JP3019723U - Door shield structure for microwave oven - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a microwave oven door shield structure capable of preventing radio wave leakage from the door portion. [Structure] For a microwave oven in which a main sealer metal fitting 3 is provided in the center of the inside of the door, a sub sealer metal fitting 2 is provided on the outer peripheral portion of the main sealer metal fitting 3, and seams are provided at the upper and lower ends of the sub sealer metal fitting 2 on the door hinge side. At the door
The electrically conductive shield label 5 covers the seam portions existing on the upper and lower ends of the sub-sealer fitting 2 on the door hinge side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a microwave oven door shield structure.

[0002]

[Prior art]

 FIG. 5 is a cross-sectional perspective view of a main part of a conventional door choke structure for a microwave oven. As shown in the figure, the main body of the microwave oven door is provided with a main sealer fitting 30 in the center of the inside and extends outward in contact with the lower surface of the main sealer fitting 30 so that the outermost end 40A rises. In order to suppress the radio wave leakage from the outer end portion 30A of the main sealer metal fitting 30 by providing the metal fitting 40, between the end portion 30A of the main sealer metal fitting 30 and the main body metal fitting 40, the outer end portion 30A and the main metal fitting 40 are provided. The radio wave absorber 12 is fitted in contact with both of them to form a choke structure that attenuates radio waves leaked from the gap between the doors when the door is closed.

[0003]

[Problems to be solved by the device]

 By the way, in the above-mentioned configuration, the radio wave absorber 12 is made of a so-called special resin such as a ferrite kneading resin. Such special resins are expensive and are becoming difficult to obtain year after year, so they were not appropriate in terms of both cost reduction and stable supply.

The present invention has been made to solve the above drawbacks of the prior art, and the purpose thereof is to prevent electric wave leakage from a door portion with a simple structure and to provide an inexpensive microwave oven. To provide a shield structure.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, in the microwave oven door shield structure according to the present invention, a main sealer metal fitting is provided in the center of the inside of the door, and a sub sealer metal fitting is provided on an outer peripheral portion of the main sealer metal fitting. In the microwave oven door having a structure in which the upper and lower ends of the door hinge side are connected, conductive members are arranged at the seam portions of the sub-sealer metal fittings on the upper and lower ends of the door hinge side. .

Further, the conductive member is a flexible member formed by vapor deposition of aluminum foil. Further, the above-mentioned flexible member is a label having an adhesive on one surface.

[0007]

[Action]

 According to the door shield structure for a microwave oven of the present invention, since the conductive shield label is disposed on the connecting portion of the upper and lower ends of the door seal side of the sub-sealer metal fitting, the joint portion of the upper and lower ends of the door hinge side is provided. Even if there is a gap, the shield label will electromagnetically connect the sub sealer fittings. Therefore, the electric wave leaking to the sub-sealer metal side of the door is choked by the shield label without leaking, and the electric wave does not leak to the outside.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an exploded perspective view of an embodiment of a microwave oven door shield structure according to the present invention. FIG. 2 is a plan view of the microwave oven door shield structure shown in FIG. 1. 3 is an enlarged view of a main part of FIG. 2, and FIG. 4 is a side view of FIG.

As shown in FIG. 1, a microwave oven door shield structure 1 according to the present invention includes a main sealer metal fitting 3 in the center of the inside of the microwave oven door, and a resin door back cover on the four outer peripheral surfaces thereof. 4 are provided in series, and further sub-sealer metal fittings 2 are provided in series on the four outer peripheral surfaces of the door back cover 4. The main sealer metal fitting 3 is arranged inside the door (upward in FIG. 1) so as to slightly project from the sub sealer metal fitting 2, and when the door is closed, the main sealer metal fitting 3 makes surface contact with the front of the cooking cabinet. The structure is designed to prevent radio waves from leaking from the cooking cabinet.

Further, the sub-sealer metal fitting 2 arranged on the outermost periphery has one side surface portion forming the hinge portion of the door and the other three side surface portions in a U-shape, which are separate bodies. The structure is such that they are attached in contact with each other. As a result of this structure, at the two joints of the one side portion forming the hinge portion of the door and the U-shaped three side portion, the gap 6A as shown in FIG. , 6B may be formed.

In the present invention, two shield labels 5 are attached on the two joints so as to electromagnetically connect the spaces 6A and 6B. For the shield label 5, a substantially rectangular tape, for example, a flexible adhesive tape formed by vapor deposition of aluminum is used. If a conductive adhesive is used as the adhesive on the back surface of the shield label 5, the shielding effect will be further enhanced. Further, the protruding portion 5A of the shield label 5 from the sub sealer metal fitting 2 to the outside is bent and affixed to the side surface of the sub sealer metal fitting 2, and the protruding portion 5B to the inner side is attached before the door back cover 4 is assembled. , It is folded inside the sub sealer bracket 2. As a result of this structure, the voids 6A, 6B are covered by the shield labels 5, 5.

Therefore, the microwave oven door having the shield structure 1 attached to the microwave oven main body is provided with a radio wave from the inside of the cooking cabinet which leaks between the microwave oven main body and the main sealer fitting 3 during cooking of the microwave oven. However, the sub-sealer metal fitting 2 does not leak further to the outside through the gaps 6A and 6B, the choke structure is completely formed, and radio waves do not leak to the outside between the microwave oven main body and the door. .

[0013]

As described above, the door shield structure for a microwave oven according to the present invention has a structure in which the gaps existing at the upper and lower ends of the sub-sealer fitting on the door hinge side are covered with the conductive shield label. Therefore, even if there is a product with a slight gap at the seam of the sub-sealer metal due to variation during assembly, the shield label completely chokes the radio wave, thus completely preventing the radio wave from leaking to the outside.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of a microwave oven door shield structure according to the present invention.

2 is a plan view of the microwave oven door shield structure shown in FIG. 1. FIG.

FIG. 3 is an enlarged view of a main part of FIG. 2;

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a perspective view showing a main part of a conventional door choke structure for a microwave oven.

[Explanation of symbols]

 1 Microwave oven door shield structure 2 Sub sealer bracket 3 Main sealer bracket 4 Door back cover 5 Shield label 6A, 6B Void

Claims (3)

[Scope of utility model registration request] 1. A microwave oven having a structure in which a main sealer fitting is provided in the center of the inside of the door, a sub-sealer fitting is provided on an outer peripheral portion of the main sealer fitting, and seams are present at upper and lower ends of a door hinge side of the sub-sealer fitting. A door shield structure for a microwave oven, characterized in that a conductive member is arranged at a joint portion existing at upper and lower ends of a door hinge side of the sub-sealer fitting in the door. 2. The door shield structure for a microwave oven according to claim 1, wherein the conductive member is a flexible member formed by depositing aluminum foil. 3. The door shield structure for a microwave oven according to claim 2, wherein the flexible member is a label having an adhesive on one surface.