JPH03916Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention relates to cooking appliances such as rice cookers and rice cookers.

(Prior art and its problems) In general, in this type of cooker, the upper end of the exterior body and the upper end of the outer pot located inside this are connected via an upper ring, but the upper end of the outer pot Conventionally, screws or the like were used to secure the upper ring to the upper ring, which resulted in a large number of parts.In addition, in the conventional structure, the contact area between the outer pot and the upper flange was relatively large, and the upper ring was fixed from the outer pot to the upper ring. The heat conduction to the upper ring also increased, which was not very desirable in terms of heat retention properties and heat resistance of the upper ring.

(Purpose of the invention) The present invention was developed in view of the above points, and it is possible to firmly fix the outer pot and the upper ring without using fixing parts such as screws, and to minimize the contact area between the outer pot and the upper ring. It is designed to be kept small to reduce heat conduction.

(Example) An example of the present invention shown in the drawings will be described in detail below.

FIG. 1 is a sectional view of a main part of a rice cooker according to an embodiment of the present invention. 1 is an exterior body; 2 is an outer pot having a rice cooking heater (not shown) in the inner bottom; 3 is an upper ring connecting the upper end of the exterior body 1 and the upper end of the outer pot 2;
This upper ring 3 is molded from thermoplastic resin such as polypropylene. 4 is an inner pot that can be moved in and out of the outer pot 2; 5 is an outer lid that can be opened and closed by a hinge; 6 is an inner lid that is supported by the outer lid 5 and closes the opening of the inner pot 4; 7 is a latch lever. .

As shown in the second figure, the upper ring 3 is integrally formed with a dew receiving groove 8 on the upper surface and an inwardly directed flange 9 on the inner periphery, and the flange 9 is formed near the inner periphery of the upper surface. is multiple (e.g. 8
2) projecting pieces 10 are integrally provided at equal intervals in the circumferential direction. Further, each protrusion 10 is attached to the flange 9 of the upper ring 3.
A through hole 11 is formed close to the outer periphery of each.

On the other hand, as shown in the third figure, the outer pot 2 has an outward facing flange 12 around the entire upper end, and a hanging wall 13 is formed on the outer peripheral edge of the flange 12, which abuts on the upper surface of the flange 9. The tip of the protruding piece 10 comes into contact with the back surface of the flange 12. Further, a tongue piece 14 that is inserted into the through hole 11 is provided protruding from the tip of the hanging wall 13.

In the above configuration, the outer pot 2 and the upper ring 3 are fixed by inserting each tongue piece 14 into each through hole 11, and abutting each projecting piece 10 on the back surface of the flange 12 and the hanging wall 13 on the flange 9. This is done by bending or twisting the tip of each tongue piece 14 at a right angle as shown in the first figure. In this state, although the projecting piece 10 is partially located, it is directly inside the fixed part by the through hole 11, that is, the tongue piece 14, and the flange 1
2, the fixation by the tongue piece 14 is firm, and deformation due to bending of the tongue piece 14 does not appear on the flange 12. The contact area between the outer pot 2 and the upper ring 3 can be reduced by partially providing the protruding pieces 10, and heat conduction from the outer pot 2 to the upper ring 3 can be suppressed to a small level.
Therefore, not only favorable results are obtained in terms of heat retention properties, but also extremely good heat resistance is achieved for the upper ring 3, which is often molded from thermoplastic resin.

(Effects of the invention) According to the present invention having the above structure, the outer pot and the upper ring can be firmly fixed without using fixing parts such as screws, and the contact area between the outer pot and the upper ring can be reduced. Heat conduction during this time can be suppressed,
This is an extremely useful idea that can eliminate all the previous inconveniences.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the main parts of the rice cooker in the embodiment of the present invention, Fig. 2 is an explanatory diagram of the structure of the above ring, and Fig. 3 is an explanatory diagram of the structure of the above ring.
The figure is an explanatory diagram of the structure of the outer pot. 1: Exterior body, 2: Outer pot, 3: Upper ring, 9: Flange, 10: Projection piece, 11: Through hole, 12: Flange, 13: Hanging wall, 14: Tongue piece.

Claims (1)

[Scope of utility model registration request] The upper end of the exterior body and the upper end of the inner outer pot are connected via an upper ring, in which an inward flange is integrally molded around the entire circumference of the inner periphery of the upper ring, and the flange A plurality of protrusions are integrally provided on the upper surface at equal intervals in the circumferential direction, and through holes are bored in proximity to the outer periphery of the protrusions, and on the other hand, an outward flange is provided at the upper end of the outer pot. A hanging wall is formed around the entire circumference so that the tip of the protrusion comes into contact with the back surface of the flange, and a hanging wall whose tip abuts on the flange of the upper ring is formed on the outer peripheral edge of the flange of the outer pot. 1. A cooking utensil, characterized in that the hanging wall has a tongue piece formed at the tip thereof which is inserted into the through hole and bent.