JPH0434611Y2 - - Google Patents

Description

[Detailed description of the invention] <Technical field> This invention relates to a telephone circuit for a fire alarm.

<Prior art> Conventionally, the telephone circuit installed in a fire alarm system allows calls from the transmitter installed in each warning area to the receiver, and between the receiver and the display or mobile receiver. It was hot.

<Problems with the conventional technology> However, calls can only be made between the transmitter and the receiver, and although these receivers are installed in manager's rooms and disaster prevention centers, they are often unoccupied at night. There were drawbacks such as the inability to quickly contact those involved by phone in the event of a fire.

<Means for solving the problem> In view of the above-mentioned drawbacks, this invention is a fire alarm system that allows communication between a transmitter and a receiver and a mobile receiver, and between a receiver and a mobile receiver. In a fire alarm telephone circuit equipped with a mobile alarm receiver, the receiver has a telephone reception relay that detects when a telephone is inserted into the telephone jack of the transmitter. and a first auxiliary relay for detecting picking up of the receiver's telephone.
A first ringer operated by the telephone reception relay and a first telephone display are provided, and the mobile receiver is equipped with a mobile receiver calling switch or a telephone reception relay provided in the receiver. The second one is activated and stops ringing when the receiver picks up the phone.
a ringing device, a second auxiliary relay that detects that the telephone of the mobile receiver is picked up and stops the ringing of the first ringing device of the receiver, and a receiver that is directly connected to the first ringing device of the receiver. It is characterized by being provided with a call switch and a second telephone display.

<Operation> When a telephone is connected to the telephone jack at the transmitter in order to talk to the receiver or the mobile receiver, the telephone reception relay operates at the receiver, and the telephone display and ringer operate. When a telephone is picked up at a receiver or a mobile information receiver, an auxiliary relay of the receiver to which the telephone is installed is activated, the ringing device stops ringing, and the telephone becomes ready for a call. Further, when the calling switch of a receiver or a mobile receiver is operated, the ringing device of the other receiver is sounded, and the telephone is then picked up and the ringing device is stopped, allowing the user to make a call.

<Embodiment> An embodiment of the fire alarm telephone circuit of this invention will be described below in detail with reference to the drawings.

In the figure, 1 is a transmitter installed in each alert area (only one alert area is shown in the figure), 2 is a receiver installed in a manager's room or disaster prevention center, and 3 is a night shift room or This is a transfer receiver installed at the front desk of a hotel.
4, 5, and 6 are telephones installed in the transmitter 1, receiver 2, and transfer receiver 3, respectively, and 7 is the receiver 2.
Telephone reception relay installed in , 8 and 9 are receiver 2
and first and second auxiliary relays 10 and 11 for detecting picking up of telephones 5 and 6 provided in the transfer receiver 3; Buzzers 12 and 13 serve as first and second ringing devices, and first and second telephone indicators 12 and 13 are provided on the receiver 2 and the mobile receiver 3, respectively. 14 is a switch for calling the transfer receiver; 1
5 is a receiver call switch.

The telephone receiving relay 7 is connected between power terminals 19 and 20 through a telephone jack 16 of the transmitter 1, a resistor 17, and a diode 18. The first auxiliary relay 8 is connected between the power terminals 19 and 20 through the normally closed side of the switch 21 of the telephone 5. The buzzer 10 is connected to the normally closed side of the switch 21 of the telephone 5, the contact 91 of the second auxiliary relay 9 of the transfer receiver 3, and the contact 71 of the telephone reception relay 7.
through the normally closed side of the switch 21 and the receiver call switch 15 of the transfer receiver 3.
It is connected to power supply terminals 19 and 20 through. The buzzer 11 of the transfer receiver 3 is activated through the contact 92 of the second auxiliary relay 9 and the transfer receiver calling switch 14 of the receiver 2, and also through the contact 92, the contact 72 of the telephone reception relay 7, and the first The auxiliary relay 8 is connected through the switching contact 81 between the power supply terminals 19 and 20, respectively. Further, the second auxiliary relay 9
power terminal 19 through the normally closed side of the jack 22,
Connected between 20. Furthermore, a first telephone display 1
2 is the contact 73 of the telephone reception relay 7 and the resistor 2
3, and the second telephone display 13 is connected to the power supply terminal 19 through a resistor 24, a diode 25, a transfer receiver calling switch 14, or a contact 72 of the telephone reception relay 7 and a switching contact 81 of the first auxiliary relay 8. , 20.

Next, the operation of the above circuit will be explained. If you want to make a call from the transmitter 1 installed in the restricted area to the receiver 2 or the transfer receiver 3, connect the telephone 4 to the telephone jack 16 of the transmitter 1, and the telephone reception relay 7 of the receiver 2 will operate. . This operation causes contact 7 to
1, 72, 73 are closed, the buzzers 10, 11 are sounded and the telephone indicators 12, 13 are lit. For example, if the telephone 5 of the receiver 2 is picked up first, the auxiliary relay 8 is restored and the buzzers 10, 11
The ringing of the telephones 4 and 5 is stopped, and it becomes possible to talk to the telephones 4 and 5. Further, when the telephone 6 of the transfer receiver 3 is connected to the telephone jack 22 first, the auxiliary relay 9 is restored, its contact 91 is opened, and the buzzer 10 of the receiver 2 stops ringing. Then, it becomes possible to talk to the telephones 4 and 6.

Further, when the mobile receiver calling switch 14 is operated, the buzzer 11 of the mobile receiver 3 sounds, and when the receiver calling switch 15 of the mobile receiver 3 is operated, the buzzer 10 of the receiver 2 sounds. When the phone rings and the telephones 5 and 6 are picked up, the respective auxiliary relays 8 and 9 are activated.
is restored, the buzzers 10 and 11 stop ringing, and communication between them becomes possible.

In addition, although the above-mentioned example explained about the transfer receiver, it can be implemented also in the display device provided with the similar display function.

<Effects> Since this invention is configured and operates as described above, a fire alarm system capable of communicating between a transmitter and a receiver or a mobile receiver and between a receiver and a mobile receiver can be achieved. This has the effect of providing a telephone circuit.

[Brief explanation of the drawing]

The drawing is a circuit diagram of one embodiment of the telephone circuit of the fire alarm system of this invention. 1... Transmitter, 2... Receiver, 3... Transfer receiver, 4, 5, 6... Telephone, 7... Telephone reception relay, 8... First auxiliary relay, 9... Second auxiliary relay, 10, 11... buzzer, 12... first telephone display, 13... second telephone display, 14...
...Switch for calling the transfer receiver, 15...Switch for calling the receiver.

Claims (1)

[Scope of utility model registration request] In the telephone circuit of a fire alarm system equipped with a mobile alarm receiver, the receiver includes a telephone reception relay that detects when a telephone is inserted into the telephone jack of the transmitter, and a relay that detects that the telephone of the receiver is picked up. A first auxiliary relay, a first ringing device operated by the telephone receiving relay, and a first telephone display are provided, and the mobile receiver is provided with a mobile receiver calling device provided on the receiver. a second ringing device that is operated by a telephone switch or a telephone reception relay and stops ringing when the receiver's telephone is picked up; The mobile receiver is equipped with a second auxiliary relay for stopping, a receiver calling switch directly connected to the first ringer of the receiver, and a second telephone display. Fire alarm telephone circuit.