JPH0667098B2 - Cable connection closure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention is directed to a pulling force that prevents intrusion of water or the like into a connection portion of a communication cable or the like and acts on the communication cable or the like.
The present invention relates to a cable connecting closure that protects a connecting portion from external forces such as compressive force and vibration.

(Prior Art) At the connection point of a communication cable, it is necessary to prevent the ingress of water and the like from the outside because the core wire connection is made after removing the cable sheath, and for this reason, the airtight structure A cable connection closure is used.

This cable connection closure not only prevents water and the like from entering from the outside but also encloses pressurized air, nitrogen gas, etc. in the cable to make it more waterproof including the cable part (common name In "gas maintenance"), it is also required to prevent the enclosed pressurized air, nitrogen gas, etc. from leaking from the connection portion to the outside.

FIG. 5 is an exploded perspective view showing an example of a conventional cable connecting closure of this type. In the figure, reference numerals 100 and 110 are cables, 200 is a sleeve, 300 is a gripping hardware, and 400 is an end face plate.

The sleeve 200 has a cylindrical shape and is divided into two sleeves 210 and 210 each having a semicircular cross section. The two sleeve pieces 210 and 210 cover the cables 100 and 110 and the connecting portion 120. Here, by attaching the sleeve connecting bolt 230 to the joint portions 211 and 211 of the sleeve pieces 210 and 210 and connecting them to each other, the sleeve piece 21
0, 210 are integrated. In addition, this joint 211,
A sleeve seal material 220 is interposed between the 211.

In addition, as shown in detail in FIG.
Notch line 10 provided on the cable jacket 101 (111)
1a (111a) is inserted between the cable core (not shown) and the cable jacket 101 (111) to have a pair of internal gripping members 310 with a semicircular cross section (in the drawing, the joint portion 311 protruding from the cable jacket 101 is It is shown)
And a pair of external gripping hardware 320 having the same semi-circular cross section and fitted from the outside of the cable jacket 101 (111), and a joint portion 311 of the internal gripping hardware 310.
It is fixed to the outer periphery of the cable 100 (110) by connecting the joint part of the external gripping hardware 320 to each other with the bolt 330.

The gripping hardware 300 is fixed to the cables 100 and 110, respectively, and the two connecting rods 500 made of rigid bodies are
By connecting to each other at 500, external force is prevented from acting on the connecting portion 120. That is, the external force acting on the cables 100, 110 is applied to the gripping hardware 300, 30.
0 and the connecting rods 500 and 500 are designed to receive them.

Further, the end face plate 400 is made of an elastic material, has a cable through hole 410 in the center thereof, and is attached to the openings 240 at both axial ends of the sleeve 200, respectively. As shown in detail in FIG. 7, the end face plate 400 is divided into two end face plate pieces 420, 420 each having a semicircular cross section. And
The joint portions 421 and 421 of the end face plate pieces 420 and 420 are connected to each other by a connecting bolt 423. Here, the mating face seal material 460 is interposed between the joint portions 421 and 421. In addition, a filling portion 411 for filling the adhesive sealing material 430 in the central portion of the inner peripheral surface of the cable through hole 410.
Are provided on both sides of the filling portion 411, and portions 412 to which a sealing washer 440 made of an elastic material for preventing leakage of the adhesive sealing material 430 is fitted are provided. Also,
The outer peripheral surface of the end face plate piece 420 is adapted to fit into a concave portion 241 provided on the inner peripheral surface of the opening 240 of the sleeve piece 210, and the concave portion 422 for filling the outer peripheral surface with the adhesive sealing material 450. Are formed. The end plate 4
00 on both sides, inside the closure (in sleeve 200)
A metal plate may be attached in order to prevent the gas pressure from enclosing the gas from expanding the airtightness.

In the above cable connecting closure, the sleeve 200 covers the connecting portion 120, and the opening portions 240 at both axial ends of the sleeve 200 are closed by the end face plates 400 and 400, so that the sleeve sealing material 220, the adhesive sealing material 430,
By making the inside of the sleeve 200 airtight with the adhesive sealing material 450, it is possible to prevent water and the like from entering the connecting portion 120 from the outside, and to prevent pressurized air, nitrogen gas, etc. enclosed for “gas maintenance”. Prevent it from leaking to the outside. The gripping hardware 300, 300 and the connecting rods 500, 500 receive the external force acting on the cables 100, 110 and do not act on the connecting portion 120.

(Problems to be Solved by the Invention) However, the above-described conventional cable connection closure has the following problems with respect to each component.

That is, with respect to the gripping hardware 300, the internal gripping hardware 310 and the external gripping hardware 320 constituting the gripping hardware 300 are connected to the cable 1
00, 110, and the cable 100,
It is necessary to prepare for each 110, and the number of parts and the types are both increased, and there is a problem that it is difficult to reduce the cost of the closure. In addition, in order to fix the gripping hardware 300 to the cables 100 and 110, the cable jacket 101
A cut line 101a (111a) is provided in (111) to divide the line into 4 to 6 equal parts, and an internal gripping metal piece 310 is provided between a cable core (not shown) and a cable jacket 101 (111).
However, there is a problem that it takes a long time for the assembly work.
Furthermore, although the holding bars 300 are connected to each other by the connecting rod 500, the connecting rod 500 occupies a part of the space inside the closure, so that there is a problem that this space cannot be utilized.

Also, regarding the end face plate 400, the cable 100 (11
0) and the end face plate 400 are sealed by the adhesive sealing material 430, the cable through hole 410
The difference between the inner diameter of the cable 100 and the outer diameter of the cable 100 (110) cannot be made large, and the end face plate 400 is connected to the cable 100 (110).
It is necessary to prepare for each (110), and similarly, the number of parts and the types are both increased, and there is a problem that it is difficult to reduce the cost of the closure.

In addition, the airtight structure inside the closure has the following problems.

That is, the adhesive sealing material 4 filled between the cable through hole 410 and the cable 100 (110) in order to maintain airtightness for a long period even with expansion and contraction due to temperature change.
30 or the adhesive sealing material 450 filled between the sleeve 200 and the end face plate 400, it is necessary to always apply a force to bring them into close contact with the portions in contact with the adhesive sealing materials 430 and 450. The face plate 400 is formed of a rubber elastic material, and the elastic repulsive force generated by the compression of the end face plate 400 is used to apply a force to the adhesive seal members 430 and 450. However, by tightening the sleeve connecting bolt 230 and compressing the end face plate 400, even if a force is applied to the adhesive sealing material 430, the inner peripheral surface of the cable through hole 410, the outer peripheral surface of the cable 100 (110), and the sealing washer. The adhesive seal material 430 until the gap surrounded by 440 is filled with the irregularities of the details and there is no gap.
It was difficult to deform and required a very large tightening force. For example, a large number of sleeve connecting bolts 23
It is necessary to apply a strong torque of 180 kg · cm to 0 using a torque wrench or the like, which causes a problem of poor assembly workability.

Further, since the adhesive sealing materials 430 and 450 are used, even if an attempt is made to dismantle for reconnection, there is a problem that it becomes extremely difficult due to the strong adhesion of the sealing portion.

The present invention solves the above-mentioned problems of the prior art. The object of the present invention is to provide versatility that can be used even when the diameter of the cable is changed, thereby enabling cost reduction, and airtightness even with a small tightening force. It is necessary to provide a closure for cable connection that can secure the workability, further improve the efficiency of assembly work, can effectively utilize the space inside the closure, and that does not take time and effort to disassemble for reconnection. It is in.

[Structure of the Invention] (Means for Solving the Problem) In order to achieve the above-mentioned object, the cable connecting closure according to claim (1) of the present invention can be divided into a plurality of sleeve pieces that cover and accommodate the cable connecting portion. A sleeve, a pair of end face plates that have cable through holes and fit into openings at both ends in the axial direction of the sleeve, and a pair of gripping hardware that grips a cable in the sleeve, In a cable connecting closure that is kept airtight and protects the cable connecting portion from external force, while forming the end plate from a highly rigid material,
A cylindrical gripping tool capable of dividing the gripping hardware into a plurality of gripping tool pieces, arranged at appropriate intervals in the circumferential direction of the gripping tool, movable in the radial direction of the gripping tool, and at the tip thereof. The holding plate provided is composed of a plurality of pressing screw members capable of abutting on the cable, and further between the joint surfaces of the sleeve pieces, between the cable through hole and the cable, and between the end plate and the opening of the sleeve. It is characterized in that a seal member made of an elastic material such as rubber is interposed between the two.

Further, in the cable connecting closure of claim (2), the gripping hardware is formed integrally with the inner surface of the end plate, or is formed separately so as to be connected to the inner surface of the end plate. It is characterized by being configured.

Further, the cable connecting closure of claim (3) is characterized in that the end plate is made of plastic or glass fiber reinforced plastic.

Further, the cable connecting closure of claim (4) is characterized in that the sleeve and the end plate are made of the same material.

(Operation) The gripping tool is fixed to the cable by covering the cable with the gripping tool and tightening the pressing screw member to bring the cable into contact with the cable outer cover. In this case, even if the diameter of the cable changes, it is only necessary to adjust the moving amount of the pressing screw member. Further, since the gripping hardware is integrally provided on the end face plate or is connected to the end face plate, it is not necessary to connect the gripping metal products with each other to a connecting rod or the like. Further, the cable is penetrated through the cable through hole to attach the end face plate, and the sleeve piece is covered so that the end face plate fits into the opening portion to cover the cable connecting portion.

Then, when a plurality of sleeve pieces are integrated by a sleeve fastening member such as a band, the sealing material is elastically deformed by receiving a compressive force from the sleeve, and the joint surfaces of the sleeve pieces and between the end face plate and the opening of the sleeve are formed. Fill the gap between them to ensure airtightness. In addition, between the cable through hole and the cable, when the cable is passed through the cable through hole and the end face plate is attached to the cable, the sealing material receives the compressive force from the end face plate and elastically deforms to ensure airtightness. To do.

As a result, it is possible to prevent water or the like from entering the connection portion of the cable from the outside, and also to prevent pressurized air or the like sealed for "gas maintenance" from leaking to the outside. Further, even if an external force is applied to the cable, the gripping hardware, the end plate, and the sleeve receive the external force, and the external force does not act on the connecting portion of the cable.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 to 4 show an embodiment of the present invention.
FIG. 1 is an overall perspective view partially cut away, FIG. 2 is an exploded perspective view of an end face plate portion, FIG. 3 is a cross-sectional view of a gripping hardware portion, and FIG. 4 is AA of FIG. FIG. In the figure, reference numerals 10 and 11 are cables, 20 is a sleeve, 30 is a gripping hardware, and 40 is an end face plate.

The sleeve 20 is formed in a cylindrical shape, and the cables 10, 1
It covers the connecting portion 12 of No. 1 and has a split structure in which it is divided into two sleeve pieces 22 having a semicircular cross section, and a plurality of sleeve fastening members 24 wound at appropriate intervals in the axial direction. Sleeve piece 2 by tightening
2, 22 are integrated. Here, the sleeve pieces 22, 22
The sleeve seal member 23 is interposed between the joint surfaces 22a, 22a, and when tightened by the sleeve fastening member 24, the sleeve seal member 23 receives a compressive force and elastically deforms, and the airtightness between the sleeve pieces 22, 22 is increased. Hold. The sleeve fastening member 24 includes a band 24a and a back 2
4b, and the fastening force can be adjusted.

The gripping hardware 30 is composed of a cylindrical gripping tool 31 and a plurality of (three in the drawing) pressing screw members 32 which are arranged on the gripping tool 31 at appropriate intervals in the circumferential direction. , Are fixed to the cables 10 and 11 in the sleeve 20, respectively. Here, as shown in FIG. 3, the gripper 31 includes two gripper pieces 31a, 31a having a semicircular cross section.
It has a split structure divided into
After being covered with (11), it is integrated with the bolt 33.
In addition, a convex portion 31b that engages with and is connected to the end face plate 40 is provided on the side surface of the gripper 31 on the end face plate 40 side. Further, the pressing screw member 32 is screwed into the screw hole 31c of the grasping tool piece 31a so as to be movable in the radial direction of the grasping tool 31, and the inner end of the pressing screw member 32 contacts the outer peripheral surface of the cable 10 (11). The plate 34 is rotatably provided. On the inner surface of the pressing plate 34, a protrusion 34a (see FIG. 3) that cuts into the outer skin of the cable 10 (11) is provided.

Further, the end face plate 40 is fitted and attached to the recesses 21a (see FIG. 1) provided on the inner peripheral surface of the opening 21 at both axial ends of the sleeve 20, and is more attached than the conventional rubber end face plate. It is made of a highly rigid material, for example plastic, and has a disc shape. A cable through hole 41 is provided in the center of the disc. A connecting fitting portion 43 is formed on the inner surface of the cable fitting hole 41. Is provided. This end plate 40
As shown in FIG. 2, it has a split structure in which it is divided into two end face plate pieces 44, 44 having a semicircular cross section, and the joint portion 44 a provided on the end face plate piece 44 is connected to the connecting bolt 45.
They are integrated by connecting with. Here, the end face plate 40 (the end face plate piece 4 that fits into the recess 21a of the sleeve 20)
A concave portion 44b is provided on the outer peripheral portion of 4).
end face plate sealing member 46 made of a rubber elastic material between b and the recess 21a
Is intervened. Further, a cable seal member 47 made of a rubber elastic material is interposed between the inner peripheral surface of the cable through hole 41 and the outer peripheral surfaces of the cables 10 and 11, and the joint portion 4 is also provided.
A mating face sealing material 48 is interposed between the 4a and 44a. The mating surface sealing material 48 is made of an adhesive sealing material because it is sufficient to fill the minute irregularities on the surface of the bonding portion 44a. A thin adhesive seal layer is provided on the innermost surface and the outermost surface of the cable sealing material 47, and the surface portion (the circumferential surface of the cable through hole 41, the cables 10, 11 that contacts the cable sealing material 47 by the adhesive sealing layer is provided. The airtightness may be further improved by filling fine irregularities on the outer peripheral surface).

Next, attach the cable connection closures to the cables 10, 1
The case of attaching to the connecting portion 12 of 1 will be described.

First, the gripping tool 31 is divided into two gripping tool pieces 31a and 31a, and the cables 10 and 11 are covered therewith.
Thus, the gripping tool pieces 31a, 31a are connected and integrated. Then, each pressing screw member 32 is evenly tightened by using a screwdriver or the like set to a predetermined tightening torque, and the pressing plate 34 is brought into contact with the outer peripheral surfaces of the cables 10 and 11.
As a result, the protrusion 34a of the pressing plate 34 is attached to the cable 10,
11 bites into the outer skin and the gripping hardware 30
It is fixed with 0 and 11 being gripped.

Further, the end face plate 40 is divided into two end face plate pieces 44, 44 and fitted into the cables 10, 11, and the joint portions 44 a are connected by the connecting bolts 45. At this time, the cable seal material 47 is wound around the outer peripheral surfaces of the cables 10 and 11 in advance, and when the cable seal material 47 is connected by the connecting bolt 45, the cable seal material 47 receives the compressive force from the end face plate 40 having high rigidity, and this compressive force is applied. The elastic repulsive force generated in opposition to the above causes the close contact and seals the gap between the cable through hole 41 and the cables 10 and 11. Further, a mating face sealing material 48 is interposed between the joint portions 44a, 44a, and when the joint bolts 45 are connected, the gap between the joint portions 44a, 44a is sealed.

Then, the sleeve pieces 22 and 22 are covered so that the outer peripheral portion of the end face plate 40 fits into the concave portion 21a.
When the sleeve fastening member 24 is wound and tightened from the outside of the sleeves 2, 22, the sleeve pieces 22, 22 are integrated, and the end face plate sealing material 46 and the sleeve sealing material 23 receive a compressive force from the sleeve piece 22. The elastic repulsive force generated against each other makes close contact with each other to seal the gap between the sleeve 20 and the end face plate 40 and the gap between the sleeve pieces 22 and 22.

As a result, the inside of the closure has an airtight structure to prevent water and the like from entering the connecting portion 12 from the outside, and also to prevent pressurized air, nitrogen gas, etc. enclosed for "gas maintenance" from leaking to the outside. Block. And the cables 10, 11
Even if an external force acts on the gripping hardware 30, 30 and the end plate 4
It is possible to prevent the external force from acting on the connecting portion 12 by the 0, 40 and the sleeve 20 receiving them.

In the cable connecting closure of the above-mentioned embodiment, even if the diameters of the cables 10 and 11 are changed, the holding metal piece 30 and the end plate 40 are provided.
You can easily deal with it without replacing.

That is, for the grip hardware 30, the pressing screw member 32
The amount of movement (the amount of movement of the gripper 31 in the radial direction) need only be adjusted, and it is not necessary to prepare the gripping hardware 30 for each cable 10 (11).

Further, since the end face plate 40 uses the cable sealing material 47 made of rubber elastic material, the cable sealing material 4
The airtightness can be maintained by securing the contact surface pressure of the sealing material equal to or higher than the gas pressure in the closure by winding 7 around the cable 10 (11) and compressing it with the end face plate 40. Therefore, the end face plate 40 provided with the cable through hole 41 having a constant diameter is provided.
Can be applied to several types of cables 10 (11) having different diameters, and it is not necessary to prepare the end face plate 40 for each cable 10 (11).

Therefore, it is possible to reduce the cost by reducing the number and types of component parts.

Further, in order to attach the gripping hardware 30 to the cables 10 and 11, all that is required is to tighten the pressing screw member 32, so that the assembly work time can be greatly shortened as compared with the prior art.

Furthermore, since the grip hardware 30 is connected to the end plate 40,
It is not necessary to connect the gripping hardware 30, 30 to each other with a connecting rod, and it is possible to effectively use the space occupied by the connecting rod as compared with the conventional technique.

On the other hand, regarding the airtight structure between the cable through hole 41 and the cables 10 and 11, the end face plate 40 is made of a material having high rigidity, and the cable sealing material 47 is made of a rubber elastic material, so that the sleeve fastening member 24 is formed. The fastening force of the connecting bolt 45 that integrates the end face plate piece 44, not the fastening force of FIG. No torque is required, and a small tightening force is sufficient.
Regarding the airtight structure between the sleeve 20 and the end face plate 40, the end face plate seal member 46 is made of a rubber elastic material, and a compression force is applied to the end face plate seal member 46 by the fastening force of the sleeve fastening member 24. Although sealing is performed, at this time, since the end face plate 40 is formed of a material having high rigidity, it receives the elastic repulsive force of the end face plate seal member 46 and similarly does not require a too large fastening force.

That is, the end face plate seal member 46 and the cable seal member 47, which are made of rubber elastic material, and the end face plate 40 having high rigidity are combined, and the cable through holes 41 are provided with different fastening forces.
Since the airtightness between the cables 10 and 11 and the airtightness between the sleeve 20 and the end face plate 40 are ensured, a small fastening force is sufficient and the assembling workability is superior to the conventional technique.

Further, when the closure is disassembled for reconnection, since the end face plate sealing material 46 and the cable sealing material 47 made of a rubber elastic material are used, the sealing material has a large adhesive force as in the prior art and is disassembled. There is no situation that makes it difficult.

The end plate 40 and the sleeve 20 may be formed of the same material, and in this case, the expansion and contraction rates do not change due to temperature changes, which is advantageous in maintaining airtightness.

Further, the gripping tool 31 of the gripping hardware 30 may be integrally formed without being connected to the end face plate 40.

Further, since the external force acting on the cables 10 and 11 is transmitted to the end face plate 40, it is required to improve the mechanical strength of the end face plate 40 from the material surface and the structural surface according to the environmental conditions in which the closure is used. . Therefore, in terms of material, it may be formed of glass fiber reinforced plastic (FRP) instead of simple plastic. Further, from the structural aspect, ribs or the like corresponding to stress may be provided to strengthen the structure.

[Effects of the Invention] As described above, according to the invention of claim (1), the end plate is made of a material having high rigidity, and the gripping hardware is provided in a cylindrical gripping tool with an appropriate interval in the circumferential direction. And a pressing screw member that comes into contact with the cable are arranged. Further, between the joining surfaces of the sleeve pieces, between the cable through hole and the cable, and between the end face plate and the opening of the sleeve, an elastic material such as rubber is used. Since the seal material is used, the change in the diameter of the cable can be dealt with only by adjusting the movement amount of the pressing screw member, and thus the versatility is excellent and the cost can be reduced.

Also, the gripping force of the cable can be strengthened with a small tightening force,
Not only can you ensure excellent airtightness,
It is possible to improve the assembly work efficiency, and it does not take time and effort to disassemble for reconnection.

Also, the gripping force of the cable can be strengthened with a small tightening force,
In addition, because it is possible to secure excellent airtightness, it is not necessary to perform bolting as in the prior art to integrate the sleeve pieces with each other. For example, a fastening member (hand) is used. As a result, it is not necessary to provide a flange for connection on the sleeve piece and to make a hole for inserting a bolt in this flange, and the cost of the sleeve can be reduced.

In addition, since the sealing material made of rubber elastic material is used, the sealing material does not leak, and it is not necessary to use the seal ring washer as in the prior art.

Further, according to the invention of claim (2), the gripping hardware is formed integrally with the inner side surface of the end face plate, or is formed separately so as to be connected to the inner side face of the end face plate. Therefore, the connecting rod is not required, and the space inside the closure can be effectively utilized (the effective space for accommodating the core wire is expanded).

Further, according to the invention of claim (3), since the end plate is made of plastic or reinforced plastic containing glass fiber, a reinforcing plate (metal plate) against expansion phenomenon like the end plate made of rubber elastic material. In addition to being unnecessary, in terms of manufacturing, mass production is possible by plastic molding processing,
Since the vulcanization process is also eliminated, the cost of the end plate can be reduced.

Further, according to the invention of claim (4), since the sleeve and the end plate are made of the same material, the expansion and contraction rates with respect to temperature change are the same, which is advantageous in maintaining airtightness.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention.
FIG. 1 is an overall perspective view partially cut away, FIG. 2 is an exploded perspective view of an end face plate portion, FIG. 3 is a cross-sectional view of a gripping hardware portion, and FIG. 4 is AA of FIG. 'A cross-sectional view taken in the direction of the arrow, FIGS. 5 to 7 show the prior art, FIG. 5 is an exploded perspective view of the whole, FIG. 6 is an exploded perspective view of the gripping hardware portion, and FIG. 7 is an end face plate portion. FIG. 10, 11 ... Cable 12 ... Connection part 20 ... Sleeve 21 ... Opening 22 ... Sleeve piece 23 ... Sleeve sealing material 24 ... Sleeve fastening member 30 ... Grip metal 31 ... Gripping tool 32 ... Press screw member 40 ... End plate 41 ... Cable Through hole 43 ... Connection fitting part 46 ... End face plate seal material 47 ... Cable seal material

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yuji Otani 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Masato Hirata 1-16-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Mitsuyoshi Katsuse 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor Kenji Kosugi 1-1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor Hiroshi Takahashi 1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (56) References Japanese Patent Publication No. 61-24895 (JP, B2) 58-360 (JP, Y2)

Claims (4)

[Claims] 1. A sleeve 20 which can be divided into a plurality of sleeve pieces 22 which cover and accommodate the cable connection portion 12, and a cable through hole 41 which is fitted into openings 21 at both axial ends of the sleeve 20. A pair of end plates 40 and a pair of gripping hardware 30 for gripping the cable 10 in the sleeve 20 are provided to hold the cable connecting portion 12 in an airtight state, and an external force acts on the cable connecting portion 12. In the cable connection closure that protects against this, the end face plate 40 is formed of a highly rigid material, and the gripping tool 30 is a cylindrical gripping tool 31 that can be divided into a plurality of gripping tool pieces 32a, and this gripping tool. A holding plate 34, which is arranged at an appropriate interval in the circumferential direction of the tool 31, is movable in the radial direction of the gripping tool 31, and is provided at the tip of the gripping tool 31, contacts the cable 10. It is composed of a plurality of possible pressing screw members 32, and further between the joint surfaces of the sleeve piece 22, between the cable through hole 41 and the cable 10, and between the end face plate 40 and the opening 21 of the sleeve 22. , A closure for cable connection, characterized in that it is constituted by interposing seal members 23, 46, 47 made of elastic material such as rubber. 2. The gripping hardware 30 is formed integrally with the inside of the end face plate, or is formed separately, and is configured to be connected to the inner surface of the end face plate. 1) Cable connection closure 3. The cable connecting closure according to claim 1, wherein the end plate 40 is made of a highly rigid plastic or a glass fiber reinforced plastic. 4. The cable connecting closure according to claim 1, wherein the sleeve 20 and the end plate 40 are made of the same material.