JPH041851Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The invention is an inner lid structure for a rice cooker, in particular, a rice cooker that allows the oneg that is generated inside the rice cooker to be returned to the inside of the rice cooker without boiling over from the rice cooker. The invention relates to a type of inner lid structure.

[Prior art and its problems] Oneba forms in the inner pot of the rice cooker during rice cooking, but
The oneba generated in the inner pot is blown out by lifting the inner lid, and spills out from the inner pot.

Therefore, some conventional rice cookers have an inner lid structure as shown in FIG. 5 in order to prevent the rice from boiling over.

That is, a rubber body 52 is disposed at the center of the lower surface of the outer lid 4, and the inner lid 1 is inserted into the insertion hole 53 formed in the rubber body 52.
The head 23 of the fitting shaft 11 protruding from the upper center surface is forcibly fitted. As a result, the inner lid 1 is removably attached to the lower surface of the outer lid 4.

The upper surface of the inner lid 1 has a slope that becomes deeper from the outer periphery toward the center, and through holes 12, 12 are bored at the deepest part of the slope for the oneba to pass through. Further, a floating lid 2 in the form of an open dish is fitted onto a fitting shaft 11 which is protruded from the center of the inner lid 1 so as to be movable up and down. Windows 21, 21 are cut in the outer peripheral wall of the float lid 2, and the float lid 2 is formed in a size that covers the through holes 12, 12 in the center of the inner lid.

As shown in the figure, when the lid is closed,
The outer periphery of the inner lid 1 is pressed against a stepped portion 31 provided on the inner periphery of the upper end of the inner pot 3, and during rice cooking, water vapor and air bubbles generated in the inner pot 3 are discharged from the through hole 12. Speech bubble, this one is float lid 2
will be lifted and accumulated on the upper surface of the inner lid 1.

When the rice cooking is completed, the oneba that has accumulated on the top surface of the inner lid 1 is cooled down and the air bubbles disappear, and the inner lid 1
Guided by the slope toward the center, the central through hole 1
It flows in the 2 and 12 directions. And this Oneba is
It is returned into the inner pot 3 through the windows 21, 21 of the float lid 2 and the through holes 12, 12 provided around the insertion shaft 11 in the inner lid 1.

As a result, rice produced during rice cooking does not boil over from the inner pot 3.

However, in the above-mentioned conventional method, there was a problem that the rice after cooking was not cooked evenly between the part that had been reduced by Oneba and the other parts.

This is because the rice that has accumulated on the top surface of the inner lid is temporarily concentrated and returned to the inner pot when rice cooking is completed.

In other words, since the rice is not heated after the rice is cooked, if the liquid Oneva is intensively reduced below the through hole 12, which is the reduction port of Oneba, the water will be concentrated and absorbed into some of the cooked rice. Until this naturally diffuses into other cooked rice, the rice in that area will become watery and the rice in this area and other areas will not be cooked evenly.

[Problem] The present invention has a slope that deepens from the outer periphery toward the center on the top surface of the inner lid of a rice cooker, and a through hole is bored in the deepest part of the slope, so that when the lid is closed, the inner lid In the inner lid structure of the rice cooker, in which the inner lid 1 and the inner lid 3 are brought into close contact with each other, the rice left after cooking is
The object of the present invention is to make the rice rice be returned to the inner pot 3 one after another during cooking in order to cook the rice uniformly between the part to which the rice has been returned and the other parts.

[Technical Means] The technical means of the present invention taken to solve the above problem is to provide a window hole formed by partially cutting and raising the surface of the inner cover 1 near the outer periphery of the inner cover 1. ,
This window hole is designed to open inward along the upper surface of the inner lid 1.

[Effect] The above technical means works as follows.

During rice cooking, the bubbles generated in the inner pot 3 are discharged through a window hole formed by partially cutting and raising the outer circumference of the inner lid 1. Then, the bubble-like oneva coming out from the window hole is destroyed when it is discharged from the window hole.

The bubbles are destroyed and the Oneba discharged onto the upper surface of the inner pot 1 is guided by the slope of the inner lid 1, flows toward the through hole provided at the deepest part of the slope, and flows from the through hole into the inner pot 3. will be reduced to

Then, the oneba discharged from the window hole during rice cooking is sequentially returned into the inner pot 3 during rice cooking.

[effect] The present invention has the following unique effects.

The rice that is produced during rice cooking is returned to the inner pot 3 sequentially while the rice continues to be cooked, and is not temporarily concentrated and returned after rice cooking is completed as in the conventional method described above. The rice will not become watery, and after cooking, both the part that has been reduced by Oneba and the other parts of the rice will be cooked evenly.

Destroy the Oneba bubbles that have formed in the inner pot 3,
Japanese Utility Model Publication No. 137420/1983 discloses a method in which the rice is returned to the inner pot 3 one after another during cooking. However, this one destroys Oneva's bubbles,
It is necessary to separately form a Oneva collection chamber or the like to convert this into liquid. In this case, the separately formed structural parts such as the Oneva collection chamber are attached to the inner lid 1, so the structure becomes complicated. On the other hand, in the case of the present invention, since the one-bar is returned by the window hole formed by simply cutting and raising the vicinity of the outer periphery of the inner lid 1, the structure does not require an independent structural part as described above. becomes easier.

[Example] Next, an example of the present invention described above will be described in detail with reference to the drawings.

As shown in FIG. 1, the inner lid 1 used in the embodiment of the present invention has an outer lid 4 similar to the conventional one described above.
It is designed to be removably attached to the center of the bottom surface.

As shown in the figure, this inner lid 1 has a smooth slope 16 from the outer periphery to the center.
A recess 14 having a through hole 13 for Oneva reduction is provided at the deepest part thereof.

On the other hand, there are a plurality of window holes 1 near the outer periphery of the inner lid 1.
5, 15 are arranged, and these window holes 15, 1
5 is formed by partially cutting and raising the surface of the inner lid 1, as shown in FIG. In addition, in the illustrated example, these window holes 15, 15 open toward the through hole 13 for reducing Oneva, but the opening direction of the window holes 15, 15 may be deviated from the through hole 13. You can also face the

The inner cover 1 is attached to the outer cover 4 as described above, and the attachment structure is as described below.

That is, as shown in FIG. 3, the fitting shaft 11 is attached to a recess 14 located at the center of the inner lid 1. A cylindrical body 19 larger than the outer diameter of the cylindrical body 19 is integrally connected to the lower part of the fitting shaft 11, and a plurality of fitting protrusions 18, 18 protruding from the outer periphery of the cylindrical body 19 are provided inside the recess 14. It is configured to forcibly fit into fitting recesses 10, 10 provided on the peripheral wall. Further, the cylindrical body 19 is provided with passage windows 17, 17 for the oneba to pass through.

The fitting shaft 11 and the outer cover 4 are connected by connecting the head 23 of the fitting shaft 11 to the inner cover support 6 disposed in the center of the outer cover 4 via the connecting body 9, as shown in the figure. It is done as if it were installed.

The coupling body 9 is a cylindrical body made of elastic synthetic resin, and has an engagement flange 91 on the outer periphery of its head, and a fitting hole 92 in the center of the other end.

The inner lid support 6 is made of synthetic resin and has a structure as shown in FIG. 4. That is, the inner lid support 6 has a cylindrical shape as a whole, and the outer peripheral wall thereof has fitting protrusions 61, 6 for attaching it to the outer lid 4.
1 is arranged. Inside the inner lid support 6, a horizontal wall 62 is provided with steam vent holes 63, 63 and a central hole 69 in the center.
An engaging flange 64 is provided around the lower part of the holder. Further, engagement protrusions 65, 65 are provided on the inner circumference of the upper end of the inner lid support 6.
A pressure regulating weight 7 for regulating the pressure inside the inner lid 3 is forcibly fitted into the lower part thereof.

In order to attach the inner lid support 6 to the outer lid 4, the outer and inner lid supports 6 are inserted into the through hole 41 formed in the center of the outer lid 4, and the locking member provided on the inner wall of the through hole 41 is inserted. The fitting protrusions 61, 61 provided on the outer peripheral wall of the inner lid support 6 may be forcefully fitted into the mating recesses 42, 42.

After that, with the inner lid support 6 attached to the outer lid 4,
The head of the combined body 9 is fitted into the engaging collar 64 of the central hole 69. Then, the insertion hole 92 at the bottom of the combined body 9
By forcibly fitting the head 23 of the fitting shaft 11 of the inner cover 1 into the inner cover 1, the inner cover 1 is removably attached to the outer surface of the outer cover 4, as shown in FIG.

Now, the bubble-like oneba generated in the inner pot 3 during rice cooking will be blown out from the window hole 15 onto the top surface of the inner lid 1, but when the bubble-like oneba is released from the window hole 15, it will be destroyed and the top surface of the inner lid 1 will be blown out. It becomes liquid in . Then, this oneba flows on the upper surface of the inner lid 1 toward the lower slope, and is sequentially returned into the inner pot 3 through the central through hole 13.

[Brief explanation of the drawing]

FIG. 1 is an overall sectional view of an embodiment of the present invention, FIG. 2 is a sectional perspective view of the window hole 15 portion, FIG. The figure is a cross-sectional perspective view of the inner lid support 6, and FIG. 5 is an explanatory diagram of a conventional example.
...window hole.

Claims (1)

[Scope of utility model registration request] The upper surface of the inner lid of the rice cooker has a slope that deepens from the outer periphery toward the center, and a through hole is bored in the deepest part of this slope, so that when the outer lid is closed, the periphery of the inner lid 1 and the inner pot are formed. In the inner lid structure of the rice cooker in which the inner lid 1 is brought into close contact with the inner lid 1, a window hole formed by partially cutting and raising the surface of the inner lid 1 is provided near the outer periphery of the inner lid 1.
The inner lid structure of the rice cooker is such that this window hole opens inward along the upper surface of the inner lid 1.