EP0354414B1 - Lock for the door of a lift shaft - Google Patents

Lock for the door of a lift shaft Download PDF

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Publication number
EP0354414B1
EP0354414B1 EP89113854A EP89113854A EP0354414B1 EP 0354414 B1 EP0354414 B1 EP 0354414B1 EP 89113854 A EP89113854 A EP 89113854A EP 89113854 A EP89113854 A EP 89113854A EP 0354414 B1 EP0354414 B1 EP 0354414B1
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EP
European Patent Office
Prior art keywords
contact
pivotable
shaft door
contacts
electrical contact
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.)
Expired - Lifetime
Application number
EP89113854A
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German (de)
French (fr)
Other versions
EP0354414A2 (en
EP0354414A3 (en
Inventor
Robert Andrew Wissell
David Bacon Pearson
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Inventio AG
Original Assignee
Inventio AG
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Publication date
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Priority to AT89113854T priority Critical patent/ATE88981T1/en
Publication of EP0354414A2 publication Critical patent/EP0354414A2/en
Publication of EP0354414A3 publication Critical patent/EP0354414A3/en
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Publication of EP0354414B1 publication Critical patent/EP0354414B1/en
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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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/18—Contacts characterised by the manner in which co-operating contacts engage by abutting with subsequent sliding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
    • H01H3/161—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift for actuation by moving a closing member, e.g. door, cover or lid
    • H01H3/163—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift for actuation by moving a closing member, e.g. door, cover or lid associated with locking or manipulating means of the closing member

Definitions

  • the invention relates to an elevator shaft door, and in particular to an electromechanical elevator shaft door lock.
  • Landing door locks are required to prevent an elevator car from being driven before the landing door of the floor on which the elevator car is located is closed and locked. After the cabin has left the relevant floor, the lock prevents the landing door from being opened by unauthorized persons from the floor side until the cabin is again in the entrance zone of the floor and stops or is stopped. A landing door is locked mechanically when it reaches the closed position. After the mechanical locking, an electrical signal is generated which indicates to the elevator control that the car can be driven. (see e.g. document US-A-4 483 420).
  • shaft door locks are operated mechanically and electrically whenever an elevator car stops on a floor, they have to be robust and reliable. They should do without lubrication, and the generation of the electrical signal to indicate that the shaft door is locked should also be possible if the components that have to work together do not align. If the electrical signal is not generated after the shaft door has been properly closed and locked, the cabin cannot move down from the floor, so service personnel must be called to remedy the fault.
  • the invention is therefore based on the object, the electrical switch, after perfect mechanical Locking the shaft door generates the electrical signal, improve it, and create a reliable, maintenance-free embodiment.
  • the electrical switch mounted on a shaft door jamb has first and second elongated, fixed electrical contacts, which consist of upper parts which are fastened to an insulating mounting block and lower parts which depend from the mounting block.
  • the lower parts are shaped in such a way that an electrical contact bridge, which is supported by the shaft door, is moved into the electrical switch when the shaft door is closed and after the shaft door is mechanically locked, the electrical switch can be actuated by a downward movement, the Downward movement is derived from the closing movement of the shaft door.
  • the lower parts of the first and second fixed contacts When viewed from the side, the lower parts of the first and second fixed contacts have a substantially U-shaped shape, each with an upper, a lower leg and a connecting bay, the upper legs being components of the upper parts of the fixed contacts and the lower legs one have upward spring centering.
  • the bays of the first and second fixed contacts have outwardly directed arms on their non-adjacent edges, in which closed slots are provided in which pivotable contacts with downwardly directed spring centers are mounted. Between the spring centers of the legs and pivotable contacts, springs are arranged which press the pivotable contacts into a first, oblique position.
  • a contact bridge which is moved downwards after the shaft door has been locked, the pivotable contacts are simultaneously turned in the opposite direction of rotation Spring force pivoted into a second position.
  • Alignment errors between the swiveling contacts are compensated for and good self-cleaning is achieved by friction between the contacts and the contact bridge with each closing and opening.
  • the springs are an active part of the electrical circuit which is switched on when the pivotable contacts are actuated by the contact bridge, the springs and the connections between the pivotable contacts and the slots in the associated arms being connected in parallel.
  • Fig. 1 denotes a shaft door lock, which is arranged on a shaft door jamb 14 and is operatively connected to a shaft door 12 which is only partially shown.
  • the shaft door 12 can also be opened by means of suitable devices which are provided on the car door and on the shaft door 12 and which interlock when stopping on one floor when the car door is opened.
  • the initial opening movement of the cabin door is converted into a counterclockwise rotary movement of an arm 16 arranged on the shaft door 12 and pivotable about an axis 18.
  • An insulated nose 22 is attached to the arm 16 and has a leg 20 which is raised over the upper edge 24 of a lip 26 during the rotational movement.
  • the lip 26 is part of a support 28 which is fastened to a shaft wall 30, directly adjacent to the shaft door jamb 14.
  • the shaft door 12 is thus mechanically unlocked and is carried along by the cabin door as the opening movement continues.
  • the force that holds the arm 16 in the raised position disappears, so that due to its weight it falls downward in a clockwise direction.
  • the leg 20 latches again with the lip 26 of the carrier 28, so that the shaft door 12 can no longer be opened.
  • An electrical switch 32 is in this way with the carrier 28 connected that after the mechanical locking of the shaft door 12, an electrical signal indicating the locking is generated for the elevator control 34 (FIG. 7). After receiving this signal, the elevator control 34 can generate a start signal for the elevator drive, for example a traction sheave or hydraulic drive.
  • the electrical switch 32 has a metallic mounting base plate 36, on which a plate 38 made of electrically insulating material is arranged.
  • a contact arrangement 42 which consists of an electrically insulating mounting block 40 and a first and second elongated metallic contacts 44 and 46, the contacts being arranged at a horizontal distance from one another.
  • the first elongated metallic contact 44 has an upper and a lower part 48 and 54, the upper part 48 being fastened to the mounting block 40 by means of screws 50 and 52.
  • the lower part 54 extends downward from the lower side 56 of the mounting block 40 (FIG. 2). When viewed from the side, the lower part 54 has a substantially U-shaped configuration which is formed from a bay 58 and an upper and lower leg 60 and 62, the upper leg 60 being part of the upper part 48 of the first contact 44.
  • the second elongated metallic contact 46 has an upper and a lower part 68 and 74, the upper part 68 being fastened to the mounting block 40 by means of screws 70 and 72.
  • the lower portion 74 which extends downward from the mounting block 40, has a generally U-shaped shape when viewed from the side, which is formed from a bay 78 and upper and lower legs 80 and 82, the upper leg 80 Is part of the upper part 68 of the second contact 46.
  • Bays 58 and 78 have inner edges 84 and 86 which are spaced apart from one another and outer non-adjacent edges 88 and 90 which have outwardly directed arms 92 and 94.
  • the arms 92 and 94 can be formed flat together with the associated bays 58 and 78 and then bent outwards, forming an angle of 90 degrees to the outer surfaces 96 and 98 of the bays 58 and 78.
  • Closed slots 100 and 102 are provided in the arms 92 and 94, which are aligned horizontally to one another.
  • the slots 100 and 102 extend in the longitudinal direction perpendicular to the plate 38 to the outside.
  • the slots 100 and 102 are wider on the inner, opposite surfaces of the arms 92 and 94 upwards than on the outer surfaces.
  • the first pivotable contact 104 has a first and a second part 108 and 110, which are arranged on opposite sides of the arm 92.
  • the first part 108 is bent downwards, forming an angle 112 of approximately 75 degrees to a plane determined by the second part 110.
  • the first pivotable contact 104 can pivot counterclockwise from a horizontal position with respect to FIG. 1 by approximately 15 degrees, assuming a limited, first position when the first part 108 strikes the arm 92.
  • the second part 110 has a shoulder 114 which is immediately adjacent to the arm 92 and is provided with a bevel 116 from the vertical of approximately 15 degrees, which during the Pivotal movement of the first contact 104 adapts to the changing width of the slot 100.
  • the second part 110 has on its downward surface a spring centering 118 and is provided with two openings 119 and 119 '.
  • the second pivotable contact 106 is constructed in exactly the same way as the first pivotable contact 104. With reference to FIG. 1, the second pivotable contact 106 can pivot clockwise by approximately 15 degrees from a horizontal position, the one when the first is struck Part 108 on arm 94 occupies a limited, first position.
  • the lower legs 62 and 82 of the first and second contacts 44 and 46 have spring centers 120 and 122 on their upward-facing surfaces.
  • threaded holes 124 and 126 are provided, which serve to receive screws 128 and 130, which serve a double function as described in more detail below. Openings 131 and 133 are also provided in the lower legs.
  • 132 and 134 are designated a first and a second spring under pressure, which move the pivotable contacts 104 and 106 in the counterclockwise and clockwise directions (Fig. 1). If the movement is not hindered, the contacts 104 and 106 are pressed into the first position by the springs 132 and 134 (FIG. 7).
  • the first spring 132 is held between the spring centering 118 of the first pivotable contact 104 and the spring centering 120 of the first contact 44
  • the second spring 134 is held between the spring centering 118 of the second pivoting contact 106 and the spring centering 122 of the second contact 46.
  • the first and second springs 132 and 134 are the same Construction, so that only the first spring 132 is described in more detail below.
  • 136 and 138 denote an upper and a lower end of the spring 132, which has, for example, four to five turns.
  • the upper end 136 is bent such that it forms an inverted U-shape.
  • the lower end 138 is only deformed during assembly.
  • the pivotable contacts 104 and 106 and the fixed contacts 44 and 46 are assembled in the same way, so that only the assembly of the pivotable contact 104 and the fixed contact 44 is described below.
  • the upper end 136 of the spring 132 is guided through the opening 119 of the pivotable contact 104, the upper opening of the spring 132 being brought into the required position for the spring centering 118.
  • the upper end 136 is then deformed in the opening 119 such that a metallurgical connection of low electrical resistance is created between the spring 132 and the pivotable contact 104.
  • the depending first part 108 of the pivotable contact 104 is then pushed through the slot 100.
  • the lower opening of the compression spring 132 is then brought into the exact position by means of the spring centering 120, the lower end 138 being guided through the opening 131 of the lower leg 62.
  • the screw 128 is then screwed into the threaded hole 124, the lower end 138 of the spring 132 being bent around the screw 128 and being clamped between the lower surface of the lower leg 62 and the screw head.
  • the length of the screw 128 is selected such that the pivotable contact 104 strikes the end of the screw 128 during the pivoting movement in a clockwise direction, assuming a specific second limit position.
  • the screw 128 fulfills two functions, namely ensuring a low electrical resistance of the connection between the spring 132 and the first contact 44 and the limitation of the pivoting movement of the pivotable contact 104.
  • the pivotable contact 104 will not reach the limit given by the screw 128. In the event of alignment errors, the pivotable contact 104 could be moved beyond the limit position, but this is then prevented by the screw 128.
  • the insulated nose 22 attached to the arm 16 carries a metallic contact bridge 142.
  • the contact bridge 142 contacts both pivotable contacts 104 and 106 and pivots it circularly in opposite directions, from a position indicated by solid lines in Fig. 7, to a position shown by broken lines.
  • insulated nose 22 will contact the upper edge 24 of lip 26 of bracket 28, actuating pivotable contacts 104 and 106 has ended and they have been pivoted about 15 degrees into a horizontal position without reaching the second limit position given by the screws 128 and 130.
  • the first contact 44 is connected to the elevator control 34 via a screw 146 and a wire 144, and the second contact 46 via a screw 150 and a wire 148 (FIG. 7). If the shaft door 12 is now mechanically locked in the closed position by pivoting the arm 16 down into the carrier 28, the contact bridge 142 actuates both pivotable contacts 104 and 106, with the pivoting movement by 15 degrees preventing oxidation of the pivotable contacts 104 and 106 from cleaning and the contact bridge 142 is caused and misalignments are compensated.
  • the contact bridge 142 completes an electrical circuit which, starting from the elevator control 34 via the wire 144, the screw 146, the first contact 44, the connection between the leg 62 of the first contact 44 and the end 138 of the spring 132, the spring 132, the metallurgical connection between the end 126 of the spring 132 and the pivotable contact 104, the adjoining, tight connection between the pivotable contact 104 and the contact bridge 142, the adjoining, tight connection between the contact bridge 142 and the pivotable contact 106, and from this leads back to the elevator control 34, this part of the electrical circuit containing the spring 134 being the same for the above corresponds to the first contact 44 described.
  • the good electrical connection through the springs 132 and 134 which is parallel to the higher resistance connection between the arms 92 and 94 and the pivotable contacts 104 and 106, ensures that an electrical signal can be generated which indicates the elevator control 34 that the shaft door 12 is mechanically locked.
  • the shaft door lock 10 is self-cleaning since the contact surfaces of the contact bridge 142 and the pivotable contacts 104 and 106 rub against one another continuously during each locking operation. This makes the shaft door lock 10 more reliable.
  • the screws 128 and 130 prevent inadmissible bending of the springs 132 and 134 if, when misalignment occurs, the movement of the pivotable contacts 104 and 106 caused by the contact bridge would exceed the second limit position.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Elevator Door Apparatuses (AREA)
  • Lock And Its Accessories (AREA)
  • Hinges (AREA)

Abstract

An electro-mechanical elevator hoistway door interlock which includes an electrical switch mounted adjacent to a hoistway door jamb having a pair of spaced pivotable contact actuatable from first to second positions by a bridging contact carrier by the associated hatch door. The bridging contact pivots the spaced pivotable contacts in opposite rotational directions as they are actuated between the two positions, providing a contact wiping action during each engagement and disengagement. Springs bias the pivotable contacts towards their first positions, and carry current in an active electrical circuit when the pair of spaced pivotable contacts are actuated by the bridging contact.

Description

Die Erfindung betrifft eine Aufzugsschachttür, und insbesondere eine elektromechanische Aufzugsschachttür-Verriegelung.The invention relates to an elevator shaft door, and in particular to an electromechanical elevator shaft door lock.

Schachttürverriegelungen sind erforderlich, um zu verhüten, dass eine Aufzugskabine angetrieben werden kann, bevor die Schachttür des Stockwerkes, auf dem sich die Aufzugskabine befindet, geschlossen und verriegelt ist. Nachdem die Kabine das betreffende Stockwerk verlassen hat, verhindert die Verriegelung, dass die Schachttür von der Stockwerkseite aus durch unbefugte Personen geöffnet werden kann, bis die Kabine wieder in der Einfahrtszone des Stockwerkes ist und anhält oder angehalten wird. Eine Schachttür wird jeweils mechanisch verriegelt, wenn sie die geschlossene Stellung erreicht. Nach der mechanischen Verriegelung wird ein elektrisches Signal erzeugt, welches der Aufzugssteuerung anzeigt, dass die Kabine angetrieben werden kann. (siehe z.B. Dokument US-A-4 483 420).Landing door locks are required to prevent an elevator car from being driven before the landing door of the floor on which the elevator car is located is closed and locked. After the cabin has left the relevant floor, the lock prevents the landing door from being opened by unauthorized persons from the floor side until the cabin is again in the entrance zone of the floor and stops or is stopped. A landing door is locked mechanically when it reaches the closed position. After the mechanical locking, an electrical signal is generated which indicates to the elevator control that the car can be driven. (see e.g. document US-A-4 483 420).

Da Schachttürverriegelungen immer dann, wenn eine Aufzugskabine an einem Stockwerk anhält, mechanisch und elektrisch betätigt werden, müssen sie robust und zuverlässig ausgeführt sein. Sie sollten ohne Schmierung auskommen, und die Erzeugung des elektrischen Signales zwecks Anzeige, dass die Schachttür verriegelt ist, sollte auch dann möglich sein, wenn die Bauteile, die hierbei zusammenwirken müssen, nicht fluchten. Wenn das elektrische Signal nicht erzeugt wird, nachdem die Schachttür einwandfrei geschlossen und verriegelt wurde, kann die Kabine nicht vom Stockwerk abfahren, so dass Servicepersonal gerufen werden muss, um die Störung zu beheben.Since shaft door locks are operated mechanically and electrically whenever an elevator car stops on a floor, they have to be robust and reliable. They should do without lubrication, and the generation of the electrical signal to indicate that the shaft door is locked should also be possible if the components that have to work together do not align. If the electrical signal is not generated after the shaft door has been properly closed and locked, the cabin cannot move down from the floor, so service personnel must be called to remedy the fault.

Der Erfindung liegt daher die Aufgabe zugrunde, den elektrischen Schalter, der nach einwandfreier mechanischer Verriegelung der Schachttür das elektrische Signal erzeugt, zu verbessern, und eine zuverlässige, unterhaltsfreie Ausführungsform zu schaffen.The invention is therefore based on the object, the electrical switch, after perfect mechanical Locking the shaft door generates the electrical signal, improve it, and create a reliable, maintenance-free embodiment.

Diese Aufgabe wird durch die im Patentanspruch 1 gekennzeichnete Erfindung gelöst.This object is achieved by the invention characterized in claim 1.

Hierbei weist der an einem Schachttürpfosten montierte elektrische Schalter einen ersten und zweiten länglichen, festen elektrischen Kontakt auf, welche aus oberen Teilen, die an einem isolierenden Montageblock befestigt sind und unteren Teilen, die vom Montageblock herabhängen, bestehen. Die unteren Teile sind derart geformt, dass eine elektrische Kontaktbrücke, welche von der Schachttür getragen wird, bei der Schliessbewegung der Schachttür in den elektrischen Schalter hinein bewegt wird und nachdem die Schachttür mechanisch verriegelt ist, durch eine Abwärtsbewegung den elektrischen Schalter betätigen kann, wobei die Abwärtsbewegung von der Schliessbewegung der Schachttür abgeleitet wird. Die unteren Teile des ersten und zweiten festen Kontaktes haben von der Seite gesehen eine im wesentlichen U-förmige Gestalt je mit einem oberen, einem unteren Schenkel und einer Verbindungsbucht, wobei die oberen Schenkel Bestandteile der oberen Teile der festen Kontakte sind und die unteren Schenkel eine nach aufwärts gerichtete Federzentrierung aufweisen. Die Buchten des ersten und zweiten festen Kontaktes weisen an ihren nicht benachbarten Kanten nach auswärts gerichtete Arme auf, in welchen geschlossene Schlitze vorgesehen sind, in denen schwenkbare Kontakte mit nach abwärts gerichteten Federzentrierungen gelagert sind. Zwischen den Federzentrierungen der Schenkel und schwenkbaren Kontakte sind Federn angeordnet, welche die schwenkbaren Kontakte in eine erste, schräge Stellung drücken. Mittels einer Kontaktbrücke, die nach der Verriegelung der Schachttür in geschlossener Stellung nach unten bewegt wird, werden die schwenkbaren Kontakte gleichzeitig in entgegengesetzter Drehrichtung gegen die Federkraft in eine zweite Stellung geschwenkt. Hierbei werden Fluchtungsfehler zwischen den schwenkbaren Kontakten ausgeglichen und eine gute Selbstreinigung durch Reibung zwischen den Kontakten und der Kontaktbrücke bei jedem Schliessen und Öffnen erzielt. Die Federn sind ein aktiver Teil des elektrischen Kreises, der eingeschaltet wird, wenn die schwenkbaren Kontakte durch die Kontaktbrücke betätigt werden, wobei die Federn und die Verbindungen zwischen den schwenkbaren Kontakten und den Schlitzen in den zugeordneten Armen parallel geschaltet sind.Here, the electrical switch mounted on a shaft door jamb has first and second elongated, fixed electrical contacts, which consist of upper parts which are fastened to an insulating mounting block and lower parts which depend from the mounting block. The lower parts are shaped in such a way that an electrical contact bridge, which is supported by the shaft door, is moved into the electrical switch when the shaft door is closed and after the shaft door is mechanically locked, the electrical switch can be actuated by a downward movement, the Downward movement is derived from the closing movement of the shaft door. When viewed from the side, the lower parts of the first and second fixed contacts have a substantially U-shaped shape, each with an upper, a lower leg and a connecting bay, the upper legs being components of the upper parts of the fixed contacts and the lower legs one have upward spring centering. The bays of the first and second fixed contacts have outwardly directed arms on their non-adjacent edges, in which closed slots are provided in which pivotable contacts with downwardly directed spring centers are mounted. Between the spring centers of the legs and pivotable contacts, springs are arranged which press the pivotable contacts into a first, oblique position. By means of a contact bridge, which is moved downwards after the shaft door has been locked, the pivotable contacts are simultaneously turned in the opposite direction of rotation Spring force pivoted into a second position. Alignment errors between the swiveling contacts are compensated for and good self-cleaning is achieved by friction between the contacts and the contact bridge with each closing and opening. The springs are an active part of the electrical circuit which is switched on when the pivotable contacts are actuated by the contact bridge, the springs and the connections between the pivotable contacts and the slots in the associated arms being connected in parallel.

Im folgenden wird die Erfindung anhand eines auf der Zeichnung dargestellten Ausführungsbeispieles näher erläutert. Es zeigen:

Fig. 1
eine Ansicht der erfindungsgemässen Schachttürverriegelung und eines Teiles der Schachttür,
Fig. 2
eine Seitenansicht der Schachttürverriegelung gemäss Fig. 1,
Fig. 3
eine perspektivische Ansicht eines linken festen Kontaktes der Schachttürverriegelung gemäss Fig. 1 und 2,
Fig. 4
eine perspektivische Ansicht eines rechten festen Kontaktes der Schachttürverriegelung gemäss Fig. 1 und 2,
Fig. 5
eine perspektivische Ansicht eines schwenkbaren Kontaktes der Schachttürverriegelung gemäss Fig. 1 und 2,
Fig. 6
eine Ansicht einer Feder der Schachttürverriegelung gemäss Fig. 1 und 2,
Fig. 7
eine Ansicht der Anordnung der festen Kontakte der Schachttürverriegelung gemäss Fig. 1 und 2, mit den in zwei Stellungen dargestellten schwenkbaren Kontakten und
Fig. 8
eine Ansicht einer der beiden festen Kontakte der Kontaktanordnung gemäss Fig. 7, mit der erfindungsgemässen elektrischen Verbindung der Feder gemäss Fig. 6.
The invention is explained in more detail below with reference to an exemplary embodiment shown in the drawing. Show it:
Fig. 1
2 shows a view of the shaft door lock according to the invention and a part of the shaft door,
Fig. 2
2 shows a side view of the shaft door lock according to FIG. 1,
Fig. 3
2 shows a perspective view of a left fixed contact of the shaft door lock according to FIGS. 1 and 2,
Fig. 4
2 shows a perspective view of a right fixed contact of the shaft door lock according to FIGS. 1 and 2,
Fig. 5
2 shows a perspective view of a pivotable contact of the shaft door lock according to FIGS. 1 and 2,
Fig. 6
2 shows a view of a spring of the shaft door lock according to FIGS. 1 and 2,
Fig. 7
a view of the arrangement of the fixed contacts of the shaft door lock according to FIGS. 1 and 2, with the pivotable contacts and shown in two positions
Fig. 8
7 shows a view of one of the two fixed contacts of the contact arrangement according to FIG. 7, with the inventive electrical connection of the spring according to FIG. 6.

In der Fig. 1 ist mit 10 eine Schachttürverriegelung bezeichnet, die an einem Schachttürpfosten 14 angeordnet ist und mit einer nur teilweise dargestellten Schachttür 12 in Wirkverbindung steht. Wie aus dem Aufzugsbau bekannt, kann mittels geeigneter, an der Kabinen- und an der Schachttür 12 vorgesehener, bei einem Halt auf einem Stockwerk ineinandergreifender Einrichtungen beim Öffnen der Kabinentür auch die Schachttür 12 geöffnet werden. Hierbei wird die anfängliche Öffnungsbewegung der Kabinentür in eine dem Uhrzeigersinn entgegengesetzte Drehbewegung eines an der Schachttür 12 angeordneten, um eine Achse 18 schwenkbaren Armes 16, umgesetzt. Am Arm 16 ist eine isolierte Nase 22 befestigt, die einen Schenkel 20 aufweist, der bei der Drehbewegung über die obere Kante 24 einer Lippe 26 angehoben wird. Die Lippe 26 ist Teil eines Trägers 28, welcher an einer Schachtwand 30, unmittelbar an den Schachttürpfosten 14 angrenzend, befestigt ist. Die Schachttür 12 ist damit mechanisch entriegelt und wird in Fortsetzung der Öffnungsbewegung der Kabinentür von dieser mitgenommen. Wenn die Kabinentür wieder schliesst und die Schachttür 12 die geschlossene Stellung erreicht, verschwindet die Kraft, die den Arm 16 in der angehobenen Lage hält, so dass er aufgrund seines Gewichtes im Uhrzeigersinn drehend nach unten fällt. Hierbei verklinkt der Schenkel 20 wieder mit der Lippe 26 des Trägers 28, so dass die Schachttür 12 nicht mehr geöffnet werden kann.In Fig. 1, 10 denotes a shaft door lock, which is arranged on a shaft door jamb 14 and is operatively connected to a shaft door 12 which is only partially shown. As is known from elevator construction, the shaft door 12 can also be opened by means of suitable devices which are provided on the car door and on the shaft door 12 and which interlock when stopping on one floor when the car door is opened. In this case, the initial opening movement of the cabin door is converted into a counterclockwise rotary movement of an arm 16 arranged on the shaft door 12 and pivotable about an axis 18. An insulated nose 22 is attached to the arm 16 and has a leg 20 which is raised over the upper edge 24 of a lip 26 during the rotational movement. The lip 26 is part of a support 28 which is fastened to a shaft wall 30, directly adjacent to the shaft door jamb 14. The shaft door 12 is thus mechanically unlocked and is carried along by the cabin door as the opening movement continues. When the cabin door closes again and the shaft door 12 reaches the closed position, the force that holds the arm 16 in the raised position disappears, so that due to its weight it falls downward in a clockwise direction. Here, the leg 20 latches again with the lip 26 of the carrier 28, so that the shaft door 12 can no longer be opened.

Ein elektrischer Schalter 32 ist derart mit dem Träger 28 verbunden, dass nach der mechanischen Verriegelung der Schachttür 12 ein die Verriegelung anzeigendes elektrisches Signal für die Aufzugssteuerung 34 (Fig. 7) erzeugt wird. Nach Empfang dieses Signales kann die Aufzugssteuerung 34 ein Startsignal für den Aufzugsantrieb, beispielsweise Treibscheiben- oder Hydraulikantrieb, erzeugen.An electrical switch 32 is in this way with the carrier 28 connected that after the mechanical locking of the shaft door 12, an electrical signal indicating the locking is generated for the elevator control 34 (FIG. 7). After receiving this signal, the elevator control 34 can generate a start signal for the elevator drive, for example a traction sheave or hydraulic drive.

Der elektrische Schalter 32 weist eine metallische Montagegrundplatte 36 auf, an welcher eine Platte 38 aus elektrisch isolierendem Material angeordnet ist. Auf der Platte 38 ist eine Kontaktanordnung 42 befestigt, die aus einem elektrisch isolierenden Montageblock 40 und einem ersten und zweiten länglichen metallischen Kontakt 44 und 46 besteht, wobei die Kontakte in einem horizontalen Abstand voneinander angeordnet sind.The electrical switch 32 has a metallic mounting base plate 36, on which a plate 38 made of electrically insulating material is arranged. Mounted on the plate 38 is a contact arrangement 42, which consists of an electrically insulating mounting block 40 and a first and second elongated metallic contacts 44 and 46, the contacts being arranged at a horizontal distance from one another.

Gemäss Fig. 3 weist der erste längliche metallische Kontakt 44 einen oberen und einen unteren Teil 48 und 54 auf, wobei der obere Teil 48 mittels Schrauben 50 und 52 am Montageblock 40 befestigt ist. Der untere Teil 54 erstreckt sich von der unteren Seite 56 des Montageblockes 40 aus nach unten (Fig. 2). Der untere Teil 54 hat von der Seite gesehen eine im wesentlichen U-förmige Gestalt, die aus einer Bucht 58 und einem oberen und unteren Schenkel 60 und 62 gebildet ist, wobei der obere Schenkel 60 Bestandteil des oberen Teiles 48 des ersten Kontaktes 44 ist.3, the first elongated metallic contact 44 has an upper and a lower part 48 and 54, the upper part 48 being fastened to the mounting block 40 by means of screws 50 and 52. The lower part 54 extends downward from the lower side 56 of the mounting block 40 (FIG. 2). When viewed from the side, the lower part 54 has a substantially U-shaped configuration which is formed from a bay 58 and an upper and lower leg 60 and 62, the upper leg 60 being part of the upper part 48 of the first contact 44.

In gleicher Weise weist gemäss Fig. 4 der zweite längliche metallische Kontakt 46 einen oberen und einen unteren Teil 68 und 74 auf, wobei der obere Teil 68 mittels Schrauben 70 und 72 am Montageblock 40 befestigt ist. Der untere Teil 74, der sich vom Montageblock 40 aus nach unten erstreckt, hat von der Seite gesehen eine im wesentlichen U-förmige Gestalt, die aus einer Bucht 78 und einem oberen und unteren Schenkel 80 und 82 gebildet ist, wobei der obere Schenkel 80 Bestandteil des oberen Teiles 68 des zweiten Kontaktes 46 ist.4, the second elongated metallic contact 46 has an upper and a lower part 68 and 74, the upper part 68 being fastened to the mounting block 40 by means of screws 70 and 72. The lower portion 74, which extends downward from the mounting block 40, has a generally U-shaped shape when viewed from the side, which is formed from a bay 78 and upper and lower legs 80 and 82, the upper leg 80 Is part of the upper part 68 of the second contact 46.

Die Buchten 58 und 78 haben innere Kanten 84 und 86, die mit Abstand voneinander benachbart sind und äussere, nicht benachbarte Kanten 88 und 90, die nach aussen gerichtete Arme 92 und 94 aufweisen. Die Arme 92 und 94 können mit den zugeordneten Buchten 58 und 78 zusammen flach geformt und anschliessend nach aussen gebogen werden, wobei sie einen Winkel von 90 Grad zu den äusseren Oberflächen 96 und 98 der Buchten 58 und 78 bilden.Bays 58 and 78 have inner edges 84 and 86 which are spaced apart from one another and outer non-adjacent edges 88 and 90 which have outwardly directed arms 92 and 94. The arms 92 and 94 can be formed flat together with the associated bays 58 and 78 and then bent outwards, forming an angle of 90 degrees to the outer surfaces 96 and 98 of the bays 58 and 78.

In den Armen 92 und 94 sind geschlossene Schlitze 100 bzw. 102 vorgesehen, welche horizontal zueinander ausgerichtet sind. Die Schlitze 100 und 102 verlaufen in ihrer Längsrichtung senkrecht zur Platte 38 nach aussen. Die Schlitze 100 und 102 sind an den inneren sich gegenüber liegenden Oberflächen der Arme 92 und 94 nach oben breiter als an den äusseren Oberflächen. Dadurch kann eine vorherbestimmte Schwenkbewegung von in den Schlitzen 100 und 102 angeordneten schwenkbaren Kontakten erreicht werden, wobei ein im Schlitz 100 angeordneter erster schwenkbarer Kontakt 104 von gleicher Konstruktion wie ein im Schlitz 102 angeordneter zweiter schwenkbarer Kontakt 106 ist, so dass im folgenden nur der erste schwenkbare Kontakt 104 näher beschrieben wird.Closed slots 100 and 102 are provided in the arms 92 and 94, which are aligned horizontally to one another. The slots 100 and 102 extend in the longitudinal direction perpendicular to the plate 38 to the outside. The slots 100 and 102 are wider on the inner, opposite surfaces of the arms 92 and 94 upwards than on the outer surfaces. As a result, a predetermined pivoting movement of pivotable contacts arranged in the slots 100 and 102 can be achieved, a first pivotable contact 104 arranged in the slot 100 being of the same construction as a second pivotable contact 106 arranged in the slot 102, so that in the following only the first one pivotable contact 104 is described in more detail.

Gemäss Fig. 5 weist der erste schwenkbare Kontakt 104 einen ersten und einen zweiten Teil 108 und 110 auf, die an gegenüberliegenden Seiten des Armes 92 angeordnet sind. Der erste Teil 108 ist nach unten abgebogen, wobei er einen Winkel 112 von ungefähr 75 Grad zu einer durch den zweiten Teil 110 bestimmten Ebene bildet. Auf diese Weise kann der erste schwenkbare Kontakt 104 mit Bezug auf Fig. 1 aus einer horizontalen Lage im Gegenuhrzeigersinn um ungefähr 15 Grad schwenken, wobei er beim Anschlagen des ersten Teiles 108 am Arm 92 eine begrenzte, erste Stellung einnimmt. Der zweite Teil 110 weist eine Schulter 114 auf, die unmittelbar am Arm 92 angrenzt und mit einer Abschrägung 116 aus der Vertikalen von ungefähr 15 Grad versehen ist, die sich während der Schwenkbewegung des ersten Kontaktes 104 der sich verändernden Breite des Schlitzes 100 anpasst. Der zweite Teil 110 weist an seiner abwärts gerichteten Oberfläche eine Federzentrierung 118 auf und ist mit zwei Öffnungen 119 und 119′ versehen.5, the first pivotable contact 104 has a first and a second part 108 and 110, which are arranged on opposite sides of the arm 92. The first part 108 is bent downwards, forming an angle 112 of approximately 75 degrees to a plane determined by the second part 110. In this way, the first pivotable contact 104 can pivot counterclockwise from a horizontal position with respect to FIG. 1 by approximately 15 degrees, assuming a limited, first position when the first part 108 strikes the arm 92. The second part 110 has a shoulder 114 which is immediately adjacent to the arm 92 and is provided with a bevel 116 from the vertical of approximately 15 degrees, which during the Pivotal movement of the first contact 104 adapts to the changing width of the slot 100. The second part 110 has on its downward surface a spring centering 118 and is provided with two openings 119 and 119 '.

Wie vorstehend erwähnt, ist der zweite schwenkbare Kontakt 106 genau gleich ausgebildet wie der erste schwenkbare Kontakt 104. Mit Bezug auf Fig. 1 kann der zweite schwenkbare Kontakt 106 aus einer horizontalen Lage im Uhrzeigersinn um ungefähr 15 Grad schwenken, wobei der beim Anschlagen des ersten Teiles 108 am Arm 94 eine begrenzte, erste Stellung einnimmt.As mentioned above, the second pivotable contact 106 is constructed in exactly the same way as the first pivotable contact 104. With reference to FIG. 1, the second pivotable contact 106 can pivot clockwise by approximately 15 degrees from a horizontal position, the one when the first is struck Part 108 on arm 94 occupies a limited, first position.

Gemäss Fig. 3 und 4 weisen die unteren Schenkel 62 und 82 des ersten und zweiten Kontaktes 44 und 46 an ihren aufwärts gerichteten Oberflächen Federzentrierungen 120 und 122 auf. In den Federzentrierungen 120 und 122 und den unteren Schenkeln 62 und 82 sind Gewindelöcher 124 und 126 vorgesehen, die der Aufnahme von Schrauben 128 und 130 dienen, welche wie nachstehend näher beschrieben eine Doppelfunktion erfüllen. In den unteren Schenkeln sind ausserdem Öffnungen 131 und 133 vorgesehen.3 and 4, the lower legs 62 and 82 of the first and second contacts 44 and 46 have spring centers 120 and 122 on their upward-facing surfaces. In the spring centers 120 and 122 and the lower legs 62 and 82, threaded holes 124 and 126 are provided, which serve to receive screws 128 and 130, which serve a double function as described in more detail below. Openings 131 and 133 are also provided in the lower legs.

Mit 132 und 134 sind eine erste und eine zweite, auf Druck beanspruchte Feder bezeichnet, welche die schwenkbaren Kontakte 104 und 106 im Gegenuhrzeigersinn bzw. im Uhrzeigersinn bewegen (Fig. 1). Wenn die Bewegung nicht behindert ist, werden die Kontakte 104 und 106 durch die Federn 132 und 134 in die erste Stellung gedrückt (Fig. 7). Die erste Feder 132 wird zwischen der Federzentrierung 118 des ersten schwenkbaren Kontaktes 104 und der Federzentrierung 120 des ersten Kontaktes 44 gehalten, während die zweite Feder 134 zwischen der Federzentrierung 118 des zweiten schwenkbaren Kontaktes 106 und der Federzentrierung 122 des zweiten Kontaktes 46 gehalten wird. Die erste und die zweite Feder 132 und 134 sind von gleicher Konstruktion, so dass im folgenden nur die erste Feder 132 näher beschrieben wird.With 132 and 134 are designated a first and a second spring under pressure, which move the pivotable contacts 104 and 106 in the counterclockwise and clockwise directions (Fig. 1). If the movement is not hindered, the contacts 104 and 106 are pressed into the first position by the springs 132 and 134 (FIG. 7). The first spring 132 is held between the spring centering 118 of the first pivotable contact 104 and the spring centering 120 of the first contact 44, while the second spring 134 is held between the spring centering 118 of the second pivoting contact 106 and the spring centering 122 of the second contact 46. The first and second springs 132 and 134 are the same Construction, so that only the first spring 132 is described in more detail below.

In der Fig. 6 sind mit 136 und 138 ein oberes und ein unteres Ende der Feder 132 bezeichnet, die beispielsweise vier bis fünf Windungen aufweist. Das obere Ende 136 ist derart abgebogen, dass es eine umgekehrte U-Form bildet. Das untere Ende 138 wird wie nachfolgend näher beschrieben erst während der Montage verformt.6, 136 and 138 denote an upper and a lower end of the spring 132, which has, for example, four to five turns. The upper end 136 is bent such that it forms an inverted U-shape. As described in more detail below, the lower end 138 is only deformed during assembly.

Die schwenkbaren Kontakte 104 und 106 und die festen Kontakte 44 und 46 werden in gleicher Weise zusammengesetzt, so dass im folgenden lediglich die Montage des schwenkbaren Kontaktes 104 und des festen Konaktes 44 beschrieben wird. Wie aus Fig. 8 ersichtlich, wird das obere Ende 136 der Feder 132 durch die Öffnung 119 des schwenkbaren Kontaktes 104 geführt, wobei die obere Öffnung der Feder 132 in die erforderliche Position zur Federzentrierung 118 gebracht wird. Das obere Ende 136 wird dann in der Öffnung 119 derart verformt, dass zwischen der Feder 132 und dem schwenkbaren Kontakt 104 eine metallurgische Verbindung von kleinem elektrischen Widerstand entsteht. Danach wird der herabhängende erste Teil 108 des schwenkbaren Kontaktes 104 durch den Schlitz 100 geschoben. Die untere Öffnung der Druckfeder 132 wird dann mittels der Federzentrierung 120 in die genaue Position gebracht, wobei das untere Ende 138 durch die Öffnung 131 des unteren Schenkels 62 geführt wird. Sodann wird die Schraube 128 in das Gewindeloch 124 eingeschraubt, wobei das untere Ende 138 der Feder 132 um die Schraube 128 gebogen und zwischen der unteren Oberfläche des unteren Schenkels 62 und dem Schraubenkopf festgeklemmt wird. Die Länge der Schraube 128 ist derart gewählt, dass der schwenkbare Kontakt 104 bei der Schwenkbewegung im Uhrzeigersinn am Ende der Schraube 128 anschlägt, wobei er eine bestimmte zweite Grenzlage einnimmt. Auf diese Weise erfüllt die Schraube 128 zwei Funktionen, nämlich die Gewährleistung eines geringen elektrischen Widerstandes der Verbindung zwischen der Feder 132 und dem ersten Kontakt 44 und die Begrenzung der Schwenkbewegung des schwenkbaren Kontaktes 104. Im normalen Betrieb wird der schwenkbare Kontakt 104 die durch die Schraube 128 gegebene Begrenzung nicht erreichen. Bei Fluchtungsfehlern könnte der schwenkbare Kontakt 104 über die Grenzlage hinaus bewegt werden, was dann jedoch von der Schraube 128 verhindert wird.The pivotable contacts 104 and 106 and the fixed contacts 44 and 46 are assembled in the same way, so that only the assembly of the pivotable contact 104 and the fixed contact 44 is described below. As can be seen from FIG. 8, the upper end 136 of the spring 132 is guided through the opening 119 of the pivotable contact 104, the upper opening of the spring 132 being brought into the required position for the spring centering 118. The upper end 136 is then deformed in the opening 119 such that a metallurgical connection of low electrical resistance is created between the spring 132 and the pivotable contact 104. The depending first part 108 of the pivotable contact 104 is then pushed through the slot 100. The lower opening of the compression spring 132 is then brought into the exact position by means of the spring centering 120, the lower end 138 being guided through the opening 131 of the lower leg 62. The screw 128 is then screwed into the threaded hole 124, the lower end 138 of the spring 132 being bent around the screw 128 and being clamped between the lower surface of the lower leg 62 and the screw head. The length of the screw 128 is selected such that the pivotable contact 104 strikes the end of the screw 128 during the pivoting movement in a clockwise direction, assuming a specific second limit position. In this way, the screw 128 fulfills two functions, namely ensuring a low electrical resistance of the connection between the spring 132 and the first contact 44 and the limitation of the pivoting movement of the pivotable contact 104. In normal operation, the pivotable contact 104 will not reach the limit given by the screw 128. In the event of alignment errors, the pivotable contact 104 could be moved beyond the limit position, but this is then prevented by the screw 128.

Wie aus den Fig. 1 und 2 ersichtlich, trägt die am Arm 16 befestigte isolierte Nase 22 eine metallische Kontaktbrücke 142. Wenn die Schachttür 12 die geschlossene Stellung erreicht und der Arm 16 nach abwärts schwenkt, berührt die Kontaktbrücke 142 beide schwenkbaren Kontakte 104 und 106 und schwenkt diese kreisförmig in entgegengesetzte Richtungen, von einer in Fig. 7 durch ausgezogene Linien gekennzeichneten, zu einer durch gestrichelte Linien dargestellten Stellung. Wenn der Arm 16, die isolierte Nase 22 und der Träger 28, der den elektrischen Schalter 32 trägt, genau ausgerichtet sind, wird die isolierte Nase 22 die obere Kante 24 der Lippe 26 des Trägers 28 berühren, wobei die Betätigung der schwenkbaren Kontakte 104 und 106 beendet ist und sie um ungefähr 15 Grad in eine horizontale Lage geschwenkt wurden, ohne dass die durch die Schrauben 128 und 130 gegebene zweite Grenzlage erreicht wurde.1 and 2, the insulated nose 22 attached to the arm 16 carries a metallic contact bridge 142. When the landing door 12 reaches the closed position and the arm 16 pivots downward, the contact bridge 142 contacts both pivotable contacts 104 and 106 and pivots it circularly in opposite directions, from a position indicated by solid lines in Fig. 7, to a position shown by broken lines. When the arm 16, insulated nose 22, and bracket 28 carrying electrical switch 32 are properly aligned, insulated nose 22 will contact the upper edge 24 of lip 26 of bracket 28, actuating pivotable contacts 104 and 106 has ended and they have been pivoted about 15 degrees into a horizontal position without reaching the second limit position given by the screws 128 and 130.

Der erste Kontakt 44 ist über eine Schraube 146 und einen Draht 144, und der zweite Kontakt 46 über eine Schraube 150 und einen Draht 148 mit der Aufzugssteuerung 34 verbunden (Fig. 7). Wenn nun die Schachttür 12 in geschlossener Stellung durch Herabschwenken des Armes 16 in den Träger 28 mechanisch verriegelt wird, betätigt die Kontaktbrücke 142 beide schwenkbaren Kontakte 104 und 106, wobei durch die Schwenkbewegung um 15 Grad ein eine Oxydation verhindernder Reinigungsvorgang der schwenkbaren Kontakte 104 und 106 und der Kontaktbrücke 142 hervorgerufen wird und Fluchtungsfehler ausgeglichen werden. Die Kontaktbrücke 142 vervollständigt einen elektrischen Kreis, der ausgehend von der Aufzugssteuerung 34 über den Draht 144, die Schraube 146, den ersten Kontakt 44, die Verbindung zwischen dem Schenkel 62 des ersten Kontaktes 44 und dem Ende 138 der Feder 132, die Feder 132, die metallurgische Verbindung zwischen dem Ende 126 der Feder 132 und dem schwenkbaren Kontakt 104, die sich einstellende, fest anliegende Verbindung zwischen dem schwenkbaren Kontakt 104 und der Kontaktbrücke 142, die sich einstellende, fest anliegende Verbindung zwischen der Kontaktbrücke 142 und dem schwenkbaren Kontakt 106, und von diesem zurück zur Aufzugssteuerung 34 führt, wobei dieser, die Feder 134 enthaltende Teil des elektrischen Kreises dem vorstehend für den ersten Kontakt 44 beschriebenen entspricht. Die gute elektrische Verbindung durch die Federn 132 und 134, welche parallel zu der einen höheren Widerstand aufweisenden Verbindung zwischen den Armen 92 und 94 und den schwenkbaren Kontakten 104 und 106 liegt, gewährleistet, dass ein elektrisches Signal erzeugt werden kann, welches der Aufzugssteuerung 34 anzeigt, dass die Schachttür 12 mechanisch verriegelt ist. Die Schachttürverriegelung 10 ist selbstreinigend, da bei jedem Verriegelungsvorgang die Kontaktflächen der Kontaktbrücke 142 und der schwenkbaren Kontakte 104 und 106 ständig aufeinander reiben. Dadurch wird die Schachttürverriegelung 10 zuverlässiger. Die Schrauben 128 und 130 verhindern ein unzulässiges Verbiegen der Federn 132 und 134, wenn bei Auftreten von Fluchtungsfehlern die durch die Kontaktbrücke verursachte Bewegung der schwenkbaren Kontakte 104 und 106 über die zweite Grenzlage hinausgehen würde.The first contact 44 is connected to the elevator control 34 via a screw 146 and a wire 144, and the second contact 46 via a screw 150 and a wire 148 (FIG. 7). If the shaft door 12 is now mechanically locked in the closed position by pivoting the arm 16 down into the carrier 28, the contact bridge 142 actuates both pivotable contacts 104 and 106, with the pivoting movement by 15 degrees preventing oxidation of the pivotable contacts 104 and 106 from cleaning and the contact bridge 142 is caused and misalignments are compensated. The contact bridge 142 completes an electrical circuit which, starting from the elevator control 34 via the wire 144, the screw 146, the first contact 44, the connection between the leg 62 of the first contact 44 and the end 138 of the spring 132, the spring 132, the metallurgical connection between the end 126 of the spring 132 and the pivotable contact 104, the adjoining, tight connection between the pivotable contact 104 and the contact bridge 142, the adjoining, tight connection between the contact bridge 142 and the pivotable contact 106, and from this leads back to the elevator control 34, this part of the electrical circuit containing the spring 134 being the same for the above corresponds to the first contact 44 described. The good electrical connection through the springs 132 and 134, which is parallel to the higher resistance connection between the arms 92 and 94 and the pivotable contacts 104 and 106, ensures that an electrical signal can be generated which indicates the elevator control 34 that the shaft door 12 is mechanically locked. The shaft door lock 10 is self-cleaning since the contact surfaces of the contact bridge 142 and the pivotable contacts 104 and 106 rub against one another continuously during each locking operation. This makes the shaft door lock 10 more reliable. The screws 128 and 130 prevent inadmissible bending of the springs 132 and 134 if, when misalignment occurs, the movement of the pivotable contacts 104 and 106 caused by the contact bridge would exceed the second limit position.

Claims (5)

  1. Electromechanical lift shaft door latch which latches a shaft door (12) mechanically in a closed setting and produces an electrical signal, which indicates the latching that has taken place, and which consists of a first latch part carried by the shaft door (12), a contact bridge (142) arranged at the first latch part, a second latch part, which is fastened at the shaft door post (14) and cooperates with the first latch part for the purpose of preventing the unauthorised opening of the closed shaft door (12), and an electrical switch (32), which is connected with the second latch part and is actuated for the purpose of producing an electrical signal from the contact bridge (142) when the shaft door (12) is closed and latched by means of the first and the second latch part, characterised thereby,
    - that the electrical switch (32) comprises an insulating mounting block (40) and a first and a second elongate fixed electrical contact (44, 46),
    - that the first and the second fixed electrical contact (44, 46) each comprises a respective upper and a respective lower part, wherein the upper part (48, 68) is fastened at the insulating mounting block (40) and the lower part (54, 74) depends from the insulating mounting block (40),
    - that the lower part of the first and the second fixed electrical contact (44, 46) in side elevation has a U-shaped structure which is formed of a recessed portion (58, 78), an upper limb (60, 80) and a lower limb (62, 82),
    - that the recessed portions (58, 78) of the first and the second fixed electrical contact (44, 46) display inner edges (84, 86) and outer edges (88, 90), wherein the inner edges (84, 86) are neighbouring each at a spacing from the other and the outer edges (88, 90) are not neighbouring,
    - that the upper limbs (60, 80) are components of the upper parts (48, 68) of the first and the second fixed electrical contact (44, 46)
    - that the lower limbs (62, 82) of the first and the second fixed electrical contact (44, 46) comprise upwardly directed centring springs (120, 122),
    - that the recessed portions (58, 78) of the first and the second fixed electrical contact (44, 46) at the outer, not neighbouring edges (88, 90) comprise outwardly directed arms (92, 94), in which closed slots (100, 102) are provided,
    - that pivotable contacts (104, 106), which comprise downwardly directed centring springs (118), are arranged in the slots (100, 102),
    - that a respective spring (132, 134), which urges the pivotable contact (104, 106) into a first setting, is arranged between the centring springs (120, 122) of the lower limbs (62, 82) and the centring springs (118) of the pivotable contacts (104, 106) of the first and the second fixed electrical contact (44, 46) and
    - that the pivotable contacts (104, 106) of the first and the second fixed electrical contact (44, 46) are by the downward movement of the contact bridge (142) pivoted at the same time in opposite directions of rotation and against the spring force of the springs (132, 134) into a second setting, whilst a cleaning process takes place between the pivotable contacts (104, 106) and the contact bridge (142).
  2. Electromechanical lift shaft door latch according to patent claim 1, characterised thereby, that the pivotable contacts (104, 106) each comprise a first and a second part (108, 110) arranged at opposite sides of the arm (92, 94) concerned, wherein the second part (110) comprises the centring spring (118) and the first part (108) on abutment at the arm (92, 94) concerned determines the first setting of the pivotable contacts (104, 106).
  3. Electromechanical lift shaft door latch according to patent claim 1, characterised thereby, that threaded holes (124, 126), in which screws (128, 130) are arranged, which extend towards the respectively associated pivotable contact (104, 106) and have a length by which a certain limitation of the downward movement of pivotable contact (104, 106) concerned is given, are provided in the centring springs (120, 122) of the lower limbs (62, 82).
  4. Electromechanical lift shaft door latch according to patent claim 1, wherein threaded holes (124, 126), in which screws (128, 130) are arranged, are provided in the centring springs (120, 122) of the lower limbs (62, 82), characterised thereby, that the springs (132, 134) each comprise a respective upper and a respective lower end (136, 138), wherein the lower end (138) is clamped fast between the associated screw (128, 130) and the lower limb (62, 82) and the upper end (136) is connected with the associated pivotable contact (104, 106) in such a manner that an electrical connection of low resistance results between the upper part (48, 68) of the first and the second fixed electrical contact (44, 46) and the associated pivotable contacts (104, 106).
  5. Electromechanical lift shaft door latch according to patent claim 1, characterised thereby, that the second latch part comprises a carrier (28), at which an upwardly directed lip (26) is provided, and that the first latch part comprises an U-shaped recess with a recessed portion and a downwardly directed limb (20), which during the downward movement with the shaft door (12) closed interengages with the lip (26), on which the recessed portion abuts against the lip (26), the downward movement of the contact bridge (142) is terminated and the pivotable contacts (104, 106) assume the second setting.
EP89113854A 1988-08-12 1989-07-27 Lock for the door of a lift shaft Expired - Lifetime EP0354414B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89113854T ATE88981T1 (en) 1988-08-12 1989-07-27 ELEVATOR HOSE DOOR LOCK.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US231407 1988-08-12
US07/231,407 US4840254A (en) 1988-08-12 1988-08-12 Elevator hoistway door interlock

Publications (3)

Publication Number Publication Date
EP0354414A2 EP0354414A2 (en) 1990-02-14
EP0354414A3 EP0354414A3 (en) 1990-07-18
EP0354414B1 true EP0354414B1 (en) 1993-05-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89113854A Expired - Lifetime EP0354414B1 (en) 1988-08-12 1989-07-27 Lock for the door of a lift shaft

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Country Link
US (1) US4840254A (en)
EP (1) EP0354414B1 (en)
KR (1) KR900003054A (en)
AT (1) ATE88981T1 (en)
DE (1) DE58904257D1 (en)
ES (1) ES2041907T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2090856T3 (en) * 1992-02-24 1996-10-16 Otis Elevator Co ROTARY LOCKING DEVICE FOR AN ELEVATOR DOOR.
IT1316302B1 (en) * 2000-01-26 2003-04-10 Sematic Italia Spa MODULAR LOCK FOR LIFT DOORS
US6659514B2 (en) * 2001-05-04 2003-12-09 Thyssen Elevator Capital Corp. Swinging elevator hatchway door interlock
CN105489408B (en) * 2016-01-14 2018-06-22 上海华晟电器有限公司 A kind of electromagnetic type elevator-distance switch device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE689749C (en) * 1935-09-27 1940-04-01 Waldemar Rothmann Door contact, especially for elevators
US2307542A (en) * 1942-03-18 1943-01-05 Otis Elevator Co Interlock for elevator doors
FR1153293A (en) * 1956-05-09 1958-03-04 Light switch
DE1456405A1 (en) * 1966-11-15 1969-05-08 Winter Fritz Safety device on passenger lifts
DE1640649B1 (en) * 1966-12-07 1972-02-03 Hans & Josef Kronenberg Ohg ELECTRIC SAFETY SWITCH
US4483420A (en) * 1982-07-01 1984-11-20 Byrne Francis J Elevator door interlocking apparatus

Also Published As

Publication number Publication date
DE58904257D1 (en) 1993-06-09
ATE88981T1 (en) 1993-05-15
KR900003054A (en) 1990-03-23
EP0354414A2 (en) 1990-02-14
ES2041907T3 (en) 1993-12-01
US4840254A (en) 1989-06-20
EP0354414A3 (en) 1990-07-18

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