JP7198106B2 - Spouting member insertion structure - Google Patents

Description

The present invention relates to a pouring member inserting structure.

For example, an ink container filled with ink is connected to the printing device. The ink container comprises a spout member having an insert. The printing device includes an insertion receiving portion having an insertion hole. The insertion portion of the dispensing member is connected to the printing device by being inserted into the insertion hole of the inserted portion. Thereby, the ink in the ink container can be supplied to the printing device. As a connection structure including an insertion portion and an insertion portion to be inserted therein, there is a connection member described in Patent Document 1.

Japanese translation of PCT publication No. 2001-511416

When the pouring member is connected to a device to which it is connected, the contents may leak out. Therefore, it is required to suppress leakage of the contents during connection work.

One aspect of the present invention provides a pouring member inserting structure capable of suppressing leakage of contents during the operation of connecting the pouring member to a connection destination.

One aspect of the present invention includes a pouring member attached to an opening of a container and having a cylindrical insertion portion, a valve body provided in the insertion portion so as to be axially movable, and a cross section into which the insertion portion is inserted. and an inserted portion having a circular insertion hole, wherein the valve body moves toward the container side or the inserted portion side with respect to the insertion portion, thereby opening the flow path of the pouring member and allowing the insertion portion to open. Provided is a pouring member insertion structure, wherein a first spiral engaging portion that engages with each other and enables relative movement in a spiral direction is formed on the inner peripheral surface of the valve body and the outer peripheral surface of the valve body. .

In the pouring member insertion structure, the inserted portion is formed with an engaging portion that engages with the valve body inside the inserting portion so as not to rotate relative to each other when the pouring member is inserted into the insertion hole. can be adopted.

In the pouring member insertion structure, the inner peripheral surface of the insertion hole and the outer peripheral surface of the insertion portion are formed with second spiral engaging portions that engage with each other and enable relative movement in the spiral direction. , the spiral angle of the second spiral engaging portion may be equal to the spiral angle of the first spiral engaging portion.

The first spiral engagement portion formed on the inner peripheral surface of the insertion portion is one of a projection and a groove, and the first spiral engagement portion formed on the outer peripheral surface of the valve body comprises: The other of the protrusion and the groove is preferred.

The pouring member further includes a base mounted in the opening of the container, the insertion part is formed to protrude from the base, and the base and the insertion part are separate and coupled to each other. may be

Another aspect of the present invention provides a packaging container comprising the pouring member of the pouring member insertion structure and the container.
A packaging structure having the pouring member insertion structure is provided.

ADVANTAGE OF THE INVENTION According to one aspect of the present invention, it is possible to suppress the leakage of contents in the work of connecting the pouring member to the connection destination.

1 is a perspective view of an embodiment pouring member device; FIG. 1 is a perspective view of a pouring member of the pouring member insertion structure of the embodiment; FIG. It is a partial side view of the pouring member of the pouring member insertion structure of the embodiment. FIG. 4 is a side view of a portion of the pouring member of the pouring member insertion structure of the embodiment, viewed from the side opposite to the previous figure. 4 is a perspective view of the valve body of the pouring member insertion structure of the embodiment; FIG. It is the perspective view which looked at the valve body of the pouring member insertion structure of embodiment from the opposite side to the previous figure. 1 is a cross-sectional view of a pouring member insertion structure of an embodiment; FIG. FIG. 4 is a cross-sectional view explaining the operation of the pouring member insertion structure of the embodiment; FIG. 4 is a cross-sectional view explaining the operation of the pouring member insertion structure of the embodiment; FIG. 4 is a cross-sectional view explaining the operation of the pouring member insertion structure of the embodiment;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in each drawing used for the following description, the scale of each member may be appropriately changed in order to make each member recognizable.

[Spouting member insertion structure]
FIG. 1 is a perspective view of a pouring member device 100 of an embodiment. FIG. 2 is a perspective view of the pouring member 10. FIG. 3 is a side view of a portion of dispensing member 10. FIG. FIG. 4 is a side view of part of the pouring member 10 viewed from the side opposite to FIG. FIG. 5 is a perspective view of the valve body 20. FIG. FIG. 6 is a perspective view of the valve body 20 viewed from the side opposite to FIG. FIG. 7 is a cross-sectional view of the pouring member insertion structure 10A.
In the following description, the vertical positional relationship is tentatively determined according to FIG. That is, the upward direction in FIG. 7 is called upward, and the downward direction is called downward. The positional relationship defined here does not limit the posture during use of the pouring member insertion structure 10A.

As shown in FIG. 1 , the pouring member device 100 comprises a pouring member 10 and a receiver 30 .
The receiving portion 30 includes the inserted portion 5 , the first inner cylindrical portion 2 , and the bottom plate portion 4 .

A pouring member insertion structure 10A of the embodiment has a pouring member 10 and an inserted portion 5 .
As shown in FIGS. 1 and 6, the bottom plate portion 4 is generally formed in a rectangular shape.
As shown in FIG. 7 , the inserted portion 5 protrudes upward from one surface (upper surface) of the bottom plate portion 4 . As shown in FIG. 6, the inserted portion 5 includes a first end wall 1a, a first side wall 1c, and a second side wall 1d. The first end wall 1a is formed at a first edge 4a of the rectangular bottom plate portion 4. As shown in FIG. The first side wall 1c is formed in a portion including the first side edge 4c of the bottom plate portion 4. As shown in FIG. The second side wall 1 d is formed in a portion including the second side edge 4 d of the bottom plate portion 4 .

As shown in FIG. 6, a first intermediate protrusion 1e is formed on the inner surface of the first side wall 1c. The first intermediate protrusion 1e is formed to protrude in a direction approaching the second side wall 1d. As shown in FIG. 1, a second intermediate protrusion 1f is formed on the inner surface of the second side wall 1d. The second intermediate convex portion 1f is formed so as to protrude in a direction approaching the first side wall 1c.

The internal space of the inserted portion 5 is an insertion hole 5a. The insertion hole 5a is a space surrounded by the first end wall 1a, the first side wall 1c, the second side wall 1d, and the intermediate protrusions 1e and 1f. The insertion hole 5a has an arcuate cross-section perpendicular to the central axis direction.

As shown in FIG. 7, a first key projection 41 and a second key projection 42 are formed on the inner peripheral surface 5b of the insertion hole 5a. The first key projection 41 and the second key projection 42 are, for example, hemispherical projections. The first key projection 41 and the second key projection 42 protrude from the inner peripheral surface 5b in a direction approaching the central axis of the first insertion hole 5a. The first key projection 41 and the second key projection 42 are formed, for example, at positions shifted about 180° in the axial direction with respect to the central axis of the first insertion hole 5a. That is, the inter-projection angle α1 (see FIG. 1) between the first key projection 41 and the second key projection 42 is about 180°.
The first key projection 41 and the second key projection 42 are "second spiral engaging portions" formed on the inner peripheral surface 5b of the insertion hole 5a.

As shown in FIGS. 6 and 7, the upper end of the first inner cylinder portion 2 is provided with a pair of plate-like engaging portions 7,7. The engaging portion 7 protrudes upward along the axial direction from the upper end of the inserted portion 5 . The engaging portion 7 has a plate shape in which a cross section perpendicular to the central axis of the first insertion hole 5a has an arc shape around the central axis. The engaging portions 7, 7 can restrict the displacement of the valve body 20 in the direction around the central axis C1 when the tip portions are engaged with the engagement receiving portions 24, 24. As shown in FIG.

As shown in FIG. 7, the pouring member 10 is attached to the opening 35a of the container body 35 of the container 34. As shown in FIG. The extraction member 10 has a base portion 11 and an insertion portion 12 . As shown in FIG. 1, the base 11 may be, for example, disc-shaped or may be so-called boat-shaped. As shown in FIG. 7, the base 11 is attached to the opening 35a of the container body 35. As shown in FIG.
The base portion 11 and the insertion portion 12 are integrally formed. The base portion 11 and the insertion portion 12 can be produced by integral molding.

The insertion portion 12 is generally cylindrical. The insertion portion 12 protrudes downward in FIG. 7 from the first surface 11a (lower surface in FIG. 7) of the base portion 11 . C1 is the central axis of the pouring member 10, that is, the central axis of the insertion portion 12 and the flow paths 13 and 14 (see FIG. 1).
As shown in FIG. 1, a flow path 13 is formed in the base 11 along the Z direction. The internal space of the insertion portion 12 becomes the flow path 14 . The channel 14 has a smaller inner diameter than the channel 13 . Therefore, as shown in FIG. 7, a stepped portion 15 is formed at the boundary between the flow paths 13 and 14 due to the difference in the inner diameters of the flow paths 13 and 14 . The flow paths 13 and 14 allow the contents of the container body 35 (see FIG. 5) to be poured out from the tip opening of the insertion portion 12 to the outside.

As shown in FIGS. 2 to 4, a first key groove 43 and a second key groove 44 are formed on the outer peripheral surface of the insertion portion 12. As shown in FIGS. The first keyway 43 and the second keyway 44 are, for example, grooves having a semicircular cross section perpendicular to the length direction.

As shown in FIG. 3 , the first key groove 43 has a first main groove 45 and a first bent groove 47 . The first keyway 43 fits into the first key projection 41 (see FIGS. 1 and 7). The first key groove 43 (specifically, the first bending groove 47) and the first key projection 41 are engaged with each other to allow relative movement in the spiral direction.

As shown in FIG. 4, the second keyway 44 has a second main groove 46 and a second bent groove 48 . The second keyway 44 fits into the second key projection 42 (see FIGS. 1 and 7). The second key groove 44 (specifically, the second bent groove 48) and the second key projection 42 engage with each other to allow relative movement in the spiral direction.

The helical angles of the key grooves 43 and 44 (specifically, the bent grooves 47 and 48) are equal to the helical angles of the key grooves 53 and . The key grooves 43 and 44 (specifically, the bent grooves 47 and bent grooves 48) are "second spiral engaging portions" formed on the outer peripheral surface of the insertion portion 12. As shown in FIG.

As shown in FIGS. 3 and 4, the first main groove 45 and the second main groove 46 extend from the distal end 12a of the insertion portion 12 in a direction toward the base portion 11 along the central axis C1. The first bent groove 47 and the second bent groove 48 extend in bent directions from the ends 45a and 46a of the first main groove 45 and the second main groove 46, respectively. The first refraction groove 47 and the second refraction groove 48 are helical around the central axis C1.

The first bent groove 47 and the second bent groove 48 are inclined with respect to the central axis C1 in a direction toward the base portion 11 starting from the ends 45a and 46a of the first main groove 45 and the second main groove 46. Extend. The inclination directions of the first refraction grooves 47 and the second refraction grooves 48 are the same. The first bending groove 47 and the second bending groove 48 are formed, for example, in a range of 10° to 180° around the central axis C1. If this angle is 120° or less, there will be less twisting during connection, making the work easier.

As shown in FIG. 2, the first keyway 43 and the second keyway 44 are formed at positions shifted by about 180° around the central axis C1. That is, the angle β1 around the central axis C1 between the deepest portion of the first keyway 43 and the deepest portion of the second keyway 44 (inter-groove angle β1) is about 180°. The inter-groove angle β1 is equal to the inter-protrusion angle α1 between the first key projection 41 and the second key projection 42 (see FIG. 1). The groove-to-groove angle β1 is not limited to 180°, and may be any angle.

A first key projection 51 and a second key projection 52 are formed on the inner peripheral surface of the insertion portion 12 . The first key projection 51 and the second key projection 52 are, for example, hemispherical projections. The first key projection 51 and the second key projection 52 protrude from the inner peripheral surface of the insertion portion 12 in a direction toward the central axis C1. The first key projection 51 and the second key projection 52 are formed, for example, at positions shifted about 180° in the axial direction with respect to the central axis C1. The inter-projection angle α2 between the first key projection 51 and the second key projection 52 is about 180°.
The first key projection 51 and the second key projection 52 are the “first spiral engaging portion” formed on the inner peripheral surface of the insertion portion 12 . The inter-projection angle α2 is not limited to 180°, and may be any angle.

As shown in FIG. 7, the valve body 20 is provided inside the insertion portion 12 so as to be movable in a direction (axial direction) along the central axis C1.
As shown in FIGS. 5 and 6, the valve body 20 includes a closing plate 21, a cylindrical portion 22, and a plurality of connecting portions 23. As shown in FIGS.
The closing plate 21 is formed in a disc shape. The closing plate 21 is perpendicular to the central axis C1. As shown in FIG. 7, the outer diameter of the closing plate 21 is smaller than the inner diameter of the channel 13 and larger than the inner diameter of the channel 14 . Therefore, the closing plate 21 can be locked to the step portion 15 to close the flow paths 13 and 14 .

As shown in FIGS. 5 and 6, the tubular portion 22 has a cylindrical shape. A first key groove 53 and a second key groove 54 are formed on the outer peripheral surface of the tubular portion 22 . The first key groove 53 and the second key groove 54 are helical around the central axis C1. The first keyway 53 and the second keyway 54 extend in a direction toward the closing plate 21 while being inclined with respect to the central axis C1.

The first key groove 53 fits into the first key projection 51 . The first key groove 53 and the first key projection 51 engage with each other to allow relative movement in the spiral direction. The second key groove 54 fits into the second key projection 52 . The second key groove 54 and the second key projection 52 engage with each other to allow relative movement in the spiral direction.
The first key groove 53 and the second key groove 54 are "first spiral engaging portions" formed on the outer peripheral surface of the valve body 20 .

The cylindrical portion 22 is spaced apart from the closing plate 21 in the axial direction.
The connecting portion 23 has a columnar shape along the axial direction, and connects the closing plate 21 and the cylindrical portion 22 . The plurality of connecting portions 23 are formed at intervals in the direction around the central axis C1. Therefore, when the closing plate 21 moves upward (in the direction toward the container 34) from the stepped portion 15 (see FIG. 10), the gap between the closing plate 21 and the cylindrical portion 22 passes through the flow path 13 and the flow path 14. Fluid flow becomes possible.

As shown in FIGS. 6 and 7, recessed engagement receiving portions 24, 24 that engage with the distal end portions of the engaging portions 7, 7 of the inserted portion 5 are formed on the outer peripheral surface of the lower portion of the cylindrical portion 22. It is The engagement receiving portion 24 is formed with the depth direction directed upward (in the direction approaching the closing plate 21). When the tip portion of the engaging portion 7 is fitted into the engaging receiving portion 24, the displacement of the valve body 20 in the direction around the central axis C1 is restricted. The pair of engagement receiving portions 24, 24 are formed at positions shifted by about 180° around the central axis C1.

[Method of using pouring member insertion structure]
Next, how to use the pouring member insertion structure 10A will be described. First, the operation of inserting the insertion portion 12 of the extraction member 10 into the insertion hole 5a will be described.
As shown in FIG. 7, the closing plate 21 of the valve body 20 contacts the stepped portion 15 to close the flow paths 13 and 14. As shown in FIG. Therefore, the contents of the container 34 are prevented from spilling out.

As shown in FIG. 8, the insertion portion 12 of the pouring member 10 is aligned with the insertion hole 5a of the inserted portion 5. As shown in FIG. At that time, the positions of the first key groove 43 and the second key groove 44 (see FIG. 2) are aligned with the positions of the first key projection 41 and the second key projection 42, respectively. The central axis C1 of the extraction member 10 is aligned with the central axis of the insertion hole 5a.

As the insertion portion 12 is inserted into the insertion hole 5a, the first key projection 41 and the second key projection 42 are inserted into the first main groove 45 and the second main groove 46 of the first key groove 43 and the second key groove 44, respectively. enter the

When the inserting portion 12 is moved in the inserting direction with respect to the inserted portion 5, the first key projection 41 and the second key projection 42 advance in the first main groove 45 and the second main groove 46, respectively, and reach the ends 45a and 45a. 46a (see FIGS. 3 and 4).
When the insertion portion 12 is displaced in the spiral direction around the central axis C1, the first key projection 41 and the second key projection 42 enter the first bending groove 47 and the second bending groove 48, respectively. As a result, the insertion portion 12 is rotated and displaced in the insertion direction (downward in FIG. 8).

As shown in FIGS. 9 and 10, when the distal ends of the engaging portions 7 and 7 are fitted into the engaging receiving portions 24 and 24, the displacement of the valve body 20 in the direction around the central axis C1 is restricted. The helical displacement of the portion 12 is unhindered. At this time, the key projections 51 and 52 of the insertion portion 12 advance through the key grooves 53 and 54 (see FIGS. 5 and 6).

Since the insertion portion 12 is displaced in the insertion direction (downward in FIGS. 9 and 10) while the valve body 20 maintains its height position, the closing plate 21 is separated from the stepped portion 15 . Therefore, the contents of the container 34 flow from the flow path 13 into the flow path 14 through the gap between the closing plate 21 and the cylindrical portion 22 . The contents of the container 34 are supplied to a storage container (not shown) through the insertion portion 5 through the channel 14 .
When the first key projection 41 and the second key projection 42 reach the ends of the first bending groove 47 and the second bending groove 48, respectively, the insertion of the insertion portion 12 into the insertion hole 5a is completed.

Next, an operation for pulling out the insertion portion 12 of the extraction member 10 from the insertion hole 5a will be described.
As shown in FIG. 9, the insertion portion 12 is rotated in the direction opposite to the insertion direction and displaced in the withdrawal direction (upward in FIG. 9). During this process, key projections 41 and 42 are advanced in bent grooves 47 and 48 and key projections 51 and 52 are advanced in key grooves 53 and 54 . As shown in FIG. 8, the steps 15 reach the closing plate 21 as the insertion portion 12 rises, so that the flow paths 13 and 14 are closed.

When the engagement portions 7 and 7 are disengaged from the engagement receiving portions 24 and 24 , the restriction on the rotation of the valve body 20 is released, so the valve body 20 moves integrally with the insertion portion 12 .
After the key projections 41 and 42 reach the ends 45a and 46a (see FIGS. 3 and 4), the insertion portion 12 is displaced in the withdrawal direction (upward in FIG. 8). Thereby, as shown in FIG. 7, the insertion portion 12 is pulled out from the insertion hole 5a.

[Effect of pouring member insertion structure]
As shown in FIG. 1, in the pouring member insertion structure 10A, the valve body 20 is provided in the insertion part 12, and the engagement part 7 that engages with the engagement receiving part 24 of the valve body 20 is provided in the inserted part 5. is provided. Therefore, in the process of inserting the insertion portion 12, after the insertion portion 12 is inserted sufficiently deep into the insertion hole 5a to secure the flow path, the rotational displacement of the valve body 20 is restricted and the flow paths 13 and 14 are opened. be. Therefore, it is possible to suppress the leakage of the contents during the work of connecting the pouring member 10 to the inserted portion 5 .

In the pouring member insertion structure 10A, the key projections 41 and 42 are formed on the inner peripheral surface of the insertion hole 5a, and the key grooves 43 and 44 are formed on the outer peripheral surface of the insertion portion 12. At this time, the closing plate 21 of the valve body 20 closes the channels 13 and 14 . Therefore, it is possible to suppress the leakage of the contents during the operation of pulling out the pouring member 10 from the inserted portion 5 .

Since the key grooves 43 and 44 have bending grooves 47 and 48 in addition to the main grooves 45 and 46, the direction of movement of the key projections changes in the process of advancing in the key grooves, so that the operator can easily move the spouting member. Easier to check the completion of the insert operation. Therefore, the pouring member insertion structure 10A is excellent in operability.

The present invention is not limited to the above-described embodiments, and various modifications are possible without departing from the gist of the present invention. For example, in the pouring member insertion structure 10A shown in FIG. The structure of the inserted portion 5 is not limited to this. The spouting member insertion structure may have a key projection formed on one of the outer peripheral surface of the insertion portion and the inner peripheral surface of the insertion hole, and a key groove into which the key projection is fitted on the other. Therefore, contrary to the pouring member insertion structure 10A shown in FIG. 1, a key groove may be formed in the inserted portion and a key projection may be formed in the pouring member.

In the pouring member insertion structure 10A shown in FIG. 1 and the like, two key projections 41 and 42 are formed on the inserted portion 5, and two key projections 51 and 52 are formed on the insertion portion 12. As shown in FIG. The number of key projections formed on the inserted portion and the insertion portion is not limited to two, and may be one or any number of three or more. In the pouring member insertion structure 10A, two key grooves 43 and 44 are formed in the insertion portion 12, and two key grooves 53 and 54 are formed in the valve body 20. As shown in FIG. The number of key grooves formed in the insertion portion and the valve body is not limited to two, and may be one or any number of three or more.

The shape of the key protrusion is not particularly limited. The shape of the key protrusion is not limited to a hemispherical shape, and may be rectangular parallelepiped, conical, truncated conical, pyramidal, truncated pyramidal, or the like. The shape of the keyway is not particularly limited. The shape of the cross section perpendicular to the length direction of the keyway is not limited to a semicircular shape, and may be a rectangular shape, a trapezoidal shape, an arc shape, or the like.

In the pouring member insertion structure 10A shown in FIG. is not particularly limited. The number of key protrusions on the inner peripheral surface of the insertion portion may be one, or any number of three or more. The number of key grooves on the inner peripheral surface of the insertion portion may be one, or any number of three or more.
In the pouring member insertion structure 10A shown in FIG. is not particularly limited. The number of key projections on the inner peripheral surface of the insertion hole may be one, or any number of three or more. The number of key grooves on the outer peripheral surface of the insertion portion may be one, or any number of three or more.

The base portion and the insertion portion that constitute the pouring member may be separate bodies. When the base portion and the insertion portion are separate members, for example, the following structure can be adopted. The base has a through hole (not shown) into which a part of the insertion portion is inserted. A part of the insertion portion is connected to the base portion by means of concave-convex fitting, screw fitting, or the like while being inserted into the through hole. The base and the insert may be detachable.

If the base portion and the insertion portion are separate members, the following methods of use are possible. Attach the base to the container. With the insert removed from the base, the contents are filled into the container through the through hole. The insert is then attached to the base. According to this method, the content can be filled into the container through the through-hole of the base instead of the insertion portion, so that the content flows smoothly into the container and the filling operation is facilitated.

In the pouring member insertion structure 10A shown in FIG. 1 and the like, the engaging portion 7 of the first inner cylindrical portion 2 and the engagement receiving portion 24 of the valve body 20 can be engaged. The engagement structure (engagement portion and engagement receiving portion) between the first inner cylindrical portion and the valve body may be omitted. Even if the engaging portion and the engaging receiving portion are not provided, it is preferable that the displacement of the valve body in the direction around the center axis is regulated by friction or the like when it comes into contact with the first inner cylindrical portion.

The pouring member 10 shown in FIG. 1 and the container 34 (see FIG. 7) to which the pouring member 10 is attached constitute a packaging container.

In the pouring member insertion structure 10A shown in FIG. The paths 13, 14 are closed. The pouring member insertion structure is not limited to this, but the flow path of the pouring member closes when the valve body moves toward the container, and the flow path of the pouring member closes when the valve body moves toward the inserted portion. An open structure may be adopted. For example, a stepped portion is formed on the inner surface of the flow passage of the pouring member, and when the valve body moves toward the container, the closing plate of the valve body contacts the stepped portion to close the flow channel, and the valve body is inserted. A structure is possible in which the closing plate moves away from the stepped portion to open the flow path when moved toward the portion.

INDUSTRIAL APPLICABILITY The pouring member inserting structure of the present invention is suitable for refilling and replenishing the contents of a container. In particular, it is suitable when using contents that pose a problem of liquid leakage when refilling or refilling, such as printing ink, toiletry products, seasonings, pharmaceuticals, medical/testing equipment, fuel, etc. .

5 Insertion portion 5a Insertion hole 10 Extraction member 10A Extraction member insertion structure 12 Insertion portion 13, 14 Flow path 20 Valve body 24 Engagement receiving portion 34 Container 35a Opening 41 First key projection (second spiral engaging portion) 42 Second key projection (second spiral engaging portion) 47 First bending groove (second spiral engaging portion) spiral engaging portion), 48 second bending groove (second spiral engaging portion), 51 first key projection (first spiral engaging portion), 52 second key projection (first spiral engaging portion) joint portion), 53... First key groove (first spiral engaging portion), 54... Second key groove (first spiral engaging portion), C1... Central axis (axis line) of pouring member.

Claims (6)

A pouring member that is attached to the opening of the container and has a cylindrical insertion portion, a valve body that is axially movably provided in the insertion portion, and an insertion hole with a circular cross section into which the insertion portion is inserted. and an inserted portion,
the valve element moves toward the container side or the inserted portion side with respect to the insertion portion to open the flow path of the pouring member;
A pouring member insertion structure, wherein a first spiral engagement portion that engages with each other and enables relative movement in a spiral direction is formed on an inner peripheral surface of the insertion portion and an outer peripheral surface of the valve body. 2. The note of claim 1, wherein the inserted portion is formed with an engaging portion that engages with the valve body inside the insertion portion so as not to rotate relative to each other when the pouring member is inserted into the insertion hole. Ejection member insertion structure. A second spiral engagement portion is formed on the inner peripheral surface of the insertion hole and the outer peripheral surface of the insertion portion so as to engage with each other and allow relative movement in the spiral direction. 3. The pouring member insertion structure according to claim 1 or 2, wherein the spiral angle of the portion is equal to the spiral angle of the first spiral engaging portion. The first spiral engagement portion formed on the inner peripheral surface of the insertion portion is one of a projection and a groove, and the first spiral engagement portion formed on the outer peripheral surface of the valve body comprises: The pouring member insertion structure according to any one of claims 1 to 3, which is the other of a projection and a groove. The pouring member further comprises a base attached to the opening of the container,
The insertion portion is formed to protrude from the base,
The pouring member inserting structure according to any one of claims 1 to 4, wherein the base and the inserting portion are separate bodies and are joined together. A packaging container comprising the pouring member of the pouring member insertion structure according to any one of claims 1 to 5, and the container.

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