JPH058751Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for attaching an instrument box to a service line pipe column for leading power lines, telephone lines, etc. to consumers.

[Conventional technology]

Conventionally, when power lines, telephone lines, etc. that were wired overhead along roads, etc. were brought to consumers, they were installed in the customer's garden with the lower part buried in the soil, and were installed from the top of the service line pipe pole into the pipe pole. Power lines, telephone lines, etc. are drawn in, connected to the electricity meter and telephone protector in the meter box installed in the middle of the pipe pole, and then led back into the pipe pole and routed underground to the customer from the bottom of the pipe pole. Wiring is being done.

The above-mentioned instrument box is generally attached to the tube column via a mounting member, and wire insertion holes are formed on each opposing surface of the tube column and the instrument box at the installation point, and the electric wires are inserted into the tube column. and a type that allows wiring to be routed outside the instrument box without detouring, and a sealing member is interposed between the two wire insertion holes to prevent rainwater, etc. from entering the pipe column and the instrument box. This is known (see, for example, Japanese Utility Model Application Publication No. 172229/1983).

[Problem that the invention attempts to solve]

However, in the conventional mounting member, the mounting member includes a cylindrical portion associated with the wire insertion hole formed on each opposing surface of the tube column and the instrument box, an instrument box mounting arm, and a semicircle that abuts the outer peripheral surface of the tube column. An arc-shaped mounting part is formed integrally with the mounting part, and the mounting part is aligned with the outer peripheral surface of the pipe column.
A semi-circular band is attached to the outer circumferential surface of the tube column on the opposite side and is tightened and fixed with bolts, nuts, etc., and the instrument box is attached to the mounting arm with screws, etc. Therefore, the shape of the mounting member becomes complicated and manufacturing is troublesome.

Furthermore, in the conventional type, both ends of the cylindrical portion are pressed into close contact with the outer edges of the wire insertion holes of utility poles and instrument boxes via O-rings as sealing members. It is difficult to make a tight contact across the wire, and due to manufacturing errors in the mounting parts, gaps often form between the outer edge of each wire insertion hole and the cylindrical portion, allowing rainwater to infiltrate into the pipe column and instrument box. There was a risk that it would happen.

The present invention was devised in view of the above-mentioned problems, and an object of the present invention is to obtain an instrument box mounting device that is easy to manufacture and has good waterproof performance.

[Means for solving problems]

In this invention, a pair of semicircular arc-shaped tightening bands are connected and tightened to a service line pipe column, and an instrument box is attached to a mounting arm that is overlapped and integrally connected to the center of one of the tightening bands. A substantially cylindrical elastic waterproof packing serving as a sealing member is fitted and held in a through hole formed in the overlapped joint between the mounting arm and the tightening band, and both ends of the cylindrical waterproof packing are connected to the pipe column and the instrument box. This is a device for attaching an instrument box to a drop-in line pipe column, characterized in that the instrument box is pressed against the edge of an electric wire insertion hole formed on each opposing surface of the instrument box.

[Effect]

A pair of semicircular arc-shaped tightening bands are connected and tightened to the service line pipe column, and the instrument box is attached to the mounting arm that is overlapped in the center of one of the tightening bands and connected integrally. This simplifies the configuration of the instrument box attachment member to the pipe column.

Further, a substantially cylindrical elastic waterproof packing serving as a sealing member is fitted and held in the through hole formed in the overlapping joint portion of the mounting arm and the tightening band, and both ends of the cylindrical waterproof packing are connected to the pipe column and the meter. By making pressure contact with the edge of the wire insertion hole formed on each surface facing the box, the pipe column and the wire insertion hole of the instrument box can be made watertight, regardless of manufacturing errors of the above-mentioned mounting members. It becomes possible to communicate.

〔Example〕

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

FIG. 1 is a front view of the main parts showing an embodiment of the instrument box mounting device to the service line pipe column according to the present invention;
FIG. 2 is a partially cross-sectional plan view, and FIG. 3 is an exploded perspective view of the main parts.

In the figure, 1 is a pipe column for service lines made of steel pipes with the lower part buried in the ground, and 2 is an instrument box with built-in meters 3 such as wattmeters and telephone protectors, which are attached in two places above and below. It is attached to the side surface of the tube column 1 via a member.

As shown in FIG. 2, each of the mounting members is secured by tightening and fixing a pair of semicircular arc-shaped tightening bands 4 and 5 along the outer peripheral surface of the pipe column 1 with bolts 6 and nuts 7, and An instrument box mounting arm 8 having a substantially U-shaped side surface is superimposed on a bent portion 4b formed in the center of the tightening band 4 and has a substantially U-shaped planar shape, and is fixed integrally by spot welding or the like, and the instrument box 2 is attached to the mounting arm 8.
is attached with bolts 9.

Each mounting arm 8 and the tightening band 4 overlap each other with an oblong through hole 8 that is elongated in the vertical direction.
a, 4a are formed, and a substantially cylindrical elastic waterproof packing 10 made of rubber or the like is fitted and held therein.

Elongated oblong electric wire insertion holes 11 and 12 are formed in the opposing surfaces of the tubular column 1 and the meter bolt 2 on both sides of the cylindrical waterproof packing 10 in the vertical direction.

The end 10a of the waterproof gasket 10 on the instrument box side has its tip protruding into the wire insertion hole 12, and a flange 10c integrally formed on the outer peripheral surface of the end is connected to the instrument box 2 and the mounting arm 8. The electric wire insertion hole 12 is held in close contact with the outer edge of the electric wire insertion hole 12 by being compressed and held between the electric wire insertion hole 12 and the electric wire insertion hole 12 .

Also, the end face 10 of the waterproof gasket 10 on the tube column side
b is formed in substantially the same shape as the outer peripheral surface of the tube column 1,
It is held tightly in a compressed state on the outer edge of the wire insertion hole 11 on the tube column side.

Reference numeral 13 denotes a ring-shaped bushing made of rubber or the like and having a U-shaped cross section and is fitted onto the edge of the wire insertion hole 11 on the tube column side, and 10d is a recess formed in the packing 10 to avoid interference with the bushing 13.

[Effect of idea]

As described above, the present invention consists of connecting and tightening a pair of semi-circular tension bands to a lead-in line pipe column, and attaching the mounting arm to the central part of one of the tension bands, which is superimposed on the central part of the tension band and integrally connected. Since the instrument box is attached, the instrument box mounting member for the pipe column can be easily formed using sheet metal, etc.
Compared to the conventional method in which the cylindrical portion communicating with the wire insertion hole between the tube column and the instrument box, and the semicircular arc-shaped mounting portion that abuts the instrument box mounting arm and the outer peripheral surface of the tube column are integrally molded, It is easy to manufacture and can be manufactured easily and inexpensively.

In addition, a substantially cylindrical elastic waterproof packing is used as a sealing member to prevent rainwater from entering into the pipe column and the instrument box, and the packing is inserted into the through hole formed at the overlapped joint of the mounting arm and the tightening band. Since the two ends of the gasket are pressed into contact with the edges of the wire insertion hole of the pipe column and the instrument box, O-rings are inserted at both ends of the cylindrical part of the mounting member as in the conventional method. Compared to a method in which the electric wire is brought into pressure contact with the edge of the wire insertion hole, it is possible to more reliably prevent rainwater from entering the tube column and the instrument box.

[Brief explanation of the drawing]

FIG. 1 is a front view of the main parts of an embodiment of the present invention, FIG. 2 is a partially cross-sectional plan view thereof, and FIG. 3 is an exploded perspective view of the main parts. 1 is a pipe column for a lead-in line, 2 is an instrument box, 3 is an instrument, 4 and 5 are tightening bands, 8 is a mounting arm, 10 is a waterproof packing, 11 and 12 are electric wire insertion holes, and W is an electric wire.

Claims (1)

[Scope of utility model registration request] A pair of semicircular arc-shaped tightening bands are connected and tightened to the lead-in line pipe column, and the instrument box is attached to the mounting arm that is overlapped and integrally connected to the center of one of the tightening bands. A substantially cylindrical elastic waterproof packing is fitted and held in a through hole formed in the overlapping joint portion of the cylindrical waterproof packing and the tightening band, and both ends of the cylindrical waterproof packing are formed on each opposing surface of the pipe column and the instrument box. 1. A device for mounting an instrument box to a lead-in line pipe column, characterized in that the instrument box is pressed into contact with the edge of a wire insertion hole.