EP0805775B1 - Mecanisme de manoeuvre du verrou d'une porte d'ascenseur - Google Patents

Mecanisme de manoeuvre du verrou d'une porte d'ascenseur Download PDF

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Publication number
EP0805775B1
EP0805775B1 EP95942344A EP95942344A EP0805775B1 EP 0805775 B1 EP0805775 B1 EP 0805775B1 EP 95942344 A EP95942344 A EP 95942344A EP 95942344 A EP95942344 A EP 95942344A EP 0805775 B1 EP0805775 B1 EP 0805775B1
Authority
EP
European Patent Office
Prior art keywords
cam
pivot
actuating
link
link 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.)
Expired - Lifetime
Application number
EP95942344A
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German (de)
English (en)
Other versions
EP0805775A1 (fr
Inventor
Thomas Lundh
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.)
Alimak AB
Original Assignee
Alimak AB
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Filing date
Publication date
Application filed by Alimak AB filed Critical Alimak AB
Publication of EP0805775A1 publication Critical patent/EP0805775A1/fr
Application granted granted Critical
Publication of EP0805775B1 publication Critical patent/EP0805775B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the invention relates to an actuating mechanism for a lift door catch in accordance with the preamble of claim 1, said catch blocking the lift door and preventing it from being opened, except when the lift cage is at the landing equipped with the lift door.
  • the actuating mechanism of the invention is intended for demountable building hoists and for industrial applications.
  • the release of the door catch usually is automatic, whereas the catch in building hoists in general is manually released by means of a particular actuating mechanism, which prevents the transfer of a release motion to the hoist door catch, if the hoist cage is anywhere else than at the landing in question.
  • a connection is established between an actuating member and the hoist door catch, so that the door may be released by operating the actuating member.
  • a plurality of actuating mechanisms for releasing a door catch of a lift cage have been proposed, among other things there exist actuating mechanisms including a cam wheel, which is engaged with a stationary cam provided at a landing. The door catch of the lift cage may then be released by the actuating mechanism provided at the lift cage.
  • E.g. the GB-A-1 047 977 discloses an actuating mechanism of this kind. It comprises four bell cranks, two articulated levers, one link having one forked end, two links being forked in each end, one bevel gear unit and a plurality of springs.
  • the system is very complicated, and furthermore it requires a careful assembly for bringing the components into their exactly correct positions, so that they will be able to cooperate in a satisfactory manner.
  • the US-A-3 659 677 discloses an other type of mechanism.
  • the actuating mechanism of this structure comprises a handle, which is rotated to release a gate lock for the cage of a hoist. Such rotation of the handle is possible only when a cam wheel engages a ramp, provided at each landing of the hoist. Otherwise the rotational movement of the handle is prevented by a stop.
  • this system is less complicated than the above system, it comprises a plurality of particularly designed components, as well, e. g. including welded lugs, extensions and spring guides. This results in the structure being complex and expensive to manufacture.
  • the US-A-3 721 319 exemplifies a further actuating mechanism, also having a rotatable handle, by means of which the catch of a lift door may be released.
  • the system has a plurality of specially designed members, requiring a rather accurate manufacturing and assembly, making also this system comparatively expensive.
  • the object of the invention is to provide an actuating mechanism of the kind described in the introductory part, which avoids the disadvantages of the prior art, and which has a rugged and uncomplicated construction, permitting it to be manufactured at an essentially lower cost than has been possible in the past, at the same time as a high reliability is maintained even after a long time of use.
  • the actuating mechanism 1 of figs. 1 and 2 is intended for operating a catch 3 of a sliding door 4 of a hoist. Since the design of the door is quite unimportant for the invention per se, a closer description of the door will not be given herein.
  • the catch 3 is provided at the top of the door opening, and extends above and along the door opening. It includes a knee lever 10, one arm 12 of which having a bore for a pivot 6, which is rigidly connected to the upper part of the door opening.
  • the catch 3 is rotatable about the pivot 6 axis in the direction of the arrow P, said axis being parallell to the door 4.
  • a vertical stop lug 8 is joined to the other arm (opposite to the pivot) of the knee lever 10 and protrudes into the path of movement of the door, closely behind the closed door 4 (or behind a stop member associated with the door). Furthermore, the catch 3 comprises a horizontal actuating surface 48 to be engaged by the actuating mechanism 1, which will be described more closely below. If the catch is rotated a sufficient angle about the pivot 6, the stop lug 8 will be displaced out of the path of movement of the door 4, permitting the door to be opened.
  • the actuating mechanism 1 of the invention comprises a manual operating means of any appropriate type, not shown.
  • an operating link 16 When the operating means is operated, an operating link 16 is linearly moved upwardly in the vertical direction (arrow L).
  • the upper end of the operating link 16 has a yoke 18 provided with a through bore.
  • the operating link 16 is guided in suitable guides 22, rigidly connected to the door 4, one of which being shown in the figures.
  • a radial pin 24, rigidly connected to the link 16 protrudes radially therefrom.
  • a return spring 26 is disposed about the link 16 between the radial pin 24 and the guide 22. The distance between the guide 22 and the pin 24 and the length and the characteristic of the spring are adapted to each other, so that the link 16 (and thereby the actuating mechanism 1) is biased by an appropriate return force.
  • the lower end, having a through bore, of a first link arm 28 is inserted into the yoke 18 of the operating link 16, a pivot 20 extending through the bore of the yoke 18 and through the bore provided in the lower end 30 of the link arm 28.
  • said link arm 28 is rotatable about the pivot 20 in relation to the link 16.
  • the upper end of the first link arm 28 is forked, as well, and has a through bore for a pivot 34.
  • the gap between the fork arms of the first link arm 28 is somewhat larger than the width of a cam wheel 36 to be placed in the space between the fork arms.
  • the distance from the pivot axis of the bore to the bottom of the fork is larger than the radius of the cam wheel 36.
  • a second link arm 38 comprises a lower yoke 40, in which the gap between the fork arms is somewhat larger than the width of the yoke 32 of the first link arm 28.
  • This yoke 40 and the cam wheel 36 have each a through bore for the pivot 34.
  • the yoke 40 of the second link arm 38 surrounds the yoke 32 of the first link arm 28, when assembled and by means of the pivot 34, which is introduced into the bores of the respective yokes 32, 34 and the cam wheel 36, the second link arm 38 may be pivoted about the pivot 34 in relation to the first link arm 28.
  • the cam wheel 36 is rotatable on said pivot 34 and has such a radius that it protrudes outside the assembled yokes 32, 40 (fig 1).
  • the upper end of the link arm 38 is flat and has a through bore for a pivot 42.
  • the upper end of the link arm 38 is received in a yoke 44 of an actuating arm 46, which is linearly displaceable in the vertical direction (direction of arrow F), the second link arm 38 being pivotable about the pivot 42 in relation to the actuating arm 46.
  • the arm 46 which at the upper end has a contact surface 48 engageable with the actuating surface 14 of the catch 3 for rotating the same, there are two guides 50 and 52 disposed above each other. Thereby the actuating arm 46 is movable in the vertical direction, only. Additionally, a stop member 54 is provided on the actuating arm 46, the abutment of which against the upper surface of the upper guide 52 limiting the downwards movement of the actuating arm 46.
  • the link arms 28 and 38 are disposed to make an angle with each other in such a way that the pivot 34 will be located outside the connection line between the pivots 20 and 42 at a larger distance from the hoist door 4 towards the hoist cage than that of the pivots 20 and 42.
  • the link arms 28, 38 and the pivots form a toggle joint mechanism.
  • a cam 56 shown with broken lines in fig 1, is provided on the cage in such a manner that when the cage is at a landing or a stop level, the cam 56 will be opposite the cam wheel 36 in question.
  • the device operates as follows:
  • At least one sensor is provided to sense whether the catch 3 is in its blocking position or not. The sensor thereby interrupts the power supply to the driving motor of the hoist to prevent the actuation thereof, if the door is not correctly closed.
  • the described embodiment is related to horizontally displaceable doors provided at landings.
  • the actuating mechanism of the invention is applicable to side hung single or double doors, and to vertically displaceable doors, as well.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Elevator Door Apparatuses (AREA)
  • Lock And Its Accessories (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)

Claims (6)

  1. Mécanisme d'actionnement pour un arrêt (3) de porte d'une cabine d'ascenseur ou de palier, comportant un organe de manoeuvre (16) pouvant être déplacé manuellement, un organe d'actionnement (46) susceptible de se déplacer verticalement relié audit organe de manoeuvre (16) au moyen d'un mécanisme de couplage (20,28,34,38,42), et disposé pour libérer ledit arrêt, permettant ainsi à la porte (4) d'être ouverte, lorsqu'une cabine ascenseur est au palier, ledit mécanisme de couplage comprenant un galet de came (36) qui est susceptible de porter contre une came (56), qui est normalement espacée transversalement par rapport à la direction verticale et qui est dégagée du galet de came (36), par déplacement de l'organe de manoeuvre dans une direction de libération, lorsque la cage d'ascenseur est à un palier, la came (56) et le galet (36) étant alors situés en face l'un de l'autre, amenant ainsi le galet de came (36) en engagement avec la came (56) et bloquant le mécanisme de couplage en conséquence, de telle façon que tout mouvement ultérieur dans la direction de libération de l'organe de manoeuvre (16) sera transféré à l'organe d'actionnement par l'intermédiaire du mécanisme de couplage bloqué, tandis qu'aucun mouvement de l'organe de manoeuvre (16) ne sera transféré à l'organe d'actionnement (46), lorsque le galet de came (36) n'est pas en engagement avec la came (56), caractérisé en ce que l'organe de manoeuvre (16) et l'organe d'actionnement sont généralement alignés verticalement et reliés l'un à l'autre par un mécanisme de joint à genouillère (20,28,34,38,42), comprenant un premier bras de liaison (28), qui est relié à l'une de ses extrémités par un premier pivot (20) audit organe de manoeuvre (16) et qui, à son autre extrémité, est relié par un second pivot (34) à une première extrémité d'un second bras de liaison (38), dont l'autre extrémité est reliée de façon pivotante audit organe d'actionnement (46) par l'intermédiaire d'un troisième pivot (42) et en ce que le galet de came (36) est situé à l'endroit du second pivot (34).
  2. Mécanisme d'actionnement selon la revendication 1, caractérisé en ce que ledit galet de came est une roue à came (36), supportée en rotation par ledit second pivot (34), qui relie ledit premier bras de liaison (28) et ledit second bras de liaison (38) l'un à l'autre, ledit galet de came (36) s'étendant à l'extérieur desdits bras de liaison (28,38) à proximité dudit pivot (34).
  3. Mécanisme d'actionnement selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que ledit mécanisme de joint à genouillière forme un angle en direction de ladite came (56) de telle façon que ledit galet de came (36) est l'élément qui est le plus proche de ladite came (56).
  4. Mécanisme d'actionnement selon l'une quelconque des revendications 1 à 3, caractérisé en ce que au moins l'une des liaisons de pivot entre ledit organe de manoeuvre (16) et ledit premier bras de liaison (28) est entre ledit organe d'actionnement (46) et ledit second bras de liaison (38) est une broche (18,44), prévue sur l'un des organes de liaison et qui entoure une extrémité de l'autre organe de liaison, un pivot (20,42) étant introduit à travers lesdits deux organes de liaison coopérants (18,28 ; 38,44).
  5. Mécanisme d'actionnement selon la revendication 2, caractérisé en ce que la liaison entre ledit premier bras de liaison (28) et ledit second bras de liaison (38) est formée par une broche (40) prévue sur l'un desdits bras de liaison (38), qui entoure une broche plus mince (32) prévue sur l'autre desdits bras de liaison (28), ladite roue de came étant entourée par ladite broche plus mince (32) et pouvant tourner sur un pivot (34) qui s'étend à travers lesdites broches (32,36).
  6. Mécanisme d'actionnement selon l'une quelconque des revendications 1 à 5, caractérisé en ce que ladite came (56) est associée à une cabine d'ascenseur et ledit galet de came (36) est disposé au niveau d'un palier.
EP95942344A 1994-12-28 1995-12-19 Mecanisme de manoeuvre du verrou d'une porte d'ascenseur Expired - Lifetime EP0805775B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9404546 1994-12-28
SE9404546A SE511787C2 (sv) 1994-12-28 1994-12-28 Manövermekanism för hissdörrspärr
PCT/SE1995/001544 WO1996020126A1 (fr) 1994-12-28 1995-12-19 Mecanisme de man×uvre du verrou d'une porte d'ascenseur

Publications (2)

Publication Number Publication Date
EP0805775A1 EP0805775A1 (fr) 1997-11-12
EP0805775B1 true EP0805775B1 (fr) 2000-07-12

Family

ID=20396503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95942344A Expired - Lifetime EP0805775B1 (fr) 1994-12-28 1995-12-19 Mecanisme de manoeuvre du verrou d'une porte d'ascenseur

Country Status (5)

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EP (1) EP0805775B1 (fr)
AU (1) AU689361B2 (fr)
DE (1) DE69518013T2 (fr)
SE (1) SE511787C2 (fr)
WO (1) WO1996020126A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108584638A (zh) * 2018-05-14 2018-09-28 南通中尧特雷卡电梯产品有限公司 一种门机左慢门滑板组件

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1188752A (en) * 1915-03-31 1916-06-27 Quinto Gavazzi Mine-gate lock.
US1352304A (en) * 1919-05-06 1920-09-07 Ernst E L Montelius Door-lock
GB1213689A (en) * 1968-12-09 1970-11-25 Ace Machinery Ltd Improvements in and relating to cage gate lock mechanisms
US3721319A (en) * 1971-11-15 1973-03-20 Ace Machinery Ltd Hoists

Also Published As

Publication number Publication date
AU689361B2 (en) 1998-03-26
SE511787C2 (sv) 1999-11-22
SE9404546L (sv) 1996-06-29
AU4359496A (en) 1996-07-19
WO1996020126A1 (fr) 1996-07-04
EP0805775A1 (fr) 1997-11-12
SE9404546D0 (sv) 1994-12-28
DE69518013D1 (de) 2000-08-17
DE69518013T2 (de) 2001-03-22

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