JPS62181616A - Cable joint - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a cable connection part used, for example, in a connection part of a gas-filled cable filled with pressurized gas.

[Prior art and its problems] In cables that undergo gas maintenance, Ikg is not included in the cable.
/cm2 or less of air or nitrogen gas is sealed,
It is necessary to keep the inside airtight to prevent gas leakage from the connection. For this reason, conventionally, in constructing the connection portion of the cable, the Urasuke lead pipe construction method using heat, the GS cable construction method, or purely mechanically, the airtight construction method using sealing tape, etc., have been used.

However, the cable connections using these conventional airtight construction methods are complicated and require heat.
It is difficult to work because it requires wrapping multiple layers of highly adhesive sealing tape, and it requires skill to perform these tasks, making it difficult to always obtain uniform airtightness. Ta. For this reason, to compensate for these drawbacks of the conventional method, there are methods that use non-adhesive rubber backing, but this method has poor adhesion to the external waves of the cable, and over a long period of time, the airtightness of the connection part may deteriorate. However, there were drawbacks such as a lack of reliability, such as deterioration of the gas and gas leaks.

"Objective of the invention Q The present invention was made in view of the above circumstances, and
The purpose of this cable connection is to provide a highly reliable cable connection that is simple in construction, easy to install, and has excellent internal airtightness.

[Means for Solving the Problems] In order to achieve the object, the present invention has the following configuration. In other words, the first cable connection part of the present invention includes a cylindrical connection case that covers the connection part of the cable, and a cylindrical connection case that covers the connection part of the cable, and a cylindrical connection case that has an outer periphery of the six cables inside the connection case facing toward the open end of the connection case. Each pair of gripping parts (with a head, an end plate, a sealing member, a pressing plate, a fixing plate, and a fastening part) are arranged in sequence, and the gripping members hold the cables together with the gripping slides. The assembly is integrally connected by a connecting member, the end plate is connected and fixed to the gripping member, and the sealing member is sandwiched between the inner peripheral part and the outer peripheral part of the end plate and the pressing plate, respectively. and the end plate and the fixing plate, which is provided so as to be movable toward and away from the end plate, are integrally tightened via the fastening member, with the pressing plate in between. It is said that

[Function] In the cable connection section having the above configuration, the end plate and the fixing plate provided so as to be able to move toward and away from the end plate are integrally tightened via the fastening member. The sealing member is pressed between the end plate and the pressing plate and comes into close contact with the cable and the connection case,
When the space between them is airtightly sealed, the fixing plate is pressed against the inner circumference of the connection case and fixed.

[Embodiment] FIGS. 1 to 6 show an embodiment of the cable connection part of the present invention.

In FIGS. 1 and 2, the reference numeral l in the figures is a cylindrical member made of PVC or the like for the connection part that covers the connection part 3 of the connected cable 2.2. A gas valve 4 is provided in the case I to seal in pressure gas for gas maintenance.

On the external wave of each cable 2 in the connection case 1, there are a gripping member 5, an end plate 6, a sealing member 7°8, and a pressing plate 9.
, a fixing plate 10 and a fastening member 11 are sequentially arranged from the inside of the connection case 1 toward the open end 1a thereof.

As shown in FIGS. 3 and 4, the gripping member 5 has the following features:
A thick band-shaped clamping plate 13 is provided with a half-cylindrical fixing fitting 12 in the center thereof, and this clamping plate 13 is provided opposite to the fixing fitting 12 in the central part and forms a cylindrical shape as a whole. It consists of an external clamping metal fitting 14 and a pair of internal clamping metal fittings 15 and 15 in the shape of approximately half cylinders, which are sandwiched between the fixing metal fittings 12 and the external clamping metal fittings 14 and provided on the inner peripheral surfaces of each. be. Here, the above-mentioned internal clamp fitting 15.15
The inner diameter of the cylindrical shape formed by the cable 2 is slightly above the outer diameter of the cable 2. = Rokuri, 7!
-, h, -h; +Ja! 1(rtJxk4=!W(material 1
The cable 2 is inserted between 5.15 and 15.

The above-mentioned gripping portion (45 represents these internal clamping fittings 15
．． The temporary clamp 13 and the external clamp 14, which sandwich the cable 15 between them, are firmly fixed to the outer periphery of the cable 2 by tightening bolts 16 and 16 at both ends of each other. Furthermore, a pair of these gripping members 5.5 fixed to the outer periphery of each cable 2 each have a bolt 17. , through the connecting rod (connecting member) 18.
It is integrally connected to connecting plates 19 and 19 at both ends of 18. Here, connecting plates 19 and 19 at both ends of the connecting rod 18
are formed to extend further toward the open end 1a side of the connection case l than the gripping member 5.5, and the end plates 6 are attached to both ends of these connecting plates 19 and 19, respectively. .

As shown in FIGS. 5 and 6, this end plate 6 is a disc-shaped member whose outer diameter is approximately equal to the inner diameter of the connection case 1, and the outer diameter of the cable 2 is located in the center of the end plate 6. An opening 20 having a slightly larger diameter is formed. Furthermore, a locking protrusion 21 is formed at the end of the opening 20 on the side of the gripping member 5, projecting inward therefrom and having an inner diameter approximately equal to the outer diameter of the cable 2. And this end plate 6
The end portion 22 on the side of the gripping member 5 has a small plate-shaped bulge in the axial direction, and the connecting plate 19.1.
A mounting surface 23 on which bolts 9 abut is formed in a planar shape, and bolt holes 24 . ．． ．． A supporting portion 25.25 having a perforation therein is integrally formed. This end plate 6 has an opening 20
The cable 2 is inserted inside, and the bolts 26, ,
, is connected to the support portion 25.2 with the connecting plate 19.19 interposed therebetween.
5 bolt holes 24. ．． ．． By being screwed together, it is integrally connected to the gripping member 5 via the connecting plate 19, 19.

Further, the sealing member 7 is provided in the opening 20 of the end plate 6, and the sealing member 7 is further provided in a stepped portion 28 formed on the outer periphery of the end surface 22 of the end plate 6 on the opposite side. are included in each. Here, the sealing member 7 is formed into a ring having a V-shaped groove 27 formed at the center of its outer circumferential surface and a Y-shaped cross section that gradually becomes narrower toward the center of its inner circumference. It is what was done. This sealing member 7 is
Inside the opening 20 of the end plate 6, the - side is in contact with the locking protrusion 2I, and the inner peripheral surface is in close contact with the sealing tape 28 wound around the outer sheath of the cable 2. installed. On the other hand, the sealing member 8 incorporated in the outer peripheral portion of the end plate 6 is a well-known O-
It's a ring. The pressing plate 9 is disposed on the side of the end plate 6 with the sealing members 7 and 8 interposed therebetween.

This pressing plate 9 is a disc-shaped member whose outer diameter is approximately equal to the inner diameter of the connection case 1, and the cable 2 is inserted into an insertion hole bored in the center thereof. The inner peripheral part and the outer peripheral part of the end surface of the pressing plate 9 on the side of the end plate 6 include
A projection 29.30 is formed which projects axially therefrom and presses against the sealing element 7.8 in each case. Further, a tapered nose portion 31 is formed on the inner peripheral portion of the other end surface of the pressing plate 9, and the outer diameter thereof is gradually reduced when protruding from this in the axial direction. The fixing plate 10 is provided on the nose portion 3I of the pressing plate 9.

The fixing plate 10 is a disc-shaped member whose outer diameter is approximately equal to the inner diameter of the connection case 1, and the outer diameter of the fixing plate 10 is slightly smaller than the large diameter part of the nose part 31 of the pressing plate 9 at its center. An opening having an inner diameter is bored. Here, the inner periphery of this opening is formed into a tapered shape that matches the taper of the nose portion 31, and the fixing plate IO is provided with a notch for cutting it with a predetermined width in the radial direction. 32 is formed.

The end plate 6, the pressing plate 9, and the fixing plate 10 each have a large number of bolts 33, each of which has its tip end screwed into the bolt direction of the end plate 6. ,,． 34. , are integrally connected by a fastening member 11 consisting of. Here, the sealing members 7.8 each connect the pressure plate 9 to the end plate 6.
The bolt 34 is fixed to the bolt 34. ,,.

By being tightened, it is pressed between the end plate 6 and the protruding parts 29, 30 of the pressing plate 9, and comes into close contact with the outer periphery of the cable 2 and the connection case 1, thereby airtightly sealing the space therebetween. ing. The bolt 339 further passes through the pressing plate 9 and fixes the fixing plate IO to the end plate 10. When the fixing plate 10 is tightened, the fixing plate 10 moves toward the pressing plate 9 along the nose portion 31 of the pressing plate 9, and the opening thereof is expanded and the notch 32 is spaced apart. Its outer peripheral surface is pressed against the inner peripheral surface of the connection case 1 and is fixed to the connection case I.

In the cable connection section constructed in this way, each component is all bolted 16, 17, 26.
33, there is no need to use heat or wrap multiple layers of highly viscous sealing tape as in the past, and installation is extremely easy without requiring any skill. It's simple. In addition, since it can be easily removed in the same way,
Its maintenance is also extremely easy. Furthermore, since the gripping members 5, 5 fixed to each cable 2 are integrally connected to each other by the connecting rod 18, even if a tensile force is applied to the cable 2.2, this will directly act on the connecting portion 3. Therefore, this connecting portion 3 can be reliably protected.

The sealing part (off, 8 is the above-mentioned POL) installed between the end plate 6 and the press plate 9 33. .

Cable 2. t3 and the connection case 1 to airtightly seal the inside of the connection case I, so that high air-conductivity can be obtained. Therefore, the bolt 33. .

Since the tightening can be performed from the open end 1a side of the connection case I, adjustment and additional tightening can be easily performed. Furthermore, since the sealing member 7 has a Y-shaped cross section with a groove 27 formed on its outer peripheral surface, the above i
M! 27 is crushed, thereby causing its inner peripheral portion to bulge out toward the sealing tape 28 on the outer periphery of the cable 2, thereby achieving even more reliable airtightness.

[Effects of the Invention] As explained above, the cable connection part of the present invention includes a cylindrical connection case that covers the connection part of the cable, and a cylindrical connection case that covers the connection part of the cable, and an outer periphery of each of the cables in the connection case that is directed toward the open end of the connection case. Each pair of gripping members, an end plate, a sealing member, a pressing plate, a fixing plate, and a fastening member are arranged in sequence, and the gripping members grip each of the cables and are connected to each other by a connecting member. integrally connected, the end plate is connected and fixed to the gripping member, and the sealing member is sandwiched and incorporated in the inner peripheral part and the outer peripheral part of the end plate, respectively, and is sandwiched between the sealing member and the pressing plate, The end plate and the fixing plate, which is provided so as to be able to move toward and away from the end plate, are integrally tightened via the fastening member, with the pressing plate in between, so that the sealing member The fixing plate is pressed between the end plate and the pressing plate, and is pressed between the cable and the connection case, so that the fixing plate is pressed and fixed to the inner circumference of the connection case. . Therefore, this type of cable connection has a simple structure, is easy to install and maintain, and can maintain high internal airtightness for a long period of time. The reliability of the system can be greatly improved.

can.

[Brief explanation of drawings]

1 to 6 show an embodiment of the cable connection part of the present invention, in which FIG. 1 is a side view of the main part, and FIG.
The figures are a view taken along the line ■-■ of FIG. 1, FIG. 3 is a front view of the gripping member, FIG. 4 is a view taken along the IV-IV line of FIG. 3, FIG. The figure is a cross-sectional view along the line ■-■ in Figure 5...connection case, 2...cable,
3... Connection portion, 5... Gripping member, 6...
... End plate, 7.8 ... Sealing member, 9.
...Press plate, 10...Fixing plate, 11...
... Fastening member, 16.17.26, 33.34...
...Bolt, 18...Connection rod (connection member), 1
9...Connecting plate, 27...7/L2g...
...Sealing tape, 29, 30...Protrusion, 31...Nose part, 32...Notch.

Claims (2)

[Claims] (1) A cylindrical connection case that covers the connection portion of the cable, and each pair of gripping members sequentially arranged on the outer periphery of each of the cables in the connection case toward the open end of the connection case;
It comprises an end plate, a sealing member, a pressing plate, a fixing plate, and a fastening member, and the gripping member grips each cable and is integrally connected to each other by a connecting member, and the gripping member has the end The face plates are connected and fixed, and the sealing members are sandwiched and incorporated into the inner and outer circumferential parts of the end plate, respectively, with the sealing member sandwiched between the pressure plate and the end plate. The fixing plate, which is provided so as to be able to move toward and away from the end plate, is integrally tightened via the fastening member, so that the sealing member is pressed between the end plate and the pressing plate. A cable connecting portion, characterized in that the space between the cable and the connecting case is sealed airtight, and the fixing plate is pressed against and fixed to an inner peripheral portion of the connecting case. (2) The pressing plate has a tapered nose portion formed on the opening end side of the connection case, the outer diameter of which gradually decreases toward the opening end, and a tapered nose portion whose outer diameter gradually decreases toward the opening end. The fixing plate has an inner diameter smaller than the outer diameter of the large diameter portion of the nose portion and has a notch communicating from the inner circumference to the outer circumference, and the fixing plate is arranged to hold the end of the nose portion with the pressing plate in between. By integrally tightening the face plate and the fixing plate via the fastening member, the inner peripheral part of the fixing plate is expanded in diameter along the nose part, and the fixing plate and the outer peripheral part of the fixing plate are connected to the connection case. 2. The cable connection portion according to claim 1, wherein the cable connection portion is fixed to the connection case by being pressed against an inner circumferential surface of the cable connection portion.