JP7285700B2 - Spouting member connection structure and packaging container - Google Patents

Description

TECHNICAL FIELD The present invention relates to a pouring member connection structure and a packaging container.

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

For example, when connecting or disconnecting the pouring member to or from a device to which it is to be connected, it may be difficult for the user to understand the timing at which the operation should be performed.

An aspect of the present invention provides a pouring member connection structure and a packaging container that allow a user to understand the timing of connecting or disconnecting the pouring member to a connection destination.

According to one aspect of the present invention, there is provided a pouring member having an insertion portion inside which a fluid flow path is formed, a valve body provided in the insertion portion so as to be movable in the axial direction, and the insertion portion being inserted. and an insertion portion having an insertion hole, wherein the inner peripheral surface of the insertion portion and the outer peripheral surface of the valve body are engaged with each other to enable relative displacement of the insertion portion and the valve body in a helical direction. The valve body is capable of switching between an open position that opens the flow path and a closed position that closes the flow path by the positional change, and the insertion A first engaging projection projecting toward the other is formed on one of the inner peripheral surface of the portion and the outer peripheral surface of the valve body, and the other of the inner peripheral surface of the insertion portion and the outer peripheral surface of the valve body is formed. , a second engagement projection that protrudes toward one side and is engageable with the first engagement projection is formed, and the first engagement projection and the second engagement projection are formed so that the insertion portion and the valve body Provided is a pouring member inserting structure that generates vibration when the first engaging projection rides over the second engaging projection in the process of relative displacement.

Preferably, in the pouring member connection structure, a stopper protrusion with which the first engagement protrusion engages is formed on one of the inner peripheral surface of the insertion portion and the outer peripheral surface of the valve body.

The first engaging projection and the second engaging projection may be formed along the axial direction.

The first engaging projection and the second engaging projection may be formed along the direction around the axis.

The first spiral engaging portion includes a key projection formed on one of the inner peripheral surface of the insertion portion and the outer peripheral surface of the valve body, and a key groove formed on the other and fitted to the key projection. , one of the first engaging projection and the second engaging projection is formed in the key groove, and the other of the first engaging projection and the second engaging projection is formed in the key It is good also as a structure which is a protrusion.

It is preferable that the valve body is in the closed position when the first engaging projection has passed over the second engaging projection.

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

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

Advantageous Effects of Invention According to one aspect of the present invention, when connecting or disconnecting a pouring member to a connection destination, the user can easily understand the timing at which the operation should be performed.

1 is a perspective view of a pouring member device of a first embodiment; FIG. 1 is a perspective view of a pouring member of the pouring member insertion structure of the first embodiment; FIG. FIG. 4 is a side view of part of the pouring member of the pouring member insertion structure of the first embodiment; FIG. 4 is a side view of a part of the pouring member of the pouring member insertion structure of the first embodiment, seen from the side opposite to the previous figure. Fig. 2 is a cross-sectional view of the pouring member of the pouring member insertion structure of the first embodiment; 4 is a perspective view of the valve body of the pouring member insertion structure of the first embodiment; FIG. It is the perspective view which looked at the valve body of the extraction|pouring member insertion structure of 1st Embodiment from the opposite side to the previous figure. Fig. 3 is a plan view of the pouring member and the valve body of the pouring member insertion structure of the first embodiment; Fig. 4 is an enlarged plan view of the pouring member and the valve body of the pouring member insertion structure of the first embodiment; Fig. 2 is a cross-sectional view of the pouring member insertion structure of the first embodiment; FIG. 4 is a cross-sectional view explaining the operation of the pouring member insertion structure of the first embodiment; FIG. 4 is a cross-sectional view explaining the operation of the pouring member insertion structure of the first embodiment; FIG. 4 is an enlarged plan view showing operations of the pouring member and the valve body of the pouring member insertion structure of the first embodiment; FIG. 4 is an enlarged plan view showing operations of the pouring member and the valve body of the pouring member insertion structure of the first embodiment; FIG. 4 is an enlarged plan view showing operations of the pouring member and the valve body of the pouring member insertion structure of the first embodiment; FIG. 10 is a cross-sectional view of the pouring member insertion structure of the second embodiment; FIG. 7 is an enlarged cross-sectional view of the pouring member insertion structure of the second embodiment; FIG. 11 is a perspective view of a portion of the valve body of the pouring member insertion structure of the third 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.

[Pourout member insertion structure] (first embodiment)
FIG. 1 is a perspective view of a pouring member device 100 of the first 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 cross-sectional view of the pouring member 10. As shown in FIG. 6 is a perspective view of the valve body 20. FIG. FIG. 7 is a perspective view of the valve body 20 viewed from the side opposite to FIG. FIG. 8 is a plan view of the pouring member 10 and the valve body 20. FIG. FIG. 9 is an enlarged plan view of the pouring member 10 and the valve body 20. FIG. FIG. 10 is a cross-sectional view of the pouring member insertion structure 10A.
In the following description, an XYZ orthogonal coordinate system may be adopted. As shown in FIG. 1 , the X direction is the width direction of the main plate portion 4 . The Y direction is the length direction of the main plate portion 4 . The Y direction is orthogonal to the X direction within the plane along the main plate portion 4 . The Z direction is the thickness direction of the main plate portion 4 . The Z direction is orthogonal to the X and Y directions. Planar view means viewing parallel to the Z direction.

A vertical positional relationship is provisionally determined according to FIG. That is, in FIG. 10, the upward direction 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 , a valve body 20 and a receiving portion 30 .
The receiving portion 30 includes a main plate portion 4 , an inserted portion 5 , a bottom plate portion 6 , and a restricting convex portion 7 . A pouring member insertion structure 10A (pouring member connection structure) of the first embodiment has a pouring member 10, a valve body 20, and an inserted portion 5. As shown in FIG.

The main plate portion 4 is generally formed in a rectangular shape.
The inserted portion 5 is formed in a tubular shape protruding downward from one surface (lower surface) of the main plate portion 4 . The internal space of the inserted portion 5 is an insertion hole 5a. The cross section of the insertion hole 5a along the XY plane is circular. C2 is the central axis of the insertion hole 5a. The direction along the central axis C2 is the axial direction of the inserted portion 5 .

As shown in FIGS. 1 and 10, 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 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 insertion hole 5a. That is, the angle around the axis between the first key projection 41 and the second key projection 42 (inter-projection angle) 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.

A bottom plate portion 6 is formed at the lower end of the inserted portion 5 . The bottom plate portion 6 is formed with a flow hole 6a, which is a through hole through which fluid flows.
The restricting convex portion 7 protrudes upward from the bottom plate portion 6 . The restricting convex portion 7 is, for example, cylindrical. An engaging portion 8 is formed on the tip surface 7a of the restricting convex portion 7. As shown in FIG. The engaging portion 8 protrudes upward from the tip surface 7a. The engaging portion 8 has a non-circular shape in a plan view, and can restrict the displacement of the valve body 20 in the direction around the central axis C<b>1 when engaged with the engaging receiving portion 24 . The engaging portion 8 is, for example, a cross-shaped protrusion when viewed from the axial direction of the inserted portion 5 . The engaging portion 8 is located inside the inserted portion 5 and engages with the engagement receiving portion 24 so as to be relatively unrotatable.

As shown in FIG. 10, 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, for example, have a so-called boat shape. As shown in FIG. 10, the base 11 is attached to the opening 35a of the container body 35. As shown in FIG.

As shown in FIG. 2, the insertion portion 12 includes a cylindrical portion 12A and a distal projection portion 12B. The tubular portion 12A is cylindrical. The insertion portion 12 protrudes downward in FIG. 10 from the first surface 11a (lower surface in FIG. 10) 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; The direction along the central axis C<b>1 is the axial direction of the pouring member 10 .

The tip protruding portion 12B is formed in a disc shape and provided at the end (lower end in FIG. 10) of the tubular portion 12A in the insertion direction. The tip projecting portion 12B projects inward from the end portion (lower end portion in FIG. 7) of the tubular portion 12A. A flow port 16 is formed in the tip protruding portion 12B. The circulation port 16 has a circular shape concentric with the tip projecting portion 12B when viewed from the axial direction of the pouring member 10 . The inner diameter of the flow port 16 is smaller than the outer diameter of the tip protrusion 12B.

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 flow paths 13 and 14 allow the contents of the container body 35 (see FIG. 10) to be discharged to the outside from the flow opening 16 of the insertion portion 12 .

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 (cylindrical portion 12A). 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 10). 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 10). 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 54 of the valve body 20. FIG. 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. When this angle is 120° or less, the spouting member 10 is less twisted 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 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) is about 180°. This inter-groove angle is equal to the inter-projection angle (see FIG. 1) between the first key projection 41 and the second key projection 42 . The groove-to-groove angle between the first keyway 43 and the second keyway 44 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 12b (see FIG. 10) of the insertion portion 12 (cylindrical portion 12A). The first key projection 51 and the second key projection 52 are formed on the inner peripheral surface of the small diameter portion 18 . 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 12b 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 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 a "first spiral engaging portion" formed on the inner peripheral surface 12b of the insertion portion 12. As shown in FIG. The projection-to-projection angle between the first key projection 51 and the second key projection 52 is not limited to 180°, and may be any angle.

As shown in FIG. 5 , the insertion portion 12 (cylindrical portion 12A) has a large diameter portion 17 with a large inner diameter and a small diameter portion 18 with a smaller inner diameter than the large diameter portion 17 . The small diameter portion 18 is positioned below the large diameter portion 17 . A step portion 19 is formed at the boundary between the large diameter portion 17 and the small diameter portion 18 due to the difference in inner diameter.

A second engaging projection 56 and a stopper projection 57 are formed on the inner peripheral surface 17 a of the large diameter portion 17 . As shown in FIGS. 8 and 9, the second engaging protrusion 56 protrudes inward (in a direction toward the central axis C1) from the inner peripheral surface 17a of the large diameter portion 17. As shown in FIGS. It can also be said that the second engaging protrusion 56 protrudes toward the outer peripheral surface 22 a of the cylindrical portion 22 . As shown in FIG. 5, the second engaging projection 56 extends upward from the stepped portion 19 along the central axis C1.

As shown in FIG. 8, one of the circumferential directions D (the direction around the central axis C1) in the insertion portion 12 (cylindrical portion 12A) is called the circumferential direction D1. The other circumferential direction D (direction opposite to the circumferential direction D1) in the insertion portion 12 (cylindrical portion 12A) is referred to as a circumferential direction D2.
As shown in FIG. 9 , the second engaging projection 56 has a main portion 58 and an inclined portion 59 . The main portion 58 has a constant protrusion height H1 from the inner peripheral surface 17a. The plan view shape of the main portion 58 is rectangular. A side surface 58a of the main portion 58 on the side of the circumferential direction D2 is, for example, a surface along the radial direction of the insertion portion 12 .

The inclined portion 59 extends in a direction away from the main portion 58 (in the circumferential direction D1), starting from one end of the main portion 58 on the side of the circumferential direction D1. The inclined portion 59 gradually reduces the protrusion height from the inner peripheral surface 17a toward the peripheral direction D1. The planar view shape of the inclined portion 59 is triangular. The surface of the inclined portion 59 is an inclined surface 59a inclined at a constant angle. The inclination angle of the inclined surface 59 a with respect to the radial direction of the insertion portion 12 is greater than the inclination angle of the side surface 58 a with respect to the radial direction of the insertion portion 12 .
The planar view shape of the second engaging projection 56 is a trapezoidal shape obtained by combining a rectangular main portion 58 and a triangular inclined portion 59 .

As shown in FIGS. 8 and 9, the stopper protrusion 57 protrudes inward (toward the central axis C1) from the inner peripheral surface 17a of the large diameter portion 17. As shown in FIGS. It can also be said that the stopper protrusion 57 protrudes toward the outer peripheral surface 22 a of the cylindrical portion 22 . As shown in FIG. 5 , the stopper protrusion 57 extends upward from the stepped portion 19 .
As shown in FIG. 9, the stopper projection 57 is spaced from the second engagement projection 56 in the circumferential direction D2. The plan view shape of the stopper projection 57 is a rectangular shape. The stopper protrusion 57 has a constant protrusion height H2 from the inner peripheral surface 17a in the circumferential direction. A protrusion height H2 of the stopper protrusion 57 is higher than a protrusion height H1 of the second engaging protrusion 56 .

As shown in FIGS. 6 and 7 , the valve body 20 includes a closing plate 21 , a cylindrical portion 22 and a plurality of connecting portions 23 . As shown in FIG. 10, the valve body 20 is provided inside the insertion portion 12 so as to be able to change its position in the direction (axial direction) along the central axis C1.

The cylindrical portion 22 is cylindrical. 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 .

As shown in FIG. 7, a plurality of recesses 27 that are downwardly recessed are formed in the uppermost portion of the cylindrical portion 22 at intervals in the direction around the central axis C1. The concave portion 27 is formed in a rectangular shape, for example, when viewed from the radial direction of the cylindrical portion 22 . A portion between adjacent recesses 27 , 27 forms a plate-like projection 28 projecting upward from the bottom 27 a of the recess 27 . The plate-shaped convex portion 28 is formed in a rectangular shape, for example, when viewed from the radial direction of the tubular portion 22 . For example, a plurality of plate-shaped protrusions 28 are formed at intervals around the central axis C1. In this embodiment, the four plate-shaped protrusions 28 are formed at equal intervals in the direction around the central axis C1.

As shown in FIG. 6 , the closing plate 21 is formed in a disk shape concentric with the cylindrical portion 22 . The outer diameter of the closing plate 21 is substantially equal to the inner diameter of the flow port 16 (see FIG. 10) or slightly larger than the inner diameter of the flow port 16 . The closing plate 21 can close the flow port 16 . The closing plate 21 is perpendicular to the central axis C1. The closing plate 21 is positioned downwardly away from the cylindrical portion 22 .

A recessed engagement receiving portion 24 (engaged portion) that engages with the engaging portion 8 of the inserted portion 5 is formed on the distal end surface 21 a of the closing plate 21 . The engagement receiving portion 24 has a shape corresponding to the engaging portion 8 . The engagement receiving portion 24 has, for example, a cross shape when viewed from the axial direction of the valve body 20 . When the tip of the engaging portion 8 is fitted into the engaging receiving portion 24, displacement of the valve body 20 in the direction around the central axis C1 is restricted.

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 separates from the tip projecting portion 12B (see FIG. 12), the fluid in the insertion portion 12 flows out from the flow port 16 through the gap between the closing plate 21 and the tubular portion 22 .

As shown in FIGS. 7 and 8, a pair of first engaging protrusions 25 and a pair of outward protrusions 26 are formed on the uppermost outer peripheral surface 22a of the cylindrical portion 22. As shown in FIGS. The first engaging projections 25, 25 and the outward projections 26, 26 are formed on the uppermost outer peripheral surface 28a of the plate-like projection 28, respectively.

The first engagement protrusion 25 protrudes outward (in a direction away from the central axis C1) from the outer peripheral surface 22a (outer peripheral surface 28a). It can also be said that the first engaging protrusion 25 protrudes from the outer peripheral surface 22 a (the outer peripheral surface 28 a ) toward the inner peripheral surface 17 a of the large diameter portion 17 . The first engagement protrusion 25 has a constant protrusion height H3 from the outer peripheral surface 22a (outer peripheral surface 28a). The planar view shape of the first engagement protrusion 25 is, for example, a rectangular shape or an arc shape along the circumferential direction D. As shown in FIG. The width of the first engaging projection 25 (dimension in the circumferential direction D shown in FIG. 9) is smaller than the interval between the second engaging projection 56 and the stopper projection 57 .

As shown in FIG. 9, the projection height H3 of the first engaging projection 25 is determined so that it can be engaged with the second engaging projection 56 and the stopper projection 57. As shown in FIG. For example, since the distance between the tip surface 25a of the first engaging projection 25 and the inner peripheral surface 17a is smaller than the projection height H1 of the second engaging projection 56, the first engaging projection 25 moves in the spiral direction. has a height that can be engaged with the second engaging projection 56 at . Since the distance between the tip end surface 25a of the first engaging projection 25 and the inner peripheral surface 17a is smaller than the projection height H2 of the stopper projection 57, the first engaging projection 25 does not touch the stopper projection 57 in the process of moving in the spiral direction. It has a height that can be engaged.
As shown in FIG. 8, the two first engagement protrusions 25, 25 are formed at positions that are shifted by about 180° in the circumferential direction D. As shown in FIG.

As shown in FIGS. 7 and 8, the outward protrusion 26 is plate-shaped along the XY plane. The shape of the outward protrusion 26 in a plan view is an arc shape along the circumferential direction D with a constant protrusion height. The outward protrusion 26 protrudes outward (in a direction away from the central axis C1) from the outer peripheral surface 22a (outer peripheral surface 28a). The outward protrusion 26 has a constant protrusion height from the outer peripheral surface 22a (outer peripheral surface 28a). The two first engagement protrusions 25, 25 are formed at positions shifted by about 180° in the circumferential direction D. As shown in FIG.

10, the valve body 20 is in the closed position P1 where the closing plate 21 closes the flow port 16. In FIG. At the closed position P<b>1 , the closing plate 21 closes the flow port 16 by fitting into the flow port 16 .
As shown in FIGS. 8 and 9, the first engagement projection 25 of the valve body 20 is positioned between the second engagement projection 56 and the stopper projection 57 at the closed position P1.
The valve body 20 can also take an open position P2 (see FIG. 12) in which the flow port 16 is opened. That is, since the valve body 20 can change its position in the axial direction, it can switch between the closed position P1 and the open position P2. At the open position P2, the closing plate 21 opens the flow port 16 by moving away from the flow port 16. - 特許庁At the open position P2, the first engagement projection 25 of the valve body 20 is at a height position (higher than the second engagement projection 56 and the stopper projection 57) where it cannot interfere with the second engagement projection 56 and the stopper projection 57. good too.

[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. 10 , the closing plate 21 of the valve body 20 closes the flow port 16 . Therefore, leakage of the contents of the insertion portion 12 is suppressed.

As shown in FIG. 11, 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 C2 of the insertion hole 5a.

When 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. (see FIGS. 3 and 4).

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. 11).

10 and 11, the closing plate 21 is fitted in the flow port 16, and the lower surface of the closing plate 21 and the lower surface of the tip protrusion 12B are at the same height.

As shown in FIG. 12, when the engagement portion 8 is fitted into the engagement receiving portion 24, displacement of the valve body 20 in the direction around the central axis C1 is restricted. On the other hand, since the displacement of the insertion portion 12 in the spiral direction is not hindered, the insertion portion 12 continues to be displaced in the spiral direction. At this time, the key projections 51 and 52 of the insertion portion 12 advance through the key grooves 53 and 54 (see FIGS. 6 and 7).

Since the insertion portion 12 is displaced in the insertion direction (downward in FIG. 12) while the valve body 20 maintains its height position, the closing plate 21 is separated from the flow port 16 . Therefore, the contents (fluid) of the container 34 flow out from the flow port 16 through the gap between the closing plate 21 and the cylindrical portion 22 . The contents are supplied to a storage container (not shown) through the inserted portion 5 and the circulation hole 6a.
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. 12, the insertion portion 12 is rotated in the direction opposite to the insertion direction and displaced in the withdrawal direction (upward in FIG. 12). 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. 11, since the flow port 16 reaches the closing plate 21 as the insertion portion 12 rises, the flow paths 13 and 14 are closed by closing the flow port 16 .

The operation of the pouring member 10 and the valve body 20 in the process in which the valve body 20 moves from the open position P2 (see FIG. 12) to the closed position P1 (see FIG. 11) will be described with reference to FIGS. 13 to 15. FIG. 13 to 15 are enlarged plan views showing operations of the pouring member 10 and the valve body 20. FIG.
When the valve body 20 approaches the closed position P1 (see FIG. 11) due to the displacement of the insertion portion 12 in the helical direction, the second engaging projection 56 and the first engaging projection 25 are relatively displaced as shown in FIG. approaching, the first engaging projection 25 comes into contact with the inclined surface 59 a of the second engaging projection 56 .
Hereinafter, the direction of relative displacement between the insertion portion 12 and the valve body 20 when the valve body 20 approaches the closed position P1 (see FIG. 11) is referred to as the "closed direction." The direction of relative displacement between the insertion portion 12 and the valve body 20, which is opposite to the closing direction, is referred to as the "opening direction."

As shown in FIG. 14, when the insertion portion 12 is further displaced in the closing direction, the first engaging projection 25 rides on the second engaging projection 56 according to the inclination of the inclined surface 59a. Since the second engaging projection 56 has the inclined surface 59a, resistance when the first engaging projection 25 rides on the second engaging projection 56 is reduced.

When the first engaging projection 25 rides on the second engaging projection 56, at least one of the tubular portion 22 and the insertion portion 12 is elastically deformed in a direction away from the other so that the riding is possible. can. For example, if a portion of the cylindrical portion 22 (the plate-shaped convex portion 28) is elastically deformed in a diameter-reducing direction, that portion is displaced in a direction away from the insertion portion 12, so that the first engaging projection 25 is positioned at the first engaging projection 25. Riding on the second engagement projection 56 is facilitated. If a portion of the insertion portion 12 is elastically deformed in the diameter-expanding direction, that portion is displaced in a direction away from the valve body 20, so that the first engaging projection 25 does not ride on the second engaging projection 56. easier.

As shown in FIG. 15 , when the insertion portion 12 is further displaced in the closing direction, the first engagement projection 25 gets over the second engagement projection 56 . When the first engaging projection 25 drops from the second engaging projection 56, deformation in at least one of the cylindrical portion 22 and the insertion portion 12 is elastically restored. For example, deformation of a portion of the cylindrical portion 22 (the plate-shaped convex portion 28) in the direction of diameter reduction is elastically restored. Deformation of the insertion portion 12 in the radial expansion direction is also elastically restored. At that time, vibration occurs in at least one of the cylindrical portion 22 and the insertion portion 12, and the vibration is transmitted to the other. This vibration gives the operator a click feeling.
By the time the first engaging projection 25 rides over the second engaging projection 56, the valve body 20 reaches the closed position P1 (see FIG. 11).

As shown in FIG. 9 , when the insertion portion 12 is further displaced in the closing direction, the first engaging projection 25 reaches the stopper projection 57 . Therefore, further displacement of the insertion portion 12 in the closing direction is restricted.

Since the first engaging projection 25 is located on the side of the second engaging projection 56 in the circumferential direction D2, when the insertion portion 12 attempts to displace in the opening direction, the first engaging projection 25 and the second engaging projection 56 are displaced. The displacement is regulated by interference. Therefore, loosening of the valve body 20 at the closed position P1 is less likely to occur.

When the engagement portion 8 is disengaged from the engagement receiving portion 24 , the restriction on the rotation of the valve body 20 is released.
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. 11). Thereby, as shown in FIG. 10, the insertion portion 12 is pulled out from the insertion hole 5a.

[Effect of pouring member insertion structure]
In the pouring member insertion structure 10A, when the inserting portion 12 of the pouring member 10 is pulled out from the insertion hole 5a, vibration occurs when the first engaging projection 25 climbs over the second engaging projection 56, giving the operator a click feeling. is given. Therefore, the operator can recognize that the valve body 20 has reached the closed position P1. Therefore, in the operation of pulling out the insertion portion 12 of the pouring member 10 from the insertion hole 5a, the operator can easily understand the timing at which the insertion portion 12 can be pulled out. Therefore, it is unlikely that the pouring member 10 is pulled out before the valve body 20 reaches the closing position P1. In addition, since the timing at which the insertion portion 12 can be pulled out can be easily understood by the operator, the usability of the operator can be improved.

As shown in FIG. 15, when the first engaging projection 25 has passed over the second engaging projection 56, displacement of the insertion portion 12 and the valve body 20 in the opening direction is restricted. Therefore, loosening of the valve body 20 at the closed position P1 is less likely to occur. Therefore, when the insertion portion 12 of the pouring member 10 is pulled out from the insertion hole 5a, leakage of the contents from the insertion portion 12 can be suppressed. In addition, since the valve body 20 is less likely to loosen, even if the pouring member insertion structure 10A is shaken when the pouring member device 100 is transported, leakage of contents can be suppressed.

As shown in FIG. 9, the insertion portion 12 is provided with a stopper projection 57 that can be engaged with the first engagement projection 25. Therefore, after the valve body 20 reaches the closed position P1, the insertion portion 12 and the insertion portion 12 are closed. Excessive displacement of the valve body 20 in the closing direction is restricted. Therefore, the closed state of the flow port 16 by the valve body 20 can be normally maintained, and leakage of the contents can be suppressed. In addition, since excessive displacement of the insertion portion 12 and the valve body 20 in the closing direction is regulated, the workability of assembling the valve body 20 into the pouring member 10 can be enhanced.

Since the second engaging projection 56 is formed along the central axis C1, the first engaging projection 25 can be reliably engaged. Therefore, it is advantageous in terms of the effect of suppressing loosening and the effect of imparting a click feeling.

As shown in FIG. 7, a plurality (two) of the first engaging projections 25, the second engaging projections 56 and the stopper projections 57 are formed. Therefore, even when the valve body 20 is tilted with respect to the insertion portion 12, at least one first engaging projection 25 and at least one second engaging projection 56 can be engaged. Therefore, it is advantageous in terms of the effect of suppressing loosening and the effect of imparting a click feeling.

As shown in FIG. 10, the valve body 20 at the closed position P1 closes the flow port 16 at the end of the insertion portion 12 in the insertion direction. Therefore, leakage of contents from the insertion portion 12 can be suppressed in the operation of connecting the pouring member 10 to the insertion portion 5 .
Since the valve body 20 can close the flow port 16 with the closing plate 21, as shown in FIG. can be opened.

The circulation port 16 has a circular shape centered on the central axis C<b>1 , and the closing plate 21 has a circular shape concentric with the circulation port 16 . Therefore, positional deviation between the flow port 16 and the closing plate 21 due to the rotation of the insertion portion 12 is less likely to occur. Therefore, the closing plate 21 can reliably close the flow port 16 .

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 flow port 16 . 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.

[Pourout member insertion structure] (Second embodiment)
FIG. 16 is a cross-sectional view of a pouring member insertion structure 110A of the second embodiment. FIG. 17 is an enlarged cross-sectional view of part of the pouring member insertion structure 110A (portion A surrounded by phantom lines in FIG. 16).

As shown in FIGS. 16 and 17, the pouring member insertion structure 110A has the following configuration instead of the first engagement projection 25, the second engagement projection 56 and the stopper projection 57 in the first embodiment.
As shown in FIG. 17, a second engagement projection 156 is formed on the inner peripheral surface 18a of the small diameter portion 18 of the insertion portion 12. As shown in FIG. The second engaging projection 156 is an annular projection extending around the central axis C1. The shape of the cross section of the second engaging projection 156 (the cross section orthogonal to the length direction of the second engaging projection 156) is not particularly limited, and may be, for example, a curved convex shape (such as an arc shape), a polygonal shape (rectangular shape, triangular shape, etc.). etc.).

A first engaging projection 125 is formed on the outer peripheral surface 22 a of the valve body 20 . The first engaging projection 125 is an annular projection extending around the central axis C1. The shape of the cross section of the first engaging projection 125 (the cross section orthogonal to the length direction of the first engaging projection 125) is not particularly limited, and may be, for example, a curved convex shape (such as an arc shape), a polygonal shape (rectangular shape, triangular shape, etc.). etc.).
The projection height of the first engagement projection 125 is determined so as to be engageable with the second engagement projection 156 . The first engagement projection 125 and the second engagement projection 156 have the function of restricting the valve body 20 from falling out of the insertion section 12 .
Other configurations of the pouring member insertion structure 110A may be the same as the pouring member insertion structure 10A of the first embodiment.

When the insertion portion 12 of the pouring member 10 is pulled out from the insertion hole 5a, the displacement of the insertion portion 12 in the closing direction causes the valve body 20 to approach the closed position P1 (see FIG. 11). 1 engagement protrusion 125 is relatively close. When the insertion portion 12 is further displaced in the closing direction, the first engaging projection 125 climbs over the second engaging projection 156 to get over the second engaging projection 156 . When the first engaging projection 125 drops from the second engaging projection 156, vibration occurs in at least one of the tubular portion 22 and the insertion portion 12, as in the first embodiment. This vibration gives the operator a click feeling.

By the time the first engaging projection 125 rides over the second engaging projection 156, the valve body 20 reaches the closed position P1 (see FIG. 11). When the insertion portion 12 attempts to displace in the opening direction, the displacement is restricted by interference between the first engagement projection 125 and the second engagement projection 156 .

[Effect of pouring member insertion structure]
In the pouring member inserting structure 110A, when the inserting portion 12 of the pouring member 10 is pulled out from the insertion hole 5a, vibration occurs when the first engaging projection 125 climbs over the second engaging projection 156, giving the operator a click feeling. is given. Therefore, the operator can recognize that the valve body 20 has reached the closed position P1. Therefore, in the operation of pulling out the insertion portion 12 of the pouring member 10 from the insertion hole 5a, the operator can easily understand the timing at which the insertion portion 12 can be pulled out. Therefore, it is unlikely that the pouring member 10 is pulled out before the valve body 20 reaches the closing position P1. Moreover, the usability of the operator can be improved.

When the first engaging projection 125 has passed over the second engaging projection 156, displacement of the insertion portion 12 and the valve body 20 in the opening direction is restricted. Therefore, loosening of the valve body 20 at the closed position P1 is less likely to occur. Therefore, when the insertion portion 12 of the pouring member 10 is pulled out from the insertion hole 5a, leakage of the contents from the insertion portion 12 can be suppressed.

Since the first engaging projection 125 and the second engaging projection 156 are formed along the direction around the central axis C1, the first engaging projection 125 and the second engaging projection 156 are reliably engaged. be able to. Therefore, it is advantageous in terms of the effect of suppressing loosening and the effect of imparting a click feeling.

[Pourout member insertion structure] (Third embodiment)
FIG. 18 is a perspective view of part of the valve body 20 of the pouring member insertion structure 210A of the third embodiment.
As shown in FIG. 18, a pouring member insertion structure 210A has the following configuration instead of the first engaging projection 25, the second engaging projection 56 and the stopper projection 57 in the first embodiment.

First engagement protrusions 225 are formed on the inner peripheral surfaces of the key grooves 53 and 54 (see FIGS. 6 and 7) of the valve body 20, respectively. The first engaging projection 225 extends in a direction crossing the length direction of the key grooves 53, 54 (for example, a direction perpendicular to the length direction of the key grooves 53, 54). The first engaging projection 225 is preferably formed at a position including the deepest portions of the key grooves 53 and 54 . The shape of the cross section of the first engaging projection 225 (the cross section perpendicular to the length direction of the first engaging projection 225) is not particularly limited, and may be polygonal (rectangular, triangular, etc.), curved convex (arcuate, etc.), etc.).

The projection height of the first engagement projection 225 is set so that it can be engaged with the key projection (key projection 51 or key projection 52 (see FIG. 10)) fitted in the key groove (key groove 53 or key groove 54). Determined.
The first key projection 51 and the second key projection 52 correspond to "second engagement projection".
Other configurations of the pouring member insertion structure 210A may be the same as the pouring member insertion structure 10A of the first embodiment.

When the insertion portion 12 of the pouring member 10 is pulled out from the insertion hole 5a, the displacement of the insertion portion 12 in the closing direction causes the valve body 20 to approach the closed position P1 (see FIG. 11). It is relatively close to the engaging projection 225 . When the insertion portion 12 is further displaced in the closing direction, the first engaging projection 225 rides over the key projections 51 and 52 and overcomes the key projections 51 and 52 . When the first engaging projection 225 drops from the key projections 51 and 52, at least one of the cylindrical portion 22 and the insertion portion 12 vibrates, as in the first embodiment. This vibration gives the operator a click feeling.

By the time the first engagement projection 225 gets over the key projections 51 and 52, the valve body 20 reaches the closed position P1 (see FIG. 11). When the insertion portion 12 attempts to displace in the opening direction, the displacement is restricted by the interference between the first engagement projection 225 and the key projections 51 and 52 .

[Effect of pouring member insertion structure]
In the pouring member inserting structure 210A, when the inserting portion 12 of the pouring member 10 is pulled out from the insertion hole 5a, vibration occurs when the first engaging projection 225 climbs over the key projections 51 and 52, giving the operator a click feeling. Given. Therefore, the operator can recognize that the valve body 20 has reached the closed position P1. Therefore, in the operation of pulling out the insertion portion 12 of the pouring member 10 from the insertion hole 5a, the operator can easily understand the timing at which the insertion portion 12 can be pulled out. Therefore, it is unlikely that the pouring member 10 is pulled out before the valve body 20 reaches the closing position P1. Moreover, the usability of the operator can be improved.

When the first engagement projection 225 has passed over the key projections 51 and 52, displacement of the insertion portion 12 and the valve body 20 in the opening direction is restricted. Therefore, loosening of the valve body 20 at the closed position P1 is less likely to occur. Therefore, when the insertion portion 12 of the pouring member 10 is pulled out from the insertion hole 5a, leakage of the contents from the insertion portion 12 can be suppressed.

Since the first engaging projections 225 are formed within the key grooves 53 and 54, the first engaging projections 225 and the key projections 51 and 52 can be reliably engaged. Therefore, it is advantageous in terms of the effect of suppressing loosening and the effect of imparting a click feeling.

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.
In the pouring member insertion structure 10A shown in FIG. 1, as shown in FIGS. Although the first engagement projection 25 is formed on the surface 22a, the structures of the first engagement projection, the second engagement projection and the stopper projection are not limited to this. For example, the first engaging protrusion may be formed on the inner peripheral surface of the insertion portion, and the second engaging protrusion and the stopper protrusion may be formed on the outer peripheral surface of the valve body.
As shown in FIG. 7, two first engaging projections 25, two second engaging projections 56 and two stopper projections 57 are formed, but the number of each projection is not limited to this. The numbers of the first engaging projections 25, the second engaging projections 56, and the stopper projections 57 may each be one, or any number of two or more.

The pouring member insertion structures 10A, 110A, and 210A of the first to third embodiments are designed so that the valve body is in the closed position when the first engaging projections get over the second engaging projections. . Therefore, the operator can recognize that the valve body 20 has reached the closed position P1 when the click feeling is given.
In the pouring member insertion structure of the embodiment, the position of the valve body when the first engaging projection rides over the second engaging projection is not particularly limited. For example, as shown in FIG. 12, it is possible to design such that the valve body reaches the highest position when the first engaging projection gets over the second engaging projection.
In the pouring member insertion structure of the embodiment, a plurality of first engaging projections and a plurality of second engaging projections may be formed so that a click feeling can be obtained at a plurality of positions from the closed position to the open position. . For example, a design is possible in which a click feeling can be obtained at the start point, middle point, and end point of the movement process of the valve body.

As shown in FIG. 1, the engaging portion 8 has a cross shape, but the shape of the engaging portion is not limited to a cross shape. The shape of the engaging portion is sufficient as long as it can restrict the displacement of the valve body in the direction around the center axis when engaged with the engaging receiving portion, and may be, for example, a linear shape, a polygonal shape, or the like.

In the pouring member insertion structure 10A shown in FIG. The structure of the part 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 base portion and the insertion portion, which constitute the pouring member, may be integrated or separated. 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.

The pouring member 10 shown in FIG. 1 and the container 34 (see FIG. 10) 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.

The pouring member insertion structure may have the following configuration. An engaged portion is formed on the valve body. The inserted portion is formed with an engaging portion that engages with the engaged portion inside the inserted portion so as not to rotate relative to each other when the pouring member is inserted into the insertion hole.
"The first engaging projection rides over the second engaging projection" may be rephrased as "the second engaging projection rides over the first engaging projection". "The first engagement projection rides over the second engagement projection" may be rephrased as "one of the first engagement projection and the second engagement projection rides over the other".

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 for use with contents that pose a problem of liquid leakage during refilling or refilling, such as printing ink, toiletry products, seasonings, medicines, fuel, and the like.

5 Insertion portion 5a Insertion hole 10 Extraction member 10A, 110A, 210A Extraction member insertion structure 12 Insertion portion 12A Cylindrical portion 12B Tip protrusion 13, 14 Flow Path 16 Flow port 20 Valve body 21 Closing plate 25, 125, 225 First engagement projection 34 Container 35a Opening 41 First key projection (second spiral engagement joint portion), 42... second key projection (second spiral engaging portion), 47... first bending groove (second spiral engaging portion), 48... second bending groove (second spiral engaging portion) ), 51... First key projection (first spiral engagement portion), 52... Second key projection (first spiral engagement portion), 53... First key groove (first spiral engagement portion), 54... Second key groove (first spiral engaging portion), 56, 156... Second engaging projection, 57... Stopper projection, C1... Central axis (axis line) of pouring member, P1... Closed position, P2... open position.

Claims (7)

A pouring member having an insertion portion inside which a fluid flow path is formed, a valve body provided in the insertion portion so as to be axially variable in position, and an insertion portion having an insertion hole into which the insertion portion is inserted. and
A first helical engagement portion is formed on the inner peripheral surface of the insertion portion and the outer peripheral surface of the valve body so as to engage with each other and allow the relative displacement of the insertion portion and the valve body in the helical direction. wherein the valve body is capable of switching between an open position for opening the flow path and a closed position for closing the flow path by the positional change,
A first engaging projection is formed on one of the inner peripheral surface of the insertion portion and the outer peripheral surface of the valve body and protrudes toward the other;
a second engaging projection that protrudes toward one side and is engageable with the first engaging projection is formed on the other of the inner peripheral surface of the insertion portion and the outer peripheral surface of the valve body;
The first engagement projection and the second engagement projection generate vibration when the first engagement projection rides over the second engagement projection in the process of relative displacement of the insertion portion and the valve body,
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. the helix angle of the part is equal to the helix angle of the first helical engagement part ,
Spout member connection structure. 2. The pouring member connecting structure according to claim 1, wherein one of the inner peripheral surface of said inserting portion and the outer peripheral surface of said valve body is formed with a stopper projection with which said first engaging projection engages. 3. The pouring member connection structure according to claim 1, wherein said first engaging projection and said second engaging projection are formed along said axial direction. 2. The pouring member connecting structure according to claim 1, wherein said first engaging projection and said second engaging projection are formed along the direction around said axis. The first spiral engaging portion includes a key projection formed on one of the inner peripheral surface of the insertion portion and the outer peripheral surface of the valve body, and a key groove formed on the other and fitted to the key projection. has
one of the first engaging projection and the second engaging projection is formed in the key groove,
2. The pouring member connection structure according to claim 1, wherein the other of said first engaging projection and said second engaging projection is said key projection. The pouring member connecting structure according to any one of claims 1 to 5, wherein the valve body is in the closed position when the first engaging projection has crossed over the second engaging projection. A packaging container comprising the pouring member of the pouring member connection structure according to any one of claims 1 to 6 , and a container to which the pouring member is attached .

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