JPS5836145A - Laminated wiring unit - Google Patents

Abstract

PURPOSE:To reduce the size of a laminated wiring unit by forming a connecting conductor in the vicinity of the end of an insulating sheet formed with a pattern conductor, laminating the conductors, then forming a conductor layer over the end of the laminate and connecting as desired, thereby reducing the space required to connected between the sheets. CONSTITUTION:Pattern conductors 35 are formed as drive coils at both side surfaces of an insulating sheet 31, thereby forming sheet coils 41, 42, 44. In this case, a connecting conductor 36 is simultaneously formed at the peripheral edge of the sheet 31, and necessary coil end 46 are connected. As to the sheet coil which is not required fo the electric connection, the connecting conductor is isolated from the pattern conductor on the sheet coil. After the required number of the sheet coils are laminated, a conductor layer 62 is formed along the laminating direction of the edge of the laminated, and necessary electric connection between the sheet coils is performed.

Description

[Detailed Description of the Invention] This invention is used, for example, in drive coils or power generation coils of brushless motors, linear motors, etc., and pattern conductors are formed like a laminated sheet coil in which a plurality of sheet coils are laminated and bonded and solidified. This invention relates to a laminated wiring body in which insulating sheets are laminated.

In order to increase the space factor of the conductor in the cross section of the sheet coil, the insulating layer is made as thin as possible, for example, in the form of a groove of several microns.

When stacking multiple sheet coils to make a laminated sheet coil, at least two leads were pulled out from each sheet coil and connected by soldering etc. in order to make connections between each sheet coil. . Therefore, as the number of laminated layers increases, the space for connection increases proportionally, and this connection part is a part that does not participate in electrical action as a coil. The result is contrary to the purpose of increasing the

That is, in the conventional laminated sheet coil, as shown in FIG. 1, a coil 112 is formed on an insulating sheet 111, and n sheets 1131 to 113n of sheet coils 113 are laminated and bonded and solidified. A lead wire portion 114 is formed to protrude from the stacked body of each sheet coil 1131 to 113n, and adjacent lead wire portions 114 are connected to each other in series so that the entire coil 112 is connected in series. be done. In this case, the lead wire portions 114 are sequentially shifted so as not to overlap so as to facilitate the connection of the lead wire portions 114 and to avoid connection with unnecessary lead wire portions. Therefore, the space for connection increases in proportion to the number of 1130 sheet coils stacked.

SUMMARY OF THE INVENTION An object of the present invention is to provide a laminated wiring body which can reduce the space required for connection between insulating sheets on which patterned conductors are formed, and which can be made compact as a whole.

According to this invention, insulating sheets on which patterned conductors are formed are stacked to form a laminate, and at the connection part between the sheets, the connection conductor is connected to the conductor on each insulating sheet, and the connection conductor corresponds to the connection part. and each insulating sheet interposed between these extended connecting conductors has a connecting conductor that is not connected to the pattern conductor on the insulating sheet. A conductive layer is formed in the thickness direction of the laminate so as to be in continuous contact with the edges of the insulating sheet and the connecting conductor, and connections between the patterned conductors on these insulating sheets are made. be exposed. Therefore, there is no need to lead out the terminal portion from the laminate for connection, and the structure can be made compact.

Before explaining the present invention, a general configuration example of a motor to which the laminated wiring body according to the present invention is applied will be explained first. FIG. 2 shows an axial flux type motor. The motor case 11 is made of a flat magnetic material. A rotating shaft 12 is inserted through the motor case 11, and the rotating shaft 12 is rotated by bearings 13 and 14. It is freely held in the motor case 11. Rotating shaft 12 in motor case II
A rotor 15 made of a flat permanent magnet is attached to the top, and magnetic poles that generate magnetic flux parallel to the rotating shaft 12 are formed on the end face of the rotor 15 at equal angular intervals around the rotating shaft 12. ing. A first phase drive coil 16 and a second phase drive coil 17 are provided opposite the ends of the rotor 15, respectively. Rotor 15 during wiring for these drive coils
Drive coils 16 and 17 are mounted on a wiring board 18 on which an angular position detecting element is mounted. The first phase drive coil 16 is configured by, for example, a plurality of coils 19 arranged at equal angular intervals on a circumference centered on the rotating shaft 12, as shown in FIG. In this example, eight coils 19 are used, and these are of the same size, and the relationship between the coils 19 and the magnetic poles of the permanent magnet 15 is as shown in the figure. In this case, the number of poles and the number of coils are selected to be the same so that the centers of the coils 19 face each other. The second phase coil 17
It is arranged angularly shifted from the phase coil 16 by a half pitch of the pitch of the coil 19 .

In this axial 7-lux type motor, the magnetic flux parallel to the rotating shaft 12 generated during the four-day period 15 passes through the first phase coil and the second phase coil.
It is configured to pass through the phase coil. These first
The rotation of the motor by supplying power to the phase coils and the second phase coil, and the rotational operation of the rotor 15, are conventionally known, so their explanation will be omitted.

In such a motor, for example, in order to perform speed control, a speed detection coil 21 for detecting the rotational speed of the motor is attached to the substrate 18, and the rotational magnetic flux of the rerotor 15 is controlled by the speed detection coil 21. is detected at a higher frequency than the rotation itself by the drive coil.

Conventionally, the speed detection coil 21 has been attached to an insulating substrate and then attached to the substrate 18, and the space it occupies is relatively large.

4 and 5 Lines An example of a sheet coil as a drive coil used in the present invention is shown, and FIG. 4 shows one side, for example, the front side, and FIG. 5 shows the back side. Insulation sheet 3
In this example, a conductive layer, for example, a copper foil 32, is formed over the entire surface of the copper foil 32, and the coils 11 to 1 are arranged adjacent to each other on the same circle with a point 33 as the center. An array is formed at intervals. Each coil is configured as a triangular spiral coil, and each wire in each coil in the figure is configured as a right-handed spiral coil in Figure 4. A groove 34 is shown. Therefore, between each adjacent groove 34 is a coil winding, ie, a coil conductor 35.

As will be explained later, connection pieces for connecting the coils when sheet coils are provided in multiple layers are radially formed in the center of the arrangement of the coils 11 to 1. That is, coil 1
The connecting piece 36as is connected to the outer end (winding start) 46 of coil 1 and the outer end (winding end?) 49 of coil 1-
36am is formed, and these connecting pieces 36al and 36
The auxiliary connection pieces 37at and 3 are arranged in parallel with the first storage, respectively.
7am are formed radially. Furthermore, in this example, a three-phase motor is used, and since connection pieces for the second phase and third phase are configured, these connection pieces 36
as, 36a.

The connecting pieces 36b1.3 are angularly shifted by 120 degrees around the point 33 corresponding to the connecting pieces 37ax and 37a.
6b*, 37bt, 37b Maro, and this! #)1
Connecting pieces 36 ot, 36 c are shifted by 200 degrees,
37cs.

37 o Snow forms 37 radially around point 33.
bs, 36ex, 36os, 37et, and 37c are not connected to any of the coils 11 to 1-. The inner ends of each of the coils 1 to 1s are connected to connecting portions 21 to 2m, respectively, and positioning patterns 54 are formed on the outside of the coils 11 to 1a at intervals of 30 in the figure.

As shown in Figure 5, the back side of the insulating sheet) 31 has a
1! Similarly, a copper foil 32 is formed, and further coils Is to i
Coils 3 to 3 facing s through an insulating sheet 31
$ is formed respectively. When viewed from the back side, the coils 31 to 3- are uniformly #1 cloth-wrapped as the front side coils in this example! The coils 11 to 18 and the coils 31 to 3 are wound in opposite directions when viewed from the same side. The center of the arrangement of the coils 31 to 3- is a point 33. Furthermore, coils 31 to 31
The radial connecting pieces 36a1' to 36cm' e3711 to 37os' connect to the connecting pieces 36a1 to 36c through the insulating sheet 31 at the center of the Kll.
37c to 37c are similarly formed opposite to each other. However, for the coil sheet on the back side, these connection pieces are coil 31.
It is not connected to any of 3- to 3-. Close-up portions 41 to 4S are provided at the inner ends of the coils 31 to 3, respectively, and are electrically connected to the connecting portions 21 to 2 on the front side through the insulating sheet 31.

The coils 11 to 18 on the front side and the coils 31 to 3- on the back side are connected in series as a whole. Therefore, the coils 31 and 3m are mutually Kt at the adjacent parts on the outside.
iI! The coils 11 and 1- are likewise connected to each other in their adjacent outer parts, and so on in the outer parts of the adjacent coils. Connections to the coil side coils are made two at a time, and the connection positions are shifted by the coil roof distance on the front and back sides.

As a result, for example, the outer end (start of winding) 46 of the front side
The supplied current flows through the outer side of the coil h and reaches the connection part 21, and then flows outward through the coil 31 through the connection part 41 on the back side, and from the end of the coil H to the outer side of the coil 31. The current flows through the inner end 41 of the coil 3I, flows from the inner end 41 of the coil 11 toward the outside, flows from the outer end of the second coil 11 toward the inside, and flows toward the inner end of the coil 3I. The current flows from the inside to the outside of this coil 31, and in the same way, it flows through the front side coil and the opposing back side coil, flows through the adjacent coils on the same side, and sequentially flows through the coils, and finally the current flows through the coils. 1 flows from the inside to the outside and reaches the outer end of the 1 m coil, the end of the coil 49. In this way, the magnetic fluxes generated by the currents flowing through the front side coil and the back side coil are added together.

A coil sheet having a plurality of coils formed on both sides of the insulating sheet 310 shown in FIGS. 4 and 5 can be made as follows, for example. That is, as shown in FIG. 6A, a thin insulating layer H65 is formed on a conductor layer, for example, a copper foil 32. A copper foil 32 wire with a thickness of, for example, 10μ to 1m can be used, for example, a copper foil with a thickness of 80μ is used, and an insulating thin film 65
It can be coated on the copper foil 32, and is heat resistant and has excellent electrical insulation properties. For example, a paint such as polyurethane, epoxy resin, or phenol resin can be used for baking. . Insulation connection j [6
5 is formed to have a thickness of 1 μ to 20 to 30 μ, for example,
The thickness of the trench is preferably about 3 to 5 seconds, and there are no pinholes.

Formation of such an insulating thin film 65 can be carried out in the same manner as coating an insulating coating on enameled wires, formal wires, etc., and the insulating coating for these enameled wires and formal wires has a thickness of about 2 to 3 μm. Moreover, it is an excellent product with no pinholes. Similar to the insulating coating for such conductive wires, the coating of the insulating thin film 65 is made by, for example, fer)K baking by impregnating paint,
This is pasted onto the conductor layer 32, and then dried, for example, by passing it through an oven at 150° C. for about 2 to 3 seconds. The thickness of the insulating thin film 65 is determined by applying it once and then drying it.
After that, the desired thickness is achieved by repeating the application and controlling the number of applications. In this way, the conductor layer 3
Two insulating thin films 65 are formed on top of each other, and the insulating thin films are aligned and bonded together. That is, as shown in FIG. 6B, on the insulating thin film 65! 1. The adhesive 66 is preferably an adhesive with excellent heat resistance, such as a polyester resin adhesive or an epoxy adhesive, and such an adhesive is diluted with a solvent such as thinner. As with the coating of the insulating thin film 65, the insulating thin film 65 is coated by impregnating it into felt or the like and then being dried naturally or in a vacuum chamber to evaporate the solvent. In this case, the adhesive group can be dried by heating at a temperature that does not cause it to harden. Furthermore, as shown in FIG. 6, an insulating film 67 is formed on the bottom surface of the nine steel foil 32', which is formed in the same manner, and then placed on the adhesive 66, with the insulating thin film 67 side placed and bonded. By passing the overlapping state between a pair of rollers, the two can be strongly bonded. Depending on the type of adhesive 66, the adhesive 66 is cured by air drying or by heating. In this way, the insulating thin film 6
5.67, the insulating sheet 31 is formed by the adhesive 66. Copper foils 32 and 32' are formed on both sides of the insulation sheet 310.

In this embodiment, two sheet coils shown in FIGS. 4 and 5 are used for each phase of the motor. That is, as shown in FIG. 7, the sheet coils 41 and 42 shown in FIGS.
The pick coils 31 to 3 are arranged to face each other, and the surfaces of these are coated with an insulating film, or they are overlapped with an insulating sheet interposed therebetween, and in that case, at the end of the winding of the sheet coil 41. Outer end 49 of a certain coil II
is connected to the outer end 49 of the corresponding coil IS of the sheet coil 42. Therefore, coil 1 of sheet coils 41 and 42
2 to im and 3s to 3a are connected in series with each other, and the sheet coils 41 and 42 are reversed, and their current output ends are also reversed, so these are overlapped. The magnetic fluxes generated by the corresponding coils add to each other.

In this way, a laminated sheet coil 43 is constructed in which the sheets 41 and 42 are stacked and connected in series, and this is provided for each phase of the coil. That is, as shown in FIG. 8, the first phase laminated sheet coil 43a1
Phase laminated sheet coil 43b1 Third laminated sheet coil 43
c are provided, and these are arranged sequentially shifted angularly by 120 degrees with respect to the center point 33 and overlapped with each other. In this case, the coils are laminated with an insulating coating or an insulating sheet interposed therebetween to prevent the coils from coming into contact with each other.

Furthermore, as shown as a sheet coil 44 in FIG. 8, a speed detection coil and a drive coil each formed thereon are further laminated on these laminated sheet coils.

The driving coil forming surface of the sheet coil 44 is a coil IS of the laminated coil 43m on the insulating sheet 31 as shown in FIG.
Correspondingly, the coil 45& is located at a position facing the coils 14 and 18 of the no-coil 43b, respectively.
s and 45bs are formed, and furthermore, a coil 45c is formed at a position facing the coil 14 and IS of the laminated coil 430, respectively.
m, 45c* is formed.

Furthermore, connection pieces 36ax, 36mg, 37bs, 37b to 36cx, 36mm, 37ax, and 37cm are formed, respectively. In this case, unlike the connection piece for the previous laminated coiling, the connection piece 36m1.37at has a connection part 47.
1, and similarly connecting pieces 36bl and 37b
(2) The connection pieces 36el and 37ct are connected to one connection part 47C, respectively, by the connection part 47b. coil 45
The inner ends of &1, 45bl and 45'l are led out through the insulating sheet 31 to the back side, that is, the surface where the speed detection coil is formed,
As shown in FIG. 10, they are connected to each other through the wiring 48 formed on the back side, and one end 51 of the arrangement 148 is connected to the connection part 52 through the insulation sheet 31, led out to the drive coil side, and from this. common terminal, tb neutral point terminal 53
dK connected.

The first phase terminal 53a, which is provided in parallel with the terminal 53d, reaches the back side through the connection part 55 at its inner end, passes through the back side connection part 56, and comes out to the front side through the connection part 58, and connects the connection piece 37&lK. be done. This connecting piece 37 astf is connected to the outer end 46 of the coil 11 of the second layer sheet coil 42 of the first phase laminated coil 43 &. This second layer sheet 4
At the outer end 49 of the second coil 1, the connection piece 36as connects to the first layer sheet coil 41 of the first phase laminated coil 43m through the connection pieces 37ax, 47m, and 36at of the sheet coil 44.
It is connected to the outer end 46 of the coil 11 through the connecting piece 36a1.

The outer nA49 of coil II of this sheet coil 41 is connected to the connecting piece 36a of the sheet coil 44 through the connecting piece 46a*.
Connected to Maro. Therefore, the current supplied to the terminal 53 & is supplied to the coil 11 of the sheet coil 42 of the laminated coil 43 &, the current flows sequentially through each coil of the sheet coil 42, and further the current flows from the outer end of the coil 10 of the sheet coil 42. Coil 1 of sheet coil 41 through connection 47&
The current flows through each coil of the sheet coil 41 in sequence, and the current flows from the outer end 49 of the sheet coil 41 to the outer end 49 of the sheet coil 41.
The current reaches the outer end of the coil 45& of No. 4, flows through this coil toward the inner end, and from there flows to the neutral point terminal 53d.

The connection between the connection pieces of the laminated sheet is performed, for example, as shown in FIG. 11. This FIG. 11 shows the case where the connecting piece 3681 of the first layer sheet coil 41 of the first phase laminated coil 43m and the connecting piece 36 & on the sheet coil sheet 44 are connected. Each laminated coil and sheet coil are laminated with an insulating film layer 1 interposed therebetween. Laminated coil 4
The connection pieces 36ax', 36 of each laminated coil in the lamination direction correspond to the connection piece 36a1 of the sheet coil 41 of 3&.
mm'+36am, 36cs...
31.61 is very thin, and the thickness of the connecting piece is generally considered to be larger. These connecting pieces! Connecting conductor layer 6 such as solder or conductive adhesive on the laminated side surface of
2 is added. The conductor layer 62 is a thin insulating sheet 31
Alternatively, it may be glued and held between adjacent connecting pieces across 61. In this way, the connecting piece 36 of the laminated coil 43 &! is connected to the connection piece 361 of the sheet coil 44 through the conductor layer 62.

Note that the laminated coils 43 &~43C1 sheet coils 44 are laminated and bonded and solidified, and the center portion thereof is punched out, and the conductor layer 62 is formed by the punching and is formed directly on the nine side.
is attached.

In FIG. 9, the outer end of the coil 45b is connected to the inner wiring 6.
3 to the back side of the connecting portion 64, and is connected to the inner end of the coil 45b1 through the conductor 68 on the back side. The outer end of this coil 45b1 is connected through the connecting piece 47bs to the coil 1aK of the first layer sheet coil 41 of the second phase laminated coil through its connecting piece 36a1. 11th 2nd
The terminal 53b for the phase coil is provided in parallel between the terminals 53d and 53m, and this terminal 53& is connected to the connecting piece 36b1.
This in turn is connected to the connecting piece 3611 of the second sheet coil of the second phase laminated coil 43b to the coil 11. Therefore, the current from the terminal 53b is transferred to the laminated coil 43.
After the current flows through the coil of the second layer sheet coil b, the current flows through the coil of the first layer sheet coil, and then the current flows through the coil of the first layer sheet coil.
5b1, 45bm and flows to the neutral point terminal 53d.

The outer end of the coil 45C8 on the sheet coil 44 is connected to the connection part 6
9 to the back side, and is then connected to the inner end of the coil 45cs through a wiring 71. The outer end of the coil 45c1 is connected to the connecting piece 36cm, and from this the first layer sheet coil coil 1 of the 1ii three-phase laminated sheet coil 43c
Connected to the outer end of $. On the other hand, the terminal 35c provided in parallel with the terminal 53d is connected to the connecting piece 37e, which is connected to the coil 1 of the first layer sheet coil of the third phase laminated coil 43C.
Connected to 1.

In this way, the coil of the third phase laminated coil 43c and the coils 45cs and 45e are connected in series to the terminal 53c.
, 53dr151C current is caused to flow.

As shown in FIG. 10, the speed detection coil is 36 in correspondence with the connection pieces 36as, 36am, etc. of the front drive coil.
1L1', 3611', etc. are formed in the same way, and the above-mentioned arrangement @57.71 etc. are formed on the periphery thereof. The conductor portion in the radial direction effectively functions as a speed detector. Both ends of this coil 730 are led out as terminals 74 and 75, and these terminal portions 50 protrude. The length of the speed detection coil 73 in the radial direction is uniform, but the length of the drive coils 45 a , 45 bs , 45 b
Regarding the connection lead-out portion of each inner end of 45" + 45cm, a coil is formed only on the outer side of the connection wire, making it a short coil of 73m.In this way, some Corresponding to the part where the length of the coil is shortened, some of the coils are lengthened inward, for example, as shown by 73b, to balance the output vibration.The pitch of the coil 73 is the same in each part. It is said that

In each portion of the sheet coil 44, the drive coil on the front side and the speed detection coil 73 on the back side do not overlap each other with the insulating sheet 31 in between, 4! The strength of the sheet coil is weakened in the portions that intersect and do not overlap. Therefore, it is possible to reinforce this sheet coil by appropriately forming a reinforcing conductor 76 extending in the local direction so as to intersect with the speed detection coil 73 on the back side when viewed from the same side in a portion between adjacent drive coils. can. Similarly, the speed detection coil 73
Also on the side, a reinforcing coil 77 can be formed along the inner circumferential circle in the circumferential direction.

As described above, according to the laminated wiring body of this invention,
The butter 7 conductor on the insulating sheet, for example, in the example of FIG. 44 connection pieces 3611
are provided at the corresponding positions, and these are connected to the connecting piece 36 of the sheet coil 43a and the sheet coil 44.
Each insulating sheet sandwiched between the connecting conductor 36a1 and the connecting conductor 36as', 36mg', 36c1 which is not connected to the turn conductor
' etc. are formed, and these are formed up to the edges of the insulating sheet, and this insulating sheet is used as a base. When formed, adjacent conductors are connected to each other across the insulating sheet to form a continuous round groove layer 62, and the conductor layer 62 is strongly fixed to the laminate. Therefore, as described with reference to FIG. 1, there is no need to lead out the terminal for Km connection to the outside, and the overall space occupied can be small and the device can be constructed compactly.

The structure of this connection conductor is preferably formed by solidifying sheet coils as a laminate, cutting the parts to be connected in the thickness direction, and forming the conductor layer 62 on the cut surface.

In addition, in order to form the conductor layer 62 more reliably and adhere to the laminate, for example, as shown in FIG. A wedge-shaped recess 96 is formed, or an arc-shaped recess 96 is formed as shown in Figure 12B, or as shown in Figure 12C.
Wave-shaped recesses 96 are formed as shown in FIG.
It is also possible to embed the conductor layer 61 therein.

In the above description, the present invention was applied to a laminated body of sheet coils, but in general, not only a coil but also a pattern body is formed on an insulating sheet, and a conductor on the insulating sheet is applied to a laminated wiring body in which such insulating sheets are laminated. It can be applied when connecting patterns to each other.

As previously described in Figure 6, forming conductive foil on both sides of an insulating sheet and forming a patterned coil on the conductive foil by etching, etc. K is not limited to the method shown in FIG. 6. For example, as shown in FIG. 13, a double-sided adhesive tape 79 is fed out from a roller 78, and, for example, conductive foils 83 and 84 are fed out by rollers 81 and 82, respectively. The conductive foils 83 and 84 are superimposed on both sides of the double-sided adhesive tape 79 and heated to adhere them to each other. This heating can be performed using, for example, steam. The laminated body, which has been bonded and sent out as required, is cooled by a cooling means 86 and cut into a predetermined length by a cutter 87.

For example, as shown in FIG. 14, the double-sided adhesive tape 79 has adhesive layers 89 attached to both sides of an insulating film 88.
A release sheet 91 is attached to one side on the east side, and in this state it is wound around a roll 78, and when it is pulled out, the release sheet 91 is wound up on a take-up roll 92.

The insulating sheet 88 is made of a material that does not soften at the maximum temperature that the sheet coil 31 is subjected to, such as files of polyester resin, polyurethane resin, polyamide resin, polyimide resin, phenol resin, polypropylene resin, polycarbonate resin, fibers of these resins, glass, etc. It is a paper-like sheet made from fibers, etc., and has a thickness of about 5 μm, for example. The adhesive 89 is one that softens or dissolves when heated and then hardens, and is solid at room temperature or has a sufficiently high viscosity, such as polyester-modified epoxy resin, phenol resin, phenol-modified epoxy resin, silicone resin, silicone-modified epoxy resin, etc. The resin that has been cured to the B stage, that is, the thermosetting resin, has not yet reached its final cure, but has been partially cured, and each is formed to a thickness of about 5 μm.

The release sheet 91 may be a film made of polyethylene, silicone resin, polytetrafluoroethylene, or paper coated with resin. Note that instead of using such a double-sided adhesive film, an adhesive may be applied to a simple insulating film before it is rolled out and overlaid on the conductor foil. In any case, this insulating sheet 31 is 30μ
The thickness of the insulating sheet is preferably about 5 μ to 12 μ, and the thickness of the insulating sheet is thinner than the thickness of the conductor of the coil attached thereto.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a conventional laminated sheet coil, Figure 2 is a sectional view of an axial flux motor, Figure 3 is a diagram showing the relationship between the coil and magnetic poles, and Figure 4 is a drive for a small motor tile. Plan view showing one side of the coil part, 5th
The figure is a rear view, Figure 6 is a diagram showing the process for forming an insulating sheet on conductor foil, Figure 7 is an explanatory exploded view of a laminated coil, and Figure 8 is an exploded view showing an example of a sheet coil for a small motor. A perspective view, a plan view showing the drive coil side surface of the ninth expanded sheet coil 44, FIG. 10 a plan view showing the speed detection coil side surface of the sheet coil U, and FIG. 11 an embodiment of the present invention. FIG. 12 is a perspective view showing a partial modification of the laminated wiring body of the present invention, and FIG. 13 is another example of forming a K conductor foil. FIG. 14 is a sectional view showing the double-sided adhesive sheet. 11 to Is, as to 3g, 45a, 45bt, 45
bm, 45ax, 45c rich: drive coil as pattern conductor, 31: insulation sheet, 36m1 to 36c+. 36am ~ 86cm, 37at ~ 37ct
, 37a Hiroshi ~ 37cm: Connection piece as a connection conductor,
62: Conductor layer. Patent applicant Taku Kusano 76 Figure 7 Figure 18 Figure 712 Figure 6 Agent for Kangyo Denkiki Co., Ltd.

Claims (2)

[Claims] (1) The patterned conductor is formed on an insulating sheet that is thinner than its thickness, and a plurality of the insulating sheets are laminated to form a laminate, and connecting conductors reaching the edge near the edge of each of the insulating sheets correspond in sequence. A laminated wiring body in which a conductive layer is continuously formed over the edges of the connecting conductor and the insulating sheet to make necessary connections. (2) The laminated wiring body according to claim 1, wherein the stacked portion of the connecting conductors has a recess formed at the peripheral edge along the stacking direction, and the conductive layer is embedded in the recess. .