JPH0537448Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to LC composite parts, in which electrodes are provided on both sides of a flat dielectric substrate to form a capacitor, and the spacing is maintained in the width direction of the dielectric substrate. By winding a plurality of coils around the coil, the entire structure can be made smaller and thinner, and the coil installation work can be carried out more efficiently.

Conventional technology For example, as shown in FIG. 6, capacitor C ₁ ,
When obtaining an LC circuit comprising C ₂ and C ₃ and inductors L ₁ , L ₂ , L ₃ and L ₄ , as shown in FIGS. 7 and 8, both sides of the dielectric substrate 1 made of dielectric ceramic are Conductor patterns 2 and 3 having a predetermined pattern are deposited and formed, and the capacitors C ₁ to C ₃ are formed using the overlapping area of the conductor patterns 2 and 3 facing each other with the dielectric substrate 1 in between. , air core coils 41 to 44, which become inductors _L1 to _L4 , are arranged on one side of the dielectric substrate 1, and these air core coils 4
An LC composite component is known in which the end portions of air core coils 1 to 44 are assembled by soldering and fixing them to the conductor pattern 2 or 3 so as to have the circuit configuration shown in FIG.

Reference numeral 5 denotes an insulating coating layer made of epoxy resin, which is provided to increase the dielectric strength between the conductor pattern 3 formed on the dielectric substrate 1 and the air core coils 41 to 44 arranged thereon. . 6 is an insulating exterior that covers the entire body, 71 to 73 are lead wires, and the sixth
This corresponds to terminals a to b in the figure.

The conductor patterns 2 and 3 are, for example, as shown in FIG.
The pattern arrangement is as shown in Figure 0. This conventional example shows an LC composite component with a circuit configuration shown in _FIG . 31, a conductor pattern 32 which becomes one of the electrodes of capacitor _C2 , a conductor pattern 33 which becomes one of the electrodes of capacitor _C3 , a relay conductor pattern 34, a relay conductor pattern 35 which continues to conductor patterns 31 and 32, and It is formed by a relay conductor pattern 36 that is continuous with the conductor pattern 33.

On the other hand, the conductor pattern 2 on the back side of the dielectric substrate 1
A conductor pattern 21 forms a capacitor C ₁ together with a conductor pattern 31, a conductor pattern 22 forms a capacitor C ₂ together with a conductor pattern 32, a conductor pattern 23 forms a capacitor C ₃ together with a conductor pattern 33, a relay conductor pattern 24, and a conductor. Relay conductor pattern 2 continuous to pattern 22
5 and a relay conductor pattern 26.

Air core coil 41 which becomes inductor L ₁ in Fig. 6
between the relay conductor patterns 35, 26 and the conductor pattern 21 on the back side, and the air core coil 42, which will become the inductor _L2 , between the relay conductor patterns 35, 26 and the relay conductor patterns 34, 24. The air core coil 43 which becomes the inductor L ₃ is connected to the relay conductor patterns 36, 25 and the relay conductor patterns 34, 24.
Furthermore, an air core coil 44, which becomes an inductor _L4 , is electrically connected between the relay conductor patterns 36, 25 and the conductor pattern 23, respectively. As a result, an LC composite component having the circuit configuration shown in FIG. 6 and the structure shown in FIGS. 7 and 8 is obtained.

When installing the air core coils 41 to 44, as shown in FIGS. 9 and 10, the dielectric substrate 1
A mounting hole 101 is provided in advance at a predetermined position. Then, as shown in FIG. 11, the ends 411 to 441 of the air core coils 41 to 44 are inserted into the mounting hole 101 so as to penetrate from one side of the dielectric substrate 1 to the other side. After that, the portions protruding to the other side are bent to prevent the air core coils 41 to 44 from falling off, and then fixed by soldering.

Problems to be solved by the invention However, the above-mentioned conventional LC composite parts had the following problems.

(a) When installing the air-core coils 41 to 44, a mounting hole 101 is provided at a predetermined position on the dielectric substrate 1, and a mounting hole 101 is inserted into the mounting hole 101 from one side of the dielectric substrate 1 to the other side. so that it penetrates to the surface side,
Coil terminals 411 to 4 of air core coils 41 to 44
After inserting the coil 41, it was necessary to bend the part protruding to the other side, so the air core coil 41 was
There were problems in that the installation work of No. 44 required a long time, the work efficiency was poor, and mass productivity was lacking. Incidentally, when the air-core coils 41 to 44 are attached manually, it takes about 20 to 30 seconds to attach one air-core coil.

(b) Since air core coils 41 to 44 are used,
The overall thickness increases due to the winding diameter and wire diameter, making it difficult to reduce the size and thickness.

(c) It is possible to reduce the size of the air-core coils 41-44 by reducing the wire diameter and increasing the number of turns, but this makes it easier for the air-core coils 41-44 to deform, become entangled, etc., and makes it difficult to install the coils. becomes troublesome.

Means for Solving the Problems In order to solve the above-mentioned conventional problems, the present invention provides an LC composite component in which a capacitor and a plurality of coils are provided on a flat dielectric substrate, The substrate has coil winding grooves formed at intervals on both edges in the width direction, and a groove for guiding the coil terminal between the coil winding grooves on one edge side in the width direction, The capacitor is formed by providing electrodes on both sides of the dielectric substrate, and the electrodes are provided extending near the coil end guide groove, and the coil is formed in the dielectric substrate in the coil winding groove. The coil terminal is wound in the width direction along the outer surface of the substrate, and the coil terminal is guided into the adjacent coil winding groove through the front coil terminal guide groove, and is soldered to the electrode near the coil terminal guide groove. <Operation> When forming a plurality of coils, the coils are wound in the width direction along the outer surface of the dielectric substrate on which the capacitor is formed, and at intervals along the length direction of the dielectric substrate. When arranged, the thickness of the coil portion is reduced to a value determined by the wire diameter, so the overall shape can be significantly reduced in size and thickness.

Moreover, since the dielectric substrate serves as the coil winding frame,
Even if the coil is made of a wire material with a small diameter, the coil will not be deformed or entangled.

Furthermore, by winding multiple coils along the outer surface of a dielectric substrate and arranging them at intervals along their length, the terminals of the coils can be electrically connected to the capacitor on the surface of the dielectric substrate. It is also possible to have a structure in which a single wire is wound continuously, which greatly simplifies the coil installation work.

Coil winding grooves are formed on both ends of the dielectric substrate in the width direction, and the coil is wound within the coil winding grooves. With a structure like this,
There is no possibility of the coil winding collapsing.

Furthermore, a groove for guiding the coil terminal is formed on one end edge in the width direction of the dielectric substrate at a position approximately in the middle between the coil winding grooves, and the coil terminal is guided into these grooves. There is. With such a structure, the coil terminals will not be misaligned.
Furthermore, the grooves are arranged on the same edge side of the dielectric substrate, and the electrode of the capacitor is extended near the coil terminal guide groove, so that one edge side with the groove can be immersed in the solder bath. Accordingly, the coil terminals can be simultaneously soldered and fixed to the electrode pattern on the dielectric substrate.

Example Figure 1 is a front view of the LC composite part according to the present invention.
FIG. 2 is a side view, and FIG. 3 is a rear view. In the figure, the same reference numerals as in FIGS. 7 and 8 indicate the same components.

The plurality of coils 41 to 44 are made of enameled wire or the like and are wound along the outer surface of the flat dielectric substrate 1 in the width direction thereof with a required number of turns. Each of the plurality of coils 41 to 44 is arranged at intervals along the length direction of the dielectric substrate 1.

With such a structure, as shown in FIG. 2, the thickness t ₂ of the coils 41 to 44 as seen from the outside is reduced to the thickness t ₁ of the dielectric substrate 1 and the coil wire diameter, and this The overall thickness t including the coating thickness of the insulating protective film 5 becomes significantly thinner.

Moreover, since the dielectric substrate 1 serves as a coil winding frame, even if the coils 41 to 44 are made of wire rods with a small diameter, the coils will not be deformed or entangled.

Further, since the coils 41 to 44 are wound along the surface of the dielectric substrate 1, conductive connection can be made on the surface of the dielectric substrate 1 when the coil terminals are connected to a capacitor. Therefore, the work of connecting the coil terminals becomes easier.

Coil winding grooves 102 and 103 are formed by concave portions on both ends of the dielectric substrate 1 in the width direction, and the coils 41 to 44 are formed in the coil winding grooves 10.
2,103. With such a structure, the coils 41 to 44 do not collapse. In addition, a groove 104 is formed at one end in the width direction of the dielectric substrate 1 at a position approximately in the middle between the coil winding grooves 102 and 102. ~4
41 to 442 are introduced and guided into these grooves 104. With such a structure, the coil terminals 411, 412 to 411 to 442 will not be misaligned. Furthermore, since the grooves 104 are arranged on the same edge side of the dielectric substrate 1, the coil can be easily removed by immersing one edge side of the dielectric substrate 1 with a width d (see FIGS. 1 and 3) into a solder bath. Terminal 41
1,412 to 441 to 442 can be simultaneously soldered and fixed to the conductor pattern on the dielectric substrate 1.

In forming the windings of the coils 41 to 44, a single wire made of enamelled wire or the like is used, and this is wound in succession in the coil winding grooves 102 and 103, and also through the groove 104. Coil terminal 41
1,412-441-442. With such a winding structure, the coils 41 to 44 can be continuously and efficiently wound by automatic winding or the like, improving mass productivity.

The conductor patterns 2 and 3 have an arrangement pattern as shown in FIGS. 4 and 5, for example. first,
The conductor pattern 3 on the front side of the dielectric substrate 1 has a fourth
As shown in the figure, a conductor pattern 31 that becomes one of the electrodes of the capacitor _C1 , this conductor pattern 31
A conductor pattern 32 that is continuous to the conductor pattern 32 and becomes one of the electrodes of the capacitor C ₂ , a conductor pattern 33 that becomes one of the electrodes of the capacitor C ₃ , a conductor pattern 34 that is continuous to the conductor pattern 31, and a conductor pattern for relaying between the conductor patterns 31 and 32. 35 and conductor pattern 33
It is formed by a conductor pattern 36 that is continuous. The conductor pattern 34 is formed near the groove 104 that guides the coil terminal 411, and the conductor pattern 34
6 is formed near the groove 104 that guides the coil terminal 442.

On the other hand, the conductor pattern 2 on the back side of the dielectric substrate 1
As shown in FIG. 5, the conductor pattern 21 forms the capacitor _C1 together with the conductor pattern 31;
A conductor pattern 22 that forms a capacitor C ₂ together with the conductor pattern 32, a conductor pattern 23 that forms a capacitor C ₃ together with the conductor pattern 33, a conductor pattern 24 that continues to the conductor pattern 21, and a relay conductor pattern 25 between the conductor patterns 22-3. ,
It is formed by a conductor pattern 26 and a conductor pattern 27 that are continuous with the conductor pattern 23. The conductor pattern 24 is formed near the groove 104 that guides the coil terminals 412 and 421.
6 is a groove 10 that guides the coil terminals 441, 432.
Further, the conductive pattern 27 is formed near the groove 104 for guiding the coil terminals 422 and 431.

The coil 41, which becomes the inductor _L1 in FIG. 6, has a coil end 411 bent from the front side to the back side at the groove 104, temporarily fixed, and soldered to the conductor pattern 34 on the front side. Coil terminal 4
12 is led out from the back side to the front side in the groove 104 where the conductive pattern 26 is located, and is soldered to the conductive pattern 26 on the back side. The coil terminal 431 of the coil 42 which becomes the inductor L ₂ is continuous with the coil terminal 412 and soldered to the conductor pattern 26 . The coil terminal 432 is connected to the conductor pattern 27
It is guided from the back side to the front side through a certain groove 104, and is soldered to the conductor pattern 27 on the back side. The coil terminal 431 of the coil 42 which becomes the inductor L ₂ is continuous with the coil terminal 412 and soldered to the conductor pattern 26 . The coil terminal 432 is led from the back side to the front side through the groove 104 where the conductor pattern 27 is located, and is soldered to the conductor pattern 27 on the back side. The coil terminal 431 of the coil 42 which becomes the inductor L ₂ is continuous with the coil terminal 412 and soldered to the conductor pattern 26 . The coil terminal 432 is led from the back side to the front side through the groove 104 where the conductor pattern 27 is located, and is soldered to the conductor pattern 27 on the back side. As a result, an LC composite component having the circuit configuration shown in FIG. 6 is obtained. Coil terminal 41
For soldering of Nos. 1,412 to 441 to 442, as described above, one end edge side with the groove 104 is immersed in a solder bath with a width d.

Effects of the invention As described above, the invention provides the following effects.

(a) A plurality of coils are wound in the width direction along the outer surface of the dielectric substrate, and are arranged at intervals along the length direction of the dielectric substrate, so that the thickness of the coil portion is By reducing the wire diameter to a value determined by the wire diameter, it is possible to provide an LC composite component whose overall shape is significantly smaller and thinner.

(b) LC that does not cause coil deformation or entanglement even when the coil is made of wire with a small diameter
We can provide composite parts.

(c) The coil terminal can be electrically connected to the capacitor on the surface of the dielectric substrate, and it is also possible to have a coil structure in which a single wire is wound continuously, making it easy to install the coil. We can provide LC composite parts that can be self-winding.

[Brief explanation of the drawing]

Figure 1 is a front view of the LC composite component according to the present invention.
Figure 2 is also a side view, Figure 3 is also a rear view,
FIG. 4 is a front view showing the conductor pattern arrangement of the LC composite component according to the present invention, FIG. 5 is a rear view thereof, and FIG. 6 is an electric circuit diagram of an example of the LC composite component.
Figure 7 is a partially damaged front view of a conventional LC composite part.
Figure 8 is a cross-sectional view taken along line B ₁ - B ₁ in Figure 7;
FIG. 9 is a front view showing the conductor pattern arrangement of a conventional LC composite component, FIG. 10 is a rear view thereof, and FIG. 11 is a partially enlarged view showing problems with the conventional LC composite component. 1... Dielectric substrate, 2, 3... Conductor pattern,
41-44...Coil.

Claims (1)

[Claims for Utility Model Registration] (1) An LC composite component in which a capacitor and a plurality of coils are provided on a flat dielectric substrate, wherein the dielectric substrate is arranged at intervals on both edges in the width direction. The capacitor has a coil winding groove formed by the coil winding groove, and a coil end guide groove between the coil winding grooves on one end edge side in the width direction, and the capacitor has electrodes provided on both sides of the dielectric substrate. the electrode is provided extending near the coil end guide groove, the coil is wound in the width direction along the outer surface of the dielectric substrate within the coil winding groove, The LC composite component, wherein the coil end is guided into the adjacent coil winding groove through a front coil end guide groove, and is soldered to the electrode near the coil end guide groove. (2) The LC according to claim 1 of the utility model registration claim, wherein the plurality of coils are continuously formed from one wire.
Composite parts.