JPH09192008A - Electric rice cooker - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] A cord reel when an upper frame or body made of synthetic resin begins to melt due to high heat of the rice cooker and falls on the floor together with the pan for some reason. Keep the safety of the rice cooker by preventing contact between the power terminal provided on the top surface and the metal heat shield frame. SOLUTION: Protrusions 6A and 6B are formed on the bottom surface of a heat shield frame 6 in the vicinity of a power supply terminal portion 9A of a cord reel 9. At this time, by making the length of the projections 6A and 6B longer than the height of the power supply terminal 9A on the upper surface of the cord reel 9, even if the heat shield frame 6 falls, the power supply terminal 9A and the metal The heat shield frame 6 does not contact.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric rice cooker used in general households.

[0002]

2. Description of the Related Art Recent electric rice cookers are required to be safer and easier to use. Conventionally, this kind of electric rice cooker generally has a structure as shown in FIG.

Hereinafter, the configuration will be described with reference to FIG. In FIG. 4, a pot 1 for putting rice and water is stored in a protective frame 2 made of a metal steel plate, and placed on a rice cooker 4 made of aluminum in which a seed heater 3 is cast. It The rice cooker 4 is screwed to the bottom surface of the protective frame 2. The upper frame 5 is made of synthetic resin and holds the upper end of the protective frame 2. A heat shield frame 6 made of a metal steel plate is attached to improve the heat retention performance by the heat insulating effect. The heat shield frame 6 is screwed to the bottom of the protection frame 2 so as to surround the protection frame 2. A synthetic resin body 7 is fitted to the upper frame 5 and further fixed to the heat shield frame 6 by a plurality of screws 8. Reference numeral 9 is a cord reel screwed to the bottom surface of the body 7, and supplies power to the rice cooker 4 and the board unit controlling the temperature sensor via a lead wire. .

When rice cooking is started in the above configuration, the pot 1
The temperature sensor detects the internal temperature and the board unit controls the heating of the cooked rice heater 4 in which the seed heater 3 is embedded, so that delicious rice can be cooked.

[0005]

However, in the above conventional configuration, when the board unit fails due to long-term use in a bad environment such as high temperature and high humidity, the worst case is the control of the rice cooker 4. Then, the rice cooker 4 is kept heated. Therefore, the synthetic resin upper frame 5 and the body 7 begin to melt due to the high heat of the rice cooker 4 and the upper edge of the protective frame 1 is held by the upper frame 5, so that the holding power is lost and the pot 1 Everything falls on the floor. At that time, if the power supply terminal portion provided on the upper surface of the cord reel 9 and the heat shield frame 6 come into contact with each other, sparks may occur.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a rice cooker having a structure in which the power supply terminal portion is not easily short-circuited and which can maintain a safe use state.

[0007]

[Means for Solving the Problems] A first means of the present invention for solving the above-mentioned problems is to provide a pan for pouring rice and water, a heater for heating the pan, and the pan and the heater. A protective frame to be stored, an upper frame made of synthetic resin that holds the upper end of the protective frame, a heat shield frame that is attached to the protective frame by a hollow body, an opening on the upper surface and the bottom frame that fits together A body made of synthetic resin for fixing a screw to the bottom surface of the heat shield frame at several points, and a cord reel having a power source terminal portion on the upper surface of the heat shield frame at least as an incombustible material. The heat shield frame is formed by projecting an incombustible material, which is longer than the height of the power supply terminal portion, between the bottom surface of the heat shield frame and the power supply terminal portion of the cord reel.

Another means is a pot for pouring rice and water,
Heater for heating the pot, a protective frame for housing the pot and the heater, an upper frame made of synthetic resin for holding the upper end of the protective frame, and a heat shield attached to the protective frame by a hollow body. A frame, a synthetic resin body that fits the upper opening and the upper frame, and a bottom surface of which is screwed to the bottom surface of the heat shield frame, and a cord reel below the heat shield frame. Provided, several screws for fixing the body to the bottom surface of the heat shield frame, the distance between the tip of the head and the floor surface, the power supply terminal portion of the cord reel and the bottom surface of the heat shield frame. It is shorter than the interval.

[0009]

According to the first and second aspects of the present invention, even if the upper frame is melted and the heat shielding frame is dropped, the non-combustible material which is projected is contacted with the heat shielding frame, and the cord reel Since there is no contact with the power supply terminal portion, no spark is generated, and only the synthetic resin member such as the upper frame and the body is melted and deformed, so that a situation such as a short circuit of the power supply terminal portion can be prevented.

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 is a pot for putting rice and water, which is stored in a protective frame 2 made of a metal steel plate and placed on a rice cooker 4 made of aluminum in which a seed heater 3 is cast. To be done. Cooking rice
The screw 4 is screwed to the bottom surface of the protective frame 2. The upper frame 5 is made of synthetic resin and holds the upper end of the protective frame 2. Reference numeral 6 denotes a heat shield frame made of a metal steel plate that is attached to improve heat retention performance by the heat insulating effect, and is screwed to the bottom of the heat shield frame 6 and the bottom face of the protection frame 2 so as to surround the periphery of the protection frame 2. . A synthetic resin body 7 is fitted to the upper frame 5 and further fixed to the heat shield frame 6 by a plurality of screws 8. Reference numeral 9 is a cord reel which is arranged below the body 7 and is screwed to the bottom of the body 7, and the cooker heater 4 and the board unit in the body 7 are connected via lead wires. Power is supplied to the sensor, temperature sensor, etc. A power cord is pulled out from the cord reel 9 and connected to a 100V AC power source.
6A and 6B are protrusions formed on the bottom surface of the heat shield frame 6,
It is located near the power supply terminal portion of the drill 9 and above the upper surface of the cord reel 9 made of an incombustible material. Projection 6
A and 6B may be formed by bending a part of the heat shield frame 6, or may be manufactured as a separate part and attached to the heat shield frame 6 by welding or the like, but the lengths of the protrusions 6A and 6B are equal to each other. Dolly 9
Is longer than the height of the power supply terminal portion 9A on the upper surface of the.

In the electric rice cooker configured as described above, as described in the conventional example, the board unit fails and the control of the rice cooker 4 becomes impossible. A case will be described in which a state occurs in which heating continues. If left as it is for a long time, the synthetic resin upper frame 5 and the body 7 will start to melt, and the upper edge of the protective frame 1 is held by the upper frame 5, so that the holding power is lost. Everything falls on the floor. However, even if the heat shield frame 6 falls, the protrusions 6A and 6B are
Since the bottom surface of the heat shield frame 6 and the power supply terminal portion 9A of the cord reel 9 do not come into contact with the upper surface of the cord reel 9 formed of an incombustible material, no spark is generated and the upper frame 5 or The safety of the rice cooker body can be maintained simply by melting and deforming the synthetic resin member such as the body 7.

(Second Embodiment) Further, a second embodiment of the present invention will be described with reference to FIG. The pot 1, the protective frame 2, the seed heater 3, the rice cooker 4, the upper frame 5, the heat shield frame 6, the body 7, the screw 8, and the cord reel 9 are the same as the conventional example. The description is omitted. Reference numeral 9B denotes a projection of non-combustible material provided on the upper surface of the cord reel 9, which is located near the power supply terminal of the cord reel 9. In the present embodiment, the screw is set up. The length of the protruding portion 9B protruding from the upper surface of the cord reel 9 is longer than the height of the power supply terminal portion 9A.

In the electric rice cooker configured as described above, the rice cooker 4 as described in the first embodiment.
A case will be described in which a state occurs in which power is continuously supplied to and the heating continues. If left as it is for a long time, the upper frame 5 and the body 7 made of synthetic resin start to melt, and the upper end of the protective frame 1 is held by the upper frame 5, so the holding power is lost and the pan 1 and the floor It will fall on the surface. However, even if the heat shield frame 6 falls down, the bottom surface of the heat shield frame 6 hits the projection 9B, and the bottom surface of the heat shield frame 6 and the cord reel.
Since the power source terminal portion 9A of the ruler 9 does not contact, spark does not occur and only the synthetic resin members such as the upper frame 5 and the body 7 are melted and deformed, and the safety of the rice cooker body is maintained. be able to.

(Third Embodiment) Next, a third embodiment will be described with reference to FIG. Pan 1, protection frame 2,
The seed heater 3, the rice cooker 4, the upper frame 5, the heat shield frame 6, the body 7, and the cord reel 9 are the same as those in the above-mentioned example, and the description thereof will be omitted. Reference numeral 8 is a screw for fixing the heat shield frame 6 and the body 7, and as shown in the figure, the length X of the screw 8 is equal to that of the cord reel 9.
The length of the screw 8 and the boss 7A of the body 7 are determined so as to be shorter than the gap Y between the power supply terminal portion 9A and the bottom surface of the heat shield frame 6. Although only one screw 8 is shown in FIG. 3, at least two screws 8 are provided on the front side of the rice cooker body (left side of the heat shield frame in FIG. 3) and the rear side of the rice cooker body (heat shield in FIG. 3). Install multiple units with the same configuration on the right side of the frame.

In the electric rice cooker configured as described above, as described in the first and second embodiments, the rice cooker 4 is kept energized and kept heated. A case will be described. If left as it is for a long time, the synthetic resin upper frame 5 and the body 7 will start to melt, and the upper edge of the protective frame 1 is held by the upper frame 5, so that the holding power is lost. Everything falls on the floor. However, even if the heat shield frame 6 falls,
Before the bottom surface of the heat shield frame 6 contacts the power supply terminal portion 9A of the cord reel 9, the head of the screw 8 hits the floor surface. Therefore, sparks do not occur, and the safety of the rice cooker body can be maintained only by melting and deforming the synthetic resin members such as the upper frame 5 and the body 7.

[0016]

As described above, according to the first aspect of the invention, the substrate is provided by providing the protrusion so that the power supply terminal portion of the cord reel and the heat shield frame of the metal material do not come into contact with each other. In the worst case, the unit broke down and the rice cooker control was disabled, and the rice cooker continued to be heated, causing the synthetic resin top frame and body to begin to melt and Even if the heat shield frame is melted and falls, the protrusions are interposed, so that it is possible to avoid contact between the bottom surface of the heat shield frame and the power supply terminal portion of the cord reel, and the safety of the rice cooker can be maintained.

According to the second aspect of the present invention, the distance between the head end of the screw and the floor surface of the screw fixing the body to the bottom surface of the heat shield is determined by the power supply terminal portion of the cord reel. By making the gap shorter than the distance between the heat shield and the bottom of the heat shield frame, even if the heat shield frame falls, the head of the screw will be on the floor before the bottom face of the heat shield frame contacts the power supply terminal of the cord reel. Since it touches the surface, it is possible to avoid contact between the bottom surface of the heat shield frame and the power supply terminal portion of the cord reel, and the safety of the rice cooker can be maintained.

[Brief description of the drawings]

FIG. 1 is a sectional view of a rice cooker according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a rice cooker according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a rice cooker according to a third embodiment of the present invention.

FIG. 4 is a sectional view of a conventional rice cooker.

[Explanation of symbols]

 1 Pan 2 Protective Frame 3 Seed Heater 4 Cooking Rice Heater 5 Upper Frame 6 Heat Shield Frame 6A Projection Providing on Heat Shield Frame 7 Body 8 Screw 9 Cordrill 9A Power Terminal 9B Co -Protrusions on the top of the drill

Claims (2)

[Claims] 1. A pot for pouring rice and water, a heater for heating the pot, a protective frame for housing the pot and the heater, and an upper frame made of synthetic resin for holding the upper end of the protective frame. A heat shield frame which is a hollow body and attached to the protection frame; and a synthetic resin body in which the opening of the top face and the upper frame are fitted and the bottom face is screwed to the bottom face of the heat shield frame at several points. The heat shield frame is provided with a cord reel located below the heat shield frame and having a power supply terminal portion on its upper surface, and the heat shield frame is located between the bottom surface of the heat shield frame and the cord reel and is higher than the height of the power supply terminal portion. An electric rice cooker made of a long, non-combustible material. 2. A pot for pouring rice and water, a heater for heating the pot, a protective frame for housing the pot and the heater, and a synthetic resin upper frame for holding the upper end of the protective frame. A heat shield frame which is a hollow body and attached to the protection frame; and a synthetic resin body in which the opening of the top face and the upper frame are fitted and the bottom face is screwed to the bottom face of the heat shield frame at several points. A cord reel is provided below the heat shield frame, and several screws for fixing the body to the bottom face of the heat shield frame have a distance between the tip of the head and the floor surface, and the cord reel. Electric rice cooker that is shorter than the distance between the upper end of the power supply terminal of the battery and the bottom surface of the heat shield frame.