KR19980074660A - microwave - Google Patents

Abstract

The present invention relates to a microwave oven, and an object thereof is to install a terminal housing on a wire wire coupled to an input terminal of a lighting device to supply power, thereby facilitating their coupling, and preventing an electric shock accident.

Microwave according to the present invention is provided with an input terminal 455 to protrude upward in the socket member 451 of the lighting device 450 for illuminating the cooking chamber 200, the input terminal 455 is inserted and electrically The terminal housing 470 to be connected was provided at the end of the wire wire 460 connected to the external power source. Therefore, the wire housing 460 and the input terminal 455 are easily connected by the terminal housing 470, and the body part is prevented from coming into contact with the electrical connection part while the outer case 11 is disassembled. There is an advantage that can be prevented.

Description

microwave

The present invention relates to a microwave oven, and more particularly, to a lighting device installed in the guide duct of the electrical equipment room for illuminating the cooking chamber.

In general, a microwave oven is a device that cooks food by frictional heat between molecules by radiating a high frequency of 2450 MHz fundamental wave in a magnetron into a cooking chamber and repeatedly converting a molecular arrangement of moisture contained in the food.

As illustrated in FIG. 1, the microwave oven having such a function is formed such that the cooking chamber 20 and the electrical equipment compartment 40 are partitioned inside the main body housing 10, and the main body housing 10 is the cooking chamber 20. The inner case 12 is formed with an outer case 11 forming the appearance. In front of the inner case 12, the door 30 is rotatably coupled to open and close the cooking chamber 20, and the display unit and the control unit 31 provided with a plurality of operation buttons are coupled. The outer case 11 is bent in a U-shape to form a top plate and both side plates, the front and rear ends thereof are coupled to the front plate and the rear plate of the inner case 12 to form an outer body of the microwave oven.

The space formed between the right side plate portion of the inner case 12 and the outer case 11 is an electrical equipment compartment 40 in which various electronic equipments are built, and includes a magnetron 41 and a magnetron that generate high frequency radiation to the cooking chamber 20. A high voltage transformer 42 for applying a high voltage to the 41 and a cooling fan 43 for cooling the electric parts that generate heat are provided.

In addition, both side plates forming the inner case 12 are provided with a plurality of suction holes 20a through which the cooking chamber 20 and the electrical equipment compartment 40 communicate with each other, and discharge holes (not shown) communicating with the outside, respectively. A guide duct 44 for guiding the air of the electrical equipment compartment 40 to the cooking chamber 20 through the suction hole 20a is installed at the side of the electrical equipment compartment 40 of the right plate on which the 20a is formed. In addition, the duct 44 is provided with a lighting device 45 to correspond to the suction hole (20a) is configured to illuminate the cooking chamber 20 during the cooking administration, its structure in more detail with reference to FIG. The explanation is as follows.

First, the lighting device 45 is composed of a socket member (45a) is coupled to the socket member 45a, the socket member 45a, the power supply is input and the engaging jaw (45c) is formed on the upper end of the guide duct 44 The upper surface portion is formed with a fastening groove 44a extending to a predetermined length so as to be connected to the outside. Therefore, when the body of the socket member 45a is inserted and pushed inward through the opening of the fastening groove 44a, the locking jaw 45c is caught by the outer side of the upper surface of the guide duct 44, so that the lighting device 45 Departure is prevented. On the other hand, the upper portion of the socket member 45a is configured such that a pair of input terminals 45d are exposed to the outside, and the tip ends of the wire wires 46 are respectively connected to the welding means to supply power to the input terminals 45d. It is joined by.

In the microwave oven configured as described above, the high frequency generated from the magnetron 41 is radiated to the cooking chamber 20 to cook the cooked object, and the outside air is sucked in accordance with the operation of the cooling fan 43, thereby The electric parts are cooled and guided and circulated to the cooking chamber 20 through the guide duct 44 and the plurality of suction holes 20a to remove cooking odors and wet air. In addition, the lighting device 45 is turned on to illuminate the cooking chamber 20 through the suction hole 20a, so that the user can see the cooking state of the cooking object.

However, since the lighting device 45 of the microwave oven is simply inserted into the coupling groove 44a formed to be connected to the outside from the lateral direction, it is not firmly fastened to generate a rattling noise, and the socket member 45a during the movement. ), The lamp 45b may come off. In addition, the input terminal 45d is joined to the front end of the wire 46 by welding means, and such a joining part is exposed to the outside, which may cause an electric shock accident. That is, while the inspector or the serviceman disassembles the outer case 11, the body part may accidentally come into contact with the junction of the input terminal 45d through which current flows, causing an electric shock accident. This is also a violation of the safety regulations (new UL regulations).

The present invention is to solve this problem, an object of the present invention is to provide an input terminal so as to protrude upward in the socket member of the lighting device for illuminating the cooking chamber, the input terminal is inserted into the outer terminal housing is electrically connected By providing at the end of the wire wire connected to the power supply, it is easy to connect the wire wire to the input terminal by using the terminal housing, and to prevent electric shock by preventing the body part from contacting the electrical connection part while disassembling the outer case. It is to provide a microwave.

1 is an exploded perspective view showing the overall structure of a typical microwave oven.

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

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

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

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

* Description of symbols on the main parts of the drawings *

100. Body housing 110. Outer case 120. Inner case

200. Cooking room 400. Electrical appliance room 410. Magnetron

440. Guide duct 450 Lighting device 451 Socket member

452. Lamp 453. Outward flange 454. Fastener

455 .. Input terminal 460. Wire cable 470. Terminal housing

471.

In order to achieve the above object, the present invention provides a microwave oven including a main body housing in which a cooking chamber is formed inside and a lighting device including a lamp and a socket member to illuminate the cooking chamber. A terminal is provided, and a terminal housing to which an input terminal is inserted and coupled is provided at the front end of the wire wire connected to the external power source.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. Figure 3 is an exploded perspective view showing 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 showing the terminal housing showing the structure of the lighting apparatus according to the present invention.

As shown in the microwave oven according to the present invention, the cooking chamber 200 and the electrical equipment compartment 400 is formed in the interior of the main body housing 100, the main body housing 100 is a so-called open cooking chamber 200 The inner case 120 to form a), coupled to the edge portion of the inner case 120 forms a full-length compartment 400 to be partitioned from the cooking chamber 200 and is distinguished into an outer case 110 forming an appearance. The front part of the main body housing 100 includes a door 300 that opens and closes the cooking chamber 200, and a control unit 310 provided with an operation button and a display unit to operate the microwave oven. In addition, each of the side plates forming the inner case 120 has a plurality of suction holes 210 for guiding the air of the electrical equipment compartment 400 to the cooking chamber 200 and a plurality of discharge holes through which the air of the cooking chamber 200 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 again through the electrical equipment compartment 400 and the cooking chamber 200 in turn.

In addition, the electrical equipment room 400 includes a magnetron 410 radiating high frequency to the cooking chamber 200, a high pressure transformer 420, and a cooling fan 430 and a suction hole 210 for cooling the electrical equipment by sucking external air. An illumination device 450 for illuminating the cooking chamber 200 is installed. At this time, the lamp 452 of the lighting device 450 is positioned to be adjacent to the suction hole 210 formed on the right side plate, that is, the right side plate of the inner case 120, the structure thereof will be described in more detail as follows. .

First, the guide duct 440 is installed in the electrical equipment room 400 to surround the suction hole 210, and the guide duct 440 is introduced into the electrical equipment room 400 by the cooling fan 430, and the magnetron 410. It guides the cooled air to be introduced into the cooking chamber 200 through the suction hole 210, the upper surface of the circular installation hole 441 for the installation of the lighting device 450 is formed, the installation hole The normal guide member 442 extends a predetermined length above the 441. And the lighting device 450 is composed of a lamp 452 extending to a predetermined length, the lamp 452 is coupled to the socket member 451 to which the external power is input, the lamp 452 is a mounting hole 441 Located through the guide duct 440, the socket member 451 is in contact with the top surface of the guide member 442 is prevented from being separated into the guide duct 440. To explain in more detail, the socket member 451 is configured with outward flanges 453 extending to both sides, the outward flanges 453 is the upper surface and the fastening members (454,443) of the guide duct (440) It is firmly fixed and fastened using. That is, the fastening members 454 and 443 protrude upward from the upper surfaces of the fastening holes 454 and the guide ducts 440 formed in the outward flanges 453, respectively, and the fastening bars 443 inserted into the fastening holes 454. Consists of Accordingly, when the lighting device 450 is inserted through the installation hole 441 at the upper portion of the guide duct 440 such that the tip of the fastening rod 443 is inserted into the fastening hole 454, the lamp 452 is the guide duct 440. Located inside, the socket member 451 is firmly coupled to the outside of the guide duct 440 by fastening members 454 and 443. At this time, a locking piece 444 branched at an acute angle is formed at the distal end of the fastening rod 443, so that an end portion is caught on the upper surface of the outward flange 453 when the coupling bar 443 is detached without an artificial force. In the case of separation, it is simply disassembled by pressing the locking piece 444 and lifting the socket member 451 upward.

In addition, a terminal housing 470 is provided at an end portion of the wire wire 460 that is connected to an external power source and supplies power to the socket member 451 to facilitate connection thereof. First, a pair of input terminals 455 protruding in the form of rods are spaced apart from the upper portion of the socket member 451 by a predetermined distance to the outer upper portion, and such an input terminal 455 is inserted into one end of the terminal housing 470. A pair of connection holes 471 are electrically connected to each other, and the gaps thereof are formed to be equal to the gap between the input terminals 455. Therefore, when the terminal housing 470 of the wire line 460 connected to the external power source and the input terminal 455 protruding to the upper portion of the socket member 451 are combined, the input terminal 455 is moved into the terminal housing 470. Inserted and not exposed.

On the other hand, as shown in Figure 5, one end of the terminal housing 470 is branched so that the interval of the connection hole 471 can be varied by a predetermined interval, which is accidentally in the assembly line or the production line of the socket member 451. Due to this, even if a slight variation in the interval between the input terminal 455 is to facilitate the coupling. That is, when the interval of the input terminal 455 is slightly reduced, since the interval of the connection hole 471 of the terminal housing 470 is also variable, it is easily connected by inserting and combining the input terminal 455 by slightly pressing both sides. In case of joining slightly open.

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

First, when the control unit 310 is operated in a state in which a cooking object is placed in the cooking chamber 200 and the door 300 is closed, the cooling fan 430 is operated to cool the external air inflowing electric parts, and to continuously guide the control unit 310. The duct 440 and the suction hole 210 guide the cooking chamber 200. And the air of the cooking chamber 200 is discharged again through the discharge hole (not shown) to remove the humid air and cooking smell thereof. In addition, the high frequency oscillated from the magnetron 410 is radiated to the cooking chamber 200 to perform cooking, and the lamp 452 of the lighting apparatus 450 is turned on to illuminate the cooking chamber 200 through the suction hole 210. The user can see the cooking chamber 200.

On the other hand, since the lighting device 450 is installed through the upper surface of the guide duct 440, the guide duct 440 may be installed in a state in which the electronic duct 400 is mounted. And it 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 completely inserted into the terminal housing 470 is wrapped There is no possibility of an electric shock accident. In other words, while disassembling the outer case 110 and inspecting or repairing the electrical components of the electrical equipment room 400 while power is being supplied, the input terminal 455 through which the current flows is connected to the terminal housing 470. (471) Because it is fully inserted inside, the body of the examiner can be prevented from touching unconsciously, which can prevent an electric shock accident.

In addition, even if the interval between the input terminal 455 slightly changes, as described above, one end of the terminal housing 470 is branched, so that the interval of the connection hole 471 can also be varied, so that these can be easily electrically connected.

As described in detail above, the microwave oven according to the present invention includes an input terminal to protrude upward in the socket member of the lighting apparatus for illuminating the cooking chamber, and an input terminal is inserted into the terminal housing electrically connected to an external power source. It provided in the edge part of the wire wire connected. Accordingly, the terminal housing facilitates the connection between the wire and the input terminal, and the body part is prevented from coming into contact with the electrical connection part in the state where the outer case is disassembled, thereby preventing an electric shock accident.

Claims (3)

In a microwave oven having a main body housing having a cooking chamber therein, and a lighting device including a lamp and a socket member to illuminate the cooking chamber, the socket member 451 has an input terminal 455 protruding to the outside to receive power. And a terminal housing 470 to which the input terminal 455 is inserted and coupled to a front end portion of the wire line 460 connected to an external power source. The method of claim 1, wherein the input terminal 455 is provided as a pair of rods spaced at a predetermined interval, a pair of the input terminal 455 is connected to one end of the terminal housing 470 to be coupled and connected Microwave oven characterized in that the connection hole 471 is provided. The microwave oven according to claim 2, wherein one end of the terminal housing (470) is branched so that the interval of the connection hole (471) is variable at a predetermined interval.