JP4042653B2 - Induction cooker with touch keys - Google Patents

Description

  The present invention relates to a touch key having an electrode portion on a panel portion and an electric device such as an electromagnetic cooker using the touch key.

  Conventionally, this type of touch key is provided with electrode portions on both front and back surfaces of a panel portion made of an electrical insulator, and a capacitor is formed by the electrode portions on both surfaces and the panel portion (see, for example, Patent Document 1). .

This is the voltage when the high-frequency voltage is bypassed through the back electrode, panel, front electrode, and finger when the front electrode is touched with a finger, and the voltage appearing on the back electrode is not touched with the finger. It detects that it falls more and detects that the electrode part on the surface was touched.
Japanese Utility Model Publication No. 57-106152

  However, with such a conventional configuration, when a small animal such as a cat, a mouse, or a dog rides on the panel when there is no person, the touch key malfunctions by stepping on the surface of the touch key. There was a problem of letting it go.

SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide an electromagnetic cooker equipped with a touch key that suppresses malfunctions even when a small animal rides on a panel portion and steps on an electrode portion. It is.

In order to achieve the above object, an electromagnetic cooker equipped with a touch key of the present invention outputs a panel portion made of an electrical insulator, electrode portions provided on both front and back surfaces of the panel portion, and a voltage having a predetermined frequency. And an electrode provided on the surface of the panel unit, the oscillation unit for applying to the electrode unit provided on the back surface of the panel unit, and a detection unit for detecting the output voltage of the electrode unit provided on the back surface of the panel unit. The part is electrically divided into a plurality of grooves, and at the center of the electrode part provided on the surface of the panel part where the plurality of grooves intersect so that a person can touch and operate In this case, even if a position across the electrode portion provided on the surface of the panel portion divided into two by one groove is touched, it does not operate .

  As a result, even if a small animal rides on the panel unit and steps on the electrode unit, only a part of the electrode unit is grounded through the animal, and a predetermined capacitance change cannot be obtained, and therefore a predetermined voltage drop is obtained. Therefore, it is not considered that the touch key is touched, and malfunctions are suppressed. When a person touches, the touch is made on the divided electrode part, and the divided electrodes are integrated through the capacitance or resistance of the human finger. In addition, a predetermined capacitance can be obtained, and a touch key can be operated by obtaining a predetermined voltage drop.

As described above, the electromagnetic cooker equipped with the touch key of the present invention is formed by electrically dividing the electrode part provided on the surface of the panel part into a plurality of parts, so that a small animal can ride on the panel part and place the electrode part on the panel part. Even if it is stepped on, only a part of the electrode part is grounded through the animal, and a predetermined capacitance change cannot be obtained. Therefore, a predetermined voltage drop cannot be obtained, and it is not considered that the touch key is touched, and malfunction is suppressed. When a person touches, the electrodes can be touched on the divided electrodes, and the divided electrodes can be integrated through the capacitance of the finger of the person or resistance to obtain a predetermined capacitance. The touch key can be operated by obtaining the voltage drop.

In addition, equipped with electric magnetic cooker the touch key of the present invention are those that can be at ease even when there are no people, and is convenient to use.

According to one aspect of the present invention, the panel portion made of electrically insulating material and an electrode portion provided on both sides of the panel portion, the electrode portion outputs a voltage of a predetermined frequency provided on the back surface of the panel portion And a detection unit for detecting an output voltage of the electrode unit provided on the back surface of the panel, and the electrode unit provided on the surface of the panel unit is electrically divided into a plurality of grooves. In addition to being formed in a divided manner, the position where the plurality of grooves that allow a person to touch and operate is substantially the center of the electrode part provided on the surface of the panel part, and is divided into two by one groove. Even if a small animal rides on the panel unit and steps on the electrode unit by using an electromagnetic cooker equipped with a touch key that does not operate even when touching a position across the electrode unit provided on the surface of the panel unit , Part of the electrode part through the animal It is not possible to obtain a predetermined change in capacitance, and therefore a predetermined voltage drop cannot be obtained, and it is not considered that the touch key has been touched, and malfunctions are suppressed. Touch the electrode part and integrate the divided electrodes through the capacitance or resistance of a human finger to obtain a predetermined capacitance and obtain a predetermined voltage drop to operate the touch key It is something that can be done.

  Further, it is possible to easily detect a touch by a person while suppressing a malfunction caused by a small animal.

According to the second aspect of the present invention, the position of the plurality of grooves that allow a person to touch and operate is changed to the substantially center of the electrode portion provided on the surface of the panel portion. The touch key according to claim 1, wherein the center of the electrode portion provided on the touch panel is removed, the malfunction of the small animal is further suppressed due to the shift of the touch position, and the operability of the touch by the human is It can be easily detected without damage.

According to a third aspect of the present invention, there is provided the touch key according to the second aspect , wherein a touch mark set to be smaller than an area of the finger to be touched is provided on the electrode portion provided on the surface of the panel portion, which indicates a position to touch with the finger. By doing so, it is possible to improve the operability by visual recognition and easy to detect while touching by a human being while suppressing malfunctions caused by small animals.

  Embodiments of the present invention will be described below with reference to the drawings.

( Reference Example 1)
FIG. 1 shows a touch key in Reference Example 1 of the present invention.

  As shown in the figure, the panel portion 1 is made of an electrical insulator such as glass or plastic, and has an electrode portion 2 on the front surface and an electrode portion 3 on the back surface. The electrode portion 2 is for touching with a finger 6 and is divided into two electrodes 2 a and 2 b by a groove 7. The entire width of the groove 7 is set smaller than the width touched by the finger 6. The oscillating unit 4 generates a high-frequency voltage and applies the high-frequency voltage to the electrode unit 3 through a contact electrode 3 a that contacts the electrode unit 3. The detection unit 5 detects a voltage when the electrode unit 3 is touched with a finger 6.

  The capacitor composed of the electrode 2a and the electrode part 3 or the electrode 2b and the electrode part 3 has a small capacitance because the area of the electrodes 2a and 2b is small, and the oscillation part 4 can be applied even if the electrodes 2a and 2b are touched individually. The high-frequency voltage from is not attenuated so much and the detection unit 5 does not recognize that the touch has been made. On the other hand, when the groove 7 portion of the electrode part 2 is touched with the finger 6, the electrodes 2a and 2b are short-circuited by the capacitance or resistance of the finger 6, so that the area of the electrode part 2 is the sum of 2a and 2b. The capacitance value of the capacitor formed by the unit 3 increases. Accordingly, the high-frequency voltage from the oscillation unit 4 is sufficiently attenuated by touching the groove 7 with the finger 6, and the detection voltage at the detection unit 5 increases the difference between the voltage when not touched and the voltage when touched. It is recognized that 2 is touched.

  By configuring in this way, even if a small animal rides on the panel unit 1 and steps on the electrode unit 2, only a part of the electrode unit 2 is grounded through the animal, and a predetermined capacitance change cannot be obtained. Therefore, a predetermined voltage drop cannot be obtained, and it is not considered that the touch key is touched, and malfunction is suppressed. In addition, when a person touches, the divided electrode part 2 is touched, and the divided electrodes are integrated through the capacitance of a human finger, or resistance, and a predetermined capacitance can be obtained. The touch key can be operated by obtaining a predetermined voltage drop.

( Reference Example 2)
Next, FIG. 2 shows an electrode portion of a touch key in Reference Example 2 of the present invention. The same elements as those in Reference Example 1 are denoted by the same reference numerals, and description thereof is omitted.

As shown in the figure, the groove 7 of the electrode portion 2 in this reference example is such that a portion that is not touched by a person is wide, a portion 8 that is touched by a person is narrow, and is equal to or smaller than the width of a finger touched by a person.

  By comprising in this way, the touch by a person can be made easy to operate and easy to detect, suppressing the malfunctioning by a small animal.

(Example 1 )
Next, FIG. 3 and FIG. 4 show the electrode part of the touch key in Example 1 of the present invention. The same elements as those in Reference Example 1 are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIG. 3, the groove 7 of the electrode part 2 in a present Example is provided in the shape of two crosses, and the electrode part 2 is formed into 4 divisions (electrode 2a-2d), and the position where several groove | channels 7 cross | intersect is shown. This is the center of the electrode part 2. And when a person touches, the part 9 which the groove | channel 7 cross | intersects is touched, and the four electrodes 2a-2d are integrated with the finger | toe 6. FIG. Moreover, even if a small animal touches across one groove, the touch key does not operate.

  By comprising in this way, the touch by a person can be operated easily and can be detected easily, suppressing the malfunctioning by a small animal.

  Further, in the configuration shown in FIG. 4, the width of the groove 7 of the portion 10 touched by the person is narrow, and the width of the groove 7 is widened in the portion not touched by the person. In this configuration, there is a possibility of malfunction by a small animal. Is even smaller and makes it easier for people to operate.

(Example 2 )
Next, FIG. 5 shows an electrode part of a touch key in Example 2 of the present invention. The same elements as those in Reference Example 1 are denoted by the same reference numerals, and description thereof is omitted.

  As shown in the figure, a plurality of grooves 7 of the electrode part 2 in this embodiment are provided, and the electrode part 2 is divided into a plurality of parts (electrodes 2a to 2f), and when the person touches, the groove 7 intersects. The part 11 to be made is a position where the center of the electrode part 2 is removed and moved to one side.

  With this configuration, normally, when a person touches the electrode unit 2, the center part is touched, but the touch position is misaligned, so that malfunctions caused by small animals are further suppressed, and the operability of touch by a person is reduced. Can be easily detected without damage.

( Reference Example 3 )
Next, FIG. 6 shows an electrode portion of a touch key in Reference Example 3 of the present invention. The same elements as those in Reference Example 1 are denoted by the same reference numerals, and description thereof is omitted.

As shown in the drawing, the electrode part 2 in this reference example is provided with a hole 12 at a position where the finger 6 touches. The size of the hole 12 is set smaller than the size of the portion 13 touched by the finger 6.

  With this configuration, when the person touches, the hole 12 is touched, the hole 6 is closed with the finger 6, and the area of the electrode portion 2 is ensured. When the person does not touch, the electrode part 2 is in a state where the hole 12 is provided, so that the electrode part 2 cannot obtain a predetermined area and does not operate even if a small animal touches the electrode part 2. Accordingly, it is possible to improve the touch operability by a person and easily detect a malfunction while suppressing malfunction caused by a small animal.

(Example 3 )
Next, FIG. 7 and FIG. 8 show the electrode part of the touch key in Example 3 of the present invention. The same elements as those in Reference Example 1 are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIG. 7, the electrode unit 2 in the present embodiment is provided with a touch mark 14 at a place where a person should touch, and can be reliably operated by touching the touch mark 14. Note that the touch mark 14 is set to be smaller than the area of the finger to be touched to improve the operability and detection of touch by a person.

  By comprising in this way, the malfunction by a small animal can be suppressed, and the touch by a person can improve operability by visual recognition, and can be easily detected.

In addition, although the case where the touch mark 14 was provided in the cross | intersection part of the groove | channel 7 of the electrode part 2 shown in Example 1 was shown, the electrode part 2 is made into a transparent electrode etc. at this time, and it is a touch mark visible to human eyes. Only 14 may be considered in terms of design. Moreover, as shown in FIG. 8, you may make it easy to use using the touch mark 15 containing the character which shows the function of a touch key. Furthermore, not only the configuration of the first embodiment but also the touch portion 14 or 15 according to each embodiment may be provided with the touch mark 14 or 15 for easy use.

(Example 4 )
Next, FIG. 9 shows an electrical apparatus equipped with a touch key according to Embodiment 4 of the present invention. The same elements as those in Reference Example 1 are denoted by the same reference numerals, and description thereof is omitted.

  As an electric device in the present embodiment, an electromagnetic cooker 27 is illustrated. The panel portion 1 of the electromagnetic cooker 27 is equipped with four-divided touch keys 19, 20, and 21.

  When the touch key 19 is set to decrease the set temperature, the touch key 20 is turned on / off, and the touch key 21 is set to increase the set temperature, the power is turned on even if there is no person and the small animal gets on the panel 1. Alternatively, it is possible to provide an electromagnetic cooker that is not dangerous such as raising the set temperature, and that does not malfunction such as turning off the power by a small animal or lowering the set temperature. That is, it is possible to use an electric appliance such as an electromagnetic cooker safely and conveniently even when there is no person.

  In addition to preventing malfunctions caused by small animals, water or juice may spill during cooking, and even if you touch any electrode, the temperature may rise or fall, and the power may turn off or turn on. It can provide a few safe and easy-to-use electromagnetic cookers.

Side view of touch key in Reference Example 1 of the present invention The top view of the electrode part of the touch key in the reference example 2 of this invention The top view of the electrode part of the touch key in Example 1 of this invention The top view of the electrode part which shows the other structure of the same touch key The top view of the electrode part of the touch key in Example 2 of this invention The top view of the electrode part of the touch key in the reference example 3 of this invention The top view of the electrode part of the touch key in Example 3 of this invention The top view which shows the other touch mark in the same touch key The top view which shows the electric equipment in Example 4 of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Panel 2, 3 Electrode part 2a-2f Electrode 4 Oscillation part 5 Detection part 7 Groove 14, 15 Touch mark

Claims (3)

A panel unit made of an electrical insulator, electrode units provided on both front and back surfaces of the panel unit, an oscillation unit for outputting a voltage of a predetermined frequency and applying the voltage to an electrode unit provided on the back side of the panel unit, and the panel A detection unit that detects an output voltage of the electrode unit provided on the back surface of the unit, and the electrode unit provided on the surface of the panel unit is electrically divided into a plurality of grooves and a plurality of grooves. The position where the plurality of grooves intersecting to be able to operate by touching is substantially the center of the electrode part provided on the surface of the panel part, and is provided on the surface of the panel part divided into two by one groove. An electromagnetic cooker equipped with touch keys that do not work even if you touch a position that straddles the electrodes . The center of the electrode part provided on the surface of the panel part is removed from the position where the plurality of grooves intersecting for human touching can be changed to the substantially center of the electrode part provided on the surface of the panel part. An electromagnetic cooker equipped with the touch key according to claim 1, wherein the cooker is in the position . The electromagnetic cooker equipped with the touch key according to claim 2 , wherein a touch mark set smaller than an area of the finger to be touched is provided on an electrode portion provided on the surface of the panel portion, which indicates a position to touch with a finger .

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