JP2011249088A - Composite cable for communication - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite cable for communication capable of shortening a working time of laying a coaxial cable, a LAN cable and a telephone cable, reducing a laying cost and more easily performing terminal processing work of each cable.SOLUTION: The composite capable for communication is configured by providing a cable obtained by wrapping a LAN cable and a telephone cable side by side with a coaxial cable, and coating the cables with an insulative common sheath almost in the shape of spectacles. First and second notches for peeling a portion of the common sheath are provided with the common sheath on the coaxial cable side at the position of the central angle at 70 to 50 degrees of the coaxial cable along a cable extension direction.

Description

  The present invention relates to a composite cable for communication in which a coaxial cable, a LAN cable, and a telephone cable are used as one cable.

  Conventionally, in providing TV, Internet, and telephone services to buildings, coaxial cables (TV), LAN cables (Internet), and telephone cables (telephones) are wired. A round cable that collects cables in a batch is used.

  When loose wiring is used, when laying different types of cables at the same time, the workability is not very good because the cables are not assembled.

  On the other hand, when a round cable is used, the contractor differs between TV, the Internet, and the telephone. Therefore, after installing the cable, it takes time to separate the coaxial cable, LAN cable, and telephone cable, and to construct the TV, Internet, and telephone. There were problems such as being unable to get started quickly. Furthermore, when the end of a round cable is processed, the outer cover is removed using a tear or cutter, and after the presser winding tape is removed, each cable is attached to the connector. It was extremely complicated.

  In addition, so-called glasses-type cables described in Patent Documents 1 and 2 have been proposed in order to shorten the laying operation time. The invention “information communication composite cable” described in Patent Document 1 is a coaxial cable that can shorten the laying operation time, can cope with future expansion, and is finished to the external conductor (1) as an information communication composite cable that does not impair the aesthetic appearance. A cable core (2), a LAN cable (3), and a telephone cable (4) are twisted or arranged in parallel, and a composite cable core (A) formed by attaching a tear string (5) vertically is arranged in parallel. A common sheath (6) is provided in the shape of glasses on the top (claim 1). In addition, the coaxial cable (7), the LAN cable (3), the telephone cable (4) and the plastic pipe (8) are twisted together, a holding tape (9) is wound thereon, and a tear string (5) is placed thereon. It is characterized in that it is vertically attached and further provided with a sheath (10).

  The invention “composite cable” described in Patent Document 2 is a composite cable composed of a UTP cable, a pair cable, and a coaxial cable. When a dedicated cable is combined to support multimedia wiring, the UTP cable is subjected to a lateral pressure. In order to maintain the characteristics without receiving external force due to squeezing, and to be able to be used by being inserted into a cable laying pipe of an existing size without being increased in size by compounding, the cross section of the sheath 44 which is an outer sheath Is formed into a spectacle shape, and a pair of the UTP cable 20 and a pair cable 30 is accommodated on one side of the spectacle shape, and the other side is provided on a braid 43 that is an outer conductor of the coaxial cable 40.

  In addition, the installation time of coaxial cables, LAN cables and telephone lines can be shortened and the installation costs can be reduced, the cable terminal processing work can be easily performed, and the role of the partition wall with the low-voltage indoor power wiring can be achieved. For the purpose of providing a composite cable for communication that has a double sheath for providing it, the invention of Patent Document 3 is disclosed.

  In the invention “composite cable for communication” described in Patent Document 3, firstly, a LAN cable and a telephone line vertically attached and a coaxial cable with a jacket are provided side by side, and an insulating property is provided thereon. The common sheath which comprises the partition of this is given to glasses shape (Claim 1). Secondly, tearing grooves extend at two locations on each of the outer peripheral portion of the common sheath provided on the LAN cable and the telephone line and the outer peripheral portion of the common sheath provided on the coaxial cable. It is formed along the direction (Claim 2). Thirdly, the telephone line is characterized in that a common sheath is provided in the shape of glasses on two pairs of twisted wires in which insulated core wires are twisted together (claim 3).

  The communication composite cable described in Patent Document 3 is applied to the outer peripheral portion of the common sheath provided on the LAN cable and the telephone line and the coaxial cable, as described in Claim 2 and FIG. In addition, grooves for pulling out the tearing inner cable are formed in the outer periphery of the common sheath along the extending direction of the common sheath of the composite cable for communication, thereby improving tearability. As a result, each cable laying time is shortened and the cable end work is simplified.

JP 2002-133949 A JP 2003-45237 A JP 2009-158308 A

  As shown in FIG. 3 of Patent Document 3, the position of the groove 42 of the invention described in Patent Document 3 is the connection of the glasses-like common sheath formed on the coaxial cable side and the telephone line and LAN cable side. On the coaxial cable side at positions facing each other across the connecting point (bridge) of the section and the line connecting the centers of the both sides, that is, 90 ° from the connecting point and 180 ° respectively. The common sheath is provided on both sides of the common sheath on the telephone line and LAN cable side.

  However, even if the groove 42 is arranged at such a position in Patent Document 3, for example, the groove 42 on the coaxial cable side and a part of the common sheath on the coaxial cable side at the position of the groove 42 (on the anti-telephone line and LAN cable side). ) Is extremely difficult to pick a part of the common sheath. The same applies to the case of tearing and peeling between the groove 42 on the telephone line and LAN cable side. Furthermore, considerable tension is required to tear a part of the common sheath, which is a difficult operation.

  Accordingly, the present invention provides a composite cable for communication that can shorten the laying work time of a coaxial cable, a LAN cable, and a telephone cable, reduce the laying cost, and can more easily perform the terminal processing work of each cable. For the purpose.

  In order to solve the above-mentioned problems, the present invention is a communication composite cable in which a coaxial cable is vertically arranged with a LAN cable and a telephone cable, and is covered in a substantially glasses shape with an insulating common sheath. The first and second notches for peeling a part of the common sheath are formed in the common sheath on the coaxial cable side at a central angle of 70 ° to 50 ° of the coaxial cable along the cable extending direction. It was set as the structure of the composite cable for communication characterized by having provided.

  Further, the first and second notches are provided on the opposite side of the LAN cable and the telephone cable, and the communication composite cable is configured as described above. Further, the first and second notches are provided at equidistant positions with respect to a line connecting the center of the coaxial cable and the horizontal and vertical centers of the LAN cable and the telephone cable. The composite cable for communication described above is configured.

  In addition, the third and fourth notches for peeling off a part of the common sheath are provided with the LAN cable and the telephone cable vertically, and the horizontal and vertical central angles on the positions of 70 ° to 50 ° in the horizontal direction. The composite cable for communication according to any one of the above, characterized in that a common sheath on the side where the LAN cable and the telephone cable are vertically attached is provided along the cable extension direction.

  The third and fourth notches are provided on the opposite side of the coaxial cable, and the communication composite cable is configured as described above. Furthermore, the third and fourth notches are provided at equidistant positions with respect to a line connecting the center of the coaxial cable and the center of the LAN cable and the telephone cable. The communication composite cable is configured as described above.

  Further, the telephone line cable is configured as a pair of insulated core wires in a glass shape with an insulating jacket, and the connecting portion of the jacket is on a line connecting the center of the coaxial cable and the LAN cable. The communication composite cable according to any one of the above, characterized in that it is located at a position.

  The communication composite cable according to any one of the above, wherein the common sheath has a thickness of 0.7 mm, and the first to fourth notches have a depth of 0.3 mm. did.

  Since the present invention has the above-described configuration, it is possible to shorten the installation time of the coaxial cable, the LAN cable, and the telephone cable, and to reduce the installation cost. Furthermore, the terminal processing work of each cable can be performed more easily. That is, a part of the common sheath can be peeled off with low tension, the internal cable can be easily taken out, and connection with each connector is facilitated.

It is sectional drawing of one Embodiment of the composite cable for communication which is this invention. It is an expanded sectional view of the 2nd notch part. It is the result of having tested the tear tension when changing the position of the notch of the common sheath.

  Hereinafter, a communication composite cable according to the present invention will be described in detail with reference to the accompanying drawings.

  As shown in FIG. 1, a communication composite cable 1 according to an embodiment of the present invention includes a coaxial cable 2 and a LAN cable 3 and a telephone cable 4 that are vertically attached. It is covered with an approximately glasses shape.

  The common sheath 5 is formed with a connecting portion 5e having a thin portion 5f. The thin portion 5f is provided in order to easily tear the coaxial cable 2 side, the LAN cable 3 and the telephone cable 4 side.

  Further, the common sheath 5 is formed with first and second notches 5a and 5b for peeling off a part of the common sheath 5 on the coaxial cable 2 side. The first and second notches 5a and 5b are formed in the common sheath 5 on the coaxial cable 2 side at a position of 60 ° of the center (O) angle of the coaxial cable 2 along the cable extension direction. The arrangement positions of the first and second notches 5a and 5b may be in the range of the center (O) angle of 70 ° to 50 °.

  The first and second notches 5a and 5b are preferably located on the opposite side of the LAN cable 3 and the telephone cable 4 attached vertically. More preferably, the first and second notches 5a and 5b are connected to the center (O) of the coaxial cable 2 and the horizontal and vertical centers (P) of the LAN cable 3 and the telephone cable 4 vertically attached. Provided at equidistant positions with respect to the line (dashed line in the figure). The peeling tension of a part of the common sheath 5 on the coaxial cable 2 side (between the first notch 5a and the second notch 5b and the common sheath 5 on the side opposite to the LAN cable 3 and the telephone cable 4) further decreases.

  Similarly, the common sheath 5 is formed with third and fourth notches 5c and 5d for peeling off a part of the common sheath 5 on the LAN cable 3 and telephone cable 4 side. The third and fourth notches 5c and 5d have the LAN cable 3 and the telephone cable 4 vertically attached, but the LAN cable 3 and the telephone cable 4 at the center (P) angle of 60 ° in the horizontal direction and the vertical direction are vertically attached. It is formed in the common sheath 5 on the one side along the cable extension direction. The arrangement positions of the third and fourth notches 5c and 5d may be in the range of the center (O) angle of 70 ° to 50 °.

  The third and fourth notches 5 c and 5 d are preferably located on the opposite side of the coaxial cable 2. More preferably, the third and fourth notches 5c and 5d are connected to the center (O) of the coaxial cable 2 and the horizontal and vertical centers (P) of the LAN cable 3 and the telephone cable 4 vertically attached. Provided at equidistant positions with respect to the line (dashed line in the figure). The peeling tension of a part of the common sheath 5 on the LAN cable 3 and telephone cable 4 side (between the third notch 5c and the fourth notch 5d and the common sheath 5 on the anti-LAN cable 3 and telephone cable 4 side) is further reduced. To do.

  The shape of the notch is not particularly limited, as shown in FIGS. 1 and 2, such as a V shape, a U shape, and a slit, but the shape with a sharp notch tip further reduces the tearing tension. It can be desirable.

  The coaxial cable 2 has an inner conductor 2a covered with an insulator 2b, a meshed wire made of copper or the like, or an outer conductor 2c such as aluminum foil, and is covered with an insulator jacket 2d from above. . As the coaxial cable 2, a generally available cable can be used.

  The LAN cable 3 is formed by twisting two (paired twisted wires 3d) or four twisted cores of a conductor core wire 3a with a resin such as polyethylene, and bundling them in one or more pairs. Cover with insulating jacket 3c. In order to suppress noise intrusion from the surrounding environment into the cable or to suppress noise radiated from the cable, a shield may be further provided. The LAN cable 3 can use what is generally distributed.

  The telephone cable 4 is formed by covering a conductor core wire 4a with an insulating coating 4b and further bundling two sets of glasses in a jacket 4c.

  In the telephone cable 4, it is desirable that the connecting portion 4 d of the jacket 4 c is located on a line connecting the coaxial cable 2 and the center of the LAN cable 3. The force to peel off the common sheath 5 on the LAN cable 3 and telephone cable 4 side is equally applied to the common sheath 5, and the tension can be reduced.

  Further, as shown in FIG. 2, the first to fourth notches 5a to 5d have a notch depth (L1) of 0.3 mm when the thickness (L) of the common sheath 5 is 0.7 mm. Then, the tension is low, there is no peeling at the distribution stage, and the peeling work can be performed stably.

  FIG. 3 is a result of testing the tear tension when the position of the notch of the common sheath is changed. The vertical axis is the tear tension (N), and the horizontal axis is the arrangement position (center (O) angle) of the first and second notches 5a and 5b in FIG. The tension (N) at the time of tearing is fixed between one end of the composite cable for communication and between the first notch and the second notch on the other end, and is applied to the common sheath 5 on the side opposite to the LAN cable 3 and the telephone cable 4. It is the maximum tension when a meter (made by Aiko Engineering Co., Ltd., model number: RX-10) is hooked and torn by hand.

  As a result of the test, the narrower the central angle (width), the lower the tension, and particularly in the range of the central angle of 70 ° to 50 °, the positions where the first and second notches 5a and 5b face each other (central angle 180 °). It was reduced to about ½ when placed in the position, and a part of the common sheath 5 could be peeled off very easily.

  In addition, if the central angle (width) is too narrow, it is difficult to grasp the first and second notches 5a and 5b with a finger, and a part of the common sheath 5 may be broken in the middle of peeling. It was difficult. Moreover, it was not easy to take out the internal cable from between the cut common sheaths 5.

  Accordingly, the first and second notches 5a and 5b are desirably formed in the common sheath 5 in the range of the central (O) angle of 70 ° to 50 °. Similarly, the third and fourth notches 5c and 5d are desirably formed in the common sheath 5 in the range of the central (P) angle of 70 ° to 50 °.

1 Communication Composite Cable 2 Coaxial Cable 2a Inner Conductor 2b Insulator 2c Outer Conductor 2d Outer Cover 3 LAN Cable 3a Core Wire 3b Insulation Cover 3c Outer Cover 3d Twisted Wire 4 Telephone Cable 4a Core Wire 4b Insulation Cover 4c Outer Cover 4d Connecting Portion 5 Common sheath 5a 1st notch 5b 2nd notch 5c 3rd notch 5d 4th notch 5e Connection part 5f Thin part

Claims (8)

A coaxial composite cable in which a LAN cable and a telephone cable are vertically arranged, and is covered in a substantially glasses shape with an insulating common sheath,
First and second notches for peeling a part of the common sheath are provided in the common sheath on the coaxial cable side at a central angle of 70 ° to 50 ° of the coaxial cable along the cable extending direction. A composite cable for communication. 2. The composite cable for communication according to claim 1, wherein the first and second notches are provided on opposite sides of the LAN cable and the telephone cable vertically attached. The first and second notches are provided at equidistant positions with respect to a line connecting the center of the coaxial cable and the horizontal and vertical centers of the LAN cable and the telephone cable. The composite cable for communication according to claim 2. The third and fourth notches for peeling a part of the common sheath are provided with the LAN cable and the telephone cable, and the LAN cable on the position of the central angle of 70 to 50 degrees in the horizontal and vertical directions. The composite cable for communication according to any one of claims 1 to 3, wherein a common sheath on the side of the telephone cable attached vertically is provided along a cable extension direction. The composite cable for communication according to claim 4, wherein the third and fourth notches are provided on the opposite side of the coaxial cable. The third and fourth notches are provided at equidistant positions with respect to a line connecting a center of the coaxial cable and a center of the LAN cable and the telephone cable vertically attached. 5. A composite cable for communication according to 5. The telephone line cable is configured as a pair of insulated core wires in a glass shape with an insulating jacket, and the connecting portion of the jacket is positioned on a line connecting the center of the coaxial cable and the LAN cable. The composite cable for communication according to any one of claims 1 to 6, wherein: The thickness of the said common sheath is 0.7 mm, The depth of the said 1st-4th notch is 0.3 mm, The any one of Claims 1-7 characterized by the above-mentioned. Composite cable for communication.

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