JP5014317B2 - Wire sheath stripping tool - Google Patents

Description

  The present invention relates to an electric wire covering stripping tool including a blade body for peeling off a covering body covering a core wire, and more specifically, a guard that slides between a position where the blade body is exposed and a position where the blade body is covered is provided. Relates to the peeling tool.

  An erected electric wire (hereinafter referred to as an “overhead wire”) installed on a power pole is a core wire covered with a covering, but the core wire is exposed by peeling the covering between the power pole and the power pole. The exposed core wire may be connected to the core wire of another overhead wire. Patent Document 1 discloses an electric wire covering peeling tool (hereinafter referred to as “peeling tool”) for working in an energized state, that is, in a live wire state when peeling the covering of the overhead wire. .

  As shown in FIG. 4, the peeling tool includes a support body 10 having a U-shaped front view, a pressing shaft 20 having a screw portion 21, and a blade body holder 40 to which a blade body 30 is fixed.

  The support body 10 is integrally formed in a U shape by a first support portion 11 and a second support portion 12 that face each other, and a third support portion 13 that spans between the support portions 11 and 12. A concave groove 11 a having a shape for supporting a part of the overhead wire 1 is provided on a surface of the first support portion 11 facing the second support portion 12. The second support portion 12 is formed with a screw hole (not numbered) for screwing the screw portion 21 of the pressing shaft 20. An arm 14 projects from the third support portion 13, and an engagement ring 15 is provided at the tip of the arm 14.

  Further, the pressing shaft 20 is made to advance and retract when the screw portion 21 is screwed into the screw hole of the second support portion 12 of the support 10. An engagement ring 22 is provided at the outer end of the pressing shaft 20. The blade holder 40 is connected to the tip of the pressing shaft 20 and slides with the third support portion 13 of the support 10 as a guide as the pressing shaft 20 advances and retreats. Further, the blade edge 30a of the blade body 30 fixed to the blade body holder 40 protrudes toward the concave groove 11a.

  In order to peel off the covering 1a of the overhead wire 1 using such a peeling tool, first, the operating rod 2 (see FIG. 5) is placed on the engaging ring 22 of the pressing shaft 20 or the engaging ring 15 of the arm 14. A hook-like engagement portion 2 a provided at the tip is hooked, the peeling tool is placed along the upper overhead wire 1, and the concave groove 11 a of the first support portion 11 of the support 10 is hooked on the overhead wire 1. Next, the engaging portion 2a of the operating rod 2 is hooked on the engaging ring 22 of the pressing shaft 20, and the pressing shaft 20 and the blade holder 40 are advanced as shown in FIG. Is cut into the covering 1a of the overhead wire 1.

  Next, the engaging portion 2a of the operating rod 2 is hooked on the engaging ring 15 of the arm 14, and the covering body 1a is peeled only half a turn by rotating the peeling tool half a turn with the overhead wire 1 as a fulcrum. Next, the engaging portion 2a of the operating rod 2 is hooked on the engaging ring 22 of the pressing shaft 20, and the peeling tool is rotated only half a circle, whereby the covering 1a is peeled over the entire circumference.

  In order to peel the covering body 1a further longer after peeling the covering body 1a with a certain length by the peeling tool described in Patent Document 1, the blade body 30 must be shifted in the length direction. Don't be. However, in this case, one end of the blade holder 40 is in contact with the exposed core wire 1b and the other tip is in contact with the cover 1a. Therefore, the blade holder 40 and the blade 30 are slightly inclined. It becomes a posture. Therefore, when the peeling tool is rotated in this inclined posture, the covering body 1a cannot be peeled to an intended state.

  Further, in the peeling tool described in Patent Document 1, since the blade tip 30a of the blade body 30 is exposed, the operator holds the peeling tool in a random manner before work, and the operator's finger is the blade body 30. The blade edge 30a may be touched and injured.

  For this reason, the peeling tool provided with the guard 50 as shown in FIG. 6 in the blade body holder 40 is provided. The guard 50 is slidably attached in a direction intersecting with a pair of plate-like projecting pieces 42 and 42 respectively protruding from a pair of side plates 41 and 41 of a blade holder 40 as shown in FIG. Yes.

That is, the guard 50 is formed in a rectangular parallelepiped main body 51 that is longer than the width of the protruding piece 42 over the entire width thereof, and a recess 53 into which the protruding piece 42 is fitted is formed over the entire width. In addition, a back-side convex portion 54a and an outer-side convex portion 55a are provided so as to protrude from a back-side end portion 54 and an outer-side end portion 55 adjacent to both sides of the concave portion 52, respectively. Then, a female screw (not numbered) is formed on the protruding piece portion 42, and a screw 43 is screwed onto the female screw. Bis 43 penetrates the long hole 53 of the guard 50, the compression spring 44 and the guard 50 is biasing member between the head 43a of the screw 43 and the protruding piece portion 42 is sandwiched, the guard 50 is a compression spring 44 It is urged | biased toward the protrusion piece part 42 by the spring force.

  And when not using a peeling tool, as shown to Fig.8 (a), the back side edge part 54 of the guard 50 protrudes rather than the back side edge of a head so that the blade body 30 may be covered (henceforth). This position is called “retreat position”). At this time, the protruding piece portion 42 is fitted into the recessed portion 52 of the guard 50, and the back-side protruding portion 54 a and the outer protruding portion 55 a are locked to each edge of the protruding piece portion 42, so that the guard 50 is not displaced. Has been. Therefore, when the guard 50 is in the retracted position, the operator's finger does not touch the blade edge 30a of the blade body 30, and safety is ensured.

  Moreover, when peeling the covering 1a using a peeling tool, the operator pulls the guard 50 outward. That is, the guard 50 compresses the compression spring 44, and the guard 50 is slid so that the rear-side convex portion 54a of the guard 50 rides on the protruding piece portion 42, whereby as shown in FIG. 30 is exposed (hereinafter, this position is referred to as a “protruding position”). By forming the elongated hole 53 in the guard 50, the guard 50 can slide even if the screw 45 is screwed. Further, the guard 50 is in a slightly inclined posture by the state in which the rear side convex portion 54a is riding on the protruding piece portion 42.

  And when peeling the covering body 1a of the overhead wire 1 which has not peeled the covering body 1a at all, both guards 50 and 50 are slid to the protruding position.

  Further, when the covering body 1a is already peeled and the length to be peeled is extended, one guard 50 is slid to the projecting position, and the other guard 50 is left in the retracted position. The retracted position guard 50 is in contact with the exposed core wire 1b, and the protruding position guard 50 is contacted with the covering body 1a so that the blade body 30 is parallel to the outer surface of the covering body 1a. Then, the cutting edge 30a of the blade body 30 is bitten into the covering body 1a.

  Further, after the work, the blade body 30 is covered by the back end 54 of the guard 50 by returning the guard 50 to the retracted position as shown in FIG. Thus, since the guard 50 is temporarily fixed by the spring force of the compression spring 44, the work of tightening or loosening the screw 45 is unnecessary.

JP-A-6-261432

  The guard 50 positioned at the protruding position so that the blade edge 30 a of the blade body 30 is exposed is merely temporarily fixed by the pressing force of the compression spring 44. Therefore, the guard 50 returns to the retracted position only by applying a small external force such as when the peeling tool collides with the overhead wire 1 or when the operation rod 2 or the like collides with the peeling tool.

  Then, since the blade body 30 is covered with the guard 50 and the covering body 1a cannot be peeled off, the operator must slide the guard 50 to the protruding position again. In particular, when the guard 50 returns to the retracted position while the peeling tool is lifted along the overhead wire 1, the peeling tool must be returned to the hand, and the operation is troublesome and the work efficiency is reduced.

  Then, this invention makes it a subject to provide the peeling tool of the electric wire covering body which prevented the guard which slid to the protrusion position from returning to a retracted position easily.

An electric wire covering stripping tool according to the present invention includes a protruding piece provided on a pair of blade holders sandwiching both ends of a blade having a predetermined width, a recess into which the protruding piece is fitted, and a depth of the recessed portion. And a guard provided with a back convex portion at the back end adjacent to the side, and the back end of the guard protrudes from the back end edge of the protruding piece portion to cover the blade edge of the blade body. An electric wire in which the guard slides between the position where the guard protrudes and the position where the back convex portion of the guard rides on the back side of the protruding piece portion to expose the blade edge of the blade body with the guard in an inclined posture A covering peeling tool, wherein the guard is in an inclined posture, and a notch groove is formed in a concave portion that abuts on the outer edge of the protruding piece.
Further, the wire covering body peeling tool according to the present invention includes a blade body having a predetermined width, a blade body holder having a pair of projecting piece portions arranged on both sides in the width direction of the blade body, and each projecting piece. And a pair of guards that slide between a position that covers the blade edge of the blade body and a position that exposes the blade edge of the blade body, each guard being provided from the opposite side of the blade body A concave portion for fitting the protruding piece portion and a rear convex portion protruding to the blade body side adjacent to the concave portion are formed, and the guard has a protruding piece portion in the concave portion at a position covering the blade edge of the blade body. The back side convex part protrudes toward the blade body from the projecting piece part and is in an inclined posture at a position where the blade edge of the blade body is exposed, and the back side convex part is on the outer surface on the back side of the projecting piece part. And the recessed portion of the guard is engaged with the protruding piece portion so as to contact the outer edge of the protruding piece portion. A stripping tool for an electric wire covering, wherein each guard slides individually, and a notch that engages the outer edge of the protruding piece portion into a recessed portion that contacts the outer edge of the protruding piece portion in an inclined posture. A groove is formed.

  According to this wire covering body peeling tool, the back end of the guard protrudes from the back end edge of the protruding piece to the back (covering position) and the back of the guard The side convex part rides on the protruding piece part, and the guard slides to a position (protruding position) where the blade edge of the blade body is exposed in an inclined posture, but at the protruding position, the outer edge of the protruding piece part is Engage in a notch groove formed in the recess. Therefore, even if a slight external force is applied to the guard positioned at the protruding position, the notch groove of the guard is caught on the edge of the protruding piece portion, so the guard maintains the protruding position without being displaced. .

Then, the operator grabs a guard, by removing the cutout groove moth over de from the edge of the protruding parts, it can be returned to inlet position retreat guard. Since both guards are positioned at the retracted position, the blade edge of the blade body is covered by the back end of the guard, and safety can be ensured. Furthermore, when the already peeled covering is to be peeled off longer, one guard is set in the retracted position, the other guard is set in the protruding position, one guard is brought into contact with the exposed core wire, and the other guard is set. Is brought into contact with the cover so that the blade is parallel to the outer surface of the cover.

  Further, in the above-described wire covering body peeling tool according to the present invention, a cutting blade whose cutting edge is directed outward at a right angle with respect to the blade body is provided between each edge of the blade body and each protruding piece portion. And it is preferable to arrange | position so that a blade edge may correspond with the position of the blade edge of the said blade body.

  According to this wire covering body peeling tool, the guard covers the cutting blade even if a cutting blade for biting the covering body in the longitudinal direction is provided to peel the covering body. Slide into the retracted position to be exposed and the protruding position to be exposed. That is, the guard can ensure the safety of the peeling tool for the wire covering body provided with the cutting blade.

  In the wire covering stripping tool according to the present invention, a female screw is formed in the projecting piece, a long hole is formed in the concave portion of the guard, and a screw having a head is formed on the guard. It is preferable to penetrate the elongated hole and be screwed into the female screw of the protruding piece portion.

  According to this wire covering stripping tool, the screw passes through the long hole formed in the guard and is screwed into the female screw formed in the protruding piece portion, whereby the guard is locked to the head of the screw. It will be in a state and it can prevent falling off from a protrusion piece part. And a guard can be slid between a retreat position and a protrusion position because a screw moves relatively in a long hole.

  In the wire covering stripping tool according to the present invention, it is preferable that the urging member made of a compression spring is interposed between the screw head and the guard.

  According to this wire covering body peeling tool, the urging member is a compression spring, so that the structure can be simplified and the durability can be improved.

  According to the present invention, the notch groove of the guard protrudes by forming the notch groove in the concave portion that contacts the outer edge of the protruding piece portion at the protruding position where the guard is pulled out and in the inclined posture. It is possible to provide a stripping tool for an electric wire covering body that is in a state of being caught on the edge of one part and maintaining the protruding position without the guard being displaced. Therefore, by using this wire covering body peeling tool, even if an external force is applied to the guard, the guard does not return to the retracted position that covers the blade body, and the workability can be improved.

  An embodiment of a wire covering stripping tool (hereinafter referred to as “stripping tool”) according to the present invention will be described with reference to FIGS. 1 to 3. However, the same parts as in the prior art will be described with the same reference numerals.

  The wire covering body peeling tool includes a pair of guards 50 that slide along a pair of projecting pieces 42, 42 projecting from a pair of side plates 41, 41 of a blade body holder 40 that sandwiches both ends of the blade body 30. 50 has a notch groove 56 formed therein. The guard 50 is longer than the width of the projecting piece portion 42, and as shown in FIG. 1, a recess 52 into which the projecting piece portion 42 is fitted is formed on the inner surface of the main body 51, and a long hole 53 is formed in the recess 52. Is formed in the length direction, but the notch groove 56 is formed over the entire width of the recess 52.

Further, at the back end 54 and the outside end 55 of the guard 50, a back convex 54 a and an outside convex 55 a are projected inwardly adjacent to the recess 52. The concave portion 52 of the guard 50 abuts on the outer surface of the protruding piece portion 42, and the inner surfaces of the rear convex portion 54a and the outer convex portion 55a of the guard 50 are in contact with the inner edge and outer edge of the protruding piece portion 42. It is supposed to touch.

  On the other hand, the protruding piece 42 is a thin plate having both side edges formed in parallel, and is formed with a recess (not numbered) into which the recess 52 of the guard 50 is fitted. A female screw (not numbered) is formed in the recess, and a screw 45 passing through the long hole 53 of the guard 50 is screwed into the female screw. A compression spring 44, which is an urging member, is interposed between the head 45a of the screw 45 and the guard 50. The guard 50 is urged by the protruding piece 42, and the guard 50 and the protruding piece 42 are in close contact with each other. Have been to.

  Further, a cutting blade 31 is disposed between the blade body 30 and the protruding piece portion 42 as shown in FIG. This cutting blade 31 is for cutting the covering body in the radial direction of an overhead wire (not shown), and the cutting edge 31a of the cutting blade 31 is directed outward at a right angle to the blade body 30, And it arrange | positions so that it may correspond with the blade edge | tip 30a of the blade body 30. FIG.

  Since the other portions are the same as the conventional one, the method of using the peeling tool will be described next with reference to FIG.

  First, when the peeling tool is not used, as shown in FIG. 3A, the protruding piece portion 42 is fitted into the concave portion 52, the rear side convex portion 54a, and the outer side convex portion 55a of the guard 50, and the rear side end portion. 54 covers the cutting edge 30a of the blade body 30 and the cutting edge 31a of the cutting blade 31 (retreat position). The guard 50 in the retracted position is urged toward the protruding piece 42 by the compression spring 44 so as not to be displaced. Therefore, when the guard 50 is in the retracted position, even if the operator holds the peeling tool at random, the finger does not touch the cutting edge 30a of the blade body 30 and the cutting edge 31a of the cutting blade 31 and it is safe. Is secured.

  And in order to peel the covering body of an overhead wire, as shown in FIG.3 (b), both guards 50 are pulled out outside. That is, the guard 50 compresses the compression spring 44 and slides so that the rear side convex portion 54a of the guard 50 rides on the protruding piece portion 42, and the blade edge 30a of the blade body 30 and the blade edge 31a of the cutting blade 31 are exposed. The guard 50 is positioned so as to cause it to protrude (protruding position). In addition, since the recessed part 52 slides in the recessed part of the protrusion piece part 42, the guard 50 slides without position shift.

  When the guard 50 is in the projecting position, the guard 50 is slightly inclined, and the outer edge of the projecting piece 42 is formed in the notch groove 56 of the guard 50 as shown in the enlarged view of FIG. Engage in. Therefore, even if a slight external force is applied to the guard 50 such as when the peeling tool collides with the overhead wire or when an operating rod or the like collides with the peeling tool, the notch groove 56 of the guard 50 is caught on the edge of the protruding piece portion 42. Since it will be in a state, the guard 50 maintains a protrusion position.

  Then, the worker places the peeling tool along the upper overhead line, causes the cutting edge 30a of the blade body 30 and the cutting edge 31a of the cutting blade 31 to bite into the covering body, and peels the covering tool once, thereby peeling the covering body. To do. Thereafter, the operator returns the peeling tool to the hand and returns the guard 50 to the retracted position. At this time, when the compression spring 44 is compressed, the guard 50 changes from an inclined posture to a posture parallel to the protruding piece portion 42, and when pressed to the back side, the protruding piece portion 42 becomes the concave portion 52 and the guard 50. It fits in the back side convex part 54a and the outer side convex part 55a. Therefore, the guard 50 is not easily displaced, so that the safety of the worker is ensured.

  Further, when the covering of the overhead wire is further peeled, one guard 50 is left in the protruding position and the other guard 50 is set in the retracted position. Then, by bringing one guard 50 at the protruding position into contact with the core wire of the overhead wire and bringing the other guard 50 at the retracted position into contact with the covering body, the blade body 30 is made parallel to the outer surface of the covering body. To do.

  And the cutting edge 30a of the blade body 30 of the peeling tool and the cutting edge 31a of the cutting blade 31 are bitten into the covering body, and the covering body is peeled by making the peeling tool go around once. Also at this time, the guard 50 in the protruding position is not displaced, and the cutting edge 30a of the blade body 30 bites into the outer peripheral surface of the covering body over the entire width, so that the covering body is peeled in an intended state. .

  Note that the present invention can be variously modified without being limited to the above embodiment. For example, a peeling tool used when peeling a covering thinly does not include the cutting blade 31, and in a peeling tool that does not include such a cutting blade 31, the blade body 30. A guard 50 that slides into a retracted position that covers only the blade edge 30a and a protruding position that is exposed is provided.

  Further, the urging member can be a disc spring or other springs instead of the compression spring 44. Further, the guard 50 may be provided with a rectangular tube-shaped portion in the protruding piece portion 42 instead of the long hole 53 through which the screw 45 penetrates, and can slide within the rectangular tube-shaped portion.

It is a perspective view showing one embodiment of the guard which constitutes the peeling tool of the electric wire covering object concerning the present invention. It is one Embodiment of the peeling tool of the electric wire covering body which concerns on this invention, Comprising: It is a perspective view which shows the principal part. It is one Embodiment of the peeling tool of the electric wire covering body which concerns on this invention, Comprising: (a) is a partial cross section top view which shows the state which the guard has retracted, (b) is the state from which the guard protrudes. FIG. It is the conventional peeling tool of an electric wire covering, Comprising: (a) is a top view, (b) is a partial cross section front view. It is a front view which shows the state which is using the peeling tool of the conventional electric wire covering. It is a perspective view which shows the guard which comprises the peeling tool of the conventional wire coating body. It is the conventional peeling tool of the electric wire coating body different from the above, Comprising: (a) is a top view, (b) is a partial cross section front view. It is one Embodiment of the peeling tool of the electric wire covering body shown in FIG. 7, Comprising: (a) is a partial cross section top view which shows the state which the guard has retracted, (b) is the state which the guard protrudes FIG.

Explanation of symbols

30 ... Blade 30a ... Cutting edge 31 ... Cutting blade 31a ... Cutting edge 40 ... Blade holder 42 ... Projection piece 43 ... Screw 43a ... Head 44 ... Biasing member (compression spring)
50 …… Guard 52 …… Concavity 53 …… Elongation hole 54 …… Back end 54a… Back projection 56 …… Notch

Claims (5)

A protruding piece provided on a pair of blade holders that sandwiches both ends of a blade having a predetermined width, a recessed portion into which the protruding piece is fitted, and a rear end adjacent to the inner side of the recessed portion. A guard provided with a portion, and the rear end of the guard protrudes from the rear end edge of the protruding piece, so that the position of the cutting edge of the blade body is covered and the rear convex portion of the guard protrudes. A stripping tool for the electric wire covering body that is adapted to slide the guard between the position where the guard is inclined and the blade edge of the blade body is exposed by riding on the back side of the one part,
A stripping tool for an electric wire covering body, wherein the guard is in an inclined posture, and a notch groove is formed in a concave portion that abuts against the outer edge of the protruding piece.   A blade body having a predetermined width, a blade body holder having a pair of projecting piece portions disposed on both sides in the width direction of the blade body, and disposed on the outside of each projecting piece portion to cover the cutting edge of the blade body A pair of guards that slide between a position and a position at which the blade edge of the blade body is exposed.Each guard has a recessed portion into which a protruding piece portion is fitted from the opposite side of the blade body, and is adjacent to the recessed portion. And a rear projection that protrudes toward the blade body is formed, and the guard is configured to fit the protruding piece into the recess at a position that covers the cutting edge of the blade, and the rear protruding portion is more than the protruding piece. Projected toward the blade body and exposed to the blade edge of the blade body in an inclined posture, the rear convex part rides on the outer surface on the rear side of the projecting piece part, and the concave part of the guard is outside the projecting piece part A stripping tool for the wire covering body engaged with the protruding piece so as to abut against the edge,
  Each of the guards slides individually, and a notch groove for engaging the outer end edge of the protruding piece portion is formed in a portion of the concave portion that contacts the outer end edge of the protruding piece portion in an inclined posture. A stripping tool for the wire covering. The cutting blade whose cutting edge is directed perpendicularly outward with respect to the blade body is between each edge of the blade body and each protruding piece, and the cutting edge matches the position of the cutting edge of the blade body It is made to arrange, The peeling tool of the electric wire covering body of Claim 1 or 2 characterized by the above-mentioned. A female screw is formed in the protruding piece, a long hole is formed in the concave portion of the guard, and a screw having a head penetrates the long hole of the guard and is screwed into the female screw of the protruding piece. The stripping tool for a wire covering body according to any one of claims 1 to 3, wherein the stripping tool is combined. Wherein between the head and the guard screws, breaking tool of the wire coating material according to claim 4, biasing member that Do from the compression spring, characterized in that it is interposed.

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