JP5250353B2 - Insulation cover for overhead distribution lines, assembly structure of overhead distribution lines, and installation method of insulation covers for overhead distribution lines - Google Patents

Description

  The present invention relates to an aerial distribution line cover that covers a connection part or a branching part of an aerial distribution line, an assembly structure of an aerial distribution line using the aerial distribution line cover, and a mounting method of an insulation cover for an aerial distribution line. Is an aerial wire insulation cover having a pair of cover plate portions that change direction between a state where they are deployed side by side and a closed state that faces each other in parallel with a certain interval. The present invention relates to an assembly structure of an aerial distribution line in which connected connecting members are set and a method for attaching an insulation cover for the aerial distribution line.

  The holding part and branching part of the overhead distribution line installed on the utility pole etc. are connected by connecting members for connecting the electric wires to both ends, and this connection member is an insulation cover for overhead wires (hereinafter mainly referred to as “insulation cover”). It is covered by. For example, Patent Document 1 discloses an insulating cover as shown in FIG.

  In this insulating cover, a pair of substantially rectangular cover members 111 and 112 are juxtaposed, and a belt-like hinge 113 is connected to the inner long sides of the cover members 111 and 112 facing each other. 111 and 112 can be freely opened and closed. A required number of engagement pieces 114 are formed on the outer long side portion of one cover member 111, and a required number of engagement holes 115 are formed on the outer long side portion of the other cover member 112. The engagement piece 114 and the engagement hole 115 can be engaged with each other. A plurality of elastic protrusions 116 that support the connection member are provided on the inner surfaces of the cover members 111 and 112.

  The insulating cover is externally fitted while the connection portion between the overhead distribution line and the branch line is addressed to the elastic protruding piece 116 in a state where the pair of cover members 111 and 112 are opened, and both the cover members 111 and 112 are fitted. Is assembled by engaging the engagement piece 114 and the engagement hole 115.

Japanese Patent Laid-Open No. 11-318015

  In the connection portion of the overhead distribution line, a dedicated insulating cover is used according to the voltage class and the connection form, and the connecting member is set in the insulating cover. However, various types of connection members are provided, and a branch sleeve or a branch connector is used at the branch portion of the overhead distribution line, and a branch sleeve or a jumper sleeve is used at the retaining portion.

  Therefore, many types of insulating covers are manufactured to suit various connecting members, and business operators store a large number of various types of insulating covers and select them appropriately from the stored large numbers according to the usage situation. . However, manufacturing a variety of insulating covers contributes to an increase in cost, and storing a large number of them makes inventory management and preparation work troublesome.

  Then, this invention makes it a subject to provide the insulation cover for overhead distribution lines which can be used irrespective of the voltage class and connection form in the connection part of an overhead distribution line.

The insulation cover for an aerial distribution line according to the present invention sets either a branch connection body or a straight connection body for connecting an electric wire to both end portions at the center portion, and connects the electric wires connected to the connection member at both ends. A pair of quadrangular cover plate portions to be led out from the portion can be turned in parallel by a belt-like side plate portion at the inner edge so that the direction can be changed between a state where they are deployed side by side and a closed state where they are opposed in parallel with a certain interval. is connected, the insulating cover overhead distribution lines multiple protrusion is protruded on the inner surface of the cover plate portion, the protrusion is in contact at one point on the end face of the set branch connection body, and, The first position that comes into contact with the side surface of the set linear connection body from one side and the side surface of the electric wire connected to the linear connection body or the side surface of the electric wire connected to the branch connection body are sandwiched from both sides, and the linear connection body On the end face Projecting from the second position abutting at point, the first position and the second position is characterized in that are provided at both ends of the at least one cover plate portion.

  According to this insulation cover for aerial distribution lines, the connecting member connecting the wires is set at the center of one of the cover plates that are deployed in parallel, and the other cover plate is parallel to the one cover plate. It changes to a closed state opposite to the first and is used in a closed state, but the projecting piece protrudes at one of the first position and two of the second position. And the second position are provided at both ends of the cover plate portion, so that the connecting member connects the electric wire to both ends, such as a cylindrical shape, S shape, B shape, C shape, Z shape, L shape, etc. It is possible to set a branch sleeve, a branch connector, or a jumper sleeve.

  That is, since the branch connection body is wide and shorter than the straight connection body so that two electric wires can be led out in parallel from each end face, the inner end of the projecting piece at the first position Is brought into contact with the end face of the branch connector at one point, and the two protruding pieces in the second position are positioned by sandwiching the electric wire connected to the branch connector from both sides. In addition, when two electric wires are connected in parallel to one end of the linear connector, positioning is also performed when the projecting piece at the first position is sandwiched between the two electric wires.

  In addition, since the straight connection body is one in which one electric wire is led out from each end surface and is thinner and longer than the branch connection body, the inner end of the projecting piece at the second position is a straight connection body. The projecting piece at the first position comes into contact with the side face of the linear connector from one side and is positioned at one point.

  Moreover, in the insulation cover for an aerial distribution line according to the present invention, it is preferable that the protruding piece at the second position protrudes in a C shape whose interval is widened toward the edge of the cover plate portion. .

  According to this insulation cover for an overhead distribution line, when the peeled portion where the core wire of the electric wire protrudes from the insulating covering is exposed at a position adjacent to each end face of the linear connector, the second position 2 The projecting piece is in contact with the end face of the linear connecting body at two points with the inner end sandwiching the core wire of the peeled portion, and the intermediate portion of the two projecting pieces contacts the edge of the insulating covering. The connecting body can be positioned. Further, the outer protruding piece of the second position is positioned on the lower side in use, and the outer end side is directed downward, so that the bent electric wire can follow the outer protruding piece.

  In the overhead cover for the overhead distribution line according to the present invention, the cover plate portion has an inner wall-shaped portion for setting a watertight member on the outer side of the projecting piece projecting at the second position. It is preferable that it is provided along each edge.

  According to this insulation cover for overhead distribution lines, the watertight member can be set between the protruding piece projecting at the second position and the inner wall portion, and by setting the watertight member, Set the connected branch connection body to secure the water tightness in the insulation cover for overhead electric wires where both cover plate parts are closed, and prevent dust etc. from entering (hereinafter simply referred to as “water tightness” Can only be secured ”).

  Moreover, in the insulation cover for an aerial distribution line according to the present invention, the foam having an adhesive layer on the surface and an indefinite shape between the projecting piece projecting at the second position and the inner wall portion. A watertight member in which an adhesive putty is partially overlapped in a band shape can be set.

  According to this insulation cover for overhead power distribution lines, the watertight member is formed by partially overlapping the foam and putty in a band shape, and the foam is temporarily fixed by providing the adhesive layer on the surface of the foam. The pair of cover plate portions can be closed without being displaced after setting. Furthermore, in a state where the pair of cover plate portions are closed, the putty is in close contact with the electric wire, and water tightness can be ensured.

  In the insulation cover for an aerial distribution line according to the present invention, an adhesive putty that surrounds two wires connected in parallel to the branch connection body and fills a gap between the two wires, and the putty It is preferable that a watertight spacer for branching that holds two electric wires and a watertight member interposed between the watertight spacer for branching and the cover are provided.

  According to this insulation cover for overhead distribution lines, even if the distance between the two wires is narrow, the gap is filled with an adhesive putty, and the two wires are held by the branch watertight spacer via the putty, The watertight member is interposed between the watertight spacer for branching and the cover in the closed state, thereby ensuring the watertightness in the insulation cover for the overhead wire even if the two wires are led out at a narrow interval. be able to.

  Moreover, in the insulation cover for an aerial distribution line according to the present invention, it is preferable that a protrusion is projected inwardly on an outer edge of each cover plate portion.

  According to this insulation cover for aerial distribution lines, in a state where the pair of cover plate portions are closed, the top portions or the side surface portions of the respective ridges can be overlapped to be in a closed state.

  Moreover, in the insulation cover for an aerial distribution line according to the present invention, it is preferable that an at least one cover plate portion is attached with an indeterminate and sticky putty on the outer edge.

  According to this insulation cover for overhead distribution lines, the watertightness of the outer edge portions of both cover plate portions is ensured by the putty that is attached to the outer edge of at least one cover plate portion and has an indeterminate shape. Can do.

  Moreover, in the insulation cover for an aerial distribution line according to the present invention, it is preferable that a gripping portion protrudes from an outer edge of at least one cover plate portion.

  According to this aerial distribution line insulating cover, the gripping portion is stably and reliably gripped by a gripping tool such as a Yatsuko. And an operator can approach an insulation cover stably to the construction location of the connection member which is separated from an operator by holding a holding part with a holding tool.

  Moreover, the assembly structure of the aerial distribution line according to the present invention in which the branch connection body in which one electric wire is connected to one end and two electric wires are connected to the other end is set on the insulation cover for the aerial distribution line is the branch The watertight spacer for water encloses the two electric wires in the vicinity of the branch connection body through the putty having adhesiveness, and between the pair of the cover plate portions and the watertight spacer for branching which are closed in parallel to each other and A watertight member is in close contact between the pair of cover plate portions and one electric wire.

  According to the assembly structure of this overhead distribution line, a pair of covers in which two closely spaced wires are held by a branching watertight spacer via an adhesive putty and faced in parallel and closed. Since the watertight member is interposed between the end portion of the plate portion and the branching watertight spacer, the watertightness of the portion where the two electric wires are led out can be ensured. Moreover, the watertightness of this part is securable by the watertight member being closely_contact | adhered between the edge part of a pair of cover plate part, and one electric wire.

  In addition, the method for attaching an insulation cover for an aerial distribution line according to the present invention includes an aerial distribution in which a gripping portion protrudes from an outer edge of at least one cover plate portion and watertight members are set at both ends of both cover plates. A method for mounting an insulation cover for an aerial distribution line, in which a branch connection body in which one electric wire is connected to one side and two electric wires are connected in parallel to the other side is set to the electric wire insulation cover, the branch connection body Two electric wires are surrounded by a watertight spacer for branching through a putty, and the two electric wires are bound by a binding wire at a portion outside the cover plate portion, and one cover plate portion in an unfolded state The grip plate is gripped by a gripping tool, the one cover plate portion is approached to the branch connector, and the vicinity of the branch connector of one electric wire and the watertight spacer for branch are respectively covered with the cover plate. Is positioned on the watertight member, which is set at each end of the section, is characterized in that the closed both the cover plate part by turning the other cover plate portion.

  According to this method of attaching the insulation cover for overhead distribution lines, after the two wires connected to the branch connection body are surrounded by the watertight spacer for branch through the putty, the gripping tool grips one cover plate portion. The cover for the aerial distribution line is remotely operated by approaching the construction location of the branch connection body in which this one cover plate part is separated from the operator and the other cover plate part is changed in direction. Can cover the connection of the overhead distribution line. In addition, the two electric wires are bound by the binding wire at the portion that is outside the cover plate portion, so that the two electric wires are not separated from each other, and therefore, the branch watertight spacer surrounds the two electric wires. Can be maintained.

  Further, in the above-described method for attaching the insulation cover for an aerial distribution line according to the present invention, the unfolded state can be deformed into a half-folded state, and one end is a gripping part protruding from the other end in the half-folded state. Using the branching watertight spacer, the gripping part of the branching watertight spacer with the putty attached to the inner surface in the unfolded state is gripped by the gripping tool, and the branching watertight spacer is attached to the two wires near the branch connector. The watertight spacer for branching was folded in half with another gripping tool, the two wires were bound by the binding wire at the outer part of the cover plate part, and the watertight spacer for branching folded in half was strongly tightened Preferably, this includes twisting the gripping portion of the branching watertight spacer above.

  According to this method of attaching the insulation cover for an overhead distribution line, the watertight for branching that can be deformed from the unfolded state into a half-folded state, and in which the one end is projected from the other end in the half-folded state By using the spacer, the watertight spacer for branching can be surrounded by two electric wires by remote work.

  According to the present invention, the one position of the first position that contacts the end surface of the set branch connection body and the side surface of the set straight connection body and the electric wire connected to the straight connection body Overhead distribution line insulation cover sandwiched and projecting projecting pieces at two locations of the second position that contact the end face of the straight connection body, assembly structure of the overhead distribution line, and method of attaching the insulation cover for the overhead distribution line Is provided, the connecting member can be set regardless of whether it is a branch connection body or a straight connection body. Therefore, the present invention can reduce the cost of products, inventory management and preparation work.

  1 to 7 for an embodiment of an insulation cover for overhead distribution lines (hereinafter, mainly referred to as “insulation cover”), an assembly structure of the overhead distribution lines, and a method of attaching the insulation cover for overhead distribution lines according to the present invention. While explaining.

  As shown in FIG. 1, the insulating cover includes a pair of quadrangular cover plate portions 1 and 2 arranged in parallel, and a state in which the insulating cover is closed in parallel with a constant interval as shown in FIG. Are connected at the inner edge by the belt-like side plate portion 3, and these 1, 2, 3 are integrated. A plurality of projecting pieces 4a and 4b for positioning the connecting members 11 and 12 are provided on both end portions 1a, 1a, 2a and 2a on the inner surfaces of the cover plate portions 1 and 2, respectively. The connection members 11 and 12 may be branch sleeves or branch connectors such as a cylindrical shape, S shape, B shape, C shape, Z shape, or L shape for connecting an electric wire to both ends, or jumper sleeves. Although it can be used, it demonstrates here as the branch sleeve 11 and the jumper sleeve 12. FIG.

  As shown in FIG. 3, the branch sleeve 11 is wider than the jumper sleeve 12 and shorter than the jumper sleeve 12 so that the two electric wires 20 and 20 can be connected in parallel. Has been. Further, as shown in FIG. 6, the jumper sleeve 12 is thinner and longer than the branch sleeve 11.

  The projecting pieces 4a and 4b are in contact with the end surface of the set branch sleeve 11 at one point, and contact the side surface of the set jumper sleeve 12 from one side and the jumper sleeve 12. The side surface of the connected electric wire 20 is sandwiched from both sides, and is protruded from a second position B that contacts the end surface of the jumper sleeve 12 at two points. The first position A and the second position B are provided at the end portions 1a, 1a, 2a, and 2a of the cover plate portions 1 and 2, respectively.

  The distance between the protruding piece 4 a at one first position A and the protruding piece 4 a at the other first position A is the same as the length of the branch sleeve 11. Further, the distance between the protruding piece 4 b at one second position B and the protruding piece 4 b at the other second position B is the same as the length of the jumper sleeve 12.

  Then, the projecting pieces 4b, 4b at the second position B are provided so as to face each other in a C shape in which the interval is widened toward the edges 1b, 2b of the cover plate portions 1, 2. The interval between the inner ends of the projecting pieces 4 b and 4 b at the second position B is the same as the diameter of the core wire 22 protruding from the insulating covering body 21 of the electric wire 20. Further, the middle part of the projecting pieces 4 b, 4 b at the second position B is in contact with the edge of the insulating covering 21 of the electric wire 20.

  The height of each of the projecting pieces 4a and 4b is half the height of the connecting members 11 and 12, and the projecting pieces 4a and 4b project from the cover plate portions 1 and 2, respectively. The projecting pieces 4a and 4b sandwich the end surface of the branch sleeve 11 from above and below, and the electric wire 20 from above and below. Note that the protrusions 4a and 4b may be protruded only on one cover plate portion 1 by making the height of the protrusions 4a and 4b the same as the height of the connection members 11 and 12.

  And the inner side wall-like part 6 for setting the watertight member 5 between the protrusions 4b of the 2nd position B is provided along each edge 1b, 2b of each cover plate part 1,2. Yes. The inner wall portion 6 is formed by arranging a number of flexible strip-like flexible pieces 6a, 6a,. Further, the inner wall portion 6 provided on one cover plate portion 1 and the inner wall portion 6 provided on the other cover plate portion 2 face each other with a deviation by a thickness, and the top portions contact each other. Not to be.

  The watertight member 5 set between the projecting piece 4b at the second position B and the inner wall portion 6 has an elastic band-like foam 5a and an indeterminate and adhesive property. The putty 5b is partially overlapped in a band shape. The foam 5a is formed in a predetermined shape using flame-retardant polyethylene or the like, and has an adhesive layer on the surface (the surface overlapped with the cover plate portions 1 and 2). It is stuck between the outer edge and the inner wall portion 6. Further, the putty 5 b is arranged in a portion inside the inner wall portion 6 from the middle portion of the projecting piece 4 b at the second position B.

  Therefore, the watertight member 5 is formed into two layers in which the foam 5a and the putty 5b partially overlap each other in a part (the overlapping part is illustrated by a dark halftone dot). In addition, by providing the adhesive layer on the surface of the foam 5a, the foam 5a can be temporarily fixed when the cover plate portions 1 and 2 are set. The cover plate portions 1 and 2 can be closed. And in the state where a pair of cover plate part was closed, putty 5b and putty 5b stick to electric wire 20, and it can secure watertightness.

  In addition, when two electric wires 20 and 20 are connected in parallel to the branch sleeve 11, in order to ensure water tightness, as shown in FIG. The periphery is surrounded by a sticky putty 7a having adhesiveness, and this putty 7a is held by a branch watertight spacer 7b.

  The branching watertight spacer 7b is formed of a flexible resin such as a butyl rubber-based putty material or an olefin-based sealing material, and can be deformed from a flat state to a folded state. The branch watertight spacer 7b is provided with a protrusion for filling the gap between the two electric wires 20 and 20 with the putty 7a when the watertight spacer 7b is folded in half. In addition, the branch watertight spacer 7b projects in one end from the other end in a folded state, and this one end serves as a gripping part (not shown) for mounting on the electric wire by a gripping tool such as a Yatsuko. ing. This gripping part is twisted and cut off after the watertight spacer 7 for branching binds the two electric wires 20 and 20 together.

  And each edge 1b, 2b of each cover plate part 1 and 2 is provided with the outer side wall-like part 8 for preventing a bird, an insect, etc. from invading inside. The outer wall portion 8 is also formed by arranging a large number of flexible strip-like flexible pieces 8a, 8a,.

  And the protrusions 9 and 9 are provided in the outer edge 1c, 2c of each cover plate part 1,2. A step is provided on the top of the ridge 9 of one cover plate portion 1 so that the ridge 9 of one cover plate portion 1 and the ridges 9, 9 of the other cover plate portion 2 mesh. In addition, an irregular and sticky putty 5c is attached to the surface of the protrusion 9 so that the water tightness of the outer edges 1c and 2c is ensured in a state where the cover plate portions 1 and 2 are closed. Yes.

  Then, as shown in FIG. 1, engagement portions 1d and 1d for semi-enclosement project from both end edges 1b and 1b of one cover plate portion 1 and adjacent to the side plate portion 3. Yes. Further, projecting pieces 2e and 2e formed with semi-closed engagement holes 2d and 2d are provided on both end edges 2b and 2b of the other cover plate portion 2 and adjacent to the side plate portion 3, respectively. ing. By engaging the engaging portions 1d and 1d with the engaging holes 2d and 2d, the cover plate portions 1 and 2 are maintained in a semi-closed state.

  Then, a temporary fixing hole 1f and engagement holes 1g and 1g are respectively provided at the center and both ends of the outer edge 1c of one cover plate portion 1, and the outer edge 2c of the other cover plate portion 2 is provided. The center part and both end parts are provided with temporary fixing protrusions 2f and engaging protrusions 2g, 2g that engage with the temporary fixing protrusions 1f and the engaging protrusions 1g, 1g, respectively. Further, a gripping portion 2h for approaching a construction site separated from an operator stably and reliably by a gripping tool such as a yatco adjacent to one engaging protrusion 1g of the outer edge 2c of the other cover plate portion 2 is provided. Is provided. By this grip portion 2h, the insulating cover can be approached to the construction site stably from a distance.

  This insulating cover is configured as described above. Next, the case where the branch sleeve 11 and the jumper sleeve 12 are set will be described individually. However, in any case, the foam 5a including the adhesive layer is set in advance between the projecting pieces 4b, 4b at the second position B of the cover plate portions 1, 2 and the inner wall portion 6, The putty 5c is set in advance along the protrusion 9 of the cover plate portion 1, and the sticky putty 5b is a foam 5a at both end portions 1a, 2a of the cover plate portions 1, 2. And are partially overlapped in a band shape.

  When one electric wire 20 is connected to one of the branch sleeves 11 and two electric wires 20 are connected to the other (first example), as shown in FIG. 20 is held by a branching watertight spacer 7b that is folded in half from a state where it is expanded through the putty 7a, and a gap between the two electric wires 20, 20 is filled with the putty 7a.

  The branching watertight spacer 7b has a putty 7a attached to the inner surface in the unfolded state, a gripping portion gripped by a gripping tool (not shown) such as a yatco, and two electric wires 20 separated from the operator. It is along the vicinity of 20 branch sleeves 11. Then, it is folded in half by another gripping tool such as a Yatco, and surrounds the two electric wires 20 and 20 via the putty 7a and binds loosely. A gripping tool such as a Yatco is prevented from getting dirty by gripping the gripping portion.

  Then, the two electric wires 20, 20 are bound by the bind wire 30 at a portion that is outside the cover plate portions 1, 2. The two electric wires 20 and 20 are bound by the bind wire 30 at a portion that is outside the cover plate portions 1 and 2, so that the two electric wires 20 and 20 are not separated from each other. The two electric wires 20 and 20 can be surrounded and bound. Thereafter, the bifurcated branch watertight spacer 7b is firmly bound, and the gripping portion is twisted off and cut off.

  Then, when the gripping portion 2h of the other cover plate portion 2 is gripped by a gripping tool (not shown) such as a Yatco, the other cover plate portion 2 is attached to the branch sleeve 11 which is a construction location separated from the operator. Approached. And the branch sleeve 11 vicinity of the one electric wire 20 and the branch watertight spacer 7b are located on the watertight member 5 set to the other cover plate part 2, ie, the foam 5a and the putty 5b.

  Then, as shown in FIG. 3A, the protruding piece 4 a at the first position A comes into contact with the end surface of the branch sleeve 11 at one point. Further, the protruding piece 4a at the first position A is sandwiched between the two electric wires 20 and 20. Further, the projecting pieces 4 b and 4 b at the second position B are in a state of sandwiching the insulating cover 21 of the electric wire 20. In this way, the branch sleeve 11 is set in a positioned state.

  Then, when the other cover plate portion 2 is changed in direction so as to face the one cover plate portion 1 in parallel, when it is in a closed state, an assembly structure of an overhead distribution line is obtained. More specifically, a gripping tool such as a Yatco grips the gripping portion 2h of the other cover plate portion 2 while engaging the semi-closed engagement portions 1d, 1d and the semi-closed engagement holes 2d, 2d. Then, the temporary fixing hole 1f and the temporary fixing projection 2f are engaged.

  Then, by engaging the engagement holes 1g, 1g and the engagement protrusions 2g, 2g, an assembly structure in which both the cover plate portions 1, 2 are closed is obtained. In the following second to fifth examples, the assembly structure is assembled by the same method as the first example. In this assembly structure, the electric wires 20, 20, 20 are led out from both ends of the cover plate portions 1, 2 in the closed state, but the flexible pieces 6 a, 8 a of the inner wall-like portion 6 and the outer wall-like portion 8. Are bent along the electric wire 20 and the portions where the electric wire 20 is not led out are in a state where the flexible pieces 6a, 8a,.

  Further, the watertight member 5 set on one cover plate portion 1 and the watertight member 5 set on the other cover plate portion 2 overlap each other with one electric wire 20 interposed therebetween. Since the watertight members 5 and 5 are elastic and the putty 5b is indefinite and sticky, the both end portions 1a and 2a of the cover plate portions 1 and 2 are ensured to be watertight. Yes. Furthermore, since the protrusions 9 and 9 projecting from the cover plate portions 1 and 2 overlap each other with the putty 5c interposed therebetween, the water tightness of the outer edges 1c and 2c of the cover plate portions 1 and 2 is also ensured. Furthermore, since the putty 7a, the branch watertight spacer 7b, the putty 5b, and the foam 5a are interposed between the two electric wires 20 and 20 and the cover plate portions 1 and 2, the watertightness of this portion is reduced. Is also secured.

  The branch sleeve 11 is connected with one electric wire 20 on one side and two electric wires 20, 20 on the other side. Of the two electric wires 20, 20, the lower electric wire 20 is As shown in FIG. 4, it can be set as the bent state (2nd example). In this case, since the distance between the two electric wires 20 and 20 is wider than when the two electric wires 20 and 20 are led out in parallel, the water-tight member can be obtained without holding the two electric wires 20 and 20 by the branch water-tight spacer 7. It is possible to prevent a gap from being generated between the two electric wires 20 and 20 even with only 5. However, also in this second example, the two electric wires 20, 20 may be held by the branching watertight spacer 7.

  Moreover, as shown in FIG. 5, the branch sleeve 11 can also connect the electric wires 20 one step at a time (third example). Also in this case, the protruding piece 4a at the first position A comes into contact with the end surface of the branch sleeve 11 at one point. Then, the projecting pieces 4b, 4b at one second position B are in a state of sandwiching the insulating covering 21 of the electric wire 20, and the branch sleeve 11 is positioned. Also in this case, the water-tightness of the both end portions 1 a and 2 a and the outer edges 1 c and 2 c of the cover plate portions 1 and 2 is ensured by the water-tight member 5.

  Next, the case where the electric wire 20 connected to the jumper sleeve 12 is led out linearly (fourth example) will be described with reference to FIG. The jumper sleeve 12 is thinner and longer than the branch sleeve 11. Further, in the electric wire 20, the core wire 22 protrudes from the insulating cover 21, and the peeled portion 23 is exposed at a location adjacent to each end face of the jumper sleeve 12.

  When such a jumper sleeve 12 and the electric wire 20 are set on the other cover plate portion 2, the inner ends of the two protruding pieces 4 b and 4 b at the second position B are the core wires 22 of the peeled portion 23 of the electric wire 20. In such a state, the wire 20 is sandwiched so as to contact the end surface of the jumper sleeve 12 at two points, and the intermediate portion of the two pieces 4b, 4b contacts the edge of the insulating cover 21 of the wire 20. Further, the protruding piece 4a at the first position A abuts against the side surface of the jumper sleeve 12 from one side. In this way, the jumper sleeve 12 is positioned.

  And the assembly structure of an aerial distribution line is assembled by changing the direction so that both cover plate parts 1 and 2 face each other in parallel, and making it a closed state. Also in this assembled structure, the watertight member 5 sandwiches the electric wire 20 at both ends 1a and 2a, and the protrusions 9 on the outer edges 1c and 2c also sandwich the watertight member 5, thereby ensuring watertightness.

  As shown in FIG. 7, the electric wire 20 connected to the jumper sleeve 12 can be led out from both end portions 1a and 2a of the cover plate portions 1 and 2 in a bent state (fifth example). The electric wire 20 is bent along the protruding piece 4b outside the second position B, and the load applied to the electric wire 20 is also distributed to the protruding piece 4b.

  Note that the present invention can be variously modified without being limited to the above embodiment. For example, the two projecting pieces 4b and 4b at the second position B may be formed in parallel with each other instead of the letter C shape. Further, even if the watertight member 5 is fixed to the cover plate portions 1 and 2 with an adhesive or the like without providing the inner wall-like portion 6 and the protrusion 9 for setting the watertight member 5 on the cover plate portions 1 and 2. Good.

  Further, the watertight member 5 is not a combination of the foam 5a and the putty 7a, but may be made of a material having both functions. Further, when the cover plate portions 1 and 2 are formed of a material that functions as a watertight member, the watertight member 5 may not be provided.

  Further, in the above embodiment, the case where the branch sleeve 11 and the jumper sleeve 12 are set has been described. However, the embodiment can also be implemented in a pull-down connection portion or a straight connection portion of an overhead distribution line. A dedicated connection member is used.

It is one Embodiment of the insulation cover for overhead power distribution lines which concerns on this invention, Comprising: It is a top view which shows the expanded state. It is one Embodiment of the insulation cover for overhead power distribution lines which concerns on this invention, Comprising: It is a perspective view which shows the closed state. BRIEF DESCRIPTION OF THE DRAWINGS It is a 1st example of the assembly structure of the overhead distribution line which set the connection member using the insulation cover for overhead distribution lines which concerns on this invention, Comprising: (a) is a cross-sectional front view, (b) is a front view, (c ) Is a sectional view taken along line XX of (b). It is a 2nd example of the assembly structure of the overhead distribution line which set the connection member using the insulation cover for overhead distribution lines which concerns on this invention, Comprising: (a) is a cross-sectional front view, (b) is a front view. It is a 3rd example of the assembly structure of the overhead distribution line which set the connection member using the insulation cover for overhead distribution lines which concerns on this invention, Comprising: (a) is a cross-sectional front view, (b) is a front view. It is a 4th example of the assembly structure of the overhead distribution line which set the connection member using the insulation cover for overhead distribution lines which concerns on this invention, Comprising: (a) is a cross-sectional front view, (b) is a front view. It is a 5th example of the assembly structure of the overhead distribution line which set the connection member using the insulation cover for overhead distribution lines which concerns on this invention, Comprising: (a) is a cross-sectional front view, (b) is a front view. It is a perspective view which shows the conventional insulation cover for overhead distribution lines.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cover plate part 1a ... End 1b ... End edge 1c ... Outer edge 2 ... Cover plate part 2a ... End 2b ... End edge 2c ... Outer edge 3 ... Side plate Part 4a ...... Projection piece 4b ...... Projection piece 5 ...... Watertight member 5a ...... Foam 5b ... Putty 6 ... ... Inner wall-shaped part 7a ... Putty 7b ... Branch watertight spacer 9 ... Projection Article 11 ... Branch sleeve (branch connector, connecting member)
12 ... Jumper sleeve (straight connector, connecting member)
20 ... Electric wire 30 ... Bind wire A ... ... First position B ... ... Second position

Claims (11)

A pair of quadrangular covers for setting the connection member of either a branch connection body or a straight connection body for connecting electric wires to both ends to the center, and for leading out the electric wires connected to the connection members from both ends plate portion are connected at the inner edge by a strip-shaped side plate portion so that it can be diverted into a state of being deployed in parallel and a closed state in parallel to face each other with a predetermined interval, multiple protrusion cover plate portion In the insulation cover for aerial distribution lines protruding from the inner surface of
The projecting piece abuts the end face of the set branch connector at one point, and contacts the side surface of the set straight connector from one side, and the wire connected to the linear connector The side surface of the electric wire connected to the side surface or the branch connection body is sandwiched from both sides, and is projected at a second position where the end surface of the linear connection body is abutted at two points. The first position and the second position are An insulation cover for an aerial distribution line, provided at both ends of at least one cover plate portion.
  2. The overhead insulation electric wire insulation cover according to claim 1, wherein the projecting piece at the second position protrudes in a C shape whose interval is widened toward an edge of the cover plate portion.   The cover plate portion is provided with an inner wall-shaped portion for setting a watertight member on the outer side of the projecting piece projecting at the second position along each edge. The insulation cover for an aerial distribution line according to claim 1 or 2.   Between the protruding piece projecting at the second position and the inner wall portion, a foam having an adhesive layer on the surface and an indeterminate and sticky putty were partially overlapped in a band shape. The watertight member is set, The insulation cover for overhead distribution lines according to claim 3.   An adhesive putty that surrounds two wires connected in parallel to the branch connection body and fills the gap between the two wires; a watertight spacer for branching that holds the two wires via the putty; The insulation cover for overhead distribution lines according to any one of claims 1 to 3, further comprising a watertight member interposed between the watertight spacer for branching and the cover.   The insulation cover for overhead distribution lines according to any one of claims 1 to 5, wherein a protrusion is provided inwardly on an outer edge of each cover plate portion.   The insulation cover for overhead distribution lines according to any one of claims 1 to 6, wherein an putty having an indeterminate shape is attached to an outer edge of the at least one cover plate portion.   The insulation cover for an overhead distribution line according to any one of claims 1 to 7, wherein a grip portion is provided to protrude from an outer edge of at least one cover plate portion. An assembly of an aerial distribution line in which a branch connection body in which one electric wire is connected to one end and two electric wires are connected to the other end is set on the insulation cover for the aerial distribution line according to any one of claims 5 to 8. Structure,
The watertight spacer for branching includes a pair of cover plate portions and two watertight spacers for branching, which are surrounded by two putty wires in the vicinity of the branch connecting body through a putty having adhesive properties, and are closed in parallel. An assembly structure of an aerial distribution line, characterized in that a watertight member is in close contact with each other and between the pair of cover plate portions and one electric wire. An insulating cover for an aerial distribution line in which a gripping portion projects from the outer edge of at least one cover plate portion according to claim 1 and watertight members are set at both ends of both cover plates. It is a method for attaching an insulation cover for an aerial distribution line in which a branch connection body in which an electric wire is connected and two electric wires are connected in parallel is connected to the other,
In the vicinity of the branch connector, the two wires are surrounded by a watertight spacer for branching through a putty, and the two wires are bound by a bind wire at a portion outside the cover plate portion, and one of the unfolded states is deployed. A gripping part of the cover plate part is gripped by a gripping tool, the one cover plate part is approached to the branch connection body, and the vicinity of the branch connection body of one electric wire and the watertight spacer for branching are respectively connected to the cover plate part. A method for attaching an insulating cover for an overhead distribution line, wherein the cover plate part is closed by being positioned on a watertight member set at each end and changing the direction of the other cover plate part. 11. The overhead distribution line according to claim 10, wherein the watertight spacer for branching is used which is deformable from the unfolded state into a folded state, and in which the one end portion is a holding portion protruding from the other end portion in the folded state. An insulating cover mounting method,
In the unfolded state, hold the holding part of the watertight spacer for branching with the putty on the inner surface with a holding tool. Folding the watertight spacer for the branch, binding the two wires with the binding wire at the outer part of the cover plate part, tightening the watertight spacer for branching folded in half, and holding the branching watertight spacer The method for mounting an insulation cover for an aerial distribution line according to claim 10, comprising twisting the wire.

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