Cooking stove

• US 7,217,900 B2
• Filed: 04/21/2005
• Issued: 05/15/2007
• Est. Priority Date: 04/23/2004
• Status: Expired due to Fees

• Current Assignee: Rinnai Corporation
• Original Assignee: Rinnai Corporation
• Inventors: Gama, Atsuhito, Mizutani, Yoshihiro
• Primary Examiner(s): Friedhofer; Michael A.
• Application Number:
  US11/110,755
• Publication Number:
  US 20050235982A1
• Time in Patent Office: 754 Days
• Field of Search: 200/5.A, 200/600, 200/511, 200/512, 200/296, 219/489, 219/490, 219/702, 219/715, 219/494, 219/464, 219/518, 219/453, 219/468, 219/448, 341/22, 341/33, 341/34, 341/176, 345/156, 345/168, 345/173, 345/176, 400/472
• US Class Current: 200/600
• CPC Class Codes: F24C 3/12 Arrangement or mounting of control or safety devices
• CPC Class Codes: H03K 17/962 Capacitive touch switches

Abstract

A cooking stove in which an operation circuit board formed with an electrode pattern is placed on a back surface of a glass top plate so as to suppress the formation of an air layer. The cooking stove includes a display mark and a switch mark provided on a front surface of the glass top plate so as to have a first positional relationship, a case having a display opening corresponding to the display mark with the first positional relationship and an operation circuit board opening corresponding to the switch mark, the case being bonded to the uneven back surface of the glass top plate so that the display opening is positioned at the display mark, and a bonding layer that bonds the back surface of the glass top plate to a part of the operation circuit board in which an electrode pattern is formed, via the operation circuit board opening in the case so that depressed portions of the back surface of the glass top plate are filled with a double coated tape having a foam as a base material.

Claims

1. A cooking stove comprising:

a glass top plate covering a top surface of a cooking stove main body accommodating heating means;

an operation circuit board having an electrode pattern formed to detect an electrostatic object and mounted on a back surface of the glass top plate;

electrical capacitance detecting means for detecting an electrostatic object located on the part of a front surface of the glass top plate which is opposite to the electrode pattern, the electrical capacitance detecting means being constructed using the electrode pattern;

a nonconductive bonding layer bonding the back surface of the glass top plate tightly to a part of the operation circuit board on which the electrode pattern is formed;

a display mark provided on the part of the front surface of the glass top plate through which light is transmitted;

a switch mark provided on the front surface of the glass top plate and having a first positional relationship with the display mark; and

a case having a display opening and an operation circuit board opening respectively corresponding to the display mark and the switch mark with the first positional relationship, the case being mounted on the back surface of the glass top plate so that the display opening is positioned at the display mark,

wherein the part of the operation circuit board on which the electrode pattern is formed is bonded by the bonding layer to the back surface of the glass top plate via the operation circuit board opening.

2. The cooking stove according to claim 1, wherein the back surface of the glass top plate is uneven, and

the bonding layer bonds the part of the operation circuit board on which the electrode pattern is formed to the uneven back surface of the glass top plate so that depressed portions of the back surface of the glass top plate are filled.

3. The cooking stove according to claim 2, wherein the bonding layer is a double coated tape formed using a foam as a base material and which is bonded, under pressure, between the back surface of the glass top plate and the part of the operation circuit board on which the electrode pattern is formed.

4. The cooking stove according to claim 1, wherein the bonding layer is a double coated tape formed using a foam as a base material and which is bonded, under pressure, between the back surface of the glass top plate and the part of the operation circuit board on which the electrode pattern is formed.

5. The cooking stove according to claim 1, wherein the case has a first guide portion having a second positional relationship with the display opening, and

the cooking stove further comprises a display circuit board having lighting means and a second guide portion with the second positional relationship with the lighting means, the display circuit board being mounted in the case so that the second guide portion is positioned at the first guide portion.

6. The cooking stove according to claim 1, wherein the case has a depressed portion below a surface portion of the case;

and

the cooking stove further comprises a display circuit board having lighting means protruding from an end surface thereof, the lighting means being fitted into the depressed portion and the case being in contact with the end surface of the display circuit board.

7. A cooking stove comprising:

a glass top plate covering a top surface of a cooking stove main body accommodating heating means;

an operation circuit board having an electrode pattern formed to detect an electrostatic object and mounted on a back surface of the glass top plate;

a display circuit board having lighting means protruding from an end surface thereof, the display circuit board being located beneath the glass top plate;

electrical capacitance detecting means for detecting an electrostatic object located on the part of a front surface of the glass top plate which is opposite to the electrode pattern, the electrical capacitance detecting means being constructed using the electrode pattern;

a nonconductive bonding layer bonding the back surface of the glass top plate tightly to a part of the operation circuit board on which the electrode pattern is formed; and

a case having an operation circuit board opening and a depressed portion below a surface portion of the case, the case being mounted on the back surface of the glass top plate,

wherein the lighting means of the display circuit board being fitted into the depressed portion and the case being in contact with the end surface of the display circuit board.