CN2485882Y

CN2485882Y - Automatic speaker telephone controlled by turning over cover

Info

Publication number: CN2485882Y
Application number: CN 01240670
Authority: CN
Inventors: 廖展忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-05-30
Filing date: 2001-05-30
Publication date: 2002-04-10
Anticipated expiration: 2011-05-30

Abstract

An automatic speaker telephone controlled by turning over cover comprises all conponents of the prior dust-prevention speaker telephone. The utility model is characterized in that: a set of hand-free control switch circuit controlled by the locking button of the turning cover is added in the control circuit of the telephone. The telephone is scientific in design, reasonable and simple in structure and convenient in operation; calling and the answering of the telephone are both convenient, only one press on the key of OPNE, the handfree is communicated during the cover is turning, so that the user has no need to press on the handfree to answer the telephone; when the call is completed, the handfree is automatically shut off as long as the dustproof cover is put back in the original place. The application method and habit of the user with the automatic speaker telephone are as simple and convenient as with other common telephones.

Description

Renovate automatic control hand-free telephone

The utility model relates to telephone structure and improve, especially a kind ofly renovate automatic control hand-free telephone.

At present, market upturning lid phone (claiming dustproof phone again) is because the design of its unique appearance, the phone idea that breaks traditions, good dustproof effect and receive user's favor greatly, each telephone set manufacturer is numerous and confused to release flip phone miscellaneous, but there are shortcomings such as operation repeats in this phone.When wanting with hands-free making a phone call, will click " OPEN " button earlier opens dust cap (because telephone key-press is below dust cap, then can't make a phone call as not opening dust cap), clicking Hands-free key again starts and just can call after hands-free, on the contrary, the user is if also wanting when wanting with hands-free receiving calls earlier to open by " OPEN " button clicks Hands-free key again behind the dust cap and could connect phone, after having made a call the user also need close the phone dust cap that just can close by Hands-free key.Close the hands-free dust cap that just closes if the user forgets after having made a call, then the number of the in running order always and outside of telephone set does not just forever advance, and brings great inconvenience to the user.

The purpose of this utility model is the deficiency that exists at above-mentioned dustproof flip phone, provides renovating of a kind of operating process capable of reducing using automatic control hand-free telephone.

The utility model is renovated automatic control hand-free telephone, comprise: all mechanisms of existing dustproof flip phone, it is characterized in that: increase by one group of hands-free control switch circuit of renovating tab control of forming by circuit state testing circuit, signal processing circuit and executive circuit three parts on the telephone control circuit, the power end of this circuit is connected with telephone set battery anode, the HKS end is connected with the starting pin (HKS) of telephone set dialing integrated package, the A94.C end is connected with the collector electrode of telephone power switching tube, and the two ends of executive circuit connect hands-free keypad two ends respectively.

The design principle that the utility model is renovated automatic control hand-free telephone is: utilize and control the mechanism of hands-free control switch circuit folding by renovating tab, the realization telephone set is renovated the hands-free function of use of automatic control.Promptly detect the action of telephone set dust cover and just send control level to treatment circuit by state detection circuit, treatment circuit is converted to pulse to it, and judge phone at present whether off-hook or handle determining whether that this pulse is sent to executive circuit, executive circuit receive this pulse just produce connect Hands-free key action to reach the control purpose.

The utility model is renovated automatic control hand-free telephone design science, and is rational in infrastructure, simple, easy to operate, the user calls or receives calls very convenient, only need click " OPEN " key, connection is hands-free automatically when renovating, and the user need not to connect phone by Hands-free key again; User after having made a call is as long as press reposition with dust cap, and phone also cuts out hands-free automatically.User's using method is the same with other plain old telephone with custom simple, convenient.Have practical, advantage such as result of use is good.

The concrete structure that the utility model is renovated automatic control hand-free telephone is provided in detail by the following drawings and embodiment.

Fig. 1 is the hands-free control switch circuit diagram that telephone set is renovated tab control.

Embodiment: renovate the contour structures of automatic control hand-free telephone and internal structure and existing to renovate dustproof telephone set basic identical, its difference structure is, on telephone control circuit, increase by one group by the hands-free control switch circuit (shown in Figure 1) of renovating tab control, renovate the hands-free control switch circuit of tab control and form by circuit state testing circuit 1, signal processing circuit 2 and executive circuit 3 three parts.

State detection circuit 1 comprises: energising testing circuit that is made of resistance R 6, R8, R7, diode D3, capacitor C 3 and the cover plate folding condition testing circuit that is made of diode D8, resistance R 4, R7 and capacitor C 3, this circuit are provided with the phone energising and detect and handle off-hook detection end HKS and dust cover switch HOOK.R6 in the circuit is a pull down resistor, R4, R7, R8 constitute bleeder circuit with the different incoming level of balanced two-way amplitude, D3, D8 are used to avoid two-way control to influence each other, C3 is a delay capacitor, to prevent false triggering, dust cover switch HOOK is used for telephone set dust cover folding condition and detects the time constant of it and R7 much larger than the transit time of cover plate switch moving plate.

Signal processing circuit 2 comprises: pulse shaping circuit that is made of resistance R 2, R3, R5, capacitor C 2, C1, diode D1, D7 and the three input AND logic circuits that are made of diode D2, D4, D5, resistance R 1.C1, C2 and R5 constitute high level that differential circuit order HOOK switch A point or B in the required enough wide pulse of D point formation triggering Hands-free key, R2, R3, D7 provide discharge path for C1, C2, D1 influences pulse duration setting for avoiding state detection circuit, the three input AND logic circuits that D2, D4, D5, R1 constitute are only when three diode cathodes are high level, the E end just has high level, and whenever the E point is low level for other.

Executive circuit 3 is made up of diode D6, resistance R 9, triode Q1, and D6 is used for step-down (E point low level is 0.5V, can not reach 0V), R9 is a pull down resistor, D6 and R9 can make Q1 effectively end when the E end is low level, and Q1 is the NPN triode, just conducting when base stage reaches 0.7V voltage.By the hands-free control switch circuit of renovating tab control+the 4.5V termination goes into the battery anode of telephone set, the starting pin (HKS) of HKS termination telephone set dialing integrated package, the collector electrode of A94.C termination telephone power switching tube, R5 end and C4 end connect hands-free keypad two ends respectively.Described dust cover switch HOOK adopts switch hook or contact switch.

Renovate the normal 5 kinds of control principles that use of automatic control hand-free telephone and the course of work:

1, close when covering state when phone is in on-hook, phone start end HKS is a high level, and power supply switch tube A94 current collection is low level very, cover plate switch is placed in the He Gai position simultaneously, and F point and B point are connected, so the B point is a high level, then D8 conducting, D3 ends, and the C point is a high level.The D point voltage is about (R5 with after R9 is in parallel with R1 dividing potential drop) 0.24V, and then the E point voltage is 0.74V, so D4, D5 oppositely end, Q1 can not conducting after 0.5V falls in D6 for the E point voltage.

2, when making a phone call, dust cap is opened, cover plate switch is placed in the position of uncapping, the F point is by B point reconfiguration A point, then the B point is a low level, the C point can keep high level about about 400ms because of the existence of C3, the A point is put behind the high level at the D point produces effective differential high level spike about 100ms, because HKS and C point all are high level, then the E end is also exported a high level pulse about 100ms and is made the Q1 conducting, connect approximately about Hands-free key 100ms, the hands-free off-hook of telephone set, power supply switch tube A94 conducting, A94 collector electrode output high level passes through D3, R8 keeps the high level that C is ordered, simultaneously institute passes through R3 towards voltage to C2 when covering state closing, the D7 discharge is for hook state is after a while prepared.

3, work as talk-through, cover plate closes, cover plate switch is placed the He Gai position again, the F point takes back the B point by the A point, because C2 is identical with the C1 connection, the differential high level spike that also obtains about 100ms at the E point is connected Q1, and then telephone set is hung up by hands-free, and capacitor C 1 is prepared for uncap next time by R2, D7 discharge simultaneously.

If 4 only want to look at displaying contents (for example time or caller ID etc.), and don't be to make a phone call, then the Hands-free key that need click on the phone after opening dust cap is hung up phone, this moment, power supply switch tube A94 collector electrode became low level, and this moment, the F point connect the A point, so the B point is a low level, then C3 will discharge by R7, and the C point becomes low level after 400ms; Finish when checking, though the D point also obtains the effective high level of 100ms when covering dust cap, because the C point must just can rise to effective high level to the about 100ms of C3 charging through R4, because the clamping action of D5, the E level point can not change, and covers Q1 and can not move so close this moment.Certainly also can not trigger hands-freely, it is constant to finish watching on the bonnet dust cap telephone set operating state.

5, pluck handle under any state, the HKS end becomes low level, makes the E end keep low level by the D4 clamper, makes the dust cover switch failure so Q1 can not connect under this state.

Claims

1, a kind ofly renovates automatic control hand-free telephone, comprise: all mechanisms of existing dustproof flip phone, it is characterized in that: increase by one group of hands-free control switch circuit of renovating tab control of forming by circuit state testing circuit 1, signal processing circuit 2 and executive circuit 3 three parts on the telephone control circuit, the power end of this circuit is connected with telephone set battery anode, the HKS end is connected with the starting pin (HKS) of telephone set dialing integrated package, the A94.C end is connected with the collector electrode of telephone power switching tube, and the two ends of executive circuit connect hands-free keypad two ends respectively.

2, according to claim 1ly renovate automatic control hand-free telephone, it is characterized in that: state detection circuit 1 comprises: energising testing circuit that is made of resistance R 6, R8, R7, diode D3, capacitor C 3 and cover plate folding condition testing circuit and the dust cover switch HOOK that is made of diode D8, resistance R 4, R7 and capacitor C 3.

3, according to claim 1 and 2ly renovate automatic control hand-free telephone, it is characterized in that: signal processing circuit 2 comprises: pulse shaping circuit that is made of resistance R 2, R3, R5, capacitor C 2, C1, diode D1, D7 and the three input AND logic circuits that are made of diode D2, D4, D5, resistance R 1.

4, according to claim 1 and 2ly renovate automatic control hand-free telephone, it is characterized in that: executive circuit 3 is made up of diode D6, resistance R 9, triode Q1.

5, according to claim 3ly renovate automatic control hand-free telephone, it is characterized in that: executive circuit 3 is made up of diode D6, resistance R 9, triode Q1.

6, according to claim 1 and 2ly renovate automatic control hand-free telephone, it is characterized in that: dust cover switch HOOK is switch hook or contact switch.