JP2013055812A - Tip end tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tip end tool having a structure capable of carrying out predetermined processes of work for wiring a drop wire at once, preventing the hanging-down of a cut end part of the drop wire even if the drop wire is cut off, eliminating the need of work for installing an insulation terminal cap to an end portion side of the drop wire, and enabling a worker to expose a coating material of the drop wire without stripping that with a tool held by a hand.SOLUTION: A tip end tool 1 installed to an insulation pincers 101 are provided with blade mechanisms 2 and 3. The blade mechanism 2 and the blade mechanism 3 are disposed so as to be aligned along an axial direction of wiring 51. The blade mechanism 2 has blade portions 8 and 9 capable of cutting off only coating material 52 of the wiring 51, and the blade mechanism 3 has the blade portions 8 and 9 capable of mainly cutting off a core 53 of the wiring 51. The blade mechanism 2 and the blade mechanism 3 can simultaneously perform cutting off of the core 53 and the coating material 52 at two places on the wiring 51.

Description

  The present invention is mounted on the tip of an indirect hot wire tool such as an insulating Yatco, and has a structure in which the surface of the core wire is covered like a drawn line, and a step of cutting edges and stripping a wire in an aerial state It is related with the structure of the tool provided with the compound functionality which can be performed simultaneously.

  As one of the works for the aerial state wiring that covers the periphery of the core wire, there is a case where the underline wiring work for once connecting the edge is performed after the underline is once cut off in the transformer suspension work. In the edge cutting operation for cutting the wiring in the conventional underline wiring work, for example, the wiring is completely cut using scissors having a configuration in which two blade portions intersect and cut as shown in Patent Document 1, for example.

  And, since the core wire in the charged state appears on the end face at the overhead line side (power supply side) end of the underline generated by the process of cutting the underline, it is possible to perform an electric shock or electric shock before edge connection between the ends of the underline again. In order to prevent the occurrence of a short circuit, it is necessary to temporarily attach an insulating member such as a terminal cap as shown in Patent Document 2 or the like at the overhead wire side end of the underline.

  Also, at the cut-out side (load side) end of the underline generated by cutting the underline, in order to detect the electric power before connecting the ends of the underline again to the edge, In this work of stripping the coating material of the underline, for example, as shown in FIG. 5 of Patent Document 3, the worker holds the stripping jig etc. in his hand to the underline. It was stripped directly.

JP 2003-224910 A JP-A-9-74635 JP 2010-11629 A

  However, in the edge cutting process in which the underline is completely cut using the scissors having the structure shown in Patent Document 1, in order to prevent both ends of the cut down line from drooping immediately after cutting, the underline is cut. It is necessary to hold the vicinity of the part to be done in advance with an insulating jacket or the like, so that the work of the underline wiring work is complicated and a plurality of workers may be required to operate a plurality of insulated jackets. There was a bug.

  In addition, when a process of temporarily attaching a terminal cap as shown in Patent Document 2 to the end of the underline on the overhead line side, the total number of operations of the underline wiring work is required for attaching and detaching the terminal cap. There is a disadvantage that it is relatively increased and it is difficult to perform the underline wiring work in a simple and short time.

  Furthermore, when the operator directly holds the stripping jig shown in Patent Document 3 on the cutout side end of the underline and strips the wiring covering material directly, Since the operator may accidentally cut his / her hand with the blade of the removal jig, it is necessary for the worker to wear gloves for preventing cuts in order to ensure the safety of the work. . For this reason, since the work is performed while wearing gloves, there is a possibility that the speed of the work of stripping the covering material and the underline wiring work may be further impaired. There is also a risk of damaging the core wire with the blade of the stripping jig.

  Therefore, the present invention has a configuration in which predetermined steps of the underline wiring work can be performed at one time, and even if the underline is cut, the cut end portion of the underline is prevented from drooping. A tip that eliminates the need to attach an insulating end cap on the end side, and also eliminates the need to strip the underlined covering material with an instrument that the operator has directly in his hand. The purpose is to provide a tool.

  The multi-function tip tool according to the present invention is used in a wiring operation including a step of covering a surface of a core wire with a covering material, cutting the core wire of an aerial wiring, and peeling off the covering material. A tip tool that is attached to an indirect hot wire tool via a connection portion and a second connection portion, and includes a first blade mechanism and a second blade mechanism that can be arranged along the axial direction of the wiring. And the first blade mechanism includes a blade portion provided in a first arm extending from the first connection portion and a blade portion provided in a second arm extending from the first connection portion. The second blade mechanism has a recess cut out so as to form a circle with the same inner periphery as the outer periphery of the core wire when the two blade portions intersect with each other. Is a blade provided on a third arm extending from the first connecting portion and the second connecting portion. The blade portion provided on the extending fourth arm moves in a direction that is relatively distant, and the two blade portions have protruding blades that intersect when the blade portions are relatively close to each other, and The portions other than the protruding blades are characterized in that the overhead wiring side is wound inward so that the covering material is not cut when the protruding blades intersect each other (Claim 1). Here, the wiring is an electric wire such as a high voltage underline. The wiring covering material is an insulating material such as ethylene propylene rubber. The indirect hot wire tool is, for example, an insulating Yatco. The distance between the first blade mechanism and the second blade mechanism is, for example, a dimension obtained by combining the length of half of the dimension in the axial direction of the insulating sleeve and the length of the stripping margin. In addition, the first blade mechanism is configured so that the opening and closing of the two blade portions of the first blade mechanism and the opening and closing of the two blade portions of the second blade mechanism are performed in synchronization with the operation by the indirect live tool. A blade mechanism and the second blade mechanism are connected to each other (Claim 2).

  As a result, the opening and closing of the two blade portions in the first blade mechanism of the tip tool and the opening and closing of the two blade portions in the second blade mechanism are simultaneously performed relatively remotely with respect to the wiring by an operation from the indirect live tool. Therefore, it is possible to carry out wiring work in a live line state. In this operation, only the covering material is cut at a place where the wiring is present, and only the core wire is cut mainly at the place where the wiring is present, thereby generating a part where the covering material is connected. That is, the position at which the core wire is cut and the position at which the covering material is cut are, for example, spaced approximately half the axial dimension of the insulating sleeve, and between the position at which the core wire is cut and the position at which the covering material is cut. Then, the core wire is in close contact with the covering material. For this reason, even if a core wire is cut | disconnected, the edge part of wiring does not hang down on both sides of the cutting | disconnection location of this core wire. In addition, the core wire is exposed on one side by gripping the vicinity of both sides of the part where the core wire is cut with an indirect hot wire tool equipped with a gripping function such as an insulating jacket and pulling it in the axial direction of the wiring. There is no need to peel off the coating material, and on the other side, there is a coating material on the outside of the core wire in the axial direction of the wiring. It is.

  Further, in the tip tool according to the present invention, the two blade portions of the first blade mechanism and the two blade portions of the second blade mechanism are such that one blade portion and the other blade portion are indirectly activated. The structure which opens and closes in the axial direction of the support rod of a wire tool may be sufficient (Claim 3). Thereby, it becomes easy for an operator to confirm whether wiring is appropriately located between each two blade parts of two blade mechanisms.

  Furthermore, in the tip tool according to the present invention, one or both of the first blade mechanism and the second mechanism have a guide mechanism for guiding the wiring to the recesses or the protruding blades of the two blade portions. The provided structure may be sufficient (Claim 4). As a result, the wiring in the aerial state is moved to a fixed position such as on the recess of the two blade portions of the first blade mechanism or on the trajectory of the protruding blade of the two blade portions of the second blade mechanism. Can be brought smoothly and naturally without adjustment.

  As described above, according to the first to fourth aspects of the present invention, the opening and closing of the two blade portions in the first blade mechanism of the tip tool and the second blade mechanism by the operation from the indirect hot tool. Since the two blades can be opened and closed simultaneously from a relatively remote location, it is possible to cut the edges of the wiring and strip the coating material in a live state, and to perform wiring work during power outage work. It is unnecessary, and it is possible to prevent inconvenience to consumers existing around the work site due to wiring work.

Further, according to the invention described in claims 1 to 4, by opening and closing the two blade portions in the first blade mechanism of the tip tool and opening and closing the two blade portions in the second blade mechanism. Only the covering material can be cut at a place with wiring, and only the core wire can be cut at a place with wiring to leave a part where the covering material is connected. As a result, the position where the core wire is cut and the position where the covering material is cut can be spaced, for example, by approximately half the axial dimension of the insulating sleeve, and the position where the core wire is cut and the covering material are cut. Since the core wire is kept in close contact with the covering material between the positions, the ends of the wiring do not hang down on both sides of the cut portion of the core wire even if the core wire is cut.
For this reason, it is not necessary to cut the wiring while gripping the portions near both sides of the portion where the wiring is cut with an indirect hot wire tool such as an insulating jacket, and the number of workers can be reduced.

And, by gripping the part near the both sides of the part where the core wire is cut with an indirect hot wire tool equipped with a gripping function such as an insulating jacket and pulling it in the axial direction of the wiring, the core wire is exposed on one side of the wiring. Therefore, it is not necessary for the worker to take off the covering material by holding the stripping jig or the like in his / her hand, and there is no possibility that the worker may be injured by the stripping jig or the like.
In addition, by gripping the vicinity part on both sides of the part where the core wire is cut with an indirect hot wire tool having a gripping function such as an insulating jacket and pulling it in the axial direction of the wiring, the other side of the wiring is more than the cutting part of the core wire. Since there is a covering material in the axial direction of the wiring, and this covering material serves as a terminal cap, it is possible to eliminate the need to attach the terminal cap, so that the work of wiring work can be speeded up and simplified. .

  In particular, according to the invention described in claim 3, since it becomes easy for an operator to check whether or not the wiring is properly positioned between the two blade portions of the two blade mechanisms, the wiring work can be performed quickly. And simplification can be further achieved.

  In particular, according to the invention described in claim 4, it is possible to bring the wiring in the aerial state smoothly and naturally without the operator having to adjust the recesses of the two blade portions of the first blade mechanism, Since the wiring in the state can be brought smoothly and naturally without the operator adjusting the protruding blades of the two blade parts of the second blade mechanism, the wiring work can be speeded up and simplified. It becomes possible to plan even more.

FIG. 1 is an overall view showing an example of an insulating jacket for an indirect hot wire tool to which a tip tool according to the present invention is attached. FIG. 2 is an explanatory view showing the configuration of the first embodiment of the tip tool of the same, FIG. 2 (a) shows a state seen from the front side of the first blade mechanism, and FIG. The state seen from the front side of the 2nd blade mechanism is shown, and Drawing 2 (c) is a figure showing the state seen from the side to these blade mechanisms. FIG. 3 is an explanatory view showing a mode in which the first blade mechanism cuts only the wiring covering material in the first embodiment of the tip tool same as above, and FIG. 3 (a) shows the first blade mechanism opened. FIG. 3B is a diagram illustrating a state in which the first blade mechanism is closed. FIG. 4 is an explanatory view showing a mode in which the second blade mechanism mainly cuts the core wire in the first embodiment of the tip tool same as above, and FIG. 4A is a state in which the second blade mechanism is opened. FIG. 4B is a diagram illustrating a state in which the second blade mechanism is closed. FIG. 5 is an explanatory diagram showing the process of the underline wiring work that allows the wiring to hang down, the cap is unnecessary, and the covering material is not required to be stripped using the tip tool according to the first embodiment. Yes, FIG. 5 (a) shows the state before the wiring is cut, and FIG. 5 (b) shows only the covering material is cut on the A side and the core wire is mainly cut on the B side. FIG. 5C is a diagram showing a state in which both sides of the wiring are pulled and divided into two. FIG. 6 is an enlarged view showing a configuration in which a guide mechanism for guiding wiring to the first blade mechanism and the second blade mechanism is provided in the first embodiment of the tip tool. FIG. 7 is an explanatory view showing a configuration of a second embodiment of the tip tool according to the present invention. FIG. 7 (a) shows a state seen from the front side of the first blade mechanism, and FIG. The state seen from the front side of the 2nd blade mechanism is shown, and Drawing 7 (c) is a figure showing the state seen from the side to these blade mechanisms.

  Embodiments of the present invention will be described below with reference to the drawings.

  In FIG. 1, an insulating jacket 101 is shown as an example of an indirect hot wire tool to which the tip tool 1 according to the present invention is attached. The insulating Yachto 101 itself is a known one, but its configuration will be described with reference to FIG.

  The insulating Yatco 101 includes a support rod 102 having a relatively large diameter that is gripped by an operator, a grip portion 103 provided at the tip of the support rod 102, an operation portion 104 for operating the grip portion 103, A transmission rod 105 having a relatively small diameter that transmits the operation of the operation unit 104 to the grip unit 103 is configured.

  The support rod 102 is provided with an engaging portion 106 formed by facing two plates on the tip side, and umbrella-shaped collars 107 and 108 are provided in the middle of the axial direction. The grip portion 103 is sandwiched and fixed between the plates of the engaging portion 106 of the support rod 102 and does not move, and is connected to the transmission rod 105 and is sandwiched between the plates of the engaging portion 106 and the shaft portion. And a movable gripping piece 111 pivotally supported via 110.

  The grip piece 111 is biased in a direction away from the grip piece 109 by an elastic member or the like (not shown). The transmission rod 105 is made of an insulating material. As described above, one end is connected to the gripping piece 111 and a collar 112 is provided in the middle of the axial direction. It is connected to a support rod 104b described below via a shaft portion 113. The operation unit 104 includes a handle 104a, a support bar 104b, and an attachment part 104c. The handle 104a is configured to be rotatable in a direction away from the support bar 102. 114 is pivotally supported.

  As a result, by moving the handle 104a to the side close to the support rod 102, the support rod 104b swings away from the grip portion 103 with the shaft portion 112 as the center point, and as a result, the transmission rod connected to the support rod 104b. 105 is pulled to the support rod 104b side, and the grip piece 111 connected to the transmission rod 105 rotates around the shaft portion 110 to the grip piece 109 side, so that the grip piece 109 and the grip piece 111 are relatively close to each other. It is possible to make it.

  2 to 4 show a tip tool 1 according to the present invention. The tip tool 1 includes two blade mechanisms 2 and 3, and connection portions 4 and 5 for connecting to the grip pieces 109 and 111 of the insulating yoke 101.

  The tip tool 1 is composed of a core wire 53 whose surface is covered with a covering material 52 and has a composite function for cutting the core wire 53 and stripping the covering material 52 with respect to the wiring 51 in an aerial state. It has become a thing. Here, the core wire 53 is formed of a material having excellent conductivity such as copper, and the covering material 52 is formed of an insulating material such as ethylene propylene rubber.

  As shown in FIG. 1, the connecting portions 4 and 5 of the tip tool 1 include box portions 4 a and 5 a each having an opening portion opened downward and a through hole formed on a side, and the box portions 4 a and 5 a. Fasteners 4b and 5b that can be inserted into the through holes are inserted into the box portions 4a and 5a from the openings of the box portions 4a and 5a. By inserting the fasteners 4b and 5b into the through holes 5a and pressing the grip pieces 109 and 111 in the box portions 4a and 5a, the grip pieces 109 and 111 are fixed to the connection portions 4 and 5 so that both Connected.

  As shown in FIG. 1A, the blade mechanism 2 includes two arms 6 and 7 and blade portions 8 and 9 provided at the tips of the arms 6 and 7.

  The arms 6 and 7 are coupled to the box portions 4a and 5a of the connection portions 4 and 5 via the shaft portion 10 on a side surface different from the side surface provided with the through holes of the box portions 4a and 5a. 7 can swing to some extent about the shaft 10.

  In the blade mechanism 2, as shown in FIG. 1C, the coil spring 11 is extrapolated to the shaft rod 10 b of the shaft portion 10. Accordingly, when the shaft portion 10 is mounted on the box portions 4 a and 5 a, the coil spring 11 is interposed between the head portion 10 a of the shaft portion 10 and the arm 7. Further, the blade portion 8 and the blade portion 9 are connected by a shaft portion 12, and can swing in a direction that is relatively far from the shaft portion 12.

  The blade mechanism 3 is the same as the blade mechanism 2 in the basic configuration. As shown in FIG. 1B, the two arm 6, 7 and the blade portion provided at the tip of the arm 6, 7. 8 and 9, and connected to the box portions 4 a and 5 a of the connection portions 4 and 5 via the shaft portion 10. Thereby, the arms 6 and 7 can swing to some extent around the shaft portion 10.

  In addition, as shown in FIG. 1C, the blade mechanism 3 has a shaft portion 10 when the coil spring 11 is extrapolated to the shaft rod 10b of the shaft portion 10 and the shaft portion 10 is mounted on the box portions 4a and 5a. A coil spring 11 is interposed between the head 10 a and the arm 7. Further, the blade portion 8 and the blade portion 9 are also connected by the shaft portion 12 in the same manner as the blade mechanism 2 and can swing in a direction that is relatively far from the shaft portion 12 as a center. ing.

  And the axial part 12 of the blade mechanism 3 is connected so that it may operate | move integrally via the axial part 12 and the transmission rod 13 of the blade mechanism 2, as FIG.1 (c) shows. Thus, when the blade portion 8 and the blade portion 9 of the blade mechanism 2 are moved in the direction in which the blade portion 9 is moved away and forth, the blade portion 8 and the blade portion 9 of the blade mechanism 3 are also moved toward and away from each other by the same operation. To work.

  The distance between the blade mechanism 2 and the blade mechanism 3 is set to a half length (for example, 22.5 mm) of the dimension in the axial direction of the insulating sleeve (for example, 45 mm) (for example, 2.5 mm). It is the added dimension (for example, 25 mm). As will be described later, the core wire 53 does not naturally fall out of the covering material 52 on the end side where only the covering material 52 is cut, and the core wire 53 is covered with the covering material 52 when pulled from both sides with a yatco. It is a numerical value that can be drawn smoothly from In addition, although there are a plurality of types of dimensions in the axial direction of the insulating sleeve, all of them are 45 mm.

  Further, by setting the distance between the blade mechanism 2 and the blade mechanism 3 to such a numerical value, the core wire 53 exposed from the covering material 52 is inserted into the insulating sleeve (not shown) from both sides through the central recess of the insulating sleeve. Since the dimension of the core wire 53 exposed from the covering material 52 formed using the tip tool 1 is 25 mm, which is a suitable dimension for connection using an insulating sleeve, when the connection is performed after compression, the covering material 52 It is not necessary to further adjust the dimension of the exposed core wire 53 later.

  By the way, the blade parts 8 and 9 of the blade mechanism 2 have the recessed parts 15 and 16 recessed in the transversal direction of the arms 6 and 7, as shown in FIG. The inner periphery of these recesses 15 has an arc shape, and when the blade portion 8 and the blade portion 9 are closed and overlapped, a circular space S1 can be formed as shown in FIG. It can be done. The inner diameter dimension of the circular space S <b> 1 is the same as the diameter dimension of the core wire 53 of the wiring 51.

  As a result, as shown in FIG. 3A, the wiring 51 is arranged on the track between the blade portions 8 and 9 in the open state of the blade mechanism 2 and the recesses 15 and 16 are relatively close to each other. By closing the portions 8 and 9, as shown in FIG. 3B, the wiring 51 is accommodated in the space S <b> 1 formed by the recesses 15 and 16. The blades 8 and 9 are cut by the blades around the recesses 15 and 16, and the core wire 53 is left without being cut.

  On the other hand, the blade portions 8 and 9 of the blade mechanism 3 are substantially arc-shaped with the edge line facing the wiring 51 facing inward as shown in FIGS. 2 (b) and 4 (a). Even if the blade portion 8 and the blade portion 9 are closed and overlapped with each other, as shown in FIG. 4B, the lateral width at both ends is narrow and the central lateral width is wide. A convex lens-shaped space S2 is formed. The width of the center of the space S2 is equal to or larger than the diameter of the covering material 52 of the wiring 51.

  Furthermore, the blade parts 8 and 9 of the blade mechanism 3 are directions in which the protruding blades 17 and 18 come close to each other from a portion corresponding to the center of the space S2 in the edge line on the side facing the wiring 51 of the blade parts 8 and 9. It extends to. The lateral widths of the protruding blades 17 and 18 are the same as the diameter of the core wire 53 of the wiring 51, and the protruding blades 17 and 18 are shown in FIG. 4B when the blade portions 8 and 9 are closed. It is supposed to overlap.

  Thereby, as shown in FIG. 4A, the wiring 51 is arranged between the blade portions 8 and 9 in the open state of the blade mechanism 3 and on the track where the protruding blades 17 and 18 are relatively close to each other, By closing the blade portions 8 and 9, as shown in FIG. 4B, the wiring 51 is accommodated in the space S2 formed between the blade portions 8 and 9, while the protruding blades 17 and 18 are lateral. Inserted from the direction, a part of the covering material 52 and the whole core wire 53 are cut. That is, parts other than the part into which the protruding blades 17 and 18 of the covering material 52 of the wiring 51 are inserted are not cut and are left in a state of being left.

  The cutting of only the covering material 52 of the wiring 51 by the blade mechanism 2 and the cutting of the core wire 53 of the wiring 51 by the blade mechanism 3 are connected via the transmission rod 13 to the blade mechanisms 2 and 3. So done at the same time.

  However, the wiring work using the tip tool 1 for the wiring 51 is performed in a process as shown in FIG. 5, for example. First, although not shown, the connecting portions 4 and 5 of the tip tool 1 are fixedly connected to the grip pieces 109 and 111 of the insulation tool 101, the insulation tool 101 to which the tip tool 1 is attached is lifted, and FIG. Approach the wiring 51 in the aerial state shown in a).

  Then, the operation unit 104 of the insulating Yachto 101 is operated to bring the gripping piece 109 and the gripping piece 111, and thus the connection part 4 and the connection part 5 of the tip tool 1 relatively close to each other. As a result, the blade mechanisms 2 and 3 swing the arms 6 and 7 and the blade portions 8 and 9 at the tip thereof around the shaft portion 10, and the blade portions 8 and 9 of the blade mechanism 2 and the blade portion of the blade mechanism 3. 8 and 9 are closed at the same time, and as shown in FIG. 5B, only the covering material 52 is cut at the portion indicated by the arrow A of the wiring 51, and the covering material 52 is cut at the portion indicated by the arrow B of the wiring 51. The core wire 53 is cut in such a manner that the upper part and the lower part of FIG. At this time, as described above, the distance between the arrow A and the arrow B is secured to a length (for example, 25 mm) obtained by adding the length of the stripping to the length of the axial dimension of the insulating sleeve, as described above. Since the core wire 53 and the covering material 52 are kept in close contact with each other because of this dimension, the wiring 51 does not separate and hang down at the cut portion of the core wire 53, so that the insulating tool 101 can be used as a tip tool. When performing the above-described operation using 1, it is not necessary to support the insulating wires 101, 101 on the both sides of the portion of the wiring 51 where the core wire 53 is cut. In other words, it is not necessary to operate as many as three insulated Yatco 101, and two or more workers are not required.

  Further, the two insulating yokes 101 and 101 are used to grip the vicinity of both sides of the cut portion of the core wire 53 of the wiring 51, and the one insulating jacket 101 and the other insulating jacket 101 are pulled in the opposite directions. As a result, as shown in FIG. 5C, the load 51 of the wiring 51 is separated in such a manner that the core wire 53 is exposed from the covering material 52. The covering material 52 is separated by extending. This eliminates the need for stripping the covering material 52 using a knife or the like to expose the core wire 53 of the cut wiring 51 at the load side end of the wiring 51, and also at the load side end of the wiring 51. Since the end surface of the core wire 53 in a charged state is hidden by a covering material 52 extending outward in the axial direction from the core wire 53, an operation of attaching an insulating cap to cover the core wire 53 in a charged state becomes unnecessary. . In addition, the dimension of the core wire 53 exposed from the covering material 52 at the load side end of the wiring 51 is 25 mm.

  In addition, when the covering material 52 is cut out later and the core wires 53 are reconnected, many portions of the covering material 52 are cut by the protruding blades 17 and 18 of the blade mechanism 3, and thus the existing covering material is removed. Since the removal of 52 is only required by pulling with a Yatsuko or the like, it is possible to easily remove the existing portion extending from the arrangement 51 outward in the axial direction from the core wire 53. At this time, the dimension of the core wire 53 exposed from the covering material 52 on the negative power supply side of the wiring 51 is also 25 mm.

  Here, as shown in FIG. 6, the tip tool 1 has guide mechanisms 20 and 21 for guiding the wiring 51 to the recesses 15 and 16 formed in the blade portions 8 and 9 of the blade mechanism 2. May be. The guide mechanisms 20, 21 are provided with a U-shaped notch 26 extending in the short direction of the arm 7 on the blade portion 9 (not shown, but the blade portion 8 is also the same). A fixed portion 22 embedded in the wire 51, a movable portion 24 having a recess 24a in contact with the outer peripheral surface of the covering 52 of the wiring 51, a coil spring having one end connected to the fixed portion 22 and the other end connected to the movable portion 24, etc. A spring 23 is included. The movable part 24 protrudes inward from the ends of the blade parts 8 and 9 to the extent that there is no problem in taking in the arrangement 51 when the spring 23 is extended most. When the movable part 24 is pressed by the wiring 51, the movable part 24 contracts the position of the two-dot chain line from the position of the solid line in FIG. 6B while contracting the spring 23 as shown in FIG. Move towards. Further, as shown by a two-dot chain line in FIG. 6B, when the core material 53 of the wiring 51 is located in the recess 16 and is not cut while cutting the covering material 52 of the wiring 51, the movable part. 24 is located closer to the fixed portion 22 than the recessed portion 16, and the recessed portion 24 a of the movable portion 24 is also positioned closer to the fixed portion 22 than the recessed portion 16 of the blade portion 9 by the thickness of the covering material 52.

  By having the guide mechanisms 20 and 21 that perform such a configuration and movement, when the blade portions 8 and 9 of the tip tool 1 are closed, the wiring 51 slides outward from the tips of the blade portions 8 and 9. Since the core wire 53 is guided to the recesses 15 and 16 side without causing a displacement, only the covering material 52 of the wiring 51 can be reliably cut by the blade mechanism 2.

  Although not shown, the blade mechanism 3 is also provided with a guide mechanism having the same configuration as the guide mechanisms 20 and 21 shown in FIG. 6, and the wiring 51 is connected when the blade portions 8 and 9 of the tip tool 1 are closed. The core wire 53 of the wiring 51 is securely connected so that the core wire 53 is guided on the trajectory where the protruding blades 17 and 18 intersect without causing a positional shift such as rising outward from the tips of the blade portions 8 and 9. The blade mechanism 2 may be used for cutting.

  FIG. 7 shows a different embodiment of the tip tool 1 according to the present invention. Hereinafter, the tip tool 1 will be described with reference to FIG. However, the structures of the blade mechanisms 2 and 3 of the tip tool 1 are the same as those of the previous embodiment in the connection portions 4 and 5, the shaft portions 10 and 12, the arms 6 and 7, and the transmission rod 13. The same reference numerals as those in the example are attached and the description thereof is omitted, and the configuration of the blade portions 8 and 9 will be described.

The blade portion 8 and the blade portion 9 of the blade mechanism 2 are connected by the shaft portion 10 and are swingable in directions away from each other around the shaft portion 10, which is the same as in the first embodiment. However, the blade portion 8 and the blade portion 9 are opened sideways as shown in FIG. In addition, the blade portion 8 and the blade portion 9 of the blade mechanism 3 are also connected by the shaft portion 10 and can swing in directions away from each other around the shaft portion 10. However, the blade portion 8 and the blade portion 9 are opened sideways as shown in FIG. 7B. And the side where the blade part 8 and the blade part 9 of the blade mechanism 2 open and the side where the blade part 8 and the blade part 9 of the blade mechanism 3 open are the same side as shown in FIG. It has become.

  Thus, when the operator performs wiring work on the wiring 51 using the tip tool 1, the degree of opening between the blade portion 8 and the blade portion 9 of the blade mechanism 2, and the blade portion 8 and the blade of the blade mechanism 3. It becomes possible to make it easy to confirm the degree of opening with the portion 9.

DESCRIPTION OF SYMBOLS 1 Tip tool 2 Blade mechanism 3 Blade mechanism 4 Connection part 5 Connection part 6 Arm 7 Arm 8 Blade part 9 Blade part 15 Recess 16 Recess 17 Projection blade 18 Projection blade 20 Guide mechanism 21 Guide mechanism 51 Wiring 52 Coating material 53 Core wire 101 Insulation Yatco 109 Holding piece 111 Holding piece

Claims (4)

The surface of the core wire is covered with a covering material, and is used in a wiring operation including a step of cutting the core wire of the aerial state wiring and stripping off the covering material, via the first connecting portion and the second connecting portion. A tip tool to be attached to an indirect live tool,
A first blade mechanism and a second blade mechanism that can be arranged along the axial direction of the wiring;
In the first blade mechanism, a blade portion provided in a first arm extending from the first connection portion and a blade portion provided in a second arm extending from the first connection portion are relatively The two blade portions have recesses that are notched so that a circle with the same inner periphery as the outer periphery of the core wire is formed when intersecting,
In the second blade mechanism, the blade portion provided in the third arm extending from the first connection portion and the blade portion provided in the fourth arm extending from the second connection portion are relatively The two blade portions have protruding blades that intersect when these blade portions are relatively close to each other, and the portions other than the protruding blades are formed when the protruding blades intersect each other. A tip tool characterized in that the overhead wiring side is wound inward so as not to cut the covering material.   The first blade mechanism is configured such that the opening and closing of the two blade portions of the first blade mechanism and the opening and closing of the two blade portions of the second blade mechanism are performed in synchronization by an operation by the indirect live tool. The tip tool according to claim 1, wherein the second blade mechanism is connected to the tip tool.   The two blade portions of the first blade mechanism and the two blade portions of the second blade mechanism are such that one blade portion and the other blade portion are close to each other in the axial direction of the support rod of the indirect live tool. The tip tool according to claim 1 or 2, wherein the tool is opened and closed.   One or both of the first blade mechanism and the second mechanism are provided with a guide mechanism for guiding the wiring to the recesses or protruding blades of the two blade portions. Item 1, 2 or 3. Tip tool.

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