JP2595379Y2 - Electric pot seal packing - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric pot seal packing capable of heating and supplying a liquid contained in an inner container, and more particularly to an electric pot seal packing provided with a seal packing for preventing air leakage in the inner container. About.

[0002]

2. Description of the Related Art As a conventional seal packing of an electric pot, there is known a seal packing of an electric pot for sealing so that air does not leak outside. FIGS. 5 and 6 show the seal packing of the electric pot having a slightly different structure, respectively. However, as a similar configuration, the opening of the shoulder 53 formed on the upper part of the outer body 52 has the same shape as that of the shoulder 53 housed in the outer body 52. The opening of the inner container 54 is connected to the opening, and an inner lid 56 is attached to a lid 55 covering the opening. Seal packings 51 and 61 are provided on the inner lid 56 so as to abut on the mouth of the inner container 54 to seal between the inner container 56 and the inner container 54. In the seal packing of these electric pots, compressed air sent from the bellows pump 57 is supplied to the valve spring 5.
The pressure is applied to the air in the inner container 54 by sending it to the inner container 54 via 8. At this time, the seal packings 51 and 61 are sealed so that the air in the inner container 54 does not leak outside.

The ends of the seal packings 51 and 61 are configured to press against the mouth of the inner container 54 using the air pressure of the inner container 54. Seal packing 51, 6
As described above, 1 prevents air from escaping from between the inner container 54 and the inner lid 56, and has a cross section of "T" shown in FIG. 5 or a cross section of "U" shown in FIG. Is formed. These seal packings 51 and 61 use the elastic force of the tips to prevent air from escaping by contact between the seal packings 51 and 61 and the upper surface of the shoulder 53. (See, for example, Japanese Utility Model Laid-Open No. 54-47967 and Japanese Utility Model Laid-Open No. 55-143127)

[0004]

However, in the seal packing of these electric pots, the liquid in the inner container 54 is heated and the internal pressure rises due to generation of steam, and the inner lid 56 is pushed up even a little. If so, the seal packings 51 and 61 are easily pushed away from the mouth of the inner container 54, and there is a problem that steam leaks out of the inner container 54.

Further, when the seal packings 51 and 61 are deformed, steam leaks from the deformed portions and the air pressure of the bellows pump 57 is not applied to the inner container 54, so that the efficiency of pouring hot water is reduced. Furthermore, when the temperature of the hot water is low, the pressure in the inner container 54 decreases, and the tips of the seal packings 51 and 61 do not sufficiently press against the mouth of the inner container 54, thereby lowering the hot water discharging efficiency. is there.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a seal packing for an electric pot, which can reliably seal the inner container and the inner lid, and can reliably seal even when the liquid in the inner container is in a low temperature state. Is the subject.

[0007]

According to the present invention, there is provided an electric pot in which the inner lid provided on the lid is capable of opening and closing the mouth of the inner receptacle housed inside the outer casing. A seal packing that seals between a flange formed at a mouth and a peripheral end of the inner lid, the seal packing includes a holding part held at the peripheral end of the inner lid,
A resilient bent portion having one end in the holding portion extends to the flange side of the connected and the inner container, the inner container of the
Connected to the other end of the elastic bend so that it can be adsorbed to the flange
Having a suction portion, which is displaced from the center of the suction portion.
That the other end of the elastic bend is connected to the
The seal packing of the electric pot is obtained.

[0008]

According to the structure of the present invention, the seal packing has the suction portion adsorbed on the flange portion of the inner container, and even if the inner lid is moved up and down by the internal pressure, there is no significant change in the mutual interval. The gap formed between the seal packing and the inner container always keeps the initial state.

Also, even if the seal packing is deformed due to the internal pressure in the inner container, air does not leak from the deformed portion.

Further, although the pressure in the inner container is reduced when the temperature of the hot water is low, a sufficient sealing property can be maintained since the suction portion of the seal packing is adsorbed on the flange portion of the inner container.

[0011]

1 and 2 show a first embodiment of the seal packing of an electric pot according to the present invention. 1 and 2
Referring to, the seal packing of the electric pot of the first embodiment seals the mouth 9a of the inner container 3 housed inside the exterior body 1 with the inner lid 9 provided on the lid body 2. is there. The seal packing 8 has a holding portion 11, an elastic bending portion 12 having one end connected to the holding portion 11, and a suction portion 13 connected to the other end of the elastic bending portion 12.

More specifically, the electric pot comprises an exterior body 1 having an opening at an upper part, and a lid 2 facing the opening of the exterior body 1 and capable of opening and closing the opening.
And the upper end is housed in the exterior body 1 and the upper edge is
5 and an inner container 3 connected thereto. The exterior body 1 has an annular flat surface 5 on the inner wall of the opening edge 45. The lid 3 has a contact portion 7 which approaches the annular flat surface 5 when the opening of the exterior body 1 is closed. A seal packing 8 is interposed between the annular flat surface 5 and the contact portion 7 in the lid 2.
The seal packing 8 is attached to an inner lid 9 held by the lid 2.

The exterior body 1 has an annular shoulder 4 at an opening edge 45. The mouth of the inner container 3 is provided with an annular flange 6 mounted on the annular flat surface 5 of the shoulder 4. The flange portion 6 can be formed at the same time as forming the inner container 3 by processing a metal plate by pressing or the like. The cover 2 has a contact portion 7 that approaches the flange portion 6 when the opening of the exterior body 1 is closed. The lid 2 has a contact portion 7.
There is provided an inner lid 9 holding a seal packing 8 interposed between the flange portion 6 and the flat plate-shaped flange portion 6 at a peripheral end portion 10.

The seal packing 8 has a substantially cylindrical shape as a whole, and has a holding portion 11 having one end held at a peripheral portion 10 of the inner lid 9.
And an elastic bent portion 12 having one end connected to the holding portion 11 and extending to the flange portion 6 side, and a suction portion 13 connected to the other end of the elastic bent portion 12 so as to be able to be sucked to the flange portion 6. . The elastic bending portion 12 has an intermediate portion protruding in the central axis direction of the inner container 3 so as to be easily bent. Also,
The suction section 13 has an inverted concave cross section so that it can be suctioned on the upper surface of the flange section 6.

The bottom of the inner container 3 is fixed by a bottomed case 21. The inner container 3 is provided with a heating element 22 such as a heater at the bottom. Between the bottom and the bottomed case 21, there are provided a control device for controlling the heating element 22 based on a detection signal of a thermistor 23 for temperature detection, and electric components such as a power supply connection.

Lid 2 pivotally supported by shoulder 4
Has a lock lever 27 which engages with the shoulder portion 4 while having a pump device 25 therein. Pump device 25
Has a bellows pump 29 that is compressed via a pressing plate 28 exposed on the upper surface of the lid 2. The bellows pump 29 sends the air in the bellows pump 29 into the inner container 3 from the discharge port 30 through the air supply path of the plug 31 provided on the inner lid 9 when the pressing plate 28 is pressed down. The liquid discharge route is
A discharge conduit 33 having a lower end opening near the inner bottom of the inner container 3;
To the front surface of the exterior body 1 along the shoulder 4 and
And a discharge passage 36 that connects the discharge pipe 33 and the discharge pipe 35 to each other.

Now, when the lock lever 27 is pushed to release the engagement with the shoulder portion 4, the lid 2 can be rotated to open the mouth of the inner container 3, and the inner lid 9 is moved together with the pouring path. After being removed, water or the like can be injected into the inner container 3. Next, the inner cover 9 is put on the inner container 3, and further, the lid 2 is closed and locked on the upper surface, and the contact portion 7 of the lid 2 presses the inner lid, and the inner lid 9 is firmly placed on the inner container 3. Cover and secure. When the heating element is energized, the liquid in the inner container 3 is heated to a predetermined temperature, and the temperature of the liquid is maintained at the predetermined temperature by the operation of the control device.

When the seal packing 8 of the inner lid 9 is pressed against the flange 6 of the inner container 3 by the lid 2, the elastic bending portion 12 is formed on the upper surface of the flange 6 of the inner container 3 as shown in FIG. When strongly pressed and greatly bent, the suction portion 13 is suctioned to the flange portion 6. Further, in a state where the lid 2 is closed and locked on the upper surface of the flange portion 6, sealing is performed in a state where the lid 2 is slightly pushed up by the rebound of the elastic bending portion 12 (the state of FIG. 2). The elastic bending portion 12 is
While the entire body is deformed in response to the pressing of the inner lid 9 by the above, the state in which the suction portion 13 is suctioned to the upper surface of the flange portion 6 is maintained. At this time, the internal pressure due to the generation of steam or the like in the inner container 3 acts in a direction in which the suction portion 13 is pressed against the upper surface of the flange portion 6. Ensure protection is achieved.

Further, since the suction portion 13 is sucked on the upper surface of the flange portion 6, the suction portion 13 floats or the contact pressure with the upper surface of the flange portion 6 becomes weak, so that the sealing effect and the protection effect against the seal packing 8 are obtained. Is not reduced.

As shown in FIG. 4, the other end of the elastic bent portion 12 of the seal packing 8 is connected to a portion where the other end of the elastic bent portion 12 is shifted from the center of the suction portion 13. When the lid 2 is opened and the mouth of the inner container 3 is opened, the operation of releasing the suction state of the suction unit 13 is not burdened and can be achieved with a small force. That is, when the lid 2 is rotated to open the mouth of the inner container 3, the force to release the suction state can be performed with a small force in the operation of the elastic bending portion 12 extending and pulling up the suction portion 13. .

Further, in order to pour out the liquid from the inner container 3, the air in the bellows pump 29 is sent to the inner container 3 by pressing the pressing plate 28. As a result, the content liquid is pushed up the water stop valve 41 provided in the discharge path and is discharged from the discharge port 34.

[0022]

According to the seal packing of the electric pot of the present invention, the lower end of the seal packing is a suction portion, and the suction portion is sucked by the flange portion of the inner container, so that the liquid in the inner container is heated. Even if the internal pressure rises due to the generation of steam or the like and the inner lid is pushed up even a little, the seal can be reliably sealed by the seal packing.

Further, even if the seal packing is deformed, the suction portion is sucked to the flange portion of the inner container, so that steam does not leak and the efficiency of pouring out hot water does not decrease.

Furthermore, although the pressure in the inner container is reduced when the temperature of the hot water is low, the efficiency of pouring the hot water is reduced because the suction portion of the seal packing is sufficiently suctioned to the flange portion of the inner container. And the sealing performance can be improved.

Further, the seal packing can be simplified and downsized, and the cost of the seal packing can be reduced. Since the other end of the elastic bend is connected to the part positioned from the center of the suction part, the seal packing releases the suction state of the suction part when opening the lid and opening the mouth of the inner container. The operation can be achieved with a small force without burden.

[Brief description of the drawings]

FIG. 1 is a first view of the seal packing of the electric pot of the present invention.
FIG. 2 is a schematic sectional view showing an example of the present invention.

FIG. 2 is a partially enlarged sectional view showing a suction state of the seal packing of FIG. 1;

FIG. 3 is a partially enlarged cross-sectional view showing a state where suction is performed on the seal packing of FIG. 1;

FIG. 4 is a partially enlarged cross-sectional view showing a state where suction of a seal packing of FIG. 1 is released.

FIG. 5 is a partial sectional view showing an example of a conventional seal packing of an electric pot.

FIG. 6 is a partial cross-sectional view showing another example of the seal packing of the conventional electric pot.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1,52 Exterior body 2 Lid body 3,54 Inner container 4,53 Shoulder part 5 Annular flat surface 6 Flange part (peripheral end) 7 Contact part 8,51,61 Seal packing 9,56 Inner lid 9a Mouth part 11 Holding part 12 Elastic bending part 13 Suction part 22 Heating body 27 Lock lever 29 Bellows pump

Claims (2)

(57) [Scope of request for utility model registration] 1. An electric pot in which a mouth of an inner container housed in an exterior body can be opened and closed by an inner lid provided on the lid body, wherein a flange formed at the mouth of the inner container is connected to the inner pot by the inner lid. has a seal packing to seal between the peripheral edge portion of the lid, the seal packing, a holding portion which holds to the peripheral edge of the inner lid, one end of the holding portion is connected and <br/> An elastic bending portion extending to the flange portion side of the inner container;
A suction portion connected to the other end of the bent portion;
The other end of the elastic bending part is in contact with the part shifted from the center.
Seal packing of an electric pot characterized by being continued . 2. An inner container according to claim 1, wherein the intermediate portion of the elastic bending portion is the inner container.
It is formed to protrude in the direction of the central axis of
The seal packing for an electric pot according to claim 1.