(19)
(11) EP 0 506 155 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
19.05.1993 Bulletin 1993/20

(43) Date of publication A2:
30.09.1992 Bulletin 1992/40

(21) Application number: 92200451.0

(22) Date of filing: 18.02.1992
(51) International Patent Classification (IPC)5: B66B 13/24, B66B 13/16
(84) Designated Contracting States:
AT ES FR IT

(30) Priority: 25.03.1991 BR 9101160

(71) Applicant: OTIS ELEVATOR COMPANY
Farmington, CT 06032 (US)

(72) Inventors:
  • Caldeira, Eduardo Magalhaes
    Bairro Suico, S.B. do Campo - SP (BR)
  • Martinez, Severo Fernandez
    Santo Andre - SP (BR)

(74) Representative: Ungria Lopez, Javier et al
Avda. Ramon y Cajal, 78
E-28043 Madrid
E-28043 Madrid (ES)


(56) References cited: : 
   
       


    (54) Safety blocking system for an elevator swinging door


    (57) The patent deals with a safety system for blocking an elevator swinging door, to guarantee the closing and/or blocking of the door, made up of a blocking assembly mounted on the doorframe (4) this blocking assembly including a closure ratchet (8) which can be moved on the doorframe (4) between blocked and unblocked positions; an activator (10) of closer ratchet (8) mounted on the doorframe (4) and connected in operation to the closer ratchet (8) in that a rotation of this activator (10) of closer ratchet (8) results in the movement of the closer ratchet (8) between the mentioned blocked and unblocked positions; a key guide (12) covering activator (10) of the closer ratchet and including an opening (14) in the closer ratchet for access to activator (10) of closer ratchet; and an emergency key (22) having a nozzle (28) to come into contact with the activator (10) of closer ratchet and to turn the latter through said opening (14) of the key guide (12), it being possible to operate this key guide (12) to prevent the nozzle (28) of the key and activator (10) of closer ratchet from being released when this closer ratchet (8) is in the unblocked door position; a mechanism (52) to hold the closer ratchet in the unblocked door position when the floor door is open; and a trigger mechanism (34) to free the holding mechanism when the floor door is closed so that the closer ratchet returns to its door blocked position in order to block the door and the emergency key (22) returns to the initial position in which the nozzle (28) of the key can be disconnected from the ratchet activator (10) and can be removed from the doorframe (4.)






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