JPH0330537B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [1] Technical Field The present invention relates to a spray-type cleaning device that sprays different types of cleaning liquids from the same nozzle through the same hose path to clean a window glass or the like.

[2] Prior Art Conventionally, spray-type cleaning devices have been used that spray cleaning liquid onto a window glass, etc., and operate a wiper to remove mud and dust attached to the glass. The structure shown in is known.

The cleaning device shown in FIG. 1 is provided with one cleaning liquid tank 1, and a front wiper pump 2 and a rear wiper pump 3 are separately installed in this cleaning liquid tank 1. The same cleaning liquid is supplied to the front wiper and the rear wiper through the respective wipers for cleaning. The cleaning liquid from the front wiper pump 2 is injected from the front wiper nozzles 6 and 7 through the front wiper hose 4, the check valve 9, and the T-shaped joint 10. On the other hand, the cleaning liquid from the rear wiper pump 3 is injected from the rear wiper nozzle 8 via the rear wiper hose 5. Although not shown, each of the motors that drive the front wiper pump 2 and the rear wiper pump 3 is configured to be operated by a separate front washer switch or rear washer switch, respectively. ing. That is, the cleaning device shown in FIG. 1 has a structure in which the same cleaning liquid from the same tank is separately injected by two pumps operated by separate switches.

In addition, the cleaning device shown in Figure 2 has two tanks that store different cleaning liquids, pumps are installed in each tank, and a dual injection nozzle installed at the end of the hose is connected to the same pump through separate hoses. The structure is such that different cleaning liquids are sprayed onto the glass surface. In other words, tank 1 containing ordinary cleaning liquid
From there, the cleaning liquid is injected into the hose 4 by the cleaning liquid pump 2, and the nozzle 1 of the dual injection nozzles 13 and 14 at the end of the hose via the T-shaped joint 10A.
It is injected from 3A and 13B. In addition, the strong cleaning liquid is sent from the tank 11 containing the strong cleaning liquid to the twin injection nozzles 13, 14 via the hose 5 and the T-shaped joint 10B by the high pressure pump 12 for high viscosity.
It is injected from the nozzles 14A, 14B. In addition,
The nozzle portions of the dual injection nozzles 13 and 14 have different shapes depending on the viscosity of the cleaning liquid used.

In such conventional jet cleaning equipment,
The structure was such that the same type of cleaning liquid and different types of cleaning liquid were sent from the pump using separate hose paths and sprayed from separate nozzles.
The hose route became complicated and it was necessary to provide a large number of injection nozzles. In addition, when using a powerful cleaning solution, as this powerful cleaning material contains silicon powder and polishing powder, if the tip of the nozzle dries, it is likely to become clogged. There was a problem that the cleaning liquid would not be sprayed.

[3] Object and structure of the invention The present invention has been made focusing on the above points,
A first motor that drives a wiper for the purpose of simplifying a hose route for supplying a cleaning liquid and eliminating clogging of a nozzle, and a first tank that accommodates a first cleaning liquid;
a second tank containing a second cleaning liquid having a stronger cleaning power than the first cleaning liquid; an identical injection nozzle for injecting both the cleaning liquids; an identical hose path for guiding both the cleaning liquids to the injection nozzle; a second motor that drives the cleaning liquid injection pump;
a third motor for driving a cleaning liquid injection pump; a switch means for directing the third motor; and when the switch means is turned on, power supply to the first motor is started after a first delay time, and the first motor is turned off. Then, after the second delay time, the first
and a second timer means for starting power supply to the second motor after a third delay time when the switch means is turned ON and stopping the power supply after a fourth delay time when the switch means is turned OFF. When the third delay time is set longer than the first delay time and the second delay time is set longer than the fourth delay time, and the switch means is turned on, each motor is switched to the third, first, and second motors. When the switch means is turned off, the third motor, second motor, and first motor are stopped in this order.

[4] Embodiments Examples of the present invention will be described below based on the drawings.

FIG. 3 shows an embodiment of the spray cleaning device according to the present invention.

The normal cleaning liquid from the cleaning liquid tank 1 is passed from the cleaning liquid pump 2 to the hose 4A and the check valve 9A, and the strong cleaning liquid from the strong washing tank 11 is sent from the strong washing liquid pump 12 to the hose 4B and the check valve. After passing through 9B, each T-type joint 1
It is connected to one hose path 5 by 0A, and is further connected to the injection nozzle 6 through a T-shaped joint 10B.
7, and even if either the cleaning liquid pump 2 or the powerful cleaning liquid pump 12 is activated, cleaning liquids with different cleaning capacities are injected from the same injection nozzle 6, 7, and both pumps 2, 12 When both are activated at the same time, the mixed liquid is injected. That is, check valves 9A and 9B are provided on the hoses 4A and 4B coming out from the pumps 2 and 12 separately provided, respectively.
After passing through these check valves 9A and 9B, the cleaning liquids are connected to one hose path 5 by a T-shaped joint 10A, so that cleaning liquids having different cleaning capacities are injected from the same injection nozzle 6 and 7.

In the embodiment shown in FIG. 3, the pumps 2 and 12 are provided with check valves 9A and 9B, respectively. However, if the pumps themselves have check valves, It goes without saying that the check valve provided on the side of the pump having the same structure can be omitted. According to the above configuration, even if strong cleaning liquid remains in one hose path 5, the remaining strong cleaning liquid can be washed away by sending a normal cleaning liquid, so a strong cleaning liquid with a strong viscosity is used. Even if the tip of the nozzle comes into contact with air, it dries and can prevent problems such as clogging.

Next, a general method of operating this apparatus having the above-described configuration will be explained.

A strong cleaning liquid switch (not shown in FIG. 3) is turned on to operate the powerful cleaning liquid pump 12. As a result, the normal cleaning liquid remaining in the hose path 5 is first pushed out and the glass surface is wetted, and then the strong cleaning liquid is sprayed. Next, the wiper motor is activated to wipe the glass surface with a powerful cleaning solution. Thereafter, the normal cleaning liquid pump 2 is operated to push out the strong cleaning liquid remaining in the hose path 5, and the glass surface is washed twice with this strong cleaning liquid. Then, the injection nozzles 6 and 7 are cleaned with the normally supplied cleaning liquid, and this cleaning liquid is sprayed onto the glass surface to wash away the strong cleaning liquid left on the glass surface, and the glass surface is wiped with a wiper. .

Fig. 4 is an example of an automatic cleaning circuit that automatically performs a series of operations of the cleaning device according to the present invention.Even when using only ordinary cleaning liquid, the circuit can be operated independently by changing a switch. It's summery. In the figure, M ₁ is the wiper motor, M ₂ is the drive motor for the normal cleaning liquid pump, M ₃ is the drive motor for the powerful cleaning liquid pump, and SW ₁ is the wiper motor.
This is the switch for operating _M1 . Wiper motor _M1
The operating switch SW ₁ is a two-stage switch, and by switching between "HI" and "LOW", the rotation speed can be changed in two stages. The cam switch CS constitutes an automatic fixed position stopping mechanism for the wiper, and the cam plater CP is linked with the wiper motor _M1 , and the contact point a is opened and closed each time it rotates. Since the stop position is determined by the convex portion of the cam plate CP, the convex portion and the wiper plate are configured to stop at a fixed position.

The mode changeover switch SW used in the automatic cleaning circuit shown in Fig. 4 is in manual position S ₁ ,
It consists of a 3-position switch: off-position S ₂ and auto-position S ₃ . Now, the operation when the switch SW is set to auto position _S3 will be explained based on the timing chart shown in FIG. In Fig. 5, A is the timing chart of relay L ² , B is relay L ₁ , C is motor M ₃ , D is motor M ₂ , E is wiper motor M ₁ , and F is the timing chart of switch SW at auto position. .

When the switch SW is connected to the auto position S ₃ at the timing shown in Fig. 5C, power is first supplied to the motor _M3 from the battery as shown in Fig _. Supplied. And the time constant of the timer circuit T ₁ (C ₁
After the time determined by × _R1 ) has elapsed, the relay _L1 is energized as shown in Figure 5B, its contacts are closed, and power is supplied to the wiper motor _M1 , and at the timing shown in Figure 5E. Wiper motor _M1 is activated. At this time, timer circuit T ₂ also operates at the same time, but since the time constant of timer circuit T ₂ is set longer than the time constant of timer circuit T ₁ (C ₁ ×
R ₁ < C ₂ × R ₂ ), the timer circuit T ₁ operates later than the timer circuit T 1 , and after the time determined by the time constant (C ₂ × R ₂ ) has elapsed, the relay L ₂ is energized as shown in Figure 5A. Ru.
When relay L ₂ is energized and its contacts are closed,
The motor _M2 that drives the normal cleaning liquid pump operates at the timing shown in FIG. 5D, and since the relay _L1 is in the energized state at this time, the wiper motor _M1 also operates.

When the switch SW is turned off and becomes the off position _S2 , the motor _M3 stops operating, but during the period when the relay _L2 is energized by the residual charge stored in the capacitor _C2 of the timer circuit _T2 , the motor M3 stops operating.
_M2 is activated. When the relay _L2 is de-energized and its contacts are closed, the motor _M2 stops operating. Then, the timer circuit T ₁ capacitor C ₁ is discharged, and the wiper motor M ₁ operates while the relay L ₁ is energized and stops after wiping off the cleaning liquid sprayed on the glass surface. .

Note that when using only a normal cleaning liquid, the switch SW may be set to manual position _S1 . In this case, the motor M ₂ is activated and the normal cleaning liquid is injected, and the time constant of the timer circuit T ₁ (C ₁
After the time determined by ×R ₁ ) has elapsed, relay L ₁ is energized and wiper motor M ₁ is activated.

[6] Effects of the Invention As explained above, in the present invention, when the operating switch is turned on, the strong cleaning liquid is first injected, then the wiper blade is operated, and then the normal cleaning liquid is injected. As a result, the oil film on the glass surface is first washed off by the powerful cleaning liquid, resulting in strong cleaning power. In addition, when the operating switch is turned off, the powerful cleaning liquid is first stopped spraying, then the normal cleaning agent is stopped, and finally the wiper blade is stopped, so that the strong cleaning liquid remaining on the inner wall of the hose and the nozzle area can be removed as normal. It can be washed away with cleaning fluid and prevent nozzle clogging. Furthermore, the glass surface is also cleaned with a strong cleaning solution and then with a regular cleaning solution.
Finally, since the glass surface is wiped away with a wiper blade, the glass surface dries quickly and there are no streaks caused by the cleaning liquid even after drying.

[Brief explanation of the drawing]

1 and 2 are perspective views of a conventional jet-type cleaning device, FIG. 3 is a perspective view of an embodiment of the jet-type cleaning device according to the present invention, and FIG. 4 is a perspective view of an embodiment of the jet-type cleaning device according to the present invention. FIG. 5 is a timing chart illustrating the operation of the automatic cleaning circuit. 1... Tank for cleaning liquid, 2... Pump for cleaning liquid, 5... Hose path, 6, 7... Injection nozzle,
11... Tank for strong cleaning liquid, 12... Pump for strong cleaning liquid, SW... Mode changeover switch, SW ₁
...Switch for wiper motor, M ₁ ...Wiper motor, M ₂ ...Switch for pump motor for normal cleaning liquid, M ₃ ...Switch for pump motor for strong cleaning liquid, T ₁ , T ₂ ... Timer circuit, L ₁ , L ₂ …
…relay.

Claims (1)

[Claims] 1 a first motor that drives a wiper;
a first tank containing a cleaning liquid, and a second tank containing a second cleaning liquid having stronger cleaning power than the first cleaning liquid.
a tank, an identical injection nozzle for injecting both the cleaning liquids, an identical hose route for guiding both the cleaning liquids to the injection nozzle, a second motor for driving the injection pump for the first cleaning liquid, and a second motor for driving the injection pump for the first cleaning liquid. a third motor that drives a cleaning liquid injection pump;
a switch means for starting a motor, and when the switch means is turned ON, power is started to be supplied to the first motor after a first delay time; when the switch means is turned OFF, power is supplied to the first motor;
a first timer means for stopping power supply to the second motor after a third delay time; and when the switch means is turned on, power supply to the second motor is started after a third delay time;
and a second timer means for stopping the power supply after a fourth delay time when turned off, the third delay time being longer than the first delay time, and the second delay time being longer than the fourth delay time. When the respective settings are made and the switch means is turned on, each motor operates in the order of the third, first and second motors, and when the switch means is turned off, the third, second and first motors are stopped in the order. Characteristic spray type cleaning device.