JPS6155231B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a method for inserting a plug into a bus duct socket,
This invention relates to a plug-in device that connects to a bus duct conductor with a clip to branch out a circuit.

When installing or removing the plug-in device 3 while the conductor 2 of the bus duct 1 remains live, be sure to close the switch 5 of the plug-in device 3 to prevent the risk of sparks occurring between the conductor 2 and the clip 4. Must be left open.

However, it is troublesome to open the lid of the plug-in device 3 and check the operating position of the knob 51 of the switch 5 each time. Even if it is an externally operated type, it is difficult to check whether the switch 5 is open or closed by looking at the position of the operating handle 6 unless you are used to it.

Therefore, the plug-in device 3 may be attached to or removed from the bus duct 1 without checking whether the switch 5 is open or closed, and if the switch 5 is closed, there is a risk of sparks being generated as described above. .

An object of the present invention is to provide a plug-in device that is easy to handle and can prevent the above-mentioned accidents.

The configuration of an embodiment of the externally operated plug-in device shown in the drawings will be described below. The legs 71, 71 of the U-shaped lever 7, which straddles the switch 5 and is engaged with the knob 51, are connected to the plug-in equipment box 31.
with shafts 8, 8, one shaft 8 protrudes outside the box 31 to support the center of the operating handle 6,
It forms a seesaw-shaped handle. Drawstrings 9 and 10 are attached to both ends of the handle 6, respectively. When the drawstrings 9 and 10 are pulled alternately, the knob 51 of the switch 5 is operated via the opening/closing mechanism consisting of the handle 6, the shaft 8, and the U-shaped lever 7.

A pair of display rods 11, 11 are arranged on both sides of the switch 5 in the plug-in device box 31, and each rod 11
One end of each is locked to the leg 71 of the U-shaped lever 7, respectively. The other end of each rod 11 faces through holes 12, 12 formed in the box wall, respectively.

Therefore, in conjunction with the opening/closing mechanisms 6 to 8, the tips of each display rod 11 protrude or retract out of the box 31 through the holes 12. In the embodiment, the display rod 11 is retracted when the switch 5 is opened, and protrudes when the switch 5 is closed.

The holes 12, 12 through which the display rod 11 appears are
When the plug-in appliance 3 is attached to the bus duct 1, it is inserted into the wall surface in the direction intersecting the bus duct 1.

A pair of left and right hook-shaped mounting plates 13, 13 are provided on the wall surface in which the hole 12 is made. Each mounting plate 13 is attached to the box 31 by screws 14 and elongated holes 15 so as to be movable to the left and right, and the outer end 131 has a hook shape that engages with the bent edge 16 for assembly of the bus duct housing. are doing.

The hole 12 and the hook-shaped mounting plate 13 close the hole 12 when the mounting plate 13 is moved outward.
They are arranged in a positional relationship that opens the hole 12 when moved inward.

The hook portion 131 of the hook-shaped mounting plate 13 is provided with a fixing member that can be tightened and loosened for fixing the engagement with the bent edge 16. The fixing member is the bent edge 16
It consists of a concave-shaped piece 17 that engages from below, a threaded rod 18 threaded through it vertically, and a support frame 19 for the threaded rod 18. 20 is a retaining ring for the threaded rod 18.

The plug-in equipment configured above shall be installed in the bus duct in the following order.

1. First, check whether the switch 5 of the plug-in device 3 is open or not by checking the protrusion and retraction state of the display rod 11.

When the display rod 11 is protruding, the switch 5
is closed, so operate the handle 6 to open the switch 5. Then, the display rod 11 is retracted into the box 31. To facilitate confirmation, the tip of the display rod 11 may be colored conspicuously, such as red or yellow.

Furthermore, if the indicator rod 11 is protruding, that is, if the switch 5 is closed, even if an attempt is made to move the hook-shaped mounting plate 13 outward as shown in FIG. 3, the indicator rod 11 will block the movement. Therefore, the hook part 1
31 gets stuck on the side edge of the bus duct 1, and the plug-in appliance 3 cannot be stacked on the bus duct 1.

Then, the switch 5 is opened so that the display rod 11 can be retracted.

2. Move the left and right hook-shaped mounting plates 13 outward, respectively, as indicated by chain lines 13' in FIG.

3 In the state of 2) above, insert the plug-in device 3 into the
The conductor 2 is placed on the bus duct 1 as shown in FIGS. 2 and 4 (shown by solid lines), and the clip 4 is fitted onto the conductor 2.

4. Move the hook-shaped mounting plate 13 inward as shown in Figure 6. Then, the hook portion 131 is bent at the bent edge 1.
6, the hole 12 appears at the same time.

5. By turning the threaded rod 18 and raising the concave piece 17, the concave piece 17 is tightly engaged with the bent edge 16. Also, the fixing fittings 21 attached at other positions of the plug-in device 3 are similarly engaged with the bent edges 16 of the bus duct 1 and tightened.

6 Operate the external operation handle 6 to close the switch 5. A display rod 11 protrudes from the hole 12 as shown in FIG.

Next, to remove the plug-in device 3 from the bus duct 1, 1. Check whether the indicator rod 11 is exposed. If it is retracted, the switch 5 is already open. If it sticks out, the switch 5 is closed, and the handle 6 is operated to open the switch 5. Display rod 1 at the same time
1 is pulled into the box 31.

2. Release the fixing members 17 to 20 and the fixing fittings 21, move the hook-shaped mounting plate 13 to the outside,
The bus duct 1 is disengaged from the bent edge 16.

3 Pick up plug-in device 3 and connect it to bus duct 1
Remove from. Note that instead of providing the fixing members 17 to 20, the mounting plate 13 can be fixed by tightening the screws 14 that guide the movement of the mounting plate 13 and the screws 14 in the elongated holes 15.

In the above embodiment, a pair of left and right indicator rods 11 are provided, and each indicator rod 11, 11 acts on the left and right hook-shaped mounting plates 13, 13, respectively, but only one of them may be used. Alternatively, as shown in FIG. 8, the display rod 11 may be one, and this may be commonly applied to the left and right hook-shaped mounting plates 13, 13.

That is, the inner ends 132, 132 of the left and right hook-shaped mounting plates 13, 13 are extended and overlapped at the center, and the display rod 11 is applied to the overlapped portion. When the switch 5 is closed, the display rod 11 is the matching hole 1 of the plug-in device box 31, as shown in FIG.
2. Hole 13 of left and right hook-shaped mounting plates 13, 13
3, 133, and when the switch 5 is open, the display rod 11 is retracted into the box 31 as shown in FIG. 10, allowing the hook-shaped mounting plates 13, 13 to move from side to side. .

In addition to the embodiments described above, the present invention can also be applied to a plug-in device without an operating handle 6.

As described above, the plug-in device 3 of the present invention has a structure in which the display member 11 is moved in and out of the plug-in device box 31 in conjunction with the opening/closing mechanism 51, 7, 8 or 6 to 8 of the built-in switch 5. Therefore, it is possible to easily check whether the switch 5 is open or closed by looking at the display member 11, and the plug-in device 3 can be connected to and removed from the bus duct 1 while the switch 5 is closed. can be prevented from happening.

Furthermore, since the mounting member 13 of the plug-in equipment box 31 can be engaged and disengaged from the bus duct housing only when the display member 11 is in the open position of the switch 5, it is unnecessary to check whether the display member 11 is in or out. However, if the switch 5 remains closed, the mounting member 13 cannot be operated.

Therefore, it is possible to prevent the plug-in device from being attached to or removed from the bus duct while the wire is live, and there is no sparking when the conductor of the bus duct and the clip of the plug-in device come into contact with each other, making it safe.

[Brief explanation of the drawing]

Fig. 1 is a partially vertical side view of the plug-in device of the present invention installed in a bus duct, Fig. 2 is a cross-sectional plan view thereof, and Figs. 3, 4, and 6 show the engagement order of the mounting members. 5 and 7 are side views of FIGS. 4 and 6, FIG. 8 is a cross-sectional plan view showing the installation state of another embodiment of the plug-in device, and FIGS. 9 and 7 are side views of FIGS. FIG. 10 is a plan view showing the relationship between the display member and the mounting member. 1 is a bus duct, 3 is a plug-in device, 5 is a switch, 51 is a knob, 6 to 8 are opening/closing mechanisms, 11 is a display member, 12 is a hole in which the display member appears, 13 is a mounting member, and 16 is for assembly of the bus duct housing. Bent edge.

Claims (1)

[Scope of Claims] 1. A plug-in appliance for a bus duct, which is provided with a member that displays the open/closed state of a switch that appears and retracts from a plug-in appliance box in conjunction with the opening/closing mechanism of the switch. 2. In bus duct plug-in appliances, a member is provided to display the open/closed state of the switch that appears from the plug-in appliance box in conjunction with the opening/closing mechanism of the switch, and only when the display member is in the open position of the switch. , a plug-in appliance in which the mounting member of the plug-in appliance box can be attached to and detached from the bus duct housing.