Closures and beverage containers

Abstract

To provide a beverage container equipped with a plug body with a lid attached to a body through a connection member, preventing the plug body from being broken even when a user carries the connection member by hand.SOLUTION: A plug body 100 according to the present invention is provided with: (a) a body 101 having a spout part 120a; (b) a lid 140 detachably attached on the spout part; and (c) a connection member 300 connecting the lid to the body, wherein the connection member comprises a strap part 303, an annulus part 301 formed at one of end sides of the strap part, and a fixing part 302 formed at the other of the end sides of the strap part, the annulus part is fitted in a side wall 142b of the lid so that the lid freely rotates, and the fixing part is fixedly connected to the body.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a closure and to a beverage container equipped with the closure. [Background technology]

[0002] In the past, a capped container has been proposed that includes "a cap having a first retaining portion in the center of the top surface, a mouth portion that can be screwed onto the cap, a container body having a second retaining portion provided at the base of the mouth portion, and a flexible connecting member whose first connecting end is rotatably connected to the first retaining portion around the axis of the cap and whose second connecting end is connected to the second retaining portion in a position extending along a second imaginary plane that is aligned both in the direction of the axis and in a tangential direction about the axis" (see, for example, JP 2021-011303 A, etc.). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-011303 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, beverage containers have been used that are made of a stainless steel container and a stopper that is removably attached to the mouth of the container. It is possible to apply the above-mentioned technology to the stopper, but it is expected that a user will grab the flexible connecting member when carrying a beverage container with a stopper to which the above-mentioned technology is applied. In such a case, there is a high possibility that a large force will be applied to the first holding part or the first connecting end of the connecting member, causing damage to either or both of them.

[0005] The object of the present invention is to make it difficult for the stopper to be damaged even when a user carries a beverage container having a stopper with a lid attached to the body via a connecting material by holding the connecting material. [Means for solving the problem]

[0006] The plug according to the present invention comprises: A main body having a mouth portion and a side wall; A lid that is removably attached to the drinking spout; a connecting member that connects the lid to the main body, the connecting member has a strap portion, a ring-shaped portion formed on one end side of the strap portion, and a fixing portion formed on the other end side of the strap portion, the annular portion is fitted to a side wall of the lid so that the lid can rotate freely; A recess is formed in a side wall of the body, The fixing portion is fitted into the recess and fixedly connected to the main body. 、 The extension portion of the strap portion from the end of the fixed portion to the portion adjacent to the annular portion is rod-shaped when the lid is not attached to the spout portion, When the extension portion is perpendicular to a virtual line extending in the vertical direction, the adjacent portion is bent so that the end portion on the annular portion side faces downward. .

[0007] According to the above configuration, the annular portion is connected to the side wall of the lid so that the lid can rotate freely. Therefore, when a user carries a beverage container to which the stopper is attached by holding the connecting member, the weight of the beverage container can be supported by the annular portion. Therefore, the stopper is unlikely to be damaged even if a user carries the beverage container by holding the connecting member. According to the above configuration, the strap portion can be shaped so that the hand gripping the lid does not come into contact with the strap portion when attaching or detaching the lid from the spout portion or attaching the lid to the spout portion, and the length of the strap portion can be made relatively long to form a relatively large loop that can be used as a handle when attaching the lid. According to the above configuration, the lid can be moved sufficiently far from the spout portion when attaching or detaching the lid, which reduces the risk of the lid touching the user's face when drinking a beverage from the beverage container with the stopper attached, and saves the user the trouble of searching for the lid when trying to attach it to the spout portion.

[0008] In the plug according to the present invention, The above Extension site is considered to be of uniform thickness. There are It is preferable that:

[0009] According to the above configuration, the lid can be kept far enough away from the drinking spout when it is attached or detached, reducing the risk of the lid touching the user's face, etc. when drinking a beverage from a beverage container with the stopper attached, and also eliminating the need to search for the lid when trying to attach it to the drinking spout.

[0010] In the plug according to the present invention, It is preferable that the lid has a plug that is removably attached inside the drinking spout, and is attached to the drinking spout via the plug.

[0011] According to the above configuration, the pressure resistance of the lid can be improved, and furthermore, it can be used with beverages such as carbonated beverages that generate gas and cause pressure inside the container to increase.

[0012] In the plug according to the present invention, It is preferable that a positioning portion that defines a fixing position of the fixing portion is formed in the recess.

[0013] In the plug according to the present invention, It is preferable that the positioning portion fixes the fixing portion so as not to rotate.

[0014] The beverage container according to the present invention comprises: The plug as described above, and a bottomed cylindrical container into which the plug is attached.

[0015] According to the above configuration, the annular portion is connected to the side wall of the lid so that the lid can rotate freely. Therefore, when a user carries the beverage container by holding the connecting member, the weight of the beverage container can be supported by the annular portion. Therefore, even if a user carries the beverage container by holding the connecting member, the stopper is unlikely to be damaged. [Brief description of the drawings]

[0016] [Figure 1] Fig. 2 is a perspective view of a beverage container according to an embodiment of the present invention, in which an outlet port of a cylindrical wall portion is closed by a plug. [Diagram 2] Fig. 2 is a perspective view of a beverage container according to an embodiment of the present invention, in which the outlet of the cylindrical wall is not blocked by a plug. [Diagram 3] 1 is a plan view of a beverage container according to an embodiment of the present invention, in which an outlet port of a cylindrical wall portion is closed by a plug. [Figure 4] This is a cross-sectional view taken along the line AA in Fig. 3. Note that in this drawing, the vacuum double container is partially omitted, and the pressure adjustment mechanism is shown in an inoperative state. [Diagram 5] This is a cross-sectional view taken along line AA in Fig. 3 when the outlet of the cylindrical wall portion is not blocked by a plug. Note that in this figure, the vacuum double container is partially omitted, and the pressure adjustment mechanism is not in operation. [Figure 6] 1 is an enlarged cross-sectional view of the pressure adjustment mechanism according to an embodiment of the present invention, showing a state in which the pressure adjustment mechanism is in operation. [Figure 7] FIG. 2 is a diagram showing an example of a beverage container according to an embodiment of the present invention when it is turned over. In this diagram, the beverage container is cut at a height position slightly below the step of the inner tube in the state of FIG. [Figure 8] FIG. 2 is a bottom perspective view of a plug according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] <Configuration of beverage container according to embodiment of the present invention> As shown in Figures 1, 2, 4 and 5, the beverage container 10 according to the embodiment of the present invention is composed of a vacuum double container 200, a plug 100 and a second packing PK2. These components will be described in detail below. The beverage container 10 is assembled by fitting the plug 100 to the vacuum double container 200.

[0018] 1. Vacuum double container The vacuum double container 200 is a container made of metal such as stainless steel, and is mainly formed of an inner cylinder 210 and an outer cylinder 220, as shown in Figures 1, 2, 4, and 5. Specifically, as shown in Figures 4 to 6, the upper end of a tip wall portion 214 (described later) of the inner cylinder 210 and the upper end of a tip wall portion 224 (described later) of the outer cylinder 220 are joined together so that a heat insulating space is formed between the inner cylinder 210 and the outer cylinder 220, and then the heat insulating space is put into a vacuum state, thereby forming the vacuum double container 200.

[0019] As shown in Figs. 4 to 6, the inner cylinder 210 is mainly formed of an inner cylinder side wall 211, an inner cylinder bottom wall (not shown), a step 213, a tip wall 214, and a female screw 215. The inner cylinder side wall 211 has a substantially cylindrical shape. The inner cylinder bottom wall has a central portion that rises in a spherical shape toward the opening side (upper side), and a corner portion that has a concave arc shape. The inner cylinder bottom wall is formed on the lower side of the inner cylinder side wall 211. The step 213 is a truncated conical cylindrical portion (frustum conical cylindrical portion) and is formed between the inner cylinder side wall 211 and the tip wall 214 as shown in Figs. 4, 5, and 7, and connects the inner cylinder side wall 211 and the tip wall 214. The tip wall 214 has a generally cylindrical shape and extends upward from the upper end of the step 213 as shown in Figures 4 to 6. The female thread 215 is formed on the inner circumferential surface of the tip wall 214 as shown in Figures 4 to 6, and can be screwed into a male thread 120h (described later) of the cylindrical wall 120 of the plug 100.

[0020] As shown in Figs. 1, 2, 4 to 6, the outer cylinder 220 is mainly formed of an outer cylinder side wall 221, an outer cylinder bottom wall 222, a step 223, and a tip wall 224. The outer cylinder side wall 221 has a substantially cylindrical shape, similar to the inner cylinder side wall 211. The outer cylinder bottom wall 222 has a substantially disk shape, and is joined to the lower end portion of the outer cylinder side wall 221, as shown in Figs. 1 and 2. The step 223 is a truncated cone cylinder shape (frustum cone cylinder shape), and is formed between the outer cylinder side wall 221 and the tip wall 214, as shown in Figs. 4 to 6, and connects the outer cylinder side wall 221 and the tip wall 214. The tip wall 214 has a substantially cylindrical shape, and extends upward from the upper end of the step 223, as shown in Figs. 4 to 6. As shown in FIGS. 4 to 6, in the recess formed by the step portion 223 and the tip wall portion 224, a second packing PK2 (described later) is attached.

[0021] 2.Bung body 1 to 5, the plug 100 is mainly composed of a main body 101, a plug 140, and a strap 300. These components will be described in detail below.

[0022] (1) Main unit As shown in Figures 1 to 6, the main body 101 is mainly composed of a shoulder member 110, a cylindrical wall portion 120, and a pressure adjustment mechanism 130. These components will be described in detail below. Note that the main body 101 is connected to a plug 140 by a strap 300 as shown in Figures 1 to 5.

[0023] (1-1) Shoulder member 1 to 6, the shoulder member 110 is a member made of resin or the like, covers the pressure adjustment mechanism 130, and is mainly composed of an outer shoulder member 111 and an inner shoulder member 112. These components will be described in detail below.

[0024] (1-1-1) Outer shoulder member As shown in Figs. 1 to 6, the outer shoulder member 111 is mainly formed of a top wall portion 111a, a step portion 111b, a side wall portion 111c, and a claw portion 111d. The top wall portion 111a is a substantially disk-shaped portion constituting the upper wall of the outer shoulder member 111, and as shown in Figs. 2 and 4 to 6, a circular opening 111o is formed in the center. As shown in Fig. 4, the upper side wall portion 120a of the cylindrical wall portion 120 is inserted into this opening 111o. As shown in Figs. 1 to 6, the step portion 111b is formed between the top wall portion 111a and the side wall portion 111c, and connects the top wall portion 111a and the side wall portion 111c. 1, 2, and 4 to 6, the side wall portion 111c has a generally cylindrical shape and extends downward from the lower end of the step portion 111b to the upper end position of the recess 112p of the side wall portion 112c of the inner shoulder member 112. As shown in Figures 4 to 6, the claw portion 111d is a protrusion that extends downward from the inner edge portion of the top wall portion 111a (i.e., the circumferential portion of the opening 111o) and cooperates with the top wall portion 112a (described later) of the inner shoulder member 112 to sandwich a first packing PK1 (described later).

[0025] (1-1-2) Inner shoulder member As shown in Figs. 4 to 6, the inner shoulder member 112 is mainly formed of a top wall portion 112a, a step portion 112b, and a side wall portion 112c. The top wall portion 112a is a substantially disk-shaped portion constituting the upper wall of the inner shoulder member 112, and as shown in Figs. 4 to 6, a circular opening 112o is formed in the center portion. As shown in Fig. 4, the upper side wall portion 120a of the cylindrical wall portion 120 is inserted into this opening 112o. As shown in Figs. 4 to 6, the diameter of the opening 112o is slightly larger than the diameter of the opening 111o of the outer shoulder member 111, and the area of ​​the opening 112o in a planar perspective overlaps with the entire area of ​​the opening 111o of the outer shoulder member 111. In addition, the center of the opening 112o in a planar perspective is located at the same position as the center of the opening 111o of the outer shoulder member 111. As shown in Figs. 4 to 6, the step portion 112b is formed between the top wall portion 112a and the side wall portion 112c, and connects the top wall portion 112a and the side wall portion 112c. The side wall portion 112c has a substantially cylindrical shape, and extends downward from the lower end of the step portion 112b, as shown in Figs. 4 to 6. As shown in Figs. 4 to 6, an annular recess 112p is formed from the lower portion to the middle portion of the side wall portion 112c, recessed inward. A positioning portion (not shown) is provided on the outer circumferential surface of the recess 112p. The positioning portion prevents the large circular portion 302 (described later) of the strap 300 from rotating with respect to the inner shoulder member 112 when the large circular portion 302 of the strap 300 is fitted into the recess 112p.

[0026] (1-2) Cylindrical wall The cylindrical wall portion 120 is a member formed of resin or the like, and as shown in Fig. 2, Fig. 4 to Fig. 6, a part of it protrudes upward through the opening 111o of the outer shoulder member 111 and the opening 112o of the inner shoulder member 112, and is mainly formed of an upper side wall portion 120a, a lower side wall portion 120b, a flange portion 120c, an upper housing wall portion 120d, a lower housing wall portion 120e, a front housing wall portion 120f, a female thread portion 120g, a male thread portion 120h, and a third packing mounting wall portion 120i. Also, as shown in Fig. 4 to Fig. 6, a first packing PK1 and a third packing PK3 are attached to this cylindrical wall portion 120. The upper side wall portion 120a has a substantially cylindrical shape. As shown in Figs. 2, 4 and 5, a female screw portion 120g is formed on the inner peripheral surface of the upper sidewall portion 120a from the lower part to the middle part. As shown in Figs. 2 and 5, the internal space SP1 of the upper sidewall portion 120a functions as a beverage passage together with the internal space SP2 (described later), and the upper opening of the upper sidewall portion 120a serves as a beverage outlet MO, so that the upper sidewall portion 120a functions as a drinking spout. The lower sidewall portion 120b has a substantially cylindrical shape. As shown in Figs. 4 and 5, a male screw portion 120h is formed on the lower sidewall portion 120b from the lower part to the middle part of the outer peripheral surface. As shown in Figs. 4 and 6, a notch is formed in the upper end portion on the rear side of the lower sidewall portion 120b, and the upper storage wall portion 120d is disposed above the notch to form an opening OP3. As shown in Figs. 4 to 6, the flange 120c extends from the boundary between the upper sidewall 120a and the lower sidewall 120b toward the outside and inside (the cylinder axis AY of the upper sidewall 120a) and has a substantially annular shape. The outer portion of the flange 120c supports the top wall 112a of the inner shoulder member 112, and the inner portion functions as a sealing portion for the plug 140. The cylinder axis AY of the upper sidewall 120a is an imaginary line extending in the vertical direction from the center of the upper sidewall 120a in a plan view (see Figs. 3 to 5). The upper storage wall 120d has a substantially disk shape and is formed above the rear of the lower sidewall 120b as shown in Figs. 4 to 6. An opening OP1 is formed in the center of the upper storage wall 120d as shown in Figs. 4 to 6.The lower storage wall 120e has a substantially disk shape, and is formed below the rear of the lower side wall 120b, as shown in Figs. 4 to 6. An opening OP2 is formed in the center of the lower storage wall 120e, as shown in Figs. 4 to 6. The front storage wall 120f has a partially circular shape in a plan view, and extends upward from the front edge of the lower storage wall 120e, as shown in Figs. 4 to 6. Here, as shown in Figs. 4 to 6, a cylindrical portion having an internal space SP3 is formed by the lower side wall 120b, the upper storage wall 120d, the lower storage wall 120e, and the front storage wall 120f. This internal space SP3 extends in the up-down direction, as shown in Figs. 4 to 6. In addition, a pressure adjustment mechanism 130 (described later) is disposed in the internal space SP3, as shown in Figs. 4 to 6. The female screw portion 120g can be screwed into the male screw portion 143b (described later) of the plug 140, and is formed from the lower part to the middle part of the inner circumferential surface of the upper sidewall portion 120a, as described above. That is, when the female screw portion 120g is screwed into the male screw portion 143b of the plug 140, the female screw portion 120g is cut to a position where the fifth packing PK5 of the plug 140 and the inner part of the flange portion 120c abut (see FIG. 4). As described above, the male screw portion 120h is formed from the lower part to the middle part of the outer circumferential surface of the lower sidewall portion 120b, and can be screwed into the female screw portion 215 of the inner cylinder 210. The third packing mounting wall portion 120i has a substantially cylindrical shape, and is formed on the lower side of the lower sidewall portion 120b, as shown in FIGS. 4 to 6. As shown in Fig. 4 to Fig. 6, an internal space SP2 is formed by the lower side wall 120b, the lower housing wall 120e, the front housing wall 120f, and the third packing mounting wall 120i. The internal space SP2 functions as a beverage passage together with the internal space SP1 of the upper side wall 120a, and also functions as a space for retaining air above the beverage when the stopper 100 is attached to the vacuum double container 200 and a beverage is poured into the vacuum double container 200. The first packing PK1 is an annular member made of an elastic material such as rubber or elastomer, and is attached to the lower part of the outer circumferential surface of the upper side wall 120a of the cylindrical wall 120 as shown in Fig. 4 to Fig. 6.As described above, the first packing PK1 is sandwiched between the claw portion 111d of the outer shoulder member 111 of the shoulder member 110 and the top wall portion 112a of the inner shoulder member 112 of the shoulder member 110. Here, the first packing PK1 serves to close the gap between the outer shoulder member 111 of the shoulder member 110 and the upper side wall portion 120a of the cylindrical wall portion 120, and the gap between the inner shoulder member 112 of the shoulder member 110 and the upper side wall portion 120a of the cylindrical wall portion 120. The third packing PK3 is an annular member made of an elastic material such as rubber or elastomer, and is attached to the outer circumferential surface of the third packing attachment wall portion 120i as shown in Figs. 4 to 7. Here, when the male thread portion 120h is screwed into the female thread portion 215 of the inner cylinder 210 of the vacuum double container 200, the third packing PK3 abuts against the upper end portion of the step portion 213 of the inner cylinder 210, as shown in Figures 4 and 5. In this case, the third packing PK3 plays a role of closing the gap between the cylindrical wall portion 120 and the inner cylinder 210.

[0027] (1-3) Pressure adjustment mechanism The pressure adjustment mechanism 130 is a member for adjusting the internal pressure of the beverage container 10, and as shown in Figures 4 to 6, is disposed in the internal space SP3 of the cylindrical wall portion 120, and is mainly composed of a valve body 131, a biasing member 132, and a fourth packing PK4. These components will be described in detail below.

[0028] (1-3-1) Valve body As shown in Figs. 4 to 6, the valve body 131 is mainly formed of a valve rod 131a and a valve portion 131b. As shown in Figs. 4 to 6, the valve rod 131a is a rod member having a generally cylindrical shape extending in the vertical direction. Here, as shown in Figs. 4 to 6, the valve rod 131a is inserted into the inside of the biasing member 132, and the upper end of the valve rod 131a is inserted into an opening OP1 of the upper housing wall portion 120d of the cylindrical wall portion 120. Meanwhile, the lower end of the valve rod 131a is inserted into an opening OP2 of the lower housing wall portion 120e of the cylindrical wall portion 120. Note that a small gap is formed between the lower end of the valve rod 131a and the opening OP2. As shown in Figs. 4 to 6, the valve portion 131b is a substantially cylindrical portion formed at the lower end of the valve rod 131a, and is biased downward (i.e., toward the opening OP2) by the biasing member 132 (as a result, the valve rod 131a is also biased downward by the biasing member 132). In addition, in a plan view, the diameter of the valve portion 131b is designed to be larger than the outer diameter of the fourth packing PK4. In addition, in the internal space SP3, small gaps are formed between the valve portion 131b and the lower side wall portion 120b and the front housing wall portion 120f of the cylindrical wall portion 120.

[0029] (1-3-2) Urging member The biasing member 132 is a coil spring for biasing the valve body 131 downward. As shown in Figs. 4 to 6, one end of the biasing member 132 is fitted into the upper housing wall portion 120d of the cylindrical wall portion 120, and the other end of the biasing member 132 is in contact with the valve portion 131b of the valve body 131.

[0030] (1-3-3) Fourth packing The fourth packing PK4 is an annular member made of an elastic material such as rubber or elastomer. As shown in Figs. 4 to 6, the fourth packing PK4 is attached to the lower surface of the valve portion 131b of the valve body 131 so that the lower portion of the valve stem 131a of the valve body 131 passes through the central opening of the fourth packing PK4. Here, as shown in Fig. 4, when the valve body 131 is urged downward by the urging member 132, the fourth packing PK4 abuts against the upper surface of the lower housing wall portion 120e of the cylindrical wall portion 120, and closes the opening OP2 of the lower housing wall portion 120e of the cylindrical wall portion 120 together with the valve body 131.

[0031] In addition, the plug 100 according to the embodiment of the present invention is designed so that the mass of the front part is larger than the mass of the rear part. Specifically, this design is realized by making the mass of the upper side wall part 120a of the cylindrical wall part 120 larger than the mass of the pressure adjustment mechanism 130. With this design, when the plug 100 is attached to the vacuum double container 200, in the beverage container 10, the mass of the front side of the cylinder axis line AX (see Figs. 3 to 5, an imaginary line extending in the vertical direction from the center of the inner cylinder bottom wall part of the inner cylinder 210 and the outer cylinder bottom wall part 222 of the outer cylinder 220, parallel to the cylinder axis line AY of the upper side wall part 120a of the cylindrical wall part 120) of the vacuum double container 200 is larger than the mass of the rear side of the cylinder axis line AX. In other words, when the plug 100 is attached to the vacuum double container 200, if the beverage container 10 tilts or rolls over by a certain amount or more, the pressure adjustment mechanism 130 will be located above the cylindrical wall part 120. At this time, when a beverage is poured into the vacuum double container 200, the beverage flows into the internal space SP2, and the air stored in the internal space SP2 moves toward the pressure adjustment mechanism 130. As shown in Figures 4 and 5, the pressure adjustment mechanism 130 is located on the opposite side of the cylinder axis AX of the vacuum double container 200 to a portion other than the rear portion of the upper side wall portion 120a of the cylindrical wall portion 120.

[0032] (2) Stopper The plug 140 is a member that is attached to the cylindrical wall portion 120 to close the outlet MO of the upper side wall portion 120a of the cylindrical wall portion 120, and as shown in Figs. 1 to 5 and 8, is mainly composed of an upper cover member 141, a lower cover member 142, a plug main body portion 143, and a rotating ring 144. These components will be described in detail below. As shown in Figs. 2 and 5, when the plug 140 is not closing the outlet MO of the upper side wall portion 120a of the cylindrical wall portion 120, it can be positioned behind the shoulder member 110 (behind the vacuum double enclosure 200) by the strap 300.

[0033] (2-1) Upper cover member The upper cover member 141 is a member formed of resin or the like, and is mainly formed of a top wall portion 141a, a side wall portion 141b, a claw portion 141c, and a handle portion 141d, as shown in Figs. 1 to 5 and 8. The top wall portion 141a is substantially disc-shaped, as shown in Figs. 1 to 5. The side wall portion 141b is substantially cylindrical, as shown in Figs. 1, 2, 4, 5, and 8, and extends downward from the outer edge of the top wall portion 141a. The claw portion 141c extends inward from the middle portion of the inner circumferential surface of the side wall portion 141b, as shown in Figs. 4 and 5, and is fitted into a recess formed in the middle portion of the outer circumferential surface of the side wall portion 142b of the lower cover member 142. The handle portion 141d is utilized by a user when turning the upper cover member 141, and as shown in Figures 1 to 3 and 8, extends outward from the outer circumferential surface of the side wall portion 141b on a diameter line passing through the center of the top wall portion 141a.

[0034] (2-2) Lower cover member The lower cover member 142 is a member formed of resin or the like, and is mainly formed of a top wall portion 142a and a side wall portion 142b as shown in Figs. 4 and 5. The top wall portion 142a is substantially disk-shaped as shown in Figs. 4 and 5. As shown in Figs. 4 and 5, a recess 142o recessed downward is formed in the center of the top wall portion 142a, and an opening is formed in the center of this recess 142o. Then, as shown in Figs. 4 and 5, a screw SC is passed through this opening and an insertion hole (described later) of the plug main body portion 143, thereby fastening the lower cover member 142 and the plug main body portion 143. As shown in Figs. 4, 5, and 8, the side wall portion 141b is substantially cylindrical and extends downward from the outer edge of the top wall portion 142a. As described above, a recess is formed in the middle of the outer circumferential surface of the side wall portion 142b, and the claw portion 141c of the upper cover member 141 is fitted into the recess.

[0035] (2-3) Plug body The plug body 143 is a member that is removably attached to the internal space SP1 of the cylindrical wall 120, and is formed of a body 143a, a male screw 143b, and a fifth packing PK5, as shown in Figs. 4, 5, and 8. The body 143a is made of resin or the like, and is substantially cylindrical, as shown in Figs. 2, 4, 5, and 8. As shown in Figs. 4 and 5, the body 143a has an insertion hole that extends downward from the center of the upper wall of the body 143a. As described above, the lower cover member 142 and the plug body 143 are fastened together by passing a screw SC through the insertion hole and the opening of the top wall 142a of the lower cover member 142. The male screw 143b is made of resin or the like, and can be screwed into the female screw 120g of the cylindrical wall 120, as described above. The male screw portion 143b is formed in the middle of the outer circumferential surface of the main body portion 143a, as shown in Figs. 4, 5, and 8. That is, the male screw portion 143b is not cut to a position where the fifth packing PK5 and the inner part of the flange portion 120c of the cylindrical wall portion 120 come into contact with each other when the male screw portion 143b is screwed into the female screw portion 120g of the cylindrical wall portion 120 (see Fig. 4). The fifth packing PK5 is an annular member made of an elastic material such as rubber or elastomer, and is attached to the lower end of the main body portion 143a, as shown in Figs. 2, 4, 5, 7, and 8. Here, the fifth packing PK5 plays a role of closing the gap between the main body portion 143a and the cylindrical wall portion 120 by coming into contact with the inner part of the flange portion 120c of the cylindrical wall portion 120 when the male screw portion 143b is screwed into the female screw portion 120g of the cylindrical wall portion 120, as shown in Fig. 4. 4, the contact position between the fifth packing PK5 and the inner portion of the flange portion 120c of the cylindrical wall portion 120 is located inside and below the screw engagement position between the male thread portion 143b and the female thread portion 120g of the cylindrical wall portion 120.

[0036] Furthermore, in the beverage container 10 according to the embodiment of the present invention, the outer diameter of the fifth gasket PK5 of the plug body 143 of the plug 140 is smaller than the inner diameter of the upper end of the upper side wall portion 120a of the cylindrical wall portion 120 and the inner diameter of the upper end of the step portion 213 of the inner tube 210 (see Figures 4 and 5).

[0037] (2-4) Rotating ring The rotating ring 144 has a substantially circular ring shape, and is attached to the lower end of the outer circumferential surface of the side wall portion 142b of the lower cover member 142 as shown in Figs. 4, 5, and 8, and is rotatable with respect to the side wall portion 142b of the lower cover member 142. That is, when the upper cover member 141 is turned by the user to release the blocked state of the outlet MO of the upper side wall portion 120a of the cylindrical wall portion 120 by the plug 140 (note that the lower cover member 142 and the plug main body portion 143 also turn following the upper cover member 141), the rotating ring 144 does not rotate together with the upper cover member 141, the lower cover member 142, and the plug main body portion 143. Also, as shown in Figs. 4 and 5, a small circular ring portion 301 (described later) of the strap 300 is attached to the outer circumferential surface of the rotating ring 144.

[0038] (3) Strap The strap 300 is a member that can connect the plug 140 to the main body 101 even after the plug 140 releases the blocking state of the outlet MO of the upper side wall portion 120a of the cylindrical wall portion 120 (i.e., even after the plug 140 is removed from the cylindrical wall portion 120), and is made of an elastic material, a flexible material, or a deformable material such as rubber or elastomer. As shown in Figs. 1 to 5, the strap 300 is mainly made up of a small circular ring portion 301, a large circular ring portion 302, and a bridging portion 303. As shown in Figs. 1 to 5, the small circular ring portion 301 has a substantially circular ring shape, is formed on one end side of the bridging portion 303, and is attached to the outer circumferential surface of the rotating ring 144 of the plug 140 (in other words, is fitted into the side wall portion 142b of the lower cover member 142 of the plug 140 via the rotating ring 144 of the plug 140). As a result, the small annular portion 301 becomes rotatable together with the rotating ring 144 with respect to the side wall portion 142b of the lower cover member 142 of the plug 140. The large annular portion 302, as shown in Figs. 1, 2, and 4 to 6, has a generally annular shape with a height and diameter larger than those of the small annular portion 301, is formed on the other end side of the bridging portion 303, and is fitted into the recess 112p of the inner shoulder member 112 of the shoulder member 110. At this time, as shown in Figs. 1, 2, 4, and 5, the boundary portion between the large annular portion 302 and the bridging portion 303 is located on the rear side of the inner shoulder member 112 of the shoulder member 110, and the large annular portion 302 is not rotatable with respect to the inner shoulder member 112 of the shoulder member 110. As shown in Figs. 1 to 5, the bridge portion 303 is for connecting the small annular portion 301 and the large annular portion 302, and is formed of a bent portion 303a and a uniform thickness portion 303b. As shown in Figs. 1 to 5, the bent portion 303a is a portion of the bridge portion 303 formed in the vicinity of the small annular portion 301. As shown in Figs. 1 and 4, when the plug 140 is attached to the cylindrical wall portion 120, the bent portion 303a is bent (curved, inflected) so that the end portion on the uniform thickness portion 303b side faces upward. In other words, as shown in Figs. 2 and 5, when the uniform thickness portion 303b is perpendicular to the cylinder axis AX of the vacuum double container 200 in a side view, the bent portion 303a is bent (curved, inflected) so that the end portion on the small annular portion 301 side faces downward.As shown in Figs. 1 to 5 and 7, uniform thickness portion 303b is a portion of bridge portion 303 formed from the end of large annular portion 302 to bent portion 303a, and is designed to have a constant thickness. As shown in Figs. 2 and 5, when plug 140 is not attached to cylindrical wall portion 120, uniform thickness portion 303b is rod-shaped (i.e., linear or nearly linear in side view) and perpendicular to cylinder axis AX of vacuum double container 200 in side view. As shown in Figs. 1 and 4, when plug 140 is attached to cylindrical wall portion 120, bent portion 303a is not deformed, but uniform thickness portion 303b is deformed into a substantially arc shape with almost no twisting in the left-right direction so that the upper end position of uniform thickness portion 303b is higher than the height position of small annular portion 301. At this time, since the space SP5 is formed by the bridge portion 303 (see FIGS. 1 and 4), the bridge portion 303 also serves as a handle for easy carrying.

[0039] If the strap 300 is not present on the beverage container 10, when the stopper 100 is attached to the vacuum double container 200 and the beverage container 10 tilts or rolls over a certain amount, the pressure adjustment mechanism 130 may temporarily come completely to the bottom depending on the manner of tilt or roll (i.e., the distance between the pressure adjustment mechanism 130 and the surface SF (see FIG. 7) may temporarily be at its smallest). However, by having the strap 300 on the beverage container 10, it is possible to reduce the pressure adjustment mechanism 130 coming completely to the bottom (i.e., the distance between the pressure adjustment mechanism 130 and the surface SF may temporarily be at its smallest), as shown in FIG. 7.

[0040] 3. Second packing The second packing PK2 is an annular member made of an elastic material such as rubber or elastomer, and is attached to the recess formed by the step portion 223 of the outer cylinder 220 and the tip wall portion 224 of the outer cylinder 220 as described above. Note that, here, as shown in Figs. 4 to 6, when the male thread portion 120h of the cylindrical wall portion 120 is screwed with the female thread portion 215 of the inner cylinder 210, the second packing PK2 abuts against the inner shoulder member 112 of the shoulder member 110. In this case, the second packing PK2 plays a role of closing the gap between the inner shoulder member 112 of the shoulder member 110 and the outer cylinder 220.

[0041] <How to use the plug and how it works> First, a desired beverage is poured into the vacuum double container 200. Next, the male thread 120h of the cylindrical wall 120 of the stopper 100 is screwed into the female thread 215 of the vacuum double container 200, and then the male thread 143b of the stopper 140 of the stopper 100 is screwed into the female thread 120g of the cylindrical wall 120 of the stopper 100 to complete the beverage container 10 (see Figs. 1 and 4). Alternatively, the male thread 143b of the stopper 140 of the stopper 100 is screwed into the female thread 120g of the cylindrical wall 120 of the stopper 100, and then the male thread 120h of the cylindrical wall 120 of the stopper 100 is screwed into the female thread 215 of the vacuum double container 200 to complete the beverage container 10. At this time, as shown in FIG. 4, the third packing PK3 abuts against the upper end of the step portion 213 of the inner cylinder 210 of the vacuum double container 200, and the fifth packing PK5 abuts against the inner portion of the flange portion 120c of the cylindrical wall portion 120 of the plug 100. This keeps the vacuum double container 200 and the plug 100 watertight. Also, as shown in FIG. 4, air is trapped in the internal space SP2 of the cylindrical wall portion 120. When the user drinks the beverage in the beverage container 10, the user releases the screwed state of the female screw portion 120g of the cylindrical wall portion 120 of the plug 100 and the male screw portion 143b of the plug 140 of the plug 100. At this time, the gas in the beverage container 10 flows not only upward but also into the screw root space SP4. The user then grasps the vacuum double container 200, lifts the beverage container 10, brings the cylindrical wall portion 120 of the stopper 100 to his / her mouth, and drinks the beverage in the beverage container 10. In this case, the beverage in the beverage container 10 flows into the user's mouth through the internal space SP2 and internal space SP1 of the cylindrical wall portion 120. After the user has finished drinking the beverage in the beverage container 10, the user screws the male thread portion 143b of the stopper 140 of the stopper 100 into the female thread portion 120g of the cylindrical wall portion 120 of the stopper 100.

[0042] Next, the operation of the pressure adjustment mechanism 130 of the stopper 100 when the internal pressure of the beverage container 10 becomes high in a state where the beverage in the beverage container 10 is a sparkling beverage (e.g., carbonated beverage, alcoholic beverage, etc.), the male thread 120h of the cylindrical wall 120 of the stopper 100 is screwed with the female thread 215 of the vacuum double container 200, and the male thread 143b of the stopper 140 of the stopper 100 is screwed with the female thread 120g of the cylindrical wall 120 of the stopper 100 (see Figs. 1 and 4) will be described. First, when the internal pressure in the beverage container 10 is not high, as shown in Fig. 4, in the pressure adjustment mechanism 130 of the stopper 100, the biasing member 132 biases the valve body 131 and the fourth packing PK4 downward, and the valve body 131 and the fourth packing PK4 close the opening OP2 of the cylindrical wall 120 of the stopper 100. Then, when the internal pressure of the beverage container 10 increases due to the evaporation of a substance (e.g., carbon dioxide, etc.) dissolved in the drinking water in the beverage container 10 into gas, the valve body 131 and the fourth packing PK4 in the pressure adjustment mechanism 130 of the plug 100 move upward against the biasing force of the biasing member 132, as shown in Fig. 6, and the blocked state of the opening OP2 of the cylindrical wall portion 120 of the plug 100 is released. Then, as shown by the thick arrow in Fig. 6, the gas is discharged through the opening OP2 of the cylindrical wall portion 120 of the plug 100, the internal space SP3, and the opening OP3 of the cylindrical wall portion 120 of the plug 100. Then, when the internal pressure of the beverage container 10 returns to the original state, the valve body 131 and the fourth packing PK4 are biased downward by the biasing member 132 to block the opening OP2 of the cylindrical wall portion 120 of the plug 100 again. When gas is discharged through the opening OP2 of the cylindrical wall portion 120 of the stopper 100, the internal space SP3, and the opening OP3 of the cylindrical wall portion 120 of the stopper 100, bubbles, etc. may also pass through the opening OP2 of the cylindrical wall portion 120 of the stopper 100, but the bubbles, etc. are trapped by the internal space SP3. Even if bubbles, etc. are discharged through the opening OP2 of the cylindrical wall portion 120 of the stopper 100, the internal space SP3, and the opening OP3 of the cylindrical wall portion 120 of the stopper 100, the bubbles, etc. are stored in the beverage container 10 by the first packing PK1 and the second packing PK2.

[0043] <Features of the plug according to the embodiment of the present invention> (1) In the plug 100 according to the embodiment of the present invention, the strap 300 is formed from an elastic, flexible, or deformable material such as rubber or elastomer. This makes it easy to attach the strap 300 to the main body 101 and the plug 140, or to detach the strap 300 from the main body 101 and the plug 140, thereby improving ease of maintenance.

[0044] (2) In the stopper 100 according to the embodiment of the present invention, the strap 300 is formed of a small annular portion 301, a large annular portion 302, and a bridging portion 303. Therefore, in this stopper 100, the bridging portion 303 of the strap 300 can function as a handle with a simple structure, and it is possible to eliminate the need for a beverage container storage member such as a pouch when carrying the beverage container 10. Furthermore, in this stopper 100, the design of the strap 300 can be improved.

[0045] (3) In the plug 100 according to the embodiment of the present invention, the small annular portion 301 of the strap 300 is rotatable together with the rotating ring 144 relative to the side wall portion 142b of the lower cover member 142 of the plug 140. In addition, the large annular portion 302 of the strap 300 is made non-rotatable relative to the inner shoulder member 112 of the shoulder member 110. Therefore, in this plug 100, when a user carries the beverage container 10 by holding the bridging portion 303 of the strap 300, the weight of the beverage container 10 can be supported by the small annular portion 301 of the strap 300. Therefore, this plug 100 is not easily damaged even if a user carries the beverage container 10 by holding the bridging portion 303 of the strap 300.

[0046] (4) In the plug 100 according to the embodiment of the present invention, when the plug 140 is attached to the cylindrical wall 120, the bent portion 303a of the bridge portion 303 of the strap 300 is bent (curved, inflected) so that the end of the bridge portion 303 of the strap 300 on the uniform thickness portion 303b side faces upward. Therefore, in this plug 100, when the plug 140 is detached from the cylindrical wall 120 or when the plug 140 is attached to the cylindrical wall 120, the bridge portion 303 of the strap 300 can be shaped so that the hand gripping the plug 140 does not come into contact with the bridge portion 303 of the strap 300, and by making the bridge portion 303 of the strap 300 relatively long, a relatively large loop that can be used as a handle when the plug 140 is attached can be formed. In addition, in this plug 100, when the plug 140 is attached to the cylindrical wall 120, the bent portion 303a of the bridge portion 303 of the strap 300 is not deformed. Therefore, in this plug body 100, when the plug 140 is attached to the cylindrical wall portion 120, it is possible to prevent as much as possible the plug main body portion 143 of the plug 140 from being inserted into the internal space SP1 of the cylindrical wall portion 120 in a tilted state, thereby preventing as much as possible the malfunction of the male thread portion 143b of the plug 140 and the female thread portion 120g of the cylindrical wall portion 120 from being screwed together properly.

[0047] (5) In the plug 100 according to the embodiment of the present invention, the uniform thickness portion 303b of the bridging portion 303 of the strap 300 is designed to have a constant thickness. In addition, the uniform thickness portion 303b of the bridging portion 303 of the strap 300 becomes rod-shaped when the plug 140 is not attached to the cylindrical wall portion 120. Therefore, in this plug 100, when the plug 140 is detached from the cylindrical wall portion 120, the plug 140 can be sufficiently far from the cylindrical wall portion 120, which reduces the risk that the plug 140 will touch the user's face when drinking the beverage in the beverage container 10, and also saves the trouble of searching for the plug 140 when trying to attach the plug 140 to the cylindrical wall portion 120. In addition, in this plug 100, the uniform thickness portion 303b of the bridging portion 303 of the strap 300 is hardly twisted in the left-right direction when the plug 140 is attached to the cylindrical wall portion 120. Therefore, in this plug 100, the plug 140 can be easily attached to the cylindrical wall portion 120.

[0048] (6) In the plug 100 according to the embodiment of the present invention, when the plug 140 is attached to the cylindrical wall portion 120, the plug body 143 of the plug 140 is inserted into the internal space SP1 of the cylindrical wall portion 120. Therefore, in this plug 100, the pressure resistance of the plug 140 can be improved, and further, the plug 100 can be used with beverages such as carbonated beverages that generate gas and cause the pressure inside the beverage container 10 to rise.

[0049] <Modification> (A) The shape and material of each part of the plug 100 according to the previous embodiment are not particularly limited, and each part can have any shape and can be made of any material without departing from the spirit of the present invention. For example, in the plug 100 according to the previous embodiment, the shoulder member 110 and the cylindrical wall portion 120 are made of resin or the like, but may be made of metal or the like.

[0050] (B) In the plug 100 of the previous embodiment, an internal space SP2 is formed by the lower side wall 120b, lower accommodating wall 120e, front accommodating wall 120f and third gasket mounting wall 120i of the cylindrical wall 120, and an internal space SP3 is formed by the lower side wall 120b, upper accommodating wall 120d, lower accommodating wall 120e and front accommodating wall 120f of the cylindrical wall 120, and shoulder member 110, strap 300, first gasket PK1, second gasket PK2, etc. are arranged, but some or all of these parts and members may be omitted as long as the gist of the invention is not impaired.

[0051] (C) In the plug 100 according to the previous embodiment, a male-threaded plug having a male-threaded portion 143b formed on the plug body 143 is used as the plug 140, but the plug 140 is not limited to a male-threaded plug, and other types of plugs, such as a female-threaded plug, may be used. When a female-threaded plug is used, it is preferable that a male-threaded portion is formed on the outer circumferential surface of the upper side wall portion 120a of the cylindrical wall portion 120.

[0052] (D) In the beverage container 10 according to the above embodiment, a beverage (including a sparkling beverage) is poured into the vacuum double container 200, but the contents that can be placed in the vacuum double container 200 are not particularly limited.

[0053] (E) In the above embodiment, the vacuum double vessel 200 is used as the vessel, but the vessel is not particularly limited, and may be, for example, a normal single-wall vessel. Also, in the above embodiment, stainless steel is used as the vessel material, but the vessel material may be an alloy other than stainless steel, a resin, or the like.

[0054] (F) Although the plug body 143 was provided in the plug 100 according to the previous embodiment, the plug body 143 may be omitted. In such a case, it is necessary to form a female thread on the inner circumferential surface of the side wall 142b of the lower cover member 142 and to form a male thread on the outer circumferential surface of the upper side wall 120a of the cylindrical wall 120.

[0055] (G) In the plug 100 according to the previous embodiment, the large annular portion 302 of the strap 300 has a substantially annular shape, but it may have another shape. Also, the large annular portion 302 of the strap 300 is fixed unrotatably by a positioning portion when fitted into the recess 112p of the cylindrical wall portion 120, but it may be fixed unrotatably by other means, for example, an adhesive.

[0056] (H) In the plug 100 according to the previous embodiment, the bent portion 303a of the bridging portion 303 of the strap 300 is bent such that the end of the bridging portion 303 of the strap 300 on the uniform thickness portion 303b side faces upward when the plug 140 is attached to the cylindrical wall portion 120. However, the bent structure does not have to be formed in the bridging portion 303 of the strap 300. Also, the bent portion 303a of the bridging portion 303 of the strap 300 may be bent such that the end of the strap 300 on the small annular portion 301 side faces downward when the plug 140 is attached to the cylindrical wall portion 120.

[0057] (I) In the plug 100 according to the previous embodiment, the strap 300 is made of an elastic material, a flexible member, or a deformable material, but the strap 300 may be made of various kinds of elastic materials, flexible materials, or deformable materials. For example, the small annular portion 301, the large annular portion 302, and the bridging portion 303 of the strap 300 may be made of different kinds of elastic materials, flexible materials, or deformable materials.

[0058] (J) In the plug 100 according to the previous embodiment, the uniform thickness portion 303b of the bridging portion 303 of the strap 300 was designed to have a constant thickness, but it may be designed so that the thickness is not constant.

[0059] (K) In the plug 100 according to the previous embodiment, the uniform thickness portion 303b of the bridging portion 303 of the strap 300 is rod-shaped and perpendicular to the cylindrical axis AX of the vacuum double container 200 in a side view when the plug 140 is not attached to the cylindrical wall portion 120. However, the uniform thickness portion 303b of the bridging portion 303 of the strap 300 does not have to be perpendicular to the cylindrical axis AX of the vacuum double container 200 in a side view, and may be in a state other than rod-shaped (for example, a loose state).

[0060] The above modifications may be applied alone or in combination. [Explanation of symbols]

[0061] 10: Beverage container 100: Plug body 101: Main unit 120a: Upper side wall portion (drinking mouth portion) 140: Cap 142b: Side wall (side wall of the lid) 143: Plug body (plug) 200: Vacuum double container (container) 300: Strap (connecting member) 301: Small annular part (annular part) 302: Large annular part (fixed part) 303: Bridge section (strap section) 303a: Bend (the part of the strap near the annular part) 303b: Uniform thickness section (section from the end of the strap on the fixed side to the section adjacent to the annular section)

Claims

1. A main body having a mouth portion and a side wall; A lid that is removably attached to the drinking spout; a connecting member that connects the lid to the main body, the connecting member has a strap portion, a ring-shaped portion formed on one end side of the strap portion, and a fixing portion formed on the other end side of the strap portion, the annular portion is fitted to a side wall of the lid so that the lid can rotate freely; A recess is formed in a side wall of the body, The fixing portion is fitted into the recess and fixedly connected to the main body, The extension portion of the strap portion from the end of the fixed portion to the portion adjacent to the annular portion is rod-shaped when the lid is not attached to the spout portion, A plug, wherein the adjacent portion is bent such that the end portion on the annular portion side faces downward when the extended portion is perpendicular to an imaginary line extending in the vertical direction.

2. The extension portion has a uniform thickness. The plug according to claim 1.

3. 3. The plug according to claim 1, wherein the lid has a plug that is removably attached to the inside of the drinking spout, and the lid is attached to the drinking spout via the plug.

4. The plug according to claim 1 , wherein the recess is formed with a positioning portion that defines a fixing position of the fixing portion.

5. The plug according to claim 4 , wherein the positioning portion fixes the fixing portion so as not to rotate.

6. A plug according to any one of claims 1 to 5, A beverage container comprising: a bottomed cylindrical container to which the stopper is attached.

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