JPH0223203Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric pot equipped with a liquid level display device.

Conventionally, as shown in FIGS. 3 and 4, an electric pot has a bottomed cylindrical stainless steel inner container 2' having a flange 10' at the upper end, and the front wall of the inner container 2' is Connection pipes 9' communicating with the inside of the inner container 2' are provided at the upper and lower ends, respectively, and a heat source 3' such as a band heater is stretched around the bottom outer periphery of the inner container 2. An exterior case 1' is provided,
A shoulder member 5' is attached to the upper end of the outer case 1', and an inwardly protruding flange part 24' that locks the flange part 10' of the inner container 2' is provided in the central opening of the shoulder member 5'. A notch 14' through which the connecting pipe 9' is inserted is provided on the front side of the part 24', communicating with the upper and lower connecting pipes 9' of the inner container 2', and connecting the front surface of the inner container 2' and the outer case 1'. A liquid level display tube 12' is provided between them, an inner plug 6' is detachably attached to the upper surface of the flange portion 24' of the shoulder member 5', and an upper lid 8 with a built-in bellows pump 7' is installed on the upper surface of the shoulder member 5'. A bottom body 4' is provided at the lower end of the outer case 1', and the bottom body 4' is screwed to the bottom of the inner container 2' via an angle 17'. In this type of electric pot, a frame body 26' is provided with a through hole that penetrates through the outer case 1' and allows the liquid level in the liquid level display tube 12' to be visually observed. The top of the inner container 2' is passed through the bottom of the inner container 2' from above the central opening of the shoulder member 5', and is inserted into the notch 14' of the flange portion 24' of the shoulder member 5'.
Since the connecting pipe 9' at the lower end was inserted and the flange part 10' of the inner container 2' was brought into contact with the upper surface of the flange part 24' of the shoulder member 5', the inner diameter of the flange part 24' of the shoulder member 5' was The outer diameter of the flange portion 24' is slightly larger than the outer diameter of the body of the inner container 2'.
The outer diameter of the inner container 2' is made slightly larger than the outer diameter of the shoulder member 5' so that the inner container 2' can be smoothly inserted into the central opening of the shoulder member 5'. Furthermore, when storing the inner container 2' in which the liquid level indicator tube 12' is assembled in the cylindrical outer case 1', the liquid level indicator tube 12' that protrudes from the front wall of the inner container 2' is attached to the outer case. Since the center of the inner container 2' was shifted rearward from the center of the outer case 1' only at the abutting part, the flange 10' of the inner container on the upper surface of the flange 24' of the shoulder member 5' would not move rearward. As a result, a slight gap is created between the flange 10' of the inner container 2' and the notch 14' of the flange 24' on the front side of the shoulder member 5', resulting in a risk of water leakage and the accompanying electric leakage. It was hot.

Also, when the inner container 2' and the bottom body 4' are screwed together via the angle 17', the inner container 2' will rotate in the tightening direction when the screws are screwed, and the screws will not be screwed in smoothly. In addition, there is a drawback that the through hole of the frame 20' and the liquid level display tube 12' are misaligned, making it impossible to see them visually.

The present invention was developed in view of the above-mentioned drawbacks, and it ensures the positioning of the liquid level display device and the rotation prevention of the inner container, completely prevents water leakage and accompanying electrical leakage, and provides a highly safe electrical system. The purpose is to provide pots.

Hereinafter, embodiments of the present invention will be described based on the drawings.

An electric pot A for boiling water and keeping it warm has an inner container 2 surrounded by an outer case 1, a liquid level display device B interposed between the inner container and the outer case, and displaying the amount of liquid in the inner container. A heat source 3 fixed to the outer wall at the lower end of the inner container to heat the liquid in the inner container, a temperature controller C to control the heat source by sensing the temperature of the liquid in the inner container, a bottom body 4 attached to the lower end of the outer case, and an outer case. It is composed of a shoulder member 5 attached to the upper end of the case, an inner stopper 6 detachably attached to the central opening of the shoulder member, and an upper lid 8 that is attached to the upper end of the shoulder member so as to be openable and closable and has a built-in bellows pump 7. There is.

The inner container 2 is formed into a bottomed cylinder made of a heat-resistant metal material such as aluminum or stainless steel, and communicates with a liquid volume display tube 12 of a liquid volume display device B, which will be described later, at both upper and lower ends of the front side wall. Hollow connecting pipes 9, 9 are provided, and an annular flange 10 bent outward is provided at the upper peripheral end forming the upper center opening, and a heat-resistant annular packing 11 is stretched on the lower surface of the annular flange. ing.

The liquid level display device B includes a liquid level display tube 12 installed between the inner container and the outer case to display the amount of liquid in the inner container, and hollow joints 15, 15.

The liquid quantity display tube 12 is formed of a vertically long transparent pipe made of glass, acrylic resin, or the like.

One end of the joint 15 is inserted into the outer periphery of the liquid quantity display tube 12, and the other end is inserted into the outer periphery of the connecting tube 9.

A clear plate may be provided on the back side of the liquid volume display tube 12 to clearly indicate the liquid level of the liquid volume display tube.

The outer case 1 is formed into a cylindrical shape surrounding the body of the inner container, and has a bottom body 4 attached to its lower end, a shoulder member 5 attached to its upper end, and a plug receiver 1 attached to its rear lower end.
9 is fixed, a vertically long through hole is bored in the front side of the exterior case corresponding to the liquid level display tube 12 of the liquid level display device B, and a frame body 20 that covers this vertically long through hole is provided in front of this vertically long through hole. is fixed.

This frame body 20 is provided with a vertically long transparent window 21 through which the vertically long liquid level display tube 12 can be seen through the vertically long transparent hole of the exterior case 1, and a water boiler is provided inside the lower end of the window 21.
It is equipped with heat-retaining lamps 22 and 23, and a transparent glass or resin plate is fitted into the transparent window 21.

The shoulder member 5 attached to the upper end of the outer case has an open center, fixes the annular flange 10 of the inner container 2 to its circumferential surface, and has an annular flange 24 on which the inner plug 6 can be detachably attached. A beak portion 26 on which the discharge pipe 25 of the inner stopper is placed is provided on the front surface, and a hinge device 27 is provided on the outer wall at the rear end for attaching the top cover so as to be openable and closable.

As shown in FIG. 2, this flange portion 24 has one rib 13 projecting downward from the lower end of the front surface, and a U-shaped notch 14 at the rear part away from the rib 13.
is installed. The flange portion 24 has an inner diameter slightly larger than the outer diameter of the body of the inner container 2 so that the body of the inner container 2 can be inserted smoothly, and an outer diameter that allows the flange 10 of the inner container 2 to be inserted smoothly. The outer diameter of the flange 10 of the inner container 2 is slightly larger than the outer diameter of the flange 10 of the inner container 2.

The shoulder member of this rib 13 comes into contact with the connecting pipe 9 of the inner container 2 inserted from above, thereby positioning the connecting pipe and preventing rotation of the inner container caused by tightening the screw 16 of the bottom body 4, which will be described later. ing.

Reference numeral 28 denotes locking claws for locking the locking claws 30 of the locking device 29 of the upper lid 8 provided on both sides of the center of the beak.

The inner plug 6, which is detachably attached to the opening of the inner container 2, is fixed to the inner plug body 31 and the outer periphery of the inner plug body, and has a cover plate 32 that closes the opening of the inner container, and a lower end hanging down inside the inner container and an upper end. A water lift pipe 34 communicates with the liquid communication portion 33 of the inner stopper body, and a tip thereof protrudes from the beak 26 of the shoulder member to the front of the outer case 1, and a rear end communicates with the water rise pipe 34 through the liquid communication portion 33 of the inner stopper body. A discharge pipe 25 is provided.

The upper lid 8, which is attached to the upper end of the shoulder member 5 so as to be openable and closable, is fixed to the rear end of the shoulder member, and includes a bellows pump 7 that opens at the center of the upper and lower ends, a lower plate 36 to which the center of the lower end of the bellows is attached via a packing 35. A top lid locking device 29 includes a hinge device 27 for opening and closing the top lid, and a locking pawl 30 that locks into a locking pawl on a shoulder member.
, an upper plate 37, a push valve 38 locked to the opening at the center of the upper end of the bellows pump, and a spring 39 pushing up the push valve from inside the bellows pump.
and a pusher body 40 which is freely movable up and down in the central opening of the upper plate and which comes into contact with the upper end of the push valve to supply air in the bellows pump into the inner container through the inner plug, and which stops the pusher body from freely moving up and down. A stopper device 41 is provided.

A heat source 3 that heats the liquid in the inner container is fixed to the outer periphery of the lower end of the inner container, and power is supplied by a thermostat 45 that senses the temperature of the liquid in the inner container and a temperature controller C of a thermal reed switch 46. controlled.

This heat source 3 lights up a lamp 22 for boiling water when boiling water, and lights a lamp 23 for keeping it warm when keeping it warm.

The bottom body 4 includes a bottom cover 43 with a central opening that covers the lower part of the container, and a flat plate 44 that closes the central opening of the bottom cover.
It is equipped with

A plug receiver 19 is held on the back side of the bottom cover 43.

The flat plate 44 is fixed to the bottom wall of the container via an angle 17 with screws 16, and by tightening the screws 16, the container is pushed down and the outer case 1 is simultaneously pushed down.
The shoulder member 5 at the upper end and the bottom cover 43 at the lower end are fixed to the outer case, and the flange 10 of the inner container is in close contact with the flange 24 of the shoulder member.

The plug receiver 19 is connected via lead wires to the water boiler, the heat-retaining lamps 22 and 23, and the temperature fuse 4.
2. Connected to the thermal reed switch 46, thermostat 45, and heat source 3.

As described above, in the present invention, a flange is provided at the upper end of the inner container, connecting pipes are provided at the upper and lower ends of the front wall, and a flange is provided at the peripheral wall that forms the central opening of the shoulder member. Since a rib is provided protruding from the front lower end of the part and a notch is made apart from the rib, there is a risk of water leakage between the flange part of the shoulder member and the collar part of the inner container, and the risk of electrical leakage caused by this. It is completely safe.

That is, when the inner container is inserted from above the shoulder member and screwed from the bottom, the flange of the inner container is pressed against the rear wall of the shoulder member by tightening the screws, but the liquid level display device and the notch of the shoulder member are If both are located on the front wall, a gap will be created between the flange of the inner container and the notch of the flange, causing water leakage and the resulting electric leakage. Since the notch is located away from the liquid level display device,
This notch is completely covered by the flange of the inner container.

In addition, since a rib is provided at the lower front end of the flange, the connection can be made simply by rotating the inner container that has passed through the notch in the flange, placing the connecting tube of the inner container in the front, and screwing it in from the bottom. Since the tube comes into contact with the rib, the liquid level display device can be positioned and the inner container can be reliably prevented from rotating.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing an embodiment of the present invention, Fig. 2 is an exploded perspective view showing the main parts of the invention, Fig. 3 is a longitudinal sectional view showing a conventional electric pot, and Fig. 4 is a longitudinal sectional view showing a conventional electric pot. FIG. 3 is a perspective view showing a state in which the inner container is inserted into the shoulder member of the pot. A...Electric pot, B...Liquid level display device, 1,
1'...Outer case, 2, 2'...Inner container, 3,
3'... Heat source, 4, 4'... Bottom body, 5, 5'... Shoulder member, 6, 6'... Inner plug, 7, 7'... Bellows pump, 8, 8'... Top lid, 9,9'...Connecting pipe, 1
0, 10'... Flange, 12, 12'... Liquid level display tube, 13... Rib, 14, 14'... Notch, 1
5...joint, 16...screw, 17,17'
...Angle, 19...Plug receiver, 20,2
0'...Frame body, 24, 24'...Flange part, 25
...discharge pipe, 26 ... beak, 34 ... pumping pipe, 3
8... Push valve, 39... Spring, 40...
... Push body, 42 ... Temperature fuse, 43 ... Bottom cover, 44 ... Flat plate, 45 ... Thermostat, 4
6...Thermal reed switch.

Claims (1)

[Scope of utility model registration request] A bottomed cylindrical inner container 2 surrounded by an outer case 1 and provided with an outwardly protruding flange 10 at the upper end, a heat source 3 for heating and keeping the liquid in the inner container 2 warm, and an upper end of the outer case 1. A flange portion 24 that protrudes inwardly and locks the flange portion 10 of the inner container 2 in the central opening.
and a liquid level display device B that is interposed between the outer case 1 and the front surface of the inner container 2 and is provided with a liquid level display tube 12 that displays the amount of liquid in the inner container 2. In the electric pot A, a connecting pipe 9 is provided at the upper and lower end of the front wall of the inner container 2 to communicate the interior of the liquid level display tube 12 and the interior of the inner container 2, and the front surface of the flange portion 24 of the shoulder member 5 is provided. A rib 13 for locking the connecting pipe is provided protruding from the lower end, and a notch 14 through which the connecting pipe 9 can be inserted from above is bored at the rear of the flange part 24 away from the rib 13 position. Insert the inner container 2 from above and insert the inner container 2 into the notch 14.
An electric pot characterized in that, after penetrating through the connecting tube 9 , the liquid quantity indicating tube 12 engaged with the connecting tube 9 is positioned by a rib 13 via the connecting tube 9 .