JPS6120819Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a cable processing tool.

Conventionally, a general knife was used to peel off a cable's coating layer to a predetermined size, but it required skill to cut only the desired outer layer without damaging the inner layers or core wire. However, it was extremely difficult.

This invention is a completely new processing tool for peeling off the coating layer of cables, which was created in view of the above-mentioned circumstances.It can safely and beautifully remove the coating layer without damaging the core wire or internal layers, and without requiring any skill. Therefore, the feature of the present invention is that the tip of the knife has a tapered shape and is curved downward, and a small guide plate for separating the boundary surface of the coating layer is attached to the tip. R-shaped curved blade portions are provided on the inner and outer sides of the knife, and the thickness of the portion of the knife excluding the curved blade portion gradually increases as the distance from the tip increases. The curved edge portion of the curved edge has an acute angle with the small guide plate.

Hereinafter, the present invention will be explained in detail based on the illustrated embodiments.

1 is a cable, for example, two core wires 2, 2
are coated with inner coating layers 3, 3, respectively, and further, the two inner coating layers 3, 3 are integrally covered with an outer coating layer 4 having an outer peripheral surface having an elliptical cross-sectional shape. (Figs. 1 to 5) Reference numeral 5 denotes a processing tool used to peel off the coating layer of the cable 1 by a predetermined length from its end, for example, when only the outer coating layer 4 is to be peeled off. They are shown in sequence in Figures 1, 3, 4, and 5.

Thus, the processing tool 5 includes a knife 6, a gripping part 7 to which the proximal end thereof is fixed in a buried manner, and a small guiding thin plate attached to the distal end part 8 of the knife 6 for separating the boundary surface of the coating layer. It consists of 9. The grip part 7 has a size that is easy to grasp with one hand A, and has a finger recess 1.
0... is provided, and the base of the knife 6 is integrally embedded, the whole being made of plastic, rubber or wood. Further, the knife 6 has a tapered shape and is curved downward, so that the knife 6 has a shape similar to the half of a three-month moon. The portion of the knife 6 other than the curved blade portions 12 and 13 is formed so that the wall thickness gradually increases as the distance from the tip portion 8 increases. Furthermore, the small guiding thin board 9 is shaped like an elongated tree leaf in plan view, and has a shape similar to a surf-in board.

As shown in FIG. 2, an elongated hole 11 is made near the center of the small thin plate 9, and the tapered tip 8 of the knife 6 is inserted into the hole. It has an integrated structure. And the knife 6 is double-edged,
Blade portions 12 and 13 are formed on both the inside and outside of the curve, and can cut not only when the knife 6 is pulled as shown in the figure, but also when the knife 6 is pushed in in the opposite direction (not shown). In addition, as shown in FIG. 2, the blade portion 12 or the blade portion 13
However, it is desirable that the angles α and β formed with the small thin plate 9 be approximately 60 to 85 degrees. Moreover, although the inner blade part 12 is provided along the entire length up to the grip part 7, it is preferable from the viewpoint of safety that the outer blade part 13 is provided only in the vicinity of the small thin plate 9.

Then, as shown in FIG. 1, a small guiding thin plate 9 is pushed into the interface between the inner coating layers 3, 3 and the outer coating layer 4 at the end face of the cable 1 from the inner tip.
Next, if you pull strongly in the direction of arrow B in Figure 3, the fourth
As shown in FIG. 3 and FIG. 3, the small guide plate 9 separates the interface between the inner and outer coating layers 3 and 4 and is guided while sliding on the surface of the inner coating layer 3 without biting into it. The blade part 12 slides into the inner surface of the layer 4 without biting into it and is prevented from floating, and the blade part 12 moves smoothly while sequentially cutting the outer coating layer 4 in the longitudinal direction B.

After making a longitudinal cut over a predetermined length in this way, as shown in FIG. Inner and outer coating layers 3, 4 by the plate 9
cut to an even depth to the interface. In that way, a predetermined length of the outer covering layer 4 can be removed from the end.

In the embodiment shown in FIG. 6, the cable 1 has a mesh wire 2a, and when the coating layer 4a is to be peeled off, a small thin plate 9 is formed on the interface between the mesh wire 2a and the coating layer 4a. By embedding and running the mesh wire 2a, the covering layer 4a is cut to a uniform depth without any damage to the mesh wire 2a and no cut residue, and can be easily peeled off.

The present invention has effectively achieved the intended purpose with the above-mentioned configuration, and it is possible to cut only the coating layer to be cut to a uniform depth (thickness) without causing any damage to other coating layers or the core wire. Not attached. Moreover, once the small guide thin plate 9 is embedded from the end face of the cable, the knife tip will not come off unexpectedly during cutting, and the cut will not be too deep, making it safe and easy to cut without requiring any skill. Cutting and peeling work can be done quickly and easily.
R-shaped curved blade portions 12 and 13 provided on the knife 6
Since the angles α and β between the small guide plate 9 and the thin guide plate 9 are configured to be acute angles, the blade portions 12 and 13 do not hit the coating layer at right angles when cutting in any direction, and are cut at an angle. It is possible to cut with a small amount of force by pulling and pushing in this state. In addition, since the portion of the knife 6 excluding the curved blade portions 12 and 13 is formed so that the wall thickness gradually increases as the distance from the tip portion 8 increases, the incised portion of the coating layer is pushed more toward both sides as it approaches the surface. Curved blade part 1 as a result of being opened
The frictional resistance with the coating layer during cutting of Nos. 2 and 13 is greatly reduced. This is particularly advantageous in the case of large layer thicknesses. Of course, the cable 1 can be applied to various shapes, structures, and types, and in particular, it is possible to safely and reliably cut and peel thick coating layers to a uniform depth, which was difficult in the past. You can. In addition, the thickness of the coating layer to be cut and peeled can be varied steplessly from small to large, and the practical effect is significant in addition to the simple structure.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the present invention in a state just before the start of cutting, Fig. 2 is an enlarged partial sectional view of main parts, Fig. 3 is a partially sectional side view of a state in the middle of cutting, and Fig. 4 is a perspective view of an embodiment of the present invention. The same enlarged view, FIG. 5 is a perspective view showing a state of cutting in the circumferential direction, and FIG. 6 is a perspective view of a state immediately before the start of cutting of different types of cables. 1... Cable, 6... Knife, 9... Small induction board.

Claims (1)

[Scope of utility model registration request] Knife 6 with a tapered shape and a downward curve
A small guide plate 9 for separating the boundary surface of the coating layer is attached to the tip 8 of the knife 6, and R-shaped curved blade parts 12 and 13 are provided on the inner and outer sides, respectively. The portions excluding the blade portions 12 and 13 are formed so that the wall thickness gradually increases as the distance from the tip portion 8 increases, and the angle α between the R-shaped curved blade portions 12 and 13 and the small guiding thin plate 9, A cable processing tool characterized in that all β angles are acute angles.