JPH10285734A - Wire-tensioning tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire-tensioning tool with high structural strength and safety which can conduct anchoring and tensioning operations of a cable or the like easily and smoothly without damaging the cable or the like, and hold an anchoring condition without falling of the cable, even if the cable or the like is relaxed. SOLUTION: A cable D or the like is clamped by a clamp fixed receiving part 2 for clamping formed at the single surface of a back plate 1, and a clamping roller 8, capable of sliding along a roller guiding groove 7 formed inclining to the back plate 1. When the cable D or the like is pulled, a spring 6 acts to push it from behind through the clamping roller 8, and therefore the cable D or the like is tightened, being guided by a guide roller 4 while rotating the clamping roller 8, coming into sliding contact with the fixed receiving part 2 for clamping. When the cable D or the like tries to relax in an reverse direction, the spring 6 acts in a direction such that it pushes back the cable D or the like, while damping the rotation of the clamping roller 8. Therefore, it is possible to prevent it from relaxing. A lid plate 12 is closed to prevent the cable D or like from falling.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an electric cable (including a communication cable), a messenger wire, etc.
The present invention relates to a wire-tightening tool used for tensioning a cable or the like when wiring a cable or the like).

[0002]

2. Description of the Related Art As this kind of conventional tightening tool, for example, one having a structure in which a cable or the like is clamped and moored by a vise clamp is known. However, with such a structure,
Even if the cable or the like is clamped, one side (one side) of the cable or the like is exposed as it is from between the clamps, so there is no problem if the cable or the like is constantly tightened in one direction. However, if the cable or the like is loosened, there is a risk of falling off from between the clamps.
Further, it is necessary to repeat clamping and releasing by a clamp until the cable or the like is brought into a predetermined tension state, and there is a problem that the operation is troublesome or the cable or the like is damaged.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems and to make it possible to easily and smoothly operate the mooring and tensioning of cables and the like without damaging the cables and the like. An object of the present invention is to provide a tightening tool that can maintain a mooring state without falling off even if the parts are relaxed, and have high structural strength and high safety.

[0004]

According to the present invention, there is provided a tool for tightening a wire, which is provided with a fixing receiving portion for holding on one surface of a back plate.
A roller guide groove is provided on the back plate so as to be inclined so as to widen an interval from the holding fixed receiving portion from one end to the other end, and a holding roller is slidably mounted in the roller guide groove, and the holding roller is Is urged by a spring in a direction to reduce the distance between the holding roller and the holding portion for holding, so that a cable or the like passed between the holding roller and the holding member for holding can be connected to the holding roller and the holding member for holding. So that it can be pinched. A pair of guide rollers for guiding cables and the like are supported by a pair on the back plate on both sides of the holding support portion for holding, and a guide portion by these guide rollers and a holding portion by the holding roller and the holding support portion for holding are attached to the back plate. And a cover plate that is opposed to the cover plate is hinged to the back plate.

According to such a tightening tool, when a cable or the like is passed between the holding fixture for holding and the holding roller, the holding roller is attached by a spring in a direction to reduce the interval between the holding fixture for holding and the holding roller. The cables and the like are pressed against the fixing receiving portion for holding by the holding roller because they are urged, but the cable and the like are moved in one direction between the fixing receiving portion for holding and the holding roller, that is, the roller guide groove and the fixing receiving portion for holding. When the cable is pulled in the direction in which the distance between the cable and the cable is reduced, the spring acts to push the tension of the cable or the like through the clamping roller, so that the cable or the like slides on the clamping receiving portion and rotates the clamping roller. While being guided by the guide rollers, they are nervous.

However, when the cable or the like relaxes in the opposite direction to the above, the spring acts in a direction to push back the cable or the like while braking the rotation of the holding roller.
Relaxation of cables and the like is prevented.

The lid plate can be held closed with respect to the back plate by a thumb screw. If the roller guide groove that guides the tip of the shaft of the holding roller slidably is provided on the lid plate at an angle, the holding roller can be guided stably in cooperation with the roller guide groove of the back plate. it can.

In order to improve the operability, the holding roller can be slid along the roller guide groove by a lever mounted on the back plate.

When the cable or the like is pulled and tensioned, the holding roller is rotated as smoothly as possible, and when the cable or the like is going to relax, the holding roller is provided with a back plate so that a braking force against the holding roller is effectively applied. Is urged by a spring via a pusher mounted on the inclined base part.

In order to prevent a cable or the like sandwiched between the holding roller and the fixed receiving portion for holding from being accidentally dropped, the holding roller is
It is a drum-shaped roller with a narrow center.

[0011]

Next, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, a tightening tool A of this embodiment is removably attached to, for example, a beam portion C of a utility pole by a mounting bracket B, and tensions a cable D or the like to be wired using the tightening tool A. It is to let.

The tensioning tool A is located on one side (front side) of the back plate 1.
, A mechanism for holding and guiding the cable D or the like is mounted as follows.

That is, as shown in FIGS. 2 and 3, a holding member 2 for holding, which is a horizontally long rectangular body, is fixed to the upper center of one surface of the back plate 1 and is inclined at the lower center. The pedestal portions 3 are fixed, and they are vertically opposed to each other, and the upper edge 3a of the inclined pedestal portion 3 is inclined with respect to the straight lower edge 2a of the fixing receiving portion 2 for clamping. In FIG. 2, it gradually narrows from the right side to the left side. Further, on both sides, a pair of upper and lower guide rollers, that is, two pairs of guide rollers 4 are rotatably supported on one surface of the back plate 1, and the upper and lower guide rollers 4 can guide the cable D or the like straight through. ing.

A projecting portion 3b projecting upward from the lower end of the inclined upper edge 3a is formed in the inclined base 3, and a pusher 5 penetrates an inclined hole 3c provided in the projecting portion 3b. It has been installed. The pusher 5 is provided with a head 5b at the tip of a rod 5a and a stopper 5c at a rear end, and is slidable in parallel with the upper edge 3a of the inclined base 3. And this pusher 5 has its head 5b
2 is urged to the left in FIG. 2 by a coil spring 6 circling around the rod 5a between the protruding portion 3b of the inclined base portion 3.

The back plate 1 is provided with a roller guide groove 7 inclined between the holding fixture 2 for holding and the inclined base 3 in parallel with the upper edge 3a of the inclined base 3, and the roller guide groove 7 is provided. 7
One end of a roller shaft 9 of the sandwiching roller 8 is slidably fitted. The pinching roller 8 is a drum-shaped roller having a narrowed center so that the cable D or the like can be stably pinched with the pinching fixing receiving portion 2. The pinch roller 8 is urged obliquely upward and to the left in FIG. 2 by a spring 6 via a pusher 5 and a roller guide groove 7.
Can slide on the upper edge 3a of the inclined base 3 as it slides along.

On the back side of the back plate 1, a lever 10
Is rotatably supported by a shaft 11, and one end of a roller shaft 9 of the nipping roller 8 is passed through a long hole 10 a provided at a tip end of the lever 10, thereby holding the nipping roller 8.
And the lever 10 are connected so that the sliding operation of the holding roller 8 along the roller guide groove 7 can be performed by the lever 10.

A lid plate 12 having the same size and shape as the back plate 1 is hinged to a lower edge of the inclined base 3 by a hinge 13 so as to be freely opened and closed. When the cover plate 12 is closed until it comes into contact with the surface of the holding support portion 2 for clamping and the surface of the inclined base portion 3, the above-described component of the above-described component mounted parallel to the back plate 1 and mounted on the front side thereof is provided. In addition to covering all, the cable D etc. inserted so as to cross the two pairs of guide rollers 4 is also covered at the same time. The cover plate 12 is provided with an inclined roller guide groove 14 similar to the roller guide groove 7 of the back plate 1, and when the cover plate 12 is closed,
The nipping roller 8 can be stably and slidably guided by both of the roller guide grooves 7-14.

The cover plate 12 is provided with a hole or a recess 15 for fitting the tip of the roller shaft so that the guide roller 4 can be rotated stably. In order to fix itself in a closed state, a thumb screw 17 that can be screwed into a screw hole 16 at the center of the holding fixture 2 for clamping is attached.

On the other hand, a pivot bearing 18 is fixed to the center of the upper edge of the fixing receiving portion 2 for clamping, and the spherical portion 19a at the lower end of the turning bolt 19 is supported by this so as not to be pulled out. , Pivotable with respect to the pivot bearing 18. This turning bolt 19 is screwed through a screw hole 21 provided at the end of the arm 20 of the mounting bracket B, and the lower nut 2 screwed into the turning bolt 19
When the arm 20 is sandwiched between 2 and the upper wing nut 23,
The tensioning tool A is swingably suspended at the tip of the arm 20.

As shown in FIGS. 1, 6 and 7, the mounting bracket B has an arm 20 projecting from the back surface of a U-shaped mounting piece 24 which can be fitted to the outer periphery of a beam portion C of a utility pole. At the same time, a lower side 26a of an L-shaped stopper lever 26 made of a round bar is rotatably supported on a bearing 25 provided at the center of the lower surface of the mounting piece 24, so that the stopper lever 2
6 is rotatably supported, and a locking piece 28 having a flat Ω-shaped recess 27 is fixed to the upper surface of the mounting piece 24. Then, the mounting bracket B fits the upper portion of the stopper lever 26 in the upright posture into the concave portion 27 of the locking piece 28,
By holding the beam C by the stopper lever 26 and the mounting piece 24, the beam C can be detachably attached to the beam C. The upper portion of the stopper lever 26 is fitted so as to forcibly exceed the narrow portion of the concave portion 27, so that the fitting does not come off accidentally.

The tightening tool A having such a configuration is used, for example, as follows. As shown in FIG.
Is attached to the beam portion C as described above, and the main tightening tool A is hung at the distal end of the arm 20 as described above. Then, as shown in FIGS. Cable etc. D
Is inserted between two pairs of upper and lower guide rollers 4 so as to cross. At this time, the lever 10 is manually rotated clockwise in FIG. 2 so that the holding roller 8 does not press the cable or the like D against the lower edge 2a of the holding receiving portion 2 for holding.
The nipping roller 8 is moved rightward along the roller guide groove 7.

Since the nipping roller 8 is urged obliquely upward and to the left in FIG. 2 by the action of the spring 6, when the hand is released from the lever 10, the cable D and the like are connected to the nipping roller 8 and the nipping fixed receiving portion 2. And held in the same state.

As shown in FIGS. 3 and 5, when the cover plate 12 is closed and its state is fixed with the thumb screw 17, the cable D
Is prevented from dropping between the holding roller 8 and the fixed receiving portion 2 for holding. In this state, when the cable or the like D is pulled to the left in FIG. 2, the spring 6 acts to push the cable or the like D through the sandwiching roller 8.
The cable or the like D is slid while being guided by the guide roller 4 while rotating the holding roller 8 while slidingly contacting the lower edge 2a of the holding receiver 2 for holding. However, the cable D
When the cable 6 tries to relax to the right in FIG. 2, the spring 6 acts in the direction of pushing back the cable or the like D while braking the rotation of the sandwiching roller 8, so that the cable or the like is prevented from being relaxed. Even so, the cover plate 12 prevents the holding roller 8 from falling off from between the holding member 2 for holding.

[0024]

As described above, according to the tensioning tool of the present invention, a cable or the like is pulled while being clamped by the clamping receiving portion of the back plate and the clamping roller mounted on the back plate. The cable can be tensioned while rotating the pinching roller, and at the same time, the cable can be prevented from loosening and falling off, so that the cable can be moored and tensioned easily and smoothly without damaging the cable, etc. Even if it is relaxed, it can maintain the mooring state without falling off, and has high structural strength and high safety.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a use state of an example of a tightening tool according to the present invention.

FIG. 2 is a front view showing a state where a cover plate of the tensioning tool is opened.

FIG. 3 is a sectional view showing a state in which a cover plate is closed.

FIG. 4 is a side view showing a state where a cover plate is opened.

FIG. 5 is a side view showing a state where a cover plate is closed.

FIG. 6 is a side view of the mounting bracket.

FIG. 7 is a front view of the mounting bracket.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS A Tightening tool B Mounting bracket C Beam part D Cable etc. 1 Back plate 2 Clamping fixed receiving part 3 Inclined base part 4 Guide roller 5 Pusher 6 Spring 7 Roller guide groove 8 Nipping roller 9 Roller shaft 10 Lever 12 Cover plate 13 Hinge 14 Roller guide groove 17 Thumb screw 20 Arm

Claims (7)

[Claims] 1. A backing plate having a fixing receiving portion provided on one surface thereof, and a roller guide groove inclined to the backing plate so as to widen an interval from the fixing fixing receiving portion from one end to the other end. A nip roller is slidably mounted in the roller guide groove, and the nip roller is urged by a spring in a direction to reduce the distance between the nip roller and the fixed receiving portion for nip. A cable or the like passed between the fixed receiving portion is held between the holding roller and the fixed receiving portion for holding, and a guide roller for guiding the cable and the like is provided on the back plate on both sides of the fixed receiving portion for holding. A lid plate hinged to the back plate to support the pair of guide rollers and a portion covered by the guide rollers and a holding portion formed by the holding roller and the fixing receiving portion opposed to the back plate. Wire tool. 2. The tool according to claim 1, wherein the cover plate can be held in a closed state with respect to the back plate by a thumb screw. 3. The tightening tool according to claim 1, wherein a roller guide groove for slidably guiding the tip of the shaft of the holding roller is provided on the cover plate at an angle. 4. The tightening line according to claim 1, wherein the holding roller is slidable along a roller guide groove by a lever mounted on the back plate. tool. 5. The tightening tool according to claim 1, wherein the holding roller is urged by a spring via a pusher mounted on the inclined base of the back plate. 6. The tightening tool according to claim 1, wherein the holding roller is a drum-shaped roller whose center is narrowed. 7. A mounting bracket for supporting the entire tightening tool on a beam portion of a utility pole or the like, and the mounting bracket is provided with an arm which is detachably connected to a back plate of the tightening tool. The tensioning tool according to any one of claims 1 to 6, wherein