JP2012142090A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent damages to rear face printing of a top plate caused by heat expansion and heat shrinkage of an underframe in heating adhesion.SOLUTION: A heating cooker further includes carbon printing parts 13 obtained by printing a coating material containing carbon on the surface of a heat resistant printing part 12 at locations contacting salients 7, and bonded to an underframe 6 by heat application to a thermosetting adhesive 9 provided in a clearance 10 with the underframe 6. Accordingly the carbon printing parts 13 contacting the salients 7 reduces friction between a rear face of a top plate 1 and the salients 7 caused by heat expansion and heat shrinkage of the underframe 6 in heating adhesion and protects the heat resistant printing part 12, thereby prevents removal between the heat resistant printing part 12 and a metallic-like printing part 11 or between the heat resistant printing part 12 and a base stuff of the rear face of the top plate 1, and damages to rear face printing.

Description

  The present invention relates to a heating cooker used in general households.

  In recent years, induction cooking appliances that are safe and clean heat sources that do not use fire are becoming popular as cooking appliances used in kitchens. With regard to the top plate used in this induction heating cooker, the bright color tone has become conspicuous, and metallic silver or gold has become common. The color when such a top plate is viewed from the front surface is generally designed by a combination of back surface printing.

  FIG. 5 is an enlarged partial cross-sectional view of a conventional cooking device. Hereinafter, a description will be given with reference to FIG.

  As shown in FIG. 5, heat resistant printing in which a silicone resin-based, polyamide resin-based, fluororesin-based, or composite heat-resistant resin paint is printed on the surface of a metallic tone-printing portion 21 containing an inorganic pigment such as a mica pigment. The portion 22 is formed, and the two printed portions are overlapped to obtain a metallic appearance. The metallic tone printing section is generally weak in printing strength, and the heat-resistant printing section 22 is also meant to protect it.

  The character display or the like is expressed by using the color of the heat-resistant printing unit 22 with the metallic tone printing unit 21 as a drawn character. In this case, the heat-resistant printing unit 22 is directly printed on the back fabric of the top plate 23.

  Further, the top plate 23 is supported by a plurality of convex portions 25 provided on the under frame 24 so that the back surface thereof is in direct contact with the top plate 23, and the top plate 23 is heated in a gap 26 between the top plate 23 and the under frame 24. The curable adhesive 27 is heated and bonded to the underframe 24 (see, for example, Patent Document 1).

JP 2009-216316 A

  However, in the conventional configuration, under the condition that the top plate 23 and the under frame 24 are heat-bonded using the adhesive 27, the metal under frame 24 thermally expands and contracts and contacts the back surface of the top plate 23. Relative movement occurs between the convex portion 25 of the underframe 24 and the back surface of the top plate 23, and the heat-resistant printing portion 22 of the top plate 23 adheres to the convex portion 25 of the underframe 24 to form the metallic tone printing portion 21 or the top plate. It was found that there is a risk of peeling from the backside fabric of 23.

  That is, when peeling occurs, the appearance color of the part changes from that of the periphery, and it looks as if it is scratched, resulting in an appearance defect.

  An object of the present invention is to solve the conventional problems described above, and an object thereof is to provide a heating cooker that prevents damage to the back surface printing of the top plate 23 due to thermal expansion / contraction of the underframe 24 during heat bonding.

  In order to solve the conventional problem, the cooking device of the present invention includes an outer casing, a top plate that covers an upper surface of the outer casing, and a convex portion that protrudes toward the top plate. An underframe for placing the top plate on the top plate, the top plate comprising a metallic tone printing unit containing an inorganic pigment printed on the back surface of the top plate, and a heat resistant resin on the surface of the metallic tone printing unit A heat-resistant printing part printed with a paint and / or a heat-resistant printing part printed with a heat-resistant resin paint on the back surface of the top plate, and a carbon-containing paint is printed on the surface of the heat-resistant printing part so as to contact the convex part A carbon printing part provided at a position, and a thermosetting adhesive provided in a gap between the under frame is heated and adhered to the under frame. It is obtained by the configuration.

  As a result, the convex portion comes into contact with the carbon printing portion containing carbon on the back surface of the top plate, and the frictional force between the back surface of the top plate and the convex portion caused by thermal expansion / contraction of the underframe during heat bonding is reduced, and the heat resistant printed portion Therefore, the heat-resistant printing part and the metallic-tone printing part or the heat-resistant printing part and the top plate back surface do not peel off, and the back surface printing can be prevented from being damaged.

  The cooking device of the present invention can prevent damage to the printing on the back surface of the top plate due to thermal expansion / contraction of the underframe during heat bonding.

The perspective view of the heating cooker in Embodiment 1 of this invention Sectional drawing of the heating cooker in Embodiment 1 of this invention The partial cross-section enlarged view of the heating cooker in Embodiment 1, 2, 3 of this invention The partial cross-section enlarged view of the heating cooker in Embodiment 1 of this invention. Partial sectional enlarged view of a conventional cooking device

  The first invention includes an outer casing, a top plate that covers an upper surface of the outer casing, an underframe on which a convex portion that protrudes toward the top plate is formed and the top plate is placed on the convex portion. The top plate comprises: a metallic tone printing portion containing an inorganic pigment printed on the back surface of the top plate; and a heat resistant printing portion in which a heat resistant resin paint is printed on the surface of the metallic tone printing portion and / or the top plate. A heat-resistant printing part printed with a heat-resistant resin paint on the back surface of the plate, and further having a carbon printing part provided at a position in contact with the convex part by printing a paint containing carbon on the surface of the heat-resistant printing part, By forming a configuration in which a thermosetting adhesive provided in a gap between the underframe is heated and bonded to the underframe, the convex portion is Since the frictional force between the back surface of the top plate and the convex portion generated by thermal expansion / contraction of the underframe is reduced during contact with the heat-bonded printing portion and heat-bonded, and the heat-resistant printing portion is protected. Separation of the metallic print portion or the heat-resistant printing portion and the top plate back surface do not occur, and damage to the back surface printing can be prevented.

In the second invention, in particular, the top plate of the first invention is replaced with a carbon printing portion provided at a position in contact with the convex portion by printing a paint containing carbon on the surface of the heat resistant printing portion, By providing a thermosetting adhesive between the convex part and the back surface of the top plate, the convex part comes into contact with the adhesive, and the top is generated by thermal expansion / contraction of the underframe during heat bonding. The frictional force between the back surface of the plate and the convex portion is reduced and the heat resistant printing portion is protected, so that the heat resistant printing portion and the metallic tone printing portion or the heat resistant printing portion and the top plate back surface do not peel off. In addition, it is possible to prevent damage to the back surface printing. In addition, since the carbon printing section is unnecessary, the number of plates is reduced, and the cost can be reduced.

  In the third aspect of the invention, in particular, the top plate of the first aspect of the invention is configured such that a thermosetting adhesive is provided between the convex portions and the friction force between the back surface of the top plate and the convex portions is further increased. In addition to the reduction, the heat-resistant printed part is further protected, so that the backside printing damage can be further prevented.

  In a fourth aspect of the invention, in particular, in any one of the first to third aspects of the present invention, a controller that controls the heating operation and a paint containing carbon are printed on the back surface of the top plate. An electrode unit for inputting a signal for controlling the heating operation, and the carbon printing unit is configured to print simultaneously with the electrode unit, so that electrode printing can be formed by the same printing, so the number of plates is not increased. Functions can be added at low cost.

  5th invention is the side which provided the linear convex part in the invention of any one of 1-4, especially, apply | coated the adhesive in the vicinity, and apply | coated the adhesive agent with respect to the said convex part By preventing the adhesive from protruding on the opposite side, the variation in the adhesive state such as the height and width of the adhesive when sandwiched between the top plate and the under frame is reduced, and the adhesive force is stabilized. be able to.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a perspective view of a heating cooker according to the first embodiment of the present invention, FIG. 2 is a sectional view of the heating cooker according to the first embodiment of the present invention, and FIG. 3 is a first embodiment of the present invention. FIG. 4 is a partial cross-sectional enlarged view of the heating cooker according to Embodiment 1 of the present invention.

  1 to 3, the top plate 1 is made of translucent heat-resistant low-expansion glass and covers the upper surface of the outer casing 2. A heating coil 3 positioned below the top plate 1 and a control unit 4 for supplying a high-frequency current to the heating coil 3 are provided, and the object to be heated 5 can be heated on the top plate 1.

  The top plate 1 is placed on a convex portion 7 formed on the under frame 6 so as to protrude to the top plate 1 side, and its outer peripheral portion is sandwiched between the top frame 8 and the under frame 6 so as to adhere thermosetting. It is fixed by heat bonding with the agent 9 and unitized.

  In this heat bonding, the adhesive 9 is cured by applying a predetermined temperature and pressure to the top plate 1, the top frame 8, and the under frame 6. It has the feature of great merit.

  The convex portion 7 has a role of placing the top plate 1, forming a gap 10 for applying the adhesive 9, reinforcing the underframe 6, and preventing the adhesive 9 from protruding. The convex part 7 is provided linearly, and the adhesive 9 is applied to the gap 10 in the vicinity thereof.

  The top plate 1 has a metallic print portion 11 containing an inorganic pigment printed on the back surface, a heat resistant print portion 12 in which a heat resistant resin paint is printed on the surface of the metallic print portion 11 and / or a heat resistant print on the back surface of the top plate 1. And a heat-resistant printing section 12 on which a resin paint is printed.

  As a specific example, heat-resistant printing in which a silicone-resin-based, polyamide-resin-based, fluororesin-based, or composite heat-resistant resin paint is printed on the surface of the metallic tone printing unit 11 containing an inorganic pigment such as a mica pigment. The portion 12 can be formed and the two printed portions can be overlapped to obtain a metallic appearance. The metallic tone printing unit 11 generally has a low printing strength, and the heat-resistant printing unit 12 is also protected in order to protect it.

  Here, the type, blending amount and color tone of the inorganic pigment, or the color tone of the heat-resistant printing unit 12 can be arbitrarily selected by the designer, and are determined in consideration of design and concealment.

Character display or the like is expressed using the color of the heat-resistant printing unit 12 with the metallic tone printing unit 11 as a cut character. In this case, the heat-resistant printing unit 12 is directly printed on the back fabric of the top plate 1. (See Figure 4)
Further, a carbon printing part 13 is provided on the surface of the heat-resistant printing part 12 so as to print a paint containing carbon and to be in contact with the convex part 7.

  Further, a coating material containing carbon is printed on the back surface of the top plate 1, and an electrode unit 14 for inputting a signal for controlling the heating operation to the control unit 4 is provided. This is printed at the same time as the electrode part 14.

  Electrical connection between the electrode unit 14 and the control unit 4 is performed by a contact terminal 15. Specifically, a predetermined operation can be performed by touching the glass touch type operation unit 16 on the upper surface of the top plate 1 corresponding to each electrode unit 14 with a finger.

  About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, by providing the carbon printing portion 13, the convex portion 7 comes into contact with the carbon printing portion 13, and the frictional force between the back surface of the top plate 1 and the convex portion 7 generated by thermal expansion / contraction of the underframe 6 during heat bonding is caused. Since the heat-resistant printing part 12 is protected as well as the heat-resistant printing part 12 and the metallic tone printing part 11 or the heat-resistant printing part 12 and the top plate 1 are not peeled off, the back-side printing is prevented from being damaged. Can do.

  In the present embodiment, the controller 4 that controls the heating operation is formed by printing a paint containing carbon on the back surface of the top plate 1, and a signal for controlling the heating operation is input to the controller 4. Since the electrode portion 14 is printed by the same printing as that of the carbon printing portion 13, the function can be added at a low cost without increasing the number of plates.

  Moreover, in this Embodiment, since the convex part 7 is provided in linear form and the adhesive agent 9 is apply | coated to the clearance gap 10 in the vicinity, it is on the opposite side to the side which apply | coated the adhesive agent 9 with respect to the convex part 7. The adhesive 9 does not protrude, and variations in the adhesive state such as the height and width of the adhesive 9 when sandwiched between the top plate 1 and the underframe 6 are reduced, and the adhesive force can be stabilized.

  If at least one linear convex portion 7 is provided on one side of the adhesive 9, this effect is obtained. In this case, the adhesive 9 has an underframe 6 and a top plate 1 on the opposite side of the convex portion 7. A plane that is wide enough to sandwich the gap is necessary. If this is insufficient, the adhesive 9 hangs down to the lower side of the under frame 6 and stable bonding cannot be performed.

  Of course, if the linear protrusions 7 are provided in the vicinity of both sides of the adhesive 9, it is possible to further reduce variations in the adhesive state such as the height and width of the adhesive 9 and to stabilize the adhesive force. Needless to say.

(Embodiment 2)
FIG. 3 shows an induction heating cooker according to the second embodiment of the present invention.

  Instead of having a carbon printing part 13 provided at a position in contact with the convex part 7 by printing a coating material containing carbon on the surface of the heat-resistant printing part 12, a thermosetting property is provided between the convex part 7 and the back surface of the top plate 1. The adhesive 9 is provided.

  About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  Since the convex portion 7 comes into contact with the adhesive 9 and the frictional force between the back surface of the top plate 1 and the convex portion 7 generated by thermal expansion / contraction of the underframe 6 during heat bonding is reduced, the heat resistant printing portion 12 is protected. The backside fabric of the heat resistant printing unit 12 and the metallic tone printing unit 11 or the heat resistant printing unit 12 and the top plate 1 does not peel off, and damage to the backside printing can be prevented. In addition, since the carbon printing unit 13 is not required, the number of plates is reduced and the cost can be reduced.

(Embodiment 3)
FIG. 3 shows an induction heating cooker according to Embodiment 3 of the present invention.

  In the present embodiment, in addition to the contents of the first embodiment, a thermosetting adhesive 9 is provided between the convex portion 7 and the back surface of the top plate 1.

  About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  By providing the carbon printing part 13 and providing the thermosetting adhesive 9 between the convex part 7 and the back surface of the top plate 1, the convex part 7 comes into contact with the carbon printing part 13 through the adhesive 9. In addition, the frictional force between the back surface of the top plate 1 and the convex portion 7 caused by thermal expansion / contraction of the underframe 6 during heat bonding is further reduced and the heat resistant printing portion 12 is protected. Separation of the back side fabric of the part 11 or the heat-resistant printing part 12 and the top plate 1 does not occur, and damage to the back side printing can be further prevented.

  As described above, the heating cooker according to the present invention can prevent damage to the printing on the back surface of the top plate due to thermal expansion / contraction of the underframe during heat bonding. It is effective for use.

1, 23 Top plate 2 Outer housing 4 Control unit 6, 24 Under frame 7, 25 Protrusion 9, 27 Adhesive 10, 26 Gap 11, 21 Metallic printing unit 12, 22 Heat-resistant printing unit 13 Carbon printing unit 14 Electrode Part

Claims (5)

An outer casing; a top plate that covers an upper surface of the outer casing; and an underframe that has a convex portion that protrudes toward the top plate and that mounts the top plate on the convex portion. Is a metallic-tone printed part containing an inorganic pigment printed on the back surface of the top plate, and a heat-resistant printing part in which a heat-resistant resin paint is printed on the surface of the metallic-tone printed part, and / or a heat resistant resin on the back surface of the top plate. A heat-resistant printing part printed with paint, and further comprising a carbon printing part provided at a position in contact with the convex part by printing a paint containing carbon on the surface of the heat-resistant printing part, and between the underframe A heating cooker in which a thermosetting adhesive provided in the gap is heated and bonded to the under frame. The top plate has a carbon printing part provided at a position in contact with the convex part by printing a paint containing carbon on the surface of the heat resistant printing part, and a thermosetting adhesive is provided between the convex part. The cooking device according to claim 1 provided. The cooking device according to claim 1, wherein a thermosetting adhesive is provided between the top plate and the convex portion. A carbon printing unit comprising: a control unit that controls the heating operation; and an electrode unit that is formed by printing a coating material containing carbon on the back surface of the top plate and that inputs a signal for controlling the heating operation to the control unit. Is a heating cooker according to any one of claims 1 to 3, which is printed simultaneously with the electrode part. The linear convex part was provided, the adhesive agent was apply | coated in the vicinity, and the said adhesive agent did not protrude on the opposite side to the side which apply | coated the said adhesive agent with respect to the said convex part. The heating cooker of any one of Claims.