JPS598654Y2 - Pneumatic thermos flask - Google Patents

Description

[Detailed description of the invention] The invention is an air pressure thermos flask that uses air pressure to pour out the liquid in the bottle.In particular, it has a structure in which a water guide pipe that penetrates the outer case is attached to the liquid outlet on the lower surface of the inner wall of the draining member. The purpose is to provide a thermos using air pressure in which the lid can be screwed into the draining member and the liquid guide pipe can be easily and reliably attached.

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

1 is a pneumatic thermos flask that pours out the liquid in an inner bottle 3 by the pressure of a bellows pump 2, and includes an outer case 4 surrounding the outer periphery of the inner bottle, a draining member 5 attached to the upper end of the outer case, and a draining member 5. An inner stopper 7 inserted into a liquid supply opening 6 provided in the center, a lid body 8 with a built-in bellows pump detachably attached to the top surface of the drainer, and a liquid outlet 9 provided in the drainer.
It is composed of a liquid guide pipe 10 fitted into the pipe.

The drainage member 5 attached around the upper end of the outer case has a liquid supply opening 6 in the center, and the opening of the inner bottle 3 is attached to the lower part of this liquid supply opening via an annular packing 11. .

A threaded portion 12 into which a threaded portion of a cover described later is screwed is provided around the upper portion of the inner wall of this draining member, and a liquid outlet portion 9 is formed at the lower front side of this threaded portion.

This liquid outlet portion 9 is shaped like a funnel facing downward.

This drainage member has a liquid supply opening 6, a threaded portion 12, and a liquid outlet 9 integrally formed.

A hole 17 for a liquid conduction pipe (described later) is bored in the upper front surface of the exterior case 4, and a bottom cover 19 is fitted to the lower end via a screw ring 18, and a hole 19 for supporting the inner bottle 3 is fitted in the center of the bottom cover. Tightening member 2
0 is screwed on.

The liquid guiding pipe 10 is made of a metal pipe such as stainless steel, and has an annular protrusion 30 at its rear end, and a funnel-shaped collar part that corresponds to the inner wall of the liquid outlet part 9 of the draining member at the upper tip of the protrusion. There are 31.

The liquid guiding pipe 10 is force-fitted from above the liquid outlet part 9 so that the outer wall of the collar part contacts the inner wall of the liquid outlet part of the draining member and the annular convex part is engaged with the outer wall of the lower end of the liquid outlet part. The distal end penetrates through the liquid conduit hole 17 of the outer case and projects outward from the case.

The lid body 8 consists of the bellows pump 2, a spring 13 built into the bellows pump, a push plate 14 at the upper end of the bellows pump, an upper lid 15 surrounding the bellows pump, and a lower plate 16 fitted around the lower end of the upper lid. It has become.

This lower plate 16 is provided with a lower plate threaded portion 32 that is screwed onto the threaded portion 12 of the draining member 5, which screws the lid body onto the draining member.

The inner stopper 7 is partially hollow so as to send the air pressure of the bellows pump inside the lid into the inner bottle, and the lower end of the inner stopper has a tip located at the bottom of the inner bottle to send the liquid inside the inner bottle. A lifting pipe 22 is provided, and the rear end of this lifting pipe is connected to the rear end of a discharge pipe 23 within the inner stopper.

The distal end of the discharge pipe 23 is inserted with a gap into the collar 31 of the liquid guide pipe 10 fitted into the liquid outlet of the draining member.

Reference numeral 24 is an integrated cover on the front surface of the outer case, which is hollow inside and whose upper and lower parts are screwed to the outer case. The tip of the liquid guide pipe 10 is inserted through it.

As described above, in the present invention, a threaded part for screwing the lid is provided around the upper part of the inner wall of the draining member to make the lid a screw-in type, and a funnel-shaped liquid outlet is provided below the threaded part. The threaded part and the liquid outlet part are integrally formed, and an annular convex part is provided at the rear end of the liquid conduit that penetrates the outer case and projects its tip outward, and above the convex part. A flange corresponding to the liquid outlet part is provided in the shape of a funnel, and the liquid guide pipe is force-fitted from above the liquid outlet part, so the discharge pipe of the inner stopper is extremely short and it is difficult to insert and remove the inner stopper. It is extremely smooth and can be operated very easily during use by simply rotating the lid and attaching and detaching the inner stopper.

Furthermore, the liquid guide pipe can be fixed extremely easily, and assembly work is also facilitated.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view showing an embodiment of the present invention, and Fig. 2 is a longitudinal sectional view showing an embodiment of the present invention.
It is an enlarged view of part A of the figure. 1... Thermos flask, 2... Bellows pump, 3... Inner bottle, 4... Outer case,
5...Draining member, 6...Liquid supply opening, 7...Inner stopper, 8...Lid body, 9...
...Liquid outlet, 10...Liquid guide pipe, 12.
...Threaded part, 23 ...Discharge pipe, 30
...Convex part, 31...Brim part.

Claims (1)

[Scope of utility model registration request] A draining member is attached to the upper end of the outer case surrounding the inner bottle.
A liquid supply opening is provided in the center of this draining member, an inner stopper is inserted into the liquid supply opening, a lid body with a built-in bellows pump is removably attached to the top surface of the draining member, and the pressure of the bellows pump is A thermos flask for dispensing the liquid inside the inner bottle, wherein a threaded part for screwing the lid is provided on the upper circumferential surface of the inner wall of the draining member, and the tip of the discharge pipe of the inner stopper is attached to the lower end of the threaded part with the lower surface facing. A funnel-shaped liquid outlet is provided to place the liquid.
A metal liquid guiding pipe which is integrally formed with a drainage member having a threaded part and a liquid outlet part, has a rear end in contact with the liquid outlet part, and has the other end protruding outside the thermos bottle through the outer case. established,
An annular convex portion is provided at the rear end of the liquid conduit, and a funnel-shaped collar portion corresponding to the inner wall of the liquid outlet portion is provided above the convex portion;
The liquid guide tube is forcibly fitted from above the liquid outlet so that the flange of the liquid guide tube comes into contact with the inner wall of the liquid outlet and the annular convex part is engaged with the outer wall of the lower end of the liquid outlet. A thermos flask that uses air pressure.