JPH0353567Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a low-voltage bypass terminal that is installed near both retaining parts of a low-voltage distribution line, and allows the bypass line to be connected easily and safely when necessary. It's about boxes.

(Conventional technology) When relining a certain section of electric wires or cables or replacing a transformer at a location on a low-voltage distribution line, customers in that section are forced to experience power outages. be done. Conventionally, in order to supply power to consumers in such a case, a bypass line is installed within the power outage section, and power is supplied from a distribution line elsewhere.

(Problems to be Solved by the Invention) However, the conventional method described above has a problem in that it requires a lot of effort and time. The present invention was developed from this point of view, and its purpose is to install a low-voltage bypass terminal box near both retaining parts of a low-voltage distribution line so that the bypass line can be connected easily and safely when necessary. It is something to do.

(Means for solving the problem) In order to achieve the above-mentioned purpose, in this invention,
Electric wires and compressed terminals, which are drawn in from the side of the terminal box body with the opening of the box body facing downward, through an elastic bushing, are connected to a rod-shaped fixed electrode that is screwed into an embedded nut embedded in the upper inner surface of the terminal box body. A bottom plate is fixed to the lower part of the fixed electrode, and a hollow cylindrical bypass terminal is electrically connected to the fixed electrode that protrudes downward from the bottom plate, and the bypass terminal is covered with protection. A cylinder is fixed to the bottom plate, and a cover made of an insulating material is removably fitted to the protective cylinder to form a low voltage bypass terminal box.

(Function) If the low-voltage bypass terminal box of the present invention configured as described above is installed near both retaining parts of the low-voltage distribution line, the cover of the low-voltage bypass terminal box can be removed in the event of a power outage due to construction, etc. In addition, by connecting a bypass line connected to a power source elsewhere to the exposed bypass terminal, power outages can be prevented very simply and easily. Moreover, this operation can be performed quickly and safely because it is only necessary to insert the end of the bypass wire into the hollow cylindrical bypass terminal.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. In the figure, 1 is a utility pole, 2 is an arm, and 3 is a low-voltage distribution line stretched to the arm 2 via a connecting fitting 4 and an insulator 5.

In this embodiment, a box-shaped terminal box main body 7 is attached to the side surface of a utility pole 1 via a fitting 6, and bolts 8 and nuts 8a are attached with the opening 7a facing downward.
(See Figure 7).

In FIGS. 3 to 8, 6a is the top plate of the mounting bracket 6, and 9 is a ground terminal protruding from the side surface of the mounting bracket 6.

The terminal box main body 7 has a cross-shaped partition wall 7 that divides the inner upper half into a plurality of parts (four in this embodiment).
b, and the side wall of each compartment 7c is provided with a wire insertion port, and an elastic bushing 10 made of rubber or the like is provided.
Insert. Further, an embedded nut 11 is embedded in the upper inner surface of each compartment 7c, and the body 12a is formed in the shape of a hexagonal rod, with a threaded portion 12b provided at the upper end and a stepped small diameter portion 12c provided at the lower end. An electric wire 13 branched from the low-voltage distribution line 3 is drawn into each compartment 7c via the elastic bushing 10, and a compression terminal 14 compressed and connected to the end of the electric wire 13 is connected to the embedded nut 1.
1 and the threaded portion 12 of the fixed electrode 12.
b into the nut 11 to fix the compression terminal 14. Note that 15 is a screw for fixing the end of the compression terminal 14 to the terminal box body 7.

Further, a bottom plate 16 integrally formed with a plate that closes the lower opening of each compartment 7c is attached to each fixed electrode 12.
The hollow cylindrical bypass terminal 17 is fitted into the stepped small diameter part 12c of the fixed electrode 12, which is provided so as to fit into the stepped small diameter part 12c of the fixed electrode 12, and which projects downward from the bottom plate 16. The bypass terminal 17 is electrically connected to the fixed electrode 12 by fastening the bypass terminal 17 to the fixed electrode 12 with the terminal 19 .

Further, a cylindrical portion 16a that encloses each bypass terminal 17 at a distance is formed integrally with the bottom plate 16,
A protective cylinder 20 enclosing the bypass terminal 17 is screwed onto the cylindrical portion 16a of the bottom plate 16, and a cover 21 made of an insulating material such as synthetic resin is attached to the protective cylinder 20.
can be attached and detached freely.

(Effect of the invention) If the low-voltage bypass terminal box of the present invention configured as described above is installed near both retaining portions of the low-voltage distribution line 3, for example on the utility pole 1 shown in FIGS. 1 and 2, construction work etc. Therefore, in the event of a power outage, it is extremely simple and easy to remove the cover 21 of the low voltage bypass terminal box and connect the bypass wire (not shown) connected to the power source elsewhere to the exposed bypass terminal 17. power outages can be prevented. Moreover, since the work only requires inserting the end of the bypass wire into the hollow cylindrical bypass terminal 17, the work can be performed quickly and safely.

Therefore, according to the present invention, it is possible to easily and safely eliminate power outages as much as possible.

[Brief explanation of drawings]

Figure 1 is an elevational view of the utility pole to which the device of the present invention is attached, Figure 2 is its top view, Figure 3 is a front view of the terminal box of the present invention, Figure 4 is its bottom view, and Figure 5 is the third 6 is a vertical cross-sectional view of the terminal box of the present invention, FIG. 7 is a cross-sectional view taken from FIG. 6, and FIG. 8 is a side view showing a part of FIG. 6 in cross section. 1... Utility pole, 3... Low voltage distribution line, 7... Terminal box body, 7a... Opening, 10... Elastic bushing, 1
1...Embedded nut, 12...Fixed electrode, 13
... Electric wire, 14 ... Compression terminal, 16 ... Bottom plate, 1
7... Bypass terminal, 20... Protective cylinder, 21...
…cover.

Claims (1)

[Scope of utility model registration request] Electric wires and compressed terminals, which are drawn in from the side of the terminal box body with the opening of the box body facing downward, through an elastic bushing, are connected to a rod-shaped fixed electrode that is screwed into an embedded nut embedded in the upper inner surface of the terminal box body. A bottom plate is fixed to the lower part of this fixed electrode, and a hollow cylindrical bypass terminal is electrically connected to the fixed electrode that protrudes downward from this bottom plate, and a protective cylinder is provided to enclose this bypass terminal. is fixed to the bottom plate, and a cover made of an insulating material is removably fitted to the protective cylinder.