JPH0228631Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to a power supply device for wiring ducts.

[Background technology]

Conventional examples are shown in FIGS. 7 to 13. The power supply device 50 is attached to the end of the wiring duct 51, and the plug blade 52, which is the power supply terminal of the power supply device 50, contacts the conductor 53 of the wiring duct 51, and both are connected to each other by the set screw 54.
By tightening with a driver 55 etc., the 11th
As shown in the figure, attach the wiring duct 5 to the tip of the set screw 54.
1 and the power supply device 50 is pressed by the reaction.
The insertion part 56 of the wiring duct 51 is inserted into the wiring duct 51.
It is pressed against the hook part 58 of the open groove 57 and is held in a fixed state.

However, since it was fixed only with the set screw 54, there was a drawback that the power supply device 50 easily moved in the vertical direction N as shown in FIG. 12, and in the horizontal direction M as shown in FIG. 13. As a result, the groove 57 of the wiring duct 51 opened, resulting in poor contact between the conductor 53 and the plug blade 52.

[Purpose of invention]

The purpose of this invention is to provide a power supply device for a wiring duct that can securely fix the power supply device to the wiring duct.

[Disclosure of invention]

The power supply device for a wiring duct of this invention is connected to the wiring duct by a guide plate inserted between the ribs on the outer upper surface of the wiring duct, and a clamping part clamped to the hook part of the opening groove of the wiring duct. It is characterized by being fixed with a set screw. Since the power supply device is positioned in two places, the guide plate and the holding part, movement of the power supply device up and down and left and right can be suppressed.

An embodiment of this invention will be explained based on FIGS. 1 to 6. In the figure, 1 is a wiring duct;
2 is a power supply device. As shown in Fig. 2, the wiring duct 1 has a duct body 3 having a metal (steel plate) core 4 having a substantially U-shaped cross section, with an insulator 5 coated on the inner and outer surfaces by simultaneous molding, and a conductor holding portion formed from the insulator 5 on the inside. 6 is extended to hold a high capacity (100A) conductor 7 and a small capacity (20A) conductor 8. Further, the opening groove 9 of the wiring duct 1 is integrally provided with a hook portion 10 at the opposing portion, and a pair of ribs 11 made of an insulator 5 are integrally formed on both sides of the outer top portion.

The power supply device 2 includes a terminal block 13 on the bottom surface of a substantially rectangular base 12, and a high-capacity wire lead-in hole (knock-out type).
14 and small capacity electric wire entry hole (knock-out type)
15 are arranged in a straight line in the longitudinal direction, and the terminal block 13
is attached to the mounting base 12 with screws 16. The terminal block 13 has a high-capacity power supply terminal 17 and a plug blade 18 that is a small-capacity power supply terminal in the opposite direction to the lead-in holes 14 and 15, and has wire connection holes 19, 20 and It has terminal screws 21 and 22. The mounting base 12 has cover mounting portions 23 on both ends.
24 hangs down, and a cover 25 is attached to this with screws 26. Further, an upper guide plate 27 having a width corresponding to the width between the ribs 11 of the wiring duct 1 is extended from the end of the mounting base 12 on the side where the power supply terminal protrudes, and a holding part is provided at the lower end of the cover mounting part 24. A lower guide plate 28 is extended, a rotation stopper piece 29 is bent at the tip of the lower guide plate 28, and a fixing fitting 3 is attached to the upper surface of the lower guide plate 28.
0 and set screw 31 on lower guide plate 2.
It is loosely inserted into the center hole of 8 and screwed onto the fixing metal fitting 30, and a spacing spring 30' is interposed between the lower guide plate 28 and the fixing metal fitting 30.

In the power supply device 2, conduits 31 and 32 supported by a ceiling frame (not shown) are fitted into the lead-in holes 14 and 15, and a high-capacity electric wire 33 and a small-capacity electric wire are drawn out from the conduits 31 and 32. 34 to connection hole 19, 2
0, and the wires are connected by tightening the terminal screws 21 and 22. In addition, the power supply device 2 and the wiring duct 1 are
As shown in FIGS. 5 and 6, at the same time as the upper guide plate 27 is inserted between the ribs 11, the hook part 10 of the wiring duct 1 is inserted between the lower guide plate 28 and the fixing metal fitting 30, and the third As shown in the figure, by tightening the set screw 31 from below with a screwdriver 35 or the like, the fixing bracket 30 and the lower guide plate 28
The hook portion 10 is held between the wiring duct 1 and the power supply device 2 to connect the wiring duct 1 and the power supply device 2. At the same time, the high-capacity power supply terminal 17 is inserted and connected to the high-capacity conductor 7 of the wiring duct 1, and the plug blade 18 is press-connected to the small-capacity conductor 8.

As described above, in the power supply device 2, the lower guide plate 27 is guided between the ribs 11, so the left and right movement is restricted, and the upper guide plate 27
and the clamping part (lower guide plate 28, fixing bracket 3)
Since they are connected at two points 0) and fixed with set screws 31, vertical movement is also restricted. As a result, the opening 9 of the wiring duct 1 does not open as in the conventional case, and the contact between the conductors 7, 8 and the plug blade 18, etc. does not become poor, and accidents such as heat generation and short circuits are less likely to occur.

[Effect of idea]

According to this invention, the connection to the wiring duct can be reliably fixed, and electrical contact failures can be prevented.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of an embodiment of this invention, Fig. 2 is a sectional view of the wiring duct, Fig. 3 is an exploded perspective view of the power supply device, Fig. 4 is a sectional view of the power supply device, and Fig. 5 is a sectional view of the power supply device. 6 is an enlarged sectional view thereof, FIG. 7 is a partially exploded perspective view of the conventional example, FIG. 8 is a broken perspective view of the wiring duct, FIG. 9 is a perspective view of the power supply device, Fig. 10 is a partial sectional view thereof, Fig. 11 is a sectional view showing the set screw, Fig. 12 is a side view,
FIG. 13 is a plan view. 1... Wiring duct, 2... Power supply device, 7, 8...
...Conductor, 9...Open groove, 10...Hook part, 11...
Rib, 27...Upper guide plate, 28...Lower guide plate (clamping part), 30...Fixing metal fitting (clamping part), 31...Set screw.

Claims (1)

[Scope of utility model registration request] a power supply device body having a power supply terminal that contacts an end of a conductor of a wiring duct; a guide plate provided on the power supply device body and inserted between a pair of ribs provided on the upper surface of the wiring duct; A power supply device for a wiring duct, comprising: a clamping portion that is provided on a power supply device body and clamps an end of a hook portion constituting an opening groove of the wiring duct, and a set screw that tightens the clamping portion.