JPS6347281A - Display unit for elevator - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an elevator display device, and more particularly to a display device for displaying floors at which an elevator stops during a power outage.

[Conventional technology]

If an accident occurs in which an elevator stops due to a power outage and a passenger is trapped in the elevator car, the passenger must be rescued as soon as possible.

Therefore, when carrying out rescue work, it is first necessary to confirm the stopping position of the elevator car.

Traditionally, in rescue work, the building manager or the elevator
Maintenance personnel could not confirm the stopping position of the elevator in front of the elevator hall.

Therefore, rescue workers had to open the hall doors of each floor of the elevator using a special key, peer into the elevator hoistway, and confirm the stopping position of the elevator. However, in this case, it took an hour and there was a risk of falling into the hoistway. Also.

In elevator models in which a floor selector is installed in the machine room, it is possible to go up the stairs to the first machine room and check the stopping position of the car, but there is a problem in that it takes time and effort.

[Problem that the invention seeks to solve]

The present invention has been made in view of the problems of the conventional technology, and its purpose is to make it possible to easily and safely confirm the stopping position when an elevator stops due to a power outage, thereby facilitating rescue operations. An object of the present invention is to provide an elevator display device that increases the speed and safety of elevators and increases the sense of security for elevator passengers.

[Means for solving problems]

The present invention is characterized in that when a power outage occurs, by operating a switch provided in the hall, the floor at which the boarding station stops is displayed on an indicator in the hall.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, the service floors are five floors from the first floor to the fifth floor.

FIG. 1 is a conceptual diagram of an elevator display device according to the present invention, in which an elevator car 1 is suspended by a main rope 2, and a counterweight 4 is suspended from the other end of the main rope 2 for balance. It's a shame. This main rope 2 is driven in the vertical direction by a hoisting machine 3 installed in a machine room above the hoistway, and services are provided so that the seats 1 land on the floor 5 of each floor. In addition, in the elevator hall on each floor,
A lamp 7 indicating the floor position of the next car and an indicator 6 equipped with a hall call button are installed.

2 to 5 are circuit diagrams of an embodiment of the present invention.

Figure 2 shows a circuit that lights up lamps indicating floor positions, and eo indicates lamps Ll to L5 that indicate floors 1 to 5 when purchasing electricity.
DCI is a power source for lighting lamps L1 to L5 during a power outage @ B a
+B b is a relay contact for switching between these two power sources. Kla~5a is a relay contact that closes when the lamp Lz''La is turned on.

Figure 3 shows relays 1 to 5 for lighting the lamp.
This circuit is designed to maintain the floor signal even during a power outage. F1 to F5 are contacts that respectively close in synchronization with the positions of the first to fifth floors of the passenger corner. K1-5 is a relay coil for lighting the lamps L1 to L5, and is generally called a keep relay.

Once the coil is in the on state, the on state is maintained even if no current is passed through the coil.

To K1-! The keep relay of I has a set coil S and a reset coil R, and by passing current through each coil, it can be switched to the on state and off state, and when no current is passed through the coil, the previous state is returned. is maintained, so floor signals can be maintained even during power outages. The diode D is used to, when a current flows through the set coil S of the keep relay on a certain floor and turn it on, cause a current to flow through the reset coils R of the keep relays on both sides of it, turning it off.

FIG. 4 shows a circuit for detecting a power outage, in which el is a three-phase AC power source for an elevator, 9 is a power breaker, and A is a relay that is turned off at the time of a power outage.

Figure 5 shows a circuit that detects when the hall call button is pressed.When purchasing electricity, the hall call button 8 is used to register a call to board the elevator, and when the hall call button is pressed, Relay HL is turned on. If there is a power outage here, hall call button 8 will be pressed.

It is used as a switch to display the elevator stop floor position on the hall indicator, and when the hall call button 8 is pressed, the power from the battery DC2 is used.
Power switching relay B is turned on through contact Ab of the relay, which is turned off during a power outage.

Now, let's consider a case where an elevator is running carrying passengers in a power purchasing state. At this point, the lamp 7 of the indicator 6 in FIG. 1 indicates the floor position of the car,
Hall call button 8 is used to call passengers.

Furthermore, since the power supply detection relay A in FIG. 4 is in the on state, the power supply switching relay B remains in the on state even if the hall call button 8 in FIG. 5 is pressed. Now, if the car is running near the third floor, only the contact F3 of the third floor relay in Figure 3 is closed, so the keep relay for holding the first floor signal is closed. 3 is on, and the other keep relays are off. Therefore, in FIG. 2, only the lamp L3 on the third floor is lit by the power source eo.

Now, consider a case where a power outage occurs and the elevator stops. At this point, the car 1 in FIG. 1 has stopped near the third floor, and the lamp 7 of the indicator 6 is off. Further, although the relay 7 in FIG. 4 is in the off state, the fifth @ relay B remains in the off state unless the hall call button 8 is pressed. Furthermore, all the contacts F1 to F5 of the floor relay in Fig. 3 are in an open state, and the power supply P-
N has also disappeared, but the keep relay for holding floor signals maintains the state before the power outage, so only N3 for the third floor remains on.

Therefore, although the contact Ksa for lighting the floor lamp in FIG. 2 is closed, the lamp L3 is in an extinguished state because the power source ea has disappeared.

Here, if the building manager or elevator maintenance worker presses the hall call button 8 on the - floor in order to know the stopping position of the elevator, the hall call button 8 in Fig. 5 will close. , the power supply switching relay B is turned on, and as shown in FIG. A current flows to turn on the lamp L8.

Therefore, in the event of a power outage, by pressing the hall call button 8 installed in the hall shown in FIG. 1, the floor where the car is stopped will be displayed on the hall indicator 6.

For models that have a floor selector, it is also possible to replace the part in FIG. 3 with a floor position display signal.

In addition, the operation switch provided in the hall does not have to be the hall call button on the − floor, but can be placed on any floor designated by the manager.
Alternatively, a parking switch may be operated to stop the elevator.

Further, in this embodiment, the circuit configuration is based on a relay sequence, but a configuration using a transistor or an IC, or a microcomputer may also be used.

〔Effect of the invention〕

According to the present invention, when a passenger is trapped inside a passenger car due to a power outage, rescue work can be carried out quickly and safely.

[Brief explanation of drawings]

FIG. 1 is a conceptual diagram of an elevator display device of the present invention, and FIGS. 2 to 5 are circuit diagrams of an embodiment of the present invention. 1... Car, 6... Indicator, 7... Floor indicator lamp, 8... Hall call button, 9... Power breaker.

Claims (1)

[Scope of Claims] 1. In an elevator that serves multiple floors, a circuit that lights up a floor indicator lamp in synchronization with the running position of the elevator and operation of a hall call button enable battery power to be used only in the event of a power outage. A display device for an elevator, comprising: a relay that is energized; and a circuit that switches the power source of the floor indicator lamp from purchased electricity to the battery power source by energizing the relay.