JP7145778B2 - heating cooker - Google Patents

Description

The present invention relates to a heating cooker such as a gas stove and an IH stove.

2. Description of the Related Art In recent years, in heating cookers such as gas stoves and IH stoves, tempered glass with a high aesthetic appearance is used for the top plate. In this type of heating cooker, there is known one in which an operation panel section is provided in a partial region of the top plate positioned in front of the heating portion that heats the object on the top plate.

The operation panel section is provided with capacitive touch switches, and when the user touches one of a plurality of touch operation sections set on the operation panel section with a finger, the switch is assigned to the touch operation section. It is possible to perform an operation based on the contents of the content (for example, see Patent Document 1 below).

As a touch switch, there is known one in which an electrode sheet or an electrode substrate having electrodes formed on the back surface of a dielectric panel is attached in close contact (for example, see Patent Document 2 below).

The electrode sheet and electrode substrate are made by forming detection electrodes and wiring patterns for detecting touch operations on a synthetic resin film or substrate. A glass plate having optical transparency is suitable for the dielectric panel. A touch operation unit is set on the upper surface of the glass plate. The touch operation part is provided with corresponding detection electrodes of the electrode sheet.

A touch switch configured in this manner is preferably used in a cooking device having a glass top plate that can function as a dielectric panel.

Japanese Unexamined Patent Application Publication No. 2010-2126 JP 2013-120656 A

In the touch switch having the above configuration, the electrode sheet to be employed includes polyester-based synthetic resin films such as polyethylene terephthalate and polyethylene naphthalate, and the electrode substrate includes paper phenol, glass composite, glass apoxy, and the like. Since these materials are deformed or damaged at 120° C. to 150° C., they have relatively low heat resistance and are not suitable for high temperature environments.
For this reason, when a hot object such as a pot or frying pan heated by the heating part of the heating cooker (for example, a high temperature deep fryer) is placed on the operation part flush with the top plate, the high temperature The heat from the object to be heated may cause deformation or damage to the member such as the electrode sheet on which the detection electrodes are formed, resulting in detection failure or malfunction of the touch operation.

Further, even if touch operation detection failure or malfunction occurs due to deformation or damage of the member forming the detection electrode, the heating operation cannot be stopped by the touch operation, and the heating operation may continue.

In view of the above points, the present invention provides a heating cooker that can reliably stop the heating operation by a touch operation even when the member on which the detection electrode is formed is deformed or damaged due to the influence of heat. intended to provide

In order to achieve such an object, the present invention provides a top plate on which an object to be heated can be placed, a heating unit for heating the object to be heated on the top plate, and a heating unit provided in a part of the top plate. an operation panel section made of an electrical insulator, a plurality of touch operation sections set on the operation panel section, a capacitive touch switch device for detecting a touch operation on each touch operation section, and each touch operation section and a control board that performs control according to a touch operation on the heating cooker, wherein the touch switch device includes an operation touch switch unit for detecting a touch operation related to the heating operation of the heating unit, and a main power supply ON and a main power touch switch unit for detecting a touch operation to turn off/off, and the operation touch switch unit is provided in contact with or in close proximity to the back surface of the top plate for detecting a touch operation. Detecting electrodes are provided, and the main power touch switch section includes: a second detecting electrode for detecting a touch operation provided at a larger distance than the first detecting electrode from the back surface of the top plate; and the second detecting electrode. and a metal electrode provided between the top plate and the rear surface of the top plate for transmitting a touch operation to the second detection electrode.

A touch operation on the operation touch switch section is an operation related to the heating operation of the heating section, and includes, for example, starting and stopping heating of the heating section, adjusting heat power, and the like.

On the other hand, the second detection electrode of the main power touch switch section detects a touch operation via a metallic transmission member. As a result, even if an object to be heated such as a pot or frying pan heated to a high temperature is accidentally placed on the operation panel portion, the metal transmission member of the main power touch switch portion will be deformed or damaged due to heat. never

In the unlikely event that the driving touch switch section is deformed or damaged due to heat and the touch operation cannot be normally detected by the first detection electrode provided in the driving touch switch section, the main power touch switch The main power can be turned off by touching the part.

In this way, even if the operation touch switch part is deformed or damaged, the heating operation can be stopped by touching the main power touch switch part, and the continuation of the heating operation in an abnormal state is reliably prevented. can do.

Further, in the present invention, it is preferable that at least a part of the operation panel is light transmissive, and that the driving touch switch section has the first detection electrodes formed on a light transmissive substrate. . Examples of materials for forming the light-transmitting substrate include polyester-based synthetic resins such as polyethylene terephthalate and polyethylene naphthalate.

According to this, for example, the light of a light-emitting element such as an LED that emits light in response to a touch operation can be transmitted through the driving touch switch section and can be visually recognized on the operation panel. Therefore, for example, by using a part of the top plate with a high aesthetic appearance such as glass as the operation panel, the light emission of the light emitting element corresponding to the touch operation is transmitted through the operation touch switch unit and can be confirmed from the top plate. can do.

BRIEF DESCRIPTION OF THE DRAWINGS The top view which shows the heating cooker of one Embodiment of this invention. Explanatory drawing which planarly viewed the operation panel part. FIG. 2 is an exploded perspective view schematically showing the configuration of a touch switch; Explanatory sectional drawing which shows a part of operation panel part.

One embodiment of the present invention will be described based on the drawings. FIG. 1 shows a gas stove 1, which is a heating cooker of this embodiment. As shown in FIG. 1, a gas stove 1 includes a top plate 2 covering the upper surface of a housing (not shown), a gas burner 3 protruding above the top plate 2, and an object to be heated (such as a pot or frying pan) on the gas burner 3. (not shown)).

The top plate 2 is made of heat-resistant tempered glass, has light transmittance, and has a dark color that makes it difficult to see the structures inside the housing. In FIG. 1, the color of the top plate 2 is colorless, but the top plate 2 employed in this embodiment is black, which is a dark color, as shown in FIG.

As shown in FIGS. 1 and 2, an operation panel section 5 is provided on a part of the front side of the top plate 2 . The operation panel portion 5 is continuously provided on the same smooth surface as the region of the top plate 2 where the trivets 4 are provided without any separation.

A main power supply mark 6 is provided on the surface of the operation panel section 5 . The main power supply mark 6 is formed by paint, engraving, aluminum inlay, or the like, and is provided so as not to disappear from the glass surface.

When the user touches the main power supply mark 6 or its vicinity with a finger (hereinafter referred to as touch operation), various marks made of light appear on the operation panel section 5 as shown in FIG. A user can perform a desired operation on the gas burner 3 by touching any mark with light.

As schematically shown in FIG. 3, the operation panel unit 5 is provided with a capacitive touch switch device 7, which enables the touch operation as described above. The touch switch device 7 includes a driving touch switch section 8 and a main power touch switch section 9 .

The driving touch switch unit 8 has a base 10 made of a synthetic resin film (for example, PET film or PEN film) having optical transparency, and includes a plurality of film electrodes 11a to 11d (first detection electrodes) for detecting touch operations, and a connecting portion 12 . The driving touch switch section 8 is attached in close contact with the lower surface of the operation panel section 5 integrated with the top plate 2 .
For convenience of explanation, only four film electrodes 11a to 11d are shown in FIG.

A control board 14 is attached via an assembly case 13 to the lower surface of the driving touch switch section 8 . The control board 14 includes LEDs 15a to 15d corresponding to the film electrodes 11a to 11d of the operation touch switch section 8 and a connector 16 to which the connection portion of the operation touch switch section 8 is connected, and is accommodated in the assembly case 13. be done.

3 and 4, the main power touch switch unit 9 includes a fixed electrode 17 (second detection electrode) provided on the control board 14 and a metal transmission electrode provided on the fixed electrode 17. It is composed of a member 18.

The metal transmission member 18 is formed of a metal spring plate material having a heat resistance higher than that of the base 10 of the operation touch switch unit 8. One end (lower end surface) of the metal transmission member 18 is connected to the fixed electrode 17, and the other end (upper end surface ) contacts the lower surface of the operation panel section 5 . At this time, since the metal transmission member 18 is made of a metal spring plate material, the upper end surface of the metal transmission member 18 is pressed against the lower surface of the operation panel portion 5, thereby improving the detection accuracy of the touch operation. The fixed electrode 17 is spaced apart from the top plate 2 by facing the rear surface of the top plate 2 via a metal transmission member 18 .

When the fixed electrode 17 detects a touch operation via the metal transmission member 18 of the main power touch switch section 9, the main power of the gas stove 1 is turned on or off. Power supply to the control board 14 is started when the main power supply is turned on, and power supply to the control board 14 is stopped when the main power supply is turned off.

Fuel gas is supplied to the gas burner 3 via a main solenoid valve provided in a fuel gas supply path (not shown). performed by That is, when the main power supply is turned on, power can be supplied to the main solenoid valve, and the main solenoid valve is opened by operating the operating touch switch unit 8. When the main power supply is turned off, the power supply to the main solenoid valve is stopped. Then, the original solenoid valve is closed. When the main solenoid valve closes, the combustion of the gas burner 3 stops.

As shown in FIG. 3, on the operation panel section 5, touch operation sections 19a to 19d and 20 are set at positions corresponding to the film electrodes 11a to 11d and the fixed electrode 17. As shown in FIG. As shown in FIG. 1, the touch operation unit 20 corresponding to the main power touch switch unit 9 is visible by the main power mark 6 even when the main power is off. None of the touch operation sections 19a to 19d corresponding to the section 8 have visible displays. Display (see FIG. 2) on each of the touch operation sections 19a to 19d is performed by LEDs 15a to 15d of the control board 14 shown in FIG. 3 when the main power is turned on.

As shown in FIG. 3 and partially shown in FIG. 4, the LEDs 15a to 15d of the control board 14 are provided at positions corresponding to the film electrodes 11a to 11d of the touch switch section 8 for operation. Light from the LEDs 15a to 15d passes through the small openings 21a to 21d of the assembly case 13, passes through the operation touch switch section 8, and reaches each surface of the operation panel section 5. As shown in FIG. As a result, as shown in FIG. 2, the light display appears on the top plate 2 (operation panel section 5) and becomes visible. Note that the positions of the LEDs 15a to 15d in FIG. 3 are shown for explanatory purposes, and are different from the display positions in the touch operation sections 19a to 19d shown in FIG. LEDs 15a to 15d are arranged so as to correspond to the display positions in .

As described above, the operation panel section 5 can display the marks of the touch operation sections 19a to 19d by the light from the LEDs 15a to 15d of the control board 14 because the operation touch switch section 8 has optical transparency. When the LEDs 15a to 15d of the control board 14 are not lit, the operation panel section 5 appears assimilated with the top plate 2 as shown in FIG.

By the way, as shown in FIG. 1 , the operation panel section 5 is provided on the top plate 2 and positioned in front of the gas burner 3 . For this reason, it is conceivable that, for example, a hot object to be heated, such as a deep fryer or a frying pan, may be carelessly placed on the operation panel section 5 .

1 to 4, when an object to be heated by gas burner 3 is placed on operation panel portion 5, operation touch switch portion 8 in close contact with the lower surface of operation panel portion 5 is placed on the object to be heated. affected by the heat of At this time, if high-temperature heat is transmitted to the driving touch switch portion 8 and deformation or damage occurs in the base 10, which is the synthetic resin film of the driving touch switch portion 8, the film electrodes 11a to 11d will perform the touch operation. It becomes difficult to detect it, and there is a possibility that normal heating operation cannot be expected. Therefore, in such a case, it is preferable to immediately stop the heating operation.

Therefore, in the present embodiment, by operating the touch operation unit 20 having the main power mark 6 displayed thereon, the fixed electrode 17 detects the touch operation via the metal transmission member 18 of the main power touch switch unit 9 . to turn off the main power supply.

That is, the fixed electrode 17 is spaced apart from the top plate 2 and detects a touch operation via the metallic transmission member 18 . Since the metal transmission member 18 is made of metal, it has high heat resistance and is not deformed or damaged by the heat from the top plate 2. Therefore, touch operations can be accurately detected. Moreover, since the main power supply mark 6 is not formed by light, it does not need to have optical transparency such as the touch switch section 8 for operation. Therefore, by providing the fixed electrode 17 via the metallic transmission member 18 to the touch operation unit 20 having the display of the main power supply mark 6, it is possible to reliably prevent the continuation of the abnormal heating operation.

In the present embodiment, the gas stove 1 is described as an example, but the present invention can be suitably adopted for a heating cooker provided with a glass top plate, and can also be adopted for an IH stove and the like. . Crystallized glass, for example, can be used as the plate-shaped glass that is the material of the top plate.

Further, in the present embodiment, the driving touch switch portion 8 formed of a synthetic resin film is adopted, but the present invention is not limited to this, and the driving touch switch portion of the present invention may be made of paper phenol, glass composite, or An electrode substrate using glass apoxy or the like may be employed. At this time, if the driving touch switch portion does not have light transmittance, a mark that does not disappear from the glass surface and is formed in the same manner as the main power mark 6 can be provided at the corresponding position of the operation panel portion 5. good.

DESCRIPTION OF SYMBOLS 1... Gas stove (heating cooker), 2... Top plate, 3... Gas burner (heating part), 5... Operation panel part, 7... Touch switch device, 8... Touch switch part for operation, 9... Touch switch part for main power supply , 10... Substrate 11a to 11d... Film electrode (first detection electrode) 14... Control board 17... Fixed electrode (second detection electrode) 18... Metal transmission member 19a to 19d, 20... Touch operation unit .

Claims (2)

A top plate on which an object to be heated can be placed, a heating portion for heating the object to be heated on the top plate, an operation panel portion made of an electrical insulator provided in a partial region of the top plate, A plurality of touch operation units set in the operation panel unit, a capacitive touch switch device that detects touch operations on each touch operation unit, and a control board that performs control according to the touch operation on each touch operation unit. In a heating cooker comprising
The touch switch device includes an operation touch switch unit for detecting a touch operation relating to the heating operation of the heating unit, and a main power touch switch unit for detecting a touch operation for turning ON/OFF the main power supply. ,
The driving touch switch unit includes a first detection electrode for detecting a touch operation provided in contact with or in close proximity to the back surface of the top plate,
The main power touch switch section includes: a second detection electrode for detecting a touch operation provided farther away from the back surface of the top plate than the first detection electrode; and a metallic transmission member provided between the second detection electrode and the rear surface thereof for transmitting a touch operation to the second detection electrode. At least a portion of the operation panel is light transmissive,
2. The heating cooker according to claim 1, wherein the operating touch switch section has the first detection electrode formed on a light-transmissive substrate.

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