KR20110045968A - Microwave oven and door structure of microwave oven - Google Patents

Abstract

PURPOSE: A microwave oven and door structure of microwave oven are provided to improve the productivity of product and to reduce an assembly time by compensating the deviation of the lever contact point due to the assembly deviation of elements. CONSTITUTION: A microwave oven comprises an outer case, a cavity, a door, a latch(500), a latch board(600) and a guide system(700). The outer case accomplishes an outer shape. The door selectively opens and closes the open front side of a cooking chamber and outer case. The latch has up and down reciprocating motion. The latch has a lever protruding toward the rear side. The latch board is located in the internal space of the outer case. The guide system is located in the door.

Description

Microwave oven and door structure of microwave oven

The present invention relates to a microwave oven, and more particularly, to a door structure of a microwave oven and a microwave oven provided with a latch for tilting vertical movement.

In general, a microwave oven stores food by sealing it, and then applies power to a magnetron generating high frequency to irradiate the food with the high frequency generated by vibrating molecules constituting the food. Cooking equipment.

In addition, the microwave oven is easy to control the temperature, it is possible to uniformly cook food of various sizes and shapes due to simultaneous heating of each part of the food, and to save the cooking time, convenience of operation, etc. It is a situation that is widely spread.

On the other hand, in recent years, the ability to apply hot air to food and grill function that can be grilled to add a variety of dishes, such as a variety of additional features are being added more. In order to evenly heat the food it is heated while rotating the food.

Such a microwave is cooked by irradiating high frequency food, and the high frequency irradiated food is completely blocked so as not to leak into the outside space. This is because when the high frequency radiation irradiated to the food leaks into the external space, adversely affects the human body of the user who wants to use the microwave oven.

Therefore, the microwave oven is provided with a latch on the door for selectively opening and closing the internal space, the operation for cooking food according to the signal whether the internal space of the microwave oven is opened or shielded by the contact of the switch by the latch proceeds do.

SUMMARY OF THE INVENTION An object of the present invention is to propose a door structure of a microwave oven and a microwave oven in which the contact position of the switch is prevented due to the dimensions and assembly deviation between parts.

An object of the present invention is to provide a microwave oven and a door structure of a microwave oven having a door structure capable of precise contact.

Microwave according to the present invention, the outer case forming the appearance; A cooking compartment providing a food cooking space in an inner space of the outer case; A door for selectively opening and closing the outer case and the opened front surface of the cooking chamber; A latch provided on the door to move upward and downward and having at least one lever protruding backward; A latch board positioned in an inner space of the outer case to fix a switch operated by the lever; And a guide device positioned in the door to guide the vertical movement trajectory of the latch to be inclined. It is configured to include.

The door structure of the microwave oven according to the present invention, at least one lever protruding to the rear; A latch fixed to the lever and capable of vertical movement; And a guide device for guiding the movement of the latch such that the latch is moved so that the position at which the lever is engaged with the object is biased in a direction engaged with the latch than the position at which the lever is not engaged. It is configured to include.

According to the door structure of the microwave oven and the microwave oven according to the present invention as described above, even if the deviation caused by the assembly of a plurality of components can be expected smooth operation of the switch operation.

As such, the deviation of the lever contact due to the deviation of the assembly of the parts can be compensated, so that the assembly time of the product can be shortened and the productivity of the product can be expected to be improved. You can expect the effect.

In addition, it is possible to expect the effect of improving the reliability of the product by being able to compensate for the deviation of the lever contact, which can also be expected to reduce the service requirements due to the use of the product.

In addition, it is possible to expect the effect of improving the ease of use of using the product due to the reduction in service requirements.

Hereinafter, with reference to the accompanying drawings, a door structure of a microwave oven and a microwave oven according to the present invention configured as described above will be described in detail.

However, the spirit of the present invention may not be limited to the embodiments by the embodiments described below, and those skilled in the art who understand the spirit of the present invention may include other embodiments within the scope of the same idea. It can be easily proposed through addition, modification, deletion, etc., but this will also be included in the spirit of the present invention.

Further, hereinafter, the cooking apparatus according to the present invention will be described with reference to the embodiment for convenience of description, but the present invention is not limited thereto, and the present invention is not limited thereto.

In addition, the terminology used in the present specification or claims is a concept selected for convenience of description, and when grasping the technical contents of the present invention, it should be appropriately interpreted as a meaning corresponding to the technical idea of the present invention.

1 is a partial cutaway view showing the outer appearance and internal configuration of the microwave oven according to the embodiment according to the present invention, Figure 2 is an exploded perspective view showing the configuration of the microwave oven door according to the embodiment according to the present invention It is.

Looking at the microwave oven according to the present invention with reference to the accompanying drawings, the microwave oven is the appearance is formed by the outer case 100 of the rectangular parallelepiped shape having a rectangular box shape with an open front surface, the outer case 100 is external In order to protect a large number of parts mounted in the internal space from the impact of the steel plate made of a certain degree of strength.

The outer case 100 may be formed in a rectangular parallelepiped shape in which at least a part of the front surface is opened and each surface is integrally formed, and the top and left and right sides are integrally formed, and the front and the bottom and the rear surface at least partially opened. It will be possible to be formed while being fastened.

The inner space of the outer case 100 is provided with a cooking chamber 200 for providing a space for cooking food, one side of the cooking chamber 200 provides a space for mounting a number of parts for cooking food The electrical component unit 300 is formed.

The cooking chamber 200 is formed as a rectangular box in the form of a rectangular box with an open front surface, thereby providing a space in which food is cooked. The turntable 210, which is formed in a substantially disk shape while having a predetermined thickness, is mounted on a lower surface of the inner space of the cooking chamber 200.

The turntable 210 supports a container containing food or food on the upper surface, and is tapered downward toward the center portion, so that the turntable 210 stably supports a container containing food or food when the turntable 210 rotates. do.

In the side of the cooking chamber 200 is located the electric part 300 is mounted with a plurality of electric components, the electronic part 300, when the external power is applied to the magnetron 310 to generate a high frequency by the external power source And a capacitor 330 for supplying a constant voltage current to the magnetron 310, and a high voltage transformer 320 for boosting the applied voltage to a high voltage.

The magnetron 310 generates a microwave, for example, a high frequency by a current drawn into the inside, and the high frequency generated from the magnetron 310 moves to an inner space of the cooking chamber 200 to move into an inner space of the cooking chamber 200. The food placed in the dish is heated to cook.

The magnetron 310 is a high efficiency component having good efficiency and is provided with a current that is boosted to high pressure by the high voltage transformer 320 as a large output component. At this time, the current provided at high voltage in the high voltage transformer 320 is supplied to the magnetron 310 while maintaining a constant voltage by the capacitor 330.

That is, the capacitor 330 maintains the high voltage current provided from the high voltage transformer 320 at a constant voltage and starts the initial operation of the magnetron 310 or stops the operation and restarts the operation, or the current is constant. If it is not supplied and the voltage is not constant, the operation is to provide a current of a constant voltage to the magnetron 310.

The front surface of the outer case 100 located in front of the electric part 300 is cut off by a predetermined area so that the electric part 300 is in communication with the external space of the outer case 100, and has the cut out area The front of the outer case 100 is equipped with a control panel 340 is provided with a knob and buttons for the user to directly manipulate the food when cooking.

The control panel 340 is formed in the form of a square plate having a predetermined thickness as a whole, the inner space or the rear of the control panel 340, for electrically connecting the circuit components mounted while a plurality of circuit components are mounted A PCB, which is a printed circuit board on which a connection circuit is printed, is provided.

The PCB is equipped with a microcomputer (MICOM) having a variety of information for cooking of food while controlling a plurality of electrical components, and a plurality of electrical components are operated and controlled by a variety of information embedded in the microcomputer to control food I will cook.

In addition, the control panel 340 is mounted on the front of the outer case 100, to form a part of the front exterior of the outer case 100, the front and the knob and the button is provided, the knob and the button One side of the display is provided with a display for informing the user of information on the cooking state of the food being cooked in the inner space of the cooking chamber 200 or the operating state for cooking the food and the cooking time, the type of cooking and the like.

Since the display is a part for transmitting information to the user, any configuration may be used as long as the display can transmit information to the user. That is, it is also possible to be configured to transmit information in the form of letters or numbers, such as LED (LED), can express a variety of movements, formed of LCD panel which is one of the wide range of liquid crystal device It may also be configured in the form of informing the user the information in the image, it may also be configured in the form of providing the information to the user by a voice output device is provided.

Accordingly, the display may be configured to deliver information to the user in any form, such as voice, screen, or image, and may be configured to enable all forms such as image, voice, and screen, or may be configured in only one form to provide information to the user. It will also be possible to be configured to deliver.

Hereinafter, a configuration of the door 400 according to the present invention will be described with reference to FIG. 2.

One side of the control panel 340 is equipped with a door 400 for selectively opening and closing the open front of the cooking chamber 200. The door 400 is formed in the shape of a square plate having a predetermined thickness as a whole and is rotatably mounted by being hinged to the front surface of the outer case 100.

As such, when the door 400 is mounted on the front surface of the outer case 100, the front surface of the outer case 100 is formed by the control panel 340 and the door 400.

The central portion of the door 400 is formed so that the user can check the inner space of the cooking chamber 200 in the outer space. That is, the user can check the cooking state of the food located in the interior space of the cooking chamber 200 or the state of the interior space of the cooking chamber 200 without rotating the door 400 to improve convenience of use.

The front surface of the door 400 is provided with a handle 402 that can be gripped when the user wants to rotate the door 400. The handle 402 may be formed as a separate member and coupled to the front surface of the door 400 to be easily gripped by the user. The front surface of the door 400 may be recessed to the rear so as to be gripped by the user. It is also possible to be formed to facilitate.

The door 400 is provided with a front cover 410 forming a part of the front exterior. The front cover 410 is formed in a general "C" shape when viewed from the front while having a certain thickness, and the edge portion is formed to be bent backward while having a certain length. The front cover 410 can be formed in a variety of colors has the advantage that the appearance is diversified.

In addition, it is possible to change the front cover 410 to a variety of colors, so that users can choose a color that matches their kitchen environment, it is possible to change the color of the appearance has the advantage that can meet a variety of users' preferences do.

The rear side of the front cover 410 is a transparent member 420 is located. The transparent member 420 is formed in the shape of a square plate having a thickness of a certain degree, such as transparent glass in order to enable the user to check the internal space of the cooking chamber 200 without rotating the door 400. It is made of material.

The rear side of the transparent member 420 is further attached to the transparent member 420 by attaching a reflective film or the like for reflecting the heat emitted from the inner space of the cooking chamber 200 to the inner space of the cooking chamber 200 Will be minimized. As such, minimizing heat applied to the transparent member 420 prevents damage to a user's body located in the external space by minimizing heat transferred to the external space through the door 400 and the transparent member 420. It will have the advantage of preventing damage.

The rear side of the transparent member 420 is positioned a door panel 430 is seated and supported by the edge portion of the transparent member 420. The door panel 430 has a predetermined thickness and is formed in a shape in which the central portion is cut off, and is formed in a substantially "ㅁ" shape when viewed from the front.

The front surface of the door panel 430 is recessed to the rear having a predetermined area to form a space in which the transparent member 420 is seated, and is supported while the transparent member 420 is seated in the space.

The central portion of the door panel 430 is cut out to have a predetermined area, and through this cut out surface, the user can check the inner space of the cooking chamber 200 without rotating the door 400.

The support frame 440 supporting the door panel 430 is located at the rear of the door panel 430. The support frame 440 is formed in the form of a square plate having a predetermined thickness as a whole, choke to prevent the high frequency supplied to the inner space of the cooking chamber 200 to leak into the outer space on the upper and lower surfaces and both sides. (Choke) structure is formed.

In the central portion of the support frame 440, a transparent viewing window made of a transparent material so that a user can check the internal space state of the cooking chamber 200 without rotating the door through the transparent member 420 and the support frame 440. 450).

The viewing window 450 may be formed of a plurality of layers in which a plurality of glasses are fixed to one frame, or may be formed of one glass panel and mounted on a cut center of the support frame 440.

That is, the user places food to be cooked in the inner space of the cooking chamber 200, and then rotates the door 400 to shield the inner space of the cooking chamber 200, and knobs and buttons of the control panel 340. Will cook food using.

At this time, the user can check the cooking state of the food placed in the interior space of the cooking chamber 200 through the transparent member 420 and the viewing window 450, and determine the degree of cooking of the food to proceed or end the cooking. Will be judged.

The rear cover 460 is located on the rear side of the support frame 440, the rear cover 460 is formed in the form of a square plate having a predetermined thickness, the center portion of the transparent member 420 And through the viewing window 450 is cut to have a certain area in order to be able to check the internal space of the cooking chamber 200.

On the other hand, the side of the support frame 440 is inserted into the front of the outer case 100 when the door 400 is mounted on the front of the outer case 100 and then rotated to shield the cooking chamber 200. While being latched to prevent the opening of the door 400 is mounted.

Hereinafter, a latch according to an embodiment of the present invention will be described with reference to FIG. 3. 3 is a partial side cross-sectional view showing a closed state of the door of the microwave oven according to an embodiment of the present invention.

Referring to the drawings, the latch 500 is formed in the shape of a square plate having a predetermined thickness and elongated in the vertical direction, and the lever hole 110 formed on the front surface of the outer case 100 in the upper half and the lower half. At least a portion of the lever 510 is inserted into the protrusion protrudes to the rear.

As such, the latch 500 is formed in an approximately "c" shape when viewed from the right side by the lever 510 positioned at the upper half and the lower half, and the lever 510 is latched on the front surface of the outer case 100. It is inserted into the latch board 600 mounted on the rear of the panel which is inserted through the lever hole 110 formed at a position corresponding to the lever 510 formed in the 500 and forms the front of the outer case 100. The opening and closing signals of the door 400 are transmitted to the microcomputer of the electronic device 300 while the switch is turned on / off.

The lever 510 is extended to the rear with a certain thickness and length, the end portion is bent upwards toward the rear at a predetermined angle and then bent downward. This end portion is to squeeze or release the button of the switch fixed to the latch board 600.

The rear half of the lever 510 is formed in an approximately '∧' shape when viewed from the side, and the latter half is formed in an approximately '┓' shape, and a lower surface of an end portion bent downward presses the button of the switch. The switch generates a closed state signal of the door 400 and transmits the signal to the microcomputer. When the switch button is released, the switch generates the open state signal of the door 400 and transmits the signal to the microcomputer. do.

On the other hand, the latch 500 is mounted on the side of the support frame 440 to be movable in the vertical direction, the guide device for guiding the vertical movement of the latch 500 to the support frame 440 and the latch 500. 700 is provided. The guide device 700 may be any configuration capable of guiding the vertical movement of the latch 500.

In the following embodiment, the guide protrusion 710 formed in the latch 500 and at least a portion of the guide protrusion 710 are accommodated to guide the movement of the latch 500 by guiding the movement of the guide protrusion 710. For example, the guide apparatus 700 including the protrusion guide 720 will be described.

Of course, the configuration in which the guide device 700 is formed of the guide protrusion 710 and the protrusion guide part 720 may include a guide protrusion 720 formed of a groove or a hole having a predetermined area. It is also formed to accommodate at least a portion of the 710, at least a portion of the guide protrusion 710 is accommodated may be formed in a configuration that the movement is guided by the projection guide portion 720, the projection guide portion 720 and When the guide protrusion 710 is moved by supporting a part of the guide protrusion 710 by being made in the same shape, the guide protrusion 710 may be configured to be guided by the protrusion guide 720.

In addition, the support frame 440 may be formed with a protrusion guide for guiding the movement of the latch 500 by guiding the movement of the guide protrusion 710.

On the other hand, the guide protrusion 710 is formed to protrude in a cylindrical shape having a predetermined size to the side on one side of the latch 500. The guide protrusion 710 may be integrally formed on the side of the latch 500, it may be possible to attach a separate member. However, it is preferable to form integrally from the viewpoint of strength or productivity.

The side surface of the support frame 440, that is, the side on which the latch 500 is mounted, is formed with a projection guide portion 720 that accommodates at least a portion of the guide protrusion 710. The protrusion guide 720 is formed in the shape of a groove or a hole having a larger cross-sectional area than the cross-sectional area of the guide protrusion 710, by receiving at least a portion of the guide protrusion 710 to guide the movement of the guide protrusion 710 It guides the vertical movement of the latch 500.

The protrusion guide portion 720 for guiding the guide protrusion 710 is formed in an elliptical shape long in the vertical direction, the center of the upper half is more forward than the center of the lower half, that is, the door in the reference of the outer case 100 It is positioned to be biased in the (400) direction.

In other words, the projection guide 720 is formed to have a substantially "＼" shape when viewed from the side of the support frame 440, to guide the vertical movement trajectory of the latch 500 inclined do.

When the center of the upper half of the protrusion guide 720 is located in front of the lower half of the center, when the guide protrusion 710 is guided by the protrusion guide 720, the guide protrusion 710 is seen in the drawing. When moved downward, the front of the outer case 100 is in close contact with each other, and the latch 500 is in close contact with the front of the outer case 100, and the lever 510 formed at the latch 500 is further rearward. It can be located.

As such, when the latch 500 is formed closer to the front surface of the outer case 100 as the protrusion guide part 720 moves downward, the latch board 600 may be unbalanced due to dimensions and assembly deviations between components. Even if not assembled at the correct position, the latch 500 can naturally squeeze the button of the switch that is naturally mounted on the latch board 600 has the effect of improving the assembly.

At this time, the distance between the center of the guide protrusion 710 is located at the upper end of the protrusion guide portion 720 and the center of the guide protrusion 710 located at the lower end of the protrusion guide portion 720 is approximately 1 to 1.5. It is preferable to be formed to have a distance of mm. Of course, it may be possible to move out of the range of 1 to 1.5 mm.

However, when the distance between the center of the guide protrusion 710 has a distance shorter than 1mm, or has a distance longer than 1.5mm, the lever 510 is a button of the switch by the size and assembly deviation between the parts As the case of not accurately pressing the center of the guide protrusion 710 which is located at the upper end of the protrusion guide portion 720 and the guide protrusion 710 which is located at the lower end of the protrusion guide portion 720 The distance between the centers is formed to have a distance between 1 mm and 1.5 mm.

As described above, the protrusion guide part 720 formed to have a predetermined degree of inclination is formed to be inclined so that the lower end part is biased in the engagement direction of the door 400, that is, the latch 500.

Of course, when the coupling direction of the lever 510 is changed, the inclination direction of the projection guide 720 is also configured to vary. For example, when the door 400 is closed while the coupling direction of the lever 510 is connected from the lower side to the upper side, the inclined direction of the protrusion guide part 720 is formed to face in the opposite direction.

In other words, when the lever 510 provided in the latch 500 moves upwards and downwards, the lever 510 is formed to press a button of the switch fixed to the latch board 600. When the lower end is directed toward the lever 510 than the upper end, and the lever 510 is formed to squeeze the button of the switch fixed to the latch board 600 while moving from below to upward, the projection guide 720 is the upper end It is configured to be biased in the direction of the lever 510 than the lower end.

As such, the protrusion guide part 720 is formed in such a way that the lever 510 formed on the latch 500 may be different in shape depending on a direction in which the switch button fixed to the latch board 600 is pressed. When the door 400 shields the front surface of the outer case 100, the rear end of the lever 510 is formed to be further rearward.

According to the door structure of the microwave oven and the microwave oven according to the present invention constituted as described above, in the door structure of the microwave oven and the microwave oven, which is made of a plurality of components combination, the dimensional deviation and assembly deviation of each component is generated , Has the effect of preventing malfunction of the switch due to dimensional deviation and assembly deviation, has the effect of greatly improving the reliability of the product by the malfunction of the switch, and has the effect of maximizing the assembly and productivity of the product do.

Therefore, the microwave oven and the door structure of the microwave oven according to the present invention will be greatly used in the industry of cooking appliances.

1 is a partial cutaway perspective view showing the appearance and internal configuration of the microwave oven according to the present invention.

Figure 2 is an exploded perspective view showing a door configuration of a microwave oven according to the present invention.

Figure 3 is a partial side cross-sectional view showing a state in which the front of the microwave oven is shielded.

Explanation of symbols on the main parts of the drawings

100. Outer case 110. Lever hole

200. Cooking Room 300. Battlefield

310. Magnetron 320. High voltage transformer

330. Capacitor 340. Control panel

400. Door 402. Handle

410. Front cover 420. Transparent member

430. Door panel 440. Support frame

450. Viewing window 460. Rear cover

500. Latch 510. Lever

600. Latchboard 700. Guidance Device

710. Guide Projects 720. Projection Guides

Claims (9)

Outer case forming an appearance; A cooking compartment providing a food cooking space in an inner space of the outer case; A door for selectively opening and closing the outer case and the opened front surface of the cooking chamber; A latch provided on the door to move upward and downward and having at least one lever protruding backward; A latch board positioned in an inner space of the outer case to fix a switch operated by the lever; And A guide device positioned in the door to guide the vertical movement trajectory of the latch to be inclined; Microwave oven including a. The method of claim 1, The front surface of the outer case microwave oven is formed with a lever hole through which at least a portion of the lever. The method of claim 1, The guide device is a microwave oven formed so that the lever toward the front surface of the outer case in the direction to operate the switch, the vertical movement trajectory of the latch is formed to have an inclination in the engagement direction of the lever. At least one lever protruding rearward; A latch fixed to the lever and capable of vertical movement; And A guide device for guiding the movement of the latch such that the latch is moved so that the position at which the lever is engaged with the object is biased in a direction where the latch is engaged with the non-locked position; Door structure of the microwave oven including a. The method according to claim 1 or 4, The lever is a microwave oven and the door structure of the microwave oven is formed integrally with the latch. The method according to claim 1 or 4, The guide device, A guide protrusion formed on the latch; And A protrusion accommodating part accommodating at least a portion of the guide protrusion to guide the movement of the guide protrusion by vertical movement of the latch to guide the movement of the latch to be inclined; Door structure of a microwave oven and a microwave oven including a. The method of claim 4, wherein And the projection receiving portion is formed such that the distance between the center when the lever is located at the upper end of the projection receiving portion and the center when it is located at the lower end has a distance of 1 to 1.5 mm. The method of claim 6, The guide protrusion is a door structure of a microwave oven and a microwave oven is formed integrally with the latch. The method of claim 6, The protrusion receiving portion of the microwave oven and the microwave oven is formed inclined so that the lower end is biased in the engagement direction of the latch than the upper end.

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