JP2008057872A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily set cooking conditions by so-called single operation or sliding operation while reducing an arrangement space of detecting electrodes for setting the cooking conditions. <P>SOLUTION: This heating cooker comprises touch input detecting means 39 individually detecting touch input to the detecting electrodes 26D1-26Dn, and a control circuit 27. When touch input to one detecting electrode is detected, the control circuit 27 sets cooking conditions corresponding to the one detecting electrode and displays a cooking condition display pattern corresponding to the one detecting electrode. When simultaneous touch input to a plurality of adjacent detecting electrodes is detected, the control circuit 27 sets cooking conditions corresponding to the plurality of electrodes and displays a cooking condition display pattern corresponding to the plurality of detecting electrodes. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cooking device including a touch input unit on a top plate.

Some cooking devices have a configuration in which a top plate is provided in the opening on the upper surface of the cooking device body, and heating means is provided below the top plate. And as a cooking-by-heating machine provided with the touch input part on the top plate, there are some which are shown by patent documents 1 and 2, for example. These Patent Documents 1 and 2 are configured to include one detection electrode and one contact detection unit for one touch input unit. In this configuration, when the user's finger touches the touch input unit, the human body detection capacitance (capacitance) of the detection electrode changes, and this change is detected by the contact detection means, and the user has input. Is detected.
JP 2003-12354 A JP 2005-38739 A

By the way, there are a plurality of types of input from the user, such as turning on / off the power, selecting a cooking menu, cooking conditions such as heating intensity and heating temperature.
However, in a so-called touch switch including a touch input unit and a detection electrode, if the arrangement interval between adjacent detection electrodes is narrow, a minute current flows to the detection electrode adjacent to the detection electrode of the touch input unit that is touched, and an input error occurs. May be detected. For this reason, it is necessary to increase the arrangement space of the detection electrodes, and in order to prevent erroneous input, when a plurality of detection electrodes detect inputs simultaneously, the input is not accepted.

  However, in a kitchen-equipped heating cooker, the opening of the kitchen is standardized, the size of the top plate is limited, and the space for arranging the detection electrodes cannot be increased. Therefore, it is impossible to provide a large number of detection electrodes for setting cooking conditions such as heating intensity and heating temperature.

  For this reason, for example, two detection electrodes for up and detection electrodes for down are provided for setting the heating intensity, and the heating intensity is set according to the number of touches on the detection electrode. However, there is a problem that the number of input operations by the user increases and the input operation is troublesome.

  The present invention has been made in view of the above-described circumstances, and the object thereof is to cook by allowing the cooking conditions to be easily set by a so-called one-touch operation or a slide operation while suppressing the space for arranging the detection electrodes for setting the cooking conditions. Is to provide a vessel.

  The present invention has been made paying attention to the following points. In the cooking device, when looking at the type of input content entered by the user's operation, as described above, the power on / off, the selection of the cooking menu, the heating intensity, the heating temperature, etc. It is cooking conditions. In this case, input for turning on / off the power source and selecting a cooking menu should not be erroneously input, and therefore it is necessary to provide a sufficient interval between the detection electrodes. However, for example, when detection electrodes for setting cooking conditions such as heating intensity are arranged in a number corresponding to the number of levels, for example, even if there is a simultaneous touch operation, both are for setting the heating intensity. This is a detection electrode, the cooking conditions (heating intensity level) are only slightly changed, and the input content itself is not changed at all. Therefore, even if the detection electrodes are arranged at a narrow arrangement interval, the setting process is performed. If adjusted appropriately, cooking conditions can be set with a one-touch operation.

The invention of claim 1 focusing on this point
A cooker body with a top plate at the top opening and a heating means below the top plate;
A touch input unit of a predetermined area provided on the top surface of the top plate and capable of changing a contact position of a user's finger;
Corresponding to this touch input unit, a plurality of detection electrodes provided on the lower surface side of the top plate at an arrangement interval capable of simultaneous touch input with fingers mutually,
Touch input detection means for individually detecting a touch input to each detection electrode by a change in capacitance between the touch input unit and each detection electrode due to a finger touching the touch input unit;
Cooking condition display means for displaying cooking conditions;
When a touch input to any one of the detection electrodes is detected by the touch input detection means, a cooking condition corresponding to the one detection electrode is set, and simultaneously touch inputs to a plurality of adjacent detection electrodes are detected. Cooking condition setting means for setting cooking conditions corresponding to the plurality of detection electrodes;
When a touch input is detected for any one of the detection electrodes, a cooking condition display pattern corresponding to the one detection electrode is displayed on the cooking display condition display means, and simultaneously for a plurality of adjacent detection electrodes. Cooking condition display control means for causing the cooking condition display means to display a cooking condition display pattern corresponding to the plurality of detection electrodes when touch input is detected;
And heating control means for controlling the heating means under the cooking conditions set by the cooking condition setting means.

  In the first aspect of the present invention, the plurality of detection electrodes are provided on the lower surface side of the top plate at an arrangement interval that allows simultaneous touch input with fingers, so that the arrangement space of the detection electrodes can be minimized. And when the touch input with respect to any one detection electrode is detected by the touch input detection means, the cooking condition setting means sets the cooking condition corresponding to each detection electrode where the touch input is detected. Cooking conditions corresponding to each electrode can be set by one-touch. In addition, when touch inputs to a plurality of adjacent detection electrodes are detected at the same time, cooking conditions corresponding to the plurality of detection electrodes are set. Therefore, cooking corresponding to a plurality of detection electrodes is performed even when the plurality of touch inputs are simultaneous. Conditions can be set with one touch. Therefore, regardless of the position of the touch input unit that the user touches with a finger, cooking conditions corresponding to the contact position can be easily set by a one-touch operation or a slide operation.

  Further, the cooking condition display control means detects each detection even when a touch input is detected for any one of the detection electrodes or when a touch input is detected for a plurality of adjacent detection electrodes at the same time. Since the cooking condition display pattern corresponding to the electrode is displayed on the cooking display condition display means, it is possible to recognize the cooking condition corresponding to the contact position regardless of the position of the touch input unit with the finger. The cooking condition can be easily set by a so-called one-touch operation or slide operation while suppressing the arrangement space of the detection electrodes for setting the cooking condition. The heating control means controls the heating means under the cooking conditions set by the cooking condition setting means.

  According to the present invention, there is an effect that cooking conditions can be easily set by a so-called one-touch operation or a slide operation while suppressing the arrangement space of detection electrodes for setting cooking conditions.

  Hereinafter, a first embodiment in which the present invention is applied to a heating cooker incorporated in a system kitchen will be described with reference to FIGS. FIG. 2 shows an external perspective view of the kitchen cabinet 1 with the cooking device 2 incorporated therein. FIG. 4 is a plan view of the cooker main body 3 shown with the top plate removed. A cooker body 3 of the heating cooker 2 is incorporated in a state of being dropped into an opening 4 provided in the cabinet 1. A roaster portion 5 is provided at the lower portion of the cooker body 3.

  As shown in FIG. 4, the cooker body 3 has an open top surface, two induction heating coils 8 and 9 serving as heating means are provided on the front side of the inside, and another heating is provided at the center back. As a means, for example, a heater 10 made of a radiant heater is provided. In addition, a main circuit board 11 is disposed in the cooker body 3, and as shown in FIGS. 1 and 5, the main circuit board 11 includes a number of light emitting diodes for displaying heating intensity. 12d1 to 12dn are mounted, and a display 13 made of, for example, a fluorescent display tube is mounted, and a plurality of leaf springs (the same number as that of detection electrodes 26D1 to 26Dn and single detection electrodes 23D to 25D described later). The connection terminal 14 is mounted in an upright state.

The light emitting diodes 12d1 to 12dn are accommodated in the light emission guide member 12a and have a rectangular display form as shown in FIG. The number of the light emitting diodes 12d1 to 12dn is the same as the number of detection electrodes 26D1 to 26Dn described later.
As shown in FIGS. 4 and 5, a flange portion 15 is provided at the peripheral edge portion of the opening 3 a of the cooker body 3, and the flange portion 15 is arranged at the edge portion of the opening 4 of the cabinet 1. Yes.

  Further, as shown in FIGS. 3 to 5, the upper surface of the cooker body 3 is made of heat resistant glass so as to cover the opening 3a, that is, to cover the induction heating coils 8 and 9 and the heater 10 from above. The top plate 16 is provided. In this case, the peripheral edge portion 16 a of the top plate 16 projects outward from the cooker body 3 (front-rear direction and left-right direction), and is supported by the flange portion 15. In the top plate 16, the portions corresponding to the upper portions of the left and right induction heating coils 8 and 9 and the heater 10 are circular heating portions 17, 18, and 19, respectively. The internal regions of the display units 17a, 18a, and 19a correspond to the heating units 17, 18, and 19, respectively.

In the top plate 16, a cooking condition display unit 20 (see FIG. 3) is formed on the front side of the heating units 17 and 18 as cooking condition display means including the light emitting diodes 12 d 1 to 12 dn. On the upper side and the lower side of the cooking condition display unit 20, a heating temperature character display unit 21a and a heating intensity display unit 21b for displaying the heating temperature and the heating intensity, which are cooking conditions, are printed. The indicator 13 is also a cooking condition display means.
Further, on the upper surface of the front edge of the top plate 16 (portion protruding forward from the cooker body 3), as shown in FIG. Touch input units 23 to 25 are provided. The touch input unit 22 is for setting cooking conditions.

  The single touch input units 23 to 25 are for control switching. Among them, the single touch input unit 23 is for cooking menu setting, the single touch input unit 24 is for power-on, and the single touch input unit 25 is a power source. It is for off. The touch input unit 22 is formed of a printed film on the top plate 16 in a form having a region (predetermined region) having a length that can arbitrarily change the contact position of the finger, that is, in a long form.

  The single touch input units 23 to 25 are also formed on the top plate 16 by a printing film. The single touch input unit 23 for setting the heating mode is for setting a heating mode suitable for cooking such as normal heating, tempura, and rice cooking.

  A large number (a plurality) of detection electrodes 26D1 to 26Dn are provided on the lower surface side of the front edge portion of the top plate 16 corresponding to the touch input unit 22, and the detection electrodes 26D1 to 26Dn are formed on a substrate 38 to be described later. Are formed with a conductor pattern, and are provided at an arrangement interval that allows simultaneous touch input by fingers. Since the detection electrodes 26D1 to 26Dn are present on the lower surface side of the top plate 16, there is no actual finger contact, and the “arrangement interval allowing simultaneous touch input” refers to the touch on the upper surface of the top plate 16. This is an arrangement interval at which a plurality of detection electrodes can simultaneously enter a touch input state when the input unit 22 is touched.

In FIG. 1 showing a schematic electrical configuration related to the induction heating coil 8, a configuration related to the touch input unit 22 and the detection electrodes 26D1 to 26Dn will be described.
The control circuit 27 serving as cooking condition setting means, cooking condition display control means, and heating control means includes a microcomputer. An inverter control circuit 28 is connected to the control circuit 27. The inverter control circuit 28 controls an inverter 29 that supplies a high-frequency current to the induction heating coil 8.

  Further, a touch input detection circuit 30 is connected to the control circuit 27. The touch input detection circuit 30 includes an oscillation circuit 31 and individual detection circuits 32d1 to 32dn to which oscillation output is supplied from the oscillation circuit 31, respectively. The individual detection circuits 32d1 to 32dn are circuits for detecting touch inputs to the detection electrodes 26D1 to 26Dn, respectively, and basically have the same configuration, so the individual detection circuit 32d1 will be described. The individual detection circuit 32d1 includes a capacitor 33, a detection electrode 26D1, and a contact detection circuit 34. The oscillation output of the oscillation circuit 31 is given to the input terminal of the contact detection circuit 34 via the capacitor 33, the detection electrode 26D1, and the connection terminal 14.

  The contact detection circuit 34 includes a diode 35, a resistor 36, and a charge capacitor 37. The anode of the diode 35, which is the input terminal of the contact detection circuit 34, is connected to the detection electrode 26D1 via the connection terminal 14, and the resistor 36 and the charge capacitor 37 are connected in parallel between the cathode and the ground. A connection point between the cathode serving as a terminal and the charge capacitor 37 is connected to the control circuit 27.

  When the finger of a human body comes into contact with the position directly above or slightly shifted from the detection electrode 26D1 in the touch input unit 22, the human body and the detection electrode 26D1 are capacitively coupled (the human body and the detection electrode 26D1 are connected to each other). The capacitance changes between them and a weak current flows). As a result, the output voltage 34v of the contact detection circuit 34 changes (decreases), and the control circuit 27 determines whether or not the output voltage 34v is equal to or lower than a set value. (Contact judgment function)

Accordingly, the touch input detection circuit 39 and the contact determination function in the control circuit 27 constitute a touch input detection means 39.
The other individual detection circuits 32d2 to 32dn are configured similarly to the individual detection circuit 32d1 with respect to the detection electrodes 26D2 to 26Dn.

  Here, the detection electrodes 26 </ b> D <b> 1 to 26 </ b> Dn are formed on a substrate 38 (see FIGS. 5 and 7) provided on the lower surface of the top plate 16. That is, since the detection electrodes 26D1 to 26Dn have the same configuration, the detection electrode 26D1 will be described. On the upper surface of the substrate 38, the detection electrode 26D1 is formed by a conductor pattern, and on the lower surface of the substrate 38, as shown in FIG. 7, there is a connecting conductor portion 26b that is electrically connected to the detection electrode 26D1 through the through hole 26a. Is formed. The contact detection circuits 34 of the individual detection circuits 32d1 to 32dn are mounted on the main circuit board 11, and the contact detection circuits 34 of the main circuit board 11 and the connection conductor portions 26b of the detection electrodes 26D1 to 26Dn Are connected by the connecting conductor 14.

  Each of the detection electrodes 26D1 to 26Dn is provided corresponding to the cooking condition display unit 20, and each of the detection electrodes 26D1 to 26Dn is sequentially prepared from the left side to the right side as shown in FIG. The heating intensity or heating temperature) is set in a larger direction.

  Single detection electrodes 23D to 25D are provided on the lower surface side of the top plate 16 corresponding to the single touch input units 23 to 25. The single detection electrodes 23D to 25D are also formed on the upper surface of the substrate 38. Yes. In this case, the arrangement interval of the single detection electrodes 23D to 25D is set wider than the arrangement interval of the detection electrodes 26D1 to 26Dn to prevent erroneous detection. The individual detection circuits 23A to 25A of the single detection electrodes 23D to 25D have the same circuit configuration as the individual detection circuits 32d1 to 32dn of the detection electrodes 26D1 to 26Dn. Is omitted. The individual detection circuits 23A to 25A and the contact determination function in the control circuit 27 of the control circuit 27 constitute a single touch input detection means 40.

Here, cooking condition setting means, cooking condition display control means, and heating control means of the control circuit 27 will be described. The control circuit 27 includes a program for cooking condition setting, cooking condition display control, and heating control, and operates as follows according to the program.
As cooking conditions, there are a heating temperature and a heating intensity. When “tempura” is selected as the cooking menu, the cooking condition is set for the heating temperature, and when “normal heating” is selected as the cooking menu, As for cooking conditions, the heating intensity is set.

  For example, when “normal heating” is selected by a touch operation (hand touch operation) on the single touch input unit 23, the heating intensity is set by the touch input unit 22. That is, when the user brings a finger into contact with an appropriate portion of the touch input unit 22, any one of the detection electrodes 26D1 to 26Dn below the touch input unit 22 or adjacent detection electrodes are electrostatically coupled and a weak current flows. As a result, the output voltage 34v of any one of the contact detection circuits 34 of the individual detection circuits 32d1 to 32dn changes, and the control circuit 27 compares the output voltage 34v with a reference value to detect the detection electrodes 26D1 to 26Dn. It is detected that the user has touched one or adjacent detection electrodes.

  For example, as shown in FIG. 8A, when a touch input to the detection electrode 26 </ b> D <b> 1 is detected by the finger corresponding to substantially directly above the first detection electrode 26 </ b> D <b> 1 from the left in the touch input unit 22, A heating intensity J1 (cooking condition) corresponding to the detection electrode 26D1 (referred to as a touch input corresponding electrode in FIG. 9) is set. In this case, the heating intensity corresponding to the first detection electrode 26D1 from the left is “the lowest heating intensity”. And the cooking condition display pattern (pattern which displays only the light emitting diode 12d1) according to the said detection electrode 26D1 is displayed on the said cooking condition display part 20. FIG.

  Then, when the user slides the finger in the right direction (arrow S direction) and the finger corresponds to approximately the middle between the adjacent detection electrodes 26D1 and 26D2, as shown in FIG. The simultaneous touch input to 26D2 is detected by the touch input detection circuit 30 and the control circuit 27.

  Then, in this case, the control circuit 27 sets the heating intensity J1 corresponding to the plurality of detection electrodes 26D1 and 26D2 (in this case, the heating intensity is set in advance so that the lower heating intensity is adopted). That is, as in the case of FIG. 8A, the heating intensity is set to “the lowest heating intensity J1”. Then, a cooking condition display pattern (a display pattern for displaying a display part with low heating intensity, that is, a pattern for displaying only the light emitting diode 12d1) corresponding to the detection electrodes 26D1 and 26D2 is displayed on the cooking condition display part 20.

  Further, when the user slides his / her finger further to the right to correspond to the position immediately above the second detection electrode 26D2 from the left, the heating intensity corresponding to the "second detection electrode 26D2 from the left" A heating intensity J2) that is one step larger than "low heating intensity" is set. Then, a cooking condition display pattern corresponding to the detection electrode 26D2 is displayed on the cooking condition display unit 20 (a display pattern for displaying a display unit with a higher heating intensity, that is, a pattern for displaying 12d2 in addition to the light emitting diode 12d1). .

  Further, as shown in FIG. 8D, when the user slides his / her finger further in the right direction so as to correspond to almost right above the third detection electrode 26D2 from the left, the “third detection electrode from the left”. 26D3 "(in this case, a heating intensity J3 that is two steps larger than the" lowest heating intensity ") is set. Then, the cooking condition display pattern corresponding to the detection electrode 26D3 (display pattern for displaying a display portion with two steps of heating intensity, that is, a pattern for displaying the light emitting diode 12d3 in addition to the light emitting diodes 12d1 and 12d2) is displayed. Displayed on the unit 20.

FIG. 9 shows the relationship between the detection conditions (the “corresponding touch electrode” in FIG. 9) and the cooking conditions (heating intensity) and the display pattern where the touch input is detected.
Here, when the user touches the position shown in FIGS. 8B, 8C, and 8D from the beginning without sliding the finger, the same heating intensity setting and display control are performed. When “tempura” is selected, the heating temperature is set in the same manner. After the heating intensity setting or heating temperature setting described above, the control means 27 controls the induction heating coil 8 or 9 under the set cooking conditions.

  As described above, when a touch input to any one of the detection electrodes 26D1 to 26Dn is detected by the touch input detection circuit 30 and the control circuit 27, a predetermined cooking condition corresponding to each detection electrode is set. Is set. In this embodiment, when the heating intensity or the heating temperature is set according to the order from the left of the detection electrode, and touch input to a plurality of adjacent detection electrodes is detected at the same time, the detection electrodes correspond to the detection electrodes. Preset cooking conditions. In this case, cooking conditions corresponding to the lower order of the corresponding detection electrodes are set.

  Moreover, when a touch input is detected with respect to any one of the detection electrodes 26D1 to 26Dn, a cooking condition display pattern determined in advance corresponding to the one detection electrode is displayed on the cooking condition display unit 20. When a touch input is simultaneously detected for a plurality of adjacent detection electrodes, a predetermined cooking condition display pattern corresponding to the plurality of detection electrodes is displayed on the cooking condition display unit 20. Let

  Further, when the user touches the single touch input unit 23 with a finger from almost right above, the touch input to the single detection electrode 23D is accurately detected, and depending on the number of touch inputs, normal heating, A heating mode suitable for cooking such as tempura and rice cooking is selected and set. When a finger is brought into contact with the other single touch input units 24 and 25 from almost right above, the touch input to the single detection electrodes 24D and 25D is accurately detected.

  Here, depending on the contact position of the user's finger, it is conceivable that the single detection electrodes adjacent to the single detection electrodes 23D to 25D both detect a touch input. In this case, the control circuit 27 operates so as not to accept a plurality of touch inputs from the single detection electrodes 23D to 25D.

Further, the control circuit 27 does not set the cooking condition when a touch input is simultaneously detected from a predetermined number, for example, more than two detection electrodes of the detection electrodes 26D1 to 26Dn.
In addition, cooking conditions are not set even when a touch input is detected simultaneously from two or more sensing electrodes that are separated from the sensing electrodes 26D1 to 26Dn.

  According to the present embodiment, the plurality of detection electrodes 26D1 to 26Dn are provided on the lower surface side of the top plate 16 at the arrangement interval corresponding to the touch input unit 22 and capable of simultaneous touch input with fingers. The arrangement space of the detection electrodes 26D1 to 26Dn can be made as small as possible. And the cooking condition setting means in the control circuit 27 will set the cooking condition corresponding to the said detection electrode, if the touch input with respect to any one detection electrode 26D1-26Dn is detected by the touch input detection means 39. FIG. Therefore, the cooking conditions corresponding to each of the detection electrodes 26D1 to 26Dn can be set by so-called one-touch. In addition, when touch inputs to a plurality of (two) detection electrodes adjacent to each other are detected, cooking conditions corresponding to the plurality of detection electrodes are set. Cooking conditions corresponding to the detection electrodes can be set with one touch. Therefore, the cooking condition corresponding to the contact position can be set with one touch regardless of the position of the touch input unit that the user touches with a finger. In addition, when the user slides the finger while touching the touch input unit 22, the finger is always sequentially in the touch input state by one or two adjacent detection electrodes, so the cooking conditions are sequentially set by the slide operation. it can.

  Further, the cooking condition display control means in the control circuit 27 is configured such that even when a touch input is detected for any one of the detection electrodes, or when a touch input is detected for two adjacent detection electrodes at the same time. However, since the cooking condition display pattern corresponding to each detection electrode is displayed on the cooking condition display unit 20, the cooking condition corresponding to the contact position is recognized no matter which position of the touch input unit 22 is touched by the user. In general, the cooking conditions can be easily set by a so-called one-touch operation or sliding operation while suppressing the arrangement space of the detection electrodes 26D1 to 26Dn for setting the cooking conditions.

  Further, according to the above embodiment, the touch input unit 22 is provided on the upper surface of the overhanging portion of the top plate 16 and the plurality of detection electrodes 26D1 to 26Dn are provided on the lower surface side of the overhanging portion. It is safe because there is no risk of the user touching a cooking device such as a pan during operation.

  According to the present embodiment, in addition to the touch input unit 22, a plurality of single touch input units 23 to 25 are provided on the top surface of the top plate 16, and a top corresponding to the single touch input units 23 to 25 is provided. A plurality of single detection electrodes 23D to 25D are provided on the lower surface side of the plate 16, and the single touch input units 23 to 25 and the single detection electrodes 23D to 25D are brought into contact with the single touch input units 23 to 25 by the touch of a finger. Single touch input detection means 40 for individually detecting the touch input to each of the single detection electrodes 23D to 25D according to the change in capacitance between the single detection electrodes 23D to 25D. When a touch input for 25D is detected, a touch input corresponding to the single detection electrode is received, control corresponding to the touch input is executed, and a plurality of single detection electrodes are controlled. When switch input is detected, and so as not to accept the touch input. Thereby, with respect to a single detection electrode, double simultaneous operation prevention can be ensured, and execution of erroneous control can be reliably prevented.

  In addition, according to the present embodiment, the cooking condition display unit 20 displays heating intensity and the like, and the cooking condition display unit 20 and the plurality of detection electrodes 26D1 to 26Dn are arranged in correspondence with each other. The setting of heating conditions is easy to understand and operability is good.

According to the present embodiment, when the detection electrodes from which touch input is detected are a predetermined number of adjacent detection electrodes, the cooking conditions corresponding to the predetermined number of detection electrodes are set, and the number is larger than the predetermined number. Since the cooking condition is not set when it is a detection electrode, for example, when a certain area of the touch input unit 22 is wet with water, when the user touches one of the touch input units, the touch input is performed. Detection electrodes other than the detection electrodes to be detected are simultaneously in the touch input detection state, and it is unclear which is correct touch input detection. However, in this case, since simultaneous touch input exceeding a predetermined number is not accepted, setting of incorrect cooking conditions can be prevented.
In this case, when there are more detection electrodes than the predetermined number, a specific cooking condition (weakest heating intensity or lowest heating temperature) may be set. In this way, it is possible to set the safe side when there are more than a predetermined number of simultaneous touch inputs.

  FIGS. 10 and 11 show a second embodiment of the present invention. In this second embodiment, the width of the detection electrodes 26D1 to 26Dn is reduced and the arrangement interval is also reduced. Touch input can be obtained for three electrodes. In FIG. 11, the relationship between a touch applicable electrode, cooking conditions (heating intensity), and a display pattern is shown.

  In this embodiment, as shown in FIG. 10A, when a touch input is generated for two adjacent detection electrodes 26D1 and 26D2, cooking conditions (heating intensity) corresponding to the two detection electrodes are set. And the display part pattern (in this case light emitting diode 12d1) corresponding to the said detection electrode 26D1, 26d2 is displayed on the cooking condition display part 20. FIG.

  Next, when the user's finger is slid to the right and a touch input is generated for the three adjacent detection electrodes 26D1 to 26D3, the heating intensity J2 corresponding to the three detection electrodes is set, and the three Display unit patterns (light emitting diodes 12d2, 12d1) corresponding to the two detection electrodes are displayed on the cooking condition display unit 20.

Further, when the user slides his / her finger to the right, the setting of the cooking conditions and the display control are executed in the same manner (see (c) and (d) in the figure).
According to the second embodiment, cooking conditions can be changed with a small amount of contact slide, and fine cooking conditions can be set.

  12 and 13 show a third embodiment of the present invention. In this third embodiment, the number of detection electrodes 26D1 to 26Dm is smaller than the number of detection electrodes 26D1 to 26Dn in the first embodiment. , Formed in a shape having a portion aligned in a direction orthogonal to the arrangement direction. That is, in this case, the leftmost detection electrode 26D1 has a shape in which the lower right corner portion projects rightward, and the rightmost detection electrode 26Dm has a shape in which the upper left corner portion projects leftward. The detection electrode located between them has a parallelogram shape with its lower right corner projecting to the right and its upper left corner projecting to the left. The protruding corner portions (portions indicated by reference signs P1 and P2) are arranged in a direction orthogonal to the arrangement direction.

The number of the detection electrodes 26D1 to 26Dm is approximately one for every two light emitting diodes 12d1 to 12dn.
For example, as shown in FIG. 12A, when a touch input is detected on the detection electrode 26D1, a cooking condition corresponding to the detection electrode 26D1 is set, and a display pattern (light emitting diode 12d1) corresponding to the detection electrode 26D1 is set. Is displayed on the cooking condition display unit 20.

  Also, as shown in FIG. 12C, when a touch input is generated for the next detection electrode 12D2, a cooking condition corresponding to the detection electrode 12D2 is set, and a display corresponding to the detection electrode 26D2 is displayed. A pattern (display pattern for displaying the light emitting diodes 12d3, 12d2, and 12d1) is displayed on the cooking condition display unit 20.

  Further, as shown in FIG. 12B, the user simultaneously makes pseudo contact with the overhanging portions P2 and P1 of two adjacent detection electrodes (detection electrodes 26D1 and 26D2 in the figure), and the two adjacent detection electrodes. When a touch input from 26D1, 26D2 is detected, an intermediate cooking condition between both cooking conditions corresponding to each of the two detection electrodes 26D1, 26D2 is set as a cooking condition, and the display pattern is also detected by the two detections. The display pattern is intermediate between both display patterns of the electrodes. In other words, the “light emitting diode 12d2 or less” display pattern and the “light emitting diode 12d3 or less” display pattern are used as an intermediate “light emitting diode 12d2 or less” display pattern.

  As described above, according to the third embodiment, the plurality of detection electrodes 26D1 to 26Dm are formed in a shape having a portion arranged in a direction orthogonal to the arrangement direction, so that it is possible to simultaneously detect two adjacent detection electrodes. The area of pseudo contact becomes longer, and simultaneous touch input can be reliably detected. In particular, as can be understood from the comparison between FIG. 12 of the third embodiment and FIG. 8 of the first embodiment, the detection is performed in comparison with the number of setting steps of cooking conditions (this is indicated by the number of display patterns). The number of the electrodes 26D1 to 26Dm can be reduced, and the electric circuit configuration can be simplified.

And in this 3rd Example, the cooking conditions according to the touch input detection of the several adjacent detection electrode simultaneously are cooking conditions intermediate between both cooking conditions according to the touch input detection of each adjacent detection electrode. As compared with the case where both cooking conditions are set according to detection of the touch input of each detection electrode, intermediate cooking conditions can be set, and fine cooking conditions can be set. .
Further, according to the third embodiment, the cooking condition display pattern corresponding to a plurality of adjacent detection electrodes at the same time is set as an intermediate cooking condition display pattern between both cooking condition patterns corresponding to each adjacent detection electrode. Therefore, it is possible to display detailed cooking conditions and improve usability.

  FIG. 14 shows a fourth embodiment of the present invention. This fourth embodiment is different from the third embodiment in that the shapes of the detection electrodes 26D1 to 26Dm are changed. In the fourth embodiment, the parts P1 and P2 of the detection electrodes 26D1 to 26Dm are substantially rectangular. In the fourth embodiment, the same effect as in the third embodiment can be obtained.

  In addition, this invention is not limited to each above-mentioned Example, It can change and implement as follows. For example, the touch input detection circuit 30 may be changed as appropriate. In addition, the touch input detection circuit 30 may be configured to incorporate a circuit corresponding to the contact determination function in the control circuit 27. In this way, the touch input detection circuit 30 itself constitutes the touch input detection means. Can do.

  In addition, as a touch input detection method, a method of detecting a change in electrostatic capacitance between the electrode and the human body has been exemplified. However, a large number of touch electrodes are arranged in the touch input portion so as to correspond to the detection electrodes, and the finger is detected. A method of detecting a change in electrostatic capacitance between the touch electrode touched by and the detection electrode may be used. Also, the specific configuration of the cooking condition display means is not limited to the above-described embodiments. For example, the number of light emitting diodes may be displayed instead of the number of 7 segments, and the cooking state (heating output status, etc.) display may also be used. It is good also as a structure made to do. Further, the auxiliary electrode is provided on the top surface of the top plate 16 by baking a conductive paste or the like so as to face the detection electrodes 26D1 to 26Dn, and the capacitance change when the human body contacts the auxiliary electrode is increased. It is also good.

The block diagram of the electric constitution regarding the induction heating coil according to the first embodiment of the present invention A perspective view showing a cooking device incorporated in a kitchen cabinet Plan view of touch input part Top view with the top plate omitted Longitudinal side view of board part Partial enlarged plan view of touch input unit Same vertical side view (A)-(d) is a figure which shows the relationship between a different operation state and the display state relevant to this. The figure for demonstrating the relationship between a touch input applicable electrode, cooking conditions, and a display pattern FIG. 8 equivalent view showing a second embodiment of the present invention. Fig. 9 equivalent FIG. 8 equivalent view showing a third embodiment of the present invention. Fig. 9 equivalent FIG. 12 equivalent view showing the fourth embodiment of the present invention.

Explanation of symbols

  In the drawings, 1 is a kitchen cabinet, 2 is a heating cooker, 3 is a cooker body, 8 and 9 are induction heating coils (heating means), 10 is a heater (heating means), 11 is a main circuit board, and 12d1 to 12dn are Light emitting diode, 16 is a top plate, 17, 18 and 19 are heating units, 20 is a cooking condition display unit (cooking condition display means), 22 is a touch input unit, 23 to 25 are single touch input units, and 23A to 25A are Individual detection circuit, 23D to 25D are single detection electrodes, 26D1 to 26Dn and 26Dm are detection electrodes, 27 is a control circuit (cooking condition setting means, cooking condition display control means and heating control means), 30 is a touch input detection circuit, 32d1 to 32dn are individual detection circuits, 34 is a contact detection circuit, 38 is a substrate, 39 is touch input detection means, and 40 is single touch input detection means. Show.

Claims (8)

A cooker body with a top plate at the top opening and a heating means below the top plate;
A touch input unit of a predetermined area provided on the top surface of the top plate and capable of changing a contact position of a user's finger;
Corresponding to this touch input unit, a plurality of detection electrodes provided on the lower surface side of the top plate at an arrangement interval capable of simultaneous touch input with fingers mutually,
Touch input detection means for individually detecting a touch input to each detection electrode by a change in capacitance between the touch input unit and each detection electrode due to a finger touching the touch input unit;
Cooking condition display means for displaying cooking conditions;
When a touch input to any one of the detection electrodes is detected by the touch input detection means, a cooking condition corresponding to the one detection electrode is set, and simultaneously touch inputs to a plurality of adjacent detection electrodes are detected. Cooking condition setting means for setting cooking conditions corresponding to the plurality of detection electrodes;
When a touch input is detected for any one of the detection electrodes, a cooking condition display pattern corresponding to the one detection electrode is displayed on the cooking display condition display means, and simultaneously for a plurality of adjacent detection electrodes. Cooking condition display control means for causing the cooking condition display means to display a cooking condition display pattern corresponding to the plurality of detection electrodes when touch input is detected;
A heating cooker comprising: heating control means for controlling the heating means under the cooking conditions set by the cooking condition setting means. The front edge of the top plate is a form that protrudes forward from the cooker body,
The cooking device according to claim 1, wherein a touch input portion is provided on the upper surface of the overhang portion, and a plurality of detection electrodes are provided on the lower surface side of the overhang portion. In addition to the touch input unit, a plurality of single touch input units are provided on the top plate upper surface, and a plurality of single detection electrodes are provided on the top plate lower surface side corresponding to the single touch input unit,
A single touch input that individually detects a touch input to each single detection electrode by a change in capacitance between the single touch input unit and each single detection electrode due to a finger touching the single touch input unit Providing detection means;
When the touch input to only one single detection electrode is detected by the single touch input detection means, the touch input is received, and when the touch input to a plurality of single detection electrodes is detected at the same time, The cooking device according to claim 1, further comprising a single cooking condition setting unit that does not accept touch input. In the cooking condition setting means, the cooking condition when the detection electrode in which the touch input is detected is a plurality of adjacent detection electrodes is an intermediate cooking condition between the two cooking conditions according to each adjacent detection electrode,
In the cooking condition display control means, the cooking condition display pattern when the detection electrode where the touch input is detected is a plurality of adjacent detection electrodes is an intermediate cooking condition of both cooking condition patterns corresponding to each adjacent detection electrode The cooking device according to claim 1, wherein the cooking device is a display pattern.   The cooking device according to claim 1, wherein the plurality of detection electrodes are formed in a shape having portions arranged in a direction orthogonal to the arrangement direction.   2. The cooking device according to claim 1, wherein the cooking condition display means displays heating intensity and the like, and the cooking condition display means and a plurality of detection electrodes are arranged in correspondence with each other.   The cooking condition setting means sets cooking conditions corresponding to the predetermined number of detection electrodes when the detection electrodes from which the touch input is detected are adjacent to the predetermined number of detection electrodes, and the detection conditions are greater than the predetermined number. 2. The cooking device according to claim 1, wherein cooking conditions are not set in some cases. The cooking condition setting means sets cooking conditions corresponding to the predetermined number of detection electrodes when the detection electrodes from which the touch input is detected are adjacent to the predetermined number of detection electrodes, and the detection conditions are greater than the predetermined number. 2. The cooking device according to claim 1, wherein a specific cooking condition is set in some cases.

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