JP2016010202A - Power cable connection part and anticorrosive cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power cable connection part capable of performing waterproof and protection around a grounding cable with an exterior structure covered with a protective tubing, and with simple and compact configuration, and also to provide an anticorrosive cover.SOLUTION: A power cable connection part includes a cylindrical anticorrosive cover 31 into which a power cable 11 is inserted and which covers a connection part between the power cable 11 and a flat knitting metal wire 21. A terminal member 22 connected to the side opposite to the power cable 11 of the flat knitting metal wire 21, the end of the terminal member into which a crimp part of a crimp terminal having waterproofness is inserted, or a cylindrical part 33 for pulling out only the terminal part to the outside of the anticorrosive cover 31 is made to be formed integrally with this anticorrosive cover 31.

Description

  The present invention relates to a power cable connecting portion and a corrosion protection cover provided with a ground wire drawing structure.

The connection portion of the power cable has a structure in which a conductor-connected portion is covered with a reinforcing insulating layer or the like and is covered with a protective tube (steel tube) such as a copper tube in order to waterproof and protect these portions. Moreover, the drawer | drawing-out part for earth | grounding the metal shielding layer of an electric power cable is provided (for example, refer patent document 1).
The lead-out portion for grounding usually has a structure in which a grounding terminal seat in which a metal plate or a metal pipe material is brazed on a protective tube is provided.

Japanese Utility Model Publication No. 01-92759

The conventional configuration is disadvantageous in reducing the cost of the power cable connecting portion because the grounding terminal seat protrudes from a protective tube made of a copper tube or the like, resulting in an increase in the outer diameter.
In addition, the surface of the protective tube, the grounding terminal seat and the one connected to it are covered with vinyl chloride resin by dipping for waterproofing, but dipping requires advanced technology and is a costly problem was there.

  The present invention has been made in view of the above-described circumstances, and has an exterior structure that is covered with a protective tube, and a power cable connection portion that can waterproof and protect a ground wire with a simple and compact configuration, and an anticorrosion used for this. The purpose is to provide a cover.

  In order to solve the above-described problems, the power cable connecting portion of the present invention covers the connecting portion of the power cable conductor with a reinforcing insulating layer and a protective tube, and connects one end of the grounding conductor to the metal shielding layer of the power cable. And a power cable connecting portion having a ground wire lead structure for connecting a ground wire to the other end of the grounding conductor, wherein the power cable is inserted and the power cable is connected to the grounding conductor. A cylindrical anticorrosion cover is provided to cover the portion, and the anticorrosion cover is integrally formed with a cylindrical portion for pulling out the grounding conductor.

  In the above configuration, the anticorrosion cover is formed of a resin material. Moreover, the said structure WHEREIN: As for the said cylindrical part, the said grounding conductor is penetrated in parallel with the longitudinal direction of the said power cable, It is characterized by the above-mentioned.

Further, in the above configuration, the anticorrosion cover has a bulging portion that bulges in a direction perpendicular to the longitudinal direction of the power cable between the open end portions provided on both sides in the longitudinal direction of the power cable. The tubular portion extends outward from a wall portion on one side in the longitudinal direction of the power cable in the bulging portion.
In the above configuration, the opening end portion has a circular cross section orthogonal to the longitudinal direction of the power cable, and the bulging portion has an elliptical cross section.

  In the above configuration, the grounding conductor is a flat knitted metal wire connected to a terminal member having a circular cross section, and one end of the flat knitted metal wire is connected to a metal shielding layer of the power cable. The other end is connected to the terminal member.

  The anticorrosion cover of the present invention includes a cylindrical cover body that covers a grounding conductor having one end connected to a metal shielding layer of the power cable, and the other end of the grounding conductor. It has the cylindrical part for drawing out outside, It is characterized by the above-mentioned.

  According to the present invention, the surrounding structure covered with the protective tube can be waterproofed and protected around the ground wire with a simple and compact configuration.

It is the figure which showed Embodiment 1 of the power cable connection part of this invention. It is the figure which showed the anti-corrosion cover with the periphery structure. (A) is the figure which showed the cross section of the anticorrosion cover along the longitudinal direction of an electric power cable, (B) is the figure which looked at the anticorrosion cover from the right side of FIG. (A)-(C) is a figure for demonstrating the process of assembling the grounding conductor and the anticorrosion cover. It is the figure which showed Embodiment 2 of the power cable connection part of this invention. (A) is the figure which showed the waterproof type crimp terminal, (B) is the figure which showed the waterproof type crimp terminal from the direction different from (A). (A)-(C) is a figure for demonstrating the process of assembling the grounding conductor and the anticorrosion cover. A modification of the anticorrosion cover is shown, (A) is a cross-sectional view, and (B) is a view seen from the right side. It is a figure which shows the principal part of the connection part of the power cable using the other modification of a corrosion prevention cover. It is the figure which showed the other example of the power cable connection part of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
<Embodiment 1>
FIG. 1 is a diagram illustrating a power cable connection unit 10 according to an embodiment of the present invention. In FIG. 1, the lower side coincides with the downward direction at the time of installation, the upper side coincides with the upward direction at the time of installation, and the left-right direction coincides with the longitudinal direction (= axial direction) of the power cable.
A power cable connecting portion 10 shown in FIG. 1 is applied to an intermediate connecting portion of a power cable 11 constituting an underground power transmission line, and a conductor 12 exposed at the ends of a pair of power cables 11 is connected to a conductor connecting tube. 17, covered with a reinforcing insulating layer 18, subjected to a shielding treatment from above, and connected to a connection portion 15 covered with a protective tube 14 for forming an exterior, both sides of the connection portion 15, that is, A grounding conductor lead-out portion 16 is provided that pulls out the grounding conductor 20 from the metal shielding layer (cable aluminum cover) 11A of the power cable 11 formed in the vicinity of the end of the protective tube 14.

  In this embodiment, the grounding conductor 20 is composed of a flat knitted metal wire 21 and a terminal member 22 having a circular cross section, as will be described later, and is connected to the inner conductor or the outer conductor of the coaxial cable 23 which is a grounding wire. Thereby, the metal shielding layer 11A of the power cable 11 is electrically grounded. As shown in FIG. 1, the grounding conductor lead-out portion 16 is covered with an anticorrosion cover 31. In the present specification, “ground line” is used to include a bond line for cross bond connection.

The end portion of each power cable 11 is subjected to terminal treatment for sequentially stripping the covering portions such as the metal shielding layer 11 </ b> A and the insulating layer to expose the conductor 12, and each exposed conductor 12 is connected to both ends of the conductor connecting pipe 17. Each is inserted. In this state, the conductors 12 are mechanically and electrically connected by compressing the conductor connecting pipe 17 from the outside in the radial direction.
Note that the conductor 12 is not limited to the configuration in which the conductor connection pipe 17 is compression-connected, and the conductors 12 may be connected by welding.

  A portion where the conductor 12 is connected by the conductor connecting pipe 17 is covered with a reinforcing insulating layer 18. An external semiconductive layer (not shown) is formed in a range extending from the outer periphery of the reinforcing insulating layer 18 to the metal shielding layers 11A and 11A of the left and right power cables 11 and 11. The connection portion 15 of this embodiment is a so-called insulating connection box, and the external semiconductive layer is separated into a right external semiconductive layer and a left external semiconductive layer, and an external semiconductive layer is provided therebetween. There is no insulating part (edge cutting part). The right external semiconductive layer is electrically connected to the metal shield layer 11A of the right power cable 11, and the left external semiconductive layer is electrically connected to the metal shield layer 11A of the left power cable 11. It is connected to the.

The protective tube 14 is provided for waterproofing the power cable connecting portion 10 and preventing damage, and is attached so as to cover the outer periphery of the reinforcing insulating layer 18 provided with the external semiconductive layer.
In this example, the protective tube 14 has a laminated structure in which a resin layer is provided on the outer periphery of the water shielding layer. The protective tube 14 may be one in which these layers are integrated in advance, but these layers may be separate before being attached to the connection portion 15 of the power cable 11. good. That is, the protective tube 14 may be formed by providing a water shielding layer on the outer periphery of the reinforcing insulating layer 18 and then laminating a resin layer.
The resin layer of the protective tube 14 can be formed by winding a tape made of a resin such as polyethylene or by covering the tube. These tapes and tubes are desirably shrinkable. In particular, it is desirable to be heat-shrinkable, but it may be room-temperature shrinkable.
The water shielding layer of the protective tube 14 can be formed of, for example, a metal foil such as an aluminum foil, but may be a layer formed by evaporating metal on the inner surface of the tube 14.

The protective tube 14 covers the connecting portion 15 made of the reinforcing insulating layer 18 and the like of the power cable connecting portion 10, and portions where the metal shielding layer 11 </ b> A of the power cable 11 is exposed are formed on both sides thereof. The exposed portion of the metal shielding layer 11 </ b> A is a ground conductor lead-out portion 16 that is connected to one end of a flat knitted metal wire 21 that constitutes the ground conductor 20 and is covered with an anticorrosion cover 31 described later.
More specifically, for the flat knitted metal wire 21, a flat knitted copper wire or the like having a cross-sectional area through which a ground fault current can flow, which is necessary in the metal shielding layer 11A, is used. One end of the flat knitted metal wire 21 is connected to the metal shielding layer 11 </ b> A by soldering (brazing), and the other end is connected to the terminal member 22.

  In this embodiment, the terminal member 22 is a metal round bar having conductivity, and the flat knitted metal wire 21 is inserted into a hole 22A formed at one end thereof and connected by compression or pressure bonding. . A male screw 22B is formed at the end opposite to the one end. The inner conductor or the outer conductor of the coaxial cable 23 is connected through a compression or pressure-bonding sleeve 41 provided on one side with an insertion hole formed with a female screw that can be fitted to the male screw 22B. Note that the compression or pressure-bonding sleeve 41 and the terminal member 22 may be connected without providing a screw portion.

As shown in FIG. 1, the connection portion between the metal shielding layer 11 </ b> A of the power cable 11 and the grounding conductor 20 is covered with a corrosion protection cover 31. The anticorrosion covers 31 are respectively disposed on both sides of the connecting portion 15. Hereinafter, the left anticorrosion cover 31 in FIG. 1 will be described as an example, and redundant description of the right anticorrosion cover 31 will be omitted.
FIG. 2 is a view showing the anticorrosion cover 31 together with the peripheral configuration.
The anticorrosion cover 31 includes a cover main body 32 and a cylindrical portion 33, and is integrally formed of a resin material made of highly rigid polyethylene. The cover body 32 is formed in a cylindrical shape that covers the connection portion between the metal shielding layer 11 </ b> A of the power cable 11 and the flat knitted metal wire 21 while the power cable 11 is inserted therethrough. The cylindrical portion 33 is a portion through which the terminal member 22 is inserted, and accommodates one end of the terminal member 22 in the cover main body 32 and pulls the other end out of the cover main body 32.

3A is a view showing a cross section of the anticorrosion cover 31 along the longitudinal direction of the power cable 11 (= the axial direction of the power cable 11), and FIG. 3B shows the anticorrosion cover 31 in FIG. It is the figure seen from the right side.
As shown in FIGS. 2, 3 (A) and 3 (B), the cover main body 32 has a circular cylindrical shape having an inner diameter substantially equal to the outer diameter of the power cable 11 on both sides in the longitudinal direction of the power cable 11. In addition to having open end portions 34 and 35, the open end portions 34 and 35 have an elliptical cross section in which a bulging portion 36A bulging in the vertical direction (upward) with respect to the longitudinal direction of the power cable 11 is formed. doing.
For this reason, when this anticorrosion cover 31 is passed through the power cable 11, as shown in FIG. 2, a vacant space is formed above the power cable 11 in the bulging portion 36A. The wiring space of the line 21 can be secured.

That is, the bulging portion 36A includes a peripheral wall portion 36K (see FIG. 3B) along the axial direction of the power cable 11, and a pair of side walls that block between the peripheral wall portion 36K and the front and rear opening end portions 34 and 35. Parts 36B and 36C (see FIGS. 3A and 3B). By these wall portions 36K, 36B and 36C, the space above the power cable 11, that is, the wiring space of the flat knitted metal wire 21, can be enclosed and waterproofed and protected.
As shown in FIG. 2, the cylindrical portion 33 extends to the outside from the side wall portion 36 </ b> C on the side away from the connection portion between the power cable 11 and the flat braided metal wire 21, of the pair of side wall portions 36 </ b> B and 36 </ b> C. The power cable 11 extends away from the connection portion along the longitudinal direction of the power cable 11.

  The grounding conductor 20 is drawn out from the cylindrical portion 33. That is, the terminal member 22 to which the flat knitted metal wire 21 is connected is inserted through the cylindrical portion 33 and led out to the outside. The flat knitted metal wire 21 and the terminal member 22 are arranged in order along the longitudinal direction of the power cable 11. In the anticorrosion cover 31 of this embodiment, the cylindrical portion 33 is formed on the side wall portion 36C of the bulging portion 36A, and the flat knitted metal wire 21 can be arranged without being largely bent. The operation of inserting into 33 is also easy.

Next, a process of assembling the grounding conductor 20 and the anticorrosion cover 31 will be described with reference to FIGS. 4 (A), 4 (B), and 4 (C).
The flat knitted metal wire 21 and the terminal member 22 are compressed or crimped to create a grounding conductor 20, and then the terminal member 22 is connected as shown in FIGS. 4 (A) to 4 (C). Inserted from the inside of the anticorrosion cover 31 into the cylindrical portion 33, one end of the terminal member 22 is positioned in the anticorrosion cover 31, and the other end of the terminal member 22 is exposed to the outside of the cylindrical portion 33 (preparation of anticorrosion cover) Process). At this time, the flat knitted metal wire 21 is drawn out from the opening end 34 of the anticorrosion cover 31 to the outside.

Next, the anticorrosion cover 31 is inserted together with the terminal member 22 to a position where the brazed portion on the metal shielding layer 11A of the power cable 11 is exposed (anticorrosion cover insertion step). Then, after soldering the braided metal wire 21 to the metal shielding layer 11A of the power cable 11 (brazing), the anticorrosion cover 31 is returned to a position (position shown in FIG. 1) covering the brazing portion (brazing process). ).
Between the one open end 35 of the anticorrosion cover 31 and the protective tube 14 and between the other open end 34 of the anticorrosion cover 31 and the power cable 11 is waterproofed by a blocking member. A known member such as a heat shrinkable tube made of polyethylene may be used as the closing member.

  The above assembling process is for the left anticorrosion cover 31 in FIG. 1, but the right anticorrosion cover 31 in FIG. 1 is a position where the brazed portion on the metal shielding layer 11A of the power cable 11 is exposed. It is the same until it is inserted into the power cable 11 and the flat braided metal wire 21 is soldered (brazed) to the metal shielding layer 11A of the power cable 11, but then the position where the anticorrosion cover 31 covers the brazed portion ( The point of insertion into the protective tube 14 side is further different up to the position shown in FIG. Thereafter, the same operation can be performed.

As described above, in the present embodiment, as shown in FIGS. 1 and 2, the power cable 11 is inserted, and the connection portion between the power cable 11 and the flat braided metal wire 21 of the grounding conductor 20 is provided. A cylindrical anticorrosion cover 31 is provided, and the anticorrosion cover 31 includes a cylindrical portion 33 through which a terminal member 22 connected to the side opposite to the power cable 11 of the flat knitted metal wire 21 is inserted and drawn out. Since it is formed integrally, the surroundings of the grounding conductor 20 constituting a part of the grounding wire can be easily waterproofed and protected by the anticorrosion cover 31.
As a result, the exterior portion of the power cable 11 is configured by a protective tube (steel tube) such as a copper tube, and the grounding is simpler and more compact than the conventional configuration in which a terminal seat for grounding is provided on the protective tube. The periphery of the wire can be waterproofed and protected, which is advantageous for cost reduction.

Moreover, in this structure, it covers with the reinforcement insulating layer 18 centering on the connection part of the conductor 12 exposed to the edge part of the power cable 11, and covers the connection part 15 formed of the shielding process and the water shielding layer with the protective tube 14. Since the ground wire is drawn out from the metal shielding layer 11A of the power cable 11 through the flat knitted metal wire 21 and the terminal member 22 at a position away from the protective tube 14, the connection portion and the surrounding of the ground wire are provided. Can be waterproofed and protected without using a protective tube such as a copper tube, and the structure can be simplified and miniaturized. As a result, it is possible to provide the power cable connecting portion 10 that is advantageous for cost reduction. Since the power cable connection portion 10 can be accommodated in a small coffin box, the amount of the compound filled in the coffin box can be reduced. Therefore, the power cable connection portion 10 is advantageous in terms of cost.
Moreover, in this configuration, since the anticorrosion cover 31 is integrally formed of a resin material, it is easy to manufacture, and it is easy to ensure waterproofing / protection performance, and the number of components can be reduced.

Moreover, in this structure, as shown in FIG. 1 etc., since the terminal part 22 is penetrated in the cylindrical part 33 in parallel with the longitudinal direction of the power cable 11, the terminal member 22 is inserted from the inside of the anticorrosion cover 31. Easy to do. Moreover, since the grounding wire path (grounding conductor 20) made of the flat knitted metal wire 21 and the terminal member 22 runs along the longitudinal direction of the power cable 11, it is not necessary to arrange the grounding wire in a complicated manner, and the length of the grounding wire is also long. It can be kept short.
Further, as shown in FIGS. 3A and 3B, the anticorrosion cover 31 is provided between the open end portions 34 and 35 provided on both sides in the longitudinal direction of the power cable 11. The cylindrical portion 33 extends outwardly from the side wall portion 36C on one side in the longitudinal direction of the power cable 11 in the bulged portion 36A. The cylindrical portion 33 can be provided by using a stepped wall formed between the protruding portion 36A and the opening end portion 35. Moreover, it is possible to perform the attachment operation | work of the terminal member 22 and the flat knitted metal wire 21, and accommodation of these using the space formed by the bulging part 36A in a proper manner.

As shown in FIG. 3B, the open end portions 34 and 35 have a circular cross section orthogonal to the longitudinal direction of the power cable 11, and the bulging portion 36A has an elliptical cross section. Therefore, the accommodating part which accommodates the flat knitted metal wire 21 which comprises the conductor 20 for grounding can be ensured, making it the compact shape along the outer periphery of the power cable 11. FIG.
Moreover, since the anticorrosion cover 31 is formed in an egg-shaped curved surface, the strength can be efficiently increased as compared with the case where the anticorrosion cover 31 is formed in a rectangular shape.

  Further, as shown in FIGS. 1 and 2, the flat knitted metal wire 21 constituting the grounding conductor 20 can be flexibly routed, and the attaching operation can be facilitated.

<Embodiment 2>
FIG. 5 shows a second embodiment of the power cable connecting portion 10 of the present invention, which is different from the first embodiment in the configuration of the grounding conductor 20. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and the description thereof is omitted.

  The grounding conductor 20 of this embodiment uses a waterproof crimp terminal 22 </ b> C as the terminal member 22. As shown in FIG. 6, the waterproof crimp terminal 22 </ b> C is a conductive metal terminal including a cylindrical section (crimp section) 22 d having an annular cross section and a flat terminal section 22 e. One end of the cylindrical portion 22d is opened and the other end is closed. The terminal portion 22e is connected to the other closed end of the cylindrical portion 22d.

One end of the flat knitted metal wire 21 is inserted into the cylindrical portion 22d of the waterproof crimp terminal 22C, and the cylindrical portion 22d is compressed and connected by crimping, thereby forming the grounding conductor 20 in which these are integrated. Yes.
As shown in FIG. 5, in this embodiment, the waterproof crimp-type terminal in which the connection between the grounding conductor 20 and the coaxial cable 23 is compression-connected to the end portions of the inner conductor and the outer conductor of the coaxial cable 23. The same crimping terminal 22C ′ as 22C is bolted to the waterproof crimping terminal 22C of the grounding conductor 20.

  When the waterproof crimp terminal 22C is used in this way, the anticorrosion cover 31 and the grounding conductor 20 are combined as shown in FIGS. 7 (A) to 7 (C). That is, the flat knitted metal wire 21 is inserted in advance into the cylindrical portion 33 of the anticorrosion cover 31 (FIG. 7A), and the waterproof knitted terminal is connected to the flat knitted metal wire 21 drawn out of the cylindrical portion 33. After 22C is crimped and connected (FIG. 7 (B)), the cylindrical portion 22d is returned into the cylindrical portion 33 so that only the terminal portion 22e is exposed (FIG. 7 (C)).

  In order to attach the combined anticorrosion cover 31 to the power cables 11 and 11 as shown in FIG. 7C, the position where the brazing portion on the metal shielding layer 11A is exposed to the electric power cable 11 with respect to the anticorrosion cover 31. (Anti-corrosion cover insertion process). Subsequently, after soldering (brazing) the flat knitted metal wire 21 to the metal shielding layer 11A of the power cable 11, the anticorrosion cover 31 is moved to a position covering the brazed portion (brazing step). At the same time or after this, the ends of the anticorrosion cover 31 and the protective tube 14 are combined.

In this embodiment, a flexible flat knitted metal wire 21 is inserted in advance into the cylindrical portion 33 of the anticorrosion cover 31 and is waterproofed and crimped to the flat knitted metal wire 21 drawn out of the cylindrical portion 33. Since the cylindrical portion 22d is returned to the cylindrical portion 33 after the terminal 22C is crimped, the assembly of the anticorrosion cover 31 and the grounding conductor 20 is easy.
Moreover, the cylindrical part 33 of the anticorrosion cover 31 is inserted with a cylindrical part (crimp part) 22d of a waterproof crimp terminal 22C connected to the opposite side of the power cable 11 of the flat knitted metal wire 21 to the terminal part 22e. Since only the anticorrosion cover 31 is drawn out, the grounding wire can be easily waterproofed and protected by the anticorrosion cover 31 as in the first embodiment.

The above-described embodiment is merely an aspect of the present invention, and can be arbitrarily modified and applied without departing from the gist of the present invention.
For example, in each of the above-described embodiments, the case where the cross-sectional shape of the portion where the bulging portion 36A between the opening end portions 34 and 35 in the anticorrosion cover 31 is formed as an ellipse has been described. As shown in FIG. 8A and FIG. 8B, the portion where the bulging portion 36A is formed may be formed in a perfect circle having a larger diameter than the opening end portions 34 and 35. That is, the shape of the anticorrosion cover 31 can be changed as appropriate.
In each of the above-described embodiments, the case where the anticorrosion cover 31 is integrally formed of a resin material has been described. However, the present invention is not limited to this, and a divided structure may be used. In the case of the divided structure, for example, as shown in FIG. 9, it may be formed in a divided structure divided in the longitudinal direction of the power cable 11. Here, in FIG. 9, the code | symbol 31A has shown the anticorrosion cover half body of the longitudinal direction one side, and the code | symbol 31B has shown the anticorrosion cover half body of the longitudinal direction other side. In this case, since the anticorrosion cover 31 is divided in the longitudinal direction, the inside of the anticorrosion cover 31 can be easily accessed, and attachment work of the flat knitted metal wire 21, the terminal member 22, or the waterproof crimp terminal 22C and the anticorrosion cover 31 is facilitated. . However, it is necessary to close the gap between the anticorrosion cover halves 31A and 31B.

In addition, since the power cable connecting portion 10 of each of the above-described embodiments is an example in which the present invention is applied to a so-called insulated connection box, two grounding conductor lead portions 16 for pulling out the flat metal wire 21 are provided. However, when the present invention is applied to a normal connection box, as shown in FIG.
Moreover, although the above-mentioned embodiment demonstrated the case where this invention was applied to the power cable connection part 10 which connects the power cable 11 which comprises an underground power transmission line, the electric power which connects power cables other than an underground power transmission line You may apply this invention to a cable connection part.

DESCRIPTION OF SYMBOLS 10 Power cable connection part 11 Power cable 11A Metal shielding layer 12 Conductor 14 Protection tube 18 Reinforcement insulating layer 20 Grounding conductor 21 Flat braided metal wire 22 Terminal member 22C, 22C 'Waterproof type crimp terminal 22d Tube part (crimp part)
31 Corrosion-proof cover 32 Cover body 33 Cylindrical part 34, 35 Open end part 36A Swelling part 36B, 36C Side wall part

Claims (7)

A grounding wire that covers the connection portion of the conductor of the power cable with a reinforcing insulating layer and a protective tube, connects one end of the grounding conductor to the metal shielding layer of the power cable, and connects the grounding wire to the other end of the grounding conductor A power cable connection portion with a drawer structure,
The power cable is inserted and provided with a cylindrical anticorrosion cover that covers a connection portion between the power cable and the grounding conductor. The anticorrosion cover has a cylindrical part for pulling out the grounding conductor to the outside. The power cable connecting portion is characterized in that is integrally formed.   The power cable connection part according to claim 1, wherein the anticorrosion cover is formed of a resin material.   The power cable connecting portion according to claim 1, wherein the cylindrical portion is inserted with the grounding conductor parallel to a longitudinal direction of the power cable. The anticorrosion cover has a bulging portion that bulges in a direction perpendicular to the longitudinal direction of the power cable between open end portions provided on both sides in the longitudinal direction of the power cable,
The said cylindrical part is extended outside from the wall part of the longitudinal direction one side of the said power cable in the said bulging part, The power cable connection part as described in any one of Claim 1 thru | or 3 characterized by the above-mentioned. .   5. The power cable connecting portion according to claim 4, wherein the opening end portion has a circular cross section orthogonal to the longitudinal direction of the power cable, and the bulging portion has an elliptical cross section. .   The grounding conductor is a flat knitted metal wire connected to a terminal member having a circular cross section, one end of the flat knitted metal wire is connected to the metal shielding layer of the power cable, and the other end is It is connected to a terminal member, The power cable connection part according to any one of claims 1 to 5 characterized by things. A cylindrical cover body that covers the grounding conductor having one end connected to the metal shielding layer of the power cable, while the power cable is inserted therethrough,
An anticorrosion cover comprising a cylindrical portion for pulling out the other end of the grounding conductor.

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