WO2019190034A1

WO2019190034A1 - Hood-combined microwave oven

Info

Publication number: WO2019190034A1
Application number: PCT/KR2019/000423
Authority: WO
Inventors: 김동우; 박기홍; 서정우; 전수환
Original assignee: 엘지전자 주식회사
Priority date: 2018-03-28
Filing date: 2019-01-10
Publication date: 2019-10-03
Also published as: KR102519488B1; KR20190113401A; CN211656431U

Abstract

The present invention relates to a hood-combined microwave oven and provides a structure comprising: a microwave oven body; a bottom casing disposed on the bottom of the microwave oven body; a first hood casing which is hingedly rotatable on and protrudes from the bottom casing; a second hood casing which is slidingly withdrawn forward from the bottom casing; a body-side frame fixed to the bottom casing; a hood-side arm fastened to the second hood casing and including a rail groove having a shape of letter 'ㄷ' open at a side thereof; and multiple rollers which are rotatably fixed to the body-side frame, received in the rail groove of the hood-side arm, and supported by and rotated on the upper surface or lower surface of the rail groove. This structure enables omission of conventional multi-level rails and can constantly maintain a uniform transverse interval between the second hood casing and the bottom casing.

Description

Hooded microwave oven

The present invention relates to a hood combined microwave oven having an improved hood takeout structure.

A microwave oven is a home appliance that cooks food using microwaves. A microwave oven having a hood function for discharging smoke and odor generated when cooking food in a microwave oven is called a hood-use microwave oven or an OTR () type microwave oven.

1 and 2 are views showing a general hood microwave oven.

Referring to FIG. 1, the hood-use microwave oven 1 is installed above another cooking appliance (for example, a gas oven). The microwave oven 1 is provided with hoods H1 and H2.

Hoods H1 and H2 are installed on the bottom of the microwave oven 1 and serve to suck air containing odors, pollutants, etc. generated during cooking of the food in the cooking apparatus. To this end, an inside of the microwave oven 1 is provided with a suction device for sucking air containing contaminants through the hoods H1 and H2.

In order to improve the exhaust performance of the hood, the second hood H2 disposed behind the microwave oven 1 is provided to protrude downward, and the first hood H1 moves forward of the microwave oven 1. It is provided in a form to be withdrawn.

The door 2 of the microwave oven 1 is opened and closed in a left-right rotational manner, and the first hood H1 is independently drawn out from the lower part of the door 2.

The second hood H2 is disposed in the second hood casing 3 which is pulled out by sliding, and is exposed to the bottom surface when the second hood casing 3 is pulled forward of the microwave oven body.

The second hood casing (3) is a drawer type pulled out from the bottom of the microwave oven, conventionally used a multi-stage rail used in general furniture.

3 is a perspective view illustrating a multi-stage rail for drawing out a second hood casing, and FIG. 4 is a cross-sectional view of a multi-stage rail for drawing out a second hood casing.

As shown in the figure, the main body side frame 30 fixed to the microwave oven main body side and the hood side arm 10 fixed to the second hood casing 3 are fixed to the multi-stage rail 20.

The multi-stage rail 20 has a structure in which a ball bearing 23 is inserted between the inner rail 22 and the outer rail 24.

However, the multi-stage rail 20 structure is generally applied to drawers of furniture, and has a disadvantage in that a large tolerance occurs in the left and right directions.

In addition, both the inner rail 22, the outer rail 24 and the ball bearing 23 of the multi-stage rail 20 had a heavy weight made of metal.

SUMMARY OF THE INVENTION An object of the present invention is to improve the take-out guide part of the second hood withdrawn from the microwave oven body in a microwave oven with a hood, and to reduce the left and right position deviation of the second hood casing withdrawn from the microwave oven body. In providing.

Another object of the present invention is to provide a structure that can be made smoothly with the draw-out operation of the second hood withdrawal from the microwave oven body in the microwave oven with hood.

Another object of the present invention is to reduce the total weight of the product by reducing the weight of the part for guiding the withdrawal of the second hood withdrawn from the microwave oven body in the hood combined microwave oven.

The present invention, the microwave main body; A bottom casing disposed on the bottom of the microwave oven body; A first hood casing hingedly protruding from the bottom casing; A second hood casing sliding forward from the bottom casing; A main body side frame fixed to the bottom casing; A hood side arm fastened to the second hood casing; And a plurality of rollers rotatably fixed to the main body side frame and supported on the hood side arm to rotate.

The hood side arm may have a rail groove for receiving the plurality of rollers, the rail groove may have a 'c' shape open to the side, and the roller may be supported on the upper or lower surface of the rail groove. .

The hood side arm further includes a spur gear that has a rack gear surface on an upper side and is fixed to the main body side frame to engage and rotate with the rack gear surface, wherein the spur gear has an elastic member, wherein the hood It is possible to provide an elastic force in the direction in which the hood side arm is drawn in a state in which the side arm is drawn into the main body side frame.

The roller may have a structure including a roller body having a cylindrical shape, a hollow shaft penetrating the roller body and coupled to the side plate of the main frame, and a fastening pin coupled to the hollow shaft.

On the other hand, the rollers are arranged in a zigzag up and down inside the rail groove, some of the rollers are supported on the upper surface of the rail groove, the remaining rollers may be supported on the lower surface of the rail groove.

The main body side frame has a pair of arrangement arranged on the outside, the hood side arm has a layout structure in which the pair is arranged inside the main body side frame,

The hood side arm may have a pair disposed outside, and the main body side frame may have an arrangement structure in which the pair is disposed inside the hood side arm.

In the microwave combined hood according to the present invention, in the structure in which the second hood casing slides out from the bottom casing of the microwave oven main body, the parts connecting the second hood casing and the bottom casing are improved, and the second hood casing and the bottom casing are improved. The effect is to keep the left and right spaces constant.

In addition, the hood combined microwave oven according to the present invention provides a structure in which the frame body fastened to the bottom casing and the hood side arm fastened to the second hood casing are moved by rolling a plurality of rollers, thereby eliminating the conventional multi-stage rail. Can be. Therefore, the number of parts can be reduced and the weight of the product can be reduced.

In addition, the hood combined microwave oven according to the present invention constrains the up and down flow of the second hood casing by the rail groove of the roller and the hood side arm, the spur meshing with the rack gear surface formed in the side direction provided in the hood side box By restraining the lateral flow of the second hood casing by the gears, it is possible to secure a stable sliding operation of the second hood casing and also to prevent the second hood casing from appearing to one side.

1 is a view showing a general hood microwave oven.

FIG. 2 is a view illustrating a hood withdrawal state of a general microwave oven. FIG.

3 is a perspective view illustrating a multi-stage rail for drawing out a second hood casing;

4 is a cross-sectional view showing a multi-stage rail for the second hood casing inlet shaft;

5 is a view showing a structure for the withdrawal of the second hood casing of the microwave oven with hood according to an embodiment of the present invention.

FIG. 6 is a view illustrating a separated state of parts for drawing in and out of a second hood casing of a microwave oven according to an embodiment of the present invention.

Figure 7 is a side view showing a structure for the withdrawal of the second hood casing of the hood combined microwave oven according to an embodiment of the present invention.

8 is a cross-sectional view showing a coupling state of the roller portion of the microwave oven with a hood according to an embodiment of the present invention.

9 is a view showing a separation state of the bottom casing and the second hood casing of the microwave oven with hood according to an embodiment of the present invention.

10 is a view showing the assembly of the bottom casing and the second hood casing of the microwave oven with a hood according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving the same will be apparent with reference to the following embodiments. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms. The present embodiments are merely provided to make the disclosure of the present invention complete, and to fully convey the scope of the invention to those skilled in the art, and the present invention is defined by the scope of the claims. It will be. Like reference numerals refer to like elements throughout.

In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. In the drawings, the thicknesses of layers and regions are exaggerated for clarity.

In addition, in this specification, when a part such as a layer, film, region, plate, etc. is said to be "on" or "upper" another part, it is not only when the other part is "directly over" but also another part in the middle. Also includes. On the contrary, when a part is "just above" another part, there is no other part in the middle. In addition, when a part such as a layer, a film, an area, or a plate is "below" or "below" another part, it is not only when the part is "below" but also another part in the middle. Include. In contrast, when a part is "just below" another part, there is no other part in the middle.

The following presents specific embodiments of the present invention. However, the embodiments described below are merely for illustrating or explaining the present invention in detail, and thus the present invention is not limited thereto.

FIG. 5 is a view illustrating a structure for drawing out and extracting a second hood casing of a combined microwave oven according to an embodiment of the present invention, and FIG. 6 is a view of a second hood casing of a combined microwave oven according to an embodiment of the present invention. FIG. 7 is a view illustrating a separated state of parts for drawing in and out, and FIG. 7 is a side view illustrating a structure for taking in and taking out a second hood casing of a microwave oven according to the present invention.

As shown, the hood combined microwave oven according to the embodiment of the present invention is a hood side arm 110 fixed to the second hood casing (3 in Figure 2), and the main body side frame fixed to the bottom of the microwave oven body ( 120 has a structure that is directly connected.

This structure can eliminate the multi-stage rail parts that have been conventionally applied. Therefore, the weight corresponding to the metal multi-stage rail can be reduced.

In addition, it is possible to improve the occurrence of position errors in the left and right directions, which are the limits of the multi-stage rail parts.

The hood combined microwave oven according to the present invention has a structure in which the hood side arm 110 connected to the second hood casing and the main body side frame 120 fixed to the bottom of the microwave oven body are directly slid by the roller 130. to be.

The body-side frame 120 is disposed side by side on both sides of the microwave oven body. At this time, the interval between the main body side frame 120 preferably corresponds to the width of the second hood casing 3 so that the second hood casing 3 can be disposed between the main body side frame 120.

Body-side frame 120 The hood-side arm 110 is coupled in the form of being inserted into the body-side frame 120.

In other words, the hood side arm 110 is coupled to the main body side frame 120 by pushing the second hood casing 3 onto the bottom of the microwave oven main body.

The hood side arm 110 is fastened and fixed to the second hood casing. The hood side arm 110 has a long rod shape and has a 'c' shaped rail groove 112 open outward.

The rail groove 112 is accommodated in the roller 130 fixed to the main body side frame 120, the roller 130 is to rotate the upper or lower surface of the rail groove 112 to the cloud surface.

The rack gear part 111 is provided at an upper portion of the main body side of the hood side arm 110. The rack gear part 111 is disposed above the hood side arm 110 읜, and is formed in the longitudinal direction from an end portion of the microwave oven body to a central portion thereof.

The rack gear 111 has a rack gear surface 114 is formed on the side. At this time, the rack gear surface 114 is formed on the side facing outward.

The spur gear 140 fixed to the main body side frame 120 disposed outside the hood side arm 110 can support the side direction of the hood side arm 110.

This is because the roller 130 is restrained by the rail groove 112 to restrain the vertical movement of the hood casing, and the spur gear 140 restrains the movement of the hood side arm 110 in the outward direction. It is for suppressing the flow of up, down, left and right with respect to the main body.

In the conventional structure of FIGS. 3 and 4, the spur gear 40 has a structure supporting the upper surface of the hood side arm 10, so that it is difficult to limit the left and right play of the hood casing.

On the other hand, in the embodiment of the present invention by setting the rotation axis of the spur gear 140 in the longitudinal direction, by forming the outer side of the hood side arm 110, the rack gear surface 114 supported by the spur gear 140, It provides a structure that can suppress the lateral flow of the hood casing to the spur gear 140 and the rack gear surface (144).

As described above, the body-side frame 120 is fixed to both sides of the bottom surface of the microwave oven body, and the hood-side arm 110 is inserted into the inside thereof, which is coupled to both sides of the hood-side arm 110. Since the outer surface is engaged with the spur gear 140, the hood casing can be prevented from flowing left and right.

The spur gear 140 allows the elastic force to be stored when the hood side arm 110 is retracted, so that the hood side arm 110 is the bottom surface of the body when the latch is unlocked while the hood casing is stored in the bottom of the body. It also serves to provide elastic force in the direction of drawing out.

At this time, the elastic force may be stored in the spur gear 140 through the torsion spring.

The main body side frame 120 is connected to the bottom plate 123 and the bottom plate 123 formed in parallel with the bottom surface of the main body and formed in the longitudinal direction, and parallel to the bottom plate in the side plate 121. And bent top plate 122. At this time, the upper plate 122 is preferably bent in the outer direction of the side plate 121. This is for allowing the spur gear 140 to be fastened to the upper plate 122.

The bottom plate 123 is fastened to the microwave oven body.

The roller 130 is rotatably coupled to the body side frame 120. The roller 130 penetrates through the roller body 131 having a cylindrical shape, the hollow shaft 132 inserted from one side of the roller body 131, and the side plate 121 of the body side frame 120. The coupling pin 133 is inserted into the shaft 132.

Since the outer circumferential surface of the roller body 131 should rotate in friction with the upper surface or the lower surface of the rail groove 112, it is preferable to increase the friction force by giving the surface a roughness. If the outer circumferential surface of the roller body 131 is slipped without rubbing against the rail groove 112, noise may occur and a draw in and out of the hood casing may not be smoothly performed.

The roller 130 is composed of three parts of the roller body 131, the hollow shaft 132 and the coupling pin 133, the roller body 131 is a structure that is supported on the hollow shaft 132, the hollow shaft 132 and the coupling pin 133 is coupled to both sides of the side plate 121 of the main body side frame 120.

As shown, the roller 130 includes a roller body 131, a hollow shaft 132, and a coupling pin 133.

The hollow shaft 132 is inserted through the roller body 131, and the hollow shaft 132 is configured to be fitted to the end side plate 121. This is to allow the roller body 131 to be coupled to the side plate 121 by the hollow shaft 132 before the coupling pin 133 is fastened.

In addition, in the state in which the hollow shaft 132 is fitted to the side plate 121, by coupling the coupling pin 133 to the hollow shaft by interference fit or cogging, it can be firmly fixed to the roller body 131.

The roller body 131 is disposed to friction with one surface of the upper or lower surface of the rail groove 112. In other words, the height of the rail groove 112 is set larger than the outer diameter of the roller main body 131.

In order for the roller 130 to make a stable rolling motion inside the rail groove 112, some of the roller 130 is rubbed on the upper surface of the rail groove 112, the other roller 130 is rail rail 112 ) Can be rubbed on the lower surface. To this end, the roller 130 may be arranged in a zigzag in the vertical direction on the main body side frame 120.

FIG. 9 is a view illustrating a separation state of the bottom casing 100 and the second hood casing 200 of the combined microwave oven according to the embodiment of the present invention, and FIG. 10 is a view of the combined microwave oven according to the embodiment of the present invention. 2 shows the assembly of the bottom casing 100 and the second hood casing 200.

As shown in the drawing, after fastening the main body side frame 120 to the bottom casing 100, the second hood casing 200 may be assembled to the hood side arm 110.

Of course, while the hood side arm 110 is fastened to the second hood casing 200, the hood side arm 110 may be assembled by pushing the hood side arm 110 into the main body side frame 120 fastened to the bottom casing 100. have.

In the illustrated embodiment, the main body side frame 120 is disposed inside, and the hood side arm 110 is disposed outside, but as described above, the main body side frame 120 is disposed outside, and the hood side arm is disposed. 110 may be disposed inside.

What has been described above is only embodiments for carrying out the hood combined microwave oven according to the present invention, the present invention is not limited to the above embodiments, and as claimed in the following claims do not depart from the gist of the present invention Anyone with ordinary knowledge in the field to which the present invention pertains will have the technical idea of the present invention to the extent that various modifications can be made therein.

Claims

Microwave oven body;

A bottom casing disposed on the bottom of the microwave oven body;

A first hood casing hingedly protruding from the bottom casing;

A second hood casing sliding forward from the bottom casing;

A main body side frame fixed to the bottom casing;

A hood side arm fastened to the second hood casing; And

And a plurality of rollers rotatably fixed to the main body side frame and supported by the hood side arm to rotate.
The method of claim 1,

The hood side arm is

Hooded microwave oven having a rail groove for receiving the plurality of rollers.
The method of claim 2,

The rail groove has a 'c' shape opened to the side,

The roller is a hood combined microwave oven is supported on the upper or lower surface of the rail groove.
The method of claim 1,

The hood side arm has a rack gear surface on its upper side,

And a spur gear that is fixed to the frame on the body side and meshes with the rack gear surface and rotates.
The method of claim 4, wherein

The spur gear

And an elastic member, wherein the hood side arm provides elastic force in a direction in which the hood side arm is drawn out while the hood side arm is inserted into the main body side frame.
The method of claim 1,

The roller is

The roller body having a cylindrical shape,

A hollow shaft penetrating the roller body and coupled to the side plate of the body-side frame;

Combined microwave oven including a fastening pin coupled to the hollow shaft.
The method of claim 3, wherein

The roller is arranged in a zigzag up and down inside the rail groove,

And some rollers are supported on the upper surface of the rail groove, and the other rollers are supported on the lower surface of the rail groove.
The method of claim 1,

The main frame on the body side is arranged in a pair outside,

A hood-use microwave oven, wherein the hood side arm is a pair disposed inside the main body side frame.
The method of claim 1,

The hood side arm is disposed in a pair outside,

A hood-use microwave oven, wherein the main body side frame is a pair disposed inside the hood side arm.
Microwave oven body;

A bottom casing disposed on the bottom of the microwave oven body;

A first hood casing hingedly protruding from the bottom casing;

A second hood casing sliding forward from the bottom casing;

A main body side frame fixed to the bottom casing;

A hood side arm fastened to the second hood casing and having a 'c' shaped rail groove open to the side; And

And a plurality of rollers rotatably fixed to the main body side frame and accommodated in the rail groove of the hood side arm and supported on the upper or lower surface of the rail groove and rotate.
The method of claim 10,

The hood side arm has a rack gear surface on the side of the upper portion,

And a spur gear that is fixed to the frame on the body side and meshes with the rack gear surface and rotates.
The method of claim 11,

The main body side frame

A bottom plate fastened to the bottom casing, a side plate bent from the bottom plate, and an upper plate bent from the side plate,

The spur gear is a hood combined microwave is coupled to the top plate.