JPS5834917B2 - Wiring duct - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wiring duct which is disposed on a ceiling surface or the like and which supplies power to lighting equipment, etc. by connecting a power receiving plug.

Conventionally, as shown in FIG. 4, a duct main body 1 having a substantially U-shaped cross section
Convex strips 3 are provided so as to protrude from the inner side surface 2 of the side facing each other along the longitudinal direction f, and a concave strip 5 is bored along the longitudinal direction on the tip end surface 4 of each convex strip 3. A wiring duct in which a conductor 6 for supplying commercial power is disposed on the bottom surface of the duct 5 is widely used.

In such wiring ducts, in order to prevent the risk of electric shock when connecting the power receiving plug, the conductor 6
In order to prevent dirt and dust from adhering to the parts, an insulating plate 7 having elasticity such as a plastic film is used.
was often provided as a protective cover.

However, when a protective cover with a structure as shown in FIG. 4 is used, when the plug is inserted, the protective cover is pushed strongly to the back as shown by the dotted line in FIG. If the dust gets inside the protective cover, it becomes impossible to restore it to its original state, and the electric shock prevention and dustproof effects are lost.

The present invention has been made in order to eliminate these drawbacks of the conventional example, and by devising the shape of the protective cover, when the plug is inserted, the protective cover is pushed strongly to the back, and it is not pushed deep into the protrusion. It is an object of the present invention to provide a wiring duct which prevents electrical shock from entering the wiring duct and has a protective cover that has a complete electric shock prevention effect and dustproof effect.

The configuration of the present invention will be explained below with reference to an illustrated embodiment.
As shown in FIGS. 1 to 3, protrusions 3 are provided so as to protrude from the inner side surface 2 of the duct body 1 having a substantially U-shaped cross section so as to face each other along the longitudinal direction. Recesses 5 are bored along the longitudinal direction of the surface 4, a conductor 6 for commercial power supply is provided on the bottom of each recess 5, and an elastic insulating plate 7 is installed along the longitudinal direction of the duct body 1. The duct body 1 bottom 8 extends almost perpendicularly from the position corresponding to the tip surface 4 of each of the protrusions 3, and the extending end is connected to the corner of each of the protrusions 3 on the bottom surface 8 side of the duct body 1. 9, respectively, toward the center of the duct body 1, and then fold back the bent portions in the opposite direction, so that the tips 10 of the folded portions are connected to the inner surfaces 11+ of the grooves 5 on the opening surface side of the duct body 1. They are brought into elastic contact with each other.

The insulating plates 7 inserted into each groove 5 are integrally connected to each other by a connecting plate 12, formed by an integral extrusion method, and inserted from one end of the wiring duct.

Since the insulating plate 7 has elasticity, the tip 10 of the insulating plate 7, due to the elasticity of portions B and D in FIG.
That is, portion A in FIG. 1 is always pressed against the inner surface of the grooved strip 5.

FIG. 2 shows a state in which a power receiving plug 13 is attached.

When installing such a plug 13, rotate the plug 13 by 90 degrees from the state shown in FIG.
into the wiring duct body 1, and insert the insulating plate 7 into the plug 1.
While being pressed and deformed by the head 14 of No. 3, it is rotated to the state shown in FIG.

Therefore, the insulating plate 7 always covers the conductor 6 when the plug 13 is not attached, and prevents dirt and dust from adhering to the conductor 6, as well as reducing the risk of electric shock when the plug is attached. It is something that is done in a way that prevents it.

Next, FIG. 3 shows what happens when the insulating plate 7 is pressed with a finger.
As shown in the figure, the insulating plate 7 is deformed by the rotation of portions B and D, and the vertical portion 15 extending from the connecting piece 12 is not deformed.

Therefore, in the wiring duct of the present invention, the insulating plate 7
The tip 10 of the protrusion 3 does not penetrate deep into the protrusion 3 as shown in the conventional example shown in FIG.

In addition, as shown in FIG. 1, the B part of the insulating plate 7 is
If the insulating plate 7 is brought into contact with the insulating plate 7, displacement of the position of the insulating plate 7 can be prevented.

The present invention is constructed as described above, in which protruding stripes are provided so as to protrude from the inner side surface of the duct main body having a substantially U-shaped cross section so as to face each other along the longitudinal direction, and the longitudinal stripes are provided on the distal end surface of each protruding strip. In a wiring duct in which grooves are drilled along the direction and a conductor for commercial power supply is arranged on the bottom of each groove, an elastic insulating plate is inserted along the longitudinal direction of the duct body on the bottom of the duct body. Each of the protrusions extends approximately perpendicularly from a position corresponding to the tip surface thereof, and the extending portion is bent toward the center of the duct body near the corner of each protrusion on the bottom side of the duct body. , the bent portion is folded back in the opposite direction, and the tip of the folded portion is configured to come into elastic contact with the inner surface of each of the grooves on the duct body opening side, so that only in the portion where the power receiving plug is attached. The insulating plate is pushed in, so the part where the plug is not attached is always covered with the insulating plate, which has the advantage of preventing dirt and dust from adhering to the conductor part, and also prevents pins etc. from directly attaching. Conductor molecules are less likely to come into contact with each other, and the protective cover formed by the insulating plate operates separately on the left and right sides, which reduces electrical accidents such as short circuits between conductors and electric shocks to the human body, improving safety. Furthermore, even if someone pushes the insulating plate with their fingers, the tip of the insulating plate will not penetrate deeper than the protruding stripes, as shown in Figure 2, and the finger will not be pushed. Since the protective cover always returns to its original state when released, there is an advantage that the dust-proofing effect and electric shock-preventing effect of the protective cover are not impaired.

Furthermore, in the wiring duct of the present invention, since the protective cover made of an insulating plate is deformed by the rotational movement of portions B and D in FIG. Further, since an insulating plate having such a shape can be attached by simply inserting it from one end of the wiring duct, it is easy to attach, and therefore has the advantage that the cost of the product can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of one embodiment of the present invention, FIGS. 2 and 3 are cross-sectional views showing the same usage condition, and FIG. 4 is a cross-sectional view of a conventional example. 1...Duct body, 2...Inner surface, 3...Convex strip,
4... Tip surface, 5... Concave stripe, 6... Conductor, 7...
- Insulating plate, 8... Bottom surface, 9... Corner part, 10... Tip, 11... Inner surface.

Claims (1)

[Claims] 1 Convex stripes are provided so as to protrude from the inner side surface of the duct main body, which has a substantially U-shaped cross section, so as to face each other along the longitudinal direction, and a concave strip is bored along the tip surface of each protruding strip (in the longitudinal direction). A conductor for commercial power supply is arranged on the bottom of each concave strip, and an elastic insulating plate is inserted along the longitudinal direction of the duct body from a position corresponding to the tip of each of the convex strips on the bottom of the duct body. The extending end is bent toward the center of the duct body near the corner of the bottom surface of the duct body of each of the protrusions, and the bent part is folded back in the opposite direction to form a folded part. A wiring duct characterized in that the tips of the grooves are brought into elastic contact with the inner surfaces of the duct body opening surfaces of the grooves.