RU2226469C2 - Vehicle headlight automatic protection device - Google Patents

Abstract

FIELD: transport engineering. SUBSTANCE: horizontal louvers consisting of protective slats with angle of opening equal to 90^o are installed bef0ore headlights. Slats of louvers are mechanically coupled with lever provided with electric drive with control unit. Said control unit includes, as louvers position control panel, headlight switch and high-low beam switch. Control unit is furnished with automatic louver slats adjusting circuit to provide setting of louver slats at angle to optical axis of headlight at high beam mode for shielding light of headlights at illumination by oncoming vehicle. Said circuit includes photosensor adjusted to low beam oncoming light at safe distance from oncoming vehicle, photosensor signal amplifier, and actuating relays providing switching on and off headlight shielding mode by signal of photosensor. Moreover, control unit contains disk contactor as limit switch of OPEN, CLOSED and MIDDLE positions of louvers. Said contactor is installed on shaft of one of two geared motors of electric drive with reversing electric motors. Invention improves safety on road owing to automatic changing over from high to low beam and back. Use of geared motors excludes errors caused by spread in parameters of electric motors. EFFECT: improved safety. 1 dwg

Description

The invention relates to vehicles, in particular to headlight protection devices and dimming of a vehicle.

Known protective device lighting device according to the patent of the Russian Federation No. 2140368. The disadvantage of this protective device is the driver’s distraction for switching from the main beam to the low beam and vice versa, which reduces road safety. When using electric motors as a blind, an error in operation accumulates, one headlight may open completely and another one will be closed [1].

A device for protecting headlights of a vehicle according to the USSR copyright certificate No. 1364513 is known. This device is selected as a prototype. The disadvantage of this device is the distraction of the driver to switch from the "high" light to the "dipped" and vice versa, which reduces road safety. The use of electric motors as a drive due to the scatter of parameters accumulates an error in the operation of protective devices [2].

The present invention solves the problem of improving road safety by automatically switching from the "main" beam to the "low" and vice versa, and the use of gear motors eliminates the error due to the variation in the parameters of electric motors.

To achieve the specified technical result in an automatic device for protecting the headlights of a vehicle, containing horizontal blinds located in front of the headlights, consisting of horizontal protective plates with an opening angle of 90 °, mechanically connected by a lever with an electric drive, equipped with a control unit, which includes a control panel the position of the horizontal blinds includes a headlight switch and a "far-dipped" light switch, and the control unit has an automatic circuitry installation of the louvre plates at an angle to the optical axis of the headlamp in the high beam mode for shielding the headlights when illuminated by oncoming vehicles, containing a photosensor configured for low beam and at a safe distance for the oncoming vehicles driver, a photosensor signal amplifier, electromagnetic actuating relays turning on and off the headlight shielding according to the photosensor signals, in addition, the control unit contains horizontal, “open”, “closed” and “average” horizontal positions as a limit switch alyuzi disc contactor mounted on the shaft of one of the two electric gearmotors comprising a reversible electric motors.

Comparison of the claimed technical solution with the prior art in scientific, technical and patent documentation in the main and related sections shows that the set of essential features of the claimed solution was not known, therefore, it meets the patentability condition “novelty”.

The analysis of known technical solutions in the art showed that the proposed device has features that are not available in the known technical solutions, and using them in the claimed combination of features makes it possible to obtain a new technical effect, therefore, the proposed technical solution has an inventive step compared to the existing level technicians.

The proposed technical solution is industrially applicable, because can be manufactured industrially, therefore, meets the patentability condition "industrial applicability".

The drawing shows a diagram of a device for protecting the headlights of a vehicle.

The device contains horizontal movable louvers 1 located in front of the headlights 2 with high and low beam lamps. The actuators of the blinds 1 are mechanically connected to the shafts of the gear motors 3, 4, at least one of which, for example, the shaft of the gear motor 3, is fitted with a contactor 5, consisting of two conductive plates 6, 7 mounted on a movable insulating base 8, and fixed clamping contacts 9, 10, 11, 12, 13. The positive terminal of the vehicle battery 14 is connected through normally closed contacts 15.1 and relay 15, contacts 9,13 and plate 6 of contactor 5 with the terminals 16 of the reversible electric motors of gear motors 3, 4 in any position contactor 5, cro e indicated on the drawing. Plus, the batteries 14 through the switch 17 "headlights" and contacts 18.1, 18.2, 18.3 of the switch 18 "main" and "dipped" of the vehicle, through the locking diodes 19, normally closed contacts 20.1 of the relay 20, contacts 10, 11, 12 and the plate 7 of the contactor 5 is connected to the terminals 21 of the motor reducers 3, 4 and in parallel through the locking diodes 22, to the relay coil 15. The device contains a photosensor 23, placed behind the windshield and configured for photosensitivity of the "passing" headlights from oncoming vehicles at a safe distance. The photosensor 23 is connected through the signal amplifier of the photosensor 24 to the coil of the actuating relay 20. The power supply of the amplifier circuit of the signal of the photosensor 24 is from the 18.2 high beam contact via one of the diodes 19. Structurally, the relay 15, 20, diodes 19, 22 are located in the canister 25 on the case of the gearmotor 3. The fixed positions 26, 27, 28 of the contactor 5 sequentially correspond to the positions "closed", "middle", "open" blinds 1.

The device operates as follows.

In the initial state, the switch 17 "headlights" is off, the contactor 5 occupies the position indicated in the drawing. Contact 9 is open, there is no voltage at contacts 10, 11, the blinds are in the "closed" position. When the switch 17 is turned on, the voltage from the contact 18.1 "low beam" of the switch 18 through the diodes 19, 22 turns on the relay 15, the contacts 15.2 of which opens the connection circuit of the terminals 16 of the gear motors 3, 4, through the contact 9 while the switch 17 is turned on. At the same time, the voltage from contact 18.1 "low beam" is applied to contact 10, closed by a plate 7 with contact 12, and turns on the electric motors of gear motors 3, 4 through the terminals 21 towards the opening of the blinds 1. The contactor 5 rotates in side 27 until the contact 10 opens and stops. Motor reducers 3, 4 fix the blinds 1 in position 27 "average". Headlights 2 are open for dipped beam lighting. When the switch 18 is turned on to position 18.2 "high beam", the voltage is applied to terminal 11, closed by a plate 7 with terminal 12, and again turns on the electric motors of gear motors 3, 4 through leads 21 to the opening side of the blinds 1. Contactor 5 rotates to side 28 until contact 11 opens and stop. In this case, contact 10 turns out to be a closed plate 6 with contact 18. Motor reducers fix the blinds 1 in the "open" position. Headlights "open to illumination" high beam ".

When the switch 18 is turned back to position 18.1 “low beam”, voltage is supplied to terminal 10 through terminal 13 and terminals 16 turn on the geared motors 3, 4 to the side of the blinds position 1 “middle”, and contactor 5 to the side 27 until contact 10 opens and stops . When this turns out to be closed contacts 11 and 12 to enable the gear motors 3, 4 in the position of the blinds 1 "open". When the switch 17 is turned off in any position of the contactor 5, the blinds 1 automatically close the headlights 2 due to the supply of a positive battery 14 through the normally closed contacts 15.2 of the de-energized relay 15 to the terminals 16 of the 3.4 geared motors. Contactor 5 is in its initial position. When the contacts 18.3 of the switch 18 are short-circuited, the “flashing” of the blinds 1 has time to occupy the “open” position, are kept in it in the “blinking” mode and are automatically closed when it is stopped. In the case of illumination of the vehicle with the light of oncoming vehicles with the closed contact 18.2 of the high beam switch 18 and the shutters 1 in the "open" position, the photosensor 23 is triggered, the signal of which is converted by the signal amplifier of the photosensor 24 to a voltage that includes a relay 20 for the duration of the signal of the photosensor 23 Contact 20.2 of relay 20 switches the voltage from open contact 11 to contact 10 and puts the contactor 5 in the middle position 27. Blinds 1 occupies the "middle" position and screens the upper part of the beam of the high beam p 2, preventing the "blindness" of the driver of oncoming vehicles. After the cessation of the oncoming light on the photosensor 23, the blinds 1 automatically move to the "open" position by returning the contact 20.1 of the relay 20 to its original position.

Thus, the presented device allows to increase road safety due to temporary automatic translation of the blinds from the "open" position to the middle position, which shields the upper part of the beam "high beam" headlights and eliminates the possibility of "dazzling" the driver of oncoming vehicles, without the need to manually switch to " dipped "back and forth, as well as through the use of gear motors connected through a contactor, eliminating the accumulation of errors in the position of the blinds due to the variation in the parameters of the electric motor Atelier. In addition, the lack of the need to switch the “far” - “dipped” light switches leads to the appearance of a new property in the device for protecting the headlights of a vehicle — an increase in the lamp life in the headlights.

Sources of information

1. RF patent No. 2140368, MKI B 60 Q 1/00, 1/14, publ. 10.27.99.

2. USSR Author's Certificate No. 1364513, MKI B 60 Q 1/00, publ. 01/07/88.

Claims (1)

An automatic device for protecting the headlights of a vehicle, comprising horizontal blinds located in front of the headlights, consisting of horizontal protective plates with an opening angle of 90 °, mechanically connected to a lever with an electric drive equipped with a control unit, which includes a light switch as a control panel for the position of the horizontal blinds headlights and dipped-beam switch, characterized in that the control unit has an electric circuit for automatically installing louvre plates At an angle to the optical axis of the headlight in the “high beam” mode for shielding the headlights when illuminated by oncoming vehicles, containing a photo sensor configured to “near” oncoming light at a safe distance for the oncoming vehicle driver, a photosensor signal amplifier, electromagnetic mode on and off executive relays screening the headlights according to the photosensor signals, in addition, the control unit contains as an end switch the positions “open”, “closed” and “middle” of horizontal blinds di a contactor mounted on the shaft of one of the two gear motors of the electric drive, containing reversible electric motors.

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