JPH0134433Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to improvements in lumped constant electromagnetic delay lines.

(Technical background of the invention) As shown in FIG. 1, a conventional delay line of this type has a coil portion 1 having a predetermined inductance.
is placed in the case 2 in an electrically insulated state, and a plurality of capacitors (not shown) are electrically connected on the ground side and placed in the case 2 separately from the coil part. . Lead wires extending from each coil portion are connected to terminals 3 and capacitors attached to the case 2 by soldering.

Other conventional delay lines include a so-called L-stay made by connecting the coil parts and a so-called C-decks made by mounting a capacitor on a printed circuit board, which are housed separately in a case, or a board on which a capacitor is mounted. It is known that a lead terminal and an L stake are attached to the IC to form an IC.

(Problems with Background Art) By the way, in any of the above-mentioned delay lines, complicated wiring is required to connect the lead wire from the coil portion to a predetermined terminal or capacitor. Moreover, since this wiring is difficult to automate, it is currently done manually. Therefore, wiring errors are likely to occur, and troubles such as wire breakage often occur. Additionally, the coil and capacitor are housed separately in the case, and the lead wire requires a certain amount of space to prevent short circuits, making it difficult to downsize the delay line. be.

(Purpose of the invention) The purpose of the invention is to provide a lumped constant electromagnetic delay line that is compact and does not require complicated wiring.

(Summary of the invention) The present invention involves winding a conductive wire between a plurality of protrusions protruding outward in the width direction of the main body using the main body as a shaft to form a coil portion, and a coil provided on the protrusion on at least one side of the main body.・Fix the terminal of the coil part and the chip capacitor to the ground conductive part provided near the conductive part for capacitor connection, thereby electrically connecting the coil and capacitor without using lead wires, and incorporating them into the main body. It is characterized by

(Embodiments of the invention) Hereinafter, embodiments of the invention will be described with reference to the drawings.

As shown in FIG. 2, the lumped constant electromagnetic delay line according to the present invention includes a main body 4 made of a dielectric substrate. This main body 4 has a shaft portion 4A, and this shaft portion 4
A plurality of protrusions 5, 5' protruding outward in the width direction are provided at equal intervals on both sides of A in the longitudinal direction. Between the bases of the plurality of protrusions 5 on one side (lower side in the figure) of the shaft portion 4A and the plurality of protrusions 5' on the other side (upper side),
A conductive portion 6 for connecting a coil and capacitor is provided that crosses the shaft portion 4A. In addition, a ground conductive portion 7 is provided at each tip of the plurality of protrusions 5' on the other side of the shaft portion 4A. The flat plate portion 4B integrally formed at the end of the shaft portion 4A has an L
A ground terminal conductive portion 8 shaped like a letter is provided. Incidentally, each of the conductive parts 6, 7, and 8 is provided on the shaft part 4A etc. by printed wiring.

As shown in FIG. 3, a coil portion 9 is wound around the shaft portion 4A of the main body 4 between the protrusions 5 and 5'. These coil parts 9 are made by continuously winding a single coated wire between the protrusions 5 and 5', and fixing the part of the wire that crosses the conductive part 6 to the conductive part 6 by removing the coating layer by soldering. Both terminals 9a, 9a are fixed to the conductive part 6 and formed as a coil part electrically connected. In the portion located at the base of the protrusion 5' on the other side of each conductive part 6,
One electrode of the chip capacitor 10 (not shown)
are fixed by soldering, and the other electrode of these chip capacitors 10 is also fixed by soldering to the ground conductive portion 7 at the tip of the protrusion 5' on the other side. In addition, lead terminals 11 as external connection terminals are clamped to each protrusion 5 on one side of the shaft portion 4A, and these lead terminals are electrically connected to the conductive portion 6 of the protrusion 5 by soldering. It is fixed. The ground conductive parts 7 are electrically connected to each other via a ground wire 12, and the ground wire 12 is connected to the ground terminal conductive part 8.
A ground terminal 13 is fixed to this conductive portion 8 by soldering.

Therefore, the coil portion 9 and the chip capacitor 10
The lead terminal 11 and the ground terminal 13 are electrically connected to each other without using any lead wire. As a result, wiring of lead wires becomes unnecessary, and there is no possibility of wiring errors occurring. Moreover, since the wiring space for the lead wire is unnecessary and the capacitor and coil are integrated into the main body, the delay line itself can be made smaller. Furthermore, since there is no need to wire the lead wires, and there is no need to pull out the lead wires from the coil section, twist them together, and solder-plate the lead wires as in the conventional method, assembly of the delay line becomes extremely easy, and production is reduced. Improves sex.

Incidentally, the length dimension of the shaft portion 4a of the main body 4 is increased, a large number of projections 5, 5' are provided on the shaft portion 4a, and a conductive portion 6 for connecting a coil/capacitor is provided on the shaft portion 4a and the projections 5, 5'. If the ground conductive portion 7 is provided by printed wiring and a large number of coil parts and chip capacitors are attached as described above, a large number of delay lines of the present invention can be created at once. That is, simply by dividing the shaft portion 4a of the main body 4 into a large number of parts at predetermined positions, a large number of delay lines of the present invention having a desired delay time according to the application can be obtained.
In this way, the delay line of the present invention has a structure that allows a large number of them to be produced at once, and this, combined with the fact that there is no need for lead wire wiring, facilitates mass production. Also,
Since a delay line having a predetermined delay time can be obtained by simply changing the dividing position for each application, there is no need to create delay lines with different structures for each application as in the past. Therefore, the unit cost for each delay line is extremely low compared to the case where a small number of delay lines are specially created for a special purpose, which is economical.

The main body 4 and the protrusions 5, 5' are made of a magnetic material such as ceramic, heat-resistant resin, or insulating magnetic material, but if they are made of a non-magnetic material, they may be made of a non-magnetic material as shown in FIG. 4A. Then, an auxiliary core 14 is formed from a magnetic material in the same shape as the main body 4, and as shown in FIG.
As shown in FIG. 3, it is possible to fix this auxiliary core 14 to the back surface of the main body 4 to obtain a delay line having a large inductance.

FIGS. 5A and 5B each show a modification of the embodiment shown in FIG.
The thickness of A is increased at the portion where the conductive portion 6 for connecting the coil and capacitor is located. Thereby, the coil portion 9 can be easily wound in an aligned manner, and the protruding surface of the chip capacitor 10 and the surface of the conductive portion 6 can be made to coincide with each other. In addition, in FIG. 5B, the ground wire 12 connecting the ground conductive parts 7 passes through the shaft part 4A, so that the ground wire 12
can be directly connected to the ground terminal 13. Therefore,
The flat plate portion 4B becomes unnecessary.

Another embodiment of the invention is shown in FIGS. 6A and 6B. In this embodiment, a ground conductive part 7' is provided at the center of the shaft part 4A of the main body 4 along its longitudinal direction, and one end of this conductive part 7' extends up to a protrusion 5 located at one end of the shaft part 4A. It is growing. On the other hand, the conductive parts 6' for connecting the coil and capacitor are provided on both sides of each protrusion 5 on one side of the shaft 4A, and extend across the shaft 4A on the back surface of the main body 4, as shown in FIG. 6B. It is growing. The terminal of the coil portion 9 is connected to the conductive part 6' by soldering on the back surface of the main body 4 (FIG. 6B), and is connected to the lead terminal 11.
is clamped to each protrusion 5 on one side and fixed by soldering. Therefore, the conductive portions 6' provided on both sides of each projection 5 are electrically connected through the lead terminals 11.

7A and 7B show the main body 4 of the delay line which constitutes a π-type circuit and has no intermediate signal output terminal. Figure 7A is a 2-stage 3-terminal delay line, Figure 7B
shows the main body of a delay line with five stages and six terminals, and the ground conductive part 7' is provided along the longitudinal direction of the shaft part 4A, and both ends are connected to the protrusions at both ends of one side (upper side) of the shaft part 4A. 5, 5, and its central portion extends to the protrusion 5' on the other side (lower side) of the shaft portion 4A. A recess 5a is provided at the tip of the protrusion 5 located in the middle of one side of the shaft portion 4A, and a recess 5a is provided in which the end of the coil portion is wound and fixed, and a conductive portion for connecting the coil and capacitor is provided in these protrusions. 6' is provided. The chip capacitor 10 has a conductive part 6'
The coil part 9 is wound between the protrusions 5 and 5' and its end is fixed in the recess a by soldering, and the coil part 9 is fixed by soldering across the conductive part 7' and the ground conductive part 6'. electrically connected to. still,
A lead terminal is attached to the protrusion 5' on the other side of the shaft portion 4a.

8A and 8B show the main body 4 of the delay line that does not have an intermediate signal output terminal and constitutes a T-type circuit,
At both ends of the shaft portion 4A, a conductive portion 15 for soldering the input terminal and output terminal of the coil is provided on the entire surface from the protrusion 5 on one side to the protrusion 5' on the other side. The rest has the same configuration as FIG. 7A or B. In addition, in the case of the vertical type in which the ground terminal 13 and lead terminal 11 extend to the left in FIG. You may also install it.

(Effects of the invention) According to the invention, the coil portion is wound between a plurality of protrusions that protrude outward from both sides in the width direction of the main body,
The terminal of the coil portion is fixed to a conductive part for coil/capacitor connection provided on a protrusion located at least on one side of the main body, and one electrode of the chip capacitor is fixed, and a ground conductive part is provided near the conductive part of the main body. By fixing the other electrode of the chip capacitor to the main body, and attaching a lead terminal to either protrusion on either side of the main body and electrically connecting it to either of the two conductive parts, it is possible to create a coil without using any lead wires. parts, chip capacitors and lead terminals can be electrically connected to each other. Therefore, there is no need for complicated wiring, no wiring space is required for lead wires, and the coil and capacitor are integrated into the main body, so it is a small and reliable product with no short circuits or disconnections. An electromagnetic delay line can be obtained. In addition, there is no need to wire lead wires, and simply by wrapping a single wire around the main body and soldering the wire that crosses it to the conductive part for connecting the coil and capacitor, the terminal of the coil part can be electrically connected to a chip capacitor, etc. Because it has a structure that can be connected to the main body, the assembly work is easy and quick. Furthermore, it has a structure that allows multiple delay lines to be created at once by simply increasing the length of the main body, making assembly work easy and easy. Therefore, it is possible to provide an inexpensive electromagnetic delay line suitable for mass production.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional electromagnetic delay line, Fig. 2 is a front view of the main body of the electromagnetic delay line according to the present invention, Fig. 3 is a front view of the electromagnetic delay line according to the present invention, Fig. 4A,
B is a front view of the auxiliary core and a side view showing the auxiliary core fixed to the electromagnetic delay line in FIG. 3; FIGS. Figures 6A and B are front and rear views of the main body according to another embodiment of the present invention, and Figures 7A and B are π of the present invention.
FIGS. 8A and 8B are front views respectively showing the main body of an electromagnetic delay line having a T-type circuit configuration according to the present invention. 4...Body, 4A...Shaft, 5, 5'...Protrusion,
6, 6'...Conductive part for coil/capacitor connection,
7, 7'...Ground conductive part, 9...Coil part,
9a...terminal, 10...chip capacitor, 11
...Lead terminal.

Claims (1)

[Claims for Utility Model Registration] (1) The shaft has a plurality of protrusions that protrude outward in the width direction at equal intervals along the longitudinal direction, and the shaft has a plurality of protrusions on one side and a plurality of protrusions on the other side. Between the bases of multiple protrusions,
A main body comprising a dielectric substrate including a conductive part for connecting a coil and a capacitor that crosses the shaft part, and a ground conductive part provided at the tips of a plurality of protrusions on the other side of the shaft part, and a shaft of the main body. a coil part that is wound between each protrusion of the main body, and each end of which is electrically connected to an adjacent conductive part for connecting a coil/capacitor, and a base of each protrusion on the other side of the main body and each ground conductive part; A chip capacitor disposed between, a lead terminal electrically connected to each protrusion on one side of the main body, a conductor electrically connecting each ground conductive part of the main body, and this conductor. A lumped constant electromagnetic delay line characterized in that it has a ground terminal connected to. (2) The lumped constant electromagnetic delay line according to claim (1), wherein both the conductive parts are provided on the main body by printed wiring. (3) The ground conductive part is provided on the main body along its longitudinal direction, and the conductive part for connecting the coil/capacitor is provided on both sides of a protrusion on one side of the main body and extends on the back side of the main body. The lumped constant electromagnetic delay line according to claim (1), wherein the end of the coil portion is fixed and electrically connected to the back surface of the main body.