JPH0117685B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] This invention relates to an electric pot used for boiling water.

[Technical background of the invention and its problems]

This type of electric pot has a water boiling tank equipped with a heater housed in a cylindrical case, and a transparent wall on the side of the tank that communicates with the inside of the tank and displays the level of hot water in the tank. A communication pipe is provided, and a display window is cut out on the side of the case facing the communication pipe, and the amount of hot water in the tank can be determined by visually observing the communication pipe from outside the case through this display window. It's becoming like that. Furthermore, a mounting opening is formed on the side of the case, and a plug receiver that conducts electricity to the tank heater is attached to this mounting opening, and a power plug is connected to this plug receiver to energize the heater. It is becoming possible to do this.

In this way, the display window and the mounting port are cut out on the side of the case, but if both the display window and the mounting port are arranged on the same line in the longitudinal direction of the side of the case. There is a problem in that the percentage of the defective area in the line portion increases, the strength decreases, and there is a risk of causing unexpected deformation during or after assembly.

[Purpose of the invention]

This invention was made with attention to these points, and its purpose is to reliably suppress the decrease in strength of the case due to the formation of notches in the display window and mounting opening, and to prevent accidental deformation of the case. An object of the present invention is to provide an electric pot that can prevent such problems.

[Summary of the invention]

That is, in this invention, a tank is housed in a cylindrical case, a heater is provided on the outer peripheral surface of the lower part of the tank, and a communication pipe for displaying the liquid level position in the tank is installed on the side of the tank, rather than the heater. A display window is cut out in the side surface of the case facing the communication pipe, and a mounting opening is cut out in the side surface of the case at a position offset from the display window in the circumferential direction of the case. A plug holder that is electrically connected to the heater is attached to this attachment opening.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, 1 is the main body of the electric pot, and this is case 2.
A cylindrical tank 3 with a bottom is housed inside.
An inner lid 4 is provided at the upper end of the case 2, and a replenishment port 4a is formed in the inner lid 4, and a stopper 5 is removably fitted into the replenishment port 4a via a packing 5a. The tank 3 is mounted and held on a holding plate 6 installed horizontally on the inner bottom of the case 2, and has an integral flange 9 with an arcuate cross section around the opening at the upper end. Packing 11 in the groove 10 formed around the lower surface of the lid 4
They are airtightly fitted together and supported by the pushing member 12. Further, a flat heater 13 is attached to the outer circumferential surface of the lower part of the tank 3 along the circumferential direction thereof, and bushes 15a, 15b made of rubber or the like are placed on the sides of the tank 3, and are located above and below.
are hermetically fitted, and these bushes 1
A transparent communication tube 15 is vertically connected between 5a and 15b. Bush 15b on the lower end side of tank 3
is arranged above the heater 13, so the communication pipe 15 faces above the heater 13 without facing it.

On the upper surface side of the inner cover 4, an outer cover 16 which is hemispherical and has a recess 16a at the top thereof is rotatably provided via a pin 16b. The outer cover 16 and the inner cover 4 each have a protrusion 1 that protrudes laterally.
7 and 18 are integrally formed, overlap each other, and are locked via an externally operable hook 19. A supply passage 20 is formed on the upper surface of one of the protrusions 18 , a conduit 21 is connected to the base end of the supply passage 20 , and the lower end of this conduit 21 faces the inner bottom of the tank 3 . Further, the distal end side of the supply path 20 is open to the outside via the supply port 22.

An air pump mechanism 23 is incorporated inside the outer lid 16. That is, a board 24 is provided horizontally on the lower surface of the outer lid 16, and a bellows 25 is attached to the upper surface of this board 24. This bellows 25
has a movable plate 26 at its upper end, and this movable plate 26 is urged upward by a spring 27 disposed inside the bellows 25. Recess 16 in outer lid 16
A pusher body 28 is loosely fitted in the interior of the recess 16a, and interlocking pieces 29, 29 are integrally formed on both sides of the pusher body 28. Through holes 31, 31 formed in
It faces the peripheral portion of the movable plate 26 through the movable plate 26 . An introduction hole 32 is formed in the center of the movable plate 26, and an annular packing 33 is fitted to the inner peripheral edge of the introduction hole 32. A cylinder 34 is slidably inserted into the bottom plate 30 of the recess 16a, one end of which is fixed to the inner surface of the pusher 28 via a screw 35, and the other end has an abutment plate 36. This contact plate 36 faces the introduction hole 32 . A spring 37 having a smaller spring coefficient than the above-described spring 27 disposed inside the bellows 25 is provided between the abutting plate 36 and the movable plate 26.
The pushing body 28 is urged upward together with the abutting plate 36 by the elastic force of , and a small gap 38 is secured between the abutting plate 36 and the introduction hole 32.

An annular projecting wall 40 is integrally provided on the upper surface of the opening/closing stopper 5. A packing 41 is attached to the projecting wall 40, and the base plate 2 of the outer lid 16 is attached to the packing 41.
4 are in contact with each other in an airtight manner so as to be able to freely approach and separate. On the inner side of the projecting wall 40, through holes 42 and 43 are formed in the base plate 24 and the stopcock 5, respectively.

A vertically elongated display window 44 facing the communication pipe 15 is cut out in the side surface of the case 2 in substantially the upper half thereof. A window cover 45 is attached to the outer surface of the case 2 so as to protrude outward and cover the display window 44, and a vertically elongated opening 46 facing the display window 44 is formed in the window cover 45. A measuring scale is provided on the side edge of 46. Furthermore, a pair of light projecting parts 47 and 48 are formed at the lower end of the window cover 45, and a light projecting glass 47 is formed in each of these light projecting parts 47 and 48.
a, 48a are attached. An energization indicator lamp 49 and a heat retention indicator lamp 50 are disposed inside these light projectors 47 and 48 to face them. A clearing piece 51 is provided on the outside of the tank 3 and on the back side of the communication pipe 15. This clear piece 5
As shown in FIG. 3, 1 is formed by printing or the like so that dashed lines 52 of bright colors running in the horizontal direction are arranged in countless rows with an interval of about 1 mm from each other.

Furthermore, a mounting opening 53 is provided on the side surface of the case 2 at a position at the lower end thereof and at a position shifted in the circumferential direction of the case 2 from the longitudinal direction line of the part where the display window 44 is arranged, for example, at a position on the opposite side of the display window 44. is formed with a notch. A plug receiver 54 that is electrically connected to the heater 13 via the thermostat 13a is attached to the mounting port 53, and by connecting a power plug p to the plug receiver 54, the heater 13 can be energized. It's becoming like that.

Next, the effect will be explained.

The liquid L in the tank 3 is heated by the heater 13 to become hot water, and its temperature is kept constant by intermittent energization by the thermostat 13a. When the pushing body 28 is pressed downward in this state, the abutting plate 36 first contacts the packing 33 and the introduction hole 32 is hermetically closed, and the movable plate 26 is further pressed downward, causing the bellows 25 to close. is compressed together with the air inside it, and the compressed air enters the through hole 4.
2, 43 and is discharged into the tank 3. This discharge pressurizes the surface of the hot water, and accordingly, the high temperature hot water is discharged to the outside through the conduit 21, the supply path 20, and the supply port 22. After that, when the pressing of the pushing body 28 is released, the contact plate 36 is separated from the packing 33 together with the pushing body 28 due to the elastic force of the spring 37, and external air flows into the bellows 25 from the gap 38 through the introduction hole 32. Accordingly, the bellows 25 returns to its original position due to the elastic force of the spring 27.

Since the inside of the tank 3 communicates with the inside of the communication pipe 15 through the bushes 15a and 15b, a liquid level at the same level as the liquid level inside the tank 3 is formed in the communication pipe 15, and therefore this liquid level is The amount of hot water in the tank 3 can be known by visually observing it through the display window 44 from the opening 46 of the window cover 45 on the outside of the tank 2 . Here, since countless broken line-shaped filaments 52 are arranged on the back side of the communication pipe 15,
When these filaments 52 are visually observed through the communicating tube 15, as shown in FIG. 52... appear as thick continuous lines, and therefore a boundary appears in the middle of the pattern of the marking piece 51, and the position of this boundary corresponds to the liquid level position of the hot water. The liquid level of hot water can be easily and clearly grasped based on the boundary, and the amount of hot water in the tank 3 can be accurately known. Further, due to the arrangement of the clearing piece 51, the peripheral surface of the tank 3 on the back side of the communication pipe 15 is covered and hidden, so that the surrounding surface does not come into view, and therefore the clearing piece 51 is used for decoration. It is also effective in some respects. The lower end of the communication pipe 15 is located above the heater 13 and does not face the heater 13, so it is not directly exposed to the radiant heat of the heater 13, and for this reason, when dry baking is performed. Even in this case, the communication pipe 15 does not become very hot. When water is poured into the tank 3 from an empty state, the water collects at the inner bottom of the tank 3, and during this time the temperature rises due to the heat from the heater 13, and as the water level rises, some of the water portion flows into the lower end portion of the communication pipe 15. However, the communication pipe 15
As mentioned above, the temperature of the water flowing into the communication pipe 15 is not so high, and the temperature of the water flowing into the communication pipe 15 has also increased, so the temperature difference between the two is small, and therefore the thermal contraction of the communication pipe 15 is small. As a result, damage to the communication pipe 15 is reliably prevented. Further, since the marking piece 51 disposed on the back side of the communicating tube 15 is not directly exposed to the radiant heat of the heater 13 like the communicating pipe 15, the marking piece 51 is not directly exposed to the radiant heat of the heater 13. Early discoloration and deterioration is also prevented.

By the way, there are two missing parts on the side surface of the case 2, the display window 44 and the mounting port 53, but the display window 44 and the mounting port 53 are arranged on different longitudinal lines on the side surface of the case 2. Therefore, the range of defects on each of the above lines is small,
Therefore, a decrease in the strength of the case 2 can be reliably suppressed, and careless deformation of the case 2 can be prevented.

〔Effect of the invention〕

As explained above, according to the present invention, since the display window and the mounting opening are mutually shifted in the circumferential direction of the case to form a notch, it is possible to reliably prevent a decrease in the strength of the case due to the formation of the notch in the display window and the mounting opening. In addition, since the communication pipe that displays the liquid level position in the tank is installed above the heater, it has a simple structure and prevents the communication pipe from being deformed due to the radiant heat of the heater. This has the effect of preventing thermal damage.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a cross-sectional view of the entire structure, Fig. 2 is a front view, Fig. 3 is a front view of a clearing piece, and Fig. 4 is an explanation explaining the function of the clearing piece. It is a diagram. 2... Case, 3... Tank, 13... Heater, 15... Communication pipe, 44... Display window, 53...
Mounting port, 54...Plug receiver.

Claims (1)

[Claims] 1 A tank is housed in a cylindrical case, a heater is provided on the outer peripheral surface of the lower part of the tank, and a communication pipe that displays the liquid level position in the tank is placed on the side of the tank at a position above the heater. A display window is cut out in the side surface of the case facing the communication pipe, and a mounting port is cut out in the side surface of the case at a position offset from the display window in the circumferential direction of the case. An electric pot characterized by being equipped with a plug receiver that conducts electricity to the heater.