JPH033927Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a lighting duct to which a plug of a lighting device can be directly connected without using an outlet.

[Background Art] Fig. 3 shows a state in which a lighting fixture C is connected to this type of lighting duct A, and Fig. 4 shows the structure of a plug B used for connecting the lighting duct. be. Fig. 5a shows the structure of a conventional lighting duct A, in which a pair of conductive bar holding protrusions 3a, 3b are formed on the inner wall surface of both legs 2 of a main body 1 made of extruded aluminum and having a substantially U-shaped cross section. A conductor bar 4 is held between both protrusions 3a and 3b, and the conductor bar 4 is formed by integrally molding a band-shaped conductor 5 and an insulating coating 6 on the circumferential surface of the band-shaped conductor 5. It is formed by exposing a part of the circumferential surface to the cutout groove 7 of the insulation coating 6.

As shown in FIG. 4, the lighting plug B has a plug blade 8 that contacts the conductor bar 4 of the lighting duct A, and an inner flange 9 provided at the opening of the duct body 1 that engages with the lighting fixture C. An engaging piece 10 that supports the load of the plug B, and a stopper 11 that slides up and down to engage the inner flange 9 and stop the plug B from rotating are provided.

When using, first insert the engaging piece 10 between both inner flanges 9 with the longitudinal direction of the plug B perpendicular to the writing duct A, and rotate it 90 degrees in the direction of the arrow in Fig. 4. As shown in a, the engaging piece 10 is inserted into the inner flange 9.
At the same time, the plug blade 8 is brought into contact with the band-shaped conductor 5 of the conductor bar 4. At this time, the stopper 11 engages with the inner flange 9 by the action of a spring (not shown) and locks the plug B. When removing the lighting fixture C, the lock can be released by pulling down the stopper 11.

However, in the above conventional structure, as shown in FIG. 5b, the conductor bar 4 is caulked and fixed by pressing the upper and lower protrusions 3a and 3b in the direction of the arrows, so the broken line c shows the conductor bar 4. As shown in FIG. 2, the center of the conductor bar 4 is shifted, causing variations in its vertical position (distance 1), which causes poor contact between the plug blade 8 and the strip-shaped conductor 5.

[Purpose of the invention] The present invention was devised in view of the above points, and its purpose is to provide a lighting method that can eliminate variations in the mounting position of conductor bars and prevent poor contact of the lighting plug. lies in providing the structure of the duct.

[Disclosure of the invention] However, the lighting duct according to the invention is
A pair of protrusions for holding conductive bars are provided protrudingly on the inner wall surface of both legs of a main body made of extruded aluminum material and having a substantially U-shaped cross section, and a band-shaped conductor and an insulating coating on its peripheral surface are integrally molded. A lighting duct in which a conductor bar having a part of its circumferential surface exposed in a notched groove of an insulating coating is held between the pair of protrusions,
One side end of the conductor bar is fitted into a groove provided in one of the pair of protrusions, and the other protrusion is pressed onto the other side end of the conductor bar and fixed by caulking. , is characterized in that one of the pair of protrusions is used for positioning, and only the other protrusion is plastically deformed, thereby preventing variations in the mounting positions of the conductor bars.

[Example] Fig. 1 shows an example of the present invention, in which a duct body 1 made of extruded aluminum and having a substantially U-shaped cross section.
A pair of conductive bar holding protrusions 3a, 3b are provided protrudingly on the inner wall surface of both legs 2, one of the protrusions 3a, 3b is used for caulking and fixing, and the other 3b is used for positioning. First, as shown in FIG. 2a, one side end of the conductor bar 4 is fitted into the groove 12 provided on the positioning protrusion 3b, and then as shown in FIG.
As shown in the figure, the conductor bar 4 is held between the two protrusions 3a and 3b by pressing the caulking fixing protrusion 3a against the other side end of the conductor bar 4 and plastically deforming the protrusion 3a. The conductor bar 4 is formed by integrally extruding a band-shaped conductor 5 and an insulating coating 6 provided on its circumferential surface, and a notched groove with both edges having a chevron-shaped cross section is formed in a part of the circumferential surface of the insulating coating 6. 7 is formed, and the band-shaped conductor 5 is exposed in this notched groove 7.

According to the above configuration, when one side end of the conductor bar 4 is pressed by the caulking fixing protrusion 3a and caulked and fixed, the conductor bar 4
Since the other side end portion of the conductor bar 4 is in close contact with the inner wall surface of the duct body 1 and the positioning protrusion 3b, there is no possibility of variation in the vertical position of the conductor bar 4, that is, the distance l.

[Effects of the invention] As described above, the present invention allows one side end of the conductor bar to fit into the groove provided on one side of the protrusion for holding the conductor bar of the lighting duct, and Since the other protrusion is pressed against the end and fixed by caulking, the extremely simple structure has the advantage of eliminating variations in the mounting position of the conductor bar and preventing poor contact between the conductor bar and the plug. .

[Brief explanation of drawings]

Fig. 1 is a sectional view showing one embodiment of the present invention;
Figures a and b are sectional views of the main parts showing the manufacturing process of the above, Figure 3 is a perspective view showing how this type of lighting duct is used, Figure 4 is a perspective view of the plug used in the above, and Figure 5 a is a A cross-sectional view of the conventional example, b and c are cross-sectional views of essential parts showing the manufacturing process of the same. 1...Duct body, 2...Legs, 3a, 3b...
...Protrusion, 4...Conductor bar, 5...Strip conductor, 6...
... Insulation coating, 7 ... Notch groove, 9 ... Inner flange, 13 ...
...concave groove.

Claims (1)

[Scope of utility model registration request] A pair of protrusions for holding conductive bars are provided protrudingly on the inner wall surface of both legs of a main body made of extruded aluminum material and having a substantially U-shaped cross section, and a band-shaped conductor and an insulating coating on its peripheral surface are integrally molded. In the lighting duct, a conductor bar having a part of its circumferential surface exposed in a notched groove of the insulation coating is held between the pair of protrusions, one side end of the conductor bar is held between the pair of protrusions. A lighting duct which is fitted into a groove provided on one side of the conductor bar and fixed by pressing the other side end of the conductor bar with the other protrusion.