cap

Abstract

To provide a cap which is improved in sealability by using a double seal.SOLUTION: A cap comprises a cap body attached on an opening of a container and a lid body sealing the opening of the cap body, wherein the cap body is provided with: an attachment part attached on the opening of the container; a base wall extended inward from the attachment part, in which a spout is opened; and a spout cylinder erected from the base wall, the spout cylinder is provided with an edge part of the spout forming the spout, the lid body is provided with: a top wall, a side peripheral wall arranged perpendicular to a peripheral edge part of the top wall; a first seal cylinder vertically arranged from an inner surface of the top wall; and a second seal cylinder vertically arranged on an inner side of the first seal cylinder, the first seal cylinder forms a first sealing part configured to form a sealed state by being inserted in an inner peripheral surface of an upper part of the spout cylinder upon closing the lid body, and the second seal cylinder forms a second sealing part configured to come close or abut to an edge end part of the spout edge part at an outer peripheral side upon closing the lid body.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cap that is attached to the mouth of a container, and more particularly to a cap that is sealed by a double seal by providing a second seal below the usual first seal at the top of the pouring tube. [Background technology]

[0002] Conventionally, in a cap having a cap body that is attached to the mouth of a container and a lid body that closes the opening of the cap body, a partition wall having a removable portion formed by a pull ring or the like has been provided at the intended opening portion of the cap body to ensure the airtightness of the container. However, in order to open the removal section, it is necessary to open the lid and then remove the removal section by pulling a pull ring or the like, which is tedious and can be difficult for users with weak strength to remove the bottle.

[0003] For this reason, a hinge cap has been known as a cap that does not require the operation of unplugging. The inner lid has an inner ring that is slidably held by an outer lid to seal the dispensing tube of the cap body, and the inner lid is attached and detached from the mouth of the dispensing tube in conjunction with the movement of the outer lid, allowing the cap to be opened and the contents to be removed with a single action (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-162499 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the cap described in Patent Document 1 focuses on improving ease of opening, so that it can be opened with a single action, and there is a problem in that when a consumer drops the container before using the contents, the impact can cause the contents inside the container to adhere to the inner surface of the lid or the liquid to leak. Furthermore, such caps have the problem of being limited in that the diameter of the spout is small and only circular shapes are possible.

[0006] The present invention aims to solve the above problems by providing a cap that prevents liquid from leaking from the seal between the pouring tube and the sealing tube of the cap body due to an impact such as when the container is dropped, and that has a large spout that makes pouring easier and improves the way the liquid flows out. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the present invention provides a cap comprising a cap body attached to the mouth of a container and a lid body closing the opening of the cap body, wherein the cap body comprises an attachment part attached to the mouth of the container, a base wall extending inward from the attachment part and having a pouring outlet, and a pouring tube erected from the base wall, the pouring tube having a pouring outlet edge part protruding inward from the lower inner periphery and forming the pouring outlet, the lid body comprises a top wall, a side peripheral wall hanging down from the peripheral edge of the top wall, a first sealing tube hanging down from the inner surface of the top wall, and a second sealing tube hanging down inside the first sealing tube, the first sealing tube having a first sealing part formed therein that is inserted into the inner periphery of the upper part of the pouring tube when the lid is closed to achieve a sealed state, and the second sealing tube having a first sealing part that is inserted into the inner periphery of the upper part of the pouring tube when the lid is closed The edge of the spout Edge end face is the second seal tube On the outer surface of By abutting The second seal is formed will be The present invention employs a configuration characterized by the above.

[0008] As an embodiment of the cap, a configuration is adopted in which the spout formed by the edge end of the spout edge is circular or a deformed shape other than circular, and the second sealing tube has the same shape as the spout.

[0009] Specific embodiments of the cap include a configuration in which the spout edge has a gently sloping upper surface and a notched lower surface that is tapered toward the edge, a configuration in which the spout edge is sloping downward inward, and a configuration in which the spout edge has a thin-walled portion formed thereon.

[0010] Furthermore, as specific embodiments of the cap, the second sealing tube is configured so that its outer peripheral surface abuts against the end face of the edge of the spout edge, the second sealing tube is configured so that a protrusion is provided below the second sealing portion on the outer peripheral side, and the cap is configured as a hinge cap consisting of a cap body and a lid body connected via a hinge. [Effects of the Invention]

[0011] By adopting the above-mentioned configuration, the cap of the present invention has a double seal formed by the normal first seal portion between the first sealing tube and the dispensing tube, and the second seal portion between the second sealing tube and the edge of the spout rim, so even if one seal is removed, the container remains airtight as the other seal is still in place.In addition, even if the contents enter the second seal portion due to an impact such as being dropped while the lid is closed, the contents are contained because there is a space between the first seal portion and the second seal portion, and the contents do not leak from the first seal portion. Furthermore, by changing the shape of the pouring outlet formed at the edge of the outlet rim, it is possible to make the pouring tube larger in diameter, making it easier to pour and improving the way the liquid comes out. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a side cross-sectional view showing a state in which a cap according to a first embodiment of the present invention is attached to a container in a closed state. [Figure 2] 1A and 1B are diagrams showing the cap of the first embodiment of the present invention in an open state, in which (a) is a top view and (b) is a side cross-sectional view. [Figure 3]FIG. 10 is a side cross-sectional view showing a state in which a cap according to a second embodiment of the present invention is attached to a container in a closed state. [Figure 4] 10A and 10B are diagrams showing the cap of the second embodiment of the present invention in an open state, in which (a) is a top view and (b) is a side cross-sectional view. [Figure 5] 10A and 10B are diagrams showing a state in which a cap according to a third embodiment of the present invention is attached to a container in a closed state, in which (a) is a side cross-sectional view and (b) is an enlarged view of a main part of (a). [Figure 6] FIG. 10 is a side cross-sectional view showing a state in which a cap according to a fourth embodiment of the present invention is attached to a container in a closed state. [Figure 7] 10A and 10B are diagrams showing the cap of the fourth embodiment of the present invention in an open state, in which (a) is a top view and (b) is a side cross-sectional view. [Figure 8] FIG. 10 is a side cross-sectional view showing a state in which a cap according to a fifth embodiment of the present invention is attached to a container in a closed state. [Figure 9] 10A and 10B are diagrams showing the cap of the fifth embodiment of the present invention in an open state, in which (a) is a top view and (b) is a side cross-sectional view. [Figure 10] FIG. 10 is a side cross-sectional view showing a state in which a cap according to a sixth embodiment of the present invention is attached to a container in a closed state. [Figure 11] 10A and 10B are diagrams showing the cap of the sixth embodiment of the present invention in an open state, in which (a) is a top view and (b) is a side cross-sectional view. DETAILED DESCRIPTION OF THE INVENTION

[0013] The cap of the present invention will be described with reference to the drawings showing an embodiment embodied as a hinged cap. [Example]

[0014] In FIG. 1, A is a container, B is a cap body attached to the container A, C is a hinge, and D is a lid body attached to the cap body B via the hinge C so as to be able to open and close. The container A has a mouth 1 at the top, and a fitting ridge 2 is provided on the outer periphery of the mouth 1.

[0015] As shown in Figures 1 and 2, the cap body B comprises an attachment portion 3 that is attached to the mouth portion 1 of the container A, a base wall 4 that extends inward from the lower end of the inner edge of the attachment portion 3 and seals the opening of the mouth portion 1, a dispensing tube 5 that stands upright from the end of the base wall 4, and an outer tube portion 6 that is connected to the outer periphery of the attachment portion 3 at a certain interval. As shown in Figures 1 and 2(b), in this embodiment, the dispensing tube 5 is erected from the end of the base wall 4 which extends inward from the lower end of the inner tube 10 of the mounting part 3, which will be described later, and together with the inner tube 10 forms a U-shaped groove with the base wall 4 as the bottom wall. In order to make it easier to pour the liquid content, in this embodiment, the side of the pouring tube 5 opposite the hinge C (the pouring side) is formed higher than the hinge C side, and the upper part is widened in a trumpet shape. Further, on the inner peripheral side of the lower part of the pouring cylinder 5, a pouring outlet edge 7 is formed which protrudes inward.

[0016] The outlet edge 7 allows the shape of the outlet a formed by the edge end 7a to be a modified shape other than circular, and in this embodiment, as shown in Figure 2(a), a diamond-shaped outlet a is formed that is long in the direction of the line connecting the hinge C and the opposite pouring direction, and short in the vertical direction. In addition, in this embodiment, the spout edge 7 has a gently sloping upper surface and a notched lower surface that is thinner towards the edge end 7a to allow the content liquid to easily return.

[0017] The mounting portion 3 is composed of an annular lid engagement portion 9 having a locking protrusion 8 on its periphery that engages with the lid body D, an inner tube 10 that hangs down from the inner side of the lid engagement portion 9, and an outer tube 11 that hangs down from the outer side of the lid engagement portion 9. The outer cylinder 11 is provided with an engaging protrusion 12 on the lower inner periphery that engages with the engaging protrusion 2 on the mouth 1 of the container A.

[0018] The outer periphery of the lower end of the outer tube 11 and the inner periphery of the lower end of the outer tube portion 6 are connected via an unbreakable connecting portion 15 provided over a predetermined arc range at a position opposite the hinge C, and multiple breakable weakened portions 16 arranged at intervals in the range on the hinge C side other than the arc range.

[0019] As shown in Figures 1 and 2, the lid body D is rotatably attached to the upper outer end of the outer cylindrical portion 6 of the cap body B via a hinge C, and has a top wall 20 and a side peripheral wall 21 hanging down from the peripheral edge of the top wall 20. A first sealing cylinder 22 and a second sealing cylinder 23 that is positioned inside and outside the first sealing cylinder 22 and has a shape that matches the edge 7 of the pouring outlet are vertically arranged from the inner surface of the top wall 20. In this embodiment, the spout a is rhombic due to the edge end 7a of the spout edge 7, so the second seal cylinder 23 is also rhombic, as shown in FIG. 2(a).

[0020] The first seal cylinder 22 is inserted into the upper part of the inner circumferential surface of the pouring cylinder 5 when the lid is closed, and forms a normal first seal portion b that provides a sealed state. In addition, the second sealing tube 23 is formed so that when the lid is closed, its outer surface is close to or in contact with the edge end 7a of the spout edge portion 7 provided on the lower inner circumference of the spout tube 5, and a second sealing portion c is formed together with the edge end 7a. The cap is sealed with a double seal made up of the first seal part b and the second seal part c, and the second seal part c reduces the impact of the contents caused by dropping, etc. Furthermore, even if the contents enter the second seal part c, the space between it and the first seal part b keeps the contents contained, preventing leakage from the first seal part b. The second seal portion c may be located anywhere below the first seal portion b.

[0021] In addition, when the spout edge 7 is formed thin toward the edge end 7a, as in this embodiment, it is fine to form the second seal portion c by abutting it against the outer peripheral surface of the second seal tube 23. However, when the end face at the edge end 7a is formed wide, if it is abutted entirely against the outer peripheral surface of the second seal tube 23, a large force will be required to pull apart both the first seal portion b and the second seal portion c when opening the lid body D, making it difficult to open. In such cases, it is desirable to form the second seal portion c close to the outer peripheral surface of the second seal tube 23.

[0022] The lower end of the side peripheral wall 21 has a locking protrusion 24 hanging down on the inner peripheral side that engages with the inner peripheral side of the lid engagement portion 9 of the cap body B, and a locking recess 25 in the center that engages with the locking protrusion 8 of the lid engagement portion 9 to maintain the lid in a closed state. An arc-shaped grip portion 26 extends in the circumferential direction from the outer periphery of the side peripheral wall 21 on the side opposite to the hinge C, and a finger hook 27 is provided on the lower surface of the center of the grip portion 26.

[0023] In order to prevent unauthorized opening before use, the hinge cap of this embodiment has a shrink label or sealing member or the like provided between the cap body B and the lid body D, although this is not shown.

[0024] Next, the manner of use and the effects of this embodiment will be described. In the hinge cap of this embodiment, first, the cover body D is rotated via the hinge C from the state shown in FIG. 2, and placed over the cap body B to close the cover.

[0025] At this time, the lower outer periphery of the first sealing tube 22 of the lid body D adheres to the upper inner periphery of the dispensing tube 5 of the cap body B, forming a first sealing portion b, and the outer periphery of the second sealing tube 23 comes close to or abuts against the edge portion 7a of the dispensing outlet edge portion 7, forming a second sealing portion c.

[0026] Next, as shown in FIG. 1, the closed hinge cap is attached to the mouth 1 of the container A filled with the liquid content. In the stoppering process, the mouth 1 of the container A is placed in the annular groove formed between the inner tube 10 and outer tube 11 of the attachment part 3, and a pressing force is applied from above the lid body D, causing the engaging protrusion 12 of the outer tube 11 to climb over the mating protrusion 2 of the mouth 1 and engage, and the mouth 1 of the container A is clamped between the outer periphery of the inner tube 10, the inner periphery of the outer tube 11, and the lid engagement part 9, thereby attaching the container.

[0027] In the hinge cap of this embodiment, when the lid is closed, the first seal tube 22 of the lid body D is doubly sealed by the first seal portion b between the upper inner periphery of the dispensing tube 5 of the cap body B and the second seal portion c between the outer periphery of the second seal tube 23 and the edge portion 7a of the dispensing outlet edge portion 7 at the bottom of the dispensing tube 5, thereby maintaining the airtightness of the container A, and the impact of the contents caused by a fall, etc. is suppressed by the second seal portion c. Even if the contents enter the second seal portion c, the contents are retained because there is a space between it and the first seal portion b, and the contents do not leak from the first seal portion b.

[0028] In the hinge cap of this embodiment, when the lid is closed and a pressing force is applied from above to the lid body D due to an impact such as a fall, the lid body D is pushed into the cap body B. However, the locking protrusion 24 provided on the lower end of the side wall 21 of the lid body D engages with the inner side of the lid engagement portion 9 of the cap body B, thereby preventing the lower end of the side wall 21 of the lid body D from spreading outward and deforming.

[0029] When opening the hinge cap for the first time to use the liquid contents in container A for the first time, it is necessary to remove the shrink label and sealing material located between cap body B and lid body D, although this is not shown.

[0030] Next, by placing one's fingers on the finger hook 27 of the lid body D and lifting the handle 26, the second seal c between the second seal tube 23 of the lid body D and the spout edge 7 is released, and then the first seal tube 22 is released at the first seal b between the spout tube 5 of the cap body B, and the lid body D is opened, so that the liquid contents in the container A can be easily poured out from the spout tube 5 by simply tilting the container A. In this embodiment, even if the pouring tube 5 is made larger, the pouring outlet a is elongated in the pouring direction at the pouring outlet edge 7, so the amount of content liquid poured out is reduced and it is easy to pour out.

[0031] By closing the lid body D again on the cap body B, the outer surface of the second seal tube 23 of the lid body D comes close to or abuts the edge portion 7a of the spout edge portion 7, forming a second seal portion c, and the outer surface of the first seal tube 22 comes into close contact with the upper inner circumference of the spout tube 5 of the cap body B, forming a first seal portion b, thereby sealing the inside of the cap body B and allowing the hinge cap to be used by repeatedly opening and closing the lid body D.

[0032] The hinge cap of this embodiment can be disposed of separately from the opening 1 of the container A after the liquid content in the container A has been used up. In this case, the hinge cap is opened, and the lid body D is grasped with the fingers and pulled upward, which breaks the weakened portion 16. When the lid body D is pulled further upward, the outer tube 11 is finally pulled via the connecting portion 15, which releases the engagement between the cap body B and the mouth portion 1 of the container A, and the hinge cap and the container A can be disposed of separately. [Example]

[0033] Next, a second embodiment in which the shape of the spout edge 7 of the spouting cylinder 5 is changed will be described. In the following, the same parts as those in the first embodiment are given the same reference numerals, and the differences will be mainly explained.

[0034] As shown in Figure 4, the shape of the spout a formed by the edge end 37a of the spout edge portion 37 protruding from the lower inner circumference of the spout tube 5 in the cap body B is circular, and the second seal tube 33 of the lid body D also has the same circular shape as the spout a. As shown in Figure 3, when the lid is closed, the first sealing tube 22 is inserted into the upper inner circumference of the pouring tube 5 to form the first sealing portion b, and the outer surface of the second sealing tube 33 is close to or abuts against the edge portion 37a of the pouring outlet edge portion 37 to form the second sealing portion c.

[0035] Next, the embodiment and effects of this embodiment will be described. In this embodiment, as shown in FIG. 3, the effect of preventing liquid leakage and the like by providing a double seal with a first seal portion b and a second seal portion c is the same as in the first embodiment. In this embodiment, the shape of the outlet a is large, making it suitable for pouring out a large amount of low-viscosity liquid at once. The other configurations and effects are the same as those of the first embodiment. [Example]

[0036] Next, a third embodiment in which the configuration of the second seal cylinder 23 is modified will be described. In the following, the same parts as those in the first embodiment are given the same reference numerals, and the explanation will be centered on the differences.

[0037] As shown in FIG. 5(b), a protrusion 44 is provided on the outer periphery of the second seal cylinder 43 below the second seal c formed by the edge end 7a of the spout edge 7. The protrusions 44 may be provided over an arc or may be provided intermittently.

[0038] Next, the embodiment and effects of this embodiment will be described. In this embodiment, when the lid body D is closed, the protrusion 44 on the lower outer periphery of the second sealing tube 43 initially abuts against the edge end 7a of the spout edge 7, but can easily overcome it, and the outer periphery of the second sealing tube 43 and the edge end 7a come close to or abut against each other to form the second sealing portion c. The second seal portion c has a protrusion 44 provided below it, so it does not move up and down, and the sealing performance provided by the double seal is stable. The effect of the double seal formed by the first seal cylinder 22 at the top of the pouring cylinder 5, the first seal portion b, and the second seal portion c is the same as in the first embodiment. The other configurations and effects are the same as those of the first embodiment. [Example]

[0039] Next, a fourth embodiment in which the configurations of the separating mechanism, the pouring cylinder 5 and the pouring outlet edge portion 7 are changed will be described. In the following, the same parts as those in the first embodiment are given the same reference numerals, and the differences will be mainly explained.

[0040] As shown in Figures 6 and 7, in this embodiment, a base wall 54 is provided at the top of the inner tube 50, a pouring tube 55 is erected from the base wall 54, and the pouring outlet edge 57 protrudes inward from the lower end of the pouring tube 55, and in this embodiment, the pouring outlet edge 57 is slightly inclined downward and inward. In addition, the shape of the spout a formed by the edge end 57a of the spout edge 57 is a diamond shape that is even narrower and longer than in the first embodiment in the direction of the line connecting the hinge C and the opposite pouring direction. The shape of second sealing cylinder 53 is an elongated diamond shape that matches spout edge 57, the same as the shape of spout a based on edge end 57a.

[0041] Furthermore, there is no outer circumferential cylinder 6, but only an outer cylinder 51, and the lid D is attached to the upper end of the outer cylinder 51 via a hinge C, and the separating mechanism is also different from that of the first embodiment. As shown in Figure 7, near either the left or right side of the hinge C of the outer tube 51, a peripheral cutout portion 58 that is approximately V-shaped in a plan view is cut from above into the outer surface, leaving a thin bottom wall at the lower end. At a position corresponding to the outer circumferential notch 58 of the engaging projection 12, an inner circumferential notch (not shown) is cut in the vertical direction, forming a vertical tear line.

[0042] On the hinge C side of the outer peripheral notch 58, a slit groove 59 is recessed from above so as to extend circumferentially from a position separated by the thin-walled portion at the upper part of the inner peripheral side of the end face 58a as its starting point, and in this embodiment, it extends over an angle of approximately 345° from the end face 58a as its starting point. In addition, the starting point of the slit groove 59 adjacent to the vertical tear line is used as the tearing starting point, and a thin-walled connecting portion 60 that connects the outer tube 51 and the lid engaging portion 9 is provided on the inner side of the bottom surface of the slit groove 59, so that the circumferential tear line is formed to extend in an arc shape, and can be torn up to the unbreakable connecting portion 61 at its end point.

[0043] Next, the embodiment and effects of this embodiment will be described. As shown in FIG. 6, the hinge cap is closed and the container A is capped, as in the first embodiment. When the lid is closed, the first sealing tube 52 of the lid body D forms a first sealing portion b on the upper inner circumference of the dispensing tube 55 of the cap body B, and the second sealing tube 53 forms a second sealing portion c on its outer peripheral surface in close proximity to or in contact with the edge portion 57a ​​of the dispensing outlet edge 57. The effect of sealing with a double seal is the same as in the first embodiment, but in this embodiment, the dispensing outlet edge 57 is inclined downward, so that the sealing ability of the second sealing portion c is improved by the pressure from the contents caused by a fall, etc., and the impact from the contents can be further reduced.

[0044] In addition, since the outlet a has a narrow, elongated diamond shape in the pouring direction, the amount of outflow is suppressed, allowing for smooth pouring.

[0045] The separating mechanism of this embodiment is different from that of the first embodiment, and the following describes the separating and disposing of the containers after use. When the hinge cap is opened and the lid body D is grasped with the fingers and pulled outward, the portion of the outer tube 51 connected to the hinge C is pulled and deformed, causing the vertical tear line to break. When the lid body D is pulled further, the thin-walled connecting portion 60 that forms the circumferential tear line begins to break, and as the breakage of the thin-walled connecting portion 60 progresses, the lid body D moves away from the cap body B. When the thin-walled connecting portion 60 is completely broken at the end of the slit groove 59 and the lid body D is further pulled, the engagement between the cap body B and the mouth portion 1 of the container A is released, and the hinge cap and the container A can be disposed of separately. The other configurations and effects are the same as those of the first embodiment. [Example]

[0046] Next, a fifth embodiment in which the configurations of the pouring cylinder 5 and the pouring outlet edge portion 7 are changed will be described. In the following, the same parts as those in the first embodiment are denoted by the same reference numerals, and the differences will be mainly explained.

[0047] As shown in Figures 8 and 9, the pouring tube 65 has a stepped portion 65a formed on the inner periphery of its central portion, and the first sealing tube 62 has a stepped portion formed on the outer periphery of its central portion to correspond to the pouring tube 65, and a sealing end portion 62a that protrudes downward is formed on the reduced diameter inside.Even if pressure is applied from above when the lid body D is in a closed state, the stepped portion 65a of the pouring tube 65 prevents the first sealing tube 62 from entering any further. In this embodiment, the outer peripheral surface of the sealing end 62a is in close contact with the inner peripheral surface of the pouring tube 65, but it may be in light contact therewith. In addition, a spout edge 67 protrudes inward from the lower end of the spout tube 65, and the spout edge 67 is inclined downward, with the lower surface except for the edge 67a being cut out to form a thin-walled portion 67b.In this embodiment, the outer peripheral surface of the second seal tube 63 and the end face of the edge 67a abut against each other in the closed state to form the second seal portion c. The downward slope of the spout edge 67 is preferably gentle, but may also be steep. Also, in this embodiment, the thin-walled portion 67b has a notch cut out from the bottom, but it is not necessary to have a notch cut out from the bottom, as long as it is simply thin-walled. Furthermore, the second seal cylinder 63 is formed with a protrusion 44 below the second seal portion c in the same manner as in the third embodiment. In this embodiment, as shown in FIG. 9(a), the shape of the spout a formed by the edge portion 67a of the spout edge portion 67 is circular, and the shape of the second seal cylinder 63 is also circular. Thin portion 67b on the underside of spout edge 67 is formed over the entire circumference of spout edge 67. The configuration of the cap body B and the separating mechanism are the same as those in the fourth embodiment.

[0048] Next, the embodiment and effects of this embodiment will be described. The hinge cap of this embodiment is the same as that of the first embodiment in that it is changed from the open state of FIG. 9 to the closed state of FIG. 8 and then capped onto the container A. When the lid body D is closed, the first sealing tube 62 forms the first sealing portion b of the dispensing tube 65 of the cap body B, and in this embodiment, the second sealing tube 63 forms the second sealing portion c by abutting its outer surface against the end face of the edge portion 67a of the dispensing outlet edge portion 67, forming a sealed state equivalent to the first sealing portion b and strengthening the sealing performance provided by the double seal. In this embodiment, a step 65a is formed in the center of the dispensing tube 65, and a step is also provided in the corresponding position on the first sealing tube 62 to form a reduced-diameter sealing end 62a.Even when pressure is applied to the lid body D from above in the closed state, the first sealing tube 62 will not be pushed in, so that the lid can be opened easily without requiring excessive force.

[0049] In this embodiment, the first seal portion b and the second seal portion c have the same sealing ability, thereby enhancing the sealing ability. In addition, when the spout edge 67 is subjected to an impact from the liquid contents when dropped, the thin-walled portion 67b provided on the spout edge 67 moves upward from the thin-walled portion 67b as a starting point, thereby strengthening the sealing ability of the second seal portion c with the outer peripheral surface of the second seal tube 63. In addition, by moving the spout edge 67 upward starting from the thin-walled portion 67b, the impact of the contents is absorbed, thereby reducing the impact of the contents on the first seal portion b and also reducing deformation of the second seal tube 63. At the same time, in this embodiment, since the protrusion 44 is provided on the lower part of the second seal portion c of the second seal cylinder 63, the second seal cylinder 63 is prevented from moving upward. Furthermore, the seal end 62a of the first seal tube 62 further reduces the impact of the content liquid, protecting the first seal portion b. In this embodiment, the width of the thin-walled portion 67b is set over the entire underside of the spout edge portion 67 excluding the edge portion 67a, but it is sufficient that the base portion near the bottom end of the spout tube 65 is thin. Also, the thin-walled portion 67b does not have to be uniform in thickness overall, and may be slightly thicker from the base portion toward the edge portion 67a, but the wider the thin-walled portion 67b, the greater the impact absorption effect. The separating mechanism has the same configuration and effect as the fourth embodiment. The other configurations and effects are the same as those of the first embodiment. [Example]

[0050] Next, a sixth embodiment in which the configurations of the pouring cylinder 5 and the pouring outlet edge portion 7 are changed will be described. In the following, the same parts as those in the first embodiment are denoted by the same reference numerals, and the differences will be mainly explained.

[0051] As shown in FIGS. 10 and 11, the basic configuration is the same as in the fifth embodiment, but the shape of the spout a in this embodiment is a substantially diamond shape similar to that in the fourth embodiment. Therefore, in this embodiment, a step portion 75a is provided in the central portion of the dispensing tube 75, and the dispensing outlet edge portion 77 protruding inward and downward from the lower end of the dispensing tube 75 is narrow in the direction connecting the hinge C and the opposite side of the hinge C, as shown in Figure 11(a), and widens in the middle portion between the hinge C and the opposite side of the hinge C, and the thin-walled portion 77b formed on the underside of the dispensing outlet edge portion 77 is provided with the same width around the dispensing outlet a along the edge portion 77a, while maintaining the narrow width between the hinge C and the opposite side of the hinge C. In this embodiment, the thin-walled portion 77b is formed by cutting out the underside of the spout edge portion 77, but it is not limited to the top or bottom of the cutout as long as it is thin-walled. Furthermore, the thin-walled portion 77b may be thin-walled at the base portion near the bottom end of the spout tube 75, or may be thicker toward the edge portion 77a rather than being uniformly thick. Furthermore, in this embodiment, the thin-walled portion 77b is provided with a constant width, but the width of the thin-walled portion 77b may be made slightly wider toward the middle portion between the hinge C and the opposite side of the hinge C, where the spout edge portion 77 becomes wider. In addition, the shape of the second sealing tube 73 of the lid body D is also approximately diamond-shaped to match the shape of the spout a, and when the lid is closed, the outer surface of the lower part of the second sealing tube 73 abuts against the end face of the edge end portion 77a of the spout edge portion 77 to form the second sealing portion c. The second seal cylinder 73 has a protrusion 44 at the bottom thereof, below the second seal portion c. In addition, the first sealing tube 72 has a stepped portion formed on the inside, which is reduced in diameter, and a sealing end portion 72a that protrudes downward is formed, so that when the first sealing tube 72 and the dispensing tube 75 abut and form the first sealing portion b in the closed state, the first sealing tube 72 does not penetrate too deeply.

[0052] Next, the embodiment and effects of this embodiment will be described. In this embodiment, when the lid is closed, the first seal portion b is formed by the first seal tube 72 and the pouring tube 75, and the second seal tube 73 abuts at its lower outer peripheral surface against the end face of the edge portion 77a of the pouring outlet edge portion 77 to form the second seal portion c, and the first seal portion b and the second seal portion c have the same sealing properties, and the sealing properties are strengthened by the double seal. Furthermore, in this embodiment, as in the fifth embodiment, a thin-walled portion 77b is formed on the underside of the spout edge 77, so that when an impact is made by the contents when dropped, etc., the spout edge 77 moves upward from the thin-walled portion 77b, and the edge end 77a comes into strong contact with the second seal tube 73, strengthening the seal. The upward movement of the spout edge 77 absorbs the impact of the contents and reduces the effect of the impact on the first seal portion b, and also reduces deformation of the first seal portion b and the second seal tube 73. Furthermore, the seal end 72a of the first seal tube 72 reduces the impact of the liquid content and protects the first seal portion b. Furthermore, since the outlet a is roughly diamond-shaped, the amount of content liquid that flows out is suppressed, resulting in smooth pouring. The other configurations and effects are the same as those of the fifth embodiment.

[0053] In the above-mentioned first to sixth embodiments, a hinge cap has been described as a specific example of the cap, but a screw cap having a cap body and a lid body may also be used. In addition, in this embodiment, the shape of the spout is made circular and a modified diamond shape depending on the spout edge, but the shape of the spout can be various modified shapes such as oval, fan-shaped, gourd-shaped, or elongated. [Industrial Applicability]

[0054] The cap of the present invention is sealed by a double seal formed by a first seal between the first sealing tube and the dispensing tube, and a second seal between the outer surface of the second sealing tube and the edge of the dispensing outlet rim at the bottom of the dispensing tube. This maintains airtightness and the second seal suppresses impact from the contents caused by dropping the cap while it is closed, etc. Even if the contents enter the second seal, there is a space between it and the first seal, so the contents will not leak from the first seal. Furthermore, since the shape of the spout can be changed by changing the shape of the spout edge, it is possible to make the spout tube larger and make it easier to pour the contents, making it applicable to a wide range of caps for containers of contents with various properties. [Explanation of symbols]

[0055] A container B Cap body C hinge D Lid body a spout b First seal part c Second seal part 1 Mouth 2 Mating ridges 3. Mounting part 4, 54 base wall 5, 55, 65,75 pouring tube 6 Outer cylindrical part 7, 37, 57, 67, 77 Spout edge 7a, 37a, 57a, 67a, 77a Edge 8 Locking ridge 9 Lid engagement part 10, 50 inner cylinder 11, 51 outer cylinder 12 Engagement protrusion 15, 61 Connection part 16 Weakened part 20 Top Wall 21 Side wall 22, 52, 62, 72 First seal tube 23, 33, 43, 53, 63, 73 Second sealing tube 24 Locking protrusion 25 Engagement recess 26 Handle 27 Finger rest 44 protrusion 58 Peripheral notch 58a End face 59 Slit groove 60 Thin-walled joint 62a, 72a Seal end 65a, 75a Stepped section 67b, 77b Thin section

Claims

1. A cap comprising a cap body attached to the mouth of a container and a lid body closing the opening of the cap body, The cap body includes an attachment portion that is attached to the mouth of the container, a base wall that extends inward from the attachment portion and has a spout opening, and a spout tube that stands upright on the base wall. The pouring tube has a pouring outlet edge portion that protrudes inward from the lower inner periphery and forms a pouring outlet, the lid body includes a top wall, a side peripheral wall extending vertically from the peripheral edge of the top wall, a first sealing cylinder extending vertically from the inner surface of the top wall, and a second sealing cylinder extending vertically from the inside of the first sealing cylinder; The first sealing cylinder has a first sealing portion formed thereon that is inserted into the inner peripheral surface of the upper part of the pouring cylinder when the lid is closed to achieve a sealed state; The cap is characterized in that the second sealing cylinder forms a second seal when the end face of the edge of the spout edge abuts against the outer peripheral surface of the second sealing cylinder when the cap is closed.

2. The spout formed by the edge of the spout edge is circular or has a modified shape other than a circular shape, 2. The cap according to claim 1, wherein the second sealing cylinder has the same shape as the spout.

3. 3. The cap according to claim 1, wherein the edge of the spout has a gently sloping upper surface and a notched lower surface, which is tapered toward the edge.

4. 3. The cap according to claim 1, wherein the edge of the spout is inclined downward inward.

5. 5. The cap according to claim 4, wherein the edge of the spout is formed with a thin portion.

6. 6. The cap according to claim 5, wherein the second sealing cylinder has an outer peripheral surface that abuts against an end face of the edge of the spout edge.

7. 7. The cap according to claim 1, wherein the second seal cylinder has a protrusion formed below the second seal portion on the outer periphery.

8. 8. The cap according to claim 1, wherein the cap is a hinge cap comprising a cap body and a lid body connected to each other via a hinge.

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