JP3239732B2 - Flyback transformer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a flyback transformer used in each type of video equipment, industrial equipment and the like.

[0002]

2. Description of the Related Art A conventional flyback transformer will be described below with reference to the drawings. 8, reference numeral 1 denotes an insulating case, 2 denotes a focus block, and 3 denotes a shaft of the focus block 2. A focus block 2 having a focus shaft 3 is fitted into the insulating case 1, a magnetic core 4 is assembled, and an anode In this configuration, a high voltage is output from the lead 5. 9 and 10, a flyback transformer requiring a high-voltage condenser 7 has a focus block 6 with a high-voltage condenser tank.
Is used. Further, the flyback transformer requiring the high resistance 9 shown in FIGS. 11 and 12 has a configuration in which the focus block 8 with the high resistance storage unit is used.

[0003]

In the above-mentioned conventional configuration,
In a flyback transformer that requires a high-voltage capacitor 7 and a high resistance 9, the focus block 6 with a high-voltage condenser tank and the focus block 8 with a high-resistance storage unit are replaced with the focus block 2 of FIG. It is necessary to use properly.

However, since a high voltage is generally applied to the focus block, it is not only necessary to check the reliability of the focus blocks of various shapes for a long time, but also to improve the reliability. And it is also difficult to simplify and rationalize the production process of the focus block.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a flyback transformer in which focus block productivity is improved and reliability is improved.

[0006]

According to the present invention, in order to achieve the above object, the opening of the storage section is preferably arranged in order from the innermost end.
A first fitting wall and a second fitting wall;
The outer periphery of the hook is fitted to the first fitting wall of the opening.
The first fitting wall with the fitting groove.
And the second fitting wall is used to fit the
The side of the focus block is supported, and the second
The height dimension of the fitting wall is the height dimension of the first fitting wall of the opening.
It is higher than the law .

[0007] together and have a focus adjusting body to the surface
The concave portion is provided on the back surface, in which the outer peripheral portion of the focus block having an insulating resin in the recess fitted to the opening of the insulation case.

According to the above configuration, when a conventional focus block with a high-voltage capacitor tank or a focus block with a high-resistance storage section is used, an insulating case provided with high-voltage electronic components such as a high-voltage capacitor tank and a high-resistance storage section is stored. The same focus block can be used by fitting the focus block into the storage section using the section.

As a result, only one type of focus block is required, so that the time required for checking the reliability of the focus block can be shortened and the reliability can be improved, and the production process of the focus block can be simplified and streamlined. Can also be achieved.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the invention according to claim 1 of the present invention, in particular, the openings of the storage portion are arranged in the order of the first from the innermost end.
A focusing wall having a fitting wall and a second fitting wall,
A peripheral part is a fitting groove fitted to the first fitting wall of the opening.
The first fitting wall is fitted in the fitting groove.
And the focus is adjusted by the second fitting wall.
The side of the block is supported, and the second mating wall is
The height dimension is larger than the height dimension of the first fitting wall of the opening.
The configuration is raised .

With this configuration, when a focus block with a high-voltage condenser tank or a focus block with a high-resistance storage section is used, the storage section provided with high-voltage electronic components such as the high-voltage condenser tank and the high-resistance storage section is used. The same focus block can be used if the focus block is fitted to the portion.

As a result, only one type of focus block is required, so that the productivity of the focus block and the reliability can be improved.

Further, since the fitting groove of the focus block is fitted into the first fitting wall of the opening of the housing part, it can be fixed and held focus block the opening of the housing portion.

Further, the side face of the focus block is supported by the second fitting wall, and the height of the second fitting wall is made higher than the height of the first fitting wall. securely support the side surfaces of the focus block can be securely fixed and held a full O over <br/> dregs blocks the opening of the housing portion.

Further, since the focus block can be elastically supported by the second fitting wall in the opening of the storage section, a load is applied to the storage section in which the focus block is fitted, and the storage section is bent. Can absorb this,
It is also possible to prevent the focus block from detaching from the opening of the storage section.

Also, the concave portion on the back surface of the focus block
Is filled with the second insulating resin, so that the entire focus block is hardened and it is difficult to fit into the storage portion.
Can be height dimension of the second fitting wall is easier to cause the Rihama case by the fact that higher than the height of the first fitting wall.

The second aspect of the present invention is the first aspect.
In the flyback transformer described above, the depth dimension of the fitting groove of the focus block is higher than the height dimension of the first fitting wall of the opening of the storage section.

According to this structure, a gap is formed between the upper side of the first fitting wall and the bottom side of the fitting groove. Therefore, when the focus block is elastically supported by the second fitting wall in the opening of the storage section. This makes it easier to generate an elastic force, makes it easier to absorb the bending and the like of the storage section, and prevents the focus block from being detached from the opening of the storage section.

The third aspect of the present invention provides the first aspect.
In the flyback transformer described above, a cutout portion is provided in the first fitting wall or the second fitting wall of the opening of the storage portion, and a convex portion fitted to the cutout portion is provided on an outer peripheral portion of the focus block. This is a configuration provided.

With this configuration, when the focus block is fitted into the opening of the storage section, it is possible to prevent the fitting block from being erroneously fitted.

[0021] The invention described in claim 4 of the present invention is claim 1.
In the flyback transformer described above, a convex portion is provided on the first fitting wall or the second fitting wall of the opening of the storage portion, and a notch portion fitted with the convex portion is provided on an outer peripheral portion of the focus block. The configuration is as follows.

According to this configuration, when the focus block is fitted into the opening of the storage section, it is possible to prevent a wrong fitting direction of the focus block.

The invention according to claim 5 of the present invention is the invention according to claim 1.
In the flyback transformer described above, the height dimension of the focus block is the same as the height dimension of the second fitting wall of the opening of the storage section.

According to this configuration, when the side surface of the focus block is supported by the second fitting wall, the side surface of the focus block is reliably supported, and the focus block is securely fixed and held by the opening of the storage portion. it can.

The invention according to claim 6 of the present invention is the invention according to claim 2.
In the flyback transformer described, focus blow
Height of the second fitting wall at the opening of the storage portion.
The height is the same as the height.

With this configuration, the second fitting wall forms the forearm.
When supporting the side of the focus block,
The focus block is stored by securely supporting the side of the
The opening of the portion can securely fix and hold.

The invention according to claim 7 of the present invention, according to claim 1
In the flyback transformer according, the opening of the housing portion has a first fitting wall and a second fitting wall and the third fitting wall in order from the innermost end, said second fitting The height dimension of the wall is not more than the depth dimension of the fitting groove of the focus block, and the side face of the focus block is supported by the third fitting wall.

With this configuration, the side surface of the focus block is supported by the second fitting wall, and the side surface of the focus block is also supported by the third fitting wall, so that the side surface of the focus block is securely supported. Thus, the focus block can be securely fixed and held by the opening of the storage section.

Further, since the focus block can be elastically supported by the second fitting wall of the opening of the storage portion, even if the storage portion is bent or the like can be absorbed, the focus block can be moved to the opening of the storage portion. It is also possible to prevent detachment from the part.

Further, since the height of the second fitting wall is less than the depth of the fitting groove of the focus block,
The elastic force can be mutually dispersed by the end face of the fitting groove of the focus block and the second fitting wall, so that the elastic force is not excessively applied to the second fitting wall. Can be prevented from being damaged.

Embodiment 1 Hereinafter, Embodiment 1 of the present invention will be described with reference to the drawings.

[0032] Figure 1, a flyback transformer in the first embodiment of the shown to the present invention in FIG. 2, which has a focus adjustment member 25 on the surface, a concave portion 24a provided on the rear surface, filled with an insulating resin 24b in the recess 24a An insulating case 21 containing a focus block 24, a bobbin around which a primary coil and a secondary coil are wound, and a storage part 22 for storing the focus block 24, and an epoxy insulating resin filled in the insulating case 21. 27. At this time, the storage section 22 is separated from the insulating case 21.

Then, the anode lead 29 for outputting a high voltage is pulled out from the insulating case 21, and the magnetic core 28 is incorporated in the insulating case 21, and the storage section 2 of the insulating case 21 is provided.
2, an opening 30 is provided, and the outer periphery of the focus block 24 is fitted into the opening 30 from the rear side in FIG.

Further, the openings 30 of the insulating case 21 has the innermost end and the first fitting wall 31 in order of the second fitting wall 32, the outer peripheral portion retract and 22 of the focus block 24 The first fitting wall 31 is fitted in the fitting groove 26 of the focus block 24, and the first fitting wall 31 is fitted in the fitting groove 26 of the focus block 24. The side face of the focus block 24 is supported by the second fitting wall 32.

Further, the height dimension of the second fitting wall 32 is made higher than the height dimension of the first fitting wall 31, and the height dimension of the focus block 24 is
The height of the fitting wall 32 is the same as the height of the fitting wall 32.

The operation of the flyback transformer having the above configuration will be described below.

First, the reason why the fitting groove 26 in the outer peripheral portion of the focus block 24 is fitted to the first fitting wall 31 of the storage portion 22 of the insulating case 21 will be described. Unlike the present embodiment, as shown in FIG. 3, when fitting to the insulating case 21 around the focus adjustment body 25, the focus adjustment body 25 of the focus block 24 is
By penetrating within, it will be brought into the insertion engagement guide cylinder 72 of the retract and 22 through the outer surface of the shaft tube 74.

[0038] By this time, the outer surface of the shaft tube 74 and the guide cylinder 72 of the housing portion 22, since it is necessary to perform simultaneously leakproof epoxy insulating resin 27 in the insulating case 21, off becomes strong fitting Since the gap 75 for rotating the focus adjusting body 25 between the focus adjusting body 25 and the shaft cylinder 74 disappears, and the focus adjusting body 25 does not rotate, the configuration of FIG. 3 is not adopted.

1 and 2, the rotation of the focus adjustment body 25 is not hindered. In addition, when a focus block with a high-pressure condenser tank or a high-resistance storage section focus block is used, the high-pressure condenser tank The same focus block 24 can be used by fitting the focus block 24 into an opening of an insulating case provided with high-voltage electronic components such as a resistance housing.

As a result, one type of focus block 2
Since only 4 is needed, the productivity of the focus block 24 can be improved, and the reliability can be improved.

The fitting groove 2 of the focus block 24
6 fits into the first fitting wall 31 of the opening 30 of the storage section 22 of the insulating case 21, so that the focus block 24
Can be fixedly held in the opening 30 of the insulating case 21.

Further, since the first fitting wall 31 is provided in the storage section 22 and the fitting groove 26 is provided in the focus block 24, the focus block 24 is moved outward by the epoxy insulating resin 27 in the insulating case 21. Even if pressed
The focus block 24 does not detach from the storage section 22.

The side face of the focus block 24 is supported by the second fitting wall 32, and the height of the second fitting wall 32 is made higher than the height of the first fitting wall 31. Therefore, the side surface of the focus block 24 is securely supported, and the focus block 24 is
Can be securely fixed and held in the opening 30 of the storage section 22.

Further, the height of the focus block 24 is adjusted to the second dimension of the opening 30 of the storage section 22 of the insulating case 21.
Since the second fitting wall 32 supports the side surface of the focus block 24, the side surface of the focus block 24 is surely supported, and 24 can be securely fixed and held by the opening 30 of the storage section 22.

Further, the focus block 24 is connected to the second fitting wall 32 of the opening 30 of the storage section 22 of the insulating case 21.
Can be elastically supported, the load is applied to the storage section 22 in which the focus block 24 is fitted, and even if the storage section 22 is bent or the like can be absorbed, this can be absorbed. It is also possible to prevent detachment from 30.

Since the concave portion 24a on the back surface of the focus block 24 is filled with the insulating resin 24b,
Although the entire focus block 24 is hardened and becomes difficult to fit into the storage section 22, by setting the height of the second fitting wall 32 higher than the height of the first fitting wall 31,
This can facilitate the fitting.

As described above, according to the first embodiment of the present invention, only one type of focus block 24 is required, so that the productivity of the focus block 24 can be improved and the reliability can be improved. You can do it.

Further, the focus block 24 can be reliably fixed and held in the opening 30 of the storage section 22, and the separation of the focus block 24 from the storage section 22 can be prevented.

In the first embodiment of the present invention, the storage section 22 for storing the focus block 24 is
Although it is separated from 1, the same effect can be obtained as a single unit.

The fitting groove 2 of the focus block 24
6 is made higher than the height of the first fitting wall 31 of the opening 30 of the storage section 22, the first fitting wall 31
Since a gap is generated between the top side of the fitting groove 26 and the bottom side of the fitting groove 26,
The focus block 24 is connected to the opening 30 of the insulating case 21.
When the elastic member is elastically supported by the second fitting wall 32, the elastic force is more easily generated, and the bending and the like of the storage section 22 are more easily absorbed, and the focus block 24 is detached from the opening 30 of the storage section 22. Can be prevented.

Further, as shown in FIG. 4, the storage section 22 is provided with a high-resistance storage section 52 and a high-voltage capacitor storage section 53, and the high-resistance storage section 52 and the high-voltage capacitor storage section 53 have high resistances 51 respectively. As shown in FIG. 5, a high-voltage connection pin holding table 62, a high-voltage connection pin storage section 63, a focus ground connection pin holding storage section 64, and a high-voltage capacitor ground connection pin A holding storage section 66 and the like are provided, the high voltage connection pin 61 is stored in the high voltage connection pin storage section 63, the focus ground pin 65 is stored in the focus ground connection pin storage section 64, and the high voltage capacitor ground connection pin is provided. The same effect can be obtained even in a configuration in which the 67 is housed in the pin holding housing 66 for the high-voltage capacitor ground connection.

Embodiment 2 Hereinafter, a flyback transformer according to Embodiment 2 of the present invention will be described with reference to the drawings.

The flyback transformer according to the second embodiment differs from the flyback transformer shown in FIG.
A notch 40 is provided in the second fitting wall 32, and a projection 41 that fits into the notch 40 is provided on a side surface of the focus block 24.

In FIG. 7, the protrusion 42 is formed on the second fitting wall 32 of the opening 30 of the storage portion 22 of the insulating case 21.
Is provided on the side surface of the focus block 24.
And a notch 43 that fits into the notch.

With the above configuration, the focus block 24
When fitting into the opening 30 of the storage portion 22 of the insulating case 21, the fitting direction of the focus block 24 can be prevented from being erroneous.

As described above, according to the second embodiment of the present invention, it is possible to prevent the fitting direction of the focus block 24 from being incorrect.

The same effect can be obtained by providing the concave portion 40 and the convex portion 42 on either the first fitting wall 31 or the second fitting wall 32.

Embodiment 3 Hereinafter, a flyback transformer according to Embodiment 3 of the present invention will be described.

The flyback transformer according to the third embodiment is the same as the flyback transformer according to the first embodiment, except that the third fitting is carried out outside the second fitting wall 32 in the opening 30 of the storage portion 22 of the insulating case 21. A configuration in which a joining wall is provided, the height of the second fitting wall 32 is set to be equal to or less than the depth of the fitting groove 26 of the focus block 24, and the side of the focus block 24 is supported by the third fitting wall. It is what it was.

According to the above configuration, the side surface of the focus block 24 is supported by the second fitting wall 32,
Since the side surface of the focus block 24 is also supported by the third fitting wall, the side surface of the focus block 24 is securely supported, and the focus block 24 is
Can be securely fixed and held by the opening 30 of the storage section 22 of the storage section 22.

Further, since the focus block 24 can be elastically supported by the second fitting wall 32 of the opening 30 of the storage section 22 of the insulating case 21, even if the storage section 22 is bent, it can be absorbed. It is also possible to prevent the focus block 24 from being detached from the opening 30 of the storage section 22.

Further, since the height of the second fitting wall 32 is smaller than the depth of the fitting groove 26 of the focus block 24, the end face of the fitting groove 26 of the focus block 24 and the second fitting The joint wall 32 allows the elastic force to be dispersed to each other, so that the elastic force is not excessively applied to the second fitting wall 32, and the damage to the second fitting wall 32 can be prevented. .

As described above, according to the third embodiment, in addition to the effects of the first embodiment, the focus block 2
4 can be fixedly held to the storage portion 22 of the insulating case 21 and prevented from being detached, and the elastic force applied to the end face of the fitting groove 26 of the focus block 24 and the second fitting wall 32 can be dispersed. It is also possible to prevent the second fitting wall 32 from being damaged.

[0064]

As described above, according to the present invention, when a conventional focus block with a high-voltage capacitor tank or a focus block with a high-resistance storage section is used, the insulation provided with the high-voltage capacitor tank and the high-resistance storage section is provided. Since the focus block is fitted into this storage portion using the storage portion of the case, only one type of focus block is required.

As a result, the time required for checking the reliability of the focus block can be shortened and the reliability can be improved even if insulating cases of various shapes are used.
It is possible to provide a flyback transformer that simplifies and streamlines the production process of the focus block.

[Brief description of the drawings]

FIG. 1 is a perspective view of a flyback transformer according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of a storage section of the flyback transformer.

FIG. 3 is a sectional view of a comparative example used for comparison with the configuration of the first embodiment of the present invention;

FIG. 4 is an exploded perspective view of an insulating case with a storage section with high resistance and high voltage capacitor.

FIG. 5 is an exploded perspective view of an insulating case with a housing having a high-resistance, high-voltage capacitor, a focus ground pin and a high-voltage capacitor ground connection pin;

FIG. 6 is an exploded perspective view of a storage portion of a flyback transformer according to Embodiment 2 of the present invention.

FIG. 7 is an exploded perspective view of a storage unit in which the storage unit is improved.

FIG. 8 is a perspective view of a conventional flyback transformer.

FIG. 9 is a perspective view of a flyback transformer with a high-voltage capacitor.

FIG. 10 is an exploded perspective view of a focus block of the flyback transformer.

FIG. 11 is a perspective view of a flyback transformer with high resistance and high voltage condenser.

FIG. 12 is an exploded perspective view of a focus block of the flyback transformer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Insulation case 22 Storage part 24 Focus block 24a Depression 24b Insulating resin 25 Focus adjusting body 26 Fitting groove 27 Epoxy insulating resin 28 Magnetic core 29 Anode lead 30 Opening 31 First fitting wall 32 Second fitting wall

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 62-109417 (JP, U) JP-A 4-121714 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) H01F 19/04 H04N 3/195

Claims (7)

(57) [Claims] 1. A focus block having a recess focus adjustment member closed and the back surface to the surface, and <br/> to the primary coil and a housing portion for accommodating the focus block and the high-pressure electronic components An insulating case for housing a bobbin around which a secondary coil is wound, wherein an opening is provided in the insulating case and the housing, and the housing is housed in an opening of the insulating case; The outer periphery of the focus block is fitted into the opening of the housing, and the insulating resin is filled in the housing of the insulating case and the recess of the focus block, and the opening of the housing is
It has a first fitting wall and a second fitting wall in order from the innermost end,
The outer peripheral portion of the focus block is the
A fitting groove for fitting into the first fitting wall;
A fitting wall is fitted into the fitting groove, and the second
The side face of the focus block is supported by the fitting wall.
And the height dimension of the second fitting wall is
A flyback transformer that is higher than the height of the fitting wall . 2. A depth dimension of a fitting groove of a focus block.
Is higher than the height dimension of the first fitting wall of the opening of the storage section.
The flyback transformer according to claim 1, wherein 3. The first fitting wall or the first fitting wall of the opening of the storage section.
A notch is provided in the fitting wall of No. 2
A projection provided on the outer periphery to be fitted into the notch.
1. The flyback transformer according to 1 . 4. The first fitting wall or the first fitting wall of the opening of the storage section.
2, a convex portion is provided on the fitting wall, and an outer peripheral portion of the focus block is provided.
2. A notch portion fitted to the convex portion is provided on the projection.
Flyback transformer. 5. The height of the focus block, a second fitting wall height dimension of the same height claims 1 wherein the flyback transformer of the opening of the housing portion. 6. The height dimension of the focus block is stored.
Height of the second fitting wall of the opening of the section
The flyback transformer according to claim 2 . 7. opening of the housing part, from the innermost end has a first fitting wall and a second fitting wall and the third fitting wall in order, of the second fitting wall Height dimension of focus block fitting groove
Not more than the depth dimension of the third fitting wall.
Claim 1 flyback transformer according supporting the side surface of the focus block Ri.