JP5710402B2 - 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.

  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 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, the appearance of a new bubble ejection container that can stably discharge fine bubbles has been strongly 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 proposes a foam ejection container that can stably discharge fine foam and is easy to use. It is in.

The present invention includes a container body having a flexible body, the inside of which is a filling space for the contents, a suction pipe for the contents, and an air inflow hole. And a cylinder that forms a confluence space of air and air, a base cap that is fixedly held at the mouth of the container body, and that holds the cylinder suspended from the mouth. A nozzle that forms a discharge path connected to the merge space, and by mixing and foaming the contents and air in the merge space by squeezing the body portion, the contents are passed through the discharge path to the nozzle. A bubble ejection container that ejects from the tip to the outside,
The cylinder has an annular path that leads to the filling space between the mouth of the container body,
The base cap includes a through-hole for communicating the discharge path and the annular path, and introducing outside air and residual contents in the discharge path into the annular path;
The annular path is provided with an inclined wall that expands the diameter toward the filling space and guides the residual content that has passed through the through hole from the discharge path to the filling space while being separated from the inflow hole. It is the foam ejection container characterized by this.

  It is desirable that the inclined wall has a lower peripheral edge that is the same as or below the inflow hole.

  It is desirable that the inclined wall has a plurality of protrusions that protrude downward from the peripheral edge of the lower end and are provided at intervals along the peripheral edge of the lower end.

The inclined wall has a convex portion that protrudes toward the outer peripheral wall of the cylinder, and a groove portion that engages with the convex portion is provided on the outer peripheral wall of the cylinder,
It is desirable that the groove portion is composed of at least one circumferential groove extending along the circumferential direction and a vertical groove connected to the circumferential groove.

On the upper part of the inclined wall, a partition wall that partitions the annular path and forms a storage space for the introduced residual content is provided,
It is desirable to form an opening in the partition wall for discharging the stored residual content toward the inclined wall.

An annular path is provided between the mouth of the container body and the cylinder that is suspended and held in the mouth, and the contents discharge path and the annular path are connected to the base cap so that the outside air and the exhaust path Since the through-hole for introducing the residual contents into the annular path is formed, the back suction function can be effectively exhibited, and dripping from the nozzle tip opening can be surely prevented.
In addition, the annular path is provided with an inclined wall that expands toward the filling space and guides the remaining contents that have passed through the through hole to the filling space while being separated from the inflow hole that allows air to flow into the cylinder. The possibility that the residual content including bubbles flows directly from the annular path into the inflow hole is reduced, and the inflow hole is not easily blocked by the content bubbles. Thereby, the mixing ratio of the contents and air can be maintained at a desired ratio, and fine bubbles can be stably discharged.

  When the lower edge of the inclined wall is positioned below the inflow hole, the risk of residual content flowing directly from the annular path into the inflow hole can be reliably reduced. Can be discharged.

  When a plurality of protrusions that protrude downward from the lower edge of the inclined wall and that are provided at intervals along the lower edge are formed on the inclined wall, residual contents that travel along the surface of the inclined wall are gathered together by the protrusion. Since it becomes easy to fall, obstruction | occlusion of the inflow hole by the bubble of the content becomes difficult to generate | occur | produce more.

  The inclined wall is provided with a protruding portion that protrudes toward the outer peripheral wall of the cylinder, and a groove portion that engages the protruding portion is formed on the outer peripheral wall, and the groove portion is at least one peripheral groove that extends in the circumferential direction; When the vertical wall is connected to the circumferential groove, the inclined wall has an inflow hole depending on the properties of the foam drawn by the back suction (the size of the foam, the ease of returning from the foam to the liquid, etc.). Since the height can be changed to the optimum height (axial position), it is possible to cope with the same parts even when contents having different properties are used.

  A partition wall is formed in the upper part of the inclined wall to partition the annular path and form a storage space for the introduced residual content, and an opening for discharging the stored residual content toward the inclined wall is formed in the partition wall In this case, since the residual contents are once retained in the storage space, the bubbles are likely to disappear, and the bubbles of the residual contents are less likely to be filled in the filling space. It becomes difficult to occur, and even if the contents are continuously discharged, the change in the quality of the foam can be sufficiently suppressed.

It is a fragmentary sectional view of the principal part which shows embodiment of the foam ejection container according to this invention. It is sectional drawing which follows AA shown in FIG. It is a perspective view of the lower cylinder which connected the inclined wall integrally about the foam ejection container shown in FIG. It is a fragmentary sectional view of the principal part which shows other embodiment of the foam ejection container according to this invention. It is a fragmentary sectional view of the principal part which shows other embodiment of the foam ejection container according to this invention. FIG. 6 is a partial side view showing a part of the foam ejection container shown in FIG. 5 in cross section. (A) is sectional drawing which follows BB shown in FIG. 6, (b) is sectional drawing which follows CC of the figure.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
1 is a partial cross-sectional view of a main part showing an embodiment of a foam ejection container according to the present invention, FIG. 2 is a cross-sectional view along AA shown in FIG. 1, and FIG. It is a perspective view of the lower cylinder which connected the inclined wall integrally about the foam ejection container shown in FIG.

  In FIG. 1, the code | symbol 10 is a container main body. The container main body 10 has a cylindrical mouth portion 11 having an open top, and a tubular body portion 12 connected to a bottom portion (not shown) is connected to the mouth portion 11, and a content filling space M is formed inside thereof. Is forming. 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.

  Reference numeral 20 denotes a cylinder that is suspended and held in the mouth portion 11 by a base cap described later. In the illustrated example, the cylinder 20 includes a bottom body 21 that forms the bottom of the cylinder, a lower cylinder 22 that forms a lower outer peripheral wall, and an upper cylinder 23 that forms an upper outer peripheral wall among the outer peripheral walls of the cylinder. I have.

  The bottom body 21 has a disc-shaped bottom plate 21a, and a bottom hole 21b penetrating the front and back is formed in the center of the bottom plate 21a. On the lower surface of the bottom plate 21a, a cylindrical fitting portion 21c that is suspended from the edge of the bottom hole 21b is provided. A suction pipe p that sucks the contents of the filling space M by the squeezing of the body portion 12 is fitted to the fitting portion 21c.

  An upper cylinder 21d stands on the upper surface of the bottom plate 21a, and a ring-shaped step portion d is provided on the upper surface of the upper cylinder 21d. Further, as shown in FIG. 2, vertical ribs 21e are provided on the inner side in the radial direction of the upper cylindrical body 21d. I have. Here, the gap formed between the vertical ribs 21e serves as a flow path 21f for the contents sucked by the suction pipe p. Further, as shown in FIG. 1, a hole (inflow hole 21g) penetrating the front and back is provided on the outer side in the radial direction of the upper cylinder 21d in the bottom plate 21a, and the upper cylinder 21d as shown in FIG. On the outer peripheral wall, a groove-shaped air flow path 21h is formed corresponding to the position where the inflow hole 21g is provided (in the illustrated example, four are provided in an equal arrangement). Thus, when the body portion 12 is squeezed, the air in the filling space M is introduced into the cylinder 20 from the inflow hole 21g through the air flow path 21h.

  As shown in FIG. 1, the lower cylinder 22 includes a cylindrical base portion 22 a that surrounds the upper cylindrical body 21 d of the bottom body 21. A step portion 22b is formed on the upper side of the base portion 22a on the inner side in the radial direction. In the illustrated example, an inclined wall 22c having a conical shape with a diameter increasing from the upper side to the lower side is provided on the outer side in the radial direction of the base portion 22a, and the inclined wall 22c is integrally connected to the base portion 22a. As a result, the outer surface of the inclined wall 22c is separated downward from the inflow hole 21g. In addition, as shown in FIG. 3, a plurality of protrusions 22e that protrude downward and are provided at intervals along the lower edge rim 22d may be provided on the lower edge rim 22d of the inclined wall 22c. The inclined wall 22c may be a separate member separated from the lower cylinder 22 and may be configured to be attached to the lower cylinder 22.

  Further, as shown in FIG. 1, the upper cylinder 23 is held by the lower cylinder 22 with an annular wall 23b suspended from a cylindrical base portion 23a and the annular wall 23b fitted into a step portion 22b. Furthermore, an inner step 23c is formed on the upper side of the upper cylinder 23 on the radially inner side, and an outer step 23d is provided on the outer side in the radial direction.

  Here, a base cap 30 is provided in the mouth portion 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. 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. A seal wall 35 is provided on the inner side in the radial direction of the ring wall 33. As a result, the base cap 30 is fixed and held detachably by sealing the mouth portion 11. In the illustrated example, the base cap 30 is fixedly held by screws, but may be fixedly held by undercutting.

  Further, the base cap 30 is integrally connected to the top wall 31 and has a nozzle 36 whose front end side is inclined slightly upward, and a stepped inner cylindrical portion 37 that is integrally connected to the top wall 31 and the nozzle 36 on the rear end side of the nozzle 36. And. Then, by fitting the inner step portion 23 c of the upper cylinder 23 to the inner cylinder portion 37, the bottom body 21, the lower cylinder 22, and the upper cylinder 23 constituting the cylinder 20 are suspended and held by the mouth portion 11. Thus, an annular path K is formed between the cylinder 20 and the mouth portion 11 so that the upper portion is covered with the top wall 31 and connected to the filling space M of the container body 10. On the other hand, the inner space defined by the bottom body 21, the lower cylinder 22, the upper cylinder 23, and the inner cylinder portion 37 passes through the contents introduced through the flow passage 21f by the compression of the trunk portion 12, and the air flow passage 21h. It is a merge space G in which the introduced air is mixed and foamed. In the merge space G, an intermediate member 40 disposed on the step portion d of the bottom body 21 and a foam member 50 positioned on the upper portion of the intermediate member 40 are disposed.

  The intermediate member 40 includes an annular base 41 disposed on the step portion d and a rod body 42 disposed on the inner side of the base 41 in the radial direction of the vertical rib 21 e of the bottom body 21. Yes. The base 41 and the rod body 42 are connected to each other by a plurality of connecting portions arranged at intervals in the circumferential direction, and the contents and air from the bottom body 21 are passed through the gaps 43 between the connecting portions. Can be delivered toward the foamed member 50.

  In the example shown in FIG. 1, a total of two foam members 50 are provided in the merge space G at intervals in the axial direction. The foam member 50 is made of a mesh 52 installed on the end face of the ring 51. The foamed member 50 can be foamed by passing the mixed contents of air through the foam member 50. In addition, the installation number of the foaming member 50, the coarseness of the mesh 52, etc. are suitably changed according to the kind of content.

  The foamed content that has passed through the foaming member 50 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 60 fitted and held in the outer step portion 23d of the upper cylinder 23. The check valve 60 includes an annular valve body 62 that elastically displaces outside the ring 61, and the valve body 62 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 60 along with the squeezing of the body portion 12, and the contents pass through the suction pipe p and the bottom body 21. It reaches the merge space G via the flow path 21f. Similarly, the pressurized air passes through the inflow hole 21g and reaches the merge space G via the air flow path 21h of the bottom body 21. Then, the contents foamed to the expected foam quality by passing both the contents and air through the foaming member 50 are ejected from the tip opening 36 a of the nozzle 36 via the discharge path H. 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 path H passes through the through hole 38 together with the outside air, and is introduced into the annular path K by pushing down the valve body 62 of the check valve 60. . The annular path K is provided with an inclined wall 22c that expands toward the filling space M and the outer surface of the annular path K is separated from the inflow hole 21g as it goes downward, so that the residual content introduced into the annular path K is provided. Will flow into the filling space M along the outer surface of the inclined wall 22c without flowing into the inflow hole 21g. As a result, the possibility that the inflow hole 21g is closed by bubbles of the residual content is reduced, and the mixing ratio of the content and air can be maintained at a predetermined ratio, and the back suction function can be effectively exhibited and textured. It is possible to stably discharge fine bubbles.

  Here, as shown in FIG. 1, when the lower end peripheral edge 22d of the inclined wall 22c is located at the same position or below the inflow hole 21g, there is a risk that the residual content flows directly from the annular path K into the inflow hole 21g. Since it can be reliably reduced, the desired foam contents can be discharged stably and continuously. Furthermore, as shown in FIG. 1 and FIG. 3, when the protrusion 22e is provided, the residual contents that travel along the outer surface of the inclined wall 22c fall together into the filling space from the protrusion 22e like the tip of the umbrella. Therefore, the inflow hole 21g is less likely to be blocked. In addition, as shown in FIG. 3, when the arc-shaped connecting portion R is provided at the base of the protrusion 22e, not only the protrusion 22e can be reinforced to increase the strength, but also the base width of the protrusion 22e is widened. The effect of the protrusion 22e in which the contents are collected and dropped can be exhibited more effectively.

  FIG. 4 is a view showing another embodiment of the foam ejection container according to the present invention. In the foam ejection container shown in FIG. The partition wall 70 which forms the storage space T of the residual content introduced from the hole 38 is provided. 4 includes an inner peripheral wall 71 that surrounds and holds the outer surface of the upper cylinder 23, and an outer peripheral wall 72 that contacts the inner surface of the seal wall 35 of the base cap 30, and includes the inner peripheral wall 71 and the outer peripheral wall. The tops of 72 are connected by a ring-shaped top wall 73. The top wall 73 is provided with an opening 74 penetrating the front and back. As a result, when the residual content introduced from the through hole 38 is sent out from the opening 74, the residual content is temporarily retained in the storage space T, so that the bubbles are likely to disappear. The inside of M is less likely to be filled. As a result, the inflow hole 21g is less likely to be blocked by bubbles of residual contents, so that the quality of the bubbles hardly changes even when the contents are continuously discharged, and the expected state is maintained. .

  5-7 is a figure which shows other embodiment of the foam ejection container according to this invention, Comprising: The same code | symbol is attached | subjected to the site | part which overlaps with the foam ejection container shown in FIG.1 and FIG.4 mentioned above. Thus, the description is omitted here. The foam ejection container shown in FIG. 5 has the foam ejection container shown in FIG. 4 as a basic shape, and instead of the lower cylinder 22, a lower cylinder 24 is provided, and instead of the inclined wall 22 c integrally connected to the lower cylinder 22, An inclined member 25 provided separately from the cylinder 24 is provided.

  The lower cylinder 24 includes a cylindrical base portion 24a surrounding the upper cylindrical body 21d of the bottom body 21, and a step portion 24b is provided on the upper side of the base portion 24a on the radially inner side. Accordingly, the lower cylinder 24 is held by the bottom body 21 and the upper cylinder 23 to constitute the cylinder 20. Further, the outer peripheral wall of the base portion 24a that forms a part of the outer peripheral wall of the cylinder 20 is provided with a groove portion that includes at least one peripheral groove extending in the circumferential direction and a vertical groove connected to the peripheral groove. . In the example shown in FIG. 6 and FIGS. 7A and 7B, a circumferential groove 24c extending approximately ¼ circumference in the circumferential direction on the outer peripheral wall of the base 24a, and a circumferential direction with respect to the circumferential groove 24c Are provided with a circumferential groove 24d that is shifted by a quarter of an axis and a predetermined amount upward in the axial direction, and further, a longitudinal groove 24e connected to one end side of the circumferential groove 24c, and the other end side of the circumferential groove 24c and one end side of the circumferential groove 24d. A groove portion provided with connecting vertical grooves 24f is provided, and two groove portions in total are provided in a symmetrical arrangement in the circumferential direction. The circumferential grooves 24c and 24d are provided with protruding portions 24g that protrude outward in the radial direction.

  In addition, the inclined member 25 has a conical inclined wall 25a whose diameter increases from the upper side to the lower side, a base 25b that surrounds the outer peripheral wall of the base 24a and is connected to the top of the inclined wall 25a, and a radial direction from the base 25b. A disc-shaped convex portion 25c (in the illustrated example, a total of two are provided in a symmetrical arrangement in the circumferential direction) that protrudes inward and engages with the groove portion of the lower cylinder 24 is provided. In addition, in the inclined member 25 shown in FIG.5 and FIG.6, the lower end periphery 25d is provided as a site | part corresponding to the lower end periphery 22d of the inclined wall 22c mentioned above, and the processus | protrusion 25e is provided as a site | part corresponding to the processus | protrusion 22e.

  Here, the inclined member 25 is rotated relative to the lower cylinder 24 from the upper posture of the inclined wall 25a in which the convex portion 25c of the inclined member 25 is engaged with the circumferential groove 24d of the lower cylinder 24 shown in FIG. Thus, by fitting the convex portion 25c to the vertical groove 24f, it can be displaced to the middle posture of the inclined wall 25a. Further, by rotating the inclined member 25 in the same direction and fitting the convex portion 25c to the vertical groove 24e, it can be displaced to the lower posture of the inclined wall 25a shown in FIG. Thereby, even when using the contents with different foam properties, the inclined wall 25a can be displaced to an optimum height at which the inflow hole 21g is hardly blocked. In addition, since the protrusion 24g provided in the circumferential grooves 24c and 24d acts as a rotation stopper of the inclined member 25, the inclined member 25 is prevented from rotating unintentionally, and an unintended change in the height of the inclined wall 25a is prevented. It can be surely prevented.

  ADVANTAGE OF THE INVENTION According to this invention, while providing a back suction function, a fine foam foam container which can discharge fine foam stably and can be provided can be provided.

DESCRIPTION OF SYMBOLS 10 Container main body 11 Mouth part 12 Body part 20 Cylinder 21 Bottom body 21g Inflow hole 22 Lower cylinder 22c Inclined wall 22d Lower end peripheral edge 22e Protrusion 23 Upper cylinder 24 Lower cylinder 24c Circumferential groove 24d Circumferential groove 24e Vertical groove 24f Vertical groove 25 Inclined member 25a Inclined wall 25c Convex portion 25d Lower edge 25e Protrusion 30 Base cap 36 Nozzle 38 Through hole 70 Partition wall 74 Opening p Suction pipe M Filling space G Merge space H Discharge path K Annular path T Storage space

Claims (5)

A container body having a flexible body, the inside of which is a filling space for the contents, a suction pipe for holding the contents, and an air inflow hole, and the inside of the contents and air A cylinder that defines a merging space, a base cap that is fixedly held at the mouth of the container body, and that holds the cylinder suspended from the mouth, and is integrally connected to the base cap so that the merging space is formed inside the base cap. A nozzle that forms a connected discharge path, and by mixing and foaming the contents and air in the merging space by squeezing the barrel part, the contents pass from the tip of the nozzle to the outside through the discharge path. A foam ejection container for ejecting,
The cylinder has an annular path that leads to the filling space between the mouth of the container body,
The base cap includes a through-hole for communicating the discharge path and the annular path, and introducing outside air and residual contents in the discharge path into the annular path;
The annular path is provided with an inclined wall that expands the diameter toward the filling space and guides the residual content that has passed through the through hole from the discharge path to the filling space while being separated from the inflow hole. A foam ejection container characterized by that.   The bubble ejection container according to claim 1, wherein the inclined wall includes a lower end peripheral edge that is located at or below the inflow hole.   3. The foam ejection container according to claim 1, wherein the inclined wall has a plurality of protrusions protruding downward from the peripheral edge of the lower end and provided at intervals along the peripheral edge of the lower end. The inclined wall has a convex portion that protrudes toward the outer peripheral wall of the cylinder, and a groove portion that engages with the convex portion is provided on the outer peripheral wall of the cylinder,
The foam ejection container according to any one of claims 1 to 3, wherein the groove portion is constituted by at least one circumferential groove extending along a circumferential direction and a longitudinal groove connected to the circumferential groove. On the upper part of the inclined wall, a partition wall that partitions the annular path and forms a storage space for the introduced residual content is provided,
The bubble ejection container in any one of Claims 1-4 which formed the opening which discharges the stored residual content toward this inclined wall in the said partition wall.

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