JP2517739B2 - How to connect the seal member of the cable connection part - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for connecting a cable connecting portion sealing member such as a communication cable.

“Prior Art” Conventionally, since the connection portion of the communication cable is required to be waterproof, as shown in FIG.
Is covered with a cylindrical case 3 for protecting and sealing the connecting portion 2. The case 3 includes a pair of end plates 4 composed of a half case 3a, 3b and a half body 4a, 4b, a sealing washer 5, and a seal member (not shown) wound around the outer circumference of the communication cable 1. , A sealing member 6 wound around the outer circumference of the end plate 4.

However, the seal member wound around the communication cable 1 and the seal member 6 wound around the end face plate 4 are made of an adhesive material such as unvulcanized rubber or semi-vulcanized rubber,
There is no problem because the joint portion of the seal member 6 itself is self-adhesive, but when the connection portion of the communication cable 1 is disassembled in order to change the connection of the communication cable 1, the case halves 3a and 3b and the ends are closed. The seal member 6 on the outer periphery of the face plate 4, the halves 4a, 4b of the end face plate 4 and the seal member on the outer periphery of the communication cable 1 are firmly adhered to each other, and the case 3 and the end face plate 4 are attached from these seal members. There was a problem that it was very difficult to remove.

Therefore, in order to improve the disassembly property of the connection portion of the communication cable 1, the seal member 6 is changed from an adhesive material such as unvulcanized rubber or semi-vulcanized rubber to rubber packing.

[Problems to be Solved by the Invention] However, in order to form a seal member made of a rubber packing, the case 3 is made up of case halves 3a and 3b in the shape of a cylinder, and the end face plate 4 is made up of the half halves 4a, Since it consists of 4b, it is necessary to wrap the stick-shaped rubber packing around the seal part to form a ring shape at the time of assembly, and to bond both ends of this seal member with an adhesive. Because the adhesiveness to the use of is not reliable,
A rubber-based adhesive or silicone sealant is used, but this requires a long curing time so that the construction time is long and the sealing member must be fixed with a jig in order to maintain the adhesive condition. there were.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of connecting a seal member for a communication cable connecting portion, which solves the above problems in connecting the seal material of the conventional connecting portion of the communication cable.

"Means for Solving Problems" The present invention has the following configuration in order to achieve the above object. That is, a seal member is formed by providing a recess on the outer surface of the rod-shaped rubber packing, the seal member is wound around the outer periphery of the seal portion, and both ends of the seal member are adhered with an adhesive to affect the seal of the seal portion. A connecting and fixing member that is not fitted into the recess, connects both ends of the sealing member with the connecting and fixing member, and fixes both ends of the sealing member, and presses the sealing member with a case that covers the connecting portion of the cable. The cable connection is sealed.

"Operation" Both ends of the seal member wound around the outer periphery of the seal portion are bonded with an adhesive and are fixedly connected by the connecting and fixing member. Therefore, the fixed state is maintained until the adhesive on both ends of the seal member is cured, and after the seal member is cured, both ends of the seal member are securely fixed and both end portions of the seal member are reinforced by the connecting and fixing member. It Also, since the seal member is made of rubber packing, the cable connection part can be easily disassembled, and the seal member can be reused.
The connection portion of the cable can be assembled without waiting for the adhesive to harden, and the assembly time can be shortened.

"Embodiment" An embodiment of the method of the present invention will be described below with reference to FIGS. In this embodiment, the same parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted.

Reference numeral 11 in FIG. 1 denotes a rod-shaped seal member used for carrying out the method of the present invention. The outer surface of one side of this seal member 11 is provided with a first recess 12 extending in the length direction of the seal member 11. A second recess 13 extending in the length direction of the seal member 11 is formed on the outer surface of the seal member 11 opposite to the surface on which the first recess 12 is formed. Side walls of the first recess 12 and the second recess 13 are formed in a tapered shape as shown in FIG. The first recess 12 and the second recess 13 are respectively seal portions, that is,
It is necessary not to affect the sealing of the outer circumference of the communication cable 1, the inner circumference and the outer circumference of the end plate 4, the inner circumference of the end of the case 3, the sealing washer 5, etc., that is, the sealing part can be sufficiently sealed. It is formed leaving the sealing surface. Therefore, the seal member 11 has a substantially H-shaped cross section.

To seal the connection part of the communication cable 1, first
As shown in the drawing, the sealing washers 5, 5 are fitted to predetermined positions of the communication cable 1 so as to face each other with a space therebetween, and a sealing member 11 made of a rod-shaped rubber packing is provided on the outer periphery of the communication cable 1 between the sealing washers 5, 5. The seal member 11 is wound with the second recess 13 facing each other, and both end faces 11a and 11b thereof are adhered with an adhesive. For this adhesive, a rubber-based adhesive or a silicone sealant is used, which can surely maintain the adhesive strength even after long-term use. Since these adhesives take a long time to cure, the state where both ends of the seal member 11 are adhered by the adhesive must be maintained in a fixed state until the adhesive cures.

In order to fix both ends of the seal member 11, as shown in FIG.
From both sides, both ends of the seal member 11 are connected and fixed by a connecting and fixing member 14 made of a rigid body. The connecting and fixing member 14 is one in which the pins 14b, 14b are integrally provided on one surface of the rectangular plate 14a at right angles to this surface and at both ends of the rectangular plate 14a. The tips of the pins 14b, 14b are formed in an arrow shape.

When fixing both ends of the seal member 11,
With both ends of the seal member 11 adhered by the adhesive,
Insert the pins 14b, 14b into the first recesses 12 on both ends of the
The rectangular plate 14a is brought into contact with the bottom of the first recess 12. At this time, the surface of the rectangular plate 14a opposite to the pins 14b, 14b enters the bottom surface side of the first recess 12 with a predetermined depth from the outer peripheral surface of the seal member 11 so as not to prevent the deformation of the seal member 11 after the adhesive is hardened. It is like this. As described above, both ends of the seal member 11 can be reliably connected and fixed. Since the connecting and fixing member 14 has the tips of the pins 14b, 14b formed in an arrow shape, the connecting and fixing member 14 does not come off from the seal member 11 and firmly fixes the seal member 11.

After the seal member 11 is cured, the adhesive reliably fixes both ends of the seal member 11 and the connecting and fixing member 14 reinforces the adhesive portions at both ends of the seal member 11.

Next, the sealing washers 5 and 5 are pressed against both end faces of the seal member 11 so as to sandwich the seal member 11, and the half members 4b and 4a are arranged above and below the seal member 11 and the sealing washers 5 and 5 in FIG. Then, the seal member 11 and the sealing washers 5, 5 are pressed and sandwiched by these half-divided bodies 4b, 4a,
After inserting the bolts 15 and 15 into 4a and 4b, nuts 16 and 16 are screwed into these bolts 15 and 15, and these bolts 15 and 15, nut 16 and
The half halves 4b and 4a are fastened and fixed by means of 16.

Next, a rod-shaped seal member 17 different from the seal member 11 is wound around the annular groove 4c formed on the outer circumference of the end plate 4 composed of the half-split bodies 4b and 4a, and both ends thereof are bonded with the same adhesive as the adhesive. To glue.

After that, the seal member 17 is connected and fixed by the connecting and fixing member 18 having the same structure as the connecting and fixing member 14. Seal member 17
Has the same structure as the seal member 11, and the seal member 11
Although the size is different from that of the seal member 17
The method of fixing the both ends is the same as the method of fixing the seal member 11, and the description thereof will be omitted.

Next, the case halves 3b, 3a of the case 3 are arranged above and below the end plate 4 in FIG. 3, and the inner peripheral surfaces of the ends of the case halves 3b, 3a are brought into contact with the outer peripheral surface of the seal member 17, and Body 3b, 3
The seal member 17 is pressed by a to cover the communication cable 1 and the end face plate 4, and the bolts 19 and 19 are inserted into the flanges provided on both sides of the case halves 3b and 3a in the width direction.
Screw a nut (not shown) into 19 and insert these bolts 19,1
Tighten and fix the case halves 3b, 3a with 9 and nuts.

Since the seal members 11 and 17 are fixed by the connecting and fixing members 14 and 18, the assembling work of these seal members 11 and 17 should be performed without waiting for the curing of the adhesive at the both end adhesive portions of the seal members 11 and 17. It is possible to reduce the assembly time.

When disassembling the case 3, the case 3 may be disassembled in the reverse order of assembling.

When the seal members 11 and 17 are wound around the communication cable 1 or the end plate 4, when the seal member 11 is pressed by the half-split bodies 4b and 4a, and when the seal member 17 is pressed by the case halves 3b and 3a, Since the seal members 11 and 17 are provided with the first concave portion 12 and the second concave portion 13 in the seal members 11 and 17, they are easily deformed to ensure the sealing property.

When disassembling Case 3, the case half
When separating the end plates 4 and 3a, 3b, the seal member 17
Since they are made of rubber packing, they can be easily separated from each other, and the seal member 11 is made of rubber packing when the end plate 4 and the seal member 11 are separated and when the communication cable 1 and the seal member 11 are separated. Therefore, these can be easily separated.

Further, since the seal members 11 and 17 are made of rubber packing, the seal members 11 and 17 can be reused.

Incidentally, in the first embodiment, the seal members 11, 1
A seal member is provided on the communication cable 1 and the end face plate 4 so that the first recess 12 and the second recess 13 of 7 are coaxial with the communication cable 1.
11 and 17 are wound, but the invention is not limited to this. The sealing washer 5 and the first recess 12 and the second recess of the seal member 11 are not limited to this.
The recesses 13 may be opposed to each other, and the first recess 12 and the second recess 13 of the seal member 17 may be opposed to the side walls of the groove on the outer periphery of the end face plate 4. Further, in this case, as shown in FIG. 4 and FIG. 5, the pins 21a, 21a of the connecting and fixing member 21 are made longer, and the tip side of the pins 21a, 21a protruding into the second recess 13 is formed. Bend the parts and connect both ends of the sealing members 11 and 17 to the connecting and fixing member 21.
May be securely fixed by.

In addition, in the first embodiment, the seal members 11, 1
The respective ends of the seal members 11 and 17 are connected and fixed only by inserting the pins of the connecting and fixing member 14 or the connecting and fixing member 18 into the respective ends of 7. However, the present invention is not limited to this, and for example, as shown in FIG. As described above, in the second recesses 13 of the seal members 11 and 17, the stopper members 33, in which the pin receivers 32 and 32 formed of columnar bodies having a slight elasticity are provided at both ends of the stopper plate 31, are attached to the seal members 11 and 17, respectively. The pin receivers 32, 32 are inserted into the respective second recesses 13 of the above, and the stopper plate 31 is fitted so as to come into contact with the bottom surface of the second recess 13, while the other of the first recesses 12 of the seal members 11, 17 is inserted into the first recesses 12. Connection fixing member 14 or connection fixing member of the first embodiment
Connect and fix the same fixing members 14 and 18 as 18
The pins 4 and 18 may be inserted and inserted into the pin receivers 32 and 32 of the stopper member 33.

[Advantages of the Invention] According to the method of the present invention, a recess is provided on the outer surface of a rod-shaped rubber packing to form a sealing member, the sealing member is wound around the outer periphery of the sealing portion, and both ends of the sealing member are bonded with an adhesive. Then, a connecting and fixing member that does not affect the seal of the sealing portion is fitted into the recess, and both ends of the sealing member are connected by the connecting and fixing member to fix both ends of the sealing member, and the cable connecting portion is fixed. Since the sealing member is pressed by the covering case to seal the connecting portion of the cable, both ends of the rod-shaped rubber packing wound around the outer periphery of the sealing portion are adhered with an adhesive, and both end portions are connected and fixed. By connecting and fixing with, the both ends of the seal member can be maintained in a fixed state until the adhesive is cured, and after the seal member is cured, the both ends of the seal member are surely secured. It can be adhered and withstand long-term use, the connecting and fixing part of the sealing member can be reinforced by the connecting and fixing member, and since the sealing member is made of rubber packing, the cable connecting part can be easily disassembled. It becomes possible to reuse the members, and it is possible to assemble the connecting portion of the cable without waiting for the adhesive to harden,
The assembly time can be shortened.

[Brief description of drawings]

1 to 3 are perspective views of essential parts showing an embodiment of the method of the present invention, FIG. 2 is a front view of an end plate thereof, and FIG. 3 is a view taken along line III-III of FIG. Sectional views, FIGS. 4 and 5
FIG. 6 is a perspective view of a main part showing another embodiment of the present invention, FIGS. 6 and 7 are perspective views of a main part showing still another embodiment of the present invention, and FIG. 8 is a conventional example. It is an exploded perspective view of a case. 1 ... communication cable, 3 ... case, 4 ... end plate, 5
...... Ceiling washers, 11,17 …… Seal members, 12…
... first recess, 13 ... second recess, 14,18 ... connecting and fixing member.

Claims (1)

(57) [Claims] 1. A seal member (11, 17) is formed by providing a recess on the outer surface of a rod-shaped rubber packing, the seal member is wound around the outer periphery of the seal portion, and both ends of the seal member are bonded with an adhesive, A connecting and fixing member (14, 18, 21) that does not affect the sealing of the seal portion is fitted into the recess, and both ends of the sealing member are connected by the connecting and fixing member to fix both ends of the sealing member. (1) A method for connecting a cable connecting portion sealing member, which comprises pressing the sealing member with a case (3) covering the connecting portion to seal the connecting portion of the cable.