JP2023147424A - Spout for pouring out - Google Patents

Abstract

To provide a spout for pouring out that can stably pour out contents by simple operation and can be kept clean.SOLUTION: The spout for pouring out is provided with an inner plug body 20 fitted to a fitting cylindrical part 11 of a container in which contents are stored, an outer sleeve 30 externally inserted into the inner plug body 20 movably in an axial direction, and an over cap 50 fitted to the outer sleeve 30. The inner plug body 20 has a pour-out cylindrical part 21 fitted to the fitting cylindrical part 11 and a sealing protruding part 24 provided in the pour-out cylindrical part 21. The outer sleeve 30 has a sleeve main body 31 having a tip opening part 33 in a shape according to the sealing protruding part 24, and a stopper protruding part 32 protruding from an outer peripheral surface of the sleeve main body 31. At an opening position of the tip opening part 33, the over cap 50 can store the sealing protruding part 24 protruding to the outside of the outer sleeve 30. At a closing position and the opening position of the tip opening part, the over cap 50 can be fitted to the outer sleeve 30.SELECTED DRAWING: Figure 7

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pouring spout.

With conventional pouring spouts, it has been desired to be able to stably pour out the contents from a refill container into a packaging container (container to be filled) by a simple operation. Patent Document 1 discloses a dispensing device in which an outer sleeve having a tip opening is attached to an inner stopper, and can be switched between a closed position where the tip opening is closed and an open position where the tip opening is opened. A spout is proposed.

JP2021-62906A

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

Dirt, dust, and contents adhering to the dispensing spout may cause stains if they come into contact with the human body or objects. If the content is a liquid containing non-volatile components, dust etc. may accumulate on the spout, which may cause discomfort to the user.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a spout that can stably pour out the contents with a simple operation and that can maintain cleanliness. .

A first aspect of the present invention includes: an inner stopper that is attached to a mounting cylinder portion of a container in which contents are stored; an outer sleeve that is movably inserted in the axial direction with respect to the inner stopper; an overcap attached to the outer sleeve, and the inner plug body includes a spouting tube section attached to the mounting tube section and a sealing protrusion provided on the spouting tube section. The outer sleeve has a sleeve main body having a distal end opening shaped according to the sealing protrusion, and a stopper protrusion protruding from the outer peripheral surface of the sleeve main body, and the outer sleeve has a stopper protrusion protruding from the outer peripheral surface of the sleeve main body, and the outer sleeve has a stopper protrusion protruding from an outer peripheral surface of the sleeve body, can switch between a closed position where the sealing protrusion closes the tip opening and an open position where the tip opening is opened, and in the open position, the sealing protrusion closes the tip opening. The overcap projects from the opening to the outside of the outer sleeve, and the overcap is capable of accommodating the sealing protrusion projecting from the tip opening, and in the closed position and the open position, the overcap is attached to the outer sleeve. This is a spout for dispensing that can be attached to.

In a second aspect of the present invention, in the first aspect, the overcap includes a cylindrical portion attached to the outer sleeve, a top portion covering the tip opening, and the sealing member protruding from the tip opening. The spout has a spacer that forms a space in which a protrusion can be accommodated between the tip opening and the top.
In a third aspect of the present invention, in the second aspect, the spacer is a spout extending from the top toward the sleeve body.

In a fourth aspect of the present invention, in any one of the first to third aspects, the outer sleeve further includes a restriction member that restricts movement in the axial direction with respect to the inner plug, and the overcap includes: The regulating member is a pouring spout that is attached to the sleeve main body and is removably provided on the opposite side of the sleeve main body via the stopper protrusion.

According to the present invention, the contents can be stably poured out with a simple operation. Moreover, since the sealing protrusion protruding from the tip opening can be accommodated, the overcap can be attached to the outer sleeve in the open position as well as in the closed position.

It is a perspective view showing an example of a spout base. It is a perspective view showing an example of an inner stopper and an outer sleeve. It is a perspective view showing an example of an overcap. It is a longitudinal cross-sectional view showing an example of a spout for pouring in a closed state. It is a perspective view showing an example of a spout body in an open state. It is a longitudinal cross-sectional view showing an example of a spout main body in an open state. FIG. 3 is a longitudinal cross-sectional view showing the spout with the outer sleeve in the open position.

Hereinafter, the present invention will be described based on preferred embodiments and with reference to the drawings.

FIG. 1 shows the spout base, FIG. 2 shows the inner stopper and outer sleeve, FIG. 3 shows the overcap, and FIG. 4 shows an embodiment of the dispensing spout in the closed state. 5 and 6 show the spout body in an open state. FIG. 7 shows a state in which an overcap is attached to the spout body in an open state.

The spout body 40 of the embodiment has at least an inner plug body 20 and an outer sleeve 30, as shown in FIG. The spout main body 40 can exhibit a content pouring function by being attached to the spout base 10 shown in FIG. 1.

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

As shown in FIG. 1, the spout base 10 includes an attachment part 12 that is attached to a container (not shown) in which contents are stored, and an attachment cylinder part 11 that protrudes from the attachment part 12. Hereinafter, the container in which the contents are stored may be referred to as the main container. The spout base 10 can be made of, for example, a molded article of synthetic resin. Although the spout base 10 can be integrally molded, it may also be constructed by assembling two or more parts.

Examples of the main container include, but are not limited to, pouch containers. The pouch container can be opened by opening between two films. Types of pouch containers include, but are not limited to, standing pouches, three-sided sealed bags, four-sided sealed bags, gusseted bags, and the like.

The pouch container may be constructed of a flexible film or sheet, for example. The film or sheet can be formed mainly from, for example, synthetic resin, paper, metal foil, or two or more of these.

The illustrated attachment portion 12 has a so-called boat shape that protrudes in two opposing directions with respect to the central portion that includes the attachment tube portion 11 . The opening of the pouch container is welded around the mounting portion 12 with the two opposing directions aligned with the width direction of the pouch container. As a result, it is possible to reduce the difference in level between the location where the pouch container is welded without the attachment portion 12 intervening and the location where the pouch container is welded with the attachment portion 12 interposed. Although not particularly illustrated, the mounting portion 12 may be circular, polygonal, or the like.

The mounting cylinder portion 11 in the illustrated example has a cylindrical shape. A spout 11a of a flow path 17 (see FIG. 4) that passes through the mounting portion 12 and communicates with the main container is opened at the distal end of the mounting cylinder portion 11. The cross-sectional shape of the flow path 17 viewed from the axial direction of the mounting cylinder portion 11 is, for example, circular. Although not particularly limited, flange portions 15 and 16 may be formed at the intermediate portion between the mounting cylinder portion 11 and the attachment portion 12.

Although the contents of the main body container are not particularly limited, it is preferable that the contents have fluidity such that they can be poured out through the channel 17, and examples thereof include fluids made of tangible substances such as liquids, powders, and granules. Examples of liquid contents include liquid cosmetics, liquid detergents, liquid seasonings, liquid medicines, and the like. Examples of the powder or granule, ie, solid contents, include salt, sugar, pepper, granular seasoning, and powdered detergent.

Although not particularly illustrated, the spout base 10 may be a container neck of a hard container such as a bottle container. In this case, the mounting portion 12 of the spout base 10 may be omitted, and the mounting cylinder portion 11 and the like may be integrally molded on the trunk or shoulder of the main container.

A male threaded portion 13 is formed on the outer periphery of the mounting cylinder portion 11 and is used for mounting with the inner plug body 20. Further, a locking portion 14 is formed closer to the mounting portion 12 than the male threaded portion 13 . A regulating member 41, which will be described later, can be locked to the locking portion 14.

As shown in FIG. 2, the inner stopper 20 includes a spouting cylinder part 21 that is mounted on the mounting cylinder part 11, and a sealing protrusion 24 provided on the spouting cylinder part 21. The spouting cylinder part 21 and the sealing protrusion 24 in the illustrated example have a substantially cylindrical shape. Since it is not necessary to rotate the outer sleeve 30 in the circumferential direction with respect to the outer periphery of the inner plug body 20, the outer shapes of the spouting cylinder part 21 and the sealing protrusion 24 may be non-circular, although not particularly shown.

The sealing protrusion 24 is formed to have a smaller diameter than the pouring cylinder part 21. An annular top wall portion 22 is formed on the distal end side of the spouting cylinder 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 25 through which the contents flow are formed at different positions in the circumferential direction.

As shown in FIG. 4, a female threaded portion 28 that can be connected to the male threaded portion 13 of the mounting barrel 11 is formed on the inner circumferential surface of the spouting barrel 21. The method of coupling the mounting cylinder part 11 and the pouring cylinder part 21 is not limited to screws, and various methods can be adopted. Although not particularly shown in the drawings, at least one of the outer circumferential surface of the mounting cylinder part 11 and the inner circumferential surface of the pouring cylinder part 21 may have projections and depressions that can be connected by displacement in the axial direction, fitting, engagement, or the like.

A sealing cylinder portion 29 projects from the base end side of the top wall portion 22 . The sealing tube portion 29 may have a cylindrical shape, for example. Since the outer diameter of the sealing cylinder part 29 is smaller than the inner diameter of the spouting cylinder part 21, the outer peripheral surface of the sealing cylinder part 29 is separated from the inner peripheral surface of the spouting cylinder part 21. The tip of the mounting cylinder 11 is inserted between the pouring cylinder 21 and the sealing cylinder 29 .

The length of the sealing cylinder part 29 protruding from the top wall part 22 toward the proximal end may be shorter than the length of the spouting cylinder part 21 in the axial direction. The outer peripheral surface of the sealing cylinder part 29 contacts the inner peripheral surface of the mounting cylinder part 11, and the base end surface of the top wall part 22 contacts the distal end surface of the mounting cylinder part 11, so that the sealing cylinder part 29 is installed in the flow path 17. The cylindrical portion 11 and the sealing cylindrical portion 29 form an integral wall surface. The contents flowing into the channel 17 can reach the opening at the tip end side of the top wall section 22 .

The sealing protrusion 24 is disposed from the top wall 22 to the distal end side of the spouting cylinder part 21 via the support part 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 equal to the distance from the distal end surface of the top wall portion 22 to the proximal end surface of the sealing protrusion 24, or may be shorter than the distance. Good too.

The illustrated inner plug body 20 has openings 25 at two locations in the circumferential direction of the sealing protrusion 24 , and the intermediate wall portion 27 is arranged between these openings 25 . Thereby, the contents traveling in the axial direction of the flow path 17 can collide with the intermediate wall portion 27 and change the traveling direction toward the opening 25 . For example, when the axial direction of the flow path 17 is vertically downward, the contents that have collided with the intermediate wall portion 27 can be equally guided toward the two openings 25 .

Although not particularly illustrated, the number of openings 25 formed in the circumferential direction of the sealing protrusion 24 is arbitrary. The number of openings 25 may be one, or three or more. 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 the openings 25.

The inner stopper 20 has an annular liquid stopper rib 26 on the outer circumferential surface of the spouting cylinder portion 21 . The liquid stopper rib 26 protrudes in the radial direction from the outer circumferential surface of the spouting cylinder portion 21 . By contacting the liquid stopper rib 26 with the inner circumferential surface of the sleeve body 31, it is possible to suppress the contents from flowing into the gap between the outer circumferential surface of the spouting cylinder part 21 and the inner circumferential surface of the sleeve body 31. .

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

The distal end opening 33 is opened at the distal end surface of the sleeve body 31. The tip opening 33 is closed by fitting the sealing protrusion 24 . As shown in FIG. 4, the position where the sealing protrusion 24 closes the tip opening 33 is referred to as the closed position. In the closed position, the distal end surface of the sealing protrusion 24 may be flush with the distal end of the sleeve body.

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

The outer sleeve 30 is fitted over the inner plug body 20. In the illustrated example, the entire spout barrel 21 is accommodated in the outer sleeve 30 in both the closed and open positions. Although not particularly illustrated, only a portion of the spouting cylinder portion 21 may be accommodated in the outer sleeve 30.

The sleeve body 31 in the illustrated example has a cylindrical shape, and the tip opening 33 has a circular shape. Since it is not necessary to rotate the outer sleeve 30 in the circumferential direction with respect to the outer periphery of the inner plug body 20, the sleeve body 31 and the tip opening 33 may be non-circular, although not particularly shown.

The illustrated sleeve main body 31 has a stepped portion 34 on the inner circumferential surface at a position away from the distal end opening 33 toward the proximal end. As shown in FIG. 2, the diameter of the pouring cylinder part 21 is larger on the proximal end side than on the distal end side, and the open position can be regulated by contacting with the stepped part 34. Although not particularly illustrated, the open position may 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 main body 31. The amount by which the stopper protrusion 32 protrudes radially from the outer peripheral surface of the sleeve main body 31 varies depending on the position in the circumferential direction. The stopper protrusion 32 shown in FIG. 2 has a pair of flange parts 32a, 32a and a pair of notch parts 32b, 32b.

The amount by which the notch portion 32b projects from the sleeve body 31 in the radial direction is smaller than the amount by which the flange portion 32a projects from the sleeve body 31 in the radial direction. Note that the cutout portion 32b does not need to protrude from the sleeve body 31 in the radial direction.

The outer sleeve 30 has a regulating member 41 on the base end side of the stopper protrusion 32 . The regulating member 41 is disposed on the opposite side of the sleeve body 31 with the stopper protrusion 32 interposed therebetween. The regulating member 41 is removable from the outer sleeve 30.

As shown in FIG. 4, the regulating member 41 regulates the movement of the outer sleeve 30 in the axial direction with respect to the inner plug body 20. Specifically, the protrusion 43 protruding from the inner peripheral surface of the regulating member 41 comes into contact with the locking part 14 of the spout base 10, thereby regulating the movement of the outer sleeve 30.

The regulating member 41 and the stopper protrusion 32 are connected, for example, via a plurality of breakable weakened parts 44 . The weakened portion 44 is, for example, a thin wall portion, a bridge, or the like. By breaking this weakened portion 44, the regulating member 41 is removed from the outer sleeve 30.

As shown in FIG. 2, the regulating member 41 is formed in a band shape that goes around in the circumferential direction, and has a grip portion 42 at an end thereof. The gripping part 42 is arranged on one side of the notches 32b, 32b of the stopper protrusion 32. By pinching and pulling the grip portion 42, the weakened portion 44 can be broken.

When the regulating member 41 is removed from the outer sleeve 30, the locking portion 14 does not come into contact with the regulating member 41, and the outer sleeve 30 becomes movable in the axial direction with respect to the inner plug body 20. The outer sleeve 30 can be switched between a closed position and an open position by axial movement. In addition to switching from the closed position to the open position, switching from the open position to the closed position may be possible, and even repeated switching may be possible.

Overcap 50 is attached to outer sleeve 30. Not only can the overcap 50 be attached to the outer sleeve 30 in the closed position shown in FIG. 4, but also the overcap 50 can be attached to the outer sleeve 30 relative to the spout body 40 in the open position shown in FIG. can. As a result, as shown in FIG. 7, a spout 100 is obtained in which the overcap 50 is attached while the outer sleeve 30 is in the open position.

The illustrated overcap 50 can be attached to the sleeve body 31. Although not particularly illustrated, 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. As shown in FIG. Further, the overcap 50 may have a convex portion 53 at at least one location on the outer peripheral surface of the cylindrical portion 51. The convex portion 53 may be used to prevent slipping when the overcap 50 is removed from the spout body 40.

The illustrated overcap 50 has a recess 54 at the lower end of the cylindrical portion 51, and the lower end of the convex portion 53 reaches the recess 54. Although not particularly illustrated, the lower end of the convex portion 53 may reach the lower end of the cylindrical portion 51.

Although FIG. 4 does not particularly show a gap between the inner circumferential surface of the cylindrical portion 51 and the outer circumferential surface of the sleeve body 31, a gap may be provided to prevent the two from coming into close contact with each other. Furthermore, a rib (not shown) may be projected from the inner circumferential surface of the cylindrical portion 51 to locally contact the outer circumferential surface of the sleeve body 31 to enable fitting. When ribs are provided on the inner circumferential surface of the cylindrical portion 51, they may be provided at one or more locations in the circumferential direction, for example, at two to four locations.

As shown in FIG. 7, when the outer sleeve 30 is in the open position, the sealing protrusion 24 projects 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 portion 52 of the overcap 50 is disposed above the tip opening 33 and covers the tip opening 33. A spacer 55 extends from the top 52 toward the sleeve body 31 on the inner surface of the top 52 . The spacer 55 forms a space between the tip opening 33 and the top 52 in which the sealing protrusion 24 protruding from the tip opening 33 can be accommodated.

Although the illustrated spacer 55 has a cylindrical shape, it may have any suitable shape that does not interfere with the sealing protrusion 24 . Although not particularly illustrated, the spacer 55 may be formed on the inner circumferential surface of the cylindrical portion 51 or between the inner circumferential surface of the cylindrical portion 51 and the inner surface of the top portion 52.

Next, a method of assembling the pouring spout 100 will be explained.

In order to attach the spout main body 40 shown in FIG. 2 to the mounting cylinder part 11 of the spout base 10 shown in FIG. good. For example, the spout body 40 may be rotated in a predetermined direction by gripping the outer sleeve 30. Since the sealing protrusion 24 of the inner plug body 20 fits 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 body 20.

In order to attach the overcap 50 shown in FIG. 3 to the spout body 40 shown in FIG. 2, the cylindrical portion 51 may be attached to the sleeve body 31. As a result, a pouring spout 100 shown in FIG. 4 is obtained.

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

Next, a method of using the pouring spout 100 will be explained.

To dispense the contents of a main body container (not shown) attached to the spout base 10 using the dispensing spout 100 shown in FIG. 4, the overcap 50 is removed from the spout main body 40. Furthermore, the user can remove the regulating member 41 from the outer sleeve 30 by grasping the gripping portion 42 of the regulating member 41 and breaking the weakened portion 44 . At this time, the outer sleeve 30 is in the closed position.

Although not particularly illustrated, the container to be filled with the contents of the main container to be refilled may be, for example, a bottle-shaped container made of synthetic resin. The container to be filled may have, for example, a cylindrical container neck and a container body that accommodates the contents. A container shoulder may be provided 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. Thereby, when refilling the contents of the main container, at least a portion of the sleeve main body 31 is inserted into the inside of the container neck. The spout body 40 may be in an inverted position. The inverted posture is a posture in which the distal end opening 33 of the outer sleeve 30 faces downward in the vertical direction.

The inner diameter of the container neck is smaller than the major axis of the flange 32a of the stopper protrusion 32. As a result, the front end side surface of the flange portion 32a comes into contact with the open end of the container neck. Furthermore, it is preferable that the inner diameter of the container neck is larger than the short diameter of the notch 32b of the stopper protrusion 32. As a result, when at least a portion of the sleeve body 31 is inserted into the container neck, a gap is formed between the notch 32b and the inner circumferential surface of the container neck to allow air to flow therein.

When refilling the contents of the main container with the main container in an inverted position and inserting the sleeve main body 31 into the container neck of the container to be filled, the tip surface of the flange portion 32a comes into contact with the open end of the container neck. From this state, the spout body 40 is opened by pushing the inner stopper 20 together with the spout base 10 toward the distal end side in the axial direction with respect to the container neck and the outer sleeve 30. Specifically, as shown in FIGS. 5 and 6, the sealing protrusion 24 is separated from the distal 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 channel 17 of the spout base 10, the opening 25 of the inner stopper 20, and are discharged 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 a desired amount of content has been poured into the container to be filled, the spout main body 40 is extracted from the container to be filled and the main container is returned from the inverted position to its original position, thereby completing the pouring of the contents. If the amount of the contents of the main container is within the capacity of the main container, the main container may be kept in an inverted position until the contents are poured out.

As shown in FIG. 7, the overcap 50 can accommodate the sealing protrusion 24 even when the outer sleeve 30 is in the open position and the sealing protrusion 24 protrudes outside the outer sleeve 30. When the main body container is disposed of with the spout main body 40 attached, the overcap 50 can be attached. Thereby, leakage of contents remaining or attached inside the main body container, spout main body 40, etc. can be suppressed.

According to the spout 100 of the embodiment, the overcap 50 can be attached before or after the spout body 40 is opened. Thereby, before the main body container is opened, it is possible to suppress dirt such as dust from adhering to the outer surface of the spout main body 40. Further, 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 pushing down the inner stopper 20 with respect to the outer sleeve 30, the inner stopper 20 and the outer sleeve 30 move relative to each other in the axial direction, opening the tip opening 33, and filling the main container with the contents. Can be refilled into containers.

The spout body 40 has a structure in which the tip opening 33 does not open even when the spout body 40 is in an inverted position until the inner plug body 20 and the outer sleeve 30 move relative to each other. Therefore, there is less risk of spilling the contents before inserting the outer sleeve 30 into the container neck. Therefore, the spout body 40 can stably pour out the contents from the main body container to the container to be filled by a simple operation.

In the pouring spout 100, a general-purpose spout can be used as the spout base 10. Therefore, manufacturing costs can be reduced. Since the inner plug body 20 is housed in the outer sleeve 30, the axial dimension can be reduced, and the spout body 40 can be made smaller.

In the spout body 40 of the embodiment, the outer peripheral surface of the sleeve body 31 is a smooth curved surface. Specifically, the outer circumferential surface of the sleeve main body 31 is not provided with any unevenness such as ribs or knurling. Thereby, when refilling the contents of the main container, erroneous operations such as rotating the outer sleeve 30 can be suppressed, and the stopper protrusion 32 can be guided to the operation of pushing toward the container to be filled.

In addition, in the spout body 40 of the embodiment, even if the outer sleeve 30 is rotated around the outer circumference of the inner plug body 20, the sealing protrusion 24 of the inner plug body 20 fits into the tip opening 33 of the outer sleeve 30. This makes it difficult to rotate with weak force.

In addition, since a strong force is required for the sealing protrusion 24 to fit into the tip opening 33, after the contents have been poured into the container to be filled, the outer sleeve 30 is attached to the tip side of the inner stopper 20. The method of relative movement may make it difficult to close. Since the overcap 50 can be attached while the spout body 40 is in the open state, there is no need to return the spout body 40 to the closed state after pouring.

Although the present invention has been described above based on the preferred embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

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

The synthetic resin is not particularly limited, but may be an inexpensive and general-purpose plastic such as polyethylene, polypropylene, or polyolefin. The synthetic resin may include bioplastic, biomass plastic, recycled plastic, recycled plastic, and the like.

DESCRIPTION OF SYMBOLS 10... Spout base, 11... Mounting cylinder part, 11a... Outlet, 12... Mounting part, 13... Male thread part, 14... Locking part, 15, 16... Flange part, 17... Channel, 20... Inner plug body, DESCRIPTION OF SYMBOLS 21... Spout cylinder part, 22... Top wall part, 23... Support part, 24... Sealing protrusion, 25... Opening part, 26... Liquid stopper rib, 27... Intermediate wall part, 28... Female thread part, 29... Seal Stop tube portion, 30...Outer sleeve, 31...Sleeve body, 32...Stopper protrusion, 32a...Flange part, 32b...Notch part, 33...Tip opening, 34...Step part, 40...Spout body, 41...Regulation Member, 42...Grip part, 43...Protrusion part, 44...Weakened part, 50...Overcap, 51...Cylinder part, 52...Top part, 53...Convex part, 54...Concave part, 55...Spacer, 100...Spout spout .

Claims (4)

an inner stopper that is attached to the attachment tube of the container in which the contents are accommodated;
an outer sleeve movably inserted in the axial direction with respect to the inner plug;
an overcap attached to the outer sleeve;
The inner plug body has a spouting cylinder part attached to the mounting cylinder part, and a sealing protrusion provided on the spouting cylinder part,
The outer sleeve includes a sleeve main body having a tip opening shaped according to the sealing protrusion, and a stopper protrusion protruding from the outer peripheral surface of the sleeve main body, and the outer sleeve has a stopper protrusion protruding from the outer circumferential surface of the sleeve main body. It is possible to switch between a closed position in which the sealing protrusion closes the tip opening and an open position in which the tip opening is opened;
In the open position, the sealing protrusion protrudes from the distal opening to the outside of the outer sleeve, and the overcap is capable of accommodating the sealing protrusion protruding from the distal opening;
A dispensing spout, wherein the overcap is attachable to the outer sleeve in the closed position and the open position. The overcap accommodates a cylindrical portion attached to the outer sleeve, a top portion that covers the tip opening, and the sealing protrusion protruding from the tip opening between the tip opening and the top. A spout according to claim 1, further comprising a spacer forming a possible space. The spout according to claim 2, wherein the spacer extends from the top toward the sleeve body. The outer sleeve further includes a regulating member that regulates movement in the axial direction with respect to the inner plug body,
the overcap is attached to the sleeve body,
The spout according to any one of claims 1 to 3, wherein the regulating member is removably provided on a side opposite to the sleeve main body via the stopper protrusion.

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