KR100502778B1 - Splice closure for communication cable - Google Patents

Abstract

The present invention relates to a junction box for a communication cable, in particular, in the case of sealing the cable entry and exit of the junction box for a communication cable, except for the conventional method of sealing using a sealing tape, end caps (endcap) and a separate plug ( The present invention relates to a connection box for a communication cable in which a cable entry and exit is isolated from an external environment using a plug. Since the cable entry port is sealed by using an end plug and a plug, the junction box of the present invention is economical because an assembly part such as a bolt for fastening the plug and a plug is not required. In addition, by eliminating the use of sealing tape, the junction box installation and maintenance work is simple, and the sealing of the junction box is uniformly guaranteed regardless of the operator's function.

Description

Junction box for communication cable {SPLICE CLOSURE FOR COMMUNICATION CABLE}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to connection enclosures for communication cables, and more particularly to end plugs and plugs used to seal the cable entry and exit ports of connection enclosures which protect the connection points of communication cables from the external environment.

Communication lines using cables generate connection points every certain length. A splice closure is a device that completely protects the connection points from the external environment (humidity, insects, vibration, tension, etc.).

There are many types of conventional junction box structures, but the method of sealing cable entry and exit ports of these junction boxes is a structure in which a sticky and adhesive sealing tape is wound around a cable to be pulled in and out and sealed using bolts. It is a structure which forms a stopper part by using a polyurethane grommet.

However, the structure of sealing the cable inlet and outlet using the sealing tape of the conventional junction box structure as described above is very poor workability when installing the junction box or maintenance of the junction box due to the sticky characteristics of the sealing tape. Since a certain amount of sealing tape should be wound around the cable to be drawn out, there is a problem that the sealing property of the cable inlet and outlet is changed according to the function of the operator. In addition, such a structure has a problem such that when used for a long time is greatly affected by the external environment, in particular temperature, the reliability of the sealing is inferior. In addition, the structure of forming a stopper using polyurethane gromet is mainly used for compound injection type junction box, which has only a function of preventing the compound injected into the junction box from leaking out. There was a problem that the sealing of the inlet and outlet of the part and the cable could not be maintained.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and improves sealability and workability by excluding a conventional method using a sticky sealing tape when sealing a cable inlet and outlet. The purpose is to provide a junction box that can be produced at a cost.

The present invention for achieving the above object is to seal the cable inlet and outlet of the connection box for the communication cable, the end plug is mounted to the cable inlet and outlet of the connection box is formed at least one cable mounting hole; And assembling the plug that can be accommodated in the cable mounting hole of the end plug to the junction box, and then assembling the junction box to seal the cable entry / exit and the plug portion of the junction box.

The present invention provides an electronic device comprising: an end plug mounted at a cable inlet and outlet of a junction box used to seal a cable inlet and outlet of a junction box for protecting a junction point of a communication cable from an external environment; And a plug that can be accommodated in the cable mounting hole of the end plug.

The splice enclosure of the present invention is a polyurethane grommet that is elastic and hard by itself using an elastic material having a high elasticity when sealing the cable inlet, that is, a rubber end cap, and thus cannot maintain the sealing of the cable inlet alone. Complement the disadvantages of the conventional structure using, it is possible to ensure the self-tightness and maintain the sealability without a separate compound injection. In addition, by inserting the cable to be pulled out into a plug made of an elastic material having a high elasticity, it is possible to eliminate the use of the sticky sealing tape and to ensure the sealing of the cable entry and exit. This improves workability during installation of the junction box or maintenance of the connection point, and provides uniform cable entry and exit sealing regardless of the operator's function during construction. In addition, the present invention using the end stopper and the plug of the rubber material having a high elasticity is not significantly influenced by the external environment, especially the temperature even when used for a long time, so the reliability of the sealing is ensured for a long time.

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

1 is an exploded perspective view of a communication cable connection box of the present invention, Figure 2 is a perspective view of an end plug and a plug of the communication cable connection box according to the present invention, Figure 3 is a communication cable connection box according to the present invention 4 is a perspective view of an end plug used to seal a cable entry and exit, and FIG. 4 is a perspective view of a plug used to seal the cable entry and exit of a connection box for a communication cable according to the present invention.

The junction box for a communication cable of the present invention includes a bolt (8) and a junction box (1) for fastening upper and lower junction enclosures (1), upper and lower junction enclosures (1) for protecting components mounted therein from an external environment. Side gasket (7) for sealing the junction of the joint), end plug (4) to be mounted and coupled to the cable inlet and outlet 16 of the junction box (1), plug (5) for sealing the end plug (4) do.

A plurality of cable inlets and outlets 16 are formed in the junction box 1 so that the cable 15 can be easily pulled in and out, and the bolt grooves can couple the upper and lower junction boxes at the flange face of the junction box 1. It is formed at regular intervals. In addition, the junction box 1 is provided with a groove of an appropriate size in the flange so that the side gasket 7 can be inserted into the junction box contact portion where the upper and lower junction boxes contact each other, and the cable entry and exit port of the junction box 1 is connected. An end plug seating groove is formed in a space of a suitable size so that the end plug 4 can be seated at 16.

The end plug 4 seated at the cable entry and exit 16 of the junction box 1 is formed with one or more cable holes 17 for entry and exit of the cable 15. One or more inner protruding ribs 12 are formed in the cable ball 17 to facilitate alignment of the plugs 5 inserted therein and to improve sealing. In addition, one or more outer protruding ribs 11 and grooves are formed at the outer circumference of the end plug 4 to ensure the airtightness with the cable inlet and outlet 16 of the junction box 1 and the junction box side gasket 7. do.

The incoming and outgoing cable 15 is inserted into the cable hole 17 of the end plug 4 while being inserted into the plug 5 to seal the cable 15 and the junction box 1, and the plug 5 is connected to the cable. Depending on the diameter of (15) can be divided into several types. The plug groove 13 formed around the outer circumference of the plug 5 is tightly coupled with the inner protruding rib 12 of the end plug 4 so that the plug 4 is well aligned, the end plug 4 and the plug 5 ) Improves the confidentiality.

Although the present invention has been described with reference to the accompanying drawings, those skilled in the art will be able to make or use this junction box with appropriate modifications without departing from the spirit of the invention.

The present invention can secure the sealing portion of the connection by mounting and assembling the end plug and plug using a highly elastic elastic material, that is, a rubber material, to the cable inlet and outlet of the junction box without using a separate injection molding. The use of this inconvenient sealing tape can be eliminated, and the sealing property of a cable entrance and exit can be ensured. The communication box for the communication cable of the present invention can be easily installed by anyone having ordinary skill in the art, it is possible to ensure uniform sealing through this construction. In addition, the cable inlet and outlet are sealed using a plug to ensure the sealability of the inlet and outlet regardless of external environment, especially temperature change, and when the cable to be drawn in or out needs to be replaced or the cable re-branching is required. The plug can be simply replaced and reused, improving workability and reducing costs.

1 is an exploded perspective view of a connection box for a communication cable of the present invention.

Figure 2 is a perspective view of the end plug and plug of the junction box for a communication cable according to the present invention.

3 is a perspective view of an end plug used to seal the cable entry and exit of a junction box for a communication cable according to the invention;

Figure 4 is a perspective view of a plug used to seal the cable entry and exit of the junction box for a communication cable according to the present invention.

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

1: junction box

2 tray

3: bracket

4: end cap

5: plug

6: washer

7: side gasket

8: bolt

9: bushing washer

10: Bushing Nut

11: outer protruding rib

12: medial protrusion rib

13: plug groove

14: cable mounting hole

15: cable

16: Cable entry exit

17: cable ball

Claims (4)

In the communication box for the communication cable, An end plug mounted at a cable entry / exit of the connection enclosure and having at least one cable hole formed therein and at least one protruding rib formed at an inner circumference of each cable hole; The plug is received in the corresponding cable hole of the end plug and the cable mounting hole is formed in the center, the plug having at least one groove formed on the outer periphery to be coupled to the corresponding protrusion rib A junction box comprising a. The junction box according to claim 1, wherein the end plug is made of an elastic material. The junction box according to claim 1, wherein at least one protruding rib is formed around an outer circumference of the end plug. The junction box according to claim 1, wherein the plug is made of an elastic material.