JPS5925327Y2 - thermos - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a thermos flask, and more particularly to a connecting structure between an outer case and a lower mouth member in a thermos flask.

Conventionally, some thermos flasks have a joint structure in which a folded piece formed around the entire circumference of the opening edge at one end of the outer case is forcefully fitted into the circumferential groove of the peripheral wall of the lower mouth member.

However, in this case, there is a risk of an unexpected accident in which the forcibly fitted portion falls off due to impact or the like, and there is a problem in that there is a particularly high possibility of an accident occurring on the structural side.

In view of the above-mentioned problems, the present invention adopts a connecting structure between the outer case and the lower mouth member constituting the body of the thermos flask by fitting a claw piece and a groove on the structure side, while a folding piece on the handle side. The purpose of this is to strengthen the bonding structure between the two by force-fitting the groove and the groove.

Hereinafter, a thermos flask according to an embodiment of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a thermos bottle body, and 2 denotes a stopper that is tightly fitted into the hot water supply opening of the thermos bottle body 1.

The thermos main body 1 has a metal cylindrical outer case 3.
It is constructed by combining a lower mouth member 4 and a bottom member 5 made of synthetic resin under L, and inside there is a middle bottle 15 made of a vacuum double bottle.
is accommodated.

A beak portion 6 serving as a pouring spout and a handle 7 are integrally formed at the front and rear of the lower mouth member 4, respectively.

At the upper opening edge of the exterior case 3, a horizontal claw piece 8 is integrally formed in a part on the structural part 6 side, and a folding piece 9 is formed in the remaining part.

It is desirable that the forming angle α of the claw piece 8 is approximately 90 degrees on both sides of the center of the beak portion 6.

On the other hand, on the outer periphery of the side wall 10 of the lower mouth member 4, a medium-narrow circumferential groove 11 in which the claw piece 8 is to be fitted and a wide circumferential groove 12 in which the folded piece 9 is to be forcefully fitted are continuously formed. has been done.

Thus, the outer case 3 and the lower opening member 4 are coupled by fitting the claw pieces 8 into the circumferential groove 11 and then forcefully fitting the folded pieces 9 into the circumferential groove 12.

Note that the end of the handle 7 is attached to a screw 13 in the middle of the outer case 3.
It is fixed in place.

Furthermore, the outer case 3 and the bottom member 5 are coupled by screwing the threaded portion 5a on the upper part of the bottom member 5 into a screw ring 14 fixed to the lower end opening of the outer case 3.

At this time, the inner bottle 15 is pushed up and supported by the bottom member 5.

As mentioned above, on the handle 7 side of the thermos bottle body 1, the outer case 3 and the lower mouth member 4 are coupled by force fitting between the folded piece 9 and the circumferential groove 12 and by coupling the handle 7 and the outer case 3. At the same time, on the structural part 6 side, the claw pieces 8 and the circumferential grooves 11 are connected by fitting, and the connection between the two is strong enough to not easily fall off due to impact or the like.

Further, both ends 8a, 8a of the claw piece 8 also act as a stopper.

Next, we will discuss the effects of the thermos flask of this invention.

That is, according to the present invention, the claw piece 8 and the folded piece 9 are formed on a part and the remaining part of the upper opening edge of the outer case 3, respectively.
Circumferential groove 1 on the structural part 6 side formed on the outer periphery of the side wall 10 of the lower mouth member 4
1, and the folded piece 9 is forcefully fitted into the circumferential groove 12 on the handle 7 side to connect the exterior case 3 and the lower mouth member 4, increasing the number of parts etc. It becomes possible to significantly strengthen the connection between the exterior case 3 and the lower opening member 4 (especially on the structure side) without causing any stress.
This has the practical effect of being able to prevent unexpected accidents such as falling of the outer case 3.

Further, since the locking action is achieved by the engagement of both ends 8a, 8a of the claw piece 8 with the boundary between the circumferential grooves 11 and 12,
There is also the advantage that the coupling position between the exterior case 3 and the lower mouth member 4 will not shift.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional side view of the main part of a thermos flask according to an embodiment of the present invention with some parts omitted, Fig. 2 is an enlarged view of part A in Fig. 1, and Fig. 3 is an enlarged view of part A in Fig. 1.
The figure is an enlarged view of part B in FIG. 1, and FIG. 4 is a top perspective view of the outer case of the thermos flask in FIG. 1. 1...Thermos bottle body, 3...Exterior case, 4...Lower mouth member, 5...Bottom member, 6
... Structure, 7 ... Handle, 8 ...
- Claw piece, 9...Folding piece, 10...Side wall, 11°12...Peripheral groove, 15...Medium bottle.

Claims (1)

[Scope of utility model registration request] The thermos main body 1 in which the medium bottle 15 is to be housed is constructed by combining a lower L-1 member 4 made of synthetic resin and a bottom member 5 below a metal outer case 3, and the outer case 3. The upper opening edge of 3 has a claw piece 8 in part and a folding piece 9 in the remaining part.
On the other hand, on the outer periphery of the side wall 10 of the lower mouth member 4, there is a circumferential groove 11 in which the claw piece 8 is to be fitted on the structural part 6 side, and the folded piece 9 is force-fitted on the handle 7 side. A thermos flask characterized in that a circumferential circumferential groove 12 is formed respectively.