ES336751A1 - Locking mechanism for doors in elevator and similar installations. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Interlocking mechanism for doors in elevator installations and the like, characterized in that the drive of the car takes place by means of a force circuit for the tractor and a maneuver circuit for the series of doors and cams, in which the first of these series ensures the impossibility of starting having an open door, and that the second series, conditioned to the operation of the previous one, ensures the impossibility of starting without a perfect mechanical closure, stopping feeding the force circuit in case opposite, so that the lock in question consists essentially, in its part placed in fixed frame of the door, of two electrical contacts and of a rubbing roller applicable against the skate of the car, whose lever is related to a rotating sector provided with a finger pusher and a spring that tends to place it in the closed position, while in the part placed on the door itself has a latch that exerts the pulsation of one of the aforementioned contacts when the door is closed, and a circular segment, with a spring that tends to place it in the open position, intended to press the remaining contact when activated by said pusher finger, all so that in the closing position the referred finger and segment are interposed between the frame and the door while the electrical contacts are activated that make it impossible to start if they stop working. (Machine-translation by Google Translate, not legally binding)