Cap unit and beverage container

The cap unit for beverage containers addresses the issue of leakage through vent holes by positioning the vent hole to overlap with the water stop gasket and incorporating a tubular portion with a vertical ventilation groove, resulting in effective prevention of leakage even when the container is tilted or falls.

JP7672910B2Active Publication Date: 2025-05-08THERMOS K K
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Patent Information

Application Number
JP2021127777
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2021-08-03
Publication Date
2025-05-08
Estimated Expiration
2041-08-03

AI Technical Summary

Technical Problem

Existing cap units for beverage containers face challenges in preventing leakage through vent holes when the container is tilted or falls, due to the limited positioning of vent holes and the complexity of adding valve mechanisms.

Method used

The cap unit features a cap body with a liquid passage port and a vent hole covered by a lid, where the vent hole is positioned to overlap with the water stop gasket and has a tubular portion with a vertical ventilation groove, ensuring that the vent hole is sealed even when the container is tilted or inverted.

Benefits of technology

This design effectively prevents beverage leakage from the vent holes, even when the container is tilted or falls, by utilizing a simple structure that maintains sealing without the need for complex valve mechanisms, thus ensuring stable and hygienic performance.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To provide a cap unit and a beverage container which can prevent beverage from leaked from a vent hole with a simple configuration even when the beverage powerfully moves in an upward turning direction.SOLUTION: A cap unit 1A that is mounted on a container body 2 whose upper part is opened includes a cap body 10 which blocks an upper opening part 2d of the container body 2 and has a top wall part 10a and a peripheral wall part 10b, a lid body 20 arranged above the cap body 10, a hinge 30 for rotatably connecting the lid body 20 to the cap body 10, and a water stop packing 40 for sealing a space between the container body 2 and the cap body 10, wherein the cap body 10 has a liquid passing port 12 and a vent hole 13 which penetrate through the top wall part 10a in a vertical direction and communicate the inside and the outside of the container body 2, and are covered with the lid body 20, and the vent hole 13 is covered with the water stop packing 40 when viewed from below.SELECTED DRAWING: Figure 3
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Description

[Technical field]

[0001] The present invention relates to a cap unit and a beverage container. [Background technology]

[0002] Conventional cap units are known from, for example, Patent Documents 1 and 2. The cap unit includes a cap body that closes the upper opening of the container body, a lid that is rotatably connected to the cap body via a hinge, and a waterproof gasket that seals the gap between the container body and the cap body. The cap body has a liquid passage and an air vent that communicate between the inside and outside of the container body. By providing an air vent, it becomes possible to draw air into the container body when the contents (beverage) of the container body are discharged through the liquid passage opening, allowing the beverage to flow smoothly outside the container.

[0003] In particular, in a beverage container of the type in which the user holds the nozzle portion (drinking mouth) with a liquid passage formed therein, as in Patent Document 1, the pressure inside the container is reduced when the user drinks the beverage, so the need for a vent is high. When the lid is closed, the vent is blocked by an elastic member (ventilation sealing portion). This prevents the beverage from leaking out of the vent when the container falls over, for example. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 3937428 [Patent Document 2] JP 2010-235137 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, for example, when the beverage container is dropped in an upside-down position and hits the ground, etc., if the beverage moves forcefully in the upside-down direction, the beverage may leak out from the vent hole through the sealed portion between the vent hole and the ventilation seal. Also, when the beverage container is tilted forcefully when drinking a beverage with the lid open, the beverage may move forcefully in the upside-down direction and leak out through the inside (interior) of the vent hole. In order to prevent this leakage, for example, by positioning the air vent as far away as possible from the side opposite the tilt direction when drinking from the spout (liquid passage hole) (the hinge side, i.e., behind the drinking spout), it is thought that when the beverage container is tilted moderately, the inside of the air vent will be prevented from filling with beverage (i.e., the inside of the air vent will remain an air layer), and leakage of beverage from the air vent will be prevented. However, due to the size of the cap body, there is a limit to the position where the air vent can be provided, and when the beverage container is tilted significantly when drinking, the inside of the air vent will end up filling with beverage as well, and the effect of preventing leakage will not be obtained.

[0006] It is also possible to provide a valve member that can open and close the air vent, and to configure the valve member to open only when air is drawn through the air vent. However, in this case, problems arise such as a complicated structure, poor cleaning properties, and increased costs.

[0007] One of the objectives of the present invention is to provide a cap unit and a beverage container that have a simple structure and can prevent beverages from leaking out of the air hole, even if the beverage moves forcefully in an upside-down direction. [Means for solving the problem]

[0008] One aspect of the present invention is a cap unit to be attached to a container body having an open top, the cap unit comprising: a cap body that closes the top opening of the container body and has a top wall portion and a peripheral wall portion; a lid body that is disposed above the cap body; a hinge that rotatably connects the lid body to the cap body; and a water-stopping gasket that seals the gap between the container body and the cap body, the cap body having a liquid passage and an air vent that penetrate the top wall portion in the vertical direction to communicate between the inside and outside of the container body and are covered by the lid body, the air vent having a diameter of about 1 mm when viewed from below. Overlapping the entire hole It is covered with the watertight packing.

[0009] One aspect of the present invention is a cap unit that is attached to a container body having an open top, the cap unit comprising: a cap body that closes the top opening of the container body and has a top wall portion and a peripheral wall portion; a lid body that is disposed above the cap body; a hinge that rotatably connects the lid body to the cap body; and a waterproof gasket that seals the gap between the container body and the cap body. The cap body includes: a liquid passage hole and an air passage hole which penetrate the top wall portion in the vertical direction to communicate the inside and the outside of the container body and are covered by the lid; A cylindrical portion extending downward from the top wall portion and surrounding the liquid passage port when viewed from below. and, The cylindrical portion has a vertical ventilation groove recessed in a radial direction from a peripheral surface of the cylindrical portion and extending downward from the ventilation hole, The ventilation hole is covered by the watertight packing when viewed from below, The water stop packing further covers the vertical ventilation groove when viewed from below. cormorant.

[0010] In the above-mentioned cap unit, it is preferable that the tubular portion has a horizontal air groove that is recessed upward from the lower end surface of the tubular portion and extends radially, and that is connected to the vertical air groove, and that the water-stopping gasket faces the horizontal air groove from below.

[0011] One aspect of the present invention is a cap unit that is attached to a container body having an open top, the cap unit comprising: a cap body that closes the top opening of the container body and has a top wall portion and a peripheral wall portion; a lid body that is disposed above the cap body; a hinge that rotatably connects the lid body to the cap body; and a waterproof gasket that seals the gap between the container body and the cap body. The cap body includes: a liquid passage hole and an air passage hole which penetrate the top wall portion in the vertical direction to communicate the inside and the outside of the container body and are covered by the lid; A cylindrical portion extending downward from the top wall portion and surrounding the liquid passage port when viewed from below. and, having The ventilation hole is covered by the watertight packing when viewed from below, The water-stopping packing has a cylindrical packing peripheral wall that is fitted onto the cylindrical portion, an annular seal flange that extends radially outward from the packing peripheral wall and seals between the upper opening of the container body and the top wall of the cap body, and an extending flange that extends radially inward from a lower end of the packing peripheral wall, and at least the extending flange of the water-stopping packing overlaps with the air hole when viewed from below. do.

[0012] One aspect of the present invention is a cap unit to be attached to a container body having an open top, the cap unit comprising: a cap body that closes the top opening of the container body and has a top wall portion and a peripheral wall portion; a lid body that is disposed above the cap body; a hinge that rotatably connects the lid body to the cap body; and a water-stopping gasket that seals the gap between the container body and the cap body, the cap body having a liquid passage and an air vent that penetrate the top wall portion in the vertical direction to communicate with the inside and outside of the container body and are covered by the lid body, the air vent being covered by the water-stopping gasket when viewed from below,The water-stopping packing is elastically deformable and seals the air hole so as to allow communication between the air hole and the inside of the container body. do.

[0013] In the above cap unit, the center of the liquid passage port may be located forward of the central axis of the container body, and the air vent may be located between the liquid passage port and the hinge in the front-to-rear direction.

[0014] In the above cap unit, the cap body may be formed of a separate member from the top wall portion and have an elastically deformable nozzle portion having the liquid passage hole therein.

[0015] Moreover, one aspect of the beverage container of the present invention comprises the above-mentioned cap unit and the container body to which the cap unit is attached. Effect of the Invention

[0017] According to one aspect of the cap unit and beverage container of the present invention, the simple structure can prevent the beverage from leaking out of the air hole even if the beverage moves forcefully in an upside-down direction. [Brief description of the drawings]

[0018] [Figure 1] FIG. 1 is a perspective view showing a beverage container according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view showing a beverage container. [Diagram 3] FIG. 3 is a cross-sectional view showing a portion of the beverage container with the lid in a closed state (closed position). [Figure 4] FIG. 4 is a cross-sectional view showing a portion of the beverage container with the lid in an open state (open position). [Diagram 5] FIG. 5 is a perspective view showing a part of the cap body, and in detail shows a part of the cylindrical portion, the ventilation hole, the vertical ventilation groove, the horizontal ventilation groove, etc., but omits the illustration of the waterproof gasket. [Figure 6]FIG. 6 is a cross-sectional view showing a part of a beverage container according to a second embodiment of the present invention. [Figure 7] FIG. 7 is a perspective view showing a part of the cap body, and in detail shows a part of the cylindrical portion, the ventilation holes, the vertical ventilation grooves, etc., without showing the watertight gasket. [Figure 8] FIG. 8 is a cross-sectional view showing a part of a beverage container according to a third embodiment of the present invention. [Figure 9] FIG. 9 is a perspective view showing a part of the cap body, and in detail shows a part of the cylindrical portion and the ventilation holes, etc., without showing the watertight gasket. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] First Embodiment A cap unit 1A according to a first embodiment of the present invention and a beverage container 100 including the same will be described with reference to Figures 1 to 5. In the following description, the cap unit 1A may be simply referred to as a cap, and the beverage container 100 may be simply referred to as a container.

[0020] 1 and 2, a beverage container 100 of this embodiment includes a cap unit 1A and a cylindrical container body 2 with a bottom to which the cap unit 1A is detachably attached. The cap unit 1A includes a cylindrical cap body 10 having a top wall (ceiling wall), a cylindrical lid body 20 with a top, a first hinge (hinge) 30 that rotatably connects the lid body 20 to the cap body 10, a watertight packing 40 that seals the gap between the container body 2 and the cap body 10, and a lid lock mechanism 50. The cap unit 1A and the container body 2 are arranged coaxially with each other about a central axis C.

[0021] In this embodiment, the direction in which the central axis C extends is referred to as the up-down direction. In the up-down direction, the direction from the bottom surface 2a of the container body 2 to the lid top wall 20a of the lid body 20 is referred to as the upper side, and the direction from the lid top wall 20a to the bottom surface 2a is referred to as the lower side. The direction perpendicular to the central axis C is called the radial direction. Of the radial directions, the direction approaching the central axis C is called the radially inner direction or simply the inner direction, and the direction away from the central axis C is called the radially outer direction or simply the outer direction. The direction going around the central axis C is called the circumferential direction.

[0022] Among the radial directions, a direction passing through the first hinge 30 and the central axis C is referred to as a front-rear direction. Among the front-rear directions, a direction from the first hinge 30 toward the central axis C is referred to as a front side, and a direction from the central axis C toward the first hinge 30 is referred to as a rear side. In addition, the radial direction perpendicular to the front-rear direction is called the left-right direction. When the beverage container 100 is in an upright position with the lid top wall 20a of the lid body 20 facing vertically upward as shown in Fig. 2, the direction toward the left in the left-right direction is called the left side, and the direction toward the right is called the right side when viewed from the front. Although not specifically shown, the position (state) of the beverage container 100 in which the lid top wall 20a of the lid body 20 faces vertically downward is called the inverted position.

[0023] The central axis C may be referred to as a cap central axis C or a container central axis C, in order to distinguish it from a nozzle central axis and a hinge central axis A, which will be described later.

[0024] The beverage container 100 is capable of keeping a beverage (liquid content, liquid) contained in the container body 2 hot or cold by the container body 2 having a vacuum insulation structure. The container body 2 is a cylindrical shape with an open top and a closed bottom. Note that the container body 2 may contain contents other than a beverage.

[0025] Specifically, the container body 2 has a bottomed cylindrical outer container 4 and an inner container 5 made of, for example, stainless steel, and is configured as a double-structure container in which the mouths of the two containers are joined together with the inner container 5 housed inside the outer container 4.

[0026] 3, the upper cylindrical end portion of the inner container 5 is fitted into the upper cylindrical end portion of the outer container 4, and the upper cylindrical end portions are welded to each other in this fitted state. As a result, the upper opening 2d of the container body 2 has a pointed shape known as a "bowing welded structure."

[0027] In addition, a vacuum insulation layer 6 is provided between the outer container 4 and the inner container 5. The vacuum insulation layer 6 can be formed, for example, by blocking a vent hole provided in the center of the bottom surface of the outer container 4 in a chamber that has been depressurized (evacuated) to a high vacuum.

[0028] As shown in Figures 1 and 2, the container body 2 has a substantially disk-shaped bottom portion 2a, a substantially cylindrical body portion 2b whose lower end is connected to the outer periphery of the bottom portion 2a, a substantially cylindrical mouth / neck portion 2c that is arranged above the body portion 2b and has a smaller diameter than the body portion 2b, and a shoulder portion 2e that is substantially tapered and has a smaller diameter as it extends upward, connecting the upper end of the body portion 2b to the lower end of the mouth / neck portion 2c.

[0029] As shown in Fig. 3, the inner periphery of the mouth-neck part 2c is smaller in diameter than the inner periphery of the body part 2b. The outer periphery of the mouth-neck part 2c is provided with a male thread part 7. The upper end part of the mouth-neck part 2c opens in a circular shape as the upper opening part 2d of the container body 2.

[0030] Although the beverage container 100 of this embodiment has a generally cylindrical external shape as shown in Fig. 1, the external shape of the beverage container 100 is not particularly limited and can be appropriately changed according to the size, design, etc. Furthermore, the outer surfaces (surfaces) of the container body 2, the cap body 10, and the lid body 20 may be painted, printed, or the like.

[0031] As shown in FIG. 3, the cap unit 1A is attached to the mouth / neck portion 2c of the container body 2 and constitutes a plug for closing the upper opening 2d of the container body 2.

[0032] The cap body 10 is a member that closes the upper opening 2d of the container body 2, and is made of a heat-resistant resin such as polypropylene (PP). The cap body 10 has a top wall portion 10a, a peripheral wall portion 10b, and a cylindrical portion 14.

[0033] The top wall portion 10a covers the upper opening 2d of the container body 2 from above. The top wall portion 10a is in the shape of a substantially circular ring plate. The top wall portion 10a has a nozzle portion 11 that protrudes upward from the top wall portion 10a. The nozzle portion 11 is in the shape of a cylinder that extends in the vertical direction, and its nozzle central axis (not shown) is located forward of the central axis C of the container.

[0034] The nozzle portion 11 has a liquid passage port 12 therein. In other words, the cap body 10 has the liquid passage port 12. The liquid passage port 12 vertically penetrates the top wall portion 10a to connect the inside and outside of the container body 2. In other words, the liquid passage port 12 extends vertically inside the nozzle portion 11 and opens at the upper and lower ends of the nozzle portion 11. The center (center of opening) of the liquid passage port 12 corresponds to the nozzle central axis of the nozzle portion 11. The center of the liquid passage port 12 is located forward of the central axis C of the container body 2. In the beverage container 100 of this embodiment, the pressure inside the container body 2 is reduced by a user holding the nozzle portion 11 in his / her mouth and drinking a beverage.

[0035] The top wall portion 10a also has an air vent 13 that penetrates the top wall portion 10a in the vertical direction to communicate between the inside and the outside of the container body 2. In other words, the cap body 10 has an air vent 13. The air vent 13 is disposed between the nozzle portion 11 (liquid passage port 12) and the first hinge 30 in the front-rear direction. In this embodiment, the air vent 13 is a circular hole, and is located rearward of the central axis C of the container.

[0036] 3, the liquid passage port 12 and the air vent hole 13 are covered by the cover body 20. When the cover body 20 is in an open state as shown in FIG. 4, the liquid passage port 12 and the air vent hole 13 are open toward the upper side.

[0037] As shown in Fig. 3, the peripheral wall portion 10b is tubular and extends downward from the outer periphery of the top wall portion 10a. The peripheral wall portion 10b surrounds the mouth / neck portion 2c from the radially outer side over the entire circumferential direction. The lower end of the peripheral wall portion 10b faces or contacts the shoulder portion 2e from above with a gap therebetween. The peripheral wall portion 10b is substantially cylindrical and extends vertically so as to be continuous with the trunk portion 2b of the container body 2.

[0038] The peripheral wall portion 10b has an internal thread portion 15 on its inner peripheral surface. The internal thread portion 15 is screwed into the external thread portion 7 of the mouth-neck portion 2c. In other words, the cap body 10 is detachably attached to the outside of the mouth-neck portion 2c by screwing, with the cap body 10 covering the upper opening 2d of the container body 2.

[0039] The tubular portion 14 is cylindrical about the central axis C and extends downward from the top wall portion 10a. When viewed from below, the tubular portion 14 has an annular shape surrounding the liquid passage port 12. Specifically, when viewed from below, the tubular portion 14 surrounds the liquid passage port 12 from the radial outside over the entire circumferential direction. The tubular portion 14 is inserted into the mouth neck portion 2c.

[0040] As shown in FIGS. 3 and 5, the tubular portion 14 has a vertical ventilation groove 16 and a horizontal ventilation groove 17. The vertical air groove 16 is disposed at the rear end of the tubular portion 14. The vertical air groove 16 is recessed radially from the peripheral surface of the tubular portion 14 and extends downward from the ventilation hole 13. In this embodiment, the vertical air groove 16 is recessed radially inward from the peripheral surface of the tubular portion 14 and extends in the up-down direction. In the illustrated example, the vertical air groove 16 is a round groove having a concave arc-shaped cross section. The upper end of the vertical air groove 16 is connected to the lower end of the ventilation hole 13.

[0041] The horizontal air vent groove 17 is disposed at the rear end of the tubular portion 14. The horizontal air vent groove 17 is recessed upward from the lower end surface of the tubular portion 14 and extends in the radial direction. The radial outer end of the horizontal air vent groove 17 is connected to the lower end of the vertical air vent groove 16. In other words, the horizontal air vent groove 17 is connected to the ventilation hole 13 via the vertical air vent groove 16. In the illustrated example, the horizontal air vent groove 17 is a round groove having a concave arc-shaped cross section.

[0042] In this embodiment, the radial dimension, i.e., thickness, of the tubular portion 14 at the portion where the vertical air grooves 16 and the horizontal air grooves 17 are arranged in the circumferential direction is larger than the thickness of the other portions. The above-mentioned portion (thick portion) of the tubular portion 14 protrudes radially inward from the inner circumferential surface of the other portions.

[0043] 3, the lid body 20 is disposed on the upper side of the cap body 10. The lid body 20 is a member that covers the upper part of the cap body 10 and opens and closes the liquid passage port 12 and the air vent 13. The lid body 20 has a portion made of a heat-resistant resin such as polypropylene (PP) (for example, a portion other than the liquid passage sealing portion 21 and the air passage sealing portion 22 described below). The lid body 20 has a lid top wall portion 20a, a lid peripheral wall portion 20b, a liquid passage sealing portion 21, and a ventilation sealing portion 22.

[0044] The lid top wall portion 20a is disposed above the top wall portion 10a of the cap body 10. In this embodiment, the lid top wall portion 20a is a plate extending in the front-rear direction and inclines upward as it extends from the first hinge 30 toward the front side.

[0045] The lid top wall portion 20a has a hole portion 20c that penetrates the lid top wall portion 20a in the vertical direction, and a support tube 20d that protrudes downward from the lid top wall portion 20a and is positioned between the hole portion 20c and the first hinge 30 in the front-to-rear direction.

[0046] The lid peripheral wall portion 20b is cylindrical and extends downward from the outer periphery of the lid top wall portion 20a. The lid peripheral wall portion 20b is disposed so as to surround the periphery of the top wall portion 10a of the cap body 10.

[0047] The liquid passage sealing part 21 is made of an elastic material such as heat-resistant rubber or elastomer, for example, silicone rubber. That is, the liquid passage sealing part 21 is elastically deformable. The liquid passage sealing part 21 is detachably attached to the lid top wall part 20a of the lid body 20. When the lid body 20 is in the closed state, the liquid passage sealing part 21 is in liquid-tight contact with the upper opening of the nozzle part 11. In this way, the liquid passage sealing part 21 releasably closes the liquid passage port 12 from above. The liquid passage sealing part 21 is a plug-shaped seal member that closes the liquid passage port 12 of the nozzle part 11.

[0048] The liquid seal 21 has an axis 21a that fits into the hole 20c, and a plug 21b that is connected to the lower end of the axis 21a and has a generally dome-like shape that protrudes downward. The liquid seal 21 is detachable from the hole 20c. Therefore, the lid 20 and the liquid seal 21 can be washed separately, and the space between the lid 20 and the liquid seal 21 can be kept hygienic.

[0049] 3, the plug portion 21b of the liquid passage sealing portion 21 abuts against the upper end opening edge of the nozzle portion 11, i.e., the periphery of the opening of the liquid passage port 12, and this plug portion 21b elastically deforms and comes into close contact with the periphery of the opening of the liquid passage port 12. This makes it possible for the liquid passage port 12 of the nozzle portion 11 to be closed by the liquid passage sealing portion 21.

[0050] The ventilation seal 22 is made of an elastic material such as heat-resistant rubber or elastomer, for example silicone rubber. That is, the ventilation seal 22 is elastically deformable. The ventilation seal 22 is detachably attached to the lid top wall 20a of the lid 20. When the lid 20 is in the closed state, the ventilation seal 22 comes into liquid-tight contact with the upper opening of the ventilation hole 13. In this way, the ventilation seal 22 closes the ventilation hole 13 from above in an openable manner. The ventilation seal 22 is a cylindrical seal member with a bottom that closes the ventilation hole 13.

[0051] The ventilation seal 22 is fitted onto the support tube 20d. The ventilation seal 22 is detachable from the support tube 20d. Therefore, the lid 20 and the ventilation seal 22 can be washed separately, and the space between the lid 20 and the ventilation seal 22 can be kept hygienic.

[0052] In this cap unit 1A, when the lid body 20 is in the closed position, the bottom of the ventilation seal part 22 abuts against the periphery of the opening of the ventilation hole 13, and while this bottom part elastically deforms, it comes into close contact with the periphery of the opening of the ventilation hole 13. This makes it possible to close the ventilation hole 13 with the ventilation seal part 22.

[0053] In this embodiment, the liquid passage seal portion 21 and the air passage seal portion 22 are integrally formed from a single member, which reduces the number of parts and prevents the loss of members during cleaning or the like.

[0054] The first hinge 30 connects the upper rear end of the cap body 10 and the rear end of the lid body 20 so as to be relatively rotatable about a hinge central axis A. The hinge central axis A of the first hinge 30 extends in the left-right direction. The lid body 20 is connected to the cap body 10 via the first hinge 30, and is thereby rotatable between a position (closed position) in which the liquid passage hole 12 and the air hole 13 shown in FIG. 3 are closed, and a position (open position) in which the liquid passage hole 12 and the air hole 13 are opened, as shown in FIG. 4.

[0055] Although not specifically shown, the first hinge 30 has a torsion coil spring that extends spirally around the hinge central axis A. The torsion coil spring biases the lid body 20 in the opening direction relative to the cap body 10. In other words, a biasing force is applied to the lid body 20 in the opening direction about the hinge central axis A. Therefore, when the locked state by the lid locking mechanism 50 is released, the lid body 20 rotates from the closed position to the open position.

[0056] As shown in Fig. 3, the waterproof gasket 40 is detachably attached to the inside of the cap body 10. The waterproof gasket 40 is a ring-shaped sealing member that seals (stops water) between the container body 2 and the cap body 10, and is made of an elastic member such as a heat-resistant rubber, elastomer, for example, silicone rubber. That is, the waterproof gasket 40 is elastically deformable. Specifically, the waterproof gasket 40 of this embodiment liquid-tightly seals the gap between the upper opening 2d of the container body 2 and the top wall portion 10a of the cap body 10. In FIG. 3, a part of the watertight gasket 40 is shown by a two-dot chain line (phantom line) as a shape before elastic deformation.

[0057] The watertight gasket 40 is attached to the cap body 10 in a state where it is fitted onto the cylindrical portion 14. Moreover, the watertight gasket 40 can be removed from the cylindrical portion 14. This allows the cap body 10 and the watertight gasket 40 to be washed separately, and the space between the cap body 10 and the watertight gasket 40 can be kept hygienic.

[0058] The watertight gasket 40 has a cylindrical gasket peripheral wall 41 that is fitted onto the cylindrical portion 14, an annular seal flange 42 that extends radially outward from the gasket peripheral wall 41 and seals the space between the upper opening 2d of the container body 2 and the top wall portion 10a of the cap body 10, and an extending flange portion 43 that extends radially inward from the lower end of the gasket peripheral wall 41.

[0059] The packing peripheral wall 41 extends in the vertical direction around the central axis C, and is fitted to the outside of the tubular portion 14. The inner circumferential surface of the packing peripheral wall 41 contacts the outer circumferential surface of the tubular portion 14. A flow path (vertical air passage) through which air can flow is provided between the inner circumferential surface of the packing peripheral wall 41 and the vertical air groove 16 of the tubular portion 14. The vertical air passage extends in the vertical direction and communicates with the air hole 13. The lower end of the packing peripheral wall 41 protrudes downward beyond the lower end of the tubular portion 14.

[0060] The seal flange 42 has a substantially annular plate shape centered on the central axis C. The seal flange 42 protrudes radially outward from an upper end portion of the packing peripheral wall 41 and extends in the circumferential direction. 3, in this embodiment, the seal flange 42 has a groove portion 42a recessed radially inward from the outer circumferential surface of the seal flange 42 and extending circumferentially, and a pair of flange portions 42b disposed above and below the groove portion 42a. Therefore, the seal flange 42 has a cross-sectional shape (longitudinal cross-sectional shape) parallel to the central axis C that is generally C-shaped or generally U-shaped and opens radially outward.

[0061] Of the pair of flange portions 42b, the upper surface of the upper flange portion contacts the lower surface of the top wall portion 10a. In other words, the upper surface of the seal flange 42 contacts the lower surface of the top wall portion 10a. The thickness (plate thickness) of one of the pair of flange portions 42b is thinner than the thickness of the packing peripheral wall 41. The pair of flange portions 42b are particularly susceptible to elastic deformation among the watertight packing 40, and are designed to easily come into close contact with the upper opening 2d and the top wall portion 10a, respectively, thereby providing a stable seal between them.

[0062] The extending flange 43 is an annular plate centered on the central axis C. The extending flange 43 protrudes radially inward from the lower end of the packing peripheral wall 41 and extends in the circumferential direction. The extending flange 43 is disposed directly below the peripheral wall of the tubular portion 14. A gap is provided in the vertical direction between the upper surface of the extending flange 43 and the lower end surface of the tubular portion 14. For this reason, when assembling the watertight packing 40, the extending flange 43 is prevented from abutting against the lower end surface of the tubular portion 14 due to, for example, manufacturing errors of the components, and defects such as unstable adhesion between the seal flange 42 and the top wall portion 10a are suppressed.

[0063] Furthermore, the inner periphery of the extending flange 43 protrudes slightly radially inward or is flush with the portions of the tube portion 14 other than the portion (thick portion at the rear end of the tube portion 14) where the vertical air grooves 16 and the horizontal air grooves 17 are arranged in the circumferential direction. Therefore, when a user drinks a beverage, the beverage in the container body 2 tilted forward easily climbs over the inner periphery of the extending flange 43 toward the liquid passage port 12, and the beverage flows out smoothly from the liquid passage port 12, making it easy to drink the beverage.

[0064] In addition, a flow path (horizontal air passage) through which air can flow is provided between the upper surface of the extended flange portion 43 and the horizontal air groove 17 of the tube portion 14. The horizontal air passage extends in the radial direction. The radial outer end of the horizontal air passage is connected to the vertical air passage. That is, the horizontal air passage communicates with the ventilation hole 13 via the vertical air passage. The radial inner end of the horizontal air passage opens toward the inside of the tube portion 14 and communicates with the inside of the container body 2. This allows communication between the outside (outside of the container, outside of the cap) and the inside of the container body 2, so that when the pressure inside the container body 2 is reduced, such as when a user holds the nozzle portion 11 in his mouth and drinks a beverage, air is sucked into the container body 2 through the ventilation hole 13.

[0065] The watertight gasket 40 covers the air vent hole 13 when viewed from below. In other words, the air vent hole 13 is covered by the watertight gasket 40 when viewed from below. The watertight gasket 40 also covers the vertical air groove 16 (vertical air passage) and at least a part of the horizontal air groove 17 (horizontal air passage) when viewed from below. The extended flange portion 43 also faces the horizontal air groove 17 from below with a gap therebetween. In other words, the watertight gasket 40 faces the horizontal air groove 17 from below.

[0066] Specifically, at least the extending flange 43 of the watertight packing 40 overlaps with the air vent 13 when viewed from below. In this embodiment, the packing peripheral wall 41 and the extending flange 43 of the watertight packing 40 overlap with the air vent 13 when viewed from below. The air vent 13 is covered by the packing peripheral wall 41 and the extending flange 43 when viewed from below.

[0067] Further, the extending flange portion 43 overlaps with the vertical ventilation groove 16 when viewed from below. The vertical ventilation groove 16 is covered by the extending flange portion 43 when viewed from below. Further, the extending flange portion 43 overlaps with the horizontal ventilation groove 17 when viewed from below. The horizontal ventilation groove 17 is at least partially covered by the extending flange portion 43 when viewed from below.

[0068] 1, 3 and 4, the lid locking mechanism 50 fixes the lid body 20 in the above-mentioned closed position (closed state) relative to the cap body 10 against the rotational biasing force in the opening direction about the first hinge 30 (hinge central axis A). The lid locking mechanism 50 is disposed at the front end of the cap unit 1A. Note that Figs. 1 and 3 show a state in which the lid body 20 is fixed in the closed position by the lid locking mechanism 50 (locked state), and Fig. 4 shows a state in which the fixation of the lid body 20 by the lid locking mechanism 50 is released (unlocked state).

[0069] The lid locking mechanism 50 has a second hinge 55 whose hinge central axis (not shown) extends in the left-right direction, a locking member 52 that can swing around the hinge central axis of the second hinge 55, and a ring stopper 54 that can rotate freely around the hinge central axis of the second hinge 55. The second hinge 55 also has an inner hinge portion 51 and outer hinge portions 53 located on both outer sides of the inner hinge portion 51 in the left-right direction. The inner hinge portion 51 and the outer hinge portion 53 are arranged coaxially with each other, with the hinge central axis of the second hinge 55 as a common axis.

[0070] The locking member 52 is attached to the cap body 10 via an inner hinge portion 51 so as to be freely swingable. The ring stopper 54 is attached to the cap body 10 via an outer hinge portion 53 so as to be freely rotatable.

[0071] The inner hinge portion 51 is provided on the front surface of the peripheral wall portion 10b of the cap body 10. The inner hinge portion 51 is disposed inside the outer hinge portion 53 in the left-right direction (i.e., on the central axis C side). The locking member 52 is supported by the inner hinge portion 51 so as to be able to swing freely in the front-rear direction. The locking member 52 has an upper arm portion 52a extending upward from the hinge central axis of the second hinge 55, and a lower arm portion 52b extending downward from the hinge central axis of the second hinge 55. A hook portion 56 is provided at the tip portion of the upper arm portion 52a (the upper end portion of the locking member 52) so as to protrude toward the rear side. A compression coil spring 57 is provided between the lower arm portion 52b and the peripheral wall portion 10b in a state compressed in the front-rear direction.

[0072] The outer hinge portion 53 is provided on the front surface of the peripheral wall portion 10b of the cap body 10. The ring stopper 54 is made of a curved, substantially C-shaped member, and both ends thereof are supported by the outer hinge portion 53 so as to be rotatable in the vertical direction.

[0073] The lid lock mechanism 50 also has a lock receiving portion 58 to which the hook portion 56 of the locking member 52 is engaged, and a stopper receiving portion 59 to which the ring stopper 54 is hooked. The lock receiving portion 58 is in the form of a claw that protrudes forward from the lower end portion on the front side of the lid body 20. The stopper receiving portion 59 is in the form of a roughly semicircular ring that fits the shape of the inner periphery of the ring stopper 54, and protrudes forward from a position on the front surface of the lid body 20 that surrounds the periphery of the lock receiving portion 58.

[0074] In this lid locking mechanism 50, when the lid body 20 is in the closed position, the hook portion 56 of the locking member 52 engages with the lock receiving portion 58, thereby fixing the lid body 20 to the cap body 10 against the rotational biasing force of the first hinge 30 in the opening direction.

[0075] From this state, the user compresses the compression coil spring 57 while pushing the lower arm portion 52b of the locking member 52 rearward, thereby releasing the engagement state of the hook portion 56 with the lock receiving portion 58. This allows the lid body 20, which is biased in the opening direction, to be rotated to the open position.

[0076] Furthermore, in the lid locking mechanism 50, when the lid 20 is in the closed position, the ring stopper 54 is latched to the stopper receiving portion 59, thereby preventing the lid 20 from rotating in the opening direction. This makes it possible to prevent the lid 20 from being opened by unnecessary (unintended) operation of the locking member 52.

[0077] According to the cap unit 1A and the beverage container 100 of the present embodiment described above, the ventilation hole 13 of the cap body 10 is covered by the water stop packing 40 when viewed from below. Therefore, even if the beverage container 100 is tilted forcefully when drinking a beverage, or if the beverage container 100 falls in an upside-down position and hits the ground, the beverage in the container body 2 is prevented from entering the ventilation hole 13 forcefully. That is, even if the beverage in the container body 2 moves forcefully toward the cap unit 1A (i.e., in the upside-down direction), the water stop packing 40 receives the impact of the beverage before it reaches the ventilation hole 13, thereby reducing the momentum of the beverage. Therefore, when the lid body 20 is in an open state, the beverage can be prevented from leaking through the ventilation hole 13, and even when the lid body 20 is in a closed state, the beverage can be prevented from leaking from the sealed portion between the ventilation hole 13 and the ventilation seal portion 22.

[0078] Moreover, in this embodiment, the watertight gasket 40 that seals between the container body 2 and the cap body 10 is used to prevent the beverage from leaking out from the air vent 13. In other words, by imparting multiple functions to the watertight gasket 40, an increase in the number of parts is suppressed. Specifically, in order to prevent the above leakage, for example, there is no need to use a complex structure in which a valve member that can open and close the air vent is newly provided and the valve member is opened only when air is drawn in from the air vent. According to this embodiment, the structure can be simplified without adding any new members while suppressing leakage of beverage from the ventilation hole 13. Therefore, the washability of the container can be maintained well and an increase in costs can be suppressed.

[0079] As described above, according to this embodiment, even if the beverage in the container body 2 moves forcefully toward the cap unit 1A, the simple structure can stably prevent the beverage from leaking out of the ventilation hole 13.

[0080] Furthermore, in this embodiment, the water stop gasket 40 covers the vertical ventilation groove 16 (vertical ventilation path) from below together with the ventilation hole 13. Therefore, when the beverage container 100 is tilted forcefully when drinking a beverage, or when a strong impact is applied to the container in the upside-down direction, the momentum of the beverage in the container body 2 is reduced by the water stop gasket 40, and the beverage is prevented from forcefully entering the ventilation hole 13 through the vertical ventilation groove 16. Therefore, the beverage can be more stably prevented from leaking from the ventilation hole 13.

[0081] In this embodiment, the water stop gasket 40 is disposed facing the horizontal ventilation groove 17 (horizontal ventilation passage) from below. Therefore, when the beverage container 100 is tilted forcefully when drinking a beverage or when the container receives a strong impact in an upside-down direction, the water stop gasket 40 reduces the momentum of the beverage in the container body 2, and the beverage is prevented from forcefully entering the ventilation hole 13 through the vertical ventilation groove 16 from the horizontal ventilation groove 17.

[0082] In this embodiment, the watertight gasket 40 has a gasket peripheral wall 41 , a seal flange 42 , and an extending flange portion 43 . In this case, the sealing flange 42 of the water-stopping gasket 40 seals the space between the upper opening 2d of the container body 2 and the top wall portion 10a of the cap body 10, while the extended flange portion 43 reliably prevents beverage from leaking out of the air hole 13. Furthermore, when fitting the watertight gasket 40 into the tubular portion 14, the extended flange portion 43 can be used as a pressing allowance, making it easy to press the watertight gasket 40 until it contacts the top wall portion 10a of the cap body 10. Furthermore, when removing the watertight gasket 40 from the tubular portion 14, the extended flange portion 43 can be used as a gripping allowance, making it easy to remove the watertight gasket 40.

[0083] <Second embodiment> Next, a cap unit 1B according to a second embodiment of the present invention and a beverage container 100 including the cap unit 1B will be described with reference to Fig. 6 and Fig. 7. In this embodiment, the same configurations as those in the above-mentioned embodiment are given the same names and symbols, and the description thereof will be omitted.

[0084] The cap unit 1B of this embodiment differs from the cap unit 1A described in the above embodiment in the configurations of the tubular portion 14 and the watertight gasket 40.

[0085] 6 and 7, in this embodiment, the vertical ventilation groove 16 of the tubular portion 14 is recessed radially outward from the inner circumferential surface of the tubular portion 14 and extends downward from the ventilation hole 13. Also, in this embodiment, the tubular portion 14 does not have a horizontal ventilation groove 17 (horizontal ventilation path).

[0086] The cylindrical portion 14 also has a stepped surface 14a. The stepped surface 14a is located in a portion of the cylindrical portion 14 where the vertical air grooves 16 are arranged in the circumferential direction (the thick-walled portion at the rear end of the cylindrical portion 14). The stepped surface 14a extends inward from the inner peripheral surface of the cylindrical portion 14, is located above the lower end surface of the cylindrical portion 14, and faces downward. The stepped surface 14a is flat and extends in a direction perpendicular to the central axis C.

[0087] Further, the ventilation hole 13 has a portion (upper portion) that penetrates the top wall portion 10a in the vertical direction, and a portion (lower portion) that extends downward from this portion and is located within the thick-walled portion of the cylindrical portion 14. The lower end of the ventilation hole 13 opens to the step surface 14a. That is, in this embodiment, a part of the ventilation hole 13 extends in the vertical direction within the peripheral wall of the cylindrical portion 14.

[0088] The extending flange portion 43 of the watertight packing 40 has a horizontal extending portion 43a and a vertical extending portion 43b. The laterally extending portion 43a extends radially inward from the lower end portion of the packing peripheral wall 41. The laterally extending portion 43a has an annular plate shape centered on the central axis C. A gap is provided between an upper surface of the laterally extending portion 43a and a lower end surface of the cylindrical portion 14.

[0089] The vertical extension portion 43b protrudes upward from the inner peripheral portion of the horizontal extension portion 43a. The vertical extension portion 43b is cylindrical about the central axis C and extends in the up-down direction. In the radial direction, the lower end portion of the tube portion 14 is disposed between the vertical extension portion 43b and the packing peripheral wall 41. The outer peripheral surface of the vertical extension portion 43b and the inner peripheral surface of the lower end portion of the tube portion 14 are in contact with each other or face each other with a gap therebetween.

[0090] A flow path (vertical air passage) through which air can flow is provided between the outer circumferential surface of the vertical extension portion 43b and the vertical air passage groove 16 of the tube portion 14. The vertical air passage is connected to the lower end of the ventilation hole 13. In this embodiment, the upper end surface of the vertical extension portion 43b contacts the step surface 14a. As a result, the watertight gasket 40 seals the vent hole 13 and the inside of the container body 2 so that communication between them is possible.

[0091] According to the cap unit 1B and beverage container 100 of this embodiment described above, the same effects as those of the above-mentioned embodiment can be obtained.

[0092] In this embodiment, the elastically deformable watertight gasket 40 seals the vent hole 13 and the inside of the container body 2 so as to allow communication between them. In this case, the water stop packing 40 can more stably prevent the beverage from leaking from the ventilation hole 13. For example, even if a user holds the nozzle part 11 in his / her mouth and tilts the beverage container 100, and takes a long time to drink the beverage in the container body 2, the gap between the ventilation hole 13 and the inside of the container body 2 is sealed, so that the beverage can be prevented from leaking from the ventilation hole 13. When the user holds the nozzle part 11 in his / her mouth and drinks the beverage in the container body 2 through the liquid passage port 12, and the pressure inside the container body 2 is reduced, causing air to be sucked into the container body 2 through the ventilation hole 13, the water stop packing 40 elastically deforms, and the outside and the inside of the container body 2 communicate with each other through the ventilation hole 13. When the intake of air into the container body 2 from the ventilation hole 13 is stopped, the water stop packing 40 is restored to its original shape, and the gap between the ventilation hole 13 and the inside of the container body 2 is sealed again. That is, in this embodiment, the watertight gasket 40 acts (functions) like an on-off valve, and therefore the above-mentioned effects of the present invention become more pronounced due to the simple structure.

[0093] In addition, in this embodiment, since the rigidity of the extended flange 43 is increased, when fitting the watertight gasket 40 into the tubular portion 14, the extended flange 43 can be used as a pressing allowance, making it easier to press the watertight gasket 40 in. Also, when removing the watertight gasket 40 from the tubular portion 14, the highly rigid extended flange 43 can be used as a gripping allowance, making it easier to remove the watertight gasket 40.

[0094] <Third embodiment> Next, a cap unit 1C according to a third embodiment of the present invention and a beverage container 100 including the same will be described with reference to Figures 8 and 9. In this embodiment, the same configurations as those in the above-described embodiment will be given the same names and symbols, and the description thereof will be omitted.

[0095] The cap unit 1C of this embodiment differs from the cap units 1A and 1B described in the above-described embodiments in the configurations of the tubular portion 14 and the watertight gasket 40.

[0096] 8 and 9, in this embodiment, the tubular portion 14 does not have the vertical air groove 16 (vertical air passage) and the horizontal air groove 17 (horizontal air passage). In addition, the lower end surface of the thick-walled portion at the rear end of the tubular portion 14 protrudes downward further than the lower end surface of the portion other than the thick-walled portion of the tubular portion 14. The lower end surface of the thick-walled portion of the tubular portion 14 is flat and extends in a direction perpendicular to the central axis C.

[0097] Further, the ventilation hole 13 has a portion (upper portion) that penetrates the top wall portion 10a in the vertical direction, and a portion (lower portion) that extends downward from the upper portion and penetrates the thick portion of the cylindrical portion 14 in the vertical direction. The lower end of the ventilation hole 13 opens into the lower end surface of the thick portion of the cylindrical portion 14.

[0098] The extending flange 43 of the watertight gasket 40 protrudes radially inward from the portion of the tubular portion 14 other than the thick portion. In the illustrated example, the amount by which the extending flange 43 protrudes inward from the inner circumferential surface of the portion of the tubular portion 14 other than the thick portion is greater than the thickness of the portion. This increases the rigidity of the extending flange 43.

[0099] Additionally, the upper surface of the extending flange 43 contacts the lower end surface of the thick-walled portion of the tubular portion 14. As a result, the extending flange 43 closes the opening at the lower end of the vent hole 13. That is, the watertight gasket 40 seals so as to allow communication between the vent hole 13 and the inside of the container body 2. Additionally, a gap is provided between the upper surface of the extending flange 43 and the lower end surface of the tubular portion 14 other than the thick-walled portion.

[0100] According to the cap unit 1C and beverage container 100 of this embodiment described above, the same effects as those of the above-mentioned embodiment can be obtained.

[0101] The present invention is not limited to the above-described embodiment, and the configuration may be modified within the scope of the present invention, for example as described below.

[0102] In the first embodiment, an example in which a gap is provided between the upper surface of the extending flange portion 43 of the water stop packing 40 and the lower end surface of the tube portion 14 has been given, but the present invention is not limited thereto. That is, for example, when the manufacturing error of the members is sufficiently small, the upper surface of the extending flange portion 43 may be brought into contact with the lower end surface of the tube portion 14. In the first embodiment, since the horizontal air vent groove 17 (horizontal air passage) is provided in the lower end surface of the tube portion 14, air is stably sucked into the container body 2 from the ventilation hole 13 via the vertical air vent groove 16 and the horizontal air vent groove 17 regardless of the amount of elastic deformation of the water stop packing 40, even in a configuration in which the upper surface of the extending flange portion 43 is in contact with the lower end surface of the tube portion 14.

[0103] In the above embodiment, the cap body 10 has a nozzle portion 11 protruding upward from the top wall portion 10a of the cap body 10 and a liquid passage port 12 that vertically penetrates the inside of the nozzle portion 11 to communicate with the inside and outside of the container body 2, but the present invention is not limited to this. That is, holding the nozzle portion 11 in one's mouth and drinking the beverage in the container body 2 through the liquid passage port 12 can have the same effect even if the nozzle portion 11 is made of an elastic material. Although not shown in particular, the present invention can be similarly applied to a structure in which the cap body 10 has an elastically deformable nozzle portion 11 that is detachably attached to the top wall portion 10a, a liquid passage port 12 that vertically penetrates the inside of the nozzle portion 11 to communicate with the inside and outside of the container body 2, and a straw member that is attached continuously to the lower end of the liquid passage port 12. In this case, the top wall portion 10a of the cap body 10, the nozzle portion 11, and the straw member are formed as separate members.

[0104] In the above embodiment, the present invention is applied to a beverage container 100 having a heat retention / cold retention function provided by a container body 2 having a vacuum insulation structure, but the present invention is not limited to this. That is, the present invention can be widely applied to a capped container in which a cap unit is detachably attached to the mouth and neck portion of the container body.

[0105] The present invention may be combined with the various configurations described in the above-mentioned embodiments and modifications, and may include additions, omissions, substitutions, and other modifications, without departing from the spirit of the present invention. The present invention is not limited to the above-mentioned embodiments, but is limited only by the claims. [Explanation of symbols]

[0106] DESCRIPTION OF SYMBOLS 1A, 1B, 1C...cap unit, 2...container body, 2d...upper opening, 10...cap body, 10a...top wall portion, 10b...circumferential wall portion, 11...nozzle portion, 12...liquid passage port, 13...ventilation hole, 14...tubular portion, 16...vertical ventilation groove, 17...horizontal ventilation groove, 20...lid body, 22...ventilation sealing portion, 30...first hinge (hinge), 40...water-stopping packing, 41...packing peripheral wall, 42...seal flange, 43...extending flange portion, 100...beverage container, C...center axis

Claims

1. A cap unit to be attached to a container body having an open top, a cap body that closes an upper opening of the container body and has a top wall portion and a peripheral wall portion; A lid body disposed on an upper side of the cap body; a hinge that rotatably connects the lid body to the cap body; A waterproof packing that seals the gap between the container body and the cap body, the cap body has a liquid passage and an air vent that penetrate the top wall portion in the vertical direction to communicate with the inside and the outside of the container body and are covered by the lid body; When viewed from below, the ventilation hole is entirely covered by the watertight packing. Cap unit.

2. A cap unit to be attached to a container body having an opening at the top, a cap body that closes an upper opening of the container body and has a top wall portion and a peripheral wall portion; A lid body disposed on an upper side of the cap body; a hinge that rotatably connects the lid body to the cap body; A waterproof packing that seals the gap between the container body and the cap body, The cap body includes: a liquid passage hole and an air passage hole which penetrate the top wall portion in the vertical direction to communicate the inside and the outside of the container body and are covered by the lid; a cylindrical portion extending downward from the top wall portion and surrounding the liquid passage hole when viewed from below, The cylindrical portion has a vertical ventilation groove that is recessed in a radial direction from a peripheral surface of the cylindrical portion and extends downward from the ventilation hole, The ventilation hole is covered by the watertight packing when viewed from below, The water-stopping packing further covers the vertical ventilation groove when viewed from below. Cap unit.

3. The cylindrical portion has a horizontal air groove recessed upward from a lower end surface of the cylindrical portion, extending in a radial direction, and connected to the vertical air groove, The water-stopping gasket faces the horizontal ventilation groove from below. The cap unit according to claim 2 .

4. A cap unit to be attached to a container body having an opening at the top, a cap body that closes an upper opening of the container body and has a top wall portion and a peripheral wall portion; A lid body disposed on an upper side of the cap body; a hinge that rotatably connects the lid body to the cap body; A waterproof packing that seals the gap between the container body and the cap body, The cap body includes: a liquid passage hole and an air passage hole which penetrate the top wall portion in the vertical direction to communicate the inside and the outside of the container body and are covered by the lid; a cylindrical portion extending downward from the top wall portion and surrounding the liquid passage hole when viewed from below, The ventilation hole is covered by the watertight packing when viewed from below, The watertight packing is A cylindrical packing peripheral wall fitted onto the cylindrical portion; an annular seal flange extending radially outward from the packing peripheral wall to seal between an upper opening of the container body and a top wall of the cap body; an extending flange portion extending radially inward from a lower end portion of the packing peripheral wall, At least the extended flange portion of the water-stopping gasket overlaps with the air hole when viewed from below. Cap unit.

5. A cap unit to be attached to a container body having an opening at the top, a cap body that closes an upper opening of the container body and has a top wall portion and a peripheral wall portion; A lid body disposed on an upper side of the cap body; a hinge that rotatably connects the lid body to the cap body; A waterproof packing that seals the gap between the container body and the cap body, the cap body has a liquid passage and an air vent that penetrate the top wall portion in the vertical direction to communicate with the inside and the outside of the container body and are covered by the lid body; The ventilation hole is covered by the watertight packing when viewed from below, The water-stopping gasket is elastically deformable and seals the air vent hole and the inside of the container body so as to allow communication between the air vent hole and the inside of the container body. Cap unit.

6. the center of the liquid passage port is located forward of the central axis of the container body, The air vent is located between the liquid passage and the hinge in the front-rear direction. The cap unit according to any one of claims 1 to 5.

7. the cap body is formed of a separate member from the top wall portion, and has an elastically deformable nozzle portion having the liquid passage hole therein; The cap unit according to claim 1 .

8. A cap unit according to any one of claims 1 to 7, The container body to which the cap unit is attached. Beverage container.

Citation Information

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