KR20050100180A - Wall-mounting type microwave oven - Google Patents

Abstract

The present invention relates to a wall-mounted microwave oven having a fixing structure of a PCB substrate that can prevent deformation or breakage of the PCB substrate and reduce production costs.

Wall-mounted microwave oven according to the present invention includes a control panel 220 for receiving a command for the operation of the various electrical components for oscillating high frequency; A PCB substrate 410 for controlling the operation of the various electric components according to a command received from the control panel 220; A bracket 420 interposed between the control panel 220 and the PCB board 410 to protect the PCB board 410 and installed on a rear surface of the control panel 220; Fixing hooks 421a and 422a provided on the control panel 220 to fix the PCB substrate 410; And fixing holes 411 and 412 formed in the PCB substrate 410 to insert the fixing hooks 421a and 422a.

Description

Wall-mounted microwave oven {WALL-MOUNTING TYPE MICROWAVE OVEN}

The present invention relates to a wall-mounted microwave oven, and more particularly to a PCB board installation structure of the wall-mounted microwave oven.

The wall-mounted microwave oven is a cooking apparatus installed on the upper part of the gas oven range and has a function of discharging combustion gas, steam, and food odors generated in the gas oven range to the outside in addition to the food cooking function.

In the conventional wall-mounted microwave oven, as shown in FIG. 1, an inner case 10 partitioned into a cooking chamber 10a for cooking food and an electric cabinet 10b in which various electric components are installed, and the inner case ( 10) and an outer case 20 which is installed at a predetermined interval apart.

The cooking chamber 10a includes a tray 11 provided to hold food, and the tray 11 is rotatably installed to allow food to be evenly cooked during cooking. The front side of the cooking chamber (10a) is provided with a door 21, one side of which is hingedly coupled to open and close rotatably, the food is entered through the door (21).

The electrical equipment room 10b includes a magnetron 12 for oscillating a high frequency to cook food, and electrical components such as a high voltage transformer 13 for supplying high voltage power to the magnetron 12, and the magnetron 12. The high frequency oscillated at is transmitted to the cooking chamber 10a via the waveguide 14 provided to communicate the cooking chamber 10a and the electric chamber 10b. In front of the electric compartment 10b, a control panel 22 provided with operation buttons 22a for receiving an operation command from a user and a display 22b for displaying an operation state of a microwave oven is provided.

In order to cool the heat generated by the electronic parts during the operation of the microwave oven, the outside air is distributed into the electric compartment 10b. For this purpose, a cooling fan 15 is installed in the front of the electric compartment 10b, and the air is supplied to the fan. Intake port 23 is provided on the upper side of the control panel 22 to allow the inflow. The air circulated through the electric compartment 10b flows into the cooking compartment 10a through a plurality of through holes 16 provided in the wall separating the cooking compartment 10a and the electric compartment 10b, and ventilates the cooking compartment 10a. Passed through a plurality of through-holes 17 provided on the upper side of the cooking chamber (10a) is discharged to the outside through the exhaust port 24 provided on the upper side of the door 21.

In addition, in order to perform a function of discharging the combustion gas or steam generated in the gas oven range of the lower portion of the oven to the outside, the lower portion of the microwave oven, that is, the inlet for suctioning the combustion gas or the like on the bottom of the outer case ( 25 is provided, the combustion gas sucked through the inlet 25 passes through the exhaust passage 30 formed between the inner case 10 and the outer case 20, and connects the exhaust passage 30 to the outdoors. The exhaust duct 31 is discharged to the outside. An exhaust fan 32 is provided above the rear of the microwave oven to promote the exhaust action.

On the other hand, as shown in Figure 2, the back of the control panel 22 is a PCB (Printed Circuit Board) PCB 41 for controlling various electrical components in accordance with the command input by the operation button (22a) is installed In addition, the PCB 42 and the control panel 22 is interposed between the bracket 42 of the iron plate material is to act to protect the PCB (41).

The PCB substrate 41 is fixed to the control panel 22 by a plurality of fixing screws 43, and a hole 42c having a fixing protrusion 22c having a female thread formed on the rear surface of the control panel 22 in the bracket 42. It is provided to support the bottom surface of the PCB substrate 41 through).

Under the fixed structure of the PCB substrate 41, the PCB substrate 41 may be deformed due to a predetermined pressure by the head of the fixing screw 43, and may be deformed when continuous pressure or other external shock is applied. There is a concern that a crack may be generated from the fixing portion and propagated to the entire PCB substrate.

The present invention is to solve this problem, it is an object of the present invention to provide a wall-mounted microwave oven having a fixing structure to prevent deformation or breakage of the PCB substrate.

Still another object of the present invention is to provide a wall-mounted microwave oven that can be easily assembled and reduce production costs by simplifying the fixing structure of the PCB.

A microwave oven according to the present invention for achieving the above object includes a control panel for receiving a command for the operation of the various electrical components for oscillating high frequency; A PCB board controlling the operation of the various electrical components according to a command received from the control panel; A bracket interposed between the control panel and the PCB to protect the PCB and installed on a rear surface of the control panel; A fixing hook provided on the control panel to fix the PCB board; It characterized in that it comprises a fixing hole formed in the PCB substrate so that the fixing hook is inserted.

In addition, the fixing hook and the fixing hole is characterized in that a plurality provided.

The plurality of fixing hooks may include side fixing hooks for supporting side portions of the PCB, and the plurality of fixing holes may include side fixing holes corresponding to the side fixing hooks.

In addition, the bracket includes a rectangular base and a circumference bent vertically in a direction opposite to the control panel around the base,

The side fixing hook extends in parallel to the base at the circumference and is formed in a shape bent back to the base side.

The plurality of fixing hooks may include a lower fixing hook for supporting a lower portion of the PCB, and the plurality of fixing holes may include lower fixing holes corresponding to the lower fixing hooks.

In addition, the bracket includes a rectangular base and a periphery bent vertically in the opposite direction of the control panel around the base,

The lower fixing hook extends perpendicular to the base and is provided in a shape bent downward again.

In addition, the fixing hook is characterized in that formed integrally with the bracket.

Hereinafter will be described in detail with reference to the wall-mounted microwave oven according to an embodiment of the present invention.

Since the wall-mounted microwave oven according to the present invention is the same as the conventional wall-mounted microwave oven except for the structure of fixing the PCB, the following description will be made only on the structure of fixing the PCB.

As shown in Figure 3, the rear surface of the control panel 220 of the wall-mounted microwave oven according to the present invention is provided with a PCB substrate 410 for controlling the operation of the microwave oven, including various electrical components, this PCB Between the substrate 410 and the control panel 220 is a bracket 420 of the iron plate material for protecting the PCB substrate 410 is interposed.

Various electronic elements constituting the control circuit are provided on the PCB substrate 410, and a plurality of fixing holes 411 and 412 are provided around the PCB substrate 410 to fix them. The fixing holes 411 and 412 include side fixing holes 411 provided at both sides of the PCB substrate 410, and lower fixing holes 412 provided below the PCB substrate 410.

The bracket 420 is inserted into and fixed to the rear surface of the control panel 220, and has a substantially rectangular base 421 and a circumference portion provided around the base 421 and bent vertically to the opposite side of the control panel 220. 422. In the bracket 420, a plurality of fixing hooks 421a and 422a for fixing the PCB substrate 410 are integrally formed, and these fixing hooks 421a and 422a are parallel to the base 421 at the circumference 422. And a side fixing hook 422a which is formed in a shape bent toward the base 421 and inserted into the side fixing hole 411 of the PCB substrate 410, and extends perpendicular to the base 421 and then downwards again. The lower fixing hook 421a is bent and inserted into the lower fixing hole 412 of the PCB substrate 410.

In order to fix the PCB 410 to the bracket 420, first, the lower fixing hook 421a of the bracket 420 is inserted into the lower fixing hole 412 of the PCB 410, and then the side fixing hook 422a. 5 is inserted into the side fixing hole 411 of the PCB substrate 410 by elastic deformation as shown in FIG. 5, the PCB substrate 410 is fixed to the bracket 420. When the bracket 420 is inserted into the rear side of the control panel 220 again, the assembly is completed as shown in FIG.

As described above, since the PCB board 410 of the wall-mounted microwave oven according to the present invention is fixed by the fixing hooks 421a and 422a and the fixing holes 411 and 412, the pressure is applied to the PCB board 410 unlike the conventional fixing structure. Since it is not applied, the PCB substrate 410 is prevented from being damaged due to deformation or cracking.

In addition, since it is fixed by fixing hooks 421a and 422a integrally formed on the bracket 420 without requiring a separate fixing screw for fixing the PCB board 410, material is reduced, and the assembly process is simplified and production cost is reduced. Is reduced.

As described in detail above, since the PCB board of the wall-mounted microwave oven according to the present invention is fixed by a fixing hook formed integrally with the bracket and a fixing hole provided in the PCB board, the deformation or damage of the PCB board is prevented. have.

In addition, since a separate fixing screw is not used, the material is reduced and the assembly process is simplified, thereby reducing the production cost.

1 is a perspective view showing a wall-mounted microwave oven according to the prior art.

Figure 2 is an exploded perspective view showing a PCB substrate fixing structure of the wall-mounted microwave oven according to the prior art.

Figure 3 is an exploded perspective view showing a PCB substrate fixing structure of the wall-mounted microwave oven according to the present invention.

Figure 4 is a perspective view showing a bonded state of the PCB substrate of the wall-mounted microwave oven according to the present invention.

FIG. 5 is a sectional view taken along the line V-V in FIG. 4; FIG.

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

220: control panel 410: PCB board

411,412: fixing hole 420: bracket

421: base 421a: lower fixing hook

422: circumference 422a: side fixing hook

Claims (7)

A control panel which receives a command for operating various electric components for generating high frequency; A PCB board controlling the operation of the various electrical components according to a command received from the control panel; A bracket interposed between the control panel and the PCB to protect the PCB and installed on a rear surface of the control panel; A fixing hook provided on the control panel to fix the PCB board; And a fixing hole formed in the PCB to insert the fixing hook. The method of claim 1, And the fixing hook and the fixing hole are provided in plural. The method of claim 2, The plurality of fixing hooks include a side fixing hook for supporting the side of the PCB substrate, the plurality of fixing holes comprises a side fixing hole corresponding to the side fixing hook. The method of claim 3, The bracket includes a rectangular base and a periphery bent vertically in the opposite direction of the control panel around the base, The side fixing hook extends in parallel to the base in the circumference and the wall-mounted microwave oven, characterized in that it is provided in a shape bent back to the base side. The method of claim 2, The plurality of fixing hooks include a lower fixing hook for supporting the lower portion of the PCB substrate, the plurality of fixing holes comprises a lower fixing hole corresponding to the lower fixing hook. The method of claim 5, The bracket includes a rectangular base and a periphery bent vertically in the opposite direction of the control panel around the base, And the lower fixing hook extends perpendicular to the base and is bent in a downward direction again. The method according to any one of claims 1 to 6, The fixed hook is a wall-mounted microwave oven, characterized in that formed integrally with the bracket.