JP2001347417A - Cable cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable cutter capable of sharply cutting a cable without crushing the cable and generating no chip. SOLUTION: This cable cutter 1 for cutting the cable having a corrugated welding metallic sheath on the outer periphery, is provided with a cutter body 4 having a cable support base 9 adjusted to a corrugated shape of the corrugated welding metallic sheath for surrounding the cable in an annular shape by sandwiching the cable from above and below and rotatable to the cable, a cutting blade 5 slidingly arranged in the cutter body 4 and a pushing-in screw 6 arranged in the cutter body 4 and sending out the cutting blade 5 in the axial direction of the cable according to rotary cutting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable cutter for cutting a cable having a corrugated welded metal sheath on the outer periphery.

[0002]

2. Description of the Related Art Generally, when cutting a cable such as a coaxial cable, a slicing saw is used.

[0003] Saw saws can be cut with any kind of cable, and a simple cut can sufficiently achieve the purpose.

[0004]

However, in the case of the sawing saw, it is not possible to cut the cut surface of the cable vertically and neatly, so that chips are generated and cleaning work must be performed. There are drawbacks.

There are pipe cutters, electric cutters, manual cutters and the like as alternatives to the slicing saw, but none of them can satisfactorily cut the cable.

[0006] The pipe cutter is used to cut a pipe such as a water pipe, so that the cable has poor sharpness and has a drawback such as crushing the cable. The electric cutter and the manual cutter have a disadvantage that the cable is crushed because the cutter is sandwiched and cut like scissors.

Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide a cable cutter which can cleanly cut a cable without crushing the cable and does not generate chips.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a cable cutter for cutting a cable having a corrugated welded metal sheath on its outer periphery. A cutter body having a cable support base adapted to the corrugated shape of the corrugated welded metal sheath and rotatable with respect to the cable,
The cutter body is provided with a cutting blade slidably provided on the cutter body, and a push screw provided on the cutter body and sending out the cutting blade in the axial direction of the cable along with the rotational cutting.

The cable support has a groove engaged with the outer peripheral ring of the corrugated welded metal sheath over a plurality of pitches, and holds the cable so as not to move in the axial direction. It is preferable to rotate together with the cutter body.

[0010] The cutting blade may be provided on the cutter body so that the cutting blade is positioned at the top of the outer peripheral ring of the corrugated welded metal sheath and cut at a position where the cable supporter holds the cable. .

The cable support is preferably detachable from the cutter body to hold a plurality of types of cables.

Further, the cutting blade has a thickness of 0.5
It is preferable that both edges are formed on a metal plate of about 0.8 mm.

The screw pitch of the pushing screw is preferably 1 mm.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 2 and 3, a cable cutter 1 is for cutting a coaxial cable 3 having a corrugated welded metal sheath 2 on the outer periphery.
A cutting blade 5 slidably provided on the cutter body 4, and a pushing screw 6 provided on the cutter body 4 for feeding the cutting blade 5.

The corrugated welded metal sheath 2 is a metal sheath formed by forming a thin metal tape of iron, copper, aluminum, stainless steel or the like around the cable, welding the seams continuously, and then corrugating. There is an outer peripheral ring 25 bulging radially outward on the outer periphery at equal intervals in the axial direction.

As shown in FIG. 1, the cutter body 4 is formed in a substantially rectangular frame shape with metal, and has an upper body 7 that slidably supports the cutting blade 5 and a connecting pin 31 connected to the upper body 7. And a lower main body 8 provided to be freely opened and closed.

The upper main body 7 and the lower main body 8 are provided with a cable support 9 for surrounding the coaxial cable 3 from above and below in a ring shape.

The cable support 9 comprises an upper support 10 provided on the upper body 7 side and a lower support 11 provided on the lower body 8 side. The cable support 9 is made of polyacetal from the viewpoint of handleability and life. I have.

The upper support 10 and the lower support 11 are respectively depressed and formed in a semi-cylindrical shape so as to receive the coaxial cable 3 sandwiched between the upper main body 7 and the lower main body 8. When the lower body 8 is closed, the lower body 8 is abutted so as to annularly surround the outer periphery of the coaxial cable 3.

As shown in FIG. 4, the cable support 9 is
The corrugated welded metal sheath 2 is formed to have a length surrounding the outer peripheral ring 25 over four pitches.

The inner peripheral surface 12 of the cable support base 9 is formed in accordance with the corrugated shape of the corrugated welded metal sheath 2, and the grooves 3 respectively engaging with four pitches of the outer ring 25.
Has zero. Thus, the coaxial cable 3 is rotatable together with the cutter body 4 at that position while holding the coaxial cable 3 so as not to move in the axial direction.

The cable support 9 is provided so as to be detachable from the cutter body 4, and is capable of holding a plurality of types of cables (not shown) by exchanging the cable support 9.

As shown in FIGS. 1, 2 and 3, the cutter main body 4 has a main body fixing means 13 for closing and fixing the upper main body 7 and the lower main body 8.

The main body fixing means 13 is rotatably connected to the vicinity of the open / close end of the upper main body 7 via a rotatable pin 14, and is connected to a connecting rod 16 having a male screw 15 cut at the distal end and a lower main body 8. It comprises a receiving groove 17 formed to fit the base end side of the connecting rod 16 and a wing nut 18 screwed to the distal end of the connecting rod 16 to restrict the rotation of the lower body 8.

The cutting blade 5 has a thickness of 0.5 to 0.8.
A double-sided blade made of a superalloy is formed on a metal plate having a thickness of 2 mm, and is provided on the upper body 7 via a holder 19.

The cutting edge of the cutting blade 5 is polished in two steps, so that the coaxial cable 3 can be cut smoothly by reducing the frictional resistance with the cut surface when cutting the coaxial cable 3.

As shown in FIG. 1 and FIG.
The base 2 is slidably supported by the upper body 7.
0 and an attachment plate 21 for attaching the cutting blade 5 to the base portion 20.

The base portion 20 is formed of a substantially rectangular thick plate as viewed from the front, and is supported on the upper body 7 on both left and right sides so as to be slidable in the vertical direction. A semicircular cutout 22 for releasing the coaxial cable 3 being cut is formed at the center of the lower end of the base portion 20, and is held by the cable support 9 even when the holder 19 is slid up and down. The coaxial cable 3 is not hit.

The base 20 has an extension 23 extending rearward from the vicinity of the upper end so as to engage a push screw 6 described later.

The mounting plate 21 is for mounting the cutting blade 5 with the cutting blade 5 being sandwiched between the mounting plate 21 and the base 20, and is formed in a substantially rectangular shape in plan view. A semi-circular cutout 24 is formed in the center of the lower end of the mounting plate 21 to release the coaxial cable 3 being cut, like the base portion 20.

The mounting plate 21, the cutting blade 5, and the base portion 20 are mounted such that their lower ends are aligned with each other. Notch 22,2
4 to be exposed.

Then, the cutting blade 5 is provided on the cutter body 4 so as to be cut at the position where the cable support 9 holds the coaxial cable 3 at the top 26 of the outer peripheral ring 25 of the corrugated welded metal sheath 2. Have been.

As shown in FIG. 4, the pushing screw 6 is screwed into the upper part of the upper body 7 in a vertically extending manner. A lower end portion 27 of the push screw 6 is rotatably inserted into the extension portion 23 of the base portion 20, and a lower end protruding from the extension portion 23 is provided with a ring 28 for retaining the same.

A knob 29 is provided on the upper end of the push screw 6.
Is formed, and the cutting blade 5 is slid vertically by rotating the knob 29.

The push screw 6 is formed with a screw pitch of 1 mm so that workability at the time of cutting is good.

Next, the operation will be described.

When cutting the coaxial cable 3, as shown in FIG. 1, the cutting blade 5 is pulled up and the cutter body 4 is kept open.

Then, the cutter body 4 is closed so that the coaxial cable 3 is sandwiched between the upper body 7 and the lower body 8.

The coaxial cable 3 is held by the cable support 9 so as to be annularly surrounded by the upper support 10 and the lower support 11. At this time, the upper support base 10 and the lower support base 11 are, as shown in FIG.
Are surrounded by four pitches, and each outer ring 25 is accommodated in the groove 30 and engaged with the outer periphery of the corrugated welded metal sheath 2.

The connecting rod 16 is rotated toward the lower body 8, and the base end is inserted into the receiving groove 17. Then, by tightening the wing nut 18, the rotation of the lower support 11 is restricted, and the cutter body 4 is fixed in a closed state as shown in FIGS.

In this state, the axial movement of the cable cutter 1 is restricted by accommodating the outer peripheral ring 25 of the corrugated welded metal sheath 2 in the groove 30, and only the rotation around the axis is allowed. .

When the push screw 6 is lowered by turning the knob 29, the push screw 6 pushes the extension 23 downward while rotating within the extension 23.

When the cutting blade 5 is moved toward the coaxial cable 3 in this manner, the cutting edge of the cutting blade 5 comes into contact with the top 26 of the outer peripheral ring 25. Since the screw pitch of the push screw 6 is formed to be 1 mm, the cutting blade 5 can be rotated only by twisting the knob 29 several times.
5 is contacted.

When the cable cutter 1 is reciprocated about the axis of the coaxial cable 3, the cutting edge of the cutting blade 5 moves annularly while cutting into the corrugated welded metal sheath 2, and an annular cut is easily made in the coaxial cable 3. You can enter.

At this time, the cutting blade 5 is set at 0.5 to
Since it is formed to a thickness of 0.8 mm, it can be easily cut with a small force, and there is no fear of cracking. In addition, since the two blades are formed in opposite cross-sectional shapes, the coaxial cable 3 can be cut straight so as to be orthogonal to the axis of the coaxial cable 3.

Since the coaxial cable 3 is received over a wide area while being wrapped by a curved surface by the cable support 9, the coaxial cable 3 can be prevented from being crushed by the pressure of the cutting blade 5, and the cross-sectional shape of the coaxial cable 3 can be maintained. Can be cut while standing.

Since the cable support 9 is made of polyacetal, the friction between the cable support 9 and the corrugated weld metal sheath 2 is relatively small, and the cable support 9 smoothly turns around the outer periphery of the coaxial cable 3.

When the resistance when turning the cable cutter 1 becomes weak, the knob 29 is further turned to move the cutting blade 5 in the axial direction of the coaxial cable 3 and the operation of turning the cable cutter 1 is repeated.

The cutting edge of the cutting blade 5 is coaxial cable 3
Is reached, the coaxial cable 3 is completely cut.

The cutter body 4 can be opened again by loosening the wing nut 18 and rotating the connecting rod 16 out of the receiving groove 17.

When another type of cable (not shown) such as a cable having a different diameter or a pitch of the outer peripheral ring 25 of the corrugated welded metal sheath 2 is cut, the cable support 9 may be replaced. it can.

As described above, the cutter body 4 having the cable support base 9 conforming to the corrugated shape of the corrugated welded metal sheath 2 and being rotatable with respect to the coaxial cable 3 is provided slidably on the cutter body 4. Cutting blade 5
And a push screw 6 provided on the cutter body 4 to feed the cutting blade 5 in the axial direction of the coaxial cable 3 with the rotation cutting, so that the cable cutter 1 is configured.
The cut can be cut perpendicularly to the axis of the coaxial cable 3 and into a clean cut surface without generating chips. And since it is a simple structure, it can be easily formed compact and can be used for field work.

In particular, since the coaxial cable 3 can be cut into a clean cut surface, when two waves having different frequencies are sent,
IM (Inter Modula)
tion) = Intermodulation distortion can be reduced as shown in Table 1.

[0055]

[Table 1]

The cable support 9 has a groove 30 that engages with the outer peripheral ring 25 of the corrugated welded metal sheath 2 over a plurality of pitches, and holds the coaxial cable 3 so as not to move in the axial direction. While rotating at this position together with the cutter body 4, the cable cutter 1
Can be easily restricted in the axial direction, and the coaxial cable 3 can be stably cut at a predetermined position.

The cutting blade 5 is provided on the cutter body 4 so as to be cut at the position where the cable support 9 holds the coaxial cable 3 and at the top 26 of the outer peripheral ring 25 of the corrugated welded metal sheath 2. The outer ring 2
The coaxial cable 3 can be cut at the top 26 of the cable 5. By cutting the coaxial cable 3 at the top 26 of the outer peripheral ring 25, it is possible to facilitate later cable termination processing.

Since the cable support 9 can be attached to and detached from the cutter body 4, it is possible to easily handle a plurality of types of cables (not shown).

Since the screw pitch of the pushing screw 6 is 1 mm, the knob 29 can be turned with a small force when the cutting blade 5 is cut into the coaxial cable 3, and
The number of times the knob 29 is rotated can be appropriately suppressed, and the work can be performed satisfactorily.

In this embodiment, the coaxial cable 3 having the corrugated welded metal sheath 2 has been described. However, the present invention is not limited to this, and any other cable having the corrugated welded metal sheath 2 can be used. You may.

[0061]

In summary, according to the present invention, the following excellent effects can be obtained.

(1) The cable can be cut cleanly without crushing it.

(2) Cutting can be performed without generating chips.

[Brief description of the drawings]

FIG. 1 is a front view of a cable cutter showing a preferred embodiment of the present invention.

FIG. 2 is a front view of the cable cutter attached to a cable.

FIG. 3 is a view taken along line III-III in FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cable cutter 2 Corrugated welding metal sheath 3 Coaxial cable 4 Cutter body 5 Cutting blade 6 Push screw 9 Cable support 25 Outer ring 26 Top 30 Groove

Claims (6)

[Claims] 1. A cable cutter for cutting a cable having a corrugated welded metal sheath on its outer periphery, wherein the cable support conforms to the corrugated shape of the corrugated welded metal sheath so as to sandwich the cable from above and below in a ring shape. A cutter body having a base and rotatable with respect to the cable, a cutting blade slidably provided on the cutter body, and a shaft of the cable provided on the cutter body, the cutting blade being provided with a rotary cutting. A cable cutter comprising a push screw for feeding in a center direction. 2. The cable support base has a groove that engages with the outer peripheral ring of the corrugated welded metal sheath over a plurality of pitches, and holds the cable so as not to move in the axial direction. The cable cutter according to claim 1, wherein the cable cutter rotates together with the cutter body. 3. The cutter body according to claim 2, wherein the cutting blade is provided at a position where the cable supporting base holds the cable and is positioned at the top of the outer peripheral ring of the corrugated welded metal sheath so as to cut. Cable cutter. 4. The cable cutter according to claim 1, wherein the cable support is detachable from the cutter body to hold a plurality of types of cables. 5. The cutting blade having a thickness of 0.5 to 0.5.
The double blade is formed on a 0.8 mm metal plate.
Cable cutter according to any of the above. 6. The cable cutter according to claim 1, wherein a screw pitch of the pushing screw is 1 mm.