JP2007335395A - Network cable, and manufacturing method of network cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve productivity of a network cable and especially improve a connecting work of a cable connector. <P>SOLUTION: In the network cable 80 composed of a cable connector 70 fixed with an end of a twisted pair cable, each of the cables is exposed by removing a cable sheath and a block 60 integrally containing cables arranged in parallel in a predetermined order is formed, and the block 60 is inserted into a socket of the cable connector 70 and a connector plug 701 of the cable connector 70 is bitten in the cable sheath, and the connector plug 701 and a core wire of the cable are electrically conducted. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a network cable and a method for manufacturing the network cable.

  A network cable (LAN cable) is configured, for example, by connecting a connector for a network cable (RJ-45 type 8-pole connector, hereinafter abbreviated as a cable connector) to both ends of a twisted pair cable. The twisted pair cable has a configuration in which electric wires that are electrically paired are provided for every two wires, and a twisted pair cable of four to eight wires is used as a recent network cable. There are two types of twisted pair cables: STP (Shielded Twisted Pair) with electromagnetic shielding (aluminum shield, net sheathed shield, etc.) and UTP (Unshielded Twisted Pair) without electromagnetic shielding. In such a network cable, for example, as seen in Patent Document 1, the wires of each twist cable exposed by peeling the cable sheath are aligned in a predetermined order and inserted from the connector end, and a connector plug (connection terminal) is pierced into the wire. It is made by breaking the wire sheath and making electrical contact with the core wire or single core wire through the connector plug.

Japanese Utility Model Publication No. 63-079077 (4th page, Fig. 2)

  In recent years, networks have been constructed in ordinary homes and small and medium enterprises, and the demand for network cables has increased. However, as described above, the manufacture of network cables is difficult to automate the mounting of cable connectors, so it still relies on manual work, and it is difficult to increase the supply amount. In particular, the category 7 network cable used for the next generation high-speed network has a large twisted-pair cable (7.4mm) and a thick built-in wire (1.35mm), which requires time and labor to install the cable connector by hand. Has been pointed out. Therefore, in order to improve the productivity of the network cable, in particular, in order to improve the cable connector installation work, it was studied.

  As a result of the study, in the network cable configured by attaching the cable connector to the end of the twisted pair cable, the cable sheath is peeled off to expose the wires of the twisted cable, and the wires are arranged side by side in a predetermined arrangement order. Is a network cable in which the block is inserted into a socket of a cable connector, the block of the cable connector is inserted into an electric wire sheath, and the connector plug is connected to the core of the electric wire.

  Here, the block is a flat part that holds the electric wires side by side, an electric wire part that is inserted to the back side of the socket where the connector plug of the cable connector is located, and a thick part that bundles and holds the electric wires. It is preferable that it is comprised from the main-body part fitted by the near side of the socket away from the plug. In this case, the socket has an engagement protrusion, and the block is provided with an engagement recess corresponding to the engagement protrusion. When the block is inserted into the socket, the engagement protrusion is engaged with the engagement recess. It is more preferable to prevent the block from coming off.

  The network cable of the present invention is manufactured by the following manufacturing method. That is, cable processing step: stripping the cable sheath to expose each wire of the twisted cable, jig mounting step: step of inserting the wires arranged side by side in a predetermined arrangement order into the jig holding the side by side, molding Preparation step: a step of fixing the position of the twisted pair cable to the mold using the jig as a positioning reference, a block molding step: a step of pouring resin into the die and forming a block that integrally wraps the electric wire at the end of the twist cable; Connector mounting step: Step of inserting the block into the socket of the cable connector, Crimping step: Stepping the connector plug of the cable connector into the wire sheath and conducting the connector plug and the core of the wire in order, The network cable of the present invention is manufactured.

  The present invention has an effect that a network cable configured by attaching a cable connector to an end of a twisted pair cable can be easily manufactured by a procedure of inserting a block formed at the end of the twisted pair cable into a socket of the cable connector. Have This is an advantage especially when manufacturing a thick category 7 network cable. In addition, the present invention has an effect that it is possible to easily cope with a change in the standard of the network cable by changing only the cable connector while making the block a standardized size and shape. Furthermore, the block itself formed at the end of the twisted pair cable can be used as an alternative part of the cable connector, which has the effect of bringing a new standard for network cables.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a flowchart showing a manufacturing procedure of a network cable 80 according to the present invention, FIGS. 2 to 13 are perspective views of a twisted pair cable 20 or a network cable 80 showing each step in the manufacturing procedure, and FIG. FIG. 3 shows a twisted pair cable 20 in the sheath peeling procedure 2 of the cable processing step, FIG. 4 shows a twisted pair cable 20 in the net processing procedure 3 of the cable processing step, and FIG. Twisted pair cable 20 in shield processing procedure 4, FIG. 6 shows twisted pair cable 20 in wire arrangement procedure 5 in the cable processing step, FIG. 7 shows twisted pair cable 20 in jig installation procedure 6 in the jig installation step, and FIG. Twisted pair cable in step 7 20, FIG. 9 shows the twisted pair cable 20 in the molding procedure 8 in the molding preparation process and the block molding process, FIG. 10 shows the twisted pair cable 20 in the wire preparation procedure 9 in the molding preparation process and the block molding process, and FIG. FIG. 12 shows the twisted pair cable 20 in the procedure 10, FIG. 12 shows the network cable 80 in the crimping procedure 11 in the connector attaching process, and FIG. 13 shows the completed network cable 80, respectively.

  In this example, the network cable 80 is manufactured from the twisted pair cable 20 corresponding to category 7 whose manufacturing procedure is facilitated by application of the present invention. As shown in FIG. 1, the manufacturing procedure of the present invention includes a cable processing process, a jig mounting process, a molding preparation process, a block molding process (shown as a series of molding preparation process and block molding process in FIG. 1), a connector. The process goes through the attachment process and the crimping process, but each process has more specific procedures: cable cutting procedure 1, sheath peeling procedure 2, net processing procedure 3, shield processing procedure 4, wire arrangement procedure 5, jig mounting procedure 6 , Wire cutting procedure 7, molding procedure 8, wire repair procedure 9, connector mounting procedure 10, and crimping procedure 11.

  Specifically, as shown in FIGS. 2 to 6, first, as a cable processing step, the twisted pair cable 20 is cut into an appropriate length (cable cutting procedure 1), and the cable sheath 21 at the end of the twisted pair cable 20 is formed. Removal (sheath peeling procedure 2), and the covering net 22 is exposed. Then, the covering net 22 is removed (net processing procedure 3), and finally the aluminum shield 23 covering each electric wire 24 is also removed (shielding procedure 4) to expose the electric wires 24. When the electric wires 24 are arranged in a predetermined order, the electric wires 24 are cut out (electric wire arrangement procedure 5). The electric wires 24 are cut and aligned in order to facilitate the insertion of the electric wires 24 into holes 31 of a jig 30 described later. The end surfaces of the electric wires 24 may be cut and aligned at a predetermined angle, for example, 30 degrees. In the jig 30 of this example, in order to arrange the electric wires 24 of the thick category 7 twisted pair cable 20 in a predetermined arrangement order, the holes 31 are provided in two stages on the upper and lower sides. In the case of a cable, the holes may be provided in a line.

  Next, as seen in FIGS. 7 and 8, the electric wires 24 arranged in a predetermined order are inserted through the jig 30 in order (jig mounting procedure 6). The jig 30 is provided with a plurality of holes 31 side by side corresponding to the electric wires 24 arranged in a predetermined order. Each electric wire 24 is inserted into each of the holes 31 and protrudes from the jig 30, and the protruding portion of the electric wire 24 protruding from the jig 30 is trimmed along the side surface of the jig 30 with, for example, the scissors 40 (electric wire cutting). Procedure 7). The reason why the protruding portion of the electric wire 24 is cut is to allow the end of the twisted pair cable 20 to which the jig 30 is attached to be inserted into the mold.

  Thus, after inserting the electric wire 24 into the jig 30 and trimming the excess electric wire 24, the jig 30 is used as a positioning tool as shown in FIGS. 9 and 10, and the twisted pair cable 20 is made of gold. The block 60 is inserted into the mold 50, and the block 60 is injection-molded at the end of the twisted pair cable 20 (molding procedure 8). The block 60 of this example is composed of a flat wire portion 601 that holds the wires side by side and a main body portion 602 that is fitted to the front side of a socket 702 of a connector plug 701 described later. An engaging recess 603 is formed on the upper surface. Since the tip end portion of the electric wire 24 is inserted into the jig 30, the electric wire 24 protrudes from the injection-molded block 60 after the jig 30 is removed (see FIG. 10). For example, as shown in FIG. 11, the electric wires 24 protruding from the block 60 are trimmed and aligned with the end face of the block 60 by using the scissors 40 (electric wire reworking procedure 9). Thus far, the forming of the block 60 at the end of the twisted pair cable 20 is completed.

  Finally, as shown in FIGS. 12 and 13, the block 60 is inserted into the socket 702 of the dedicated cable connector (RJ45 connector) 70 (connector mounting procedure 10), and the engaging protrusion 703 provided on the socket 702 is inserted into the block 60. If it is made to engage with the engaging recess 603, the insertion is completed. The cable connector 70 of this example incorporates a plurality of connector plugs 701 in accordance with the electric wires 24 arranged in a predetermined arrangement order in the block 60. From now on, when the block 60 is inserted into the socket 702 of the cable connector (RJ45 connector) 70 and then the cable connector 70 is crimped, the connector plug 701 bites into the wire sheath 241 covering the corresponding wire 24, and the connector plug 701 And the core wire (not shown) of the electric wire 24 are conductively connected to each other (crimping procedure 11).

  Thus, if both ends of the twisted pair cable 20 cut by an appropriate length are processed according to the above manufacturing procedure and the cable connector 70 is attached, the network cable 80 corresponding to category 7 is completed as shown in FIG. Since the cable connector 70 is crimped in a state where the block 60 formed at the end of the network cable 80 is inserted into the socket 702, there is no possibility of separation in normal use of the completed network cable 80. The network cable 80 manufactured in this way can be shipped by connecting it to a testing machine and confirming that the electric wires 24 arranged in the cable connectors 70 at both ends are in the correct order.

  As described above, the present invention not only reduces the confusion in manufacturing the network cable 80, but also simplifies the manufacturing process, thereby improving the manufacturing efficiency of the network cable 80. It also supports the global trend of RoHS (Restriction of the use of certain Hazardous Substances in Electrical and Electronic Equipment). In particular, the problem that the cable connector 70 is too small with respect to the twisted pair cable 20 as seen in the category 7 network cable 80 is also solved.

It is a flowchart showing the manufacturing procedure of the network cable based on this invention. It is a perspective view showing the twisted pair cable in the cable cutting procedure of a cable processing process. It is a perspective view showing the twisted pair cable in the sheath peeling procedure of a cable processing process. It is a perspective view showing the twisted pair cable in the net processing procedure of a cable processing process. It is a perspective view showing the twisted pair cable in the shield processing procedure of a cable processing process. It is a perspective view showing the twisted pair cable in the electric wire arrangement | sequence procedure of a cable processing process. It is a perspective view showing the twisted pair cable in the jig | tool attachment procedure of a jig | tool attachment process. It is a perspective view showing the twisted pair cable in the electric wire cutting procedure of a jig | tool mounting process. It is a perspective view showing the twisted pair cable in the molding procedure of a molding preparation process and a block molding process. It is a perspective view showing the twisted pair cable in the electric wire repair procedure of a shaping | molding preparation process and a block shaping | molding process. It is a perspective view showing the twisted pair cable in the connector attachment procedure of a connector attachment process. It is a perspective view showing the network cable in the crimping | compression-bonding procedure of a connector attachment process. It is a perspective view showing the completed network cable.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cable cutting procedure 2 Sheath peeling procedure 3 Net processing procedure 4 Shield processing procedure 5 Wire arrangement procedure 6 Jig mounting procedure 7 Wire cutting procedure 8 Molding procedure 9 Wire repair procedure
10 Connector mounting procedure
11 Crimping procedure
20 Twisted pair cable
70 Cable connector
701 connector plug
702 socket
703 Engagement protrusion
80 Network cable

Claims (4)

In a network cable configured by attaching a cable connector to the end of a twisted pair cable,
Strip the cable sheath to expose each wire of the twisted cable, form a block that integrally wraps the wires arranged side by side in a predetermined order, insert the block into the socket of the cable connector, and connect the connector plug of the cable connector A network cable, wherein the connector plug and the core of the electric wire are made conductive. The block is the flat part that holds the wires side by side, the wire part that is inserted to the back of the socket where the connector plug of the cable connector is located, and the thick part that bundles and holds the wires, and is separated from the connector plug of the cable connector. The network cable according to claim 1, further comprising a main body portion fitted on the front side of the socket. The socket has an engaging protrusion, and the block is provided with an engaging recess corresponding to the engaging protrusion, and when the block is inserted into the socket, the engaging protrusion is engaged with the engaging recess to remove the block. The network cable according to claim 1, wherein the network cable is stopped. A method of manufacturing a network cable comprising connecting a cable connector to an end of a twisted pair cable,
Cable processing step: Stripping the cable sheath and exposing each wire of the twisted cable,
Jig mounting step: a step of inserting the electric wires arranged side by side in a predetermined arrangement order into a jig that holds the electric wires in the horizontal arrangement state;
Molding preparation step: a step of fixing the position of the twisted pair cable to the mold using the jig as a positioning reference,
Block forming step: a step of pouring resin into the mold and forming a block that integrally wraps the electric wire at the end of the twist cable;
Connector mounting step: a step of inserting the block into a socket of a cable connector;
Crimping step: A method for manufacturing a network cable, in which the connector plug of the cable connector is bitten into an electric wire sheath, and the step of electrically connecting the connector plug and the core of the electric wire is performed.

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