CN2048445U

CN2048445U - Water scraper with electronic time switch in automobile

Info

Publication number: CN2048445U
Application number: CN 89203129
Authority: CN
Inventors: 李自广
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-03-23
Filing date: 1989-03-23
Publication date: 1989-11-29

Abstract

The utility model discloses a water scraper with an electronic timed switch in an automobile. The water scraper is composed of a direct current motor, a speed variator, an eccentric wheel, a connecting rod, a screen wiper of a swing link and an electronic timed switch. The oscillation frequency of the swing link of the water scraper can be controlled by the pulse time in the electronic switch. When the water scraper is used, the oscillation frequency can be adjusted according to the degree of rainfall. Therefore, the problem that the frequency of a traditional water scraper is single can be avoided. The electronic timed switch of the utility model is composed of a CMOS digital integrated circuit. The utility model has the advantages of small size, light weight, high reliability, long service life, simple structure and convenient operation. The water scraper with an electronic timed switch in an automobile can be widely used in the field of transport vehicles, such as automobiles, tractors, etc.

Description

Water scraper with electronic time switch in automobile

The utility model belongs to car electrics control field.

The used automobile water wiper of municipalization so far, all be basically by a direct current motor through change-speed box, eccentric wheel, connecting rod, fork drive anterior rain brush, when using, energized, motor rotation.Export a kind of speed, control rain brush reciprocally swinging, its hunting frequency car is different with car.Generally at 0.8 second～2.5 seconds/time, the frequent swing of Windshield Wiper affects the attention that the driver drives, and does not need higher hunting frequency because of rain is little, thus the driver then one side drive one side frequently manually switch on and off the Windshield Wiper power supply.So also the energy the utility model that will disperse the driver to drive unavoidably improves the problems referred to above, a kind of can regularly being scraped the water time by the selection of rainfall size by the driver proposed, the time of reserving need not manual frequent operation, so not only alleviate the labour intensity that automobilist's rainy day drives, the guarantee attention is concentrated, and the more important thing is provides the measures of an aspect to reducing rainy day motor traffic accidents incidence.

The utility model adopts the clock relay of being made up of the digital polse electronic circuit to control Windshield Wiper and scrapes the water frequency.Each pulse is scraped water once, and after scraping water and once finishing, the Windshield Wiper fork is got back to original position.Because each automobile water wiper fork time of oscillation length difference is the longest 2.5 seconds/time.The shortest 0.8 second/time.This time is carried out preconditioning according to vehicle self Windshield Wiper fork time of oscillation.Scrape water and regularly divide five grades of selections according to the rainfall size.The I shelves are scraped water continuously, and it is that water is scraped in timing in 2 seconds～16 seconds that band is scraped water conservation II shelves-V shelves.

The utility model is linked by output shaft and change-speed box (4) by DC machine (3), drive the trace (5) that eccentric wheel eccentric wheel front portion is fixed with horizontal storing, the electric timing switch automobile water wiper that the trace two ends link by fork (6) and rubber brush.Control the purpose of scraping water frequency electric timing switch part of the present utility model by regularly scraping aquapulse signal generator (8) in order to reach, 9. the impulse singla of generation counts frequency division through digital clock.Again this is scraped aquapulse after 10. water selector chooses at random and do and regulate and handle by regularly scraping.Be input to actuating system to this impulse singla shaping with after amplifying then, to reach the arbitrarily purpose of control of control DC machine and Windshield Wiper.

The main portion of electric timing switch adopts the cmos digital integrated circuit to combine, with reduced volume, and expendable weight, guaranteeing can reliable and stable work under the frequent swing condition.Housing adopts sheet metal or plastics.The utility model DC machine, change-speed box, eccentric wheel, fork, connecting rod and rain brush except that electric timing switch all are conventional, no specific (special) requirements.

Below in conjunction with accompanying drawing implementation example of the present utility model is described in detail;

Fig. 1 is the utility model integral structure figure.1 is automobile 12V power supply, and 2 is electronic timer, and 3 is the Windshield Wiper DC machine, and 4 is change-speed box and eccentric wheel, and 5 is that Windshield Wiper trace 6 is the Windshield Wiper fork, and 7 are the Wiper rubber brush.

Fig. 2 is the structured flowchart of the utility model electric timing switch.8 for regularly scraping the aquapulse signal generator, and 9 is digital clock, and 10 for regularly scraping water selector, and 11 for scraping the aquapulse regulating control, and 12 are shaping pulse, and 13 for signal amplifies, and 14 is actuating system.15 for scraping the water demonstration.

Fig. 3 is a kind of physical circuit figure of the utility model electric timing switch embodiment.IC ₁～IC ₄Be digital integrated circuit, BG is an aerotron, C ₁～C ₆Be electric capacity R ₁～R ₅Be resistance, D1, D2; Be diode, J is a relay, K ₀₁～K ₀₅Be band switch, LED is a light-emitting diode, and L is a Windshield Wiper DC machine winding.

According to Fig. 1 as can be known, DC machine DC12V of the present utility model, be fixed with small-sized change-speed box on the output shaft, be fixed with eccentric wheel on the transmission output shaft, the eccentric wheel upside is fixed with rotary lateral connecting rod, the pull bar upper lateral part has fork and rain brush, when motor rotated, eccentric wheel rotated, the lateral connecting rod sway, thereby the control fork is the center swing with pull bar two ends adapter shaft, at the DC machine leading section electric timing switch is arranged.

According to Fig. 3 as can be known, behind the connection automobile direct current 12V power supply, the electric timing switch time gate is fixed on a certain shelves, as K ₀₂Put the I shelves, direct current+12V passes through the relay winding to power cathode, relay adhesive, J ₀₁Closed.These shelves can ensure that Windshield Wiper scrapes water continuously, are not subjected to influence circuit.As with K ₀₁When putting II shelves or II～V shelves, by I _C1C ₁, R ₁W ₁The rectangular pulse signal that the aquapulse signal generator produces f=5Hz is scraped in the timing of forming, through I _C2Behind the rolling counters forward frequency division, pass through K ₀₁Regularly scrape water selector, be input to by I _C2C ₂R ₃The univibrator of forming, generation pulse width are 0.3 second impulse singla.This signal is again via I _C4, C ₃, C ₄, W ₂That forms scrapes the aquapulse regulating control, produces pulsewidth at last 0.6 second～3 seconds, the rectangular pulse signal K in 2～16 seconds pulse spacings ₀₁For regularly scraping wet concentration selects coarse adjustment, W1 is for regularly scraping the water fine setting.At last this signal is input to I _C1Shaping.Be input to transistor base again,, when transistor base is active potential, both no pulse, aerotron ends, not adhesive of relay, Windshield Wiper is not worked.When the transistor base high potential, aerotron saturation conduction, relay adhesive, J ₀₁Closed.Direct current 12V positive supply is by relay contact J ₀₁Connect Windshield Wiper DC machine winding.Windshield Wiper work.Behind the end-of-pulsing, transistor base is got back to the active potential aerotron and is ended, and relay discharges the outage of Windshield Wiper DC machine, Windshield Wiper finish make a round trip scrape water after, the Windshield Wiper fork is got back to original position.The Windshield Wiper mode of operation can pass through LED ₁LED ₂Light-emitting diode monitors.Green expression Windshield Wiper is drawn together the water time, red expression Windshield Wiper standing time.

Used digital integrated circuit can be selected CMOS, TTL or PMOS for use in the circuit.Aerotron β=50～80, BVceo＞20V, resistance all adopt metallic membrane, and relay contact requires greater than 3A, C ₂Adopt leaded multilayer ceramic capacitor, other electric capacity does not have specific (special) requirements.Power line voltage direct current 12V adopts automobile storage battery DC12V power supply, minimum must not be less than 10V.

The utility model is rational in infrastructure, highly versatile. It is little to have volume, in light weight, and cost is low regularly accurately, and is easy to connect with car electrics, operation, regulate simple, vibrationproof, the advantage such as antijamming capability is strong. Be fit to the new and old motorcar electric wiper of domestic and international various models and support the use, have good effect to progressively realizing automotive automation.

Claims

A kind ofly link by output shaft and change-speed box (4) by DC machine (3), drive eccentric wheel, the eccentric wheel front portion is fixed with the trace (5) of horizontal storing, the electric timing switch automobile water wiper that the trace two ends link by fork (6) and rubber brush (7), it is characterized in that having by regularly scraping aquapulse signal generator (8) in motor (3) input end, digital clock 9., regularly scrape water selector 10., impulse regulator (11), dresser (12), amplifier (13), actuating system (14) is scraped the electric timing switch that water shows that (15) are formed.