JP2014046938A - Bubble jet container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bubble jet container capable of suppressing drawbacks that a high sound occurs at the time of a suction back function when air passes through a clearance between a valve body and a valve seat, and that the restoration of a trunk takes a long time.SOLUTION: A bubble jet container is caused to mix and foam a content and air and to inject the mixture from a nozzle 36 by the compression of a trunk 12 of a container body 10, and to return the residual content in the nozzle 36 by the restoration of the trunk 12. A check valve 50 is characterized by including: a valve body 51 using the inner face of a base cap 30 as a valve seat; an annular body portion 52 connected integrally to the valve body 51 and fitted and held in an internal cylindrical wall 36b; and an inward flange 53 protruding radially inward from the lower end of the annular body portion 52 and clamped between the upper face of a step portion 21 and the lower face of the internal cylindrical wall 36b.

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 bubble ejection container provided with a suction back function (also referred to as a suck back function or a back suction function) for pulling back residual contents into the container body. In such a foam ejection container, normally, the outside air introduction hole is closed when the trunk is squeezed and the contents are discharged by pressurizing the inside of the container, while the outside air introduction hole is opened when the trunk is restored. A suction back function is realized by providing a check valve that functions to pull back the residual contents in the discharge path back into the container.

Japanese Utility Model Publication No. 58-174272

  By the way, although the above-described check valve has no problem when assembled at an accurate position, if the displacement or inclination occurs when assembled to the container, the valve body of the check valve comes into contact with the valve body. The positional relationship with the valve seat may be deteriorated (the mutual contact may not be uniform, or the gaps between the valve bodies may be uneven). In particular, if the gap between the valve body and the valve seat is too narrow when the body is restored, a high noise will be heard when air passes through the narrow gap, and it will be difficult to take in outside air, and the body will be restored. Sometimes took a long time.

  An object of the present invention is to solve such a problem related to the suction back function, and its purpose is to reduce the variation in position and inclination when assembling the check valve as much as possible, thereby compressing the compressed cylinder. The present invention proposes an improved foam ejection container capable of suppressing the generation of a high sound when the part is restored and the problem that it takes too much time to restore the body part.

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. A cylinder that forms a space for confluence of air and air, and an annular ring that is fixedly held at the mouth of the container body, is suspended from the mouth, and is connected to the filling space between the cylinder and the cylinder. A base cap that forms a path, and a nozzle that is integrally connected to the base cap to form a discharge path that leads to the merge space, and that has a through hole in a rear end wall that partitions the discharge path and the annular path When the body portion is squeezed, the annular passage is closed, and the contents and air are fed into the merging space, mixed and foamed, and the foamed contents are ejected from the nozzle opening to the outside. Of the torso The original time by opening the annular path, a bubble jet container and a check valve to retract the remaining contents in the outlet path from the through hole into the fill space,
The cylinder has a stepped portion protruding radially outward,
The base cap includes an inner cylindrical wall extending toward the stepped portion,
The check valve includes a valve body having an inner surface of the base cap as a valve seat, an annular main body integrally connected to the valve body and fitted and held on the inner cylindrical wall, and a lower end of the annular main body A foam ejection container having an inward flange projecting radially inward from and sandwiched between the upper surface of the stepped portion and the lower surface of the inner cylindrical wall.

  The through hole preferably has an opening area over the entire rear end wall.

  The cylinder is formed with a step protruding radially outward, the base cap is provided with an inner cylindrical wall extending toward the step, and the check valve has a valve body with the inner surface of the base cap as a valve seat; An annular body part integrally connected to the valve body and fitted and held on the inner cylindrical wall; and an upper surface of the stepped part and a lower surface of the inner cylindrical wall projecting radially inward from the lower end of the annular body part Since the inward flanges sandwiched between each other are provided, the check valve can be positioned without inclination on the inner cylindrical wall of the base cap and the stepped portion of the cylinder. As a result, it is possible to suppress problems such as generation of a high sound when the body portion is restored and time taken to restore the body portion due to variations in position and inclination during assembly. In addition, if the part that holds the check valve is different from the part that becomes the valve seat of the check valve, the positional deviation between the valve body and the valve seat increases due to the combination error of these parts. Since the check valve of the invention is held by the base cap and uses the base cap as a valve seat, the positional relationship between the valve body and the valve seat becomes more accurate, and the above-described problems are less likely to occur. .

  When the through hole has an opening area over the entire rear end wall of the nozzle, it is easier to take in the outside air, so that the time required for restoring the body portion can be shortened.

It is a partial side sectional view showing an embodiment of a foam ejection container according to the present invention. It is a fragmentary front sectional view of the foam ejection container shown in FIG. It is sectional drawing which follows AA shown in FIG. (A) is sectional drawing which follows BB shown in FIG. 1, (b) is a fragmentary perspective view of (a). It is sectional drawing which follows CC shown in FIG. It is a partial side sectional view showing other embodiments of a foam spout container according to the present invention. It is a fragmentary front sectional view of the foam ejection container shown in FIG.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 is a partial side sectional view showing an embodiment of a foam ejection container according to the present invention, FIG. 2 is a partial front sectional view of the foam ejection container shown in FIG. 1, and FIG. 4A is a cross-sectional view taken along the line BB shown in FIG. 1, and FIG. 4B is a partial perspective view of FIG. 4A. FIG. 5 is a cross-sectional view taken along the line CC 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 part 11 a is formed on the outer surface of the mouth part 11. Further, as shown in FIG. 5, a small protrusion 11b and a large protrusion 11c are provided at the base of the mouth part 11 with an interval 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 has a cylinder body 22 having a stepped portion 21 projecting radially outward at an upper portion thereof, and a cylinder bottom forming the bottom of the cylinder 20 by inserting and fitting a lower end portion of the cylinder body 22. It consists of a body 23.

  The cylinder body 22 includes a cylindrical body 22a in which a small-diameter lower part and a large-diameter upper part are connected via a step d. Further, a ring plate 22b extending radially inward is formed inside the cylindrical body 22a, and further inside the ring plate 22b in the axial direction of the cylinder body 22 (axis c shown in FIG. 2). An extending rod 22c is provided. Here, the upper portion of the rod 22c is held integrally connected with a connecting piece 22d extending obliquely upward from the ring plate 22b. As shown in FIG. 3, a plurality of connecting pieces 22d are provided at intervals in the circumferential direction (three in total in the example shown in the figure).

  The cylinder bottom body 23 is inserted and held in the lower part of the cylinder body 22a, and has a bottomed cylindrical bottom section 23a having an opening at the center thereof, and a cylinder that hangs around the opening of the bottom section 23a. Are connected integrally with the upper portion of the bottom fitting portion 23b, and the conical inclined wall 23c whose diameter is expanded downward, and is integrally connected at the lower end of the inclined wall 23c and spaced in the circumferential direction. And a tapered protrusion 23d provided in an open manner (in the illustrated example, four are provided in a uniform arrangement). The fitting portion 23b is fitted and held with a suction pipe p that sucks the contents of the filling space M by squeezing the body portion 12.

  As shown in FIGS. 4A and 4B, an annular inner wall 23e is erected on the inner side of the cylinder bottom body 23. The inner wall 23e is formed on the cylindrical body 22a as shown in FIG. It is fitted and held on the inner peripheral surface, and its upper surface is in contact with the ring plate 22b. As a result, a gap 22e is formed over the entire circumference between the lower end of the cylindrical body 22a and the upper surface of the bottom 23a. A plurality of ribs 23f (four in the example shown in the figure) are provided on the inner peripheral surface of the inner side wall 23e at intervals in the circumferential direction. In addition, a plurality of outer groove portions 23g are provided on the outer peripheral surface of the inner wall 23e (four in the example shown in the figure) with an interval in the circumferential direction. An upper groove 23h connected to 23g is provided. Here, as shown in FIG. 1, the cylinder bottom body 23 includes a plurality of inflow holes 24 that take in air inside the cylinder bottom body 23 at intervals in the circumferential direction at the connecting portion between the bottom wall and the peripheral wall of the bottom portion 23 a. I have. In the illustrated example, four places are provided at intervals in the circumferential direction.

  The cylinder 20 configured as described above has a content flow path through which the contents in the filling space M are passed in the order of the gap between the suction pipe p and the rib 23f and the gap between the connecting pieces 22d. It can introduce into the merge space G formed inside. On the other hand, the air in the filling space M is introduced into the merge space G through an air flow path that passes in the order of the inflow hole 24, the gap 22e, the outer groove 23g, the upper groove 23h, and the gap between the connecting pieces 22d. The

  A base cap 30 is provided at the mouth 11 of the container body 10. The base cap 30 has a dome-shaped top wall 31 that covers the mouth portion 11, and a lower wall of the top wall 31 is provided with a horizontal wall 32 that extends radially outward. A vertical wall 33 extending downward is connected to the edge of the horizontal wall 32, and an annular outer wall 34 surrounding the mouth 11 of the container body 10 is further connected to the lower end of the vertical wall 33. I have. 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. Further, as shown in FIG. 5, a detent rib 34 b is provided at the lower end portion of the outer wall 34. Thus, when the base cap 30 is screwed in, immediately before the screwing is finished, the anti-rotation rib 34b gets over the small protrusion 11b and is held between the small protrusion 11b and the large protrusion 11c. In addition, as shown in FIG. 5, it is preferable to provide a slope on the surface of the anti-rotation rib 34b that first contacts the small protrusion 11b by screwing. Further, as shown in FIG. 1, a seal wall 35 is provided on the radially inner side of the outer wall 34 to seal the filling space M. 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. The nozzle 36 has a cylindrical nozzle body 36a whose front end side is inclined upward slightly and has a discharge path H inside thereof, and a cylinder that is integrally connected to the rear end side of the nozzle body 36a and extends downward. Shaped connection wall 36b. Here, the connecting wall 36b is configured to be inserted and fitted into the cylinder main body 22 of the cylinder 20, thereby suspending and holding the cylinder 20 at the mouth portion 11, and the merging space G and the discharge path H. Are connected. Further, between the cylinder 20, 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. Further, an inner cylindrical wall 37 extending toward the stepped portion 21 of the cylinder 20 is provided on the radially outer side of the connecting wall 36b. 1 and 2, a gap is provided between the connecting wall 36b and the inner cylindrical wall 37. For example, a plurality of ribs are provided in the gap in the circumferential direction. The connecting wall 36b and the inner cylindrical wall 37 may be connected by this rib, or the connecting wall 36b and the inner cylindrical wall 37 may be integrated so as to fill all the gaps. In the present embodiment, a rear end wall 38 that partitions the discharge path H and the annular path K is provided at the rear end of the nozzle body 36a, and the discharge path H and the annular path K are provided on the rear end wall 38. A through-hole 38a for communication is formed. Further, the tip of the nozzle body 36a is open (tip opening 39), and serves as a discharge port for the contents passing through the discharge path H.

  A foam member 40 is disposed in the merge space G. In the example shown in the drawing, one piece is provided so as to abut on each of the step d of the cylindrical body 22a and the upper end of the connecting wall 36b of the base cap 30. The foam member 40 is made of a mesh 42 fixed to the end face of the ring 41. The foam and the contents introduced into the merging space G are caused to pass through the foam member 40 to be foamed. be able to. 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.

  A check valve 50 is disposed in the annular path K. The check valve 50 has an inner surface of the base cap 30 as a valve seat, and is normally connected to the annular valve body 51 that contacts the inner surface, the valve body 51 and the inner cylindrical wall 37 of the base cap 30. An annular main body 52 to be held, and an inward flange 53 projecting radially inward from the lower end of the annular main body 52 are provided. In the present embodiment, the inner surface of the horizontal wall 32 is used as a valve seat. However, depending on the shape of the base cap 30, it can be provided in another part. The valve body 51 includes a valve body base portion 51a having a cross-sectional shape curved downward, and a tip annular portion 51b depending from the edge of the valve body base portion 51a. Since the tip annular portion 51b can increase the rigidity of the edge of the valve body base 51a, the edge of the valve body base 51a can be brought into uniform contact with the horizontal wall 32 over the entire circumference. Further, when the valve body base 51a is separated from the horizontal wall 32, the gap between the valve body base 51a and the horizontal wall 32 acts so as to be uniform over the entire circumference. The inward flange 53 is sandwiched between the upper surface of the stepped portion 21 of the cylinder 20 and the lower surface of the inner cylindrical wall 37 in the assembled state, so that the check valve 50 has an axis c (FIG. 2). ) Is uniquely determined, and the inward flange 53 follows the stepped portion 21 and the inner cylindrical wall 37, and is not attached with an inclination.

  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 contents pass through the above-described content flow path to join the space. It reaches G. Similarly, the pressurized air reaches the merge space G through the air flow path described above. The contents foamed to the expected foam quality by passing both the contents and air through the foaming member 40 are ejected from the tip opening 39 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 negative pressure, so that the valve body 51 of the check valve 50 is separated from the horizontal wall 32, and the foamed residual content in the discharge path H passes through the through hole 38a together with the outside air, and the valve It passes through the annular path K from the gap between the body 51 and the horizontal wall 32 and is drawn back to the filling space M. Here, as described above, since the check valve 50 is suppressed from being displaced and tilted as much as possible when assembled, it takes time to generate a high sound when the body 12 is restored and to restore the body 12. Such problems are sufficiently suppressed.

  Further, when the residual content drawn back into the filling space M flows into the inflow hole 24 for taking the air in the filling space M into the merge space G of the cylinder 20, the mixing ratio of the air taken into the merge space G and the contents However, in this embodiment, the inclined wall 23c of the cylinder 20 is separated from the inflow hole 24 as it goes downward, although there is a possibility that the foam quality of the contents may change. Since it is provided, the residual content does not flow directly into the inflow hole 24. Thereby, even if the suck back function is repeatedly applied, the contents can be continuously discharged with the expected foam quality. Further, when the taper protrusion 23d is provided, the taper protrusion 23d acts like the tip of an umbrella, so that the residual contents transmitted along the outer surface of the inclined wall 23c are collected by the taper protrusion 23d and easily fall. Further, the flow of the residual contents into the inflow hole 24 is further less likely to occur.

  Further, the present invention may be configured as shown in FIGS. 6 and 7 instead of the configuration as described above. Here, FIG. 6 is a partial side sectional view showing another embodiment of the foam ejection container according to the present invention, and FIG. 7 is a partial front sectional view of the foam ejection container shown in FIG.

  In another embodiment, the through hole 38a is configured to have an opening area covering the entire area of the rear end wall 38, that is, the rear end of the nozzle body 36a is completely opened without providing the rear end wall 38. . Thereby, since it becomes easier to take in the outside air and the residual contents, the time required for restoring the trunk portion 12 can be further shortened.

  According to the present invention, it is possible to minimize variations in position and inclination when assembling the check valve, so it takes time to generate a high sound when the compressed body is restored and to restore the body. It is possible to provide a foam ejection container that can sufficiently suppress the problem of being too much.

DESCRIPTION OF SYMBOLS 10 Container main body 11 Mouth part 12 Body part 20 Cylinder 21 Step part 24 Inflow hole 30 Base cap 37 Inner cylindrical wall 38 Rear end wall 38a Through hole 50 Check valve 51 Valve body 52 Annular main body 53 Inward flange G Merge space G
H discharge route K annular route M filling space p suction pipe

Claims (2)

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 forms a confluence space, and is fixedly held at the mouth of the container body, the cylinder is suspended and held at the mouth, and an annular path is formed between the cylinder and the filling space. A base cap, a nozzle integrally connected to the base cap, forming a discharge path connected to the merge space inside the base cap, and having a through hole in a rear end wall partitioning the discharge path and the annular path; and the body portion When the squeezing is performed, the annular passage is closed, the contents and air are fed into the merging space, mixed and foamed, and the foam-like contents are ejected from the opening at the tip of the nozzle to the outside. When restoring To open the annular path, a bubble jet container and a check valve to retract the remaining contents in the outlet path from the through hole into the fill space,
The cylinder has a stepped portion protruding radially outward,
The base cap includes an inner cylindrical wall extending toward the stepped portion,
The check valve includes a valve body having an inner surface of the base cap as a valve seat, an annular main body integrally connected to the valve body and fitted and held on the inner cylindrical wall, and a lower end of the annular main body A foam ejection container comprising an inward flange projecting radially inward from and sandwiched between the upper surface of the stepped portion and the lower surface of the inner cylindrical wall.   The foam ejection container according to claim 1, wherein the through hole has an opening area over the entire area of the rear end wall.

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