JPS63267682A - Emergency power unit for elevator - Google Patents

Abstract

(57) [Summary] 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 emergency power supply device for an elevator that drives the elevator during a power outage.

[Conventional technology]

If a power outage occurs in a building where elevators are installed, the elevator may stop between floors, trapping passengers. In order to prevent this, an automatic floor landing device has been proposed that installs an emergency power source for the elevator and uses this emergency power source to automatically drive the elevator to the nearest floor in the event of a power outage. FIG. 2 is a circuit diagram of a conventional elevator emergency power supply device. In the figure, 1 is a commercial power source, 2 is a motor driven by a commercial type g1 to raise and lower an elevator (not shown), and 3 is a control section.The control section 3 performs various controls of the elevator. 4 is an emergency power source for the elevator, and has a capacity sufficient to power the motor 2. 5 indicates various electrical loads, such as lighting, in the building in which the elevator is installed.

When a power outage occurs in the commercial power supply 1, the control unit 3 automatically switches the power supply of the motor 2 from the commercial power supply 1 to the emergency power supply 4, converts the DC of the emergency power supply 4 to AC using the inverter, and supplies the power to the motor 2. supply

Then, the control unit 3 determines the position of the elevator stopped between floors.
The elevator will automatically land on the nearest floor. After the elevator reaches the floor, the elevator doors are automatically opened, and after all passengers have descended to the floor, the elevator doors are closed and remain in that state until the power is restored.

[Problem that the invention seeks to solve]

Incidentally, buildings constructed in recent years are often equipped with a backup power source, and in the event of a power outage of the commercial power source 1, a system is adopted in which this backup power source is used to drive various electrical devices (loads 5). However, even if elevators are installed in old buildings or small-scale buildings, there are many buildings that do not have such a backup power source. During a power outage, lighting and other electrical equipment, except for elevators, become unusable.

Furthermore, even if a building is equipped with a backup power source, the capacity of the backup power source may be insufficient due to the subsequent installation of additional electrical devices, and in this case, after a certain period of time, the electrical devices will no longer be used. It becomes impossible.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art described above and to provide an emergency power supply device for an elevator that can drive electrical loads in a building even during a power outage.

[Means for solving problems]

In order to achieve the above object, the present invention provides an elevator, an emergency power source used to drive the elevator during a power outage, an electrical load installed in a building in which the elevator is installed, and an electrical load that is used to drive the elevator during a power outage. It is characterized by comprising a detection means for detecting automatic landing, and a connection means for connecting an emergency power source to the electrical load upon detection by the detection means.

[Effect]

When the commercial power supply fails, the elevator power is switched to the emergency power supply, and the elevator is driven by the emergency power supply and automatically lands on the nearest floor. This automatic landing of the elevator is detected by a detection means, and when this is detected, the emergency power source is connected to an electrical load within the building. This allows the electrical load to be used even in the event of a power outage.

〔Example〕

The following five embodiments of the present invention will be explained based on illustrated embodiments.

FIG. 1 is a circuit diagram of an emergency power supply device for an elevator according to an embodiment of the present invention. In the figure, parts that are the same as those shown in FIG. 2 are given the same reference numerals, and explanations thereof will be omitted. 6 is the control unit 3
This wiring 6 is connected to the emergency power source 4 at the same time when the circuit of the motor 2 is switched to the emergency power source 4 by the control unit 3 during a power outage of the commercial power source 1. When the power outage is restored and the circuit of the motor 2 is switched to the commercial power supply 1 side by the control unit 3, the emergency power supply 4 is disconnected at the same time. 7 is a relay connected to the commercial power source 1, and 7a is a contact point of the relay 7 interposed between the commercial power source 1 and the load 5. Reference numeral 8 denotes a switch which closes when the elevator automatically lands on the nearest floor, the door opens and the passenger exits, and the door closes again after confirming this state with the control unit 3. 9 is a timer that operates after a certain period of time has passed after the voltage is applied, and when a passenger is unable to get off for some reason during automatic landing, this timer is used to secure time for the passenger to open the door and get off. be. 9a is a contact that closes when the timer 9 is activated; 10 is a relay; 10al;

10a2 is a contact point of the relay 10.

Next, the operation of this embodiment will be explained. When the commercial power source 1 has a power outage, the relay 7 becomes inactive, its contact 7a opens and its contact 7b closes, and the controller 3 switches to the emergency power source 4, and the motor 2 is driven by the emergency power source 4.
The elevator will land at the nearest floor. After landing in the elevator, the elevator door is opened and the switch 8 is closed after the passenger gets off. After a certain period of time, the timer 9 is activated. When the timer 9 operates, its contact 9a closes, which causes the relay 1o to operate and contacts 10al and 10a2 to close.

By opening the contact 10a2, the operation of the relay 10 is self-maintained and continues. Then, by closing the contact 10al, the emergency power source 4 is switched to the changeover switch of the control unit 3, the contact 10a1,
and is connected to the load 5 via the previously closed contact 7b.

In this case, the emergency power supply 4 only drives the motor 2 for a short time when the elevator arrives at the nearest floor and opens and closes the elevator door, so it still has enough energy to drive other electrical devices. In most cases, they are retained. Therefore, even if the commercial power source 1 is out of power, the load 5 can be used after the elevator automatically lands on the floor. For example, if the load 5 is a light, it can be turned on even during a power outage.

In this way, in this embodiment, in the event of a power outage, after the elevator automatically lands on the floor, the emergency power supply is connected to the electrical load installed in the building, so even if a power outage occurs, the electrical load will not be affected. can be used.

In the above description of the embodiment, one electrical load is shown, but it is obvious that the present invention can be applied to a plurality of electrical loads. Furthermore, even if a backup power source is provided within the building, it is natural that the present invention can be applied to compensate for the lack of capacity of the backup power source.

〔Effect of the invention〕

As described above, in the present invention, the emergency power supply of the elevator is connected to the electrical load after the J elevator automatically lands on the floor during a power outage, so the electrical load can be driven even during a power outage. , the remaining power of the emergency power source can be fully utilized.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of an emergency power supply device for an elevator according to an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional emergency power supply device for an elevator.

Claims (1)

[Claims] 1. An elevator, an emergency power supply used to drive the elevator during a power outage, an electrical load installed in the building in which the elevator is installed, and a detection device that detects that the elevator has automatically landed on the floor during a power outage. and connecting means for connecting the emergency power source to the electrical load upon detection by the detecting means.