JP6114150B2 - Protective cover for electric wire - Google Patents

Description

  The present invention relates to an electric wire protective cover for preventing contact between an electric wire and a foreign object.

  2. Description of the Related Art Conventionally, an electric wire protective cover for protecting an electric wire has been formed from an insulator, and prevents leakage due to contact between the electric wire and a foreign object such as a tree by being provided on the outer side in the radial direction of the electric wire. For example, the communication line protective cover described in Patent Document 1 includes a cover portion for protecting the communication line, a joint portion provided at one end portion of the cover portion, and another communication line provided at the other end portion of the cover portion. An insertion portion inserted into the joint portion of the protective cover for the cable, and a tightening ring provided so as to be relatively rotatable with respect to the joint portion and restricting the movement of the two protective covers for the communication line in the axial direction.

Japanese Patent No. 3059106

  However, in the communication line protective cover described in Patent Document 1, a joint portion and an insertion portion for connecting to other communication line protection covers are integrally provided at both ends of the cover portion that protects the communication line. . For this reason, the shape of the protective cover for communication lines becomes complicated, and the man-hour when manufacturing the protective cover for communication lines increases. Moreover, when attaching to the already installed electric wire, since a cover part and a joint part whose outer diameter is larger than a cover part are attached to an electric wire simultaneously, work in a high place takes time.

  The objective of this invention is providing the protective cover for electric wires which reduces the man-hour at the time of manufacture, improving the workability | operativity of the attachment to an electric wire.

The present invention is an electric wire protective cover for preventing contact between an electric wire and a foreign object, and is formed of an insulating material and provided in a radially outward direction of the electric wire, and the diameter of the cover portion from the outer peripheral wall of the cover portion. A cover member that is formed so as to protrude outward and has a cover rib portion that forms a space that opens in the circumferential direction of the cover portion, and is formed in a cylindrical shape separately from the cover member, and the end of the cover member is inserted inside A first through hole forming portion is provided on the outer peripheral wall of the cylindrical portion having the first notch where the cover rib portion is positioned and two first through holes opening in the circumferential direction of the cylindrical portion. A connecting member for connecting the two cover members, and a main body portion and a main body portion having a second notch provided so as to be relatively rotatable with respect to the connecting member in a radially outward direction of the connecting member and connecting the inner peripheral wall and the outer peripheral wall From the outer peripheral wall of the main body And a ring-shaped member projecting portion is provided which is formed so as to protrude toward, when the body portion of the ring-shaped member is positioned in the space and two of the first through hole, the protrusion first through-hole forming portion It is characterized by being locked to.

  In the protective cover for electric wires of the present invention, the connecting member that connects the cover member that protects the electric wires is provided separately from the cover member. Thereby, when attaching the protective cover for electric wires of the present invention to the already installed electric wire, the cover member and the connecting member are separately attached to the electric wire, and then the cover is used using the ring-shaped member assembled to the connecting member. The member and the connecting member are connected. Thereby, compared with the protective cover for electric wires by which the cover member and the connection member were integrally molded conventionally, attachment and removal can be easily performed to the electric wire currently erected in the high place. Therefore, the workability of attachment to and removal from the electric wire at the work site can be improved.

  Moreover, in the protective cover for electric wires of the present invention, the cover member, the connecting member, and the ring-shaped member are individually manufactured, and when attached to the electric wire, the connecting member, the ring-shaped member, and the cover member are attached at the work site. Since it assembles, the man-hour at the time of manufacture can be reduced. Therefore, productivity of the protective cover for electric wires can be improved.

  Moreover, since the connection member with which the protective cover for electric wires of the present invention is provided is provided separately from the cover member, the cover members with different outer diameters and cover rib portions of the cover member are connected to each other. be able to. Therefore, by using a non-standard cover member or a cover member already attached to the electric wire, the electric wire can be efficiently protected with less material.

Moreover, since the cover member with which the protective cover for electric wires of this invention is provided separately from a connection member, a shape becomes comparatively simple and it can manufacture a cover member of various length easily. Thereby, it can attach, selecting the length of a cover member according to the length of the electric wire to protect, a working environment, etc., and can protect an electric wire without a clearance gap.
Moreover, the cover member can be prevented from falling off from the electric wire by relatively shortening the length of the cover member and increasing the number of connecting portions by the connecting member.

It is a schematic diagram of the protective cover for electric wires by one Embodiment of this invention. It is a schematic diagram of the cover member of the protective cover for electric wires by one Embodiment of this invention. It is a schematic diagram of the connection member of the protective cover for electric wires by one Embodiment of this invention. It is a schematic diagram of the ring-shaped member of the protective cover for electric wires by one Embodiment of this invention. It is a schematic diagram explaining the attachment method to the electric wire of the protective cover for electric wires by one Embodiment of this invention. It is a schematic diagram of the protective cover for electric wires by other embodiment of this invention. It is the schematic diagram and sectional drawing of the protective cover for electric wires of a comparative example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(One embodiment)
An electric wire protective cover according to an embodiment of the present invention is shown in FIGS.
The electric wire protective cover 1 includes a cover member 10, a connecting member 30, and a ring-shaped member 40. The protective cover 1 for electric wires prevents the electric wire 5 inserted into the cover member 10, for example, a high-voltage distribution line of about 6600 V from coming into contact with foreign matter.

  The cover member 10 is a substantially cylindrical member formed from an insulating material such as polyethylene. As shown in FIG. 2, the cover member 10 includes a cover part 11 and a cover rib part 12. The cover part 11 and the cover rib part 12 are integrally formed. In addition, in FIG. 1, the schematic diagram of the state in which the two cover members 10 and 20 are connected via the connection member 30 is shown. FIG. 2 shows a schematic diagram of the cover member 10 alone. Moreover, in FIG. 2A, the electric wire 5 inserted into the cover member 10 is indicated by a two-dot chain line.

  The cover part 11 is formed in a cylindrical shape. As shown in FIG. 2A, the cover portion 11 is provided so as to cover the radially outer side of the electric wire 5 in the radially outer direction of the electric wire 5. In the electric wire protective cover 1 according to the embodiment, the length of the cover portion 11 in the axial direction is set to a length of 2 to 5 m in consideration of, for example, workability at a work site and a connection interval with the connection member 30. . However, in order to protect the electric wire 5 without a gap, a plurality of cover members having different lengths in the axial direction of the cover portion may be prepared.

  The cover rib portion 12 is provided on the outer peripheral wall 113 of the cover portion 11. The cover rib portion 12 is formed in the same length as the cover portion 11 in the direction of the central axis φ <b> 1 of the cover member 10. The cover rib portion 12 is provided so as to extend in the radially outward direction from the outer peripheral wall 113 of the cover portion 11. The one end 121 and the other end 122 of the cover rib part 12 are formed with substantially rectangular through holes 123 and 124 that open in the circumferential direction of the cover part 11. The through holes 123 and 124 correspond to “space” and “second through hole” recited in the claims.

  The cover rib portion 12 is formed by combining two plate-like portions. A gap 13 that communicates the inside 111 and the outside of the cover portion 11 is formed between the two plate-like portions so as to extend in the direction of the central axis φ1 between the two plate-like portions. The gap 13 becomes a large opening that allows the electric wire 5 to be inserted into the interior 111 of the cover portion 11 when a force in a direction in which the two plate-like portions forming the cover rib portion 12 are separated from each other is applied.

  The connecting member 30 includes a cylindrical portion 31 and two locking portions 32 and 33. The cylinder part 31 and the latching | locking parts 32 and 33 are integrally formed from an insulating material, for example, polyethylene. As shown in FIG. 1, the connecting member 30 is provided separately from the cover members 10 and 20, and connects one end 101 of the cover member 10 and the other end 202 of the cover member 20. 3A shows a state in which the cover member 10 is inserted into the connecting member 30. FIG.

  The cylinder part 31 is a C-shaped cylinder part which has a notch in a cross section. The cylindrical portion 31 is formed so that the inner diameter is large enough to allow the cover portion 11 of the cover member 10 to be inserted. The edge 315 of the opening 311 formed at one end of the cylindrical portion 31 and the edge 316 of the opening 312 formed at the other end are formed in an R shape as shown in FIG. Is formed. As shown in FIG. 1, when the other end portion 202 of the cover member 20 is inserted into the opening 311 of the cylindrical portion 31, the other end portion 202 of the cover member 20 smoothly moves along the R shape of the edge portion 315. It is inserted into the inside 314 of the cylinder part 31. In addition, when one end 101 of the cover member 10 is inserted into the opening 312 of the cylindrical portion 31, the one end 101 of the cover member 10 smoothly moves along the R shape of the edge portion 316 to the inside of the cylindrical portion 31. 314 is inserted.

  The locking portions 32 and 33 are provided on the outer peripheral walls at both ends of the cylindrical portion 31. The locking portion 32 provided on the opening 311 side includes a small-diameter rib 320, a large-diameter rib 321, and connection bars 322 and 323. Further, the locking portion 33 provided on the opening 312 side includes a small-diameter rib 330, a large-diameter rib 331, and connection bars 332 and 333. The locking portions 32 and 33 correspond to “first through-hole forming portions” described in the claims.

  The small-diameter ribs 320 and 330 are provided closer to the center in the direction of the central axis φ <b> 2 of the connecting member 30 than the two ends of the cylindrical portion 31. The small-diameter ribs 320 and 330 are formed substantially perpendicular to the central axis φ2 along the outer peripheral wall 313 of the cylindrical portion 31 so that the cross section perpendicular to the central axis φ2 of the connecting member 30 is substantially C-shaped. The small diameter ribs 320 and 330 are formed so that the outer diameter is larger than the outer diameter of the cylindrical portion 31. The small-diameter ribs 320 and 330 correspond to “annular ribs” recited in the claims.

  The large-diameter ribs 321 and 331 are provided at two end portions of the cylindrical portion 31, respectively. The large-diameter ribs 321 and 331 have an outer diameter that is the outer diameter of the cover member 10, the outer diameter of the cylindrical portion 31 of the connecting member 30, the outer diameter of the small-diameter ribs 320 and 330, and the main body portion 43 of the ring-shaped member 40 described later. It is formed to be larger than the outer diameter. The large-diameter ribs 321 and 331 are formed substantially perpendicular to the central axis φ2 along the outer peripheral wall 313 of the cylindrical portion 31 so that the cross section perpendicular to the central axis φ2 is substantially C-shaped. The large-diameter ribs 321 and 331 correspond to “annular ribs” recited in the claims.

  As shown in FIG. 3A, the connection bars 332 and 333 of the locking portion 33 are respectively provided at positions sandwiching the central axis φ2. A connection bar 332 provided on the left side (right side of the central axis φ2 on the paper surface of FIG. 3A) from the point on the central axis φ2 on the paper surface of FIG. The large-diameter rib 331 and the small-diameter rib 330 are connected. The connection bar 332 includes an outer peripheral wall 313 of the cylindrical portion 31, a side wall 335 of the small diameter rib 330 on the large diameter rib 331 side, a side wall 334 of the large diameter rib 331 on the small diameter rib 330 side, and a wall surface on the radially inner side of the connection bar 332. A through hole 338 having a substantially rectangular cross section is formed by 336. Further, a connection bar provided on the right side (on the left side of the central axis φ2 on the paper surface of FIG. 3A) from the point on the central axis φ2 on the paper surface of FIG. 3A toward the rib notch 34. A through hole 339 is formed by the outer peripheral wall 313 of the cylindrical portion 31, the side wall 335 of the small-diameter rib 330, the side wall 334 of the large-diameter rib 331, and the wall surface 337 on the radially inner side of the connection bar 333. The through holes 338 and 339 open in the circumferential direction of the cylindrical portion 31. The through holes 338 and 339 correspond to “first through holes” recited in the claims.

  The connection bars 322 and 323 of the locking part 32 are respectively provided at positions sandwiching the central axis φ4 of the cover member 20 similarly to the locking part 33 (see FIG. 1B). The connection bars 322 and 323 connect the small diameter rib 320 and the large diameter rib 321. The connection bar 322 includes an outer peripheral wall 313 of the cylindrical portion 31, a side wall 325 of the small diameter rib 320 on the large diameter rib 321 side, a side wall 324 of the large diameter rib 321 on the small diameter rib 320 side, and a wall surface on the radially inner side of the connection bar 322. A through hole 328 having a substantially rectangular cross section is formed by 326. Further, the connection bar 323 has a substantially rectangular cross section due to the outer peripheral wall 313 of the cylindrical portion 31, the side wall 325 of the small diameter rib 320, the side wall 324 of the large diameter rib 321, and the wall surface 327 on the radially inner side of the connection bar 323. 329 is formed. The through holes 328 and 329 open in the circumferential direction of the cylindrical portion 31. The through holes 328 and 329 correspond to “first through holes” recited in the claims.

The rib cutout 34 is an opening formed to extend in the direction of the central axis φ <b> 2 of the connecting member 30. The rib cutout 34 as the “first cutout” communicates the inside 314 of the cylindrical portion 31 with the outside. The rib cutout 34 is formed so that the size in the circumferential direction is larger than the diameter of the electric wire 5. That is, the electric wire 5 can be inserted into the interior 314 of the cylindrical portion 31 through the rib cutout 34.
When one end 101 of the cover member 10 and the other end 202 of the cover member 20 are inserted into the connecting member 30, the cover rib portion 12 of the cover member 10 and the cover rib portion 22 of the cover member 20 are cut for ribs. As shown in FIGS. 1 and 3, the cover rib portions 12 and 22 are provided so as to protrude from the inside of the cylindrical portion 31 to the outside via the rib cutouts 34 as shown in FIGS.

  As shown in FIG. 4, the ring-shaped member 40 includes a main body portion 43, convex portions 41 and 42, and a knob portion 44. In the ring-shaped member 40, the main body portion 43, the convex portions 41 and 42, and the knob portion 44 are integrally formed from an insulating material, for example, polyethylene, and are relative to the connecting member 30 in the radially outward direction of the connecting member 30. It is provided so as to be rotatable. As shown in FIG. 1, the ring-shaped member 40 is inserted into the through holes 123, 338 and 339, or the through holes 224 and the through holes 328 and 329 formed in the cover rib portion 22 of the cover member 20, thereby connecting members The movement of the cover members 10 and 20 in the axial direction with respect to 30 is restricted. FIG. 4A shows a state when the ring-shaped member 40 is attached to the connecting member 30. The through hole 224 corresponds to a “space” and a “second through hole” recited in the claims.

  The main body 43 is a part where a cross section perpendicular to the central axis φ3 of the ring-shaped member 40 is formed in a substantially C shape. The main body 43 is provided along the outer peripheral wall 313 of the cylindrical portion 31 between the small diameter rib 320 and the large diameter rib 321 of the connecting member 30 or between the small diameter rib 320 and the large diameter rib 321.

  The knob portion 44 is formed so as to extend in the radially outward direction of the main body portion 43 from one end portion 431 having a C-shape that is a cross-sectional shape of the main body portion 43. The knob portion 44 is used for operating the ring-shaped member 40. The knob portion 44 corresponds to a “projection” described in the claims.

  The convex portion 41 is provided on the outer peripheral wall 433 of the main body portion 43 and in the vicinity of the knob portion 44. The convex portion 41 has a substantially triangular cross section perpendicular to the central axis φ3. The height of the convex portion 41 from the inner peripheral wall 434 of the main body portion 43 to the radially outer side of the convex portion 41 is approximately the same as the height of the through holes 328 and 338 of the connecting member 30 in the radial direction. The portion of the ring-shaped member 40 where the convex portion 41 is formed can pass through the through holes 328 and 338 while being in contact with the inner wall 326 of the connection bar 322 or the inner wall 336 of the connection bar 332. The convex portion 41 corresponds to a “protruding portion” described in the claims.

  The convex part 42 is provided on the outer peripheral wall 433 of the main body part 43 and at the other end part 432 having a C-shape which is a cross-sectional shape of the main body part 43. The convex portion 42 has a substantially trapezoidal cross-sectional shape perpendicular to the central axis φ3. The length of the convex portion 42 from the inner peripheral wall 434 of the main body portion 43 to the radially outer side of the convex portion 42 is longer than the length in the radial direction of the through holes 123 and 124 of the cover member 10 or the through holes 224 of the cover member 20. A portion that is formed to be small and on which the convex portion 42 of the ring-shaped member 40 is formed can pass through the through holes 123, 124, and 224. The convex portion 42 prevents the ring-shaped member 40 from dropping from the connecting member 30. The convex portion 42 corresponds to a “protruding portion” described in the claims.

  A ring notch 45 is formed between one end 431 and the other end 432 of the main body 43. The ring cutout 45 as the “second cutout” is formed to connect the inner peripheral wall 434 and the outer peripheral wall 433 of the main body 43 and extend in the direction of the central axis φ3. The ring notch 45 is formed so that the size in the circumferential direction is larger than the diameter of the electric wire 5.

  Next, the attachment method to the electric wire 5 of the protective cover 1 for electric wires is demonstrated.

  First, the cover member 10 and the connecting member 30 are attached to the electric wire 5. In the cover member 10, a force is applied to the cover rib portion 12 so as to widen the gap 13 formed in the cover rib portion 12 of the cover member 10, and the electric wire 5 installed from the widened gap is connected to the inside of the cover member 10. It attaches to the electric wire 5 by inserting in. Further, in the connecting member 30, the connecting member 30 is attached to the electric wire 5 by inserting the electric wire 5 into the inside 314 of the connecting member 30 through the rib notch 34 as described above.

  Next, the cover member 10 and the connecting member 30 are assembled. The connecting member 30 attached to the electric wire 5 is moved in the direction of the cover member 10, and one end 101 of the cover member 10 is inserted into the inside 314 of the connecting member 30. When one end 101 of the cover member 10 is inserted into the interior 314 of the connecting member 30, one end 121 of the cover rib portion 12 of the cover member 10 is positioned in the rib notch 34 of the connecting member 30.

Next, the through hole 123 of the cover member 10 and the through holes 338 and 339 of the connecting member 30 are aligned on a plane perpendicular to the central axis φ <b> 1 of the cover member 10. The positional relationship of each member at this time is the positional relationship shown in FIG.
Next, the ring-shaped member 40 attached to the connecting member 30 is rotated in the circumferential direction of the cover member 10. Specifically, as shown in FIG. 5A to FIG. 5B, the knob portion 44 is operated to rotate the ring-shaped member 40 clockwise in the direction of arrow S on the paper surface of FIG.

  When the ring-shaped member 40 rotates clockwise on the paper surface of FIG. 5, the other end 432 of the ring-shaped member 40 is inserted into the through hole 123 of the cover member 10. When the ring-shaped member 40 is further rotated clockwise, the convex portion 41 passes through the through hole 338, and then the positional relationship shown in FIG. Thereby, since the connection bar 323 is located between the knob part 44 and the convex part 41, the relative rotation of the ring-shaped member 40 with respect to the connecting member 30 is restricted.

  Next, the other end 202 of the cover member 20 that accommodates the electric wire 5 is inserted into the opening 311 of the connecting member 30. At this time, in order to easily connect the cover member 20 and the connecting member 30, the rib notch 34 of the connecting member 30 to which the cover member 10 is connected may be rotated so as to face the top side. The other end 202 of the cover member 20 is inserted to a position where it can contact the one end 101 of the cover member 10. This prevents the electric wire 5 from being exposed to the outside as much as possible. The other end 222 of the cover rib portion 22 provided on the outer peripheral wall 213 of the cover portion 21 of the cover member 20 is inserted into the rib cutout 34 of the connecting member 30.

  Next, the through holes 224 formed in the cover rib portion 22 of the cover member 20 and the through holes 328 and 329 of the connecting member 30 are aligned on a plane perpendicular to the central axis φ4 of the cover member 20 to cover the ring-shaped member 40. The member 20 rotates around the central axis φ4. The other end of the ring-shaped member 40 is inserted into the through hole 224 of the cover member 20 by the rotation of the ring-shaped member 40, and the cover member 20 is connected to the connecting member 30.

  Thereafter, when the electric wire 5 is further covered, the other end 102 of the cover member 10 opposite to the side connected to the connecting member 30 or the side of the cover member 20 opposite to the side connected to the connecting member 30 is used. Another connecting member is assembled to one end of the connecting member, and the connecting member and the cover member are connected by a ring-shaped member.

Next, the effect of the wire protective cover 1 according to the embodiment will be described while comparing the related art disclosed in Patent Document 1 as a comparative example.
First, a protective cover for electric wires as a comparative example will be described with reference to FIG. The electric wire protective cover 9 shown in FIG. 7 is attached to the electric wire and used for the same application as the electric wire protective cover 1 according to the embodiment.
The electric wire protective cover 9 includes a cover portion 91, a joint portion 92, an insertion portion 93, a tightening ring 94, and the like. In the protective cover 9 for electric wires, the cover part 91, the joint part 92, and the insertion part 93 are integrally formed from resin.

  The cover part 91 is formed in a substantially cylindrical shape and accommodates an electric wire therein. The cover part 91 has a cover rib part 911 formed so as to extend radially outward from the outer peripheral wall.

  The joint portion 92 is provided at one end portion of the cover portion 91. The joint portion 92 is formed so that the outer diameter is larger than the outer diameter of the insertion portion 93 described later. The joint portion 92 has a joint rib portion 921 formed so as to extend radially outward from the outer peripheral wall and connected to the cover rib portion 911. The joint rib portion 921 has a through hole 922 that opens in the circumferential direction. A concave groove 923 communicating with the through hole 922 is formed in the circumferential direction on the outer peripheral wall of the joint portion 92. A through-hole forming portion 925 that forms a through-hole 924 that opens in the circumferential direction is provided on the opposite side of the joint rib portion 921 across the central axis φ5 of the electric wire protective cover 9 and in the radially outward direction of the groove 923. ing. In the joint portion 92, a large-diameter portion 926 having an outer diameter larger than the outer diameter of the outer peripheral wall of the joint portion 92 is provided on the outer peripheral wall on the cover portion 91 side from the groove 923.

  The insertion portion 93 is provided at the other end of the cover portion 91. The insertion portion 93 is formed so that the outer diameter is larger than the outer diameter of the cover portion 91 and smaller than the inner diameter of the joint portion 92. The insertion portion 93 has an insertion rib portion 931 that is formed to extend radially outward from the outer peripheral wall and is connected to the cover rib portion 911. The insertion rib portion 931 has a through hole 932 that opens in the circumferential direction. An annular protrusion 933 that protrudes radially outward is formed at the end of the plug-in part 93 opposite to the side connected to the cover part 91.

  The cover rib portion 911, the joint rib portion 921, and the insertion rib portion 931 are formed by combining two plate-like portions 97 and 98 together. A gap 95 is formed in the longitudinal direction between the plate-like portion 97 and the plate-like portion 98.

  As shown in FIG. 7B, the fastening ring 94 has a substantially C-shaped cross section perpendicular to the central axis. The tightening ring 94 is provided in the groove 923 of the joint portion 92 while being inserted into the through hole 924 of the joint portion 92, and is provided so as to be rotatable relative to the joint portion 92. The tightening ring 94 includes a knob portion 941 that protrudes radially outward at one end, a convex portion 942 that is provided near the knob portion 941 and has a shorter length in the radially outward direction than the knob portion 941, and a tightening portion A convex portion 943 that is provided substantially at the center of the ring 94 and cannot pass through the through hole 924 of the joint portion 92 is provided.

Here, the attachment method to the electric wire in the protective cover 9 for electric wires as a comparative example is demonstrated.
When the electric wire protection cover 9 is attached to the electric wire, as shown in FIG. 7B, the two plate-like portions 97 and 98 constituting the cover rib portion 911, the joint rib portion 921 and the insertion rib portion 931 are connected to the joint portion 92. A force F is applied in a direction away from each other together with the tightening ring 94 assembled to, and the gap 95 is pushed open so as to be larger than the diameter of the electric wire. The electric wire is inserted into the electric wire protective cover 9 from the gap 95 which has become larger, and the electric wire protective cover 9 is attached to the electric wire.

  Next, an insertion portion of another wire protection cover different from the wire protection cover 9 attached to the wire by the same method is inserted into the joint portion 92 of the wire protection cover 9. At this time, another electric wire reaches a position where an annular protrusion formed on the insertion portion of another electric wire protective cover is accommodated in a groove (not shown) formed on the inner side of the large diameter portion 914 of the joint portion 92. Insert the protective cover. Thereby, the through-hole of the insertion part of another protective cover for electric wires and the through-hole 922 of the joint part 92 overlap so that it may communicate.

  Next, the fastening ring 94 provided in the joint portion 92 in the state of FIG. 7B is rotated clockwise on the paper surface of FIG. As a result, the tightening ring 94 is inserted into the through hole of the insertion portion of the other protective cover for electric wires and the through hole 922 of the joint portion 92 that overlap so as to communicate with each other. When the tightening ring 94 is further rotated clockwise, the convex portion 942 and the knob portion 941 of the tightening ring 94 are locked to the through-hole forming portion 925, and the relative rotation of the tightening ring 94 with respect to the joint portion 92 is restricted. Is done. Thereby, the movement of the axial direction between another electric wire protection cover and the electric wire protection cover 9 is controlled.

In the protective cover 9 for the electric wire of the comparative example, since the cover portion 91, the joint portion 92, and the insertion portion 93 are integrally formed, the protective cover 9 for the electric wire of the comparative example is applied to the already installed high place electric wire. When attaching, it takes time and labor such as transportation to a high place and insertion of electric wires into the protective cover 9 for electric wires. In particular, when the electric wire is inserted into the inside through the gap 95 of the electric wire protective cover 9, the two plate-like portions 97 and 98 constituting the cover rib portion 911 and the like must be applied with a force in a direction away from the fastening ring 94. Rather, the force at this time is a relatively large force.
On the other hand, in the electric wire protective cover 1 according to the embodiment, when the electric wire protective cover 1 is attached to the electric wire 5, as described above, the cover members 10, 20 and the connecting member 30 are separately attached to the electric wire 5, and then the cover member. 10 and 20 are connected by a connecting member 30 and a ring-shaped member 40. When the cover members 10 and 20 are attached, it is necessary to push the gap 13 wide. However, the cover members 10 and 20 are formed in a cylindrical shape, and the connecting member 30 and the ring-shaped member 40 having a complicated configuration are not assembled. Therefore, it can be attached to the electric wire 5 with a relatively small force. Further, since the connecting member 30 and the ring-shaped member 40 have the rib notch 34 and the ring notch 45 larger than the diameter of the electric wire 5, the connecting member 30 to which the ring-shaped member 40 is assembled is used as the electric wire 5. There is no need to squeeze out the connecting member 30 when it is attached to. Therefore, the electric wire protective cover 1 can easily perform the work of attaching to and detaching from the electric wire 5 and can improve the workability at the work site.

  Moreover, in the protective cover 1 for electric wires, the several cover members 10 and 20, the connection member 30 which connects the cover members 10 and 20, and the ring-shaped member 40 which connects the cover members 10 and 20 and the connection member 30 are included. I have. Among these, the connecting member 30 and the ring-shaped member 40 are provided separately from the cover members 10 and 20 and can be prepared in large quantities as members having the same shape regardless of the length of the electric wire 5 to be protected. In addition, when preparing the cover members 10 and 20 formed in a cylindrical shape as members having a certain length, in addition to the connecting member 30 and the ring-shaped member 40 having the same shape, regardless of the length of the electric wire to be protected, The protective cover 1 for electric wires can be attached to the electric wires 5 by preparing the cover members 10 and 20 having the same shape. Thereby, the man-hour in the manufacturing stage which manufactures each component of the cover members 10 and 20, the connection member 30, and the ring-shaped member 40 separately can be reduced. Therefore, productivity of the protective cover 1 for electric wires can be improved.

  Further, since the connecting member 30 is provided separately from the cover members 10 and 20, it is possible to connect cover members having different cover member outer diameters and different cover rib sizes. Thus, for example, by forming a through-hole through which a ring-shaped member can be inserted into a non-standard cover member manufactured by another manufacturer or a cover member already attached to the electric wire instead of the predetermined cover member, These new cover members can be connected to these cover members. Therefore, an electric wire can be efficiently protected with few materials.

  Moreover, since the cover members 10 and 20 and the connecting member 30 and the ring-shaped member 40 are provided separately, the length of the electric wire 5 that protects the length of the cover members 10 and 20 and a length suitable for handling at a high place. It can be easily changed. Thereby, the cover member from which length differs according to the length of the electric wire 5 which needs protection can be selected, and the electric wire 5 can be protected without a gap. Moreover, the space | interval of connection members can be shortened by making the length of the cover members 10 and 20 comparatively short, and the drop-off of the cover members 10 and 20 from an electric wire can be prevented.

  Further, the large-diameter rib 321 is formed so that the outer diameter is the largest among the parts constituting the protective cover 1 for electric wires. As a result, when the electric wire protective cover 1 is lifted from the ground to a high place, it becomes easy to hook the dedicated hanger of the high-altitude work bucket truck on the large-diameter rib 321, and workability at high places can be improved.

Moreover, in the electric wire protection cover 1, since the shape of the member which comprises the electric wire protection cover 1 is simple, a storage space can be made small and it can convey in large quantities at once.
In addition, since the assembly of the cover members 10 and 20 and the connecting member 30 is performed at the work site, it is not necessary to assemble at the manufacturing stage, and the number of manufacturing steps is reduced, so the price at the time of sale can be set relatively low. .

(Other embodiments)
(A) In the above-described embodiment, the ring-shaped member has a plurality of convex portions, and the convex portion provided at the other end of the ring-shaped member prevents the ring-shaped member from falling off the connecting member. However, the number of convex parts which a ring-shaped member has is not limited to this. The ring-shaped member may have one convex portion.

  (A) In the above-described embodiment, the cover rib portion is formed with a substantially rectangular through hole as a “space” that opens in the circumferential direction of the cover portion. However, the “space” formed in the cover rib portion is not limited to this. It is only necessary to form a space through which the end of the ring-shaped member can be inserted. For example, as shown in FIG. 6, notches 125, 126, and 226 may be formed in the cover rib portions 12 and 22 as “spaces”. In this case, when forming a “space” for inserting the ring-shaped member into the cover rib portion of the cover member at the installation work site, it can be formed by cutting a part of the cover rib portion with a cutting tool or the like. Can be easily processed as compared with the case of forming.

  (C) In the above-described embodiment, the ring-shaped member has the knob portion for operation. However, the knob portion may not be provided.

  (D) In the above-described embodiment, the locking portion is composed of a small diameter rib, a large diameter rib, and a connection bar that connects the small diameter rib and the large diameter rib. However, the configuration of the locking portion is not limited to this. What is necessary is just to latch with the convex part or knob part of a ring-shaped member, and to control the relative rotation of the ring-shaped member with respect to a connection member.

  (E) In the above-described embodiment, the outer diameter of the large-diameter rib is greater than the outer diameter of the cover member, the outer diameter of the cylindrical portion of the connecting member, the outer diameter of the small-diameter rib, and the outer diameter of the main body portion of the ring-shaped member. It was supposed to be formed to be large. However, the size of the outer diameter of the large-diameter rib is not limited to this.

  (F) In the above-described embodiment, the connecting member is made of polyethylene. However, the material forming the connecting member is not limited to this. You may form from materials other than polyethylene. For example, by forming the connecting member from a flexible material, it is possible to cope with a certain degree of change in the outer diameter of the cover portion of the cover member. That is, the connecting member can connect cover members having different outer diameters of the cover portions.

  (G) In the above-described embodiment, the rib cutout and the ring cutout have a circumferential size larger than the diameter of the electric wire. However, the circumferential size of the rib notch and the ring notch is not limited to this. The connecting member and the ring-shaped member may be formed of a flexible material, and the electric wire may be accommodated inside by appropriately opening the rib notch and the ring notch. In the electric wire protective cover of the present invention, the connecting member only needs to open the rib cutout separately from the cover member, so that the force required to push open can be reduced compared to the electric wire protective cover of the comparative example. .

  As mentioned above, this invention is not limited to such embodiment, It can implement with a various form in the range which does not deviate from the summary.

1 ・ ・ ・ Protective cover for electric wire,
5 ... Electric wire,
10, 20 ... cover member,
11, 21 ... Cover part,
12, 22 ... Cover rib part,
123, 124, 224 ... through holes (space, second through holes),
30 ... connecting member,
31 ・ ・ ・ Cylinder part,
32, 33 ... locking portion (first through hole forming portion),
328, 329, 338, 339 ... through hole (first through hole),
34 ・ ・ ・ Notch for rib (first notch),
40: Ring-shaped member,
41, 42 ... convex portions (protruding portions),
43 ... main body,
44 ... Knob portion (protruding portion),
45 ... Ring cutout (second cutout).

Claims (6)

A wire protective cover (1) for preventing contact between the wire (5) and a foreign object,
A cylindrical cover portion (11, 21) formed from an insulating material and provided in the radially outward direction of the electric wire, and projects from the outer peripheral wall (113, 213) of the cover portion in the radially outward direction of the cover portion. A cover member (10, 20) provided with a cover rib portion (12, 22) that forms a space (123, 124, 125, 126, 224, 226) formed in the circumferential direction of the cover portion;
A cylinder having a first notch (34) which is formed separately from the cover member and has a first notch (34) in which the cover rib portion is positioned when the end portions (101, 102, 202) of the cover member are inserted into the cover member. And a first through hole forming two first through holes (328, 329, 338, 339) provided in the outer peripheral wall (313) of the portion (31) and the tubular portion and opening in the circumferential direction of the tubular portion. A connecting member (30) provided with forming portions (32, 33) and connecting the two cover members;
A main body portion (43) having a second notch (45) provided to be rotatable relative to the connecting member in a radially outward direction of the connecting member and connecting the inner peripheral wall (434) and the outer peripheral wall (433). And a ring-shaped member (40) provided with projecting portions (41, 42, 44) formed so as to project from the outer peripheral wall of the main body portion in the radially outward direction of the main body portion;
With
The electric wire protective cover, wherein when the main body portion of the ring-shaped member is positioned in the space and the two first through holes, the projecting portion is locked to the first through hole forming portion.
The first through hole forming portion includes two annular ribs (320, 321, 330, 331) formed in a direction non-parallel to the central axis along the outer peripheral wall of the cylindrical portion, and the two annular ribs Connecting bars (322, 323, 332, 333) for connecting the outer peripheral wall of the main body portion in the radially outward direction,
The ring-shaped member is provided between the two annular ribs so as to be rotatable relative to the connecting member,
When the main body portion of the ring-shaped member is located in the first through hole and the space formed by the two annular ribs and the connection bar, the protruding portion is locked to the connection bar. The protective cover for electric wires according to claim 1, wherein movement of the cover member in the axial direction with respect to the connecting member is restricted while restricting relative rotation of the ring-shaped member with respect to the connecting member.   The outer diameter of the first through hole forming portion is larger than the outer diameter of the cover portion of the cover member, the outer diameter of the cylindrical portion of the connecting member, and the outer diameter of the main body portion of the ring-shaped member. The protective cover for electric wires according to claim 1 or 2. The ring-shaped member has a plurality of the protruding portions,
4. The electric wire according to claim 1, wherein at least one of the plurality of protrusions (42) prevents the ring-shaped member from falling off from the connecting member. 5. Protective cover.   The said space is a 2nd through-hole (125, 126, 226) formed in the said cover rib part, The protective cover for electric wires as described in any one of Claim 1 to 4 characterized by the above-mentioned.   The wire protective cover according to any one of claims 1 to 5, wherein the first cutout and the second cutout have a circumferential size larger than a diameter of the electric wire.

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