JPS6338661Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a low-voltage branch box mounting bracket that is hung from an arm or the like attached to a utility pole.

Conventionally, in this type of branch box, a branch box mounting bracket was attached directly to the telephone pole above the arm through which the electric wire was passed through or held, and the branch box was fixed to this. Therefore, in order to lead the wires into this branch box, the wires had to be raised up from the armrests where the wires were held down using an appropriate method.

This invention eliminates these drawbacks and allows the branch box to be hung on the arm itself and pulled directly into the branch box without using any other fasteners, and it is extremely easy to attach and remove the branch box from the arm. The purpose of this invention is to provide a branch box mounting bracket that provides a suitable branch box mounting bracket.

Below, an embodiment of this invention will be explained with reference to the drawings. 1 is a arm having a pole abutting plate 2 at one end, and this arm 1 is made by applying the pole abutting plate 2 to a telephone pole 3, and tightening a tightening band 4 from above. It is tightened and supported by the telephone pole 3. Reference numeral 5 denotes a reinforcing wing plate with one end brought into contact with the utility pole abutting plate 2, and erected on each of the four sides of the arm 1; 6, the lower side of one end of itself is fixed to the middle of the arm 1; The horizontal crossbar 7 projects at right angles to the horizontal crossbar 6, and its vertical part is fixed to the central side of the horizontal crossbar 6, and its horizontal part is positioned below the lower surface of the horizontal crossbar 6 for temporary locking. Futsuku, 8
is an acute angle bent protrusion consisting of an inclined part and a horizontal part, and this acute angle bent protrusion 8 has its inclined end connected to the upper vertical reinforcing wing plate 5, and its horizontal end connected to the lower vertical reinforcing wing plate 5. are fixed and supported respectively. Reference numeral 9 designates a branch box similar to the conventional product, and this branch box 9 has an upper part of a branch box side plate 11 fixed to one side of a cylindrical body support part 10 to which an insulating cylindrical body for inserting a drop-in line and a branch line is fixed. On the other side, an opening/closing frame 12 consisting of three side plates each having a U-shaped cross section is supported by a bolt shaft 13 at its upper portions on both sides. Reference numeral 14 indicates a downward key piece provided on the outer surface of the upper part of this branch box side plate 11, and reference numeral 15 indicates a bolt shaft 13 which supports the opening/closing frame 12 on the cylindrical body support part 10, and both lower ends thereof are supported pivotally. The hanging frame 16 is a hanging metal fitting attached to the branch box 9. This hanging metal fitting 16 has a vertically long vertical plate 17 with a stepped part 18 in the middle so that the upper and lower parts thereof are parallel to each other. A U-shaped protruding plate 19 is provided at right angles to the vertical plate 17 on the upper side surface of the plate 17 on the side opposite to the step 18, and below the U-shaped protruding plate 19, a reinforcing plate 20 is made to stand up from the vertical plate 17. An elongated hole 21 is bored in the lower part of the lever, and an engaging body 22 with which the key piece 14 is engaged is provided above the vertical plate 17 on the back side of the U-shaped projecting plate 19. The hanging fitting 16 constructed of these is brought into contact with the branch box side plate 11 by fitting the key piece 14 of the branch box side plate 11 into the engaging body 22, and the bolt 23 passing through the branch box side plate 11 is connected to the vertical plate 17. The hanging fitting 16 is fixed to the branch box side plate 11 of the branch box 9 by passing it through the elongated hole 21 and screwing it with a nut.
Reference numeral 24 denotes hanging hooks provided at the upper end of the vertical plate 17 and on both sides of the hanging frame 15. In this way, the branch box 9 with the hanging fitting 16 attached to one side and the hanging frame 15 attached to the other side is lifted up,
Insert the horizontal part of the acute bent protrusion 8 between the U-shaped protrusions 19 of the hanging fitting 16, pass the bolt 25 between the U-shaped protrusions 19, and fasten the upper horizontal part of the hanging frame 15 on the other side. 15a is brought into contact with the lower surface of the horizontal crossbar 6, and the horizontal crossbar 6 and the hanging frame 15 are brought into contact with each other.
A bolt 26 is passed through the upper horizontal portion 15a, and a nut 27 is screwed onto the bolt 26. Note that 28 is a thumbscrew screwed onto a protrusion at the lower end of the side plate 11 of the branch box 9, and 29 is a thumbscrew 28 provided at the lower end of the opening/closing frame 12. Key-shaped notch hole, 30 is arm bar 1
This is an earth terminal attached to the horizontal reinforcing wing plate 5.

This invention has the above-described structure, and the low-voltage branch box 9 is attached under the arm 1, and the electric wires held on the arm 1 can be drawn directly into the branch box 9. Therefore, it is unnecessary to attach a branch box mounting bracket to a utility pole or the like separately from the arm 1 as in the past, and then attach the branch box to this. It saves you the trouble of using it to stand up and pulling it into the branch box. Further, in this invention, if the hanging metal fittings 16 and the hanging frame 15 are attached to the branch box 9, the branch box 9 can be attached anywhere where the horizontal crossbar 6 and the acute bent protrusion 8 can be attached. In addition, when attaching the branch box 9 to the arm 1, attach a rope to the hanging hook 24 and lift it up.
Insert the horizontal part of the acute bent protrusion 8 between the 9 and 9, and insert the bolt 25 between the U-shaped protrusions 19. Then, the horizontal portion 15a of the hanging frame 15 is locked to the temporary locking hook 7 provided on the lower surface of the horizontal crossbar 6. As a result, the branch box 9 is temporarily suspended below the arm 1. Then, the horizontal crossbar 6 and the horizontal part 15a of the hanging frame 15 are fixed with bolts 26 and nuts 27, and the bolt 25 between the outer ends of the U-shaped projecting plate 19 into which the horizontal part of the acute bent projecting piece 8 is inserted Tighten to completely secure bolt 25. This prevents the horizontal portion of the acute bent protrusion 8 from coming off the inside of the U-shaped protrusion 19. As mentioned above, when installing the branch box 9, after lifting the branch box 9 to below the arm 1,
Once the branch box 9 is temporarily locked, the worker can free both hands to fix the branch box 9.
Installation and removal work is extremely easy.
Further, as shown in FIG. 4, if the shaft hole 31 of the opening/closing frame 12 of the branch box 9 of this invention, through which the bolt shaft 13 passes, is made into a long hole, the opening/closing frame 12 can be opened by loosening the thumbscrew 28. When rotated about the bolt shaft 13, the end of the opening/closing frame 12 can be pushed under the plate-like end of the cylindrical support part 10 to maintain the open state. In addition, in this invention, after attaching the arm 1 to the utility pole 3, the branch box 9 with the hanging metal fittings 16 and the hanging frame 15 attached is lifted to below the arm 1 and attached, which reduces the weight of the arm 1 and the branch box 9. This makes lifting and installation work extremely easy.

As described above, this invention allows the branch box to be suspended and fixed under the arm where the electric wires are held.
This has the effect that the electric wire can be led directly from the arm to the branch box, and it is extremely easy to attach and remove the wire from the arm.

[Brief explanation of the drawing]

The figures show an embodiment of this invention. Fig. 1 is a front view of this invention, Fig. 2 is a side view of the same, Fig. 3 is a sectional view taken along line A-A of Fig. 2, and Fig. 4 is a cross-sectional view of this invention. FIG. 5 is a perspective view showing a state in which the opening/closing frame is opened, and FIG. 5 is a perspective view of a branch box to which the hanging fitting and hanging frame of this invention are attached. In the figure, 1 is the arm, 3 is the utility pole, 5 is the reinforcing wing plate,
6 is a horizontal crosspiece, 7 is a temporary locking hook, 8 is an acute bent protrusion, 9 is a branch box, 10 is a cylindrical support part, 11 is a branch box side plate, 12 is an opening/closing frame body, 13 is a bolt shaft,
15 is a hanging frame body, 16 is a hanging metal fitting, 17
18 is a vertical plate, 18 is a stepped portion, 19 is a U-shaped projecting plate, 24 is a hanging hook, 25 and 26 are bolts, and 27 is a nut.

Claims (1)

[Scope of utility model registration request] The upper part of the branch box side plate 11 is fixed to one side of the cylindrical body support part 10, and the upper part of an opening/closing frame 12 having three side surfaces and having a U-shaped cross section is pivotally supported on the other side by a bolt shaft 13. Both lower ends of a shaped hanging frame 15 are pivotally supported on the bolt shaft 13 of the constructed branching box 9, and a hanging fitting 16 having a U-shaped projecting plate 19 at the upper end of the vertical plate 17 is provided separately. is fixed to the branch box side plate 11, and the horizontal part of the acute bent protrusion 8 attached to the root of the arm 1 attached to the telephone pole 3 is inserted between the U-shaped protruding plates 19, and a bolt is inserted between the outer ends of the protruding plates 19. 25, and the horizontal part 15a of the suspension frame 15 is brought into contact with the lower surface of the horizontal crosspiece 6 protruding from the arm 1 and bolted, and the horizontal crosspiece 6 is provided with a temporary locking hook 7. Low pressure branch box mounting bracket.