JPS6248116B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a wiring duct hanging structure for hanging heavy objects such as assembly drivers and lighting equipment from a wiring duct using a duct hanger in a factory or the like.

[Background technology]

In this type of conventional wiring duct hanging structure, the metal duct hanger may be mistakenly inserted into the wiring duct through the opening, and at this time the duct hanger may come into contact with the conductor in the wiring duct. This was extremely dangerous as there was a risk of electric shock to the workers.

[Purpose of the invention]

An object of the present invention is to provide a wiring duct suspension structure that can sufficiently ensure safety even when a duct hanger is mistakenly inserted into an opening of a wiring duct.

[Disclosure of the invention]

The wiring duct suspension structure of the present invention includes a lip groove-shaped duct body having a lip on the lower surface and protruding stripes on both sides of the web, and a strip groove formed on the inner surface of the flange of the duct body on the top surface. a wiring duct having an insulative conductor support having an insulating conductor support and a conductor disposed at the bottom of the groove; a groove-shaped hanger body having elasticity and surrounding both flanges and lips of the duct body; a hanger for a duct, the hanger having a duct hook part formed by folding the tips of both flanges of the hanger body inward into a substantially arc shape and abutting the web of the duct body beyond the protrusion; The duct hook part is arranged so that the outer surface of the duct hook part is in contact with both opening edges of the groove and the outer surface of the duct hook part between both opening edges of the groove is not in contact with the conductor. While setting the radius of curvature, the inner surface of the groove-shaped hanger body is brought into contact with the tip of the lip of the duct body, and the outer surface of the duct hook part is brought into contact with the opening edge of the groove farther from the opening of the duct body. The bending angle of the duct hook with respect to the flange of the duct main body is set so that the tip of the duct hook does not come into contact with the conductor when the duct hook is in contact with the conductor.

According to the configuration of the present invention, protrusions are provided on both side edges of the web of the rip-groove duct body, and
The tips of both flanges of the grooved hanger body are each folded inward in a substantially arc shape to form a duct hooking part, and the grooved hanger body Even if both flanges expand, the expansion is restricted by the duct hook hitting the protruding strip, and the duct hanger will not come off from the wiring duct.

In addition, the radius of curvature of the duct hook is adjusted so that when the outer surface of the duct hook comes into contact with both opening edges of the groove, the outer surface of the duct hook between both opening edges of the groove does not come into contact with the conductor. At the same time, when the inner surface of the groove-shaped hanger body is brought into contact with the tip of the lip of the duct body, and the outer surface of the duct hook part is brought into contact with the opening edge of the groove on the side far from the lip of the duct body, the duct hook part The bending angle of the duct hook with respect to the flange of the duct body is set so that the tip of the duct does not come in contact with the conductor, so when attaching the duct hanger to a wiring duct that is being supplied with electricity, the duct hook can be bent from the lip of the duct body. Even if the duct is inserted into the interior by mistake, the duct hook will not come into contact with the conductor, thereby avoiding electric shock and providing high safety.

Embodiment An embodiment of the present invention will be described based on FIGS. 1 to 5. This wiring duct suspension structure includes a lip groove-shaped duct body 1 with a lip located on the lower surface and protrusions 1A and 1B on both side edges of the web and the base end of the flange, and an inner surface of the flange of the duct body 1. A wiring duct comprising: an insulating conductor support 1b formed with grooves 1a on the top surface; and conductors 8 to 11 disposed at the bottom of the grooves 1b; and the duct is made of an elastic metal plate. Main body 1
A groove-shaped hanger body 2 surrounds both flanges and a lip, and a groove-shaped hanger body 2 is formed by folding the tips of both flanges of the groove-shaped hanger body 2 inwardly into a substantially arc shape, and extends beyond the protrusion 1A to the duct. Main body 1
a duct hanger having a duct hooking part 4 that comes into contact with the web of the groove 1a, with the outer surface of the duct hooking part 4 in contact with both opening edges of the groove 1a The outer surface of the duct hook part 4 between the conductors 8 to
The radius of curvature R of the duct hook part 4 is set so that it does not come into contact with the duct hook part 11, and the inner surface of the groove-shaped hanger body 2 is brought into contact with the lip tip of the duct body 1, and the outer surface of the duct hook part 4 is brought into contact with the opening edge of the groove 1a on the side far from the lip of the duct body 1, and the tip of the duct hook 4 touches the conductor 8 to 11.
The bending angle θ of the duct hook part 4 with respect to the flange of the duct body 1 is set so that the duct hook part 4 does not come into contact with the duct body 1, and is used, for example, to hang an assembly driver etc. from a wiring duct via a duct hanger. Ru.

In this case, the wiring duct has two pairs of conductors 8 to 11 arranged inside a metal core material 7 in the shape of a reverse rip groove, and the core material 7 and the conductors 8 to 11 are integrated with resin 12 in an insulated state. Specifically, resin 12
Groove 1 provided on the top surface of conductor support 1b formed by
Conductors 8 to 11 are embedded in a semi-exposed state at the bottom of a, so as to come into contact with the blade of a plug (not shown).

The duct hanger has an elastic tongue piece 3 integrally formed on the inner peripheral edge of the through hole 2a of both flanges of the grooved hanger body 2, and as described above, the ends of both flanges of the grooved hanger body 2 are folded inward. At the same time, the end of the elastic tongue piece 3 is folded inward to form a duct holding part 5.
A notch 4a is formed at the center of the tip.

In this duct hanger, the groove-shaped hanger body 2 surrounds both flanges and the lip of the duct body 1, and the duct hook part 4 goes over the upward protrusion 1A and comes into elastic contact with the upper surface of the duct body 1, and holds the duct. The portion 5 is in elastic contact with the lower surface of the lip of the duct body 1 over the downwardly directed protrusion 1B.

The depth of the notch 4a is set so that the inner bottom surface is located below the lower surface of the upwardly directed protrusion 1A. In addition, the groove-shaped hanger body 2 has an outwardly bulging portion 2b for inserting a driver at the lower portion of both flanges to create a gap between the lower portions of both flanges and both flanges of the duct body 1. ing. A hanging bolt 6 is fixed to the central piece, and an electric screwdriver or the like is suspended from this hanging bolt 6.

Next, attachment and detachment of the wiring duct to the duct hanger will be explained. First, to install, resist the elasticity of the grooved hanger body 2, expand both flanges, face the wiring duct, lift the grooved hanger body 2, cover half of the grooved hanger body 2 over the wiring duct, and hold the duct. The tip of the portion 5 is brought into contact with the web of the duct body 1, and in this state, further force is applied to the duct hanger to release the elastic tongue piece 3 and the duct holding portion 5.
When the tip of the duct hook part 4 is lifted up against the elasticity of the duct body 1, and the tip of the duct hook part 4 is released from the upwardly directed protrusion 1A, the tip of the duct hook part 4 comes into elastic contact with the web of the duct body 1, and the process is completed.

Next, for removal, as shown in FIG. 3, first insert the tip of an electrician's screwdriver 13 into the gap between the inner bottom surface of the notch 4a provided in one duct hook 4 and the upper surface of the upwardly directed protrusion 1A. By inserting it and rotating the driver 13 in the direction of arrow B with point A as the fulcrum, the tip of the duct hook 4 is lifted off the top surface of the duct body 1 and the upward protruding strip 1 is inserted.
A, and as shown in Fig. 5, rotate the duct in the direction of arrow B to make the tip of the duct hook part 4 cross over the upwardly directed protrusion 1A in the opposite direction to when it was installed. The section 4 is removed from the duct body 1. Convex strip 1 with the tip of the duct hook 4 facing upward
Although the duct main body 1 is pushed up when crossing A, the force is absorbed by the extension of the elastic tongue piece 3 and the duct holding part 5.

The same operation as above is performed for the other duct hook part 4, and then the duct hanger is pulled down to complete the process.

As described above, in this embodiment, the protruding stripes 1A are provided on both side edges of the web of the rip groove-shaped duct body 1, and the tips of both flanges of the groove-shaped hanger body 2 are each folded inward in a substantially arc shape. A duct hook part 4 is formed, and a protrusion 1A is formed on the web of the duct body 1.
Since the duct hook 4 is brought into contact with the duct hook 4, even if both flanges of the grooved hanger main body 2 expand, the expansion is restricted by the duct hook 4 hitting the protrusion 1A, and the duct hanger is connected to the wiring duct. It will never come off.

Also, when the outer surface of the duct hooking portion 4 is brought into contact with both opening edges of the groove 1a, the outer surface of the duct hooking portion 4 between both opening edges of the groove 1a does not come into contact with the conductors 8 to 11. While setting the radius of curvature R of the duct hook 4, the inner surface of the groove-shaped hanger body 2 is brought into contact with the tip of the lip of the duct body 1, and the outer surface of the duct hook 4 is placed in the groove on the side farther from the lip of the duct body 1. The bending angle θ of the duct hook 4 with respect to the flange of the duct main body 1 is set so that the tip of the duct hook 4 does not come into contact with the conductors 8 to 11 when brought into contact with the opening edge of the duct 1a, so that power is not supplied. When attaching a duct hanger to a wiring duct, if the duct hook part 4 is accidentally inserted into the inside from the lip of the duct body 1, the duct hook part 4
does not come into contact with the conductors 8 to 11, and direct and indirect accidents due to electric shock can be avoided, resulting in high safety.

Note that the duct hooking part 4 and the duct holding part 5 do not have to come into elastic contact with the wiring duct.

〔Effect of the invention〕

According to the wiring duct hanging structure of the present invention, protrusions are provided on both side edges of the web of the lip groove-shaped duct body, and the tips of both flanges of the groove-shaped hanger body are each folded inward in a substantially arc shape. The duct hook is formed and the duct hook touches the web of the duct body beyond the protrusion, so even if both flanges of the grooved hanger body expand, the expansion will prevent the duct hook from hitting the protrusion. The duct hanger will not come off the wiring duct.

In addition, the radius of curvature of the duct hook is adjusted so that when the outer surface of the duct hook comes into contact with both opening edges of the groove, the outer surface of the duct hook between both opening edges of the groove does not come into contact with the conductor. At the same time, when the inner surface of the groove-shaped hanger body is brought into contact with the tip of the lip of the duct body, and the outer surface of the duct hook part is brought into contact with the opening edge of the groove on the side far from the lip of the duct body, the duct hook part The bending angle of the duct hook with respect to the flange of the duct body is set so that the tip of the duct does not come in contact with the conductor, so when attaching the duct hanger to a wiring duct that is being supplied with electricity, the duct hook can be moved from the lip of the duct body. Even if the duct is inserted into the interior by mistake, the duct hook will not come into contact with the conductor, thereby avoiding electric shock and providing high safety.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one embodiment of the present invention, FIGS. 2A and 2B are explanatory views of its operation, and FIGS. 3 to 5 are sectional views showing the removal procedure. ...Wiring duct, ...Duct hanger, 1...Duct body, 1A, 1B...Convex strip, 1a...Strip groove, 1b
...Conductor support body, 2...Groove hanger main body, 4...Duct hook part, 5...Duct holding part, 8-11...Conductor.

Claims (1)

[Claims] 1. A lip groove-shaped duct body with a lip located on the lower surface and protrusions on both side edges of the web;
A wiring duct comprising: an insulating conductor support formed on the inner surface of a flange of the duct body and having a groove on the top surface; and a conductor disposed at the bottom of the groove; A grooved hanger body that surrounds both flanges and the lip, and a grooved hanger body formed by folding the tips of both flanges of this grooved hanger body inwardly into a substantially arc shape so as to extend beyond the convex strip and contact the web of the duct body. a duct hanger having a duct hooking portion in contact with the duct hooking portion, and with the outer surface of the duct hooking portion in contact with both opening edges of the groove, the duct hooking portion is connected between both opening edges of the groove. The radius of curvature of the duct hook part is set so that the outer surface does not come into contact with the conductor, and the inner surface of the groove-shaped hanger body is brought into contact with the tip of the lip of the duct body, and the outer surface of the duct hook part is brought into contact with the conductor. The bending angle of the duct hooking portion with respect to the flange of the duct body is such that the tip of the duct hooking portion does not come into contact with the conductor when it is in contact with the opening edge of the groove farther from the opening of the duct body. Wiring duct hanging structure.