Cap and container

Abstract

The present invention comprises a cap body (16) that is attached to a mouth part (12) of a container body (11) and in which a small hole (15) through which contents can be discharged is formed, and a lid body (17), the cap body (16) being provided with an exterior cylinder (41) that is externally mounted on the mouth part (12) in a state of protruding upward from the mouth part (12), and a first cylinder (43) that is fitted into the mouth part 12, a connection cylinder (65) that extends upward and a topped cylindrical pedestal cylinder (66) that is positioned further to the inside in the radial direction than the connection cylinder (65) and protrudes upward being formed in the first cylinder (43), and the small hole (15) being formed through a top wall (69) of the pedestal cylinder (66) in the vertical direction.

Description

Caps and containers

[0001] This application claims priority from Japanese Patent Application No. 2024-018861, filed February 9, 2024, the contents of which are incorporated herein by reference.

[0002] Conventionally, double containers have been known, such as those shown in Patent Document 1 below, which include an inner container that shrinks and deforms as the contents stored therein decrease, and an outer container in which the inner container is housed, and which include a container body having a mouth, a body, and a bottom arranged in this order from top to bottom along the container axial direction, a cap body attached to the mouth of the outer container and having a discharge hole for the contents, and a lid body detachably screwed onto the cap body and closing the discharge hole, and which has an outside air inlet hole that introduces outside air between the outer container and the inner container as the contents decrease. Also known as a double container is a configuration in which the container is connected to a pipe and the contents are supplied into the pipe through the discharge hole, as shown in Patent Document 2 below.

[0003] Japanese Patent Publication No. 2017-197252 Japanese Patent Publication No. 2005-335713

[0004] When the container is handled, for example, by connecting it to piping as described in Patent Document 2, with the lid removed from the cap body and the discharge hole open, there is a possibility that the contents may unintentionally leak outside the cap body through the discharge hole if there is no discharge valve to open and close the discharge hole.

[0005] To provide a cap and a container that can prevent the contents from unintentionally leaking outside the cap body through a small hole, which is a discharge hole, even when the container without a discharge valve is handled with the lid body removed from the cap body and the small hole, which is a discharge hole, open.

[0006] A first aspect of the present invention comprises a cap body that is attached to the mouth of a container body that contains contents and has a small hole formed therein through which the contents can be dispensed, and a lid body that is removably screwed onto the cap body, wherein the cap body comprises an outer tube that is attached to the mouth of the container body in a state where it protrudes upward from the mouth, and a first tube that is fitted into the mouth of the container body, and the lid body is screwed onto an upper part of the outer tube that protrudes upward from the mouth of the container body, and the first tube has an upper a connecting tube extending toward the connecting tube and a topped, cylindrical base tube located radially inward of the connecting tube and protruding upward, the small hole being formed in the top wall of the base tube in the vertical direction, the lid body being provided with a bottomed, cylindrical second tube within the connecting tube, the bottom wall of the second tube being formed with a retaining tube protruding downward and surrounding the base tube in the radial direction, and a gasket being disposed within the retaining tube to abut against the top wall of the base tube and seal the small hole.

[0007] The small hole for discharging the contents is formed in the top wall of the base tube, which is located radially inward of the connecting tube formed on the first tube, among the first tubes provided at the mouth of the container body. This keeps the inner diameter of the small hole small, and combined with the small hole being surrounded from the radial outside by the connecting tube, prevents the contents from unintentionally leaking out of the cap body through the small hole, even when handling a container without a discharge valve with the lid body removed from the cap body and the small hole open. A gasket is disposed within a retaining tube formed on the bottom wall of the second tube of the lid body, abutting against the top wall of the base tube to seal the small hole. This ensures reliable sealing of the small hole when the lid body is attached to the cap body.

[0008] A second aspect of the present invention is the cap according to the first aspect, wherein the number of the small holes is two or more.

[0009] When forming small holes, thin film fragments may occur. The number of small holes formed in the top wall of the base tube is two or more. This prevents all the small holes from being blocked by thin film fragments.

[0010] A third aspect of the present invention is the cap according to the first aspect, wherein the small hole has an inner diameter of 0.3 mm or less.

[0011] The small hole has an inner diameter of 0.3 mm or less. This reliably prevents the contents from unintentionally leaking out of the cap body through the small hole. The inner diameter of the small hole is preferably 1.0 mm or less, more preferably 0.5 mm or less, and even more preferably 0.3 mm or less.

[0012] A fourth aspect of the present invention is a container having a cap according to any one of the first to third aspects and a container body for accommodating contents, the cap being attached to the mouth of the container body.

[0013] The container according to the fourth aspect includes the cap according to any one of the first to third aspects, so that even if the container without a discharge valve is handled with the lid removed from the cap body and the small hole open, it is possible to prevent the contents from unintentionally leaking out of the cap body through the small hole.

[0014] A fifth aspect of the present invention is the container according to the fourth aspect, wherein the full capacity of the container body is 600 ml or less.

[0015] The full capacity of the container body is 600 ml or less. This makes the container easy to handle, and even when handling a container without a discharge valve with the lid removed from the cap body and the small hole open, it is possible to further prevent the contents from unintentionally leaking out of the cap body through the small hole. The full capacity of the container body is preferably 2 L or less, more preferably 1 L or less, even more preferably 700 ml or less, and even more preferably 600 ml or less.

[0016] According to one aspect of the present invention, even when a container without a discharge valve is handled with the lid body removed from the cap body and the small hole open, the contents can be prevented from unintentionally leaking outside the cap body through the small hole.

[0017] 1 is a front view of a container shown as an embodiment of the present invention, with a portion thereof in vertical section;FIG. 2 is a front view of a main part of the container shown in FIG.

[0018] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in Fig. 1, a container 1 according to this embodiment includes a bottomed, cylindrical container body 11 for accommodating contents, and a cap 13 according to this embodiment attached to an opening 12 of the container body 11. As shown in Fig. 2, the cap 13 includes a cap body 16 attached to the opening 12 of the container body 11 and having a small hole 15 through which the contents in the container body 11 can be dispensed, a lid 17 detachably screwed onto the cap body 16, and a gasket 18 for closing the small hole 15 in the cap body 16.

[0019] The container body 11, cap body 16, lid body 17, and gasket 18 are arranged coaxially with the common axis O. Therefore, the cap 13 is also arranged coaxially with the common axis O. Hereinafter, the direction along the common axis O will be referred to as the vertical direction, the direction intersecting the common axis O when viewed from the vertical direction will be referred to as the radial direction, and the direction going around the common axis O will be referred to as the circumferential direction. In addition, in the vertical direction, the side where the cap 13 is located relative to the bottom 26 of the container body 11 will be referred to as the upper side, and the side where the bottom 26 is located relative to the cap 13 will be referred to as the lower side.

[0020] The container body 11 includes an inner container 21 that shrinks and deforms as the contents stored therein decrease, and an outer container 22 in which the inner container 21 is housed, and as shown in Figure 1, the mouth 12, body 25, and bottom 26 are arranged in this order from top to bottom along the vertical direction.

[0021] The mouth 12 is generally cylindrical. As shown in Fig. 2, a plurality of rib-like protrusions 31 protruding radially outward from the outer container 22 are formed at intervals in the circumferential direction on the outer periphery of the portion constituting the mouth 12 of the outer container 22. A circular flange 32 protruding radially outward is formed below the protrusions 31 on the outer periphery of the portion constituting the mouth 12 of the outer container 22.

[0022] As shown in FIG. 1 , the body 25 is cylindrical and extends downward from the lower end of the mouth 12 .

[0023] The bottom 26 closes the lower end of the body 25. A slit 34 is formed in the portion of the outer container 22 that forms the bottom 26. The slit 34 is an outside air inlet that introduces outside air between the outer container 22 and the inner container 21 when the contents in the inner container 21 shown in Figure 2 decrease.

[0024] The full capacity of the container body 11, i.e., the full capacity of the inner container 21, is 600 ml or less. The upper limit of the full capacity of the container body 11 is preferably 2 L or less, more preferably 1 L or less, even more preferably 700 ml or less, and even more preferably 600 ml or less.

[0025] The cap body 16 includes an outer tube 41 that is fitted around the mouth 12 of the container body 11 and protrudes upward from the mouth 12, an extension portion 42 that extends radially inward from a vertically intermediate position of the outer tube 41, and a bottomed, cylindrical first tube 43 that protrudes downward from the radially inner edge of the extension portion 42. The extension portion 42 of the cap body 16 abuts from above against the upper end of the mouth 12 of the container body 11. The first tube 43 is positioned radially inward of the outer tube 41 and is fitted liquid-tightly within the mouth 12 of the container body 11. The first tube 43 is fitted liquid-tightly into the portion that constitutes the mouth 12 of the inner container 21.

[0026] The outer tube 41 has an upper upper constituent portion 45 that protrudes upward from the extending portion 42, and a lower lower constituent portion 46 that protrudes downward from the extending portion 42. The upper constituent portion 45 protrudes upward from the mouth portion 12. The outer tube 41 has a male thread 48 formed on the outer periphery of the radially outer side of the upper constituent portion 45. The outer tube 41 has a locking flange portion 49 that protrudes radially outward at the top of the lower constituent portion 46 that fits into the mouth portion 12 of the container body 11. The outer tube 41 has a plurality of protrusions 51 formed at intervals in the circumferential direction on the radially inner side of the lower constituent portion 46. The protrusions 51 fit between the protrusions 31 of the mouth portion 12 to restrict circumferential rotation of the cap body 16 relative to the mouth portion 12. The lower structural portion 46 of the outer tube 41 has an engagement portion 52 formed below the protrusion 51 that engages with the flange portion 32 of the mouth portion 12 from below, preventing the cap body 16 from coming off the mouth portion 12.

[0027] The first tube 43 has a sidewall 61 on the radially outer side and a bottom wall 62 located radially inward of the sidewall 61. The sidewall 61 is cylindrical and fits fluid-tightly into the opening 12. The bottom wall 62 has a bottom wall main body 64 extending radially inward from the lower end of the sidewall 61, a connecting tube 65 located radially inward of the sidewall 61 and extending upward from the bottom wall main body 64, and a capped cylindrical base tube 66 located radially inward of the connecting tube 65 and protruding upward from the bottom wall main body 64. The base tube 66 is formed in the radial center of the cap body 16. The bottom wall 62 of the first tube 43 may be formed from the upper end or the vertical middle portion of the sidewall 61.

[0028] The base tube 66 has a cylindrical side wall 68 that protrudes upward from the bottom wall main body 64, and a top wall 69 that extends radially inward from the upper edge of the side wall 68. The small holes 15 described above are formed vertically through the top wall 69 of the base tube 66. The small holes 15 communicate with the interior of the inner container 21. Two small holes 15 are formed in the top wall 69 of the base tube 66. The inner diameter of each small hole 15 is 0.3 mm or less. The inner diameter of each small hole is preferably 1.0 mm or less, more preferably 0.5 mm or less, and even more preferably 0.3 mm or less. Two or more small holes 15 may be formed.

[0029] The lid body 17 has a lid body main body 71, an annular portion 72, a fragile portion 73 connecting the lid body main body 71 and the annular portion 72, and a locking piece 74 extending radially inward from the annular portion 72 and abutting against the locking flange portion 49 of the cap body 16 from below to be locked to the locking flange portion 49.

[0030] The lid body main body 71 includes a peripheral wall 76 that is threadedly attached to the upper constituent portion 45 of the outer tube 41, a lid portion 77 that extends radially inward from the upper edge of the peripheral wall 76, and a bottomed, cylindrical second tube 78 that protrudes downward from the inner peripheral edge of the lid portion 77 radially inward of the peripheral wall 76 and is inserted into the connecting tube 65 of the cap body 16 with a gap between them. When the lid body 17 is threadedly attached to the upper constituent portion 45 of the outer tube 41 at the peripheral wall 76, the lid portion 77 faces the upper constituent portion 45 with a gap between them. A female thread 80 that threads onto the male thread 48 of the cap body 16 is formed on the radially inner side of the peripheral wall 76, and the annular portion 72 is connected to the lower end of the peripheral wall 76 via a fragile portion 73. Here, since there is a gap between the second tube 78 and the connecting tube 65 and there is a gap between the lid portion 77 and the upper constituent portion 45, the internal pressure in the lid body 17 can be released to the outside. Furthermore, since there is a gap between the second tube 78 and the connecting tube 65, the opening torque between the second tube 78 and the connecting tube 65 when the lid body 17 is opened can be reduced. Note that the second tube 78 may be fitted liquid-tightly with the connecting tube 65. In other words, the gap between the second tube 78 and the connecting tube 65 is not basically sealed liquid-tight, but it may be sealed liquid-tight.

[0031] The second tube 78 has a radially outer sidewall 81 extending from the lid portion 77 and a bottom wall 82 extending radially inward beyond the lower end of the sidewall 81. The sidewall 81 is cylindrical, and the bottom wall 82 is disk-shaped. A retaining tube 83 is formed on the bottom wall 82, protruding downward and radially surrounding the base tube 66 of the cap body 16. A gasket 18 is disposed within the retaining tube 83. The gasket 18 is disk-shaped and abuts against the top wall 69 of the base tube 66 to seal the small hole 15. A locking portion 84 is formed at the bottom of the retaining tube 83, protruding radially inward to prevent the gasket 18 from falling out of the retaining tube 83. The retaining tube 83 has a vertical gap around its entire circumference between it and the bottom wall main body 64 of the first tube 43, and a radial gap around its entire circumference between it and the base tube 66.

[0032] The container 1 has a cap 13 and a container body 11 for accommodating the contents, and the cap 13 is attached to the opening 12 of the container body 11 .

[0033] The container 1 is unscrewed by rotating the lid body 71 of the cap 13 circumferentially relative to the outer tube 41 toward the loosening side. At this time, the lid body 71 moves upward relative to the outer tube 41. In response, the locking piece 74, which is locked to the locking flange 49 of the mouth 12 of the container body 11, restricts the upward movement of the annular portion 72, causing the fragile portion 73 to break and separating the lid body 71 and the annular portion 72. As the lid body 71 moves upward relative to the outer tube 41, the retaining tube 83 of the second tube 78 of the lid body 71 separates from the base tube 66 in the axial direction, releasing the retained packing 18 from the top wall 69 of the base tube 66 and opening the small hole 15. The second tube 78 of the lid body 71 then slides upward out of the connecting tube 65 of the cap body 16, and the lid body 71 is detached from the cap body 16.

[0034] Thereafter, the container 1 is turned sideways and attached to an attachment member of a fluid device (not shown), and this attachment member fits into the connecting tube 65 of the cap body 16. The fluid device creates a negative pressure in the connecting tube 65, sucking the additive liquid contained in the inner container 21 of the container body 11 through the small hole 15 of the cap body 16, and supplies the additive liquid in the container 1 to the liquid circulating in the piping or the like.

[0035] As described above, in the cap 13 according to this embodiment, the small hole 15 for discharging the contents is formed in the top wall 69 of the base tube 66, which is located radially inward of the connecting tube 65 formed in the first tube 43 of the first tube 43 provided in the mouth 12 of the container body 11. This keeps the inner diameter of the small hole 15 small, and combined with the fact that the small hole 15 is surrounded from the radial outside by the connecting tube 65, it is possible to prevent the contents from unintentionally leaking out of the cap body 16 through the small hole 15, even when handling a container 1 that does not have a discharge valve, with the lid 17 removed from the cap body 16 and the small hole 15 open.

[0036] A packing 18 that abuts against the top wall 69 of the base cylinder 66 and seals the small hole 15 is disposed inside a retaining cylinder 83 formed on the bottom wall 82 of the second cylinder 78 of the lid body 17. This ensures that the small hole 15 is tightly sealed when the lid body 17 is attached to the cap body 16.

[0037] According to the cap 13, the number of small holes 15 formed in the top wall 69 of the base cylinder 66 is two or more. This makes it possible to prevent all of the small holes 15 from being blocked by thin pieces.

[0038] In the cap 13, the small hole 15 has an inner diameter of 0.3 mm or less. This reliably prevents the contents from unintentionally leaking out of the cap body 16 through the small hole 15. That is, if the diameter of the small hole 15 is set to 0.3 mm, the amount of leakage and dripping can be reduced even if the container 1 is tilted when installed in a fluidic device (not shown). In contrast, if the diameter of the small hole 15 is set to greater than 0.3 mm, for example, 0.5 mm, the amount of leakage and dripping increases when the container 1 is tilted.

[0039] According to the container 1, the container 1 is provided with a cap 13. As a result, even if the container 1, which does not have a discharge valve, is handled with the lid body 17 removed from the cap body 16 and the small hole 15 open, it is possible to prevent the contents from unintentionally leaking out of the cap body 16 through the small hole 15.

[0040] According to the container 1, the full capacity of the container body 11 is 600 ml or less. This makes the container 1 easy to handle, and even when the container 1, which does not have a discharge valve, is handled with the lid 17 removed from the cap body 16 and the small hole 15 open, it is possible to further prevent the contents from unintentionally leaking out of the cap body 16 through the small hole 15.

[0041] According to one aspect of the present invention, even when a container without a discharge valve is handled with the lid body removed from the cap body and the small hole open, the contents can be prevented from unintentionally leaking outside the cap body through the small hole.

[0042] REFERENCE SIGNS LIST 1 Container 11 Container body 12 Mouth portion 13 Cap 15 Small hole 16 Cap body 17 Lid body 18 Gasket 41 Outer tube 43 First tube 65 Connecting tube 66 Base tube 69 Top wall 78 Second tube 82 Bottom wall 83 Holding tube

Claims

1. A cap body is attached to the mouth of a container body that contains contents, and has a small hole formed therein through which the contents can be dispensed; and a lid body is removably screwed onto the cap body, wherein the cap body comprises: an outer tube that is attached to the mouth of the container body and protrudes upward from the mouth; and a first tube that is fitted into the mouth of the container body, wherein the lid body is screwed onto the upper part of the outer tube that protrudes upward from the mouth of the container body, and the first tube is formed with: a connecting tube that extends upward; and a topped cylindrical base tube that is located radially inward from the connecting tube and protrudes upward, wherein the small hole is formed in the top wall of the base tube and penetrates vertically, and the lid body is provided with a bottomed cylindrical second tube within the connecting tube, and a retaining tube is formed on the bottom wall of the second tube that protrudes downward and radially surrounds the base tube, A packing is disposed within the retaining cylinder to abut against the top wall of the base cylinder and seal the small hole.

2. The cap according to claim 1, wherein the number of said small holes is two or more.

3. The cap according to claim 1, wherein the small hole has an inner diameter of 0.3 mm or less.

4. A container comprising the cap according to any one of claims 1 to 3 and a container body for accommodating contents, wherein the cap is attached to the opening of the container body.

5. The container according to claim 4, wherein the full capacity of the container body is 600 ml or less.

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