JPS596738Y2 - thermos - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a thermos flask, and more specifically, a liquid pumping type thermos flask in which the liquid inside the medium bottle is drawn out through an inner tube and an outer tube using a liquid pumping device such as an air pump. The present invention relates to a mounting structure for an auxiliary pouring pipe in a thermos flask.

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

In Fig. 1, numeral 1 is the thermos bottle body, 2 is the lower mouth member,
3 is a lid that can be opened and closed with respect to the thermos body 1; 4 is a medium bottle;
5 is a bellows-type air pump as a liquid pumping device;
6 is a presser lid for pressing the air pump 5; 7 is a medium bottle 4;
The inner stopper is fitted into the mouth of the bottle, 8 indicates the inner tube of the bottle, and 9 indicates the outer tube of the bottle.

This thermos flask blows pressurized air from an air pump 5 operated by a presser lid 6 into the medium bottle 4 through an air passage 10 formed in the medium stopper 7, and the pressurized air causes the inside of the medium bottle 4 to rise. This is a so-called liquid pumping type thermos flask in which liquid is led out through an inner tube 8, a liquid passage 11 in an inner stopper 7, and an outer tube 9.

Note that, as the liquid pumping device 5, it is of course possible to employ an electric air pump or an axial flow pump instead of the illustrated manual air pump.

The lower mouth member 2 is formed with a hole 12 through which the tip of the bottle outer tube 9 projects.

Further, on the outer periphery of the thermos main body 1, there is a pouring auxiliary pipe 13, which will be described later.
A cover member 15 is attached which has a guide tube 14 into which the guide tube 14 is inserted.

This cover member 15 may be formed integrally with the thermos bottle main body 1.

The upper end opening 14 a of the guide tube 14 is in contact with the lower surface of the mouth edge of the hole 12 of the lower mouth member 2 .

An auxiliary pouring pipe 13 communicating with the outer bottle tube 9 is removably fitted into the guide tube 14 .

The upper end opening 13a of the pouring auxiliary pipe 13 is locked to the upper surface of the mouth edge of the hole 12 of the lower mouth member 2, and the upper end opening 13a
The opening at the tip of the outer bottle tube 9 is exposed inside.

That is, the mouth edge of the hole 12 of the lower mouth member 2 is connected to the pouring auxiliary pipe 13.
It is clamped between the upper end opening 13a and the upper end opening 14a of the guide tube 14, and has a structure to prevent the liquid from leaking from the outer bottle tube 9.

An annular protrusion 16 is provided at an appropriate location on the outer circumference of the auxiliary pouring pipe 13.
are integrally protruded.

On the other hand, an elastic protrusion 17 that engages with the annular protrusion 16 is integrally provided on the guide cylinder 14 by cutting and protruding.

A retaining means 1 that positions the auxiliary pouring pipe 13 with respect to the guide tube 14 by the annular protrusion 16 and the elastic protrusion 17
8 are constructed.

It goes without saying that the elastic protrusion 17 may be separate from the guide cylinder 14 as shown in FIG.

Furthermore, the engagement means 18 is not limited to the annular protrusion 16 and the elastic protrusion 17 shown in the illustrated embodiment; As long as it is detachable and can be positioned, the design may be changed as appropriate.

Next, the effects of the thermos of the present invention are listed below.

That is, according to the present invention, (1) Since the pouring auxiliary tube 13 communicating with the bottle outer tube 9 is removably fitted into the guide tube 14 provided on the outer periphery of the thermos bottle body 1, the pouring assist tube 13 is removably inserted. The tube 13 is removable, making its cleaning and handling very convenient. (2) The auxiliary pouring tube 13 can be positioned with respect to the guide tube 14 via a suitable retaining means 1B. It is possible to prevent the auxiliary pouring tube 13 from falling off even when the thermos bottle main body 1 is reversed when draining the remaining liquid in the medium bottle 4, and it is also possible to prevent the auxiliary pouring tube 13 from shaking when carrying the thermos bottle. It has such practical effects.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view of the upper part of a thermos flask according to an embodiment of the present invention, and FIG. 2 is a sectional view of a main part of a thermos flask according to another embodiment of the present invention. 1...Thermos bottle body, 4...Medium bottle, 5.
...Liquid pumping device, 8...Bottle inner tube, 9.
... Bottle outer tube, 13 ... Pour auxiliary pipe, 14
...Guide tube, 18...Engagement means.

Claims (1)

[Scope of utility model registration request] This is a liquid pumping type thermos flask in which a liquid pumping device 5 such as an air pump draws the liquid inside the medium bottle 4 to the outside through an inner bottle tube 8 and an outer bottle tube 9. Guide tube 1 that allows you to see the opening at the tip of the tube 9
4, and an auxiliary pouring tube 13 communicating with the outer bottle tube 9 is removably inserted into the guide tube 14, and the auxiliary pouring tube 13 is inserted into the guide tube 14 in an appropriate manner. A thermos flask characterized in that positioning is possible via an engaging means 1B.