JP7355661B2 - pouring unit - Google Patents

Description

The present invention relates to a dispensing tool that can be engaged with, for example, the mouth of a container, and more particularly to a dispensing unit that can be attached to a flexible container made of, for example, a flexible packaging material and capable of dispensing a fixed amount.

For example, as exemplified in Patent Document 1 and Patent Document 2, it is known that a fixed amount of liquid contents stored in a container is poured out or discharged by a pressing operation or the like (hereinafter referred to as fixed amount dispensing). ing. Note that liquid contents stored in such containers include, for example, laundry detergents, fabric softeners, and various detergents such as shampoos and conditioners.

On the other hand, after the liquid content in the container is consumed, it is generally refilled with new content stored in a refillable container and reused. As such a refill container, for example, a pouch container (an example of a flexible container) illustrated in Patent Document 3 is also known.

Publication No. 61-35155 Utility Model Publication No. 63-190065 Japanese Patent Application Publication No. 2016-003056

A quantitative dispensing cap that can easily measure a predetermined amount is highly convenient, and by using the containers disclosed in Patent Document 1 and Patent Document 2, users can easily dispense a fixed amount. ing. On the other hand, in recent years, in order to reduce the amount of resin used in containers, conventional detergent bottles can be replaced with containers made of flexible packaging materials (such as pouch containers).

However, if the pouch container is simply used for dispensing a fixed amount, various problems will occur as shown below. That is, since the pouch container has excellent flexibility, when pressing the pressing plate on the cap side as in Patent Document 1, for example, it is difficult for users regardless of age or gender to continue supporting the container body.

On the other hand, it is also conceivable to store the contents in the cap and measure it by pressing the container body side, for example. However, even in such a case, if you dispense too much content than the fixed amount, you will not be able to put it back into the container, and if you accidentally press the container when dispensing the content after measuring it. If the liquid content is additionally discharged and the content decreases, the volume of the container decreases, resulting in problems such as the inability to maintain its posture during storage.

As described above, various problems arise when conventional bottle structures are simply applied to flexible containers such as pouches, but no structure capable of solving the above problems has yet been proposed.
Therefore, one of the objects of the present invention is to make it possible to dispense a fixed amount while suppressing over-dispensing and erroneous dispensing in a flexible container, and furthermore, to make it possible to change the external shape of the container due to volume reduction due to the use of the contents, if necessary. The object of the present invention is to provide a pouring tool having a structure that can be suppressed.

In order to solve the above problems, a dispensing unit according to one embodiment of the present invention (1) is attached to the mouth of a flexible package container, and a flow path is formed through which the contents of the flexible package container can be poured out. a spouting cylinder having a main cylindrical part, a sliding cylindrical part inserted inside the main cylindrical part, a top plate connected to an upper end of the sliding cylindrical part to form a spout, and the top plate. a cap body having a skirt wall hanging down from an outer edge of the cap body, an upper lid having a closure plug for closing the spout and attachable to the cap body, and a cap body disposed at the upper end of the sliding cylindrical part. a check valve capable of closing an upper end opening of the sliding cylindrical portion, and a measuring space capable of storing the contents is formed by the top plate, the pouring tube, the skirt wall, and the sliding cylindrical portion; The upper lid is formed with a push-down protrusion that pushes down the check valve when attached to the cap body to communicate the metering space with the inside of the slide cylindrical part, and the push-down protrusion pushes down the check valve. In this state, the sliding cylindrical portion and the check valve slide relative to the main cylindrical portion in the axial direction, so that the negative pressure generated inside the sliding cylindrical portion causes the contents to be It is characterized by being sucked up into the inside of the sliding cylindrical part.

In the pouring unit described in (1) above, (2) the pouring cylinder includes a top plate and a peripheral wall hanging down from a peripheral edge of the top plate, and an upper outer edge of the peripheral wall has a groove in the axial direction. An outer ring part is formed whose diameter increases upwardly and can come into close contact with the inner surface of the skirt wall, and the main cylindrical part is arranged to hang down from the top plate, and has an upper end. An inner ring part that can be brought into close contact with the sliding cylindrical part is formed in the part so as to extend upward, and the outer ring part and the inner surface of the skirt wall are in close contact with each other, and the inner ring part and the sliding cylindrical part are in close contact with each other. It is preferable that the measurement space is kept sealed by being in close contact with the outer surface of the measurement space.

Further, in the spouting unit according to (1) or (2) above, (3) the upper lid is hinged to the cap body via a hinge joint, and the hinge joint and the spout are connected together. It is preferable that the slide cylindrical portion is disposed between them.

Further, in the spouting unit according to any one of (1) to (3) above, (4) the check valve is configured to open an upper end of the sliding cylindrical portion when the upper lid is detached from the cap body. It is preferable to occlude the

Further, in the pouring unit according to any one of (4) above, (5) when the upper lid is removed from the cap body and the upper end opening is closed by the check valve, the pouring unit of the cap body is Preferably, the contents stored in the metering space are poured out through the outlet.

Further, in the spouting unit according to any one of (1) to (5) above, (6) by pushing the cap body into the spout tube with the top lid reattached to the cap body, It is preferable that the air remaining in the measurement space is returned to the inside of the flexible container.

Further, in the pouring unit according to any one of (1) to (6) above, (7) at least one flow hole through which the contents can pass is formed at the bottom of the main cylindrical part. It is also preferable that an engaging convex portion that can be engaged with the inner wall of the sliding cylindrical portion is provided.

Furthermore, in the spouting unit according to any one of (1) to (7) above, (8) it is preferable that the spout tube is a spout that can be attached to the mouth of the flexible packaging container.

According to the present invention, it is possible to dispense a fixed amount from a flexible container while suppressing overdispensing and erroneous dispensing, and furthermore, it is possible to suppress changes in the appearance of the container due to volume reduction due to use of the contents.

It is a perspective view showing the appearance of the pouring unit of an embodiment. It is a sectional view showing a cross section of a pouring unit of an embodiment. FIG. 2 is a schematic diagram comparing the disassembled state and the assembled state of the pouring unit of the embodiment. It is a schematic diagram showing the structure of the pouring cylinder among the pouring units of the embodiment. It is a schematic diagram which shows the structure of a cap body and an upper lid among the pouring units of embodiment. It is a schematic diagram which shows the structure of a check valve among the pouring units of embodiment. It is a flow chart showing a quantitative dispensing method in an embodiment. FIG. 2 is a schematic diagram showing a state transition diagram (Part 1) of a dispensing unit in a quantitative dispensing method. FIG. 9 is a schematic diagram illustrating the mechanism by which the contents are sucked up into the slide cylindrical portion in FIG. 8; FIG. 3 is a schematic diagram showing a state transition diagram (part 2) of the dispensing unit in the quantitative dispensing method. It is a schematic diagram which shows the state of the content stored in the measuring space before quantitative dispensing. It is a schematic diagram which shows the state transition diagram (part 3) of the pouring unit in the quantitative pouring method.

Embodiments for suitably implementing the present invention will be described below.
In this embodiment, for convenience of explanation, the X, Y, and Z directions are appropriately set in the explanation using the drawings, but this is for convenience of explanation and does not limit the present invention excessively.

[Pour unit 100]
As shown in FIGS. 1 to 3, the spout unit 100 in this embodiment includes at least a spout barrel 10, a cap body 20, an upper lid 30, and a check valve 40. Note that this pouring unit 100 is preferably made of a known synthetic resin such as polypropylene or polyethylene. Moreover, as described later, when a scale for measuring is provided, at least one of the spout tube 10 and the cap body 20 may be transparent.

As an example, in the pouring unit 100 of this embodiment, the pouring tube 10 and the check valve 40 described above can be made of polypropylene, and the cap body 20 and the upper lid 30 can be made of polypropylene. In this way, in the pouring unit 100 of the present embodiment, the pouring cylinder 10 and the cap body 20 may be formed of mutually different resin materials.

<Pour tube 10>
Next, with further reference to FIG. 4, the configuration of the spout barrel 10 that constitutes the spout unit 100 of this embodiment will be described. As shown in the figure, the dispensing tube 10 is attached to the mouth of a known flexible container (not shown) such as a pouch, and has a flow path through which the contents C of the flexible container can be poured out. The main cylindrical portion 16 is formed.
The content C applicable to this embodiment is not particularly limited, and various known liquids suitable for quantitative dispensing may be exemplified, such as the above-mentioned liquid detergent, fabric softener, or seasoning.

More specifically, the pouring cylinder 10 in this embodiment includes a top plate 11, a peripheral wall 12 hanging from the periphery of the top plate 11, and a predetermined distance apart from the peripheral wall 12 via the bottom 14. The flange portion 15 includes an outer wall 13 and a flange portion 15 extending radially outward on the outer surface of the outer wall 13.

Note that the upper part of the peripheral wall 12 (upper end side in the Z direction) has a double wall structure, and is separated into an inner peripheral wall 12a and an outer ring part 12b. The upper end of the inner peripheral wall 12a is connected to the peripheral edge of the top plate 11 described above. Further, an outer ring portion 12b whose diameter increases upward in the axial direction (Z direction) is provided on the upper outer edge of the pouring tube 10, and the outer ring portion 12b and the inner surface of a skirt wall 23, which will be described later, are provided. The hermetic sealing of the measurement space CS is maintained by the close contact between the two.

The installation height (height from the bottom 14) of the flange portion 15 provided on the outer wall 13 is not particularly limited, and may be appropriately set, for example, depending on the size of the anti-slip processing 13a described later. In this embodiment, it is preferable that a non-slip finish 13a be applied to the outer wall 13 above the flange portion 15. Thereby, the user can appropriately separate the dispensing tube 10 and the cap body 20 when dispensing a fixed amount, which will be described later.

Regarding the method of connecting the spouting unit 100 to the mouth of the flexible container, for example, the spout unit 100 can be connected to the mouth of the flexible container via the flange portion 15 (by welding, adhesion using an adhesive, etc.). Regarding the method of connecting the flange portion 15 and the flexible container, for example, as exemplified in Patent Document 3, a configuration in which the upper surface of the flange portion 15 and the flexible container (pouch) are welded can be applied. Although the upper surface of the flange portion 15 is set as the welding surface in this embodiment, the present invention is not limited to such a configuration, and may be a configuration in which the lower surface of the flange portion 15 and a flexible container (pouch) are welded.

Further, as shown in FIG. 4, a first locking protrusion 19 is formed on the outer surface of the peripheral wall 12 that faces the outer wall 13. As shown in FIG. As shown in FIG. 2 etc., this first locking protrusion 19 has the function of supporting and guiding the tip of the skirt wall 23 of the cap body 20 when the skirt wall 23 is inserted, and the function of supporting and guiding the tip of the skirt wall 23 of the cap body 20, which will be described later. 20 second locking protrusions 25 and a function of engaging with them. Note that it is preferable that a plurality of first locking protrusions 19 are arranged with predetermined gaps in the circumferential direction.

As shown in the figure, the main cylindrical portion 16 is disposed so as to hang downward from the center of the top plate 11 so as to have a recessed portion. More specifically, as shown in FIG. 4 etc., the main cylindrical portion 16 of this embodiment is separated into an annular outer wall 16a and an inner ring portion 16b at the upper end (top plate 11 side) of the main cylindrical portion 16. .

Of these, the annular outer wall 16a is connected to the top plate 11 so as to form the above-mentioned recess. On the other hand, the inner ring portion 16b separated near the upper end of the main cylindrical portion 16 is in close contact with the outer surface of the slide cylindrical portion 21 of the cap body 20, as shown in FIG. 2 and the like. Due to the close contact between the inner ring portion 16b and the slide cylinder portion 21, unintentional leakage of the contents C is suppressed.

Further, at the lower end of the main cylindrical portion 16 in which a flow path for the contents C is formed, a first communication hole 17 and an engaging convex portion 18 are provided. More specifically, an engagement protrusion 18 is arranged at the center of the flow path at the lower end of the main cylindrical part 16, and one or more first flow holes are arranged around the engagement protrusion 18. 17 is formed. In this way, at least one first flow hole 17 through which the contents C can pass is formed at the bottom of the main cylindrical part 16, and an engagement protrusion 18 that can engage with the inner wall of the slide cylindrical part 21 is provided. It will be done. As a result, when dispensing a fixed amount of content C, which will be described later, the content C stored in the flexible container flows into the channel in the main cylindrical portion 16 via the first flow hole 17.

The engagement convex portion 18 of this embodiment is configured to be able to fit into the inner surface of the slide cylindrical portion 21 described above. This makes it possible to maintain the state in which the slide cylindrical portion 21 is inserted to the lower end of the main cylindrical portion 16 in the initial state, and prevents the contents C from unintentionally entering the flow path, for example, when transporting an unused product. It is possible to prevent this from happening.
As described above, the spout tube 10 of this embodiment is preferably a spout that can be attached to the mouth of a flexible container. However, the pouring tube 10 does not necessarily have to be a spout, and may be integrally formed with the container.

<Cap body 20>
As shown in FIG. 5 etc., the cap body 20 of this embodiment includes a slide cylindrical portion 21 inserted inside the main cylindrical portion 16 described above, and a spout 22a connected to the upper end of this slide cylindrical portion 21. It is configured to include a formed top plate 22 and a skirt wall 23 hanging down from the outer edge of this top plate 22. The contents C stored in the flexible container are finally discharged from the spout 22a when dispensing a fixed amount. As shown in FIG. 5, one or more engagement hook portions 23b may be formed on the outer edge of the top plate 22 to facilitate engagement with the inner side of the circumferential wall 32 of the top lid 30. .

In addition, in the cap body 20 of the present embodiment, the content C that has passed through the flow path in the sliding cylindrical portion 21 is placed in the center of the upper end (top plate 22 side) of the sliding cylindrical portion 21 in the weighing space CS (described later). ) is formed with an inlet hole 24 for flowing into the inlet. Further, the annular peripheral wall 22b is formed at the center of the upper end of the slide cylindrical portion 21 so as to form a recessed portion having a bottom plate in which the inlet hole 24 described above is formed.

Note that a second flow hole 22c is formed between the annular peripheral wall 22b located at the periphery of the bottom plate and the inflow hole 24, through which the contents C that have passed through the inflow hole 24 flow into the metering space CS. There is. As a result, the content C stored in the flexible container passes through the flow path in the slide cylindrical part 21 when dispensing a fixed amount, and then passes from the inflow hole 24 to the second flow hole 22c and enters the metering space CS. It is possible to reach.

The skirt wall 23 of the cap body 20 is configured to hang down from the periphery of the top plate 22, and its lower end side can be inserted between the peripheral wall 12 and the outer wall 13 of the pouring tube 10 (see FIG. 2, etc.). As is clear from FIGS. 2 and 5, the inner surface of the skirt wall 23 of this embodiment has a second locking protrusion that can be engaged with the first locking protrusion 19 of the spouting tube 10 described above. 25 is formed.

Further, a hook portion 23a is formed on the upper peripheral edge of the skirt wall 23, which can be grasped when the cap body 20 is separated from the spouting cylinder 10 in the axial direction. One or more hook portions 23a are formed on the upper peripheral edge of the skirt wall 23 so as to extend in the radial direction. Thereby, for example, a user using the contents C can easily separate the cap body 20 from the spouting cylinder 10 along the axial direction by hooking a finger or the like on the hook part 23a.

A plurality of second locking protrusions 25 of this embodiment are formed in correspondence with the first locking protrusions 19 with predetermined gaps along the circumferential direction. For example, when not in use or after dispensing a fixed amount, the dispensing tube 10 and the cap body 20 may be rotated relative to each other around the axis to engage the first locking protrusion 19 and the second locking protrusion 25. becomes possible. Thereby, the cap body 20 can be locked to the spouting tube 10 when not in use or in an initial state, and it is possible to prevent these from separating unintentionally.

<Top lid 30>
Next, the upper lid 30 of the pouring unit 100 of this embodiment will be described with reference to FIGS. 1 to 3 and 5. As is clear from these figures, the upper lid 30 of the present embodiment is configured to have a closure plug 33 that closes the spout 22a of the cap body 20 described above and can be attached to the upper part of the cap body 20. .

More specifically, the upper lid 30 includes an upper plate 31 that faces the top plate 22 when attached to the cap body 20, a circumferential wall 32 that hangs down from the periphery of the upper plate 31, and the above-mentioned obstruction plug 33. , a push-down protrusion 34 that pushes down a check valve 40 (described later) when attached to the cap body 20 and communicates the metering space CS with the inside of the slide cylindrical portion 21; It is configured to include a hook portion 36 used for such purposes, and an engaging protrusion 37 that is formed inside the circumferential wall 32 and engages with the outer edge of the top plate 22 of the cap body 20.

Furthermore, as understood from FIG. 5 and the like, it is desirable that the upper lid 30 be hingedly connected to the cap body 20 via a hinged joint part 35. Thereby, when opening the spout 22a of the cap body 20 and pouring out a fixed amount of the contents C, it is possible to prevent the upper lid 30 from detaching from the cap body 20 and being lost. There is no particular restriction on the formation position of the hinge joint 35 as long as the above function can be achieved, but for example, the sliding cylindrical part 21 or the annular peripheral wall 22b may be disposed between the hinge joint 35 and the spout 22a. (See FIG. 2, etc.). In other words, it is preferable that the push-down protrusion 34 be positioned between the hinge joint 35 and the occlusion plug 33.

<Check valve 40>
Next, the check valve 40 of this embodiment will be described with reference to FIGS. 2, 6, and the like.
As shown in these figures, the check valve 40 of this embodiment is arranged at the upper end of the slide cylindrical portion 21 described above so as to be able to close the upper end opening (inflow hole 24) of the slide cylindrical portion 21. It is composed of

More specifically, as shown in FIG. 6, the check valve 40 includes a valve portion 41 that can close the upper end opening (inflow hole 24) of the slide cylindrical portion 21, and a circumference surrounding the valve portion 41. It is configured to include a shaped base 42 and an elastic support part 43 whose one end is connected to the valve part 41 and whose other end is connected to the inner circumferential surface of the circumferential base 42 .

Therefore, as will be described later, when the push-down projection 34 of the upper lid 30 pushes down the valve part 41, the valve part 41 is pushed down with respect to the circumferential base 42 via the elastic support part 43, as shown in the lower part of FIG. It will be done. In this way, in the check valve 40 of this embodiment, when the upper lid 30 is attached to the cap body 20, the push-down protrusion 34 pushes down the valve part 41 and opens the upper end opening (inflow hole 24) of the slide cylindrical part 21. It has a communication function.

On the other hand, when the pressing operation by the pressing projection 34 of the upper lid 30 is released, the restoring action of the elastic support section 43 pushes the valve section 41 upward with respect to the circumferential base section 42 and returns it to its original position. In this manner, the check valve 40 of this embodiment has a function of closing the upper end opening (inflow hole 24) of the slide cylindrical portion 21 when the upper lid 30 is removed from the cap body 20.

[Quantitative dispensing method using dispensing unit 100]
Next, a quantitative dispensing method using the dispensing unit 100 in this embodiment will be described with reference to FIGS. 7 to 12. First, in this embodiment, a case will be described in which a content C such as a fabric softener is stored in a flexible container (not shown), and the upper surface of the flange portion 15 of the dispensing unit 100 is welded to the flexible container. do.

In the initial state of the flexible container in which the contents C are stored or before use is started, the first locking projection 19 and the second locking projection 25 are engaged with each other. Therefore, first, the user releases the engagement between the cap body 20 and the spout barrel 10 by, for example, rotating the cap body 20 relative to the spout barrel 10 (step 1).

Next, as shown in FIGS. 8 and 9, the user grasps, for example, the hook portion 23a, pulls up the cap body 20 relative to the spout barrel 10, and starts measuring (step 2). At this time, as shown in FIG. 9, the top plate 22, the top plate 11 of the pouring cylinder 10, the skirt wall 23, and the slide cylinder part 21 form a measuring space CS in which the contents C can be stored.

Further, as shown in FIG. 9, when the cap body 20 is pulled up with respect to the spout barrel 10, the upper lid 30 is attached to the cap body 20, and the push-down protrusion 34 of the upper lid 30 is pressed against the valve part 4 of the check valve 40. is in a depressed state. Therefore, as is clear from the figure, when the valve part 41 of the check valve 40 is pressed down by the push-down protrusion 34, the slide cylinder part 21 and the check valve 40 are moved in the axial direction (Z direction) with respect to the main cylinder part 16. ), the contents C are sucked up into the slide cylindrical portion 21 by the negative pressure generated inside the slide cylindrical portion 21.

At this time, the spout 22a of the cap body 20 is closed by the plug 33 of the upper lid 30. Therefore, while the contents C are flowing into the metering space CS, the upper lid 30 is attached to the cap body 20, so that the spout 22a is maintained in a sealed state via the closure plug 33. .

Further, at this time, the inner surface of the skirt wall 23 of the cap body 20 is in close contact with the outer ring portion 12b of the pouring cylinder 10, and the outer surface of the slide cylindrical portion 21 is in close contact with the inner ring portion 16b. Thereby, while the contents C are flowing into the weighing space CS, the sealed state at the bottom of the weighing space CS is maintained.

Then, as shown in the enlarged view of the α section in FIG. 9, the contents C inside the flexible packaging container pass through the slide cylindrical portion 21 to reach the inflow hole 24, and further pass through the second flow hole 22c from the inflow hole 24. It is possible to reach the measurement space CS by doing so. Note that the number and size of the inflow holes 24 and the second flow holes 22c are related to the force required to pull up the cap body 20 with the upper lid 30 attached relative to the spout cylinder 10. Therefore, the number and size may be set depending on the balance between the force required for pulling up and the amount of liquid to be pulled up, the type of contents C, and the like.

In the following step 3, it is determined whether a predetermined amount of content C has been injected into the measuring chamber (measuring space CS). This amount of injection is proportional to the amount of lifting of the cap body 20 with respect to the dispensing tube 10, so by providing measuring scales on the peripheral wall 12, skirt wall 23, etc., the user can easily measure the amount properly. can be executed.

After the required amount of content C is injected into the measuring chamber (measuring space CS) in step 3, the upper lid 30 is opened to open the spout (step 4). That is, as shown in FIG. 10, the user hooks the hook part 36 with a finger and opens the top lid 30 with respect to the cap body 20 via the hinge joint part 35. By opening the upper lid 30 from the cap body 20 in this manner, the spout 22a of the cap body 20 is opened and connected to the atmosphere. At this time, since the push-down protrusion 34 of the upper lid 30 releases the push-down of the valve section 41, the valve section 41 is also pulled back to its original position by the action of the elastic support section 43.

At this time, as shown in FIG. 11, in response to the operation of opening the upper lid 30 from the cap body 20, the inflow hole 24 of the cap body 20 is closed by the valve portion 41 of the check valve 40. Therefore, even if the pouring unit 100 is tilted after this, the contents C will not leak out from the inflow hole 24 as long as the upper lid 30 is open.

Then, as shown in FIG. 12, the user tilts the flexible container in which a predetermined amount of the contents C is stored in the measuring space CS. Pour out a fixed amount of substance C (step 5). At this time, the inflow hole 24 is closed, so that erroneous discharge such as unintentional liquid return from the weighing space CS into the flexible container or additional inflow of contents C from the flexible container into the weighing space CS may occur. This prevents overexertion, such as overdoing.
In this embodiment, when the upper lid 30 is removed from the cap body 20 and the upper end opening (inflow hole 24) is closed by the check valve 40, the metering space CS is opened through the spout 22a of the cap body 20. The content C stored in the container will be poured out (a fixed amount will be discharged).

Through the above operations, a predetermined amount of content C is poured out, and the process ends.
After that, the following mode can be selected depending on, for example, whether the flexible container is to be restored. That is, when it is desired to restore the external shape of the flexible container to its original shape (to restore the shape of the container from the contracted state), the upper lid 30 is attached to the cap body 20 in the direction of the arrow in FIG. 10, and then The cap body 20 is pulled down relative to the spouting cylinder 10 in a direction opposite to the arrow in FIG. 8 .

By pushing the cap body 20 into the dispensing tube 10 with the upper lid 30 reattached to the cap body 20 in this manner, the air remaining in the metering space CS is returned to the inside of the flexible container. At this time, since there is no content C in the measuring space CS and there is air in it, this air flows into the inflow hole 24, passes through the flow path in the slide cylindrical part 21, and flows into the flexible container ( (The flow is in the opposite direction of the arrow shown in the enlarged view of the α section in FIG. 9).
This makes it possible to maintain the external shape of the flexible container even after dispensing a fixed amount, preventing unintentional tipping over due to the original external shape, and allowing the container storage space to continue to be used as is. .

On the other hand, if you want to keep the external shape of the soft package container in the contracted state when dispensing a fixed amount, instead of attaching the upper lid 30 to the cap body 20, move the cap body 20 in the direction of the arrow in FIG. A pulling operation is performed on the pouring cylinder 10. By pushing the cap body 20 into the spout tube 10 with the top lid 30 open without reattaching the top lid 30 to the cap body 20 in this way, the air remaining in the measuring space CS is released to the atmosphere from the spout 22a. It turns out.
As a result, the outer shape of the flexible container gradually shrinks after dispensing a fixed amount, so that the space for accommodating the container can be gradually reduced, and furthermore, it is also possible to significantly reduce the volume of the container at the time of disposal.

As described above, according to the dispensing unit 100 of the present embodiment and the quantitative dispensing method using the same, even if the content is dispensed in excess of the fixed amount, it is possible to return the content into the container through the inlet hole 24. Furthermore, even if the flexible container side is pressed by mistake when dispensing the contents after measurement, additional contents will not be discharged. This makes it possible to pour out a fixed amount from the flexible container while suppressing over-dispensing and erroneous dispensing of the contents, and furthermore, it is possible to suppress changes in the external shape of the container from volume reduction as necessary. Furthermore, since the volume of the flexible container can be intentionally reduced after dispensing a fixed amount, the storage space of the container can be gradually reduced as needed.

Each of the embodiments described above is a suitable example for carrying out the present invention, and a new container stopper may be constructed by appropriately modifying or combining each element of the embodiments without departing from the spirit of the present application. good.

INDUSTRIAL APPLICABILITY The present invention is suitable for providing a dispensing unit capable of dispensing a fixed amount in a flexible container while suppressing overdispensing and erroneous dispensing.

10: Pour cylinder 11: Top plate 12: Peripheral wall 13: Outer wall 14: Bottom part 15: Flange part 16: Main cylindrical part 17: Distribution hole 18: Engagement convex part 19: First locking protrusion 20: Cap body 21: Slide Cylindrical part 22: Top plate 23: Skirt wall 24: Inflow hole 25: Second locking protrusion 30: Upper lid 31: Upper plate 32: Circumferential wall 33: Blocking plug 34: Push-down protrusion 35: Hinge joint part 36: Hook part 40: Check valve 100: Pour unit

Claims (8)

a dispensing cylinder that is attached to the mouth of a flexible packaging container and has a main cylindrical part formed with a flow path through which the contents of the flexible packaging container can be poured;
A sliding cylindrical part inserted into the inside of the main cylindrical part, a top plate connected to an upper end of the sliding cylindrical part and having a spout formed therein, and a skirt wall hanging down from an outer edge of the top plate. a cap body;
an upper lid that can be attached to the cap body and has a plug that closes the spout;
a check valve disposed at the upper end of the sliding cylindrical portion and capable of closing the upper end opening of the sliding cylindrical portion;
A measuring space capable of storing the contents is formed by the top plate, the pouring cylinder, the skirt wall, and the sliding cylinder part,
The upper lid is formed with a push-down protrusion that, when attached to the cap body, pushes down the check valve and communicates the metering space with the inside of the slide cylindrical part,
With the check valve pressed down by the push-down protrusion, the sliding cylindrical part and the check valve slide relative to the main cylindrical part in the axial direction, so that the inside of the sliding cylindrical part A dispensing unit in which the content is sucked up into the sliding cylindrical part by the generated negative pressure. The spouting tube includes a top plate and a peripheral wall that hangs down from a peripheral edge of the top plate,
An outer ring portion is formed at the upper outer edge of the peripheral wall, the diameter of which increases upward in the axial direction and which can come into close contact with the inner surface of the skirt wall;
The main cylindrical part is disposed so as to hang downward from the top plate, and an inner ring part that can be brought into close contact with the slide cylindrical part is formed at the upper end part so as to extend upward,
The metering space according to claim 1, wherein the outer ring portion and the inner surface of the skirt wall are in close contact with each other, and the inner ring portion and the outer surface of the sliding cylindrical portion are in close contact with each other, so that the measurement space is kept sealed. pouring unit. The upper lid is hinged to the cap body via a hinge joint,
The spouting unit according to claim 1 or 2, wherein the sliding cylindrical portion is disposed between the hinge joint portion and the spout. The pouring unit according to any one of claims 1 to 3, wherein the check valve closes the upper end opening of the sliding cylindrical portion when the upper lid is detached from the cap body. Claim 4: When the upper lid is removed from the cap body and the upper end opening is closed by the check valve, the content stored in the metering space is poured out through the spout of the cap body. Dispensing unit described in. The air remaining in the measuring space is returned to the interior of the flexible packaging container by pushing the cap body into the dispensing tube with the top lid reattached to the cap body. The dispensing unit according to any one of the items. At least one flow hole through which the contents can pass is formed in the bottom of the main cylindrical part, and an engaging convex part that can be engaged with the inner wall of the slide cylindrical part is disposed. The pouring unit according to any one of 1 to 6. The spout unit according to any one of claims 1 to 7, wherein the spout tube is a spout that can be attached to the mouth of the flexible container.