JP2659445B2 - Elevator emergency call system - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator emergency notification device, and more particularly, to an elevator emergency notification device configured to sound its operation, particularly an alarm buzzer.

[Related Art] In recent years, in a high-rise apartment house or the like, a monitored device is provided without an administrator on the elevator side, and a monitoring device is provided on the service center side, and the monitored device and the monitoring device are connected to each other. They are connected via telephone lines for centralized monitoring. As an example, there is an elevator emergency notification device in which a communication device in a car and a communication device provided in a service center are connected via a telephone line as described in JP-B-59-17072.

On the other hand, in some cases, the emergency notification device of the elevator is required by a specific administrative agency to provide a facility for sounding an alarm buzzer for notifying a third party until the resetting device is activated, when the device is activated.

[Problems to be Solved by the Invention] However, since the conventional emergency notification device has the above-described configuration, when confirming its function at the time of maintenance work, the alarm buzzer will continue to sound until the reset means is operated. This alarm sound may be annoying to the occupants in the vicinity where the elevator is installed, and may cause trouble.

Also, when a maintenance person dispatched at night or the like contacts the service center, it usually uses a telephone, but if there is no public telephone nearby, use the elevator emergency notification device. It is conceivable to contact the service center. However, if the emergency notification device is used as described above, the alarm buzzer sounds at a high volume, which may hinder sleep of nearby residents.

An object of the present invention is to provide an elevator emergency notification device that can be used for maintenance work or the like without inconveniencing nearby residents.

Means for Solving the Problems In order to achieve the above object, the present invention provides a method of making a telephone call between a first telephone device provided in an elevator car and a second telephone device provided in a service center. An emergency notification device for an elevator, wherein the emergency communication device is connected so as to be able to communicate with each other using a line, and when the first communication device is activated, an alarm buzzer provided at least in a car is sounded until resetting means is activated. In conjunction with the operation of switching the maintenance operation switching switch to the maintenance operation side, the sound of the alarm buzzer is suppressed, and the alarm in the suppressed state in conjunction with the operation of switching the maintenance operation switching switch to the normal operation side. A means for returning the buzzer sound to a normal sound is provided.

[Operation] Since the elevator emergency notification device according to the present invention is configured as described above, when the maintenance operation switching switch is operated to switch the elevator to the maintenance operation, the alarm buzzer sounds in conjunction with the operation of the maintenance operation switching switch. Since the suppression means works to reduce the sound volume of the alarm buzzer, there is no inconvenience to nearby residents due to a function test during maintenance work or notification that maintenance has been completed. After the maintenance work is completed, the maintenance operation switching switch is switched to return to the normal operation. At this time, the alarm buzzer sound volume described above is linked with the operation of the maintenance operation switching switch. Is released, and the sound volume returns to the normal sound volume.

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

FIG. 1 is a circuit diagram showing a main configuration of the emergency notification device. The communication device 1 provided on the elevator side is connected to a communication device 2 provided on the service center side via a telephone line 3 and connected to an alarm device 5 via a signal line 4.

The communication device 1 has a call button including twin contacts 10 and 11, and one contact 10 of the call button and a call start relay 12 are connected in series between power supplies P and N. The other contact 11 and the alarm activation relay 13 are connected in series between the power supplies P and N. Further, between the power supplies P and N, a series connection of a maintenance operation switching switch 14 for switching the elevator to the maintenance operation, a maintenance operation detection relay 15 for detecting that the elevator has been switched to the maintenance operation by the operation of the switch 14, When the call circuit 16 is activated and the telephone line 3 is closed,
The call circuit 16 for setting the call circuit 16 to a state in which a call can be made.
A contact 17 transmitted in response to an establishment signal for establishing the call function and a stop signal transmitted from the call circuit 16 based on a signal for releasing the telephone line 3 sent from a communication circuit 20 to be described later. A contact 18 responsive to a signal is connected to a series connection of the call circuit 16, and a contact 12a of the call start relay 12 is connected in parallel with the contacts 17,18. Also, when the alarm start relay 13 is activated, the series connection of the contacts 13 _a1 to self-holding alarm activation relay 13 and reset button 19 for releasing the operation is connected in parallel with the twin contact 11.

On the other hand, the communication device 2, the speech circuit 20 for performing voice communication with the communication circuit 16 that is activated by contact 16 _a1, point 16 _a1 to operate when detecting a signal sent from the communication circuit 16 described above above A series connection, a contact _16a2 that operates when a signal transmitted from the communication circuit 16 is detected, and a series connection with the display device 23 are connected between the power supplies P and N, respectively. A contact 21 for closing the telephone line 3 sent from the call circuit 20 and for responding to a call establishment signal for setting the call circuit 20 to a talkable state;
A series connection with a contact 22 responsive to a signal transmitted by 20 to stop the operation of the speech circuit 20 and to release the telephone line 3 based on this is connected in parallel with _16a1 .

The alarm device 5 includes an alarm buzzer 50 provided in the elevator.
And an alarm buzzer 51 disposed at an appropriate place near the elevator hall or the vicinity thereof, are connected between the power supplies P and N together with the limiting resistor 52 for suppressing the volume and the contact 13 _a2 of the alarm activation relay 13 to limit the volume. Contact for maintenance operation detection relay 15 in parallel with resistor 52
15b is connected and configured.

The maintenance operation detection relay 15 described above, its contact 15b,
The limiting resistor 52 suppresses the sound of the alarm buzzers 50 and 51 in conjunction with the switching operation of the maintenance operation switching switch 14 to the maintenance operation side, and the switching operation of the maintenance operation switching switch 14 to the normal operation side. Means for returning the ringing sounds of the alarm buzzers 50 and 51 in the interlocking state to the normal ringing sounds are configured.

Next, the operation of the emergency notification device when an abnormality occurs in the elevator will be described.

First, it is assumed that a failure occurs in the elevator, the elevator car stops at an intermediate position on the floor, the passenger is locked in the car, and the call button is operated by the passenger. Then, by this operation, the contacts 10 and 11 of the call button are closed, and the call start relay 12 and the alarm start relay 13 are both connected between the power supplies P and N to be energized, and the alarm start relay 13 is activated.
The relay 13 for activating the alarm is self-held by the contact _13a1, which is a normally open contact. At this time, the elevator is not in the maintenance operation state, and therefore, the maintenance operation detection relay 15 is not energized, so that the normally closed contact 15b is not opened. Thus the alarm start relay 13 continues to ringing in while being self-retained, alarm buzzer 50 and 51 by the contact 13 _a2 is is connected between the power supply P, N.

As a result of the residents near the alarm buzzers 50 and 51 notifying the maintenance company etc., the reset button 19
Is operated, the self-holding circuit of the alarm activation relay 13 is opened, the alarm activation relay 13 is deenergized, and accordingly, the contact _13a2 is opened, and the alarm buzzers 50, 51 stop sounding. Is done.

The contact 12a is activated by the activation of the call start relay 12 at this time.
Is closed and the call circuit 16 is activated, so that the call circuit 16
Sends a signal for calling the communication device 2, the contact _16a2 is closed by the transmitted signal, the display device 23 is operated, and the service center staff is informed that the communication device 1 has been operated. .

Also, based on the signal transmitted from the communication circuit 16, the contact 16
_{When a1} is closed and the communication circuit 20 is operated, and a response device (not shown) of the communication circuit, for example, a handset such as a telephone or a communication state setting switch is operated, the communication circuit
20 is set to a communication enabled state, and an establishment signal for closing the contact 21 and closing the telephone line 3 is transmitted. When the call circuit 20 enters the talkable state, the establishment signal is transmitted to the call circuit 16 via the telephone line 3, and the call circuit 16 receiving this signal responds to the establishment signal for putting the call circuit 16 into a talkable state. The contact is closed to set the communication circuit 16 to a state in which communication is possible.

In this way, the call circuit 16 and the call circuit 20 are connected, and the passenger trapped in the elevator reports the situation to a service center clerk, who can notify the passenger of the response. .

When the mutual confirmation is completed, when the above-described handset or operation switch (not shown) provided in the communication circuit 20 is operated, the contact 22 is opened and a stop signal is transmitted from the communication circuit 20, and the operation of the communication circuit 20 is stopped. Stop phone line 3
Is released. This signal is transmitted by the telephone line 3 to the communication circuit 16, and based on this signal, the contact 18
Is opened and a stop signal for stopping the operation is transmitted from the call circuit 16, and the call circuit 16 stops operating.

Next, the operation of the emergency notification device during maintenance work will be described.

First, when performing a function check test of the communication device 1 and the communication device 2 in the periodic maintenance inspection, the maintenance operation switching switch 14 is operated to the maintenance operation side. Then, the maintenance operation detection relay 15 is connected and energized between the power supplies P and N, and the normally closed contact 15b is opened. Therefore, when the maintenance worker performs the same operation to operate the communication device 1 as described above, the communication circuit 16 and the alarm activation relay 13 are activated, but the alarm buzzers 50 and 51 are connected to the power sources P and The volume of the sound is suppressed because it is connected in series between N. Therefore, it is possible to confirm the notification operation between the speech circuit 16 and the speech circuit 20 and to confirm the alarm buzzers 50 and 51 based on the suppressed volume, thereby eliminating the noise problem for the occupants near the elevator.

When the above-mentioned regular inspection is completed and the maintenance worker operates the maintenance operation switching switch 14 to return to the normal operation, the maintenance operation detection relay 15 is demagnetized and opened until then. The contact 15b is closed, and the suppression of the sound volume of the alarm buzzers 50 and 51 is released. Therefore, there is no possibility of forgetting to return the sound volume of the alarm buzzers 50 and 51 to the original state, that is, the normal state.

Also, when a maintenance worker dispatched by a fault call at night informs the service center that the procedure has been completed, if the communication device 1 is operated as described above, it can be used as a communication means for contacting the service center. Can also be used,
There is no need to go to a place where a public telephone is available, and maintenance work efficiency can be greatly improved.

[Effects of the Invention] As described above, according to the present invention, when the maintenance operation switching switch is switched to the maintenance operation side during maintenance work, the sound of the alarm buzzer can be controlled in conjunction with this operation, It is possible to confirm the sounding of the alarm buzzer while eliminating the noise problem for the occupants near the elevator during the maintenance work, and it is possible to significantly improve the efficiency of the communication work with the service center.

When the maintenance operation is completed and the maintenance operation switching switch is returned to the normal operation side, the suppression of the alarm buzzer sound is automatically released in conjunction with this operation, and the normal operation sound is used. Therefore, there is no possibility that the sound of the alarm buzzer is forgotten to return to the normal sound.

[Brief description of the drawings]

FIG. 1 is an electric circuit diagram showing a main part of an elevator emergency notification device according to one embodiment of the present invention. 1,2 ... communication device, 3 ... telephone line, 4 ... signal line, 4
…… Alarm device, 14 …… Maintenance operation switching switch, 15 …… Maintenance operation detection relay, 15b …… Contacts, 16,20 …… Talk device,
50,51 …… alarm buzzer, 52 …… Limiting resistance.

Claims (1)

(57) [Claims] 1. A first communication device provided in an elevator car and a second communication device provided in a service center are connected to each other using a telephone line so as to enable mutual communication,
When the first communication device is activated, at least the alarm buzzer provided in the car is sounded until the resetting means is activated. In the elevator emergency notification device, the operation of switching the maintenance operation switching switch to the maintenance operation side is performed. The sound of the alarm buzzer is suppressed in conjunction with the switching of the maintenance operation switching switch to the normal operation side, and the sound of the alarm buzzer in the suppressed state is returned to the normal sound in conjunction with the operation of switching the maintenance operation switching switch to the normal operation side. An emergency notification device for an elevator, characterized by comprising means.