JPH02306852A - Window washer device - Google Patents

Abstract

PURPOSE:To perform the injection of washings efficiently even at the time of high speed running by changing the voltage of the power supply applied to a window washer pump by a change over switch. CONSTITUTION:A battery 5 is connected to the motor 10 of a window washer pump 9 through a washer switch 8 formed of a switch 6 and a rheostat 7. The resistance value of the rheostat 7 is changed by the position of an operating lever, and the rotation of the motor 10 of the washer pump 9 is changed by this resistance value, thus changing the injection quantity (jet velocity) of washings from an injection nozzle 4. At the time of high speed running, the washings flow upward from the jet position by wind pressure, and the motor 10 at this time is controlled to weaken the speed of the washings, so that the washings arrive downward, and the whole surface is wiped by a wiper. Wiping can be thus performed effectively at the time of full running.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application 'If) The present invention is applicable to cleaning of windshields of automobiles etc. as t.
This relates to a window washer device used in s.

(Prior Art) As shown in FIG. 7, a wiper 3 is provided on a curved portion of a windshield 2 of an automobile 1, and is designed to wipe away raindrops adhering to the windshield 2. A window washer device is also installed to remove dirt, dust, insects, etc. that fly from the front. This window washer 'AilT injects the washing i1+ liquid sent out from a tank by a pump toward the windshield 2 from the injection nozzle 4, and wipes it with the wiper 3 to clean it. The spray nozzle 4 has its nozzle hole angled so as to spray the cleaning liquid toward a position slightly higher than the center of the two locations on the windshield 2.

(Problems to be Solved by the Invention) In the conventional wiper and window washer device 1'I as described above, the direction of the nozzle hole of the injection nozzle 4 is such that the wind blows from the front when the vehicle is stopped or when driving in a city. Not accepted,
Alternatively, it may be set to anticipate a situation in which it will not be affected very strongly even if it is received. That is, under these conditions, the sprayed cleaning liquid hits near the two edges of the windshield 2, as shown by the X mark in FIG. Because it overcomes the wind force, it flows over the surface and falls.

The wiper 3 that operates at this time spreads the cleaning liquid over the entire plate, thereby effectively wiping and cleaning the surface of the windshield 2.

However, when a car runs at high speed, there are the following problems. That is, when driving at high speeds, the wind force from the front indicated by the arrow in Figure 9 overcomes the gravity of the cleaning fluid sprayed from the spray nozzle 4, so the sprayed cleaning fluid is pushed upwards and reaches the roof, causing damage to the blades. will not be sufficiently distributed. If the cleaning liquid does not spread to the blades, not only will the wiper not move smoothly, but also there is a problem that mud and dust that does not wash off will damage the surface of the windshield 2.The present invention has been developed in view of this point. The objective is to provide a window washer device that can efficiently remove dirt not only when the vehicle is stopped or when driving around town, but also when driving at high speeds.

(Means for Solving the Problems) As a means for solving the above problems, the present invention provides a window washer device using a window washer pump having an electrically driven structure. A mechanism is provided to change the voltage or active power of the power supply! It is a simple thing.

(For I) With this configuration, the voltage or active power of the power supply applied to the window washer pump is
Therefore, when driving at high speed, the injection capacity is lowered so that the point at which the cleaning liquid hits the windshield surface (, Lice #11I
By making sure that it hits just the right spot when it is raised, the cleaning fluid from the window washer pump can be effectively sprayed onto the windshield under all driving conditions, from low speed to high speed. You will be able to do that.

(Example) An example of the present invention will be described below with reference to FIG. 5
is a battery, which is mounted in the engine compartment of an automobile and supplies power to various electrical loads through a circuit (not shown). This battery 5 has a switch 6
A motor 10 of a window washer pump 9 is connected to the window washer pump 9 via an washer switch 8 consisting of a variable resistor 7 and a washer switch 8 .

The variable resistor 7 may be one whose resistance value changes continuously, or
It may be one in which the resistance value changes stepwise (one with taps at multiple locations with different resistance values).

This variable resistor 7 is connected to the operating lever + as shown in FIG.
1 myself! By installing it on the steering column 12 of the tlJrt and changing its position (inclination), for example, it can be adjusted such that ■ means it stops, ■ means it operates weakly, and ■ means it operates strongly, as shown in Figure 3. A conceivable method would be to provide a knob 13 on the operating lever 11 and to obtain the states (1), (2), and (2) above by pressing the knob 13. The window washer pump 9 guides the washer liquid 15 in the tank 14 to the injection nozzle 4 when the motor IO is activated.

What is shown in FIG. 4 is another embodiment of the present invention. In this case, a motor 10 with a tap is used, and a changeover switch 16 is connected between the motor 10 and the battery 5 to control the rotational speed of the motor IO. Changeover switch 16
The operating method is the same as that shown in Fig. 1. What is shown in FIG. 5 is still another embodiment of the present invention, in which the number of revolutions of the motor IO can be controlled steplessly by connecting a control unit 17. is the direct current from battery 5,
By converting it into an in wave, a pulse wave, or an fjA tooth wave, the effective power to the motor 91 is changed.

In the window washer device n of the present invention configured as shown in FIG. 1 or FIG. By changing , the rotation speed of the motor 10 of the window washer pump 9 can be changed. In other words, if the rotation speed is increased, the cleaning liquid from the injection nozzle 4 will hit the upper part of the windshield 2, and if the rotation speed is lowered, it will only reach the lower part of the windshield 2 (6th X in the diagram
).

When driving at high speeds, the cleaning liquid is designed to reach only the lower part of the windshield 2 as shown in Figure 6 (1-).
At this time, the cleaning liquid 5 flows from the center to the upper part of the windshield 2 as shown by the curved line due to the wind blowing onto the windshield 2 as shown by the arrow in the figure. Therefore, it becomes easier to wipe with the blade of the wiper 3. When driving at low speeds, adjust the rotation speed of the motor 10 of the shower bomb 9 to be high.As mentioned above, when driving at low speeds, there is almost no influence from the wind from the front, so the speed goes where the driver intended. can be sprayed.

In the embodiment shown in FIG. 5, the control unit 17 controls the DC current from the battery 5 as described above.
The effective power to the motor 10 is changed by converting it into a sine wave, a pulse wave, a sawtooth wave, etc. By appropriately selecting these waveforms, the jetting force of the cleaning liquid (for the windshield 2) can be changed. (reaching point of E) can be changed as appropriate. This allows III control similar to that shown in FIGS. 1 and 4.

In the embodiment described above, the voltage or active power of the power supply applied to the motor 10 of the window washer pump 9 was manually changed by the driver, but the present invention is not limited to this. It's not something you can do. The traveling speed of the vehicle may be determined by an electrical signal and the vehicle may be dynamically controlled according to the detection results.This way, the driver will not have to worry about anything. There is no.

(Effects of the Invention) Since the present invention is a window washer device configured as described above, the point at which the cleaning liquid is sprayed can be changed, so that the cleaning liquid can always be properly sprayed from a stationary state to a high-speed driving state. This ensures good forward visibility at all times. Since the structure is simple, it can be implemented easily and at low cost.

[Brief explanation of the drawing]

Fig. 1 is a system diagram of one embodiment of the present invention, Fig. 2 is a perspective view illustrating the mounting location of the switch drive mechanism in Fig. 1, and Fig. 3 is a modification of the one shown in Fig. 2. A perspective view showing
FIG. 4 is a system diagram of another embodiment of the present invention, FIG. 5 is a system diagram of still another embodiment of the present invention, and FIG. 6 is an explanation showing how the cleaning liquid of the present invention is sprayed onto the windshield. Figure 7 is a perspective view of a car showing the wiper and injection nozzle parts;
FIG. 8 and FIG. 9 are explanatory diagrams showing the state of spraying the cleaning liquid onto the windshield in the conventional type. l-Automobile 2~Windshield 3-Wiper 4-Injection nozzle 5-Battery 6-Switch 7-Variable resistor 8-Washer switch 9-Washer pump 10-Motor I6-Selector switch 17-Control unit patent Applicant Suzuki Motors Kogyo Co., Ltd. Figure 1 Figure 2 Figure 9 Riotshi γ Pump Figure 4 Figure 5

Claims (1)

[Claims] (1) A window washer device equipped with an electrically driven window washer pump, characterized in that the window washer device is provided with means for changing the voltage or active power of a power supply applied to the window washer pump.