Electronic transformer insulation installation structure and microwave oven thereof

Abstract

The utility model relates to the technical field of transformer installation, in particular to an electronic transformer insulation installation structure and a microwave oven thereof, the electronic transformer insulation installation structure comprises an installation plate, the installation plate is used for welding an electronic transformer, and a connecting wire of the electronic transformer extends out from the bottom of the installation plate. An electromagnetic shielding cover is arranged at the position, corresponding to the electronic transformer, of the mounting plate in a covering mode, the electromagnetic shielding cover is fixedly arranged on the mounting plate through a pressing belt, and the edges of the two opposite sides of the mounting plate protrude out of the outer side of the electromagnetic shielding cover. A mounting plate is arranged on the bottom plate of the microwave oven, sliding rails matched with the edges of the two opposite sides of the mounting plate are arranged on the bottom plate of the microwave oven, corresponding fixing holes are formed in the sliding rails and the mounting plate, and screws are inserted into the fixing holes in a penetrating manner and are used for fixing the mounting plate on the bottom plate of the microwave oven. According to the utility model, the electronic transformer can be conveniently fixed in the microwave oven, and insulation and electromagnetic shielding effects are provided for the transformer.

Description

An insulating mounting structure for an electronic transformer and its microwave oven Technical Field

[0001] This utility model relates to the technical field of transformer installation, specifically to an electronic transformer insulation installation structure and its microwave oven. Background Technology

[0002] A microwave oven is a modern cooking appliance that uses microwave energy to heat food. It mainly consists of a power supply, a magnetron, a control circuit, and a cooking cavity. The working principle of a microwave oven is that it generates radiant electrons that form an ordered spatial electron flow. A magnetic field passes through this electron flow to control it. Under the control of the magnetic field and a given geometric environment, the electron flow alternates. This alternating electron flow is then guided through a waveguide into the food processing area. The alternating electron flow excites water molecules in the food, causing them to move alternately and generate heat. The water then transfers the heat to the food, cooking it. Although microwaves are a form of radiation, the actual leakage power poses very little harm to the human body. To further prevent microwave leakage and avoid environmental safety hazards, microwave oven casings are generally made of metal plates, which provide excellent shielding against electromagnetic waves. However, this can easily create a conductive path between the transformer and other components, leading to safety issues such as electrical leakage. Furthermore, the secondary coil in the transformer can generate AC voltages up to 4000V, producing both electric and magnetic field radiation. Therefore, given the limited shielding effect of insulated transformers and microwave oven casings, safety hazards such as transformer leakage and magnetic field radiation are important reasons why microwave ovens pose safety risks. Summary of the Invention

[0003] To address the problems existing in the prior art, one objective of this utility model is to provide an insulating mounting structure for an electronic transformer. This utility model facilitates the fixing of the electronic transformer in a microwave oven and provides insulation and electromagnetic shielding for the transformer, effectively suppressing the leakage of the transformer's magnetic field waves and preventing electromagnetic radiation from affecting other components or the external environment. A second objective of this utility model is to provide a microwave oven that further meets safety standards regarding accidental electric shock and electromagnetic radiation.

[0004] The present invention discloses an insulating mounting structure for an electronic transformer, comprising a mounting plate for welding the electronic transformer, wherein the connecting wires of the electronic transformer extend from the bottom of the mounting plate, an electromagnetic shielding cover is provided on the mounting plate corresponding to the position of the electronic transformer, the electromagnetic shielding cover is fixed to the mounting plate by a pressure band, the opposite side edges of the mounting plate protrude from the outer side of the electromagnetic shielding cover, and the bottom plate of the microwave oven is provided with slide rails adapted to the opposite side edges of the mounting plate, both the slide rails and the mounting plate having corresponding fixing holes, and screws are inserted into the fixing holes to fix the mounting plate to the bottom plate of the microwave oven.

[0005] In one embodiment, the slide rail has an inverted L-shaped cross-section, and the bottom of the mounting plate is provided with an elastic pad, which makes the mounting plate fit tightly against the top inner side of the slide rail.

[0006] In one embodiment, the elastic gasket has a hole in the middle, and the bottom plate of the microwave oven forms a groove between the two slide rails, thereby leaving space between the bottom plate of the microwave oven and the mounting plate.

[0007] In one embodiment, the fixing holes are respectively located at the ends of the slide rail, the four corners of the mounting plate, the four corners of the elastic pad, and the corresponding positions on the bottom plate of the microwave oven.

[0008] In one embodiment, the pressure band spans across the electromagnetic shield, and mounting holes are provided at both ends of the pressure band and at corresponding positions on the mounting plate, with screws inserted into the mounting holes.

[0009] In one embodiment, the number of pressure bands is at least two, and the pressure bands are arranged in a crisscross pattern on the electromagnetic shield.

[0010] In one embodiment, a space is left between the electromagnetic shield and the microwave oven, and a pressure plate is provided on the side of the microwave oven corresponding to the electromagnetic shield. An insulating pad is provided at the bottom of the pressure plate and is in close contact with the upper surface of the electromagnetic shield.

[0011] In one embodiment, the microwave oven has a downward hook-shaped mounting portion on its side, the pressure plate is inverted L-shaped, and the pressure plate has a locking hole that matches the mounting portion.

[0012] In one embodiment, the slide rail, the elastic pad, and the pressure plate are all made of insulating material.

[0013] The microwave oven described in this utility model includes the above-described electronic transformer insulation mounting structure.

[0014] Compared with the prior art, the beneficial effects of this utility model's technical solution are:

[0015] This invention completely encloses the electronic transformer with a mounting plate and an electromagnetic shielding cover, providing further shielding against electric and magnetic field radiation. The assembly is mainly connected and fixed to the slide rail by the mounting plate, which facilitates installation and positioning while reducing contact between other parts and the microwave oven. Using only the slide rail for fixation makes it easier to install with insulation from the microwave oven body.

[0016] The microwave oven of this invention uses the above-mentioned installation structure to fix the electronic transformer, which facilitates the installation and replacement of the electronic transformer and reduces the risk of electric shock and electromagnetic radiation when people use the microwave oven. Attached Figure Description

[0017] Figure 1 is an overall schematic diagram of the electronic transformer of this utility model installed in a microwave oven;

[0018] Figure 2 is a front view of this utility model;

[0019] Figure 3 is an exploded view of the electronic transformer part of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1-Mounting plate, 2-Electronic transformer, 3-Electromagnetic shield, 4-Pressure band, 5-Slide rail, 6-Fixing hole, 7-Elastic gasket, 8-Pressure plate, 9-Mounting part, 10-Microwave oven. Detailed Implementation

[0021] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can be described as the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0023] As shown in Figures 1-3, the present invention discloses an electronic transformer insulation mounting structure, including a mounting plate 1. The mounting plate 1 is used to weld an electronic transformer 2, and the connecting wires of the electronic transformer 2 extend from the bottom of the mounting plate 1. An electromagnetic shielding cover 3 is provided on the mounting plate 1 corresponding to the position of the electronic transformer 2. The electromagnetic shielding cover 3 is fixed to the mounting plate 1 by a pressure band 4. The opposite side edges of the mounting plate 1 protrude from the outside of the electromagnetic shielding cover 3. The bottom plate of the microwave oven 10 is provided with a slide rail 5 that matches the opposite side edges of the mounting plate 1. The slide rail 5 and the mounting plate 1 are provided with corresponding fixing holes 6. Screws are inserted into the fixing holes 6 to fix the mounting plate 1 to the bottom plate of the microwave oven 10. This invention effectively suppresses the leakage of electric and magnetic field waves from the electronic transformer 2 and avoids electromagnetic radiation impact on other components or the external environment. The electronic transformer 2 is fixed by welding the mounting plate 1, while the electromagnetic shielding cover 3, in conjunction with the mounting plate 1, completely encloses the electronic transformer 2, providing further shielding against electric and magnetic field radiation. The electromagnetic shielding cover 3 is locked onto the mounting plate 1 by a pressure band 4, forming an assembly. This assembly is then connected and fixed to the slide rail 5 via the protruding part of the mounting plate 1, facilitating the installation and positioning of the entire assembly while reducing contact between other parts and the microwave oven. It is fixed using only the slide rail 5 and corresponding screws, all of which are made of insulating material, making it easier to install with insulation from the microwave oven body and reducing contact with other metal surfaces.

[0024] In one embodiment, the slide rail 5 has an inverted L-shaped cross-section, and the bottom of the mounting plate 1 is provided with an elastic pad 7. The elastic pad 7 makes the mounting plate 1 fit tightly against the top inner side of the slide rail 5. That is, the two opposing slide rails 5 cover the upper edge of the mounting plate 1, so that the mounting plate 1 slides from one end to the corresponding position of the slide rail 5, so that the fixing holes 6 are respectively located at the end of the slide rail 5, the four corners of the mounting plate 1, the four corners of the elastic pad 7, and the corresponding positions on the bottom plate of the microwave oven 10. Then, it is locked with screws, so that the mounting plate 1, the electronic transformer 2, and the electromagnetic shielding cover 3 are all mounted on the bottom plate of the microwave oven 10. Due to the presence of the elastic pad 7, the mounting plate 1 is lifted and fits tightly against the top inner side of the slide rail 5, compensating for the error in thickness and making the installation of the electronic transformer 2 more stable. Furthermore, the elastic pad 7 has an opening in the middle, and the bottom plate of the microwave oven 10 forms a groove between the two slide rails 5, so that there is space between the bottom plate of the microwave oven 10 and the mounting plate 1. This prevents the bottom of the mounting plate 1 from directly contacting the bottom plate of the microwave oven 10, thus achieving better heat dissipation.

[0025] Specifically, the pressure band 4 spans across the electromagnetic shielding cover 3. Mounting holes are provided at both ends of the pressure band 4 and corresponding positions on the mounting plate 1, with screws inserted into these holes. The electromagnetic shielding cover 3 can be mounted and dismounted from the mounting plate 1 using the pressure band 4. A suitably sized electromagnetic shielding cover 3 can be made to enclose the original electronic transformer 2 and then mounted on the mounting plate 1 to cover the electronic transformer 2. Generally, two pressure bands 4 are used. These bands are arranged along the same direction on the slide rail 5 for fixation. Alternatively, if the electromagnetic shielding cover 3 is relatively small compared to the mounting plate 1, the two pressure bands 4 can be arranged in a cross configuration to form an integrated structure, which is then locked to the mounting plate 1 with screws on all four sides.

[0026] Furthermore, to further secure the position of the electronic transformer 2, a space is left between the electromagnetic shielding cover 3 and the microwave oven 10. A pressure plate 8 is provided on the side of the microwave oven 10 corresponding to the electromagnetic shielding cover 3. The bottom of the pressure plate 8 has an insulating pad and is tightly attached to the upper surface of the electromagnetic shielding cover 3. Depending on the height of the electromagnetic shielding cover 3, the pressure plate 8 can be positioned at a corresponding location inside the microwave oven 10, such as the inner side of the outer shell or the outer side of the inner liner, to cooperate with the base plate and hold the electromagnetic shielding cover 3 in place. Specifically, the side of the microwave oven 10 has a downward-hooking mounting portion 9, and the pressure plate 8 is inverted L-shaped with a locking hole that matches the mounting portion 9. The pressure plate 8 is inserted into the mounting portion 9 on the side of the microwave oven 10 from bottom to top, thereby further limiting the electromagnetic shielding cover 3 using its shape. Moreover, the parts that can contact the mounting plate 1 and the electromagnetic shielding cover 3, including the slide rail 5, the elastic pad 7, and the pressure plate 8, are all made of insulating material, ensuring that even if the electronic transformer 2 leaks current or generates electromagnetic radiation, it will not directly conduct to other components or the outer shell of the microwave oven 10.

[0027] This invention relates to a microwave oven, comprising the aforementioned electronic transformer insulation mounting structure. The microwave oven of this invention uses the connection method of the above-described mounting structure to fix the electronic transformer 2, facilitating the installation and replacement of the electronic transformer 2 and reducing the risks of electric shock and electromagnetic radiation when using the microwave oven.

[0028] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application.

[0029] The positional relationships described in the figures are for illustrative purposes only and should not be construed as limiting this patent. Clearly, the above embodiments of this utility model are merely examples to clearly illustrate the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. An insulation mounting structure for an electronic transformer, characterized in that, The microwave oven (10) includes a mounting plate (1) for welding an electronic transformer (2), and the connecting wires of the electronic transformer (2) extend from the bottom of the mounting plate (1). An electromagnetic shielding cover (3) is provided on the mounting plate (1) corresponding to the position of the electronic transformer (2). The electromagnetic shielding cover (3) is fixed to the mounting plate (1) by a pressure band (4). The opposite two sides of the mounting plate (1) protrude from the outside of the electromagnetic shielding cover (3). The bottom plate of the microwave oven (10) is provided with a slide rail (5) that matches the opposite two sides of the mounting plate (1). The slide rail (5) and the mounting plate (1) are both provided with corresponding fixing holes (6). Screws are inserted into the fixing holes (6) to fix the mounting plate (1) to the bottom plate of the microwave oven (10).

2. The electronic transformer insulation mounting structure according to claim 1, characterized in that, The slide rail (5) has an inverted L-shaped cross section. The bottom of the mounting plate (1) is provided with an elastic pad (7). The elastic pad (7) makes the mounting plate (1) fit tightly against the top inner side of the slide rail (5).

3. The electronic transformer insulation mounting structure according to claim 2, characterized in that, The elastic pad (7) has an opening in the middle, and the bottom plate of the microwave oven (10) forms a groove between the two slide rails (5), thereby leaving space between the bottom plate of the microwave oven (10) and the mounting plate (1).

4. The electronic transformer insulation mounting structure according to claim 3, characterized in that, The fixing holes (6) are respectively located at the ends of the slide rail (5), the four corners of the mounting plate (1), the four corners of the elastic pad (7), and the corresponding positions on the bottom plate of the microwave oven (10).

5. The electronic transformer insulation mounting structure according to claim 4, characterized in that, The pressure band (4) is straddling the electromagnetic shield (3). Both ends of the pressure band (4) and the corresponding positions on the mounting plate (1) are provided with mounting holes, and screws are inserted into the mounting holes.

6. The electronic transformer insulation mounting structure according to claim 5, characterized in that, The number of pressure bands (4) is at least two, and the pressure bands (4) are arranged in a row or cross arrangement on the electromagnetic shield (3).

7. The electronic transformer insulation mounting structure according to claim 6, characterized in that, There is a space between the electromagnetic shield (3) and the microwave oven (10). The microwave oven (10) has a pressure plate (8) on the side corresponding to the electromagnetic shield (3). The bottom of the pressure plate (8) is provided with an insulating pad and is in close contact with the upper surface of the electromagnetic shield (3).

8. The electronic transformer insulation mounting structure according to claim 7, characterized in that, The microwave oven (10) has a downward hook-shaped mounting part (9) on its side. The pressing plate (8) is inverted L-shaped and has a card hole that matches the mounting part (9).

9. The electronic transformer insulation mounting structure according to claim 8, characterized in that, The slide rail (5), the elastic pad (7), and the pressure plate (8) are all made of insulating material.

10. A microwave oven, characterized in that, Including an electronic transformer insulation mounting structure as described in any one of claims 1-9.

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