JP2013147284A - Variable capacity container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a variable capacity container having a simple and inexpensive constitution, and capable of finely changing the capacity of the container by an easy operation irrespective of the grip or the skill of a user.SOLUTION: A variable capacity container 1 includes a mouth part 31; a neck part 32 inserted under the mouth part 31; an upper storage part 21 having a substantially cylindrical upper barrel section 34 inserted below the neck part 32, and having a female thread part 34a on its outer circumference with its lower end 34b being opened; and a lower storage part 22 having a substantially cylindrical lower barrel section 41 with its upper end 41a being opened, and having a male thread part 43 threadedly engaged with the female thread part 34a, on its outer circumference, and a bottom section 42 continuous to the lower barrel section 22 with its lower end being closed. In the variable capacity container 1, content is stored inside a space formed by threadedly engaging the female thread part 34a to the male thread part 43.

Description

  The present invention relates to a variable capacity container that can store a liquid, a granule, a powder, and the like and that can change the storage capacity.

  Beverages such as alcoholic beverages, soft drinks, lactic acid bacteria beverages and milk are accommodated in containers having various materials, shapes, volumes, etc., sealed and marketed. When these containers are opened after purchase, the taste, aroma, flavor, and the like change as time passes. This change includes, for example, oxidation of components constituting beverages, propagation of various fungi such as acetic acid bacteria generated or mixed in the production process of beverages, volatilization of volatile substances such as carbon dioxide generated or injected in the production process of beverages, etc. Due to

In order to suppress such changes in beverage taste, aroma, flavor and the like after opening the container, various techniques have been conventionally proposed.
First, in order to prevent the oxidation of wine, there is a wine anti-oxidation device for after-opening in which an oxygen scavenger is attached to the lower side of a stopper that can seal a wine bottle (see, for example, Patent Document 1). Hereinafter, this technique is referred to as a first conventional example.

  In addition, in order to prevent wine oxidation, a container main body having an open neck and deformable in a variable volume, and a stopper capable of expanding the diameter from a diameter smaller than the inner diameter of the neck to a diameter larger than the inner diameter of the neck. And a liquid storage container. This liquid storage container is inserted into the neck from the opening of the neck in a state where the stopper is smaller in diameter than the inner diameter of the neck, and by expanding the diameter of the stopper in the neck so that the stopper is in close contact with the inner surface of the neck, The neck is sealed at an arbitrary position of the neck. Note that a handle for attaching the plug to an arbitrary position of the neck is attached to the plug (see, for example, Patent Document 2). Hereinafter, this technique is referred to as a second conventional example.

  In order to suppress the volatilization of carbon dioxide injected into carbonated drinking water, it is connected to an air pump, an air pump, an air supply pipe that can be inserted into the container, and a tip of the air supply pipe. There is a sealing device for a carbonated beverage container provided with a spherical elastic body that can be inflated with air and can be brought into close contact with the inner surface of the container, and a pressure release valve provided in an air supply pipe or an air pump (see, for example, Patent Document 3) .) Hereinafter, this technique is referred to as a third conventional example.

  In addition, although it is not intended to suppress changes in the taste, aroma, flavor, etc. of the beverage after opening the container, as a variable capacity container capable of changing the volume of the liquid contained inside, for example, Conventionally, there have been the following plastic bottles. This PET bottle is a bellows-like portion whose height direction is horizontal except for the mouth portion at the upper end, the width in the height direction of the mouth portion, and the width in the height direction of the bottom portion. Yes. By pressing the bellows-like portion of the plastic bottle main body from one or both directions in the height direction toward the center of the plastic bottle main body, the bellows-like portion is configured to be kept in a crushed state. For example, see Patent Document 4.) Hereinafter, this technique is referred to as a fourth conventional example.

JP 2005-132475 A Japanese Patent No. 4267060 Japanese Patent Laying-Open No. 2005-112407 Japanese Patent No. 4537264

  In the first conventional example described above, oxygen cannot always be completely removed, so that it is not suitable for long-term storage, and it is necessary to replace the oxygen scavenger every time the bottle is opened. In addition, changes in the taste, aroma, flavor, etc. of the beverage after opening the container are not only the oxidation of the components constituting the beverage, but also the propagation of various fungi such as acetic acid bacteria generated or mixed in the beverage production process, the production of the beverage It is also caused by volatilization of volatile substances such as carbon dioxide generated or injected during the process. Therefore, in the first conventional example described above, it is impossible to cope with the case where the taste, aroma, flavor, etc. of the beverage after opening the container changes due to reasons other than oxidation of the components constituting the beverage.

  In the second conventional example described above, severe conditions such as flexibility, rigidity, durability, and moldability of the container body are imposed in order to keep the bottom surface of the stopper in contact with the liquid level according to the remaining amount of beverage. This is expected to limit the materials that can be used. Further, in the second conventional example described above, in order to always bring the lower surface of the stopper into contact with the liquid level in accordance with the remaining amount of beverage, the user is required to have a certain grip strength and skill, and to a person with a small grip strength. The air space in the container cannot be eliminated without crushing the container body, and if the skill is insufficient even if the grip force is sufficient, the container body will be crushed more than necessary and the beverage will overflow from the opening of the container. Furthermore, in the above-described second conventional example, even if the container body is formed of an optimal material and the gripping power and skill of the user are sufficient, the air remaining in the container decreases as the remaining amount of the beverage decreases. The space cannot be lost, and the container body itself cannot become independent.

  Furthermore, in the third conventional example described above, every time the beverage remaining in the container is drunk, the balloon elastic body must be evacuated or the balloon elastic body and the air supply bowl must be taken out from the container. Not good. Moreover, in the above-mentioned third conventional example, the total length of the container and the sealing device becomes longer, and may not enter the refrigerator or the wine cooler. It becomes high and independence becomes difficult.

  Further, in the above-described fourth conventional example, when the gap between the bellows-like portions is wide, the air space in the container may not be eliminated depending on the remaining amount of the beverage, When the interval is narrow, the durability and independence of the container may decrease. Further, in the above-described fourth conventional example, the user is required to have a certain gripping force and skill, and a person with a small gripping force cannot eliminate the air space in the container without crushing the container body. However, if the skill is insufficient, the container body will be crushed more than necessary and the beverage will overflow from the opening of the container.

  This invention is made | formed in view of the situation mentioned above, and makes it an example of a subject to solve the above problems, and provides the capacity | capacitance variable container which can solve these subjects. For the purpose.

  In order to solve the above-described problem, a variable capacity container according to the first aspect of the present invention includes a mouth portion, a neck portion formed by being inserted through a lower portion of the mouth portion, a lower portion of the neck portion, and a side surface. An upper housing portion having a substantially cylindrical upper body portion having a lower end opened, and a second opening having an upper end opened and a side surface screwed into the first screw portion. A lower cylindrical portion having a substantially cylindrical lower torso having a threaded portion and a bottom portion that is continuous with the lower torso and has a closed lower end; and the first threaded portion and the second threaded portion. Is characterized in that the contents are accommodated in the interior formed by screwing.

  The invention according to claim 2 relates to the variable volume container according to claim 1, wherein one of the first screw portion and the second screw portion is softer than the other material. It is characterized by that.

  According to the present invention, the configuration is simple and inexpensive, and the capacity of the container can be finely changed by an easy operation regardless of the grip strength and skill of the user. For this reason, changes in the taste, aroma, flavor and the like of the beverage after opening the container can be suppressed.

It is a schematic sectional drawing which shows the structure of the capacity | capacitance variable container which concerns on Embodiment 1 of this invention. It is a schematic sectional drawing which shows the structure of the capacity | capacitance variable container of the state which changed the capacity | capacitance from the state shown in FIG. It is a schematic sectional drawing which shows the structure of the capacity | capacitance variable container which concerns on Embodiment 2 of this invention. It is a top view which shows an example of a structure of the operation part which comprises the capacity | capacitance variable container shown in FIG. It is a schematic sectional drawing which shows the structure of the capacity | capacitance variable container of the state which changed the capacity | capacitance from the state shown in FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a schematic cross-sectional view showing the structure of a variable capacity container 1 according to Embodiment 1 of the present invention. The variable capacity container 1 according to the first embodiment is generally configured by a container body 11 and a cap 12.

  The container body 11 is configured by being divided into an upper housing portion 21 and a lower housing portion 22. The upper housing portion 21 includes a mouth portion 31 having a male screw portion 31 a formed on the outer peripheral portion, a neck portion 32 formed by being inserted through a lower portion of the mouth portion 31, and a shoulder portion formed continuously from the lower portion of the neck portion 32. 33 and an upper body portion 34 formed continuously below the shoulder portion 33. An internal thread portion 34 a is formed on the inner peripheral portion of the upper body portion 34. Moreover, the lower end 34b of the upper trunk | drum 34 is opening.

  Since the male thread part 31a and the female thread part 34a are formed in the cross section of the mouth part 31 and the upper trunk | drum 34, respectively, it is preferable that it is a substantially circular shape. On the other hand, the cross section of the neck portion 32 and the shoulder portion 33 is not limited to a substantially circular shape, but may be a substantially elliptical shape, a substantially triangular shape, a substantially rectangular shape, or a substantially polygonal shape.

  The lower housing part 22 includes a lower body part 41 having an open upper end 41a, a bottom part 42 continuously formed at the lower part of the lower body part 41 and closed at the lower end, and a male screw provided on an outer peripheral part 41b of the lower body part 41. Part 43. The bottom part 42 includes a flat grounding part 42a continuous to the lower body part 41, and a concave part 42b whose longitudinal section bulges into a substantially dome shape inside the lower body part 41 inside the grounding part 42a. The container body 11 is formed so as to be able to stand on its own by the grounding portion 42a. The male screw portion 43 is screwed into a female screw portion 34 a formed on the inner peripheral portion of the upper trunk portion 34.

  The cross section of the lower body portion 41 and the male screw portion 43 is preferably substantially circular because the male screw portion 43 is screwed into the female screw portion 34a. On the other hand, the cross section of the bottom portion 42 is not limited to a substantially circular shape, but may be a substantially elliptical shape, a substantially triangular shape, a substantially rectangular shape, or a substantially polygonal shape.

  The cap 12 has a substantially cylindrical shape as a whole. The cap 12 has an upper surface 12a closed and a lower surface 12b opened. On the inner periphery of the cap 12, although not shown, a female screw portion that is screwed into a male screw portion 31 a formed on the outer peripheral portion of the mouth portion 31 of the upper housing portion 21 constituting the container main body 11 is formed.

  Note that the screw forming directions of the upper housing portion 21 and the lower housing portion 22 may be the same as or different from the screw forming directions of the cap 12 and the mouth portion 31. Usually, the screw 12 and the mouth portion 31 are formed in a screw formation direction, which is a so-called “right-handed screw” that is fastened when the cap 12 is rotated clockwise with respect to the mouth portion 31. Accordingly, the direction in which the screws of the upper housing portion 21 and the lower housing portion 22 are formed is lowered even when the upper housing portion 21 is rotated clockwise with respect to the lower housing portion 22. In contrast, a so-called “left-handed screw” that descends when the upper housing portion 21 is rotated counterclockwise may be used.

  Next, the material of the variable capacity container 1 having the above-described structure will be described. It is preferable that the lower trunk | drum 41 and the bottom part 42 are all the same raw materials among the upper accommodating part 21 whole and the lower accommodating part 22. FIG. These materials are, for example, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polycarbonate, polyarylate, thermoplastic polyesters such as copolymers thereof, blends of these resins or other resins. In particular, an ethylene terephthalate thermoplastic polyester such as polyethylene terephthalate is suitable. Further, acrylonitrile resin, polypropylene, propylene-ethylene copolymer, polyethylene and the like can also be used. The entire upper accommodating portion 21 is integrally formed by using these materials, for example, by a biaxial stretch blow molding method or the like.

  On the other hand, it is preferable that the male screw part 43 of the lower accommodating part 22 and the cap 12 are the same materials. As these materials, for example, in view of the sealing properties of beverages contained in containers, polyethylene or polypropylene polyolefins softer than the polyethylene terephthalate or the like are suitable. In this case, with respect to the lower housing part 22, the lower body part 41 and the bottom part 42 are integrally formed by, for example, a biaxial stretch blow molding method or the like, and after the male screw part 43 is formed, the outer peripheral part 41b of the lower body part 41 The male threaded portion 43 is joined to the joint by adhesion, fusion or the like.

  In addition, if sufficient durability is obtained in addition to the above sealing property, for example, the resin composition disclosed in Japanese Patent Application Laid-Open No. 2008-230646 is used for the entire upper housing portion 21, the lower body portion 41, and the bottom portion. 42 may be used as a material for the male screw portion 43 and the cap 12. In this case, the whole lower accommodating part 22 can be formed by integral molding.

  This resin composition contains aromatic polyester resin (A) 30 to 90% by weight, polyetherester block copolymer (B) 50 to 5% by weight and ionomer resin (C) 20 to 5% by weight as main components. It is a waste.

Next, an example of a method of using the variable capacity container 1 having the above structure will be described with reference to FIGS. First, the beverage accommodated in the variable capacity container 1 is filled up to a substantially middle portion of the neck portion 32 of FIG. 1 at the time of purchase. Here, assuming that the cross section of the neck portion 32 is substantially circular, the radius thereof is r ₁ , and the circumferential ratio is π, the contact area S ₁ with the beverage air at the time of purchase is expressed by the equation (1). expressed.
S ₁ = π × r ₁ ² (1)

Then, it is assumed that the beverage purchaser drinks the beverage and the beverage remaining in the variable capacity container 1 has decreased to the vicinity of the upper end 41 a of the lower body portion 41 constituting the lower housing portion 22. Here, the cross section of the lower body part 41 is substantially circular, and when the radius is r ₂ , the contact area S ₂ of the remaining beverage with air is expressed by Expression (2).
S ₂ = π × r ₂ ² (2)

The ratio of the contact area _{S 1} and the contact area _{S 2} is represented by the formula (3).
S ₂ / S ₂ = (π × r ₂ ² ) / (π × r ₁ ² ) = r ₂ ² / r ₁ ² (3)
For example, if the radius r ₁ is 2.5 mm and the radius r ₂ is 25 mm, the contact area S ₂ with the remaining beverage air is 100 times the contact area S ₁ with the beverage air at the time of purchase. End up.

Furthermore, the volume of air capacity variable container 1, at the time of purchase against the merely multiplied by the substantially half of the height of the neck portion 32 to the contact area S _1, and the volume at the time of purchase at the moment, the contact area S ₂ is multiplied by the distance from the shoulder 33 to the vicinity of the upper end 41a of the lower torso 22, so that the space in which the volatile substances in the beverage volatilize is expanded accordingly.

  Therefore, the purchaser places the variable volume container 1 on the table, holds the bottom portion 42 with one hand, and holds the upper storage portion 21 with the other hand and rotates it clockwise or counterclockwise. . Thereby, the upper accommodating part 21 descends gradually. The purchaser repeats the above operation while visually observing the liquid level in the variable capacity container 1, and ends the above operation when the liquid level reaches the neck 32. FIG. 2 shows a state where the lower end 34 b of the upper body portion 34 has reached the lower end 43 a of the male screw portion 43.

However, the purchaser pays attention to the liquid level of the beverage in the variable volume container 1 when drinking the beverage in the variable volume container 1, and stores the upper part so that the liquid level always exists in the neck 32. The above operation for lowering the portion 21 may be performed. Thus, it is possible to it is possible to retain the contact area with air of beverage remaining always area S _1, the air layer of variable volume container 1 is also always kept small.

  That is, according to Embodiment 1 of the present invention, the configuration is simple and inexpensive, and the capacity of the container can be finely changed by an easy operation regardless of the grip strength and skill of the user. For this reason, changes in the taste, fragrance, flavor, etc. of the beverage in the variable capacity container 1 after the container is opened can be suppressed, and the undrinked beverage can be stored for a certain period.

Embodiment 2. FIG.
FIG. 3 is a schematic cross-sectional view showing the structure of the variable capacity container 2 according to Embodiment 2 of the present invention. The variable capacity container 2 according to the first embodiment is roughly configured by a container body 13 and a cap 12 according to the first embodiment.

  The container body 13 is divided into an upper housing part 23 and a lower housing part 24. The upper housing portion 23 includes a mouth portion 35 having a male screw portion 35 a formed on the outer peripheral portion, a neck portion 36 formed by being inserted through a lower portion of the mouth portion 35, and a shoulder portion formed continuously below the neck portion 36. 37, an upper body portion 38 formed continuously below the shoulder portion 37, and leg portions 39 formed continuously below the upper body portion 38. A female screw portion 38 a is formed on the inner peripheral portion of the upper body portion 38. Further, the lower end 39a of the leg portion 39 is open. The container body 13 is formed so as to be able to stand on its own by the leg portions 39.

  Since the male thread part 35a and the female thread part 38a are formed in the cross section of the mouth part 35 and the upper trunk | drum 38, it is preferable that it is a substantially circular shape. On the other hand, the cross section of the neck portion 36, the shoulder portion 37, and the leg portion 39 is not limited to a substantially circular shape, but may be a substantially elliptical shape, a substantially triangular shape, a substantially rectangular shape, or a substantially polygonal shape.

  The lower housing portion 24 is provided in a lower body portion 44 whose upper end 44 a is open and whose lower end is closed, an operation portion 45 formed continuously from the lower end of the lower body portion 44, and an outer peripheral portion 44 b of the lower body portion 44. The male screw portion 46 is formed. The operation portion 45 has a substantially columnar shape, and a substantially cylindrical recess 45 a having a diameter of about 10 mm is formed so as to be offset from the center of the operation portion 45, as shown in FIG. 4. The male screw portion 46 is screwed into a female screw portion 38 a formed on the inner peripheral portion of the upper trunk portion 38.

  The cross sections of the lower body portion 44 and the male screw portion 46 are preferably substantially circular because the male screw portion 46 is screwed into the female screw portion 38a.

  Note that the screw forming directions of the upper housing portion 23 and the lower housing portion 24 may be the same as or different from the screw forming directions of the cap 12 and the mouth portion 35. Normally, the screw 12 and the mouth portion 35 are formed with a so-called “right-handed screw” that is fastened when the cap 12 is rotated clockwise with respect to the mouth portion 35. Therefore, the direction in which the upper housing portion 23 and the lower housing portion 24 are formed is increased when the lower housing portion 24 is rotated clockwise with respect to the upper housing portion 23, even in a so-called “right-handed screw”. In contrast, a so-called “left-handed screw” that rises when the lower housing portion 24 is rotated counterclockwise may be used.

  The material of the variable capacity container 2 having the above-described structure may be the same as the material of the variable capacity container 1 according to the first embodiment.

Next, an example of how to use the variable volume container 2 having the above structure will be described with reference to FIGS. First, the beverage accommodated in the variable volume container 2 is filled up to a substantially middle portion of the neck portion 36 in FIG. 3 at the time of purchase. Here, assuming that the cross section of the neck 36 is substantially circular, the radius thereof is r ₁ , and the circumferential ratio is π, the contact area S ₁ with the beverage air at the time of purchase is the above-described embodiment. 1 is represented by Formula (1).

Then, it is assumed that the beverage purchaser drinks the beverage and the beverage remaining in the variable capacity container 2 has decreased to the vicinity of the upper end 44 a of the lower trunk portion 44 constituting the lower housing portion 24. Here, the cross section of the lower body portion 44 is substantially circular shape, when the radius r _2, the contact area S ₂ with air beverage remaining the formula according to the first embodiment described above (2) It is represented by

The ratio of the contact area S ₂ and the contact area S ₁ is represented by the formula (3) according to the first embodiment described above.
For example, if the radius r ₁ is 2.5 mm and the radius r ₂ is 50 mm, the contact area S ₂ with the remaining beverage air is 100 times the contact area S ₁ with the beverage air at the time of purchase. End up.

Furthermore, the air volume in the variable volume container 2, at the time of purchase against the merely multiplied by approximately half the height of the neck portion 36 to the contact area S _1, and the volume at the time of purchase at the moment, the contact area S ₂ is multiplied by the distance from the shoulder portion 37 to the vicinity of the upper end 44a of the lower torso portion 44. Therefore, the space in which the volatile substances in the beverage volatilize is expanded accordingly.

  Therefore, the purchaser grasps the outer periphery of the operation unit 45 with the other hand while holding the neck portion 36 and the shoulder portion 37 of the variable capacity container 2 with one hand, or a bar-like member such as a ballpoint pen in the concave portion 45a. And the operation unit 45 is rotated clockwise or counterclockwise. Thereby, the lower accommodating part 24 raises gradually. The purchaser repeats the above operation while visually observing the liquid level in the variable capacity container 2, and ends the above operation when the liquid level reaches the neck 36. FIG. 5 shows a state where the upper end 44a of the lower body portion 44 has reached the upper end 38b of the female screw portion 38a.

However, the purchaser pays attention to the liquid level of the beverage in the variable volume container 2 when drinking the beverage in the variable volume container 2, and stores the lower part so that the liquid level always exists in the neck 36. You may perform the said operation | movement which raises the part 24. FIG. Thus, it is possible to it is possible to retain the contact area with air of beverage remaining always area S _1, the air layer within the variable volume container 2 also always kept small.

  That is, according to the second embodiment of the present invention, the configuration is simple and inexpensive, and the capacity of the container can be finely changed by an easy operation regardless of the grip strength and skill of the user. For this reason, changes in the taste, fragrance, flavor, and the like of the beverage in the variable capacity container 2 after the container is opened can be suppressed, and the undrinked beverage can be stored for a certain period.

  In addition, when the variable capacity container 2 can stand alone even when only the operation unit 45 is grounded on the table or the like, or when the variable capacity container 2 can stand alone even when the middle part of the female screw portion 38a is grounded on the table or the like The female screw portion 38a that does not contain a beverage may be configured to be cuttable. If comprised in this way, since the capacity | capacitance of the whole capacity | capacitance variable container 2 is reduced, it is convenient, without taking a place for preservation | save and carrying of a drink.

Embodiment 3 FIG.
In the above-described first embodiment, the example in which the concave portion 42b whose longitudinal section bulges into a substantially dome shape is provided in the lower body portion 41 is not limited to this. The recess 42b is provided in order to widen the range in which the capacity of the variable capacity container 1 can be varied as much as possible. Therefore, if the range in which the capacity of the variable capacity container 1 can be varied by another method can be widened, the concave portion 42b need not be provided for this purpose.

Embodiment 4 FIG.
In each of the above-described embodiments, an example in which nothing is formed on the outer periphery of the upper body portions 34 and 38 has been described, but the present invention is not limited to this. For example, in consideration of operability when changing the capacity, recesses corresponding to the fingers of the hand, for example, the thumb and the other four fingers are formed on the outer periphery of the upper torso portions 34 and 38. May be.

Embodiment 5 FIG.
In each above-mentioned embodiment, although the raw material of the container main bodies 11 and 13 whole showed the example which is synthetic resins, such as the said polyethylene terephthalate, it is not limited to this. For example, the material of the container bodies 11 and 13 as a whole may be made of glass, ceramics, metal, or the like, and the material of the female screw portions 34a and 38a and the male screw portions 43 and 46 may be a synthetic resin such as polyethylene terephthalate. In this case, it is preferable in terms of hermeticity that the female screw portion 34a or 38a and the male screw portion 43 or 46 have one material softer than the other material. For example, when the material of the female screw portions 34a and 38a is polyethylene terephthalate, the material of the male screw portions 43 and 46 is a polyolefin of polyethylene or polypropylene that is softer than polyethylene terephthalate.

  For example, female threaded parts 34a and 38a made of polyethylene terephthalate or the like are joined to the inner circumferences of upper body parts 34 and 38 made of glass, and male threaded parts 43 made of polyethylene or the like on the outer circumferences of lower body parts 41 and 44 made of glass. And 46 may be joined.

Embodiment 6 FIG.
In each of the above-described embodiments, the example in which both the female screw portions 34a and 38a and the male screw portions 43 and 46 are formed in advance has been described. However, the present invention is not limited to this. For example, one of the female screw portions 34a and 38a or the male screw portions 43 and 46 may not be formed, and a screw portion that is not formed by the operation of changing the capacity may be formed by threading. If comprised in this way, while adhesiveness will become favorable, a coupling | bond part will become difficult to remove | deviate.

Embodiment 7 FIG.
In each of the above-described embodiments, the internal thread portions 34a and 38a are formed on the inner periphery of the upper body portions 34 and 38, and the external thread portions 43 and 46 are formed on the outer periphery of the lower body portions 41 and 44. However, the present invention is not limited to this. For example, a male screw portion may be formed on the outer periphery of the upper body portions 34 and 38 and a female screw portion may be formed on the inner periphery of the lower body portions 41 and 44.

Embodiment 8 FIG.
Further, in the variable capacity container 1, for example, a rubber belt, a surface, or the like is formed on a portion where the lower end 34 b of the upper body portion 34 constituting the upper housing portion 21 and the lower body portion 41 constituting the lower housing portion 22 abut. A belt with a fastener may be fastened.
On the other hand, in the variable capacity container 2, for example, a rubber ring is fitted to a portion where the outer periphery of the lower housing portion 24 and the inner peripheral portion of the upper trunk portion 38 constituting the upper housing portion 23 are close to each other. Anyway.
If comprised in this way, while airtightness will become favorable, a coupling | bond part will become difficult to remove | deviate.

Embodiment 9 FIG.
In the first embodiment, the neck portion 32, the shoulder portion 33, and the upper body portion 34 are sequentially formed coaxially in the lower portion of the mouth portion 31, and in the second embodiment, the neck portion 36 is formed in the lower portion of the mouth portion 35. Although the example in which the shoulder portion 37 and the upper body portion 38 are sequentially formed on the same axis is shown, the present invention is not limited to this. For example, in the above-described first embodiment, the mouth portion 31 and the neck portion 32 are formed so as to be orthogonal to the shoulder portion 33 and the upper trunk portion 34, and in the above-described second embodiment, the shoulder portion 37 and the upper trunk portion 38 are formed. Alternatively, the mouth 35 and the neck 36 may be formed so as to be orthogonal to each other. If comprised in this way, the capacity | capacitance variable containers 1 and 2 which accommodated drinks, such as wine, can be laid down and accommodated in a wine cellar etc., for example.

As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and the design can be changed without departing from the scope of the present invention. Is included in the present invention.
For example, in each of the above-described embodiments, the example in which the beverage is accommodated in the variable capacity containers 1 and 2 has been shown. However, the contents to be accommodated in the variable capacity containers 1 and 2 are not limited to beverages, but liquids other than drinking Alternatively, powder or granules may be used.
In addition, each of the above-described embodiments can divert each other's technology as long as there is no particular contradiction or problem in its purpose and configuration.

  DESCRIPTION OF SYMBOLS 1,2 ... Volume variable container, 11,13 ... Container main body, 12 ... Cap, 12a ... Upper surface, 12b ... Lower surface, 21, 23 ... Upper accommodating part, 22, 24 ... Lower accommodating part, 31, 35 ... Mouth part, 31a, 35a ... male screw part, 32, 36 ... neck part, 33, 37 ... shoulder part, 34, 38 ... upper body part, 34a, 38a ... female screw part, 34b ... lower end, 38b ... upper end, 39 ... leg part, 39a ... Lower end, 41, 44 ... Lower body part, 41a, 44a ... Upper end, 41b, 44b ... Outer peripheral part, 42 ... Bottom part, 42a ... Grounding part, 42b ... Recessed part, 43, 46 ... Male thread part, 43a ... Lower end, 45 ... Operation Part, 45a ... concave part

In order to solve the above-described problem, a variable capacity container according to the first aspect of the present invention includes a mouth, a neck formed through the lower portion of the mouth, a lower portion of the neck , A lower portion having an upper housing portion having a substantially cylindrical upper body portion having an open end , a substantially cylindrical lower body portion having an upper end opened, and a bottom portion that is continuous with the lower body portion and has a lower end closed. A material softer than the material of the other side surface is used for one side surface of the side surface of the upper body portion or the side surface of the lower body portion; A threaded portion is formed, and in a state where the lower end of the upper accommodating portion and the upper end of the lower accommodating portion are coupled, one of the upper accommodating portion and the lower accommodating portion is changed to the other in order to reduce the capacity. By rotating the first screw portion, the second screw portion screwed with the first screw portion is It is characterized by being configured to be formed on the surface.

Further, the invention according to claim 2 relates to the variable capacity container according to claim 1, wherein the upper trunk portion not coupled to the lower accommodating portion or the lower trunk portion not coupled to the upper accommodating portion is: It is configured to be cuttable .

Claims (2)

A mouth portion, a neck portion formed through the lower portion of the mouth portion, a substantially cylindrical upper body portion having a first threaded portion on a side surface and having a lower end opened; An upper housing with
An upper end is opened, and a substantially cylindrical lower body portion having a second screw portion screwed into the first screw portion on a side surface, and a bottom portion continuous with the lower body portion and closed at the lower end. A lower housing portion,
A capacity variable container, wherein the contents are accommodated in an inside formed by screwing the first screw portion and the second screw portion.   2. The variable capacity container according to claim 1, wherein one of the first screw portion and the second screw portion is softer than the other material.

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