KR100229140B1 - Power supply to lamp in microwave oven - Google Patents

Abstract

The present invention relates to a lamp power supply of a microwave oven, the purpose of which is to install a terminal housing at the end of the wire wire connected to the external power source to facilitate the electrical connection with the input terminal provided in the socket member and at the same time to prevent electric shock It is to prevent.

Lamp power supply of the microwave oven according to the present invention is provided in the socket member 451 in which the lamp 452 is mounted to illuminate the cooking chamber, the input terminal 455 protruding upwards, the wire wire connected to the external power source ( A pair of connection holes 471 are provided at the end of the 460 to allow the input terminal 455 to be electrically connected to each other, and a terminal housing 470 for elastically changing a predetermined width of the connection holes 471 may be provided. do.

Therefore, the wire 460 and the input terminal 455 are more easily connected through the terminal housing 470 in which the connection hole 471 is formed, thereby supplying power to the lamp 452 and disassembling the outer case 100. Even in one state, the body part is prevented from coming into contact with the electrical connection, thereby preventing an electric shock. In addition, even when the spacing of the input terminals 455 is slightly deformed, the spacing of the connection holes 471 can be changed by a predetermined width, thereby making it easier to connect them without replacing the socket member 451. It works.

Description

Microwave Lamp Power Supply

The present invention relates to a lamp power supply of a microwave oven for cooking food using a magnetron, and more particularly, to a power supply device for a lamp installed in the guide duct of the electrical equipment compartment to illuminate the cooking chamber.

In general, a microwave oven radiates a high frequency of 2450 MHz in a magnetron into a cooking chamber to repeatedly convert a molecular array of moisture contained in the food, thereby cooking food by frictional heat between molecules.

As shown in FIG. 1, the microwave having such a function is combined with the inner case 20 and the inner case 20 that form the cooking chamber 30 at a predetermined interval to form an exterior and is partitioned from the cooking chamber 30. It consists of an outer case 10 forming the electrical equipment compartment 40.

An opening of the cooking chamber 30 is formed in the front plate 21 constituting the inner case 20, and the door 31 provided with the see-through part 31a is rotatably coupled by the hinge member so that the cooking chamber 30 is provided. Open and close the). And the right side of the front panel 21 is coupled to the control unit 32 provided with a display unit and a plurality of operation buttons.

The outer case 10 is bent in a "c" shape to form an upper plate portion and both side plate portions, and the front and rear ends thereof are coupled to extension portions of the front plate 21 and the rear plate 23 of the inner case 20, respectively. Configure the exterior body of the microwave oven.

The space formed between the right side plate 22 and the outer case 10 of the inner case 20 is an electrical equipment compartment 40 in which various electrical appliances are built, and here the magnetron 41 oscillates high frequency to radiate into the cooking compartment 30. ), A high voltage transformer 42 for applying a high voltage to the magnetron 41, and a cooling fan 43 for cooling an electric component that generates heat.

In addition, a plurality of suction holes 22a communicating the cooking chamber 30 and the electrical equipment compartment 40 and a plurality of discharge holes communicating the outside with the cooking chamber 30 are formed on both side plates 22 constituting the inner case 20. C) are perforated, and the electrical equipment compartment 40 is guided to the cooking chamber 30 through the suction holes 22a on the side of the electrical equipment compartment 40 of the right side plate 22 on which the suction hole 22a is formed. Guide duct 44 is installed.

In addition, the lighting device 45 is disposed inside the guide duct 44 corresponding to the suction hole 22a, and illuminates the cooking chamber 30 at the time of cooking administration, which is described in more detail with reference to FIG. 2. Is as follows.

First, the lighting device 45 is composed of a lamp member 45a coupled to the socket member 45a, the socket member 45a provided with a locking projection 45c at the upper end of the power supply. The upper portion of the socket member 45a is provided with a pair of input terminals 45d to be exposed to the outside, and the tips of the wire lines 46 connected to the external power source are respectively joined by welding means to supply power. . The upper surface of the guide duct 44 is formed with a fastening groove 44a opened at a predetermined length so as to be connected to the outside.

Therefore, when the socket member 45a is inserted and pushed inward through the opening of the fastening groove 44a, the locking jaw 45c of the socket member 45a is caught on the upper surface of the guide duct 44 so that the lighting device 45 It is installed.

In the microwave oven configured as described above, the high frequency oscillated from the magnetron 41 is radiated into the cooking chamber 30 to cook the cooked material, and the outside air is sucked by the cooling fan 43 to induce electrical parts of the electronic component room 40. Cooling is guided to the cooking chamber 30 through the guide duct 44 and the plurality of suction holes (22a) to remove the cooking odor and wet air. In addition, the lighting device 45 is turned on to illuminate the cooking chamber 30 through the suction hole 22a, so that the user can see the cooking state of the cooked object through the seeker 31a of the door 31 from the outside.

However, since the lighting device 45 of the microwave oven is simply fitted laterally into the fastening groove 44a formed so as to be connected to the outside, it is not firmly fastened during movement, causing rattle noise. The lamp 45b may come off from the socket member 45a.

In addition, the tip of the wire 46 is joined to the input terminal 45d for guiding power supply to the lamp 45b by welding means, and the joint is exposed to the electrical component room 40 as it is, thus causing an electric shock. There is a risk of occurrence.

That is, in the process of inspecting or repairing the inspector or serviceman after disassembling the outer case 10, a part of the body may accidentally come into contact with the junction of the input terminal 45d through which current flows, which may cause an electric shock. .

The present invention is to solve this problem, the object of the present invention is to improve the connection structure of the input terminal and the wire of the socket member to facilitate the electrical connection, even when the outer part of the body part is the electrical connection portion It is to provide a lamp power supply of the microwave oven to prevent contact with the electric shock.

1 is an exploded perspective view showing the internal structure of a conventional microwave oven.

2 is an exploded perspective view showing a conventional lighting device.

3 is an exploded perspective view showing the overall structure of the microwave oven according to the present invention.

4 is an exploded perspective view showing an extract of the lighting apparatus according to the present invention.

5 is a front view of the terminal housing according to the present invention.

* Explanation of symbols for main parts of the drawings

100: outer case 200: inner case

400: Electric equipment room 440: Information duct

450: lighting device 451: socket member

452 lamp 453 outward flange

454 fastening hole 455 input terminal

460: wire wire 470: terminal housing

471: feeding hole 472: reinforcing rib

473: opening

The present invention for achieving the above object, the inner case formed in the side plate to form a cooking chamber therein to guide the air inlet; An outer case coupled to the inner case and spaced apart from each other by a predetermined interval to form an electrical equipment compartment partitioned from the cooking chamber; A cooling fan installed at the rear of the electronic component compartment to cool the electrical components mounted in the electronic component compartment; A guide duct for guiding a part of the air sucked by the cooling fan to the cooking chamber through the suction hole; A microwave oven, comprising: a socket member disposed on a guide duct, the lamp member being mounted to illuminate the cooking chamber through a suction hole;

A pair of input terminals protruding in a rod shape to the socket member and spaced apart from each other to be connected to an external power source;

A terminal housing provided at an end of a wire line connected to an external power source to supply power to the lamp through an input terminal, the terminal housing having a pair of connection holes spaced at a predetermined interval to be electrically connected to the input terminal;

The connection hole of the terminal housing is formed in the shape of a plate between the connection holes in connection, and even if the distance of the input terminal is changed by a predetermined width, the openings at the lower end so that the connection hole spacing also elastically change the predetermined width so that the connection hole is easily connected. It is characterized by having a reinforcing rib formed.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. Figure 3 shows the overall structure of the microwave oven according to the present invention, Figures 4 and 5 are an exploded perspective view and a front view of the terminal housing shown by excerpting the lighting device.

As shown in FIG. 3, the microwave according to the present invention is coupled to the inner case 200 and the inner case 200 in which the cooking chamber 300 is formed so that one surface is opened therein so as to be spaced a predetermined distance apart from the cooking chamber 300. It is provided with an outer case 100 forming an electrical equipment compartment 400 to form a partition.

The inner case 200 includes a front plate 210 having an opening of the cooking chamber 300 formed at one side thereof, a rear plate 230 and a side plate 220 closing the rear thereof. At this time, the front plate 210 and the rear plate 230 is extended by a predetermined width so as to partition the front and rear of the electrical equipment compartment 400 from the outside. The front surface of the front plate 210 is coupled by using a hinge member to open and close the cooking chamber 300, the door 310 is configured with a perspective portion 311, the control unit 320 provided with operation buttons and a display unit for operating a microwave oven Is combined. In addition, each of the side plates 220 constituting the inner case 200 includes a plurality of suction holes 221 for guiding the air of the electrical equipment compartment 400 to the cooking chamber and a plurality of discharge holes through which the air of the cooking chamber 300 is discharged to the outside. (Not shown) is perforated in a diagonal direction, the outside air is sucked in accordance with the operation of the cooling fan 430 to be described later is discharged to the outside through the electrical equipment room 400 and the cooking chamber 300 in turn.

The electrical equipment room 400 includes a magnetron 410 radiating high frequency to the cooking chamber 300, a high pressure transformer 420, and a cooling fan disposed at a rear side of the electrical equipment room 400 so as to cool the electronic equipment by sucking outside air. 430, the lighting device 450 for illuminating the cooking chamber 300 through the suction hole 221 is built. Lamp 452 of the lighting device 450 is installed to be adjacent to the suction hole 221 formed in the inner side plate 200, the right side plate 220, that is, the right side plate 220, the mounting structure thereof with reference to FIG. In more detail,

First, the guide duct 440 is installed in the electrical equipment room 400 to surround the suction hole 221. The guide duct 440 is introduced into the electrical equipment room 400 by the cooling fan 430 and guides the air cooled by the magnetron 410 to be introduced into the cooking chamber 300 through the suction hole 221. A circular installation hole 441 for the installation of the lighting device 450 is formed on the surface, and the cylindrical guide member 442 is formed to extend a predetermined length above the installation hole 441.

And the lighting device 450 is composed of a lamp 452 made of a rectangle to have a predetermined length, the lamp 452 is coupled and the socket member 451, etc. to which external power is input, the lamp 452 is a mounting hole ( 441 is disposed in the guide duct 440, the socket member 451 is in contact with the top surface of the guide member 442 is prevented from falling into the guide duct 440. In order to fix the socket member 451, an outward flange 453 is formed which extends in both directions and is provided with fastening holes 454, respectively, and the outward flange 453 has an upper surface of the guide duct 440. It is firmly fixed through the fastening bar 443. The fastening bar 443 is provided to protrude upward from the upper surface of the guide duct 440 so as to penetrate through the fastening hole 454 from the bottom to the upper direction when the socket member 451 is coupled, the tip of the fastening rod 443 The locking piece 444 branched at an acute angle so that it has an elastic force is comprised above.

Therefore, when the socket member 451 to which the lamp 452 is coupled is inserted into the installation hole 441 of the guide duct 440 so that the end of the fastening rod 443 is inserted into the fastening hole 454, The lamp 452 is positioned inside the guide duct 440, and the socket member 451 is firmly coupled to the top of the guide duct 440 by the fastening rod 443. At this time, the end of the engaging piece 444 is elastically caught on the upper surface of the outward flange 453 of the socket member 451, so that the socket member 451 is not separated without applying an artificial force, Press 444 and lift the socket member 451 upward.

In addition, a wire line 460 connected to an external power source is connected to the socket member 451 having the lamp 452. The end portion of the wire line 460 facilitates electrical connection and provides an electric shock. The terminal housing 470 is provided to prevent it.

To this end, a pair of input terminals 455 spaced a predetermined distance from the upper portion of the soke member 451 is configured to protrude upwards, and when the terminal housing 470 is coupled, its front end is fitted to be coupled and flows. A rectangular coupling rib 456 wrapped around the input terminal 455 is provided to protrude so as to remain firm.

The terminal housing 470 is provided with a pair of connection holes 471 into which the input terminal 455 is fitted and electrically connected thereto. The pair of connection holes 471 are provided at the same interval as the separation distance of the input terminal 455, these are integrally configured through the plate-shaped reinforcing rib 472 injection molded. On the other hand, the opening 473 is formed in the longitudinal direction at the distal end of the reinforcing rib 472 so that the spacing of the connection hole 471 is variable by the elastic force of the terminal housing 470, which is an assembly line or a socket. In order to facilitate the coupling of the terminal housing 470 even in a state in which a gap of the input terminal 455 is slightly deformed due to a mistake in the production line of the member 451.

Accordingly, when the input terminal 455 is fitted and coupled to the terminal housing 470 through the connection hole 471, the wire wire 460 and the input terminal 455 connected to an external power source are electrically connected to the lamp 452. Can supply power. At this time, the front end portion of the terminal housing 470 is fitted into the coupling rib 456 to be prevented from flowing in the left and right directions, thereby maintaining a firmly coupled state. On the other hand, even if the interval between the input terminal 455 is deformed, as shown in Figure 6, the spacing of the connection hole 471 of the terminal housing 470 through the opening 473 of the reinforcing rib 472 is also variable through its own elastic force Because of this, the assembly thereof can be facilitated without replacing the socket member 451.

That is, when the interval between the input terminal 455 is slightly reduced, by slightly pressing both sides of the terminal housing 470 to insert the input terminal 455 is inserted into the connection hole 471 without difficulty, and in the opposite case coupled slightly open do.

Next will be described the operation of the microwave oven according to the present invention configured as described above.

First, when the control unit 320 is operated in a state in which a cooking object is placed in the cooking chamber 300 and the door 310 is closed, the cooling fan 430 is operated to cool external air, and the electric parts are cooled. The duct 440 and the suction hole 221 are guided to the cooking chamber 300. And the air of the cooking chamber 300 is discharged again through the discharge hole (not shown) to remove the humid air and cooking smell. In addition, the high frequency oscillated from the magnetron 410 is radiated into the cooking chamber 300 to perform cooking, and the lamp 452 of the lighting device 450 is turned on to illuminate the cooking chamber 300 through the suction hole 221. The user can see the cooking chamber 300 through the see-through portion 311 of the door 310.

On the other hand, since the illumination device 450 is installed through the upper surface of the guide duct 440, the guide duct 440 may be mounted in a state in which the guide duct 440 is mounted in the electrical equipment compartment 400. Therefore, when the lamp 452 reaches its end of life, the lamp 450 is disassembled from the guide duct 440 to replace the lamp 452. As described above, the locking piece 444 is pressed and the socket member 451 is lifted upward. Raise it easily. Then, after replacing the lamp 452 and assembling it in the reverse order, the lamp 452 is simply installed inside the guide duct 440. The socket member 451 is connected to the engaging piece 444 of the fastening rod 443. There is no fear that the guide duct 440 is firmly fastened to the upper side by the guide duct 440. Therefore, the lighting device 450, as well as easy to assemble, is firmly fastened, and workability is improved because only the lighting device 450 is disassembled in its after-sales service.

In addition, the lamp 452 of the lighting device 450 is electrically connected to the terminal housing 470 of the wire wire 460 is supplied with power, the input terminal 455 exposed to the outside from the socket member 451 is It is completely inserted and wrapped inside the terminal housing 470 to prevent an electric shock accident. That is, when the external case 110 is disassembled, there is a case of inspecting or repairing an electric component of the electronic component room 400. The input terminal 455 through which the current flows is connected to the connection hole 471 of the terminal housing 470. Since it is fully inserted into the inside, the body of the examiner is unintentionally prevented from touching, thereby preventing an electric shock. Even if the input terminal 455 is slightly deformed, the spacing of the connection holes 471 can be varied by the reinforcing ribs 472 having the openings 473, so that they can be easily electrically connected without having to replace the socket member 451. When the terminal housing 470 is coupled, the tip portion is seated in the coupling rib 456 so that the terminal housing 470 is more firmly assembled.

As described above in detail, the lamp power supply device of the microwave oven according to the present invention is provided in the socket member on which the lamp is mounted so as to illuminate the cooking chamber, and is input to the input terminal protruding upward and input to the end of the wire wire connected to the external power source. A pair of connection holes are provided so that the terminals are inserted and electrically connected to each other, and a terminal housing capable of elastically changing a predetermined width of the connection hole spacing is provided.

Therefore, the wire housing and the input terminal are more easily connected through the terminal housing where the connection hole is formed, and thus the power is supplied to the lamp. Even when the outer case is disassembled, the body part is prevented from coming into contact with the electrical connection part, thus preventing electric shock. . In addition, even when the spacing of the input terminals is slightly deformed, the spacing of the connection holes can be changed by a predetermined width, and there is an effect that the connection can be made more easily without replacing the socket members.

Claims (1)

An inner case 200 in which a cooking chamber 300 is formed therein and a suction hole 221 is formed in the side plate 220 to guide the inflow of air; An outer case 100 coupled to the inner case 200 at a predetermined interval to form an electrical equipment compartment 400 to be partitioned from the cooking chamber 300; A cooling fan 430 installed at the rear of the electrical equipment compartment 400 to cool the electrical components mounted in the electrical equipment compartment 400; A guide duct 440 guiding a part of the air sucked by the cooling fan 430 to the cooking chamber 300 through the suction hole 221; In the microwave oven having a socket member 451 is disposed in the guide duct 440, the lamp 452 is mounted to illuminate the cooking chamber 300 through the suction hole (221); A pair of input terminals 455 protruding a rod shape to the socket member 451 and spaced apart from each other to be connected to an external power source; A pair of connection holes 471 are provided at an end portion of a wire line connected to an external power source to supply power to the lamp 452 through the input terminal 455, and the input terminal 455 is inserted into and electrically connected thereto. A terminal housing 470 spaced apart from each other; The connection hole 471 of the terminal housing 470 is formed in a plate shape between the connection hole 471, even if the separation distance of the input terminal 455 is a predetermined width is easy to the connection hole 471. And a reinforcing rib 472 having an opening portion 473 formed at a lower end of the connecting hole 471 so as to elastically change a predetermined width so as to be connected to each other.

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