JPH049846Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to wide-mouth thermos flasks such as lunch jars, food jars, ice buckets, etc., and particularly to a metal wide-mouth insulating container having a metal vacuum insulation layer.

[Conventional technology]

Conventionally, a lunch jar as shown in FIG. 8, for example, has been known as this type of metal wide-mouth insulating container.

In FIG. 8, reference numeral 1 is a launcher.
This launcher 1 includes a heat insulating container body 2 and a bottom member 3 attached to the bottom of the heat insulating container body 2.
It consists of a shoulder member 4 attached to the mouth of the heat-insulating container body 2, and an upper lid 5 attached to the shoulder member 4.

The heat insulating container body 2 is constructed by inserting a bottomed cylindrical inner layer 6 made of metal such as stainless steel or steel into a bottomed cylindrical outer tank 7, and joining the openings of each layer. A vacuum heat insulating layer 8 is formed between the inner tank 6 and the outer tank 7.
Projections 9 and 10 for attaching the bottom member 3 and shoulder member 4 are formed along the circumferential direction of the insulation container body 2 at the lower and upper portions of the outer peripheral surface of the insulation container body 2. ing. Bottom member 3
consists of a cylindrical portion 11 and a bottom plate portion 12 that closes the lower opening of the cylindrical portion 11, and a groove 13 formed on the inner circumferential surface of the cylindrical portion 11 is connected to the protrusion of the heat insulating container body 2. It is fixed to the heat insulating container main body 2 by being engaged with 9. A belt-shaped fixing member 14 for fixing the chopstick case is attached to the cylindrical portion 11 of the bottom member 3. As shown in FIG. 9, the shoulder member 4 includes a cylindrical lower tube portion 15 surrounding the periphery of the heat insulating container body 2, and a ring-shaped inner surface of the shoulder member 4 formed at the upper end of the lower tube portion 15. It consists of an intermediate eave part 16 projecting from above, and an upper cylindrical part 17 extending above the intermediate eave part 16 and having a cylindrical shape and having a smaller diameter than the lower cylindrical part 15. And lower cylinder part 1
The groove 18 formed on the inner peripheral surface of the heat insulating container 2
It is fixed to the heat insulating container main body 2 by engaging with the protrusion 10 of the heat insulating container body 2. Here, a gasket 19 is inserted between the lower surface of the intermediate eave portion 16 of the shoulder member 4 and the upper end of the mouth portion 2a of the heat insulating container body 2.
The packing 19 is a ring-shaped material made of natural rubber, synthetic rubber, or highly elastic synthetic resin, and maintains airtightness between the heat-insulating container body 2 and the shoulder member 4. Lower cylinder portion 15 of shoulder member 4
A band fixing part 20 for fixing a shoulder band or the like is fixed to the outer peripheral surface of the upper cylinder part 1 of the shoulder member 4.
On the outer circumferential surface of 7 is a male threaded portion 2 that screws into the upper lid 5.
1 is formed. The upper lid 5 is composed of a cylindrical portion 22 and a canopy portion 23 that closes the upper opening of the cylindrical portion 22, and a female threaded portion 24 formed on the inner peripheral surface of the cylindrical portion 22 is connected to the top of the shoulder member 4. It is removably attached to the shoulder member 4 by screwing into the male threaded portion 21 of the cylindrical portion 17 .

In addition, the lunch jar 1 has storage containers 25, 25, 25 for storing rice utensils, etc. stored therein, and a chopstick case provided outside by the fixing member 14 of the bottom member 3 and the band fixing part 20 of the shoulder member 4. 26 is attached, and a shoulder band (not shown) is further attached to the band fixing portion 20.

[Problem that the invention attempts to solve]

By the way, in the case of the above-mentioned launcher, since the shoulder member is only attached by force fitting to the protrusion provided on the outer circumferential surface of the outer tank of the insulating container, there is no need for more effort than is necessary when attaching the top lid. When the top cover is turned with force, the top cover firmly adheres to the shoulder member, and therefore, when the top cover is removed, the top cover and the shoulder member are not removed, and the shoulder member is attached to the periphery of the electric heating container body. I had the inconvenience of spinning around the top. Further, due to repeated idling, the packing wears and its airtightness deteriorates, which causes a problem in that the heat retention of the launcher itself decreases.

[Means for solving problems]

Therefore, in this invention, a flange portion that is bent outward and extends downward is provided at the mouth of the inner tank that connects the inner tank and the outer tank of the insulated container body, and a notch is provided in this flange portion. The above problem is solved by providing a groove in the inner circumferential surface of the shoulder member for fitting and locking the flange portion, and a protrusion fitting in the notch.

〔Example〕

1 to 4 are diagrams showing a launcher as an embodiment of this invention. In these figures, the same elements as those shown in FIGS. 8 and 9 are designated by the same reference numerals. Furthermore, Figure 8,
Descriptions of parts having the same configuration as those in FIG. 9 will be omitted.

The difference between the launcher shown in FIG. 1 and the launcher 1 shown in FIG. 8 is the structure of the heat-insulating container body and the shoulder member.

In the launcher 1 shown in FIG. 1, the heat insulating container main body 2 has a flange portion 27 formed at the mouth portion. As shown in FIG. 2, this flange portion 27 is formed all around the upper end of the inner tank 6, so that the upper end of the inner tank 6 wraps around the upper edge of the outer tank 7. It is bent outward and downward. Here, the distance d between the outer circumferential surface of the tip of the flange portion 27 and the outer circumferential surface of the outer tank 7 is 0.1 to 10
It is about mm. Further, the flange portion 27 has a substantially square notch 28 formed at its peripheral end. Near the mouth of the heat insulating container body 2, a stepped portion 2a and a stepped portion 2b are formed on the inner and outer circumferential surfaces of the heat insulating container body 2, respectively.

On the other hand, in the shoulder member 4, the intermediate eave portion 16 does not protrude from the inner surface of the shoulder member 4 as shown in FIG. A rib 2 having a trapezoidal cross section is formed along the inner circumference of the lower cylinder portion 15 without forming a locking groove 18.
9 is formed, thereby forming a groove 30 having a U-shaped cross section between the lower surface of the intermediate eave portion 16 and the rib 29.
is newly formed. Further, on the inner surface of the lower cylinder part 15 of the shoulder member 4, the rib 29 is not formed around the position corresponding to the notch 28 of the flange part 27 of the heat insulating container main body 2, but instead is formed in the vicinity of the notch 28. A protrusion 31 is formed at a corresponding position. The protrusion 31 is shaped like a rectangular parallelepiped and extends in the axial direction of the lower cylinder portion 15, and is adapted to fit into the notch 28.

The insulating container main body 2 and the shoulder member 4 having such a structure are assembled by inserting the insulating container main body 2 into the lower cylindrical portion 15 of the shoulder member 4 from its mouth, and then
The protrusion 31 of the shoulder member 4 is fitted and locked in the notch 28 of the shoulder member 4, and the groove 30 of the shoulder member 4 is fitted and locked in the flange portion 27 of the heat insulating container main body 2 as shown in FIG. 4 to the heat insulating container body 2. Also, at this time, the intermediate eave portion 1 of the shoulder member 4
A packing 19 is interposed between the lower surface of the shoulder member 6 and the upper end of the opening of the heat insulating container body 2, thereby maintaining airtightness between the shoulder member 4 and the heat insulating container body 2.

In the case of the launcher 1 having such a structure,
Notch 28 in the flange portion 27 of the heat insulating container body 2
By fitting and locking the projection 31 of the shoulder member 4, the insulating container main body 2 and the shoulder member 4 do not rotate idly, so that the top cover 5 can be reliably attached to and removed from the shoulder member 4. As a result, the launch gear 1 due to wear of the packing 19
It is also possible to prevent a decrease in its own heat retention properties.
Furthermore, since the flange portion 27 is formed to extend outward and downward, when the flange portion 27 is engaged with the groove 30 of the shoulder member 4, the flange portion 27 is elastically deformed inward. The heat insulating container body 2 can be easily inserted into the shoulder member 4,
Moreover, once the flange portion 27 is locked in the groove 30, the flange portion 27 elastically returns outward, thereby making it difficult for the heat insulating container body 2 to come off from the shoulder member 4.

Furthermore, in the launcher 1 described above, the position where the insulating container main body 2 is engaged with the shoulder member 4 is located closer to the intermediate eave portion 16 of the shoulder member 4 than in the conventional case, and therefore, the position below the shoulder member 4 is The height of the cylindrical portion 15 can be made lower than that of the conventional one, thereby making it possible to diversify the appearance of the launcher 1 and also to reduce costs by reducing the amount of materials used. Furthermore, the above lunch jar 1
In this case, since there is no need to add new members, cost increases can be suppressed.

5 to 7 are diagrams showing modifications of the above embodiment, in which FIG. 5 shows the first modification, FIG. 6 shows the second modification, and FIG. 7 shows the third modification. ing.

The difference between these modified launchers and the launcher 1 shown in FIG. 1 is the structure of the opening of the heat-insulating container body, and in the heat-insulating container main body 2 shown in FIG. On the other hand, in the heat insulating container main body 2 shown in FIG. 6, the stepped portion 2b is formed only on the outer peripheral surface, and in the heat insulating container main body 2 shown in FIG. It is formed so as to extend outward and downward after being bent in a pinching manner.

The structure of the mouth portion of the heat insulating container main body 2 according to these modified examples can be appropriately selected depending on the appearance of the launcher 1 or the shape of the storage containers 25, 25, 25 accommodated therein.

With the launcher 1 according to these modified examples, the same effects as the launcher 1 shown in FIG. 1 can be obtained.

In the above embodiment, the flange portion 27 was formed by bending the upper end of the inner tank 6 outward and downward, but the flange portion 27 was formed by bending the upper end of the outer tank 7. Furthermore, for example, a new flange member may be provided separately from the inner tank 6 and the outer tank 7 so as to be sandwiched between the inner tank 6 and the outer tank 7. Moreover, although one notch 28 and one protrusion 31 are formed in the heat insulating container main body 2 and the shoulder member 4, the number is not limited to one, and two or more may be formed in each.

[Effect of idea]

As explained above, the metal wide-mouth insulating container of this invention is provided with a flange portion bent outward and extending downward at the inner tank opening of the insulating container body, a notch provided in the flange portion, Furthermore, since the inner peripheral surface of the shoulder member is provided with a groove for fitting and locking the above-mentioned flange portion and a protrusion that fits into the above-mentioned notch, the insulating container main body and the shoulder member do not rotate freely. Therefore, the top lid can be reliably attached to or removed from the shoulder member, and furthermore, it is possible to prevent a decrease in heat retention of the heat insulating container due to abrasion of the packing. Furthermore, when assembling this metal wide-mouth heat-insulating container, the heat-insulating container body can be easily connected to the shoulder member, and these connections can be made strong. Furthermore, the above-mentioned metal wide-mouth insulating container can be diversified in terms of its appearance, and can also reduce costs by reducing the amount of materials used.

[Brief explanation of the drawing]

Figures 1 to 7 are views showing one embodiment of this invention, in which Figure 1 is a sectional side view of a launcher according to this invention, and Figure 2 is a sectional view of a part of the insulated container body of the launcher. 3 is a side sectional view of the shoulder member of the launcher, FIG. 4 is a side sectional view of the main part of the launcher, and each of FIGS. 5 to 7 is a main part side of a modified example of the launcher. 8 and 9 are views showing an example of a conventional launcher, in which FIG. 8 is a side sectional view and FIG. 9 is a side sectional view of the main part. 1...Lunch jar, 2...Insulated container body, 4
... Shoulder member, 5 ... Top lid, 6 ... Inner tank, 7 ... Outer tank, 8 ... Vacuum insulation layer, 27 ... Flange part, 2
8...Notch, 30...Groove, 31...Protrusion.

Claims (1)

[Scope of Claim for Utility Model Registration] A heat insulating container body in which a vacuum insulation layer is provided between a metal inner tank and a metal outer tank, and a mouth portion of the heat insulating container body that connects the inner tank and the outer tank. In a metal insulating container comprising a cylindrical shoulder member attached along the periphery and a top lid attached to the shoulder member, a flange portion bent outward and extending downward at the mouth of the insulating container body. What is claimed is: 1. A metal heat insulating container comprising: a notch in the flange; a groove into which the flange is fitted; and a protrusion into which the notch is fitted.