KR19980050372U - Thermal fuse installation structure of microwave oven - Google Patents

Abstract

The present invention discloses a thermal fuse installation structure of the microwave oven.

The present invention is provided with a magnetron for oscillating high frequency in the side panel constituting the cooking chamber of the cabinet, a plurality of vent holes are formed in one side of the side panel so that air blown from the cooling fan assembly flows into the cooking chamber via the magnetron, A structure in which a thermal fuse for preventing overheating is installed between the magnetron and the vent holes by a clip of the holder. An extension piece having a catching hole is formed on one side of the magnetron so as to be adjacent to the vent holes, and the holder is formed of the fixing plate. A pair of hooks are formed on one side to correspond to each other and are engaged with each other, and first and second support pieces are respectively formed on upper and lower portions of the fixing plate so as to be supported at upper and lower portions of the extension piece to prevent rotation and flow of the holder.

Therefore, assembling is easily performed by the simple configuration of the holder, not only the assemblability of the product is remarkably improved, but also the number of parts is reduced, thereby reducing the production cost of the product. Moreover, the installation position and attitude | position of a thermal fuse can be changed easily by a simple structure.

Description

Thermal fuse installation structure of microwave oven

The present invention relates to a microwave oven, and more particularly to a thermal fuse installation structure of a microwave oven to prevent overheating of the microwave oven.

In general, a microwave oven cooks food with frictional heat generated by molecular motion by irradiating food with microwaves that are oscillated from a magnetron.

As shown in FIG. 1, the microwave cabinet (Ca) is divided into a substantially rectangular cavity Cv and a driving room Dr for cooking food. .

In addition, related driving parts such as a magnetron Ma and a high-pressure transformer Ht that oscillate high frequencies are installed in the drive chamber Dr of the cabinet Ca, and air is cooled into the cooking chamber Cv while cooling them. Cooling fan assembly (Cf) for blowing air is installed.

On the other hand, the microwave oven is a heater (heater) that is capable of cooking in a variety of ways depending on the type of food in the radio wave dispersion method using a high frequency of the magnetron (Ma).

Therefore, the high frequency is oscillated from the magnetron Ma of the driving chamber Dr, and the food is cooked while being distributed to the cooking chamber Cv, and the heater can be selectively and conveniently cooked according to the type of food.

However, there is a problem in that overheating occurs due to a sudden rise in the cooking process of the food or the temperature of the cooking chamber due to a fire or the like. In order to solve such a problem, a thermal fuse has recently been used as a safety device for preventing overheating. It is used.

And, when the thermal fuse is a temperature sensing type when the overheat occurs in the surroundings, when it reaches the set temperature of the dangerous state, the circuit is opened to block the supply of power to prevent overheating.

In the conventional thermal fuse installation structure of the microwave oven, as shown in FIG. 2, the magnetron Ma is installed at the center of one side surface of the side panel 10 constituting the cooking chamber Cv of the cabinet Ca. .

Meanwhile, a plurality of air vents 11 are formed in one side of the side panel 10 such that air blown from the cooling fan assembly Cf flows into the cooking chamber Cv via the magnetron Ma. An extension piece 12 is formed in one side of the magnetron Ma so as to be adjacent to the vent holes 11, and a screw hole 13 is formed in the center of the extension piece 12 to which the screw 14 is fastened.

In addition, the thermal fuse S is provided by the holder 20 in the extension piece 12 of the magnetron Ma, and the holder 20 has a through hole in one side of the fixing plate 21. (22) is formed, and the screw (14) is fastened to the screw hole (13) of the magnetron (Ma) through the through hole (22) of the fixing plate (21).

In addition, the holder 20 has a support piece 23 formed to prevent rotation of the holder 20 when the screw 14 is fastened to the upper portion of the fixing plate 21, and the support piece 23 is an extension piece ( It is held on one side of 12) to prevent rotation.

On the other hand, arms 24a and 24b capable of elastic deformation by predetermined elastic forces are formed on both sides of the fixed plate 21 so as to be opened at predetermined angles, respectively, and at the ends of the arms 24a and 24b. Clips 25a and 25b of ring-shaped bodies are formed so that the body B of the thermal fuse S is fitted and fixed.

However, in the above-described conventional thermal fuse installation structure of the microwave oven, the holder 20 for installing the thermal fuse S is assembled to the extension piece 12 of the magnetron Ma by fastening the screws 14. Therefore, there is a problem that the assembly process is complicated and cumbersome, and the assemblability of the product is significantly reduced. In addition, there is a problem that the production cost of the product is increased by increasing the number of parts due to the use of the screw 14.

On the other hand, the holder 20 cannot be directly installed in a part where the formation of the screw hole 13 is difficult, for example, the side panel 10 of the cabinet Ca, a duct (not shown), etc., and wiring is limited. There was a problem.

That is, when the screw hole 13 is formed in a portion vulnerable to deformation, strength, or the like, the fastening state of the screw 14 becomes unstable and the installation position and attitude of the thermal fuse S are changed or the holder 20 is detached. And the problem that separation occurs.

The present invention is devised to solve the conventional problems as described above, the object of the present invention is easy to assemble by a simple configuration to significantly improve the assemblability of the product, the number of parts is reduced It is to provide a thermal fuse installation structure of a microwave oven to reduce the production cost of the product.

Another object of the present invention is to provide a thermal fuse installation structure of a microwave oven, which can easily change the installation position and attitude of the thermal fuse by a simple configuration.

A feature of the present invention for achieving the above object is a magnetron for oscillating high frequency is installed in the side panel constituting the cooking chamber of the cabinet, the air blown from the cooling fan assembly on one side of the side panel via the magnetron to the cooking chamber. A plurality of vent holes are formed to be introduced therein, and a thermal fuse for preventing overheating between the magnetron and the vent holes is provided by a clip of the holder, and the hook hole extends to have the engaging holes adjacent to the vent holes on one side of the magnetron. A piece is formed, and the holder is provided with a pair of hooks corresponding to the engaging holes and coupled to one side of the fixing plate, and the upper and lower parts of the fixing plate are supported on the upper and lower parts of the extension piece to prevent rotation and flow of the holder. There is a thermal fuse installation structure of a microwave oven in which two support pieces are respectively formed.

Another feature of the present invention is a magnetron for oscillating a high frequency is installed in the side panel constituting the cooking chamber of the cabinet, a plurality of vent holes so that air blown from the cooling fan assembly into the cooking chamber via the magnetron on one side of the side panel And a thermal fuse for preventing overheating between the magnetron and the ventilation holes by the clip of the holder, wherein the fixing plate of the holder is formed such that the connecting plate and the horizontal plate have an approximately T-shape, and the horizontal plate The support plate is formed in the center of the first plate, and the first and second elastic plates each having a pressing portion that can be elastically deformed by a predetermined elastic force on both sides of the horizontal plate are formed apart from the support plate by a predetermined distance, respectively, the support plate and the first and Related driving part such as magnetron between the second elastic plate The sandwiched panels of the thermal fuse of the fitting structure is fixed microwave.

1 is a perspective view showing a typical microwave oven

2 is a perspective view showing a thermal fuse installation structure of a conventional microwave oven

3A and 3B are a perspective view and a partially sectional view showing the thermal fuse installation structure of the microwave oven according to the present invention

4a and 4b are a perspective view and a partially sectional view showing another example of the thermal fuse installation structure of the microwave oven according to the present invention

Explanation of symbols for main parts of the drawings

10; Side panel 11; Vent hole (in side panel)

30; Extension 31 (of magnetron); Hanging hole

40; Holder 41; Fixed Plate

42; Hooks 43,44; 1st and 2nd support piece

45a, 45b; Arms 46a, 46b; Clip

50; Fixed plate 51; Connecting plate

52; Horizontal plate 53; Support Plate

54,55; First and second elastic plates Ma; magnetron

P; Panel S; Thermal fuse

Hereinafter, a preferred embodiment of the thermal fuse installation structure of the microwave oven according to the present invention will be described in detail with reference to the accompanying drawings.

3A and 3B to 4A and 4B are views for explaining a thermal fuse installation structure of the microwave oven according to the present invention, and the basic configuration of the general microwave oven described in FIG. 1 will be described with the same reference numerals.

First, referring to FIG. 1, a configuration of a microwave oven is schematically described. The cabinet Ca of the microwave oven is divided into a cooking chamber Cv and a driving chamber Dr, and the driving chamber Dr of the cabinet Ca is formed. ), And related driving parts such as magnetron (Ma) and high voltage transformer (Ht) that generate high frequency are installed.

As shown in FIG. 3A and FIG. 3B, the magnetron Ma is installed in the center of one side of the side panel 10 which comprises the cooking chamber Cv of the cabinet Ca by fastening, and one side of the side panel 10 is shown. A plurality of vent holes 11 are formed in the air so that air blown from the cooling fan assembly Cf flows into the cooking chamber Cv via the magnetron Ma.

The extension piece 30 is formed to be adjacent to the vent holes 11 in one side of the magnetron Ma, and the engaging hole 31 is formed in the center of the extension piece 30.

In addition, the thermal fuse S is installed on the extension piece 30 of the magnetron Ma by the holder 40, and the holder 40 has a pair of hooks on one side of the fixing plate 41. ) Is formed, the hook 42 is fitted to be fitted to correspond to each other in the engaging hole 31 of the magnetron (Ma).

First and second support pieces 43 and 44 are respectively formed at upper and lower portions of the fixing plate 41 to prevent rotation and flow of the holder 40, and the first and second support pieces 43 and 44 are respectively formed. Is held by the upper and lower portions of the extension piece (30).

Here, the hook 42 of the holder 40 has been shown to be fitted into the engaging hole 31 of the extension piece 30, but the engaging hole 31 is a side panel ( 10) and what can be formed in a duct not shown are easily understandable.

On the other hand, arms 45a and 45b, which are elastically deformable, are formed on both sides of the fixing plate 41 at predetermined angles, respectively, and the body of the thermal fuse S is at the ends of the arms 45a and 45b. Clips 46a and 46b of ring-shaped bodies are formed respectively so that (B) is fitted and fixed.

As shown in Figs. 4A and 4B, the fixing plate 50 of the holder 40 is formed such that the connecting plate 51 and the horizontal plate 52 have an approximately T-shape.

The support plate 53 is formed in the center of the horizontal plate 52, and the first and second elastic plates 54 and 55, which are elastically deformable by a predetermined elastic force, are supported on both sides of the horizontal plate 52. 53 and a predetermined interval apart, respectively.

In addition, the pressing portions 54a and 55a are formed in a semi-circular shape at the ends of the first and second elastic plates 54 and 55, and the connecting plate 51 of the holder 40 is described with reference to FIGS. 3A and 3B. Arms 45a and 45b and clips 46a and 46b are formed identically.

On the other hand, the holder 40 is installed on a panel (P) of the associated drive parts constituting the magnetron (Ma), etc., the support plate 53 of the fixed plate 50 and the first and second elastic plates ( The panel P is sandwiched and fixed between 54 and 55.

Here, it is easily understood that the holder 40 can be installed in the panel constituting the side panel 10, the duct, or the like of the cabinet Ca.

Referring to the assembled state of the thermal fuse installation structure of the microwave oven according to the present invention as described above are as follows.

As shown in FIGS. 3A and 3B, the hook 42 of the fixing plate 41 is held in a state where the body B of the thermal fuse S is fixed to the clips 46a and 46b of the holder 40. It is held in the locking hole 31 of the magnetron Ma.

In addition, the first and second support pieces 43 and 44 of the fixing plate 41 are supported at upper and lower portions of the extension piece 30, respectively, to prevent rotation and flow of the holder 40. Therefore, since the holder 40 is easily assembled to the magnetron Ma, not only the assemblability of the product is remarkably improved, but also the number of parts is reduced, thereby reducing the production cost of the product.

On the other hand, since the locking hole 31 can be easily formed in the side panel 10, the duct, etc. other than the magnetron Ma as needed, the installation position and attitude | position of the holder 40 can be changed suitably.

Then, as the holder 40 is assembled to the extension piece 30 of the magnetron Ma, the body B of the thermal fuse S is installed to be adjacent to the vent holes 11. That is, the thermal fuse S is positioned between the magnetron Ma and the vent holes 11 of the side panel 10 by the holder 40.

Therefore, when the overheating of the magnetron (Ma) or abnormal cooking occurs during the cooking of food or the overheating of the cooking chamber (Cv) due to a fire or the like and reaches a dangerous set temperature, the thermal fuse (S) The circuit is sensed to open the circuit, and thus the power supply is cut off, thereby stopping the driving of related driving components such as the magnetron Ma to prevent overheating.

As shown in FIGS. 4A and 4B, the holder 40 has a panel P of associated driving parts between the support plate 53 of the stationary plate 50 and the first and second elastic plates 54, 55. In this case, the panel P is easily fitted and fixed by the elastic deformation of the first and second elastic plates 54 and 55.

At this time, the support plate 53 is supported on one surface of the panel P, and the pressing portions 54a and 55a of the first and second elastic plates 54 and 55 are supported on the other surface of the panel P. Since the elasticity is pressed, the holder 40 is firmly assembled to the panel (P).

Therefore, since the holder 40 is firmly assembled by sandwiching the panel P between the support plate 53 and the first and second elastic plates 54 and 55, the assemblability of the product can be remarkably improved. In addition, the number of parts is reduced, thereby reducing the production cost of the product.

In addition, since the panel P can use the panel which comprises the side panel 10 of the cabinet Ca, the duct, etc., the installation position and attitude | position of the holder 40 can be changed suitably and can be used.

On the other hand, the above embodiment is merely to describe one preferred embodiment of the present invention, the scope of application of the present invention is not limited to such, and can be changed appropriately within the scope of the same idea, for example It is widely applicable to various temperature sensing devices for preventing overheating.

As described above, according to the thermal fuse installation structure of the microwave oven according to the present invention, assembling is easily performed by the simple configuration of the holder, not only the assemblability of the product is remarkably improved, but also the number of parts is reduced to produce the product. The unit price is reduced. Moreover, the installation position and attitude | position of a thermal fuse can be changed easily by a simple structure.

Claims (2)

A magnetron for oscillating high frequency is installed in the side panel constituting the cooking compartment of the cabinet, and a plurality of vent holes are formed in one side of the side panel such that air blown from the cooling fan assembly flows into the cooking compartment via the magnetron. As a structure for installing a thermal fuse between the magnetron and the vent holes to prevent overheating by a clip of the holder, An extension piece 30 having a locking hole 31 is formed at one side of the magnetron Ma so as to be adjacent to the ventilation holes 11. The holder 40 has a pair of hooks 42 which are coupled to each other and corresponding to the engaging hole 31 on one side of the fixing plate 41, First and second support pieces 43 and 44 are respectively formed at upper and lower portions of the fixing plate 41 so as to be supported at upper and lower portions of the extension piece 30 to prevent rotation and flow of the holder 40. A thermal fuse installation structure of a microwave oven. A magnetron for oscillating high frequency is installed in the side panel constituting the cooking compartment of the cabinet, and a plurality of vent holes are formed in one side of the side panel such that air blown from the cooling fan assembly flows into the cooking compartment via the magnetron. As a structure for installing a thermal fuse between the magnetron and the vent holes to prevent overheating by a clip of the holder, The fixing plate 50 of the holder 40 is formed such that the connecting plate 51 and the horizontal plate 52 form an approximately T-shape, The support plate 53 is formed in the center of the horizontal plate 52, First and second elastic plates 54 and 55 having pressing portions 54a and 55a that are elastically deformable by a predetermined elastic force on both sides of the horizontal plate 52 are provided with the support plate 53 and a predetermined length. Are formed each apart the gap, The thermal fuse of the microwave oven, characterized in that the panel (P) of the associated drive parts such as the magnetron (Ma) is sandwiched between the support plate 53 and the first and second elastic plates (54, 55). Installation structure.