Cap unit and beverage container

Abstract

The present application provides a cap unit and a beverage container capable of maintaining a locked state of a cover even if the cover is impacted due to falling or the like. The cap unit includes a cap main body having a liquid passage that communicates an inside of a container main body with an outside, a cover disposed on an upper side of the cap main body and covering the liquid passage, a hinge that links the cover to the cap main body so as to freely rotate, and a cover locking mechanism that fixes the cover to the cap main body at a closed position. The cover locking mechanism includes a locked portion provided on one of the cap main body and the cover and a locking portion provided on the other of the cap main body and the cover and locked to the locked portion from a front side. The cap main body has an abutted portion, and the cover has an abutted portion. After the cover is displaced to a front side, the abutted portion of the cap main body is abutted to the abutted portion of the cover from a rear side.

Description

Technical Field

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

[0002] As an existing cap unit, for example, a cap unit described in Patent Document 1 is known. The cap unit includes: a cap body that closes the upper opening of the container body and has a liquid inlet communicating with the interior and exterior of the container body; a cap body that is rotatably connected to the cap body via a hinge and opens and closes the liquid inlet; and a locking device that fixes (locks) the cap body relative to the cap body in the closed position. The hinge connects the rear end of the cap body to the rear end of the cap body, and the locking device fixes the front end of the cap body and the front end of the cap body. Furthermore, in Patent Document 1, an elastic member that closes the air hole applies force to the cap body in the opening direction around the hinge.

[0003] Patent Document 1: Japanese Patent No. 3937428

[0004] In beverage containers equipped with such a cap unit, if an impact occurs from the hinge side (rear side) due to a fall, the cap may shift forward. This shift can lead to the cap being unintentionally released from its locking mechanism, causing the cap to open and beverage to leak out of the container. Summary of the Invention

[0005] One of the objectives of this invention is to provide a cap unit and a beverage container that can maintain the locked state of the cap even when subjected to impacts such as falling.

[0006] One embodiment of the present invention is a cap unit installed on a container body with an upper opening, comprising: a cap body that closes the upper opening of the container body and has a liquid inlet communicating with the interior and exterior of the container body; a cap body disposed on the upper side of the cap body and covering the liquid inlet; a hinge that connects the cap body to the cap body for free rotation; and a cap locking mechanism that fixes the cap body in a closed position relative to the cap body, the hinge being disposed at the rear of the cap unit, the cap locking mechanism being disposed at the front of the cap unit, the cap locking mechanism having a locked portion disposed on one of the cap body and the cap body; and a locking portion disposed on the other of the cap body and the cap body and locking from the front relative to the locked portion, the cap body having an abutment portion, the cap body having an abutment portion, and the cap body having an abutment portion, the abutment portion abutting from the rear relative to the abutment portion after the cap body is displaced forward.

[0007] Preferably, based on the cap unit, the locking part is provided on the cap body, the locking part is provided on the cap body, and the cap locking mechanism has a locking member for the locking part. In the locked state where the cap body is fixed in the closed position by the cap locking mechanism, the front-to-back gap between the abutting part and the abutting part is smaller than the front-to-back gap between the locking member and the cap body.

[0008] Preferably, based on the cap unit, the locking part is provided on the cap body, the locked part is provided on the cap body, and the cap locking mechanism has a locking member for the locked part. In the locked state where the cap body is fixed in the closed position by the cap locking mechanism, the front-back dimension between the abutting part and the abutting part is smaller than the front-back dimension between the locked part and the locking part in the front-back direction.

[0009] Preferably, based on the cap unit described above, the cap body has a first bearing portion extending along the hinge central axis of the hinge, the cap body has a second bearing portion coaxially configured with the first bearing portion, the hinge has a hinge axis that axially supports the first bearing portion and the second bearing portion to allow free rotation about the hinge central axis, the cap body has an opposing wall portion facing the second bearing portion from the front, the abutting portion is the opposing wall portion, and the abutting portion is the second bearing portion.

[0010] Preferably, based on the cap unit, the abutting part and the abutting part are respectively arranged on both sides in the left and right direction centered on the central axis of the cap unit.

[0011] In addition, one embodiment of the beverage container of the present invention includes the aforementioned cap unit and the aforementioned container body for mounting the aforementioned cap unit.

[0012] Preferably, based on the above-mentioned beverage container, the main body of the container has a vacuum insulation structure.

[0013] According to one embodiment of the cap unit and beverage container of the present invention, the cap can maintain a good locked state even when subjected to impacts such as falling. Attached Figure Description

[0014] Figure 1 This is a perspective view of a beverage container according to the first embodiment of the present invention.

[0015] Figure 2 This is a cross-sectional view of a beverage container.

[0016] Figure 3It is a cross-sectional view showing a portion of a beverage container, indicating the closed state (closed position) of the lid.

[0017] Figure 4 It is a three-dimensional view showing a part of a beverage container, indicating the open state (open position) of the lid.

[0018] Figure 5 This is a sectional view showing the cap unit; specifically, the section is located in the left-right direction. Figure 3 The difference is that the illustration of the waterproof seal is omitted.

[0019] Figure 6 This is a perspective view showing a portion of a beverage container according to a second embodiment of the present invention, showing the lid in an open state.

[0020] Figure 7 It is a cross-sectional perspective view of a portion of a beverage container, showing the lid in the closed state.

[0021] Figure 8 This is a perspective view showing a portion of a beverage container according to a third embodiment of the present invention, showing the lid in an open state.

[0022] Figure 9 This is a side view showing a portion of a beverage container, indicating the lid is closed.

[0023] Figure 10 This is a cross-sectional perspective view showing a modified example of the cover locking mechanism.

[0024] Explanation of reference numerals in the attached figures

[0025] 1A, 1B, 1C…Cap unit; 2…Container body; 2d…Upper opening; 10…Cap body; 12…Liquid inlet; 18…First bearing section; 19…Opposing wall section (abutted section); 20…Cap body; 23…Second bearing section (abutting section); 30…First hinge; 31…Hinge shaft; 50…Cap locking mechanism; 52, 81…Locking components; 54…Ring stop section (locking section); 56…Hook section (locking section); 5 8… Locking bearing part (locked part); 59… Stop bearing part (locked part); 60… Force applying part; 70… First wall part (abutted part); 71… Second wall part (abutting part); 72… Rib part (abutted part); 73… Groove part (abutting part); 83… First claw part (locked part); 84… Second claw part (locked part); 100… Beverage container; A… Hinge central axis; C… Central axis; L1… Dimension; L2… Clearance dimension. Detailed Implementation

[0026] <First Implementation>

[0027] ReferenceFigures 1-5 The cap unit 1A of the first embodiment of the present invention and the beverage container 100 having the cap unit 1A will be described below. Furthermore, in the following description, the cap unit 1A may be simply referred to as a cap and the beverage container 100 as a container.

[0028] like Figure 1 and Figure 2 As shown, the beverage container 100 of this embodiment includes a cap unit 1A and a bottomed cylindrical container body 2 for the cap unit 1A to be detachably mounted. The cap unit 1A includes a top cylindrical cap body 10 having a top wall (top plate wall), a top cylindrical cap body 20, a first hinge 30 that rotatably connects the cap body 20 relative to the cap body 10, a force-applying part 60, a waterproof seal 40 that seals the container body 2 and the cap body 10, and a cap locking mechanism 50.

[0029] The cap unit 1A and the container body 2 are coaxially arranged around the central axis C.

[0030] In this embodiment, the direction in which the central axis C extends is called the vertical direction. The direction from the bottom part 2a of the container body 2 toward the top wall part 20a of the cover 20 is called the upper side, and the direction from the top wall part 20a toward the bottom part 2a is called the lower side.

[0031] The direction orthogonal to the central axis C is called the radial direction. The direction of the radial direction closest to the central axis C is called the radial inner side or simply the inner side, and the direction farther away from the central axis C is called the radial outer side or simply the outer side.

[0032] The direction of rotation around the central axis C is called the circumferential direction.

[0033] Furthermore, the radial direction passing through the first hinge 30 and the central axis C is referred to as the front-rear direction. The direction from the first hinge 30 toward the central axis C in the front-rear direction 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.

[0034] Furthermore, the direction orthogonal to the front-back direction in the radial direction is called the left-right direction. For example... Figure 2 As shown, when the beverage container 100 is viewed from the front as an upright position with the top wall 20a of the lid 20 facing upward in the vertical direction, the direction facing left is referred to as the left side, and the direction facing right is referred to as the right side. Additionally, although not specifically illustrated, the posture (state) of the beverage container 100 with the top wall 20a of the lid 20 facing downward in the vertical direction is referred to as the inverted posture.

[0035] In addition, the central axis C can also be distinguished from the drinking spout central axis, hinge central axis A, etc., and referred to as the cap central axis C or the container central axis C.

[0036] In addition, such as Figure 3 and Figure 4 As shown, the hinge center axis A of the first hinge 30 extends in the left-right direction. The hinge center axis A is positioned further back than the center axis C. The center axis C and the hinge center axis A are in a position of mutual torsion.

[0037] The direction orthogonal to the hinge's central axis A is called the hinge radial direction. The direction in the hinge radial direction closest to the hinge's central axis A is called the inner side of the hinge radial direction, and the direction furthest from the hinge's central axis A is called the outer side of the hinge radial direction.

[0038] The direction around which the hinge's central axis A is centered is called the hinge circumferential direction.

[0039] like Figure 2 As shown, the beverage container 100 can keep the beverage (liquid contents, liquid) contained in the container body 2 warm or cold through the container body 2 having a vacuum insulation structure. The container body 2 is a bottomed cylindrical shape with an open top. In addition, contents other than beverages can also be contained in the container body 2.

[0040] Specifically, the container body 2 is composed of a double-structured container, which for example has a bottomed cylindrical outer container 4 made of stainless steel and an inner container 5, and the mouth parts of the inner container 5 are joined together when the inner container 5 is housed inside the outer container 4.

[0041] like Figure 3 As shown, the upper cylindrical portion of the inner container 5 is fitted into the upper cylindrical portion of the outer container 4, and the upper cylindrical portions are welded together in this fitted state. As a result, the upper opening 2d of the container body 2 becomes a sharp shape known as the "rolled edge welding structure".

[0042] In addition, a vacuum insulation layer 6 is provided between the outer container 4 and the inner container 5. The vacuum insulation layer 6 can be formed, for example, by blocking the exhaust hole located at the center of the bottom surface of the outer container 4 in a chamber that has been depressurized (evacuated) to a high vacuum.

[0043] like Figure 1 and Figure 2 As shown, the container body 2 has: a generally circular plate-shaped bottom portion 2a; a body portion 2b, which is generally cylindrical and whose lower end is connected to the outer periphery of the bottom portion 2a; a generally cylindrical neck portion 2c, which is disposed on the upper side of the body portion 2b and is narrower than the body portion 2b; and a shoulder portion 2e, which is generally conical and narrower as it faces upward, and connects the upper end of the body portion 2b to the lower end of the neck portion 2c.

[0044] like Figure 3 As shown, the inner circumference of the neck portion 2c is narrower than the inner circumference of the body portion 2b. Additionally, an external thread 7 is provided on the outer circumference of the neck portion 2c. Furthermore, the upper end of the neck portion 2c serves as the upper opening 2d of the container body 2, and the opening is circular.

[0045] In addition, such as Figure 1 As shown, the beverage container 100 of this embodiment has a generally cylindrical shape, but the shape of the beverage container 100 is not particularly limited and can be appropriately modified according to size, design, etc. In addition, the outer surfaces of the container body 2, the cap body 10, and the cap 20 can be coated or printed.

[0046] like Figure 3 As shown, the cap unit 1A is installed at the neck 2c of the container body 2, forming a plug that closes the upper opening 2d of the container body 2.

[0047] The cap body 10 is a component that closes the upper opening 2d of the container body 2, and is made of, for example, a heat-resistant resin such as polypropylene (PP).

[0048] like Figures 3-5 As shown, the cap body 10 has a top wall portion 10a, a peripheral wall portion 10b, a cylindrical portion 14, a first bearing portion 18, and an opposing wall portion (the portion being abutted) 19. Furthermore, Figure 3 and Figure 5 A cross-section (longitudinal section) of the cap unit 1A parallel to the central axis C is shown. Specifically, Figure 3 This represents a longitudinal sectional view that is perpendicular to the left-right direction and includes the central axis C. Figure 5 Indicates that it is perpendicular to the left and right directions and its position in the left and right directions is the same as... Figure 3 Different longitudinal sectional views (longitudinal sectional views offset to the right from the central axis C).

[0049] The top wall portion 10a covers the upper opening 2d of the container body 2 from above. The top wall portion 10a is generally annular. The top wall portion 10a has a drinking spout portion 11 that protrudes upward from the top wall portion 10a. The drinking spout portion 11 is cylindrical in the vertical direction, and its central axis (not shown) is located forward of the central axis C of the container.

[0050] The drinking spout 11 has a liquid inlet 12 inside. That is, the cap body 10 has a liquid inlet 12. The liquid inlet 12 extends through the top wall 10a in the vertical direction to connect the inside and outside of the container body 2. That is, the liquid inlet 12 extends vertically inside the drinking spout 11 and opens at the upper and lower ends of the drinking spout 11, respectively.

[0051] Additionally, the top wall portion 10a has a vent 13 that extends vertically through the top wall portion 10a and connects the interior and exterior of the container body 2. That is, the cap body 10 has a vent 13. The vent 13 is positioned in the front-to-back direction between the drinking spout portion 11 (liquid inlet 12) and the first hinge 30. In this embodiment, the vent 13 is circular and located further back than the central axis C of the container.

[0052] exist Figure 3 With the cover 20 in the closed state, the liquid inlet 12 and the vent 13 are covered by the cover 20. Additionally, in Figure 4 With the cover 20 shown in the open state, the liquid inlet 12 and the vent 13 are open to the upward.

[0053] like Figure 3 As shown, the peripheral wall portion 10b is a cylindrical shape extending downward from the outer periphery of the top wall portion 10a. The peripheral wall portion 10b surrounds the neck portion 2c circumferentially from the radially outer side. The lower end of the peripheral wall portion 10b is positioned opposite or in contact with the shoulder portion 2e from above with a gap. The peripheral wall portion 10b is a generally cylindrical shape extending in the vertical direction in a continuous manner with the body portion 2b of the container body 2.

[0054] The peripheral wall portion 10b has an internal thread portion 15 on its inner peripheral surface. The internal thread portion 15 is screwed onto the external thread portion 7 of the neck portion 2c. That is, the cap body 10 is installed on the outside of the neck portion 2c by screwing on while covering the upper opening 2d of the container body 2.

[0055] The cylindrical portion 14 is cylindrical about the central axis C and extends downward from the top wall portion 10a. Viewed from below, the cylindrical portion 14 forms an annulus surrounding the liquid inlet 12. Specifically, viewed from below, the cylindrical portion 14 circumferentially surrounds the liquid inlet 12 from the radially outer side. The cylindrical portion 14 is inserted into the neck portion 2c.

[0056] like Figure 3 and Figure 4 As shown, the first bearing portion 18 is disposed at the upper end and rear end of the cap body 10. Specifically, the first bearing portion 18 is disposed at the center and rear end of the top wall portion 10a in the left-right direction. The first bearing portion 18 protrudes from the top wall portion 10a toward the upper and rear sides. The first bearing portion 18 is generally cylindrical and extends along the hinge center axis A of the first hinge 30.

[0057] The first bearing section 18 has a bearing sleeve section 18a and a connecting wall section 18b.

[0058] The bearing sleeve portion 18a is cylindrical with the hinge central axis A as its center, extending in the left-right direction. The bearing sleeve portion 18a is the main body of the first bearing portion 18, and therefore can also be referred to as the main body portion 18a.

[0059] The connecting wall portion 18b connects the bearing sleeve portion 18a to the top wall portion 10a. Specifically, the connecting wall portion 18b connects the lower part of the outer peripheral surface of the bearing sleeve portion 18a to the rear end of the upper surface of the top wall portion 10a. Furthermore, the connecting wall portion 18b is the root portion of the first bearing portion 18, and therefore can also be referred to as the root portion 18b.

[0060] like Figure 4 and Figure 5 As shown, the opposing wall portion 19 is disposed at the upper and rear ends of the cap body 10. Specifically, the opposing wall portion 19 is a rib-shaped portion disposed at the rear end of the top wall portion 10a, protruding upward from the top wall portion 10a and extending in the left-right direction. The opposing wall portion 19 is disposed between the vent hole 13 and the first hinge 30 in the front-back direction. The opposing wall portion 19 is disposed side by side with the connecting wall portion 18b of the first bearing portion 18 in the left-right direction.

[0061] The opposing wall portion 19 has a rear surface 19a facing rearward. In this embodiment, the rear surface 19a is an inclined surface extending rearward as it faces downward. Specifically, the rear surface 19a is a concave curved surface centered on the hinge central axis A. That is, in Figure 5 In the longitudinal section shown, the rear surface 19a is a concave arc centered on the hinge axis A.

[0062] like Figure 4 As shown, in this embodiment, a pair of opposing wall portions 19 are provided at intervals in the left-right direction. The left (one) opposing wall portion 19 of the pair is arranged adjacent to the left side of the connecting wall portion 18b of the first bearing portion 18. The right (other) opposing wall portion 19 of the pair is arranged adjacent to the right side of the connecting wall portion 18b of the first bearing portion 18.

[0063] In this embodiment, the opposing wall portion 19 and the connecting wall portion 18b of the first bearing portion 18 are interconnected. Specifically, the right end of the left opposing wall portion 19 of the pair of opposing wall portions 19 is connected to the lower left end of the connecting wall portion 18b of the first bearing portion 18. In addition, the left end of the right opposing wall portion 19 of the pair of opposing wall portions 19 is connected to the lower right end of the connecting wall portion 18b of the first bearing portion 18.

[0064] like Figure 3 As shown, the cover 20 is disposed on the upper side of the cap body 10. The cover 20 is a component that covers the upper part of the cap body 10 and freely covers the liquid inlet 12 and the vent hole 13. The cover 20 may have portions made of heat-resistant resin such as polypropylene (PP) (e.g., portions other than the liquid sealing portion 21, the vent sealing portion 22, and the cover component 24, described later). Figures 3-5As shown, the cover 20 has a top wall portion 20a, a peripheral wall portion 20b, a liquid-sealing portion 21, a vent-sealing portion 22, a second bearing portion (abutment portion) 23, and a cover component 24.

[0065] The top wall portion 20a is disposed on the upper side of the top wall portion 10a of the cap body 10. In this embodiment, the top wall portion 20a is a plate-shaped portion extending in the front-rear direction and tilts upward as it moves from the first hinge 30 toward the front.

[0066] like Figure 3 As shown, the top wall portion 20a has: a hole portion 20c that extends through the top wall portion 20a in the vertical direction; and a support cylinder 20d that protrudes downward from the top wall portion 20a and is disposed between the hole portion 20c and the first hinge 30 in the front-rear direction.

[0067] The peripheral wall portion 20b is a cylindrical shape extending downward from the outer periphery of the top wall portion 20a. The peripheral wall portion 20b is configured to surround the top wall portion 10a of the cap body 10.

[0068] The liquid-sealing part 21 is made of elastic components such as heat-resistant rubber or elastomers, for example, silicone rubber. That is, the liquid-sealing part 21 is elastically deformable. The liquid-sealing part 21 is detachably mounted on the top wall 20a of the cap 20. When the cap 20 is closed, the liquid-sealing part 21 contacts the upper opening of the drinking spout 11 in a liquid-tight manner. Thus, the liquid-sealing part 21 blocks the liquid inlet 12 in a manner that allows it to open from above. The liquid-sealing part 21 is a plug-like sealing component that closes the liquid inlet 12 of the drinking spout 11.

[0069] The liquid-permeable closure 21 has: a shaft portion 21a, which is embedded in the hole portion 20c; and a plug portion 21b, which is connected to the lower end of the shaft portion 21a, forming a generally dome shape that convexes downward. The liquid-permeable closure 21 can be freely attached to and detached from the hole portion 20c. Therefore, the cover 20 and the liquid-permeable closure 21 can be cleaned separately, thereby maintaining a hygienic relationship between the cover 20 and the liquid-permeable closure 21.

[0070] In this cap unit 1A, when the cap 20 is in Figure 3 When the liquid-sealing part 21 is in the closed position as shown, the plug 21b of the liquid-sealing part 21 abuts against the upper opening edge of the drinking spout 11, i.e., the opening of the liquid-sealing port 12. The plug 21b elastically deforms and becomes tightly fitted to the opening of the liquid-sealing port 12. Thus, the liquid-sealing part 21 can block the liquid-sealing port 12 of the drinking spout 11.

[0071] The vent seal 22 is made of an elastic component, such as heat-resistant rubber like silicone rubber or an elastomer. That is, the vent seal 22 is elastically deformable. The vent seal 22 is detachably mounted to the top wall 20a of the cover 20. When the cover 20 is closed, the vent seal 22 is in liquid-tight contact with the upper opening of the vent hole 13. Thus, the vent seal 22 blocks the vent hole 13 in a manner that allows it to open from above. The vent seal 22 is a bottomed cylindrical sealing component that blocks the vent hole 13.

[0072] The vent seal 22 is externally fitted into the support cylinder 20d. The vent seal 22 can be freely attached to and detached from the support cylinder 20d. Therefore, the cover 20 and the vent seal 22 can be cleaned separately, thereby maintaining a hygienic relationship between the cover 20 and the vent seal 22.

[0073] In this cap unit 1A, when the cap 20 is in the closed position, the bottom of the vent sealing part 22 abuts against the area around the opening of the vent hole 13, and the bottom elastically deforms, becoming tightly fitted against the area around the opening of the vent hole 13. Thus, the vent hole 13 can be blocked by the vent sealing part 22.

[0074] Furthermore, in this embodiment, the liquid-sealing part 21 and the air-sealing part 22 are integrally formed from a single component. Therefore, the number of components can be reduced, and component loss during cleaning can be prevented.

[0075] like Figure 5 As shown, the second bearing portion 23 is disposed at the rear end of the cover body 20. Specifically, the second bearing portion 23 is disposed at the rear end of the top wall portion 20a and the rear end of the peripheral wall portion 20b, protruding downward from the top wall portion 20a and protruding radially inward from the peripheral wall portion 20b.

[0076] like Figure 4 As shown, the second bearing portion 23 is a generally cylindrical shape extending along the hinge center axis A of the first hinge 30, and is coaxially arranged with the bearing sleeve portion 18a of the first bearing portion 18. The second bearing portion 23 is arranged side by side with the bearing sleeve portion 18a of the first bearing portion 18 in the left-right direction.

[0077] In this embodiment, a pair of second bearing portions 23 are provided at intervals in the left-right direction. The left (one) second bearing portion 23 of the pair is arranged adjacent to the left side of the bearing sleeve portion 18a of the first bearing portion 18. The right (other) second bearing portion 23 of the pair is arranged adjacent to the right side of the bearing sleeve portion 18a of the first bearing portion 18.

[0078] like Figure 5As shown, the second bearing portion 23 faces the opposing wall portion 19 from the rear. In other words, the opposing wall portion 19 faces the second bearing portion 23 from the front. In this embodiment, a gap of size L1 is provided between the opposing wall portion 19 and the second bearing portion 23 in the front-rear direction. More specifically, a gap of size L1, which is constant in the hinge radial direction along the hinge circumferential direction, is provided between the rear surface 19a of the opposing wall portion 19 and the outer peripheral surface of the second bearing portion 23.

[0079] For example, after the cover 20 is displaced forward due to an impact such as falling, the second bearing portion 23 abuts against the opposing wall portion 19 from the rear.

[0080] like Figure 4 As shown, the left (one) opposing wall portion 19 of a pair of opposing wall portions 19 is positioned opposite the left (one) second bearing portion 23 of a pair of second bearing portions 23 from the front. Similarly, the right (other) opposing wall portion 19 of a pair of opposing wall portions 19 is positioned opposite the right (other) second bearing portion 23 of a pair of second bearing portions 23 from the front. In this embodiment, the sets of opposing wall portions (abutting portions) 19 and second bearing portions (abutting portions) 23 are respectively arranged on both sides in the left-right direction centered on the central axis C of the cap unit 1A.

[0081] Cover component 24 is a generally cylindrical or generally annular plate-shaped component centered on the hinge central axis A (see reference). Figure 7 The cover component 24 is arranged adjacent to one of a pair of second bearing portions 23 in the left-right direction. The cover component 24 can preferably be made of a material different from that of the second bearing portion 23, such as polyacetal (POM) or acrylonitrile butadiene styrene (ABS), which has excellent wear resistance compared to the second bearing portion 23.

[0082] like Figure 4 As shown, in this embodiment, the cover member 24 is disposed between the right (other) second bearing portion 23 of a pair of second bearing portions 23 and the bearing sleeve portion 18a of the first bearing portion 18. The cover member 24 and the other second bearing portion 23 are locked together in a state that restricts relative movement in the circumferential direction of the hinge. In addition, the cover member 24 and the bearing sleeve portion 18a rotate freely in the circumferential direction of the hinge, specifically, they slide freely into contact.

[0083] like Figure 3 As shown, a first hinge 30 is disposed at the rear of the cap unit 1A. The first hinge 30 connects the upper rear end of the cap body 10 and the rear end of the cap 20, allowing them to rotate freely relative to each other in the circumferential direction of the hinge. The cap 20 is connected to the cap body 10 via the first hinge 30, thereby enabling... Figure 3 The positions (blocked positions) of the liquid inlet 12 and the vent 13 shown are as follows:Figure 4 The open liquid inlet 12 and the vent 13 shown can rotate freely between their positions (open position).

[0084] The first hinge 30 has a hinge shaft 31 that supports the first bearing portion 18 and the second bearing portion 23 so that they can rotate freely about the hinge central axis A. The hinge shaft 31 is a shaft extending in the left-right direction and is inserted into the bearing sleeve portion 18a of the first bearing portion 18, a pair of second bearing portions 23, the cover member 24, and the force-applying portion 60 (see reference). Figure 7 Hinge shaft 31, for example, is a shaft or tube made of stainless steel.

[0085] The force-applying part 60 applies force to the cap body 20 relative to the cap body 10 in the opening direction around the first hinge 30 (i.e., the hinge circumferential direction) (see reference). Figure 7 In this embodiment, the force-applying part 60 is disposed within the first hinge 30. The force-applying part 60 is a torsion coil spring extending in a spiral shape around the hinge's central axis A. In this embodiment, the force-applying part 60 is disposed throughout the interior of the bearing sleeve 18a of the first bearing part 18 and the interior of the cover member 24, and applies force to the second bearing part 23 of the other bearing part via the cover member 24 in the opening direction in the circumferential direction of the hinge, thereby applying force to the cover 20 in the opening direction. With this force, when the locking state based on the cover locking mechanism 50 is released, the cover 20 rotates from the closed position toward the open position about the first hinge 30.

[0086] like Figure 3 As shown, the waterproof seal 40 is detachably installed on the inner side of the cap body 10. The waterproof seal 40 is an annular sealing component that seals (waterproofs) the container body 2 and the cap body 10. It is made of, for example, heat-resistant rubber such as silicone rubber, or elastic components such as elastomers. That is, the waterproof seal 40 can elastically deform. Specifically, in this embodiment, the waterproof seal 40 seals the upper opening 2d of the container body 2 and the top wall 10a of the cap body 10 in a liquid-tight manner.

[0087] In addition, Figure 3 In the middle, as the shape before elastic deformation, a part of the waterproof seal 40 is represented by a double-dotted line (imaginary line).

[0088] The waterproof seal 40 is installed on the cap body 10 while being externally embedded in the cylindrical portion 14. Furthermore, the waterproof seal 40 can be detached from the cylindrical portion 14. This allows for separate cleaning of the cap body 10 and the waterproof seal 40, thus maintaining a hygienic relationship between the cap body 10 and the waterproof seal 40.

[0089] The waterproof seal 40 has: a cylindrical seal peripheral wall 41 that is embedded in the cylindrical portion 14; an annular sealing flange 42 that extends radially outward from the seal peripheral wall 41 and seals the upper opening 2d of the container body 2 with the top wall portion 10a of the cap body 10; and an extended protruding convex edge 43 that extends radially inward from the lower end of the seal peripheral wall 41.

[0090] The sealing peripheral wall 41 extends vertically about the central axis C and fits onto the outer side of the cylindrical portion 14. The inner circumferential surface of the sealing peripheral wall 41 contacts the outer circumferential surface of the cylindrical portion 14. The lower end of the sealing peripheral wall 41 protrudes further downward than the lower end of the cylindrical portion 14.

[0091] The sealing flange 42 is a generally annular plate centered on the central axis C. The sealing flange 42 protrudes radially outward from the upper end of the peripheral wall 41 of the seal and extends in the circumferential direction.

[0092] As in Figure 3 As indicated by the double-dotted line, in this embodiment, the sealing flange 42 has: a groove 42a, which is recessed radially inward from the outer peripheral surface of the sealing flange 42 and extends circumferentially; and a pair of flange portions 42b, disposed above and below the groove 42a. Therefore, the cross-sectional shape (longitudinal cross-sectional shape) of the sealing flange 42 parallel to the central axis C is approximately C-shaped or approximately U-shaped, opening radially outward.

[0093] The upper surface of the upper flange of the pair of flange portions 42b contacts the lower surface of the top wall portion 10a. That is, the upper surface of the sealing flange 42 contacts the lower surface of the top wall portion 10a. The wall thickness (plate thickness) of one of the pair of flange portions 42b is thinner than the wall thickness of the sealing element peripheral wall 41. The pair of flange portions 42b are also particularly easy to elastically deform in the waterproof seal 40, and can easily fit tightly against the upper opening portion 2d and the top wall portion 10a respectively, thereby enabling a stable seal between them.

[0094] The extended protruding edge 43 is an annular plate centered on the central axis C. The extended protruding edge 43 protrudes radially inward from the lower end of the peripheral wall 41 of the seal and extends circumferentially. The extended protruding edge 43 is positioned directly below the peripheral wall of the cylindrical portion 14. A gap is provided in the vertical direction between the upper surface of the extended protruding edge 43 and the lower end face of the cylindrical portion 14. Therefore, during the assembly of the waterproof seal 40, the extended protruding edge 43 is prevented from contacting the lower end face of the cylindrical portion 14 first, for example due to manufacturing errors of the components, thus preventing an unstable fit between the sealing flange 42 and the top wall portion 10a.

[0095] like Figure 1 , Figure 3 as well as Figure 4As shown, the cap locking mechanism 50 is disposed at the front of the cap unit 1A. The cap locking mechanism 50 overcomes the rotational force about the first hinge 30 (hinge center axis A) in the opening direction, fixing the cap 20 to the aforementioned closed position (closed state) relative to the cap body 10. The cap locking mechanism 50 fixes the front end of the cap body 10 to the front end of the cap 20. Furthermore, Figure 1 and Figure 3 This indicates that the cover 20 is fixed in the closed position (locked state) by the cover locking mechanism 50. Figure 4 This indicates that the locking mechanism 50 has released the cover body 20 from its fixed position (lock released state).

[0096] The cover locking mechanism 50 includes: a second hinge 55, whose hinge central axis (not shown) extends in the left-right direction; a locking member 52, which is rotatable about the hinge central axis of the second hinge 55; and a ring stop (locking part) 54, which rotates freely about the hinge central axis of the second hinge 55. Furthermore, the second hinge 55 includes: an inner hinge portion 51; and an outer hinge portion 53, located on either side of the inner hinge portion 51 in the left-right direction. The inner hinge portion 51 and the outer hinge portion 53 are coaxially arranged about the hinge central axis of the second hinge 55.

[0097] The locking member 52 is rotatably (swinging) mounted on the cap body 10 via the inner hinge portion 51. The ring stop portion 54 is rotatably mounted on the cap body 10 via the outer hinge portion 53. That is, the locking member 52 and the ring stop portion 54 are respectively provided on the cap body 10.

[0098] An inner hinge portion 51 is provided on the front surface of the peripheral wall portion 10b of the cap body 10. The inner hinge portion 51 is disposed inside the outer hinge portion 53 (i.e., on the side of the central axis C) in the left-right direction. The locking member 52 is supported by the inner hinge portion 51 and can rotate freely in the front-back direction. The locking member 52 has: an upper arm portion 52a extending upward from the hinge center axis of the second hinge 55; and a lower arm portion 52b extending downward from the hinge center axis of the second hinge 55. At the front end of the upper arm portion 52a (the upper end of the locking member 52), a hook portion (locking portion) 56 is provided protruding rearward. That is, the hook portion 56 is provided in the locking member 52, and the hook portion 56 is provided in the cap body 10 via the locking member 52 and the inner hinge portion 51. A compression coil spring 57 is provided between the lower arm portion 52b and the peripheral wall portion 10b in a compressed state in the front-back direction.

[0099] The outer hinge portion 53 is provided on the front surface of the peripheral wall portion 10b of the cap body 10. The ring stop portion 54 is composed of a curved, approximately C-shaped component, the two ends of which are supported by the outer hinge portion 53 so that it can rotate freely in the vertical direction.

[0100] Additionally, the cover locking mechanism 50 includes: a locking receiving portion (locked portion) 58 for the hook portion 56 of the locking member 52 to engage; and a stop receiving portion (locked portion) 59 for the ring stop portion 54 to hook onto. The locking receiving portion 58 is a claw-shaped portion protruding forward from the lower end of the front side of the cover body 20. The stop receiving portion 59 is configured as a generally semi-circular ring shape adapted to the shape of the inner circumference of the ring stop portion 54, protruding forward from a position surrounding the locking receiving portion 58 on the front surface of the cover body 20. That is, the locking receiving portion 58 and the stop receiving portion 59 are respectively provided on the cover body 20.

[0101] More specifically, the cap locking mechanism 50 includes: a locking receiving portion (locked portion) 58 disposed on one of the cap body 10 and the cap body 20 (cap body 20 in this embodiment); and a hook portion (locking portion) 56 disposed on the other of the cap body 10 and the cap body 20 (cap body 10 in this embodiment), which locks against the locking receiving portion 58 from the front. Furthermore, the lower surface of the hook portion 56 locks against the upper surface of the locking receiving portion 58 in a manner that allows it to move in the front-rear direction.

[0102] Furthermore, the cap locking mechanism 50 includes: a stop receiving portion (locked portion) 59, disposed on one of the cap body 10 and the cap body 20 (cap body 20 in this embodiment); and an annular stop portion (locked portion) 54, disposed on the other of the cap body 10 and the cap body 20 (cap body 10 in this embodiment), which locks against the stop receiving portion 59 from the front. Additionally, the inner periphery of the annular stop portion 54 locks against the outer periphery of the stop receiving portion 59 in a manner that allows it to move in the front-rear direction.

[0103] In addition, such as Figure 3 and Figure 5 As shown, in the locked state where the cover 20 is fixed in the closed position by the cover locking mechanism 50, the front-back dimension L1 between the opposing wall portion (abutted portion) 19 and the second bearing portion (abutting portion) 23 is smaller than the front-back dimension L2 between the locking member 52 and the cover 20. Specifically, in this embodiment, the aforementioned gap dimension L2 refers to the size of the front-back dimension (so-called "clearance dimension") L2 between the rear surface of the portion other than the hook portion 56 provided in the upper arm portion 52a of the locking member 52 and the front end of the locking receiving portion 58.

[0104] In the cover locking mechanism 50, when the cover 20 is in the closed position, the hook 56 of the locking member 52 engages with the locking bearing part 58, thereby the cover 20 overcomes the rotational force of the first hinge 30 in the opening direction and becomes fixed relative to the cap body 10.

[0105] From this state, the user compresses the coil spring 57 and presses it backward into the lower arm 52b of the locking member 52, thereby releasing the hook 56 from the locking bearing 58. This allows the cover 20, which has been forced in the opening direction, to rotate to the open position.

[0106] Furthermore, in the lid locking mechanism 50, when the lid 20 is in the closed position, the ring stop 54 hooks (locks) onto the stop receiving part 59 to prevent the lid 20 from rotating in the opening direction. Thus, the lid locking mechanism 50 can prevent the lid 20 from opening due to unnecessary (unintentional) operation of the locking member 52.

[0107] In the cap unit 1A and beverage container 100 of this embodiment described above, in the event of an impact from the first hinge 30 side (rear side) due to, for example, falling, the cap 20 displaces forward, and the second bearing portion (abutting portion) 23 of the cap 20 abuts against the opposing wall portion (abutted portion) 19 of the cap body 10. By abutting the abutting portion 23 against the abutted portion 19 to absorb the impact, further forward displacement of the cap 20 is suppressed. Since the amount of forward displacement of the cap 20 can be minimized, the unintentional release of the locking state of the cap locking mechanism 50 on the cap 20 can be prevented.

[0108] More specifically, because the forward displacement of the cover 20 is minimized, the locking state of the locking bearing 58 and the hook 56 is well maintained. Additionally, the locking state of the stop bearing 59 and the ring stop 54 is also well maintained.

[0109] As described above, according to this embodiment, even if the lid 20 is impacted by falling or other factors, it can maintain a good locked state and prevent beverage from leaking out of the container.

[0110] Furthermore, in this embodiment, when the cover 20 is in the locked state, the front-to-back gap dimension L2, also known as the "clearance dimension" L2, between the locking member 52 and the cover 20 is smaller than the front-to-back dimension L1 between the abutting portion 19 and the abutting portion 23. Therefore, after the cover 20 is displaced forward due to an impact such as falling, it is first abutted by the abutting portion 19 and the abutting portion 23, thereby preventing the cover 20 from displacing forward relative to the locking member 52 beyond the aforementioned clearance dimension L2 and abutting. The locking state of the hook portion 56 of the locking member 52 and the locking receiving portion 58 of the cover 20 is well maintained, thus more stably preventing the cover 20 from being unintentionally released from its locked state.

[0111] Furthermore, although not specifically illustrated, when a front-to-back gap (clearance size) is provided between the ring stop portion 54 and the cover peripheral wall portion 20b in the locked state of the cover body 20, the front-to-back dimension L1 between the opposing wall portion (abutted portion) 19 and the second bearing portion (abutted portion) 23 is smaller relative to this gap size, thereby maintaining the locking state of the stop portion receiving portion 59 and the ring stop portion 54 in the same good manner as described above.

[0112] Furthermore, in this embodiment, the opposing wall portion 19 faces the second bearing portion 23 from the front. Therefore, even if the cover 20 is impacted from the first hinge 30 side (rear side) in the open position, the impact can be absorbed by the contact between the opposing wall portion 19 and the second bearing portion 23. Thus, by increasing the strength near the first hinge 30 of the cap unit 1A, damage to the first hinge 30 and the like caused by falling can be suppressed.

[0113] In addition, in this embodiment, the connecting wall portion 18b of the mounting wall portion 19 and the first bearing portion 18 are connected to each other.

[0114] In this case, by increasing the strength of the first bearing portion 18 through the opposing wall portion 19, damage to the first hinge 30 and the like can be further suppressed. In addition, by increasing the rigidity of the first bearing portion 18, the amount of forward displacement of the cover 20 is suppressed to a smaller extent, resulting in a more stable and effective effect brought about by the present embodiment described above.

[0115] In addition, in this embodiment, Figure 5 In the longitudinal section shown, the rear surface 19a of the opposing wall portion 19 is a concave arc centered on the hinge central axis A, that is, the rear surface 19a is a concave curved surface extending in the circumferential direction of the hinge.

[0116] In this case, the effect of the second bearing portion 23 being supported by the wall portion 19 is more stable.

[0117] In addition, in this embodiment, the opposing wall portion (the portion being abutted) 19 and the second bearing portion (the portion abutting) 23 are respectively arranged on both sides in the left-right direction centered on the central axis C of the cap unit 1A.

[0118] In this case, not only is the forward displacement of the cover 20 minimized, but even when the cover 20 rotates (torsies) from the first hinge 30 when viewed from above, the impact can be absorbed by the contact between the opposing wall portions (abutted portions) 19 on either side and the second bearing portion (abutting portion) 23, thus minimizing the displacement. Therefore, the aforementioned effects brought about by this embodiment are more significant, and damage to the first hinge 30 and the like caused by the torsional displacement (deformation) of the cover 20 can also be suppressed.

[0119] <Second Implementation>

[0120] Next, refer to Figure 6 and Figure 7 The cap unit 1B of the second embodiment of the present invention and the beverage container 100 having the cap unit 1B will be described. Furthermore, in this embodiment, structures identical to those in the above embodiments will be labeled with the same names, reference numerals, etc., and their descriptions will be omitted.

[0121] Figure 6 This indicates that the cover 20 is in the open position. Figure 7 This indicates that the cover 20 is in the closed position. Furthermore, Figure 7 It is a cross-sectional perspective view including a cross section perpendicular to the central axis C (illustration omitted).

[0122] like Figure 6 and Figure 7 As shown, in this embodiment, the cap body 10 has a first wall portion (abutted portion) 70 facing rearward. The first wall portion 70 is a wall portion provided on the top wall portion 10a, protruding upward and extending in the left-right direction. In this embodiment, the first wall portion 70 is disposed between the drinking spout portion 11 (liquid inlet 12) and the vent hole 13 in the front-back direction.

[0123] Furthermore, the cover 20 has a second wall portion (abutment portion) 71, which abuts against the first wall portion 70 from the rear after the cover 20 is displaced forward due to an impact such as falling. The second wall portion 71 is a rib-like structure that protrudes inward from the inner circumferential surface of the cover peripheral wall portion 20b and extends in the vertical direction. In the illustrated example, the amount of protrusion of the second wall portion 71 from the inner circumferential surface of the cover peripheral wall portion 20b increases towards the lower side (the cap body 10 side). In addition, the second wall portion 71 may be positioned opposite the first wall portion 70 with a gap in the closed position (closed state) of the cover 20, or it may be in contact as long as the dimensions can be managed with high precision.

[0124] Specifically, such as Figure 7As shown, in the locked state where the cover 20 is fixed in the closed position by the cover locking mechanism 50, the front-to-back dimension L1 between the first wall portion (abutted portion) 70 and the second wall portion (abutting portion) 71 is smaller than the aforementioned gap dimension L2 (see reference). Figure 3 ).

[0125] In addition, the first wall portion 70 and the second wall portion 71, which are opposite to each other, are respectively provided on both sides in the left-right direction centered on the central axis C of the cap unit 1B.

[0126] The cap unit 1B and beverage container 100 of this embodiment, as described above, can achieve the same effects as those of the embodiment described above.

[0127] Furthermore, in this embodiment, the contact position between the first wall portion (abutted portion) 70 and the second wall portion (abutting portion) 71 can be positioned further forward than the contact position between the opposing wall portion (abutted portion) 19 and the second bearing portion (abutting portion) 23 in the first embodiment. That is, the contact position can be positioned closer to the cover locking mechanism 50, thereby more stably preventing the cover locking mechanism 50 from unintentionally releasing the locking state of the cover body 20.

[0128] <Third Implementation Method>

[0129] Next, refer to Figure 8 and Figure 9 The cap unit 1C of the third embodiment of the present invention and the beverage container 100 having the cap unit 1C will be described. Furthermore, in this embodiment, structures identical to those in the above embodiments will be labeled with the same names, reference numerals, etc., and their descriptions will be omitted.

[0130] Figure 8 This indicates that the cover 20 is in the open position. Figure 9 This indicates that the cover 20 is in the closed position.

[0131] like Figure 8 and Figure 9 As shown, in this embodiment, the cap body 10 has a rib (abutting portion) 72 that protrudes upward from the top wall portion 10a and extends in the left-right direction. In the illustrated example, the rib 72 and the drinking spout portion 11 (liquid inlet 12) are arranged side by side in the left-right direction.

[0132] Additionally, the cover 20 has a groove (abutment portion) 73 that engages with the rib 72 in the closed position (closed state). The groove 73 is recessed upward from the lower end surface of the cover peripheral wall portion 20b and extends in the left-right direction. The groove 73 penetrates the cover peripheral wall portion 20b in the left-right direction and has openings on the outer and inner peripheral surfaces of the cover peripheral wall portion 20b.

[0133] After the cover 20 is displaced forward due to an impact such as falling, the groove 73 abuts against the rib 72 from the rear. In addition, the groove 73 may be positioned opposite the rib 72 with a gap in the closed position (closed state) of the cover 20, or it may be in contact (fitted) as long as the dimensions can be managed with high precision.

[0134] Specifically, such as Figure 9 As shown, in the locked state where the cover 20 is fixed in the closed position by the cover locking mechanism 50, the front-to-back dimension L1 between the rib (abutted portion) 72 and the groove (abutting portion) 73 is smaller than the aforementioned gap dimension L2 (see reference). Figure 3 ).

[0135] In addition, the ribs 72 and grooves 73 that are opposite to each other are respectively provided on both sides in the left and right direction centered on the central axis C (not shown).

[0136] The cap unit 1C and beverage container 100 of this embodiment, as described above, can achieve the same effects as those of the above embodiment.

[0137] Furthermore, in this embodiment, the contact position between the rib (abutted portion) 72 and the groove (abutting portion) 73 can be positioned further forward than the contact position between the opposing wall portion (abutted portion) 19 and the second bearing portion (abutting portion) 23 in the first embodiment. That is, the contact position can be positioned closer to the cover locking mechanism 50, thus more stably preventing the cover locking mechanism 50 from unintentionally releasing the lock on the cover 20.

[0138] Furthermore, although not specifically illustrated, as a variation of this embodiment, it may also be configured such that: the cap body 10 has a groove (abutted portion), the cap 20 has a rib (abutting portion), and after the cap 20 is displaced forward, the rib abuts against the groove from the rear.

[0139] The present invention is not limited to the embodiments described above. For example, structural changes can be made without departing from the spirit of the present invention, as will be described below.

[0140] In the above embodiments, an example is given where the force-applying part 60 that applies force to the cover 20 in the opening direction around the first hinge 30 is a torsion coil spring disposed inside the first hinge 30, but it is not limited to this.

[0141] The force-applying part can also be composed of a ventilated sealing part 22, for example. In this case, when the cover 20 is in the closed state, the lower end of the ventilated sealing part 22 is pressed against the top wall 10a and elastically deformed, and the force of restoring deformation applies force to the cover 20 in the opening direction around the first hinge 30.

[0142] In addition, although not specifically illustrated, the force-applying part may also be composed of an annular elastic member hooked to the first hinge 30 and the top wall portion 20a to apply force to the cover 20 in the opening direction around the first hinge 30.

[0143] In the above embodiments, an example is given in which the locking member 52 of the cover locking mechanism 50 can rotate around the second hinge 55, but it is not limited to this.

[0144] Figure 10 This illustrates a variation of the cap locking mechanism 50. In this variation, the cap locking mechanism 50 includes: a locking member 81 that slides freely in the front-rear direction; and an elastic member 82 capable of elastic deformation that applies force forward to the locking member 81. The locking member 81 and the elastic member 82 are disposed on the cap body 10. The elastic member 82 is capable of elastic deformation in the front-rear direction and is made of, for example, rubber, an elastomer, or a compression coil spring.

[0145] In addition, a first claw (locked portion) 83 protruding towards the front is provided at the upper end of the locking member 81.

[0146] Furthermore, a second claw (locking portion) 84 protruding rearward is provided at the lower front end of the cover peripheral wall portion 20b of the cover body 20. Moreover, the second claw (locking portion) 84 locks against the first claw (locked portion) 83 from the front.

[0147] More specifically, the cap locking mechanism 50 has: a first claw portion (locked portion) 83 of the locking member 81, which is disposed on one of the cap body 10 and the cap body 20 (cap body 10 in this modified example); and a second claw portion (locked portion) 84, which is disposed on the other of the cap body 10 and the cap body 20 (cap body 20 in this modified example), and locks against the first claw portion 83 from the front side.

[0148] Even when adopted Figure 10 In the case of the cover locking mechanism 50 in the modified example shown, the same effect as in the above embodiment can also be obtained.

[0149] Additionally, in this variant example, such as Figure 10 As shown, preferably, in the locked state where the cover 20 is fixed in the closed position by the cover locking mechanism 50, the front-to-back dimension L1 between the abutting portion (e.g., the opposing wall portion 19 in the first embodiment) and the abutting portion (e.g., the second bearing portion 23 in the first embodiment) is smaller than the front-to-back dimension of the locking portion in the front-to-back direction relative to the locking dimension of the first claw portion 83 and the second claw portion 84. Furthermore, the aforementioned locking dimension is the front-to-back dimension of the locking portion where the lower surface of the first claw portion 83 contacts the upper surface of the second claw portion 84, and can also be referred to as the overlap amount.

[0150] In this case, after the cover 20 is displaced forward due to an impact such as falling, it is first abutted by the abutting part 19 and the abutting part 23, thereby preventing the cover 20 from displacing forward beyond the aforementioned locking size. As a result, the locking state between the first claw part 83 of the locking member 81 and the second claw part 84 of the cover 20 is maintained, thus more stably preventing the cover 20 from being unintentionally released from its locking state.

[0151] In the above embodiments, an example was given of applying the present invention to a beverage container 100 that has heat preservation and cold preservation functions through a container body 2 with a vacuum insulation structure, but it is not limited thereto. That is, the present invention can be widely applied to capped containers where the cap unit closes the upper opening of the container body.

[0152] Without departing from the spirit of the invention, the various structures described in the above embodiments and variations can be combined, and additional, omitted, substituted, and other modifications to the structures are possible. Furthermore, the invention is not limited to the above embodiments, but only to the claims.

Claims

1. A cap unit, installed on a container body with an upper opening, characterized in that, The cap unit includes: The cap body blocks the upper opening of the container body and has a liquid inlet connecting the inside and outside of the container body; A cover body is disposed on the upper side of the cap body and covers the liquid inlet; A hinge connects the cover body relative to the cap body, allowing it to rotate freely; as well as The cap locking mechanism secures the cap body relative to the cap body in the closed position. The hinge is located at the rear of the cap unit. The cap locking mechanism is located at the front of the cap unit. The cover locking mechanism has: The locking part is provided on the cover; and A locking part is provided on the cap body and locks against the locked part from the front side. The cap body has a contact portion. The cover has an abutting portion; when the cover is displaced forward in the closed position, the abutting portion abuts against the abutted portion from the rear. The cover locking mechanism has a locking component configured for the locking portion. When the cover is locked in the closed position by the cover locking mechanism, the front-to-back dimension between the abutting part and the abutting part is smaller than the front-to-back gap dimension between the locking member and the cover.

2. The cap unit according to claim 1, characterized in that, The cap body has a first bearing portion extending along the hinge central axis of the hinge. The cover has a second bearing portion coaxially arranged with the first bearing portion. The hinge has a hinge axis that axially supports the first bearing portion and the second bearing portion, allowing them to rotate freely about the hinge's central axis. The cap body has opposing wall portions that face the second bearing portion from the front. The part that is abutted is the opposing wall part. The abutting part is the second bearing part.

3. The cap unit according to claim 1, characterized in that, The abutting part and the abutting part are respectively arranged on both sides in the left-right direction centered on the central axis of the cap unit.

4. A cap unit, installed on a container body with an upper opening, characterized in that, The cap unit includes: The cap body blocks the upper opening of the container body and has a liquid inlet connecting the inside and outside of the container body; A cover body is disposed on the upper side of the cap body and covers the liquid inlet; A hinge connects the cover body relative to the cap body, allowing it to rotate freely; as well as The cap locking mechanism secures the cap body relative to the cap body in the closed position. The hinge is located at the rear of the cap unit. The cap locking mechanism is located at the front of the cap unit. The cover locking mechanism has: The locking part is provided on the cap body; and A locking part is provided on the cover and locks against the locked part from the front side. The cap body has a contact portion. The cover has an abutting portion; when the cover is displaced forward in the closed position, the abutting portion abuts against the abutted portion from the rear. The cover locking mechanism has a locking component configured for the locked portion. When the cover is locked in the closed position by the cover locking mechanism, the front-to-back dimension between the abutting part and the abutting part is smaller than the front-to-back dimension between the abutting part and the locking part in the front-to-back direction relative to the locking dimension between the abutting part and the locking part in the front-to-back direction.

5. The cap unit according to claim 4, characterized in that, The cap body has a first bearing portion extending along the hinge central axis of the hinge. The cover has a second bearing portion coaxially arranged with the first bearing portion. The hinge has a hinge axis that axially supports the first bearing portion and the second bearing portion, allowing them to rotate freely about the hinge's central axis. The cap body has opposing wall portions that face the second bearing portion from the front. The part that is abutted is the opposing wall part. The abutting part is the second bearing part.

6. The cap unit according to claim 4, characterized in that, The abutting part and the abutting part are respectively arranged on both sides in the left-right direction centered on the central axis of the cap unit.

7. A beverage container, characterized in that, The beverage container includes: The cap unit according to any one of claims 1 to 6; and The container body for mounting the cap unit.

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