JPH10126933A - Wire anchor clamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an anchor clamp where inadvertent falling of a clamp body or a wedge member is prevented during work. SOLUTION: The wire anchor clamp comprises a clamp body 1 having a clamp groove 5, and a wedge member 2 having a wedge part 8 for clamping a wire in the clamp groove 5 and an anchor part 10 to be coupled with a hanger rod holder 3. A lateral locking hole 11, into which a hunchback pin 12 can be inserted, is made in the thin part of the wedge member 2 facing the end face of the clamp body 1 and the hunchback pin 12 is inserted into the locking hole 11 thus preventing the clamp body 1 and the wedge member 2 from being dismantled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wedge-type retaining clamp for distribution lines for retaining electric wires to a support such as a telephone pole.

[0002]

2. Description of the Related Art As is well known, a small wedge type clamp for holding an electric wire to a support such as a telephone pole comprises a clamp body having a U-shaped cross section formed with an electric wire insertion groove, and the electric wire. A wedge member which is inserted into the insertion groove and clamps the electric wire. The wedge member is connected and pulled to an insulator of a power pole by a U-shaped hanger rod having a hanger rod holder.

[0003]

Therefore, when the wire is stretched and pulled using the pulling clamp, the wedge member may come out of the clamp body inadvertently. Generally speaking, since the work is performed on a high place with a poor scaffold, the dropped clamp body or the wedge member is extremely dangerous, and there is a problem that the dropped parts are lost. Therefore, when carrying out such wire extension work, although there are protective fences around the work site where no passersby can enter, other workers can enter the work site freely. Therefore, if the clamp body or the wedge member is accidentally dropped, other workers may be harmed, and it may be difficult to continue the work due to loss of parts.

An object of the present invention is to take into account the above-mentioned current state of the conventional wire stretching and anchoring work, whereby the clamp body and the wedge member do not disassemble and drop during the work, and it is easy to confirm the completion of the work. The present invention is to provide a simple wire anchoring clamp.

[0005]

In order to achieve this object, the present invention relates to a clamp body having a clamp groove formed thereon, and a wedge portion for clamping an electric wire between the clamp body and the hanger rod holder. And a wedge member having an anchoring portion, wherein the thin portion of the wedge member facing the end surface of the clamp body,
A wire retaining clamp that forms a lateral retaining hole into which a female pin can be inserted, and inserts a female pin into the retaining hole to prevent inadvertent disassembly of the clamp body and the wedge member during electrical wire retention. It is a suggestion. In the following description of a preferred embodiment of the present invention, the clamp body has a structure that can be inserted into the wedge member from the plate stopper hole side, and when the wedge member is inserted into the clamp body to some extent, the wedge member Explains the structure that cannot proceed any further.

[0006]

FIG. 1 is a side view of a retaining clamp according to the present invention.
FIG. 2 is a rear view, and FIG. 3 is a side view of FIG. 1 as viewed from the left. The retention clamp according to the present invention includes a clamp body 1, a wedge member 2, a hanger rod holder 3, and a U-shaped hanger rod 4. Become.

As shown in FIG. 3, the clamp body 1 is molded in a reverse U-shaped cross section with a lightweight aluminum alloy, and has a clamp groove 5 formed inside. On both lower sides of the clamp groove 5, shoulders 5a are formed which are in pressure contact with step portions 2a on the lower surface of the wedge member 2 described later, and the upper surface 5b is semicircular so as to engage with the electric wire.

[0008] As shown in FIG.
On b, a number of cutting teeth for preventing electric wires from slipping, that is, serrated protrusions 6 are cut in an arc shape. In other words, these cut and raised teeth, that is, the saw-tooth protrusions 6 are cut and raised at an angle on the upper surface 5b of the clamp groove 5 by a tool such as a chisel having a sharp tip or press working. Can be cut into the surface of the stranded conductor W of a relatively soft electric wire from which the insulating coating has been removed. A projection 7 for driving the wedge member 2 by a hammer is formed at one end of the top of the clamp body 1.

On the other hand, the wedge member 2 is composed of a wedge portion 8 and an anchoring portion 10 continuous with the wedge portion 8, but as shown in FIG. 3, the wedge portion 8 has a central flat lower surface between the step portions 2a. 2b and a curved upper surface 2c according to the outer shape of the electric wire
As shown in FIG. 1, the curved upper surface 2c
Is in a state inclined to the lower left.

The retaining portion 10 protrudes downward from the base of the wedge portion 8, and the clamp body 1
A retaining hole 11 penetrating in the lateral direction is formed facing the end face of the main body, into which a pin 12 for preventing the clamp body 1 from coming out of the wedge member 2 can be inserted.

That is, the clamp body 1 is provided with a wedge portion 8 as shown in FIG.
However, since the upper surface of the thick portion of the wedge member comes into contact with the inner walls on both sides of the clamp groove 5, it cannot move further to the left. On the other hand, if the relationship between the clamp body 1 and the wedge member 2 is continued, the clamp body 1 can freely move to the right with respect to the wedge member 2, so that an electric wire is interposed between the clamp body 1 and the wedge portion 8. After that, if the pin 12 is inserted into the retaining hole 11, the clamp body 1 and the wedge 8 will not come off the wire.

A joint hole 13 into which the tip of the connecting pin 15 can be inserted is formed in the retaining portion 10 of the wedge member 2 described above, and the outside thereof is a cylindrical portion 14 for compression and fixing.

The hanger rod holder 3 is a horizontally long member.
A through-hole is formed through which the connecting pin 15 can be rotatably penetrated, but since the connecting pin 15 has the round head 15a for retaining, the connecting pin 15 does not come out of the hanger rod holder 3. As shown in FIG. 4, a large number of annular retaining teeth 15b are formed at the tip of the connecting pin 15, and each of the annular retaining teeth 15b has an acute angle in the retaining direction as shown.

The distal end of the connecting pin 15 formed with the annular retaining teeth 15b is inserted into the coupling hole 13 of the retaining portion 10, and then the cylindrical portion 14 is compressed into a polygon, for example, a hexagonal cross section, to thereby form the coupling. When the inner wall of the hole 13 is cut into the annular retaining teeth 15b, the connecting pin 15 is firmly fixed to the retaining portion 10.

The hanger rod holder 3 has rod holes 17 on both sides, and each of the rod holes 17 has a thin cut 18 on its side. The width of the cut 18 is the rod hole 1
7 is smaller than the diameter. Hanger rod 4 uses metal bar as U
It is bent into a shape, and an insulating portion covered with, for example, vinyl chloride or the like is formed at most of the center except for both ends. The hanger rod 4 has a head 21 at both ends and a circular section 22 following the head. The circular section 22 has a diameter smaller than the diameter of the head 21 and slides with the rod hole 17 of the holder 3. The thin section 23 having a diameter that can be fitted and following the circular cross section 22 passes through the cut 18 and is fitted into the rod hole 17.

In order to hold an electric wire to a utility pole or the like using the end clamp according to the present invention, the clamp body 1 and the wedge member 2 are used.
6, the hanger rod 4 may be attached to the insulator 25 fixed to the utility pole 24, and the wedge member 2 may be connected to the utility pole as shown in FIG. Next, the stranded conductor W from which the insulation coating of the electric wire has been removed is engaged in the clamp groove 5 of the clamp body 1 and the clamp body 1 is connected to the wedge portion 8 as described above.
In FIG. 1 from the right side. In this state, the wedge member 2
When the clamp body 1 has advanced to some extent along the axis, it cannot be further advanced, and the clamp body 1 is located to the left of the wedge member 2.
Is prevented from falling off. Next, after hitting the right surface of the projection 7 of the clamp body with a hammer and fixing the stranded conductor W between the wedge portion 8 and the staple wire 12, insert the stake pin 12 into the retaining hole 11 exposed outside the clamp body 1. Clamp body 1
To keep it from falling out. The completion of the retaining operation can be confirmed by driving the embankment pin 12.

[0017]

According to the present invention, a retaining hole penetrating in the lateral direction is formed in the thin portion of the wedge portion facing the end face of the clamp member, and a shim pin is inserted into the retaining hole. After inserting the stranded wire conductor between the clamp body and the wedge member, insert the embedding pin into the retaining hole, the clamp body and the wedge member will be supported by the wire, so carelessly inserting the clamp body Even if the wedge member is dropped, these drops can be prevented beforehand, parts can be prevented from being lost due to the drop, and it can be confirmed that the termination work is inevitably completed. Further, in the electric wire retaining clamp of the present invention, since the clamp body is prevented from coming out of the wedge member by driving the embedding pin, the wedge can be operated even if the tension applied in the opposite direction to the normal is applied to the retained electric wire. There is no slippage.

[Brief description of the drawings]

FIG. 1 is a side view of a retention clamp according to the present invention.

FIG. 2 is a rear view of the retention clamp of FIG. 1;

FIG. 3 is a side view of FIG. 1 as viewed from the left.

FIG. 4 is a side view of a connecting pin.

FIG. 5 is a sectional view showing a part of an upper portion of the clamp body.

FIG. 6 is a view showing a state in which electric wires are retained.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clamp main body 2 Wedge member 2a Stepped portion 2b Central flat lower surface 2c Curved upper surface 3 Hanger rod holder 4 Hanger rod 5 Clamp groove 5a Shoulder portion 5b Upper surface 6 Sawtooth ridge 7 Driving projection 8 Wedge portion 10 Retaining portion 11 Retaining hole REFERENCE SIGNS LIST 12 emushi pin 13 joint hole 14 cylindrical part 15 connecting pin 15 a round head 15 b annular retaining tooth 17 rod hole 18 cut 21 head 22 circular cross section 23 thin part 24 power pole 25 insulator W stranded conductor

Claims (2)

[Claims] 1. An anchoring clamp comprising: a clamp body having a clamp groove formed therein; and a wedge member having a wedge portion for clamping an electric wire and an anchoring portion connected to a hanger rod holder between said clamp groove, In the thin portion of the wedge member facing the end face of the clamp body,
An electric wire anchoring clamp formed with a lateral retaining hole into which a shim pin can be inserted, and wherein the shim pin is inserted into the retaining hole to prevent disassembly of the clamp body and the wedge member. 2. A structure in which the clamp body can be inserted into the wedge member from the side of the plate stopper hole, and when the wedge member is inserted into the clamp body to some extent, the wedge member cannot be further advanced. The electric wire anchoring clamp according to claim 1, characterized in that: