JPH0334643B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention has the advantage of increasing the withstand voltage without enlarging the form.
Concerning electrical winding components with increased efficiency.

Examples of electric winding parts include chiyoke coils and transformers, and in the present invention, the withstand voltage and efficiency of such electric winding parts are improved by applying a special winding.

Most of the electrical winding parts that have been widely known in the past are wound as shown in FIG.

That is, FIG. 1 shows an example of a chiyoke coil, which comprises an iron core 1 having flanges 2, 3 and a winding part 4, a multilayer coil 5 formed by winding the winding part 4, It is comprised of terminal pins 6 and 7 implanted on the outside of the flanges 2 and 3. When forming the coil 5, first, the winding pitch is advanced from the flange 2 to the flange 3, and the first layer is directly wound on the surface of the winding 4 over the entire area between the flange parts. Next, the winding pitch is advanced in the opposite direction to the above to wind the wire from flange 3 to flange 2 to form a second layer around the first layer, and further from flange 2 to flange 2. 3 to form a third layer around the second layer. Thereafter, the coil 5 is formed by winding the fourth layer, the fifth layer, and so on in the same manner.

Now, in the above-mentioned Chiyoke coil, the induced electric power acts most strongly on the first layer coil closest to the winding part 4, and as it moves away from the winding part 4 in the second layer, third layer, etc. The effect of electric power gradually decreases. This causes a potential difference and distributed capacitance between the windings, especially between the layers.

As is well known, the above-mentioned distributed capacitance acts not only to lower the Q of the coil but also to increase the line-to-line potential difference, so if the voltage applied to the choke coil is increased, the above-mentioned potential difference increases, inducing corona discharge and dielectric breakdown. do.

In the above-mentioned Chi-Yoke coil, the wire is wound directly on the iron core, but similar problems occur with other winding portions such as those with a bobbin interposed therebetween and transformers.

The purpose of the present invention is to propose an electric winding component that reduces the above-mentioned potential difference and distributed capacitance as much as possible to improve withstand voltage and efficiency. The wire area is divided into a plurality of sections, and each section has a coil in which a circular conductor wire is wound, and the coil of the first section sandwiches the surface of the winding part of the iron core or bobbin and the inner surface of the flange at right angles. The coil cross-section layer is formed as a right-angled triangular coil cross-section layer with two sides, and the coils in each section after the second section are wound along the diagonal sides of the right-angled triangular coil cross-section layer, and the boundaries of the coils in each section are The present invention proposes a section-wound electrical winding component in which the wire is wound obliquely with respect to the axial direction of the iron core or bobbin.

In electrical winding parts configured in this way, not only the line potential difference and distributed capacitance are reduced, but also the boundaries between the coils wound in each section are inclined, so there is no flange between the coils. Even if there is no winding, the wire can be wound reliably, and therefore the shape of the winding component does not become large.

Examples of the present invention will be described below.

FIG. 2 shows an example in which the present invention is implemented as a chiyoke coil. In this figure, the iron core 1 is the same as that of the conventional example described above, but the coil 8 is wound in sections according to the sections a to d shown in the figure.

That is, in this embodiment, the winding portion 4 is divided into four sections a to d, and the coil 8 is formed by winding each section.

When winding, first, multilayer winding is performed for section a, then multilayer winding is performed for section b, and then multilayer winding is similarly performed for sections c and d in this order.

3 to 5 are partially enlarged views showing the winding process of the above-mentioned segmental winding.

First, referring to FIG. 3 which shows the winding of section a, the first layer to be wound on the surface of the winding part 4 advances the winding pitch in the direction away from the flange part 2 until it reaches the boundary of section a. wire, then transfer the winding to the second layer.
At this time, the winding pitch is advanced in the direction of the flange 2 so that the first winding of the second layer does not protrude from the boundary of section a, and the second layer coil wound around the first layer is moved. Form. Next, the winding is transferred to the third layer and wound in the range of section a, and the fourth and fifth layer coils are formed in the same manner. The cross-sectional layer of the coil of section a wound as described above becomes a right triangle whose two sides are the surface of the winding part 4 and the inner surface of the collar 2.

In this example, the fifth layer coil of section a is shown in the figure.
Therefore, the winding is divided into sections b from this al position.
Move to the first layer first winding position bl ₁ .

As shown in Figure 4, the winding of section b is located at the winding position.
Advance the winding pitch to the left from bl ₁ and wind it to the boundary of section b to form the first layer coil, then move the winding to the second layer and advance the winding pitch to the right to form the second layer.
A layer coil is formed in the area of section b. continue,
The winding is transferred to the third layer and the winding pitch is advanced to the left to wind the wire. Thereafter, the winding is similarly carried out for the fourth and fifth layers along the diagonal side of the coil cross-section layer of section a. do.

The final winding position of section b is the final winding position of the fifth layer.
Since bl ₂ is obtained, the winding at this position bl ₂ is moved to the first layer first winding position cl ₁ of section c and wound as shown in FIG. Section c is the same as the winding method for section b described above, and the same applies to section d. Note that the arrows shown in FIGS. 3 to 5 indicate the direction of movement of the winding pitch.

The coil 8 is formed by winding the sections a to d as described above, and the winding start end and winding end of the coil 8 are fixed to the respective terminal pins 6 and 7.

Now, when the coil 8 is wound as described above, the fifth layer of section a and the first layer of section b are
The fifth layer of section C and the first layer of section c are directly connected, and the fifth layer of section c and the first layer of section d are directly connected to each other. The potential difference and distributed capacitance, that is, the potential difference and distributed capacitance appearing between lines are extremely small compared to conventional products. In addition, since the boundary between the coils wound in each section and the next coil to be wound is inclined, it is possible to reliably prevent winding collapse by providing the coils to be subsequently wound along this inclination. .

Next, FIG. 6 shows an example in which the present invention is implemented as a transformer, and this transformer is used as a trigger transformer included in a flash discharge light emitting device for photography. FIG. 7 is a side view of the transformer.

In these drawings, 1 is the same core as shown in FIG. 1, except that two terminal pins 6a and 6b are implanted in the collar 2. Further, 9 is a primary coil provided in section a, 10 is a primary coil installed in sections b, c,
This is the secondary coil installed at d. That is, category a
The primary coil 9 is wound in the winding method shown in FIG. 3, and the secondary coil 10 is wound in the same manner as shown in FIGS. 4 and 5 in sections b, c, and d. It is wound. Figure 8 shows the primary coil 9 of the above transformer.
This is an embodiment in which an electrically insulating member 11 is interposed between the secondary coil 10 and the secondary coil 10. The electrical insulating member 11 serves to increase the insulation strength between the primary coil 9 and the secondary coil 10. 9 and 10 show other embodiments of the trigger transformer described above. In this embodiment, the winding portion of the flanged bobbin 12 is divided into a plurality of sections a to d, and the primary coil 9 is divided into these sections. A secondary coil 10 is wound thereon. In addition, the primary coil 9
The winding of the secondary coil 10 is the same as that of the transformer shown in FIG. In the above transformer, the rod-shaped iron core 13 is inserted into the bobbin 12, and the terminal pins 6a, 6b, and 7 are implanted in the bobbin collar.

In this embodiment as well, an electrically insulating member as shown in FIG. 8 may be provided between the primary coil 9 and the secondary coil 10.

Even when the present invention is implemented as the trigger transformer described above, the line potential difference and distributed capacitance can be sufficiently reduced, and the withstand voltage of the transformer can be increased.
Furthermore, since the distributed capacitance is small, the Q of the coil becomes high and the transformer effect increases. Moreover, since the slope is provided between the coils in each section, each coil is partially overlapped. Therefore, there is no need for a flange or the like between the coils, so the transformer configuration is not expanded.

As mentioned above, in the electric winding component according to the present invention,
forming a right triangular coil cross-section layer in a first section;
Since the coil is wound around each section after the second section along the diagonal side of this coil cross-sectional layer, and the boundary between each coil is inclined, the circular diameter conductor can be secured without providing a collar between the coils. Therefore, the potential difference and distributed capacitance between the wires can be reduced without enlarging the form, and the withstand voltage and efficiency of the wire-wound parts can be increased. In particular, since the distributed capacitance is reduced, it is highly effective for use as electric winding components such as electric winding coils, transformers, etc. incorporated in high frequency circuits.

Note that the present invention can be applied to winding parts that are wound directly on an iron core or wound on a bobbin, and the number of sections to be wound can be increased or decreased as necessary. When winding these sections, the winding method is not limited to the method of reciprocating the winding pitch as shown in the above embodiment, but any winding method can be used as long as the coils can be inclined.
Furthermore, when implemented as a transformer, each section may be provided with tertiary or higher coils in addition to the primary and secondary coils.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a conventional Chi-Yoke coil, showing a winding method for the Chi-Yoke coil; FIGS. 2 to 10 show embodiments of the present invention; FIG. Figure 5 is a partially enlarged view showing the winding process of the above-mentioned Chiyoke coil;
The figure is a cross-sectional view of the trigger transformer, Figure 7 is a side view of the trigger transformer, Figure 8 is a cross-sectional view of the trigger transformer with an electrically insulating member provided between the primary coil and the secondary coil, and Figure 9 is a bobbin. FIG. 10 is a side view of the trigger transformer shown in FIG. 9. 1... Iron core, 4... Winding section, 8... Coil, 9
...Primary coil, 10...Secondary coil, 11...
Electrical insulation member, 12... bobbin, 13... iron core,
a~d...Category.

Claims (1)

[Claims] 1 The winding area of an iron core or bobbin with flanges at both ends is divided into a plurality of sections, and each section has a coil wound with a circular diameter conductor, and the coil of the first section is connected to the core or bobbin. It is formed as a right-angled triangular coil cross-sectional layer with the winding part surface and the inner surface of the flange as two sides sandwiching a right angle, and the coil of each section after the second section is formed along the diagonal side of the right-angled coil cross-sectional layer. A section-wound electrical winding component in which the coil is formed such that the boundary of each section of the coil is inclined with respect to the axial direction of the iron core or bobbin.