JPS5818409Y2 - Cutter for corrugated steel pipes in metal-instrumented cables - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a simple cutter for corrugated coated steel pipes in metal-clad cables.

Conventionally, in order to peel off the corrugated steel pipe and the outer coating of this type of metal-clad cable to expose the bundle of conductors stored and protected inside, the corrugated steel pipe was removed using a scissor, a scroll saw, etc. After the incision was made, the conductive bundle was separated from the closed end, so stripping off the corrugated coated steel pipe to expose the conductive bundle was time-consuming and required skill, and there was a risk of injury to hands etc. during the stripping process. was there.

In this case, the present invention allows even an unskilled person to easily cut the corrugated steel pipe of a metal-clad cable to a desired length to expose the conductor, thereby quickly and reliably cutting the waveform. To provide a cutter for a corrugated coated steel pipe in a metal sheathed cable, which can cut the type coated steel pipe, has a simple structure, and can perform the work safely.

The present invention will be explained below with reference to the drawings. 1 is a cutter body made of corrugated coated steel pipe, and a fulcrum arm 2 serves as a fulcrum during incision.
and a holding part 3.

A recess 4 is formed at the tip of the fulcrum arm 2 and has a shape that approximately matches the outer surface shape of the top of the corrugated coated steel pipe.

A groove 5 is formed in the axial direction at the bottom of the holding part 3.
A bolt insertion hole 6 is formed in the side surface.

The incision blade 7 is separated from the blade part 8 and the attachment part 9, and the distal end of the blade part 8 is provided with a retaining stopper part 8a for incision, and the attachment part 9 is formed with an attachment hole 9a.

The incision blade 7 faces the cutter body 1 with its blade 8 facing the fulcrum arm 2 and in a state substantially parallel to the fulcrum arm 2.
It is fixed by a bolt 10 and a nut 10a via a bolt 9a.

Since the bolt insertion hole 6 is formed into a long hole, the cutting blade 7
The distance between the recess 4 of the fulcrum arm 2 and the blade part 8 can be adjusted by changing the attachment device of the fulcrum arm 2, and the optimum cutting state can be achieved according to the size of the metal-insulated cable.

Note that 11 is a grip placed on the holding portion 3, and 12 is a metal-inserted cable composed of a corrugated coated steel pipe 13 and a cable 14.

Next, to explain the cutting procedure, first, a hole into which the cutting blade 7 is inserted is made using a jig saw or the like at the top of the corrugated coated steel pipe 13 where the cable end of the metal-insulated cable is left at the desired length. The cutting blade 7 is inserted into the opening while placing the recess 4 of the fulcrum arm 2 on the top of the coated steel pipe.

By lifting the holding part 3 upward in this state, the blade part 8 cuts the corrugated coated steel pipe 13 in such a way that it always spreads upward.

At this time, the retaining stopper portion 8a prevents the cutting blade 7 from coming out of the corrugated coated steel pipe during cutting, thereby contributing to smooth cutting work.

After making the incision to the desired length, cut off the starting point of the incision using scissors or the like, and if necessary, chamfer it with a file or the like.

Since the present invention is constructed as described above, the cutting operation can be performed with a relatively weak force using the lever principle, and the recess of the support arm is aligned with the cutting blade along the top of the corrugated coated steel pipe. The incision marks are formed in a relatively orderly manner, and the top of the corrugated steel pipe is always incised in such a way that it spreads upwards, making it easy to process the ends. Since a portion of the retaining stopper is provided, the retaining stopper partially locks onto the terminal edge of the cut portion of the corrugated coated steel pipe during the cutting operation, preventing the blade from coming off outward. It has the features of being easy to continue working, easy to use even by unskilled people, and enabling quick and reliable cutting work.

[Brief explanation of drawings]

FIG. 1 is a side view of the cutter according to the present invention, FIG. 2 is a front view, FIG. 3 is a perspective view, and FIG. 4 is a perspective view of the cutting blade. 1... Cutter main body, 2... Fulcrum arm,
3... Holding part, 4... Recess, 7...
...Incision blade, 8...Blade part.

Claims (1)

[Scope of utility model registration request] A cutter main body is provided with a fulcrum arm and a holding part, and a recess that approximately corresponds to the top of the corrugated coated steel pipe is formed at the tip of the fulcrum arm, and there is a gap between the fulcrum arm and the cutter main body. A cutter for a corrugated coated steel pipe, characterized in that a cutter is provided with a cutting blade having a blade portion directed toward the fulcrum arm, and a portion of a retaining stopper is provided at the tip of the blade portion for cutting.