JPS5938167Y2 - Electric rice cooker shoulder structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a shoulder structure for an electric rice cooker, and its purpose is to prevent shoulder melting in an indirect-cooking electric rice cooker.

Hereinafter, an electric rice cooker according to an embodiment of the present invention will be described with reference to the accompanying drawings.

Fig. 1 shows an electric rice cooker that can both cook rice and keep warm. Reference numeral 1 is a cylindrical main body case with a bottom, 2 is an openable and closable lid body that covers the upper opening of the main case 1, and 3 Reference numeral 4 indicates a rice cooking heater disposed at the inner bottom of the main body case 1, and 4 indicates a rice cooker that is removably housed within the main body case 1.

The main body case 1 is composed of an outer case 5 made of sheet metal and an inner case 6 made of light alloy such as aluminum, and the upper opening edges of both are joined by an annular shoulder member 7 made of synthetic resin. There is.

Reference numeral 11 denotes a heat insulating material filled in the main body case 1 and the lid body 2.

The rice bowl 4 is housed in the main body case 1 with the outer flange 9 formed on the rim thereof placed on the outer flange 8 formed on the rim of the inner case 60, and the inner case 6 and A closed space 10 is formed between the rice bowl 4 and the rice bowl 4.

The air in the closed space 10 is highly heated by the rice cooking heater 3 during rice cooking.

The upper opening of the rice bowl 4 is sealed by an inner lid 12 elastically supported on the lower surface of the lid 2 when the lid 2 is closed.

Next, the shoulder structure of the electric rice cooker will be described in detail with reference to FIGS. 2 and 3.

At the joint portion between the outer collar 8 of the inner case 6 and the shoulder member 7,
A coupling auxiliary member 13 made of heat-resistant synthetic resin is interposed to prevent direct conduction from the inner case outer collar 8 to the seven shoulder members.

The coupling auxiliary member 13 is constructed by integrally protruding an inverted conical flange 15 and an outward flange 16 from both upper and lower ends of a spouter-like cylinder 14.

A cutout hole 17 is formed in the inner cylinder 14, and the inside thereof serves as a storage chamber 18 for a hexagonal nut 21.

Reference numeral 19 (a stepped portion integrally protruding from the lower end of the inner circumference of the cylinder 14) and 20 are screw holes.

The hexagonal nut 21 connects the storage chamber 1 in the cylinder 14 from the notch hole 17.
It is stored in 8.

At this time, the hexagonal nut 21 is prevented from falling off by the stepped portion 19.

On the other hand, a hole 22 is formed at a suitable location in the shoulder member 7, and the coupling auxiliary member 13 is inserted into the hole 22 from below.

Then, the outer flange 8 of the inner case 6 is brought into contact with the flange 15 of the coupling auxiliary member 13, and the inner case 6 and the shoulder member 7 are coupled by tightening the screws 23 to the hexagonal nuts 21.

At this time, the outward flange 16 of the coupling auxiliary member 13 is brought into contact with the lower surface of the shoulder member 7.

In this way, the inner case outer flange 8 and the shoulder member 7 have a coupling structure in which they do not come into direct contact with each other, and heat conduction from the inner case 6 to the shoulder member 7 can be extremely reduced.

Note that an appropriate number of holes 22 are formed around the entire circumference of the shoulder member 7.

Further, the coupling auxiliary member 13 is not limited to the illustrated embodiment, and its shape etc. may be modified as appropriate as long as it has a structure that prevents heat from the inner case 6 from being directly conducted to the shoulder member 7. Of course, it is possible.

In the drawings, reference numeral 24 indicates a heat-retaining heater, 25 a center thermostat, and 26 a switch lever.

Next, the effects of the shoulder structure of the electric rice cooker of the present invention will be listed below.

That is, according to the present invention, (1) The outer flange 9 of the edge of the rice bowl 40 is placed on the outer flange 8 of the edge of the metal inner case 60 that constitutes the inner surface of the main body case 1, and the inner case 6 and the rice bowl are connected. In the indirect cooking electric rice cooker which is configured to form a sealed space 10 between the inner case outer flange 8 and the synthetic resin shoulder member 7, there is a connecting aid made of heat-resistant synthetic resin. Since the member 13 is interposed to prevent direct heat conduction from the inner case 6 to the shoulder member 7, thermal deformation of the shoulder member 7 due to the increase in temperature of the closed space 10 in the indirect cooking method is avoided. Alternatively, it is possible to prevent thermal melting and improve durability. (2) The shoulder member 7 can be made of a relatively inexpensive material because thermal deformation or thermal melting of the shoulder member 7 can be prevented. (3) The construction is very simple, as only the coupling auxiliary member 13, which is a separate member, is interposed between the shoulder member 7 and the outer flange 8 of the inner case. This has practical effects such as improving productivity and after-sales service such as replacement.

[Brief explanation of the drawing]

Fig. 1 is a procedural sectional view of an electric rice cooker with a shoulder structure according to an embodiment of the present invention, Fig. 2 is an enlarged view of part A in Fig. 1, and Fig. 3
This figure is a partially exploded perspective view of the shoulder structure in the electric rice cooker of FIG. 1. 1...Main case, 3...Rice cooking heater, 4...Rice bowl, 5...Outer case, 6
...Inner case, 7...Shoulder member, 8,9
...Outer tsuba, 10...Enclosed space, 13.
...Connection auxiliary member.

Claims (1)

[Scope of utility model registration request] A rice-cooking heater 3 is disposed at the inner bottom of the main case 1, which is made up of an outer case 5 and an inner case 6 made of metal, and whose opening edges are joined by an annular shoulder member 7 made of synthetic resin. The rice bowl 4 is stored in the case 1 so that the outer flange 9 on the edge of the rice bowl 40 is placed on the outer flange 8 on the edge of the inner case 60, and the space between the inner case 6 and the rice bowl 4 is sealed. The electric rice cooker having a space 10 is characterized in that a coupling auxiliary member 13 made of heat-resistant synthetic resin is interposed between the outer flange 8 on the edge of the inner case 60 and the shoulder member 7. Shoulder structure of electric rice cooker.