KR20040103544A - Reinforcing structure for microwave oven - Google Patents

Abstract

PURPOSE: A reinforcing structure of a microwave oven is provided to prevent the damage by contacting a door and a front plate. CONSTITUTION: A reinforcing bead(155) to be depressed backward is formed under a front plate(150). The reinforcing bead is formed in a portion corresponding to a rotation area of a rear lower corner of a door. By the reinforcing bead, the front plate is not transformed by the load in the door. Moreover, the transformation of the front plate by the load in a long time and from the external force is prevented. Therefore, the touching between the lower part of the front plate and the rear lower part of the door is prevented when the door is opened and closed.

Description

Reinforcing structure for microwave oven

The present invention relates to a microwave oven, and more particularly, to improve the shape of the lower structure of the front plate attached to the front of the microwave oven cavity, to prevent deformation of the front plate by the load of the door. It relates to a reinforcement structure.

A microwave oven is a device that generates microwaves in a magnetron by supplying a current, and heats food by irradiating the microwaves with heated objects such as food. Such a microwave oven is generally classified into a conventional microwave oven used on a kitchen furniture or the like and a hood-use microwave oven provided on an upper wall surface of a gas oven range or the like and having an exhaust function. And the door of the microwave oven can be divided into a generally used side opening and closing structure, the up-down structure that rotates around the hinged lower portion to open from the top to the bottom.

1 shows a conventional microwave oven equipped with a door having an up-down opening and closing structure. As shown, a cavity 10 is provided that forms the body of the microwave oven. The cavity 10 forms the overall structure of the microwave oven, and a cooking chamber 20 in which food is cooked and an electrical component part 35 for controlling the cooking chamber 20 in the upper portion of the cooking chamber 20 are formed. do.

In general, microwaves are used as a heating source in a microwave oven, and a heater or light wave may be used as an auxiliary. In this case, a configuration for providing the microwave, ie, the microwave, to the cooking chamber 20 is provided in the electrical component part 35. And a heater is attached to the inner upper surface of the cooking chamber 20 to perform a quick cooking.

The cooking chamber 20 is selectively opened and closed by the door 30. The door 30 closes the entrance of the cooking chamber 20 to prevent microwaves or the like from leaking out of the cooking chamber 20. When the cooking is finished, the food is opened to take out the food. In addition, the door 30 is formed in an up-down structure that is rotated about the hinge 34 formed in the lower portion of the cooking chamber 20 to open.

The inside of the door 30 is provided with a latch 32 to act as a hook when opening and closing the door 30. The latch 32 is inserted into one side of the cavity 10 through the latch hole 14 of the front plate 12 attached to the front surface of the cavity 10, and the inner side of the cavity 10. It is fastened to a latch board (not shown) installed at the same time and in contact with a micro switch (not shown).

Such a latch 32 serves to maintain the closed state of the door 30 by acting as a hook. And it detects the closed state of the door 30 and serves to prevent cooking from proceeding in the open state of the door 30. This is to prevent the generation of microwaves harmful to the human body in the state in which the door 30 is opened, and to prevent the microwaves harmful to the human body from being released to the outside of the cooking chamber 20.

The upper part of the cavity 10 is provided with an electric component 35, it is possible to generate microwave waves as well as to control the microwave oven. In addition, a display window may be provided to externally display the situation according to the use of the microwave oven.

However, the conventional up-down door having the above configuration has the following problems.

The door 30 has a metal door panel and an electrodeposition part made of tempered glass on the front of the door panel to form a luxurious appearance. In the case of the door panel, in order to prevent the high heat of the heater attached to the cooking chamber 20 from being transferred to the electrodeposition part attached to the outside of the microwave oven, the electrode panel is bent forward and attached to the front surface of the door panel. The weight of the door panel must be heavier because the space with the wealth must be formed.

In the case of a door that is opened and closed in an up-down manner, the hinge 34 and the front plate 14 supporting the hinge, in particular, the front plate 14 by the weight of the door itself when the door 30 is opened. The load is concentrated in the lower part of). When the door 30 is inadvertently opened at a high speed, an even greater load is placed on the lower portion of the front plate 14 due to the acceleration generated when the door 30 is opened. Deformation will occur.

By such a deformation, a problem occurs that the lower rear surface of the door 30 is in contact with each other under the front plate 14 when the door 30 is opened or closed. In addition, due to such a contact phenomenon, the lower front of the front plate 14 and the rear surface of the door 30 were damaged, as well as the noise was generated.

Accordingly, the present invention is to solve the problems of the prior art as described above, the front plate is deformed by the weight of the door when opening the up-down door, the door and the front plate is generated by contact It is an object of the present invention to prevent damage.

And another object of the present invention is to form a lower structure of the front plate that can withstand the concentrated stress by the weight of the door.

1 is a perspective view showing the configuration of a general microwave oven,

2 is an exploded perspective view showing the structure of a microwave oven according to the present invention;

Figure 3 is a partial perspective view showing the reinforcement bead formed on the front plate according to the present invention,

Figure 4 is a partial perspective view showing another embodiment of the reinforcement bead formed on the front plate according to the present invention.

Explanation of symbols on the main parts of the drawings

100 ..... Cavity Assembly 110 ..... Cavity

130 ..... Full length 150 ..... Front plate

151 ..... Hinge Holes 153 ..... Latch Holes

155 ..... Reinforcement Bead 170 ..... Base Plate

190 ..... Back plate 200 ..... Outer casing

300 ..... Door M ..... Fan Motor Assembly

The reinforcing structure of the microwave oven according to the present invention for achieving the above object, in the front plate is provided with a door for forming a front surface of the microwave oven, and selectively shielding the front of the cavity in which food is cooked The lower portion of the front plate is characterized in that the reinforcement bead (bead) is formed to be recessed to the rear. The reinforcement bead is preferably formed at a portion corresponding to the lower rear surface of the door.

According to the present invention having such a configuration, the front plate is deformed by the weight of the door when the door is opened in an up-down manner, thereby preventing damage caused by the back surface of the door and the front plate coming into contact with each other. Can be.

Hereinafter, a door for opening and closing a microwave oven according to the present invention as described above and a main body to which the door is attached will be described in detail with reference to the accompanying drawings.

2 shows a microwave oven having an up-down door according to the present invention. The microwave oven selectively covers the front surface of the cavity assembly 100 and the outer casing 200 which is formed to surround the outside of the cavity assembly to actually cook and the exterior of the cavity assembly. It is configured to include a door 300 for opening.

The outer casing 200 has a main purpose of protecting the cavity assembly 100 serving as a main function of the microwave oven. Since all components for operating the microwave oven are installed in the cavity assembly 100, the cavity assembly 100 should be protected from external shocks and foreign substances. For this purpose, the outer casing 200 is mainly made of a steel plate can protect the cavity assembly 100 from the outside.

The cavity assembly 100 is a cavity 110 is formed to cook food, and the electrical equipment 130 is installed on the upper portion of the cavity 110 is installed a variety of electrical equipment for cooking food and The front plate 150 is installed at the front of the cavity 110, the base plate 170 is installed on the bottom, and the back plate 190 is provided on the back.

The electrical unit 130 attached to the upper portion of the cavity 110 is a function performing unit for performing the actual function of the microwave oven. The electronic device 130 includes a magnetron (not shown) for generating a high frequency, a waveguide (not shown) for guiding the high frequency generated from the magnetron to a cooking chamber, and a high voltage required for driving the magnetron. It is equipped with a high pressure transformer (not shown) and a high pressure capacitor (not shown) for generating and supplying, and a fan motor assembly for cooling the electronic parts such as the magnetron, the high pressure transformer, and the high pressure capacitor and discharging the steam in the refrigerator. M) is installed.

The front plate 150 is formed on the front of the electric part 130 and the cavity 110, the latch hole 153 and the hinge hole 151 for selectively opening and closing the door 300. do. And the bottom surface is provided with a base plate 170 for supporting the cavity 110 from the bottom, the back plate 190 for protecting the rear of the cavity 110 and the electrical equipment 130 from the outside ) Is formed. The base plate 170 and the back plate 190 may also be formed of an iron plate to easily protect the cavity 110 and the electric component 130 from external shocks.

In addition, the door 300 may be attached to the front of the microwave oven to selectively open and close the cavity 110. In order to prevent the microwave wave irradiated to the cavity 110 of the microwave oven, the door 300 must close the front of the cavity 110 while the microwave oven is operating.

The door 300 abuts the front plate 150 and is hinged to the lower portion of the front plate 150 via a hinge (not shown). In addition, a latch (not shown) coupled to the latch hole 153 formed on the front plate 150 is formed at the upper rear surface of the door, and serves to closely contact the door 300 to the front plate 150.

If the front plate 150 or the edge of the door 300 that is in contact with the front plate 150 is deformed due to an external impact, microwaves may leak to the outside, so that the door 300 is the front plate 150. It is important to close) tightly.

3 shows the lower part of the front plate 150 from which the door 300 is disassembled. As shown in the lower portion of the front plate 150, a reinforcement bead 155 recessed inwardly and a hinge hole 151 to which the hinge is coupled are formed.

The reinforcement bead 155 is formed horizontally in the lower portion of the front plate 150. The portion where the reinforcement beads are formed is located in a portion where the lower portion of the door 300 can reach when the door 300 is opened or closed, that is, a lower end of the rear surface of the door 300 performs a rotational movement.

In addition, in order to prevent the microwaves inside the cavity 110 from leaking to the outside by the installation of the reinforcement beads 155, a lower portion of the front plate 150, which is a portion where the reinforcement beads 155 is formed, is relatively wide. It is desirable to be. That is, by the door 300, the front plate 150 should be formed to a size sufficient to block the lower portion of the front plate 150 including the reinforcing beads 155.

On the other hand, in the case of the up-down door, the intensive stress acts on the lower part of the front plate 150 by the weight of the door, and is formed in the lower part of the front plate 150 by the concave reinforcement bead 155. It can respond more effectively to concentrated stress.

The stress acting on the lower portion of the front plate 150 is transmitted to the front plate 150 perpendicularly, and by this stress, deformation occurs in the front plate 150. However, in the case of the reinforcement bead 155 is formed concave, since the acting stress is transmitted to the concave surface rather than the horizontal plane, it is possible to change the concentrated stress to the dispersion stress, it is possible to reduce the amount changed by the stress. This can be thought of as the same principle that the arch-shaped bridge that can rise convexly upward and disperse external force rather than flat form. That is, in the case of the front plate 150 in which the arc-shaped reinforcement bead 155 recessed inside is formed, external force, that is, the force applied to the front plate 150 may be dispersed by the door 300, and thus it may effectively cope with deformation. .

In addition, even when deformation occurs in the front plate 150 due to the load of the door 300 for a long time, the lower part of the door 300 and the lower part of the front plate 150 are formed by the formation of the reinforcement beads 155 recessed inward. May not touch each other.

4 shows another embodiment of the reinforcement bead 155. As shown in the drawing, both ends of the reinforcement beads 155 formed laterally in the lower portion of the front plate 150 are enlarged. In practice, since a large stress is transmitted around the hinge hole 151 of the front plate 150, the reinforcement bead 155 is close to the hinge hole 151 and is preferably formed larger in a range that does not harm the appearance. Do.

Within the scope of the basic technical spirit of the present invention as described above, of course, many other modifications are possible to those skilled in the art. That is, the plurality of reinforcement beads 155 may be partially formed in the lower portion of the front plate 150, and the reinforcement beads are continuously formed to more effectively cope with the load acting on the lower portion of the front plate 150. It will be possible to form a plurality of 155 sequentially. Therefore, the present invention should be construed based on the appended claims.

As described above, the front plate of the microwave oven according to the present invention can more effectively withstand the load concentrated on the lower part of the front plate by the weight of the door by means of the reinforcement beads formed at the lower part, so that the deformation of the front plate can be improved. Decreases.

And since the deformation occurring in the front plate is prevented, it is possible to solve the problem that the lower end of the rear surface of the door and the lower end of the front plate abut when the door is opened and closed.

In addition, the lower end of the door is not in contact with the lower part of the front plate by a reinforcement bead concavely formed in the front plate even when the front plate is deformed due to the load continuously transmitted to the door and the operation of pressing the open door by the consumer. Therefore, noise and damage due to contact can be prevented.

Claims (2)

In the front plate which forms the front surface of the microwave oven, and is equipped with a door for selectively shielding the front of the cavity in which food is cooked, a reinforcing bead recessed to the rear of the front plate is formed to form a front plate and a lower door Reinforcement structure of a microwave oven, characterized in that configured to prevent interference. The reinforcement structure of the microwave oven according to claim 1, wherein the reinforcement bead is formed at a portion corresponding to the movement area in which the edge of the bottom of the rear surface of the door rotates.