KR200161877Y1 - Housing of roll type optical connector case - Google Patents

Abstract

The present invention relates to an optical splice enclosure, and more particularly, to an enclosure of an ear-type optical splice enclosure having a structure for increasing flexibility in the enclosure to facilitate the storage and assembly of the optical splice enclosure. It is connected to the optical fiber protective support plate 10 on a circular plate formed with a cylindrical enclosure 20a having a fastening means which is cut in the longitudinal direction and an optical connector for connecting an optical fiber therein, and an insertion groove 32 along an outer circumference. In the optical connection enclosure consisting of an end cap 30, which is a cable inlet 36 is formed to guide the optical cable containing the optical fiber is coupled to both ends of the enclosure (20a) by means of fixing, the enclosure (20a) In this flattened form, the fastening means are provided at both end portions, and bent grooves 25a and 25b having elasticity in the form of slots arranged at predetermined intervals are formed on both surfaces thereof. It is composed of an enclosure 20b which is rolled up in a circular manner and fixed by the fastening means. The enclosure can be stacked in turn by the injection molding in a plane, so that the enclosure can be stored in a convenient manner, and when the external lateral pressure is applied or impacted. When this is applied, both ends can obtain the effect of preventing both ends from twisting or shrinking.

Description

Enclosure of horse-type optical junction box

The present invention relates to an optical splice enclosure, and more particularly, to an enclosure of a splice-type optical splice enclosure having a structure for increasing flexibility in the enclosure to facilitate the storage and assembly process of the optical splice enclosure.

In general, optical communication is to exchange information by transmitting light, optical fiber made of glass fiber, that is, optical cable is a medium, and can transmit tens of thousands of times of information compared to current electric communication by coaxial cable. In addition, since the transmission state of information is good because it is not influenced by radio waves from the outside and electromagnetic, it is widely used in the communication field, and its use range is gradually expanding to other fields.

These cables can be buried above the ground and underground, or they can be installed undersea to connect continents and continents, land and islands. In this case, the optical cable is most preferably installed integrally without being connected to the starting point and the end point, but the optical cable is installed at a distance of several hundred kilometers or more. Therefore, it is important to minimize the loss of the optical signal when connecting the optical cable and to maintain the reliability of the connection even under severe natural adverse conditions. In particular, when the optical cable is installed in the air, tension due to the weight of the cable is generated, and it is designed so that rainwater does not penetrate. In view of this aspect, currently employed optical cable connecting means employ a mechanism commonly referred to as an enclosure.

The junction box is located on both sides of the end cap (End Cap) for hermetically passing the end of the optical cable, the enclosure enclosing the end cap to hermetically, and the optical fiber protection for connecting multiple strands of optical fiber forming the optical cable inside the enclosure Consists of a support plate, the end cap is connected to one or more clamping bars that bind each other to withstand the tensile force of the optical cable to the tensile force.

In addition, the enclosure has one side of the cylinder cut in the longitudinal direction to seal the connecting portion of the optical fiber, and forms a flange at the cutout so that the inside is opened when the optical fiber is connected, and the flange is connected after the connection is completed. Surround the inner enclosure. Therefore, the enclosure does not penetrate moisture or rainwater.

Referring to FIG. 1, FIG. 1 is an exploded perspective view illustrating an assembled state of an optical splicing enclosure according to the related art, and the optical splicing enclosure is an enclosure 20a in which an optical fiber protective support plate 10 for connecting optical fibers is installed. ) And an end cap 30 coupled to the inner surface end of the enclosure for hermetically sealing the enclosure 20a.

The enclosure 20a has a cylindrical shape cut in the longitudinal direction, and both inner diameters of the cylinder are formed with sealing protrusions fitted into the grooves of the end cap 30. The cut end is formed with a flange 22, which is bent toward each other in a "c" shape, and a gasket groove 23 is formed on the contact surface of the flange 22 so that the gasket 24 is fitted. And the end of the flange 22 is formed with a locking projection to prevent the separation of the elastic member 26 and the support core 28, respectively. In addition, both flanges 22 are provided with an elastic member 26 and a support core 28 for hermetically sealing the flange 22 when the enclosure 20a is sealed.

The elastic member 26 is formed long in the longitudinal direction of the flange 22, the surface in contact with the flange 22 is a flat surface and the opposite side has a shape called full belly. That is, the thickness becomes thicker from both ends to the middle part. In addition, the support core 28 is a plate shape formed long in the longitudinal direction of the flange 22, and provided with fastening means at both ends, by pressing the outer surface of the elastic member 26 interposed on the outer surface of the flange 22 The flange 22 is hermetically sealed.

The fastening means has both ends of the support core (28) is thin and the tension piece 29 is formed smoothly bent, the outer surface of the tension piece 29 is formed integrally with a bracket formed with a screw hole (29a) have. And the bracket of this tension piece 29 is provided with the bolt 40 and the nut 42 which are inserted into the screw hole 29a and pull the bracket by screw tightening force.

End cap 30 is formed in the outer periphery of the insertion groove 32, the outer surface is formed cable inlet 36 through which the optical cable passes, both end caps 30 to withstand the tension of the optical cable firmly It is connected by a clamping bar so that

Looking at the operation of the enclosure of the optical junction box having such a structure as follows.

First, the elastic members 26 are brought into close contact with the outer surfaces of both flanges 22 of the enclosure 20a, and then the support iron cores 28 are brought into close contact therewith. Then, the bolt 40 is inserted into the screw hole 29a of the bracket formed in the tension piece 29 on both sides of the supporting support core 28, and then the nut 42 is fastened. The distance between the brackets is closer by the fastening of the nut 42. The tension piece 29 is pulled by this action, and then both support iron cores 28 are pulled out, and the tension force is generated by the elastic member 26. It acts as a force to straighten the support iron core 28 is bent along the curved surface. Therefore, the elastic member 26 is pressed to tighten both ends of the flange 22. At this time, both ends of the support iron core 28 acts as the tightening force of the flange 22, but the middle portion of the elastic member 26 is formed to be doubled so that the tensile force generated is the middle of the elastic member 26. The area is pressed with the greatest force. This results in a result that the force for pressing the flange 22 acts evenly so that the flange 22 is tightly sealed as a whole. In addition, as the gasket 24 interposed between the flanges 22 is crimped in the gasket groove 23 by the support core 28, the flanges 22 are more tightly sealed.

However, the enclosure 20a is inconvenient to store and manufacture as it is molded into a cylindrical shape at the time of manufacture. In addition, when the optical fiber is connected to the optical fiber protection plate, the optical connection enclosure is assembled, and when it is installed in the air or underground, when the impact is applied to the surface of the enclosure, it impacts the binding part of the optical fiber and increases the optical loss. Falling problem will occur.

Therefore, the present invention has been devised to solve the above-mentioned problem. The purpose of the present invention is to provide a bending groove having elastic force on the surface of the enclosure so that the enclosure can be sealed by processing the enclosure in a flat state, and thus the assembly of the optical connection enclosure is easy to assemble and maintain, and is strong against impact. To provide.

1 is an exploded perspective view illustrating an assembled state of an optical connection box according to the related art;

Figure 2 is a perspective view showing the inner surface to expand the enclosure of the optical connection enclosure according to the present invention,

3 is a perspective view showing an outer surface of the enclosure of the optical connection enclosure according to the present invention;

Figure 4 is a perspective view showing an assembled state of another optical junction box in the present invention.

Explanation of symbols on the main parts of the drawings

10: fiber protective plate 20a, 20b: enclosure

22: flange 23: gasket groove

24: gasket 25a, 25b: bending groove

26: elastic member 28: support iron core

30: end cap 32: insertion groove

36: cable entry

Means for carrying out the object of the present invention is one side is cut in the longitudinal direction is provided with a fastening means and the inside of the cylindrical enclosure surrounding the inner box for connecting the optical fiber, and the inner plate on the inner plate in the insertion groove formed along the outer periphery An optical cable inlet is formed through which an optical cable including an optical fiber to be connected is formed, and an optical connection enclosure comprising an end cap coupled to fixing means at both ends of the enclosure, wherein the enclosure is flattened and the interior of the enclosure is opened through the enclosure. Fastening means are provided at end portions which are in contact with each other when surrounded by a circumference, and an inner surface thereof may be achieved by a plurality of V-shaped bent grooves spaced at regular intervals in the longitudinal direction.

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

2 is a perspective view showing the inner surface of the optical junction box according to the present invention by developing the outer box, the enclosure (20b) is made in the form of a rectangular plate during injection molding c-shaped flange 22 protruding outward at both ends Is provided. Supporting protrusions protrude from the ends of both flanges 22, and the other end is formed with a gasket groove 23 bent inwardly. And the surface of the plate is formed with a bent groove 25a, which is a V-shaped slot in the longitudinal direction parallel to the flange 22, the square groove is formed on the surface forming the bent groove 25a is constant have. In addition, both ends of the enclosure (20b) is formed with a milling protrusion 21, the end cap groove (27) recessed inwardly is formed between the sealing projection 21 and the bending groove (25a). When the enclosure 20b is rolled into a roll shape, the openings of the bent groove 25a are closely attached to each other to provide a repulsive force to maintain a constant diameter. That is, when the openings of the V-shaped bending grooves 25a close to each other in close contact with each other, the repelling force is generated so that they are no longer curled even if they are rolled in rolls. Therefore, when the openings of the bent groove abut each other, the diameter of the enclosure 20b, which is rolled in roll form, is made to be the same diameter as that of the end cap. As a result, the rolled enclosure has an internal stress to spread to the plate, which increases the resistance to lateral pressure.

FIG. 3 is a perspective view illustrating an outer surface of the optical connection enclosure according to the present invention. The outer surface of the enclosure 20b has a V-shaped bending groove symmetrically with respect to the bending groove 25a shown in FIG. 2. 25b) is formed in the longitudinal direction.

Figure 4 is a perspective view showing a state in which the enclosure is coupled to the optical connection box according to the present invention, as shown in Figure 1 by inserting the optical cable guided into the cable inlet 36 of the end cap 30, the optical fiber protective support plate After the optical fiber is connected by the (10), the outer side of the optical fiber protective support plate 10 is coupled to the insertion groove 32 of the end cap 30 coupled to both sides of the circular silicon gasket to the end cap groove 27 of the enclosure Fix the end cap 30. In addition, the sealing projection 21 is positioned outside the end cap 30 so that the end cap 30 is not separated, thereby making the enclosure into a roll shape. At this time, the bent groove 25a of the inner surface of the enclosure 20b has a V-shaped upper portion and the flange 22 is contacted when the bent groove 25b formed on the outer surface is opened to both sides. In the coupled state, the gasket 24 shown in FIG. 1 is inserted into the gasket groove 23, and the optical connection enclosure is assembled by the fastening means.

As described above, by molding the enclosure 20b in a plane, the enclosure 20b can be stacked and stored in order, so that the storage is convenient. In addition, when the optical connection box 10 is assembled and installed in the air or on the ground, the assembly is convenient, and when the impact is applied from the outside of the enclosure, the V-shaped openings of the bent groove 25a are in airtight contact with each other. Since the enclosure 25b is no longer curled by the repulsive force, there is an advantage that it can withstand external shocks and lateral pressures.

Claims (1)

Is connected to the optical fiber protective support plate 10 to a circular plate formed with a cylindrical housing 20a surrounding the inner box for connecting the optical fiber inside the coupling means is cut in the longitudinal direction and the outer periphery is formed; In the optical connection enclosure consisting of an end cap 30, which is a cable inlet 36 to guide the optical cable including the optical fiber is formed, coupled to both ends of the enclosure (20a) by fixing means, When the enclosure 20a is flattened and surrounded by the circumference of the enclosure through the enclosure 20a, fastening means are provided at the ends contacting each other, and a plurality of V-shaped spaced intervals in the longitudinal direction are provided on the inner surface thereof. Enclosure of the horseshoe-shaped optical splice enclosure, characterized in that consisting of bending grooves (25a, 25b).