JPH0518438U - thermos - Google Patents

Abstract

(57) [Summary] [Purpose] Make the cup smaller than the outer shape of the shoulder body to make it easier to put on and take off. [Structure] A cup 6 is detachably attached to an inner plug 5 fitted in a mouth portion 14 of a container 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a thermos bottle.

[0002]

[Prior Art]

 In a conventional thermos bottle, as shown in FIG. 7, for example, a container 61 having a vacuum double structure made of stainless steel is fitted with a shoulder body 64 from a shoulder portion 62 to a mouth portion 63 or inside the mouth portion 63. The inner plug 65 is detachably fitted inside the mouth portion 63. A cup 66 is covered so as to cover the mouth portion 63 and the inner plug 65, and is attached to the shoulder body 64 by screw fitting.

[0003]

[Problems to be solved by the device]

 However, in this conventional thermos, when the diameter of the container 61 is large and the volume thereof is large, the outer diameters of the container 61 and the shoulder body 64 are also increased accordingly, and a cup 66 attached to the shoulder body 64 is also required. It was bigger than that. For this reason, there is a problem that it is difficult to attach and detach the cup 66 in a large capacity thermos. An object of the present invention is to solve such a problem, and an object thereof is to provide a thermos having a cup smaller than the outer diameter of the shoulder body and being easily attached and detached.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention is one in which a cup is removably attached to an inner plug fitted into the mouth of a container.

[0005]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a thermos bottle according to the present invention, in which 1 is a vacuum double container made of stainless steel consisting of an inner bottle 2 and an outer bottle 3, 4 is a shoulder body, 5 is an inner stopper, and 6 is a cup. The inner bottle 2 has an inner bottom 8 fitted to the lower end of the inner case 7 and welded to each other. The inner bottom 8 has a protrusion 9 that is pushed outward.

On the outer bottom 10 of the outer bottle 3, a step portion 11 is formed by bending the outer peripheral edge once inward by 90 ° and further outward by 90 °. The inward protruding portion 12 is formed by bending at 90 ° and then at 180 ° outward. The outer bottom 10 is fitted to the lower end of the outer case 13 and welded.

The inner bottle 2 is housed in the outer body 13 before the outer bottom 10 of the outer bottle 3 is welded to the outer body 13. As shown in FIG. It is welded to the portion 15. A ring-shaped stop fitting 16 is fitted between the protruding portion 9 of the inner bottom 8 and the inward protruding portion 12 of the outer bottom 10 to join the mouth portions 14 and 15 to the shake of the inner bottle 2. The department is protected. The lower end of the anti-vibration metal fitting 16 faces the stepped portion 11 of the outer bottom 10 to prevent the anti-vibration metal fitting 16 from falling off when an impact force such as a drop is applied.

A space between the inner bottle 2 and the outer bottle 3 is evacuated through a tip tube 17 attached to the outer bottom 10, and the tip tube 17 is closed to be vacuum-sealed. Reference numeral 18 is an aluminum foil for blocking radiant heat from the inner bottle 1, and reference numeral 19 is a bottom cover fitted on the lower end of the outer case 13.

On the other hand, in the shoulder body 4, as shown in FIG. 2, the inner peripheral protruding portion 21 provided at the lower end is forcibly fitted into the fitting groove 22 formed on the outer circumference of the shoulder portion of the outer bottle 3, and the outer bottle is It covers the outer surface of the outer bottle 3 from the shoulder of 3 to the vicinity of the mouth 15. A male screw portion 23 is formed on the shoulder body 4. The inner stopper 5 includes a stopper main body 24 that is fitted into the mouth portion 14 of the inner bottle 2 and a cover portion 25 that extends from the stopper main body 24 to the outside of the shoulder body 4.

The plug body 24 is hollow, and the inside thereof forms a flow path from the bottom inlet 26 to the top outlet 27. A valve element 29 that opens and closes the inlet 26 by operating a knob 28 is attached to the inlet 26. Further, a seal packing 31 is attached to the lower end of the plug 29 so as to come into pressure contact with a step 30 formed in the inner part of the mouth 14. The cover portion 25 is composed of an upper half small diameter portion 32 and a lower half large diameter portion 33. A male screw portion 34 is formed on the outer surface of the small diameter portion 32, and a male screw portion of the shoulder body 4 is formed on the inner surface of the large diameter portion 33. A female screw portion 35 that is screwed to 23 is formed.

The cup 6 has an internal thread portion 36 formed on the inner surface of the opening edge thereof to be screwed with the external thread portion 34 of the inner plug 5. As shown in FIG. 3, a recess 38 that engages with a projection 37 formed in the thread groove of the male screw portion 34 of the inner plug 5 is formed at the start end of the screw thread of the cup 6, and the inner plug is provided at the end thereof. A stopper 39 is formed so as to abut the end of the thread of the male screw portion 34 of No. 5. As shown by a two-dot chain line in FIG. 3, a stopper 39a with which the starting end of the screw thread of the cup 6 abuts may be formed at the starting end of the screw thread of the male screw portion 34 of the inner plug 5.

In the thermos bottle configured as described above, the cup 6 is screwed into the small diameter portion 32 of the inner stopper 5 and is smaller than the large diameter portion 33. The size of the cup 6 is smaller than that of the one that is screwed to the shoulder body. Therefore, since the cup 6 is small despite its large capacity, the child can easily attach and detach the cup 6. Further, in this thermos, the cup 6 is attached to the small diameter portion 32 of the inner stopper 5, and the large diameter portion 33 of the inner stopper 5 is exposed to the outside from the cup 6. Therefore, if the portion of the large diameter portion 33 is rotated, As shown in FIG. 2, the inner plug 5 can be directly removed with the cup 6 still attached.

As described above, in the structure in which the cup 6 is attached to the inner stopper 5, there is a problem that the inner stopper 5 rotates together when the cup 6 is removed. However, in this embodiment, when the cup 6 is screw-fitted to the inner plug 5, the recess 38 formed in the female thread portion 36 of the cup 6 is formed in the projection 37 provided in the thread groove of the male thread portion 34 of the inner plug 5. Since it is possible to know that the screw-fitting has been completed and the screw-fitting has been completed, the cup 6 is not likely to be tightened more strongly than the inner plug 6, and only the cup 6 can be easily removed. In addition to this embodiment, the screw pitch between the screw fitting portion between the cup 6 and the inner plug 5 and the screw fitting portion between the inner plug 5 and the shoulder body 4 is changed so that the former is more easily removed than the latter. The screw fitting between the cup 6 and the inside plug 5 is left-handed, and the screw fitting between the inside plug 5 and the shoulder body 4 is right-handed, so that the cup 6 and the inside plug 5 can be rotated together. It is possible to prevent it.

In the above-mentioned embodiment, the cup 6 and the inner plug 5 are attachable and detachable by screw fitting, but may be light forcible fitting. Further, the inner plug 5 of the above-described embodiment is mounted by screwing the female screw 35 of the cover portion 25 and the male screw portion 23 of the shoulder body 4, but the invention is not limited to this. Alternatively, the cup may be attached to the inner stopper of the type that is screwed into the mouth portion 14 of the inner bottle 2.

FIG. 5 and FIG. 6 show another embodiment, which is the same as the above-mentioned embodiment, which does not have a shoulder and has a valve in the inner stopper. In the thermos bottle of FIG. 5, the inner stopper 40 comprises a stopper main body 41 and a cover portion 42 that is forcibly fitted to the upper end of the stopper main body 41, and an internal thread 43 formed on the inner peripheral surface of the cover portion 42 has an outer peripheral surface of the container 1. The male screw 44 formed on the surface is directly screw-fitted and attached. Further, the cup 45 has a substantially hemispherical shape, and the projections 46 projectingly provided at four locations on the inner surface of the lower end are lightly and forcibly fitted into the circumferential grooves 47 formed on the outer circumferential surface of the cover portion 42 of the entire plug 41. This makes it removable.

In the thermos bottle of FIG. 6, the inner stopper 50 is composed of the stopper main body 51 and the cover portion 52 as in the embodiment of FIG. 5, but the male screw 53 formed on the outer peripheral surface of the stopper main body 51 is It is attached by being screwed into a female screw 54 formed on the inner peripheral surface of the. In contrast to the embodiment shown in FIG. 5, the cup 66 has projections 57 projecting at four circumferential positions on the outer surface of the cover 52 of the plug body 51 in the circumferential groove 56 formed on the inner circumferential surface of the lower end thereof. It is detachable by being lightly force-fitted.

[0017]

As is apparent from the above description, according to the present invention, since the cup is attached to the inner plug, the cup can be made smaller than the outer diameter of the shoulder body and can be easily attached and detached. In addition, if a part of the inner plug is exposed to the outside as in the example, and you can turn the part of the inner plug exposed to the outside during maintenance etc., the inner plug can be directly removed without removing the cup. It has the effect of being able to do things.

[Submission date] August 21, 1991

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

In the thermos bottle of FIG. 6, the inner stopper 50 is composed of a stopper main body 51 and a cover portion 52, but a male screw 53 formed on the outer peripheral surface of the stopper main body 51 is formed on the inner peripheral surface of the container 1. The female screw 54 is screwed and attached. On the contrary to the embodiment shown in FIG. 5, the cup 55 has projections 57 projecting at four circumferential positions on the outer surface of the cover 52 of the inside plug 50 in a circumferential groove 56 formed on the inner circumferential surface of the lower end thereof. It can be attached and detached by being forcibly lightly fitted.

[Brief description of drawings]

FIG. 1 is a sectional view of a thermos bottle according to the present invention.

FIG. 2 is a partially cutaway front view of the thermos bottle of FIG. 1 showing a state in which an inner stopper and a cup are removed at the same time.

FIG. 3 is a development view of a screw fitting portion of the cup.

FIG. 4 is a sectional view taken along line I-I of FIG. 3.

FIG. 5 is a half sectional view of a thermos bottle according to another embodiment.

FIG. 6 is a half sectional view of a thermos bottle according to still another embodiment.

FIG. 7 is a cross-sectional view of a conventional thermos bottle.

[Explanation of symbols]

 1 ... container, 5 ... inner stopper, 6 ... cup, 14 ... mouth part.

Claims (1)

[Scope of utility model registration request] 1. A thermos bottle, wherein a cup is removably attached to an inner stopper fitted into the mouth of the container.