JPH10108343A - Clamp for nonround cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clamp which effectively catches a cable nonround in section such as a low wind sound cable or the like. SOLUTION: A clamp is equipped with a clamp body 1 which has a semicolumnar recess 1A and a cover 2 which has a semicolumnar recess 2B, being screwed with this body 1, and catches a cable W nonround in section through a tubular collar 3 in the space surrounded by both recesses 1A and 2A. Here, the tubular collar 3 is constituted by hinging two semitubular members freely of opening and closing, and it possesses an inside periphery to fit the form of the outside periphery of a nonround cable W, and also it is connected to at least one side of the clamp body 1 or the cover 2 by a linear body (wire 4). Therefore, the tubular collar 3 can be put in and taken out from between both recesses 1A and 2A, and it never falls during work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low wind noise electric wire, etc.
The present invention relates to a clamp for gripping a non-circular electric wire.

[0002]

2. Description of the Related Art A clamp described in Japanese Patent Application Laid-Open No. 6-70432 is known as a clamp for gripping an electric wire having a non-circular cross section. This grips an electric wire between a clamp body and a lid via a cylindrical collar. This cylindrical collar is
Because it has an inner peripheral shape that fits the outer peripheral shape of the electric wire,
The entire circumference of the electric wire can be reliably held. In addition, the tubular collar is connected to the clamp body or the lid by a band-shaped member or a dovetail, so that it can be prevented from dropping during construction.

[0003]

However, in the clamp described above, the movable range of the cylindrical collar is very limited.
That is, the cylindrical collar can rotate to a certain extent in the space formed between the clamp body and the lid. Therefore, there is a problem that workability when gripping the electric wire with the clamp is insufficient.

[0004]

In order to solve the above-mentioned problems, the present invention comprises a clamp body having a semi-cylindrical recess, and a lid hinged to the body and having a semi-cylindrical recess. A clamp for holding an electric wire having a non-circular cross-section through a cylindrical collar in a space surrounded by both concave portions, wherein the cylindrical collar is configured by hingedly opening and closing two semi-cylindrical members in an openable and closable manner. The non-circular electric wire has an inner peripheral surface fitted to the outer peripheral shape, and is connected to at least one of the clamp body and the lid by a linear body.

Here, it is desirable that the linear body is configured to be automatically wound around at least one of the clamp body and the lid. Further, it is preferable that the linear body has such a length that the cylindrical collar can be drawn out of the space surrounded by the two concave portions.

[0006]

Embodiments of the present invention will be described below. FIG. 1 is a side view showing an open state of the clamp of the present invention, and FIG. 2 is a sectional view showing a closed state.

As shown in the figure, the clamp of the present invention comprises a main body 1 and a lid 2, and a cylindrical collar 3 is provided on each inner periphery of the main body 1 and the lid 2.
Through which the electric wire W having a non-circular cross section is gripped.
The cylindrical collar 3 is connected to the main body 1 by a wire 4 (linear body).

(Main body and lid) Clamp body 1 and lid 2
Are formed with semi-cylindrical recesses 1A and 2A (see FIG. 1) into which electric wires are fitted, and are hinged by a shaft 5 to be freely opened and closed. When the lid 2 is closed, a tightening mechanism for tightening the lid 2 is also integrated with the clamp body 1.

The tightening mechanism includes a U-shaped portion 7 having a bolt hole 6.
And a built-in tightening shaft 9 pressed by a compression spring 8. Although not clear in the figure, a tip of the lid 2 is formed into a forked portion 2B, and a T-shaped engaging portion 10 that fits into the forked portion 2B is pivotally supported at the tip of the tightening shaft 9. . Further, the engaging portion 10 is pressed by the torsion spring 11 in the direction of the arrow.

When the cover 2 is opened, a bolt 12 is screwed into the U-shaped portion 7 and the tightening shaft 9 is pushed against the repulsive force of the spring 8 as shown in FIG. At the same time, the engaging portion 10 is also
The lid 2 can be opened by rotating the engaging portion 10 to release the engagement with the forked portion 2B of the lid 2. Conversely, when closing, the lid 2 is closed, the engaging portion 10 is engaged with the forked portion 2B, and the bolt screwed into the U-shaped portion 6 is pulled out. 9
Is pushed to the bolt hole 6 side to tighten the main body 1 and the lid 2. The mounting shaft 13 integrated with the U-shaped portion 7
Is connected to a main body (not shown) such as a transmission line spacer.

(Cylindrical Collar) On the other hand, the cylindrical collar 3 has a semi-cylindrical member hinged thereto and is configured to be freely opened and closed. 2
The two semi-cylindrical members are connected by a band-shaped member 3A (see FIG. 1). The outer peripheral surface of the cylindrical collar 3 is a semi-cylindrical recess 1A, 2
A is formed by a cylindrical surface fitted to A, and an inner peripheral surface is formed in a shape to be fitted to an outer peripheral shape of the non-circular electric wire. In this example,
Since the electric wire has a spiral projection, the inner peripheral surface of the cylindrical collar has a spiral groove 3B.

The length of the cylindrical collar 3 in the axial direction is substantially equal to the width of the main body 1 or the lid 2 so that there is no portion protruding from the main body 1 or the lid 2. Thereby, generation of corona can be effectively suppressed.

[0013] One end of a wire 4 is fixed to the band-shaped member 3A of the cylindrical collar 3. Wire 4 and strip
Bonding with 3A may be performed by using an appropriate means such as an eyelet.
This joining is desirably performed so that the portion protruding to the outer periphery when the cylindrical collar 3 is closed is as small as possible. The other end of the wire 4 penetrates the main body 1 and is guided inside.

(Wire Winding Mechanism) The wire 4 connecting the cylindrical collar 3 to the main body 1 is wound up and stored in a mainspring case 20 (see FIGS. 1 and 2) fixed in the main body. FIG. 3 shows the configuration of the mainspring case 20. The mainspring case 20 includes an outer case 21, a rotating portion 22 that rotates inside the outer case 21 with respect to the outer case 21, and a mainspring 23.

The outer case 21 (see FIGS. 3A and 3B) is a flat cylindrical container having a lid (not shown). It has a projection 25 in the shape of a circle. In addition, a chordal groove 26 is formed on the end face of the projection 25.

The rotating part 22 (see FIGS. 3A and 3C) is
Is a disc-shaped object that is stored in the
An annular projection 28 having 27 is provided, and the mainspring 23 is housed in a portion surrounded by the annular projection. Grooves 29 on the outer circumference
Is formed, and a wire is wound around the groove 29. A circular hole 30 that fits into the projection 25 of the outer case 21 is formed at the center.

The spring 23 is formed by spirally winding a metal band, and its outer peripheral end is bent into a U-shape and its inner peripheral end is bent into an S-shape. The material and structure of the wire 4 may be any as long as the wire 4 has sufficient strength to connect the tubular collar 3 to the main body 1 (the lid 2). If the length of the wire 4 is set to such a length that the tubular collar 3 can be pulled out from the space surrounded by the concave portions 1A and 2A of the main body 1 and the lid 2, the movable range of the tubular collar 4 is large and the workability is improved. This is desirable.

The mainspring case 20 is configured as follows. One end of the wire 4 is fixed to the outer periphery of the rotating portion 22 and wound around the groove 29 on the outer periphery. In that state the protrusion in the outer case
Insert the circular hole 30 of the rotating part into 25, and rotate the rotating part 22 into the outer case.
And the other end of the wire 4 is pulled out of the outer case 21.
Withdraw from 24. Rotate the outer peripheral end of the spring 23
At the end of the annular projection 28 formed by the notch 27 in FIG. At the same time, the inner peripheral end of the mainspring 23 is
Over the groove 26 formed on the projection 25. That is, the inner peripheral end passes along the outer periphery of the projection 25 and then through the groove 26, and
It is arranged along the outer circumference of 25. Finally, the lid of the outer case 21 is attached.

With this configuration, a rotating force can be applied to the rotating unit 22 counterclockwise in FIG. 3A. Wire 4
Is pulled out, the rotating unit 22 is rotated clockwise. And
When the wire 4 is released, the rotating part is
22 rotates counterclockwise and winds up the wire 4.

(Electrical Wire Grasping Procedure) The tubular collar 3 is pulled out with the clamp lid 2 opened. The cylindrical collar 3 is opened, and the non-circular electric wire is sandwiched by this. At this time, since the cylindrical collar 3 can be pulled out to a position distant from the clamp body 1 and the lid 2 and can be moved and rotated in a free direction, the work of fitting the outer periphery of the electric wire can be easily performed. The electric wire is pinched so that the protrusion of the electric wire fits into the groove 3B on the inner surface of the cylindrical collar.

Next, the cylindrical collar 3 attached to the outer periphery of the electric wire between the two concave portions 1A, 2A formed in the main body 1 and the lid portion 2.
In between. At this time, the wire 4 is automatically wound into the mainspring case 20 by the action of the mainspring 23.
When the lid 2 is closed and the cylindrical collar 3 is sandwiched, the T-shaped engaging portion 10 is fitted into the forked portion 2B of the lid 2, and the bolt 12 is removed. The wire is clamped between. As a result, the entire circumference of the electric wire is pressed by the interposition of the cylindrical collar 3 and is reliably held.

When the clamp is removed from the wire, the bolt 12 is screwed into the U-shaped portion 7 to move the tightening shaft 9 in the axial direction. Bifurcation
Remove from 2B and open lid 2. Then, the tubular collar 3 may be opened and removed from the electric wire.

[0023]

As described above, according to the clamp of the present invention, by connecting the cylindrical collar to the main body and the lid with a linear body, it is possible to prevent the cylindrical collar from dropping during the work of the steel tower and to prevent the cylindrical collar from falling. The movable range of the shape collar can be increased. Therefore, the workability when gripping the electric wire with the clamp can be improved. Therefore, it is effective to use the clamp of the present invention as a spacer of a transmission line.

[Brief description of the drawings]

FIG. 1 is a side view showing an opened state of a clamp of the present invention.

FIG. 2 is a sectional view showing a closed state of the clamp of the present invention.

FIG. 3 shows a mainspring case, (A) is an internal structure diagram,
(B) is a side view of an outer case, (C) is a side view of a rotating part.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Main body 1A recessed part 2 Lid part 2A recessed part 2B Forked part 3 Cylindrical collar 3A Band-shaped member 3B groove 4 Wire 5 Shaft 6 Bolt hole 7 U-shaped part 8 Spring 9 Tightening shaft 10 Engaging part 11 Torsion spring
12 Bolt 13 Mounting shaft 20 Spring case 21 Outer case 22
Rotating part 23 Mainspring 24 Pull-out hole 25 Projection 26 Groove
27 Notch 28 Annular protrusion 29 Groove 30 Circular hole

Claims (3)

[Claims] 1. A clamp body having a semi-cylindrical concave portion, and a lid hinged to the main body and having a semi-cylindrical concave portion, and having a cross section through a cylindrical collar in a space surrounded by both concave portions. Is a clamp for gripping a non-circular electric wire, wherein the tubular collar is formed by hingedly opening and closing two semi-cylindrical members, and has an inner peripheral surface fitted to an outer peripheral shape of the non-circular electric wire. A clamp for a non-circular electric wire, comprising a clamp and a linear body connected to at least one of a clamp body and a lid. 2. The clamp for a non-circular electric wire according to claim 1, wherein the linear body is automatically wound around at least one of the clamp body and the lid. 3. The clamp for a non-circular electric wire according to claim 1, wherein the linear body has a length that allows the cylindrical collar to be drawn out of a space surrounded by the two concave portions.