JPS6345781Y2 - - Google Patents

Description

[Detailed explanation of the idea] This idea is related to the tube cutter.

Conventionally, the work of stripping off the outer protective covering of a coated electric wire such as a cable has been carried out by cutting only the outer protective covering using an ordinary cutter. However, with this method, the adjustment of the depth of cut by the cutter relies extremely on the operator's intuition, so the stripping work is time-consuming and, for example, the depth of cut is It was too large and had the disadvantage of making cuts in the insulating coating that should not have been made, and even damaging the conductor wires.

In addition, in factories, etc., devices are used that automatically strip only the above-mentioned external protective coating, but since the outer diameter of the covered wire and the thickness of the external protective coating are fixed, it is versatile. In addition, it was too large to be used in the field.

The present invention solves the above-mentioned problems and is highly versatile, as both the outer diameter and thickness can be adjusted, and the outer protective coating can be removed easily, quickly, and reliably. The purpose of the present invention is to provide a small, lightweight, and inexpensive tube cutter capable of cutting. Therefore, the features of the present invention include a main body that swings open and close using a pivot as a fulcrum and holds the covered wire in a clamping manner, and a body that protrudes and retracts into the main body through a slit formed in the main body, The present invention is comprised of a cutting blade that cuts only the outer protective covering of the electric wire, and the clamping dimension of the main body and the protruding dimension of the cutting blade can be adjusted respectively.

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

In FIGS. 1 to 3, 1 is a main body consisting of upper and lower holding members 2 and 3, and these holding members 2 and 3 are swingably supported on a pivot shaft 6 via support parts 4 and 5, respectively. The main body 1 swings open and close about the pivot 6 as a fulcrum. Further, the upper and lower holding members 2 and 3 have the front portions separated by the clamping portions 7 and 5, respectively, with the support portions 4 and 5 as boundaries.
8. The rear part serves as gripping parts 10 and 11. Clamping part 7,
8, as shown in FIG.
a and 8a, respectively, and the clamping parts 7 and 8 hold a covered electric wire 9 such as a cable in a clamping manner. Reference numeral 12 denotes an elastic member for constantly elastically urging the main body 1 in the contraction/closing direction, and the elastic member 12 has both ends thereof fitted into recesses 13 and 14 inside the gripping parts 10 and 11, respectively. , is elastically interposed between the gripping parts 10 and 11. Therefore, the clamping parts 7 and 8 are normally in a contracted and closed state, and by gripping the gripping parts 10 and 11 against the elastic force of the resilient member 12, the clamping parts 7 and 8 are expanded. do. Further, the tips of the clamping parts 7 and 8 are formed into concave and convex shaped meshing parts 19 and 20 that mesh with each other during retraction and closing, and these meshing parts 1
The meshing of the wires 9 and 20 prevents the electric wires clamped in the clamping parts 7 and 8 from escaping to the right in FIG. 1, and securely clamps them.

Reference numeral 15 denotes an adjustment screw for adjusting the maximum dimension between the inner surfaces 7a and 8a of the clamping part 7Z8 in the contracted and closed state, that is, the clamping dimension L. The adjustment screw 15 is screwed into a screw hole 16 provided through the upper holding member 2. It is configured so that it is inserted and inserted, and its tip abuts against the inner surface of the lower holding member 3. Therefore, by screwing the adjusting screw 15 back and forth, the clamping dimension L can be set to a desired value.

17 is a cutting blade for cutting the external protective coating 18 of the covered electric wire 9 in the longitudinal direction of the covered electric wire 9,
The cutting blade 17 is fixed by appropriate means to the lower surface of a leaf spring member 23 attached to the outside of the upper holding part 7, and the leaf spring member 23 has its base end protruding from the outer surface of the upper holding part 7. It is screwed onto the support member 2 with screws 22. In addition, the cutting blade 1 of the upper holding part 7
A slit 24 through which the cutting blade 17 can be inserted is provided at a position corresponding to 7, and a pressing member 25 fixed on the upper surface of the leaf spring member 23 is pushed downward A as shown in FIG. By pressing with fingers, the leaf spring member 23 is elastically deformed as shown by the imaginary line, thereby causing the cutting blade 17 to fit into the slit 2.
4, and when the finger is released from the pressing member 25, the leaf spring member 23 returns to its original state as shown by the solid line due to its return elasticity, and the cutting blade 17 also returns to the inside of the slit 24. Exit to.

26 is an adjustment screw for adjusting the protrusion dimension l of the cutting blade 17 toward the inside of the clamping portion 7;
There are two on the left and right at the tip of 3 (see Figure 2). The adjustment screw 26 is screwed through the leaf spring member 23 from above, and its tip is configured to come into contact with the outer surface of the upper holding portion 7 when the leaf spring member 23 is elastically deformed. Therefore, adjustment screw 2
By screwing forward and backward 6, the amount of elastic deformation of the leaf spring member 2 can be regulated and the protrusion dimension l can be set to a desired value. Incidentally, the protrusion dimension l is determined when the cutting blade 17 covers not only the conducting wire 27 but also the conducting wire 27 when the covered electric wire 9 is held in a pinched manner by the holding parts 7 and 8 as shown in FIG. The setting is made so that only the outer protective covering 18 is cut without damaging the insulating covering 28 that is present. Therefore, the above-mentioned desired value differs depending on the outer diameter dimension of the covered electric wire 9 and the thickness dimension of the protective coating 28 of the electric wire 9.

Next, the procedure for actually stripping the outer protective covering 18 of the covered electric wire 9, for example, the cable, using a tube cutter will be explained.

First, as shown in FIG. 5, at the required length from the end of the cable 9, that is, the length at which the protective coating 18 is to be stripped, the entire circumference of the protective coating 18 is cut using an appropriate cutting means (not shown). Make a cut 29 and cut. Next, adjust the tube cutter adjustment screw 15.
is screwed forward and backward to set the clamping dimension L of the main body 1 to correspond to the outer diameter dimension of the cable 9 to be clamped.
After setting the protrusion dimension l corresponding to the thickness dimension of the protective coating 28 of the cable 9, the grip part 1 of the main body 1 is
0 and 11 with fingers to spread the clamping parts 7 and 8. Then, the cable 9 is interposed between the expanded gripping parts 7 and 8, and in this state, the fingers are attached to the gripping part 1.
0, 11, the clamping parts 7, 8 are released from the resilient member 1.
The cable 9 is contracted and closed by the elastic force of 2, and the cable 9 is held in a clamped manner. Next, in this state, the clamping parts 7, 8
by sliding it in the longitudinal direction of the cable 9 and cutting blade 1.
The position of the cutting edge 7 is aligned with the position of the cut 29 of the cable 9. Then, when the pressing member 25 is pressed downward A with fingers, the cutting blade 17 protrudes inside the main body 1 by a length l, and the protective sheath 18 of the cable 9
Break through only as shown in Figure 4. Next, in this state, when the cable 9 is pulled in the direction B as shown in FIG. 5, the cutting blade 17 makes a cut 30 in the longitudinal direction of the cable 9 in the protective coating 18, and the protective coating 18 is cut. . And finally, this cut 30
Peel off the protective coating 18 while opening it from side to side along the sides.

It should be noted that the present invention is of course not limited to the above-described embodiments, and is open to various design changes. For example, in the above-described embodiment, the holding parts 7 and 8 have opposing concave curved inner surfaces 7a and 8a as shown in FIG. For example, as long as the sixth
As shown in the figure, various modifications are possible. Also, a resilient member 1 for constantly resiliently biasing the main body 1 in the contraction/closing direction.
In addition to the spring, 2 may preferably be replaced with another material such as a plate spring. Furthermore, in the above embodiment,
Although the ends of the clamping portions 7 and 8 form meshing portions 19 and 20, the meshing portions 19 and 20 do not need to be formed. Furthermore, in the above embodiment, the cutting blade 17
is fixed to the plate spring member 23, and the adjustment screw 2
6 is configured to adjust the protruding dimension l of the cutting blade 17, but other configurations may be used as long as they have the same function, and the cutting blade 17 may be attached to the lower holding portion 8. . Furthermore, in the above embodiment, when the protective coating 18 is peeled off, in addition to the tube cutter of the present invention, a cutting means for making cuts 29 all around the protective coating 18 is used. It is also preferable that a part of the main body 1 be provided with a cutting section (not shown) having the same function as the cutting means.

The present invention has the configuration described in detail above, and has effectively achieved its intended purpose. In particular, the clamping dimensions of the main body that holds the covered wire in a clamping manner are adjustable, and the protruding dimensions of the cutting blade that protrudes and retracts inside the main body to cut only the outer protective covering of the wire is adjustable. Therefore, it can be applied to wires of different sizes, shapes, and types by appropriately adjusting the outer diameter dimension of the covered wire and the thickness dimension of the outer protective coating, making it extremely versatile. Further, since the structure is simple, it is easy to operate, and the protective coating can be removed quickly and reliably. Moreover, it is small and lightweight, and can be provided at low cost.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional side view of an embodiment of the present invention, Fig. 2 is a front view thereof, Fig. 3 is an enlarged partially sectional side view showing the main parts thereof, and Fig. 4 explains its function. Fig. 5 is a plan view of the partial cross-sectional side view.
FIG. 6 is a partially sectional side view of another embodiment. 1... Main body, 6... Axis, 9... Covered electric wire, 1
7... Cutting blade, 18... External protective coating, 24...
Slit, L... protrusion dimension, L... clamping dimension.

Claims (1)

[Scope of utility model registration request] A main body 1 swings open and close around a pivot 6 as a fulcrum and holds a covered wire 9 in a pinched manner, and protrudes and retracts into the inside of the main body 1 through a slit 24 formed in the main body 1.
A tube cutter comprising a cutting blade 17 for cutting only the external protective coating 18 of the covered electric wire 9, and characterized in that the clamping dimension L of the main body 1 and the protruding dimension L of the cutting blade 17 are adjustable. Tar.