JPH0448798Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a flexible pipe (hereinafter referred to as "flexible pipe") that has a corrugated shape and is coated on the outside with anticorrosive material. This relates to a stripping tool.

[Prior art and its problems] Recently, flexible pipes have come into use for indoor gas piping. This flexible tube has an anti-corrosion coating on its surface, and when connecting the flexible tube to a socket etc., the coating becomes an obstruction and must be removed.

Conventionally, a well-known cutter knife is used as a general tool for this stripping, but using a cutter knife may scratch the surface of the flexible tube when stripping off the coating, and this scratch can be removed when a socket etc. is joined. There was a concern that gas might leak through the pipe.

Furthermore, when using a cutter knife, even though the cut ends should be on the same circumferential line when stripping off the coating, they would be cut in different places when going around once, causing cracks, which caused the inconvenience of having to touch up the cuts later.

From this point of view, a pliers-shaped tool 01 as shown in FIG. 5A has recently been known. A tool 01 has been proposed in which a cutter 02 is attached to the tip of the tool 01 as shown in FIG. Indoor piping is often done in narrow spaces, so this tool had problems with usability.

In addition, a cable core sheath stripper was proposed in Utility Model Application No. 48-57665, but when the diameter (thickness) of this stripper differs, the angle of the blade changes, resulting in poor cuts and difficulty in gripping. Because the part is configured to open elastically,
When stripping, it is necessary to grasp this grip and raise the blade, which has the disadvantage of being difficult to use.

[Purpose of the present invention] The purpose of the present invention is to develop a flexible tube that can be easily used even in narrow spaces without damaging the flexible tube, does not stand up, and can be used in common with tubes of different diameters. The purpose is to propose a pipe stripping tool.

[Structure and operation of the present invention] As a means for achieving the above object, the present invention proposes a stripping tool having the following structure.

It is one tip of a pair of levers that can be opened and closed about a support shaft, and a cutting blade is attached to the tip of the other lever so as to be opposite to the tip of the other lever. A receiving metal fitting having a V-shaped notch that rotates around an axis parallel to the direction of the cutting blade is attached, and a stopper is also attached within the lever so as to be slidable and adjustable in the direction of the cutting blade, and a spring is attached to the support shaft. A flexible pipe coating stripping tool that is attached and uses the force of this spring to always bias the cutting edge side of the lever in the closing direction.

[Operation] The above tool uses a stopper to determine the length of the coating to be stripped, opens the lever against the spring, and inserts the tip of the flexible tube into the lever until it hits the stopper.
Close the lever, apply force to the cutting blade with your hand from above the lever, rotate the tool to cut into the coating, then remove the tool and pull out the end of the coating to remove it. It ends.

[Embodiment] Figures 1 and 2 show an embodiment of the tool according to the present invention, in which 1a and 1b are a pair of levers rotatably (opening and closing) connected by a support shaft 3; Blocks 4a and 4b are attached to the tips 2a and 2b, respectively.

Reference numeral 5 denotes a cutting blade attached to the block 4a on the lever 1a side with a screw 6.
is opposite the block 4b on the other lever 1b side,
The cutting edge protrudes slightly outward from the concave surface 7 formed on the block 4a.

Reference numeral 8 denotes a receiving metal fitting rotatably attached to the block 4b on the other lever 1b side by a shaft 9 parallel to the cutting blade 5, and a V-shaped notch 10 is provided in the center of the receiving metal fitting 8. It is provided opposite to the cutting blade 5.

11 is a stopper located inside the levers 1a and 1b and attached to an L-shaped metal fitting 13 that can be freely moved in and out along a slit 12 provided on the lever 1b side, and a boss 14 is protruded from the center of this stopper 11. It has been done. 15 is a screw for fixing the L-shaped fitting 13 (stopper 11).

Reference numeral 16 denotes a spring installed between the levers 1a and 1b so as to close the levers 1a and 1b on the cutting blade 5 side.

Next, an example of the use of the above tool will be explained.

First, the stopper 11 is positioned.

This positioning is performed by sliding it along the slit 12, but a scale is written on the side of the slit 12 according to the length to be stripped (for example, the pitch), and the strip is aligned with this scale. Further, this scale is set so as to be made at the valley of the waveform on the flexible tube. However, in the case of a spiral flexible pipe, there are more than just valleys, so in this case, we do not care about the peaks and valleys.

After positioning the stopper 11, as shown in Fig. 3, insert the flexible tube a until the tip touches the stopper 11, and move the tool side 2 in any direction while applying force to the levers 1a and 1b. Rotate.

When rotated in this manner, the cutting blade 5 cuts into the coating b of the flexible tube a, and the coating b is cut.

The cut end of the covering b can be easily pulled out by hand. FIG. 4 shows the flexible tube in the pulled out state.

Note that when using a tool for flexible pipes with different diameters, it may be difficult to orient the cutting blade 5 at right angles to the flexible pipe depending on the diameter; It follows the diameter and makes the relationship with the cutting edge 5 at right angles.

[Effects of the present invention] The present invention has the above-described configuration and operation, and has the following effects.

a. The coating is cut by rotating the flexible tube between the cutting blade attached to the tip of the lever and the receiving metal fitting, so the cut is on a single circumferential line, giving a clean cut and no cracking.

b. The tool can be made small, so it can be used easily even in confined spaces.

c. Since the receiving metal fitting is attached and rotated, it can be used for flexible pipes of different diameters, and the cutting edge does not tilt, so the cutting quality does not deteriorate.

d) Since a stopper is attached, the stripping position is determined simply by inserting the flexible pipe until it hits the stopper, and there is no problem of excessive or insufficient stripping amount.

[Brief explanation of the drawing]

Fig. 1 is a side view of the tool according to the present invention, Fig. 2 is a front view, Fig. 3 is a usage state diagram, Fig. 4 is a side view of a flexible tube with an end treated, and Fig. 5 is a diagram of a conventional tool. It is an explanatory diagram. 1a, 1b...lever, 3...support shaft, 5...cutting blade, 8...receiving metal fitting, 11...stopper.

Claims (1)

[Scope of utility model registration request] It is one tip of a pair of levers that can be opened and closed about a support shaft, and a cutting blade is attached to the tip of the other lever so as to be opposite to the tip of the other lever. A receiving metal fitting having a V-shaped notch that rotates around an axis parallel to the direction of the cutting blade is attached, and a stopper is also attached within the lever so as to be slidable and adjustable in the direction of the cutting blade, and a spring is attached to the support shaft. A flexible pipe coating stripping tool that is attached and uses the force of this spring to always bias the cutting edge side of the lever in the closing direction.