Long cable and cable identification method

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Industrial application field]

The present invention relates to a long cable including a power cable, a communication cable, an optical fiber cable, a lead wire, and the like, and also relates to a cable identification method for identifying each cable when the long cable is cut and used.

【0002】

[Conventional technology]

Such a long cable is usually manufactured in a long series of states, then divided, and often wound around a cable drum or the like by a certain length and shipped.

【0003】

Further, on the surface of the covering portion of such a long cable, characters indicating the manufacturer name of the long cable, the cable specifications, the serial number, and the like are often displayed. Such characters and the like are attached by printing or the like in the final process of manufacturing.

【0004】

On the other hand, when laying a power cable or wiring a lead wire in a control panel, the long cable is cut to a desired length and each cable is laid / wired. Even at this stage, in order to identify and manage each cable laid / wired, an identification mark for identifying each individual cable is often attached to each cable.

【0005】

As described above, the long cable itself has an identification mark attached, or each cut cable has an identification mark attached, such as JP-A-57-80609, Toku-Kosho 61-161367, and JP-A-3-01009. It is disclosed in.

【0006】

[Problems to be Solved by the Invention]

In this way, long cables are marked with identification marks at the manufacturing stage and at the stage of actual laying / wiring, etc., but in particular, the work of attaching identification marks at the stage of actual laying is It is extremely complicated, and it has been desired to identify individual cables more easily.

【0007】

The present invention has been made to solve such a problem, and an object of the present invention is to easily identify each cable even when a long cable such as a power cable or a communication cable is cut and used. To provide long cables to obtain and cable identification methods.

【0008】

[Means for solving problems]

Therefore, one of the long cables according to the present invention is provided with the same marking section having the same marking over a certain length on the surface of the covering portion of the long cable, and the same marking section is provided. The section is continuously provided from the beginning to the end of the long cable by changing the sign attached to each section. Then, assuming that the shortest length at which the long cable should be cut is the shortest cutting length, the length of the same marking section is set shorter than the shortest cutting length.

【0009】

Further, in the other long cable according to the present invention, the length of the same marking section is set shorter than the length twice the shortest cutting length.

【0010】

It is desirable that the signs are arranged so as to be carried up or down in order for each continuous section.

【0011】

Further, in the cable identification method according to the present invention, the above-mentioned long cable is cut to an arbitrary length equal to or longer than the shortest cutting length, and each mark attached to both ends of the cut obtained cable is marked. This method is used as an identification mark for cables.

【0012】

The long cable includes various cables for power and signals such as a power cable, a communication cable, an optical fiber cable or a lead wire.

【0013】

[Action]

When the length of the same marked section is set shorter than the shortest cut length, when this long cable is cut, each cut portion is located in a different "same marked section". As a result of changing this sign for each same sign section, different signs are attached to both ends of each cable obtained by cutting the long cable.

【0014】

Further, if the length of the same labeled section is set shorter than twice the shortest cutting length, the shortest cutting length is set longer than the half length of the same labeled section. Therefore, both ends of the cut cable may be located in the same "same marking section". In this case, the same markings are attached to both ends of the cut cable. However, since a plurality of cables are not cut in the same marked section, there is no case where a plurality of cables having the same sign are attached to both ends of the cable.

【0015】

On the other hand, in the cable identification method, only by individually cutting such a long cable with a length equal to or longer than the shortest cutting length, two signs can be obtained by the signs attached to both ends of each cable. That is, one set of signs is determined for one cable, and each cable can be specified by this set of signs.

【0016】

[Example]

Hereinafter, preferred embodiments of this embodiment will be described with reference to the accompanying drawings. Figure 1 shows a long cable according to this embodiment. In the long cable 10, a series of signs 20 such as "aaa" and "aab" are attached to the surface of the covering portion 12 of the cable in which a plurality of core wires 11 are bundled.

【0017】

This marker 30 uses the alphabetic letters "a", "b", etc. as the marker that constitutes the marker. In this embodiment, three markers are arranged to form one marker 20. There is. That is, "aaa", "aab", "aac", and the like each represent one marker 20.

【0018】

The label 20 attached to the covering portion 12 is schematically shown in FIG. Each sign 20 has the same sign continuously in a section defined by a fixed length L, and in this example, three signs 20 are attached in the same section. Further, the sign 20 attached to each section is changed in order for each section so that the same sign 20 does not appear.

【0019】

The length L of the section is determined as follows. The long cable 10 is usually used by cutting it to a predetermined length, but the length to be cut depends on the type of cable. For example, a power cable that transmits a large amount of power over a long distance is not cut to a length of 5 cm or 10 cm and is not used, but a lead wire used for wiring in a control panel is cut to such a length. Is used. Taking this point into consideration, the length of the section L is specified as follows. That is, the length L of the section is defined so that the length is shorter than the shortest cutting length based on the shortest length (shortest cutting length) at which the long cable is cut.

【0020】

Therefore, the length L of this section differs depending on the type of long cable. For example, cables used for connecting general electronic circuit boards may be cut in units of several cm, and communication cables used for connecting devices are often cut in units of 50 cm. Cables and land communication cables are usually cut in units of 100 m, and undersea cables are usually cut in units of several kilometers. In this way, the length L of the section may be determined according to the various cables. However, when laying / wiring each cable, the covering portion 12 with the marking 20 is removed from the end portion by a predetermined length and used. Therefore, the distance between the same markings is the length of the covering portion to be removed. It is desirable that the intervals are shorter than that.

【0021】

In addition, such a sign is attached by printing or the like on the cable covering part in the final process of manufacturing a long cable, but if it is the same cable, the giving condition is given according to the shipping condition such as the length at the time of shipment. It is not necessary to change the markings, and the markings may be changed and attached to one long cable in a predetermined order. Further, the portion to be labeled may be the outer covering portion 13 that covers the outside of the covering portion 12 (FIG. 1). Further, as illustrated in FIG. 1, the example is not limited to the example in which the marker 20 is attached in a straight line, and for example, a spiral is drawn on the surface of the covering portion 12 along the length direction of the long cable 20. , The long cable may be arranged from the beginning to the end.

【0022】

Next, how to use such a long cable 10 will be described. First, the long cable 10 is cut within the leftmost section in FIG. 2, and this cut portion is used as the starting end of the cable to be divided. And from this beginning, the desired cable length l₁And cut this long cable 10 at the corresponding position. The desired cable length l₁Is larger than the length of the section L as described above. Assuming that the control number of the cable cut out by this cutting process is cable number 1, the start side of the cable of this cable number 1 is marked with a sign 20 represented by "aaa", and the end side is marked with "aaa". A sign 20 labeled "aab" is attached. The sign on the start side is called the "start code", and the sign on the end side is called the "end code". The two signs "aaa" and "aab" obtained in this way are used as identification marks for the cable of cable number 1.

【0023】

Then, from one end of the remaining long cable, the desired length l₂When the cable is cut, the start side of the cut cable will be marked with "aab" and the end side will be marked with "aad". Assuming that the control number of the cable cut out by this cutting process is cable number 2, the cable of this cable number 2 is given a start code "aab" and an end code "aad".

【0024】

In this way, long cables 10 are cut out in order, and by reading the signs at both ends of the cut out cables, a cable management table as shown in FIG. 3 is created. Since the cable number of each cable and the corresponding "start code" and "end code" pair are determined to be one-to-one, the pair of "start code" and "end code" can be identified for each disconnected cable. It can be used as a marker. Even if the "start code" and "end code" are input to the management table by exchanging each other, they are managed by the combination of the "start code" and the "end code" on the management table. No problem will occur.

【0025】

By referring to the management table, it is possible to recognize which cable the cable including this sign is by simply recognizing the sign 20 attached in the middle of the cable. For example, if the sign 20 attached in the middle of the cable is "aae", the cable containing this sign can be found to be the cable with cable number 3 by referring to the management table in FIG.

【0026】

Further, even if the cable is cut once, if it is cut under the above-mentioned conditions, even if it is cut again, the signs appearing at both ends of the cable can be used as the identification mark of the cable. In Fig. 4, the cables with cable numbers 3 and 4 are cut again, new cable numbers 5 to 8 are added, and the signs 20 appearing at both ends of each cable are assigned to each cable and displayed on the cable management table. The described example is shown.

【0027】

Here, another embodiment of the long cable will be described with reference to FIG. In this example, it is specified that the shortest cutting length described above is longer than 1/2 of the length L of this section. By specifying in this way, the same sign, for example, "aaa" and "aaa" may appear at both ends of the cut cable, but multiple cables with the same sign are cut out. There is no such thing. Therefore, even in this case, the set of signs appearing at both ends of the cable can be used as the identification mark of each cable.

【0028】

Further, another embodiment will be described with reference to FIG. FIG. 6 shows a state in which a single-core lead wire 31 having a label 20 attached to the covering portion is cut and bundled to form a wiring bundle 30. When forming the wiring bundle 30, each time each lead wire 31 is cut to a certain length, a sign (indicated by "aaa" or the like in FIG. 6) attached to both ends thereof is displayed in FIG. 3 above. Describe in the management table such as. By using such a management table, it is possible to recognize which connection end of the lead wire appearing on one end side of the wiring bundle 30 is conductive with which connection end on the opposite side. If each sign moves up or down in order, the continuity relationship between both connection ends can be recognized from the magnitude relationship of the signs appearing on each side without using the management table.

【0029】

In each of the above-described embodiments, an example of continuously cutting out a cable from a long cable has been shown. For example, as shown in FIG. 5, the cable of cable number 1 and the cable of cable number 2 are separated from each other. Even if it is cut out, it does not cause any trouble.

【0030】

In addition, although alphabets such as "a" and "b" are illustrated as markers, it is also possible to use numbers represented by binary numbers, decimal numbers, and other codes, and in order. It is desirable that the indicator is incremented.

【0031】

Further, as other signs, in addition to those that can be visually confirmed, barcodes, characters that can be read by OCR (Optical Character Reader), magnetic tape, and the like can also be used. It is also possible to color the covering portion and use it as a label.

【0032】

[Effect of the invention]

As described above, according to the long cable according to the present invention, only a series of such signs are attached to the surface of the covering portion at the manufacturing stage of the long cable, and then the long cable is cut out. Even when using it, it is possible to easily identify each cut-out cable from the signs at both ends thereof.

【0033】

Further, according to the cable identification method according to the present invention, only by cutting a long cable to a predetermined length, different markers are attached to both ends of the cut out cable for each cable. .. Therefore, each cable can be easily identified from the set of signs appearing at both ends of the cut-out cable, and it is not necessary to separately attach an identification mark to each cable as in the conventional case. Become.

[Simple explanation of drawings]

[Figure 1]

It is a perspective view which shows the main part of the long cable which concerns on this Example.

[Figure 2]

It is a schematic diagram for demonstrating the arrangement situation of the sign attached to the covering part of a long cable, and the sign attached at the time of cutting.

[Fig. 3]

It is a figure which shows the opposite relationship between the cable number which becomes a control number, and the cord attached to each cable.

[Fig. 4]

It is a figure which shows the opposite relationship between the cable number which becomes a control number, and the cord attached to each cable.

[Fig. 5]

It is a perspective view which shows the main part of the long cable which concerns on another embodiment.

[Fig. 6]

It is a figure which shows an example of the usage method of the long cable which concerns on this Example.

[Explanation of symbols]

10 ... long cable, 11 ... core wire, 12 ... covering, 13 ... outer covering, 20 ... sign