JP2566951Y2 - Inner plug mounting structure for lid in pot device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner plug mounting structure for a lid in a pot apparatus for keeping hot water by boiling water.

[0002]

2. Description of the Related Art The structure of a pot device will be described with reference to FIGS. 5 to 7. In the drawings, reference numeral 1 denotes a pot body, and a lid 3 is rotatable at the upper end of the pot body 1 via a hinge pin 2. It is provided in. A bottomed cylindrical container 4 made of metal such as stainless steel is housed and fixed in the pot body 1, and the container 4 integrally has a flange 5 on an upper opening edge, and the flange 5 is 1 is supported by being hung on an annular support frame 1a attached to the upper end of the support frame 1a. A flat heater 6 is attached to the outer bottom surface of the container 4, and the water contained in the container 4 is heated by the heater 6 until it boils once, and then kept as hot water.

The lid 3 is made of a synthetic resin.
An inner plug 7 made of a metal such as stainless steel is attached to a lower surface of the base member via a plurality of screws 8. This inner plug 7
Has a substantially dish shape, and a flange 9 is formed integrally with an opening edge at an upper end thereof. The inner plug 7 fits into the opening at the upper end of the container 4, and the flange 9 closely contacts the flange 5 of the container 4 via the packing 10, whereby the inside of the container 4 is sealed.

A vapor release path 12 is formed in the lid 3, and one end of the vapor release path 12 is opened as an inlet 13, and the other end is opened as an outlet 14 in the atmosphere outside the lid 3. Communicating. Then, the inflow port 13 is inserted into the inner stopper 7.
A substantially arc-shaped ventilation port 15 is formed opposite to the container 4.
The steam at the time of boiling of the hot water in the inside, the said vent 15, the inflow port 13,
It flows out of the container 4 through the steam release path 12 and the outlet 14 in order.

An air pump 18 made of bellows is provided in the lid 3, and an operating body 19 for operating the air pump 18 is provided at an upper end of the lid 3.
When the air pump 18 is operated via the operating body 19, the middle of the steam release path 12 is closed by a valve mechanism (not shown) interlocked with the air pump 18, and the air pump 1 is closed.
Compressed air in the container 8 is sent from the vapor release passage 12 through the inflow port 13 and the ventilation port 15 into the container 4, and the compressed air pressurizes the hot water in the container 4.
The inside hot water flows out of the tap hole 21 at the tip through a hot water channel 20 led out from the bottom surface.

When attaching the inner plug 7 to the lower surface of the lid 3, first, the inner plug 7 is brought into contact with the lower surface of the lid 3,
The air vent 15 is positioned so as to face the inflow port 13 of the steam release passage 12, and in this state, the screws 8 are inserted from the inner plug 7 to the lower surface of the lid 3, and these screws 8 are tightened. The inner plug 7 is fixed to the lid 3.

However, at the time of such a work, there is a possibility that the inner plug 7 is displaced and moved, so that the position of the ventilation port 15 and the position of the inflow port 13 are displaced. The positioning pins 24, 24 are integrally protruded, and when the inner plug 7 is brought into contact with the lower surface of the lid 3, the positioning pins 24, 24 are inserted through the inside of both ends of the ventilation hole 15, and these positioning pins are positioned. The inner plug 7 is positioned by abutting the pins 24, 24 and the inner edges of both ends of the ventilation port 15, and in this state, screws 8 are inserted from the inner plug 7 to the lower surface of the lid 3. 7 is fixed to the lid 3.

[0008]

However, in such a conventional structure, the positioning pins 24, 24 made of synthetic resin are always directly exposed in the container 4,
As a result, the positioning pins 24, 24 are exposed to the high-temperature steam in the container 4, and as a result, the positioning pins 24, 24 gradually deteriorate due to hydrolysis with long-term use. , 24 is generated on the surface of the container 4 by the decomposition, and the powder falls into the container 4 and is mixed into the hot water. In addition, since the tips of the positioning pins 24 protrude from the lower surface of the inner plug 7, when cleaning the lower surface of the inner plug 7 with a cloth, the cloth is caught on the positioning pins 24, making it difficult to clean.

The present invention has been made in view of such a point, and an object of the invention is to prevent a member for positioning with respect to the inner plug from being exposed on the lower surface side of the inner plug. In the present invention, an inner plug mounting structure is provided.

[0010]

SUMMARY OF THE INVENTION In order to achieve such an object, the present invention provides a metal plate having a substantially dish-shaped lid integrally formed with a flange at an opening edge at an upper end thereof on the lower surface of a synthetic resin lid. An inner stopper is attached, and the inner stopper opens and closes the opening of the kettle of the pot device. On the lower surface of the lid, a step along the circumferential direction is formed in a circular shape. An engaging projection is integrally formed, and a folded piece formed by folding an outer peripheral edge of the inner plug toward the upper surface side of the flange is integrally formed on the flange of the inner plug, and a cutout corresponding to the engaging projection is formed on the folded piece. Forming a portion, the folded piece is fitted to the step, the notch is engaged with the engagement protrusion,
In this state, the inner plug is fixed to the lower surface of the lid via a screw.

[0011]

In such a configuration, the inner plug is positioned by engaging the engaging projection formed on the lid with the notch formed on the inner plug. The positioning projection is disposed on the upper surface of the inner plug flange to prevent exposure to the inside of the container. Therefore, the engagement projection is not exposed to high-temperature steam in the container. Further, since the engaging projections do not protrude to the lower surface side of the inner plug, when the lower surface of the inner plug is cleaned with a cloth, the cloth does not get caught.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. Note that the same reference numerals are given to portions corresponding to the conventional configuration, and description thereof will be omitted.

On the lower surface member 3a of the cover 3, a step 30 having a slight step is formed in a circular shape along the circumferential direction of the cover 3. Engagement projections 31 with a slight height are integrally formed on the horizontal portion of the step portion 30 at, for example, three equal portions.

The flange 9 of the inner plug 7 is integrally formed with a folded piece 32 which is folded from the outer peripheral edge to the upper surface side of the flange 9. The folded piece 32 has, for example, a U-shaped notch 33 corresponding to the engagement protrusion 31.
Are formed.

When the inner plug 7 is attached to the lower surface of the lid 3, the folded piece 32 of the inner plug 7 is fitted to the step 30 of the lid 3, and the notch 33 of the folded piece 32 is inserted into the step. 30 are engaged with the engagement projections 31. With this engagement, the inner plug 7 is positioned, and the vent 15 of the inner plug 7 is opposed to and matched with the inflow port 13 on the lower surface of the lid 3. In this state, screws 8 are screwed in from the inner plug 7 to the lower surface member 3a of the lid 3, and the inner plug 7 is fixed to the lid 3 by tightening the screws 8.

In such a configuration, the engaging projections 31 for positioning the inner plug 7 are disposed on the upper surface side of the flange 9 of the inner plug 7 to prevent the inner plug 7 from being exposed to the inside of the container 4. The projections 31 are not exposed to the vapor in the container 4, so that the engagement projections 31 can be reliably prevented from being deteriorated. In addition, since the engaging projections 31 do not protrude to the lower surface side of the inner plug 7, when the lower surface of the inner plug 7 is cleaned with the cloth, the cloth can be smoothly cleaned without being caught by the cloth.

In the above embodiment, the engagement projection 3
1 is formed on the horizontal portion of the step portion 30, but the step portion 3
The number of protrusions may be two or one, and the number of protrusions may be two or one.

[0018]

As described above, according to the present invention, the engaging projection for positioning the inner plug made of a synthetic resin material constituting the lid is exposed on the lower surface side of the inner plug. Therefore, this engaging projection is not exposed to the high-temperature steam in the container, the deterioration can be prevented for a long time, and the cleaning of the lower surface of the inner plug with the cloth does not cause the cloth to be caught. There is an advantage that the operation can always be performed smoothly.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a pot device to which an embodiment of the present invention is applied.

FIG. 2 is a perspective view of the pot device to which the embodiment of the present invention is applied in an inverted state of a lid.

FIG. 3 is an exploded sectional view of a main part of the embodiment of the present invention.

FIG. 4 is a plan view of a main part of one embodiment of the present invention.

FIG. 5 is a side view of a conventional pot device.

FIG. 6 is a sectional view of a part of the pot device.

FIG. 7 is a perspective view of the lid of the pot device in an inverted state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 3 ... Lid 4 ... Container 7 ... Inner plug 8 ... Screw 9 ... Flange 30 ... Step part 31 ... Engagement protrusion 32 ... Folding piece 33 ... Notch

Claims (1)

(57) [Scope of request for utility model registration] 1. A metal inner plug having a substantially dish-like shape and a flange integrally formed on an opening edge of an upper end thereof is attached to a lower surface of a synthetic resin lid, and the inner plug is used for a container for water heating of a pot device. In the one that opens and closes an opening, on the lower surface of the lid, a step along the circumferential direction is formed in a circular shape, and an engaging projection is integrally provided on the step, and a flange of the inner plug is provided. A folded piece formed by folding the outer peripheral edge on the upper surface side of the flange is integrally formed, a cutout portion corresponding to the engaging projection is formed in the folded piece, and the folded piece is fitted to the step portion. The inner plug mounting structure for a lid in a pot device, wherein the notch is engaged with the engaging projection, and the inner plug is fixed to a lower surface of the lid via a screw in this state.