JPS6227583B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a telephone set having a switch that connects to a central office exchange when the handset is picked up, and disconnects from the exchange when the handset is taken down. Regarding.

[Prior Art] In such telephones, dialing operations are performed with one hand while holding the handset with the other hand. For example, if the user is holding a telephone directory or carrying luggage with one hand, dialing operations may not be possible. In other words, as shown in Figure 1, for example, a conventional telephone has a position where the handset is supported, and when the handset is picked up, it is connected to the central office exchange, and when the handset is put down, the connection with the exchange is cut off. Two switches 1 and 2 are provided, and in the figure, terminals 3 and 2 are provided.
4 is connected to an exchange, and terminals 5 and 6 are connected to a dial and a handset, respectively. Therefore, the above-mentioned drawbacks occurred.

It is easy to use a push button instead of a switch that turns on and off by picking up or putting down the handset. However, if you do this, and you forget to push the button back, the telephone will remain connected to the exchange, and if you call that telephone from another telephone, it will be busy. It's inconvenient.

Further, the time required for dial operation varies depending on the person and the situation, so it is not possible to set the time simply by providing a timer.

[Object of the Invention] Therefore, an object of the present invention is to provide a telephone that allows dialing without picking up the handset, and that returns to the normal state after a certain period of dialing, regardless of the dialing time.

[Structure of the Invention] According to the present invention, in a telephone having a switch that connects to a central office exchange when the handset is picked up and disconnects from the exchange when the handset is taken down, a contact point parallel to the switch is provided. Relay with 〓〓〓〓
, a relay having contacts in a detection circuit that detects power transmission from a central office exchange, a timer configured to update the connection time using an electrical signal from a movable stopper installed at the stopper position of the dial of the telephone, and a telephone. An electromagnetic circuit is constructed by a push button for connecting the terminal and a telephone exchange, and a current flows through the electromagnetic magnet during a certain connection time set by the timer, and when the certain connection time set by the timer has elapsed. Afterwards, the electromagnetic circuit is configured to be disconnected, and the detection circuit is further provided with an alarm means.

[Operations and Effects of the Invention] Therefore, when the push button is operated, a current flows through the electromagnetic circuit, the timer is activated, and the relay (electromagnetic magnet) and the timer are activated during the connection time of the timer. If you operate the dial, the connection time of the timer will be updated each time your finger engages with the stopper, so the electromagnetic circuit will be activated after a certain period of time set by the timer has passed since the last time you turned the dial. The call goes off, and by that time the receiver is already in place. Therefore, there is no inconvenience such as timeout due to the length of the dial operation time, and the operation is similar to that of a normal telephone. Therefore, there is no inconvenience caused by forgetting to press the operation button after the end of the call.

In addition, the detection circuit causes an alarm means such as a buzzer, a speaker or a lamp to issue an alarm, so that the electromagnetic circuit can know whether the telephone line is ringing or busy during a certain connection time. Can be done.

Furthermore, even if the electromagnetic circuit and/or the detection circuit should fail, it can still operate like a normal telephone, and there is no risk of it becoming inoperable due to failure.

Additionally, the present invention can be easily installed in regular telephones.

[Example] Hereinafter, an example of the present invention will be described with reference to FIG. 2.

In FIG. 2, when the spring-loaded push button 11 of the electromagnetic circuit A is pressed, current flows through the circuit A for a preset connection time of a timer 12 provided in the circuit A, for example, 30 seconds, and the The relays, that is, the electromagnets 13 and 13 provided in the circuit A of the lever are turned on, and the contacts 1 provided in parallel with the switches 1 and 2, respectively, are turned on.
4 and 15 are closed. A connection between the telephone and the central office exchange is thus established even if the telephone is not picked up.

If the dial of the telephone is turned while the electromagnetic magnets 13, 13' in the circuit A of FIG. The signal reaches the timer 12 of A, and as a result, the timer 12 updates the connection time of the timer for the fixed connection time, for example, 30 seconds, every time an electrical signal is sent. In other words, the timer used for circuit A starts each time an electrical signal is sent.
The timer has a mechanism in which the magnets 13 and 13' are energized and the contacts 14 and 15 are kept closed for 30 seconds.

The telephone also has a spring-loaded push button 1.
7, and when the push button 17 is pressed, the circuit A is opened, the relays 13 and 13' are immediately de-energized, and the contacts 14 and 15' are immediately opened.

Furthermore, the relay, that is, the electromagnetic magnet 1, is connected so that the opening and closing are performed in synchronization with the electromagnetic magnet circuit A.
8, and by providing the detection circuit B with a lamp 19 and/or a speaker or buzzer 20, it is possible to detect a call being notified from the telephone line without picking up the handset from the telephone. You can check the status of the call or whether it is busy.

[Summary] As described above, according to the present invention, an electromagnetic magnet circuit is provided with a push button and a timer for connecting a telephone and a central office exchange, and the connection time of the timer is determined by moving the dial to the stop position. Since it is updated each time, the electromagnetic circuit will be disconnected after a certain connection time set by the timer has elapsed since the last time the dial was turned. Therefore, even if the user forgets to press the button after the call ends, the phone returns to its normal state without causing any inconvenience.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the electrical wiring of the handset support of a conventional general telephone, and FIG. 2 is a diagram showing the electrical wiring of a telephone in which the present invention is implemented. 1, 2...Switch, 3, 4...Exchanger side terminal,
〓〓〓〓
5, 6...Telephone side terminal, 11...Push button with spring, 12...Timer that can update set time by receiving electric signal, 13...Relay electromagnetic magnet, 1
4, 15...Contact, 16...Transmission mechanism using a movable stopper provided at the stopper position of the dial, 17
...Push button with spring, 18...Relay electromagnetic magnet, 19...Lamp, 20...Speaker or buzzer. 〓〓〓〓

Claims (1)

[Claims] 1. In a telephone equipped with a switch that connects to the central office exchange when the handset is picked up and disconnects from the exchange when the handset is taken down, a relay having a contact point parallel to the switch and a switch connected to the central office exchange A relay having a contact point in a detection circuit that detects power transmission, a timer configured to update the connection time using an electrical signal from a movable stopper installed at the stopper position of the dial of the telephone, and an exchanger between the telephone and the central office. An electromagnetic circuit is configured with a push button for connecting the timer, and a current flows through the electromagnetic magnet during a certain connection time of the timer.
The electromagnetic circuit is configured to turn off after a certain connection time set by a timer.
The telephone further comprises an alarm means in the detection circuit.