JP6583481B2 - Communication connector - Google Patents

Description

  The present invention relates to a communication connector.

  Conventionally, as a communication connector, for example, one disclosed in Patent Document 1 is known. Patent Document 1 describes an electrical connector that can receive four USB plug connectors. This electrical connector includes a housing and a plurality of electrical contacts made of metal bent into an L shape.

Special table 2008-507110 gazette

  By the way, the thing of the structure by which each edge part of a some electric wire is each connected with respect to each electrical contact in an electrical connector is known. Moreover, what was collectively enclosed by the shield layer and the insulation coating is known as a some electric wire. When connecting such an electric wire to an electrical contact, it is necessary to peel off the shield layer and the insulation coating at the end of the electric wire. Thereby, in the edge part of an electric wire, the part which is not covered with the shield layer arises, and impedance changes with respect to the part covered with the shield layer. At the impedance change point, signal reflection occurs, and there is a concern that the communication quality may deteriorate.

  The technology disclosed in the present specification has been completed based on the above-described circumstances, and an object thereof is to suppress a situation in which communication quality is deteriorated.

  In order to solve the above problems, a method for manufacturing a communication connector according to a technique disclosed in this specification includes an electric wire in which a conductor portion is covered with an insulating layer, and a conductive shield member that surrounds the electric wire. The cutting step of cutting the insulating layer by irradiating the insulating layer of the shielded electric wire with a laser beam, and the end of the conductor portion by removing the terminal portion of the cut insulating layer And a connecting step of connecting the terminal portion of the conductor portion exposed in the removing step to a terminal accommodated in a housing.

  In the technique disclosed in this specification, the insulating layer is cut using laser light. If the insulating layer is cut using a wire stripper or the like, it is necessary to directly hold the insulating layer with the wire stripper, and it is necessary to peel off the shield member to expose the insulating layer. If it is a laser beam, the situation which peels a shield member in order to hold | maintain an insulating layer can be suppressed. For this reason, the situation in which the part which is not covered with the shield member in an electric wire can be suppressed, and the fall of communication quality can be suppressed.

  The shielded electric wire may include a pair of the electric wires, and the pair of electric wires may be surrounded by the shield member in a state of forming a twisted pair wire by twisting each other. In the technique disclosed in the present specification, it is not necessary to peel off the shield member that surrounds the twisted pair wire. Therefore, it is possible to suppress a situation where the twisted pair wire is untwisted.

Next, in order to solve the above-described problem, a communication connector according to the technology disclosed in the present specification includes a plurality of electric wires through which a communication signal is transmitted, and an electric wire connection portion connected to each of the electric wires. A plurality of terminals having a housing main body that accommodates the plurality of terminals, and an extending portion extending backward from a rear end of the housing main body is provided, and the extending portion is connected to the electric wire of each terminal. A housing having a plurality of groove-like placement portions arranged so that the portions can be placed; a shield layer that collectively covers the plurality of electric wires; and an insulating coating that covers an outer periphery of the shield layer. The terminal-side end of the conductive layer is an exposed portion that is not covered with the shield layer and the insulating coating, and is a member that is separate from the shield layer and surrounds at least one of the plurality of wires. Sex shield material The mounting portion includes a bottom surface and a pair of groove walls rising from both side edges of the bottom surface, and left and right according to the number of the terminals on each of the top surface and the bottom surface of the extension portion. The shield member is interposed between the insulating coating and the one electric wire and surrounds the exposed portion of the one electric wire.

  According to the technique disclosed in this specification, in the electric wire, the end portion on the terminal side is an exposed portion that is not covered with the insulating coating. Thereby, each electric wire can be easily bent in an edge part, and each terminal and each electric wire can be connected easily. Here, in one electric wire, the portion covered with the insulating coating and the exposed portion are covered with the shield member. Thereby, in one electric wire, the situation where impedance changes between the portion covered with the insulation coating and the exposed portion can be suppressed, and the deterioration of communication quality can be suppressed.

  According to the technology disclosed in this specification, it is possible to suppress a situation in which communication quality is deteriorated.

The perspective view which shows the connector for communication which concerns on one Embodiment of the technique disclosed by this specification. The perspective view which shows the connector for communication of the state which removed the 2nd shield case The top view which shows the connector for communication of the state which removed the 2nd shield case The perspective view which shows the connector for communication of the state which removed the 2nd shield case and the shield electric wire Front view showing communication connector The top view which shows the connector for communication of the state which removed the 2nd shield case and the shield electric wire Plan view showing the cutting process Plan view showing the removal process Sectional view showing communication connector

  One embodiment of the technique disclosed in this specification will be described with reference to FIGS. The communication connector 10 according to the present embodiment is mounted on a vehicle such as an electric vehicle or a hybrid vehicle. And wired communication paths between in-vehicle electrical components. In the following description, with respect to the front-rear direction (Z axis), the left side in FIG. 3 is the front and the right side is the rear side, and the left and right direction (X axis) is the upper side in FIG. The vertical direction (Y axis) will be described with reference to the direction of FIG.

  As shown in FIG. 2, the communication connector 10 of the present embodiment accommodates a shielded electric wire 17, a plurality of terminals 20 connected to the electric wires 11 to 14 constituting the shielded electric wire 17, and a plurality of terminals 20. And a shield case 50 that covers each of the electric wires constituting the housing 30 and the shielded electric wires 17.

(Shielded wire 17)
The shielded electric wire 17 is an electric wire capable of high-speed communication of 1 GHz or more, and as shown in FIGS. 2 and 3, a plurality of electric wires 11 to 14 for transmitting communication signals and a plurality of electric wires 11 to 11 are transmitted. 14 and a shield layer 18 (see also FIG. 9) made of a braided wire formed by braiding metal thin wires, and an insulation coating 15 (see FIG. 9) that covers the outer periphery of the shield layer 18 and is made of an insulating synthetic resin. Sheath). Further, a filling member (not shown) made of an insulating thread, paper tape, or the like is filled between the electric wires 11 to 14 and the shield layer 18.

  The electric wire 11 is an electric wire of a differential pair cable with a shield and a drain wire. As shown in FIG. 9, the electric wire 11 includes a pair of electric wires 11A and 11B and a drain wire 11C. The pair of electric wires 11A and 11B are adjacent to each other as shown in FIG. 9, and constitute a twisted pair wire by twisting each other. The electric wires 11 are, for example, USB (Universal Serial Bus) 3.0 standard electric wires, and two sets are provided.

  The electric wire 12 is a communication electric wire having a lower maximum data transfer rate than the communication using the electric wire 11, and is a twisted pair cable without shielding. As shown in FIG. 2, the electric wire 12 includes a pair of electric wires 12 </ b> A and 12 </ b> B and is a USB 2.0 standard electric wire. The pair of electric wires 12 </ b> A and 12 </ b> B constitutes a twisted pair wire by being twisted together in a portion covered with the insulating coating 15.

  The electric wire 13 is one power line connected to a power source (not shown), and the electric wire 14 is one ground line connected to the ground. Thus, the shielded electric wire 17 of the present embodiment includes two sets of electric wires 11 (electric wires 11A and 11B, drain wires 11C), one set of electric wires 12 (electric wires 12A and 12B), an electric wire 13, and an electric wire 14. , And is composed of a total of 10 electric wires.

  As shown in FIG. 2, in the present embodiment, one of the two sets of electric wires 11 and the electric wires 13 and 14 are arranged in a horizontal row, and below this, the other electric wire 11 and The electric wires 12 are arranged in a horizontal row. Moreover, the one electric wire 11 and the other electric wire 11 are arranged so that it may become a diagonal position mutually. In FIG. 9, only the upper electric wire 11 is shown, and the other electric wires are not shown.

  Terminal portions (end portions on the terminal 20 side) of the electric wires 11 to 14 are exposed portions that are not covered with the shield layer 18 and the insulating coating 15. Thereby, each electric wire 11-14 can be bent independently in a terminal part, respectively, and can connect to each terminal 20 easily.

  Each of the electric wires 11 to 14 excluding the drain wire 11C is obtained by coating a conductor portion made of a metal wire with an insulating layer 26 (see FIG. 7) made of an insulating synthetic resin. Part), the insulating layer 26 is peeled off, and the conductor part 16 (see FIG. 8) connected to the terminal 20 is exposed. The drain line 11C is constituted only by the conductor part 16 made of a metal line. The drain line 11C may be composed of a conductor portion and an insulating layer.

  As shown in FIG. 9, the electric wire 11 </ b> A (at least one electric wire among the plurality of electric wires), the electric wire 11 </ b> B, and the drain wire 11 </ b> C are surrounded by the shield member 61. The shield member 61 is a thin film having conductivity, and for example, a metal tape called Alpet (registered trademark) can be used. Alpet is formed by laminating aluminum foil and polyethylene terephthalate via polyvinyl chloride (PVC) or the like and molding it into a tape shape. The drain wire 11 </ b> C is arranged in contact with the inner peripheral surface of the shield member 61. Thereby, the drain line 11C and the shield member 61 are electrically connected. The shield member 61 is interposed between the insulating coating 15, the electric wires 11A and 11B, and the drain wire 11C, and surrounds the exposed portions 19A, 19B, and 19C of the electric wires 11A and 11B and the drain wire 11C.

(Terminal 20)
As shown in FIG. 4, the terminal 20 has a terminal connecting portion 21 having a rectangular tube shape on the front side. On the rear side of the terminal connection portion 21, an electric wire connection portion 23 connected to the conductor portions of the electric wires 11 to 14 is integrally formed. The terminal connection portion 21 is provided with an elastic contact piece 22 (see FIG. 5) connected to the male terminal of the mating connector. The electric wire connection part 23 has the bottom plate 24, and the conductor part of the electric wires 11-14 is electrically connected with the electric wire connection part 23 by soldering, welding, etc. to the bottom plate 24, for example.

(Housing 30)
The housing 30 is made of an insulating synthetic resin. As shown in FIG. 4, a housing body 31 in which the terminal connection portions 21 of the terminals 20 are accommodated, and a thickness dimension is reduced behind the housing body 31. And an extending portion 36 extending. The housing body 31 has a rectangular parallelepiped shape and has a cavity 32 in which the terminal 20 is accommodated. Five cavities 32 arranged in the left-right direction are provided in two stages in the up-down direction.

  Each cavity 32 has a rectangular cross section corresponding to the outer peripheral shape of the terminal connection portion 21, and extends in the front-rear direction according to the length of the terminal connection portion 21. A front stop wall (not shown) that restricts the forward movement of the terminal 20 is formed at the front end of the cavity 32.

  The extension part 36 extends rearward from the rear end of the housing body 31. As shown in FIGS. 4 and 6, the extending portion 36 has a plurality of groove-like placement portions 37 in which the wire connection portions 23 of the respective terminals 20 are arranged to be able to be placed. The mounting portion 37 has a bottom surface 37A and a groove wall 37B rising from both side edges of the bottom surface 37A, and is formed on the upper surface and the lower surface of the extending portion 36 side by side in accordance with the number of terminals 20. Yes.

(Shield case 50)
As shown in FIG. 1, the shield case 50 includes a first shield case 51 that covers the housing body 31, a second shield case 57 that is disposed behind the first shield case 51 and covers the plurality of electric wires 11 to 14, It has. The shield case 50 is electrically connected to the ground. The first shield case 51 is made of, for example, a metal such as aluminum or an aluminum alloy. As shown in FIG. 2, the first shield case 51 has a rectangular tube-shaped housing surrounding portion 52 that surrounds the housing 30 and the second shield case 57. And a connection portion 54 electrically connected.

  Locked portions 53 made of elastically deformable bending pieces are provided on the left and right side portions of the housing surrounding portion 52. When the first shield case 51 is fitted into the housing 30 from the rear side of the housing 30, the locked portion 53 is locked to a locking portion (not shown) formed by cutting out the side surface of the housing 30. The connection portion 54 extends rearward from the rear end of the side surface portion of the housing surrounding portion 52, and is electrically connected to the second shield case 57 by contacting the inner surface of the second shield case 57.

  The second shield case 57 is made of a metal such as aluminum or aluminum alloy, and as shown in FIG. 1, a box-shaped wire shield portion 58 having an opening on the front side, and a cylindrical shield that is externally fitted to the shield wire 17. The connection part 59 is provided. The wire shield part 58 surrounds the entire plurality of wires 11 to 14. The shield connection part 59 is connected to the shield layer 18 that is folded back to the outside of the insulating coating 15 at the terminal part of the shielded electric wire 17, for example. The shield connection part 59 and the shield layer 18 can be fixed by, for example, welding or pressure bonding.

  Next, a method for manufacturing the communication connector 10 will be described. First, as shown in FIG. 7, in the shielded electric wire 17, the end portions of the shield layer 18, the insulating coating 15, and the shield member 61 are peeled to expose the end portions on the terminal 20 side of the electric wires 11 to 14. Further, the end of the shield layer 18 is folded back to the outer peripheral surface of the insulating coating 15. Here, as for the shield member 61, the length of peeling is made smaller than that of the insulating coating 15. Thereby, the terminal portion of the shield member 61 is exposed.

(Cutting process)
Next, the shielded electric wire 17 is fixed to a mounting table (not shown), and the laser light emitting device 71 emits the laser light L1. The laser beam emitting device 71 includes a laser oscillator (not shown) and a converging lens that converges the laser beam from the laser oscillator and emits the laser beam to the outside. As the laser beam emitting device 71, for example, a carbon dioxide laser can be exemplified, but the laser beam emitting device 71 is not limited to this.

  Next, the laser beam emitting device 71 is moved along the X-axis direction, and the laser beam L1 emitted from the laser beam emitting device 71 is sequentially applied to the insulating layers 26 of the electric wires 11 to 14. At this time, each insulating layer 26 is cut | disconnected over the perimeter by irradiating the laser beam L1 from the upper direction and the downward direction of each electric wire 11-14, respectively. In addition, the cutting line X1 of each insulation layer 26 at this time shall be along the direction orthogonal to the extending direction of each electric wires 11-14 as shown, for example by the dashed-two dotted line of FIG.

(Removal process)
Next, the terminal portion 26A (see FIG. 7) of each cut insulating layer 26 is pulled to the left in FIG. 7 using a tool, and the terminal portion 26A is removed. Thereby, as shown in FIG. 8, it will be in the state which the terminal part 16A of the conductor part 16 of each electric wire 11-14 exposed.

(Connection process)
Subsequently, as illustrated in FIG. 3, the terminal portions 16 </ b> A of the conductor portions 16 of the electric wires 11 to 14 are connected to the electric wire connection portions 23 of the terminals 20 by soldering, welding, or the like. Thereafter, the first shield case 51 is attached to the housing 30, and the second shield case 57 is attached to the first shield case 51. Thereby, the communication connector 10 is completed.

  Next, the effect of this embodiment will be described. In this embodiment, the insulating layer 26 of the electric wires 11-14 is cut | disconnected using the laser beam. If the insulating layer 26 is cut using a wire stripper or the like, the insulating layer 26 needs to be held by the wire stripper, and the shield member 61 needs to be peeled off to expose the insulating layer 26. If it is a laser beam, the situation which peels the shield member 61 in order to hold | maintain the insulating layer 26 can be suppressed.

  More specifically, when the insulating layer 26 is cut using a wire stripper or the like, it is difficult to completely cut the insulating layer 26 over the entire circumference. Therefore, in order to remove the terminal portion 26A of the insulating layer 26, both sides of the cutting line X1 (see FIG. 7) are held in the insulating layer 26, and a part of the insulating layer 26 is torn off by pulling the terminal portion 26A. There is a need. For this purpose, the exposed portion 61A of the shield member 61 needs to be peeled off.

  In this embodiment, the insulating layer 26 can be burned out over the entire circumference by using laser light. For this reason, the terminal part 26A can be easily removed by gripping only the terminal part 26A with a tool and pulling it. For this reason, it is not necessary to peel the exposed portion 61A, and it can be left. Thereby, the situation where the part which is not covered with the shield member 61 in the electric wire 11 arises can be suppressed, and the fall of communication quality can be suppressed.

  The shielded electric wire 17 includes a pair of electric wires 11A and 11B, and the pair of electric wires 11A and 11B are surrounded by the shield member 61 in a state of forming a twisted pair wire by twisting each other. In this embodiment, since it is not necessary to peel off the shield member 61 surrounding the twisted pair wire, it is possible to suppress a situation where the twisted wire can be untwisted.

  In addition, the communication connector 10 of the present embodiment includes a plurality of electric wires 11, 12, 13, and 14 through which communication signals are transmitted, and a plurality of terminals 20 that are connected to the electric wires 11, 12, 13, and 14. , A housing 30 that accommodates the plurality of terminals 20, and an insulating coating 15 that collectively covers the plurality of electric wires 11, 12, 13, and 14, and the terminal-side ends of the electric wires 11, 12, 13, and 14 are The conductive shield member 61 is an exposed portion that is not covered with the insulation coating 15 and surrounds the electric wire 11, and the shield member 61 is interposed between the insulation coating 15 and the electric wires 11A and 11B. A characteristic is that the exposed portions 19A, 19B, and 19C of the electric wires 11A and 11B and the drain wire 11C are surrounded.

  According to the present embodiment, in the electric wires 11, 12, 13, and 14, end portions on the terminal side are exposed portions that are not covered with the insulating coating 15. Thereby, each electric wire 11, 12, 13, 14 can be easily bent in an edge part, and each terminal 20 and each electric wire 11, 12, 13, 14 can be connected easily. Here, in the electric wires 11 </ b> A and 11 </ b> B and the drain wire 11 </ b> C, the portions covered with the insulating coating 15 and the exposed portions 19 </ b> A, 19 </ b> B, and 19 </ b> C are covered with the shield member 61. Thereby, in electric wire 11A, 11B, the situation where an impedance changes between the part covered with insulating coating 15 and exposed parts 19A, 19B can be controlled, and the fall of communication quality can be controlled.

  If the exposed portion 61 </ b> A of the shield member 61 is peeled off, the exposed portions 19 </ b> A and 19 </ b> B are directly opposed to the wire shield portion 58 of the shield case 50. As a result, in the exposed portions 19A and 19B, the distance from the ground becomes larger than the other portions, and the impedance changes. In this embodiment, since it is not necessary to peel the exposed portion 61A of the shield member 61, such a situation can be suppressed.

  The shield member 61 is electrically connected to the drain line 11C. With such a configuration, the influence of noise can be further reduced by electrically connecting the drain line 11C to the ground.

<Other embodiments>
The technology disclosed in the present specification is not limited to the embodiment described with reference to the above description and drawings, and includes, for example, the following modes.
(1) The material of the shield member 61 is not limited to what was illustrated by the said embodiment, It can change suitably.
(2) The number and arrangement of the wires constituting the shielded wire 17 are not limited to those exemplified in the above embodiment, and can be changed as appropriate.
(3) In the above-described embodiment, the configuration in which the electric wires 11A and 11B and the drain wire 11C are collectively surrounded by the shield member 61 is exemplified, but the present invention is not limited to this. For example, only the electric wires 11 </ b> A and 11 </ b> B may be surrounded by the shield member 61.
(4) In the above-described embodiment, the configuration in which the pair of electric wires 11A and 11B constituting the twisted pair is surrounded by the shield member 61 is illustrated, but the present invention is not limited to this. It is sufficient that at least one electric wire is surrounded by the shield member 61.

10: Communication connectors 11A, 11B: A pair of wires (at least one wire among a plurality of wires)
15: Insulation coating 16: Conductor portion 16A: End portion of conductor portion 17: Shielded wire 19A, 19B, 19C: Exposed portion 20: Terminal 26: Insulating layer 26A: End portion of insulating layer 30: Housing 61: Shield member

Claims (1)

A plurality of electric wires through which signals for communication are transmitted;
A plurality of terminals having a wire connecting portion connected to each of the wires;
The housing has a housing main body that accommodates the plurality of terminals, and an extending portion that extends rearward from the rear end of the housing main body is provided. The extending portion can mount the electric wire connecting portion of each terminal. A housing having a plurality of groove-shaped placement portions arranged;
A shield layer that collectively covers the plurality of electric wires ;
An insulating coating covering the outer periphery of the shield layer ,
The end of the electric wire on the terminal side is an exposed portion that is not covered with the shield layer and the insulating coating,
A conductive shield member that is a separate member from the shield layer and surrounds at least one of the plurality of wires;
The mounting portion includes a bottom surface and a pair of groove walls rising from both side edges of the bottom surface, and is formed side by side on each of the upper surface and the lower surface of the extending portion according to the number of the terminals. Has been
The shield member is a communication connector that is interposed between the insulating coating and the one electric wire and surrounds the exposed portion of the one electric wire.

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