JP2001158483A - Cap for aerosol container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eject the whole residual substance including gas in an aerosol container when contents of the aerosol container are almost used up by ejecting by a method wherein a nozzle-equipped push button of the aerosol container is kept being pushed down with a cap used theretofore by putting it on the aerosol container. SOLUTION: A downward-looking long engagement piece 11 and a downward- looking short engagement piece 13 are provided at the underside of an upper wall 6 of a cap main body 10 of an aerosol container 1 so as to be opposed each other with a nozzle-equipped push button 2 provided at the upper end of a spray stem 3 erected at the center of the aerosol container interposed in between when the cap main body is put on the aerosol container, and the long engagement piece is bent toward the short engagement piece with the front end 12' of a bent part 12 engaged with the lower end of the short engagement piece. When the cap main body is put on the aerosol container, the bent part 12 of the engagement piece pushes down the spray stem through the nozzle- equipped push button, and contents in the aerosol container are ejected through the nozzle of the push button.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerosol-type jetting container which is detachably fitted from above, erroneously depresses a push button with a nozzle at the upper end of a jetting stem when not in use, and pressurizes the liquid in the container with the pressure of a high-pressure gas. The present invention relates to a plastic molded cap for an aerosol container for preventing waste ejected from the nozzle of the push button together with gas.

[0002]

2. Description of the Related Art An aerosol container is used up by ejecting a liquid in a container and using up the liquid. Even if the liquid no longer exists in the container, a high-pressure gas remains in the container. Risk of rupture. Therefore, it is required that the ejection stem is pushed down via the push button with the nozzle even after the liquid in the container is used up, and the gas remaining in the container is completely discharged before being discarded. However, this requires removing the cap and continuing to push down the push button with the nozzle with the fingertip until gas in the chamber is no longer emitted, which is troublesome and time-consuming. For this reason, Japanese Patent Application Laid-Open No. 11-70986 discloses a cap fitted to an aerosol container from above with a function of pressing down a push button with a nozzle as required.

[0003]

In the above conventional cap, two vertically parallel cut grooves are formed on a part of the circumference of the peripheral side wall, and a press button with a nozzle is pressed down to release high-pressure gas in the container. When discharging the remaining residue, remove the cap, shred the two upper and lower parallel slit grooves, push the arc piece between the two slit grooves into the inside of the cap to reverse it, and then The cap is fitted to the container, and the push button with the nozzle is pressed down with the inverted arc piece. However, the cap is a plastic molded product that has elasticity,
Even if you cut the two slit grooves and push the arc piece deep into the cap with your finger and flip it to the position where the push button is pressed down, when you release your finger, it will return to its original position with elastic restoring force, and the cap will be put into the container Even if the push button with nozzle cannot be pushed down even if it is fitted, even if it is turned upside down, it will return only a little and shallowly invert due to the effect of elastic restoring force, and it will not be possible to accurately push down the push button with nozzle. There is a problem that the push button with the arrowhead nozzle cannot be pushed down.

Further, the arc piece can be inverted deeply to a position where the push button with the nozzle is pushed down. The cap is fitted to the aerosol container and the push button with the nozzle is pushed down with the inverted arc piece to remove the residue in the vessel. When ejected from the nozzle of the push button, the inverted arc piece creates a horizontally long opening as a trace of the arc piece on the peripheral side surface of the cap, so if liquid remains in the container, the liquid will There is also a danger of spouting out from the opening together with the gas and soiling clothes and other surroundings.

[0005]

SUMMARY OF THE INVENTION The present invention has been developed to solve the above-mentioned problems and to provide a cap capable of accurately pushing down a push button with a nozzle as required. , On the lower surface of the upper wall of the cap body,
When the cap body is fitted to the aerosol container, a long downward-facing engaging piece and a short downward-facing engaging piece are opposed to each other across a push button with a nozzle provided at the upper end of the injection stem that stands from the center of the aerosol container. When the engaging piece is bent toward the locking piece, the tip of the bent portion is locked to the lower end of the locking piece, and the cap body is fitted to the aerosol container in this state. The bent portion of the engagement piece pushes down the injection stem via a push button with a nozzle, so that the contents in the aerosol container are ejected from the nozzle of the push button. In this case, a short cylindrical wall with a downward length is provided concentrically on the lower surface of the upper wall of the cap main body, and the engaging piece and the locking piece have an arc-shaped cross-sectional shape from the lower end of the cylindrical wall,
Further, when the cap body is fitted to the aerosol container at the lower end of a part of the peripheral side wall of the cap body or provided downward in a diametrically opposed manner from the cylindrical wall, the inside of the cap body communicates with the outside air. It is preferable to provide a groove-shaped bulge.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiments, reference numeral 1 denotes a can as an aerosol container, 2 denotes a push button with a nozzle provided at the upper end of an injection stem 3 which stands from the center of the upper surface of the can, and pushes the push button with a finger. The liquid in the container is ejected from the nozzle 2 'opened on the side of the push button together with the high-pressure gas in the container by pushing down the ejection stem together. To prevent the push button 2 from being pressed down by mistake, a cap 4 made of plastic is detachably fitted when not in use so that the push button cannot be touched. This cap comprises a cap body 10 having a cylindrical peripheral side wall 5 and an integral upper wall 6 for closing the upper surface of the peripheral side wall, and has an inward thickened portion 7 on the inner periphery at the lower end of the peripheral side wall 5. When the aerosol container 1 is put on the aerosol container 1 from above, due to the elasticity of the cap, the above-mentioned thickened portion snaps over the winding edge 8 protruding from the outer periphery of the upper end of the can 1 and snap-engages to keep the fitted state. To eject the liquid in the container, the cap is removed from the container against the snap engagement force, and the push button with nozzle 2 is pressed down.

The lower surface of the upper wall 6 of the cap body 10 faces downward with a push button 2 provided with a nozzle provided at the upper end of an injection stem 3 which stands from the center of the container when the cap is fitted to the container 1 from above. When a long engaging piece 11 and a short downwardly engaging piece 13 are provided integrally with the cap body and the engaging piece 11 is bent toward the engaging piece 12, the engaging piece 11 is bent. The part 12 crosses over the push button 2.

In the embodiment shown in FIG. 1, a short cylindrical wall 14 having a short downward direction surrounding the upper end of the push button 2 is provided integrally and concentrically on the lower surface of the upper wall 6 of the cap body. 11 and a locking piece 13 are provided diametrically facing downward from the cylindrical wall 14. To keep the push button depressed to eject residual gas containing gas in the container from the nozzle 2 'and empty the container, remove the cap body from the container and connect the engagement piece 11 to the cylindrical wall 14. Bend at a right angle at the connection point of
The leading end 12 'of the bent portion 12 turned sideways is engaged with the locking piece 1.
3, and the cap body is fitted to the container 1 in this state. As a result, the bent portion 12 of the engaging piece 11 bent laterally crosses the push button 2 and keeps pushing down the push button, so that all the residual matter including gas remaining in the vessel can be discharged ( (See FIG. 1C).

In the embodiment of FIG. 1, the engaging piece 11 and the locking piece 1
3 is provided facing downward in a diametrical direction from the cylindrical wall 13, the cross-sectional shape of each of the engaging piece and the locking piece is arc-shaped and has strength. When the push button 2 is pushed down, it is not pushed back by the push button. However, the cylindrical wall 13 may be omitted as shown in the embodiment of FIG. 2 and the cross-sectional shape of the engaging piece and the locking piece may be flat and straight.

An inverted U-shaped recess 15 is formed at the lower end of the locking piece 13 to receive the tip 12 'of the bent portion 12 of the engaging piece.
Inward protruding portions 15 ', 15' are provided at the lower end of this concave portion, and the tip 12 'of the bent portion 12 of the engaging piece bent toward the engaging piece is concaved by the two protruding portions 15', 15 '. 1
5, it is preferable to prevent the bent portion from returning after the bent portion 12 is bent and then the cap is fitted to the container.

In the embodiment shown in FIG. 2, the engaging piece 11 and the locking piece 1
3 is provided directly downward from the lower surface of the upper wall of the cap body. The locking piece 13 has a claw 16 at the lower end facing the engaging piece, and an auxiliary piece 17 having a slightly shorter downward length than the locking piece is provided inside the locking piece 13.

In this embodiment, the middle of the engaging piece 11 is bent toward the locking piece 13 so that the bent portion 12 crosses over the push button 2. Then, the distal end 12 'of the bent portion 12 is hooked from above onto the pawl 16 of the locking piece and held.
In this state, when the cap body is fitted into the container and the push button 2 is pressed down by the bent portion 12, the bent portion is pushed back by the push button, but the downward auxiliary piece provided inside the locking piece is provided. Since the lower end of 17 is prevented from coming into contact with the bent portion 12 and being pushed back by the push button, the push button can be kept depressed to eject all the residual matter including gas remaining in the vessel.

In the embodiment shown in FIG. 2, the locking piece 13 is brought into contact with the claw 16 at the lower end as shown in FIG. By providing the portion 18, the tip of the bent portion 12 can be bitten and locked by the claw 16 and the contact portion 18 by omitting the auxiliary piece 17.

When the diameter of the push button with nozzle 2 is large, the downward length of the engaging piece 11 is increased, and
Must be traversed over the pushbutton with the nozzle, but then, when trying to put the cap on the aerosol container during normal use, the lower end of the locking piece hits the dome-shaped top wall 1 'of the container near the pushbutton, In some cases, the cap cannot be put on the container.

In this case, as shown in FIG. 4, two engaging pieces 11, 11 are provided facing downward from the upper wall 6 of the cap, and two engaging pieces 13 are orthogonal to the two engaging pieces. ,
13 is provided downward (refer to FIGS. 4A and 4B). To push down the push button 2 with the nozzle and continuously eject the residue containing gas in the container from the nozzle 2 'and empty the vessel, The middle of the engaging piece is bent toward each other, and both ends of the bent portions 12, 12 are opposed to each other with locking pieces 13,
Lock at 13. Each of the locking pieces 13 includes the claw 16 and the abutting portion 18 shown in FIG. 3, and the both sides of the distal end of each bent portion are caught and locked between the claw 16 and the abutting portion 18. Is preferred. By doing so, each engaging piece 11 only needs to have a length that allows the tip 12 'of the bent portion 12 to reach the center of the push button 2 with the nozzle when bent, so that the downward length can be shortened, and the normal downward length can be reduced. At the time of use, the cap can be put on the container without any trouble.

No matter how it is implemented, the engagement piece 1
It is preferable that a thin portion 19 is provided at a position where the engaging piece 13 is bent toward the locking piece 13 so that the engaging piece can be easily bent.

A groove-shaped bulging portion 20 for communicating the inside of the cap body with the outside air when the cap body is fitted to the container 1 is provided at a lower end portion of a part of the peripheral side wall of the cap body. The bent portion 12 of the engagement piece 11 is preferable because the residue containing the gas to be continuously ejected by pushing down the push button from above can be discharged from the groove-shaped bulging portion 20.

[0018]

As is apparent from the above, according to the present invention, when the cap body is fitted to the container, the push button is pushed down by the bent portion 12 of the engaging piece 11 traversing the push button, so that it is ensured. By continuing to push down the push button, the entire amount of the residue including the gas remaining in the vessel is ejected to completely empty the container. Further, since there is no opening in the peripheral side wall of the cap body, a small amount of liquid remains in the container and does not squirt out from the nozzle of the push button together with gas. Therefore, the surroundings are not contaminated by the ejected liquid.

[Brief description of the drawings]

1A is a cross-sectional view of a cap according to an embodiment of the present invention in a normal use state, FIG. 1B is a bottom view of the same cap, and FIG. 1C is a state in which gas is ejected. Sectional view,
(D) is an elevation view of the main part as viewed from the direction of arrow D in (C).

2A is a cross-sectional view of a cap according to another embodiment of the present invention in a normal use state, FIG. 2B is a bottom view of the same cap, and FIG. 2C is a state in which gas is ejected. (D) is a front view of the engagement piece and the locking piece.

FIG. 3 is a side view of another embodiment of the locking piece.

4A is a cross-sectional view of a cap according to still another embodiment of the present invention in a normal use state, FIG. 4B is a cross-sectional view taken along line BB of FIG. 4A, and FIG. Is a cross-sectional view in a state in which gas is jetted, and (D) is a cross-sectional view taken along line DD in (C).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Aerosol container (can) 2 Push button with a nozzle 2 'Nozzle of a push button with a nozzle 3 Injection stem 5 Peripheral side wall of a cap 6 Upper wall of a cap 10 Cap body 11 Engagement piece 12 Folding part of an engagement piece 13 Locking piece

Claims (3)

[Claims] 1. A cap for an aerosol container detachably fitted to an aerosol container, wherein an upper end of an injection stem which stands from a center of the aerosol container when the cap body is fitted to the aerosol container on a lower surface of an upper wall of the cap body. A long downwardly engaging piece and a short downwardly engaging piece that are opposed to each other with the push button provided with the nozzle interposed therebetween, and bending the engaging piece toward the above described engaging piece, When the tip of the bent portion is locked to the lower end of the locking piece, and the cap body is fitted to the aerosol container in this state, the bent portion of the engaging piece pushes down the spray stem via the push button with the nozzle, A cap for an aerosol container wherein the contents in the aerosol container are ejected from the nozzle of the push button. 2. The cap for an aerosol container according to claim 1, wherein a cylindrical wall having a short downward length is provided concentrically on the lower surface of an upper wall of the cap body, and the engaging piece and the locking piece are formed of the cylindrical wall. A cap for an aerosol container, wherein the cap has an arc-shaped cross section from a lower end and is provided facing downward in a diametric direction from the cylindrical wall. 3. The cap of the aerosol container according to claim 1, wherein the cap body is fitted to the aerosol container at a lower end portion of a part of a peripheral side wall of the cap body. A cap for an aerosol container, comprising a groove-shaped bulging portion for communicating the inside of the cap body with the outside air.