cap

Abstract

To provide a cap inhibiting contents from attaching to a guide surface.SOLUTION: A cap 1 is to discharge contents from an inner cavity of a container 35, the cap 1 comprising a hole formation part 8 forming a hole in communication with the inner cavity of the container 35; a guide port 6 having a guide surface 18 with water-repellency guiding the contents to the hole formation part 8 and an outer peripheral surface 20 continuing to an outer peripheral edge of the guide surface 18; and an open / close lid 3 provided with a sealing cylinder closely attached on the outer peripheral surface 20 of the guide port 6 upon closing.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cap. [Background technology]

[0002] A known cap is used to discharge contents from the internal space of a container, and includes a hole forming portion that forms a hole that communicates with the internal space of the container, a guide opening portion that has a guide surface that guides the contents to the hole forming portion and an outer peripheral surface that is continuous with the outer edge of the guide surface, and an opening / closing lid that tightly fits into the guide opening portion when closed (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-172397 Summary of the Invention [Problem to be solved by the invention]

[0004] It is desirable that the cap described above is such that the contents do not easily adhere to the guide surface.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a cap that prevents the contents from adhering to the guide surface. [Means for solving the problem]

[0006] The cap of the present invention is a cap for discharging contents from an internal space of a container, and includes a hole forming portion for forming a hole communicating with the internal space of the container, a water-repellent guide surface for guiding the contents to the hole forming portion, and a water-repellent guide surface extending from an outer periphery of the guide surface. From the outside of the container Inside the container In the direction The cap has a guide opening portion having an extending outer peripheral surface, and an opening / closing lid provided with a sealing cylinder that tightly contacts the outer peripheral surface of the guide opening portion when closed.

[0007] In the above-described configuration, the cap of the present invention preferably has a lip portion that protrudes outside the container between the hole forming portion and the outer peripheral edge of the guide surface and allows the contents to flow out.

[0008] In the cap of the present invention having the above-described configuration, the lip portion is preferably provided along the hole forming portion.

[0009] In the cap of the present invention having the above-mentioned configuration, the lip portion preferably has a trough-shaped portion.

[0010] In the cap of the present invention having the above-described configuration, it is preferable that the hole forming portion has a tapered portion that narrows radially outward from the guide opening portion, and the trough-shaped portion is provided along the tapered portion.

[0011] In the above configuration, the cap of the present invention is preferably a cap having a removable portion that includes a plug body connected to the hole forming portion around its entire circumference via a breakable portion, and a pull ring connected to the outer surface of the plug body.

[0012] In the cap of the present invention having the above-described configuration, it is preferable that the guide surface has a diameter that decreases toward the inside of the container up to the hole forming portion. [Effects of the Invention]

[0013] According to the present invention, it is possible to provide a cap in which the contents are less likely to adhere to the guide surface. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 2 is a vertical cross-sectional view of the cap according to the embodiment of the present invention when closed. [Figure 2] FIG. 2 is a top view of the cap shown in FIG. 1 when opened. [Figure 3] FIG. 2 is a bottom view of the cap shown in FIG. 1 when opened. [Figure 4] 3 is a cross-sectional view taken along the line AA in FIG. 2. [Figure 5] 5 is a cross-sectional view of FIG. 4 taken along line B-B. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0016] As shown in FIGS. 1 to 5 , a cap 1 according to one embodiment of the present invention has a main body 2 and an open / close lid 3. The main body 2 has an attachment portion 4, a fitting portion 5, a guide opening portion 6, a lip portion 7, a hole-forming portion 8, and a removable portion 9. The attachment portion 4 has an outer tube 10, an inner tube 11, and an upper wall 12. The outer tube 10 has an outer tube 13, an inner tube 14, and a lower connecting portion 15. The lower connecting portion 15 has a front-end connecting portion 16 and a weakened connecting portion 17. The guide opening portion 6 has a guide wall 19 forming a guide surface 18 and an outer peripheral wall 21 forming an outer peripheral surface 20 of the guide opening portion 6. The lip portion 7 has a trough-shaped portion 22, more specifically, configured as a trough-shaped portion 22. The hole-forming portion 8 has tapered portions 23 on the front and rear sides. The removable portion 9 has a plug 24 and a pull ring 25. The pull ring 25 has a ring portion 26 and a column portion 27. The stopper body 24 is connected to the hole forming portion 8 around its entire circumference via a breakable portion 28. The opening / closing lid 3 has a peripheral wall 29, a top wall 30, and a sealing tube 31. The peripheral wall 29 has a fitting portion 32 and a finger hook portion 33, and is connected to the outer tube 13 via a hinge portion 34.

[0017] For ease of explanation, the direction along the central axis O when the lid is closed is also referred to as the up-down direction, the direction toward the outside of the container along the central axis O is also referred to as the upward direction, the opposite direction is also referred to as the downward direction, the side on which the hinge portion 34 is located when viewed from the central axis O is also referred to as the rear side, and the opposite side is also referred to as the front side, the direction along a straight line perpendicular to the central axis O is also referred to as the radial direction, the direction circumferentially around the central axis O is also referred to as the circumferential direction, and a cross section including the central axis O is also referred to as a longitudinal cross section.

[0018] The cap 1 is attached to the mouth 36 of the container 35 at the attachment portion 4 to form a capped container 37. The capped container 37 is opened by removing the portion to be removed 9, and the contents can be discharged from the internal space of the container 35 through the cap 1 by tilting the container 35 with the opening / closing lid 3 open (lid open state).

[0019] The cap 1 is an integrally molded product formed by injection molding of resin. The resin from which the cap 1 is formed is not particularly limited, and examples thereof include polyolefins such as polypropylene and polyethylene, and polyesters such as polyethylene terephthalate. The manufacturing method of the cap 1 is not limited to injection molding, and the cap may be integrally molded by a manufacturing method other than injection molding. The cap 1 may also be formed by assembling multiple components.

[0020] The container 35 has a cylindrical mouth 36 centered on the central axis O, a body connected to the lower end of the mouth 36, and a bottom connected to the lower end of the body. The mouth 36 may have a tubular shape other than a cylindrical shape, such as a rectangular tubular shape. The material and manufacturing method of the container 35 are not particularly limited.

[0021] A liquid content is contained in the internal space of the container 35. The type of content is not particularly limited, and may be, for example, food, medicine, cosmetics, or the like.

[0022] The upper end of the inner tube 14 of the outer tube 10 is connected via an upper wall 12 to the upper end of the inner tube 11, which is located radially inward from the outer tube 10. When the mouth portion 36 is inserted between the outer tube 10 and the inner tube 11, the inner tube 11 comes into contact with the inner surface of the mouth portion 36, and the inner tube 14 is engaged with the outer surface of the mouth portion 36 so that relative upward movement is restricted, and as a result, the attachment portion 4 is attached to the mouth portion 36.

[0023] The lower end of the inner circumferential cylinder 14 is connected via a lower connecting portion 15 to the lower end of the outer circumferential cylinder 13, which is located radially outward from the inner circumferential cylinder 14. The lower connecting portion 15 has a front end connecting portion 16 that connects the inner circumferential cylinder 14 and the outer circumferential cylinder 13 at their front ends, and a weakened connecting portion 17 that is located rearward of the front end connecting portion 16 and is weaker in strength than the front end connecting portion 16 and can be easily broken. The weakened connecting portion 17 consists of connecting pieces that are located intermittently in the circumferential direction.

[0024] The upper end of the outer peripheral surface of the outer cylinder 13 is rotatably connected to the lower end of the outer peripheral surface of the peripheral wall 29 of the opening / closing lid 3 via a hinge portion 34. The peripheral wall 29 is tubular and has a center on a central axis O. The lower part of the inner peripheral surface of the peripheral wall 29 has a fitted portion 32 that is releasably fitted into the fitting portion 5 when the opening / closing lid 3 is closed (when closed). The fitting portion 5 is tubular and has a center on the central axis O, and protrudes upward from the upper wall 12.

[0025] The top wall 30 extends radially inward from the upper end of the peripheral wall 29 and closes the upper end of the peripheral wall 29. The sealing cylinder 31 is tubular and extends downward from the top wall 30. A finger hook 33 protrudes from the outer circumferential surface of the lower end of the front end of the peripheral wall 29. A user can open and close the opening-closing lid 3 by hooking their finger on the finger hook 33.

[0026] When the capped container 37 is disposed of, the opening and closing lid 3 is held and pulled up in the open state, whereby the weakened connection part 17 is broken, the cap 1 can be easily removed from the opening part 36, and the container 35 and the cap 1 can be separated.

[0027] The outer peripheral wall 21 of the guide port portion 6 is cylindrical and centered on the central axis O, and the lower end of the outer peripheral wall 21 is continuous with the upper end of the inner peripheral edge of the mounting portion 4. The guide wall 19 is concave and recessed downward, and the outer peripheral edge of the guide wall 19 is continuous with the upper end of the outer peripheral wall 21, and the outer peripheral surface 20 of the guide port portion 6 is continuous with the outer peripheral edge of the guide surface 18. The upper end of the outer peripheral surface 20 of the guide port portion 6 comes into close contact with the lower end of the inner peripheral surface of the sealing cylinder 31 when the lid is closed. Note that the guide port portion 6 and the sealing cylinder 31 are not limited to being configured coaxially with respect to the central axis O, and may be configured to be eccentric with respect to the central axis O.

[0028] The hole forming portion 8 forms a hole that communicates with the internal space of the container 35 by removing the portion to be removed 9. In other words, the hole forming portion 8 is the outer peripheral edge of the hole. The hole forming portion 8 (hole) has an elongated, straight shape when viewed from above, and has tapered portions 23 at the front end and rear end, which become thinner radially outward from the guide opening portion 6.

[0029] The portion to be removed 9 has a plug 24 connected to the hole forming portion 8 via a portion to be broken 28 whose thickness is reduced around the entire circumference, and a pull ring 25 connected to the outer surface of the plug 24. The pull ring 25 has a pillar portion 27 that protrudes upward from the outer surface of the plug 24 and a ring portion 26 connected to the pillar portion 27. A user can break the portion to be broken 28 and remove the portion to be removed 9 from the hole forming portion 8 by hooking their finger on the ring portion 26 and pulling it upward, thereby forming a hole. The guide wall 19, the portion to be broken 28, and the plug 24 as a whole form a partition wall with a downward-facing truncated conical surface.

[0030] Lip portion 7 protrudes outward from the container between hole forming portion 8 and the outer periphery of guide surface 18, making it easy to pour the contents. More specifically, lip portion 7 has a gutter-shaped portion 22 provided along tapered portion 23 on the front side of hole forming portion 8. Gutter-shaped portion 22 is a curved plate that bends in a U-shape along tapered portion 23. By tilting container 35 forward in an open state, the contents can be poured out of gutter-shaped portion 22 in a thin stream through the hole. The contents can also be poured out of guide surface 18 by changing the tilting direction of container 35.

[0031] Guide surface 18 has water repellency such that the contact angle with water is greater than 90°. When container 35 is returned to an upright position after the contents are discharged, the contents remaining on guide surface 18, such as dripping from gutter-shaped portion 22, are guided to hole-forming portion 8 and returned to the interior space of container 35 through the hole. The water-repellent properties of guide surface 18 prevent the contents from adhering to guide surface 18. To ensure smooth guidance of the contents, guide surface 18 is preferably configured to taper inward (downward) toward hole-forming portion 8. In this case, guide surface 18 may be configured as a downward-facing cone (a linear shape in vertical cross section) or a concave curved surface such as a concave arc (a curved shape such as a circular arc in vertical cross section). To prevent the contents from adhering, it is also preferable that gutter-shaped portion 22 be water-repellent over its entire surface. The hole-forming portion 8, intended rupture portion 28, and the upper surface of plug 24 do not need to be water-repellent, but may be.

[0032] Water repellency can be achieved by forming a fine uneven structure on the surface, and the method for forming the structure is not particularly limited. The water-repellent fine uneven structure may be formed by transferring the surface shape of a mold used in injection molding, by insert molding using a water-repellent film as an insert material, by coating, or by vapor deposition. In particular, vapor deposition can easily impart water repellency to the guide surface 18 and the trough-shaped portion 22.

[0033] According to this embodiment, the water-repellent surfaces provided on the guide surface 18 and, if necessary, on the gutter-shaped portion 22 can prevent the contents from adhering to the cap 1. Furthermore, as described above, this embodiment is configured such that the sealing sleeve 31 is sealed by being in close contact with the outer circumferential surface 20 of the guide opening portion 6 rather than the guide surface 18, so that sealing can be achieved without destroying the liquid-repellent uneven structure of the guide surface 18. Therefore, the liquid-repellent properties of the guide surface 18 can be well maintained.

[0034] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention.

[0035] Therefore, the cap 1 of the above-described embodiment can be modified as long as it is a cap 1 that discharges the contents from the internal space of the container 35, and has a hole forming portion 8 that forms a hole that communicates with the internal space of the container 35, a guide opening portion 6 that has a water-repellent guide surface 18 that guides the contents to the hole forming portion 8 and an outer peripheral surface 20 that is continuous with the outer edge of the guide surface 18, and an opening / closing lid 3 that comes into tight contact with the outer peripheral surface 20 of the guide opening portion 6 when closed.

[0036] For example, the cap 1 is not limited to a configuration having a portion to be removed 9, and may be configured such that, for example, the hole forming portion 8 has a hole formed therein from the beginning. The shape of the hole forming portion 8 (hole) is not limited to a linear shape in top view, and may be, for example, a cross shape in top view. The lip portion 7 may be configured to have a plurality of trough-shaped portions 22. For example, when the hole forming portion 8 is cross-shaped in top view, a trough-shaped portion 22 may be provided at each of the front and left and right ends. The hole forming portion 8 (hole) is not limited to a configuration having a tapered portion 23, and may be configured to be circular in top view. The lip portion 7 is not limited to a configuration provided along the hole forming portion 8. The opening / closing lid 3 is not limited to a configuration connected to the main body portion 2 via the hinge portion 34, and may be provided separately from the main body portion 2, for example.

[0037] In addition, it is preferable that the cap 1 of the above-mentioned embodiment is a cap 1 having a lip portion 7 that protrudes outside the container between the hole forming portion 8 and the outer peripheral edge of the guide surface 18 and allows the contents to flow out.

[0038] In the cap 1 of the above-described embodiment, it is preferable that the lip portion 7 is provided along the hole forming portion 8 in the above configuration.

[0039] In the cap 1 of the above-described embodiment, it is preferable that the lip portion 7 has a trough-shaped portion 22 in the above configuration.

[0040] In the cap 1 of the above-described embodiment, in the above configuration, it is preferable that the hole forming portion 8 has a tapered portion 23 that narrows radially outward from the guide port portion 6, and the gutter-shaped portion 22 is provided along the tapered portion 23.

[0041] In the above-described embodiment, the cap 1 is preferably a cap 1 having a removable portion 9 in the above configuration, which includes a plug body 24 connected to the hole forming portion 8 around its entire circumference via a breakable portion 28, and a pull ring 25 connected to the outer surface of the plug body 24.

[0042] In the cap 1 of the above-described embodiment, in the above configuration, it is preferable that the guide surface 18 is a cap 1 whose diameter decreases toward the inside of the container up to the hole forming portion 8. [Explanation of symbols]

[0043] 1 cap 2 Main body 3 Opening and closing lid 4. Mounting part 5. Fitting 6 Information entrance 7 Lip 8 Hole forming part 9 Parts to be removed 10 outer cylinder 11 Inner cylinder 12 Upper wall 13 Peripheral cylinder 14 Inner cylinder 15 Lower connection 16 Front end connection part 17 Weakened connection 18 Guide surface 19 Guide Wall 20 Outer surface 21 Outer wall 22 Gutter-shaped part 23 Tapered section 24 Plug body 25 Pull Ring 26 Ring section 27 Pillar section 28 Breaking section 29 Peripheral wall 30 Top Wall 31 Closed Envelope 32 Engaged part 33 Finger rest 34 Hinge part 35 Container 36 Mouth 37 Container with cap O center axis

Claims

1. A cap for discharging contents from an internal space of a container, a hole forming portion that forms a hole communicating with the internal space of the container; a guide opening portion having a water-repellent guide surface that guides the contents to the hole forming portion and an outer peripheral surface that extends from an outer peripheral edge of the guide surface in a direction from the outside of the container toward the inside of the container; and an opening / closing lid having a sealing cylinder that comes into tight contact with the outer peripheral surface of the guide opening when closed.

2. The cap according to claim 1 , further comprising a lip portion that projects outward from the container between the hole-forming portion and the outer circumferential edge of the guide surface and allows the contents to flow out.

3. The cap of claim 2 , wherein the lip portion is provided along the aperture formation portion.

4. The cap according to claim 2 or 3, wherein the lip portion has a trough-like portion.

5. The cap according to claim 4 , wherein the hole forming portion has a tapered portion that narrows toward the radially outer side of the guide opening portion, and the trough-shaped portion is provided along the tapered portion.

6. A cap as described in any one of claims 1 to 5, having a removable portion including a plug body connected to the hole forming portion around the entire circumference via a breakable portion, and a pull ring connected to the outer surface of the plug body.

7. The cap according to any one of claims 1 to 6, wherein the guide surface has a diameter that decreases toward the inside of the container up to the hole forming portion.

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