechanism 14, by means of its own system of levers 18 and 20, has the possibility of recognizing the correct position of the cab 100 when it is stationary at a landing door 106, so as to allow the disengagement of the locking mechanism 12, which could not happen otherwise.
  • the locking mechanism 12 is, therefore, actuated by the cam mechanism 14 through a concatenated horizontal and vertical movement of the system of levers 18 and 20, obtained thanks to the respective connecting arms 28, 30 and 32.
  • the coupling and locking device 10 can be used on all cab doors with any number of panels (in the attached figures a cab door 102 with three panels 102A, 102B, 102C is shown by way of example only), and any locking mechanism, for example with central closure or side closure (as the one shown in the attached figures). Finally, the coupling and locking device 10 can operate both in the presence and in the absence of an electrical contact for controlling the closure of the locking mechanism 12.
  • the attached figures show, for example, a coupling and locking device 10 without the electric contact for controlling the closure of the locking mechanism 12.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Elevator Door Apparatuses (AREA)
EP21197357.3A 2020-09-18 2021-09-17 Équipement d'ascenseur et dispositif d'accouplement et de verrouillage respectif pour portes automatiques de cabine Pending EP3971123A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102020000022099A IT202000022099A1 (it) 2020-09-18 2020-09-18 Impianto elevatore e rispettivo dispositivo di accoppiamento e di bloccaggio per porte di cabina automatiche

Publications (1)

Publication Number Publication Date
EP3971123A1 true EP3971123A1 (fr) 2022-03-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP21197357.3A Pending EP3971123A1 (fr) 2020-09-18 2021-09-17 Équipement d'ascenseur et dispositif d'accouplement et de verrouillage respectif pour portes automatiques de cabine

Country Status (2)

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EP (1) EP3971123A1 (fr)
IT (1) IT202000022099A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4926974A (en) 1989-02-13 1990-05-22 Inventio Ag Elevator car with improved car door clutch
EP1266860A1 (fr) 2001-06-14 2002-12-18 Inventio Ag Dispositif de couplage entre porte de cabine et porte palière
WO2005077808A2 (fr) 2004-02-11 2005-08-25 Wittur Gmbh Dispositif d'actionnement et de verrouillage de portes d'ascenseurs
EP1914189A1 (fr) * 2006-10-19 2008-04-23 Franz Xaver Meiller Fahrzeug- und Maschinenfabrik-GmbH & Co KG Mécanisme de verrouillage pour la porte d'une cabine d'ascenseur
WO2011020877A1 (fr) 2009-08-21 2011-02-24 Wittur Holding Gmbh Dispositif d'accouplement de porte et mécanisme de verrouillage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4926974A (en) 1989-02-13 1990-05-22 Inventio Ag Elevator car with improved car door clutch
EP1266860A1 (fr) 2001-06-14 2002-12-18 Inventio Ag Dispositif de couplage entre porte de cabine et porte palière
WO2005077808A2 (fr) 2004-02-11 2005-08-25 Wittur Gmbh Dispositif d'actionnement et de verrouillage de portes d'ascenseurs
EP1914189A1 (fr) * 2006-10-19 2008-04-23 Franz Xaver Meiller Fahrzeug- und Maschinenfabrik-GmbH & Co KG Mécanisme de verrouillage pour la porte d'une cabine d'ascenseur
WO2011020877A1 (fr) 2009-08-21 2011-02-24 Wittur Holding Gmbh Dispositif d'accouplement de porte et mécanisme de verrouillage

Also Published As

Publication number Publication date
IT202000022099A1 (it) 2022-03-18

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