CN2157079Y - Double-end solid state flash relay - Google Patents

Abstract

The utility model relates to a double-end solid state flash relay which is connected with the flash bulb in series to use, and the utility model is basically not affected by the environment condition; when working normally, the frequent flash of the luminous diode (D < 2 >) on the relay and the luminous diode is synchronous with the flash lamp; when one or two filament of the flash bulb is broken, the luminous diode (D < 2 >) on the relay is not alight; when the flash bulb is short-circuited, the frequent flash of the luminous diode (D < 2 >) on the relay is obviously quickened, compared with normal frequent flash; both the open-circuit and the short-circuit of the load can not damage the double-end solid state flash relay, and the relay can continuously to work normally after the fault is removed. The double-end solid state flash relay which has small volume can also be combined with a steering switch into a flash relay assembly.

Description

Double-end solid state flash relay

The utility model is a kind of two connection terminals that have only, the solid-state flasher relay of connecting with load and using.Be mainly used in the steering indicating light flash of light indication and control of self-propelled vehicle.

The turning flash indication of existing self-propelled vehicle is by relay control.Stipulated flash rate in its technical requirements and when load bulb open circuit or short circuit, the frequency control of relay will have obvious variation, or or kept burning day and night, or long putting out, otherwise flash rate change than normal frequency will be more than one times.Existing flasher relay has two kinds substantially.A kind of is the hot wire type, and another kind is that a special IC is controlled a contact relay.These two kinds of flasher relays all have distinct disadvantage: (one) is unable to undergo fatigue life test; (2) easily affected by environment; (3) during load short circuits, relay itself, automotive wire bundle are so that storage battery is impaired serious.

The purpose of this utility model is to adopt a little electrons element, forms one and has only two connection terminals, the solid-state flasher relay of connecting with load and using.Its key technical indexes still has following advantage except that meeting the engineering factor of Der Blink und Abblendschalter own: (one) load open circuit, short circuit relay, wire harness, storage battery can not damage, and no matter how long short circuit opens a way, trouble removal, and relay is normal operation still.(2) affected by environment minimum, or say and be not subjected to environmental influence substantially.(3) than three end flasher relays, save a wire harness, reduce auto cost.(4) can be combined into one with pole changer, become the Der Blink und Abblendschalter assembly.

Accompanying drawing 1 is an electrical schematic diagram of the present utility model.Accompanying drawing 2 is to use tie lines figure, and (1) is the solid-state flasher relays in two ends among Fig. 2, and (2) are flash lights.Fig. 1 (D ₁) be that rectification oppositely cuts off diode, (C with positive charge ₁) be that energy-storage capacitor, (IC) are the self-oscillatory integrated circuit of energy, (BG ₁) be master power switch aerotron, (R ₁) be (BG ₁) base stage current-limiting resistance, (R ₂) be (BG ₁) emitter resistance, radical function is the sampling voltage that produces signal aspect and indication according to the main switch electric current, (BG ₂) be the direction switch signal aerotron, (D ₂) be that work shows light-emitting diode, (R ₃) be current-limiting resistance, it is characterized in that rectifier diode (D ₁) negative terminal and energy storage chemical capacitor (C ₁) anode, light-emitting diode (D ₂) anode is through resistance (R ₃) tie in one rectifier diode (D ₁) anode, power switch transistor (BG ₁) collector junction in one, energy storage chemical capacitor (C ₁) negative terminal and oscillating integrated circuit negative terminal, power switch transistor (BG ₁) emitter-base bandgap grading is through resistance (R ₂) lower end and aerotron (BG ₂) emitter-base bandgap grading tie in one, the output of oscillating integrated circuit (IC) is through resistance (R ₁) in aerotron (BG ₁) base stage link to each other aerotron (BG ₂) collecting electrode and diode (D ₂) negative terminal link to each other.Its working process is, at the beginning of circuit is connected, because (C ₁) nothing is electric, (IC) can not work (BG ₁) being in off condition, this moment, power supply was by (D ₁) to (C ₁) charging, treat (C ₁) be charged to a certain degree, (IC) start working, be in when high-end (BG to (IC) output ₁) conducting, blinker bulb is luminous.Because (D ₁) to (C ₁) be in anti-state partially, (C ₁) discharge only keep the work of (IC), can not be through (BG ₁) discharge, export when being in low side (BG to (IC) ₁) end again, power supply is again by (D ₁) to (C ₁) charging, so circulation, then bulb promptly is in one bright one flash state that goes out.

Design (R ₂) when value makes two bulbs bright, (R ₂) pressure drop of going up is greater than 0.7V, like this, (BG) conducting.When blinker bulb is bright, (BG ₂) also conducting, light-emitting diode (D ₂) bright.Light-emitting diode (D when blinker bulb extinguishes ₂) also do not work.Flash light and light-emitting diode (D ₂) flash rate is synchronous.

When if blinker bulb damages one, (R ₂) go up pressure drop less than 0.7V, (BG at this moment ₂) can not conducting, light-emitting diode does not work.If light-emitting diode does not work after the energized in other words, then be that one or two blinker bulb has broken certainly.

If circuit " bonding ", i.e. flash light short circuit, then (BG ₁) the collector current rising, corresponding base current also rises.Because (BG ₁) base flow is from (C ₁), and (C ₁) capacity be limited, i.e. (C ₁) the velocity of discharge accelerate (BG ₄) by quickening, the flash rate that shows on light-emitting diode is accelerated, and suitably determines component parameters, then by light-emitting diode (D ₂) frequency show to accelerate and can learn: blinker bulb short circuit, fault need in time to handle.Also know at this point: though load short circuits, because (BG ₁) base flow is limited, (BG ₁) also can not damage.

Summarize this relay working process: connect turn signal swich, normal if the light-emitting diode stroboscopic on the relay shows, prove that then the flash light of automobile shows normal; If light-emitting diode does not work, prove that then circuit is not connected or a blinker bulb filament has broken, perhaps two light bulb filaments are disconnected entirely; If the light-emitting diode stroboscopic is obviously accelerated, then prove the circuit bonding, the automobile blinker bulb does not work and should repair immediately.

Claims (1)

1, the solid-state flasher relay in a kind of two ends comprises rectifier diode (D ₁), energy storage chemical capacitor (C ₁), light-emitting diode (D ₂), power switch transistor (BG ₁), oscillating integrated circuit (IC) and aerotron (BG ₂) and resistance (R ₁, R ₂, R ₃), it is characterized in that rectifier diode (D ₁) negative terminal and energy storage chemical capacitor (C ₁) anode, light-emitting diode (D ₂) anode is through resistance (R ₃) tie in one rectifier diode (D ₁) anode, power switch transistor (BG ₁) collector junction in one, energy storage chemical capacitor (C ₁) negative terminal and oscillating integrated circuit (IC) negative terminal, power switch transistor (BG ₁) emitter-base bandgap grading is through resistance (R ₂) lower end and aerotron (BG _z) emitter-base bandgap grading tie in one, the mouth of oscillating integrated circuit (IC) is through resistance (R ₁) in aerotron (BG ₁) base stage link to each other aerotron (BG ₂) collecting electrode and diode (D ₂) negative terminal link to each other.

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