KR20080003023U - Optical cable fixing socket for junction box - Google Patents

Abstract

The present invention completely blocks rainwater or foreign matter from penetrating into the junction box at the part where the optical cable penetrates the junction box, and can be firmly fixed so that the optical cable does not flow in the longitudinal direction, and is exposed at the junction of the optical fiber. It provides an optical cable fixing socket for the junction box that can be very simple and securely performed to organize and fix the tension line.

An optical cable fixing socket according to the present invention includes a socket body having a through hole through which an optical cable penetrates in the center, and integrally formed with a head portion held on a wall of the connection enclosure and a fixing portion penetrating the connection enclosure; A socket fixing member coupled to the fixing part of the socket body to fix the socket body to the connection box; A press-elastic body having a through hole through which the optical cable passes and inserted into the fixing part; A fixing cap having a through hole through which the optical cable penetrates and is coupled to a fixing part of the socket body and has a pressing protrusion for pressing the pressing elastic body; A holder body comprising a holder coupling part coupled to the head of the socket body and a support part integrally formed in series with the holder coupling part, and having a through hole through which an optical cable penetrates in the center, and coupled to an outer side of the support part of the holder body; It is composed of a tension line holder consisting of a tension line fixing member for fixing the tension line.

Description

Optical cable fixing socket for junction box {OPTICAL FIBER CABLE HOLDING SOCKET FOR CONNECTING BOX}

1 is a configuration diagram showing a construction state of a typical optical cable.

2 is a block diagram of a typical optical cable.

Figure 3 is an overall perspective view of an optical cable fixing socket according to the present invention.

Figure 4 is an exploded perspective view of the optical cable fixing socket according to the present invention.

Figure 5 is a cross-sectional view of the use state of the optical cable fixing socket according to the present invention.

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

1: junction box 2: optical cable

2a: optical fiber 2b: protective tube

2c: tension line 10: socket body

12: head 13: fixed part

20: socket fixing member 30: packing

40: pressurized elastomer 50: fixed cap

60: holder body 61: holder coupling portion

62: support portion 64: extension protrusion

70: holder fixing member 80: tension line holder

The present invention relates to an optical cable fixing socket for a junction box, and more particularly, to securely fix an optical cable connected to an interconnection part through a junction box to the junction box, and at the same time, rainwater or The present invention relates to an optical cable fixing socket for a junction box that maintains watertightness to prevent foreign substances from penetrating.

1 is for explaining the construction state of a typical optical cable, the optical cable (2) connected from the telecommunications company (3) to the user, such as home or office, is connected to the underground junction box (1) of the local area through the base In addition, the connection box (1) is connected to the ground connection enclosure (1) provided in the adjacent telegraph pole (4) of the area, the ground connection enclosure (1) is to be connected to each home or office. The optical cable 2 constructed in this way has become a taper diameter in recent years while enabling the transmission of a large amount of data.

2 shows a configuration of an optical cable 2 recently used. The optical cable 2 is provided with an optical fiber 2a having a diameter of about 0.2 to 0.9 mm at the center thereof, and is provided on the outer circumference of the optical fiber 2a. The protective tube 2b is covered and protected, and a tensile line 2c is provided between the protective tube 2b and the optical fiber 2a to increase the tensile force of the optical cable 2 so that a strong tensile force during the construction of the optical cable 2 is achieved. Even if this acts, the optical cable 2 is not easily broken.

In the case where the optical cable 2 is penetrated through the wall surface of the connection enclosure 1 and connected to the internal connection parts, as shown in FIG. 1, the optical cable 2 does not flow in the longitudinal direction through the through portion of the connection enclosure 1. The fixing socket 5 is installed so as to prevent it.

However, since the conventional fixed socket 5 is configured to simply press and fix the optical cable 2 which is fixed to the connection enclosure 1 and penetrates from the outside, between the connection enclosure 1 and the fixed socket 5 or the optical cable ( Rainwater or foreign matter may penetrate into the junction box 1 between 2) and the fixed socket 5. In particular, when rainwater penetrates, there is a problem of damaging the electrical parts or metal parts inside the connection enclosure 1, causing a short at the electrical connection part or generating noise in the transmission data.

In addition, the conventional fixed socket (5) is not firmly fixed in the optical cable 2, when the tension force in the longitudinal direction with respect to the optical cable (2) is easily flowed to break or loosen at the connection portion of the optical fiber (2a) This happens. And when the optical fiber 2a is connected to the connection part in the connection enclosure 1 in a state where the protective tube 2b is removed by a predetermined length and the optical fiber 2a of the optical cable 2 is exposed, the tension as shown in FIG. Line 2c is exposed together. Therefore, in order to clean up the exposed tension line 2c, a separate hollow tube (not shown) slightly longer than the exposed portion of the optical fiber 2a is inserted outside the tension line 2c, and then, at the end of the protective tube 2b. We are putting together and arranging.

However, this tension line (2c) cleaning work is not only very cumbersome, but also the hollow tube is not firmly fixed there is a risk of being easily pulled out in the pinch state, and the tension line (2c) is composed of a very thin thread form of a synthetic resin made of multiple strands Since the optical fiber 2a and the protective tube 2b are considerably slippery. Therefore, when the tensile force acts in the longitudinal direction of the optical cable 2, there is a problem that the slide is generated between the tension line (2c) and the protective tube (2b), so that the tension line (2c) is pulled out, which is overexposed.

The present invention has been made to solve the above problems, and its purpose is to shorten the penetration of rainwater or foreign matter into the junction box at the part where the optical cable penetrates the junction box, so that the short circuit at the junction inside the junction box is completed. To prevent the occurrence of noise or noise in the transmission data and at the same time to provide an optical cable fixing socket for the junction box that can be securely fixed so that the optical cable does not flow in the longitudinal direction.

Another object of the present invention is to make the cleanup and fixation of the tension line exposed at the connection part of the optical fiber very simple and secure, so that even when the tension force acts in the longitudinal direction of the optical cable, the clean state of the tension line is maintained and the tension is applied. An optical cable fixing socket for a junction box can be provided to prevent overexposure of wires.

In order to achieve the above object, the present invention includes a socket body having a through hole through which an optical cable penetrates in the center, and integrally formed with a head portion held on a wall of the connection enclosure and a fixing portion penetrating through the connection enclosure; A socket fixing member coupled to the fixing part of the socket body to fix the socket body to the connection box; A press-elastic body having a through hole through which the optical cable passes and inserted into the fixing part; The optical cable fixing socket for the junction box includes a fixing cap having a through hole through which the optical cable penetrates and is coupled to a fixing part of the socket body and pressurizing the pressing elastic body.

In addition, the present invention is made of a holder engaging portion coupled to the head of the socket body and a support portion formed integrally and successively formed in the holder coupling portion, the holder body having a through hole through which the optical cable passes through the center of the holder body, It is characterized in that the optical cable fixing socket for the junction box further comprises a tension line holder composed of a tension line fixing member coupled to the outside of the support to fix the tension line.

In addition, the present invention is characterized in that the optical cable fixing socket for the junction box further comprises a packing between the junction box and the socket fixing member.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. 3 to 5 show the optical cable fixing socket according to the present invention, Figure 3 is a perspective view, Figure 4 is an exploded perspective view, Figure 5 is a cross-sectional view showing a state of use. As shown in the optical cable fixing socket of the present invention, the socket body 10 is installed through the wall surface of the junction box 1, and the socket fixing member for fixing the socket body 10 to the junction box (1) (20), the socket body (10) has a through hole (11) through which the optical cable (2) penetrates in the longitudinal direction, and the head (12) is held on the wall surface of the junction box (1). ) And a fixing part 13 protruding to the opposite side through the connection enclosure 1 is formed integrally.

The fixing structure of the connection enclosure 1 and the socket body 10 by the socket fixing member 20 is to couple the socket fixing member 20 to the outer circumferential surface of the fixing part 13 of the socket body 10. The connector 1 is configured to be tightly fixed between the socket fixing member 20 and the head 12 by forming a male screw 13a on the outer circumferential surface of the fixing portion 13 and the socket fixing member ( It is preferable to form the female screw 20a in 20 and screw them to the coupling between the socket fixing member 20 and the fixing part 13. At this time, between the socket fixing member 20 and the connection enclosure 1 is configured to maintain a watertight between the socket body 10 and the connection enclosure 1 via a packing 30.

In addition, the fixing portion 13 of the socket body 10 is formed with an insertion hole 13b into which the pressurized elastic body 40 is inserted. The pressurized elastic body 40 is made of a flexible plastic material that is flexible and flexible, and has a cylindrical shape having a through hole 41 through which the optical cable 2 penetrates in the center. It is inclined shape. The pressurized elastic body 40 is pressurized at one end by the fixing cap 50 coupled to the fixing portion 13 of the socket body 10 and compressed in the longitudinal direction, thereby expanding the outer diameter in the insertion hole 13b and the inner diameter. The elastic deformation is reduced, so that the outer circumferential surface of which the diameter of the pressurized elastic body 40 is enlarged is in close contact with the inner circumferential surface of the insertion hole 13b and the inner circumferential surface of the through hole 41 whose inner diameter is reduced Is in close contact with the outer circumferential surface of the optical cable 2 to maintain the watertight between the socket body 10 and the optical cable (2).

The fixing cap 50 has a through hole 51 through which the optical cable 2 penetrates, and a female screw 50a for screwing into the male screw 13a formed in the fixing portion 13 of the socket body 10. The inner side is formed with a cylindrical pressing protrusion 52 for uniformly pressing one end surface of the pressing elastic body 40 when the socket body 10 is coupled to the inside.

In addition, the optical cable fixing socket of the present invention is assembled to the head portion 12 of the socket body 10 to protect and support the exposed optical fiber (2a) of the optical cable 2, and at the same time to expose the exposed tension line (2c) Further provided is a tension line holder (80) to clean and clean up.

The tension line holder 80 is composed of a holder body 60 and a tension line fixing member 70 coupled to the holder body 60. The holder body 60 is integrally formed with the holder coupling portion 61 coupled to the head portion 12 of the socket body 10 and the support portion 62 for protecting and supporting the optical fiber 2a, and the holder coupling portion ( The through hole 63 through which the optical cable 2 penetrates is formed in the center of 61 and the support part 62. As shown in FIG. The coupling structure of the holder coupling portion 61 and the socket body 10, the coupling groove of the shape corresponding to the shape of the outer peripheral surface of the holder coupling portion 61 in the head portion 12 of the socket body 10 ( 12a) is made by fitting the holder engaging portion 61 to the coupling groove 12a.

The tension line fixing member 70 is for holding and fixing the exposed tension line 2c. The coupling structure of the holder body 60 and the tension line fixing member 70 is provided on the outer circumferential surface of the support portion 62. It is made by forming the male screw 62a, and forming the female screw 70a in the tension line fixing member 70 and screwing them together. In addition, as shown in the phantom line in FIG. 5, an extension protrusion 64 for integrally attaching a separate hollow tube T for protecting the lead portion of the optical fiber 2a is integrally formed at the end of the support portion 62. As shown in FIG. It extends and forms a predetermined length notch groove 65 in the longitudinal direction from the end of the extension protrusion piece 64 so that the tension line 2c is brought into close contact with the outer circumferential surface of the support portion 62 to be arranged. 65, it is comprised so that the tension line 2c may be arrange | positioned easily.

According to the optical cable fixing socket of the present invention configured as described above, as shown in FIG. 5, an optical cable 2 installed in a through portion of the connection enclosure 1 and penetrating the connection enclosure 1 is connected to the connection enclosure 1. Simultaneously with fixing, it is possible to perform a function to prevent rainwater or foreign matter from entering the connection enclosure 1 between the connection enclosure 1 and the fixed socket or between the optical cable 2 and the fixed socket.

When explaining the operation of the subject innovation through the assembly process of the fixed socket is as follows. First, when the fixing part 13 of the socket body 10 penetrates from the inner side to the outer side of the junction box 1, the head 12 is held on the inner wall of the junction box 1, and the fixing part 13 Protrudes outward. Subsequently, the packing 30 is inserted into the fixing part 13 and the female screw 20a of the socket fixing member 20 is screwed into the male screw 13a of the fixing part 13. The socket body 10 is firmly fixed to the junction box 1 because the socket body 10 is inserted between the head part 12 of the socket body 10 and the socket fixing member 20 to be in close contact with the packing 30. Preventing rain or foreign matter from penetrating into the junction box 1 through the junction box 1 and the socket body 10 by the packing 30 interposed between the junction box 20 and the junction box 1. can do.

As described above, the optical cable 2 is fixed to the fixing body 50, the pressurized elastic body 40, the socket body 10, and the holder body 60 in the state in which the socket body 10 is fixed to the connection box 1. 51, 41, 11, 63) in turn and then through, and then screw and fix the female screw 50a of the fixing cap 50 to the male screw 13a of the fixing part 13, and fix it at the same time as screwing. The pressurizing protrusion 52 of the cap 50 pressurizes one end surface of the pressurized elastic body 40.

When the pressurized elastic body 40 is pressurized, the pressurized elastic body 40 is compressed in the longitudinal direction in the insertion hole 13b, so that the outer diameter is enlarged and the inner diameter is reduced, thereby reducing the outer diameter of the pressurized elastic body 40. The enlarged outer circumferential surface is in close contact with the inner circumferential surface of the insertion hole 13b, and the inner circumferential surface of the through hole 41 having the reduced inner diameter is in close contact with the outer circumferential surface of the optical cable 2 to close the optical cable 2. While being firmly fixed to the socket body 10, the watertight between the socket body 10 and the optical cable 2 is maintained.

Subsequently, the holder coupling portion 61 of the holder body 60 is fitted into the coupling groove 12a provided in the head 12 of the socket body 10, and the optical cable 2 is shown in FIG. The protective tube 2b is removed by a certain length to expose the optical fiber 2a to be connected. At this time, the tensile line (2c) to improve the tensile force of the optical cable (2) is also exposed, and the exposed tensile line (2c) is divided into one or both of the notch groove 65 of the support portion 62, and then In the state in which it is in close contact with the outer circumferential surface of the support portion 62, the female screw 70a of the tension line fixing member 70 is screwed into the male screw 62a of the support portion 62 to clean up the tension line 2c and at the same time. It can be fixed firmly, the extension protrusion piece 64 provided at the end of the support 62, a separate hollow tube (T) for protecting the exposed optical fiber (2a) as shown by the virtual line of FIG. Can be easily fitted.

As described above, the protective tube 2b of the optical cable 2 is firmly fixed to the socket body 10, and the tensile line 2c of the optical cable 2 is firmly fixed by the tension line holder 80. When the tensile force acting in the longitudinal direction with respect to 2), the optical cable (2) does not flow to maintain a fixed state, to prevent breakage or loosening at the connection portion of the optical fiber (2a), protection tube Overexposure of the tension line 2c can be prevented by the sliding action between 2b and the tension line 2c.

The present invention is not limited to the embodiments described so far, various changes, modifications or substitutions may be made by those skilled in the art within the technical spirit and utility model registration claims of the present invention, such embodiments It should be understood that it belongs to the scope of the present invention.

As described above, according to the optical cable fixing socket for the junction box according to the present invention, the watertight is maintained at the portion where the optical cable penetrates the junction box, so that rainwater or foreign matter penetrates into the junction box completely, especially by rainwater penetration. The occurrence of short and noise at the optical cable connection part is prevented, and the optical cable is firmly fixed so that the optical cable does not flow in the longitudinal direction, thereby preventing the connection or disconnection at the connection part of the optical cable.

In addition, the present invention is very simple and secure work of the tension line exposed from the connection portion of the optical fiber is made, and even if the tensile force is applied in the longitudinal direction of the optical cable by fixing the protective tube and the tension line of the optical cable, respectively. It is a useful design that prevents overexposure of the tensile wires due to no slip between the protective tube and the tensile wires, thereby maintaining a clean arrangement.

Claims (3)

A socket body having a through hole through which an optical cable penetrates in the center, and integrally formed with a head portion held on the wall of the junction box and a fixing portion through the junction box; A socket fixing member coupled to the fixing part of the socket body to fix the socket body to the connection box; A press-elastic body having a through hole through which the optical cable passes and inserted into the fixing part; And a fixing cap having a through hole through which the optical cable penetrates and is coupled to a fixing portion of the socket body and at the same time pressurizing the pressure elastic body. [Claim 2] The holder body of claim 1, further comprising: a holder body coupled to the head of the socket body; a support body integrally formed with the holder body; An optical cable fixing socket for a junction box further comprises a tension line holder composed of a tension line fixing member which is coupled to an outer side of the support of the holder body and fixes the tension line. The optical cable fixing socket according to claim 1 or 2, further comprising a packing between the connecting enclosure and the socket fixing member.

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