Cap unit and container with cap

Abstract

Provided is a lid unit that has superior cleanability of a water-stopping packing and that can maintain the seal achieved by the water-stopping packing well. A water-stopping packing (23) is composed of a ring-shaped elastic member that abuts against a protruding portion (6) that protrudes from the inside of a container main body (2) in its entirety in a state in which a lid main body is installed to the container main body (2), and has a ring-shaped fitting protrusion (23a) that fits into a fitting recess (24), an elastic flange portion (23b) that protrudes from the outer peripheral surface of the fitting protrusion (23a) in the entire diameter direction, and an elastic sleeve portion (23c) that protrudes from between the fitting protrusion (23a) and the elastic flange portion (23b) in the entire downward direction, and in a state in which the lower surface of the elastic flange portion (23b) is in contact with the surface of the protruding portion (6) on the entry side and the outer peripheral surface of the elastic sleeve portion (23c) is in contact with the surface of the protruding portion (6) on the top side, the inner peripheral surface of the elastic sleeve portion is continuously provided downward from the lower surface of the fitting protrusion.

Description

Technical Field

[0001] This invention relates to lid units and lidded containers. Background Technology

[0002] Previously, there was a type of covered container that included a cap unit (plug) that could be easily attached to the neck of the container body with an upper opening, thereby closing the upper opening of the container body (for example, see Patent Document 1 below).

[0003] Such a cover unit has a cover body that closes the upper opening of the container body and is installed on the container body by screwing. In addition, the cover unit has a structure that has a water-stopping sealant that can be installed on the cover body in a removable manner and uses the water-stopping sealant to seal (stop water) between the container body and the cover body.

[0004] The sealing element consists of a ring-shaped elastic component and is easily installed and detachable from the cap body. When the cap body is screwed onto the container body, the sealing element abuts against a protruding portion that extends circumferentially from the inside of the container body, thus achieving a state where it elastically deforms while remaining tightly fitted to the protruding portion throughout its circumference. This allows for a seal (waterproofing) between the container body and the cap body.

[0005] For example, Patent Document 1 discloses a structure in which an annular sealing filler has an annular tongue-shaped portion that abuts against the inclined surface of the upper part of the sealing step and extends outward in the shape of a brim, and an annular drooping portion that abuts against the sealing step and protrudes in the shape of an inverted U. The drooping portion is expanded by the internal pressure in the liquid container and pressed against the protruding surface of the sealing step. In addition, the tongue-shaped portion is pressed against the inclined surface of the upper part of the sealing step by the negative pressure in the liquid container.

[0006] Furthermore, Patent Document 2 discloses a structure in which a sealed, heat-insulated container with a lid, which is mainly used to hold hot food, has a sealing part with an annular protrusion having an inverted U-shaped cross-section near its outer periphery that fits tightly against the support strip of the container body, thereby sealing the inside of the container.

[0007] Patent Document 1: Japanese Patent No. 3687084

[0008] Patent Document 2: Japanese Patent Application Publication No. 2016-169042

[0009] However, in the filling component described in Patent Document 1, a concave gap is formed between the tongue-shaped portion and the drooping portion, making it easy for beverages to accumulate in this gap. Furthermore, this gap is difficult to clean and easily becomes unhygienic.

[0010] Furthermore, in the sealing portion described in Patent Document 2 above, a concave gap is also formed near the outer periphery. Since the container has a wide opening, it is assumed that the contents, such as soup or solid food, which are highly nutritious, will accumulate in or be trapped within this gap. Therefore, such a gap is difficult to clean and easily becomes unhygienic. Summary of the Invention

[0011] The present invention was made in view of the prior art and aims to provide a cover unit that has excellent cleanability of the water-stop sealant and can well maintain the sealing performance achieved by the water-stop sealant, and a covered container having such a cover unit thereby further improving ease of use.

[0012] To achieve the above objectives, the present invention provides the following solutions.

[0013] [1] A cover unit, which is detachably mounted to a container body with an upper opening.

[0014] The cover unit is characterized by having:

[0015] The lid body closes the upper opening of the container body; and

[0016] A water-stopping sealant is installed on the cover body in a removable manner and seals the space between the container body and the cover body.

[0017] The cap body has an annular fitting portion on the outer peripheral surface of the portion that is inserted into the inner side of the container body from the upper opening.

[0018] The aforementioned sealing and sealing component is composed of a ring-shaped elastic member. When the cap body is installed on the container body, the elastic member abuts against a protruding portion that extends throughout the entire circumference of the inner side of the container body.

[0019] The aforementioned water-stopping and sealing component includes: an annular fitting portion that fits into the fitting portion of the aforementioned one; an elastic flange portion that protrudes circumferentially from the outer periphery of the fitting portion of the aforementioned one throughout the entire circumference in the expansion direction; and an elastic sleeve portion that protrudes downwardly from between the fitting portion of the aforementioned one and the elastic flange portion throughout the entire circumference.

[0020] The aforementioned water-stopping and sealing member is positioned such that the lower surface of the aforementioned elastic flange portion contacts the inlet side surface of the aforementioned protrusion portion, and the outer peripheral surface of the aforementioned elastic sleeve portion contacts the top side surface of the aforementioned protrusion portion.

[0021] The inner circumferential surface of the aforementioned elastic sleeve portion is continuously provided downward from the lower surface of the other fitting portion.

[0022] [2] Based on the cover unit described in [1] above, it is characterized in that,

[0023] The aforementioned water-stopping and sealing component elastically deforms along the inlet side of the aforementioned protrusion via the aforementioned elastic flange portion, thereby causing the aforementioned elastic sleeve portion to elastically displace in the direction in which the outer peripheral surface of the aforementioned elastic sleeve portion contacts the top side surface of the aforementioned protrusion portion.

[0024] [3] Based on the cover unit described in [1] or [2] above, it is characterized in that,

[0025] The aforementioned elastic sleeve portion has a shape that gradually expands in diameter downwards.

[0026] [4] Based on the cover unit described in [1] or [2] above, it is characterized in that,

[0027] The aforementioned elastic flange portion is located on the lower end side of the outer peripheral surface of the other fitting portion.

[0028] [5] Based on the cover unit described in [1] or [2] above, it is characterized in that,

[0029] The fitting portion of the aforementioned component has a shape in which the width gradually increases from its bottom side toward the opening side.

[0030] The fitting portion of the other party has a shape in which the width gradually narrows from its base end side toward its front end side.

[0031] [6] Based on the cover unit described in [1] or [2] above, it is characterized in that,

[0032] The aforementioned elastic component is made of fluororubber.

[0033] [7] Based on the cover unit described in [1] or [2] above, it is characterized in that,

[0034] The cap body is screwed onto the container body.

[0035] [8] A lidded container, characterized in that it comprises:

[0036] The cover unit described in any one of [1] to [7] above, and

[0037] The container body for mounting the aforementioned cover unit.

[0038] [9] Based on the lidded container described in [8] above, it is characterized in that,

[0039] The container body described above has a vacuum insulation structure.

[0040] As described above, according to the present invention, a cover unit is provided that provides excellent cleanability of the water-stop sealant and can well maintain the sealing performance achieved by the water-stop sealant, and a covered container having such a cover unit can further improve ease of use. Attached Figure Description

[0041] Figure 1 This is a cross-sectional view showing the structure of a covered container having a lid unit according to an embodiment of the present invention.

[0042] Figure 2 It means Figure 1 The diagram shows a perspective view of the structure of the opening forming component of the cover unit.

[0043] Figure 3 shows Figure 1 The structure of the water-stopping sealant of the cover unit shown is shown in Figure 3(A), which is a perspective view from the top, and Figure 3(B), which is a perspective view from the bottom.

[0044] Figure 4 This is a cross-sectional view showing the structure of the water-stopping sealant shown in Figure 3.

[0045] Figure 5 It indicates that the water-stopping sealant and Figure 1 The diagram shows a sectional perspective view of the container with a lid, showing the extended portion of the container body in contact with the container.

[0046] Figure 6 It means Figure 1 Cross-sectional view of other structural examples of lidded containers shown.

[0047] Figure 7 It means Figure 1 Cross-sectional view of other structural examples of lidded containers shown.

[0048] Explanation of reference numerals in the attached figures

[0049] 100…Lidded container; 1, 1A, 1B…Lid unit; 2…Container body; 3…Outer container; 4…Inner container; 5…Vacuum insulation layer; 6…Extend; 7…Lid body; 9…Lid body; 10…Internal thread; 11…External thread; 12…Orifice forming component; 13…Liquid inlet; 14…Ventilation inlet; 15…Disassembly and assembly mechanism; 23…Water-stopping sealant; 23a…Matching protrusion (Matching part of the other party); 23b…Elastic flange; 23c…Elastic sleeve; 23d…Matching recess (Matching part of the other party); 24…Matching recess (Matching part of one party); 24a…Matching protrusion (Matching part of one party); 24b…Flange; 25…Blocking component; 28…Lid locking mechanism. Detailed Implementation

[0050] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0051] As one embodiment of the present invention, for example, Figure 1 The lidded container 100 with lid unit 1 shown will be described. Furthermore, Figure 1 This is a cross-sectional view showing the structure of a covered container 100 having a cover unit 1.

[0052] like Figure 1 As shown, the lidded container 100 of this embodiment includes a lid unit 1 of this embodiment and a container body 2 for the lid unit 1 to be detachably installed. The lidded container 100 is a beverage container that can keep the beverage (contents) contained in the container body 2 warm or cold by means of the container body 2 having a vacuum insulation structure.

[0053] Specifically, the container body 2 is composed of a double-layered container having a bottomed cylindrical outer container 3 made of, for example, stainless steel, and an inner container 4, which are joined together at their rims so that the inner container 4 is housed inside the outer container 3. Furthermore, a vacuum insulation layer 5 is provided between the outer container 3 and the inner container 4. The vacuum insulation layer 5 can be formed, for example, by blocking an exhaust vent located at the center of the bottom surface of the outer container 3 within a chamber that has been depressurized (evacuated) to a high vacuum.

[0054] The container body 2 has a generally circular bottom portion 2a, a generally cylindrical cylindrical body portion 2b that rises from the outer periphery of the bottom portion 2a, and a generally cylindrical neck portion 2c that is tapered at the upper side of the cylindrical body portion 2b. The upper end of the neck portion 2c has a circular opening, serving as the upper opening 2d of the container body 2. Furthermore, the inner circumferential surface of the neck portion 2c is tapered compared to the inner circumferential surface of the cylindrical body portion 2b. Additionally, an annular protrusion 6 is provided protruding along the entire circumference of the inner circumferential surface of the neck portion 2c.

[0055] Furthermore, the lidded container 100 of this embodiment has a generally cylindrical shape, but the shape of the lidded container 100 is not particularly limited and can be appropriately modified according to size, appearance design, etc. In addition, painting, printing, etc. can also be performed on the outer peripheral surface of the container body 2.

[0056] Reference Figures 1-5 The structure of the cover unit 1 in this embodiment will be described.

[0057] also, Figure 2 Figure 3 is a perspective view showing the structure of the opening forming member 12 of the cover unit 1. Figure 3 shows the structure of the water-stopping sealing member 23 of the cover unit 1. Figure 3(A) is a perspective view viewed from above, and Figure 3(B) is a perspective view viewed from below. Figure 4This is a cross-sectional view showing the structure of the water-stopping sealant 23. Figure 5 This is a cross-sectional perspective view showing the state in which the water-stopping sealant 23 abuts against the protrusion 6 of the container body 2 of the covered container 100.

[0058] like Figure 1 As shown, the cover unit 1 of this embodiment constitutes a plug that closes the upper opening 2d of the container body 2. Specifically, the cover unit 1 includes a cover body 7 and a cover 9 that is rotatably mounted to the cover body 7 via a hinge 8.

[0059] Furthermore, in the following description, the side on which the cover 9 is mounted to the cover body 7 via the hinge 8 is referred to as the "rear side (back side)" of the cover unit 1 (covered container 100), and the opposite side is referred to as the "front side (front face)" of the cover unit 1 (covered container 100).

[0060] The cap body 7 is made of a heat-resistant resin such as polypropylene (PP). The cap body 7 has: a peripheral wall portion 7a that is formed in a generally cylindrical shape in a manner continuous with the cylindrical portion 2b of the container body 2; an upper wall portion 7c that has an opening portion 7b formed on the upper part of the peripheral wall portion 7a, which is narrower than the peripheral wall portion 7a; and an opening forming member 12 that is detachably mounted to the opening portion 7b.

[0061] The cap body 7 is screwed onto the neck portion 2c of the container body 2 for easy attachment and detachment. Therefore, an internal thread portion 10 is provided on the inner circumferential surface of the peripheral wall portion 7a. On the other hand, an external thread portion 11 that engages with the internal thread portion 10 is provided on the outer circumferential surface of the neck portion 2c.

[0062] like Figure 1 as well as Figure 2 As shown, a mouth-forming component 12, which forms a drinking spout or a pouring spout (drinking spout in this embodiment), is detachably mounted at the opening 7b of the cap body 7. The mouth-forming component 12 is made of a heat-resistant resin such as polypropylene (PP).

[0063] The mouth forming component 12 has: a bottom wall portion 12a having a liquid inlet 13 and a vent 14; a cylindrical peripheral wall portion 12b rising upward from around the bottom wall portion 12a; a lower flange portion 12c protruding in an annular shape from the lower end of the outer peripheral surface of the bottom wall portion 12a; a pair of upper flange portions 12d protruding horizontally from the left and right sides of the upper end of the outer peripheral surface of the peripheral wall portion 12b; and a drinking mouth portion 12e protruding obliquely from the upper end of the front side of the peripheral wall portion 12b.

[0064] The drinking spout 12e is located on the front side of the mouth forming member 12. The liquid inlet 13 is configured to penetrate the bottom wall portion 12a in the vertical direction. The vent 14 is configured to penetrate the bottom wall portion 12a in the vertical direction from a position higher than the liquid inlet 13. In addition, the liquid inlet 13 is located on the side (front side) of the drinking spout 12e that is closer to the vent 14, and has a generally elliptical opening that is larger in the front-back direction than the vent 14 which forms a circular hole.

[0065] A disassembly and assembly mechanism 15 is provided between the cover body 7 and the opening forming member 12 for detachably installing the opening forming member 12 into the opening 7b of the cover body 7. The disassembly and assembly mechanism 15 has a stop member 18, which includes a first claw portion 16 provided on the front side of the opening forming member 12 and a second claw portion 17 provided on the rear side of the opening forming member 12.

[0066] The first claw portion 16 is configured to protrude forward from the upper end side of the outer peripheral surface of the peripheral wall portion 12b. The second claw portion 17 is configured to protrude rearward from the upper end (front end) side of the stop member 18. The stop member 18 is disposed on the rear side of the mouth forming member 12 and is rotatably mounted to the mouth forming member 12 via a hinge portion 19 located on its lower end (base end) side.

[0067] A force-applying member 20, made of an elastic component such as rubber or an elastomer, is disposed between the orifice-forming member 12 and the stop member 18. The force-applying member 20 is mounted on the surface of the stop member 18 opposite to the orifice-forming member 12. Alternatively, instead of the aforementioned elastic component, the force-applying member 20 may also be a spring component such as a coil spring.

[0068] When the front end of the stop 18 is rotated forward, the force-applying member 20 is compressed (elastically deformed) between the stop 18 and the opening forming member 12, thereby applying force to the stop 18 in a rearward direction. In addition, an operating part 18a is provided at the upper end (front end) of the stop 18 for easy rotation of the stop 18 with a finger.

[0069] On the other hand, the disassembly and assembly mechanism 15 has a first locking part 21 on the front side of the cover body 7 and a second locking part 22 on the rear side of the cover body 7. The first locking part 21 and the second locking part 22 are composed of stepped parts respectively provided at the front and rear positions of the opening 7b along the upper wall part 7c.

[0070] In the disassembly / assembly mechanism 15, with the first claw 16 positioned relative to the first locking portion 21, the opening forming member 12 is inserted from below into the inside of the opening 7b of the cover body 7. At this time, a pair of upper flange portions 12d abut against the lower surface of the upper wall portion 7c of the cover body 7. Furthermore, the first claw 16 is locked by the first locking portion 21.

[0071] In addition, the second claw 17 abuts against the edge of the opening 7b of the cover body 7, and as the second claw 17 passes over the edge of the opening 7b, the front end of the stop 18 rotates forward, and then the front end of the stop 18 returns to its original position to the rear. At the same time, the second claw 17 is locked by the second locking part 22.

[0072] Thus, the mouth-forming member 12 is installed in the opening 7b of the cap body 7. In addition, at the same time as the mouth-forming member 12 is installed, the drinking spout 12e protrudes outward (upward) from the opening 7b of the cap body 7.

[0073] On the other hand, in the disassembly and assembly mechanism 15, the locking state of the second claw 17 relative to the second locked portion 22 is released by rotating the operating part 18a of the stop member 18 forward. As a result, the locking state of the first claw 16 relative to the first locked portion 21 can be released, and the opening forming member 12 can be removed from the lower side of the opening 7b of the cover body 7.

[0074] The cap body 7, which is equipped with the mouth forming member 12, is installed on the neck portion 2c of the container body 2, thereby closing the upper opening 2d of the container body 2 when the mouth forming member 12 is inserted into the inside of the upper opening 2d.

[0075] like Figure 1 as well as Figure 2 As shown, the lower flange portion 12c of the mouth forming member 12 is the part that is inserted into the inner side of the container body 2 from the upper opening portion 2d of the cap body 7, and an annular fitting recess 24 that forms a fitting portion is provided all around the outer circumference of its upper side.

[0076] A sealing member 23 is installed in the fitting recess 24 of the mouth-forming member 12 in a removable manner. The sealing member 23 is an annular sealing member used to seal between the protrusion 6 (container body 2) and the mouth-forming member 12 (cap body 7). The sealing member 23 is made of elastic components such as heat-resistant rubber or elastomers, for example, silicone rubber or fluororubber. In particular, in this embodiment, an elastic component made of fluororubber is used as the sealing member 23. Fluororubber has properties such as excellent chemical resistance and difficulty in adhering to the odor of the contents.

[0077] As fluororubber, materials such as vinylidene fluoride (FKM), tetrafluoroethylene-propylene (FEPM), and tetrafluoroethylene-perfluorovinyl ether (FFKM) can be used.

[0078] like Figure 1 Figure 3 and Figure 4As shown, the sealing member 23 has an annular fitting protrusion 23a that fits into the fitting recess 24, serving as the other fitting part. By fitting the fitting protrusion 23a into the fitting recess 24, the sealing member 23 is installed on the mouth forming member 12 (cap body 7) in a removable manner.

[0079] On the other hand, the sealing sealant 23 can be removed from the fitting recess 24 (orifice forming member 12) by elastically deforming (stretching) itself. As a result, the sealing sealant 23 and the orifice forming member 12 can be cleaned separately, thereby maintaining hygiene between the sealing sealant 23 and the orifice forming member 12.

[0080] Furthermore, the fitting recess 24 has a tapered shape in which the width gradually increases from its bottom side toward the opening side. On the other hand, the fitting protrusion 23a, as a shape corresponding to the fitting recess 24, has a tapered shape in which the width gradually decreases from its base side toward the front side.

[0081] By forming the fitting recess 24 and fitting protrusion 23a into the aforementioned conical shape, the sealing member 23 can be easily installed and removed from the fitting recess 24 of the opening forming member 12. In particular, when using the sealing member 23 made of fluororubber, since fluororubber is a material that is difficult to stretch compared to silicone rubber, it is preferable to form the fitting recess 24 and fitting protrusion 23a into the aforementioned conical shape.

[0082] In addition, the water-stopping sealant 23 has an elastic flange portion 23b that protrudes from the outer periphery of the fitting protrusion 23a throughout the entire circumference in the expansion direction, and an elastic sleeve portion 23c that protrudes downward from between the fitting protrusion 23a and the elastic flange portion 23b throughout the entire circumference.

[0083] The elastic flange portion 23b is the portion that abuts against the surface of the protrusion portion 6 on the entry side, and is located on the lower end side of the outer peripheral surface of the fitting protrusion portion 23a.

[0084] On the other hand, the elastic sleeve portion 23c is the portion that abuts against the top side surface of the protrusion 6, located between the lower surface of the fitting protrusion 23a and the lower surface of the elastic flange portion 23b. The inner circumferential surface of the elastic sleeve portion 23c is provided smoothly and continuously from the lower surface of the fitting protrusion 23a downwards in an open inner circumferential state.

[0085] Furthermore, the elastic sleeve portion 23c has a tapered shape that gradually expands in diameter downwards. Thus, the relationship is: (outer diameter of the elastic flange portion 23b) > (inner diameter of the protruding portion 6) > (outer diameter of the elastic sleeve portion 23c).

[0086] The sealing member 23 is designed to abut against the protrusion 6 of the container body 2 when the cap body 7 is installed on the container body 2, thereby elastically deforming and tightly adhering to the protrusion 6 throughout its entire circumference. Specifically, the lower surface of the elastic flange portion 23b contacts the inlet side surface of the protrusion 6, and the outer peripheral surface of the elastic sleeve portion 23c contacts the top side surface of the protrusion 6.

[0087] At this time, the sealing member 23 elastically deforms along the inlet side surface of the protrusion 6 via the elastic flange portion 23b, causing the elastic sleeve portion 23c to elastically displace in the direction where its outer peripheral surface contacts the top side surface of the protrusion 6. As a result, the elastic flange portion 23b is lifted upward along the inlet side surface of the protrusion 6, and simultaneously, the elastic sleeve portion 23c expands in the diameter-expanding direction, thereby being pressed against the top side surface of the protrusion 6. Thus, the sealing member 23 can be tightly fitted to the protrusion 6, and the seal between the protrusion 6 (container body 2) and the opening forming member 12 (cap body 7) can be well maintained.

[0088] Furthermore, the water-stopping sealant 23 need not be limited to the above-mentioned elastic sleeve portion 23c having a tapered shape that gradually expands downwards. The shape of the elastic sleeve portion 23c can be any shape in which the elastic flange portion 23b elastically deforms along the surface of the entry side of the protrusion portion 6, thereby causing the elastic sleeve portion 23c to elastically displace in the direction of contact with the surface of the top side of the protrusion portion 6.

[0089] like Figure 1 As shown, the cover 9 closes the upper part of the cover body 7 and is made of a heat-resistant resin such as polypropylene (PP). The cover 9 has a peripheral wall portion 9a that is formed in a generally cylindrical shape in a manner continuous with the peripheral wall portion 7a of the cover body 7, and a top wall portion 9b that covers the top surface of the peripheral wall portion 9a.

[0090] A closing member 25 is provided inside the insertion opening forming member 12 on the inner side of the cover 9. The closing member 25 is installed at approximately the center of the lower surface side of the top wall portion 9b by fitting.

[0091] A sealing cap 26, which closes the liquid inlet 13 and air inlet 14 of the orifice forming member 12, is detachably mounted on the outer periphery of the sealing member 25. The sealing cap 26 is a plug-shaped sealing member used to seal between the orifice forming member 12 and the sealing member 25. The sealing cap 26 is made of an elastic member, which can be made of the same material as the aforementioned water-stopping sealing member 23.

[0092] The sealing member 26 is embedded in the sealing member 25 in such a way that it covers the outer periphery of the sealing member 25. In addition, the sealing member 26 is provided with a generally dome-shaped first plug portion 26a that abuts against the liquid inlet 13 and a generally cylindrical second plug portion 26b that abuts against the vent 14.

[0093] When the sealing member 26 is inserted inside the port forming member 12, it elastically deforms while closing the liquid inlet 13 with the first plug portion 26a tightly against the periphery of the liquid inlet 13, and closes the vent 14 with the second plug portion 26b tightly against the periphery of the vent 14. This allows for a seal between the port forming member 12 and the sealing member 25.

[0094] A force-applying component 27 is provided between the cover 9 and the hinge portion 8. The force-applying component 27 is made of a ring-shaped elastic component, such as rubber or an elastomer, and is hooked between the cover 9 and the hinge portion 8.

[0095] The cover 9 is in a state where the force-applying member 27 applies force in the direction (opening direction) toward the liquid inlet 13 and the vent 14 of the opening forming member 12. Furthermore, the force-applying member 27 is not limited to being composed of the elastic member described above; for example, it may be a structure in which a spring member such as a torsion coil spring is provided inside the hinge portion 8, thereby applying force to the cover 9 in the opening direction.

[0096] The cover unit 1 includes a cover locking mechanism 28, which fixes the cover 9 relative to the cover body 7 in the position where the cover 9 is closed to the upper part of the cover body 7 (hereinafter referred to as the closed position).

[0097] The cover locking mechanism 28 has a locking member 30 that is rotatably mounted to the cover body 7 via a hinge 29 and an annular stop member 31 that is rotatably mounted to the cover body 7 via a hinge 29.

[0098] The locking member 30 is supported by the hinge portion 29 located on the front side of the cover body 7 (peripheral wall portion 7a) and can rotate freely. The locking member 30 has a first arm portion 30a extending upward from the hinge portion 29 and a second arm portion 30b extending downward from the hinge portion 29.

[0099] A hook 32 is provided at the front end of the first arm 30a (the upper end of the locking member 30) in a rearward manner. A force-applying member 33, which is made of a spring member such as a coil spring, is disposed between the second arm 30b and the peripheral wall 7a. Alternatively, the force-applying member 33 may be made of an elastic member such as rubber or an elastomer, instead of the aforementioned spring member.

[0100] The annular stop 31 is composed of a partially open annular component, with both ends supported rotatably on the outside of the hinge portion 29. Thus, the annular stop 31 can rotate.

[0101] On the other hand, the cover locking mechanism 28 has a locking receiving portion 34 for the hook portion 32 of the locking member 30 to engage, and a stop receiving portion 35 for the annular stop member 31 to hook onto. The locking receiving portion 34 is composed of a claw portion that protrudes forward from the lower end of the front side of the cover body 9 (peripheral wall portion 9a). The stop receiving portion 35 has a shape corresponding to the inner side of the annular stop member 31, and is composed of a wall portion that protrudes forward from a position surrounding the locking receiving portion (claw portion) 34.

[0102] In the cover locking mechanism 28, when the cover 9 closes the upper part of the cover body 7, the hook 32 of the locking member 30 engages with the locking receiving part 34, thereby maintaining the state in which the cover 9 closes the upper part of the cover body 7.

[0103] Starting from this state, a pressing operation is performed on the second arm 30b side of the locking member 30 to overcome the force applied by the force-applying member 33, thereby releasing the locking state of the hook 32 relative to the locking receiving part 34. As a result, the cover 9, which is subjected to force by the force-applying member 27, can be rotated in the opening direction.

[0104] On the other hand, in the cover locking mechanism 28, when the cover 9 closes the upper part of the cover body 7, the annular stop 31 is hooked onto the stop receiving part 35, thereby preventing the cover 9 from rotating in the opening direction. Thus, in the cover locking mechanism 28, the cover 9 can be prevented from opening due to unnecessary operation of the locking member 30.

[0105] However, in the lidded container 100 with lid unit 1 of this embodiment, the inner circumferential surface of the aforementioned elastic sleeve portion 23c is smoothly and continuously provided from the lower surface of the fitting protrusion 23a downwards with the inner circumferential side open. In this case, no gap is formed from the lower surface of the fitting protrusion 23a to the inner circumferential surface of the elastic sleeve portion 23c, so beverages will not accumulate or solids will be trapped in the gap, thus ensuring hygiene. In addition, the water-stopping sealant 23 can be easily cleaned and dried, so dirt will not remain on the inner circumferential surface, thus ensuring hygiene.

[0106] Furthermore, in the lidded container 100 with lid unit 1 in this embodiment, for example, when carbonated beverages such as carbonated drinks, carbonated water, beer, and sparkling wine are contained in the container body 2, the pressure inside the sealed container body 2 increases due to carbonic acid gas.

[0107] At this time, the water-stopping sealant 23 is in a state where the lower surface of the elastic flange portion 23b contacts the surface of the entry side of the protrusion portion 6, and the outer peripheral surface of the elastic sleeve portion 23c contacts the surface of the top side of the protrusion portion 6, thereby becoming a state in which it is tightly attached to the protrusion portion 6 all around its circumference.

[0108] Furthermore, the sealing member 23 elastically deforms along the inlet side surface of the protrusion 6 via the elastic flange portion 23b, thereby causing the elastic sleeve portion 23c to elastically displace in the direction where its outer peripheral surface contacts the top side surface of the protrusion 6. As a result, the elastic flange portion 23b is lifted upward along the inlet side surface of the protrusion 6, and simultaneously, the elastic sleeve portion 23c expands in the diameter-enlarging direction, thereby being pressed against the top side surface of the protrusion 6.

[0109] In particular, when the pressure inside the container body 2 increases, the elastic sleeve portion 23c withstands the pressure and expands further in the expansion direction, thus being pressed more strongly against the top side of the protrusion portion 6.

[0110] Therefore, in the lidded container 100 with lid unit 1 of this embodiment, even when a carbonated beverage is contained within the container body 2, the sealing member 23 can be tightly attached to the protrusion 6, and the seal between the protrusion 6 (container body 2) and the opening forming member 12 (lid body 7) can be well maintained. Thus, it is possible to prevent carbonated gas or beverage from leaking out between the sealing member 23 and the protrusion 6, or for the sealing member 23 to roll up.

[0111] As described above, in the cover unit 1 of this embodiment, the aforementioned water-stopping sealant 23 has excellent cleanability and can maintain the sealing performance achieved by the water-stopping sealant 23 well. Therefore, in the covered container 100 of this embodiment, the aforementioned cover unit 1 is provided, thereby further improving the ease of use.

[0112] Furthermore, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

[0113] Specifically, in the aforementioned cover unit 1, the water-stopping sealant 23 is configured to be detachably mounted on the mouth-forming member 12 (cover body 7) by engaging the engaging recess 24, which is one engaging portion of the mouth-forming member 12, with the engaging protrusion 23a, which is the other engaging portion of the water-stopping sealant 23. However, the engaging portions of one and the other can also be configured in ways such as... Figure 6 as well as Figure 7 The structure is similar to that of cover units 1A and 1B shown.

[0114] Among them, Figure 6In the cover unit 1A shown, the water-stopping sealant 23 is installed on the mouth forming member 12 (cover body 7) in a removable manner by fitting a fitting protrusion 24a, which is a fitting part of the mouth forming member 12, and a fitting recess 23d, which is a fitting part of the water-stopping sealant 23.

[0115] On the other hand, Figure 7 In the cover unit 1B shown, it is configured such that in the above-mentioned Figure 6 Based on the structure of the fitting protrusion 24a and fitting recess 23d shown, an annular flange 24b that contacts the upper surface of the water-stopping sealant 23 installed on the mouth forming member 12 is also provided on the mouth forming member 12 (cover body 7).

[0116] Furthermore, the aforementioned cover unit 1 is configured to install the cover body 7 onto the container body 2 by screwing it in, but is not limited to such a configuration. For example, the cover unit 1 may also be configured to install the opening forming member 12 onto the container body 2 by screwing it in a state where the opening forming member 12 is inserted into the inside of the container body 2 from the upper opening 2d.

[0117] In this configuration, the cap body 7 can be installed on the container body 2 in a detachable manner by screwing the internal thread portion provided on the inner circumferential surface of the neck portion 2c with the external thread portion provided on the peripheral wall portion 12b of the mouth forming member 12 instead of the internal thread portion 10 and the external thread portion provided on the peripheral wall portion 12b of the mouth forming member 12.

[0118] Furthermore, the aforementioned cover unit 1 is configured such that the cover 9 is mounted to the cover body 7 in a manner that allows it to open and close freely via the hinge portion 8, but it is not limited to such a structure. For example, it may also be configured such that the cover body 7 directly opens and closes the upper opening 2d of the container body 2.

[0119] In this configuration, the cover body can be configured as an outer cover having an upper opening covering the container body and an inner plug that is inserted into the inside of the container body from the upper opening. The inner plug or the outer cover is screwed onto the cover body. Furthermore, the sealing member 23 can simply be configured to be installed on the outer periphery of the inner plug.

[0120] Furthermore, in the above embodiments, an example of applying the present invention is illustrated in a beverage container suitable for containing the aforementioned carbonated beverage within the container body 2, but the beverage (liquid) contained within the container body is not particularly limited. Additionally, in the above embodiments, an example of applying the present invention is illustrated in a beverage container having a cold-keeping (or heat-keeping) function due to the container body 2 having the aforementioned vacuum insulation structure, but the present invention can be widely applied to lidded containers comprising a container body and a lid unit that is detachably mounted to the container body.

Claims

1. A cover unit that is detachably mounted to a container body with an upper opening. The cover unit is characterized in that it has: A lid body that closes the upper opening of the container body; and A water-stopping sealant is installed on the cover body in a removable manner and seals the space between the container body and the cover body. The cap body has an annular fitting portion on the outer peripheral surface of the portion that is inserted into the inner side of the container body from the upper opening. The sealing and sealing component is composed of an annular elastic member. This elastic member abuts against a protruding portion that extends circumferentially from the inside of the container body in the direction of diameter contraction, when the cover body is installed on the container body. The water-stopping sealant includes: an annular fitting portion of the other party that fits into the fitting portion of the other party; an elastic flange portion that protrudes circumferentially from the outer periphery of the fitting portion of the other party in the expansion direction; and an elastic sleeve portion that protrudes downward circumferentially from between the fitting portion of the other party and the elastic flange portion. The water-stopping sealant is positioned such that the lower surface of the elastic flange contacts the inlet side of the protrusion, and the outer peripheral surface of the elastic sleeve contacts the top side of the protrusion. The inner circumferential surface of the elastic sleeve portion is continuously provided downward from the lower surface of the other fitting portion.

2. The cover unit according to claim 1, characterized in that, The water-stopping and sealing member elastically deforms along the inlet side of the protrusion through the elastic flange portion, causing the elastic sleeve portion to elastically displace in the direction in which the outer peripheral surface of the elastic sleeve portion contacts the top side surface of the protrusion portion.

3. The cover unit according to claim 1 or 2, characterized in that, The elastic sleeve portion has a shape that gradually expands in diameter downwards.

4. The cover unit according to claim 1 or 2, characterized in that, The elastic flange is located on the lower end side of the outer peripheral surface of the other fitting portion.

5. The cover unit according to claim 1 or 2, characterized in that, The fitting portion of one of the parts has a shape in which the width gradually increases from its bottom side toward the opening side. The other fitting portion has a shape in which the width gradually narrows from its base side toward its front side.

6. The cover unit according to claim 1 or 2, characterized in that, The elastic component is made of fluororubber.

7. The cover unit according to claim 1 or 2, characterized in that, The cap body is screwed onto the container body.

8. A container with a lid, characterized in that, have: The cover unit according to any one of claims 1 to 7, and The container body for mounting the cover unit.

9. The lidded container according to claim 8, characterized in that, The container body has a vacuum insulation structure.

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