JP7496235B2 - Spout with cap, spout and container - Google Patents

Description

The present invention relates to a spout with a cap, a spout, and a container.

In a cap that seals the spout of a container, a tamper-proof ring is provided on the base end of the cap to make it possible to confirm that the cap has been opened. For example, Patent Documents 1 and 2 describe a configuration in which a bridge connecting the cap body and the ring is cut when the cap is opened. Patent Document 3 describes a configuration in which an undercut portion is provided on the inner circumference of the ring portion and a rotation stopper is provided on the spout, preventing the ring portion from rotating together with the cap body when the cap body is opened.

JP 2008-285205 A JP 2009-40442 A JP 2011-246128 A

The breaking strength of the bridge portion that connects the ring portion to the cap body is adjusted so that excessive resistance is not generated when consumers open the cap. However, when an external force is applied to the cap during transportation or storage of a container with a cap sealing the spout, the bridge portion may break even if the cap is not being opened. If the bridge portion breaks during transportation or storage, the appearance of the container may suggest that it has been opened, even if the cap has not been opened, which causes a problem of loss of commercial value.

Patent Document 1 also describes providing a ring deformation prevention rib on the inner circumference of the ring when the ring is engaged with the mouth portion by circumferential displacement via a ratchet. However, this ring deformation prevention rib is intended to ensure that the bridge breaks when the ratchet engages when the container is opened. Similarly, the anti-rotation portion of Patent Document 3 is configured to ensure that the bridge breaks when the container is opened by abutting against the undercut portion through circumferential displacement, and does not take into consideration unintended bridge breakage when the container is not opened.

The present invention was made in consideration of the above circumstances, and aims to provide a capped spout, spout, and container in which the bridge portion is unlikely to break even if an external force is applied during transportation, storage, etc. of the container.

The inventors have studied the circumstances under which the bridge portion breaks during transport, storage, etc. of the container, and have found that the ring portion may deform in the radial direction of the spout, and that, for example, the ring portion, which is circular in plan view, may become elliptical. Furthermore, the inventors have found that if a bridge portion is present in a location where deformation of the ring portion is large, the bridge portion may expand or contract, causing the bridge portion to break. Thus, after extensive study, the inventors have found that unintended breakage of the bridge portion can be prevented by suppressing deformation of the ring portion, and have completed the present invention.

To solve the above problem, the present invention provides a capped spout having a spout with a cylindrical mouth and a cap attached to the mouth, the cap comprising a cap body that seals the mouth, a ring portion disposed on the outer periphery of the mouth from the base end of the cap body via a gap, and a bridge portion that connects the base end of the cap body and the ring portion, the spout has a plurality of abutment portions on the outer periphery of the mouth that protrude toward the inner periphery of the ring portion in the region where the ring portion overlaps with the mouth, and the interval at which the plurality of abutment portions are disposed in the circumferential direction of the mouth is 10 to 120° as a central angle in a plane perpendicular to the axial direction of the mouth.

The cap may have an engagement portion on the inner circumference of the ring portion that protrudes toward the outer circumference of the mouth portion, and the spout may have a flange portion on the outer circumference of the mouth portion with which the engagement portion engages at the intervals where the multiple abutment portions are arranged.
The spout may have a base portion on the base end side of the mouth portion to which a container portion for containing contents is joined.
The mouth portion may have a threaded portion that threadably engages with the cap body.

The present invention also provides a spout having a cylindrical mouth to which a cap is attached, the cap comprising a cap body that seals the mouth, a ring portion disposed on the outer periphery of the mouth from the base end of the cap body via a gap, and a bridge portion that connects the base end of the cap body and the ring portion, the spout having a plurality of abutment portions on the outer periphery of the mouth that protrude toward the inner periphery of the ring portion in a region where the ring portion overlaps with the mouth, the spout providing an interval at which the plurality of abutment portions are disposed in the circumferential direction of the mouth being 10 to 120° as a central angle in a plane perpendicular to the axial direction of the mouth.

The present invention also provides a container comprising a storage section for storing contents and the above-mentioned capped spout.
The present invention also provides a container comprising a storage section for storing contents and the spout.

According to the present invention, even if the ring portion deforms inward, multiple abutment portions arranged on the outer periphery of the spout mouth abut against the inner periphery of the ring portion, so deformation of the ring portion due to external forces can be suppressed. This makes it possible to suppress breakage of the bridge portion even if an external force is applied during transportation, storage, etc. of the container.

FIG. 2 is a front view illustrating a separated state of the capped spout of the embodiment. FIG. 2 is a front view illustrating an example of an attached state of the capped spout of the embodiment. 3 is a cross-sectional view taken along line III-III in FIG. 2.

The present invention will be described below based on a preferred embodiment with reference to the drawings.

Figures 1 to 3 show examples of a capped spout according to an embodiment. Figure 1 shows a capped spout 30 in a separated state in which the cap 20 has been separated from the spout 10. Figure 2 shows a capped spout 30 in an attached state in which the cap 20 has been attached to the spout 10. Figure 3 is a cross-sectional view across the area where the ring portion 24 of the cap 20 overlaps with the mouth portion 12 of the spout 10 in the attached state shown in Figure 2.

As shown in FIG. 1, the capped spout 30 has a spout 10 with a mouth 12, and a cap 20 that is attached to the outer circumference of the mouth 12. The mouth 12 is cylindrical, and a flow path 12b (see FIG. 3) opens at the tip 12a. When the cap 20 is opened, the spout 10 is capable of pouring out the contents from the tip 12a of the mouth 12 through the flow path 12b in the mouth 12.

In this specification, the tip side refers to the side of the spout 10 where the flow path 12b of the mouth 12 is open. The base side refers to the side opposite the tip side in the direction along the central axis of the mouth 12, which is closer to the container in which the contents are stored. In the following description, the radial direction and circumferential direction relative to the central axis of the mouth 12 may be simply referred to as the radial direction and circumferential direction, respectively. In other words, the radial direction is the direction perpendicular to the central axis of the mouth 12. The circumferential direction is the direction surrounding the central axis of the mouth 12. The direction along the central axis of the mouth 12 may be referred to as the axial direction. The cross-sectional view in Figure 3 shows a plane perpendicular to the axial direction of the mouth 12.

The spout 10 can be formed into a container by joining the base 11 to a main container (not shown) such as a pouch container or a tube container. In the case of a molded container such as a bottle container, the spout 10 including the base 11 and the mouth 12 may be integrated as part of the molded container. The base 11 is disposed on the base end side of the mouth 12. The container joined to the base 11 has a storage section that stores the contents. The main container may have a bottom that can stand on its own. When the bottom is downward, the direction in which the spout 10 protrudes from the storage section is not particularly limited, and examples of such direction include upward, diagonally upward, sideways, and downward. The main container may have two or more spouts 10.

The capped spout 30 of the embodiment can be used to form a container in which the cap 20 is attached to the spout 10. The spout 10 of the embodiment can also be used to form a container in which a storage section for storing contents is integrated with the spout 10. A container with a cap 20 may be formed by integrating a storage section with the capped spout 30, or a container with a cap 20 may be formed by attaching the cap 20 to the spout 10 of a container having a spout 10 and a storage section.

When the base 11 is joined to the main container, it is preferable that at least the base 11 of the spout 10 is made of a material that can be joined to the main container using heat sealing, adhesives, etc. At least the outer surface of the spout 10 and at least the inner surface of the main container may be made of a heat-sealable thermoplastic resin such as polyolefin.

Materials for forming molded containers such as the spout 10, cap 20, or bottle container include various synthetic resins such as thermoplastic resins and thermosetting resins. Synthetic resins are preferred as molding materials for the spout 10 and cap 20 because they are capable of moderate elastic deformation. Containers such as pouch containers, tube containers, and bottle containers may include a layer made of a material other than resin, such as metal, paper, inorganic compounds, or organic compounds.

When joining the base 11 to a pouch container (not shown), pouch members such as films and sheets may be joined from both sides of the base 11 with the mouth 12 in between. In this case, the portion where the pouch members are joined via the base 11 is adjacent to the portion where the pouch members are directly joined to each other. It is preferable that the shape of the base 11 is such that the width gradually narrows toward the portion where the pouch members are directly joined to each other. For example, in a cross section perpendicular to the central axis of the mouth 12, the shape may be a boat shape that narrows in two opposing directions.

Alternatively, a through hole may be formed in one of the pouch members, the mouth portion 12 may be inserted into the through hole, and the outer periphery of the base portion 11 may be joined to the pouch member surrounding the through hole. In this case, the base portion 11 may have a shape similar to that of the flange portion 13. The shape of the outer periphery of the base portion 11 may be a shape similar to the cross-sectional shape of the mouth portion 12 or the planar shape of the through hole, for example, a circle, an ellipse, a polygon, etc.

A flange portion 13 is formed on the outer periphery of the mouth portion 12, in the intermediate portion between the tip portion 12a of the mouth portion 12 and the base portion 11. The outer periphery of the mouth portion 12 is the side having an outer surface facing the flow path 12b via the cylindrical wall portion constituting the mouth portion 12. The side of the mouth portion 12 facing the flow path 12b is the inner periphery of the mouth portion 12. The flange portion 13 may be formed in at least a portion of the circumferential direction of the mouth portion 12. In the spout 10 of the illustrated example, the flange portion 13 is formed continuously in the circumferential direction around the entire outer periphery of the mouth portion 12.

Between the tip 12a of the mouth portion 12 and the flange portion 13, a threaded portion 14 is formed that protrudes in a spiral shape from the outer periphery of the mouth portion 12. The threaded portion 14 is used to attach a cap 20 to the mouth portion 12. The threads that make up the threaded portion 14 may have a broken portion in the circumferential direction, or may be continuous in the circumferential direction. The length of the threaded portion 14 along the circumferential direction is not particularly limited, and may be less than one revolution (360°) of the mouth portion 12, or may be one or more revolutions.

The cap 20 has a cap body 21 that seals the mouth 12, and a ring portion 24 disposed via a gap 23 from the base end 22 of the cap body 21. The cap body 21 has a top portion 21a that covers the tip end 12a of the mouth 12, and a tube portion 21b that covers the outer periphery of the mouth 12. The base end 22 of the cap body 21 is the end of the tube portion 21b that is farther away from the top portion 21a in the axial direction.

The cap body 21 has a bottom with the tip side of the tubular portion 21b closed by the top portion 21a. Although not shown, a seal portion that adheres closely to the periphery of the opening of the tip portion 12a, a convex portion that fits into the opening of the tip portion 12a, etc. may be arranged on the side of the top portion 21a facing the tip portion 12a of the mouth portion 12. The base end side of the tubular portion 21b of the cap body 21 is opened to receive the mouth portion 12. Although not shown, a thread groove that screws into the thread portion 14 of the mouth portion 12 is formed on the inner surface of the tubular portion 21b. The cap 20 can be attached to the spout 10 by screwing the thread portion 14 into the thread groove of the tubular portion 21b.

The cap 20 has a structure for realizing a tamper-proof function (tamper evidence, pilfer proof). The tamper-proof structure 29 shown in FIG. 2 has a ring portion 24 arranged on the outer periphery of the mouth portion 12 at the base end side of the cap body 21. The ring portion 24 may be formed in at least a portion of the circumferential direction of the mouth portion 12. In the cap 20 shown in the figure, the ring portion 24 is formed continuously in the circumferential direction on the outer periphery of the mouth portion 12, over the entire circumference of the mouth portion 12.

The base end 22 of the cap body 21 and the ring portion 24 are connected via a bridge portion 26. The bridge portion 26 is disposed at a distance from one another in a circumferential direction of the ring portion 24. The cap body 21, the ring portion 24, and the bridge portion 26 can each be formed from different materials. In the illustrated example of the cap 20, the cap body 21, the ring portion 24, and the bridge portion 26 can be integrally formed from the same material.

The bridge portion 26 can be broken when the gap 23 between the base end portion 22 and the ring portion 24 is enlarged. In addition, an engagement portion 25 (see FIG. 3) that protrudes toward the outer periphery of the mouth portion 12 is formed on the inner circumference of the ring portion 24. The engagement portion 25 is a protrusion formed on at least a part of the circumference of the ring portion 24. FIG. 3 shows an example in which the engagement portions 25 formed at two places in the circumference of the ring portion 24 are arranged at the interval between the abutment portions 15a and 15b described later. The number, arrangement, shape, etc. of the engagement portions 25 can be set arbitrarily. When multiple engagement portions 25 are arranged in the circumference of the ring portion 24, the engagement portions 25 may be arranged at equal intervals or unequal intervals.

When attaching the cap 20 to the spout 10, the cap 20 can be displaced from the tip side to the base end side of the spout 10. The threaded portion 14 can be used to displace the cap 20 relative to the spout 10. The engagement portion 25 engages with the flange portion 13 from the base end side of the flange portion 13, completing the attachment of the cap 20 to the spout 10.

The flange portion 13 may have an inclined surface 13a so that the engagement portion 25 can easily climb over the flange portion 13 when the cap 20 is displaced in the axial direction from the tip end side to the base end side. This inclined surface 13a is formed on the side of the flange portion 13 facing the tip portion 12a side of the mouth portion 12. The elastic deformation acting on the ring portion 24 when the engagement portion 25 climbs over the flange portion 13 is set to a degree that does not break the bridge portion 26.

The engagement portion 25 engages with the flange portion 13, preventing the ring portion 24 from being displaced toward the tip of the mouth portion 12. Therefore, when the cap body 21 is displaced toward the tip of the mouth portion 12 along the threaded portion 14 after the engagement portion 25 engages with the flange portion 13, the bridge portion 26 is broken. An example of an action by the consumer to open the cap 20 is to grasp the outer periphery of the cap 20 and rotate it relative to the spout 10.

If the bridge portion 26 is not broken, it is easy to visually confirm from the outside of the capped spout 30 that the cap 20 has never been opened. Furthermore, if the cap 20 is opened even once, the bridge portion 26 is broken. It is possible to close the cap 20 again with the bridge portion 26 broken, but the bridge portion 26 will not return to a connected state.

Therefore, if the bridge portion 26 is broken, it is easy to visually confirm from the outside of the capped spout 30 that the cap 20 has been opened. After opening, the ring portion 24 is separated from the base end 22 of the cap body 21. Furthermore, when the engagement by the engagement portion 25 is released, the ring portion 24 may fall off from the flange portion 13 toward the base end. This makes it easier to confirm that the bridge portion 26 has been broken after opening.

The tamper-proof structure 29 has a protrusion 28 that protrudes toward the base end 22 of the cap body 21 at the tip side of the ring portion 24. The protrusion 28 has a slope 28a on one circumferential side. The base end 22 of the cap body 21 has a recess 27 at a position corresponding to the protrusion 28. The slope 28a of the protrusion 28 is positioned on the side that comes into contact with the recess 27 depending on the direction of rotation of the screw portion 14 when the cap 20 is opened using the screw portion 14.

When a weak external force acts on the cap 20, for example when the caps 20 come into contact with each other unintentionally, the convex portion 28 prevents unnecessary rotation, suppressing breakage of the bridge portion 26. When a strong external force acts on the cap 20, for example when a user rotates the cap 20 with the intention of opening it, the concave portion 27 is able to slide along the slope 28a, and when the base end portion 22 of the cap body 21 passes over the convex portion 28, the axial gap 23 expands significantly, and the bridge portion 26 is reliably broken.

When a container in which the spout 10 is sealed with the cap 20 is transported, stored, etc., it is necessary to prevent the ring portion 24 from breaking even if an external force acts on the outside of the cap 20. For example, when an external force acts on the cap 20 at the cap body 21, the cap body 21 is screwed into the mouth portion 12 by the threaded portion 14, so the elastic deformation of the tube portion 21b is considered to be relatively small. For example, when an external force acts in a concentrated manner on the ring portion 24 of the cap 20, the elastic deformation of the ring portion 24 may be large depending on the position at which the external force acts.

The spout 10 of the embodiment has multiple abutment portions 15a, 15b, and 15c on the outer periphery of the mouth portion 12 in the region where the ring portion 24 overlaps with the mouth portion 12. As shown in FIG. 3, the abutment portions 15a, 15b, and 15c protrude toward the inner periphery of the ring portion 24. The number, arrangement, shape, etc. of the abutment portions 15a, 15b, and 15c can be set arbitrarily. The arrangement of the abutment portions 15a, 15b, and 15c in the circumferential direction of the mouth portion 12 may be equally spaced or unequal.

The shapes of the abutment portions 15a, 15b, and 15c are not particularly limited, but examples include convex shapes such as rib-shaped, boss-shaped, pin-shaped, column-shaped, plate-shaped, rod-shaped, piece-shaped, ring-shaped, ear-shaped, and claw-shaped. The shapes of the abutment portions 15a, 15b, and 15c may be the same as each other or may be different from each other.

The spout 10 in the illustrated example has three types of butt portions 15a, 15b, and 15c, two of each type, each having a different shape. As shown in FIG. 3, the butt portions 15a, 15b, and 15c of substantially the same shape are given the same reference numerals. As shown in FIG. 1, the lengths of the butt portions 15a, 15b, and 15c along the axial direction may be substantially the same or may be different from each other. In the illustrated example, the butt portions 15a and 15b are formed longer than the butt portion 15c. When opened or after falling off the flange portion 13, the ring portion 24 may come into contact with the base end side of the butt portions 15a and 15b to prevent rotation.

In the case of the spout 10 shown in the figure, the multiple abutment portions 15a, 15b, and 15c are arranged as follows. The abutment portions 15a, which are in approximate contact with the inner circumference of the ring portion 24, are arranged at two locations that are approximately 180° apart in the circumferential direction of the mouth portion 12. In addition, the abutment portions 15b, whose protruding tips are slightly spaced from the inner circumference of the ring portion 24 at positions close to the abutment portions 15a, are arranged at two locations that are approximately 180° apart in the circumferential direction of the mouth portion 12. Furthermore, the abutment portions 15c, whose protruding tips are slightly spaced from the inner circumference of the ring portion 24, are arranged at two locations that are approximately 180° apart in the circumferential direction of the mouth portion 12, spaced at an interval of approximately 90° from the abutment portions 15a.

The protruding tips of the abutting parts 15a, 15b, and 15c refer to the tips of the abutting parts 15a, 15b, and 15c at the position radially farthest from the outer periphery of the mouth part 12. The size of the gap between the protruding tips of the abutting parts 15a, 15b, and 15c and the inner periphery of the ring part 24 can be, for example, about 0.0 mm to 0.3 mm, or about 0.1 mm to 0.2 mm.

By arranging the multiple abutment portions 15a, 15b, and 15c at appropriate intervals, even if an external force acts on the ring portion 24, the ring portion 24 is less likely to deform in the radial direction of the mouth portion 12. As a result, regardless of the position where the external force acts on the ring portion 24, it is possible to suppress expansion/contraction and breakage of the bridge portion 26 caused by deformation of the ring portion 24. The interval between the abutment portions 15a, 15b, and 15c in the circumferential direction is the central angle in a plane perpendicular to the axial direction.

The interval at which the abutment portions 15a, 15b, and 15c are arranged in the circumferential direction of the mouth portion 12 is preferably 120° or less in the circumferential direction, and is preferably within the range of 10 to 120°. Specific examples of these angles include, but are not limited to, 10°, 15°, 20°, 30°, 45°, 60°, 75°, 90°, 100°, and 120°, as well as values close to or intermediate between these.

The size that one of the protruding tips of the abutting parts 15a, 15b, 15c occupies in the circumferential direction of the mouth part 12 is not particularly limited and can be set appropriately. When the abutting parts 15a, 15b, 15c are formed in the shape of a thin rib, the size that the protruding tip occupies in the circumferential direction may be, for example, about 1 to 5° as a central angle in a plane perpendicular to the axial direction. It is preferable that the abutting parts 15a, 15b, 15c are arranged in three or more or four or more locations in the circumferential direction of the mouth part 12. When the size that the protruding tip occupies in the circumferential direction is made larger, it is also possible to reduce the number of abutting parts 15a, 15b, 15c arranged in the circumferential direction.

As described above, when the engagement portion 25 that engages with the flange portion 13 is disposed on the inner circumference of the ring portion 24, it is preferable that the arrangement of the abutment portions 15a, 15b, and 15c does not interfere with the engagement portion 25 with the flange portion 13. In other words, it is preferable that the engagement portion 25 engages with the flange portion 13 at the intervals at which the multiple abutment portions 15a, 15b, and 15c are disposed.

As shown in FIG. 3, when the base 11 is boat-shaped, the spacing between the abutment portions 15a, 15b, and 15c may be different in the direction in which the diameter of the boat-shaped base 11 is larger (left-right direction in FIG. 3) and the direction in which the diameter of the boat-shaped base 11 is smaller (up-down direction in FIG. 3). In the illustrated example, the diameter of the base 11 is larger than the diameter of the ring portion 24 in the direction in which the diameter of the base 11 is larger, and the diameter of the base 11 is smaller than the diameter of the ring portion 24 in the direction in which the diameter of the base 11 is smaller.

In the direction in which the diameter of the boat-shaped base 11 is small, the factor that causes an external force to act on the ring portion 24 is less likely to interfere with the base 11 or the container joined to the base 11. As a result, it is considered that an external force is more likely to act on the ring portion 24 from that direction. In order to improve the durability of the abutment portions 15a and 15b against external forces, it is preferable to narrow the gap between adjacent abutment portions 15a and 15b. In addition, the thickness (dimension along the circumferential direction) or length (dimension along the axial direction) of the abutment portions 15a and 15b may be made larger.

In the direction in which the diameter of the boat-shaped base 11 is large, the factor that causes an external force to act on the ring portion 24 is likely to interfere with the base 11 or the container joined to the base 11. For this reason, if an external force acts on the base 11 or the container before acting on the ring portion 24, it is considered that the external force is less likely to act on the ring portion 24. However, in order to prevent an external force from acting on the ring portion 24 in areas where the spacing between the abutment portions 15a, 15b is wide, it is preferable to arrange the abutment portion 15c also in the direction in which the diameter of the boat-shaped base 11 is large.

The direction in which the butt portions 15a, 15b, and 15c protrude from the outer periphery of the mouth portion 12 is not particularly limited, and for example, the butt portions 15a, 15b, and 15c may protrude radially along the radial direction of the mouth portion 12. The protruding direction of the butt portions 15a, 15b, and 15c may also be inclined from the radial direction of the mouth portion 12. For example, in the illustrated example, the butt portions 15a and 15b arranged in the direction in which the diameter of the boat-shaped base portion 11 is small may be formed approximately parallel to each other. When the butt portions 15a, 15b, and 15c are not radial, the central angle corresponding to the interval between them may be the angle formed by the line segment connecting the position of the central axis of the mouth portion 12 and the position of the protruding tip of the butt portions 15a, 15b, and 15c in a plane perpendicular to the axial direction.

Even in the case of a bottle container in which the spout 10 is integrated with the main container, the cross-sectional shape of the main container in a plane perpendicular to the axial direction may be flat. In this case, as in the case where the spout 10 has a boat-shaped base 11, the spacing between the abutting parts may be different in the direction in which the diameter of the cross-sectional shape of the main container is large and in the direction in which the diameter is small. It is preferable to narrow the spacing between adjacent abutting parts in the direction in which the diameter of the cross-sectional shape of the main container is small. It is also preferable to arrange abutting parts in the direction in which the diameter of the cross-sectional shape of the main container is large.

The diameter of the base 11, main container, etc. in a plane perpendicular to the axial direction is not limited to cases where the cross-sectional shape of the base 11, main container, etc. is circular, but can be defined even if the cross-sectional shape is an irregular shape such as an ellipse, rectangle, polygon, etc. For example, the diameter can be defined as the distance between two points where a straight line passing through the position of the central axis of the mouth 12 (center position) intersects with the contour line of the outer surface of the cross-sectional shape in a plane perpendicular to the axial direction.

As with the diameters of the base 11, main container, etc., the diameter of the ring portion 24 is not limited to the case where the cross-sectional shape of the ring portion 24 in a plane perpendicular to the axial direction is circular, but can be defined even if the cross-sectional shape is an irregular shape such as an ellipse, rectangle, or polygon. The diameter of the ring portion 24 is not particularly limited, but the maximum or minimum diameter may be, for example, about 5 to 100 mm, or even about 10 to 30 mm. Note that when the cross-sectional shape of the ring portion 24, etc. is elliptical, the maximum diameter corresponds to the major axis and the minimum diameter corresponds to the minor axis, and when the cross-sectional shape is rectangular, the maximum diameter corresponds to the length of the major side or diagonal and the minimum diameter corresponds to the length of the minor side.

In the illustrated example, as described above, the engagement portion 25 is disposed at the interval between the butt portions 15a and 15b. The butt portions 15a and 15b have a slope 16 (see FIG. 1) on one side in the circumferential direction. The slope 16 is disposed on the side where the engagement portion 25 contacts the butt portions 15a and 15b according to the rotation direction of the screw portion 14 when the cap 20 is attached to the spout 10 using the screw portion 14. Therefore, when the cap 20 is attached to the spout 10, the engagement portion 25 can overcome the butt portion 15a. The direction in which the butt portion 15b protrudes from the outer periphery of the mouth portion 12 is opposite to the rotation direction (clockwise direction in FIG. 3) when the cap 20 is attached to the spout 10. In other words, the protruding tip of the butt portion 15b is located in the counterclockwise direction in FIG. 3 with respect to the position where the butt portion 15b is connected to the outer periphery of the mouth portion 12. Therefore, when attaching the cap 20 to the spout 10, the engagement portion 25 is less likely to climb over the abutment portion 15b. Also, when opening the cap 20, the abutment portions 15a and 15b prevent the engagement portion 25 from rotating, so that the abutment portions 15a and 15b function as a rotation stopper for the ring portion 24.

The nature of the contents poured out of the spout 10 is not particularly limited and may be any of liquid, solid, powder, granules, and mixtures of two or more of these. The type of contents is not particularly limited and may include beverages, food products, seasonings, cosmetics, medicines, detergents, adhesives, household goods, industrial products, etc.

The present invention has been described above based on a preferred embodiment, but the present invention is not limited to the above embodiment, and various modifications are possible without departing from the gist of the present invention. Modifications include the addition, substitution, omission, and other changes to components in the embodiment.

In the above embodiment, when opening and closing the cap 20, the displacement of the cap 20 relative to the spout 10 is a rotational movement using the screw portion 14, but the present invention is not limited to rotational movement. Any movement of the cap relative to the spout in an appropriate direction may be generated, such as a rotational movement via a hinge or the like, or a translational movement using elastic deformation or the like. In either case, when the cap body 21 is removed to release the seal on the mouth portion 12, the ring portion 24 does not follow the displacement of the cap body 21, and the bridge portion 26 breaks, allowing the tamper-proof structure 29 to function.

10...spout, 11...base, 12...mouth, 12a...tip of mouth, 12b...flow path, 13...flange, 13a...inclined surface of flange, 14...threaded portion, 15a, 15b, 15c...butt portion, 16...inclined surface of butt portion, 20...cap, 21...cap body, 21a...top portion, 21b...tubular portion, 22...base end of cap body, 23...gap, 24...ring portion, 25...engagement portion, 26...bridge portion, 27...recess, 28...projection, 28a...inclined surface of projection, 29...tamper-proof structure, 30...spout with cap.

Claims (6)

A spout with a cap having a spout with a cylindrical mouth and a cap attached to the mouth,
The cap includes a cap body that seals the mouth portion, a ring portion that is disposed on the outer circumferential side of the mouth portion from a base end portion of the cap body via a gap, and a bridge portion that connects between the base end portion of the cap body and the ring portion,
The spout has a plurality of butt portions on the outer periphery of the mouth portion in a region where the ring portion overlaps the mouth portion, the butt portions protruding toward the inner periphery of the ring portion, and the intervals at which the plurality of butt portions are arranged in the circumferential direction of the mouth portion are 10 to 120° as a central angle in a plane perpendicular to the axial direction of the mouth portion,
The spout has a base portion to which a storage portion for storing contents is joined on a base end side of the mouth portion,
The plurality of abutting portions each include two first abutting portions, two second abutting portions, and two third abutting portions,
the first abutment portion is disposed at two locations that are spaced apart by approximately 180° in the circumferential direction of the mouth portion, the second abutment portion is disposed at two locations that are spaced apart by approximately 180° in the circumferential direction of the mouth portion in a position close to the first abutment portion, and the third abutment portion is disposed at two locations that are spaced apart by approximately 180° in the circumferential direction of the mouth portion, with an interval of approximately 90° from the first abutment portion;
the base portion has a direction in which the diameter of the base portion is larger and a direction in which the diameter of the base portion is smaller in a plane perpendicular to the axial direction,
The first abutting portion and the second abutting portion are disposed in a direction in which a diameter of the base portion is smaller,
A spout with a cap , wherein the third abutment portion is arranged in a direction in which the diameter of the base portion is larger. the cap has an engagement portion on an inner periphery of the ring portion, the engagement portion protruding toward an outer periphery of the mouth portion,
The spout with a cap according to claim 1, characterized in that the spout has a flange portion on an outer periphery of the mouth portion with which the engaging portion engages at intervals at which the plurality of abutment portions are arranged. 3. The capped spout according to claim 1, wherein the mouth portion has a threaded portion that screws into the cap body. A spout having a cylindrical mouth to which a cap is attached,
The cap includes a cap body that seals the mouth portion, a ring portion that is disposed on the outer circumferential side of the mouth portion from a base end portion of the cap body via a gap, and a bridge portion that connects between the base end portion of the cap body and the ring portion,
The spout has a plurality of butt portions on the outer periphery of the mouth portion in a region where the ring portion overlaps the mouth portion, the butt portions protruding toward the inner periphery of the ring portion, and the intervals at which the plurality of butt portions are arranged in the circumferential direction of the mouth portion are 10 to 120° as a central angle in a plane perpendicular to the axial direction of the mouth portion,
The spout has a base portion to which a storage portion for storing contents is joined on a base end side of the mouth portion,
The plurality of abutting portions each include two first abutting portions, two second abutting portions, and two third abutting portions,
the first abutment portion is disposed at two locations that are spaced apart by approximately 180° in the circumferential direction of the mouth portion, the second abutment portion is disposed at two locations that are spaced apart by approximately 180° in the circumferential direction of the mouth portion in a position close to the first abutment portion, and the third abutment portion is disposed at two locations that are spaced apart by approximately 180° in the circumferential direction of the mouth portion, with an interval of approximately 90° from the first abutment portion;
the base portion has a direction in which the diameter of the base portion is larger and a direction in which the diameter of the base portion is smaller in a plane perpendicular to the axial direction,
The first abutting portion and the second abutting portion are disposed in a direction in which a diameter of the base portion is smaller,
The spout is characterized in that the third abutment portion is disposed in a direction in which the diameter of the base portion is larger . A container comprising a storage section for storing contents and the capped spout according to any one of claims 1 to 3 . A container comprising a container portion for accommodating a content and the spout according to claim 4 .

Images