JPH0452889Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a cable for power supply and control to mobile equipment.

[Prior Art] Currently, cable carriers are generally used for electric wires, cables, and piping (hoses) for power supply and control of parallel moving parts of machine tools, transfer machines, and the like. As shown in FIG. 5, for example, the cable carrier 1 has a structure in which cables 2, hoses 3, etc. are separated one by one and supported by support members 4 that are bendable in the longitudinal direction.
With this structure, no particular problems would occur unless the cable type was selected incorrectly. However, perhaps due to the recent demand for downsizing of equipment, cable carriers are designed to store cables, hoses, etc. all at once in a cable carrier 5 or 5a that can be bent in the longitudinal direction, as shown in Figure 6 or Figure 7. Structures such as Also used is a flat cable in which the cable core and hose are integrally formed with an extruded coating layer.

[Problems to be solved by the invention] However, the cable carrier 1 having the configuration shown in FIG. 5 inevitably becomes large in size. Furthermore, if the cables shown in Figures 6 and 7 are supported all at once by a cable carrier, it is possible to reduce the size to some extent, but it is difficult to lay the cables in an orderly arrangement, and It was inevitable that they would not be in the same position, but in different places. In this way, when a stored cable or the like is bent and used, the cable inevitably ends up on the outside or inside of the center of bending to the cable carrier. Therefore, the cables are subjected to tensile force or compressive force (bending force), and as the number of bends increases, the cables buckle and break.

In addition, although the above-mentioned problems are solved in the flat cable, when the flat cable 6 is used in a bent state between the connection ends 7 and 8 as shown in FIGS. 3 and 4, the flat cable 6 In order to appropriately reduce the natural bending radius R, the cable 6
If the rigidity of the cable 6 is reduced, as shown in FIG. 3, if the cable length is long, the intermediate portion 6a will hang down, which may hinder the movement of the equipment or cause damage to the cable 6.

The object of this invention is to provide a flat cable that suppresses the bending direction, which makes it possible to omit the cable carrier that causes such buckling and breaking accidents.

[Means for solving the problem] In this invention, when the electric wires, cables, hoses, etc. that form the wire core are integrated to form a flat cable, a cable with high tensile strength, low elongation, and low rigidity that suppresses the bending direction is used. A flat cable is constructed by arranging one or more cables at positions different from the parallel center position of each wire core.

[Function] Therefore, it has appropriate rigidity in the bending direction, the cable carrier can be omitted, and the wiring space can be reduced in size.

[Example] Hereinafter, an example of this invention will be described based on the drawings. FIG. 1 is a cross-sectional view of a flat cable according to an embodiment of the invention, and FIG. 2 is a side sectional view taken along the line - in FIG. 1. That is, the bending direction restraining type flat cable 10 has, for example, three cable cores 11 arranged in parallel in the center and hoses 12 at both ends, and there is a large tensile strength between the cable cores 11 and the hoses 12, so that the cable cores 11 are arranged in parallel. A bending direction control cable 13 having a small diameter and low rigidity is arranged off-center on the lower side, and the entire cable is covered with a flexible protective sheath 1.
4 and is formed into a flat shape. The material constituting the cable 13 is, for example, aramid fiber, carbon fiber, or boron fiber.

If the rigidity of the cable 10 is reduced in order to reduce the natural bending radius R of the flat cable 10, as shown in Fig. 3, if the cable length is long, the middle portion will sag, which will hinder the movement of equipment. There is a risk of damage to the cable. If the rigidity of the cable is increased to prevent this, the natural bending radius R' will increase as shown in FIG. 4, resulting in problems such as hitting other structures.

In the flat cable configured in this way, the second
When bent in direction A in the figure, the cable 1 for suppressing the bending direction
3 will be on the outside of the bending center and will be stretched. Since this cable 13 is made of a material with low elongation, it does not stretch, that is, it does not bend. Next, when the cord 13 is bent in the direction of the mouth shown in FIG.
Since it is made of , it can be easily bent.

Therefore, by appropriately reducing the rigidity of the cable 10 and reducing the natural bending diameter in the direction B shown in FIG. 10 can be given smooth movement and bending action.

[Effects of the invention] As explained above, according to this invention, it is possible to omit the cable carrier that causes wire breakage.
Further, by using a compact flat cable, the wiring space can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing a flat cable according to an embodiment of the present invention, Fig. 2 is a side sectional view taken along the - line in Fig. 1, and Fig. 3 is a normal use of a flat cable. Figure 4 is a diagram showing the state of use of a highly rigid flat cable, Figure 5 is a sectional view of a conventional cable carrier, Figures 6 and 7 are diagrams showing the state of use.
The figure is a cross-sectional view of a recent cable carrier. 10...Bending direction suppressed flat cable, 11...
...Cable core, 12...Hose, 13...Bending direction restraining cable, 14...Protection sheath.

Claims (1)

[Scope of Utility Model Registration Claim] A flat type in which the required number of wire cores made of any one or any combination of cables, insulated wires, cable cores, and hoses are arranged in parallel and integrated with a protective sheath on the outside. A bending direction restrained flat cable characterized in that one or more cables having high tensile strength, low elongation, and low rigidity are arranged at a position different from the parallel center position of each wire core.