CN2300971Y

CN2300971Y - Contactless car electric horn controller

Info

Publication number: CN2300971Y
Application number: CN 96229766
Authority: CN
Inventors: 龚国馨
Original assignee: Individual
Current assignee: Gong Guoxin
Priority date: 1996-04-29
Filing date: 1996-04-29
Publication date: 1998-12-16
Anticipated expiration: 2006-04-29

Abstract

The utility model relates to a contactless car electric horn controller. The utility model is characterized in that after signals which past an oscillation generator are amplified by a level shifter phase inverter; an electric horn coil is driven by the output stage of voltage controlled power to realize electronic contactless control to sounds of car electric horns and eliminate platinum contact switches used in a conventional mechanical electric horn of mechanical contact point type and extends electric horn life. The utility model can be directly installed in a car horn of an internal or external connection type, besides the advantages of small consumable power, ultra low heat raising, small size, high reliability, etc.

Description

The contactless electric horn of automobile controller

The utility model belongs to the electric automobile horn of a kind of contactless large-current electric control.

No matter at present traditional electric automobile horn benzvalene form, the mechanical contact form that snail type all adopts platinum or silver contact, because electric current big (reaching 10A), switching frequency height as snail type, it is inferior to several thousand times that per second reaches hundreds of, so the two ends, contact produce frequent electric spark, cause pitting of contact, even adhesion, the electric horn coil is burnt out, failure rate is big.Although at present domestic once had the people that this is carried out the contactless control of electronics, always unsatisfactory because its electric current is big, consumable is big, it is high to heat up, need heat radiation, do not form market product so far.

The purpose of this utility model provides a kind of contactless electric horn of automobile controller, adopt integrated component and voltage-controlled power device and level transfer techniques to form a kind of no mechanical contact form, can export big electric current, and consumable is little, especially the extremely low effective control circuit device of intensification improves functional reliability.

Principle of the present utility model is: be made up of EDM Generator of Adjustable Duty Ratio formula clapp oscillator, level transfer phase inverter, voltage-controlled power output stage, superpotential absorption, superpotential input protection, loudspeaker loading coil; Specifically be achieved in that technically by IC; R1; D1; D2; W; the signal that the EDM Generator of Adjustable Duty Ratio formula oscillator A that C1 forms produces by the IC3 pin through R2; C2 (is electrically connected; the back is electrical connection) connect respectively by C2; C3; D3; D4; R2; R3; the level that BG1 forms shifts BG1 base stage among the phase inverter B and D4 and obtains a level at BG1 collector and R3 one end and shifted the reversed phase signal that is exaggerated; the BG2 that connects among the voltage-controlled power output stage C carries out control; and output removes to promote horn coil L; the sound takes place; in addition by overvoltage protection D (by R4; D5 forms) pulse high-voltage in the power supply is absorbed, with the protection electronic component.Its circuit theory is (with reference to Fig. 3): positive source is through R1; D1; W1-2 charges to C1; the IC3 pin becomes electronegative potential when being charged to IC6 foot valve value; IC7 pin conducting over the ground simultaneously; then C1 is through W2-3; D2; the IC7 pin discharges over the ground; put when being lower than IC2 foot valve value; the upset of IC3 pin is noble potential; this moment, the IC7 pin ended over the ground; circuit begins again C1 charging is entered circulation; its constant t1=0.693 (R1+W1-2) * C1 that charges; discharge constant t2=0.693 (W2-3) * C1; so T=t1+t2=0.693 (R2+W) C1; regulate R1 and can change frequency; its dutycycle is t1/t2=(R1+W1-2)/(W2-3); so regulator potentiometer W midrange; the oscillator signal that obtains an EDM Generator of Adjustable Duty Ratio joint comes to the back level; after determining as the W midrange; available 2 fixed resistances replace; this signal one tunnel connects the BG1 base stage through R2; another road is through C2; D3; D4; two voltage-multiplying circuits that C3 forms; obtain a level shifted into about 2 times to the high voltage of supply voltage; connect BG1 collector and voltage-controlled power output stage BG2 input end through R3; and output propelling coil L; R4 among the figure; D5 forms overvoltage protection D; D6 is BG2 input end superpotential input protection E, and D7 absorbs for the reverse potential that coil L is produced, and K is manual horn button.The R3 value should be taken between 50K Ω-1M Ω.

The utility model and existing automobile have the great advantage of contact electric horn to be: both saved precious metal, improved reliability of products and life-span again, similar electric horn with other is compared, the most obvious point is that consumable is little, it is minimum to heat up, reliability height, and good stability.

The utility model relates to 3 width of cloth Figure of description altogether, wherein:

Fig. 1: contactless electric horn of automobile controller synoptic diagram in kind, wherein X is a printed circuit board (PCB), above soldering of electronic components, Z is outlet terminal (being installed in the electric horn with material object is example).

Fig. 2: contactless electric horn of automobile controller principle square frame, wherein: EDM Generator of Adjustable Duty Ratio formula clapp oscillator is A, and it is B that level shifts phase inverter, and voltage-controlled power output stage is C, and superpotential is absorbed as D, and the superpotential input protection is E, and the negative transversal circle of loudspeaker is L.

Fig. 3: the circuit theory diagrams of contactless electric horn of automobile controller.

The oscillator A that forms by IC, R1, D1, D2, W, C1 among the figure, R1 one termination R4 energize positive pole wherein, the other end connects the positive level of D1, D2 negative pole and IC7 pin, the D1 negative pole connects W potentiometer the 1st pin, anodal W potentiometer the 3rd pin that connects of D2, W potentiometer central point the 2nd pin connect C1 one end and IC6, IC2 pin, C1 other end ground connection, the IC3 pin connects C2 negative pole and R2 one end, as the oscillator signal output point; The level of being made up of C2, C3, D3, D4, R2, R3, BG1 shifts phase inverter B, its R2 other end connects the BG1 base stage, anodal D3 negative pole and the D4 positive pole of connecting of C2, the D3 positive pole connects R4 energize positive pole, the D4 negative pole connects the end of C3 positive pole and R3, C3 negative pole and the same ground connection of BG1 emitter, the R3 other end connect BG1 collector and D6 negative pole and BG2 input end, shift phase inverter as level; The D6 positive pole links to each other with the BG2 output terminal with the D7 negative pole, as not the level voltage-controlled power output stage C, signal is defeated by horn coil L.

The utility model can be directly installed in the electric horn or circumscribed.

Claims

1; the contactless electric horn of automobile controller is by EDM Generator of Adjustable Duty Ratio formula clapp oscillator A; level shifts phase inverter B; voltage-controlled power output stage C; oversampling circuit absorbs D; superpotential input protection E; the negative transversal circle of loudspeaker is formations such as L; it is characterized in that: by IC; R1; D1; D2; W; the signal that the EDM Generator of Adjustable Duty Ratio formula clapp oscillator that C1 forms produces by the IC3 pin through R2; C2 connects respectively by C2; C3; D3; D4; R2; R3; the level that BG1 forms shifts BG1 base stage and the D4 among the phase inverter B; obtain a level at BG1 collector and R3 one end and shifted the reversed phase signal that is exaggerated, the BG2 that connects among the voltage-controlled power output stage C carries out control.

2, contactless electric horn of automobile controller according to claim 1 is characterized in that: resistance R 3 values are between 50K Ω-1M Ω, and potentiometer W can replace with fixed resistance.