CN109419320B - Rice cooker - Google Patents
Rice cooker Download PDFInfo
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- CN109419320B CN109419320B CN201810933666.0A CN201810933666A CN109419320B CN 109419320 B CN109419320 B CN 109419320B CN 201810933666 A CN201810933666 A CN 201810933666A CN 109419320 B CN109419320 B CN 109419320B
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- electrode
- wiring
- film
- rice cooker
- peripheral edge
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
Abstract
The invention provides a rice cooker, which informs abnormal state of a touch sensor. The rice cooker comprises: an outer cover, on the upper part of which an outer cover panel is arranged; a touch sensor having a film on which a1 st electrode, a 2 nd electrode, and a 3 rd electrode, and a1 st wiring connected to the 1 st electrode, a 2 nd wiring connected to the 2 nd electrode, and a 3 rd wiring connected to the 3 rd electrode are arranged, the 1 st electrode, the 2 nd electrode, and the 3 rd electrode being positioned below the outer cover panel; a sensor abnormality detection unit that detects an abnormal state of the touch sensor; and a notification unit that notifies an abnormal state of the touch sensor, wherein the 3 rd wiring is arranged closer to an outer peripheral edge of the film than the 1 st wiring and the 2 nd wiring, and the sensor abnormality detection unit detects the abnormal state of the touch sensor based on an electrostatic capacitance value of the 3 rd electrode.
Description
Technical Field
The present disclosure relates to a rice cooker, and more particularly, to an operating part of a rice cooker.
Background
Conventionally, an operation portion for giving various instructions to the rice cooker by a user is disposed on an upper surface of an outer lid of the rice cooker. As the operation portion, there are an operation portion using a button and an operation portion using a touch sensor. If the operation portion of the touch sensor is used, the protruding portion may not be provided on the outer lid of the rice cooker. Thereby, the user wipes the outer cap more easily. Patent document 1 describes a rice cooker having a touch panel display as a touch sensor.
The rice cooker of patent document 1 has an operation unit disposed above a display unit constituted by a liquid crystal display. The operation unit is a touch panel having light transmissivity. The display unit performs key display representing operation keys. The input receiving portion of the operation unit is disposed opposite to the key display. Various operation keys are formed in a virtual manner by combining the key display and the input receiving portion.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2015-173787
However, even if a mechanical failure occurs in the touch sensor of the touch panel, the touch sensor is less likely to appear in appearance than a button-type operation unit, and the user is less likely to perceive an abnormal state. In addition, if a circuit failure occurs in the touch sensor of the touch panel, the user cannot be informed of the abnormal state from the appearance. Thus, if the touch sensor is mechanically or electrically failed, the user cannot operate the rice cooker. In addition, the rice cooker does not inform the user of the abnormal states of the touch sensors. Therefore, as long as the user does not use the operation portion of the abnormal state by himself/herself, the user cannot know the abnormal state. As a result, the user perceives the abnormal state of the touch sensor only when the rice cooker is used.
Disclosure of Invention
Accordingly, an object of the present disclosure is to solve the above problems and provide a rice cooker for notifying an abnormal state of a touch sensor.
To achieve the object, a rice cooker according to one aspect of the present disclosure includes:
an outer cover, on the upper part of which an outer cover panel is arranged;
a capacitive and self-capacitive touch sensor including a film on which a1 st electrode, a 2 nd electrode, and a 3 rd electrode positioned below the outer cover panel, a1 st wiring connected to the 1 st electrode, a 2 nd wiring connected to the 2 nd electrode, and a 3 rd wiring connected to the 3 rd electrode are arranged;
a sensor abnormality detection unit connected to each of the 1 st, 2 nd and 3 rd wirings and detecting an abnormal state of the touch sensor; and
a notification section that notifies an abnormal state of the touch sensor detected by the sensor abnormality detection section,
the 3 rd wiring is arranged closer to an outer peripheral edge of the film than the 1 st wiring and the 2 nd wiring,
the sensor abnormality detection unit detects an abnormal state of the touch sensor based on a capacitance value of the 3 rd electrode. The sensor abnormality detection unit detects an abnormal state of the touch sensor when a potential of a capacitance value of the 3 rd electrode among the 1 st electrode, the 2 nd electrode, and the 3 rd electrode changes.
Effects of the invention
A rice cooker capable of notifying an abnormal state of a touch sensor can be provided.
Drawings
Fig. 1 is a schematic sectional view of a rice cooker of an embodiment.
Fig. 2 is a perspective view schematically showing the rice cooker of fig. 1.
Fig. 3 is an exploded perspective view of an outer lid of the rice cooker of fig. 1.
Fig. 4 is a plan view of the film provided with the electrode.
Fig. 5 is a partial sectional view of the outer lid.
Fig. 6 is a partially enlarged sectional view of the outer lid.
Fig. 7 is a functional block diagram of the operation unit.
Fig. 8 is an explanatory diagram showing an abnormal state.
Fig. 9 is a graph showing the order of electrostatic capacitance values in a normal state.
Fig. 10 is a graph showing the order of capacitance values in an abnormal state.
Fig. 11 is a circuit diagram of a low-pass filter.
Fig. 12 is a plan view of a modified membrane in which electrodes are arranged.
Fig. 13 is a plan view of a modified film in which electrodes are arranged.
Description of the reference symbols
1: rice cooker main body, 1 a: pan storage section, 1 b: upper frame, 1 ba: cylindrical portion, 1 bb: flange portion, 1 bc: water tank storage section, 1 c: coil base, 2: pan, 2 a: flange portion, 3: outer cover, 3A: hinge axis, 3 a: outer cover panel, 3 b: outer lid body portion, 3 d: concave portion, 3 da: steam release hole, 4: inner lid, 4a, 4 b: steam discharge hole, 4 c: steam supply hole 5: pan bottom heating means (heating portion), 5 a: bottom inner heating coil, 5 b: bottom external heating coil, 6: pot temperature sensor, 7: torsion coil spring, 8: lid opening device, 8A: hook shaft, 8B: lid opening button, 9: steam drum, 9 a: steam release hole, 10: pressure-suppressing valve, 11: pressure valve, 12: pressure valve moving mechanism, 13: control unit, 14: display unit, 15: operation unit, 21: input unit, 21 a: 1 st input section, 21 b: 2 nd input unit, 21 c: 3 rd input unit, 21 d: 4 th input unit, 21 e: 5 th input unit, 21 f: input 6, 21 g: 7 th input unit, 21 h: 8 th input section, 21 i: 9 th input section, 30: touch sensor, 31: film, 31 a: film body, 31 b: film wiring section, 31 c: positioning portion, 31 d: outer peripheral edge, 31 e: connection portion, 32: adhesive sheet, 33: substrate, 35: substrate holder, 37: electrode, 37 a: 1 st electrode, 37 b: electrode 2, 37 c: electrode No. 3, 37 ca: through hole, 37 d: 4 th electrode, 37 e: electrode No. 5, 37 ea: through-hole, 37 f: electrode No. 6, 37 fa: through-hole, 37 g: electrode 7, 37 h: 8 th electrode, 37 i: electrode 9, 39: guard electrode, 39 a: left electrode portion, 39 aa: front end portion, 39 b: center electrode portion, 39 c: right electrode portion, 39 ca: front end, 40: controller IC, 41: wiring, 41 a: 1 st wiring, 41 b: 2 nd wiring, 41 c: 3 rd wiring, 41 d: 4 th wiring, 41 e: 5 th wiring, 41 f: 6 th wiring, 41 g: 7 th wiring, 41 h: 8 th wiring, 41 i: 9 th wiring, 43, 43 a: 10 th wiring, 44: 11 th wiring, 45: a carbon film.
Detailed Description
One aspect of the present disclosure is a rice cooker having: an outer cover, on the upper part of which an outer cover panel is arranged; a capacitive and self-capacitive touch sensor including a film on which a1 st electrode, a 2 nd electrode, and a 3 rd electrode positioned below the outer cover panel, a1 st wiring connected to the 1 st electrode, a 2 nd wiring connected to the 2 nd electrode, and a 3 rd wiring connected to the 3 rd electrode are arranged; a sensor abnormality detection unit connected to each of the 1 st, 2 nd and 3 rd wirings and detecting an abnormal state of the touch sensor; and a notification section that notifies an abnormal state of the touch sensor detected by the sensor abnormality detection section, the 3 rd wiring being arranged closer to an outer peripheral edge of the film than the 1 st wiring and the 2 nd wiring, the sensor abnormality detection section detecting the abnormal state of the touch sensor based on an electrostatic capacitance value of the 3 rd electrode.
Further, the sensor abnormality detection unit may detect an abnormal state of the touch sensor when a rank of a capacitance value of the 3 rd electrode among the 1 st electrode, the 2 nd electrode, and the 3 rd electrode changes.
Further, the outer surface of the outer cover panel may have a1 st input portion disposed to face the 1 st electrode and a 2 nd input portion disposed to face the 2 nd electrode with the outer cover panel interposed therebetween,
the 3 rd electrode is an electrode having no input portion disposed to face each other.
Further, the 3 rd electrode may be configured to surround the 1 st electrode and the 2 nd electrode.
Further, the outer surface of the cover panel may have a1 st input portion disposed to face the 1 st electrode, a 2 nd input portion disposed to face the 2 nd electrode, and a 3 rd input portion disposed to face the 3 rd electrode with the cover panel interposed therebetween.
In addition, the area of the 3 rd electrode may be larger than the areas of the 1 st electrode and the 2 nd electrode.
Further, the film may have: a film main body portion in which the 1 st electrode, the 2 nd electrode, and the 3 rd electrode are disposed; a film wiring section located between the film main body section and the sensor abnormality detection section, wherein a part of each of the 1 st, 2 nd, and 3 rd wirings is disposed in the film wiring section; and a connecting portion that connects the film main body portion and the film wiring portion, the connecting portion having, on an outer peripheral edge thereof: a curved 1 st outer peripheral edge connected to one outer peripheral edge of the film wiring portion and an outer peripheral edge of the film main body portion; and a curved 2 nd outer peripheral edge connected to the other outer peripheral edge of the film wiring portion and the outer peripheral edge of the film main body portion, a curvature radius of the 2 nd outer peripheral edge being smaller than a curvature radius of the 1 st outer peripheral edge, and the 3 rd wiring being arranged closer to the 2 nd outer peripheral edge than the 1 st wiring and the 2 nd wiring.
Further, carbon films may be disposed on the lower surfaces of the 1 st, 2 nd, and 3 rd electrodes, respectively.
Further, an LED may be provided under the 1 st electrode, and the 1 st electrode may have a hole through which light of a Light Emitting Diode (LED) passes.
Further, the film may have a positioning portion for positioning with respect to the outer cover panel.
Further, it is also possible that the outer lid panel is made of acrylic, and the film is attached to the lower surface of the outer lid panel by an acrylic adhesive material.
In addition, the 2 nd wiring may be disposed between the 1 st wiring and the 3 rd wiring, and the sensor abnormality detection unit may detect an abnormal state based on a capacitance value of the 1 st electrode.
(embodiment mode)
Hereinafter, a rice cooker according to an embodiment of the present disclosure will be described. Fig. 1 is a schematic sectional view of a rice cooker according to an embodiment of the present disclosure. Fig. 2 is a perspective view of a rice cooker according to an embodiment of the present disclosure.
As shown in fig. 1, the rice cooker of the present embodiment includes a rice cooker main body 1 and a pan 2. A pot accommodating part 1a is formed inside the rice cooker body 1. The rice cooker body 1 has a substantially bottomed cylindrical shape. The pot 2 is accommodated in the pot accommodating portion 1 a. The pan 2 is filled with cooked material such as rice and water. An outer cover 3 is installed on the upper portion of the rice cooker body 1. The outer lid 3 can open and close the upper opening of the rice cooker body 1. The outer lid 3 is hollow. An inner lid 4 capable of sealing the upper opening of the pan 2 is attached to the inner side of the outer lid 3 (the side covering the upper opening of the pan 2). The inner lid 4 is detachably attached to the outer lid 3. The inner lid 4 is substantially disc-shaped. In the present embodiment, the outer lid 3 and the inner lid 4 constitute a lid body openably and closably covering the upper opening of the pan 2.
The pot accommodating portion 1a of the rice cooker main body 1 is composed of an upper frame 1b and a coil base 1 c. The upper frame 1b has a cylindrical portion 1ba and a flange portion 1 bb. The cylindrical portion 1ba is disposed with a predetermined gap from the side wall of the accommodated pot 2. The flange portion 1bb protrudes outward from the upper portion of the cylindrical portion 1ba, and is fitted to the inner peripheral portion of the upper opening of the rice cooker main body 1. The upper end of the cylindrical portion 1ba supports a flange portion 2a provided around the upper opening of the pan 2.
The shape of the coil base 1c is a bottomed cylindrical shape corresponding to the shape of the lower portion of the pan 2. The upper portion of the coil base 1c is attached to the lower end portion of the cylindrical portion 1ba of the upper frame 1 b. A pan bottom heating means 5, which is an example of a heating portion for heating (e.g., induction heating) the pan 2, is attached to the outer peripheral surface of the coil base 1 c. The pan bottom heating unit 5 is composed of a bottom inner heating coil 5a and a bottom outer heating coil 5 b. The bottom inner heating coil 5a is disposed so as to face the periphery of the central portion of the bottom of the pan 2 through the coil base 1 c. The bottom outer heating coil 5b is disposed so as to face a corner of the bottom of the pan 2 with the coil base 1c interposed therebetween.
The central portion of the bottom of the coil base 1c is provided with an opening. A pot temperature sensor 6, which is an example of a pot temperature detecting unit for measuring the temperature of the pot 2, is disposed in the opening. Further, the pot temperature sensor 6 is disposed to be able to abut on the bottom of the pot 2 housed in the pot housing portion 1 a. Since the temperature of the pan 2 is substantially the same as the temperature of the material to be cooked in the pan 2, the temperature of the material to be cooked in the pan 2 can be detected by detecting the temperature of the pan 2 by the pan temperature sensor 6.
The outer lid 3 has an outer lid panel 3a constituting the upper surface outline of the outer lid 3 and an outer lid body portion 3b into which the outer lid panel 3a is fitted. The material of the outer cover panel 3a attached to the upper portion of the outer cover 3 is, for example, acrylic. The material of the outer lid main body portion 3b is ABS (Acrylonitrile Butadiene Styrene) resin. Further, the outer lid 3 has a hinge axis 3A. The hinge shaft 3A is an opening/closing shaft of the outer lid 3. Both ends of the hinge shaft 3A are rotatably fixed to the upper frame 1b of the rice cooker body 1. A torsion coil spring 7 is mounted around the hinge shaft 3A. The torsion coil spring 7 elastically biases the outer lid 3 in a direction (i.e., an opening direction) away from the upper opening of the pan 2 about the hinge shaft 3A.
The interior of the outer lid 3 is provided with lid opening means 8. The lid opening means 8 is coupled to a portion of the rice cooker main body 1, thereby maintaining a state in which the outer lid 3 closes the upper opening of the pot 2. On the other hand, when the lid opening button 8B (see fig. 2) provided on the outer lid 3 is pressed in a state where the outer lid 3 closes the upper opening of the pan 2, the lid opening device 8 rotates in the arrow a1 direction about the hook shaft 8A. Thereby, the lid opener 8 is disengaged from a part of the rice cooker body 1, and the outer lid 3 is rotated in a direction away from the upper opening of the pot 2 centering on the hinge shaft 3A by the biasing force of the torsion coil spring 7. Thereby, the outer lid 3 is in an open state not closing the upper opening of the pan 2. The outer lid 3 is configured to stop the rotation when rotated by 90 degrees about the hinge shaft 3A from the position closing the upper opening of the pot 2, for example.
A recess 3d is provided in the vicinity of the hinge shaft 3A of the outer cover panel 3A. The steam drum 9 is detachably attached to the recess 3 d. A steam release hole 3da is provided at the bottom of the recess 3d so that the excess steam in the boiler 2 can be discharged to the steam drum 9. A steam release hole 9a is provided at an upper wall of the steam drum 9 so that the excessive steam inside the pot 2 can be discharged to the outside of the rice cooker. A steam temperature sensor (not shown) for detecting the temperature of steam is provided at any position on the steam discharge path from the inside of the pot 2 to the steam release hole 9 a.
The inner lid 4 is provided with a steam discharge hole 4a for discharging steam in the boiler 2 and a steam discharge hole 4b for communicating the inside of the boiler 2 with the inside of the lid. The diameter of the steam discharge hole 4b is set to be larger than the diameter of the steam discharge hole 4a, for example, 2 times or more the diameter of the steam discharge hole 4 a. The diameter of the steam discharge hole 4a is, for example, 4mm, and the diameter of the steam discharge hole 4b is, for example, 10 mm.
The inner lid 4 is provided with a pressure-reducing valve 10 capable of opening and closing the steam discharge hole 4a, and a pressure valve 11 capable of opening and closing the steam discharge hole 4 b.
The pressure-suppressing valve 10 is a valve that suppresses the pressure in the boiler 2 from rising to a predetermined value (for example, 1.2 atm) or more higher than the atmospheric pressure. In the present embodiment, the pressure-suppressing valve 10 is formed of a ball, and closes the steam discharge hole 4a by its own weight. On the other hand, when the pressure in the boiler 2 is higher than its own weight (for example, 1.2 atmospheres or higher), the pressure-suppressing valve 10 is pushed only by the pressure in the boiler 2 to be separated from the steam discharge hole 4a, and opens the steam discharge hole 4 a. The pressure-suppressing valve 10 may be configured by a closing member that closes the steam discharge hole 4a, and a spring that biases the closing member so as to close the steam discharge hole 4 a. According to this configuration, when the pressure in the boiler 2 rises to a predetermined value or more higher than the atmospheric pressure, the closing member is moved against the urging force of the spring by the pressure, and the steam discharge hole 4a is opened.
The pressure valve 11 is configured to move between a closing position closing the steam discharge hole 4b and an opening position opening the steam discharge hole 4 b.
The outer lid 3 is provided with a pressure valve moving mechanism 12. The pressure valve moving mechanism 12 moves the pressure valve 11 between the closed position and the open position so as to open and close the steam discharge hole 4 b. In fig. 1, the pressure valve moving mechanism 12 holds the pressure valve 11 in the closed position. This allows the pressure in the pan 2 to be increased (for example, from 1.0 atmosphere to 1.2 atmospheres). The pressure valve moving mechanism 12 is configured to move the pressure valve 11 from the closed position to the open position by pressing the pressure valve 11 at a pressure greater than a predetermined value (e.g., 1.2 atmospheres) under the control of the control unit 13, which will be described later, at a predetermined timing when the pressure in the pan 2 becomes equal to or greater than the predetermined value (e.g., 1.2 atmospheres). Thereby, the pressure in the pan 2 can be reduced (for example, from 1.2 atm to 1.0 atm).
A control unit 13 is mounted inside the rice cooker main body 1. The control Unit 13 includes a CPU (Central Processing Unit) and a storage Unit such as a memory. The storage portion stores a plurality of cooking steps for cooking rice. Here, the control part 13 can perform each of a plurality of cooking processes (for example, a new rice process, an old rice process, a white rice process, a glutinous rice process, a brown rice process, etc.). The "rice cooking step" includes 4 main steps of a preheating step, a temperature raising step, a boiling maintaining step, and a stewing step. The plurality of cooking processes correspond to the plurality of cooking steps, respectively. The "cooking step" refers to a sequence of cooking for performing a cooking action by the rice cooker. The cooking step includes parameters such as energization time, heating temperature, heating time, and heating output, which are respectively determined in advance. The control unit 13 controls the pot bottom heating means 5 and the pressure valve moving mechanism 12 based on the selected cooking process and the temperature detected by the pot temperature sensor 6, and executes the cooking process.
Further, a display unit 14 for displaying various information such as a cooking process and a cooking time is attached to the outer lid 3. The display unit 14 is, for example, a liquid crystal display.
Further, an operation unit 15 for receiving instructions such as selection and cancellation of a cooking process is disposed in the outer cover 3. The operation unit 15 includes an input unit 21 that is touched by a finger of the user, and a touch sensor 30 that detects the finger of the user touching the input unit 21. The input portion 21 is a specific region shown on the outer surface of the outer cover 3.
The input unit 21 includes, for example, the 1 st input unit 21a to the 9 th input unit 21 i. The 1 st input unit 21a accepts selection of a rice type. The 2 nd input unit 21b receives a selection of a specific cooking process from among a plurality of cooking processes. The 3 rd input unit 21c receives an instruction to execute the heat retention. The 4 th input unit 21d receives cancellation of various instructions being executed. The 5 th input unit 21e receives an instruction to execute a reservation. The 6 th input unit 21f receives an instruction to start cooking. The 7 th input unit 21g accepts the specification of various selected items. The 8 th input unit 21h receives an instruction to change the selection item displayed on the display unit 14 in the forward direction when a plurality of selection items are arranged in a program. The 9 th input unit 21i receives an instruction to change the selection item displayed on the display unit 14 in the backward direction. The user can refer to various information displayed on the display unit 14 and make contact with the 1 st to 9 th input units 21a to 21i to give various instructions to the rice cooker.
Next, referring to fig. 3 and 4, the touch sensor 30 mounted on the outer cover 3 will be described. Fig. 3 is an exploded perspective view of the outer lid 3. Fig. 4 is a plan view of the film provided with the electrode. The touch sensor 30 is of a capacitance type and a self-capacitance type. The touch sensor 30 includes a film 31, an electrode 37 disposed on the film 31, and a wiring 41 connected to the electrode 37. The touch sensor 30 includes a guard electrode 39 disposed on the film 31, and a wire 43 connected to the guard electrode 39. The touch sensor 30 and the substrate 33 are housed in the outer cover 3. In the outer cover 3, the electrode 37 of the touch sensor 30 is disposed to face the input unit 21. The display unit 14 is fixed to the substrate 33. The substrate holder 35 is fitted in the hollow portion of the outer cover body portion 3b, and the substrate 33 is supported by the substrate holder 35.
The film 31 has a film main body portion 31a, a film wiring portion 31b, and a connecting portion 31 e. The electrode 37 and the guard electrode 39 are disposed on the lower surface of the film body 31 a. The film body 31a is U-shaped when viewed from above as shown in fig. 3. A part of the wiring 41 connected to the electrode 37 and a wiring 43 connected to the guard electrode 39 are disposed on the lower surface of the film wiring section 31 b. The film wiring portion 31b is in the shape of a band when viewed from above. The connecting portion 31e is a connecting portion between the film main body portion 31a and the film wiring portion 31 b.
The film 31 is a colorless and transparent film for a circuit. The material of the film 31 is, for example, PET (Polyethylene terephthalate). The film wiring portion 31b is bent a plurality of times and connected to a controller IC (Integrated Circuit) 40 via a connector. On the lower surface of the film body 31a, a1 st electrode 37a, a 2 nd electrode 37b, a 3 rd electrode 37c, a 4 th electrode 37d, a 5 th electrode 37e, a 6 th electrode 37f, a 7 th electrode 37g, an 8 th electrode 37h, and a 9 th electrode 37i are arranged. The 1 st electrode 37a is disposed to face the 1 st input portion 21 a. Similarly, the 2 nd electrode 37b is disposed to face the 2 nd input unit 21b, the 3 rd electrode 37c is disposed to face the 3 rd input unit 21c, the 4 th electrode 37d is disposed to face the 4 th input unit 21d, the 5 th electrode 37e is disposed to face the 5 th input unit 21e, the 6 th electrode 37f is disposed to face the 6 th input unit 21f, the 7 th electrode 37g is disposed to face the 7 th input unit 21g, the 8 th electrode 37h is disposed to face the 8 th input unit 21h, and the 9 th electrode 37i is disposed to face the 9 th input unit 21 i. Further, a guard electrode 39 is disposed around the 1 st to 9 th electrodes 37a to 37i, particularly around the outer periphery of the rice cooker. In addition, the 1 st to 9 th electrodes 37a to 37i are collectively referred to as electrodes 37. The electrode 37 and the guard electrode 39 are located below the outer cover panel 3 a.
The electrodes 37 disposed on the film main body portion 31a are connected to the controller IC40 via wires 41. That is, the 1 st electrode 37a is connected to the controller IC40 via the 1 st wiring 41a, the 2 nd electrode 37b is connected to the controller IC40 via the 2 nd wiring 41b, the 3 rd electrode 37c is connected to the controller IC40 via the 3 rd wiring 41c, the 4 th electrode 37d is connected to the controller IC40 via the 4 th wiring 41d, the 5 th electrode 37e is connected to the controller IC40 via the 5 th wiring 41e, the 6 th electrode 37f is connected to the controller IC40 via the 6 th wiring 41f, the 7 th electrode 37g is connected to the controller IC40 via the 7 th wiring 41g, the 8 th electrode 37h is connected to the controller IC40 via the 8 th wiring 41h, and the 9 th electrode 37i is connected to the controller IC40 via the 9 th wiring 41 i. The guard electrode 39 is connected to the controller IC40 via a 10 th wiring 43. The 1 st to 9 th wires 41a to 41i are collectively referred to as a wire 41. Each of the wiring lines 41 and the 10 th wiring line 43 is formed on the film main body portion 31a and the film wiring portion 31 b. The 10 th wire 43 is arranged closer to the outer peripheral edge 31d of the film 31 than the 1 st to 9 th wires 41a to 41 i. In particular, in the present embodiment, the 10 th wire 43 is disposed so as to be close to the outer peripheral edge 31d on the outer side (left side in fig. 4) of the rice cooker out of the outer peripheral edge 31d of the film 31.
The guard electrode 39 has: a left electrode portion 39a disposed so as to surround the 1 st to 3 rd electrodes 37a to 37 c; a central electrode portion 39b disposed so as to surround the 4 th to 6 th electrodes 37d to 37 f; and a right electrode portion 39c disposed so as to surround the 7 th to 9 th electrodes 37g to 37 i. The left electrode portion 39a, the center electrode portion 39b, and the right electrode portion 39c are connected to each other. The guard electrode 39 is connected to the 10 th wiring 43 at the tip 39aa of the left electrode portion 39 a. The 11 th wiring 44 extends from the front end 39ca of the right electrode portion 39c to the connection portion 31e between the film main body 31a and the film wiring portion 31 b. The 10 th wiring 43 and the 11 th wiring 44 are arranged closer to the outer peripheral edge of the film 31 than the respective wirings 41. The outer peripheral edge means a side of the outer peripheral edge close to the outside of the rice cooker. The total area of the guard electrodes 39 is larger than the area of each of the 1 st to 9 th electrodes 37a to 37 i.
The input portion 21 is not disposed at a position facing the guard electrode 39 on the cover panel 3 a. That is, the guard electrode 39 does not have a corresponding input portion. Therefore, when the state in which the capacitance value exceeds the predetermined value is set to the ON (ON) state, the protective electrode 39 is not turned to the ON state by the contact of the user's finger. However, the guard electrode 39 may be turned ON by water or foreign matter adhering to the cover panel 3 a. In this way, when the guard electrode 39 is in the ON state, there is a possibility that the other electrodes 37 are also erroneously (i.e., although there is no contact by the user's finger) in the ON state. Then, the control unit 13 controls not to receive an input from the input unit 21 when the guard electrode 39 is in the ON state.
The film main body portion 31a is fixed to the outer cover panel 3a by the adhesive sheet 32, but the film wiring portion 31b is not fixed. Therefore, the film wiring section 31b swings each time the outer lid 3 is opened and closed, and therefore mechanical stress is likely to act on the connection section 31e between the film main body section 31a and the film wiring section 31 b. When the user opens the outer lid 3, the impact stress is applied to the connecting portion 31e between the film main body portion 31a and the film wiring portion 31b when the outer lid 3 touches a shelf or the like. As a result, the connecting portion 31e between the film main body portion 31a and the film wiring portion 31b is easily cracked.
In fig. 4, the left outer peripheral edge of the connecting portion 31e of the present embodiment is referred to as an outer peripheral edge P1 (an example of the 1 st outer peripheral edge of the present disclosure). The outer peripheral edge on the right side of the connecting portion 31e is referred to as an outer peripheral edge P2 (an example of the 2 nd outer peripheral edge of the present disclosure). The outer peripheral edge P1, which is the connection portion between the left outer peripheral edge of the film wiring portion 31b and the outer peripheral edge of the film main body portion 31a, has a curved shape. The curved shape of the outer peripheral edge P1 is a curved shape protruding toward the film body portion 31 a. Further, the outer peripheral edge P2, which is a connection portion between the right outer peripheral edge of the film wiring portion 31b and the outer peripheral edge of the film main body portion 31a, also has a curved shape. The curved shape of the outer peripheral edge P2 is a curved shape protruding toward the film body portion 31 a. In the case of the curved shape, cracks are less likely to occur in the outer peripheral edges P1 and P2, as compared with the case where the outer peripheral edges P1 and P2 are rectangular. Further, if the curvature radius of the curved shape is increased, cracks are less likely to occur. The 10 th wiring 43 is disposed closer to the outer peripheral edge P1 than the wiring 41.
As shown in fig. 4, through holes 37ca, 37ea, and 37fa penetrating in the vertical direction are formed in the 3 rd electrode 37c, the 5 th electrode 37e, and the 6 th electrode 37f, respectively. Through holes are also formed in the regions of the membrane main body 31a corresponding to the extensions of the through holes 37ca, 37ea, and 37 fa. An LED (Light Emitting Diode) is disposed below the 3 rd electrode 37c, the 5 th electrode 37e, and the 6 th electrode 37 f. The through holes 37ca, 37ea, and 37fa can suppress the reduction of the light amount of the LED by the electrode and the film 31. Even if the film 31 is disposed slightly offset from the LED, the light of the LED can be observed through the through holes 37ca, 37ea, and 37fa by diffusion of the light of the LED.
The film 31 has a positioning portion 31c for positioning with respect to the outer cover panel 3 a. Therefore, when the film 31 is attached to the outer cover panel 3a using the adhesive sheet 32, the rotation of the film 31 can be suppressed. This can suppress positional deviation between the input unit 21 and the electrode 37, and suppress malfunction of the operation unit 15. The positioning portion 31c has a shape of a recess, a hole, or the like. A protruding portion protruding downward from the inner surface of the outer cover panel 3a is fitted into the positioning portion 31 c.
Refer to fig. 5 and 6. Fig. 5 is a partial sectional view of the outer lid 3. Fig. 6 is a partially enlarged sectional view of the outer lid 3. The film body 31a is fixed to the lower surface of the outer cover panel 3a by the adhesive sheet 32 so that the electrodes 37 disposed on the lower surface of the film body 31a face the input portions 21 on the outer cover panel 3 a. That is, the 1 st electrode 37a faces the 1 st input portion 21a, the 2 nd electrode 37b faces the 2 nd input portion 21b, the 3 rd electrode 37c faces the 3 rd input portion 21c, the 4 th electrode 37d faces the 4 th input portion 21d, the 5 th electrode 37e faces the 5 th input portion 21e, the 6 th electrode 37f faces the 6 th input portion 21f, the 7 th electrode 37g faces the 7 th input portion 21g, the 8 th electrode 37h faces the 8 th input portion 21h, and the 9 th electrode 37i faces the 9 th input portion 21 i.
The adhesive sheet 32 is formed using an acrylic adhesive material. For example, the adhesive sheet 32 is formed by applying an acrylic adhesive material to a base material made of, for example, a nonwoven fabric. Since the film 31 is attached to the lower surface of the acrylic outer cover panel 3a using the adhesive sheet 32 of an acrylic adhesive material, the outer cover panel 3a and the adhesive sheet 32 have good compatibility, and the adhesiveness can be improved.
The outer cover panel 3a, the adhesive sheet 32, and the film 31 function as a dielectric layer. When the user touches any of the input portions 21, a new capacitance is generated between the finger and the electrode 37 facing the finger. Therefore, the capacitance value of the electrode 37 facing the input portion 21 in contact therewith increases. By detecting the increased capacitance value by the controller IC40, the input unit 21 touched by the user can be detected.
A carbon film 45 is formed on the lower surfaces of the electrode 37 and the guard electrode 39. After silver patterns as the electrode 37 and the guard electrode 39 are formed on the film 31, a carbon film 45 is formed by mask printing carbon. The carbon film 45 may be formed to have an area larger than the areas of the electrode 37 and the guard electrode 39 so as to cover the electrode 37 and the guard electrode 39. The carbon film 45 is applied to the lower surfaces of the electrode 37 and the guard electrode 39, thereby preventing malfunction due to steam leaking from the inner lid 4. Further, a protective layer may be formed on the lower surface of the carbon film 45 to coat the electrode 37 and the protective electrode 39.
A controller IC40 connected to the electrodes 37 and 39 and a control unit 13 connected to the controller IC are disposed on the lower surface of the substrate 33. Further, a display unit 14 connected to the control unit 13 is disposed on the upper surface of the substrate 33.
Next, refer to fig. 7. Fig. 7 is a functional block diagram of the operation unit. The controller IC40 detects an abnormal state of the touch sensor 30. The controller IC40 detects capacitance values of the electrodes 37 and the guard electrode 39 in a state where the user does not touch any input unit 21, and detects the order of the capacitance values. Further, it is determined whether or not the detected order of the capacitance value is a predetermined order. The predetermined bit order is set in advance and stored in the controller IC 40. The controller IC40 determines that the touch sensor 30 is in the normal state when the detected capacitance value has a predetermined rank, and determines that the touch sensor 30 is in the abnormal state when the detected capacitance value has a rank other than the predetermined rank. The controller IC40 has a microprocessor or FPGA (Field-Programmable Gate Array). Further, the controller IC40 may also have a memory. The memory stores control software. The control software is software executable by the microprocessor or FPGA when an abnormal state is detected. Further, the controller IC40 may be incorporated with the control section 13.
When the power of the rice cooker is turned on by inserting a power cord or the like, the control unit 13 instructs the controller IC40 to determine whether the touch sensor 30 is normal or abnormal. When a signal indicating that the touch sensor 30 is abnormal is input from the controller IC40, the control unit 13 displays an image indicating that the touch sensor 30 is abnormal on the display unit 14. The display unit 14 displays, for example, the navigation shown in fig. 8, so that the user can recognize an abnormality of the touch sensor 30.
Next, a method of detecting an abnormal state of the touch sensor 30 by the controller IC40 will be described. When the control unit 13 sends an instruction for determining the state of the touch sensor 30, the controller IC40 measures capacitance values of the 1 st to 9 th electrodes 37a to 37i of the electrodes 37 and the guard electrode 39, respectively, and detects the order of the capacitance values. In the case where there is no disconnection, the order of the capacitance value becomes the order of the size of the area of the electrode.
The number of the electrode areas is, for example, guard electrode 39 > 4 th electrode 37d > 5 th electrode 37e > 6 th electrode 37f > 1 st electrode 37a > 9 th electrode 37i > 2 nd electrode 37b > 8 th electrode 37h > 7 th electrode 37g > 3 rd electrode 37 c. In this case, as shown in fig. 9, the electrostatic capacitance value in the normal state is the guard electrode 39 in the first order and the 3 rd electrode 37c in the last order. The electrostatic capacitance values of these electrodes are about 1pF to 2pF, respectively.
When a disconnection failure occurs in the guard electrode 39, the capacitance of the electrode located in front of the disconnection portion is not detected. Therefore, only the potential of the guard electrode 39 changes with respect to the potential of the electrostatic capacitance, and is no longer the first bit. Further, a disconnection often occurs at the outer peripheral edge P1 of the connecting portion 31e of the film main body portion 31a and the film wiring portion 31 b. When the outer peripheral edge P1 is disconnected, the electrostatic capacitance of the guard electrode 39 is almost absent, and therefore, as shown in fig. 10, the electrostatic capacitance is the last bit among the bits of the electrostatic capacitance. In this way, when the area of the electrode used as a reference for the abnormality detection is larger than the area of the other electrode, the range of variation in the capacitance value can be increased in the normal state and the abnormal state, and the abnormal state can be detected with high accuracy.
The 10 th wire 43 is arranged closer to the outer peripheral edge 31d of the film 31 than the 1 st to 9 th wires 41a to 41 i. Therefore, when a crack occurs in the film 31, the 10 th wire 43 is cut off before the 1 st wire 41a to the 9 th wire 41i because the crack is cut from the outer periphery of the film 31. When the 10 th wiring 43 is disconnected, the capacitance of the protective electrode 39 decreases.
The guard electrode 39 is also disposed along the outer periphery of the film 31, and is disposed closer to the outer peripheral edge 31d of the film 31 than the 1 st to 9 th electrodes 37a to 37 i. Therefore, even when a crack occurs in the film 31, the guard electrode 39 is likely to be disconnected earlier than the 1 st to 9 th electrodes 37a to 37 i. The controller IC40 can detect disconnection of the 10 th wiring 43 or the guard electrode 39 based on a change in the capacitance value of the guard electrode 39. As a result, the controller IC40 can detect that a crack is generated in the film 31, and the user can recognize that the touch sensor 30 is in an abnormal state.
In this way, by detecting the order of the capacitance value of the guard electrode 39, an abnormal state of the touch sensor 30 can be detected. In addition, by detecting an abnormal state based on a potential change in capacitance value of the guard electrode 39 of the entire electrode 37 and the guard electrode 39, erroneous detection due to noise can be reduced. That is, noise or the like caused by a strong electric field of a radio wave of a mobile phone or a microwave oven affects not only the guard electrode 39 but also the electrode 37. However, when the abnormal state is determined based on the relative order of the electrostatic capacitance values of the plurality of electrodes, the influence of noise can be reduced as compared with the case where the abnormal state is determined based on only the electrostatic capacitance value of the guard electrode 39. Further, by providing the guard electrode 39 which is not operated by the input unit 21, it is possible to form an abnormality detection electrode having a free shape regardless of the shape of the operation unit.
In addition, the user can recognize the abnormal state of the touch sensor 30 when a disconnection failure occurs in the guard electrode 39 and the 10 th wiring 43 disposed at the position closest to the outer peripheral edge of the film 31. The user who knows that the rice cooker is in an abnormal state can request repair to a repair center before the crack is developed to the inner side of the film 31 and the wiring 41 and the electrode 37 are disconnected to damage the operation function of the operation part. Since this stage is an initial stage in which the film 31 is cracked, the function of the input unit 21 is not impaired, and the user can cook using the rice cooker.
The present disclosure is not limited to the above-described embodiments, and includes embodiments modified as follows.
(1) In the above embodiment, the protective electrode 39 is disposed on the film 31, but the present disclosure is not limited thereto. The guard electrode 39 may not be provided. Instead of detecting an abnormality by a change in the electrostatic capacitance value of the guard electrode 39, the present disclosure may also detect an abnormality by a change in the electrostatic capacitance value of any one of the electrodes 37 opposed to the input portion 21. In this case, the wiring 41 of the electrode 37 facing the input section 21 which is not operated so much among the plurality of input sections 21 may be arranged closer to the outer peripheral edge of the film 31 than the other wiring 41. Further, the area of the electrode that detects the change in the electrostatic capacitance value may be larger than the area of the other electrode. In this case, the change in the capacitance value can be easily detected. By not disposing the guard electrode 39, the number of manufacturing steps and the cost can be reduced.
(2) In the above-described embodiment, the abnormal state of the touch sensor 30 is detected by the bit change of the electrostatic capacitance value, but the present disclosure is not limited thereto. The controller IC40 may detect an abnormal state by comparing the detected capacitance value with a predetermined threshold value instead of the bit change. For example, even when the 11 th wiring 44 is disconnected and the potential change of the capacitance value is not caused, the controller IC40 can detect the disconnection of the 11 th wiring 44 by comparing the detected capacitance value with a predetermined threshold value. Further, the controller IC40 may detect the abnormal state by using the potential change of the electrostatic capacitance of the electrode (for example, the guard electrode 39) as a reference and the comparison with the threshold value of the electrostatic capacitance of the electrode (for example, the guard electrode 39) as a reference.
(3) In the above embodiment, the controller IC40 detects the electrostatic capacitance value of the guard electrode 39 connected to the 10 th wiring 43 arranged in the vicinity of the left outer peripheral edge of the film wiring section 31b to detect the abnormal state, but is not limited thereto. For example, the controller IC40 may detect the abnormal state based on the capacitance value of the 7 th electrode 37g connected to the 7 th wiring 41g arranged in the vicinity of the right outer peripheral edge of the film wiring section 31 b. The controller IC40 may detect an abnormal state from the capacitance of either one of the guard electrode 39 and the 7 th electrode 37g, or may detect an abnormal state from both the capacitances.
(4) In the above embodiment, the controller IC40 may be connected to the wiring 41 and the 10 th wiring 43 through the low-pass filter FL. As shown in fig. 11, the low-pass filter FL is constituted by, for example, a capacitor C1 and a resistor R1. Capacitor C1 is, for example, 5pF and resistor R1 is, for example, 10k Ω. In fig. 11, the 1 st wiring 41a is shown connected to the low-pass filter FL, but other wirings 41 and 10 th wiring 43 may be similarly connected to the low-pass filter FL. By providing the low-pass filter FL, malfunction of the touch sensor 30 due to noise can be prevented. In addition, the capacitor C1 may be provided inside the controller IC 40.
(5) In the above embodiment, the 1 guard electrode 39 is arranged to surround the periphery of all the electrodes 37, but is not limited thereto. As shown in fig. 12, the 2 guard electrodes 39d and 39e divided into right and left may be arranged so as to surround the entire electrodes 37. The 10 th wiring 43a connected to the left guard electrode 39d is disposed on the left outer side of the wiring 41. The 11 th wire 44 connected to the right guard electrode 39e is disposed outside the right side of the wire 41. That is, the 10 th wiring 43a and the 11 th wiring 44 are arranged closer to the outer peripheral edge of the film 31 than the wiring 41. The 10 th wiring 43 and the 11 th wiring 44 are connected to the controller IC40, respectively. The abnormal state of the touch sensor 30 can be detected from the capacitance values of the guard electrodes 39d and 39e, respectively. That is, the abnormal state can be detected by at least one of the potential change of the capacitance value of the guard electrode 39d and the difference between the capacitance value of the guard electrode 39d and the reference value. In addition, the abnormal state can be detected by at least one of the potential change of the capacitance value of the guard electrode 39e and the difference between the capacitance value of the guard electrode 39e and the reference value. This can improve the accuracy of detecting an abnormal state.
(6) In the above embodiment, the 10 th wiring 43 connecting the guard electrode 39 and the controller IC40 is disposed on the outer peripheral edge P1 side, but is not limited thereto. As shown in fig. 13, the outer circumferential edge P2 may be disposed. The outer peripheral edge P2 has a smaller radius of curvature than the outer peripheral edge P1, and therefore the outer peripheral edge P2 is susceptible to cracking due to mechanical stress. Therefore, by disposing the 10 th wiring 43 at a portion where cracks are likely to occur, it is easy to detect an abnormal state of the touch sensor 30.
(7) In the above embodiment, the abnormal state of the touch sensor 30 is notified to the user by the error display of the display unit 14, but is not limited thereto. The user can also be notified of the abnormal state of the touch sensor 30 through sound guidance by a speaker. Further, it is also possible to use both the error display of the display unit 14 and the sound guidance from the speaker.
(8) In the above embodiment, the abnormal state is detected from the electrostatic capacitance value of the 10 th wiring line 43 (an example of the 3 rd wiring line of the present disclosure) disposed closest to the outer peripheral edge P1 (an example of the outer peripheral edge of the present disclosure) of the connection portion 31e of the film 31. That is, in the above-described embodiment, the abnormal state is detected based on the capacitance value of the wiring disposed at the outermost position. The present disclosure can detect an abnormal state not only from the capacitance value of the outermost wiring but also from the detection result of the capacitance value of the wiring disposed inside. The wiring disposed inside is preferably as far away from the outer peripheral edge as possible. For example, the wiring disposed inside is preferably a wiring (an example of the 1 st wiring in the present disclosure) that is at least inside of an adjacent wiring (an example of the 2 nd wiring in the present disclosure) of the outermost wiring (an example of the 3 rd wiring in the present disclosure). The inner 1 st wire is less likely to be subjected to mechanical stress and less likely to be disconnected than the outer 3 rd wire. In this case, the abnormal state can be detected when the potential difference of the capacitance value between the outer 3 rd wiring and the inner 1 st wiring changes from the reference potential difference. Alternatively, the abnormal state may be detected by comparing a difference between capacitance values of the outer 3 rd wiring and the inner 1 st wiring with a reference value. When the capacitance value is small, the abnormal state can be detected with higher accuracy when the abnormal state is detected from the change in the bit order difference of the capacitance value than when the abnormal state is detected from the difference of the capacitance values.
Industrial applicability
The rice cooker of the present disclosure is not limited to a pressure type rice cooker, but is also useful as a normal pressure type rice cooker, and is also useful as a rice cooker for home use and business use, for example.
Claims (11)
1. A rice cooker, comprising:
an outer cover, on the upper part of which an outer cover panel is arranged;
a capacitive and self-capacitive touch sensor includes a film on which a1 st electrode, a 2 nd electrode, and a 3 rd electrode positioned below an outer cover panel, a1 st wiring connected to the 1 st electrode, a 2 nd wiring connected to the 2 nd electrode, and a 3 rd wiring connected to the 3 rd electrode are arranged,
a sensor abnormality detection unit connected to each of the 1 st, 2 nd and 3 rd wirings and detecting an abnormal state of the touch sensor; and
a notification section that notifies an abnormal state of the touch sensor detected by the sensor abnormality detection section,
the 3 rd wiring is arranged closer to an outer peripheral edge of the film than the 1 st wiring and the 2 nd wiring,
the sensor abnormality detection section detects an abnormal state of the touch sensor based on an electrostatic capacitance value of the 3 rd electrode,
the sensor abnormality detection unit detects an abnormal state of the touch sensor when a potential of a capacitance value of the 3 rd electrode among the 1 st electrode, the 2 nd electrode, and the 3 rd electrode changes.
2. The rice cooker of claim 1,
a1 st input portion disposed to face the 1 st electrode and a 2 nd input portion disposed to face the 2 nd electrode are provided on an outer surface of the cover panel with the cover panel interposed therebetween,
the 3 rd electrode is an electrode having no input portion disposed to face each other.
3. The rice cooker of claim 2,
the 3 rd electrode is configured to surround the 1 st electrode and the 2 nd electrode.
4. The rice cooker of claim 1,
the outer surface of the cover panel has a1 st input portion disposed to face the 1 st electrode, a 2 nd input portion disposed to face the 2 nd electrode, and a 3 rd input portion disposed to face the 3 rd electrode with the cover panel interposed therebetween.
5. The rice cooker as claimed in any one of claims 1 to 4,
the area of the 3 rd electrode is larger than the area of the 1 st electrode and the area of the 2 nd electrode.
6. The rice cooker as claimed in any one of claims 1 to 4,
the film has: a film main body portion in which the 1 st electrode, the 2 nd electrode, and the 3 rd electrode are disposed; a film wiring section located between the film main body section and the sensor abnormality detection section, and in which a part of each of the 1 st, 2 nd, and 3 rd wirings is disposed; and a connecting portion connecting the film main body portion and the film wiring portion,
the outer periphery of the connecting portion has: a curved 1 st outer peripheral edge connected to one outer peripheral edge of the film wiring portion and an outer peripheral edge of the film main body portion; and a curved 2 nd outer peripheral edge connected to the other outer peripheral edge of the film wiring section and the outer peripheral edge of the film main body section,
the radius of curvature of said 2 nd outer peripheral edge is smaller than the radius of curvature of said 1 st outer peripheral edge,
the 3 rd wiring is arranged closer to the 2 nd outer peripheral edge than the 1 st wiring and the 2 nd wiring.
7. The rice cooker as claimed in any one of claims 1 to 4,
carbon films are disposed on the lower surfaces of the 1 st, 2 nd and 3 rd electrodes, respectively.
8. The rice cooker as claimed in any one of claims 1 to 4,
an LED is provided under the 1 st electrode,
the 1 st electrode has a hole through which light of the LED passes.
9. The rice cooker as claimed in any one of claims 1 to 4,
the film has a positioning portion for positioning with respect to the outer cover panel.
10. The rice cooker as claimed in any one of claims 1 to 4,
the outer cover panel is made of acrylic acid,
the film is affixed to the lower surface of the outer lid panel by an acrylic adhesive material.
11. The rice cooker as claimed in any one of claims 1 to 4,
the 2 nd wiring is arranged between the 1 st wiring and the 3 rd wiring,
the sensor abnormality detection unit detects an abnormal state based on a capacitance value of the 1 st electrode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-166868 | 2017-08-31 | ||
| JP2017166868A JP2019041968A (en) | 2017-08-31 | 2017-08-31 | rice cooker |
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| Publication Number | Publication Date |
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| CN109419320A CN109419320A (en) | 2019-03-05 |
| CN109419320B true CN109419320B (en) | 2021-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810933666.0A Active CN109419320B (en) | 2017-08-31 | 2018-08-16 | Rice cooker |
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| JP (1) | JP2019041968A (en) |
| CN (1) | CN109419320B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7290404B2 (en) * | 2017-10-12 | 2023-06-13 | ローム株式会社 | capacitive switch controller, capacitive switch, electronics |
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| CN109419320A (en) | 2019-03-05 |
| JP2019041968A (en) | 2019-03-22 |
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