JP7565205B2 - Spout and packaging container - Google Patents

Description

The present invention relates to a spout and a packaging container.

A spout has been proposed in which the spout is opened and closed by the axial displacement of a movable member (see, for example, Patent Document 1). The spout is connected to a receiving container, and the spout is opened by the displacement of the movable member. This allows liquid to be supplied to the receiving container.

JP 2014-80218 A

The dispensing spout is required to prevent leakage of liquid when connected to a receiving container.

One aspect of the present invention aims to provide a spout and a packaging container that can prevent liquid leakage when connected to a receiving container.

One aspect of the present invention provides a spout for dispensing, which includes a cylindrical dispensing body with an open tip and a dispensing flow path through which a fluid flows, and a valve body that is inserted into the dispensing body so as to be displaceable in the axial direction and opens and closes the dispensing flow path, in which at least a portion of the tip of the valve body protrudes from the tip of the dispensing body in a closed position in which the dispensing flow path is closed, and the valve body can be displaced in the axial direction so as to increase or decrease the protruding dimension of the dispensing body from the tip, thereby switching between the closed position and an open position in which the dispensing flow path is opened.

It is preferable that the valve body transitions from the closed position to the open position when the projection dimension of the dispensing body from the tip becomes smaller, and transitions from the open position to the closed position when the projection dimension of the dispensing body from the tip becomes larger.

It is preferable that the valve body has a locking protrusion, and the dispensing body has a step formed thereon to lock onto the locking protrusion and regulate the displacement of the valve body.

Yet another aspect of the present invention provides a packaging container comprising the spout and a container body to which the spout is attached.

One aspect of the present invention provides a spout and a packaging container that can prevent liquid leakage when connected to a receiving container.

FIG. 2 is an exploded perspective view of the spout of the embodiment. FIG. FIG. FIG. 2 is a cross-sectional view of a spout for dispensing according to an embodiment. FIG. 2 is a cross-sectional view of a spout for dispensing according to an embodiment.

The following describes an embodiment of the present invention with reference to the drawings.

[Pouring spout]
Fig. 1 is an exploded perspective view of a spout 10 according to an embodiment. Fig. 2 is a cross-sectional view of a spout body 20. Fig. 3 is a front view of a valve body 30. Figs. 4 and 5 are cross-sectional views of the spout 10. In the following description, the vertical positional relationship is provisionally defined according to Fig. 4. That is, the upward direction in Fig. 4 is referred to as "upward." The downward direction in Fig. 4 is referred to as "downward." The positional relationship defined here does not limit the posture of the spout 10 during use.

As shown in FIG. 1 , the spout 10 includes a spout body 20 and a valve body 30 .
The upper end of the pouring body 20 in Fig. 2 is the base end, and the lower end of the pouring body 20 in Fig. 2 is the tip end. The upper end of the valve body 30 in Fig. 3 is the base end, and the lower end of the valve body 30 in Fig. 3 is the tip end.

(Injection body)
The pouring body 20 includes an attachment portion 11, a connecting tube portion 12, a flange portion 13, and a pouring tube portion 14. The pouring body 20 is formed in a cylindrical shape as a whole. C1 is the central axis of the pouring body 20. The central axis C1 is the central axis of the attachment portion 11, the connecting tube portion 12, and the pouring tube portion 14. The direction along the central axis C1 is the axial direction of the pouring body 20. In the pouring body 20, "planar view" refers to viewing from a direction parallel to the central axis C1.

The mounting portion 11 has a so-called boat shape. A through hole 11a is formed in the center of the mounting portion 11 along the central axis C1. The through hole 11a has a circular shape in a plan view. A tapered inclined portion 11b having an outer diameter that decreases downward is formed in the upper part of the inner circumferential surface of the through hole 11a. The inclined portion 11b reaches the upper surface of the mounting portion 11.
As shown in FIG. 2, the attachment portion 11 is attached to a container body 35 that contains the liquid content (fluid).

The connecting tube portion 12 extends downward from the center of the lower surface of the attachment portion 11. The connecting tube portion 12 is cylindrical. The internal space of the connecting tube portion 12 is a through hole 12a. The through hole 12a is circular in a plan view.
The flange portion 13 protrudes outward from the outer circumferential surface of the lower end portion of the connecting tubular portion 12. The flange portion 13 is shaped like a plate perpendicular to the central axis C1.

The pouring tube portion 14 extends downward from the underside of the flange portion 13. The pouring tube portion 14 is cylindrical. The internal space of the pouring tube portion 14 is a flow hole 14a. The flow hole 14a is circular in a plan view. The flow hole 14a opens at the tip 14b of the pouring tube portion 14. This opening is called the tip opening 14c. The tip opening 14c serves as an outlet through which the content liquid flows out.

The inner diameter of the flow hole 14a is larger than the inner diameter at the lower end of the connecting tube portion 12. Therefore, a step 15 is formed at the upper end of the dispensing tube portion 14 due to the difference in inner diameter between the flow hole 14a and the flow hole 12a.

The flow holes 11a, 12a, and 14a, which are the internal spaces of the mounting portion 11, the connecting tube portion 12, and the dispensing tube portion 14, are the dispensing flow path 16 through which the content liquid (fluid) flows.

(Valve body)
4, the valve body 30 is inserted into the pouring flow passage 16 of the pouring body 20. The valve body 30 is displaceable in the axial direction of the pouring body 20 (the direction along the central axis C1).

As shown in Fig. 3, the valve body 30 includes a closing portion 21, a base portion 22, an extension portion 23, a tip portion 24, and a pair of locking arms (locking protrusions) 25. C2 is a central axis of the valve body 30. The central axis C2 is a central axis of the closing portion 21, the base portion 22, the extension portion 23, and the tip portion 24. The central axis C2 coincides with the central axis C1 (see Fig. 4).
The closing portion 21 is formed in a disk shape (or a cylindrical shape). The outer diameter of the closing portion 21 is larger than the inner diameter of the through hole 11a. The closing portion 21 can close the upper end opening of the through hole 11a (see FIG. 4).

A tapered inclined portion 21a is formed on the lower part of the outer peripheral surface of the closing portion 21, with the outer diameter decreasing downward. The inclined portion 21a can abut liquid-tightly against the inclined portion 11b of the flow hole 11a (see FIG. 4). The inclination angle of the inclined portion 21a with respect to the central axis C2 is equal to the inclination angle of the inclined portion 11b with respect to the central axis C1. It is preferable that the inclined portion 21a abuts against the inclined portion 11b in a planar manner (see FIG. 4).

As shown in FIGS. 1 and 3 , the base 22 includes a base post 26 and an intermediate plate 27 .
The base pillar 26 protrudes downward from the lower surface of the closing portion 21. The base pillar 26 is, for example, columnar in shape with a cross-shaped cross section perpendicular to the central axis C2. The intermediate plate 27 is provided at the tip (lower end) of the base pillar 26. The intermediate plate 27 is disk-shaped and perpendicular to the central axis C2.

The extension portion 23 extends downward from the center of the lower surface of the intermediate plate 27. The cross section of the extension portion 23 perpendicular to the central axis C2 may be, for example, circular, rectangular, or cross-shaped.

The tip portion 24 is formed in a cylindrical shape with a cover. The tip portion 24 includes a top plate portion 28, a tubular portion 29, and a plurality of protrusions 31.
The top plate portion 28 is formed in a disk shape perpendicular to the central axis C2.
The tubular portion 29 has a cylindrical shape that hangs down from the periphery of the top plate portion 28. The outer diameter of the tubular portion 29 is larger than the outer dimension (e.g., the outer diameter) of the extension portion 23. The outer diameter of the tubular portion 29 is smaller than the inner diameter of the pouring tubular portion 14.

As shown in FIG. 3, the protrusion 31 is formed on the tip 29a of the cylindrical portion 29. The protrusion 31 protrudes downward from the end face of the tip 29a. The multiple protrusions 31 are provided at different positions in the circumferential direction of the cylindrical portion 29 (the direction around the central axis C2).

As shown in Figs. 1 and 3, the locking arm 25 extends obliquely upward in a straight line from the outer circumferential surface of the extension 23. The locking arm 25 extends from the outer circumferential surface of the extension 23 at an incline so as to rise in the radially expanding direction. The cross-sectional shape of the locking arm 25 perpendicular to the length direction may be rectangular, circular, or the like. The locking arm 25 can be elastically bent and deformed.

The pair of locking arms 25 are formed at positions that are rotationally symmetrical with respect to the central axis C1 (positions that are offset by approximately 180° in the axial direction around the central axis C1). The inclination angles of the two locking arms 25 are the same. The lengths of the two locking arms 25 are the same. The height positions of the tips 25a of the two locking arms 25 are the same.

As shown in Fig. 5, the distances of the tips 25a of the two locking arms 25 from the central axis C2 are determined so that the tips 25a can be locked to the step 15. In this embodiment, the inner diameter of the step 15 is smaller than the maximum diameter of a circle that is centered on the central axis C2 and passes through the tips 25a of the two locking arms 25. Therefore, the tips 25a can be locked to the step 15. When the tips 25a can be locked to the step 15, the upward displacement (displacement toward the base end) of the valve body 30 is restricted. Therefore, the valve body 30 can be prevented from falling off the pouring body 20.
The locking arms 25 can be elastically bent and deformed, and therefore, when the valve body 30 is inserted into the pouring flow path 16 from the base end side, the locking arms 25 can be bent and deformed inward.

As shown in Fig. 4, the valve body 30 can take a "closed position P1". In the closed position P1, the inclined portion 21a of the closing portion 21 abuts against the inclined portion 11b of the through hole 11a. Therefore, the through hole 11a (the pouring flow path 16) is closed by the closing portion 21.
In the closed position P1, a portion including the lower end of the valve body 30 protrudes downward from the tip 14b of the pouring tube portion 14. More specifically, the lower part of the tip portion 24 protrudes downward from the tip 14b of the pouring tube portion 14.

As shown in FIG. 5, the valve body 30 can also take an "open position P2." The valve body 30 in the open position P2 is in a higher position than the valve body 30 in the closed position P1. In the open position P2, the closing portion 21 is away from the inclined portion 11b of the flow hole 11a. Therefore, the flow hole 11a (dispensing flow path 16) is opened. Therefore, the content liquid in the container body 35 can flow out of the dispensing spout 10 from the tip opening 14c through the dispensing flow path 16.

The valve body 30 can be switched between a closed position P1 and an open position P2 by being displaced in the axial direction (up and down) of the dispensing body 20.

[Packaging container]
As shown in Figures 4 and 5, the spout 10 and the container body 35 constitute a "packaging container 34".

[How to use the pouring spout]
Next, a method of using the dispensing spout 10 will be described with reference to FIGS.
4, at the start of use, the valve body 30 is in the closed position P1 by being pushed downward by the content liquid in the container body 35. The pouring flow path 16 of the pouring body 20 is closed by the valve body 30.

The pouring spout 10 can be connected to a receiving container (not shown) by inserting its lower portion (e.g., the pouring tube portion 14 and the lower portion of the valve body 30) into the receiving container (not shown). When the pouring spout 10 is brought close to the receiving container (not shown) for connection and inserted, the valve body 30 maintains the closed position P1. Therefore, when the pouring spout 10 is connected to the receiving container (not shown), leakage of the contents is unlikely to occur.

As shown in FIG. 5, the tip 24 of the valve body 30 is brought into contact with an abutment object (e.g., an abutment portion in a receiving container; not shown), and in this state the dispensing spout 10 is further lowered. This causes the dispensing body 20 to descend. Meanwhile, the valve body 30 maintains its height position due to the axial force applied to the tip 24 by the abutment object. Therefore, the valve body 30 is displaced relative to the dispensing body 20 in the axial direction, and the protruding dimension from the tip 14b of the dispensing tube portion 14 becomes smaller. The valve body 30 moves from the closed position P1 to the open position P2.

In the open position P2, the closing portion 21 is separated from the mounting portion 11, and the flow hole 11a (dispensing flow path 16) is opened. Therefore, the liquid content in the container body 35 flows out from the tip opening 14c of the dispensing tube portion 14 through the dispensing flow path 16. The liquid content flows into the receiving container (not shown).

As shown in FIG. 4, when the dispensing spout 10 is raised, the dispensing body 20 rises. Meanwhile, the valve body 30 maintains its height position. Therefore, the valve body 30 returns to the closed position P1, and the dispensing flow path 16 is closed.

The connection between the spout 10 and the receiving container (not shown) can be released by pulling the spout 10 out of the receiving container (not shown). Because the valve body 30 is in the closed position P1, leakage of the liquid contents is unlikely to occur when the spout 10 is released from the receiving container (not shown).

[Effects of the spout of the embodiment]
In the spout 10, the valve body 30 can be switched between a closed position P1 and an open position P2 by displacing the valve body 30 so that the projection dimension from the tip 14b of the spout tube portion 14 increases or decreases. Therefore, the pouring flow path 16 can be opened and closed by adjusting the axial force applied to the tip portion 24 (see Figs. 4 and 5). The valve body 30 is not in the open position P2 before insertion into a receiving container (not shown) or after being pulled out. Therefore, in the spout 10, leakage of the content liquid is unlikely to occur when connecting to or disconnecting from a receiving container (not shown).

The dispensing spout 10 can be switched between the closed position P1 and the open position P2 simply by raising and lowering the valve body 30 and the dispensing body 20 relative to one another. In these operations, the operator does not need to twist the dispensing spout 10. Therefore, the operation of connecting and disconnecting the dispensing spout 10 is easy.

The valve body 30 transitions from the closed position P1 to the open position P2 when the protruding dimension from the tip 14b becomes smaller. Therefore, when the dispensing spout 10 is connected to a receiving container (not shown), the dispensing flow path 16 can be easily opened by utilizing the movement in the direction approaching the receiving container, and the content liquid can be supplied to the receiving container (not shown).
The valve body 30 transitions from the open position P2 to the closed position P1 when the protruding dimension from the tip 14b increases. Therefore, when the dispensing spout 10 is released from the receiving container (not shown), the dispensing flow path 16 can be easily closed by utilizing the movement in the direction away from the receiving container.

The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the gist of the present invention. For example, in the closed position P1, only a portion of the tip portion 24 may protrude from the tip 14b of the dispensing tube portion 14, or the entire tip portion 24 may protrude from the tip 14b. In other words, in the closed position P1, it is sufficient that at least a portion of the tip portion 24 protrudes from the tip 14b.

In the above embodiment, the valve body 30 has two locking arms 25, but the number of locking arms may be one or more (any number greater than or equal to two).

The spout of the present invention is suitable for use in refilling or replenishing the contents of a container. It is particularly suitable for use with contents for which leakage during refilling or replenishing is an issue, such as printing ink, toiletries, seasonings, medicines, and fuel.

10... dispensing spout, 14b... tip, 15... step, 16... dispensing flow path, 20... dispensing body, 24... tip, 25... locking arm (locking protrusion), 30... valve body, 34... packaging container, 35... container body, P1... closed position, P2... open position.

Claims (4)

a cylindrical pouring body having an opening at its tip and a pouring flow path through which a fluid flows;
a valve body that is inserted into the pouring body so as to be displaceable in the axial direction and opens and closes the pouring flow path;
Equipped with
The valve body includes a closing portion, a base portion, an extension portion, a tip portion, and a plurality of locking arms.
The base of the valve body includes a base post and an intermediate plate,
The base post protrudes from a distal end surface of the closing portion toward a distal end side,
The extension portion of the valve body extends from a central portion of a surface of the intermediate plate at a tip side toward a tip side,
At least a part of the tip of the valve body protrudes from the tip of the pouring body at a closing position where the pouring flow path is closed,
The valve body can be switched between the closed position and an open position that opens the pouring flow path by displacing the valve body in the axial direction so as to increase or decrease a protruding dimension from the tip of the pouring body,
The locking arm portion extends linearly from the outer circumferential surface of the extension portion toward the base end side at an inclination in a radially expanding direction,
The spout has an inner diameter that is smaller than the maximum diameter of a circle that passes through the tip of the locking arm, the inner diameter of the step that is formed by the difference in inner diameter of the pouring flow path . The spout of claim 1, wherein the valve body transitions from the closed position to the open position when the protruding dimension of the spout from the tip becomes smaller, and transitions from the open position to the closed position when the protruding dimension of the spout from the tip becomes larger. The spout according to claim 1 or 2, wherein the locking arm portion is locked to the step portion to restrict displacement of the valve body. A packaging container comprising a spout for pouring described in any one of claims 1 to 3 and a container body to which the spout for pouring is attached.

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