JP2614273B2 - Closure for cable connection - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a closure for protecting a connection portion of a communication cable.

"Prior Art" FIGS. 8 and 9 show a conventional example of a closure for protecting a cable connection portion.

The closure is mainly composed of a disk-shaped end plate 2.2 attached to the cable on both sides of the connecting portion 1 and a vertically divided cylindrical sleeve 3.3 covering the connecting portion 1. The sleeves 3 are attached so as to extend between the end plates 2 to cover the cable connection portion 1 in an airtight manner. In this case, the sleeve 3.3 has a flange-like portion 4.4 (for example, FRP
And the like, which are integrally formed with the sleeve and reinforced with a metal plate or the like), and are opposed to each other.

"Problems to be Solved by the Invention" However, as shown in FIG. 9, since the flange-like portion 4 projects further outside the outer periphery of the sleeve 3, there is a problem that the volumetric efficiency is poor.

Therefore, as shown in FIG. 10, the cable connecting portion 1 is covered with a simply vertical cylindrical sleeve 3A having no flange-like portion, and a band 6 is wound around its outer periphery. It is conceivable to tighten the vertical plate portion 6a with the bolt 7 and the nut 8, but there is a problem that delicate management of the tightening force is required to ensure airtightness. That is, in the case of an appropriate tightening force, the entire circumference of the sleeves 3A and 3A can be pressed almost uniformly by the tension of the band 6, but when the tightening force is increased, a bending moment acts on the vertical plate portion 6a. As a result, the compressive force acts concentratedly in the vicinity of the vertical plate portion 6a, causing deformation of the sleeves 3A, 3A, etc., and thus the airtightness is impaired.

The present invention has been proposed in view of the above circumstances, and has as its object to reduce the amount of protrusion from the outer periphery of a sleeve, prevent deformation of the sleeve, and improve airtightness.

[Means for Solving the Problems] In the closure according to claim 1, the fastener for fixing the band is rotatable by hooks provided at both ends of the band and pins on both hooks along the width direction of the band. The sleeve sealing material, which is composed of a piece to be engaged and a bolt for connecting and separating the pieces and moving closer to each other, and interposed between the vertically split side portions of the split sleeve in a sandwiching state, has an elliptical cross section. And is arranged so that the major axis direction thereof is oriented in the direction of clamping by the two divided sleeves, and is compressed.

Further, in the closure according to claim 2, a pair of semicircular end plates made of plastic are fitted on both ends of the split sleeve in a state where a cable is inserted therebetween, and on both front and back surfaces of the end plate, A cylindrical portion extending the cable insertion hole to the outside and the inside of the split sleeve is protruded, and a gap between an inner peripheral portion of the cylindrical portion and a cable inserted therein is provided with an elastic cable sealing material. Is provided, and
A stopper for preventing the flow of the cable sealing material is provided at an outer end of the cylindrical portion so as to protrude inward.

According to a third aspect of the present invention, there is provided the closure, wherein the cable sealing material according to the second aspect is provided with an elastic seal layer laminated on the first adhesive layer adhered to the outer peripheral surface of the cable. A second adhesive layer is provided thereon,
The second adhesive layer is in close contact with the inner peripheral surface of the cylindrical portion of the end plate, and the elastic seal layer has a higher hardness than both the adhesive layers.

The closure according to claim 4 is provided with a cable holding metal fitting for fixing the cable, and the cable holding metal fitting has a plurality of pressing pins movable in the radial direction at intervals in the circumferential direction. A press plate is provided at the inner end of each press pin, which is in contact with the jacket of the cable, and on the inner surface of the press plate, there is provided a projection into which the jacket of the cable is hardly inserted. Features.

The closure according to claim 5 is provided with a groove along the circumferential direction on an outer peripheral portion of the end plate, and in the groove, an end plate sealing material for maintaining airtightness with the divided sleeve is mounted. The end plate sealing material has a configuration in which an elastic body having adhesiveness is formed in a band shape, and a plurality of temporary fixing protrusions for fitting both ends of the end plate are provided on both sides of the groove. It is characterized by being.

Further, the closure according to claim 6 is characterized in that a plurality of ribs extending in the circumferential direction are arranged on the outer peripheral portion of the split sleeve at intervals in the length direction.

[Operation] The closure according to claim 1 allows the two pieces to be separated and approached by the rotation of the bolt to perform fastening and release of the band. In the fastening operation, when the two pieces are approached by the bolt. The rotation of the pin ensures that the bolt is always arranged in the tangential direction of the sleeve, and that no bending moment acts on the engagement portion with the hook. In addition, a large contact pressure can be generated with a relatively small clamping force by compressing the longitudinal direction of the sleeve seal material.

On the other hand, in the closure according to the second aspect, the length of the contact portion with the cable sealing material is secured by the cylindrical portion extending the cable insertion hole, and the mounting posture of the cable sealing material and the end face plate is stabilized, and the sealing is performed. Sex is enhanced. In addition, the flow of the cable sealing material is prevented by the stopper, and the sealing function can be maintained for a long time.

The closure according to claim 3 is provided with an adhesive layer only in a local portion of the ring-shaped space between the end plate and the cable,
It is possible to cope with various cable diameters by blocking the flow of the pressure-sensitive adhesive layer by closing with a hard elastic seal layer and changing the thickness of the elastic seal layer.

In the closure according to the fourth aspect, the cable can be securely fixed in a state where the projection is inserted into the jacket of the cable, and the pressing plate having the projection is moved by the pressing pin to reduce the pressing force. Adjustment and support for various cable diameters can be facilitated.

The closure according to claim 5, in a state in which one end of the end face plate sealing material is temporarily fixed to the temporary fixing protrusion of the groove, the end disc sealing material is wound, and the other end is similarly temporarily fixed.
Until the split sleeve is covered, the end face plate sealing material can be prevented from falling off.

Further, in the closure according to the sixth aspect, the rigidity of the sleeve against internal pressure and external force is increased by the rib, and the sealing function can be maintained for a long time.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 7. In these figures, parts common to those of the conventional example are denoted by the same reference numerals, and description thereof will be simplified.

In the closure of this embodiment, the split sleeve 10
The band 6 wound around 10 is formed of a thin metal plate or the like, and has hooks 11A and 11B integrally fixed to both ends thereof. The hooks 11A and 11B have locking portions formed in a round hole shape, and the round hole-shaped locking portions 12 are arranged in a pair in the width direction of the van 6. The frame bodies 13A and 13B are respectively engaged with the hooks 11A and 11B, and bolts 14 are provided so as to connect the two body bodies 13A and 13B.

Each of the frame bodies 13A and 13B has a pin 15 protruding from both sides thereof along the width direction of the band 6, and the pin 15 is connected to the hook 11A.
The female screw part 16 is rotatably engaged with the round hole-shaped locking part 12 of 11B, and the female screw part 16 is formed in one piece body 13A in a penetrating state as shown in FIG. In the body 13B,
A through hole 17 that is larger than the outer diameter of the bolt 14 is provided.

The bolt 14 has a large-diameter portion 18 integrally formed on the head thereof, and a male thread portion 19 formed at a tip end except for the vicinity of the large-diameter portion 18. Straight section
20 are formed.

Then, the other piece 13B is externally inserted into the straight portion 20 of the bolt 14, and one piece 13A is screwed into the male thread 19, and the hooks 11A and 11B, the pieces 13A and 13B and the bolt 14 constitutes a fastener 21 for fixing the band 6 to the sleeves 10.

On the other hand, the sleeves 10 have a plurality of ribs 22 extending along the circumferential direction on the outer peripheral portion thereof at intervals in the length direction, and some of them are slightly larger than the width dimension of the band 6. The bands 6 are arranged in parallel to form a pair at intervals, and the band 6 is arranged in a fitted state in a groove 23 formed between the ribs 22 forming the pair. The sleeve 10
The thick part protruding at the same height as the rib 22
24 is provided along the length direction, but the groove 23
Are provided continuously in the circumferential direction so as to cross the thick portion 24. In addition, the thick portion of both split sleeves 10
An inverted trapezoidal groove 25 is formed along the longitudinal direction at the joint between the 24, and a rod-shaped sleeve sealing material 26 is provided in the groove 25 and is sandwiched by the two divided sleeves 10. .
The sleeve sealing material 26 is made of an elastic material such as rubber, has an elliptical cross section, and is arranged in the groove with its major axis direction oriented in the direction of clamping by the two divided sleeves 10. The space between the two split sleeves 10 is sealed by being compressed by the holding force.

Furthermore, the end face plates 40A and 40B provided at both ends of the split sleeves 10 and 10 are formed in a semi-disc shape by plastic, and a pair is fastened by bolts,
In the illustrated example, two cable insertion holes 41 are formed at the joint. Further, tubular portions 42A and 42B are provided on both front and back surfaces of the end face plates 40A and 40B so as to extend the cable insertion hole 41 to the outside and the inside of the closure. In the gap between the cable insertion hole 41 and the cable 30 inserted therein, an elastic and sticky tape-shaped cable sealing material 31 is densely laminated.

As shown in FIG. 7, the cable seal material 31 includes an elastic seal layer 31B provided in a laminated state on a first adhesive layer 31A adhered to the outer peripheral surface of the cable 30, and the elastic seal layer 31B A second adhesive layer 31C is provided thereon, and the second adhesive layer 31C is in close contact with the inner peripheral surfaces of the cylindrical portions 42A and 42B of the end plates 40A and 40B. In this case, for example, ethylene propylene rubber (EPDM) is applied to the adhesive layers 31A and 31C, and synthetic rubber is applied to the elastic seal layer 31B. The elastic seal layer 31B has a higher hardness than the adhesive layers 31A and 31C, and has a hardness of, for example, 35 to 70 (Hs of JIS K6301).
(JIS A) hardness) is selected. The reason for this range is that if the hardness is 35 or less, it is too soft and easily collapsed, and if it is 70 or more, it is too hard to wind and there is a problem that the layers do not adhere to each other. is there.

Further, a stopper 32 for preventing the cable sheet material 31 from flowing to the outside of the closure is provided in the cylindrical portion 42A located outside the closure. The stopper 32 is formed in a pin shape in the illustrated example, and is provided so as to protrude inward from the cylindrical portion 42A by penetrating the cylindrical portion 42A in the radial direction.

On the other hand, on the inner surface side B of the end face plates 40A and 40B, a cable holding bracket 43 for fixing the cable 30 is provided.
The cable gripping bracket 43 is a half-split mounting ring.
44, a plurality of pressing pins 45 movable in the radial direction are provided at intervals in the circumferential direction, and at the inner end of each pressing pin 45, a cable insertion hole 40C of the end face plate 40A / 40B is provided. Arc-shaped holding plate that comes into contact with the jacket of the cable 30 that has passed
A plurality of triangular mountain-shaped protrusions 46a are provided on the inner surface of the holding plate 46 so as to be hardly covered with the sheath of the cable 30. In the illustrated example, the pressing pin 45 is formed of a bolt, and is capable of moving with respect to the attachment ring 44 by being screwed to the attachment ring 44. The attachment rings 44 attached to the end plates 40A and 40B are integrally connected by a connection rod (not shown).

On the other hand, the outer peripheral portions of the end plates 40A and 40B have grooves along the circumferential direction.
A split sleeve 51 is provided in the groove 51.
An end plate sealing material 52 for maintaining the airtightness between 10 and 10 is mounted. The end face plate sealing material 52 has a configuration in which a sticky elastic body is formed in a strip shape, and is formed to have a length that goes around the end face plates 40A and 40B. Also, end plates 40A / 40B
On both inner side surfaces of the groove 51, two pairs of temporary fixing projections 53 are provided adjacent to each other in a mutually facing state, and the end face plate sealing material is provided between these temporary fixing projections 53 facing each other. Both ends of 52 are held in an elastically deformed state.

When assembling the connecting portion having such a structure, a cable sealing material 31 is wound around each cable 30, and end plates 40A and 40B are provided in a state of being sandwiched from above, a stopper 32 is attached, and a sheath at the end of the cable 30 is attached. The cable gripper
After fixing with 43, the split sleeves 10 and 10 are attached to the outer peripheral portions of the end face plates 40A and 40B via the end face seal material 52, and the band 6 is wound around the groove 23 between the ribs 22 of the split sleeves 10 and 10. It is turned and fixed by the fastener 32.

In this assembly operation, when attaching the cable seal material 31, the first adhesive layer 31A is first wound around the cable 30, and the final end thereof is folded, and the elastic seal layer 31B is wound thereon in a laminated state. Finally, the second adhesive layer 31C is wound. At this time, since the elastic seal layer 31B has a high hardness, it is easy to handle.
By adjusting 31B to an appropriate length, it can be easily performed. The second adhesive layer 31C has its final end formed in a tapered shape so that the entire outer peripheral surface after winding is approximated to a circle. Then, the end face plates 40A and 40B are attached and fixed so as to compress the elastic seal layer 31B.
Alternatively, as shown in FIG.
Of the elastic seal layer 31B is formed in a tapered shape, and a third adhesive layer is formed on the tapered portion at the front end.
The one with 31D is wound in a laminated state on the adhesive layer 31A, and finally the second adhesive layer 31C is wound. In addition, in order to improve the workability of winding the elastic seal layer 31B, a thin adhesive may be applied to both sides on both sides thereof.

When attaching the end plate sealing material 52, use the end plate
One end of the end plate sealing material 52 is temporarily fixed to the temporarily fixing projection 53 of the groove 51 of 40A / 40B, and the end plate sealing material 52 is wound by one round, and the other end is similarly temporarily fixed. By temporarily fixing with the 53, the end face plate sealing material 52 can be prevented from falling off until the divided sleeves 10 are covered, and the workability is good.

Further, when the fastener 21 is fixed, the band 6 is wound around the groove 23 between the ribs 22 of the sleeves 10 and 10 covering the cable connecting portion 1, and one of the hooks 11 A is attached to the tip of the bolt 14. The pin 15 of the piece (the one piece) 13A is engaged. Then, as shown by the dashed line in FIG. 2, the piece 15B on the large-diameter portion 18 side (the other piece) 13B is brought close to the large-diameter portion 18 and the pin 15 of the The bolt 14 is pivoted about the center, and the bolt 14 is placed in the tangential direction of the sleeves 10 so that the bridge 13B on the large-diameter portion 18 side is disposed in front of the other hook 11B. Band 6 until this time
When the band 6 is released after the piece 13B is placed in front of the hook 11B and the band 6 is separated, the round hole-shaped locking portion 12 of the hook 11B and the piece 1
The pin 15 of 3B is engaged. Next, by rotating the bolt 14 and relatively moving the bolt 14 and the tip-side piece 13A screwed into the male screw portion 19, the piece 13A and the piece on the large-diameter portion 18 side are moved. 13B and both hooks 11A and 11
A tightening force acts between B.

In this case, the bolt 14 is attached to the two
However, since the two pieces 13A and 13B are rotatably engaged with the hooks 11A and 11B by the pins 15, the pins 15 rotate as the band 6 is reduced in diameter. The bolts 14 are always arranged in the tangential direction of the sleeves 10 and 10 and a uniform pressing force is applied over the entire length of the sleeves 10 and 10 without applying a bending moment to the engagement portion with the hooks 11A and 11B. As a result, a highly reliable sealing structure can be obtained. In the fastening state, the band 6 is fitted into the groove 23 between the ribs 22 to restrict the movement in the left-right direction, and the band 6 presses the vicinity where the rigidity is increased by the rib 22. Therefore, the deformation of the sleeves 10 due to the band fastening is effectively prevented. Therefore, a high pressing force can be applied to the sleeves 10, and the sealing performance can be further improved.

Then, in this assembled state, the split sleeve 10
・ Between the 10 vertically split sides, the elliptical sleeve seal material 26 is compressed in its major axis direction, so a relatively small clamping force can generate a large contact pressure, and high airtightness can be achieved. Can be held.

Also, between the end plates 40A and 40B and the cable 30, the end plate
Since the cylindrical portions 42A and 40B provided on the 40A and 40B are formed in the length direction of the cable 30, the end face plate 40A when the cable sealing material 31 is interposed between the cylindrical portions 42A and 40B and the cable 30. ·Four
The posture such as 0B is stable, assembling is facilitated, and a seal portion can be formed within the length range, so that the sealing performance can be improved. In this case, the cable sealing material
Since the adhesive layer 31 is composed of the thin adhesive layers 31A and 31C and the hard elastic seal layer 31B, and the adhesive layers 31A and 31C are used only locally, the flow thereof is regulated. Further, the flow is reliably prevented by the stopper 32, and the sealing function can be maintained for a long time.

Furthermore, the cable gripping metal fitting 43 for fixing the jacket of the cable 30 is in a state in which the projection 46a is inserted into the jacket to ensure the fixation, and the pressing pin 45 moves the holding plate 46 in the radial direction. Therefore, the adjustment of the pressing force can be facilitated, and the occurrence of lateral deflection of the cable 30 can be reliably prevented, and the influence on the sealing function can be reduced. Of course, since the holding plate 46 is movable, it can be adapted to various cable diameters.

On the other hand, when releasing the fastening state, the pin 15 can be removed from the hooks 11A and 11B by loosening the bolt 14 and separating the two pieces 13A and 13B.

"Effects of the Invention" As is clear from the above description, the following effects can be obtained according to the present invention.

(I) Since the pieces are rotatably engaged with the hooks by the pins, the bolts can always be attached in the tangential direction of the sleeve when the two pieces are approached by the bolts, and the bending moment is applied to the hooks. Without acting, the sleeve is pressed uniformly over the entire circumference, and a highly reliable sealing structure can be secured.

(Ii) After the two bodies connected by the bolts are engaged with the hooks by the pins, they can be fastened by a simple operation of tightening with the bolts, so that the work can be performed quickly.

(Iii) Since it is not necessary to provide a protrusion such as a flange on the vertically divided cylindrical sleeve, for example, a limited space of a narrow laying path such as a common groove can be effectively used.

(Iv) By forming the sleeve sealing material into an elliptical cross section, a large contact pressure can be generated with a relatively small clamping force, and high airtightness can be maintained.

(V) In the closure of the second aspect, the mounting position of the end face plate and the like is stabilized by the cylindrical portion of the end face plate, and the assembling workability is improved, and a seal portion having a length in the range can be formed. Thus, the flow of the cable sealing material can be prevented by the stopper, and the sealing function can be maintained for a long time.

(Vi) In the closure according to the third aspect, the adhesive layer of the cable sealing material is locally used, and the hard elastic seal layer is provided so as to bear the entire strength. In addition to maintaining a high sealing function, the elastic sealing layer having good handleability can easily cope with various cable diameters.

(Vii) The closure according to claim 4 reliably prevents the cable from swaying or the like by the cable gripping metal,
The effect on the sealing function can be reduced to improve the reliability, and the pressing plate can be moved in the radial direction to easily adjust the pressing force and cope with various cable diameters.

(Viii) The closure according to the fifth aspect can cover the split sleeve in a state where both end portions of the end plate sealing material are temporarily fixed to the temporary fixing projections during the assembling work, and the workability is good.

(Ix) By forming the end face plate of plastic, a cable insertion hole of an arbitrary shape can be formed, and the whole can be reduced in weight.

(X) By arranging the ribs on the sleeve, the rigidity against internal pressure and external force is increased, deformation can be prevented, the sealing function can be effectively maintained, and the fasteners between the ribs of the sleeve can be maintained. By arranging the band, the displacement of the band is regulated, and the vicinity where the rigidity is increased by the rib is pressed, so that a high pressing force can be applied, and the sealing performance can be further improved. .

[Brief description of the drawings]

1 to 7 show an embodiment of the present invention.
1 is an overall perspective view with a part omitted, FIG. 2 is a perspective view of the vicinity of the fastener in FIG. 1, FIG. 3 is an exploded perspective view with a part of the fastener omitted, and FIG. FIG. 5 is an enlarged perspective view of the vicinity of the face plate, partially omitted, FIG.
FIG. 7 is a cross-sectional view showing a main part of a cable gripping metal, FIG. 7 is a cross-sectional view of a cable sealing material, FIG. 8 is a perspective view showing a conventional structure example, FIG. 9 is a cross-sectional view of FIG. FIG. 10 is a cross-sectional view showing another example of the conventional structure, and FIG. 11 is a cross-sectional view showing a modification of the cable sealing material according to the present invention. 1 ... Cable connection part, 6 ... Band, 10.10 ... Sleeve, 11A / 11B ... Hook, 12 ... Round hole shaped locking part, 13
A ・ 13B ………………………………………………………………………………………………………………………………………. , 21 ... fastener, 22 ... rib,
23 ... groove, 24 ... thick part, 25 ... groove, 26 ... sleeve sealing material, 30 ... cable, 31 ... cable sealing material,
31A first adhesive layer 31B elastic seal layer 31C
Second adhesive layer, 32: stopper, 40A / 40B: end plate,
40C: Cable insertion hole, 42A, 42B: Cylindrical part, 43: Cable holding bracket, 44: Mounting ring, 45: Pressing pin, 46: Holding plate, 51: Groove, 52: End plate Seal material, 53 ... Temporary fixing projection.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kunihiko Jimbo 1440, Mukurosaki, Sakura City, Chiba Prefecture Inside the Sakura Plant of Fujikura Electric Wire Co., Ltd. Inside the plant (72) Inventor Yasuhito Hinohara 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Masato Hirata 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Mitsuyoshi Katase 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Hiroshi Takahashi 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation ( 72) Inventor Kenji Kosugi Nippon Telegraph and Telephone Corporation

Claims (6)

(57) [Claims] 1. A cable connecting portion (1) is covered by a vertically divided split sleeve (10, 10), and a band (6) wound around an outer peripheral portion of the split sleeve is fixed by a fastener (21). A sleeve sealing material (26) sandwiched between the two split sleeves is interposed between the vertically split side portions of the split sleeve, and the fasteners are disposed at both ends of the band (6). Hooks (11A and 11B), pieces (13A and 13B) rotatably engaged by pins (15) along the width of the band on both hooks, and bolts ( 14), wherein the sleeve sealing material has an elliptical cross section, and is arranged and compressed in such a manner that its major axis is oriented in the direction of clamping by the two divided sleeves. Closure for cable connection. 2. A cable connecting portion (1) is covered by a vertically divided split sleeve (10, 10), and a band (6) wound around an outer peripheral portion of the split sleeve is a fastener (21).
And a pair of semicircular end plates (40A, 40B) made of plastic are fitted at both ends of the split sleeve in a state where the cable (30) is inserted therebetween. Hooks (11A and 11B) provided at both ends of the band (6), and pieces (13A and 13B) rotatably engaged with both hooks by pins (15) along the band width direction.
And bolts (14) that connect these pieces and move them apart
Further, on both the front and back surfaces of the end face plate, cylindrical portions (42A and 42B) projecting the cable insertion holes (41) to the outside and the inside of the split sleeve are protrudingly provided. An elastic cable sealing material (31) is provided in the gap between the inner peripheral portion and the cable inserted therein, and
A cable connection closure, characterized in that a stopper (32) for preventing flow of the cable sealing material is provided at an outer end of the cylindrical portion so as to protrude inward. 3. The cable sealing material according to claim 1, wherein an elastic seal layer is provided in a laminated state on a first adhesive layer which is in close contact with the outer peripheral surface of the cable, and a second adhesive seal layer is provided on the elastic seal layer.
The second adhesive layer is provided in close contact with the inner peripheral surface of the cylindrical portion of the end plate, and the elastic seal layer has a higher hardness than both the adhesive layers. Item 2. The cable connection closure according to item 2. 4. A cable holding member (43) for fixing a cable is provided on the end face plate, and the cable holding member is provided with a pressing pin (4) movable in a radial direction thereof.
5) are provided at intervals in the circumferential direction, and at the inner end of each pressing pin, a pressing plate (46) to be brought into contact with the jacket of the cable is disposed, and on the inner surface of the pressing plate 4. The cable connection closure according to claim 2, further comprising a projection (46a) into which the cable is hardly covered. 5. A groove (51) is provided along the circumferential direction on the outer peripheral portion of the end plate, and an end plate sealing material (52) for maintaining airtightness with the split sleeve is mounted in the groove. The end plate sealing material has a configuration in which an elastic body having adhesiveness is formed in a band shape, and a plurality of temporary fixing protrusions (53) for fitting both ends of the end plate to both sides of the groove, respectively. 5. The cable connection closure according to claim 2, wherein the cable connection closure is disposed. 6. A method according to claim 1, wherein a plurality of ribs (22) extending in a circumferential direction are provided at an outer peripheral portion of said sleeve at intervals in a longitudinal direction. Item 6. The cable connection closure according to item 2, 3, 4, or 5.