JPH0243313Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a device for opening and closing the inner plug of an air pot, and more particularly to a device that opens and closes the inner plug by rotating a water supply pipe around its axis.

[Conventional technology]

Insert the water supply pipe with the water supply port protruding from the side of the air pot into the inner stopper while keeping it airtight.
The insertion part constitutes a switching valve that switches between the water supply passage and the air passage, and by rotating the water supply pipe from the outside using a knob provided at its tip, the switching valve is switched to open and close the inner valve. For air pots with opening/closing devices,
This applicant has previously filed an application for utility model registration (for example, see Utility Model Application No. 15415-1983).

The above-mentioned air pot has the advantage of not having to worry about hot water leaking when it is carried horizontally because it becomes sealed when the water supply pipe is operated in the closing direction.

[Problems to be solved by invention]

However, the switching valve part with the packing that supports the water supply pipe on the wall of the valve chamber exists inside the inner stopper, that is, in the center of the air pot, and there is no other part to support the water supply pipe. However, since the water supply pipe is operated using a knob at the tip of the water supply pipe that protrudes outside the air pot, there is a problem in that the water supply pipe does not rotate smoothly.

The purpose of this invention is to solve the above-mentioned problems and provide an inner stopper opening/closing device that allows smooth operation of the water supply pipe.

[Means for solving problems]

In order to solve the above-mentioned problems, this invention has a knob cover that consists of a cylindrical part that fits around the knob of the water supply pipe, and a fitting part that fits into a notch provided in the shoulder body of the air pot. A collar is provided on the outer periphery of the water supply pipe that passes through the fitting portion, and that slides into contact with the inner circumferential surface of the cylindrical portion.

[Effect]

When the knob is rotated, the collar of the water supply pipe slides against the inner peripheral surface of the cylindrical portion of the knob cover and rotates. Since the knob cover is fitted to the shoulder body of the pot through its fitting portion, the water supply pipe rotates while being indirectly supported by the shoulder body.

〔Example〕

Figure 1 shows an example of a sealed air pot, in which a shoulder body 2 is attached to the top of a stainless steel double-walled medium bottle 1 with screws 3, an opening 4 is formed in the center of the shoulder body 2, and the medium bottle is closed. A gasket 6 is interposed between the mouth portion 5 of the inner plug 7 and the shoulder body 2, and another gasket 8 is interposed between the outer periphery of the inner stopper 7 and the opening portion 4.

The inner stopper 7 has a valve chamber 10 into which a water supply pipe 9 is inserted.
is formed, and a switching valve mechanism is formed. This valve chamber 10 communicates with an air pump 12 through an air passage 11 provided at its upper part, and with a water supply passage 13 at its lower part. Water supply passage 1
3 is the pumping pipe 1 via the valve chamber 15 of the safety valve 14.
It communicates with 6. Further, the valve chamber 10 is provided with an air hole 17 that communicates with the inside of the inner bottle 1.

A water passage hole 18 is formed in the portion of the water supply pipe 9 inserted into the valve chamber 10, and this water passage hole 18
A gasket 20 facing the air passage 11 is integrally formed on one side of a gasket 19 (see FIG. 3) surrounding the air passage 11, and together constitute a switching valve mechanism.

Further, the water supply pipe 9 is inserted into the valve chamber 10 in an airtight manner by a gasket 21 attached to its outer periphery.

Note that a locking member 22 is provided at the upper part of the valve chamber 10.
The portion 2 that is engaged and extends above the water supply pipe 9
2' locks the water supply pipe 9 and prevents the water supply pipe 9 from coming off.

As shown in FIG. 2, the shoulder body 2 is formed with a recess 23 and a cutout 24 on the outside thereof, and the water supply pipe 9 projects to the outside through the recess 23 and the cutout 24.

A circular collar 25 is integrally formed on the protruding portion of the water supply pipe 9, and a water supply port 26 bent at 90 degrees is attached to the tip thereof. Said brim 25
A fitting tube 27 is integrally formed on the front surface of the holder, and a knob 28 is forcibly fitted into the fitting tube 27. The knob 28 closes the front surface of the fitting cylinder 27, and has a projection 29 on its upper outer peripheral surface for a finger to rest on.

The knob cover 30 includes a cylindrical portion 31 that covers the knob 28 and the fitting tube 27, and
It consists of a non-circular fitting part 32 formed at one end of the cylindrical part 31. The water supply pipe 9 passes through the fitting portion 32, and the collar 25 is in sliding contact with the inner peripheral surface of the cylindrical portion 31. Also, the fitting part 3
2 is removably fitted into the notch 24.

The embodiment of this invention has the above configuration,
Next, its effect will be explained.

As shown in FIG. 2, this pot replenishes hot water into the inner bottle 1 by pulling out the inner stopper 7 and the water supply port 26 integrated therewith. After that, insert the inner stopper 7, etc.

When the knob 28 is operated so that the water supply port 26 faces to the side as shown in the figure, the air passage 11 is closed by the gasket 20 and the water supply hole 1
8 is in a state of being closed by another seal 19. (See Figure 4A) Next, when the water supply port 26 is directed downward by operating the knob 28 in the direction of arrow A in Figure 4A, one gasket 20 is removed from the air passage 11, and The water passage hole 18 faces the water supply passage 13, and its circumference is sealed by the other gasket 19 (see figure 4b).

When the knob 28 is operated, the circular collar 25 rotates together with the water supply pipe 9 while being guided by the inner peripheral surface of the cylindrical portion 31 of the knob cover 30.

Further, since the inside of the valve chamber 10 and the air passage 11 communicate with each other, the inside of the inner bottle 1 communicates with the air passage 11 via the air hole 17 and the valve chamber 10. Therefore, when the air pump 12 is operated, the internal pressure of the inner bottle 1 increases, and water is supplied to the outside from the water supply port 26 through the pumping pipe 16, the valve chamber 15 of the safety valve 14, the water supply passage 13, and the water supply pipe 9. be done.

The safety valve 14 closes the valve hole 35 by moving under its own weight when the pot falls over, thereby preventing hot water from flowing out. When the pot is in an upright position, it rests on the ribs 36, and the hot water flows from the bottom to the top through the gaps between the ribs 36 (see FIG. 5).

〔effect〕

As described above, this invention has a structure in which the brim of the water supply pipe is brought into sliding contact with the inner peripheral surface of the knob cover, and the fitting part of the knob cover is fitted into the shoulder body, so that the water supply pipe is indirectly connected to the shoulder body. Since it is supported by , it has the effect of rotating smoothly.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the embodiment, FIG. 2 is an exploded perspective view of the same, and FIG. 3 is an enlarged sectional view of a part of the same.
Figures a and b in Figure 4 are explanatory diagrams of the action shown in an enlarged cross-section taken along the - line in Figure 1, and Figure 5 is a partially cutaway exploded perspective view of the safety valve portion. 1...Middle bottle, 2...Shoulder body, 9...Water supply pipe, 10...Valve chamber, 11...Air passage, 13...
...Water supply passage, 17...Air hole, 18...Water hole, 19, 20...Puttlekin, 21...Puttlekin, 23...Recess, 24...Notch, 25...Brim, 26...Water supply port , 27... fitting tube, 28...
Knob, 29...protrusion, 30...knob cover,
31... Cylindrical part, 32... Fitting part.

Claims (1)

[Scope of utility model registration request] Insert the water supply pipe with the water supply port protruding from the side of the air pot into the inner stopper while keeping it airtight.
The inner plug of the air pot has a switching valve that switches between the water supply passage and the air passage at its insertion part, and the valve is switched by turning the water supply pipe with a knob provided at the tip of the water supply pipe. In the opening/closing device, a knob cover consisting of a cylindrical part that fits around the knob and a fitting part that fits into a notch provided in the shoulder body of the air pot is provided, and a knob cover that passes through the fitting part is provided. An inner stopper opening/closing device for an air pot, characterized in that a collar is provided on the outer periphery of the water supply pipe that slides into contact with the inner circumferential surface of the cylindrical portion.