JP4795115B2 - Three-phase batch connection of different types of cables - Google Patents

Description

  The present invention relates to a three-phase collective connection portion for connecting a three-core OF cable and three single-core CV cables.

  When connecting an OF cable and a CV cable (cross-linked polyethylene insulated power cable), it is necessary to stop the oil so that the insulating oil in the OF cable does not flow into the CV cable. If the single-core OF cable and the single-core CV cable are connected, oil sealing can be performed relatively easily by sealing between the shielding electrode of the epoxy unit and the conductor connection pipe (see Patent Document 1). ).

JP 2001-352655 A

  However, when connecting a three-core OF cable with three cable cores in the jacket and three single-core CV cables, it is necessary to stop the oil outside the epoxy unit, so the structure is complicated. Therefore, there is a problem that the connecting portion is enlarged.

  In addition, since most of the conventional connecting parts are assembled at the construction site, it takes time and labor to assemble, and it is difficult to shorten the construction period.

  It is an object of the present invention to provide a three-phase collective connection portion for different types of cables that is structurally simple, can securely stop oil, can be reduced in size, and can be easily assembled at a construction site. It is in.

The heterogeneous cable three-phase collective connecting portion according to the present invention includes an oil retaining board having three holes, three epoxy units inserted into the holes of the oil retaining board, and an OF cable of the three epoxy units. A large-diameter protective tube that collectively accommodates the portion on the side, and three small-diameter protective tubes that accommodate the CV cable side portions of the three epoxy units one by one,
The epoxy unit has a flange portion on the outer periphery of the intermediate portion,
A fitting portion to which the flange portion is fitted is provided at an axially intermediate portion of the inner peripheral surface of each hole of the oil retaining plate, and an inner diameter smaller than the outer diameter of the flange portion is provided on the OF cable side. An annular ring edge is formed, and a female thread is formed on the CV cable side.
The large-diameter protective tube is liquid-tightly fixed to the oil retaining plate, and the small-diameter protective tube has a male screw ring portion that is screwed into the female screw portion of the oil retaining plate,
A gap between the outer peripheral surface of the flange portion and the fitting portion of the hole of the oil stop plate is sealed by a first O-ring disposed between the two, and the end surface on the OF cable side of the flange portion and the oil Between the inward annular projecting edge of the stop plate, the second O-ring arranged between the two is pressed by screwing the male screw ring portion of the small diameter protective tube into the female screw portion of the oil stop plate. Is sealed,
The OF cable side of the three epoxy unit is connected to three cable cores of the OF cables, the CV cable side is connected to three CV cable core of the cable,
The cable conductor of the OF cable and the cable conductor of the CV cable are respectively
A male terminal provided with a male fitting portion at the front end, an annular protrusion on the outer periphery of the intermediate portion, and a sleeve portion provided at the rear end;
A lock piece is incorporated in the cylinder body through which the male terminal is inserted so as to be movable in the radial direction, and a pressing member is provided to press the lock piece so that the inner end portion protrudes from the inner peripheral surface of the cylinder body. A retaining unit,
In the back of the housing portion for housing the retaining unit, an electrode in which the axial middle portion formed by providing a female fitting portion to which the male fitting portion of the male terminal is fitted is blocked by a partition wall,
Connecting the sleeve of the male terminal to the end of the cable conductor;
Fixing the retaining unit in the electrode;
The male fitting part of the male terminal is passed through the retaining unit and electrically connected to the female fitting part of the electrode, and the annular protruding edge of the male terminal is By passing the lock piece section of the retaining unit while pushing the lock piece away, the inner end of the lock piece is positioned on the rear end face side of the annular protruding edge by the pressing force of the pressing member to prevent the male terminal from being pulled out. Connected to the electrode with the connection structure
It is characterized by this.

  In the three-phase collective connection portion of the present invention, a third O-ring disposed between the end surface of the flange portion on the CV cable side and the male thread ring portion of the small diameter protective tube is connected to the oil stopper. It is preferable that the male screw ring portion of the small-diameter protective tube is screwed into the female screw portion of the panel and pressed to be sealed.

Further, the three-phase collective connecting portion of the present invention includes an oil retaining board having three holes, three epoxy units inserted into the holes of the oil retaining board, and the OF cable side of the three epoxy units. A large-diameter protective tube that collectively accommodates the above-mentioned portions, and three small-diameter protective tubes that accommodate the portions on the CV cable side of the three epoxy units one by one,
The epoxy unit has a flange portion on the outer periphery of the intermediate portion,
A fitting portion to which the flange portion is fitted is provided at an axially intermediate portion of the inner peripheral surface of each hole of the oil retaining plate, and an inner diameter smaller than the outer diameter of the flange portion is provided on the OF cable side. An annular ring edge is formed, and a female thread is formed on the CV cable side.
The large-diameter protective tube is liquid-tightly fixed to the oil retaining plate, and the small-diameter protective tube has a male screw ring portion that is screwed into the female screw portion of the oil retaining plate,
A gap between the outer peripheral surface of the flange portion and the fitting portion of the hole of the oil stop plate is sealed by a first O-ring disposed between the two, and the end surface on the OF cable side of the flange portion and the oil Between the inward annular projecting edge of the stop plate, the second O-ring arranged between the two is pressed by screwing the male screw ring portion of the small diameter protective tube into the female screw portion of the oil stop plate. Is sealed,
Three cable cores of the OF cable are connected to the OF cable side of the three epoxy units, and three cable cores of the CV cable are connected to the CV cable side,
The cable conductor of the OF cable and the cable conductor of the CV cable are respectively
A male terminal provided with a male fitting part at the front end, an annular protrusion on the outer periphery of the intermediate part, a sleeve part at the rear end, and a resilient contact ring attached to the outer periphery of the male fitting part When,
A plurality of lock pieces are incorporated into the cylindrical body through which the male terminal is inserted so as to be movable in the radial direction at a predetermined interval in the circumferential direction. A spring member for pressing so as to protrude from the inner peripheral surface of the cylindrical body, and a retaining unit formed by forming a male screw portion on the outer peripheral surface of the cylindrical body;
An axis formed by providing a female fitting portion into which the male fitting portion of the male terminal is fitted behind the housing concave portion for housing the retaining unit, and forming a female screw portion on the inner peripheral surface of the housing concave portion. And a shielding electrode whose direction middle part is blocked by a partition ,
Compression connecting the sleeve portion of the male terminal to the end of the cable conductor;
The retaining unit is fixed in the shielding electrode by screwing the male screw portion of the outer peripheral surface of the cylindrical body into the female screw portion of the inner peripheral surface of the shielding electrode,
By passing the male fitting portion of the male terminal through the retaining unit and fitting into the female fitting portion of the shielding electrode, the male fitting portion and the female fitting portion are elasticated. Electrically connecting through the contact ring, and passing the annular protruding edge of the male terminal through the lock piece section of the retaining unit while pushing the lock piece away, so that the inner end of the lock piece is pushed by the spring member. by positioning the rear end face of the annular flange at a pressure, the connection structure for preventing pull-out of the male terminals, that is connected to the shield electrode, good preferable.
Also in the case of this three-phase collective connection portion, a third O-ring arranged between the end surface on the CV cable side of the flange portion and the male thread ring portion of the small diameter protective tube is inserted into the oil stopper. It is preferable that the male screw ring portion of the small-diameter protective tube is screwed into the female screw portion of the panel and pressed to be sealed.

  According to the present invention, the large-diameter protective tube on the OF cable side is liquid-tightly fixed to the oil retaining plate, and the first O-tube is placed between the outer peripheral surface of the flange portion and the fitting portion of the hole of the oil retaining plate. A ring is arranged, a second O-ring is arranged between the end face of the flange portion on the OF cable side and the inward annular projecting edge of the oil retaining plate, and a male thread ring of a small diameter protective tube is provided on the female thread portion of the oil retaining plate. Since the seal is made by screwing the part, the oil stop can be surely performed and the radial dimension required for the oil stop outside the epoxy unit can be kept sufficiently small, so the connecting part is made small. Can be

  In addition, the oil stop panel with three holes, three epoxy units, large diameter protective pipe, and three small diameter protective pipes can be brought into the construction site in the assembled state at the factory. The end of the cable and CV cable should be processed and inserted into the epoxy unit, and the necessary waterproofing treatment should be applied. As a result, assembly work at the construction site is simplified, the construction period can be shortened, and the reliability of the connection part is increased. Can be improved.

  In addition, if a third O-ring is placed between the end face of the CV cable side of the flange and the male thread ring, even if the insulating oil leaks, it can be more reliably prevented from flowing into the CV cable side. can do.

  Moreover, if the conductor connection structure using the male terminal and the retaining unit is employed, the dimension in the axial direction of the connecting portion can be greatly shortened.

  1 to 3 show an embodiment of the present invention. In the figure, 11 is a metal oil retaining board having three holes 13, 15 is three epoxy units inserted through the holes 13 of the oil retaining board 11, and 17 is an OF cable 19 of three epoxy units 15. A large-diameter protective tube 21 that collectively accommodates the sides, and three small-diameter protective tubes 21 that accommodate the CV cable 23 side of the three epoxy units 15 one by one.

  The epoxy unit 15 has a shielding electrode 25 embedded therein, and a flange portion 27 protruding from the outer periphery of the intermediate portion. The shielding electrode 25 has an intermediate portion in the axial direction blocked by a partition so that the insulating oil of the OF cable 19 does not leak to the CV cable 23 side through the inside of the epoxy unit 15.

  In addition, a fitting portion 29 into which the flange portion 27 of the epoxy unit 15 is fitted is provided at an intermediate portion in the axial direction of the inner peripheral surface of each hole 13 of the oil stopper board 11, and the flange is provided on the OF cable 19 side. An inward annular projecting edge 31 having an inner diameter smaller than the outer diameter of the portion 27 is formed, and a female screw portion 33 is formed on the CV cable 23 side.

  One end of the large diameter protective tube 17 is fixed to the oil stopper 11 by welding or the like so that the insulating oil does not leak. The small-diameter protective tube 21 has a male screw ring portion 35 to be screwed into the female screw portion 33 of the oil retaining plate 11 at the end portion on the oil retaining plate 11 side.

  Further, a first O-ring 37 is disposed between the outer peripheral surface of the flange portion 27 of the epoxy unit 15 and the fitting portion 29 of the hole 13 of the oil stopper board 11, and the OF cable 19 side of the flange portion 27 is arranged. A second O-ring 39 is arranged between the end face and the inwardly-annular protruding edge 31 of the oil stopper disc 11, and a third O-ring 39 is provided between the end face of the flange portion 27 on the CV cable 23 side and the male screw ring 25. The O-ring 41 is arranged. The epoxy unit 15 is inserted into the hole 13 from the CV cable 23 side of the oil stopper board 11. When the flange portion 27 of the epoxy unit 15 is fitted into the fitting portion 29, the first O-ring 37 is pressed in the radial direction, and the gap between the fitting portion 29 of the oil stopper 11 and the flange portion 27 of the epoxy unit 15 is reached. Is sealed with a first O-ring 37. Thereafter, when the male threaded ring portion 35 of the small diameter protective tube 21 is screwed into the female threaded portion 33 of the oil retaining plate 11, the second and third O-rings 39 and 41 are pressed in the axial direction so as to face the flange portion 27 inwardly. The space between the annular projecting edges 31 and the space between the flange portion 27 and the male thread ring portion 35 are sealed. Thus, oil leakage on the outer peripheral side of the epoxy unit 15 can be prevented.

  The oil stop board 11, the three epoxy units 15, the large-diameter protective pipe 17, and the three small-diameter protective pipes 21 are carried into the construction site in a state assembled at the factory.

  At the construction site, the three cable cores 42 of the OF cable 19 are connected to the OF cable side of the three epoxy units 15 attached to the oil stopper board 11 as described above, and the three cable cores 42 are connected to the CV cable side. An operation of connecting the cable core 44 of the CV cable 23 is performed.

  The cable conductor 43 at the tip of the cable core 42 of the OF cable 19 is connected to the shield electrode 25 by a male terminal 45 and a retaining unit 47. Similarly, the cable conductor 49 at the tip of the cable core 44 of the CV cable 23 is connected to the shielding electrode 25 by the male terminal 45 and the retaining unit 47.

  4 to 6 show the connection structure of the cable conductor 49 of the CV cable 23, the connection structure of the cable conductor 43 of the OF cable 19 is the same. 4 to 6, 49 is a cable conductor, 51 is a cable insulator, 53 is a stress cone, and 45 is a male terminal attached to an end of the cable conductor 49. Further, 15 is an epoxy unit, 25 is a shield electrode integrally provided in the epoxy unit 15, and 47 is a retaining unit incorporated in the shield electrode 25.

  The male terminal 45 has a male fitting part 57, an intermediate body part 59, and a sleeve part 61 in order from the tip side. An annular groove is formed on the outer periphery of the male fitting portion 57, and an elastic contact ring 63 is attached to the annular groove. The elastic contact ring 63 is commercially available under a trade name such as a contact band. Further, an annular projecting edge 65 is formed on the front end side of the intermediate body portion 59.

  The retaining unit 47 has a cylindrical body 67 through which the male terminal 45 can be inserted. A plurality of radial through holes are formed in the cylindrical body 67 at predetermined intervals in the circumferential direction, and a lock piece 69 is incorporated in each through hole so as to be movable in the radial direction. As shown in FIG. 6, an annular groove 71 continuous in the circumferential direction is formed on the outer periphery of each lock piece 69 and cylinder 67, and an annular coil spring 73 is attached to the annular groove 71 in a tensioned state. Therefore, each lock piece 69 is always pressed inward by the annular coil spring 73, and the inner end portion protrudes from the inner peripheral surface of the cylindrical body 67.

  A stopper 75 is formed at the outer end portion of each lock piece 69 so that the inner end portion of the lock piece 69 does not protrude from the inner peripheral surface of the cylindrical body 67 beyond a certain limit. The thickness (diameter dimension) of the lock piece 69 is such that when the stopper 75 abuts against the outer peripheral surface of the cylindrical body 67 as shown in FIG. It is set to be the same as or slightly smaller than the outer diameter of the 45 intermediate body portion 59.

  The rear end side of the cylindrical body 67 is formed to have a slightly larger outer diameter than the circumscribed circle of the plurality of lock pieces 69, and a male screw portion 77 is formed on the outer peripheral surface of that portion. Furthermore, a notch 79 for hooking a tool for rotating the retaining unit 47 is formed at the rear end of the cylindrical body 67.

  The shield electrode 25 has a housing recess 81 that houses the retaining unit 47, and a female fitting portion into which the male fitting portion 57 of the male terminal 45 fits in the back of the housing recess 81. 83 is formed. A female screw portion 85 into which the male screw portion 77 of the retaining unit 47 is screwed is formed on the inner peripheral surface of the housing recess 81.

  In order to connect the cable conductor 49 to the shielding electrode 25, as shown in FIG. 5, first, the retaining unit 47 is inserted into the accommodating recess 81, and the male threaded portion 77 of the cylindrical body 67 is screwed into the female threaded portion 85 of the shielding electrode 25. . This screwing is performed until the front end surface of the cylindrical body 67 abuts against the back wall 87 of the housing recess 81. As a result, the retaining unit 47 is fixed coaxially within the shielding electrode 25. On the other hand, the sleeve portion 61 of the male terminal 45 is compression-connected to the end portion of the cable conductor 49. In addition, the operation | work which fixes the said retaining unit 47 in the shielding electrode 25 can also be performed in a factory, and can ship in the state which fixed both in this case.

  Thereafter, the male fitting portion 57 of the male terminal 45 is passed through the retaining unit 47 and fitted into the female fitting portion 83 of the shielding electrode 25. Thereby, the elastic contact ring 63 is compressed in the thickness direction, and the male fitting part 57 and the female fitting part 83 are electrically connected via the elastic contact ring 63. When the male fitting portion 57 is fitted to the female fitting portion 83, the annular protrusion 65 of the male terminal 45 locks the section of the lock piece 69 of the retaining unit 47 along the way. Since the passage passes while pushing away the piece 69, the inner end portion of the lock piece 69 is pushed on the intermediate body portion 59 of the male terminal by the pressing force of the annular coil spring 73 (the rear end face side of the annular projecting edge 65) as shown in FIG. ). In this state, when a pulling force is applied to the male terminal 45, the annular protruding edge 65 is hooked (engaged) with the lock piece 69, so that the male terminal 45 can be prevented from being pulled out.

  In particular, as shown in the drawing, when the rear end surface of the annular projecting edge 65 and the front end surface of the lock piece 69 are formed perpendicular to the axis, the male terminal 45 can be more reliably prevented from being pulled out. If the outer peripheral surface of the annular projecting edge 65 and the inner peripheral surface of the lock piece 69 are inclined surfaces (tapered surface or chamfered surface) as shown in the figure, the annular projecting edge 65 passes through the section of the lock piece 69. Sometimes, the lock piece 69 can be easily pushed away, and the male terminal 45 can be easily inserted.

  In addition, since the retaining unit 47 can be shipped in a state of being fixed in the shield electrode 25 at the factory, a special retaining process applied at the construction site is not necessary in this way, and the connection work at the construction site is a male terminal. 45 only needs to be passed through the retaining unit 47 and fitted into the female fitting portion 83 of the shielding electrode 25, and the connection workability at the construction site can be improved.

  The conductor connection is completed as described above. After that, when it is necessary to release the conductor connection, the stress cone 53 is retracted, and a tool is applied to the notch 79 at the rear end of the cylindrical body 67. The retaining unit 47 is rotated in the direction of loosening the screw, and the screw connection between the male screw portion 77 and the female screw portion 85 is released. Then, the male terminal 45 can be pulled out together with the retaining unit 47 without applying a large pulling force, and the connection can be easily released.

  Conventionally used tulip contacts can be used as the connection means of the cable conductor 49. However, when the connection structure using the male terminal 45 and the retaining unit 47 as described above is adopted, the connection portion There is an advantage that the dimension in the axial direction can be significantly shortened, the retaining action is reliable, and the connection can be easily released.

  After the cable conductor 49 is connected to the shielding electrode 25 as described above, the stress cone 53 is pressed against the epoxy unit 15 by the pressing force of the spring unit 89 as shown in FIG. The outer end protection tube 91 is connected to A waterproofing process (not shown) by tape winding or the like is performed between the outer end protection tube 91 and the jacket of the CV cable 23.

  On the other hand, the connection structure of the cable conductor 43 on the OF cable 19 side is the same as that on the CV cable 23 side. On the OF cable 19 side, an oil-impregnated paper winding layer 95 and a bell mouth 97 are provided on the outer periphery of the cable insulator 93, and an outer end protection tube 99 is connected to the outer end of the large diameter protection tube 17. The outer end of the outer end protection tube 99 is connected to a jacket (not shown) of the OF cable 19. The insides of the large-diameter protective tube 17 and the outer end protective tube 99 communicate with the inside of the OF cable 19 and are filled with insulating oil.

  FIG. 7 shows another embodiment of the present invention. In the above embodiment, as shown in FIG. 3, the oil stopper is sealed by the first to third O-rings 37, 39, and 41. However, in the embodiment of FIG. 7, the third O-ring is omitted. The oil stopper is sealed by the first and second O-rings 37 and 39. Even with such a structure, oil leakage from the boundary between the oil stopper 11 and the epoxy unit 15 can be reliably prevented.

The front view seen from the CV cable side of the oil stop board used for this invention. Sectional drawing which showed one Embodiment of the three-phase package connection part based on this invention using the oil stop board of FIG. 1 by the AA line of FIG. Sectional drawing which expands and shows the principal part of the connection part of FIG. Sectional drawing which shows preferable embodiment of the conductor connection structure in the connection part of FIG. Sectional drawing which shows the process of assembling the conductor connection structure of FIG. The retaining unit used for the conductor connection structure of FIG. 4 is shown, (A) is a longitudinal sectional view, and (B) is a transverse sectional view taken along line BB of (A). The expanded sectional view of the principal part which shows other embodiment of the heterogeneous cable three-phase collective connection part which concerns on this invention.

Explanation of symbols

11: Oil stopper 13: Hole 15: Epoxy unit 17: Large diameter protective tube 19: OF cable 21: Small diameter protective tube 23: CV cable 25: Shielding electrode 27: Flange portion 29: Fitting portion 31: Inward annular protrusion Edge 33: Female thread portion 35: Male thread ring portion 37: First O-ring 39: Second O-ring 41: Third O-ring 42: Cable core 43: Cable conductor 44: Cable core 45: Male terminal 47: Disconnected Stop unit 49: Cable conductor 51: Cable insulator 53: Stress cone 57: Male fitting portion 59: Intermediate body portion 61: Sleeve portion 63: Resilient contact ring 65: Annular protrusion 67: Cylindrical body 69: Lock piece 73: Annular coil spring 75: Stopper 77: Male thread part 83: Female mold fitting part 85: Female thread part 97: Bell mouth

Claims (3)

A heterogeneous cable three-phase collective connection part for connecting a three-core OF cable and three single-core CV cables,
An oil retaining plate (11) having three holes (13), three epoxy units (15) inserted through the holes (13) of the oil retaining plate (11), and the three epoxy units ( 15) a large diameter protective tube (17) that collectively accommodates the OF cable side portion, and three small diameter protective tubes that individually accommodate the CV cable side portions of the three epoxy units (15). (21)
The epoxy unit (15) has a flange portion (27) on the outer periphery of the intermediate portion,
A fitting portion (29) into which the flange portion (27) is fitted is provided in the axial direction intermediate portion of the inner peripheral surface of each hole (13) of the oil stop plate (11), and on the OF cable side. An inward annular projecting edge (31) having an inner diameter smaller than the outer diameter of the flange part (27) is formed, and a female thread part (33) is formed on the CV cable side,
The large-diameter protective tube (17) is liquid-tightly fixed to the oil retaining plate (11), and the small-diameter protective tube (21) is a male screw ring portion that is screwed into the female screw portion (33) of the oil retaining plate (11). (35)
A space between the outer peripheral surface of the flange portion (27) and the fitting portion (29) of the oil stop plate (11) is sealed by a first O-ring (37) disposed therebetween, Between the end surface of the flange portion (27) on the OF cable side and the inward annular protruding edge (31) of the oil stop plate (11), the second O-ring (39) disposed between the two is connected with the second O-ring (39). It is sealed by screwing the male thread ring part (35) of the small diameter protective tube (21) into the female thread part (33) of the oil retaining board (11) and pressing it,
The three cable cores (42) of the OF cable (19) are connected to the OF cable side of the three epoxy units (15), and the cable cores (3) of the three CV cables (23) are connected to the CV cable side. 44) it is connected,
The cable conductor (43) of the OF cable (19) and the cable conductor (49) of the CV cable (23) are respectively
A male terminal (45) having a male fitting portion (57) at the front end, an annular protrusion (65) at the outer periphery of the intermediate portion, and a sleeve portion (61) at the rear end;
A lock piece (69) is incorporated in the cylinder (67) through which the male terminal (45) is inserted so as to be movable in the radial direction, and the lock piece (69) is connected to the cylinder (67) at the inner end. A retaining unit (47) provided with a pressing member (73) for pressing so as to protrude from the inner peripheral surface;
A female fitting portion (83) into which the male fitting portion (57) of the male terminal (45) is fitted is provided at the back of the housing portion (81) that accommodates the retaining unit (47). An electrode (25) having an axially intermediate portion blocked by a partition;
Connecting the sleeve (61) of the male terminal (45) to the end of the cable conductor (43, 49);
Fixing the retaining unit (47) in the electrode (25);
By passing the male fitting part (57) of the male terminal (45) through the retaining unit (47) and fitting into the female fitting part (83) of the electrode (25), electricity is obtained. And the annular projecting edge (65) of the male terminal (45) is passed through the section of the lock piece (69) of the retaining unit (47) while pushing the lock piece (69) away. By connecting the inner end of the piece (69) to the rear end face side of the annular projecting edge (65) by the pressing force of the pressing member (73), the connection structure prevents the male terminal (45) from being pulled out. (3) A heterogeneous cable three-phase collective connection portion characterized by being connected to (25) . A heterogeneous cable three-phase collective connection part for connecting a three-core OF cable and three single-core CV cables,
An oil retaining plate (11) having three holes (13), three epoxy units (15) inserted through the holes (13) of the oil retaining plate (11), and the three epoxy units ( 15) a large diameter protective tube (17) that collectively accommodates the OF cable side portion, and three small diameter protective tubes that individually accommodate the CV cable side portions of the three epoxy units (15). (21)
The epoxy unit (15) has a flange portion (27) on the outer periphery of the intermediate portion,
A fitting portion (29) into which the flange portion (27) is fitted is provided in the axial direction intermediate portion of the inner peripheral surface of each hole (13) of the oil stop plate (11), and on the OF cable side. An inward annular projecting edge (31) having an inner diameter smaller than the outer diameter of the flange part (27) is formed, and a female thread part (33) is formed on the CV cable side,
The large-diameter protective tube (17) is liquid-tightly fixed to the oil retaining plate (11), and the small-diameter protective tube (21) is a male screw ring portion that is screwed into the female screw portion (33) of the oil retaining plate (11). (35)
A space between the outer peripheral surface of the flange portion (27) and the fitting portion (29) of the oil stop plate (11) is sealed by a first O-ring (37) disposed therebetween, Between the end surface of the flange portion (27) on the OF cable side and the inward annular protruding edge (31) of the oil stop plate (11), the second O-ring (39) disposed between the two is connected with the second O-ring (39). It is sealed by screwing the male thread ring part (35) of the small diameter protective tube (21) into the female thread part (33) of the oil retaining board (11) and pressing it,
The three cable cores (42) of the OF cable (19) are connected to the OF cable side of the three epoxy units (15), and the cable cores (3) of the three CV cables (23) are connected to the CV cable side. 44) is connected ,
The OF cable conductor of the cable (19) (43) and the CV cable conductors (49) of the cable (23), respectively,
A male fitting portion (57) is provided at the front end portion, an annular protrusion (65) is provided at the outer periphery of the intermediate portion, a sleeve portion (61) is provided at the rear end portion, and the outer periphery of the male fitting portion (57). A male terminal (45) having a resilient contact ring (63) attached thereto;
A plurality of lock pieces (69) are incorporated in the cylindrical body (67) through which the male terminal (45) is inserted so as to be movable in the radial direction at a predetermined interval in the circumferential direction. (69) is provided with a spring member (73) for pressing each inner end so as to protrude from the inner peripheral surface of the cylindrical body (67), and a male thread portion (73) is provided on the outer peripheral surface of the cylindrical body (67). 77) a retaining unit (47) formed;
A female fitting portion (83) into which the male fitting portion (57) of the male terminal (45) is fitted is provided at the back of the housing recess (81) for housing the retaining unit (47). A shielding electrode (25) in which an axial intermediate portion formed by forming an internal thread portion (85) on the inner peripheral surface of the housing recess (81) is blocked by a partition ;
The sleeve portion (61) of the male terminal (45) is compression-connected to the end portion of the cable conductor (43/49),
By screwing the male screw part (77) of the outer peripheral surface of the cylindrical body (67) into the female screw part (85) of the inner peripheral surface of the shield electrode (25), the retaining unit (47) is shielded electrode (25). Fixed inside,
By fitting the male fitting part (57) of the male terminal (45) through the retaining unit (47) and fitting it into the female fitting part (83) of the shielding electrode (25). The male fitting part (57) and the female fitting part (83) are electrically connected via the elastic contact ring (63), and the annular protrusion (65) of the male terminal (45). Is passed through the section of the lock piece (69) of the retaining unit (47) while pushing the lock piece (69) away, and the inner end of the lock piece (69) is annularly formed by the pressing force of the spring member (73). A heterogeneous cable three-phase package characterized in that it is connected to the shielding electrode (25) with a connection structure that prevents the male terminal (45) from being pulled out by being positioned on the rear end face side of the projecting edge (65). Connection part. Between the end surface of the flange portion (27) on the CV cable side and the male thread ring portion (35) of the small diameter protective tube (21), a third O-ring (41) disposed between them is provided. 3. The seal according to claim 1, wherein the male screw ring part (35) of the small-diameter protective tube (21) is screwed into the female screw part (33) of the oil retaining plate (11) and pressed to be sealed. Three-phase collective connection of different cables.

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