JPH0471325B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a composite component constructed by combining a coil and other components.

2. Description of the Related Art Conventionally, a typical example of this type of composite component is a delay line used for signal delay in computer equipment, OA (office automation) equipment, and the like.

This day line, as shown in Figure 6,
The circuit has a circuit configuration in which a plurality of coils L are connected between an input end and an output end, and a capacitor C is arranged between each of the coils L and the ground.

Conventionally, when configuring such a delay line, a structure as shown in FIGS. 7 to 9 has been adopted.

The delay line shown in FIG. 7 is constructed by winding a coil 1 around a drum core 1a. are doing. Further, the coil 1 is placed on the back surface of the circuit board 2.
A rectangular chip capacitor 3 is provided which is connected to the wiring section. Furthermore, external lead terminals 4 are attached to both edges in the width direction of the circuit board 2 at regular intervals, and the terminal of the coil 1 is attached to the tip 4a of the external lead terminal 4. This terminal is connected by wrapping it around the tip portion 4a and soldering it.

In this way, after arranging the coil 1 and chip capacitor 3 on the circuit board 2 and attaching the external lead terminals 4, the whole is formed by transfer molding, leaving the connection part of the external lead terminal 4 with the external circuit. It is completed by covering it with an insulating exterior resin. FIG. 8 shows a cross-sectional structure with an exterior covering applied, and 5 is an epoxy resin as the exterior resin.

In addition, a delay line having another structure shown in FIG. 9 has a plurality of coils 6 formed by dividing and winding a winding wire around a bobbin 6a having a plurality of winding grooves. This delay line has a coil 6 and a chip capacitor 3 arranged on the surface of the circuit board 2, but the other structure is almost the same as the above-described delay line.

Problems to be Solved by the Invention However, with the configurations shown in FIGS. 7 to 9, it was impossible to continuously wind a plurality of coils and wire the coil terminals continuously. . In addition, when a bobbin terminal is provided on a bobbin having multiple winding grooves and flanges, when winding the coil end around the bobbin terminal, the winding nozzle may come into contact with the bobbin terminal of the adjacent flanges, causing wire breakage. There were some drawbacks.

The present invention solves these conventional problems, and aims to enable continuous winding of a plurality of coils and continuous winding around a bobbin terminal. It is.

Means for Solving the Problems In order to solve this problem, the present invention provides a bobbin terminal having a plurality of winding grooves and a plurality of flanges to which windings are connected, and to which terminals of the windings are connected. A coil component in which a plurality of coils are arranged on a bobbin with a flange, and a circuit board on which the coil component and other electronic components are arranged and wired to form a predetermined circuit. The bobbin terminal is L-shaped, and one protruding part of the bobbin terminal protruding from the collar is arranged in a staggered manner so that the position is shifted for each collar.

Function With this configuration, it is possible to wind the coil in each winding groove and continuously wind it around the L-shaped bobbin terminal provided on each collar, and also to arrange the L-shaped bobbin terminals in a staggered manner for each collar. By arranging the bobbin terminals, the terminal interval between the bobbin terminals becomes wide, and the winding nozzle when winding the bobbin terminals does not come into contact with the adjacent bobbin terminals.

Embodiments Hereinafter, embodiments of the present invention will be described using the drawings of FIGS. 1 to 5.

1 to 3 show the cross-sectional structure and external appearance of a delay line according to an embodiment of the present invention. In the figures, 10 is a coil component, and this coil component 10 is formed by a plurality of collars 11a. A bobbin 1 made of insulating resin and having a plurality of winding grooves 11b formed therein.
It is constructed by winding a plurality of coils 12 in each winding groove 11b. Each collar 11a of the bobbin 11 of this coil component 10 has both ends of an L-shaped bobbin terminal 13 attached to the collar 11a.
One of the protruding parts 13a, which is disposed so as to protrude further, and which protrudes from the side of the bobbin terminal 13, is arranged in a staggered manner so that the position is shifted for each collar 11a. The terminal of each coil 12 is wired to the protrusion 13a.

Also, the bobbin terminal 13 of the collar 11a of the bobbin 11
The parts where are not provided, that is, the upper and lower parts, are cut out. 11c is the notch. Reference numeral 14 denotes a circuit board on which a wiring portion of a predetermined circuit pattern is formed. On the back surface of this circuit board 14 on which the wiring portion is formed, a plurality of rectangular chip capacitors 15 are mounted so as to be arranged in parallel. The coil component 10 is arranged on the surface.
This coil component 10 is constructed by inserting the protrusion 13b of the bobbin terminal 13 protruding from the lower part of the bobbin 11 into the insertion hole of the circuit board 14 from the front side of the circuit board 14, and then inserting the protrusion 13b of the bobbin terminal 13 from the front side of the circuit board 14, and then inserting the protrusion 13b of the bobbin terminal 13 into the insertion hole of the circuit board 14 from the front side of the circuit board 14. On the side, the coil 1 is attached to the circuit board 14 by soldering to the wiring part of the circuit board 14 in the same way as the chip capacitor 15.
2 and chip capacitor 15 are connected to form a predetermined circuit.

Reference numeral 16 denotes external lead terminals arranged at regular intervals on both edges of the circuit board 14 in the width direction.
It is inserted into the insertion holes provided on both edges in the width direction from the front side, that is, the side where the coil component 10 is arranged, and is connected to the wiring part of the circuit board 14 by soldering on the back side where the chip capacitor 15 is arranged. Connections have been fixed. Further, the connection portion side with the external circuit is bent and drawn out to the side opposite to the coil component 10 side.

Reference numeral 17 is an exterior resin such as epoxy resin, and the entire body is covered with the exterior resin 17 by transfer molding, except for the connection portion of the external lead terminal 16 with the external circuit.

Here, a method for manufacturing a delay line having this structure will be explained using FIGS. 4a to 4c and FIG. 5.

First, as shown in FIG. 5, the copper wire passed through the winding nozzle 18 is wound around the winding groove 11b of the bobbin 11,
Then, connect the terminal to the protrusion 13a of the bobbin terminal 13.
By rotating the winding nozzle 18 around , winding is performed around the protrusion 13a. By doing this continuously, a coil component 10 consisting of a plurality of coils 12 is constructed, as shown in FIG. 4a.
Further, as shown in FIG. 4B, the chip capacitor 15 is temporarily fixed to the circuit board 14 with an adhesive. In addition, in FIG. 4b, 14a is an insertion hole provided in the circuit board 14. Thereafter, the coil component 10 and the protrusion 13b of the bobbin terminal 13 are arranged on the front side of the circuit board 14 so as to be inserted into the insertion hole 14a of the circuit board 14, and the lead frame 16' is inserted as shown in FIG. 4c. The plurality of external lead terminals 16, which are connected to each other, are similarly inserted into the insertion hole 14a from the front side of the circuit board 14. Thereafter, by soldering the entire back side of the circuit board 14, the wiring portion of the circuit board 14, the chip capacitor 15, the bobbin terminal 13 of the coil component 10, and the external lead terminal 16 can be soldered. After this, the entire external lead terminal 16 is covered with an exterior resin 17, leaving a part of it, and the external lead terminal 16 is separated from the lead frame 16'.
As shown in FIG. 3, the completed product is obtained by bending it to the side opposite to the coil component 10, that is, the side to which the soldering was performed. In the manner described above, a delay line having a plurality of external lead terminals 16 can be obtained.

Although the above embodiments have been explained using a delay line as an example, it goes without saying that the present invention can also be applied to composite parts using coils other than delay lines. Further, the pull-out structure of the external lead terminal 16 is not limited to that of the above embodiment, and the coil component 10
It may be pulled out to the side or may have a structure suitable for surface mounting.

Effects of the Invention As described above, according to the present invention, in a composite component having a plurality of coils, it is possible to continuously wind the coils and wind them around the bobbin terminal, thereby improving productivity. In addition, by bending the bobbin terminal into an L-shape and protruding from the side of the bobbin, the height of the bobbin can be lowered, and by arranging the bobbin terminals in a staggered manner, the length of the bobbin can also be shortened. Therefore, it is possible to downsize the device.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a day line according to an embodiment of the present invention taken in the width direction, FIG. 2 is a cross-sectional view of the same day line taken in the length direction, and FIG. Perspective view showing external appearance, Figure 4a
~c is a perspective view showing the state of the main process for explaining the manufacturing method of the same day line, Fig. 5 is a side view showing the state when manufacturing coil parts in the same day line, Fig. 6 is a circuit diagram of a general delay line, Figures 7 and 8 are perspective views and cross-sectional views showing the main parts of a conventional delay line, and Figure 9 shows the main parts of another conventional delay line. FIG. 10...Coil parts, 11...Bobbin, 11a
...Brim, 11b... Winding groove, 11c... Notch,
12...Coil, 13...Bobbin terminal, 13a,
13b...Protrusion, 14...Circuit board, 14a...
...insertion hole, 15...chip capacitor, 16...
External lead terminal, 17...Exterior resin.

Claims (1)

[Claims] 1. A coil component in which a plurality of coils are arranged on a bobbin that has a plurality of winding grooves in which windings are applied and a plurality of flanges, and a bobbin terminal to which the ends of the windings are connected is provided on the flanges. , a circuit board on which this coil component and other electronic components are arranged and on which these parts are wired to form a predetermined circuit, an external lead terminal arranged on this circuit board, and this external lead terminal. The bobbin terminal is formed into an L-shape, and one protruding part of the bobbin terminal protruding from the collar is staggered so that the position is shifted for each collar. A composite part characterized by being arranged in a shape.