JP4168917B2 - Cooker using touch keys - Google Patents

Description

The present invention relates to a cooking device using a touch key over for use in various devices.

  Conventionally, as a touch key used in a cooker, an electrode part is provided on both front and back sides of a panel part made of an electrical insulator such as glass, and a capacitor is formed by the electrode part and the panel part on both the front and back sides. (For example, refer to Patent Document 1).

This is to apply the high frequency voltage generated from the oscillation part to the electrode part on the back of the panel part, and when the electrode part on the panel part surface is touched with a finger, the high frequency voltage is bypassed through each electrode part, the panel part, the finger, The detection unit detects that the voltage appearing at the electrode part on the back of the panel part is lowered, and knows the touch of the electrode part.
Japanese Utility Model Publication No. 57-106152

  However, the conventional configuration requires one oscillating unit and one detecting unit for each touch key, and there is a problem in that the circuit of the device is complicated.

The present invention is the one that solves the conventional problem, even if the number of keys is not necessary to increase the number of detection portions and the oscillating unit, provide a cooker with a touch key over the circuit construction can be simplified The purpose is to do.

In order to solve the above-described conventional problems, a cooker using a touch key according to the present invention includes a panel portion made of an electrical insulator, electrode portions facing the front and back surfaces of the panel portion, and a predetermined frequency. an oscillator for outputting a voltage applied to the electrode portion provided on the rear surface of the panel portion, and a detector for detecting an output voltage of the electrode portions, the electrode portion provided on the surface of the panel portion and plural electrode portion provided on the back surface, in which the opposing area formed between the electrode portions of the surfaces provided one over a plurality of electrode portions of the surface is arranged so as to differ from each other .

  Thereby, even if the number of keys increases, it is not necessary to increase the number of oscillation units and detection units, and the circuit configuration can be simplified.

  In addition, by using the cooker using the touch key of the present invention, the circuit configuration can be simplified, a compact cooker can be obtained, and safety and usability can be improved.

  The touch key of the present invention and the cooker using the touch key can simplify the circuit configuration because it is not necessary to increase the number of oscillation units and detection units even if the number of keys increases.

A first invention is a panel unit made of an electrical insulator, an electrode unit provided opposite to both the front and back surfaces of the panel unit, and an electrode unit provided on the back surface of the panel unit that outputs a voltage of a predetermined frequency. an oscillator to be applied to, and a detector for detecting an output voltage of the electrode portions, the electrode portion provided on the surface of the panel portion is equal areas of each electrode portion area and a plurality, provided on the back surface Even if the number of keys is increased by providing one electrode portion across the plurality of electrode portions on the surface and arranging the opposing areas formed between the electrode portions on the surface to be different from each other, It is not necessary to increase the number of oscillation units and detection units, and the circuit configuration can be simplified.

The counter plurality of electrode portions provided on the surface of the panel portion, each electrode portion area with the same area, the electrode portion provided on the rear surface of the panel portion is formed between the electrode portions of the panel section surface By arranging so that the areas are different, the initial value of the capacitance of the capacitor formed by the electrode portion can be changed, and a plurality of keys having the same shape can be discriminated.

Further, with the cooker with data Tchiki, circuit configuration can be simple, compact cooker is obtained, the safety, it is also possible to enhance the usability.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 and 2 show the configuration of the touch key according to Embodiment 1 of the present invention.

As shown in the figure, the electrode part 2, 3 is opposed to the surface of the panel part 1 made of an electrical insulator such as glass or plastic, and the electrode part 2, 3 is opposed to the electrode part 2, 3 on the back side. An electrode unit 4 is provided. In other words, the electrode part 4 on the back surface of the panel part 1 has an area overlapping the electrode parts 2 and 3 on the front surface with the panel part 1 interposed therebetween. The electrode parts 2 and 3 serve as touch key keys. The electrode part 2 and the electrode part 4 or the electrode part 3 and the electrode part 4 constitute a capacitor. The capacitance of the capacitor changes when the electrode portion 2 or 3 is touched with the finger 5. The electrode unit 4 is connected to an oscillation unit 6 that outputs and applies a voltage having a predetermined frequency, and a detection unit 7 that detects the output voltage of the electrode unit 4.

  Therefore, when the electrode unit 2 or 3 is touched, the high frequency voltage from the oscillation unit 6 is sufficiently attenuated by the finger 5, and the voltage difference between when the detection unit 6 is touched and when the detection unit 6 is not touched increases. It is recognized that the part 2 or 3 is touched.

  As described above, the touch key according to the present embodiment is provided with the plurality of electrode portions 2 and 3 on the front surface of the panel portion 1, and the electrode portion 4 provided on the back surface extends across the plurality of electrode portions 2 and 3 on the front surface. Thus, even if the number of keys increases, it is not necessary to increase the number of oscillation units 6 and detection units 7, and the circuit configuration can be simplified. Note that the number of electrode portions 2 and 3 is not limited to two, and more electrode portions may be provided.

(Embodiment 2)
3 and 4 show a touch key according to Embodiment 2 of the present invention. The same elements as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted.

  In the present embodiment, when the electrode portion 2 or 3 is touched with the finger 5, the initial value of the capacitance of the capacitor formed by the electrode portion is changed in order to distinguish a plurality of keys.

  FIG. 3 shows a case where the areas of the electrode part 2 and the electrode part 3 are changed. Since the capacitance is determined by the area of the opposing electrode part, the area of the electrode part 3 facing the electrode part 4 is made smaller than that of the electrode part 2 so that the electrostatic capacity is reduced. The same applies even if the electrode portion 2 is made smaller than the area of the electrode portion 3. Thereby, the touch key can be identified based on the difference in capacitance.

  4 (a) and 4 (b) show that the size of the electrode part 4 on the back surface is smaller than that in FIG. 3, and even if the area of the electrode parts 2 and 3 on the surface of the panel part 1 is the same, Since the facing area with the electrode portion 4 is different, the capacitance is different, and the touch key can be identified.

  As described above, the touch key according to the present embodiment can change the initial value of the capacitance of the capacitor formed by the electrode portion, and can identify a plurality of keys.

( Reference form 1 )
Figure 5 shows a touch key in Reference Embodiment 1 of the present invention. The same elements as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted.

In the present reference, a hole 2a provided in the touch location of the electrode portion 2, when the finger 5 touches, to block the touch portion and the hole 2a of the hole 2a, it is possible to determine the key. Moreover, when the person does not touch, the electrode part 2 has a hole 2a, and thus the electrode part 2 cannot obtain a predetermined area. However, even if the finger is inadvertently touched or a small animal in the home touches it. It is safe. In addition, the presence of the hole 2a can be a touch key that is easy to operate enough for human operation.

The size of the hole 2a is set to be smaller than the size of the surface to be touched by the finger 5, thereby improving the reliability of the touch key.

  In addition, it is possible to provide a hole not only in the electrode part 2 but also in the electrode part 3, and in that case, consideration can be given such as changing the size of the hole.

Thus, the touch key in this reference embodiment, by providing the hole in the electrode unit, the operating person can provide adequate operation reagent, reliable touch keys.

( Reference form 2 )
6 shows a touch key in Reference Embodiment 2 of the present invention. The same elements as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted.

In the present reference, a touch mark 2b on each touch location of the electrode portions 2 and 3 provided on the surface of the panel portion 1, 3b and provided, each touch mark 2b, 3b is its position in the electrode portions 2 and 3 It is different.

Thus, the touch key in this reference embodiment, each touch mark 2b of the electrode portions 2 and 3, by having different 3b position, the electrode portions 2 and 3 have the same capacitance in the same area However, the change in capacitance is different, and a plurality of keys can be discriminated.

( Reference form 3 )
Figure 7 shows a touch key in Reference Embodiment 3 of the present invention. The same elements as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted.

In the present reference electrode 2 provided on the surface of the panel portion 1 is obtained by dividing formation. In the present reference embodiment shows an example in which the electrode portions 2 4 split, but is not limited thereto. Moreover, the electrode part 3 can also be formed separately.

Thus, the touch key in this reference embodiment, by dividing forming the electrode portion, or touch inadvertently electrode portions, even or touch the small animal electrode portions in the home without some people, There is little possibility of touching the entire divided electrode part, and it is safe without simply turning on the device or raising the set temperature. Further, when the touch key is used in a cooking device, even if water or juice spills during cooking and touches the electrode portion, the device can be used safely without adversely affecting the device.

(Embodiment 3 )
FIG. 8 shows a cooking device according to Embodiment 3 of the present invention.

In this embodiment, any one of the touch keys shown in Embodiments 1 and 2 and Reference Embodiments 1 to 3 is used for a cooking device. That is, in the example shown in the figure, the cooker main body 6 includes two induction heating units 7 and 8 on the panel unit 9 and touch keys 10, 11, and 12 having any one configuration shown in each embodiment. The electromagnetic cooker with these is shown. The touch key 11 has a function of lowering the set temperature, the touch key 12 is turned on / off, and the touch key 13 has a function of raising the set temperature.

As described above, the cooker according to the present embodiment has a simple circuit configuration by using the touch key having any one of the configurations shown in the first and second embodiments and the first to third embodiments for the cooker. Therefore, a compact cooker can be obtained, and safety and usability can be improved.

  As described above, the touch key and the cooker using the touch key according to the present invention do not need to increase the number of oscillation units and detection units even if the number of keys increases, and thus the circuit configuration can be simplified. The present invention can also be applied to equipment, particularly equipment having a flat panel such as an electromagnetic cooker.

Side sectional view of a touch key according to Embodiment 1 of the present invention. Plan view showing electrode configuration of the touch key The top view which shows the electrode part structure of the touch key in Embodiment 2 of this invention (A) Plan view showing another electrode configuration of the touch key (b) Same side sectional view The top view which shows the electrode part structure of the touch key in the reference form 1 of this invention The top view which shows the electrode part structure of the touch key in the reference form 2 of this invention The top view which shows the electrode part structure of the touch key in the reference form 3 of this invention The top view which shows the cooking device in Embodiment 3 of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 9 Panel part 2-4, 10-12 Electrode part 2a Hole 2b, 3b Touch mark 6 Oscillation part 7 Detection part

Claims (1)

A panel portion made of an electrical insulator, an electrode portion provided opposite to both the front and back surfaces of the panel portion, and an oscillation portion for outputting a voltage of a predetermined frequency and applying it to the electrode portion provided on the back surface of the panel portion; , and a detector for detecting an output voltage of the electrode portion, the electrode portion provided on the surface of the panel portion is equal areas of each electrode portion area as a plurality, electrode portion provided on the back surface, said surface A cooker using touch keys provided across one of the plurality of electrode portions and arranged such that opposing areas formed between the electrode portions on the surface are different from each other .

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