JP2018196167A - Insulation cover and attaching method of the same - Google Patents

Abstract

To improve workability when an insulation cover is attached to a distribution line.SOLUTION: A first cover piece 20 comprises: a first divided housing part 21 constituting a part of a housing part; first divided guide parts 22 constituting a part of respective guide parts; and a part 24 to be held, which is extended from the first divided housing part 21 and held by a tip tool insulation pincers have. A second cover piece 30 comprises: a second divided housing part 31 constituting other parts of the housing part; and second divided guide parts 32 constituting other parts of the respective guide parts. A piece 34 to be held, which is held by a tongue that a common operation rod has with a distribution line 2 is arranged in at least one of the divided guide parts 22 and 32 of at least one of the cover pieces 20 and 30.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an insulating cover that accommodates a connection member that electrically connects a distribution line and a pull-down line, and a method for attaching the insulating cover.

Some insulating covers that are attached to the distribution line accommodate a connection member that electrically connects the distribution line and the pull-down line. In the insulating cover disclosed in Patent Document 1, a band member that can be elastically deformed is disposed inside a pair of cover pieces that can be opened and closed, thereby improving workability when attaching to a distribution line. In this insulating cover, one end of the band member is fixed to one cover piece, and the other end of the band member is fixed to the other cover piece. One cover piece and the other cover piece are kept open by the restoring force of the band member.
When attaching the insulating cover of Patent Document 1 to a distribution line, a gripped portion provided on one cover piece is gripped with a tip tool of an insulating Yatco (a kind of gripping tool attached to the tip of an operating rod), and a pair of covers An insulating cover is arranged so that the distribution line is located inside the piece. After the insulating cover is disposed, the insulating member is moved to press the band member against the distribution line. The band member is bent by being pressed against the distribution line. When the band member is curved, the other cover piece is disposed in the vicinity of the one cover piece. Then, the insulating cover is attached to the distribution line by fastening one cover piece and the other cover piece.
In the insulating cover of Patent Document 1, since the pair of cover pieces is maintained in an open state by the restoring force of the band member, it is easy to position the distribution line inside the pair of cover pieces. Workability at the time of attachment can be improved.

JP-A-2006-144328

The insulating cover described in Patent Document 1 is disposed at a desired position by gripping the gripped portion with a gripping tool. However, since the gripped portion is only gripped by the gripping tool in the insulating cover, when this insulating cover is attached to the distribution line, it is necessary to maintain the gripped portion gripped by the gripping tool throughout the work. is there. The insulating cover described in Patent Document 1 has room for improvement in this respect.
This invention is made | formed in view of such a situation, The objective is to improve the workability | operativity at the time of attaching an insulating cover to a distribution line.

In order to achieve the above object, an invention according to claim 1 includes a first cover piece and a second cover piece connected to the first cover piece through a hinge portion so as to be opened and closed. A hollow housing portion that houses a connecting member that electrically connects an electric wire and a pull-down line, and a guide portion that extends from both axial ends of the housing portion to guide the distribution wire, Is an insulating cover that is formed when the first cover piece is in a closed state, and the first cover piece includes a first divided housing portion that forms a part of the housing portion and a first divided portion that forms a part of each of the guide portions. A guide portion; and a gripped portion that extends from the first divided housing portion and is gripped by a gripping tool included in the operation rod, and the second cover piece constitutes another portion of the housing portion. A two-divided accommodating portion; and a second divided guiding portion constituting the other portion of each guiding portion. Wherein the one of the divided guide portion of at least one cover piece, characterized in that the clamped portion sandwiched together with the distribution line by pincer provided in the operating rod is provided.
According to a second aspect of the present invention, in the insulating cover according to the first aspect, the first cover piece includes a first fastening portion, and the second cover piece has the two cover pieces in the closed state. A second fastening part that sometimes fastens to the first fastening part is provided, and the sandwiched part is provided in at least one of the second divided guide parts.

  The invention according to claim 3 is an attachment method for attaching the insulating cover according to claim 1 or 2 to the distribution line, wherein the gripped object is in a state where the first cover piece and the second cover piece are open. A step of positioning the distribution line between the first cover piece and the second cover piece via an operation bar provided with the gripping tool, and an operation bar provided with the holding tool. And sandwiching the sandwiched portion with the distribution line by the sandwiching tool, and closing the first cover piece and the second cover piece with the operation rod in a state where the sandwiched portion is sandwiched. And.

  ADVANTAGE OF THE INVENTION According to this invention, workability | operativity at the time of attaching an insulating cover to a distribution line can be improved.

It is explanatory drawing of the distribution line with which the insulating cover was attached, a pull-down line, and a peripheral part. It is explanatory drawing of the insulation cover of the state which accommodated the pulling-down connector. (A) And (b) is the front view and sectional drawing of a pull-down connector to which the distribution line and the pull-down line were attached. It is explanatory drawing of the insulating cover of the open state which the 1st cover piece and the 2nd cover piece opened. It is a front view of the insulating cover of a closed state. It is a bottom view of the insulating cover in a closed state. It is a left view of the insulating cover of a closed state. It is a figure explaining a mode that the insulated cover of the open state was moved so that a distribution line etc. may be located between a 1st cover piece and a 2nd cover piece. It is a figure explaining a mode that the 1st cover piece and the 2nd cover piece were brought close by the cover presser. (A) And (b) is the perspective view and partial enlarged view explaining a mode that the to-be-clamped piece was clamped with the distribution line by the tongue.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
FIG. 1 is an explanatory diagram of a distribution line 2, a pull-down line 3, and a peripheral portion to which an insulating cover 10 according to an embodiment of the present invention is attached. FIG. 2 is an explanatory diagram of the insulating cover 10 in a state where the pull-down connector 4 is accommodated. 3A and 3B are a front view and a cross-sectional view of the pull-down connector 4 to which the distribution line 2 and the pull-down line 3 are attached.
As shown in FIG. 1, the insulating cover 10 is attached to a connection point between a distribution line 2 (for example, a 6.6 kV distribution line) installed on the utility pole 1 and a pull-down line 3 branched from the distribution line 2. As shown in FIG. 2, a pull-down connector 4 is attached to a connection portion between the distribution line 2 and the pull-down line 3. The pull-down connector 4 is a kind of connection member that electrically connects the distribution line 2 and the pull-down line 3 and is made of a metal material having conductivity (for example, aluminum). The insulating cover 10 is attached to the distribution line 2 with the pull-down connector 4 accommodated therein.
By electrically and mechanically fixing a pull-down connector 4 connected to the conductor 3a of the pull-down line 3 to a portion where the conductor 2a is exposed by removing a part of the coating 2b of the distribution line 2, the distribution line 2 and the pull-down line 3 is connected. Since the conductor 2a of the distribution line 2 and the pull-down connector 4 are exposed at the connecting portion of the two wires 2 and 3, it is necessary to surround the connecting portion with the insulating cover 10 in order to ensure safety and durability.

As shown in FIGS. 3A and 3B, the pull-down connector 4 includes a base portion 4a, a clamping plate portion 4b, an arc spring 4c, and a fastening screw 4d. The protruding portion on the lower side of the base portion 4a is a portion that is gripped by the tip tool of the insulating Yatco 110 (see FIG. 8). Here, the insulating Yatco 110 is an indirect hot wire tool having a gripping function, and is a kind of operation rod with a gripping tool attached to the tip. The sandwiching plate portion 4b is disposed to face the upper portion of the base portion 4a and is pressed against the base portion 4a side by an arc spring 4c.
By screwing the fixing screw 4d into the screw hole of the base portion 4a and the screw hole of the holding plate portion 4b, the base portion 4a and the holding plate portion 4b are connected. The arc spring 4c has one end fixed to the surface of 4a and the other end fixed to the surface of 4b. In a state where the base portion 4a and the clamping plate portion 4b are fastened by the fixing screw 4d, the arc-shaped spring 4c is locked between the base portion 4a and the clamping plate portion 4b.
In the state where the fixing screw 4d is loosened, the clamping plate portion 4b can be separated from the base portion 4a by applying an external force larger than the elastic force of the arc spring 4c. When the holding plate portion 4b is separated from the base portion 4a, a gap is formed between the holding plate portion 4b and the base portion 4a. In this gap, the conductor 2a exposed by peeling off the coating 2b in the middle of the distribution line 2, and the conductor 3a exposed by peeling off the coating 3b at one end of the pull-down line 3 are arranged. Therefore, a groove 4e and a groove 4f for guiding the conductor 2a and the conductor 3a are formed in the base portion 4a and the sandwiching plate portion 4b.
When the fastening screws 4d are tightened with the conductors 2a and 3a being placed in the grooves 4e and 4f, the clamping plate part 4b is fastened to the base part 4a side, and the conductors 2a and 3a are clamped with the base part 4a. It is fixed between the plate parts 4b. Thereby, the conductor 2a and the conductor 3a are prevented from being detached, and the distribution line 2 (conductor 2a) and the pull-down line 3 (conductor 3a) are electrically connected.

  As shown in FIG. 1, the other end of the pull-down line 3 is connected to a pole transformer 5. The pole transformer 5 changes the voltage applied to the pull-down line 3. In this embodiment, the voltage of 6.6 kV applied to the pull-down line 3 is changed to a voltage of 200V / 100V. The voltage of 200V / 100V converted by the pole transformer 5 is applied to the lamp line 7 through the pulling line 6.

<Structure of insulating cover 10>
Next, the structure of the insulating cover 10 will be described in detail. FIG. 4 is an explanatory diagram of the insulating cover 10 in an open state in which the first cover piece 20 and the second cover piece 30 are opened. FIG. 5 is a front view of the insulating cover 10 in the closed state. FIG. 6 is a bottom view of the insulating cover 10 in the closed state. FIG. 7 is a left side view of the insulating cover 10 in the closed state.

As shown in FIG. 4, the insulating cover 10 includes a first cover piece 20, a second cover piece 30, and a hinge part 40, and a resin material (for example, polyethylene) having electrical insulation is molded. It is made with. In the illustrated insulating cover 10, the upper end of the first cover piece 20 and the upper end of the second cover piece 30 are connected via a hinge part 40 so as to be opened and closed. Since the hinge part 40 is elastically deformed, the first cover piece 20 and the second cover piece 30 are opened by the restoring force of the hinge part 40 when no external force is applied.
The first cover piece 20 includes a first divided housing portion 21, two first divided guide portions 22 that are continuously provided at both axial ends of the first divided housing portion 21, and a lower edge of the first divided housing portion 21. The first fastening pieces 23 projecting from both end portions of the first partition housing portion 21 and the gripped portion 24 projecting from the central portion of the lower end edge of the first divided housing portion 21 are provided. The second cover piece 30 includes a second divided housing portion 31, two second divided guide portions 32 that are continuously provided at both axial ends of the second divided housing portion 31, and a lower edge of the second divided housing portion 31. A second fastening piece 33 projecting from both end portions of the first and second guide portions 32 and a sandwiched piece 34 extending in the axial direction from the tip of one second divided guide portion 32. In addition, the 1st fastening piece 23 is a kind of 1st fastening part, and the 2nd fastening piece 33 is a kind of 2nd fastening part.

In the closed state in which the first cover piece 20 and the second cover piece 30 are closed, the first divided housing portion 21 and the second divided housing portion 31 shown in FIG. Form. In other words, the first divided housing portion 21 constitutes a part of the housing portion 11, and the second divided housing portion 31 constitutes the other portion of the housing portion 11. The accommodating portion 11 has a hollow shape and forms a space in which the above-described pull-down connector 4 can be accommodated. In the present embodiment, a range from the first imaginary line indicated by reference numeral A to the second imaginary line indicated by reference numeral B in FIG. 5 and FIG. In other words, the range from the left fastening piece pair 23, 33 to the right fastening piece pair 23, 33 in the insulating cover 10 constitutes the accommodating portion 11.
The first divided guide portion 22 and the second divided guide portion 32 shown in FIG. 4 form the guide portion 12 shown in FIGS. 5 to 7 when the first cover piece 20 and the second cover piece 30 are closed. In other words, the first divided guide part 22 constitutes a part of the guide part 12, and the second divided guide part 32 constitutes the other part of the guide part 12. The guide portion 12 extends from both ends of the housing portion 11 in the axial direction, and forms a space for guiding the distribution line 2 and the pull-down line 3. As shown in FIG. 4, in the guide part 12, the base end side part comprised by the 1st base end side part 22a and the 2nd base end side part 32a has a cylindrical shape, and the 1st front end side part 22b. And the second tip side portion 32b have a tapered shape with a diameter reduced toward the tip. A first slit 22c and a second slit 32c are formed in the first tip side portion 22b and the second tip side portion 32b, respectively.

  The first fastening piece 23 and the second fastening piece 33 shown in FIG. 4 are fastened to each other by being pressed against each other with the cover pieces 20 and 30 closed, and the first cover piece 20 and the second cover piece 30 closed state is maintained. On the surface of the first fastening piece 23 facing the second fastening piece 33, a fastening projection 23 a having a tip diameter larger than that of the shaft portion is provided. The second fastening piece 33 is provided with a slit and a fitting hole 33a penetrating in the thickness direction. When the fixing protrusion 23a is inserted into the fitting hole 33a and the tip of the fixing protrusion 23a is penetrated to the opposite surface of the second fixing piece 33 as shown in FIGS. 6 and 7, the fixing protrusion 23a The leading end is brought into contact with the edge of the fitting hole 33a, and the first fastening piece 23 and the second fastening piece 33 are fastened against the restoring force of the hinge portion 40.

The gripped portion 24 is provided at the lower end of the first divided housing portion 21, in other words, at the edge portion far from the hinge portion 40. The gripped portion 24 is a tongue-like portion extending from the first divided housing portion 21, and extends downward from the lower end of the first divided housing portion 21. The gripped portion 24 is gripped by the insulating jacket 110 (see FIG. 8) when the insulating cover 10 is attached to the distribution line 2. In addition, regarding the to-be-held part 24, although provided in the 1st division | segmentation accommodating part 21 in this embodiment, you may provide in each of the 1st division | segmentation accommodating part 21 and the 2nd division | segmentation accommodating part 31. FIG. If there is no problem in the fastening operation of the first fastening piece 23 and the second fastening piece 33, a part other than the first divided housing part 21 and the second divided housing part 31 (for example, the first divided guide part 22 or the like) The gripped portion 24 may be provided in the second divided guide portion 32).
The sandwiched piece 34 is a kind of sandwiched portion that is sandwiched together with the distribution line 2 by a tongue 130 (a kind of sandwiching tool, see FIG. 10) attached to the tip of a common operation rod (a kind of operation rod). The sandwiched piece 34 is provided at the tip of the second divided guide portion 32 (second tip side portion 32 b), that is, the end of the second divided guide portion 32 opposite to the second divided housing portion 31. The sandwiched piece 34 is a curved plate piece (a shape obtained by dividing the cylindrical body into two parts) curved in a shape along the outer peripheral surface of the distribution line 2 (cover 2b), and is in the axial direction (the axial direction of the distribution line 2). It has been extended. The sandwiched piece 34 of the present embodiment is provided with a length of about 5 to 10 cm in the axial direction. In addition, regarding the to-be-clamped piece 34, in this embodiment, it is provided only in one 2nd division | segmentation guide part 32, However, You may provide only in one 1st division | segmentation guide part 22, and it has a corresponding positional relationship. You may provide in both the 1st division | segmentation guide part 22 and the 2nd division | segmentation guide part 32. FIG.

<Attaching work of insulating cover 10>
Next, an operation for attaching the insulating cover 10 to the distribution line 2 will be described. FIG. 8 is a diagram illustrating a state in which the insulating cover 10 in the open state is moved so that the distribution line 2 and the like are positioned between the first cover piece 20 and the second cover piece 30. FIG. 9 is a diagram illustrating a state in which the first cover piece 20 and the second cover piece 30 are brought close to each other by the cover presser. 10A and 10B are a perspective view and a partially enlarged view for explaining a state in which the clamped piece 34 is clamped together with the distribution line 2 by the tongue 130. FIG.
The attachment procedure described below is performed, for example, when performing work such as new installation, replacement, and removal of the pole transformer 5 shown in FIG. By attaching the insulating cover 10 to the distribution line 2, the pull-down connector 4 to which a voltage is applied can be protected from unnecessary contact.

As shown in FIG. 8, when the insulating cover 10 is installed, the gripped portion 24 is gripped by the tip tool of the insulating jacket 110. Note that the tip tool of the insulating Yatco 110 corresponds to a kind of gripping tool. If the gripped portion 24 is gripped, the insulating cover 10 in the open state is moved to the vicinity of the distribution line 2 via the insulating yoke 110. Thereafter, the longitudinal direction of the insulating cover 10 is aligned with the axial direction of the distribution line 2, and the distribution line 2, the pull-down line 3, and the pull-down connector 4 are arranged between the first cover piece 20 and the second cover piece 30. Then, the position of the insulating cover 10 is adjusted. When the position of the insulating cover 10 is adjusted, the hinge part is used so that the second cover piece 30 approaches the vicinity of the first cover piece 20 by using the common operation rod to which the cover presser 120 (a kind of tip tool) is attached. 40 (see FIG. 4) is bent.
The cover presser 120 includes a belt-like presser plate 121 that is bent into an upward convex mountain shape. Note that the top of the presser plate 121 is curved in an arc shape. After the cover retainer 120 is positioned above the insulating cover 10 in the open state, the proximal end side of the retainer plate 121 is closer to the first cover piece 20 and the distal end side than the top is the second cover piece 30. Each of them is brought into contact, and the cover presser 120 is further moved downward.
As shown in FIG. 9, when the cover presser 120 is moved downward, the inner surface of the presser plate member 121 comes into contact with the outer surfaces of the cover pieces 20 and 30 and presses the cover pieces 20 and 30 in the closing direction. The two cover pieces 30 are arranged in the vicinity of the first cover piece 20, and the sandwiched pieces 34 are arranged in the vicinity of the surface of the distribution line 2 (in the vicinity of the surface of the coating 2b).

As shown in FIG. 10A, the to-be-clamped piece 34 disposed near the surface of the distribution line 2 is clamped together with the distribution line 2 by a tongue 130 (a kind of tip tool) attached to the distal end of the common operation rod. . As shown in FIG. 10B, the tongue 130 includes a fixed clamping piece 131 whose tip portion is curved in a semicircular shape, and a movable clamping that approaches and separates in the arrow direction with respect to the distal end portion of the fixed clamping piece 131. And a piece 132. In a state where the fixed clamping piece 131 and the movable clamping piece 132 are separated from each other, the pair of the distribution line 2 and the clamped piece 34 is positioned inside the distal end portion of the fixed clamping piece 131, and then the common operation rod is operated to move the pair. When the holding piece 132 is moved toward the distal end side of the fixed holding piece 131, the held piece 34 can be held together with the distribution line 2.
In addition, although the structure of the tongue 130 is not limited, in the tongue 130 of this embodiment, the movable clamping piece 132 advances / retreats in the vertical direction by rotating the screw portion 133 forward and backward.
If the to-be-clamped piece 34 is clamped together with the distribution line 2, the first fastening piece 23 and the second fastening piece 33 are used by using an insulating jacket different from the insulating jacket 110 holding the gripped portion 24. Fasten to each other. Referring to FIG. 10 (a), the fastening protrusion 23a of the first fastening piece 23 is inserted into the fitting hole 33a of the second fastening piece 33, and the tip of the fastening protrusion 23a is inserted into the second fastening piece. The first fastening piece 23 and the second fastening piece 33 are fastened to each other by penetrating to the opposite surface of the wearing piece 33. Since the insulating cover 10 of this embodiment includes two sets of the first fastening pieces 23 and the second fastening pieces 33, the above fastening operation is performed for each set.
When the fastening operation is finished, the holding state by the tongue 130 is released and the tongue 130 is removed. At the same time, the cover presser 120 is removed, and the gripping state of the gripped portion 24 by the insulating jacket 110 is released. Thus, the attachment of the insulating cover 10 to the distribution line 2 is completed.

Since the insulating cover 10 of the present embodiment is provided with the sandwiched piece 34 at the tip of the second divided guide portion 32, the insulating cover 10 before the first fastening piece 23 and the second fastening piece 33 are fastened to each other. At this stage, the sandwiched piece 34 can be temporarily fixed to the distribution line 2, and workability after temporary fixing can be improved.
For example, by temporarily fixing the sandwiched piece 34 to the distribution line 2 with the tongue 130, the fall of the insulating cover 10 from the distribution line 2 can be effectively suppressed. In particular, when the first fastening piece 23 and the second fastening piece 33 are fastened, a strong external force is easily applied to the insulating cover 10. Since the clamped piece 34 is temporarily fixed to the power distribution line 2 and the gripped portion 24 is gripped by the insulating jacket 110, the insulating cover can be used even if the gripping force of the gripped portion 24 by the insulating jacket 110 is insufficient. The fall from the 10 distribution lines 2 can be suppressed.
Further, since the sandwiched piece 34 is provided in the second split guide portion 32 and the gripped portion 24 is provided in the first split housing portion 21, the sandwiched piece 34 is temporarily fixed to the distribution line 2 by the tongue 130. Even if the cover presser 120 is removed from the insulating cover 10 after that and the restoring force of the hinge portion 40 is applied, the movement of the second cover piece 30 is restricted by the tongue 130 and the insulating cover 10 returns to the open state. Can be suppressed. Even if the cover presser 120 is detached from the insulating cover 10, the first fastening piece 23 and the second fastening piece 33 are kept close to each other. The fastening piece 33 can be easily fastened.

<Modification>
(1) Regarding the sandwiched piece 34, a curved plate piece (a shape obtained by dividing the cylindrical body into two parts) curved into a shape along the outer peripheral surface of the distribution line 2 (cover 2b) is illustrated. As long as it can be held together with the distribution line 2, the shape is not limited to this.
(2) Regarding the sandwiched piece 34, the sandwiched piece 34 may be integrated with the second divided guide portion 32 when the insulating cover 10 is newly manufactured by injection molding, or an existing insulating cover is used. You may comprise so that the to-be-clamped piece 34 may be retrofitted with respect to ten 2nd division | segmentation guide parts 32 by welding, adhesion | attachment, etc.
(3) With respect to the accommodating portion 11, any shape can be adopted as long as the pull-down connector 4 in which the distribution line 2 and the pull-down line 3 are electrically connected can be stored.
(4) With respect to the guide unit 12, an example of guiding both the distribution line 2 and the pull-down line 3 is illustrated, but it is sufficient that at least the distribution line 2 can be guided. When the guide unit 12 guides only the distribution line 2, another guide unit for guiding the pull-down line 3 may be extended from the housing unit 11.
(5) Regarding the guide portion 12, the base end side portion is cylindrical and the tip end portion is tapered. However, the guide portion 12 is not limited to this shape. For example, the guide portion 12 may have a rectangular tube shape extending over its entire length.
(6) Regarding the first fastening part and the second fastening part, the configuration in which the fastening protrusion 23a is provided in the first fastening piece 23 and the fitting hole 33a is provided in the second fastening piece 33 is exemplified. It is not limited to. Other fastening forms such as a hook-and-loop fastener may be adopted as long as the first fastening part and the second fastening part are fastened to each other.

<Summary of Configuration, Action, and Effect of the Present Invention>
The insulating cover 10 according to the first aspect of the present invention includes a first cover piece 20 and a second cover piece 30 connected to the first cover piece 20 via a hinge portion 40 so as to be opened and closed. A hollow housing portion 11 that houses the pull-down connector 4 that electrically connects the electric wire 2 and the pull-down wire 4, and a guide portion 12 that extends from both axial ends of the housing portion 11 and guides the distribution line 2. The first cover piece 20 is formed when both the cover pieces 20 and 30 are in a closed state. The first cover piece 20 includes a first divided housing portion 21 constituting a part of the housing portion 11 and one guide portion 12. A first divided guide portion 22 that constitutes a portion, and a gripped portion 24 that is extended from the first divided housing portion 21 and is gripped by a tip tool included in the insulating jacket 110, and the second cover piece 30 includes: A second divided housing part 31 constituting the other part of the housing part 11; A second divided guide part 32 constituting the other part of each guide part 12, and at least one of the divided guide parts 22, 32 of the cover pieces 20, 30 is arranged by a tongue 130 provided in the common operation rod. A clamped piece 34 that is clamped together with the electric wire 2 is provided.
When the sandwiched piece 34 provided in the divided guide portions 22 and 32 is clamped together with the distribution line 2 by the tongue 130, the insulating cover 10 is temporarily fixed to the distribution line 2, and therefore the insulation cover 10 falls from the distribution line 2 Can be effectively suppressed, and workability when the insulating cover 10 is attached to the distribution line 2 can be improved.

In the insulating cover 10 according to the second aspect of the present invention, the first cover piece 20 is provided with a first fastening piece 23, and the second cover piece 30 is first when both cover pieces 20, 30 are closed. A second fastening piece 33 to be fastened to the fastening piece 23 is provided, and the sandwiched piece 34 is provided on at least one of the second divided guide portions 32.
Since the sandwiched piece 34 provided in the second divided guide portion 32 is sandwiched together with the distribution line 2, the movement of the second cover piece 30 is restricted even if the restoring force of the hinge portion 40 acts, and the insulating cover 10. Can be prevented from returning to the open state, and the first fastening piece 23 and the second fastening piece 33 can be easily fastened.

The method of attaching the insulating cover 10 according to the third aspect of the present invention is to hold the gripped portion 24 with the tip tool of the insulating jacket 110 while the first cover piece 20 and the second cover piece 30 are open. The step of positioning the distribution line 3 between the first cover piece 20 and the second cover piece 30 via the pin and the clamped piece 34 together with the distribution line 2 by the tongue 130 via the common operation rod provided with the tongue 130 And a step of closing the first cover piece 20 and the second cover piece 30 with an insulating jacket different from the insulating jacket 110 in a state where the clamped piece 34 is sandwiched. .
Before the first cover piece 20 and the second cover piece 30 are closed, the sandwiched piece 34 is held together with the distribution line 2 by the tongue 130, so that the fall of the insulating cover 10 from the distribution line 2 is effectively performed. Therefore, the workability when the insulating cover 10 is attached to the distribution line 2 can be improved.

DESCRIPTION OF SYMBOLS 2 ... Distribution line, 3 ... Pull-down line, 4 ... Pull-down connector, 10 ... Insulation cover, 20 ... 1st cover piece, 21 ... 1st division | segmentation accommodating part, 22 ... 1st division | segmentation guide part, 23 ... 1st fastening piece , 24 ... gripped part, 30 ... second cover piece, 31 ... second divided housing part, 32 ... second divided guide part, 33 ... second fastening piece, 34 ... clamped piece, 40 ... hinge part, 110 ... Insulated Yatco, 120 ... Cover presser, 130 ... Tong

Claims (3)

A first cover piece; and a second cover piece connected to the first cover piece via a hinge portion so as to be freely opened and closed, and containing a connection member that electrically connects the distribution line and the pull-down line An insulating cover that is formed when the cover pieces are in a closed state, and a hollow-shaped housing portion and a guide portion that extends from both axial ends of the housing portion and guides the distribution line,
The first cover piece extends from a first divided housing portion that forms a part of the housing portion, a first divided guide portion that forms a part of each guide portion, and the first divided housing portion. A gripped portion gripped by a gripping tool provided on the operation rod,
The second cover piece includes a second divided housing portion that constitutes the other portion of the housing portion, and a second divided guide portion that constitutes the other portion of each guide portion,
The insulating cover according to claim 1, wherein one of the divided guide portions of the at least one cover piece is provided with a clamped portion that is clamped together with the distribution line by a clamp provided in the operation rod. The first cover piece includes a first fastening portion,
The second cover piece includes a second fastening portion that fastens to the first fastening portion when the both cover pieces are in the closed state,
The insulating cover according to claim 1, wherein the sandwiched portion is provided on at least one of the second divided guide portions. An attachment method for attaching the insulating cover according to claim 1 or 2 to the distribution line,
The gripped portion is gripped by the gripping tool in a state where the first cover piece and the second cover piece are open, and the first cover piece and the second cover piece are interposed via an operation rod provided with the gripping tool. Positioning the distribution line between
Clamping the clamped portion together with the distribution line by the clamping tool via an operating rod provided with the clamping tool;
Closing the first cover piece and the second cover piece with an operating rod in a state where the sandwiched portion is sandwiched;
A method of attaching an insulating cover, comprising:

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