JPH0334896Y2 - - Google Patents

Description

[Detailed explanation of the idea] "Industrial application field" This invention relates to a coil.

``Prior Art'' A coil in which glass fiber thread (glass yarn) is wound onto the winding surface of the bobbin has been proposed in order to hold down the extraction terminal portion and reinforce the coil.

FIG. 2 shows the external appearance of this type of coil after winding is completed, with the winding wire being wound around the bobbin 11, and the first and second wires connected to the winding start and winding ends of the winding wire. - Insulation tubes are installed on the ground wires 12 and 13.
The tab 14 is fitted and led out as an external connection terminal, and the whole is wrapped with an insulating tape 15 for finishing.

FIG. 3 shows a state before the insulating tape 15 is wound in FIG. A first winding portion 21 is formed, and a second winding portion 22 is formed by winding the end portion 17 of the winding around a lead wire 13 having a wider diameter than the winding.

FIG. 4 is an enlarged view of the main part of FIG. 3. An insulating sheet 23 is wrapped and fixed on the winding, and the winding start end 16 of the winding is covered with an insulating sheet for leading out. 24 and led out to the surface. The lead-out winding start end 16 is connected to a first winding having a diameter wider than that of the winding.
A first winding portion 21 is formed by winding the lead wire 12 around the end of the lead wire 12 . On the end side of the bobbin 11 of this first winding part 21,
The winding start end 16 of the winding wire is
It is soldered and fixed to the first lead wire 12, and a first soldered portion 26 is formed.

On the other hand, the winding end portion 17 of the winding wire is wound around the second lead wire 13 to form a second winding portion 22.
On the end side of the bobbin 11 of this second winding part 22, the winding end part 17 is fixed to the second lead wire 13 by soldering, and a second soldering part 27 is formed. Ru.

First soldering part 26 and first wrapping part 2
1, the second soldering portion 27, and the second winding portion 22, and the first and second lead wires 12, 13, the winding start end 16 of the winding and A glass fiber thread 20 called ordinary glass yarn is wound and fixed between the winding end portions 17.

The winding of the glass fiber thread 20 is completed, and the attachment of the external lead-out terminal portion by the first and second lead wires 12 and 13 at the winding start end 16 and winding end end 17 is completed. This is done for the coil. To the coil by the glass fiber thread 20,
The winding start end 16 and the winding end end 17 are pressed and fixed to the first and second lead wires 12, 13, and the peripheral surface of the coil is reinforced.

The first and second lead wires 12 and 13 are connected to each other by winding the glass fiber thread 20.
is fixed to the coil, and furthermore, it is possible to prevent the coil from accidents such as being hit by external foreign objects.

In addition, the coil may be placed in a relatively high temperature atmosphere under various usage conditions, and although the coil itself is constructed to have heat resistance, the glass fiber thread 22 wound around the circumference of the coil The coil itself also has heat resistance, and the entire coil is configured to meet heat resistance conditions when used in such a high temperature atmosphere.

5 and 6 show the winding end 1 of the winding.
7 is wound around the second lead wire 13 to form a second winding part 22, and a second soldering part 27 formed at the end of this second winding part 22. 20 winding states are schematically displayed.

As shown in the figure, the second lead wire 13 has a larger diameter than the winding wire, so it is disposed on the winding wire of the bobbin 11 so as to protrude from the winding surface. A winding is wound, and a glass fiber thread 20 is tightly wound over the second lead wire 13.

In this way, since the glass fiber thread 20 is wound with the outside of the second lead wire 13 serving as the apex, the second winding portion 22
It will be in a state where it is strongly pressed.

Similarly, on the winding start end 16 side of the winding, the first winding section 21 is wrapped around the glass fiber yarn 20.
is strongly pressed.

"Problems to be Solved by the Invention" In the conventionally proposed coils, as mentioned above, the winding start end 16 and the winding end end 1
7 are the first and second lead wires 12, 1, respectively.
The first and second winding parts 21 and 22, which are formed by winding around the glass fiber thread 3, are strongly pressed together by the glass fiber thread 20.

In this case, the first and second soldering parts 26 and 27 formed on both end sides of the bobbin 11 of the first and second winding parts 21 and 22 are covered with a solder layer, and the winding itself is protected. However, the first and second soldering parts 21 and 22
The portions other than the second soldering portions 26 and 27 are simply windings wound around the lead wires.

Therefore, the first and second winding parts 21 and 2
In the parts other than the first and second soldering parts 26 and 27 of 2, the winding is deformed and crushed by the glass fiber thread 20 that is tightly wound from the outside, and furthermore, the glass fiber thread 20 is As a result, scratches may be formed on the winding.

If the windings become crushed, deformed, or scratched, for example, when the coils are used in relays and are used in environmental conditions with relatively wide temperature fluctuations, heat generated by high and low temperature cycles can cause The stress may be superimposed on the stress caused by the glass fiber thread 20, causing the winding to break. Further, if the winding is deformed into a crushed state or has scratches, the winding may be blown out if current is continuously passed through the coil for a long time. Further, if the winding is deformed or damaged, the winding may break when the coil is used in an atmosphere with a lot of external vibration.

This idea was made in view of the above-mentioned current situation of this type of coil, and its purpose is to eliminate the pressing of the winding wire by the glass fiber thread, and to avoid deformation and scratches of the winding wire caused by the glass fiber thread. The object of the present invention is to provide a coil whose windings will not break due to the application of thermal stress due to high and low temperature cycles, continuous energization for a long time, external vibrations and shocks.

"Means for solving the problem" In this invention, a winding wire is wound around a bobbin, and the winding start end and winding end end of this winding wire are connected to the ends of the first and second lead wires. , respectively, to form first and second wrapped portions.

A portion of these first and second winding parts,
The first and second lead wires are soldered on both end sides of the bobbin to form first and second soldered parts, respectively, and the winding parts following these soldered parts are connected to the first and second lead wires, respectively. This is the second service loop section.

In this invention, the glass fiber thread is wound on the winding wire wound around the bobbin except for the first and second service loop parts other than the first and second soldered parts.

"Operation" In this invention, from the winding wound on the bobbin,
A glass fiber thread is wound around the first and second service loop parts other than the first and second soldering parts. Therefore, at the winding start end and the winding end end of the winding wires wound around the first and second lead wires that are arranged to protrude from the circumferential surface of the bobbin,
Glass fiber threads are not pressed directly.

For this reason, the winding start end and winding end end of the winding wire are not locally strongly pressed by the glass fiber thread, and the winding wire is not deformed or damaged.

Therefore, depending on the usage condition of the coil, the generated thermal stress may be combined with the stress caused by the glass fiber thread, causing the winding to break at deformed or scratched parts, or
When the coil is energized for a long time, the winding will not melt at deformed or damaged parts. Furthermore, even if the coil is used in an environment with a lot of external vibration, the winding will not be deformed or damaged, so the winding will not break due to external vibration or impact.

``Example'' The coil of this invention will be described in detail below based on an example using the drawings.

FIG. 1 is a front view showing the construction of the main parts of an embodiment of the coil of this invention, with the finishing insulating tape removed.

Although not shown, a winding wire is wound a predetermined number of times around the winding surface of the bobbin 11, an insulating sheet 23 is wrapped around the winding wire, and a winding start end 1 of the winding wire is wound around the winding surface.
6 is guided on an insulating sheet 24 for leading out and led out to the surface.

The lead-out winding start end 16 is connected to the first lead wire 1 into which the insulating tube 14 is fitted and led out.
2, and a first wrapped portion 21 is formed at this wrapped portion.

On the end side of the bobbin 11 of this first winding portion 21, the winding start end 16 of the winding wound around the first lead wire 12 is connected to the first lead wire 12.
The first soldered portion 26
is formed.

On the other hand, the end portion 17 of the winding is connected to the insulation tube.
The lead wire 14 is inserted into the lead wire 14 and wound around the end of the second lead wire 13, and this wrapped portion becomes a second wrapped portion 22. On the end side of the bobbin 11 of the second winding section 22, the winding end 17 of the winding wound around the second lead wire 13 is soldered to the second lead wire 13. ,
A second soldering portion 27 is formed.

The first and second winding portions 21 and 22
and the area other than the second soldering parts 26, 27, that is, the service loop part where the winding is only wound around the first and second lead wires, A glass fiber thread 20 is wound around an insulating sheet 23 and an insulating sheet 24 for leading out from above the winding between the lead-out portions of the lead wires 12 and 13.

At the first and second soldering portions 26 and 27, the windings are wound around the wide diameter first and second lead wires 12 and 13, which are arranged so as to protrude from the winding surface.
Since the winding start end 16 and winding end 17 of the winding wire are covered with a solder layer, even if the protruding portion of the glass fiber thread 20 is strongly pressed, the winding wire may be deformed or the winding wire may be damaged. No scars will form.

As described above, the first and second wrapping portions 21,
The glass fiber yarn 20 is not wound around the service loop portions other than the first and second soldering portions 26 and 27 of 22. Therefore, in these service loop portions, no pressing force is applied to the windings by the glass fiber threads 20, so that the windings are not deformed or damaged. In the embodiment shown in FIG. 1, the total length of the bobbin 11 is 16 mm, and the lengths of the soldered portions of the first and second winding portions 21 and 22 where the glass fiber thread 20 is not wound are, respectively. 2mm, these glass fiber threads 2
The length of the wound portion of the glass fiber yarn 20 sandwiched between the portions where the wire 0 is not wound is 3 to 4 mm.

As shown in FIG. 1, an insulating tape (not shown) is wrapped to cover the entire surface of the winding surface where the glass fiber thread 20 has been wound.

In this invention, the glass fiber yarn 20 is directly placed on the winding.
In particular, the winding wire is not wound in contact with the winding wire, and the winding wire wound around the wide diameter lead wire protruding from the winding surface, that is, the first and second service through wires. The soldering end portion is not pressed strongly by the glass fiber thread 20, and stress on the soldered end portion due to tension or twisting of the winding wire is alleviated, thereby preventing accidents such as wire breakage.

Therefore, the winding start end 16 and winding end 17 of the winding are not deformed or the winding is damaged by the pressing of the glass fiber thread 20. For this reason, even if the coil is used in a temperature atmosphere where the width of temperature change is relatively large and thermal stress is generated, the stress due to the pressing of the glass fiber thread is not generated, so the thermal stress is not caused by the glass fiber thread. The winding of the coil will not break due to stress.

In addition, there are no deformed or damaged parts of the winding due to the pressing of the glass fiber thread, so even if the coil is used with electricity continuously applied for a long time, the winding will not be fused from the deformed or damaged parts. There's nothing wrong with that.

Furthermore, even if the coil is used in an environment where there is constant vibration, there are no deformed or damaged parts of the winding, which greatly reduces the chance of the winding breaking due to external vibration or impact. do.

"Effects of the invention" As explained in detail above, according to this invention, the winding start end and winding end end of the winding wire are not deformed or damaged by the glass fiber yarn during the manufacturing process. Even if the coil is used in a temperature atmosphere where there are large temperature changes and thermal stress occurs, even if the coil is used in a energized state for a long period of time, or even if the coil is used in an environment where the coil is constantly vibrating. , it becomes possible to provide a coil whose windings are not cut or fused.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the configuration of the main parts of an embodiment of the coil of this invention, FIG. 2 is a perspective view showing the appearance of this type of coil that has been proposed in the past, and FIG. FIG. 4 is a perspective view showing the state of the coil with the insulating tape removed, FIG.
FIG. 6 is an enlarged view showing the configuration of the winding section in the figure. FIG. 6 is a view showing the winding state of the glass fiber thread at the winding end of the winding of this type of coil that has been proposed in the past. FIG. FIG. 3 is an enlarged view showing the configuration of a winding part in an embodiment of the coil of the invention. 11...Bobbin, 12...First lead wire, 1
3...Second lead wire, 14...Insulation tube,
15... Insulating tape, 16... Winding start end, 1
7... Winding end end, 20... Glass fiber thread, 2
DESCRIPTION OF SYMBOLS 1...First winding part, 22...Second winding part, 23, 24...Insulating sheet, 26...First winding part
soldering part, 27... second soldering part.

Claims (1)

[Claims for Utility Model Registration] A winding wire is wound around a bobbin, and a winding start end and a winding end end of the winding wire are wound around ends of first and second lead wires, respectively. 1st and 2nd
a part of the winding part is soldered to the first and second lead wires on both end sides of the bobbin to form a first and second soldering part, respectively; The winding portions following these first and second soldering portions are referred to as first and second service loop portions, respectively, and excluding these first and second service loop portions, the above-mentioned A coil characterized by a glass fiber thread being wound on top of the winding.