JPS5935166Y2 - thermos - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the attachment of a shoulder member and a shoulder cover of a thermos flask.

The conventional shoulder member and shoulder cover of a thermos flask have through holes drilled at appropriate intervals on the earthen wall circumferential surface of the shoulder member, and a plurality of bosses corresponding to the through holes provided on the underside of the shoulder cover. With the boss part of the shoulder cover inserted into the through hole of the shoulder member, screws were screwed into the boss part from the bottom surface of the shoulder member to fix the shoulder member and the shoulder cover, but in this type of thermos, each boss part On the other hand, the assembly work was very complicated because each screw had to be screwed in, and the structure was complicated and the assembly cost was high.

The present invention has been devised in view of the above-mentioned drawbacks, and it is an object of the present invention to provide a thermos flask that has a simple structure, is extremely easy to assemble, and can reduce assembly costs.

Embodiments of the present invention will be described below with reference to the drawings.

The shoulder of the thermos flask is an outer case (not shown) that surrounds the inner container.
It consists of a shoulder member 1 to be attached to the upper end and a shoulder chimney 2, and an opening 3 for a stopper is provided in the center of the shoulder member 1.

The opening 3 for the stopper is formed of a vertical wall 4, and a screw 6 for the stopper is provided on the inner periphery of this vertical wall except for the portion communicating with the liquid throat 5.

This vertical wall 4 covers the throat part 5 of the shoulder member, the part communicating with this throat part, and the flange part 7 (excluding the opening 3 for the stopper).

), and the flange part 7 is formed by extending the vertical wall.
An annular upper vertical wall 4' located above is also integrally molded.

An annular projection 8 is provided on the outer periphery of this upper vertical wall 4'.

Reference numeral 9 denotes an annular groove provided between the upper vertical wall 4' and the annular projection 8.

The shoulder cover 2 has an opening 10 for a stopper in the center, and an annular lower vertical wall 11 formed outside the peripheral wall of this opening.

An annular protrusion 12 is provided on the lower inner periphery of the lower vertical wall 11.

An annular flat surface 13 is provided on the outer periphery of the lower surface of the shoulder cover so as to come into contact with the outer periphery of the flange portion 7 of the shoulder member 1 when it is forcefully fitted onto the protrusion 8 of the shoulder member 1.

The shoulder member 1 and the shoulder cover 2 are constructed by aligning the inner periphery of the lower vertical wall 11 of the shoulder cover 2 with the protrusion 8' of the shoulder member and pressing the upper part of the shoulder cover 2. The protrusions 12 of the lower vertical wall 11 of the lower vertical wall 11 cross over and are connected to each other by force springs.

As described above, in the present invention, a vertical wall is formed on the surface surrounding the stopper opening of the shoulder member, a protrusion is provided on the outer periphery of this vertical wall, and a lower part is provided on the circumferential surface surrounding the stopper opening of the shoulder cover. Since a vertical wall is formed and a protrusion is provided on the inner periphery of this lower vertical wall, the shoulder cover can be aligned with the shoulder member and only need to be pressed from the upper part of the shoulder cover, making assembly work extremely easy.Moreover, the structure is simple and assembly is easy. It is possible to significantly reduce costs.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway plan view of an embodiment of the present invention, and Fig. 2 is a partially cutaway plan view of an embodiment of the present invention.
It is a sectional view taken along the line ■-■ in the figure. 1... Shoulder member, 2... Shoulder cover 3.
...Opening for the stopper in the shoulder member, 4...Vertical wall,
5... Throat, 6... Screw, 7...
...Flange part, 8...Protrusion of shoulder member, 9...
...Groove, 10...Opening for the plug in the shoulder cover,
11... lower vertical wall, 12... protrusion of the shoulder cover, 13... annular plane of the shoulder cover.

Claims (1)

[Scope of utility model registration request] In a thermos flask that is provided with a shoulder member having a throat for liquid conduction and a stopper screw in the center opening, and a shoulder cover with a stopper opening in the center, and the shoulder cover is attached to the upper surface of the shoulder member, the above-mentioned A protrusion is provided on the outer periphery of an annular vertical wall forming the central opening of the shoulder member, while an annular lower vertical wall is formed around the outer periphery of the stopper opening on the lower surface of the shoulder cover, and a protrusion is provided on the inner periphery of the lower vertical wall; A thermos flask characterized in that a protrusion on a lower vertical wall of the shoulder cover is forcibly fitted onto the lower surface of the protrusion of the shoulder member from the upper surface of the shoulder member.