JPS60150719A - Cooker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a safety device for cooking appliances used in general households.

Conventional Structure and Problems Conventionally, in this type of safety device for a cooking device, as shown in FIG.
A hot plate 3 is placed on the inner bottom of the outer pot 2, an inner pot 4 is placed on the hot plate 3 inside the outer pot 2, and a case 5 is placed on the hot plate 3 so as to protrude below the outer pot 2. Insert the spring 6 inside the case 5.
A movable plate 8 with a lever 7 fixed thereto is provided on the upper surface of the case 5 and the spring 6. In addition, a safety switch base 9 is generally fixed to the lower part of the outer pot 2, a safety switch 10 is fixed to the safety switch base 9, and a safety switch lever 11 of the safety switch 10 is fixed to the lever 7. . To explain this structure, when the pot is not stored in the main body, or if it is incomplete, the moving plate is pushed up by the spring, and the lever moves to one side. At this time, the safety switch lever attached to the lever tilts upward, pressing the safety switch button and opening the electric circuit.

When the pot is completely set in the main body, the moving plate is pressed downward and the lever also moves downward.

At this time, the safety switch lever attached to the lever tilts downward and separates from the safety switch button, closing the electric circuit. With this configuration, when the pot is not stored or is incomplete, the electric circuit is opened, thereby preventing cooking problems due to overheating of the hot plate or partial contact between the pot and the hot plate.

However, in this configuration, when the hot plate generates heat during cooking, the safety switch attached to the outer pot via the safety switch stand is rapidly heated by heat conduction. This safety switch is often an electronic component and is thermally weak, and generally has a temperature limit of about 80°C. Therefore, it has become necessary to thermally protect this safety switch or to reduce the amount of heat from the hot plate. In the former case, it was expensive, and in the latter case, cooking performance deteriorated. Blue, if the oneba etc. generated during cooking flow into the outer pot,
It adhered to the safety switch, making its operation uncertain. Therefore, there is a problem in that the operational performance of the security device cannot be guaranteed for a long period of time.

OBJECTS OF THE INVENTION The present invention solves the problems of the prior art as described above, and provides a cooking appliance that improves the cooking performance and the operational performance of the safety device.

Structure of the Invention A 1+4 cooking appliance of the present invention includes a cooking device main body, a pot housed in the main body, a lever that moves mechanically when the pot is housed, and a board that controls cooking. The lever is connected to a switch placed on the board to close the electric circuit when the pot is stored in the main body. With this configuration, the electric circuit is closed only when the pot is completely stored in the main body. is closed, and the switch is separated from the outer pot on which the hot plate is placed, so even when the hot plate is heated, the temperature rise is small, and it operates stably over a long period of time. Even in such a case, it will not stick to the switch, and stable cooking performance and operation performance of the safety device can be obtained.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 2, 12 is the cooking device main body, 13 is a cylindrical outer pot with a bottom fixed to the cooking device main body at the negative part;
14 is a hot plate placed on the inner bottom of the outer pot 13, 15 is an inner pot placed on the hot plate 14 inside the outer pot 13, and 16 is a hole in the center of the hot plate 14 for the outer pot 13. 17 is a spring installed inside the spring case; 18 is a disc-shaped movable plate attached to the top surface of the spring 17; 19 is a movable A moving lever is fixed to the center of the plate 18, 20 is a display plate fixed to the side of the cooker body and displays the process of rice cooking, 21 is a board for controlling or displaying the rice cooking operation, and 22 is placed on the base rice 21. The microswitch 23 is a switch lever that is connected to the moving lever 19 and turns the microswitch ON and OFF.

To explain the operation in the configuration described in I-, when the inner pot is not placed on the hot plate or when the inner pot is not in close contact with the hot plate, the movable plate is pushed up by the spring and moves in the same way. The lever has also moved upward.

At this time, the switch lever connected to the movable lever rotates using the microswitch's protrusion as a fulcrum and tilts downward to press the button of the microswitch and open the electric circuit on the board.

On the other hand, if the inner pot is placed in close contact with the hot plate, the movable plate will move downward together with the inner pot. Similarly, the moving lever also moves downward. At this time, the switch lever connected to the moving lever rotates using the top of the microswitch as a fulcrum,
When the inner pot comes into close contact with the hot plate, release the microswitch button and close the electrical circuit on the board. Therefore, the heating plate is heated only when it is in close contact with the inner pot, which eliminates cooking problems due to incomplete section of the inner pot, or abnormal overheating due to energization without the inner pot. On the other hand, since the microswitch is mounted on the board, its temperature rise is small and stable performance can be obtained over a long period of time, and even if the contents flow into the bottom of the outer pot, it will not stick to the microswitch. Accurate operation can be obtained.

Effects of the Invention As is clear from the above embodiments, the cooker of the present invention has a switch mounted on the circuit board, so that the safety device can operate stably over a long period of time, improving cooking performance and ensuring safety. It is possible to improve the operating performance of the device/')n

[Brief explanation of drawings]

FIG. 1 is a partial cross-sectional view showing a conventional cooking device, and FIG. 2 is a partial cross-sectional view of a food processor according to an embodiment of the present invention. 12. Cooker body, 16. Pot, 19...
Lever, 21... Board, 22... Switch. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 (2)

Claims (1)

[Claims] It has a cooking device main body, a pot stored in the main body, a lever that moves mechanically when the pot is stored, and a board that controls cooking, and the lever is connected to a switch placed on the board. A cooking appliance characterized in that the steel closes an electric circuit when the steel is housed in the main body.