JP6012947B2 - Foam ejection container - Google Patents

Description

  The present invention relates to a foam ejection container that foams and discharges fluid contents (liquid, gel, etc.) by squeezing a flexible body without increasing the number of parts. The expected foamy contents can be discharged stably.

  As a container that contains various liquid detergents such as shampoos, body soaps, hand soaps, facial cleansers, and hair conditioners such as set lotions, the flow of the contents is from the viewpoint of simplifying use by omitting the foaming operation. A foam member made of, for example, a mesh is incorporated in the road, and by compressing the flexible trunk, the contents and air are mixed and passed through the foam member to cause foaming. There has been proposed a foam ejection container that discharges the contents that have become from the nozzle outlet (see, for example, Patent Document 1). In addition, it is also demanded that these containers can be provided as cheaply as possible.

  In the foam ejection container as described above, the foamed content remains in the nozzle discharge path in addition to the amount discharged from the jet outlet, but the remaining content is Over time, the bubbles disappeared and the contents returned to the original contents having fluidity. Therefore, after a while after use, the contents sometimes dropped from the spout. This is particularly noticeable in the horizontal-type foam ejection container in which the ejection port is provided on the side surface of the nozzle.

  In order to avoid such dripping, an outside air introduction hole for restoring the squeezed body part is provided in the discharge path of the contents, together with the outside air taken into the container body as the body part is restored. There is known a foam ejection container provided with a back suction function for returning the remaining contents into the container body.

Japanese Utility Model Publication No. 58-174272

  By the way, in order to make fine bubbles, the mixing ratio of the contents and air that passes through the foam member is one of the important factors. To maintain the foam quality constant, the mixing ratio is stable. It is necessary to keep in mind. However, in the foam ejection container having the back suction function as described above, when the discharge of the contents is continued by repeating the squeezing and restoration of the body part, the foam of the residual contents pulled back fills the container body, The rate at which the mixing ratio of the contents and air is expected due to the fact that the inflow hole that feeds air to the foamed member may be blocked, resulting in a decrease in the amount of inflow of air or the inclusion of bubbles in the air. The foam quality deteriorated (the texture of the foam became rough). For this reason, even if it has a back suction function, it is possible to stably discharge fine bubbles, and at the same time, it is possible to suppress the material cost and the manufacturing cost as much as possible without increasing the number of parts. The emergence of a bubble ejection container has long been desired.

  An object of the present invention relates to a foam ejection container that foams and discharges contents, and has a back suction function and can stably discharge fine foam and does not increase the number of parts. There is a place to propose an ejection container.

The present invention includes a container body having a flexible body part, the inside of which is a filling space for contents, a fitting part for holding a suction pipe for contents, and air around the fitting part . A cylinder provided with an inflow hole and defining a confluence space between the contents and air inside thereof; fixedly held at the mouth of the container body; and suspended from the mouth to hold the cylinder A base cap that forms an annular path that connects to the filling space between the cylinder and a nozzle that has a discharge path that connects to the merging space and that is integrally connected to the base cap. A foam ejection container that mixes and foams contents and air in a confluence space, and ejects the contents from the tip opening of the nozzle to the outside.
The nozzle is provided with a through-hole through which the discharge path and the annular path are communicated to introduce outside air and residual contents in the discharge path into the annular path.
An annular wall that surrounds the inflow hole with a space in the cylinder, and a flange that extends toward the mouth and leaves an opening penetrating the front and back to divide the annular path into two. These are foam ejection containers characterized by being integrally connected together.

  The annular wall is preferably a tapered wall that is reduced in diameter from the bottom side of the container body toward the inflow hole.

  It is preferable that the annular wall is provided adjacent to the opening between the inflow hole and the opening.

  It is preferable that the nozzle includes a nozzle lid that is detachably attached to a tip opening of the nozzle.

An annular path is formed between the mouth of the container body and the cylinder, and the discharge path for the contents and the annular path are connected to the nozzle to introduce the outside air and the remaining contents in the discharge path into the annular path. Since the through-hole to be formed is formed, the back suction function can be effectively exhibited, and the liquid dripping from the tip opening of the nozzle can be surely prevented.
In addition, since the cylinder is provided with an annular wall that surrounds the air inflow hole with a space therebetween, the residual content including bubbles returned to the filling space through the through hole flows directly into the inflow hole. There is no fear, the mixing ratio of the contents and air can be maintained at a desired ratio, and fine bubbles can be discharged stably.
Furthermore, the cylinder is provided with a flange that extends toward the mouth of the container main body and leaves an opening penetrating the front and back to divide the annular path into two. The upper annular path on the hole side can function as a space (reservation space) for temporarily retaining the residual contents. The contents temporarily retained in the storage space are returned to the filling space in a state where the bubbles are reduced or disappeared, and the inside of the container body is filled with the bubbles of the remaining contents. It becomes difficult to happen. As a result, the problem that the air inflow hole is blocked by the bubbles of the residual contents is less likely to occur, and fine bubbles can be continuously discharged.
In addition, since the annular wall and the flange are integrally connected to the cylinder, the number of parts does not increase, and the cost of the bubble ejection container can be suppressed as much as possible.

  When the annular wall is a tapered wall whose diameter is reduced from the bottom side of the container body toward the air inflow hole, the air in the container body pressurized by the squeezing of the trunk part flows in from the bottom side of the tapered wall. As they flow toward the hole side, they are collected and introduced into the inflow hole, so that the contents can be discharged without greatly flexing the body part, and the usability is improved.

  When the annular wall is provided between the inlet hole and the opening and adjacent to the opening, the residual content flowing into the annular path through the opening is likely to come into contact with the adjacent annular wall, and the residual content is removed. Since the annular wall is easily transmitted and returned to the filling space, it is possible to further suppress the possibility that the residual content flows directly into the inflow hole.

  When providing a nozzle lid that is detachably attached to the tip opening of the nozzle, the contents can be discharged from the nozzle even if it is inadvertently squeezed, for example, during the circulation of the bubble ejection container. Can be effectively prevented.

It is a side view which shows an embodiment of the foam ejection container according to the present invention in part in cross section. (A) is a partial expanded sectional view of the foam ejection container shown in FIG. 1, (b) is a partially expanded sectional view along XX of (a), (c) is (a). It is an arrow view from the arrow A shown. It is a side view which shows a part of embodiment of the other foam ejection container according to this invention in a cross section. (A) is the elements on larger scale of the bubble ejection container shown in FIG. 3, (b) is an arrow line view from the arrow B shown to (a).

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 is a side view showing a part of the embodiment of the foam ejection container according to the present invention in section, and FIG. 2A is a partially enlarged sectional view of the foam ejection container shown in FIG. (B) is a partial expanded sectional view which follows XX of (a), (c) is an arrow line view from the arrow A shown to (a).

  1 and 2A, reference numeral 10 denotes a container body. The container body 10 has a cylindrical mouth portion 11 having an open top, and a body portion 12 with a bottom portion is connected to the mouth portion 11 via a shoulder portion, and the inside is filled with contents. A space M is formed. Here, the trunk portion 12 has flexibility formed by, for example, a synthetic resin. A screw portion 11 a is formed on the outer surface wall of the mouth portion 11. Further, as shown in FIG. 2B, a small protrusion 11b and a large protrusion 11c are provided at the base of the mouth portion 11 with a gap in the circumferential direction.

  Reference numeral 20 denotes a cylinder that is suspended and held on the mouth portion 11 by a base cap described later. In the illustrated example, the cylinder 20 is integrally connected to an inner wall of the cylinder main body 21 with a step below the cylinder main body 21 and a cylindrical cylinder main body 21 having a stepped portion 21a at an axially intermediate portion thereof. A cylindrical fitting portion 22 having an opening 22a and an inner wall 23 connected to the fitting portion 22 with an upward gap with respect to the upper opening 22a are provided. Here, at least one side hole 24 that opens outward in the radial direction is provided on the side wall that connects the fitting portion 22 and the inner side wall 23. Further, at the connection portion between the cylinder body 21 and the fitting portion 22, at least one inflow hole 25 that takes in the air in the container body 10 through the front and back and takes in the air in the container body 10 is formed. In the illustrated example, a total of four inflow holes 25 are provided at intervals in the circumferential direction, as shown in FIG. Furthermore, the cylinder 20 is integrally provided with an annular wall 26 that surrounds the inflow hole 25 with a space therebetween. Here, the annular wall 26 shown in FIGS. 1 and 2A is a tapered wall 26 </ b> A whose diameter is reduced from the bottom side of the container body toward the inflow hole 25. Here, the tapered wall means a wall whose opening area becomes smaller toward the upper side, and may be not only a conical shape but also a pyramid shape.

  Here, a flange 27 is integrally connected to the cylinder 20 as shown in the figure. In the illustrated example, the flange 27 is integrally connected to the upper end of the cylinder body 21 and extends outward in the radial direction. Further, the upper surface of the flange 27 is integrally connected to an upper fitting wall 27a having a diameter larger than that of the cylinder body 21 and an annular edge wall 27b rising from an end edge of the flange 27, and at least one penetrating the front and back. Two openings 27c are provided.

  A suction pipe p extending toward the bottom of the container body 10 is fitted and held in the fitting portion 22 of the cylinder 20. Thereby, when the trunk | drum 12 is squeezed, the content in the filling space M will pass the inner side of the cylinder 20 in the content flow path which passes the inner side of the suction pipe p, passes the upper opening 22a, and passes the side hole 24. To be introduced. On the other hand, the air in the filling space M is introduced into the air passage through the inside of the annular wall 26 (tapered wall 26A) and passing through the inflow hole 25.

  A base cap 30 is provided at the mouth 11 of the container body 10. The base cap 30 includes a dome-shaped top wall 31 that covers the mouth portion 11, and includes a ring wall 33 that is integrally connected to the top wall 31 via a stepped portion 32. On the inner surface of the top wall 31, a plurality of retaining ribs 31 a that abut on and hold the upper part of a check valve described later are provided at intervals in the circumferential direction. An annular outer wall 34 is provided on the outer side in the radial direction of the ring wall 33, and a threaded portion 34 a that engages with the threaded portion 11 a of the mouth portion 11 is formed on the inner surface of the outer wall 34. Has been. Further, as shown in FIG. 2 (b), a detent rib 34 b is provided at the lower end portion of the outer wall 34. As a result, when the base cap 30 is screwed into the container body 10, just before the screwing is finished, the rotation prevention rib 34b gets over the small protrusion 11b and is held between the small protrusion 11b and the large protrusion 11c. Further, as shown in FIG. 2A, a seal wall 35 is provided on the inner side in the radial direction of the ring wall 33 to seal the filling space M. Here, the edge wall 27b of the flange 27 is preferably brought into elastic contact with the inner surface of the side wall of the step portion 32, whereby the flange 27 and the base cap 30 can be brought into close contact with each other without any gap. In the illustrated example, the base cap 30 is fixedly held by screws, but may be fixedly held by undercutting.

  The base cap 30 includes a nozzle 36 that is integrally connected to the top wall 31 and whose tip end is inclined slightly upward, and an inner cylindrical portion 37 that is integrally connected to the rear end side of the nozzle 36. Then, the cylinder 20 is suspended and held in the mouth portion 11 by inserting and fitting the inner cylinder portion 37 into the upper fitting wall 27 a of the cylinder 20. Thereby, between the outer wall of the cylinder 20 and the base cap 30 and the mouth portion 11, an annular path K that is covered with the top wall 31 and is connected to the filling space M of the container body 10 is defined. The annular path K is vertically divided by the flange 27, whereby the annular path K is divided into an upper annular path Ka at the upper part and a lower annular path Kb at the lower part. On the other hand, the inner space of the cylinder body 21 is a merging space G that mixes and foams the content introduced through the content flow path described above and the air introduced through the air flow path described above by the compression of the body portion 12. It has become.

  The nozzle 36 may be provided with a nozzle lid 36b that is detachably attached to the tip opening 36a. In the illustrated example, the nozzle lid 36b is integrally connected to the nozzle 36 via a hinge 36c.

  A foam member 40 is disposed in the merge space G. In the illustrated example, one foam member 40 is disposed on the stepped portion 21 a of the cylinder 20 and each of the inner cylindrical portion 37 of the base cap 30. The foam member 40 is made of a mesh 42 fixed to the end face of the ring 41, and the foamed member 40 can be made to be foamed by passing the mixed contents of air through the foam member 40. In addition, the installation number of the foaming member 40, the coarseness of the mesh 42, etc. are suitably changed according to the kind of content.

  The foamed content that has passed through the foaming member 40 is delivered toward the nozzle 36. Here, a discharge path H connected to the merge space G is formed inside the nozzle 36, and the contents are ejected from the tip opening 36 a of the nozzle 36 serving as an outlet of the discharge path H toward the outside. In addition, a through hole 38 that allows the discharge path H and the annular path K to communicate with each other is provided in the inner cylindrical portion 37 of the base cap 30. Further, the annular path K is provided with a check valve 50 that is fitted to the outer peripheral side of the upper fitting wall 27 a of the cylinder 20 and that is retained by the retaining rib 31 a of the base cap 30. The check valve 50 includes an annular valve body 52 that elastically displaces outside the ring 51, and the valve body 52 is in close contact with the lower surface of the step portion 32 of the base cap 30. Thereby, air and contents from the filling space M side are not discharged from the through hole 38, while outside air or the like is introduced into the filling space M through the through hole 38.

  In the foam ejection container configured as described above, the filling space M is pressurized under the action of the check valve 50 in accordance with the squeezing of the body portion 12, and the content passes through the content flow path described above, and is lateral. It is introduced into the cylinder 20 by a flow that goes radially outward from the hole 24. Similarly, the pressurized air flows from the bottom side of the container body 10 toward the mouth part 11 as indicated by the two-dot chain line arrow shown in FIG. It is introduced into the cylinder 20 by a flow passing through the passage and going radially inward from the inflow hole 25. As a result, the contents and air introduced into the cylinder 20 are sufficiently agitated by flows in opposite directions. Then, the agitated contents and air pass through the foaming member 40 in the merge space G, are foamed to the desired foam quality, and are ejected from the tip opening 36 a of the nozzle 36 through the discharge path H. Here, when the tapered wall 26 </ b> A is provided in the cylinder 20 as illustrated, the air inside the tapered wall 26 </ b> A is collected as it flows from the bottom side of the container body 10 toward the inflow hole 25 and flows into the inflow hole 25. As a result, air can be efficiently introduced into the cylinder 20 and the contents can be ejected without enlarging the amount of compression of the body 10 so much.

  Thereafter, when the squeezing of the body portion 12 is released, the flexible body portion 12 is restored to its original shape. As a result, the filling space M becomes a negative pressure, and the foamed residual content in the discharge passage H passes through the through hole 38 together with the outside air, and pushes down the valve body 52 of the check valve 50 to be introduced into the upper annular passage Ka. The Here, since the upper annular path Ka is a storage space for temporarily retaining the residual content partitioned and introduced by the flange 27, the foamed residual content is temporarily retained in the storage space. become. Thereby, the residual content which passes the opening 27c can be returned to the filling space M in a state where bubbles are reduced. Accordingly, the filling space M is not immediately filled with bubbles of residual contents, and the air inflow holes 25 are not easily blocked by the bubbles of residual contents. By maintaining the ratio at a desired ratio, fine bubbles can be discharged stably and continuously.

  Further, since the inflow hole 25 is covered with the annular wall 26, there is no possibility that the residual content passing through the opening 27c flows directly into the inflow hole 25 when returning to the filling space M. 25 blockages are less likely to occur.

  As shown in the figure, when an edge wall 27b that elastically contacts the inner surface of the side wall of the stepped portion 32 is provided at the edge of the flange 27, leakage of residual contents from between the flange 27 and the edge wall 27b. Can be reliably prevented. As a result, the residual content is surely introduced into the filling space M only from the opening 27c, and the foam as expected is stably discharged.

  In addition, when the nozzle cover 36b is provided as in the illustrated example, the content of the contents from the tip opening 36a of the nozzle 36 may be reduced even if the foam ejection container is inadvertently squeezed. Emission can be effectively prevented. When the nozzle lid 36b is integrally connected to the nozzle 36 via the hinge 36c as in the illustrated example, the number of parts does not increase, and loss after the nozzle lid 36b is removed can be prevented.

  3-4 is a figure which shows other embodiment of the foam ejection container according to this invention, Comprising: It replaces with the taper wall 26A shown to FIGS. 1-2 (a) as an annular wall 26, and is a cylinder wall 26B is provided. In the illustrated example, the cylindrical wall 26B is suspended from the lower surface of the flange 27, is positioned between the inflow hole 25 and the opening 27c, and is provided adjacent to the opening 27c. As a result, the residual content flowing out from the opening 27c is likely to come into contact with the outer surface wall of the cylindrical wall 26B, so that it can be surely returned to the filling space M through the cylindrical wall 26B. Further, since the cylindrical wall 26B also surrounds the inflow hole 25 with a space therebetween, it is possible to reliably remove the possibility that the residual content flows directly into the inflow hole 25.

  According to the present invention, a foam jet that has a back suction function, can discharge fine bubbles stably, is easy to use, and the number of parts does not increase, so that it can be made as cheap as possible. Can provide a container.

DESCRIPTION OF SYMBOLS 10 Container main body 11 Mouth part 12 Body part 20 Cylinder 25 Inflow hole 26A Tapered wall (annular wall)
27 Flange 27c Opening 30 Base cap 36 Nozzle 36a Tip opening 36b Nozzle cover 38 Through-hole G Merge space H Discharge path K Annular path M Filling space p Suction pipe

Claims (4)

A container body having a flexible barrel portion, the inside of which is a filling space for contents, a fitting portion for holding a suction pipe for the contents, and an air inflow hole around the fitting portion A cylinder that forms a confluence space between the contents and air inside thereof, and is fixedly held at the mouth of the container body, and the cylinder is suspended from the mouth to hold the mouth and the cylinder. A base cap that forms an annular path that connects to the filling space between each other, and a nozzle that has a discharge path that connects to the merging space and that is integrally connected to the base cap. A foam ejection container that mixes and foams the contents and air, and ejects the contents to the outside from the tip opening of the nozzle,
The nozzle is provided with a through-hole through which the discharge path and the annular path are communicated to introduce outside air and residual contents in the discharge path into the annular path.
An annular wall that surrounds the inflow hole with a space in the cylinder, and a flange that extends toward the mouth and leaves an opening penetrating the front and back to divide the annular path into two. And a foam ejection container characterized by being integrally connected together.   2. The foam ejection container according to claim 1, wherein the annular wall is a tapered wall having a diameter reduced from the bottom side of the container body toward the inflow hole.   The foam ejection container according to claim 1, wherein the annular wall is provided adjacent to the opening between the inflow hole and the opening.   The foam ejection container according to any one of claims 1 to 3, wherein the nozzle includes a nozzle lid that is detachably attached to a tip opening of the nozzle.

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