Coaxial cable connector

Abstract

To provide a coaxial cable connector with which impedance matching can be improved.SOLUTION: A relay connector device 30, which is an example of a coaxial cable connector, is a relay connector device 30 including a connector 300 that relays a cable 390. The connector 300 includes a contact 340 containing a conductor, an internal housing 330 supporting the contact 340 and containing an insulator, and an impedance adjuster 360 having a part incorporated into the internal housing 330 and containing the conductor. The impedance adjuster 360 covers an exposed part of a core wire 391 of the cable 390 connected to the contact 340, the exposed part being exposed from the internal housing 330.SELECTED DRAWING: Figure 11

Description

[Technical field]

[0001] The present disclosure relates to coaxial cable connectors. [Background technology]

[0002] In the case of in-vehicle coaxial connectors, it is essential to adjust the impedance and improve the transmission characteristics in order to improve performance. In a relay connector device that relays cables, it is important to suppress an increase in impedance in the spatial layer at the crimped portion between the contact and the copper wire. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-107567 A Summary of the Invention [Problem to be solved by the invention]

[0004] For example, in a relay connector device as disclosed in Patent Document 1, a space layer is formed in the crimped portion between the contact and the copper wire. Such a space layer containing air increases the impedance and deteriorates the matching with the designed impedance.

[0005] The present disclosure has been made in order to solve such problems, and has an object to provide a coaxial cable connector that can improve impedance matching. [Means for solving the problem]

[0006] According to the aspect of the present disclosure, a coaxial cable connector is a coaxial cable connector equipped with a connector that relays a cable, the connector having a contact including a conductor, an insulator including an insulator supporting the contact, and an impedance adjusting member having a portion incorporated into the insulator and including the conductor, the impedance adjusting member covering an exposed portion of a core wire of the cable connected to the contact that is exposed from the insulator.

[0007] In the above-mentioned coaxial cable connector, the connector may further have a GND shell containing the conductor, the contact, the insulator and the impedance adjustment member being arranged inside the GND shell, and the impedance adjustment member being arranged in a space layer formed between the exposed portion and the GND shell.

[0008] In the coaxial cable connector, the impedance adjustment member may have a tubular shape with a central axis positioned at the contact and the core wire.

[0009] In the above coaxial cable connector, the cable includes the core wire including the conductor, a coating member having a portion covering the core wire and including the insulator, a shielding member having a portion covering the coating member and including the conductor, and an outer cover having a portion covering the shielding member and including the insulator, and the impedance adjustment member may cover an end of the coating member.

[0010] In the coaxial cable connector, the impedance adjustment member may be incorporated into the insulator by insert molding.

[0011] In the coaxial cable connector, the impedance adjustment member may be press-fitted into the insulator, thereby being incorporated into the insulator.

[0012] In the coaxial cable connector, the impedance adjustment member may be electrically connected to the GND shell.

[0013] In the above coaxial cable connector, the impedance adjustment member may be electrically disconnected from the GND shell, the contacts, and the core wire.

[0014] According to an aspect of the disclosure of the present application, a coaxial cable connector is provided with a first connector and a second connector for relaying a first cable and a second cable, the first connector includes a first contact including a conductor and including a convex portion at one end, a first insulator including an insulator supporting the first contact, and a first impedance adjustment member including the conductor and having a portion incorporated in the first insulator, the first impedance adjustment member being configured to adjust the impedance of the first insulator by adjusting the impedance of the first insulator in a first core wire of the first cable connected to the other end of the first contact. the second connector includes a second contact including the conductor and including a recess at one end, a second insulator including the insulator supporting the second contact, and a second impedance adjustment member having a portion incorporated in the second insulator and including the conductor, the second impedance adjustment member covers an exposed portion of a second core wire of the second cable connected to the other end of the second contact, the exposed portion being exposed from the second insulator, and the convex portion of the first contact fits into the recess of the second contact. Effect of the Invention

[0015] According to the present disclosure, it is possible to provide a coaxial cable connector capable of improving impedance matching. [Brief description of the drawings]

[0016] [Figure 1] 11 is a cross-sectional view illustrating a relay connector device according to a comparative example. [Diagram 2]11 is a perspective view illustrating a connector in a relay connector device according to a comparative example. FIG. [Diagram 3] 11 is a perspective view illustrating a connector in a relay connector device according to a comparative example. FIG. [Figure 4] 11 is an exploded perspective view illustrating each member constituting a connector in a relay connector device according to a comparative example. FIG. [Diagram 5] 13 is a perspective view illustrating an inner housing in a relay connector device according to a comparative example. FIG. [Figure 6] 11 is an exploded perspective view illustrating each member constituting a connector in a relay connector device according to a comparative example. FIG. [Figure 7] 13 is a perspective view illustrating an inner housing in a relay connector device according to a comparative example. FIG. [Figure 8] 10A to 10C are cross-sectional views illustrating the operation of connecting connectors in a relay connector device according to a comparative example. [Figure 9] 1 is a schematic diagram illustrating a related relay connector device. [Figure 10] 1 is a schematic diagram illustrating a related relay connector device. [Figure 11] 1 is a cross-sectional view illustrating a relay connector device according to a first embodiment. [Figure 12] 1 is a perspective view illustrating a connector in a relay connector device according to a first embodiment. FIG. [Figure 13] 1 is a perspective view illustrating a connector in a relay connector device according to a first embodiment. FIG. [Figure 14] 1 is an exploded perspective view illustrating each member constituting a connector in a relay connector device according to a first embodiment. FIG. [Figure 15] 2 is a perspective view illustrating an inner housing and an impedance adjusting member in the relay connector device according to the first embodiment. FIG. [Figure 16] 1 is an exploded perspective view illustrating each member constituting a connector in a relay connector device according to a first embodiment. FIG. [Figure 17]2 is a perspective view illustrating an inner housing and an impedance adjusting member in the relay connector device according to the first embodiment. FIG. [Figure 18] 5A to 5C are cross-sectional views illustrating the connecting operation of the connectors in the relay connector device according to the first embodiment. [Figure 19] 4 is a graph illustrating impedance in the relay connector device according to the first embodiment, where the horizontal axis indicates time and the vertical axis indicates impedance. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, a specific configuration of this embodiment will be described with reference to the drawings. The following description shows a preferred embodiment of the present disclosure, and the scope of the present disclosure is not limited to the following embodiment. In the following description, items with the same reference numerals indicate substantially the same contents. Some reference numerals and hatching are omitted to avoid cluttering the drawings.

[0018] A coaxial cable connector according to an embodiment will be described. In the following, a relay connector device that relays a cable will be described as an example of the coaxial cable connector according to the embodiment. The coaxial cable connector according to the embodiment is not limited to a relay connector device, and may include other connector devices such as a coaxial connector device that fits a cable to a board, so long as it connects a coaxial cable. Before describing the relay connector device according to the first embodiment, a relay connector device according to a comparative example will be described for comparison. This will make the features of the relay connector device according to the first embodiment clearer.

[0019] <Comparative Example> A relay connector device according to a comparative example will be described. FIG. 1 is a cross-sectional view illustrating a relay connector device 10 according to the comparative example. FIG. 2 is a perspective view illustrating a connector 100 in the relay connector device 10 according to the comparative example. FIG. 3 is a perspective view illustrating a connector 200 in the relay connector device 10 according to the comparative example. An external housing is omitted in FIGS. 1 to 3. Note that the relay connector device 10 may be used separately from the external housing.

[0020] As shown in Figs. 1 to 3, the relay connector device 10 according to the comparative example includes a connector 100 and a connector 200. The connector 100 is, for example, a male connector, and the connector 200 is, for example, a female connector. The connector 100 is connected to an end of a cable 190. The connector 200 is connected to an end of a cable 290. The connector 100 is connected to the connector 200. In this way, the relay connector device 10 relays the cables 190 and 290.

[0021] Here, for the convenience of explaining the relay connector device 10 and the relay connector device 30 described later, an XYZ Cartesian coordinate system is introduced. For example, the axial direction of the relay connector device 10 and the like that is coaxial is defined as the X-axis direction. When the connectors 100 and 200 are connected, the direction in which the male connector 100 faces the female connector 200 is defined as the +X-axis direction. The two directions perpendicular to the X-axis are defined as the Y-axis direction and the Z-axis direction.

[0022] <Male connector> The male connector 100 will be described. Fig. 4 is an exploded perspective view illustrating each member constituting the connector 100 in the relay connector device 10 according to the comparative example. Fig. 5 is a perspective view illustrating the inner housing 130 in the relay connector device 10 according to the comparative example. As shown in Figs. 1-2 and 4-5, the connector 100 includes a GND shell 110, a GND shell 120, an inner housing 130, a contact 140, a sleeve 150, and an outer housing 180. Each member will be described below.

[0023] <GNDシェル> The GND shell 110 and the GND shell 120 include a conductor as a material. The GND shell 110 and the GND shell 120 include, for example, a metal as a material. Note that the GND shell 110 and the GND shell 120 may include a material other than a metal as long as the material includes a conductor. The GND shell 110 and the GND shell 120 are electrically connected to a ground potential.

[0024] The GND shell 110 and the GND shell 120 have a tubular shape. The GND shell 110 and the GND shell 120 have, for example, a cylindrical shape. The GND shell 110 and the GND shell 120 are arranged so that their central axes are in the X-axis direction. The GND shell 110 and the GND shell 120 have the same central axis. The GND shell 110 is arranged on the +X-axis direction side of the GND shell 120. The GND shell 110 may partially overlap with the GND shell 120. For example, the portion of the GND shell 110 on the -X-axis direction side overlaps with the portion of the GND shell 120 on the +X-axis direction side. The GND shell 110 and the GND shell 120 are integrated to form a cylindrical shape.

[0025] The inner housing 130 and the contacts 140 are disposed inside the GND shell 110 and the GND shell 120. The sleeve 150 and a part of the cable 190 may be disposed inside the GND shell 120. The inner housing 130 may be press-fitted into the GND shell 110.

[0026] The end of the GND shell 110 on the +X-axis direction side is disposed near the end of the internal housing 130 on the +X-axis direction side. The end of the GND shell 110 on the +X-axis direction side may coincide with the end of the internal housing 130 on the +X-axis direction side at a position on the X-axis. The end of the GND shell 120 on the -X-axis direction side is located on the outer cover 194 of the cable 190. The end of the GND shell 120 on the -X-axis direction side is located near the end of the sleeve 150 on the -X-axis direction side. For example, the end of the GND shell 120 on the -X-axis direction side may coincide with the end of the sleeve 150 on the -X-axis direction side at a position on the X-axis.

[0027] <Inner housing> The inner housing 130 includes an insulating material as a material. The inner housing 130 is also called an insulator. The inner housing 130 includes, for example, a resin as a material. Note that the inner housing 130 may include a material other than a resin as long as it includes an insulating material.

[0028] The internal housing 130 has a tubular shape. The internal housing 130 has, for example, a cylindrical shape. The central axis of the internal housing 130 is arranged to be in the X-axis direction. The internal housing 130 is arranged inside the GND shell 110. The contacts 140 are arranged inside the internal housing 130. Thus, the internal housing 130 supports the contacts 140. The contacts 140 arranged inside the internal housing 130 may be press-fitted into the internal housing 130.

[0029] A recess 131 is formed in an end face on the +X axis direction side of the inner housing 130. An end of the contact 140 on the +X axis direction side protrudes from a bottom surface of the recess 131. One end of the contact 140 on the +X axis direction side includes a protrusion 141. A side wall of the recess 131 of the inner housing 130 surrounds the end of the contact 140 on the +X axis direction side.

[0030] An end portion of the inner housing 130 on the -X axis direction side is located near an end portion of the contact 140 on the -X axis direction side. For example, the end portion of the inner housing 130 on the -X axis direction side may coincide with the other end of the contact 140 on the -X axis direction side in position on the X axis. A core wire 191 of the cable 190 is connected to the end portion of the contact 140 on the -X axis direction side. A connection portion between the contact 140 and the core wire 191 of the cable 190 may be disposed inside the inner housing 130.

[0031] <Contact> The contact 140 includes a conductor as a material. The contact 140 includes, for example, a metal as a material. Note that the contact 140 may include a material other than a metal as long as it includes a conductor. The contact 140 functions as, for example, a transmission path that transmits a high-frequency signal.

[0032] The contact 140 has a rod-like shape. The contact 140 is disposed so that its central axis is in the X-axis direction. The contact 140 includes a protrusion 141 at one end on the +X-axis direction side. The contact 140 is disposed inside the inner housing 130. The other end of the contact 140 on the -X-axis direction side is connected to a core wire 191 of the cable 190. The protrusion 141 at one end of the contact 140 on the +X-axis direction side is connected to a contact 240 of the female connector 200. The protrusion 141 of the contact 140 is convex so as to fit into the recess 241 of the contact 240.

[0033] <Sleeve> The sleeve 150 includes a conductor as a material. The sleeve 150 includes, for example, a metal as a material. Note that the sleeve 150 may include a material other than a metal as long as the material includes a conductor.

[0034] The sleeve 150 has a tubular shape. The sleeve 150 has, for example, a cylindrical shape. The sleeve 150 is disposed so that the central axis is in the X-axis direction. The sleeve 150 includes a cylindrical first portion 151 and a cylindrical second portion 152. The first portion 151 and the second portion 152 are connected in parallel in the X-axis direction. The first portion 151 is disposed on the +X-axis direction side of the second portion 152. The outer diameter of the first portion 151 is smaller than the outer diameter of the second portion 152. The inner diameter of the first portion 151 is smaller than the inner diameter of the second portion 152.

[0035] The first portion 151 is disposed inside the GND shell 120. The first portion 151 covers the shield member 163 exposed from an end portion of the outer cover 194 of the cable 190. The second portion 152 covers the outer cover 194 of the cable 190. A connection portion between the first portion 151 and the second portion 152 is located near an end portion of the outer cover 194 on the +X-axis direction side.

[0036] <External housing> The outer housing 180 includes an insulator as a material. The outer housing 180 includes, for example, a resin as a material. Note that the outer housing 180 may include a material other than a resin as long as it includes an insulator.

[0037] The external housing 180 has a cylindrical shape. The external housing 180 has, for example, a rectangular cylindrical shape. The central axis of the external housing 180 is arranged to be aligned with the X-axis direction. The external housing 180 has an assembly of the GND shell 110, the GND shell 120, the internal housing 130, the contact 140, and the sleeve 150 attached thereto.

[0038] <Cable> The configuration of the cable 190 will be described below. The cable 190 has a shape that extends in one direction and is flexible. The cable 190 includes a core wire 191, a covering member 192, a shielding member 193, and an outer cover 194. The core wire 191, the covering member 192, the shielding member 193, and the outer cover 194 are arranged in concentric layers. The respective members are stacked concentrically with the core wire 191 at the center. When the cable 190 is extended in the X-axis direction, the respective members are stacked concentrically with the central axis in the X-axis direction. The covering member 192 covers the side surface of the core wire 191. The shielding member 193 covers the side surface of the covering member 192. The outer cover 194 covers the side surface of the shielding member 193.

[0039] Core wire 191 includes a conductor as a material. Core wire 191 has a linear shape. For example, core wire 191 may include a copper wire. Note that core wire 191 may include a material other than a copper wire as long as it includes a linear conductor. A portion of core wire 191 on the +X-axis direction side protrudes from an end portion of coating member 192 on the +X-axis direction side.

[0040] The covering member 192 includes an insulator as a material. The covering member 192 includes, for example, a resin. The covering member 192 may include a material other than resin as long as it includes an insulator. The covering member 192 has a tube-like shape. The covering member 192 has a portion that covers the side surface of the core wire 191. An end portion of the covering member 192 on the +X-axis direction side may be a cut surface. The portion of the covering member 192 on the +X-axis direction side may be exposed from an end portion of the shield member 193 on the +X-axis direction side.

[0041] The shield member 193 includes a conductor as a material. The shield member 193 may include, for example, a metal. The shield member 193 may include a material other than a metal as long as it includes a conductor. The shield member 193 has a tube-like shape. The shield member 193 has a portion that covers the side surface of the covering member 192. An end portion on the +X-axis direction side of the shield member 193 is folded back to the -X-axis direction side. Specifically, for example, the end portion on the +X-axis direction side of the shield member 193 is folded back to the -X-axis direction side along an edge on the +X-axis direction side of the first portion 151 of the sleeve 150. The folded back end portion on the +X-axis direction side of the shield member 193 is connected to the inner surface of the GND shell 120. Therefore, the shield member 193 is electrically connected to the ground potential. The portion on the +X-axis direction side of the shield member 193 may be exposed from the end portion on the +X-axis direction side of the outer cover 194.

[0042] The outer cover 194 includes an insulator as a material. The outer cover 194 may include, for example, a resin. The outer cover 194 may include a material other than resin as long as it includes an insulator. The outer cover 194 has a tube-like shape. The outer cover 194 has a portion that covers the side surface of the shield member 193. An end portion of the outer cover 194 on the +X-axis direction side may be a cut surface. The portion of the outer cover 194 on the +X-axis direction side may be covered by at least one of the sleeve 150 and the GND shell 120.

[0043] <Female connector> Next, the female connector 200 will be described. Fig. 6 is an exploded perspective view illustrating each member constituting the connector 200 in the relay connector device 10 according to the comparative example. Fig. 7 is a perspective view illustrating the inner housing 230 in the relay connector device 10 according to the comparative example. As shown in Figs. 1, 3, 6 to 7, the connector 200 includes a GND shell 210, a GND shell 220, an inner housing 230, a contact 240, a sleeve 250, and an outer housing 280.

[0044] In the case of the connector 100, the cable 190 is located on the −X-axis direction side of the connector 100, whereas in the case of the connector 200, the cable 290 is located on the +X-axis direction side of the connector 200. Other than this, the basic configurations and functions of the GND shell 210, the GND shell 220, the inner housing 230, the contacts 240, the sleeve 250, and the outer housing 280 of the connector 200 are similar to the configurations and functions of the GND shell 110, the GND shell 120, the inner housing 130, the contacts 140, the sleeve 150, and the outer housing 180 of the connector 100, respectively.

[0045] <GNDシェル> The GND shell 210 is disposed on the -X-axis direction side of the GND shell 220. An internal housing 230 and a contact 240 are disposed inside the GND shell 210 and the GND shell 220. A sleeve 250 and a cable 290 may be disposed inside the GND shell 220. The internal housing 230 may be press-fitted into the GND shell 210.

[0046] The end of the GND shell 210 on the -X axis direction side is disposed near the end of the internal housing 230 on the -X axis direction side. The end of the GND shell 210 on the -X axis direction side may coincide with the end of the internal housing 230 on the -X axis direction side at a position on the X axis. The end of the GND shell 220 on the +X axis direction side is located on the outer cover 294 of the cable 290. The end of the GND shell 220 on the +X axis direction side is located near the end of the sleeve 250 on the +X axis direction side. For example, the end of the GND shell 220 on the +X axis direction side may coincide with the end of the sleeve 250 on the +X axis direction at a position on the X axis.

[0047] <Inner housing> The internal housing 230 is disposed inside the GND shell 210. The contacts 240 are disposed inside the internal housing 230. Thus, the contacts 240 are disposed inside the GND shell 210. The internal housing 230 supports the contacts 240.

[0048] The inner housing 230 includes a first portion 231 and a second portion 232. The first portion 231 is disposed on the -X-axis direction side of the second portion 232. The first portion 231 and the second portion 232 are cylindrical with the central axis of the inner housing 230 as the central axis. The outer diameter of the first portion 231 is smaller than the outer diameter of the second portion 232. The first portion 231 fits into a recess 131 in the inner housing 130 of the connector 100. When the first portion 231 fits into the recess 131, the protrusion 141 in the contact 140 of the connector 100 fits into the recess 241 in the contact 240 of the connector 200.

[0049] An end portion on the -X axis direction side of the internal housing 230 forms an end face on the -X axis direction side of the first portion 231. The end portion on the -X axis direction side of the internal housing 230 is located near the end portion on the -X axis direction side of the GND shell 210. For example, the end portion on the -X axis direction side of the internal housing 230 may coincide with the position on the X axis of the end portion on the -X axis direction side of the GND shell 210. A recess 241 on the -X axis direction side of the contact 240 is disposed inside the first portion 231.

[0050] An end portion on the +X axis direction side of the internal housing 230 is located near an end portion on the +X axis direction side of the contact 240. For example, the end portion on the +X axis direction side of the internal housing 230 may coincide with the other end of the contact 240 on the +X axis direction side in position on the X axis. A core wire 291 of a cable 290 is connected to the end portion on the +X axis direction side of the contact 240. A connection portion between the contact 240 and the core wire 291 of the cable 290 may be disposed inside the internal housing 230.

[0051] <Contact> The contact 240 includes a recess 241 at one end on the -X axis direction side. The contact 240 is disposed inside the inner housing 230. An end of the contact 240 on the +X axis direction side is connected to a core wire 291 of the cable 260. The protrusion 141 of the contact 140 fits into the recess 241 of the contact 240.

[0052] <Sleeve> The sleeve 250 includes a cylindrical first portion 251 and a cylindrical second portion 252. The first portion 251 is disposed on the -X axis direction side of the second portion 252. The outer diameter of the first portion 251 is smaller than the outer diameter of the second portion 252. The inner diameter of the first portion 251 is smaller than the inner diameter of the second portion 252.

[0053] The first portion 251 is disposed inside the GND shell 220. The first portion 251 covers the shield member 263 exposed from an end of the outer cover 294 of the cable 290. The second portion 252 covers the outer cover 294 of the cable 290. Therefore, the connection portion between the first portion 251 and the second portion 252 is located near the end of the outer cover 294.

[0054] <Cable> Cable 290 includes a core wire 291, a covering member 292, a shielding member 293, and an outer cover 294. The configurations and functions of core wire 291, covering member 292, shielding member 293, and outer cover 294 in cable 290 are similar to the configurations and functions of core wire 191, covering member 192, shielding member 193, and outer cover 194 in cable 190, respectively. However, the direction in which core wire 291 is connected to contact 240, the direction of the end face having the cut surface of covering member 292, the direction of the end and the folding back direction of shielding member 293, and the direction of the end face of outer cover 294, etc. are opposite to those of cable 190.

[0055] Next, the connection operation of the relay connector device 10 of the comparative example will be described. FIG. 8 is a cross-sectional view illustrating the connection operation of the connectors 100 and 200 in the relay connector device according to the comparative example. As shown in FIG. 1 and FIG. 8, in the relay connector device 10 of the comparative example, the connector 100 and the connector 200 face each other. Then, the convex portion 141 of the contact 140 is fitted into the concave portion 241 of the contact 240. As a result, a transmission path of a high-frequency signal is formed between the contact 140 and the contact 240. At that time, the first part 231 of the inner housing 230 may be fitted into the concave portion 131 of the inner housing 130. Also, the GND shell 110 and the GND shell 210 come into contact with each other. As a result, a shield covering the transmission path of the high-frequency signal is formed.

[0056] <Issues in Comparative Examples> In the relay connector device 10, in a region from a connection portion between the other end of the contact 140 on the -X-axis direction side and the end of the core wire 191 on the +X-axis direction side to an end of the covering member 192 of the cable 190 on the +X-axis direction side, a space layer 195 is formed between the core wire 191 and the GND shells 110 and 120. Specifically, the space layer 195 is formed between an exposed portion of the core wire 191 connected to the contact 140 that is exposed from the inner housing 130 and the covering member 192, and the GND shells 110 and 120.

[0057] In addition, in the region from the connection portion between the other end of the contact 240 on the +X-axis direction side and the end portion of the core wire 291 on the -X-axis direction side to the end portion of the covering member 292 of the cable 290 on the -X-axis direction side, a space layer 295 is formed between the core wire 291 and the GND shells 210 and 220. Specifically, the space layer 295 is formed between the exposed portion of the core wire 291 connected to the contact 261 that is exposed from the inner housing 230 and the covering member 292, and the GND shells 210 and 220.

[0058] In this way, the space layers 195 and 295 containing air are formed around the connection parts of the contacts 140 and 240. When such space layers 195 and 295 exist, the impedance of the relay connector device 10 increases. Therefore, it becomes difficult to improve the matching with the designed impedance. Therefore, in order to reduce the impedance in the vicinity of the space layers 195 and 295, for example, it is conceivable to deform the GND shells 120 and 220 to bring them closer to the core wires 191 and 291.

[0059] 9 and 10 are schematic diagrams illustrating a related relay connector device 20. As shown in FIG. 9, in the related relay connector device 20, a part of the cross section of the GND shell 21 is made concave. This allows the GND shell 21 to be brought closer to the core 22. This allows the impedance matching to be improved. However, as shown in FIG. 10, if the GND shell 21 is made concave, when the internal insulator 23 is inserted into the GND shell 21 to be assembled, the internal insulator 23 and the concave shape of the GND shell 21 come into contact with each other, making it difficult to assemble the relay connector device 20. The core 22 arranged between the internal insulator 23 and the cable 29 cannot be brought closer to the GND shell 21. Therefore, the related relay connector device 20 cannot improve impedance matching.

[0060] <Embodiment 1> Next, a relay connector device 30 according to the first embodiment will be described. In this embodiment, the GND shell 110 and the like are not brought close to the core wires 191 and 291 in order to reduce the impedance of the core wires 191 and 291 near the space layers 195 and 295. Instead, in this embodiment, impedance adjustment members are incorporated into the inner housings 130 and 230. This adjusts the impedance of the relay connector device.

[0061] Fig. 11 is a cross-sectional view illustrating the relay connector device 30 according to the first embodiment. Fig. 12 is a perspective view illustrating a connector 300 in the relay connector device 30 according to the first embodiment. Fig. 13 is a perspective view illustrating a connector 400 in the relay connector device 30 according to the first embodiment. In Figs. 11 to 13, the external housing is omitted. Note that the relay connector device 30 may be used separately from the external housing.

[0062] As shown in Figs. 11 to 13, the relay connector device 30 according to this embodiment includes a connector 300 and a connector 400. The connector 300 is, for example, a male connector, and the connector 400 is, for example, a female connector. The connector 300 is connected to an end of a cable 390. The connector 400 is connected to an end of a cable 490. The connector 300 is connected to the connector 400. In this way, the relay connector device 30 relays the cables 390 and 490.

[0063] <Male connector> FIG. 14 is an exploded perspective view illustrating each member constituting the connector 300 in the relay connector device 30 according to the first embodiment. FIG. 15 is a perspective view illustrating the inner housing 330 and the impedance adjustment member 360 in the relay connector device 30 according to the first embodiment. In FIG. 15, the inner housing 330 is seen through. As shown in FIGS. 11 to 12 and 14 to 15, the connector 300 includes a GND shell 310, an inner housing 330, a contact 340, a sleeve 350, an impedance adjustment member 360, an EMI shell 370, and an outer housing 380. The basic configurations and functions of the GND shell 310, the inner housing 330, the contact 340, the sleeve 350, and the outer housing 380 in the connector 300 are similar to the configurations and functions of the GND shells 110 and 120, the inner housing 130, the contact 140, the sleeve 150, and the outer housing 180 in the connector 100.

[0064] <GNDシェル> The GND shell 310 corresponds to an integrated configuration of the GND shells 110 and 120 in the connector 100. An inner housing 330, a contact 340, and an impedance adjustment member 360 are disposed inside the GND shell 310. A sleeve 350 and a part of a cable 390 are also disposed inside the GND shell 310. The inner housing 330 may be press-fitted into the GND shell 310.

[0065] An end portion on the +X-axis direction side of the GND shell 310 is disposed near an end portion on the +X-axis direction side of the internal housing 330. On the other hand, an end portion on the -X-axis direction side of the GND shell 310 is located on the outer cover 394 of the cable 390. The end portion on the -X-axis direction side of the GND shell 310 may coincide with the end portion on the -X-axis direction side of the sleeve 350 in position on the X-axis.

[0066] <Inner housing> 15, the internal housing 330 incorporates a portion of the impedance adjustment member 360. For example, the portion of the internal housing 330 on the -X axis direction side incorporates the portion of the impedance adjustment member 360 on the +X axis direction side.

[0067] The internal housing 330 is disposed inside the GND shell 310. The contacts 340 are disposed inside the internal housing 330. The internal housing 330 supports the contacts 340. A recess 331 is formed in an end face on the +X axis direction side of the internal housing 330. One end of the contacts 340 on the +X axis direction side protrudes from a bottom surface of the recess 331. One end of the contacts 340 on the +X axis direction side includes a protrusion 341. A side wall of the recess 331 of the internal housing 330 surrounds the protrusion 341 on the +X axis direction side of the contacts 340.

[0068] An end portion on the -X axis direction side of the internal housing 330 is located near an end portion on the -X axis direction side of the contact 340. For example, the end portion on the -X axis direction side of the internal housing 330 may coincide with the other end of the end portion on the -X axis direction side of the contact 340 at a position on the X axis. A core wire 391 of a cable 390 is connected to the end portion on the -X axis direction side of the contact 340. A connection portion between the contact 340 and the core wire 391 may be disposed inside the internal housing 330.

[0069] <Contact> The contact 340 includes a protrusion 341 at one end on the +X axis direction side. One end of the contact 340 on the +X axis direction side is connected to a contact 440 of the female connector 400. The protrusion 341 on the +X axis direction side of the contact 340 is convex so as to fit into the contact 440. The other end of the contact 340 on the -X axis direction side is connected to a core wire 391 of the cable 390.

[0070] <Sleeve> The sleeve 350 includes a cylindrical first portion 351 and a cylindrical second portion 352. The first portion 351 is disposed inside the GND shell 310. The first portion 351 covers the shielding member 393 exposed from an end of an outer cover 394 of the cable 390. The second portion 352 covers the outer cover 394 of the cable 390. Thus, the connection portion between the first portion 351 and the second portion 352 is located near the end of the outer cover 394.

[0071] <Impedance adjustment material> 15, the impedance adjustment member 360 has a portion incorporated in the internal housing 330. Specifically, for example, a portion on the +X axis direction side of the impedance adjustment member 360 is incorporated in a portion on the -X axis direction side of the internal housing 330. The impedance adjustment member 360 may be incorporated in the internal housing 330 by insert molding. Alternatively, the impedance adjustment member 360 may be incorporated in the internal housing 330 by being press-fitted into the internal housing 330.

[0072] The impedance adjustment member 360 includes a conductor. The impedance adjustment member 360 includes, for example, a metal as a material. The impedance adjustment member 360 may include a material other than a metal as long as it includes a conductor. The impedance adjustment member 360 may be electrically disconnected from the contact 340 and the core wire 391, which are the transmission path of the high-frequency signal line, and may be electrically disconnected from the ground potential. In other words, the impedance adjustment member 360 may be at a hollow ground potential that is not directly connected to other conductors. This makes it possible to reduce the impedance near the air-containing space layer 395 in the relay connector device 30 and improve impedance matching while eliminating the need for a circuit that connects the impedance adjustment member 360 to other conductors.

[0073] The impedance adjustment member 360 may be electrically connected to the ground potential. For example, the impedance adjustment member 360 may be electrically set to the ground potential by being connected to the GND shell 310. This can reduce the impedance in the vicinity of the spatial layer 395 containing air in the relay connector device 30, and improve impedance matching.

[0074] The impedance adjustment member 360 has a tubular shape. The impedance adjustment member 360 has, for example, a cylindrical shape. The impedance adjustment member 360 is disposed so that the central axis is in the X-axis direction. Thus, the impedance adjustment member 360 has a tubular shape with the central axis positioned in the contact 340 and the core 391 of the cable 390.

[0075] As long as the impedance adjustment member 360 has a cylindrical shape, it may have a square cylindrical shape or a square cylindrical shape with rounded corners. It may also have a cylindrical shape in which a plurality of members are joined together into a cylindrical shape, or the cylindrical shape may have a notch in part. The impedance adjustment member 360 surrounds the contact 340 and the core wire 391 around the central axis, thereby adjusting the impedance and improving impedance matching.

[0076] The impedance adjustment member 360 is disposed inside the GND shell 310 together with the internal housing 330 and the contacts 340. An end of the impedance adjustment member 360 on the +X-axis direction side is located inside the internal housing 330. An end of the impedance adjustment member 360 on the -X-axis direction side is located on the covering member 392 of the cable 390. An end of the covering member 392 of the cable 390 on the +X-axis direction side is a cut surface. Thus, the impedance adjustment member 360 covers the end of the covering member 392. This allows the impedance adjustment member 360 to cover the exposed portion of the core wire 391.

[0077] In this way, the impedance adjusting member 360 covers the exposed portion of the core wire 391 connected to the contact 340 that is exposed from the internal housing 330. A space layer 395 is formed between the exposed portion of the core wire 391 connected to the contact 340 that is exposed from the internal housing 330 and the GND shell 310. The impedance adjusting member 360 is disposed in the space layer 395 formed between such an exposed portion and the GND shell 310.

[0078] <EMIシェル> The EMI shell 370 includes a conductor. The EMI shell 370 includes, for example, a metal as a material. Note that the EMI shell 370 may include a material other than a metal as long as it includes a conductor. The EMI shell 370 has a semi-cylindrical shape. The EMI shell 370 contacts the GND shell 310 and covers a part of the GND shell 310. For example, the EMI shell 370 covers an opening of the GND shell 310.

[0079] <External housing> The outer housing 380 has an assembly of the GND shell 310, the inner housing 330, the contacts 340, the sleeve 350, the impedance adjustment member 360 and the EMI shell 370 attached thereto.

[0080] <Cable> Cable 390 includes a core wire 391, a covering member 392, a shielding member 393, and an outer cover 394. The configurations and functions of core wire 391, covering member 392, shielding member 393, and outer cover 394 in cable 390 are similar to the configurations and functions of core wire 191, covering member 192, shielding member 193, and outer cover 194 in cable 190, respectively.

[0081] <Female connector> Next, the female connector 400 will be described. Fig. 16 is an exploded perspective view illustrating each member constituting the connector 400 in the relay connector device 30 according to the first embodiment. Fig. 17 is a perspective view illustrating the inner housing 430 and the impedance adjustment member 460 in the relay connector device 30 according to the first embodiment. In Fig. 17, the inner housing 430 is seen through. As shown in Figs. 11, 13, 16 to 17, the connector 400 includes a GND shell 410, an inner housing 430, a contact 440, a sleeve 450, an impedance adjustment member 460, an EMI shell 470, and an outer housing 480.

[0082] In the case of connector 300, cable 390 is located on the −X-axis direction side of connector 300, whereas in the case of connector 400, cable 490 is located on the +X-axis direction side of connector 400. Other than this, basic configurations and functions of GND shell 410, inner housing 430, contacts 440, sleeve 450, impedance adjustment member 460, EMI shell 470, and outer housing 480 of connector 400 are similar to the configurations and functions of GND shell 310, inner housing 330, contacts 340, sleeve 350, impedance adjustment member 360, EMI shell 370, and outer housing 380 of connector 300, respectively.

[0083] <GNDシェル> An inner housing 430, a contact 440, and an impedance adjusting member 460 are disposed inside the GND shell 410. A sleeve 450 and a part of a cable 490 are also disposed inside the GND shell 410. The inner housing 430 may be press-fitted into the GND shell 410.

[0084] An end portion on the -X axis direction side of the GND shell 410 is disposed near an end portion on the -X axis direction side of the internal housing 430. On the other hand, an end portion on the +X axis direction side of the GND shell 410 is located on the outer cover 494 of the cable 490. The end portion on the +X axis direction side of the GND shell 410 may coincide with the end portion on the +X axis direction side of the sleeve 450 in position on the X axis.

[0085] <Inner housing> 17, for example, a portion on the +X-axis direction side of the internal housing 430 incorporates a portion on the -X-axis direction side of the impedance adjustment member 460. The internal housing 430 is disposed inside the GND shell 410. The contact 440 is disposed inside the internal housing 430. Thus, the internal housing 430 supports the contact 440.

[0086] The inner housing 430 includes a first portion 431 and a second portion 432. The first portion 431 is disposed on the -X-axis direction side of the second portion 432. The first portion 431 and the second portion 432 are cylindrical with the central axis of the inner housing 430 as the central axis. The outer diameter of the first portion 431 is smaller than the outer diameter of the second portion 432. The first portion 431 fits into a recess 331 in the inner housing 330 of the connector 300. When the first portion 431 fits into the recess 331, the protrusion 341 in the contact 340 of the connector 300 fits into the recess 441 in the contact 440 of the connector 400.

[0087] An end portion on the -X axis direction side of the internal housing 430 forms an end face on the -X axis direction side of the first portion 431. The end portion on the -X axis direction side of the internal housing 430 is located near the end portion on the -X axis direction side of the GND shell 410. For example, the end portion on the -X axis direction side of the internal housing 430 may coincide with the position on the X axis of the end portion on the -X axis direction side of the GND shell 410. A recess 441 on the -X axis direction side of the contact 440 is disposed inside the first portion 431.

[0088] An end portion of the internal housing 430 on the +X axis direction side is located near an end portion of the contact 440 on the +X axis direction side. For example, the end portion of the internal housing 430 on the +X axis direction side may coincide with the other end of the contact 440 on the +X axis direction side in position on the X axis. A core wire 491 of a cable 490 is connected to the end portion of the contact 440 on the +X axis direction side. A connection portion between the contact 440 and the core wire 491 of the cable 490 may be disposed inside the internal housing 430.

[0089] <Contact> The contact 440 includes a recess 441 at one end on the -X axis direction side. The contact 440 is disposed inside the inner housing 430. An end of the contact 440 on the +X axis direction side is connected to a core wire 491 of a cable 490. The protrusion 341 of the contact 340 in the male connector 300 fits into the recess 441 of the contact 440 in the female connector 400.

[0090] <Sleeve> The sleeve 450 includes a cylindrical first portion 451 and a cylindrical second portion 452. The first portion 451 is disposed on the -X axis direction side of the second portion 452. The outer diameter of the first portion 451 is smaller than the outer diameter of the second portion 452. The inner diameter of the first portion 451 is smaller than the inner diameter of the second portion 452.

[0091] The first portion 451 is disposed inside the GND shell 410. The first portion 451 covers the shield member 463 exposed from an end of the outer cover 494 of the cable 490. The second portion 452 covers the outer cover 494 of the cable 490. Therefore, the connection portion between the first portion 451 and the second portion 452 is located near the end of the outer cover 494.

[0092] <Impedance adjustment material> 17, the impedance adjustment member 460 has a portion incorporated in the inner housing 430. Specifically, for example, a portion on the −X-axis direction side of the impedance adjustment member 460 is incorporated in a portion on the +X-axis direction side of the inner housing 430.

[0093] The impedance adjustment member 460 is disposed inside the GND shell 410 together with the internal housing 430 and the contacts 440. An end portion of the impedance adjustment member 460 on the -X-axis direction side is located inside the internal housing 430. An end portion of the impedance adjustment member 460 on the +X-axis direction side is located on the covering member 492 of the cable 490. An end portion of the covering member 492 of the cable 490 on the -X-axis direction side is a cut surface. Thus, the impedance adjustment member 460 covers the end portion of the covering member 492.

[0094] The impedance adjusting member 460 covers an exposed portion of the core wire 491 connected to the contact 440 that is exposed from the internal housing 430. A space layer 495 is formed between the exposed portion of the core wire 491 connected to the contact 440 that is exposed from the internal housing 430 and the GND shell 410. The impedance adjusting member 460 is disposed in the space layer 495 formed between such an exposed portion and the GND shell 410.

[0095] <EMIシェル> The EMI shell 470 is in contact with the GND shell 410 and covers a part of the GND shell 410. For example, the EMI shell 470 covers an opening of the GND shell 410.

[0096] <External housing> The outer housing 480 has an assembly of the GND shell 410, the inner housing 430, the contacts 440, the sleeve 450, the impedance adjusting member 460 and the EMI shell 470 attached thereto.

[0097] <Cable> Cable 490 includes a core wire 491, a covering member 492, a shielding member 493, and an outer cover 494. The configurations and functions of core wire 491, covering member 492, shielding member 493, and outer cover 494 in cable 490 are similar to the configurations and functions of core wire 391, covering member 392, shielding member 393, and outer cover 394 in cable 390. However, the direction in which core wire 491 is connected to contact 440, the direction of the end face having the cut surface of covering member 492, the direction of the end and the folding back direction of shielding member 493, and the direction of the end face of outer cover 494, etc. are opposite to those of cable 390.

[0098] Next, the connection operation of the relay connector device 30 of this embodiment will be described. FIG. 18 is a cross-sectional view illustrating the connection operation of the connectors 300 and 400 in the relay connector device 30 according to the first embodiment. As shown in FIG. 11 and FIG. 18, in the relay connector device 30 of this embodiment, the connector 300 and the connector 400 face each other. Then, the convex portion 341 of the contact 340 is fitted into the concave portion 441 of the contact 440. As a result, a transmission path of a high-frequency signal is formed between the contact 340 and the contact 440. At that time, the first part 431 of the inner housing 430 may be fitted into the concave portion 331 of the inner housing 330. Also, the GND shell 310 and the GND shell 410 come into contact with each other. As a result, a shield covering the transmission path of a high-frequency signal is formed.

[0099] The impedance adjusting member 360 surrounds the inner housing 330 and the core wire 391 exposed from the covering member 392 so as to surround it with a space layer 395. Furthermore, the impedance adjusting member 460 surrounds the inner housing 430 and the core wire 491 exposed from the covering member 492 so as to surround it with a space layer 495.

[0100] Next, the effects of this embodiment will be described. The relay connector device 30 of this embodiment includes impedance adjustment members 360 and 460. The impedance adjustment member 360 covers the exposed portion of the core wire 391 connected to the contact 340 that is exposed from the internal housing 330. Therefore, the impedance adjustment member 360 can adjust the impedance of the relay connector device 30 and improve impedance matching. In the following, the effects of the impedance adjustment member 460 are similar to those of the impedance adjustment member 360, so a description thereof will be omitted.

[0101] Fig. 19 is a graph illustrating impedance in the relay connector device 30 according to embodiment 1, where the horizontal axis indicates time and the vertical axis indicates impedance. Fig. 19 also shows the impedance of the relay connector device 10 of the comparative example. As shown in Fig. 19, the impedance of the relay connector device 30 of this embodiment is improved by being lower than the impedance of the relay connector device 10 of the comparative example.

[0102] Furthermore, the impedance adjusting member 360 is incorporated into the internal housing 330. This makes it possible to fix the size and shape of the impedance adjusting member 360, thereby improving the stability of the impedance.

[0103] Furthermore, the impedance adjusting member 360 in the relay connector device 30 of this embodiment is disposed in a space layer 395 formed between the exposed portion of the core wire 391 and the GND shell 410. This makes it possible to suppress an increase in impedance in the core wire 391 of the cable 390 exposed to the space layer 395 containing air. This further improves impedance matching.

[0104] The impedance adjusting member 360 has a cylindrical shape with its central axis positioned at the contact 440 and the core wire 491. Therefore, it is possible to isotropically cover the periphery of the contact 440 and the core wire 491, and it is possible to uniformly adjust the impedance.

[0105] The impedance adjustment member 360 may be incorporated into the internal housing 330 by insert molding. This allows the impedance adjustment member 360 to be firmly fixed to the internal housing 330. On the other hand, the impedance adjustment member 360 may be incorporated into the internal housing 330 by being press-fitted into the internal housing 330. This allows the impedance adjustment member 360 to be easily incorporated into the internal housing 330.

[0106] Although the embodiment of the present invention has been described above, the present disclosure includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited to the above-mentioned embodiment. In addition, the configurations in the comparative example and the embodiment may be appropriately combined. [Explanation of symbols]

[0107] 10, 20, 30 Relay connector device 21 GND shell 22 Core Wire 23 Internal insulator 29 Cable 100, 200, 300, 400 Connectors 110, 210, 310, 410 GND shell 120, 220 GND shell 130, 230, 330, 430 Inner Housing 131, 331 recess 140, 240, 340, 440 Contact 141, 341 convex part 150, 250, 350, 450 sleeve 151, 251, 351, 451 Part 1 152, 252, 352, 452 2nd part 180, 280, 380, 480 Outer Housing 190, 290, 390, 490 Cable 191, 291, 391, 491 core wire 192, 292, 392, 492 Covering material 193, 293, 393, 493 Shielding materials 194, 294, 394, 494 Outer cover 195, 295, 395, 495 spatial layer 231, 431 Part 1 232, 432 Part 2 241, 441 recess 360, 460 Impedance adjustment material 370, 470 EMI shell

Claims

1. A coaxial cable connector having a connector for relaying a cable, The connector comprises: a contact including a conductor; an insulator including an insulating body supporting the contact; an impedance adjustment member having a portion incorporated in the insulator and including the conductor; having the impedance adjustment member covers an exposed portion of the core wire of the cable connected to the contact, the exposed portion being exposed from the insulator; Coaxial cable connector.

2. The connector further includes a GND shell including the conductor, the contact, the insulator, and the impedance adjustment member are disposed inside the GND shell, The impedance adjustment member is disposed in a space formed between the exposed portion and the GND shell.

2. The coaxial cable connector according to claim 1.

3. The impedance adjustment member has a cylindrical shape with a central axis located at the contact and the core wire.

3. The coaxial cable connector according to claim 2.

4. The cable includes: The core wire including the conductor; a covering member having a portion covering the core wire and including the insulator; a shield member having a portion covering the covering member and including the conductor; an outer cover having a portion covering the shield member and including the insulator; Including, The impedance adjustment member covers an end of the covering member.

4. The coaxial cable connector according to claim 3.

5. The impedance adjustment member is incorporated into the insulator by insert molding.

2. The coaxial cable connector according to claim 1.

6. the impedance adjustment member is press-fitted into the insulator, thereby being incorporated into the insulator; 2. The coaxial cable connector according to claim 1.

7. The impedance adjustment member is electrically connected to the GND shell.

3. The coaxial cable connector according to claim 2.

8. The impedance adjustment member is electrically disconnected from the GND shell, the contact, and the core wire.

3. The coaxial cable connector according to claim 2.

9. A coaxial cable connector including a first connector and a second connector for relaying a first cable and a second cable, The first connector is a first contact including a conductor and including a protrusion at one end; a first insulator including an insulating body supporting the first contact; a first impedance adjustment member having a portion incorporated in the first insulator and including the conductor; having the first impedance adjustment member covers an exposed portion of a first core of the first cable connected to the other end of the first contact, the exposed portion being exposed from the first insulator; The second connector is a second contact including the conductor and including a recess at one end; a second insulator including the insulator supporting the second contact; a second impedance adjustment member having a portion incorporated in the second insulator and including the conductor; having the second impedance adjustment member covers an exposed portion of a second core of the second cable connected to the other end of the second contact, the exposed portion being exposed from the second insulator; The protrusion of the first contact fits into the recess of the second contact. Coaxial cable connector.

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