JPH07249321A - Electric cord - Google Patents

Abstract

PURPOSE:To make an electric wire that has good appearance and is distinguished easily even in a dark place by coiling color strings on the outside of a core part of a conductor and coating the outside of the strings with transparent resin. CONSTITUTION:A core part 1 of a cord is composed of two kinds of color strings 2, 3 coiled on the outside of the core part and transparent resin 4 coating the outside of the strings. Each color string 2, 3 is produced by impregnating a string made of polyester-based fibers with a fluorescent paint. A plurality of color strings 2, 3 respectively are coiled spirally on the outside of the a paper tape 7 of the core part 1 and color parts 8, 9, which are like two different color spiralled strips, are formed on the outside of the core part 1 and thus a stripe pattern is formed. The color strings 2, 3 can be observed through the transparent resin 4 and the appearance of the cord good and the cord can be visually distinguished even in a dark place such as in the interior, under water, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric cord used for connecting electric appliances.

[0002]

2. Description of the Related Art Conventionally, as an electric cord, a conductor covered with an insulator, or a conductor covered with an insulator and a plurality of wire cores twisted together and covered with intervening yarn or paper tape are further covered with an insulator. Something that has been done is known. The conductor is
It is composed of stranded copper wire. The insulator is made of synthetic resin such as vinyl chloride or rubber. The outermost insulator has a tubular shape and is colored in a dark single color such as black or gray.

[0003]

The electric cord may be used in a dark place such as indoors, but the conventional electric cord is colored in a dark single color as described above, and therefore it is not visible in a dark place. It is difficult to confirm and may get caught on your foot. In addition, since it has a dark single color and does not look good, it has been customary to arrange it so as to be hidden behind an electric appliance, furniture, etc., which is troublesome for connection work. Further, although the electric cord is sometimes used in an underwater camera or the like, it is difficult to visually confirm its presence in a dark place underwater, and there is a risk of being caught by an obstacle.

The object of the present invention is to solve the above problems,
The purpose of the present invention is to provide an electric cord that has good appearance, can be easily confirmed even in a dark place, and is highly flexible in manufacturing.

[0005]

An electric cord according to the present invention is characterized in that a colored thread or colored tape is wound around the core portion including a conductor, and the outside is covered with a transparent resin. is there.

Although only one kind of colored yarn or colored tape may be used, it is preferable to use plural kinds of colored threads or colored tapes having different colors. Further, a colored thread and a colored tape may be used for one electric cord.

The colored yarn may be spirally wound by, for example, a horizontal winding machine, or wound in a knitted state by a braiding machine. The coloring tape is wound in a spiral shape, for example.
The colored yarn or the colored tape may be wound around the core portion without a gap, or may be wound with a gap so that a part of the core portion can be seen from the outside. However, the method of winding the colored yarn and the colored tape is not limited to the above.

As a material for the colored yarn, for example, a synthetic fiber such as polyester fiber (for example, Tetron under the trade name) or a natural fiber such as cotton yarn can be used. As the colored yarn, for example, a yarn obtained by applying or impregnating the yarn with a fluorescent paint, a luminescent paint, or the like, a lame-inserted yarn, or the like is used. As the coloring tape, for example, a cloth tape in which a colored thread is knitted, a cloth tape in which a thread is knitted is colored with a fluorescent paint, a luminous paint, or the like, a paper tape colored with a fluorescent paint, a luminous paint, or the like is used. However, the materials and configurations of the colored yarn and the colored tape are not limited to the above.

The conductor is made of, for example, a stranded copper wire or the like. As the core portion, for example, a conductor only, a conductor covered with an appropriate insulator, or a plurality of wire cores in which the conductor is covered with an insulator are twisted, and the valley portion is filled with an intervening thread. It is used with paper tape wrapped around it. Alternatively, a commercially available electric cord may be used as a core portion, and a colored thread or a colored tape may be wound around the core portion. However, the configurations of the conductor and the core are not limited to the above.

Only one core part may be used for one electric cord, or a plurality of core parts may be used. That is, a colored thread or a colored tape may be wound around the outside of one core portion and the outside thereof may be covered with a transparent resin, or a colored thread or a colored tape may be wound around each of a plurality of core portions to form a transparent resin. You may coat with.

[0011]

The colored thread or colored tape wound on the outer side of the core is visible from the outside through the transparent resin, so that it looks good and can be easily confirmed visually even in a dark place such as indoors or underwater. Further, since the colored yarn or the colored tape is covered with the transparent resin, the colored yarn or the colored tape is less likely to be affected by the air or the sun rays, and thus is less likely to be discolored, and only the stain on the surface of the transparent resin is wiped off. The color can be maintained.

In the electric cord according to the present invention, the sheath, which is the outermost insulator of the conventional electric cord, is replaced with a transparent resin, and a simple process of winding colored thread or colored tape in the conventional electric cord manufacturing process. Since it is only added, manufacturing is easy.

The color of the electric cord can be easily changed by changing the type of the colored thread or colored tape used. By using a plurality of types of colored threads or colored tapes, it is possible to form a pattern such as a striped pattern on the electric cord, and it is easier to confirm. And you can easily change the pattern and color scheme by changing the combination such as the type and amount of colored threads or colored tapes used. Therefore, if you prepare multiple types of colored threads or colored tapes, It is possible to manufacture many kinds of electric cords with different patterns and colors. As a method of obtaining an electric cord having a colored surface, it is conceivable to use a colored sheath. In this case, the sheath can be colored in a single color, but it is very difficult to form a pattern on it. Therefore, in order to obtain many types of electric cords, it is necessary to prepare many types of sheath materials that are colored in different colors.
It is uneconomical. On the other hand, according to the present invention, it is possible to obtain various kinds of electric cords having different patterns and colors by only preparing some colored yarns or colored tapes having different colors.

When a colored thread or colored tape colored with a fluorescent paint is used, the electric cord can be confirmed even with a slight light source. When a colored thread or colored tape colored with a luminous paint is used, the electric cord can be confirmed even in the dark.

If a commercially available electric cord is used as the core portion and a colored thread or coloring tape is wound around the core portion, the electric cord satisfying the requirements of the relevant standards can be obtained by itself.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a first embodiment.

The first embodiment is an example applied to a round vinyl cord. This electric cord has a core portion (1), two kinds of colored yarns (2) (3) wound around the core portion (1), It is composed of a transparent resin (4) that covers the outside.

The core portion (1) includes two conductors (5) made of, for example, a stranded copper wire. Each conductor (5) is covered with an insulator (6) made of vinyl chloride, for example. Insulator
The two conductors (5) covered with (6) are twisted together,
The valley portion is filled with an interposing thread (not shown), and the paper tape (7) is wound around the outside. In the case of this embodiment, the conductor (5), the insulator (6), the interposing thread and the paper tape (7)
The core portion (1) is composed of.

The colored yarns (2) and (3) are, for example, yarns made of polyester fiber impregnated with fluorescent paint. Each of the colored threads (2) and (3) is spirally wound around the outer side of the paper tape (7) of the core part (1), whereby the core part (1)
Two spiral strip-shaped colored portions (8) and (9) of different colors are formed on the outer side of, and a striped pattern is formed. Coloring parts (8) (9)
Is actually a plurality of colored threads (2) and (3) arranged side by side, but in the drawing, in order to clearly show the striped pattern,
The colored threads (2) and (3) of (8) and (9) are not shown, the first colored portion (8) is shown in white, and the second colored portion (9) is shown by hatching.

The transparent resin (4) is made of transparent vinyl chloride, for example.

The above electric cord is manufactured, for example, as follows.

First, an extruder is used to coat the conductor (5) with the insulator (6). Next, using a twisting machine,
The two conductors (5) covered with (6) are twisted together, and at the same time, the valleys between the insulators (6) are filled with intervening threads, and the paper tape (7) is wound on the outside. The steps up to this point are the same as the steps in the conventional method for manufacturing an electric cord of this type. Next, a horizontal winding machine (spiral machine) is used to wind the colored threads (2) and (3) on the outside of the paper tape (7). And finally,
Using an extruder, apply transparent resin (4) to the outside of the colored yarns (2) (3).
Cover with. This last step is also the same as the step of covering the outermost portion of the conventional electric cord of this type with an insulating material.

FIG. 2 shows a second embodiment.

The second embodiment is an example applied to a microphone cord, and the same parts as those in the first embodiment are designated by the same reference numerals.

In the case of the second embodiment, the shielding copper wire (10) is spirally wound on the outside of the paper tape (7) by using a horizontal winding machine, and the conductor (5) and the insulator (6) are wound. The core portion (11) is composed of the interposing thread, the paper tape (7) and the copper wire (10). The colored threads (2) and (3) are wound around the copper wire (10) of the core portion (11). The winding directions of the copper wire (10) and the colored threads (2) and (3) are preferably opposite to each other.

Others are the same as in the case of the first embodiment.

In the above embodiment, two kinds of colored yarns (2) and (3) are used, and two kinds of strip-shaped colored portions (8) and (9) having almost the same width are used.
However, the widths of the two kinds of colored portions (8) and (9) may be different from each other. The stripe pattern can be arbitrarily changed by changing the widths of the two kinds of colored portions (8) and (9). Alternatively, only one type of colored yarn may be used to form a single colored portion, or three or more types of colored yarn may be used to form a striped pattern composed of three or more types of colored portions. You may do it.

FIG. 3 shows a third embodiment.

The third embodiment is an example applied to a parallel vinyl cord, and this electric cord has two core portions (12) (1)
3), colored threads (14) (1) wound on the outside of each core (12) (13)
5) It is composed of one transparent resin (16) that covers the outside of the colored yarns (14) and (15) of the two core portions (12) and (13).

The core portions (12) and (13) are conductors (17) and (18), respectively.
Consisting of only colored threads (14) (15) on the outside of each conductor (17) (18)
Is wound directly, and monochromatic colored portions (19) and (20) are formed outside the conductors (17) and (18), respectively. The colored threads (14) (15)
The same color may be used or different colors may be used. Further, a plurality of types of colored yarns of different colors may be wound around the conductors (17) and (18) to form a striped pattern.

Others are the same as in the case of the first embodiment.

In the above embodiment, the colored yarn is wound around the core portion to form the colored portion, but a colored tape made of paper tape, cloth tape or the like may be wound to form the colored portion. Further, the colored portion may be formed by winding a colored thread and a colored tape.

The present invention can be applied to an electric cord of a type different from that shown in the above embodiment.

[0035]

As described above, according to the electric cord of the present invention, it has a good appearance, can be easily visually confirmed even in a dark place, and is resistant to discoloration and can maintain its color. Since the electric cord looks good, it is not necessary to arrange it so as to be hidden behind an electric appliance or furniture, and even if the electric cord is arranged to be exposed, it does not spoil the beauty. Even in dark places, you can easily check it with your eyes, so even if the electric cord is exposed, you are less likely to catch it on your foot, and even if you use it for an underwater camera, you may catch it on an obstacle. Few.

Further, the manufacturing process is simple because only the process of winding the colored thread or the colored tape is added to the conventional manufacturing process of the electric cord. Moreover, the pattern and color arrangement can be easily changed by changing the number, type, and winding method of the colored threads or colored tapes used, which is highly flexible in manufacturing.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of an electric cord according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view of an electric cord according to a second embodiment of the present invention.

FIG. 3 is a partially cutaway perspective view of an electric cord according to a third embodiment of the present invention.

[Explanation of symbols]

 (1) Core part (2) (3) Colored thread (4) Transparent resin (5) Conductor (11) Core part (12) (13) Core part (14) (15) Colored thread (16) Transparent resin (17 ) (18) Conductor

Claims (1)

[Claims] 1. An electric cord, characterized in that a colored thread or colored tape is wound on the outside of a core portion including a conductor, and the outside is covered with a transparent resin.