Connector-equipped shielded cable

Abstract

To provide a connector-equipped shielded cable allowing suppression of high-frequency noise and further enabling reliable prevention of noise generation due to a low-frequency current flowing in a shield portion.SOLUTION: A shield portion 50 of a cable 20 of a connector-equipped shielded cable 1 has: a first shield portion 51 positioned on a one-end side 20a of the cable 20 and electrically connected to a grounding portion 17 of a first connector 11; and a second shield portion 52 positioned on an other-end side 20b separated from the first shield portion 51 to the other side in an extension direction of the cable 20, and electrically connected to a grounding portion 18 of a second connector 12, wherein the cable 20 of the connector-equipped shielded cable 1 has a capacitor 60 electrically connecting the first shield portion 51 and the second shield portion 52.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a connector-equipped shielded cable having a cable with a conductive shield portion covering a core wire, and a connector connected to the end of the cable and provided with a grounding portion that grounds the shield portion. [Background technology]

[0002] A shielded cable with a connector is known, which includes a cable having a conductive shield portion that covers a core wire, and a connector that is connected to the end of the cable and has a grounding portion that grounds the shield portion.

[0003] For example, Non-Patent Document 1 discloses a LAN cable with a connector in which the core wire inside the cable is wrapped in metal foil, braided wire, or the like that functions as a shielding section. The connector connected to the end of the cable is provided with a metal cover that functions as a grounding section. Non-Patent Document 1 discloses that by grounding the metal cover, degradation of the cable performance due to loop current, etc. is prevented. [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] "How to choose a LAN cable", ELECOM, [searched March 19, 2024], [online],<URL:https: / / www.elecom.co.jp / pickup / contents / 00103 / > Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, the grounding portion of the connector, such as the metal cover in Non-Patent Document 1, is grounded when the connector is inserted into the connector insertion port. Furthermore, in the above-mentioned cable, the grounding portion is generally electrically connected to the shielding portion of the cable. Therefore, when the connector is inserted into the connector insertion port, the grounding portion and the shielding portion are grounded. This allows current with high-frequency components (high-frequency current) generated in the shielding portion due to, for example, electromagnetic waves propagating through the air to flow through the grounding portion to the grounded connector insertion port. In this way, high-frequency noise generated by the electromagnetic waves can be prevented.

[0006] However, a potential difference may occur between the grounding parts of the connectors located at both ends of the cable. In this case, when one connector is inserted into one connector insertion port and the other connector is inserted into the other connector insertion port, a low-frequency current flows through the shielding part. This may cause noise such as spark noise.

[0007] Therefore, it is desirable to prevent the generation of noise caused by the low frequency current flowing through the shield portion while suppressing the high frequency noise caused by the high frequency current flowing through the shield portion.

[0008] An object of the present invention is to provide a shielded cable with connector that can more reliably prevent the generation of noise caused by low-frequency current flowing through the shield portion while suppressing the generation of high-frequency noise. [Means for solving the problem]

[0009] A shielded cable with connector according to one embodiment of the present invention includes a cable having a plurality of covered wires each having a covered core wire, a conductive shield covering the plurality of covered wires, and an insulating exterior covering the shield, a first connector connected to one end of the cable, and a second connector connected to the other end of the cable, each having a grounding portion for grounding the shield. The shielding portion includes a first shielding portion located at the one end of the cable and electrically connected to the grounding portion of the first connector, and a second shielding portion located at the other end, spaced apart from the first shielding portion in the other direction of extension of the cable, and electrically connected to the grounding portion of the second connector. The cable also includes a capacitor electrically connecting the first shielding portion and the second shielding portion (first configuration).

[0010] In the above-described configuration, the first shield part electrically connected to the ground part of the first connector is spaced apart in the extension direction from the second shield part electrically grounded to the ground part of the second connector. The first shield part and the second shield part are electrically connected via a capacitor. The capacitor has a property of allowing current of high frequency components (high frequency current) to flow but not current of low frequency components (low frequency current).

[0011] As a result, high-frequency currents generated in the first and second shielding sections due to electromagnetic waves propagating through the air or electromagnetic waves generated from multiple covered wires pass through the capacitor and flow to the grounding section of the first connector or the grounding section of the second connector, thereby suppressing the generation of high-frequency noise due to the high-frequency currents.

[0012] Furthermore, even if a potential difference occurs between the ground portion of the first connector and the ground portion of the second connector, the capacitor prevents the low-frequency current from flowing between the first shield portion and the second shield portion. Therefore, for example, when the first connector is inserted into the first connector insertion port and the second connector is inserted into the second connector insertion port, it is possible to prevent the generation of noise such as spark noise caused by the low-frequency current flowing between the first shield portion and the second shield portion.

[0013] Therefore, it is possible to provide a shielded cable with connector that can more reliably prevent the generation of noise caused by low-frequency current flowing between the first shield portion and the second shield portion while suppressing the generation of high-frequency noise.

[0014] In the first configuration, the cable further includes an insulating portion that has electrical insulation properties and covers the multiple coated wires between the first shield portion and the second shield portion (second configuration).

[0015] As a result, since the insulating portion covers the plurality of covered wires, it is possible to prevent, for example, a capacitor or the like from coming into direct contact with the plurality of covered wires.

[0016] In the first configuration, the cable includes a plurality of the capacitors that electrically connect the first shield portion and the second shield portion in parallel (third configuration).

[0017] This allows the required capacitance to be achieved by electrically connecting multiple capacitors in parallel, thereby making it possible to obtain the required capacitance without increasing the size of the capacitor, thereby preventing the connector-attached shielded cable having the capacitor from becoming too large.

[0018] In the first configuration, the cable further has a conductive wire having a first wire portion located on the one end side of the cable, electrically connected to the ground portion of the first connector and in contact with the first shield portion, and a second wire portion located on the other end side, away from the first wire portion in the other direction of extension of the cable, electrically connected to the ground portion of the second connector and in contact with the second shield portion (fourth configuration).

[0019] As a result, the first wire portion and the second wire portion are positioned apart from each other in the extension direction, so that even if a potential difference occurs between the ground portion of the first connector and the ground portion of the second connector, no current flows between the first wire portion and the second wire portion.

[0020] Furthermore, high-frequency current generated in the first shielding portion due to electromagnetic waves, etc. can be conducted to the grounding portion of the first connector by the first wire portion, and high-frequency current generated in the second shielding portion can be conducted to the grounding portion of the second connector by the second wire portion.

[0021] Therefore, it is possible to more effectively suppress the generation of high-frequency noise caused by high-frequency current, while preventing the generation of noise caused by the current flowing between the first wire portion and the second wire portion.

[0022] In the first configuration, the exterior body has an exposed portion that exposes at least a portion of the first shield portion on the second shield portion side and at least a portion of the second shield portion on the first shield portion side, and the capacitor electrically connects at least a portion of the first shield portion on the second shield portion side and at least a portion of the second shield portion on the first shield portion side, which are exposed in the exposed portion (fifth configuration).

[0023] This allows at least a portion of the first shield section facing the second shield section and at least a portion of the second shield section facing the first shield section to be exposed from the exterior housing by the exposed portion, thereby easily electrically connecting at least a portion of the first shield section facing the second shield section and at least a portion of the second shield section facing the first shield section, which are each exposed from the exterior housing, by a capacitor.

[0024] In the fifth configuration, the exposed portion has a size capable of accommodating the capacitor (sixth configuration).

[0025] This allows the capacitor to be housed within the exposed portion without overlapping with the exterior body in the radial direction of the cable, thereby providing a more compact connector-equipped shielded cable.

[0026] In the third configuration, the plurality of capacitors are arranged at equal intervals in the circumferential direction radially outward of the plurality of covered wires when the cable is viewed in the extension direction (seventh configuration).

[0027] This allows the capacitors to be arranged at equal intervals radially outward from the covered wires, thereby reducing the cable diameter of the connectorized shielded cable at the portion including the capacitors, thereby realizing a more compact connectorized shielded cable. [Effects of the Invention]

[0028] The shielded cable with connector of the present invention includes a cable having a plurality of covered wires each having a covered core wire, a conductive shield covering the plurality of covered wires, and an insulating exterior covering the shield, a first connector connected to one end of the cable and a second connector connected to the other end of the cable, each having a grounding portion for grounding the shield. The shielding portion includes a first shielding portion located at the one end of the cable and electrically connected to the grounding portion of the first connector, and a second shielding portion located at the other end, spaced apart from the first shielding portion in the other direction of extension of the cable, and electrically connected to the grounding portion of the second connector. The cable also includes a capacitor electrically connecting the first shielding portion and the second shielding portion.

[0029] As a result, high-frequency currents generated in the first and second shielding portions due to electromagnetic waves or the like pass through the capacitor and flow to the grounding portion of the first connector or the grounding portion of the second connector. On the other hand, even if a potential difference occurs between the grounding portion of the first connector and the grounding portion of the second connector, the capacitor prevents low-frequency currents from flowing between the first and second shielding portions. Therefore, it is possible to provide a shielded cable with connectors that can more reliably prevent noise caused by low-frequency currents while suppressing the generation of high-frequency noise caused by the high-frequency currents. [Brief explanation of the drawings]

[0030] [Figure 1] FIG. 1 is a side view showing the overall configuration of a connector-attached shielded cable according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a partially enlarged view illustrating the electrical connection structure between the grounding portion of the first connector and the first shield portion of the cable when the first connector is inserted into a connector insertion port of a telecommunications device. [Figure 3] FIG. 3 is an end view taken along line III-III in FIG. [Figure 4] FIG. 4 is an enlarged view of the portion of the cable where the capacitor is located. [Figure 5] FIG. 5 is a cross-sectional view taken along line VV in FIGS. [Figure 6] FIG. 6 is a side view showing the overall configuration of a connector-attached shielded cable according to a second embodiment of the present invention. [Figure 7] FIG. 7 is a partially enlarged view of the first connector showing the first wire portion in contact with the contact portion of the grounding portion of the first connector. [Figure 8] FIG. 8 is an end view taken along line VIII-VIII in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0031] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals and the description thereof will not be repeated.

[0032] The direction in which the cable 20 extends will be referred to as the extension direction. When the cable 20 is viewed in the extension direction, the outer circumferential direction of the cable 20 having a circular cross section will be referred to as the circumferential direction.

[0033] Furthermore, in the following description, the expressions "fix," "connect," and "attach" (hereinafter referred to as "fixing") include not only cases where members are directly fixed to each other, but also cases where members are fixed via other members. In other words, in the following description, the expression "fixing" includes both direct and indirect fixing of members to each other.

[0034] [Embodiment 1] (Overall composition) First, a connector-equipped shielded cable 1 according to a first embodiment will be described with reference to Figures 1 to 5. The connector-equipped shielded cable 1 is used as, for example, a LAN cable for information communication.

[0035] 1, the connectorized shielded cable 1 includes a first connector 11, a second connector 12, and a cable 20. The cable 20 is configured to be able to transmit signals between the first connector 11 and the second connector 12.

[0036] (First connector 11 and second connector 12) The first connector 11 is connected to one end 20a of the cable 20 in the extension direction (one end 20a of the cable 20). In FIG. 1, the first connector 11 is inserted into a connector insertion port P1 of the telecommunications device M1. The second connector 12 is connected to the other end 20b of the cable 20 in the extension direction (the other end 20b of the cable 20). In FIG. 1, the second connector 12 is inserted into a connector insertion port P2 of the telecommunications device M2.

[0037] In this embodiment, the connector insertion port P1 of the telecommunications device M1 and the connector insertion port P2 of the telecommunications device M2 are grounded at different ground points E1 and E2, respectively. Specifically, as shown in Fig. 1, the connector insertion port P1 of the telecommunications device M1 into which the first connector 11 is inserted is grounded at the first ground point E1. The connector insertion port P2 of the telecommunications device M2 into which the second connector 12 is inserted is grounded at the second ground point E2.

[0038] The first connector 11 and the second connector 12 have the same configuration. Therefore, in the following, only the first connector 11 will be described unless it is necessary to distinguish between the first connector 11 and the second connector 12.

[0039] As shown in FIG. 2, the first connector 11 has a plurality of terminals 13, a case 15, and a grounding portion 17.

[0040] The plurality of terminals 13 are located at one end of the first connector 11 in the extension direction, and have eight metal pieces arranged in the width direction (the depth direction of the paper in FIG. 2), which is a direction perpendicular to the extension direction. The plurality of terminals 13 have a known configuration, and therefore a detailed description thereof will be omitted.

[0041] 2, the multiple terminals 13 are each electrically connected to a core wire 31 of a multiple covered wire 30 of a cable 20 (described later). When the first connector 11 is inserted into a connector insertion port P1 of a telecommunications device M1, the core wires 31 are electrically connected to a terminal (not shown) in the connector insertion port P1 via the multiple terminals 13.

[0042] The case 15 is an electrically insulating resin container having a generally rectangular parallelepiped shape that can be inserted into the connector insertion port P1. The case 15 is connected to one end 20a of the cable 20. The case 15 covers the terminals 13, as well as the shield portion 50 and the coated wires 30 that are exposed from an outer casing 90 (described later) at the one end 20a of the cable 20. The case 15 has a known configuration, and therefore a detailed description thereof will be omitted.

[0043] Grounding portion 17 is a thin, conductive metal plate that covers part of the outer circumferential surface of case 15. Specifically, grounding portion 17 covers both side portions 15c and an upper portion 15d in the width direction of case 15. One tip 15a and a lower portion 15b in the extension direction of case 15 are not covered by grounding portion 17 and are exposed.

[0044] 2, when the first connector 11 is inserted into the connector insertion port P1 of the telecommunications device M1, the grounding portion 17 of the first connector 11 is electrically connected to the first grounding point E1 in the connector insertion port P1. As a result, the grounding portion 17 is grounded at the first grounding point E1.

[0045] 1, when the second connector 12 is inserted into the connector insertion port P2 of the telecommunications device M2, the grounding portion 18 of the second connector 12 is electrically connected to the second grounding point E2 in the connector insertion port P2. As a result, the grounding portion 18 is grounded at the second grounding point E2.

[0046] The grounding portion 17 of the first connector 11 has a contact portion G1. The contact portion G1 is a part of the grounding portion 17 and is in contact with a first shield portion 51 of the cable 20, which will be described later. Similarly, the grounding portion 18 of the second connector 12 has a contact portion G2. The contact portion G2 is a part of the grounding portion 18 and is in contact with a second shield portion 52 of the cable 20, which will be described later.

[0047] (cable) 1, the cable 20 includes a plurality of covered wires 30, a shield section 50, a capacitor 60, an insulating section 80, an outer casing 90, and a cover 99. The cable 20 is an STP (Shielded Twisted Pair) cable in which the plurality of covered wires 30 are covered with the shield section 50, which is a conductive shield.

[0048] As shown in Fig. 3, the multiple covered wires 30 are covered by a shield portion 50 and an exterior body 90. The multiple covered wires 30 include eight covered single wires L. Specifically, the multiple covered wires 30 are a twisted pair cable including four pairs of twisted wires each formed by twisting two covered single wires L together. A known configuration can be used for the twisted pair cable, and therefore a detailed description thereof will be omitted.

[0049] The coated solid wire L has a core wire 31 and a coating 32. The core wire 31 is a metal conductor. The coating 32 is an electrically insulating resin that covers the outer periphery of the core wire 31. As shown in FIG. 1 , the core wires 31 located at both ends in the extension direction of the multiple coated wires 30 are each exposed from the coating 32. The core wire 31 located at one end in the extension direction is electrically connected to multiple terminals 13 of the first connector 11. The core wire 31 located at the other end in the extension direction is electrically connected to multiple terminals 14 of the second connector 12.

[0050] 1 and 3, the shielding portion 50 is a thin conductive metal film that covers the entirety of the multiple coated wires 30 and extends in the extension direction. As shown in FIG. 1, the shielding portion 50 has a first shielding portion 51 and a second shielding portion 52.

[0051] The first shield part 51 is located on one end 20a side in the extension direction of the cable 20. The second shield part 52 is located on the other end 20b side in the extension direction of the cable 20. The first shield part 51 and the second shield part 52 are located apart from each other in the extension direction. In other words, the second shield part 52 is located apart from the first shield part 51 on the other side in the extension direction.

[0052] As described above, the first shield part 51 is in contact with the contact part G1 of the ground part 17 of the first connector 11. Therefore, the first shield part 51 is electrically connected to the ground part 17 via the contact part G1. Therefore, as shown in FIG. 2 , when the first connector 11 is inserted into the connector insertion port P1, which is grounded at the first ground point E1, and the ground part 17 is grounded at the first ground point E1, the first shield part 51 is grounded at the first ground point E1 via the contact part G1 of the ground part 17.

[0053] 1 , the second shield part 52 is in contact with the contact portion G2 of the grounding part 18 of the second connector 12. Therefore, the second shield part 52 is electrically connected to the grounding part 18 via the contact portion G2. Therefore, when the second connector 12 is inserted into the connector insertion port P2, which is grounded at the second grounding point E2, and the grounding part 18 is grounded at the second grounding point E2, the second shield part 52 is grounded at the second grounding point E2 via the contact portion G2 of the grounding part 18. In this way, the first shield part 51 is grounded at the first grounding point E1, and the second shield part 52 is grounded at the second grounding point E2.

[0054] The capacitor 60 is located between the first shield section 51 and the second shield section 52, and electrically connects the first shield section 51 and the second shield section 52. The insulating section 80 is an electrically insulating thin film that covers the multiple coated wires 30 that are exposed to the exterior body 90 between the first shield section 51 and the second shield section 52. The capacitor 60 and the insulating section 80 will be described in detail later.

[0055] As shown in Figures 1 and 3, the exterior body 90 covers the outer periphery of the shield portion 50 and has a cylindrical shape extending in the extension direction. The exterior body 90 is, for example, a cable cover made of an electrically insulating resin. As shown in Figure 1, the exterior body 90 covers the first shield portion 51 and the second shield portion 52, avoiding the portion of the cable 20 where the capacitor 60 is located. The cover 99 has a cylindrical shape and covers the portion of the cable 20 where the capacitor 60 is located. The cover 99 is, for example, a case made of an electrically insulating resin. The configuration of the exterior body 90 and the cover 99 relative to the capacitor 60 will be described later.

[0056] (Capacitor and its peripheral configuration) Fig. 4 is an enlarged view of a portion of cable 20 where capacitor 60 is located. Although not specifically shown, in Fig. 4, first shield part 51 is grounded at first ground point E1, and second shield part 52 is grounded at second ground point E2, as described above.

[0057] As shown in FIGS. 4 and 5 , in this embodiment, when viewed in the extension direction of the cable 20, multiple capacitors 60 are arranged in a circumferential direction radially outward of the multiple covered wires 30 exposed from the outer casing 90 between the first shielding portion 51 and the second shielding portion 52. Each of the multiple capacitors 60 has a conductor 62. The conductor 62 is a conductive metal member. Each of the multiple capacitors 60 electrically connects the first shielding portion 51 and the second shielding portion 52 in parallel via the conductor 62. Specifically, as shown in FIG. 5 , in this embodiment, the multiple capacitors 60 are arranged, for example, four at equal intervals of 90 degrees in the circumferential direction. Since a known configuration can be used for the capacitors 60, detailed description thereof will be omitted. Like a general capacitor, the capacitor 60 has the property of passing current with high-frequency components (high-frequency current) but not with low-frequency components (low-frequency current). The capacitor 60 can change the frequency band of current that can pass through it by adjusting the capacitive reactance by changing the capacitance. In this embodiment, the frequency band that can pass through the capacitor 60 is, for example, a frequency band of 300 Hz or higher, so that the capacitor 60 does not pass the low-frequency current, such as AC current (50 Hz or 60 Hz) from a commercial power source.

[0058] As shown in FIGS. 1 and 4 , in this embodiment, the exterior body 90 has a first exterior body 91, a second exterior body 92, and an exposed portion 93. The first exterior body 91 covers the first shielding portion 51. The second exterior body 92 covers the second shielding portion 52. The first exterior body 91 and the second exterior body 92 are positioned apart from each other in the extension direction. The exposed portion 93 is formed between the first exterior body 91 and the second exterior body 92. In other words, the exposed portion 93 is a portion where the exterior body is missing between the other end of the first exterior body 91 in the extension direction and one end of the second exterior body 92 in the extension direction.

[0059] 4, the exposed portion 93 exposes the end 51b of the first shield portion 51 on the second shield portion 52 side, the end 52a of the second shield portion 52 on the first shield portion 51 side, and a plurality of coated wires 30 located between the end portions 51b, 52a in the extension direction. The plurality of capacitors 60 electrically connect the end 51b of the first shield portion 51 on the second shield portion 52 side, which is exposed in the exposed portion 93, and the end 52a of the second shield portion 52 on the first shield portion 51 side, via conductive wires 62.

[0060] When viewed radially from the exposed portion 93, the multiple capacitors 60 are located at positions that do not overlap with the first exterior body 91 and the second exterior body 92. That is, the multiple capacitors 60 are located in the cable 20 so as to be housed within the exposed portion 93. The exposed portion 93 has a size that can house the multiple capacitors 60. Specifically, when viewed radially from the exposed portion 93, the length S2 of the exposed portion 93 in the extension direction is greater than the length S1 of the multiple capacitors 60 in the extension direction.

[0061] The insulating portion 80 is located between the first shielding portion 51 and the second shielding portion 52 in the extension direction, and is also located between the multiple covered wires 30 and the capacitor 60 and the conductor 62 in the radial direction when the cable 20 is viewed in the extension direction. The insulating portion 80 is an electrically insulating thin film, and covers the multiple covered wires 30 exposed from the outer casing 90 between the first shielding portion 51 and the second shielding portion 52.

[0062] The cover 99 covers the capacitor 60, the insulating part 80, the end 91b of the first exterior body 91 on the second exterior body 92 side, the end 51b of the first shield part 51 on the second shield part 52 side that is exposed from the first exterior body 91, the end 52a of the second shield part 52 on the first shield part 51 side that is exposed from the second exterior body 92, and the end 92a of the second exterior body 92 on the first exterior body 91 side. This makes it possible for the cover 99 to maintain a more stable electrical connection between the first shield part 51 and the second shield part 52 by the capacitor 60.

[0063] As described above, the connector-attached shielded cable 1 according to the present embodiment includes a cable 20 having a plurality of covered wires 30 each having a covered core wire 31, a conductive shield portion 50 covering the plurality of covered wires 30, and an insulating outer casing 90 covering the shield portion 50; a first connector 11 connected to one end 20a of the cable 20 and a second connector 12 connected to the other end 20b of the cable 20, each having ground portions 17, 18 for grounding the shield portion 50. The shield portion 50 includes a first shield portion 51 located at the one end 20a of the cable 20 and electrically connected to the ground portion 17 of the first connector 11, and a second shield portion 52 located at the other end 20b of the cable 20, spaced apart from the first shield portion 51 in the other direction of extension of the cable 20, and electrically connected to the ground portion 18 of the second connector 12. The cable 20 also includes a capacitor 60 electrically connecting the first shield portion 51 and the second shield portion 52.

[0064] As described above, the first shield portion 51, which is electrically connected to the ground portion 17 of the first connector 11, is located apart in the extension direction of the cable 20 from the second shield portion 52, which is electrically grounded to the ground portion 18 of the second connector 12. The first shield portion 51 and the second shield portion 52 are electrically connected via the capacitor 60. As described above, the capacitor 60 has the property of allowing high-frequency current to flow but not low-frequency current to flow.

[0065] As a result, high-frequency currents generated in first shield section 51 and second shield section 52 due to electromagnetic waves propagating through the air or electromagnetic waves generated from multiple covered wires pass through capacitor 60 and flow to ground section 17 of first connector 11 or ground section 18 of second connector 12. This makes it possible to suppress the generation of high-frequency noise due to high-frequency currents.

[0066] Furthermore, when a potential difference occurs between the first ground point E1 and the second ground point E2, a potential difference occurs between the ground portion 17 of the first connector 11, which is grounded to the first ground point E1, and the ground portion 18 of the second connector 12, which is grounded to the second ground point E2. Even in such a case, the capacitor 60 prevents a low-frequency current from flowing between the first shield portion 51 and the second shield portion 52. Therefore, it is possible to prevent the generation of noise caused by the low-frequency current, such as spark noise that occurs when inserting the first connector 11 into the connector insertion port P1 or the second connector 12 into the connector insertion port P2.

[0067] Therefore, it is possible to provide a connector-equipped shielded cable 1 that can more reliably prevent the generation of noise due to low-frequency current while suppressing the generation of high-frequency noise due to high-frequency current.

[0068] In the connector-attached shielded cable 1 according to this embodiment, the cable 20 further includes an insulating portion 80 that is located between the first shield portion 51 and the second shield portion 52 and that covers the multiple coated wires 30.

[0069] As a result, the insulating portion 80 covers the multiple covered wires 30, which prevents, for example, the capacitor 60 or the like from coming into direct contact with the multiple covered wires 30. Therefore, it is possible to prevent the multiple covered wires 30 from being damaged by, for example, the capacitor 60 or the like.

[0070] Furthermore, since the insulating section 80 is located between the first shield section 51 and the second shield section 52, the first shield section 51 and the second shield section 52 can be more reliably electrically insulated from each other except for the capacitor 60. This allows the first shield section 51 and the second shield section 52 to be more reliably electrically connected via the capacitor 60.

[0071] In the connectorized shielded cable 1 according to this embodiment, the cable 20 has a plurality of capacitors 60 that electrically connect the first shield portion 51 and the second shield portion 52 in parallel.

[0072] According to the above-described configuration, the required capacitance can be ensured by the total capacitance of the multiple capacitors 60. This allows the capacitance of each capacitor 60 to be small. This ensures the required capacitance while preventing the capacitors 60 from becoming too large. This prevents the connector-attached shielded cable 1 from becoming too large.

[0073] In the connector-attached shielded cable 1 according to this embodiment, the capacitors 60 are arranged radially outward of the coated wires 30 at equal intervals in the circumferential direction when viewed in the extension direction of the cable 20.

[0074] This allows the plurality of capacitors 60 to be arranged at equal intervals around the outer periphery of the plurality of coated wires 30, thereby making it possible to further reduce the outer diameter of the cable 20 having the plurality of capacitors 60. As a result, a more compact connector-equipped shielded cable 1 can be provided.

[0075] In the connector-attached shielded cable 1 according to this embodiment, the exterior casing 90 has an exposed portion 93 that exposes the end 51b of the first shield portion 51 on the second shield portion 52 side and the end 52a of the second shield portion 52 on the first shield portion 51 side. The capacitor 60 electrically connects the end 51b of the first shield portion 51 on the second shield portion 52 side, which are exposed at the exposed portion 93, to the end 52a of the second shield portion 52 on the first shield portion 51 side.

[0076] In the above-described configuration, the exposed portion 93 allows the end 51b of the first shield portion 51 on the second shield portion 52 side and the end 52a of the second shield portion 52 on the first shield portion 51 side to be exposed from the exterior body 90. This allows both ends 51b, 52a exposed from the exterior body 90 to be easily electrically connected by the capacitor 60. This makes it easier to manufacture the connector-equipped shielded cable 1.

[0077] In the connector-attached shielded cable 1 according to this embodiment, the exposed portion 93 has a size that allows the capacitor 60 to be housed therein.

[0078] This allows capacitor 60 to be housed within exposed portion 93 without overlapping with exterior body 90. Therefore, a more compact connector-equipped shielded cable 1 can be provided.

[0079] [Embodiment 2] Next, a connector-attached shielded cable 100 according to a second embodiment will be described with reference to Figures 6 to 8. The configuration of the connector-attached shielded cable 100 according to this embodiment differs from the configuration of the connector-attached shielded cable 1 of the first embodiment in that the cable 200 has a wire portion 700. In the following, the same components as those in the first embodiment will be assigned the same reference numerals and their description will be omitted, and only the components that differ from the first embodiment will be described.

[0080] 6 to 8, the cable 200 of the connector-attached shielded cable 100 according to the second embodiment has a wire portion 700. The wire portion 700 is a conductive metal conductor. The wire portion 700, together with the multiple coated wires 30, is covered by the shield portion 50.

[0081] The wire portion 700 includes a first wire portion 701 and a second wire portion 702 .

[0082] The first wire portion 701 is located on the one end 200a side of the cable 200, and is in contact with the contact portion G1 of the ground portion 17 of the first connector 11. The first wire portion 701 is in contact with the first shield portion 51 at least at one point in the extension direction. Therefore, the first wire portion 701 electrically connects the ground portion 17 of the first connector 11 and the first shield portion 51.

[0083] The second wire portion 702 is located on the other end 200b side of the cable 200, and is in contact with the contact portion G2 of the ground portion 18 of the second connector 12. The second wire portion 702 is in contact with the second shield portion 52 at least at one point in the extension direction. Therefore, the second wire portion 702 electrically connects the ground portion 18 of the second connector 12 and the second shield portion 52.

[0084] The first wire portion 701 and the second wire portion 702 are positioned apart from each other in the extension direction. That is, the second wire portion 702 is positioned apart from the first wire portion 701 on the other side in the extension direction.

[0085] As described above, in the connector-equipped shielded cable 200 of this embodiment, the cable 200 further has a conductive wire portion 700 having a first wire portion 701 located on one end 200a of the cable 200, electrically connected to the grounding portion 17 of the first connector 11, and in contact with the first shielding portion 51, and a second wire portion 702 located on the other end 200b, away from the first wire portion 701, in the other direction of extension of the cable 200, electrically connected to the grounding portion 18 of the second connector 12, and in contact with the second shielding portion 52.

[0086] In the above-described configuration, the first wire portion 701 and the second wire portion 702 are positioned apart from each other in the extension direction. As a result, when the first connector 11 is inserted into the connector insertion port P1 of the telecommunications device M1 and the second connector 12 is inserted into the connector insertion port P2 of the telecommunications device M2, even if a potential difference occurs between the ground portion 17 of the first connector 11, which is grounded at the first ground point E1, and the ground portion 18 of the second connector 12, which is grounded at the second ground point E2, no current flows between the first wire portion 701 and the second wire portion 702.

[0087] Moreover, high-frequency current generated in the first shield part 51 by electromagnetic waves or the like can be passed through the first wire part 701 to the ground part 17 of the first connector 11, and high-frequency current generated in the second shield part 52 can be passed through the second wire part 702 to the ground part 18 of the second connector 12. This allows the high-frequency current to be passed more reliably to the first ground point E1 and the second ground point E2.

[0088] Therefore, it is possible to more effectively suppress the generation of high-frequency noise caused by high-frequency current, while preventing the generation of noise caused by the current flowing between the first wire portion 701 and the second wire portion 702.

[0089] (Other embodiments) Although the embodiments of the present invention have been described above, the above-described embodiments are merely examples for carrying out the present invention. Therefore, the present invention is not limited to the above-described embodiments, and it is possible to appropriately modify the above-described embodiments within the scope of the spirit of the present invention.

[0090] In each of the above-described embodiments, the connector-equipped shielded cable 1, 100 is, for example, a LAN cable for information communication, but the connector-equipped shielded cable may be a cable for information communication other than a LAN cable.

[0091] In each of the above-described embodiments, the grounding portions 17 and 18 are thin conductive metal plates that cover part of the outer circumferential surface of the case 15. However, the grounding portions may have any configuration as long as they are configured to be groundable when inserted into the connector insertion port.

[0092] In each of the above-described embodiments, the shield portion 50 is a thin conductive metal film that covers the entire outer circumference of the multiple coated wires 30. However, the shield portion may have any configuration as long as it is conductive. For example, the shield portion may be a conductive sheet-like member, a mesh structure made of conductive fine fibers, or the like.

[0093] In each of the above embodiments, the capacitors 60 are arranged in a circumferential direction radially outward of the multiple coated wires 30. The multiple capacitors 60 are arranged in groups of four, spaced equally apart in the circumferential direction at 90-degree intervals. However, the number of capacitors may be more or less than four. The multiple capacitors do not have to be arranged at equal intervals in the circumferential direction. For example, the multiple capacitors may be arranged randomly in the circumferential direction. There may also be only one capacitor.

[0094] In each of the above-described embodiments, the exterior body 90 has an exposed portion 93 that exposes the end 51b of the first shield part 51 on the second shield part 52 side and the end 52a of the second shield part 52 on the first shield part 51 side. However, the exterior body may have an exposed portion that exposes at least a part of the first shield part other than the end on the second shield part side and at least a part of the second shield part other than the end on the first shield part side.

[0095] In each of the above embodiments, the exterior body 90 has a first exterior body 91, a second exterior body 92, and an exposed portion 93. However, the exterior body may have an exposed portion that exposes at least a portion of the first shielding portion and at least a portion of the second shielding portion relative to the exterior body. For example, the exterior body may have an exposed portion in which a portion of the exterior body main body that is not separated in the extension direction is cut out.

[0096] In each of the above embodiments, the exposed portion 93 has a size that can accommodate multiple capacitors 60. However, the exposed portion may also have a size that can accommodate at least one capacitor. The exposed portion may not be able to accommodate all of the multiple capacitors. When viewed radially of the capacitor, at least a portion of the exterior body and at least a portion of the capacitor may overlap.

[0097] In each of the above-described embodiments, the cables 20 and 200 have the insulating portion 80. However, the cables do not have to have the insulating portion, which can reduce the manufacturing costs of the connectorized cables.

[0098] In each of the above embodiments, the cable 20, 200 has a cover 99. However, the cable does not have to have a cover. The cable may have an exterior body that covers the first shield portion, the second shield portion, and the capacitor.

[0099] In each of the above embodiments, the cover 99 covers the capacitor 60, the insulator 80, the end 91b of the first exterior body 91 on the second exterior body 92 side, the end 51b of the first shield part 51 on the second shield part 52 side that is exposed from the first exterior body 91, the end 52a of the second shield part 52 on the first shield part 51 side that is exposed from the second exterior body 92, and the end 92a of the second exterior body 92 on the first exterior body 91 side. However, the cover does not have to cover at least one of the end of the first exterior body on the second exterior body side and the end of the second exterior body on the first exterior body side.

[0100] In each of the above embodiments, the frequency band that can pass through the capacitor 60 is, for example, a frequency band of 300 Hz or higher. However, the frequency band that can pass through the capacitor is not limited to 300 Hz or higher. The frequency band that can pass through the capacitor may be frequencies higher than 300 Hz or frequencies lower than 300 Hz. [Industrial Applicability]

[0101] The present invention can be used for shielded cables with connectors for information communication, such as LAN cables. [Explanation of symbols]

[0102] 1,100 Shielded cable with connector 11 First connector 12 Second connector 13 Multiple terminals (first connector) 14 Multiple terminals (second connector) 15 Case (first connector) 17 Grounding section (first connector) 18 Grounding part (second connector) G1 Contact (first connector) G2 contact part (second connector) 20,200 cables 20a, 200a One end (one end in the extension direction) 20b, 200b: other end (other end in the extension direction) 30 Multiple coated wires L coated solid wire 31 Core Wire 32 Covering 50 Shield part 51 First Shield Section 52 Second Shield Section 60 capacitors 62 Conductor 80 Insulation 90 Exterior body 91 First exterior body 92 Second exterior body 93 Exposed part 99 Cover 700 Wire Section 701 First Wire Section 702 Second Wire Section M1, M2 Telecommunications equipment P1, P2 connector insertion port E1 1st grounding point E2 2nd grounding point

Claims

1. a cable including a plurality of coated wires each having a coated core wire, a conductive shield portion covering the plurality of coated wires, and an insulating exterior body covering the shield portion; a first connector connected to one end of the cable and a second connector connected to the other end of the cable, the first connector having a grounding portion for grounding the shielding portion; A connector-attached shielded cable having The shield portion is a first shield portion located on the one end side of the cable and electrically connected to a ground portion of the first connector; a second shield portion located on the other end side of the cable apart from the first shield portion in the other extension direction of the cable and electrically connected to a ground portion of the second connector; and The cable a capacitor that electrically connects the first shield portion and the second shield portion; Shielded cable with connector.

2. 2. The connector-attached shielded cable according to claim 1, The cable The shielding member further includes an insulating portion having electrical insulation properties and covering the plurality of coated wires between the first shielding portion and the second shielding portion. Shielded cable with connector.

3. 2. The connector-attached shielded cable according to claim 1, The cable a plurality of the capacitors electrically connecting the first shield portion and the second shield portion in parallel; Shielded cable with connector.

4. 2. The connector-attached shielded cable according to claim 1, The cable a first wire portion located at the one end of the cable, electrically connected to a ground portion of the first connector, and in contact with the first shield portion; a second wire portion located on the other end side of the cable apart from the first wire portion in the other extension direction of the cable, electrically connected to a ground portion of the second connector, and in contact with the second shield portion; and further comprising a conductive wire having Shielded cable with connector.

5. 2. The connector-attached shielded cable according to claim 1, The exterior body is an exposed portion that exposes at least a portion of the first shield portion on the second shield portion side and at least a portion of the second shield portion on the first shield portion side, The capacitor is At least a part of the first shield part on the second shield part side and at least a part of the second shield part on the first shield part side, which are exposed at the exposed parts, are electrically connected to each other. Shielded cable with connector.

6. 6. The connector-attached shielded cable according to claim 5, The exposed portion is A size capable of accommodating the capacitor. Shielded cable with connector.

7. 4. The connector-attached shielded cable according to claim 3, The plurality of capacitors include: When the cable is viewed in the extension direction, the coated wires are arranged radially outward of the plurality of coated wires at equal intervals in the circumferential direction. Shielded cable with connector.

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