JP7355991B2 - beverage container - Google Patents

Description

The present invention relates to the structure of a beverage container equipped with an inner stopper.

Recently, portable beverage containers (stainless steel bottles) that hold beverages have become necessities of daily life as personal bottles.They are equipped with a screw-type detachable stopper, and the detachable stopper can be removed to open the upper end of the container body (bottle body). There are various types, such as mug-type ones that can be drunk directly from the cup, and pour-out types that have a one-push opening/closing type inner stopper with a drink spout and are poured into a cup from the inner stopper's drink spout. are provided.

In the latter beverage container equipped with an inner stopper, a cylindrical body separate from the stopper is attached to the outer periphery of the stopper that is fitted into the opening of the container body. A female thread is formed on the inner circumferential surface of the cylindrical body part, and the female thread is formed on the inner circumferential surface of the cup. By screwing into a male thread provided on the outer circumferential surface of the opening of the container main body, it can be attached to the opening of the container main body in a manner that covers the inner stopper (see Patent Document 1).

Publication No. 4-4668

However, in the case of the above configuration, it is necessary to provide a male threaded part for attaching the inner stopper to the upper end of the outer circumferential surface of the opening of the container body, and a male threaded part for attaching the cup to the lower end. (opening edge) becomes long. Furthermore, since it is necessary to change the outer diameter of each part, a step is created at the opening (opening edge) of the container body.

As a result, not only does the number of molding steps for the opening of the container main body increase, but also the design quality when the cup is removed deteriorates (decrease in aesthetic appearance due to complexity). In addition, the inner stopper is removed when storing drinks or cleaning, but with the above configuration, even if you forget to attach the inner stopper afterwards, you can still attach the cup and carry it with you. That could happen. In that case, it is also assumed that beverage leakage occurs.

On the other hand, in the case of the same configuration, it is possible to drink directly from the opening of the container body by removing the cup and inner stopper, but as mentioned above, there is a male thread on the upper edge of the outer circumferential surface of the opening of the container body. Because of this, it doesn't taste good. Moreover, the edge of the opening is long, making it difficult to drink.

In addition, recently, while product diversification has increased, there has been a trend toward platforms that share basic components, and in the case of the beverage container in question, manufacturing costs have increased even though there has been no major change in functionality. Although it is desired to turn a large container body (bottle body) into a platform, the above configuration cannot meet such a problem.

The present invention was made in order to solve such problems, and the inner stopper is screwed and fixed to the inner peripheral surface of the opening of the container body, and the cup is fixed by screwing to the outer peripheral surface of the inner stopper. This eliminates the need for a screw thread for attaching the cup on the outer circumferential surface of the opening of the container body , making the outer circumferential surface of the opening of the container body smooth, and ensuring that the inner stopper is supported against the opening of the container body. The object of the present invention is to provide a beverage container that is fixed .

In order to solve the above-mentioned problems, the present invention includes the following problem-solving means.

(1) Means for solving the problem of the invention of claim 1 The means for solving the problem in the beverage container of the present invention includes a container main body having a vacuum double wall structure having an opening on the upper end side , and an inner peripheral surface of the opening on the upper end side of the container main body. The container body includes an inner stopper having a cylindrical structure consisting of an outer cylinder and an inner cylinder , which is screwed and fixed to the inner stopper, and a cup which is screwed and fixed to the outer peripheral surface of the outer cylinder of the inner stopper. A beverage container in which an opening with an inverted U-shaped cross section is formed by integrally joining the upper end side opening edges of the inner container and the outer container with each other to have an inverted U-shaped cross section,
The outer cylinder of the inner stopper includes a lower small-diameter cylindrical part that is screwed onto the inner circumferential surface of the upper opening of the container body and has an outer diameter smaller than the inner diameter of the upper opening of the container body; The container has a large-diameter cylindrical part on the upper side that is exposed upward from the opening on the upper end of the main body and has an outer diameter larger than the inner diameter of the opening on the upper end of the container body, and the cup is screwed onto the outer peripheral surface of the cylindrical part. ,
A threaded part on the outer periphery of the small-diameter cylindrical part on the lower side that screws into a threaded part on the inner circumferential surface of the opening on the upper end of the container body to fix the outer cylinder to the opening on the upper end of the container main body, and an upper part. The outer periphery of the lower end of the cylinder with a larger diameter on the side is screwed into the threaded part on the inner peripheral surface of the cup to fix the cup to the outer cylinder , and the threaded part on the outer periphery of the cylinder with a smaller diameter on the lower side is screwed onto the threaded part on the inner peripheral surface of the cup. When screwed into the threaded part on the inner circumferential surface of the opening on the upper end of the main body, the lower surface thereof abuts and engages with the upper end of the opening on the upper end of the container main body to support and fix the outer cylinder . It is characterized by the fact that it has been established.

According to such a configuration, the inner stopper (its outer cylindrical portion) attached to the upper end opening of the container body is screwed and fixed to the inner circumferential surface of the upper end opening of the container main body . The cup, which was screwed and fixed to the outer circumferential surface of the side opening, is screwed and fixed to the outer circumferential surface of the inner stopper (its outer cylindrical part) exposed upward from the upper end side opening of the container body, so that the container The threaded portion on the main body side only needs to be formed on the inner peripheral surface side of the upper end side opening of the container main body, and the outer peripheral surface side of the upper end side opening of the container main body can be formed into a smooth and pleasant surface. Further, the opening itself on the upper end side of the container main body can be formed to have the same diameter and a short length in the vertical direction.

Therefore, by removing the cup and using the inner stopper itself as a removable type like a conventional screw-type stopper, the container body can be configured as a mug-type beverage container that can be drunk directly. becomes.

In addition, the inner stopper is equipped with a beverage spout, an open switch (button), and a close switch (button), so that it can be poured into a cup with a single push operation while still screwed into the upper opening of the container body. If configured so that this can be done, it can be configured as a one-push pouring type beverage container with a cup.

As a result, with the same configuration, the container body can be commonly used for inner stoppers of various structures, and the beverage container body can be made into a platform. As a result, from the manufacturer's perspective, the manufacturing cost of the product decreases.

On the other hand, from the user's perspective, by using the purchased container body and purchasing an inner stopper with a different function, there is an advantage that the product function can be improved at low cost.

Further, in the case of the same configuration, if the inner stopper is not attached to the opening of the container body, the cup itself cannot be attached, so there is no chance of forgetting to attach the inner stopper and attaching the cup.

Furthermore, with the same configuration, the number of steps required for molding the opening on the upper end side of the container main body is reduced, and the aesthetic appearance of the container body is also improved.

In particular, in the case of the above configuration, the outer cylindrical portion of the inner stopper is outer than the inner diameter of the opening at the upper end of the container body , which is screwed into the inner peripheral surface of the opening at the upper end of the container body. A cylindrical portion with a small diameter on the lower side, and a tube portion that is exposed upward from the opening on the top end of the container body , and has an outer diameter that is outside the inner diameter of the opening on the top end of the container body, and the cup is screwed onto the outer peripheral surface of the cylindrical portion. A cylindrical part with a large diameter on the upper side is provided, and the outer periphery of the cylindrical part with a small diameter on the lower side is screwed into the threaded part on the inner circumferential surface of the opening on the upper end side of the container main body , so that the outer cylinder is attached to the upper end side of the container main body. A threaded part is fixed to the opening , and a threaded part on the inner peripheral surface of the cup is screwed to the lower end of the upper large diameter cylinder to fix the cup to the outer cylinder . When the threaded portion on the outer periphery of the container is screwed into the threaded portion on the inner peripheral surface of the opening on the upper end side of the container main body, the lower surface thereof abuts and engages with the upper end of the opening on the upper end side of the container main body . A threaded portion is provided to support and fix the outer cylinder .

Therefore, the operation of attaching and detaching the inner stopper (its outer cylindrical portion) to the opening on the upper end side of the container body becomes easy, and the state of attachment to the opening on the upper end side of the container main body is stabilized . The state in which the cup is attached to the outer cylindrical portion is also secure.

(2) Means for solving the problem of the invention of claim 2 The means for solving the problem of the invention is that in the structure of the means for solving the problem of the invention of claim 1, the inner plug is formed on the outer circumferential surface of the small-diameter cylindrical part on the lower side of the outer cylinder. The threaded part is fixed by screwing into the threaded part on the inner peripheral surface of the opening on the upper end side of the container body , and an on-off valve for dispensing a beverage is installed in the inner cylinder that is integrally provided inside the outer cylinder . The valve stem is supported by a valve stem that can be raised and lowered . It is composed of a cylindrical stopper main body that forms a beverage dispensing passage with the cylinder and is equipped with a valve shaft operating mechanism for an on-off valve.

In such a configuration, the small-diameter cylindrical portion on the lower end of the cap top body must be screwed into the inner cylindrical portion of the bottom bottom body, which is screwed and fixed to the inner peripheral surface of the opening on the top end of the container body. For example, a one-push opening/closing type beverage pouring type beverage container having a beverage pouring passage can be easily constructed. Furthermore, by releasing the screwed state, the upper body and the lower body can be easily separated, and they can be easily disassembled and cleaned.

In addition, if the small-diameter cylindrical part on the lower end side of the top body of the stopper is screwed and fixed to the inner cylinder part inside the bottom body of the stopper and separated from the opening of the container body, the container body can be directly drunk. It can be used as a mug-type beverage container, and can be used in the same manner as a screw-type stopper.

As a result of the above, according to the present invention, the opening on the upper end side of the container main body can basically be formed to be smooth and short in length, allowing direct drinking, and the one-push opening/closing stopper with a beverage pouring spout can be formed. It becomes possible to correspond to the structure and other types of inner stopper structures as desired, and it becomes possible to utilize the beverage container body as a platform-type container that can be applied to various beverage containers.

FIG. 1 is a sectional view of a beverage container in which a container body, an inner stopper, and a cup are integrated according to an embodiment of the present invention. FIG. 2 is an enlarged sectional view of the upper end portion of the beverage container of FIG. 1; FIG. 3 is an enlarged sectional view of the inner stopper in an exposed state with the cup removed from the enlarged view of FIG. 2; 3 is an enlarged cross-sectional view of the cup removed from the enlarged view of FIG. 2; FIG. FIG. 2 is an exploded perspective view showing a lower inner stopper body, an upper inner stopper main body, and a cup separated from the container main body of the beverage container. It is an enlarged perspective view showing the structure of the lower main body part of the inner stopper in the same beverage container. It is an enlarged perspective view showing the structure of the inner surface part of the cup in the same beverage container. It is a sectional view showing the composition of the container main body of the same beverage container. FIG. 2 is an enlarged cross-sectional view showing the structure of the inner stopper portion of the beverage container. FIG. 2 is an enlarged cross-sectional view showing the structure of the lower main body portion of the inner stopper of the beverage container. It is an enlarged sectional view showing the structure of the inner stopper upper main body portion of the inner stopper of the same beverage container.

Hereinafter, embodiments of the structure of a beverage container equipped with an inner stopper according to the present invention will be described in detail with reference to the accompanying FIGS. 1 to 11. In this embodiment, as an example of the structure of the container body of the beverage container, a stainless steel bottle made of a vacuum double container with high heat retention function (insulation and heat retention function) is adopted. This includes both heat retention in cold conditions and heat retention in cold conditions.

<About the general structure of the entire beverage container>
First, FIG. 1 shows a cross-sectional configuration of the entire beverage container according to an embodiment of the present invention, and FIG. 2 shows an enlarged cross-sectional configuration of the stopper main body portion on the upper end side. .

As is clear from FIG. 1, the beverage container (stainless steel bottle) of this embodiment can be roughly divided into a vertically long container body 1 that accommodates a beverage, and a container that is screwed into the upper opening of the container body 1. It consists of an inner stopper 2 that is detachably attached to the inner stopper 2, and a cup 3 that is screwed and fixed to the outer periphery of the inner stopper 2 so as to cover the outer periphery of the inner stopper 2 and the upper end opening of the container body 1.

Hereinafter, the respective structures of the container body 1, inner stopper 2, and cup 3 will be explained in detail.

<About the structure of the container body 1: Figures 1, 5, and 8>
As shown in FIGS. 1, 5, and 8, for example, the container body 1 has a stainless steel inner container (inner case) 11 which also has a bottomed cylindrical structure and is larger than the inner container 11. It consists of an outer container (outer case) 12 made of stainless steel with a large diameter of predetermined dimensions, and the upper end opening edges 11a and 12a of the inner container 11 and the outer container 12 are joined to each other into a curved structure with an inverted U-shaped cross section. By integrating them, a container main body having a vacuum insulation structure is formed, which has a sufficiently large opening on the upper end side.

On the outer periphery of the opening of the container body 1 (outer periphery of the opening edge), there is a shoulder portion (small diameter portion) 12b with a stepped structure, and on the intermediate portion on the inner peripheral surface side, there is a male portion for screwing and fixing the inner stopper 2. A threaded portion (thread portion) 11b and a neck portion (heat keeping portion) 11c having a partially small diameter are provided at the lower portion of the inner peripheral surface thereof. An inner stopper 2, which will be described below, is removably screwed into the opening.

<About the structure of the inner stopper 2: Fig. 1, Fig. 2, Fig. 3, Fig. 5>
The inner stopper 2 can be roughly divided into a stopper that is provided with a female screw portion (thread portion) 21b that is located on the lower side and is screwed into the male screw portion 11b provided on the inner peripheral surface of the opening of the container body 1. A lower body 21 , an opening/closing valve (core) 22 located at the center of the lower body 21 and supported so as to be vertically movable, and an upper cover 24 screwed and fixed to the lower body 21 . It consists of a stopper main body 23 supporting the stopper , an open switch 25 supported by the stopper cover 24, a rotating body 25A, and a close switch 26.

<About the structure of the bottom body 21: Figures 2, 3, 6, 9, and 10>
The stopper main body 21 has two cylindrical parts, an outer cylindrical part 21A with a large diameter on the outside and an inner cylindrical part 21B with a small diameter on the inside, which are coaxially integrally molded with resin through a bottom wall part 21C. It is attached to the container body 1 by screwing and fixing the lower portion of the outer cylindrical portion 21A into the upper end side opening (inside the opening edge) of the container body 1. A valve shaft portion (core body) 22a of the on-off valve 22 is supported in the small diameter inner cylinder portion 21B so as to be movable up and down.

The large-diameter outer cylindrical portion 21A is a lower-side small-diameter cylindrical portion that is located below the substantially middle portion of the cylindrical body in the vertical direction and whose outer diameter is smaller than the inner diameter of the upper end opening of the container body 1. The cylindrical body is located above the substantially middle part in the vertical direction and is exposed upward from the upper opening of the container body 1, and its outer diameter is equal to the inner diameter of the upper opening of the container body 1. It consists of a cylindrical part with a large diameter on the upper side, which is slightly larger than the cylindrical part.

The lower diameter cylindrical portion has a female threaded portion 21b provided on its outer peripheral surface and a male threaded portion 11b provided on the inner peripheral surface of the upper end opening of the container body 1 (inner peripheral surface of the opening edge). On the other hand, the upper large-diameter cylindrical portion has a male threaded portion (threaded portion) on its lower end outer circumferential surface that is threaded into a female threaded portion (threaded portion) 31b on the inner circumferential surface of the cup 3, which will be described later. It is configured with a threaded portion) 21a. Then, the inner stopper 2 (large diameter outer cylinder part 21A) is screwed into the female screw part 21b of the lower small diameter cylinder part to the male screw part 11b of the inner peripheral surface of the upper end opening of the container body 1. When attached to the upper end opening of the container body 1, the cup 3 is fitted onto the outer periphery of the inner stopper 2 (large diameter outer cylindrical portion 21A), and the female threaded portion ( The threaded portion) 31b is screwed into the male threaded portion (threaded portion) 21a on the outer periphery of the lower end of the upper large diameter cylindrical portion, so that the inner plug 2 (large diameter outer cylindrical portion 21A) is inserted. Then, the cup 3 is attached to the container body 1.

In this case, the upper large-diameter cylindrical portion exposed upward from the upper end side opening of the container body 1, which forms the upper portion of the large-diameter outer cylindrical portion 21A of the inner stopper 2, has an outer diameter of is formed slightly larger than the inner diameter of the upper end side opening of the container body 1, and is located on the outer circumferential surface of the lower end thereof and is screwed into a female threaded portion (threaded portion) 31b of the inner circumferential surface of the cup 3, which will be described later. It is configured with a mating male screw portion (thread portion) 21a. Therefore, the female threaded part 21b of the lower small diameter cylindrical part forming the lower part of the large diameter outer cylindrical part 21A of the inner stopper 2 is connected to the male threaded part 11b of the inner peripheral surface of the upper end side opening of the container body 1. When the screwed inner stopper 2 (large-diameter outer cylindrical portion 21A) is attached to the upper end opening of the container body 1, the female threaded portion (threaded portion) 31b on the inner peripheral surface of the cup 3 is screwed. The large-diameter outer cylindrical portion 21A of the inner stopper 2 is connected to the container body 1 in such a way that the lower surface of the mating male screw portion (thread portion) 21a abuts and engages with the upper end of the upper end side opening of the container body 1. It is securely supported and fixed to the upper end side opening. Therefore, not only the large diameter outer cylinder part 21A of the inner stopper 2 but also the attachment state of the cup 3 to the container body 1 via the large diameter outer cylinder part 21A of the inner stopper 2 becomes stable.

Further, a sealing packing 21c is provided on the outer periphery of the lower end of the large-diameter outer cylinder portion 21A, that is, on the outer periphery of the lower end of the small -diameter cylinder on the lower side. It is fixed in such a way that it comes into contact with the neck portion 11c inside the section .

On the other hand, the small-diameter inner cylindrical portion 21B has a female threaded portion (threaded portion) 21d on its upper outer circumferential surface, and a smaller diameter portion of the lower end of the plug upper body 23, which will be described later, is connected to this female threaded portion 21d. A male screw portion (thread portion) 23a on the inner circumferential surface of the cylindrical body portion 23A is screwed and fixed. A boss-shaped sleeve 21f for fitting and supporting the on-off valve 22 is integrally molded inside the small-diameter inner cylindrical portion 21B, and opens in both the downward and upward directions. A valve shaft (core main body) 22a of the on-off valve 22 is loosely fitted into the portion 21e so as to be movable up and down. Further, a ring-shaped groove 22d is provided on the outer periphery of the upper end of the valve shaft 22a, and an umbrella-shaped coil spring locking piece 22f is locked using this groove 22d. A coil spring 21g is interposed between the lower surface of the locking piece 22f and the upper surface of the bottom wall portion 21C on the outer periphery of the sleeve 21f, and supports the valve shaft 22a while always biasing it upward. As a result, the tappet-shaped valve body 22b integrally provided on the lower end side of the valve shaft 22a is always in contact with the lower surface side of the bottom wall portion 21C, and the liquid injection port (beverage introduction port) 21i is maintained in a closed state. It is configured as follows. In this case, a valve stem packing 22e is provided on the outer periphery of the inner shaft portion of the sleeve 21f of the valve stem 22a, and a valve element packing 22c is provided on the outer periphery of the valve body 22b to perform the necessary sealing action. ing.

A plurality of liquid injection ports 21i are located at the lower end portion of the small-diameter inner cylindrical portion 21B and opened in the circumferential direction, each of which is located within the sealing area of the valve body 22b. Therefore, when the valve stem 22a is not pressed downward by a valve body opening/closing mechanism including an open switch 25, a rotating body 25A, ratchet pawls 25e, 25e, etc., which will be described later, the valve body 22b The valve body is reliably sealed by the valve packing 22c to prevent drinks from entering the same area.

<Regarding the structure of the stopper main body 23: Figs. 2, 3, 5, 9, and 11>
The top main body 23 has a three-stage structure including a cylindrical body part 23A with a small diameter on the lower end side, a cylindrical body part 23B with a medium diameter having a bottom wall part on the upper end side thereof, and a cylindrical body part 23C with a large diameter on the upper end side thereof. The cylindrical body portions are integrally molded with resin at approximately the same height.

The inner diameter of the lower-end small-diameter cylindrical portion 23A corresponds to the outer diameter of the inner cylindrical portion 21B of the bottom main body 21, and the female thread on the outer circumferential surface of the inner cylindrical portion 21B of the bottom main body 21 is formed. The male screw portion 23a on the inner peripheral surface side of the portion 21d is screwed into the portion 21d to be integrally connected and fixed (see FIGS. 2 and 9). The upper stopper body 23 is screwed into the lower stopper main body 21 by operating the upper large-diameter cylindrical portion 23C.

On the other hand, the medium diameter cylindrical part 23B having a bottom wall part and the large diameter cylindrical part 23C without a bottom wall part accommodate a two-stage structure in which a small diameter on the lower side and a large diameter on the upper side are continuous. A space is formed, and an on-off valve 22 is provided with an open operation button 25B for rotating the rotary body 25A and the rotary body 25B in the accommodation space. It is constructed by incorporating a valve body opening/closing mechanism such as the close switch 26 provided therein, and installing a stopper cover 24 that supports the close button 26c of the close switch 26 so that it can be raised and lowered.

When the open switch 25 presses the operation surface portion 25f of the open operation button 25B, which has a hat-shaped cross section, the lower end side large diameter pressing portion 25g rotates the intermediate side large diameter peripheral wall portion 25d of the rotating body 25A. The upper end of the valve shaft 22a of the on-off valve 22 on the lower body 21 side is pushed down in a predetermined manner using the on-off valve pressing part 25b at the tip of the cylindrical body 25a extending downward from the center of the rotating body 25A. It is pushed down by the same predetermined distance and is locked by the ratchet claws 25e, 25e, . . . . In addition, a through hole 23c is formed in the center of the bottom wall of the intermediate diameter cylindrical portion 23B at the middle stage, through which the opening/closing valve pressing portion 25b at the tip of the cylindrical body portion 25a moves up and down. In this state, the valve body portion 22b of the above-mentioned on-off valve 22 is also lowered by a predetermined distance, and the above-mentioned liquid injection port (beverage introduction port) 21i is communicated with the liquid injection passage 21j in the container body 1. The liquid injection passage 21j is connected to the inner circumferential surface of the large-diameter outer cylindrical portion 21A and the bottom wall portion 21C of the lower stopper main body 21, and the small-diameter cylindrical portion 23A of the lower step and the medium-diameter cylindrical portion 23B of the middle step of the above-mentioned stopper upper main body 23. It is formed between the outer peripheral surface and the outer peripheral surface. The upper end thereof serves as a spout (beverage spout) 21k that continues in the circumferential direction.

As a result, when the container body 1 is tilted by a predetermined angle or more in this state, the beverage is introduced into the liquid injection passage 21j through the liquid injection port (beverage introduction port) 21i, and the liquid injection passage 21j is injected into the liquid injection passage 21j. Beverage is poured out from the upper end spout 21k.

On the other hand, from this state, if the open button 25B of the open switch 25 in the lowered state or the close button 26c of the close switch 26, which is maintained slightly upwardly raised (projected) in the open state, is pushed downward, The locked state of the rotary body 25A by the ratchet pawls 25e, 25e, etc. is released, and the rotary body 25A and the open operation button 25B of the open switch 25 are returned to their original states by the biasing force of the coil spring 21g, and again. The liquid injection port 21i is closed and the water is stopped.

The close button 26c of the close switch 26 is formed as an annular member having an inverted U-shaped cross section, and the inner vertical wall portion 26a of the close button 26c of the close switch 26 is a large diameter outer peripheral portion 25c of the lower end side of the open button 25B of the open switch 25. At the same time, the outer circumferential vertical wall portion 26b is engaged with the stopper cover 24. Further, reference numeral 24a denotes a cylindrical body portion at the lower part of the plug cover 24 that houses the open operation button 25B, the rotating body 25A, a valve opening/closing mechanism such as ratchet pawls 25e, 25e, etc., and 24b designates the plug cover 24 having a U-shaped cross section. The upper end close button engaging portion 24c indicates the upper wall surface portion (cover surface portion) of the upper end of the stopper cover 24. The basic structure and operation of these valve body opening/closing mechanisms are the same as those of the prior art example (publication of Utility Model Publication No. 4-4668) of the applicant mentioned above.

<About the configuration of cup 3: Figure 2, Figure 4, Figure 6, Figure 7>
As shown in FIGS. 4 and 7, for example, the cup 3 is made by superimposing a stainless steel material 32 on the outer circumferential surface of an inner resin member 31, and a sealing material 33 is interposed on the edge of the opening to seal the mutual opening. The edges 31a and 32a are fixed by being securely engaged with each other as shown in FIG. The inner circumferential surface side resin member 31 portion is provided with a stopper bottom that is exposed upward from the opening of the container body 1 of the inner stopper 2 screwed and fixed into the opening of the container main body 1 as described above. The outer cylindrical portion 21A of the main body 21 has a female screw portion (thread portion) 31b that is screwed into the male screw portion (thread portion) 21a formed on the outer peripheral surface of the outer cylinder portion 21A, and the female screw portion 31b is connected to the bottom body of the stopper . By screwing into the male threaded part 21a on the outer peripheral surface of the outer cylinder part 21A of 21, the inner stopper 2 is fitted and fixed to the opening of the container body 1 in a manner that covers the upper part thereof.

In this case, a protrusion 31c for retightening is provided at the end in the screwing direction of the female threaded part (threaded part) 31b on the inner peripheral surface side of the cup 3, while the outer cylindrical part of the lower body 21 A corresponding recess 21h is also provided in the male threaded portion 21a on the outer circumferential surface of 21A, allowing reliable screw engagement.

<About the basic structure and operation of the beverage container according to the embodiment of the present invention>
As described above, the beverage container according to the embodiment of the present invention basically includes a container body 1 that accommodates a beverage, and a container body 1 that is screwed onto the inner circumferential surface of the upper end opening of the container body 1. An inner stopper 2 fixed to the container body 1; and a cup fixed to the container main body 1 by being screwed onto the outer peripheral surface portion of the inner stopper 2 exposed above the opening of the container main body 1. 3.

According to such a configuration, first, the inner stopper 2 attached to the opening of the container body 1 that accommodates a beverage is screwed and fixed to the inner peripheral surface of the opening of the container body 1, and then the cup 3 is fixed. It is screwed onto the outer circumferential surface portion of the inner stopper 2 exposed above the opening of the container body 1, and is fixed to the container main body 1 via the inner stopper 2.

Therefore, the thread at the opening of the container body 1 only needs to be formed at one location on the inner circumferential surface of the opening of the container body 1, and the outer circumferential surface of the opening of the container body 1 has a smooth mouthfeel. can be formed on the good side. Further, it can be formed to have the same diameter and short length in the vertical direction. As a result, the number of man-hours required for molding the opening of the container body 1 is reduced, manufacturing costs are reduced, and the aesthetic appearance is improved.

Moreover, if the cup 3 is removed and the inner stopper 2 itself is used as a removable type like a conventional screw-type stopper (for example, if it is installed and removed in the integrated state shown in Fig. 9), the container The main body 1 can be configured as a mug-type beverage container that can be drunk directly.

In addition, the inner stopper 2 is equipped with a beverage spout, an open switch (button) 25, and a close switch (button) 26, and can be dispensed into a cup 3 with a single push operation while remaining screwed into the opening of the container body 1. If configured so as to be able to do so, it can be configured as a one-push pouring type beverage container with a cup 3.

As a result, the container body 1 can be commonly used for inner stoppers 2 of various structures, and the container body 1 can be made into a platform. As a result, from the manufacturer's perspective, the manufacturing cost of the product decreases.

On the other hand, from the user's perspective, it is possible to improve product functionality at low cost without changing the container body 1 by using the purchased container body and purchasing a new inner stopper 2 with a different function. There are benefits that can be achieved.

Further, in the case of the above configuration, if the inner stopper 2 is not attached to the opening of the container body 1, the cup 3 itself cannot be attached. As a result, there is no need to forget to attach the inner stopper 2 and attach the cup 3.

Further, in the above configuration, the container body 1 is made of metal with a vacuum double wall structure in which the upper end opening edges 11a and 12a of the bottomed cylindrical inner container 11 and the outer container 12 are integrally bonded to each other. It consists of a container, and the upper end of the opening has a curved surface with an inverted U-shape in cross section.

According to such a configuration, it is possible to improve the mouth feel of the drinking spout, and it is suitable for constructing a direct-drinking mug-type beverage container with a heat-retaining function. If the structure of the inner stopper 2 used is a screw-type detachable stopper structure, it is a mug type that can be used to drink directly using the smooth opening with the same inverted U-shaped cross section without using the cup 3. type of beverage container can be constructed.

On the other hand, if the inner stopper 2 is changed to a one-push opening/closing type inner stopper structure with a beverage spout, the drink can be poured into a cup from the beverage spout of the inner stopper 2 while the inner stopper remains fixed in the opening. It can be constructed into a pour-out type beverage container. Moreover, even in such a configuration, since the inner stopper 2 is simply screwed into the threaded portion 11b on the inner circumferential surface of the opening of the container body 1, the inner stopper 2 itself is not threaded. If it is released and removed (removed in the state shown in FIG. 9), it can also be used as a direct-drinking beverage container similar to the above (see the state shown in FIG. 8). As a result, the container body 1 can be more effectively formed into a platform.

Furthermore, in the case of the above configuration, the inner stopper 2 more specifically has a threaded part (female threaded part) 21b on the outer peripheral surface of the outer cylinder part 21A inside the opening of the container body 1, as shown in FIG. A stopper main body 21 (which is screwed and fixed to the threaded part (male threaded part) 11b on the circumferential surface and supports the valve shaft 22a of the on-off valve 22 for beverage dispensing in the inner cylinder part 21B so as to be able to rise and fall freely 10) is located inside the outer cylinder part 21A of the stopper main body 21, and the lower end side cylinder part 23A is screwed and fixed to the outer peripheral surface of the inner cylinder part 21B of the stopper main body 21, and It is composed of a cylindrical stopper body 23 (see FIG. 11) that forms a liquid injection passage 21j with the outer cylindrical portion 21A of 21 and is provided with a valve shaft operating mechanism for the on-off valve 22. There is.

In the case of such a configuration, the lower end portion 23A of the cylindrical stopper upper body 23 is screwed onto the inner cylindrical portion 21B of the lower stopper body 21 which is screwed and fixed to the inner peripheral surface of the opening of the container body 1. Then, a one-push opening/closing type beverage pouring type beverage container having a beverage pouring passage can be easily constructed.

Furthermore, in the case of the same configuration, by releasing the screwed state of the top body 23 and the bottom body 21, the top body 23 and the bottom body 21 can be easily separated, and disassembly and cleaning are also easy. (See Figures 10 and 11).

In addition, the inner stopper 2 is separated from the opening of the container body 1 while maintaining the integrated state in which the upper stopper main body 23A is screwed and fixed to the inner cylindrical portion 21B of the lower stopper main body 21 (see the state in FIG. 9). Then, the container body 1 can be used as a direct-drinking mug-type beverage container.

(Modified example)
The structure of the inner stopper 2 portion can be modified in various ways, and for example, a tea strainer can be provided instead of the above-mentioned on-off valve mechanism.

Further, the opening/closing valve mechanism is not limited to the above-mentioned configuration, and various changes can be made.

1 is a container main body, 11 is an inner container, 11a is an opening edge, 11b is a male screw part, 12 is an outer container, 12a is an opening edge, 2 is an inner stopper, 21 is a bottom body, 21A is an outer cylinder part, 21B is an inner cylinder part, 22 is an on-off valve, 22a is a valve body, 22b is a valve body, 23 is a stopper body, 23A is a small diameter cylinder part, 23B is a medium diameter cylinder part, and 23C is a large diameter cylinder. In the body part, 25 is an open switch, 26 is a close switch, and 3 is a cup.

Claims (2)

A container body with a vacuum double wall structure having an opening on the upper end side ,
an inner plug having a cylindrical structure consisting of an outer cylinder and an inner cylinder, which is screwed and fixed to the inner peripheral surface of the opening on the upper end side of the container body;
It includes a cup that is screwed and fixed to the outer peripheral surface of the outer cylinder of the inner stopper, and
A beverage container in which the container body has an opening having an inverted U-shaped cross section by integrally joining the upper opening edges of the inner container and the outer container with each other to have an inverted U-shaped cross section. hand,
The outer cylinder of the inner stopper has a small diameter cylinder part on the lower side , which has an outer diameter smaller than the inner diameter of the opening on the upper side of the container body, and is screwed onto the inner peripheral surface of the opening on the upper side of the container body. ,
The upper large diameter is exposed upward from the opening at the upper end of the container body and has an outer diameter larger than the inner diameter of the opening at the upper end of the container body, and the cup is screwed onto the outer circumferential surface of the container body. Equipped with a cylindrical part,
A threaded part on the outer periphery of the small-diameter cylindrical part on the lower side and a threaded part on the inner peripheral surface of the opening on the upper end of the container body to fix the outer cylinder to the opening on the upper end of the container main body; The outer periphery of the lower end of the large diameter cylinder is screwed into the threaded part on the inner circumferential surface of the cup to fix the cup to the outer cylinder , and the threaded part on the outer periphery of the smaller diameter cylindrical part on the lower side is screwed onto the threaded part on the inner circumferential surface of the cup. When screwed into the threaded part on the inner circumferential surface of the opening on the upper end side, the threaded part that abuts and engages the lower surface side with the upper end of the opening on the upper end side of the container main body to support and fix the outer cylinder . established,
A beverage container characterized by: The inner stopper is
The threaded portion on the outer circumferential surface of the small-diameter cylindrical portion on the lower side of the outer cylinder is screwed into the threaded portion on the inner circumferential surface of the opening on the upper end side of the container main body , and
a bottom body that supports a valve stem of an on-off valve for beverage dispensing in a vertically movable manner in an inner cylinder that is integrally provided inside the outer cylinder ;
Located inside the stopper main body, a cylindrical body portion with a small diameter on the lower side is screwed and fixed to the outer peripheral surface of the inner cylinder , and forms a beverage dispensing passage with the outer cylinder of the stopper main body , A cylindrical stopper body equipped with a valve shaft operating mechanism for an on-off valve;
The beverage container according to claim 1, characterized in that it consists of:

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