JPH0419764Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a winding frame for a coil used as a small bobbin, reel, or spool of an electromagnetic coil.

<Conventional technology> Conventionally, for electronic components such as electromagnetic coils,
There are coil wires (striated conductors such as enameled wires) wound in multiple layers around the body of a bobbin, and the beginning and end of the coil wire taken out and used as lead wires. .

However, simply extracting the coil wire as a lead wire is weak and insufficient in terms of insulation and mechanical strength (e.g. tensile strength), so it is necessary to cover it with a reinforcing sleeve or tube for reinforcement. It is common practice to form

<Problems to be Solved by the Invention> However, when the above-mentioned reinforcing coating is applied, the lead wire portion naturally becomes larger (thicker) in outer diameter than the coil wire by the amount of the reinforcing coating. Therefore, the lead wire portion with the reinforcing coating cannot be wound into the bobbin body as it is. This is because, if the lead wire portion with the reinforcing coating is wound together with the coil wire in an aligned winding, bank winding, etc., a step will be created between the upper and lower winding layers at the beginning and end of the winding, resulting in irregular winding.

For this reason, conventionally, the large diameter lead wire portion is taken out to the outside without being wound around the body of the bobbin. For this reason, the integrity of the lead wire portion and the bobbin is weak, and stress tends to concentrate at the boundary between the reinforcing coating base of the lead wire and the coil wire, resulting in electrical
There was a problem that it had insufficient mechanical strength and was easily damaged.

<Problems to be solved by the invention> The present invention was devised in view of the above-mentioned problems of the conventional technology. It is an object of the present invention to provide a coil winding frame which is provided with a lead wire groove in which the wire is housed and wound, and which is integrated with the winding frame by winding the lead wire.

According to the present invention, a coil wire is wound around a body having flanges at both ends, and a reinforcing coating is applied to the winding start and winding ends of the coil wire, and the reinforcing coating allows the lead to have a diameter larger than that of the coil wire. In the coil frame that is taken out as a wire,
A lead wire groove having a groove width in which the lead wire is accommodated and wound is formed in an annular shape in the circumferential direction of the winding start and winding end portions of the coil wire on one or both inner surfaces of the collar; A lead wire extraction portion consisting of a slit cut from the outer edge of the collar toward the center is formed in at least two opposing locations of the annular lead wire groove, and the lead wire groove includes a winding start portion and a winding end portion. The lead wire is housed around half a turn or around one turn and wound into a coil winding frame.

<Function> As described above, by forming the lead wire groove, the lead wire is stored and wound around at least one turn, so there is no winding disorder, and the lead wire and the winding frame are firmly integrated, and the lead wire is Good electrical and mechanical strength can be obtained.

<Embodiment> FIGS. 1 to 3 show an embodiment of a coil winding frame according to the present invention.

In the figure, reference numeral 1 denotes a coil winding frame such as a bobbin, which has flanges 3, 3 at both ends (left and right) of a body 2, and the material thereof is not particularly limited, but may be made of, for example, plastic, metal, or ceramics. is formed. A coil wire 4 such as an enameled wire is wound in multiple layers around the body 2 of the coil winding frame 1, and sleeves are provided at the winding start and winding end portions 4a and 4b of the coil wire 4. A reinforcing coating 5, 5 is applied by covering the lead wires 6, 6 with a tube or the like. As a matter of course, the reinforcing coating 5,
5 is thicker than the 4th part of the coil wire.

In the case of the present invention, one of the flanges 3, 3 (on the left side in FIG. 1) has a lead on its inner surface at a portion corresponding to the beginning of winding of the coil wire 4 and a portion corresponding to the end of winding the coil wire 4. line 6,6
Annular lead wire grooves 7 and 8 having a width corresponding to the outer diameter of the lead wire grooves 7 and 8 are formed, and collar 3 is formed in the lead wire grooves 7 and 8 as take-out portions 9 and 9 for the lead wires 6 and 6.
A slit is formed from the outer edge toward the center.

Therefore, in the coil winding frame 1 of the present invention, for example, when winding the coil wire 4 in an even number of layers by bank winding (the same is true for aligned winding), the lead wire 6 at the beginning of winding is first slit at one end. The lead wire 9 is taken out to the outside, and a part of the lead wire is stored in the lead wire groove 7 and wound. This winding should be half a turn or one turn. Then, the desired layer of the coil wire 4 is wound around the body 2, and the end of the lead wire 6 is partially stored in the lead wire groove 8 and wound, and its tip is passed through the slit 9. Take it outside. This completes the coil as an electronic component. In this case as well, the winding in the lead wire groove 8 is half a turn or one turn.

In this coil, the lead wires 6, 6 at the beginning and end of winding are housed in the lead wire grooves 7, 8 and wound up, so that the integration with the coil winding frame 1 is maintained firmly, and the electrical and The mechanically strong lead wires 6, 6 can be drawn out. In addition, since only the coil wire 4 is wound around the body 2, irregular winding does not occur.

4 and 5 show other embodiments of the coil winding frame according to the present invention.

This coil winding frame 1a is compatible with the case where the coil wire 4 is wound in bank winding (the same is true for aligned winding) in odd number layers.In other words, in the case of an odd number of layers, the end of winding of the coil wire 4 is different from the beginning of winding. Since the direction is toward the opposite tsuba 3 (on the right side in Figure 4), the lead wire groove 8 and the corresponding tsuba 3 are attached to the tsuba 3 on the opposite side from the tsuba 3 at the beginning of winding (on the left side in Figure 4). Slits 9
It has been established. And its effects are
It is exactly the same as the coil winding frame 1 shown in FIGS. 1 to 3 above.

FIG. 6 shows still another embodiment of the coil winding frame according to the present invention. In this case, the coil winding frame 1b can be used for both even-numbered layers and odd-numbered layers of the coil wire 4. Lead wire grooves 7, 8 and slits 9 are previously provided on the inner surfaces of both flanges 3, 3. Therefore, during use, it is preferable to fill the unused portions of the lead wire grooves 7 and 8 with a filling material such as a suitable spacer.

In addition, in the present invention, when using a coil wire 4 with reinforcing coating 5 applied only to one end, one lead wire groove and one lead wire extraction part are provided correspondingly. That's fine. When the lead wire is wound around half a circumference, the lead wire groove does not need to be completely annular. Further, in the above embodiment, the lead wire take-out portions 9, 9 are connected to the collar 3.
However, the present invention is of course not limited to this, and the take-out portion 9 of the winding end portion may be formed at an appropriate position according to the finished diameter of the coil. Further, it is also possible to form the holes not only in the above two places but also in several places in advance. Further, in the present invention, the extraction part 9 is a slit, but a hole penetrating the front and back sides of the collar 3 or a groove similar to the lead wire grooves 7 and 8 may be formed from the outer edge of the collar 3 toward the center. . Furthermore, it goes without saying that the present invention can be applied not only to small-sized winding frames such as electromagnetic coils, but also to other large-sized winding frames.

<Effects of the invention> As is clear from the above description, according to the present invention, the lead wire is stored in the groove and wound around at least one turn due to the formation of the lead wire groove, so there is no winding disorder and the lead wire is It is possible to provide an excellent coil winding frame that can be firmly integrated with the winding frame and provide good electrical and mechanical strength of the lead wire.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the coil winding frame according to the present invention, FIG. 2 is a side view of the coil winding frame shown in FIG. 1, and FIG. 3 is a side view of the coil winding frame shown in FIG. 1. FIG. 4 is a cross-sectional view showing another embodiment of the coil winding frame according to the present invention, and FIG. FIG. 6 is a partially enlarged cross-sectional view showing the winding state of the coil wire, and FIG. 6 is a cross-sectional view showing still another embodiment of the coil winding frame according to the present invention. In the figure, 1, 1a, 1b... coil frame, 2...
...Body part, 3...Tsuba, 4...Coil wire, 5...
Reinforcement coating, 6...Lead wire, 7, 8...Lead wire groove, 9...Lead wire extraction portion.

Claims (1)

[Scope of utility model registration request] A coil wire is wound around a body portion having flanges at both ends, a reinforcing coating is applied to the winding start and winding end portions of the coil wire, and the coil wire is taken out to the outside as a lead wire with a diameter larger than the coil wire through the reinforcing coating. In the winding frame, a lead wire groove having a groove width in which the lead wire is housed and wound is formed in an annular shape in the circumferential direction of the winding start and winding end portions of the coil wire on the inner surface of one or both of the flanges. The collar is provided with lead wire take-out portions consisting of slits cut from the outer edge of the collar toward the center at at least two opposing locations of the annular lead wire groove, and the lead wire groove is provided with a winding section. A winding frame for a coil characterized in that the lead wire at the beginning and end of the winding is stored and wound around half a turn or one turn.