JPS59963B2 - coil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coil used, for example, in a transformer.

When winding conductors on a bobbin in an aligned manner using a winding machine,
Causes of irregular alignment include conductor feeding errors, variations in the diameter of the conductor, eccentricity of the rotating shaft, vibration of the conductor, etc. Among them, vibration of the conductor and wire has an influence -7)S
Shishikii.

There is also a method known as the real-time method, in which the position of the previously wound conductor is detected, the supply position of the conductor is set, and the conductor is wound sequentially along the previously wound conductor, but this is the method described in D above. This causes overlapping or skipping of conductors. There is also the problem of response speed when detecting the position of the conductor.
Winding speed is also limited. When a circular bobbin 1 is used as shown in Fig. 1, the length and tension of the conductor 3 between the supply side 2 and the bobbin 1 are always equal, and therefore the vibration of the conductor 3 is extremely small and good. can be aligned. However, on the other hand, when the bobbin 1 is inserted into the iron core, it requires a large space and has the disadvantage of becoming humanoid. Therefore, a rectangular bobbin 4a is generally used as shown in FIG. In this case, bobbin 4a
If the corners of are a, b, c, and d, for example, bc
Regarding the three planes between C, Cd, and da, as shown in Fig. 3, the previously wound conductor 3 and the newly wound conductor 3 are parallel to each other in a plane parallel to the rotation direction of the bobbin 4a. Since the conductor wire 3 that has been wound before and the conductor wire 3 that has been newly wound next to it are parallel to each other, the direction of rotation of the bobbin 4 is different as shown in FIG. The slope is one pitch. The direction of inclination changes each time the winding layer changes one stage. Between the tabs and ab, the conducting wire 3 wound on the inner layer (shown by the dotted line in FIG. 4) and the conducting wire 3 wound on the outer layer (shown by the solid line in FIG. 4) intersect. Therefore, since the three surfaces between bc, Cd, and da are wound while being guided by grooves 3a inevitably formed between adjacent conductive wires 3, the alignment is good. On the other hand, since one surface between a and b intersects between layers, it is necessary to always follow the previously wound conducting wire 3 on one side.
In this case, as shown in Fig. 2, the length of the conductor 3 between the bobbin 4a and the supply side 2 is always the same because the corner a changes its position from A, opening, C, 2, etc. Change. In particular, as the bobbin 4a rotates, the point of contact with the conductor 3 is
Conductor 3 when changing from corner B to corner A between layers
The length and tension of the wire vary greatly, and vibrations are transmitted to the conductor wire 3.
Therefore, between corners Ab? In the case of death, it is impossible to follow the conductor 3 on one side, resulting in double jumps and jumps.

The object of the present invention is to provide a coil that can solve the above-mentioned drawbacks.

An embodiment of the present invention will be explained based on FIGS. 5 to 7.

For convenience of explaining the operation, the explanation will be made using FIGS. 1 to 4 together with the same reference numerals. 4 is a rectangular bobbin body, and this bobbin body 4 has flanges 5 formed on both sides and a square hole 6 for insertion into an iron core (not shown).

Further, the flange 5 is formed with a groove 7 for holding one end of the conducting wire 3, a guide groove 8 for guiding the conducting wire 3 to the outer surface of the bobbin body 4, and a hook portion 9 for hooking the other end of the conducting wire 3. . Further, each corner A, b, c, d of the bobbin body 4 has a large number of grooves 1 with a pitch slightly smaller than the diameter of the conductor 3.
0 is formed. Thus, an arc-shaped bulge 11 whose radius is centered around the center of the bobbin body 4 is formed on the surface between the corners Ab. Based on this configuration,
The bobbin main body 4 is set in a winding machine (not shown) and the conductor wire 3 is wound by rotating the bobbin main body 4. In the first layer, the conductor wire 3 is guided by the groove 10 and is placed in an overlapping D. The windings are neatly aligned and wound without skipping or skipping.

At this time, the three planes between Bc, Cd, and Da are wound in a plane parallel to the rotating plane of the bobbin body 4, as shown in FIG. Shift by one pitch. That is, between A and B, the conducting wire 3 is wound within a plane intersecting the rotating plane of the bobbin body 4, as shown in FIG. After the second time, between Bc, Cd, and Da}
Since the conductive wires 3 are guided by grooves 3a inevitably formed between the conductive wires 3 adjacent to each other, they are wound in an aligned state. Since the conductor 3 intersects between the inner layer and the outer layer between Ab and A, it must be wound along the already wound conductor 3 on one side, but there is an arc-shaped bulge between the corners Ab. Part 11
During this period, the length and tension of the conducting wire 3 between the supply side 2 and the bobbin body 4 do not change. Therefore,
The conducting wire 3 does not vibrate, and the conducting wire 3 is wound in alignment along the already wound conducting wire 3. As shown in FIG. 7, when a chevron-shaped bulge 12 is formed between A and B, the bulge 12 is located between the time when corner b contacts the conductor 3 and the time when corner a contacts the conductor 3. During this period, the change in the length of the conductor 3 between the bobbin body 4 and the supply side 2 and the change in tension based thereon become small. This reduces the vibration of the conducting wire 3, although not as much as the arc-shaped bulge 11. If more bulges are provided between the corners, the same winding effect as using a circular bobbin body can be obtained. In this case, since the bulges 11 and 12 are not formed on each side of the bobbin body 4,
The advantage of miniaturization of the rectangular body 4 is not lost. Since the present invention is configured as described above, since the bulge exists on the conductor crossing surface formed between the corners of the rectangular bobbin body, the surface on which the bulge is formed is connected to the bobbin body and the supply wire. It is possible to prevent the occurrence of vibration by reducing the change in the length of the conductor between the two sides and the resulting change in tension. Therefore, by crossing the conductor on the surface where the bulge is formed, the conductor It is possible to prevent overlapping and skipping of the voltages, thereby distributing the voltage evenly, preventing abnormal temperature rises, and extending the service life.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of the operation when winding a conductor wire around a circular bobbin, Figure 2 is an explanatory diagram of the operation when winding a conductor wire around a conventional rectangular bobbin, and Figures 3 and 4 are illustrations of the operation of winding a conductor wire around a conventional rectangular bobbin. An explanatory diagram showing a winding state, FIG. 5 is a perspective view of a bobbin main body showing an embodiment of the present invention, FIG. 6 is a vertical side view of the bobbin main body showing a winding state, and FIG. 7 is a winding state. It is a longitudinal side view which shows the bobbin main body Q modification example which shows. 3...Conductor wire, 4...Bobbin body, 11
~12...Bulge.

Claims (1)

[Claims] 1 A rectangular bobbin body is provided on which the conductor wires are wound in an aligned manner,
A bulge that protrudes outward is formed on one surface of the bobbin body, and the conductor wires that are aligned and wound while alternating directions are formed with the surface on which the bulge is formed as the conductor intersection surface. A coil characterized in that a winding is formed by winding the wire in a crossed manner.