JPH08115821A - Removal method of anode lead - Google Patents

Abstract

PURPOSE: To provide a removal method in which an anode lead can be removed from a case even when the anode lead is of an unremovable type by a method wherein a removal jig is inserted into a part between an anode and an anode- lead holding tube, a lead stopper is spread out and the holding and fixation state of the anode lead is released. CONSTITUTION: A removal jig 13 is inserted into a part between an anode lead 2 and the inside wall of an anode-lead holding tube 8, the tip of a lead stopper 10 which protrudes to the inside is spread out, and a lead-holding state is released. With the removal jig 13 accompanying the anode lead 2, the anode lead 2 and the jig 13 are pulled out from the anode-lead holding tube 8 at the same time. After the anode lead 2 has been removed from the body of a flyback transformer 1, the jig 13 is removed from the anode lead 2. Thereby, when it is required to remove the anode lead in an inspection, a failure or the like, the anode lead 2 can be removed from the body of the flyback transformer 1 by using the removal jig 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flyback transformer used in a television receiver or a display device using a cathode ray tube, and more particularly to a method for removing an anode lead.

[0002]

2. Description of the Related Art Generally, a flyback transformer is shown in FIG.
, The high voltage coils 4a, 4b, 4c, 4d
And high-voltage diodes 5a, 5b, 5c, 5d are alternately connected in series, and a high-voltage output voltage from the cathode of the high-voltage diode 5d is passed through the anode 2 to the cathode of the cathode ray tube 3. Supplied.

There are two methods for attaching the anode wire 2 to the main body of the flyback transformer 1, a pre-attachment method as shown in FIG. 8 and a post-attachment method as shown in FIGS. 9 and 10. The pre-attachment method means that the coil 4a, 4b, 4c, 4d of the high-voltage coil unit 4 and the diode of the high-voltage diode unit 5 are connected by connecting the anodic diode 2 to the high-voltage diode unit 5 simultaneously with the coil processing. This is a system in which the case 5 is mounted in the case 6 together with the cables 5a, 5b, 5c, 5d, etc., and the case 6 is filled with an insulating resin and cured. This type of flyback transformer is considered to have high reliability because it has excellent moisture resistance and mechanical strength. But a long anodried 2
Since the flyback transformer is attached to the high-voltage diode portion 5 in the case 6 at an early stage, the long anode lead 2 becomes an obstacle and the workability is not so good.
On the other hand, the retrofitting method, in order to improve the workability described above,
This is a method in which the anode lead 2 and the flyback transformer 1 main body are separated, the case 6 is filled with an insulating resin and hardened, and then the anode lead 2 is attached from the outside of the case 6. .

There are also two types of retrofitting methods. One of them is a type that can be removed from the flyback transformer 1 case 6 even after the anode lead 2 is mounted on the case 6 of the flyback transformer 1. Is. This is, as shown in FIG. 10, a connector 7 attached to the tip of the anode lead 2 and a pin 9 in a cylinder 8 for holding the anode lead provided on the case 6 on the coil side. Is to be fitted. Anode lead holding cylinder 8
Is made of an insulating resin such as modified polyphenylene oxide, and the connector 7 and the pin 9 are made of metal. Even after inserting the anode wire 2 into the holding cylinder 8 and fitting the connector 7 and the pin 9, if the lead wire 2 is pulled strongly, the fitting of the connector 7 and the pin 9 is released, and -Dreed 2 can be removed from case 6.

The other one is that if the anode wire 2 is attached to the case 6 of the flyback transformer 1, the anode wire 2 may be removed from the case 6 later. It is a type that cannot be done. As shown in FIG. 9, the anodic holding cylinder 8 is accommodated in the cylinder accommodating portion of the case 6. A stopper 10 for preventing the lead from coming off is integrally formed in the anode lead holding cylinder 8, and a fitting 12 for connecting the diode 5 with a pin 9 is provided at the innermost portion. Is provided. A metal crown 11 made of metal is attached to the tip of the anode lead 2 to connect it to the core wire, and is inserted into the cylinder 8 for holding the lead, and the metal crown 11 is attached to the fitting 12 for connection at the innermost portion. Mating. When you try to pull out the anode lead 2, the cylinder 8
The tip portion of the stopper 10 that protrudes inward is caught by the metal crown 11 at the tip of the lead and prevents the anode lead from coming off. It cannot be removed.

[0006]

In the type which can be removed later, as shown in FIG. 10, the anode lead 2 is used.
When some tensile force is applied to the
There was a risk that it would come off Case 6. Further, in the case of the non-detachable type as shown in FIG. 9, even when it becomes necessary to remove the anodried 2 from the case 6, the anodic 2
Could not be removed from Case 6.

An object of the present invention is to solve the above-mentioned drawbacks, and to provide a method for removing an anodried from a case as needed even if it is a non-detachable type. .

[0008]

The present invention has been made in order to achieve the above-mentioned object, and its characteristic feature is that in a flyback transformer having an anode lead, an anode is provided.
Insert a jig for removal between the dream and the anode hold cylinder, and spread the lead stopper that holds the anodride to hold and fix the anode. Is to remove the anode drill together with the jig from the holding cylinder.

[0009]

Operation: Insert the removal jig between the anode lead and the anode lead holding cylinder, and push the tip of the lead stopper holding the lead open to extend the holding state. When the anodried is pulled out while the jig is removed and the removal jig is attached to the anodried, the anodried can be removed from the holding cylinder.

[0010]

EXAMPLE An example of the present invention will be described below.
The same parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIGS. 1 and 2, in the mechanism for preventing the removal of the anodic lead 2, a lead stopper 10 integrally formed with the anodic lead holding barrel 8 is provided with a holding barrel 8. The anode lead 2 is sandwiched between the tip portions protruding inward. The inner diameter d1 of the holding cylinder 8, the outer diameter d2 of the metal crown 11, the outer diameter d3 of the anode wire 2 and the inner diameter d4 of the stopper 10 have the following magnitude relations. d1>d2>d3> d4 The inner dimension d4 of the lead stopper 10 is anodic.
Although it is smaller than the outer diameter d3 of the cord 2, it has flexibility in the outer diameter direction. Therefore, when the anode lead 2 is inserted, it is pushed outward by the metal crown 11 at the tip of the lead, It does not interfere with the insertion of Anode Dream 2. The tip of the lead stopper 10 after the insertion of the anode lead 2 is always the anode lead 2
Is in contact with When I try to pull out Anode Dream 2
The metal crown 11 attached to the leading end of the lead is caught by the leading end of the lead stopper 10 projecting inward, and the anode
I can't pull out Dream 2. Therefore, the holding cylinder 8
The tip portion of the lead stopper 10 protruding inward is spread by using the removing jig 13, the holding state is released so that the metal crown 11 can pass, and the removing jig 13 is anodried.
By pulling out the anode lead 2 together with the cord 2 attached, the anode lead 2 can be removed from the flyback transformer body.

FIG. 3 shows the shape of the removing jig 13. The outer diameter E is set to be smaller than the inner diameter d1 of the anode-holding cylinder 8 and larger than the outer diameter d2 of the metal crown 11. d1> E ≧ d2 The inner diameter G is set to be larger than the outer diameter d3 of the anode lead 2. The length dimension B is the anode-holding cylinder 8
A from the opening to the tip of the lead stopper-10
Set longer. G> d3 B> A The slit size F depends on the material of the jig 13, but
The size of the driers 2 is set so that they can be fitted into the jig 13. The jig 13 may be made of plastic or metal as long as it has practical strength.

As shown in FIG. 1, the removal jig 13 is fitted into the anodride 2 so as to be attached to the anodride 2 and the inner wall of the anodride holding cylinder 8. Insert it into and push the tip of the lead stopper-10 that protrudes inward. When the lead holding state is released, the anod lead 2 and the jig 13 are pulled out from the anod lead holding tube 8 together with the removal jig 13 attached to the anod lead 2. . When the anode lead 2 is removed from the flyback transformer body, the jig 13 is removed from the anode lead 2.

FIGS. 4 to 6 show another embodiment of the removing jig. The embodiment shown in FIG. 4 is an example in which two removal jigs each having a shape in which a pipe is vertically split are used. RC on the inner diameter side of the removal jigs 13a, 13b
Is set to be larger than 1/2 of the outer diameter d3 of the anode lead 2. The dimension H in the thickness direction is set smaller than the RD on the outer diameter side. C ≧ d3 / 2 D ≧ H Attach the first removal jig 13a to the anode wire 2 and the anode wire 2
It is inserted into the inner wall of the dream holding cylinder 8 and the tip of the lead stopper 10 on one side is widened. Then, the second jig 13b is connected to the anode wire 2 on the side opposite to the first jig 13b.
It is inserted between the inner wall of the dream holding cylinder 8 and the remaining lead.
The tip of the stopper 10 is pushed open to release the holding state of the lead, and the anode lead 2 is attached to the two jigs 13a and 13a.
Both are pulled out from the anode drill holding cylinder 8 while being sandwiched with b. In the above-mentioned example, since it is not necessary to fit the anode drill 2 into the jig, the shapes of the jigs 13a and 13b are simple, the processing is easy, and the selection of the material is easy. The embodiment shown in FIG. 5 corresponds to the removal jig 1 shown in FIG.
A handle is attached to one end of No. 3 for easy handling. Other structures and usages are exactly the same as the example of FIG.

The embodiment shown in FIG. 6 has a handle attached to one end of each of the removing jigs 13a and 13b shown in FIG. 4 for easy handling. Other structures and usages are exactly the same as the example of FIG.

[0016]

In the normal state, the anode lead does not come out of the flyback transformer body. If it becomes necessary to remove the anonode from the flyback transformer body when it is necessary to remove it for inspection or failure.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment in which a removing jig according to the present invention is mounted on an anoly dread of a flyback transformer.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a plan view (A) and a side view (B) showing a removal jig according to the present invention.

FIG. 4 is a plan view (A) and a side view (B) showing another embodiment of the removal jig according to the present invention.

FIG. 5 is a plan view (A) and a side view (B) showing still another embodiment of the removal jig according to the present invention.

FIG. 6 is a plan view (A) and a side view (B) showing still another embodiment of the removal jig according to the present invention.

FIG. 7 is a connection diagram of a general flyback transformer.

FIG. 8 is a cross-sectional view showing an example of an attachment type anodic attachment part in a flyback transformer.

FIG. 9 is a cross-sectional view showing an example of a retrofit type anodic attachment part in a flyback transformer.

FIG. 10 is a perspective view showing an example of a retrofit type anodic attachment part.

[Explanation of symbols]

 1 Flyback Transformer 2 Anode Dry 3 Cathode Ray Tube 4 High Voltage Coil 4a, 4b, 4c, 4d High Voltage Coil 5 High Voltage Diode 5a, 5b, 5c, 5d High Voltage Diode 6 Case 7 Connector 8 Anode lead holding cylinder 9 pin 10 Lead stopper 11 Metal crown 12 Metal fittings 13, 13a, 13b Removal jig

Claims (1)

[Claims] 1. A flyback transformer having an anolyde, in which a detaching jig is inserted between the anolyde and an anolyde holding cylinder. The anodread removal is characterized in that the lead stopper holding the card is pushed open to release the holding and fixing of the anodride, and the anodrid is removed from the holding tube together with the jig. Method.