JP2001238804A - Metallic container insulated from heat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metallic container insulated from heat which can be washed thoroughly while avoiding permeation of water, and can be kept in a sanitary condition for a long time because dust, dirt, and other foreign materials stuck to the body can be removed easily while making welding works on it easy. SOLUTION: The main body 3 comprises an inner container 1 made of a metal and an outer container 2 made of a metal which wraps up the inner container 1 while keeping space between two containers. Edges 4, 7 of openings for both containers 1, 2 are lap-welded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal heat insulating container in which a main container is constituted by a metal inner container and an outer container.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 14, this kind of heat insulating container is made of a metal inner container 1 and a synthetic resin container between the inner container 1 and a heat insulating material 11 filled therein. The main container 3 is constituted by the outer container 2 made of the metal container, and the opening edge 4 of the metal inner container 1 is joined to the opening edge 7 of the outer container 2 by overlapping so as to form the opening edge 3a of the main container 3. Was.

[0003]

However, with such a structure of the main body container 3, the opening edge is formed by joining the metal member forming the inner container 1 and the synthetic resin member forming the outer container 2 with different members. Since 3a is formed, water easily penetrates from the joint between the different kinds of members, so that it is not possible to wash and wash the joint, and dust and foreign matter adhere to the joint to cause dirt, and the dirt is generated. Bacteria have multiplied and there is a problem in hygiene.

[0004] Further, as shown in FIG.
The outer flanges 4c, 7c are formed on the respective opening edges 4, 7, and the ends of the outer flanges 4c, 7c are bent outward to hang down. There is known one that is welded by welding 9. However, with such a configuration, the welded portions 9 of the respective lower end portions 4e and 7e extraly protrude outward with respect to the outside of the outer container 2, and their outer diameters are increased to increase the size. Narrow gap E between ends 4e, 7e and outside
Dust, foreign matter, etc. adhere to the surface, and it is not easy to clean the attached matter in the narrow gap E, and the attached matter remains unwashed, causing a problem in hygiene.

Further, each of the inner and outer containers 1 and 2 is formed by deep drawing with a single plate of stainless steel, and the opening edges 4 and 7 are welded to form a large-capacity main container 3. In this case, since the single-plate deep drawing and the opening have a large diameter, the opening edges 4 and 7 of the inner and outer containers 1 and 2 are likely to be distorted. If the welding work of the opening edges 4 and 7 of the inner and outer containers 1 and 2 is performed in this state, the work for fitting and joint positioning at the opening edges 4 and 7 becomes complicated, and it also hinders uniform welding finishing. There is a problem that causes. In particular, when the opening shape of the large-capacity inner and outer containers 1 and 2 is a large-diameter square non-circular shape, the tendency tends to increase.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to wash the main body container by washing the whole main body container by eliminating gaps between the main body containers and preventing intrusion of water.
A large-capacity main body container that can easily remove dust and foreign matter adhered thereto, keeps it clean and sanitary for a long time, and simplifies the configuration of the main body container and the formation of the opening edge thereof. It is another object of the present invention to provide a structure that facilitates a welding operation for forming the same and can form a uniform welded surface.

[0007]

In order to achieve the above object, in the metal heat insulating container according to the first aspect of the present invention, a space is formed between the metal inner container and the inner container. The main container is composed of an outer container made of metal and an outer body, and a drooping portion is formed by bending outward and hanging at the opening edge of the inner container. Are overlapped with a predetermined width, and an overlapping edge located outside the overlapping portion is welded to form an opening edge of the main body container.

In such a configuration, by welding the opening edges of the inner and outer containers, a gap between the openings forming the opening edge of the main container can be eliminated, water can be prevented from entering, and the main container can be washed and washed. Along with this, a hanging part which is bent outward and hangs down at the opening edge of the inner container is formed, and the opening edge of the outer container is overlapped and welded to this hanging part with a predetermined width in the height direction. This eliminates unnecessary projections and protrusions even when the welded portion is formed, and forms a continuous surface extending from the hanging portion along the outer surface of the outer container 2, making it difficult for dust and foreign matter to adhere. Even if they adhere, they can be easily removed and are easy to care for, so that they can be kept clean and hygienic for a long time.

In particular, even when a large-capacity main body container is formed, the outer container opening edge is overlapped with a predetermined width in the height direction and welded to a vertically lower part of the inner container opening edge. The work for fitting and joint positioning at the opening edge can be simplified, the welding work can be facilitated, and a uniform welded surface can be formed.

[0010] In the metal heat insulating container according to the present invention, the main container is constituted by two members: an inner container made of a single metal member and an outer container made of a single metal member. It is characterized by doing.

With such a configuration, the double container can be formed with the minimum number of parts of only the two members of the metal inner and outer containers, so that the components of the main container can be simplified as much as possible.

According to the third aspect of the present invention, in the metal heat insulating container, an outer flange is formed on an opening edge of the inner container, and the edge of the outer flange is hung down to form the hanging portion. It is characterized by: In such a configuration, by forming the outer flange on the opening edge of the inner container, a smooth surface is formed on the top surface of the opening edge of the main body container formed by the outer flange, and this opening edge is formed. The contact area due to surface contact with the placed lid is increased, the airtightness with the lid is improved, the heat retention is improved, and the placement state of the lid is stabilized.

According to a fourth aspect of the present invention, there is provided a metal heat insulating container according to the present invention, wherein an outer periphery of the heat insulating container is downwardly directed to a lower portion near an opening edge of an outer container overlapped with a hanging portion formed at an opening edge of the inner container. It is characterized in that an annular step is formed.

In such a configuration, the downward dimension of the outer container is formed in the vicinity of the opening edge of the outer container in the downward direction, so that the opening size of the outer container is stabilized and the hanging portion of the inner container is lowered. And the assembling workability is improved, and the opening edge of the outer container is reinforced by the formation of the downward annular step portion, so that a more robust opening edge of the main container can be formed together with the overlap welding. .

In particular, even when a large-capacity main body container has a large-diameter non-circular opening with a large-diameter opening, a downwardly-facing annular step is formed around the outer container near the opening edge of the outer container. , The opening size of the outer container becomes stable, the distortion due to the dimensional error at the opening edge is reduced, and the fitting and the positioning in a substantially uniform bonding state can be performed. The simplification of the welding operation also facilitates the welding operation, thereby reducing welding defects and forming a uniform welded surface.

According to a fifth aspect of the present invention, in the metal heat insulating container according to the present invention, the main container is formed such that the height from the bottom to the opening edge is smaller than the maximum opening length of the inner container, so that the content container has a large capacity. It is characterized by keeping warm.

In such a configuration, a large volume of liquid content such as cooking juice and food can be kept warm, and the cooking juice and food can be easily scooped from the main body container 3, for example, for use in school lunches and restaurants. It becomes convenient as a heat insulation container for business use such as, for example, and is particularly suitable as a heat insulation container in which hygiene is regarded as important as the main body container is formed of metal.

According to a sixth aspect of the present invention, in the metal heat insulating container, a downward step is formed outside the body of the outer container, and the outer diameter of the body at the lower bottom of the downward step is determined by the inner container. The inner diameter of the main container is formed smaller than the inner diameter of the main container, so that the bottom of the main container can be fitted from the opening edge of the main container separate from the main container.

In such a configuration, a stacking structure in which the bottom portion of such a main body container can be fitted from the opening edge of the main body container separate from the main body container can be provided. The main containers can be stacked, which facilitates the storage of the main containers and is convenient for carrying and transporting, so that even in the case of a large-capacity main container, it is stored in a stable state without being bulky. be able to.

According to a sixth aspect of the present invention, in the metal heat insulating container according to the present invention, the downward step portion has a plurality of projections formed at predetermined intervals on a lower surface on a fitting side. I have.

In such a configuration, a plurality of projections are formed at predetermined intervals on the downward step, so that when the projection is fitted from the opening edge of the main body container, the separate main body into which the projections are fitted is inserted. Abutting against the opening edge of the container, a gap corresponding to the height of the projection is generated between the opening edge and the downward step. As a result, when cleaning the main body container, a plurality of main bodies are stacked. Even when containers are stacked,
Cleaning water can enter through the gaps between the main body containers to wash the inside of each stacked main body container, and a plurality of main body containers can be cleaned at one time, thereby improving the efficiency of the cleaning operation. be able to.

According to a seventh aspect of the present invention, in the metal heat insulating container according to the present invention, the main container is formed so that the maximum diameter of the body of the outer container is at least as long as one hand can hold. It is characterized in that a small volume of content liquid is kept warm.

In such a configuration, the maximum diameter of the body of the outer container is not limited to the above-mentioned configuration for retaining the large volume of the liquid content, but is formed to a length that can be held by at least one hand. It can also be used in a container that keeps a small volume of the content liquid, and in this case, in combination with the fact that the top surface of the opening edge of the main container is formed as a smooth surface as described above, The container 3 can be used, for example, as a directly drinkable bottle or mug that can be held and drunk with one hand, and can also be used as a container that is palatable and easy to drink.

Further objects and features of the present invention will become apparent from the following detailed description and drawings. Each feature of the present invention can be used alone or in various combinations in combination as far as possible.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Some preferred embodiments of the present invention will be described below with reference to FIGS.
3 to provide an understanding of the present invention.

However, the present invention is not limited to the following embodiments, and the material shapes of the components described in the following embodiments are within the scope of the present invention unless otherwise specified. Is not intended to be limited to them only,
It is only an illustrative example.

(Embodiment 1) In Embodiment 1, in the metal heat insulating container shown in FIGS. 1 to 7, a space S is formed between the metal inner container 1 and the inner container 1. A main body container 3 is constituted by a metal outer container 2 forming an exterior body, and a hanging portion 6 which is bent outward and hangs down at an opening edge 4 of the inner container 1 is formed. Opening edge 7 of 2
Are overlapped with a predetermined width in the height direction, and the overlapping end 6a located outside the overlapping portion 8 is welded 9
The opening edges 4 and 7 of the inner and outer containers 1 and 2 are welded to form the opening edge 3a of the main container 3.

In such a configuration, the opening edges 4 and 7 of the inner and outer containers 1 and 2 are welded to form the opening edge 3 of the main container 3.
The main container 3 can be washed and washed by eliminating gaps between the a forming the inner and inner walls of the inner container 3 to prevent water from penetrating. 6 is formed, and the opening edge 7 of the outer container 2 is overlapped with the hanging portion 6 with a predetermined width in the height direction and welded 9. By eliminating the overhang and being formed as a continuous surface extending from the hanging portion 6 along the outer surface of the outer container 2, dust, foreign matter, etc. are less likely to adhere, and even if they adhere, they can be easily removed. It is made and easy to care for and keeps it clean and hygienic over time.

In particular, even when a large-capacity main container 3 is constructed, the opening edge 7 of the outer container 2
Are welded together with a predetermined width in the height direction, thereby simplifying the work for fitting and positioning at the opening edge 7, facilitating the welding work and uniform welding finish. A surface can be formed.

The main container 3 is composed of two members: an inner container 1 made of a single metal member such as stainless steel, titanium, aluminum and iron, and an outer container made of a single metal member. ing. The metal material of the inner container 1 and the outer container 2 may be the same metal material or a combination of different metal materials, and can be arbitrarily selected depending on the use and purpose of use. Thus, the metal inner and outer containers 1 and 2
By forming the double container with the minimum number of parts of only the members, the components of the main container 3 can be simplified as much as possible, so that a plurality of legs at the bottom 15 formed by the outer container 2 shown in FIG. The part 25 and the convex part 26 protruding in a cross shape for reinforcement are also integrally formed with the outer container 2 by press forming.

The inner container 1 of the main container 3 has a projection 1a formed on the inner side as a capacity index indicating the full water level L1 (capacity 10L), and the projections 1b (L
2) 1c (L3) is formed.

The main container 3 is provided with a heat insulating material 11 in a space S at the bottom formed between the inner container 1 made of metal and the outer container 2 made of metal as an exterior body. The heat insulating effect of the heat insulating material is improved, and the dent of the inner container 1 toward the outer container 2 is prevented by the load or impact applied to the inner container 1, thereby stabilizing the dimensional interval therebetween.
The heat insulating material 11 is preferably made of foamed P or P in consideration of heat resistance, but may be made of foamed urethane or glass wool or the like, and is formed by a hollow donut-shaped flat plate as shown in the right half of FIG. Alternatively, as illustrated in the left half of FIG.
The arrangement position and the like can be freely set according to the shape of the main body container 3, the heat retaining property, the arrangement workability, and the like.

In place of the heat insulating material 11, a vacuum can be formed between the inner container 1 and the outer container 2 so that the main container 3 is formed as a vacuum double container to further improve the heat retaining property.

In the main body container 3 shown in FIGS. 1 and 4, the height A from the bottom portion 15 to the opening edge 3a is formed to be smaller than the maximum opening length B of the inner container 1, so that a large volume of cooking juice or food can be obtained. And the like can be kept warm. In addition, by forming the height A from the bottom to the opening edge lower than the maximum opening length B of the inner container 1, it is easy to scoop up the cooking juice or the food from the main body container 3, for example, for feeding or eating and drinking. It becomes convenient as a heat insulating container for business use such as a store, and especially as a heat insulating container in which sanitary aspects are regarded as important because the main body container is formed of metal.

When the opening edge 3a of the container body 3 is formed, an outer flange 5 is formed on the opening edge 4 of the inner container 1, and the edge of the outer flange 5 is hung so that the hanging portion 6 is formed. Has formed.

By forming the outer flange 5 on the opening edge 4 of the inner container 1, a smooth surface is formed on the top surface of the opening edge 3a of the main container 3 formed by the outer flange 5. And the lid 12 placed on the opening edge 3a
As a result, the contact area with the cover 12 is increased, the airtightness with the cover 12 is improved, the heat retention is improved, and the mounting state of the cover 12 is stabilized.

The process of forming the inner container 1 in this configuration is as follows.
A protective sheet is adhered to the upper surface of a single flat plate made of stainless steel having an arbitrary shape, and deep-drawing is performed by pressing over the protective sheet over several steps to form the outer flange 5 once, and the outer flange 5 is formed. The outer peripheral end of the flange 5 is cut into a predetermined shape, and then the inner container 1 is turned over and the back surface of the outer flange 5 is pressed to form a hanging portion 6, and the cut end surface is combined with the end surface 6 a of the hanging portion 6. I am trying to do it. This forming step is also performed in the outer container 2 by deep drawing of a single flat plate made of stainless steel.

The container body formed by the inner and outer containers 1 and 2 has an opening formed by the inner container 1 in a substantially square shape having a major axis and a minor axis, and a rounded opening edge 3a. And the body 2 of the outer container 2
The side plate formed by a is also configured to have the appearance of the body 2 having a shape similar to the opening shape.

In the main container 3, the outer container 2 overlapped with the hanging part 6 formed on the opening edge 4 of the inner container 1.
Downwardly directed annular step 1 around the outside near the opening edge 7
0 is formed. By forming the downwardly directed annular stepped portion 10, the opening size of the outer container 2 is stabilized, the superimposition with the hanging portion 6 of the inner container 1 is facilitated, and the assembling workability is improved, and Downward annular step 1
With the formation of 0, the opening edge 7 of the outer container 2 is reinforced, and together with the lap welding, a more robust opening edge 3a of the main container 3 is formed.

In particular, in the large-capacity main body container 3 as in the present embodiment, the outer container 2 is formed by a deep drawing using a single flat plate made of stainless steel, and the opening shape is a large diameter, a long diameter and a short diameter. In the case where the outer edge of the outer container 2 is formed in a substantially non-rectangular non-circular shape having a substantially rounded corner with a rounded corner, the downwardly facing annular stepped portion 10 around the outside is provided.
Is formed, the opening size of the outer container becomes stable, distortion due to a dimensional error at the opening edge 7 is reduced, and fitting and bonding positioning in a substantially uniform bonding state can be performed. Accordingly, the welding operation process is simplified, the welding operation is facilitated, welding defects can be reduced, and a uniform welded surface can be formed.

FIG. 5 shows the overlapped portion 8 in a stage before welding, and FIG. 6 shows the overlapped portion 8 after welding. As shown in FIGS. 5A and 5B, the superimposed portion 8 in the stage before welding includes the inner container 1.
The outer container 2 is overlapped with a predetermined width in the height direction with the opening edge 7 of the outer container 2 positioned inside on the hanging portion 6 formed by bending outward and hanging down from the opening edge 4 formed at the opening edge 4. An overlapped end 6a located outside the hanging portion 6 of the inner container 1 is welded to the opening edge 7 of the overlapped outer container 2.

As shown in FIGS. 6 (a) and 6 (b), the overlapping edge 6a located outside the hanging portion 6 of the inner container 1 is welded 9 to the opening edge 7 of the outer container 2. As a result, the hanging portion 6 of the inner container 1 can be formed as a continuous surface that is gently continuous along the outer surface of the outer container 2. The opening edge 3a of the main body container 3 having no gaps can be formed, and it can be easily cleaned and the like, and can be kept clean and hygienic for a long time.

In the overlapping portion 8, before welding shown in FIG. 5, the hanging portion 6 of the inner container 1 and the opening edge 7 of the outer container 2 are formed.
6, a play gap D is formed in advance to adjust the dimensional error of the overlap and facilitate the fitting workability, and as shown in FIG.
When welding a, the hanging portion 6 is moved toward the opening edge 7 side of the outer container 2 to make the play gap D tight, and welding is performed in this tight state.

Further, as shown in FIGS. 5 and 6B, by positioning the welding end 6a near the position above the downwardly directed annular step 10, as shown in FIG. 6B. ,
The welding can be performed so as to continuously follow the downward inclination of the downward annular step portion 10, whereby a gentle continuous surface is formed from the hanging portion 6 to the downward annular step portion 10, and the welding end surface is formed. The treatment is beautifully finished, the appearance is good, and the cleaning and the like are easy to maintain.

As shown in FIG. 5 and FIG. 6 (c), the opening edge of the outer container 2 is opposite to the overlapping portion 8 shown in FIGS. 5 and 6 (a) and (b). 7 is positioned outside the hanging portion 6 of the inner container 1, and the overlapping end portion 7a forming the edge of the opening edge 7 of the outer container 2 and the hanging portion 6 are welded 9 to form the opening of the main container 3. The edge 3a may be formed. With this configuration, since the welding end 7a is located at the upper side, welding can be performed in the upright posture of the main body container 3, thereby improving welding workability. Also in this configuration, the welded portion 9 between the overlapping end portion 7a and the hanging portion 6 is connected to the outer flange 5 of the inner container 1.
By forming the surface as a continuous surface, the welding end surface treatment is uniformly and finely finished. Further, as shown in FIG. 7A, the hanging part 6 formed on the opening edge 4 of the inner container 1 and bent outward is bent toward the opening edge 7 side of the inner container 2 further inside. By inclining, the hanging portion 6 is folded over the inside along the inclined surface which is inclined and overlaps with the opening edge 7 of the outer container 2, and the overlapped end 6a is welded.

By doing so, the hanging portion 6 of the inner container 1 and the opening edge 7 of the outer container 2 before welding shown in FIG.
It is not necessary to form the play gap D in advance between
The dimensional error can be adjusted along the upper and lower overlapping surfaces of the inclined surface by bending the hanging portion 6 inward, and as shown in FIG. And the step of bringing the play gap D close to the opening edge 7 side of the outer container 2 can be omitted, and the welding operation step can be simplified.

As shown in FIG. 7B, contrary to FIG. 7A, the opening edge 7 of the outer container 2 is bent toward the inside of the inner container 1 to be inclined. By doing
The hanging part 6 of the inner container 1 opening edge 4 is bent toward the inside of the outer container 2 and overlaps the inclined opening edge 7 along the inclined surface, thereby welding the overlapping end 6a. I have to.

Also in this configuration, it is not necessary to form the play gap D as in FIG. 7A, and the dimensional error can be adjusted along the upper and lower overlapping surfaces of the bent inclined surfaces of the opening edge 7. As shown in FIG. 6, when welding the overlapped end portion 6a, a step of closely contacting the play gap D without bringing the hanging portion 6 toward the opening edge 7 of the outer container 2 is omitted. And the welding operation process can be simplified. Accordingly, the opening edge 7 of the outer container 2
Is bent inward and inclined so that the opening edge 7 of the outer container 2 is located more inside, and the fitting operation of the opening edge 7 and the hanging portion 6 of the inner container 1 is further facilitated. It becomes something.

With the structure of the first embodiment, in particular, in the large-capacity main body container 3, the outer container 2 is formed by a single flat plate made of stainless steel by deep drawing, and the opening shape is increased. Even if it has a large diameter, a long diameter and a short diameter, and a rectangular non-circular shape having a substantially square shape and a rounded opening edge 7 with a rounded corner, the opening size of the outer container becomes stable, Distortion due to a dimensional error at the opening edge 7 is reduced, so that fitting and joint positioning can be performed in a substantially uniform joint state, thereby simplifying the welding process, facilitating the welding operation, and reducing welding defects. And a uniform welded surface can be formed.

(Embodiment 2) Embodiment 2 shows another form of forming the opening edge 3a of the main body container 3, and FIG. 8 shows the overlapping portion 8 in a stage before welding. FIG. 9 shows the overlapped portion 8 after welding.

The overlapping portion 8 shown in FIGS. 8 and 9
The outer container 2 is overlapped with a predetermined width in the height direction with the opening edge 7 of the outer container 2 positioned on the inside of the hanging portion 6 which is formed by bending outward and hanging down at the opening edge 4 of the inner container 1. The inner container 1 is placed on the opening edge 7 of the outer container 2 superposed from the inside.
Are welded to the overlapping end 6a located outside the hanging part 6. In this configuration, the opening edge 7 of the outer container 2 is folded in an inverted U-shape until the edge 7a contacts the outside to form a hanging edge 7b, and the hanging edge 7a of the edge 7a is formed.
b and the hanging lower end 6a of the hanging part 6 of the inner container 1 are overlapped with each other, and the respective hanging ends 6a and 7b are shown in FIG.
Weld as shown.

By forming the lower end 7b bent in an inverted U-shape at the opening edge 7 of the outer container 2 as described above, the inner container is used by utilizing the springback which is going to spread outside the bent lower end 7b. 1 and the opening edge 4 of the inner container 1 and the opening edge 7 of the outer container 2 without providing a gap D between the overlapping portions as in the configuration shown in FIG. Good workability of fitting
The joining dimensions of the welded portion 9 are stabilized, and the workability of welding is improved. At the same time, a double welded portion is formed by the opening edge 7 of the outer container 2 and the bent lower end 7b joined to the opening edge 7, so that the bent lower end 7b, the lower end 6a of the inner container 1, Can be welded, and poor welding such as a hole in the side of the opening edge 7 of the outer container 2 due to this welding can be prevented, so that the welding workability can be further improved.

8 and 9 (c), the hanging portion 6 of the inner container 1 is folded upward in a U-shape to form a vertical end 6a, and the vertical end 6a and the outer container are formed. 2
Is welded to the opening edge 7a. Also in this configuration, since the welding end 7a is positioned at the upper side, welding can be performed in the upright posture of the main body container 3, and welding workability is improved.

Other structures are the same as those shown in FIGS. 5 to 7, and a detailed description thereof will be omitted.

Further, as shown in FIG.
, The reinforcing plate 4 is vertically elongated on the side plate forming the body 2a.
By forming 0, distortion due to heat generated during welding,
In addition to being able to prevent distortion occurring inside the outer container 2, it can withstand external shocks generated during storage, transportation, transportation, and the like, and is robust over a long period of time. The reinforcing projections 40 may be formed to be horizontally long in the horizontal direction along the curved surface of the body 2a, and by forming the body 2a in a cross shape, distortion in each of the vertical direction and the horizontal direction can be achieved. May be prevented.

In this case, the reinforcing projections 40 are provided. However, by forming a concave portion on the side plate forming the body portion 2a or by using the concave portion and the reinforcing convex portion 40 together, the same effect as that of the reinforcing convex portion 40 can be obtained. It can also be configured.

A metal fitting 42 made of the same material as that of the outer container 3 is welded to each of the opposed body portions 2a of the outer container 2 by welding, and the handle 42 is rotatably attached to the mounting metal 42. 41 is attached.

Thus, the container body 3 is easily carried, and the welding of the mounting member 42 also serves to reinforce the side plate forming the body 2a at the position of the mounting member 42.

The main container 3 forms the opening edge 3a of the main container 3 with the inner and outer containers 1 and 2 made of metal as described above. The cover 12 is made of a metal such as stainless steel, titanium, aluminum, or iron. Along with the main body container 3 made of metal as described above, the lid 12
Since the cover 12 is also made of metal, the lid 12 is also easy to clean and sanitary.

This lid 12 is shown in FIGS. 1, 3 and 10
As shown in FIG. 3, the outer lid 16 and the inner lid 17 are provided, a heat insulating material 27 is arranged between the inner and outer lids 16, 17, and the outer peripheral end 16a of the outer lid 16 is welded to form an integral structure.
In this case, the space between the inner and outer lids 16 and 17 may be a heat-insulated space as shown in FIG. 3 or a double vacuum space to improve the heat retention.

As described above, the sealing between the inner and outer lids 16 and 17 is maintained in the lid 12 by the welding between the inner and outer lids 16 and 17, so that the whole container can be washed and washed. It will be. The inner lid 17 of the lid 12 is fitted into the inner container 1 from the opening edge 3a of the main body container 3, and its outer peripheral end 28 wraps around the opening edge 3a of the main body container 3 and is lower than the outer welding portion 9 outside. , The heat in the inner container 1 is prevented from escaping to the outside air as much as possible.

The main container 3 shown in FIG. 1, FIG. 4 and FIG. 10 has a downward step 14 formed on the outside of the body of the outer container 2, and the outside diameter of the body at the bottom 15 below the step 14. C
Is formed smaller than the inner diameter B of the opening of the inner container 1 so that the bottom 15 of the main container 3 can be fitted from the opening edge 3a of the main container 3 separate from the main container 3. With such a stacking structure, a plurality of main containers 3 can be stacked, so that the main containers 33 can be easily stored, and can be easily carried or transported. Even in this case, it can be stored in a stable state without being bulky.

Further, in this configuration, as shown in FIGS. 2 and 10, a plurality of projections 31 are formed at predetermined intervals on the downwardly facing stepped portion 14 so that the projections 31 are fitted from the opening edge 3a of the main body container 3. When inserted, this projection 31 is
To form a gap between the opening edge 3a and the downward step portion 14 at the height of the projection 31. As a result, when cleaning the main body container 3, a plurality of Even when the main containers 3 are stacked, the washing water can enter through the gaps between the main containers 3 to wash the inside of the individual main containers 3 that have been stacked. 3 can be cleaned, and the efficiency of the cleaning operation can be improved. Although the downward step 14 is formed simultaneously and integrally with the deep drawing by the press forming of the downward step 14, the press forming by post-processing may be used. Also, the body 2a, which is a square of the outer container 2,
Although it is formed horizontally long at the center of each side of the four sides, it may be formed into a spherically protruding shape at each corner of the four sides forming a square. In the case of this spherically protruding shape, In the stacking state, a point contact state is obtained, and the gap area is increased, so that the cleaning efficiency is further improved.

Further, in the inner container 1 of the main body container 3, an inclined concave portion 13 is formed which is gently lowered from four sides of the bottom surface of the inner container 1 toward the center portion, and the inclined concave portion 13 reinforces the bottom portion. The shape is designed to be stable, and it is easy to scoop cooking juice and food with a ladle or ladle.

(Embodiment 3) In Embodiment 3 shown in FIGS. 11 to 13, unlike the large-capacity heat-insulating container shown in FIGS. The maximum diameter length is formed in a range that can be held by at least one hand to keep a small volume of the content liquid warm. Even in such a configuration, since the top surface of the opening edge 3a of the main body container 3 is formed as a smooth surface as described above, for example, a directly-drinkable bottle or mug cup that can be held and drunk with the main body container 3 in one hand. It can be used as a container that is easy to drink and easy to drink.

The main body container 3 shown in FIGS.
Constituting a vacuum double container in which the inner and outer containers 2 and 2 are evacuated,
An opening 19 for evacuating the bottom of the outer container 2 is formed integrally with the outer container 2 together with the formation of the outer container 2, and a sealing member 20 for sealing the opening 19 when vacuum is provided.

The container main body 3 shown in FIGS. 12 and 13 has an upward step 21 at the opening edge 7 of the outer container 2 forming the opening edge 3a, and approaches or is close to the upward step 21. The hanging lower end 6a of the inner container 1 is positioned so as to be in contact with the inner container 1, and the hanging lower portion 6a is welded to form the upward stepped portion 21.
And a continuous continuous surface is formed.

The upward step 21 is opposed to the outer end 22 of the lid 12 and abuts against the outer end 22, and the opening edge 3 a of the main container 3 is covered with the outer end 22 of the lid 12.
Dust and foreign matter are prevented from entering the opening edge 3a.

The opening edge 3a has a top surface formed in an arc-shaped inverted U-shape to improve the mouthfeel when drinking. Opening edge 4 of inner container 1 forming this main body container 3
, A screw portion 24 screwed to the lid 12 and an annular upward step 23 to which the packing 30 of the lid 12 is in close contact with the screw portion 24 are integrally formed.

The other structures and operational effects are not particularly different from those of the first and second embodiments, and overlapping illustration and description will be omitted.

[0071]

According to the metal heat insulating container of the present invention, the main container is constituted by a metal inner container and a metal outer container forming an exterior body having a space formed between the inner container and the inner container. Then, a hanging part which is bent outward and hangs down is formed on the opening edge of the inner container, and the opening edge of the outer container is overlapped with this hanging part with a predetermined width in the height direction. By welding the overlapping edges located on the outside to form the opening edge of the main container, the opening edges of the inner and outer containers are welded to form an opening edge of the main container. The main container can be washed and washed by preventing the infiltration, and together with this, the hanging edge of the inner container is bent outward to form a hanging portion, and the opening edge of the outer container is formed at the hanging portion. By overlapping and welding with a predetermined width in the height direction, this welded part Unnecessary protrusions and overhangs are eliminated by the formation, and since it is formed as a continuous surface continuous from the hanging portion along the outer surface of the outer container 2, dust, foreign matter, and the like are less likely to adhere. It is easy to remove and easy to care for, keeping it clean and hygienic over time.

In particular, even when a large-capacity main body container is formed, the outer container opening edge is overlapped with a predetermined width in the height direction and welded to a vertically lower part of the inner container opening edge, and this is welded. The work for fitting and positioning at the opening edge is simplified, and the welding operation is facilitated, and a uniform welded surface can be formed.

Further, according to the metal heat-insulating container of the present invention, the main container is constituted by two members: the inner container made of a single metal member and the outer container made of a single metal member. Since the double container can be formed with the minimum number of parts of only the two members of the inner and outer containers made of metal, the components of the main container can be simplified as much as possible.

Further, according to the metal heat insulating container of the present invention, an outer flange is formed at the opening edge of the inner container, and the edge of the outer flange is hung down to form the hanging portion. A smooth surface will be formed on the top surface of the opening edge of the main body container formed by the outer flange, and the contact area due to surface contact with the lid placed on this opening edge will increase, and The air-tightness is improved and the heat retention is improved,
At the same time, the mounting state of the lid becomes stable.

Further, according to the metal heat insulating container of the present invention, a downward annular step around the outside is provided near the lower portion of the opening edge of the outer container overlapped with the hanging portion formed at the opening edge of the inner container. By forming the outer container, the opening size of the outer container becomes stable, it is easy to overlap with the hanging part of the inner container, and the assembling workability is improved, and the formation of the downward annular step portion allows the outer container to be formed. Can be reinforced to form a more robust opening edge of the main container together with lap welding.

In particular, even when a large-capacity main body container has a large-diameter non-circular opening shape in the case of a large-capacity main body container, a downwardly-facing annular step is formed around the outer container near the opening edge of the outer container. , The opening size of the outer container becomes stable, the distortion due to the dimensional error at the opening edge is reduced, and the fitting and the positioning in a substantially uniform bonding state can be performed. The simplification of the welding operation also facilitates the welding operation, thereby reducing welding defects and forming a uniform welded surface.

Further, according to the metal heat insulating container of the present invention, the main container is formed so that the height from the bottom to the opening edge is smaller than the maximum opening length of the inner container, and heats a large volume of the liquid content. As a result, a large volume of liquid content such as cooking juice and food can be kept warm, and the cooking juice and food can be easily scooped from the main body container 3, for example, for business use such as for school lunches and restaurants. This is particularly convenient as a thermal insulation container in which sanitary aspects are regarded as important because the main body container is formed of metal.

Further, according to the metal heat insulating container of the present invention, a downward step is formed outside the body of the outer container, and the outer diameter of the body at the lower bottom of the downward step is determined by the inner diameter of the opening of the inner container. Since the bottom portion of the main container is formed to have a smaller diameter so that the bottom of the main container can be fitted from the opening edge of the main container separate from the main container, the bottom of the main container is
A stacking structure that can be fitted from the opening edge of the main body container separate from the main body container can be provided, and a plurality of main body containers can be stacked, so that the main body container can be easily stored. As a result, it becomes convenient to carry and transport, and accordingly, even in the case of a large-capacity main body container, it can be stored in a stable state without being bulky.

Further, according to the metal heat insulating container of the present invention, the downward step portion has a plurality of projections formed at predetermined intervals on the lower surface on the fitting side so that the opening of the main container can be opened. When inserted from the rim, the projection abuts the opening edge of the separate main body container into which the projection is inserted, and a gap corresponding to the height of the projection is created between the opening edge and the downward step. As a result, when cleaning the main body containers, even when a plurality of main body containers are stacked by stacking, the cleaning water enters from the gap between the main body containers to clean the inside of the stacked main body containers. This makes it possible to wash a plurality of main body containers at a time, thereby improving the efficiency of the washing operation.

Further, according to the metal heat-insulating container of the present invention, the main container is formed to have a small diameter by forming the maximum diameter of the body of the outer container into a length that can be held by at least one hand. Since the content liquid is kept warm, it can be used not only in the configuration for keeping the large volume content solution warm, but also in a container for keeping the small volume content solution warm. Together with the fact that the top surface of the opening edge of the main body container is formed as a smooth surface as described above, the main body container can be used, for example, as a directly-drinkable bottle or mug that can be held and drunk with one hand, It can also be used as a palatable and easy-to-drink container.

[Brief description of the drawings]

FIG. 1 is a sectional view of a metal heat insulating container according to Embodiment 1 of the present invention.

FIG. 2 is a bottom view of the metal heat insulating container in FIG.

FIG. 3 is a sectional view of a lid of the metal heat insulating container in FIG. 1;

FIG. 4 is a cross-sectional view of a main body container in another metal heat insulating container according to Embodiment 1 of the present invention.

FIG. 5 is an enlarged sectional view of each opening edge before welding of the metal heat insulating container according to Embodiment 1 of the present invention.

6 is an enlarged cross-sectional view of each opening edge after welding of the metal heat insulating container in FIG. 5;

FIG. 7 is an enlarged cross-sectional view of each opening edge before welding of another metal heat insulating container according to Embodiment 1 of the present invention.

FIG. 8 is a cross-sectional view of a main part of each opening edge of another metal body container according to Embodiment 2 of the present invention before welding.

9 is a cross-sectional view of a main part of each opening edge after welding of the metal heat insulating container in FIG. 7;

FIG. 10 is a perspective view of a main body container in the metal heat insulating container according to the embodiment of the present invention.

FIG. 11 is a sectional view of a metal heat insulating container according to Embodiment 3 of the present invention.

FIG. 12 is a sectional view of another metal heat insulating container according to Embodiment 3 of the present invention.

13 is a cross-sectional view of a main part of an opening edge of the metal heat insulating container in FIG.

FIG. 14 is a sectional view of a metal heat insulating container showing a conventional example.

FIG. 15 is a sectional view of a main part of an opening edge of a metal heat insulating container showing another conventional example.

[Explanation of symbols]

 Reference Signs List A Main unit container height B Maximum opening length 1 Inner container 2 Outer container 3 Main container 3a Opening edge 4 Opening edge 5 Outer flange 6 Hanging part 6a Edge 7 Opening edge 7a Edge 8 Overlapping part 9 Welding part 10 Annular step Part 11 Insulation material 12 Lid 14 Downward annular step

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Isamu Enomoto 5-4-1-14 Tatsuminami, Ikuno-ku, Osaka-shi Inside Nakanishi Works (72) Inventor Yoshikazu Tatsumi 5-4-1-14 Tatsumiminami, Ikuno-ku, Osaka-shi Shares (72) Inventor Katsuichi Ishibashi 3-15-48 Hishie, Higashiosaka-shi Ishibashi Tech Co., Ltd. (72) Inventor Hiroshi Ioku 3-1 Hayamicho, Kadoma City, Osaka Pref. F term (reference) 4B002 AA02 AA13 BA07 BA23 BA24 BA44 BA53 CA22 CA23 CA31 CA50

Claims (8)

[Claims] 1. A main container is constituted by a metal inner container and a metal outer container forming an exterior body having a space formed between the inner container and a metal container, and is bent outward at an opening edge of the inner container. The hanging edge of the outer container is overlapped with the hanging edge with a predetermined width in the height direction, and the overlapping end positioned outside the overlapping portion is welded. A metal heat insulation container, characterized in that an opening edge of the main container is formed. 2. A metal heat insulating container according to claim 1, wherein the main container is constituted by two members, an inner container made of a single metal member and an outer container made of a single metal member. . 3. The metal heat insulation container according to claim 1, wherein an outer flange is formed at an opening edge of the inner container, and the edge of the outer flange is hung down to form the hanging portion. 4. An outwardly facing downward annular step portion is formed near a lower portion of an opening edge of an outer container overlapped with a hanging portion formed at an opening edge of the inner container. 4. The metal heat-insulating container according to any one of 3. 5. The main body container according to claim 1, wherein a height from a bottom to an opening edge is formed to be smaller than a maximum opening length of the inner container, so that a large volume of the liquid content is kept warm.
5. The metal heat-insulating container according to any one of items 4 to 4. 6. A downward step is formed outside the body of the outer container, and the outer diameter of the body at the lower bottom of the downward step is formed to be smaller than the inner diameter of the opening of the inner container. The metal heat insulation container according to any one of claims 1 to 5, wherein the bottom portion can be fitted from an opening edge of a main body container separate from the main body container. 7. The metal insulation container according to claim 6, wherein the downward stepped portion has a plurality of projections formed at predetermined intervals on a lower surface on a fitting side. 8. The main body container is characterized in that a maximum diameter of the body of the outer container is formed to a length that can be held by at least one hand to keep a small volume of the content liquid warm. The heat insulating container made of metal according to any one of claims 1 to 4.