JP2000208339A - Coil bobbin of high-voltage transformer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To draw a plurality of high electric potential outputs from a single-coil bobbin. SOLUTION: In a coil 7, a coil bobbin 1 which is wound with a prescribed number of turns is divided into a plurality of sections with a split vane 4, with a primary coil part separated from an output coil part. Here, an upper surface 11a of a partition vane 10 protrudes above the outermost part of the coil 7 which is wound around a fist output coil part, while a groove is provided to a surface side, so as to secure creeping space distance between highvoltage coils with, the partition vane 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a split coil bobbin for a high-voltage output transformer.

[0002]

2. Description of the Related Art Conventionally, in a coil bobbin of a split type structure of a high-voltage output transformer, there is a coil bobbin in which a winding portion of a bobbin is divided by a blade and divided into a first section to an n-th section. Now, winding is performed in order from the side closer to the magnetic core (shaft core) of the first section. When a predetermined number of turns are wound, the magnetic head returns to the side closer to the magnetic core of the second section, and is wound again from there. . Then, a high potential difference is generated between the winding start end of the first section and the winding end end of the last section, and it is necessary to secure a creepage space distance between the windings. Further, it is necessary to secure a creepage space distance between the winding start and the winding end between the high potential windings even in the same section. For this reason, when trying to increase the number of outputs, such a single-output coil bobbin will be used in parallel with several stages. In this case, the number of turns is limited, and there is a disadvantage that it is difficult to obtain a predetermined output.

[0003]

As described above, in the coil bobbin of the high-voltage transformer, it is not possible to draw out a plurality of output ends from one coil bobbin. If the accommodation volume is prioritized, there is a problem that the number of windings becomes insufficient and a predetermined voltage cannot be obtained.

An object of the present invention is to provide a transformer which draws a plurality of output ends from one coil bobbin so that a predetermined creepage space distance can be secured between windings of high potential and a predetermined voltage is provided. And a coil bobbin for a high-voltage transformer, which solves the problem of accommodation volume.

[0005]

In order to solve the above-mentioned problems, a coil bobbin capable of winding a coil wire a predetermined number of times is divided into a plurality of pieces by separating blades to form a primary winding. In a coil bobbin of a high-voltage transformer separated into a wire portion and an output-side winding portion, this can be achieved by dividing the output-side winding portion into a plurality of sections by partitioning vanes. Further, as set forth in claim 2, the partition blade is configured such that an upper surface thereof is protruded from an outermost portion of a coil wire wound around the first output winding portion, and has a groove on a surface side. That can be achieved. Further, as set forth in claim 3, the groove provided on the surface side of the partitioning blade can be achieved by a tapered groove having a taper that becomes shallower in the core direction. Further, as described in claim 4, the groove provided on the surface side of the partition blade can be achieved as a groove having the same depth in the core direction.

[0006]

FIG. 1 is a perspective view showing a first embodiment of the present invention. 2 is a sectional view taken along line AA of FIG. 1, FIG. 3 is a sectional side view of a main part of the partition blade of FIG. 2 viewed from the direction of arrow B, and FIG. It is a partial plan view. FIG. 5 is a sectional view taken along line D-D of FIG.
In FIGS. 1 to 5, reference numeral 0 denotes a bobbin around which a coil is wound. The bobbin 0 has a plurality of pins 1a, 1b, 1c,
1d... Are arranged, and a plurality of divided blades 4a, 4b, 4c. Adjacent divided blades are connected by a winding core 5 to form winding portions 6a to 6n so that the coil wire 7 can be divided and wound. In addition, each divided blade 4a,
4b, 4c... Have V-shaped notches 8 (8a, 8b, 8c) for winding the coil wires 7 around the adjacent winding portions 6.
9 (9) for extending the coil wire 7 between the divided blades.
a, 9b, 9c). Reference numeral 10 denotes a partition blade. The partitioning blade 10 is located closer to the first end 2
And an output winding adjacent to the output winding, such as a second output winding farther from the terminating portion 2. The partition blade 10 includes a tapered groove 11 (FIGS. 3 and 5) and a concave portion 12 whose surface side is tapered at a position substantially corresponding to the V-shaped cutout portion 8 or the concave portion 9 of the divided blade 4.
The upper surface 11a of the tapered groove 11 is configured to protrude from the outermost portions of the winding portions 6c, 6b, and the coil wire wound around the winding portion 6a.

Now, after winding the input end (or output end) around the pin 1e and winding a predetermined number of turns around the winding portion 6e, the output end (or input end) is fixed to the pin 1g to form a primary winding.
On the other hand, the input terminal (or the output terminal) is wound around the pin 1b,
After a predetermined number of turns are wound around the winding portion 6a, the winding portion 6b is moved to the winding portion 6b through the V-shaped notch portion 8a, and a predetermined number of turns are wound.
Further, through the V-shaped notch 8b, the winding 6c is formed.
After a predetermined number of turns, the output end (or input end) is fixed to the pin 1c via the recess 9b and the recess 9a to obtain the first output. That is, the first output winding closer to the terminal 2. The first output winding entered from the pin 1b is wound in series with three windings, namely, the winding 6a, the winding 6b, and the winding 6c. Therefore, the potential of the input terminal (or output terminal) pin 1b and the output terminal (or input terminal)
The potential difference from the potential of the pin 1c is 1500 volts if there is a potential difference of 500 volts in one winding portion.
The number of windings to be wound in series may be arbitrarily selected depending on a desired output voltage and how many volts can be obtained with one winding.

Next, the second output winding, which is farther from the terminal end portion 2, has its input end (or output end) wound around the pin 1a and passes over the V-shaped notches 8a, 8b to form the partitioning blades 10. A predetermined number of turns are wound from the tapered groove 11 to the winding portion 6d. At this time, if the tapered groove 11 provided with a groove on the surface side of the partition blade 10 has the same height as the V-shaped notch, the coil wire from the input end (or the output end) and the winding portion 6c, The creepage space distance between the winding portion 6b and the outermost coil wire wound around the winding portion 6a cannot be secured,
It leaks during that time. Therefore, in the present invention, the upper surface 11a of the tapered groove 11 is formed so as to protrude further than the outermost portion of the winding portion 6c, the winding portion 6b, and the coil wire wound around the winding portion 6a. Receiving the coil wire from the end) on the upper surface 11a, the winding portion 6
c, the winding part 6b and the coil wire wound around the winding part 6a are secured along the outermost surface of the coil wire to solve the problem of leakage. Next, a predetermined number of turns are wound around the winding portion 6d. At this time, if there is no tapered groove 11 on the surface side, the coil wire from the input end and the outermost portion wound around the winding portion 6d have a high pressure. The creepage space distance between the coil wire and the coil wire cannot be secured, and a leak occurs between them. Therefore, in the present invention, the taper groove 11 is provided, the coil wire from the input end is dropped into this taper groove, and then wound around the winding portion 6d, whereby the coil wire from the input end and the winding portion 6d are wound. This problem is solved by securing the creepage space distance between the outermost coil wire and the outermost coil wire. When the predetermined number of turns have been wound around the winding portion 6d, the output end (or input end) is inserted into the pin 1 through the recess 9d.
h to complete the second output winding. Also, the number of winding portions of the second output winding to be wound in series may be arbitrarily selected depending on a desired output voltage and how many volts can be obtained by one winding portion. Further, it is natural that the number of outputs can be arbitrarily selected as desired.

FIG. 6 shows a second embodiment of the present invention, and is a plan view of a main part of a partition blade corresponding to a plan view seen from the direction of arrow C in FIG. FIG. 7 is a cross-sectional view of FIG.
It is sectional drawing. 6 and 7, reference numeral 12 denotes a partition blade corresponding to the partition blade 10 in FIGS.
Is a surface-side groove provided on the surface side of the partition blade. In the second embodiment, the surface-side groove 13 is not a tapered groove as in the first embodiment, but a groove of the same depth from the upper surface 13a to the core 5. Now, a case where the partition blades 12 are used in place of the partition blades 10 will be described with reference to FIG. 1.
a, 8b via the upper surface 13a of the partitioning blade 12 to form a winding portion 6c, a winding portion 6b, and a winding portion 6a.
The creepage space distance with the coil wire wound around is secured to solve the problem of leakage. Next, a predetermined number of turns are wound around the winding portion 6d. At this time, the surface side groove 13 has a creeping space distance between the coil wire from the input end and the outermost coil wire wound around the winding portion 6d. Has also solved this problem.

[0010]

According to the present invention, a coil bobbin capable of winding a coil wire a predetermined number of times is divided into a plurality of pieces by separating blades.
In a coil bobbin of a high-voltage transformer, which is separated into a secondary winding part and an output winding part, the output winding part is separated from the upper surface of the blade by the upper surface of the coil wound around the first output winding part. The input end (or the output end) wound around the second output winding part by being configured to protrude from the outer part.
The creepage space distance between the coil wire from the coil and the outermost portion of the coil wire wound around the first output winding portion can be secured to solve the problem of leakage. Further, the groove provided on the surface side of the partitioning blade is a tapered groove that is tapered to become shallower in the direction of the core or a groove of the same depth in the direction of the core. Thus, the creepage space distance between the outermost coil wire wound around the same winding portion and the outermost coil wire can be secured, and the problem of leakage can be solved. This makes it possible to secure a predetermined creepage space distance between high-potential windings, and to obtain a predetermined voltage, even with a transformer that extracts a plurality of output ends from one coil bobbin. In addition, the problem of the storage volume was solved. In addition, since the same coil bobbin can be used, the winding on the primary side and its driver circuit can be used in common, and only one coil is required.
An inexpensive transformer can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

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

FIG. 3 is a sectional side view of a main part of the partition blade of FIG. 2 viewed from the direction of arrow B;

FIG. 4 is a main part plan view of the partition blade of FIG. 2 viewed from the direction of arrow C;

FIG. 5 is a sectional view taken along the line DD of FIG. 4;

FIG. 6 shows a second embodiment of the present invention.
5 is a plan view of a main part of the partition blade corresponding to a plan view seen from the direction of arrow C of FIG.

FIG. 7 is a sectional view taken along the line EE of FIG. 6;

[Explanation of symbols]

 0 bobbin 1 pin 2, 3 terminal part 4 divided blade 6 winding part 7 coil wire 8 V-shaped notch 9 concave part 10, 12 partitioning blade 11, 13 groove 11 part

Claims (4)

[Claims] 1. A coil bobbin of a high-voltage transformer in which a coil bobbin capable of winding a coil wire a predetermined number of times is divided into a plurality of parts by separating blades and separated into a primary winding part and an output winding part. A coil bobbin for a high-voltage transformer, wherein a plurality of outputs are enabled by dividing a wire portion into a plurality of pieces by partitioning blades. 2. The partition vane has an upper surface protruding from an outermost portion of a coil wire wound around a first output winding portion, and has a groove on a surface side. The coil bobbin for a high-voltage transformer according to claim 1. 3. The high-voltage transformer according to claim 1, wherein the groove provided on the surface side of the partition blade is a tapered groove having a taper that becomes shallower in a core direction. Coil bobbin. 4. The coil bobbin for a high-voltage transformer according to claim 1, wherein the grooves provided on the surface side of the partition blade are grooves having the same depth in the core direction.