JP3423609B2 - Y branch connection of CV cable - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention
The Y-branch connection of the CV cable used as an underground transmission line
Improved prefabricated connection to connect the ends of the bull
About. [0002] The end of a CV cable constituting an underground power transmission line
In order to connect the parts to each other,
Hub-type connections have been proposed. The program shown in FIG.
The rehab-type connection section connects one CV cable 1 to two CV cables.
Cables 1, 1 (or conversely, two CV cables 1,
1 to one CV cable 1), Y joint
Shows the structure of the Y-branch connection of the CV cable
ing. First, the Y of the CV cable shown in FIG.
The structure of the branch connection will be described. The case 2 includes a main body 3, a first end plate 4,
CV cables, each of which is a CV cable to be connected
1, 3 insulating cylinders 5, 5 and 2
End plates 6 and 6. The main body 3 is made of metal
And one end of the main body 3 (the left end in FIG. 10).
End) A metal, ring-shaped first end plate 4 is screwed into the opening.
It is fixed. And the central part of this first end plate 4
And the other end of the main body 3 (the right end in FIG. 10).
For inserting the connection ends of the CV cables 1 and 1, respectively,
Three circular openings 7, 7 are provided. Epo each
Each of the above, formed in a short cylindrical shape with an insulating material such as
Insulating cylinders 5 and 5 are located around the openings 7 and 7 respectively.
It is fixed with screws. Further, each of the second end plates 6,
6 is an outer edge of each of the insulating cylinders 5, 5 (the right edge in FIG. 10).
Section). [0004] Inside the case 2 constructed as described above,
An insulating molded article 8 made of an insulating material such as an epoxy resin is retained.
It is held and fixed. That is, the end of the insulating molded product 8 is
The second end plates 6, 6 are screwed to the inner surface near the inner periphery.
As a result, the insulating molded article 8 is fixed in the case 2.
ing. Such an insulating molded article 8 has good conductivity such as copper.
The conductor connector 9 made of a good metal is embedded and supported.
You. This conductor connector 9 has connection recesses 10, 10
3 in accordance with the number of CV cables 1 and 1 to be connected
However, they are provided so as to face the openings 7 and 7 respectively.
You. In the illustrated example, each of the connection recesses 10 and 10 is
With a tapered hole whose inner diameter becomes smaller from the
are doing. [0005] Each of the above CV cables 1 and 1
The periphery of the body 11 is covered with an insulating layer 12, and
In this case, from the end of the insulating layer 12 to the end of the conductor 11
The part is projected. Around the insulating layer 12 is a seal.
Shielded wire 13
The enclosure is covered by a surface coating 14 made of insulating material. Also this
Of the shield wire 13 are studs 15, 15 and
It is grounded via the second end plates 6,6. The conductor 11 of each of the CV cables 1 and 1
Is connected to a connection sleeve 16 as shown in FIGS.
It is connected to the conductor connector 9 via the above. Conductive such as copper
This connection sleeve 16 made of a good metal
Is the first half (the first half in the insertion direction into the connection recess 10).
The outer peripheral surface of the left half of FIG.
The inclined surface is inclined in the same direction as the inner peripheral surface.
A receiving-side inclined surface 17 having a smaller outer diameter toward the edge is formed.
ing. In addition, the connection sleeve 16 has front and rear end edges.
A plurality of slits 18 are formed to open,
It is elastically contractible. Such a connection sleeve 1
Reference numeral 6 denotes a state in which the conductor
Inserted into each of the connection recesses 10 together with the tip of the body 11
are doing. The opening ends of these connection recesses 10
Pressing and fixing three as shown in FIGS.
The connecting sleeve 16 connects the inner and outer peripheral surfaces of the connecting sleeve 16 to each other.
The outer peripheral surface of the end of the body 11 and the inner peripheral surface of the concave portion 10 for connection.
Are close together. Pressing and fixing sleeve 19
Is formed on the inner peripheral surface of the opening end of the connection recess 10 on the outer peripheral surface.
Connect the male screw to be screwed with the formed female screw to the tip surface (left in FIG. 13).
Push-side inclined surface 2 engaging with the receiving-side inclined surface 17 on the end surface)
0 is formed respectively. Such a press-fixed three
Screw 19 into the opening end of each connection recess 10,
If further tightening, this press-fixing sleeve 19
Press the sleeve 16 toward the inside of each of the connection recesses 10
I do. The outer peripheral surface of the first half of the connection sleeve 16 and the above
Engagement of the connection concave portion 10 with the inner peripheral surface and inclination of the receiving side
Based on the engagement between the surface 17 and the push-side inclined surface 20, the connection
The sleeve 16 is provided with the connecting recess 10 while reducing the diameter.
It is pushed into the back. As a result, the connection sleeve 16
Inner and outer peripheral surfaces, outer peripheral surface of end of conductor 11, and connection recess
10 and the inner peripheral surface of the conductor 11
And the conductive state with the conductor connector 9 is ensured. [0008] The insulating layer 8 may be a part of the insulating molding 8.
Each of the connection recesses is provided in a portion located around the end of the connection 12.
It is inclined in the direction that the inner diameter becomes smaller toward 10 and 10.
In addition, the first inner diameter side tapered surfaces 22 are formed.
Then, as described above, the end of the conductor 11 and the conductor connector 9 are connected.
In the connected state, these first inner diameter side tapered surfaces 22, 2
Gap between the insulating layer 12 and the insulating layer 12
Block insulators 21 and 21. Each of these
The mold insulators 21 and 21 are made of an insulating portion made of EP rubber and a cover.
Combined with EP rubber semi-conductive part with carbon added
It has a shape like an abacus ball stretched in the axial direction.
I do. The axial direction of each of these pre-mold insulators 21, 21
The one half portion is in close contact with the first inner diameter side tapered surface 22.
The first outer diameter side tapered surface 23 is formed. or,
In the other half of the pre-mold insulators 21 and 21 in the axial direction.
Are further away from the connection recesses 10 and 10.
The second tapered surface on the outside diameter side inclined in the direction to decrease the diameter
24 are formed. Each of the pre-mold insulators 21, 2 as described above
1 is the first inside of the first
It is pressed toward the radially tapered surface 22. Fiber reinforced plus
Each of these pressing sleeves 25 made of tic etc.
The peripheral surface is inclined in the same direction as the second outer diameter side tapered surface 24.
The second inner diameter side tapered surface 26 is used as the second outer diameter side.
It is arranged around the tapered surface 24. Each such press switch
Leaves 25, 25 are respectively raised by pressing means 27.
It is pressed toward the pre-mold insulator 21. Each of the pressing means 27, 27
Provided between the end plates 6, 6 and the pressing sleeves 25, 25.
I am. Each of these second end plates 6, 6 has a fixed ring 28.
Are supported by a plurality of studs 15, 15, respectively.
I have Also, the base end face of each of the pressing sleeves 25,
The circle on the end surface opposite to the second tapered surface 26 on the inner diameter side.
At multiple locations in the circumferential direction, multiple guide locks
The base ends of the doors 29, 29 are connected and fixed. And this
Fix the distal end of each guide rod 29, 29
A guide hole (not shown) formed in a portion of the ring 28 near the inner diameter.
Is inserted. Further, a compression coil spring which is a pressing spring
30 and 30 around the guide rods 29 and 29
Portion between each fixed ring 28 and each pressing sleeve 25
Is provided. Pressing means each constructed as described above
27, 27, the respective pressing sleeves 25, 25 are raised.
Since the pre-mold insulators 21 and 21 are pressed against each other,
The first inner diameter side tapered surface 22 and the first outer diameter side tapered surface
23 and the inner peripheral surface of the pre-molded insulator 21
The end outer peripheral surface of the insulating layer 12 is in close contact with each other without any gap.
You. Therefore, between the insulating layer 12 and the insulating molded article 8
Is not impaired due to the presence of the gap.
In particular, the compression coil springs 3
Configuration based on temperature change because 0 and 30 are incorporated
Regardless of the dimensional change of each member, the pre-molded insulator 2
A gap is formed between the inner peripheral surface of the insulating layer 1 and the outer peripheral surface of the end of the insulating layer 12.
Can be prevented. Incidentally, each of the pressing means 27, 27
The force for pressing the pressing sleeves 25 and 25 is
A nut 31 screwed to the tip of the studs 15, 15;
Change the position of the lock nut 32, and
By changing the distance from the second end plate 6, the compression coil spring 3
It is adjusted by changing the compression amount of 0, 30. Each of the insulating cylinders 5 and 5 is
Body 3 and a cover 3 that covers the pressing means 27, 27
3 and 33 are insulated, and a failure such as insulation failure occurs
To identify the location of this failure
It is. For this purpose, the body 3 and the covers 33,
33 are independently grounded. [0013] The problem shown in FIG.
In the case of such a structure, it is desirable to improve the following points
I can do it. Not only the assembling work is troublesome, but the outer diameter becomes large,
Requires installation space. That is, the respective pressing means 27, 27 are assembled.
When erecting, each pressing means 27, 27
Studs 15, 15 provided with a nut 31, and a lock nut
Screwing with the CV cable 32
Need to be performed at the site where the connection is made (such as inside an underground common ditch)
Assembly work for prefabricated connection parts on site
Become. Also, the guide rods 29 are
Since the studs 15 and 15 are arranged on the
The outer diameter of the pressing means 27, 27 is increased. Each of these
A cover 33 is provided around the pressing means 27, 27, respectively.
Cover, and a protective tape around these covers 33, 33.
Need to be wound. Y Joy as shown in FIG.
In the case of a point, the outer diameter of each of the pressing means 27, 27 is bulky,
The outer diameter of the cover 33 that covers each of these pressing means 27, 27
If it gets bigger, it will be installed in parallel (existing
The space between the two covers 33, 33 becomes narrower,
Wrap the protective tape around each of the covers 33, 33
The task to do is troublesome. Assembly work of Y branch connection part of CV cable
Poor business. That is, the conductor 11 of each CV cable 1, 1
In order to connect the end and the conductor connector 9, the conductor connector
9 is screwed into the press-fixing sleeve 19 and further tightened.
I have. This tightening work presses the end of the conductor 11
The above conductor together with the fixing sleeve 19 and the connection sleeve 16
After being inserted into the connection recess 10 of the connector 9, a special tool
It is necessary to use the
The workability of assembling the branch connection part is deteriorated. The end of the conductor 11 and the conductor connector 9
Connection work may deteriorate insulation.
You. That is, the press-fixing sleeve 19 and the tool are insulated.
When it is inserted into the molded article 8, it is formed on the insulating molded article 8.
May damage the first inner diameter side tapered surface 22.
You. And when it is scratched, a minute
A gap is formed, and insulation failure occurs. Also, the above pressing
Screw the fixing sleeve 19 onto the conductor connector 9 and tighten it further.
When this occurs, minute metal powder is generated, and this metal powder
One inner diameter side tapered surface 22 and the insulating layer of the CV cable 1
12 may adhere to the outer peripheral surface. And attached
If it does, insulation of the portion will be poor. The total length of the Y branch connection portion of the CV cable is
become longer. That is, the pre-molded insulator 21 is
11 and the conductor connector 9 are inserted into the connection recess 10.
Prior to insertion, the insulating layer 12 of the CV cable 1
Must be fitted to the end of the In this way,
Pre-mold insulator 2 externally fitted to the edge of edge layer 12
1 is for screwing and tightening of the pressing and fixing sleeve 19
Then, by sliding with respect to the insulating layer 12, the conductor connector
It needs to be kept away from 9. Therefore, this insulating layer 1
2 to expose the shield wire 13 and the surface coating 14
It is necessary to connect CV cables 1 and 1
It is necessary to make it longer than
The total length of the Y branch connection portion of the cable becomes longer than necessary. Book
The Y-branch connection part of the CV cable of the invention is described above.
It has been invented to improve such points. According to the present invention, there is provided a CV cable comprising:
The Y-branch connection part is the same as the CV cable shown in FIG.
As with the Y-branch connection, a case and held in this case
Y-branched insulation molded product and wrapped in the insulation molded product
The buried conductor connector and the contacts provided on this conductor connector
A connection recess, a CV cable having a conductor end protruding,
Between the outer peripheral surface of the end of the conductor and the inner peripheral surface of the connection recess.
And an end of the CV cable.
A pre-molded insulator that is fitted around
Press sleeve located around the field insulator and this
Pressing the pressure sleeve against the pre-molded insulator
Pressure means and said connection sleeve comes out of said connection recess
The retaining means for preventing the coming out and the pressing means are covered.
And a cover. In particular, the Y-branch connection of the CV cable of the present invention
In the portion, the pressing means is supported by the case.
Fixed ring placed around the above CV cable
Between the fixed ring and the pre-molded insulator.
A pusher provided to be displaceable in the axial direction of the CV cable.
Press ring, between this press ring and the pre-mold insulator
A plurality of provided compression springs and a circumferential direction of the fixed ring
The CV cable is formed at a plurality of locations in the axial direction of the CV cable.
Screw holes, and screw them into each of these screw holes.
A plurality of presses having one end surface thereof in contact with one surface of the press ring.
And a pressure screw. Further, the retaining means is provided with the connection recess.
A locking recess formed in a portion of the inner peripheral surface near the opening;
Around the connecting sleeve and diametrically around the connecting sleeve.
The locking recess is supported so that it can be freely displaced.
Piece and this locking piece inward in the diameter direction of the connection sleeve.
An elastic member for urging and a diameter direction of the connection sleeve.
And press the base end of the locking piece, which is the inner end
Therefore, the locking piece is connected to the elastic member against the elasticity of the elastic member.
A pressing piece that presses outward in the diameter direction of the
The pressure piece is displaced in a direction to retract from the base end of the locking piece.
It consists of a stopper for preventing things. In addition,
Is made of conductive material and is connected to the above case via an insulating cylinder.
ing. [0020] Preferably, the pressing means is provided with the fixed member.
Extends in the same axial direction from multiple locations in the circumferential direction
From the tip of each leg
Locking part provided so as to protrude outward in the diameter direction of the ring
Formed on the inner peripheral edge of the annular portion fixed to the case.
And a notch that can pass through each of these locking parts.
You. Then, the fixing ring is connected to each of the locking portions,
Rotate in the circumferential direction after passing through the notch
More support for the case. Also, the second inner diameter side
Multiple in the circumferential direction of the end surface of the pressing sleeve on the side opposite to the paper surface
At the place, connect and fix the base ends of multiple guide rods
Align the tip of each guide rod with the center of each pressing screw.
Each of the pressure springs is inserted into the guide hole
Arrange the compression coil spring around each of the above guide rods.
You. The Y of the CV cable of the present invention constructed as described above
Branch connection part is pre-molded insulator by pressing sleeve
And press between the insulating molding and the insulating layer of the CV cable.
Eliminates gaps and ensures insulation between these insulation moldings and insulation layers
To ensure. In particular, the Y branch connection of the CV cable of the present invention
According to the continuation section, assembly work was reduced by reducing
In addition to simplifying the work, installation with a small outer diameter
Space can be reduced. In addition, a member supported on the connection sleeve side
Between the stop piece and the locking recess provided on the connection recess side of the conductor connector.
By engagement, the connection sleeve and this connection sleeve
The end of the conductor of the externally fitted and fixed CV cable is
Prevent from getting out of the department. The conductor and the conductor
The connector is connected through the connection sleeve. 1 to 9 show an embodiment of the present invention.
Is shown. The feature of the present invention is that
Boss 25 facing the pre-mold insulator 21 and elastic in the axial direction
Structure of the pressing means for performing the pressing, and CV cable
The end of the conductor 11 constituting the cable 1 is connected to the conductor connector 9.
And are electrically connected to each other.
Part from the connection recess 10 a provided in the conductor connector 9.
In the structure of the retaining means that prevents it from coming out easily
Related. Incorporating the retaining means and the pressing means
For the entire structure of the Y-branch connection part of the CV cable,
For example, the structure is the same as that shown in FIG.
The following description will be omitted or simplified, and the following describes the features of the present invention.
The description will focus on the sign. Also, three CV cables 1,
1, conductor 11 and conductor connector 9 of each CV cable
The structure of the connection portion with the connection recess 10a is the same as each other.
Therefore, only for one CV cable 1,
Explanation of the structure and operation of the stopping means and the pressing means
I do. First, regarding the structure and operation of the pressing means,
This will be described with reference to FIGS. The fixing that constitutes this pressing means
A pair of outer peripheral edges of the ring 28
The legs 34, 34 extend in the same axial direction. Soshi
Each of the legs 34, 34 has a locking portion
35 in a state of projecting outward in the diameter direction of the fixed ring 28
Is provided. On the other hand, it is fixed with a screw
The second end plate 6 which is an annular portion fixed to the case
Each of the above-mentioned latches is located at two positions on the inner circumferential edge of the
Notches 36, 36 that can pass through the parts 35, 35 are provided.
ing. The fixed ring 28 is provided with each of these locking portions 35, 35.
After passing through these notches 36, 36,
By rotating in the direction,
You. That is, the fixed ring 2
When the support 8 is supported and fixed, first, as shown in FIG.
Each locking part 35, 35 and each notch 36, 36
To match. Then, with this alignment,
Each of the locking portions 35, 35 is inserted into each of the notches 36, 36.
From the side opposite to the insulating cylinder 5 to the insulating cylinder 5 side.
(From right to left in FIG. 2). After that,
By rotating the ring 28 in the circumferential direction, each of the locking portions 35,
35 and the notch portions 36, 36 in the circumferential direction
Shift. In this state, the locking portions 35, 35
Due to the elasticity of the compression coil springs 30, 30 described above,
The inner surface of the second end plate 6 (the side surface on the insulating cylinder 5 side,
Surface), and is elastically pressed toward
It is held and fixed. Four places at equal intervals in the circumferential direction of the fixed ring 28
The screw holes 37, 37 are provided with
A plurality of holes 37 are provided between the holes 37, 37 (shown in FIG.
In the example, three screws are provided between the screw holes 37, 37, and one is fixed.
Support holes 38, 38 in total
At equal intervals in the circumferential direction and in each case in the axial direction.
Has formed. Also, the base end surface of the pressing sleeve 25 is
The same number as the total number of screw holes 37, 37 and support holes 38, 38
(In the example shown, 16 for each pressing means)
Base ends of guide rods 29, 29 (left end in FIGS. 2 and 3)
Are connected and fixed at equal intervals in the circumferential direction. Soshi
Then, these guide rods 29, 29 are
It is arranged. The pressing sleeve 25 and the stationary ring 2
8, a ring-shaped pressing ring 39 is provided in the axial direction (FIGS.
3 (in the left-right direction). This press
Each of the guide rods 29, 29 is slidable on the ring 39.
Guide holes 40 for inserting through these guide rods
29, 29 are formed in the same phase. Such a press ring 3
9, each of the guide rods 29,
29, with the pressing sleeve 25 and the fixed
It is arranged between the fixed ring 28. In this state,
Ends of guide rods 29, 29 (right end in FIGS. 2 and 3)
The support holes 38, 38 formed in the stationary ring 28 or
Another guide formed in the center of the pressing screw 41, 41
Holes 42, 42. Therefore, the Y branch connection of the CV cable of the present invention
Combination of pressing means for pre-mold insulator 21 forming a continuation portion
In the upright state, the plurality of guide rods 29, 29
Of these, some (in the example shown, 16
The guide rods 29, 29 in the middle 12)
And the support holes 38, 38, respectively.
Both ends are supported. In addition, the rest (in the illustrated example, each pressing
4 of 16 guide rods 29, 29 for each means
The pressing sleeve 25 and the guide holes 42, 42
Both ends are supported by and. Furthermore, like this
Around the guide rods 29, 29
Between the base end face of the valve 25 and the pressing ring 39, respectively.
The compression coil springs 30, 30 are mounted. And this
Each of the compression coil springs 30, 30 allows the pressing screw
Pressure on the pre-mold insulator 21.
I am here. Further, at four positions in the circumferential direction of the fixed ring 28,
In each of the formed screw holes 37, 37, FIG.
Press screws 41, 41 as shown are screwed together. these
Each pressing screw 41, 41 has a male screw on its outer peripheral surface.
And the other guide holes 42 are formed in the center, respectively.
ing. Also, the base end side of the guide hole 42 (the right side in FIGS.
(End side) In the opening, an inner peripheral surface is formed with a square hole 43 having a hexagonal cylindrical shape or the like.
Formed, and by using a tool such as a hexagon wrench, the pressing screw 4
1, 41 are rotatable. Each such pressing screw 4
The front end surfaces (the left end surfaces in FIG. 2) of the first and the first 41
On one side. Therefore, each of the pressing screws 4
1 and 41, and the tip of each of the pressing screws 41 and 41 is rotated.
Whether the end is the inner side of the fixed ring 28 (left side in FIGS. 2 and 3)
By adjusting the amount of protrusion, the compression coil springs
The elasticity of 30, 30 can be adjusted. In addition, each of the pressing screws 4
Projecting from the outer surface of the fixed ring 28 at the base end of
Attach the lock nut to the part
That the pressing screws 41, 41 rotate carelessly.
To prevent. The CV cable of the present invention configured as described above
Of the pre-molded insulator 21 constituting the Y-branch connection part of FIG.
According to the pressure means, the pre-molded insulator 21
Formed on the first outer diameter side tapered surface 23 and the insulating molding 8.
A gap between the first inner diameter side tapered surface 22 and the
Constructs CV cable 1 with inner peripheral surface of Remold insulator 21
Gap between the outer peripheral surface of the insulating layer 12
Ensure insulation between the insulating molding 8 and the insulating layer 12
You. That is, by rotating each of the pressing screws 41, 41,
Adjust the distance between the pressing ring 39 and the pressing sleeve 25,
By adjusting the elasticity of the compression coil springs 30, 30,
This pressing sleeve 25 forms the pre-molded insulator 21.
By setting the pressing force to an appropriate value,
Press in the axial direction and shrink inward in the diametric direction.
Eliminates gaps between surfaces. In particular, the Y-branch connection of the CV cable of the present invention
Part of the pressing means for the pre-mold insulator 21
According to the report, the number of on-site
Not only can it be easier, but it can also be
Can be smaller. That is, the Y branch connection of the CV cable of the present invention
Pressing means for the pre-mold insulator 21 constituting the continuation portion
The pressing sleeve 25, the pressing ring 39, and the fixed ring that constitute
28, compression coil springs 30, 30 and pressing screws 41, 41
The guide rods 29, 29 are previously shown in FIG.
In this state, assemble as the pressing unit 44
You. Then, the pressing unit 44 is attached to the case 2.
As described above, each of the locking portions 35, 35 is
Rotate in the circumferential direction after passing through notches 36, 36
By doing so, it can be done easily. Because of this, underground joints
The work performed in the groove or the like can be reduced. Pressing unit
The pre-mold insulator 21 is pressed with the
Before attaching the cover 33 (CV cable beforehand)
The cover 33 that has been externally fitted to the CV cable 1
Of the compression cores)
The state of the il springs 30, 30 can be visually confirmed. Further, as in the structure shown in FIG.
Studs 15, 1 are provided around the guide rods 29, 29.
Since there is no need to arrange another member such as 5
The diameter of the cover 33 covering the pressing means can be reduced.
You. Therefore, the present invention is suitable for a Y joint as shown in FIG.
If used, increase the space between adjacent covers 33
Work to wind the insulating tape around the cover 33
To be able to do it. Or, between the adjacent covers 33
If the intervals are the same, a pair of CV cables
The pitch of cables 1 and 1 is shortened, and the Y branch of the CV cable
The outer diameter of the connecting portion can be reduced. Next, the end of the conductor 11 and the conductor connection
And the end of the conductor 11 is connected to the conductor 9.
Inadvertently coming out of the connection recess 10a provided in the body connector 9
The structure of the retaining means to prevent it from coming out
This will be described with reference to FIGS. Inner peripheral surface of the connection recess 10a
Is different from the conventional structure shown in FIG.
A simple cylindrical surface with the inner diameter almost unchanged from
are doing. In addition, a multiband
Or multi-contact type connection called multi-contact
A connection sleeve 16a, which is a metal fitting, is externally fitted and fixed. This
Connecting sleeves 16a are concentrically combined with each other
Outer sleeve 45 and inner sleeve 46,
3 that is screwed into the end of the outer sleeve 45
47. Outer sleeve 45 of these
Elastically project from the outer peripheral surface of the outer sleeve 45.
A plurality of conducting elastic pieces (not shown)
The electrical connection between the conductor connector 9 is ensured.
You. Also, the inner peripheral surface of the outer sleeve 45 and the inner
Wedge-shaped engagement with the outer peripheral surface of the knurled sleeve 46
Let me. Further, the tip of the holding sleeve 47 (FIG. 7)
Left end) Outer peripheral surface and base end of the outer sleeve 45
(Right end in FIG. 7) The inner peripheral surface has a male screw
And a female screw. The connection sleeve 16a
Assembled around the end of the conductor 11 in the state shown in FIG.
With the holding sleeve 47 and the outer three
If the screw is screwed into the sleeve 45 and tightened further,
Is directed toward the tip of the conductor 11 (to the left in FIG. 7).
Pressed. And inside and outside of this inner sleeve 46
Both peripheral surfaces are the inner peripheral surface of the outer sleeve 45 and the outer peripheral surface.
Close to the outer peripheral surface of the end of the conductor 11, these outer three
The electrical conduction between the bus 45 and the conductor 11 is ensured. still,
The connection sleeve 16a is connected to the end of such a conductor 11.
Assembling, the holding sleeve 47 and the outers
Screwing and tightening with the leave 45 are performed at the ends of the conductors 11 and
And the connection sleeve 16a are inserted into the connection recess 10a.
Before you do it. Therefore, the end of the conductor 11
With the work of attaching the connection sleeve 16a to the
8 or metal powder adheres to the place to be insulated
Nothing to do. For this reason, Y branch connection of CV cable
As a result of the assembling work of the connecting part, there is no
No. The holding sleeves 47 are flat with each other.
By forming a pair of flat surface portions 48, 48,
Screwing and tightening of the sleeve 47 and the outer sleeve 45
Sometimes, a tool such as a wrench is freely locked. In addition, this
The above-mentioned screwing and
A locking portion 49 for locking the tool when tightening is formed.
You. On the other hand, the opening of the inner peripheral surface of the connection recess 10a is opened.
In the corners of the mouth, the whole circumference or a plurality of places in the circumferential direction
(For example, at two positions on opposite sides), a locking recess 50 is formed.
ing. In addition, the above-mentioned restraint constituting the above-mentioned connection sleeve 16a is provided.
Circumference around the base half (right half of FIG. 7) of the sleeve 47
At multiple locations (for example, two locations on opposite sides)
Each of the locking recesses 50 is supported by a locking piece 51 which can enter the locking recess 50.
I have. That is, on the outer peripheral surface of the base half of the holding sleeve 47,
Screw the base end of the leaf spring 52, which is an elastic member, with a rivet, etc.
And fixed to the tip of the leaf spring 52 by the above-described locking.
The piece 51 is also fixed and fixed with screws, rivets, etc.
I have. Each of the locking pieces is formed by these leaf springs 52.
51 is a displacement of the connection sleeve 16a in the diameter direction.
It is supported freely and the connection piece is
The elasticity is directed inward in the diametrical direction of the sleeve 16a.
Therefore, each of the locking pieces 51 is in a state where no external force is applied.
Exists at the position shown by the solid line in FIG.
In the case shown in FIG.
As shown by the line, the pressing sleeve 47
Displace. In addition, the leaf spring 5
The part protruding from the inner peripheral side surface of the tip 2 has a hemispherical convex
A portion 53 is formed. The outer peripheral surface of the base end of the holding sleeve 47
At a plurality of locations in the circumferential direction (for example, two locations on opposite sides)
The pressing piece 54 is provided at a position where it is aligned with each locking piece 51.
In the axial direction of the pressing sleeve 47 (the left-right direction in FIG.
(Up and down direction in FIG. 9). That is,
The base end face (right end face in FIG. 7) of the holding sleeve 47 is cut off.
An L-shaped holding plate 55 is screwed and fixed.
5 and the base of the pressing sleeve 47.
Between the end outer peripheral surface, the base end of the pressing piece 54 is
It is guided so as to be freely displaceable in all directions. Also, this pressing piece 54
Push rod 5 having one end (the left end in FIG. 7) connected to the base end face
7 is formed in the guide hole 58 formed in the holding plate 55.
, And is loosely inserted so as to be freely displaceable in the axial direction. Soshi
Then, at the other end of the pressing rod 57,
The part protruding on the side opposite to the connection recess 10a is
It faces the annular stopper 59. Further, the above pressing
Another leaf spring 60 or the like is provided between the piece 54 and the holding plate 55.
A spring is provided so that the pressing piece 54 is
Retreating direction from the lower sleeve 47 (downward in FIG. 9)
Of elasticity. The tip of each of the pressing pieces 54 is inclined to the outer peripheral side surface.
A slope 61 is formed, and the thickness of the tip of the pressing piece 54 is
It becomes smaller toward the leading edge. Therefore, on
The stopper 59 is pressed toward the connection recess 10a.
And the engagement between the inclined surface 61 and the convex portion 53,
The first half of the pressing piece 54 is pressed against the elasticity of the leaf spring 60.
Between the locking piece 51 and the outer peripheral surface of the holding sleeve 47
And the retaining piece 51 is
The locking piece 51 is displaced diametrically outward to lock the locking piece 51.
The recesses 50 are made to enter. In this state,
Connection sleeve 16a including a sleeve 47 and this connection sleeve
16a is fixed to the conductor recess 10a
Will not escape. The structure of the retaining means of this embodiment as described above is
When assembling, remove the connection sleeve 16a beforehand.
The end of the conductor 11 fitted and fixed is connected to the connection recess 10.
Insert into a. At the time of this insertion work, the pressing piece
The first half of 54 is provided with the locking piece 51 and the holding sleeve 47.
Without pressing between the outer peripheral surface of the
As indicated by a solid line in FIG.
Keep it inward. And the above-mentioned locking piece 51 and the front
Until the locking recess 50 is aligned, the connection slot
If the probe 16a is inserted into the connection recess 10a,
In this case, the stopper 59 is displaced toward the connection recess 10a.
And make the locking piece 51 enter the locking recess 50.
The pre-mold insulator 21 (FIGS. 1 and 2) described above and
Assembling such as pressing means is performed. Conductor connection with conductor 11
The connection operation with the child 9 is performed by connecting the connection sleeve 16a to the connection sleeve 16a.
Inserted into the connection recess 10a, and
It is only necessary to press the pressing rod 57. Therefore, the connection
Work can be done easily. During the connection work,
Field insulator 21 far away from the connection sleeve 16a.
There is no need to keep it, Y-branch of CV cable
The axial dimension of the connecting portion can be reduced. As described above, the retaining means and the pushing
Of the Y-branch connection of the CV cable of the present invention,
When assembly is completed, the outer surface of the stopper 59
(Right side in FIG. 7) is suppressed by the end face of the pre-mold insulator 21.
The stopper 59 is moved from the connection recess 10a.
Prevents displacement in the direction away from you. For this reason,
The stop piece 51 does not come out of the locking recess 50, and
The connection sleeve 16a and the conductor 11 are
It can be reliably prevented from falling out of a. Also, in this state
The conductor 11 and the conductor connector 9 are connected by the connection three
Y-branch of the above CV cable
A plurality of CV cables connected to each other via a connection unit
The one conductors 11 are reliably conducted. On the other hand, the retaining means and the pressing means
The Y-branch connection part of the CV cable of the present invention including the means is divided.
When disassembling, the pre-mold insulator 21 is
Evacuate (move to the right in FIG. 7)
Move the stopper 59 away from the connection recess 10a.
If displaced in this direction, the connection sleeve 16a and
The conductor 11 can be extracted from the connection recess 10a. Immediately
Then, the stopper 59 is moved away from the connection recess 10a,
Based on the elasticity of the leaf spring 60, the pressing piece 54 is
By retracting from the base end of the locking piece 51, the leaf spring 52
The locking piece 51 is formed based on the elasticity of the locking recess 50.
Get out of. In this state, the CV cable 1 is
By pulling away from the body connector 9, the connection three
The conductor 16a and the conductor 11 from the connection recess 10a.
Out and can disassemble the Y-branch connection of the above CV cable.
You. Further, in the illustrated example, the main body 3 of the case 2 or
Is a part for connecting and fixing the insulating cylinders 5, 5 to the first end plate 4.
By devising the structure of the insulating cylinders 5, 5
Enables thinning. That is, the main body 3 and the first
These insulating cylinders 5, 5 should be connected and fixed at a part of the end plate 4.
Connecting cylindrical portions 62, 62 each having an external thread formed on the outer peripheral surface thereof.
And an outer peripheral surface of a base end portion of each of the insulating cylinders 5, 5.
In addition, an outward flange-shaped flange 63 is formed. Soshi
Then, the cap nut 64 screwed into each of the connecting cylinder portions 62, 62
Of the connecting cylinder portions 62, 62
Hold down on the tip surface and insulate each of the above-mentioned
5, 5 are fixedly connected. Adopt such a structure
As a result, as in the conventional structure shown in FIG.
There is no need to form screw holes in 5, 5
The thickness and weight of the edge cylinders 5 and 5 can be reduced. In addition, this
Are connected through the respective insulating cylinders 5,5, each of which is electrically conductive.
The body 3 made of material and the covers 33, 33 are independent of each other.
In the event of a power transmission accident such as insulation breakdown,
The location of occurrence can be specified. In order to more effectively obtain the effects of the present invention,
Greater reduction in size and weight of prefabricated connections for CV cables
In order to realize the width, the conductor connector 9 is made of aluminum.
Or made of aluminum alloy to make it thinner
it can. Further, as the diameter of the insulating cylinders 5 and 5 is reduced,
In accordance with the fact that the diameter of the case 2 can be reduced,
The thickness of the shape 8 and the diameter of the pre-mold insulator 21
It can be reduced as long as the insulation is not impaired. According to the present invention, the Y-branch connection portion of the CV cable according to the present invention.
Is constructed and works as described above, so the following ~
The effect as described above can be obtained. Easy assembly work including pressing means and retaining means
it can. Installation space can be reduced by reducing the outer diameter of the pressing means.
Time and ease of winding the insulation tape.
You. The connection between the conductor end and the conductor
Improve reliability and durability without deteriorating edge
I can do it. The total length of the Y branch connection portion of the CV cable can be reduced. Disassembly work of Y branch connection part of CV cable becomes easy.
You. Because of these, the installation space is small, lightweight, and
Easy to assemble and disassemble CV cable Y
This can contribute to the realization of a branch connection.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing an example of an embodiment of the present invention. FIG. 2 is an enlarged view of the upper right part of FIG. FIG. 3 is a half cutaway side view showing a pressing unit constituted by a pressing sleeve, a pressing ring, a fixed ring, a compression coil spring, a pressing screw, and a guide rod. FIG. 4 is a partially omitted illustration of a state during assembly, FIG.
-A view. FIG. 5 is a perspective view of a pressing screw. FIG. 6 is a perspective view of a stationary ring. FIG. 7 is an enlarged view of a portion B in FIG. 1; FIG. 8 is a cross-sectional view taken along the line CC of FIG. FIG. 9 is a partial cross-sectional view as viewed from above in FIG. FIG. 10 is a sectional view showing an example of a Y-branch connection portion of a conventionally proposed CV cable. FIG. 11 is a sectional view of a connection sleeve. FIG. 12 is an end view seen from the right side of FIG. 11; FIG. 13 is a sectional view of a pressing and fixing sleeve. FIG. 14 is an end view as viewed from the right side of FIG. 13; [Description of Signs] 1 CV cable 2 Case 3 Main body 4 First end plate 5 Insulation cylinder 6 Second end plate 7 Opening 8 Insulation molding 9 Conductor connector 10, 10a Connection recess 11 Conductor 12 Insulating layer 13 Shield Wire 14 Surface coating 15 Stud 16, 16a Connection sleeve 17 Receiving-side inclined surface 18 Slit 19 Press-fixing sleeve 20 Push-side inclined surface 21 Pre-mold insulator 22 First inner diameter side taper surface 23 First outer diameter side taper surface 24 Second outer diameter side tapered surface 25 Pressing sleeve 26 Second inner diameter side tapered surface 27 Pressing means 28 Fixed ring 29 Guide rod 30 Compression coil spring 31 Nut 32 Lock nut 33 Cover 34 Leg 35 Locking portion 36 Notch 37 screw hole 38 support hole 39 press ring 40 guide hole 41 press screw 42 guide hole 43 square hole section 44 press unit 45 outer three B 46 Inner sleeve 47 Pressing sleeve 48 Flat surface portion 49 Locking portion 50 Locking concave portion 51 Locking piece 52 Plate spring 53 Convex portion 54 Pressing piece 55 Pressing plate 56 Eaves plate portion 57 Press rod 58 Guide hole 59 Stopper 60 Plate spring 61 Inclined surface 62 Coupling cylinder 63 Flange 64 Cap nut

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H02G 15/08 H02G 1/14

Claims (1)

(57) [Claims] [Claim 1] A case and Y held in the case
An insulating molded product for branching, a conductor connector embedded in the insulating molded product, a connection recess provided in the conductor connector, a CV cable having a conductor end protruding, A connecting sleeve provided between the outer peripheral surface of the end of the CV cable and the inner peripheral surface of the connection concave portion, a pre-mold insulator externally fitted around the end of the CV cable, and a periphery of the pre-mold insulator , A pressing means for pressing the pressing sleeve toward the pre-mold insulator, a retaining means for preventing the connection sleeve from falling out of the connection recess, and a cover for covering the pressing means In the Y-branch connection portion of the CV cable, the pressing means comprises: a fixed ring disposed around the CV cable while being supported by the case; A pressing ring provided so as to be displaceable in the axial direction of the CV cable, a plurality of compression springs provided between the pressing ring and the pre-mold insulator, and a circle of the fixed ring. The CV is installed at multiple locations in the circumferential direction.
It comprises a plurality of screw holes formed in the axial direction of the cable, and a plurality of pressing screws which are screwed into the respective screw holes and one end surface of which is in contact with one surface of the pressing ring. A retaining recess formed at a portion of the inner peripheral surface of the connection recess close to the opening, and a retaining recess supported around the connection sleeve so as to be displaceable in a diameter direction of the connection sleeve. A locking piece that can enter the stop recess, an elastic member that urges the locking piece inward in the diameter direction of the connection sleeve, and a locking piece that is an inner end of the connection sleeve with respect to the diameter direction. A pressing piece that presses the locking piece against the diametric direction of the connection sleeve against the elasticity of the elastic member by pressing the base end, and a pressing piece that is a base end of the locking piece. Stopper to prevent displacement in the direction to retract from Are those consisting of the cover is made of conductive material, Y branch connection portion of the CV cable, characterized in that coupled to the casing via an insulating cylinder.