JPH0717367A - Washer device for headlight for vehicle - Google Patents

Abstract

PURPOSE:To effectively remove the muddy water adhering onto the lens plane of a headlight having a washer nozzle. CONSTITUTION:As for a vehicle which is constituted so that a washer nozzle 3 directed towards the lens plane of a headlight 1 is installed at the front part of the headlight 1, an auxiliary washer nozzle 16 separated from the washer nozzle 3 is installed in the upper part of the headlight 1. The muddy water which drips after injection can be removed by the liquid jetted by the main washer nozzle 3, by the auxiliary washer nozzle 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washer device for a vehicle headlamp, which is particularly applicable to an automobile traveling in a country or region where there is a lot of rain and snow.

[0002]

2. Description of the Related Art When an automobile runs through rain or melted snow, it is exposed to muddy water. When exposed to such muddy water, the headlamp located at the front of the vehicle body is most contaminated, and the transmittance of the lens is reduced. Therefore, a vehicle that travels in a country or region with a lot of rain or snow is equipped with a washer device on the headlamp voluntarily by order or by law (for the mounting structure of the washer nozzle, see Japanese Utility Model Publication No. Sho 60-39313). (See the official gazette).

FIG. 3 shows an outline of the structure and system in this case. To explain this, reference numeral 1 is a headlamp, which is mounted with its front facing. A bumper 2 is located below the headlamp 1, and a washer nozzle 3 which is a part of a washer device is attached to a part of the bumper 2. On the other hand, a hood 4 that covers the upper part of the engine room (not shown) is located above the headlamp 1.

A pump 6 is connected to the washer nozzle 3 via a pipe 5, and the pump 6 is connected to a tank 8 by a hose 7. A washer liquid is filled in the tank 8. The pump 6 is of an electric (or electromagnetic) type, and when the voltage is applied between the terminal 9 and the grounded terminal 10, the washer liquid is sucked from the tank 8 and sent to the washer nozzle 3. is there. The terminal 9 is connected to the output terminal 12 of the timer controller 11, and the voltage is applied for a predetermined time. The terminal 13 of the timer controller 11 is connected to the positive power supply and the terminal 14
Is connected to the ground circuit via the switch 15.

In the conventional washer device having such a structure, when the switch 15 is once closed (when the switch 15 is a push button type, it is pushed once), the pump 6 is operated for the time measured by the timer controller 11. Then
The washer liquid is ejected from the washer nozzle 3. The jet angle α of the washer liquid is set so as to cover the entire surface of the lens of the headlamp 1. When the washer liquid is sprayed on the lens surface, the muddy water attached to the lens surface is washed away, but if a wiper is provided at the front part of the headlamp 1, it can be more reliably cleaned.

FIG. 4 shows the operation timing of the washer device having the above construction. This figure shows the ON time of the switch 14, and if the switch 14 is turned on for a moment as described above, the pump 6 is turned on for a time T from that time, and the washer liquid is injected for that time. By the way, in EC countries, by law, headlamp cleaners are set to the minimum number that can satisfy the number of times (50 times) the washer fluid can be injected from the state where the tank was full and the light distribution recovery rate of the headlamp is Is determined not to run short.

As shown in FIG. 3, when the hood 4 is located above the headlamp 1 or when the headlamp has a large front slant as shown in FIG. 5, the lens is washed by the washer liquid. The mud that rises above the surface may become muddy water and drip from the hood 4. Further, it may be transmitted through the lens surface of the headlamp 1. When the muddy water drips in this manner, the mud adheres again to the lens surface that was once cleaned by the washer liquid, which deteriorates the light distribution recovery rate.

[0008]

Therefore, when the front shape of the headlamp has a lot of slants, the head lamp shown in FIG.
As shown in FIG. 3, it is conceivable to use a washer nozzle 3 that ejects from a higher position to increase the injection angle α, or to extend the injection time to fly the mud further. However, it is not preferable to use the washer nozzle 3 having a high height because it obstructs the light distribution of the headlamp 1. On the other hand, if the washer liquid injection time is lengthened, the tank capacity must be increased. However, this limits the layout of the vehicle, and this cannot be a remedy.

As a prior art, a nozzle drive motor is provided, and the nozzle drive motor raises the washer nozzle to inject the washer liquid onto the lens surface of the headlamp, and the washer nozzle can be withdrawn after the ejection. However, there is a problem that the nozzle drive motor and its control circuit are complicated. In addition, one nozzle provided with a plurality of injection ports is disclosed in Japanese Utility Model Publication No. 2-36626, but this proposal changes the injection range by colliding the washer liquid. Therefore, the object of the present invention cannot be achieved.

The present invention has been made in view of this point. Even if the front shape of the headlamp has a large amount of slant, it does not hinder the light distribution of the headlamp and effectively adheres mud. An object of the present invention is to provide a vehicular headlamp washer device for suppression.

[0011]

As a means for solving the above problems, the present invention provides a vehicle in which a washer nozzle facing the lens surface of the headlamp is provided in the front part of the headlamp. The auxiliary washer nozzle different from the above washer nozzle is provided on the upper part of the above.

Further, in a vehicle in which a washer nozzle facing the lens surface of the headlamp is provided at a front portion of the headlamp, an auxiliary washer nozzle different from the washer nozzle is provided above the headlamp, The injection pressure and the flow rate of the auxiliary washer nozzle are smaller than those of the main washer nozzle.

Further, in a vehicle in which a washer nozzle facing the lens surface of the headlamp is provided in the front portion of the headlamp, an auxiliary washer nozzle different from the washer nozzle is provided above the headlamp, The injection start timing of the auxiliary washer nozzle is set to be after the injection of the main washer nozzle.

[0014]

With this structure, it is possible to prevent the mud from adhering to the lens surface of the headlamp due to the washer liquid injection of the newly provided auxiliary washer nozzle. Moreover, the effect can be further enhanced by appropriately setting the injection pressure, the flow rate, and the injection timing of the auxiliary washer nozzle.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. 1 with the same or corresponding parts as in FIG. Reference numeral 1 denotes a headlamp, which is mounted with its front facing. A bumper 2 is located below the headlamp 1, and a washer nozzle 3 which is a part of a washer device is attached to a part of the bumper 2. On the other hand, a hood 4 that covers the upper part of the engine room (not shown) is located above the headlamp 1.

A pump 6 is connected to the washer nozzle 3 via a pipe 5, and the pump 6 is connected to a tank 8 by a hose 7. A washer liquid is filled in the tank 8. The pump 6 is of an electric (or electromagnetic) type, and when the voltage is applied between the terminal 9 and the grounded terminal 10, the washer liquid is sucked from the tank 8 and sent to the washer nozzle 3. is there. The terminal 9 is connected to the output terminal 12 of the timer controller 11, and the voltage is applied for a predetermined time. The terminal 13 of the timer controller 11 is connected to the positive power supply and the terminal 14
Is connected to the ground circuit via the switch 15.

In the present invention, an auxiliary washer nozzle 16 different from the washer nozzle 3 is provided above the headlamp 1 and below the front end of the hood 4. The auxiliary washer nozzle 16 is connected by a hose 17 to a pump 18 for the auxiliary washer nozzle. Since the pump 18 is connected to the tank 8 by the hose 7 together with the pump 6, if the pump 18 operates, the auxiliary washer nozzle 16
As shown in the figure, the downward washer liquid is ejected. The terminal 19 of the pump 18 is connected to the output terminal 21 of the timer controller 11, and the terminal 22 is connected to the ground circuit via the switch 23.

In the thus constructed apparatus, when the switch 23 is closed, the pump 18 is operated to inject the washer liquid from the auxiliary washer nozzle 16. Since this washer liquid is jetted downward, it is possible to effectively prevent mud from adhering to the lens surface of the headlamp 1. In order to further enhance the effect, it is preferable to have a relationship with the operation of the main washer nozzle 3.

One of them is an auxiliary washer nozzle.
The pressure and flow rate of 16 should be smaller than that of the main washer nozzle 3. This is an auxiliary washer nozzle
This is because the purpose of providing 16 is that a high pressure is not required because the only flowing muddy water is to flow downward, and the injection time can be short. From this, the pump 18 for the auxiliary washer nozzle 16 is the same as the pump 6 for the main washer nozzle 3.
Use one with lower pressure.

Another setting condition is to set a time such that the injection of the auxiliary washer nozzle 16 is started after the injection of the main washer nozzle 3. This is because the main washer nozzle 3 jets off the mud adhering to the lens surface, so it is more effective to delay it a little in time.

FIG. 2 shows the injection timing of the main washer nozzle 3 and the auxiliary washer nozzle 16. As is clear from the figure, the injection timing of the auxiliary washer nozzle 16 is the time t after the time T ₂ (several seconds) has elapsed after the injection of the main washer nozzle 3.

[0022]

Since the present invention is the vehicle headlamp washer device constructed as described above, it is possible to prevent the deterioration of the light distribution recovery rate due to the dripping of muddy water after the main washer nozzle is jetted. Become. Since the amount of washer liquid consumed can be reduced as compared with the case where muddy water is dropped by prolonging the injection time of the main washer nozzle, the increase in the capacity of the tank can be minimized.

[Brief description of drawings]

FIG. 1 is a system diagram of an embodiment of the present invention.

FIG. 2 is a time chart showing the operation timing of that of FIG.

FIG. 3 is a system diagram of a conventional washer device for a vehicle headlamp.

FIG. 4 is a time chart showing the operation timing of that of FIG.

FIG. 5 is a cross-sectional view for explaining the situation of another conventional example.

FIG. 6 is a cross-sectional view for explaining the situation of another conventional example.

[Explanation of symbols]

 1 Headlamp 3 Washer nozzle 6 Pump 8 Tank 11 Timer controller 15 Switch 16 Auxiliary washer nozzle 18 Pump 23 Switch

Claims (3)

[Claims] 1. A vehicle having a washer nozzle facing a lens surface of the headlamp in a front portion of the headlamp, wherein an auxiliary washer nozzle different from the washer nozzle is provided above the headlamp. A washer device for vehicle headlamps characterized by: 2. A vehicle in which a washer nozzle facing the lens surface of the headlamp is provided in the front part of the headlamp, and an auxiliary washer nozzle different from the washer nozzle is provided in the upper part of the headlamp, A headlamp washer device for a vehicle, characterized in that the injection pressure and the flow rate of the auxiliary washer nozzle are made smaller than those of the main washer nozzle. 3. A vehicle in which a washer nozzle facing the lens surface of the headlamp is provided in the front part of the headlamp, and an auxiliary washer nozzle different from the washer nozzle is provided in the upper part of the headlamp, A washer device for a vehicle headlamp, wherein the injection start timing of the auxiliary washer nozzle is set to be after the injection of the main washer nozzle.