KR20060062232A - Installation structure of case in microwave oven - Google Patents

Abstract

The present invention relates to a case mounting structure of a microwave oven, the assembly structure of which is firmly maintained, wherein the upper case and the lower case are combined to form an outer case, wherein the upper case is a lower end in contact with the lower case A locking jaw bent and extended to surround the lower case is formed at an edge thereof, and at least one hook is formed at an end surface of the locking jaw, and the lower case has a stepped portion at which the locking jaw is seated. The stepped portion is formed by a locking groove to which the locking ring is inserted and fixed so that the locking step is in close contact with the stepped portion, so that the locking step can be tightly assembled to the stepped portion.

Microwave Oven, Upper Case, Hanging Jaw, Hanging Hook, Lower Case, Step, Hanging Groove

Description

INSTALLATION STRUCTURE OF CASE IN MICROWAVE OVEN}

1 is an exploded perspective view showing a microwave oven having a conventional structure;

2 is a cross-sectional view partially showing a case mounting structure of the microwave oven;

Figure 3 is an exploded perspective view showing an exploded microwave oven having a case mounting structure which is an embodiment of the present invention,

4 is a partial perspective view schematically showing the case mounting structure shown in FIG. 3;

5 is a cross-sectional view showing the case mounting structure shown in FIG. 4 in the longitudinal direction;

FIG. 6 is a cross-sectional view of the case mounting structure illustrated in FIG. 4 in cross section.

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

120: outer case 121: upper case

125: lower case 123: locking jaw

124: hook 126: step

126a: vertical step surface 126b: horizontal step surface

126c: support surface 127: support protrusion                 

128: hanging groove

The present invention relates to a case mounting structure of a microwave oven, and more particularly, to a case mounting structure of a microwave oven that can be firmly assembled while preventing noise caused by fine vibration by improving the mounting structure of the outer case. will be.

A common microwave oven is a kitchen appliance that heats the inside and the outside of the microwave by irradiating the microwaves with microwaves at the same time, significantly reducing the cooking time due to high thermal efficiency, and loss of nutritional value during cooking, thawing and warming of the food. It is also widely used because of the advantages such as cooking food directly stored in the container.

1 is an exploded perspective view illustrating a microwave oven having a conventional structure, and FIG. 2 is a cross-sectional view partially illustrating a case mounting structure of the microwave oven, and as illustrated, the cooking chamber 11 in which the microwave is cooked is shown. The provided cavity 10 and the outer case 20 surrounding the cavity 10, one side of the cavity 10, a magnetron 31, a high voltage generator 32, and a blowing fan ( 33 is provided with an electrical equipment compartment 12 on which electronic components such as 33) are mounted.

The cavity 10 includes a front plate 13 having an opening 13a communicating with the cooking chamber 11, a rear plate 14 covering the rear surfaces of the cooking chamber 11 and the electric chamber 12, The upper plate 15 constituting the upper side of the cooking chamber 11, and the lower plate 16 is bent and mounted to form the bottom surface and both sides of the cooking chamber 11. Each of the corners of the front plate 13 is formed with an insertion piece 13b extending and bent at a right angle toward the rear plate 14 in the mounting direction.

The outer case 20 is the upper case 21 and the upper case 21 having both sides bent in a direction orthogonal to the upper side and the lower side coupled to the lower end of both sides of the upper case 21 to form an outer It consists of a case 25. An elastic bending portion 22 is formed at the front end edge of the upper case 21 in contact with the front plate 13 so as to be bent inwardly so that the insertion piece 13b is inserted into and fixed to the lower case 25. The lower end corner 25 of the upper case 21 is formed with a bending jaw 23 that is bent and extended to surround the lower case 25, and the lower case 25 that contacts the locking jaw 23 of the upper case 21. Both side end edges of the support surface 26 is bent in a direction perpendicular to the inner surface of the upper case 21 is formed.

In addition, the front surface of the front plate 13, the door 31 coupled to be rotatably coupled to open and close the cooking chamber 13, and the controller to cover the front of the electric compartment 12 and a plurality of operation buttons formed 32 is mounted.

The upper case 21 configured as described above is slid in the front direction from the rear of the microwave oven, so that the insertion piece 13b is fitted and fixed to the elastic bending portion 22, and then bolts to the rear plate 14. It is fastened to be fixed to, between the support surface 26 and the inner surface of the upper case 21 is inserted into the dustproof member 27 to prevent vibration caused by vibration.

However, the microwave oven having the conventional structure configured as described above has an inner surface of the upper case 21 and the upper case 21 and the lower case 25 that are coupled to each other, constituting the outer case 20. Even when a gap is generated between the support surfaces 26 and the dustproof member 27 is mounted therebetween, a long time of use causes a gap between the gaps, which causes noise to be generated due to vibration.

In addition, when the use time is long, the locking jaw 23 is not in close contact with the lower case 25, a gap is generated, and foreign matter is inserted into the gap during use, or at the edge of the locking jaw 23 protruding during transport. There is a risk of injury to the user.

The object of the present invention devised in view of the above point is to improve the coupling structure of the upper case and the lower case of the microwave oven to be assembled so that the upper case and the lower case is in close contact, to reduce the noise caused by vibration It is to provide a case mounting structure of the stove.

In the microwave oven case mounting structure for achieving the object of the present invention as described above, the upper case and the lower case is coupled to form an outer case, the upper case is the lower end in contact with the lower end of the lower case A locking jaw bent and extended to surround the case is formed, and at least one hook is formed at an end surface of the locking jaw, and the lower case has a stepped portion on which the locking jaw is seated, and the stepped portion is A locking groove is formed to which the locking ring is inserted and fixed so that the locking jaw is in close contact with the stepped portion.

In addition, the locking ring protrusion protruding from the end surface of the locking jaw; And a latching portion extending from the protrusion at a right angle toward the front end of the microwave oven, the hooking portion being inclined toward one side toward the locking jaw so that the locking jaw is in close contact with the stepped portion, and the stepped portion is in contact with the upper case. A vertical step surface bent in a direction perpendicular to an edge and formed with the locking groove; A horizontal step surface bent in a direction perpendicular to the vertical step surface to be in close contact with the locking step; And a support surface bent in a direction perpendicular to the vertical step surface to be in close contact with the inner surface of the upper case.

It is configured as described above to close the locking jaw of the upper case to the attached portion of the lower case to reduce the noise caused by the vibration and at the same time to prevent the gap between the upper case and the lower case.

Hereinafter, a case mounting structure of a microwave oven, which is a preferred embodiment of the present invention, will be described in detail with reference to the accompanying drawings. Hereinafter, the same parts as in the conventional structure will be described with the same reference numerals.

Figure 3 is an exploded perspective view showing an exploded microwave oven having a case mounting structure which is an embodiment of the present invention, Figure 4 is a partial perspective view schematically showing the case mounting structure shown in Figure 3, Figure 5 Figure 4 6 is a cross-sectional view showing the case mounting structure shown in the longitudinal direction, Figure 6 is a cross-sectional view showing the case mounting structure shown in Figure 4 in the transverse direction, a preferred embodiment of the present invention as shown The microwave oven having a case mounting structure includes a cavity 10 including a cooking chamber 11 where cooking is performed, and an outer case 120 surrounding the cavity 10, and a magnetron at one side of the cavity 10. An electrical equipment chamber 12 to which electronic components such as 31, a high voltage generator 32, and a blower fan 33 are mounted is provided.

The outer case 120 has an upper case 121 forming an outer side and an upper case 121 forming both sides bent at right angles to the upper side, and a lower case coupled to a lower end of the upper case 121 to form an outline. 125). An elastic bending portion 122 is formed at the front end edge of the upper case 121 in contact with the front plate 13 to be bent inwardly so that the insertion piece 13b is fitted into and fixed to the lower case 125. The lower end corner of the upper case 121 is bent and extended to form a locking step 123 to surround the lower case 125, a plurality of hooks 124 is formed on the end surface of the locking step 123. do. The hook 124 is a hook 124a protruding from an end surface of the hooking jaw 123 and a hook extending at right angles from the protrusion 124a toward the front plate 13 mounting direction, which is a front end of the microwave oven. A portion 124b is formed, and one side surface of the locking portion 124b facing the locking jaw 123 includes an inclined surface 124c inclined at a predetermined angle.

Stepped portions 126 on which the locking jaw 123 is seated are formed at both end edges of the lower case 125 in contact with the locking jaw 123 of the upper case 121. The stepped portion 126 is bent at a right angle toward the upper plate 15 mounting direction at the corner of the side portion in contact with the locking jaw 123 of the upper case 121, and the locking ring at a position corresponding to the locking ring 124. A vertical step surface 126a having a locking groove 128 formed therein so that the 124 can be inserted therein, and a horizontal step surface 126b that is bent and extended at an angle toward the outside from the end surface of the vertical step surface 126a. And a support surface 126c that is bent at a right angle toward the upper plate 15 in the mounting direction from the end surface of the horizontal step surface 126b to be in contact with the inner surface of the upper case 21. In addition, the locking groove 128 is formed with an inclined surface 128a for sliding the locking protrusion 124 and pushing upwards such that the locking step 123 is in close contact with the horizontal step surface 126b. A plurality of support protrusions 127 are formed on the surface 126c so that the coupling force is concentrated on the support protrusion 127 so that the support surface 126c is in close contact with the inner surface of the upper case 121.

Microwave having a case mounting structure of a preferred embodiment of the present invention configured as described above cover the upper case 121 on the outer peripheral surface of the cavity 10 and the locking ring 124 in the locking groove 128 in the state When the upper case 121 is slid in the front direction from the rear of the microwave oven, the insertion piece 13b is fitted into the elastic bent portion 122 and fixed, and the locking ring 124 fitted into the locking groove 128 is also fixed. Sliding in the front direction from the back, at this time, the locking ring 124 is moved along the inclined surface (128a) of the locking groove 128 is applied a force so that the locking step 123 is in close contact with the horizontal step surface (126b) The inclined surface 124c formed on the locking portion 124b of the locking ring 124 is moved along the vertical step surface 126a so that a force is applied such that the locking step 123 is in close contact with the vertical step surface 126a. . In addition, the plurality of support protrusions 127 formed on the support surface 9926c are in close contact with the inner surface of the upper case 121 so that the force is intensively fixed, thereby being firmly fixed.

As described above, the upper end 121 is attached to the locking step 123 in close contact with the vertical step surface 126a and the horizontal step surface 126b, and the insertion piece 13b is fitted in the elastic bent portion 122. The bolts are fixed to the rear plate 14 by fixing.

As described above, in the case mounting structure of the microwave oven according to the preferred embodiment of the present invention, the hook ring 124 is formed on the hooking jaw 123 of the upper case 121, and the hooking jaw 123 is formed on the lower case 125. By forming the stepped portion 126 to be seated and at the same time forming the locking groove 128 to which the locking ring 124 is fitted and fixed, the locking jaw 123 is in close contact with the stepped portion 126 to generate a gap. It is possible to prevent the vibration and to reduce vibration and noise caused by vibration.

As described above, the case mounting structure of the microwave oven according to the present invention forms a catching hook on the catching jaw of the upper case, and forms a stepped portion on which the catching jaw is seated on the lower case coupled to the upper case. The locking ring is formed to lock the locking groove is fixed, the locking ring is inserted into the locking groove and slide, and the locking step is in close contact with the stepped portion to prevent the occurrence of gap, vibration and noise caused by vibration is reduced to the product There is an effect of improving the consumer's confidence in.

In addition, the locking ring is composed of a rigid assembly structure that is fitted into the locking groove is prevented from changing the assembly structure even if used for a long time.

Claims (5)

In the microwave oven that the upper case and the lower case is combined to form an outer case, The upper case has a bent and extended locking jaw is formed to surround the lower case at the lower edge of the lower edge in contact with the lower case, at least one hook is formed on the end surface of the locking jaw, The lower case is a step of the microwave oven, characterized in that the stepped portion is formed is seated on the stepped jaw, the stepped portion is formed with a locking groove is inserted into the locking ring is fixed so that the locking step is in close contact with the stepped portion. Mounting structure. The method of claim 1, wherein the hook ring A protrusion protruding from an end surface of the locking jaw; And A locking portion extending from the protrusion at a right angle toward the front end of the microwave oven and having one side inclined toward the locking jaw so that the locking jaw is in close contact with the stepped portion; Case mounting structure of the microwave oven comprising a. The method of claim 2, wherein the step portion A vertical stepped surface bent in a direction perpendicular to the side edge portion contacting the upper case and having the locking groove; A horizontal step surface bent in a direction perpendicular to the vertical step surface to be in close contact with the locking step; And A support surface bent in a direction perpendicular to the vertical step surface to be in close contact with an inner surface of the upper case; Case mounting structure of a microwave oven comprising a. The case mounting structure of claim 3, wherein the support surface includes at least one support protrusion to increase coupling force with an inner surface of the upper case. The method of claim 1, wherein the locking groove is The case mounting structure of the microwave oven, characterized in that the contact surface in which the locking step is inclined to be inclined in the horizontal step surface direction so that the locking step is in close contact with the horizontal step surface.

Images