JPS5838742Y2 - closed busbar - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a closed busbar having an inspection window that enables internal assembly, inspection and maintenance work, etc.

The closed busbar, which conductively connects electrical equipment to each other and forms a predetermined power distribution path, is provided with an inspection window for internal assembly, inspection and maintenance work.

Hitherto, a hinge type inspection window for this type of closed busbar has generally been used.

In this case, the inspection window cover rotates in a large arc around the hinge, so the surface on which the inspection window is attached needs to have a large distance from the closing bus bar to the obstruction, making it difficult to install in a narrow space. It was difficult.

Furthermore, since the closed busbar is generally installed at a high location, safe inspection and maintenance work is required after installation.

The object of the present invention is to provide a closed busbar with an inspection window that is easy to open and close and does not require a large opening and closing space.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, an inspection window 1' is provided at a location in a jacket 1 that allows inspection and maintenance of the interior of the closed busbar, such as the busbar 2, and is covered by a lid 3 so as to be openable and closable.

As shown in FIGS. 2, 3, and 4, an arm 4 is arranged along one side of the lid 3, and one end of the arm 4 is rotatably fixed to the closure generatrix sheath 1 by a hinge 5.

Further, as shown in FIG. 2, the intermediate part of the arm 4 is attached to the side surface of the lid 3, and a washer 6 and a rotating pin 7 are attached as shown in FIGS.
are rotatably connected via the

A pin 8 is passed through the tip of the rotating pin 7 in its diametrical direction to prevent it from being pulled out.

On the other hand, as shown in FIG. 2, a plurality of bosses 9 are fixed on the closed generatrix sheath 1 corresponding to the free end side of the arm 4, and as shown in FIG. Washer 1
2 is used to fix the arm 4.

As shown in FIG. 5, receiving plates 13 and 14 are provided on both sides of the lid 3, and on the plate 14 side, there is an arm 15 having the same structure as the arm 4, which is shifted in the length direction. The same parts as those for the receiving plate 13 side are used for attachment.

Further, the arm 4 and the arm 15 are attached diagonally to the inspection window 1'.

In the lid 3 configured as described above, the arm 4 rotates around the hinge 5, and the inspection window lid 3 is opened and closed while maintaining its horizontal position.

That is, in FIG. 4, by removing the hexagonal bolt 10, the arms 4, 15 become free and rotatable.

For this reason, by raising the lid 3, the intermediate part of the arm 4.15, including its free end, is once raised via the pin 7 and rotated about the hinge 5.

When the pin 7 crosses the pivot point of the hinge 5, the intermediate portion descends and becomes open as shown in FIG.

Further, when the lid 3 is opened and then closed, by raising the lid 3, the arms 4 and 15 are rotated around the hinge 5, contrary to the case when the lid 3 is opened, to the closed state.

Here, since the arms 4 and 15 are at diagonal positions with respect to the lid 3 as described above, the rotation pin 7 of the connecting portion between the arms 4 and 15 and the lid 3 is also at a diagonal position, and the balance of the lid 3 is maintained.

Therefore, even when the arms 4 and 15 are rotating, only the lid 3 does not rotate and remains substantially horizontal as shown in the drawing.

When the lid 3 is in the closed state, the receiving plates 13 and 14 of the lid 3 are held down by the arms 4 and 15, as shown in FIGS. It is fixed by a boss 9 and a hexagonal pole 10 which are attached to the target 1.

Further, a gasket 17 is fixed to a peripheral flange 16 of an inspection window 1' provided on the closed busbar sheath 1.

This packing 17 is compressed by fixing the arms 4 and 15 with hexagonal bolts 10, and prevents rainwater, dust, etc. from entering the closed bus bar.

As explained above, the present invention uses an arm to reduce the opening/closing range of the lid, and since the rotation pin is placed diagonally, the inspection window does not rotate and can be easily moved by nearby obstacles. Since it does not hit, the arrangement and workability of the closed busbar are improved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the relationship between a general closed bus bar and an inspection window, Fig. 2 is a front view showing the closed bus bar according to the present invention, and Fig. 3 is a sectional view taken along line III-III in Fig. 2; 4 is a sectional view taken along line IV-IV in FIG. 2, FIG. 5 is a top view of FIG. 2, and FIG. 6 is a front view of the arm shown in FIG. 2 when the inspection window is opened. 1...Outer cover, 1'...0010 inspection window, 2...
...Conductor, 3...Lid, 4.15...
・Arm, 5...Hinge that serves as a pivot point, 7.
...Rotating pin for connecting the intermediate part, 9...Boss, 10...Screw body.

Claims (1)

[Scope of utility model registration request] A cylindrical outer cover that houses a conductor in the center and has an inspection window on its periphery, a lid that covers the inspection window in an openable and closable manner, and a conductor that runs along opposite sides of the lid in the same direction. the lid; a boss provided on the outer cover facing the free end side of the arms and fixed to the arm by a screw body screwed through the arm when the arm is closed, the pivot point of the pair of arms; are offset from each other along the length of the arm.