JP2021118617A - Insulation coated conductor connection body - Google Patents

Abstract

To provide a conductor connection body which is used in a non-sealed closed space in a housing, and by which risk of an electric shock due to contact with an electric conduction part and a terminal is less, and electrical accidents such as a tracking phenomenon and a ground fault are hard to occur even when it is not washed by rainfall, etc. when dust is accumulated.SOLUTION: An insulation coated conductor connection body 1 comprises a rod-like central conductor 6 and an electric insulation member 2 which coats the surroundings of the central conductor 6, accommodates an energization part which energizes the central conductor 6, and the other end connection part which is connected with the energization part and formed on the other end T2 of the central conductor 6 in at least a non-sealed closed space of an inner housing, accommodates the inner housing in an outer housing, projects one end connection part which is formed on one end T1 of the central conductor 6 outward from the inner housing to be arranged in a workspace of the outer housing, in which the electric insulation member 2 is constituted of: a first insulation member 3 consisting of ethylene propylene rubber and having a first cylindrical inner peripheral surface 31; and a second insulation member 4 consisting of silicone rubber and having a second cylindrical inner surface 41.SELECTED DRAWING: Figure 1

Description

The present invention relates to an insulating coated conductor connector. More specifically, the present invention relates to an insulating coated conductor connector suitable for terminating, extending or branching a lamp line such as a railway field and a conductive line such as a power line.

Conventionally, in order to supply electric power to railway station buildings, railroad crossings, traffic lights, etc., conductive lines such as lamp lines and power lines have been laid along the railroad tracks. Here, the electric power cable constituting the conductive line needs to be branched in order to supply electric power to the station building or the like, and it is necessary to electrically connect and extend the two electric power cables between stations or the like. .. A junction box is often used for branching or extending such a power cable, and the part where the power cable is electrically connected for branching or extending the power cable is housed in a housing such as a junction box. It is often done.

Inside the junction box, for example, as shown in FIG. 4, a plurality of power cables were connected to each of the three phases of the conductive wire. Of these three phases, in the phase shown on the left side, terminals 93a and 94a are provided on the power cables 91a and 92a to be connected, respectively, and these terminals 93a and 94a are bolted to the energizing portion 95a such as a bus bar. It was connected by fixing it. Of the three phases, two phases located at the center and on the right side were also connected in the same manner as the left side phase. As a conductor connector constituting the ends of these power cables 91a to 91c and 92a to 92c, the power cable is exposed in the vicinity of terminals 93a to 93c and 94a to 94c of the power cables 91a to 91c and 92a to 92c. Terminal members 96a to 96c and 97a to 97c made of silicone rubber were provided at the locations where the wires were formed.

On the other hand, as a conductor connector constituting the end of the power cable, for example, in Patent Document 1, as a conductor connector of a high-pressure distribution wire installed outdoors, the insulating layer into which the end of the power cable is inserted is ethylene propylene rubber. A conductor connector composed of a single rubber of (EP rubber) or silicone rubber is described.

Japanese Unexamined Patent Publication No. 2008-220009

However, dew condensation occurs inside the (outer) housing such as the junction box that houses the connection part of the conductive wire, and the surface of the conductor connector has moisture due to the high humidity internal environment. , Dust or dust adheres to the surface of the conductor connection, and electricity flows along these contaminants, which may cause a tracking phenomenon on the surface of the conductor connection or the power cable adjacent to the conductor connection.

Of these, the conductor connector described in Patent Document 1 is premised on use outdoors, and it suppresses the occurrence of a tracking phenomenon due to the accumulation of dust by washing away the dust by rainfall. .. For this reason, in the conductor connector, dust enters the inside, and the dust is easily adsorbed and accumulated due to humidity, and the accumulated dust is not easily washed away due to rainfall or the like (outside) indoors such as inside a housing. There has been a demand for a conductor connector that is unlikely to cause an electrical accident due to a tracking phenomenon or a ground fault, even if it is premised on the use of. The "tracking phenomenon" refers to a phenomenon in which a minute current flows due to the accumulation of dust and moisture (humidity) between the electrodes, which creates a carbonized conductive path (track) and short-circuits (ignites) between the electrodes. .. A "ground fault" is a ground (ground / ground) with a low resistance value that is not the original electricity supply destination (target location) due to poor insulation in each member (conductor connector, etc.), high-voltage cable, or housing. It is a phenomenon in which electricity flows out.

Further, the terminal member shown in FIG. 4 is mainly housed in an (outer) housing such as a junction box, but is conductive because it is directly connected to terminals 93a to 93c and 94a to 94c. Terminals when the power cables 91a to 91c and 92a to 92c are energized due to some mistake during wire construction or inspection, or when the power cables 91a to 91c and 92a to 92c are not sufficiently grounded. There was a risk of electric shock to the operator via 93a-93c and 94a-94c.

Here, from the viewpoint of reducing the risk of electric shock to the operator, the inner housing forming a closed space is provided so as to surround the terminals 93a to 93c and 94a to 94c housed in the (outer) housing. The present inventor has proceeded with studies on providing the housing inside the (outside) housing (not shown) to form the housing in a double structure. The closed space formed by the inner housing is not sealed because the terminal member (conductor connector) and the power cable extend from the inner housing, but the energized portion housed inside the inner housing and the current-carrying portion. If the terminal and the work space of the outer housing can be separated from each other, it is possible to reduce the risk of electric shock caused by the operator coming into contact with the energized portion or the terminal. However, since a conductor connector that can be suitably used for such a double-structured housing is not known, an electrical accident due to a tracking phenomenon or the like when used for such a double-structured housing is not known. There has been a demand for a conductor connector that is unlikely to cause.

An object of the present invention is that it is used in a non-sealed closed space inside a housing, and even if it is not washed by rain or the like when dust accumulates, there is little risk of electric shock due to contact with an energized part or a terminal. Moreover, it is to provide a conductor connector in which an electric accident such as a tracking phenomenon or a ground fault is unlikely to occur.

Among the conductor connectors, the present inventors include an electrically insulating member that covers the periphery of the central conductor, which is composed of a first insulating member made of ethylene propylene rubber and a second insulating member made of silicone rubber. We have found that even when used in a non-sealed closed space inside a housing, the required insulation performance can be obtained and electrical accidents due to tracking phenomena are less likely to occur, and the present invention is completed based on such findings. It came to.

That is, the gist structure of the present invention is as follows.
(1) An insulation-coated conductor connector having a rod-shaped central conductor and an electrically insulating member that covers the periphery of the central conductor, and is connected to an energizing portion that energizes the central conductor and the energizing portion. The other end connection portion formed at the other end of the central conductor is housed in at least the unsealed closed space of the inner housing, the inner housing is housed in the outer housing, and the other end is accommodated at one end of the center conductor. In an insulating coated conductor connecting body in which one end connecting portion to be formed is projected outward from the inner housing and arranged in the working space of the outer housing, the electrically insulating member is made of ethylene propylene rubber and has a tubular shape. An insulating coated conductor connector composed of a first insulating member having a first inner peripheral surface thereof and a second insulating member made of silicone rubber and having a tubular second inner peripheral surface.
(2) The first insulating member is arranged so that the first inner peripheral surface is in close contact with the outer peripheral surface of the one end side portion of the central conductor, and the second insulating member has the second inner peripheral surface. , The other end of the first insulating member is arranged in close contact with the outer peripheral surface of the other end side portion of the central conductor, and is provided with an extension portion separated from the outer peripheral surface of the central conductor at one end side portion. The insulating coated conductor connector according to (1) above, wherein the outer peripheral surface on the side and the inner peripheral surface of the extending portion of the second insulating member are connected in close contact with each other.
(3) The connection between the outer peripheral surface of the other end of the first insulating member and the inner peripheral surface of the extending portion of the second insulating member is connected to the outer peripheral surface of the other end of the first insulating member. A first tapered surface formed so as to reduce the diameter toward the other end, and a second tapered surface formed on the inner peripheral surface of the extending portion of the second insulating member so as to increase the diameter toward one end. The insulating coated conductor connection according to the above (2), which is due to the tight fitting of the above.
(4) The outer periphery of the first insulating member which is inserted into the portion where the outer peripheral surface of the first insulating member and the extended portion of the second insulating member are connected and is not covered with the second insulating member. Further having an outer semi-conductive layer arranged so as to cover the surface, the outer semi-conductive layer is at least a part of the inner peripheral surface of the intervening portion facing the outer peripheral surface of the first insulating member. The insulating coated conductor connection according to any one of (1) to (3) above, wherein the shape of the conductor is a curved surface.
(5) The insulation-coated conductor connector has a plug-shaped or receptacle-shaped fitting connection portion on one end side portion, and is connected to a conductor portion on the other end side portion where the conductor of the current-carrying portion is partially exposed. The insulating coated conductor connector according to any one of (1) to (4) above, which has a terminal to be formed.
(6) Any one of (1) to (5) above, which is used for terminating, extending or branching the main line of the power cable according to the number of the insulating coated conductor connecting portion and the branch line connected to the energized portion. The insulation coated conductor connector according to the section.
(7) The insulation-coated conductor connector according to any one of (1) to (6) above, which is embedded in the first insulating member and further has a voltage detection terminal portion for detecting a current flowing through the central conductor. ..

According to the present invention, it is used in a non-sealed closed space inside a housing, and even if it is not washed by rain when dust accumulates, there is little risk of electric shock due to contact with an energized part or a terminal. Moreover, it is possible to provide a conductor connector in which an electrical accident such as a tracking phenomenon or a ground fault is unlikely to occur.

An example of the configuration of the insulating coated conductor connector according to the embodiment of the present invention is shown, in which (a) is a front view and (b) is a cross-sectional view. It is a figure which shows the state before assembling the 1st insulating member and the 2nd insulating member about the insulating coated conductor connection body which concerns on embodiment of this invention. It is a figure which shows the state when the electric power cable is connected using the insulation-coated conductor connector which concerns on embodiment of this invention. It is a perspective view which showed an example of the structure of the conductor connection body which concerns on the prior art.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiments, and various modifications can be made without changing the gist of the present invention.

<Insulation coated conductor connector>
The insulation-coated conductor connector of the present embodiment is an insulation-coated conductor connector having a rod-shaped center conductor and an electrically insulating member that covers the periphery of the center conductor, and is an energizing portion that energizes the center conductor and an energizing portion. The other end connecting portion connected to the energizing portion and formed at the other end of the central conductor is housed in at least a non-sealed closed space of the inner housing, and the inner housing is housed in the outer housing. At the same time, in an insulating coated conductor connecting body in which one end connecting portion formed at one end of the central conductor is projected outward from the inner housing and arranged in the working space of the outer housing, the electrically insulating member is used. It is composed of a first insulating member made of ethylene propylene rubber and having a tubular first inner peripheral surface, and a second insulating member made of silicone rubber and having a tubular second inner peripheral surface.

In the insulating coated conductor connector according to the present embodiment, the electrically insulating member that covers the periphery of the central conductor is composed of a first insulating member made of ethylene propylene rubber and a second insulating member made of silicone rubber. Since the advantages of both ethylene propylene rubber, which has excellent insulating properties, and silicone rubber, which has high water repellency and is resistant to dust adhesion, are utilized, it is possible to prevent tracking phenomena and ground faults in the insulating coated conductor connection. can. At the same time, the non-sealed closed space of the inner housing accommodates the energizing portion that energizes the central conductor and the insulating coated conductor connector that connects to the energizing portion at the other end connecting portion, and also accommodates the inner housing. It is housed in the outer housing, and one end of the insulation-coated conductor connector is projected outward from the inner housing and placed in the work space of the outer housing, so that the conductive wire can be installed or inspected. In addition, it is possible to reduce the possibility that the operator may get an electric shock by coming into contact with the energized portion or the terminal. Therefore, even if it is used in a non-sealed closed space inside the housing and is not washed due to rainfall when dust accumulates, it can reduce the risk of electric shock due to contact with the energized part or terminals, while reducing the tracking phenomenon. It is possible to make it difficult for electrical accidents such as ground faults to occur.

Hereinafter, embodiments of the insulating coated conductor connector of the present invention will be described in detail.

<Embodiment of Insulated Coated Conductor Connector>
1A and 1B are views showing an example of the configuration of the insulating coated conductor connector 1 according to the present embodiment, in which FIG. 1A is a front view and FIG. 1B is a vertical cross-sectional view. The insulating coated conductor connector 1 according to the present embodiment has a rod-shaped central conductor 6 and an electrical insulating member 2 that covers the periphery of the central conductor 6, and the electrical insulating member 2 is a first insulating member 3 and a second. It is composed of an insulating member 4.

(Center conductor)
The center conductor 6 is a rod-shaped conductor provided at the center of the insulating coated conductor connecting body 1, and is separably connected to one end T1 side of the insulating coated conductor connecting body 1, for example, a connection object such as an electric cable. A conductive member for electrically connecting (not shown) and a connection object (not shown) such as a current-carrying portion such as a bus bar, which is connected via a terminal mounted on the other end T2 side. be.

The material of the center conductor 6 is determined according to the energizing capacity required in the insulating coated conductor connection 1 and the amount of heat that can be generated in the insulating coated conductor connecting body 1, and obtains excellent conductivity and the amount of heat generated. From the viewpoint of restraint, it is preferably made of copper or aluminum.

A power cable is electrically connected to one end T1 side of the center conductor 6 via a fitting connection portion 61, and a terminal 7 is electrically connected to the other end T2 side of the center conductor 6. As a result, the power cable can be attached to and detached from the mating connection portion 61 without touching the terminal 7, so that the current-carrying portion located on the other end T2 side of the insulation-coated conductor connection body 1 can be directly touched by hand. You can reduce the chance of touching and make it less likely to get an electric shock.

(Electrical insulation member)
The electrically insulating member 2 is a member that covers the periphery of the central conductor 6, is made of ethylene propylene rubber (EP rubber), and is made of a first insulating member 3 having a tubular first inner peripheral surface 31 and silicone rubber. , It is composed of a second insulating member 4 having a tubular second inner peripheral surface 41. Here, although ethylene propylene rubber has excellent insulating properties, dew condensation occurs and the surface has moisture due to the high humidity internal environment, so that dust and dirt adhere to the surface, and aging. It has the property of accumulating dust and dirt adhering to the surface due to use. Therefore, ethylene propylene rubber is not suitable for use in a non-sealed closed space inside a housing in which the conductor connector is not washed by rainfall or the like. On the other hand, silicone rubber has a property of being less likely to cause a tracking phenomenon because it is less likely to be polluted by suspended matter in a high humidity or dew condensation environment even after aged use. However, when the entire electrical insulating member 2 is made of silicone rubber and is brought into contact with the fitting connection portions 86, 86'often made of ethylene propylene rubber, especially on the contact surface between the silicone rubber and ethylene propylene rubber. It was unclear whether the desired insulating property could be maintained. In this regard, in the present invention, as a constituent member of the electrically insulating member 2, a combination of a first insulating member made of ethylene propylene rubber and a second insulating member made of silicone rubber is more preferable, and dust and dirt are more preferably accumulated. At least the outer periphery of the generated electrical insulating member 2 is made of silicone rubber that is not easily contaminated by dust and dirt, and the portion of the electrical insulating member 2 adjacent to the outer peripheral surface of the central conductor 6 is made of ethylene propylene having excellent insulating properties. By using rubber, it is possible to obtain the desired insulation performance and to make it even more difficult for electrical accidents due to tracking phenomena to occur even after aged use.

The first inner peripheral surface 31 of the first insulating member 3 of the electrical insulating member 2 is arranged in close contact with the outer peripheral surface of a portion (one end) on the T1 side of the central conductor 6, and the second insulating member 4 The second inner peripheral surface 41 is preferably arranged in close contact with the outer peripheral surface of the other end T2 side portion of the central conductor. As a result, the first insulating member 3 made of ethylene propylene rubber having excellent insulating properties is arranged at one end T1 side of the electrical insulating member 2, so that when connecting or disconnecting the power cable at one end T1 side. , The possibility of electric shock of the operator can be further reduced. Further, since the second insulating member 4 made of silicone rubber, which is not easily contaminated by dust or dirt, is arranged on the other end T2 side of the electrical insulating member 2, the tracking phenomenon in the insulating coated conductor connector 1 is less likely to occur. be able to.

At this time, an extension portion 42 separated from the outer peripheral surface of the central conductor 6 is provided at one end T1 side of the second insulating member, and the other end T2 side portion (other end portion) of the first insulating member 3 is provided. It is preferable that the outer peripheral surface 32a and the inner peripheral surface 42a of the extending portion 42 of the second insulating member 4 are connected in close contact with each other. As a result, a gap is not formed between the outer peripheral surface 32a of the first insulating member 3 and the inner peripheral surface 42a of the second insulating member 4, so that between the first insulating member 3 and the second insulating member 4. It is possible to prevent the first insulating member 3 and the second insulating member 4 from being destroyed by the discharge phenomenon of the above, thereby making the insulating performance of the first insulating member 3 and the second insulating member 4 more stable.

Here, the connection between the outer peripheral surface of the other end of the first insulating member 3 and the inner peripheral surface 42a of the extending portion 42 of the second insulating member 4 is connected to the outer peripheral surface of the other end of the first insulating member 3. The first tapered surface formed by the outer peripheral surface 32a of the reduced diameter portion 32 and the extending portion 42 of the second insulating member 4 formed so as to reduce the diameter toward the other end T2, one end toward T1. It is preferable to use a close fit with the second tapered surface formed so as to increase the diameter. In this way, the first tapered surface formed by the outer peripheral surface 32a of the reduced diameter portion 32 of the first insulating member 3 and the second tapered surface of the extending portion 42 of the second insulating member 4 are tightly fitted. In the portion where the outer peripheral surface 32a of the first insulating member 3 and the inner peripheral surface 42a of the extending portion 42 are connected, the first one made of ethylene propylene rubber is inside the radial direction X (the side of the central conductor 6). The insulating member 3 is arranged, and the second insulating member 4 made of silicone rubber is arranged on the outside. Therefore, it is possible to prevent or reduce the contamination of the insulating coated conductor connector 1. Further, especially when used in a double-structured housing provided with an inner housing forming a non-sealed closed space, the tracking phenomenon is caused by exposing the second insulating member 4 made of silicone rubber inside the inner housing. Can be made less likely to occur.

As a means for connecting the outer peripheral surface of the first insulating member 3 and the inner peripheral surface 42a of the extending portion 42 of the second insulating member 4 in close contact with each other, for example, as shown in FIG. 2, the first insulating member 3 Is integrally molded on the outer peripheral surface of the central conductor 6, and the second insulating member 4 is molded separately from the first insulating member 3, so that the inner peripheral surface 42a of the extending portion 42 of the second insulating member 4 has an enlarged diameter. A means for fitting the portion to the outer peripheral surface 32a of the reduced diameter portion 32 of the first insulating member 3 can be mentioned.

At this time, at least a part of the inner diameter of the inner peripheral surface 42a where the diameter of the extending portion 42 of the second insulating member 4 is expanded is outside the portion where the reduced diameter portion 32 of the first insulating member 3 is fitted. It is preferable to mold them smaller than the diameter and fit them together. More specifically, as shown in FIG. 2, a convex portion 43 is provided on the inner wall at the tip of the portion of the inner peripheral surface 42a in which the extension portion 42 has an enlarged diameter, and the diameter-reduced portion of the first insulating member 3 is provided. The convex portion 43 is formed by providing the concave portion 33 in the portion of the 32 that fits with the convex portion 43 and forming the inner diameter r1 of the convex portion 43 to be smaller than the outer diameter r2 of the first insulating member 3. It may be locked in the recess 33. Further, the inner diameter of the inner peripheral surface 42a where the diameter of the extending portion 42 of the second insulating member 4 is expanded is formed to be smaller than the outer diameter of the reduced diameter portion 32 of the first insulating member 3 as a whole. As a result, the second insulating member 4 may be locked to the first insulating member 3. As a result, of the expanded diameter portion of the extending portion 42, the portion whose inner diameter is smaller than the outer diameter of the reduced diameter portion 32 expands and contracts to fit into the reduced diameter portion 32, so that the first insulation is difficult to join. The member 3 and the second insulating member 4 can be connected in close contact with each other.

On the other hand, the first insulating member 3 and the second insulating member 4 are used as means for connecting the outer peripheral surface of the first insulating member 3 and the inner peripheral surface 42a of the extending portion 42 of the second insulating member 4 in close contact with each other. A means for integrally molding and may be used. By using this means, it can be formed so that there is no void at the boundary between the first insulating member 3 and the second insulating member 4.

(External semi-conductive layer)
Of the outer circumference of one or both of the first insulating member 3 and the second insulating member 4 (in the insulating coated conductor connector 1 of FIG. 1, the outer circumference of the first insulating member 3), the portion not adjacent to the central conductor 6 is It is preferable that the outer semi-conductive layer 5 is laminated. More specifically, the outer semi-conductive layer 5 is inserted in a portion where the outer peripheral surface of the first insulating member 3 and the extending portion 42 of the second insulating member 4 are connected, and the second insulating member 4 It is preferable that the first insulating member 3 is arranged so as to cover the outer peripheral surface of the uncoated first insulating member 3. By arranging the external semi-conductive layer 5 in this way, the electric field generated during energization can be shielded by the external semi-conductive layer 5 in the same manner as the cable shielding layer, so that the electric field can be kept in a stable state. can. Further, as will be described later, when the power cable is fitted to the insulating coated conductor connecting body 1 via the fitting connecting portion 61, the outer semiconductive layer 5 of the insulating coated conductor connecting body 1 and the shield of the power cable are brought together. Since it can be configured to be conductive, the external semi-conductive layer 5 can be grounded and electrical safety can be ensured.

Here, as the material of the outer semi-conductive layer 5, conductive rubber in which an additive such as carbon is mixed with ethylene propylene rubber can be used.

The outer semi-conductive layer 5 is located on the other end T2 side of the intervening portion (that is, the portion where the outer peripheral surface of the first insulating member 3 and the extending portion 42 of the second insulating member 4 are connected. The shape of at least a part of the inner peripheral surface facing the outer peripheral surface of the first insulating member 3 at the end portion) is preferably a curved surface. More preferably, the outer semi-conductive layer 5 has a shape of an arc having a curvature R or a curved surface similar to the arc whose cross section along the longitudinal direction Y of the central conductor 6 at the end on the other end T2 side. As a result, among the electric fields generated when a current is passed through the central conductor 6, the electric field spreading from the curved end of the outer semiconductive layer 5 to the other end T2 side is dispersed and relaxed in the radial direction X. .. Therefore, it is possible to prevent dielectric breakdown of the first insulating member 3 and the second insulating member 4 due to the concentration of the electric field at the end of the external semi-conductive layer 5.

(Mating connection)
One end of the insulation-coated conductor connector 1 on the T1 side has a plug-shaped or receptacle-shaped fitting connection portion 61 configured to conduct conduction between the central conductor 6 and the conductor of a power cable (not shown). Is preferable. As a result, the power cable having a tip shape that fits with the fitting connection portion 61 can be attached to and detached from the fitting connection portion 61, and thus touches the other end T2 side of the insulating coated conductor connection body 1. It is possible to reduce the chances and reduce the possibility of electric shock caused by touching the terminal 7 or its vicinity.

Here, it is preferable that the fitting connection portion 61 is for conducting conduction between the central conductor 6 and the conductor of the power cable, and also for conducting conduction between the outer semiconductive layer 5 and the outer semiconductive layer of the power cable. .. As a result, the external semi-conductive layer 5 is grounded via a power cable or the like, so that electrical safety can be ensured.

(Terminal)
On the other hand, it is preferable to have a terminal 7 on the other end T2 side of the insulating coated conductor connector 1. As a result, the terminal 7 is placed on the other end T2 side of the insulation-coated conductor connector 1 on the conductor portion where the conductor of the energizing portion of the inner housing is partially exposed in the housing having the dual structure described later. Since it can be fixed and connected with a bolt or the like via the wire, the insulating coated conductor connecting body 1 can be more reliably and firmly fixed to the energized portion.

Here, the terminal 7 is not particularly limited, but for example, a tubular connecting portion 72 having a tubular internal space made of a conductor material, and an end conductor from the tubular connecting portion 72 in the direction opposite to the central conductor 6. Those with an extension of 71 can be used. Further, the end conductor 71 is formed with a connecting hole 73, and can be fixed to the energized portion with a bolt or the like.

The means for providing the terminal 7 on the insulating coated conductor connector 1 is not particularly limited. For example, the central conductor 6 is inserted into the internal space (sleeve portion) of the compression terminal, sandwiched by a compression tool, and strong pressure is applied from the surroundings. As a result, the terminal 7 and the center conductor 6 can be closely connected.

(Electroscope terminal)
It is preferable that the insulation-coated conductor connector 1 is provided so as to be embedded in the first insulating member 3 and has a voltage detection terminal portion 34 that detects a current flowing through the center conductor 6 by a voltage detection terminal. Here, the voltage detection terminal portion 34 is configured so as not to conduct with the central conductor 6 at a distance from the central conductor 6 so that a required induced voltage can be obtained. Further, the voltage detection terminal portion 34 may have a lid 35 configured to cover at least the voltage detection terminal. By providing such an electroscope terminal portion 34, it is possible to confirm whether or not electricity is flowing through the center conductor 6 without touching the center conductor 6, so that it is unlikely that an electric shock will occur due to touching the center conductor 6. can do. In particular, the voltage detection terminal portion 34 embedded in the first insulating member 3 is configured so as not to be electrically connected to the central conductor 6, and the voltage induced by the current flowing through the central conductor 6 is detected to detect the central conductor 6. Since it is possible to confirm whether or not electricity is flowing, it is possible to more safely confirm whether or not electricity is flowing.

(Kasabe)
Further, it is preferable that the outer peripheral surface of the second insulating member 4 of the insulating coated conductor connector 1 includes one or a plurality of cap portions 44a to 44c extending in the radial direction X of the central conductor 6. By having such cap portions 44a to 44c, a region where dust does not accumulate is generated on the back side of the cap portions 44a to 44c and the second insulating member 4 near the lower portion of the cap portions 44a to 44c. Therefore, it is possible to make the electrical path by the deposit in the longitudinal direction Y intermittent so that the tracking phenomenon is less likely to occur. Further, by increasing the surface distance from the terminals 7 and 7'on the other end T2 side of the insulating coated conductor connector 1 to the grounded portion, for example, the external semi-conductive layer 5, ground faults are less likely to occur. Can be done.

(Use of insulation-coated conductor connector)
The insulating coated conductor connecting bodies 1 and 1'according to the present embodiment are, for example, as shown in FIG. The other end connection portion illustrated by the terminals 7 and 7', which is connected to 82 and is formed at the other end T2 of the center conductors 6 and 6', is housed in at least the unsealed closed space of the inner housing 80. At the same time, it is used for a double-structured housing 8 configured by accommodating the inner housing 80 in the outer housing 81. Here, in the insulating coated conductor connecting bodies 1, 1', the one-sided connecting portions exemplified by the fitting connecting portions 61, 61'formed at one end T1 of the central conductors 6, 6'are formed from the inner housing 80. It is configured to project outward and be arranged in the work space of the outer housing 81 (the space inside the outer housing 81 and outside the inner housing 80). Generally, a housing having a non-sealed closed space has a structure in which dew condensation occurs inside the housing and dust can enter the inside of the housing. However, even if dust accumulates on the conductor connecting body, the conductor connecting body Is basically not washed by rainfall. On the other hand, in the present embodiment, the insulating coated conductor connecting bodies 1 and 1'are housed in the double-structured housing 8 including the inner housing 80 and the outer housing 81. Since the accumulation of dust on the portion of 1'covered by the inner housing 80 is further reduced, the tracking phenomenon in the insulating coated conductor connections 1 and 1'can be made less likely to occur. At the same time, the central conductors 6 and 6'that are energized between the energizing portion 82 and the energizing portion 82 are the inner housing 80, the first insulating member 3, 3', the second insulating member 4, 4', and the outer half. Since it is protected by the conductive layers 5 and 5', it is possible to reduce the possibility that the operator will come into contact with the conductive wire and receive an electric shock when constructing or inspecting the conductive wire.

The inner housing 80 is configured to cover at least the second insulating members 4, 4'and the terminals 7, 7'of the insulating coated conductor connectors 1, 1', the energizing portion 82, and the entire terminal 83. NS. Since the surface of these members includes conductors and members that may be charged, covering these members with the inner housing 80 reduces the possibility that the operator will come into contact with them and receive an electric shock. be able to. At this time, it is preferable that the insulating coated conductor connecting bodies 1, 1'are provided so that the first insulating members 3, 3'intersect with the wall surface of the inner housing 80. By providing the first insulating members 3 and 3'having excellent insulating properties in this way, the central conductors 6 and 6'and the inner housing 80 are electrically insulated, and the insulating coated conductor connector 1 and the inner housing 80 are electrically insulated. Since the outer semi-conductive layer 5 provided on the outer peripheral surface of 1'and the inner housing 80 have the same potential, electrical safety can be enhanced. In addition, the portion of the insulating coated conductor connectors 1 and 1'protruding into the work space outside the inner housing 80 has very little exposure of the central conductors 6 and 6'to the work space, and also. Since the residual charge can be easily discharged by grounding the insulating coated conductor connectors 1 and 1'via the inner housing 80 and the outer housing 81, the operator can easily discharge the residual charge when constructing or inspecting the conductive wire. It is possible to further reduce the possibility of electric shock due to contact with the electric charge.

The housing 8 in which the insulating coated conductor connectors 1 and 1'according to the present embodiment are used is used for terminating, extending, and branching the main line of the power cable.

For example, when terminating the main line of the power cable, the terminal 7 of the insulating coated conductor connecting body 1 is fixed to the energizing portion 82 in the inner housing 80 with a bolt or the like, and the insulating coated conductor connecting body 1 is fitted. A power cable 85 having a tip-shaped fitting connection portion 86 that fits with the connection portion 61 is fitted into the fitting connection portion 61. Here, one or more branch wires 84 may be fixed to the energized portion 82 with bolts or the like via the terminals 83. At this time, one or both of the power cable 85'and the terminal 7'are not connected to the energizing unit 82. As a result, the energizing unit 82 connected to the power cable 85 becomes the end of the power cable trunk line.

When extending the main line of the power cable, the terminal 7 of the insulating coated conductor connector 1 is fixed to the energized portion 82 in the inner housing 80 with a bolt or the like, and the terminal of the insulating coated conductor connector 1'is fixed. Fix 7'with bolts. Next, the power cables 85 and 85'having the tip-shaped fitting connection portions 86 and 86'that are fitted with the fitting connection portions 61 and 61'of the insulating coated conductor connecting bodies 1 and 1'are fitted, respectively. Fit to 61, 61'. In this case, the branch line 84 is not connected to the energizing unit 82. As a result, the power cable trunk line can be extended from the power cable 85 to the power cable 85'via the energizing unit 82.

When branching the main line of the power cable, the terminal 7 of the insulating coated conductor connector 1 is fixed to the energized portion 82 in the inner housing 80 with a bolt or the like, and the terminal of the insulating coated conductor connector 1'is fixed. Fix 7'with bolts. Further, the terminals 83 of one or more branch wires 84 are fixed to the energized portion 82 with bolts or the like. Next, the power cables 85 and 85'having the tip-shaped fitting connection portions 86 and 86'that are fitted with the fitting connection portions 61 and 61'of the insulating coated conductor connecting bodies 1 and 1'are fitted, respectively. Fit to 61, 61'. As a result, the current can be branched from the main power cables 85 and 85'to one or more branch lines 84.

As described above, the insulating coated conductor connecting bodies 1, 1'according to the present embodiment are powered according to the number of insulating coated conductor connecting bodies 1, 1'connected to the energized portion 82 and the number of branch lines 84. It can be used for termination, extension or branching of cable trunks.

Examples of the housing 8 include those used as a junction box, a distribution board, a distribution board, a switchboard, a transformer board, a power receiving equipment board, and the like, but the housing 8 is not limited thereto.

The insulation-coated conductor connector 1 according to the present embodiment is preferably used for supplying high-voltage power, more specifically, for supplying power to railway station buildings, railroad crossings, traffic lights, and the like. Not limited to. The insulating coated conductor connector 1 according to the present embodiment is particularly used in combination with a double-structured housing provided with an inner housing forming a non-sealed closed space, so that an electric shock may occur due to contact with an energized portion or a terminal. It can be preferably used for high-voltage power supply because it can prevent or reduce the danger of the electric power and the accumulation of dust while making it difficult for an electric accident such as a tracking phenomenon and a ground fault to occur.

1, 1'Insulation coated conductor connector 2 Electrical insulation member 3, 3'First insulation member 31 First inner peripheral surface 32 Reduced diameter part 32a Outer surface of reduced diameter part 33 Recessed 34 Electrostatic terminal 35 Lid 4, 4 'Second insulating member 41 Second inner peripheral surface 42 Extension part 42a Inner peripheral surface of extension part 43 Convex part 44a to 44c Caps 5, 5'External semi-conductive layer 6, 6'Center conductor 61, 61', 86, 86'Mating connection part 7, 7', 83, 93a to 93c, 94a to 94c terminal 71 End conductor 72 Cylindrical connection part 73 Connection hole 8 Housing 80 Inner housing 82, 95a to 95c Energizing part 84 Branch line 85, 85', 91a to 91c, 92a to 92c Power cable 96a to 96c, 97a to 97c Terminal member T1 One end T2 Other end X Radial direction Y Longitudinal direction r1 Inner diameter of convex part r2 Outer diameter of first insulating member

Claims (7)

An insulating coated conductor connector having a rod-shaped central conductor and an electrically insulating member that covers the periphery of the central conductor.
The energizing portion that energizes the central conductor and the other end connecting portion that is connected to the energizing portion and is formed at the other end of the central conductor are housed in at least an unsealed closed space of the inner housing, and
An insulating coating in which the inner housing is housed in the outer housing, and one end connecting portion formed at one end of the central conductor is projected outward from the inner housing and arranged in the work space of the outer housing. In the conductor connector
The electrical insulation member
A first insulating member made of ethylene propylene rubber and having a tubular first inner peripheral surface,
An insulation-coated conductor connector made of silicone rubber and composed of a second insulating member having a tubular second inner peripheral surface. The first insulating member is arranged so that the first inner peripheral surface is in close contact with the outer peripheral surface of the one end side portion of the central conductor.
The second insulating member is arranged so that the second inner peripheral surface is in close contact with the outer peripheral surface of the other end side portion of the central conductor, and is separated from the outer peripheral surface of the central conductor at one end side portion. Provide an extension
The insulating coated conductor connector according to claim 1, wherein the outer peripheral surface on the other end side of the first insulating member and the inner peripheral surface of the extending portion of the second insulating member are connected in close contact with each other. .. The connection between the outer peripheral surface of the other end of the first insulating member and the inner peripheral surface of the extending portion of the second insulating member is connected to the outer peripheral surface of the other end of the first insulating member at the other end. The first tapered surface formed so as to reduce the diameter toward one end and the second tapered surface formed so as to increase the diameter toward one end on the inner peripheral surface of the extending portion of the second insulating member are tightly fitted. The insulating coated conductor connector according to claim 2, which is the result of the combination. The outer peripheral surface of the first insulating member is inserted into a portion where the outer peripheral surface of the first insulating member and the extending portion of the second insulating member are connected to cover the outer peripheral surface of the first insulating member which is not covered with the second insulating member. It also has an external semi-conductive layer that is arranged to
The outer semi-conductive layer is any one of claims 1 to 3, wherein at least a part of the inner peripheral surface of the intervening portion facing the outer peripheral surface of the first insulating member is curved. Insulated coated conductor connector according to. The insulating coated conductor connector has a plug-shaped or receptacle-shaped fitting connection portion at one end side portion, and is connected to a conductor portion at the other end side portion where the conductor of the energizing portion is partially exposed. The insulating coated conductor connection according to any one of claims 1 to 4. The insulating coated conductor according to any one of claims 1 to 5, which is used for terminating, extending or branching a power cable trunk line according to the number of the insulating coated conductor connectors and branch lines connected to the energized portion. Connection body. The insulating coated conductor connector according to any one of claims 1 to 6, further comprising a voltage detection terminal portion embedded in the first insulating member and detecting a current flowing through the central conductor.

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