JPS5818419Y2 - Wiring duct - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a wiring duct for electrical equipment and the like.

Conventionally, there has been a wiring duct of this type as shown in FIG.

Reference numeral 1 indicates electric wires for electrical equipment, etc., and reference numeral 2 indicates a wiring duct for storing the electric wires.

This duct 2 consists of a main body part 2a having a U-shaped cross section and a cover part 6 fixed on the top thereof, and a bolt 3 for fixing this duct 2 is provided on the shield part through a washer 4. .

Moreover, an electric wire pull-out hole 5 for pulling out the electric wire 1 is formed in the side portion thereof.

Next, the case where the electric wire 1 is passed through the duct 2 will be explained with reference to the cross-sectional view of the duct in FIG.

Since the electric wire 1 is normally passed through the bottom of the duct 2, it comes into contact with a duct fixing bolt 3 and its washer 4, which are protrusions inside the duct.

The bolts and washers are made of metal, etc., and the outer sheath of the electric wire 1 is made of vinyl chloride, rubber, Teflon, etc. for insulation.

Therefore, the above structure has the disadvantage that the insulating sheath of the wire is damaged when it touches the edge of a bolt or washer, or when the wire is pulled for wiring or drawing out the wire.

As a result, insulation may deteriorate, voltage resistance may fail, or wires may short-circuit and cause combustion.

In particular, Teflon-coated wires, which have recently been in increasing demand for use in atomic couplants, are extremely susceptible to metal edges.

For this reason, as shown in Figure 3, the bolts and washers for fixing the duct are covered with insulating tape 7, but in this case, the effective area for passing the wires inside the duct decreases, resulting in a poor wire area ratio. be.

This invention was made to eliminate the above-mentioned drawbacks, and the purpose is to provide a wiring duct that can be wired without damaging the wires by fixing the wiring duct with support metal fittings. .

An embodiment of this invention will be described in detail below with reference to FIGS. 4 and 5.

First, in FIG. 4, each part designated by reference numerals 1 to 6 is the same as that in FIG. 1 described above.

However, in this embodiment, a plurality of support fittings 9 having a U-shaped cross section are fixed to the shield portion of the duct 2 at predetermined intervals.

The bolt 3 is provided at the bottom of each support fitting 9 with a washer 4 interposed therebetween.

That is, in this configuration, the duct 2 is fixed using the support fitting 9.

Therefore, with this configuration, since there are no protrusions inside the duct, the electric wires passing through the duct will not be damaged.

It is also possible to pull the electric wires inside the duct for wiring, allowing for smoother wiring.

Furthermore, the effective area for passing the electric wires inside the duct can be taken up entirely inside the duct, and the wire area ratio can also be improved.

In addition, in the above embodiment, if you want to fix the duct more firmly, for example, if you want to fix it vertically, you can lock the wiring duct 2 with the support fitting 9a and fix it vertically as shown in FIG. is also possible.

As described above, according to this invention, the wiring duct is fixed using the support metal fittings, so that the wires passing inside the duct can be wired smoothly without being damaged.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a conventional wiring duct, Fig. 2 is a sectional view thereof, Fig. 3 is a sectional view of the duct with internal protrusions covered, and Fig. 4 is this duct. FIG. 5 is a perspective view of a wiring duct according to an embodiment of the invention. FIG. 5 is a perspective view of a wiring duct according to another embodiment of the invention. 1...Electric wire, 2...Electric wire duct, 2
a...Duct body, 3...Bolt,
5...Wire extraction hole. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] a wiring duct main body having a wiring outlet on the side; a plurality of support fittings attached to the bottom of the wiring duct main body at predetermined intervals with a predetermined space between the bottom and the bottom; A wiring duct consisting of fixing fittings for fixing the duct provided at the bottom of each of these support fittings.