JPH0341626Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention relates to a thermos flask, and particularly to the exterior structure of a thermos flask in which the outside of the thermos flask body is covered with an exterior case.

``Conventional technology'' As a thermos bottle commonly used in the past, the 7th
There is a thermos flask A shown in FIG. This thermos flask A
To explain, in these figures, reference numeral 1
is the main body of the thermos flask. This thermos body 1 is the 8th
As shown in the figure, there is an inner cylinder 2 made of stainless steel in which a beverage is stored, an outer cylinder 3 made of stainless steel that is provided at a distance from the inner cylinder 2, and the inner cylinder 2 and the outer cylinder 3. It consists of a vacuum layer 4 provided in between and a spout 5 formed at the top of the inner cylinder 2.

An inner stopper 6 is attached to the spout 5 of the thermos main body 1, and an O-ring 10 is provided on the circumferential surface of the inner stopper 6, which abuts against a sealing surface 7 of the spout 5.

A top 11 is attached to the top of the thermos main body 1. This tip 11
The ring is constructed of a member 11a made of resin on the inside and a member 11b made of stainless steel on the outside.
c are in contact with each other and are screwed together so as to cover the entire spout 5.

Further, rings 14 and 15 for attaching a strap 13 and the like are fixed to the outer peripheral surfaces of the upper and lower parts of the thermos main body 1, respectively.

``Problem that the invention attempts to solve'' By the way, in the above thermos A, transportation,
When vibrations are applied during transportation, the thermos bottle main body 1 is likely to be dented or scratched, and these dents, scratches, etc. may significantly reduce the product value.

On the other hand, considering the above problems,
8829 and Utility Model Application No. 57-183928 have been proposed, but these thermos bottles had the following problems.

(1) The attachment structure of the outer case to the thermos is complicated.

(2) It is necessary to provide a part in the outer case to tighten the outer cylinder of the thermos flask.

(3) Since the outer case is used as a part of the structural member, it is necessary to firmly attach the outer case to the thermos flask.

"Means for Solving Problems" This invention was made in view of the above circumstances, and the purpose is to obtain an exterior structure for a thermos flask that protects the thermos flask and is inexpensive to produce. In order to achieve this, a shoulder member engaged with the outer peripheral surface on the spout side of the thermos flask, a bottom member engaged with the outer peripheral surface on the bottom side of the thermos flask, and the thermos flask supported between these two members. A cylindrical body covering the outer periphery of the cylinder is provided.

"Example" The following is an example of this invention in Figures 1 to 6.
This will be explained with reference to the figures.

In addition, in these figures, FIGS. 1 to 3 show the first embodiment, FIG. 4 shows the second embodiment, FIG.
FIG. 6 shows the third embodiment. In the following description, the same reference numerals are given to parts having the same structure in the exterior structure of the thermos flask shown in the conventional technique and the thermos flask shown in each embodiment.

First, the first embodiment will be described with reference to FIGS. 1 to 3. In these figures, reference numeral 20 is an exterior case (exterior structure), and this exterior case 2
0 is composed of a shoulder member 21 made of resin, a bottom member 22, and a metal tube (cylindrical body) 23.

The shoulder member 21 is formed in a cylindrical shape, and has a hole 24 formed in its upper surface into which the pouring spout 5 of the thermos bottle is fitted, and has a hole 24 formed on the upper outer peripheral surface of the outer cylinder 3 of the thermos flask. The ribs (ribs) 30 forcefully fit into the upper part of the thermos flask as indicated by the arrow a-
Movement in the b direction (axial direction) is restricted.

The bottom member 22 is formed in a cylindrical shape with a bottom, and is connected to the shoulder member 21 at the bottom of the thermos by an outer rib 31 formed on the lower outer peripheral surface of the thermos flask outer cylinder 3. Similarly, they are forcibly fitted to restrict movement in the directions of arrows a-b.

The metal cylinder 23 is formed into a cylindrical shape as shown in FIG.
b, 32b, the shoulder member 21 and the bottom member 22
Convex portions 33a, 33a, 33 formed on the inner peripheral surface of
b and 33b (see FIG. 2), so that they are arranged at intervals in the radial direction on the outside of the thermos flask.

The inner diameter of the metal cylinder 23 is approximately equal to or slightly larger than the outer diameter of the thermos flask or the outer diameters of the outer ribs 30 and 31, and the total length of the metal cylinder 23 is such that the shoulder member 21 and the bottom member 22 are connected to the thermos flask. When installed, the distance between these two members is longer by the amount of installation allowance. Next, a process for assembling the exterior case configured as described above will be explained.

(1) By fitting the inner circumferential surface of the bottom member 22 into the outer rib 31 of the outer cylinder 3 of the thermos from below, the bottom member 22 is attached to the bottom of the thermos while expanding outward due to elastic deformation.

(2) By inserting the metal tube 23 into the thermos from above and engaging the protrusions 33b, 33b of the bottom member 22 with the cutouts 32a, 32b of the metal tube 23, the central part of the thermos can be removed. A metal cylinder 23 is arranged in the body.

(3) Connect the inner peripheral surface of the shoulder member 21 to the outer rib 31 of the thermos flask.
From above, the convex portions 33a, 33 of the shoulder member 21 are
By engaging and forcibly fitting the shoulder members a into the notches 32a and 32a of the metal tube 23, respectively, the shoulder member 21 is attached to the upper part of the thermos flask while expanding outward due to elastic deformation.

In the exterior structure of the thermos flask described above, the outer circumferential surface of the thermos flask outer tube 3 is protected by the exterior case 20, which is composed of the shoulder member 21 made of resin, the bottom member 22, and the metal tube 23, so that it can be transported and transported easily. In addition to being able to prevent dents or scratches on the thermos flask during cleaning, it also has the following effects.

(1) The shoulder member 21 and the bottom member 22 are forcibly fitted,
Furthermore, since the metal tube 23 is attached to the thermos by insertion, the attachment structure is simple, and the number of parts and manufacturing steps can be reduced compared to conventional exterior cases.

(2) Since the shoulder member 21 and the bottom member 22 elastically tighten the thermos flask, the mounting structure is simple and there is no need to provide a new member for tightening the thermos flask.

(3) By using stainless steel or copper, for example, as the material for the metal cylinder 23 disposed between the shoulder member 21 and the bottom member 22, a high-class image can be given to the entire thermos flask.

(4) Since the outer case 20 does not constitute a structural member of the thermos flask, it does not necessarily need to have a strong structure, and structural restrictions can be reduced.

(5) The metal tube 23 may be made of, for example, a cut pipe material, so the processing cost is low.

In addition, in the exterior structure of the thermos flask described above, in order to reinforce the metal tube 23 from the back side, an outer rib may be provided at the center of the outer tube 3, as shown by reference numeral 37 in FIG.

Furthermore, although the shoulder member 21 and the bottom member 22 are attached to the thermos by forced fitting using ribs, the present invention is not necessarily limited to this. Also good.

Next, a second embodiment of the present invention will be described with reference to FIG.

In the exterior structure of this thermos flask, a metal tube 40 having a wavy surface is provided in place of the metal tube 23 of the exterior structure of the thermos flask shown in FIGS. 1 to 3.

The metal tube 40 has a wall whose cross-sectional shape is wave-shaped with a constant pitch, and its minimum inner diameter _D1 is smaller than the outer diameter of the outer tube 3.

Exterior case 4 having a metal tube 40 as described above
1, inner protrusions 41, 41, etc. are brought into contact with the outer wall surface of the thermos bottle outer cylinder 3, and smooth parts 43, 43 provided at the upper and lower ends of the outer protrusions 42, 42, etc. By abutting against the inner wall surfaces of the shoulder member 21 and the bottom member 22, respectively, it is possible to attach it to the outside of the thermos flask.

Therefore, in the exterior structure of the thermos flask described above, the same effects as in the first embodiment can be obtained, and the inner protrusions 41, 41 and the outer protrusion 4 of the metal cylinder 40 are
2 and 42 effectively prevent rattling between the outer case and the thermos flask.

Next, referring to FIGS. 5 and 6, we will explain the third aspect of the present invention.
An example will be explained.

In the exterior structure of the thermos flask shown in these figures, the first
Shoulder member 21 of the exterior structure of the thermos flask shown in Figs.
Tapered portions 50 and 51 are provided respectively. These tapered parts 50 and 51 are formed in a stepped wedge shape along the circumferential surfaces of the openings at the ends of the shoulder member 52 and the bottom member 53, and are fitted into the inner wall surface of the metal cylinder 23, respectively. It is becoming more and more common.

With the exterior structure of the thermos flask configured as described above, the same effects as in the first embodiment can be obtained, and the tapered portions 5 of the shoulder member 52 and the bottom member 53
0 and 51 inside the end of the metal tube 23, the joints between the shoulder member 52, the bottom member 53, and the metal tube 23 become smooth on the outside.
This has the effect of improving the appearance.

Note that in the exterior structure of the thermos flask shown in the third embodiment, a space is provided between the outer tube 3 and the metal tube 23 of the thermos flask, but the distance is not limited to this, and the inner diameter of the metal tube 23 and the outer tube 3 are As shown in FIG. 6, the metal tube 23 and the outer tube 3 may be brought into close contact with each other by making the outer diameters substantially equal. Thereby, in the exterior structure of the thermos flask, the thickness of the outer cylinder 3 of the thermos flask can be made thinner, and the weight can be reduced.

"Effect of the invention" As explained in detail above, according to this invention, the shoulder member engaged with the upper outer peripheral surface of the thermos flask;
a bottom member that is engaged with the lower outer peripheral surface of the thermos flask;
Since an exterior case consisting of a cylindrical body supported between these two members and covering the outer periphery of the thermos bottle is provided, the outer periphery of the thermos bottle is protected and the thermos bottle is prevented from being dented or scratched during transportation. In addition to being able to prevent this, the following effects are expected.

(1) Since the shoulder member and the bottom member are forcibly fitted to the thermos via the outer ribs, the mounting structure is simple, and there is no need to provide a new member to tighten the thermos. , the number of parts and manufacturing steps can be reduced compared to conventional exterior cases.

(2) By using stainless steel or copper, for example, as the material for the metal tube disposed between the shoulder member and the bottom member, it is possible to give the entire thermos flask a high-class image.

(3) Since the outer case does not constitute a structural member of the thermos flask, it does not necessarily need to have a strong structure, and structural restrictions can be reduced.

(4) The metal tube can be made by cutting, for example, vipe material, so the processing cost is low.

[Brief explanation of drawings]

1 to 3 are views showing the exterior structure of a thermos bottle shown as a first embodiment of the present invention, in which FIG. 1 is a front sectional view thereof, and FIGS. 2a and 2b are shoulder members and bottom members. FIG. 3 is a perspective view showing the cylindrical body, FIGS. 4 a and 4 b are a plan view and a front view respectively showing the cylindrical body of the exterior structure of the thermos flask according to the second embodiment of the present invention, 5 and 6 are views showing the exterior structure of a thermos bottle shown as a third embodiment of the present invention, in which FIG. 5 is a front sectional view thereof, and FIG. 6 is the exterior structure shown in FIG. 5. 7 and 8 are views showing the structure of a conventional thermos flask, FIG. 7 is a perspective view thereof, and FIG. 8 is a front sectional view thereof. 1...Thermos bottle body, 5...Spout, 20...
Exterior case (exterior structure), 21...Shoulder member, 22
... Bottom member, 23 ... Metal tube (cylindrical body), 30 ...
Outer rib (rib), 31...Outer rib (rib), 3
7...Outer rib (rib), 40...Metal tube (cylindrical body).

Claims (1)

[Claims for Utility Model Registration] (1) A container consisting of a bottomed inner cylinder and an outer cylinder arranged coaxially and connected at the mouth to form a double wall structure,
and a shoulder member surrounding the outer circumferential surface of the spout is locked to the upper outer circumferential surface of the outer tube of the thermos flask, which has a vacuum insulation layer formed by evacuating the space between the inner tube and the outer tube; A bottom member surrounding the bottom is locked to the lower outer peripheral surface of the thermos flask to restrict movement in the axial direction, and a cylinder covering the body of the thermos is fitted between the shoulder member and the bottom member. An exterior structure of a thermos flask characterized by being clamped and supported by a member and a bottom member. (2) The exterior structure of a thermos flask according to claim 1, wherein the cylindrical body is made of stainless steel.