The present invention provides a maintenance safety apparatus for an elevator system and a method for operating the same, and belongs to the technical field of elevators. The maintenance safety apparatus of the present invention comprises a safety switch, a door lock device, a linkage control assembly and a linkage locking assembly. The maintenance safety apparatus of the present invention is very simple to operate and is capable of ensuring the safety of the staff entering a hoistway for performing maintenance operations.

Provided is an elevator door device including: a rail that is disposed above an entrance; an opening and closing part of the entrance; and a locking mechanism that locks the opening and closing part. The locking mechanism includes: an engaging part including an engaging body that changes its position between a releasing position and an engaging position in association with the opening and closing of the opening and closing part; and an engaged part including an engaged body engaged with the engaging body at the engaging position. The engaged part is disposed in an area between the rail and the entrance, and overlaps with the rail as seen in plan view in the area. The opening and closing part has such a shape as to be able to open and close without abutting on the engaged part.

Provided is an elevator door device including: a rail that is disposed above an entrance; an opening and closing part of the entrance; and a locking mechanism that locks the opening and closing part. The locking mechanism includes: an engaging part including an engaging body that changes its position between a releasing position and an engaging position in association with the opening and closing of the opening and closing part; and an engaged part including an engaged body engaged with the engaging body at the engaging position. The engaged part is disposed in an area between the rail and the entrance, and overlaps with the rail as seen in plan view in the area. The opening and closing part has such a shape as to be able to open and close without abutting on the engaged part.

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.

Elevator systems are provided. The elevator systems include an elevator car movable along an elevator shaft having a pit floor and a shaft top, the elevator car having a car door lock arranged to enable opening of doors by a landing door lock mechanism when the elevator car is located at a landing and an elevator safety system. The elevator safety system includes a car door lock securing device arranged to prevent manual opening of the elevator car doors when in a first state and permits opening of the elevator car doors when in a second state and a car apron affixed to the car door sill and operable from a stowed state to a deployed state, wherein when the car apron transitions from the stowed state to the deployed state, the car door lock securing device is transitioned from the first state to the second state.

The disclosure provides for a locking system for an elevator car door that includes a locking apparatus mounted to the elevator car door. The locking apparatus includes an elevator door latch arm, a sensing vane, and a fixed vane. The elevator door latch arm has one end configured to be inserted into a catch to lock the elevator car door. The sensing and fixed vanes are generally parallel to one another. When the elevator car door is aligned with a hoistway door, an outer surface of the sensing vane is configured to engage with a roller on the hoistway door, and an outer surface of the fixed vane is configured to engage with another roller on the hoistway door. When both the first and second rollers are engaged by the sensing and fixed vanes, the locking apparatus is configured to remove the elevator door latch arm from the catch.

The disclosure provides for a locking system for an elevator car door that includes a locking apparatus mounted to the elevator car door. The locking apparatus includes an elevator door latch arm, a sensing vane, and a fixed vane. The elevator door latch arm has one end configured to be inserted into a catch to lock the elevator car door. The sensing and fixed vanes are generally parallel to one another. When the elevator car door is aligned with a hoistway door, an outer surface of the sensing vane is configured to engage with a roller on the hoistway door, and an outer surface of the fixed vane is configured to engage with another roller on the hoistway door. When both the first and second rollers are engaged by the sensing and fixed vanes, the locking apparatus is configured to remove the elevator door latch arm from the catch.

A mechanical hoistway access control device for an elevator landing door includes a first blocking member mounted on a position on a landing door frame above a landing door, and a second blocking member mounted on a position on a car door frame above a car door. The first blocking member is pivotably attached between an upright position and a first horizontal position extending in the door opening direction about a horizontal shaft. The second blocking member is pivotably attached between an upright position and a second horizontal position about a horizontal shaft, the second horizontal position being where the second blocking member protrudes out to the landing door side to block movement of the first blocking member.

A mechanical hoistway access control device for an elevator landing door includes a first blocking member mounted on a position on a landing door frame above a landing door, and a second blocking member mounted on a position on a car door frame above a car door. The first blocking member is pivotably attached between an upright position and a first horizontal position extending in the door opening direction about a horizontal shaft. The second blocking member is pivotably attached between an upright position and a second horizontal position about a horizontal shaft, the second horizontal position being where the second blocking member protrudes out to the landing door side to block movement of the first blocking member.

An improved home lift having a simplified design and utilizing components that is simple and economical to install and designed for economical, temporary rental or lease installations as well as permanent installations. Complete installations cost far less than any existing home lift of the prior art and most stair climbers. The components include an optional steel tower frame or a support post and beam assembly, a carriage designed to carry a passenger with or without a wheelchair, a counterweight, and a set of pulleys configured to guide two cables. Both cables are attached to the carriage and the counterweight. The load weight and the counterweight are equal and balanced, requiring so little-force that the home lift may easily be operated manually by the passenger or an aide.