JP2009076363A - Connector connection structure of multi-core coaxial cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector connection structure in which all the shielding conductors including a one-lot shield part of a multi-core coaxial cable can be certainly connected to a grounding part of a connector and highly reliable connection can be performed without affecting the connector outside appearance with respect to grounding connection of the one-lot shield part same as the outer conductor of each coaxial wire, and which is superior in application to the connector. <P>SOLUTION: A linear treated portion of a one-lot shield part 20 is arranged in parallel together with coaxial wires 10 and is pinched between grounding bars 30 together with the exposed parts of the outer conductors 11 of the coaxial wires 10 and is integrated with the grounding bars 30 to be connected to the grounding part of the connector 50 including the grounding bar 30, and all the shielding conductors in the cable are ground connected in a lot. Thereby, even the connector of a general grounding bar corresponding type having no special connection portion of the one-lot shield part, the one-lot shield part 20 can be ground connected and connection reliability can be greatly improved. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a connector connection structure for connecting a cable shield conductor to a connector ground portion when a connector is provided at a cable terminal portion, and more particularly, to each coaxial cable at a ground portion of a flat connector for a multi-core cable. The present invention relates to a connector connection structure of a multi-core coaxial cable that can reliably connect external shields and collective shielding portions of cables.

  In recent years, in various electronic devices and devices, the signal band exchanged by signal lines tends to be higher due to the digitization and multiplexing of signal transmission. Has also increased. Under these circumstances, in order to increase the reliability of signal transmission, a multi-core coaxial cable that improves handling and saves space as a single cable by consolidating a number of ultra-thin coaxial cables into a single coaxial cable is used. More examples are being used. The connection between such a multi-core cable and a terminal of the device is generally made via a connector in terms of terminal processing. However, in the connector provided at the cable terminal, the multi-core cable is connected. When connecting the outer conductor of each coaxial line of the cable to the ground part of the connector, use the ground bar to integrate the outer conductors of each coaxial line in a flat state, and connect the outer conductor to the ground part via the ground bar. The connection method is often used. One example is disclosed in Japanese Patent Application Laid-Open No. 2001-307822.

In addition, as a multi-core coaxial cable, in order to further improve noise resistance performance, a cable that has a metal shield or foil that collectively shields all coaxial lines on the outer layer of the cable is used. Yes.
JP 2001-307822 A

  The ground connection of each coaxial line outer conductor in a conventional multi-core coaxial cable has a configuration shown in the above-mentioned patent document. However, with regard to the collective shielding part of the cable, conventionally, the metal surface that becomes the ground part of the connector is used. In addition to soldering directly or via a joint line, a crimp-compatible connector was connected by crimping. However, the soldering of the collective shielding portion to the connector metal surface has a problem that it is inferior in terms of appearance and reliability. In addition, the collective shielding portion has a problem that only the special connector corresponding to the crimping can be attached and the general application cannot be performed.

  The present invention has been made to solve the above-mentioned problems, and can securely connect all the shielding conductors including the collective shielding portion of the multi-core coaxial cable to the ground portion of the connector, and each of the ground connections of the collective shielding portion. It is an object of the present invention to provide a connector connection structure of a multi-core coaxial cable that can be connected without affecting the appearance of the connector with high reliability like the outer conductor of the coaxial line and is excellent in applicability to the connector.

  The connector connection structure of the multi-core coaxial cable according to the present invention is such that the outer conductor of each coaxial line in the multi-core coaxial cable and the collective shielding part that collectively shields the coaxial line are electrically connected to the ground part of the connector. In the connector connection structure to be connected to each other, the coaxial wires are arranged in parallel in a planar shape with the outer conductor exposed, and the end portions of the collective shielding portion are arranged in a linear shape and aligned with the coaxial wires. The linear processing portions of the conductor exposed portion and the collective shielding portion are integrated by sandwiching them between two ground bars, and the ground bars are arranged in the connector while being electrically connected to the ground portion of the connector.

  As described above, according to the present invention, the linearly processed portion of the end portion of the collective shielding portion is arranged in parallel with the coaxial line, and the outer conductor exposed portion of the coaxial line is put together between the ground bars and integrated with the ground bar.・ Connecting to the ground part of the connector together with the ground bar, and connecting all the shield conductors in the cable together to the ground, it is not a general ground bar compatible type that does not have a special joint for the shield part With this connector, the collective shielding portion can be grounded and the connection reliability can be greatly improved. Further, the connecting portion between the collective shielding portion and the connector is accommodated in the connector, so that the compactness can be achieved and the connector appearance is not adversely affected.

  The connector connection structure of the multi-core coaxial cable according to the present invention is electrically connected to a predetermined portion of the collective shielding portion away from the outer conductor exposed portion of the coaxial line as a linear processing portion of the collective shielding portion, if necessary. An electric wire of a predetermined length connected to is used.

  As described above, according to the present invention, the linearly processed portion of the collective shielding portion is an electric wire, the terminal portion reaching the connector of the collective shielding portion is replaced with the electric wire, and the electric wire is aligned with the coaxial line and integrated with the ground bar. In addition, by connecting to the connector side, it can be integrated with the ground bar by the same handling as the coaxial line, and there is no need to perform complicated processing such as twisting the collective shielding part into a thin line Therefore, the connector connection of the cable terminal can be performed efficiently.

  Moreover, the connector connection structure of the multi-core coaxial cable according to the present invention is such that the linearly processed portion of the collective shielding portion has substantially the same diameter as the outer conductor exposed portion of the coaxial wire, if necessary. .

  As described above, according to the present invention, the linearly processed portion of the collective shielding portion has substantially the same diameter as the outer conductor of the coaxial line, and the linearly processed portion and the coaxial conductor are arranged side by side so that the linearly processed portion and the exposed outer conductor portion are grounded. When sandwiched between the bars, the ground bar is in contact with the linear processing part and the outer conductor evenly without any gaps, so that integration by soldering with the ground bar can be performed with high reliability. Connection can be made accurately and reliably.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an explanatory diagram of a terminal processing state of a multi-core coaxial cable in the connector connection structure according to the present embodiment. FIG. 2 is a front view and an end view of a ground bar attached state to the cable terminal in the connector connection structure according to the present embodiment. FIG. 3 is an explanatory diagram of the internal state of the connector in the connector connection structure according to the present embodiment, and FIG. 4 is an explanatory diagram of the connector connection state of the multi-core coaxial cable in the connector connection structure according to the present embodiment.

  In each of the above drawings, the connector connection structure according to the present embodiment includes an outer conductor 11 of a large number of coaxial wires 10 in the multi-core coaxial cable 1 and a collective shielding portion 20 that collectively covers and shields the coaxial wires 10. The ground bar 30 is integrated with the manufactured ground bar 30 and is disposed in the connector 50 while being electrically connected to the ground part 51 of the connector 50.

  The multi-core coaxial cable 1 has a configuration in which the periphery of a large number of coaxial wires 10 is formed so as to be covered with a metal batch shielding portion 20 and an insulating sheath 21. Although only four coaxial lines 10 are shown in the cable, the number of coaxial lines 10 is not limited to this, and includes a larger number of coaxial lines 10.

  The coaxial wire 10 is a known configuration in which the inner conductor 12 is covered with an outer conductor 11 made of a metal braid or the like, and further covered with an outer jacket 14, and detailed description thereof is omitted. . The insulator layer 13 of the coaxial line 10 is made of a material that can withstand the heat applied to the outer conductor 11 when the outer conductor 11 is integrated with the ground bar 30 by soldering.

  The collective shielding portion 20 is a metal braid and / or metal foil that can shield the coaxial wires 10 in a lump, and the end of the collective shielding portion 20 is processed into a line shape, in this embodiment, the end portion of the collective shielding portion 20 itself. As it is, or after removing a part thereof, it is twisted thinly to form a linear body. The diameter of the linearly processed portion of the collective shielding portion 20 is preferably the same as the exposed portion of the outer conductor 11 of the coaxial line 10.

  The ground bar 30 is a thin and thin metal plate coated with solder on one side or attached with sheet-like solder, and is used for collective ground connection of the coaxial line outer conductor 11 in the flat connector 50. The detailed description is omitted. With respect to the ground bar 30, the coaxial wires 10 are arranged in parallel with each other in a state where the outer conductor 11 is exposed, and the linear processing portions of the collective shielding portion 20 are aligned with the coaxial wires 10. This is a mechanism in which the exposed portion of the outer conductor 11 of the coaxial line 10 and the linearly processed portion of the collective shielding portion 20 are brought into an electrically connected state by the two ground bars 30 sandwiched between them.

  Next, a connector connection process to which the cable connector connection structure based on the above configuration is applied will be described. The end of the multi-core coaxial cable 1 is processed in advance so as to correspond to the connector 50, and the collective shielding part 20 is separated from the periphery of the coaxial line 10 so that a necessary length is left. It is assumed that the conductor 11 and the inner conductor 12 are exposed for a necessary length. First, the coaxial wires 10 of the multi-core cable 1 are arranged in parallel and in a plane so that the exposed outer conductors 11 and inner conductors 12 are aligned, and the end portions of the collective shielding portion 20 are processed into a linear shape. In other words, the end portions are twisted to form a linear body having substantially the same diameter as the exposed portion of the outer conductor 11 of the coaxial line 10, and then arranged in parallel with the coaxial line 10.

  When the exposed portion of the outer conductor 11 of the coaxial cable 10 and the linearly processed portion of the collective shielding portion 20 are sandwiched between the two ground bars 30 with the solder placement surface facing each other, the ground bar 30 is heated to a predetermined temperature. The ground bar 30 is heated by contacting the means, the solder located on the opposite surface side of the two ground bars 30 is melted, and the ground bar 30, the exposed portion of the external conductor 11 and the collective shielding portion 20 are soldered and integrated. To do.

  Thus, when the ground bar 30 is integrated with the exposed portion of the outer conductor 11 of the coaxial line 10 and the linearly processed portion of the collective shielding portion 20 in an electrically connected state, the ground in the connector 50 in the disassembled state before assembly is provided. The ground bar 30 and the cable terminal are disposed in the connector 50 by bringing the ground bar 30 into contact with the metal part forming the ground portion 51 formed so that the bar 30 can contact.

  In the connector 50, the ground bar 30 is abutted and connected to the ground portion 51 partially appearing inside, and the inner conductor 12 of each coaxial line 10 is similarly connected to each contact portion 52 partially appearing inside. Are in contact with each other, and are connected and integrated by soldering or the like.

  The ground bar 30 is finally fixed and integrated with the ground portion 51 in an electrically connected state by soldering or the like. In the completed form in which the connector 50 is assembled, the ground bar 30 and the cable terminal are accommodated inside the connector 50 and are not visible from the outside.

  Thus, when connecting the connectors of the collective shielding part 20 through the ground bar 30, the same connection as that of the outer conductor 11 of the coaxial line 10 is possible, and there is no need to use a special terminal or connector. High connection reliability can be obtained even with general-purpose connectors compatible with the above.

  Thus, in the connector connection structure of the multi-core coaxial cable according to the present embodiment, the linear processing portion at the end of the collective shielding portion 20 is arranged in parallel with the coaxial wire 10, and the exposed portion of the outer conductor 11 of the coaxial wire 10 Since it is put together between the ground bars 30 and integrated with the ground bar 30 and connected to the ground part 51 of the connector 50 together with the ground bar 30, all shield conductors in the cable are collectively connected to the ground. Even with a general ground bar-compatible connector that does not have a connection portion for the shielding part 20, the collective shielding part 20 can be grounded and the connection reliability can be greatly improved. In addition, the connecting portion between the collective shielding portion 20 and the connector 50 is accommodated in the connector 50, so that the compactness can be achieved and the connector appearance is not adversely affected.

  In the connector connection structure of the multi-core cable according to the embodiment, as a linear treatment of the collective shielding unit 20, the end of the collective shielding unit 20 that is a metal braid and / or metal foil is twisted as it is. Although it is configured to be processed into a linear shape to obtain a metal linear body as a linear processing portion, the outer conductor 11 of the coaxial line 10 is also provided at a predetermined portion of the collective shielding portion away from the outer conductor exposed portion of the coaxial line. Wires such as ultra-fine insulated wires that have a conductor part with the same diameter as the exposed part are connected by soldering etc., and this is lined up with the coaxial line as a linear processing part, and between the ground bar and the exposed part of the coaxial conductor It is also possible to use a structure that is integrated by sandwiching and used for ground connection with the connector, and it is not necessary to perform complicated processing on the collective shielding part, and the connector connection of the cable terminal can be performed efficiently. It becomes a.

It is terminal processing state explanatory drawing of the multi-core coaxial cable in the connector connection structure which concerns on one Embodiment of this invention. It is the front view and end elevation of a ground bar attachment state to the cable terminal in the connector connection structure concerning one embodiment of the present invention. It is a connector internal state explanatory view in the connector connection structure concerning one embodiment of the present invention. It is connector connection state explanatory drawing of the multi-core coaxial cable in the connector connection structure which concerns on one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Multi-core coaxial cable 10 Coaxial line 11 Outer conductor 12 Inner conductor 13 Insulator layer 14 Outer cover 20 Collective shielding part 21 Insulation cover 30 Ground bar 50 Connector 51 Ground part 52 Contact part

Claims (3)

In the connector connection structure that electrically connects the outer conductor of each coaxial line in the multi-core coaxial cable and the collective shielding part that collectively shields the coaxial line to the ground part of the connector,
The coaxial wires are arranged in parallel in a planar state with the outer conductor exposed, and the end portions of the collective shielding portion are lined with the coaxial wires in a state of being processed into a linear shape, and the outer conductor exposed portion and the collective shielding portion of the coaxial line are arranged. A connector connection structure for a multi-core coaxial cable, wherein the linear processing portion is integrated by sandwiching between two ground bars, and the ground bar is disposed in the connector while being electrically connected to the ground portion of the connector. . In the connector connection structure of the multi-core coaxial cable according to claim 1,
A multi-core coaxial cable having a predetermined length of electric wire electrically connected to a predetermined portion of the collective shielding portion separated from the exposed portion of the outer conductor of the coaxial wire as the linear processing portion of the collective shielding portion. Connector connection structure. In the connector connection structure of the multi-core coaxial cable according to claim 1 or 2,
A connector connection structure for a multi-core coaxial cable, wherein the linearly treated portion of the collective shielding portion has substantially the same diameter as the outer conductor exposed portion of the coaxial line.

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