JP2003332710A - Circuit board with embedded electric conductor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a circuit board with an embedded electric conductor as a circuit member for reducing size and weight of electronic equipment and for saving power, which facilitates manufacture, is appropriate for mass production and reduces manufacturing cost by forming a recessed groove in a substrate along a designed circuit pattern with embedded electric conductor. <P>SOLUTION: The recessed groove (2) is formed by means of a molding machine or a press machine or other means having a metallic mold of a circuit pattern designed in one surface or both surfaces, or one surface or both surfaces and a solid surface of an electric insulation substrate (1). The electric conductor (3) is inserted into the recessed groove (2) so as not to stick out therefrom, while allowing an end (3<SB>1</SB>) of the electric conductor (3) to protrude from an end (1<SB>1</SB>) of the substrate (1). <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductive embedded circuit board as a circuit member for reducing the size and weight of an electronic device, in which a groove is formed in a base along a wiring circuit pattern designed and a conductor is press-fitted. The present invention aims to reduce the manufacturing cost by facilitating the simple manufacturing, suitable for mass production, and by loosely fitting and inserting.

[0002]

2. Description of the Related Art Conventionally, an electric circuit of this type is based on a printed wiring board. In the printed wiring board, an electric circuit is formed by etching a metal layer formed by, for example, applying copper plating or copper foil to the surface of a substrate made of an insulating material.

[0003]

However, the above-mentioned printed wiring board is exclusively a plane circuit or plane wiring. Further, it is necessary to attach copper plating or copper foil to the flat surface of the substrate or to etch the metal layer, and the equipment is expensive, so the cost is high and the productivity is poor.

Therefore, conventionally, it is known to manufacture a circuit board by an injection molding machine so that a three-dimensional circuit or three-dimensional wiring can be formed in addition to a two-dimensional circuit or two-dimensional wiring like a printed wiring board. . (For example, (1) Japanese Patent Laid-Open No. 63-50482, (2) Japanese Patent Laid-Open No. 1-20798.
No. 9, gazette (3) JP 2001-77512 A).

However, the inventions relating to the production of the circuit board by the injection molding machine of the above-mentioned publications (2) and (3), the surface of the convex portion of the easily-platable plastic material and the inner peripheral surface of the hole are formed by conventional chemical roughening. However, the adhesion between the easily-platable plastic material and the metal plating layer could not be significantly improved. Further, the adhesion between the easily-platable plastic material and the metal layer has a drawback that it is deteriorated even when the mechanical strength characteristic of the base plastic material itself is weak.

Further, in the inventions of the above-mentioned publications (1) and (2), a concave groove is formed on a flat surface of a plastic substrate by a mold of a molding machine, and wiring is inserted into the concave groove. Moreover, it is not structured to be processed so as not to come out.

[0007] Next, in the circuit board relating to the production of a plastic molded product by the injection molding machine of the above-mentioned publication (3), "a primary molded body which is a skeleton member of a circuit component and a primary molded body On the outer surface of the plating-free part, a secondary molded body molded using a difficult-to-plate plastic material that is difficult to electroless plate, and an exposed part of the easily-platable plastics material for electroless plating of this secondary molded body After the roughening treatment with a chemical agent, in the method for producing a plastics molded article for performing electroless plating on the roughened surface, in the exposed portion of the easily plateable plastics material for performing electroless plating of the secondary molded body. The roughening treatment is performed so that the lower end of the roughening groove obtained by the roughening treatment is positioned 0.2 to 0.8 mm below the outer peripheral line of the secondary molded body. "

However, even in the invention of the above-mentioned publication (3), a concave groove is formed on the flat surface of the plastic substrate by a mold of a molding machine, and the wiring is press-fitted into the concave groove so as not to come out. It wasn't like that.

[0009]

Therefore, the present invention is provided to solve the conventional problems and achieve the objects of the invention.

A first aspect of the present invention is, in a wiring-embedded circuit board, after forming a groove along a circuit pattern designed on one side or both sides of an electrically insulating substrate, prevent the circuit wiring from coming out of the groove. It was charged.

A second aspect of the present invention is a wiring-embedded circuit board, such as a molding machine or a press machine provided with a die for a circuit pattern designed on one side or both sides of the electrically insulating substrate, or one side or both sides and a three-dimensional surface. After the concave groove is formed by an appropriate means, the conductor is inserted into the concave groove so as not to slip out, and the conductor end is projected from the end face of the electrically insulating substrate.

In a third aspect of the present invention, in a wiring-embedded circuit board, the electrically insulating base is cut from the plane of the base by an appropriate means such as a molding machine or a press machine equipped with a die for a circuit pattern designed on the bottom and the bottom. A concave groove is continuously formed on the bottom surface through the side end surface, and then the conductor is inserted so as not to come out of the concave groove.

According to a fourth aspect of the present invention, in a wiring-embedded circuit board, a plurality of electrically insulating substrates are arranged at a predetermined interval, and a molding having a designed circuit pattern die is provided on one surface of each electrically insulating substrate. After forming the concave groove by an appropriate means such as a machine or a press machine, the conductor is inserted so as not to come out from the concave groove, and is bent from one end of the set substrate.

[0014]

Embodiments of the present invention will now be described with reference to the drawings. 1 is a substrate (FIGS. 1 and 2, FIGS. 42 to 44), a plug socket (FIG. 30), or a three-dimensional convex mold 1 ′ (FIG. 3)
6) An electrically insulating substrate composed of a solid concave type 1 ″ (FIG. 37) and the like, which is mainly made of a plastic material, but it is also possible to use a material such as bakelite or ceramic. In FIGS. 1 to 21, 2 Is a concave groove having a square cross section formed on one surface (flat surface or bottom surface) of the electrically insulating substrate 1, and shows a linear groove, but it may be a curved line or a polygonal line. Conductivity made of thin copper wire, gold wire, silver, etc., which is press-fitted or loosely inserted into the groove 2 of 1 to prevent it from coming off by a small projection or a ridge, or sealed by a film or tape so as not to come out. A body is used, and in addition to a single wire, a plurality of ultrafine wire bodies that are stranded wires are used.

3 and 4, reference numeral 4 denotes a hooking protrusion formed on the inner wall surface of the concave groove 2. In FIGS. 5 and 6, 5 is pressed out by a punch-shaped depression forming male die 6 of a press machine to a position close to the edge of the concave groove in the plane of the base body 1, and the conductor 3 in the concave groove 2 is pulled out. It is a depression that supports not to. In this case, when the substrate 1 is plastic, high-frequency heat or other heat is conducted to the male die 6, and the pressing force of the male die 6 and the high-frequency heat deform a part or the whole of the edge of the groove. In some cases, the conductor 3 in the groove 2 may be more reliably prevented from departing.

In FIGS. 7 and 8, a conductor 7 in the concave groove 2 is pressed by pressing a rib molding male die 8 of a press machine at a position close to the edge of the concave groove 2 on the plane of the substrate 1.
It is a rib that supports it so that it does not come out. The recessed portion 5 and the rib 7 may be molded by the male molds 6 and 8 of the press machine, or may be molded by a molding mold in advance and the conductor 3 may be inserted into the groove 2 from its end surface. . Also in this case, when the substrate 1 is plastic, high-frequency heat or other heat is conducted to the male die 6, and a part of the edge of the groove is pressed by pressing force of the male die 6 and heating by high-frequency heat. By deforming the entire structure, the deviation of the conductor 3 in the concave groove 2 may be prevented more reliably.

In FIGS. 9 and 10, reference numeral 9 denotes an electrically insulating film or tape adhered to the flat surface of the base body 1 in which the conductor 3 is inserted in the concave groove 2. It is possible to arbitrarily replace the material with an electrically insulating material such as molding in two steps. 11 and 12, 10
Is a small protrusion formed on the outer diameter surface of the conductor 3, and the small protrusion locks the conductor 3 inserted in the groove 2 slightly wider than the outer diameter of the conductor 3 in the groove. Is done.

In FIG. 13, reference numeral 11 ₁ is a guide pin provided on one surface of the base 1, and the conductor 3 is inserted into the groove 2.
In addition, the positioning is performed when another substrate 1 is superposed on this. Reference numeral 11 ₂ is a concave portion provided on the other surface of the base body for inserting a guide pin. In FIG. 14 and FIG. 15, reference numeral 12 is another conductor or a conductive circuit such as a copper foil or a gold foil which is brought into contact with the conductor 3 inserted in the concave groove 2 of the substrate so as to intersect with the conductor 3. Figure 1
6 and 17, reference numeral 13 denotes a conductor which is bent in a hook shape at right angles to contact with the conductor 3 in the groove 2, and in this case, the groove of the hook-shaped tip portion 13 'where the conductor contacts The part is widened accordingly.

18 and 19, the groove 2'provided in the base 1 has a dovetail-shaped cross section. This is formed in advance with a molding die. In this case, the conductor 3 is inserted from the base end of the dovetail-shaped groove 2 '. 20 and 21, reference numeral 14 denotes a rib formed by shaping the left and right edges of the concave groove 2 upward, and pressing the rib with the rib forming male die 8 of the press machine to crush it toward the inside. However, the high frequency heat or other heat is conducted to the male die 8, and the rib 14 is deformed by the pressing force of the male die 8 and the high frequency heat to prevent the conductor 3 from deviating in the groove 2. It can also be done reliably.

22 and 23, the conductor 3 and another conductor 15 intersecting with the conductor 3 are inserted into the holes 16 and three-dimensionally stacked to form a circuit. 24 and 25, the conductor 3 and the conductor 17 that intersects with the conductor 3 are the same.
Another example is shown in which a circuit is formed by inserting three-dimensionally three-dimensionally into the holes 16 to form a circuit.

In FIG. 26, the row of a plurality of concave grooves 2 in which the conductor 3 is inserted in the plane of the base 1 is changed from wide width (or narrow width) to narrow width (or wide width) from one end to the other end. is there. In FIG. 27, a row of a plurality of concave grooves 2 is made to pass straight through the plane of the base body 1 from one end to the other end, and the angle in the lateral direction is changed by changing the angle from one end to the other end. It is molded to reach. In FIG. 28, in addition to passing a row of a plurality of concave grooves 2 on a plane in a straight line from one end to the other end, a hole 16 is opened downward on the way from one end to the other end, The shape is such that the end portion of the inserted conductor 3 is bent and passed.

29 to 33, the concave groove 2 is continuously formed on the plane and bottom surface of the base body 1 and the side end surface between them, and the conductor 3 is press-fitted therein. Further, in FIG. 33, reference numeral 18 denotes a socket portion in which a plurality of or singular conductors 18 ₁ are mounted, and the plug portion of the base body 1 in which the conductor 3 is inserted in the groove 2 is fitted into the socket portion. It has become. In FIG. 34, a hole 16 is formed in one end of a concave groove 2 formed in the plane of the base 1, and the end portion 3 ₁ of the conductor 3 is inserted into the hole 16. The Figure 35 is superposed an auxiliary substrate _{1 1} to the bottom surface of the base body 1 in FIG. 34, the conductor 3
The end 3 _{1 of the} is soldered.

In FIG. 36, the concave groove 2 is continuously formed in the three-dimensional convex base 1'in the order of vertical surface / plane / vertical surface / plane / vertical surface. In FIG. 37, the concave groove 2 is continuously formed in the order of the vertical surface and the flat surface in the three-dimensional concave substrate 1 ″, and the conductor 3 is inserted therein.

38 to 40, the conductor 3 is three-dimensionally bent. That is, the plurality of base bodies 1 loaded in the conductor groove 2 are arranged with a predetermined gap G therebetween. The resin plates 9'and 9 "are attached to the flat surface of the base body 1 inserted in the three-dimensionally bent conductor 3.

In FIG. 41, a window hole 19 is opened in the central portion of the rectangular base 1 and is inserted into the groove 2 and the film or plate 9 is attached to the flat surface of the base to prevent the conductor 3 from deviating. In addition, the conductor 3 is bent downward along the inner wall of the window hole.

42 to 46, in the plane and bottom surface of the rectangular base 1, the concave groove 2 is formed in the outer peripheral edge, and a large number of two pairs of projections 20, 20 are formed in predetermined places in the outer peripheral edge. The space between the protrusions serves as a groove. In addition, a single or a plurality of window holes 19 are formed, and conductors are connected by welding, soldering, or the like at the positions of the window holes. In addition, around the window hole 19, a raised portion having the same height as the outer peripheral edge side is formed, and the concave groove 3 is formed therein.

[0027]

[Processing Example] Next, a processing example of the present invention will be described. [Molding of Substrate and Recessed Groove] By injection molding of an injection molding machine, a target substrate or a plug / socket or a three-dimensional convex / three-dimensional concave substrate 1 is molded, and a conductor is provided by a mold having a set circuit pattern. The concave groove 2 for embedding 3 is formed.

"Processing Example 1" A conductor 3 is inserted into a linear concave groove 2 formed on one surface of a substrate 1. (FIGS. 1 and 2) “Processing example 2” The hooking projections 4 are provided at appropriate places on the inner surface of the groove 2.
Is provided, and when it is loosely fitted into the concave groove 2 wider than the diameter of the conductor 3, it is supported by the protrusion 4 so as not to come out.
(FIGS. 3 and 4) “Processing Example 3” A depressed portion 5 is formed at a position close to both edges of the recessed groove 2, and this portion is pressed by a depressed molding male die 6 of the press machine, or the male die 6 is pressed. The conductor 3 loaded in the concave groove 2 is supported by the depression 5 by pressing and heating with a combination of the high frequency heat and other heat so as not to come out.
(Figs. 5 and 6)

[Processing Example 4] A groove groove 7 is formed at a position close to both edges of the groove 2, and this portion is pressed by a rib forming male die 8 of a press machine to be accommodated in the groove 2. The conductor 3 is supported so as not to come out. (FIGS. 7 and 8) Also in this case, the pressing in the rib forming male die 8 is combined with the high frequency heat or other heat conducted to the male die, and the conductor in the concave groove 2 is formed by pressing and heating. It is also possible to embed 3 more reliably. "Processing Example 5" An electric insulating film or tape 9 is attached to the flat surface of the base body 1 in which the conductor 3 is press-fitted or loosely fitted into the groove 2 of FIG. (FIGS. 9 and 10) “Processing Example 6” The small protrusions 10 formed on the outer diameter of the electric conductor 3 are hooked on the inner wall of the concave groove 2 so as not to come out when the electric conductor 3 is inserted. (Figure 11, Figure 12)

"Processing Example 7" A predetermined number of bases 1 each having a conductor 3 inserted in a groove ₂ are stacked and positioned by guide pins 11 ₁ and pin insertion recesses 11 ₂ provided on each base. There is. (FIG. 13) “Processing example 8” Another electric conductor or an electric circuit 12 such as a copper foil or a gold foil is contacted and fixed orthogonally to the electric conductor 3 press-fitted into the groove 2. (FIGS. 14 and 15) “Processing Example 9” The conductor 13 is fixed along the conductor 3 inserted in the groove 2 with its end 13 ′ bent in a hook shape at right angles being in contact. (Figs. 16 and 17)

"Processing Example 10" A concave groove is formed into a dovetail shape 2 ', and a conductor 3 is inserted into the dovetail groove 2'from its end. (FIGS. 18 and 19) “Processing Example 11” The upward ribs 14 or upward projections formed on both side edges of the recessed groove 2 in which the conductor 3 is embedded are formed into a rib shape or a punch shape of a press machine. Male type 8 '
The conductor 3 is crushed and fixed so that the conductor 3 does not come out of the groove. (FIGS. 20 and 21) Even in this case, the pressing process by the rib-shaped or punch-shaped male mold 8 is combined with the high-frequency heat or other heat conducted to the male mold, and the concave groove is formed by pressing and heating. Two
It is also possible to more reliably embed the conductor 3 inside. "Processing Example 12" The holes 16 of the base 1 are made orthogonal to each other so that the other conductor 15 is in contact between the two conductors 3 and 3 press-fitted into the two rows of concave grooves 2.2 formed in the base 1. To insert.
(Figure 22, Figure 23)

"Processing Example 13" Two substrates 1 having conductors 3 press-fitted into a flat groove 2 are stacked in two stages, and the conductors in the grooves are arranged at orthogonal positions, and the orthogonal The conductor 17 so as to come into contact with the conductor 3
It is inserted into the hole 16 formed in the. (FIGS. 24 and 25) “Processing Example 14” The groove 2 is formed from one end of the base 1 toward the other end.
The column is changed from a narrow width to a wide width and is molded, and the conductor 3 is press-fitted into each groove. (FIG. 26) “Processing example 15” The groove 2 is formed from one end of the base 1 toward the other end.
In addition to linearly molding the row of, the wire is bent outward at a right angle from one end to the other end and shaped so as to reach the end, and the conductor 3 is attached to each groove so as not to come out. To enter.
(Figure 27)

"Processing Example 16" In addition to linearly forming a row of the recessed grooves 2 from one end of the base 1 to the other end, a hole 16 is formed in the recessed groove 2 downwardly on the way from one end to the other end. The inserted conductor 3 is inserted into the hole. (FIG. 28) “Processing Example 17” The groove 2 is formed on both sides (plane and bottom) of the base 1.
In addition to molding, a concave groove that continuously connects concave grooves on both sides is molded on the side end surface of the base body 1, and the conductor 3 is inserted therein so as not to come out. (FIGS. 29 to 32) and the substrate 1 of the a plug made of a socket portion 18 having a conductor 18 ₁ in contact with the 3 to the conductor of the plug, so as to fit them to each other .
(Figure 33)

"Processing Example 18" The concave groove 2 is formed on the flat surface of the base body 1, a hole 16 is opened at the end of the concave groove, the conductor 3 is press-fitted into the concave groove, and the end of the conductor is formed at the hole 16. To insert.
(Figure 34) "processing Example 19" the "working example 18" on the bottom surface of the base body 1 by superposing circuit auxiliary board 1 ₁ stuck in the end portion 3 ₁ the circuit conductor 3 inserted through the hole 16 Solder to the base. (Fig. 35)

[Processing Example 20] The three-dimensional convex base 1'is formed by continuously forming the concave grooves 2 in the vertical direction and the horizontal direction, and the electric conductor 3 is inserted thereinto so as not to come out. (FIG. 36) “Processing Example 21” Vertical and horizontal concave grooves 2 are continuously formed on the inner surface of a three-dimensional concave substrate 1 ″, and holes 16 are formed in the bottom and side surfaces, and the conductor 3 is formed in the concave grooves. Insert it so that it will not come out, and insert it into each hole 16 (FIG. 37).

[Processing Example 22] A plurality of insulating bases 1 are arranged with a predetermined gap G, and the conductor 3 is inserted into the recessed groove 2 provided on the plane of each insulating base so as not to come out of the recessed groove. In addition, the thin resin plate 9'and the resin member 9 "are attached to the flat surface of each base and the bent portion of the conductor 3 or molded with resin (FIG. 38).
(Fig. 40)

"Processing Example 22" The conductor 3 mounted in the concave groove 2 provided on the flat surface of the rectangular base 1 is bent downward from the hole 19 at the center of the base, and the electric insulating film or tape 9 is placed on the flat surface of the base. Stick or mold with resin. (Fig. 41)

[Processing Example 23] A pair of left and right protrusions 20 and 20 for receiving the conductor 3 by fitting, sandwiching, press-fitting or the like on the flat and bottom surfaces of the rectangular base body 1 and the raised groove on the outer peripheral edge of the protrusion 20. What is molded and then charged with the conductor 3 is shown. Among them, in the part of the window hole 19,
The conductors 3 charged in the concave grooves 2 provided on both the flat surface and the bottom surface are brought into contact with each other, and the contact portions are connected by welding, welding or the like. Further, the conductor 3 is provided between the projections 20 and 20 and the concave groove 2.
Then, the base and the bottom of the base are covered with a film, a resin sheet, or a plate-shaped electric insulator.
(Figs. 42-46)

[0039]

Since the present invention is constructed as described above, it has the following effects. That is, in a circuit board in which a conductor is embedded as a circuit member aiming at downsizing, weight saving, or omission of various electronic devices, a groove is formed in the board along a designed circuit pattern, and the conductor is embedded in the groove to manufacture the circuit board. It is simple and suitable for mass production, and the production cost can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view of a conductor-embedded circuit board according to the present invention.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a plan view showing a modified example of FIG.

FIG. 4 is a sectional view taken along line 4-4 of FIG.

5 is a plan view showing another modification of FIG. 1. FIG.

6 is a sectional view taken along line 6-6 of FIG.

FIG. 7 is a plan view showing still another modified example of FIG.

8 is a sectional view taken along line 8-8 of FIG.

FIG. 9 is a plan view in which an electric insulating film or tape is attached to the flat surface of the groove of FIG.

10 is a sectional view taken along the line 10-10 of FIG.

FIG. 11 is a plan view in which a protrusion is provided on an outer diameter surface of a conductor in a concave groove and press-fitted therein.

12 is a cross-sectional view taken along line 12-12 of FIG.

FIG. 13 is a vertical cross-sectional view showing a state in which a base body in which a conductor is inserted is stacked in a groove.

FIG. 14 is a plan view showing a state where another conductor is cross-contacted with the conductor inserted in the groove of the base body.

15 is a sectional view taken along line 15-15 of FIG.

FIG. 16 is a plan view in which the tip of a right-angled hook-shaped conductor is placed along the conductor inserted in the concave groove of the base body and brought into contact therewith.

17 is a sectional view taken along line 17-17 of FIG.

FIG. 18 is a plan view of a substrate in which a conductor is embedded in a groove having a dovetail-shaped cross section.

19 is a cross-sectional view taken along the line 19-19 of FIG.

FIG. 20 is a vertical cross-sectional view in which an upward rib is formed on the edge of the concave groove of the substrate.

FIG. 21 is a vertical cross-sectional view showing a state where the ribs at the edges of the concave groove in FIG. 20 are crushed.

FIG. 22 is a plan view in which another conductor is orthogonally contacted with the conductor in the concave groove of the base body.

23 is a cross-sectional view taken along line 23-23 of FIG.

FIG. 24 is a plan view showing another modified example of FIG. 22.

25 is a cross-sectional view taken along the line 25-25 of FIG.

FIG. 26 is a plan view showing a state in which a plurality of grooves is changed from one end to the other end from a narrow width to a wide width.

FIG. 27 is a plan view showing a state in which a plurality of concave groove rows are linearly passed from one end to the other end, and a plurality of concave groove rows are bent at a right angle in the middle and passed through a side end surface.

FIG. 28 is a plan view showing a state in which a plurality of concave groove rows are linearly passed from one end to the other end, and also a state where they are passed downward (or upward) on the way.

FIG. 29 is a plan view in which the concave groove of the base body is continuously formed from the flat surface to the bottom surface.

30 is a sectional view taken along the line 30-30 of FIG.

FIG. 31 is a plan view in which the concave groove of the base body is continuously formed from the flat surface to the bottom surface, and the conductor is continuously wound around the concave groove from the flat surface to the bottom surface.

32 is a sectional view taken along the line 32-32 of FIG.

FIG. 33 is a perspective view of a socket portion that fits with the base body side of FIG. 32 as a plug.

FIG. 34 is a vertical cross-sectional view showing a state in which a hole is opened in the middle of a concave groove formed on the flat surface of a base body and an end portion of a conductor is inserted into the hole.

35 is a vertical cross-sectional view in which a circuit auxiliary board is overlaid on the bottom surface of the base body of FIG. 34.

FIG. 36 is a perspective view in which a plurality of concave groove rows are continuously formed in a vertical direction and a horizontal direction on the surface of a three-dimensional convex base.

FIG. 37 is a perspective view in which a plurality of concave groove rows are continuously formed in the vertical direction and the horizontal direction on the inner surface of a three-dimensional concave base.

FIG. 38 is a plan view in which a conductor is attached to a plurality of electrically insulating bases arranged at a predetermined interval.

39 is a sectional view taken along the line 39-39 of FIG.

FIG. 40 is a front view of the conductor of FIG. 38 bent from between a plurality of bases.

FIG. 41 is a plan view in which a conductor mounted on a rectangular base is bent downward from a central hole.

FIG. 42 is a plan view in which a pair of left and right protrusions for receiving a conductor and outer edges with concave grooves are formed on a circuit board having window holes, and the conductor is set on the outer periphery.

43 is a front view of FIG. 42. FIG.

FIG. 44 is a side view of FIG. 42.

FIG. 45 is an enlarged plan view of a conductor joint portion in the window hole portion of FIG. 42.

FIG. 46 is a cross-sectional view taken along the line 46-46 of FIG. 42.

47 is a perspective view of FIG. 46. FIG.

[Explanation of symbols]

1 Electrically insulating substrate consisting of substrate or plug / socket or three-dimensional convex / three concave type 2 Grooves formed on the plane of the substrate 3 Conductor 4 consisting of thin copper wire, gold wire, silver wire, etc. on the inner wall surface of the groove Recessed protrusion 5 of molded conductor 5 Recessed portion for fixing conductor 6 Recessed male mold for press machine 7 Rib for fixing conductor in concave groove 8 Male rib mold for press machine 9 Electrical insulation Film or tape or plate 10 Small protrusions 11 formed on the outer diameter surface of a conductor 11 Guide pins 12 for positioning when bases are stacked Conductive circuit or conductor 13 such as copper foil or gold foil Bending into a hook shape Conductor 14 brought into contact with the ribs 15 Ribs formed with the right and left edges of the groove facing upwards 15 Conductor 16 Holes formed in the base and circuit board 17 Conductor 18 Flat male die 19 of press machine Hole formed in the center of the base

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[Procedure amendment]

[Submission date] April 24, 2002 (2002.4.2)
4)

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 18

[Correction method] Change

[Correction content]

FIG. 18 ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] April 24, 2002 (2002.4.2)
4)

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] Fig. 42

[Correction method] Change

[Correction content]

FIG. 42

Claims (4)

[Claims] 1. A concave groove (2) is formed along a circuit pattern designed on one surface or both surfaces of an electrically insulating substrate (1), or one surface or both surfaces and a three-dimensional surface, and then a conductor (3) is formed on the concave surface. A conductor-embedded circuit board characterized by being inserted into a groove. 2. The concave groove (2) is formed by a molding machine, a press machine or other means equipped with a die of a circuit pattern designed on one side or both sides of the electrically insulating substrate (1), or one side or both sides and a three-dimensional surface. After molding, the conductor (3) is inserted into the groove so as not to come out, and the conductor end (3 ₁ ) is projected from the end face (1 ₁ ) of the electrically insulating substrate. Body embedded circuit board. 3. The electrically insulating substrate (1) is continuously recessed from the plane of the substrate through the side end faces to the bottom by means such as a molding machine or a press machine equipped with molds for circuit patterns designed on both sides. A conductor-embedded circuit board, characterized in that the groove (2) is formed and the conductor (3) is inserted so as not to come out of the concave groove. 4. A plurality of electrically insulating substrates (1) are arranged at predetermined intervals (G).
After forming the concave groove (2) by means such as a molding machine or a press machine equipped with a die for a circuit pattern designed on one side of each base (1), the conductor (3) is formed. A conductor-embedded circuit board, which is inserted into the groove and bent from one end of a set base.