JP4016608B2 - Circuit body and junction box for automobile having the circuit body - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a circuit body and a junction box for an automobile equipped with the circuit body, and in particular, in the case where a wire group is cross-wired in the XY direction and connected at a required crossing position to constitute a branch circuit, This is to improve the position connection structure.
[0002]
[Prior art]
Conventionally, a circuit housed in a junction box mounted on an automobile has a bus bar in which a conductive metal plate is punched into a circuit shape with a die on a substrate made of insulating resin, and is arranged in layers. There are many cases.
[0003]
[Problems to be solved by the invention]
When the circuit body is formed by fixing the bus bar on the insulating plate, the cost of mold production for forming the bus bar becomes expensive, and there is a problem that the circuit cannot be changed easily.
Moreover, when a metal plate is punched into a circuit shape, parts other than the circuit part must be discarded, which increases waste and increases the cost accordingly.
Furthermore, in order to fix the bus bar to the insulating plate, a rib is projected from the insulating substrate, and after inserting the rib into the hole drilled in the bus bar, the rib is crimped and fixed. There is a problem that it takes time to fix the bus bar.
[0004]
Instead of the bus bar, an inexpensive electric wire is wired on an insulating plate, a press contact terminal is press-connected to the electric wire, and different pressure contact terminals are connected to each other via a relay terminal, thereby connecting a plurality of circuit bodies. There have been proposed a method of laminating and a method of directly welding wires that have been cross-wired on both sides of an insulating plate through an opening provided in the insulating plate.
[0005]
However, when the press contact terminal is press-connected to the electric wire, a separate press contact terminal or a relay terminal is required, and an operation for press-connecting the press contact terminal to the electric wire is also required.
Moreover, in the method of directly welding the core wires of the cross-wired wires, the insulation coating of the wires at the crossing positions to be connected is peeled in advance to expose the core wires, and then resistance welding, laser welding, or mechanical welding The core wires are directly welded with each other. In this case, the contact area of the core wire to which the electric wire is welded is small, there is a portion where the contact portion is not welded due to a gap, and since the welding strength is weak, it is easy to come off due to external interference, resulting in poor electrical connection reliability. There's a problem.
[0006]
The present invention has been made in view of the above-described problems, and in particular, in a circuit body formed by cross wiring of electric wires, the welding connection structure at the crossing position of the electric wires is improved, and the electric connection area is expanded. It is an object of the present invention to provide a circuit body with high electrical connection reliability and a junction box for automobiles equipped with the circuit body.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention firstly forms a branch circuit by cross-wiring the first electric wire group and the second electric wire group in the XY direction and connecting them at a required crossing position. In the circuit body, at least one of the electric wires of the first electric wire group and the second electric wire group is a covered electric wire, and a metal fiber is mixed in the intersecting position where the first electric wire group and the second electric wire group are connected . Covered with a pair of conductive resin chips made of a conductive resin composition or a conductive resin composition in which a low-melting-point alloy is dispersed, and on the outer surface sandwiching the crossing position of the conductive resin chips is the tip head of the welding machine A recess for insertion is provided, and the conductive resin chips are welded to each other at a connection crossing position covered with the conductive resin chip, and at the time of the welding, the coated electric wire melts at least a part of its insulating coating. The first wire group and the second A circuit body, wherein the core wires of the wires of the wire group are in contact with the conductive resin chip, and the first wire group and the second wire group are electrically connected via the conductive resin chip. providing.
[0008]
The core wires of the electric wires of the first electric wire group and the second electric wire group are in contact with the conductive resin at the required intersection position, and the core wires are also in contact with each other.
[0009]
The wires of the first and second wire groups are respectively covered with the conductive resin chips at the required crossing positions, and the conductive resin chips are welded together, and at the same time, the insulation coating of the covered wires is removed by the welding operation. The core wires are in direct contact with each other.
[0010]
In the circuit body configured as described above, the core wire of each electric wire is in contact with the conductive resin at the required intersection position, and the conductive resin chips that are electrically connected to the core wire are welded to each other. In this way, electrical connection between the first electric wire group and the second electric wire group can be obtained via the conductive resin chip, and the contact area increases as compared with the contact between the core wires, and stable conduction is achieved. Connection reliability can be improved.
In addition, since the conductive resin chips are welded and integrated at a required intersection position of the group of wires to be connected, the strength of the electrical connection portion is increased, and separation of the joint portion due to external interference can be prevented.
[0011]
Further, the insulation coating of the covered electric wires is removed at the time of welding the conductive resin chips, the core wires of the electric wires of the first electric wire group and the second electric wire group are also in contact with each other, and conduction between the conductive resin chips and the connection between the core wires are made. Conduction by contact is made, and the contact area can be increased. Therefore, even if the contact between the core wires is insufficient, since the core wire and the conductive resin chip are in contact with each other and electrically connected, the conduction can be stably secured by welding the conductive resin chips.
As described above, the conductive resin chips are welded to each other so that the core wires of the intersecting electric wires can be electrically connected to each other, and the insulation coating peeling operation at the connection position, which has been conventionally required, can be made unnecessary.
Needless to say, the insulating coating may be peeled off in advance, and the core wire may be exposed at the position where the conductive resin chip is covered.
[0012]
The pair of conductive resin chips to be overlapped at the crossing positions are each cylindrical, and the electric wires are embedded in the diameter direction in the electric wire through grooves recessed in one end surface of the welding side surface, while the other end surface is provided on the other end surface. It is preferable that a recess for inserting the tip head of the welding machine is provided, and the pair of conductive resin chips are welded by an ultrasonic welding machine with the welding side surfaces joined so that the embedded core wires are orthogonally overlapped. When welding with an ultrasonic welder, the insulation coating can be reliably removed by ultrasonic vibration and heating, and the core wire and the conductive resin chip can be brought into contact with each other.
[0013]
The cylindrical shape of the conductive resin chip is necessary and sufficient to cover the crossing points of the wire group, while reducing waste of material costs and handling by workers compared to semicircular shapes. Is also easier. Further, by providing the recess for inserting the tip head of the welding machine, the tip head can be stabilized and workability can be improved.
[0014]
In addition, the present invention secondly, in the circuit body in which the first electric wire group and the second electric wire group are cross-wired in the XY direction and connected at a required intersection position to form a branch circuit,
At least one of the electric wires of the first electric wire group and the second electric wire group is a covered electric wire, and a conductive resin composition in which metal fibers are mixed at the crossing position where the first electric wire group and the second electric wire group are connected to each other . Alternatively , each of the conductive resins made from a conductive resin composition in which a low-melting-point alloy is dispersed is insert-molded and covered, and a recess for inserting a tip head of a welding machine is formed on the outer surface sandwiching the intersection position of the conductive resin. Provided,
At the connection crossing position covered with the conductive resin, at least a part of the insulation coating is melted and removed, and the core wires of the first electric wire group and the second electric wire group are respectively connected to the conductive wires. A circuit body is provided in which the first electric wire group and the second electric wire group are electrically connected via the conductive resin through the conductive resin.
Thus, when the electric wire is insert-molded with the conductive resin and integrated in advance, the connection strength between the electric wire and the conductive resin can be increased.
[0015]
The above-described circuit body is accommodated as an internal circuit of the junction box, and the X-direction and / or Y-direction electric wires are extended to the outside of the case, and the other wires are attached to the ends extending outward. It is preferable that the connector connected to the connector of the harness terminal or / and the connector of the device is connected.
With this configuration, a part of the circuit body in the junction box is constituted by a part of the wire group of the wire harness, and these wire groups are extended to the outside of the junction box without a connector. It is no longer necessary to provide a connector housing in the case and connect the connector to the wire harness, simplifying the junction box configuration and changing the circuit configuration without changing the case, even if the circuit configuration changes. It can be easily handled.
In addition, by using the above circuit body instead of the conventional circuit body using a costly bus bar, the manufacturing cost of the junction box can be reduced without lowering the electrical connection reliability.
[0016]
In the junction box, the connector connection circuit, the fuse connection circuit, and the relay connection circuit are divided and provided separately as a connector module, a fuse module, and a relay module, and the circuits of the module are connected to each other. The circuit body may be used.
By dividing the module into modules as described above, if there is a specification change in each circuit, it is only necessary to change the specification of only the corresponding module, and the circuit change can be easily handled.
[0017]
As disclosed in JP-A-10-237331 and JP-A-11-342522, the highly conductive resin used as the material for the conductive resin chip is made of copper, nickel, iron, or the like in a thermoplastic resin. It consists of a conductive resin composition in which metal fibers are mixed and lead-free solder (low melting point solder) and a low melting point alloy such as Cu powder are dispersed.
Examples of the thermoplastic resin blended with conductive metal fibers include propylene, polyethylene, polystyrene, acrylonitrile / butadiene / styrene resin, modified polyphenylene oxide resin, polybutylene terephthalate resin, polyethylene terephthalate resin, polyamide resin, aromatic polyamide resin, Resins such as polyphenylene sulfide resin, liquid crystal polymer, polyetherimide, polybenzimidazole, polyetheretherketone, polyethersulfone can be used alone or in a blend, especially acrylonitrile / butadiene / styrene resin, polybutylene. A terephthalate resin is preferably used.
[0018]
The low melting point alloy to be mixed and dispersed in the thermoplastic resin and joined in a network form is an alloy having a melting point of 100 ° C. or higher, preferably 200 ° C. or higher and melted in an injection molded product, Sn—Pb series, Sn-Ag-Pb series, Sn-Bi series, Sn-Bi-In series, Bi-Pb series, Bi-Sn series, Sn-Cu series, Sn-Cu-Ni-P series, Sn-Ag series, Sn-- Bi-Pb-based and Sn-In-based materials can be used.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a circuit body 10 according to the first embodiment, and a first wire group W1 in the X direction and a second wire group W2 in the Y direction are cross-wired on a substrate 15 made of insulating resin. The electric wires 11 and 12 of the first electric wire group W1 and the second electric wire group W2 are electrically connected via the conductive resin chips 13 and 14 at the crossing position to form a branch circuit.
[0020]
The pair of conductive resin chips 13 and 14 are made of the above-described highly conductive resin, and as shown in FIGS. 2A and 2B, both are cylindrical and have one end surface welded side surface 13a, 14a, and the other end surfaces are front end head insertion surfaces 13b and 14b for the welding machine 16, and the front end head insertion surfaces 13b and 14b are provided with front end head insertion recesses 13c and 14c. Further, as shown in FIG. 2C, the welding side surfaces 13a and 14a of the conductive resin chips 13 and 14 are provided with wire insertion grooves 13d and 14d having a U-shaped cross section in the diameter direction, and are used after being rotated by 90 degrees. Thus, the wire insertion groove 13d is arranged in the X direction, and the wire insertion groove 14d is arranged in the Y direction.
[0021]
The wires 11 and 12 are both covered by insulation coating, and the insulation coatings 11b and 12b of the wires 11 and 12 are not peeled off as shown in FIG. The conductive resin chips 13 and 14 are inserted so as to be pushed into the wire insertion grooves 13d and 14d.
[0022]
In this state, the welding side surfaces 13a and 14a in which the electric wires 11 and 12 are embedded are opposed to each other, and the electric wires 11 and 12 are brought into contact with each other in an orthogonal state with the electric wire 11 in the X direction and the electric wire 12 in the Y direction. The welded side surfaces 13a and 14a of the conductive resin chips 13 and 14 on the outer circumferences of the electric wires 11 and 12 are in contact with each other in a plane portion excluding the electric wire insertion grooves 13d and 14d.
[0023]
In this state, the horn 16a of the tip head of the ultrasonic welding machine 16 is inserted into the recess 14c and the anvil 16b is inserted into the recess 13c in the tip head insertion recesses 13c and 14c, and energized, and the side surfaces of the conductive resin chips 13 and 14 are welded. Weld the flat surfaces simultaneously. At the time of welding, at least the insulation coatings 11b and 12b of the electric wires 11 and 12 on the side of the recesses 13c and 14c are removed by melting, the core wire 11a is the conductive resin chip 13, and the core wire 12a is the conductive resin chip 14. Contact with.
[0024]
As described above, the core wire 11a of the electric wire 11 and the conductive resin chip 13, and the electric wire 12a and the conductive resin chip 14 are in contact with each other, while the welding side surfaces 13a and 14a of the conductive resin chips 13 and 14 are welded. As a result, the covered wires 11 and 12 are electrically connected to the core wire 11a → the conductive resin chip 13 → the conductive resin chip 14 → the core wire 12a to be electrically connected.
[0025]
When the insulation coatings 11b and 12b of the electric wires 11 and 12 are removed all around, the exposed core wires 11a and 12a are also in contact with each other, in addition to the direct electrical connection between the core wires 11a and 12a, Wire connection is made through the path of the core wire 11a → the conductive resin chip 13 → the conductive resin chip 14 → the core wire 12a, and the electric contact area can be increased.
Further, when the core wires 11a and 12a are not connected, or even if the connection is poor, the core wire 11a and the conductive resin chip 13, and the core wire 12a and the conductive resin chip 14 are in contact with each other. Electrical connection can be ensured through contact between chips, and electrical connection reliability can be improved.
[0026]
Further, by covering the periphery of the intersecting position P of the electric wires 11 and 12 with the conductive resin chips 13 and 14, not only the welded portion is not exposed to the outside, but also the function of reinforcing the welded portion is performed. It is possible to prevent the occurrence of connection defects such as separation, and to provide a circuit body 10 with high connection reliability.
[0027]
FIG. 4 shows a second embodiment of the present invention. The difference from the first embodiment is that the conductive resin chips 13 and 14 are not formed separately from the electric wires 11 and 12 in advance, 12 'is insert-molded with a conductive resin, and a covered wire is used as the electric wire 11, while a single core wire that is not covered with insulation is used as the second electric wire 12'. The other points are the same as those in the first embodiment, so the same reference numerals are given and the description thereof is omitted.
[0028]
Specifically, first, as shown in FIGS. 4A and 4B, a cylindrical cavity 21 is formed in the mold 20 with an upper opening, and a small-diameter convex portion 22 is projected upward on the bottom surface of the cavity 21. In addition, a wire insertion groove 23 is formed on the upper surface of the mold 20 so as to cross the upper surface of the cavity 21 in the diameter direction. Next, the electric wires 11 and 12 ′ are inserted into the electric wire insertion groove 23 at the required intersection position P in advance. Next, as shown in FIG. 4B, a conductive resin 24 is injected into the cavity 21 and cured. As a result, as shown in FIGS. 4C and 4D, the wires 11 and 12 ′ at the required intersection position P are insert-molded on the welding side surfaces 13a ′ and 14a ′, respectively, and the tip head insertion surface 13b ′ and The conductive resin chips 13 ′ and 14 ′ provided with the tip head insertion concave portions 13c ′ and 14c ′ by the small-diameter convex portion 22 are completed at 14b ′.
[0029]
As shown in FIG. 1, the electric wires 11 and 12 ′ integrated with the conductive resin chips 13 ′ and 14 ′ as described above are cross-wired in the XY direction and connected at the required intersection position P where the conductive resin is connected. The welding side surfaces 13a 'and 14a' of the chips 13 'and 14' are made to face each other. In this state, similarly to the first embodiment, the welding side surfaces 13a ′ and 14a ′ are welded by an ultrasonic welder, the insulation coating of the covered electric wire 11 is melted and removed, and the core wire and the conductive resin chip 13 ′. At the same time, the conductive resin chips 13 ′ and 14 ′ are welded together.
[0030]
FIG. 5 shows a circuit body according to the third embodiment. In the third embodiment, the covered electric wires 11 of the first electric wire group and the covered electric wires 12 of the second electric wire group are previously cross-wired, and the required crossing position is made conductive. A cylindrical conductive resin chip 28 is provided which is molded with resin and covers the intersection of the covered electric wires 11 and 12.
After forming the conductive resin chip 28 in this way, the insulation coating of the buried covered wires 11 and 12 is removed by applying ultrasonic vibration from above and below by the horn 16a and the anvil 16b of the ultrasonic welder. Thus, the core wires 11a and 12a are exposed and brought into contact with the conductive resin 28.
[0031]
6 to 8 show an automobile junction box 100 including the circuit body 10 described above. The junction box 100 accommodates a connector module 30 housing a connector connection circuit section, a fuse module 40 housing a fuse connection circuit section, and a relay module 50 housing a relay connection circuit section inside the lower case 101 and the upper case 102. is doing.
The relay module 50 is disposed above one side of the connector module 30, and the fuse module 40 is disposed on one side of the connector module 30 to cover the upper case 102. The relay 51 is exposed in an opening 102 b provided on one side of the upper surface of the upper case 102, and the fuse 41 is exposed in a side opening between the lower case 101 and the upper case 102.
[0032]
The connector module 30 uses an intermediate portion of a long wire harness 35 in which connectors 32A and 32B are connected to both ends of a plurality of covered electric wires 11 that are wired in parallel as a conductor of the connector module 30.
That is, the covered electric wire 11 of the wire harness 35 is divided into an internal circuit portion 11-1 serving as a conductor of the connector module 30 and an external harness portion 11-2 extending so as to hang from both sides of the connector module 30. A portion 11-1 that becomes a circuit is a circuit body 10 'shown in the first embodiment.
[0033]
In the present embodiment, two sets of wire harnesses 35A and 35B are used, and the electric wires 12 'of these wire harnesses are wired in parallel in the X direction on the upper surface of the board 15' of the connector module 30. It spans over the upper surface of 'so as to come in the Y direction. Conductive resin chips 13 and 14 are attached to the covered electric wire 11 and the single core wire 12 ′ at the required intersection positions in the same manner as in the first embodiment, and the core wires of the electric wires 11 ′ and 12 ′ and the conductive resin tip are connected by resistance welding. 13 and 14 are welded and electrically connected.
[0034]
The external harness portion of the wire harness 35 hanging from both ends of the connector module 30 is drawn to the outside through a harness insertion opening 102c formed by cutting out at the lower end of the peripheral wall of the upper case 102 of the junction box 100.
[0035]
As shown in FIG. 8A, the fuse module 40 is provided on one side of the connector module 30 with pressure contact slots 45a and 45b at both ends of a bus bar 45 fixed to a substrate 44 (shown in FIG. 6). The press contact slot 45 a is press-connected to the electric wire 12 ′ of the connector module 30, while the other end press-connect slot 45 b is press-connected to the terminal 41 a of the fuse 41.
As shown in FIG. 8B, the relay module 50 is also provided with a press contact slot 53a at one end of the bus bar 53 fixed to the substrate 52 so as to press contact with the electric wire 12 ′ of the connector module 30, and the relay 51 is connected to the bus bar 53. The terminals are soldered.
[0036]
In the junction box 100 having the above-described configuration, the wire harness that has been conventionally connected to the junction box is directly passed through the junction box 100 and used as the conductor of the connector module 30. Therefore, the wire harness is used as the connector module. There is no need to connect the connector with 30 conductors.
The external harness portions on both sides of the wire harness 35 extending so as to hang from the side wall of the junction box 100 are conventionally formed as separate wire harnesses, and it is necessary to provide two wire harnesses. Connectors are connected to both ends of these two wire harnesses, and one of the connectors is connected to the junction box 100. Therefore, when the configuration of the above embodiment of the present invention is used, the wire harness is compared with the conventional one. The connector connection can be halved, and there is no need to provide a connector connection portion on the junction box side, so that the number of assembling steps can be greatly reduced and the number of parts can be reduced.
And since it is not necessary to provide a connector accommodating part in the case of the junction box 100, it is only necessary to provide the opening which penetrates the electric wire group of the wire harness 35, a shape becomes simple and a case can be changed even if a circuit structure changes. There is no need to change.
[0037]
In the automobile assembly line, the connectors 32A and 32B of the external harness terminal of the wire harness 35 extending from the junction box 100 are fitted and connected to the connector of the device or the terminal connector of another wire harness.
[0038]
As described above, the automobile junction box 100 in which the circuit body 10 is accommodated as an internal circuit is lower in cost than a conventional junction box using a bus bar and can easily cope with a circuit change. It is possible to ensure high connection reliability equal to In addition, since the circuit is divided and modularized as the connector module 30, the fuse module 40, and the relay module 50, it is sufficient to change only the corresponding module in which the change has occurred when changing the design.
[0039]
【The invention's effect】
As is clear from the above description, according to the present invention, since the required crossing position of the cross-wired wires is covered with the conductive resin, the electrical connection reliability can be improved. Moreover, since a covered electric wire can be used as an electric wire, the work of stripping the insulation coating becomes unnecessary and workability can be improved.
[0040]
In addition, since the connection location between the core wires is covered with a conductive resin and the connection strength is reinforced, even if a load is applied in the direction in which the connection wires separate from each other due to external interference or the like, the occurrence of contact failure can be prevented. Even after this, high connection reliability can be maintained.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a circuit body according to a first embodiment of the present invention.
2 shows the conductive resin chip shown in FIG. 1, (A) is a perspective view seen from the upper surface side, (B) is a side view, and (C) is a perspective view seen from the lower surface side.
3A, 3B, and 3C are process diagrams showing a connection method at a required intersection position shown in FIG.
FIG. 4A shows a molding die for a conductive resin chip of a circuit body according to a second embodiment of the present invention, FIG. 4B is a sectional view at the time of molding, and FIG. 4C and FIG. It is sectional drawing of the shape | molded state.
FIG. 5 is a drawing showing a third embodiment.
FIG. 6 is an exploded perspective view showing an automobile junction box including a circuit body according to a second embodiment.
7 is a drawing showing a circuit body of the connector module of FIG. 6. FIG.
8A is a drawing showing a circuit connection configuration of a fuse module, and FIG. 8B is a drawing showing a circuit connection configuration of a relay module.
[Explanation of symbols]
W1 1st electric wire group W2 2nd electric wire group 10 Circuit body 11 (1st) Electric wire 11a Core wire 12 (2nd) Electric wire 12a Core wires 13 and 14 Conductive resin chip 100 Junction box for motor vehicles

Claims (6)

In the circuit body in which the first electric wire group and the second electric wire group are cross-wired in the XY direction and connected at a required intersection position to form a branch circuit,
At least one of the electric wires of the first electric wire group and the second electric wire group is a covered electric wire, and a conductive resin composition in which metal fibers are mixed at the crossing position where the first electric wire group and the second electric wire group are connected to each other . Or a pair of conductive resin chips made of a conductive resin composition in which a low melting point alloy is dispersed is covered, and a recess for inserting a tip head of a welding machine is provided on the outer surface sandwiching the intersection position of the conductive resin chips. And
At the connection crossing position covered with the conductive resin chip, the conductive resin chips are welded together, and at the time of the welding, at least a part of the insulating coating is melted and removed, and the first electric wire is removed. The core wires of the wires of the group and the second wire group are in contact with the conductive resin chip, respectively, and the first wire group and the second wire group are electrically connected via the conductive resin chip. Circuit body to do. In the circuit body in which the first electric wire group and the second electric wire group are cross-wired in the XY direction and connected at a required intersection position to form a branch circuit,
At least one of the electric wires of the first electric wire group and the second electric wire group is a covered electric wire, and a resin composition or a low melting point in which metal fibers are mixed at the intersecting position where the first electric wire group and the second electric wire group are connected to each other. each cover by insert molding the conductive resin composition obtained by dispersing an alloy with conductive resin as a material, the outer surface sandwiching the intersecting position of the conductive resin is provided leading head insertion recess of the welder ,
At the connection crossing position covered with the conductive resin, at least a part of the insulation coating is melted and removed, and the core wires of the first electric wire group and the second electric wire group are respectively connected to the conductive wires. A circuit body, wherein the first electric wire group and the second electric wire group are in electrical contact with each other through the conductive resin.   The pair of conductive resin chips to be overlapped at the crossing positions are each cylindrical, and the electric wires are embedded in the diameter direction in the electric wire through grooves recessed in one end surface of the welding side surface, while the other end surface is The circuit body according to claim 1, wherein a recess for inserting a tip head of the welding machine is provided.   The circuit body according to any one of claims 1 to 3, wherein the core wires are also in contact with each other at the required intersection position.   The circuit body according to any one of claims 1 to 4 is accommodated as an internal circuit, and the electric wires in the X direction and / or the Y direction are extended to the outside of the case. The junction box for motor vehicles provided with the circuit body characterized by the connector connected with the connector of another wire harness terminal or / and the connector of an apparatus being connected to the extended front-end | tip. Dividing the connector connection circuit, fuse connection circuit, and relay connection circuit provided in the junction box, separately providing them as a connector module, fuse module, and relay module, and connecting these module circuits,
The junction box for automobiles according to claim 5, wherein the circuit body is used for a circuit of the connector module.

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