JPH0648118U - Multi-core colored cable - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent color unevenness / peeling of identification colors from appearing clearly. [Structure] A coloring tape is applied to the inside of the insulator of one or more cores of a multi-core cable using a cross-linked polyethylene resin for the insulator, and a coloring paint is applied to the outside of the insulator.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cross-linked polyethylene insulated cable, and more particularly to a multi-core colored cable capable of preventing color unevenness or peeling of an identification color from appearing clearly.

[0002]

[Prior art]

 Generally, multi-core cross-linked polyethylene insulated cables are used properly depending on the purpose of use or the type of location. That is, in the case of a cable, a plurality of wire cores are gathered together to form one cable, and one end of this cable is connected to a specific device, and the other end of the cable connected to this device is connected to another device or When connecting to the power supply equipment, the insulation covered by the conductor is colored so as not to make a mistake in connecting the wires to be connected. In the case of a power cable, it is especially important that the insulator be colored, because incorrect connection at the terminal or at the connection can create a short circuit between wires. This coloring of the insulator identifies the wire core to be connected to prevent misconnection. In this way, the cables are colored by coloring the insulator covering the conductors so that they can be used properly.

Various colors such as red, yellow, and blue are currently used for this color classification. As a conventional method for coloring the insulator, a method of coloring the surface of an insulator 210 made of a crosslinked polyethylene resin applied on the conductor 200 with a paint 220 as shown in FIG.

[0004]

[Problems to be solved by the device]

 According to such a conventional method, the coating 220 is directly applied to the crosslinked polyethylene resin 210. However, the coating 220 is hard to stick to the crosslinked polyethylene resin 210 and causes color unevenness, or the coating 220 is not applied at all. However, there is a problem in that the coating value 220 once adhered or the paint 220 that has once adhered is peeled off in a production process to cause a decrease in commercial value.

The present invention has been made in view of the above problems of the prior art, and its purpose is to prevent color unevenness and peeling of identification colors from appearing clearly. It is intended to provide a multi-core colored cable that can be used.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the multi-core colored cable of the present invention is a multi-core cable using a cross-linked polyethylene resin as an insulator, in which a colored tape is applied to the inside of the insulator of one or more core wires, It is configured by applying a coloring paint to the outside of the insulator.

[0007]

[Action]

 Identification is made by applying colored tape to the inside of the insulator of one or more cores of a multi-core cable using a cross-linked polyethylene resin for the insulator and applying colored paint to the outside of the insulator. It is possible to prevent color unevenness / peeling from appearing clearly.

[0008]

【Example】

 Embodiments of the present invention will be described below. FIG. 1 shows an embodiment of a multi-core colored cable according to the present invention. In the figure, reference numeral 1 denotes a cross-linked polyethylene insulation cable, and a plurality of insulation cores are twisted together to form a multi-core cable (three cores in this embodiment). The cross-linked polyethylene insulated cable 1 is usually used as a cable for connecting devices when transmitting and receiving signals between communication devices and supplying power. Insulated wire cores 2, 3 and 4 are provided with colored tapes 8, 9 and 10 on the conductors 5, 6 and 7. The conductors 5, 6 and 7 are generally composed of a single core of copper wire or a stranded wire. The colored tapes 8, 9 and 10 are composed of synthetic resin tapes and have various colors such as red, yellow, blue, white, black and green. In this embodiment, for example, red and yellow are used. , Three colors of blue are used.

Insulators 11, 12 and 13 are made of a cross-linked polyethylene resin and are extrusion-coated on the colored tapes 8, 9 and 10. Then, paints 14, 15 and 16 for identification are applied to the surfaces of the insulators 11, 12 and 13. The colors of the paints 14, 15, 16 are selected to be the same as those of the coloring tapes 8, 9, 10. That is, if the color of the colored tape 8 applied on the conductor 5 of the insulated wire core 2 is red, the red paint 14 is applied to the outer surface of the insulator 11 and the conductor 6 of the insulated wire core 3 is coated. If the color of the colored tape 9 applied to the above is yellow, the yellow paint 15 is applied to the outer surface of the insulator 12, and the color of the colored tape 10 wound on the conductor 7 of the insulated wire core 4 is blue. Then, the blue paint 16 is applied to the outer surface of the insulator 13.

The coating materials 14, 15, 16 applied to the surfaces of the insulators 11, 12, 13 are coating materials (insulators coated on the conductors) 11, 12 for the insulation cores 2, 3, 4. , It is better to use the most suitable one in relation to the 13 species.

Reference numeral 17 denotes an interposition, which fills the gap between the twisted insulated cores 2, 3 and 4 so that the cross-section of the crosslinked polyethylene insulated cable 1 becomes substantially circular. The insulating tapes 2, 3 and 4 and the inclusions 17 are bundled together and the holding tape 19 is wound. Reference numeral 18 denotes a sheath, which is coated on the insulating wire cores 2, 3, and 4 and is made of vinyl chloride resin. The sheath 18 runs the twisted insulated cores 2, 3 and 4 and is continuously extruded and coated on the insulated cores 2, 3 and 4 by using an extruder.

In the present embodiment, the colors of the paints 14, 15, 16 applied to the outer surfaces of the insulators 11, 12, 13 are three colors of red, yellow and blue, but other colors may be used. Paint can also be used. For the other color paints, three color paints of red paint 14, yellow paint 15 and blue paint 16 are used. For example, for orange paint, the red paint 14 and the yellow paint 15 are mixed. By combining them, the green paint can be easily mixed with the yellow paint 15 and the blue paint 16, and the purple paint can be easily mixed with the red paint 14 and the blue paint 16. Can be realized. Also, these intermediate color paints can be easily realized by mixing the red paint 14, the yellow paint 15, and the blue paint 16 in appropriate amounts.

The cross-linked polyethylene resin is translucent, and the color of the lower side of the insulators 11, 12, 13 is projected to the surface of the insulators 11, 12, 13 and, therefore, according to this embodiment, the conductors 5, 6, 7 are formed. The colored tapes 8, 9, and 10 are applied on the above, and the insulators 11, 12, and 13 are extruded and covered on the colored tapes 8, 9, and 10, and the coating 14, 14 is applied to the surface of the insulators 11, 12, and 13. Since the coating material 15 and 16 are applied, the coating material 16 is hard to stick to the insulators 11, 12 and 13 made of the cross-linked polyethylene resin, and color unevenness is caused, or the coating material 16 is rubbed because it is not applied at all. Even if the adhered paint 16 is peeled off in the production process and becomes lumpy, the colors of the colored tapes 8, 9, 10 wound around the lower sides of the insulators 11, 12, 13 cause the insulators 11, 12, 13 to become colored. The color painted on the surface of It will not be corrected and the product value will not be reduced.

[0014]

[Effect of device]

 Since the present invention is configured as described above, according to the present invention, it is possible to prevent color unevenness and peeling of the identification color from appearing clearly.

[Brief description of drawings]

FIG. 1 is an overall perspective view, partly in section, showing an embodiment of a cross-linked polyethylene insulated cable according to the present invention.

FIG. 2 is a cross-sectional view showing a method of coloring a conventional crosslinked polyethylene insulated cable.

[Explanation of symbols]

1 …………………………………………………… Cross-linked polyethylene insulation cable 2, 3, 4 …………………………………… Insulation core 5, 6, 7… …………………………………… Conductor 8,9,10 ……………………………… Coloring tape 11,12,13 ………………………… Insulator 14 , 15, 16 ……………………………… Paint 17 ………………………………………… Inclusion 18 ………………………………………… …sheath

Claims (1)

[Scope of utility model registration request] 1. A multi-core cable using a cross-linked polyethylene resin as an insulator, wherein a coloring tape is applied to the inside of the insulator of one or more core wires of the multi-core cable, and a coloring paint is applied to the outside of the insulator. A multi-core colored cable made by applying.