JP5946851B2 - Coating fall-off prevention tool and electric wire coating stripping tool using the same - Google Patents

Description

  The present invention relates to a sheath drop-off prevention device attached to a wire sheath stripper used for stripping the sheath of an intermediate portion of a covered sheathed wire, and a wire sheath configured by attaching this to a wire sheath stripper. It relates to a stripping tool.

  In a covered electric wire installed between utility poles, in order to attach a high-voltage underline connector or a grounding short circuit device, it is necessary to expose the core wire by peeling off the electric wire covering at an intermediate portion of the electric wire. In these operations, in order to ensure safety, a wire sheath stripper that can be operated using an indirect hot wire tool is used (see Patent Documents 1 and 2, etc.).

  FIG. 6 shows an example of a conventional wire stripping device. The wire sheath stripping device 1 has a body portion 2 formed in a U-shape and a movable body that moves up and down inside the body portion 2. It has the part 3 and the adjustment mechanism 4 which moves this movable part 3 up and down. The main body 2 is located at the upper part of the U-shape, and is hooked to the hook 21 that is hooked on the electric wire, and the base 22 that is disposed below the hook 21 and located at the lower part of the U-shape. And a side portion 23 provided so as to connect one end of each of the hook portion 21 and the base portion 22.

  An auxiliary rod 24 is fixed to the side portion 23 of the main body 2, and an eye bolt 25 is fixed to the tip of the auxiliary rod 24.

  The movable part 3 is positioned between the hook part 21 and the base part 22 of the main body part 2 and is moved up and down by the adjusting mechanism 4. The movable part 3 includes a base member 31 and side plates 32 fixed on both sides thereof. I have.

  The adjustment mechanism 4 is rotatably connected to the movable portion 3, passes through a screw hole formed in the base portion 22, and is attached to the base portion 22 so as to be able to advance and retract, and a main shaft 41 An eye handle 43 having a ring hole 42 opened so as to be able to be inserted and engaged with a hook attached to the tip of the insulating operation rod is connected to the lower portion of 41 so as not to be relatively rotatable.

  Accordingly, by rotating the eye handle 43 of the adjusting mechanism 4, the main shaft 41 can be moved up and down with respect to the main body 2, and the movable portion 3 can be moved closer to and away from the hook portion 21. It has become.

  A main blade (first blade body) 34 provided so as to be parallel to the extending direction of the electric wire is fixed to the movable portion 3 over almost the entire width direction of the base member 31, and the main blade Auxiliary blades (second and third blades) provided so as to be parallel to the side plate 32 between the base member 31 and the side plate 32 on both sides of the plate 34 (provided to be orthogonal to the electric wires) Body) 35 is fixed.

  When the movable part 3 approaches the hook part 21 of the main body part 2 by the adjustment mechanism 4, the main blade 34 and the auxiliary blade 35 are attached to the covering 100 a of the covered electric wire 100 positioned between the movable part 3 and the hook part 21. It is set up to eat at the same time.

  In the upper part of the movable part 3, the main blade 34 is kept parallel to the electric wire positioned in the arc-shaped groove 21a formed on the inner surface of the hook part 21, and the main blade 34 and the auxiliary blade 35 are connected to the core of the electric wire. A guard 36 is provided to prevent interference. The guard 36 is attached to the side plate 32 so as to be able to advance and retreat along a guard groove 36a formed in the guard 36, and is held by being pressed against the side plate 32 by a spring 38 attached with a screw 37. By adjusting within the range of the guard groove 36a, even when the movable part 3 is arranged from the portion without covering to the portion with covering, the main blade is maintained parallel to the electric wire, and the main blade 34 and auxiliary The blade 35 is prevented from inadvertently hitting the core wire.

  In order to remove the covering of the intermediate portion of the covered electric wire 100 installed between the utility poles using such an electric wire covering stripper 1, as shown in FIG. The auxiliary wire 24 is gripped by operating the hot wire gripping tool, and the hook portion 21 of the main body 2 of the wire sheath stripper 1 is hooked on the portion where the sheath of the sheathed wire is to be stripped (FIG. 7A). Thereafter, the operator inserts the bind hammer 102 into the ring hole 42 of the eye handle 43 and operates the eye handle 43 while pulling the bind hammer 102 downward so that the hook portion 21 does not come off the electric wire 100 in that state. To move the main shaft 41 forward, and move the movable portion 3 closer to the hook portion 21.

  Then, the electric wire 100 is clamped and clamped by the hook portion 21 and the movable portion 3. At this time, on the front side of the wire sheath stripper 1, the main blade 34 is in a state of biting into the coating 100 a of the electric wire 100, and the auxiliary blade 35 is bitten into the coating 100 a of the electric wire 100 on both sides of the main blade 34. By inserting the bind hammer 102 into either the eye handle 43 of the main shaft 41 or the eyebolt 25 of the auxiliary rod 24 and rotating the wire sheath stripper 1 around the wire 100, It becomes possible to peel off the coating 100a of the electric wire 100 with the width (FIG. 7B). In this case, the stripped coating 100a is discharged so as to cover the movable portion 3 outside the main blade 34 (on the front side of the movable portion 3), as shown in FIG. 7C.

JP 2010-22182 A JP 2012-39750 A

  Thus, since the stripped coating 100a is released to the outside of the main blade 34, the released coating may be dropped due to the vibration of the electric wire or the wire coating stripper. For this reason, careful work is required in order to prevent the stripped coating from falling, and work such as removal of the released coating using an insulating jacket is required, which requires work labor.

  The present invention has been made in view of such circumstances, and can reliably prevent the coating peeled off from the covered electric wire, and after peeling off using another indirect stopcock tool such as an insulating jacket. Providing a sheath drop prevention tool that reduces work effort and improves work efficiency by eliminating the need to remove the sheath, and a wire sheath stripping tool configured by attaching this to the sheath stripper. The main issue.

In order to achieve the above-described object, a sheath drop-off prevention device according to the present invention includes a hook portion that is hooked on a covered electric wire, and holds the covered electric wire between the hook portion by approaching and moving away from the hook portion. Or a movable part that opens, and first to third blade bodies that are fixed to the movable part and that can be cut into the sheath of the covered electric wire, and the blade edge of the first blade body is that of the covered electric wire. The second and third blade bodies are disposed on both sides of the first blade body, and the cutting edge is orthogonal to the extension direction of the covered electric wire. The movable wire is rotated around the covered electric wire in a state where the first to third blades are bitten into the covering of the covered electric wire. The coating is peeled off at a predetermined width, and the stripped coating is A pair of attachment portions that are used for a wire sheath stripper that is discharged to the outside of the first blade body, and that are fixed by fixing means on both sides of the movable portion, and the pair of attachments A pair of parts that are integrally provided between the parts, bend so as to cover the outside of the first blade body from the vicinity of the first blade body of the movable part, and can hold the peeled coating A pair of holding pieces, the pair of holding pieces being provided at a predetermined interval in the width direction of the first blade body , the pair of holding pieces being configured by a flexible member, It is characterized in that it is connected by a bridging piece extending in the width direction on the outer side of the cutting edge of one blade body, and the outer side of the cutting edge of the first blade body is covered with the bridging piece .

  Therefore, the coating peeled off by the first to third blades is formed in the process of being released to the outside of the first blade body, and the ends that are integrated with the pair of curved holding pieces of the coating drop-off prevention tool. The outer periphery of the coating is held by a pair of holding pieces. Therefore, it is possible to hold the peeled coating firmly and eliminate the risk of falling off.

  In addition, since the coating held by the coating drop-off prevention tool is provided with a pair of holding pieces at a predetermined interval in the width direction of the first blade body, the gap between the holding piece and the holding piece is provided. It is possible to remove the cover by inserting the finger and pressing the covering.

At this time , since the pair of holding pieces of the coating fall-off prevention tool is made of a flexible member, it is elastic when holding the peeled coating or when removing the held coating from the coating fall-off prevention tool. It can be deformed. For this reason, it becomes possible to hold | maintain the stripped coating firmly, and it becomes possible to remove from the holding | maintenance part 52 by pushing a coating | cover .

Further, the pair of holding pieces are connected by a bridging piece extending in the width direction outside the cutting edge of the first blade body, and the outside of the cutting edge of the first blade body is covered with the bridging piece, There is no risk of a finger touching the first blade body accidentally when carrying the covering drop prevention portion or removing the covering.
In addition, it is good to make it easy to guide the stripped coating to the inside of the holding piece 52b by bending the bridging piece away from the first blade body in the direction opposite to the bending direction of the holding piece.

As described above, if the coating fall-off prevention tool according to the present invention and the wire coating stripping tool attached thereto are used, it is possible to reliably prevent the stripped coating from dropping, and after the stripping, the insulation jacket, etc. other strip coating becomes unnecessary to remove the taken using an indirect stopcock tool, also, when removing the retained coating from the coated falling prevention member, holding put fingers between the pair of hold pieces It can be removed by pressing the covered coating. For this reason, work labor can be reduced and work efficiency can be improved.
In addition, since the blade edge of the first blade body is covered with the bridging piece, there is no risk of the finger accidentally touching the first blade body when carrying the coating drop-off prevention unit or removing the coating.

1A and 1B are views showing a wire coating stripping tool in which a coating slip-off preventing device according to the present invention is attached to a wire coating stripping device, wherein FIG. 1A is a side view thereof, and FIG. The figure which shows the movable part vicinity seen from the direction, (c) is a figure which shows the movable part vicinity seen from the B direction of (a). 2A and 2B are views showing a covering drop-off prevention device according to the present invention, wherein FIG. 2A is a plan view thereof, FIG. 2B is a front view thereof, FIG. 2C is a bottom view thereof, and FIG. (E) is a right side view thereof, and (f) is a rear view thereof. FIG. 3 is a reference perspective view showing a coating drop-off preventing device according to the present invention. FIG. 4 is a diagram showing a step of stripping the coating of the wire using the wire coating stripping tool to which the coating slip-off preventing device according to the present invention is attached, and (a) is a state in which the blade is bitten into the coating. (B) is a figure which shows the state after stripping off coating | cover. FIGS. 5A and 5B are views showing an operation of removing the coating held by the coating slip-off preventing device according to the present invention, wherein FIG. 5A is a side view thereof, and FIG. 6A and 6B are diagrams showing a conventional wire sheath stripper, in which FIG. 6A is a front view thereof, and FIG. 6B is a side view thereof. FIG. 7 is a diagram for explaining the work of stripping the sheath of the covered wire using a conventional wire sheath stripper. FIG. 7A shows the wire sheath stripper hooked on the sheathed wire and moving the wire with the hooking portion. The figure which shows the state clamped by a part, (b) is a figure which shows the state which rotates the circumference | surroundings of a covered electric wire stripping device, (c) is the state by which the stripped coating was discharge | released to the outer side of the main blade FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, the electric wire coating stripping tool includes an electric wire stripping device 1 for stripping a coating in the middle of a coated electric wire, and a coating dropping prevention tool 5 for holding the stripped coating so as not to drop. It is configured.

  The wire sheath stripper 1 is known per se, and has a U-shaped main body 2, a movable part 3 that moves up and down inside the main body 2, and a vertical movement of the movable part 3. And an adjusting mechanism 4 to be configured.

  The main body 2 is located at the upper part of the U-shape and hooked on the covered electric wire, and the base part that is arranged to face the lower side of the hook 21 and is located at the lower part of the U-shape. 22 and a side portion 23 provided so as to connect one end of each of the hook portion 21 and the base portion 11.

  The hook portion 21 is formed with an arc-shaped groove 21 a extending in the width direction on the lower surface that is the inner surface facing the base portion 22, and can be hooked on an overhead wire (covered electric wire). An auxiliary rod 24 extending in a direction opposite to the extending direction of the hook portion 21 and the base portion 22 is fixed to the side portion 23 of the main body portion 2 by means such as screwing. An eyebolt 25 is fixed to the tip of the auxiliary rod 24.

The movable portion 3 is located between the hook portion 21 and the base portion 22 of the main body portion 2 and is moved up and down by the adjusting mechanism 4 and is fixed to both sides of the base member 31 by bolts 39. A side plate 32 and a back bar 40 which is located at the rear end of the side plate 32 and is supported between the side plates 32 on the back side of the side portion 23 are provided.

  The adjusting mechanism 4 is rotatably connected to the lower end surface of the base member 31 of the movable portion 13, and is attached to the base portion 22 so as to be able to advance and retract through a screw hole formed in the base portion 22. A main shaft 41, and an eye handle 43 which is connected to the lower portion of the main shaft 41 so as not to be relatively rotatable and has a ring hole 42 into which a hook attached to the tip of an insulating operation rod can be inserted and engaged. Yes.

  Therefore, the movable portion 3 can move the main shaft 41 up and down relative to the main body portion 2 by inserting a hook or the like into the ring hole 42 of the eye handle 43 of the adjusting mechanism 4 and rotating it. The base member 31 connected to the upper portion can be moved closer to and away from the hook portion 21 while restricting the separation of the base member 31 from the side portion 23 of the main body portion 2 by the back bar 40.

  The movable part 3 has a main blade (disposed on the side away from the side part 23 of the main body part 2 of the base member 31) so as to extend near the inner surfaces of both side plates 32 and face the side part 23. A first blade body 34 is screwed to the base member 31. Further, an auxiliary blade (second and third blade bodies) 35 parallel to the side plate 32 is provided between both ends of the main blade 34 and the side plate 32 by a bolt 39 for attaching the side plate 32 to the base member 31. 31 is fixed to both side surfaces.

These main cutting edge 34 and the auxiliary blade 35 is plate-like in form has been the cutting edge 34a at one directed to the hook portion 21, 35a is directed, main cutting edge 34 extends between the auxiliary blades 35 paired The cutting edge 34a is provided so as to be parallel to the extending direction of the covered electric wire sandwiched between the hook portion 21 and the movable portion 3, and the auxiliary blade 35 is arranged so that the cutting edge 35a is orthogonal to the covered electric wire. Is provided.

  When the movable part 3 approaches the hook part 21 of the main body part 2 by the adjusting mechanism 4, the main blade 34 is separated from the side part 23 by the covering of the covered electric wire positioned in the arcuate groove 21 a of the hook part 21. It is installed so as to cut in parallel to the side. In addition, when the movable part 3 approaches the hook part 21 by the adjusting mechanism 4, the auxiliary blade 35 is installed on both sides of the main blade 34 so as to bite into the covered wire at the same time in the direction perpendicular to the extension direction of the wire. ing.

  In addition, 36 is a guard provided in the position corresponding to the longitudinal direction both ends of the main blade 34 of the movable part 3. This guard 36 is attached to the movable part 3 by inserting a screw 37 through a guard groove 36a formed in the guard 36 so as to be able to advance and retreat along the guard groove 36a. It is held by pressing against 32. By adjusting the holding position of the guard 36 within the range of the guard groove 36a, even when the movable portion 3 is arranged from the portion without the covering of the wire to the portion with the covering, the main blade 34 is placed on the wire. The main blade 34 and the auxiliary blade 35 are kept parallel to prevent interference with the core wire of the electric wire.

  As shown in FIGS. 2 and 3, the sheath drop-off prevention tool 5 attached to such a wire sheath stripper 1 includes a pair of attachment portions 51 attached to both side plates 32 of the movable portion 3 and the pair of attachment portions 51. The holding portion 52 is integrally formed between the attachment portions 51.

  The mounting portion 51 is formed in a plate shape, and is a mounting substrate portion in which a through hole 51a is formed through which the existing bolt 39 provided for fixing the side plate 32 of the movable portion 3 can be inserted. 51b and a support plate portion 51c that extends from the mounting substrate portion 51b for a predetermined length and supports the holding portion 52.

  The holding portion 52 is integrally connected to an end portion of the mounting portion 51 (support plate portion 51c) opposite to the mounting substrate portion 51b via a connecting piece 52a, and has a predetermined interval with respect to the side plate 32. And a pair of holding pieces 52b extending substantially in parallel. The holding piece 52b extends on both sides of the connecting piece 52a as a boundary, and is curved so as to be centered on an imaginary line connecting the middle of the pair of attachment portions 51 (support plate portions 51c). It is formed in an arc shape (curved so that the mounting portion is on the inside). One end of the pair of holding pieces 52b is integrally connected by a bridging piece 52c. The holding piece 52b of the holding portion 52 is made of an elastically deformable flexible member such as synthetic resin.

  The distance between the pair of attachment portions 51 is set slightly larger than the width dimension of the main blade 34, and the distance between the pair of holding pieces 52b is shorter than the width dimension of the main blade 34. The interval is set such that two or three fingers are inserted between the holding pieces. Therefore, the stripped coating is accommodated between the pair of attachment portions 51, and the periphery is held by the pair of holding pieces 52b.

  The pair of holding pieces 52b is formed in an arc shape having an inner surface corresponding to the diameter of the covered electric wire or having a radius of curvature that is somewhat larger than the diameter of the covered electric wire. It is provided over a range of circumferential angles. Further, the end of the holding portion 52 provided with the bridging piece 52c (side edge of the bridging piece 52c) is easily guided to the inside of the holding piece 52b by curving and stripping away from the main blade 34. doing.

  In order to attach such a sheath fall-off prevention tool 5 to the above-described wire sheath stripper 1, as shown in FIG. 1, bolts used to fix the side plate 32 and the auxiliary blade 35 to the base member 31. 39 is used to fix the mounting substrate portion 51b of the mounting portion 51 so as to overlap a part of the side plate 32, and the end portion (bridge piece 52c) of the holding portion 52 on the main blade side covers the outside of the main blade 34. A gap is formed between the bridging piece 52c and the cutting edge 34a of the main blade 34.

  Therefore, the holding portion 52 is curved so as to cover the outer side (front side) of the main blade 34 so that the covering can be received from the vicinity of the main blade 34 of the movable portion 3, and the peeled coating is applied to the pair of holding pieces. It can be held at 52b.

  In the above configuration, in order to peel off the covering of the intermediate portion of the covered electric wire 100 installed between the utility poles using the above-described electric wire covering peeling tool (the electric wire covering stripper 1 with the covering drop prevention tool 5 attached). As shown in FIG. 4, as in the prior art, the hooking portion 21 of the main body 2 of the wire covering stripper 1 is hooked on the portion of the covered wire 100 where the covering 100a is to be peeled off, and thereafter, the The eye handle 43 is rotated to advance the main shaft 41, and the movable part 3 is brought close to the hook part 21.

  Then, the covered electric wire 100 is clamped and clamped by the hook portion 21 and the movable portion 3, and the main blade 34 bites into the covering 100a of the electric wire 100 on the front side of the electric wire covering stripper 1, and the auxiliary blade 35 bites into the covering 100a of the electric wire 100 on both sides of the main blade 34 (FIG. 4A). Then, by rotating the wire sheath stripper 1 around the wire 100 in this state, the sheath 100a of the wire 100 is stripped with the width of the main blade 34, and the stripped sheath 100a is prevented from falling off as it is. It is guided to the inside of the holding piece 52b of the tool 5 and is accommodated in a space formed between the movable portion 3, the mounting portion 51, and the holding portion 52 while elastically deforming the holding piece 52b, and a pair of holding pieces 52b. The outer periphery is held (FIG. 4B). Therefore, the stripped coating 100a can be securely held by the coating drop-off prevention tool 5, and the possibility of dropping off can be eliminated.

  Thereafter, the eye handle 43 is rotated to rotate the main shaft 41, and the movable part 3 is moved away from the hooking part 21 so as to loosen the electric wire. The electric wire covering stripper 1 is removed from the electric wire, and the electric wire covering stripper is left as it is. The covering drop-off prevention tool 5 attached to the movable part 1 is lowered to the operator's hand.

  The coating 100a held by the coating drop-off prevention tool 5 is held at a predetermined interval in the width direction of the main blade (first blade body) 34 by the pair of holding pieces 52b, and is shown in FIG. In this way, if both sides of the covering drop-off prevention tool 5 are grasped by the thumb and the ring finger or the little finger, the index finger and the middle finger are put in the gap between the holding piece 52b and the holding piece 52b and the covering 100a is pressed, the holding piece 52b becomes The cover 100a can be removed from the holding portion 52 by elastic deformation.

  Therefore, in order to avoid the fall of the coating after stripping the coating 100a, the work of removing the coating stripped using another indirect stopcock tool such as an insulating jacket is unnecessary, and the work labor can be reduced. In addition, it is possible to improve work efficiency.

  Further, according to the electric wire covering / peeling tool to which the above-described covering / detaching prevention tool 5 is attached, the outside of the cutting edge of the main blade (first blade body) 34 connects the pair of holding pieces 52b of the covering / falling prevention tool 5 together. Since it is covered with the bridging piece 52c, the risk of accidental injury to the main blade (first blade body) 34 when carrying the covering drop prevention device 5 or removing the covering 100a is eliminated. It is also effective for prevention.

DESCRIPTION OF SYMBOLS 1 Electric wire covering stripper 3 Movable part 5 Coating fall-off prevention tool 21 Hook part 34 Main blade 35 Auxiliary blade 51 Attaching part 52b Holding piece 52c Cross-linking piece 100 Covered electric wire 100a Covering

Claims (3)

A hook part that hooks the covered electric wire, a movable part that sandwiches or opens the covered electric wire between the hook part by approaching and separating from the hook part, and a fixed part of the covered electric wire that is fixed to the movable part. First to third blades that can be cut into the sheath, and the first blade body is disposed such that a blade edge extends in parallel with an extending direction of the covered electric wire, and the second blade body is provided. And the third blade body is disposed on both sides of the first blade body, the blade edge is disposed so as to extend in a direction perpendicular to the extending direction of the covered electric wire, and the first to third blades are disposed. With the blade body biting into the sheath of the covered electric wire, the movable portion is rotated around the covered electric wire to peel off the sheath of the covered electric wire with a predetermined width, and the stripped sheath is removed. Stripping the wire covering to be discharged to the outside of the first blade body A coating falling off preventer for use in,
A pair of attachment parts fixed by fixing means on both sides of the movable part, and the first blade from the vicinity of the first blade body of the movable part provided integrally between the pair of attachment parts A pair of holding pieces that are curved so as to cover the outside of the body and that can hold the peeled coating, and the pair of holding pieces are spaced apart in the width direction of the first blade body. Provided ,
The pair of holding pieces are configured by a flexible member and are connected by a bridging piece extending in the width direction outside the cutting edge of the first blade body,
The outer part of the blade edge of the first blade body is covered with the bridging piece . The covering drop-off prevention tool according to claim 1, wherein the bridging piece is curved on the side opposite to the curving direction of the holding piece so as to be separated from the first blade body. A wire coating stripping tool comprising the coating stripping prevention device according to claim 1 or 2 attached to a wire coating stripping device.

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