JP5214411B2 - Cooker - Google Patents

Description

  The present invention relates to a cooking device provided with an operation unit on a top plate.

  Conventionally, there exists a heating cooker of patent document 1 as this kind of heating cooker. The structure of the operation part 101 in this heating cooker is shown in FIG. A touch display unit 103 is formed on the upper surface of the top plate 102 with a coating film, and a substrate 104 is disposed on the lower surface of the top plate 102. A detection electrode 105 which is an operation unit is formed on the upper surface of the substrate 104 so as to face the touch unit 103, and a connection conductor 107 which is electrically connected to the detection electrode 105 through a through hole 106 on the lower surface of the substrate 104. And the connection conductor 107 is connected to a control unit (not shown).

In this configuration, when the user touches the touch display unit 103 with a finger, a weak current flows through the detection electrode 105, which is detected by a control unit (not shown) to detect the presence of an input operation.
JP 2008-57872 A

  The heating cooker is installed in a kitchen or the like, and it is necessary to consider that water wetting and oxidation are likely to occur. From this point of view, the conventional cooking device is a method for detecting a weak current generated between a human body and the detection electrode 105, so that the detection electrode 105 is oxidized or the through hole is oxidized. If this occurs, there is a problem that the weak current level falls to an unmeasurable level, or the weak current does not flow and the detection accuracy of the operation input is deteriorated.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a cooking device that is resistant to oxidation and the like and can prevent the detection accuracy of an operation input from being lowered.

The invention of claim 1 comprises a cooker body provided with a top plate at the opening on the upper surface and heating means below the top plate;
The top finger is formed on the top plate, and the user's fingers are close to each other for input operation. The first conductor is provided on the bottom surface of the top plate, and is provided on the bottom surface side of the first conductor. An operation unit comprising: an electrical insulating layer; and a second conductor provided opposite to the first conductor between the electrical insulating layers ;
A control unit that is electrically connected to the second conductor and detects the presence or absence of the user's input operation to control the heating means ;
The electrical insulating layer mounts the control unit, the second conductor is electrically connected directly to the control unit, and the electrical insulating layer is in contact with the first conductor at one end side. However, it is characterized in that the middle part is bent so as to be separated from the top plate, and the control part is provided on the other end side .

According to the first aspect of the present invention, since the electrical insulation layer is present between the first conductor and the second conductor, the electrostatic coupling is performed. The electric capacity changes, and the control unit detects the change and detects the presence or absence of the user's input operation.
And even if the first conductor and the second conductor may oxidize, the capacitance between these conductors does not change, so that the detection accuracy of the operation input decreases. Can be prevented.

  According to the present invention, it is possible to prevent the detection accuracy of the operation input from being deteriorated due to resistance to oxidation or the like.

  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. 3 is a plan view of the cooker 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 shown in FIG. 2 is provided at the lower portion of the cooker body 3.

  As shown in FIG. 3, 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 main body 3, and display groups 12A and 12B made up of a number of light emitting diodes for displaying heating intensity are mounted on the main circuit board 11. In addition, display units 13, 14A, 14B, 15A, and 15B made of, for example, fluorescent display tubes are mounted.

  As shown in FIGS. 1 and 3, a flange portion 3 b is provided at the peripheral edge portion of the opening 3 a of the cooker body 3, and this flange portion 3 b is arranged at the edge of the opening 4 of the cabinet 1. ing.

  Furthermore, as shown in FIGS. 1, 2, and 4, the upper surface of the cooker body 3 is covered with the opening 3a, that is, the induction heating coils 8 and 9 and the heater 10 are covered from above. A transparent heat-resistant glass top plate 16 is provided. A translucent layer 16A (see FIG. 1) is formed on the lower surface of the top plate 16 by non-conductive sputtering, and an opaque non-conductive coating film 16B (see FIG. 1) is formed on the lower surface of the translucent layer 16A. ) Is formed so that the inside cannot be seen.

The peripheral edge portion 16a 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 3b.
In the top plate 16, the left and right induction heating coils 8, 9 and the portions corresponding to the upper part of the heater 10 are respectively formed with cooker placement display portions 17, 18, 19 having a circular pattern.

FIG. 4 shows a state in which light is displayed as if each display unit is lifted by emitting light from the display unit described below.
On the back side of the top plate 16, cooking condition display units 12AH and 12BH (see FIG. 4) are disposed on the front side of the cooking device placement display units 17 and 18 above the display unit groups 12A and 12B. The cooking condition display portions 13H, 14AH, 14BH, 15AH, and 15BH provided by the punched holes formed in the film 16B and having different display contents located above the indicators 13, 14A, 14B, 15A, and 15B It is provided by a hole formed in the coating film 16B. Each cooking condition display section 12AH, 12BH, 13H, 14AH, 14BH, 15AH, and 15BH is illuminated and displayed from below by a corresponding indicator, thereby allowing the top plate 16 to be seen through the translucent layer 16A. And visible from the top surface of the top plate 16 as shown in FIG.

  Moreover, as shown in FIG.1 and FIG.4, the display parts 20AH-27AH and 20BH-27BH for input guidance are on the lower surface of the front edge part (part projected ahead from the cooker main body 3) of this top plate 16. As shown in FIG. It is provided by a punched hole formed in the coating film 16B. These input guidance display sections 20AH to 27AH and 20BH to 27BH are optically displayed so as to emerge due to light emission from a light emitter 45 described later (see FIG. 4). When a light emitting body 45 described later is turned off, the inside of the top plate 16 is almost invisible (so-called blackout state).

  The right input guidance display sections 20AH to 27AH and the left input guidance display sections 20BH to 27BH have basically the same configuration, and the right input guidance display sections 20AH to 27AH, The configuration of the operation unit provided below the left input guidance display units 20BH to 27BH is basically the same, so the operation unit below the right input guidance display units 20AH to 27AH and the like. This will be described below.

The input guidance display unit 20AH is for starting / cutting cooking, the input guidance display unit 21AH is for menu selection, the input guidance display unit 22AH is for setting up heating intensity and heating time, and the input guidance display unit 23AH is The display units 24AH to 27AH for setting the heating intensity and the heating time down are for setting the heating intensity.
For example, as can be seen from FIG. 1 which shows a cross section of the input guide display unit 22AH and the operation unit 30, the input guide display unit 22AH has a shape of “<”. Is formed by.

Furthermore, as shown in FIG. 5, operation units 28 to 41 are provided below the input guidance display units 20AH to 27AH.
The operation units 28 to 41 include first conductors 28 a to 41 a shown in FIG. 5, second conductors 28 b to 41 b shown in FIG. 6, and electrical insulation shown in FIGS. 1 and 6 interposed therebetween. Layer 42.

In FIG. 5, the first conductors 28a to 41a are shown in a plan view. The first conductors 28a to 31a are formed on the lower surface of the coating film 16B so as to correspond to the input guide display portions 20AH to 23AH. In this case, the first conductors 28a to 31a are formed by printing and baking a conductive paint. .
The other first conductors 32a to 41a are formed on the lower surface of the coating film 16B so as to correspond to the input guide display portions 24AH to 27AH. In this case as well, a conductive paint is printed and baked. Is formed. The first conductors 32a to 41a are provided at an arrangement interval at which simultaneous operation with fingers is possible.

The first conductors 28a to 41a are integrally provided on the top plate 16 as described above.
As shown in FIG. 5, these first conductors 28 a to 41 a are made transparent so that the characters and the figures can be transmitted to the portions of the corresponding input guidance display sections 20 </ b> AH to 27 </ b> AH that face the letters and figures. Slightly larger punch holes 28ad to 41ad are formed in the upper part. For example, as can be seen from FIG. 1 showing a cross section of the input guidance display unit 22AH and the operation unit 30, for example, the first conductor 30a corresponds to the input guidance display unit 22AH indicating the “<” shape. Thus, a slightly larger substantially “<” shaped hole 30ad is formed.

  As shown in FIG. 1, the electrical insulating layer 42 constitutes a flexible substrate body of the flexible substrate 43, is made of a translucent material, and has translucency. As shown in FIGS. 1 and 6, the second conductors 28 b to 41 b are provided on the lower surface of the electrical insulating layer 42. The second conductors 28b to 41b are made of a copper thin film, and are affixed to the electrical insulating layer 42 and provided integrally.

In this case, connection conductors 28bc to 41bc are integrally led out backward to the second conductors 28b to 41b.
As shown in FIG. 6, each of the second conductors 28b to 41b is formed with a hole 28bd to 41bd, and the hole 28bd to 41bd is a hole 28ad to the first conductor 28a to 41a. It is slightly larger than 41ad.

  Accordingly, in the operation units 28 to 41, the first conductors 28a to 41a have the punch holes 28ad to 41ad, the electric insulating layer 42 is made of a light transmissive material, and the second conductor 28b. The light transmission part 44 shown in FIG. 1 is provided because .about.41b has the holes 28bd to 41bd.

  In FIG. 1, a light emitter 45 is provided below the second conductors 28b to 41b, and the light emitter 45 is supported by the flange portion 3b. The light emitter 45 includes a light guide member 46 serving as a light guide and an LED 47 serving as a light source to be described later. The light emitter 45 corresponds to the light transmitting portion 44 of each operation unit 28 to 41. Is provided.

  The light guide member 46 is made of a material capable of guiding light. The light guide member 46 has one end located below the operation units 28 to 41 and above the flange 3b, and the other part from the middle. The end portion is bent downward by bending the front side portion in the opening 3a downward. A thin plate-like light diffusing plate 46 a is formed at the portion of the light guide member 46 facing the operation units 28 to 41.

  The flexible substrate 43 is provided along the hanging portion 46 b from the upper surface of the light guide member 46, and thus the flexible substrate 43 is separated from the top plate 16 substantially vertically.

  In addition, a control unit 48 serving as a control unit is mounted on the flexible substrate 43 in a substantially vertical state with respect to the top plate 16, and the connection of the second conductors 28b to 41b is connected to the control unit 48. The conductors 28bd to 41bd are connected, so that the second conductors 28b to 41b are directly connected to the control unit 48 via the integral connection conductors 28bd to 41bd. When there is a user input operation (that the user's finger has come close to the input operation) in the operation units 28 to 41, the control unit 48 includes the first conductors 28a to 28a of the operation units 28 to 41. By detecting a change in capacitance between 41a and the second conductors 28b to 41b, the presence or absence of the input operation is detected, and the induction heating coils 8 and 9 and the heater 10 are controlled. is there.

  On the electrically insulating layer 42 of the flexible substrate 43, an LED 47 as a light source is mounted in the vicinity of the end 46c of the light guide member 46. Therefore, the LED 47 is positioned at the end where the light guide member 46 hangs down. ing. The LED 47 is provided on the first conductors 28 a to 41 a side from the control unit 48.

  The LED 47 is controlled to be turned on by the control unit 48 when the operation units 28 to 41 are input. The LED 47 is provided in a necessary number corresponding to each input guidance display unit. In FIG. 1, when the LED 47 is turned on, the light passes through the light guide member 46 and is diffused from the light diffusing plate 46a. Further, the hole 30bd of the second conductor 30b, a light-transmitting electrical insulating layer 42, the first conductor 30a is released to the outside through the hole 30ad, the input guide display 22AH, the translucent layer 16A, and the top plate 16. Thereby, “<” in the input guidance display section 22AH is optically displayed. This light display action is the same for other input guidance display units.

  In the present embodiment, the electrical insulation layer 42 is present between the first conductors 28a to 41a and the second conductors 28b to 41b in the operation units 28 to 41, thereby being electrostatically coupled. When the user's fingers come close to the operation units 28 to 41 below the input guidance display units 20AH to 27AH, the capacitance changes, and the change is detected by the control unit 48, and the presence or absence of the user's operation input. Is detected.

  And according to the present Example, even if the 1st conductors 28a-41a and the 2nd conductors 28b-41b may oxidize, the electrostatic capacitance between these conductors may change. Therefore, it is possible to prevent the detection accuracy of the operation input from being lowered.

  In addition, according to the present embodiment, the first conductors 28a to 41a are integrally provided on the lower surface of the top plate 16, and the second conductors 28b to 41b are integrally provided to the electrical insulating layer 42. 42 is arranged so that the second conductors 28b to 41b face the first conductors 28a to 41a, the number of parts can be reduced, and the assembly can be simplified and the cost can be reduced. In addition, it is possible to improve the reliability of the detection accuracy of the operation input.

  Moreover, according to the present Example, the operation parts 28-41 are provided in the arrangement | positioning space | interval in which simultaneous operation with a finger is mutually possible. In such an arrangement, a large number of operation units 28 to 41 are provided at a narrow interval. However, as described above, since the detection accuracy of the operation input can be ensured, simultaneous operation input can be reliably detected.

  Further, according to the present embodiment, since the second conductors 28b to 41b of the operation units 28 to 41 are electrically directly connected to the control unit 48 by the connection conductors 28bc to 41bc, the operation unit is connected to the connector or the connection. Compared to the configuration connected to the control unit via the spring, the configuration is simple, the cost is low, and the electrical reliability is improved.

  Further, according to the present embodiment, since the electrical insulating layer 42 is mounted with the control unit 48 and the second conductors 28b to 41b are electrically connected directly to the control unit 48, the electrical insulating layer 42 is the substrate. Can be combined, and the structure can be simplified and the cost can be reduced.

  In this case, according to the present embodiment, the electrical insulation layer 42 is provided with a plurality of the second conductors 28b to 41b, that is, a plurality of second conductors 28b to 41b are provided for one electrical insulation layer 42. Since the conductors 28b to 41b are provided, the wiring configuration can be simplified.

  In addition, according to the present embodiment, the electrical insulating layer 42 is in contact with the first conductors 28a to 41a on one end side and is bent so that the middle portion is separated from the top plate 16, and the other end side. Since the control unit 48 is provided in the control unit 48, the control unit 48 to which the second conductors 28 b to 41 b are connected can be separated from the heated top plate 16, and is separated from the top plate 16. Since this is a portion, the degree of freedom in selecting the location of the control unit 48 is increased.

  Further, according to this embodiment, since the electrical insulating layer 42 is formed of a flexible substrate, the control unit 48 mounted on the electrical insulating layer 42 can be moved to a free position by bending the electrical insulating layer 42. Can be arranged.

  In addition, according to the present embodiment, the control unit 48 is provided in a substantially vertical state with respect to the top plate 16 at the front portion in the opening 3a of the cooker body 3, so that the control unit 48 is connected to the induction heating coil. The control unit 48 can be provided at a position separated from the 8 and 9. Further, a space can be formed between the induction heating coils 8 and 9 and the control unit 48, and other components such as the display unit group 12A can be effectively disposed in this space.

  Further, according to this embodiment, a non-conductive layer (semi-transparent layer 16A made of sputtering) is formed on the back surface of the top plate 16, and the first conductors 28a to 41a are provided on the back surface of the semi-transparent layer 16A. Therefore, even if the first conductors 28a to 41a are provided below the translucent layer 16A, the capacitive operation units 28 to 41 can be configured. That is, when a conductive layer is formed from conductive sputtering, a capacitive operation unit cannot be formed below the conductive layer, but this is not the case in this embodiment.

The present invention is not limited to the above embodiment, and may be implemented as follows.
The first conductor and the electrical insulating layer may be integrally provided on the lower surface of the top plate, and the second conductor may be disposed to face the first conductor. In this case, the intended purpose can be achieved by a configuration that does not require the use of a member such as a flexible substrate in which the second conductor and the electrical insulating layer are integrated.

  The operation unit may be configured by integrating the first conductor, the electrical insulating layer, and the second conductor. In this way, it is possible to prevent as much as possible that the capacitance is changed by the operation unit of these integrated objects as compared with the case where the first conductor, the electrical insulating layer, and the second conductor are assembled separately. Thus, the detection accuracy can be improved, and it is not necessary to form the first conductor on the lower surface of the top plate, so that the configuration can be simplified and the cost can be reduced.

  Further, as shown in FIG. 7 shown as the second embodiment of the present invention, a holding plate 51 may be provided between the light guide member 46 and the flexible substrate 43 to hold the flexible substrate 43. In this case, it is preferable to form a light transmission hole 51 a in the holding plate 51 corresponding to the light transmission part 44. In this case, the light guide member 46 is provided with a prism sheet 52 on a surface facing the operation units 28 to 41, and the prism sheet 52 is provided with the light diffusion plate 46a. The prism sheet 52 has an action of converting the light of the light guide member 46 upward (directions of the operation units 28 to 41), and can perform the light direction conversion well. This prism sheet 52 may be added to the configuration of the first embodiment.

  In addition, the operation unit does not have translucency due to the hole, and the entire operation unit may have translucency (light transmissive material). Further, the input guidance display sections 20AH to 27AH may be omitted. That is, if the holes 28ad to 41ad of the first conductors 28a to 41a are formed so as to display final characters and figures, the display means 20AH is effective as display means. ~ 27AH may not be present. In this case, the display part may be formed in a window shape, or the display part may be omitted together with the coating film 16B.

  Further, in the above-described embodiment, the light display can be performed only when the LED 47 is turned on. However, there is a possibility that the input guidance display sections 20AH to 27AH can be seen through the translucent layer 16A when the LED 47 is turned off. In such a case, if the top plate 16 is made of a translucent material, is colored black so that light can be transmitted, or the coating film 16B is darkened, the user cannot see when the lamp is turned off ( (Blackout state) can be realized more reliably.

  In this case, the light diffusion plate 46a may be provided with a function of absorbing visible light that has passed through the top plate 16. In this way, visible light that has passed through the input guide display portions 20AH to 27AH of the top plate 16, the semi-transparent layer 16A, and the coating film 16B from the outside can be absorbed by the light diffusion plate 46a, making the inside difficult to see. be able to.

  The sputtering or printing method for forming the translucent layer may be performed based on various methods such as the following known techniques. For example, JP 2007-227402, JP 2004-247186, JP 2008-267633, JP 2008-239405, JP 2008-226608, JP 2008-14552, JP 2003-86337. JP, 10-284238, JP 2008-267633, JP 2008-179537, JP 2006-177628, JP 2006-125645, JP 2005-90906, JP 2005-55005, JP 2004-342609, JP 2004-333102, JP 2004-225950, JP 2004-211910, JP 2004-193050.

FIG. 4 is a sectional view taken along line ZZ in FIG. 4 showing the first embodiment of the present invention. A perspective view showing a cooking device incorporated in a kitchen cabinet Top view with the top plate omitted Plan view of the operation section Plan view showing the first conductor Plan view showing the second conductor FIG. 1 equivalent view showing a second embodiment of the present invention. 1 equivalent diagram showing a conventional example

Explanation of symbols

  In the drawings, 1 is a kitchen cabinet, 2 is a heating cooker, 3 is a cooker body, 4 is an opening, 8 and 9 are induction heating coils (heating means), 10 is a heater (heating means), 16 is a top plate, and 20AH. ˜27AH is an input guidance display unit, 28˜41 is an operation unit, 28a˜41a are first conductors, 28b˜41b are second conductors, 42 is an electrical insulating layer, 43 is a flexible substrate, 44 is light A transmission part, 46 is a light guide member (light guide part), 45 is a light emitter, 47 is an LED (light source), and 48 is a control part.

Claims (7)

A cooker body provided with a top plate at the opening on the upper surface and heating means below the top plate;
The top finger is formed on the top plate, and the user's fingers are close to each other for input operation. The first conductor is provided on the bottom surface of the top plate, and is provided on the bottom surface side of the first conductor. An operation unit comprising: an electrical insulating layer; and a second conductor provided opposite to the first conductor between the electrical insulating layers;
A controller that is electrically connected to the second conductor and detects the presence or absence of the user's input operation to control the heating means ;
The electrical insulating layer includes the control unit, and the second conductor is electrically connected directly to the control unit.
Furthermore, the electrical insulating layer is in contact with the first conductor on one end side, has a shape that bends so that a middle portion is separated from the top plate, and the control portion is provided on the other end side. A cooking device characterized by . A cooker body provided with a top plate at the opening on the upper surface and heating means below the top plate;
The top finger is formed on the top plate, and the user's fingers are close to each other for input operation. The first conductor is provided on the bottom surface of the top plate, and is provided on the bottom surface side of the first conductor. An operation unit comprising: an electrical insulating layer; and a second conductor provided opposite to the first conductor between the electrical insulating layers;
A controller that is electrically connected to the second conductor and detects the presence or absence of the user's input operation to control the heating means;
The second conductor is electrically connected directly to the control unit;
The electrical insulation layer is provided with a plurality of the second conductors,
Furthermore, the electrical insulating layer is in contact with the first conductor on one end side, has a shape that bends so that a middle portion is separated from the top plate, and the control portion is provided on the other end side. A cooking device characterized by . A cooker body provided with a top plate at the opening on the upper surface and heating means below the top plate;
The top finger is formed on the top plate, and the user's fingers are close to each other for input operation. The first conductor is provided on the bottom surface of the top plate, and is provided on the bottom surface side of the first conductor. An operation unit comprising: an electrical insulating layer; and a second conductor provided opposite to the first conductor between the electrical insulating layers;
A controller that is electrically connected to the second conductor and detects the presence or absence of the user's input operation to control the heating means;
The second conductor is electrically connected directly to the control unit;
Furthermore, the said electric insulation layer is comprised with a flexible substrate, The heating cooker characterized by the above-mentioned . A cooker body provided with a top plate at the opening on the upper surface and heating means below the top plate;
The top finger is formed on the top plate, and the user's fingers are close to each other for input operation. The first conductor is provided on the bottom surface of the top plate, and is provided on the bottom surface side of the first conductor. An operation unit comprising: an electrical insulating layer; and a second conductor provided opposite to the first conductor between the electrical insulating layers;
A controller that is electrically connected to the second conductor and detects the presence or absence of the user's input operation to control the heating means;
The electrical insulating layer includes the control unit, and the second conductor is electrically connected directly to the control unit.
Furthermore, the said electrically insulating layer is comprised with the flexible substrate, The heating cooker characterized by the above-mentioned . The cooking device according to claim 3 or 4, wherein the electrical insulating layer is provided with a plurality of the second conductors . The electrical insulating layer is in contact with the first conductor on one end side, has a shape that bends so that a middle portion is separated from the top plate, and the control portion is provided on the other end side. The heating cooker according to claim 3 or 4 . The cooking device according to claim 3 or 4, wherein the control unit is provided in a substantially vertical state with respect to the top plate at a front portion in an opening of the cooking device body .

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