JPH0379154B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wire fastener used for forming a loop in a wire.

[Conventional technology and its problems]

Generally, when forming a loop in a wire, the wire is bent into a U-shape, and the straight portions extending from the bent portion are overlapped with each other and tightened with a wire clip. Here, the wire clip consists of a U-shaped bolt 21 and a tightening plate 23 having a bolt insertion hole 22, as shown in FIG.
The bolt 21 is tightened by rotating a nut 24 screwed onto both ends of the bolt 21.

By the way, conventionally, to form the loop as described above, the user grasps the straight part of the wire bent into a U-shape with bare hands and attaches a wire clip to the two wires stacked on top of each other, which is a time-consuming process. If the wire has a large diameter, the reaction force will be large and several workers will be required.

Furthermore, as the shape of the loop becomes smaller, the reaction force of the wire applied to the hand increases, making it difficult to directly clamp the vicinity of the loop between the bolt 21 and the plate 23. A method is used in which the wire clip 20 is attached and moved toward the loop portion, and then the nut 24 is tightened. However, this method requires extra work and is inefficient, and requires a large amount of force when moving the wire clip 20.

Furthermore, when a rotational torque is applied to the nut 24 with a spanner or the like, the wire A is bent and the wire clip 20 is shaken considerably, so that the nut 24 cannot be firmly tightened and is likely to come loose. .

[Purpose of the invention]

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a wire fastening tool that allows a wire loop to be easily formed by one worker.

[Means for solving problems]

In order to achieve the above object, the present invention includes a pair of clamping arms that open and close in conjunction with the opening and closing operations of a pair of handles, and a bifurcated piece is attached to the tip of one clamping arm of the pair of arms. A clamping plate of the wire clip is provided between the two halves with a space therebetween so that the clamping plate of the wire clip can be fitted thereto, and an engaging groove into which a part of the wire can be fitted is formed on the opposing surfaces of the bifurcated piece and the other clamping arm. The clamping arm has a bolt guide portion into which a U-shaped bolt of a wire clip to be fitted on the outside of the wire can be fitted.

[Effect]

Fit the straight part of the wire bent into a U-shape into the engagement groove of the bifurcated piece and the other clamping arm, move the clamping arms closer together by operating the handle, and clamp the wire between the clamping arms. are closely attached between the two forked pieces and overlapped in a straight line. Therefore, next, the U-shaped bolt can be fitted from the bolt guide, and the wire can be inserted between the U-shaped bolt and the tightening plate inserted between the two forked pieces.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 to 4, the fastener of this embodiment includes a fixed handle 1 (hereinafter referred to as fixed handle) and a movable handle 2 (hereinafter referred to as movable handle). The rear end of a clamping arm 3 is fixed to the tip of the fixed handle 1. Further, at the distal end of the fixed handle 1, one of two forked parts provided at the rear end of the clamping arm 4 is swingably supported via a pin 5, and the other of the forked parts is supported by the movable handle 2. The tips of the two are rotatably connected via a pin 6.

Further, one end of a link 7 is movably connected to the rear end of the fixed handle 1 via a pin 8.
The other end of the link 7 is rotatably connected to the tip of the movable handle 2 via a pin 9. With this structure, when the pair of handles 1 and 2 are opened and closed, the pair of clamping arms 3 and 4 are opened and closed. In this case, a clamping arm 4 (hereinafter referred to as a movable clamping arm) rotatably connected to the handles 1 and 2 opens and closes with respect to a clamping arm 3 fixed to the fixed handle 1 (hereinafter referred to as a fixed clamping arm). The pair of clamping arms 3 and 4 have a spring 1 stretched between the rear end of the movable clamping arm 4 and the fixed handle 1.
It is held open or closed by zero elasticity.

That is, until the three pins 6, 8, and 9 are aligned in a straight line, the elasticity of the spring 10 is applied in the direction of separating the pair of clamping arms 3, 4 from each other, that is, in the direction of opening the handles 1, 2. acts,
When you release your hand, the movable handle 2 returns to its original position. On the other hand, when the movable handle 2 is further pushed down, the position of the pin 9 is changed from the line connecting pins 6 and 8 to the fixed handle 1.
When the handles 1 and 2 are moved closer to each other, the elasticity of the spring 10 acts in the direction of bringing the handles 1 and 2 closer together, so that even if you release your hand from the movable handle 2, the handle 2 will not be pulled back, and both gripping arms 3 and 4 will be moved closer together. can be kept close to each other.

As shown in FIGS. 1 and 3, the distal end of the fixed side clamping arm 3 has a V-shaped engagement groove 11 into which a part of the wire A is fitted, and a wire clip 20.
A bolt guide part 12 is formed that passes through the bolt guide part 12 vertically and can support a U-shaped bolt 21, and the wire A is tightened with the bolt 21 fitted and supported by the bolt guide part 12.

On the other hand, a second
As shown in the figure, bifurcated pieces 13, 13 are provided with a space between them so that the tightening plate 23 of the wire clip 20 fits, and a wire A is attached to the tip of each piece. A semicircular engagement groove 14 into which a portion is fitted is formed.

A bolt 15 whose tip abuts the rear end of the link 7 is attached to the rear end of the fixed handle 1. When the bolt 15 is rotated, the link 7 tilts when the handles 1 and 2 are closed. Since the angle changes and the distance between the handles 1 and 2 changes, the closest distance between the pair of clamping arms 3 and 4 can be changed.

Furthermore, a lever 16 for returning the handle is attached to the rear end of the movable handle 2.
When trying to pull back the handle 2 from a depressed state, by pushing down the rear end of the handle 16 and lifting the movable handle 2, it becomes easier to pull back later and the movable handle 2 suddenly moves. It works to prevent splashes.

The fastener of this embodiment has the above-mentioned structure, and as shown in FIG.
A part of the overlapping wire A is formed into a loop in the engagement grooves 11 and 14 of 4, and both clamping arms 3 and 4 are brought close together by closing the handles 1 and 2. Wire A is held between 3 and 4 and pressed together. As a result, the wire A is brought into close contact with the forked pieces 13 and overlapped in a straight line. In this case, a U-shaped bolt is fitted into the bolt guide portion 12 in advance, and after tightening the wire A, a nut 24 is attached to the end of the bolt and tightened.

This tightening work of the nut 24 can be performed while holding the wire clip 20 with a tightening jig. Therefore, the wire clip 20 can be held in a stable state during the work, so that reliable tightening can be achieved. can be done.

FIG. 5 shows another embodiment of the bolt guide section, in which the bolt guide section 12' has an open end and is shaped like a U-shaped groove. In this case, attach the U-shaped bolt 21 of the wire clip 20 to the movable side clamping arm 3.
The bolt 21 can be fitted onto the wire A by being turned around from the distal end side, and better workability can be obtained than in the case where the bolt 21 is supported by the clamping arm 3.

Further, in this embodiment, the fixed side clamping arm 3 is provided with the bolt guide part 12, and the movable side clamping arm 4 is provided with the bifurcated pieces 13, 13, but even if this positional relationship is reversed, it is the same as 4. of work can be obtained.

[Effect] As explained above, according to the present invention, the wires are closely stacked and sandwiched in a straight line between a pair of clamping arms that are opened and closed by operating the handle, and in this state, the wires are tightened with the U-shaped bolt. Since the attachment plate is attached, the wire clip can be attached at an appropriate position on the wire, and therefore a loop of the wire can be formed very easily by one worker.

Further, when tightening the nut of the wire clip, the wire is supported at two places by the pair of clamping arms, so the wire does not deform even if rotational torque is applied to the nut, and firm tightening can be achieved.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view showing a fastener according to an embodiment of the present invention with a wire clip attached;
Fig. 2 is a plan view of the same as above, Fig. 3 is a front view of the above fastener, Fig. 4 is a perspective view showing the above fastener and wire clip, and Fig. 5 is another embodiment of the bolt guide section. FIG. 3 is a plan view showing an example. 1, 2... Handle, 3, 4... Clamping arm,
11... Engagement groove, 12... Bolt guide part, 13...
...Bifurcated piece, 14...Engagement groove, 20...Wire clip, 21...U-bolt, 23...Tightening plate, A...Wire.

Claims (1)

[Claims] 1. A pair of clamping arms that open and close in conjunction with the opening and closing operations of a pair of handles, a two-pronged piece at the tip of one of the pair of clamping arms, and a wire clip tightening plate between the two pronged parts. An engagement groove is formed on the opposing surface of the bifurcated piece and the other clamping arm so that a part of the wire can fit therein, and the other clamping arm has a groove that can be fitted on the outside of the wire. A wire fastener with a bolt guide into which the U-shaped bolt of the mating wire clip can fit.