KR20050005022A - Structure of Control Panel Bracket for Microwave Oven - Google Patents

Abstract

PURPOSE: A control panel bracket structure of a microwave oven is provided to prevent a control panel bracket from distorting by installing a rib for supporting between second frame units in an opening space. CONSTITUTION: A control panel bracket structure of a microwave oven is composed of a plurality of first frames(330a,330b) disposed vertically at the predetermined gap and fixed with both ends of a control glass on the front side; a plurality of second frames(370a,370b) arranged horizontally at the predetermined gap to connect horizontally between ends of the first frames; an opening unit(350) formed between the first and second frames and penetrated longitudinally; and a connection unit formed across the opening unit to link between the second frames. The connection unit is formed as a rib(400) and integrated with a control panel bracket(300).

Description

Structure of Control Panel Bracket for Microwave Oven {Structure of Control Panel Bracket for Microwave Oven}

The present invention relates to a microwave oven, and more particularly to a structure for preventing deformation of the control panel bracket for fixing the control panel to the front of the microwave oven.

A microwave oven is a device that generates microwaves in a magnetron by supplying electric current, and heats food by irradiating such microwaves with heated objects such as food. Such a microwave oven is generally classified into a microwave oven of a conventional concept used on a kitchen furniture or the like, and a microwave oven equipped with a hood provided on an upper wall surface of a gas oven range or the like. And, the door of the microwave oven can be divided into a side open structure generally used, and a drop dowm structure that opens from the top to the bottom.

The prior art of the microwave oven to which the drop-down door is applied will be described with reference to FIGS. 1 and 2.

As shown in the drawings, the microwave oven includes a cavity assembly 10 which performs cooking therein and an outer casing 20 and the cavity assembly 10 forming an exterior by surrounding the outside of the cavity assembly 10. It comprises a door 30 for selectively opening and closing the front of the.

The cavity assembly 10 includes a cavity 11 into which food to be cooked is input, and an electric equipment 13 installed above the cavity 11 and provided with various electrical equipments for controlling cooking of food. And a front plate 15 installed on the front of the cavity, a base plate 17 installed on the bottom surface, and a back plate 19 mounted on the rear surface of the cavity.

The cavity 11 is a place where the food to be cooked is input so that the bottom is flowable for uniform heating of the food. The flow may also be rotated to the left and right when the volume of food, as well as rotating the food. And a plurality of exhaust holes (not shown) are formed on the side of the cavity 11 for discharging the steam inside to the outside.

On the other hand, the bottom of the cavity 11 is provided with a base plate 17 for supporting the lower portion of the cavity. In addition, the back plate 19 is formed on the rear to protect the rear of the electrical component 13 of the cavity from the outside. The base plate 17 and the back plate 19 may be made of an iron plate to easily protect the cavity and the electric component 13 from external shocks.

In addition, the electric component 13 installed on the cavity 11 is a part that performs an actual function of the microwave oven. The electric field unit 13 generates and supplies a magnetron (not shown) for generating a high frequency, a waveguide (not shown) for guiding the high frequency generated in the magnetron to a cooking chamber, and a high voltage required to drive the magnetron. A high-pressure transformer (not shown) and a high-pressure capacitor (not shown) are mounted thereon, and a fan motor assembly (not shown) for cooling the electronic parts such as the magnetron, the high-pressure transformer, and the high-pressure capacitor and discharging steam in the oven. Is not installed).

The front plate 15 having a latch hole 15a and a hinge hole 15b for selectively opening and closing the door 30 is provided on the front surface of the electric component 13 and the cavity 11. . The front bracket 16 is coupled above the front plate 15. The front bracket 16 displays a state of the cavity and is attached with a control panel 40 for operating the microwave oven. And the front of the control panel 40 is provided with a button (40a) for inputting the type of operation by the user substantially.

The outer casing 20 has a main purpose of protecting the cavity assembly 10 serving as a main function of the microwave oven. Since various components for operating the microwave oven are installed in the cavity assembly 10, the cavity assembly 10 should be protected from external shocks and foreign substances. For this purpose, the outer casing 20 is typically made of steel sheet by sheet metal or the like.

The door 30 may be attached to the front surface of the microwave oven to selectively open and close the front surface of the cavity 11. The microwave wave irradiated to the cavity of the microwave oven is harmful to the human body, so the door 30 must close the entire cavity while the microwave oven is operating. Such a door 30 abuts the front plate 15 and is hinged to the lower portion of the front plate 15 via a hinge (not shown). In addition, a latch (not shown) coupled to the latch hole 15a formed in the front plate 15 is formed at an upper side of the rear surface of the door 30 to closely contact the door 30 to the front plate 15. .

Behind the control panel 40 is a PCB bracket 43 for processing the input signal by the button 40a, the substrate bracket 45 is provided with the PCB 43 and the substrate bracket ( 45 is provided with a control panel bracket 50 to which it is fixed. In addition, between the rear of the control panel 40 and the front of the control panel bracket 50 is provided a control glass 41 for transmitting the signal of the button 40a to the PC substrate 43. The PC substrate 43 is equipped with a microprocessor (not shown).

As shown in FIG. 3, the control panel bracket 50 has a rectangular frame shape, and is configured in the form of a protruding edge at the rear. This border extends from the frame. In addition, since the control panel bracket 50 is installed on the rear surface of the control panel 40, the control panel bracket 50 is configured in a shape corresponding to the rear surface of the control panel 40.

The control panel bracket 50 has a first frame portion (53a, 53b) formed in a rectangular shape on the left and right, and the second frame portion (57a, 57b) to horizontally connect between the first frame portion (53a, 53b) It consists of). In addition, an opening portion 55 is formed between the first frame portions 53a and 53b and the second frame portions 57a and 57b to communicate back and forth in a rectangular structure.

The second frame portions 57a and 57b are composed of long ribs having a predetermined height, and a hook-type protrusion 51 extending rearward is provided on the rear surface of the upper side. The end of the hook-type protrusion 51 is bent downward, so that the control panel bracket 50 is easily fixed to the front bracket 16.

In the structure as described above, the process of the control panel 40, the substrate bracket 45, the control glass 41, and the control panel bracket 50 is installed on the front bracket 16 as follows.

First, a sealant of an adhesive component (not shown) is applied to the front edge of the control panel bracket 50, and then the control glass 41 is attached to the front of the control panel bracket 50. And before the sealant is cured, the screw (S) is fastened to prevent flow. After the substrate bracket 45 is fixed to the rear of the control panel bracket 50, the front of the control panel bracket 50, that is, to combine the control panel 40 to the front of the control glass 41 to To complete the assembly.

The control panel 40, the substrate bracket 45, the control glass 41, and the control panel bracket 50 assembled as described above are hook-type protrusions 51 protruding to the rear of the control panel bracket 50. It is fixed to the front of the front bracket 16 by.

However, the control panel bracket 50 in the above structure has the following problems.

The control panel bracket 50 is manufactured by mold molding by a mold. Therefore, it is generally produced by heating the synthetic resin material and then injecting the synthetic resin material in a liquid state. The synthetic resin injected into the mold is cured as time passes and a certain amount shrinks. Therefore, it is common to design a predetermined size larger than a desired dimension when manufacturing a mold by a mold.

However, since the size of the second frame portions 57a and 57b of the control panel bracket 50 is relatively smaller than that of the first frame portions 53a and 53b, the second frame portions 57a and 57b are cooled during cooling. The first hardening is performed first and the first frame parts 53a and 53b are hardened relatively slowly. The difference in the curing speeds causes warpage between the first and second frame parts 53a and 53b and the second frame parts 57a and 57b. As a result, the control panel bracket 50 is twisted or bent.

If the control panel bracket 50 is twisted or bent, it is different from the shape of the back of the control panel. Therefore, there is a problem that can not assemble the control panel and the control panel bracket (50).

Accordingly, an object of the present invention is to solve the problems in the prior art as described above, and to improve the rigidity of the control panel bracket by forming a connection portion.

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

Figure 2 is an exploded perspective view showing a state in which the control panel bracket according to the prior art is installed on the front bracket of the microwave oven.

Figure 3 is a rear perspective view showing the configuration of a control panel bracket according to the prior art.

Figure 4 is an exploded perspective view showing the front of the microwave oven is installed control panel bracket according to the present invention.

Figure 5 is an exploded perspective view showing a state in which the control panel bracket according to the present invention is installed on the front bracket of the microwave oven.

Figure 6 is a rear perspective view showing a first embodiment of a control panel bracket according to the present invention.

Figure 7 is a rear perspective view showing a second embodiment of a control panel bracket according to the present invention.

Explanation of symbols on the main parts of the drawings

150: front plate 160: front bracket

160a: groove 200: control panel

210: control glass 250: PC board

300: control panel bracket 310: hook type projection

330a and 330b: first frame portion 350: opening portion

370a and 370b: second frame portion 400: rib

400a: bend portion 500: support plate

The structure of the control panel bracket according to the present invention for achieving the above object is a plurality of first frames are formed in the longitudinal direction at a predetermined interval and fixed to both ends of the control glass on the front, and the predetermined interval A plurality of second frame portions formed in a horizontal direction and connecting left and right ends between the ends of the first frame, opening portions formed between the first frame and the second frame and penetrating back and forth, and a space of the opening portions. It is formed across the and comprises a connecting portion for connecting between the second frame.

The connecting portion is preferably composed of ribs, it may be composed of a square plate.

Most preferably, the rib is integrally formed with the control panel bracket, and may be configured to connect between the second frame parts through a separate member.

In addition, the rib is preferably made of a synthetic resin material, and may be made of other steel materials or materials having sufficient strength.

According to the present invention having such a configuration, since the support between the second frame portion is more firm, torsion or shrinkage is prevented during manufacture of the control panel bracket by the mold.

Hereinafter, the structure of the microwave control panel bracket according to the present invention as described above will be described in more detail with reference to the accompanying drawings. Parts of the same parts as in the prior art use the symbols of the drawings used in the prior art.

Figure 4 shows well the front plate and the front bracket which is the object to which the control panel bracket is coupled according to the present invention.

The front plate 150 forms the front surface of the cavity 110, and the front edge 160 is vertically bent so that the front bracket 160 and the out casing (not shown) may be coupled from the outside.

On the other hand, the front bracket 150, which displays the state of the cavity 110, is coupled to the front bracket 160 to which the control panel 200 for operating the microwave oven is coupled. The front bracket 160 is configured to have groove portions 160a spaced inwardly from the front surface of the front plate 150. Therefore, the shape of the front bracket 160 is a structure in which a concave groove space is formed by bending the edge as shown in the figure.

As such, the groove portion 160a should be formed on the front surface of the front bracket 160. The PCB to which the microwave control circuit is printed inside the control panel 200 installed in the front bracket 160 is printed ( 250, a control glass 210 for receiving an input signal by the button 200a, and a control panel bracket 300 for receiving the PCB 250 and the control glass 210 are installed.

In particular, the configuration of the control panel bracket 300 installed in the recess 160a will be described with reference to FIGS. 5 and 6.

The control panel bracket 300 includes first frame parts 330a and 330b formed in a quadrangular shape, and second frame parts 370a and 370b for horizontally connecting the first frame parts 330a and 330b. In addition, a rectangular opening portion 350 is formed between the first frame portions 330a and 330b and the second frame portions 370a and 370b. And the space of the opening 350 is provided with a rib 400 for vertically connecting between the second frame portion (370a, 370b).

The rib 400 is formed in a substantially U-shape, and is equal to the thickness of the overall control panel 300. However, in the method of implementation, the thickness may be thick and may be thinned as necessary. The upper end of the rib 400 is fixed to the upper side rear surface 370a of the second frame portion, and the lower end is fixed to the rear side lower surface 370b. The bent portion 400a is formed at the upper and lower ends of the rib 400. The bent portion 400a is formed to be close to where the rib 400 and the second frame portions 370a and 370b contact each other. When the bent portion 400a is formed at both ends of the rib 400, a predetermined space is formed between the bottom surface of the rib 400 and the back surface of the second frame portions 370a and 370b. This space formation can prevent the rib 400 and the control glass 210 fixed to the front surface of the control panel bracket 300 of the above configuration from interfering with each other.

The ribs 400 are provided at left and right sides of the space of the opening 350. Such provision is for evenly supporting the long second frame portions 370a and 370b. However, the number of the ribs 400 may be variously selected according to the needs of the design.

The rib 400 is integrally formed with the control panel bracket 300, more specifically, the second frame parts 370a and 370b. This is for convenience of manufacture, and for the same purpose, another material may be configured in the same shape as the rib 400, and then may be connected between the second frame parts 370a and 370b with a fastening member or an adhesive. .

In addition, referring to Figure 7 another embodiment of the connecting portion as follows.

The second frame portion 330a, 330b and the second frame portion 370a, 370b horizontally connected between the first frame portion 330a, 330b, the second in the space of the opening 350 The support plate 500 for vertically connecting the frame parts 370a and 370b is provided.

The support plate 500 is formed of a rectangular frame. Upper and lower portions of the support plate 500 are attached to rear surfaces of the second frame portions 370a and 370b, respectively. Therefore, the left and right portions of the support plate 500 are configured to connect the second frame portions 370a and 370b across the opening portion 350 vertically. The support plate 500 is an embodiment for simultaneously supporting the second frame parts 370a and 370b through separate members.

Looking at the rib 400 as described above is as follows.

First, a mold having a shape in which the rib 400 is added to the shape of the control panel bracket 300 is manufactured. Then, after injecting a synthetic resin material in a heated liquid state into the manufactured mold and curing it according to the passage of time and cooling, the control panel bracket 300 to which the rib 400 as in the present invention is added is manufactured. The control panel bracket 300 is manufactured by the rib 400 of the present invention even if there is a difference in the curing speed of the second frame parts 370a and 370b and the curing speed of the first frame parts 330a and 330b during the curing process. Torsion is prevented.

Looking at the assembly of the control panel bracket 300 applied the present invention as described above are as follows.

First, the control glass 210 is attached to the front of the control panel bracket 300. At this time, a sealant (not shown) of an adhesive component is interposed between the front surface of the control panel bracket 300 and the control glass 210. Before the sealant is cured, the screw (S) is fastened to prevent flow. After fixing the PCB 250 to the rear of the control panel bracket 300, by assembling the control panel 200 to the front of the control glass 210 to complete the assembly.

As described above, the assembled control panel 200, the PCB substrate 250, the control glass 210, and the control panel bracket 300 are protruding hook-type protrusions formed to the rear of the control panel bracket 300 ( 310 is fixed to the front surface of the front bracket 160.

In this case, since the support structure of the control panel bracket is more firm, it is possible to improve the quality of the control panel bracket and to ensure stable quality of the microwave oven.

Within the scope of the basic technical spirit of the present invention as described above, of course, many other modifications are possible to those skilled in the art. Therefore, the present invention should be construed based on the appended claims.

The control panel bracket structure of the microwave oven according to the present invention as described above is constituted by further providing ribs supporting between the second frame portions in the open space. Therefore, there is an advantage that can prevent the twist of the control panel bracket by a simple rib installation.

In addition, the torsion prevention of the control panel bracket as described above has the advantage that the quality of the microwave oven in which the control panel bracket is finally assembled.

Claims (5)

A plurality of first frames formed in a longitudinal direction at predetermined intervals and fixed to both ends of the control glass on the front surface, and a plurality of first frames formed in the horizontal direction at predetermined intervals and connected left and right between ends of the first frame; And a second frame portion, an opening portion formed between the first frame and the second frame and penetrating back and forth, and a connecting portion formed across the space of the opening portion and connecting the second frame. Control panel bracket structure of a microwave oven, characterized in that. The control panel bracket structure of claim 1, wherein the connection unit is configured in plural numbers. 3. The control panel bracket structure of claim 2, wherein the connection part is formed of a rib and is integrally formed with the control panel bracket. The control panel bracket structure of claim 1, wherein the connection part is formed of a separate member. 5. The control panel bracket structure of claim 4, wherein the separate member comprises a plate.