KR100873456B1 - Plug to seal the tube of cable - Google Patents

Abstract

The present invention is to provide a tight closure in the state in which the closure plug is fitted in the cable pipe, while at the same time to ensure a tight sealing and to reduce the production cost.

In order to achieve the above object, the present invention comprises a circular protruding tube on one side of the inner fixing plate, and the support plate on which the hook piece is formed on the circular protruding tube, and a generally thin water-expandable rubber and resin. The gap retaining ring and the water-expandable rubber are fitted, and the supporting plate and the outer fixing plate are formed on one side thereof, and then they are combined by bolts and nuts.

Description

PLUG TO SEAL THE TUBE OF CABLE}

1: perspective view of the present invention

2 is an exploded perspective view of the present invention

3 is a cross-sectional view of the present invention

4 is a cross-sectional view of another embodiment of the present invention

<Description of the symbols for the main parts of the drawings>

(10)-sealing stopper (20)-inner fixing plate

(21)-round protruding tube (22)-engagement hole

(30)-outer fixing plate (31)-engagement hole

(40)-Inner Support Plate (41)-Space

(42)-Body (43)-Jang

(50)-Outer Support Plate (51)-Body

(52)-Jang-hap (53)-Joiner

(60)-Inner Water Expandable Rubber (61)-Space

(70)-Outside water expandable rubber (71)-Space

(80)-Space Maintenance Ring (81)-Space

(90)-Long Bolt (91)-Nut

(92)-ring

The present invention relates to an improvement of a cable tube closure plug, and in particular, the sealing means and the locking means are doubled to make the sealing of the cable pipe perfect, and to prevent the phenomenon that the sealing plug is easily detached from the cable pipe. And also to reduce the production cost.

Regarding the cable tube closure cap, the applicant of the present invention has been registered with the Patent No. 543986 "cable tube closure cap".

In the patented cable tube closure cap, the sealing plug is formed by coupling water-expandable rubber between inner and outer fixing plates and connecting them with bolts and nuts, wherein the diameter between the fixing plate and the water-expandable rubber is equal to the inner diameter of the cable tube. It is to have a support plate which is equal to or larger than the disk-shaped main body, and has a plurality of engaging pieces which are inclined in the opposite direction of the insertion.

Another sealing plug is provided with a product having a circular protrusion on the inner fixing plate, inserting a support plate on which water-expandable rubber and a locking piece are formed, positioning the outer fixing plate, and fastening and fastening with bolts and nuts. have.

However, the products of the above-described configurations are supported by the locking plate is inserted into the cable tube and the inner wall is firmly supported, so that the stopper is separated by water pressure even before the water-expandable rubber is sufficiently inflated by the water while the sealing plug is fitted in the cable tube. It was effective to prevent the phenomenon, but the water-expandable rubber and the support plate constituted by the sealing stopper is composed of one part is not enough to meet the desired purpose, which is used in the sealing stopper The amount of the water-expandable rubber is high, causing a rise in manufacturing costs, such as a disadvantage.

The present invention in the construction of a cable tube closure plug to correct all the disadvantages of the prior art, while making a solid support in the state in which the closure plug is fitted in the cable pipe while at the same time to improve the sealability, reduce the production cost I would have to.

In order to achieve the above object, the present invention comprises a circular protruding tube on one side of the inner fixing plate, and the support plate on which the hook piece is formed on the circular protruding tube, and a generally thin water-expandable rubber and resin. The gap retaining ring and the water-expandable rubber are placed in order to support the plate and the outer fixing plate is formed on the one side and then they are combined by bolts and nuts.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a perspective view of a cable tube closure plug 10 to be provided in the present invention, Figure 2 is an exploded perspective view, the schematic configuration of the inner and outer support plate 30 between the inner and outer fixing plates (20, 30) ( 40) and the inner and outer water-expandable rubber (50) (60) and the gap retaining ring (80) is placed, and then they are fastened to the integral fastening bolts (90) and nuts (91).

Their construction and combination will be described in more detail.

One side of the inner fixing plate 20 protrudes a circular protrusion tube 21 having an outer diameter smaller than the inner diameter of the inner fixing plate 20 so that the engaging portion 23 is formed, and a coupling hole penetrating the center of the inner fixing plate 20. Drill through 22.

The inner support plate 40, the inner water-expandable rubber 60, the gap retaining ring 80 and the outer water-expandable rubber 70 are sequentially inserted into the circular protrusion tube 21 of the inner fixing plate 20, the circular protrusion tube (21) The phases cause them to bind.

In the configuration of the inner support plate 40 coupled to the circular protruding tube 21 is composed of a metal plate body 42 having a space portion 41 is formed in the center, the main body 42 is bent in the outward direction The engaging pieces 43 are comprised at equal intervals.

As for the inner side water-expandable rubber 60 fitted in the inner side of the inner support plate 40, the cylindrical space part 61 is comprised in the center.

The gap retaining ring 80 inserted into the front of the water-expandable rubber 60 is injection molded with synthetic resin, but the cylindrical space portion 81 is formed at the center thereof, and the outer number of the gap retaining ring 80 is fitted to the front of the gap retaining ring 80. The expandable rubber 70 also has a space 71 formed in the center thereof.

The width in which the inner and outer water-expandable rubbers 60 and 70 and the gap retaining ring 80 are assembled is equal to the width, that is, the length, of the circular protruding tube 21 formed in the inner fixing plate 20, and thus it is conventionally used. Compared with the water-expandable rubber, the use of the water-expandable rubber can be reduced by the width of the gap retaining ring 80, and the thickness of the water-expandable rubber can be further reduced.

As described above, the inner support plate 40 and the inner water expandable rubber 50, the gap retaining ring 80, and the outer water expandable rubber 70 are sequentially inserted into the circular protruding pipe 21 of the inner fixing plate 20. The long bolt 90 is inserted into the coupling hole 22 of the inner fixing plate 20 to allow the long bolt 90 to protrude forward through the inner fixing plate 20.

The long bolt 90 that penetrates the coupling hole 22 of the inner fixing plate 20 has a coupling hole of the outer support plate 50 in which the engaging piece 52 is bent in an outward direction to the edge of the main body 51 made of a metal plate. 53 to be fitted so that the outer support plate 50 is positioned in front of the outer water-expandable rubber 70, and at the same time, the coupling hole 31 of the outer fixing plate 30 is fitted in the outer support plate 50 front surface. The bolt 90 penetrating through the coupling hole 31 of the outer fixing plate 30 is coupled to the nut 91 formed with the ring 92 so that they are assembled in one piece.

In configuring the closure plug 10 to be provided in the present invention, the cross-sectional shape of the water-expandable rubber may be configured in various shapes such as a square, a circle, an oval, and the number of uses of the support plate is one or two. Can be used.

In addition, in the practice of the present invention, the support plate or the water-expandable rubber and the space retaining ring coupled to the circular protruding tube 21 of the inner fixing plate 20 may be used in combination of two or more.

In the water-expandable rubber used in the present invention can be used by mixing a non-combustible material in a certain ratio, in this case it can be expected not only to suppress the occurrence of fire, but also to suppress the fire diffusion in the event of a fire.

The present invention configured as described above is used as a function of sealing a cable tube inlet by being coupled to an inlet of a cable tube embedded in the basement, such as a sealing plug which has been used in the prior art, but a closure plug to be provided in the present invention. (10) has the following differences.

That is, the closure plug 10 provided in the present invention is dually composed of the inner and outer support plates 40 and 50 so that the water-expandable rubber is firmly held without being released even before the water-expandable rubber is sufficiently inflated in the cable tube. Done.

In other words, the engaging pieces 43 and 52 formed at the edges of the main body 42 and 51 of the inner and outer support plates 40 and 50 support the sealing plug 10 for double sealing in the inner side of the cable tube. The holding force is doubled than that of the sealing cap that was there, so the bonding force is excellent.

In addition, it is possible to expect an excellent leakage blocking effect than the conventional closure closure.

That is, in the present invention, since the inner and outer water-expandable rubbers 60 and 70 overlap each other with the gap retaining ring 80 interposed therebetween, the sealability is excellent and the inner and outer water-expandable rubbers 60 and 70 are provided. Since the space that can be expanded toward the gap retaining ring 80 in the coupled state is secured, it is possible to double the degree of expansion as compared to the conventional, thereby improving the sealing property.

In addition, compared to the conventional closure cap provided, it is possible to reduce the amount of water-expandable rubber can reduce the manufacturing cost.

In other words, the size of the water-expandable rubber that has been used in the past has been used in the combined size of the inner and outer water-expandable rubber 60, 70 and the gap retaining ring 80 used in the present invention, but in the present invention the inner and outer water-expandable rubber Divided into (60) and (70), the gap retaining ring 80 made of synthetic resin is sandwiched therebetween, so that the amount of water-expandable rubber that is expensive as much as the volume of the gap retaining ring 80 can be reduced, thereby reducing the production cost. It is.

When forming a product by adding a non-flammable material in the production of water-expandable rubber used in the present invention can be expected to suppress the occurrence of fire and prevent the diffusion.

When it is desired to separate it from the cable tube during use of the sealing plug 10 of the present invention, it can be easily separated using the ring 92 of the nut 91 formed on the sealing plug 10 front as in the prior art.

As described above, the cable closure cap to be provided in the present invention comprises a support plate and water-expandable rubber which are constituted by the closure cap, but is sealed in the cable tube by allowing the gap retaining ring to be positioned between the water-expandable rubber. The coupling means of the stopper is not only firm, but also has the effect of being excellent in sealing means and reducing manufacturing costs.

Claims (1)

In constructing a cable tube closure plug, a circular protrusion tube 21 smaller than the outer diameter of the locking portion 23 is formed on the front surface of the locking portion 23 constituting the inner fixing plate 20, and the circular protrusion tube 21 is formed. ) The inner support plate 40 with the locking piece 43 protruding from the main body 42 formed on the outer surface of the inner space 41 is formed in a ring shape, and the space 61 is formed on the front surface of the inner support plate 40. The inner water-expandable rubber 60, the ring-shaped spacing ring 80 in which the space portion 81 is formed, and the ring-shaped outer water-expandable rubber 70 in which the space portion 71 is formed are installed in this order. In the above state, the long bolt 90 is inserted into the coupling hole 22 formed in the center of the inner fixing plate 20 so as to protrude to the front of the circular protrusion tube 21, and the long bolt penetrates the circular protrusion tube 21 ( 90) to the outer support plate 50 having the locking piece 52 protruding from the rim of the main body 51 so as to be located on the front surface of the circular protrusion tube 21 of the inner fixing plate 20, Insert the outer fixing plate 30 to the front side of the side support plate 50 and then fasten and fasten the nut 91 to the long bolt 90 through the coupling hole 31 of the outer fixing plate 30 Sealing plug.

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