JP2016116628A - Liquid container, and method for assembling the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid container having pleasant texture, excellently retaining sanitation when soup or the like as content is stored, and free from lowering adhesion between a male screw part and a female screw part, and a method for assembling the same.SOLUTION: Liquid containers 100 and 110 include a bottomed inner cylindrical wall part 111 and a bottomed outer cylindrical wall part 112. The bottomed inner cylindrical wall part has a first cylindrical wall part 111a, a curved folding part 111d, and a first bottom wall part 111b. The first cylindrical wall part shows a cylindrical shape. The curved folding part is folded back while being curved from the upper end of the first cylindrical wall part to the outside. The first bottom wall part covers the lower end opening of the first cylindrical wall part. The bottomed outer cylindrical wall part has a second cylindrical wall part 112a, a male screw part 112c and a second bottom wall part 112b. The second cylindrical wall part shows a cylindrical shape. The second bottom wall part covers the lower end opening of the cylindrical wall part. An upper end 112d of the second cylindrical wall part is connected to the curved folding part of the bottomed inner cylindrical wall part.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a liquid container and an assembling method thereof.

  In the past, proposals have been made to smooth the mouthfeel of the vacuum double container by curling the upper end of the outer cylindrical wall portion inward (for example, Japanese Unexamined Patent Application Publication No. 2014-000110 and Japanese Unexamined Patent Application Publication No. 2014). -000261 publication and Unexamined-Japanese-Patent No. 2014-000262 etc.). In such a case, a female thread portion is formed at the upper end portion of the inner cylindrical wall portion so as not to deform the curling portion (to prevent welding accuracy from being lowered). The female screw portion is designed to be able to be screwed with the male screw portion of the lid.

JP 2014-000110 A Japanese Unexamined Patent Publication No. 2014-000261 Japanese Patent Application Laid-Open No. 2014-000262

  However, when the female thread portion is formed in the inner cylindrical wall portion in this way, for example, when the contained liquid is relatively high in viscosity such as soup and contains a large amount of solids, it is used. Sometimes soup or the like adheres to the female screw part, and if left as it is, the female screw part becomes unsanitary, or when the male screw part of the lid is screwed into the female screw part, the male screw part and the female screw part Adhesiveness will decrease. As a countermeasure against such a problem, it is conceivable to simply form a male screw part on the outer cylinder wall part. However, as described above, the upper end part of the outer cylinder wall part is curled, so that If an attempt is made to form the male screw portion, the curling portion is deformed, resulting in a problem that the welding accuracy is lowered. Therefore, the above-mentioned countermeasure plan cannot be adopted as an effective one.

  The problem of the present invention is that the mouth feel is good and even when soup is stored as the contents, it is possible to maintain good hygiene and to reduce the adhesion between the male screw part and the female screw part. Furthermore, another object is to provide a liquid container in which an inner cylindrical wall portion and an outer cylindrical wall portion are satisfactorily joined and an assembling method thereof.

  The liquid container according to the first aspect of the present invention includes a bottomed inner cylindrical wall portion and a bottomed outer cylindrical wall portion. That is, this liquid container is a vacuum double container. The bottomed inner cylindrical wall portion corresponds to the first cylindrical wall portion, the curved folded portion (corresponding to the “curling portion” in the “Background Art” column and the “Problem to be Solved by the Invention” column). 1 has a bottom wall. The first cylindrical wall portion has a cylindrical shape. The curved folded portion is folded while being curved outward from the upper end of the first cylindrical wall portion. The first bottom wall portion covers the lower end opening of the first cylindrical wall portion. The bottomed outer cylindrical wall portion has a second cylindrical wall portion, a male screw portion, and a second bottom wall portion. The second cylindrical wall portion has a cylindrical shape. The second bottom wall portion covers the lower end opening of the second cylindrical wall portion. And the upper end part of the 2nd cylinder wall part is joined to the curve folding | turning part of a bottomed inner cylinder wall part. In addition, in a bottomed outer cylinder wall part, an upper end part is located above a male screw part.

  In this liquid container, as described above, the curved folded portion corresponding to the curling portion is provided on the bottomed inner cylindrical wall portion, and the male screw portion is provided on the bottomed outer cylindrical wall portion. Therefore, in this liquid container, not only can the male screw part be formed without deforming the curved folded part, but there is no need to form the female screw part on the bottomed inner cylinder wall part, and the bottomed inner cylinder The inner wall surface of the wall portion can be made smooth. Therefore, this liquid container has a good mouthfeel and can maintain good hygiene even when soup or the like is contained as the contents, and reduce the adhesion between the male screw portion and the female screw portion. The bottomed inner cylindrical wall portion and the bottomed outer cylindrical wall portion are joined well.

  The liquid container according to the second aspect of the present invention is the liquid container according to the first aspect, wherein the outer diameter of the curved folded portion of the bottomed inner cylindrical wall portion is that of the second cylindrical wall portion of the bottomed outer cylindrical wall portion. It is larger than the inner diameter of the lower end. Moreover, the outer diameter of the lower end of the bottomed inner cylindrical wall part is smaller than the inner diameter of the upper end of the bottomed outer cylindrical wall part.

  For this reason, in the assembly process of the liquid container, the bottomed inner cylindrical wall portion is necessarily inserted into the second cylindrical wall portion from above the second cylindrical wall portion with the first bottom wall portion facing downward. Will be. Therefore, in the assembly process of the liquid container, the bottom wall portion (that is, the second bottom wall portion) can be formed in advance on the second cylindrical wall portion. Therefore, this liquid container can raise the freedom degree of design.

  A liquid container according to a third aspect of the present invention is the liquid container according to the first aspect or the second aspect, and in the second cylindrical wall portion, the lower end portion extends inward while being curved in a longitudinal sectional view. Yes. Note that there is no seam in the second cylindrical wall portion.

  For this reason, in this liquid container, the designability of a 2nd cylinder wall part can be improved.

  The method for assembling a liquid container according to the fourth aspect of the present invention includes an insertion step, a butting step, and a joining step. In addition, before progressing to an insertion process, a bottomed inner cylinder wall and an outer cylinder wall are prepared. The bottomed inner cylindrical wall has a first cylindrical wall portion, a curved folded portion, and a first bottom wall portion. The first cylindrical wall portion has a cylindrical shape. The curved folded portion is folded while being curved outward from the upper end of the first cylindrical wall portion. The first bottom wall portion covers the lower end opening of the first cylindrical wall portion. The outer cylinder wall has a second cylinder wall part and a male screw part. The second cylindrical wall portion has a cylindrical shape. In the insertion step, the bottomed inner cylindrical wall is inserted into the outer cylindrical wall from above the outer cylindrical wall with the first bottom wall portion facing downward. In the butting step, the curved folded portion and the upper end portion of the second cylindrical wall portion are butted. In the joining step, the curved folded portion and the upper end portion of the second cylindrical wall portion are joined.

  In this liquid container assembling method, in the inserting step, the bottomed inner cylindrical wall is inserted into the outer cylindrical wall from above the outer cylindrical wall with the first bottom wall portion facing downward. For this reason, in this liquid container assembling method, the bottom wall portion (that is, the second bottom wall portion) can be formed in advance on the second cylindrical wall portion. Therefore, in this liquid container assembling method, the degree of freedom in designing the liquid container can be increased. Further, in this method for assembling the liquid container, the curved folded portion corresponding to the curling portion is provided in the bottomed inner cylindrical wall portion, and the male screw portion is provided in the bottomed outer cylindrical wall portion. For this reason, in this method for assembling the liquid container, the male screw portion can be formed without deforming the curved folded portion. Therefore, in this liquid container assembling method, the bottomed inner cylindrical wall portion and the bottomed outer cylindrical wall portion can be satisfactorily joined.

It is a longitudinal cross-sectional view of the liquid container which concerns on embodiment of this invention. It is a longitudinal cross-sectional view of the container main body which comprises the liquid container which concerns on embodiment of this invention. It is an enlarged view of A part of FIG. FIG. 4 is an enlarged view of a portion B in FIG. 3. It is an exploded sectional view of a container main part which constitutes a liquid container concerning an embodiment of the invention.

<Configuration of Liquid Container According to Embodiment of the Present Invention>
As shown in FIG. 1, the liquid container 100 according to the embodiment of the present invention mainly includes a container body 110 and a lid body 120. Hereinafter, the container main body 110 and the lid 120 will be described in detail.

(1) Container Main Body The container main body 110 is a so-called vacuum double container, and is mainly formed of a bottomed inner cylinder 111 and a bottomed outer cylinder 112 as shown in FIG. Specifically, the bent portion (see reference numeral 111d in FIG. 3 for details) of the inner cylinder 111 and the upper end wall portion of the outer cylinder 112 (see FIG. 3 for details) so that a space SP is formed between the inner cylinder 111 and the outer cylinder 112. In detail, the container main body 110 is formed by joining the space SP to a vacuum state after joining to the reference numeral 112d in FIG.

  The inner cylinder 111 is a member formed of a steel material such as SUS316L, SUS316, and SUS304L, or a metal material such as titanium, and as shown in FIG. 2, mainly, the inner cylinder side wall portion 111 a and the inner cylinder bottom wall A portion 111b, an upper wall portion 111c, a curved folded portion 111d, and a step portion 111e are formed. The inner cylinder side wall 111a has a cylindrical shape, as shown in FIG. In the inner cylinder bottom wall 111b, the central portion CT is raised in a spherical shape toward the opening side, and the corner CR has a concave arc shape. The diameter of the spherical surface of the central portion CT is made larger than the diameter of the arc of the corner portion CR. The upper wall portion 111c has a substantially cylindrical shape, and the opening diameter thereof is larger than the opening diameter of the inner cylinder side wall portion 111a. Further, the upper wall portion 111c is continuous with the inner cylinder side wall portion 111a through a step portion 111e. As shown in FIG. 3, the curved folded portion 111 d is a portion formed by curling (in this embodiment, curling with a vertical cross-section of the vertical cross section), and the upper end of the upper wall 111 c It is folded back while curving outward. The step portion 111e is a portion having a reverse truncated conical cylinder shape (inverted truncated cone shape), and as described above, is located between the inner cylinder side wall portion 111a and the upper wall portion 111c, and the inner cylinder side wall portion 111a. And the upper wall part 111c are connected. The step 111e is positioned so as to contact the packing PK attached to the lid 120 when the lid 120 is attached to the container body 110 (see FIG. 1).

  The outer cylinder 112 is a member formed of a steel material such as SUS316L, SUS316, and SUS304L, or a metal material such as titanium, and mainly includes an outer cylinder side wall 112a and an outer cylinder bottom wall as shown in FIG. A portion 112b, a male screw portion 112c, and an upper end wall portion 112d are formed. The outer cylinder side wall portion 112a mainly has a reverse truncated conical cylinder shape (inverted truncated cone cylinder shape), but as shown in FIGS. 2 and 4, the lower end portion 112e is curved toward the inside. It extends. That is, there is no seam on the side surface of the outer cylinder side wall 112a. The outer cylinder bottom wall portion 112b has a substantially disk shape, and is welded at the inner periphery of the outer cylinder side wall portion 112a (the location indicated by the symbol MC in FIG. 4) as shown in FIG. The male screw portion 112 c is formed on the upper portion of the outer cylinder side wall portion 112 a and can be screwed into a female screw portion 123 c (described later) of the lid 120. As shown in FIGS. 2 and 3, the upper end wall portion 112d is a portion located at the upper end portion of the outer cylinder 112, and from the inner side to the inner peripheral surface of the outer wall portion of the curved folded portion 111d of the inner cylinder 111. It is designed to contact and is joined to the curved folded portion 111d.

(2) Lid As shown in FIG. 1, the lid 120 is mainly formed from an inner lid 121, an outer lid 122, a side wall 123, and an accommodation wall 124.

  As shown in FIG. 1, the accommodating wall portion 124 is a bottomed cylindrical body. When the outer lid portion 122 is put on the accommodation wall portion 124, a space SS is generated between the accommodation wall portion 124 and the outer lid portion 122. In the liquid container 100 according to the present embodiment, this space SS is used as a storage space for a folding spoon (not shown).

  As shown in FIG. 1, the inner lid 121 is a portion attached directly below the housing wall 124, and is mainly formed from a main body 121 a, a packing attachment 121 b, and a side wall attachment 121 c. ing. The main body 121a is a substantially disk-shaped part, and as shown in FIG. 1, a slit SL is formed at the center. A pressure release valve 125 is disposed in the opening. The packing attachment part 121b is a part extending outward from the outer edge of the disk part 121a. As shown in FIG. 1, a packing PK is attached to the packing attachment portion 121b. As shown in FIG. 1, the side wall portion attaching portion 121 c is a portion extending upward from the packing attaching portion 121 b and plays a role of attaching the side wall portion 123 via the connector 126.

  The side wall portion 123 has a substantially cylindrical shape, and is mainly formed of a main body portion 123a, a connector mounting portion 123b, and a female screw portion 123c as shown in FIG. The main body portion 123a has a substantially cylindrical shape. As shown in FIG. 1, the connector attachment portion 123 b is a portion connected to the connector 126, and connects the inner lid portion 121 via the connector 126. As shown in FIG. 1, the female screw portion 123c is formed on the inner peripheral surface of the main body portion 123a. As described above, the male screw portion 112c of the container main body 110 is screwed into the female screw portion 121c.

  The outer lid part 122 is a member that covers the upper part of the side wall part 123 and the housing wall part 124, and is mainly formed of a top wall part 122a and a side wall part 122b as shown in FIG. The top wall portion 122a has a substantially disk shape. The side wall portion 122b has a substantially cylindrical shape.

<Assembly Method of Container Body According to Embodiment of Present Invention>
The container main body 110 according to the embodiment of the present invention is assembled through an insertion process, a butting process, and a welding process.

  In the insertion step, as shown in FIG. 5, the inner cylinder 111 and the outer cylinder before the outer cylinder bottom wall 112 b is welded (hereinafter referred to as “outer cylinder part”) with the inner cylinder bottom wall 111 b facing downward. It is inserted into the outer cylinder part P12 or the outer cylinder 112 from above the P12 or the outer cylinder 112. In the container body 110 according to the present embodiment, the outer diameter of the curved folded portion 111d of the inner cylinder 111 is larger than the inner diameter of the opening OP at the lower end of the outer cylinder part P12 or the outer cylinder 112, and the lower end of the inner cylinder 111 Is smaller than the inner diameter of the outer cylinder part P12 or the upper end wall 112d of the outer cylinder 112. Therefore, in order to assemble the container body 110 according to the embodiment of the present invention, the inner cylinder 111 cannot be inserted from below the outer cylinder part P12 or the outer cylinder 112, and the inner cylinder 111 cannot be inserted from the outer cylinder part P12 or the outer cylinder part P12. It must be inserted from above the outer cylinder 112. In the butting step, the curved folded portion 111d of the inner cylinder 111 and the upper end wall 112d of the outer cylinder 112 are butted. In the welding process, the curved folded portion 111d and the upper end wall portion 112d are welded.

  In addition, when the outer cylinder part P12 is used in an insertion process, the outer cylinder bottom wall part 112b may be welded to the outer cylinder part P12 at any timing.

<Characteristics of the liquid container according to the embodiment of the present invention>
(1)
In the container main body 110 according to the embodiment of the present invention, a curved folded portion 111d corresponding to a curling portion is provided in the inner cylinder 111, and a male screw portion 112c is provided in the outer cylinder 112. For this reason, in this container main body 110, not only can the male threaded portion 112c be formed without deforming the curved folded portion 111d, but there is no need to form a female threaded portion in the inner tube 111, and The inner wall surface can be made smooth. Therefore, this container main body 110 has a good mouthfeel and can maintain good hygiene even when soup or the like is stored as the contents, and reduces the adhesion between the male screw portion and the female screw portion. There is nothing.

(2)
In the container main body 110 according to the embodiment of the present invention, the outer surface of the outer cylinder 112 is seamless. For this reason, this container main body 110 has a high design property.

(3)
In the assembling method of the container main body 110 according to the embodiment of the present invention, in the insertion step, the inner cylinder 111 is removed from above the outer cylinder part P12 or the outer cylinder 112 with the inner cylinder bottom wall 111b facing downward. It is inserted into the cylinder part P12 or the outer cylinder 112. For this reason, in this assembly method of the container body 110, the outer cylinder 112 may be formed by welding the outer cylinder bottom wall 112b to the outer cylinder side wall 112a in advance. Therefore, in this method of assembling the container body 110, the degree of freedom in designing the container body 110 can be increased.

<Modification>
(A)
In the liquid container 100 according to the previous embodiment, the shape of the inner cylinder side wall 111a of the inner cylinder 111 is a cylindrical shape, but the shape of the inner cylinder side wall 111a of the inner cylinder 111 is a reverse truncated cone cylinder ( The shape may be an inverted frustoconical cylinder shape, or may be a shape obtained by combining an inverted truncated conical cylinder shape and a cylindrical shape. In the latter case, it is preferable that the shape of the joining position of the inverted truncated conical cylindrical body and the cylindrical body is a smooth shape such as an arc or the like (sectional view).

(B)
In the liquid container 100 according to the previous embodiment, the shape of the outer cylinder side wall portion 112a of the outer cylinder 112 is a reverse truncated cone cylinder shape (reverse truncated cone cylinder shape). The shape may be a cylindrical shape, or may be a shape obtained by combining a reverse truncated conical cylindrical shape and a cylindrical shape. In the latter case, it is preferable that the shape of the joining position of the inverted truncated conical cylindrical body and the cylindrical body is a smooth shape such as an arc or the like (sectional view).

100 Liquid container 110 Container body (liquid container)
111 Inner cylinder (bottomed inner cylinder wall)
111a Inner cylinder side wall (first cylinder wall)
111b Inner cylinder bottom wall (first bottom wall)
111d curved folded portion 112 outer cylinder (bottomed outer cylinder wall)
112a Outer cylinder side wall (second cylinder wall)
112b Outer cylinder bottom wall (second bottom wall)
112c Male thread part (Male thread part)
112d Upper end wall (upper end)

Claims (4)

A first cylindrical wall portion having a cylindrical shape, a curved folded portion that is folded while being curved outward from an upper end of the first cylindrical wall portion, and a first bottom wall portion that covers a lower end opening of the first cylindrical wall portion A bottomed inner cylindrical wall portion,
A second cylindrical wall portion having a cylindrical shape; a male screw portion; and a second bottom wall portion covering a lower end opening of the second cylindrical wall portion, wherein the upper end portion of the second cylindrical wall portion is the bottomed. A liquid container comprising: a bottomed outer cylindrical wall portion joined to a curved folded portion of the inner cylindrical wall portion. The outer diameter of the curved folded portion of the bottomed inner cylindrical wall portion is larger than the inner diameter of the lower end of the second cylindrical wall portion of the bottomed outer cylindrical wall portion,
The liquid container according to claim 1, wherein an outer diameter of a lower end of the bottomed inner cylindrical wall portion is smaller than an inner diameter of an upper end of the bottomed outer cylindrical wall portion. 3. The liquid container according to claim 1, wherein a lower end portion of the second cylindrical wall portion extends inward while being curved in a longitudinal sectional view. “A first tubular wall portion having a tubular shape, a curved folded portion that is folded while being curved outward from an upper end of the first tubular wall portion, and a first bottom wall that covers a lower end opening of the first tubular wall portion. The outer cylinder having a second cylindrical wall portion having a cylindrical shape and a male screw portion in a state where the first bottom wall portion of the bottomed inner cylindrical wall faces downward. Inserting into the outer cylinder wall from above the wall;
A butting step of butting the curved folded portion and the upper end portion of the second cylindrical wall portion;
A liquid container assembling method comprising: a joining step of joining the curved folded portion and the upper end portion of the second cylindrical wall portion.

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