JP6859166B2 - Foam ejection container - Google Patents

Description

The present invention relates to a foam ejection container in which the body of the container body is squeezed to mix the content liquid contained inside the container body with air and eject the contents liquid from a nozzle in the form of bubbles.

As a container for storing various cleaning agents such as shampoo, body soap, hand soap, facial cleanser, mouthwash, and content liquid such as hair styling products, the container body is used from the viewpoint of omitting the foaming operation and making it easy to use. A foam ejection container in which the contained content liquid is mixed with air and ejected in the form of bubbles from a nozzle is often used.

In such a foam ejection container, a mixing chamber for mixing the content liquid with air is provided in the discharge flow path of the content liquid, and the body of the container body is squeezed to allow the content liquid contained in the container body to be mixed in the mixing chamber. It is mixed with air so that the content liquid is foamed into bubbles and ejected from the nozzle. In this case, in order to foam the content liquid more effectively in the form of bubbles, a foaming member made of, for example, a mesh or the like can be provided in the mixing chamber.

For example, Patent Document 1 includes a container body having a flexible body and an inside serving as a storage space for the content liquid, a nozzle cap attached to the mouth of the container body, and a mixing chamber connected to the nozzle. Described is a foam ejection container provided with a cylinder having a content liquid flow path and an air flow path formed in a section from the mixing chamber to the accommodation space. In this container, the content liquid flow path and the air flow path are partitioned by the cylinder body and the bottom of the cylinder constituting the cylinder. Further, the lower part of the cylinder body of the cylinder body is inserted into the bottom of the cylinder and fitted, so that the bottom of the cylinder is held by the cylinder body.

Japanese Unexamined Patent Publication No. 2014-46938

However, in the case of the configuration like the foam ejection container described in Patent Document 1, the fitting between the cylinder main body and the cylinder bottom becomes loose, and the air flow path formed by the cylinder main body and the cylinder bottom is partitioned. The size may change. In that case, the mixing ratio of the initially set content liquid and air changes, and the foam quality becomes unstable.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide a foam ejection container having a stable foam quality.

The foam ejection container of the present invention has a flexible body portion, and has a container body in which the inside serves as a storage space for the content liquid.
A nozzle cap portion having a nozzle and attached to the mouth portion of the container body,
A cylinder which is arranged inside the nozzle cap portion and has a mixing chamber connected to the nozzle and an air flow path and a content liquid flow path connected from the mixing chamber to the accommodation space is provided inside.
The cylinder comprises a cylinder body portion which is suspended held inside the front SL container body, and a cylinder bottom portion which is fitted and held on the cylinder main body,
The cylinder body includes a cylinder, an outer flange extending radially outward from the outer peripheral surface of the cylinder, a fitting piece hanging from the outer flange, and a radial inner side from the inner peripheral surface of the cylinder. Has an inner flange that extends to
The bottom of the cylinder is an outer cylinder located outside the cylinder and inside the fitting piece and undercut-engaged with the fitting piece, and is connected to the outer cylinder via a connecting wall and is inside the cylinder. Has an inner cylinder whose tip abuts on the inner flange.
An engaged portion that undercuts and engages with an engaging portion provided on the inner peripheral surface of the fitting piece is provided on the outer peripheral surface of the outer cylinder.
The content liquid flow path is formed inside the inner cylinder, and the air flow path is formed between the inner cylinder and the cylinder body and between the inner cylinder and the inner flange.
The lower surface of the outer flange and the upper end surface of the outer cylinder are separated from each other.

In the present invention, in the above configuration, it is preferable that the lower end of the cylinder is separated from the connecting wall.

In the present invention, in the above configuration, the cylinder body portion has a rod body connected to the inside of the inner flange in the radial direction via a connecting piece.
The bottom of the cylinder preferably has ribs on the inside of the inner cylinder that support the rod from the outside in the radial direction.

In the above configuration, the nozzle cap portion includes a mounting cap mounted on the mouth portion of the container body and a nozzle head rotatably screwed to the mounting cap.
It is preferable that the cylinder is fitted and held with respect to the nozzle head.

In the present invention, in the above configuration, it is preferable that a return flow path capable of communicating the accommodation space and the nozzle is partitioned between the mounting cap and the cylinder main body.

According to the present invention, it is possible to provide a foam ejection container having a stable foam quality.

It is sectional drawing of the foam ejection container which is one Embodiment of this invention in the front view in the state which the nozzle head is a closed position. (A) is an enlarged cross-sectional view showing a main part of the foam ejection container shown in FIG. 1, and (b) is a sectional view taken along line AA of the foam ejection container shown in FIG. 2 (a). .. FIG. 5 is a cross-sectional view of the foam ejection container shown in FIG. 1 in a side view in a state where the nozzle head is in the open position. FIG. 3 is an enlarged cross-sectional view showing a main part of the foam ejection container shown in FIG.

The foam ejection container 1 according to the embodiment of the present invention shown in FIG. 1 is also called a squeeze former, and is used as various liquid cleaning agents such as shampoo, body soap, hand soap, facial cleanser, and mouthwash, and hair styling products. In addition to accommodating the content liquid such as, etc., the content liquid is ejected in the form of bubbles.

The foam ejection container 1 includes a container body 10. The container body 10 has a bottle shape including a cylindrical mouth portion 11 having an open upper portion, a tubular body portion 12 connected to the mouth portion 11, and a bottom portion 13 for closing the lower end of the body portion 12. The inside is a storage space S for storing the content liquid. The container body 10 is made of synthetic resin, and the body portion 12 has flexibility. By squeezing the body portion 12, the volume of the storage space S is reduced, and the inside of the container body 10 is filled. It can be pressurized.

Further, the container body 10 is configured as a flat container having a flat cross section of the body portion 12, but the present invention is not limited to this, and the cross section may be circular, polygonal, or the like. Good. More specifically, the body portion 12 has a flat shape including a pair of front walls 12a arranged to face each other along the minor axis direction and a pair of side walls 12b arranged to face each other along the major axis direction. The bottom portion 13 is also formed into a flat shape that matches the shape of the body portion 12.

As shown in FIG. 2, a nozzle cap portion 2 for holding the cylinder 5 is attached to the mouth portion 11 of the container body 10. The cylinder 5 includes a cylinder body 50 and a cylinder bottom 51, as will be described later. The nozzle cap portion 2 includes a mounting cap 20 and a nozzle head 30. For example, the mounting cap 20 made of synthetic resin has a cylindrical outer peripheral wall 21 that surrounds the mouth portion 11 of the container body 10, and a protrusion 21a provided on the inner peripheral surface of the outer peripheral wall 21 is the mouth portion. It is fixed to the mouth portion 11 by undercut engagement with the protrusion portion 11a provided on the outer peripheral surface of the 11. A seal cylinder 22 is coaxially and integrally provided inside the outer peripheral wall 21, and the seal cylinder 22 is fitted into the inner peripheral surface of the mouth 11 to fit the mounting cap 20 and the mouth 11. Is sealed to prevent liquid leakage from the relevant part.

In the case shown in the figure, the mounting cap 20 is fixed to the mouth portion 11 of the container body 10 by undercut engagement (plugging), but the mounting cap 20 is screwed to the mouth portion 11 of the container body 10. It can also be fixed by.

A step portion 23 extending inward in the radial direction is integrally provided at the upper end portion of the seal cylinder portion 22, and the inner surface of the step portion 23 facing downward in the drawing is a flat and annular downward step. It is a surface 23a.

A stopper cylinder portion 24 extending upward in the drawing from the inner peripheral edge is integrally provided on the inner peripheral edge of the step portion 23. The stopper cylinder portion 24 is formed in a cylindrical shape and is arranged coaxially with the outer peripheral wall 21.

A distribution cylinder portion 25 is integrally provided inside the stopper cylinder portion 24. The circulation cylinder portion 25 is formed in a cylindrical shape coaxial with the stopper cylinder portion 24, and is connected to the inner peripheral surface of the stopper cylinder portion 24 at the lower end portion whose diameter is expanded in a flange shape. The inside of the distribution cylinder portion 25 is a distribution port 25a for the content liquid, and this distribution port 25a communicates with the mouth portion 11 of the container body 10, that is, the storage space S. Therefore, the content liquid and air in the storage space S of the container body 10 can flow out to the outside of the mounting cap 20 through the distribution port 25a.

A nozzle head 30 is mounted on the mounting cap 20. For example, the nozzle head 30 made of resin has a cylindrical cover portion 31 that surrounds the outer peripheral wall 21 of the mounting cap 20, and a cap portion 32 that is connected to the cover portion 31.

The nozzle head 30 is screwed to the outer peripheral wall 21 of the mounting cap 20 on the inner peripheral surface of the cover portion 31 and is rotatably mounted on the mounting cap 20. More specifically, a male screw portion 21b is provided on the outer peripheral surface of the outer peripheral wall 21 of the mounting cap 20, and a female screw portion 31a provided on the inner peripheral surface of the cover portion 31 of the nozzle head 30 is attached to the male screw portion 21b. It is screwed. With such a configuration, the nozzle head 30 is attached to the mounting cap 20 by screw coupling and is rotatable with respect to the mounting cap 20.

The rotation range of the nozzle head 30 with respect to the mounting cap 20 is restricted to an angle range of 90 degrees by the stopper mechanism 33. The stopper mechanism 33 is provided with, for example, a pair of stopper pieces 24a arranged on the outer peripheral surface of the stopper cylinder portion 24 at a right angle of 90 degrees in the circumferential direction, and a cap of the nozzle head 30 is provided between the stopper pieces 24a. The convex piece 32a provided on the portion 32 may be arranged. In this case, when the nozzle head 30 rotates with respect to the mounting cap 20, the convex piece 32a moves along the circumferential direction between the stopper pieces 24a, and the nozzle head 30 is closed most tightly with respect to the mounting cap 20. At the position, the convex piece 32a comes into contact with one of the stopper pieces 24a, and further rotation is restricted. On the contrary, when the nozzle head 30 rotates 90 degrees in the loosening direction from the closed position to reach the open position, the convex piece 32a abuts on the other stopper piece 24a, and further rotation of the nozzle head 30 is restricted.

With such a configuration, the nozzle head 30 is 90 degrees between the closed position shown in FIG. 1 and the open position shown in FIG. 4 with respect to the mounting cap 20 centering on the axis of the mouth portion 11 of the container body 10. It is rotatable within the angle range of. Since the nozzle head 30 is attached to the mounting cap 20 by screw coupling, when it rotates between the closed position and the open position, it moves up and down with respect to the mounting cap 20.

The nozzle head 30 is provided with a nozzle 34 for ejecting a foamy content liquid. The nozzle 34 is formed in a tubular shape, and is provided so as to project laterally from the cap portion 32. The nozzle 34 communicates with the distribution port 25a of the mounting cap 20 via the inflow / outflow hole 35. In the case shown in the figure, the nozzle 34 communicates with the distribution port 25a through a pair of inflow / outflow holes 35, but the number and shape of the inflow / outflow holes 35 can be changed in various ways. In this example, the nozzle 34 is composed of a tubular member attached to the cap portion 32, but it can also be formed integrally with the cap portion 32.

The nozzle 34 faces a direction (see FIGS. 1 and 2) along the long axis direction of the body portion 12 of the container body 10 which has a flat shape when the nozzle head 30 is in the closed position, and the nozzle head 30 is in the open position. It is configured to face in a direction (see FIGS. 3 and 4) along the minor axis direction of the body portion 12 of the container body 10 which sometimes has a flat shape.

The nozzle head 30 is integrally provided with a cylindrical opening / closing lid portion 36. The opening / closing lid portion 36 is formed in a cylindrical shape having an outer diameter corresponding to the inner diameter of the tip portion of the circulation cylinder portion 25, and when the nozzle head 30 is in the closed position, the opening / closing lid portion 36 is fitted inside the circulation cylinder portion 25 and distributed. When the port 25a is closed and the nozzle head 30 is in the open position, the distribution port 25a is opened upward away from the distribution port 25a. That is, the nozzle head 30 can rotate between the closed position where the opening / closing lid 36 closes the distribution port 25a and the open position where the opening / closing lid 36 is separated above the distribution port 25a to open the distribution port 25a. It has become.

The nozzle head 30 is provided with a seal cylinder portion 37 that is arranged between the stopper cylinder portion 24 and the distribution cylinder portion 25 and seals the flow path between the distribution port 25a and the nozzle 34.

A fixed cylinder portion 41 is integrally provided on the inner portion of the opening / closing lid portion 36 of the nozzle head 30 coaxially with the opening / closing lid portion 36. A ridged tubular fitting portion 50a provided on the cylinder body 50 is fitted and held in the fixed cylinder portion 41. The cylinder body 50 is suspended and held inside the container body 10 by being fitted and held by the nozzle head 30. In the case shown in the figure, the cylinder body 50 is made of synthetic resin and is formed in a cylindrical shape having a structure divided into upper and lower halves, and is fitted to the fixed cylinder 41 at the fitting portion 50a provided at the upper end thereof to fit the nozzle head. It is once supported by 30. As a result, when the nozzle head 30 rotates between the open position and the closed position, the cylinder body 50 rotates together with the nozzle head 30 and moves up and down with respect to the mounting cap 20 together with the nozzle head 30. It has become.

A cylinder bottom portion 51 is attached to the lower portion of the cylinder body portion 50. Further, inside the cylinder body 50, a mixing chamber 52 connected to the distribution port 25a is formed as a section. The cylinder bottom 51 forms an air introduction hole 53 and a liquid introduction hole 54 on the lower end side of the cylinder body 50. The air introduction hole 53 communicates the mixing chamber 52 with the accommodating space S (inside the container body 10), and the air inside the accommodating space S can be introduced into the mixing chamber 52. On the other hand, a pipe 55 extending to the bottom 13 of the container body 10 is attached to the bottom 51 of the cylinder. The pipe 55 is connected to the bottom portion 51 of the cylinder at one end (upper end) of the pipe 55 and is connected to the liquid introduction hole 54, is bent in the protruding direction of the nozzle 34 at the intermediate portion thereof, and the other end (lower end) is the container body. It is located at the bottom 13 of the 10. The liquid introduction hole 54 communicates the mixing chamber 52 with the accommodating space S at the bottom portion 13 via the pipe 55, and the content liquid contained in the accommodating space S can be introduced into the mixing chamber 52.

The pipe 55 can be made of, for example, a synthetic resin material and has flexibility.

Inside the cylinder body 50, a foam member 56 is fitted and held on the upper side (downstream side) of the mixing chamber 52. As the foaming member 56, a member having a structure in which a mesh is fixed to an end face of a tubular body can be used. The foaming member 56 is not limited to the structure provided with the tubular body and the mesh as described above, and various types such as those using a sponge or a porous body are used depending on the type of the content liquid and the like. Those having a configuration can be used. Further, the number of foamed members 56 to be installed can be variously changed according to the type of the content liquid and the like.

The inside of the cylinder body 50 on the upper side of the foaming member 56 is a discharge flow path 57 connected to the mixing chamber 52. A discharge hole 58 is provided in the cylinder body 50 in order to allow the discharge flow path 57 to communicate with the distribution port 25a. That is, the mixing chamber 52 communicates with the distribution port 25a via the discharge flow path 57 and the discharge hole 58, and further communicates with the nozzle 34 via the distribution port 25a and the inflow / outflow hole 35. The number and shape of the discharge holes 58 provided in the cylinder body 50 can be changed in various ways.

The cylinder body 50 includes a substantially cylindrical cylinder 50b. Further, an inner flange 50c extending inward in the radial direction is provided inside the cylinder body 50b, and a rod body 50d extending in the axial direction of the cylinder body 50 is provided further inside the inner flange 50c. ing. Here, the rod body 50d is held by integrally connecting the upper portion thereof with the connecting piece 50e extending upward from the inner flange 50c. A plurality of connecting pieces 50e are provided at intervals in the circumferential direction (in the illustrated example, a total of three connecting pieces are evenly arranged). The cylinder body 50 includes an outer flange 50f extending radially outward from the cylinder 50b and a fitting piece 50g extending downward from the outer flange 50f. The fitting piece 50 g may have an annular shape that is continuous in the circumferential direction, or may have a shape that is intermittent in the circumferential direction. A protrusion 50h (engagement portion) is provided on the inner peripheral surface of the fitting piece 50g. In this example, the protrusion 50h is continuously provided in the circumferential direction over the entire circumference, but the present invention is not limited to this, and the protrusion 50h may have an intermittent shape in the circumferential direction.

Further, the cylinder bottom 51 includes an outer cylinder 51a located outside the cylinder 50b, an inner cylinder 51b held inside the cylinder 50b, a connecting wall 51c connecting the outer cylinder 51a and the inner cylinder 51b, and a connecting wall. A tubular pipe holding portion 51d for fitting and holding the hanging pipe 55 from 51c is provided.

On the upper outer peripheral surface of the outer cylinder 51a, a protrusion 51e (engaged portion) that undercuts and engages with the protrusion 50h of the fitting piece 50g is provided. The protrusion 51e is arranged above the protrusion 50h. Further, a gap G is provided between the upper end surface of the outer cylinder 51a and the lower surface of the outer flange 50f. In this example, the protrusions 51e are provided intermittently in the circumferential direction, but the present invention is not limited to this, and the protrusions 51e may have a shape continuous in the circumferential direction over the entire circumference. Further, in this example, the gap G is continuously provided in the circumferential direction.

As shown in FIG. 2, the inner cylinder 51b is arranged on the inner peripheral surface of the cylinder 50b, and its tip (upper end) is in contact with the lower surface of the inner flange 50c.

A space 50i is formed between the lower end surface of the tubular body 50b and the upper surface of the connecting wall 51c. Further, as shown in FIG. 2B, a plurality of ribs 51f supporting the rod body 50d from the outside in the radial direction are provided on the inner peripheral surface of the inner cylinder 51b at intervals in the circumferential direction (illustration example). Then, 4 pieces are provided evenly. Further, a plurality of outer groove portions 51g are provided on the outer peripheral surface of the inner cylinder 51b at intervals in the circumferential direction (four in an even arrangement in the illustrated example), and the outer groove portions are provided on the upper surface of the inner cylinder 51b. An upper groove portion 51h connected to 51 g is provided. The cylinder bottom 51 is provided with a plurality of air introduction holes 53 for taking in air inside the cylinder bottom 51 at intervals in the circumferential direction at the connecting portion between the outer cylinder 51a and the connecting wall 51c. In the illustrated example, the air introduction holes 53 are provided at four locations at intervals in the circumferential direction. In this example, an outer groove portion 51g and an upper groove portion 51h are provided on the surface of the inner cylinder 51b to form an air flow path, but the present invention is not limited to this, and the air flow path is limited to a groove on the inner peripheral surface of the cylinder body 50b. Or a groove may be provided on the lower surface of the inner flange 50c.

The cylinder 5 configured as described above has a content liquid flow path through which the content liquid in the accommodation space S is passed in the order of the gap between the pipe 55 and the rib 51f and the gap between the connecting pieces 50e. It can be introduced into the mixing chamber 52 formed inside. On the other hand, the air in the accommodation space S is introduced into the mixing chamber 52 through an air flow path that passes through the air introduction hole 53, the space 50i, the outer groove portion 51g, the upper groove portion 51h, and the gap between the connecting pieces 50e in this order. Will be done.

In addition to the discharge flow path 57, a return flow path 60 is provided between the storage space S of the container body 10 and the nozzle 34, which is partitioned between the mounting cap 20 and the cylinder body 50. That is, the distribution port 25a communicates with the storage space S of the container body 10 via the return flow path 60.

A check valve 61 is provided in the return flow path 60. The check valve 61 includes a cylindrical holding portion 61a that is fitted and held on the outer peripheral surface of the cylinder body 50, and an annular and film-shaped sealing film portion 61b that extends radially outward from the outer peripheral surface of the holding portion 61a. have.

The seal film portion 61b elastically contacts the downward stepped surface 23a of the mounting cap 20 from below on its outer peripheral edge. With such a configuration, the check valve 61 blocks the flow of the content liquid and air from the accommodation space S of the container body 10 to the nozzle 34 side through the return flow path 60, and also blocks the flow of the content liquid and air from the nozzle 34 side. It can be operated so as to allow the flow of the content liquid or air to the side of the storage space S of the container body 10 through the container body 10.

As shown in FIG. 2, the cylinder body 50 is provided with a support flange 50j that projects radially outward of the fitting piece 50g on the lower side of the check valve 61, and is provided on the outer peripheral edge of the support flange 50j. Is integrally provided with a support portion 50k facing the seal cylinder portion 22. The support flange 50j and the support portion 50k are intermittent in the circumferential direction, and a gap between them constitutes a part of the return flow path 60.

In the present embodiment, the annular and film-shaped seal film portion 61b is adopted as the valve body of the check valve 61, but the present invention is not limited to this embodiment, and is not limited to this embodiment, for example, according to the cross-sectional shape of the mounting cap 20. It may be rectangular or the like.

A foam regulating member 70 is provided inside the nozzle 34. The foam adjusting member 70 has a structure in which a mesh is fixed to the end face of the tubular body. The foam adjusting member 70 foams the mixture of the content liquid foamed by the foaming member 56 and air again so as to form finer bubbles. The foam regulating member 70 is not limited to a structure having a tubular body and a mesh, and various configurations can be used depending on the type of the content liquid and the like.

In the present embodiment, the nozzle head 30 in which the cap portion 32 and the cover portion 31 are integrally molded is used, but the present embodiment is not limited to this embodiment. For example, the cap portion 32 and the cover portion 31 may be configured as separate parts, and the two may be connected by means such as screw engagement or fitting.

Next, a method of using the foam ejection container 1 having such a configuration will be described.

As shown in FIGS. 3 and 4, by setting the nozzle head 30 in the open position, the opening / closing lid portion 36 is separated above the distribution port 25a to open the distribution port 25a, and the seal film portion 61b of the check valve 61 is opened. The outer peripheral edge of the mounting cap 20 is in contact with the downward stepped surface 23a of the mounting cap 20, and the foam ejection container 1 is in a usable state in which the content liquid can be ejected by squeezing the body portion 12. When the nozzle head 30 is in the open position, the nozzle 34 is directed in the direction along the minor axis direction of the flat body portion 12.

By squeezing the body 12 of the container body 10 with the nozzle head 30 in the open position, the foamy content liquid can be ejected from the nozzle 34. That is, when the body portion 12 is squeezed, the content liquid contained in the storage space S of the container body 10 is introduced into the mixing chamber 52 through the pipe 55 and the liquid introduction hole 54, and the air in the container body 10 is released. It is introduced into the mixing chamber 52 through the air introduction hole 53, and the content liquid is mixed with air inside the mixing chamber 52 to foam and foam. Further, the foamed content liquid is discharged from the discharge hole 58 to the distribution port 25a through the discharge flow path 57 while being further foamed by passing through the foaming member 56. Then, the foam-like content liquid discharged to the distribution port 25a reaches the nozzle 34 through the inflow / outflow hole 35, becomes finer foam quality by the foam adjusting member 70, and is ejected in the form of foam from the opening of the nozzle 34 to the outside. To.

When the squeezing of the body portion 12 is released after the content liquid is ejected, the body portion 12 is restored to its original shape and a negative pressure is generated in the container body 10, and the check valve 61 is opened by this negative pressure. The content liquid remaining inside the nozzle 34 is drawn into the container body 10 through the return flow path 60 together with the air (outside air) sucked from the nozzle 34. With such a function, which is also called a suckback function, the content liquid remaining inside the nozzle 34 after ejection is drawn into the container body 10 together with air, and the content liquid drips from the opening of the nozzle 34 to the outside. Can be prevented.

On the other hand, when not in use, as shown in FIGS. 1 and 2, the nozzle head 30 is rotated 90 degrees with respect to the mounting cap 20 to close the position, so that the opening / closing lid portion 36 closes the distribution port 25a. The bubble ejection container 1 can be disabled by closing the nozzle 34 and blocking the communication between the nozzle 34 and the storage space S of the container body 10. When the nozzle head 30 is in the closed position, the nozzle 34 is directed in the direction along the long axis direction of the flat body portion 12.

As described above, in the foam ejection container 1, the nozzle head 30 can be simply rotated from the open position to the closed position to make the foam ejection container 1 unusable, and the body portion 12 can be used when not in use. Even if it is suddenly squeezed, it is possible to reliably prevent the content liquid in the container body 10 from leaking to the outside through the nozzle 34.

As described above, in the present embodiment, the outer cylinder 51a of the cylinder bottom 51 is arranged between the cylinder 50b of the cylinder body 50 and the fitting piece 50g, and the protrusion 50h of the fitting piece 50g is arranged. The cylinder body 50 and the cylinder bottom 51 are firmly fitted to each other by holding the cylinder body 50 and the protrusion 51e in an undercut engagement to prevent them from coming off. As a result, the shapes of the content liquid flow path and the air flow path that are partitioned between the cylinder body 50 and the cylinder bottom 51 are stabilized, so that the mixing ratio of the content liquid and air supplied to the mixing chamber is stable. However, deterioration of foam quality can be prevented. Further, by providing a gap G between the upper end surface of the outer cylinder 51a of the cylinder bottom 51 and the lower surface of the outer flange 50f, the tip (upper end) of the inner cylinder 51b is more reliably brought into contact with the lower surface of the inner flange 50c. Can be made to. As a result, the shape of the air flow path partitioned between the outer groove portion 51g and the tubular body 50b, and between the upper groove portion 51h and the inner flange 50c is further stabilized, so that the foam quality is also more stable.

Further, in the foam ejection container 1 of the present embodiment, the lower end of the cylinder body 50b of the cylinder body 50 and the connecting wall 51c are separated from each other to form a space 50i. By providing such a space 50i, the tip of the inner cylinder 51b can be more reliably brought into contact with the lower surface of the inner flange 50c. As a result, the shape of the air flow path including the outer groove portion 51g and the upper groove portion 51h is further stabilized, so that the foam quality is also more stable. Further, this space 50i forms a part of the air flow path.

Further, in the foam ejection container 1 of the present embodiment, a rib 51f is provided on the bottom portion 51 of the cylinder so as to project from the inner peripheral surface of the inner cylinder 51b and support the rod body 50d of the cylinder body 50 from the outside in the radial direction. As a result, the position of the cylinder bottom 51 with respect to the cylinder body 50 becomes more stable. As a result, according to the foam ejection container 1 of the present embodiment, more stable foam can be ejected.

It goes without saying that the present invention is not limited to the above-described embodiment and can be variously modified without departing from the gist thereof.

For example, in the present embodiment, the nozzle 34 is formed with a circular cross section, and the foaming member 56 and the foam adjusting member 70 are also formed with a circular cross section, but the present invention is not limited to this, and the nozzle 34, the foaming member 56, and the foam adjusting member 70 are not limited to this. The shape can be variously changed, for example, an elliptical shape.

1 Foam ejection container 2 Nozzle cap part 5 Cylinder 10 Container body 11 Mouth part 11a Protrusion part 12 Body part 12a Front wall 12b Side wall 13 Bottom part 20 Mounting cap 21 Outer wall wall 21a Protrusion part 21b Male screw part 22 Seal cylinder part 23 Step part 23a Downward Step surface 24 Stopper cylinder part 24a Stopper piece 25 Flow cylinder part 25a Flow port 30 Nozzle head 31 Cover part 31a Female thread part 32 Cap part 32a Convex piece 33 Stopper mechanism 34 Nozzle 35 Outflow / inlet hole 36 Opening / closing lid part 37 Seal cylinder part 41 Fixed cylinder part 50 Cylinder body part 50a Fitting part 50b Cylinder body 50c Inner flange 50d Rod body 50e Connecting piece 50f Outer flange 50g Fitting piece 50h Protrusion part (engagement part)
50i Space 50j Support flange 50k Support part 51 Cylinder bottom 51a Outer cylinder 51b Inner cylinder 51c Connecting wall 51d Pipe holding part 51e Projection part (engaged part)
51f Rib 51g Outer groove 51h Upper groove 52 Mixing chamber 53 Air introduction hole 54 Liquid introduction hole 55 Pipe 56 Foam member 57 Discharge flow path 58 Discharge hole 60 Return flow path 61 Check valve 61a Holding part 61b Seal film part 70 Foam control Member G Gap S Storage space

Claims (5)

A container body that has a flexible body and the inside is a storage space for the content liquid.
A nozzle cap portion having a nozzle and attached to the mouth portion of the container body,
A cylinder which is arranged inside the nozzle cap portion and has a mixing chamber connected to the nozzle and an air flow path and a content liquid flow path connected from the mixing chamber to the accommodation space is provided inside.
The cylinder comprises a cylinder body portion which is suspended held inside the front SL container body, and a cylinder bottom portion which is fitted and held on the cylinder main body,
The cylinder body includes a cylinder, an outer flange extending radially outward from the outer peripheral surface of the cylinder, a fitting piece hanging from the outer flange, and a radial inner side from the inner peripheral surface of the cylinder. Has an inner flange that extends to
The bottom of the cylinder is an outer cylinder located outside the cylinder and inside the fitting piece and undercut-engaged with the fitting piece, and is connected to the outer cylinder via a connecting wall and is inside the cylinder. Has an inner cylinder whose tip abuts on the inner flange.
An engaged portion that undercuts and engages with an engaging portion provided on the inner peripheral surface of the fitting piece is provided on the outer peripheral surface of the outer cylinder.
The content liquid flow path is formed inside the inner cylinder, and the air flow path is formed between the inner cylinder and the cylinder body and between the inner cylinder and the inner flange.
A foam ejection container characterized in that the lower surface of the outer flange and the upper end surface of the outer cylinder are separated from each other. The foam ejection container according to claim 1, wherein the lower end of the cylinder is separated from the connecting wall. The cylinder main body has a rod body connected to the inside of the inner flange in the radial direction via a connecting piece.
The foam ejection container according to claim 1 or 2, wherein the bottom of the cylinder has ribs that support the rod body from the outside in the radial direction inside the inner cylinder. The nozzle cap portion includes a mounting cap mounted on the mouth of the container body and a nozzle head rotatably screwed to the mounting cap.
The foam ejection container according to any one of claims 1 to 3, wherein the cylinder is fitted and held with respect to the nozzle head. The foam ejection container according to claim 4, wherein a return flow path capable of communicating the accommodating space and the nozzle is formed between the mounting cap and the cylinder main body.

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