JP2013206611A - Cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable having the same connectors mounted on both terminals while using a compact connector.SOLUTION: Since an electric wire 40 of a first group 40A and an electric wire 40 of a second group 40B are twisted by 180 degrees in the same direction, respectively, the same-shaped connector substrates 23 can be used at both ends and the same connectors 21 and 22 can be used. Moreover, the electric wire 40 divided into the first group 40A and the second group 40B are respectively independently twisted. Due to this reason, as compared with a case where all cables 40 are collectively twisted, the length of moving of each electric wire 40 is shorter, and each electric wire 40 is not required to be largely widened. Accordingly, a space required for mounting work to mount the electric wire 40 on the connector 20 is reduced, and the compact connector substrate 23 and the connector 20 are mounted on a cable 11.

Description

  The present invention relates to a cable obtained by terminating a bundle of a plurality of electric wires.

  An example of a shielded cable used for wiring between electronic devices is a cable described in Patent Document 1. In this cable, connectors are attached to both ends of the electric wire. A plurality of electric wires included in the cable are connected in parallel in two upper and lower rows.

JP 2002-117937 A

  By the way, if it is going to unify the standard of the port (receptacle) of a some apparatus, the structure of the connector (plug) inserted in this receptacle will also become the same. Then, the connector shape is the same at both ends of the cable. When the same shape connector is connected to both ends of the cable, the arrangement of the electric wires included in the cable is reversed at both ends. However, when a cable having a stranded wire structure is employed, it is difficult to twist the wires while changing the arrangement order of the wires. For this reason, it is necessary to change the arrangement order of the electric wires at the end of the cable. However, the work of rearranging the wires one by one and soldering them one by one to the connector terminal or the board in the connector is complicated, and the space required for the work of rearranging the wires is increased. Further, the distance from the sheath end of the cable necessary for changing the arrangement order of the electric wires to the connector becomes longer, and if the drawn electric wires are protected by the connector or the boot, the end of the cable is enlarged.

  An object of the present invention is to provide a cable having a compact terminal that can be easily manufactured because a connector board having the same shape can be connected to both ends of the cable.

The cable of the present invention capable of solving the above problems is
At least four wires,
A connector board having the same shape provided at both ends of the electric wire,
The connector board has a front surface side connection terminal and a back surface side connection terminal,
The electric wire is divided into a first group connected to the front surface side connection terminal and a second group connected to the back surface side connection terminal,
On one end side of the cable, the first group of electric wires and the second group of electric wires are connected to the front surface side connection terminals and the back surface side connection terminals without being twisted,
At the other end of the cable, each of the first group of electric wires and the second group of electric wires is twisted 180 degrees independently of each other and connected to the front surface side connection terminal and the back surface side connection terminal. ,cable.

In the cable of the present invention,
A twisted portion of the electric wire may be fixed on the other end side of the cable.

In the cable of the present invention,
All the wires are assembled and twisted,
On the other end side of the cable, the twist direction of the first group of wires and the second group of wires may be opposite to the twist direction in which the wires are gathered and twisted.

In the cable of the present invention,
Between the connector boards at both ends, the wire is covered with a sheath,
The part where the electric wires intersect may be located between the sheath and the connector board.

  According to the cable of the present invention, each of the first group of wires and the second group of wires is twisted 180 degrees in the same direction, so that the parallel order of the wires at both ends of the cable is the same. Thereby, the connector board of the same shape can be connected to both ends of the cable. Moreover, the electric wires divided into the first group and the second group are twisted independently. For this reason, compared with the case where all the electric wires are twisted collectively, the length for twisting each electric wire and paralleling in reverse order is short. Therefore, the work for attaching the electric wire is easy, and the space required for this is reduced. Therefore, a small connector board can be attached to the cable, and a cable having a compact terminal can be provided.

It is a schematic diagram which decomposes | disassembles and shows embodiment of the cable which concerns on this invention. (A) is sectional drawing of a cable, (B) is sectional drawing of an electric wire. (A) is the front view which looked at the 1st connector from the cable side, (B) is the front view which looked at the 2nd connector from the cable side. (A) is the perspective view which looked at the connector board | substrate which connected the one end of the cable from upper direction, (B) is the perspective view which looked at the connector board | substrate which connected the other end of the cable from the upper direction. (A) is a top view which shows the twist state of the electric wire of a 1st group, (B) is a top view which shows the twist state of the electric wire of a 2nd group. (A) to (F) are manufacturing process diagrams of the cable of the present invention. (A)-(D) are the manufacturing-process diagrams of the cable of a reference example.

Hereinafter, an example of an embodiment of a cable according to the present invention will be described with reference to the drawings.
FIG. 1 is an exploded schematic view of the cable 10. As shown in FIG. 1, the cable 10 according to this embodiment can be used to connect electronic devices (not shown), for example, and the same connector 20 is connected to both ends of the cable 11 with the first connector 21 and The second connector 22 is connected. The first connector 21 is attached to one end (the left end in FIG. 1) of the cable 11, and the second connector 22 is attached to the other end (the right end in FIG. 1) of the cable 11. ing.

  In the following description, the first connector 21 and the second connector 22 are collectively referred to as “connector 20”. Further, in the first connector 21, the side on which the protrusion 21a is provided is referred to as an upper surface (upper side), and the opposite side is referred to as a lower surface (lower side).

  FIG. 2A is a cross-sectional view of the cable 11. As shown in the figure, the cable 11 includes, for example, six insulated wires 15 disposed in the center, eight coaxial wires 40 disposed in the periphery thereof, a presser winding 14 made of paper or polyester, and tin plating. A shield (braid) 13 made of an annealed copper wire braid and a sheath 12 made of polyvinyl chloride can be used. The cable 11 only needs to have at least three electric wires.

  FIG. 2B is a cross-sectional view of the coaxial cable 40. The coaxial cable 40 includes a center conductor 16, an insulator 17 that covers the center conductor 16, an external conductor 18 that is disposed outside the insulator 17, and a jacket 19 that covers the external conductor 18.

  In the following description, an example in which the cable 11 includes eight coaxial electric wires 40 will be described, and the coaxial electric wires 40 will be simply referred to as electric wires 40 for explanation. In the present embodiment, the electric wire 40 includes a first electric wire 41, a second electric wire 42, a third electric wire 43, a fourth electric wire 44, a fifth electric wire 45, a sixth electric wire 46, a seventh electric wire 47, and an eighth electric wire 48. ing. In the following description, when electric wires are generically referred to, they are indicated by “electric wires 40”.

  The eight electric wires 40 are divided into two groups of four wires, a first group 40A having a first electric wire 41, a second electric wire 42, a third electric wire 43, a fourth electric wire 44, a fifth electric wire 45, The second group 40B having the sixth electric wire 46, the seventh electric wire 47, and the eighth electric wire 48 is included.

  On one end side, the electric wires 40 of the first group 40A are bundled together on the upper side, and the electric wires 40 of the second group 40B are bundled together on the lower side. The sheath 12 covers the electric wires included in the first group 40A and the second group 40B. At one end of the cable (on the left side in FIG. 1), the electric wire coming out of the sheath 12 is viewed from one end side of the cable 10 from the left side to the right side. 43, the fourth electric wire 44 are arranged in this order, and the fifth electric wire 45, the sixth electric wire 46, the seventh electric wire 47, and the eighth electric wire 48 are arranged in this order in the lower stage.

3A is a front view of the first connector 21 viewed from the cable 11 side, and FIG. 3B is a front view of the second connector 22 viewed from the cable 11 side.
As shown in FIGS. 3A and 3B, the connector 20 has a flat connector board 23 therein. The connector substrate 23 has four front surface side connection terminals 30A on the front surface 23A and four back surface side connection terminals 30B on the back surface 23B.

  A cover 24 covers the outside of the connector substrate 23. The cover 24 has an opening 25, and the end of the connector substrate 23 is exposed from the opening 25. The cover 24 protects the connector substrate 23 and is made of metal or resin. When the resin cover 24 is used, it is preferable to first cover the substrate with a metal shell to shield the connector substrate 24 and then cover the shell with the resin cover.

  As shown in FIG. 3A, the first connector 21 is arranged such that the surface 21a is the upper surface. Accordingly, when the first connector 21 is viewed from the cable 11 side (indicated by an arrow A in FIG. 1), the first connection terminal 31 and the second connection terminal 21 are arranged in order from the right to the left on the surface 23A (upper surface) side of the connector substrate 23. A connection terminal 32, a third connection terminal 33, and a fourth connection terminal 34 are arranged. Further, on the back surface 23B (lower surface) side of the connector board 23, a fifth connection terminal 35, a sixth connection terminal 36, a seventh connection terminal 37, and an eighth connection terminal 38 are arranged in order from right to left. Yes.

  As shown in FIG. 3B, the second connector 22 is arranged so that the surface 22 a is the upper surface and the opening 25 faces the opening 25 of the second connector 22. At this time, when the second connector 22 is viewed from the cable 11 side (see arrow B in FIG. 1), the arrangement of the connection terminals 30 is exactly the same as the first connector 21 (see FIG. 3A) viewed from the cable 11 side. become. However, when the entire cable 10 is viewed from one end side, the arrangement of the connection terminals 30 of the first connector 21 and the arrangement of the connection terminals 30 of the second connector 22 are reversed from side to side.

  FIG. 4A is a perspective view of the connector substrate 23 of the first connector 21 as viewed from above the cable 11 side. As shown in FIG. 4A, in the connector substrate 23 of the first connector 21, one end side of the first electric wire 41 is connected to the first connection terminal 31. Similarly, one end side of the second electric wire 42 is connected to the second connection terminal 32, one end side of the third electric wire 43 is connected to the third connection terminal 33, and one end side of the fourth electric wire 44 is connected to the fourth connection terminal 34. The

  Also in FIG. 4A, as with the first electric wire 41 to the fourth electric wire 44, the other end sides of the fifth electric wire 45 to the eighth electric wire 48 are also changed from the fifth connection terminal 35 to the eighth connection terminal 38, respectively. It is connected. The electric wires 40 connected to the connection terminals 30 of the first connector 21 are arranged inside the cable 11 on the outer peripheral side of the cable 11 with the electric wires 40 of the first group 40A and the second group 40B maintaining a predetermined arrangement order. It is twisted in layers and arranged.

  FIG. 4B is a perspective view of the connector board 23 of the second connector 22 to which the other end of the cable 11 is connected as viewed from above the cable 11 side. FIG. 4B shows the connector board 23 of the second connector 22. The second connector 22 is the same as the first connector 21 and has a different orientation with respect to the cable 11. The second connector 22 is obtained by reversing the longitudinal direction of the cable 11 with respect to the first connector 21. For this reason, the arrangement of the connection terminals 30 on the connector board 23 is exactly the same as that of the first connector 21.

In the connector substrate 23 of the second connector 22, the other end side of the first electric wire 41 is connected to the first connection terminal 31. Similarly, the second connection terminal 32 has the other end of the second electric wire 42, the third connection terminal 33 has the other end of the third electric wire 43, and the fourth connection terminal 34 has the other end of the fourth electric wire 44. The side is connected.
Further, as shown in FIG. 4B, the other end sides of the fifth electric wire 45 to the eighth electric wire 48 are connected from the fifth connection terminal 35 to the eighth connection terminal 38, similarly to the surface side connection terminal 30A. Yes.

  When the first connector 21 and the second connector 22 are viewed from one end side of the cable 10, the first electric wire 41 is connected to the first connection terminal 31 provided on the left side of the upper stage on one end side, and the upper stage on the other end side. It connects to the 1st connection terminal 31 provided in the right side. The fourth electric wire 44 is connected to the fourth connection terminal 34 provided on the right side of the upper stage on one end side, and connected to the fourth connection terminal 34 provided on the left side of the upper stage on the other end side. Therefore, it is necessary to exchange the left and right positions of the first electric wire 41 and the fourth electric wire 44 on the other end side of the cable 10. This is the same for all the electric wires 40.

Therefore, as shown in FIG. 4B, the first group 40A is twisted 180 degrees between the second connector 22 on the other end side and the end of the sheath 12, and the left and right positions of the electric wires are switched. . Thereby, the first electric wire 41, the second electric wire 42, the third electric wire 43, and the fourth electric wire 44 arranged in order from the left side to the right side when viewing the cable 11 from the connector board 23 on one end side of the cable 10, Even at the other end, the first electric wire 41, the second electric wire 42, the third electric wire 43, and the fourth electric wire 44 are arranged in order from the left side to the right side when the cable 11 is viewed from the connector board 23. That is, on the other end side, the arrangement order of the electric wires 40 of the first group 40A and the arrangement order of the connection terminals 30 of the connector board 23 in the second connector 22 are the same.
The electric wires 40 of the second group 40B are exactly the same as the electric wires 40 of the first group 40A, and are twisted 180 degrees in the same direction and connected to the back side connection terminal 30B.

FIG. 5A is a plan view showing a twisted state of the electric wires 40 of the first group 40A, and FIG. 5B is a plan view showing a twisted state of the electric wires 40 of the second group 40B.
As shown in FIGS. 5 (A) and 5 (B), the electric wire 40 is made of resin at a portion where the first electric wire 41 intersects the fourth electric wire 44 (intersection region P1) by twisting the first group 40A by 180 degrees. 53 is fixed. The second group 40B is also twisted 180 degrees in the same direction as the first group 40A, and the intersection region P2 is fixed with resin. By fixing the intersecting regions P1 and P2, the state where the electric wires 40 of the first group 40A and the electric wires 40 of the second group 40B are twisted is maintained.

  Further, the electric wires 40 of the first group 40A are fixed by the protective tape 51 on the distal end side of the cable 11 with respect to the intersection region P1. Similarly, the electric wires 40 of the second group 40B are fixed by the protective tape 52 on the distal end side of the cable 11 from the intersection region P2. Thereby, the electric wire 40 of the 1st group 40A and the electric wire 40 of the 2nd group 40B are not separated, and the state by which the electric wire was twisted is maintained. Further, as shown in FIGS. 5A and 5B, the twisting direction of the wires 40 of the first group 40A and the twisting direction of the wires 40 of the second group 40B may be opposite to each other. FIG. 5B is a view of the connector substrate 23 as viewed from below.

  As described above, according to the cable 10 according to the embodiment described above, each of the electric wires 40 of the first group 40A and the electric wires 40 of the second group 40B is twisted 180 degrees in the same direction. 23, and connectors 21 and 22 having the same shape can be used.

Next, a method of attaching the electric wire 40 to the second connector 22 on the other end side will be described based on FIG. The first connector 21 on one end side has the electric wires 40 extending from the sheath 12 and arranged in two groups in parallel by a known method. Connected to each connection terminal 30.
On the other end side of the cable 10, first, as shown in FIG. 6A, the sheath 12 on the other end side of the cable 11 is removed by a predetermined length L1, and the electric wire 40 on the other end side is exposed. The exposed eight electric wires 40 are divided into four first groups 40A and four second groups 40B.

  Next, as shown in FIG. 6 (B), the electric wires 41, 42, 43, 44 of the first group 40A are bundled in a planar shape with the protective tape 51, and the electric wires 45, 46, 47, 48 of the second group 40B are bundled. The protective tape 52 is bundled in a flat shape.

  Next, as shown in FIG. 6C, the first group 40A is twisted 180 degrees in a predetermined direction on the sheath 12 side of the protective tapes 51 and 52. Thereby, the left-right position of the 1st electric wire 41 and the 4th electric wire 44 is switched, and the left-right position of the 2nd electric wire 42 and the 3rd electric wire 43 is switched. And the electric wire 40 is fixed with the resin 53 in the cross | intersection area | region P1. As the resin 53, an ultraviolet curable resin or the like can be used. When an ultraviolet curable resin is employed as the resin 53, an ultraviolet curable resin is applied to the portion where the electric wires 40 intersect and is cured by applying ultraviolet rays.

  Similarly, as shown in FIG. 6D, after the second group 40B is twisted 180 degrees, it is fixed with the resin 53 in the intersection region P2.

  Next, as shown in FIG. 6E, the ends of the electric wires 40 of the first group 40A and the second group 40B whose left and right are reversed are connected to the corresponding connection terminals 30 of the connector board 23 by soldering or the like. . At this time, as described above, the connector board 23 is the same as the first connector 21 on one end side.

  Finally, as shown in FIG. 6F, the caulking portion 14 is formed by caulking the electric wire 40 from above the sheath 12 in the vicinity of the end portion. Thereby, it fixes so that the edge part of the electric wire 40 may not be unraveled in the edge part of the electric wire 40. FIG.

  FIG. 7 is a diagram showing a method of twisting the entire wire 103 on the other end side and connecting it to the connector substrate 104 in order to use the same connector substrate 104 at both ends in the cable 100 for reference.

  As shown in FIG. 7A, in the cable 100, first, the braid 101 on the other end side is folded back and the sheath 102 is moved to the center side (arrow A in FIG. 7A), and the wire 103 is moved by a length L2. Expose.

  Next, as shown in FIG. 7B, the entire electric wire 103 is twisted in the intersection region P2, and the arrangement of the entire electric wire 103 is reversed horizontally. Thereby, the same connector board | substrate 104 can be used for both ends because the arrangement order of the electric wire 103 is reversed right and left at both ends.

  Next, as illustrated in FIG. 7C, the electric wire 103 is connected to the connector substrate 104. Further, since the exposed length L2 of the electric wire 103 is long, the sheath 102 and the braid 101 are returned in order to shorten the exposed length L2 (see arrow C1 in FIG. 7C) to cover the intersecting region P3.

  After that, as shown in FIG. 7D, the electric wire 103 is caulked from above the sheath 102 in the vicinity of the end portion to form the caulking portion 105.

  As shown in FIGS. 7A to 7D, in the connection method of the reference example, the entire electric wire 103 needs to be twisted, but in order to twist all the electric wires 103, a corresponding length is necessary. Moreover, even if all the electric wires 103 could be twisted, the twisting force was strong and it was difficult to fix each electric wire 103 in the twisted state. Furthermore, there is a possibility that the electric wire 103 may be disconnected when forcibly twisting.

  It is better that the exposed length L2 is short after the electric wire 103 is connected. This is because the length of the electric wire 103 accommodated in a cover, boots, or the like that covers the connector substrate 104 is shortened, so that the terminal of the cable 100 can be made small. For this reason, it is necessary to return the braid 101 or the sheath 102 (FIG. 7C) after the braid 101 is folded or the sheath 102 is moved (FIG. 7A).

  However, when the braid 101 or the sheath 102 is returned, the vicinity of the intersecting region P3 of the electric wire 103 may be covered with the sheath 102, and the caulking portion 105 may be formed in the intersecting region P3. In this case, when the cable 100 is twisted and an external force is applied to the caulking portion 105, stress concentrates on the intersecting region P3 of the electric wire 103, which causes a decrease in bending resistance.

  According to the cable 10 according to the present embodiment as compared with the cable 100 of the reference example shown in FIGS. 7A to 7D, the electric wires 40 are divided into the first group 40A and the second group 40B, respectively. Are twisted independently for each group. For this reason, compared with the case where all the electric wires 40 are twisted collectively, the moving length of each electric wire 40 is short. Furthermore, since the distance to which the electric wire 40 is twisted and moved is short, the force with which the electric wire 40 tries to return to the original shape is small, and it is easy to twist.

  The exposed length L1 of the electric wire 40 can be made shorter than the exposed length L2 of the reference example. Thereby, since it is not necessary to fold or move the braid 13 or the sheath 12, the connection work is facilitated.

  Moreover, since the exposed length L1 of the electric wire 40 is short, the boot extended from the cover 24 and the connectors 21 and 22 for covering this exposed electric wire 40 can be set short. Therefore, the cable 11 having a compact terminal portion can be provided.

  Since the braid 13 and the sheath 12 are not moved, the intersecting regions P1 and P2 can be positioned between the sheath 12 and the connector substrate 23 outside the sheath 12. Therefore, even if the caulking portion 14 is formed on the sheath 12, stress is not concentrated on the intersecting regions P1 and P2, and the cable 10 having high bending resistance can be provided. For example, in a bending test with a bending angle of ± 95 degrees, the bending resistance that was about 2000 times with the conventional cable 100 shown in FIGS. 7A to 7D is 10,000 times with the cable 10 according to the present embodiment. Improved to the extent.

  Since the electric wires 40 are grouped into the first group 40 </ b> A and the second group 40 </ b> B, they can be soldered to the connection terminals 30 of the connector substrate 23 together for each group. For this reason, the work efficiency of soldering improves and the cable 10 with high productivity can be provided.

Since the arrangement order of the electric wires 40 does not change between the one end side and the other end side, there is little possibility that the order of the electric wires 40 is mistakenly connected to the connection terminal 30.

  As mentioned above, although this invention was demonstrated using the embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications and improvements can be made to the above-described embodiment.

  For example, in the cable 10 of the above-described embodiment, the case where the connectors 20 attached to both ends of the cable 11 are the same has been described, but the present invention is not limited thereto. For example, if the connector substrate 23 is common, the connectors 24 having different shapes at both ends may be attached to both ends of the electric wire 40.

  Moreover, in the above-mentioned embodiment, although the example which employ | adopted the coaxial electric wire 40 was mentioned and demonstrated as the electric wire 40 made to cross | intersect, you may cross the insulated wire 15 which does not provide a braid. In addition, although the cable 11 has been described as an example including the coaxial electric wire 40 and the insulated electric wire 15, it is not limited thereto. You may employ | adopt the cable 11 which has only the coaxial electric wire 40, or the insulated wire 15 only.

Further, the intersecting region P1 of the first group 40A and the intersecting region P2 of the second group 40B can be integrally fixed with the resin 53. Thereby, the electric wire 40 of the first group 40A and the electric wire 40 of the second group 40B can be held at a predetermined interval. Accordingly, the front surface side connection terminals 30A and the back surface side connection terminals 30B of the connector substrate 23 can be positioned together as a group, and the work of connecting the electric wires 40 to the connector substrate 23 is facilitated.
In the above description, the example in which the electric wires 40 intersect at one point has been described. However, the electric wires 40 may be intersected so that the electric wires 40 do not intersect at one point.

  The cable may be a straight cable in which the electric wires 40 are not twisted between the first connector 21 and the second connector 22 at both ends, or a cable in which the electric wires 40 are collectively twisted in one direction. May be adopted. In either case, the cable 10 can be produced using the same connector board by twisting the wires divided into two groups at either one end by 180 degrees for each group.

  In addition, when twisting the core wire of the cable, the direction in which the electric wires 40 are gathered and twisted between the connectors 20 at both ends, and the direction in which the other ends are twisted for each group 40A, 40B Are preferably in the opposite direction. For example, if the collective twist direction is clockwise, the twist direction of each group 40A, 40B is counterclockwise. When twisting each group 40A, 40B at the other end, when twisting in the opposite direction to the twisting direction, it can be twisted while returning the twist. Is weak, easy to twist, and the terminal after twisting is stable. In addition, each wire is not subjected to excessive force due to twisting and has good bending resistance.

11: Cable, 12: Sheath, 13: Braid 13: Caulking part, 20: Connector, 21: First connector, 21a: Protrusion, 22: Second connector, 22a: Protrusion, 23: Connector board, 23A: Surface, 23B : Back side, 24: Cover, 25: Opening, 30: Connection terminal, 30A: Front side connection terminal, 30B: Back side connection terminal, 31: First connection terminal, 32: Second connection terminal, 33: Third connection Terminal: 34: fourth connection terminal, 35: fifth connection terminal, 36: sixth connection terminal, 37: seventh connection terminal, 38: eighth connection terminal, 40: electric wire, 40A: first group, 40B: first Two groups, 41: first electric wire, 42: second electric wire, 43: third electric wire, 44: fourth electric wire, 45: fifth electric wire, 46: sixth electric wire, 47: seventh electric wire, 48: eighth electric wire , 51: protective tape, 52: protective tape, 53: resin

Claims (4)

At least four wires,
A connector board having the same shape provided at both ends of the electric wire,
The connector board has a front surface side connection terminal and a back surface side connection terminal,
The electric wire is divided into a first group connected to the front surface side connection terminal and a second group connected to the back surface side connection terminal,
On one end side of the cable, the first group of electric wires and the second group of electric wires are connected to the front surface side connection terminals and the back surface side connection terminals without being twisted,
At the other end of the cable, each of the first group of electric wires and the second group of electric wires is twisted 180 degrees independently of each other and connected to the front surface side connection terminal and the back surface side connection terminal. ,cable.   The cable according to claim 1, wherein a twisted portion of the electric wire is fixed on the other end side of the cable. All the wires are assembled and twisted,
3. The twist direction of the first group of wires and the second group of wires is opposite to the twist direction twisted when the wires are gathered at the other end of the cable. The cable according to any one of the above. Between the connector boards at both ends, the wire is covered with a sheath,
The cable according to any one of claims 1 to 3, wherein the crossing portion of the electric wires is located between the sheath and the connector substrate.

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