JPH0531429U - Intercom connection channel selection device - Google Patents

Abstract

(57) [Summary] (Correction) [Configuration] When the call button SW1 is operated, the communication path of the intercom base unit MQ1 is set to a plurality of intercom slaves AQ ₁ , B.
Q _1, CQ ₁ of one connected, interphone parent when the speech path connection circuit 8, 9 and 10 to disconnect the connection with other intercom slave, and one of the intercom master unit and the intercom slave is connected Ringing tone generation circuit 11 for generating a ringing tone to be sent to the call path of the machine, and a call detection circuit 14 that operates when one of the intercom slaves is connected to the intercom master unit by the call path connection circuit, and this circuit The intercom master unit for one station is used for multiple stations by providing the call channel state maintaining circuit 15 for maintaining the state of the call channel in which the intercom slave is connected or disconnected by the call channel connecting circuit when the To do. [Effect] By using the intercom base unit for one station for multiple stations, scale advantages in manufacturing and sales can be obtained, and the number of parts can be reduced and the models can be unified.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a channel selection device for intercom connection, and more particularly to a channel selection device for intercom connection that connects a communication path of an intercom master unit to one of a plurality of intercom slave units and sends a ringing tone to the intercom master unit.

[0002]

[Problems to be Solved by Prior Art and Invention]

Conventional intercom apparatus as shown in FIG. 2, it is composed of A intercom slave AQ _11, B door Honko machine BQ ₁₁ and interphone parent device MQ _11, A doorphone entrance station AQ ₁₁ and B intercom slave BQ ₁₁ is It is directly connected to the intercom base unit MQ ₁₁ by connecting line L ₁₁ . The A doorphone handset AQ ₁₁ and the B doorphone handset BQ ₁₁ each have a microphone 1, a speaker 2, amplifiers 3 and 4, a 4-wire 2-wire conversion circuit 5 and a call button 6, and a call button 6 of the A doorphone handset AQ _11. When is pressed, the call signal speaker of the intercom base unit MQ ₁₁ rings with a pin and a pop, and the fact that there is a call from the A doorphone handset AQ ₁₁ is indicated by the light emission of the call light emitting diode. When the handset 7 of the intercom base unit MQ ₁₁ is turned off and the channel selection button is pressed, the A doorphone handset AQ ₁₁ is selected and a call can be made via the connection line L ₁₁ . In this state, when the call button 6 of the B-door phone slave unit BQ ₁₁ is pressed, the speaker for ringing signal makes a ringing sound, indicating that the B-door phone slave device BQ ₁₁ has called.

Usually, the intercom device is a combination of two intercom slave units and one intercom master unit. One of the intercom slave units is installed at the entrance and the other intercom slave unit is installed at a gate or the like. The base unit is installed in the kitchen along with a gas leak alarm and bath water level sensor. For this reason, if the number of intercom master units increases to 1 and the number of intercom slaves increases to 3 and 4, the intercom master unit must be newly designed and manufactured according to the number of stations. In addition, designing and manufacturing a different model intercom base unit has the drawbacks of reduced scale merit in manufacturing and sales, and increased number of parts.

[0004]

[The purpose of the device]

 The present invention has been made in view of the above points, and when the call button is operated, the communication path of the intercom master unit is connected to one of the plurality of intercom slave units and disconnected from other intercom slave units. The call path connection circuit, the ring tone generation circuit that generates the ring tone that is sent to the call path of the interphone base unit when one of the intercom base unit and the intercom base unit is connected, and the intercom base unit with the call path connection circuit A call detection circuit that operates when one of the intercom slaves is connected, and a call path that maintains the state of the call path that the doorphone slave is connected or disconnected by the call connection circuit when the call detection circuit operates By providing the status maintenance circuit, the intercom base unit for one station can be used regardless of the increase or decrease in the number of intercom slave units, and the intercom base unit for one station can be used for multiple stations. Manufacturing Sales on the scale merit can be obtained in, and an object thereof to provide a reduction 及 beauty unification intercom connection tuning device attained the type of parts.

[0005]

[Means for Solving the Problems]

 The intercom channel selection device of the present invention connects a call path of an intercom master unit to one of the plurality of intercom slave units and disconnects from another intercom slave unit when a call button is operated. Circuit and the intercom master in the intercom master in the intercom master in the intercom master and the intercom master in the intercom master in the intercom master Call detection circuit that operates when one of the intercom and the intercom slave is connected, and the communication that maintains the state of the communication path that the intercom slave is connected or disconnected by the communication path connection circuit when the communication detection circuit operates. And a circuit for maintaining a speech path.

[0006]

[Action]

 When the call button of the intercom slave unit is pressed, the communication channel connection circuit of the intercom connection channel selection device connects the communication channel of the intercom slave unit and the intercom master unit. Since the communication path between the intercom master station and the intercom master station is provided in a one-to-one correspondence, one of the multiple doorphone slave machines is connected to the intercom master station via the communication channel of the intercom master station. Once connected, the intercom base unit has selected one of the intercom slave units. In this state, if the ringing tone generation circuit sends a ringing tone to the intercom base unit, pulling, pulling, pulling and pulling signals that do not interfere with the call are transmitted to the handset of the intercom base unit. From this calling signal, it can be seen that the calling button has been pressed by another intercom slave. Next, when one of the intercom master unit and the intercom slave unit is connected, the busy signal detection circuit operates to detect whether or not a call is in progress. The communication path state maintaining circuit maintains the status of the communication path connected or disconnected by the communication path connection circuit until the handset is turned on by the interphone master unit.

Thus, the intercom master unit for one station can be used regardless of the increase or decrease in the number of intercom slave units, and by using the intercom master unit for one station for multiple stations, it is possible to manufacture and sell it. The advantages of scale are obtained, and the number of parts can be reduced and the models can be unified.

[0008]

【Example】

An embodiment of the intercom channel selection device according to the present invention will be described below in detail with reference to FIG. 1 and 2 are designated by the same reference numerals, the description thereof will be omitted. As shown in FIG. 1, the intercom station selection device EQ according to the present invention has the device terminals MT _{1 to} MT ₁₂ on the side of the intercom slave device connected via the connection lines L _{1 to} L ₁₂ to the A intercom slave device AQ ₁ and the B intercom device. Machine BQ ₁ and C intercom slave CQ ₁ are connected to respective slave terminals T _{1 to} T ₄ . The master terminals T ₂₁ and T ₂₂ on the side of the intercom master MQ ₁ are connected to the device terminals MT ₂₁ and MT ₂₂ via connection lines L ₂₁ and L ₂₂ . The A doorphone handset AQ ₁ has a microphone 1, a speaker 2, amplifiers 3 and 4, a 4-wire 2-wire conversion circuit 5 and a call button SW ₁ , and the microphone 1 and the speaker 2 have 4-wire 2 via the amplifiers 3 and 4. It is connected to the 4-line side of the line conversion circuit 5. The 2-wire side of the 4-wire / 2-wire conversion circuit 5 is connected to the slave terminals T ₁ and T _2, and _{one and} the other of the call button SW ₁ are connected to the slave terminals T ₃ and T ₄ . When the handset 7 is provided in the interphone base unit MQ ₁ and the communication path is short-circuited, a ringing tone can be heard by a ringing signal speaker (not shown).

The intercom connection channel selection device EQ has a set coil S and a reset coil R, and is provided with contacts a1, a2, b1, b2, c1 and c2. A relay 8, B relay 9, C relay 10 and call out. Sound oscillator 11, call detection circuit 14, call path state maintaining relay 15 provided with contacts m1, m2, m3, m4, call path short circuit relay 16 provided with contacts s1, s2, s3 and diode D ₁ ~ Composed of D ₁₂ .

The device terminals MT ₃ , MT ₇ , and MT ₁₁ are connected to a reference potential point, and the device terminals MT ₄ , MT ₈ , and MT ₁₂ are connected via contacts m 1, m 2, and m 3 of the speech path state maintaining relay 15. is connected to the anode of the diode _{D 1, D 4, D 7} , the anode of the diode D _1, D _4, D ₇ is connected to the set coil S of a relay 8, B relays 9, C relay 10. The cathode of the diode D ₁ is connected to the reset coil R of the B relay 9 and the C relay 10 via the anodes of the diodes D ₅ and D ₈ , and similarly, the anodes of the diodes D ₄ and D ₇ are D ₄ , The cathode of D ₇ is connected to the reset coil R of the C relay 10, A relay 8 and B relay 9 via the cathodes of the diodes D ₉ , D ₂ , D ₃ and D ₆ and the anode, and the set coil S and the reset coil The other end of R is connected to the power supply + B. Further, the device terminals MT ₄ , MT ₈ and MT ₁₂ are connected to the other end of the ring back tone oscillator 11, one end of which is connected to the power supply + B through the cathodes and anodes of the diodes D ₁₀ , D ₁₁ and D ₁₂ . The output side of the ringing tone oscillator 11 is connected to the device terminal MT ₂₁ via a resistor 12 and a capacitor 13. Further, the other end of the call detection circuit 14 connected to the device terminal MT ₂₁ is connected to the other end of the communication path state maintaining relay 15 whose one end is connected to the reference potential point.

The device terminals MT ₁ , MT ₂ , MT ₅ , MT ₆ , MT ₉ , MT ₁₀ have contacts a 1, a 2, b 1, b 2, c 1, c 2 of the A relay 8, B relay 9, and C relay 10 respectively. It is connected to the device terminals MT ₂₁ and MT ₂₂ via. Further, the contact s1, s2, s3 of the device terminals MT ₁ and MT _2, MT ₅ and MT _6, MT ₉ and M T is the ₁₀ speech path shorting relay 16 are respectively connected. Here, Ru is applied through a call button SW ₁ to connect to the reference potential point to the device terminal MT ₃ and presses the call button SW ₁ of A doorphone entrance station AQ ₁ is closed to the apparatus terminal MT _4. When the reference potential point is applied to the device terminal MT ₄ , the reference potential point is connected to the other end of the ringing tone oscillator 11, one end of which is connected to the power supply + B through the cathode and anode of the diode D ₁₀ , so that the ringing is performed. The sound oscillator 11 operates to send a ringing tone to the device terminal MT ₂₁ via the resistor 12 and the capacitor 13 on the output side. On the other hand, the speech path short-circuiting relay 16 connected in parallel to the ringing tone oscillator 11 also operates, so that the contacts s1, s2, s3 are closed and the speech path is short-circuited. In this state, when a reference potential point is applied to the device terminal MT ₄ , the path to the set coil S of the A relay 8 reaches the anode and cathode of the diode D ₁ and the contact m ₁ of the closed communication path state maintaining relay 15. Then, the A relay 8 operates. When the A relay 8 operates, the B relay 9 and the C relay 10 reset coil R is excited via the cathodes and anodes of the diodes D ₅ and D ₈ , so that the B relay 9 and the C relay 10 operate and recover. Instead, it is always in a recovery state. Since the intercom base unit MQ ₁ is short-circuited at the contact s ₁ of the call path short-circuit relay 16, a call signal speaker (not shown) beeps and pops. When the handset 7 is off-hook, the call detection circuit 14 detects that the call is in progress and activates the call path state maintaining relay 15. When the communication path state maintaining relay 15 operates, the contacts m1, m2, m3 are opened, and the path between the A relay 8, B relay 9, C relay 10 and the device terminals MT ₄ , MT ₈ , MT ₁₂ is cut off. Unless the handset 7 is hooked on the intercom base unit MQ ₁ , the communication path state maintaining relay 15 cannot be restored. Therefore, the communication path is maintained in the current state, and the ring tone oscillator 11 operates even if the call button SW ₁ is pressed on the A doorphone handset AQ ₁ , B doorphone handset BQ ₁ or C doorphone handset CQ _1. Does not change the operation and recovery status of A relay 8, B relay 9, and C relay 10. It should be noted that when the call button SW ₁ is pressed on another B-doorphone slave unit BQ ₁ or C-doorphone slave unit CQ ₁ that is not in a call, the ringing tone oscillator 11 operates and pulls or pulls to the handset 7 of the intercom master unit MQ _1. , A pulling signal is sent to the extent that pull and pull does not interfere with the call. As a result, it can be seen that the call button SW ₁ is pressed on another B-door phone slave device BQ ₁ or C-door phone slave device CQ ₁ .

The number of intercom slave units in the above embodiment is not limited to three. The relay and the contact may be configured by wiring logic such as an AND circuit using a solid element.

[0013]

[Effect of the device]

 The intercom connection channel selection device according to the present invention is a communication path for connecting a communication path of an interphone base unit with one of the plurality of intercom handset units and disconnecting connection with another intercom handset unit when a call button is operated. In the connection circuit and the call path connection circuit, when the interphone master unit and one of the doorphone handset units are connected by the call path connection circuit, the ring tone generation circuit that generates the ring tone that is sent to the call path of the interphone master unit The intercom main unit and the intercom slave unit that operate when one of the intercom slave units are connected, and the intercom slave unit maintains the state of the call path that was connected or disconnected by the call path connection circuit when the call detection circuit operates The intercom master unit for one station can be used regardless of the increase or decrease in the number of intercom slave units, and the intercom master unit for one station can be used for multiple stations. Used for Doing, manufacture, economies of scale can be obtained on sale, and there is a unity can be achieved the effect of reduction and the type of parts.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of a channel selection device for intercom connection according to the present invention.

FIG. 2 is a block diagram of a conventional intercom device.

[Explanation of symbols]

8 ・ ・ ・ ・ ・ ・ A relay (call path connection circuit) 9 ・ ・ ・ ・ ・ ・ B relay (call path connection circuit) 10 ・ ・ ・ ・ ・ ・ C relay (call path connection circuit) 11 ・ ・ ・..Ring tone oscillator 14..Call detection circuit 15 .. ・ Relay for maintaining communication path status (communication path status maintenance circuit)

Claims (1)

[Scope of utility model registration request] 1. A calling device for intercom connection in which a plurality of intercom slaves having a call button are connected to one side and an intercom master unit called from the intercom slaves is connected to the other side of the intercom slave. When a button is operated, a call path connecting circuit that connects the call path of the intercom master unit to one of the plurality of intercom slave units and disconnects the other intercom slave units, and the intercom by the call path connecting circuit A ringing tone generation circuit that generates a ringing tone that is transmitted to the speech path of the intercom master unit when one of the master unit and the intercom slave unit is connected, and the intercom master unit and the intercom subunit in the communication channel connection circuit. A call detection circuit that operates when one of the callers is connected, and a call path state in which the intercom slave is connected or disconnected by the call connection circuit when the call detection circuit operates. Intercom connection channel selecting device, characterized in that provided a speech path state maintaining circuit for lifting.