JPS60206011A - High voltage transformer - Google Patents

Abstract

PURPOSE:To eliminate crossing area of primary and secondary windings by providing a plurality of cut-away part along the axial direction at the external circumference of bobbin, leading the secondary winding between the leading portions of primary winding using said cut-away portion and moreover winding the secondary winding toward the upper layer from the lowest layer of the external circumference of bobbin. CONSTITUTION:The terminals 51, 52, 61, 62 are implanted to the area near to both ends of bottom surfaces of a bobbin 2 and the cut-away portions 101, 103 for inserting three leadout wires are provided in parallel in the axial direction to the left end portion of bottom surface of bobbin 2, while the cut-away portions 111, 112 to the right end portion thereof. Moreover, the cut-away portions 121-124 for inserting leadout wire which reach the lowest layer of external circumference of bobbin 2 are provided at the bottom portion of walls 2a1-2a4 for separation, and after the primary winding 3 connected to the terminal 51 of leadout wire 3a is guided into the groove 131 and then wound through the cut-away portion 101, the leadout wire 3a is connected to the terminal 52 through the cut-away portion 103. In addition, the secondary winding 4 of which leadout wire 4a is connected to the terminal 52 is also wound toward the upper layer from the lowest layer through each cut-away portion.

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a high voltage transformer in which the turns ratio of the primary winding to the secondary winding is 1:n (where n is a plurality of turns). line 8
This invention relates to improvements in bobbin structure for loading.

[Technical background of the invention]

2. Description of the Related Art Conventional high voltage transformers include those shown in FIGS. 1 to 3, for example.

FIG. 1 shows a perspective view of the high voltage transformer. This high voltage transformer consists of a tripod magnetic core 1 and this magnetic core 1.
A cylindrical insulating bobbin 2 is attached to the outer periphery of the central leg of
and a secondary winding 4, and a primary winding 35 installed on the bottom of the bobbin 2.
Line 3 and secondary volume FI! The bottle-shaped terminals 51.5□, 61.62 and J to which the sunrise wires 3a and 4a of 4 are connected, respectively
, is composed of

Fig. 2 shows the equivalent circuit of the high voltage i-lance, and the turns ratio of the primary winding 3 and the secondary winding $24 is 11:n.
(where n is a plurality of times), and one ends of both windings 3.4 are connected to each other via terminals 52.62 and held at a common (eg, ground) potential.

Figures 3 (1), (2), and (3) are explanatory diagrams of the bobbin 2 wound with the winding wire 3.4, where (1) is an external perspective view, and (2) is the same side view. The figure and (3) are A of the same figure (2).
- It is an enlarged cross-sectional view taken along the line A.

As shown in FIG. 3, the cylindrical bobbin 2 has separation walls 2a1 to 2a1 extending approximately orthogonally to the axial direction of the outer periphery of the cylindrical bobbin 2.
A plurality of partition walls 2 and 4 are provided as separation walls 2a.

The primary winding 3 and the secondary winding 4 are separated by the separation walls 282 to 284, and the secondary winding 144 is separated by the separation walls 282 to 284. This IC not only has excellent insulation between the primary winding FJ3 on the low voltage side and the secondary winding 4 on the high voltage side, but also
When the next winding 4 is multi-layered, the line-to-line voltage of the winding can be kept lower than in the case where there is no separation wall, so the reliability of the dielectric strength of the winding is improved.

[Problems with background technology]

However, in conventional high voltage transformers, the third
As shown in Figure (2), the secondary winding 4 crosses the primary winding 3, so the secondary winding 4 covered with an insulating material is roughly covered with an insulating cove such as a silicone chip. Primary winding 3 and 2
It is necessary to ensure sufficient insulation V1 between the next winding 4.
In addition, as shown in Figure 3 (3),
When the secondary winding 4 is wound in multiple layers, the lead wire 4a of the secondary winding 4, for example, falls along the separating wall 281 after crossing the separating wall 2a1, and extends over the outer circumferential surface of the bobbin. Since the windings are sequentially wound from the lowest layer to the upper layer, the upper layer winding 4
Since the wire comes into contact with the lead wire 4a and a high voltage is applied at this contact point, it is necessary to provide a means for ensuring sufficient insulation, which is disadvantageous and inconvenient.

[Purpose of the invention]

The present invention was made in order to eliminate the drawbacks of the prior art as described above, and it is possible to easily and accurately improve the insulation between the primary winding and the secondary winding, and between the secondary windings. The purpose is to provide high voltage transformers.

[Summary of the invention]

In order to achieve the above objects, the present invention provides a method in which the secondary winding is led out between the leading ends of the primary winding, and the winding start of the secondary winding is started from the lowest layer on the outer periphery of the bobbin. The feature is that a notch is provided along the axial direction of the outer circumference.
Ru.

[Embodiments of the invention]

The present invention will now be described in detail with reference to the accompanying drawings. In the following drawings, the same elements as those in FIGS. 1 to 3 are designated by the same reference numerals.

FIG. 4 is a perspective view of the high voltage transformer according to this embodiment. The difference between this high voltage transformer and the one shown in FIG.
1.62 is planted so that it is installed horizontally, and the sunrise wires 3a and 4a of the primary winding 3 and the secondary winding 4 are inserted into the bottom of the bobbin 2 along the axial direction. The reason is that multiple notches are provided for this purpose.

That is, FIGS. 5(1) to 5(6) are for explaining the bobbin 2, and FIG. 5(1) is a perspective view of the bobbin 2, and FIG.
2) is the same plan view, the same figure (3) is the same front view, the same figure (4) is the same left side view, the same figure (5)' LL is the same side view, and the same figure (
6) is an enlarged cross-sectional view taken along the line 8-13 in FIG. Fifth
As shown in the figure, there are terminals 5 near both ends of the bottom of the bobbin 2.
1, 52, 61, and 62, respectively, and as shown in Fig. 5 (5), there are three common cutouts for the lead wire types in parallel in the axial direction at the left end of the bottom surface of the bobbin 2. Missing 1o1.1
02.103 is the right end of the bottom surface of the bobbin 2 (2 is the notch 111. for inserting two lead wires in parallel in the axial direction).
112 are provided respectively. Furthermore, the separation wall 2a1~
At the bottom of 284, there are cutouts 121, 122, 123, and 12 that reach the lowest layer of the outer periphery of the bobbin and are compatible with the lead wire types.
4 is provided along the axial direction of the bobbin 2. In addition, in FIG. 5 (5), the left end of the bobbin 2 and the separation wall"
The annular groove formed by Al is the first groove 131, similarly, the second groove 132 is between the walls 2,1 and 2,2, the third groove 133 is between the walls 282 and 2a3, the wall 2, Between 3rd and 2nd and 3rd is the 4th
The space between the groove 134° wall 2a3 and the right end of the bobbin 2 is named a fifth groove 135.

The lead wire 3a at one end of the primary winding 3 is connected to the terminal 5.
connected to the first tii 13 through the notch 101
After being guided into the inside of the wire 1 and wound approximately once in the back direction, the wire 3 a is pulled out through the notch 103 and the lead wire 3 a is connected to the terminal 52 . Furthermore, the lead wire 4a at one end of the secondary winding 4 is connected to the end -i''52, and the notch 10 located between the notches 101 and 103 is connected to the notch 10.
It is guided into the second groove 1 132 through the notch 121 of the separating wall 2 adjacent to the bobbin, and is wound a predetermined number of times in a multilayer structure from the bottom layer to the first layer on the outer periphery of the bobbin. The secondary winding 4 of the soil layer C is wound through the notch 122 into the third groove 14133 and wound from the lowest layer to the upper layer, and then similarly into the fourth and fifth grooves 13 and 135. After being wound around the wire, it is pulled out through the notch 111, and the lead wire 4a is connected to the terminal 61.

□ In the high voltage lance of this embodiment configured as described above, the sunrise wire 4a of the secondary winding 4 is connected to the lead wire 4a of the primary winding 3 by passing between the lead wires 3a, 3a. Since the primary winding 3 and the secondary winding 4 are introduced into the groove 132 of No. 2, the intersection point between the primary winding 3 and the secondary winding 4 is formed, which improves the insulation properties of both the windings 3 and 4. However, the secondary winding 124 wound in the second to fifth grooves 132 to 135 extends through the notches 281 to 2a4 to the lowest layer of the adjacent 11''J. Since the lead wire 4a is wound from the upper layer to the upper layer, the lead wire 4a does not come into contact with the secondary winding 4 of the soil layer, and therefore the insulation between the secondary windings 4 is improved.
゛103.111.112.12~゛124 in small bottle 2
Since it is provided on the bottom surface of the transformer, the crossover wires of the windings 3 and 4 are hidden below, which prevents accidents such as disconnection during wiring work of the high voltage transformer, and also provides an aesthetically pleasing product.

In the above embodiment, the number of 131 to 135 of the bobbin 2 is five, but this number may be appropriately selected depending on the winding ratio, thickness, etc. of the secondary winding 14.

Also notch: 10~10. 11. 112°1 3
1 Instead of providing 12 to 124 on the bottom surface of the bobbin 2, they may be provided on the side or top surface.

〔Effect of the invention〕

As explained above, according to the present invention, a plurality of notches are provided on the outer circumference of the bobbin along its axial direction, and the secondary winding is inserted between the openings of the primary winding using the notches. Take out the winding and insert the secondary winding from the bottom layer of the bobbin outer periphery.
Because it is wound around the F layer, there is no crossing point between the primary winding and the secondary winding, and the insulation between them can be easily and precisely improved.Moreover, the secondary winding is wrapped around the bobbin outer circumference. Since the wires are wound from the bottom layer to the top layer of the secondary winding, there is no contact with the lead wire of the first layer of the secondary winding, and therefore the insulation between the secondary windings can be easily and accurately improved. .

[Brief explanation of drawings]

Figure 1 is a perspective view of the conventional high voltage 1 to lance, Figure 2 is an equivalent circuit diagram of Figure 1, Figures 3 (1), (2), and (3) are explanatory diagrams of Figure 1; Fig. 4 is a perspective view of a high voltage transformer according to an embodiment of the present invention, and Fig. 5 (1), (2), (3), (
4), (5), and (6) are explanatory diagrams of FIG. 1...Magnetic core, 2...Bobbin, 2a1 to 2a4...
Minute wall, 3...Primary winding, 3a...Lead wire, 4
...Secondary winding;:, 4 a-0 output line, 5. 5.
6. 62 ”・k: End, 1 2 1 101~103.11 .112.121 112・
...Notch, 13-13. ...It/Ia1 Applicant's agent: Isamu Inomata Figure 1 Figure 2 Figure 0 Figure 3 (1) Figure 3 (2) Figure 3 (3) Figure 4 Figure 5 (+) Figure 5 (2) Diarrhea Diagram 5 (3)

Claims (1)

[Scope of Claims] A magnetic core, a bobbin having a cylindrical shape attached to the outer periphery of the magnetic core, and having a plurality of separation walls arranged in the axial direction of the cylindrical outer periphery in a direction substantially orthogonal to the axial direction; A primary winding and a secondary winding having a turns ratio of 1:n (where n is multiple times) wound around the outer periphery of the bobbin with the low pressure side and the high pressure side separated by the separation wall, respectively, and the high pressure side. In the high voltage lance comprising a wire, the secondary winding is led out between the leads of the primary winding, and the winding start of the secondary winding is from the lowest layer of the outer periphery of the bobbin. A high voltage transformer characterized in that a plurality of notches are provided along the axial direction on the outer periphery of the bobbin so that the bobbin starts from the outer circumference of the bobbin.