JPS63277414A - Laying method for flat cable - Google Patents

Abstract

PURPOSE:To lay cables so that they may be retained at specified intervals, by inserting a cable interval retainer having inclusion sections in the shape of a comb, through the side of another shorter side section, along the longitudinal direction, at a specified pitch. CONSTITUTION:The one-side shorter side sections 14 of flat cables 1 are made to come in contact with auxiliary girders 4 arranged at the specified pitch of a cable rack 2, and the cables 1 are arranged mutually almost in parallel with each other. Then, a cable interval retainer 3 is pushed in the direction of an arrow head E from a position shown in the virtual line of figure, so that the retainer 3 may be fitted between the cables 1 adjacent to inclusion sections 8, 8, and is inserted from the sides of the other shorter side sections 15 of the cables 1, and with fixtures 10, the retainers 3 and the auxiliary girders 4 are firmly fitted in order. In this manner, at every specified pitch along the longitudinal direction of the cables 1, the cable interval retainers 3 as binding units are inserted, and are fixed on the auxiliary girders 4.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method for laying flat cables.

[Conventional technology and its problems]

In recent years, the demand for electricity in buildings, residences, factories, etc. has increased significantly as the buildings become larger and higher-rise, as well as as air-conditioning equipment increases and various office automation equipment become widespread.

However, if a round cable is used, voltage drop becomes a problem and a large sized cable must be used. Therefore, flat cables with less voltage drop are increasingly used.

However, conventionally, when laying a flat cable, the seventh
As shown in the figure, attach the support fittings to the cable frame a,
A flat cable C was supported by the supporting metal fitting. That is, this supporting metal fitting includes a lower member e having a fitting groove d into which the lower end of the flat cable C fits, and an upper holding member g having a fitting groove f into which the upper end of the cable C fits. A flat cable C was held in a pinched manner by the upper and lower members g and e.

The installation method in this case is to first attach the lower member e of the supporting metal fitting to the cable frame a using fixing tools such as bolts and nuts, then lift the flat cable C and attach the lower member e to the cable frame a. The lower end of the cable C is fitted into the fitting groove d, and then the upper end of the cable C is fitted into the fitting groove r of the upper member g.
After fitting, the flat cable C was held in a pinched manner by fixing the upper and lower members g and e using fixing tools k such as bolts and nuts.

Therefore, in this case, it is necessary to manufacture the above-mentioned support fittings, which increases the cost. Also, since the flat cable C normally weighs 41 g to 20 kg per meter, the lower member e must be lifted by hand. The work of falling into the fitting groove d is very troublesome, and the installation work is inefficient.

SUMMARY OF THE INVENTION An object of the present invention is to solve these conventional problems and provide a flat cable installation method that allows flat cables to be installed simply and quickly.

[Means for solving problems]

The method of laying a flat cable according to the present invention is to
After bringing one short side of a plurality of flat cables into contact and arranging the cables substantially parallel to each other, a cable spacing holder having a comb-shaped interposed part is attached to the other short side of the cable. The cables are inserted from the sides at predetermined pitches along the longitudinal direction, and laid so that the cables are maintained at predetermined intervals.

[Effect]

According to the above-mentioned method, the cables can be laid so that the cables are maintained at a predetermined distance by simply inserting the cable spacing holder, and the cables can be laid in a manner that the cables are not placed in the support metal fittings as in the conventional method. This eliminates the work of lifting and dropping a heavy cable to fit it into the fitting groove of the upper and lower members, and the work of connecting the upper and lower members.

〔Example〕

Hereinafter, the present invention will be explained in detail based on drawings showing examples.

FIG. 1 shows three flat cables l laid by the laying method according to the present invention, and shows the case of horizontal laying.

That is, this flat cable 1 has one arc-shaped short side 1
4 is placed on a cable frame, for example, a child beam 4 of a cable rack 2, and the flat cables 1 are held at a predetermined distance from each other by a cable spacing holder 3 attached to the child beam 4.

As shown in FIG. 2, the flat cable l consists of five conductors 5 made of highly conductive metal arranged in parallel.
, an insulator 6 made of cross-linked polyethylene, etc., covering the conductor 5, and a sheath 7, made of rubber, vinyl chloride, etc., covering the insulator 6, and the whole has a flat oval cross section. The shape is ζ.

The cable spacing holder 3 also serves as a cable binding tool, and has comb-shaped intervening parts 8, 8 interposed between the adjacent flat cables 1, and The flanges 9, 9 at both ends of the enclosing part are connected to the child girder 4 of the cable rack 2.
It is fixed with fasteners 10.10 such as bolts and nuts. That is, this spacing retainer 3 has collar parts 9, 9 connected to both side wall parts 12, 12 of a substantially U-shaped external surrounding part, and the interposed part 8.8 hanging from the upper wall part 13. Fitting grooves 1"x and 11.ll into which the flat cable 1 fits are formed between the side wall parts 12, 12 and the intervening part 8.8.Furthermore, the fitting groove 11 has a width The dimension A is approximately the same as or slightly smaller than the thickness dimension B of the flat cable l, and the depth dimension C
is approximately the same as or slightly smaller than the height of the flat cable 1. Furthermore, the upper end of the fitting 'a11' is shaped into an arc so that the other arc-shaped short side 15 of the flat cable 1 fits therein. Reference numerals 16 and 17 indicate through holes formed through the collar portion 9 and the child beam 4 in order to attach the above-mentioned fasteners 10, respectively. Moreover, when this holder 3 is fixed to the sub-spar 4, one short side portion 14 of the cable 1 and the collar portion 9 are in contact with the sub-spar 4, of course.

Therefore, in order to lay the flat cable 1 according to the laying method of the present invention, first, one short side 14 of the flat cable 1 is laid.
, the child girder 4 arranged at a predetermined pitch of the cable rack 2
... (in this case, the flat cables 1 are placed on the child beams 4...), and the cables 1 are arranged substantially parallel to each other. Then, the cable spacing holder 3 is pushed in the direction of arrow E from the position shown by the imaginary line in FIG. 1 so that the interposed parts 8, 8 are interposed between the adjacent cables 1. , the cable l is inserted from the other short side 15 side, and the holder 3 and the child beam 4 are successively fixed using the fixing tool 10. In this way, along the longitudinal direction of the cable 1, cable spacing holders 3 and 3 are attached as binding tools at predetermined pitches.
Insert ... and fix it to child digit 4...

Therefore, in this case, each cable l is fitted into the fitting groove 11 of the holder 3, and is securely held by the holder 3, with a predetermined spacing between the cables.

Next, FIG. 3 shows a modification of the cable spacing holder 3. In this case, the holder 3 does not use the fixing device 10, but uses a binding member 18 such as a wire, belt, string, etc. Fixed to 4. That is, in this case, the locking groove 19 is formed in the collar portion 9,
The binding member 18 is wound around the locking groove 19 and the child spar 4 to fix the holder 3 and the child spar 4. Further, a cavity 19 is provided in the interposed part 8, and the cavity forming pieces 8a, 8a of the interposed part 8 are elastically deformable in both directions toward and away from each other, and a plate spring is attached to the interposed part 8. The cable 1 is made to have spring properties like a piece, to accommodate slight differences in the thickness dimension B of the flat cable 1, and to securely grip the cable 1.

Further, FIGS. 4 and 5 show still another modification of the cable spacing holder 3, in which the holder has collar portions 9, 9.
, and is not fixed to the sub-spar 4.

That is, the installation method in this case is to place the flat cable 1 on the child girder 4, and then sequentially attach the holder 3 at a predetermined pitch along the longitudinal direction from the other short side 15 side of the cable 1. It's something you insert.

Therefore, in this case, there is no need to form through-holes 17 in the sub-spar 4, and there is no need to make the arrangement pitch of the holders 3 the same as that of the sub-spar 4, making the installation easier. It will be easy.

Although all of the above-mentioned embodiments show only horizontal installation, this method can of course also be applied to vertical installation, as shown in FIG. That is, one short side 14 of a flat cable suspended from a ceiling etc. is brought into contact with a cable rack 2 erected from a floor surface etc.
After arranging the cables 1 substantially parallel to each other, the cable spacing holder 3 shown in FIGS. The holder 3 and the cable rack 2 are then inserted one after another at a predetermined pitch, and the holder 3 and the cable rack 2 are fixed using the fixing tool 10. In addition, even in vertical installation, it is preferable to use the holder 3 shown in FIGS. 3 and 4. In this way, the distance between the cables is maintained even in vertical installations.

It should be noted that the present invention is not limited to the embodiments shown in the drawings, and is free to make design changes without overcoming the gist of the present invention. For example, instead of the cable rack 2, a large number of arms (including metal ) may also be used. In addition, except for the embodiments shown in FIGS. 4 and 5, the cable spacing holder 3 and the cable rack 2 are fixed, but in this case, the holder 3 is not fixed to the cable rack 2, It is also possible to bring an abutting member made of a strip or the like into abutment against one short side 14 of the flat cable 1, and to fix the holder 3 to the abutting member. Furthermore, in the embodiment, there are three flat cables 1, but of course there are a plurality of flat cables 1, for example two,
You are free to use 4, 6 or 8 pieces; in the case of 2 pieces,
The number of intervening parts 8 of the holder 3 is one, and similarly in the case of four,
In the case of three intervening parts 8, the number of intervening parts 8 is five, and in the case of eight intervening parts, the number of intervening parts 8 is seven. In addition, flat cable 1
Of course, the number of conductors 5 is also free. The material of the holder 3 is preferably a non-magnetic material such as aluminum or plastic.

〔Effect of the invention〕

According to the flat cable installation method of the present invention, the work of lifting a heavy cable once and dropping it into the fitting groove d of the lower member e of the support fitting, unlike the conventional work, and the work of the upper and lower members g
, e is eliminated, the installation work becomes extremely simple and can be done quickly, and work efficiency is greatly improved. Furthermore, the cable spacing holder 3 has a simpler structure than conventional supporting metal fittings, and contributes to cost reduction.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a flat cable laid by the method of one embodiment of the present invention, Fig. 2 is an enlarged sectional view of the main part in the laid state, and Fig. 3 is an enlarged sectional view showing a modification of the cable spacing holder. Figure 4 is a perspective view of the installation state when another modification of the cable spacing holder is used; FIG. 2 is a perspective view of a flat cable. FIG. 7 is a sectional view of a main part of a flat cable laid by a conventional method. 1... Flat cable, 3... Cable spacing holder,
8... Interposed part, 14.15... Short side part. Patent applicant Mitsubishi Cable Industries, Ltd. Figure 1 Figure 2 Figure 31A Figure 4 Figure 6 Figure 5 Figure 7

Claims (1)

[Claims] 1. After bringing one short side of a plurality of flat cables into contact with the cable mount and arranging the cables approximately parallel to each other, attach a cable spacing holder having a comb-shaped interposed part to the cables. A method of laying a flat cable, comprising inserting the flat cables at a predetermined pitch along the longitudinal direction from the other short side of the flat cable, and laying the cables so that the cables are maintained at a predetermined interval.