Coaxial cable connector

Abstract

The invention provides a coaxial cable connector with an improved EMS (Energy Management System). A relay connector device, which is an example of a coaxial cable connector, includes: a contact including a conductor as a material and extending in an axial direction; an inner housing including an insulator as a material and supporting the contact in such a manner that one end of the contact is exposed; a GND case including the conductor as a material and having a portion at least partially covering the inner case; and an EMI case including the conductor as a material and having a portion covering the gap of the GND case. The EMI housing covers at least any one of the inner housing, the other end of the contact exposed from the inner housing, and the core wire of the cable in the gap.

Description

Technical Field

[0001] The invention relates to a coaxial cable connector. Background Art

[0002] In automotive coaxial connectors, improving high-frequency transmission characteristics is essential from the perspective of performance improvement. For example, in a coaxial cable connector such as a relay connector device that relays cables, if there is a gap in the housing, electromagnetic compatibility (EMC) will decrease, resulting in an increased risk of electromagnetic interference.

[0003] For example, in the relay connector device disclosed in Japanese Unexamined Patent Application Publication No. 2002-190356 (Patent Application No. 2000-389834), a gap is left in the housing for manufacturing components. This gap causes the EMS of the relay connector device to be reduced. Summary of the invention

[0004] The present invention is made to solve the above-mentioned problems, and therefore an object of the present invention is to provide a coaxial cable connector with improved EMS.

[0005] According to one aspect of the present invention, a coaxial cable connector is a coaxial cable connector for connecting cables, the coaxial cable connector comprising: a contact, comprising a conductor as a material, and extending in an axial direction; an insulator body, comprising an insulator as a material, and supporting the contact in a manner in which one end of the contact is exposed; a GND shell, comprising the conductor as a material, and having a portion at least partially covering the insulator body; and an electromagnetic interference (EMI) shell, comprising the conductor as a material, and having a portion covering a gap of the GND shell, wherein the EMI shell covers the insulator body, the contact exposed from the insulator body, and at least any one of the core wires of the cable connected to the other end of the contact in the gap.

[0006] In the above-mentioned coaxial cable connector, the cable may include: the core wire, including the conductor as the material, and connected to the other end of the contact; the covering layer, including the insulator as the material, and having a portion covering the core wire; the shielding layer, including the conductor as the material, and having a portion covering the covering layer; and the outer cover, including the insulator as the material, and having a portion covering the shielding layer, and the EMI shell may cover at least any one of the insulator body, the contact exposed from the insulator body, the covering layer exposed from the shielding layer, and the core wire exposed from the covering layer and connected to the other end of the contact in the gap.

[0007] The above-mentioned coaxial cable connector may further include a sleeve having a portion covering the shielding layer exposed from the outer cover, and the EMI shell may include: a first portion covering the insulator body, with the GND shell interposed therebetween; and a second portion covering the sleeve, with the GND shell interposed therebetween, and the width of the first portion in a specific direction orthogonal to the axial direction may be different from the width of the second portion in the specific direction.

[0008] In the above coaxial cable connector, the GND shell may include a first holding portion, and the EMI shell may include a second holding portion configured to be engaged with the first holding portion.

[0009] In the above coaxial cable connector, the EMI shell may be connected to the GND shell.

[0010] In the above coaxial cable connector, the EMI shell can be connected to the GND shell by laser welding.

[0011] In the above coaxial cable connector, the EMI shell may be connected to the GND shell at an edge close to one end of the EMI shell.

[0012] According to the present invention, a coaxial cable connector with improved EMS is also provided.

[0013] The above and other objects, features and advantages of the present invention will become more fully understood from the detailed description given below and the accompanying drawings, which are given by way of illustration only and thus should not be construed as limiting the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a cross-sectional view showing a relay connector device according to a comparative example;

[0015] Figure 2is a perspective view showing a connector in the relay connector device according to the comparative example;

[0016] Figure 3 is a perspective view showing a connector in the relay connector device according to the comparative example;

[0017] Figure 4 is an exploded perspective view showing the components constituting the connector in the relay connector device according to the comparative example;

[0018] Figure 5 is an exploded perspective view showing the components constituting the connector in the relay connector device according to the comparative example;

[0019] Figure 6 is a cross-sectional view showing a plurality of connector connection operations in the relay connector device according to the comparative example;

[0020] Figure 7 is a perspective view showing the connector in the relay connector device according to the comparative example, showing Figure 3 An enlarged view of part VII in FIG.

[0021] Figure 8 is a cross-sectional view showing a relay connector device according to a first embodiment;

[0022] Fig. 9 is a perspective view showing a connector in the relay connector device according to the first embodiment;

[0023] Fig.10 is a perspective view showing a connector in the relay connector device according to the first embodiment;

[0024] Fig.11 is an exploded perspective view showing the components constituting the connector in the relay connector device according to the first embodiment;

[0025] Fig.12 is an exploded perspective view showing the components constituting the connector in the relay connector device according to the first embodiment;

[0026] Fig.13 is a perspective view showing an EMI shell in the relay connector device according to the first embodiment;

[0027] Fig.14 is a side view showing the connector with the EMI shell removed from the relay connector device according to the first embodiment;

[0028] Fig.15is a perspective view showing the connector with the EMI shell removed from the relay connector device according to the first embodiment;

[0029] Fig.16 is a cross-sectional perspective view showing the connector with the EMI shell removed in the relay connector device according to the first embodiment;

[0030] Fig.17 is a side view showing the connector in the relay connector device according to the first embodiment, wherein the EMI shell is shown as transparent;

[0031] Fig.18 is a cross-sectional view showing the connector in the relay connector device according to the first embodiment, showing Fig.10 XVIII cross section in;

[0032] Fig.19 is a cross-sectional view showing the connector in the relay connector device according to the first embodiment, showing Fig.10 XIX cross section in;

[0033] Fig. 20 is a perspective view showing a connector in the relay connector device according to the first embodiment;

[0034] Fig.21 is a cross-sectional view showing a connector connection operation in the relay connector device according to the first embodiment;

[0035] Fig. 22 is a graph showing a plurality of EMI characteristics in the relay connector device according to the first embodiment, wherein the horizontal axis represents the frequency of a signal and the vertical axis represents the amplitude of a signal;

[0036] Fig.23 is a diagram showing leakage of noise to the outside of the relay connector device according to the comparative example; and

[0037] Fig.24 2 is a view showing leakage of noise to the outside of the relay connector device according to the first embodiment. DETAILED DESCRIPTION

[0038] The specific structure of the present invention will be described below in conjunction with the multiple drawings. The following description only shows the preferred embodiments of the present invention, and the present invention is not limited to the following embodiments. In the following description, the same reference numerals represent substantially the same elements. For the clarity of the multiple drawings, some reference numerals and hatching are omitted.

[0039] The coaxial cable connector according to the present embodiment will be described. In the following, a relay connector device for relaying a cable will be described as an example of the coaxial cable connector according to the present embodiment. It should be noted that the coaxial cable connector according to the present embodiment is not limited to the relay connector device, and it may include other connector devices, such as a coaxial connector device in which a cable is engaged with a circuit board, as long as it is configured to connect 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 multiple features of the relay connector device according to the first embodiment clear. It should be noted that the comparative example is also included in the technical idea of ​​the present embodiment.

[0040] <Comparative Example>

[0041] Next, the relay connector device according to the comparative example will be described. Figure 1 is a cross-sectional view showing a relay connector device 10 according to a comparative example. Figure 2 1 is a perspective view showing the connector 100 in the relay connector device 10 according to the comparative example. Figure 3 2 is a perspective view showing the connector 200 in the relay connector device 10 according to the comparative example. Figures 1 to 3 It should be noted that the relay connector device 10 can be used separately from the external housing.

[0042] like Figures 1 to 3 As shown, the relay connector device 10 according to the comparative example includes the connector 100 and the connector 200. The connector 100 is, for example, a male-side connector 100, and the connector 200 is, for example, a female-side connector 200. The connector 100 is connected to one end of a cable 190. The connector 200 is connected to one end of a cable 290. The connector 100 is connected to the connector 200. The relay connector device 10 thus connects the cable 190 and the cable 290.

[0043] In order to facilitate the description of the relay connector device 10 and the relay connector device 20 described later, the xyz-orthogonal coordinate axis system is adopted. For example, the axial direction coaxial with the relay connector device 10 is called the x-axis direction. When the connector 100 and the connector 200 are connected, the direction of the male connector 100 toward the female connector 200 is called the +x direction. The two directions orthogonal to the x-axis are called the y-axis direction and the z-axis direction.

[0044] <Male connector>

[0045] Next, the male-side connector 100 will be described. Figure 4 is an exploded perspective view showing the components constituting the connector 100 in the relay connector device 10 according to the comparative example. As Figure 1 to Figure 2 and Figure 4 shown, the connector 100 includes a GND case 110, a GND case 120, an inner housing 130, a contact 140, a sleeve 150, and an outer housing 180. Each component will be described below.

[0046] <GND case>

[0047] The GND case 110 and the GND case 120 contain a conductor as a material. For example, the GND case 110 and the GND case 120 contain metal as a material. It should be noted that the GND case 110 and the GND case 120 only need to contain a conductor, and materials other than metal may also be included. The GND case 110 and the GND case 120 are electrically connected to the ground potential.

[0048] The GND case 110 and the GND case 120 are tubular. For example, the GND case 110 and the GND case 120 are cylindrical. The GND case 110 and the GND case 120 are arranged such that their central axes are in the x-axis direction. The central axes of the GND case 110 and the GND case 120 coincide with each other. The GND case 110 is provided on the +x-axis direction side of the GND case 120. The GND case 110 may partially overlap with the GND case 120. For example, a part of the -x-axis direction side of the GND case 110 overlaps with a part of the +x-axis direction side of the GND case 120, and the GND case 110 and the GND case 120 integrally form a cylindrical shape.

[0049] The inner housing 130 and the contact 140 are provided inside the GND case 110 and the GND case 120. A part of the sleeve 150 and the cable 190 may be provided inside the GND case 120. Therefore, the GND case 110 and the GND case 120 have at least a part that locally covers the inner housing 130. The inner housing 130 may be press-fitted inside the GND case 110.

[0050] One end of the GND shell 110 on the +x-axis direction side is arranged to be adjacent to one end of the inner shell 130 on the +x-axis direction side. The position of the end on the x-axis of the GND shell 110 on the +x-axis direction side may coincide with the position of the end on the x-axis of the inner shell 130 on the +x-axis direction side. One end of the GND shell 120 on the -x-axis direction side is located above the outer cover 194 of the cable 190. One end of the GND shell 120 on the -x-axis direction side is arranged to be adjacent to one end of the sleeve 150 on the -x-axis direction side. For example, the position of the end on the x-axis of the GND shell 120 on the -x-axis direction side may coincide with the position of the end on the x-axis of the sleeve 150 on the -x-axis direction side.

[0051] <Inner Shell>

[0052] The inner shell 130 includes an insulator as a material. The inner shell 130 is also referred to as an insulator body. For example, the inner shell 130 includes a resin as a material. It should be noted that the inner shell 130 only needs to include an insulator, and may also include materials other than resin.

[0053] The inner shell 130 is tubular. For example, the inner shell 130 is cylindrical. The inner shell 130 is arranged in a manner that its central axis is located in the x-axis direction. The inner shell 130 is arranged inside the GND shell 110. The contact 140 is arranged inside the inner shell 130. Therefore, the inner shell 130 supports the contact 140. The contact 140 arranged in the inner shell 130 can be press-fitted into the inner shell 130.

[0054] The inner housing 130 has a recess 131 on the end surface on the +x-axis direction side. One end of the contact 140 on the +x-axis direction side protrudes from the bottom surface of the recess 131. One end of the contact 140 on the +x-axis direction side includes a protrusion 141. The side wall of the recess 131 of the inner housing 130 surrounds the end of the contact 140 on the +x-axis direction side.

[0055] One end of the inner housing 130 on the -x-axis side is adjacent to one end of the contact 140 on the -x-axis side. For example, the position of the end on the -x-axis side of the inner housing 130 on the x-axis may coincide with the position of the other end on the -x-axis side of the contact 140 on the x-axis. The core wire 191 of the cable 190 is connected to the end on the -x-axis side of the contact 140. The connection portion between the contact 140 and the core wire 191 of the cable 190 may be disposed inside the inner housing 130.

[0056] <Contact>

[0057] The contact 140 includes a conductor as a material. For example, the contact 140 includes a metal as a material. It should be noted that the contact 140 only needs to include a conductor and may also include a material other than metal. For example, the contact 140 is used as a transmission path for high-frequency signals.

[0058] The contact 140 is in a strip shape. The contact 140 is arranged in such a way that its central axis is located in the x-axis direction. Therefore, the contact 140 has a shape extending along the axial direction. The contact 140 has the convex portion 141 at one end on the +x-axis side. The contact 140 is arranged inside the internal housing 130. The other end of the contact 140 on the -x-axis side is connected to the core wire 191 of the cable 190. The convex portion 141 at one end on the +x-axis side of the contact 140 is connected to the contact 240 of the connector 200 on the female side. The convex portion 141 of the contact 140 has a convex shape that fits into the concave portion 241 of the contact 240.

[0059] <Casing>

[0060] The sleeve 150 includes a conductor as a material. For example, the sleeve 150 includes a metal as a material. It should be noted that the sleeve 150 only needs to include a conductor and may include materials other than metal.

[0061] The sleeve 150 is tubular, for example, cylindrical, and is arranged in such a manner that its central axis is located in the x-axis direction. The sleeve 150 includes a cylindrical first portion 151 and a cylindrical second portion 152, and the first portion 151 and the second portion 152 are connected in parallel in the x-axis direction. The first portion 151 is arranged on the +x-axis 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.

[0062] The first portion 151 is disposed inside the GND shell 120. The first portion 151 has a portion covering the shielding layer 193 exposed from one end 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 adjacent to one end of the outer cover 194 on the +x-axis direction side.

[0063] <External Shell>

[0064] The outer case 180 includes an insulator as a material. For example, the outer case 180 includes a resin as a material. It should be noted that the outer case 180 only needs to include an insulator, and may include a material other than resin.

[0065] The outer shell 180 is tubular, for example, a square tube, and is arranged such that its central axis is located in the x-axis direction. The outer shell 180 has components including the GND shell 110, the GND shell 120, the inner shell 130, the contact 140, and the sleeve 150 installed therein.

[0066] <Cable>

[0067] The structure of the cable 190 is described below. The cable 190 extends in one direction and has flexibility. The cable 190 includes the core wire 191, the coating layer 192, the shielding layer 193 and the outer cover 194. The core wire 191, the coating layer 192, the shielding layer 193 and the outer cover 194 are arranged in a plurality of concentric layers. These components are stacked concentrically with the core wire 191 as the center. When the cable 190 extends in the x-axis direction, these components are stacked concentrically with their central axes located in the x-axis direction. The coating layer 192 covers the side of the core wire 191. The shielding layer 193 covers the side of the coating layer 192. The outer cover 194 covers the side of the shielding layer 193.

[0068] The core wire 191 includes a conductor as a material. The core wire 191 is linear in shape. The core wire 191 may include, for example, a copper wire. It should be noted that the core wire 191 may include materials other than copper wire as long as it includes a linear conductor. A portion of the core wire 191 on the +x-axis side protrudes from one end of the coating layer 192 on the +x-axis side. The core wire 191 is connected to the other end on the -x-axis side of the contact 140.

[0069] The covering layer 192 includes an insulator as a material. For example, the covering layer 192 includes a resin as a material. It should be noted that the covering layer 192 only needs to include an insulator and may also include materials other than resin. The covering layer 192 is tubular. The covering layer 192 has a portion covering the side surface of the core wire 191. One end of the covering layer 192 on the +x-axis direction side may be a cut surface. A portion of the covering layer 192 on the +x-axis direction side may be exposed from one end of the shielding layer 193 on the +x-axis direction side.

[0070] The shielding layer 193 includes a conductor as a material. For example, the shielding layer 193 may include a metal. It should be noted that the shielding layer 193 may include materials other than metal as long as it includes a conductor. The shielding layer 193 is tubular. The shielding layer 193 has a portion covering the side of the coating layer 192. The shielding layer 193 is folded toward the -x-axis direction at one end of the +x-axis direction side. Specifically, one end of the +x-axis direction side of the shielding layer 193 is folded toward the -x-axis direction side along the edge of the +x-axis direction side of the first part 151 of the sleeve 150. The end of the +x-axis direction side of the folded shielding layer 193 is connected to the inner surface of the GND shell 120. Therefore, the shielding layer 193 is electrically connected to the ground potential. A portion of the +x-axis direction side of the shielding layer 193 may be exposed from one end of the +x-axis direction side of the outer cover 194.

[0071] The outer cover 194 includes an insulator as a material. For example, the outer cover 194 may include a resin. The outer cover 194 only needs to include an insulator, and may also include a material other than a resin. The outer cover 194 is tubular. The outer cover 194 has a portion covering the side of the shielding layer 193. The end of the outer cover 194 on the +x-axis direction side may be a cut surface. A portion of the outer cover 194 on the +-axis direction side may be covered with at least one of the sleeve 150 and the GND shell 120.

[0072] <Female connector>

[0073] Next, the female-side connector 200 will be described. Figure 5 1 is an exploded perspective view showing the components constituting the connector 200 in the relay connector device 10 according to the comparative example. Figure 1 , Figure 3 and Figure 5 As shown, the connector 200 includes a GND shell 210 , a GND shell 220 , an inner shell 230 , a contact 240 , a sleeve 250 and an outer shell 280 .

[0074] For the connector 100, the cable 190 is located on the -x-axis direction side of the connector 100, while for the connector 200, the cable 290 is located on the +x-axis direction side of the connector 200. In addition, the basic structures and functions of the GND housing 210, the GND housing 220, the inner housing 230, the contact 240, the sleeve 250, and the outer housing 280 of the connector 200 are the same as those of the GND housing 110, the GND housing 120, the inner housing 130, the contact 140, the sleeve 150, and the outer housing 180 of the connector 100, respectively.

[0075] <GND housing>

[0076] The GND housing 210 is disposed on the -x-axis direction side of the GND housing 220. The inner housing 230 and the contact 240 are disposed inside the GND housing 210 and the GND housing 220. The sleeve 250 and the cable 290 can be disposed inside the GND housing 220. The inner housing 230 can be press-fitted into the inside of the GND housing 210.

[0077] One end of the -x-axis direction side of the GND housing 210 is disposed adjacent to one end of the -x-axis direction side of the inner housing 230. The position of the end of the -x-axis direction side of the GND housing 210 on the x-axis can coincide with the position of the end of the -x-axis direction side of the inner housing 230 on the x-axis. One end of the +x-axis direction side of the GND housing 220 is located above the outer cover 294 of the cable 290. The end of the +x-axis direction side of the GND housing 220 is disposed adjacent to one end of the +x-axis direction side of the sleeve 250. For example, the position of the end of the +x-axis direction side of the GND housing 220 on the x-axis can coincide with the position of the end of the +x-axis direction side of the sleeve 250 on the x-axis.

[0078] <Inner housing>

[0079] The inner housing 230 is disposed inside the GND housing 210. The contact 240 is disposed inside the inner housing 230. Therefore, the contact 240 is disposed inside the GND housing 210. The inner housing 230 supports the contact 240.

[0080] 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 in shape, and the central axis thereof coincides with the central axis of the inner housing 230. The outer diameter of the first portion 231 is smaller than the outer diameter of the second portion 232. The first portion 231 is engaged with the recess 131 of the inner housing 130 of the connector 100. When the first portion 231 is engaged with the recess 131, the protrusion 141 of the contact 140 of the connector 100 is engaged with the recess 241 of the contact 240 of the connector 200.

[0081] One end of the inner shell 230 on the -x-axis direction side is the end surface of the first part 231 on the -x-axis direction side. The end of the inner shell 230 on the -x-axis direction side is arranged to be adjacent to one end of the GND shell 210 on the -x-axis direction side. For example, the position of the end on the -x-axis direction side of the inner shell 230 on the x-axis may coincide with the position of the end on the -x-axis direction side of the GND shell 210 on the x-axis. The recess 241 on the -x-axis direction side of the contact 240 is arranged inside the first part 231.

[0082] One end of the +x-axis side of the internal housing 230 is disposed adjacent to one end of the +x-axis side of the contact 240. For example, the position of the end of the +x-axis side of the internal housing 230 on the x-axis may coincide with the position of the other end of the +x-axis side of the contact 240 on the x-axis. The core wire 291 of the cable 290 is connected to the end of the +x-axis side of the contact 240. The connection portion between the contact 240 and the core wire 291 of the cable 290 may be disposed inside the internal housing 230.

[0083] <Contact>

[0084] The contact 240 has the concave portion 241 at one end on the -x-axis direction side. The contact 240 is provided inside the inner housing 230. One end on the +x-axis direction side of the contact 240 is connected to the core wire 291 of the cable 290. The convex portion 141 of the contact 140 is fitted into the concave portion 241 of the contact 240.

[0085] <Casing>

[0086] 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.

[0087] The first part 251 is disposed inside the GND shell 220. The first part 251 covers the shielding layer 293 exposed from one end of the outer cover 294 of the cable 290. The second part 252 covers the outer cover 294 of the cable 290. Therefore, the connection portion between the first part 251 and the second part 252 is adjacent to one end of the outer cover 294.

[0088] <Cable>

[0089] The cable 290 includes the core wire 291, the coating layer 292, the shielding layer 293, and the outer cover 294. The multiple structures and functions of the core wire 291, the coating layer 292, the shielding layer 293, and the outer cover 294 in the cable 290 are respectively the same as the multiple structures and functions of the core wire 191, the coating layer 192, the shielding layer 193, and the outer cover 194 in the cable 190. It should be noted that, however, the direction in which the core wire 291 is connected to the contact 240, the direction of the end surface of the coating layer 292 having the cut surface, the direction of the end of the shielding layer 293 and the direction in which it is folded, the direction of the end surface of the outer cover 294, etc. are opposite to those in the cable 190.

[0090] Next, a connection operation of the relay connector device 10 according to the comparative example will be described. Figure 6 2 is a cross-sectional view showing the connection operation of the connector 100 and the connector 200 in the relay connector device according to the comparative example. Figure 1 and Figure 6 As shown, in the relay connector device 10 according to the comparative example, the connector 100 and the connector 200 are opposite to each other. Then, the convex portion 141 of the contact 140 is engaged with the concave portion 241 of the contact 240. Thus, a transmission path of a high-frequency signal is formed between the contact 140 and the contact 240. At the same time, the first portion 231 of the internal housing 230 is engaged with the concave portion 131 of the internal housing 130. In addition, the GND shell 110 and the GND shell 210 are in contact with each other. Thus, a shielding layer covering the transmission path of the high-frequency signal is formed.

[0091] <Problems in Comparative Example>

[0092] Figure 7 is a perspective view showing the connector 200 in the relay connector device 10 according to the comparative example, showing Figure 3 An enlarged view of the VII section. Figure 7 As shown, in the relay connector device 10 according to the comparative example, the GND shell 210 in the connector 200 has a gap 211. The connector 200 has a structure in which the GND shell 210 is covered by the GND shell 220, so as to facilitate the manufacture of components. For example, the GND shell 220 is assembled into the GND shell 210 by utilizing the elasticity of the GND shell 210 and the GND shell 220 bending in the radial direction. Thus, the GND shell 210 and the GND shell 220 are electrically connected.

[0093] The connector 200 has a structure in which the gap 211 of the GND shell 210 is covered by the GND shell 220; however, Figure 7 As shown, it is difficult to completely cover the contact 240 and the like through which the signal flows with the GND shell 210 and the GND shell 220. For example, in some cases, the inner housing 230, the other end of the contact 240 exposed from the inner housing 230, the coating layer 292 exposed from the shielding layer 293, the core wire 291 exposed from the coating layer 292, etc. can be seen from the outside through the gap 211. Then, noise leaks to the outside of the connector 200, which makes it difficult to improve EMC.

[0094] <First Embodiment>

[0095] The relay connector device of the first embodiment is described below. In this embodiment, the gap of the GND shell is covered by the EMI shell. This improves EMC.

[0096] Figure 8 is a cross-sectional view showing the relay connector device 30 according to the first embodiment. Fig. 9 1 is a perspective view showing the connector 300 in the relay connector device 30 according to the first embodiment. Fig.10 FIG. 4 is a perspective view showing the connector 400 in the relay connector device 30 according to the first embodiment. Figures 8 to 10 It should be noted that the relay connector device 30 can be used separately from the external housing.

[0097] like Figures 8 to 10As shown, the relay connector device 30 of this embodiment includes the connector 300 and the connector 400. The connector 300 is, for example, a male-side connector 300, and the connector 400 is, for example, a female-side connector 400. The connector 300 is connected to one end of the cable 390. The connector 400 is connected to one end of the cable 490. The connector 300 is connected to the connector 400. The relay connector device 30 thus connects the cable 390 and the cable 490.

[0098] <Male-side connector>

[0099] Fig.11 is an exploded perspective view showing the components constituting the connector 300 in the relay connector device 30 according to the first embodiment. As Figures 8 to 9 and Fig.11 shown, the connector 300 includes a GND housing 310, the inner housing 330, contacts 340, a sleeve 350, the impedance regulator 360, an EMI housing 370, and an outer housing 380. The basic structures and functions of the GND housing 310, the inner housing 330, the contacts 340, the sleeve 350, and the outer housing 380 in the connector 300 are respectively the same as the structures and functions of the GND housing 110, the GND housing 120, the inner housing 130, the contacts 140, the sleeve 150, and the outer housing 180 in the connector 100. It should be noted that the connector 300 does not necessarily include the impedance regulator 360.

[0100] <GND housing>

[0101] The GND housing 310 corresponds to the integrated combination of the GND housing 110 and the GND housing 120 in the connector 100. The inner housing 330, the contacts 340, and the impedance regulator 360 are disposed inside the GND housing 310. In addition, the sleeve 350 and a part of the cable 390 are disposed inside the GND housing 310. The GND housing 310 has a portion that at least partially covers the inner housing 330. The inner housing 330 can be press-fitted inside the GND housing 310.

[0102] One end of the GND housing 310 on the +x-axis direction side is disposed adjacent to one end of the inner housing 330 on the +x-axis direction side. On the other hand, one end of the GND housing 310 on the -x-axis direction side is located above the outer jacket 394 of the cable 390. The position of the end of the GND housing 310 on the -x-axis direction side on the x-axis can coincide with the position of one end of the sleeve 350 on the -x-axis direction side on the x-axis.

[0103] <Inner Shell>

[0104] The inner housing 330 may include a portion of the impedance adjuster 360. For example, a portion of the −x-axis side of the inner housing 330 includes a portion of the +x-axis side of the impedance adjuster 360. It should be noted that when the connector 300 does not include the impedance adjuster 360, the inner housing 330 does not necessarily include the impedance adjuster 360.

[0105] The internal housing 330 is disposed inside the GND shell 310. The contact 340 is disposed inside the internal housing 330. The internal housing 330 supports the contact 340 inside. The internal housing 330 has a recess 331 on its end surface on the +x-axis direction side. One end of the contact 340 on the +x-axis direction side is exposed from the bottom surface of the recess 331. Therefore, the internal housing 330 supports the contact 340 inside in a manner that one end of the contact 340 is exposed. One end of the contact 340 on the +x-axis direction side includes a convex portion 341. The side wall of the recess 331 of the internal housing 330 surrounds the convex portion 341 on the +x-axis direction side of the contact 340.

[0106] One end of the inner housing 330 on the -x-axis direction side is disposed adjacent to one end of the contact 340 on the -x-axis direction side. For example, the position of the end on the -x-axis direction side of the inner housing 330 on the x-axis may coincide with the position of the other end on the -x-axis direction side of the contact 340 on the x-axis. The core wire 391 of the cable 390 is connected to the end on the -x-axis direction side of the contact 340. The connection portion between the contact 340 and the core wire 391 may be disposed inside the inner housing 330.

[0107] <Contact>

[0108] The contact 340 has the convex portion 341 at one end on the +x-axis direction side. The one end on the +x-axis direction side of the contact 340 is connected to the contact 440 of the female connector 400. The convex portion 341 on the +x-axis direction side of the contact 340 has a convex shape that fits with the contact 440. The other end on the -x-axis direction side of the contact 340 is connected to the core wire 391 of the cable 390.

[0109] <Casing>

[0110] 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 layer 393 exposed from one end of the outer cover 394 of the cable 390. The second portion 352 covers the outer cover 394 of the cable 390. Therefore, the connection portion between the first portion 351 and the second portion 352 is adjacent to one end of the outer cover 394.

[0111] <Impedance Adjuster>

[0112] The impedance adjuster 360 has a portion incorporated into the inner housing 330. Specifically, for example, a portion of the +x-axis direction side of the impedance adjuster 360 is incorporated into a portion of the -x-axis direction side of the inner housing 330. The impedance adjuster 360 may be incorporated into the inner housing 330 by insert molding. Alternatively, the impedance adjuster 360 may be incorporated into the inner housing 330 by being press-fitted into the inner housing 330.

[0113] The impedance adjuster 360 includes a conductor. For example, the impedance adjuster 360 includes a metal as a material. It should be noted that the impedance adjuster 360 may include materials other than metal as long as it includes a conductor. The impedance adjuster 360 can be electrically isolated from the contact 340 and the core wire 391 as a transmission path for high-frequency signals, and can be electrically isolated from the ground potential. In other words, the impedance adjuster 360 can be a hollow ground potential that is not directly connected to another conductor. This eliminates the need for a circuit for connecting the impedance adjuster 360 to another conductor, and reduces the impedance near the space layer 395 containing air in the relay connector device 30, thereby improving impedance matching.

[0114] It should be noted that the impedance adjuster 360 can be electrically connected to the ground potential. For example, the impedance adjuster 360 can be connected to the GND shell 310 so that the impedance adjuster 360 is maintained at the electrical ground potential. This allows the impedance near the space layer 395 containing air in the relay connector device 30 to be reduced, thereby improving impedance matching.

[0115] The impedance adjuster 360 is tubular. For example, the impedance adjuster 360 is cylindrical. The impedance adjuster 360 is arranged in a manner that its central axis is located in the x-axis direction. Therefore, the impedance adjuster 360 is tubular, and its central axis is located at the contact 340 and the core wire 391 of the cable 390.

[0116] It should be noted that the impedance regulator 360 can be square tubular or can be square tubular with rounded corners, as long as it is tubular. In addition, the impedance regulator 360 can be tubular, where multiple components are combined into a tubular shape, or can have a notch on a part of the tube. The impedance regulator 360 adjusts the impedance by surrounding the contact 340 and the core wire 391 at the central axis, thereby improving impedance matching.

[0117] The impedance regulator 360 is disposed inside the GND case 310 together with the internal case 330 and the contact 340. One end of the impedance regulator 360 on the +x-axis direction side is located inside the internal case 330. One end of the impedance regulator 360 on the -x-axis direction side is located above the coating 392 of the cable 390. One end of the coating 392 on the +x-axis direction side of the cable 390 is a cut surface. Therefore, the impedance regulator 360 covers the end of the coating 392. The impedance regulator 360 thus covers the exposed portion of the core wire 391.

[0118] As described above, the impedance regulator 360 covers the exposed portion of the core wire 391 connected to the contact 340, and the exposed portion is exposed from the internal case 330. The space layer 395 is formed between the exposed portion of the core wire 391 connected to the contact 340 and the GND case 310, and the exposed portion is exposed from the internal case 330. The impedance regulator 360 is disposed in the space layer 395 formed between the exposed portion and the GND case 310.

[0119] <EMI case>

[0120] The EMI case 370 contains a conductor as a material. For example, the EMI case 370 contains metal. It should be noted that the EMI case 370 only needs to contain a conductor and can also contain materials other than metal. The EMI case 370 has a semi-cylindrical shape. The EMI case 370 is connected to the GND case 310. The EMI case 370 is thus electrically connected to the ground potential. The EMI case 370 covers a part of the GND case 310. For example, the EMI case 370 covers the gap 311 of the GND case 310. Therefore, the EMI case 370 has a part that covers the gap 311 of the GND case 310. Multiple details of the EMI case 370 will be described later together with the EMI case 470 of the connector 400.

[0121] <External case>

[0122] The components of the GND housing 310, the internal housing 330, the contact member 340, the sleeve 350, the impedance regulator 360, and the EMI housing 370 are installed inside the external housing 380.

[0123] <Cable>

[0124] The cable 390 includes a core wire 391, a covering layer 392, a shielding layer 393, and an outer jacket 394. The structures and functions of the core wire 391, the covering layer 392, the shielding layer 393, and the outer jacket 394 in the cable 390 are respectively the same as those of the core wire 191, the covering layer 192, the shielding layer 193, and the outer jacket 194 in the cable 190.

[0125] <Female connector>

[0126] The connector 400 on the female side will be described below. Fig.12 is an exploded perspective view showing the components constituting the connector 400 in the relay connector device 30 according to the first embodiment. As Figure 8 , Fig.10 and Fig.12 shown, the connector 400 includes a GND housing 410, an internal housing 430, a contact member 440, a sleeve 450, an impedance regulator 460, an EMI housing 470, and an external housing 480.

[0127] For the connector 300, the cable 390 is located on the -x-axis direction side of the connector 300, while for the connector 400, the cable 490 is located on the +x-axis direction side of the connector 400. Except for this, the basic structures and functions of the GND housing 410, the internal housing 430, the contact member 440, the sleeve 450, the impedance regulator 460, the EMI housing 470, and the external housing 480 of the connector 400 are respectively the same as those of the GND housing 310, the internal housing 330, the contact member 340, the sleeve 350, the impedance regulator 360, the EMI housing 370, and the external housing 380 of the connector 300.

[0128] <GND housing>

[0129] The internal housing 430, the contact member 440, and the impedance regulator 460 are disposed inside the GND housing 410. In addition, a part of the sleeve 450 and the cable 490 is disposed inside the GND housing 410. The internal housing 430 can be press-fitted inside the GND housing 410.

[0130] One end of the GND shell 410 on the -x-axis direction side is disposed adjacent to one end of the inner housing 430 on the -x-axis direction side. On the other hand, one end of the GND shell 410 on the +x-axis direction side is located above the outer cover 494 of the cable 490. The position of the end on the +x-axis direction side of the GND shell 410 on the x-axis may coincide with the position of one end on the +x-axis direction side of the sleeve 450 on the x-axis.

[0131] <Inner Shell>

[0132] A portion of the +x-axis side of the internal housing 430 includes a portion of the -x-axis side of the impedance adjuster 460. The internal housing 430 is disposed inside the GND shell 410. The contact 440 is disposed inside the internal housing 430. Therefore, the internal housing 430 supports the contact 440 inside in a manner that one end of the contact 440 is exposed.

[0133] The inner housing 430 includes a first portion 431 and a second portion 432. The first portion 431 is disposed on the -x-axis side of the second portion 432. The first portion 431 and the second portion 432 are cylindrical in shape, and the central axis thereof coincides with the central axis of the inner housing 430. The outer diameter of the first portion 431 is smaller than the outer diameter of the second portion 432. The first portion 431 is engaged with the recess 331 of the inner housing 330 of the connector 300. When the first portion 431 is engaged with the recess 331, the protrusion 341 of the contact 340 of the connector 300 is engaged with the recess 441 of the contact 440 of the connector 400.

[0134] One end of the inner shell 430 on the -x-axis direction side is the end surface of the first part 431 on the -x-axis direction side. The end of the inner shell 430 on the -x-axis direction side is arranged to be adjacent to one end of the GND shell 410 on the -x-axis direction side. For example, the position on the x-axis of one end of the inner shell 430 on the -x-axis direction side may coincide with the position on the x-axis of the end of the GND shell 410 on the -x-axis direction side. The recess 441 on the -x-axis direction side of the contact 440 is arranged inside the first part 431.

[0135] One end of the +x-axis side of the internal housing 430 is disposed adjacent to one end of the +x-axis side of the contact 440. For example, the position of the end of the +x-axis side of the internal housing 430 on the x-axis may coincide with the position of the other end of the +x-axis side of the contact 440 on the x-axis. The core wire 491 of the cable 490 is connected to the end of the +x-axis side of the contact 440. The connection portion between the contact 440 and the core wire 491 of the cable 490 may be disposed inside the internal housing 430.

[0136] <Contact>

[0137] The contact 440 has the concave portion 441 at one end on the -x-axis direction side. The contact 440 is disposed inside the inner housing 430. One end on the +x-axis direction side of the contact 440 is connected to the core wire 491 of the cable 490. The convex portion 341 of the contact 340 in the male connector 300 is engaged with the concave portion 441 of the contact 440 in the female connector 400.

[0138] <Casing>

[0139] 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.

[0140] The first part 451 is disposed inside the GND shell 410. The first part 451 covers the shielding layer 493 exposed from one end of the outer cover 494 of the cable 490. The second part 452 covers the outer cover 494 of the cable 490. Therefore, the connection portion between the first part 451 and the second part 452 is adjacent to one end of the outer cover 494.

[0141] <Impedance Adjuster>

[0142] The impedance adjuster 460 has a portion incorporated in the inner housing 430. Specifically, for example, a portion of the impedance adjuster 460 on the −x-axis direction side is incorporated in a portion of the inner housing 430 on the +x-axis direction side.

[0143] The impedance regulator 460, together with the inner housing 430 and the contact 440, is disposed inside the GND housing 410. One end of the impedance regulator 460 on the -x-axis direction side is located inside the inner housing 430. One end of the impedance regulator 460 on the +x-axis direction side is located above the jacket 492 of the cable 490. One end of the jacket 492 on the -x-axis direction side of the cable 490 is a cut surface. Accordingly, the impedance regulator 460 covers the end of the jacket 492.

[0144] The impedance regulator 460 covers the exposed portion of the core wire 491 connected to the contact 440, and the exposed portion is exposed from the inner housing 430. The space layer 495 is formed between the exposed portion of the core wire 491 connected to the contact 440, which is exposed from the inner housing 430, and the GND housing 410. The impedance regulator 460 is disposed in the space layer 495 formed between the exposed portion and the GND housing 410.

[0145] <EMI housing>

[0146] The EMI housing 470 is connected to the GND housing 410 and covers a part of the GND housing 410. For example, the EMI housing 470 has a part covering the gap 411 of the GND housing 410. The multiple structures and functions of the EMI housing 470 are the same as those of the EMI housing 370. Multiple details of the EMI housing 370 and the EMI housing 470 will be described later.

[0147] Fig.13 is a perspective view showing the EMI housing 470 in the relay connector device 30 according to the first embodiment. As Fig.13 shown, the EMI housing 470 has a semi-cylindrical shape. The EMI housing 470 is disposed such that its central axis is in the x-axis direction.

[0148] The EMI housing 470 may include a first portion 471 and a second portion 472. The first portion 471 presents a semi-tubular shape with a part of its side surface cut. For example, the cross-section of the first portion 471 orthogonal to the central axis includes a U shape or a horseshoe shape. The second portion 472 also presents a semi-tubular shape with a part of its side surface cut. For example, the cross-section of the second portion 472 orthogonal to the central axis also includes a U shape or a horseshoe shape. The first portion 471 and the second portion 472 are integrally formed. It should be noted that a part of the +x-axis direction side of the first portion 471 and a part of the -x-axis direction side of the second portion 472 may be connected to each other.

[0149] Fig.14 1 is a side view showing the connector 400 with the EMI shell 470 removed from the relay connector device 30 according to the first embodiment. Fig.15 is a perspective view showing the connector 400 with the EMI shell 470 removed from the relay connector device 30 according to the first embodiment; Fig.16 4 is a cross-sectional perspective view showing the connector 400 with the EMI shell 470 removed from the relay connector device 30 according to the first embodiment. Fig.17 1 is a side view showing the connector 400 in the relay connector device 30 according to the first embodiment, in which the EMI shell 470 is shown as transparent. Fig.18 is a cross-sectional view showing the connector 400 in the relay connector device 30 according to the first embodiment, which shows Fig.10 XVIII cross section in. Fig.19 is a cross-sectional view showing the connector 400 in the relay connector device 30 according to the first embodiment, which shows Fig.10 XIX cross section in.

[0150] like Figures 13 to 19 As shown, the EMI shell 470 covers the GND shell 410, the inner shell 430, the contact 440, the sleeve 450, the core wire 491 of the cable 490, the coating layer 492 and the shielding layer 493 from the outside. The first part 471 covers the inner shell 430, and the GND shell 410 is interposed therebetween. In other words, the first part 471 covers part of the GND shell 410, and the part of the GND shell 410 covers the inner shell 430. The second part 472 covers the sleeve 450, and the GND shell 410 is interposed therebetween. In other words, the second part 472 covers part of the GND shell 410, and the part of the GND shell 410 covers the sleeve 450. One end of the EMI shell 470 on the +x-axis direction side is located above the GND shell 410. One end of the EMI shell 470 on the -x-axis direction side is also located above the GND shell 410.

[0151] like Figures 14 to 16 As shown in FIG. 4 , in a state where the EMI shell 470 is removed, the GND shell 410 has the gap 411, just like the relay connector device 10 according to the comparative example. Fig.17As shown, the EMI shell 470 covers the gap 411 of the GND shell 410. The EMI shell 470 covers at least any one of the inner shell 430, the end of the contact 440 exposed from the inner shell 430, and the core wire 491 connected to the other end of the contact 440 in the gap 411 of the GND shell 410. In addition, the EMI shell 470 may cover at least any one of the inner shell 430, the contact 440 exposed from the inner shell 430, the coating layer 492 exposed from the shielding layer 493, and the core wire 491 exposed from the coating layer 492 in the gap 411 of the GND shell 410. In this structure, the EMI shell 470 allows the control of the leakage of noise to the outside.

[0152] like Fig.14 and Fig.15 As shown, the GND shell 410 includes a retaining portion 413 and a retaining portion 414. The retaining portion 413 is located on the outer surface of a portion of the GND shell 410, and the outer surface of the portion of the GND shell 410 covers the inner shell 430. The retaining portion 414 is located on the outer surface of a portion of the GND shell 410, and the outer surface of the portion of the GND shell 410 covers the sleeve 450. The retaining portion 413 and the retaining portion 414 are, for example, concave in shape. It should be noted that the retaining portion 413 and the retaining portion 414 may be convex in shape as long as they are respectively engaged with the retaining portion 473 and the retaining portion 474 of the EMI shell 470.

[0153] The retaining portion 414 of the GND shell 410 may be formed when crimping on the GND shell 410 covering the sleeve 450. For example, the portion of the GND shell 410 covering the sleeve 450 is crimped. In this process, the portion of the GND shell 410 covering the sleeve 450 is compressed in the z-axis direction, so that both sides in the y-axis direction are pressed down, thereby forming the retaining portion 414 in a concave shape. In this way, the GND shell 410 can have the retaining portion 414 formed by crimping.

[0154] On the other hand, Fig.13 As shown, the EMI shell 470 includes the retaining portion 473 and the retaining portion 474. The retaining portion 473 is located on the inner surface of the first portion 471 of the EMI shell 470. The retaining portion 474 is located at the lower end of the second portion 472.

[0155] like Figures 17 to 19As shown, the holding portion 473 is engaged with the holding portion 413 of the GND shell 410. The holding portion 474 is engaged with the holding portion 414 of the GND shell 410. The connector 400 thus holds the EMI shell 470 to the GND shell 410.

[0156] The width of the first part 471 of the EMI shell 470 in a specific direction orthogonal to the x-axis direction may be different from the width of the second part 472 in the specific direction. The specific direction is, for example, the z-axis direction. For example, the outer diameter of the portion of the GND shell 410 covering the inner shell 430 is greater than the outer diameter of the portion of the GND shell 410 covering the sleeve 450. As described above, the portion of the GND shell 410 covering the sleeve 450 is crimped. Therefore, the width of this portion in the z-axis direction is less than the width of the portion covering the inner shell 430 in the z-axis direction. Therefore, in the EMI shell 470, the width of the first part 471 in the z-axis direction is greater than the width of the second part 472 in the z-axis direction.

[0157] It should be noted that, when the outer diameter of the portion of the GND shell 410 covering the sleeve 450 is greater than the outer diameter of the portion of the GND shell 410 covering the inner shell 430, the width of the first portion 471 in the z-axis direction may be smaller than the width of the second portion 472 in the z-axis direction. In addition, when the outer diameter of the portion of the GND shell 410 covering the sleeve 450 is the same as the outer diameter of the portion of the GND shell 410 covering the inner shell 430, the width of the first portion 471 in the EMI shell 470 in the z-axis direction may be the same as the width of the second portion 472 in the z-axis direction.

[0158] The above description of the EMI shell 470 in the connector 400 is also applicable to the EMI shell 370 in the connector 300 .

[0159] Fig. 20 FIG. 4 is a perspective view showing the connector 400 in the relay connector device 30 according to the first embodiment. Fig. 20 , the positions of laser welding using laser LS are shown. Fig. 20As shown, the EMI shell 470 is connected to the GND shell 410. The electrical connection can be improved by connecting the EMI shell 470 to the GND shell 410. This allows the EMI shell 470 to be reliably set at the ground potential. For example, the EMI shell 470 can be connected to the GND shell 410 by laser welding using the laser LS. Laser welding can reduce the time for connecting the EMI shell 470. The EMI shell 470 is preferably connected to the GND shell 410 near the edge of the -x-axis side of the EMI shell 470. Specifically, the EMI shell 470 is preferably connected to the GND shell 410 at the edge of the -x-axis side adjacent to the first part 471. This makes the potential of the EMI shell 470 closer to the ground potential, thereby improving EMC.

[0160] <External Shell>

[0161] Components of the GND shell 410 , the inner shell 430 , the contact 440 , the sleeve 450 , the impedance adjuster 460 , and the EMI shell 470 are installed inside the outer shell 480 .

[0162] <Cable>

[0163] The cable 490 includes the core wire 491, the coating layer 492, the shielding layer 493, and the outer cover 494. The multiple structures and functions of the core wire 491, the coating layer 492, the shielding layer 493, and the outer cover 494 in the cable 490 are respectively the same as the multiple structures and functions of the core wire 391, the coating layer 392, the shielding layer 393, and the outer cover 394 in the cable 390. It should be noted that, however, the direction in which the core wire 491 is connected to the contact 440, the direction of the end face of the coating layer 492 having the cut face, the direction of the end of the shielding layer 493 and the direction of its folding, the direction of the end face of the outer cover 494, etc. are opposite to those in the cable 390.

[0164] Next, the connection operation of the relay connector device 30 of this embodiment will be described. Fig.21 2 is a cross-sectional view showing the connection operation of the connector 300 and the connector 400 in the relay connector device 30 according to the first embodiment. Figure 8 and Fig.21As shown, in the relay connector device 30 according to the present embodiment, the connector 300 and the connector 400 are opposite to each other, and the convex portion 341 of the contact member 340 is engaged with the concave portion 441 of the contact member 440, thereby forming a transmission path of a high-frequency signal between the contact members 340 and the contact members 440. At the same time, the first portion 431 of the internal shell 430 is engaged with the concave portion 331 of the internal shell 330, and the GND shell 310 and the GND shell 410 are in contact with each other, and the EMI shell 370 and the EMI shell 470 respectively cover the gap 311 of the GND shell 310 and the gap 411 of the GND shell 410. Thus, a shielding layer covering the transmission path of the high-frequency signal is formed.

[0165] The beneficial effects of this embodiment are described below. The relay connector device 30 of this embodiment includes the EMI shell 370 and the EMI shell 470. The EMI shell 370 and the EMI shell 470 respectively cover the gap 311 of the GND shell 310 and the gap 411 of the GND shell 410, thereby improving EMC.

[0166] Fig. 22 : is a graph showing the EMI characteristics in the relay connector device 30 according to the first embodiment, wherein the horizontal axis represents the frequency of the signal and the vertical axis represents the amplitude of the signal in decibels (dB). The smaller the amplitude of the vertical axis, the better the EMI characteristics. Fig. 22 As shown, the EMI characteristics of the relay connector device 30 having the EMI shell 370 and the EMI shell 470 according to the first embodiment are better than the EMI characteristics of the relay connector device 10 according to the comparative example without the EMI shell 370 and the EMI shell 470. Unless otherwise specified, the EMI shell 370 and the EMI shell 470 are referred to as the EMI shell 370, etc. hereinafter. In some cases, the EMI shell 370 and the EMI shell 470 are referred to as the EMI shell 470, etc., so as to correspond to the drawings. Similarly, in some cases, the other components of the connector 300 and the connector 400 are also omitted.

[0167] Fig.23 1 is a diagram showing the leakage of noise to the outside of the relay connector device 10 according to the comparative example. Fig.24 2 is a diagram showing the leakage of noise to the outside of the relay connector device 30 according to the first embodiment. Fig.23As shown, in the relay connector device 10 according to the comparative example, since the EMI shell 370 and the like are not provided, the noise leakage to the outside is significant. Fig.24 As shown, in the relay connector device 30 according to the first embodiment, since the EMI shell 370 and the like are provided, the EMI shell 370 and the like control the leakage of noise to the outside, thereby improving the EMI characteristics.

[0168] The EMI case 370 and the EMI case 470 are respectively connected to the GND case 310 and the GND case 410. This allows the EMI case 370 and the like to be reliably set at a ground potential.

[0169] The EMI shell 370, etc. can be connected to the GND shell 310, etc. by laser welding. Laser welding can reduce the time for connecting the EMI shell 370, etc., thereby reducing the time required to manufacture the relay connector device 30. The EMI shell 370 and the EMI shell 470 are respectively connected to the edge of the +x-axis direction side of the GND shell 310 and the edge of the -x-axis direction side of the GND shell 410. This makes the potential of the EMI shell 370, etc. closer to the ground potential, thereby improving EMC.

[0170] The width of the first portion 471 of the EMI shell 470, etc. in a specific direction orthogonal to the axial direction is different from the width of the second portion 472 in the specific direction. For example, due to crimping, the portion of the GND shell 410, etc. covering the sleeve 450 is narrower than the portion of the GND shell 410, etc. covering the inner shell 430. The width of the second portion 472 in the EMI shell 470, etc. in the z-axis direction is thus smaller than the width of the first portion 471 in the z-axis direction. In this way, since the size of the EMI shell 370, etc. varies according to the size of the GND shell 310, etc., the gap 311, etc. is effectively closed, thereby improving EMC.

[0171] The GND shell 410, etc. includes the retaining portion 413 and the retaining portion 414, and the EMI shell 470, etc. includes the retaining portion 473 and the retaining portion 474. The retaining portion 413 and the retaining portion 414 are engaged with the retaining portion 473 and the retaining portion 474. This ensures the connection between the GND shell 410, etc. and the EMI shell 470, etc. In addition, the retaining portion 414 of the GND shell 410, etc. can be formed by crimping. This allows the retaining portion 414 to be formed and the GND shell 410, etc. to be crimped at the same time, thereby reducing the manufacturing process. In addition, since the width of the second portion 472 of the EMI shell 470 coincides with the width of the GND shell 410 after crimping, the gap 411 of the GND shell 410 is effectively closed.

[0172] The impedance adjuster 360 etc. is incorporated into the inner housing 330 etc. This allows the size and shape of the impedance adjuster 360 etc. to be fixed, thereby improving the stability of impedance.

[0173] In addition, the impedance adjuster 360, etc. in the relay connector device 30 according to the present embodiment is arranged in the space layer 395, and the space layer 395 is formed between the exposed portion of the core wire 391, etc. and the GND shell 310, etc. In this way, the increase in impedance of the core wire 391, etc. of the cable 390, etc. exposed in the space layer 395, etc. containing air can be suppressed. This further improves impedance matching. This allows controlling the increase in impedance in the core wire 391, etc. of the cable 390, etc. exposed in the space layer 395, etc. containing air. This further improves impedance matching.

[0174] The impedance adjuster 360 etc. is tubular in shape, with the central axis being located at the contact 340 etc. and the core wire 391 etc. This allows the contact 340 etc. and the core wire 391 etc. to be covered in an isotropic manner, thereby adjusting the impedance equally.

[0175] The impedance adjuster 360, etc. may be incorporated into the inner housing 330, etc. by insert molding. This allows the impedance adjuster 360, etc. to be securely fixed to the inner housing 330, etc. On the other hand, the impedance adjuster 360, etc. may be incorporated into the inner housing 330, etc. by being press-fitted into the inner housing 330, etc. This allows the impedance adjuster 360, etc. to be easily incorporated into the inner housing 330, etc.

[0176] Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and appropriate changes can be made within the scope of not impairing the purpose and effect thereof. In addition, the plurality of structures of the comparative example and the first embodiment can be appropriately combined.

[0177] From the above disclosure, it is obvious that the described multiple embodiments of the present invention can be changed in many ways. These changes should not be regarded as departing from the spirit and scope of the present invention, and all such modifications obvious to those skilled in the art are intended to be included in the scope of the appended claims.

Claims

1. A coaxial cable connector for connecting cables, characterized in that: The coaxial cable connector comprises: a contact member including a conductor as a material and extending in an axial direction; an insulator body including an insulator as a material and supporting the contact piece in such a manner that one end of the contact piece is exposed; A GND shell including the conductor as a material and having a portion at least partially covering the insulator body; and an EMI shell including the conductor as a material and having a portion covering a gap of the GND shell, The EMI shell covers at least any one of the insulator body, the contact exposed from the insulator body, and a core wire of the cable connected to the other end of the contact in the gap.

2. The coaxial cable connector according to claim 1, wherein: The cable comprises: The core wire includes the conductor as a material and is connected to the other end of the contact; a coating layer including the insulator as a material and having a portion covering the core wire; a shielding layer including the conductor as a material and having a portion covering the coating layer; and an outer cover including the insulator as a material and having a portion covering the shielding layer, and The EMI shell covers at least any one of the insulator body, the contact exposed from the insulator body, the covering layer exposed from the shielding layer, and the core wire exposed from the covering layer and connected to the other end of the contact in the gap.

3. The coaxial cable connector according to claim 2, wherein: The coaxial cable connector also includes: a sleeve having a portion covering the shielding layer exposed from the housing, wherein the EMI shell comprises: A first part, covering the insulator body, with the GND shell interposed therebetween; and The second part covers the sleeve, with the GND shell interposed therebetween, and A width of the first portion in a specific direction orthogonal to the axial direction is different from a width of the second portion in the specific direction.

4. The coaxial cable connector according to claim 1, wherein: The GND shell includes a first holding portion, and the EMI shell includes a second holding portion configured to be engaged with the first holding portion.

5. The coaxial cable connector according to claim 3, wherein: The GND shell includes a first holding portion formed by crimping, and the second portion of the EMI shell includes a second holding portion configured to fit with the first holding portion.

6. The coaxial cable connector according to claim 1, wherein: The EMI shell is connected to the GND shell.

7. The coaxial cable connector according to claim 6, wherein: The EMI shell and the GND shell are connected by laser welding.

8. The coaxial cable connector according to claim 6, wherein: The EMI shell is connected to the GND shell at an edge near one end of the EMI shell.

Images