JPS6285508A - Delay line - Google Patents

Abstract

PURPOSE:To avoid such a case where a connecting tap or a lead is extended long from a bobbin by connecting the tap led out of each coil to the electrode of the 1st bobbin respectively together with the input lead of the coil connected to the electrode of the 2nd bobbin respectively. CONSTITUTION:A synthetic resin substrate 70 contains plural conductive plates 80 including terminals 82 and a connection part 84 formed in a body. The terminals 82 are projected from both side faces of the substrate 70 and the part 84 is exposed into a recess part 72 formed to the lower surface side of the substrate 70. A hollow 74 having its diameter little larger than that of a bobbin 50 is formed on the upper surface side of the substrate 70. Then the lower part of the bobbin 50 is fixed into the hollow 74. A coil wire is wound several times round the spool part of a bobbin 50a of an input terminal and then round an upper electrode 56. Then the coil wire is consecutively wound each bobbin 56b. Thus plural coils 10 are obtained. Here the bobbin 50a is used not only for production of the coil 10 but for fixing the input side terminal of the coil wire. In such a way, the assembling process of a delay line can be easily automated.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to delay lines used for timing adjustment and phase correction of circuits in electronic equipment that handles digital signals, such as electronic computers and OA equipment, and particularly relates to delay lines that are used for circuit timing adjustment and phase correction. This invention relates to a connection structure between a coil and a terminal in a constant type delay line.

[Prior Art] A lumped constant delay line circuit is constructed using a coil 10 and a capacitor 20, for example, as shown in FIG.

FIG. 10 shows a specific example of the structure, and shows the state before the main body is encapsulated in resin.

A plurality of capacitors 20 are soldered to printed wiring provided on the lower surface of the printed circuit board 30.

A synthetic resin sheet 40 having a plurality of holes 42 is adhered to the upper surface of the printed circuit board 30, and a plurality of coils 10 wound around a bobbin 50 made of a magnetic material such as ferrite are positioned by the holes 42. installed. Then, the lead 12 of the coil 10a at the input end, the lead 14 of the coil 10b at the output end, and the tap 16 of each coil 10 are connected to the printed wiring on the printed circuit board 30 by soldering, and then connected to the terminal 62 respectively. has been done.

Conventionally, such a delay line was assembled as follows.

First, as shown in FIG.
Twist it and apply preliminary solder to its tip. On the other hand, the capacitor 20 is soldered to the lower surface of the printed circuit board +ff 130, and the sheet 40 in which a plurality of holes 42 are formed in correspondence with the bobbin 50 is adhered to the upper surface of this printed circuit board 30.

Next, the above-described coil 10 and a series of bobbins 50 connected by their wires are fitted into the holes 42 and bonded and fixed to the upper surface of the printed circuit board 30. Then, the leads 12, 14 of the coil 10 and each tap 16 are guided to a predetermined connection part of the printed wiring and soldered.

The printed circuit board 30 to which the coil 10 and capacitor 20 are attached is sandwiched between lead frames with a large number of terminals 62 lined up on two sides, and the leads 1
2. Solder each connection part of the printed wiring to which 14 and the tap 16 are soldered to the respective terminal 62. After this, by cutting out unnecessary parts of the lead frame, the 10th
The delay line shown in the figure was obtained.

[Problem that the invention seeks to solve]

A conventional coil chain in which a plurality of bobbins 50 are connected by a coil 10 and its wire has an elongated tap 16 and input/output glues 12 and 14, as shown in FIG. Therefore, it is extremely difficult to automate the work of soldering these taps 16 and leads 12 and 14 to printed wiring or terminals. Therefore, in the past, this troublesome work was performed manually, leading to a decrease in productivity.

[Means for solving problems]

In addition to a plurality of first bobbins on which coils are continuously wound, a second bobbin having substantially the same shape as these bobbins is provided, and one end of each of the first and second bobbins is provided with a second bobbin. In addition to forming electrodes, the taps derived from each coil are connected to the electrodes of the respective first bobbins, and the input leads of the coils are connected to the electrodes of the second bobbin. This prevents the reed from extending too long from the bobbin.

〔Example〕

1 to 7 relate to one embodiment of the present invention.

Note that parts corresponding to those shown in FIGS. 9 to 11 are given the same reference numerals in these figures.

FIG. 1 is a plan view showing the delay line before the main body portion except the terminals is sealed in resin, similar to FIG. io, and FIG. 3 is a bottom view of the board 70 with the capacitor attached. A plurality of conductive plates 80 having integrally formed terminals 82 and connecting portions 84 are embedded in the substrate 70 made of synthetic resin.

Each terminal 82 protrudes from two sides of the board 70,
The connecting portion 84 is exposed within the recess 72 provided on the lower surface of the substrate 70. As shown in FIG. 3, a chip-type capacitor 20 is housed in the recess 72, and its electrode 22 is soldered to a connecting portion 84. Further, as shown in FIG. 4, a recess 74 having a diameter slightly larger than that of the bobbin 50 is formed on the upper surface of the substrate 70, and each bobbin 50 is fixed by inserting its lower part into this recess 74 as shown in FIG. has been done.

As shown in an enlarged view in FIG. 6, the bobbin 50 has a protrusion 52 at one end that protrudes in the direction of the winding axis of the coil, and this protrusion 52 has a camp-shaped electrode 56 made of a conductive material. It's covered. The coil wire is attached to the bobbin 50 at the input end.
The upper electrode 5 is wound several times around the winding frame part 54 of a.
6, and is further continuously wound around each bobbin 50 one after another to form a plurality of coils 10. However, only the bobbin 50a at the input end is not for forming the coil 10 (it is for fixing the input end of the coil wire material, and the electrode 56 is for the input end to which the input lead 12 is connected). Therefore, winding on the bobbin 50a at the input end to the winding frame portion 54 may be omitted and the winding work may be started from the electrode 56.For this reason, the bobbin 50a is connected to the other bobbin 50. It does not have a reel part 54 like the one shown in FIG.
Any shape is sufficient.

The coils 10 except the coil 10b at the output end are attached to each bobbin 50.
The electrode 5 is pulled upward during winding on the winding frame portion 54 of the electrode 5.
6 to lead out the tap 16, it is again wound around the winding frame portion 54.

Since the coil 10b at the output end does not require a tap in the configuration shown in FIG. 9, the coil wire material that has been wound around the winding frame portion 54 of the bobbin 50b is pulled out upward and wound around the electrode 56 and fixed there. is cut off. That is, the electrode 56 of the input end bobbin 50a becomes the lead electrode of the input end coil 10a, and the electrode 56 of the output end bobbin 50b becomes the lead electrode of the output end coil 10b. Each electrode 56 is connected to a wire 9 such as a polyurethane coated wire.
0 and is connected to terminal 82.

Next, an example of a method for manufacturing this delay line will be described with reference to the drawings. First, as shown in FIG. 2, a lead frame 80 is formed by punching a conductive plate into a predetermined pattern.
', a synthetic resin substrate 7o is insert molded. At this time, as shown in FIGS. 3 and 4, a recess 74 and a recess 72 separated by a partition wall 76 are formed on the upper and lower surfaces of the substrate 70, and the connecting portion 84 of the lead frame 80' is inserted into the recess. 72 so that it is exposed inside. Next, as shown in FIG. 3, a plurality of capacitors 20 are mounted in the four parts 72 on the lower surface of the substrate 70 while being separated from each other by partition walls 76, and the electrodes 22 and connecting parts 84 of the capacitors are soldered, and the electrodes The bobbin 50 with the 5G attached thereto is fixed in the recess 74 of the substrate 7o by adhesive or the like.

After this, for example, as shown in FIG.
By rotating it around 0a, the end of the wire is wound around the winding frame portion 54 several times and fixed, and then the wire is pulled upward and wound around the electrode 56. Next, cylinder body 1
00 is moved closer to the adjacent bobbin 50 and rotated around the bobbin 5o to wind the coil 10 around the winding frame portion 54. In the middle of winding this coil 10, the tap 16 is taken out and the electrode 5G
After winding the coil 10 around the winding frame portion 54 again. The coil 10 is continuously wound around each bobbin 50 by repeating similar operations. The coil wire material that has been wound around the winding frame portion 54 of the bobbin 50b at the output end is pulled out upward, wound and fixed around the electrode 56, and cut there. Next, after soldering the wound wire and the electrode 56, the electrode 56 and the terminal 82 are electrically connected with the wire 90 by soldering or welding, and the delay line as shown in FIG. 1 is obtained. is completed. After that, the main body part except the terminal 82 is sealed in synthetic resin, and the lead frame 80
By cutting out the unnecessary part of ', the final delay line is completed.

Note that this embodiment has been described using an example in which the coil 10b at the output end does not have a tap, but in the case of a configuration in which the coil 10b has a tap, the tap is connected to the electrode 56 of the bobbin 50b, and another bobbin is connected. Just install it on the output side and connect the output lead to the electrode of this bobbin. Further, as an example shown in FIG. 8, instead of the cap-shaped electrode 56,
The electrode 56 may be formed by embedding a metal bottle 58 in one end of the bobbin 50 or fixing it by adhesive or other means, or a structure in which a flat electrode that does not protrude is provided at one end of the bobbin. You can close it. The present invention
Needless to say, the present invention is not limited to a case in which a conductive plate integrated with a terminal is insert-molded on a board, but can also be applied to a delay line using a printed circuit board 30 as shown in FIG.

As described above, the present invention provides a plurality of first bobbins 50, 50b on which coils are continuously wound, and a second bobbin 5a having substantially the same shape as these bobbins, so that each The feature is that the taps of the coil and the input/output leads are all connected and fixed to the electrode 56.

〔Effect of the invention〕

According to the present invention, the taps and input/output leads are fixed to the electrodes during the coil winding process, eliminating the need for long wires extending in different directions from the coil series, making assembly and connection work much easier. , which has a remarkable effect on automating each assembly process of the delay line.

[Brief explanation of drawings]

1 to 7 relate to one embodiment of the present invention. Figure 1 is a partially cutaway perspective view showing the assembled state of the delay line, and Figures 2 to 5 are for explaining the manufacturing process of the delay line. Figures 2 and 3 are partially cutaway views. Figures 4 and 5 are partially cutaway plan views;
The figure is an enlarged front sectional view of the bobbin, Figure 7 is an explanatory diagram of the winding method, Figure 8 is a front sectional view showing another embodiment of the bobbin provided with electrodes, and Figure 9 is the circuit configuration of the delay line. FIG. 10 is a partially cutaway perspective view showing the configuration of a conventional delay line, and FIG. 11 is a perspective view showing a conventional example of a series of bobbins around which coils are wound. 10 ・l Oa ・10 b --------1-coil, 12--human lead, 16...
Tap, 50, 50b-・1st bobbin, 56-...-
Electrode, 50a ・-・・-・・−・・−・−Second bobbin, 82 ・−Terminal.

Claims (1)

[Claims] A second bobbin having substantially the same shape as the bobbin is attached to a synthetic resin substrate on which a plurality of first bobbins on which coils are continuously wound and a plurality of terminals are attached. A delay device characterized in that an electrode is formed at one end of each bobbin, a tap derived from each coil is connected to the electrode of the first bobbin, and an input lead of the coil is connected to the electrode of the second bobbin. line.