JPS5934405Y2 - Lid for rice cookers, etc. - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a lid for a rice cooker or the like equipped with a steam venting device, and is particularly aimed at increasing strength and preventing abnormal leakage of steam.

In the lid body of this type of rice cooker, etc., the outer lid is made of heat-resistant plastic, and its inner surface is covered with a heat sink with good heat conductivity and an inner cover made of heat-resistant plastic. A heat insulating heater, etc. was placed on the top of the unit.

Further, a handle portion is provided on the upper surface of the outer lid, and it is customary to provide a hinge device at one end of the handle portion and a latch device at the other end.

For this reason, the mechanical strength of the parts where the hinge device and the hook device are installed is relatively high, and the lid does not easily deform even if it is exposed to high temperatures, but other parts, especially the outer lid, The portion located approximately perpendicular to the provided handle portion has low mechanical strength, and has the disadvantage that it is easily deformed when external force is applied or the lid is exposed to high temperatures.

The present invention eliminates the above-mentioned drawbacks of the conventional technology, and forms thick insides at multiple locations on the peripheral edge of the inner cover.
By providing a through hole in the midsection of the steam release part facing this thick interior, deformation during application and at high temperatures is prevented, steam leakage is eliminated, and rice can be cooked well.

The present invention will be explained below with reference to illustrated examples.

In the figure, 1 is a substantially cylindrical outer case with open top and bottom surfaces, and 2 is an inner case installed inside the outer case 1 via a heat insulating material 3, the upper end of which is connected to the upper end of the outer case 1. It is fixed to the fitted mounting frame 4 made of heat-resistant plastic by special screwing means.

Reference numeral 5 denotes a bottom plate having support legs 6, which are fitted onto the lower end of the outer case 1.

Reference numeral 7 denotes a pot having an outward facing flange 8 formed at its upper end opening, and is housed in the inner case 2 by placing the front iC flange 8 on the upper surface of the mounting frame 4.

The height and outer diameter of the pot 7 are set to be smaller than the inner case 2, so that a space 9 surrounded by the inner case 2 is formed around the outer periphery of the pot I.

Reference numeral 10 denotes a rice cooking heater consisting of a sheathed heater bent into a predetermined shape, and is supported by an insulator 11 and a presser fitting 12 at the inner bottom of the inner case 2 at a predetermined distance from the pot 7 in the space 9. There is.

13 is a thermostat provided on the inner bottom of the inner case 2 so as to be freely retractable, and 14 is a heat shield plate, which holds a heat insulating material 15 on the upper surface.

Reference numeral 16 denotes a lid rotatably attached to the upper end of the outer case 1 by a hinge device 17, and is composed of an outer lid 18 and an inner cover 19 fixed to its inner surface. A space 20 is formed between them, and a heat insulating board 21 is housed in this space.

22 is a handle portion for carrying provided on the upper surface of the outer cover 18, 23 is a heat sink fixed to the lower surface of the inner cover 19 with screws 37, and a heat insulating heater 24 is disposed on the upper surface.

Both the outer cover 18 and the inner cover 19 are made of heat-resistant plastic, and the inner cover 19 is attached to the opening edge of the outer cover 18.
The outer peripheral edges of the two are fitted and fixed with screws 25.

Reference numeral 26 denotes thick-walled portions formed on the peripheral edge of the inner cover 19, which are provided at a plurality of locations.

That is, it is disposed at a position substantially perpendicular to the handle portion 22 of the outer lid 18.

A holding member 27 is located on the opposite side of the hinge device 17 and is fixed to the outer case 1. When the lid body 16 is closed, the hook provided on the handle portion 22 engages with the metal device 28 to close the lid body. 1
6 is held in a closed state.

30 is a push button for releasing the engagement between the engaging portion 29 and the latch device 28; 31 is a heat-retaining heater disposed on the upper part of the outer surface of the inner case 2; and 32 is an inner lid.

Reference numeral 33 denotes a steam vent, which penetrates the outer cover 18, inner cover 19, and heat sink 23 and opens to the outside. It fits freely.

Reference numeral 35 denotes a through hole provided in the midsection of the steam vent section 33, which opens so as to face the thick interior 26 of the inner cover 19.

Next, the operation of this embodiment having the above configuration will be explained.

Put washed rice and the required amount of water into the pot 7, store the pot I in the inner case 2, close the lid 16, and turn on the rice cooker 10.
When energized, air heated by the rice cooking heater 10 convects in the space 9, and this heated air and the heater 1
The pot 7 is heated from the entire surface by radiant heat directly radiated from the pot 7, and rice is cooked.

When the water in the pot 7 runs out and the rice cooking is completed and the temperature at the bottom of the pot 7 rises rapidly, the thermostat 13 detects this temperature, cuts off the electricity to the rice cooking heater 10, and turns off the heat retention heater 2.
Switch to energization to 4 and 31.

This heat-retaining state is insulated by the heat insulating materials 3, 15, and 21 arranged so as to surround the pot 7, making it possible to keep the pot 7 warm for a long time.

Steam generated in the pot 7 during rice cooking is led upward through the steam vent 33 and discharged to the outside from the top surface of the lid 16.

A part of the steam passing through the steam vent part 33 is released into the space surrounded by the inner lid 32, the inner cover 2, and the heat sink 23 through the through hole 35 provided in the midsection, and the steam generated during cooking is removed. etc. are returned to the upper surface of the inner lid 32 through this through hole.

Now, in this embodiment, the outer cover 18 and the inner cover 19 are
are made of heat-resistant plastic, but since a plurality of thick-walled parts 26 are formed on the periphery of the inner cover 19, the lid body 16 is exposed to high temperature atmosphere during rice cooking. This also eliminates the problem of easily deforming the inner lid even if too much force is applied when operating the inner lid by normal operation of the handle portion 22.

In addition, the through hole 3 provided in the middle part of the thick part 26 and the steam vent part 33
5 are in a facing relationship, the steam emitted from the through hole can be dispersed using the inner wall surface of the thick-walled portion 26, and the steam is ejected with such force that it hits the main body 1. It is also possible to eliminate the phenomenon in which steam abnormally blows out from the gap between the surface of the lid body 16 and the lid body 16.

As described above, according to the present invention, the mechanical strength of the lid body itself is increased, so that it can sufficiently withstand even if the lid closing operation is handled somewhat roughly, and it also maintains good steam release. This has the practical effect of eliminating the abnormal steam blowing phenomenon.

[Brief explanation of drawings]

The figure shows one embodiment of the rice cooker according to the present invention.
The figure shows a front view showing a main part in a cutaway cross section, FIG. 2 shows a bottom view of the lid, and FIG. 3 shows a sectional view taken along the line ■--■ in FIG. In the figure, 1 is an outer case, 2 is an inner case, 16 is a lid, and 17
18 is the hinge device, 18 is the outer lid, 19 is the inner cover, 22 is the handle portion, 26 is the thick wall portion, 28 is the entire device, 29 is the engaging portion, 32 is the inner lid, and 33 is the steam vent portion. .

Claims (1)

[Scope of utility model registration request] An outer lid that has one end connected to the upper part of the main body by a hinge device and a handle portion provided with a hook device that removably engages with an engaging portion provided on the main body at the other end; A plastic inner cover is provided to cover the steam vent, and a steam vent is provided to communicate with the outside by penetrating the inner cover and the outer cover, and a thick wall portion is provided at an appropriate position on the inner surface of the inner cover. A lid body for a rice cooker or the like is also provided with a through hole in the midsection of the steam vent portion facing the thick interior.