JP2010045926A - Electric wire cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric wire cable enabling a reduction of protection work during the laying work of the electric wire cable. <P>SOLUTION: The electric wire cable includes an electric wire cable body 1 having an external sheath 7, and with a tubular protective cover 2 composed of an insulating and flexible material for housing the electric wire cable body 1 so as to ensure a space 9 with regard to the electric wire cable body 1. Preferably, the protective cover 2 includes light transmission properties to virtually recognize a product name or the like displayed on the cover of the electric wire cable body 1. More preferably, a plurality of tearing grooves 8 are formed extending in the longitudinal direction on the inner/outer circumferential surfaces of the protective cover 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electric cable such as a communication cable, and more particularly to an electric cable in which a protective work is reduced when laying close to or intersecting with a power line such as a low-voltage indoor wiring.

  When installing a cable such as a communication cable that carries a weak current in the attic of a house, at a location that approaches or intersects with a power line such as low-voltage indoor wiring, it is 10 cm or more to the power line due to the technical standards of electrical equipment. It is necessary to take measures such as taking a separation distance, attaching an insulating partition wall to a rigid brazing, and placing it in a rigid insulating pipe having flame resistance and water resistance. Usually, after laying a communication cable, a spiral sleeve (spiral tube) is wound around the communication cable at the intersection of the cables for the purpose of protecting the cable.

  However, this method has the following problems.

  (1) The work of winding the spiral sleeve needs to be performed at all points where it approaches or intersects with the power line. The power line is wired to the ceiling lighting of each room, the outlet of the room, and communication. There are various types of cables, including alarm cables, heat-resistant cables, LAN cables, TV coaxial cables, telephone cables, etc., so it is necessary to install them in many places. And labor is needed.

  (2) Since there are many places where the power line approaches or intersects with each other, the risk of construction leakage occurs if the spiral sleeve is wound around by searching for it.

  (3) When protecting a cable with a spiral sleeve, etc., the work is mainly performed in a place corresponding to the back of the ceiling, but it must be performed upward on the ladder or in a confined place on the back of the ceiling. There is a demand to reduce the work as much as possible.

Note that Patent Document 1 discloses a spiral tube used in the above-described application.
JP 2002-262442 A

  The present invention has been made to solve the above-described conventional problems, and its purpose is to reduce the protective work at the time of laying construction, thereby reducing the laying construction time and the laying construction cost. It is in providing the electric wire cable which can be planned.

  An electric wire cable of the present invention includes an electric wire cable main body having an outer sheath, and a tubular protective cover made of an insulating and flexible material for housing the electric wire cable main body so as to have a gap between the electric wire cable main body and It has.

  The protective cover is light transmissive so that a product name or the like displayed on the outer cover of the electric cable body can be visually recognized.

  Also, a plurality of tearing grooves are formed on the inner peripheral surface or outer inner peripheral surface of the protective cover so as to extend along the longitudinal direction of the protective cover.

  The wire cable body is a communication cable such as an alarm wire cable, a heat-resistant wire, a LAN cable, a TV coaxial cable, a telephone line, or the like.

  ADVANTAGE OF THE INVENTION According to this invention, the reduction of the protective work at the time of laying construction can be aimed at, Therefore The electric wire cable which can aim at shortening of laying construction time and reduction of laying construction cost can be provided.

  The present invention will be described below with reference to the drawings. In this description, common parts are denoted by common reference numerals throughout the drawings.

<First Embodiment>
FIG. 1 is a cross-sectional view of an electric cable according to the first embodiment of the present invention. The electric wire cable of this embodiment is comprised from the electric wire main body 1 and the tubular protective cover 2 which consists of materials, such as an insulating and flexible plastic, which accommodates this electric wire main body 1. FIG.

  In this example, the cable main body 1 has a plurality of, for example, four pairs of twisted wires 6 in which two single wires 5 in which the outer periphery of the conductor 3 is covered with an insulator 4 are twisted together. The case where the wire 6 is an alarm wire cable covered with an outer sheath 7 made of an insulating material such as plastic is illustrated. However, the electric wire main body 1 may be a LAN cable, a heat-resistant electric wire, a TV coaxial cable, a telephone line, or a power line in addition to such an alarm electric cable.

  The protective cover 2 is light transmissive in addition to having insulation and flexibility as described above so that characters and marks such as product names displayed by printing or the like can be visually recognized on the outer sheath 7 of the cable body 1. Have sex. Moreover, the protective cover 2 has a cross-sectional shape combining a plurality of arcs whose outer periphery is round and whose inner periphery is convex inward, and the groove portions 8 are respectively formed at locations where the inner peripheral surface is thin. . That is, a plurality of groove portions 8 are formed on the inner peripheral surface of the protective cover 2, and the plurality of groove portions 8 are extended along the longitudinal direction of the protective cover 2. Further, a gap 9 is formed between the electric cable body 1 and the protective cover 2 so that the electric cable body 1 can be taken out as necessary.

  When laying and constructing an electric cable having such a structure indoors such as a detached house, an apartment house, an office, a school, or a government office building, the electric cable body 1 is stored in a tubular protective cover 2 made of an insulating material. Therefore, there is no need to check each time the power line such as the low-voltage indoor wiring approaches or intersects with each other, and it is not necessary to perform the protective work of winding the spiral sleeve each time as in the prior art. In addition, there is no risk of construction leakage caused by winding the spiral sleeve as in the prior art. As a result, it is possible to shorten the laying time of the electric cable and the laying cost.

  Further, since the protective cover 2 is made of a light-transmitting material, the characters and marks such as the product name of the electric cable main body 1 housed therein are visually recognized in the state of being housed in the protective cover 2. And there is no obstacle during laying work.

  Furthermore, since a plurality of grooves 8 are formed on the inner peripheral surface of the protective cover 2, the required length of the electric cable body 1 can be easily taken out by tearing the protective cover 2 with the grooves 8, and the connecting work It can be performed in the same manner as in the past. Since the plurality of groove portions 8 are formed on the inner peripheral surface of the protective cover 2, it is possible to prevent catching at the time of routing during laying construction, adhesion of dirt, and the like.

  Moreover, since the gap 9 is formed between the electric cable main body 1 and the protective cover 2, the electric cable main body 1 can be pulled out from the protective cover 2 as necessary.

  In addition, in the electric wire cable of this embodiment, the case where the protective cover 2 was comprised with the material which has a light transmittance was demonstrated. However, the protective cover 2 may be made of a light-impermeable material depending on circumstances. In this case, by partially tearing the protective cover 2 using the groove 8, the product name of the electric wire main body 1 accommodated therein can be easily confirmed.

  Moreover, when laying and constructing the electric cable of the present embodiment outdoors, the electric cable body 1 is housed between the protective covers 2, so that the electric cable body 1 is damaged from scratches caused by friction with trees or the like. Can be prevented.

<Second Embodiment>
FIG. 2 is a cross-sectional view of an electric cable according to the second embodiment of the present invention. The electric wire cable of this embodiment is comprised from the electric wire cable main body 1 and the tubular protective cover 2 which consists of materials, such as an insulating, flexible, and light-transmitting material which accommodates this electric wire cable main body 1. FIG. ing. The wire cable of this embodiment is different from that of the first embodiment shown in FIG. 1 in that the protective cover 2 is a cross-section combining a plurality of triangles whose outer periphery is round and whose inner periphery is inwardly convex. Having a shape.

  According to the electric wire cable of this embodiment, the same effect as the electric wire cable of the first embodiment can be obtained.

<Third Embodiment>
FIG. 3 is a cross-sectional view of an electric cable according to the third embodiment of the present invention. The electric wire cable of this embodiment is comprised from the electric wire cable main body 1 and the tubular protective cover 2 which consists of materials, such as an insulating, flexible, and light-transmitting material which accommodates this electric wire cable main body 1. FIG. ing. The wire cable of the present embodiment is different from that of the first embodiment shown in FIG. 1 in that the protective cover 2 is a cross section in which a plurality of arcs whose outer periphery is octagonal and whose inner periphery is convex inward Having a shape.

  According to the electric wire cable of this embodiment, the same effect as the electric wire cable of the first embodiment can be obtained.

<Fourth Embodiment>
FIG. 4 is a cross-sectional view of an electric cable according to the fourth embodiment of the present invention. The electric wire cable of this embodiment is comprised from the electric wire cable main body 1 and the tubular protective cover 2 which consists of materials, such as an insulating, flexible, and light-transmitting material which accommodates this electric wire cable main body 1. FIG. ing. The wire cable of this embodiment is different from that of the first embodiment shown in FIG. 1 in that the protective cover 2 is a cross-section in which a plurality of arcs whose outer periphery is a pentagon and whose inner periphery is convex inward are combined. Having a shape.

  According to the electric wire cable of this embodiment, the same effect as the electric wire cable of the first embodiment can be obtained.

<Fifth Embodiment>
FIG. 5 is a cross-sectional view of an electric cable according to the fifth embodiment of the present invention. The electric wire cable of this embodiment is comprised from the electric wire cable main body 1 and the tubular protective cover 2 which consists of materials, such as an insulating, flexible, and light-transmitting material which accommodates this electric wire cable main body 1. FIG. ing. The wire cable of the present embodiment is different from that of the first embodiment shown in FIG. 1 in that the protective cover 2 has a cross-sectional shape in which the outer periphery is a combination of a plurality of triangular shapes and the inner periphery is a round shape. Is to have.

  In the electric wire cable of the present embodiment, a plurality of groove portions 8 are formed in a portion where the outer peripheral surface of the protective cover 2 is thin. Therefore, as in the case of the first embodiment, although the effect of preventing catching at the time of laying construction and adhesion of dirt is slightly reduced, the other effects are the same as in the first embodiment. Can get to.

  As mentioned above, although this invention was demonstrated using embodiment, this invention is not limited to the said embodiment, In the implementation stage, it can change variously in the range which does not deviate from the summary. For example, in each of the embodiments described above, the case where one electric cable is accommodated in the protective cover has been described. However, a modification may be made so that a plurality of electric cables are accommodated.

Sectional drawing of the electric wire cable which concerns on the 1st Embodiment of this invention. Sectional drawing of the electric wire cable which concerns on the 2nd Embodiment of this invention. Sectional drawing of the electric wire cable which concerns on the 3rd Embodiment of this invention. Sectional drawing of the electric wire cable which concerns on the 4th Embodiment of this invention. Sectional drawing of the electric wire cable which concerns on the 5th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Electric wire cable main body, 2 ... Protective cover, 3 ... Conductor, 4 ... Insulator, 5 ... Single wire, 6 ... Pair twisted wire, 7 ... External sheath (jacket), 8 ... Groove part, 9 ... Gap.

Claims (4)

An electric cable body having a jacket;
An electrical cable comprising: a tubular protective cover made of an insulating and flexible material that accommodates the electrical cable body so that a gap is provided between the electrical cable body and the electrical cable body.   2. The electric cable according to claim 1, wherein the protective cover is light transmissive so that a product name or the like displayed on the outer cover of the electric cable main body can be visually recognized.   2. The electric cable according to claim 1, wherein a plurality of tearing grooves are formed extending along a longitudinal direction of the inner circumferential surface or the outer inner circumferential surface of the protective cover.   The electric cable according to claim 1, wherein the electric cable main body is a communication cable.

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