JPH0857366A - Washing gun - Google Patents

Abstract

PURPOSE: To provide a washing gun whose washing power is strong and in which the occurrence of rust is prevented. CONSTITUTION: Inside a gun body 3, a liquid flow passage 9 in communication with a washing liquid feeding port 7 and a washing liquid ejecting port 5, and an air flow passage 10 in communication with an air feeding port 8 and an air ejecting port 6 are formed. In the liquid flow passage 9, the 1st and the 2nd liquid valves 13, 16 for opening and closing the liquid flow passage 9, engaged with the advance and the retreat of a trigger 4 are installed. In the air flow passage 10, an air valve 21 for opening and closing the air flow passage 10, engaged with the advance and the retreat of the trigger 9 is installed. With the trigger 4 being let loose, the 1st liquid valve 13 and the air valve 21 are closed and the 2nd liquid valve 16 is opened. When the trigger 4 is pulled a little, the 1st liquid valve 13 is opened. When the trigger 4 is further pulled, the air valve 21 is opened, and when the trigger 4 is further pulled from that position, the 2nd liquid valve 16 is closed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a cleaning gun for cleaning automobile brakes and clutches.

[0002]

2. Description of the Related Art Generally, when cleaning a brake or the like in an automobile maintenance shop, a steam cleaning device in which a cleaning gun is connected to a steam generator via a hose is used to remove the steam ejected from the tip of the cleaning gun. Clean it by spraying it on the brakes.

However, since the cleaning gun of this apparatus can inject only steam, the cleaning power is not sufficient, and it takes a long time to dry after cleaning, and rust may occur.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention
It is an object of the present invention to provide a cleaning gun that has strong cleaning power and prevents the generation of rust.

[0005]

In order to solve the above-mentioned problems, the present invention comprises a gun main body having a grip portion and a barrel, and a trigger provided on the gun main body so as to be movable back and forth with respect to the grip portion. And a cleaning liquid ejection port is provided at the tip of the barrel, and an air ejection port surrounding the cleaning liquid ejection port is provided.
A cleaning liquid supply port and an air supply port are provided in the gun body, and a liquid flow path communicating with the cleaning liquid supply port and the cleaning liquid ejection port and an air flow path communicating with the air supply port and the air ejection port are formed inside the gun body. Then, a first liquid valve and a second liquid valve for opening and closing the liquid flow passage in association with the advance / retreat of the trigger are provided in the liquid flow passage, and the first liquid valve and the second liquid valve are provided in the air flow passage in conjunction with the advance / retreat of the trigger. An air valve for opening and closing the air flow path is provided, and the first liquid valve and the air valve are closed when the trigger is released, the second liquid valve is opened, and the first liquid valve is opened when the trigger is slightly pulled. When you pull the trigger, the air valve opens,
When the trigger is further pulled from that state, the second liquid valve is closed.

[0006]

When the cleaning gun according to the present invention is used to clean an object to be cleaned such as a brake, pressurized cleaning liquid is fed from the cleaning liquid supply port and high pressure air is fed from the air supply port.

When the trigger is released, the second liquid valve is open, but the first liquid valve and the air valve are closed, so that the flow paths are blocked and the cleaning liquid and air are not jetted.

When the tip of the barrel is directed toward the object to be cleaned and the trigger is pulled a little, the first liquid valve is opened, the liquid flow path is opened, and the cleaning liquid is poured from the cleaning liquid jet port to the object to be cleaned. This cleaning liquid wets and lifts dirt such as mud clinging to the object to be cleaned.

When the trigger is further pulled, the air valve is opened, the air flow path is also opened, and the cleaning liquid is jetted toward the object to be cleaned together with the high-pressure air jetted from the air jet outlet, and the dirt is washed away.

After the dirt is removed, pull the trigger further to get the second
The liquid valve is closed, the liquid flow path is blocked, the jet of the cleaning liquid is stopped, and only high-pressure air is jetted toward the object to be cleaned. The air causes the object to be cleaned to dry quickly.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIGS. 1 and 2, a cleaning gun according to the present invention includes a gun body 3 having a grip portion 1 and a barrel 2, and a trigger provided on the gun body 3 so as to be movable back and forth with respect to the grip portion 1. It consists of 4 and.

A cleaning liquid ejection port 5 is provided at the tip of the barrel 2.
And an air ejection port 6 surrounding the cleaning liquid ejection port 5. On the other hand, a cleaning liquid supply port 7 is provided at the base of the barrel 2.
Is provided, and an air supply port 8 is provided on the bottom surface of the grip portion 1. Inside the gun body 3, there are formed a liquid flow passage 9 communicating with the cleaning liquid supply port 7 and the cleaning liquid ejection port 5, and an air flow passage 10 communicating with the air supply port 8 and the air ejection port 6.

Inside the liquid flow path 9, there is provided a first liquid valve 13 including a needle 11 that moves forward and backward together with the trigger 4 and a valve seat 12 located in front of the needle 11. Further, in the liquid channel 9, a valve body 14 formed on the needle 11 and
A second liquid valve 16 including a valve seat 15 located behind it is provided. The distance between the tip of the needle 11 and the valve body 14 is smaller than the distance between the valve seat 12 and the valve seat 15. The needle 11 and the trigger 4 are constantly pressed forward by the spring 17.

In the air flow path 10, an air valve 21 is provided, which includes a valve body 19 that moves forward and backward together with the trigger 4 via a rod 18, and a valve seat 20 located in front of the valve body 19. The valve body 19 is constantly pressed forward by the spring 22. A space is provided between the rod 18 and the trigger 4, and this space is smaller than the space between the valve body 14 and the valve seat 15.

To use the above cleaning gun, as shown in FIG. 6, the cleaning liquid is fed from the cleaning liquid tank 30 to the cleaning liquid supply port 7 via the liquid hose 31, and the air is supplied from the compressor (not shown) via the air hose 32. High-pressure air is sent into the supply port 8.

The cleaning liquid tank 30 is connected to a compressor via a pressure adjusting valve 33, and high-pressure air sent from the compressor is decompressed by the pressure adjusting valve 33 and sent into the cleaning liquid tank 30. The pressure causes the cleaning fluid to be delivered to the cleaning gun.

When the trigger 4 is released, the second liquid valve 16 is open, but the first liquid valve 13 and the air valve 21 are closed, so that the flow paths 9 and 10 are shut off and the cleaning liquid and Air does not blow out.

When cleaning the object to be cleaned such as the brake, when the trigger 4 is slightly pulled with the tip of the barrel 2 toward the object to be cleaned, as shown in FIG. 3, the first liquid valve 13 is opened and the liquid flow path is opened. 9 is opened, and the cleaning liquid is poured from the cleaning liquid ejection port 5 onto the object to be cleaned. This cleaning liquid wets and lifts dirt such as mud clinging to the object to be cleaned.

The liquid channel 9 is provided at the tip of the barrel 2.
If the cleaning liquid is sprayed, the cleaning liquid will be atomized.
The object to be cleaned can be moistened over a wide range by being jetted from.

When the trigger 4 is further pulled, as shown in FIG. 4, the air valve 21 is opened, the air passage 10 is also opened, and the cleaning liquid is directed to the object to be cleaned together with the high-pressure air ejected from the air ejection port 6. It is sprayed and the dirt is washed away.

After the dirt is removed, pull the trigger 4 further,
As shown in FIG. 5, the second liquid valve 16 is closed, the liquid channel 9 is shut off, the ejection of the cleaning liquid is stopped, and only high-pressure air is ejected toward the object to be cleaned. The air allows the object to be cleaned to be dried quickly.

In addition, casters 3 are added to the cleaning liquid tank 30.
If 4 is provided, the work place is not limited because it can be easily moved.

[0023]

[Effect] As described above, according to the present invention, since the configuration is as described above, by gradually increasing the trigger amount, the injection of only the cleaning liquid to the injection of the high pressure air and the cleaning liquid, and the further high pressure It is possible to switch to the injection of only the air, and excellent cleaning power can be obtained.

Further, since the object to be cleaned can be dried quickly, rust can be prevented from occurring.

Further, the maneuverability is excellent and the working efficiency is remarkably improved.

[Brief description of drawings]

FIG. 1 is a sectional view showing a state in which a first liquid valve and an air valve of the embodiment are closed and a second liquid valve is opened.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view showing a state in which the first liquid valve of the same is opened.

FIG. 4 is a cross-sectional view showing a state in which the above air valve is opened.

FIG. 5 is a sectional view showing a state in which the second liquid valve of the above is closed.

FIG. 6 is a view showing a state where the cleaning liquid tank is connected to the above.

[Explanation of symbols]

 1 Grip part 2 Barrel 3 Gun body 4 Trigger 5 Cleaning liquid jet 6 Air jet 7 Cleaning liquid supply 8 Air supply 9 Liquid flow path 10 Air flow 13 First liquid valve 16 Second liquid valve 21 Air valve

Claims (1)

[Claims] 1. A gun body having a grip portion and a barrel,
A trigger provided on the gun body so as to move back and forth with respect to the grip portion, a cleaning liquid jetting port and an air jetting port surrounding the cleaning liquid jetting port are provided at the tip of the barrel, and the washing liquid is supplied to the gun body. A mouth and an air supply port, and a liquid flow path communicating with the cleaning liquid supply port and the cleaning liquid ejection port and an air flow path communicating with the air supply port and the air ejection port are formed inside the gun body. A first liquid valve and a second liquid valve for opening / closing the liquid flow path in association with the advance / retreat of the trigger are provided therein, and the air flow path is opened / closed in the air flow passage in conjunction with the advance / retreat of the trigger. When the air valve is provided and the trigger is released, the first liquid valve and the air valve are closed, the second liquid valve is opened, and when the trigger is pulled a little, the first liquid valve and the air valve are opened.
A washing gun in which the liquid valve opens, the air valve opens when the trigger is pulled further, and the second liquid valve closes when the trigger is pulled further from that state.