JP2000051100A - Metallic vacuum thermal vessel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metallic vacuum thermal vessel allowing washing of the whole vessel. SOLUTION: An outer vessel 15 of a bottle body 11 is constituted by an integral molded product made of a single member. A temporary fixing part 15g capable of fixing a solid hole sealing material temporarily and an exhaust port 15h sealed due to melting, flowing down, stopping, and remaining of the hole sealing material fixed in the temporary fixing part 15g temporarily are formed in the outer vessel 15. Consequently, it is possible to wash the whole bottle body because the outer vessel 15 is integrally formed by a single material due to press molding and there is no connection part in which water enters.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal vacuum container.

[0002]

2. Description of the Related Art FIG. 13 is a sectional view showing the structure of a main body of a general metal vacuum insulation container, and FIG. 14 is an enlarged view of a main part of FIG. Referring to these drawings, the configuration of a general metal vacuum insulation container 1 includes a main body 4 integrally having an inner container 2 and an outer cylinder 3 that covers the inner container 2.

The upper ends of the containers 2 and 3 are welded and integrated. Further, a bottom cover 5 made of a member different from the bottom cover 5 is welded to a lower end portion of the outer cylinder 3. A depression 5b having an exhaust port 5a is formed in the bottom lid 5 in order to evacuate the air in the gap S formed between the containers 2 and 3 and perform vacuum sealing. The depressions 5b are multistaged and concave toward the inner container 2 (see FIG. 13). On the other hand,
A getter 6 is attached to the inner bottom surface of the bottom cover 5.

At the time of vacuum sealing, first, the container is inverted and the gap S between the inner container 2 and the outer container 3 is evacuated in the vacuum chamber, and then the brazing material 9 is placed in the depression 5b. In this state, the brazing material 9 is melted, and the exhaust port 5a
The exhaust port 5a is sealed by flowing down.
Here, in order to prevent the unfused brazing material 9 arranged in the depression 5b from falling out of the depression 5b, conventionally, a fall prevention plate 7 (only shown in FIG. 14) is provided on the lower surface of the bottom lid 5. Was attached.

[0005] Further, from the viewpoint of safety and aesthetics, in order to hide the welded portion P between the bottom cover 5 and the outer cylinder 3 and the fall prevention plate 7, the outer bottom cover 8 is indispensable in the conventional outer container 3. Was installed as a member. In FIG. 13, 12a
Is an exterior member attached to the upper end of the main body 3, 12b is a middle plug attached to the exterior member 12a, 12c is a cup detachably attached to the exterior member 12a to cover the inside plug 12b, 12d is an exterior bottom lid 8 The handle attached to the exterior member 12 and 12e are the exterior bottom lid 8 and the exterior member 12
And 12f are belts attached to the respective connecting portions.

[0006]

As described above, in the main body 4 of the conventional metal vacuum insulated container, the main body 4 is divided into three members (the inner container 2, the outer cylinder 3, and the bottom cover 5). Therefore, since it is necessary to hide at least the welded portion between the outer cylinder 3 and the bottom cover 5, the exterior bottom cover 8 is fixed as an essential member. The exterior bottom cover 8 was made of stainless steel or a resin molded product, and was merely pressed into the outer peripheral surface of the bottom cover 5. Therefore, in the conventional vacuum insulation container made of metal, it was not possible to wash the whole container because of the exterior bottom cover 8.

[0007] The present invention has been made in view of the above-mentioned problems, and has as its object to provide a metal vacuum insulation container that can be washed in a whole.

[0008]

In order to solve the above-mentioned problems, the present invention provides a metal vacuum container having a main body in which a metal inner container and an outer container have a double structure with a gap therebetween. A temporary fixing recess is formed by temporarily inserting a solid sealing material having a predetermined shape, and the sealing material temporarily fixed in the temporary fixing recess melts down at the time of heat sealing and is stored in the temporary fixing recess. A metal vacuum heat insulating container characterized in that a vent hole is formed, and a bottom portion of the outer container is partially formed with a solid sealing material stored in the temporarily-fixed concave portion to form an outer surface.

In the invention including the specific matter, a solid sealing material is temporarily fixed to the bottom of the outer container, and is further heated and melted by a known method, so that the solid sealing material is stopped at the exhaust port and the exhaust port is stopped. It will be blocked. Then, the solid sealing material stored and cured in the exhaust port becomes the exterior member as it is. The metal vacuum insulation container according to claim 2 is the metal vacuum insulation container according to claim 1, wherein the means for temporarily fixing the solid sealing material to the temporary fixing recess includes a solid sealing material in the temporary fixing recess. A metal vacuum selected from a means for loosely fitting the solid sealing material in the temporary fixing recess, a means for tape-fixing the solid sealing material in the temporary fixing recess with a tape which burns out when heating is enabled, and the like. It is an insulated container.

[0010] In the invention including this specific matter, the solid sealing material is temporarily fixed to the temporarily fixing concave portion, and the solid sealing material melted at the time of heat sealing can be reliably stored in the exhaust port. According to a third aspect of the present invention, in the metal vacuum insulated container according to the first or second aspect, the outer container includes the solid sealing material and itself constitutes an outer package. It is an insulated container.

[0011] In the invention including this specific matter, since the outer container is also used as the outer package, the design becomes simpler. According to a fourth aspect of the present invention, in the metal vacuum insulated container according to the first, second, or third aspect, the outer container is made of a metal formed by integrally molding a shoulder, a body, and a bottom. It is a vacuum insulation container.

[0012] In the invention including this specific matter, the outer container is integrally formed of a single material by press molding or the like, and is fixed to the inner container while covering the inner container. According to a fifth aspect of the present invention, there is provided the metal vacuum insulated container according to any one of the first to third aspects, wherein a getter is attached to an inner surface of a bottom of the outer container. .

[0013] In the invention including this specific matter, the member for attaching the getter can also be used as the outer container. The invention according to claim 6 is based on claims 1, 2, 3,
6. The metal vacuum insulation container according to item 4 or 5, wherein the temporarily-fixed recess formed at the bottom of the outer container is a metal vacuum insulation container formed by a bead recessed inward.

[0014] In the invention including this specific matter, the strength of the outer container is improved by the bead serving as the temporary fixing recess formed in the outer container. The invention according to claim 7 is the same as the claim 6.
The metal vacuum insulated container according to the above description, wherein the bead is provided with an exhaust port for bleeding air between the inner container and the outer container.

According to the invention including the specific matter, by forming the exhaust port in the bead, the bead can be used also as a temporary fixing recess of the sealing material. The invention according to claim 8 is the invention according to claim 1, 2, 3, 4, 5, 6, or 7.
The metal vacuum insulated container according to the above, wherein a screw portion for screwing a cup to the outer container is formed.

[0016] In the invention including this specific matter, the exhaust port sealed by the cup can be hidden, and the main body can be disassembled into only the metal inner container and the outer container by removing the cup. Become. The invention according to claim 9 is based on claims 1, 2, 3, 4, 5, 6, 7,
9. In the metal vacuum insulated container according to 8, the bottom of the outer container is a metal vacuum insulated container which is covered with a seal covering the exhaust port.

In the invention including the specific matter, the sealing material that blocks the exhaust port is protected. The appearance is also improved by the seal. Furthermore, it can also be used as a seal such as a lot seal (a seal printed with information such as a manufacturing date, a manufacturing factory symbol, and a product number, which is usually attached to an easily visible place such as the bottom of a container).

[0018]

As described above, according to the present invention, the solid sealing material is temporarily fixed to the bottom of the outer container, and is heated and melted by a well-known method to stop at the exhaust port. The air outlet. Since the solid sealing material stored and cured in the exhaust port becomes the exterior member as it is, a remarkable effect that an exterior body that can be washed in a round with a simplified and simple outer container is produced.

According to the second aspect of the present invention, since the solid sealing material melted at the time of heat sealing can be reliably stored in the exhaust port, the solid sealing material is cured in a state suitable for the exterior body. There is an advantage that can be. According to the third aspect of the present invention, since the outer container is also used as the outer body,
It has a simpler design and can be configured to be suitable for round washing.

According to the fourth aspect of the present invention, the outer container is integrally formed of a single material by press molding or the like, and is fixed to the inner container while covering the inner container. With this configuration, since there is no connection portion through which water can enter, it is possible to wash the main body. Further, since the number of welding points is reduced, the possibility of occurrence of a leak after evacuation is reduced, and the defective rate can be reduced.

Further, in the metal vacuum insulated container according to the fifth aspect, since the outer container can also serve as a member for attaching the getter, the number of parts is reduced, the number of manufacturing steps is reduced, and the cost is reduced. It becomes possible to reduce. Further, in the metal vacuum insulated container according to claim 6,
Since the strength of the outer container is improved by the bead, the thickness of the outer container can be set as thin as possible, and a lightweight and upper main body can be formed.

Further, in the metal vacuum insulation container according to the seventh aspect of the invention, since the exhaust port is formed in a bead, the bead can be used also as a temporary fixing recess of the sealing material, so that the processing step is also reduced. The cost can be reduced, and the cost can be reduced. Furthermore, in the metal vacuum insulation container according to claim 8, the exhaust port sealed by the cup can be hidden, and the main body can be disassembled into only the metal inner container and the outer container by removing the cup. Therefore, there is an advantage that the width of the external design can be increased without impairing the washing function.

Further, in the metal vacuum insulation container according to the ninth aspect, the sealing material that blocks the exhaust port is protected, so that the durability is improved. Further, the appearance is improved by the seal, and it is possible to further increase the purchase will. Furthermore, since it can also be used as a seal such as a lot seal, the number of parts does not increase. Therefore, it contributes to cost reduction.

[0024]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A preferred embodiment of the present invention will be described in detail. FIG. 1 is a sectional view showing a schematic configuration in which a part of a container 10 according to one embodiment of the present invention is omitted.

Referring to FIG. 1, a container 10 according to the illustrated embodiment includes a main body 11, an annular mounting member attached to the upper end of the main body 11, and an inner stopper and a cup which are attached to and detached from the mounting member. have. In the illustrated embodiment, the mounting member, the inner plug, and the cup are all the mounting member 12a, the inner plug 12b, and the cup 12 of FIG.
1, the description is omitted in FIG.
However, the embodiment of FIG. 1 is different from the embodiment of FIG. 13 in that the exterior bottom cover 8 of FIG. 13 is not provided.

The main body 11 has a double structure consisting of an inner container 14 and an outer container 15 arranged on the outer periphery of the inner container 14. Is formed. Here, the inner container 14 of the main body 11 according to the illustrated embodiment has a bottomed storage portion 14a for storing a drink, an opening 14b formed on the upper end side of the storage portion 14a, and a vicinity of the opening 14b. Formed neck 1
4c and a stainless steel press-formed product integrally formed.

At the same time, the outer container 15 according to the illustrated embodiment has a bottom 15a covering the bottom of the inner container 14, and an outer cylindrical portion 15b covering the outer periphery of the inner container 14 continuously with the outer lid 15a. Are characterized in that a single member is integrally formed by press molding. Outer container 15 (outer cylinder 15
The upper part of a) is a shoulder 1 having a slightly smaller diameter than the bottom part.
6 so that the mounting member can be fixed to the shoulder portion 16. And the outer cylinder part 1
The opening 15c of the inner container 5a is set to a diameter d1 necessary and sufficient to insert the accommodating portion 14a of the inner container 14, and is fitted to the opening 14b of the inner container 14 with the inner container 14 attached. In addition, it is welded while maintaining airtightness and liquid tightness by welding. Thereby, both containers 1
4 and 15 are concentrically integrated with a gap S therebetween.

Next, a sealing mechanism M, which is enlarged in FIG. 2, is formed at the bottom 15a of the outer container 15 in order to discharge the air in the gap S and perform vacuum sealing. FIG. 2 shows FIG.
It is a partial expanded sectional view showing the important section of container 10 concerning an embodiment. Referring also to FIG. 2, the bottom portion 15 a of the outer container 15 is provided with a first annular concave portion 1 whose central portion is slightly flattened.
5e, a second annular recess 15f further recessed toward the inner container 14 is provided at the center of the annular recess 15e.
Are formed.

At the center of the second annular recess 15f,
A recess 15g for holding the brazing material 9 having a substantially semicircular cross-sectional shape is formed, and an exhaust port 15h is formed at the center thereof. For example, an annular brazing material 9 (solid sealing material; see FIG. 9) is fitted into the brazing material 9 holding recess 15g, so that the brazing material 9 can be temporarily fixed. I have. Therefore, the main body 11 is inverted, and the brazing material 9 is temporarily fixed by fitting the brazing material 9 into the recess 15g. By heating the brazing material 9 at a temperature higher than the melting point of the brazing material 9, the brazing material 9 is melted and poured into an exhaust port 15h formed in the center of the recess 15g.
By stopping and curing the exhaust port 15h so as to cover it, the exhaust port 15h can be reliably sealed. As described above, as a sealing technique capable of eliminating a holding member such as the drop prevention plate 7 shown in FIG. For example, Japanese Patent Application No. 6-92770 (Japanese Unexamined Patent Application Publication No. 7-2894) previously proposed by the present applicant.
No. 49) can be suitably adopted.

Further, as shown in FIG. 2, a getter 20 is attached to the inner surface of the bottom 15a constituting the outer container 15. The getter 20 is mounted by spot welding a ring-shaped getter support member 22 to the inner surface of the bottom of the bottom 15a via a pin member 21. Since the getter 20 is directly attached to the bottom 15a of the outer container 15, a mounting plate for mounting the getter 20 is separately provided as in the related art, and the mounting plate is attached to the bottom 15a.
As a result, there is no need to perform welding or the like on a, so that the sealing performance of the gap S can be ensured solely by the sealing (welding) process of the opening portions of both containers 14 and 15.

FIG. 3 is a sectional view showing a main body 11 according to another embodiment of the present invention. As shown in the figure, the present invention can be suitably applied to a launcher in which the inner container 14 is formed in a cylindrical shape with a bottom. FIG.
FIG. 9 is a partially cutaway view showing a main body 11 according to still another embodiment of the present invention.

As shown in the figure, in the present invention, if the inner container 14 can be inserted through the opening 15c of the outer container 15, various forms can be adopted.
In the illustrated example, the upper end side of the outer cylindrical portion 15b of the outer container 15 forms a curved portion 15k that smoothly opens to a large diameter. In FIG. 4, reference numeral 17 denotes a mounting member fixed to the upper end portion of the main body 11, and reference numeral 18 denotes a lid member detachable from the mounting member 12.

FIGS. 5A and 5B show a preferred embodiment of the present invention, wherein FIG. 5A is a schematic sectional view and FIG. 5B is a bottom view.
Referring to FIG. 5, when the present invention is applied to the container 10 illustrated in FIGS. 1 to 4 described above, beads 30 may be provided substantially radially on the bottom surface of the bottom portion 15a as shown in FIG. This makes it possible to improve the strength of the bottom portion 15a, and thus the mechanical strength of the outer container 15.

Further, a part of the bead 30 may also be used as the above-described recess 15g for holding the brazing material 9, and an exhaust port 15h may be formed at the center thereof. In this case, since the recess 15g for holding the brazing material 9 can be simultaneously formed by bead processing, an increase in the number of processing steps can be prevented, and the cost can be reduced.

At the bottom 15a of each of the containers 10 described above, a configuration is employed in which the brazing material 9 is poured into the concave portion to seal the exhaust port 15h, so that the polishing is performed if necessary.
The bottom part 15a can be used as it is as an exterior member only by performing processing such as painting. On the other hand, as shown in FIG. 6, a cup covering the bottom 15a can be provided detachably. FIG. 6 is a partially enlarged sectional view showing a main part of a container 10 according to another embodiment of the present invention.

As shown in the figure, the illustrated outer container 15 has a threaded portion 40 formed by beading near the bottom of the outer cylindrical portion 15b, and a cup 41 is formed on the threaded portion 40. It is screwed. The cup 41 can be suitably made of either stainless steel or resin. In this embodiment, the bottom part 15 a of the outer container 15 can be hidden by the cup 41, and the main body 11 can be washed by removing the cup 41. Regarding this point, conventionally, when a molded product or another member is set in the main body by press fitting or the like,
Water could accumulate in the gap formed between the main body and the separate member, causing rust and the like, so that it was not possible to wash the whole. As described above, in each embodiment described above, the outer container 15
Is integrally formed of a single material by press molding or the like, so that there is no connection portion where water enters into the gap S of the main body 11, so that the main body can be washed completely.

The getter 20 is connected to the bottom 1 of the outer container 15.
By attaching the getter 20 to the inner surface of the
Since the outer container 15 can also serve as a member for attaching the components, the number of parts can be reduced, and the cost can be reduced. Also, as shown in FIG.
Since the strength of the outer container 15 is improved by 0, the outer container 1
5 is set as thin as possible, and the main body 11 is lightweight and upper.
Can be configured.

Further, by forming the exhaust port 15h in the bead 30, the bead 15 can also be used as a temporary fixing recess of the brazing material 9, so that the number of processing steps can be reduced and the cost can be reduced. become. In addition, FIG.
In the embodiment, the exhaust port sealed by the cup 41 can be hidden, and by removing the cup 41, there is an advantage that the width of the external design can be increased without impairing the washing function. is there.

The above embodiment is merely an example of a preferred specific example of the present invention, and the present invention is not limited to the above embodiment. 7 and 8 are enlarged partial cross-sectional views showing a modification of the embodiment of FIG. FIG.
Referring to FIG. 7, as described above, the bottom of the outer container 15 may be exposed as it is to form an exterior body.
As shown in FIG. 8, a configuration may be adopted in which the brazing material 9 is covered with a bottom plate 15 k to form an exterior body with the bottom plate 15 k and also protect the brazing material 9.

As shown in FIG. 7, the brazing material 9 may be in a hardened state in a flat shape substantially flush with the periphery of the recess 15g, as shown in FIG. Alternatively, a curved concave portion 9a may be formed along the curved surface of the concave portion 15g. In any case, the bottom plate 15k may be welded to the bottom plate 15k or may be omitted.

Further, various forms of the brazing material 9 and the recess 15g can be adopted. Figure 9 shows brazing material 9
It is a perspective view which shows the aspect of. As shown in the figure, the brazing material 9 has a columnar shape (see FIG. 9A), a disk shape (see FIG. 9B), and a spherical shape (see FIG. 9).
(C) can be adopted.

FIG. 10 is a schematic sectional view showing an embodiment of the recess 15g. As shown in the figure, the concave portion 15g for temporarily fixing the brazing material 9 has a curved spherical shape (FIG. 10).
(A), a rectangular cross section (see FIG. 10 (B)),
Various modes such as a triangular cross section (see FIG. 10C) and a U-shaped cross section (see FIG. 10D) can be employed.

Further, there are various means for temporarily fixing the brazing material 9 to the recess 15g. FIG. 11 and FIG. 12 are cross-sectional partial schematic views showing a state where an outer container according to a modification corresponding to the embodiment of FIG. 4 is inverted. Referring to FIG. 11, brazing material 9 is provided with concave portions 15 of inverted main body 11.
It may be melted while being loosely fitted to g. In that case,
The brazing material 9 accommodated in the concave portion 15g may be temporarily fixed with the tape T which is burned out when heated. At the time of vacuum heating, the main body 11 is heated at a minimum of 200 ° C. or higher. Therefore, by using a tape T made of a material (paper, cellophane, etc.) that is burned off by this, a suitable temporary fixing structure and subsequent removal processing are performed. Can be performed simultaneously. Of course, Figure 1
As shown in FIG. 2, the shoulder 15m into which the brazing material 9 is forcibly fitted.
May be sectioned in the recess 15g, and the brazing material 9 may be forcibly fitted to the shoulder 15m and melted. Also in this case, the melting surface of the brazing material 9 is set so as to smoothly continue to the bottom surface of the outer container 15.

Further, as shown in FIG. 12, a seal 25 may be attached as a member for protecting the brazing material 9. The seal 25 according to the illustrated embodiment is a lot seal, which not only protects the brazing material 9 but also suppresses an increase in the number of parts. It goes without saying that various design changes are possible within the scope of the claims of the present invention.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a schematic configuration in which a part of a metal vacuum insulation container according to an embodiment of the present invention is omitted.

FIG. 2 is a partially enlarged cross-sectional view showing a main part of the metal vacuum heat insulating container according to the embodiment of FIG.

FIG. 3 is a cross-sectional view illustrating a main body according to another embodiment of the present invention.

FIG. 4 is a partially cutaway view showing a main body according to still another embodiment of the present invention.

FIG. 5 shows a specific example suitable for the present invention;
(A) is a schematic partial sectional view, and (B) is a bottom view.

FIG. 6 is a partially enlarged sectional view showing a main part of a metal vacuum heat insulating container according to another embodiment of the present invention.

FIG. 7 is an enlarged partial cross-sectional view showing a modification of the embodiment of FIG. 1;

FIG. 8 is an enlarged partial cross-sectional view showing a modification of the embodiment of FIG. 1;

FIG. 9 is a perspective view showing an embodiment of a solid sealing material.

FIG. 10 is a schematic cross-sectional view showing an embodiment of a temporary fixing recess.

11 is a schematic partial cross-sectional view showing a state where an outer container according to a modification corresponding to the embodiment of FIG. 4 is inverted;

FIG. 12 is a schematic partial sectional view showing a state where an outer container according to a modification corresponding to the embodiment of FIG. 4 is inverted;

FIG. 13 is a cross-sectional view showing a main body structure of a general metal vacuum insulation container.

FIG. 14 is an enlarged view of a main part of FIG.

[Explanation of symbols]

 S gap 10 metal vacuum insulation container 11 body 14 inner container 15 outer container 15a outer lid 15b outer cylinder 15g brazing material holding recess 15h exhaust port 20 getter 30 bead 40 screw part 41 cup

Claims (9)

[Claims] 1. A temporary fixing recess in which a solid sealing material of a predetermined shape is temporarily inserted and fixed in a metal vacuum insulating container having a main body in which a metal inner container and an outer container have a double structure with a gap therebetween. Is formed, and the sealing material temporarily fixed in the temporarily-fixed concave portion forms an exhaust port that is sealed by being melted down at the time of heat sealing and stored in the temporarily-fixed concave portion, and the bottom of the outer container is formed. A metal vacuum heat insulating container, wherein a part of the outer surface is formed by a solid sealing material stored in the temporary fixing recess. 2. The metal vacuum insulation container according to claim 1, wherein the means for temporarily fixing the solid sealing material to the temporarily fixing recess includes means for loosely fitting the solid sealing material into the temporarily fixing recess. A metal vacuum insulation container selected from a means for forcibly fitting a solid sealing material into the concave portion, a means for tape-fixing the solid sealing material to the temporarily fixing concave portion with a tape which burns off when heating is enabled, and the like. 3. The metal vacuum heat insulating container according to claim 1, wherein the outer container includes the solid sealing material and itself constitutes an exterior body. 4. The metal vacuum insulation container according to claim 1, 2 or 3, wherein the outer container is formed by integrally molding a shoulder, a body, and a bottom. 5. The vacuum container as claimed in claim 1, wherein a getter is attached to the inner surface of the bottom of the outer container. 6. The metal vacuum insulation container according to claim 1, wherein the temporary fixing recess formed at the bottom of the outer container is formed by a bead recessed inward. Metal vacuum insulated container. 7. The vacuum container as set forth in claim 6, wherein the bead has an exhaust port for bleeding air between the inner container and the outer container. 8. The method of claim 1, 2, 3, 4, 5, 6, or 7.
The metal vacuum heat insulating container according to claim 1, wherein a screw portion to which a cup is screwed is formed at a bottom of the outer container. 9. The metal vacuum insulation container according to claim 1, 2, 3, 4, 5, 6, 7, or 8, wherein a bottom portion of the outer container is covered with a seal covering the exhaust port. Metal vacuum insulated container.