Provided is an elevator door engagement device including a first member and a second member extending in a vertical direction; at least one of a first link member and a second link member, the first link member constituting together with the first member a parallel link mechanism, the second link member constituting together with the second member a parallel link mechanism; a first roller arranged in the first member; and a second roller arranged in the second member.

Provided is an elevator door engagement device including a first member and a second member extending in a vertical direction; at least one of a first link member and a second link member, the first link member constituting together with the first member a parallel link mechanism, the second link member constituting together with the second member a parallel link mechanism; a first roller arranged in the first member; and a second roller arranged in the second member.

A device for unlocking a landing door includes a door leaf that can be moved between an open position and a closed position, a bar arranged on the door leaf to lock the door leaf in the closed position, and an energy accumulator coupled to the door leaf to provide the energy for moving the door leaf into the closed position in the event that the energy supply needed to drive the door leaf fails. The energy accumulator is coupled to the door leaf by an elastic element such that through a displacement of the energy accumulator when the door leaf is in the closed position, the bar is moved to an unlocked position.

A device for unlocking a landing door includes a door leaf that can be moved between an open position and a closed position, a bar arranged on the door leaf to lock the door leaf in the closed position, and an energy accumulator coupled to the door leaf to provide the energy for moving the door leaf into the closed position in the event that the energy supply needed to drive the door leaf fails. The energy accumulator is coupled to the door leaf by an elastic element such that through a displacement of the energy accumulator when the door leaf is in the closed position, the bar is moved to an unlocked position.

An illustrative example method of positioning an elevator door interlock includes positioning an elevator car in a hoistway near the hoistway door so that at an elevator door coupler is aligned with the interlock, opening a door of the elevator car and the hoistway door, accessing an adjustment mechanism supporting the interlock from outside of the hoistway, and using the adjustment mechanism to adjust a position of the interlock relative to the hoistway door from outside the hoistway.

An illustrative example method of positioning an elevator door interlock includes positioning an elevator car in a hoistway near the hoistway door so that at an elevator door coupler is aligned with the interlock, opening a door of the elevator car and the hoistway door, accessing an adjustment mechanism supporting the interlock from outside of the hoistway, and using the adjustment mechanism to adjust a position of the interlock relative to the hoistway door from outside the hoistway.

An illustrative example embodiment of an elevator system includes an elevator car situated for movement among a plurality of landings. The elevator car includes a car door and a door mover. A door interlock associated with a landing door at each of the landings is configured to couple the associated landing door with the car door. The door interlocks respectively include a lock switch. A controller is configured to: cause the elevator car to move to at least one of the landings; when the elevator car is at the at least one landing, cause the door mover to instigate movement of the door interlock sufficient to at least temporarily change a position of the lock switch; and locate a malfunctioning one of the lock switches at one of the landings based on the movement of the door interlock.

An illustrative example embodiment of an elevator system includes an elevator car situated for movement among a plurality of landings. The elevator car includes a car door and a door mover. A door interlock associated with a landing door at each of the landings is configured to couple the associated landing door with the car door. The door interlocks respectively include a lock switch. A controller is configured to: cause the elevator car to move to at least one of the landings; when the elevator car is at the at least one landing, cause the door mover to instigate movement of the door interlock sufficient to at least temporarily change a position of the lock switch; and locate a malfunctioning one of the lock switches at one of the landings based on the movement of the door interlock.

Provided is a door engagement device including: a first member that extends in a vertical direction and is able to come into contact with an engaged part from a door closing direction side; a second member that extends in the vertical direction at a position with a distance from the first member to a door opening side and is able to come into contact with the engaged part from a door opening direction side; a pair of link members that form a parallel link mechanism in cooperation with the first member so as to enable the first member to pivotally move between a predetermined first position and a predetermined second position located closer to the door closing direction side than the first position while keeping the posture of the first member; and a restricting part that releasably restricts the pivotal movement of the first member at the first position.

Provided is a door engagement device including: a first member that extends in a vertical direction and is able to come into contact with an engaged part from a door closing direction side; a second member that extends in the vertical direction at a position with a distance from the first member to a door opening side and is able to come into contact with the engaged part from a door opening direction side; a pair of link members that form a parallel link mechanism in cooperation with the first member so as to enable the first member to pivotally move between a predetermined first position and a predetermined second position located closer to the door closing direction side than the first position while keeping the posture of the first member; and a restricting part that releasably restricts the pivotal movement of the first member at the first position.