JPS5827717Y2 - electric heating pot - Google Patents

Description

[Detailed explanation of the idea] This invention relates to an electric heating pot.

In addition, in this specification, an electric heating pot includes all electric heating pots equipped with an inner container made of metal, glass, etc. with an electric heater attached to the bottom, and includes, for example, manual or electric heating pots. Possible examples include an electric heat insulating pot with an air set, an electric heat insulating pot with an electric hot water pump having a hot water pump or a pumping station blade at the bottom of a Yuzawa riser pipe provided in the stopper.

Conventionally known thermos pots are equipped with an inner container (double-walled glass bottle) that has a heat-retaining function, and the heat-retaining function of the inner container minimizes the loss of heat from the hot water inside the inner container. This is to keep the hot water warm.

Therefore, due to its mechanism, conventional heating pots are unable to maintain the water temperature at a constant temperature for a long period of time, and it is also impossible to maintain the water temperature at a temperature higher than the initial temperature when the water is put into the heating pot. It was impossible to heat it up.

Therefore, in order to eliminate the above-mentioned drawbacks, electric heating pots having an electric heater attached to the inner container have recently been developed and put on the market.

The purpose of this invention is to provide a new mounting structure for the inner container of such an electric heat-retaining pot.

This invention will be explained below based on an air-equipped electric heating pot as an embodiment shown in the drawings.

The exterior case 1 is composed of a side wall 2 made of a metal plate whose outer surface is decorated and whose upper part gradually tapers, and a bottom wall 4 fixed to the lower end of the side wall 2 by means described below. ing.

An annular stepped portion 8 is formed at the upper end of the side wall 2,
A horizontal portion 10a of an annular portion 10 having a slanted cross section formed by bending the outer periphery of the mouth member 9 is placed on the annular stepped portion 8, and the lower mouth member 9 has a bowl-shaped portion 11. An opening 12 is formed at the bottom of the bowl-shaped portion 11.

A reinforcing member 13 and a female threaded ring body 30 made of resin and having a female threaded portion 32 are attached to the bent edge 3 of the cross-sectional shape forming the opening 12 as follows.

That is, before forming the horizontal portion 3b of the bent edge 3, the annular reinforcing member 13 is fitted into the hanging portion 3a of the bent edge 3, and the reinforcing member 1
The inner horizontal edge 14 of the reinforcing member 13 is brought into contact with the back surface of the bowl-shaped portion 11, and the outer horizontal edge 15 of the reinforcing member 13 is brought into contact with the back surface of the annular stepped portion 8 at the upper end of the side wall 2 of the exterior case 1. After fitting the upper inner flange 31 of the body 30 to the hanging part 3a, the lower end of the hanging part 3a is bent to the lower surface of the inner flange 31 to form a horizontal part 3b, so that the female screw member 30 is attached to the reinforcing member 13.
It is also attached to the bent edge 3.

A metal inner container 17 is housed in the outer case 1, and the inner container 17 includes a bottomed cylindrical main body 18 having a heater winding part 19 at the lower part, and a folded edge 22 formed at the upper end. The upper member 20 includes an opening 21 and a shoulder 23 connected to the lower end of the opening 21.
The upper circumferential edge of the main body 18 and the lower circumferential edge of the upper member 20 are wound together to form an integral body.

An electric heater 24 is wound around the heater winding part 19 at the bottom of the main body 18, and a thermostat 25, an overheat protector 26, and other necessary members are attached to the bottom wall of the main body 18. Cylindrical bodies 6 having screw holes 5 are installed at every 120°, and the bottom wall 4 is attached to the screw holes 5.
A screw 16 is screwed through the screw insertion hole 7 .

A plastic male threaded ring body 33 having a male threaded portion 35 is fitted onto the outer periphery of the mouth portion 21 of the inner container 17, and the upper part of the mouth portion 21 is inserted into the male threaded ring body 33! The male threaded ring body 33 is fixed to the mouth portion 21 by bending and pressing it against the upper surface of the M 34 to form the folded edge 22.

Note that during the process of forming the folded edge 22, the male ring body 33 is also pressed downward, and at that time, a gap 36 is formed between the male ring body 33 and the outer peripheral surface of the mouth portion 21. Therefore, the male threaded portion 35 of the male threaded ring body 33 easily bends in the vertical direction and curves outward or inward, and then when the force pressing the folded edge 22 is released, the male threaded ring body 33 itself Due to the elastic force it has, it attempts to return to its original state, that is, a stress-free state, but its movement is regulated by the folded edge 22, so the male ring body 33 moves between the folded edge 22 and the shoulder 23. Since it is in a tensioned state, the male threaded ring body 33 is firmly attached to the mouth portion 21.

The male ring body 33 is screwed onto the female ring body 30 to form an annular packing 28 interposed between them.
The lower opening member and the inner container 17 are connected in a watertight manner by sandwiching them.

A pivot member 40 is attached to a required portion of the upper end of the exterior case 1, and a lid 42 is attached to the pivot member 40 via a connecting pivot pin 41 so as to be freely openable and closable, and if necessary, to be openable and detachable. A lid engaging hook 44 is swingably attached to the iron lid 42 by a pin 43, and an operating portion 45 at the top of the lid engaging hook 44 is exposed to the outside through an opening 46 of the lid 42. On the other hand, the lower hook portion 47 is bifurcated so as to straddle a pouring pipe 71, which will be described later, and the lid engaging hook 44 is biased counterclockwise in FIG. 1 by the action of a spring 49. Then, when the lid 42 is closed, the hook portion 47 can naturally engage with the hook receiver 48 of the outer case 1.

The lid 42 includes an upper cover 52 having an opening 50 in the center and an upper half 51 of the pouring pipe protection cover on the side, and a bottom plate 53 that closes the lower part of the upper cover 52. Specifically, the air pump 54 has the following configuration.

That is, the lower end of a bellows member 55 is attached to the bottom plate 53 in an airtight manner, the top plate 56 is attached to the upper end of the bellows member 55, and a transparent hole (L57) is formed in the center of the top plate 56, A valve body 58 having a stopper 59 is fitted into the through hole 57 so as to be movable up and down, and a spring 60 is interposed between the valve body 58 and the bottom plate 53 to constantly bias the bellows member 55 upward. .

Note that when the valve body 58 is biased by the spring 60 and moves upward with respect to the top plate 56, it allows air to flow into the bellows member 55, and on the other hand, the valve body 58 allows air to flow into the bellows member 55, while allowing the valve body 58 to freely move up and down into the opening 50 of the upper cover 52. When pushed and moved downward by the fitted press body 61, the valve body 58 and the top plate 56 are brought into close contact with each other so that the air inside the bellows member 55 does not flow out.

The pressing body 61 can be prevented from inadvertently moving downward when not in use by the locking action of a Q-tuck lever 62 provided on the upper cover 52 so as to be horizontally swingable.

The compressed air in the air pump 54 is configured to flow out through an air outlet 63 formed in the bottom plate 53.

A plug 64 having a gasket 76 on the outer periphery is removably fitted into the mouth 21 of the inner container 17, and an air supply passage 65 is formed in the plug 64. A gasket 66 is attached to the upper end of the passage 65 in close contact with the back surface of the periphery of the air outlet 63, and a check valve 68 that is constantly biased upward by a spring 67 is housed in the air supply passage 65. The check valve 68
This is to prevent the compressed air that has flowed into the inner container 17 from flowing back into the air pump 54.

A hot water temperature raising pipe 69 whose lower end reaches near the bottom wall of the inner container 17 is attached to the plug body 64, and a ball valve chamber 70 is formed at the upper end of the hot water temperature raising pipe 69. A molten metal pouring pipe 71 whose tip is directed downward is connected to the ball valve chamber 70 .

Inside the ball valve chamber 70, there is a ball valve support wall 72 having a hot water passage 73 with a downward slope toward the center of the inner container 17.
A ball valve 74 is supported on the support wall 72, and the ball valve 74 is configured to close the pouring pipe 71 when the electric heating pot falls over.

A lower half 75 of the pouring pipe protective cover corresponding to the upper half 51 of the pouring pipe protective cover of the lid 42 is attached to the exterior case 1 .

In the figure, 77 is a heat insulating material interposed between the outer case 1 and the inner container 17, and 78 is a handle.

To explain how to use the above-mentioned air-equipped electric heating pot, first, water or hot water is poured into the inner container 17, and then the stopper 64 is fitted into the mouth portion 21 and the lid 42 is closed.

After that, the plug at the end of the electric cord (not shown) is inserted into an outlet, the electric heater 24 is heated, and the inner container 1 is heated.
Heat the water or hot water in 7 to a constant temperature.

When using hot water in the pot, first release the lock lever.
62 from the pressing body 61, then remove the pressing body 61 from the spring 60.
Just press it several times against the spring force.

Then, compressed air is pressed into the inner container 17 through the air supply passage 65, so the hot water is pressed by the compressed air, and is sent out from the hot water pouring pipe 71 through the hot water heating pipe 69 and the boat valve chamber 70. It turns out.

Next, this invention will be explained based on a different embodiment shown in FIG.

Note that the same members as those shown in FIG. 1 are designated by the same reference numerals.

The male threaded ring body 33' is composed of a male threaded part 35' and an outer collar 34' connected to the lower end of the male threaded part 35'.
' and the outer circumferential surface of the mouth 21 of the inner container 17 are in close contact, and the lower surface of the outer collar 34' and the upper surface of the shoulder 23 are in close contact, and the externally threaded ring body 33' and the mouth 21. Since the frictional resistance against relative movement with the shoulder portion 23 is large,
This example has the advantage that the male threaded ring body 33' is less likely to idle with respect to the inner container 17.

Note that the male threaded ring body and the female threaded ring body are relative, and it is also possible to attach the male threaded ring body to the lower mouth member and the female threaded ring body to the mouth of the inner container.

Further, the female and male threaded ring body is not limited to being formed from one member, but may be formed from multiple members and combined to form a ring body, and the ring body may be formed from a plurality of members, and may be formed from the back side of the opening of the lower mouth member or the mouth of the inner container. It can be attached to the surrounding area.

According to this invention, one of the female and male threaded ring bodies is attached to the back side of the opening of the lower mouth member, and the other is attached to the periphery of the mouth of the inner container, and the female and male threaded ring bodies are attached to the back side of the opening of the lower mouth member. The opening of the inner container on the side is watertightly screwed together via an annular packing, that is, the lower mouth member and the inner container are watertightly connected by a simple screwing operation. Therefore, it has the advantage of good assembly workability and easy replacement of the annular packing.

In addition, even if watertightness is lost due to deformation of the annular packing during use, the watertightness between the mouth part of the inner container and the lower mouth member can be maintained by simply increasing the tightening force of the double-threaded ring body. It is possible to recover.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, and FIG. 1 is a vertical sectional view with the middle part omitted, and FIG. 2 is a longitudinal sectional view of the main part showing an embodiment of another aspect of this invention. 1...Exterior case, 9...Lower opening member,
12...Opening, 17...Inner container, 2
1... Mouth part, 24... Electric heater,
28... Annular packing, 30... Female threaded ring body, 33° 33'... Male threaded ring body, 42.
...Lid, 64 ... Stopper, 69 ...
・Hot water temperature raising pipe, 71...Pouring pipe.

Claims (1)

[Scope of utility model registration request] an outer case having a lower opening member at the upper part having an opening at the bottom; an inner container housed within the outer case and having an electric heater attached to the lower part; In the electric heating pot, the electric heating pot is provided with a lid that is removably fitted into the mouth of the inner container and has a Yuzawa riser pipe and a pouring pipe. One of the pair of female and male threaded ring bodies is provided on the back side of the opening of the lower mouth member, and the other is provided around the mouth of the inner container, for connecting and fixing the opening of the lower mouth member. An electric heat-retaining pot in which the back side and the mouth of the inner container are watertightly screwed together by the female and male threaded ring bodies with an annular packing interposed therebetween.