JPS63176Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the improvement of the lid device of a rice cooker, and in particular, the invention relates to an improvement in the lid device of a rice cooker, and particularly to an insertion hole drilled in the lid for inserting a guide tube that guides steam generated inside the rice cooker body to the outside. It is an object of the present invention to enable the gap between the guide tube and the guide tube to be closed with a simple configuration.

Conventionally, in this type of lid device, the lid is provided with an insertion hole through which the guide tube is inserted.
If a user mistakenly pours more water into the inner pot than usual and cooks rice, a large amount of oneba will flow out from this guide tube, and this leaked oneba will run along the outer wall of the guide tube and pass through. The hot spring flows into the hole and reaches the heat insulating heater through the reinforcing frame and the surface of the heat sink, resulting in poor insulation of the heat insulating heater.

The present invention aims to improve these drawbacks, and examples thereof will be described below.

1 is the rice cooker main body, frame 2 that opens the top
, an outer pot 4 housed in the frame 2 via a heat insulating material 3, a frame cover 5 connecting the upper edges of the frame 2 and the outer pot 4, and a frame cover 5 that can be inserted into and removed from the outer pot 4. It consists of an inner pot 6 to be stored, a lid 7 that can open and close the top opening of the main body 1, and an inner lid 8 that closes the top opening of the inner pot 6. The lid body 7 includes an upper lid 11 having a handle 9 on the upper surface and a boss portion 10 on the lower surface, and a ring-shaped reinforcing frame 1 whose outer periphery is in contact with the outer periphery of the upper lid 11.
3, and a heat sink 15 having a heat insulating heater 14 on the top surface.
It is composed of. Reference numeral 16 denotes a guide tube for guiding the steam generated within the main body 1 to the outside, and is molded from synthetic resin such as polysulfone, and has a mounting piece 16a integrally formed in the middle part of the outer circumferential wall and a stepped part 16b in the upper part of the outer circumferential wall. ing. The upper lid 11 is made of synthetic resin such as ABS resin, and
An insertion hole 20 is formed which is slightly softer than the guide tube 16 and into which the tip of the guide tube 16 can be inserted. An annular projection piece 21 is integrally formed on the bottom peripheral edge of the insertion hole 20. 22 is the heat sink 1
This is a sealing gasket that is fitted into a bent piece 15a formed on the outer peripheral edge of the reinforcing frame 13 and held between the reinforcing frame 13.

To explain the operation of this configuration, first, the upper lid 1
While inserting the upper end of the guide tube 16 into the insertion hole 20 so that the upper surface of the mounting piece 16a of the guide tube 16 is in contact with the boss portion 10 of 1, the stepped portion 16b is also brought into contact with the projection piece 21, and then Afterwards, the reinforcing frame 13 is brought into contact with the lower surface of the mounting piece 16a and its outer periphery is brought into contact with the outer periphery of the upper lid 11, and the heat dissipation plate 15 is brought into contact with the lower surface of this reinforcing frame 13 via the gasket 22, and the screws are tightened. At 30, heat sink 15, packing 2
2. The reinforcing frame 13, mounting piece 16a, and boss portion 10 are integrally tightened and fixed. In addition, the boss portion 10
A plurality of them are formed at intervals. During this tightening and fixing, as is clear from FIG. Even if it flows directly or once flows onto the upper surface of the upper lid and then flows down into the insertion hole 20, the crushed part will completely act as a seal, and the one-piece valve will not reach electrical components such as the heat-retaining heater 14. No insulation defects occur.

Since the present invention is constructed as described above,
To perform a complete sealing action without requiring a gasket for preventing oneva inflow as in the past by simply installing an annular protruding piece on the periphery of the bottom of an insertion hole, thereby allowing the oneva flowing back to infiltrate into the lid body. It is possible to prevent insulation deterioration of electrical parts such as heat-retaining heaters.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a rice cooker equipped with the lid device of the present invention, Fig. 2 is a schematic sectional view of the rice cooker, Fig. 3 is an enlarged sectional view of the same main part before the guide cylinder is tightened and fixed, and Fig. 4 is an enlarged cross-sectional view of the same main part after the guide tube is tightened and fixed. 7... Lid body, 11... Top lid, 16... Guide tube,
16b...Stepped portion, 20...Through hole, 21...Protrusion piece.

Claims (1)

[Scope of utility model registration request] A lid body that freely opens and closes an opening on the top surface of a rice cooker main body includes a top lid having a handle on the top surface, and a top lid that is arranged on the bottom surface of the top lid so that its outer periphery abuts the outer periphery of the top lid. It consists of a reinforcing frame, a heat radiating plate having a heat insulating heater on the upper surface and disposed on the lower surface of the reinforcing frame, and a guide tube that guides the steam generated from the main body to the outside is composed of the heat radiating plate, the reinforcing frame and In the case where the guide tube is inserted through and fixed to the upper cover, an annular protrusion piece is provided hanging from the bottom periphery of an insertion hole drilled in the upper cover through which the guide tube can be inserted, and on the other hand, the annular protrusion piece is abutted on the upper outer periphery of the guide tube. A lid device for a rice cooker, characterized in that a stepped portion is integrally formed, and when the guide cylinder is pressed and fixed to the upper lid, the protruding piece is crushed against the upper surface of the stepped portion to close the insertion hole.