JP5738746B2 - Foam ejection container - Google Patents

Description

  The present invention can squeeze the flexible body part to foam and discharge the fluid content (liquid, gel, etc.), as well as the content remaining in the nozzle after discharge. Concerning a foam ejection container with a back suction function that can prevent dripping, it is possible to prevent inadvertent leakage of contents during distribution, etc., and to enable discharge with a simple operation during use. It can be done.

  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 disappear and return to the original fluid content, so that after a while, the content may sag from the spout (drip) and clog (solidify the content). It was. 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 the bubble ejection container as described above, for example, when an unexpected force is applied to the container during distribution, the contents may leak from the nozzle tip, so the nozzle tip or the entire nozzle is covered. Although it is common to provide an overcap, the cost of parts increases as the number of parts increases, and the overcap must be removed every time it is used, which can be time consuming. The emergence of new bubble ejection containers has been strongly desired. However, since the internal structure of the foam ejection container equipped with a back suction function has become more complex, it has not yet been put into practical use that can reliably prevent the leakage of the contents with a simple operation. Met.

  An object of the present invention relates to a foam ejection container provided with a back suction function, which can reliably prevent leakage of contents during distribution and the like while eliminating the need for an overcap, etc., and can be easily discharged during use. We are proposing an easy-to-use bubble squirt container that can be used.

The present invention includes a container body having a flexible body portion, the inside of which is a filling space for contents, a suction pipe for the contents, and an air inflow path, and the contents inside And a cylinder for defining and forming a confluence space for mixing and foaming, an inner cylinder holding the cylinder and having an upper opening communicating with the confluence space, and surrounding the inner cylinder and between the inner cylinder and the inner cylinder An outer cylinder that forms an annular space that communicates with the filling space, a base cap that is fixedly held at the mouth of the container main body, and a discharge path that introduces the foamed contents from the rear end opening and discharges them from the front end opening to the outside. And a head that is integrally connected to the nozzle and that is slidable along the axis of the outer cylinder,
The head is connected to the upper opening to form a feeding path for sending the contents foamed by squeezing the trunk part to the discharge path, and the residual contents in the discharge path together with the outside air are restored by the restoration of the trunk part. It has a relay space that forms a return route that is pulled back to the annular space,
A foam ejection container is provided in the relay space, wherein a stopper that closes the upper opening when the head is lowered and opens the upper opening when the head is raised is disposed.

  The head has an annular wall extending into the annular space, and the inner cylinder is in close contact with the annular wall when the head is lowered to close the annular space, while the head is raised. It is desirable to provide an elastic wall that opens the annular space.

  A base cap attached to the mouth of the container main body holds a cylinder for foaming the contents inside and has an inner cylinder having an upper opening communicating with the cylinder, and the container main body between the inner cylinder and the inner cylinder. An outer cylinder that forms an annular space that communicates with the filling space is provided, and a head integrally connected with the nozzle is provided to be slidable along the axis of the outer cylinder, and the head is foamed by squeezing the upper portion connected to the upper opening. In addition to forming a feeding path for sending the contents to the discharge path of the nozzle, a relay space is formed that forms a return path for returning the remaining contents in the discharge path to the annular space by restoring the barrel, While the upper opening is closed in the lowered position, a plug that opens the upper opening in the head raised position is provided, so that the contents can be prevented from being accidentally leaked by pressing down the head. It is one, can be in use it is possible to discharge the foamy contents simply pull the head, along the liquid after ejection anyone prevented by.

  An elastic wall that forms an annular wall extending in the annular space on the head and closes the annular space in close contact with the annular wall in the lowering position of the head while opening the annular space in the rising position of the head Since the annular space can be closed and the filling space can be sealed by pushing down the head, the body portion will not be easily deformed even if an unintended force is applied to the container body. Since the outside air cannot enter and leave the space, the shape of the body portion is maintained), and the inadvertent discharge of the contents can be more effectively prevented.

It is the fragmentary sectional view which changed the head to the descent | fall attitude | position about the foam ejection container according to this invention. It is sectional drawing which follows AA shown in FIG. It is a fragmentary sectional view which shows the attitude | position which changes the head of the foam ejection container shown in FIG. 1 to a raise attitude | position, and squeezes a trunk | drum. It is a fragmentary sectional view which shows the attitude | position which the trunk | drum of the foam ejection container shown in FIG. 3 restore | restores.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 is a partial cross-sectional view of a foam ejection container according to the present invention in which the head is changed to a lowered posture, FIG. 2 is a cross-sectional view taken along AA shown in FIG. 1, and FIG. It is a fragmentary sectional view which shows the attitude | position which changes the head of the foam ejection container shown in FIG. 1 to a raise attitude | position, and squeezes a trunk | drum, Comprising: FIG. 4 shows the attitude | position which the trunk | drum of a foam ejection container shown in FIG. It is a fragmentary sectional view shown.

  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 part 11 a is formed on the outer peripheral surface of the mouth part 11. Furthermore, as shown in FIG. 2, a small protrusion 11b and a large protrusion 11c are provided at the base of the mouth portion 11 with an interval in the circumferential direction.

  Reference numeral 20 denotes a cylinder which introduces contents and air into the inside thereof, and mixes and foams the cylinder. In the illustrated example, the cylinder 20 includes a lower cylinder 21 that forms the bottom of the cylinder 20 and an upper cylinder 22 that forms the body of the cylinder 20.

  The lower cylinder 21 includes a bottom cylinder main body 21a having a bottomed cylindrical shape, a hole 21b penetrating through the bottom of the lower cylinder main body 21a, and a suction pipe p that is provided in conformity with the hole 21b and sucks the contents of the filling space M. And a fitting portion 21c for fitting and holding. A groove 21d is provided on the upper outer peripheral surface of the lower cylinder body 21a.

  The upper cylinder 22 includes a conical wall 22a that expands from the top to the bottom and surrounds the lower cylinder 21, and a cylindrical upper cylinder body 22b that is integrally connected to the conical wall 22a at the top of the conical wall 22a. ing. Further, on the inner peripheral side of the upper cylinder body 22b, a cylindrical large-diameter portion 22c that fits and holds the lower cylinder 21 with the conical wall 22a, and an inclination that decreases in diameter upward from the large-diameter portion 22c. A portion 22d and a cylindrical small-diameter portion 22e standing above the inclined portion 22d are integrally connected, and this is connected to the inner surface of the upper cylinder body 22b via a connecting portion 22f. Here, the large-diameter portion 22c and the connecting portion 22f are provided with grooves 22g adapted to the grooves 21d of the lower cylinder 21, and the inflow passage for introducing the air in the filling space M into the cylinder 20 through these grooves. m is formed. Furthermore, a plurality of support ribs 22h for supporting a foam member to be described later from below are provided at an upper portion of the connecting portion 22f with a gap in the circumferential direction.

  In the lower cylinder 21 and the upper cylinder 22 configured as described above, the concave space formed inside thereof is a merging space G in which contents and air are introduced, mixed, and foamed.

  Reference numeral 30 denotes a base cap attached to the mouth portion 11 of the container body 10. The base cap 30 includes a top cylindrical inner cylinder 31 that fits and holds the upper cylinder body 22b, and an outer cylinder 32 that surrounds the inner cylinder 31 with a space therebetween. It connects with the outer cylinder 32 via the connection part 33 provided in multiple intervals. The space between the inner cylinder 31 and the outer cylinder 32 is an annular space K, and communicates with the filling space M through the adjacent connecting portions 33. Further, an outer convex portion 32a bulged toward the outer peripheral side is provided on the upper portion of the outer cylinder 32.

  The outer cylinder 32 is provided on a ring-shaped ceiling wall 34 provided on the mouth portion 11. An outer wall 35 surrounding the mouth portion 11 is provided on the outer edge of the top wall 34, and a screw portion 35 a that engages with the screw portion 11 a of the mouth portion 11 is formed on the inner surface of the outer wall 35. Further, as shown in FIG. 2, a detent rib 35 b is provided at the lower end portion of the outer wall 35. Thus, when the base cap 30 is screwed in, immediately before the screwing is finished, the anti-rotation rib 35b gets over the small protrusion 11b and is held between the small protrusion 11b and the large protrusion 11c. Further, as shown in FIG. 1, a seal wall 36 is provided on the back surface of the top wall 34 so as to be in close contact with the inner peripheral surface of the mouth portion 11 and to keep the container body 10 and the base cap 30 airtight. Yes. In the illustrated example, the base cap 30 is fixedly held by screws, but may be fixedly held by undercutting.

  The inner cylinder 31 includes a cylindrical body 31 a that rises from the top, and the inner peripheral side of the cylindrical body 31 a is an upper opening 31 b that penetrates the top of the inner cylinder 31 and is connected to the inside of the cylinder 20. ing. On the outer peripheral side of the inner cylinder 31, an annular elastic wall 31 c is provided that connects the lower part to the outer peripheral surface of the inner cylinder 31 and the upper part is a free end.

  Reference numeral 40 denotes a head disposed above the base cap 30. The head 40 includes a head body 41 having a cylindrical shape, and a nozzle 42 that inclines the tip side upward and is integrally connected to the head body 41. A discharge path H for the contents is formed inside the nozzle 42, the contents are introduced from the rear end opening Ha on the rear end side, and the contents are discharged from the front end opening Hb toward the outside. Further, an inner convex portion 41 a bulged toward the inner peripheral side is provided in the lower opening of the head main body 41.

  An annular wall 43 that extends along the inner peripheral surface of the outer cylinder 32 and slides relative to the outer cylinder 32 is provided inside the head body 41. Thereby, the head main body 41 can be changed to a rising / lowering posture along the axis of the outer cylinder 32. The lower end of the annular wall 43 is in close contact with the elastic wall 31c in the lowered posture of the head body 41 shown in FIG. A plug body 44 is provided on the inner peripheral side of the annular wall 43 so as to be in close contact with the inner peripheral surface of the cylindrical body 31a when the head main body 41 is lowered.

  Reference numeral 50 denotes a foam member disposed in the merge space G. In the example shown in the figure, one piece is provided on each of the support ribs 22h and the opening end of the upper cylinder body 22b, and is fitted and held on the inner peripheral surface of the upper cylinder body 22b. The foam member 50 is made of a mesh 52 fixed to the end face of the ring 51, and 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.

  Reference numeral 60 is a check valve provided between the annular space K and the filling space M. In the illustrated example, the check valve 60 is fitted and held on the outer peripheral surface of the inner cylinder 31. 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 back surface of the top wall 34 of the base cap 30. Thereby, air and contents from the filling space M side are not discharged into the annular space K, while outside air or the like is introduced into the filling space M through the annular space K.

  As shown in FIG. 1, in the foam ejection container configured as described above, the plug body 44 is brought into close contact with the inner peripheral surface of the cylindrical body 31a by pushing down the head main body 41 and changing the head body 41 into the lowered posture. Thus, the discharge of the contents is prevented, so that inadvertent leakage of the contents during distribution can be prevented. In particular, as shown in the figure, when the elastic wall 31c is provided so as to be in close contact with the annular wall 43, the filling space M can be hermetically sealed. Can be prevented more reliably.

  Further, as shown in FIG. 3, the foam ejection container according to the present invention can open the upper opening 31b and the annular space K only by pulling up the head main body 41, so that it can be discharged by a simple operation. Can do. Here, when the outer convex portion 32a and the inner convex portion 41a are provided as shown in the drawing, these can be made to function as a retaining member for the head main body 41.

  And when the trunk | drum 12 is squeezed, the filling space M will be pressurized under the effect | action of the non-return valve 60, and the content will be introduce | transduced in the merge space G through the suction pipe p. Similarly, the pressurized air in the filling space M reaches the merge space G through the inflow channel m. And the content can be made to foam to the expected foam quality by allowing the foaming member 50 to pass through in the state mixed with air.

  Here, in the posture in which the head 40 is raised as shown in FIG. 3, the space (relay space T) formed inside the outer cylinder 32 and the annular wall 43 is foamed from the upper opening 31 b toward the discharge path H. Therefore, the foamed contents are introduced into the discharge path H from the rear end opening Ha and discharged from the front end opening Hb, as indicated by arrows in FIG.

  Thereafter, when the squeezing of the body 12 is released as shown in FIG. 4, the flexible body 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 is drawn back into the relay space T together with the outside air, as indicated by arrows in FIG. In addition, while the inside of the cylinder 20 is relatively difficult to flow air or the like by the foam member 50 and the small diameter portion 22e, the check valve 60 is easy for the flow from the annular space K toward the filling space M. Therefore, the remaining contents in the relay space T can be returned to the filling space M through the annular space K.

  Here, when the contents pulled back into the inflow path m for introducing air into the cylinder 20 enter, the mixing ratio between the contents in the cylinder 20 and the air changes from the expected ratio, and the contents to be discharged are discharged. In the example shown in the figure, the conical wall 22a is provided to cover the inflow path m, so that the residual content that is pulled back repeatedly after repeated discharge is likely to be deteriorated. Even if the amount increases, the expected foam quality can be maintained.

  According to the present invention, it has a back suction function, can prevent inadvertent leakage of contents during distribution, etc., and can be used to discharge foamy contents with a simple operation during use. Can provide a good foam jet container.

DESCRIPTION OF SYMBOLS 10 Container main body 11 Mouth part 12 Body part 20 Cylinder 30 Base cap 31 Inner cylinder 31b Upper opening 31c Elastic wall 32 Outer cylinder 40 Head 41 Head main body 42 Nozzle 43 Annular wall 44 Plug body M Filling space p Suction pipe m Inflow path G Merge Space K Annular space H Discharge path T Relay space Ha Rear end opening Hb Front end opening

Claims (2)

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 passage, and the contents and air inside A cylinder that defines a merge space for mixing and foaming, an inner cylinder that holds the cylinder and has an upper opening that communicates with the merge space, and surrounds the inner cylinder and communicates with the filling space between the inner cylinder and the inner cylinder. A base cap that has an outer cylinder that forms an annular space and is fixedly held at the mouth of the container body, and a nozzle that has a discharge path that introduces foamed contents from the rear end opening and discharges them from the front end opening to the outside. And a head provided to be slidable along the axis of the outer cylinder,
The head is connected to the upper opening to form a feeding path for sending the contents foamed by squeezing the trunk part to the discharge path, and the residual contents in the discharge path together with the outside air are restored by the restoration of the trunk part. It has a relay space that forms a return route that is pulled back to the annular space,
A foam ejection container, wherein a plug body that closes the upper opening when the head is lowered and opens the upper opening when the head is raised is disposed in the relay space.   The head has an annular wall extending into the annular space, and the inner cylinder is in close contact with the annular wall when the head is lowered to close the annular space, while the head is raised. The foam ejection container according to claim 1, further comprising an elastic wall that opens the annular space.

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