JP2004175393A - Spray can in spray can system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the durability of a cap fitted on a mouthpiece and enables safe handling of residual air pressure. <P>SOLUTION: Pins 16 are arranged diagonally to be projected on the inner circumference of the cap 12. An O ring 13 is fitted on the inner circumference of the mouthpiece 8, while outer diameter slots 17, into which the pins 16 are fitted, are formed diagonally on the outer circumference of the mouthpiece 8. Each outer diameter slot 17 comprises an open slot, a residual pressure handling slot continuous with the open slot, and a locking slot 20 continuous with the residual pressure handling slot. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a filled spray can in a spray can system.
[0002]
[Prior art]
Spray cans for cleaning brakes used in automobile repair shops and the like are disposable, and disposal of empty cans and adverse effects on the environment due to released spray gas are problematic.
Therefore, a spray can has been proposed in which the brake cleaning liquid is filled and air is used instead of spray gas.
Examples of such spray cans that can be used repeatedly include those described in Japanese Patent Application Laid-Open No. 8-156984.
[0003]
[Problems to be solved by the invention]
However, in the spray can described in this publication, the cap attached to the base of the spray can body is of a screw type, and when the cap is made of plastic, there is a problem in durability.
Further, in the case of a filling type spray can, an air pressure enough to spray all of the injected cleaning liquid is guaranteed. Even when the cleaning liquid is injected and the operation is completed, the spray can has an air residual pressure. It is dangerous to remove the cap of the base in this state, and it is required that the residual pressure treatment can be performed safely.
[0004]
The present invention has been proposed in order to solve such problems of the conventional technology, and it is possible to improve the durability of a cap attached to a base and to provide a spray can that can safely perform air residual pressure treatment. The purpose is to provide.
[0005]
[Means for Solving the Problems]
First, the spray can system will be described with reference to FIG.
The portable spray can A can spray a liquid B such as a cleaning liquid therein by pressurized air. After the liquid B has been used up, a fixed amount of the liquid B in the liquid tank F is injected into the spray can A using the liquid injection tool H from the opening of the upper base after the cap D of the spray can A is removed. Thereafter, pressurized air is injected into the spray can A at a predetermined pressure from the pressurizing cylinder (pressurizing device) E using the air injecting tool G via the air injecting valve C at the bottom of the spray can A.
As described above, in the spray can system according to the present invention, since the liquid B and the pressurized air are filled, the spray can A can be used repeatedly.
[0006]
In the spray can according to the present invention in this spray can system, a pin is projected on a diagonal of the inner periphery of the cap, an O-ring is attached to the inner periphery of the base, and the pin is fitted to the outer periphery of the base. An outer diameter groove portion is formed diagonally, and the outer diameter groove portion includes an opening groove, a groove for residual pressure processing continuous with the opening groove, and a locking groove continuous with the residual pressure processing groove. In the state where the pin of the cap is fitted in the groove for locking, the cylindrical portion of the cap to which the injection valve is attached is fitted to the O-ring on the inner peripheral portion of the base, and the airtightness in the spray can body is reduced. When the pin of the cap is held in the groove for the residual pressure treatment, the cylindrical portion of the cap comes off the O-ring of the inner peripheral portion of the base, and the airtightness in the spray can body is released. It is assumed that.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a side view of a spray can according to the present invention, and FIG. 2 shows a partially cutaway sectional view of a base.
In these figures, a rubber base 2 for stably erecting the can main body 1 is attached to the outer peripheral bottom of the spray can main body 1, and a rubber protective band is provided on the outer peripheral upper part of the can main body 1. 3 is fitted.
In this spray can, by pressing the nozzle lever 4 attached to the upper part of the cap, the push button 6 of the injection valve 5 is pressed, and a liquid such as a cleaning liquid in the can is injected from the tip of the nozzle pipe 7 by pressurized air. It has become so.
[0008]
The cylindrical aluminum base 8 is fixed to the upper opening of the can main body 1 by fitting the upper opening edge 10 of the aluminum can main body 1 into the lower circular groove 9 and caulking.
An O-ring 13 as a sealing material for maintaining the airtightness of the inside of the can when the cap 12 is fitted into the base 8 is fitted into the circular groove 11 at the upper inner periphery of the base 8.
An opening edge 14 is formed at the upper end of the base 8, and a bulging outer edge 15 having a diameter larger than that of the opening edge 14 is formed at an outer peripheral portion below the opening edge 14.
[0009]
An outer diameter groove 17 into which the pin 16 on the inner circumferential side of the cap is fitted is formed diagonally on the bulging outer edge 15. The outer diameter groove portion 17 is formed to the depth of the opening edge portion 14, and as shown in FIGS. 3 and 4, an opening groove 18 is formed in the vertical direction at points 0 ° and 180 ° on the outer periphery of the base, and 30. Grooves 19 for residual pressure treatment are formed continuously from the opening grooves 18 at positions from ゜ to 60 ° and at positions from 210 ° to 240 °. Further, at the points of 90 ° and 270 °, a locking groove 20 is formed at a position lower than the groove 19 for residual pressure treatment by t and continuous with the groove 19.
[0010]
When the pin 16 on the cap 12 is fitted in the locking groove 20, the cylindrical portion 21 on the inner peripheral side of the cap is fitted on the O-ring 13 on the inner peripheral portion of the base, and the airtightness in the can body 1 is maintained. Will be done.
Further, when the pin 16 on the cap 12 side is fitted in the groove 19 for residual pressure treatment, the cylindrical portion 21 on the inner peripheral side of the cap comes off the O-ring 13 on the inner peripheral portion of the base, and the airtightness inside the can body 1 is reduced. Will be released.
[0011]
Next, the configuration of the cap 12 will be described with reference to FIG.
On the inner peripheral portion of the cap 12, a pin 16 that fits into the outer diameter groove portion 17 of the base 8 protrudes diagonally.
Further, a cylindrical portion 21 having a valve member 22 of the injection valve 5 attached to a central portion thereof is fixed to a bottom portion on the inner peripheral side of the cap 12. The push button 6 to which the nozzle pipe 7 is attached is inserted into the upper part of the valve member 22. Further, a tube 23 for sucking liquid is attached to a lower portion of the valve member 22.
[0012]
Next, the operation of the spray can configured as described above will be described.
First, after the cap 12 is removed and the opening of the base 8 is opened, a fixed amount of liquid is injected into the spray can body 1 from the liquid tank through this opening.
Thereafter, the pin 16 is positioned and inserted into the opening groove 18 of the base 8, and the cap 12 is turned until the pin 16 is positioned in the locking groove 20.
[0013]
In this state, the can body 1 is filled with pressurized air at a predetermined pressure from the air injection valve 24 at the bottom of the spray can body using a pressurizing device. When the inside of the can is pressurized, the cap 12 is pushed up by the internal pressure, and the pin 16 of the cap 12 is pressed and locked against the upper end of the locking groove 20 of the base 8 as shown in FIG.
In this state, the cylindrical portion 21 of the cap 12 is fitted to the O-ring 13 on the inner periphery of the base, and the sealing property in the can body 1 is maintained.
After the filling of the pressurized air is completed, by pushing the nozzle lever 4, the push button 6 of the ejection valve 5 is pressed, and the liquid in the can is ejected from the tip of the nozzle pipe 7.
[0014]
Even if all the liquid in the can has been sprayed, there is residual air pressure in the can. It is dangerous to remove the cap 12 in this state. Then, the cap 12 is loosened so that the pin 16 of the cap 12 is located in the groove 19 for the residual pressure treatment of the base 8. The groove 19 for residual pressure processing is formed to have a height higher by t than the groove 20 for locking. When the cap 12 is pushed up by the residual pressure of the air in the can until the pin 16 is pressed against the upper end of the groove 19, the cylindrical portion 21 of the cap 12 comes off the O-ring 13 of the base 8 as shown in FIG. The airtightness in the can body 1 is released, and the residual pressure in the can is released to the atmosphere.
After the residual pressure treatment in the can is performed safely, the cap 12 is removed from the base 8 and the liquid is injected into the can body 1.
[0015]
The following describes the air injection valve 24 with reference to FIG.
In the figure, an air injection valve indicated by reference numeral 24 is formed of a can interior 26 of a valve body 25, a nut 27 screwed into the can, a ball receiver 29, a spring 30, and a ball 31. And a mounting nut 26 and a can exterior 28 connected to the interior of the can.
A mounting nut 26 and a can exterior 28 connected to the nut are formed.
The air injection valve 24 composed of such members is fixed so that the mounting nut 36 outside the can is pressed against the bottom 11 of the spray can, and the bottom 11 is sandwiched by the nut 27 via the packing 32. .
[0016]
In the valve body, a ball 31 is formed so as to be seated on a valve seat 33 by a ball receiver 29 and a spring 30 pressing the ball receiver at a predetermined pressure. It should be noted that grooves 35 are formed on both sides of the arc ridge 34.
When air is injected into the spray can by the air injection valve 24 configured as described above, the ball 31 is pushed up by a valve push rod of an air injection device (not shown), and air is injected, but the valve push rod is removed from the ball 31. At this stage, the ball 31 is seated on the valve seat 33 to prevent leakage of air and liquid in the can.
[0017]
FIG. 8 shows a protective band, which is formed in a donut shape in cross section. The band 3 is made of an elastic material such as synthetic resin or rubber, and is attached to the body of the spray can.
FIG. 9 shows a rubber base designated by reference numeral 2. This base is mounted on the bottom of the spray can and functions as a stable seat, and is formed in a concave section with a flange 37.
[0018]
【The invention's effect】
As described above, according to the present invention, the cap is closed by fitting the pin on the inner circumference of the cap into the groove for locking on the outer circumference of the cap. Compared with this, there is an advantage that the fitting of the cap becomes firm and the durability can be improved.
[0019]
Further, if the pin on the inner peripheral portion of the cap is fitted into the groove for processing the residual pressure on the outer peripheral portion of the mouthpiece, the airtightness in the spray can body is released, and there is an advantage that the residual air pressure can be processed safely.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of a spray can according to the present invention.
FIG. 2 is a partially cutaway sectional view showing a mouthpiece of a spray can.
FIG. 3 is a development view showing an outer diameter groove portion of a base.
FIG. 4 is a plan view showing a base.
FIG. 5 is a cross-sectional view showing a state where the cap is locked to the base.
FIG. 6 is a cross-sectional view showing a state where air residual pressure processing is being performed.
FIG. 7 is an explanatory sectional view of a main part of an air injection valve.
FIG. 8 is a sectional view of a main part of the protection band.
FIG. 9 is a sectional view of a main part of a rubber base.
FIG. 10 is an explanatory view showing a spray can system.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Spray can main body 2 Rubber base 3 Protective band 4 Nozzle lever 5 Injection valve 6 Push button 7 Nozzle pipe 8 Cap 9 Circular groove 10 Upper opening edge 11 Circular groove 12 Cap 13 O-ring 14 Opening edge 15 Swelling outer edge Part 16 pin 17 outer diameter groove 18 opening groove 19 residual pressure processing groove 20 locking groove 21 cylinder part 22 valve member 23 liquid suction tube 24 air injection valve 25 valve body 26 can interior 27 screwed nut 28 can External 29 Ball receiver 30 Spring 31 Ball 32 Packing 33 Valve seat 34 Arc ridge 35 Passage groove

Claims (4)

Liquid is injected into the fixed amount spray can body from the opening of the base fixed to the upper end of the spray can body, and the opening of the base is closed with a cap with an injection valve, and then provided at the bottom of the spray can body. By injecting pressurized air at a predetermined pressure from the air injection valve, the spray can system can be used repeatedly.
A pin is projected on a diagonal of an inner peripheral portion of the cap, an O-ring is attached to an inner peripheral portion of the base, and an outer diameter groove portion on which the pin is fitted is formed diagonally on an outer peripheral portion of the base. The outer diameter groove portion includes an opening groove, a groove for residual pressure processing continuous with the opening groove, and a locking groove continuous with the residual pressure processing groove. When the pin of the cap is fitted to the cap, the cylindrical portion of the cap to which the injection valve is attached is fitted to the O-ring of the inner peripheral portion of the base, whereby the airtightness in the spray can body is maintained, and the residual pressure is maintained. In a state in which the pin of the cap is fitted in the processing groove, the cylindrical portion of the cap is disengaged from the O-ring of the inner peripheral portion of the base, and the airtightness in the spray can body is released. Spray cans in can systems. At the bottom of the spray can, the inside of the can of the valve body, a nut and a ball receiver 29, a spring and a ball screwed into the inside of the can are formed. An air injection valve formed externally. A donut-shaped protective band that is attached to the body of the spray can body to protect the spray can. A rubber base with a concave section with a flange that is attached to the bottom of the spray can body to stably stand the spray can.

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