JPS6010502Y2 - Cooking device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to home cooking appliances such as rice cookers and electronic jars, and is particularly intended to improve the lid opening/closing devices of these appliances.

Conventionally, the common configuration of many of the above appliances is that a pot with an open top is inserted into the appliance body with a built-in heating element, and an outer lid that covers this opening is pivoted at one end to the body and operated from the top. It is equipped with a handle and has a hook lever on the other end to be engaged with the main body for opening and closing.

Furthermore, in order to improve the cooking and heat retention characteristics of the utensil, many of the utensils are provided with a detachable inner cover that covers the opening flange of the pot below the outer cover.

In the above configuration, when the handle of the outer lid is grasped and the hook lever is removed to open the lid, a sudden negative pressure phenomenon is generated in the space inside the pot due to the pot and the inner cover tightly covering it, and the lid is opened at the same time. There was a drawback that the inner cover could come off from the attachment part with the outer cover.

Naturally, the above-mentioned tendency is more likely to occur when the opening operation of the lid is rapid and when the space inside the pot is large, especially when there are large appliances or there are few items to be stored and the space is large.

Increasing the engagement force between the inner lid and the outer lid may be one of the above measures, but if it is too strong, it will be difficult to attach and detach the lid during cleaning, which is undesirable.

In recent years, in order to further improve the characteristics of the appliance, some appliances have been equipped with flexible backings at the contact area between the inner lid and the pot in order to cook under pressure and prevent heat radiation. The above-mentioned negative pressure phenomenon was remarkable, and effective countermeasures were required.

The present invention improves the above-mentioned conventional drawbacks by providing a device for releasing the negative pressure in conjunction with the lid opening operation in the retaining portion of the inner lid and the outer lid.

The present invention will be explained below based on the drawings showing an example of implementing the present invention in a jar rice cooker.

In the figure, 1 is the main body of the instrument, with a cylindrical outer shell 2, an outer pot 3,
It consists of a heat insulating material 4 interposed between the two, a heating element 5 attached to the outer pot 3, and a heat-sensitive control component 6.

Reference numeral 7 denotes a pot serving as a rice cooking container, which is detachably provided on the heating element 5 mentioned above.

On the other hand, the outer lid 8 and the handle 9 are integrally molded, and a heat dissipation plate 12 with a heat-retaining heater 11 is attached to the lower surface via a lid insulating material 10.

Further, the outer cover 8 is pivotally supported on the main body 1 by a shaft 13, and engaged with the main body by a hook lever 14 on the other side.

Reference numeral 15 is an inner lid made of an aluminum plate, and has a backing 16 on the outer periphery for tightly covering the pot 7, and a weight-type valve 17 for cooking rice at a constant pressure.

Furthermore, the inner lid 15 has a bushing 18 made of tameno silicone rubber in the center to be attached to the lid side and to generate a downward biasing force when closed, and is configured to be detachable from the bottle 19 screwed onto the heat dissipation plate 12. are doing.

Next, the attachment/detachment portion of the inner lid 15, which is the main part of the present invention, will be explained based on FIG. 2 and FIGS. 3a and 3b.

The bushing 18 is locked to the inner cover 15 by a lower bushing flange 21 inserted through a hole in the center of the inner cover.
A gap of size A is provided in the vertical direction.

The inner cover 15 is provided with a plurality of ventilation holes 22 in the diameter of the seat of the bushing 18 which is in surface contact with the inner cover 15 and is located outside the bushing flange 21 around the central through hole. It is being

FIG. 2 shows the state in which the outer M8 is closed, and the upper end of the cup-shaped portion of the bushing 18 comes into contact with the lower surface of the heat dissipation plate 12 and extends downward, that is, the inner cover 15 is pushed downward. Pot 7
Since the opening of the inner lid 15 is pressed against the opening of the inner lid 15, the ventilation hole 22 of the inner lid 15 is closed by the seat of the bush 18, and in this state, rice is cooked and kept warm.

Now, when the handle 9 is lifted to open the outer lid 8, the bottle 19 moves upward and the locking part 20 at the bottom end of the bottle lifts the bush 18, as shown in FIG.

That is, the gap A that was below the inner lid 15 when it was closed.
moves to the gap A above the inner lid 15, and automatically creates a state in which the inside and outside of the pot 7 are communicated through the ventilation hole 22 shown in FIG.

As is clear from the above explanation, when the outer cover 8 is opened, the inner cover 1
The movement of the bushing 18 breaks the airtight condition inside the pot 7 before the bushing 18 is lifted, so the negative pressure phenomenon that occurs due to the movement of the inner lid 15 is greatly alleviated, and as a result, the bushing 1
Even if the holding force between the inner diameter of the pin 8 and the locking part 20 at the lower end of the pin is weak, the inner cover 15 can be prevented from coming off due to the thinning of the outer cover 8.

In the example, the inner lid is provided with a backing 16 and a valve 17, but even if these are not provided, the outer periphery of the inner lid and the step of the pot are sealed to prevent steam from leaking, and the inner lid does not leak after cooking. Since stickiness and moisture are involved, it has almost the same effect.

Since the present invention is constructed as described above, it utilizes the pins and bushings conventionally required to integrally operate the inner lid, and eliminates the need for any new parts or complication of the configuration, and eliminates the conventional drawbacks. It is possible to prevent the inner lid from detaching due to negative pressure when the lid is opened.

In addition, since the force for opening the lid acts directly through the pin, the operation is reliable even when there is mucus during cooking, and this has a great practical effect.

[Brief explanation of the drawing]

Figure 1 is a sectional view of a jar rice cooker showing an embodiment of the present invention, Figure 2 is a sectional view of the same main part, Figure 3a is a sectional view of the main part when the lid is opened, and Figure 3. is a back view of the same main part when the lid is open. 1... Appliance body, 7... Pot, 8...
...Outer lid, 15...Inner lid, 18...
Bush, 19... bottle, 22... ventilation hole.

Claims (1)

[Scope of utility model registration request] A pot attached to the main body, an inner lid that covers the opening of the pot,
In the cooking device, the outer lid is located on the inner lid and has a pin on the lower side for engaging with the inner lid. A bushing having a mating relationship is provided, and this bushing also has a gap that moves up and down with respect to the inner cover, and is fitted into the inner cover, so that when the cover is closed, the upper part of the bushing is connected between the inner cover and the outer cover. It has a biasing force that pushes the inner lid against the tin filling opening, and when the lid is opened, the bushing moves upwards with respect to the inner lid, and this movement causes the vent hole that communicates between the inside and outside of the inner lid to close to the bushing of the inner lid. A cooking utensil characterized in that it is provided in a part that comes into contact with the cooking utensil.