CN2397679Y

CN2397679Y - Telephone with earphone

Info

Publication number: CN2397679Y
Application number: CN 99241600
Authority: CN
Inventors: 罗劲
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-11-19
Filing date: 1999-11-19
Publication date: 2000-09-20
Anticipated expiration: 2009-11-19

Abstract

The utility model relates to a telephone set with an earphone, which adopts an ordinary stereo headphone, and two trifurcating jacks are installed on the telephone set. The inner of a jack 8 is inserted with an external connecting earphone plug, and the jack 8 is connected with a built-in loudspeaker 6 circuit of the telephone set; the inner of a jack 9 is inserted with a microphone plug of an external connecting earphone, and the jack 9 is connected with an electret microphone 7 circuit in the telephone set; a four-core plug can also be used for connecting with a jack 10. The utility model has the advantages of convenient reception, good call quality and simple structure.

Description

Telephone set installs additional answers earphone

The utility model relates to telephone set and installs additional and answer earphone.

The hand-free function of prior art telephone set, in actual the use, because speech quality is poor, the user does not hear the other side's sound, if keep off the built-in microphone of telephone set, the other side also is difficult to not hear user's voice, what is more important, confidentiality is poor during use, so this function performs practically no function, people often just use this function once in a while when dialing.

The purpose of this utility model is to provide a kind of telephone set to install additional and answers earphone, and speech quality is good, the tool confidentiality.

Existing telephone set possesses " hands-free " function (during use, when pressing the Hands-free key of telephone set, promptly triggered " hands-free " function of telephone set, built-in loud speaker and the Electret condenser microphone of telephone set this moment started working).This programme is exactly two three core jacks to be installed (be applicable to common stereophone (earphone and microphone one in phone, two three-prong plugs are arranged)), jack and plug shape see accompanying

drawing

1,2,3,4 for details, one of them is an output plughole 8, circuit with telephone set boombox 6 is connected, and is used for listening the other side's voice; Another is an input jack 9, is connected with 7 circuit of the Electret condenser microphone in the telephone set, is used for transmitting to the other side user's voice.

For keeping the original hand-free function of telephone set, jack adopts special construction.When not inserting plug, loud speaker and Electret condenser microphone that telephone set is built-in are in on-state, see on the accompanying

drawing

1, and 3,4 pin of jack are in the contact of A point, and 2,5 pin of jack contact in the B point; When inserting plug, loud speaker and Electret condenser microphone that telephone set is built-in are in off-state, see on the accompanying

drawing

2,3,4 pin of jack disconnect in the A point, 2,5 pin of jack disconnect in the B point, the earphone of external stereophone is connected the circuit of telephone set boombox 6 simultaneously, the microphone of external stereophone is connected the circuit of the built-in Electret condenser microphone 7 of telephone set, telephone set is handled hands-free state following time, and what external stereosonic earphone was accepted is the electroacoustic signal that handfree circuit for telephone set sends the telephone set boombox to; The microphone of external stereophone replaces the built-in Electret condenser microphone work of telephone set, a K switch 1 is set between 2 of

jack

8,4 pin in accompanying drawing 3, the left and right acoustic channels that is used for stereophone in parallel, when the plug of earphone inserts, Closing Switch K1, the receiver of earphone left and right acoustic channels just is in state in parallel, simultaneously voice signal; When not having plug to insert, need K switch 1 is in off-state the short circuit owing to the closure of 3,4 pin otherwise A1, B1 two name a person for a particular job.

Advantage of the present utility model is as follows:

1, be applicable to extended telephone conversation, the utility model adopts headphone (band microphone) to receive calls, and does not need the hand telephone set receiver.

2, do not influence user's work on hand, save time, raise the efficiency.

3, adopt headphone and special-

purpose jack

8,9,10 production costs low, easy to use, speech quality is good, the tool confidentiality.

4, than the used special junction box of the employed earphone of telecommunications industry operator (containing microphone), cheap, only in phone, increase jack, adopt the normal stereo earphone of (earphone band microphone), easy to operate.

Fig. 1: the utility model telephone set installs additional answers three-prong plug and the jack structure figure that earphone adopts.

Structure chart when plug inserts jack among Fig. 2, the figure.

Jack 8 among Fig. 3, Fig. 1 connects boombox 6 schematic diagrams.

Jack 9 among Fig. 4, Fig. 1 connects built-in microphone 7 schematic diagrams.

Schematic diagram when Fig. 5, the utility model adopt four-core plug 10 and earphone special.

Embodiment 1:

Accompanying drawing 1 explanation:

Normal stereo earphone (earphone and microphone one) has two three-prong plugs, the c position of a position of 1 pin contact plug of jack, the b position of 4 pin contact plugs, 2 pin contact plugs; The a position that is used for the plug of earphone connects the ground wire of earphone, and b position and c position are connected the left and right sides receiver of stereophone respectively; The a position that is used for the plug of microphone connects microphone, and the c position is in idle condition.

Fig. 2, when not inserting plug, 3,4 pin of jack are connected at the A point; 2,5 pin are connected at the B point.When inserting plug, 3,4 pin of jack disconnect at the A point; 2,5 pin disconnect at the B point.

Accompanying drawing 3 explanations:

1 pin and 2 pin of jack 8 that are used for inserting the headset plug of stereo headset are connected telephone set network sends two points of A1, B1 from signals to telephone set boombox 6; 4 pin are connected with telephone set boombox 6 with 5 pin; 3 pin are connected in the B1 point; Are K switch 1 between 2 pin and 4 pin.K1 is used for the left and right acoustic channels of stereophone in parallel, when the headset plug of headset inserts, Closing Switch K1, the receiver of the left and right acoustic channels of earphone just is in and closes state, voice signal simultaneously, when not inserting headset plug, need K switch 1 is in off-state the short circuit owing to the closure of 2,4 pin otherwise A, B two name a person for a particular job.

Operation principle: when not inserting headset plug, the signal that telephone set receives picks out from A1, and---------to B1, signal is back to ground wire in the telephone set---to 3 pin---to 4 pin to boombox 6 (this moment, K1 disconnected) again to 5 pin to 2 pin.

When inserting headset plug, the signal that telephone set receives picks out to 2 pin from A1---to plug C position---to the headset earpiece coil---to plug a position to jack 1 pin---to the B1 point, signal is got back to ground wire in the telephone set; Use dual-channel headphone, another route, signal picks out from A1, and------K switch 1 closure---to 4 pin---is to plug b position, to another receiver coil of earphone---to plug a position to jack 1 pin---B1 point, signal are got back to ground wire in the telephone set to 2 pin.

Fig. 4 is used for inserting 1 pin of jack 9 of phono connector of stereo headset and 2 pin and is connected telephone set network and accepts the built-in microphone signal D of telephone set, two points of C; 4 pin are connected with the built-in microphone of telephone set with 5 pin; 3 pin are connected in the D point; Two points of E, F are in idle state.

Operation principle: when not inserting phono connector, the built-in microphone other end of built-in microphone 7 one terminations 4 pin---to 3 pin---D point signal; 5 pin---to 2 pin---C1 point, C1, D point are signal tie points in the telephone set.When inserting plug: signal is from external microphone, and---plug C position---jack 2 pin---C1 clicks and enters telephone set.Microphone ground wire---plug a position---ground wire in jack 1 pin---D point---telephone set.

Embodiment 2, on the normal stereo Headphone structure, install the scheme of hands-free trigger switch additional:

In accompanying drawing 4, the D point is connected in

jack

9 and 1 pin, and the F point is connected in 4 pin of jack 9, and the E point can join by the line that a switch order with 1 pin and D, when in the jack 9 plug being arranged, and in these K switch 2 closures, the jack during no plug, this switch disconnection; The E point then is connected the hands-free switch contact of telephone set respectively with the F point; When external stereophone phono connector was inserted jack, during K switch 2 closures, the E point was communicated with 1 pin, plug a position and external stereophone microphone ground wire; The F point connects 4 pin, plug b position, is communicated with external stereophone microphone.When K switch 2 disconnected, E point and D point disconnected, and get final product on-hook.

Embodiment 3:

See Fig. 5, adopt the scheme of four-core plug 10 and earphone special:

Need when adopting this programme the boombox and the built-in microphone of telephone set are disconnected (can adopt a double-point double-throw switch to control) simultaneously with telephone set network, perhaps with boombox and the cancellation of built-in microphone.In accompanying drawing 5, the four-core plug has aH, bH, four positions of cH, dH, and 11 pin of the jack 10 of its use connect the aH position of four-core plug, dH position, 13 pin that 12 pin connect the four-core plug connect the cH position of four-core plug, the bH position that 14 pin are connected in the four-core plug; AH, 2 connection telephone sets of BH boombox circuit, 2 of CH, DH connect built-in microphone circuit, 2 circuit that connect hands-free trigger switch of EH, FH.AH, C1H, 3 of EH are connected in the aH position of four-core plug simultaneously; The BH point is connected in that bH position, DH point are connected in the cH position, FH is connected in the dH position.

The receiver of external earphone special (adopt a receiver or adopt two receiver parallel connections) wiring is at aH, the bH position of four-core plug 10; The microphone wiring of earphone is at aH, the cH position of four-core plug, earphone answer aH, the dH position of (hanging up) switch wiring at the four-core plug.The standard component that the element of earphone special can adopt the normal stereo earphone to use.

Operation principle: when inserting four-core plug 10, the other side's speech output signal picks out from AH, BH in the telephone set, is communicated with the aH position from 11,14 n pin package ns, is communicated with the receiver of external earphone special; External earphone special microphone signal imports four-core plug aH, cH position into, picks out from 11 pin, 13 pin, is connected to the sound input point of speaking in the telephone set from C1H, DH; EH, FH connect hands-free trigger switch circuit, be connected with aH, the dH position of four-core plug 10 from 11,12 pin, thereby connect earphone answer (hanging up) switch.

Claims

1, telephone set installs additional and answers earphone, and its feature comprises:

Two three core jacks are installed in telephone set; One of them is an output plughole 8, is connected with the circuit of telephone set boombox 6; Another is an input jack 9, is connected with the Electret condenser microphone in the telephone set 7;

The headset plug of jack 8 interpolation stereophones, the phono connector of jack 9 interpolation stereophones;

2, telephone set according to claim 1 installs additional and answers earphone, and its feature comprises:

The a position of 1 pin contact plug of jack 8, jack 9, the b position of 4 pin contact plugs, the c position of 2 pin contact plugs;

The a position that is used for the plug of earphone connects the ground wire of earphone, and b position and c position are connected the left and right sides receiver of stereophone respectively; The a position that is used for the plug of microphone connects the ground wire of microphone, and the b position connects microphone, and the c position is in idle condition;

One pin of jack 8 and 2 pin are connected in the phone circuit and send on two points of A1, B1 of signal to telephone set boombox 6, and 4 pin are connected with telephone set boombox 6 with 5 pin, and 3 pin are connected to the B1 point, are K switch 1 between 2 pin and 4 pin;

1 pin of jack 9 and 2 pin are connected on two points of C1, D of accepting the built-in microphone signal of telephone set in the telephone set network, and 4 pin are connected with the built-in microphone 7 of telephone set with 5 pin, and 3 pin are connected in the D point;

3, telephone set according to claim 2 installs additional and answers earphone, and its feature comprises:

The D point is connected in 1 pin of jack 9, and the F point is connected in 4 pin of jack 9, and the line of order with 1 pin and D by a K switch 2 in E o'clock joins, when in the jack 9 plug being arranged, and the K2 closure, in the jack 9 during no plug, the K2 disconnection, the E point is connected the hands-free switch contact of telephone set respectively with the F point.

4, telephone set according to claim 1 installs additional and answers earphone, and its feature comprises:

When adopting four-core plug and earphone special, telephone set boombox and built-in microphone are disconnected simultaneously with telephone set network, can adopt a double-point double-throw switch to control;

11 pin of four-core jack 10,12 pin, 13 pin, 14 pin connect aH position, dH position, cH position, the bH position of four-core plug respectively;

AH, 2 connection telephone sets of BH boombox circuit cut-off point, 2 of CH, DH connect built-in microphone circuit cut-off point, and EH, FH connect the circuit of hands-free trigger switch;

The receiver wiring of external earphone is at aH, the bH position of four-core plug 10, and the microphone wiring of external earphone is at aH, the cH position of four-core plug, earphone answer aH, the dH position of switch wiring at four-core plug 10.