JP5872423B2 - 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).

Japanese Utility Model Publication No. 58-174272

  By the way, in the foam ejection container in which the amount of the content discharged from the nozzle is relatively small, there is no particular problem even with the above structure, but the foam ejection container in which the amount of the content to be ejected at a time is relatively large. When applied, the space where the contents and air are mixed is wide, so that there is a tendency for the foam quality to vary due to the mixing of the mixed portion and the insufficient portion. Moreover, the texture of the foam was also roughened by this dispersion | variation.

  An object of the present invention is to solve such a problem, and a purpose thereof is a novel bubble jetting that can be jetted into uniform fine bubbles regardless of the jetting amount of contents. Proposed container.

The present invention has a container body having a flexible body part, the inside of which is a filling space for the contents, and a peripheral wall rising from the bottom wall, and the contents leading to the suction pipe for the contents on the bottom wall A cylinder for introducing the contents and air into a confluence space formed inside by providing an air introduction hole for passing air in the substance introduction hole and the filling space, and the contents from the confluence space disposed in the cylinder, and A foaming member that allows air to flow in and a nozzle that is fixedly held at the mouth of the container body, suspends and holds the cylinder at the mouth, and jets out the foamed contents. In a foam ejection container comprising a base cap
The cylinder has a disk member disposed in the merging space, and has a bottomed cylindrical shape that forms an inlet space that protrudes toward the filling space and communicates with the upstream space inside the bottom wall of the cylinder. Forming a convex wall, providing the content introduction hole at the bottom of the convex wall;
The disk member includes a top plate that divides the merging space into an upstream space and a downstream space, and a gap between the upstream space that supports the top plate and reaches the top plate from the bottom wall from the foam member. An annular wall narrower than the gap in the downstream space reaching the top plate,
A gap is formed between the top plate and at least one through-hole that allows the upstream space and the downstream space to communicate with each other and the inner peripheral surface of the convex wall extending toward the inlet space. It is a foam ejection container provided with a rod-shaped member.

  Preferably, at least one of the upper surface of the bottom wall facing the upstream space and the lower surface of the top plate is roughened.

The base cap has a rear end opening for allowing the residual contents in the nozzle to flow into the rear end side of the nozzle,
The cylinder includes a content return port for allowing the residual content from the rear end opening to flow into the filling space in a flange engaged and held by the base cap.
On the peripheral wall of the cylinder, when the container body is squeezed, the contents return port is closed and the contents and air are sent into the cylinder, while when the container body is restored, the contents return port is opened and remains. It is preferable to provide a check valve that pulls the contents back from the contents return port into the filling space.

  A content introduction hole and an air introduction hole are provided in the bottom wall of the cylinder, and a disk member is provided in a confluence space formed inside the cylinder. The disc member divides the confluence space into an upstream space and a downstream space. A ceiling plate that supports the top plate and an annular wall that narrows the gap in the upstream space from the bottom wall of the cylinder to the top plate than the gap in the downstream space from the foam member to the top plate. Since the plate is provided with at least one through hole that allows the upstream space and the downstream space to communicate with each other, the contents and air that have passed through the content introduction hole and the air introduction hole pass through the narrow upstream space. Thus, variation in mixing can be suppressed, and uniform foam content can be ejected. The bottom wall is provided with a bottomed cylindrical convex wall that protrudes toward the filling space and forms an inlet space that leads to the upstream space, and a content introduction hole is opened at the bottom of the convex wall. The top plate is provided with a rod-shaped member that extends toward the entrance space and forms a gap with the inner peripheral surface of the convex wall, so that the flow rate is increased by passing the contents through the gap. In this way, it reaches the upstream space, so that it is further mixed with air.

  When at least one of the upper surface of the bottom wall facing the upstream space and the lower surface of the top plate is roughened, the contents passing through the upstream space and the flow of air are more likely to be disturbed. More advanced fine bubbles can be ejected.

  When a rear end opening is provided on the rear end side of the nozzle, a content return port is provided on the cylinder flange, and a check valve that closes and opens the content return port is provided on the peripheral wall of the cylinder, Since the residual content remaining in the nozzle can be pulled back into the filling space by restoring the container body, it is possible to prevent the residual content from dripping from the tip of the nozzle.

It is the partial side sectional view and the enlarged view of the principal part which show the embodiment of the foam ejection container according to the present invention. It is sectional drawing which follows AA shown in FIG. It is a partial side sectional view showing other embodiments of a foam spout container according to the present invention.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 is a partial side cross-sectional view and an enlarged view of an essential part showing an embodiment of a foam ejection container according to the present invention, and FIG. 2 is a cross-sectional view taken along AA shown in FIG.

  In FIG. 1, the code | symbol 10 is a container main body. The container body 10 has a cylindrical mouth portion 11 having an open top, and a body portion and a bottom portion (not shown) are connected to the mouth portion 11 to form a filling space M for contents inside. . Here, the container main body 10 has flexibility formed by, for example, a synthetic resin. A screw portion 12 is formed on the outer surface of the mouth portion 11. Further, as shown in FIG. 2, a small protrusion 13 and a large protrusion 14 are provided at the base of the mouth portion 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. The cylinder 20 has a peripheral wall 22 that rises from an edge of the bottom wall 21 that has a disk shape, and forms a confluence space G that is partitioned by the bottom wall 21, the peripheral wall 22, and a foam member to be described later. doing. Further, a flange 23 extending in the horizontal direction is provided on the outer peripheral surface of the peripheral wall 22, and an annular peripheral wall 24 stands on the edge of the flange 23. Further, the flange 23 is provided with at least one hole 25 penetrating the front and back, and this hole 25 functions as a content return port through which residual content in a nozzle described later flows into the filling space M.

  The bottom wall 21 is provided with a bottomed cylindrical convex wall 26 protruding toward the filling space M. The convex wall 26 includes a bottom portion 27 and a circumferential portion 28, and the bottom portion 27 and the circumferential portion 28 form an inlet space Sa connected to the merge space G. Further, a content introduction hole 29 penetrating the front and back is provided in the bottom portion 27, and an air introduction hole 30 penetrating the bottom wall 21 is provided outside the convex wall 26 of the bottom wall 21. The convex wall 26 includes an annular fitting wall 31 that hangs down from the bottom 27, and the suction that feeds the contents in the filling space M toward the contents introduction hole 29 through the fitting wall 31. The tube p is fitted and held. Further, the bottom wall 21 includes an annular shielding wall 32 that surrounds the air introduction hole 30 and hangs down.

  Reference numeral 40 denotes a base cap attached to the mouth portion 11 of the container body 10. The base cap 40 includes an annular outer wall 41 that surrounds the mouth portion 11. The screw portion 42 formed on the inner peripheral surface of the outer wall 41 is engaged with the screw portion 12 of the mouth portion 11 so as to be detachably fixed. ing. Note that it may be fixedly held by undercut instead of the screw. Further, as shown in FIG. 2, a detent rib 43 is provided at the lower end portion of the outer wall 41. Thus, when the base cap 40 is screwed in, immediately before the screwing is finished, the rotation prevention rib 43 gets over the small protrusion 13 and is held between the small protrusion 13 and the large protrusion 14. Further, the upper part of the outer wall 41 has a horizontal wall 44 extending radially inward, and the lower surface of the horizontal wall 44 is in contact with the inner peripheral surface of the mouth portion 11 to seal the inside of the filling space M. A sealing wall 45 is provided. An upper outer wall 46 is provided on the upper surface of the horizontal wall 44, and a nozzle 48 that inclines slightly upward and ejects contents from the tip opening 47 is integrated with the upper outer wall 46. It is connected. A convex portion 49 is provided on the inner surface of the upper outer wall 46 to engage the flange 23 of the cylinder 20 and hold the cylinder 20 suspended from the mouth portion 11. The base cap 40 further includes an inner wall 50 provided radially inward from the upper outer wall 46 so that the annular peripheral wall 24 of the cylinder 20 is accommodated between the upper outer wall 46 and the inner wall 50. ing. Further, an inner cylindrical wall 51 that extends in the vertical direction and is in liquid-tight contact with the inner peripheral surface of the peripheral wall 22 of the cylinder 20 is integrally connected to the rear end of the nozzle 48. The inner cylindrical wall 51 is provided with a rear end opening 52 penetrating the front and back. In the illustrated example, the rear end opening 52 is formed by cutting out the rear end side of the inner cylindrical wall 51 in a vertically long shape.

  Reference numeral 60 denotes a disk member disposed in the merge space G. The disk member 60 includes a top plate 61 extending in a substantially horizontal direction in the merge space G, and the merge space G is connected to the upstream space Sb on the side where the content introduction holes 29 and the air introduction holes 30 are provided. It is partitioned into a downstream space Sc on the side where the nozzle 48 is provided. The top plate 61 is supported by being integrally connected to the annular wall 62. Furthermore, the top plate 61 is provided with at least one through-hole 63 that allows the upstream space Sb and the downstream space Sc to communicate with each other. Further, a tapered rod-like member 64 extending toward the entrance space Sa is provided on the lower surface of the top plate 61, and a gap Sd is formed between the rod-like member 64 and the circumferential portion 28.

  Reference numeral 70 denotes a foam member disposed in the cylinder 20. The foam member 70 is made of a mesh 72 fixed to the end surface of the ring 71. The foam and the contents introduced into the cylinder 20 are caused to pass through the foam member 70 to be foamed. be able to. In the present embodiment, two foam members 70 are provided and arranged on the annular wall 62 of the disk member 60 in a back-to-back posture so that the mesh 72 faces downward and upward. Further, the lower end of the inner cylindrical wall 51 of the base cap 40 is in contact with the upper foaming member 70 to prevent the foaming member 70 from coming out. Note that the number of foam members 70 to be installed, the mesh 72 mesh roughness, and the like are appropriately changed according to the type of contents.

  In the disk member 60 and the foamed member 70 configured as described above, the position of the top plate 61 of the disk member 60 is the upstream space Sb from the bottom wall 21 to the top plate 61 as shown in the enlarged view of FIG. The gap Lb is made narrower than the gap Lc in the downstream space Sc extending from the foam member 70 on the lower side to the top plate 61.

  Reference numeral 80 denotes a check valve. The check valve 80 has a lower surface of the flange 23 as a valve seat, and an annular valve body 81 that normally abuts the lower surface and closes the hole (content return port) 25. And an annular main body portion 82 fitted and held on the 20 peripheral walls 22.

  In the foam ejection container configured as described above, when the container body 10 is squeezed, the filling space M is pressurized under the action of the check valve 80, and the contents are introduced from the suction pipe p to the contents introduction hole 29, the inlet space. It reaches the upstream space Sb through Sa and the gap Sd. The pressurized air in the filling space M passes through the air introduction hole 30 from the inside of the shielding wall 32 and reaches the upstream space Sb. Since the gap Lb in the upstream space Sb is narrow, the contents and air are mixed without variation. In this embodiment, since the flow rate of the contents is increased in the gap Sd before reaching the upstream space Sb, the mixing with the air further proceeds. The mixed contents and air pass through the through-hole 63 to reach the downstream space Sc, pass through the two foam members 70, foam, pass through the nozzle 48, and are ejected from the tip opening 47.

  Moreover, although illustration is abbreviate | omitted, it is preferable to roughen at least one of the upper surface of the bottom wall 21 and the lower surface of the top plate 61 which face the upstream space Sb. Here, roughening means, for example, providing fine irregularities on these surfaces, or forming ribs or grooves. As a result, the contents and air passing through the upstream space Sb pass through a longer distance, and the flow direction is disturbed by the roughened surface. The foam after passing through 70 can be made uniform.

  In the present embodiment, when the squeezing of the container body 10 is released and the flexible container body 10 is restored to its original shape, the filling space M becomes negative pressure, and the valve body 81 of the check valve 80 moves from the flange 23. Since the content return port 25 is separated and opened, the remaining content remaining in the nozzle 48 can be pulled back together with the outside air to the filling space M through the rear end opening 52 and the content return port 25. This effectively prevents a problem that the residual content drips from the tip opening 47 of the nozzle 48.

  Moreover, when the residual content pulled back flows into the air introduction hole 30 through the cylinder 20, the mixing ratio of the air taken into the cylinder 20 and the content changes from an expected ratio, and the foam of the content Although the quality may change, in the present embodiment, since the air introduction hole 30 is surrounded by the shielding wall 32, such a problem is effectively prevented.

  Next, another embodiment of the foam ejection container according to the present invention will be described with reference to FIG. In addition, about the site | part which has the same function as embodiment shown in FIG. 1, FIG. 2 mentioned above, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In another embodiment shown in FIG. 3, the ring 71 of the foam member 70 is omitted, and a mesh 72 is provided on the disk member 60 instead. The mesh 72 functions as a foam member. That is, the downstream space Sc in another embodiment is a range from the top plate 61 to the mesh 72. The upper surface of the disk member 60 is in contact with the inner cylindrical wall 51 to prevent the disk member 60 from coming off.

  Also in other embodiments, the contents and air are sufficiently mixed in the upstream space Sb and then pass through the mesh 72 via the through-hole 63 and the downstream space Sc, so that fine foam contents are ejected. Can be made.

  According to the present invention, the foamed member is allowed to pass after the contents and air are sufficiently mixed in a space with a narrow gap. A foam ejection container capable of ejecting fine foam can be provided.

10 Container body 11 Portion 20 Cylinder 21 Bottom wall 22 Peripheral wall 25 Hole (content return port)
26 convex wall 29 contents introduction hole 30 air introduction hole 40 base cap 48 nozzle 52 rear end opening 60 disk member 61 top plate 62 annular wall 63 through hole 64 rod-like member 70 foaming member 80 check valve G merge space M filling space p Suction pipe Sa Inlet space Sb Upstream space Sc Downstream space Sd Gap Lb Gap Lc Gap

Claims (3)

A container body having a flexible body, the inside of which is a content-filling space; a peripheral wall rising from the bottom wall; and a content introduction hole communicating with a suction pipe for the content in the bottom wall; A cylinder for introducing the contents and air into the merge space formed inside by providing an air introduction hole for passing air in the filling space, and allowing the contents and air from the merge space to flow in the cylinder. And a base cap formed by integrally connecting a nozzle that is fixedly held at the mouth portion of the container body, suspends and holds the cylinder at the mouth portion, and ejects the foamed contents. In a foam ejection container comprising:
The cylinder has a disk member disposed in the merging space, and has a bottomed cylindrical shape that forms an inlet space that protrudes toward the filling space and communicates with the upstream space inside the bottom wall of the cylinder. Forming a convex wall, providing the content introduction hole at the bottom of the convex wall;
The disk member includes a top plate that divides the merging space into an upstream space and a downstream space, and a gap between the upstream space that supports the top plate and reaches the top plate from the bottom wall from the foam member. An annular wall narrower than the gap in the downstream space reaching the top plate,
A gap is formed between the top plate and at least one through-hole that allows the upstream space and the downstream space to communicate with each other and the inner peripheral surface of the convex wall extending toward the inlet space. A foam ejection container comprising a rod-shaped member.   The foam ejection container according to claim 1, wherein at least one of the upper surface of the bottom wall facing the upstream space and the lower surface of the top plate is roughened. The base cap has a rear end opening for allowing the residual contents in the nozzle to flow into the rear end side of the nozzle,
The cylinder includes a content return port for allowing the residual content from the rear end opening to flow into the filling space in a flange engaged and held by the base cap.
On the peripheral wall of the cylinder, when the container body is squeezed, the contents return port is closed and the contents and air are sent into the cylinder, while when the container body is restored, the contents return port is opened and remains. The foam ejection container according to claim 1, further comprising a check valve that pulls the contents from the contents return port into the filling space.

Images