Cap unit and beverage container

Abstract

To provide a cap unit in which the loss of components is suppressed, the timing when beverage is replenished or flows out through a liquid passage port can be easily recognized, the mouth touch feeling when touching the mouth to a spout portion is good, and it is easy to place the mouth on the spout portion even if the beverage is hot, and it is easy to use and the beverage is easy to drink, and a beverage container.SOLUTION: The cap unit includes: a cap body 10 having a liquid passage port 12; a lid body 20 for covering the liquid passage port 12 from above; a hinge 30; a waterproof packing 70 for sealing a space between the lid 20 and a container body 2; and a lid lock mechanism 40 for fixing the lid body 20 to the cap body 10 at a closed position. The lid lock mechanism 40 has an engaging portion 47 for engaging with the lid body 20 or the cap body 10. The cap body 10 is arranged above an upper opening 2d of the container body 2 and has a spout portion 11 with the liquid passage port 12 formed therein. The spout portion 11 extends vertically so as to connect with the upper opening 2d, and has a front portion thereof protrudes above the engaging portion 47 .SELECTED DRAWING: Figure 3

Description

[Technical Field]

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

[0002] BACKGROUND ART Conventionally, cap units that can be detachably attached to a container body having an open top are known, for example, from Patent Documents 1 and 2.

[0003] The cap unit described in Patent Document 1 has a spout-forming member that forms a drinking spout or pouring spout detachably attached to the opening of the cap body, and a spout-removal mechanism for detachably attaching the spout-forming member to the opening of the cap body is provided between the cap body and the spout-forming member. A waterproof gasket is also detachably attached to the lower flange of the spout-forming member. The waterproof gasket is a ring-shaped sealing member that seals the gap between the spout-forming member and a stepped portion (projecting portion) that protrudes around the entire circumference inside the neck of the container body.

[0004] The stopper described in Patent Document 2 comprises a stopper main body that is detachably threaded onto the opening of a container main body, a first lid that is attached to the stopper main body by a hinge mechanism so as to be openable and closable and closes the drinking spout (opening) of the container main body in the closed state, a first sealant that is attached to the first lid and seals the gap between the opening of the container main body and the first lid when the first lid is closed, a second lid that is attached to the stopper main body by the hinge mechanism so as to be openable and closes the first lid from the outside in the closed state, a second sealant that is attached to the second lid and closes a hole in the first lid when the second lid is closed, and a locking part that is attached to the stopper main body and engages with the second lid or the first lid to keep the stopper in the closed state. The locking part is located radially opposite the hinge mechanism (i.e., at the front of the stopper). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6554356 [Patent Document 2] Patent No. 6346785 Summary of the Invention [Problem to be solved by the invention]

[0006] The cap unit of Patent Document 1 can be disassembled and cleaned, but it has a large number of parts, many of which need to be washed. In addition, the assembly and disassembly work is time-consuming, and there is a risk of losing disassembled parts. In addition, the liquid passage hole of the spout-forming member is narrow, making it difficult to see inside the container body with the cap unit attached, making it difficult for users to tell when the beverage is coming out of the liquid passage hole when drinking.Furthermore, when refilling the container body with beverage, it is necessary to remove the cap unit, which is time-consuming.

[0007] The stopper of Patent Document 2 has a drinking spout near the left and right ends of the opening of the container body. However, in many commonly used beverage containers with cap units, the drinking spout is located at the same front as the locking part (lid locking mechanism), meaning that the beverage is drunk from the front of the container, so drinking from the left or right side of the opening of the container body as in Patent Document 2 may be unfamiliar to the user (usage sensation). In addition, because the container body is made of metal, the user may feel uncomfortable when placing their mouth on the opening (drinking spout) of the container body. Also, because the heat of hot beverages is easily transferred to the drinking spout, it may be difficult for the user to place their mouth on the drinking spout.

[0008] One of the objects of the present invention is to provide a cap unit and a beverage container that can prevent loss of parts, make it easy to refill a beverage through a liquid passage and to visually check the timing when the beverage comes out, have a good mouthfeel when a user puts the spout to their mouth, and make it easy to put the spout to their mouth even when the beverage is hot, making it easy to use and drink the beverage. [Means for solving the problem]

[0009] One aspect of the present invention is a cap unit that can be detachably attached to a container body that is open at the top, the cap unit comprising: a cap body that is attached to the top opening of the container body and has a liquid passage that connects the inside and outside of the container body; a lid that covers the liquid passage from above; a hinge that rotatably connects the lid to the cap body; a waterproof gasket that directly seals the gap between the lid and the container body; and a lid locking mechanism that fixes the lid to the cap body in a closed position, the lid locking mechanism having a locking portion that locks with the lid or the cap body, the hinge being located at the rear of the cap unit and the locking portion being located at the front of the cap unit, the cap body comprising: The upper opening has a diameter substantially the same as that of the upper opening, and the upper opening is directly above the upper opening. The drinking spout portion is arranged on the upper opening and has the liquid passage formed therein, the drinking spout portion extends in the vertical direction so as to be connected to the upper opening, and the front portion of the drinking spout portion protrudes above the locking portion.

[0010] In the above cap unit, it is preferable that the lid body has a stopper portion that is inserted into the upper opening through the inside of the drinking spout portion, and the water-stop gasket seals the space between the stopper portion and a protrusion that protrudes from the inside of the container body.

[0011] The cap unit preferably includes an opening packing that seals the gap between the cap body and the upper opening.

[0013] In the above cap unit, it is preferable that the lid body has a pressure release mechanism, which includes an air vent that penetrates the bottom wall of the stopper portion in the vertical direction and a valve gasket that blocks the air vent so that it can be opened and closed freely, and which is capable of blocking the communication of the air vent and releasing the blockage to open the air vent and release the pressure in the container body. In the cap unit, the protruding portion is preferably provided below the upper opening. Another aspect of the present invention is a cap unit that can be detachably attached to a container body that is open at the top, comprising: a cap body that is attached to the top opening of the container body and has a liquid passage port that connects the inside and outside of the container body; a lid body that covers the liquid passage port from above; a hinge that rotatably connects the lid body to the cap body; a waterproof gasket that directly seals the gap between the lid body and the container body; a lid lock mechanism that fixes the lid body in a closed position relative to the cap body; and an opening gasket that seals the gap between the cap body and the top opening, wherein the lid lock mechanism is attached to the lid body or the cap body. The cap body has a locking portion that locks with the cap body, the hinge is arranged at the rear of the cap unit, the locking portion is arranged at the front of the cap unit, the cap body has a drinking spout portion that has approximately the same diameter as the upper opening and is arranged directly above the upper opening, and has the liquid passage formed therein, the drinking spout portion extends in the vertical direction to be connected to the upper opening, the front portion of the drinking spout portion protrudes above the locking portion, the lid body has a stopper portion that is inserted into the upper opening through the inside of the drinking spout portion, and the watertight gasket seals the space between the stopper portion and a protrusion that protrudes from the inside of the container body. Furthermore, one aspect of the beverage container of the present invention comprises the cap unit described above and the container body to which the cap unit is attached. [Effects of the Invention]

[0015] According to one embodiment of the cap unit and beverage container of the present invention, it is possible to reduce the loss of parts, it is easy to refill the beverage through the liquid passage and to visually check the timing when the beverage is coming out, the mouthpiece feels good when the user puts their mouth to the drinking part, and it is easy to put the mouth to the drinking part even when the beverage is hot, making it easy to use and drink the beverage. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a perspective view showing a beverage container according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view showing a beverage container. [Figure 3] FIG. 3 is a cross-sectional view showing a part of the beverage container, showing the lid in the closed state (closed position). [Figure 4] FIG. 4 is a cross-sectional view of a portion of a beverage container, showing the lid in an intermediate state as it transitions between a closed state and an open state. [Figure 5] FIG. 5 is a cross-sectional view showing a part of the beverage container, with the lid in an open state (open position). [Figure 6] FIG. 6 is a perspective view showing a beverage container. [Figure 7] FIG. 7 is a perspective view of a beverage container, showing the inside of the container body visible through the liquid passage. [Figure 8] FIG. 8 is a cross-sectional view showing a part of a beverage container, illustrating a state in which the inside and outside of the container body are in communication with each other due to the pressure release mechanism (that is, a state in which the pressure inside the container body is released). [Figure 9] FIG. 9 is a cross-sectional view showing a part of a beverage container, illustrating a modified example of the opening packing. [Figure 10] FIG. 10 is a perspective view showing a beverage container according to a second embodiment of the present invention. [Figure 11] FIG. 11 is a cross-sectional view showing a part of the beverage container, with the lid in the closed state (closed position). [Figure 12]FIG. 12 is a cross-sectional view showing a part of a beverage container, illustrating a state in which the inside and outside of the container body are in communication with each other due to the pressure release mechanism (that is, a state in which the pressure inside the container body is released). [Figure 13] FIG. 13 is a cross-sectional view showing a part of the beverage container, illustrating a state in which the lid body is released from the fixation (lock) by the lid locking mechanism. [Figure 14] FIG. 14 is a cross-sectional view showing a part of the beverage container, showing the lid in an open state (open position). [Figure 15] FIG. 15 is a perspective view showing a part of a beverage container, showing the inside of the container body through the liquid passage opening. DETAILED DESCRIPTION OF THE INVENTION

[0017] First Embodiment A cap unit 3 according to a first embodiment of the present invention and a beverage container 1 equipped with the same will be described with reference to Figures 1 to 8. In the following description, the cap unit 3 may be simply referred to as a cap, and the beverage container 1 may be simply referred to as a container.

[0018] 1 and 2, a beverage container 1 of this embodiment includes a cap unit 3 and a cylindrical container body 2 with a bottom to which the cap unit 3 is attached. The cap unit 3 is detachably attached to an opening (a neck portion 2c described below) of the container body 2 by screwing, and constitutes a stopper that closes the opening of the container body 2 in an openable and closable manner.

[0019] The cap unit 3 comprises a cylindrical, or capped, cap body 10 having a top wall (ceiling wall), an opening gasket 60, a capped cylindrical lid body 20, a pressure release mechanism 80, a first hinge (hinge) 30 that rotatably connects the lid body 20 to the cap body 10, a waterproof gasket 70 that directly seals the space between the lid body 20 and the container body 2, and a lid locking mechanism 40. The cap unit 3 and the container body 2 are arranged coaxially with each other about a central axis C.

[0020] In this embodiment, the direction in which the central axis C extends is referred to as the vertical direction. Within the vertical direction, the direction from the bottom surface 2a of the container body 2 to the lid top wall 20a of the lid body 20 is referred to as the upper side, and the direction from the lid top wall 20a to the bottom surface 2a is referred to as the lower side. The direction perpendicular to the central axis C is called the radial direction. Within the radial direction, the direction approaching the central axis C is called the radially inner direction or simply the inner direction, and the direction away from the central axis C is called the radially outer direction or simply the outer direction. The direction going around the central axis C is called the circumferential direction.

[0021] Additionally, among the radial directions, the direction passing through the first hinge 30 and the central axis C is referred to as the front-rear direction. Within the front-rear direction, the direction from the first hinge 30 toward the central axis C is referred to as the front side, and the direction from the central axis C toward the first hinge 30 is referred to as the rear side. In addition, the radial direction perpendicular to the front-rear direction is referred to as the left-right direction. When the beverage container 1 is in an upright position with the lid top wall 20a of the lid body 20 facing vertically upward as shown in Figure 2, the direction to the left in the left-right direction is referred to as the left side, and the direction to the right is referred to as the right side.

[0022] The central axis C may 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. For convenience of explanation, the radial direction, circumferential direction, and other directions may be defined based on the central axis of a component other than the central axis C.

[0023] As shown in Figure 2, beverage container 1 has a container body 2 with a vacuum insulation structure, which can keep a beverage (liquid content, liquid) contained in this container body 2 hot or cold. Container body 2 is cylindrical with an open top and a closed bottom. Note that container body 2 may also contain contents other than beverages.

[0024] The container body 2 is made of a metal such as stainless steel. Specifically, the container body 2 has a cylindrical outer container 4 and an inner container 5 with a bottom, and is configured as a double-structure container in which the mouths of the outer container 4 and the inner container 5 are joined together while the inner container 5 is housed inside the outer container 4.

[0025] 3, the upper cylindrical end portion of the inner container 5 is fitted into the upper cylindrical end portion of the outer container 4, and the upper cylindrical end portions are welded together in this fitted state. As a result, the upper opening 2d of the container body 2 has a pointed shape known as a "bow-welded structure."

[0026] A vacuum insulation layer 6 is provided between the outer container 4 and the inner container 5. The vacuum insulation layer 6 can be formed, for example, by blocking a vent hole provided in the center of the bottom surface of the outer container 4 in a chamber that has been depressurized (evacuated) to a high vacuum.

[0027] As shown in Figures 1 and 2, the container body 2 has a substantially disk-shaped bottom surface 2a, a substantially cylindrical body 2b whose lower end is connected to the outer periphery of the bottom surface 2a, a substantially cylindrical mouth / neck 2c that is located above the body 2b and has a smaller diameter than the body 2b, and a shoulder 2e that is substantially tapered and whose diameter decreases as it extends upward, connecting the upper end of the body 2b to the lower end of the mouth / neck 2c.

[0028] As shown in FIG. 3, the inner periphery of the mouth-neck portion 2c has a smaller diameter than the inner periphery of the body portion 2b. The mouth-neck portion 2c has an overhanging portion 8. The overhanging portion 8 is arranged on the inner periphery of the mouth-neck portion 2c. The overhanging portion 8 protrudes radially inward from the inner periphery of the mouth-neck portion 2c and extends around the entire circumferential direction. The overhanging portion 8 is annular about the central axis C and protrudes most inward in the mouth-neck portion 2c. In other words, the overhanging portion 8 protrudes toward the inside of the container body 2.

[0029] Furthermore, a male thread 7 is provided on the outer periphery of the mouth-neck portion 2c. The upper end of the mouth-neck portion 2c opens in a circular shape as the upper opening 2d of the container body 2. The diameter of the upper opening 2d of the container body 2 is, for example, 50 mm or less.

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

[0031] 3, the cap body 10 is attached to the upper opening 2d of the container body 2, and has a liquid passage 12 that connects the inside and outside of the container body 2. The cap body 10 is made of a heat-resistant resin such as polypropylene (PP).

[0032] 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 member. The top wall portion 10a covers the upper opening 2d of the container body 2 from above. The top wall portion 10a is a substantially annular plate. The top wall portion 10a has a packing accommodating groove 10c. The packing accommodating groove 10c is recessed upward from the lower surface of the top wall portion 10a and extends in the circumferential direction. The packing accommodating groove 10c is an annular groove centered on the central axis C and opens downward.

[0033] The peripheral wall portion 10b is cylindrical and extends downward from the outer periphery of the top wall portion 10a. The peripheral wall portion 10b surrounds the opening / neck portion 2c from the radially outer side along the entire circumferential direction. The lower end of the peripheral wall portion 10b faces or contacts the shoulder portion 2e from above with a gap therebetween. The peripheral wall portion 10b is generally cylindrical and extends vertically so as to be continuous with the barrel portion 2b of the container body 2.

[0034] The peripheral wall 10b has an internal thread 15 on its inner peripheral surface. The internal thread 15 is threadedly engaged with the external thread 7 of the neck portion 2c. That is, the cap body 10 is detachably attached to the outside of the neck portion 2c by threading, while covering the upper opening 2d of the container body 2.

[0035] The drinking spout 11 is a curved wall or a generally cylindrical shape centered on a central axis C. In this embodiment, the drinking spout 11 is generally C-shaped and opens to the rear when viewed from above the cap body 10 (see FIG. 7). The drinking spout 11 extends upward from the inner periphery of the top wall 10a.

[0036] As shown in Figure 3, the inner diameter of the spout 11 is approximately constant along the vertical direction. The outer diameter of the spout 11 is approximately constant along the vertical direction except for the bottom end of the spout 11, and at the bottom end, the outer diameter increases toward the bottom. In other words, the thickness of the spout 11 increases toward the bottom. In other words, the thickness of the spout 11 decreases toward the top. This ensures the rigidity of the spout 11 while making it easier to drink beverages.

[0037] The spout 11 is positioned above the upper opening 2d and has a liquid passage 12 formed inside. The spout 11 is located directly above the upper opening 2d, meaning that it overlaps with the upper opening 2d when viewed from the top-bottom direction. More specifically, when viewed from the top-bottom direction, at least the lower end of the spout 11 and the upper opening 2d overlap. The spout 11 extends vertically so as to be continuous with the upper opening 2d.

[0038] As shown in Figure 5, the vertical dimension (height dimension) of the spout 11 decreases from the front end of the spout 11 toward the rear. Specifically, the height dimension of the spout 11 projecting upward from the top wall 10a decreases from the front end of the spout 11 toward the rear. In other words, the upper edge of the spout 11 slopes downward from the front end toward the rear. Specifically, in this embodiment, the front portion of the upper edge of the spout 11 forms a convex curve, while the left and right portions each form a concave curve that smoothly merges into the front portion.

[0039] As shown in FIG. 3, the opening gasket 60 is annular about a central axis C. In this embodiment, the opening gasket 60 is in the form of a circular ring plate. Specifically, the cross section (longitudinal cross section) of the opening gasket 60 taken along the central axis C is rectangular in shape, with the radial dimension being longer than the vertical dimension. The opening gasket 60 is made of an elastically deformable material such as silicone rubber or elastomer.

[0040] The opening gasket 60 is placed in the gasket accommodating 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 gap between the upper opening 2d of the container body 2 and the top wall portion 10a of the cap body 10.

[0041] In this embodiment, the opening gasket 60 is fixed to the cap body 10. Specifically, the opening gasket 60 may be formed integrally with the cap body 10 by two-color molding, or may be formed separately from the cap body 10 and then bonded to the cap body 10 with an adhesive or the like.

[0042] The lid body 20 covers the drinking spout 11 and the liquid passage 12 of the cap body 10 from above. The lid body 20 is a member that covers the drinking spout 11 and the liquid passage 12 in an openable and closable manner. The lid body 20 has a portion (for example, a portion other than the valve packing 82 described below) made of a heat-resistant resin such as polypropylene (PP).

[0043] As shown in Figures 1 and 3, the lid body 20 has a lid peripheral wall portion 20b formed in an approximately cylindrical shape so as to be continuous with the peripheral wall portion 10b of the cap body 10, a lid top wall portion 20a connected to the upper end of the lid peripheral wall portion 20b, a stopper portion 21 protruding downward from the lid top wall portion 20a, an inner lid 81 attached to the stopper portion 21, and a valve gasket 82 attached to the inner lid 81.

[0044] As shown in Figure 3, stopper 21 is inserted into upper opening 2d through the inside of spout 11. That is, stopper 21 extends vertically and is disposed across spout 11 (liquid passage hole 12) and upper opening 2d.

[0045] The stopper portion 21 has a bottomed, cylindrical stopper tube 22 that hangs down from the lid top wall portion 20a, a female screw 23 that is provided on the inner surface of the peripheral wall of the stopper tube 22, and an air vent 25 that penetrates the bottom wall 26 of the stopper tube 22 in the vertical direction.

[0046] The stopper cylinder 22 is cylindrical with a bottom and extends in the vertical direction, centered on the central axis C. The stopper cylinder 22 is disposed inside the drinking spout 11 and inside the mouth / neck portion 2c. The bottom wall 26 of the plug barrel 22 has a large diameter wall portion 26 a, a small diameter wall portion 26 b, a connecting wall portion 26 c, and a packing mounting flange 24 .

[0047] The large diameter wall portion 26a is in the shape of 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 barrel 22. The small diameter wall portion 26b is in the shape of an annular plate centered on the central axis C, has a smaller diameter than the large diameter wall portion 26a, and is disposed below the large diameter wall portion 26a.

[0048] The connecting wall portion 26c is cylindrical and centered on the central axis C, and connects 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.

[0049] The packing mounting flange 24 protrudes radially outward from the connection between the small diameter wall portion 26b and the connecting wall portion 26c and extends around the entire circumferential direction. The packing mounting flange 24 is in the shape of an annular plate centered on the central axis C. The packing mounting flange 24 is disposed radially inward of the protruding portion 8 and faces the protruding portion 8 in the radial direction.

[0050] The ventilation hole 25 passes through the small diameter wall portion 26b in the vertical direction. The ventilation hole 25 is a circular hole centered on the central axis C. The ventilation hole 25 communicates between the inside and outside of the container body 2. Specifically, the ventilation hole 25 communicates between the inside of the container body 2 and the inside of the stopper portion 21.

[0051] The inner lid 81 is detachably attached to the inside of the stopper part 21. The inner lid 81 is housed in the stopper cylinder 22. The inner lid 81 has an inner lid body 83 , a male screw 84 , a packing mounting cylinder 85 , and an operating portion 86 .

[0052] 8, the inner lid body 83 has a cylindrical shape with a bottom and is centered on a central axis C. The inner lid body 83 is disposed inside the plug barrel 22.

[0053] 3, the male thread 84 is provided on the outer peripheral surface of the inner lid main body 83. The male thread 84 is threadedly engaged with the female thread 23. By threading the male thread 84 and the female thread 23 together, the inner lid 81 is removably fastened to the plug portion 21 with the screws. In this embodiment, the pair of male thread 84 and female thread 23 that thread together may be simply referred to as a "screw." The screw is tightened by turning inner lid 81 in one circumferential direction relative to plug barrel 22, and loosened by turning it in the other circumferential direction. In this embodiment, the one circumferential direction, i.e., the screw tightening side, is the clockwise direction when viewed from above the cap when looking at cap unit 3 from above, and the other circumferential direction, i.e., the screw loosening side, is the counterclockwise direction when viewed from above the cap.

[0054] The packing mounting cylinder 85 is cylindrical and has a center on the central axis C, and extends in the vertical direction. The packing mounting cylinder 85 is provided to protrude downward from the lower surface of the bottom wall of the inner lid main body 83. In this embodiment, the outer diameter dimension of the packing mounting cylinder 85 is smaller than the outer diameter dimension of the inner lid main body 83.

[0055] The operating portion 86 is a portion that is grasped and operated by the user when rotating the inner lid 81 around the central axis C to tighten or loosen the screw. 6 and 8, the operating part 86 is in the form of a plate extending in the radial direction. Specifically, the operating part 86 is in the form of a rectangular plate extending in the radial direction and the vertical direction, and both radial ends thereof are connected to the inner circumferential surface of the peripheral wall of the inner lid main body 83. The lower end of the operating part 86 is connected to the upper surface of the bottom wall of the inner lid main body 83. The user can grasp the operating part 86 with their fingers and rotate the inner lid 81 to one side in the circumferential direction or the other side in the circumferential direction.

[0056] 3 and 8, the valve packing 82 is substantially cylindrical with a bottom and centered on the central axis C. The valve packing 82 is made of an elastically deformable material such as silicone rubber or elastomer. The valve packing 82 is detachably attached to the lower end of the inner lid 81. The valve packing 82 is housed in the stopper cylinder 22. The valve packing 82 closes the vent hole 25 so as to be able to open and close freely.

[0057] As shown in FIG. 8, the valve packing 82 has a fitting cylindrical portion 82a, a dome portion 82b, and a flange portion 82c. The fitting cylindrical portion 82a is cylindrical and has a center on a central axis C, and extends in the vertical direction. The fitting cylindrical portion 82a is fitted into the packing mounting cylinder 85.

[0058] The dome portion 82b has a dome shape that bulges downward. The outer periphery of the dome portion 82b is connected to the lower end of the fitting cylindrical portion 82a. As shown in FIG. 3, when the male thread 84 and the female thread 23 are screwed together and the threads are tightened, the dome portion 82b closes the air vent 25 from above. As shown in FIG. 8, when the threads are loosened, the dome portion 82b is positioned above and spaced apart from the air vent 25, opening the air vent 25.

[0059] The flange portion 82c protrudes radially outward from the outer peripheral surface of the fitting cylindrical portion 82a and extends circumferentially. The flange portion 82c is in the shape of an annular plate centered on the central axis C. The outer peripheral portion of the flange portion 82c protrudes radially outward beyond the packing mounting cylinder 85. The upper surface of the flange portion 82c contacts the lower end surface of the packing mounting cylinder 85.

[0060] By providing the flange portion 82c on the valve packing 82, when attaching the valve packing 82 to the packing mounting cylinder 85, the fitting cylindrical portion 82a can be easily pushed into the packing mounting cylinder 85, and the valve packing 82 can be accurately positioned in the vertical direction. In addition, when removing the valve packing 82 from the packing mounting cylinder 85, the flange portion 82c can be used as a gripping point, making it easy to remove the valve packing 82.

[0061] 3 and 8, the pressure release mechanism 80 blocks communication between the inside and outside of the container body 2. Specifically, the pressure release mechanism 80 blocks communication between the air vent 25 and, when the internal pressure of the container body 2 changes (decreases or increases), for example, opens the air vent 25 to release the pressure in the container body 2. The pressure release mechanism 80 includes the plug 21, the air vent 25, the valve packing 82, the inner lid 81, and screws (the male thread 84 and the female thread 23) described above. That is, in this embodiment, the pressure release mechanism 80 is provided in the lid 20.

[0062] In this embodiment, a heat insulating structure using an air layer or a heat insulating material (not shown) is provided throughout the interior of the packing mounting cylinder 85 and the interior of the valve packing 82. That is, the lid 20 (pressure release mechanism 80) has a heat insulating structure using an air layer or a heat insulating material.

[0063] Although not specifically shown, in this embodiment, the lid body 20 has a screw lock mechanism that maintains the male screw 84 and the female screw 23 in a screw-engaged state (a tightened state of the screws). The screw lock mechanism has a screw locking portion provided on the inner circumferential surface of the stopper tube 22 and a screw-locked portion provided on the outer circumferential surface of the inner lid body 83, to which the screw locking portion is releasably locked. The screw lock mechanism locks the screws in a screw-engaged state of the male screw 84 and the female screw 23, preventing the screws from unintentionally loosening. The screw lock mechanism can be unlocked, for example, by the user pressing the inner lid 81 downward and rotating it to the other circumferential side (the side toward which the screws loosen).

[0064] As shown in Figure 3, the first hinge 30 is disposed at the rear of the cap unit 3. The first hinge 30 connects the upper rear end of the cap body 10 and the rear end of the lid body 20 so as to be rotatable relative to each other about a 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 positioned at a skew relative to each other.

[0065] The lid body 20 is connected to the cap body 10 via the first hinge 30, and is thereby rotatable about the hinge central axis A between a closed state (closed position) shown in Figures 3 and 6 and an open state (open position) shown in Figures 5 and 7. The closed position of the lid body 20 shown in Figures 3 and 6 is a position where the lid body 20 closes the opening (neck portion 2c) and the liquid passage 12 of the container body 2, and the open position of the lid body 20 shown in Figures 5 and 7 is a position where the lid body 20 opens the opening and the liquid passage 12 of the container body 2. Note that Figure 4 shows an intermediate state of the lid body 20 in transition between the closed state and the open state.

[0066] Although not specifically shown, the first hinge 30 has a torsion coil spring (biasing portion) that extends spirally around the hinge central axis A. The torsion coil spring biases the lid body 20 in the opening direction around the hinge central axis A relative to the cap body 10. In other words, a biasing force in the opening direction is applied to the lid body 20. Therefore, when the locked state by the lid locking mechanism 40 is released, the lid body 20 rotates from the closed position to the open position.

[0067] 3, the waterproof gasket 70 is detachably attached to the lower end of the plug portion 21. The waterproof gasket 70 is an annular sealing member made of, for example, silicone rubber or elastomer, and is elastically deformable. The waterproof gasket 70 is fitted into the bottom wall 26 of the plug tube 22.

[0068] The waterproof gasket 70 has a gasket body 71 , an inner flange 72 , and an outer flange 73 . The packing body 71 is cylindrical with a bottom and centered on the central axis C. The upper surface of the bottom wall of the packing body 71 contacts or faces across a gap with the lower surface of the small diameter wall portion 26b and the lower surface of the packing mounting flange 24. The peripheral wall of the packing body 71 surrounds the packing mounting flange 24 from the radial outside over the entire circumferential direction.

[0069] The packing body 71 has a circular communicating hole 71a centered on the central axis C. The communicating hole 71a is disposed in the center of the bottom wall of the packing body 71. The communicating hole 71a is disposed so as to overlap with the vent hole 25 when viewed from the top-bottom direction. In this embodiment, the inner diameter of the communicating hole 71a is approximately the same as the inner diameter of the vent hole 25.

[0070] The inner flange 72 protrudes radially inward from the upper end of the peripheral wall of the packing body 71 and extends circumferentially. The inner flange 72 is in the shape of an annular plate centered on the central axis C. The inner flange 72 is fitted between the lower surface of the large diameter wall portion 26a and the upper surface of the packing mounting flange 24. Furthermore, the packing mounting flange 24 is sandwiched between the bottom wall of the packing body 71 and the inner flange 72 in the up-down direction.

[0071] The outer flange 73 protrudes radially outward from the upper end of the peripheral wall of the packing body 71 and extends circumferentially. The outer flange 73 is annular and centered on the central axis C. The outer flange 73 is in liquid-tight contact with the protruding portion 8. This allows the watertight packing 70 to seal the gap between the plug portion 21 and the protruding portion 8. In this embodiment, the term "waterstop gasket 70 that directly seals the gap between the lid 20 and the container body 2" refers to a configuration in which the waterstop gasket 70 is in direct contact with the lid 20 (plug portion 21) and the container body 2 (projection portion 8), thereby sealing the gap between them. More specifically, the waterstop gasket 70 is not in contact with the cap body 10 or its drinking spout 11, but passes through the inside of the drinking spout 11, thereby coming into direct contact with the projection portion 8 of the container body 2.

[0072] As shown in Figures 3 and 4, in a vertical cross-sectional view along the central axis C, the outer flange 73 has a straight portion (flange base) 73a extending radially outward from the peripheral wall of the packing body 71, and a curved portion 73b connected to the outer periphery of the straight portion 73a and curved in a manner that convex radially outward. 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 protruding portion 8.

[0073] The upper part of the curved portion 73b extends in a curved manner downward as it moves radially outward from the connection with the straight portion 73a. The lower part of the curved portion 73b extends in a curved manner downward as it moves radially inward from the connection with the upper part. The thickness of the curved portion 73b becomes thinner as it moves from the connection with the straight portion 73a to the tip (the inner peripheral end of the lower part). Therefore, the curved portion 73b is easily deformed while maintaining its rigidity, and is brought into close contact with the protruding portion 8.

[0074] 3, the lid locking mechanism 40 is disposed at the front of the cap unit 3. The lid locking mechanism 40 fixes the lid body 20 to the cap body 10 against the biasing force of the torsion coil spring (biasing portion) of the first hinge 30 when the lid body 20 is in a position where it closes the liquid passage port 12, i.e., when the lid body 20 is in the closed position.

[0075] Specifically, the lid locking mechanism 40 has a locking member 45 rotatably attached to the cap body 10 via a second hinge 44, and a ring stopper 46 rotatably attached to the cap body 10 via the second hinge 44. The hinge center axis (not shown) of the second hinge 44 is disposed outside the peripheral wall portion 10b of the cap body 10 and extends in the left-right direction.

[0076] The locking member 45 is rotatably supported by a second hinge 44 provided at the front end of the peripheral wall portion 10b of the cap body 10. 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.

[0077] A hook portion (engagement portion) 47 is provided at the tip end portion of the first extension portion 45a (the upper end portion of the locking member 45) and protrudes toward the rear. That is, the lid locking mechanism 40 has the hook portion 47, and the hook portion 47 is disposed at the front portion of the cap unit 3. The hook portion 47 is engaged with the lid body 20 or the cap main body 10, and in this embodiment, it is engaged with the lid body 20. An elastic member 48, such as a compression coil spring, is disposed between the second extension 45b and the peripheral wall 10b in a state compressed in the front-rear direction. The elastic member 48 biases the second extension 45b forward.

[0078] 1, the ring stopper 46 is a member that extends while being curved in a substantially arc shape, and both ends thereof are rotatably supported by the second hinge 44. This allows the ring stopper 46 to rotate in the up and down direction around the second hinge 44.

[0079] As shown in FIG. 3, the lid locking mechanism 40 has a lock receiving portion (engaged portion) 49 to which the hook portion 47 of the locking member 45 is engaged, and a stopper receiving portion 50 to which the ring stopper 46 is hooked.

[0080] The lock receiving portion 49 is a claw-like portion that protrudes forward from the front lower end of the lid peripheral wall portion 20b of the lid body 20. The upper surface of the lock receiving portion 49 comes into contact with the lower surface of the hook portion 47, so that the lock receiving portion 49 is engaged with the hook portion 47. In other words, the hook portion 47 is engaged with the lock receiving portion 49 that is arranged on the lid body 20.

[0081] The stopper receiving portion 50 has a shape that fits into the inner peripheral portion of the ring stopper 46, and consists of a curved wall portion that protrudes forward from a position that surrounds the periphery of the lock receiving portion 49 at the front end of the lid peripheral wall portion 20b.

[0082] In the lid lock mechanism 40, when the lid 20 closes the top of the cap body 10, the hook portion 47 of the locking member 45 is engaged with the lock receiving portion 49, thereby maintaining the lid 20 in a state in which it closes the top of the cap body 10. From this state, when a user presses the second extension portion 45b of the locking member 45 rearward against the biasing force of the elastic member 48, the locking member 45 rotates about the second hinge 44 and the first extension portion 45a is displaced forward, as shown in FIG. 4, thereby releasing the engagement of the hook portion 47 with the lock receiving portion 49. As a result, as shown in FIGS. 4 and 5, the lid 20 can be rotated in the open direction by the biasing force of the torsion coil spring in the first hinge 30.

[0083] 3, in the lid locking mechanism 40, when the lid 20 closes the top of the cap body 10, the ring stopper 46 is latched onto the stopper receiving portion 50, thereby preventing the lid 20 from rotating in the opening direction. This makes it possible for the lid locking mechanism 40 to prevent the lid 20 from opening due to unnecessary (unintentional) operation of the locking member 45, etc.

[0084] In this embodiment, the front of the spout 11 protrudes above the lid locking mechanism 40. Specifically, when the lid 20 is in the open position shown in FIG. 5, the front of the spout 11 protrudes above at least the locking member 45 of the lid locking mechanism 40. That is, the front of the spout 11 protrudes above the hook 47. More specifically, it is preferable that the front of the spout 11 protrudes above the upper end of the hook 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 or chin will come into contact with the locking member 45, and if it exceeds 30 mm, the height of the beverage container 1 will be too bulky. Furthermore, in this embodiment, when the lid 20 is in the closed position shown in FIG. 3, the front of the spout 11 protrudes above the ring stopper 46, which is hooked onto the stopper receiving portion 50 above the hook 47.

[0085] In addition, in this embodiment, the operation of the lid locking mechanism 40 (locking operation or unlocking operation) and the operation of the above-mentioned pressure release mechanism 80 (operation of rotating the inner lid 81 circumferentially) are independent of each other, and each operation is performed separately as needed.

[0086] According to the cap unit 3 and beverage container 1 of this embodiment described above, the cap body 10 has a drinking spout 11 that is connected to the upper side of the upper opening 2d of the container body 2. The drinking spout 11 forms a beverage flow path that continues from the upper opening 2d and has approximately the same diameter as the upper opening 2d, ensuring that the inner diameter (opening dimension) of the liquid passage 12 formed inside the drinking spout 11 is also large. Therefore, even with the cap unit 3 attached, the inside of the container body 2 can be easily seen when the lid 20 is open.

[0087] This allows the amount of beverage remaining in the container body 2 to be visually confirmed through the liquid passage 12, and when drinking, the user can easily see how much to tilt the container to make the beverage come out of the liquid passage 12, making it easier to time the drinking. In addition, the drinking spout 11 extends vertically to connect to the upper opening 2d, and there are no large steps or protrusions that would obstruct the flow of beverage in the part of the mouth-neck 2c above the overhang 8 or inside the drinking spout 11, making it easier for the user to drink the beverage. Furthermore, when refilling the container body 2 with a beverage, the beverage can be poured in through the large diameter liquid passage port 12 without removing the cap unit 3, which provides good operability.

[0088] Furthermore, components such as a spout-forming member and a spout-removal mechanism that are provided in conventional cap units are not required, and the number of parts can be reduced in this embodiment. Specifically, because the liquid passage port 12 of the drinking spout portion 11 has a large diameter, when the lid body 20 is closed, a part of the lid body 20 (the stopper portion 21) can close the opening (mouth-neck portion 2c) of the container body 2 through the inside of this liquid passage port 12. This makes it possible to eliminate components such as a spout-forming member and a spout-removal mechanism that were previously provided in the cap body 10, and therefore fewer parts need to be washed when the cap unit 3 is disassembled and cleaned. Furthermore, assembly and disassembly are not time-consuming, and problems such as losing disassembled parts are reduced.

[0089] In this embodiment, since the opening dimensions of the liquid passage 12 are sufficiently wide, it is also possible to open the lid body 20 and clean the inside of the container body 2 while the cap unit 3 is still attached to the neck portion 2c of the container body 2.

[0090] Furthermore, the front of the spout 11 protrudes above the hook (engagement) 47 of the lid locking mechanism 40; more specifically, when the lid 20 is in the open position, it protrudes at least above the locking member 45, so that when a user places their mouth (lips) over the spout 11 from the front to drink a beverage, the lower lip or chin is prevented from coming into contact with the locking member 45 (lid locking mechanism 40) and its hook 47. The user can drink a beverage smoothly from the front of the cap unit 3, which is less likely to cause discomfort during use and provides a comfortable feel.

[0091] Furthermore, because the drinking spout 11 is provided on the cap body 10, which is separate from the container body 2, it is easy to make the drinking spout 11 out of a material other than metal, such as a resin. This ensures a pleasant mouthfeel when the user places their mouth on the drinking spout 11. It also makes it difficult for the heat of a hot beverage to be transferred to the drinking spout 11, making it easier for the user to place their mouth on the drinking spout 11 and drink even a hot beverage.

[0092] As described 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 reduced, it is easy to refill the beverage through the liquid passage 12 and to visually check the timing when the beverage is coming out, the mouthpiece 11 feels good when the user puts it to their mouth, and it is easy to put the mouthpiece 11 to their mouth even when the beverage is hot, making it easy to use and drink the beverage.

[0093] In this embodiment, the waterproof gasket 70 seals the gap between the plug portion 21 of the lid 20 and the protruding portion 8 of the container body 2. In this case, when the lid body 20 is in the closed state, the waterproof packing 70 can stably seal the gap between the lid body 20 and the container body 2.

[0094] In addition, in this embodiment, the opening gasket 60 seals the gap between the cap body 10 and the upper opening 2d, so that even if the user tilts the container when drinking a beverage, the beverage is prevented from leaking out from between the cap body 10 and the container body 2. In this embodiment, the waterproof packing 70 and the opening packing 60 can seal the two locations of the protruding portion 8 and the upper opening 2d, making it possible to more reliably prevent the beverage from leaking out.

[0095] In this embodiment, a pressure release mechanism 80 is provided that blocks communication between the inside and outside of the container body 2. For example, after a hot beverage is poured into the container body 2, as time passes and the beverage cools, the pressure inside the container body 2 decreases, and the lid 20 is pulled toward the inside of the container body 2, causing the watertight gasket 70 to stick tightly to the protruding portion 8, making it difficult to open the lid 20. Even in such a case, the reduced pressure state of the container body 2 can be released by the pressure release mechanism 80 in this embodiment. That is, by rotating the inner lid 81 of the pressure release mechanism 80 toward the loosening screw side and pulling it up, the state in which the vent hole 25 is blocked by the valve gasket 82 is released, and air is drawn in through the vent hole 25, eliminating the pressure difference between the inside and outside of the container body 2 and making it easier to open the lid 20.

[0096] In this embodiment, the vertical dimension (height dimension) of the spout 11 decreases from the front end to the rear of the spout 11. In other words, the upper edge of the spout 11 slopes downward from the front end to the rear. In this case, the shape of spout 11 is designed to fit easily on the lips and not come into contact with the nose, etc., making it easier for the user to drink from the front side of spout 11. Furthermore, even though stopper 21 is provided hanging down from lid top wall 20a of lid 20, stopper 21 is unlikely to interfere with the rear of spout 11 when lid 20 is rotated around first hinge 30.

[0097] In this embodiment, the front portion of the upper edge of the spout 11 is convexly curved, and the left and right portions are each concavely curved and smoothly connect to the front portion. Therefore, when a user places their lips on the front side of the mouthpiece 11, their lips easily fit the shape of the upper edge of the mouthpiece 11, making it easier to drink the beverage.

[0098] In this embodiment, as described above, the watertight gasket 70 is configured to seal the gap between the plug portion 21 of the lid 20 and the protruding portion 8 of the container body 2, and the watertight gasket 70 does not come into contact with the drinking spout 11, which allows for greater freedom in the shape of the drinking spout 11. Therefore, as in this embodiment, by ensuring a large inner diameter for the drinking spout 11 and eliminating any steps on the inner circumferential surface along the vertical direction, it is possible to improve visibility inside the container and the ease of flow of the beverage, and by giving the upper edge of the drinking spout 11 a rounded shape, it is possible to further improve the mouthfeel.

[0099] In this embodiment, the opening packing 60 is fixed to the cap body 10 . In this case, since the cap body 10 and the opening gasket 60 are integrated, the opening gasket 60 can be washed together with the cap body 10, making it easy to handle. In addition, loss of the opening gasket 60 can be prevented.

[0100] In this embodiment, a pressure release mechanism 80 is provided in the cover 20 . In this case, it is easy for the user to operate the pressure release mechanism 80.

[0101] In this embodiment, the pressure release mechanism 80 and the lid lock mechanism 40 are operated separately. In this case, it is possible to release the pressure in the container body 2 only when an operation to release the pressure is necessary. Furthermore, the structures of the pressure release mechanism 80 and the lid lock mechanism 40 can each be simplified.

[0102] In this embodiment, the cover 20 (pressure release mechanism 80) has a heat insulating structure using an air layer or a heat insulating material. In this case, the temperature of the hot beverage in the container body 2 can be prevented from decreasing or the temperature of the cold beverage can be prevented from increasing through the lid 20 or the pressure release mechanism 80, thereby maintaining the beverage at an appropriate temperature.

[0103] In this embodiment, the stopper portion 21 is disposed inside the drinking spout portion 11. In this embodiment, because the spout 11 protrudes upward from the top wall 10a, it is easy to ensure a large vertical dimension for the stopper 21 placed inside the spout 11. This makes it easy to ensure space in the stopper 21 for the pressure release mechanism 80 and heat insulation structure.

[0104] In this embodiment, the diameter of the upper opening 2d of the container body 2 is 50 mm or less. In this case, when a hot beverage is poured into the container body 2 and the inside becomes positive pressure (positive pressure), even if the lid body 20 is in the open state, the opening sound (popping sound) caused by the internal pressure of the container being released can be kept small.

[0105] The present invention is not limited to the first embodiment described above, and the configuration can be changed within the scope of the present invention, as will be explained below.

[0106] In the first embodiment described above, an example was given in which the opening packing 60 was fixed integrally to the cap body 10, but the present invention is not limited to this. FIG. 9 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, an opening gasket 61 is provided separately from the cap body 10 and is detachably attached to the cap body 10. The opening gasket 61 is annular about the central axis C and is made of an elastically deformable material such as silicone rubber or elastomer. The opening gasket 61 is placed in the gasket receiving groove 10c. In FIG. 9, the opening gasket 61 is shown by a two-dot chain line (phantom line) to represent the shape before elastic deformation.

[0107] The opening gasket 61 has a seal flange 61a and a flange connecting tube 61b. A pair of seal flanges 61a are provided with a gap between them in the vertical direction. Each seal flange 61a is in the shape of an annular plate. The flange connecting tube 61b is cylindrical and connects the inner peripheries of the pair of seal flanges 61a to each other. Specifically, the upper end of the flange connecting tube 61b is connected to the inner periphery of the upper seal flange 61a, and the lower end of the flange connecting tube 61b is connected to the inner periphery of the lower seal flange 61a. According to this modification, the opening packing 61 can be easily elastically deformed, and the sealing performance of the opening packing 61 can be improved more stably.

[0108] In the first embodiment described above, an example was given in which the locking member 45 of the lid locking mechanism 40 is configured to be rotatable about the second hinge 44, but this is not limited to this. Although not specifically shown, the locking member may be configured to be slidable in the front-to-rear direction. In this case as well, pressing the locking member rearward releases the locked state of the lid 20 by the lid locking mechanism.

[0109] Second Embodiment Next, a cap unit 103 and a beverage container 101 equipped with the same according to a second embodiment of the present invention will be described with reference to Figures 10 to 15. In this embodiment, the same components as those in the previous embodiment may be given the same names and symbols, and their description may be omitted. Furthermore, the definitions of directions are the same as those in the previous embodiment unless otherwise specified.

[0110] 10 and 11, a beverage container 101 of this embodiment includes a cap unit 103 and a container body 2 to which the cap unit 103 is attached. The cap unit 103 and the container body 2 are arranged coaxially with each other about a central axis C.

[0111] The cap unit 103 is detachably attached to the container body 2, which has an open top. The cap unit 103 includes a cap body 10, an opening gasket 110, a lid body 20, a pressure release mechanism 130, a first hinge 30, a waterproof gasket 70, and a lid lock mechanism 140.

[0112] The cap unit 103 of this embodiment differs from the cap unit 3 described in the previous embodiment in the configuration of the drinking spout 11, opening gasket 110, lid body 20, pressure release mechanism 130, and lid locking mechanism 140.

[0113] As shown in Figure 15, in this embodiment, the drinking spout 11 is in the shape of a circular ring centered on the central axis C. As shown in Figure 11, the inner diameter of the drinking spout 11 is approximately constant along the vertical direction, and more specifically, it becomes slightly smaller toward the bottom. The outer diameter of the drinking spout 11 also becomes larger toward the bottom. In other words, the thickness of the drinking spout 11 becomes thicker toward the bottom and thinner toward the top. This ensures the rigidity of the drinking spout 11 while making it easier to drink beverages. Furthermore, when viewed from the top-bottom direction, at least the lower end of the drinking spout 11 and the upper opening 2d are arranged to overlap each other.

[0114] The opening gasket 110 is elastically deformable and seals the gap between the cap body 10 and the upper opening 2d. The opening gasket 110 of this embodiment is detachable from the container body 2 and the cap body 10. However, this is not limiting, and the opening gasket 110 may be fixed to the cap body 10 by adhesion or the like so that it cannot be removed.

[0115] The opening gasket 110 is disposed above the protruding portion 8 and below the drinking spout portion 11. As shown in FIG. 11 , the opening gasket 110 has a generally U-shape that opens downward in a cross section (longitudinal cross section) along the central axis C. The opening gasket 110 has an inner tubular portion 111, an outer tubular portion 112, and a connecting portion 113.

[0116] The inner tube portion 111 is cylindrical and has a center on the central axis C, and extends in the vertical direction. The inner tube portion 111 fits inside the upper end portion (upper opening 2d) of the mouth / neck portion 2c. The inner circumferential surface of the inner tube portion 111 is located radially outward from the inner circumferential end portion (innermost end portion) of the protruding portion 8. The inner circumferential surface of the inner tube portion 111 is also substantially flush with the inner circumferential surface of the drinking spout portion 11, i.e., the liquid passage port 12, or is located slightly radially inward from the liquid passage port 12.

[0117] The provision of the inner tube portion 111 prevents the formation of large steps or protrusions that would obstruct the flow of beverage from the overhanging portion 8 toward the liquid passage port 12. This allows the beverage to flow more smoothly, making it easier for the user to drink. In addition, the formation of a depression that could trap beverage between the overhanging portion 8 and the drinking spout 11 is prevented, thereby preventing liquid from remaining in that area.

[0118] The outer cylinder 112 is cylindrical and has a center on the central axis C, and extends in the vertical direction. The outer cylinder 112 fits onto the outside of the upper end (upper opening 2d) of the mouth / neck portion 2c. The outer peripheral surface of the outer cylinder 112 contacts the upper end of the inner peripheral surface of the peripheral wall portion 10b, or faces it with a gap therebetween.

[0119] The connecting portion 113 is in the shape of an annular plate centered on the central axis C and extends in a direction perpendicular to the central axis C. The connecting portion 113 is disposed in the packing accommodating groove 10c. The inner peripheral portion of the connecting portion 113 is connected to the upper end portion of the inner cylindrical portion 111. The outer peripheral portion of the connecting portion 113 is connected to the upper end portion of the outer cylindrical portion 112.

[0120] The lid body 20 is connected to the cap body 10 via the first hinge 30, and is therefore freely rotatable around the hinge center axis A between the closed state (blocked position) shown in Figures 10 and 11 and the open state (open state) shown in Figures 14 and 15. 12 and 13 are diagrams illustrating the operational steps for transitioning the lid 20 from a closed state to an open state. Specifically, Fig. 12 shows a state in which the inside and outside of the container body 2 are connected by the pressure release mechanism 130 of this embodiment (i.e., a state in which the pressure inside the container body 2 is released), and Fig. 13 shows a state in which the fixation (lock) of the lid 20 by the lid lock mechanism 140 of this embodiment is released.

[0121] As shown in Figure 11, the lid body 20 has a guide recess 27 recessed downward from the upper surface of the lid top wall portion 20a, a guide hole 28 arranged inside the guide recess 27 and penetrating the lid top wall portion 20a in the vertical direction, an inner wall portion 20c hanging down from the lid top wall portion 20a, a support tube 141 attached to the inner wall portion 20c, a pushing member 142 arranged penetrating the bottom wall of the support tube 141 in the vertical direction, a stopper portion 121 arranged below the support tube 141 and supported by the pushing member 142, a valve gasket 131 sealing between the pushing member 142 and the stopper portion 121, a notch portion 20d arranged at the front end of the lid peripheral wall portion 20b, an attachment recess 29 arranged in the lid peripheral wall portion 20b, and an anti-slip member 31 that fits into the attachment recess 29.

[0122] In this embodiment, the guide recess 27 is a groove extending in the front-rear direction and is disposed approximately in the center of the lid top wall portion 20a. The guide hole 28 is a circular hole and is disposed in the center of the guide recess 27 in the front-rear direction.

[0123] The inner wall 20c is a wall that extends downward from the lower surface of the lid top wall 20a and is generally C-shaped when viewed from below. The inner wall 20c is disposed outside the guide hole 28 and extends in a curved manner to surround the guide hole 28 (see FIG. 15).

[0124] The support tube 141 is a generally cylindrical shape with a bottom that opens upward. The support tube 141 is positioned below the lid top wall portion 20a and fits within the inner wall portion 20c. The support tube 141 is immovably fixed to the inner wall portion 20c by undercut fitting or the like. The inner diameter of the support tube 141 is larger than the inner diameter of the guide hole 28. The support tube 141 is positioned inside the drinking spout portion 11.

[0125] The support cylinder 141 has a guide cylinder 141a, an insertion hole 141b, a lower restricting pin 141c, and an upper protruding pin 141d.

[0126] The guide tube 141a protrudes upward from the bottom wall of the support tube 141. The guide tube 141a has a cylindrical shape that extends in the vertical direction.

[0127] The insertion hole 141b is disposed inside the guide tube 141a and forms an internal space of the guide tube 141a. The insertion hole 141b is a circular hole extending in the vertical direction, and penetrates the bottom wall of the support tube 141 in the vertical direction. That is, the insertion hole 141b opens at the upper end surface of the guide tube 141a and at the lower surface of the bottom wall of the support tube 141. In this embodiment, the central axis C passes through the inside of the insertion hole 141b. That is, the insertion hole 141b is located on the central axis C.

[0128] The lower regulating pin 141c protrudes upward from the bottom wall of the support tube 141. The lower regulating pin 141c is columnar and extends in the vertical direction, and in this embodiment is prismatic. The lower regulating pin 141c is positioned forward of the guide tube 141a. The amount by which the lower regulating pin 141c protrudes upward from the bottom wall of the support tube 141 is greater than the amount by which the guide tube 141a protrudes upward from the bottom wall of the support tube 141. The upper end surface of the lower regulating pin 141c is located above the upper end surface of the guide tube 141a.

[0129] The upper protruding pin 141d protrudes upward from the front end of the bottom wall of the support tube 141. The upper protruding pin 141d is cylindrical or columnar and extends in the vertical direction. The upper protruding pin 141d is positioned forward of the guide tube 141a and the lower restriction pin 141c.

[0130] The pushing member 142 is disposed below the lid top wall portion 20a. The pushing member 142 is located directly below the guide hole 28. The pushing member 142 has a substantially disk-shaped pushing body 150 that extends in a direction perpendicular to the central axis C, and a columnar valve stem 151 that extends vertically downward from the pushing body 150.

[0131] The pushing body 150 is disposed above the guide tube 141a. The pushing body 150 has a flange (not shown) that protrudes radially outward from the outer peripheral surface of the pushing body 150 and extends in the circumferential direction. The outer diameter of the flange is larger than the inner diameter of the guide hole 28. The flange contacts the lower surface of the lid top wall portion 20a, in the area surrounding the guide hole 28, from below. This restricts the pushing body 150 (pushing member 142) from moving above the guide hole 28.

[0132] Although not shown, the pusher body 150 has a guide slit extending in the vertical direction, cut out by a portion of the flange. A guide rib (not shown) protruding radially inward from the inner circumferential surface of the inner wall portion 20c and extending in the vertical direction engages with the guide slit. This engagement restricts the circumferential rotation and radial movement (e.g., front-to-back or left-to-right directions) of the pusher body 150 (pushing member 142). Furthermore, the guide slit slides vertically relative to the guide rib, allowing the pusher body 150 (pushing member 142) to move freely in the vertical direction. The pusher member 142 is biased upward by a pusher biasing member 148 (described later), which holds the flange pressed against the underside of the lid top wall portion 20a.

[0133] The pushing body 150 also has a guide recess 150a. The guide recess 150a is generally slit-shaped, penetrating the pushing body 150 in the up-down direction and extending in the front-to-rear direction. The guide recess 150a opens at the front end of the upper surface, lower surface, and outer circumferential surface of the pushing body 150. The rear end of the guide recess 150a is recessed toward the rear.

[0134] The valve stem 151 protrudes downward from the underside of the push-in body 150. The valve stem 151 is inserted into the insertion hole 141b. The valve stem 151 extends in the vertical direction from the upper side of the guide tube 141a to the lower side of the bottom wall of the support tube 141. In other words, the valve stem 151 has a portion that protrudes downward beyond the bottom wall of the support tube 141. The valve stem 151 is guided by the guide tube 141a and the insertion hole 141b so as to be slidable in the vertical direction.

[0135] In this embodiment, the valve stem 151 is located on the central axis C. More specifically, the central axis (not shown) of the valve stem 151 is arranged close to the central axis C, and is located slightly rearward of the central axis C. However, this is not limiting, and the central axis of the valve stem 151 and the central axis C may be arranged coaxially with each other.

[0136] The valve stem 151 has a valve packing support portion 151a and a pushing surface 151b. The valve packing support portion 151a and the pushing surface 151b are arranged on a portion of the valve stem 151 that protrudes downward from the bottom wall of the support cylinder 141.

[0137] The valve packing support portion 151a is disposed at the lower end of the valve stem 151. The valve packing support portion 151a is flange-shaped and protrudes outward in the radial direction perpendicular to the central axis of the valve stem 151 from the lower end of the outer circumferential surface of the valve stem 151. The upper surface of the valve packing support portion 151a is flat and extends in the direction perpendicular to the central axis of the valve stem 151. At least the outer circumferential portion of the lower surface of the valve packing support portion 151a is tapered and extends upward as it moves outward in the radial direction perpendicular to the central axis of the valve stem 151.

[0138] The pushing surface 151b is disposed on a portion of the outer circumferential surface of the valve stem 151 that is located above the valve packing support portion 151a. The pushing surface 151b faces at least downward, and in this embodiment, is tapered. The pushing surface 151b is an annular surface centered on the central axis of the valve stem 151, and extends upward as it extends radially outward, perpendicular to the central axis of the valve stem 151.

[0139] The stopper part 121 is inserted into the upper opening 2d through the inside of the drinking spout part 11. The stopper part 121 is disposed inside the neck part 2c. The stopper part 121 has a cylindrical body 122 and a packing mounting flange 123.

[0140] The cylinder 122 has a cylindrical shape with a bottom and extends in the vertical direction. The cylinder 122 has an air hole 125 that passes through the bottom wall of the cylinder 122 in the vertical direction, and a receiving surface 126 that is arranged around the air hole 125 on the bottom wall of the cylinder 122.

[0141] The vent hole 125 is a circular hole extending in the vertical direction. A valve stem 151 is inserted into the interior of the cylindrical body 122 and through the vent hole 125. A valve packing support portion 151a of the valve stem 151 is positioned below the bottom wall of the cylindrical body 122. A pushing surface 151b of the valve stem 151 is positioned above the bottom wall of the cylindrical body 122.

[0142] The receiving surface 126 is a surface that faces at least upward, and in this embodiment, is a tapered surface. The receiving surface 126 is an annular surface centered on the central axis of the cylindrical body 122, and extends upward as it moves outward in the radial direction perpendicular to the central axis of the cylindrical body 122. The receiving surface 126 faces the pressing surface 151b with a gap therebetween in the vertical direction.

[0143] The packing mounting flange 123 is a flange-like member that protrudes outward in a radial direction perpendicular to the central axis of the cylindrical body 122 from the lower end of the outer circumferential surface of the cylindrical body 122. The packing mounting flange 123 overlaps with the protruding portion 8 when viewed from the radial direction.

[0144] The valve packing 131 is made of an elastically deformable material such as silicone rubber or elastomer. The valve packing 131 is substantially cylindrical and extends in the vertical direction. The lower end of the valve stem 151 fits into the valve packing 131. The lower end surface of the valve packing 131 contacts the upper surface of the valve packing support portion 151a. The upper end surface of the valve packing 131 contacts the lower surface of the bottom wall of the cylindrical body 122 (i.e., the lower surface of the stopper portion 121). By providing the valve packing 131, communication between the inside and outside of the container body 2 through the air vent 125 is blocked. As the pushing member 142 moves downward, the valve packing 131 moves downward together with the pushing member 142, and the upper end surface of the valve packing 131 moves away from the lower surface of the stopper portion 121. In other words, the valve packing 131 releasably blocks the air vent 125.

[0145] As shown in Figures 10 and 11, the notch 20d is a notch provided in the front lower end of the lid peripheral wall 20b. The notch 20d penetrates the lid peripheral wall 20b in the front-to-rear direction. The notch 20d opens on the outer and inner peripheral surfaces of the lid peripheral wall 20b and also on the lower end surface of the lid peripheral wall 20b. When viewed from the front of the lid 20, the notch 20d has a generally U-shape that opens downward.

[0146] The mounting recess 29 is recessed radially inward from the outer peripheral surface of the lid peripheral wall portion 20b and has a groove shape that extends circumferentially. The mounting recess 29 is arranged on the outer peripheral surface of the lid peripheral wall portion 20b, extending in a substantially C-shape. Specifically, the mounting recess 29 is arranged on a portion of the outer peripheral surface of the lid peripheral wall portion 20b other than the rear end portion. The mounting recess 29 is arranged above the cutout portion 20d.

[0147] The anti-slip member 31 is made of an elastic material such as heat-resistant rubber or elastomer, for example, silicone rubber, and is generally C-shaped with a portion of the circumference open. The anti-slip member 31 is detachably attached to the mounting recess 29. Alternatively, the anti-slip member 31 may be permanently fixed to the mounting recess 29. When the anti-slip member 31 is attached to the mounting recess 29, the outer peripheral surface of the anti-slip member 31 is disposed substantially flush with the outer peripheral surface of the lid peripheral wall portion 20b so as to be continuous with it. The provision of the anti-slip member 31 makes it easier for the user to grip the lid body 20, facilitating the operation of the operation button 143, which will be described later.

[0148] Although not specifically shown, the anti-slip member 31 covers an end of the first hinge 30 (its metal shaft) and an end of the second hinge 144 (described later) (its metal shaft). Therefore, the anti-slip member 31 can protect the first hinge 30 and the second hinge 144 while improving the waterproof properties of the first hinge 30 and the second hinge 144. This can prevent the first hinge 30 and the second hinge 144 from being damaged or falling off, or from rusting.

[0149] The lid locking mechanism 140 is disposed across the front and center of the cap unit 103 in the front-to-rear direction. As shown in Fig. 11 , the lid locking mechanism 140 fixes the lid body 20 to the cap body 10 against the biasing force of the torsion coil spring (biasing portion) of the first hinge 30 when the lid body 20 is in a position where it closes the liquid passage port 12, i.e., when the lid body 20 is in the closed position. In other words, the lid locking mechanism 140 fixes the lid body 20 to the cap body 10 in the closed position.

[0150] The lid locking mechanism 140 has a locking member 145 rotatably attached to the lid 20 via a second hinge 144, the above-mentioned pushing member 142 that engages with the inner wall 20c and the support cylinder 141 so as to be vertically movable, an operation button 143 that is slidable in the front-to-rear direction relative to the pushing member 142, a lock biasing member 146, a pushing biasing member 148, and a slide biasing member 152. The hinge center axis (not shown) of the second hinge 144 is disposed inside the lid peripheral wall 20b of the lid 20, and extends in the left-to-right direction.

[0151] The locking member 145 is rotatably supported by a second hinge 144 provided at the front end portion within the lid peripheral wall portion 20b of the lid body 20. The locking member 145 has a first extension portion 145a extending downward from the second hinge 144, and a second extension portion 145b extending upward from the second hinge 144 and then extending rearward.

[0152] The lower end of the first extension 145a is disposed within the notch 20d and is exposed to the outside of the cap from the outer circumferential surface of the lid peripheral wall 20b. The surface (outer surface) of the lower end of the first extension 145a facing radially outward is disposed substantially flush with the outer circumferential surface of the lid peripheral wall 20b.

[0153] The first extension 145a other than its lower end and the second extension 145b are disposed inside the lid peripheral wall 20b. Due to this configuration, when the lid 20 is locked in the closed position by the lid locking mechanism 140 (closed state shown in FIG. 11), the locking member 145 does not protrude radially outward from the outer circumferential surface of the lid 20.

[0154] A hook portion (locking portion) 147 is provided at the tip end (lower end portion of locking member 145) of first extension portion 145a and protrudes rearward. That is, lid locking mechanism 140 has hook portion 147, which is disposed at the front of cap unit 103. Hook portion 147 is locked with lid body 20 or cap body 10, and in this embodiment, is locked with cap body 10.

[0155] The lid locking mechanism 140 also has a lock receiving portion (locked portion) 149 to which the hook portion 147 of the locking member 145 is locked. The lock receiving portion 149 is a claw-like portion that protrudes forward from the front upper end portion of the peripheral wall portion 10b of the cap body 10. The lower surface of the lock receiving portion 149 comes into contact with the upper surface of the hook portion 147, whereby the lock receiving portion 149 is locked to the hook portion 147. In other words, the hook portion 147 is locked to the lock receiving portion 149 that is arranged on the cap body 10.

[0156] In this embodiment, the front of the spout 11 protrudes above the hook 147. When the lid 20 is in the open position shown in Figure 14, the front of the spout 11 protrudes above the lock receiver 149 that engages with the hook 147.

[0157] As shown in FIG. 11, the second extension portion 145b has an outer portion 145ba that is curved and convex upward when viewed from the left-right direction, an inner portion 145bb that is arranged radially inward of the outer portion 145ba, and a lower protruding pin 145c.

[0158] The outer portion 145ba is positioned above the front of the spout 11. The outer portion 145ba extends in a curved manner so as to surround the front end of the upper edge of the spout 11 from the front, top, and rear. Therefore, in this embodiment, even while the locking member 145 is positioned inside the lid 20, the vertical bulk of the lid 20 is kept small, and the front of the spout 11 can protrude upwardly from the top wall 10a by a large amount.

[0159] The inner portion 145bb is connected to the radially inner end of the outer portion 145ba and extends in the front-rear direction. When viewed from the top-bottom direction, the inner portion 145bb overlaps with the front end of the bottom wall of the support cylinder 141. Furthermore, when viewed from the top-bottom direction, at least the radially inner end of the inner portion 145bb is disposed within the guide hole 28. In other words, the inner portion 145bb protrudes into the guide hole 28.

[0160] The lower protruding pin 145c protrudes downward from the inner portion 145bb. The lower protruding pin 145c has a columnar shape that extends in the vertical direction. The lower protruding pin 145c is disposed directly above the upper protruding pin 141d.

[0161] The operation button 143 is disposed on the upper part of the lid body 20. The operation button 143 is generally disk-shaped and extends in a direction perpendicular to the central axis C. The outer diameter of the operation button 143 is smaller than the inner diameter of the guide hole 28. As shown in FIGS. 11 to 13, the operation button 143 can be inserted vertically through the guide hole 28. That is, the operation button 143 can move between the upper and lower sides of the lid top wall portion 20a through the guide hole 28.

[0162] Also, as shown in FIG. 11, when the disc-shaped portion of the operation button 143 (the upper portion of the operation button 143, which may also be referred to as the operation main body portion) is positioned on the upper side of the lid top wall portion 20a, the operation button 143 can slide back and forth within the guide recess 27.

[0163] 11, the front end of the operation button 143 overlaps with the front end of the guide recess 27 when viewed from the top-bottom direction. When the operation button 143 is in the retracted end position shown in FIGS. 12 and 13, the operation button 143 is disposed (housed) in the guide hole 28 when viewed from the top-bottom direction.

[0164] As shown in FIG. 11, the operation button 143 has a guide protrusion 143a, an upper restriction pin 143b, and a rear protruding pin 143c.

[0165] The guide protrusion 143a protrudes downward from the disk-shaped portion (operation main body portion) of the operation button 143 and extends in the front-rear direction. The guide protrusion 143a engages with the guide recess 150a of the pusher member 142 so as to be slidable in the front-rear direction. This engagement allows the operation button 143 to slide in the front-rear direction relative to the pusher member 142. This engagement also restricts the operation button 143 from moving up and down and left and right relative to the pusher member 142.

[0166] The upper restriction pin 143b is disposed below the disk-shaped portion of the operation button 143. In this embodiment, the upper restriction pin 143b protrudes downward from the guide protrusion 143a. The upper restriction pin 143b has a columnar shape extending in the vertical direction, and in this embodiment, has a rectangular columnar shape.

[0167] 11, the lower end surface of the upper regulating pin 143b faces the upper end surface of the lower regulating pin 141c. Therefore, at the forward end position of the operation button 143, the contact between the upper regulating pin 143b and the lower regulating pin 141c restricts the downward movement of the operation button 143 and the push-in member 142.

[0168] 12 and 13, the upper restriction pin 143b is located rearward of the lower restriction pin 141c, and the lower end surface of the upper restriction pin 143b and the upper end surface of the lower restriction pin 141c do not face each other. Therefore, when the operation button 143 is in the retracted end position, the operation button 143 and the push-in member 142 are allowed to move downward.

[0169] 11, the rear protruding pin 143c is disposed below the disk-shaped portion of the operation button 143. In this embodiment, the rear protruding pin 143c protrudes rearward from the upper restriction pin 143b. The rear protruding pin 143c has a columnar shape extending in the front-rear direction.

[0170] The lock biasing member 146 is an elastically deformable member such as a compression coil spring. The lock biasing member 146 is disposed within the support tube 141 and extends in the vertical direction. An upper protruding pin 141d is inserted into the lower end of the lock biasing member 146. A lower protruding pin 145c is inserted into the upper end of the lock biasing member 146. The lower end of the lock biasing member 146 contacts the bottom wall of the support tube 141 from above. The upper end of the lock biasing member 146 contacts an inner portion 145bb of the second extension portion 145b from below. The lock biasing member 146 biases the locking member 145 toward one side around the second hinge 144 (in FIG. 11, this is the counterclockwise direction around the second hinge 144, which may also be referred to as the locking direction).

[0171] The pushing biasing member 148 is an elastically deformable member such as a compression coil spring. The pushing biasing member 148 is disposed within the support tube 141 and extends in the vertical direction. The valve stem 151 is inserted into the pushing biasing member 148. The guide tube 141a is inserted into the lower end of the pushing biasing member 148. The lower end of the pushing biasing member 148 contacts the bottom wall of the support tube 141 from above. The upper end of the pushing biasing member 148 contacts the lower surface of the pushing body 150 from below. The pushing biasing member 148 biases the pushing member 142 and the operation button 143 that engages with the pushing member 142 upward.

[0172] The slide biasing member 152 is an elastically deformable member such as a compression coil spring. The slide biasing member 152 is disposed within the guide recess 150a and extends in the front-to-rear direction. The rear protruding pin 143c is inserted into the front end of the slide biasing member 152. The front end of the slide biasing member 152 contacts the rear surface of the upper restriction pin 143b from the rear side. The rear end of the slide biasing member 152 contacts the surface of the guide recess 150a that is located at the rear end and faces forward from the front side. The slide biasing member 152 biases the operation button 143 toward the front side.

[0173] The pressure release mechanism 130 blocks communication between the inside and outside of the container body 2. More specifically, the pressure release mechanism 130 blocks communication through the vent hole 125, and when the internal pressure of the container body 2 changes (decreases or increases), for example, the pressure release mechanism 130 can open the vent hole 125 to release the pressure in the container body 2. The pressure release mechanism 130 includes the stopper portion 121, the vent hole 125, the valve packing 131, the push-in member 142, and the operation button 143 described above. That is, in this embodiment, the pressure release mechanism 130 is provided in the lid 20.

[0174] The watertight gasket 70 is detachably attached to the plug portion 121. The watertight gasket 70 is fitted into a gasket mounting flange 123 of the plug portion 121. The watertight gasket 70 has a cylindrical gasket body 71 with a bottom, 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.

[0175] The upper surface of the bottom wall of the packing body 71 contacts the lower surface of the packing mounting flange 123. The peripheral wall of the packing body 71 surrounds the packing mounting flange 123 from the radial outside over the entire circumferential direction.

[0176] The packing body 71 has a circular through-hole 71a centered on the central axis C. The through-hole 71a is disposed in the center of the bottom wall of the packing body 71. The through-hole 71a is disposed so as to overlap with the vent hole 125 when viewed from the top-bottom direction. In this embodiment, the inner diameter of the through-hole 71a is larger than the inner diameter of the vent hole 125. A valve packing 131 is disposed inside the through-hole 71a.

[0177] The lower surface of the inner flange 72 contacts the upper surface of the packing mounting flange 123 . The outer flange 73 is in liquid-tight contact with the protruding portion 8. As a result, the waterproof gasket 70 seals the gap between the plug portion 121 and the protruding portion 8. That is, in this embodiment as well, the waterproof gasket 70 directly seals the gap between the lid body 20 (plug portion 121) and the container body 2 (protruding portion 8).

[0178] Next, a method of using (opening) the cap unit 103 of this embodiment will be described. With the cover 20 in the closed and locked state shown in FIG. 11, the user slides (moves backward) the operation button 143 from the forward end position to the backward end position against the biasing force of the slide biasing member 152.

[0179] When the user pushes operation button 143 downward against the biasing force of push-in biasing member 148 from the state in which operation button 143 has been moved to the retracted end position, as shown in FIG. 12 , operation button 143 is inserted into guide hole 28. At this time, push-in member 142 moves downward together with operation button 143, the upper end surface of valve packing 131 moves downward away from the lower surface of plug portion 121, and vent hole 125 communicates with the inside of container body 2. As a result, the inside and outside of container body 2 are communicated via vent hole 125 (i.e., the pressure inside container body 2 is released). At this time, push-in surface 151b of valve stem 151 comes into contact with receiving surface 126 of plug portion 121 from above.

[0180] 13, the front end of the disk-shaped portion (operation main body) of operation button 143 presses second extension portion 145b of locking member 145 downward, and locking member 145 rotates to the other side around second hinge 144 (clockwise direction about second hinge 144 in FIG. 13, which may also be referred to as the unlocking direction) against the biasing force of lock biasing member 146. As a result, first extension portion 145a is displaced forward, and the hook portion 147 is released from the locked state with respect to lock receiving portion 149.

[0181] When the engagement between the lock receiving portion 149 and the hook portion 147 is released, the lid body 20 enters an unlocked state, and the urging force of the torsion coil spring of the first hinge 30 causes the lid body 20 to rotate in the opening direction, resulting in the open state of the lid body 20 shown in Figures 14 and 15.

[0182] The cap unit 103 and beverage container 101 of this embodiment described above also provide the same effects as those of the previous embodiments. More specifically, in this embodiment, the front of the spout 11 protrudes above the hook (engaging portion) 147 of the lid locking mechanism 140, and therefore, when the lid 20 is in the open position, it protrudes above the lock receiving portion (engaged portion) 149 that engages with the hook 147. This prevents the lower lip or chin from coming into contact with the lock receiving portion 149 when the user places their mouth (lips) over the spout 11 from the front to drink a beverage. The user can drink a beverage smoothly from the front of the cap unit 103, is less likely to feel uncomfortable during use, and is comfortable to use.

[0183] Furthermore, in this embodiment, the lid locking mechanism 140 is housed within the lid body 20 and does not protrude outside the cap unit 103, which allows for a more compact cap and improved design.

[0184] Furthermore, in this embodiment, the reduced pressure state of the container body 2 can be released by the pressure release mechanism 130. That is, the pressure release mechanism 130 releases the blocked state of the air vent 125 by the valve packing 131, and air is drawn in through the air vent 125, thereby eliminating the pressure difference between the inside and outside of the container body 2 and making it easier to open the lid 20.

[0185] Furthermore, in this embodiment, the pressure release mechanism 130 releases the pressure inside the container body 2 while the lid locking mechanism 140 is unlocking the lid 20. In other words, the unlocking operation of the lid locking mechanism 140 and the pressure release operation of the pressure release mechanism 130 are performed consecutively as a series of operations, providing good operability.

[0186] In the first and second embodiments described above, the present invention is applied to a beverage container 1, 101 having a hot / cold insulation function provided by a container body 2 having a vacuum insulation structure, but the present invention is not limited to this. That is, the present invention can be widely applied to a capped container in which a cap unit is detachably attached to the mouth / neck portion of the container body.

[0187] The present invention may be combined with the various configurations described in the above-described embodiments and modifications, and may also include additions, omissions, substitutions, and other modifications of the configurations, without departing from the spirit of the present invention. Furthermore, the present invention is not limited to the above-described embodiments, but is limited only by the claims. [Explanation of symbols]

[0188] 1,101...beverage container, 2...container body, 2d...upper opening, 3,103...cap unit, 8...extension, 10...cap body, 11...drinking spout, 12...liquid passage, 20...lid body, 21,121...stopper portion, 30...first hinge (hinge), 40,140...lid locking mechanism, 47,147...hook portion (locking portion), 60,61,110...opening packing, 70...watertight packing, 80,130...pressure release mechanism

Claims

1. A cap unit that can be detachably attached to a container body having an open top, a cap body attached to an upper opening of the container body and having a liquid passage opening that connects the inside and outside of the container body; a lid that covers the liquid passage port from above; a hinge that rotatably connects the lid body to the cap body; a waterproof packing that directly seals the gap between the lid and the container body; a lid locking mechanism that fixes the lid body in a closed position relative to the cap body, the lid locking mechanism has a locking portion that is locked with the lid body or the cap body, The hinge is disposed at the rear of the cap unit, The locking portion is disposed at the front of the cap unit, the cap body has a drinking spout portion having substantially the same diameter as the upper opening, is disposed directly above the upper opening, and has the liquid passage hole formed therein; The drinking spout portion extends in the vertical direction so as to be continuous with the upper opening, and a front portion of the drinking spout portion protrudes upward beyond the engaging portion. Cap unit.

2. The lid body has a plug portion that is inserted into the upper opening through the inside of the drinking spout portion, The watertight gasket seals the gap between the plug portion and a protruding portion protruding from the inside of the container body. The cap unit according to claim 1 .

3. an opening packing that seals the gap between the cap body and the upper opening; The cap unit according to claim 1 or 2.

4. The lid body has a pressure release mechanism, The pressure release mechanism includes: a vent hole penetrating the bottom wall of the plug portion in the vertical direction; a valve packing that closes the vent hole in an openable and closable manner; It is possible to block the communication of the vent hole, and then release the blockage to open the vent hole and release the pressure in the container body. The cap unit according to claim 2 .

5. The protruding portion is provided below the upper opening. The cap unit according to claim 2 .

6. A cap unit that can be detachably attached to a container body having an open top, a cap body attached to an upper opening of the container body and having a liquid passage opening that connects the inside and outside of the container body; a lid that covers the liquid passage port from above; a hinge that rotatably connects the lid body to the cap body; a waterproof packing that directly seals the gap between the lid and the container body; a lid locking mechanism that fixes the lid body in a closed position relative to the cap body; an opening packing that seals the gap between the cap body and the upper opening, the lid locking mechanism has a locking portion that is locked with the lid body or the cap body, The hinge is disposed at the rear of the cap unit, The locking portion is disposed at the front of the cap unit, the cap body has a drinking spout portion having substantially the same diameter as the upper opening, is disposed directly above the upper opening, and has the liquid passage hole formed therein; The drinking spout portion extends in the vertical direction so as to be connected to the upper opening, and a front portion of the drinking spout portion protrudes above the locking portion, The lid body has a plug portion that is inserted into the upper opening through the inside of the drinking spout portion, The watertight gasket seals the gap between the plug portion and a protruding portion protruding from the inside of the container body. Cap unit.

7. The cap unit according to any one of claims 1 to 6, the container body to which the cap unit is attached, Beverage container.

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