JP2005090840A - Cooking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooking device carrying out cost reduction, and capable of improving working efficiency of assembly. <P>SOLUTION: An operating part 4 arranged in a front face of a chassis 2 forming a body part has an operation panel 5 for carrying out cooking operation, and a metal decorative panel 6 covering a front face of the operation panel 5, and a coil spring 7 inserted through a through hole 5b formed on the operation panel 5 is contractedly provided by abutting both ends on the chassis 2 and the decorative panel 6. By this, continuity is provided between the chassis 2 and the decorative panel 6, and the decorative panel 6 is grounded. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cooking device that performs cooking, and more particularly, to a cooking device that has an operation panel on the front for performing cooking operations.

  FIG. 6 is a perspective view showing a conventional cooking device. The heating cooker 1 includes a heating chamber 8 that is formed by a metal chassis 2 and has a main body portion that is opened and closed by an opening / closing door 3. In the main body, a magnetron, a heater, and the like for cooking the object to be heated put into the heating chamber 8 are provided. An operation unit 4 is disposed on the side of the heating chamber 8. The operation unit 4 is configured by covering the front side of an operation panel 5 for performing a cooking operation with a decorative panel 6 for improving aesthetics.

  The operation panel 5 includes a display unit 5a and a plurality of operation switches 5g. The operation panel 5 is equipped with an IC for controlling the display unit 5a and the operation switch 5g. The decorative panel 6 is made of metal, and has openings 6a and 6d that expose the display 5a and the operation switch 5g. A terminal portion 6c extends rearward at the lower portion of the decorative panel 6.

  FIG. 7 is a top sectional view of the operation unit 4. The decorative panel 6 is formed with an engaging claw 6b at the side end, and is engaged with an engaging hole 5c formed in the operation panel 5. The terminal portion 6 c of the decorative panel 6 is inserted into an insertion hole 5 f formed in the operation panel 5 and is attached to the chassis 2 with screws 10.

As a result, the metal decorative panel 6 is grounded, and the failure and destruction of the IC due to static electricity charged on the decorative panel 6 can be prevented. In addition, the heating cooker 1 is subjected to a lightning strike test to ensure safety, and can prevent failure and destruction of the IC due to the lightning strike test.
JP-A-8-203666 (2nd page-3rd page, Fig. 2)

  However, according to the conventional heating cooker 1, since the terminal portion 6 c is formed on the decorative panel 6, the expensive decorative panel 6 becomes large and the cost of the heating cooker 1 increases. Further, since the terminal portion 6c is inserted into the insertion hole 5f and screwed, there is a problem that the workability of the assembly is deteriorated.

  An object of this invention is to provide the heating cooker which can improve workability | operativity of an assembly while aiming at cost reduction.

  To achieve the above object, the present invention includes a chassis that forms a main body, an operation panel that is disposed on the front surface of the chassis and performs a cooking operation, and a conductive decorative panel that covers the front surface of the operation panel. In the heating cooker provided, a through-hole is formed in the operation panel, and a coil spring is provided which is inserted through the through-hole and electrically connects the chassis and the decorative panel.

  When the diameter-enlarged portion is provided on the front side of the coil spring, and the counterbore portion is provided in the through hole, the enlarged-diameter portion is installed in the spotlight portion. Accordingly, the coil spring is held by surrounding the enlarged diameter portion by the decorative panel and the spot facing portion. When a conductive cap that covers the front side of the coil spring is provided, the cap comes into contact with the decorative panel and is conducted. The operation panel may be provided with a plate-like member to which an operation switch or the like is attached on the front surface, and a through hole is formed in a boss protruding on the back side of the plate-like member so that a coil spring can be inserted.

  According to the present invention, since the coil spring is inserted into the through hole formed in the operation panel and the chassis and the decorative panel are conducted, the decorative panel can be easily grounded. Therefore, it is possible to reduce the size of the expensive decorative panel and reduce the cost of the cooking device, and it is possible to improve the workability of the assembly without requiring the screwing operation of the decorative panel.

  According to the present invention, since the coil spring is provided with the enlarged diameter portion and the through hole is provided with the counterbore portion, the coil spring is prevented from falling off and is held integrally with the decorative panel and the operation panel. Therefore, the workability of assembly can be further improved.

  Further, according to the present invention, since the conductive cap that covers the front side of the coil spring is provided, the cap that contacts the coil spring is brought into surface contact with the decorative panel, reducing the poor conduction between the decorative panel and the chassis. Can be securely grounded.

  According to the present invention, since the boss protruding on the back side of the plate-like member disposed on the front surface of the operation panel is provided and the coil spring is inserted into the cylindrical through hole formed in the boss, the positioning accuracy of the coil spring is improved. improves. Therefore, the decorative panel can be securely grounded by arranging the coil spring at a predetermined position of the chassis.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a heating cooker according to the first embodiment. For convenience of explanation, the same parts as those in the conventional example shown in FIGS. The heating cooker 1 includes a heating chamber 8 that is formed by a metal chassis 2 and has a main body portion that is opened and closed by an opening / closing door 3. In the main body, a magnetron, a heater, and the like for cooking the object to be heated put into the heating chamber 8 are provided. An operation unit 4 is disposed on the side of the heating chamber 8. The operation unit 4 is configured by covering the front side of an operation panel 5 for performing a cooking operation with a decorative panel 6 for improving aesthetics.

  The operation panel 5 includes a display unit 5a and a plurality of operation switches 5g. The operation panel 5 is equipped with an IC for controlling the display unit 5a and the operation switch 5g. In addition, a through hole 5 b through which the conductive coil spring 7 is inserted is formed in the lower part of the operation panel 5. The decorative panel 6 is made of a metal such as stainless steel or aluminum, and has openings 6a and 6d that expose the display 5a and the operation switch 5g.

  FIG. 2 is a top sectional view of the operation unit 4. The decorative panel 6 is formed with an engaging claw 6b at the side end, and is engaged with an engaging hole 5c formed in the operation panel 5. The coil spring 7 inserted through the through-hole 5b is contracted so that the front side comes into contact with the decorative panel 6 and the back side comes into contact with the chassis 2.

  As a result, the metallic decorative panel 6 is grounded, and the failure and destruction of the IC due to static electricity charged on the decorative panel 6 can be prevented. In addition, the heating cooker 1 is subjected to a lightning strike test to ensure safety, and can prevent failure and destruction of the IC due to the lightning strike test.

  According to this embodiment, it is not necessary to provide the terminal portion 6c (see FIG. 6) as in the conventional example on the decorative panel 6, and the expensive decorative panel 6 can be downsized to reduce the cost of the heating cooker. Further, since the decorative panel 6 can be easily grounded by the coil spring 7, the assembling workability can be improved.

  Next, FIG. 3 is a top sectional view showing an operation unit of the heating cooker according to the second embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. In this embodiment, an enlarged diameter portion 7a having an enlarged diameter on the front side of the coil spring 7 is provided, and a spot facing portion 5d is formed in the through hole 5b. Other parts are the same as those of the first embodiment.

  The enlarged diameter portion 7 a of the coil spring 7 inserted through the through hole 5 b is disposed in the spot facing portion 5 d and is surrounded by the spot facing portion 5 d and the decorative panel 6. Thereby, the fall of the coil spring 7 can be prevented, and the decorative panel 6, the operation panel 5, and the coil spring 7 can be handled as an integrated operation part assembly. Therefore, the workability of assembly can be further improved.

  Next, FIG. 4 is a top sectional view showing an operation unit of the heating cooker according to the third embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. In the present embodiment, a metal cap 9 for fitting the front side of the coil spring 7 is provided. Other parts are the same as those of the first embodiment.

  The front surface and the peripheral surface of the coil spring 7 are in contact with the inner surface of the cap 9, and the flat surface on the front surface side of the cap 9 is in contact with the decorative panel 6. For this reason, the contact area between the decorative panel 6 and the cap 9 and the contact area between the cap 9 and the coil spring 7 are larger than the contact area between the decorative panel 9 and the coil spring 7 of the first embodiment. Therefore, the conduction failure between the decorative panel 6 and the chassis 2 can be reduced and the decorative panel 6 can be reliably grounded. The cap 9 may be made of a conductor such as a conductive resin other than metal.

  Next, FIG. 5 is a top sectional view showing an operation unit of the cooking device according to the fourth embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. In the present embodiment, the operation panel 5 is provided with a plate-like member 5h made of a thin resin-molded product on the front surface. The through hole 5b is formed in a boss 5e protruding from the back surface side of the plate-like member 5h. Other parts are the same as those of the first embodiment.

  A display unit 5a and an operation switch 5g (see FIG. 1) are attached to the plate-like member 5h. The through hole 5 b is formed in a cylindrical shape that is long in the axial direction by the boss 5 e, and guides the coil spring 7 to a position approaching the chassis 2. Thereby, the positioning accuracy of the coil spring 7 is improved, and the coil spring 7 can be brought into contact with a predetermined position of the chassis 2. Therefore, the decorative panel 6 can be reliably grounded.

  In the first to fourth embodiments, the same effect can be obtained by the same configuration even when the decorative panel 6 and the coil spring 7 are made of a conductor such as a conductive resin other than metal.

These are perspective views which show the heating cooker of 1st Embodiment of this invention. These are upper surface sectional drawings which show the operation part of the heating cooker of 1st Embodiment of this invention. These are upper surface sectional drawings which show the operation part of the heating cooker of 2nd Embodiment of this invention. These are upper surface sectional drawings which show the operation part of the heating cooker of 3rd Embodiment of this invention. These are upper surface sectional drawings which show the operation part of the heating cooker of 4th Embodiment of this invention. These are perspective views which show the conventional heating cooker. These are upper surface sectional drawings which show the operation part of the conventional cooking-by-heating machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heating cooker 2 Chassis 3 Opening / closing door 4 Operation part 5 Operation panel 5b Through-hole 5d Spot facing part 5e Boss 5h Plate-shaped member 6 Decoration panel 6c Terminal part 7 Coil spring 7a Expanding part 9 Cap 10 Screw

Claims (4)

  In a heating cooker comprising a chassis forming a main body, an operation panel arranged on the front of the chassis and performing a cooking operation, and a conductive decorative panel covering the front of the operation panel, the operation panel A heating cooker characterized in that a through hole is formed and a coil spring that is inserted through the through hole and electrically connects the chassis and the decorative panel is provided.   The cooking device according to claim 1, wherein the coil spring has an enlarged diameter portion on the front surface side, and a counterbore portion for arranging the enlarged diameter portion is provided in the through hole.   The cooking device according to claim 1 or 2, further comprising a conductive cap that is fitted on a front side of the coil spring and has a flat surface that contacts the decorative panel.   The said operation panel has the plate-shaped member arrange | positioned at the front surface, The said through-hole was formed in the boss | hub which protrudes in the back surface side of the said plate-shaped member, The Claim 1 characterized by the above-mentioned. The cooking device described.

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