CN2063904U - Car electronic flashers of turn indicators - Google Patents

Abstract

The utility model relates to a car electronic flasher. The car electronic flasher adopts a Darlington pipe as an actuating element, so the car electronic flasher has the advantages of no contacts, no sparks and long lifetime. The circuit of the utility model is provided with a short circuit protection circuit. The Darlington tube is immediately stopped until the fault is eliminated when a turning circuit generates a short circuit fault; thus, the flasher and the car circuit can be protected. When the signal sound circuit of the flasher is in normal work, the intermittent buzz sound can be sent out; when the short circuit fault happens, the continuous buzz sound can be sent out; when any lamp bulb of a turning lamp is broken, a turning indication lamp which is controlled by the flasher stops lighting, and a driver can change the lamp bulb in time. The utility model has the advantages of cabinet appearance, convenient installation and good cost performance.

Description

Car electronic flashers of turn indicators

The utility model belongs to the signals of vehicles device, is used for need such as automobile, motor bike and shows the vehicle that turns to wigwag.

Because oldfashioned adopts the electrothermic type Der Blink und Abblendschalter serviceability instability of bimetallic plate control circuit break-make, the difficult control of flash rate and current on time is so a lot of people has carried out a series of improvement to Der Blink und Abblendschalter.The electronic flasher that Shanghai Traffic Electric Equipment Factory produces is exactly wherein a kind of.This by oscillating circuit, the Der Blink und Abblendschalter that executive circuit constitutes, by oscillator signal control contact relay, make its constantly closed, disconnection, reach the constantly purpose of flicker of control steering indicating light, in order to remind the driver behind turn inside diameter, in time to turn off the light, there is the people on Der Blink und Abblendschalter, to increase news again and rings circuit, the Der Blink und Abblendschalter of producing as Hefei vehicle electric element factory is exactly this.Though this class Der Blink und Abblendschalter serviceability is more stable; function ratio is more complete; but,, lack protection because circuit layout is simple; thereby make Der Blink und Abblendschalter overload capacity poor; the fault in case the steering indicating light circuit is short-circuited, relay burns immediately, and fault also can continue to enlarge sometimes; burn insurance and circuit on the car, cause vehicle to travel.In addition, steering indicating light uses frequent, and relay is constantly closed, disconnection, and it is serious that contact is ablated, so the life-span of this class Der Blink und Abblendschalter is shorter.

The purpose of this utility model designs a kind of contact pointless exactly, and the life-span is long, has the electronic flasher of short-circuit protection function.

Feature of the present utility model is, adopts the power element of a Darlington transistor as circuit, the conducting of the oscillator signal control Darlington transistor that produces by oscillating circuit with end, reach the constantly purpose of flicker of control steering indicating light; Adopt zener diode, light lotus root silicon control, elements such as aerotron and resistance; constitute short-circuit protection circuit, when the steering indicating light circuit is short-circuited fault, Darlington transistor is ended immediately; interrupt output, the protection power element is not burnt, and protects the unlikely scaling loss of automobile circuit yet.

Accompanying drawing is circuit diagram of the present utility model and the relevant automobile circuit figure that turns to.The circuit diagram of automobile part represents that with long and short dash line wherein K1 is an ignition lock, and K2 is a turn signal swich, and power supply is an automotive battery, and the independent lamp outside four steering indicating lights is the turning indicator in the gauge panel.For ease of explanation, with dashed lines is divided into four parts with the utility model circuit diagram, is respectively 1 oscillating circuit, 2 power elements, 3 protective circuits, 4 news snap indication lamp circuits.

Describe the utility model principle of work in detail below by accompanying drawing.

By triode BG1, BG2, resistance R 1～R5 and capacitor C 1, C2 constitute multi-resonant oscillating circuit, and Darlington transistor BG3 is a power element.The output of oscillating circuit, by the base stage of resistance R 5 input Darlington transistor BG3, promptly resistance R 5 pin connects with the collecting electrode of aerotron BG2, and the another pin links to each other with the base stage of Darlington transistor BG3.The collecting electrode of Darlington transistor BG3 connects with turn signal swich K2 input pin, and emitter is connected with the negative pole of light lotus root silicon control GD luminotron in the protective circuit, connects positive source by zener diode WD again.When running car, when being ignition lock K1 closure, power connection, astable circuit starting oscillation, since the continuous conducting of oscillator signal delivery pipe BG2 with end, the base potential of BG3 also constantly changes, and at this moment, connects arbitrarily steering indicating light on one side as pole changer K2, it is the output circuit closure, then BG3 is along with the variation of base potential, constantly conducting with end, thereby steering indicating light continuous bright is put out.By to the resistance of resistance in the oscillating circuit or the adjustment of capacitance, can change resonant frequency, the cycle that change power element BG3 conducting, ends, thus steering indicating light flicker frequency and current on time changed, satisfy the related standards of steering indicating light guide number and fluorescent lifetime.

Protective circuit is made up of zener diode WD, light lotus root silicon control GD, aerotron BG4 and resistance R 6～R8.The positive pole of the positive pole of zener diode WD and light lotus root silicon control GD luminotron joins, and negative pole links to each other with positive source, and is after zener diode WD and the light lotus root silicon control GD serial connection, in parallel with resistance R 8; Light lotus root silicon control is carried out the positive pole of pipe and the base stage of aerotron BG4 is joined, negative pole is connected with resistance R 6, R7, R13, the other end power connection negative pole of resistance R 6, the other end power connection positive pole of resistance R 7, another termination thyristor of resistance R 13 is carried out the control utmost point of pipe; The emitter power connection positive pole of aerotron BG4, collecting electrode connects the base stage of Darlington transistor BG3.The principle of protective circuit is; when bearing power is in scope of design; electric current by resistance R 8 is less; the loss in voltage deficiency is so that zener diode WD puncture; the luminotron of the controlled osmanthus GD of light lotus root is not worked; aerotron BG4 is in off condition; Darlington transistor BG3 normal operation; when the steering indicating light circuit is short-circuited fault; electric current by resistance R 8 increases thereupon; the loss in voltage that produces on the resistance R 8 punctures zener diode WD, and the electric current light lotus root silicon controlled luminotron of flowing through makes it luminous, passes through photoelectric effect; silicon control is carried out and is managed conducting immediately; the base potential of aerotron BG4 decreases and conducting, high potential is added on the base stage of Darlington transistor BG3, make its immediately by and be maintained to trouble removal.The effect of resistance R 13 is to make silicon controlled execution pipe more stable, and resistance R 6 and R7 then are to carrying out suitable operating voltage of pipe.

The news snap shows the loud circuit of the news in the lamp control circuit by resistance R 9～R12, and aerotron BG5, BG6 and buzzer HTD form.When turn signal swich K2 is closed, pass through bulb, aerotron BG5, the emitter energized negative pole of BG6 and constitute the loop, news are rung circuit and are started working, aerotron BG5, the collecting electrode of the emitter of BG6 and Darlington transistor BG3 connects together, thereby, the emitter current potential along with the continuous conducting of Darlington transistor BG3 with end, constantly raise and reduce, when the emitter current potential raises, aerotron BG5, BG6 ends, and news sound circuit is not worked, otherwise, news are rung circuit working, like this, buzzer phone HTD is just along with the conducting of Darlington transistor BG3 or end--and one bright one of-steering indicating light puts out and one stops a sound, sends the signal of steering indicating light in work to the driver.When the go to circuit et out of order, Darlington transistor BG3 ends immediately, and at this moment, news are rung circuit and will be in active potential because of the emitter of aerotron BG5, BG6 always and send continuous news sound signal, remind driver's go to circuit that short trouble has taken place.

Aerotron BG7 and resistance R 14 are formed the indicator lamp control circuit, and aerotron BG7 can obtain to make the base potential of its conducting, thereby indicator lamp is glimmered along with the flicker of steering indicating light by the end of resistance R 14 in resistance R 8.When any steering indicating light damaged, the electric current of the resistance R of then flowing through 8 reduced, and therefore the base potential of aerotron BG7 raises, and causes pipe to end, and indicator lamp does not work, thereby played the effect that timely prompting driver more changes the bulb.

To be example as the automobile of power supply, provide the reference model and the parameter of the main components and parts of the utility model below with 24 volts of storage batterys.

R1 and R2 are 28～31K, and R3 is 80～85K, and R4 and R5 are 0.8～1K, R6 is 3～5K, and R7 is 1～1.5K, and R8 is 0.2～0.5 Ω, R9 is 350～400K, and R10 is 1～3K, and R11 is 0.6～0.8K, R12 is 3～5K, R13 is 28～30K, and R14 is 0.8～1K, and C1 is 20～30 υ f/50V, C2 is 5～10 υ f/50V, the model of aerotron is BG1, BG2 and BG4 are GD351B, and BG5 and BG6 are 3DG27A, BG7 is 3CG23D, BG3 is BD650, zener diode, and WD adopts the 2CW series of products, diode D adopts the 2CP series of products, and light lotus root silicon control model is TIP545H.

The utility model is not owing to use the contact relay, thereby the flasher no-spark, and the life-span is long; performance is more stable; flasher itself has not only been protected in the setting of short-circuit protection circuit, has also protected automobile circuit; thereby make travelling of vehicle more safe and reliable; the utility model outward appearance is small and exquisite, and is easy for installation, also has the preferably ratio of performance to price; information ring and indicator lamp can provide multi-signal, bring many convenience to the driver.

Claims (2)

1, a kind of electronic flasher of automobile of being made up of circuit such as vibration, news sound is characterized in that:

A, by aerotron BG1, BG2; resistance R 1～R5; the mouth of the multi-resonant oscillating circuit (1) that capacitor C 1, C2 constitute; it is the collecting electrode of aerotron BG2; link to each other with power element (3) Darlington transistor BG3 base stage by resistance R 5, the current collection collection of BG3 links to each other with flasher K switch 2; the BG3 emitter links to each other with the negative pole of light lotus root silicon control GD luminotron in the protective circuit (2).

B, by zener diode WD, light lotus root silicon control GD, aerotron BG4 and resistance R 6～R8 constitute protective circuit (2).

2, by the described electronic flasher of automobile of claim 1, it is characterized in that, described protective circuit connection mode is, the positive pole of zener diode WD links to each other with the positive pole of the luminotron of light lotus root silicon control GD, and negative pole links to each other with positive source, the negative pole of light lotus root silicon control luminotron, link to each other with the emitter of Darlington transistor BG3, after zener diode and the light lotus root silicon control serial connection, in parallel with resistance R 8; The positive pole of the execution pipe of light lotus root silicon control GD, join with the base stage of aerotron BG4, negative pole and resistance R 6, R7, R13 join, the other end power connection negative pole of resistance R 6, the other end power connection positive pole of resistance R 7, another termination silicon control of resistance R 13 is carried out the control utmost point of pipe; The emitter of aerotron BG4 links to each other with positive source, and the base stage of collecting electrode and Darlington transistor links to each other.