Cable connection structure

Abstract

To provide a cable connection structure that is compact and simultaneously suppresses the effects of external noise, etc, in particular, suppress the effect of external noise, etc. on signal transmission when ultra-fine wires are used as signal lines to miniaturize (thinnify) transmission cables.SOLUTION: The transmission paths of first and second cables are electrically connected via a relay member, and the shielding layers of the first and second cables are electrically connected via a conductive member, with the relay member being covered with the conductive member to form a connection structure.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a cable connection structure, and more particularly to a connection for a data transmission cable. [Background technology]

[0002] Recent advances in camera technology have made it possible to transmit high-resolution and high-frame-rate data. When communicating high-resolution and high-frame-rate images, there are situations in which a large amount of signals must be transmitted over a transmission cable, and in order to reduce signal loss, it is desirable to use a large diameter conductor for the signal lines that make up the transmission cable.

[0003] On the other hand, there are situations where transmission cables must be routed in narrow spaces, such as the narrow arm parts of articulated robots and narrow parts of endoscopes, and there is a demand for thinner transmission cables.

[0004] When making a transmission cable thinner, the diameter of the conductor of the signal wire that composes it is reduced, but a thin conductor has a high resistance value, which results in a large loss of the transmitted signal. In a transmission cable with a large signal loss, the signal loss becomes noticeable when the cable length is increased, so there is a limit to the cable length.

[0005] In order to address this issue, attempts have been made to solve both issues by connecting a large-diameter transmission cable, which is excellent at signal transmission, with a small-diameter transmission cable that can be wired in narrow spaces, and various connection devices have been proposed.

[0006] For example, Patent Document 1 describes a connection structure for a communication cable used in a narrow space.

[0007] Moreover, in Patent Document 2, the signal wire of the relay cable has a larger diameter than the signal wire of the signal cable, thereby minimizing transmission loss.

[0008] On the other hand, the invention described in Patent Document 1 assumes that electromagnetic noise will be removed by electronic components mounted on the flat surface of the board. Therefore, when considering the removal of electromagnetic noise, there remains a problem in miniaturizing the board, and if there is not enough space to mount the electronic components, it is difficult to avoid the effects of electromagnetic noise.

[0009] The invention described in Patent Document 2 assumes the use of multiple relay boards that electrically connect the signal cables and relay cables, so there remains a problem in miniaturizing the connection points.

[0010] Furthermore, when ultra-fine wires are used as signal lines in order to make transmission cables smaller (thinner in diameter), the effects of external noise at the connection points become greater, which can affect signal transmission. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] JP 2022-166847 A [Patent Document 2] Patent No. 4652518 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0012] An object of the present invention is to provide a connection structure that can suppress the influence of external noise and the like at a cable connection portion and achieves miniaturization. [Means for solving the problem]

[0013] As a result of extensive investigation into cable connection structures, the inventors discovered that the above-mentioned problems can be solved by electrically connecting the shielding layers of the cables to be connected via a conductive member and also using the conductive member to block external noise. Effect of the Invention

[0014] The connection structure of the present invention suppresses the effects of external noise and the like at the cable connection portion, resulting in excellent signal transmission capabilities, and also allows for miniaturization, making it suitable for use in tight spaces. [Brief description of the drawings]

[0015] [Figure 1] 1 is a schematic diagram of a connection structure of the present invention; [Diagram 2] 4 is a diagram showing an example of a fixing mechanism for a shield layer according to the present invention. [Diagram 3] This is an example in which a tension member fixing portion is provided on a conductive member. [Figure 4] The relay member has a divided structure consisting of a first relay member and a second relay member. [Diagram 5] This is an example of an embodiment of the present invention. [Figure 6] 1 is another example of an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] The connection structure of the present invention will be described in more detail below with reference to examples, but the scope of the present invention is not limited to these.

[0017] [Description of the embodiment of the present invention] First, the contents of the embodiment of the present invention will be listed and described. The embodiment of the connection structure of the present invention has the following configuration.

[0018] [1] A first cable having a first transmission line and a first shielding layer; A connection structure for electrically connecting a second transmission line and a second cable having a second shielding layer, The first transmission line and the second transmission line are electrically connected via a relay member, A connection structure, wherein the first shield layer and the second shield layer are connected via a conductive member.

[0019] [2] The connection structure according to the above [1], wherein the relay member is housed inside the conductive member.

[0020] [3] The connection structure according to [1] or [2] above, wherein the conductive member also serves as a protective housing for accommodating the relay member.

[0021] [4] The connection structure according to any one of the above [1] to [3], wherein at least one of the first cable and the second cable has a tensile member, and the conductive member is provided with a tensile member fixing portion to which the tensile member is fixed.

[0022] [5] The connection structure according to any one of the above [1] to [4], wherein the conductive member is provided with a fixing mechanism for crimping and fixing at least one of the first shielding layer and the second shielding layer.

[0023] [6] The relay member includes a first relay member electrically connected to one end of the first cable and a second relay member electrically connected to one end of the second cable, The connection structure according to any one of the above [1] to [5], characterized in that the first relay member and the second relay member are electrically connected to each other, thereby electrically connecting the first transmission path and the second transmission path.

[0024] [7] The connection structure according to any one of the above [1] to [6], wherein the first cable and the second cable have different outer diameters.

[0025] Additionally, configurations in which the configurations described in [1] to [7] above are appropriately selected and combined also fall within the technical scope of the present disclosure.

[0026] Hereinafter, the connection structure of the present invention will be described with reference to the drawings.

[0027] FIG. 1 shows a connection structure 1 of the present invention, in which FIG. 1(a) is a cross-sectional view seen from above, and FIG. 1(b) is a cross-sectional view seen from the side.

[0028] The connection structure 1 of the present invention is for electrically connecting a first cable 110 having a first shielding layer 111 covering a first transmission line 112 and a second cable 210 having a second shielding layer 211 covering a second transmission line 212, and is characterized in that the first transmission line 112 and the second transmission line 212 are electrically connected via a relay member 30, and the first shielding layer 111 and the second shielding layer 211 are electrically connected via a conductive member 40.

[0029] The first cable 110 is a so-called shielded cable in which a first transmission line 112 made of an insulated wire or a coaxial cable functioning as a signal line is covered with a first shield layer 111.

[0030] The number of first transmission lines 112 constituting first cable 110 may be one or more, and in the case of more than one, it can be appropriately selected from insulated wires only, coaxial cables only, or a combination of insulated wires and coaxial cables. Other specific configurations of first cable 110 can be appropriately selected from various cable structures according to the desired transmission standard, transmission characteristics, connected devices, etc.

[0031] When first cable 110 is configured using a plurality of first transmission lines 112, all first transmission lines 112 are covered collectively with first shield layer 111 as a rule.

[0032] As long as second cable 210 has second shield layer 211 like first cable 110, the number and type of second transmission lines 212 are not particularly limited, and the specific configuration can be appropriately selected and used.

[0033] Since the present invention is intended to electrically connect first cable 110 and second cable 210, the main specifications of first cable 110 and second cable 210 will basically be the same, but the specifications of first cable 110 and second cable 210 may be different if necessary.

[0034] Since the present invention is also intended to be used for connecting a thin-diameter transmission cable and a thick-diameter transmission cable, the outer diameter of first cable 110 and the outer diameter of second cable 210 may be different.

[0035] The present invention connects one end of first cable 110 and one end of second cable 210, and the state of the other end of first cable 110 and the other end of second cable 210 is not particularly limited and may be a device such as a camera, or may be a connection part for connecting to another device, cable, etc.

[0036] The first transmission line 112 and the second transmission line 212 are each electrically connected to a predetermined location of the relay member 30 , and the first transmission line 112 and the second transmission line 212 are electrically connected via the relay member 30 .

[0037] The specifications of the relay board 30 are not particularly limited, and may be a rigid board, a printed board such as a flexible printed board (FPC), or a molded interconnect device (MID) which is a three-dimensional molded circuit component.

[0038] Although there is no particular limitation on the dimensions of the relay member 30, since the present invention is intended for use in narrow spaces, it is desirable to make the dimension in the width direction as small as possible, preferably 5 mm or less, and the dimension in the length direction is preferably 20 mm or less, more preferably 10 mm or less.

[0039] On the other hand, since the relay member 30 needs to connect the first transmission line 112 and the second transmission line 212 that constitute the first cable 110 and the second cable 210, the dimensions of the relay member 30 may be appropriately adjusted depending on the number and outer diameter of the first transmission line 112 and the second transmission line 212.

[0040] The relay member 30 is provided with conductive pads 50 to which the first transmission line 112 and the second transmission line 212 are connected. As long as the first transmission line 112 and the second transmission line 212 are electrically connected via the conductive pads 50, the material and specifications are not particularly limited, and it is sufficient to select and use an appropriate material according to the specifications of the transmission line 12 to be connected and the desired electrical characteristics, etc.

[0041] The connection points between the first transmission path 112 and the relay member 30 and the connection points between the second transmission path 212 and the relay member 30 are preferably connected by a conductive joining member such as solder or a conductive adhesive, and when solder is used, the material is not particularly limited, but examples of the solder include eutectic solder made of lead and tin, lead-free solder made of tin, silver and copper, and solder containing zinc, bismuth, indium, etc. Connection methods other than those using conductive joining members include pressure welding, spot welding, and fusion joining using high-frequency induction heating.

[0042] In the present invention, the first shield layer 111 and the second shield layer 211 are electrically connected via the conductive member 40, so that both can be grounded to a common ground. This makes it possible to suppress noise generated in the first transmission path 112 and the second transmission path 212, thereby contributing to improved transmission characteristics.

[0043] In the present invention, a structure in which the relay member 30 is housed inside the conductive member 40 can be preferably used. By adopting this structure, the periphery of the relay member 30 and the connection portion between the first transmission path 112 and the second transmission path 212 are covered by the conductive member 40, and the conductive member 40 functions as a shield member for the periphery of the relay member 30.

[0044] The conductive member 40 functions as a shielding member for the periphery of the relay member 30, thereby preventing external noise and the like from reaching the periphery of the relay member 30, and thus contributing to maintaining the transmission characteristics of the connection structure 1.

[0045] Possible configurations of the conductive member 40 include a configuration in which the conductive member 40 also serves as a protective housing for accommodating the relay member 30, a configuration in which the conductive member 40 is integrated with a protective housing for accommodating the relay member 30, and a configuration in which the conductive member 40 and the protective housing for accommodating the relay member 30 are separate bodies.

[0046] One example of an embodiment in which the conductive member 40 also serves as a protective housing for accommodating the relay member 30 is an embodiment in which the relay member 30 and one end of the first cable 110 and the second cable 210 are accommodated in a protective housing made of a conductive metal such as copper, aluminum, or stainless steel.

[0047] FIG. 1 shows this embodiment, in which the relay member 30 is surrounded by a metal wall, which not only enhances the shielding effect but also contributes to a smaller connection structure 1 and a reduced number of components.

[0048] If any inconvenience is anticipated due to metal being exposed on the outer surface of the protective housing, it is sufficient to provide insulating means such as housing the protective housing in an insulating case or covering the outer surface of the protective housing with an insulator.

[0049] One example of an embodiment in which the conductive member 40 is integrated with a protective housing for accommodating the relay member 30 is an embodiment in which the protective housing is made of a resin material, ceramics, or the like, and the contact portion between the first shield layer 111 and the second shield layer 211 and the surface of the inner chamber for accommodating the relay member 30 are metal-plated to form the conductive member 40. This embodiment contributes to reducing the weight of the connection structure 1.

[0050] A simple method for integrating the conductive member 40 with a protective housing for accommodating the relay member 30 is to form the conductive member 40 by metal plating the inner surface of the protective housing described above, but a form in which a metal plate is embedded in the wall surface of the protective housing to form the conductive member 40 can also be used.

[0051] One example of a separate protective housing for accommodating the conductive member 40 and the relay member 30 is one in which the protective housing is formed from a resin material, ceramic, etc., and the conductive member 40 capable of accommodating the relay member 30 is formed from a metal plate while electrically connecting the first shielding layer 111 and the second shielding layer 211 separately from the protective housing, and the relay member 30 is also accommodated inside the protective housing.

[0052] The conductive member 40 is electrically connected to the first shield layer 111 and the second shield layer 211, but the method of connection is not particularly limited, and it is sufficient that the connection be made to the extent that a noise suppression effect is obtained by the electrical connection between the first shield layer 111 and the second shield layer 211.

[0053] One example of a method for connecting the conductive member 40 to the first shield layer 111 and the second shield layer 211 is connection by crimping, which is typified by rivet fixing. Connection by crimping ensures electrical connection and mechanical strength, so that the fixing strength of the first cable 110 and the second cable 210 to the conductive member 40 can be increased, which contributes to preventing damage to the connection structure 1 when unexpected tensile stress is generated in the first cable 110 and the second cable 210.

[0054] When adopting the above-mentioned embodiment in which the conductive member 40 also serves as the protective housing, or the embodiment in which the inner surface of the protective housing is metal-plated to form the conductive member 40, the shape of the surface of the protective housing that contacts the first shield layer 111 and the second shield layer 211 is made into a fixing mechanism suitable for crimping fixation, thereby ensuring a reliable connection between the conductive member 40 and the first shield layer 111 and the second shield layer 211.

[0055] Fig. 2 shows an example of an embodiment in which a fixing mechanism is provided in conductive member 40, and Fig. 2(b) is a cross section taken along line AA in Fig. 2(a). In the embodiment shown in Fig. 2, conductive member 40 is made up of two parts (40A, 40B), which are combined together to be fixed to shield layer 11 by crimping in a hexagonal crimp manner.

[0056] In the portion where the first shield layer 111 and the second shield layer 211 are connected to the conductive member 40, if there is a possibility that the electrical connection may be insufficient due to a gap or the like, an auxiliary member 14 may be used. Specific examples of the auxiliary member 14 include solder, a conductive seal, a metal pipe, and the like.

[0057] In the embodiment shown in FIG. 2, a first auxiliary member 114 and a second auxiliary member 214 are added to the first shielding layer 111 and the second shielding layer 211 to increase the outer diameter of the shielding layer 11, thereby promoting a reliable electrical connection and increasing the strength of the crimping fixation.

[0058] In addition, in FIG. 2, the first transmission path 112 and the second transmission path 212 are illustrated as being connected to both the front and back surfaces of the relay member 30, but the manner in which the first transmission path 112 and the second transmission path 212 are connected to the relay member 30 is not limited to this and can be selected as appropriate.

[0059] In the present invention, as shown in Fig. 3, a strength member fixing portion 41 may be provided on the conductive member 40. When the strength member 13 is present in at least one of the first cable 110 and the second cable 210, in addition to connecting and fixing the first shield layer 111 and the second shield layer 211 to the conductive member 40, fixing the strength member 13 to the strength member fixing portion 41 of the conductive member 40 increases the tensile strength and enables the strength member 13 to function as a tension member, making it possible to reduce the load on the transmission line 12, the relay member 30, and their respective connections when tension is applied.

[0060] The tension members 13 may be linear members made of materials known as tension members, such as aramid fiber, nylon fiber, fiber reinforced plastic (FRP), SUS wire, steel wire, and piano wire.

[0061] Considering the ease of fixing to the tension member fixing portion 41, it is preferable to use tension members 13 made of polymer fibers such as aramid fibers, nylon fibers, etc.

[0062] Examples of cable 10 using strength member 13 include a strength member 13 provided at the center of the cross section of cable 10, a strength member 13 used as an intermediate member that fills the gaps between transmission lines 12 in order to maintain the cross section of cable 10 in a circular shape, and a strength member 13 that replaces some of the conductor wires that make up shield layer 11.

[0063] The connection structure 1 of the present invention can suppress the increase in dimensions of the cable connection portion and has an advantageous structure for miniaturization, so that it can be easily inserted into narrow spaces within equipment and can be particularly suitably used as a relay connector to be installed in the middle of wiring.

[0064] Since the connection structure 1 of the present invention can be used in the middle of wiring, it can also be suitably used as a connection part for cables of different diameters, such as connecting a thin-diameter cable to be inserted into a narrow space and a thick-diameter cable with excellent transmission characteristics to be used outside of narrow spaces.

[0065] When the connection structure 1 of the present invention is used as a relay connector, as shown in FIG. 4, it is preferable to use an embodiment in which the relay member 30 is divided into a first relay member 130 and a second relay member 230, and the first relay member 130 and the second relay member 230 are electrically connected.

[0066] In a structure in which the first relay member 130 and the second relay member 230 are connected, if an abnormality, damage, etc. occurs on either the side of the first cable 110 connected to the first relay member 130 or the side of the second cable 210 connected to the second relay member 230, it is possible to separate the first relay member 130 and the second relay member 230 and replace the cable 10 on the side where the abnormality, etc. has occurred.

[0067] In particular, when one of the cables 10 is frequently broken, such as when an extremely fine wire is used as the transmission path of a thin cable, repair can be achieved by replacing only the broken cable 10, which is economical and easy to work with.

[0068] For this reason, when electrically connecting the first relay member 130 and the second relay member 230, it is desirable to connect them by pressing them together so that they are detachable.

[0069] The connection structure 1 will be described in more detail below by way of examples, but the scope of the present invention is not limited to these examples. EXAMPLES

[0070] [Example 1] The connection structure 1 of the first embodiment shown in FIG. 5 is a connection structure 1 in which a first transmission line 112 of a first cable 110 and a second transmission line 212 of a second cable 210 are connected to a relay member 30.

[0071] The first cable 110 was configured by placing an aramid fiber with an outer diameter of 0.2 mm at the center as the first tensile member 113, wrapping a PTFE tape around the outer circumference of 32 AWG42 coaxial cables twisted together as a plurality of first transmission paths 112, wrapping a tin-plated soft copper wire horizontally around the outer circumference of the tape layer as the first shield layer 111, and covering the outer circumference of the first shield layer 111 with a PFA coating. The outer diameter of the first cable 110 was 3 mm, and the area of ​​the first shield layer 111 connected to the conductive member 40 was thinly soldered as the first auxiliary member 114.

[0072] The second cable 210 is configured by placing an aramid fiber with an outer diameter of 0.05 mm at the center as the second tensile member 213, wrapping a PTFE tape around the periphery of 32 AWG48 coaxial cables twisted together as a plurality of second transmission paths 212, wrapping a tin-plated soft copper wire horizontally around the outer periphery of the tape layer as the second shield layer 211, and covering the outer periphery with a PFA coating. The outer diameter of the second cable 210 is 1.46 mm, and the area of ​​the second shield layer 211 connected to the conductive member 40 is thinly soldered as the second auxiliary member 214.

[0073] As the relay member 30, an FPC measuring 4 mm wide and 6.5 mm long and having conductive pads 50 and conductive patterns on both sides corresponding to the electrical connection between 32 coaxial cables was used, and the first transmission path 112 and the second transmission path 212 were each connected by soldering.

[0074] A pair of aluminum parts 40A, 40B were prepared, each of which had an inner chamber capable of accommodating relay member 30 in the center, and grooves in which each shield layer 11 can be fixed in a hexagonal crimp shape as shown in Fig. 2(b) as a fixing mechanism at the contact portion between first shield layer 111 and second shield layer 211. One end of first shield layer 111 and one end of second shield layer 211 were sandwiched between the grooves and fixed to complete connection structure 1 of Example 1. The pair of aluminum parts 40A, 40B serve as a protective housing that also serves as conductive member 40.

[0075] A strength member fixing portion 41 was formed on one of the pair of aluminum parts (40B), and the first strength member 113 of the first cable 110 and the second strength member 213 of the second cable 210 were fixed thereto in advance.

[0076] [Example 2] The connection structure 1 of the second embodiment shown in FIG. 6 is a connection structure 1 in which the first transmission path 112 of the first cable 110 is connected to the first relay member 130, and the second transmission path 212 of the second cable 210 is connected to the second relay member 230, and the first relay member 130 and the second relay member 230 are detachably connected.

[0077] The first cable 110 and the second cable 210 used in the second embodiment are the same as those used in the first embodiment.

[0078] The first relay member 130 was an FPC with a width of 4 mm and a length of 7.5 mm, which had conductive pads 50 and a conductive pattern corresponding to electrical connection with 32 coaxial cables and the second relay member 230, and the first transmission path 112 was connected by soldering.

[0079] The second relay member 230 was an FPC with a width of 4 mm and a length of 7 mm, which had conductive pads 50 and a conductive pattern corresponding to electrical connection with 32 coaxial cables and the first relay member 130, and the second transmission path 212 was connected by soldering.

[0080] As shown in FIG. 4(a), on both sides of the width direction of the first relay member 130 and the second relay member 230, side pieces each having a width of 1.5 mm and a length of 4 mm are provided integrally with the FPC, and a through hole is provided in the center of the side piece.

[0081] A pair of aluminum parts 40A, 40B were prepared, which had an inner chamber in the center capable of accommodating the connection part between the first relay member 130 and the second relay member 230, and grooves in which the first shield layer 111 and the second shield layer 211 can be fixed in a hexagonal crimp shape as shown in Fig. 2(b) as a fixing mechanism at the contact parts between the first shield layer 111 and the second shield layer 211. One end of the first shield layer 111 and one end of the second shield layer 211 were sandwiched between the grooves and fixed to complete the connection structure 1 of Example 2. The pair of aluminum parts 40A, 40B serve as a protective housing that also serves as the conductive member 40.

[0082] As in Example 1, one of the pair of aluminum parts (40B) was formed with a strength member fixing portion 41, to which the first strength member 113 of the first cable 110 and the second strength member 213 of the second cable 210 were respectively fixed in advance.

[0083] In addition, one of the pair of aluminum parts (40A) is provided with a positioning pin and the other (40B) is provided with a receiving hole for the positioning pin. When the pair of aluminum parts 40A, 40B are assembled, the positioning pin is inserted into the through holes provided in the side pieces of the first relay member 130 and the second relay member 230, thereby aligning the first relay member 130 and the second relay member 230 and reliably establishing an electrical connection between them.

[0084] As shown in FIG. 6, a pair of aluminum parts 40A, 40B are provided with elastic members 42 that press the first relay member 130 and the second relay member 230 from the back side, and the elastic members 42 ensure an electrical connection between the first relay member 130 and the second relay member 230.

[0085] In the connection structure 1 of Example 2, the connection portion between the first relay member 130 and the second relay member 230 is detachably connected by the elastic member 42. Therefore, the connection between the first relay member 130 and the second relay member 230 can be easily released by disassembling the protective housing. Even if an abnormality occurs on either the first cable 110 side or the second cable 210 side, it is possible to replace only one of them. [Industrial Applicability]

[0086] The connection structure of the present invention can be suitably used in narrow spaces, and since the effects of external noise are suppressed even in environments where noise is generated, it can be used in combination with various industrial devices.

[0087] Furthermore, when the two components 40A, 40B described in the embodiment are combined to form a protective housing that also serves as the conductive member 40, a sealing member such as a gasket or an O-ring can be sandwiched between the two components 40A, 40B to provide a waterproof structure for the relay member 30, etc.

[0088] Since this is a connection structure between cables that is suitable for use in narrow spaces, a configuration can be adopted in which the length of the thin-diameter cable is kept to the minimum necessary and it is connected to a thick-diameter cable, thereby achieving both use in narrow spaces and minimizing signal loss. [Explanation of symbols]

[0089] 1 Connection structure 10 Cable 11 Shielding layer 12 Transmission Line 13 Tensile strength body 14 Auxiliary Materials 110 First Cable 111 First shield layer 112 First Transmission Line 113 1st tensile strength body 114 First auxiliary member 210 Second Cable 211 Second shield layer 212 Second Transmission Line 213 2nd tensile strength body 214 Second auxiliary member 30 Intermediate parts 130 First relay member 230 Second relay member 40 Conductive material 40A, 40B Conductive material components 41 Tensile strength body fixing part 42 Elastic member 50 Conductive Pad

Claims

1. a first cable having a first transmission line and a first shield layer; A connection structure electrically connecting a second transmission line and a second cable having a second shielding layer, The first transmission path and the second transmission path are electrically connected via a relay member, The first shield layer and the second shield layer are electrically connected to each other via a conductive member.

2. 2. The connection structure according to claim 1, wherein the relay member is housed inside the conductive member.

3. 3. The connection structure according to claim 2, wherein the conductive member also serves as a protective housing for housing the relay member.

4. 4. The connection structure according to claim 2 or 3, wherein at least one of the first cable and the second cable has a strength member, and the conductive member is provided with a strength member fixing portion to which the strength member is fixed.

5. 4. The connection structure according to claim 1, wherein the conductive member is provided with a fixing mechanism for crimping and fixing at least one of the first shielding layer and the second shielding layer.

6. 5. The connection structure according to claim 4, wherein the conductive member is provided with a fixing mechanism for crimping and fixing at least one of the first shield layer and the second shield layer.

7. a first relay member electrically connected to one end of a first cable having a first transmission line and a first shield layer; a second relay member electrically connected to one end of a second cable having a second transmission path and a second shielding layer; A connection structure electrically connecting the first relay member and the second relay member, The first shield layer and the second shield layer are electrically connected to each other via a conductive member.

8. 8. The connection structure according to claim 7, wherein the first relay member and the second relay member are housed inside the conductive member.

9. 9. The connection structure according to claim 8, wherein the conductive member also serves as a protective housing for housing the first relay member and the second relay member.

10. 10. The connection structure according to claim 8 or 9, wherein at least one of the first cable and the second cable has a strength member, and the conductive member is provided with a strength member fixing portion to which the strength member is fixed.

11. 10. The connection structure according to claim 7, wherein the conductive member is provided with a fixing mechanism for crimping and fixing at least one of the first shielding layer and the second shielding layer.

12. 11. The connection structure according to claim 10, wherein the conductive member is provided with a fixing mechanism for crimping and fixing at least one of the first shield layer and the second shield layer.

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