JPS5819627A - Locking method for control key for heating device - Google Patents

Abstract

PURPOSE:To improve safety of a cooking control, by a method wherein a heating cooker with built-in microcomputer is constituted such that setting of cooking information and cooking start are made by inputting of numerals or numeral train stored in a microcomputer. CONSTITUTION:Under a condition that a lock state display status 19 is lighted through closing of a power source, a lock release number register key 20 is inputted to input an arbitrary numeral or numeral train to a microcomputer. The lock release number register key 20 is then inputted to store a lock release number in the microcomputer. This cause lighting off of the lock state display lamp 19 and bring the lamp 19 into a holding state for a cooking information input. High-frequency output information 8a-8c, and cooking times 9a-9j are then inputted, and with a start button 10 depressed, a cooking starts. During a given period of time after a cooking is completed, the lock state display lamp 19 continues to light off and is prevented from locking. After a specified time has elapsed, the lamp 19 is locked, and locking is not released unless the stored lock release number is inputted, which results in improving safety.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for locking operation keys of a heating cooker, etc., and relates to a soft lock method using a microcomputer.

Advances in semiconductor technology have led to the emergence of automatic cooking appliances, and have simplified the complicated operating procedures of conventional mechanical systems to the point where they can be operated with a single switch.

In this way, it is very important for users to be able to operate easily, but conversely, it means that anyone can operate it easily. This can be said to include the risk that a child might start moving just by touching the operation key.In particular, microwave ovens and the like generate high voltage, so there is a possibility that they could be dangerous. From the above point of view, it is necessary as a safety measure to not allow people who do not know how to properly use a cooker to use it.

Hereinafter, a conventional example of a method of locking an operation key will be explained with reference to FIG. Figure 1 shows only the operation panel of the microwave oven, where 1 is the display tube, 2 is the key for selecting the type of high-frequency output, 3a and 3b are the keys for inputting the cooking time, 4 is the cooking start key, and 6 is the cooking stop key. 6 is a lock switch of the operation key. In Fig. 1, the lock switch 6 is located on the lock side (marked as lock in the figure).
In this state, the high frequency output type selection key 22, the time setting keys 31L, 3b, and the start key 4 are not effectively activated and are all ignored.

In other words, the microcomputer monitors the state of the lock switch 6, and if it detects that the lock switch 6 is on the lock side, it ignores all inputs from other operation keys.

On the other hand, by switching the mechanical switch as described above,
Regarding the configuration of the present invention that attempts to lock and release operation keys using software by fully utilizing a microcomputer,
This will be explained below.

FIG. 2 is an external perspective view of the high-frequency heating device constructed according to the present invention. The operation panel 7 has keys for setting the high-frequency output, including a strong output key 81L, a medium oyster key 8b
Three types of output can be set using the weak output key 8C.

Also, as a cooking time input, 1 from 9& to 9j
There are 0 keys provided. In addition, cancel key 1 is used to cancel the input set using the above keys.
2. Cooking start button key for inputting the start of cooking 10.
There is a key 11 for interrupting cooking in progress. If the status 16, which displays the cooking time and high frequency output type set using the input key page 6 above, is lit, the fluorescent display tube 13 indicates that the low power is set f'LfC, and the status is displayed. If status 17 is lit, it will indicate that medium power is set, and if status 18 is lit, it will display the vehicle weight with high power set.

14 is a key for setting the current time, and when this key is pressed
The time information 9a to 9j input after the time is processed as current time information. Reference numeral 16 denotes a speaker which outputs the voice synthesized by the synthesizer t'.

On the other hand, the status 19 displays whether or not the operation keys described above are in the locked state, and if lit, the status is in the locked state. In this state (when the status 19 is lit), even if there is any key input other than numbers (or number strings) stored in advance in the microcomputer, the input will be invalid.

First, we will explain how to set the number (number string) for releasing the lock state. When the power is fully turned on, the lock state display status 19 lights up as shown in FIG. Subsequently, as shown in FIG. 3 (IL), the lock state release number registration key 20 is input. and in Figure 3)
Input any number (or string of numbers) into the microcontroller as shown. At this time, the numerical keys from 9a to 9j are used. As an example, let us assume that you input a three-digit number string 112. After that, as shown in Fig. 3(C), by inputting the lock state release number registration key 20 again, the above 112 is registered and stored in the microcomputer as a numerical input for releasing the lock state. It is. Also, at this time, the lock state display status 19, which had been lit up until now, has melted in oil, indicating that it is in a standby state to accept setting input of cooking information. Therefore, as cooking information, type f8 of high frequency output! The user inputs the information using the L, sb, or 8C keys, sets the cooking time using the numerical keys 9a to 9j, and presses the start button key 10 to start cooking.

Thereafter, after the set time has elapsed and cooking is completed, the lock remains unlocked for a certain period of time (for example, 16 minutes), so the lock status display status 19 remains off, and the next cooking Waiting for information input 7. However, if no cooking information is input even after the predetermined period of time has elapsed, the operation keys shift to a locked state and the lock state display status 19 lights up again. After this, if you want to input cooking information, first input the numbers (number string) registered and memorized in the microcomputer before setting the cooking information (high frequency output and cooking time), and then lock the operation keys. The situation must be resolved or it must be destroyed.

Therefore, in this case, the procedure is to input the previously registered number string 112, so the number keys 9&
Press to input '1', press 9 & all the way again to input 11', then press 9 & to input 'S'. at this point
The lock status display status 19, which was lit, went out.
To clearly indicate that the locked state of an operation key has been released, and at the same time notify this with a buzzer or the like.

In addition, if a cooking information setting key other than the registered number (column) mentioned above is pressed while the lock state display status 19 is lit, the user will be notified by voice that the operation key is in the locked state. The user will be guided and prompted to complete the procedure for unlocking the lock key.

On the other hand, if you do not need to lock the operation keys, when you perform the lock state release number registration operation described at the beginning, you can enter all the lock state release number registration keys without entering numbers, and from then on, the new lock state will be released. The operation key lock will not operate until the number is registered.

Furthermore, if the user forgets the previously registered lock state release number or wishes to change it, the operating procedure is to first input the lock state release number registration key and then input the cancel key 12. This allows you to unlock the operation keys, and then enter the new release number in its entirety and register it in the microcomputer.

Of course, regarding the above operating procedure, there are only 9 pages of examples. It's nothing but what I said.

As described above, according to the present invention, the operation key lock system can be made into a soft lock system using a microcomputer, instead of a simple switching operation using a switch as in the conventional case.

Therefore, it is extremely safe for people such as children who do not know the correct operating procedures to operate the high frequency cooking device.

In addition, once the operation keys are locked, if no new cooking information is set after a certain period of time after cooking is finished, the microcomputer will determine this and automatically lock the operation keys again. Since the device is designed to return to its original state, the user does not have to take the trouble to operate it.

Furthermore, the user is informed and guided by voice that the operation key is in the locked state, which has the effect of reducing the user's sense of anxiety or the feeling that the operation is complicated.

As described above, the software-based operation key locking system of the present invention dramatically improves the safety of heating cookers used in general households, such as high-frequency heating devices.

[Brief explanation of the drawing]

Fig. 1 is a front view of an operation panel showing a conventional operation key locking mechanism, Fig. 2 is a perspective view of a high-frequency heating device embodying the present invention, and Figs. 3 a, b, and c are locks of the same high-frequency heating device. It is a figure explaining the registration procedure of a state release number. 7... Operation panel, 8 &... Overhanging oyster-18b... Offered oyster-18C... Weak oyster-11o... Start Button, 11...
... Stop key, 12 ... Cancel key, 13 ... Fluorescent display tube, 16°17.18.
19...Stitus. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
Ill (α) (b) (C)

Claims (1)

[Scope of Claims] (1) A heating chamber that accommodates an object to be heated, a heating means coupled to this heating chamber, a microcomputer (hereinafter abbreviated as microcomputer) for controlling this heating means, and this microcomputer. is equipped with an input means for inputting cooking information such as cooking items and cooking time, and a display means for displaying the input cooking items and cooking time, etc., and the setting of cooking information to the microcomputer and the start of cooking are performed by: One of the unambiguous keys in the heating device 1 is X<. @) The soft lock of the operation keys released by the above operation will be disabled if new cooking information settings are not made continuously for a certain period of time after cooking is completed, or if the next setting is made while cooking information is being set. State p without input; Claim 1 in which the state returns to the locked state again if the state continues for a certain period of time
The locking method for the operation key of the heating device described in Section 1. (3) The method of locking the operating keys of the heating device according to claim 1, further comprising a display device that clearly indicates the locked state of the operating keys. (4) A display unit and a voice synthesis unit are provided as means for notifying the locked state of the operating keys, and when the operating keys are in the locked state and there is an input other than the operating input to release the locked state, the operating keys are locked. A locking method for an operation key of a heating device according to claim 1, wherein the operating key of the heating device is notified and guided by voice.