CN2465418Y

CN2465418Y - Telephone with loadspeaker

Info

Publication number: CN2465418Y
Application number: CN 01205298
Authority: CN
Inventors: 姚元华
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-14
Filing date: 2001-02-14
Publication date: 2001-12-12
Anticipated expiration: 2011-02-14

Abstract

The utility model relates to a hand-free telephone set which is characterized in that miniature speech conveying and receiving devices 2 are externally connected to a telephone host 1, and the speech conveying and receiving devices 2 are inserted into a socket 111 on the side surface of a shell 11 of the host through a conducting wire 23 connected with the speech conveying and receiving devices and a plug 24 which is installed on the end part of the conducting wire. The speech conveying and receiving devices are arranged in a switch base 3 on the upper part of the shell and are contacted with a speech receiving device switch 31 in the switch base, and the speech conveying and receiving devices can be picked off from the switch base. The upper part of the shell is also provided with a main switch 4 for the speech conveying and receiving devices, and the inner of the host is provided with an intensifier circuit 5 which is connected with a receiver telephone transmitter 12 and a miniature telephone transmitter 22. The utility model has the advantage of enabling people not to take up telephone receivers during receiving and making a phone call, and conversation can be carried out so long as the miniature speech conveying and receiving devices are worn on ears.

Description

Hand-free telephone

The utility model relates to a kind of telephone set, particularly relate to a kind of need not telephone receiver picked up, but with ear type miniature give, receiver send, the hand-free telephone talked about.

As everyone knows, the transmitter of black phone and receiver all are arranged on the two ends of receiver, all will hang on earlier when receiving calls and talking, and hand-held receiver is conversed.Owing to must hand receiver during conversation, the activity of people's both hands is restricted, carry out telephony recording or do other thing just very inconvenient as need.Though existing telephone is provided with hand-free function, oral area must be pressed close to phone and just can converse, and communication effect is bad, audio distortions.

The purpose of this utility model be to provide a kind of be circumscribed with miniaturely give, receiver, and the hand-free telephone that speech quality is good, make people's receiver that when answering and call, needn't pick up the telephone, and as long as will be miniature give, receiver is worn over and can converses on the ear, to be convenient for people to the hands to handle other affairs in the conversation while.

For achieving the above object, the utility model provides a kind of hand-free telephone, this telephone set comprises main station 1, it is characterized in that, on main station 1, be circumscribed with miniature sending, receiver 2, this send, receiver is plugged on the socket 111 of host machine casing 11 sides by lead 23 that is attached thereto and the plug 24 that is contained in wire termination, it send, receiver then places in the switch base 3 on casing top and contacts with receiver switch 31 in the switch base, and can take from switch base, casing top also is provided with one and send, receiver master switch 4 is provided with an intensifier circuit 5 that is connected with miniature transmitter 22 with receiver transmitter 12 in the main frame; Answering circuit and connecing of above-mentioned socket and main frame sent, the receiver master switch is connected in series with the receiver switch, and with the receiver switch of main frame and connect; One end of receiver switch with give, the receiver master switch is connected, the ring circuit of the other end and main frame with answer circuit and be connected; Give, the other end of receiver master switch and ring circuit with answer circuit and be connected.

Describedly give, receiver 2 comprises receiver 21 and transmitter 22, wherein receiver is an earplug, transmitter then is a mini microphone, both connect by lead 23, the lead other end is equipped with plug 24.

Described receiver 21 and transmitter 22 can be made one.

Described switch base 3 is one and places the deck that receiver is used that the casing 11 in the deck is provided with receiver switch 31.

Described intensifier circuit 5 comprises amplifying triode Q1, coupling capacitance C1, C2 and resistance R 1, R2, R3, R4, wherein triode Q1 base stage is connected with transmitter 22 through coupling capacitance C1, resistance R 4, and its collector electrode is connected with receiver transmitter 12 through coupling capacitance C2, resistance R 1.

Good effect of the present utility model is, since on existing plain old telephone, be provided with external miniaturely give, receiver, make people when answering or converse, needn't hand receiver, and as long as with miniaturely give, receiver is worn on the ear, thereby can effectively solve deal with the work while conversing affairs and contradiction, improve the utilance and the operating efficiency of both hands.Simultaneously owing to be provided with intensifier circuit, therefore improved give, receiving speech quality, make the clear wash rice of speech melodious.In use, can be provided with also that special messenger's special use is sent, receiver, when the people leaves can with give, receiver takes off, keeping health and to help health, effectively stop by microphone propagate various diseases may.Certainly, the utility model also can not influence the use of original call receiver.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is a profile schematic diagram of the present utility model.

Fig. 2 is circuit theory diagrams of the present utility model.

Fig. 3 is an intensifier circuit schematic diagram of the present utility model.

Consult Fig. 1～Fig. 3, hand-free telephone of the present utility model is the improvement of making on the basis of existing ordinary telephone set, and its main frame 1 can be existing various main station.Main points of the present utility model be on main station 1, be circumscribed with one miniaturely give, receiver 2, this send, receiver 2 comprises receiver 21 and transmitter 22, they can be split type, also can make one.In this example, receiver is the ear type receiver, transmitter then is a mini microphone, both connect by lead 23, the lead other end is equipped with plug 24, this send, receiver is plugged in by plug 24 on the socket 111 of host machine casing 11 sides, socket then with the answering circuit and connect of main frame, this socket and plug adopt pin type binding post commonly used.Split typely give, the receiver 21 of receiver is at phone and places on the switch base 3 on casing 11 tops when not answering state, this switch base is one and places the deck that receiver is used, it can be one and the corresponding semi-annular shape deck of earplug shape, it also can be a deck that constitutes by three elastic cards as shown in Figure 1, make earplug can put into easily and fix, can take easily again during use.Casing 11 in the deck is provided with receiver switch 31, an end of this switch with give, the receiver master switch is connected, the ring circuit of the other end and main frame with answer circuit and be connected.Its structure and effect are identical with receiver switch on the phone, when earplug is put into switch base 3, just the receiver switch are depressed, and make phone be in holding state.For control is sent, the use of receiver 2, also be provided with on casing top one give, receiver master switch 4, this master switch is connected in series with the receiver switch, and with the receiver switch of main frame and connect, its other end and ring circuit with answer circuit and be connected.Miniaturely send, during receiver 2, press master switch 4 earlier and just can converse or dial using.The utility model circuit theory as shown in Figure 2, K1 is the telephone receiver switch among the figure, K2 is the receiver switch, K3 for give, the receiver master switch, they all adopt the double-point double-throw switch identical with telephone receiver.By diagram, K3 connects with K2, and in parallel with K1.For obtaining good speech quality, in main frame, be provided with an intensifier circuit 5, this circuit as shown in Figure 3, it adopts typical transistor amplifier, this circuit comprises amplifying triode Q1, coupling capacitance C1, C2 and resistance R 1, R2, R3, R4, wherein triode Q1 base stage is connected with transmitter 22 through coupling capacitance C1, resistance R 4, and its collector electrode is connected with receiver transmitter 12 through coupling capacitance C2, resistance R 1.As shown in Figure 3, after intensifier circuit amplifies, output to telephone receiver microphone (MIC1), send the speech of wash rice clearly by the voice signal of transmitter 22 input.

Claims

1, a kind of hand-free telephone, comprise main station (1), it is characterized in that, on main station (1), be circumscribed with miniature sending, receiver (2), this send, receiver is plugged on the socket (111) of host machine casing (11) side by lead (23) that is attached thereto and the plug (24) that is contained in wire termination, it send, receiver then places in the switch base (3) on casing top and contacts with receiver switch (31) in the switch base, and can take from switch base, casing top also is provided with one and send, receiver master switch (4) is provided with an intensifier circuit (5) that is connected with miniature transmitter (22) with receiver transmitter (12) in the main frame; Answering circuit and connecing of above-mentioned socket and main frame sent, the receiver master switch is connected in series with the receiver switch, and with the receiver switch of main frame and connect; One end of receiver switch with give, the receiver master switch is connected, the ring circuit of the other end and main frame with answer circuit and be connected; Give, the other end of receiver master switch and ring circuit with answer circuit and be connected.

2, hand-free telephone according to claim 1, it is characterized in that, describedly give, receiver (2) comprises receiver (21) and transmitter (22), wherein receiver is the ear type receiver, transmitter then is a mini microphone, both connect by lead (23), and the lead other end is equipped with plug (24).

3, hand-free telephone according to claim 2 is characterized in that, described receiver (21) and transmitter (22) can be made one.

4, hand-free telephone according to claim 1 is characterized in that, described switch base (3) is one and places the deck that receiver is used that the casing (11) in the deck is provided with receiver switch (31).

5, hand-free telephone according to claim 1, it is characterized in that, described intensifier circuit (5) comprises amplifying triode Q1, coupling capacitance C1, C2 and resistance R 1, R2, R3, R4, wherein triode Q1 base stage is connected with transmitter (22) through coupling capacitance C1, resistance R 4, and its collector electrode is connected with receiver transmitter (12) through coupling capacitance C2, resistance R 1.