CN2382604Y

CN2382604Y - Windshield wiper for automobile

Info

Publication number: CN2382604Y
Application number: CN 99217088
Authority: CN
Inventors: 付海波
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-07-23
Filing date: 1999-07-23
Publication date: 2000-06-14
Anticipated expiration: 2009-07-23

Abstract

The utility model provides a novel windshield wiper, which comprises a voltage stabilizing circuit, a switching circuit, a judgment circuit, an oscillation circuit, a water spraying circuit and a control circuit which are connected with one another orderly, wherein, the voltage stabilizing circuit adopts a three-terminal voltage stabilizer, and the power supply voltage for an automobile is stabilized under the required voltage, so as to supply effective voltage to each circuit. The switching circuit and the judgment circuit are used to control the work of the oscillation circuit, so as to realize the required windshield wiper intermittence time. The control circuit controls start intermittence time through the oscillation circuit, so as to reach the action of controlling a windshield wiper electric motor.

Description

The windshield wiper controller

The utility model relates to a kind of windshield wiper intermittent controller.

At present, what the rain brush of the high, medium and low shelves automobile that travels on the road all adopted is one grade or fast, slow two grades of rain brush speed controllers, but, rain brush blow the rain intermittent time and frequency uncontrollable, cause the driver very inconvenient when driving, blow the rain excessive velocities as rain brush the driver is not felt well, but the rain speed of blowing of rain brush is crossed the sight line that will have influence on the driver slowly again, thereby can cause traffic hidden danger.For this reason, people have found out the deficiency that variety of way overcomes this rain brush, as in Chinese patent application CN2265327Y, a kind of automobile electrical screen wiper intermittent controller is disclosed, what it adopted is by resistance, the vibration that electric capacity and integrated circuit Ic form, time delay circuit, discontinuous running through relay control Wiper motor, thereby reach the effect of control rain brush, but should see, how be difficult to obtain it from this piece document realizes and the cooperating of the original rain brush of automobile, and, cause the driver also to need complicated adjustment in the process of moving owing to wherein also include adjustable resistance, caused new traffic hidden danger again.Also have; in patent application CN2077821U; disclose a kind of electronic controller of motorcar electric rain brush, it forms oscillating circuit and time delay circuit by Ic integrated circuit and capacitance resistance, adjusts resistance, capacitance values to change oscillation frequency and delay time with potential device or select switch; running by relay control electrical screen wiper motor; this controller joint is many, and assembling is complicated, and general driver implements difficulty; and do not have safety method, cost is higher.

The purpose of this utility model will overcome above-mentioned problems of the prior art exactly, a kind of new automobile rain brush controller is provided, it adopts on the basis of original windshield wiper control, add a rain brush controller, so that carry out rain brush when intermittently controlling to adjust at needs, start this rain brush controller, reach the ideal control effect.

To achieve these goals, the utility model is realized by the following technical solutions.

The utility model provides a kind of novel rain brush controller, and it comprises: mu balanced circuit, and switch circuit, decision circuitry, oscillating circuit and control circuit is characterized in that, above-mentioned each circuit connects in proper order, and wherein

Mu balanced circuit, it is made up of voltage stabilizer (T1) and electric capacity (C1), and voltage stabilizer is selected 7809 three terminal regulators for use, and its 1 pin is an input end, 2 pin ground connection, 3 pin are mouth, electric capacity is filter capacitor, is parallel between 2 pin and 3 pin;

Switch circuit, it selects chip (CD4013) and touch-switch key for use, and resistance (R1, R2, R3, R4, R5), and electric capacity (C2) is formed; Chip (CD4013) is a cmos circuit, and when automobile key was opened, mu balanced circuit was chip (CD4013) power supply, and electric capacity (C2) provides a high potential for 4 pin of chip, and then chip (CD4013) resets, its 1 pin output low level, and oscillator is not worked; Touch-switch (SA) closure once provides a high level by resistance (R1) for 3 pin, and the high level of 5 pin is transferred to 1 pin, and its 1 pin output high level is because 2 pin link to each other with 5 pin, so 5 pin become low level; If with touch-switch (SA) closure once, 3 pin are transferred to 1 pin with the low level of 5 pin again; When so just having realized that automobile key is opened each time, its output all is low level; Under the state at this moment, every closure (SA) once, once conversion just takes place in 1 pin output;

Decision circuitry, it is by chip (CD4013), phase inverter (CD4069), resistance (R6, R7), and electric capacity (C4) forms, and judges the mode of operation of former car rain brush switch by the voltage signal of gathering on the Wiper motor; If the rain brush switch opens, former car Wiper motor in running condition, 9 pin of input inverter this moment (CD4013) are in low level, and it is exported 13 pin and also is in low level, and control generator resets, and makes the oscillator output low level; If the rain brush switch cuts out, former car Wiper motor is under the off position, and this moment, input inverter was under the high level 9 pin of chip (CD4013), and it is exported 13 pin and also is high level, and 4 pin preset ends of oscillator are high level, allow oscillator work;

Oscillating circuit, it is by time base circuit (NE555), resistance (R9, R10), and diode (D3, D4), and electric capacity (C5, C6) form, during oscillating circuit energising work, at first by resistance (R9), diode (D3) charges to electric capacity (C6), in process of charging, mouth 3 pin of its time base circuit are high level, by control circuit Wiper motor are worked at once; After electric capacity (C6) charging finishes, by resistance (R10), diode (D4) and the discharge of 7 pin, when discharge, its mouth 3 pin are low levels, control circuit is not worked; By the different resistance value of resistance (R10), realize many grades of adjustings; When control system is switch opens, electric capacity (C6) charging, output control system work, intermittent time is exactly a length of adjusting discharge time, and the dutycycle coefficient can be regulated in the extremely wide scope of 10%-90%;

Control circuit, it is by aerotron (T3), resistance (R11), diode (D5), relay (J1, J2) form, wherein the emitter of aerotron is connected on the end of resistance (R11), and the other end of resistance (R11) is attempted by on the end (J11) of relay (J1), the end (J21) of relay (J2) connects on the negative pole of diode (D5), the positive pole of diode (D5) is attempted by on the end (J12) of collecting electrode (J1), and end (J22) ground connection of relay (J2) is in order to carry out the instruction of oscillating circuit.

In addition, the windshield wiper controller, it is characterized in that also can comprising the water spray circuit, it is by phase inverter (CD4069), electric capacity (C3), diode (D2) is formed, wherein electric capacity (C3) connects on the positive pole of phase inverter, negative earth, and the positive pole of diode (D2) is connected on the positive pole of electric capacity (C3), the negative pole of diode (D2) is connected on the negative pole of diode (D1), the positive pole of diode (D1) is connected on phase inverter 3 pin, when the water spray machine operation, through phase inverter, electric capacity (C3) and be in high potential makes control circuit work through diode (D2); When water spray stops, after the high potential of electric capacity (C3) is kept a period of time, control circuit is quit work, the length of holding time is the discharge time of electric capacity (C3).

Describe the utility model below in conjunction with specific embodiment, believe, will make the utility model clearer through following description, wherein:

Fig. 1 realizes windshield wiper controller schematic block diagram of the present utility model; With

Fig. 2 is the circuit diagram of specific implementation windshield wiper controller of the present utility model.

Embodiment of the present utility model will be described in detail belows, and the wherein concrete content that limits is preferred embodiment a kind of, is illustrated as just example at this, can not think restriction of the present utility model.

Referring to Fig. 1, it shows according to novel rain brush controller of the present utility model, and it comprises mu balanced circuit, switch circuit, and decision circuitry, oscillating circuit, control circuit, the wherein composition of each circuit and work as follows:

Mu balanced circuit, it is made up of voltage stabilizer T1 and capacitor C 1.T1 selects 7809 three terminal regulators for use, and its 1 pin is an input end, 2 pin ground connection, and 3 pin are mouth.C1 is a filter capacitor.Because the automobile spread of voltage, the interference of each systems such as driving engine, high-tension coil is strong, therefore, select mu balanced circuit for use after, for total system provides stable voltage, thereby guaranteed regularly intermittently precision.And when total system is not worked, can play the effect of power supply reverse connecting protection;

Switch circuit, it selects CD4013 chip and touch-switch key for use, and resistance R 1, R2, R3, R4, R5 and capacitor C 2 are formed.CD4013 is cmos circuit, and is low in energy consumption, and antijamming capability is strong.When automobile key was opened, mu balanced circuit was the CD4013 power supply, and C2 provides a high potential for its 4 pin, and then CD4013 resets, its 1 pin output low level, and oscillator is not worked.Touch-switch SA closure once provides a high level by resistance R 1 for 3 pin, and the high level of 5 pin is transferred to 1 pin, and its 1 pin output high level is because 2 pin link to each other with 5 pin, so 5 pin become low level.If 3 pin are transferred to 1 pin with the low level of 5 pin again with touch-switch SA closure once.When so just having realized that automobile key is opened each time, its output all is low level.Under the state at this moment, every closed SA once, once conversion just takes place in 1 pin output;

Decision circuitry, it is by CD4013, phase inverter CD4069, resistance R 6, R7 and capacitor C 4 are formed, and judge the mode of operation of former car rain brush switch by the voltage signal of gathering on the Wiper motor.If the rain brush switch opens, former car Wiper motor in running condition, input inverter at this moment, 9 pin of CD4013 are in low level, and it is exported 13 pin and also is in low level, and control generator resets, make the oscillator output low level, guaranteed the normal operation of former car rain brush switch working state.If the rain brush switch cuts out, former car Wiper motor is in (motor does not have) under the off position, and this moment, input inverter was under the high level 9 pin of CD4013, and it is exported 13 pin and also is high level, and 4 pin preset ends of oscillator are high level, allow oscillator work.Realized the work of former car Wiper motor switch by decision circuitry, oscillator resets, and former car Wiper motor switch is not worked, and allows oscillator work.Strengthen function, guaranteed the stable of electric machine operation state, prolonged service life.In real-world operation, its conversion of operation state is for the user provides great convenience simultaneously;

Oscillating circuit, it is by time base circuit NE555, resistance R 9, R10, diode D3, D4 and capacitor C 5, C6 forms.During oscillating circuit energising work, at first by R9, D3 charges to C6, and in process of charging, mouth 3 pin of its time base circuit are high level, by control circuit Wiper motor are worked at once.After the C6 charging finishes, by R10, D4, the discharge of 7 pin, when discharge, its mouth 3 pin are low levels, control circuit is not worked.Many grades of different R10 resistance values so just can change the length of discharge time, realize the purpose of many grades of adjustings, to make things convenient for the use under the different weather condition.Be at this oscillating circuit and the difference of other circuit, when control system is switch opens, C6 charging, output control system work, intermittent time is exactly a length of adjusting discharge time, and the dutycycle coefficient can be regulated in the extremely wide scope of 10%-90%;

The water spray circuit, by phase inverter, C3, D2 forms.When water spray during machine operation, through phase inverter, C3 and be in high potential makes control circuit work through D2.When water spray stops, after the high potential of C3 is kept a period of time, control circuit is quit work, the length of holding time is the discharge time of C3; With

Control circuit, it is by T3, R11, D5, J1, J2 forms, and function is to carry out the instruction of oscillating circuit and water spray circuit, improves anti-interference resistance, the carrying load ability of enhancing system function.

Below in conjunction with accompanying drawing 2, the form of the composition of circuit is described particularly.

Referring to Fig. 2, the 12V automobile power source is introduced 1 pin of three terminal regulator T1; The collecting electrode of T3, normal battle of the J15 of J1, the 2 pin ground connection of T1; The 3 pin output of T1 connects the positive pole of C1, the negative earth of C1; 3 pin of T1 connect the positive pole of C2, and the negative pole of C2 connects 4 pin of IC1; 3 pin of T1 connect the SA1 of touch-switch SA, and SA2 connects the end of R1, and the other end of R1 connects 3 pin of IC1; 3 pin of T1 connect the collecting electrode of T2; 3 pin of T1 connect 14 pin of TC1; 14 pin of IC2,1 pin of IC1 connects the end of R2, and the other end of R2 connects the base stage of T2; 2 pin of IC1 are connected with 5 pin of IC1; 3 pin of IC1 connect the end of R3, the other end ground connection of R3; 4 pin of IC1 connect an end of resistance R 4, the other end ground connection of R4; 6 pin of IC1 connect the end of R5, the other end ground connection of R5; The 7 pin ground connection of IC1,8 pin of IC1 connect the end of R6, the other end ground connection of R6; 9 pin of IC1 connect 6 pin of IC2; 10 pin of IC1 connect R7, the other end ground connection of R7; 11 pin of IC1 connect 12 pin of IC2; 12 pin of IC1 are vacant; 13 pin of IC1 connect 4 pin of IC3; 1 pin of IC3 is connected B1 (automobile water spray motor switch) with 3 pin, 2 pin of IC2 are with the positive pole of 4 pin connection C3, the negative earth of C3; 5 pin of IC2 connect J23; The 7 pin ground connection of IC2; 11 pin that 8 pin of IC2 connect IC2 connect the other end ground connection of C4 with C4; 9 pin of IC2 connect Wiper motor M5; 10 pin of IC2 connect 13 pin of IC2; The 1 pin ground connection of IC3; 2 pin of IC3 also connect 6 pin of IC3, and 3 pin of IC3 connect on the positive pole of D1, and the negative pole of D1 also connects on the negative pole of D2 and the end of R8, and the other end of R8 connects on the base stage (T3b) of T3, and the positive pole of D2 is connected on the positive pole of C3; 5 pin of IC3 connect the end of C5, the other end ground connection of C5; 7 pin of IC3 also connect on the end of R9, on the emitter (T2e) of another termination T2 of R9; The negative pole of D3 connects on the positive pole of 2 pin of IC3 and C6; The negative earth of C6; The positive pole of D4 connects many grades of resistance R 10, and the other end of R10 is attempted by on 6 pin of IC3; 8 pin of IC3 connect the emitter (T2e) of T2; The emitter of T3 connects the end of R11, and the other end of R11 is attempted by on the J11 of J1; The J21 of J2 connects the negative pole of D5, and the positive pole of D5 is attempted by the J12 of J1, the J22 ground connection of J2; J14 connects former car rain brush switch speed shelves; J23 connects the slow shelves of former car rain brush switch, connects 5 pin of IC2 simultaneously; J24 connects Wiper motor, after the slow shelves of former car Wiper motor disconnect, connects J23 and J24 respectively, and J25 is vacant.

Wiper motor M is totally 5 connection leads, and M1 meets 12V; M2 ground connection; M3 connects the fast shelves of rain brush switch; M4 connects the slow shelves of rain brush switch; M5 connects 9 pin of IC2.

The mode of operation of above-mentioned rain brush control circuit is as follows:

Open automobile key switch, connect the 12V automobile power source, three terminal regulator T1 starts working, its 3 pin output power supply, IC1, IC2 work this moment, C2 conducting during energising, 4 pin of IC1 are high level, 2 pin and 5 pin of IC1 are connected to high level, 1 pin of IC1 is a low level, and T2 is ended, and IC3 does not work; After energized, IC2 work, its mouth is controlled the 13 pin output of IC1 after judging.Do not work as former car rain brush, the 13 pin output high level of IC1,4 pin of IC3 also are high level, at this moment, closed SA once, 3 pin of IC1 are high level, this moment, 5 pin of IC1 were high level, make the 1 pin output high level (2 pin and 5 pin change low level into) of IC1, the T2 conducting, 8 pin of IC3 are high level; Because of 4 pin are high level, so IC3 work.SA again closure once, 3 pin of IC1 are high level, this moment, 5 pin were low level, making output 1 pin is low level (2 pin and 5 pin become high level), T2 ends, IC3 does not work, and has realized every closed SA, circuit is done once to change.

During IC3 work, R9, D3 charges to C6, and during charging, 3 pin of IC3 are high level, the T3 conducting, J1, the J2 closure is controlled the work of former car Wiper motor; When C6 is charged to 2/3 voltage, by R10, R11, the 7 pin discharge of IC3, the low level of 3 pin is ended T3, J1, J2 disconnects; Regulating resistance R 10 combined switches can change discharge time in order to regulate resistance, realizes the 15-30 adjusting at intermittence of second.

During the slow shelves work of former car rain brush, 13 pin of IC1 are low level, and IC3 resets, and in order to the protection Wiper motor, promptly slow shelves, fast shelves can not be given the 12V voltage power supply simultaneously.

The windshield wiper controller that provided is provided, and it has realized using rain brush controller of the present utility model under former car rain brush control unmodified situation, make more convenient to operate, install more flexible, also fairly simple on the structure, be easy to practical application.

Claims

1, a kind of windshield wiper controller, it comprises: mu balanced circuit, switch circuit, decision circuitry, oscillating circuit and control circuit is characterized in that, above-mentioned each circuit connects in proper order, and wherein

2, according to the windshield wiper controller of claim 1, it is characterized in that also can comprising the water spray circuit, it is by phase inverter (CD4069), electric capacity (C3), diode (D2) is formed, wherein electric capacity (C3) connects on the positive pole of phase inverter, negative earth, the positive pole of diode (D2) is connected on the positive pole of electric capacity (C3), and the negative pole of diode (D2) is connected on the negative pole of diode (D1), and the positive pole of diode (D1) is connected on phase inverter 3 pin, when the water spray machine operation, through phase inverter, electric capacity (C3) and be in high potential makes control circuit work through diode (D2); When water spray stops, after the high potential of electric capacity (C3) is kept a period of time, control circuit is quit work, the length of holding time is the discharge time of electric capacity (C3).