JP4168969B2 - Cooker using touch keys - Google Patents

Description

The present invention relates to a cooking device using touch keys provided on a flat panel portion of various devices, particularly a device having a flat panel of a cooking device such as an electromagnetic cooking device.

Conventionally, this type of touch key (for example, Patent Document 1) shown in FIGS. 11, 12, and 13 has been proposed. FIG. 11 is a block diagram of a touch key, and 7 is a flat electrical insulator panel such as glass. Reference numerals 27 and 28 denote electrode portions provided at positions facing the panel portion 7, and the electrode portions 27 and 28 and the panel portion 7 form capacitors. The oscillation unit 1 generates a high frequency voltage and applies the high frequency voltage to the electrode unit 27 through the contact electrode unit 24 that contacts the electrode unit 27. When the opposing electrode part 28 is touched with the finger 8, the high frequency voltage is bypassed through the electrode part 27, the panel part 7, the electrode part 28, and the finger 8, and the voltage appearing at the electrode part 27 is lower than the voltage when not touching with the finger. This is detected by the detection unit 33. The detection unit 33 converts the input high-frequency voltage into a DC voltage, and outputs a high DC voltage to the control unit 36 when the electrode unit 28 is not touched and a low DC voltage when the electrode unit 28 is touched. The control unit 36 determines that the electrode unit 28 has been touched when the input voltage decreases by a predetermined value or more.

  When there are a plurality of touch keys, for example, FIG. 11 shows a case where there are three touch keys (comprising electrode portions 27 and 28, electrode portions 29 and 30, and electrode portions 31 and 32). The output of the transmitter 1 is applied to the electrodes 27, 29, and 31, and the outputs of the electrodes 27, 29, and 31 are input to the detector (1) 33, the detector (2) 34, and the detector (3) 35, respectively. Then, each electrode unit output voltage is detected, converted into a DC voltage, and output to the control unit 36. The control unit 36 calculates the output voltage of each electrode unit, determines which touch key is lower than a predetermined voltage, and determines which touch key is touched. Further, when it is determined which touch key is touched, the heating means 37 constituted by a heater, a display device, etc. is controlled according to the function assigned to the touch key.

  FIG. 12 is a diagram illustrating the output voltages V1, V2, and V3 of the detection unit (1) 33, the detection unit (2) 34, and the detection unit (3) 35. Only the voltage V1 is decreased by a predetermined voltage ΔV. The control unit 36 determines that the electrode unit 28 is touched and the other electrode units 30 and 32 are not touched.

  FIG. 13 is an example in which the touch key is applied to an electromagnetic cooker, and is a view seen from the upper surface of the panel unit. 7 is a panel portion made of glass or the like, and 28, 30, and 32 are front side electrodes of a plurality of touch keys provided on the panel portion 7. The touch keys 28, 30, and 32 are assigned functions such as raising the set temperature of the pan holder 39, turning on / off the power, and lowering the set temperature.

The pan holder 39 is for placing a pan here, causing an eddy current to flow from the coil section (not shown) under the panel section 7 to heat the pan, and cooking the food in the pan. In accordance with the assigned function, the control unit 36 controls the current supplied to the heating unit 37, in this case, the coil unit, to perform power control, power off, or temperature control according to the set temperature. Reference numeral 38 denotes a display unit that indicates which level the temperature setting level is in. The display unit 38 displays the temperature setting level by the number of times the touch key 28 is touched, or the touch key 32 is touched to determine the temperature setting level. It will be lowered or displayed. Thus, by providing a touch key on the panel surface, it can be operated while looking at the food, which makes it very easy to use.
Japanese Utility Model Publication No. 57-106152

  However, with such a configuration, when water is spilled on the panel part or juice is spilled from the heating pan, water or juice may adhere to the electrode part of the touch key and cause malfunction. It was.

  Moreover, there also existed a subject of making it malfunction by putting a cooking pot in an electrode part carelessly.

  Furthermore, each touch key requires a detection unit, which causes a problem that the circuit unit becomes complicated.

The present invention solves the above-described conventional problems, and the touch key portion of the plate portion is slid with a finger, the power is turned on / off depending on the sliding state, or the set temperature is changed depending on the stop position of the finger. It intended to, in which it is possible to prevent that causes malfunction of the pan spilled water placed on a electrode.

  In addition, by changing the shape of the electrode part and sliding the upper surface of the plate part of this electrode part with a finger, different signals can be obtained depending on the sliding state, so that the set level differs depending on the set of the electrode part and the detection part. Or can be applied to various settings.

In order to solve the above problems, a cooking device using a touch key according to the present invention has a panel unit made of an electrical insulator, an electrode unit provided on the back surface of the panel unit, and a voltage having a predetermined frequency. An oscillation unit to be applied to, a detection unit that detects an output voltage of the electrode unit, a heating unit that heats a load, and a control unit that inputs a signal of the detection unit and controls the output of the heating unit, The control unit detects the sliding state of the finger based on a change in the output voltage of the electrode unit generated by sliding with the finger on the panel unit, identifies the input according to the sliding state, and The electrode unit includes a first electrode, a second electrode, and a third electrode having mutually different predetermined areas, and an interval between the first electrode and the second electrode, and the second electrode. A predetermined different distance between the electrode and the third electrode; Arranged to, and by the first electrode and the second electrode and the third electrode is electrically connected to configuration, sliding the front side facing the electrode portions of the panel portion with a finger By doing so, the sliding state can be detected to prevent malfunction due to water adhesion or inadvertent placement of the pan on the electrode.

According to the first aspect of the present invention, elongated electrodes having different areas per unit length are provided on the back side of the panel portion, or a plurality of electrodes having a predetermined area are arranged and connected, Construct and detect the sliding state by sliding the position where the back side electrode of the panel part opposes with the finger using the finger touching the panel part as the electrode without providing the electrode on the front side of the panel part In addition, it is possible to prevent malfunction due to water adhesion or inadvertent placement of the pan on the electrode.

  In addition, since the sliding state is detected, inadvertent power on and off can be prevented. Furthermore, since the setting level can be determined by sliding the finger and stopping at an appropriate position, the setting level can be determined sensuously and it is very easy to use.

  Also, since different signals can be obtained by one touch key depending on the sliding state, the number of detection units can be reduced, and the circuit unit can be configured easily.

  And, by using the touch key of the present invention in a heating cooker such as an electromagnetic cooker, it is possible to prevent foreign matter such as water or a pan from touching the touch key and causing a malfunction, and heating the electromagnetic cooker etc. that is safe and easy to use. A cooker can be provided.

The invention according to claim 1 is a panel unit made of an electrical insulator, an electrode unit provided on the back surface of the panel unit , an oscillation unit that applies a voltage of a predetermined frequency to the electrode unit, and the electrode unit A detection unit that detects an output voltage, a heating unit that heats a load, and a control unit that inputs a signal from the detection unit and controls the output of the heating unit. The sliding state of the finger is detected by a change in the output voltage of the electrode unit generated by sliding, and the input according to the sliding state is identified, and the electrode units have mutually different areas. A first electrode, a second electrode, and a third electrode, and a distance between the first electrode and the second electrode, and a distance between the second electrode and the third electrode. Arranged at predetermined different intervals, and the first electrode and the second electrode Since said To pole third electrode is electrically connected to configuration, water attachment, no malfunction due置等mounting pan, can provide use cheap touch key setting levels can intuitively grasp.

Further, a plurality of electrodes having a predetermined different areas, arranged at a predetermined different intervals panel unit, to counter because the electrically connecting the plurality of electrode portions, this electrode portions sandwiching the panel portion the output voltage of the detecting unit by sliding the part with a finger, the interval size and the pulse voltage can be obtained with different pulse voltage in accordance with the sliding of the finger, able to recognize the stop position of the finger, the finger The setting level can be set according to the sliding movement.

The electrode portion from which is configured by providing only the back surface of the panel portion, detects the finger as an electrode, can be constructed less safer malfunctions due to adhering such as water.

In addition , since the cooking device is configured using touch keys, a safe and easy-to-use cooking device can be configured without spilling water or inadvertently placing a pan to cause malfunction.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
This embodiment will be described with reference to FIGS. 1, 2, and 3. FIG. FIG. 1 is a block diagram of the touch key of the present invention, FIG. 2 is a plan view of the touch key of the present invention as viewed from above, and FIG. 3 is a diagram showing the relationship between the output voltage of the detection unit 4 and the sliding position of the finger. . Reference numeral 7 denotes a panel portion made of an electrical insulator such as glass or plastic, and has an electrode portion 3 on the back surface of the panel portion 7. As shown in FIG. 2, the electrode portion 3 is configured such that the area of the opposing electrode portion under the finger gradually increases as the surface of the panel portion 7 is slid with the finger 8. The electrode unit 3, the panel unit 1, and the finger 8 constitute a capacitor, and a high frequency voltage from the oscillation unit 1 is applied to the electrode unit 3 through the contact electrode 2. This high-frequency voltage is detected by the detection unit 4, but when the panel unit facing the part without the electrode unit 3 is touched or not touched, a high voltage is touched to the panel unit opposite to the electrode unit 3. As the voltage is lowered and the finger is slid toward the larger area of the electrode portion 3, the voltage drop is further increased. This voltage is detected by the detection unit 4, converted into a DC voltage, and output to the control unit 5. This voltage change is shown in FIG. The controller 5 detects this voltage change ΔV and controls heating means such as a heater or a display constituted by a heater or the like according to the magnitude of ΔV. For example, if the heating means is a heater and the temperature is set, the temperature setting is increased at the point A when touched, the temperature setting is increased as the finger is swung, and the temperature setting is set at the point B. Further, the finger is swung, and at the point C, the temperature setting can be changed continuously with the high temperature setting. In addition, it is possible to prevent malfunction such as malfunction due to pan shifting by changing the setting level by changing the voltage change from small to large and from large to small by moving the finger back and forth on the panel.

(Embodiment 2)
A second embodiment of the present invention is shown in FIGS. FIG. 4 is a view of the plate portion 7 as viewed from above, and the back surface has electrode portions 10a, 10b, and 10c of the same size, and is connected by a narrow conductor 11. When the finger 8 is slid on the plate 7 of the electrode portions 10a, 10b, and 10c, the output voltage is greatly reduced when the finger is on the electrode, and is on the conductive portion 11 connecting the electrode portion and the electrode portion. Sometimes the output voltage hardly decreases. Therefore, when the finger is slid on the plate 7, the pulse voltage shown in FIG. 5 is obtained. The number of pulses when the finger is stopped can be counted, and a predetermined number can be set to a predetermined setting level.

(Embodiment 3)
Further, as shown in FIG. 6, electrode portions 12 a, 12 b, and 12 c having different sizes are provided on the back surface of the plate 7 at different intervals and connected by a conductive portion 13. When the finger 8 is slid on the plate portion 7 above the electrode portion, the voltage is greatly reduced on the electrode having a large area, and the voltage is reduced on a small area electrode. Accordingly, pulse voltages of different magnitudes are obtained at different intervals, and this pulse train is detected to change the set level, or to turn on / off the power. By doing so, it is possible to more completely prevent malfunction due to inadvertent movement of the pan, inadvertent touch of a person, or the like.

(Embodiment 4)
A fourth embodiment of the present invention is shown in FIG. In the present embodiment, as described above, the finger 8 is used as an electrode. Therefore, by touching the panel portion 7 on the upper surface of the single electrode 13 provided on the back surface of the conventional panel portion 7, a set level is obtained. Can be switched, or input such as power on / off can be performed. In this embodiment, since there is no electrode on the surface, it is possible to reduce a malfunction in which a water droplet is touched while not touching between the electrode and the frame. FIG. 9 shows the output voltage of FIG. By touching the panel section 7 above the electrode section 7, the output voltage decreases by ΔV, and this voltage is detected to detect touch.

(Embodiment 5)
A fifth embodiment of the present invention is shown in FIG. In the present embodiment, as described above, the touch key for performing input by sliding the finger 8 is used in the electromagnetic cooker 23. In this embodiment, the temperature setting parts 17 and 19 of the pan holders 15 and 16 provided on the plate part 14 are provided, and the temperature is set by sliding the parts with fingers. The temperature setting sections 17 and 19 are provided with scales 21 and 22 to make it easy to understand which level is set. Further, a mark 20 may be provided on the sliding parts 17 and 19, and the mark 20 may be moved along with the movement of the finger to display which temperature setting level is presently present. Further, if the mark 20 is made of a conductive material and is moved as an electrode, the size of the surface electrode is defined and the reliability is further improved. The sliding part 18 is turned on and off, and this can be operated by a reciprocating sliding action of a finger in order to prevent a malfunction caused by a pan movement or a careless touch by a child or the like. is there. Note that turning on the power may be a reciprocating sliding operation, and the power supply may be operated only by sliding or touching on one side.

  As described above, by using this touch key in an electromagnetic cooker, an electromagnetic cooker that is safe and easy to use in the home can be provided.

  INDUSTRIAL APPLICATION This invention can be utilized for the touch key provided in the flat panel part of various apparatuses, especially the apparatus which has a flat panel of heating cookers, such as an electromagnetic cooker.

The block diagram of the touch key in Example 1 of this invention The top view of the electrode part seen from the upper surface of the panel part of the touch key in Example 1 of this invention FIG. 5 is a relationship diagram of the sliding position of the touch key and the output voltage in the first embodiment of the present invention. The top view of the electrode part seen from the upper surface of the panel part of the touch key in Example 2 of this invention Relationship diagram between the sliding position of the touch key and the output voltage in the second embodiment of the present invention. The top view of the electrode part seen from the upper surface of the panel part of the touch key in Example 3 of this invention Relationship diagram between the sliding position of the touch key and the output voltage in Embodiment 3 of the present invention The top view of the electrode part seen from the upper surface of the panel part of the touch key in Example 4 of this invention The figure which shows the output voltage of the touch key in Example 4 of this invention. The top view seen from the upper surface of the panel part of the electromagnetic cooker in Example 5 of this invention Block diagram of a conventional touch panel The figure which shows the output voltage of the detection part of the conventional example of a touch panel Plan view using a conventional example of a touch panel for an electromagnetic cooker

Explanation of symbols

7 Panel part 3, 9, 10a, 10b, 10c, 12a, 12b, 12c, 13, 27, 28, 29, 30, 31, 32 Electrode part 1 Oscillating part 4, 33, 34, 35 Detection part 6, 37 Heating Means 5, 36 Control unit 23 Cooking device

Claims (1)

A panel unit made of an electrical insulator, an electrode unit provided on the back surface of the panel unit , an oscillation unit for applying a voltage of a predetermined frequency to the electrode unit, a detection unit for detecting an output voltage of the electrode unit, A heating means for heating a load and a control section for inputting a signal of the detection section and controlling an output of the heating section, wherein the control section is generated by sliding the finger on the panel section. Detecting the sliding state of the finger based on the change in the output voltage of the unit, identifying the input according to the sliding state, and the electrode unit includes a first electrode having a predetermined different area and a first electrode Two electrodes and a third electrode, the gap between the first electrode and the second electrode, and the gap between the second electrode and the third electrode are arranged at predetermined different intervals, And the first electrode, the second electrode, and the third electrode are Heating cooking device using the touch keys that are gas-connected.

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