DE2352471A1 - LIGHT CLEANING SYSTEM FOR MOTOR VEHICLES - Google Patents

Description

§) Int. Cl. ² :

D FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE B 60 S 1-08

B 60 S 1-46

Offenlegungsschrift 23 52 471

Union priority: ES) (53) oil)

File number: P 23 52 471.2-31

Registration date: 10/19/73

Disclosure date: April 30, 75

Designation: Lights cleaning system for motor vehicles

Applicant: Bayerische Motoren Werke AG, 8000 Munich

Inventor: Buchleitner, Konrad; Ditzer, Erich; 8000 Munich; Schweiger, Erwin, 8060 Dachau; Jochmann, Franz, 8000 Munich; Hofele, Günter, Dipl.-Ing., 8045 Ismaning

A request for examination according to § 28 b PatG has been made

Publications to be considered for the assessment of patentability:

Nothing determined

© 4.75 509 818/504

BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, 8 Munich

• October 5, 1973

Lights cleaning system for motor vehicles

The invention relates to a light cleaning system for motor vehicles, in particular a headlight cleaning system, via switching means directly by switching on the lights and / or when operating the Lights can be put into operation by switching on a windshield cleaning system.

In a known lamp cleaning system of this type (US Pat. No. 3 o5S 142), the operation of the system is controlled by the effect triggered by switching means when the lights are switched on and the windshield window cleaning system is put into operation. The disadvantage here is that the lights are cleaned automatically then is not guaranteed if the dirty Luminaires are put into operation. The disadvantage is: furthermore high consumption of cleaning agent due to short-term automatic repetition of the Operating when im. The driver's field of vision, stuck dirt particles lying down, possibly repeated several times removed during operation of the windshield cleaning system. When the lights are switched on, their cleaning system becomes unnecessary with operated.

In another known lamp cleaning system (DT-OS 2 578 3oo) is also provided, always initiate their operation when the lights are switched _f Thus, a cleaning of the lights

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secured in every case of need, but here is a further disadvantage that the operation in an unnecessary manner also occurs when the lights are switched on are clean, so that an even higher consumption of cleaning agents and an overall excessive consumption Operating time with correspondingly increased wear of the components, such as in particular wiper blades and Detergent pumps, enters.

The invention is based on the object of a lighting cleaning system to create the low water consumption and wear and tear by avoiding unnecessary operation has, but is always put into operation, or. can be operated arbitrarily, if a high degree of soiling of the lamp panes is given or is to be expected.

This object is achieved by the invention in that the switching means are designed and arranged in such a way are that

a) the operation of the luminaire cleaning system when the luminaires are switched on exclusively according to the previous procedure Operation of the windshield cleaning system and / or

b) the repetition of the operation of the lamp cleaning system only for a predetermined time after a previous operation of the same and / or

c) this repetition only after the windshield cleaning system has been used one or more times is effected.

With the training according to the invention. The luminaire cleaning system only always put into operation immediately by switching on the lights if due to one or more previous cleanings of the windshield with the lights still switched off ...

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"The latter is very likely to be contaminated. This can happen in any type of operation the lights happen, namely with position lights or parking lights or parking lights, with driving lights, High beam, fog light and / or also with direction indicators and flashing lights. If the for this provided light sources are arranged under common luminous disks, is not special for this Effort required. Traffic safety is increased with the invention because the lights are soiled is removed regularly and in a layman-safe manner immediately when they are put into operation, without unnecessary frequent operation with senseless consumption of cleaning agents and wear of the components occurs, such as especially when switching on unpolluted lights in underpasses, tunnels, parking garages, etc. «

Furthermore, the exclusion according to the invention of a numerically or briefly consecutive and thus regularly unnecessary repeat operation of the lamp cleaning system in common with the windshield cleaning system also excludes a previously unavoidable excessive consumption of cleaning agent and wear of the components. The lay-safe operation of lamp cleaning systems is further promoted by the invention, since operation ^ after the cleaning agent has been used up and thus a dry run of the lamp cleaning system that is dangerous for the pumps because it cannot be detected while driving is largely prevented. Due to the reduced consumption of cleaning agent, a longer operational readiness until refilling of cleaning agent is achieved, which is also beneficial for road safety.

The claims 2 · to 5 contain further features for advantageous further development and embodiment of the invention

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manure. Due to the features of claim 2, a low-cost construction of the switching means as electrical and / or electronic SchaHäLemente is provided, which can be used both in electrically and mechanically, pneumatically or hydraulically controlled and operated lamp cleaning systems for their inventive control. The combination of the switching means according to the invention with a program generator determining the automatic sequence of a cleaning process enables a further simplification through the structural and functional merging of different switching means. The design of the switching means provided according to the invention as a holding circuit and / or counting circuit which can be controlled by the windshield cleaning system according to claim 4 using conventional switching relays or corresponding electronic switching elements represents a solution with particularly low construction costs and high operational reliability for special requirements there is also the option of setting the time or the number of operations that enables repetitive operation to be arbitrarily set using conventional switching means. Dur _ö ch the features of claim 5, a switch training and its connection with the switching means is proposed that in a first switch position the sequence of the lamp cleaning system according to the invention and in a second switch position with switching off all locking devices in addition to the windshield cleaning system and the lights -Cleaning system starts up. This ensures that, in the event of malfunctions in the switching means of program transmitters, the lamp cleaning system can still be operated to ensure traffic safety. It can be in the second switch position

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both immediate switching on of the luminaire cleaning system and possibly also the windshield cleaning system as well as a triggering of operating programs be provided for both systems.

The invention is explained in more detail with reference to the drawing, which shows a switching arrangement of the lamp cleaning system according to the invention represents for motor vehicles in one embodiment.

It shows;

Fig. 1 shows the entire circuit arrangement of a lamp cleaning system and

Fig. 2 shows the internal circuit of a program generator for the switching arrangement according to FIG. 1.

The circuit according to the circuit arrangement shown is connected with its positive and negative poles to the electrical system of a motor vehicle. A pushbutton switch 1 - shown here in the switching position that interrupts the circuit - has contact bridges 2 and 3 through which the contact pairs 4, 4 ¹ V 5,. 5 * and 6, 6 ^{1 are} controlled, whereby their individual contacts 4 and 5 are directly on the ..minus pole of the electrical system. The individual contacts 4 ^f and 5 'are provided via a terminal 7 with a transistor "controlled program encoder 8 in electrically conductive. ■ connection. The program generator 8 is in turn through a terminal 9 to the negative pole and via a connection 1o with the The positive pole of the vehicle electrical system is connected, the positive pole being applied to the connection 1o when either the lights 11 and 12, which are each connected to the negative pole of the vehicle electrical system via connections 11 'and 12', are connected to a battery 14 when the light switch 13 is closed are in an electrically conductive connection or

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if, with the ignition switched on, ie an ignition switch 15 is in the closed switch position, the contact bridges 2 or 3, the contact pairs 4, 4 ', 5, 5 ¹ or 6, 6 * are brought into an electrically conductive connection. The program generator 8 receives its operating voltage via connections 9 and 1o.

In the program transmitter 8 is a relay 16 with its Coil 16 * controlled. A switching contact 17 of the relay connects via terminals 18 and 18 'as well as 31 and 32 the Positive pole of the on-board network via switching contacts 19 and 2o of limit switches of the wiper motors 21 and 22 with their motor windings, which in turn are constantly connected to the negative pole of the vehicle electrical system. In the illustrated Switch position, the circuit is interrupted by switch contact 17, as this connects connection 3 18 * connects via the connection 18 '' to the negative pole of the vehicle electrical system. The switching contacts 19 and 2o are over .-Cam controlled, usually on the runners of the Wiper motors 21 and 22 are arranged so that the wiper arms 23 and 24, respectively, moved by the wiper motors the lights cleaning system regardless of the respective switch-off time of the switching contact 17 their assume the specified rest position. The switching contacts 19 and 2o connect when the wiper motors are running and 22 the connections 25 'and 26' alternating with connections 25 and 25 "or 26 and 26". On the runner The wiper motor 21 an additional cam-controlled switching contact 27 is arranged through which the circuit for a washer pump 28 via connections 29, 29 * and 29 ″ depending on the rotation of the wiper motor 21 is controlled. The motor winding of the washer pump 28 is constantly connected to the negative pole of the electrical system.

A windshield cleaning system 3o is located parallel to the connections 31 and 32 of the relay ¹ 16 of the program generator 8 on the vehicle electrical system.

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Aq one of the terminal 1o of the program generator 8 connected to the positive pole of the circuit of the lights 11 and 12 and subjected to a positive potential line 33 are connected in parallel to each other a resistor R, the coil 16 'of the relay 16 and a resistor Rg . A line 34 leads from the resistor Rg at a soldering point 35 to a ^{line 36 emanating from the coil I6 f} , "which connects the coil 16 to the collector of a transistor T. A transistor T ₁ , a resistor R ₁ - and a resistor R ₇ connected, the resistor R _{7 being connected} to a soldering pad 37 with a line 38. The line has a negative potential and is connected to the terminal 9. The transistor T ₂ its emitter is also connected to the line 38. A resistor Rg is connected in parallel with the transistor T ^, the resistor R- and the resistor R _{7. The base of the transistor T 2} is connected to a soldering point 4o via a line 39 sn the connection of resistors Rc and R ₇ connected.

A line extends from the connection 31, from which a line 43 branches off at a soldering point 42, which has the connection 18. From the soldering point 42, a thyristor T is arranged in the line 41, which is connected via a line 44 to a resistor R ,, · *. From the line 44 branches off at a soldering point 45, a line 46 in which a transistor Τλ is arranged. On the other hand, the transistor T ^ is connected via a soldering point 47 to a line 48 which is connected to the line 38 at a soldering point 49. Between the solder points 49 and 47 a diode D is arranged which only allows a current to flow in the direction of the solder point 47. The base of the transistor T is connected to a resistor R ^ ₂ , which also has a

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Soldering point 5o is connected to a line 51, which starts from the connection 7 of the program generator 8 and ends at the line 38 after the resistor Rg. A resistor R ^ 'is connected via a line 52 to the line 48 at a soldering point 53, which is between the diode D _? and the soldering point 49 is located.

In the line 41, a resistor IU is arranged, which connects it via a soldering point 54 to a line 55 which is applied to the base of the transistor T ^. A further line 57, in which a capacitor C1 is arranged and which is connected to a soldering point 58 on the line 55, branches off at a soldering point 56 from the line 41 upstream of the resistor R-. The soldering point 58 lies on the connection of the resistors R ^ and Rg _1, which are connected in series in the line 55. The line 55 is connected to a soldering point 59 on a line 6o, which is connected via soldering points 61 and 62 is in communication with lines 33 and 51, respectively. Between the solder points 59 and 61 and 59 and 62 are each a diode D ₂ and D ,. arranged so that only one current flow from the soldering point 59 in the direction of the line 33 and to the. Line 51 is possible. On the line. 51 is a further diode D ^ arranged between a soldering point 63 and the soldering point 62, which only allows a current flow from the soldering point 63 in the direction of the soldering point 62. The connection of the resistor R. to the emitter of the transistor T .. is connected to the line 51 at a soldering point.

A line 65 branches off from the solder joint 63, in which a diode D. is connected in front of a transistor T ^. the Diode D ^ only allows current to flow from solder joint 63 in Direction to transistor T, to. The emitter of the transistor T * is connected via a line 66 to the line 38 via a solder joint 67. At the base of the

- "■" - y -

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A line 68 is connected to the transistor T ^, in which a diode D, -, a resistor R-, ^ and a resistor R ^ are arranged "The line 68 is connected to a soldering point 69 on the line 66. Of soldering points 7o and 71 on line 68, further lines 72 and 73 go out, which are connected to soldering points 74 ″ or 75 are connected to line 38. A capacitor C2 ″ or a resistor Rg is arranged in the lines 7 £ and 73. The soldering points 7o and 71 in ·, ″ of the line 68 are on the one hand between the resistors R ^ ₁ and R ₁₀ and on the other hand between the Resistance R ^ and the base of the transistor T- ,.

A diode Dg is arranged between the soldering point 67 and a soldering point 76 in the line 66 in such a way that only a flow of current from the soldering point 67 in the direction of the soldering point 76 is possible. At the soldering point 76, a line 77 is connected, which is connected to both the connection 32 and the connection 18 *. The connection 18 ^ft is via a line 78 and a soldering point 79 with the line 38 and thus with the connection in connection. · '

To start up the lamp cleaning system, the push button switch 1 connects the terminals 4 and 4 ^f with its contact bridge 2 in its first switch position. Thereby, in the program timer 8 when 9 and 1o the terminals abuts it via s a potential, the coil 16 ^f of the relay 16 is driven "This combines characterized with its Sehaltkontakt 17, the terminals 18 and 18 ^f with each other, so that the circuit for the wiper motors 21 and 22 is closed and the wiper motors are put into operation. The motor of the washer pump 28 is thereby put into operation ^{- at times when connection 29 f of} the switching contact; 27 at connection 29 ^ft.

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In a second switching position of the pushbutton switch 1, it connects the terminals 5 and 5 with its contact bridges 2 and 3 ^! or 6 and 6 ¹ . As a result, on-board voltage is applied to the program transmitter 8 regardless of whether the lights 11 and 12 of the motor vehicle are switched on, so that the cleaning process of the lights cleaning system specified and triggered by the program transmitter 8 takes place.

The mode of operation of the program generator 8 is explained in more detail below. It is assumed that the + potential is applied to the connections 31 and 1o. This is the case when the lights 11 and 12 are switched on by means of the light switch 13 and when the ignition is switched on by means of the ignition switch 15. At the terminal 9 is the potential. - On and the wiper motors 21 and 22 are in their end position. The lamp cleaning system is then put into operation as follows: ^ By pressing the pushbutton switch 1, a negative potential is applied to the connection 7. Via the diode D,., The resistor R ^ and the resistor R ₂ , the potential - to the base of the transistor T ^ and at the same time via the 'diode D, also to the emitter of the transistor T ^. The transistor T ^ remains blocked. The capacitor CL is charged via the diode D «and the resistor R ^. After releasing the push button switch 1, the potential + passes through the resistor R ^ to the emitter of the transistor T ^. The transistors T ^ and T ^ switch through so that the coil 16 »receives voltage and the relay 16 picks up. The transistors T ^ and T ₂ remain switched on until the capacitor C, has discharged through the resistors Rp and R ^ (wiper time). The transistors T ^ and T ₂ then interrupt the current flow so that the relay 16 drops out. The wiper motor runs into its end position. As long as the relay 16 has picked up, the capacitor C ₂ loads. Diode D, -

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and the resistor R ^^, because the connection 32 via the connections 18 and 18 ^{f of} the relay 16-receives the potential + via the connection 31 and the ignition switch 15. After the relay 16 has dropped out, the potential reaches the emitter of the transistor T, ^{via the connections 18 f and 18 ″.} The transistor T switches through. Der.Emitter of the transistor T ^ rises over the diode Di, the collector, the emitter of the transistor T; and the connections .18 "and 18" to the potential - ge · ^; and remains at the potential until after the discharge of the capacitor Cp via the resistors R. and Rq, the transistor T, blocks. Until that time, a restart of the relay 16 and thus an un- ■ '■ Necessary Repeat the operation by pressing the push-button 1 is impossible.

The following is the commissioning of the luminaire cleaning system when switching on the light by activating: .control of connection 1 ο-explained in more detail. Included the following starting point is assumed; The closed ignition switch is connected to the connection 31 the potential · + on, at connection 1 ο on the other hand the potential - over the filament of the switched off lights 11 and 12. There is also potential at connection 9 - On and the wiper motors 21 and 22 are in their setting. Via the terminal 31 and the thyristor T. on the one hand and via the resistor R ^, the diode Dp and the connection 1o is the capacitor C ^ on Span-, · voltage and is thus charged. After the lights 11 and 12 have been switched on, the emitter of the transistor T ^ The potential + is applied via the line 33 and the resistor R ^. The transistors T ^ and Tp switch by so that the relay 16 picks up. The capacitor CL discharges through the resistors Rp and R ^. The relay thereby switches off and ends the operation of the luminaire cleaning system. The repetition will then be how

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in the preceding "described, for a predetermined Time excluded.

The following describes the switch-on lock for operation when closing the light switch. 13 and thus the application of the + potential to the terminal 1o is described in more detail. The following switching state is assumed: The potential + is applied to terminal 31, i.e. the ignition is switched on via the ignition switch 15. The potential is applied to terminal 9 - and the wiper rotor is in its end position. Of the Thyristor T is blocked. "

The thyristor T must switch through so that the electronic circuit of the program generator for the luminaire cleaning system is connected to the + potential. This happens when the push button switch 1 is actuated. Then the transistor T ^ receives the potential - via the terminal 7 and the resistor R ^ Q * ^{1 of its base.} The transistor T # switches through and thereby also the thyristor T at the same time. After releasing the pushbutton switch, the transistor T ^ blocks. However, the thyristor T is turned _t long as it is via the terminal 31 to the potential +, 'so that after switching on the lights, the lights cleaning system is only set in operation if in advance by operating the key switch 1 while switching the wind 'Protective window cleaning system 3o at the connection 7 of the program generator 8 the potential - had been applied.

Claims;

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Claims (4)

Patent claims: "(Λ ."} Light cleaning system for motor vehicles, in particular headlight cleaning system, which can be put into operation via switching means directly by switching on the lights and / or when operating the lights by switching on a windshield cleaning system, characterized in that the switching means ( Program generator 8) are designed and arranged in such a way that ·. \ a) the operation of the luminaire cleaning system when it is switched on the lights (11, 12) exclusively after; previous operation of the windshield - cleaning system (3o) and / or "", .-. b) the repetition of the operation of the lamp cleaning system only for a predetermined time after." a previous operation of the same and / or c) this repetition only after the windshield cleaning system has been used one or more times (3o) is effected. 2. lights cleaning system according to claim 1, characterized in that that the switching means (program transmitter 8) electrical and / or electronic locking or delay switch elements included. 3. lights cleaning system according to claim 1 and 2, characterized in that the locking and / or delay switching elements are combined with a program transmitter (8) that controls the automatic operation of the lamp cleaning system triggers. and controls. 4. lights cleaning system according to claim 3, characterized in that that the program encoder (S) controls a through the windshield cleaning system (3o) - 14 ■ 509818 / 0-5 04 Baren holding circuit (T, FLρ, PL ^ and Tr) and / or counting circuit has through which a connection to the circuit of the lights (11, 12) and / or the ignition circuit (ignition switch 15) is controlled. Lights cleaning system according to one of Claims to 4, characterized in that for the lights cleaning system and the. Windshields — Reini— '. ^; transmission system (3o) a common actuating switch (push button 1) is provided, which in a first holding position (connection of connections 4 .and 4 *) "directly the circuit of the windshield cleaning system (3o) and via the program transmitter (8) if necessary . also energizes the circuit of the luminaire cleaning system, and in a second switch position (connection of connections 6 and 6 ¹ ), bypassing the delay and / or counting elements of the program generator (8), it also sets the circuit of the luminaire cleaning system puts on tension. 50981870604 Leefs.page