CN2130272Y - Power-supply stabilizer for headlight of mini-size motor-driven vehicle - Google Patents

Abstract

The utility model discloses a stabilizer for power supply to the lamp of a small-sized vehicle, relating to the technical field of voltage regulation, which comprises a divided circuit, a triggering circuit, and a sample taking resistor; the divided circuit is connected between the voltage output end of a permanent magnet alternator and the ground end, and is formed by a bidirectional controlled silicon and a resistor; the triggering circuit is connected to the triggering electrode of the bidirectional controlled silicon, and is formed by the resistor and a capacitance; the sample taking resistor is connected with the resistor of the triggering circuit, and is also connected with a lamp and a controlling switch. The utility model can make the power supply voltage of the lamp improve, and the brightness of the lamp increase under the condition of same low vehicle speed.

Description

Power-supply stabilizer for headlight of mini-size motor-driven vehicle

The utility model relates to the regulation voltage technical field.

Cyclecars such as tractor with small four wheels, hand tractor, agricultural tricycle, owing to simple in structure, maneuverability, low price receive praises from customers, but aspect electric system, adopt the power supply of magneto alternator as night illumination, when being uneven or taking a sudden turn, road narrows presses for when illumination, cyclecar is too low because of the low speed driving lighting brightness, parking in a single day is just as dark as a stack of black cats, and traffic hazard very easily takes place.The patent No. is 90225124.3 " the full-automatic charging and feeding device of tractor with small four wheels ", it is to be connected to the bridge-type main converter and bridge-type is paid rectifier on the phase line of magneto alternator, the output terminal of bridge-type main converter is parallel with car light, accumulator and sample resistance, the output terminal that bridge-type is paid rectifier is connected to voltage-regulating circuit, lighting brightness was too low when this patent had solved low speed driving, a difficult problem as dark as a stack of black cats during parking, but owing on the bridge-type main converter pressure drop is arranged, cause the supply voltage of car light under same low vehicle speed condition low, the brightness of illuminating lamp is gloomy, do not reach the requirement of traffic safety, also because three road laod unbalances of magneto alternator, cause the rotor demagnetization of magneto alternator, shorten serviceable life.

To be that design is a kind of improve the brightness of car light and do not shorten the magneto alternator cyclecar car light power supply voltage stabilizer in serviceable life the purpose of this utility model under same low vehicle speed condition.

This voltage stabilizer comprises and is connected on the divided circuit that is made of bidirectional triode thyristor and resistance between magneto alternator voltage output end and the ground end, be connected on the trigger circuit that constitute by resistance, electric capacity on this bidirectional triode thyristor trigger electrode, be connected to sample resistance on the electric capacity other end ground connection of these trigger circuit, the resistance other end, the other end of sample resistance is connected with gauge tap with car light.

After this car light power supply voltage stabilizer is installed on the cyclecar, because car light directly is connected on the voltage output end of magneto alternator by its gauge tap, removed the bridge-type main converter, droop loss about the 2V that has avoided on this bridge-type main converter, producing, thereby make the supply voltage of car light under same low speed situation correspondingly improve identical numerical value, the brightness of car light is increased.Magneto alternator for single-phase three tunnel outputs, during installation three road output-parallels are used, magneto alternator for two-phase output, during installation two-phase is used in neutral point series connection back, the above-mentioned imbalance that does not either way exist load to distribute, thereby the rotor of magneto alternator is demagnetized, do not shorten its serviceable life.

Accompanying drawing shows the embodiment of cyclecar car light power supply voltage stabilizer, wherein

Fig. 1 is the electrical schematic diagram of embodiment;

Fig. 2 is the car light power supply electrical schematic diagram that is fitted in the cyclecar that uses single-phase No. three magneto alternators;

Fig. 3 is the car light power supply electrical schematic diagram that is fitted in the cyclecar that uses the two phase permanent magnet alternator.

In the present embodiment, cyclecar car light power supply voltage stabilizer comprises between being connected on magneto alternator M voltage output end holds with ground by bidirectional triode thyristor D ₁And resistance R ₁, R ₂The divided circuit (1) that constitutes is at bidirectional triode thyristor D ₁Trigger electrode on be connected to by resistance R ₃Constitute with capacitor C, and by two light emitting diode D of reverse parallel connection ₂And D ₃With bidirectional triode thyristor D ₁The trigger circuit (2) that connect of trigger electrode,, in order to adjust bidirectional triode thyristor D ₁Conduction angle, and then control divided circuit (1) the shunting size, resistance R ₃Be a potentiometer, the other end ground connection of capacitor C, resistance R ₃The other end on be connected to sample resistance (3), sample resistance (3) is by resistance R ₄, R ₅, R ₆, R ₇Constitute, the other end of sample resistance (3) is connected with gauge tap with car light, wherein R ₄With headlight H ₇, H ₆With gauge tap K ₃Connect R ₅With brake back light H ₅, H ₆With brake switch K ₂Connect R ₆And R ₇Respectively with left front rear directional H ₁, H ₂, right front rear directional H ₃H ₄And their gauge tap K ₁Connect K ₁J connects with flashing relay.

When the car light on the cyclecar does not need illumination or brake, turns to when indication, sample resistance (3) is gone up no current, D ₁End, do not shunt.When braking, turning to or throwing light on, the car light two ends produce pressure drop, and this pressure drop produces flows through sample resistance (3), R ₃Electric current charge to C, after the voltage at C two ends is elevated to certain numerical value, D ₁Conducting, begin the shunting and by D ₂, D ₃Luminous indication, the voltage at shunting back restriction car light two ends continues to raise.Owing to set up divided circuit (1), the high more shunting of the speed of a motor vehicle is many more, does not shunt when the speed of a motor vehicle is low, and the Control of Voltage at car light two ends has avoided car light to be burnt out because of excess current on certain value.

In the present embodiment, main components and parts are selected as follows:

M SFF-45 type or YJF ₂-90 types

D ₁BCR3AM

Claims (2)

1, a kind of cyclecar car light power supply voltage stabilizer, it is characterized in that comprising and be connected on the divided circuit (1) that constitutes by bidirectional triode thyristor and resistance between magneto alternator voltage output end and the ground end, be connected on the trigger circuit (2) that constitute by resistance, electric capacity on this bidirectional triode thyristor trigger electrode, be connected to sample resistance (3) on the electric capacity other end ground connection of these trigger circuit, the resistance other end, the other end of sample resistance (3) is connected with gauge tap with car light.

2, according to the described cyclecar car light power supply of claim 1 voltage stabilizer, it is characterized in that trigger circuit (2) are connected with the The Trigger of Bidirectional Triode Thyristor electrode by two light emitting diodes of reverse parallel connection.

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