JP2007290756A - Degassing mechanism of aerosol container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a degassing mechanism capable of easily opening an overcap and capable of strongly fitting the overcap to an aerosol container when a remaining gas is extracted by changing the engaging force of the overcap to the aerosol container. <P>SOLUTION: The aerosol container comprising a body, a shoulder and a securing ring fixed to the upper end of the shoulder has a mountain cup with a stem ejecting at the upper end on the inner center. An ejecting head has a top wall and a lower side peripheral wall is fixed to the stem of the aerosol container. The overcap is equipped with a top wall and a securing side peripheral wall secured to the securing ring of the aerosol container and a securing wall is formed on the peripheral wall of the securing side peripheral wall and a securing protrusion to secure the upper end of the inner periphery weakly to the lower end of an outer periphery of the securing ring of the aerosol container is arranged at the inner peripheral lower end of the peripheral wall of the securing side peripheral wall and an engaging protrusion to secure the upper end part of the inner periphery strongly to the lower end part of the outer periphery of the securing ring is arranged projectingly at the inner peripheral lower end of the securing wall. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an aerosol container, and more particularly to a mechanism for extracting residual gas from the container after use.

To remove the residual gas from the used aerosol container, remove the ejection head attached to the aerosol container and remove the ejection head from the aerosol container equipped with the ejection head. The conventional content ejection container, which is installed in an overcap, inverted, and the overcap is installed in an aerosol container, so that the aerosol valve stem of the aerosol container is maintained in the depressed position and the residual gas is extracted. (For example, refer to Patent Document 1).
Japanese Utility Model Publication No. 6-3823

  In the contents ejection container described in Patent Document 1, in order to maintain the stem of the aerosol container in the depressed position, it is necessary to prevent the overcap from being detached from the upper part of the aerosol container with respect to the resilience of the stem. It had to be fitted with some strength.

However, if the fitting is strengthened, a strong force is required to open the overcap during normal use of the contents, and it may be difficult to open the cap.
In addition, it is necessary to grip the overcap strongly in order to open the lid. If the shape of the upper portion of the overcap is a dome shape, it is difficult to open the lid because fingers etc. cannot slide firmly due to the shape. Sometimes it was.

  An object of the present invention is to solve the above-mentioned problems, and it is possible to change the fitting force of the overcap to the aerosol container so that the opening of the overcap can be easily performed, and the residual gas in the used aerosol container is extracted. In this case, after the ejection head removed from the aerosol container is mounted in an inverted position in the overcap, the degassing mechanism of the aerosol container is designed to extract the residual gas by attaching the overcap to the aerosol container with a strong fit. The purpose is to provide.

  In order to solve the above-mentioned problem, the present invention is a content ejection container in which an overcap is attached to an aerosol container equipped with an ejection head as a degassing mechanism of the aerosol container, and the aerosol container has a trunk portion and a shoulder portion. An engagement ring to be attached to the upper end of the shoulder portion, and a mountain cup with a stem protruding from the upper end at the center of the inside, and a jet head comprising a top wall and a lower peripheral wall, an aerosol It is attached to the stem of the container, and the overcap includes a top wall and an engagement side peripheral wall that engages with an engagement ring of the aerosol container, and a locking wall portion is formed on the peripheral wall of the engagement side peripheral wall; A locking protrusion is provided at the inner peripheral lower end of the peripheral wall of the engagement side wall, and the outer peripheral lower end and the inner peripheral upper end of the engagement ring of the aerosol container are weakly engaged. A fitting protrusion that strongly engages the lower end of the outer periphery and the upper end of the inner periphery. When the gas is released from the aerosol container, the ejection head is removed from the aerosol container, mounted in an inverted position on the inside of the overcap, and the engagement ring of the overcap is fitted to the engagement ring of the aerosol container. A configuration is adopted in which the depressed state of the stem of the aerosol container is maintained by fitting the locking wall portion.

  In order to change the fitting force and simplify the opening of the overcap, a locking wall part is formed on the peripheral wall of the overcap engagement side wall, with the cuts on both sides from the lower end leaving the connecting part. Then, a configuration is adopted in which a push plate portion extending upward from the peripheral wall of the engagement side peripheral wall is formed at the upper end of the locking wall portion.

  The overcap is provided with a plurality of locking ribs for fitting the lower peripheral wall of the ejection head on the inner periphery of the wall in order to mount the ejection head upside down on the inner side of the overcap. The configuration is adopted.

In the contents ejection container in which the overcap is attached to the aerosol container equipped with the ejection head, the overcap is formed with an engagement side peripheral wall formed with a locking wall, and the locking wall is operated. By changing the strength of the engagement force of the cap with the aerosol container, the cap can be easily opened when the overcap is opened, and when the overcap is closed, the upper portion of the aerosol container can be strongly engaged and closed.
In addition, when the aerosol container is degassed, the pressed state of the aerosol container stem can be maintained, and the degassing is surely performed.

Next, an embodiment of the ejection container of the present invention will be described with reference to the drawings.
In FIG. 1, A is an aerosol container, B is an ejection head attached to the aerosol container A, and C is an overcap attached to the aerosol container A.

The aerosol container A is made of metal or synthetic resin, and includes a trunk portion 1, a shoulder portion 2 that is inclined inward and upward from the upper end of the trunk portion 1, and a mountain cup 3 that is connected to the upper end of the shoulder portion 2. is doing.
The mountain cup 3 forms an engagement ring 4 attached to an attachment ring formed at the upper end of the shoulder 2 on the upper outer periphery, and an aerosol valve having a stem 5 protruding at the upper end is provided at the inner center. Yes.

The ejection head B is formed of a synthetic resin and is attached to the stem 5 of the aerosol container A, and includes a top wall 10, an upper side peripheral wall 12 provided on the outer edge of the top wall 10 and provided with the ejection holes 11. The upper side peripheral wall 12 is provided with a lower side peripheral wall 14 having a diameter expanded via a flange 13 at the lower end, and the top wall 10 is formed of an inclined surface with the ejection hole 11 side raised.
The shape of the top wall 10 may be a curved surface with a concave portion at the center, or a horizontal surface provided with a concave portion or a convex portion.

  As shown in FIGS. 1 and 2, the overcap C is formed of a synthetic resin and has a dome-shaped top wall 15 formed on the top, and a diameter of the overcap C is increased via a flange 16 at the lower end of the cylindrical portion below the top wall 15. And an engagement side peripheral wall 17 that engages with the engagement ring 4 of the mountain cup 3 of the aerosol container A.

  As shown in FIG. 4, a plurality of engaging ribs 20 for mounting the ejection head B upside down are disposed on the inner periphery of the top wall 15. The upper inner surface 21 with which the lower end surface of the lower side peripheral wall 14 abuts and the side inner surface 22 with which the outer peripheral surface of the lower side peripheral wall 14 abuts.

As shown in FIG. 2, the peripheral wall of the engagement side peripheral wall 17 is formed with a locking wall portion 27 which is cut from the lower end by the cuts 25 on both sides leaving the connecting portion 26 at the symmetrical positions. The wall portion 27 extends upward from the peripheral wall of the engagement side peripheral wall 17, and a push plate portion 28 is formed.
Further, only one locking wall 27 may be provided.
A finger slip prevention part or a display part may be provided on the outer periphery of the push plate part 28.

  At the inner peripheral lower end of the engagement side peripheral wall 17, a locking projection 29 is provided that engages the inner peripheral upper end with the outer peripheral lower end of the engagement ring 4 of the mountain cup 3 of the aerosol container A weakly when the container is closed. In addition, a fitting projection 30 is provided at the lower end of the inner periphery of the locking wall 27 so that the upper end of the engagement ring 4 is strongly engaged with the lower end of the outer periphery of the engagement ring 4.

Next, the usage mode and operational effects of the ejection container of the present embodiment will be described.
The assembly of the ejection container is performed by mounting the ejection head B on the stem 5 of the aerosol container A, covering the aerosol container A with the overcap C, and engaging the overcap C with the engagement ring 4 of the mountain cup 3 of the aerosol container A. By engaging the locking protrusion 29 and the fitting protrusion 30 of the mating peripheral wall 17, the overcap C can be attached to the upper part of the aerosol container A to obtain a closed ejection container.

When the contents in the ejection container are used, the push plate portions 28 at the upper portions of the locking wall portions 27 provided on both sides of the engagement side peripheral wall 17 of the overcap C are gripped from the outside and pushed inward.
As shown in FIG. 3, when the pressing plate portion 28 is pushed in, the lower portion of the locking wall portion 27 opens to the outside with respect to the engagement side peripheral wall 17 via the connecting portion 26, and the inner periphery of the locking wall portion 27. The engagement between the fitting protrusion 30 provided at the lower end and the engagement ring 4 of the mountain cup 3 of the aerosol container A is released.

When pulling upward while holding the push plate portion 28, the engagement between the engagement protrusion 29 of the engagement side peripheral wall 17 of the overcap C and the engagement ring 4 of the mountain cup 3 of the aerosol container A is weak. The overcap C can be easily removed from the upper part of the aerosol container A and opened.
When the ejection head B is pushed down, the contents can be ejected from the ejection holes 11.

  Further, when the gripping of the push plate portion 28 of the overcap C is removed, the locking wall portion 27 returns to the original shape due to the restoring force of the connecting portion 26, so when using the contents and closing the ejection container, The engagement protrusion 4 and the engagement protrusion 30 of the engagement side peripheral wall 17 of the overcap C are engaged with the engagement ring 4 of the mountain cup 3 of the aerosol container A, and the overcap C is attached to the upper part of the aerosol container A. It can be strongly engaged and closed.

When all the contents are used and the aerosol container A is discarded, the residual gas in the aerosol container A is extracted.
To remove the residual gas, first, the overcap C is removed from the aerosol container A, and then the ejection head B is pulled upward to remove it from the stem 5 of the aerosol container A.
The ejected ejection head B is inverted and inserted into the inner periphery of the plurality of engagement ribs 20 disposed on the inner periphery of the top wall 15 of the overcap C, and the lower end surface of the lower side peripheral wall 14 of the ejection head B is engaged with the engagement rib. The upper inner surface 21 of 20 and the outer peripheral surface of the lower side peripheral wall 14 are engaged with the side inner surface 22 of the engaging rib 20 and attached.

As shown in FIG. 4, the inclined surface of the top wall 10 of the ejection head B is formed in the aerosol container by closing the lid with the overcap C mounted with the ejection head B inverted and engaged with the upper part of the aerosol container A. A is in contact with the top of the stem 5 of A, and the pressed state is maintained.
By maintaining the depressed state of the stem 5, the opened state of the aerosol valve of the aerosol container A is maintained, and the residual gas in the aerosol container A flows from the opening of the stem 5 to the top wall 10 of the ejection head B and the stem 5. It is ejected into the overcap C from the gap with the upper surface, and further passes through a cut 25 provided in the engagement side peripheral wall 17 of the overcap C and is discharged out of the container.

Since the engagement protrusion 4 of the engagement side peripheral wall 17 of the overcap C is strongly engaged with the engagement ring 4 of the aerosol container A, the resilience of the stem 5 by the aerosol valve of the aerosol container A is prevented. However, the stem 5 prevents the cap 5 from being pushed up and opened, and if it is left as it is, the gas is continuously extracted, and the residual gas and contents in the aerosol container A are extracted. The aerosol container A can be safely discarded.
Further, when the overcap C is removed from the aerosol container A together with the ejection head B after the residual gas is extracted, the waste can be separated and discarded.

In the above embodiment, the upper part of the overcap is a dome-shaped top wall. However, any pipe can be used as long as the ejection head can be mounted in an inverted state when removing residual gas. For example, a cylindrical wall having a top wall The shape of the upper portion of the overcap is not limited to the above embodiment.
In addition, the engagement rib only needs to be able to mount an inverted ejection head, so that it hangs down from the top wall, protrudes inward from the side peripheral wall, etc., corresponding to the shape of the overcap, The location and shape of the engagement rib can be changed as appropriate, and the present invention is not limited to the embodiment.

  The present invention draws out the ejection head from the upper part of the aerosol container, mounts the ejection head upside down inside the dome-shaped overcap, and removes residual gas by attaching the overcap to the upper part of the aerosol container. Therefore, it can be widely used as a degassing mechanism for various aerosol containers.

It is a cross-sectional elevation view of the ejection container of the present invention. It is explanatory drawing of an overcap, (a) is a partial cross section front view, (b) is a partial cross section side view. It is explanatory drawing at the time of opening of an overcap. It is explanatory drawing of the ejection container at the time of residual gas venting.

Explanation of symbols

A Aerosol container B Ejection head C Overcap 1 Body 2 Shoulder 3 Mountain cup 4 Engagement ring 5 Stem 10 Top wall 11 Ejection hole 12 Upper side peripheral wall 13, 16 Flange 14 Lower side peripheral wall 15 Top wall 17 Engagement side peripheral wall DESCRIPTION OF SYMBOLS 20 Engagement rib 21 Upper inner surface 22 Side inner surface 25 Cut 26 Connection part 27 Locking wall part 28 Pushing plate part 29 Locking protrusion 30 Fitting protrusion

Claims (3)

A content ejection container having an overcap attached to an aerosol container equipped with an ejection head,
The aerosol container forms an engagement ring that is attached to the trunk, shoulder, and upper end of the shoulder, and includes a mountain cup that protrudes a stem at the upper end at the inner center.
The ejection head has a top wall and a lower peripheral wall, and is attached to the stem of the aerosol container.
The overcap comprises a top wall and an engagement side peripheral wall that engages with the engagement ring of the aerosol container,
A locking wall portion is formed on the peripheral wall of the engagement side peripheral wall, and the locking protrusion in which the outer peripheral lower end portion and the inner peripheral upper end portion of the engagement ring of the aerosol container are weakly engaged with the inner peripheral lower end of the peripheral wall of the engagement side peripheral wall. And a fitting protrusion that strongly engages the outer peripheral lower end and the inner peripheral upper end of the engagement ring is provided at the inner peripheral lower end of the locking wall.
When degassing the aerosol container, remove the ejection head from the aerosol container, mount it upside down on the inside of the overcap, and fit the locking wall with the engagement ring peripheral wall of the overcap to the engagement ring of the aerosol container A degassing mechanism for an aerosol container, wherein the pressed state of the stem of the aerosol container is maintained.   A locking wall part is formed on the peripheral wall of the engagement side peripheral wall of the overcap by cutting both sides from the lower end so as to leave a connecting part, and above the peripheral wall of the engagement side peripheral wall at the upper end of the locking wall part. 2. The degassing mechanism for an aerosol container according to claim 1, wherein an extended push plate portion is formed.   The degassing mechanism for an aerosol container according to claim 1 or 2, wherein the overcap is provided with a plurality of locking ribs for fitting the lower peripheral wall of the ejection head on the inner periphery of the wall surface.

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