JP2017184334A - Tip end tool for polishing electric wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tip end tool for electric wire polishing capable of polishing an electric wire by simple operation.SOLUTION: A tip end tool 10 can be attached to a pair of grip arms 9a and 9b opening/closing. The tip end tool 10 is equipped with bodies 1 and locking means 2. One of the bodies 1 is equipped with a first projecting piece 11 and a C-shaped moving member 3. The moving member 3 is formed with an abutting surface 31f capable of freely abutting on an outer periphery of an electric wire, at a tip end edge. The other of the bodies 1 is equipped with a second projecting piece 12, a first electric wire introducing member 4, and a moving bar 51. The first electric wire introducing member 4 has a notch groove 41d capable of introducing core wire Wc from an outer peripheral direction. On an inner wall of the notch groove 41d, a brush Br is implanted. While the pair of the grip arms 9a and 9b is closed, the core wire Wc can be moved to a deep side of the notch groove 41d. While the pair of the grip arms 9a and 9b is opened, the core wire Wc can be moved to an opening side of the notch groove 41d by being pushed with the moving bar 51.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electric wire polishing tip tool. In particular, a tip tool that can be attached to and detached from a pair of openable and closable gripping arms provided at the tip of an insulation operating rod for indirect hot wire construction, and that polishes the core wire of the wire with the insulation coating removed Related to the structure.

  It is known that there are two types of hot line work for performing high-voltage distribution lines without power interruption: direct hot line method and indirect hot line method. In the direct hot wire construction method, workers wear protective equipment such as high-pressure rubber gloves and perform power distribution work by directly touching the high-voltage distribution line that is energized. On the other hand, the indirect hot wire method allows the operator to perform power distribution work without directly touching the high-voltage power distribution line that is energized using an insulating operation rod (hot stick) or the like.

  In general, an insulating operation rod is composed of a long operation rod and a power distribution work tool (hereinafter referred to as a tip tool) attached to the tip of the operation rod. And the insulation operating rod is comprised so that a front-end tool can be replaced | exchanged according to the work objectives, such as holding | griping or cutting | disconnecting a high voltage distribution line.

  As an insulating operation rod for distributing such a remotely arranged high-voltage distribution line, an insulating operation rod that can be attached to and detached from the distal end portion of a tool for different purposes, a so-called “common operation rod” is known. . In addition to the operation of winding the bind wire around the electric wire using the common operation rod, the operation of polishing the core wire of the electric wire from which the insulation coating has been peeled is performed.

  5A and 5B are diagrams showing the configuration of a wire polishing tip tool according to the prior art, FIG. 5A is a front view of the wire polishing tip tool, and FIG. 5B is a right side of the wire polishing tip tool. FIG. FIG. 6 is a perspective view showing the configuration of a conventional tool for polishing an electric wire according to the prior art, and is a state diagram in which the core wire of the electric wire with the insulating coating peeled is polished.

  Referring to FIG. 5 or FIG. 6, a conventional wire polishing tip tool (hereinafter abbreviated as “wire brush”) 8 is constituted by a C-shaped frame 81 and a brush 82 composed of a plurality of linear bodies. . Brushes 82 are densely planted on the inner wall of the frame 81.

  Referring to FIG. 5 or FIG. 6, the frame 81 includes a disk-shaped star seat 8 b at one end. A male threaded portion 7s is provided in a twist lock-type connection fitting 70 provided at the tip of the common operation rod 7. The male threaded portion 7s is inserted into the center of the chrysanthemum portion 8b, and the wing nut 7n is fastened to the male threaded portion 7s. Thus, the electric wire brush 8 can be fixed at an arbitrary angle with respect to the direction in which the common operation rod 7 extends (see FIG. 6).

  With reference to FIG. 6, the outer periphery of the core wire Wc of the electric wire W from which the insulating coating Wi has been peeled can be polished by gripping the handle portion of the common operation rod 7 and moving the electric wire brush 8 up and down and left and right. Thereby, the residue of the insulation coating Wi adhering to the surface of the core wire Wc can be removed.

  In the state shown in FIG. 6, a so-called stray link tongue (not shown) is provided in the vicinity of the core wire Wc so that the electric wire W can be reliably held and the holding state of the electric wire W can be maintained.

  The tip tool for electric wire polishing as shown in FIG. 5 or 6 is also disclosed in, for example, the prior art of Patent Document 1.

  On the other hand, there is also disclosed a wire polishing tip tool that is detachably attached to a pair of opening and closing gripping arms provided at a tip portion of an insulating operation rod (insulating Yatco) for indirect hot wire construction (see, for example, Patent Document 2).

JP 2008-125294 A (FIG. 9) Japanese Patent Laying-Open No. 2015-27153

  By the way, the electric wire brush 8 according to the prior art shown in FIG. 5 or FIG. 6 can polish the upper side of the core wire Wc by pulling down the common operation rod 7 and swinging the handle portion of the common operation rod 7. By pushing up the common operation rod 7 and swinging the handle portion of the common operation rod 7, the lower side of the core wire Wc can be polished. Then, by repeating these operations in the direction (left-right direction) in which the core wire Wc extends, the core wire Wc can be polished over the area where the core wire Wc is exposed.

  In the electric wire brush 8 according to the prior art shown in FIG. 5 or FIG. 6, the brush 82 implanted on the inner wall of the upper jaw portion 81a and the brush 82 implanted on the inner wall of the lower jaw portion 81b are separated (FIG. 5 ( B)), there is a problem that considerable work time and labor are required to repeat the lifting and lowering operation of the wire brush 8. In particular, in the case of a small-diameter electric wire as compared with a large-diameter electric wire, the moving distance of the electric wire brush 8 is relatively long, so that there is a problem that more work time and labor are required.

  FIG. 7 is a perspective view showing a configuration of a tip tool for polishing an electric wire according to another conventional technique. Note that FIG. 7 of the present application corresponds to FIG.

  FIG. 8 is a front view of an insulating operation rod for holding a high-voltage distribution line or the like. FIG. 9 is an enlarged front view of the distal end portion of the insulating operation rod shown in FIG. FIG. 10 is a left side view of FIG.

  Referring to FIG. 7, another conventional wire polishing tip tool (hereinafter abbreviated as “tip tool”) 6 includes a pair of block-shaped adapters 61 and 61. One adapter 61 is fixed to a gripping arm 9 a provided at the distal end portion of an insulating operation rod (hereinafter referred to as an insulating jacket) 9. The other adapter 61 is fixed to a gripping arm 9 b provided at the distal end portion of the insulating jacket 9.

  Referring to FIG. 8, the insulating jacket 9 includes a long operation rod 91 and a grip portion 92. Further, the insulating yoke 9 is provided with an operating rod 93. The grip portion 92 is attached to the distal end portion of the operation rod 91.

  Referring to FIG. 8 or FIG. 9, the grip portion 92 is composed of a pair of curved grip arms 9a and 9b that open and close. One gripping arm 9a is a fixed arm with a base end fixed, and the other gripping arm 9b rotates around a rotation shaft 9c provided at the base end of one gripping arm 9a. It is a movable arm.

  Referring to FIG. 8, the operation bar 93 is held along the operation bar 91. The distal end portion of the operating rod 93 is rotatably connected to the other gripping arm 9b. And if the operating lever 94 provided in the base end part of the action | operation stick | rod 93 is operated, the other holding arm 9b can be opened and closed with respect to one holding arm 9a. The insulating yoke 9 is composed of an insulating plastic pipe or the like at the intermediate portion between the operation rod 91 and the operating rod 93, and ensures insulation so as to be suitable for the indirect hot wire method.

  Referring to FIG. 8, when the operation lever 94 is grasped and the operation lever 94 is brought close to the operation rod 91, the other gripping arm 9b can be closed with respect to the one gripping arm 9a. When the operation lever 94 is released, the other holding arm 9b can be opened with respect to one holding arm 9a by the force of a spring (not shown) connected to the operation lever 94. FIG. 8 or FIG. 9 shows a state in which the other gripping arm 9b is opened to the maximum with respect to one gripping arm 9a.

  Referring to FIG. 9 or FIG. 10, one gripping arm 9a projects a tapered gripping claw 91a. The gripping claw 91a forms a gripping surface 90a. The gripping surface 90a is formed substantially in parallel along the centrifugal direction from the rotation center of the rotation shaft 9c. Similarly, the other gripping arm 9b projects a tapered gripping claw 91b. The gripping claw 91b forms a gripping surface 90b. The gripping surface 90b is disposed with a predetermined opening angle with the gripping surface 90a. With reference to FIG. 8 or FIG. 9, when the operation lever 94 is gripped, the gripping surface 90b can be brought close to the gripping surface 90a.

  The insulating jacket 9 shown in FIGS. 8 to 10 has a structure in which a high-voltage distribution line or the like disposed at a high place can be gripped by a pair of gripping claws 91a and 91b.

  Referring to FIG. 7 or FIG. 8, the pair of adapters 61 and 61 have gripping surfaces 61a and 61a that can be in close contact with each other. Further, the adapter 61 opens the hole 61h on the side opposite to the gripping surface 61a. A gripping claw 91a or a gripping claw 91b protruding in the centrifugal direction from the pair of gripping arms 9a and 9b can be inserted into the hole 61h (see FIG. 7 or FIG. 9).

  Referring to FIG. 7 or FIG. 8, the adapter 61 is provided with an engagement pin 61p on the side opposite to the gripping surface 61a. The engaging pin 61p has a tip projecting into the hole 61h. When the engaging pin 61p is pulled, the tip portion thereof is retracted from the hole 61h, and the gripping claw 91a or the gripping claw 91b can be inserted into the hole 61h (see FIG. 7 or FIG. 9).

  On the other hand, referring to FIG. 7 or FIG. 8, when the engagement pin 61p is released, the tip of the engagement pin 61p is moved by the urging force of a tension coil spring (not shown) accommodated in the engagement pin 61p. It can protrude into the hole 61h, and the gripping claw 91a or the gripping claw 91b can be fixed (see FIG. 7 or FIG. 9).

  Referring to FIG. 7, the adapter 61 has a plate-like portion 61b along the gripping surface 61a. The plate-like portion 61b protrudes toward the space surrounded by the pair of gripping arms 9a and 9b. The plate-like portion 61b has an arc portion 61c formed in a semicircular arc shape at the tip portion. The arc portion 61c has a brush Br made of a plurality of linear bodies planted on the inner wall.

  Referring to FIG. 7, the core wire Wc is introduced from one of the arc portions 61 c or the arc portion 61 c of the other arc portion 61 c from the outer peripheral direction, and the insulating jacket 9 is operated so that the pair of adapters 61. By closing 61, the core wire Wc can be closed by the pair of arc portions 61c and 61c. And the core wire Wc can be polished by operating the insulating yoke 9.

  The tip tool for electric wire polishing according to Patent Document 2 is capable of polishing an electric wire while the electric wire is securely held. However, the tip tool for electric wire polishing according to Patent Document 2 operates the insulating jacket 9 (see FIG. 8), and places a small-diameter core wire Wc in the outer circumferential direction on a small-diameter arc portion 61c located far (see FIG. 7). There is a problem that it is not easy to introduce from.

  There is a need for a wire polishing tip tool that can securely grip a small-diameter wire and polish the wire.

  Further, the tip tool for electric wire polishing according to Patent Document 2 is provided with an insulating jacket 9 so that the tip tool 6 moves along the axial direction of the electric wire W in a state where the pair of arc portions 61c and 61c hold the core wire Wc. It is said that the core wire Wc can be polished by the operation. However, there is a problem that manipulating the insulating yoke 9 so that the tip tool 6 moves along the axial direction of the electric wire W requires labor.

  There is a need for a wire polishing tip tool that can easily polish an electric wire with a simple operation. The above can be said to be the subject of the present invention.

  The present invention has been made in view of such a problem, and provides a wire polishing tip tool that can reliably grip a small-diameter electric wire and that can be easily polished by a simple operation. Objective.

  The inventor comprises a pair of tip tools that can be attached to and detached from a pair of opening and closing gripping arms provided at the tip portion of the insulating jacket, and one tip tool is a pair of contact surfaces that can contact the outer periphery of the electric wire. The other tip tool opens the wire to allow the wire to be introduced freely, and has a wire introducing member having a notch groove with a brush planted on the opposite surface, and the wire is discharged from the notch groove. A moving bar energized with a force to move in the direction to move, and when the opening and closing operation of the pair of gripping arms is repeated, the core wire can be polished easily by reciprocating inside the notch groove Based on the headline and this, it came to invent the following new tip tools for electric wire polishing.

  (1) The wire polishing tip tool according to the present invention can be attached to a pair of opening and closing gripping arms provided at the tip of an insulating operation rod in order to polish the core wire of an electric wire from which the insulation coating has been peeled, and is configured as a set. A wire polishing tip tool, a block-shaped tip tool body having a recessed portion into which a gripping claw protruding in a centrifugal direction from a pair of gripping arms can be freely inserted is attached to the bottom tool body, and the gripping claw Locking means capable of fixing the gripping claw from a surface opposite to the gripping surface, and the one end tool body includes a plate-like first projecting piece protruding on the side opposite to the opening surface of the recess, A C-shaped movable member that is connected to the first protrusion piece so as to be able to advance and retreat in a state of straddling the first protrusion piece, and has a pair of contact surfaces that can contact the outer periphery of the electric wire at the tip edge. The movable member urges the movable member to apply a force toward the first projecting piece. A biasing member, and the other tip tool body includes a plate-like second projecting piece projecting to the opposite side of the opening surface of the recess, and the first projecting surface from one surface of the second projecting piece. A first wire introduction member that protrudes toward the projecting piece and has a cutout groove that can be introduced from the outer circumferential direction in the middle portion, and is planted on the inner wall of the cutout groove, and comes into contact with the outer peripheral surface of the core wire A pair of a movable brush, a movable bar arranged movably in the notch groove, and a pair of sliding ends connected to the guide hole opened in the second projecting piece with one end fixed to the movable bar. A sliding bar, a bridging bar obtained by bridging the other ends of the slide shafts, one end locked to the bridging bar, the other end locked to the second projecting piece, and the moving bar A second urging member that urges a force to move toward the opening side of the notch groove, and closes the pair of gripping arms In the state, the core wire can be moved to the back side of the notch groove against the urging force of the second urging member, and when the pair of gripping arms are opened, the urging force is applied to the second urging member. Thus, the core wire can be moved to the opening side of the notch groove.

  (2) One of the tip tool bodies further includes a second wire introduction member that protrudes from the tip portion of the first projection piece toward the second projection piece, the inner surface of the second wire introduction member, It is preferable that the surface on the opposite side to the opening surface of the recess and the one surface of the first projecting piece constitute a recess that can introduce the electric wire from the outer peripheral direction.

  (3) The engaging means has a distal end portion that can protrude forward and backward from the inner wall of the concave portion, and an engagement pin that can come into contact with the gripping claw from a surface opposite to the gripping surface of the gripping claw, and the tip tool body It is preferable to have a coil spring that is held inside and urges the force of the engagement pin toward the gripping claw.

  (4) It is preferable that a pair of said front-end tool main body is formed in a rough surface, and has a holding surface which can hold an electric wire from an outer peripheral direction in an opposing surface.

  (5) It is preferable that the first urging member includes a compression coil spring.

  (6) It is preferable that the second urging member includes a tension coil spring.

  The wire polishing tip tool according to the present invention is composed of a pair of tip tool bodies detachably attached to a pair of opening and closing gripping arms provided at the tip portion of the insulating Yatco, and one tip tool body is in contact with the outer periphery of the wire. 1st electric wire introduction which has a movable member which formed a pair of free abutment surfaces in the tip edge, and the other tip tool body has a notch groove which opened an electric wire freely and planted a brush on the opposing surface A member and a moving bar biased with a force to move the wire in the direction of discharging the electric wire from the notch groove, and the core wire reciprocates in the notch groove when the pair of gripping arms are repeatedly opened and closed. Thus, the core wire can be easily polished.

It is a perspective view showing composition of a tip tool for electric wire polish by one embodiment of the present invention. It is a figure which shows the structure of the front tool for electric wire polishing by the said embodiment, FIG. 2 (A) is a perspective view of one front tool for electric wire polishing, FIG. 2 (B) is the front tool for one electric wire polishing. A principal part longitudinal cross-sectional view and FIG.2 (C) are principal part cross-sectional views of one tip tool for electric wire polishing. It is a front view which shows the principal part of the front tool for electric wire polishing by the said embodiment in a longitudinal section, and a pair of front tools for electric wire polishing was attached to a pair of holding arms in the state where a pair of holding arms were most opened. It is a state diagram. FIG. 4 is a front view showing a state change diagram of FIG. 3 in a state in which a pair of gripping arms are closed and a pair of wire polishing tips are closed. It is a figure which shows the structure of the front tool for electric wire polishing by a prior art, FIG. 5 (A) is a front view of the front tool for electric wire polishing, and FIG. 5 (B) is a right view of the front tool for electric wire polishing. . It is a perspective view which shows the structure of the tip tool for electric wire polishing by a prior art, and is a state figure which polishes the core wire of the electric wire which peeled insulation coating. It is a perspective view which shows the structure of the tip tool for electric wire polishing by another prior art. It is a front view of an insulation operation stick for grasping a high voltage distribution line. It is the front view which expanded the front-end | tip part of the insulation operating rod shown in FIG. FIG. 10 is a left side view of FIG. 9.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
[Configuration of tip tool for wire polishing]
Initially, the structure of the tip tool for electric wire polishing by one Embodiment of this invention is demonstrated.

  FIG. 1 is a perspective view showing the configuration of a wire polishing tip tool according to an embodiment of the present invention. FIG. 2 is a diagram showing the configuration of the tip tool for electric wire polishing according to the embodiment, FIG. 2 (A) is a perspective view of one tip tool for electric wire polishing, and FIG. 2 (B) is one electric wire polish. FIG. 2C is a cross-sectional view of a main part of one of the tip tools for polishing an electric wire.

  FIG. 3 is a front view showing the main part of the tip tool for electric wire polishing according to the above-described embodiment in a longitudinal section, and a pair of electric wire polishing tips for a pair of gripping arms in a state where the pair of gripping arms are most open. It is the state figure which attached the tool.

Figure 4 is a state change diagram of Fig. 3, closes the pair of grasping arms, a front view showing a state where the pair of wires polishing tip Engineering tool is closed.

  In addition, since the effect | action of the component which has the code | symbol same as the code | symbol used by the prior art is the same, description may be abbreviate | omitted below.

(overall structure)
1 to 4, an electric wire polishing tip tool (hereinafter abbreviated as a tip tool) 10 according to an embodiment of the present invention is associated with a block-shaped tip tool body (hereinafter abbreviated as a body) 1. Stop means 2 is provided.

(Configuration of tip tool body)
With reference to FIGS. 1 to 4, the main body 1 according to the embodiment can be attached to a pair of curved holding arms 9 a and 9 b that are opened and closed provided at the distal end portion of the insulating jacket 9 (see FIG. 8 or 9). Further, the main body 1 can hold a gripping object such as an electric wire W between a pair of gripping surfaces 10a and 10a facing each other (see FIG. 3 or FIG. 4). In addition, it is preferable to form rough surfaces, such as a twill eye knurl, in the holding surface 10a.

  Referring to FIG. 2 (B), the main body 1 opens the recess 11h on the side opposite to the gripping surface 10a. The recess 11h closes the side opposite to the opening. A gripping claw 91a or a gripping claw 91b that protrudes in the centrifugal direction from the pair of gripping arms 9a and 9b can be inserted into the recess 11h (see FIG. 3). That is, one main body 1 can be attached to one gripping claw 91a, and the other main body 1 can be attached to the other gripping claw 91b.

(Configuration of locking means)
Next, the configuration of the locking means 2 will be described. Since one main body 1 and the other main body 1 have the same locking means 2, the following description will be given on behalf of the locking means 2 provided on one main body 1.

  Referring to FIG. 2, the locking means 2 includes an engagement pin 21 and a coil spring 22. The engaging pin 21 includes a shaft portion 21s and a flange portion 21f. The shaft portion 21 s is accommodated in the cylindrical portion 2 p protruding from the outer wall of the main body 1. The tip of the shaft portion 21s protrudes from the inner wall of the recess 11h (see FIG. 2B). The flange portion 21f is in contact with the upper end edge of the cylindrical portion 2p.

  Referring to FIG. 2 (B), the coil spring 22 is wound around the outer periphery of the shaft portion 21s. The coil spring 22 is accommodated in the cylindrical portion 2p. One end portion of the coil spring 22 is fixed to the shaft portion 21s. The other end of the coil spring 22 is fixed to the inner wall of the cylindrical portion 2p. The coil spring 22 urges the force that the tip of the shaft portion 21s protrudes into the recess 11h.

  With reference to FIG. 2A or 2B, when the collar 21f is gripped and the engaging pin 21 is pulled up against the elastic force of the coil spring 22, the gripping claw 91a or the gripping claw 91b Can be accommodated in the recess 11h (see FIG. 3). Then, when the flange portion 21f is released, the distal end portion of the engaging pin 21 can be brought into contact with the gripping claws 91a or the gripping claws 91b from the surface opposite to the gripping surfaces 90a and 90b of the gripping claws 91a or 91b. The grip claw 91a or the grip claw 91b is provided with a recess 9d into which the tip of the engagement pin 21 enters (see FIG. 3 or FIG. 10).

  Referring to FIG. 2B or FIG. 2C, the shaft portion 21s protrudes the locking pin 21p in the centrifugal direction. On the other hand, a slit-shaped groove 21m for guiding the locking pin 21p in the axial direction of the shaft portion 21s is provided inside the cylindrical portion 2p.

  With reference to FIG. 2 (B) or FIG. 2 (C), when the collar portion 21f is gripped and the engagement pin 21 is pulled up, the locking pin 21p can be moved to a height exceeding the upper end edge of the cylindrical portion 2p. . When the engaging pin 21 is rotated in the outer peripheral direction, the locking pin 21p can be brought into contact with the upper end edge of the cylindrical portion 2p. Thereby, the state where the engaging pin 21 is pulled up can be maintained, and after the gripping claw 91a or the gripping claw 91b is accommodated in the recess 11h, the engaging pin 21 is rotated in the reverse direction, whereby the body 1 is gripped by the gripping claw 91a. Or it can fix to the holding claw 91b.

(Configuration of one tip tool body)
Next, the configuration of one main body 1 according to the embodiment will be described. 1 to 4, one main body 1 includes a plate-like first protruding piece 11 and a C-shaped movable member 3. Moreover, one main body 1 is provided with a compression coil spring 11s and a guide pin 11p that serve as a first urging member.

  Referring to FIG. 1 or FIG. 3 and FIG. 4, the first projecting piece 11 continuously projects from one main body 1 on the side opposite to the opening surface of the recess 11h. The movable member 3 includes a pair of flange pieces 3f and 3f and a web plate 3w. The pair of flange pieces 3f and 3f are arranged substantially in parallel with a predetermined interval. The web plate 3w joins the base end portions of the pair of flange pieces 3f and 3f.

  Referring to FIG. 1 or FIG. 3, the flange piece 3 f has a contact surface 31 f that can freely contact the outer periphery of the electric wire W at the tip edge. The pair of flange pieces 3 f and 3 f are arranged in a state of straddling both side surfaces of the first projecting piece 11.

  Referring to FIG. 4, one end of the guide pin 11p is fixed to the first projecting piece 11 by fixing means such as screwing. The guide pin 11p has a head portion 112 at the other end. The web plate 3w has a hole that fits in the shaft portion of the guide pin 11p at the center. That is, the movable member 3 is connected to the first projecting piece 11 so as to be able to advance and retreat, while its rotational movement is restricted by the first projecting piece 11.

  Referring to FIG. 3 or FIG. 4, the compression coil spring 11s is wound around the shaft portion of the guide pin 11p. One end of the compression coil spring 11 s is in contact with the web plate 3 w and the other end is in contact with the head 112. In the state shown in FIG. 3, the compression coil spring 11 s biases the web plate 3 w of the web plate 3 w of the movable member 3 toward the first projecting piece 11.

  When the first projecting piece 11 is moved toward the core wire Wc from the state shown in FIG. 3, the movable member 3 is pushed by the core wire Wc and relatively retracts. On the other hand, when the first projecting piece 11 is retracted from the core wire Wc, the movable member 3 can be returned to the original state by being biased by the compression coil spring 11s.

(Configuration of the other tip tool body)
Next, the configuration of the other main body 1 according to the embodiment will be described. Referring to FIG. 1, FIG. 3, and FIG. 4, the other main body 1 includes a plate-like second protruding piece 12 and a first electric wire introduction member 4. The other body 1 includes a moving bar 51, a pair of slide shafts 52 and 52, and a bridging bar 53. Further, the other main body 1 includes a tension coil spring 52s serving as a second urging member.

  Referring to FIG. 1 or FIG. 3 and FIG. 4, the second projecting piece 12 continuously projects from the other main body 1 on the side opposite to the opening surface of the recess 11h. The first electric wire introduction member 4 protrudes from one surface of the second protrusion 12 toward the first protrusion 11. Moreover, the 1st electric wire introduction member 4 has notched the groove 41d in the intermediate part. The core wire Wc can be introduced into the cutout groove 41d from the outer peripheral direction.

  Referring to FIG. 1 or FIG. 3, a brush Br made of a plurality of linear bodies is implanted on the inner wall of the cutout groove 41d. The brush Br can contact the outer peripheral surface of the core wire Wc.

  Referring to FIG. 1 or FIG. 3 and FIG. 4, the moving bar 51 is disposed so as to be movable in the notch groove 41d. One end of each of the pair of slide shafts 52 and 52 is fixed to the moving bar 51 (see FIG. 1). The slide shaft 52 is slidably connected to a guide hole opened in the second projecting piece 12. The bridging bar 53 bridges the other end portions of the pair of slide shafts 52 and 52.

Referring to FIG. 1 or FIG. 4, one end of the tension coil spring 52 s is locked to the central portion of the bridging bar 53. Further, the other end of the tension coil spring 52 s is locked to the second projecting piece 12. The coil spring 52s tension urges the moving force toward the opening of the travel bar 51 is notched groove 51 41 d.

  Referring to FIG. 4, when the pair of gripping arms 9a and 9b are closed, the core wire Wc is moved to the back side of the cutout groove 41d against the urging force of the tension coil spring 52s. On the other hand, when the pair of gripping arms 9a and 9b is opened from the state shown in FIG. 4, the core wire Wc can be moved to the opening side of the cutout groove 41d by being biased by the tension coil spring 52s.

  As described above, referring to FIG. 1 or FIG. 3 and FIG. 4, the tip tool 10 according to the embodiment implants the brush Br in conjunction with the opening / closing operation of the pair of gripping arms 9a and 9b. By reciprocating the core wire Wc inside the notch groove 41d, the thin core wire Wc can be easily polished.

(Configuration of second electric wire introduction member)
Next, the structure of the 2nd electric wire introduction member 13 by embodiment is demonstrated. Referring to FIG. 1 or FIG. 3 and FIG. 4, one main body 1 further includes a second electric wire introduction member 13. The second electric wire introduction member 13 protrudes from the tip of the first protrusion 11 toward the second protrusion 12.

  Referring to FIG. 1 or FIG. 3 and FIG. 4, one main body 1 has a recess 131. When the movable member 3 is retracted into the recess 131 by the electric wire W, the electric wire W can be introduced from the outer peripheral direction. The recess 131 includes an inner surface 13f of the second electric wire introduction member 13, a surface 10f opposite to the opening surface of the recess 11h, and one surface 11f of the first projecting piece 11 (see FIG. 2).

[Effect of cutting tool for wire polishing]
Next, the operation and effect of the tip tool 10 will be described while explaining the operation method of the tip tool 10 according to the embodiment.

  1 to 4, the tip tool 10 can be fixed with the engaging pin 21 by inserting the gripping claw 91a or the gripping claw 91b from the opening of the recess 11h (see FIG. 2A). The pair of tip tools 10 and 10 can hold an object to be gripped such as the insulated wire W between the gripping surfaces 10a and 10a facing each other (see FIG. 4).

  From the state shown in FIG. 3, when the operating lever 94 is grasped and the operating lever 94 is brought close to the operating rod 91 (see FIG. 8), the other tip tool 10 can be closed with respect to one tip tool 10. . That is, the other gripping arm 9b can be closed with respect to the one gripping arm 9a (see FIG. 4).

  When polishing the core wire Wc of the electric wire W from which the insulation coating Wi has been peeled, first, referring to FIG. 3, a pair of contact arms with one gripping arm 9b open to the other gripping arm 9a. The contact surfaces 31f and 31f are in contact with the outer periphery of the core wire Wc. In this case, the pair of contact surfaces 31f and 31f can be in contact with the outer periphery of the electric wire W.

  Next, when the first projecting piece 11 is moved from the state shown in FIG. 3 toward the core wire Wc, the movable member 3 can be relatively moved backward by being pushed by the core wire Wc. Thereby, the core wire Wc can be introduced into the recess 131.

  From the state shown in FIG. 3, when the operating lever 94 is grasped and the operating lever 94 is brought close to the operating rod 91 (see FIG. 8), the other tip tool 10 can be closed with respect to one tip tool 10. . Then, the core wire Wc is introduced into the cutout groove 41d from the outer peripheral direction (see FIG. 4).

  Next, the operation lever 94 is grasped, and the operation lever 94 is further moved closer to the operation rod 91 (see FIG. 8). Thereby, the core wire Wc is pushed by the movable member 3 and moves to the back side of the notch groove 41d (see FIG. 4). During this time, the core wire Wc moves between the pair of brushes Br and Br, so that the outer periphery of the core wire Wc can be polished. Moreover, in the state shown in FIG. 4, it is pushed by the core wire Wc, and the moving bar 51 has moved to the back side of the notch groove 41d.

  Next, when the operating lever 94 is moved away from the operating rod 91 from the state shown in FIG. 4 (see FIG. 8), the one tip tool 10 can be relatively moved away from the other tip tool 10. And it is urged | biased by the tension | pulling coil spring 52s, and the core wire Wc can be moved to the opening side of the notch groove 41d. During this time, the core wire Wc moves between the pair of brushes Br and Br, so that the outer periphery of the core wire Wc can be polished.

  As described above, when the tip tool 10 according to the embodiment operates the operation lever 94 (see FIG. 8) and repeats the opening and closing operation of the pair of gripping arms 9a and 9b, the brush Br is implanted in conjunction with this operation. As the core wire Wc reciprocates inside the cut-out groove 41d, the thin core wire Wc can be easily polished.

  The wire polishing tip tool according to the present invention can easily polish the core wire by operating the operation lever arranged in the handle portion of the insulated Yatco. Like the wire polishing tip tool shown in the prior art, This is convenient because it is not necessary to move the common operation bar along the line.

The wire polishing tip tool according to the present invention has the following effects.
(1) If the tip tool for electric wire polishing according to the present invention is used, it is not necessary to move the common operation rod along the electric wire, and electric wire polishing can be carried out in a state where the insulating jacket is held.
(2) The tip tool need not be replaced after the wire is polished, and the wire can be approached without replacing the tip tool.
(3) It does not greatly increase the weight of the tip tool and can be used intuitively without requiring complicated procedures.

  Although the present invention has disclosed a tip tool for indirect hot-wire construction that can indirectly hot-wire a high-voltage distribution line in an uninterruptible state using an insulating Yatco or the like, the tip tool of the present invention is an indirect hot-wire construction. It is expected to be applied in other fields without being limited to the above.

1 Body (Tip tool body)
2 Locking means 3 Movable member 4 1st electric wire introduction member 9 Insulating Yatco (insulating operating rod)
9a, 9b A pair of gripping arms 10 Tip tool (tip tool for wire polishing)
11 1st protrusion 11s Compression coil spring (1st biasing member)
11h Concave portion 12 Second projecting piece 41d Notch groove 51 Moving bar 52 Slide shaft 52s Tension coil spring (second biasing member)
53 Bridging bar 90a / 90b A pair of gripping surfaces 91a / 91b A pair of gripping claws Br Brush W Electric wire Wc Core wire

Claims (6)

In order to polish the core of the electric wire from which the insulation coating has been peeled off, it can be attached to a pair of opening and closing gripping arms provided at the tip of the insulation operation rod,
A block-shaped tip tool main body having a recessed portion into which a gripping claw protruding in the centrifugal direction from the pair of gripping arms can be inserted is opened on the bottom surface;
A locking means that is attached to the tip tool body and is capable of fixing the gripping claw from a surface opposite to the gripping surface of the gripping claw;
One of the tip tool bodies is
A plate-like first projecting piece projecting on the opposite side to the opening surface of the recess,
A C-shaped movable member that is connected to the first protrusion piece so as to be able to advance and retreat in a state of straddling the first protrusion piece, and has a pair of contact surfaces that can contact the outer periphery of the electric wire at the tip edge. ,
A first urging member that urges the movable member to force the movable member toward the first protrusion;
The other tip tool body is
A plate-like second projecting piece projecting on the opposite side to the opening surface of the recess;
A first electric wire introducing member that protrudes from one surface of the second protruding piece toward the first protruding piece, and that has a cutout groove that can be introduced from the outer peripheral direction in the middle portion;
A brush planted on the inner wall of the notch groove, and a brush that can freely contact the outer peripheral surface of the core wire;
A moving bar arranged movably inside the notch groove;
A pair of slide shafts, one end of which is fixed to the moving bar and slidably connected to a guide hole opened in the second protrusion;
A cross-linking bar cross-linking the other end of these slide shafts;
A second urging member that engages one end with the bridging bar, engages the other end with the second projecting piece, and urges the moving bar to move toward the opening side of the notch groove; Have
In a state where the pair of gripping arms are closed, the core wire can be moved to the back side of the notch groove against the urging force of the second urging member,
An electric wire polishing tip tool that is biased by the second biasing member and can move the core wire to the opening side of the notch groove when the pair of gripping arms is opened. One of the tip tool bodies is
A second electric wire introduction member protruding from the tip of the first protrusion toward the second protrusion;
The inner surface of the second electric wire introduction member, the surface opposite to the opening surface of the concave portion, and one surface of the first protruding piece constitute a concave portion in which the electric wire can be introduced from the outer peripheral direction. The tip tool for electric wire polishing according to 1. The locking means is
An engaging pin that can protrude forward and backward from the inner wall of the concave portion and that can be brought into contact with the gripping claw from a surface opposite to the gripping surface of the gripping claw,
The wire polishing tip tool according to claim 1, further comprising: a coil spring that is held inside the tip tool body and biases the force of the engagement pin toward the gripping claw.   The pair of tip tool bodies are formed of a rough surface, and have a gripping surface that can grip a wire from the outer peripheral direction on the opposing surface, the tip tool for polishing an electric wire according to any one of claims 1 to 3.   The tip tool for electric wire polishing according to any one of claims 1 to 4, wherein the first urging member comprises a compression coil spring.   The tip tool for electric wire polishing according to any one of claims 1 to 5, wherein the second urging member comprises a tension coil spring.

Images