JPS6139737Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a device for stopping operation of an elevator.

When a manager wants to stop an elevator at night, he operates a return switch located at a specific location. By this operation, the hall calls for each floor that have been registered up to that point are canceled and further registration of hall calls becomes impossible. On the other hand, car calls registered within the car are retained as they are. In this way, the car responds only to car calls while
(floor). If there is no call for the car, the elevator power is cut off after a certain period of time and the car becomes inactive. In this way, the reason why only the car call is kept is to give preferential service to the passengers in the car, and also because when the car returns to the designated floor, the car manager may leave the designated floor without confirming it. This is because passengers may be trapped in the car (they can register for car calls, so they can go to other floors).

However, when the car returns to the designated floor, it is expected that the caretaker will not confirm that the car is unoccupied as mentioned above, so it is likely that someone planning a crime is hiding inside the car. Then, there is a risk that the car may be registered, the car can be freely driven, and the car may be entered into the building and committed a crime. In addition, if the contacts of the destination button remain in contact due to malfunction of its mechanical parts, the car will repeatedly drive back and forth between the designated return floor and the floor indicated by the destination button. Become.

This invention is intended to improve the above-mentioned problems, and aims to provide an elevator operation stop device that prevents the car from being operated unnecessarily due to a car call after the car returns home.

An embodiment of this invention will be described below with reference to FIGS. 1 to 3.

In the diagram, (+) and (-) are DC power supplies, 1A to 4A are destination buttons for the 1st to 4th floors provided inside the car, and 1B to 4B are car call registration relays for the 1st to 4th floors, respectively. , 1Ba to 4Ba are normally open contacts, 1C to 4C are car position contacts that open when the car is on the 1st to 4th floors, 1C1 is a car position contact that is closed when the car is on the 1st floor, and 1C2 is a car position contact that is closed when the car is on the 1st floor. Car position contact that opens when the car is on the first floor, 5
is a return switch, 6 is a return command relay, 6a,
6b is its normally open contact, 6c is its normally closed contact, and 7
A door open detection relay contact that closes when the door of the basket opens. 8 is a time relay that operates after a certain period of time when energized and returns immediately when de-energized. 8a is its normally open contact, and 8b is the same. Normally closed contact, contact 1C
1, 7, 8a, 6a and the time relay 8 constitute a period detection circuit, and the contact 8b constitutes a car call registration blocking circuit. Reference numeral 9 represents a hall call registration circuit that registers a hall call from a hall button (not shown) on each floor, and 10 represents a call-back circuit that returns the car to a designated floor (in this case, the first floor) if there is an input.

Next, the operation of this embodiment will be explained.

Assume that the basket is currently on the fourth floor and is waiting for the door to open. When the second floor destination button 2A is pressed in the car, the second floor car call registration relay 2B is energized by the (+)-8b-2A-2C-2B-(-) circuit, and the contact 2Ba is closed. Self-preservation through formation. The call for the car on the second floor is now registered, and the car closes its door and starts running. At this time, it is assumed that the manager closes the return switch 5 for the purpose of suspending the car. The return command relay 6 is energized, and the contacts 6a, 6
b is closed, and contact 6c is opened. By opening the contact point 6c, the hall call registration circuit 9 is connected to the power supply (+),
Since it is removed from (-), all hall calls registered up to that point are canceled and subsequent registration of hall calls is blocked. On the other hand, by closing the contact point 6b, the call-back circuit 10 is activated, and the car runs toward the first floor. When the car approaches the second floor, a stop circuit (not shown) is activated and the car stops at the second floor. At the same time, car position contact 2C is opened, so car call registration relay 2B is deenergized, and contact 2
Ba is open. The car call on the second floor is now cancelled. When the car further descends and reaches the first floor, the car position contact 1C2 is opened and the call back circuit 10 becomes inactive. Further, the car position contact 1C1 is closed. When the car stops on the first floor and the door opens, door open detection relay contact 7 closes and (+)-1C1-7-6a
The time relay 8 is energized by the circuit -8-(-), and after a certain period of time, the contact 8a is closed and self-maintained. This certain period of time is set to be a sufficient period of time for the car to move between floors on the first floor. Furthermore, since the contact point 8b is opened, even if other car calls are registered, they are canceled and subsequent registration of car calls becomes impossible. Therefore, even if someone planning to commit a crime is in the car, the crime is prevented because the car cannot be used freely. In addition, any of the destination buttons 1A to 4a
Even if the contacts come into contact due to malfunction, a car call will not be registered and no wasteful operation will occur.

When the manager opens the return switch 5, the return command relay 6 is deenergized and the contact 6a is opened, so the time relay 8 is deenergized and the contact 8b is closed. Further, since the contact point 6c is closed, the hall call registration circuit 9 is connected to the power supplies (+) and (-). This returns the vehicle to a state in which normal operation is possible.

In the embodiment, the car call registration is disabled after a certain period of time has passed after the car returns to the first floor. may be made impossible. In this case, the fixed time is
The time is set to be enough for the car to make one round trip between the bottom floor and the top floor.

In addition, a counter is installed to detect when the car has passed a specific floor, and if the car passes the specific floor twice or more after the return switch 5 is closed (10 minutes).
It may be possible to disable the registration of car calls.

As explained above, in this invention, even if the return switch is operated, a car call can be registered, the car returns to the designated floor, and if there is no car call after a specified time, the car stops operating. After a predetermined period of time elapses after a car returns to a designated floor, it is no longer possible to register a car call, so when the return switch is operated, there is no possibility that someone planning to commit a crime will board the car. However, you cannot drive a car,
It is possible to prevent that person from entering the building.

Furthermore, even if the destination button is malfunctioning and the contacts are in contact, the operation can be reliably shut down. Furthermore, it is possible to prevent passengers from being trapped inside the car when the car goes out of operation.

[Brief explanation of the drawing]

FIGS. 1 to 3 are circuit diagrams showing an embodiment of an elevator suspension device according to this invention. 1A to 4A...Destination buttons for 1st to 4th floors, 1B
~4B...Same left car call registration relay, 1C1,1
C2...Car position contact on designated floor (1st floor), 5...
Return switch, 6... Return command relay, 8... Time-limited operation time-limited relay, 9... Hall call registration circuit, 1
0...Recall circuit.

Claims (1)

[Scope of claim for utility model registration] (1) When the return switch is operated, registration of landing calls is disabled, car calls are allowed to be registered, and the car is returned to the designated floor, and if there is no car call after the specified time, the above A period detection circuit that operates when a predetermined period of time elapses after the return switch is operated in a system that stops the operation of the car, and when this period detection circuit operates, it becomes impossible to register the above car call. An elevator operation stop device characterized by comprising a car call registration prevention circuit. (2) The elevator operation stop device according to claim 1, wherein the period detection circuit operates when a certain period of time has elapsed after the car returned to the designated floor. (3) The elevator operation stop device according to claim 1, wherein the period detection circuit operates when a certain period of time has elapsed since the return switch was operated. (4) The elevator operation stop device according to claim 1, wherein the period detection circuit is activated when the car passes a specific floor a predetermined number of times or more after the return switch is operated.