JPS5845634Y2 - Bottom structure of thermos bottles, 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 assembly structure of the bottom of a conventional thermos flask. This bottom structure has a winding part 3 formed at the lower end of the outer case 2, and an upper part of the winding part 3. A bottom flap 11 with a female thread 13 carved on the inner peripheral surface is placed thereon, and a bottom cover 21 is screwed onto the bottom flap 11 from below.

However, with this bottom structure, when assembling, that is, when pressing the bottom plate 21 from below to the bottom pad 11 placed on the same winding part 3 of the outer case 2 and screwing it into place, the outer case 2 is almost straight. Since it is cylindrical, the bottom plate 11 is the bottom plate 21.
The assembly work was difficult because the parts were pushed upward and escaped upwards.

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

Hereinafter, the present invention will be explained based on the embodiment shown in FIGS. 2 to 5. 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 exterior case 2 has a coiled portion 3 that is curled inward over its entire circumference, and the tip of the coiled portion 3 has an inward flange portion 4 that is bent inward. has been done.

The flange portion 4 is formed at a higher position than the lower end 3a of the winding portion 3.

The bottom pad 11 is molded from an elastically deformable synthetic resin, and has a hanging portion 15 below a ring-shaped base portion 12.

The base portion 12 of the bottom pad 11 has an outer diameter that almost fits inside the inner peripheral surface directly above the winding portion 3 of the outer case 2, and furthermore, a female thread 13 is carved on the inner peripheral surface of the base portion 12. There is.

At the lower end 14 of the base body 12, the base body 1
An annular hanging portion 15 having an outer diameter smaller than the outer diameter of 2 is vertically provided.

Four claw pieces 16, 16, . . . are formed on the outer surface of the hanging portion 15 at equal intervals (90° intervals) and facing outward.

The claw pieces 16, 16, . is formed.

This minute gap S is for inserting the inward flange portion 4 formed at the inner end of the inner winding portion 3 of the outer case.

Note that the hanging part 15 hanging down from the lower end 14 of the bottom base part 12 does not have to hang around the entire circumference, for example, as shown in FIG. It is also possible to hang it vertically in the form of legs only on the forming part.

In the case of FIG. 6, a notch 4a is formed in the flange portion 4 to match the hanging portion 15, and the hanging portion 15 and the notch 4a are formed in the flange portion 4.
The rotation of the bottom flap 11 can also be prevented by the engagement of the bottom flap 11.

Further, in this case, since the hanging portion 15 is elastically flexible, it can be inserted into the notch 4a very easily, and the bottom flap can be easily fitted.

The bottom plate 21 is formed by an exterior 22 having a knot hole 23 in the center and a medium threaded 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 rising peripheral wall 24 to engage with the female thread 13 of the bottom pad 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.

Next, the method of assembling the bottom of this thermos flask 1 and its operation during assembly will be explained. First, the bottom structure is made by inserting the bottom flap 11 from below into the upper part of the inward flange part 4 of the inner winding part 3 of the outer case. The base portion 12 of the bottom flap 11 is placed on the flange portion 4.

Since the bottom pad 11 is elastically deformed, it can be easily fitted into the exterior case 2.

Note that when the bottom base part 12 is placed on the flange part 4, the flange part 4 is connected to the lower end 14 of the base part 12 and the claw piece 1.
6, 16... Gap between S, S...
to intervene within.

In this way, the flange portion 4 is held between the lower end 14 of the base body and the claw pieces 16, 16, etc., so that the bottom flap 11 can be prevented from moving in the vertical direction at the lower end of the outer case 2. do not have.

Next, insert the female screw 13 of the bottom plate 11 into the bottom plate 21 from below.
are screwed together, and furthermore, the internally threaded member 30 of the bottom plate 1 is screwed together with the exterior 2.
2 and tighten the inner bottle 5 in the vertical direction, the assembly work of the bottom of the thermos bottle is completed.

Note that when the bottom plate 21 is screwed onto the bottom flap 11, even if the bottom flap 11 is pushed upward by the bottom plate 21, the bottom flap 11 will not be able to hold its claws 16, 16...
・does not escape upwards because it engages with the lower side of the flange portion 4. In this way, the bottom structure of the thermos flask, etc. of the present invention wraps the lower end of the outer case 2 inwardly, and the inner wound portion 3 extends inward to form a flange portion 4, while the bottom flap 11
is formed with a claw piece 16 that engages with the lower surface of the flange portion 4, so when assembling the bottom of a thermos flask, etc., the bottom part 1 is attached.
Even when the bottom plate 21 is screwed onto the bottom plate 1, the bottom plate 11 does not escape upward, and the assembly work of a thermos flask or the like can be easily and efficiently carried out.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view of the bottom of a conventional thermos flask, FIG. 2 is a vertical sectional view of the bottom of a thermos flask according to an embodiment of the present invention, and FIG. 4 is an exploded bottom perspective view of the bottom structure of the thermos flask in FIG. 2; FIG. 5 is an explanatory view of the operation of the bottom structure of the thermos flask in FIG.
FIG. 6 is a partial perspective view of the bottom of a thermos flask according to another embodiment of the present invention. 1...Thermos flask, 2...Outer case, 3
...Inner winding part, 4...Flange part, 11
...Bottom part, 12...Base part, 13
...Female thread, 14...Bottom end of base, 1
5... Hanging piece, 16... Claw piece, 21.
...Bottom plate, S...Gap.

Claims (1)

[Scope of utility model registration request] The lower end of the outer case 2 is rolled inward, and the same rolled part 3
extends inward to form a flange portion 4, while an annular bottom flap 11 fitted inside the lower end of the outer case 2 is placed on the inner part 3. Base part 1
2, and a hanging part 15 that extends below the base part 12 all around or partially, and further includes a flange part on the outer surface of the hanging part 15 when the hanging part 15 is fitted into the exterior case 2. 4. A bottom structure for a thermos flask, etc., characterized by forming a claw piece 16 that engages with the lower surface of the thermos bottle.