CN2455539Y - Mobile telephone receiver on board - Google Patents

Abstract

The utility model discloses an automobile mobile phone answering device. It consists of a counter circuit, a phase-lock circuit, a reset circuit, an electronic switch circuit, and a power supply circuit. One of the two input ends of the electronic switch circuit is connected with the audio signal contact point of the mobile phone, and the other is connected with the preamplification circuit of the car audio player, and the output end of the electronic switch circuit is connected with the rear effect circuit of the car audio player. The utility model utilizes the existing car sound player and the microphone of the mobile phone to answer the mobile phone while driving, and avoids traffic accidents caused by holding the mobile phone and driving with one hand while driving.

Description

The Automobile handset connecting device

The utility model relates to a kind of electrical installation that is used for answering cell phone in the automobile.

Along with developing rapidly of mobile communication, automobile driver answering cell phone in the process of moving is increasing.Because chaufeur is got only when answering cell phone and is held bearing circle and sail car, the machine of shaking hands is answered on the other hand, so traffic accident easily takes place, influence traffic safety, therefore, the traffic law in some countries and city is clearly stipulated, Yi Bian forbid driving, phone with mobile telephone on one side, answering cell phone causes traffic accident when avoiding sailing car.

The purpose of this utility model provides a kind of, utilize existing automobile cassette player and mobile phone microphone, can sail car on one side, one side is answering cell phone easily, handheld mobile phone when avoiding sailing car, one hand drives to cause traffic accident, and does not also influence the Automobile handset connecting device of listening to automobile cassette player broadcast program in the front and back of answering cell phone.

The utility model is by counter circuit 1, phase lock circuitry 2, reset circuit 3, electronic switching circuit 4 and power circuit 5 are formed, the mouth of counting circuit 1 links to each other with the input end of phase lock circuitry 2, the mouth of reset circuit 3 also links to each other with the input end of phase lock circuitry 2, the mouth of phase lock circuitry 2 links to each other with the control end of electronic switching circuit 4, two input ends of electronic switching circuit 4, one links to each other with the sound signal contact 6 of mobile phone, another links to each other with automobile cassette player pre-amplification circuit 8, the mouth of electronic switching circuit 4 links to each other with the moving discharge of the postposition road 7 of automobile cassette player, and the mouth of power circuit 5 links to each other with above-mentioned each circuit through reset circuit 3.

The utility model is when no telephone state, and the input end of electronic switching circuit is connected the pre-amplification circuit of automobile cassette player, can play the program in the automobile cassette player.When phone, cut-out is connected with automobile cassette player pre-amplification circuit, and another input end of electronic switching circuit is connected with the handset audio signal source, enter the mobile phone communication state, link to each other with the rearmounted power amplifier of automobile cassette player owing to mouth of the present utility model again, the sound of the other side's phone can be emitted by automobile cassette player loudspeaker, the phone answer can be imported with power circuit bonded assembly microtelephone by being clipped on the clothes, realization need not handheld mobile phone can answer electric living, behind the end of conversation, the input end of electronic switching circuit recloses, and recovers the automobile cassette player and plays.Handheld mobile phone conversation when the utility model can be avoided sailing car, one hand is sailed car, causes traffic accident.

Accompanying drawing 1 is the utility model circuit connection diagram:

Accompanying drawing 2 is the utility model embodiment circuit diagram.

Among the figure: 1-counter circuit, 2-phase lock circuitry, 3-reset circuit, 4-electronic switching circuit, 5-power circuit, 6-handset audio signal contact, the rearmounted power amplifier of 7-automobile cassette player, 8-automobile cassette player pre-amplification circuit, 9-mobile phone microtelephone mouth.

Further describe the utility model below in conjunction with drawings and Examples.

Referring to accompanying drawing 2, counter circuit 1 of the present utility model is by IC1 optocoupler 4n25, IC2 counting machine CD4017 and capacitor C 1, adjustable resistance R, diode D forms, phase lock circuitry 2 is made of IC3 double D trigger CD4013, reset circuit 3 is by touch switch SK1, resistance R 4, R5 and light-emitting diode D2 form, and electronic switching circuit 4 is IC4 alternative electronic switch TC4053, and power circuit 5 is made of IC5 voltage stabilizer 7809 and filter circuit C4.

Claims (2)

1. A car mobile phone answering device composed of a counter circuit (1), a phase-lock circuit (2), a reset circuit (3), an electronic switch circuit (4) and a power supply circuit (5), characterized in that the counter circuit (1 ) output end is connected with the input end of the phase-lock circuit (2), the output end of the reset circuit (3) is also connected with the input end of the phase-lock circuit (2), and the output end of the phase-lock circuit (2) is connected with the electronic switch circuit The control end of (4) is connected, two input ends of electronic switch circuit (4), one is connected with the audio signal contact point (6) of mobile phone, and the other is connected with car audio player preamp circuit (8), and electronic switch The output terminal of the circuit (4) is connected with the rear power amplifier circuit (7) of the car audio player, and the output terminal of the power supply circuit (5) is connected with the above-mentioned various circuits through the reset circuit (3). 2. The car phone answering device according to claim 1, characterized in that said counter circuit (1) is composed of IC1 photocoupler 4N25, IC2 counter CD4017, capacitor C1, adjustable resistor R, and diode D, phase-locked The circuit (2) is composed of IC3 double D flip-flop CD4013, the reset circuit (3) is composed of light-touch switch SK1, resistors R4, R5 and light-emitting diode D2, and the electronic switch circuit (4) is IC4 two-choice electronic switch TC4053, The power supply circuit (5) is composed of IC5 regulator 7809 and filter circuit C4.

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