CN2148700Y

CN2148700Y - Electronic flasher for vehicle

Info

Publication number: CN2148700Y
Application number: CN 93204761
Authority: CN
Inventors: 方廷寿
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-02-22
Filing date: 1993-02-22
Publication date: 1993-12-08
Anticipated expiration: 2003-02-22

Abstract

The utility model relates to a dynamic potential type electronic flasher for an automobile which comprises a dynamic potential circuit, an integrating circuit and a drive circuit. When the utility model is adopted, the stable flicker frequency of turning light of the automobile can be realized. The utility model has the characteristics of simple circuit, reliable work and low cost. The dynamic potential type electronic flasher for an automobile is mainly suitable for the turning of the automobile.

Description

Electronic flasher for vehicle

The utility model is the electronic flash equipment that uses about flasher.

Along with developing of automobile industry, the car electrics electronization has become a megatrend, and the electronic flasher of prior art replaces traditional contact type Der Blink und Abblendschalter gradually.The electronic flasher of prior art, mostly adopt alloy resistance wire to seal in the load major loop and do dynamic load, electronic flasher with Otto (AITO) car, Chang'an minicar is an example, domestic production producer is representative with Shen, the Shanghai City SG152B type electronic flasher that electrical apparatus factory produces that shakes, this Der Blink und Abblendschalter one big disadvantage is exactly that flasher must use the certain power bulb, if steering indicating light power changes little or when damaging one, flash rate becomes and is exceedingly fast, frequency stability is poor.And the electronic flasher that Japan OMRON is made, flash rate is more stable, but the prior art adopts the special-purpose vibration of its our company's design-calculated integrated package, and complex circuit uses element many, and cost is too high.The electronic flasher of prior art exists inevitable shortcoming, and the one, alloy resistance wire seals in the load major loop and the heat dissipation problem that generates heat and cause; The 2nd, flash rate becomes with load, the problem of frequency stability difference.

The purpose of this utility model is to provide a kind of frequency stabilization, reliable operation, cheap electronic flasher for automobile.

Main points of the present utility model are: adopt dynamic current potential to do not have steady vibration, flash rate and load are irrelevant; Major loop non-resistance silk has thoroughly solved heating problem.

Below in conjunction with accompanying drawing, the utility model is described in detail.

Fig. 1 is an electrical schematic diagram of the present utility model, also is one embodiment of the present of invention.Fig. 2 is the figure of explanation electric capacity charging principle.Fig. 3 is the figure of explanation capacitive strike principle.

Among Fig. 1, aerotron V ₁, resistance R ₁, R ₂, relay normally open contact KJ forms dynamic potential circuit; Resistance R ₃, capacitor C is formed integrating circuit; Aerotron V ₂, resistance R ₄, R ₅, relay K is formed driving circuit.When not connecing load (bulb) between face terminals L and terminals for power supplies E, aerotron V ₁, V ₂The equal no current of base stage to power supply negative terminal, so V ₁, V ₂All end, entire circuit is not worked.After the L end is gone into load with the E termination, aerotron V ₂Base current through resistance R ₄, load resistor R ₀Flow into power-terminal E, V ₂Saturated, the relay K adhesive, contact KJ closure, load gets electric and bright, aerotron V ₁Because its base resistance R ₁Be connected to power positive end and end V ₁Collecting electrode H point current potential is zero, and this moment, entire circuit can be reduced to Fig. 2.Aerotron V ₂Base current through capacitor C, resistance R ₃, R ₂To power supply negative terminal, V ₂Continue conducting, relay K keeps attracting state, and capacitor C is charged gradually, and capacitor C anode F point current potential rises gradually, and this is process of charging.

When capacitor C anode F point current potential is charged to V _DDIn the time of-0.7 volt, aerotron V ₂End, relay K discharges, and contact KJ disconnects, and the load dead electricity is extinguished, and process of charging finishes.Aerotron V ₁Base current through resistance R ₁, load resistor R ₀To power-terminal E, aerotron V ₁Saturated, V ₁Collecting electrode H point current potential becomes high potential V _DD, this moment, entire circuit can be simplified to Fig. 3.The jump in potential of capacitor C anode F point is 2V _DD-0.7 volt, aerotron V ₂Continuation ends, and capacitor C is leaded up to resistance R ₅To power positive end B discharge, lead up to resistance R ₄, load resistor R ₀To power supply negative terminal E discharge, F point current potential descends gradually, and this is discharge process.

When capacitor C anode F point fall of potential to V _DDIn the time of-0.7 volt, discharge process finishes, aerotron V ₂Conducting, the relay K adhesive, contact KJ closure, load gets electric and bright, and three gradually manage V ₁End, the H point is the vanishing current potential again, and capacitor C anode F point current potential is jumped and reduced to-0.7 volt, again from multiple aforementioned process of charging.

This shows that electric capacity process of charging H point current potential is a zero level, capacitive strike process H point current potential is a high potential, and oscillation frequency is only relevant with circuit element parameter, and irrelevant with load.(because of load resistor R ₀Only be several ohm, much smaller than resistance R ₁, R ₄Resistance, can ignore its influence.）

The utility model has been realized the function that flashing rate is stable, also has reliable operation, circuit characteristics simple, with low cost.

Claims

Dynamic electric potential type automobile flasher, by dynamic potential circuit, integrating circuit and driving circuit are formed, and wherein, dynamically potential circuit is by aerotron V ₁, resistance R ₁, R ₂, relay normally open contact KJ constitutes, and integrating circuit is by resistance R ₃, capacitor C constitutes, and driving circuit is by aerotron V ₂, resistance R ₄, R ₅, relay K constitutes, and it is characterized in that:

Dynamically potential circuit is by aerotron V ₁, resistance R ₁, R ₂, relay normally open contact KJ constitutes, and relay normally open contact KJ one end connects sub-B of power positive end and aerotron V simultaneously ₁Emitter, the KJ other end connects face terminals L and resistance R simultaneously ₁One end, resistance R ₁The other end connects aerotron V ₁Base stage, V ₁Emitter connects resistance R simultaneously ₂, R ₃An end, resistance R ₂The other end connects power-terminal E.