JPH08107622A - Wire anchor clamp - Google Patents

Abstract

PURPOSE: To easily insert a wire into the wire insertion port of a clamp body and to effectively prevent the carelessly dropping of the wire in the case of anchoring the wire or in the anchored state in a wire anchor clamp used in the case of wiring to anchor a support arm, etc., provided with a power line, etc., on a pole. CONSTITUTION: A wire anchor clamp comprises a clamp body 1 with C-shaped cross-section having a wire insertion port 1a on one side and formed with an inwardly tapered wedge piece insertion hole 10, and wire gripping members 2a, 2b having a wire grasping wedge piece 21 inserted into the hole 10, wherein a coupling member 3 for coupling the body 1 to a support arm, etc., on a pole via a tension insulator is provided separately from the body 2, and the body 1 is tiltably coupled to the member 3 at a lateral shaft 12 with the port 1a upward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire retaining clamp used for retaining and wiring a power line or the like on a support arm or the like provided on a utility pole.

[0002]

2. Description of the Related Art In general, a wire retaining clamp of this type has a wire body insertion opening on one side surface and a substantially C-shaped cross section in which a tapered wedge piece insertion hole is formed inward. An electric wire gripping member having a wedge piece for gripping an electric wire to be inserted into the one-sided insertion hole, and the clamp body is attached to a support arm or the like provided on a utility pole via a tension insulator and a wire to be retained is stretched. It is configured to be inserted into the electric wire insertion port of the clamp body in a state of being tensioned by a device or the like, and to hold and hold the electric wire by a wedge piece provided on the electric wire holding member. Note that the above wire tensioner etc. should be removed after the wire has been retained.

[0003]

However, in the conventional wire retractor clamp, the wire insertion port of the clamp body is generally opened in the lateral direction. Therefore, when inserting the wire, the wire is temporarily moved to the side of the clamp body. It is difficult to work because it has to be inserted into the above-mentioned insertion port after it has been put together. Therefore,
It is conceivable to provide the above-mentioned wire insertion port upward, that is, on the upper surface side of the clamp body, but the wire on the side that is strained when holding or holding the wire and the wire in the clamp body are almost the same straight line. If they do not match on the wire, the wire may fall out accidentally.

The present invention has been proposed in view of the above problems, and makes it possible to easily insert an electric wire into the above-mentioned electric wire insertion port, and to prevent the electric wire from being caught when or when the electric wire is held. An object of the present invention is to provide an electric wire retention clamp capable of reliably preventing the electric wire from falling off.

[0005]

In order to achieve the above object, an electric wire retracting clamp according to the present invention has the following structure.

That is, a clamp body having an electric wire insertion opening on one side and a tapered wedge piece insertion hole formed inwardly and having a substantially C-shaped cross section, and an electric wire grip for inserting into the wedge piece insertion hole. In an electric wire pulling clamp having an electric wire gripping member having a wedge piece, a connecting member for connecting the clamp body to a support arm or the like on a utility pole via a tension insulator is provided separately from the clamp body, and the connecting member is provided in the connecting member. It is characterized in that the clamp body is connected so as to be tiltable on a horizontal axis with the electric wire insertion port facing upward.

[0007]

[Operation] By connecting the clamp body to the connecting member with the wire insertion port facing upward as described above,
The wire can be easily inserted into the insertion port when holding the wire, and the clamp body is connected to the connecting member so as to be tiltable along the horizontal axis, so that the wire is tensioned when it is held or when it is held. It is possible to prevent the electric wire on the open side and the electric wire inside the clamp body from always matching substantially on the same straight line and from accidentally dropping the electric wire from the clamp body.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The wire retaining clamp according to the present invention will be specifically described below with reference to the embodiments shown in the drawings.

FIG. 1 is a plan view showing an embodiment of an electric wire retracting clamp according to the present invention, FIG. 2 is a front view thereof, FIG. 3 is a sectional view taken along the line AA in FIG. 1, and FIG. In B
4B is a cross-sectional view taken along the line B, and FIG. 4B is a right side view of FIG.

In the figure, reference numeral 1 denotes a clamp main body, which has a wire insertion opening 1a on one side and a tapered wedge piece insertion hole 10 formed inward, and is formed into a substantially C-shaped cross section. . In the wedge piece insertion hole 10, the wedge pieces 21 and 21 provided integrally with the pair of electric wire gripping members 2a and 2b, respectively.
Is accommodated and arranged so as to be movable in the left and right directions in FIGS. 1 and 2.

The wire gripping members 2a and 2b are openably and closably connected to a push-in bolt 4 which is rotatably provided on the projecting portion 11 of the clamp body 1, and the wire gripping members 2a and 2b and the wedge pieces 21 and 21 are connected. Concave groove 2 formed continuously on the facing surface
The electric wire gripping member 2a, 2b has a structure in which the electric wire is gripped between 2 and 22, and a tightening bolt 5 and a nut 6 for tightening and fixing the electric wire in the state in which the electric wire is gripped between the recessed grooves 22 and 22 on the free end side. And are provided. The tightening bolt 5 is rotatably connected to one electric wire gripping member 2a by a shaft pin 7, and the other electric wire gripping member 2b is the above tightening bolt 5 and a nut 6.
A U-shaped concave portion 8 is formed so that it can be engaged and disengaged while being screwed.

Further, the electric wire gripping members 2a and 2b have female screw holes formed in at least one of the electric wire gripping members 2a and 2b, and the push-in bolt 4 is
In the case of the drawing, the female screw hole 23 is formed in the electric wire gripping member 2a and the push-in bolt 4 is screwed in, and the push-in bolt 4 is loosely inserted into the hole 24 formed in the other electric wire gripping member 2b. I am letting you. The push bolt 4
The electric wire gripping members 2a and 2b are moved to the clamp body 1 side by screwing into the female screw hole 23, and the wedge pieces 21 and 21 provided integrally with the electric wire holding members 2a and 2b are inserted into the tapered wedge piece insertion hole 10 in the clamp body 1. The electric wire which has entered and is held in the concave groove 22 by the wedge action of the tapered wedge piece insertion hole 10 and the wedge pieces 21, 21 is firmly sandwiched between the wedge pieces 21, 21. Reference numeral 22a denotes a wire retaining projection formed on the inner surface of the concave groove 22 on the wedge piece 21/21 side, and 41 is interposed between the projecting portion 11 of the clamp body 1 and the head portion 4a of the push bolt 4. A compression spring for preventing loosening and cushioning, and a compression coil spring is used in the embodiment, but is shown in a simplified manner in the drawing.

In the figure, 3 is a connecting member for attaching and supporting the clamp body 1 to a supporting arm or the like on a utility pole (not shown) through a tension insulator, and the connecting member 3 is a pair of connecting plates 3a.
3b and a squeeze member 3c having a substantially V-shaped cross section integrally provided by welding or the like between the connecting plates 3a and 3b.
A connecting pin 31 for connecting an insulator is provided at one end of each of the connecting plates 3a and 3b, and the clamp body 1 is provided at the other end of each of the connecting plates 3a and 3b with the wire insertion port 1a facing upward. Horizontal shaft 12 ・ 12 integrally provided on both sides of the
Is rotatably connected about.

An elliptic retaining flange 12a is integrally formed at the tip of each of the horizontal shafts 12, and the flange 12a is inserted into the insertion holes 32 formed in the connecting plates 3a and 3b. The insertion hole 32 is formed in an oval shape slightly larger than the flange 12a so that the flange 12a can be inserted, and when the insertion hole 32 is inserted and connected as shown in FIG. The oval through hole 32 and the flange 12a are configured so as to be displaced in the long axis direction so as to be retained and locked.

Reference numeral 13 in the drawing is a rotation restricting stopper of the clamp body 1 with respect to the connecting member 3, and a small screw is used for the stopper 13 in the illustrated example, and an arc-shaped long hole 33 formed in one connecting plate 3b. The clamp main body 1 is screwed into the side surface of the clamp main body 1 via, and the clamp main body 1 is rotatable with respect to the connecting member 3 within the range of the arc-shaped elongated hole 33. Reference numeral 34 is a hook hole formed in the lower part of the connecting plate 3a for connecting the wire tension machine.

In holding the electric wire in the above structure, the other end of the connecting member 3 is shown in FIG. 5 with the clamp body 1 being connected to one end of the connecting member 3 as shown in FIGS. 1 and 2. It is connected to the tensile insulator G with a connecting pin 31. The tension insulator G is attached to a support arm or the like above the telephone pole, but is omitted in the figure. At that time, the wedge pieces 21, 21 of the electric wire gripping members 2a, 2b are the same as those shown in FIGS.
4 is released from the wedge body insertion hole 10 of the clamp body 1 by loosening the push-in bolt 4 from the state of FIG. The electric wire gripping members 2a and 2b are rotated to the position to release the upper portions.

In that state, the hook F of the wire tensioner T as shown in FIG. 5, for example, is hooked in the hooking hole 34 formed in the connecting plate 3a, and the wire gripper K is connected to the wire W at an appropriate position. The end of the cord S suspended around the wire tensioner T is wound up by the wire tensioner T to tension the electric wire W with a predetermined tension. As a result, the portion of the electric wire W on the left side of the gripper K in the drawing is stretched on the extension line of the center line X of the tension insulator G. The wire tensioner T and the wire gripper K described above are not limited to the illustrated examples, and various conventionally known structures can be used.

Then, the portion W1 of the electric wire W on the tensile insulator G side of the wire gripper K is pulled to pull the wedge pieces 21 and 21 and the electric wire gripping member 2a in the clamp body 1 from the electric wire insertion opening 1a of the clamp body 1. 2b by inserting the tightening bolt 5 into the U-shaped recess 8 of the wire gripping member 2b as shown in FIG. 6 and then tightening the nut 6 .21 and wire holding member 2a.2
Hold the wire between b and fix it temporarily. At this time, since the electric wire insertion port 1a is opened upward, the electric wire W can be easily inserted, and the clamp body 1 is rotatably connected to the connecting member 3.
Can be satisfactorily gripped in a state in which the direction of is substantially parallel to the electric wire W1 to be gripped.

Next, when the push-in bolt 4 is rotated with a spanner or the like to be screwed into the female screw hole 23 of the electric wire gripping member 2a, FIG.
As shown in, the electric wire gripping member 2a and the other electric wire gripping member 2b move to the clamp body 1 side. Along with that, the wedge pieces 21, 21 enter the tapered wedge piece insertion hole 10,
The wedge action pushes the wedge pieces 21, 21 in a direction in which they approach each other, and the electric wire W held between the wedge pieces 21, 21.
Is firmly sandwiched and fixed to prevent it from coming off.

When the tensioner T and the gripper K are removed in this state, the connecting member 3 is pulled by the tension of the electric wire W stretched by the tensioner T.
However, from the state shown in FIG. 7, the clamp main body 1 is rotated clockwise around the connecting pin 31 with the tensile insulator G at the same time as shown in FIG.
While the electric wire inside and the electric wire W on the tensioned side are aligned substantially on the same straight line, the clamp body 1 rotates counterclockwise in FIG. 7, and the electric wire W is tense as shown in FIG. And the center line of the clamp body 1 and the center line of the connecting member 3 and the tensile insulator move until they substantially coincide with each other. Thereby, the electric wire W can be satisfactorily retained.

At this time, as shown in FIG. 8, the electric wire on the non-tension side, that is, the portion W1 on the left side of the clamp body 1 in the figure, comes into contact with the straightening member 3c of the connecting member 3 to automatically bend. Therefore, it is not necessary to bend it manually or perform a curling work separately.

[0022]

As described above, in the wire retention clamp according to the present invention, the connecting member 3 for connecting the clamp body 1 to the tension insulator G provided on the support arm or the like on the utility pole is separated from the clamp body 1. Since the clamp body 1 is provided and connected to the connecting member 3 with the electric wire insertion port 10 facing upward, the electric wire W can be easily inserted into the insertion port 10 when the electric wire is retained in the clamp main body 1, and the clamp main body is also provided. Since 1 is configured to be tiltable with respect to the connecting member 3 by the horizontal axis 12, the electric wire on the side that is strained when the electric wire is held or in the held state and the electric wire inside the clamp body 1 are always substantially in the same straight line. It is possible to prevent the electric wire W from accidentally falling off the clamp body 1 in line with the line, and it is possible to hold the electric wire easily and reliably.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of an electric wire retention clamp according to the present invention.

FIG. 2 is a front view of the wire retention clamp in the above embodiment.

FIG. 3 is a sectional view taken along line AA in FIG. 1;

4A is a cross-sectional view taken along the line BB in FIG. (B)
Is a right side view of FIG.

FIG. 5 is an explanatory diagram showing a procedure for holding an electric wire.

FIG. 6 is an enlarged view of a main part showing a procedure for holding an electric wire.

FIG. 7 is an enlarged view of a main part showing a procedure for holding an electric wire.

FIG. 8 is an enlarged view of a main part showing a procedure for holding an electric wire.

[Explanation of symbols]

 1 Clamp body 1a Electric wire insertion port 10 Wedge piece 2a ・ 2b Electric wire gripping member 21 Wedge piece 3 Connecting member 4 Pushing bolt 5 Tightening bolt 6 Nut G G Tension wire insulator T Tensioner K Grip wire W Electric wire

Claims (1)

[Claims] 1. A clamp body having a substantially C-shaped cross section, which has an electric wire insertion opening on one side surface and has a tapered wedge piece insertion hole formed therein, and an electric wire grip for inserting into the wedge piece insertion hole. In an electric wire pulling clamp having an electric wire gripping member having a wedge piece, a connecting member for connecting the clamp body to a support arm or the like on a utility pole via a tension insulator is provided separately from the clamp body, and the connecting member is provided in the connecting member. An electric wire retention clamp, wherein a clamp body is connected so that the electric wire insertion port faces upward and is tiltable along a horizontal axis.