KR960006059Y1 - Capacitor structure in microwave oven - Google Patents

Abstract

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Description

Structure of Magnetron Through-type Capacitor of Microwave Oven

1 is a ground diagram showing the installation state of a capacitor in a magnetron

2 is an exploded perspective view showing the technical configuration of a conventional capacitor

3 is a perspective view of a capacitor

(b) is an exploded perspective view showing the technical configuration of the present invention among the technical configuration of the capacitor

* Explanation of symbols for main parts of the drawings

4: through conductor 5: fixed tab

5a: inflation portion 20: projection

30: through hole

The present invention relates to a capacitor of a magnetron in which a through conductor and a fixed cap are coupled to each other. Particularly, in a magnetron used in a microwave oven, a protrusion is formed on a fixed tab and a through hole is formed in the through conductor to improve workability and quality. The present invention relates to a structure of a microwave magnetron through-type capacitor for improving productivity and reducing cost.

In general, the magnetron structure of the microwave oven is divided into a filter box having a capacitor installed at the bottom and a heat sink inserted into the oscillation unit, and a body having a donut-type permanent magnet installed at the upper and lower parts of the oscillation unit. Consisting of a through conductor, a fixed tab, a ceramic dielectric, an insulated tube, an insulator, an insulated cylinder, and the like.

After attaching the ground metal sphere (3) attached to the top cover (3a) having a conventional opening (3b) to the filter box 11, and then installed so that the top cover (3a) protrudes out of the filter box (11) The common electrode 8 is attached to the lower part, and the separation electrode 9 having the through holes 9a formed on both sides is attached to the upper part, and the electrical connector 10 is attached to the upper surface of the periphery of the through holes 9a on both sides thereof. A ceramic dielectric material (7) is attached to the upper part of the upper cover (3a) of the ground metal sphere (3), and put the insulator (1) on the outer periphery so as to surround the outer periphery of the upper cover (3a), Insert the insulation cylinder (2) at the periphery.

Thereafter, the pair of through-conductors 4 of the bar and the fixed tabs 5 having the inflated portion 5a formed on both sides of the lower bar are combined, and then the insulating tube 6 is covered with the through-conductor 4 of the bar to fix the above. The tab 5 is insulated from the insulator 1 and inserted into both through holes 9a so that the through conductor 4 faces the insulated cylinder 2, and then the insulator 1 and the insulated cylinder ( 2) the capacitor is installed in the filter box 11 of the magnetron by filling the insulating resin.

The coupling between the through conductor 4 of the bar and the fixing tab 5 is such that the through conductor 4 of the bar is inserted into the semicircular expansion part 5a protruding from both sides of the lower end of the fixing tab 5.

In the fixed tab 5 and the through conductor 4 coupled to each other by some components of the capacitor configured as described above, the pair of the through conductors 4 is a choke wound on the inductor 12 in the filter box 11. One end of the coil 13 is connected, and the other end of the choke coil 13 is connected to the power lead wire 14 drawn from the oscillation part of the magnetron, and one of the pair of fixed taps 5 is the other of the high voltage transformer. Is connected to the high voltage transformer and the high pressure capacitor.

After the high voltage capacitor and the high voltage transformer are connected, the power of the microwave oven is turned on, and the high voltage generated by the mutual induction of the primary and secondary induction coils of the high voltage transformer is applied to the magnetron by the capacitor. In addition, the high frequency leaked through the power lead wire 11 drawn from the oscillation part of the magnetron is prevented from leaking to the outside of the electric room and the electric room.

In the process of inserting and connecting the through-conductor 4 of the rod into the semicircular expansion portion 5a protruding from both sides of the lower end of the fixed tab 5 of the capacitor having the configuration and function as described above, the expansion portion 5a of the expansion portion 5a Since the inner diameter is larger than the outer diameter of the through conductor 4, the through conductor 4 flows, so that the through conductor 4 may escape from the fixed tab 5 and the perpendicularity of the through conductor 4 may be reduced. As the choke coil 13 wound on the inductor 12 in the through-conductor 4 and the filter box l1 is welded or connected by a separate mechanical connecting part, the cost is increased and the work place is difficult to maintain. There was a problem of environmental degradation.

An object of the present invention is to provide a structure of a magnetron through-type capacitor of the microwave oven for forming a protrusion on the expansion portion of the fixed tab and through holes in the through conductor to improve workability and quality.

The above object is to form a projection on the upper side of the expansion portion of the fixed tab, the through hole is formed in the center of the through-conductor, the end of the through-hole formed in the through-conductor is inserted and crimped, and in the inductance to block Achievable by insert crimping the wound choke coil.

When one end of the through-conductor having the through-hole is inserted into the expansion portion of the fixing tab in which the protrusion is formed, the through-hole and the protrusion are connected to each other so that the through-conductor is fixed to maintain the verticality and the coupling connection portion of the through-hole and the protrusion is maintained. By crimping, the electrical connection is strengthened, and workability is improved by inserting one end of the choke coil into the other end of the through hole of the through-conductor and then crimping and connecting.

When described in detail on the basis of the accompanying drawings the technical configuration and operation of the present invention as follows.

The present invention is installed in the coupling between the through-conductor (4) of the capacitor which is installed penetrating on one side of the magnetron filter box 11 of the microwave oven and the fixing tab (5) formed with the expansion portion (5a) at the bottom. A protrusion 20 is formed above the inflation portion 5a of the fixed tab 5, and a through hole 30 is formed in the center of the through conductor 4 to form the through conductor 4 as a pipe.

One end of the through hole 30 formed in the through conductor 4 is inserted into the protrusion 20 and the other end is inserted into the choke coil 13 wound on the inductor 12 and formed in the fixing tab 5. The shape of the protrusion 20 is formed in the form of a gradient (TAPER) so that the through-conductor 4 and the protrusion 20 are in close contact with each other so that the through-conductor 4 does not flow and maintains verticality.

In the fixed tab 5 and the through-conductor 4 of the capacitor configured as described above, when one end of the through-conductor 4 of the pipe is inserted into the expanded part 5a formed at the lower end of the fixed tab 5, the expanded part 5a. As the through hole 30 of the through conductor 4 is inserted into the gradient-shaped protrusion 20 protruding from the upper side, the outer diameter of the through conductor 4 is smaller than the inner diameter of the expansion part 5a. Since the projection 20 in the form of a gradient is tightly inserted into the through-conductor 4, the through-conductor 4 is fixed without flow and the verticality is maintained.

Thereafter, the outer diameter increases as the through conductor 4 is crushed by compressing the joint connection portion between the protrusion 20 and the through conductor 4, so that the fixing tab 5 and the through conductor 4 are electrically connected. Since the outer diameter of the larger through conductor 4 is greater than the inner diameter of the inflation portion 5a, the through conductor 4 does not fall out.

Then, one end of the choke coil 13 wound on the inductor 12 is inserted into the through-hole 30 at the other end of the through-conductor 4 to be electrically connected.

After turning on the power, the magnetron is oscillated by the capacitor configuration.

Effects shown by the configuration and operation of the present invention described above are as follows.

The inner diameter of the expansion part 5a formed in the fixed tab 5 is larger than the outer diameter of the through conductor 4 so that the through conductor 4 flows through the protrusion 20 through the fixed tab 5. As the through-holes 30 are formed in the conductors 4 to be coupled to each other, the projections 20 are inserted into and tightly adhered to the through-conductors 4 so that the verticality of the through-conductors 4 is maintained to maintain workability and quality. This improvement has the effect of cost reduction, and by crimping the joint connection portion between the protrusion 20 and the through conductor 4, there is no fear of detachment of the through conductor 4 as well as the electrical connection is firm, workability and quality This improves the cost and reduces the cost and environmental damage caused by the choke coil 13 wound around the through-conductor 4 and the inductor 12 by welding or connection by a separate mechanical connecting part. The problem with the through hole 30 of the other end of the through conductor (4) By inserting a large crimp the coil (13) has the effect of improving the workability and cost reduction and workplace environments.

Claims (3)

In the coupling tabs of the capacitors penetrating through one side of the magnetron filter box of the microwave oven and the fixing tabs 5 having the inflating portion 5a formed at the bottom thereof are coupled to each other, The projection magnet 20 is formed above the inflation portion 5a, and the through-hole 30 is formed in the center of the through-conductor 4 to form the through-conductor 4 as a tubular material. Structure of Through Capacitor According to claim 1, characterized in that one end of the through hole 30 formed in the through conductor (4) is inserted into the projection 20 and the other end is inserted into the choke coil (13) wound on the inductor (12) Microwave Magnetron Through-Through Capacitor Structure The structure of the through-type capacitor of the microwave magnetron according to claim 1, wherein the protrusions 20 formed on the fixing tabs 5 have a gradient shape.