SAFETY LOCKING DEVICE FOR A SHAFT DOOR OF AN ELEVATOR AND METHOD FOR OPENING A SHAFT DOOR OF AN ELEVATOR USING A SAFETY LOOKING DEVICE

The present disclosure provides a safety locking device (240, 340, 440, 540, 640, 740) for a shaft door (230, 330, 430, 530, 630, 730) of an elevator and a method for opening a shaft door (230, 330, 430, 530, 630, 730) of an elevator using a safety locking device (240, 340, 440, 540, 640, 740). The safety locking device (240, 340, 440, 540, 640, 740) for a shaft door (230, 330, 430, 530, 630, 730) of an elevator, the safety locking device (240, 340, 440, 540, 640, 740) comprising a shaft door lock (L) having a first stopper (S1) for stopping the shaft door (230, 330, 430, 530, 630, 730) at a first position corresponding to a closed configuration of the shaft door (230, 330, 430, 530, 630, 730), the shaft door lock (L) having a first locked configuration for locking the shaft door (230, 330, 430, 530, 630, 730) at the first position; an emergency release mechanism (R) for manually releasing the shaft door lock (L) from the first locked configuration, thereby allowing the shaft door (230, 330, 430, 530, 630, 730) to move, from the fist position, in an opening direction for opening the shaft door (230, 330, 430, 530, 630, 730), characterized in that the shaft door lock (L) further has a second stopper (S2) for stopping the shaft door (230, 330, 430, 530, 630, 730) at a second position corresponding to a semi-open configuration of the shaft door (230, 330, 430, 530, 630, 730) being between the closed configuration and an open configuration of the shaft door (230, 330, 430, 530, 630, 730), the shaft door lock (L) having a second locked configuration for locking the shaft door (230, 330, 430, 530, 630, 730) at the second position; and in that the shaft door lock (L) further comprises at least one counter-stopper (C1, C2) configured to engage with the first stopper (S1) for stopping the shaft door (230, 330, 430, 530, 630, 730) at the first position and with the second stopper (S2) for stopping the shaft door (230, 330, 430, 530, 630, 730) at the second position. La présente divulgation concerne un dispositif de verrouillage de sécurité (240, 340, 440, 540, 640, 740) d'une porte de cage (230, 330, 430, 530, 630, 730) d'un ascenseur et un procédé d'ouverture d'une porte de cage (230, 330, 430, 530, 630, 730) d'un ascenseur à l'aide d'un dispositif de verrouillage de sécurité (240, 340, 440, 540, 640, 740). L'invention concerne donc un dispositif de verrouillage de sécurité (240, 340, 440, 540, 640, 740) de porte de cage (230, 330, 430, 530, 630, 730) d'un ascenseu