MXPA97006995A - Microon oven - Google Patents

Abstract

A microwave oven comprises a main body, a cooking chamber, and an electrical component compartment. The electrical component compartment contains a fuse housing that is mounted on a fastener to stop a fuse. Plastic coupling members are integrally mounted on the fuse housing holder, where a fuse is inserted. Each coupling member is formed with a guide on the fastener, which projects upwards from the fastener. Both sides of the fuse housing contact through each guide that projects upwards. A protruding portion on top of each guide acts to trap the upper part of the fuse housing. The guides are separated equidistantly from each other, and elastically stop the housing of the fuse. The most representative figure of the invention is the number

Description

MICROWAVE ANTECEDENTS OF L? INVENTION (1) Field of the Invention The present invention relates generally to a microwave oven that bakes food using a magnetron. More particularly, it relates to a microwave oven having an improved fuse coupling structure. (2) Description of the Prior Art In general, a microwave oven is a cooking apparatus that cooks food by frictional heat produced by causing the food molecules to cook with high speed movement, using high-frequency energy. This microwave oven has a cooking chamber and an electrical component compartment separated from each other inside the main body. The main body is formed by an internal box, which houses the cooking chamber, and an external box that acts as a decorative exterior. A door is articulated on one side of the front of the inner box, to open and close the cooking chamber. A control panel that has a visual display and operation buttons is located adjacent to the door. The compartment of the electrical component is placed between the internal box and the outer box. This includes an air duct that introduces air and microwave frequencies into the cooking chamber, produced by a magnetron. A high voltage transformer that supplies high voltage to the magnetron, and a fan to cool the electrical components during operation. The fan is placed in a middle portion of an engine fastener, fixed on the inner side of the rear panel of the electrical component compartment. A fuse, to interrupt the excessive current, sits in a fuse housing. It is fixed on the upper part of the motor fastener, and its coupling structure is illustrated in Figure 4. As shown in the drawing, a fuse 1 is stopped in a fuse housing 5. A pair of rectangular ribs 7 are formed. integrally on the upper part of the motor holder 8. The ribs 7 are made of plastic by means of an injection molding process. The ribs 7 are separated from one another by the width of the housing of the fuse 5. A hole 6 is formed between the ribs 7. At both ends of the fuse housing 5, a terminal 3 is electrically connected to both ends of the fuse 1. A wire (not shown) is connected to each of the terminals 3. A coupling opening 4 is formed on the part by the housing of the fuse 5, through which a screw 2 passes. The housing of the fuse 5 is interposed between the ribs 7 so that the coupling opening 4 is aligned with the screw hole 6. When the screw 2 is screwed and compressed in the hole 6, passing through the coupling opening 4, secured to the housing from the fuse 5 to the upper part of the motor bracket 8. The ribs 7, which make contact on both sides of the fuse housing 5, prevent the housing of the fuse 5 from being delocalized when it is screwed into place. The fuse 1 is then inserted between the terminals 3 of the fuse housing 5, thereby ending the coupling of the fuse housing 5. When replacing a used fuse housing with a new one, it is necessary to loosen the screw 2 and then tighten it afterwards. of the replacement. This lowers the operational efficiency of the unit. In addition, during production, workers are required to individually screw the fuse housings to the top of the motor fasteners, by means of screwdrivers. As a result, the number of components and production steps is increased, thus making assembly complicated, and lowering production yields. Consequently, the overall production costs increase. Since the bracket of the motor 8 is made of plastic, if the previous work is done frequently, the hole 6, with the lines in the form of a thread, will separate, causing the screw 2 to loosen. In addition, the fuse housing 5 can be removed from the upper part of the fastener of the motor 8, by external vibration or shock, which endangers the safe operation. SUMMARY OF THE INVENTION The present invention is a microwave oven that can obviate the shortcomings and drawbacks of the conventional technique. It is an object of the present invention to provide a microwave oven wherein coupling members are molded, each having a guide and a protruding portion, on top of a motor fastener, which are equidistantly spaced apart from each other, and insert a fuse housing between the coupling members, in such a way that it is elastically attached to the upper part of the motor fastener, thereby offering a better coupling structure of the fuse housing, and reducing the number of components to lower the production costs. To obtain the objective of the present invention, the microwave oven of the invention, with a main body divided into a cooking chamber and an electrical component compartment, and a fuse housing installed on a fastener in the electrical component compartment for containing a fuse, further includes coupling members formed on the holder to adjust the fuse housing thereto. Each of the coupling members includes an upwardly projecting guide formed on the upper part of the fastener, and makes contact with both sides of the fuse housing, and a protruding portion formed on the upper guide part, to trap the section top of the fuse housing. The guides are in pairs and equidistantly separated one from the other, to contain the fuse housing. The coupling members, with elastic properties, are integrally mounted on the fastener. BRIEF DESCRIPTION OF THE ATTACHED DRAWINGS Figure 1 is a perspective view separated into parts of the overall structure of the microwave oven according to the present invention. Figure 2 is a perspective view separated in parts showing the coupling structure of the fuse housing in accordance with the present invention. Figure 3 is a cross-sectional view taken along line A-A of Figure 2, showing the coupling structure of the fuse housing. Figure 4 is a perspective view separated into parts of the coupling structure of the fuse housing according to the prior art.

DETAILED DESCRIPTION OF THE PREFERRED MODALITIES Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. As shown in Figure 1, a microwave oven of the present invention has a main body 100, wherein a cooking chamber 200 and an electrical component compartment 400 are provided. The main body 100 includes an inner box 120, in wherein the cooking chamber 200 is formed with an open side, and an outer case 110 that engages the inner case 200, and has the electrical component compartment 400, which is separate from the cooking chamber 200. A door is articulated 300 on one side of the front of the main body 100, for opening and closing the cooking chamber 300. Also located is a control panel 310, with operation buttons (not shown), and a visual display (not shown), on the front of the main body 100. The compartment of the electrical component 400 houses a magnetron 410 to generate microwave frequencies for the cooking chamber 200. Also a high-voltage transformer is housed voltage 420 and a fan 430 for cooling the heat emission, in the compartment of the electrical component 400. The fan 430 is located in the middle part of a motor fastener 500. The motor fastener 500 is formed of molded plastic, and ensures a ventilated rear panel 130. A guide conduit 450 is provided to introduce air into the cooking chamber 200. A fuse housing 530, and a fuse 440, which serves to interrupt the excessive current, are mounted on top of the motor fastener 500. The housing of the fuse 530 is inserted between a pair of coupling members 510. A detailed description follows about the coupling members 510 with reference to Figures 2 and 3. The housing of the fuse 530 is a. quadrilateral body with a specified length. On both ends of the fuse housing 530 are the formed terminals 540, which are electrically connected to the fuse 440. A fixing point 520 is formed on the right and left sides of the fuse housing 530 projecting upwards. This allows the installation of terminals 540 at each point, to which a wire is connected (not shown). To firmly stop the fuse housing 530, a pair of coupling members 510 projecting upwardly on the upper part of the motor fastener 500 are formed. Each of the coupling members 510 is comprised of a guide 510b projecting upwardly. , on top of the motor fastener 500, to stop both sides of the fuse housing 530, and an inwardly projecting portion 510a formed on the guide 510b, to trap the upper portion of the fuse housing 530, when inserted between the coupling members 510. The innermost end of the protruding portion 510a forms a right angle with the guide 510b, and the guide 510b are equidistantly spaced apart from each other, enough to insert the fuse housing 530. To provide elasticity , the protruding portion 510a and the guide 510b are formed as integral components of the motor fastener 500, by means of plastic injection molding. When the fuse housing 530 is inserted between the coupling members 510, which are formed by the guide 510b and the protruding portion 510a on the upper part of the motor fastener 500, the guides 510b enclose the fuse housing 530, while that the protruding portions 510a, which are formed on the guides 510b, elastically stop the upper portion of the fuse housing 530, whereby the fuse housing 530 is fixed to the upper part of the motor holder 500. In In this state, both ends of the fuse 430 are connected to the terminals 540. The housing of the fuse 530 can move slightly forward and backward. When he does so, the protruding portions 510a trap the fixing portions 520 of the fuse housing 530. Accordingly, the fuse housing 530 can not be relocated without applying an intentional force. When replacing the fuse housing 530 with a new one, it can be loosened by removing it from the guides 510b, pulling back the elastic material of the guides 510b. The housing of the fuse 530 can be removed by moving it upwards. In accordance with the present invention, the fuse housing 530 can be easily attached to, and removed from, the upper part of the motor fastener 500, by using injection molded coupling members 510. This method improves the output of the the production line, and facilitates replacement of the fuse housing 530. As fully described above, the microwave oven of the invention includes the improved coupling members, each having a guide and a protruding portion. These are separated from one another on top of the motor fastener, thereby inserting the fuse housing therebetween. The molded plastic coupling members trap the fuse housing with the guides, and prevent it from relocating with the protruding portions due to its elasticity. By means of this structure, the fuse housing can be easily attached or removed to the upper part of the motor fastener, and the number of components is decreased. Therefore, this lowers production costs.

Claims (4)

1. NOVELTY OF THE INVENTION Having described the foregoing invention, it is considered as a novelty, and therefore, property is claimed as contained in the following: CLAIMS 1. A microwave oven having a main body divided into a cooking chamber and a compartment of the electrical component, and a fuse housing installed on a fastener inside the compartment of the electrical component to stop a fuse; the microwave oven further comprising coupling members formed on the holder to adjust the fuse housing thereto. A microwave oven according to claim 1, characterized in that each of the coupling members includes a guide projecting upwardly formed on the holder, and making contact with both sides of the fuse housing, and a protruding portion formed on the upper part of the guide, to trap the upper section of the fuse housing. 3. A microwave oven according to claim 2, characterized in that the guides are in pairs, and are separated equidistantly from each other, to stop both sides of the fuse housing. 4. A microwave oven according to claim 1, characterized in that the coupling members, with elastic properties, are mounted integrally on the fastener.