JP3380205B2 - Straight connection for cable - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] A straight-line connecting portion for a cable according to the present invention is an end of a cable such as a power cable for supplying electric power to various machinery such as a tunnel boring machine. Used to connect parts. 2. Description of the Related Art For example, at a tunnel construction site, power is supplied from a generator or the like installed outside the tunnel to a tunnel boring machine installed at a deep end (digging site) of the tunnel. In this case, the distance from the generator or the like to the tunnel boring machine reaches several tens of meters to several kilometers,
Moreover, it becomes longer gradually as the excavation work of the tunnel progresses. On the other hand, it is necessary to connect a cable that is long enough to continue power supply from the generator etc. to the tunnel boring machine until the excavation work is completed (until the tunnel penetrates) immediately after the start of tunnel excavation. Is not practical because it interferes with other tasks. Therefore, it is necessary to connect a large number of cables in series with each other as the excavation operation proceeds. This work is performed by separating the connection between the cable at the end and the cable attached to the tunnel boring machine, and connecting a new cable between these two cables. In order to minimize the downtime of the tunnel boring machine and to improve the efficiency of tunnel excavation work,
It is necessary to efficiently separate and connect the above cables. For this purpose, a straight connection portion for a cable as shown in FIG. 11 has been conventionally used. In the case of this conventional structure, the ends of a pair of cables 1 to be connected are
As shown in FIG. 12, cable-side connectors 2 and 2 having the same structure are connected, and both cable-side connectors 2 and 2 are connected to each other via an intermediate connector 3 as shown in FIG. The cable conductors 4 constituting the cables 1 and 1 are configured to be conductive. As shown in FIG. 12, a holding band 5 is externally fitted to the end of each of the cable side connectors 2 and 2, and the holding band 5 is fitted in a state where both cable side connectors 2 and 2 are fitted to the intermediate connector 3. By tightening the band 5, separation between the cable-side connectors 2 and 2 and the intermediate connector 3 is prevented. [0004] In the case of the conventional structure constructed as described above, a pair of cables 1, 1 cable conductor 4
Since the cable side connectors 2 and 2 are connected to both ends of the intermediate connector 3 in order to make them conductive, not only the number of parts increases but also the connection work must be performed for two places, which is troublesome. . Further, the holding force against the pulling force is not always sufficient. In other words, in the case of a power cable installed in a construction site such as in a tunnel, a force in the pulling direction may be applied for some reason. The structure must not come off. In the case of the retaining structure using the holding band 5 as in the conventional structure, when the above-described force in the pulling direction is applied, a large force is applied to the portion where the holding band 5 is externally fitted, and this portion may be broken. For example, there is a possibility that sufficient holding power cannot be obtained.
In view of such circumstances, the straight-line connecting portion for a cable according to the present invention has been invented in order to realize a structure that is light in weight, can easily perform an assembling operation, and can reliably prevent the cable from coming off. [0006] A straight line for a cable according to the present invention.
The connecting portion includes a pair of cables to be connected to each other, first and second conductor connectors, first and second insulating tubes, and a cover. The first conductor connector is connected and fixed to an end of a conductor constituting one of the pair of cables. The second conductor connector is freely connected to the first conductor connector, and is connected and fixed to an end of a conductor constituting the other cable of the pair of cables. Also, the first insulating cylinder is
It is provided so as to surround the end of the one cable and the periphery of the first conductor connector, and has a receiving hole inclined in a direction in which the inner diameter decreases toward the far end inside the first half thereof. The first conductor connector is located at the back end of the receiving hole. In addition, the second insulating cylinder is inclined such that the outer diameter becomes smaller as its front half portion approaches the front end, and the second conductor connector is exposed at the front end surface. Furthermore,
The cover is formed by stacking a pair of cover elements, each formed in a semi-cylindrical shape, and the first and second conductor connectors are connected to each other while the first insulating cylinder and the first Cover the periphery of the second insulating cylinder. [0008] In the case of the straight connecting portion for a cable according to the present invention, the portion of the first conductor connector near the tip end is prevented from coming off from the first conductor connector. The first conductor connector is rotatably supported with respect to the first conductor connector, and has a threaded cylinder formed with an external thread on the outer peripheral surface thereof, and the first conductor connector having an opening at the tip end surface of the second conductor connector. A connection concave hole into which a distal end portion can be inserted, a female screw formed on an inner peripheral surface of the opening of the connection concave hole, which can be screwed with a male screw on the outer peripheral surface of the screw cylinder; An engaging portion is provided between at least one of the cables and the cover for positioning the cable and the cover in the longitudinal direction. In the straight cable connecting portion of the present invention constructed as described above, the first half of the second insulating cylinder is inserted into the receiving hole provided inside the first half of the first insulating cylinder. As a result, the ends of the conductors constituting the pair of cables can be connected to each other via the first and second conductor connectors, and the connection portions can be insulated . In the case of the present invention , a male screw formed on the outer peripheral surface of the screw cylinder mounted on the first conductor connector side is screwed with a female screw formed on the second conductor connector side. As a result, the first and second conductor connectors can be connected to each other without separation. Further, by positioning the cable and the cover in the longitudinal direction by the engagement portion, the cover can surely keep the connection portion between the first and second conductor connectors. DETAILED DESCRIPTION OF THE INVENTION FIGS. 1-3, reference with respect to the present invention
It shows a first example of embodiment. Of the pair of cables 1a and 1b to be connected to each other, one end (the right end in FIG. 1 and the lower right in FIG. 2) of the cable 1a has a tip (left end in FIGS. The first conductor connector 6 made of a metal having good conductivity such as described above is provided. The connection between the cable 1a and the first conductor connector 6 is configured as shown in detail in FIG. That is, at the end of the conductor 7 constituting the cable 1a, at the portion protruding from the insulating film 8,
Base half of the first conductor connector 6 (right half of FIGS. 1 to 3)
The conductor 7 and the first conductor connector 6 are reliably conducted by externally fitting the connection cylinder 9 provided in the above, and further compressing the connection cylinder 9 radially inward. The first conductor connector 6 provided at the end of the one cable 1a and the shielding layer 10 exposed at the end of the cable 1a are provided between the first conductor connector 6 and the shield layer 10 exposed at the end of the cable 1a. The insulating layer 11a and the semiconductive layer 12a are provided in series with each other in order from the conductor connector 6 side. A screw cylinder 13 is fixed to the inner peripheral surface of the distal end portion (the left end portion in FIGS. 1 to 3) of the insulating layer 11a by molding or the like when the insulating layer 11a is injection-molded with a synthetic resin. The first conductor connector 6 is formed by screwing a male screw portion 42 formed on an outer peripheral surface of a flange portion 14 formed at a base end portion (right end portion in FIGS. After being connected to the insulating layer 11a, the connection cylinder 9 is compressed radially inward as described above. On the other hand, the base end (the right end in FIGS. 1 to 3) of the semiconductive layer 12 a is fitted to the end of the shielding layer 10 and is electrically connected to the shielding layer 10. At the end of the one cable 1a,
A first insulating tube 15 is provided so as to surround the first conductor connector 6. The first insulating cylinder 15 includes an inner semiconductive layer 16a, an insulating layer 17a, and an outer semiconductive layer 18a, each of which is made of an elastic material such as rubber. Of these, the inner semiconductive layer 16a is
The end of the first conductor connector 6 is covered from the end of the first conductor connector 6. Also, the insulating layer 17a covers the tip of the inner semiconductive layer 16a (left end in FIGS. 1 and 2) from the middle of the insulating layer 11a. In the first half (the left half of FIGS. 1 and 2) of the insulating layer 17a, a portion protruding from the leading edge of the internal semiconductive layer 16a is replaced with an insulating layer constituting a second insulating cylinder 19 described later. 17b (FIG. 1)
(2 right half) is formed as a holding cylinder portion 20 which can be inserted freely. The inner peripheral surface of the holding cylindrical portion 20 is an inner diameter side tapered surface 21 that is inclined in such a direction that the inner diameter increases toward the distal end. The angle of inclination of the inner diameter side tapered surface 21 matches the angle of inclination of the outer diameter side tapered surface 22 described later, and
The two tapered surfaces 21 and 22 are in tight contact with no gap in a state where the first half of the tapered surface is inserted into the holding cylinder portion 20. The first half of the first conductor connector 6 is
It protrudes into the holding cylinder 20. Further, the external semiconductive layer 18a covers the semiconductive layer 12a from the leading edge of the insulating layer 17a. Further, a portion protruding from a front end edge of the insulating layer 17a at a front end portion (left end portion in FIGS. 1 and 2) of the outer semiconductive layer 18a is connected to an outer diameter side cylindrical portion 23.
And Accordingly, the outer edge of the first insulating tube 15 is formed by the outer semiconductive layer 18a. And
On the outer peripheral surface portion of the outer diameter side cylindrical portion 23, a locking groove 24 for locking the holding band 5 is formed. Note that the waterproof tube 26 covers the semiconductive layer 12a from the base end (the right end in FIGS. 1 to 3) to the outer coating 25a of the one cable 1a. Instead of the waterproof tube 26, a tape may be wound to achieve waterproofing. On the other hand, of the pair of cables 1a and 1b to be connected to each other, the other end (the left end in FIG. 1, the upper left end in FIG. 2) is connected to the distal end (the right end in FIGS. 1 and 2) of the cable 1b. Has a second conductor connector 27 made of a metal having good conductivity such as copper or a copper alloy. The second conductor connector 27 is formed in a columnar shape as a whole, and is connected to the end of the conductor constituting the other cable 1b by the same structure as the first conductor connector 6 described above. ing.
A connection recess 28 is provided in the first half (the right half in FIGS. 1 and 2) of the second conductor connector 27.
7 is formed so as to be opened at the tip end surface. A well-known contact (not shown) made of a metal plate having good conductivity such as copper is provided on the inner peripheral surface of the connection hole 28. Further, when the outer peripheral surface of the other end of the cable 1b is extended from the outer peripheral surface of the second conductor connector 27 to the outer periphery of the other end,
It is covered by a second insulating cylinder 19. Each of the second insulating cylinders 19 is made of an elastic material such as rubber.
It comprises an inner semiconductive layer 16b, an insulating layer 17b, and an outer semiconductive layer 18b. The insulating layer 17b is covered from the outer peripheral surface of the distal end of the second conductor connector 27 to the intermediate portion of the insulating layer 11b fitted to the end of the other cable 1b. The first half of the insulating layer 17b (FIGS.
The outer peripheral surface of the right half of FIG. 2 is an outer-diameter-side tapered surface 22 that is inclined in such a direction that the outer diameter decreases toward the tip. The distal end surface of the second conductor connector 27 is exposed at the distal end surface of the insulating layer 17b. Therefore, the connecting recess 28 is opened at the distal end surface of the insulating layer 17b. ing. Further, the outer semiconductive layer 18b is covered from the intermediate portion of the insulating layer 17b by covering the semiconductive layer 12b externally fitted to the end of the other cable 1b. An inner cylindrical surface portion 29 is provided at a leading end portion (right half portion in FIGS. 1 and 2) of the outer semiconductive layer 18b at a portion continuous from the base end portion on the large diameter side of the outer diameter side tapered surface 22. This inner cylindrical surface 2
A step portion 30 is formed in a portion continuous from the step 9. Note that the waterproof tube 26 covers the semiconductive layer 12b from the base end (the left end in FIG. 1) to the outer coating 25b of the cable 1b. Further, as described above, one cable 1a
The first insulating tube 15 provided at the end of the second cable 1b and the second insulating tube 19 provided at the end of the other cable 1b as described above are covered with a cover 31 in a state where they are combined with each other. . The cover 31 has a pair of cover elements 32 formed by pressing a metal plate or by die-casting an aluminum alloy.
a and 32b are formed in a hollow cylindrical shape by being superposed in the middle. Inside the both ends of such a cover 31, cover side steps 33, 33 are provided, each having a large diameter at the center side of the cover 31 and a small diameter at the end side. On the other hand, the base end surfaces of the semiconductive layers 12a and 12b provided at the end portions of the cables 1a and 1b respectively have a small diameter at the center side and a large diameter at the end portions of the cables 1a and 1b. Cable side steps 34, 34. Then, the first and second insulating cylinders 15 and 19 are combined with each other, and the two insulating cylinders 15 and 19 are covered with the cover 31. The steps 34, 34 are engaged with each other to prevent the ends of the cables 1a, 1b from falling out of the cover 31. When connecting the two cables 1a and 1b to each other, the first half of the second insulating tube 19 is inserted into the holding tube 20 provided at the first half of the first insulating tube 15. Then, the holding cylinder 20 is inserted until the distal end surface contacts or approaches the step 30. At the time of this insertion work, the restraining band 5 is removed or sufficiently loosened. As a result of this insertion work, the outer cylindrical portion 23 is
At the same time, the tapered surfaces 21 and 22 on the inner diameter side and the outer diameter side closely contact each other without any gap at the same time when they are externally fitted by a slight interference fit. Also, the first half of the first conductor connector 6 enters the connection recess 28 provided in the first half of the second conductor connector 27 while elastically pushing and expanding the contact. I do. As a result, the pair of cables 1a and 1b conduct with each other via the first and second conductor connectors 6, 27 and the contacts. In this state, the holding band 5 is externally fitted to the distal end of the first insulating tube 15 and further tightened to hermetically seal the fitting portion between the first insulating tube 15 and the second insulating tube 19. In addition, the water-sealing property of the fitting portion between the insulating cylinders 15 and 19 is improved. Next, the pair of cover elements 32a and 32b are overlapped in the middle so as to cover the insulating cylinders 15 and 19, and joined to form the hollow cylindrical cover 31. The two cover elements 32a, 32b are connected to each other by screws 36, 36 inserted in through-holes 35, 35 provided at positions where peripheral parts of the cover elements 32a, 32b are aligned with each other, and a nut or cover element. This is done by screwing a screw hole directly formed in the hole and further tightening. In the state where the two cover elements 32a and 32b are connected to each other to form the cover 31, the cover side steps 33 and 33 and the cable side steps 34 and 33 are provided as described above.
34 can be reliably engaged with each other to prevent the ends of the cables 1a and 1b from coming out of the cover 31. A concave portion (not shown) for preventing interference with the screw portion 37 is provided on a portion of the inner surface of either of the cover elements 32a and 32b which is aligned with the screw portion 37 of the holding band 5. ). Also, both cables 1
When separating a and 1b from each other, the cover 31 is removed, the holding band 5 is loosened, and then the first and second insulating cylinders 15 and 19 are pulled with a strong force in a direction away from each other. , Can be easily separated. FIG. 4 shows a second embodiment of the present invention . In the case of this example, the outer semiconductive layers 18a, 18 constituting the first and second insulating tubes 15a, 19a
The cable side steps 34a, 34a are provided near the base end of b. And each of these cable side steps 34a,
34a and each cover element 32c constituting the cover 31a
Cover side steps 33a, 33a, which are the inner surfaces of the inward flange-shaped flanges formed at both ends of the cover.
In addition, through holes 35 for inserting screws for connecting the pair of cover elements 32c are formed in the respective cover elements 32c.
Is provided near the center. Further, the outer coating 2 of the other cable 1b provided with a second insulating cylinder 19a at its end.
5b and a semiconductive layer 12 provided at the end of the cable 1b.
b, an insulating film 38 formed by winding an insulating tape is provided. Incidentally, the insulating film 38 can also be formed by a shrink tube. Other basic configurations and operations are the same as those in the above-described first example. FIG. 5 shows a third embodiment of the present invention . In the case of this example, the second insulating cylinder 19
As the second conductor connector 27a provided in b, the one provided with the branch connection concave hole 39 is used. In accordance with this, a cutout portion 40 for passing the second insulating tube 19b is formed in a part of the cover element 32d that forms the cover 31b that houses the first and second insulating tubes 15a and 19b. ing. The branch connection recess 39 is covered with an insulating lid 41 when not in use. The basic configuration and operation other than the change accompanying the provision of the branch connection concave hole 39 are the same as those of the above-described second example. Next, FIGS. 6 to 10 show an embodiment of the present invention .
It shows an example of. In the case of this example, the first conductor connector 6a and the second conductor connector 27b are prevented from being separated from each other by a screwing structure instead of the cover 31c. That is, near the tip end portion of the first conductor connector 6a, wherein
The second screw cylinder 43, which is the screw cylinder described in the section , is supported rotatably and in a state where it is prevented from coming off from the first conductor connector 6a. For this reason, in the case of this example, the first conductor connector 6a is formed by screwing the compression terminal 44 and the connector body 45 together. The compression terminal 44 is pressed radially inward with the compression terminal 44 fitted to the end of the conductor 7 constituting one of the cables 1a, and is connected and fixed to the end of the conductor 7. . On the other hand, the connector body 45 is screwed and fixed to the distal end surface (the left end surface in FIGS. 6, 8, 9, and 10) of the compression terminal 44. Therefore, in the illustrated example, a male screw 46 is protruded from the center of the distal end surface of the compression terminal 44 and a screw hole 47 is formed in the base end surface of the connector main body 45 (the right end surface in FIGS. 6, 8, 9, and 10). The external thread 46 and the screw hole 47 are screwed and tightened. The connector body 45
An outward flange-shaped flange portion 48 is formed on the outer peripheral surface of the intermediate portion of the first embodiment. The second screw cylinder 43 is connected to the connector body 4.
5 is rotatably fitted to the base half portion, that is, the portion between the distal end surface of the compression terminal 44 and the flange portion 48. The base end of the compression terminal 44 is screwed to the screw cylinder 13 molded and fixed to the inner peripheral surface of the front end of the insulating layer 11a as in the case of the first example shown in FIGS. , This insulating layer 11
a. The first conductor connector 6a constructed as described above
On the other hand, the second conductor connector 27b connected and fixed to the end of the conductor forming the other cable 1b is substantially the same as the first example of the above-described reference example, including the connection structure for this conductor. is there. In particular, in the case of the present example, the second conductor connector 27b is formed so that the distal end of the connector body 45 constituting the first conductor connector 6a can be freely inserted.
A female screw 49 is formed on the inner peripheral surface of the opening of the connection concave hole 28a formed at the distal end of the second conductor connector 27b so as to open to the distal end surface of the second conductor connector 27b. The female screw 49 can be screwed with a male screw 50 formed on the outer peripheral surface of the second screw cylinder 43. A first insulating tube 15b and a sealing tube 52 are fitted to the end of the one cable 1a so as to be movable in the length direction of the cable 1a (left and right directions in FIGS. 6 to 10). are doing. The first insulating cylinder 15b is formed in a cylindrical shape as a whole, and is formed by laminating an inner semiconductive layer 16a, an insulating layer 17a, and an outer semiconductive layer 18a in order from the inner diameter side. The sealing cylinder 52 is formed in a cylindrical shape with a step by using rubber. A base end (the right end in FIGS. 6 to 10) is connected to the cable 1a, and a distal end (the left end in FIGS. 6 to 10). The first insulating tube 15b is externally fitted to the base end. Also, on the inner peripheral surfaces of both ends of the sealing cylinder 52,
A plurality of concave grooves 53 are formed.
Each of the concave grooves 53 is filled with grease, and the grease is used to water seal the both ends of the sealing tube 52 and the fitting portion between the cable 1a and the first insulating tube 15b. I have. A metal pipe 54 for grounding is fitted and supported on the inner peripheral surface of the intermediate portion of the sealing cylinder 52, and an engaging recess 55 is formed on the outer peripheral surface of the intermediate portion over the entire circumference. I have. In a state where the straight cable connecting portion of the present embodiment is assembled, the engaging concave portion 55 is loosely engaged with the engaging protrusion 56 projecting from the inner peripheral surface of the end of the cover 31c, and the cover 31c is moved in the longitudinal direction. To prevent it from moving. The operation of assembling the structure of the present embodiment as described above is performed as follows. At the start of the assembling operation, the first insulating tube 15b and the sealing tube 52 are retracted from the periphery of the first conductor connector 6a as shown in FIG. In this state, as shown in FIG. 9, the first half of the connector main body 45 constituting the first conductor connector 6a is opened at the tip end surface of the second conductor connector 27b. It is inserted into the connection recess 28a. Next, as shown in FIG. 10, the male screw 50 formed on the outer peripheral surface of the second screw cylinder 43 is screwed into the female screw 49 formed on the inner peripheral surface of the opening of the connection concave hole 28a, and further tightened. I do. This screw
By the tightening operation, the flange portion 48 formed on the outer peripheral surface of the intermediate portion of the connector main body 45 was formed on the distal end surface of the second screw cylinder 43 and the intermediate portion of the inner peripheral surface of the connection hole 28a. It is sandwiched between the step 57. In this state, the first and second conductor connectors 6a and 27b are non-separably coupled to each other. In this manner, the first and second conductor connectors 6
a and 27b are connected to each other, the first insulating tube 15b and the sealing tube 52 which have been retracted to the center of one of the cables 1a are replaced with the first conductor connector 6a.
Into the surrounding area. Then, as in the case of the first example described above, as shown in FIG. 6, the tip of the second insulating tube 19 provided at the end of the other cable 1b and the first insulating tube 1
5b is tightly fitted. Finally, as in the case of the first embodiment of the above-described reference example, as shown in FIG.
The pair of cover elements 32a and 32b are overlapped in the middle so as to cover the cover 19 and are joined to form the hollow cylindrical cover 31c. These two cover elements 32a, 32b
In a state where the cover 31c is formed by joining the first and second insulating cylinders 15 and 15, the engaging recess 55 and the engaging protrusion 56 engage with each other as described above.
b, 19 is prevented from shifting in the length direction. Therefore, protection of the first and second insulating cylinders 15b and 19 by the cover 31c is reliably achieved. The present invention is constructed and operated as described above, so that the connection work is easy, and the connection can be reliably prevented from being disconnected even when a force is applied in the pulling direction. By realizing the linear connection portion, it is possible to improve the efficiency of laying work of power distribution equipment for supplying electric power to various mechanical devices and the like and achieve stable power supply.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial cross-sectional view showing a first example of a reference example according to the present invention. FIG. 2 is a cross-sectional view showing the same unconnected state. FIG. 3 is a half sectional view showing a connecting portion between an end of one cable and a first conductor connector; FIG. 4 is a partial sectional view showing a second example of the reference example according to the present invention. FIG. 5 is a partial sectional view showing the third example. FIG. 6 is a half sectional view showing an example of the embodiment of the present invention with a cover omitted. FIG. 7 is a view showing a state in which a cover is assembled and a half of the cover is cut. FIG. 8 is a half sectional view showing a connection portion between an end of one cable and a first conductor connector, and an insulating tube and a sealing tube externally fitted to the one cable. FIG. 9 is a half sectional view showing a state where a first conductor connector connected to an end of one cable and a second conductor connector connected to an end of the other cable are abutted. FIG. 10 is a half sectional view showing a state in which a second screw cylinder for retaining is further screwed from the state shown in FIG. 9; FIG. 11 is a partial cross-sectional view showing one example of a conventional structure. FIG. 12 is a half sectional view showing a cable-side connector provided at an end of the cable. FIG. 13 is a partial cross-sectional view of the intermediate connector. DESCRIPTION OF THE SYMBOLS 1, 1a, 1b Cable 2 Cable side connector 3 Intermediate connector 4 Cable conductor 5 Suppression band 6, 6a First conductor connector 7 Conductor 8 Insulation coating 9 Connection cylinder 10 Blocking layer 11a, 11b Insulation layer 12a, 12b Semiconductive layer 13 Screw cylinder 14 Flange 15, 15a, 15b First insulating cylinder 16a, 16b Internal semiconductive layer 17a, 17b Insulating layer 18a, 18b External semiconductive layer 19, 19a, 19b Second insulation Cylinder 20 Holding cylinder portion 21 Inner diameter side taper surface 22 Outer diameter side taper surface 23 Outer diameter side cylindrical portion 24 Locking grooves 25a, 25b Outer coating 26 Waterproof tubes 27, 27a, 27b Second conductor connector 28, 28a For connection Concave hole 29 Inner cylindrical surface portion 30 Step portions 31, 31a, 31b, 31c Covers 32a, 32b, 32c, 32d Cover element 33, 33a Cover side step portion 34, 34a Cable side step 35 Through hole 36 Screw 37 Screw part 38 Insulating film 39 Branch connection concave hole 40 Notch 41 Insulating lid 42 Male screw part 43 Second screw cylinder 44 Compression terminal 45 Connector body 46 Male screw 47 Screw hole 48 Flange 49 Female screw 50 Male screw 52 Sealing cylinder 53 Concave groove 54 Grounding metal pipe 55 Engagement recess 56 Engagement projection 57 Step

Continuation of the front page (56) References JP-A-7-143652 (JP, A) JP-A-11-75319 (JP, A) JP-A-7-193964 (JP, A) JP-A-3-93421 (JP) JP-A-49-33189 (JP, A) JP-A-7-163041 (JP, A) JP-A-1-162730 (JP, U) JP-A-1-162731 (JP, U) JP-A 62-24487 (JP, U) Japanese Utility Model 2-1868 (JP, U) Japanese Utility Model Sho 49-13749 (JP, Y1) Japanese Utility Model Utility Model 49-6312 (JP, Y1) (58) Fields surveyed (Int. Cl. ⁷ , DB name) H02G 15/08 H02G 1/14

Claims (1)

(57) [Claims 1] A pair of cables whose ends are to be connected to each other, and a first conductor connected and fixed to an end of a conductor constituting one of the cables. A connector, a second conductor connector which is electrically connected to the first conductor connector, and is fixedly connected to an end of a conductor constituting the other cable of the pair of cables; and the one cable Is provided so as to surround the end of the first conductor connector and the periphery of the first conductor connector, and has a receiving hole which is inclined in a direction in which the inner diameter becomes smaller toward the far end inside the first half thereof. A first insulating cylinder in which the first conductor connector is located at the end, and the first half thereof is inclined in such a direction that the outer diameter becomes smaller toward the tip, and the second conductor connector is formed by A second insulating cylinder exposed at the distal end surface, and a pair of cover elements each formed in a semi-cylindrical shape A cover for covering the periphery of the first insulating cylinder and the second insulating cylinder in a state where the first and second conductor connectors are connected to each other, wherein the first conductor connection A screw cylinder having a male screw formed on the outer peripheral surface thereof, which is rotatably supported on the first conductor connector in a state where it is prevented from coming off from the first conductor connector, at a portion near the tip of the connector; An opening at the end face of the second conductor connector, a connection recess for freely inserting the tip of the first conductor connector, formed on the inner peripheral surface of the opening of the connection recess,
A female screw that can be screwed with a male screw on the outer peripheral surface of the screw cylinder, and a positioning between the cable and the cover, which is provided between at least one of the pair of cables and the cover, in the length direction. A straight-line connecting portion for a cable having an engaging portion for engaging.