KR20040061100A - Door-handle joint structure for microwave oven - Google Patents

Abstract

PURPOSE: A door handle combining structure of a microwave oven is provided to reduce the number of parts and shorten operation time by combining and stably fixing a handle to a door of the microwave oven in a simple fitting structure by a hook combination. CONSTITUTION: A door handle combining structure of a microwave oven is composed of a door panel(241) and a door handle. The door panel comprises a cylindrical handle inserting part(242); an annular barrier(243) positioned in the inner end of the handle inserting part and formed with a hole in the center; panel supporting bars(244) protruded toward the rear side of a door at the predetermined positions of the barrier; a hook fixing unit(245) formed at the outmost side of the handle inserting part, tapered to the central part, and protruded to the rear side of the door; and a hook inserting hole(247) disposed between the hook fixing unit and the panel supporting bar at the barrier. The door handle includes combining units(271) formed at both ends with an outer diameter same with an inner diameter of the handle inserting part of the door panel; a hook(273) formed at the outer periphery of the combining unit with facing forward; and a cylindrical boss(272) formed in the combining unit. The hook of the door handle passes through the hook inserting hole between the hook fixing unit and the supporting bar of the panel and engages with the hook fixing unit. The boss is inserted and combined to the hole of the door panel.

Description

Door handle joint structure for microwave oven

The present invention relates to a microwave oven, and more particularly to a door handle fastening structure of the microwave oven.

In general, a microwave oven (MWO) is a device for cooking food by the heat of intermolecular friction generated by disturbing the molecular arrangement of food by using a high frequency (about 2,450 MHz per second) as a heating source.

1 is a perspective view showing the appearance of a conventional general microwave oven.

Referring to FIG. 1, the microwave oven generally includes a main body 10 including a front case 11 and an outer case 12, an exterior frame 13, a cavity 20 forming a cooking chamber, and It is configured to include an electric equipment room 30 in which various electric equipment parts are installed.

In this case, the front case 11 forms the front surface of the main body 10, and is provided with a cavity door 14 for opening and closing the cavity 20.

In addition, the exterior frame 13 forms the bottom and the rear of the main body 10 and together with the outer case 12 and the front case 11 to protect the cavity 20 and the electric compartment 30 from an external environment. do.

The electrical component is a magnetron 31 that generates microwaves, a high voltage transformer 32 that supplies a high voltage to the magnetron 31, and various electrical components inside the body 10. It is comprised including the blowing fan 33.

The door 14 of the microwave oven having the above-described configuration is rotatably formed with one side as an axis by hinge coupling, and a handle 17 is provided as a means for opening and closing the door 14.

The handle 17 has a variety of application forms, but as shown is fixed to two places on the door 14 is generally formed to be pulled out after inserting the hand inward.

2 is a cross-sectional view showing a door handle fastening structure of a conventional microwave oven.

As shown in the figure, the door panel 141 of the microwave oven has a handle inserting portion 142 recessed inward, and a screw hole 143 is formed at the inner end of the handle inserting portion 142. The inside of the handle inserting portion 142 is usually circular.

The handle inserting portion 142 is inserted into the coupling portion 171 which is the end of the handle 17, the coupling portion 171 of the handle is a cylindrical boss 172 is formed again inside the cylindrical outer wall, In the boss 172, a screw 19 to be described later is inserted and tightened.

The process of coupling the handle 17 to the door panel formed as described above is as follows.

First, both ends of the handle 17 are inserted into the handle insertion portion 142 formed in the door panel. When the coupling part 171 is inserted into the handle insertion part 142, the screw hole 143 formed at the inner center of the handle insertion part 142 and the boss 172 of the handle coupling part 171 coincide with each other. The screw 19 is inserted into the screw hole 143 and tightened with a screwdriver so that the handle 17 is coupled to the door panel 141.

However, the conventional coupling structure as described above requires a separate fixing member such as a screw to couple the handle and the door, thereby increasing the number of parts, which causes a problem of increased cost.

In addition, after inserting the coupling portion of the handle to the handle insertion portion of the door panel, the operator has to fix the screw directly, so the process time is delayed and the productivity is also lowered.

The present invention has been made in order to solve the problems of the prior art described above, when fastening the handle to the door of the previous range, it is possible to fasten with a simple combination structure by the hook coupling, and at the same time to be fixed stably to save parts and process time It is an object of the present invention to provide a door handle fastening structure of a microwave oven that can shorten.

1 is a perspective view schematically showing the appearance of a conventional general microwave oven.

Figure 2 is a cross-sectional view showing a state in which the door handle of the conventional microwave oven is fastened to the door panel.

Figure 3 is a side cross-sectional view showing a preferred embodiment of the door handle fastening structure of the microwave oven according to the present invention;

4 is a front sectional view of the fastening structure shown in FIG.

5 is a cross-sectional view showing a state in which the hook of the door handle of the present invention is inserted.

** Explanation of symbols for main parts of drawings **

241: door panel 242: handle insert

243: Barrier 244: Panel Support

245: hook fixing section 246: outer cylinder

247: hook insertion hole 271: handle coupling

272: boss 273: hook

In order to achieve the above object of the present invention, in the door handle fastening structure of a microwave oven, a substantially cylindrical handle inserting portion is formed, and an inner end of the handle inserting portion has an annular barrier having a hole in the center thereof, A panel support protruding to the rear portion of the door is formed, and at the outermost portion of the handle inserting portion, a hook fixing portion is formed at the outermost side of the handle insert, which is tapered toward the center and protrudes into the rear portion of the door. A door panel formed with holes; A coupling portion having an outer diameter having the same diameter as the handle insertion portion inner diameter of the door panel is provided at both ends, and a hook facing forward is formed on the outer circumference of the coupling portion, and a cylindrical boss is formed inside the coupling portion; And the hook of the door handle passes through the hook insertion hole between the hook fixing part and the support of the panel to engage with the hook fixing part, and the boss is inserted into and fastened to the hole of the door panel. Provide handle fastening structure.

The door handle fastening structure of the microwave oven according to the present invention will be described in more detail with reference to the accompanying drawings. For reference, prior to describing the configuration of the present invention, in order to avoid duplication of description of the prior art reference to the same reference numerals will be referred to.

Figure 3 is a side cross-sectional view showing a preferred embodiment of the door handle fastening structure of the microwave oven according to the present invention and Figure 4 is a front sectional view of the fastening structure.

3 and 4, the door handle is composed of a central body (not shown) and two engaging portions 271 formed at both ends, and the engaging portion 271 is formed inside the door panel 241. It is fastened to the formed handle inserting portion 242.

The cross-section of the door handle 27 is formed in a circular shape, and the inside of the handle inserting portion 242 into which the door handle 27 is inserted is also formed in a circular shape. The outer diameter of the engaging portion 271 of the door handle 27 preferably matches the inner diameter of the handle inserting portion 242 of the door panel 241.

Coupling portion 271 of the door handle 27 is provided with a cylindrical boss 272 having a small diameter inside the cylindrical appearance. The outer cylindrical portion 246 of the coupling portion 271 is formed with two hooks 273 opposed to the origin. The head portion 273a of the hook 273 is installed so that the fastening jaw 273b faces the outside. In the above embodiment, two hooks 273 are formed, but three or four may be formed to form a more stable fastening structure.

The handle inserting portion 242 of the door panel has a cylindrical shape so that the cylindrical handle engaging portion 271 is easily inserted, and a barrier 243 is formed at the inner end so that the handle engaging portion 271 does not proceed any further. It is.

A circular hole 243a is formed at the center of the barrier 243, and the hole 243a is a hole into which the boss 272 of the door handle 27 is inserted. The hole 243a has a boss 272 of the door handle 27 inserted therein to more stably support the hook coupling when the handle 27 is fastened.

Two panel supports 244 are formed on the outer periphery of the barrier 243 in which the holes 243a are formed. The panel support 244 is formed to protrude to the inside of the door panel 241, and has a slight elastic force due to the plastic material.

As shown in FIG. 3, the panel support 244 is formed in a structure in which the cross section of the barrier-side fixing part is small and the cross section is gradually expanded.

The hook fixing part 245 is formed at the outer part of the panel support 244 again. 3 and 4, the hook fixing part 245 is formed on the outer cylindrical portion 246 of the handle inserting portion 242 and the outer portion of the panel support 244 to be paired with the panel support 244. Is formed.

The hook fixing part 245 is inclined to be inclined as it enters the door panel 241, and the inclined inclination angle is formed to be close to the panel support 244. A hole 247 is formed between the hook fixing part 245 and the panel support 244, and the hook 273 of the door handle 27 is inserted into the hole 247. Shall be.

Like the panel support 244, the hook fixing part 245 is made of a plastic material and protrudes to have a predetermined elasticity.

Hereinafter, the fastening process of the door handle fastening structure of the microwave oven will be described as follows.

5 illustrates a process in which the hook 273 is inserted when the door handle 27 of the present invention is fastened to the door panel 241.

First, as shown in FIG. 5, the most protruding portion of the door handle 27 is the hook. Since the hooks are formed at two upper and lower sides of the coupling part 271 in the present embodiment, the two hooks 273 are first inserted into the hook insertion holes 247 inside the handle insertion part 242.

The hook fixing part 245 is formed at one side of the hook insertion hole 247, and the panel support 244 is formed at the other side to protrude into the door. When the hook 273 is inserted, the panel support 244 is hook head part. Because of the thickness of (273a), it is somewhat pushed. The hook fixing part 245 may also be pushed, but may be manufactured to have a larger rigidity than the panel support 244.

As the hook 273 enters the hook insertion hole 247, the boss 272 formed at the center of the handle coupling part 271 is inserted into the hole 243a of the barrier 243.

As the panel support 244 is pushed in, the hook head portion 273a passing through the hook fixing portion 245 passes through the hooking jaw 273b, and the hook fixing portion 245 is caught. The panel support 244 pushed by) is restored. The front end of the handle engaging portion 271 to be inserted is blocked by the barrier 243 inside the handle inserting portion 242, and as the hook 273 is fastened to the hook fixing portion 245, the reverse is also blocked and stable. A fastening structure is achieved.

The boss 272 of the door handle 27 penetrates the hole 243a of the barrier 243 and is located between the two panel supports 244, thereby preventing the panel supports 244 from being pushed by an external force.

The above-described embodiment is only an example for expressing the technical spirit of the present invention in detail, and it is apparent that various modifications may be made to the position, form, and material of the components within the scope not departing from the technical spirit of the present invention. Do.

The door handle fastening structure of the microwave oven according to the present invention can be improved by a simple combination structure that does not require a fixing member in the manner of fastening the door handle to the door by using a separate fixing member such as a conventional screw can reduce the parts and cost have.

The operator simply inserts the door handle into the handle insert of the door panel and pushes the door handle to the door, thereby simplifying the process and shortening the microwave manufacturing time, thereby improving productivity.

Claims (4)

In the door handle fastening structure of the microwave oven, An approximately cylindrical handle insert is formed, and an inner end of the handle insert is formed with an annular barrier having a hole formed in the center thereof, and a predetermined position of the barrier is provided with a panel support protruding to the rear surface of the handle insert. A door fixing part tapered toward the center and protruding toward the rear surface of the door, and a hook insertion hole formed between the hook fixing part and the panel support at the barrier; A coupling portion having an outer diameter having the same diameter as the handle inserting portion inner diameter of the door panel is provided at both ends, a hook facing forward is formed on the outer circumference of the coupling portion, and a cylindrical boss is formed inside the coupling portion; , The door handle fastening of the microwave oven, wherein the hook of the door handle passes through the hook insertion hole between the hook fixing part and the support of the panel, and the boss is inserted into the hole of the door panel. rescue The method of claim 1, Door handle fastening structure of the microwave oven, characterized in that formed at least two panel support and hook fixing parts The method of claim 1, The panel support of the door panel is made of a plastic material, the door handle fastening structure of the microwave oven, characterized in that it has elasticity. The method of claim 3, wherein The panel support is a door handle fastening structure of a microwave oven, characterized in that the cross section of the fixing portion attached to the handle blocking portion is small and gradually increases in cross section.