JPS5845635Y2 - Bottom structure of thermos flasks, etc. - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the bottom structure of thermos flasks, ice jars, etc.

FIG. 1 shows a general method for assembling the bottom of a conventional thermos flask. This bottom structure has an inner part 3 formed at the lower end of the outer case 2, and an inner part 3 at the top of the inner part 3. A bottom pad 11 having a female thread 13 carved on its circumferential surface is placed thereon, and a bottom plate 21 is screwed onto the bottom pad 11 from below.

However, with this bottom structure, when assembling the bottom panel 21, that is, when pressing the bottom panel 21 from below against the bottom pad 11 and screwing it together, since the outer case 2 has a substantially right cylindrical shape, the bottom pad 11
The assembling work has been difficult because the bottom plate 21 is pushed by the bottom plate 21 and escapes upward, or the bottom flap 11 rotates together with the bottom plate 21.

The present invention was made in order to solve the above-mentioned conventional problems, and the purpose is to propose a bottom structure that facilitates the assembly work of thermos flasks, etc. .

Hereinafter, the present invention will be explained based on the embodiment shown in FIGS. 2 to 4. This embodiment shows the bottom structure of a thermos flask.

This thermos flask 1 has a spout member 6 mounted on the upper part of a substantially right cylindrical outer case 2 that houses a medium bottle 5 therein, and a bottom part consisting of a bottom flap 11 and a bottom plate 21 at the lower end of the outer case 2. It is constructed by attaching a material unit 7.

Note that a handle 8 is attached to the upper part of the outer surface of the exterior case 2.

The lower end of the outer case 2 has an inner part 3 that is curled inward over its entire circumference, and a small window hole is formed by cutting a part of the inner part into a rectangular shape on the inner surface of the inner part 3. 4,4...
... are formed at four equal intervals of 90°.

It is sufficient to have at least one small window hole 4, but if two or more holes are formed, it will be easier to assemble the bottom structure.

Incidentally, it is preferable to punch out the small window holes 4, 4, . . . with a press in advance when molding the original plate of the outer case.

The bottom pad 11 is molded from an elastically deformable synthetic resin, and is formed by extending a hanging portion 15 from a lower step portion 14 of a ring-shaped base portion 12.

The base portion 12 of the bottom flap 11 has an outer diameter that is almost inscribed in the inner peripheral surface directly above the inner playing portion 3 of the outer case 2, and each inner diameter surface of the base portion 12 and the hanging portion 15 below it A female thread 13 is engraved.

Furthermore, drooping portions 15 having an outer diameter smaller than the outer diameter of the base portion 12 are vertically provided on the lower end step portion 14 of the base portion 12 along its entire circumference.

This hanging portion 15 has four claw pieces 16, 16, etc., which engage the small window holes 4, 4, etc. formed in the inner playing portion 3, respectively, on its outer surface. It is formed in the direction.

The female screw 13 formed on the inner surface of the bottom plate 11 is connected to the bottom plate 21.
However, if the internal thread 13 is also formed on the inner surface of the hanging part 15, even if the bottom flap 11 has a structure in which the claw piece 16 is formed, There is no need to increase the overall height.

The bottom plate 21 is formed by an outer cover 22 having a knot hole 23 in the center, and a medium screw member 30 screwed into the knot hole 23.

The exterior 22 has an outer rising peripheral wall 24 and an inner rising peripheral wall 25.
A male thread 26 is carved on the outer surface of the outer rising peripheral wall 24 to engage with the female thread 13 of the bottom flap 11, and a medium thread member 30 is formed on the inner surface of the inner rising peripheral wall 25. A female thread 27 is engraved on the outer surface of the holder to engage with a male thread 31 engraved on the outer surface of the holder.

The medium screw member 30 is for supporting the medium bottle 5 by tightening it from below, and a receiving portion 32 for supporting the bottom surface of the medium bottle 5 is formed at the upper end of the medium screw member 30. There is.

To explain the method of assembling the bottom part of this thermos flask 1 and its function during assembly, this bottom structure is first placed on the inner part 3 of the outer case 2 from below the bottom part 11 of the outer case 2.
Press in.

Since this bottom flap 11 is elastically deformed, it can be easily fitted.

In addition, in this case, the lower end step part 14 of the base part 12 of the bottom flap 11
is seated on the internal playing part 3, and the claw pieces 16, 16, . , 4..., respectively.

In this way, the bottom flap 11 does not move to the inner surface of the lower end of the outer case 2 in the rotational direction and the vertical direction with respect to the lower end of the outer case.

Next, insert the female screw 13 of the bottom plate 11 into the bottom plate 21 from below.
The work of assembling the bottom of the thermos bottle is completed by screwing them together, and further screwing the internal threaded member 30 of the bottom plate 21 into the outer case 22 to tighten the medium bottle 5.

Note that when the bottom plate 21 is screwed onto the bottom flap 11, even if the bottom plate 21 pushes the bottom flap 11 upwards, the claws 16 of the bottom flap 11 will not engage with the small window holes 4 of the internal playing section 3. Since it is inserted, it will not escape upward, and the bottom flap 11 will not rotate together with the bottom plate 21.

Next, to explain the effects of the present invention, according to the bottom structure of the thermos flask, etc. of the present invention, a small window hole is formed on the inner surface of the inner part 3 formed at the lower end of the outer case 2 and opens toward the center of the outer case. On the other hand, a claw piece 16 that engages in the small window hole 4 is formed on the bottom flap 11 inscribed on the inner surface of the lower end of the outer case 2.
Even when they are screwed together, the bottom flap 11 does not escape upward or rotate together with the bottom plate 21, making it possible to easily and efficiently assemble a thermos flask or the like.

Further, according to the present invention, the hanging part 15 formed on the bottom flap 11 extends below the lower end step part 14 of the bottom flap base part 12, and the hanging part 15 has a claw piece 16 on the outer surface. Since the space below the lower step part 14 of the base body part 12 can be effectively used, the internal thread 13 for screwing the bottom plate 21 is formed on the inner surface of the hanging part 15, so that the nail Even if the bottom flap 11 has a structure in which the pieces 16 are formed, there is an effect that there is no need to increase the overall height of the bottom flap 11.

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view of the bottom structure of a conventional thermos flask;
The figure is a bottom vertical sectional view showing the bottom structure of a thermos flask according to an embodiment of the present invention, FIG. 3 is a partially enlarged sectional view of the bottom structure of the thermos flask shown in FIG. 2, and FIG. FIG. 3 is a downward perspective view of the structure in a separated state of the outer case and the bottom flap. 1...Thermos flask, 2...Outer case, 3
...Internal section, 4...Small window hole, 11...
...Bottom part, 12...Base part, 13...
...Female screw, 14...Bottom end of base, 15.
...Drooping part, 16...Claw piece, 21...
...Bottom board.

Claims (1)

[Scope of utility model registration request] An appropriate number of small window holes 4 that open toward the center of the outer case are formed in the inner part 3 formed at the lower end of the outer case 2, and an annular window hole 4 that is fitted inside the lower end of the outer case 2 is formed. The bottom part 11 is formed with a base part 12 that is seated on the inner part 3, and a hanging part 15 extending below the lower step part 14 of the base part 12. has the small window hole 4 on its outer surface when it is inserted into the exterior case 2.
A bottom structure for a thermos flask, etc., characterized in that a claw piece 16 that fits inside is formed, and a female screw 13 for screwing a bottom plate 21 is formed on the inner surface of the claw piece 16.