JPS6030Y2 - Inner bottle structure of metal magic bottle - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to the inner bottle structure of a metal magic bottle.

BACKGROUND ART Conventionally, in an inner bottle of a metal magic bottle, a substantially bowl-shaped inner bottle bottom body forming a bottom portion and a substantially cylindrical inner bottle body are joined by butt welding.

This welding work is performed by inserting the inner bottle bottom body and the inner bottle body into a cylindrical mold and butting them together.The mold is designed to allow the inner bottle parts to be inserted and removed. Since the inner bottle bottom and body were made to have a slightly large diameter, there was a risk that both the inner bottle bottom and the body would be misaligned within the mold, resulting in welding defects at the joint between the two.

Therefore, in the past, one side of the inner bottle bottom or body was made thicker to prevent welding defects from occurring at the joint even if there was a slight misalignment, but this not only increased material costs, but also There was a drawback that the overall weight of the magic bottle increased.

It is also possible to perform lap seam welding instead of butt welding, but in this case, a thin gap will be created inside the inner bottle at the joint, and if liquid is poured into the inner bottle, moisture will remain in the gap. There are problems such as corrosion of welds and unsanitary conditions due to rotting liquid.

Therefore, the inner bottle has to be butt welded.

The present invention has been developed in view of these problems, and is a metal charm that can be easily butt-welded between the inner bottle bottom and the body without increasing the thickness of one of the plates, and which does not cause welding defects. The purpose is to provide an inner bottle structure.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings, which are examples of the present invention.

In the drawings, 1 is a metal inner bottle, 6 is a metal outer bottle, and the space between the inner bottle 1 and the outer bottle 6 is a vacuum chamber 7.

The inner bottle 1 is made by joining and integrating a substantially cylindrical inner bottle body 2 having an integrally formed bottle opening 2a and a substantially bowl-shaped inner bottle bottom body 3.
Slanted portions 2b and 3a that slightly protrude outward are formed near the joint.

The inner bottle 1 is joined as shown in FIG.

That is, when the inner bottle body 2 is inserted into the cylindrical upper mold 4 and the inner bottle bottom 3 is inserted into the concave lower mold 5, the ends 4a and 5a of both molds 4 and 5 are inserted into the body 2. and the inclined part 2b of the bottom body 3
, 3a comes into contact with the outer surface.

Due to the inclined parts 2b and 3a, the body 2 and the bottom body 3 are positioned at the center of the upper mold 4 and the lower mold 5, respectively, and the roundness of the body 2 and the bottom body 3 is obtained.

Then, when the upper mold 4 and the lower mold 5 are moved in opposite directions, the end surfaces of the inclined portions 2b and 3a match exactly,
Butt welding is performed in this state.

Therefore, the body 2 and the bottom body 3 may be made of thin plates having the same thickness, and there are no welding defects at the joints, and although there are slight depressions due to the inclined parts 2b and 3a, no liquid remains.

The outer bottle 6 is composed of three members: an outer bottle shoulder body 8, an outer bottle body 9, and an outer bottle bottom body 10 from above, which are joined to each other by lap seam welding or TIG welding. .

Body rings 13 and 14 are attached around the joint 11° between the outer bottle shoulder body 8 and the outer bottle body 9 and the joint 12 between the outer bottle body 9 and the outer bottle bottom 10, respectively.

The torso rings 13 and 14 are made of annular rubber material and are in close contact around the joints 13 and 14 due to their own elasticity.

A hanging string 15 and a square ring 16 for attachment are attached to a part of the body rings 11 and 12.

The outer bottle shoulder body 8 is formed with a male screw 8a into which the stopper 17 is screwed and a male screw 8b into which the lid 18 which also serves as a stopper is screwed.

A getter 20 is attached to the inner surface of the upper end of the outer bottle body 9 with a holding fitting 19, and absorbs hydrogen gas generated from the outer surface of the inner bottle or the inner surface of the outer bottle to prevent a decrease in the degree of vacuum.

A metal bottom cover 21 is fitted around the outer bottle bottom 10, and the upper end of the bottom cover 21 abuts the lower surface of the joint 12 between the outer bottle body 9 and the outer bottle bottom 10. , is integrally connected to the joint 12 by a lower body ring 14.

In the opening hole 21a formed in the center of the bottom of the bottom cover 21,
A gold resin bottom plate 23 having a protection tube 23a that protects the chip tube 22 is fitted and fixed.

As is clear from the above description, according to the present invention, an inclined surface slightly protruding outward is provided near the joint between the inner bottle bottom body and the inner bottle body, so that the bottom body and the body can be molded together. It can be positioned in a perfect circle without misalignment, and it is possible to butt weld accurately.

Therefore, both the bottom body and the body may be made of thin plates with the same thickness.
There is no need to use different plate thicknesses for the bottom body and body as in the past.
Additionally, unlike lap seam welding, moisture does not remain in the gaps, eliminating problems such as weld corrosion and rot.

[Brief explanation of drawings]

FIG. 1 is a half-sectional front view of a metal magic bottle according to the present invention, and FIG. 2 is a cross-sectional view showing a method of butt welding the inner bottle. 1... Inner bottle, 2... Inner bottle body, 3...
... Inner bottle bottom body, 2b, 3a ... Inclined part, 6
...Outer bottle, 7...Vacuum chamber.

Claims (1)

[Scope of utility model registration request] Consisting of a metal inner bottle and a metal outer bottle surrounding the inner bottle,
In a metal magic bottle formed by evacuating the space formed between an inner bottle and an outer bottle, the inner bottle has a substantially bowl-shaped inner bottle bottom and a substantially cylindrical inner bottle body. A sloping part that slightly protrudes outward is formed near the joint between the inner bottle bottom body and the inner bottle body, and the end surfaces of the sloping part are joined by butt welding. The inner bottle structure of the metal magic bottle is a feature.