CN2164158Y - Wired two-way talkback doorbell - Google Patents

Abstract

The utility model discloses a device that can supply both sides to carry out conversation is applicable to one of them party and needs often the occasion of initiative calling the other party and require the conversation, can regard as intercom, doorbell or calling device etc. and its key feature lies in, and two group's line terminals of change over switch and each circuit in the built-in have distinctive's relation of connection, compare with current product, the utility model discloses only must two core communication lines and can not set up the auxiliary battery, still reach the purpose of ringing and conversation, have simple structure, constitute that the component is few and the cost is low and installation, convenient to use's advantage.

Description

Two-way wire intercommunicating door bell

The utility model relates to a kind of device of conversing for both sides, particularly a kind ofly is suitable for the intercommunication telephone doorbell that a side wherein needs frequent active call the other side's requirement to converse simultaneously.Can be used as the cry device of speakerphone, doorbell or hospital ward that office, family use etc.

The door bell device that original family generally uses, its function ratio is more single, generally only be used for producing the bell ring signal, be used to inform that owner has the visiting purposes of guest, in recent years, constantly perfect along with the appearance of city high rise buildingization and building management, the doorbell of communicating talkback function has appearred having, this doorbell, can be after the bell ring signal sends, by owner carry machine directly with outdoors or outdoor guest converse so that the measure that owner after the identity of confirming the guest, just takes to open the door and so on, but up to now, the entryphone of selling on city's field boundary exists following deficiency, and the one, this class device must adopt quad as order wire, and the 2nd, being arranged at outdoor part must the distribution pond.But the speakerphone of contemporaneity has been obtained bigger progress in these areas therewith, to pay the transmitter of machine, transmitter, the receiver that receiver is connected to main frame respectively as proposing, make the machine of paying to save the scheme of setting battery, and propose to adopt the change over switch conversion to connect order wire, make quad can change into the scheme of two core order wires, 90223867.1,92205039.2 of Chinese utility model patents are suggested plans and have just been embodied above-mentioned design.

Entryphone of the present utility model, its order wire only adopt two heart yearns, also can save pair battery that machine disposed.

Therefore, the purpose of this utility model is the entryphone that a kind of neotectonics will be provided, and this structure is suitable for adopting two heart yearns as its order wire, and can save and pay the battery that machine disposed.

Its purpose realizes like this: this entryphone device comprises receiver, transmitter, amplifying circuit, button that is arranged at the machine of paying and receiver, transmitter, amplifying circuit, ringing circuit, battery and the change over switch that is arranged at main frame, wherein, the terminals that the two core order wires of drawing are arranged from the mid point of two groups of line ends of change over switch, its main characteristics is, the normally-closed contact of first group of line end of described change over switch is connected with the normally opened contact of second line end, and the tie point that forms thus is connected with negative supply; Described main frame transmitter one end is connected with positive supply, and the other end is connected with described main frame amplification circuit output end, and the tie point of Xing Chenging is connected with the normally opened contact of described first group of line end thus; The normally-closed contact of described second group of line end then is selected from one of following state with the negative pole end points of main frame ringing circuit, the annexation that the triggering end points forms:

A. the normally-closed contact of second group of line end is connected with the triggering end points with the negative pole end points of ringing circuit;

B. the negative pole end points of the normally-closed contact of second group of line end and ringing circuit or trigger one of end points and be connected, remaining another end points then is connected with negative supply.

Entryphone of the present utility model, owing to adopt above-mentioned structure, when making it be in hook state, change over switch is for paying the condition that the operation that makes the main frame bell ring has been prepared to utilize host power supply to return and triggered the main frame ringing circuit or negative supply is provided to the main frame ringing circuit of pushing of machine button, and when it is in off hook state, change over switch makes main frame that the common voice channel of power supply and main and submachine is provided for pair machine by two core order wires, thereby, this entryphone is only with two core order wires and can be at the machine of paying battery be set, still can reach the purpose of ring and conversation, simultaneously, it has simple in structure, element is few and cost is low and installation, advantage easy to use.

Fig. 1--Fig. 5 is physical circuit figure of the present utility model, and state of living in is hook state.

The utility model is described in further detail below in conjunction with accompanying drawing:

Shown in accompanying drawing, pay the machine amplifying circuit and form by transistor BG1, BG2, be used for the signal of this pair machine receiver MIC2 is amplified; The main frame amplifying circuit is made of integrated IC1, and it accepts to amplify from the signal of main frame receiver MIC1 and to it; The main frame ringing circuit is made of integrated IC2, and its output signal is connected to integrated IC1, amplifies rear drive transmitter SP1 and sends bell ring.

Embodiment one, and the normally-closed contact of second group of line end of this machine is connected with the triggering end points with the negative pole end points of ringing circuit.With reference to Fig. 1, when this entryphone is in hook state (state usually), change over switch K1-1 connects to K1-3, K2-1 connects to K2-3, when button AN presses, negative supply is through K1-3, K1-1, order wire 1, button AN returns from order wire 2, again through K2-1, K2-3 connects to the negative pole of ringing circuit and trigger end, and through the D point to amplifying integrated IC1 power supply, at this moment, the output signal of ringing circuit IC2 is through amplifying integrated IC1 and amplifying the back and driving transmitter SP1 sends bell ring, behind off-hook, change over switch K1-1 connects to K1-2, K2-1 connects to K2-2, at this moment, negative supply is through K2-2, K2-1 connects to the negative pole that amplifies integrated IC1 and pay machine circuit, and positive supply is then through transmitter SP1, K1-2, K1-1 connects to the positive pole of paying machine circuit, simultaneously, set up talk channel between main and submachine, either party sound amplifies through we's amplifying circuit after receiver is transformed into the signal of telecommunication again, and reaches the other side's transmitter through order wire 1, be reduced to sound through transmitter, reach conversation.

Embodiment two, and with reference to Fig. 2, the normally-closed contact of second group of line end of this machine is connected with the triggering end points of ringing circuit, and the negative pole end points of ringing circuit then is connected with negative supply.Because ringing circuit is in powering state, when AN pressed, negative supply triggered ringing circuit to amplifying when integrated IC1 powers, and produces bell ring equally, and according to the analysis of embodiment 1, this machine also can reach the purpose of ring, conversation.

Embodiment three, and with reference to Fig. 3, the normally-closed contact of second group of line end of this machine is connected with the negative pole end points of ringing circuit, and the trigger end of ringing circuit then is connected with negative supply.According to above-mentioned analysis, negative supply will return to amplifying the integrated IC2 power supply of integrated IC1 and ring, finish the task of ring and conversation.

More than three embodiment illustrated that the utility model entryphone only adopts two heart yearns as order wire, and save and be provided with to pay a machine battery, still can reach the purpose of ring, conversation.

What need explain is, these three embodiment realize better scheme of the present utility model, in fact, the negative pole of main frame amplifying circuit and receiver can not be connected the mid point of second group of line end, and directly be connected to negative supply (with reference to Fig. 5), equally also can realize the application's purpose, just the negative pole of amplifying circuit and receiver is connected with the mid point of second group of line end, can under hook state, cut off the power supply of amplifying circuit and receiver, to reach power saving, in addition, be preferably between the mid point of the tie point of main frame transmitter and amplification circuit output end and first group of line end of change over switch and connect a transmitter (with reference to Fig. 4) again, so that bell ring can be obtained bigger volume during ring, and when off-hook, the problem that this transmitter can not existed conversation to reveal by short circuit.

Claims (3)

1, a kind of wired two-way entryphone, comprise receiver, transmitter, amplifying circuit, button that is arranged at the machine of paying and receiver, transmitter, amplification phone, ringing circuit, battery and the change over switch that is arranged at main frame, wherein, the terminals that the two core order wires of drawing are arranged from the mid point of two groups of line ends of change over switch, it is characterized in that, the normally-closed contact of first group of line end of described change over switch is connected with the normally opened contact of second group of line end, and the tie point that forms thus is connected with negative supply; Described main frame transmitter one end is connected with positive supply, and the other end is connected with the output of described main frame amplifying circuit, and the tie point of Xing Chenging is connected with the normally opened contact of described first group of line end thus; The normally-closed contact of described second group of line end then is selected from one of following state with the negative pole end points of main frame ringing circuit, the annexation that the triggering end points forms:

A. the normally-closed contact of second group of line end is connected with the triggering end points with the negative pole end points of ringing circuit;

B. the negative pole end points of the normally-closed contact of second group of line end and ringing circuit or trigger one of end points and be connected, remaining another end points then is connected with negative supply.

According to the entryphone of claim 1, it is characterized in that 2, the negative pole of described main frame amplifying circuit and receiver makes into to be connected with the mid point of second group of line end of described change over switch.

3, according to the entryphone of claim 1 or 2, it is characterized in that, between the mid point of the tie point of described main frame transmitter and amplification circuit output end and first group of line end of change over switch, also be connected to a transmitter.

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