JP2005287116A - Auxiliary pushing tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an auxiliary pushing tool capable of facilitating work for applying a protective tube over a wire by assisting work for inserting the wire into the end of the protective tube to be interiorly fitted. <P>SOLUTION: In the auxiliary pushing tool 50 used in work for inserting a wire D into a protective tube 103 to be interiorly fitted by enlarging the gap between cutting parts 105 of the tubular protective tube 103, a member 51 formed with a part 52 for supporting the outer surface of the protective tube 103 on the side opposite to the cutting part 105, and a member 61 for pushing the wire D into the protective tube 103 by moving a pushing part 62 extending toward the supporting part 52 relatively in the extending direction are fixed to forward ends 32b and 33b at the grip 31 of a plyer 30. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an insertion assisting tool, and more particularly, to an insertion assisting tool that is used when an electric wire installed in a place where a large-scale device cannot be used is inserted into a protective tube.

In the past, to prevent electric shocks from being touched during work such as construction, or damage to the wires themselves, the existence of wires that should not be touched before construction is recognized. In order to make it easier to call attention, a protective tube is put on. When such a protective tube is attached to an electric wire, it is known to use a protective tube desorption device. This protective tube desorption device requires the protective tube to be attached to the electric wire supplying power while ensuring insulation from the operator. The apparatus main body is attached to (for example, refer patent document 1, 2).
JP 2000-197225 A JP 2003-47115 A

  Such a protective pipe detaching device is a large-scale device equipped with a hydraulic motor, and when it is necessary to protect a long distance electric wire, the electric wire is inserted into the protective tube while connecting the protective tube. It is mainly used for interior decoration.

  However, the electric wire that needs to be protected by being inserted into the protective tube is not limited to this. For example, as shown in FIG. 9, a protective tube is also attached to the electric wire D connected to the transformer 102 installed at the upper part of the utility pole 101. It may be necessary to cover and protect. Even in such a case, it is difficult to use a large protective tube detaching device, and there are cases where it cannot be used in a narrow work space. Further, the electric wire D may be broken if a heavy device such as a protective tube desorption device is loaded.

  For this reason, the electric wire D may be manually covered with, for example, the protective tube 103 having a simple structure shown in FIG. In this case, since a high voltage is also flowing through the electric wire D connected to the transformer 102 and the like, it is necessary to wear an insulating protective device when the power supply cannot be stopped. However, it is preferable to realize the operation of covering the electric wire D with the protective tube 103 while ensuring insulation from a remote position, as in the case of the protective tube attaching / detaching device, rather than wearing the protective device for insulation.

  Here, the protective tube 103 has a split portion 105 for inserting the electric wire D cut into the outer peripheral surface, and a flange 107 is formed in the split portion 105. On the other hand, since the length of the electric wire D of the transformer 102 is various, the protective tube 103 is cut to an arbitrary length for use. For this reason, the flange 107 also exists in the split portion 105 of the end portion 103a of the protective tube 103. Excluding this flange 107 requires a great amount of labor. As a result, there is a risk of inconvenience that the wire D is inadvertently disconnected from the electric wire D.

  From this, since the auxiliary tool which implement | achieves the operation | work which puts the protective tube 103 on the electric wire D from a remote position easily, for example, attaches to the electric wire D and uses it, a protective tube to the edge part of the electric wire D is used. In the case where the work for covering 103 cannot be performed, it is necessary to separately insert the electric wire D into the end portion 103a of the protective tube 103 where the brim 107 exists as it is. For this purpose, it is necessary to push the brim 107 of the split portion 104 to allow the electric wire D to enter the protective tube 103. At the end 103a of such a protective tube 103, there is a problem that it is difficult for the electric wire D to enter, and that if the electric wire D is pulled in an unreasonable direction, the electric wire D is damaged.

  In short, it is necessary to allow the electric wire D to smoothly enter the end portion 103a of the protective tube 103 even when an operation for easily covering the electric wire D with the protective tube 103 from a remote position is realized.

  Therefore, the present invention realizes a simple auxiliary tool that assists the work of inserting and inserting the electric wire into the end of the protective tube, thereby facilitating the insertion operation of the electric wire covering the protective tube. The purpose is to provide ingredients.

  1st invention of the pushing auxiliary tool which solves the said subject expands between the split parts cut in the extension direction of the protection pipe formed in the cylinder shape, and has an electric wire in an interior state in the protection pipe A pushing aid used for insertion into a support tube, a support portion for supporting an outer surface opposite to the split portion of the protective tube, and a push portion extending toward the support portion and relatively moving in the extending direction And a section.

  In this invention, an electric wire can be pushed in with a pushing part between the split parts of the opposite side protection pipe, supporting a protection pipe with a support part. Therefore, for example, since an auxiliary tool that realizes an operation for easily covering the electric wire with the protective pipe from a remote position is a tool that is used by being attached to the electric wire D, the protective pipe end portion that cannot be expanded with the auxiliary equipment However, the electric wire can be pushed between the split portions so that the interior of the protective tube can be made.

  In addition to the specific matter of the first invention, the second invention of the pushing assist tool that solves the above-described problem is that when the pushing portion is located in the vicinity of the split portion of the protective tube supported by the support portion, It is formed so that it may become the attitude | position extended in the approach direction between this split part.

  In this invention, the pushing portion can be pushed straight between the split portions of the protective tube while the pushing portion is directed straight to the support portion. Therefore, it is possible to efficiently push the electric wire between the split parts and apply the internal state in the protective pipe without applying unnecessary force.

  In addition to the specific matters of the first or second invention, the third invention of the pushing assist tool that solves the above-described problem is that one or both of the support part and the pushing part is in contact with the protective tube or the electric wire. The surface is formed in a shape along the outer surface.

  In this invention, it can hold | maintain with the contact surface of the shape along an outer surface, without letting a protective tube and an electric wire escape, and can push an electric wire between the split parts of a protective tube. Therefore, it is possible to efficiently push the electric wire between the split parts and apply the internal state in the protective pipe without applying unnecessary force.

  In addition to the specific matters of any of the first to third inventions, a fourth invention of a pushing assist tool that solves the above-mentioned problems is characterized in that the support part and the pushing part are mutually connected at the tip of a tool that ensures insulation. It is characterized by being attached to the tool so as to be close to or separated from each other.

  In the present invention, the support portion and the push-in portion can be brought close to and separated from each other at the tip of the tool while ensuring insulation. Therefore, it is possible to operate the electric wire from the remote position without stopping the power supply and to put the electric wire in the protective tube.

  According to the present invention, for example, even when the protective tube end cannot be expanded, the protective tube end can be supported by the support portion and the electric wire can be pushed together with the push portion between the split portions. The work of inserting the electric wire into the interior state can be completed.

  At this time, the posture of the push-in portion that pushes the electric wire between the split portions of the protective tube is made straight with respect to the support portion, and the protective tube and the electric wire are supported or pushed in a shape along the outer surface, thereby efficiently. The electric wire can be pushed between the split portions to be in the protective tube. Moreover, by attaching the supporting part and the pushing part to a tool capable of ensuring insulation, the active wire connected to the transformer or the like can be operated from a remote position and covered with a protective tube to be in an interior state.

  Therefore, it is possible to easily push the electric wire into the end of the protective tube so that it is in the interior state, and to expand the space between the split portions of the protective tube so that the operation of inserting the electric wire into the internal state can be completed smoothly. Can do.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, the best embodiment of the invention will be described with reference to the drawings. FIG. 1 and FIG. 2 are diagrams for explaining an embodiment of a pushing aid according to the present invention.

  In FIG. 1, for example, the pushing assisting tool 50 covers the protective tube 103 shown in FIG. 10 from a remote position without stopping the power supply to the electric wire D of the transformer 102 installed on the upper part of the utility pole 101 shown in FIG. 9. When the work is performed, it is used together with the insertion assisting tool shown in FIGS. 4 to 7 to assist the work so as to facilitate the work.

  Here, the protective tube 103 is formed in a bellows-like tube shape in which the body portion 104 can be bent freely. In the extending direction of the outer surface of the body portion 104, a slit-like shape is inserted so that the electric wire D can be inserted. A split portion 105 is formed. Further, on both sides of the split portion 105 of the protective tube 103, a leg portion 106 is formed to extend outward in order to ensure insulation from the electric wire D to be installed. The flange 107 is formed so as not to be easily detached from the electric wire D installed by wind or the like, and has a structure in which they are assembled with each other. Since the length of the electric wire D to be mounted varies widely, the protective tube 103 is used after being cut to an arbitrary length. In the present embodiment, the bellows-shaped cylindrical protective tube 103 is described as an example. However, the present invention is not limited to this, and can be optimally used for an operation in which a simple cylindrical protective tube is covered with an electric wire or the like. Needless to say.

  The pushing assisting tool 50 is manufactured by using a so-called Yatco 30 which is a general-purpose tool for grasping and operating various members, and is shown in FIG. The support member 51 and the pushing member 61 can be detached and used.

  The Yatco 30 includes a grip part 31 that grips various members, a support bar 35 that an operator grips to bring the grip part 31 to a work place, a transmission bar 36 that transmits a force for operating the grip part 31, A handle 37 for operating the gripping portion 31 by transmitting the user's operation to the transmission rod 36, an umbrella cover 38 for dripping moisture from the gripping portion 31 side, and an insulating work from the electric wire D are performed safely. An umbrella cover 39 indicating a limit position to be obtained is provided, and the whole is made of an insulating material such as plastic or rubber material to ensure insulation.

  Briefly, the grip portion 31 of the Yatco 30 is formed in an arc shape and fixed to the support rod 35, and is similarly formed in an arc shape and connected to the transmission rod 36. And a movable member 33 pivotally supported about a pivot shaft 32a on the stationary member 32 side. The movable member 33 of the grip portion 31 is made of a stationary member by an elastic material such as a spring (not shown). It is biased in a direction away from 32. When the operator grasps the support rod 35 and the handle 37, the transmission rod 36 is pulled and the movable member 33 of the grasping portion 31 rotates so as to approach the immovable member 32, thereby grasping various members. be able to.

  The support member 51 has a support portion 52 that receives and supports the outer peripheral surface on the opposite side (back surface side) of the split portion 105 of the protective tube 103, and the support member 52 at a position where the stationary member 32 of the grip portion 31 of the YATCO 30 is extended. A support extension plate 53 for holding 52, and a support attachment portion 54 for attaching the support extension plate 53 to the distal end portion 32 b of the immovable member 32 of the grip portion 31.

  The pressing member 61 includes a pressing portion 62 that presses and presses the outer peripheral surface of the electric wire D, a pressing extension plate 63 that holds the pressing portion 62 at a position where the movable member 33 of the grip portion 31 of the YAT 30 is extended, and the pressing extension. A pressing attachment portion 64 that attaches the plate 63 to the distal end portion 33 b of the movable member 33 of the grip portion 31.

  The support portion 52 is formed in an arc shape having an inner surface (abutment surface) 52a having substantially the same diameter so as to follow the outer peripheral surface of the body portion 104 of the protection tube 103, and the split portion 105 of the protection tube 103 is on the upper side. The body portion 104 can be sat and supported in a facing posture.

  The push-in part 62 is formed in such a length that it can be inserted between the split part 105 (leg part 106) of the protective tube 103 supported by the support part 52 and into the body part 104, The pusher extension plate 63 is fixed to the distal end portion so as to extend toward the split portion 105 (support portion 52) of the protective tube 103. Moreover, the front-end | tip part of this pushing part 62 is formed in the circular arc shape which has the inner surface (contact surface) 62a of substantially the same diameter so that the outer peripheral surface of the electric wire D to push in may be followed.

  The support extension plate 53 and the push-in extension plate 63 extend the distal end portion of the grip portion 31 of the Yatco 30 to such a length that the protective tube 103 (the trunk portion 104 and the leg portion 106) can be positioned therebetween, respectively. The support portion 52 and the push-in portion 62 are set to such a length that they can be brought into and out of contact with each other by the movement of the immovable member 32 and the movable member 33 of the grip portion 31.

  In particular, the push extension plate 63 protects the push-in portion 62 when the push-in portion 62 pushes the electric wire D between the split portions 105 (leg portions 106) of the protective tube 103 supported by the support portion 52 (closer to the vicinity). With respect to the split direction between the split parts 105 of the tube 103 (the gap direction of the leg part 106), the pushing part 62 is bent so as to be in a posture to enter straightly.

  The support attachment portion 54 and the push-in attachment portion 64 are provided with attachment plates 54a and 64a facing the base end portions of the support extension plate 53 and the push-in extension plate 63, and a butterfly screw 54b that is threadably engaged with the attachment plates 54a and 64a. 64b, and the butterfly 32 is inserted so that the stationary member 32 of the grip portion 31 of the Yatco 30 and the distal end portions 32b, 33b of the movable member 33 are sandwiched between the base end portion and the mounting plates 54a, 64a. The screws 54b and 64b are fixed by screwing.

  As a result, as shown in FIG. 2, while the protection tube 103 is supported by the support portion 52 of the support member 51, the pushing portion 62 of the pushing member 61 is directed toward the electric wire D positioned between the split portions 105 of the protection tube 103. The electric wire D can be pushed into the protective tube 103 and inserted into the interior state. At this time, the support portion 52 and the push-in portion 62 are formed in close contact with the outer peripheral surface of the protective tube 103 and the electric wire D, so that the protective tube 103 and the electric wire D can be held so as not to escape. The operation of pushing the electric wire D into the tube 103 can be reliably performed. Further, the pushing portion 62 can push the electric wire D into the protective tube 103 straightly toward the support portion 52. Therefore, the operation of pushing the electric wire D into the protective tube 103 can be efficiently performed by operating the Yatco 30 from a remote position and without using unnecessary force, and the insertion of the electric wire D into the protective tube 103 can be performed. Work can be done easily.

  Moreover, as shown in FIGS. 4-6, the insertion auxiliary tool 10 used simultaneously is constructed | assembled so that it can attach or detach with the electric wire D by a clip system, and a pair of main body member 11, the connection member 12, and The torsion spring (biasing means) 13, the plurality of roller members 14, the plurality of support members 15, and the hook string 16 are assembled and produced.

  The main body member 11 is formed in a shape that each bends a pair of flat plate materials into a "<" shape, and is connected to each other by a connecting member 12 so that the intermediate corner portions thereof are rotatable. . The main body member 11 extends to one end side (lower side in FIG. 4) centering on the connecting member 12, and has a sandwiching portion (expanding member) 21 that sandwiches an object as a clip, and the connecting member 12 as a center. And a pinch portion (extension member) 22 that extends to the other end side (upper side in FIG. 4) and is pinched to separate the pinching portions 21 from each other. The connecting member 12 is composed of, for example, general-purpose bolts 12a and nuts 12b so as to function as a shaft member. The connecting member 12 penetrates the both side surfaces of the main body member 11 as rotating shafts, and the main body members 11 are connected to each other. It connects so that it can rotate freely. The torsion spring 13 is attached so that the connecting member 12 passes through the body portion 13a and the leg portion 13b is positioned between the knob portions 22 of the main body member 11, and the knob portions 22 are connected to each other. The urging is performed in the direction of separation, and the sandwiched portions 21 of the main body member 11 are brought close to each other by the elastic force.

  Thereby, the main body member 11 can position the electric wire D between the pinching portions 21 by pinching the knob portion 22 in a direction in which the knob portion 22 approaches each other against the elastic force of the torsion spring 13. By releasing the force, the electric wire D can be held between the pinching portions 21 by the elastic force of the torsion spring 13. Similarly, the main body member 11 can be removed by removing the electric wire D from between the pinching portions 21 by pinching the picking portions 22 in a direction in which the picking portions 22 approach each other.

  The sandwiching portions 21 of the pair of main body members 11 are extended to one lateral outer side (the left outer side in FIG. 4), and an interrupting surface 21a that brings the outer surfaces (expanded surfaces) close to each other, and the other side surface. And a closing surface 21b that bends in a direction close to each other so as to be closed. On the interruption surface 21a of the pinching portion 21, an upper positioning portion 21c that is cut out in an arc shape so as to be positioned with the electric wire D being pinched is formed on the upper end side (side adjacent to the knob portion 22). On the other hand, on the side of the closing surface 21b, a lower positioning portion 21d is formed that opens the closing surface by being removed so as to be positioned with the electric wire D sandwiched between the lower portion (side away from the knob portion 22).

  Further, the sandwiching portions 21 of the pair of main body members 11 are guide ribs (guides) protruding in a rib shape parallel to the connecting member 12 on the side away from the knob portion 22 from the tip of the interrupt surface 21a to the vicinity of the closing surface 21b. Part) 23 is continuously provided.

  As a result, the sandwiching portion 21 can be inserted and interrupted between the split portion 105 of the protective tube 103 with the interrupt surface 21a narrowed at the tip side as the entrance side, and the protective tube 103 is gradually inserted by the interrupt surface 21a. Can be separated from each other. And this clamping part 21 gets over the split part 105 of the protection pipe | tube 103 by making the closing surface 21b into an exit side, maintaining the state expanded by the extended surface 21e of the outer surface continuous from the interruption surface 21a. (Passing through) the closing portion 105 can be closed. A guide rib 23 is located inside the protective tube 103, and the protective tube 103 can be guided in a state of sliding contact (engagement) while the guide rib 23 faces the inner surface of the split portion 105. .

  At this time, when the electric wire D is sandwiched and held in the pinching portion 21, the electric wire D is rotated or slid by the upper positioning portion 21c on the distal end side of the interrupt surface 21a and the lower positioning portion 21d by the closing surface 21b. It is positioned so as not to be displaced even when a force in the direction to be applied is applied, and is positioned obliquely with respect to the guide rib 23 at the lower portion of the sandwiching portion 21. For this reason, when the protective pipe 103 is relatively moved toward the closing surface 21b side while the split part 105 is expanded by the interrupting surface 21a of the sandwiching part 21, the protective pipe 103 has an inner surface of the split part 105 on the interrupting surface 21a. The guide is slidably brought into contact with the guide rib 23 approaching the electric wire D toward the closing surface 21b side and guided while being restricted. Here, since the pinching portion 21 holds the electric wire D at the two positions of the positioning portions 21c and 21d, it is relatively easy to rotate around the electric wire D and adjust the mounting posture so that it can be easily operated. Needless to say, you can. That is, the rotation here refers to rotation in a direction in which the guide rib 23 for guiding the protective tube 103 is parallel to the electric wire D.

  That is, as shown in FIG. 7, when the protective tube 103 is guided by the guide rib 23 so as to be inclined with respect to the electric wire D, and the split portion 105 gets over the sandwiching portion 21, the protective tube 103 is moved from the position along the electric wire D from the position. It is guided so as to be displaced to a position where the electric wire D is installed. Therefore, after the grip portion 22 is pinched and the pinching portion 21 is attached to the electric wire D without performing an unreasonable operation such as manually inserting the split portion 105 of the protective tube 103 and inserting the electric wire D, The electric wire D can be inserted into the interior and installed in the interior simply by interrupting the interrupting surface 21a of the pinching portion 21 into the split portion 21a of the protective tube 103 and sliding (relatively moving) the protective tube 103. it can.

  Furthermore, the pinching portions 21 of the pair of main body members 11 are provided with roller members 14 so as to extend along the widened surface 21e from the interrupt surface 21a to the continuous closing surface 21b (so as to constitute the widened surface 21e). The roller member 14 is juxtaposed so that the sliding direction of the protective tube 103 that moves relative to the split portion 105 while expanding the slit portion 105 coincides with the rotational direction. Further, like the roller member 14, a support member 15 is provided in the pinching portion 21 along the expanded surface 21 e, and the support member 15 is parallel to the roller member 14. Are in parallel.

  As shown in FIG. 5 and FIG. 6B, the roller member 14 of the pinching portion 21 is continuous with the interrupt surface 21a and is arranged on the outside so that the outer peripheral surface protrudes between the column members 15. The split portion 105 of the protective tube 103 is received from the interrupt surface 21a, and the split portion 105 of the protective tube 103 is received so that it does not slide on the support member 15. Thereby, the protection tube 103 can be relatively moved with respect to the sandwiching portion 21 with a small force even in a state where the protection tube 103 is greatly expanded, and can be smoothly slid in the direction in which the electric wire D is installed.

  As shown in FIG. 5B and FIG. 6B, the support member 15 of the sandwiching portion 21 is disposed on the inner side of the roller member 14 and is positioned and held by the positioning portions 21c and 21d. D can be held and held at the same time. Thereby, in addition to positioning the electric wire D by the positioning portions 21c and 21d, the pinching portion 21 is positioned and held so that the column member 15 does not rotate or move in two places in the extending direction of the electric wire D. can do.

  On the other hand, the knob portion 22 of the pair of main body members 11 has a non-slip rubber material attached to the outer surface side, and a hook string 16 that can be hooked on other tools or the like is attached. Yes.

  As a result, as shown in FIG. 3, the knob portion 22 is pinched so that the support member 51 and the pushing member 61 are not slipped by using the hook 30 that is not attached to the grip portion 31, and the pinching portion 21 is held between the electric wires D. It can be attached and detached, and it is possible to avoid dropping the insertion assisting tool 10 even if it is slipped by hooking the hook string 16 into the grip portion 31 of the yatco 30 just in case. can do.

  Therefore, the insertion assisting tool 10 is held by the gripping portion 31 of the Yatco 30 to the vicinity of the electric wire D of the transformer 102 installed at the upper part of the power pole 101 at a remote position while the pinching portion 21 is widened. The insertion portion 10 can be easily attached to the electric wire D without stopping the power supply. Thereafter, similarly, the guard tube 103 is grasped by the Yachto 30 and the interrupting surface 21a of the sandwiching portion 21 of the insertion assisting tool 10 is inserted between the split portions 105 from the end side to be interrupted, as shown in FIG. In addition, the roller member 14 can smoothly slide and slide it while expanding the split portion 105 of the protective tube 103. When the protective tube 103 is guided while being restricted from being detached by the guide rib 23 from the inner surface of the split portion 105, when the split portion 105 gets over the sandwiching portion 21 of the insertion assisting tool 10 and closes, It will be in the state which equips the electric wire D which existed in the position which follows.

  If the insertion assisting tool 10 can be attached only to the range where the protective tube 103 is covered during this operation, the electric wire D in that range needs to be inserted into the split portion 105 after the insertion assisting tool 10 is removed. There is. In this case, as shown in FIG. 2, using the pushing aid 50, the protective tube 103 is supported by the support portion 52 of the support member 51, and the electric wire D positioned between the split portions 105 is connected to the push member 61. By pushing straight by the pushing portion 62, the interior of the protective tube 103 can be smoothly made without damaging the electric wire D. Therefore, the protective tube 103 can be easily put on the electric wire D while ensuring safety, without using an unreasonable manual operation.

  As described above, in the present embodiment, even when the electric wire D cannot be inserted by the insertion assisting tool 10 up to the end portion 103a of the protective tube 103, the remaining electric wires are used by using the pushing assisting tool 50 from a remote position. It is possible to smoothly complete the operation of pushing D into the protective tube 103 to make the interior state.

  In addition, as another aspect of this embodiment, as shown in FIG. 8, as the support attachment portion 54 and the push attachment portion 64, the stationary member 32 of the grip portion 31 of the YATCO 30 and the distal end portions 32 b and 33 b of the movable member 33. May be provided at the base end portions of the support extension plate 53 and the push extension plate 63 and fixed by the thumbscrews 54b and 64b. In this case, since the side surfaces of the distal end portions 32b and 33b of the grip portion 31 of the Yatco 30 are closed, the attachment members 54c and 64c of the support extension plate 53 and the push extension plate 63 are about to rotate. Can be limited.

  Although one embodiment of the present invention has been described so far, it is needless to say that the present invention is not limited to the above-described embodiment, and may be implemented in various forms within the scope of the technical idea.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the schematic whole structure of one Embodiment of the pushing assistance tool which concerns on this invention, and is the top view. It is a partially expanded plan view which shows the principal part of the pushing assistance tool. It is a partially expanded plan view which shows the general purpose tool utilized as the pushing assistance tool. It is a figure which shows the insertion auxiliary tool used simultaneously, and is the elevation view. It is a figure at the time of making FIG. 4 the front view of the insertion assistance tool, (a) is a left view, (b) is a right view. It is a figure at the time of making FIG. 4 of the insertion assistance tool into a front view, (a) is a top view, (b) is a bottom view. It is a figure explaining use of the insertion auxiliary tool. It is a top view which shows the tool which grasps the expansion aid, the insertion aid, etc. It is an elevation view which shows the electric wire inserted in a protection tube by the expansion assistance tool or insertion assistance tool. It is a figure which shows the protective tube which covers an electric wire with the expansion assistance tool or insertion assistance tool, (a) is the top view, (b) is the longitudinal cross-sectional view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Insertion aid 11 Main body member 12 Connection member 13 Torsion spring 14 Roller member 15 Strut member 16 Hooking string 21 Clamping part 21a Interrupting surface 22 Picking part 23 Guide rib 30 Yatco 31 Grabbing part 37 Handle 50 Pushing auxiliary tool 51 Support member 52 Supporting part 61 Pushing member 62 Pushing part 103 Protective pipe 104 Body part 105 Split part D Electric wire

Claims (4)

A pushing aid that is used to expand the space between the split parts cut in the extending direction of the protective pipe formed in a cylindrical shape and insert the electric wire into the interior of the protective pipe,
A pushing aid, comprising: a supporting portion that supports an outer surface opposite to the split portion of the protective tube; and a pushing portion that extends toward the supporting portion and relatively moves in the extending direction.   The pushing portion is formed so as to have a posture extending in an approaching direction between the split portions when positioned in the vicinity of the split portion of the protective tube supported by the support portion. The pushing aid according to claim 1.   The pushing aid according to claim 1 or 2, wherein one or both of the support part and the pushing part has a contact surface in contact with the protective tube or the electric wire formed in a shape along the outer surface.   The pushing support tool according to any one of claims 1 to 3, wherein the support part and the pushing part are attached to the tool so as to be close to and separated from each other at the tip of the tool in which insulation is ensured. .

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