Coaxial cable conductive structure and connector mating body

Abstract

To provide a coaxial cable conduction structure and connector mating body that can maintain high-quality transmission characteristics. [Solution] The coaxial cable conductivity structure 1 is a structure in which a first coaxial cable 23 and a second coaxial cable 33 are electrically connected. Here, the end face 2311 of the first central conductor 231 of the first coaxial cable 23 is formed such that the first plated portion 235 protrudes beyond the end face 2321 of the first internal insulator 232. Similarly, the end face 3311 of the second central conductor 331 of the second coaxial cable 33 is formed such that the second plated portion 335 protrudes beyond the end face 3321 of the second internal insulator 332. With the first outer conductor 233 and the second outer conductor 333 electrically connected to each other via alignment sleeves 34, 34A, and 34B, the first plated portion 235 and the second plated portion 335 are abutted against each other.

Description

Technical Field

[0001] The present invention relates to a conduction structure of a coaxial cable and a connector fitting body.

Background Art

[0002] As a conventional conduction structure of this type of coaxial cable, a structure using a coaxial relay connector disclosed in Patent Document 1 has been proposed. In this Patent Document 1, an external conductor connected to a braided wire of a coaxial cable, an insulating cylindrical body fitted inside the external conductor, and a center conductor held by the insulating cylindrical body and arranged coaxially with the external conductor are disclosed.

[0003] When the first coaxial cable and the second coaxial cable are conductively connected using the coaxial relay connector, while inserting the core wire of the first coaxial cable into one end of the center conductor, the braided wire of the first coaxial cable is connected to one end of the external conductor. Also, while inserting the core wire of the second coaxial cable into the other end of the center conductor, the braided wire of the second coaxial cable is connected to the other end of the external conductor. By doing so, the core wire of the first coaxial cable and the core wire of the second coaxial cable are conductively connected via the center conductor, and the braided wire of the first coaxial cable and the braided wire of the second coaxial cable are conductively connected via the external conductor.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, as with the conventional technology described above, if a coaxial connector is used to electrically connect the first coaxial cable and the second coaxial cable, a large discontinuity is formed in the transmission path. As a result, impedance mismatch occurs at the connection point between the first and second coaxial cables, which could degrade the transmission quality between the coaxial cables.

[0006] This invention has been made in view of the problems of the prior art. The object of this invention is to provide a coaxial cable conductive structure and a connector mating body that can maintain high-quality transmission characteristics. [Means for solving the problem]

[0007] An aspect of the present invention relates to a conductive structure for a coaxial cable in which a first coaxial cable and a second coaxial cable are electrically connected, wherein the first coaxial cable comprises a first central conductor, a first internal insulator provided on the outer circumference of the first central conductor, a first external conductor provided on the outer circumference of the first internal insulator, and a first outer sheath provided on the outer circumference of the first external conductor, and the second coaxial cable comprises a second central conductor, a second internal insulator provided on the outer circumference of the second central conductor, and the second internal insulator The device comprises a second outer conductor provided on the outer circumference and a second outer sheath provided on the outer circumference of the second outer conductor, wherein a first plated portion is formed on the end face of the first central conductor so as to protrude beyond the end face of the first internal insulator, and a second plated portion is formed on the end face of the second central conductor so as to protrude beyond the end face of the second internal insulator, and the first plated portion and the second plated portion are abutting against each other while the first outer conductor and the second outer conductor are electrically connected to each other via a centering sleeve.

[0008] A connector mating body according to an aspect of the present invention comprises a first connector and a second connector into which the first connector is mated, wherein the first connector comprises a first connector housing and a first coaxial cable held in the first connector housing, the second connector comprises a second connector housing into which the first connector housing is mated and a second coaxial cable held in the second connector housing and electrically connected to the first coaxial cable, the first coaxial cable comprises a first central conductor, a first internal insulator provided on the outer circumference of the first central conductor, a first external conductor provided on the outer circumference of the first internal insulator, and the first external conductor The first coaxial cable comprises a first outer sheath provided on the outer circumference of the first coaxial cable, the second coaxial cable comprises a second central conductor, a second internal insulator provided on the outer circumference of the second central conductor, a second outer conductor provided on the outer circumference of the second internal insulator, and a second outer sheath provided on the outer circumference of the second outer conductor, wherein the end face of the first central conductor is formed such that a first plated portion protrudes beyond the end face of the first internal insulator, and the end face of the second central conductor is formed such that a second plated portion protrudes beyond the end face of the second internal insulator, and the first plated portion and the second plated portion abut against each other while the first outer conductor and the second outer conductor are electrically connected to each other via a centering sleeve. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a coaxial cable conductive structure and a connector mating body that can maintain high-quality transmission characteristics. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a cross-sectional view showing an example of a connector mating body, separated into a first connector and a second connector. [Figure 2] Figure 2 is a cross-sectional view showing an example of a connector mating body. [Figure 3]Figure 3 is a cross-sectional view showing an example of a coaxial cable. [Figure 4] Figure 4 is a cross-sectional view showing an example of a sleeve for aligning the lead. [Figure 5] Figure 5 is a cross-sectional view showing a first modified example of the core-aligning sleeve. [Figure 6] Figure 6 is a cross-sectional view showing a second modified example of the core-aligning sleeve. [Modes for carrying out the invention]

[0011] The conductive structure of the coaxial cable and the connector mating body according to this embodiment will be described in detail below with reference to the drawings. Note that the dimensional ratios in the drawings are exaggerated for illustrative purposes and may differ from the actual ratios.

[0012] Furthermore, in the following embodiments, the extending direction (axial direction) of the first coaxial cable and the second coaxial cable is defined as the front-to-back direction for explanation. The first connector is described with the side facing the second connector defined as the front in the front-to-back direction, and the second connector is described with the side facing the first connector defined as the front in the front-to-back direction.

[0013] Furthermore, in the following, high-frequency connectors for relaying coaxial cables (the first coaxial cable and the second coaxial cable) are given as examples of the first and second connectors. The coaxial cables (the first coaxial cable and the second coaxial cable) are used for applications such as antenna cables and communication transmission lines.

[0014] As shown in Figures 1 and 2, the connector mating body 10 according to this embodiment comprises a first connector 20 and a second connector 30, and the connector mating body 10 is formed by mating the first connector 20 with the second connector 30.

[0015] The first connector 20 includes a first connector housing 21 and a first coaxial cable 23 held by the first connector housing 21. In this embodiment, the first connector 20 includes a first wire holding member 22, and the first coaxial cable 23 is held by the first connector housing 21 via the first wire holding member 22.

[0016] The first connector housing 21 includes a first housing body 211 and a first hood portion 212 continuously provided at the front end of the first housing body 211.

[0017] In this embodiment, a first cable accommodation space S1 that penetrates in the front-rear direction and can accommodate a part of the first coaxial cable 23 is formed in the first housing body 211. Further, in the first hood portion 212, a first space S2 that opens at the front end is formed so as to communicate with the first cable accommodation space S1. Therefore, in this embodiment, a space that penetrates in the front-rear direction is formed in the first connector housing 21, and this space includes the first cable accommodation space S1 and the first space S2.

[0018] Then, by inserting the first wire holding member 22 holding the first coaxial cable 23 into the first cable accommodation space S1 from the rear, the first coaxial cable 23 is held by the first housing body 211 via the first wire holding member 22. In this embodiment, the engaging protrusion 2111 formed on the first housing body 211 is engaged with the engaging groove 22111 formed on the first wire holding member 22, so that the first wire holding member 22 is attached to the first housing body 211.

[0019] Such a first connector housing 21 can be formed of a material having electrical insulation properties such as synthetic resin.

[0020] Note that the first housing body 211 and the first hood portion 212 can be formed in a cylindrical shape or a square cylindrical shape.

[0021] The first wire holding member 22 includes a first cylindrical wall portion 221 that opens forward and a first rear wall portion 222 that is continuously provided at the rear end of the first cylindrical wall portion 221. A first through hole 2221 that penetrates in the front-rear direction is formed in the first rear wall portion 222. Therefore, in the present embodiment, a space that penetrates in the front-rear direction is also formed in the first wire holding member 22, and by inserting the first coaxial cable 23 into this space from the rear, the first coaxial cable 23 is held by the first wire holding member 22.

[0022] Specifically, the first cylindrical wall portion 221 includes a thick portion 2211 that has a thickness on the inner peripheral side and a thin portion 2212 that is continuously provided at the rear end of the thick portion 2211 and is thinner than the thick portion 2211. When the first coaxial cable 23 is inserted into the space formed in the first wire holding member 22 from the rear, the outer surface of the first coaxial cable 23 is in sliding contact with the inner surface of the thick portion 2211. By doing so, the first coaxial cable 23 is held in a state where it can be slid in the front-rear direction on the thick portion 2211.

[0023] Furthermore, in the present embodiment, the first cylindrical wall portion 221 includes an engaging portion 2213 that is continuously provided so as to protrude forward at the front end of the thick portion 2211. A hook portion 22131 that protrudes inward is formed on the inner peripheral surface of the engaging portion 2213. When the first connector 20 is fitted to the second connector 30, a second wire holding member 32 described later is inserted into the engaging portion 2213, and the second wire holding member 32 is held by the first wire holding member 22 by the hook portion 22131.

[0024] In addition, in the present embodiment, an engaging groove 22111 is formed on the outer periphery of the boundary portion between the thick portion 2211 and the engaging portion 2213 in the first cylindrical wall portion 221.

[0025] Furthermore, when the first coaxial cable 23 is held by the thickened portion 2211, a space is formed between the outer surface of the first coaxial cable 23 and the inner surface of the thinned portion 2212. In this embodiment, a spring 24, which acts as a biasing member to bias the first coaxial cable 23 forward, is housed in this space. Therefore, in this embodiment, the space formed between the outer surface of the first coaxial cable 23 and the inner surface of the thinned portion 2212 is the biasing member housing space S3. It is also possible to configure the first coaxial cable 23 to be biased forward using an elastic body other than the spring 24. That is, it is possible to use an elastic body other than the spring 24 as the biasing member.

[0026] Such a first wire holding member 22 can also be formed from an electrically insulating material, such as synthetic resin.

[0027] As shown in Figure 3, the first coaxial cable 23 comprises a first central conductor 231 as a core wire located in the center, and a first internal insulator 232 as a dielectric material provided around the first central conductor 231 (outer circumference). The first coaxial cable 23 also comprises a first external conductor 233 as a shielding layer provided around the first internal insulator 232 (outer circumference), and a first outer sheath 234 provided around the first external conductor 233 (outer circumference). This first outer sheath 234 functions as a protective layer to protect the first external conductor 233.

[0028] In this embodiment, the first coaxial cable 23 is configured such that the first outer conductor 233 and the first internal insulator 232 are exposed to the outside at the front end. Specifically, the end face 2331 of the first outer conductor 233 is located in front of the end face 2341 of the first outer sheath 234, and the end face 2321 of the first internal insulator 232 is located in front of the end face 2331 of the first outer conductor 233. This ensures that the first outer conductor 233 and the first internal insulator 232 are exposed to the outside at the front end of the first coaxial cable 23. This configuration can be obtained, for example, by removing the first outer sheath 234 in front of a predetermined position and removing the first outer conductor 233 in front of a predetermined position. In this embodiment, the end face 2311 of the first central conductor 231 and the end face 2321 of the first internal insulator 232 are located at approximately the same position in the front-to-back direction.

[0029] Furthermore, in this embodiment, a fixing ring 25 is fixed to the outer surface of the first coaxial cable 23, that is, the outer surface of the first outer sheath 234, and the first coaxial cable 23 is biased forward by the spring 24 pressing the fixing ring 25 forward.

[0030] On the other hand, the second connector 30 comprises a second connector housing 31 and a second coaxial cable 33 held in the second connector housing 31. In this embodiment, the second connector 30 also includes a second wire holding member 32, and the second coaxial cable 33 is held in the second connector housing 31 via this second wire holding member 32.

[0031] The second connector housing 31 comprises a second housing body 311 and a second hood portion 312 connected to the front end of the second housing body 311.

[0032] In this embodiment, the second housing body 311 has a second cable accommodation space S4 that penetrates in the front-to-back direction and can accommodate a portion of the second coaxial cable 33. In addition, the second hood portion 312 has a second space S5 that opens at the front end and communicates with the second cable accommodation space S4. Therefore, in this embodiment, the second connector housing 31 has a space that penetrates in the front-to-back direction, and this space comprises the second cable accommodation space S4 and the second space S5.

[0033] Then, by inserting the second wire holding member 32, which holds the second coaxial cable 33, into the second cable housing space S4 from the rear, the second coaxial cable 33 is held in the second housing body 311 via the second wire holding member 32. In this embodiment, the second wire holding member 32 is attached to the second housing body 311 by engaging the engaging projection 3111 formed on the second housing body 311 with the engaging groove 32111 formed on the second wire holding member 32.

[0034] Such a second connector housing 31 can also be formed from an electrically insulating material, such as synthetic resin.

[0035] Furthermore, the second housing body 311 and the second hood portion 312 can be formed in a cylindrical shape or in a rectangular tube shape.

[0036] The second wire holding member 32 comprises a second cylindrical wall portion 321 that opens forward and a second rear wall portion 322 connected to the rear end of the second cylindrical wall portion 321, and a second through hole 3221 that penetrates in the front-rear direction is formed in this second rear wall portion 322. Therefore, in this embodiment, a space that penetrates in the front-rear direction is also formed in the second wire holding member 32, and by inserting the second coaxial cable 33 into this space from the rear, the second coaxial cable 33 is held by the second wire holding member 32.

[0037] Specifically, the second cylindrical wall portion 321 comprises a relatively wide enlarged diameter portion 3211 and a narrowed diameter portion 3212 connected to the front end of the enlarged diameter portion 3211, which is narrower than the enlarged diameter portion 3211. When the second coaxial cable 33 is inserted from the rear into the space formed in the second wire holding member 32, the outer surface of the second coaxial cable 33 is held by the holding projection 32112 formed on the inner surface of the enlarged diameter portion 3211. In this way, the second coaxial cable 33 is held in the enlarged diameter portion 3211. At this time, the second coaxial cable 33 is held in the enlarged diameter portion 3211 in a state where it cannot slide in the front-to-back direction.

[0038] Furthermore, in this embodiment, when the first connector 20 is fitted into the second connector 30, the reduced diameter portion 3212 of the second wire holding member 32 is inserted into the engaging portion 2213. The second wire holding member 32 is then held by the first wire holding member 22 by the hook portion 22131.

[0039] In this embodiment, an engagement groove 32111 is formed on the outer circumference of the central part of the enlarged diameter portion 3211 in the first cylindrical wall portion 221.

[0040] Such a second wire holding member 32 can also be formed from an electrically insulating material, such as synthetic resin.

[0041] In this embodiment, the second coaxial cable 33 is the same coaxial cable as the first coaxial cable 23. Therefore, as shown in Figure 3, the second coaxial cable 33 also comprises a second central conductor 331 as a core wire located in the center, and a second internal insulator 332 as a dielectric provided around the second central conductor 331 (outer circumference). The second coaxial cable 33 also comprises a second outer conductor 333 as a shielding layer provided around the second internal insulator 332 (outer circumference), and a second outer sheath 334 provided around the second outer conductor 333 (outer circumference). This second outer sheath 334 functions as a protective layer to protect the second outer conductor 333.

[0042] In this embodiment, the second coaxial cable 33 is configured such that the second outer conductor 333 and the second internal insulator 332 are exposed to the outside at the front end. Specifically, the end face 3331 of the second outer conductor 333 is located in front of the end face 3341 of the second outer sheath 334, and the end face 3321 of the second internal insulator 332 is located in front of the end face 3331 of the second outer conductor 333. This ensures that the second outer conductor 333 and the second internal insulator 332 are exposed to the outside at the front end of the second coaxial cable 33. This configuration can be achieved, for example, by removing the second outer sheath 334 in front of a predetermined position and removing the second outer conductor 333 in front of a predetermined position. In this embodiment, the end face 3311 of the second central conductor 331 and the end face 3321 of the second internal insulator 332 are located at approximately the same position in the front-to-back direction.

[0043] In this embodiment, a core-aligning sleeve 34 made of a conductive material such as metal is attached to the front end of the second coaxial cable 33 in a state where it protrudes forward of the second coaxial cable 33. Specifically, the core-aligning sleeve 34 has a cylindrical portion 341 that opens in the front-rear direction, and this cylindrical portion 341 is formed such that its inner diameter is approximately the same as the outer diameter of the second outer conductor 333 and its outer diameter is approximately the same as the inner diameter of the reduced-diameter portion 3212. The second coaxial cable 33 is inserted into the inside of the cylindrical portion 341 from the rear, and the outer surface of the second outer conductor 333 is brought into contact with the inner surface of the cylindrical portion 341, thereby electrically connecting the core-aligning sleeve 34 and the second outer conductor 333. In this way, the core-aligning sleeve 34 is attached to the front end of the second coaxial cable 33 with the outer surface of the second outer conductor 333 in contact with the inner surface of the cylindrical portion 341.

[0044] When holding the second coaxial cable 33 in the enlarged diameter section 3211, the alignment sleeve 34 is attached to the front end of the second coaxial cable 33, and the cylindrical section 341 is inserted into the reduced diameter section 3212 from the rear and fitted into place. At this time, the flange section 342, which is formed to protrude radially outward from the rear end of the cylindrical section 341, is brought into contact with the stepped section formed at the boundary between the reduced diameter section 3212 and the enlarged diameter section 3211. This ensures that the second wire holding member 32 and the second coaxial cable 33 are positioned correctly.

[0045] Then, with the second wire holding member 32 and the second coaxial cable 33 positioned, the front end of the cylindrical portion 341 is made to protrude forward of the front end of the reduced diameter portion 3212. This ensures that when the first connector 20 is fitted into the second connector 30, the outer surface of the first external conductor 233 comes into contact with the inner surface of the cylindrical portion 341. By bringing the outer surface of the first external conductor 233 into contact with the inner surface of the cylindrical portion 341, the first coaxial cable 23 and the second coaxial cable 33 are aligned (axis-aligned) by the alignment sleeve 34. Furthermore, with the first coaxial cable 23 and the second coaxial cable 33 aligned (axis-aligned) by the alignment sleeve 34, the first external conductor 233 and the second external conductor 333 are electrically connected via the cylindrical portion 341.

[0046] It is also possible to use the alignment sleeve 34A shown in Figure 5 instead of the alignment sleeve 34 shown in Figure 4.

[0047] In the alignment sleeve 34A shown in Figure 5, the inner diameter of the cylindrical portion 341 is made slightly smaller than the outer diameter of the outer conductors (first outer conductor 233 and second outer conductor 333), and a slit 3411 extending in the front-to-back direction is formed from the front end to the rear end of the cylindrical portion 341. When the outer conductors (first outer conductor 233 and second outer conductor 333) are inserted into the cylindrical portion 341, stress (elastic force) is generated toward the center of the cylindrical portion 341. In this way, the alignment sleeve 34A shown in Figure 5 functions as a split sleeve. By using such an alignment sleeve 34A, it becomes possible to more reliably establish an electrical connection between the first outer conductor 233 and the second outer conductor 333 by the cylindrical portion 341, and to perform alignment (axis alignment) with higher precision.

[0048] It is also possible to use the alignment sleeve 34B shown in Figure 6.

[0049] In the alignment sleeve 34B shown in Figure 6, a conductive portion 343 is formed on the inner surface of a cylindrical portion 341 made of a resin or other material that is easy to process. Such an alignment sleeve 34B can be obtained, for example, by performing a conductive treatment (such as conductive plating) on ​​the inner surface of the cylindrical portion 341. Using such an alignment sleeve 34B can produce almost the same function and effect as the alignment sleeve 34.

[0050] Then, with the first outer conductor 233 and the second outer conductor 333 electrically connected, the first central conductor 231 and the second central conductor 331 are made electrically connected.

[0051] In this embodiment, the first central conductor 231 and the second central conductor 331 can be connected electrically while maintaining high-quality transmission characteristics.

[0052] Specifically, a first plated portion 235 is formed on the end face 2311 of the first central conductor 231 so as to protrude forward of the end face 2321 of the first internal insulator 232. Similarly, a second plated portion 335 is formed on the end face 3311 of the second central conductor 331 so as to protrude forward of the end face 3321 of the second internal insulator 332.

[0053] Then, with the first outer conductor 233 and the second outer conductor 333 electrically connected to each other via the alignment sleeves 34, 34A, and 34B, the first plated portion 235 and the second plated portion 335 are abutted against each other. In this way, the first central conductor 231 and the second central conductor 331 are electrically connected to each other via the first plated portion 235 and the second plated portion 335.

[0054] Such plated portions (the first plated portion 235 and the second plated portion 335) can be obtained, for example, by removing the natural oxide film from the central conductor of a smoothly cut coaxial cable by dilute sulfuric acid treatment or the like, and then immersing it in a desired plating solution to perform electroplating. Specifically, this can be achieved by immersing the central conductor of a smoothly cut coaxial cable in the desired plating solution and applying a voltage from the other end of the cut surface to be plated. In this case, the internal insulator of the coaxial cable impregnated in the plating solution is not electroplated, so as a result only the central conductor is plated with the desired plating material, and a structure is obtained in which the plated portion of the central conductor protrudes slightly from the internal insulator. With such a protruding structure, poor contact caused by the end of the central conductor being pulled into the internal insulator is suppressed, and the central conductors can be made to contact each other more reliably.

[0055] Furthermore, since it is desirable for the plated portion to deform due to the pressure when the central conductors abut against each other, thereby increasing the contact area, it is preferable to form the plated portion using a soft conductive material.

[0056] For the soft conductive plating applied to the central conductor, for example, gold plating or silver plating can be used. Since these platings (gold plating and silver plating) do not easily form a surface oxide film, conductivity can be ensured by simple abutting stress between coaxial cables. In order to ensure conductivity by pressing and deforming each conductive plating at the abutting point, in the case of gold plating, a stress of 0.1~0.5 N / mm is required. 2 The above pressing force is 0.2~1.0 N / mm in the case of silver plating. 2 It is desirable to apply the above-mentioned pressure. While it is also possible to use plating that readily forms an oxide film, such as tin plating, in this case, a large abutting stress is required to break the surface oxide film and ensure conductivity. Therefore, it is preferable to use gold or silver plating, which do not readily form a surface oxide film.

[0057] In this embodiment, when the first connector 20 is fitted into the second connector 30 to form the connector mating body 10, the first external conductor 233 and the second external conductor 333 are electrically connected to each other via the alignment sleeves 34, 34A, and 34B. Furthermore, with the first external conductor 233 and the second external conductor 333 electrically connected to each other via the alignment sleeves 34, 34A, and 34B, the first plated portion 235 and the second plated portion 335 are abutted against each other.

[0058] In this embodiment, the first coaxial cable 23 and the second coaxial cable 33 are aligned by making the first external conductor 233 and the second external conductor 333 electrically connected to each other via alignment sleeves 34, 34A, and 34B. With the first coaxial cable 23 and the second coaxial cable 33 aligned, the first plated portion 235 and the second plated portion 335 are made to abut against each other.

[0059] In this way, the first central conductor 231 and the second central conductor 331 are electrically connected to each other via the first plated portion 235 and the second plated portion 335 without the use of intermediate components such as coaxial connectors or terminals.

[0060] This makes it possible to suppress the formation of large discontinuities in the transmission path passing through the first central conductor 231 and the second central conductor 331, thereby more reliably suppressing impedance mismatch in the transmission path. As a result, it becomes possible to more reliably suppress the deterioration of transmission quality, enabling conductive connection between the first central conductor 231 and the second central conductor 331 while maintaining high-quality transmission characteristics.

[0061] Furthermore, by ensuring that the first central conductor 231 and the second central conductor 331 are electrically connected to each other without the use of intermediate components such as coaxial connectors or terminals, the connector mating body 10 can be simplified. This makes it possible to achieve a conductive connection with a simpler configuration while maintaining high-quality transmission characteristics. Moreover, by ensuring that the first central conductor 231 and the second central conductor 331 are electrically connected to each other without the use of intermediate components such as coaxial connectors or terminals, the number of components can be reduced. This makes it possible to provide a connector mating body 10 that maintains high-quality transmission characteristics at a lower cost.

[0062] Furthermore, in this embodiment, the central conductors protruding from each other (the first plated portion 235 and the second plated portion 335) are butted together via alignment sleeves 34, 34A, and 34B, with their axes aligned. By making the butt joint connection between the protruding central conductors in this aligned state, it becomes possible to suppress the formation of discontinuous shapes in the transmission path due to misalignment between the central conductors. Examples of discontinuous shapes formed in the transmission path due to misalignment between the central conductors include steps formed by the misalignment. By suppressing the formation of discontinuous shapes in the transmission path in this way, the impedance is matched, and thus it becomes possible to conduct electrical connections between the first central conductor 231 and the second central conductor 331 while maintaining high-quality transmission characteristics.

[0063] Furthermore, in this embodiment, the first external conductor 233 and the second external conductor 333 are electrically connected via alignment sleeves 34, 34A, and 34B having an alignment function. Specifically, the first external conductor 233 and the second external conductor 333 are electrically connected via the cylindrical portion 341, which is formed to have approximately the same diameter from the front end to the bottom end. This makes it possible to suppress the formation of large discontinuities in the transmission path passing through the first external conductor 233 and the second external conductor 333. As a result, it is also possible to suppress impedance mismatch in the transmission path passing through the first external conductor 233 and the second external conductor 333.

[0064] Thus, in this embodiment, when the first connector 20 is mated with the second connector 30, the coaxial structure (coaxial structure of central conductor, internal insulator, and outer conductor) is maintained even at the connector connection portion (end face of the coaxial cable). This ensures that high-quality transmission characteristics are maintained even at the connector connection portion (end face of the coaxial cable).

[0065] Therefore, the connector mating body 10 according to this embodiment makes it possible to match the impedance of the transmission line, including the external conductors (first external conductor 233 and second external conductor 333). As a result, it becomes possible to establish a conductive connection between the first coaxial cable 23 and the second coaxial cable 33 while maintaining high-quality transmission characteristics.

[0066] Furthermore, in this embodiment, the connector mating body 10 is further equipped with a spring (biasing member) 24. This spring (biasing member) 24 biases the first coaxial cable 23 forward (in a direction in which the first plated portion 235 and the second plated portion 335 abut against each other).

[0067] This ensures that the electrical connection between the central conductors is maintained, allowing for a more reliable conductive connection between the first central conductor 231 and the second central conductor 331 while maintaining high-quality transmission characteristics.

[0068] Furthermore, in this embodiment, even when the first connector 20 and the second connector 30 are configured to be detachable, it is possible to establish a conductive connection between the first coaxial cable 23 and the second coaxial cable 33 while maintaining high-quality transmission characteristics. Specifically, when the first connector 20 and the second connector 30 are mated together, the alignment function and pressing function mounted on the connector mating body 10 maintain the alignment and conductive connection between the first central conductor 231 and the second central conductor 331. In other words, when the connector mating body 10 is assembled, the alignment function and pressing function maintain the axis alignment between the first central conductor 231 and the second central conductor 331 and the abutting state between the first plated portion 235 and the second plated portion 335.

[0069] Thus, in this embodiment, by providing a connector mating body 10 having a centering function and a pressing function, it is possible to make a conductive connection while maintaining high-quality transmission characteristics even when the first connector 20 and the second connector 30 are configured to be detachable.

[0070] Furthermore, in this embodiment, when the first connector 20 is fitted into the second connector 30 to form the connector mating body 10, the coaxial cable conductive structure 1 is formed (see Figure 2). This coaxial cable conductive structure 1 is a structure in which the first coaxial cable 23 and the second coaxial cable 33 are electrically connected.

[0071] Then, the first outer conductor 233 and the second outer conductor 333 are electrically connected to each other via alignment sleeves 34, 34A, and 34B, and the first plated portion 235 and the second plated portion 335 are abutted against each other to form the conductive structure 1 of the coaxial cable. In this embodiment, by fitting the first connector 20 into the second connector 30 to form the connector mating body 10, a conductive structure 1 of the coaxial cable that can maintain high-quality transmission characteristics is also formed.

[0072] [Effects / Effects] The following describes the characteristic configuration of the coaxial cable conductivity structure and connector mating body shown in the above embodiment and its modifications, as well as the effects obtained therefrom.

[0073] The coaxial cable conductivity structure 1 shown in the above embodiment and its modified form is a structure in which the first coaxial cable 23 and the second coaxial cable 33 are electrically connected.

[0074] The first coaxial cable 23 of this coaxial cable conductive structure 1 comprises a first central conductor 231 and a first internal insulator 232 provided on the outer circumference of the first central conductor 231. The first coaxial cable 23 also comprises a first external conductor 233 provided on the outer circumference of the first internal insulator 232 and a first outer sheath 234 provided on the outer circumference of the first external conductor 233.

[0075] Similarly, the second coaxial cable 33 provided in the coaxial cable conductive structure 1 comprises a second central conductor 331 and a second internal insulator 332 provided on the outer circumference of the second central conductor 331. The second coaxial cable 33 also comprises a second external conductor 333 provided on the outer circumference of the second internal insulator 332 and a second outer sheath 334 provided on the outer circumference of the second external conductor 333.

[0076] Here, the first plated portion 235 is formed on the end face 2311 of the first central conductor 231 such that it protrudes beyond the end face 2321 of the first internal insulator 232. Similarly, the second plated portion 335 is formed on the end face 3311 of the second central conductor 331 such that it protrudes beyond the end face 3321 of the second internal insulator 332.

[0077] Then, with the first outer conductor 233 and the second outer conductor 333 electrically connected to each other via the alignment sleeves 34, 34A, and 34B, the first plated portion 235 and the second plated portion 335 are abutting against each other.

[0078] As described above, in the coaxial cable conductivity structure 1 shown in the embodiment and its modified form, the first coaxial cable 23 and the second coaxial cable 33 are electrically connected to each other while being aligned (axis-aligned) by the alignment sleeves 34, 34A, and 34B.

[0079] Specifically, the first coaxial cable 23 and the second coaxial cable 33 are aligned (axis-aligned) by making the first outer conductor 233 and the second outer conductor 333 electrically connected to each other via alignment sleeves 34, 34A, and 34B. Then, with the first coaxial cable 23 and the second coaxial cable 33 aligned (axis-aligned), the first plated portion 235 and the second plated portion 335 are made to abut each other. In this way, the first central conductor 231 and the second central conductor 331 are electrically connected to each other via the first plated portion 235 and the second plated portion 335 without using intermediate components such as coaxial connectors or terminals.

[0080] This makes it possible to suppress the formation of large discontinuities in the transmission path passing through the first central conductor 231 and the second central conductor 331, thereby more reliably suppressing impedance mismatch in the transmission path. As a result, it becomes possible to more reliably suppress the deterioration of transmission quality, enabling conductive connection between the first central conductor 231 and the second central conductor 331 while maintaining high-quality transmission characteristics.

[0081] Therefore, by using the configuration shown in the above embodiment and its modified form, it becomes possible to provide a coaxial cable conductive structure 1 that can maintain high-quality transmission characteristics.

[0082] Furthermore, by ensuring that the first central conductor 231 and the second central conductor 331 are electrically connected to each other without using intermediate components such as coaxial connectors or terminals, the conductive structure 1 of the coaxial cable can be simplified. As a result, it becomes possible to achieve a conductive connection with a simpler configuration while maintaining high-quality transmission characteristics.

[0083] Furthermore, by ensuring that the first central conductor 231 and the second central conductor 331 are electrically connected to each other without using intermediate components such as coaxial connectors or terminals, it becomes possible to reduce the number of components. As a result, it becomes possible to provide a coaxial cable conductive structure 1 that can maintain high-quality transmission characteristics at a lower cost.

[0084] Furthermore, in the coaxial cable conductivity structure 1 shown in the above embodiment and its modified form, the first outer conductor 233 and the second outer conductor 333 are electrically connected via alignment sleeves 34, 34A, and 34B having alignment functions. This makes it possible to suppress the formation of large discontinuities in the transmission path passing through the first outer conductor 233 and the second outer conductor 333. As a result, it is also possible to suppress impedance mismatch in the transmission path passing through the first outer conductor 233 and the second outer conductor 333.

[0085] Therefore, the coaxial cable conductivity structure 1 shown in the above embodiment and its modified form makes it possible to perform impedance matching of the transmission path, including the outer conductors (first outer conductor 233 and second outer conductor 333). As a result, it becomes possible to establish a conductive connection between the first coaxial cable 23 and the second coaxial cable 33 while maintaining high-quality transmission characteristics.

[0086] Furthermore, the coaxial cable conductivity structure 1 may also include a spring (biasing member) 24. This spring (biasing member) 24 may be used to bias at least one of the coaxial cables, the first coaxial cable 23 and the second coaxial cable 33, in a direction that causes the first plated portion 235 and the second plated portion 335 to abut against each other.

[0087] This makes it possible to establish an electrical connection between the first central conductor 231 and the second central conductor 331 while more reliably maintaining high-quality transmission characteristics.

[0088] Furthermore, the connector mating body 10 shown in the above embodiment and its modified form comprises a first connector 20 and a second connector 30 into which the first connector 20 is mated.

[0089] The first connector 20 comprises a first connector housing 21 and a first coaxial cable 23 held in the first connector housing 21. The second connector 30 comprises a second connector housing 31 into which the first connector housing 21 is mated, and a second coaxial cable 33 held in the second connector housing 31 and electrically connected to the first coaxial cable 23.

[0090] Here, the first coaxial cable 23 comprises a first central conductor 231 and a first internal insulator 232 provided on the outer circumference of the first central conductor 231. The first coaxial cable 23 also comprises a first external conductor 233 provided on the outer circumference of the first internal insulator 232 and a first outer sheath 234 provided on the outer circumference of the first external conductor 233.

[0091] Similarly, the second coaxial cable 33 comprises a second central conductor 331 and a second internal insulator 332 provided on the outer circumference of the second central conductor 331. The second coaxial cable 33 also comprises a second external conductor 333 provided on the outer circumference of the second internal insulator 332 and a second outer sheath 334 provided on the outer circumference of the second external conductor 333.

[0092] Furthermore, the first central conductor 231 has a first plated portion 235 formed on its end face 2311 such that it protrudes more than the end face 2321 of the first internal insulator 232. Similarly, the second central conductor 331 has a second plated portion 335 formed on its end face 3311 such that it protrudes more than the end face 3321 of the second internal insulator 332.

[0093] Then, with the first outer conductor 233 and the second outer conductor 333 electrically connected to each other via the alignment sleeves 34, 34A, and 34B, the first plated portion 235 and the second plated portion 335 are abutting against each other.

[0094] As described above, in the connector mating body 10 shown in the embodiment and its modified form, the first coaxial cable 23 and the second coaxial cable 33 are electrically connected to each other while being aligned (axis-aligned) by the alignment sleeves 34, 34A, and 34B.

[0095] Specifically, the first coaxial cable 23 and the second coaxial cable 33 are aligned (axis-aligned) by making the first outer conductor 233 and the second outer conductor 333 electrically connected to each other via alignment sleeves 34, 34A, and 34B. Then, with the first coaxial cable 23 and the second coaxial cable 33 aligned (axis-aligned), the first plated portion 235 and the second plated portion 335 are made to abut each other. In this way, the first central conductor 231 and the second central conductor 331 are electrically connected to each other via the first plated portion 235 and the second plated portion 335 without using intermediate components such as coaxial connectors or terminals.

[0096] This makes it possible to suppress the formation of large discontinuities in the transmission path passing through the first central conductor 231 and the second central conductor 331, thereby more reliably suppressing impedance mismatch in the transmission path. As a result, it becomes possible to more reliably suppress the deterioration of transmission quality, enabling conductive connection between the first central conductor 231 and the second central conductor 331 while maintaining high-quality transmission characteristics.

[0097] Therefore, by using the configuration shown in the above embodiment and its modified form, it becomes possible to provide a connector mating body 10 that can maintain high-quality transmission characteristics.

[0098] Furthermore, by ensuring that the first central conductor 231 and the second central conductor 331 are electrically connected to each other without using intermediate components such as coaxial connectors or terminals, the connector mating body 10 can be simplified. As a result, it becomes possible to achieve a conductive connection with a simpler configuration while maintaining high-quality transmission characteristics.

[0099] Furthermore, by ensuring that the first central conductor 231 and the second central conductor 331 are electrically connected to each other without the use of intermediate components such as coaxial connectors or terminals, it becomes possible to reduce the number of components. As a result, it becomes possible to provide a connector mating body 10 that can maintain high-quality transmission characteristics at a lower cost.

[0100] Furthermore, in the connector mating body 10 shown in the above embodiment and its modified form, the first external conductor 233 and the second external conductor 333 are electrically connected via alignment sleeves 34, 34A, and 34B having a centering function. This makes it possible to suppress the formation of large discontinuities in the transmission path passing through the first external conductor 233 and the second external conductor 333. As a result, it is also possible to suppress impedance mismatch in the transmission path passing through the first external conductor 233 and the second external conductor 333.

[0101] Therefore, using the connector mating body 10 shown in the above embodiment and its modified form makes it possible to perform impedance matching of the transmission path, including the external conductors (first external conductor 233 and second external conductor 333). As a result, it becomes possible to establish a conductive connection between the first coaxial cable 23 and the second coaxial cable 33 while maintaining high-quality transmission characteristics.

[0102] Furthermore, the connector mating body 10 may also include a spring (biasing member) 24. This spring (biasing member) 24 may be used to bias at least one of the coaxial cables, the first coaxial cable 23 and the second coaxial cable 33, in a direction that causes the first plated portion 235 and the second plated portion 335 to abut against each other.

[0103] This makes it possible to establish a conductive connection between the first central conductor 231 and the second central conductor 331 while more reliably maintaining high-quality transmission characteristics. Furthermore, even when the first connector 20 and the second connector 30 are configured to be detachable, it becomes possible to establish a conductive connection between the first coaxial cable 23 and the second coaxial cable 33 while maintaining high-quality transmission characteristics. Specifically, when the first connector 20 and the second connector 30 are mated together, the alignment function and pressing function mounted on the connector mating body 10 maintain the alignment and conductive connection between the first central conductor 231 and the second central conductor 331. In other words, when the connector mating body 10 is constructed, the alignment function and pressing function maintain the axis alignment of the first central conductor 231 and the second central conductor 331, and the abutting state between the first plated portion 235 and the second plated portion 335.

[0104] Thus, by using a connector mating body 10 that has both a centering function and a pressing function, it becomes possible to make a conductive connection while maintaining high-quality transmission characteristics, even when the first connector 20 and the second connector 30 are configured to be detachable.

[0105] [others] Although this embodiment has been described above, this embodiment is not limited to these, and various modifications are possible within the scope of the gist of this embodiment.

[0106] For example, in the above embodiment and its modified examples, a configuration is shown in which the first coaxial cable 23 is biased by a spring (biasing member) 24, but it is also possible to bias the second coaxial cable 33 by a spring (biasing member). Furthermore, it is also possible to bias both the first coaxial cable 23 and the second coaxial cable 33 by a spring (biasing member).

[0107] Furthermore, the specifications of the first and second housings, as well as other details (shape, size, layout, etc.), can be modified as needed. [Explanation of Symbols]

[0108] 1. Conductive structure of coaxial cable 10 Connector mating body 20 First connector 21 First connector housing 23. First coaxial cable 231 First central conductor 2311 End face 232 First internal insulator 2321 End face 233 First outer conductor 234 First outer layer 235 First plated part 24. Spring (biasing member) 30 Second connector 31 Second connector housing 33. Second coaxial cable 331 Second central conductor 3311 End face 332 Second internal insulator 3321 End face 333 Second outer conductor 334 Second outer layer 335 Second plated part 34. Sleeve for adjusting the core. 34A Core Alignment Sleeve 34B Core Alignment Sleeve

Claims

1. A coaxial cable conductivity structure in which a first coaxial cable and a second coaxial cable are electrically connected, The first coaxial cable comprises a first central conductor, a first internal insulator provided on the outer circumference of the first central conductor, a first external conductor provided on the outer circumference of the first internal insulator, and a first outer sheath provided on the outer circumference of the first external conductor. The second coaxial cable comprises a second central conductor, a second internal insulator provided on the outer circumference of the second central conductor, a second external conductor provided on the outer circumference of the second internal insulator, and a second outer sheath provided on the outer circumference of the second external conductor. The end face of the first central conductor is formed such that the first plated portion protrudes more than the end face of the first internal insulator. The end face of the second central conductor is formed such that the second plated portion protrudes more than the end face of the second internal insulator. With the first outer conductor and the second outer conductor electrically connected to each other via a centering sleeve, the first plated portion and the second plated portion are abutting against each other. The conductive structure of a coaxial cable.

2. The device further includes a biasing member that biases at least one of the first coaxial cable and the second coaxial cable in a direction that causes the first plated portion and the second plated portion to abut against each other. The conductive structure for a coaxial cable according to claim 1.

3. A connector mating body comprising a first connector and a second connector into which the first connector is mated, The first connector comprises a first connector housing and a first coaxial cable held in the first connector housing. The second connector comprises a second connector housing into which the first connector housing is fitted, and a second coaxial cable held in the second connector housing and electrically connected to the first coaxial cable. The first coaxial cable comprises a first central conductor, a first internal insulator provided on the outer circumference of the first central conductor, a first external conductor provided on the outer circumference of the first internal insulator, and a first outer sheath provided on the outer circumference of the first external conductor. The second coaxial cable comprises a second central conductor, a second internal insulator provided on the outer circumference of the second central conductor, a second external conductor provided on the outer circumference of the second internal insulator, and a second outer sheath provided on the outer circumference of the second external conductor. The end face of the first central conductor is formed such that the first plated portion protrudes more than the end face of the first internal insulator. The end face of the second central conductor is formed such that the second plated portion protrudes more than the end face of the second internal insulator. With the first outer conductor and the second outer conductor electrically connected to each other via a centering sleeve, the first plated portion and the second plated portion are abutting against each other. Connector mating body.

4. The device further includes a biasing member that biases at least one of the first coaxial cable and the second coaxial cable in a direction that causes the first plated portion and the second plated portion to abut against each other. The connector mating body according to claim 3.

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