JPH0243309Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to an air pot opening/closing device, and in particular, the invention is designed to open and close the water supply passage and the air passage by rotating the water supply pipe around its axis. be.

[Conventional technology and its problems]

Generally, in an air pot, a pumping pipe inserted into the inner bottle is connected to a water supply pipe.
Furthermore, the inner bottle and the inside of the bellows of the air pump are connected to each other in order to pressurize the inside of the inner bottle. Therefore, when the bottle falls over, the hot water inside the inner bottle may leak or flow into the bellows, and the hot water that has flowed into the bellows may remain therein for a long period of time.

In order to avoid such problems, there are air pots that have a closing plug inside the inner plug that is activated by its own weight when the container falls over, but the closing effect when the container falls over is not sufficient.

The above problem is not as much of a problem with tabletop air pots that are normally used in an upright position, but it becomes a serious problem with portable types, especially those that are carried horizontally.

Therefore, this invention solves the above-mentioned problems and provides an inner stopper opening/closing device for an air pot that does not spill hot water even if it falls over or is carried sideways, and there is no risk of hot water flowing into the bellows. With the goal.

[Means for solving problems]

In order to solve the above problems, this idea
A water supply port 33 communicating with the water supply pipe 9 is protruded from the side of the air pot, the water supply pipe 9 is inserted into the inner stopper main body 8, an air passage 12 and a water supply passage 13 are provided in the inner stopper main body 8, and the inner stopper main body 8 is provided with an air passage 12 and a water supply passage 13. In an air pot inner stopper opening/closing device which is provided with a switching valve A for opening and closing the water supply passage 13 and is configured to open and close by rotating the water supply pipe 9, the switching valve A is connected to the water supply pipe 9. Water supply communication hole 2 facing water supply passage 13 at its predetermined rotation angle
3 is provided, and a water supply communication hole 2 is provided on the outer peripheral surface of the water supply pipe 9.
3 and at a predetermined rotation angle.
A first gasket 21 of a size that surrounds the open end of the air passage 12 is attached, and a second gasket 21 of a size that can surround the open end of the air passage 12 is attached adjacent to the first gasket 21 in the circumferential direction.
When the gasket 22 is attached, the rotation range of the water supply pipe 9 is in a closed state where the first gasket 21 and the second gasket 22 block the water supply communication hole 23 and the air passage 12, respectively, and in a closed state where the water supply pipe 9 is surrounded by the first gasket 21. The structure is such that the water supply communication hole 23 and the water supply passage 13 face each other and are in an open state in which the second gasket 22 is removed from the air passage 12.

[Effect]

When the water supply pipe 9 is set to a rotation angle in a closed state, the water supply communication hole 23 is closed by the first packing 21 and the air passage 12 is also closed by the second packing 22. Therefore, even if the pot is placed sideways in this state, hot water in the inner bottle 1 can be prevented from flowing into the air pump 15. Further, when the water supply pipe 9 is rotated from the above angle to the open state, the water supply communication hole 23 communicates with the water supply passage 13, and the air passage 12 communicates with the air communication hole 14 of the valve chamber 10. Therefore, when the air pump 15 is operated, the inside of the inner bottle 1 is pressurized, and hot water is discharged to the outside through the water supply pipe 9.

〔Example〕

As shown in FIGS. 1 and 2, the air pot according to this invention connects a shoulder body 2 to the upper part of a stainless steel double-walled medium bottle 1 by a screw connection, and The opening periphery 3 is fitted into the opening inner periphery 5 of the inner bottle 1 via a packing 4. Further, an inner plug main body 8 is fitted into the opening periphery 3 via a packing 6.

A switching valve A is provided inside the inner stopper main body 8. This switching valve A has the following configuration. That is, a cylindrical valve chamber 10 with a bottom is formed in the inner stopper main body 8 and is concentric with the water supply pipe 9. The valve chamber 10 has an open end on the side surface of the inner stopper main body 8, and the water supply pipe 9 is inserted through the open end. The water supply pipe 9 is rotatable around its axis, and a gasket 11 attached to the middle of its outer circumferential surface is pressed against the inner circumferential surface near the open end of the valve chamber 10 to maintain liquid tightness.

An air passage 1 is provided on the upper peripheral wall of the valve chamber 10.
2 is formed, and a water supply passage 13 is formed in the lower peripheral wall of the valve chamber 10. Further, an air communication hole 14, which will be described later, is formed in the bottom surface of the valve chamber 10.

The air passage 12 communicates with the inside of the bellows 16 of the air pump 15 mounted on the upper part of the inner plug main body 8, and the water supply passage 13 communicates with the inside of the bellows 16 of the air pump 15 mounted on the upper part of the inner plug main body 8, and the water supply passage 13 is connected through a joint member 17 inserted and fitted from the lower surface of the inner plug main body 8. It communicates with the pumping pipe 18. The joint member 17 is provided with an air hole 19, which is connected to the air communication hole 1 described above.
4 communicates with the inside of the inner bottle 1 through this air hole 19.

In the valve chamber 10, a modified packing 20 shown in FIGS. 3 and 4 is mounted around the water supply pipe 9. This deformed patchkin 20
consists of a rectangular first gasket 21 and a slightly smaller rectangular second gasket 22.
One side of the packing 21 and the square second packing 2
2 and one side thereof are commonly integrated at a common side 24.

The first packing 21 described above is attached around the water supply communication hole 23 formed in the water supply pipe 9 and is formed in a size that can surround the open end of the water supply passage 13. Further, the second gasket 22 is formed in a size that can surround the open end of the air passage 12. Therefore, as shown in FIG. 5A, when the water supply pipe 9 is rotated to the closed state, the water supply communication hole 23
is closed by the first gasket 21 and cut off from the water supply passage 13. Further, the air passage 12 is closed by a second packing 22, and the air passage 12 is closed by a second gasket 22.
2 and the valve chamber 10 are cut off. In such a closed state, the outer side 21' of the first packing 21 and the outer side 22' of the second packing 22 are located at symmetrical positions with respect to the center of the water supply pipe 9.
The common side 24 of No. 1 and 22 is located at a center angle of 90 degrees with respect to both outer sides 21' and 22'.

As shown in FIG. 5A, the air passage 12 and the water supply passage 13 are vertically opposed to each other, and the width of the air passage 12 is wider than the width of the water supply passage 13. Therefore, in the state shown in FIG. 5A where the water supply pipe 9 is in the closed position, the central angle α between the outer side 21' of the first gasket 21 and the side closest to the open end of the water supply passage 13 is the second
The outer side 22' of the packing 22 and the side closest to the opening end of the air passage 12 are larger than the central angle β,
For example, α=25° and β=13° are set.

The rear end of the water supply pipe 9 (the end inside the valve chamber 10) is closed as shown in FIG. 2, and a quarter-circular rotation angle regulating piece 26 is protruded from the rear end surface (see FIG. 3). The regulating piece 26 fits into a semicircular recess 27 provided on the bottom surface of the valve chamber 10. The regulating piece 26 rotates within a range of 90 degrees within the recess 27 and cannot rotate beyond that, so the rotation range of the water supply pipe 9 is 90 degrees.
It is regulated within the range of degrees. The aforementioned air communication hole 14 is formed in this semicircular recess 27.

Further, when the water supply pipe 9 is rotated in the opening direction (see arrow B in FIG. 5a), it goes through the state shown in FIG. 5b and then becomes the open state shown in FIG. 5c. In the open state, the water supply communication hole 23 and the water supply passage 13 face each other,
Moreover, it is shielded from the surroundings by the first gasket 21. On the other hand, the second gasket 22 is removed from the air passage 12 and communicates the air passage 12 with the valve chamber 10.

Further, as shown in FIG. 2, a telescopic pipe 28 is fitted to the outer peripheral surface of the water supply pipe 9, as shown in FIG. The expandable pipe 28 can freely expand and contract with respect to the water supply pipe 9, but when it rotates, it is restricted by the engagement of the ribs 29 and rotates together. In addition, a water supply port 33 is provided by bending the tip, and a water supply port 33 is provided at the water supply port 33.
A cover 31 with a knob 30 is attached.

In addition, in FIG. 1, the assembly of the water supply pipe 9, the telescopic pipe 28, the packing 11, and the deformed packing 20 shown in FIG. This clarifies the positional relationship of 8. In addition, 32 in the figure is a lid body. Further, the angle θ in FIG. 1 indicates the rotation angle of the water supply pipe 9.

The embodiment of this invention is as above,
Next, its effect will be explained.

When pouring hot water into the inner bottle 1, open the lid 32, pull out the inner stopper body 8, water pumping pipe 18, water supply pipe 9, telescopic pipe 28, etc. all together, open the inner bottle 1, and pour hot water. Thereafter, the inner stopper main body 8 and the like are returned to their original states, and the lid body 32 is closed.

Now, as shown in Figure 2 or Figure 5 a, if the air pot falls over or is carried sideways with the water supply pipe 9 set at a closed angle, the hot water in the inner bottle 1 will leak. , as shown by arrow a, flows into the valve chamber 10 through the air hole 19 and the air communication hole 14, but since the air passage 12 is closed by the second packing 22, the air does not flow into the air pump 15. can avoid. Further, since the water supply communication hole 23 is closed by the first gasket 21, water flowing into the water pipe 9 can be avoided. Furthermore, leakage to the outside of the valve chamber 10 is prevented by the seal 11. Furthermore, hot water flowing from the pumping pipe 18 into the valve chamber 10 via the water supply passage 13 (see arrow b) is also regulated in the same manner as described above. Therefore, even if the pot is turned sideways, hot water will not flow into the air pump 15 or leak from the water supply pipe 9 to the outside.

Next, as shown in FIGS. 6 and 7, the cover 3
When the extendable pipe 28 is pulled out by pinching the knob 30 of No. 1 and rotated in the opening direction, the water supply pipe 9 also rotates (see arrow B in Fig. 5 a). As shown in figure b,
The air passage 12 communicates with the inside of the inner bottle 1 via the valve chamber 10 and the water supply passage 13 (see arrow c). At this point, the water supply communication hole 23 of the water supply pipe 9 is still in a closed state. The reason why the inside of the inner bottle 1 is communicated with the air passage 12 as described above before the water supply pipe 9 is opened is by releasing the internal pressure inside the inner bottle 1 in advance, so that hot water is not released when the water supply pipe 9 is opened. This is to prevent it from protruding. Furthermore, when the rotation angle exceeds the angle α and reaches the fully open state (90 degrees), the water supply communication hole 23 is opened as shown in Fig. 5c.
and the water supply passage 13 are surrounded by the first packing 21 and face each other, and the water supply pipe 9 communicates with the inside of the medium bottle 1. In this state, the regulating piece 26 is inserted into the air insertion hole 14.
The air overlaps the gap x between the two (Fig. 5c).
(see figure).

When the air pump 15 is operated here, the air flows in the order of air passage 12 → valve chamber 10 → the above-mentioned gap x of air communication hole 14 → air hole 19 → inner bottle 1, as shown by the chain arrow d in FIG. It is supplied into the medium bottle 1 through the communication path, increasing the internal pressure.
As a result, the hot water passes through the pumping pipe 18 → water supply passage 13 → water supply communication hole 23 → water supply pipe 9 in this order, as shown by the chain arrow e, and is discharged to the outside from the water supply port 33.

In addition, in the above-mentioned open state, a passage (chain arrow d) for supplying air is formed between the inner bottle 1 and the air pump 15, so when the pot falls over, hot water flows into the air pump 15 through that passage. However, when the water supply pipe 9 is opened, the air pot is used in an upright position and is not laid down, so there is no need to worry about hot water flowing into the air pump 15.

Furthermore, when the knob 30 is pinched and operated in the opposite manner to the above, the water supply pipe 9 is closed again.

〔effect〕

This invention has the effect of preventing hot water from leaking or flowing into the bellows of the air pump when the device falls over or is carried horizontally.

[Brief explanation of drawings]

Fig. 1 is a partially omitted perspective view of the embodiment, Fig. 2 is a cross-sectional view of the same as above, Fig. 3 is an exploded perspective view of the part to which the packing is attached, Fig. 4 is a partially omitted perspective view of the deformed packing; Figures a to c in Figure 5 are enlarged sectional views taken along the line V--V in Figure 2 for explaining the operation, and Figures 6 and 7 are perspective views of the cover portion. A...Switching valve, 1...Inner bottle, 8...Inner stopper body, 9...Water supply pipe, 10...Valve chamber, 11...
Packaging, 12... Air passage, 13... Water supply passage, 14... Air communication hole, 15... Air pump, 16... Bellows, 18... Lifting pipe, 1
9...Air hole, 20...Deformed gasket, 21...
...First packing, 22...Second packing, 23...
...Water supply communication hole, 26...Regulation piece, 33...Water supply port.

Claims (1)

[Claims for Utility Model Registration] (1) A water supply port 33 communicating with a water supply pipe 9 is projected from the side of the air pot, the water supply pipe 9 is inserted into the inner plug body 8, and an air passage 1 is inserted into the inner plug body 8.
2 and a water supply passage 13, a switching valve A for opening and closing the water supply passage 13 is provided in the inner plug main body 8, and the switching valve A is opened and closed by rotating the water supply pipe 9. In this case, the water supply pipe 9 is used as the above switching valve A.
A water supply communication hole 23 facing the water supply passage 13 at a predetermined rotation angle is provided in the water supply pipe 9.
A first gasket 21 having a size that surrounds the water supply communication hole 23 and the opening end of the water supply passage 13 at a predetermined rotation angle is attached to the outer peripheral surface of the air passage 12 adjacent to the first gasket 21 in the circumferential direction.
The second gasket 22 is large enough to surround the opening end of the second gasket 22.
is attached, and the rotation range of the water supply pipe 9 is changed between a closed state where the first gasket 21 and the second gasket 22 respectively block the water supply communication hole 23 and the air passage 12, and a water supply communication surrounded by the first gasket 21. An inner plug opening/closing device for an air pot, characterized in that the hole 23 and the water supply passage 13 are opposed to each other and the second gasket 22 is in an open state where it is removed from the air passage 12. (2) The inner plug opening/closing device for an air pot according to claim 1, which is a utility model registration and is formed by integrally connecting adjacent sides of the first gasket 21 and the second gasket 22.