JP2016010207A - Outer coating remover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outer coating remover that can easily and surely take out a tear cord by a simple operation without any skill.SOLUTION: A turning shaft 10 is provided at substantially the center position of a main body portion 2 formed in a substantially prismatic shape. A handle portion 4 is secured turnably by the turning shaft 10. A reception groove 2a capable of receiving the side surface of a coated cable and an opposite groove 4a confronting the reception groove 2a are formed in the neighborhood of the turning shaft 10 on the main body portion 2 and the handle portion 4, respectively. The reception groove 2a and the opposite groove 4a are opened outwards, and an internal blade 6 in the reception groove and an internal blade 8 in the opposite groove are disposed in these openings. The blade edges of the internal blade 6 in the reception groove and the internal blade 8 in the opposite groove are disposed at substantially the same position as the embedded depth of a tear cord on the inner walls of the reception groove 2a and the opposite groove 4a.

Description

  The present invention relates to a jacket removal tool that can easily expose a tear string without damaging a core wire of a covered cable in which the tear string is embedded.

  2. Description of the Related Art A covered cable in which a tear string is embedded inside an outer jacket is known. In this covered cable, a portion of the tear cord is exposed by scraping off a portion of the jacket, and the outer sheath can be torn and removed vertically by pulling out the exposed tear cord. A cross-sectional view of a coated cable having such a tear string is shown in FIG.

  In this covered cable 50, two sets of tear strings 52 and 53 are embedded in the jacket 51. In addition, two ridges 56 projecting in the radial direction and extending in the longitudinal direction are formed at the counter electrode position so that the embedded positions of the tear strings 52 and 53 can be seen from the outside. Of the two sets, one tear string 52 is disposed at a position in contact with the core portion 57 that includes the optical fiber 50 a that is a cable core, and the other tear string 53 is disposed within the protrusion 56. ing. Accordingly, when the outer jacket 51 is peeled off with the protrusion 56 as a mark, the tear string 52 can be pulled out following the tear string 53. Such a coated cable 50 is described in Patent Document 1.

  On the other hand, as described above, a hand-held tool for exposing a tear string embedded in a covered cable is also known.

  FIG. 11 shows a cable jacket remover 100 as an example of such a hand-held tool. The cable jacket remover 100 is provided with a plate-shaped peeling blade 101. The operator grasps the grip 104 with one hand, applies the peeling blade 101 to the jacket 51 of the coated cable 50 as shown in FIG. 10, and slides on the jacket 51 in the longitudinal direction, thereby causing the fruit. The outer jacket 51 can be shaved so as to peel the skin.

  Since the cable jacket remover 100 is provided with the cable holding portion 103 for hooking and holding the covered cable 50, the distance between the cable jacket remover 100 and the covered cable 50 is made substantially constant. It can be kept and work stably. Further, after the tear string 53 (or 52) is exposed, a part of the tear strings 52, 53 can be hooked on the string hook portion 102 and pulled out.

  When such a hand-held tool is used, damage to the core portion 57 can be prevented, unlike the case where the cutting edge of a cutter or knife is pushed into the outer jacket 51 and cut. The cable jacket remover 100 in FIG. 11 is described in Patent Document 2.

JP 2009-198701 A JP 2002-64916 A

In the above-described covered cable 50, since the outer jacket 51 is generally formed of a relatively soft resin material such as polyethylene or polyvinyl chloride, it is similar to the cable jacket remover 100 shown in FIG. It is possible to cut with a manual instrument. However, since the resistance received from the resin material to the cutting edge varies greatly depending on the depth of cutting, skill is required to accurately grasp the fixed depth in which the tear string is embedded.

  In addition, in order to reduce the cutting resistance and perform the work stably, when scraping the outer jacket 51 in a plurality of times, it becomes difficult to grasp the thickness of the removed covering material. There is a risk of damaging the cable core.

  Furthermore, when cutting in multiple times, after the protrusions 56 provided on the outer surface of the jacket 51 are removed, it is difficult to understand the exact position where the tear strings 52 and 53 are embedded.

  Therefore, an object of the present invention is to provide a jacket removal tool that can easily and reliably take out a tear string with a simple operation without requiring skill.

  In order to achieve the above object, the jacket removal tool of the present invention is a jacket cable jacket removal tool in which a tear string is embedded in the jacket, and can accommodate a part of the side surface of the jacket cable An opposing groove is formed at a position facing the housing groove so that it can accommodate the main body part with a separate housing groove and a part of the covered cable and the other part of the counter electrode, and is rotatable with respect to the main body part And at least one of the receiving groove and the opposing groove, and an internal blade provided so that the distance from the groove bottom to the blade edge is substantially the same as the embedment depth of the tear string. It is characterized by that.

  In addition to the above configuration, the jacket removal tool of the present invention is characterized in that the inner blade is provided in the housing groove and the opposing groove.

  Further, in addition to the above-described configuration, the jacket removal tool of the present invention is configured so that the internal blade provided in the housing groove and the internal blade provided in the opposing groove are close to each other. And it is inclinedly arranged so that each blade edge may be directed in the same direction with respect to the extending direction of the receiving groove and the opposing groove.

  As described above, according to the present invention, in a state in which the covered cable is sandwiched between the housing groove and the opposed groove, the force that causes the handle portion to rotate with respect to the main body portion around the rotating shaft and sandwich the covered cable. Is increased, the internal blade provided in at least one of the receiving groove and the opposing groove is cut into the jacket of the covered cable. Thus, the distance between the cut edge of the internal blade and the groove bottom of the receiving groove or the opposing groove provided with the internal blade is set to be substantially the same as the embedded depth of the tear string. Therefore, the cutting edge of the internal blade cut into the covered cable bottomed on the groove bottom of the receiving groove or the opposing groove reaches the embedded depth of the tear string, and the tear string can be pulled out. It becomes possible.

  Further, according to the present invention, when the internal blade is provided in the housing groove and the opposing groove, in addition to the above effect, the rotating shaft is centered in the state where the covered cable is sandwiched between the housing groove and the opposing groove. If the handle portion is rotated with respect to the main body portion to increase the force sandwiching the coated cable, the inner blade of the receiving groove provided in the receiving groove and the inner setting of the opposing groove provided in the opposing groove The blade is simultaneously cut into the jacket from the position of the counter electrode. As a result, since the outer jacket at the counter electrode position is cut to the embedded depth of the tear string, it is possible to simultaneously expose the tear string to the covered cable in which the tear string is embedded at the counter electrode position. Become.

Further, according to the present invention, in addition to the above effects, the outer cover is removed in the direction toward the cutting edge of the internal blade provided in each groove with respect to the covered cable sandwiched between the housing groove and the opposing groove. When the tool is slid, the two internal blades are arranged in a square shape so that the blade edges come close to each other, so that the respective blade edges can be easily cut into the jacket. As a result, it is possible to peel off the jacket at the counter electrode to the same thickness as the embedment depth of the tear string only by sliding the jacket removing tool in the longitudinal direction of the covered cable.

It is a whole perspective view of the jacket removal tool concerning an embodiment of the invention. It is the top view which looked at the jacket removal tool of Drawing 1 in the closed state from the installation side of a handle part. It is the side view which looked at the jacket removal tool of Drawing 1 in the closed state from the direction where a storage slot extends. It is the expanded sectional view which expanded the cross section cut | disconnected by the AA line of FIG. It is the perspective view which showed a mode that a cable was cut in the use condition of the jacket removal tool of FIG. 1 shows the cutting operation of the jacket removal tool of FIG. 1, (a) is an open state before cutting, (b) is a state in which each of the receiving groove internal blade and the opposing groove internal blade is in contact with the cable; ) Is a diagram showing a closed state after cutting. It is sectional drawing of the covering cable which shows the embedment depth of a tear string. It is the side view which showed the movement of the opposing groove | channel inner blade at the time of a cutting | disconnection. It is the figure which showed the movement of the opposing groove | channel inner blade on the cable at the time of a cutting | disconnection. It is sectional drawing of the optical fiber cable provided with the conventional tear string. It is a general view which shows the conventional cable jacket remover.

  Hereinafter, a jacket removing tool according to an embodiment of the present invention will be described with reference to the drawings. Note that the covered cable 50 shown in FIG. 10 is referred to as appropriate for the cable to be peeled off. However, for convenience of explanation, the coated cable 50 shown in the drawings other than FIG. 10 shows an example in which only the inner tear string 52 is provided, and the optical fiber 50a in the core portion 57 is The illustration is omitted.

  First, the structure of the jacket removal tool according to the embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing the entire jacket removing tool 1. FIG. 2 is a plan view of the jacket removal tool 1 shown in FIG. 1 as viewed from the side where a handle portion 4 described later is attached. FIG. 3 is a side view of the jacket removal tool 1 as seen from the direction in which a housing groove 2a described later extends. FIG. 4 is an enlarged cross-sectional view in which the jacket removing tool 1 in FIG. 3 is cut along the line AA and the cross section thereof is enlarged.

  Referring to FIG. 1, the body portion 2 of the jacket removal tool 1 is formed in a substantially prismatic shape. As shown in FIG. 2, a rotation shaft 10 is provided at a substantially central position in the longitudinal direction of the main body 2. A handle portion 4 is pivotally supported on the main body 2 by the pivot shaft 10 so as to be pivotable. FIG. 1 shows a state where the handle portion 4 is separated from the main body portion 2 and is opened to the extent that the covered cable 50 can be accommodated.

  Next, referring to FIG. 3, a groove is formed in the vicinity of the rotation shaft 10 for both the main body 2 and the handle 4. Among these, the groove formed on the main body 2 side is the housing groove 2a, and is a recess extending in parallel to the rotating shaft 10 so as to accommodate a part of the side surface of the coated cable 50 (lower part in FIG. 3). It is formed with a groove. On the other hand, the groove formed on the handle portion 4 side is a facing groove 4a formed at a position facing the housing groove 2a. Similarly to the housing groove 2a, the facing groove 4a is also formed as a concave groove parallel to the rotary shaft 10 so that the other part (upper part in FIG. 3) of the side surface of the covered cable 50 can be housed. In the completely closed state, the side edges of the facing groove 4a and the housing groove 2a are joined together to form a substantially cylindrical guide hole.

  Next, FIG. 4 showing a cross section of the outer jacket removal tool 1 taken along line AA in FIG. 3 will be referred to. The main body 2 and the handle 4 have openings 2b and 4b penetrating between the inside and outside of the housing groove 2a and the opposing groove 4a, with the side on which the housing groove 2a and the opposing groove 4a are formed as the inside. Is formed. In these openings 2b and 4b, inclined surfaces 2c and 4c are formed, and blades for cutting the jacket 51 of the covered cable 50 are arranged along these inclined surfaces 2c and 4c. In the present embodiment, the blade provided so as to allow the cutting edge 6a to enter the receiving groove 2a is referred to as a receiving groove-installed blade 6, and provided so as to allow the cutting edge 8a to enter the opposing groove 4a. The blade that is present is referred to as an opposing groove inner blade 8.

  In the present embodiment, the inclined surfaces 2c and 4c are each set to have an inclination angle of about 20 degrees with respect to the direction in which the rotation shaft 10 extends. The inclination angle is 20 degrees as a basic setting angle, and is preferably set in a range of 10 to 45 degrees.

  With such a configuration, the covered cable 50 is disposed so as to be sandwiched between the housing groove 2a and the opposing groove 4a, and the force is applied to press the handle portion 4 toward the main body portion 2 side, while in the longitudinal direction of the covered cable 50. When the outer cover removing tool 1 is slid toward the outer surface, the outer cover 51 at the counter electrode position can be removed so as to scrape with a plane. At this time, a part of the outer jacket 51 cut by the receiving groove inner blade 6 and the opposed groove inner blade 8 is discharged from the openings 2b and 4b, respectively. This is shown in FIG.

  FIG. 5 shows a usage state of the jacket removing tool 1 of FIG. 1 and shows a state when the coated cable 50 is cut. FIG. 5 shows a state where the handle portion 4 is completely closed with respect to the main body portion 2 and the operation for exposing the tear string 52 is completed. In addition, the cross-sectional shape of the covered cable 50 is enlarged to such an extent that the configuration can be recognized, and is separately shown in a portion surrounded by a two-dot chain line.

  As can be seen from FIG. 5, when the outer casing 51 at the counter electrode position on the side surface is peeled off by the outer jacket removing tool 1 according to the present embodiment, the two tear strings 52 embedded in the counter electrode position are exposed simultaneously. . Then, after cutting the outer sheath 51 at the counter electrode in this way, the outer sheath 51 protruding from the opening 4b and the opening 2b (not shown) on the back surface side is cut near the root, and then the covered cable 50 and the outer sheath removing tool 1 can be easily separated.

  Next, the operation at the time of cutting will be described with reference to FIG. 6A and 6B show the cutting operation of the jacket removing tool 1 of FIG. 1, in which FIG. 6A is an open state before cutting, and FIG. Each of the blades 8 is in contact with each other, and (c) shows a closed state (work completion state) after cutting.

  First, as illustrated in FIG. 6A, the covered cable 50 is disposed so that a part of the side surface is accommodated in the accommodation groove 2 a of the main body 2. At this time, it arrange | positions so that one side of the protrusion 56 which shows the direction where the tear string 52 is embed | buried may contact | abut to the accommodation groove | channel inner blade 6. As shown in FIG.

  Then, when the handle portion 4 is closed in this state, as shown in FIG. 6B, the other part of the side surface of the covered cable 50 is accommodated in the opposing groove 4a of the handle portion 4, and the opposing groove is provided. The blade 8 comes into contact with the side surface of the covered cable 50. Then, when the jacket removing tool 1 is slid along the axial direction of the covered cable 50 while applying a force so as to close between the handle portion 4 and one end side of the main body portion 2, The opposing groove inner blade 8 is cut into the outer jacket 51. When the receiving groove inner blade 6 and the opposing groove inner blade 8 are sufficiently cut into the outer jacket 51 and the handle portion 4 is completely closed with respect to the main body portion 2, the state shown in FIG. Become.

Returning to FIG. 4, in the jacket removal tool 1 according to the present embodiment, the gap D <b> 1 between the cutting edge 6 a of the receiving groove inner blade 6 and the groove bottom 2 d of the receiving groove 2 a is embedded in the outer cover 51. It is set to be substantially the same distance as the embedding depth D3 of the tear string 52 (see FIG. 5). Similarly, the gap D2 between the cutting edge 8a of the opposed groove inner blade 8 and the groove bottom 4d of the opposed groove 4a is set to be substantially the same distance as the embedded depth D4 of the tear string 52.

  Here, the embedding depths D3 and D4 will be described with reference to FIG. FIG. 7 shows an enlarged cross section of the covered cable 50. FIG. 7 schematically shows the position of the tear string 52 in the covered cable 50, and does not represent the actual dimensional relationship. As shown in FIG. 7, the above-mentioned embedment depths D3 and D4 refer to the depth to the portion located on the outermost diameter side in the radial direction of the covered cable 50 in the torn string 52 that is buried. In the present embodiment, since the tear string 52 and the protrusion 56 are arranged in the radial direction of the covered cable 50, the embedded depths D <b> 3 and D <b> 4 respectively correspond to the outermost projecting surface of the protrusion 56 and the tear string 52. It is the distance between the most outer diameter side portions of the.

  For this reason, when the handle portion 4 is completely closed as shown in FIG. 6C, the inner walls of the housing groove 2a and the opposing groove 4a and the outer cover 51 of the covered cable 50 or the protruding surface of the protrusion 56 are in contact with each other. Since it is in the contact state, the cutting edges 6 a and 8 a have reached the position on the outer diameter side of the tear string 52 accurately. That is, the accommodation groove inner blade 6 and the opposing groove inner blade 8 are cut to such an extent that the side surface of the tear string 52 appears slightly, and is not cut beyond the embedded depth of the tear string 52. The tear string 52 can be reliably exposed, and the occurrence of damage to the core portion 57 can be prevented.

  In the present embodiment, the groove bottoms 2d and 4d with respect to the housing groove 2a and the opposing groove 4a do not indicate the lower part of the groove, but indicate the deepest position of the groove. Therefore, in FIG. 4, the groove bottom 2d is the lowermost position of the receiving groove 2a, while the groove bottom 4d corresponds to the uppermost position of the opposing groove 4a.

  As described above, according to the jacket removing tool 1 according to the present embodiment, the covered cable 50 is sandwiched between the housing groove 2a and the opposing groove 4a of the main body portion 2 and the handle portion 4, and the handle portion 4 is inserted into the main body portion 2. By simply sliding in the longitudinal direction of the covered cable 50 while closing to the side, the tear string 52 embedded in the counter electrode position can be exposed at the same time, so it is possible to easily perform accurate processing without requiring skill. It is. Further, the tear string 52 can be reliably exposed only by sliding the receiving groove inner blade 6 and the opposing groove inner blade 8 once with respect to the outer jacket 51. Compared with reliable and detailed work, work efficiency is significantly improved.

  By the way, since the protrusions 56 are formed on the jacket 51 of the covered cable 50, the embedded position of the tear string 52 can be easily confirmed, but at the position of the cutting edges 6a and 8a during the cutting operation. On the other hand, when the covered cable 50 is not properly disposed, the tear string 52 is displaced with respect to the blade edges 6a and 8a.

  However, in the jacket removal tool 1 according to the present embodiment, the blade edges 6a, 8a approach each other while relatively changing the angle between the opposing receiving groove internal blade 6 and the opposing groove internal blade 8. Therefore, even if some deviation occurs in the initial arrangement of the covered cable 50, the tear string 52 can be surely exposed. This mechanism will be described in detail with reference to FIGS.

  FIG. 8 is a side view showing the movement of the opposed groove inner blade 8 when the handle portion 4 rotates. FIG. 9 shows the movement of the opposing groove inner blade 8 along the covered cable 50 when cutting the jacket 51 as the handle portion 4 rotates.

  First, referring to FIG. 8, in a state where the handle portion 4 is opened, the receiving groove internal blade 6 and the opposing groove internal blade 8 are in a state where the blade edges 6a, 8a of each other are opened in a C shape. Yes. When the handle portion 4 is closed toward the main body portion 2 side, the change in the position of the cutting edge 8a of the opposing groove inner blade 8 at each stage is accommodated as schematically shown by a plurality of one-dot chain lines. It approaches while changing so that it may become gradually parallel with the blade edge | tip 6a of the blade 6 provided in a groove | channel. Finally, in the state where the handle portion 4 is completely closed as shown in FIG. 6C described above, the receiving groove internal blade 6 and the opposing groove internal blade 8 are arranged in parallel to each other.

  That is, when the opposed groove inner blade 8 is cut into the outer jacket 51 while sliding the covered cable 50 between the housing groove 2a and the opposed groove 4a, a twisted cut curved surface is formed. In FIG. 8, a specific position of the blade edge 8 a is marked with a black circle 30 so that the trajectory of the opposing groove-installed blade 8 can be followed. Moreover, the change of the specific position of the blade edge | tip 8a shown with the black circle 30 is connected and shown with the dashed-two dotted line. As can be seen from FIG. 8, when viewed from the direction in which the rotation shaft 10 extends, the black circle 30 depicts an arc trajectory centered on the rotation shaft 10.

  On the other hand, in FIG. 9, a state in which the opposed groove inner blade 8 (see FIG. 8) advances through the outer jacket 51 is shown from a direction perpendicular to the rotation shaft 10. In FIG. 9, it is assumed that the covered cable 50 is arranged so that the rotating shaft 10 is at the bottom and the rotating end is at the top.

  Accordingly, the counter-groove inner blade 8 approaches the side surface of the covered cable 50 slightly from the lower side (rotation shaft side) than the center line indicated by the alternate long and short dash line as the handle portion 4 rotates. In this case, as shown in FIG. 8, the opposed groove internal blade 8 is integrated with the handle portion 4 and draws a circular arc track and approaches the covered cable 50, so that the blade edge 8 a is first moved from the rotating shaft 10 side. Abut.

  In FIG. 9, the trajectory of the specific position of the cutting edge 8a indicated by the black circle 30 in FIG. 8 is indicated by a two-dot chain line arrow. As described above, when the jacket removal tool 1 is slid so as to send the coated cable 50 to the right side in FIG. The blade edge 8a of the opposed groove inner blade 8 changes its angle so that it becomes parallel to the blade edge 6a of the housing groove inner blade 6 as the handle portion 4 approaches the main body portion 2, so that the rotation edge gradually moves. Slide to the side. In this manner, the opposed groove inner blade 8 cuts a part of the outer jacket 51 while forming the twisted cutting surface 51a indicated by the oblique lines in FIG.

  That is, as shown in FIG. 9, since the opposed groove inner blade 8 advances through the outer jacket 51 with sliding in the circumferential direction, a slight swing width W is generated. As described above, in the jacket removal tool 1 according to the present embodiment, even when the arrangement of the covered cable 50 before cutting is slightly shifted from the cutting edge 6a, the opposing groove inner blade 8 in the circumferential direction. Therefore, the probability of passing through the embedment position of the tear string 52 increases, and it is possible to reliably expose the blade edge 8a.

  As shown in FIG. 8, the change in the angle of the blade edge 8a of the opposed grooved inner blade 8 that moves with the rotation of the handle portion 4 varies depending on the distance between the rotation shaft 10 and the opposed groove 4a. In other words, if attention is paid only to the behavior of the opposed grooved blade 8 in the vicinity of the covered cable 50 to be sandwiched, the angle change of the opposed grooved blade 8 increases as the opposed groove 4a is formed closer to the rotary shaft 10. Will grow. Therefore, the swing width W in the circumferential direction can be adjusted by appropriately selecting the positional relationship between the position where the housing groove 2a and the opposing groove 4a are formed and the rotation shaft 10.

In the above-described embodiment, the configuration in which the receiving groove inner blade 6 and the opposing groove inner blade 8 are provided in the receiving groove 2a and the facing groove 4a is shown as an example. However, if an internal blade is provided in at least one of the accommodation groove 2a and the opposing groove 4a, at least one tear string can be reliably exposed. In other words, the configuration shown in the present embodiment is suitable for the covered cable in which two tear strings are embedded, and either one of the internal blades is provided for the covered cable in which only one is embedded. Is enough.

  Moreover, in said embodiment, the handle | steering-wheel part 4 was closed, and the structure in which the substantially perimeter of the covered cable 50 was accommodated in the state which the accommodation groove | channel 2a and the opposing groove | channel 4a joined is shown as an example. However, if at least the distance between the groove bottom of the receiving groove or the opposing groove and the cutting edge of the inner blade is substantially the same as the embedding depth of the tear string, the receiving groove and the opposing groove are The depth does not need to cover the entire circumference of the covered cable. Furthermore, the accommodation groove and the opposing groove may not form a cylindrical surface along the outer diameter of the covered cable.

  In the above-described embodiment, the configuration in which the handle portion 4 is attached to the substantially central position of the main body portion 2 by the rotation shaft 10 is shown as an example.

  Further, in the above-described embodiment, a flat blade is employed for each of the receiving groove inner blade and the opposing groove inner blade, and the cutting edge is arranged perpendicular to the extending direction of the receiving groove and the opposing groove. Is shown as an example. However, the present invention is not limited to this, and it may be configured with a single blade whose blade edge is gently inclined in a plan view. Furthermore, it may be a flat blade with a blade shape formed in a V shape or a U shape in plan view. If comprised in this way, since a protrusion is stabilized in the valley part of a V shape or a U shape, it can work more efficiently.

  In the above embodiment, the configuration of the covered cable 50 is shown as an example of the object to be stripped, but specifically, 24 (24 cores), 40 (40 cores), 40Z (40 cores), 100Z ( An ANS cable of a line type such as (100 cores) is a main target. Therefore, according to the thickness of the covering of these cables, the distance between the receiving groove and the receiving groove internal blade or the distance between the opposing groove and the opposing groove internal blade is set.

  According to the present invention, the tear string embedded in the jacket can be easily and surely exposed without damaging the cable core. Therefore, the tear string is embedded regardless of the number of the embedded strings. This is useful for optical fiber cables and signal lines having metal core wires.

DESCRIPTION OF SYMBOLS 1 Outer strip remover 2 Main-body part 2a Accommodating groove 4 Handle part 4a Opposing groove 2b, 4b Opening 2c, 4c Inclined surface 2d, 4d Groove bottom 6 Accommodating groove inner blade 8 Opposing groove inner blade 6a, 8a Cutting edge 10 Rotation Shaft 50 sheathed cable (optical fiber cable)
50a Optical fiber 51 Outer jacket 52, 53 Tear string 56 Projection 57 Core part D1, D2 Gap D3, D4 Embedded depth

Claims (3)

A jacket removal tool for a covered cable in which a tear string is embedded inside the jacket,
A main body formed with an accommodation groove capable of accommodating a part of the side surface of the coated cable;
A handle portion that is formed so as to be opposed to the receiving groove so as to receive the other portion of the coated cable that is opposite to the other portion of the covered cable, and is rotatably attached to the main body portion; ,
An internal blade provided in at least one of the receiving groove and the opposing groove so that the distance from the groove bottom to the blade edge is substantially the same as the embedded depth of the tear string;
A jacket removing tool comprising:   The said inner blade is provided in the said accommodation groove | channel and the said opposing groove | channel, The jacket removal tool of Claim 1 characterized by the above-mentioned.   The internal blade provided in the receiving groove and the internal blade provided in the opposing groove are arranged so that the blade edges come close to each other and in the extending direction of the receiving groove and the opposing groove. 3. The jacket removing tool according to claim 2, wherein the jacket removing tool is inclined so that each blade edge is directed in the same direction.