JPH09313341A - rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive lid body without using screws or an outer lid cover. SOLUTION: This rice cooker is provided with a metallic pot 31 in a blind cylindrical shape freely attachably and detachably housed in a rice cooker main body, the lid body 35 for freely openably and closably covering the upper surface opening part of the rice cooker main body 32, an outer lid 39 for forming the upper surface of the lid body 35, a metallic heat radiation plate 41 for forming the lower surface of the lid body 35 and pot packing 42, the lower part of the pot packing 42 is abutted on the upper surface opening part of the pot 31 and the upper part is adhered and fixed to the lower surface of the heat radiation plate 41.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a configuration of a lid of a rice cooker used in a general household or the like.

[0002]

2. Description of the Related Art Conventionally, a lid of this type generally has a configuration as shown in FIG. 4 or 5. The configuration will be described below with reference to the drawings.

In FIG. 4, a pot 1 is detachably housed in a rice cooker body 2. The lid 3 covers the opening on the upper surface of the rice cooker main body 2 so as to be openable and closable. An outer frame of the lid body 3 is constituted by an outer lid cover 4, and a lower surface of the pot 1 side is constituted by a heat dissipation plate 5,
An annular pan packing 6 having a V-shaped cross section is provided on the outer peripheral side of the heat dissipation plate 5, and the pan packing 6 is interposed between the heat dissipation plate 5 and the outer lid cover 4, and is fixed by being sandwiched by a screw 7. There is. The entire circumference of the upper surface of the flange 8 above the pan 1 is in close contact with the entire circumference of the lower end of the pan packing 6 to prevent water vapor generated in the upper part of the pan 1 from leaking to the outside, and the tip 9 of the heat sink 5 It is configured so as to dig into the pan packing 6 to prevent water vapor from entering the lid 3 through the gap between the heat radiating plate 5 and the pan packing 6.

FIG. 5 shows a structure in which the heat radiating plate 16 and the pan packing 17 are fixed to the outer lid cover 15 by tightening the screws 14 from above the outer lid cover 15 so that the screws cannot be seen when the lid 13 is opened. is there.

[0005]

However, in the above-mentioned structure, since the close contact between the heat sink and the pan packing is fixed by sandwiching it with a screw, in order to maintain the close contact of the part without the screw. , 6 to 8 screws were required to be evenly provided. In addition, as shown in FIG.
Screw 14 to keep it invisible when opened
Since there is no choice but to fix the upper lid to the outer lid cover 15 from above, the outer lid cover 14 is required, and further, the heat sink 1
6, the shape of the pan packing 17 is complicated, and there is a problem that the cost is high.

The present invention is intended to solve the above problems, and it is a first object of the present invention to provide a lid body which does not require a screw or an outer lid cover and which can reduce the manufacturing cost.

The second purpose is to improve the coupling force between the heat sink and the pan packing, in addition to the first purpose.

A third object is, in addition to the above first object, when the water adhering to the outside of the pan is set in the rice cooker body as it is, the pan is heated to become steam. It is to prevent the invasion of the inside of the lid.

A fourth object is to improve the appearance of the pan packing part when the lid is opened, in addition to the third object.

[0010]

In order to achieve the above first object, the present invention provides a rice cooker body, a bottomed cylindrical metal pot removably housed in the rice cooker body, and A lid that covers the top opening of the rice cooker so that it can be opened and closed, an outer lid that forms the top of the lid, a metal radiator plate that forms the bottom of the lid, and the lower part of the lid to the top opening of the pan. It is equipped with a rubber pot packing that is in contact with the upper surface of the radiator plate by adhesive bonding.

In order to achieve the above-mentioned second object, the present invention particularly provides a hole in the bonding portion of the radiator plate with the pan packing,
In the pot packing, a protrusion having a diameter larger than the hole is formed from the hole to the upper surface of the heat dissipation plate.

In order to achieve the above-mentioned third object, the present invention particularly relates to the engaging portion formed by the engaging claw provided on the lower surface of the outer lid and the engaging hole provided at the upper end of the heat dissipation plate, and the lower surface of the outer lid. A ring-shaped rib provided on the pan and a tongue portion that comes into full contact with the rib are provided on the pan packing.

In order to achieve the above-mentioned fourth object, the present invention particularly relates to a ring-shaped rib provided on the lower surface of the outer lid and a tongue portion of the pan packing, which is located at the outer peripheral position of the engaging portion between the outer lid and the heat dissipation plate. And an abutting portion for contacting with.

[0014]

According to the first aspect of the invention, since the pan packing is adhesively fixed to the heat radiating plate, it is not necessary to sandwich and fix the heat radiating plate and the pan packing with screws to form a close contact. Therefore, since a screw tightening step is not required, the manufacturing cost can be reduced.

According to the second aspect of the present invention, the heat dissipation plate is provided with a hole, and the protrusion of the pan packing having a diameter larger than the hole is formed on the upper surface of the heat dissipation plate. Therefore, the heat dissipation plate and the pan packing are adhered to each other. In addition to the fixing force, the resistance force in the direction in which the pan packing protrusion protrudes from the heat dissipation plate hole is added, so that the coupling force between the heat dissipation plate and the pan packing can be improved.

According to the third aspect of the invention, before rice is cooked, the water used for polishing the rice adheres to the outside of the pan, and when the water is set in the rice cooker body without being wiped off, the pan is heated. By doing so, the moisture becomes water vapor, but the tongue of the pan packing is in full contact with the ring-shaped rib on the lower surface of the outer lid, so the moisture adhering to the outside of the pan enters the inside of the lid. There is nothing to do.

According to a fourth aspect of the present invention, the ring-shaped rib provided on the lower surface of the outer lid for preventing water vapor from entering the inside of the lid and the tongue portion of the pan packing have an outer lid and a heat radiating plate. Since it is arranged at the outer peripheral position from the engaging part with, the engaging claw provided on the lower surface of the outer lid and the engaging hole provided at the tip of the heat dissipation plate cannot be seen from the outside even if the lid is opened, A rice cooker that looks good can be provided.

[0018]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
Will be described with reference to. 1-2, the pot 31
Is detachably stored in a pan storage portion 33 formed inside the rice cooker body 32. A hinge 34 is provided above and behind the rice cooker main body 32, and a lid 35 that is openable and closable around the hinge 34 is attached. The lid 35 is located above the rice cooker main body 32 so as to cover the upper part of the pot 31. Pot 31
Is heated at its bottom by induction heating coils 36 and 37, and the heater 3 whose side is wound around the side surface of the pan storage portion 33
The structure is heated by 8.

The lid 35 comprises an outer lid 39 on its upper surface,
A plurality of engaging claws 40 are provided on the lower surface of the outer lid 39. Lid 3
The lower surface of 5 is formed of a heat sink 41 made of metal.
A heat radiating plate 41 is attached to the outer lid 39 by providing an engaging hole 42 that engages with an engaging claw 40 provided on the lower surface of the outer lid 39 at the upper end portion of the.

A pan packing 42 made of silicone rubber is adhesively fixed to the outer periphery of the lower surface of the heat dissipation plate 41. The heat radiating plate 41 and the pan packing 42 are adhered by applying a primer to the heat radiating plate 41 in advance and then vulcanizing and adhering the heat radiating plate 41 by insert molding when the pan packing 42 is molded. The pot packing 42 has a V-shaped cross section, and the pot 3
The entire circumference of the lower end portion of the pan packing 42 is in close contact with the entire circumference of the upper surface of 1 to prevent water vapor generated in the upper part of the pan 31 from leaking to the outside.

In the lid 35, a heat insulating material 43 is arranged above the heat radiating plate 41, and a lid heater 44 is attached to the upper surface of the heat radiating plate 41 with an aluminum foil tape. Further, a steam hole 45 for leading out steam to the outside of the pot 31 is penetrated in the vertical direction of the lid body 35.

(Embodiment 2) Next, the construction of the lid portion of the second embodiment of the present invention will be described with reference to FIG. As shown in the figure, a hole 46 is provided in the bonding portion of the heat dissipation plate 41 with the pan packing 42. The pan packing 42 penetrates through the hole 46 to form a protrusion 47 having a diameter larger than the hole 46 on the upper surface of the heat dissipation plate 41.

A ring-shaped rib 48 is provided on the lower surface of the outer lid 39 at the outer peripheral position of the engaging portion with the heat dissipation plate 41, and a tongue portion 49 is formed on the entire circumference of the pot packing, and the tip of the tongue portion 49 is a ring. The ribs 48 are in close contact with each other to prevent external steam from entering the lid 35.

The operation of the above configuration will be described. First, when cooking rice is started, induction heating coils 36, 3
7 and the heater 38 heat the bottom and sides of the pot 31. When the rice and water in the pan 31 are heated and start to boil, steam is generated from the upper part of the pan 31, and this steam passes through the steam holes 45 opened in the lid 35 and the rice cooker main body 3
2 is discharged to the outside.

[0025]

As described above, according to the first aspect of the present invention, since the metal radiator plate forming the lower surface of the lid and the pot packing are adhesively fixed, the radiator plate and the pot are screwed together. There is no need to sandwich and fix the packing to form a close contact. Therefore, since a screw tightening step is not required, the manufacturing cost can be reduced.

According to the second aspect of the present invention, a hole is provided in the bonding portion of the heat dissipation plate with the pan packing, and a projection having a diameter larger than the hole is formed in the pan packing from the hole to the upper surface of the heat dissipation plate. Since the heat dissipation plate and the pan packing are fixed together, the resistance force in the direction in which the pan packing protrusion protrudes from the heat dissipation plate hole is added to the fixing force to improve the bonding force between the heat dissipation plate and the pan packing. .

According to the third aspect of the invention, even when the water used for polishing the rice adheres to the outside of the pan before rice is cooked and is set in the rice cooker body without being wiped off. Even if steam is generated by heating the pan, the pan packing has a ring-shaped rib on the lower surface of the outer lid and a tongue that makes full contact with the rib. Can be prevented from entering.

Further, according to the invention as set forth in claim 4, the abutting portion between the ring-shaped rib provided on the lower surface of the outer lid and the tongue portion of the pan packing is located on the outer periphery of the engaging portion between the outer lid and the heat radiating plate. Since it is located at the position, the engaging claw provided on the lower surface of the outer lid and the engaging hole provided at the tip of the heat dissipation plate are not visible from the outside even when the lid is opened, providing a good-looking rice cooker. can do.

[Brief description of drawings]

FIG. 1 is a partial sectional view of a rice cooker showing an embodiment of the present invention.

FIG. 2 is a sectional view of the main part around the lid of the rice cooker.

FIG. 3 is a sectional view of the main part around another lid of the rice cooker.

FIG. 4 is a sectional view of a main part of a rice cooker showing a conventional example.

FIG. 5 is another sectional view of the main part of the rice cooker.

[Explanation of symbols]

 31 pan 32 rice cooker main body 35 lid 39 outer lid 41 heat sink 42 pan packing 48 ring-shaped rib 49 tongue

Claims (4)

[Claims] 1. A rice cooker main body, a bottomed tubular metal pan that is detachably housed in the rice cooker main body, a lid that covers the top opening of the rice cooker main body in an openable and closable manner, and a lid. The outer lid that forms the upper surface of the lid, the metal radiator plate that forms the lower surface of the lid, and the rubber pot packing that abuts the lower portion on the upper opening of the pot and the upper portion is adhesively fixed to the lower surface of the radiator plate. Equipped rice cooker. 2. The rice cooker according to claim 1, wherein a hole is provided in an adhesion portion of the heat dissipation plate to the pan packing, and a projection having a diameter larger than the hole is formed on the pan packing from the hole to the upper surface of the heat dissipation plate. 3. An engaging portion formed by an engaging claw provided on the lower surface of the outer lid and an engaging hole provided at the upper end of the heat dissipation plate, a ring-shaped rib provided on the lower surface of the outer lid, and the entire circumference of the rib. The rice cooker according to claim 1, wherein the abutting tongue portion is provided on the pan packing. 4. The contact portion between the ring-shaped rib provided on the lower surface of the outer lid and the tongue portion of the pan packing is disposed at an outer peripheral position of the engaging portion between the outer lid and the heat dissipation plate. rice cooker.