EP0506155B1 - Safety blocking system for an elevator swinging door - Google Patents

Safety blocking system for an elevator swinging door Download PDF

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Publication number
EP0506155B1
EP0506155B1 EP92200451A EP92200451A EP0506155B1 EP 0506155 B1 EP0506155 B1 EP 0506155B1 EP 92200451 A EP92200451 A EP 92200451A EP 92200451 A EP92200451 A EP 92200451A EP 0506155 B1 EP0506155 B1 EP 0506155B1
Authority
EP
European Patent Office
Prior art keywords
ratchet
closer
door
key
activator
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
EP92200451A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0506155A2 (en
EP0506155A3 (en
Inventor
Eduardo Magalhaes Caldeira
Severo Fernandez Martinez
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.)
Otis Elevator Co
Original Assignee
Otis Elevator Co
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 Otis Elevator Co filed Critical Otis Elevator Co
Publication of EP0506155A2 publication Critical patent/EP0506155A2/en
Publication of EP0506155A3 publication Critical patent/EP0506155A3/en
Application granted granted Critical
Publication of EP0506155B1 publication Critical patent/EP0506155B1/en
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
    • B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B11/00—Devices preventing keys from being removed from the lock ; Devices preventing falling or pushing out of keys
    • E05B11/02—Devices preventing keys from being removed from the lock ; Devices preventing falling or pushing out of keys before the wing is locked
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor
    • E05B35/008—Locks for use with special keys or a plurality of keys ; keys therefor for simple tool-like keys

Definitions

  • the present invention deals with a safety system for the swinging doors (vertical axis doors which open manually) used on elevator systems floors.
  • the invention mechanically guarantees that it will only be possible to remove the emergency key from the door fastener when it is in the "blocked position.”
  • Elevator floor swinging doors have an electromechanical bolt/fastener usually installed in the frame of the door, which has two related and interdependent functions, which are: to prevent operation of the traction machinery by normal operation devices unless the floor door is in the blocked position; and prevent the opening of the door on the floor side unless the car is stopped or stopping in the resting zone on that floor.
  • the unblocking of the door can be done in two ways:
  • the closing device In the first way, which is the normal procedure, the closing device is unblocked when the car stops or is stopping at the floor, through a movable ramp located in the car, which pushes a lever connected to the axis that makes the ratchet retract, unblocking the door. This situation continues until the car leaves, which will only happen when the closed floor door electrical contact is activated. The the movable ramp immediately retracts freeing the closing lever which causes the ratchet to return to the "blocked position,” activating the "floor door blocked” electrical contact and the car leaves.
  • the second way which is the object of this invention, only occurs under unusual or emergency circumstances, that is, the door is unblocked on the floor side with a special tool or emergency key.
  • This key is introduced through a hole in the frame of the door and includes a triangular recess which fits on a triangular shaped pin situated in the closer. The recess remains over the key and couples with the closer pin.
  • This triangular pin is connected to a lever that moves the blocking ratchet, unblocking the door lock when the key is turned. The door blocking of the door occurs when a trigger, located in the closer, under the electrical contact, is pushed by a pin attached to the door, thus freeing the ratchet.
  • the closer ratchet has three positions:
  • the emergency key should be used only in exceptional cases, such as: repairs, inspection, maintenance of the elevator system or to recover some object that has fallen into the elevator shaft; and in emergencies, for example a passenger trapped in the car due to the car stopping outside of the floor area. This can happen due to various factors, such as lack of electricity, failure of the controls and other factors.
  • the door can be unblocked with the use of the emergency key by inserting it into the lock located in the doorframe and turning it so that the blocking ratchet is moved until the door is unblocked. Keeping the key in the same position, the door can be opened manually and the key can then be released so the ratchet assumes the first stage position.
  • the door possesses systems that guarantee its automatic closing in such a way that when the door is released, it returns automatically to the "blocked” position and one of the door pins activates the trigger, which frees the closer ratchet, which is in the first stage, to move into the second stage or "blocked" position.
  • the emergency key can only be removed from the doorframe when the closer is in the blocked position. It involves a safety system which requires the key user to close the door until it is blocked in case there should occur some failure in the swinging door's automatic closing system, so that it fails to block.
  • the door closer ratchet is found in the first stage and the invention prevents the removal of the key from the door, so the user will have to manually push the door until it is blocked by the closer ratchet which assumes the second stage or "blocked" position.
  • the invention involves a security system for closing the swinging door, consisting of a device called a guide and an emergency key which remains in the door until the door is closed and blocked.
  • the closer assembly generally denoted by the number 2 and mounted in doorframe 4 includes a box 6 on which the components of the closer are mounted.
  • a closer ratchet 8 is mounted on the box 6 to slide when the latter is coming or going.
  • the activator 10 of the closer ratchet is mounted on box 6 and projects from it.
  • the activator 10 preferably has a triangular transverse cross section.
  • a key guide 12 is mounted on the box 6 covering activator 10. As can be seen in Figures 1 and 2, the key guide 12 has a generally triangular opening 14 through its front face 16 which opens into circular chamber 18. Activator 10 of the ratchet projects into the circular chamber 18, as seen in Figure 5.
  • the emergency key 22 has an arm 24 and a staff 26 which ends in a nozzle 28.
  • Nozzle 28 has a triangular external profile and a triangular recess 30.
  • Nozzle 28 is inserted through the opening in the triangular guide 14 for telescopic action of the activator of the ratchet within recess 30 of the nozzle.
  • the configurations of activator 10 and of recess 30 of the nozzle are complementary so that rotation of the key 22 and nozzle 28 result in rotation of activator 10 which serves to draw back the closer ratchet 8 and open the door.
  • FIGs 6-13 illustrate the manner in which key 22 operates for the purpose of unblocking floor door 32 of the elevator.
  • Nozzle 28 of the key is inserted through opening 20 of the doorframe and within key guide 12.
  • the key is then turned clockwise causing ratchet activator 10 to turn, and thus drawing back closure ratchet 8. This frees the door 32 to be opened.
  • nozzle 28 of the key ends up unaligned with opening 14 of the key guide when key 22 is turned so that door 32 is open.
  • a holding mechanism which will be described in detail below, operates for the purpose of restraining ratchet 8 in its drawn back position so long as the door 32 is open, thus keeping key 22 in its turned position. Key 22 therefore cannot be removed from the key guide 12 if door 32 is open.
  • Ratchet 8 has a cleft that receives the upper part of a lever 36 which itself is mounted to pivot in the interior of box 6.
  • Lever 36 is requested in the counter-clockwise direction by spring 38. In this manner, closer ratchet 8 is drawn in the direction of its extended fastening position.
  • Activator 10 is secured with a cotter to lever 36.
  • a sliding pin 40 projects from lever 36.
  • a spindle 42 is mounted for rotation within box 6.
  • the return cam roller bearing 44 and an arm of lever 46 that detect the presence of the elevator car stopped at the floor are mounted on the spindle 42 and are operable to make spindle 42 turn when the car is going to stop at the floor.
  • Spindle 42 bears a plate 48 that is connected to lever 36 by a rigid wire clamp 50.
  • Latch 52 is mounted on a spring guide 54 to execute a rotation induced by gravity on the spring in a counter-clockwise direction as seen in Figure 15.
  • latch 52 enters into contact with sliding pin 40, as is seen in Figures 14 and 15. This contact keeps latch 52 from pivoting around spring guide 54.
  • Figures 16 and 17 show how the latch 52 operates to hold closer ratchet 8 in its drawn position after being drawn whether by operation of cam roller 44 and the arm of lever 46, or by use of emergency key 22 which turns ratchet activator 10.
  • sliding pin 40 moves up and separating from latch 52 allowing the latch to pivot around spring guide 54 to a position just below sliding pin 40 as represented in Figures 16 and 17.
  • lever 36 and ratchet 8 are secured in their drawn positions in which the floor door can be opened.
  • lever 36 is held in the position shown in Figure 16
  • the activator 10 and key 22 will be held in the position shown in Figure 11.
  • key 22 cannot be removed from the doorframe until lever 36 and ratchet 8 are held in their drawn back positions.
  • floor door 32 In order to free sliding pin 40 from latch 52, floor door 32 must be closed completely.
  • tripper pin 34 moves through opening 35 in doorframe 4 (see Figure 6), enters in contact with latch 52 and pushes the latter clockwise around spring guide 54 back to the position shown in Figures 14 and 15.
  • lever 36 returns to its normal secured position, the configurations of activator 10 and opening 14 of the key guide will be aligned in such a way that key 22 can be removed from doorframe 4.

Landscapes

  • Elevator Door Apparatuses (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
EP92200451A 1991-03-25 1992-02-18 Safety blocking system for an elevator swinging door Expired - Lifetime EP0506155B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR9101160 1991-03-25
BR919101160A BR9101160A (pt) 1991-03-25 1991-03-25 Sistema de seguranca para travamento de uma porta batente de elevador

Publications (3)

Publication Number Publication Date
EP0506155A2 EP0506155A2 (en) 1992-09-30
EP0506155A3 EP0506155A3 (en) 1993-05-19
EP0506155B1 true EP0506155B1 (en) 1995-10-25

Family

ID=4051567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92200451A Expired - Lifetime EP0506155B1 (en) 1991-03-25 1992-02-18 Safety blocking system for an elevator swinging door

Country Status (7)

Country Link
EP (1) EP0506155B1 (tr)
AT (1) ATE129484T1 (tr)
BR (1) BR9101160A (tr)
ES (1) ES2081552T3 (tr)
PT (1) PT100286B (tr)
RU (1) RU2060225C1 (tr)
TR (1) TR27079A (tr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1057504C (zh) * 1996-11-21 2000-10-18 王秋楠 一种对准式开启电梯厢门装置
FR2791081B1 (fr) * 1999-03-19 2005-05-20 Dominique Prudhomme Dispositif d'alarme associe a une cle de deverrouillage de secours d'une serrure et cle correspondante
FR2809441B1 (fr) * 2000-05-26 2002-08-02 Devismes Serrure manoeuvrable a l'aide de poignee de manoeuvre dite a carre de berne
FR2827265B1 (fr) * 2001-07-12 2003-12-12 Tegur Dispositif de verrouillage d'une porte paliere a deverrouillage de secours independant
US6851521B2 (en) * 2001-12-20 2005-02-08 Inventio Ag Emergency unlocking device at shaft doors of elevators
FR2866640B1 (fr) * 2004-02-24 2007-02-23 Jean Yves Deboffles Dispositif pour securiser les ouvrants d'un elevateur pour personnes a mobilite reduite
FR2873669A1 (fr) * 2004-07-27 2006-02-03 Thyssenkrupp Elevator Mfg F Dispositif de verrouillage et de deverrouillage pour portes palieres d'ascenseur
JP4473297B2 (ja) * 2007-09-20 2010-06-02 日立ビアメカニクス株式会社 レーザ直描装置
CN101786569B (zh) * 2010-02-24 2012-08-08 宁波市北仑欣凌电梯配件厂 电梯门锁触点开关
DE202010011397U1 (de) 2010-08-13 2011-11-14 Aloys Wobben Windenergieanlagen-Arbeitsbühne, und Windenergieanlage
CN105668391A (zh) * 2014-11-18 2016-06-15 上海三菱电梯有限公司 电梯层站门安全开启装置
CN106853941B (zh) * 2015-12-09 2018-12-25 上海三菱电梯有限公司 插入触发式层门门锁锁芯装置及电梯层门解锁及警示装置
EP3342743B1 (en) 2016-12-30 2022-11-30 Otis Elevator Company Elevator landing door unlocking system
CN110143512A (zh) * 2019-06-25 2019-08-20 苏州珀威智能科技有限公司 一种电梯手拉门门锁

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1511838A (en) * 1975-09-16 1978-05-24 Bennie Lifts Ltd Landing door locks for lift systems
GB2090626B (en) * 1981-01-07 1984-09-19 Express Lift The Co Ltd Lock release mechanisms
US4483420A (en) * 1982-07-01 1984-11-20 Byrne Francis J Elevator door interlocking apparatus
SU1162722A1 (ru) * 1984-01-02 1985-06-23 Центральное Проектно-Конструкторское Бюро По Лифтам Всесоюзного Производственного Объединения "Союзлифтмаш" Устройство дл аварийного открывани дверей шахты лифта
JPS6331987A (ja) * 1986-07-22 1988-02-10 株式会社日立製作所 エレベ−タ乗場戸の解錠装置

Also Published As

Publication number Publication date
PT100286A (pt) 1994-04-29
ATE129484T1 (de) 1995-11-15
RU2060225C1 (ru) 1996-05-20
ES2081552T3 (es) 1996-03-16
PT100286B (pt) 1999-05-31
EP0506155A2 (en) 1992-09-30
TR27079A (tr) 1994-10-18
EP0506155A3 (en) 1993-05-19
BR9101160A (pt) 1992-11-17

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