Cap unit and beverage container

Abstract

The present application provides a cap unit and a beverage container. It is provided with: a cap main body (10) having a liquid passage (12); a cover (20) covering the liquid passage (12) from the upper side; a hinge (30); a water-stopping gasket (70) sealing between the cover (20) and the container main body (2); and a cap locking mechanism (40) fixing the cover (20) relative to the cap main body (10) at the closed position, the cap locking mechanism (40) having a locking portion (47) locked with the cover (20) or the cap main body (10), the cap main body (10) is arranged on the upper side of the upper opening portion (2d) of the container main body (2), and has a drinking opening portion (11) with the liquid passage (12) formed inside, the drinking opening portion (11) extends in the up-down direction in a manner connected with the upper opening portion (2d), and the front portion of the drinking opening portion (11) protrudes more upward than the locking portion (47).

Description

Technical Field

[0001] This invention relates to cap units and beverage containers. Background Technology

[0002] Previously, cap units were installed on the main body of a container with an open top in a way that allowed for easy loading and unloading, such as the cap units described in known patent documents 1 and 2.

[0003] Regarding the cap unit described in Patent Document 1, a mouth-forming component forming a drinking or pouring spout is detachably mounted at the opening of the cap body. A mouth-removal mechanism is provided between the cap body and the mouth-forming component for detachably mounting the mouth-forming component to the opening of the cap body. Furthermore, a water-stop gasket is detachably mounted on the lower flange of the mouth-forming component. The water-stop gasket is an annular sealing component that seals the mouth-forming component between a stepped portion (protrusion) that protrudes throughout the circumference of the inner side of the neck of the container body.

[0004] Patent Document 2 describes a stopper comprising: a stopper body threadedly connected to the opening of a container body in a detachable manner; a first cap mounted on the stopper body in an openable and closable manner via a hinge mechanism, which seals the drinking spout (opening) of the container body when closed; a first seal mounted on the first cap, which seals the opening of the container body with the first cap when the first cap is closed; a second cap mounted on the stopper body in an openable and closable manner via a hinge mechanism, which covers the first cap from the outside when closed; a second seal mounted on the second cap, which seals the hole provided in the first cap when the second cap is closed; and a locking part provided on the stopper body, which engages with the second cap or the first cap to keep the stopper in a closed state. The locking part is provided radially on the stopper at a position opposite to the hinge mechanism (i.e., at the front of the stopper).

[0005] Patent Document 1: Japanese Patent No. 6554356

[0006] Patent Document 2: Japanese Patent No. 6346785

[0007] The cap unit in Patent Document 1 can be disassembled for washing, but it has many parts, requiring cleaning of many components. In addition, the assembly and disassembly operations are time-consuming and labor-intensive, and there is a possibility that disassembled parts may be lost.

[0008] Furthermore, the narrow inlet of the mouth-forming component makes it difficult to see the inside of the container body when the cap unit is installed, making it hard for the user to know when the beverage is coming out of the inlet. Additionally, refilling the container requires removing the cap unit, which is time-consuming and laborious.

[0009] Regarding the stopper in Patent Document 2, the drinking spout is located near the left or right end of the opening of the container body. However, in commonly available beverage containers with caps, the drinking spout is often located at the same front as the locking part (cap locking mechanism), meaning the beverage is drunk from the front of the container. Therefore, from the user's perspective (usage), it is sometimes difficult to adapt to drinking from the left or right side of the opening of the container body as in Patent Document 2.

[0010] Additionally, since the container body is made of metal, the taste may be unpleasant when the user places their mouth against the opening (drinking spout). Furthermore, the heat of hot beverages is easily transferred to the drinking spout, making it sometimes difficult for the user to place their mouth against it. Summary of the Invention

[0011] One of the objectives of this invention is to provide a cap unit and a beverage container that can prevent the loss of components, make it easy to visually confirm when to replenish the beverage through the inlet and when the beverage comes out, provide a good taste when the user puts their mouth to the drinking mouth, and make it easy to put the mouth to the drinking mouth even for hot beverages, providing a good user experience and making it easy to drink beverages.

[0012] One aspect of the present invention is a cap unit that is detachably mounted to a container body with an upper opening, comprising: a cap body mounted to the upper opening of the container body and having a liquid inlet communicating with the interior and exterior of the container body; a cap covering the liquid inlet from above; a hinge connecting the cap to the cap body for free rotation; a water-stop gasket directly sealing the cap to the container body; and a cap locking mechanism fixing the cap to the cap body in a closed position, the cap locking mechanism having a locking portion that engages with the cap or the cap body, the hinge being disposed at the rear of the cap unit, the locking portion being disposed at the front of the cap unit, the cap body having a drinking spout disposed above the upper opening and having the liquid inlet formed therein, the drinking spout extending vertically in a manner connected to the upper opening, and the front portion of the drinking spout protruding upwards more than the locking portion.

[0013] In the cap unit described above, the cap body preferably has a plug portion, which passes through the inside of the drinking spout and is inserted into the upper opening portion. The water-stopping gasket seals the plug portion and the protrusion that is provided on the inside of the container body.

[0014] Preferably, the cap unit has an opening gasket that seals the cap body and the upper opening.

[0015] Preferably, the cap unit has a pressure relief mechanism that disconnects the interior and exterior of the container body in a communicable manner.

[0016] In addition, one embodiment of the beverage container of the present invention comprises: the cap unit described above; and the container body on which the cap unit is mounted.

[0017] In the above-mentioned beverage containers, it is preferable that the container body has a vacuum insulation structure.

[0018] According to one aspect of the present invention, the cap unit and beverage container can prevent the loss of parts, make it easy to visually confirm when to replenish or dispense beverages through the liquid inlet, provide a good taste when the user puts their mouth to the drinking spout, and make it easy to put the mouth to the drinking spout even for hot beverages, providing a good user experience and making it easy to drink beverages. Attached Figure Description

[0019] Figure 1 This is a perspective view showing a beverage container according to the first embodiment of the present invention.

[0020] Figure 2 This is a cross-sectional view of a beverage container.

[0021] Figure 3 It is a cross-sectional view showing a portion of a beverage container, indicating the closed state (closed position) of the lid.

[0022] Figure 4 It is a cross-sectional view showing a portion of a beverage container, representing the intermediate state of the lid during the transition between the closed and open states.

[0023] Figure 5 It is a cross-sectional view showing a portion of a beverage container, indicating the open state (open position) of the lid.

[0024] Figure 6 It is a three-dimensional diagram representing a beverage container.

[0025] Figure 7 It is a three-dimensional diagram of a beverage container, showing the internal state of the container body as seen through the liquid inlet.

[0026] Figure 8 It is a cross-sectional view showing a part of a beverage container, indicating that the interior and exterior of the container body are connected by a pressure relief mechanism (i.e., the pressure inside the container body has been released).

[0027] Figure 9 This is a cross-sectional view showing a portion of a beverage container, illustrating a variation of the opening liner.

[0028] Figure 10This is a perspective view showing a beverage container according to the second embodiment of the present invention.

[0029] Figure 11 It is a cross-sectional view showing a portion of a beverage container, indicating the closed state (closed position) of the lid.

[0030] Figure 12 It is a cross-sectional view showing a part of a beverage container, indicating that the inside and outside of the container body are connected by a pressure relief mechanism (i.e., the pressure inside the container body has been released).

[0031] Figure 13 This is a cross-sectional view showing a portion of a beverage container, indicating the state where the lid locking mechanism has released the lid from its fixed (locked) state.

[0032] Figure 14 It is a cross-sectional view showing a portion of a beverage container, indicating the open state (open position) of the lid.

[0033] Figure 15 It is a three-dimensional view showing a part of a beverage container, showing the internal state of the container body as seen through the liquid inlet.

[0034] Explanation of reference numerals in the attached figures

[0035] 1, 101… Beverage container; 2… Container body; 2d… Upper opening; 3, 103… Cap unit; 8… Protrusion; 10… Cap body; 11… Drinking spout; 12… Liquid inlet; 20… Cap body; 21, 121… Plug; 30… First hinge; 40, 140… Cap locking mechanism; 47, 147… Hook (locking part); 60, 61, 110… Opening gasket; 70… Waterproof gasket; 80, 130… Pressure release mechanism. Detailed Implementation

[0036] <First Embodiment>

[0037] Reference Figures 1 to 8 The cap unit 3 of the first embodiment of the present invention and the beverage container 1 having the cap unit 3 will be described. Furthermore, in the following description, the cap unit 3 will sometimes be referred to simply as a cap, and the beverage container 1 will sometimes be referred to simply as a container.

[0038] like Figure 1 and Figure 2 As shown, the beverage container 1 of this embodiment includes: a cap unit 3; and a bottomed cylindrical container body 2 on which the cap unit 3 is mounted. The cap unit 3 is screwed onto the opening (neck 2c described later) of the container body 2 in a removable manner, forming a plug that can be opened and closed freely.

[0039] The cap unit 3 includes: a cylindrical cap body 10 with a top wall (upper wall); an opening gasket 60; a top cylindrical cap 20; a pressure release mechanism 80; a first hinge 30 that connects the cap 20 to the cap body 10 so that it can rotate freely; a water-stop gasket 70 that directly seals the cap 20 to the container body 2; and a cap locking mechanism 40.

[0040] The cap unit 3 and the container body 2 are arranged coaxially with the central axis C as the center.

[0041] In this embodiment, the direction in which the central axis C extends is called the vertical direction. The direction from the bottom part 2a of the container body 2 toward the top wall part 20a of the cover 20 is called the upper side, and the direction from the top wall part 20a toward the bottom part 2a is called the lower side.

[0042] The direction orthogonal to the central axis C is called the radial direction. The direction of the radial direction closest to the central axis C is called the radial inner side or simply the inner side, and the direction farther away from the central axis C is called the radial outer side or simply the outer side.

[0043] The direction around the central axis C is called the circumferential direction.

[0044] Furthermore, the radial direction passing through the first hinge 30 and the central axis C is called the front-back direction. The direction from the first hinge 30 toward the central axis C in the front-back direction is called the front side, and the direction from the central axis C toward the first hinge 30 is called the rear side.

[0045] Additionally, the direction perpendicular to the radial direction and the front-back direction is called the left-right direction. Viewed from the front... Figure 2 When the beverage container 1 is in an upright position with the top wall 20a of the lid 20 facing upward in the vertical direction, the direction facing left in the left-right direction is called the left side, and the direction facing right is called the right side.

[0046] Furthermore, the central axis C can also be distinguished from the hinge central axis A described later and referred to as the cap central axis C or the container central axis C. Additionally, for ease of explanation, definitions of radial, circumferential, and other directions based on the central axis of the constituent components other than the central axis C are sometimes used.

[0047] like Figure 2 As shown, the beverage container 1, through the container body 2 with a vacuum insulation structure, can keep the beverage (liquid contents, liquid) contained in the container body 2 warm or cold. The container body 2 is a bottomed cylindrical shape with an open top. In addition, contents other than beverages can also be contained in the container body 2.

[0048] The container body 2 is made of metal such as stainless steel. Specifically, the container body 2 has a bottomed cylindrical outer container 4 and an inner container 5, and is a double-layered container formed by joining the opening edges of the inner container 5 inside the outer container 4.

[0049] like Figure 3 As shown, the upper cylindrical portion of the inner container 5 is fitted inside the upper cylindrical portion of the outer container 4, and the upper cylindrical portions are welded to each other in this fitted state. As a result, the upper opening 2d of the container body 2 becomes a sharp shape known as the "rolled edge welding structure".

[0050] 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 sealing the exhaust hole located at the center of the bottom surface of the outer container 4 within a chamber that has been depressurized to a high vacuum (evacuated).

[0051] like Figure 1 and Figure 2 As shown, the container body 2 has: a generally circular plate-shaped bottom portion 2a; a main body 2b, which is generally cylindrical and whose lower end is connected to the outer periphery of the bottom portion 2a; a generally cylindrical neck portion 2c, which is disposed on the upper side of the main body 2b and is narrower than the main body 2b; and a shoulder portion 2e, which is generally conical and narrower as it faces upward, connecting the upper end of the main body 2b to the lower end of the neck portion 2c.

[0052] like Figure 3 As shown, the inner circumference of the neck 2c is narrower than the inner circumference of the main body 2b. The neck 2c has a protrusion 8. The protrusion 8 is disposed on the inner circumference of the neck 2c. The protrusion 8 protrudes radially inward from the inner circumference of the neck 2c and extends circumferentially throughout the entire circumference. The protrusion 8 is annular about the central axis C and protrudes most inward at the neck 2c. That is, the protrusion 8 is provided protrudingly inside the container body 2.

[0053] Furthermore, an external threaded portion 7 is provided on the outer periphery of the neck 2c. Additionally, the upper opening 2d of the container body 2 has a circular shape. The diameter of the upper opening 2d of the container body 2 is, for example, 50 mm or less.

[0054] In addition, such as Figure 1 As shown, the beverage container 1 of this embodiment has a generally cylindrical shape, but the shape of the beverage container 1 is not particularly limited and can be appropriately modified according to size, design, etc. In addition, coating, printing, etc. can be applied to each outer surface of the container body 2, the cap body 10, and the cap 20.

[0055] like Figure 3As shown, the cap body 10 is installed on the upper opening 2d of the container body 2 and has a liquid inlet 12 that communicates the interior and exterior of the container body 2. The cap body 10 is made of a heat-resistant resin such as polypropylene (PP).

[0056] The cap body 10 has a top wall portion 10a, a peripheral wall portion 10b, and a drinking spout portion 11. In this embodiment, the top wall portion 10a, the peripheral wall portion 10b, and the drinking spout portion 11 of the cap body 10 are integrally formed from a single component.

[0057] The top wall portion 10a covers the upper opening 2d of the container body 2 from above. The top wall portion 10a is generally annular in shape. The top wall portion 10a has a liner receiving groove 10c. The liner receiving groove 10c is recessed upward from the lower surface of the top wall portion 10a and extends circumferentially. The liner receiving groove 10c is an annular groove centered on the central axis C and opens downward.

[0058] The peripheral wall portion 10b is a cylindrical shape extending downward from the outer periphery of the top wall portion 10a. The peripheral wall portion 10b circumferentially surrounds the neck portion 2c from the radially outer side. The lower end of the peripheral wall portion 10b is positioned opposite or in contact with the shoulder portion 2e from above with a gap. The peripheral wall portion 10b is a generally cylindrical shape extending vertically in a continuous manner with the main body 2b of the container body 2.

[0059] The peripheral wall portion 10b has an internal thread portion 15 on its inner peripheral surface. The internal thread portion 15 engages with the external thread portion 7 of the neck portion 2c. That is, the cap body 10 is installed on the outside of the neck portion 2c in a removable manner by screwing on, while covering the upper opening 2d of the container body 2.

[0060] The drinking spout 11 is a curved, wall-like or generally cylindrical shape centered on the central axis C. In this embodiment, viewed from above as a top view of the cap body 10, the drinking spout 11 is approximately C-shaped with an opening at the rear (see reference). Figure 7 The drinking spout 11 is provided upright from the inner periphery of the top wall 10a.

[0061] like Figure 3 As shown, the inner diameter of the drinking spout 11 is approximately constant along the vertical direction. Regarding the outer diameter of the drinking spout 11, except for the lower end, it is approximately constant along the vertical direction, but increases towards the lower end. That is, the wall thickness of the drinking spout 11 increases towards the lower side. In other words, the wall thickness of the drinking spout 11 decreases towards the upper side. Therefore, while ensuring the rigidity of the drinking spout 11, it also facilitates drinking.

[0062] A drinking spout 11 is disposed above the upper opening 2d, forming a liquid inlet 12 inside. The drinking spout 11 is located directly above the upper opening 2d, that is, it overlaps with the upper opening 2d when viewed from above. Specifically, when viewed from above, at least the lower end of the drinking spout 11 overlaps with the upper opening 2d. The drinking spout 11 extends in the vertical direction in a manner connected to the upper opening 2d.

[0063] like Figure 5 As shown, the vertical dimension (height dimension) of the drinking spout 11 decreases from the front end towards the rear. Specifically, the height dimension of the drinking spout 11 protruding upward from the top wall portion 10a decreases from the front end towards the rear. That is, the upper edge of the drinking spout 11 slopes downward from the front end towards the rear. Specifically, in this embodiment, the front portion of the upper edge of the drinking spout 11 is convex, while the left and right portions are concave, smoothly connected to the front portion.

[0064] like Figure 3 As shown, the opening gasket 60 is annular about the central axis C. In this embodiment, the opening gasket 60 is annular plate-shaped. Specifically, the shape of the cross-section (longitudinal section) of the opening gasket 60 along the central axis C is a rectangle whose radial dimension is longer than its vertical dimension. The opening gasket 60 is made of elastically deformable components such as silicone rubber or elastomers.

[0065] An opening gasket 60 is disposed in a gasket receiving groove 10c. The lower surface of the opening gasket 60 contacts the upper opening 2d of the container body 2. The opening gasket 60 seals the upper opening 2d of the container body 2 with the top wall 10a of the cap body 10.

[0066] In this embodiment, the opening gasket 60 is fixed to the cap body 10. Specifically, the opening gasket 60 can be integrally formed with the cap body 10 by two-color molding, or it can be bonded to the cap body 10 by adhesive or the like after being formed separately from the cap body 10.

[0067] The cap 20 covers the drinking spout 11 and the liquid inlet 12 of the cap body 10 from above. The cap 20 is a component that covers the drinking spout 11 and the liquid inlet 12 in a manner that allows it to be opened and closed freely. The cap 20 may have a portion made of a heat-resistant resin such as polypropylene (PP) (e.g., the portion other than the valve gasket 82 described later).

[0068] like Figure 1 and Figure 3As shown, the cover 20 has: a cover peripheral wall portion 20b, which is formed in a generally cylindrical shape in a manner continuous with the peripheral wall portion 10b of the cap body 10; a cover top wall portion 20a, which is connected to the upper end of the cover peripheral wall portion 20b; a bolt portion 21, which protrudes downward from the cover top wall portion 20a; an inner cover 81, which is installed on the bolt portion 21; and a valve gasket 82, which is installed on the inner cover 81.

[0069] like Figure 3 As shown, the plug 21 passes through the inside of the drinking mouth 11 and is inserted into the upper opening 2d. That is, the plug 21 extends in the vertical direction and is disposed throughout the drinking mouth 11 (liquid inlet 12) and the upper opening 2d.

[0070] The bolt portion 21 has: a bottomed cylindrical bolt tube 22, which is configured to hang down from the top wall portion 20a of the cover; an internal thread 23, which is provided on the inner circumferential surface of the peripheral wall of the bolt tube 22; and a vent hole 25, which penetrates the bottom wall 26 of the bolt tube 22 in the vertical direction.

[0071] The stopper 22 is a bottomed cylindrical shape centered on the central axis C, extending in the vertical direction. The stopper 22 is disposed throughout the interior of the drinking spout 11 and the interior of the neck 2c.

[0072] The bottom wall 26 of the plug cylinder 22 has a large-diameter wall portion 26a, a small-diameter wall portion 26b, a connecting wall portion 26c, and a gasket mounting flange 24.

[0073] The large-diameter wall portion 26a is an annular plate centered on the central axis C. The outer periphery of the large-diameter wall portion 26a is connected to the lower end of the peripheral wall of the plug cylinder 22.

[0074] The smaller diameter wall portion 26b is a ring-shaped plate centered on the central axis C, with a diameter smaller than that of the larger diameter wall portion 26a, and is located on the lower side of the larger diameter wall portion 26a.

[0075] The connecting wall portion 26c is cylindrical about the central axis C, connecting the large-diameter wall portion 26a and the small-diameter wall portion 26b. The upper end of the connecting wall portion 26c is connected to the inner periphery of the large-diameter wall portion 26a. The lower end of the connecting wall portion 26c is connected to the outer periphery of the small-diameter wall portion 26b.

[0076] The gasket mounting flange 24 protrudes radially outward from the connection portion between the small-diameter wall portion 26b and the connecting wall portion 26c, extending circumferentially. The gasket mounting flange 24 is an annular plate centered on the central axis C. The gasket mounting flange 24 is disposed radially inside the protrusion 8 and is radially opposed to the protrusion 8.

[0077] A vent 25 extends vertically through the small-diameter wall portion 26b. The vent 25 is a circular hole centered on the central axis C. The vent 25 connects the interior of the container body 2 with the exterior. Specifically, the vent 25 connects the interior of the container body 2 with the interior of the plug portion 21.

[0078] The inner cover 81 is installed inside the bolt 21 in a removable manner. The inner cover 81 is housed inside the bolt cylinder 22.

[0079] The inner cover 81 has an inner cover body 83, an external thread 84, a gasket mounting cylinder 85, and an operating part 86.

[0080] like Figure 8 As shown, the inner cover body 83 is a bottomed cylindrical shape centered on the central axis C. The inner cover body 83 is disposed inside the plug cylinder 22.

[0081] like Figure 3 As shown, an external thread 84 is provided on the outer peripheral surface of the inner cover body 83. The external thread 84 engages with the internal thread 23. By engaging the external thread 84 with the internal thread 23, the inner cover 81 is detachably threadedly fixed relative to the bolt portion 21.

[0082] Furthermore, in this embodiment, the combination of the mutually engaging external thread 84 and internal thread 23 is sometimes simply referred to as "thread". The thread is tightened by twisting the inner cover 81 relative to the plug cylinder 22 to one circumferential side, and loosened by twisting it to the other circumferential side. In this embodiment, the tightening side of the thread, viewed from above as a top view of the cap unit 3, is clockwise, while the loosening side, viewed from above as a top view of the cap, is counterclockwise.

[0083] The gasket mounting cylinder 85 is cylindrical about a central axis C and extends vertically. The gasket mounting cylinder 85 is configured to protrude downwards from the lower surface of the bottom wall of the inner cover body 83. In this embodiment, the outer diameter of the gasket mounting cylinder 85 is smaller than the outer diameter of the inner cover body 83.

[0084] The operating part 86 is the part that the user can hold and operate when the inner cover 81 is rotated around the central axis C to tighten or loosen the threads.

[0085] like Figure 6 and Figure 8 As shown, the operating part 86 is a plate extending radially. More specifically, the operating part 86 is a quadrilateral plate extending radially and vertically, with its two radial ends connected to the inner circumferential surface of the peripheral wall of the inner cover body 83. Furthermore, the lower end of the operating part 86 is connected to the upper surface of the bottom wall of the inner cover body 83. The user can pinch the operating part 86 with their fingers to rotate the inner cover 81 circumferentially to one side or the other.

[0086] like Figure 3 and Figure 8 As shown, the valve gasket 82 is a generally bottomed cylindrical shape centered on the central axis C. The valve gasket 82 is made of elastically deformable components such as silicone rubber or an elastomer. The valve gasket 82 is installed in a removable manner at the lower end of the inner cover 81. The valve gasket 82 is housed within the plug sleeve 22. The valve gasket 82 closes the vent 25 in a freely opening and closing manner.

[0087] like Figure 8 As shown, the valve gasket 82 has a fitting cylindrical portion 82a, a dome-shaped portion 82b, and a flange portion 82c.

[0088] The fitting cylindrical portion 82a is cylindrical in shape centered on the central axis C and extends in the vertical direction. The fitting cylindrical portion 82a is fitted into the gasket mounting cylinder 85.

[0089] The dome 82b is dome-shaped, bulging downwards. The outer periphery of the dome 82b connects to the lower end of the fitting cylindrical portion 82a. (As shown...) Figure 3 As shown, with the external thread 84 and internal thread 23 engaged in a tightened state, the dome 82b closes the vent hole 25 from the top. Figure 8 As shown, in the relaxed state of the thread, the dome 82b is configured to separate upward from the vent 25, opening the vent 25.

[0090] The flange portion 82c protrudes radially outward from the outer peripheral surface of the fitting cylinder portion 82a and extends circumferentially. The flange portion 82c is annular plate centered on the central axis C. The outer peripheral portion of the flange portion 82c protrudes radially outward more than the gasket mounting cylinder 85. The upper surface of the flange portion 82c contacts the lower end face of the gasket mounting cylinder 85.

[0091] By providing a flange portion 82c on the valve gasket 82, when the valve gasket 82 is installed on the gasket mounting cylinder 85, the fitting cylinder portion 82a can be easily pressed into the gasket mounting cylinder 85, and the valve gasket 82 can be accurately positioned in the vertical direction. In addition, when removing the valve gasket 82 from the gasket mounting cylinder 85, the flange portion 82c can be used as a holding part, making it easy to remove the valve gasket 82.

[0092] like Figure 3 and Figure 8 As shown, the pressure relief mechanism 80 disconnects the interior and exterior of the container body 2 in a manner that allows communication. Specifically, the pressure relief mechanism 80 can disconnect the vent 25, and when the internal pressure of the container body 2 changes (decreases or increases), it can reconnect the vent 25 to release the pressure in the container body 2. The pressure relief mechanism 80 includes the aforementioned plug 21, vent 25, valve gasket 82, inner cover 81, and threads (external thread 84 and internal thread 23). That is, in this embodiment, the pressure relief mechanism 80 is provided on the cover 20.

[0093] Furthermore, in this embodiment, a heat-insulating structure based on an air layer or a heat-insulating material (not shown) is provided throughout the interior of the gasket mounting cylinder 85 and the valve gasket 82. That is, the cover 20 (pressure relief mechanism 80) has a heat-insulating structure based on an air layer or a heat-insulating material.

[0094] Furthermore, although not specifically illustrated, in this embodiment, the cover 20 has a thread locking mechanism that maintains the engagement of the external thread 84 and the internal thread 23 (the threaded tight state). The thread locking mechanism includes: a thread-locking portion disposed on the inner circumferential surface of the plug cylinder 22; and a thread-locked portion disposed on the outer circumferential surface of the inner cover body 83, allowing the thread-locking portion to be engaged in a detachable manner. The thread locking mechanism locks the thread in the engaged state of the external thread 84 and the internal thread 23, preventing accidental loosening of the thread. The thread locking mechanism can be released, for example, by using a user to press the inner cover 81 downwards, causing it to rotate circumferentially to the other side (the loosened side of the thread).

[0095] like Figure 3 As shown, the first hinge 30 is located at the rear of the cap unit 3. The first hinge 30 connects the upper rear end of the cap body 10 to the rear end of the cap body 20, allowing for free rotation about the hinge central axis A. The hinge central axis A of the first hinge 30 extends in the left-right direction. The central axis C and the hinge central axis A are in a position of mutual torsion.

[0096] The cover 20 is connected to the cap body 10 via the first hinge 30, thereby enabling... Figure 3 and Figure 6 The closed state (closed position) shown is the same as Figure 5 and Figure 7 It can rotate freely about the hinge center axis A between the open state (open position) shown. Figure 3 and Figure 6 The closed position of the cover 20 shown is the position where the cover 20 closes the opening (neck 2c) of the container body 2 and the liquid inlet 12. Figure 5 and Figure 7 The open position of the cover 20 shown is the position where the cover 20 opens the opening of the container body 2 and the liquid inlet 12. Furthermore, Figure 4 This indicates the intermediate state of the cover 20 during its transition between the closed and open states.

[0097] Although not specifically illustrated, the first hinge 30 has a torsion coil spring (force-applying part) extending spirally around the hinge central axis A. The torsion coil spring applies a force to the cover body 20 relative to the cap body 10 in the opening direction around the hinge central axis A. That is, it imparts a force to the cover body 20 in the opening direction. Therefore, when the locking state by means of the cap locking mechanism 40 is released, the cover body 20 rotates from the closed position to the open position.

[0098] like Figure 3 As shown, the water-stop gasket 70 is installed at the lower end of the plug portion 21 in a removable manner. The water-stop gasket 70 is, for example, a ring-shaped sealing component made of silicone rubber, elastomer, etc., and is capable of elastic deformation. The water-stop gasket 70 is embedded in the bottom wall 26 of the plug cylinder 22.

[0099] The water-stopping gasket 70 has a gasket body 71, an inner flange 72, and an outer flange 73.

[0100] The gasket body 71 is a bottomed cylindrical shape centered on the central axis C. The upper surface of the bottom wall of the gasket body 71 is in contact with or separated from the lower surface of the small-diameter wall portion 26b and the lower surface of the gasket mounting flange 24. The peripheral wall of the gasket body 71 surrounds the gasket mounting flange 24 circumferentially from the radially outer side.

[0101] The pad body 71 has a circular connecting hole 71a centered on the central axis C. The connecting hole 71a is disposed in the center of the bottom wall of the pad body 71. Viewed from above, the connecting hole 71a is arranged overlapping with the vent hole 25. In this embodiment, the inner diameter of the connecting hole 71a is approximately the same as the inner diameter of the vent hole 25.

[0102] The inner flange 72 protrudes radially inward from the upper end of the peripheral wall of the pad body 71 and extends circumferentially. The inner flange 72 is annular plate centered on the central axis C. The inner flange 72 is embedded between the lower surface of the large-diameter wall portion 26a and the upper surface of the pad mounting flange 24. In addition, the pad mounting flange 24 is sandwiched between the bottom wall of the pad body 71 and the inner flange 72 in the vertical direction.

[0103] The outer flange 73 protrudes radially outward from the upper end of the peripheral wall of the gasket body 71 and extends circumferentially. The outer flange 73 is annular with the central axis C as the center. The outer flange 73 is in liquid-tight contact with the protrusion 8. Thus, the water-stop gasket 70 seals the space between the plug portion 21 and the protrusion 8.

[0104] Furthermore, the "water-stopping gasket 70 that directly seals the cap 20 and the container body 2" mentioned in this embodiment refers to a structure that seals the space between the cap 20 (plug 21) and the container body 2 (protrusion 8) through direct contact between the water-stopping gasket 70 and the cap 20. More specifically, the water-stopping gasket 70 does not contact the cap body 10 or its drinking spout 11, but directly contacts the protrusion 8 of the container body 2 by passing through the interior of the drinking spout 11.

[0105] like Figure 3 and Figure 4As shown, when viewed in a longitudinal section along the central axis C, the outer flange 73 has: a straight portion (flange base) 73a, which extends radially outward from the peripheral wall of the pad body 71; and a curved portion 73b, which connects to the outer periphery of the straight portion 73a and is curved in a way that convexes radially outward.

[0106] The upper surface of the straight portion 73a contacts the lower surface of the large-diameter wall portion 26a. The outer periphery of the curved portion 73b contacts the protrusion 8.

[0107] The upper portion of the curved portion 73b extends downward in a curved manner from the connection portion with the straight portion 73a toward the radially outward side. The lower portion of the curved portion 73b extends radially inward in a curved manner from the connection portion with the upper portion toward the downward side. The wall thickness of the curved portion 73b decreases from the connection portion with the straight portion 73a toward the front end (the inner circumferential end of the lower portion). Therefore, although the curved portion 73b ensures its rigidity, it is easily deformable and contacts the protrusion 8 in a close-fitting state.

[0108] like Figure 3 As shown, the cap locking mechanism 40 is disposed at the front of the cap unit 3. When the cap 20 is in the closed position (closed position) of the liquid inlet 12, the cap locking mechanism 40 overcomes the force of the torsion spring (force application part) of the first hinge 30 and fixes the cap 20 relative to the cap body 10.

[0109] Specifically, the cap locking mechanism 40 includes: a locking member 45, which is rotatably mounted to the cap body 10 via a second hinge 44; and a ring stop 46, which is rotatably mounted to the cap body 10 via the second hinge 44. Furthermore, the hinge center axis (not shown) of the second hinge 44 is disposed on the outer side of the peripheral wall portion 10b of the cap body 10 and extends in the left-right direction.

[0110] The locking member 45 is supported by a second hinge 44 located at the front end of the peripheral wall portion 10b of the cap body 10, allowing it to rotate freely. The locking member 45 has: a first extension portion 45a extending upward from the second hinge 44; and a second extension portion 45b extending downward from the second hinge 44.

[0111] A hook (locking part) 47 is provided protruding rearward from the front end of the first extension 45a (the upper end of the locking member 45). That is, the cap locking mechanism 40 has a hook 47, which is disposed at the front of the cap unit 3. The hook 47 engages with the cap body 20 or the cap body 10, and in this embodiment, it engages with the cap body 20.

[0112] Between the second extension 45b and the peripheral wall 10b, an elastic member 48, such as a compression coil spring, is disposed, for example, in a compressed state in the front-rear direction. The elastic member 48 applies force to the second extension 45b toward the front.

[0113] like Figure 1 As shown, the ring stop 46 is a component that extends in a generally arc shape, with both ends supported by the second hinge 44 for free rotation. Thus, the ring stop 46 can rotate up and down about the second hinge 44.

[0114] In addition, such as Figure 3 As shown, the cover locking mechanism 40 has: a locking receiving part (locked part) 49 for the hook part 47 of the locking member 45 to be locked; and a stop receiving part 50 for hooking the fixing ring stop member 46.

[0115] The locking receiving part 49 is a claw-shaped part that protrudes forward from the lower front end of the cover peripheral wall 20b of the cover body 20. The upper surface of the locking receiving part 49 contacts the lower surface of the hook part 47, thereby locking the locking receiving part 49 into the hook part 47. That is, the hook part 47 engages with the locking receiving part 49 disposed on the cover body 20.

[0116] The stop receiving portion 50 has a shape that fits into the inner periphery of the ring stop 46, and is composed of a curved wall portion that protrudes forward from the front end of the cover peripheral wall portion 20b at a position surrounding the locking receiving portion 49.

[0117] In the cap locking mechanism 40, when the cap 20 closes the upper part of the cap body 10, the hook 47 of the locking member 45 engages with the locking receiving part 49, thereby maintaining the state in which the cap 20 closes the upper part of the cap body 10. From this state, the user overcomes the force of the elastic member 48 to press the second extension 45b of the locking member 45 backward, thereby... Figure 4 As shown, the locking member 45 rotates about the second hinge 44, and the first extension 45a moves forward, releasing the hook 47 from its locking state relative to the locking receiving part 49. Thus, as... Figure 4 and Figure 5 As shown, the cover 20 can be rotated in the opening direction by the force of the torsion coil spring in the first hinge 30.

[0118] In addition, such as Figure 3 As shown, in the cover locking mechanism 40, when the cover 20 closes the upper part of the cap body 10, the ring stop 46 is hooked and fixed to the stop receiving part 50, thereby preventing the cover 20 from rotating in the opening direction. Thus, in the cover locking mechanism 40, it is possible to prevent the cover 20 from opening due to unnecessary (accidental) operation of the locking member 45.

[0119] Furthermore, in this embodiment, the front part of the drinking spout 11 protrudes upwards further than the cap locking mechanism 40. Specifically, in Figure 5 In the open state of the lid 20 shown, the front portion of the drinking spout 11 protrudes upwards beyond at least the locking member 45 in the lid locking mechanism 40. That is, the front portion of the drinking spout 11 protrudes upwards beyond the hook portion 47. More specifically, it is preferable that the front portion of the drinking spout 11 protrudes upwards beyond the upper end of the hook portion 47 by an amount between 7 mm and 30 mm. This is because when drinking a beverage contained in the container body 2, if the protrusion is less than 7 mm, the lower lip and chin will come into contact with the locking member 45; furthermore, if it exceeds 30 mm, the height of the beverage container 1 increases. Additionally, in this embodiment, in... Figure 3 In the closed state of the cover 20 shown, the front part of the drinking spout 11 protrudes upward more than the ring stop 46 that is hooked and fixed to the stop receiving part 50 on the upper side of the hook part 47.

[0120] Furthermore, in this embodiment, the operation of the cover locking mechanism 40 (locking operation or lock release operation) and the operation of the pressure release mechanism 80 (operation of rotating the inner cover 81 in the circumferential direction) are independent of each other, and each operation can be performed separately as needed.

[0121] According to the cap unit 3 and beverage container 1 of this embodiment described above, the cap body 10 has a drinking spout 11 connected to the upper side of the upper opening 2d of the container body 2. The drinking spout 11 forms a flow path for the beverage that is continuous with the upper opening 2d, and has approximately the same diameter as the upper opening 2d, thus ensuring that the inner diameter (opening size) of the liquid inlet 12 formed inside the drinking spout 11 is also large. Therefore, even when the cap unit 3 is installed, the interior of the container body 2 can be easily observed when the cap 20 is in the open state.

[0122] Therefore, the remaining amount of beverage in the container body 2 can be visually confirmed through the liquid inlet 12. When the user drinks, it is easy to know the appropriate angle to tilt the container so that the beverage will flow out of the liquid inlet 12, making it easier to match the timing of drinking. In addition, the drinking spout 11 extends vertically in a manner connected to the upper opening 2d. The portion of the neck 2c above the protrusion 8 and the interior of the drinking spout 11 do not have large steps or protrusions that would obstruct the flow of beverage, making it easier for the user to drink.

[0123] In addition, when replenishing beverages to the container body 2, beverages can be injected from the large-diameter inlet 12 without disassembling the cap unit 3, making it easy to operate.

[0124] Furthermore, this embodiment eliminates the need for components such as mouth-forming parts and mouth-removal mechanisms found in existing cap units, thus reducing the number of components. Specifically, the liquid inlet 12 of the drinking spout 11 has a large diameter, so when the cap 20 is closed, a portion of the cap 20 (the plug 21) passes through the interior of the liquid inlet 12, thereby closing the opening (neck 2c) of the container body 2. Therefore, the mouth-forming parts and mouth-removal mechanisms conventionally provided on the cap body 10 can be reduced, requiring fewer components to be cleaned when disassembling the washing cap unit 3. Additionally, assembly and disassembly operations are less time-consuming and labor-intensive, and the loss of disassembled components is prevented.

[0125] Furthermore, in this embodiment, the opening size of the liquid inlet 12 is sufficiently wide, so that the cap unit 3 can be installed in the neck 2c of the container body 2 while the cap 20 is opened to wash the inside of the container body 2.

[0126] Furthermore, the front part of the drinking spout 11 protrudes upwards more than the hook (locking part) 47 of the cap locking mechanism 40. Specifically, when the cap 20 is in the open state, it protrudes upwards at least more than the locking member 45. Therefore, when the user touches the drinking spout 11 with their mouth (lips) from the front to drink, it can prevent the lower lip, chin, etc. from contacting the locking member 45 (cap locking mechanism 40) and its hook 47. The user can drink smoothly from the front of the cap unit 3, and it is difficult to cause discomfort during use, resulting in a good user experience.

[0127] Furthermore, the drinking spout 11 is located on the cap body 10, which is separate from the container body 2, making it easy to make the drinking spout 11 from materials such as resin, excluding metal. Therefore, when the user places their mouth on the drinking spout 11, the taste is pleasant. In addition, it makes it difficult for the heat of hot beverages to be transferred to the drinking spout 11, making it easy for the user to place their mouth on the drinking spout 11, and even hot beverages are easy to drink.

[0128] Based on the above, according to this embodiment, the number of parts can be reduced, the workability of assembly and disassembly can be improved and the loss of parts can be suppressed, the timing of replenishing beverages through the liquid inlet 12 and the timing of beverage dispensing can be easily visually confirmed, the taste is good when the user puts their mouth to the drinking mouth 11, and even hot beverages are easy to put their mouth to the drinking mouth 11, resulting in a good user experience and easy drinking of beverages.

[0129] In addition, in this embodiment, the water-stopping gasket 70 seals the plug 21 of the cover 20 with the protrusion 8 of the container body 2.

[0130] In this case, when the cover 20 is in the closed state, the cover 20 and the container body 2 can be stably sealed by the water-stop gasket 70.

[0131] In addition, in this embodiment, the cap body 10 and the upper opening 2d are sealed by the opening pad 60, so that when the user drinks beverages, even if the container is tilted, the beverage is prevented from leaking out between the cap body 10 and the container body 2.

[0132] In this embodiment, the protrusion 8 and the upper opening 2d can be sealed by the water-stopping gasket 70 and the opening gasket 60, which can more reliably suppress the leakage of beverage.

[0133] In addition, this embodiment includes a pressure relief mechanism 80 that disconnects the interior and exterior of the container body 2 in a manner that allows communication.

[0134] For example, after a hot beverage is placed into the container body 2, time passes and the beverage cools down, causing a depressurization state inside the container body 2. The lid 20 is pulled inwards, causing the waterproof gasket 70 to adhere strongly to the protrusion 8, sometimes making it difficult to open the lid 20. Even in such cases, in this embodiment, the depressurization state of the container body 2 can be relieved by the pressure relief mechanism 80. That is, the inner cover 81 of the pressure relief mechanism 80 can be lifted by rotating it towards the looser side of the thread, thereby releasing the cut-off state of the vent hole 25 via the valve gasket 82, allowing air to be drawn in from the vent hole 25, thus eliminating the pressure difference between the inside and outside of the container body 2, making the lid 20 easy to open.

[0135] Furthermore, in this embodiment, the vertical dimension (height dimension) of the drinking opening 11 decreases as it moves from the front end of the drinking opening 11 toward the rear. That is, the upper edge of the drinking opening 11 slopes downward as it moves from the front end toward the rear.

[0136] In this case, the shape of the drinking spout 11 is easy to adapt to the lips and is unlikely to come into contact with the nose, making it easier for the user to drink the beverage from the front of the drinking spout 11. In addition, even if the stopper 21 is set to hang down from the top wall 20a of the cap 20, the stopper 21 is unlikely to interfere with the rear of the drinking spout 11 when the cap 20 is rotated around the first hinge 30.

[0137] In addition, in this embodiment, the front part of the upper edge of the drinking mouth 11 is convex, and the left and right parts are concave, which are smoothly connected to the front part.

[0138] Therefore, when the user places their lips on the drinking mouth 11 from the front, the lips easily adapt to the shape of the upper edge of the drinking mouth 11, making it easier to drink the beverage.

[0139] Furthermore, in this embodiment, as described above, the water-stopping gasket 70 is a structure that seals the plug 21 of the cap 20 with the protrusion 8 of the container body 2. The water-stopping gasket 70 does not contact the drinking spout 11, thus further increasing the freedom of shape design for the drinking spout 11. Therefore, as in this embodiment, it is possible to ensure a larger inner diameter of the drinking spout 11, eliminate the step difference on the inner circumferential surface in the vertical direction, improve visibility inside the container, enhance the flowability of the beverage, and give the upper edge of the drinking spout 11 a rounded shape, further improving the taste.

[0140] In addition, in this embodiment, the opening gasket 60 is fixed to the cap body 10.

[0141] In this case, the cap body 10 and the opening gasket 60 are integrated, so the opening gasket 60 can be washed together with the cap body 10, making it easy to operate. In addition, it can prevent the loss of the opening gasket 60.

[0142] In addition, in this embodiment, a pressure relief mechanism 80 is provided on the cover 20.

[0143] In this situation, the user can easily operate the pressure relief mechanism 80.

[0144] In addition, in this embodiment, the operation of the pressure relief mechanism 80 and the operation of the cover locking mechanism 40 can be performed separately.

[0145] In this case, the pressure in the container body 2 can be released only when pressure needs to be released during operation. In addition, the construction of the pressure release mechanism 80 and the cap locking mechanism 40 can be simplified respectively.

[0146] In addition, in this embodiment, the cover 20 (pressure relief mechanism 80) has a heat-insulating structure based on an air layer or heat-insulating material.

[0147] In this case, it is possible to suppress the decrease in temperature of hot beverages and the increase in temperature of cold beverages caused by the lid 20 or the pressure release mechanism 80, and maintain the temperature of the beverages at a suitable temperature.

[0148] In addition, in this embodiment, the plug portion 21 is disposed inside the drinking spout portion 11.

[0149] In this embodiment, the drinking spout 11 protrudes upward from the top wall 10a, thus easily ensuring that the vertical dimension of the plug portion 21 disposed inside the drinking spout 11 is large. Therefore, it is easy to ensure that there is space in the plug portion 21 for providing the pressure relief mechanism 80 and the heat insulation structure.

[0150] In addition, in this embodiment, the diameter of the upper opening 2d of the container body 2 is 50 mm or less.

[0151] In this case, when a hot beverage is placed into the container body 2, causing positive pressure inside, even if the lid 20 is in the open state, the release sound ("pop") that accompanies the release of internal pressure in the container can be suppressed to a smaller extent.

[0152] Furthermore, the present invention is not limited to the first embodiment described above, and structural modifications can be made as described below without departing from the spirit of the present invention.

[0153] In the first embodiment described above, an example is given in which the opening liner 60 is integrally fixed to the cap body 10, but it is not limited to this.

[0154] Figure 9 This is a partial cross-sectional view showing a modified example of the cap unit 3 and beverage container 1 described in the first embodiment. In this modified example, the opening gasket 61 is separately provided from the cap body 10 and is installed on the cap body 10 in a detachable manner. The opening gasket 61 is annular about a central axis C and is made of a deformable component such as silicone rubber or an elastomer. The opening gasket 61 is disposed in the gasket receiving groove 10c. Furthermore, in Figure 9 In the middle, the opening gasket 61 is shown with a double-dotted line (imaginary line) to represent the shape before elastic deformation.

[0155] The opening gasket 61 has a sealing flange 61a and a flange connecting cylinder 61b. A pair of sealing flanges 61a are spaced apart vertically. Each sealing flange 61a is annular. The flange connecting cylinder 61b is cylindrical and connects the inner circumferences of the pair of sealing flanges 61a to each other. Specifically, the upper end of the flange connecting cylinder 61b is connected to the inner circumference of the upper sealing flange 61a, and the lower end of the flange connecting cylinder 61b is connected to the inner circumference of the lower sealing flange 61a.

[0156] According to this modified example, the opening gasket 61 can be easily elastically deformed, which can more stably improve the sealing performance provided by the opening gasket 61.

[0157] In the first embodiment described above, an example was given where the locking member 45 of the cover locking mechanism 40 is configured to rotate around the second hinge 44, but this is not a limitation. Although not specifically illustrated, the locking member may also be configured to slide freely in the front-rear direction. In this case, the locking state of the cover locking mechanism on the cover 20 can also be released by pressing the locking member to the rear.

[0158] <Second Implementation>

[0159] Next, refer to Figures 10-15The cap unit 103 and the beverage container 101 equipped with the cap unit 103 according to the second embodiment of the present invention will be described below. Furthermore, in this embodiment, structures that are the same as those in the above embodiments are sometimes labeled with the same names, reference numerals, etc., and their descriptions are omitted. Additionally, the definition of direction is the same as in the above embodiments unless otherwise specified.

[0160] like Figure 10 and Figure 11 As shown, the beverage container 101 of this embodiment includes: a cap unit 103; and a container body 2, on which the cap unit 103 is mounted. The cap unit 103 and the container body 2 are arranged coaxially about the central axis C.

[0161] The cap unit 103 is detachably mounted on the container body 2 with an upper opening. The cap unit 103 includes a cap body 10, an opening gasket 110, a cap body 20, a pressure release mechanism 130, a first hinge 30, a water-stop gasket 70, and a cap locking mechanism 140.

[0162] The cap unit 103 of this embodiment and the cap unit 3 described in the above embodiments have different structures, such as the drinking spout 11, the opening liner 110, the cap 20, the pressure release mechanism 130, and the cap locking mechanism 140.

[0163] like Figure 15 As shown, in this embodiment, the drinking spout 11 is a circular ring centered on the central axis C. Figure 11 As shown, the inner diameter of the drinking spout 11 is approximately constant along the vertical direction, and more specifically, it decreases slightly towards the lower side. Conversely, the outer diameter of the drinking spout 11 increases towards the lower side. That is, the wall thickness of the drinking spout 11 increases towards the lower side and decreases towards the upper side. Therefore, while ensuring the rigidity of the drinking spout 11, it also facilitates drinking.

[0164] Furthermore, when viewed from above, at least the lower end of the drinking spout 11 and the upper opening 2d are arranged to overlap each other.

[0165] The opening gasket 110 is elastically deformable, sealing the area between the cap body 10 and the upper opening 2d. In this embodiment, the opening gasket 110 is detachable from both the container body 2 and the cap body 10. However, it is not limited to this; the opening gasket 110 can also be fixed in a non-removable manner by bonding it to the cap body 10.

[0166] The opening liner 110 is positioned above the protrusion 8 and below the drinking spout 11. For example... Figure 11As shown, when viewed in cross-section along the central axis C (longitudinal section view), the opening gasket 110 is approximately U-shaped with an opening on the lower side. The opening gasket 110 has an inner cylinder portion 111, an outer cylinder portion 112, and a connecting portion 113.

[0167] The inner cylinder 111 is cylindrical, centered on the central axis C, and extends vertically. The inner cylinder 111 fits inside the upper end (upper opening 2d) of the neck 2c. The inner circumferential surface of the inner cylinder 111 is located radially outward from the inner circumferential end (innermost end) of the protrusion 8. Furthermore, the inner circumferential surface of the inner cylinder 111 is substantially coplanar with the inner circumferential surface of the drinking spout 11, i.e., the liquid inlet 12, or is located slightly radially inward from the liquid inlet 12.

[0168] By providing the inner cylinder portion 111, large steps or protrusions that would obstruct the flow of beverage from the protrusion 8 toward the liquid inlet 12 can be suppressed. Therefore, the flow of beverage is smoother, making it easier for the user to drink. Furthermore, by suppressing the formation of a depression between the protrusion 8 and the drinking spout 11 that would allow beverage entry, liquid residue in that area can be reduced.

[0169] The outer cylindrical portion 112 is cylindrical and extends vertically around the central axis C. The outer cylindrical portion 112 fits into the outer side of the upper end (upper opening 2d) of the neck 2c. The outer peripheral surface of the outer cylindrical portion 112 is in contact with or separated from the upper end of the inner peripheral surface of the peripheral wall portion 10b.

[0170] The connecting portion 113 is an annular plate centered on the central axis C, extending in a direction perpendicular to the central axis C. The connecting portion 113 is disposed in the liner receiving groove 10c. The inner periphery of the connecting portion 113 is connected to the upper end of the inner cylinder portion 111. The outer periphery of the connecting portion 113 is connected to the upper end of the outer cylinder portion 112.

[0171] The cover 20 is connected to the cap body 10 via the first hinge 30, thereby enabling... Figure 10 and Figure 11 The closed state (closed position) shown is the same as Figure 14 and Figure 15 It can rotate freely about the hinge center axis A between the open state shown.

[0172] also, Figure 12 and Figure 13 This diagram illustrates the various operational steps involved in transferring the cover 20 from a closed state to an open state. In detail, Figure 12 This indicates that the interior and exterior of the container body 2 are connected through the pressure relief mechanism 130 of this embodiment (i.e., the pressure inside the container body 2 has been released). Figure 13This indicates that the lid locking mechanism 140 of this embodiment has released the lid body 20 from being fixed (locked).

[0173] like Figure 11 As shown, the cover 20 has: a guide recess 27 recessed from the upper surface of the top wall portion 20a downward; a guide hole 28 disposed inside the guide recess 27 and penetrating the top wall portion 20a in the vertical direction; an inner wall portion 20c that hangs down from the top wall portion 20a; a support cylinder 141 mounted on the inner wall portion 20c; a press-in member 142 that penetrates the bottom wall of the support cylinder 141 in the vertical direction; a bolt portion 121 disposed on the lower side of the support cylinder 141 and supported by the press-in member 142; a valve gasket 131 that seals the space between the press-in member 142 and the bolt portion 121; a cutout portion 20d disposed at the front end of the peripheral wall portion 20b; a mounting recess 29 disposed on the peripheral wall portion 20b; and an anti-slip member 31 fitted into the mounting recess 29.

[0174] In this embodiment, the guide recess 27 is a groove extending in the front-rear direction. The guide recess 27 is disposed approximately at the center of the top wall portion 20a.

[0175] The guide hole 28 is round and is located in the center of the guide recess 27 in the front-back direction.

[0176] The inner wall portion 20c is a wall portion extending downward from the lower surface of the top wall portion 20a, and is roughly C-shaped when viewed from below. The inner wall portion 20c is positioned outside the guide hole 28, extending in a curved manner to surround the guide hole 28 (see reference). Figure 15 ).

[0177] The support cylinder 141 is a generally bottomed cylindrical shape with an upward opening. The support cylinder 141 is disposed on the lower side of the top wall portion 20a and fitted into the inner wall portion 20c. The support cylinder 141 is fixed to the inner wall portion 20c and cannot move by means of undercut fitting or the like. The inner diameter of the support cylinder 141 is larger than the inner diameter of the guide hole 28. The support cylinder 141 is disposed inside the drinking spout portion 11.

[0178] The support cylinder 141 has a guide cylinder 141a, an insertion hole 141b, a lower limiting pin 141c, and an upper protruding pin 141d.

[0179] The guide tube 141a protrudes upward from the bottom wall of the support tube 141. The guide tube 141a is a cylindrical shape that extends in the vertical direction.

[0180] An insertion hole 141b is disposed inside the guide cylinder 141a, forming the internal space of the guide cylinder 141a. The insertion hole 141b is a circular hole extending in the vertical direction, penetrating the bottom wall of the support cylinder 141 in the vertical direction. That is, the insertion hole 141b opens on the upper end face of the guide cylinder 141a and the lower surface of the bottom wall of the support cylinder 141, respectively. In this embodiment, the central shaft C passes through the interior of the insertion hole 141b. That is, the insertion hole 141b is located on the central shaft C.

[0181] The lower limiting pin 141c protrudes upward from the bottom wall of the support cylinder 141. The lower limiting pin 141c is a columnar shape extending in the vertical direction, and in this embodiment, it is prismatic. The lower limiting pin 141c is positioned forward of the guide cylinder 141a. The upward protrusion of the lower limiting pin 141c from the bottom wall of the support cylinder 141 is greater than the upward protrusion of the guide cylinder 141a from the bottom wall of the support cylinder 141. The upper end face of the lower limiting pin 141c is positioned upward of the upper end face of the guide cylinder 141a.

[0182] The upper protruding pin 141d protrudes upward from the front end of the bottom wall of the support cylinder 141. The upper protruding pin 141d is cylindrical or cylindrical in the vertical direction. The upper protruding pin 141d is positioned forward of the guide cylinder 141a and the lower limiting pin 141c.

[0183] The press-in component 142 is disposed on the lower side of the top wall portion 20a. The press-in component 142 is located directly below the guide hole 28. The press-in component 142 has: a generally circular plate-shaped press-in body 150 extending in a direction perpendicular to the central axis C; and a columnar valve stem 151 extending downward from the press-in body 150 in a vertical direction.

[0184] The press-in body 150 is disposed on the upper side of the guide tube 141a. The press-in body 150 has a flange (not shown) that protrudes radially outward from the outer peripheral surface of the press-in body 150 and extends circumferentially. The outer diameter of the flange is larger than the inner diameter of the guide hole 28. The flange contacts the portion around the guide hole 28 in the lower surface of the top wall portion 20a from below. Thus, the press-in body 150 (press-in member 142) is restricted from moving upward beyond the guide hole 28.

[0185] Although not specifically illustrated, the press-in body 150 has a guide slit that extends vertically by cutting a portion of the aforementioned flange. A guide rib (not shown) protrudes radially inward from the inner circumference of the inner wall portion 20c and extends vertically through the guide slit. This engagement restricts circumferential rotation and radial (front-back, left-right, etc.) movement of the press-in body 150 (press-in member 142). Furthermore, the press-in body 150 (press-in member 142) can move freely vertically by sliding the guide slit relative to the guide rib. Additionally, the press-in member 142 is held in a state where the flange is pressed against the lower surface of the top wall portion 20a by the press-in force-applying member 148 (described later).

[0186] Additionally, the press-in body 150 has a guide recess 150a. The guide recess 150a is a generally slit-shaped portion that extends through the press-in body 150 in the vertical direction and extends in the front-back direction. The guide recess 150a has openings at its front ends in the upper surface, lower surface, and outer peripheral surface of the press-in body 150. The rear end of the guide recess 150a is concave towards the rear.

[0187] The valve stem 151 protrudes downward from the lower surface of the press-in body 150. The valve stem 151 is inserted into the through hole 141b. The valve stem 151 extends vertically from the upper side of the guide cylinder 141a to the lower side of the bottom wall of the support cylinder 141. That is, the valve stem 151 has a portion that protrudes downward further than the bottom wall of the support cylinder 141. The valve stem 151 is guided by the guide cylinder 141a and the through hole 141b to slide freely in the vertical direction.

[0188] In this embodiment, the valve stem 151 is located on the central axis C. More specifically, the central axis of the valve stem 151 (not shown in the figure) is located in a position that is close to and slightly rearward of the central axis C. However, it is not limited to this; the central axis of the valve stem 151 and the central axis C may also be configured coaxially with each other.

[0189] The valve stem 151 has a valve liner support portion 151a and a press-in surface 151b. The valve liner support portion 151a and the press-in surface 151b are disposed in the valve stem 151 at a portion that protrudes downward beyond the bottom wall of the support cylinder 141.

[0190] A valve gasket support portion 151a is disposed at the lower end of the valve stem 151. The valve gasket support portion 151a is a flange-shaped portion that protrudes radially outward from the lower end of the outer peripheral surface of the valve stem 151, orthogonal to the central axis of the valve stem 151. The upper surface of the valve gasket support portion 151a is a planar portion that extends in a direction perpendicular to the central axis of the valve stem 151. At least the outer peripheral portion of the lower surface of the valve gasket support portion 151a is conical, extending upward toward the radially outward direction orthogonal to the central axis of the valve stem 151.

[0191] The press-in surface 151b is disposed on the outer peripheral surface of the valve stem 151, located above the valve liner support portion 151a. The press-in surface 151b is a surface facing at least downwards, and in this embodiment, it is conical. The press-in surface 151b is an annular surface centered on the central axis of the valve stem 151, extending upwards toward the outer side in a radial direction orthogonal to the central axis of the valve stem 151.

[0192] The plug 121 passes through the inside of the drinking spout 11 and is inserted into the upper opening 2d. The plug 121 is disposed inside the neck 2c. The plug 121 has a cylindrical body 122 and a gasket mounting flange 123.

[0193] The cylinder 122 is a bottomed cylindrical shape that extends in the vertical direction. The cylinder 122 has: a vent 125 that penetrates the bottom wall of the cylinder 122 in the vertical direction; and a receiving surface 126 disposed around the vent 125 in the bottom wall of the cylinder 122.

[0194] The vent 125 is a circular hole extending vertically. A valve stem 151 is inserted into the interior of the cylinder 122 and through the vent 125. The valve liner support 151a of the valve stem 151 is positioned lower than the bottom wall of the cylinder 122. The pressing surface 151b of the valve stem 151 is positioned upper than the bottom wall of the cylinder 122.

[0195] The receiving surface 126 is a surface facing upwards at least, and in this embodiment, it is conical. The receiving surface 126 is an annular surface centered on the central axis of the cylinder 122, extending upwards toward the outer side in a radial direction orthogonal to the central axis of the cylinder 122. The receiving surface 126 is spaced apart from the pressing surface 151b in the vertical direction.

[0196] The gasket mounting flange 123 is a flange-shaped protrusion that extends radially outward from the lower end of the outer peripheral surface of the cylinder 122, orthogonal to the central axis of the cylinder 122. Viewed radially, the gasket mounting flange 123 overlaps with the protrusion 8.

[0197] The valve gasket 131 is made of a deformable component such as silicone rubber or an elastomer. The valve gasket 131 is generally cylindrical and extends vertically. The lower end of the valve stem 151 is fitted inside the valve gasket 131. The lower end face of the valve gasket 131 contacts the upper surface of the valve gasket support portion 151a. The upper end face of the valve gasket 131 contacts the lower surface of the bottom wall of the cylinder 122 (i.e., the lower surface of the plug portion 121). By providing the valve gasket 131, the communication between the interior and exterior of the container body 2 through the vent hole 125 is cut off. When the pressing member 142 moves downward, the valve gasket 131 moves downward together with the pressing member 142, and the upper end face of the valve gasket 131 moves away from the lower surface of the plug portion 121. That is, the valve gasket 131 closes the vent hole 125 in an openable manner.

[0198] like Figure 10 and Figure 11 As shown, the cut-out portion 20d is a cut-shaped opening located at the lower front end of the cover peripheral wall portion 20b. The cut-out portion 20d extends through the cover peripheral wall portion 20b in the front-rear direction. The cut-out portion 20d opens on the outer and inner peripheral surfaces of the cover peripheral wall portion 20b, and also opens on the lower end surface of the cover peripheral wall portion 20b. When viewed from the front, the cut-out portion 20d is roughly in the shape of a "コ" with an opening to the lower side.

[0199] The mounting recess 29 is a groove-shaped portion that is recessed radially inward from the outer peripheral surface of the cover peripheral wall portion 20b and extends circumferentially. The mounting recess 29 is configured to extend in a generally C-shape on the outer peripheral surface of the cover peripheral wall portion 20b. Specifically, the mounting recess 29 is disposed on the portion of the outer peripheral surface of the cover peripheral wall portion 20b excluding the rear end. The mounting recess 29 is disposed at a position higher than the cutout portion 20d.

[0200] The anti-slip component 31 is made of heat-resistant rubber such as silicone rubber, or an elastic component such as an elastomer, and is roughly C-shaped with an open circumferential portion. The anti-slip component 31 is detachably mounted to the mounting recess 29. Alternatively, the anti-slip component 31 can be fixed to the mounting recess 29 in a non-detachable manner. With the anti-slip component 31 mounted to the mounting recess 29, its outer circumferential surface is arranged to be approximately coplanar, continuous with the outer circumferential surface of the cover peripheral wall 20b. By providing the anti-slip component 31, the user can easily grip the cover 20 and easily operate the operation button 143 described later.

[0201] Furthermore, although not specifically illustrated, the anti-slip component 31 covers the ends of the first hinge 30 (metal shaft) and the second hinge 144 (metal shaft), which will be described later. Therefore, the anti-slip component 31 protects the first hinge 30 and the second hinge 144 and improves their water resistance. This helps to prevent damage, detachment, and rusting of the first hinge 30 and the second hinge 144.

[0202] The cap locking mechanism 140 is arranged from the front of the cap unit 103 to the center in the front-rear direction. For example... Figure 11 As shown, the cap locking mechanism 140, when the cap body 20 is in the closed position (closed liquid inlet 12), overcomes the force of the torsion coil spring (force application part) of the first hinge 30 and fixes the cap body 20 relative to the cap body 10. That is, the cap locking mechanism 140 fixes the cap body 20 relative to the cap body 10 in the closed position.

[0203] The cover locking mechanism 140 includes: a locking member 145, which is rotatably mounted to the cover body 20 via a second hinge 144; the aforementioned pressing member 142, which engages with the inner wall portion 20c and the support cylinder 141 and is freely movable up and down; an operation button 143, which is freely movable in the front-back direction relative to the pressing member 142; a locking force application member 146; a pressing force application member 148; and a sliding force application member 152. Furthermore, the hinge center axis (not shown) of the second hinge 144 is disposed inside the cover peripheral wall portion 20b of the cover body 20 and extends in the left-right direction.

[0204] The locking member 145 is supported by a second hinge 144 at its front end, which is located within the cover periphery wall 20b of the cover body 20, and is rotatable. The locking member 145 has: a first extension 145a that extends downward from the second hinge 144; and a second extension 145b that extends rearward after extending upward from the second hinge 144.

[0205] The lower end of the first extension 145a is disposed within the cutout 20d and protrudes from the outer periphery of the cover peripheral wall 20b to the outside of the cap. The radially outward surface (outer surface) of the lower end of the first extension 145a is configured to be substantially coplanar with the outer periphery of the cover peripheral wall 20b.

[0206] The portion of the first extension 145a excluding the lower end and the second extension 145b are disposed inside the periphery wall portion 20b.

[0207] Due to this structure, the cover 20 is locked in the closed position by the cover locking mechanism 140. Figure 11 In the closed state shown, the locking component 145 does not protrude radially outward from the outer periphery of the cover 20.

[0208] A hook (locking part) 147 is provided at the front end of the first extension 145a (the lower end of the locking member 145) and protrudes rearward. That is, the cap locking mechanism 140 has the hook 147, which is disposed at the front of the cap unit 103. The hook 147 engages with the cap body 20 or the cap body 10; in this embodiment, it engages with the cap body 10.

[0209] In addition, the cover locking mechanism 140 has a locking receiving part (locked part) 149 that locks the hook part 147 of the locking member 145.

[0210] The locking receiving portion 149 is a claw-shaped part that protrudes forward from the upper front end of the peripheral wall portion 10b of the cap body 10. The lower surface of the locking receiving portion 149 contacts the upper surface of the hook portion 147, thereby locking the locking receiving portion 149 into the hook portion 147. That is, the hook portion 147 engages with the locking receiving portion 149 disposed on the cap body 10.

[0211] In this embodiment, the front portion of the drinking spout 11 protrudes upwards more than the hook portion 147. Additionally, in Figure 14 In the open state of the cover 20 shown, the front part of the drinking spout 11 protrudes upwards more than the locking receiving part 149 that is locked to the hook part 147.

[0212] like Figure 11 As shown, the second extension 145b has: an outer portion 145ba, which is curved and convex upward when viewed from the left and right direction; an inner portion 145bb, which is disposed radially inside the outer portion 145ba; and a lower protruding pin 145c.

[0213] The outer portion 145ba is disposed on the upper side of the front part of the drinking spout 11. The outer portion 145ba extends in a curved manner, surrounding the front end of the upper edge of the drinking spout 11 from the front, upper, and rear sides. Therefore, in this embodiment, although the locking member 145 is disposed inside the cover 20, the increase in the vertical dimension of the cover 20 is suppressed, and a large amount of protrusion of the front part of the drinking spout 11 from the top wall portion 10a to the upper side is ensured.

[0214] The inner portion 145bb connects to the radially inner end of the outer portion 145ba and extends in the front-rear direction. Viewed from above, the inner portion 145bb overlaps with the front end of the bottom wall of the support cylinder 141. Furthermore, viewed from above, at least the radially inner end of the inner portion 145bb is disposed within the guide hole 28. That is, the inner portion 145bb protrudes inward toward the guide hole 28.

[0215] The lower protruding pin 145c protrudes downward from the inner portion 145bb. The lower protruding pin 145c is a column extending in the vertical direction. The lower protruding pin 145c is positioned directly above the upper protruding pin 141d.

[0216] Operation button 143 is located on the upper part of cover 20. Operation button 143 is a generally circular plate extending in a direction perpendicular to the central axis C. The outer diameter of operation button 143 is smaller than the inner diameter of guide hole 28. For example... Figures 11-13 As shown, the operation button 143 can be inserted into the guide hole 28 in the vertical direction. That is, the operation button 143 can move through the guide hole 28 to the upper and lower sides of the top wall portion 20a.

[0217] In addition, such as Figure 11 As shown, with the circular portion of the operation button 143 (the upper portion of the operation button 143, which can also be referred to as the operation body portion) disposed on the upper side of the top wall portion 20a, the operation button 143 can slide in the front-back direction within the guide recess 27.

[0218] exist Figure 11 The position of the forward end of the operation button 143 shown, when viewed from above, is such that the front end of the operation button 143 overlaps with the front end of the guide recess 27. Figure 12 and Figure 13 The rear end of the operation button 143 shown is positioned, when viewed from above and below, and the operation button 143 is disposed (accommodated) within the guide hole 28.

[0219] like Figure 11 As shown, the operation button 143 has a guide protrusion 143a, an upper limiting pin 143b, and a rear protruding pin 143c.

[0220] A guide protrusion 143a protrudes downward from the circular plate-shaped portion (operation body portion) of the operation button 143 and extends in the front-rear direction. The guide protrusion 143a engages within the guide recess 150a of the pressing member 142 in a manner that allows free sliding in the front-rear direction. This engagement allows the operation button 143 to slide relative to the pressing member 142 in the front-rear direction. Furthermore, this engagement restricts the up-down movement and left-right movement of the operation button 143 relative to the pressing member 142.

[0221] The upper limiting pin 143b is positioned below the circular portion of the operation button 143. In this embodiment, the upper limiting pin 143b protrudes downward from the guide protrusion 143a. The upper limiting pin 143b is a column extending in the vertical direction; in this embodiment, it is prismatic.

[0222] exist Figure 11At the forward position of the operation button 143 shown, the lower end face of the upper limiting pin 143b faces the upper end face of the lower limiting pin 141c. Therefore, at the forward position of the operation button 143, the downward movement of the operation button 143 and the pressing member 142 is restricted by the contact between the upper limiting pin 143b and the lower limiting pin 141c.

[0223] In addition, Figure 12 and Figure 13 In the retracted position of the operation button 143 shown, the upper limiting pin 143b is positioned further back than the lower limiting pin 141c, and the lower end face of the upper limiting pin 143b and the upper end face of the lower limiting pin 141c are not opposite each other. Therefore, in the retracted position of the operation button 143, the operation button 143 and the pressing member 142 are allowed to move downwards.

[0224] like Figure 11 As shown, the rear protruding pin 143c is positioned below the circular portion of the operation button 143. In this embodiment, the rear protruding pin 143c protrudes rearward from the upper limiting pin 143b. The rear protruding pin 143c is a columnar shape extending in the front-rear direction.

[0225] The locking force-applying member 146 is elastically deformable, such as a compression coil spring. The locking force-applying member 146 is disposed within the support cylinder 141 and extends vertically. An upper protruding pin 141d is inserted into the lower end of the locking force-applying member 146. A lower protruding pin 145c is inserted into the upper end of the locking force-applying member 146. The lower end of the locking force-applying member 146 contacts the bottom wall of the support cylinder 141 from above. The upper end of the locking force-applying member 146 contacts the inner portion 145bb of the second extension 145b from below. The locking force-applying member 146 faces one side of the second hinge 144 (in... Figure 11 The locking component 145 is subjected to force in the counterclockwise direction centered on the second hinge 144 (which can also be referred to as the locking direction).

[0226] The pressing force-applying component 148 is elastically deformable, such as a compression coil spring. The pressing force-applying component 148 is disposed within the support cylinder 141 and extends vertically. A valve stem 151 is inserted into the pressing force-applying component 148. Additionally, a guide cylinder 141a is inserted into the lower end of the pressing force-applying component 148. The lower end of the pressing force-applying component 148 contacts the bottom wall of the support cylinder 141 from above. The upper end of the pressing force-applying component 148 contacts the lower surface of the pressing body 150 from below. The pressing force-applying component 148 applies force upwards to the pressing component 142 and the operating button 143 that engages with the pressing component 142.

[0227] The sliding force-applying component 152 is elastically deformable, such as a compression coil spring. The sliding force-applying component 152 is disposed within the guide recess 150a and extends in the front-rear direction. A rear protruding pin 143c is inserted into the front end of the sliding force-applying component 152. The front end of the sliding force-applying component 152 contacts the rear surface of the upper limiting pin 143b from the rear side. The rear end of the sliding force-applying component 152 contacts the rear-end facing surface of the guide recess 150a from the front side. The sliding force-applying component 152 applies force to the operating button 143 towards the front.

[0228] The pressure relief mechanism 130 disconnects the interior and exterior of the container body 2 in a manner that allows communication. Specifically, the pressure relief mechanism 130 can disconnect the vent 125, and when the internal pressure of the container body 2 changes (decreases or increases), it can reconnect the vent 125 to release the pressure in the container body 2. The pressure relief mechanism 130 includes the aforementioned plug 121, vent 125, valve gasket 131, push-in member 142, and operation button 143. That is, in this embodiment, the pressure relief mechanism 130 is provided on the cover 20.

[0229] The water-stop gasket 70 is installed in the plug portion 121 in a removable manner. The water-stop gasket 70 is fitted into the gasket mounting flange 123 of the plug portion 121. The water-stop gasket 70 has: a bottomed cylindrical gasket body 71; an inner flange 72 that protrudes radially inward from the upper end of the peripheral wall of the gasket body 71; and an outer flange 73 that protrudes radially outward from the upper end of the peripheral wall of the gasket body 71.

[0230] The upper surface of the bottom wall of the gasket body 71 contacts the lower surface of the gasket mounting flange 123. The peripheral wall of the gasket body 71 surrounds the gasket mounting flange 123 circumferentially from the radially outer side.

[0231] The gasket body 71 has a circular connecting hole 71a centered on the central axis C. The connecting hole 71a is disposed at the center of the bottom wall of the gasket body 71. Viewed from above, the connecting hole 71a overlaps with the vent hole 125. In this embodiment, the inner diameter of the connecting hole 71a is larger than the inner diameter of the vent hole 125. A valve gasket 131 is disposed inside the connecting hole 71a.

[0232] The lower surface of the inner flange 72 contacts the upper surface of the gasket mounting flange 123.

[0233] The outer flange 73 is in liquid-tight contact with the protrusion 8. Thus, the water-stop gasket 70 seals the plug 121 and the protrusion 8. That is, in this embodiment, the water-stop gasket 70 also directly seals the cover 20 (plug 121) and the container body 2 (protrusion 8).

[0234] Next, the method of using the cap unit 103 of this embodiment (the method of opening the cap) will be described.

[0235] exist Figure 11 In the closed and locked state of the cover 20 shown, the user overcomes the force of the sliding force application component 152 to slide the operation button 143 from the forward end position to the backward end position (moving backward).

[0236] If the user moves the operation button 143 from the back position, as follows Figure 12 The operating button 143 is pressed downward against the force exerted by the pressing member 148, and is then inserted into the guide hole 28. At this time, the pressing member 142 and the operating button 143 move downward together, and the upper end of the valve gasket 131 faces downward away from the lower surface of the plug 121, and the vent hole 125 communicates with the interior of the container body 2. Thus, the interior and exterior of the container body 2 are connected through the vent hole 125 (i.e., the pressure inside the container body 2 is released). At this time, the pressing surface 151b of the valve stem 151 contacts the receiving surface 126 of the plug 121 from above.

[0237] If the user presses the operation button 143 further downwards, then as follows Figure 13 As shown, the front end of the circular plate-shaped portion (operating body portion) of the operation button 143 presses down on the second extension 145b of the locking member 145, and the locking member 145 overcomes the force of the locking force application member 146 to move towards the other side of the second hinge 144 (in Figure 13 The rotation is clockwise (or can be referred to as the lock release direction) centered on the second hinge 144. As a result, the first extension 145a moves forward, and the locking state of the hook 147 relative to the locking receiver 149 is released.

[0238] The cover 20 is in the unlocked state because the locking receiving part 149 and the hook part 147 are released from their locked state. Through the force of the torsion spring of the first hinge 30, the cover 20 rotates in the opening direction, becoming... Figure 14 and Figure 15 The cover 20 shown is in the open state.

[0239] The same effects as those in the above-described embodiments can also be obtained in the cap unit 103 and beverage container 101 of this embodiment.

[0240] More specifically, in this embodiment, the front portion of the drinking spout 11 protrudes upwards more than the hook (locking portion) 147 of the cap locking mechanism 140. Therefore, when the cap 20 is in the open state, it protrudes upwards more than the locking receiving portion (locked portion) 149 that locks with the hook 147. Thus, when the user touches the drinking spout 11 with their mouth (lips) from the front to drink a beverage, it can prevent the lower lip, chin, etc., from contacting the locking receiving portion 149. The user can smoothly drink a beverage from the front of the cap unit 103, making it difficult to experience discomfort during use and providing a good user experience.

[0241] In addition, in this embodiment, the cap locking mechanism 140 is housed within the cap body 20 and does not protrude outward from the cap unit 103, thus enabling the cap to be miniaturized and its appearance improved.

[0242] Furthermore, in this embodiment, the pressure relief mechanism 130 can release the pressure reduction state of the container body 2. That is, the pressure relief mechanism 130 releases the cut-off state of the valve gasket 131 to the vent 125, allowing air to be drawn in from the vent 125, thereby eliminating the pressure difference between the inside and outside of the container body 2 and making the cover 20 easy to open.

[0243] Furthermore, in this embodiment, the pressure release mechanism 130 releases the pressure inside the container body 2 during the locking and unlocking operation of the lid locking mechanism 140 on the lid body 20. That is, the locking and unlocking operation of the lid locking mechanism 140 and the pressure release operation of the pressure release mechanism 130 are performed continuously through a series of operations, thus ensuring good operability.

[0244] Furthermore, in the first and second embodiments described above, examples of applying the present invention to beverage containers 1 and 101 that possess heat preservation and cold preservation functions through a container body 2 with a vacuum insulation structure were given, but the invention is not limited thereto. That is, the present invention can be widely applied to capped containers in which the cap unit is detachably installed at the neck of the container body.

[0245] For the purposes of this invention, the structures described in the above embodiments and variations can be combined without departing from the spirit of the invention. Furthermore, additions, omissions, substitutions, and other modifications to the structures are also possible. Moreover, this invention is not limited to the above embodiments, but only to the technical solutions claimed in this application.

Claims

1. A cap unit, detachably mounted on a container body with an upper opening, characterized in that, have: The cap body is installed at the upper opening of the container body and has a liquid inlet that connects the inside and outside of the container body; A cover that covers the liquid inlet from above; A hinge connects the cover body relative to the cap body, allowing it to rotate freely; A water-stop liner directly seals the cover and the container body; as well as The cover locking mechanism secures the cover body relative to the cap body in the closed position. The cover locking mechanism has a locking part that engages with the cover body or the cap body. The hinge is located at the rear of the cap unit. The locking part is located at the front of the cap unit. The cap body has a drinking spout, which is positioned directly above the upper opening. When viewed from above, at least the lower end of the drinking spout overlaps with the upper opening, and the drinking spout has a liquid inlet formed inside. The inner diameter of the drinking spout is constant in the vertical direction. The drinking spout extends vertically in a manner connected to the upper opening, and the front part of the drinking spout protrudes upwards more than the locking part.

2. The cap unit according to claim 1, characterized in that, The cap has a plug that passes through the inside of the drinking spout and is inserted into the upper opening. The water-stopping gasket seals the plug between the plug and the protrusion located on the inner side of the container body.

3. The cap unit according to claim 1 or 2, characterized in that, It has an opening liner that seals the cap body and the upper opening.

4. The cap unit according to claim 1 or 2, characterized in that, It is equipped with a pressure relief mechanism that disconnects the interior and exterior of the container body in a manner that allows communication.

5. The cap unit according to claim 3, characterized in that, It is equipped with a pressure relief mechanism that disconnects the interior and exterior of the container body in a manner that allows communication.

6. The cap unit according to claim 2, characterized in that, The protrusion is positioned lower than the upper opening.

7. A cap unit, detachably mounted to a container body with an upper opening, characterized in that, have: The cap body is installed at the upper opening of the container body and has a liquid inlet that connects the inside and outside of the container body; A cover that covers the liquid inlet from above; A hinge connects the cover body relative to the cap body, allowing it to rotate freely; A water-stop liner directly seals the cover and the container body; A cover locking mechanism secures the cover body relative to the cap body in the closed position; as well as An opening liner that seals the area between the cap body and the upper opening. The cover locking mechanism has a locking part that engages with the cover body or the cap body. The hinge is located at the rear of the cap unit. The locking part is located at the front of the cap unit. The cap body has a drinking spout, which has approximately the same diameter as the upper opening and is positioned directly above the upper opening. The drinking spout also has an internal liquid inlet. The drinking spout extends vertically in a manner connected to the upper opening, and the front portion of the drinking spout protrudes upwards more than the locking portion. The cap has a plug that passes through the inside of the drinking spout and is inserted into the upper opening. The water-stopping gasket seals the plug between the plug and the protrusion located on the inner side of the container body.

8. A beverage container, characterized in that, have: The cap unit according to any one of claims 1 to 7; and The container body is fitted with the cap unit.

Images