JP7767210B2 - Spout for pouring - Google Patents

Description

The present invention relates to a dispensing spout.

Conventional dispensing spouts are desired to be able to stably dispense contents from a refill container into a packaging container (a container to be filled) with a simple operation. Patent Document 1 proposes a dispensing spout in which an outer sleeve having a tip opening is attached to an inner stopper, and which can be switched between a closed position in which the tip opening is closed and an open position in which the tip opening is open.

Japanese Patent Application Laid-Open No. 2021-62906

When a container with a dispensing spout attached is not in use, such as during storage or transportation, foreign matter such as dirt and dust may adhere to the dispensing spout.
If the contents remain in a container with a dispensing spout attached, the spout may be stored with the container attached. After the contents of a container with a dispensing spout attached have been used up, the spout may be discarded. In either case, the contents may adhere to the spout after being poured out.

Dirt, dust, or contents adhering to the dispensing spout may cause contamination if they come into contact with the human body or other objects. If the contents are liquids containing non-volatile components, dust may accumulate on the dispensing spout, causing discomfort to the user.

The present invention was made in consideration of the above circumstances, and aims to provide a dispensing spout that can stably dispense contents with simple operation and can be maintained in a clean state.

A first aspect of the present invention is a spout comprising an inner stopper attached to a tubular attachment portion of a container for accommodating contents, an outer sleeve movably fitted onto the inner stopper in the axial direction, and an overcap attached to the outer sleeve. The inner stopper has a tubular dispensing portion attached to the tubular attachment portion and a sealing protrusion provided on the tubular dispensing portion. The outer sleeve has a sleeve main body with a tip opening shaped according to the sealing protrusion, and a stopper protrusion protruding from the outer surface of the sleeve main body. The axial movement of the spout can switch between a closed position in which the sealing protrusion closes the tip opening and an open position in which the tip opening is open. In the open position, the sealing protrusion protrudes outside the outer sleeve from the tip opening, and the overcap can accommodate the sealing protrusion protruding from the tip opening. The overcap is attachable to the outer sleeve in both the closed and open positions.

A second aspect of the present invention is a pouring spout according to the first aspect, wherein the overcap has a tubular portion attached to the outer sleeve, a top portion covering the tip opening, and a spacer forming a space between the tip opening and the top portion capable of accommodating the sealing protrusion protruding from the tip opening.
A third aspect of the present invention is the second aspect, wherein the spacer is a spout for pouring that extends from the top portion toward the sleeve body.

A fourth aspect of the present invention is a spout according to any one of the first to third aspects, in which the outer sleeve further includes a restricting member that restricts axial movement relative to the inner plug, the overcap is attached to the sleeve body, and the restricting member is removably provided on the opposite side of the sleeve body via the stopper protrusion.

This invention allows for stable dispensing of contents with a simple operation. Furthermore, because the overcap can accommodate the sealing protrusion protruding from the tip opening, it can be attached to the outer sleeve in both the open and closed positions.

FIG. 2 is a perspective view showing an example of a spout base. FIG. 1 is a perspective view showing an example of an inner plug and an outer sleeve. FIG. 10 is a perspective view showing an example of an overcap. FIG. 2 is a vertical cross-sectional view showing an example of a dispensing spout in a closed state. FIG. 2 is a perspective view showing an example of a spout body in an open state. FIG. 2 is a vertical cross-sectional view showing an example of a spout body in an open state. FIG. 1 is a longitudinal cross-sectional view of the dispensing spout with the outer sleeve in an open position.

The present invention will now be described based on preferred embodiments with reference to the drawings.

Figure 1 shows an embodiment of the spout base, Figure 2 shows the inner plug and outer sleeve, Figure 3 shows the overcap, and Figure 4 shows the dispensing spout in a closed state. Figures 5 and 6 show the spout body in an open state. Figure 7 shows the spout body in an open state with the overcap attached.

As shown in Figure 2, the spout body 40 of this embodiment has at least an inner plug body 20 and an outer sleeve 30. The spout body 40 can perform the function of dispensing contents by being attached to the spout base 10 shown in Figure 1.

Furthermore, an overcap 50 shown in FIG. 3 can be attached to the spout body 40. At least the spout body 40 and the overcap 50 constitute the dispensing spout 100 shown in FIG. 4. The dispensing spout 100 may further include a spout base 10.

As shown in FIG. 1, the spout base 10 comprises an attachment portion 12 that is attached to a container (not shown) that contains the contents, and an attachment tube portion 11 that protrudes from the attachment portion 12. Hereinafter, the container that contains the contents may be referred to as the main container. The spout base 10 can be made from, for example, a molded synthetic resin product. The spout base 10 can be molded as a single unit, or it may be made by assembling two or more parts.

The main container may be, but is not limited to, a pouch container. A pouch container can be opened by splitting the gap between two sheets of film. Types of pouch containers may be, but are not limited to, stand-up pouches, three-sided sealed bags, four-sided sealed bags, gusseted bags, etc.

The pouch container may be made of, for example, a flexible film or sheet. The film or sheet may be made primarily of, for example, synthetic resin, paper, metal foil, or two or more of these materials.

The attachment portion 12 in the illustrated example has a boat shape that protrudes in two opposing directions from the center portion having the mounting tubular portion 11. The opening of the pouch container is welded around the attachment portion 12, with the opposing two directions aligned with the width direction of the pouch container. This reduces the difference in level between the area where the pouch container is welded without the attachment portion 12 and the area where the pouch container is welded with the attachment portion 12. Although not specifically shown, the attachment portion 12 may be circular, polygonal, etc.

The illustrated tubular attachment portion 11 has a cylindrical shape. The tip of the tubular attachment portion 11 has an outlet 11a for a flow path 17 (see Figure 4) that penetrates the attachment portion 12 and leads to the main container. The cross-sectional shape of the flow path 17 when viewed from the axial direction of the tubular attachment portion 11 is, for example, circular. Although not particularly limited, flange portions 15, 16 may be formed between the tubular attachment portion 11 and the attachment portion 12.

The contents of the main container are not particularly limited, but preferably have fluidity that allows them to be poured through the flow path 17, and examples include fluids made of tangible materials such as liquids, powders, and granules. Examples of liquid contents include liquid cosmetics, liquid detergents, liquid seasonings, and liquid medicines. Examples of powder or granular, i.e., solid, contents include salt, sugar, pepper, granular seasonings, and powdered detergent.

Although not specifically shown, the spout base 10 may be the neck of a rigid container such as a bottle. In this case, the attachment portion 12 of the spout base 10 may be omitted, and the mounting tube portion 11 and other components may be integrally molded into the body or shoulder of the main container.

A male thread 13 is formed on the outer periphery of the mounting tube 11, and is used to attach the inner plug 20. Furthermore, a locking portion 14 is formed on the side closer to the mounting portion 12 than the male thread 13. The locking portion 14 can be used to lock the restricting member 41, which will be described later.

As shown in FIG. 2, the inner plug 20 has a dispensing tubular portion 21 that is attached to the mounting tubular portion 11, and a sealing protrusion 24 provided on the dispensing tubular portion 21. In the illustrated example, the dispensing tubular portion 21 and sealing protrusion 24 are substantially cylindrical. Because there is no need to rotate the outer sleeve 30 circumferentially relative to the outer periphery of the inner plug 20, the outer shapes of the dispensing tubular portion 21 and sealing protrusion 24 may be non-circular, although this is not specifically shown.

The sealing protrusion 24 is formed with a smaller diameter than the dispensing tube portion 21. An annular top wall portion 22 is formed at the tip side of the dispensing tube portion 21. Between the top wall portion 22 and the sealing protrusion 24, a support portion 23 that supports the sealing protrusion 24 and an opening portion 25 that allows the contents to flow are formed at different positions in the circumferential direction.

As shown in Figure 4, the inner surface of the dispensing tubular portion 21 is formed with a female thread 28 that can be connected to the male thread 13 of the mounting tubular portion 11. The method of connecting the mounting tubular portion 11 and the dispensing tubular portion 21 is not limited to threads, and various methods can be used. Although not specifically shown, at least one of the outer surface of the mounting tubular portion 11 or the inner surface of the dispensing tubular portion 21 may be formed with irregularities that can be connected by axial displacement, fitting, engagement, etc.

A sealing tube portion 29 protrudes from the base end side of the top wall portion 22. The sealing tube portion 29 may be cylindrical, for example. The outer diameter of the sealing tube portion 29 is smaller than the inner diameter of the dispensing tube portion 21, so the outer surface of the sealing tube portion 29 is spaced apart from the inner surface of the dispensing tube portion 21. The tip of the attachment tube portion 11 is inserted between the dispensing tube portion 21 and the sealing tube portion 29.

The length by which the sealing tube portion 29 protrudes from the top wall portion 22 toward the base end may be shorter than the axial length of the dispensing tube portion 21. The outer peripheral surface of the sealing tube portion 29 contacts the inner peripheral surface of the attachment tube portion 11, and the base end surface of the top wall portion 22 contacts the tip surface of the attachment tube portion 11, so that the attachment tube portion 11 and the sealing tube portion 29 form an integrated wall surface with respect to the flow path 17. Contents flowing into the flow path 17 can reach the opening distal to the top wall portion 22.

The sealing protrusion 24 is disposed on the tip side of the dispensing tube portion 21 via the top wall portion 22 and the support portion 23. An intermediate wall portion 27 protrudes in a cantilevered manner from the base end side of the sealing protrusion 24. The length of the intermediate wall portion 27 along the axial direction of the flow path 17 may be approximately the same as the distance from the tip surface of the top wall portion 22 to the base end surface of the sealing protrusion 24, or may be shorter than that distance.

The inner plug 20 in the illustrated example has openings 25 at two locations around the circumferential direction of the sealing protrusion 24, and the intermediate wall 27 is positioned between these openings 25. This allows the contents traveling axially through the flow path 17 to collide with the intermediate wall 27 and change direction toward the opening 25. For example, if the axial direction of the flow path 17 is vertically downward, the contents that collide with the intermediate wall 27 can be guided evenly toward the two openings 25.

Although not specifically shown, the number of openings 25 formed around the circumferential direction of the sealing protrusion 24 is arbitrary. There may be one opening 25, or three or more openings 25. The intermediate wall portion 27 may be omitted, and the shape of the intermediate wall portion 27 may be changed depending on the position and number of openings 25.

The inner plug 20 has an annular liquid stop rib 26 on the outer surface of the tubular dispensing portion 21. The liquid stop rib 26 protrudes radially from the outer surface of the tubular dispensing portion 21. The liquid stop rib 26 comes into contact with the inner surface of the sleeve body 31, thereby preventing the contents from flowing into the gap between the outer surface of the tubular dispensing portion 21 and the inner surface of the sleeve body 31.

As shown in Figures 2 and 4, the outer sleeve 30 has a sleeve body 31 with a tip opening 33 shaped to correspond to the sealing protrusion 24, and a stopper protrusion 32 protruding from the outer peripheral surface of the sleeve body 31. The outer sleeve 30 is movable axially relative to the inner plug 20.

The tip opening 33 is located on the tip surface of the sleeve body 31. The tip opening 33 is closed by the engagement of the sealing protrusion 24. As shown in Figure 4, the position in which the sealing protrusion 24 closes the tip opening 33 is called the closed position. In the closed position, the tip surface of the sealing protrusion 24 may be flush with the tip of the sleeve body.

When the outer sleeve 30 moves toward the base end of the inner plug 20, the distal opening 33 is opened, as shown in Figures 5 and 6. The position in which the sealing protrusion 24 moves away from the distal opening 33, opening the distal opening 33, is called the open position. In the open position, the opening 25 of the inner plug 20 protrudes beyond the distal surface of the sleeve body 31, allowing the contents to flow out from the distal opening 33.

The outer sleeve 30 is fitted onto the inner plug 20. In the illustrated example, the entire dispensing tube portion 21 is housed within the outer sleeve 30, both in the closed position and the open position. Although not specifically illustrated, only a portion of the dispensing tube portion 21 may be housed within the outer sleeve 30.

In the illustrated example, the sleeve body 31 is cylindrical, and the tip opening 33 is circular. Because there is no need to rotate the outer sleeve 30 circumferentially relative to the outer periphery of the inner plug 20, the sleeve body 31 and tip opening 33 may be non-circular, although this is not specifically shown.

The sleeve body 31 in the illustrated example has a step 34 on its inner circumferential surface at a position away from the tip opening 33 toward the base end. As shown in FIG. 2, the diameter of the dispensing tube portion 21 is larger toward the base end than toward the tip end, and contact with the step 34 can restrict the open position. Although not specifically shown, the open position may also be restricted at a position where the top wall portion 22 contacts the periphery of the tip opening 33.

The stopper protrusion 32 protrudes radially from the outer peripheral surface of the sleeve body 31. The amount by which the stopper protrusion 32 protrudes radially from the outer peripheral surface of the sleeve body 31 varies depending on its circumferential position. The stopper protrusion 32 shown in Figure 2 has a pair of flange portions 32a, 32a and a pair of cutout portions 32b, 32b.

The amount by which the notch portion 32b protrudes radially from the sleeve body 31 is smaller than the amount by which the flange portion 32a protrudes radially from the sleeve body 31. Note that the notch portion 32b does not have to protrude radially from the sleeve body 31.

The outer sleeve 30 has a restricting member 41 on the base end side of the stopper protrusion 32. The restricting member 41 is positioned on the opposite side of the stopper protrusion 32 from the sleeve body 31. The restricting member 41 is removable from the outer sleeve 30.

As shown in Figure 4, the restricting member 41 restricts axial movement of the outer sleeve 30 relative to the inner plug 20. Specifically, the protrusion 43 protruding from the inner circumferential surface of the restricting member 41 contacts the locking portion 14 of the spout base 10, thereby restricting movement of the outer sleeve 30.

The restricting member 41 and the stopper projection 32 are connected, for example, via a plurality of breakable weakened portions 44. The weakened portions 44 are, for example, thin-walled portions, bridges, etc. By breaking these weakened portions 44, the restricting member 41 can be removed from the outer sleeve 30.

As shown in FIG. 2, the restricting member 41 is formed in a circumferentially extending band shape and has a grip portion 42 at its end. The grip portion 42 is located on one side of the notches 32b, 32b of the stopper projection 32. The weakened portion 44 can be broken by pinching and pulling the grip portion 42.

When the restricting member 41 is removed from the outer sleeve 30, the locking portion 14 is no longer in contact with the restricting member 41, allowing the outer sleeve 30 to move axially relative to the inner plug 20. The outer sleeve 30 can be switched between a closed position and an open position by moving in the axial direction. In addition to being able to switch from the closed position to the open position, it may also be possible to switch from the open position to the closed position, and it may even be possible to switch repeatedly.

The overcap 50 is attached to the outer sleeve 30. Not only can the overcap 50 be attached to the outer sleeve 30 in the closed position shown in Figure 4, but the overcap 50 can also be attached to the outer sleeve 30 with the spout body 40 in the open position shown in Figure 6. This results in a dispensing spout 100 with the overcap 50 attached while the outer sleeve 30 is in the open position, as shown in Figure 7.

The overcap 50 in the illustrated example can be attached to the sleeve body 31. Although not specifically shown, at least a portion of the overcap 50 may be attached to the stopper protrusion 32. The overcap 50 may be attached to at least a portion of the sleeve body 31 and at least a portion of the stopper protrusion 32.

As shown in FIG. 3, the overcap 50 has a cylindrical tube portion 51 and a top portion 52 that closes the upper end of the tube portion 51. The overcap 50 may further have a protrusion 53 at at least one location on the outer circumferential surface of the tube portion 51. The protrusion 53 may be used to prevent slipping when the overcap 50 is removed from the spout body 40.

The overcap 50 in the illustrated example has a recess 54 at the lower end of the tubular portion 51, and the lower end of the protrusion 53 reaches the recess 54. Although not specifically shown, the lower end of the protrusion 53 may also reach the lower end of the tubular portion 51.

In Figure 4, no gap is shown between the inner circumferential surface of the tubular portion 51 and the outer circumferential surface of the sleeve body 31, but a gap may be provided to prevent the two from coming into close contact. Furthermore, ribs (not shown) may protrude from the inner circumferential surface of the tubular portion 51 to locally contact the outer circumferential surface of the sleeve body 31 and enable engagement. If ribs are provided on the inner circumferential surface of the tubular portion 51, they may be arranged in one or more locations around the circumference, for example, two to four locations.

As shown in FIG. 7, when the outer sleeve 30 is in the open position, the sealing protrusion 24 protrudes from the tip opening 33 to the outside of the outer sleeve 30. The overcap 50 can accommodate the sealing protrusion 24 protruding from the tip opening 33.

The top 52 of the overcap 50 is positioned above the tip opening 33 and covers it. A spacer 55 extends from the inner surface of the top 52 toward the sleeve body 31. The spacer 55 forms a space between the tip opening 33 and the top 52 that can accommodate the sealing protrusion 24 protruding from the tip opening 33.

The spacer 55 in the illustrated example is cylindrical, but it may have any suitable shape as long as it does not interfere with the sealing protrusion 24. Although not specifically shown, the spacer 55 may be formed on the inner surface of the tubular portion 51, or may be formed between the inner surface of the tubular portion 51 and the inner surface of the top portion 52.

Next, we will explain how to assemble the spout 100.

To attach the spout body 40 shown in Figure 2 to the mounting tube portion 11 of the spout base 10 shown in Figure 1, simply couple the male thread portion 13 of the spout base 10 with the female thread portion 28 of the inner plug 20. For example, the outer sleeve 30 can be gripped and the spout body 40 can be rotated in a predetermined direction. Because the sealing protrusion 24 of the inner plug 20 is fitted into the tip opening 33 of the outer sleeve 30, the rotational force applied to the outer sleeve 30 is transmitted to the inner plug 20.

To attach the overcap 50 shown in Figure 3 to the spout body 40 shown in Figure 2, simply attach the tubular portion 51 to the sleeve body 31. This results in the dispensing spout 100 shown in Figure 4.

The process of joining the main container to the mounting portion 12 of the spout base 10 may be performed before or after the process of attaching the inner plug 20, outer sleeve 30, and overcap 50 to the mounting tubular portion 11 of the spout base 10. The dispensing spout 100 obtained by attaching the inner plug 20, outer sleeve 30, and overcap 50 to the mounting tubular portion 11 of the spout base 10 may be completed and then supplied to the main container manufacturing process.

Next, we will explain how to use the dispensing spout 100.

To use the dispensing spout 100 shown in Figure 4 to dispense the contents of a main container (not shown) attached to the spout base 10, the overcap 50 is removed from the spout main body 40. The user then grasps the gripping portion 42 of the restricting member 41 and breaks the weakened portion 44, thereby removing the restricting member 41 from the outer sleeve 30. At this time, the outer sleeve 30 is in the closed position.

The target container into which the contents of the main container are to be refilled is not specifically shown, but may be, for example, a bottle-shaped container made of synthetic resin. The target container may have, for example, a cylindrical container neck and a container body that contains the contents. A container shoulder may be present between the container neck and the container body.

The inner diameter of the container neck is larger than the outer diameter of the sleeve body 31. This allows at least a portion of the sleeve body 31 to be inserted into the container neck when refilling the contents of the main container. The spout body 40 may be in an inverted position. The inverted position is a position in which the tip opening 33 of the outer sleeve 30 faces vertically downward.

The inner diameter of the container neck is smaller than the major axis of the flange portion 32a of the stopper projection 32. This allows the tip surface of the flange portion 32a to contact the open end of the container neck. Furthermore, it is preferable that the inner diameter of the container neck is larger than the minor axis of the cutout portion 32b of the stopper projection 32. This creates a gap between the cutout portion 32b and the inner surface of the container neck that allows air to flow in when at least a portion of the sleeve body 31 is inserted inside the container neck.

When refilling the contents of the main container, the main container is held in an inverted position and the sleeve body 31 is inserted into the neck of the container to be filled, causing the tip surface of the flange portion 32a to contact the open end of the container neck. From this state, the spout base 10 and the inner plug 20 are pushed axially toward the tip of the container neck and outer sleeve 30, opening the spout body 40. Specifically, as shown in Figures 5 and 6, the sealing protrusion 24 moves away from the tip opening 33, and the outer sleeve 30 is placed in the open position.

When the tip opening 33 is opened, the contents of the main container pass through the flow path 17 in the spout base 10, through the opening 25 in the inner plug 20, and are released to the outside. The contents are divided into two by the intermediate wall 27 and flow into the container to be filled through the opening 25.

After the desired amount of contents has been poured into the container to be filled, the spout body 40 is removed from the container to be filled, and the main container is returned from the inverted position to its original position, completing the dispensing of the contents. If the amount of contents in the main container is within the capacity of the main container, the main container may be left in the inverted position until the dispensing of the contents is complete.

As shown in Figure 7, even when the outer sleeve 30 is in the open position and the sealing protrusion 24 protrudes outside the outer sleeve 30, the overcap 50 can accommodate the sealing protrusion 24. When disposing of the main container with the spout body 40 still attached, the overcap 50 can be left attached. This prevents leakage of contents remaining inside or adhering to the main container or spout body 40.

According to the spout 100 of this embodiment, the overcap 50 can be attached either before or after opening the spout body 40. This prevents dust and other contaminants from adhering to the outer surface of the spout body 40 before opening the main container. Furthermore, by attaching the overcap 50 to the spout body 40 after opening the main container, it is possible to prevent the overcap 50 from being lost from the main container.

By simply pressing the inner plug 20 down against the outer sleeve 30, the inner plug 20 and outer sleeve 30 move relative to each other in the axial direction, opening the tip opening 33 and transferring the contents of the main container into the target container.

The spout body 40 is designed so that the tip opening 33 does not open until the inner plug 20 and outer sleeve 30 move relative to each other, even when in an inverted position. This reduces the risk of spilling the contents before inserting the outer sleeve 30 into the container neck. Therefore, with a simple operation, the spout body 40 can stably dispense the contents from the main container into the container to be filled.

The dispensing spout 100 allows for the use of a general-purpose spout as the spout base 10, thereby reducing manufacturing costs. Because the inner plug 20 is housed in the outer sleeve 30, the axial dimension is reduced, allowing for the spout body 40 to be made more compact.

In the spout body 40 of this embodiment, the outer surface of the sleeve body 31 is a smoothly curved surface. Specifically, the outer surface of the sleeve body 31 is free of irregularities such as ribs or knurling. This prevents erroneous operations such as rotating the outer sleeve 30 when refilling the contents of the main container, and guides the stopper projection 32 into the container to be filled.

In the spout body 40 of this embodiment, even if an attempt is made to rotate the outer sleeve 30 around the outer periphery of the inner plug 20, the sealing protrusion 24 of the inner plug 20 is fitted into the tip opening 33 of the outer sleeve 30, making it difficult to rotate with a weak force.

Furthermore, because a strong force is required for the sealing projection 24 to fit into the tip opening 33, it may be difficult to close the cap by moving the outer sleeve 30 relative to the tip of the inner plug 20 after the contents have been poured into the container. Because the overcap 50 can be attached while the spout body 40 remains open, there is no need to return the spout body 40 to the closed state after pouring.

The present invention has been described above based on preferred embodiments, but the present invention is not limited to the above-described embodiments, and various modifications are possible without departing from the spirit of the present invention.

The components of the spout 100, namely the inner plug 20, outer sleeve 30, and overcap 50, can be made from molded synthetic resins, for example. The restricting member 41, which will be described later, can also be molded integrally with the outer sleeve 30. The components of the spout 100 may be made from the same type of synthetic resin (single material). Furthermore, the spout base 10 may be made from the same type of synthetic resin as the spout 100.

Synthetic resins are not particularly limited, but may include inexpensive, general-purpose plastics such as polyethylene, polypropylene, and polyolefin. Synthetic resins may also include bioplastics, biomass plastics, recycled plastics, and recycled plastics.

10...Spout base, 11...Mounting tube, 11a...Spout outlet, 12...Mounting portion, 13...Male thread portion, 14...Latching portion, 15, 16...Flange portion, 17...Flow path, 20...Inner plug, 21...Spouting tube portion, 22...Top wall portion, 23...Support portion, 24...Sealing protrusion, 25...Opening, 26...Liquid stopping rib, 27...Intermediate wall portion, 28...Female thread portion, 29...Sealing tube portion, 30...Outer sleeve , 31...sleeve body, 32...stopper protrusion, 32a...flange portion, 32b...notch portion, 33...tip opening, 34...step portion, 40...spout body, 41...regulating member, 42...gripping portion, 43...projection portion, 44...weakened portion, 50...overcap, 51...tubular portion, 52...top portion, 53...convex portion, 54...concave portion, 55...spacer, 100...pouring spout.

Claims (4)

an inner plug attached to a cylindrical attachment portion of a container in which contents are accommodated;
an outer sleeve fitted onto the inner plug so as to be axially movable;
an overcap attached to the outer sleeve;
the inner plug has a cylindrical pouring portion attached to the cylindrical mounting portion and a sealing protrusion provided on the cylindrical pouring portion,
the outer sleeve has a sleeve body having a tip opening shaped according to the sealing protrusion, and a stopper protrusion protruding from an outer peripheral surface of the sleeve body, and is switchable between a closed position in which the sealing protrusion closes the tip opening and an open position in which the tip opening is open by movement in the axial direction,
In the open position, the sealing protrusion protrudes from the tip opening to the outside of the outer sleeve, and the overcap can accommodate the sealing protrusion protruding from the tip opening;
The dispensing spout, wherein the overcap is attachable to the outer sleeve in the closed position and the open position. The spout of claim 1, wherein the overcap has a tubular portion attached to the outer sleeve, a top portion covering the tip opening, and a spacer forming a space between the tip opening and the top portion that can accommodate the sealing protrusion protruding from the tip opening. The spout of claim 2, wherein the spacer extends from the top toward the sleeve body. The outer sleeve further includes a restricting member that restricts axial movement of the outer sleeve relative to the inner plug.
the overcap is attached to the sleeve body;
The spout according to any one of claims 1 to 3, wherein the restricting member is removably provided on the opposite side of the sleeve body via the stopper projection.