JP5043729B2 - Stopper with cap - Google Patents

Description

The present invention relates to a stopper with a cap that is used for cutting a covered overhead wire.

  As shown in FIG. 11, in the work for separating the covered overhead wire, two places of the covered overhead wire 9 are gripped by a pair of grippers 12 a and 12 b, and an expander having both ends connected to these grippers 12 a and 12 b 13 is driven to contract and the covered overhead wire 9 is bent, the curved portion of the covered overhead wire 9 is cut, and the two cut ends are distributed by the distributors 14a and 14b. At the cut end, as shown in an enlarged view in FIG. 12, the covering portion 10 is peeled to expose the core wire 11, and a stopper 17 is fixed to the core wire 11 at a position adjacent to the cut end surface of the cover portion 10. ing. Even if the portion gripped by the gripper 12b of the covering portion 10 is torn off from the other portion of the covering portion 10 by this stopper 17, the movement of the gripped portion is prevented, The inconvenience that the shredded covering portion 10 falls off the core wire 11 is prevented (see, for example, Patent Document 1). A cap 18 for preventing danger is attached to the tip of the core wire 11 exposed by skinning.

  The stopper 17 includes a stopper main body 72 integrally formed with a fixed gripping portion 71, a movable gripping portion 73 driven forward and backward toward the fixed gripping portion 71, and a stopper connected to the movable gripping portion 73. A screw shaft portion 74 screwed into the main body 72 and an operation portion 75 fixed to the tip of the screw shaft portion 74 are provided.

  Further, the cap 18 includes a sheath portion 81 that accommodates the distal end portion of the core wire 11 and an opening side of the sheath portion 81 as shown in the side view of FIG. 13A and the front view of FIG. The clip support part 82 integrally formed in the edge part and the clip pieces 83 and 83 attached to this clip support part 82 are provided. The clip support portion 82 is positioned on the axis of the sheath portion 81 and is inserted in the insertion opening 82a into which the core wire 11 is inserted, and protrudes in a direction perpendicular to the axis of the sheath portion 81 to support the swing shaft 84 of the clip pieces 83 and 83. It has a shaft support portion 82b. The clip piece 83 has a holding part 83a housed in the clip support part 82 and an operation part 83b protruding outward from the clip support part 82, and a portion between the holding part 83a and the operation part 83b is A pivot shaft 84 is pivotally attached. The two clip pieces 83 are urged in a direction in which the clamping portion 83 a approaches each other by a torsion spring 85 inserted through the swing shaft 84.

  The stopper 17 and the cap 18 are attached to the core wire 11 as follows.

  First, the stopper 17 is disposed on the core wire 11 so as to be adjacent to the cut end surface of the skinned covering portion 10, a remote rod (not shown) is engaged with the operation portion 75, and the operation portion 75 is rotated with the remote rod. . As a result, the movable gripping portion 73 is driven toward the fixed gripping portion 71, the core wire 11 is pressed and clamped by the fixed gripping portion 71 and the movable gripping portion 73, and the stopper 17 is fixed to the core wire 11. .

Thereafter, the operation portion 83b of the two clip pieces 83 of the cap 18 is sandwiched by a remote rod (not shown), and the two clip pieces are resisted against the biasing force of the torsion spring 85, as indicated by an imaginary line in FIG. 83 is swung to separate the two clamping portions 83a from each other. In this state, the tip end of the core wire 11 is inserted into the sheath portion 81 from the insertion opening 82a through the two clamping portions 83a, and the cap 18 is attached to the tip end portion of the core wire 11. Thereafter, the remote rod is operated to release the pinching operation of the operation portion 83b of the clip piece 83, the core wire 11 is held between the two holding portions 83a by the urging force of the torsion spring 85, and the cap 18 is fixed to the core wire 11. .
JP 2002-27624 A

  However, since the stopper 17 and the cap 18 are each provided with a fixing part to the core wire 11, there is a problem that the number of parts is large and the cost is likely to increase. In addition, when attaching the stopper 17 and the cap 18 to the core wire 11, it is necessary to sequentially perform the operation of arranging and fixing the stopper 17 and the operation of arranging and fixing the cap 18, which requires a lot of work. is there.

  Therefore, an object of the present invention is used in the work of separating the covered overhead wire, and can prevent the covering portion from falling off and the danger associated with the exposure of the core wire with a small number of parts, and can reduce the labor of the mounting work. It is to provide a stopper with a cap.

  In order to solve the above-described problems, the stopper with a cap according to the present invention includes a main body having a fixed gripping portion, a movable gripping portion that is driven to move forward and backward with respect to the fixed gripping portion of the main body, and is screwed into the main body and movable. A screw shaft portion that is connected to the gripping portion, is rotatable with respect to the movable gripping portion and can be moved integrally in the axial direction, and an operation portion that is connected to the screw shaft portion and receives an operation for rotationally driving the screw shaft portion. And a sheath part fixed to the main body so that the opening faces a gripping space between the fixed gripping part and the movable gripping part.

  According to the above configuration, when used for the construction work of covering the covered wire, first, the covered wire is gripped by the pair of gripping devices, and the pair of gripping devices are attracted by the extender so that the curved portion of the covering wire is Then, the curved portion of the covered overhead wire is cut. The stopper with a cap having the above-described configuration is attached to the core wire exposed by peeling the covering portion at the cut end of the covering overhead wire. First, the tip of the core wire at the cut end is accommodated in the sheath through the opening facing the gripping space through the gripping space between the fixed gripping portion and the movable gripping portion. Attach a stopper with a cap. At this time, the length of the core wire is set in advance so that the side surface opposite to the sheath portion of the main body is in contact with the cut end surface of the covering portion. Subsequently, the remote bar is engaged with the operation unit, and the operation unit is rotated by the remote bar. As a result, the screw shaft portion is driven to rotate, and the movable gripping portion moves in the axial direction of the screw shaft portion, whereby the movable gripping portion is driven toward the fixed gripping portion. As the movable gripping portion is driven toward the fixed gripping portion, the movable gripping portion and the fixed gripping portion come into contact with the outer surface of the core wire located in the gripping space and press the outer surface of the core wire. And this core wire is clamped. Thus, the stopper with cap is fixed to the core wire.

  Since this stopper with cap is fixed to the core wire with the main body adjacent to the cut end surface of the covering portion, for example, the portion gripped by the gripping device of the covering portion is torn off from the other portions of the covering portion. Even if there is, the movement of the gripped portion of the covering portion is prevented, and the inconvenience that the shredded covering portion falls off from the core wire can be prevented. Moreover, since the tip part of the core wire is covered with the sheath part, danger such as electric shock can be prevented.

  Since this stopper with cap can be fixed to the core wire by the fixed gripping part and the movable gripping part, the number of parts can be reduced and the cost can be reduced compared to the conventional separate stopper and cap each having fixing parts. It can be carried out.

  In addition, since this stopper with cap can be fixed only by operating the operation part with, for example, a remote stick after it is arranged at the tip of the core wire, an operation to place and fix the stopper as in the past and a cap are arranged. Therefore, it is possible to reduce the labor of the mounting work rather than sequentially performing the fixing operation.

  In the stopper with a cap according to one embodiment, the sheath portion has a flange at the opening side end portion, and this flange is screwed to the side surface of the main body.

  According to the said embodiment, since a sheath part can be fixed to a main body by simple structure, it can assemble easily and can reduce cost.

  According to the present invention, it is possible to prevent the covering portion from falling off and to prevent danger due to the exposure of the core wire with a small number of parts in the work for separating the covered overhead wire, and further, it is possible to reduce the trouble of attaching the core wire.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a stopper with a cap as an embodiment of the present invention. FIG. 2 is a front view showing a stopper with a cap, and FIG. 3 is a plan view showing the stopper with a cap. FIG. 4 is a left side view showing the stopper with cap, and FIG. 5 is a right side view showing the stopper with cap. 6 is a rear view showing the stopper with cap, and FIG. 7 is a bottom view showing the stopper with cap. FIG. 8 is a front sectional view showing a state in which the stopper with cap is cut along a plane including the axis of the sheath and the axis of the screw and viewed from the front.

  The stopper with cap 1 according to the present embodiment is fixed to the cut end of the covered electric wire in the work for separating the covered overhead wire, and prevents the covering portion from falling off from the core wire and the danger associated with the exposure of the core wire. . The stopper 1 with a cap is connected to a main body 2 having a fixed gripping portion 21, a movable gripping portion 3 that is driven forward and backward with respect to the fixed gripping portion 21 of the main body 2, and the movable gripping portion 3. The screw shaft portion 4 screwed into the main body 2, the operation portion 5 for operating the screw shaft portion 4, and the sheath portion 6 fixed to the main body 2 are roughly configured.

  The main body 2 has a substantially C-shape in a side view, and a portion that protrudes from the upper back side toward the front side is a fixed grip 21. A shallow V-shaped groove 22 for holding the core wire 11 is provided on the lower surface of the fixed grip 21. Further, a shallow round groove 23 for holding the core wire 11 is provided on the inner side surface of the main body 2 in the vicinity of the root of the fixed gripping portion 21. A through hole 24 extending toward the fixed grip 21 is formed in the lower portion of the main body 2, and a male screw on the outer peripheral surface of the screw shaft portion 4 is screwed into a female screw provided on the inner surface of the through hole 24. Match.

  The movable gripping portion 3 has a hexagonal shape in which the corners on both sides of the lower end of the rectangle are chamfered when viewed from the front, and is arranged so that the upper side faces the lower side of the fixed gripping portion 21. A shallow round groove 31 for holding the core wire 11 is formed on the upper side surface of the movable gripping portion 3. A bottomed hole 32 extending toward the upper side surface is formed on the lower side surface of the movable gripping portion 3, and the upper end portion of the screw shaft portion 4 is accommodated and connected to the bottomed hole 32.

  The screw shaft portion 4 includes a small-diameter portion 41 whose upper half is accommodated in the bottomed hole 32 of the movable gripping portion 3, and a threaded portion having a male screw provided on the outer peripheral surface thereof. 42 and a large-diameter portion 43 connected to the lower end of the threaded portion 42 and into which the operation portion 5 is fitted. As shown in FIG. 8, an engagement groove 41 a extending in the circumferential direction is provided near the upper end of the outer peripheral surface of the small diameter portion 41. The movable gripping portion 3 is provided with an engagement screw hole that intersects the bottomed hole 32 from the front and extends in the tangential direction of the inner peripheral surface. In a state where the small diameter portion 41 of the screw shaft portion 4 is accommodated in the bottomed hole 32 of the movable gripping portion 3, the engagement screw 45 is inserted into the engagement screw hole, and the engagement groove 41 a of the screw shaft portion 4 It engages so that it may form a string in planar view. Thereby, the screw shaft part 4 is rotatably connected to the movable gripping part 3. A washer 44 is disposed on the outer side of the small diameter portion 41 of the screw shaft portion 4 protruding from the movable gripping portion 3.

  The operation unit 5 includes a small-diameter cylindrical portion 51 that is externally fixed to the large-diameter portion 43 of the screw shaft portion 4, and a large-diameter cylindrical portion 52 that is connected to the lower end of the small-diameter cylindrical portion 51. Engagement grooves 52 a having a substantially T shape and engaged with the remote bar are respectively provided on the front side and the back side of the large diameter cylindrical portion 52.

  The sheath portion 6 includes, in order from one end to the other end, a small diameter cylindrical portion 61, a conical cylindrical portion 62 whose diameter increases toward the other end, a cylindrical large diameter cylindrical portion 63, and a flange portion 64. Have The flange portion 64 is provided with two screw holes 64 a and 64 a, and the sheath portion 6 is fixed to the side surface of the main body 2 by an attachment screw 65 inserted through the screw hole 64 a. Thereby, the opening 66 located inside the flange 64 of the sheath part 6 faces the gripping space between the fixed gripping part 21 and the movable gripping part 3 of the main body 2.

  The stopper with cap 1 having the above-described configuration is used as shown in FIGS.

  First, two places of the covered overhead wire 9 are gripped by a pair of gripping devices 12a and 12b, and the extender 13 connected at both ends to these gripping devices 12a and 12b is driven to contract, A portion between the two portions held by the wire tools 12a and 12b is bent. Subsequently, the curved portion of the covered overhead wire 9 is cut, and the two cut end portions are distributed by the distributing devices 14a and 14b so as to form an angular difference of, for example, 180 ° around the expander 13 axis. Thereafter, the covering portion 10 at the cut end is peeled to expose the core wire 11.

  Here, the exposed length of the core wire 11 is such that when the stopper with cap 1 is attached to the core wire 11, the side surface opposite to the side surface to which the sheath portion 6 of the main body 2 is fixed is in contact with the cut end surface of the covering portion 10. Make adjustments. That is, the exposed length of the core wire 11 is set shorter than the total of the dimension in the width direction of the main body 2 and the axial distance in which the core wire 11 can be inserted in the sheath portion 6.

  The stopper with cap 1 is attached to the core wire 11 adjusted to such an exposed length. In the cap stopper 1, the movable gripping portion 3 is separated from the fixed gripping portion 21 in advance, and a gripping space is provided between the fixed gripping portion 21 and the movable gripping portion 3. Through this gripping space, the tip of the core wire 11 is inserted into the sheath portion 6 from the opening 66, and the stopper with cap 1 is attached to the core wire 11. Thus, after attaching the stopper 1 with a cap to the core wire 11 so that the side surface of the main body 2 is in contact with the cut end surface of the covering portion 10, the hook of the remote bar is engaged with the engaging groove 52 a of the operation portion 5. The operation unit 5 is rotated via the remote stick. As a result, the screw shaft portion 4 is rotated and rotated, and the movable gripping portion 3 is driven toward the fixed gripping portion 21 so that the outer surface of the core wire 11 is moved to the movable gripping portion 3 and the fixed gripping portion 21. Squeeze in. Thus, the stopper with cap 1 is fixed to the core wire 11.

  Since the stopper 1 with a cap of this embodiment is fixed to the core wire 11 with the side surface of the main body 2 in contact with the cut end surface of the covering portion 10, for example, the portion gripped by the grasping device 12 a of the covering portion 10 is Even when the covering portion 10 is torn off from other parts, the movement of the gripped portion of the covering portion 10 can be prevented. Therefore, it is possible to prevent the inconvenience that the shredded covering portion 10, the grasping device 12 a, etc. are dropped from the core wire 11 and dropped. Moreover, since the front-end | tip part of the core wire 11 is covered with the sheath part 6, dangers, such as an electric shock resulting from the exposure of the core wire 11, can be prevented.

  Moreover, the stopper 1 with a cap of this embodiment can be fixed to the core wire 11 by the movable gripping part 3 and the fixed gripping part 21. Therefore, the stopper 17 having the fixed gripping portion 71 and the movable gripping portion 73 that are separately formed as in the prior art, the clip support portion 82 and the clip piece 83 as the fixing components, and swinging. Compared with the shaft 84 and the cap 18 having the torsion spring 85, the number of parts can be greatly reduced, and the cost can be reduced.

  Moreover, the stopper 1 with a cap of this embodiment can be fixed to the core wire 11 only by the operation | movement with which the core wire 11 is mounted | worn, and the rotation operation of the operation part 5 by a remote stick. Accordingly, the stopper 17 is attached to the core wire 11 as in the prior art, and the operation portion 75 is rotated and fixed with a remote stick. Further, the cap 18 is attached to the core wire 11 with the operation portion 18e of the cap 18 held between the remote sticks. After the mounting to the mounting portion, it is possible to greatly reduce the labor of the mounting work compared to releasing and fixing the pinching operation of the operation portion 18e.

It is a perspective view which shows the stopper with a cap as embodiment of this invention. It is a front view which shows the stopper with a cap. It is a top view which shows a stopper with a cap. It is a left view which shows a stopper with a cap. It is a right view which shows the stopper with a cap. It is a rear view which shows the stopper with a cap. It is a bottom view which shows the stopper with a cap. It is a front sectional view showing a state in which the stopper with a cap is cut along a plane including the axis of the sheath and the axis of the screw and viewed from the front. It is a figure which shows the use condition of the stopper with a cap in the isolation | separation construction of a covering overhead wire. It is a figure which expands and shows the cutting | disconnection edge part of the covering overhead wire to which the stopper with a cap was attached. It is a figure which shows the use condition of the conventional stopper and cap in the cutting work of a covering overhead wire. It is a figure which expands and shows the cutting end part of the covering overhead wire with which the conventional stopper and the cap were attached. FIG. 13A is a side view showing a conventional cap, and FIG. 13B is a front view showing the conventional cap.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stopper with cap 2 Main body 3 Movable gripping part 4 Screw shaft part 5 Operation part 6 Sheath part 9 Covered wire 10 Covering part 11 Core wire 21 Fixed gripping part

Claims (2)

A main body having a fixed gripping portion;
A movable gripping part that is driven back and forth with respect to the fixed gripping part of the main body;
A screw shaft portion that is screwed into the main body and connected to the movable gripping portion, is rotatable with respect to the movable gripping portion, and is integrally movable in the axial direction;
An operation unit connected to the screw shaft part and receiving an operation of rotating the screw shaft part;
A stopper with a cap, comprising: a sheath portion fixed to the main body so that an opening faces a gripping space between the fixed gripping portion and the movable gripping portion. The stopper with a cap according to claim 1,
A stopper with a cap, wherein the sheath portion has a flange at an end portion on the opening side, and the flange is screwed to a side surface of the main body.