CN2514576Y

CN2514576Y - Auxiliary carrying-free device for fixed telephone

Info

Publication number: CN2514576Y
Application number: CN 01261074
Authority: CN
Inventors: 温永全
Original assignee: YUANJIE COMMUNICATION EQUIPMENT CO Ltd
Current assignee: YUANJIE COMMUNICATION EQUIPMENT CO Ltd
Priority date: 2001-09-07
Filing date: 2001-09-07
Publication date: 2002-10-02
Anticipated expiration: 2011-09-07

Abstract

The utility model relates to an optional hands-free device of fixed telephones, which is composed of a circuit box which can change to adapt to various telephones and a hands-free handset. The utility model can be added with a hands-free function (non-audifier type) to the original telephone without needing accessorial sets and changing all the functions of the original telephone, which can be applied to various telephones to ensure that the user' hands can move freely, thereby avoiding the troubles of holding the telephone by head.

Description

The additional hands-free device of fixed type telephone

Technical field

The utility model relates to the improvement of telephone set, especially a kind of additional hands-free device of fixed type telephone.

Background technology

Usually general fixed-phone when desire receives calls as hands-free way, can use the hands-free phone of the built-in formula that amplifies, and so it has back coupling and cavity as empty paddy acoustic effect, and picks up the height ratio background sound again easily, is difficult for accepting for most user; Maybe can use with the telephone set of forms such as external headband or ear-hang words receiver comparatively desirable, so installed and do not had above-mentioned two kinds of functions for great majority, the phone of an especially back function, user's phone of hand-free function that then must change the outfit again, not only spend and bother.

Summary of the invention

Propose a kind of phone that needn't change the outfit so the utility model is special, can keep all functions of former phone again, and applicable to " the additional hands-free device of fixed type telephone " of any independent TW two wire and total type multichannel extension set four-wire type.

The additional hands-free device of fixed type telephone of the present utility model is made up of form words receivers such as one group of circuit function boxcar that contains connecting line and one group of headband or ear-hangs,

Description of drawings Fig. 1 is the utility model operation principle calcspar; Fig. 2 is the utility model embodiment circuit diagram.Symbol description: keep former hand-held words auditory function socket J-2 with the former phone of former phone connecting line L-1 words receiver socket J-0 words receiver socket J-1 and exempt from hand-held words receiver gang socket J-3 to exempt from hand-held words receiver gang socket J-4 hand-held or exempt from hand-held diverter switch SW-1 words handset circuitry and integrate change over switch SW-2 microphone both positive and negative polarity and integrate change over switch SW-3 audio frequency transformer T-1

Embodiment

As Fig. 1, shown in 2, one words receiver socket J-1 is arranged in the utility model circuit conversion box, the connecting line L-1 that is added with the utility model device is connected to the phone words receiver socket J-0 of this device of desire device, and former phone words phone plug needs to take out earlier before this, and insert " keeping former hand-held words auditory function " socket J-2 of this circuit conversion box, when " hand-held or exempt to hand " of this circuit conversion box when diverter switch SW-1 places 1 hand position, talk about receiver socket J-0 after connecting line L-1 is connected to J-1 by former phone, be connected to the former hand-held words auditory function that J-2 promptly finishes former phone again through SW-1, and when SW-1 places 2 to exempt from hand-held words auditory function position, former hand-held phone defunctionalization and the purpose that is converted to this device " is exempted from hand-held words auditory function ".

Because the arrangement mode of the hand-held words of general fixed type telephone receiver connecting line, because of each production firm there is no unified regulation, 1-4 receiver, 2-3 microphone person are arranged, 1-4 microphone, 2-3 receiver person are also arranged, therefore this device circuit interchange box is provided with SW-2, the words receiver connecting line of no consistency arrangement mode is integrated into conforming arrangement, and reaches the function of the unlikely misconnection of words receiver; SW-3 then is with the different microphone microphones of arranging connection of positive and negative electrode, correcting is the polarity that is consistent, and the words handset circuitry after SW-2 and SW-3 integration arrangement correctly is connected to J-3, then the words receiver with forms such as headband or ear-hangs inserts J-3, promptly finishes the hand-held words auditory function of exempting from of this device.

J-3 is that one or four contacts are talked about the socket that receiver is not total to earthing mode, therefore exempts from the plug that hand-held words receiver must not be total to earthing mode with four contacts; Right commercially available or generally other communication products employed to exempt from hand-held words receiver great majority be the three contacts plugs of ground connection formula altogether, for the convenience that this device user has common appearance to use is considered, therefore this device can add an audio frequency transformer T-1 between SW-2 and J-3, can change J-3 into three contacts ground connection formula altogether by four contact types, J-4 as shown in the figure or J-3 and J-4 adorn in this device box altogether also can.

By above-mentioned explanation SW-2 is that different words receiver connecting lines that put in order of switching and SW-3 are just switching the different microphone microphones that put in order, negative polarity is done correcting work and is established, after the installation of this device, can earlier SW-2 be placed 2 position, and the words receiver on the original call machine carried move to that phone is other to be shelved, this moment is because the words receiver switch in the phone is in the state of answering, it promptly is the tram that the user can be allocated to SW-2 the position that boundless and indistinct sound appears in hand-free receiver, then rap the microphone microphone with finger or penholder again, dial simultaneously and put SW-3 to hearing that the position when slightly knocking is the tram from receiver, but or Outgoing Call, adjust with talking mode and also can, as the location confirmation that SW-2 and SW-3 put errorless after, this two switch can be installed appended panel sealing label or otherwise fixing the pinning with this, no longer adjust, and finish above-mentioned installation and adjust fixing after, the user only needs to place 1 promptly to be that the original words tractor driver holds the words auditory function SW-1, place 2 hands-free words to listen the position to use the hands-free words receiver of this device and dial, can allow the carefree words of user answer a call, both hands can untrammeledly operate again.

The utility model be a kind of on fixed type telephone additional function, making its lift-rising is the device of exempting from portable words auditory function, its have install easy, easy and simple to handle, needn't change former phone and can keep original all functions of original words again, and provide hands-free words handset function device for the user under the minimum again prerequisite of cost with practicality.

What remake supplementary notes is, the utility model is on a kind of telephone set that is additional to original no hands-free words receiver, make it increase the device of a hands-free words handset function, be different from in-building type and exempt from handset telephone, its independent TW two wire can't hold use fully altogether with total type extension set four-wire type, and the utility model is then applicable to the phone of any kenel.

Claims

1, a kind of additional hands-free device of fixed type telephone, it is characterized in that: this device comprises:

One can be installed on the circuit ConvertBox of various multi-form wired phone receivers, and connecting line;

Forms such as one group of headband or ear-hang exempt from hand-held words receiver;

The foregoing circuit ConvertBox contains one and holds the input socket (J-1) that words receiver socket is connected with the original call tractor driver, connecting line (L-1), one keeps former hand-held words handset function and the socket (J-2) established, one hands or exempts from hand-held words auditory function diverter switch (SW-1), the one words receiver wiring that various differences are put in order is integrated into the switch (SW-2) that consistency is arranged, one is integrated into the switch (SW-3) that is consistent with the wiring of different positive-negative polarity microphone microphone, one four contact is not total to ground connection formula words receiver socket (J-3), one three contact is total to ground connection formula words receiver socket (J-4); One is not total to ground connection with four contacts and is converted to the three contacts audio frequency matching transformer (T-1) of ground connection formula altogether.