JP3208031B2 - Power cable conductor connection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure for a cable conductor at an intermediate connection portion of a high-voltage power cable, and more particularly to a structure for simplifying the structure of a cable connection portion so that connection work can be performed quickly. Power that can improve the reliability and durability of the connection part by fixing and holding the conductor connector member at the end of the cable inserted into the reinforcing insulator with the high-voltage shield electrode using a locking means. The present invention relates to a cable conductor connection device.

[0002]

2. Description of the Related Art As an intermediate connection method of a power cable such as a CV cable, a method of inserting a cable conductor into a conductor connection pipe made of copper or aluminum, compressing the cable, and connecting the cable, and a method of connecting a conductor to the tip of the cable conductor A so-called slip-on type conductor connection method is used in which a conductor is fixedly arranged and a conductor connector is inserted into a conductor joint. Of the two connection methods, the compression connection method has an advantage that the electrical connection of the cable conductor is ensured and the outer shape of the connection portion is not increased, and is a connection method that has been used more frequently than ever before. However, when the compression connection method is used, in addition to the problem that the position is completely fixed after connection, especially in the case of a large-size cable, two cables from both sides of the conductor connection pipe are used. When the conductors are inserted facing each other, there is a problem that much labor is required for bending and positioning the cable.

[0003] On the other hand, in the slip-on type conductor connection method, the two cable ends can be treated independently, and finally, the conductor connector attached to the conductor end is used. Just insert and fit into the connection body,
The advantage that the connection portion can be easily formed can be exerted. However, since the slip-on type connection method is inferior in electric conductivity and tensile strength as compared with the compression type, the method for contacting the conductor and the fixing of the conductor connection portion including a locking mechanism for preventing pull-out are not provided. Many methods have been devised. As the connection part of the slip-on system, for example, JP-A-6-153371
In the publication, a connection method shown as a conventional example is used. In the connection method of the conventional example, a configuration as shown in FIG. 14 is used, and a copper conductor connector 3 is connected to the connection end of the conductor 2 of the two cables to be connected. It is fixed and provided. In the conductor connector 3, a large-diameter compression section is arranged on the cable side, an opening for inserting a cable conductor is provided at the center of the compression section, and the conductor 2 is inserted and compressed. To obtain conductivity.

At the tip of the conductor connector 3, an insertion head member 4 is provided so as to protrude. When the insertion head member 4 is inserted into the conductor joint 10, a locking step 6 of the head 5 is provided. Is locked to the locking step 12 of the conductor joint 10 so that the conductor connector is fixed to the conductor joint. In the conductor joint 10 into which the conductor connector is inserted, a number of narrow strip-shaped members 10a are arranged in a substantially annular shape, and ring-shaped springs 14 are arranged therearound and tightened from the outside. It is configured as follows. A recess 11 is provided on the inner surface of each of the conductor coupling members 10a formed in a substantially annular shape, and the insertion head member 4 of the conductor connector is accommodated in a large-diameter hollow portion formed by the recess 11. Like that.

The above-described conductor connector is integrally fixed to the other cable conductor to be connected, and the conductor connectors provided at the connection ends of the two cables are inserted into the conductor joint 10, respectively. Then, the connection portion can be formed. Then, by using the conductor connector connected to the conductor joint, electrical continuity between the two cables can be obtained, and the effect of fixing and holding is exhibited in accordance with the pulling force applied to the cable. be able to. The power cable connection device is also used for a terminal connection portion of a power cable. One conductor connector 3a is previously combined with a conductor joint 10 and the other conductor connector 3 is inserted later. To make the connection. After the cables are connected as described above, the periphery thereof is covered with an insulating member so as to be fixedly held.

[0006]

However, FIG.
As shown in the above, when a mechanism for inserting the conductor connectors 3 and 3a attached to the connection ends of the cables into the conductor joint 10 and locking the locking step portions of both members is used, There is a problem that play occurs at the connection. In the example shown in FIG. 14, the main body of the conductor connector 3 and the head 5
And a conductor joint 10 corresponding to the small diameter portion 7 formed between
The protrusion 13 at the insertion side end is positioned and fixedly held in a state in which the locking steps provided on both sides are engaged. However, in the case where the above-described locking means is used, the conductor joint 10 may be attached to the small diameter portion of the conductor connector.
It is necessary to set the length of the projection 13 excessively, and there is a problem that play is left in a portion where the conductor connector 3 is inserted into and fixed to the conductor joint 10.

When the conductor connector 3 is inserted into the conductor joint 10, the head 5, which is a large diameter portion of the insertion head member 4, pushes the projection 13 of the conductor joint 10. Then, the protrusion 13 is closed again with the protrusion 13 located at the small diameter portion of the conductor connector. Therefore, in the power cable connecting device, a large play is left at the combination position of the locking steps of each member. In the connection portion, only the portions locked by both locking steps bear the stress applied to the cable against the tension between the conductor connector and the conductor joint. Since the conductor connector and the conductor joint are made of copper, there is also a problem that the strength is relatively small with respect to the tensile force.

In order to solve the above-mentioned problem, for example, it is conceivable to construct a connecting portion as shown in FIG. In the conductor connection part shown in FIG. 15, the structure for fixing the conductor connector 50 to the connection end of the cable conductor is performed in the same manner as in FIG. The part is inserted into the opening of the conductor connector 50, and the compressed part is compressed and fixed. The conductor connector 50a is also attached to the facing cable conductor 2a. The conductor connector is formed as a copper member, and one end of the conductor connector is provided with a cable conductor 2.
The insertion end portions 51 and 51a for inserting the member into the conductor joint 10 at the other end are formed in a substantially cylindrical shape.

In the conductor joint 10 for inserting and holding the conductor connector from both sides, the inner surface is formed to have a smooth inner surface shape into which a cylindrical insertion tip is inserted. As described in the above, there is no mechanism provided for locking and holding by providing irregularities. Further, the conductor joint 10 is formed in a cylindrical shape by combining copper strip-shaped members in the same manner as in the case of the conventional connection portion, and a plurality of ring-shaped springs 14 are arranged around the cylindrical joint, The inserted insertion tip is tightened from the outside to fix and hold the conductor connector. And between the conductor joint and the conductor connector,
Only electrical continuity can be obtained,
The hearing provided to the cable is borne by a connecting member 25 described later.

[0010] The connecting members provided on the conductor connector include insertion-side connectors 53 and locking-side connectors 56 with respect to the concave holes 52, 52a formed in the insertion tips 51, 51a of the conductor connectors. Are screwed in, and the two members forming the connection member can be formed using a material having high strength such as iron. The head member 5 of the insertion-side connector 53 provided on the one conductor connector 50
4 is a locking connector 5 provided on the other conductor connector 50a.
6 was inserted into the conductor joint by inserting the pin member 55 provided at the distal end of the head member into the step 58 of the insertion hole 57 of the locking connector 56. The head of the conductor connector is connected.

In the connection member, the insertion-side connector 53 screwed into and fixed to one of the conductor connectors is configured as a substantially cylindrical member, and is provided with an outer thread on an outer peripheral portion thereof. A head member 54 is provided at the tip of the cylindrical main body so as to project through a tapered portion. A plurality of pin members 55 are radially arranged on the head member 54 of the insertion-side connector 53, and are urged in a direction in which the pin members 55 are protruded using an urging means such as a spring. Then, in the connection portion shown in FIG. 15, the insertion ends 51 and 51a of the two conductor connectors are inserted into the conductor joint, and the two connectors 53 and 56 are fixed to each other, so that the cable length is reduced. It becomes possible to counteract the pulling force in the vertical direction.

In the case where the cable connecting portion as described above is formed, even if the force in the pulling direction applied to the cable is very large, it can be handled by the locking means. Further, in the case where the cable connecting portion as shown in FIG. 15 is configured, it is possible to sufficiently exhibit advantages as a slip-on type connecting portion,
When the cable is connected, the cable main body is not largely bent, and the workability can be favorably exhibited. However, when the connecting means as described above is provided, the configuration of the insertion and locking side connectors 53 and 56 arranged at the tip of the conductor connector is complicated, and the number of components is increased. is there. Further, the connection means shown in the conventional example has a problem that the cost is increased because each component must be precisely processed, and the development of the connection means capable of reducing the cost with a simpler configuration. It is the present situation that is desired.

[0013]

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned problems in forming the conventional cable connection portion. In forming the cable connection portion, one end of one cable with respect to the reinforcing insulator is used. In the state where the cable is inserted, it is possible to insert the cable without bending the distal end of the other cable greatly, and to connect the conductor connector member disposed at the distal end of the cable conductor and the high-voltage disposed inside the reinforcing insulator. A power cable that constitutes a means for interconnecting with a shield electrode using fixing means to improve the reliability of the cable connection part and to easily perform the work of forming the cable connection part in a short time. It is an object to provide a conductor connection device.

[0014]

SUMMARY OF THE INVENTION According to the present invention, a conductor connecting means is disposed at a position facing a conductor end of a cable to be connected, and the electric connection is performed in such a state that the tips of the two conductor connecting means abut against each other. To form a conductor connection part that performs
The present invention relates to a cable connecting portion in which a reinforcing insulator is arranged corresponding to the conductor connecting portion, and members for insulation and protection are arranged on an outer peripheral portion thereof. According to a first aspect of the present invention, the conductor connector member for inserting the distal end portion of the cable conductor includes a cylindrical portion for inserting the conductor, and a flange portion provided with a screw portion at the distal end portion, A wedge member is inserted from the front end of the conductor through a screw portion provided on a flange portion of the connector member to fix the conductor in the cylindrical portion, and the two opposing conductor connector members are formed of a reinforcing insulator. Insert inside from both sides,
In a state where the tip portions of the conductor connector members are abutted with each other, electrical conduction is set via a high voltage shield electrode, and a conductive band member is provided between the conductor connector member and the high voltage shield electrode. A continuity setting means and a locking means for locking a top member provided on the high-voltage shield electrode to a recess provided in the conductor connector member are provided.

According to a second aspect of the present invention, there is provided a locking means for locking and fixing between a conductor connector member disposed at a distal end portion of the cable conductor and a high voltage shield electrode disposed inside a reinforcing insulator. The locking top member provided on the surface of the conductor connector member is locked with the concave portion provided on the high voltage shield electrode,
The position where the two conductor connector members are inserted into the high-voltage shield electrode is regulated by a regulation member provided at the center in the longitudinal direction of the high-voltage shield electrode. Claim 3
In the invention, the conductor connector member disposed at the tip end of the cable conductor and a locking means for locking and fixing between the high-voltage shield electrode disposed inside the reinforcing insulator are provided on the conductor connector member. It is characterized in that the locking is performed by locking a locking piece member provided on the surface of the high-voltage shield electrode with the provided recess.

[0016]

According to the power cable conductor connecting device of the present invention constructed as described above, the two cables to be connected are cut to a predetermined length at a position where the ends of the two cables are joined to expose the conductor of each cable. The distal end is inserted into the cylindrical conductor connector member, and the wedge member is pressed into the conductor and fixed. And when inserting the cable to which the conductor connector member is attached into the reinforcing insulator, for one of the cables, the reinforcing insulator can be moved and mounting work can be performed, and the other cable can be attached. The conductor connector member can be inserted inside the reinforcing insulator while performing a bending action corresponding to half the length of the reinforcing insulator. Further, in the reinforcing insulator of the present invention, the high-voltage shield electrode is arranged around the hole into which the conductor connector member is inserted, and the fixed holding means is provided between the high-voltage shield electrode and the conductor connector member. When the conductor connector member is inserted into the high-voltage shield electrode and reaches the predetermined position, the conductor connector member and the high-voltage shield electrode can be fixed via the fixing member. The member can cope with the stress applied in the length direction of the cable. Therefore, in the conductor connection portion of the present invention, the conductor connector member is attached to the distal end portion of the cable conductor, and the fixing member is disposed between the conductor connector member and the high voltage shield electrode. The two conductor connector members can be connected to each other. Furthermore, a conductive band member is arranged between the conductor connector member and the high-voltage shield electrode, and conduction between the two members can be set via the conductive band member. It is possible to set the continuity of the two cables via the high voltage shield electrode arranged inside.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a connecting device for a power cable conductor according to the present invention. In the example shown in FIG. 1, the configuration of a portion corresponding to the internal structure of the cable connection portion shown in FIG. 15 is shown, and the conductor connection portion 20 is provided inside the reinforcing insulator 40. , 1a
Conductor connector member 2 attached to the tip of conductor 2, 2a
1, 21a are connected to each other via a joint 25 in a state where they abut each other. The reinforcing insulator 40 is made of a rubber or plastic material and is formed as a cone-shaped member in the same manner as that conventionally used for a prefabricated connection portion. Are integrally coated, a cylindrical high-voltage shield electrode 41 is disposed inside, and a semi-conductor 42 made of a conductive plastic material is disposed on the outer surface of the high-voltage shield electrode 41. . When configuring the reinforcing insulator 40 in which the high-voltage shield electrode 41 and the semi-conductor 42 are disposed, a high-voltage shield electrode is disposed at the center of the shape corresponding to the cable connection portion, and the high-voltage shield electrode A conductive plastic material such as rubber mixed with carbon or the like is arranged on the outer surface at a predetermined thickness, and a rubber / plastic material forming a reinforcing insulator is formed by casting the inside of the mold. By covering the outer periphery of the reinforcing insulator with the semiconductive layer 43 and integrating the same, a reinforcing insulator can be formed. Further, in the conductor connection portion, a plurality of fixing members 30, 30a,... Are arranged between the inner surface of the high-voltage shield electrode and the outer surface of the conductor connector member, and the conductor connector member is moved with respect to the high-voltage shield electrode. And means for fixing and holding each of them.

When the conductor connecting portion 20 is formed inside the manhole, the ends of the cable to be connected are processed in accordance with the order shown in FIGS. 2 to 7, and the cable is inserted into the reinforcing insulator. Fix by doing. In the example shown in FIG. 2, the cables 1 and 1a drawn into the manhole from the sinus are aligned with the connection center J to correct the bending of the cables. Thereafter, as shown in FIG. 3, the two cables are cut with respect to the connection center J, and as shown in FIG. 4, the cable conductors 2, 2a are exposed by a predetermined length. Next, as shown in FIG. 5, the conductors 2 and 2a exposed as shown in FIG.
The conductor connector members 21 and 21a are respectively fixed, and preparation for insertion into the reinforcing insulator 40 is performed.

When a cable is connected to the reinforcing insulator 40, as shown in FIG. 6, the reinforcing insulator 40 is moved with respect to one of the cables, and the conductor connector member 21a is moved.
Is inserted and fixed inside the reinforcing insulator 40, and then the conductor connector member 21 of the other cable 1 is inserted into the reinforcing insulator. Further, when the conductor connector member 21 of the other cable is inserted after the tip end of one cable is inserted into the reinforcing insulator, the conductor connector member at the tip end of the cable 1 can be inserted into the reinforcing insulator. The bending operation is performed on the cable until the state is such that the distal end of the conductor connector member 21 is positioned at the distal end of the insertion hole of the reinforcing insulator 40, and then the bending of the cable is corrected. Then, the conductor connector member 21 is inserted into the inside of the reinforcing insulator. Then, the two cables 1, 1a are connected to the reinforcing insulator 40.
FIG. 7 shows the state of connection via the. Accordingly, the conductor connecting portion 20 as shown in FIG. 1 can be formed through the steps shown in FIGS.

In the conductor connecting portion 20 shown in FIG. 1, a conductor connecting member as shown in FIGS. 8 and 9 is formed, and conduction between the high-voltage shield electrode and the conductor connecting member is made. And fixing means. In the example of the configuration of the conductor connecting portion shown in FIG. 8, a wedge member is provided at the center of the conductor in a state where the conductors 2, 2a of the two cables 1, 1a to be connected are accommodated in the conductor connector members 21, 21a, respectively. 24, 24a are inserted to constitute a means for fixing the conductor and the conductor connector member. In the connection portion of the present invention, the conductor connector member fixed to the two cable conductors and the other constituent members are respectively configured to be symmetrical left and right. It will be mainly described. The conductor connector member 21 disposed at the distal end of the conductor 2 of the cable 1 has an opening provided with a screw portion 22 at a distal end side flange member 21B with respect to a cylindrical portion 21A into which the conductor 2 is inserted. Then, the middle member 23 is inserted from the opening provided in the flange member 21 </ b> B, and the wedge member 24 is pushed into the conductor 2.

The wedge member 24 is provided with a means for inserting into the opening provided in the flange member of the conductor connector member via the screw portion 22, and the wedge member 24 is provided at the distal end of the middle member 23 on the insertion side. May be provided integrally, or a means for pushing the wedge member 24 provided separately into the conductor by the middle member 23 can be used. Then, by pushing the wedge member 24 into the conductor 2 inserted into the cylindrical portion 21A of the conductor connector member 21, the conductor is expanded and pressed against the inner wall of the cylindrical portion of the conductor connector member. And the conductor connector member are fixed, and conduction between the two members can be set. The conductor connector member 21
A ring-shaped groove 46 is formed in the outer peripheral portion of the base member, and a conductive band member 47 is arranged in the ring-shaped groove 46 so that conduction between the high-voltage shield electrode 41 and the conductor connector member 21 is established. Is configured.

A conductive band member 47 is disposed in a ring-shaped groove 46 around the conductor connector member 21. As the conductive band member 47, a large number of cut-and-raised pieces are arranged at predetermined intervals with respect to a plate-like member such as copper, and the cut-and-raised pieces are projected obliquely. Place it,
The conductor connector member is cut and raised so that the end of the piece is pressed. Then, while the conductive band member 47 is held on the surface of the conductor connector member 21, by inserting the conductor connector member into the high-voltage shield electrode 41, the cut and raised pieces of the conductive band member 47 are formed. The conductor connector member 21 and the high-voltage shield electrode 41 are pressed against each other so that a conductive state between them can be set.

In the present invention, as the conductive band member, for example, "Multi Contact Band" (trade name) manufactured by Salton Co., Ltd. can be used. The "multi-contact band" is configured such that a thin belt-shaped plate member made of a copper alloy is cut and raised at a central portion to form pieces at predetermined intervals. Then, the cut-and-raised pieces are tilted to one side while being compressed by the pressing members on both sides, and are pressed against the members on both sides by the elasticity of the band, so that electrical conduction can be obtained. . In addition, as the conductive band member used for the connection portion of the present embodiment, any other conductive member can be applied, and the conductive band member is not limited to the “multi-contact band”.

In addition to arranging the conductive member having the above-described structure, the fixing member 30 is inserted into and fixed to the high-voltage shield electrode 41.
Means for fixing and holding by means of In the example of FIG. 8, the fixing member 30 is provided with a recess 31 near the insertion-side distal end of the conductor connector member 21, and corresponds to a position to be fixed to the recess 31 provided in the conductor connector member 21. ,
The locking top member 32 is disposed inside the high-voltage shield electrode 41. The locking piece member 32 is swingably provided via a support shaft 33, and is urged by a spring 34 so that the distal end of the locking piece member projects in the axial direction of the hole of the high-voltage shield electrode. are doing. Then, the conductor connector member 21 is inserted into the high-voltage shield electrode 41, and the leading end of the conductor connector member 21 is provided on a central ridge 45 (shown in FIG. 9) provided to protrude from the inner surface of the high-voltage shield electrode. In the locked state, the locking piece member 32 is engaged with the concave portion 31.

The high-voltage shield electrode 41 is arranged at the center of the through-hole of the reinforcing insulator, and is made of aluminum or another conductive material in a cylindrical shape. It is arranged in a predetermined thickness, and the outside thereof is configured to be covered with a reinforcing insulator body made of a rubber / plastic material. A central ridge 45 for regulating the insertion depth of the conductor connector member is disposed at the center of the high-voltage shield electrode 41 in the length direction so as to protrude in a ring shape on the inner surface of the hole at a predetermined height. Then, the depth at which the two conductor connector members are inserted from both sides of the reinforcing insulator can be regulated in a state where the distal end portion of the conductor connector member abuts against the central ridge 45. Further, the conductor connector members 21 and 21a inserted into the high-voltage shield electrode 41 from both sides of the through hole.
In contrast, the ends of the two conductor connector members are brought into abutment in a state in which the positioning is performed by the central protrusion 45.

As means for fixing and holding the two conductor connector members to each other, any connecting means other than those shown in the figure can be used. The positioned conductor connector member is
High-voltage shield electrode 41 via a plurality of fixing members 30.
By setting the conduction between the conductor connector member and the high-voltage shield electrode using the conductive band member 47, conduction between the two cable conductors can be achieved. In the conductor connecting portion shown in FIG. 8, the fixing members 30 are arranged in the vicinity of the central ridge 45, and when the conductor connecting member is inserted into the high-voltage shield electrode, At the last stage of the insertion, the locking top member 32 provided on the high-voltage shield electrode can be engaged with the concave portion 31 provided on the conductor connector member. For example, when the conductor connector member is made of a copper alloy or the like, the locking piece member 32 made of a hard metal such as iron or stainless steel may be used as the surface of the conductor connector member. This is because there is a concern that the surface of the conductor connector member may be damaged by contact with the conductor connector member. Therefore, when the locking piece is disposed on the high-voltage shield electrode, the surface of the conductor connector member is damaged by arranging the regulating member at the back of the conductor connector member in the insertion direction.
It is possible to prevent the electrical characteristics of the conductor connection portion from being affected.

In addition to the example of the connecting portion shown in FIG. 8, in the present invention, a mechanism of the connecting portion as shown in FIG. 9 can be used. In the example shown in FIG. 9, fixing members 30 arranged to fix the conductor connector member to the high-voltage shield electrode are arranged near the distal ends on both sides of the high-voltage shield electrode. A concave portion 31 is arranged on the inner surface of 41, and a locking piece 32 is arranged at the base of the conductor connector member 21. Then, the conductor connector members 21 from both sides with respect to the high-voltage shield electrode 41,
21a are inserted into the respective conductor connector members, and the distal end portions of the conductor connector members are pressed against the central protrusions 45, and the distal end portions of the two conductor connector members are provided on the conductor connector member in a state where they abut against each other via the joint 25. The locking top member engages with the concave portion provided in the high-voltage shield electrode, so that the conductor connector member can be positioned and fixed with respect to the high-voltage shield electrode. Therefore, as described above, when the locking piece member is arranged at the base of the conductor connector member, the locking piece member is inserted into the recess at the final stage of inserting the conductor connector member toward the high-voltage shield electrode. Since it is locked, the distance that the protruding end of the locking piece member rubs the inner surface of the high-voltage shield electrode can be shortened, and the inner surface of the high-voltage shield electrode can be less damaged. Become.

In the example of the conductor connector member shown in FIG. 9, similarly to the example of FIG. 8, the conductive band member 47 is formed in the ring-shaped groove 46 provided on the surface of the conductor connector member in a ring shape. To set conduction between the conductor connector member and the high voltage shield electrode, and to set conduction between the two conductor connector members via the high voltage shield electrode. Further, the conductor connector members 21 and 21a are fixed to the ends of the conductors 2 and 2a of the cables 1 and 1a via the wedge members 24 and 24a, respectively, in the same manner as in the case of FIG. Therefore, in the conductor connection portions shown in FIGS. 8 and 9, the high-voltage shield electrode 41 is provided integrally with the through hole of the reinforcing insulator, and the conductor connection portion is connected to the hole of the high-voltage shield electrode 41. Child member 21, 2
By inserting 1a from both sides, it becomes possible to easily connect two cables. Further, when configuring the conductor connection portion of the present invention, the width of the conductive band member disposed around the conductor connector member may be set wider according to the capacity of the transmission line, or the number of the conductive band members may be reduced. Can be adjusted.

When the conductor connector member 21 is inserted into the high-voltage shield electrode 41 in the conductor connection portion, the fixing operation by the fixing member 30 is performed as shown in FIGS. In the example shown in FIG. 10, the case where the concave portion 31 forming the fixing member 30 is disposed in the high voltage shield electrode and the locking piece member 32 is disposed in the concave portion 35 of the conductor connector member will be described. When the conductor connector member is inserted into the high-voltage shield electrode, the locking piece member 32 provided on the conductor connector member is urged clockwise in FIG. It is located at a position protruding from the recess 35. Further, as shown in FIG. 11, when the conductor connector member is inserted to a predetermined position with respect to the high-voltage shield electrode, the locking top member 32 is pressed against the inner surface of the high-voltage shield electrode and retracts into the recess 35. In addition, the operation of inserting the conductor connector member into the hole of the high-voltage shield electrode can be performed in a favorable state.
Then, the locking piece 32 slides along the hole of the high-voltage shield electrode and moves to the position of the concave portion 31.

When the conductor connector member is inserted into the high-voltage shield electrode and reaches a predetermined position, the concave portion 31 of the high-voltage shield electrode and the concave portion 35 of the conductor connector member coincide with each other. As shown, the locking top member 32
Is released, the locking top member 32 is released.
Project toward the recess 31 by the force of the spring 34. Then, the distal end surface 32a of the locking top member 32 is engaged with the step 31a of the recess 31 and the step 38 of the recess 35,
The fixing operation by the fixing member 30 is performed. In the state shown in FIG. 12, when the fixing action by the locking piece member 32 is performed, the support shaft 33 does not directly receive the pressing force against the locking piece member. The end 32c on the support shaft side is engaged with the step 36 of the recess 35. Therefore, when the conductor connector member is inserted into the high-voltage shield electrode and fixed via the fixing member 30, the force applied to the conductor connector member in the longitudinal direction of the cable is reduced by the high-voltage shield. Between the step 31a of the concave portion 31 provided on the electrode and the step 36 of the concave portion 35 of the conductor connector member, the compressing action is applied to the locking top member while pressing the locking top member 32. become.

Therefore, by forming the locking top member 32 from a relatively strong iron member or the like, the locking top member is not affected by a pulling force applied to the cable after the cable is connected. Can be sufficiently dealt with by converting as a compressing action for. In the configuration example of the fixing member shown in FIGS. 10 to 12, in the concave portion 35 that supports the locking top member 32 via the support shaft 33, the bottom portion 37 of the concave portion is located below the locking top member. An arbitrary inclined portion can be formed according to the shape of the tapered surface 32b. Then, as shown in FIG. 11, when the locking piece 32 slides along the inner surface of the hole of the high-voltage shield electrode, the entire locking piece 32 is
So that the upper surface of the locking top member does not generate an extra rubbing action against the movement of the conductor connector member.

In addition to the structure of the fixing member, the joining portion 25 is formed in a state where the tip portions of the two conductor connector members abut against each other, and when a force for rotating the cable is applied. In order to prevent the rotation, a connection structure as shown in FIG. 13 can be provided. In the example shown in FIG. 13, the tip of one conductor connector member 21 has a convex tooth 2
6 are provided, and a concave tooth portion 27 is arranged at the tip of the other conductor connector member 21a. Then, two conductor connector members are inserted from both sides of the high-voltage shield electrode, and the ends of the conductor connector members 21 and 21a are abutted with each other.
The convex tooth portion 26 is inserted into the concave tooth portion 27, and the teeth of both members are brought into a state of meshing with each other. The teeth provided on the convex tooth portion and the concave tooth portion can be formed as ordinary bevel gears, and the rotational force applied to one conductor connector member in a state where the teeth of both members mesh with each other. Is prevented by the other conductor connector member, so that it is not necessary to precisely set the shape of the gear. Further, when the joint portion is formed by combining the convex tooth portion 26 and the concave tooth portion 27 as shown in FIG. 13, if the number of teeth arranged on both members is large, when connecting the cable, It is not necessary to rotate the entire body excessively, and the connection operation can be easily performed.

[0033]

Since the power cable conductor connecting device of the present invention is constructed as described above, the power cable conductor connecting device is cut to a predetermined length at a position where the ends of the two cables to be connected abut each other. The means for fixing the conductor by exposing the conductor of each cable to the cylindrical conductor connector member and inserting the wedge member into the conductor can be configured. Connection can be made easily. And when inserting the cable to which the conductor connector member is attached into the reinforcing insulator, for one of the cables, the reinforcing insulator can be moved and mounting work can be performed, and the other cable can be attached. The conductor connector member can be inserted inside the reinforcing insulator while performing a bending action corresponding to half the length of the reinforcing insulator.

Further, in the reinforcing insulator of the present invention, a high-voltage shield electrode is arranged around the hole into which the conductor connector member is inserted, and fixed holding means is provided between the high-voltage shield electrode and the conductor connector member. Since the conductor connector member is inserted into the high voltage shield electrode and reaches the predetermined position, the conductor connector member and the high voltage shield electrode can be fixed via the fixing member. In addition, it is possible to cope with the stress applied in the length direction of the cable by the fixing member. Therefore, in the conductor connection portion of the present invention, the conductor connector member is attached to the distal end portion of the cable conductor, and the fixing member is disposed between the conductor connector member and the high voltage shield electrode. The two conductor connector members can be connected to each other. Further, a conductive band member is disposed between the conductor connector member and the high-voltage shield electrode, and conduction between the two members can be set via the conductive band member. It is possible to set the continuity of the two cables via the high-voltage shield electrode disposed in the first cable.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a configuration of a conductor connecting portion of the present invention.

FIG. 2 is an explanatory diagram of a stage of positioning a cable when connecting the cable.

FIG. 3 is an explanatory diagram of a state in which a cable is cut corresponding to a connection portion.

FIG. 4 is an explanatory diagram of processing of a cable tip.

FIG. 5 is an explanatory view showing a state where a conductor connector member is attached to a conductor and a reinforcing insulator is attached.

FIG. 6 is an explanatory diagram of a state where the other conductor connector member is inserted into a reinforcing insulator.

FIG. 7 is an explanatory diagram of a state in which two cable end portions are fixed via a reinforcing insulator.

FIG. 8 is an explanatory diagram showing a configuration of a conductor connecting portion of the present invention.

FIG. 9 is an explanatory view of another embodiment showing the configuration of the conductor connection portion of the present invention.

FIG. 10 is an explanatory view showing a relationship between a concave portion and a locking top member constituting the fixing member of the present invention.

FIG. 11 is an explanatory view of a state in which a locking top member is slid into a hole of a high-voltage shield electrode.

FIG. 12 is an explanatory view of a state in which it is engaged with and fixed to a concave portion corresponding to a locking top member.

FIG. 13 is an explanatory view showing the configuration of teeth formed at the distal ends of two conductor connector members.

FIG. 14 is an explanatory diagram showing a configuration of a conventional slip-on type connection portion.

FIG. 15 is an explanatory diagram showing a configuration of another example of a conventional slip-on type connection portion.

[Explanation of symbols]

1 cable, 2 conductor, 10 conductor joint,
20 conductor connection part, 21 conductor connection member, 2
3 middle member, 24 wedge member, 25 joint,
26 convex tooth part, 27 concave tooth part, 30 fixing member, 31 concave part, 32 locking top member, 40
Reinforced insulator, 41 High voltage shield electrode, 45
Central ridge, 46 ring-shaped groove, 47 conductive band member, 50 conductor connector, 53 insertion side connector,
56 Locking connector.

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomoyo Ueda 1008 Shinbori, Kumagaya-shi, Saitama Mitsubishi Cable Industry Co., Ltd. Kumagaya Works (58) Field surveyed (Int. Cl. ⁷ , DB name) H02G 15 / 08 H01R 4/50

Claims (3)

(57) [Claims] 1. A conductor connecting portion for electrically connecting a conductor connecting portion to a conductor end portion of a cable to be connected, the conductor connecting portion being arranged at a position facing the conductor end portion, and the tip portions of the two conductor connecting portions abutting each other. A reinforcing member is disposed in correspondence with the conductor connection portion, and a member for insulation and protection is disposed on an outer peripheral portion thereof. In the connector member,
A cylindrical portion into which a conductor is inserted, and a flange portion provided with a screw portion at the distal end portion are provided, and a wedge member is inserted from the conductor distal end side through a screw portion provided at the flange portion of the conductor connector member. Then, a conductor is fixed in the cylindrical portion, the two opposing conductor connector members are inserted into the inside of the reinforcing insulator from both sides, and the high-voltage shield electrode is placed in a state where the tip portions of the conductor connector members abut each other. Along with setting the electrical continuity through, a continuity setting means via a conductive band member between the conductor connector member and the high voltage shield electrode, and a recess provided in the conductor connector member, And a locking means for locking a top member provided on the high-voltage shield electrode. 2. A high voltage shield electrode comprising: a conductor connecting member disposed at a distal end portion of the cable conductor; and a high voltage shield electrode disposed between the conductor connector member and a high voltage shield electrode disposed inside a reinforcing insulator. The locking piece provided on the surface of the conductor connector member is locked to the provided recess, and the position where the two conductor connector members are inserted into the high voltage shield electrode is set at the center in the length direction of the high voltage shield electrode. The power cable conductor connection device according to claim 1, wherein the connection is regulated by a regulation member provided in the portion. 3. A conductor connector member for securing and fixing between a conductor connector member disposed at a distal end portion of the cable conductor and a high voltage shield electrode disposed inside a reinforcing insulator. The power cable conductor connection device according to claim 1, wherein the connection is performed by locking a locking piece member provided on the surface of the high-voltage shield electrode to the concave portion provided in the power cable conductor.