JPH0238389Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Background and Purpose of the Invention] The present invention relates to a plug-in section of a plug-in bus duct.

The opening in the plug-in portion of the bus duct is provided with a metal cover that closes when not in use and opens when in use.

In conventional bus ducts of this type, the plug-in opening is closed with a removable cover, so it is easy to forget to put the cover on or lose the cover when removing the plug-in equipment and moving it to another location. This caused some inconvenience, such as the occurrence of

In addition, there is a risk that the plug-in device may be mistakenly removed while it is still loaded, and various problems associated with this may occur.

The present invention provides a bus duct that can solve the above two problems at the same time.

[Summary of the idea]

The gist of the present invention is to fix a blocking cover at a plug-in opening to a bus duct with a hinge, provide the cover with a hole at a position that does not impair its blocking function, and incorporate this into the plug-in device. The rod is adapted to be inserted into the rod which is projected or retracted from the outer surface of the device in conjunction with the opening/closing operation of the switch.

Plug-in appliances have a built-in switch,
It is equipped with an interlock mechanism in conjunction with opening/closing operations, and when the switch is closed, the rod in the interlock mechanism of the plug-in device fits into the hole in the cover, making it impossible to remove the plug-in device.

〔Example〕

Next, a specific example of the present invention will be explained in comparison with the drawings. Fig. 1 is a longitudinal sectional view of the bus duct of the present invention with a plug-in opening cover attached;
is the conductor of the bus duct, 2 is the conductor support insulator, and 3 is the conductor of the bus duct.
is a duct, 4 is a plug-in opening, and 5 is a plug-in opening cover that is closed when not in use.

6 indicates each spring hinge.

Figure 2 shows the plug-in opening and plug-in device 8.
7 is a perspective view showing an interlock hole, and the plug-in device 8 has a contact (not shown) that contacts the conductor through the plug-in opening, and is used for the opening/closing operation of the built-in switch. A rod in an interlocking interlock mechanism is installed so as to protrude and retract from the outer surface of the instrument 8.

In FIG. 1, the plug-in opening 4 is attached to the duct 3 so that a metal cover 5 is closed by a hinge 6 when not in use, and the opening 4 is opened by lifting the opposite side of the cover 5. If you let go, it will automatically close.

Inside the bus duct, polyphase conductors 1 are housed and are firmly fixed by supporting insulators 2.

As shown in FIG. 2, when installing the plug-in device 8, the cover 5 is raised, the plug-in device 8 is aligned with the opening 4, and the plug-in device 8 is inserted and installed. If the switch built in the plug-in device 8 is closed at this time, the interlock rod 9 will protrude from the device and collide with the metal cover 5 to prevent insertion.

If the switch is open, there will be no problem. Since the interlock rod 9 is set back from the outside of the device, the device can be properly installed on the duct 3 and the hole 7
It is ready to be inserted into.

Interlock rod 9 when the switch is closed
can protrude and fit smoothly into the interlock hole 7 of the cover 5.

When removing the plug-in device 8, the interlock caused by the fitting between the rod 9 and the hole 7 is not released unless the switch is opened, so that the plug-in device 8 is prevented from being removed in a loaded state by mistake.

[Effect of idea]

As mentioned above, the busudite according to the present invention includes:
Since the metal cover is fixed with a hinge, the cover is automatically closed when the plug-in device is relocated, and the interlock hole is drilled at a position away from the plug-in opening. Since the cover is closed, it does not impair the closing function, and there is no need to lose the cover or forget to close it like before.
The practical effects are significant.

In addition, with plug-in devices, when the switch is closed, the rod that protrudes from the device hits the bus duct cover and is prevented from being inserted.If the switch is open, the rod retreats into the device, so it can be plugged in without any problem. Once the device is installed and the switch is then closed, the rod will immediately protrude from the device and successfully engage the interlock hole.

When removing a plug-in device, the interlock will not be released unless the switch is opened, so that it is possible to prevent accidental removal under load.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing a plug-in opening cover in a bus duct according to the present invention, and FIG. 2 is a perspective view illustrating joining the plug-in opening and a plug-in appliance. DESCRIPTION OF SYMBOLS 1...Bus duct conductor, 2...Conductor support insulator, 3...Duct, 4...Plug-in opening cover, 6...Hinge with spring, 7...Interlock hole, 8...Plug-in device, 9... ...Interlock rod.

Claims (1)

[Scope of utility model registration request] In a plug-in bus duct in which a multiphase conductor is built into a duct with a plug-in opening, a metal cover that closes the opening when not in use is fixed to the duct with a hinge, and the metal cover does not block the closing function. A hole is provided at the position, and the hole is adapted to allow insertion of a rod that protrudes or retreats from the outer surface of the device in conjunction with the opening/closing operation of a switch built into the plug-in device that contacts the conductor through the plug-in opening. , an automatic closing cover that also serves as an interlock type for plug-in opening, characterized in that the plug-in device is prevented from being removed when the switch is closed.