JP2015177673A - Stripping tool for coating of electric wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stripping tool for coating of an electric wire that can perform steps ranging from installation thereof to a coated electric wire to stripping of coating by means of a single bar, strip the coating by simple operation, and reduce a movable range of the operation bar.SOLUTION: The stripping tool for coating of an electric wire comprises: a fixed part 2 comprising a hooked part 21 to be hooked on a coated electric wire; a movable part 3 that is approximated to/separated from the hooked part 21; an adjustment mechanism 4 that moves the movable part 3; first cutting means fixed to the movable part 3; and second cutting means that is fixed inside the hooked part 21 and fixed at a position shifted in phase by approximately 180 degrees from the first cutting means relative to a shaft core of the coated electric wire. The adjustment mechanism 4 is provided with: a main shaft 41 that is connected to the movable part 3 and installed in the fixed part 2 to be advanceably/retreatably threaded thereinto; a joint metal fitting 42 that can be connected to a tip part of an operation bar 110; and joint means 44 that disables relative rotation of the joint part in a state where the main shaft 41 is made closest to the joint metal fitting 42 and enables the relative rotation of the joint part in a state where the main shaft is separated from the joint part.

Description

  The present invention relates to a wire sheath stripper that is used when stripping a coating on an intermediate portion of an installed covered wire, and particularly relates to a wire sheath stripper that can reduce the movable range of an operating rod.

  In a covered electric wire installed between power poles, in order to attach a high-voltage underline connector or a grounding short circuit device, an operation of exposing the core wire by peeling off the covering of the covered electric wire is required at an intermediate portion of the covered 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. 5 shows an example of a conventional wire stripping device. The wire sheath stripping device 1 has a fixed portion 2 formed in a U-shape and a movable portion that moves up and down inside the fixed portion 2. It has the part 3 and the adjustment mechanism 4 which moves this movable part 3 up and down.

  The fixed part 2 is located at the upper part of the U-shape, is hooked to the hooked part 21 to be hooked on the covered electric wire, and is arranged to face the lower part of the hook part 21 and is located at the lower part of the U-shaped 22 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 91 is fixed to the side portion 23 of the fixed portion 2, and an eye bolt 92 is fixed to the tip of the auxiliary rod 91.

  The movable portion 3 is positioned between the hook portion 21 and the base portion 22 of the fixed portion 2 and is moved up and down by the adjusting mechanism 4. The movable portion 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 And an eye handle 94 having a ring hole 93 that is inserted in and engageable with a hook attached to the tip of the insulating operating rod.

  Therefore, by rotating the eye handle 94 of the adjusting mechanism 4, the main shaft 41 can be moved up and down with respect to the fixed portion 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 covered electric wire is fixed to the movable portion 3 over almost the entire width direction of the base member 31. Auxiliary blades (second and third) provided between the base member 31 and the side plate 32 on both sides of the blade 34 so as to be parallel to the side plate 32 (provided so as to be orthogonal to the covered electric wire). The blade body 35) is fixed.

  When the movable portion 3 approaches the hook portion 21 of the fixed portion 2 by the adjusting 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 portion 3 and the hook portion 21. It is set up to eat at the same time.

  Note that the main blade 34 is kept parallel to the covered electric wire positioned in the arc-shaped groove 21 a formed on the inner surface of the hook portion 21 at the upper portion of the movable portion 3, and the main blade 34 and the auxiliary blade 35 are covered with the covered electric wire. A guard 36 is provided to prevent interference with the core wire. 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 in 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 covered electric wire, The auxiliary blade 35 is prevented from inadvertently hitting the core wire.

  In order to remove the covering of the intermediate part 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 rod 91 is gripped by the indirect live wire gripping tool 101, and the hook portion 21 of the fixing portion 2 of the wire sheath stripper 1 is hooked on the portion where the sheath of the sheathed wire is to be stripped (FIG. 6A). Thereafter, the operator inserts the bind hammer 102 into the ring hole 93 of the eye handle 94 and operates the eye handle while pulling the bind hammer 102 downward so that the covered electric wire 100 does not come off the hook portion 21 in this state. 94 is rotated to move the main shaft 41 forward, and the movable portion 3 is brought close to the hook portion 21.

  Then, the covered electric wire 100 is clamped and clamped by the hook portion 21 and the movable portion 3. At this time, the main blade 34 is in a state of biting into the coating 100a of the covered electric wire 100 on the front side of the electric wire covering stripper, and the auxiliary blade 35 is bitten into the coating 100a of the covered electric wire 100 on both sides of the main blade 34. The main blade 41 is inserted into one of the eye handle 94 of the main shaft 41 and the eye bolt 92 of the auxiliary rod 91 and the wire sheath stripper 1 is rotated around the covered wire 100 by rotating the wire sheath stripper 1 around the sheathed wire 100. The covering 100a of the covered electric wire 100 can be peeled off with a width of 34 (FIG. 6B).

JP 2010-22182 A JP 2012-39750 A

  As described above, the conventional wire sheath stripper requires two operation rods of the indirect live wire gripping tool 101 and the bind hitting device 102 when attached to the overhead wire, and must have one operation rod in each hand. Therefore, the work effort is large.

  In addition, it is necessary to rotate the wire sheath stripper for stripping work, but since the auxiliary rod and the eye handle are at 90 degrees out of phase, it requires skilled skills to rotate well. Experience is required, and in order to turn the wire sheath stripper well, it is necessary to turn the operating rod greatly, and there is a risk of causing a ground fault by contacting the live part.

  The present invention has been made in view of such circumstances, and can be performed from one attachment rod to a covered electric wire (overhead wire) to stripping the coating with a single operation rod, and stripping the coating with a simple operation. The main object of the present invention is to provide a wire sheath stripper that can reduce the movable range of the operating rod and eliminate the risk of contact with the charging unit.

  In order to achieve the above object, an electric wire covering stripper according to the present invention includes a fixed portion having a hook portion to be hooked on a covered electric wire, and the hooking portion of the covered electric wire by approaching / separating the hook portion. A movable part that is sandwiched or opened between the movable part, an adjustment mechanism that moves the movable part, a first cutting means that is fixed to the movable part and that can be cut into the sheath of the covered electric wire, The sheath is fixed at a position that is approximately 180 degrees out of phase with the first notch means with respect to the axis of the covered wire that is fixed inside and sandwiched between the hooking portion and the movable portion. Second cutting means that can be cut into the sheath of the electric wire, and the fixed portion and the movable portion are moved to the covered electric wire in a state where the first and second cutting means are bitten into the sheath of the covered electric wire. Rotate around The covering of the coated electric wire is peeled off, and the adjusting mechanism is connected to the movable portion and can be connected to a main shaft attached to the fixed portion so as to be able to advance and retract, and a tip portion of the operating rod. The joint portion, the main shaft and the joint portion are connected so as to be relatively displaceable with respect to the axial direction of the main shaft, and the shaft center of the covered electric wire is sandwiched between the hook portion and the movable portion. Coupling means for rotatably connecting the joint part relative to the main shaft on a virtual plane perpendicular to the axis, the coupling means comprising: an axis of an operating rod connected to the joint part; There is provided a regulating mechanism that regulates the rotation of the joint on the virtual plane when the spindle and the joint are brought closest to each other with the axis of the spindle substantially parallel to each other. It is characterized by

  Therefore, the operation rod is connected to the joint portion, and the shaft centers of the main shaft and the joint portion are made substantially horizontal and closest to each other so that the relative rotation is impossible. In this state, the fixed portion is covered with the operation wire. The hook is hooked on the covered wire, the operating rod is rotated around its own axis as it is, the movable portion is brought close to the hook, and the covered wire is sandwiched between the hook and the movable portion, The first and second cutting means are in a state of being bitten into the covering of the covered electric wire. After that, the operation rod is released from the restriction by the pulling restriction mechanism, and the joint portion can be rotated relative to the main shaft on the virtual plane perpendicular to the axis of the covered wire, and the operation rod is moved on the virtual surface. The fixed portion and the movable portion are swung to rotate around the covered electric wire, and the covering of the covered electric wire is peeled off.

  At this time, since the first notch means and the second notch means are provided at a position where the phase is shifted by about 180 degrees with respect to the axis of the covered electric wire (position where the line is symmetrical), the joint portion The sheath is stripped over the entire circumference by operating the operating rod from a position directly under the covered wire and rotating the main shaft about 90 degrees to the left and right sides respectively about the axis of the covered wire. Therefore, the movable range of the operation rod can be reduced.

  Here, the joint means is provided at an end of the main shaft, and is provided at a tie rod end composed of a pair of leg portions and a head portion connecting the leg portions, and at the joint portion, and between the leg portions. A knuckle arm to be inserted, a long hole extending in the axial direction of the main shaft is formed in the leg portion of the tie rod end, and a locking pin is provided on the knuckle arm to be slidably locked in the long hole. The restricting mechanism may be configured by forming an uneven surface on the inner side of the head of the tie rod end and forming an uneven surface meshable with the uneven surface at the tip of the knuckle arm. Good.

  With such a configuration, when the axis of the operating rod is substantially parallel to the axis of the main shaft and the main shaft and the joint portion are brought closest to each other, the uneven surface and knuckle formed inside the head portion of the tie rod end The uneven surface formed at the tip of the arm meshes with each other to form a relatively non-rotatable state, and when the joint is moved away from the main shaft, it is formed inside the head of the tie rod end. The meshed state between the uneven surface and the uneven surface formed at the tip of the knuckle arm is released, and the knuckle arm disposed between the leg portions can be rotated about the locking pin.

  In order to realize the above-described configuration, the operation rod is a common operation rod in which a pin protruding radially is formed at the tip, and the joint portion is formed with an engagement groove that can be engaged with the pin. It is good also as a twist lock type joint metal fitting made.

  Moreover, each of the 1st and 2nd cutting means is arrange | positioned at the both sides of the 1st blade body arrange | positioned so that a blade edge may extend in parallel with the extension direction of the said covered electric wire, and the said 1st blade body In addition, it is desirable to include second and third blade bodies arranged so that the blade edge extends in a direction orthogonal to the extending direction of the covered electric wire.

  As described above, according to the wire sheath stripper according to the present invention, it is possible to perform from the attachment to the sheathed wire to the stripping of the sheath with only one operation rod, and have a plurality of operation rods. Since it is not necessary, it is possible to greatly reduce work labor.

  Also, in the work of stripping the sheath, it is possible to strip the sheath by operating the operating rod from the state directly under the sheathed wire so that the main shaft is rotated in the range of about 90 degrees to the left and right sides. Compared to the conventional case, the cover can be peeled off with a simple operation, the movable range of the operating rod can be reduced, and the risk of causing a ground fault by touching the charged part is reduced. Is possible.

  Furthermore, in a state where the hooking portion of the fixing portion is hooked on the covered electric wire, the second cutting means can bite into the covering of the covered electric wire, so that the fixing portion is displaced laterally from the intended location of the covered electric wire. Nothing will happen.

1A and 1B are views showing a wire sheath stripper according to the present invention, in which FIG. 1A is a side view thereof, and FIG. 1B is an exploded perspective view showing joint means for connecting the main shaft and the joint portion of FIG. FIG. FIG. 2 is a front view showing the wire sheath stripper according to the present invention. FIG. 3 is a diagram showing a process of stripping the coating of the coated wire using the wire coating stripper according to the present invention, (a) is a diagram showing a state of approaching the coated wire, and (b) is a coated wire. It is a figure which shows the state which made the blade body bite into the coating | cover of. FIG. 4 is a diagram showing a process of stripping the sheath of the covered wire using the wire sheath stripper according to the present invention. FIG. 4 (a) is a diagram showing a case where the wire sheath stripper is rotated about 90 degrees in one direction. It is a figure which shows the operation which peels off the half of the coating | cover of an electric wire, (b) is a figure which shows the operation which rotates an electric wire covering stripper about 90 degree | times to a reverse direction, and strips off the remaining coating | covering of a covered electric wire. 5A and 5B are diagrams showing a conventional wire sheath stripper, in which FIG. 5A is a front view thereof, and FIG. 5B is a side view thereof. FIG. 6 is a diagram for explaining an operation of stripping the sheath of the covered wire using a conventional wire sheath stripper, and FIG. 6A is a diagram illustrating a case where the wire sheath stripper is hooked on the sheathed wire and the sheathed wire is used as a hooking portion. The figure which shows operation which clamps with a movable part, (b) is a figure which shows operation which rotates the circumference | surroundings of a covered electric wire stripping device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2, the wire sheath stripper 1 includes a fixed portion 2 formed in a U-shape, a movable portion 3 that moves up and down inside the fixed portion 2, and a movable portion 3 that moves up and down. And an adjusting mechanism 4 to be configured.

  The fixing part 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 part of the hook part 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 22.

  The hook portion 21 is formed with an arc-shaped groove 21a 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). In addition, in the side part 23 of the fixing | fixed part 2, the auxiliary | assistant stick | rod extended conventionally in the direction opposite to the extension direction of the hook part 21 or the base part 22, and the eyebolt provided in the front-end | tip are removed. .

  The movable portion 3 is located between the hook portion 21 and the base portion 22 of the fixed 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 adjustment mechanism 4 is rotatably connected to the lower end surface of the base member 31 of the movable portion 3, 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. The main shaft 41, a joint fitting 42 that can be connected to the tip of the operation rod 50, and a joint means 44 that connects the main shaft 41 and the joint fitting 42.

  The joint fitting 42 is a twist lock type that allows the distal end portion of the common operation rod 110 to be detachable, and is formed in a bottomed cylindrical shape with an open base end side. A substantially T-shaped guide groove 42a for introducing a pair of locking pins 111 projecting in the radial direction of the distal end portion of the common operation rod 2 is formed on the circumferential surfaces opposite to each other of the cylindrical portion. A locking recess 42b for twist locking the locking pin 111 is formed at the end of the guide groove 42a.

  The joint means 44 includes a tie rod end 45 provided at the end of the main shaft 41 and a knuckle arm 46 provided at the upper end of the joint fitting 42 and connected to the tie rod end 45. The tie rod end 45 is a U-shaped member composed of a pair of leg portions 45a and a head portion 45b connecting the leg portions 45a, and a groove 45c for inserting the knuckle arm 46 is formed between the pair of leg portions 45a. Is formed. Each leg portion 45a is formed with a long hole 45d extending in the axial direction of the main shaft 41 at the same position, and the inner side of the head 45b is formed in an arc shape, and this arc-shaped inner surface is formed in the circumferential direction. The uneven surface 45e is formed with unevenness.

  On the other hand, the knuckle arm 46 is formed in a plate shape protruding in the axial direction from the top of the joint fitting 42, and is slidably inserted into the groove 45c between the leg portions 45a. . On both side surfaces of the knuckle arm 46, locking pins 46a that are slidably locked in the elongated holes 45d are provided so as to project at right angles to the side surfaces, and the tip of the knuckle arm 46 is formed in an arc shape. The arcuate outer peripheral surface is an uneven surface 46b in which unevenness is formed in the circumferential direction so as to be able to mesh with the uneven surface 45e of the head 45b.

  Further, the shaft center of the operating rod connected to the joint fitting 42 and the shaft center of the main shaft 41 are substantially aligned (substantially parallel) with the end of the long hole 45d close to the head of the tie rod end 45. When the stop pin 46a is located, that is, when the main shaft 41 and the joint fitting 42 are brought closest to each other, the concave / convex surface 45e of the tie rod end 45 and the concave / convex surface 46b of the knuckle arm 46 are engaged with each other, so 42 (the tie rod end 45 and the knuckle arm 46) cannot be rotated relative to each other, and the locking pin 46a is located at the end of the long hole 45d away from the head 45b of the tie rod end 45, that is, the main shaft 41 and the joint When the metal fitting 42 is farthest away, the uneven surface 45e of the tie rod end 45 and the uneven surface 46b of the knuckle arm 46 are engaged. State is canceled, wherein the axis of the main shaft 41, and becomes rotatable about the engaging pin 46a in the leg portion 45a and a plane parallel to a pair of tie rod end 45.

  Therefore, the movable portion 3 can move the main shaft 41 up and down relative to the fixed portion 2 by connecting the tip end portion of the common operation rod 110 to the joint fitting 42 and rotating it, and is connected to the upper portion of the main shaft 41. The base member 31 provided can be moved toward and away from the hook portion 21 while restricting the separation from the side portion 23 of the fixed portion 2 by the back bar 40. Further, the surface parallel to the leg portion 45a forming a pair of the tie rod ends 45 is perpendicular to the axis of the covered electric wire sandwiched between the hook portion and the movable portion, and in this state, the common operation rod 110 is used. When the joint fitting 42 is moved away from the main shaft 41, the engagement state between the concavo-convex surface 45e of the tie rod end 45 and the concavo-convex surface 46b of the knuckle arm 46 is released, and the imaginary surface perpendicular to the axis of the covered electric wire is released. Thus, the joint portion can be rotated relative to the main shaft, and the common operation rod 110 can be pushed up so as to rotate the fixed portion 2 and the movable portion 3 around the covered electric wire.

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

  Further, the fixed portion 2 is formed in a portion near the side portion 23 of the hook portion 21 with the same length as the movable side main blade 34, and a fixed side main blade (fixed) parallel to the movable side main blade 34. Side first blade body) 24 is fixed by screws (not shown). Further, on both sides of the fixed side main blade 24, fixed side auxiliary blades (fixed side second and third blade bodies) 25 which are parallel to the side plate 32 are fixed to the hook portion 21 with screws (not shown). Yes.

  The movable-side main blade 34 and the fixed-side main blade 24, and the movable-side auxiliary blade 35 and the fixed-side auxiliary blade 25 are respectively against the axis of the covered electric wire sandwiched between the hook portion 21 and the movable portion 3. Thus, it is fixed at a position that is approximately 180 degrees out of phase, that is, a position that is substantially symmetrical with respect to the axis of the covered electric wire, and is provided at a position that can be cut into the covering of the covered electric wire.

  The main blades 24, 34 and the auxiliary blades 25, 35 are formed in a plate shape, and the movable side main blade 34 and the movable side auxiliary blade 35 provided in the movable portion 3 are on the sides directed to the hook portion 21. The blade edge is directed, and the main blade 34 extends between the pair of auxiliary blades 35 so that the blade edge is parallel to the extending direction of the covered electric wire sandwiched between the hook portion 21 and the movable portion 3. The auxiliary blade 35 is provided such that the blade edge is orthogonal to the covered electric wire.

  Further, the fixed-side main blade 24 and the fixed-side auxiliary blade 25 provided in the fixed portion 2 are pointed toward the side directed to the movable portion 3, and the main blade 24 is interposed between the pair of auxiliary blades 25. The auxiliary blade 25 is provided so that the blade edge is parallel to the extending direction of the covered electric wire that is stretched and the blade edge is sandwiched between the hook portion 21 and the movable portion 3, and the auxiliary blade 25 is perpendicular to the covered electric wire. It is provided as follows.

  The movable side main blade 34 and the movable side auxiliary blade 35 are installed so as to bite into the sheath of the covered electric wire on the side away from the side portion 23 when the movable portion 3 approaches the hook portion 21 by the adjusting mechanism 4. Yes. Further, the fixed-side main blade 24 and the fixed-side auxiliary blade 25 are covered when the hook portion 21 is hooked on the covered electric wire, or when the common operation rod 110 is pulled downward by hooking the hook portion 21 on the covered electric wire. It is installed so that it may bite into the covering of the electric wire at the side close to the side portion 23 simultaneously.

  Reference numeral 36 denotes a guard 36 provided at a position corresponding to both longitudinal ends of the main blade 34 of the movable portion 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, the main blades 24 and 34 can be covered even when the movable part 3 is arranged from the portion without the covering of the covered wire to the portion with the covering. The main blades 24 and 34 and the auxiliary blades 25 and 35 are prevented from interfering with the core wire of the covered electric wire while being kept parallel to the electric 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. 110 is attached so that the common operation rod 110 is rotated to move the movable part 3 away from the hooking part 21, and the covered electric wire 100 can be inserted between the tip part 21 b of the hooking part 21 and the movable part 3. Form.

  Then, the common operation rod 110 is brought close to the fixed portion 2 to bring the main shaft 41 and the joint fitting 42 closest to each other, and the uneven surface 45e formed on the inner side of the head 45b of the tie rod end 45 and the outer surface of the tip of the knuckle arm 46 are placed. The formed concavo-convex surface 46b is engaged with each other to form a relatively non-rotatable state, and the hook portion 21 of the fixed portion 2 is approached to the covered electric wire 100 with the common operation rod 110 in this state.

  At this time, since the main shaft 41 and the joint fitting 42 are in a non-rotatable state, even when the common operation rod 110 is tilted when approaching the covered electric wire 100, the inclination of the fixed portion with respect to the common operation rod is kept constant. Thus, the fixing portion does not rotate, so that it is not difficult to attach the hook portion 21 to the covered electric wire.

Then, by inserting the covered electric wire 100 from the opening of the fixed portion 2 and hooking the hook portion 21 on the covered electric wire 100, the fixed side main blade 24 and the fixed side auxiliary blade 25 are covered with the covered electric wire. It becomes a state that has been bitten.
In this state, if the common operation rod 110 is rotated to move the movable part 3 forward toward the hooking part 21, the movable main blade 34 and the movable auxiliary blade 35 bite into the covering of the covered electric wire 100, The electric wire 100 has blades (fixed-side main blade 24, fixed-side auxiliary blade 25, movable-side main blade 34, movable-side auxiliary blade 35) at two positions that are substantially 180 degrees out of phase (two positions that are substantially line-symmetric). ) Bites into the coating (FIG. 3B). In this state, the main shaft 41 and the common operation rod 110 are located directly under the covered electric wire 100 and the fixed portion 2.

  Thereafter, the common operation rod 110 is moved away from the fixed portion 2 (main shaft 41) to separate the main shaft 41 and the joint fitting 42, and the uneven surface 45e and the knuckle arm 46 formed inside the head 45b of the tie rod end 45 are separated. The engagement state with the concavo-convex surface 46b formed on the outer surface of the tip of the knives is released, and the knuckle arm 46 disposed between the leg portions 45a can be rotated around the locking pin 46a.

  And the direction of the leg part 45a of the tie rod end 45 is adjusted so that it may become parallel to the virtual surface perpendicular | vertical with respect to the covered electric wire 100, and as shown in FIG. The common operation rod 110 is operated so that the fixing portion 2 is rotated around the covered electric wire 100 in the direction to peel off the covering (counterclockwise in the drawing), and the joint metal fitting 42 reaches the same position as the covered electric wire 100. Push up. In this state, the fixed portion 2 and the movable portion 3 are rotated by approximately 90 degrees, so that the fixed-side main blade 24 and the movable-side main blade 34 and the fixed-side auxiliary blade 25 and the movable-side auxiliary blade 35 are approximately 180 degrees. The coating is peeled off over a range of approximately 90 degrees at two positions that are out of phase.

  Thereafter, the common operation rod 110 is pulled down, and the fixing portion 2 is rotated about the covered electric wire 100 to the opposite side (clockwise in the drawing) to the side rotated earlier with respect to the covered electric wire 100 (FIG. 4B). )). In this rotation operation, the main blades (fixed side main blade 24, movable side main blade 34) and auxiliary blades (fixed side auxiliary blade 25, movable side auxiliary blade 35) are rotated in the direction opposite to the direction in which the coating is stripped. As a result, the coating is not peeled off, and it is idle. Then, after rotating the joint fitting 42 to a position higher than the position equivalent to that of the covered electric wire 100 (pushing up the common operation rod 110), the common operation rod 110 is peeled off (counterclockwise in the drawing). ) To hook the main blade (fixed side main blade 24, movable side main blade 34) on the remaining coating, and strip the coating.

  Therefore, according to this electric wire covering stripper 1, it is possible to perform from the attachment to the covered electric wire 100 to the stripping of the covering with only one common operation rod 110, and it is not necessary to have a plurality of operation rods. For this reason, it is possible to significantly reduce work labor.

  Further, in the work of stripping the coating, it is possible to strip the coating if the common operation rod 110 is rotated about 90 degrees to the left and right sides from the state immediately below the coated electric wire 100. The cover can be peeled off with a simple operation, the movable range of the common operation rod 110 can be reduced, and the possibility of causing a ground fault by touching the charging unit can be reduced. Become.

  Furthermore, in a state where the hook portion 21 of the fixed portion 2 is hooked on the covered electric wire 100, the fixed-side main blade 24 and the fixed-side auxiliary blade 25, which are the second cutting means, are bitten into the covering of the covered electric wire 100. Therefore, there is no possibility that the fixing portion 2 is laterally displaced from the intended location of the covered electric wire 100.

Claims (4)

A fixed part provided with a hook part for hooking on the covered electric wire, a movable part for holding or releasing the covered electric wire between the hook part by approaching / separating the hook part, and an adjustment for moving the movable part A mechanism, a first cutting means fixed to the movable portion and capable of being cut into the sheath of the covered electric wire, and fixed between the hook portion and sandwiched between the hook portion and the movable portion. The first cutting means is fixed at a position that is approximately 180 degrees out of phase with the first cutting means, and the second cutting means is capable of cutting into the covering of the covered electric wire. In a state where the first and second cutting means are bitten into the covering of the covered electric wire, the fixed portion and the movable portion are rotated around the covered electric wire to peel off the covering of the covered electric wire,
The adjusting mechanism includes a main shaft coupled to the movable portion and attached to the fixed portion so as to be able to advance and retreat, a joint portion to which a tip end portion of an operation rod can be coupled, the main shaft and the joint portion, On the imaginary plane perpendicular to the axis of the covered electric wire sandwiched between the hooking portion and the movable portion. A coupling means for rotatably connecting the portion relative to the main shaft,
The joint means is configured so that the virtual axis of the joint portion is obtained when the main shaft and the joint portion are brought closest to each other in a state where the shaft center of the operation rod connected to the joint portion and the shaft center of the main shaft are substantially parallel to each other. An electric wire sheath stripping device, characterized in that a regulating mechanism for regulating rotation on the surface is provided. The joint means is provided at an end of the main shaft, and is provided at a tie rod end composed of a pair of leg portions and a head portion connecting the leg portions, and is provided at the joint portion and is inserted between the leg portions. A knuckle arm, a long hole extending in the axial direction of the main shaft is formed in the leg portion of the tie rod end, and a locking pin that is slidably locked in the long hole is provided in the knuckle arm.
2. The control mechanism according to claim 1, wherein an uneven surface is formed inside a head portion of the tie rod end, and an uneven surface that can mesh with the uneven surface is formed at a tip portion of the knuckle arm. The wire sheath stripper according to 1.   The operation rod is a common operation rod in which a pin projecting in the radial direction is formed at a distal end portion, and the joint portion is a twist lock type joint fitting in which an engagement groove that can be engaged with the pin is formed. The wire sheath stripper according to claim 1 or 2, characterized in that   Each of the first and second cutting means is disposed on both sides of the first blade body and the first blade body disposed such that the blade edge extends in parallel with the extending direction of the covered electric wire. The blade edge | tip is provided with the 2nd and 3rd blade body arrange | positioned so that a blade edge may extend in the direction orthogonal to the extension direction of the said covered electric wire. Wire sheath stripper.

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