CN104142550B - Optical cable wiring shell with joint filling waterproof auxiliary device - Google Patents

Abstract

The present invention discloses an optical cable junction housing with a caulking waterproof auxiliary device, comprising at least one cable inlet and outlet end face, formed with at least one first hollow tube column for an optical cable that is about to undergo a mid-way branch connection operation and is prepared to undergo waterproofing treatment with an elastic shrink tube, and after being bent without cutting off the optical fiber core, the optical cable passes through the at least one first hollow tube column in the form of two optical cables to enter and exit the junction housing; at least one caulking waterproof auxiliary device can be combined with an optical cable that is about to pass through the at least one first hollow tube column in the form of two optical cables and enter the junction housing for a mid-way branch connection operation, forming a first waterproof structure at the place where the at least one caulking waterproof auxiliary device is about to be covered by the elastic shrink tube; at least one elastic shrink tube can be used to gather and cover the outside of the at least one first hollow tube column and a part of the at least one caulking waterproof auxiliary device to form a second waterproof structure. The present invention overcomes many problems caused by existing optical cable junction housing waterproofing methods.

Description

An optical cable junction shell with a caulking and waterproof auxiliary device

This application is a divisional application of an application with an application date of July 2, 2010, an application number of 201010222996.2, and an invention titled "An Optical Cable Junction Housing with an Auxiliary Device for Filling and Waterproofing".

technical field

The present invention relates to an optical cable junction housing with a caulking and waterproof auxiliary device, in particular to an optical cable junction housing which can be waterproofed by using an elastic shrink tube to improve the introduction of branched and spliced optical cables in the middle of the introduction, so that the waterproof treatment and operation of the junction housing leading to the optical cable The unification of construction methods can not only improve construction quality and construction safety, but also greatly reduce the cost of maintenance and operation of the industry.

Background technique

In the technical fields of various wired transmission industries such as telecommunications, cable television, and monitoring systems, optical cables have been used on a large scale to transmit voice, data, and image information, and the optical cables that transmit information to various places are in the optical cable junction box. Carry out splicing and branching operations. The optical cable junction housings are all provided with cable inlet and outlet end faces, and the cable inlet and outlet end faces are all provided with cable inlets and outlets for leading optical cables into the junction housing for splicing and branching operations.

In the past, optical cables were mostly used for trunk trunks, and the cable junction shells were mostly used for straight-line connection (connecting a cut-off optical cable with another optical fiber cable with the same core number) and branch connection (connecting a more The fiber optic cable of the core fiber is distributed into the splicing operation of several different optical cables with fewer core fibers); today's communication network has entered the broadband service era of fiber-to-the-home FTTH. A large number of optical fibers must be distributed to the photochemical equipment of the client by using the cable junction box; therefore, in addition to being suitable for the straight line connection and branch connection of the fiber optic cable, the cable connection casing must also be suitable for a large number of midway connection and branch connection operations of the fiber optic cable (one For the trunk optical cable with many core optical fibers, when the user needs optical fiber service during the course of the cable, a small part of the unused optical fiber is connected to another branch optical cable with a cable junction box, and then led to the new one. users, and most of the optical fiber core wires of the backbone optical cable, especially the optical fiber core wires that have been used by other customers, cannot be cut off).

In the optical cable junction housing in the prior art, the waterproof treatment methods for the cable entry and exit end faces for straight-line splicing and branch splicing optical cables to enter the junction casing include mechanical, heat-shrinkable and elastic shrinkable tube methods. Among them, the mechanical parts are complex and costly; while the heat-shrinkable type is low in cost, but the construction requires fire, the construction quality is difficult to be consistent, and the waterproof effect is easily affected by the bending and twisting of the optical cable. It is more suitable for overhead and wall-mounted environments. It is not suitable for underground optical cables in manholes with long-term water accumulation; the construction of elastic shrink tubes is the most convenient, with high consistency of construction quality, good waterproof effect, and low cost of materials. Therefore, it is the best choice for the industry to use elastic shrink tubes for waterproof treatment of straight-line splicing and branch splicing optical cables.

The elastic shrink tube is made of elastomer with high elongation, high tensile strength (Tensile Strength) and good elastic recovery rate. The elastic shrink tube is lined with a plastic threaded tube that can be removed in strips to expand its aperture. The elastic shrink tube waterproof method is to put a part of the elastic shrink tube with a large aperture on the outside of the hollow tube column on the cable inlet and outlet end surface for the optical cable to enter and exit, while the other part is placed on the hollow tube column that passes through the hollow tube to connect. For the optical cable at the outer end of the hollow tube column, when the hard plastic threaded tube lining the wall of the elastic shrink tube is removed, the elastic shrink tube returns to a smaller aperture close to the enlarged aperture, and the smaller aperture is smaller than The outer diameter of the hollow tube and the outer diameter of the optical cable, by the radial contraction force of the elastic shrink tube, the elastic shrink tube is tightly wrapped around the outside of the hollow tube column and connected to the outside of the hollow tube column through the hollow tube column The optical cable at the end forms a tight waterproof structure.

However, in the optical cable junction housing in the prior art, a cable inlet and outlet end face can be used for the midway introduction of diverging and continuous operation optical cables to enter the junction housing. There are only two types of waterproof treatment: mechanical type and heat shrinkable type. However, in the existing technology, the reason why the fiber optic cables that are diverted and spliced in the middle cannot be waterproofed by means of elastic shrink tubes is because the optical cables that are to be diverted and spliced in the middle must be double-cabled without cutting off the optical fiber core wires. In the form of a cable passing through the cable junction box, a cable enters and exits the cable inlet and outlet of the end face, enters the junction box for connection and branching operations, and after the elastic shrinkage tube shrinks, it is difficult to tightly wrap the two optical cables. The sunken gap, so it can't achieve the waterproof effect. In addition, there are certain technical standards for the bending of the optical fiber. Generally, the radius of curvature of the optical fiber of the external cable is 3 cm (the diameter is 6 cm). Therefore, the end face of the cable entry and exit is suitable for leading in and out of the branch and connecting the cable in the form of double cables. The hole diameter of the hollow pipe column and the inner diameter of the longer side are generally greater than 6 cm as required by telecom operators, while the diameter of general optical cables is only about 1.5 to 2 cm. Such a large drop is not suitable for elastic shrink tubes Water repellent treatment is carried out. Therefore, in the optical cable junction shell in the prior art, only the optical cables with straight line connection and branch connection can be waterproofed by elastic shrink tube, and the cable with branch connection in the middle must be waterproofed by thermal shrinkage or mechanical method. .

Therefore, if the optical cable junction shell in the prior art can be improved so that double cables pass through a cable in the middle of the hollow tube column at the end face to lead and connect the branched and connected optical cables, the elastic shrinkable tube can also be used for waterproofing, so that The waterproof treatment and unification of the operation method of the junction shell leading the optical cable can not only improve the construction quality and safety, but also greatly reduce the maintenance and operation cost of the industry.

Because of this, the inventor of this case conceived "a kind of fiber optic cable junction box with a caulking and waterproof auxiliary device" in this case through careful research and exploration, and with a persistent spirit in view of the shortcomings produced in the known technology. ", the following is a brief description of the case.

Contents of the invention

In order to overcome the deficiencies of the prior art, the object of the present invention is to provide an optical cable junction box with a caulking waterproof auxiliary device, the junction box includes at least one cable entry and exit end surface, and the at least one cable entry and exit end surface is formed with at least one The first hollow column can be used for the fiber optic cable that is about to be diverted and spliced in the middle and is prepared to be waterproofed with an elastic shrink tube. Without cutting off the fiber core wire, after bending, it passes through the fiber optic cable in the form of double cables. At least one first hollow pipe column, which enters and exits the junction box; and at least one caulking and waterproof auxiliary device, and the at least one caulking and waterproof auxiliary device can pass through the at least one first hollow in the form of double optical cables The pipe column enters the junction box to carry out the midway leading and branching of the optical cable, and the at least one caulking and waterproofing auxiliary device is about to be wrapped by the elastic shrink tube with a single-sided sticky elastic waterproof tape to form a first A waterproof structure; and at least one elastic shrink tube, and the at least one elastic shrink tube can be wrapped around the outside of the at least one first hollow pipe column, the outside of the at least one caulking waterproof auxiliary device and the bedding A part of the bent optical cable forms a second waterproof structure. The purpose of using the caulking and waterproof auxiliary device is to connect the branched and continuous optical cables in the middle, in the form of double optical cables, the cables that pass through the cable junction shell and enter and exit the end surface of the cable without cutting off the optical fiber core wire. The entrance and exit, enter the junction box for splicing and branching operations, and the gap between the two optical cables must first be formed into a quasi-elliptical cylinder or circular cylinder with no recessed gaps by using a caulking and waterproof auxiliary device. Four waterproof structure, in order to use elastic shrink tube for waterproof treatment.

Furthermore, the optical cable junction housing of the present invention further includes the at least one auxiliary waterproofing device for caulking, which includes a cable tightening shell, a tightening screw, a viscous and plastic waterproof glue, and an elastic body waterproof gasket. One of the group consisting of and its combination.

Furthermore, the optical cable junction housing of the present invention further includes at least one second hollow column formed on the at least one cable inlet and outlet end surface, allowing the optical cables to be connected in straight lines and branches to pass through to enter and exit the junction housing.

Furthermore, the optical cable junction housing of the present invention further includes that the at least one second hollow tube column can be covered by an elastic shrink tube on the outside of the at least one second hollow tube column and also on the outside of the at least one second hollow tube column. The second hollow pipe column enters the connection shell and is connected to a part of cables at the outer end of the second hollow pipe column to form a waterproof structure. Since the optical cables for straight-line splicing and bifurcated splicing operations are tied to the case of cutting the optical fiber core wire, they pass through the second hollow column in the form of a single optical cable to enter and exit the junction shell, so when the elastic shrink tube is used for cable waterproofing, no Use a caulk waterproofing aid.

Furthermore, the optical cable junction housing of the present invention further includes at least one first fixing device inside the junction housing, and the at least one first fixing device is formed by including a tightening ring, a tightening band, a tightening clamp and a combination thereof. One of the formed groups is fixed to the at least one first fixing device outside the cable leading into the junction box.

Moreover, the optical cable junction housing of the present invention further includes at least one optical fiber storage tray bracket inside the junction housing, and the position of the at least one cable inlet and outlet end surface for the main optical cable to pass through is set at the entrance of the main optical cable. The linear travel behind the wiring housing is not blocked and interfered by the optical fiber storage tray on the at least one optical fiber storage tray bracket. Therefore, it is possible to avoid the optical cable junction housing with a small internal space. After entering the junction housing, the trunk optical cable must be bent immediately after being blocked and interfered by the optical fiber receiving tray, resulting in poor transmission quality.

Moreover, the optical cable junction shell of the present invention further includes the position of the entrance and exit of the at least one cable inlet and outlet end surface for the straight-line connection and branch connection optical cables to pass through, which is set on the linear stroke after the optical cable enters the junction casing, and will not The position blocked and interfered by the optical fiber storage tray on the at least one optical fiber storage tray bracket.

Moreover, the optical cable junction housing of the present invention further includes at least one second fixing device inside the junction housing for fixing at least one optical fiber storage tray bracket, and the at least one second fixing device can cooperate with the at least one cable to enter and exit Depending on the position of the entrance and exit of the end surface for the trunk optical cable to pass through, the at least one optical fiber storage tray support is fixed at different positions. Since the fixing, storage, configuration and other operations of the main optical cable on the optical fiber storage tray bracket and the positions of related components have established models and technical requirements, the position of the cable entrance and exit is not suitable for arbitrary changes, but when necessary, The best benefits can only be obtained by changing the main optical cable inlet and outlet; therefore, the second fixing device is provided in the optical cable junction box of the present invention, so that when necessary, different cable inlets and outlets on the cable inlet and outlet end faces of the main optical cable can be selected to enter The connection shell, and its fixation, storage, configuration and other operations related to the optical fiber storage tray bracket can still be operated according to the established technical mode, so as to reduce the adverse effects caused by changing the main optical cable entrance and exit, thereby improving the cable entrance and exit. The scope of application of the cable entrance and exit and ensure the technical quality of the related work.

Furthermore, the optical cable junction housing of the present invention further includes the first hollow tube column and the second hollow tube column, and heat shrinkable tubes and cables that will pass through the hollow tube column and enter the junction housing can also be used. A waterproof structure is formed between them.

The present invention provides a cable junction housing, the junction housing includes: a cable inlet and outlet end face; a first hollow pipe column, which is arranged on the cable inlet and outlet end face, for connecting a cable in the middle of the branch connection operation passing through, wherein the cable passes through the first hollow column in the shape of a hairpin; and a caulking waterproof auxiliary device wrapping the cable in the shape of a hairpin to form a first waterproof structure.

The present invention also provides a cable terminal housing, which includes: a cable inlet and outlet end surface, the cable inlet and outlet end surface includes a first hollow pipe column; a cable passes through the first hollow pipe column in a double-bending manner ; a caulking waterproof auxiliary device, covering the bent cable to form a first waterproof structure; The cables of a waterproof structure form a second waterproof structure.

Description of drawings

Fig. 1 (A)～(E) is the schematic diagram of a kind of fiber optic cable junction shell 1 of a kind of tool joint waterproof auxiliary device used in embodiment 1 of this case;

Fig. 2 is a schematic diagram of the cable entry and exit end face of an optical cable junction shell with a caulking and waterproof auxiliary device used in Example 1 of this case;

Figure 3 is a schematic diagram of the interior of an optical cable junction box with a caulking and waterproof auxiliary device used in Example 1 of this case;

FIG. 4 is a schematic diagram of the interior of an optical cable junction box with a caulking and waterproof auxiliary device used in Example 1 of the present case.

Detailed ways

The "optical cable junction housing with a caulking and waterproof auxiliary device" proposed in this case can be fully understood from the following examples, so that those who are familiar with the art can complete it, but the implementation of this case cannot be obtained from the following examples However, being limited to its implementation type, those skilled in the art can still deduce other embodiments according to the spirit of the disclosed embodiments, and these embodiments all belong to the scope of the present invention.

Example 1

Please refer to Fig. 1 (A) to Fig. 1 (E), it is the schematic diagram of a kind of optical cable junction box 1 of tool filling waterproof auxiliary device used in embodiment 1 of this case, and it has a cable entry and exit end face 2, and this cable entry and exit The end face 2 is formed with a first hollow pipe column 3 (Fig. 1(A)), and the terminal housing also has a caulking and waterproof auxiliary device and an elastic shrink tube 4, and the caulking and waterproof auxiliary device includes two semicircular tools to accommodate Cable tightening housing 401 with double optical cable grooves, tightening screw 402, double-sided sticky and plastic waterproof tape 403, single-side sticky elastic body waterproof tape 404 (Fig. 1(B)). When the optical cable 5 that is about to be diverted and connected in the middle is not cut off the optical fiber core wire 6, after bending, it is prepared to pass through the first hollow column 3 of the cable entry and exit end surface 2 in the form of a double optical cable. When the wiring case 1 is inside, the operation of its waterproof treatment first lays a double-sided viscous and plastic waterproof tape 403 on one side of a semicircular cable tight casing 401 that accommodates two optical cable grooves, Wrap and wrap double-faced sticky and plastic waterproof tape 403 on the part where the fiber optic cable 5 is used to connect the diverging and continuing operations in the middle of the cable 5, and prepare to combine with the cable tight casing 401 in the form of double cables, and then use the tightening screw 402 to tighten the two. One piece of semicircular cable tightening shell 401 is locked to form a cylindrical waterproof structure, and then the excess that is squeezed out due to locking at the outer joint of the two semicircular cable tightening shells 401 is removed. After the remaining double-sided sticky and plastic waterproof tape 403, use a single-side sticky elastic body waterproof tape 404 to wrap around the outside of the two semicircular cable tight casings 401 that have formed a cylindrical shape, and the double-sided A first waterproof structure is formed between the optical cable 5 and the cable tight casing 401 (Fig. 1(C)); and then the elastic shrink tube 4 is inserted into the first waterproof structure and is about to be prepared for the midway diversion and connection work. The optical cable 5 that has been waterproofed with the elastic shrink tube 4, and then the optical cable 5 that has formed the first waterproof structure is bent in half without cutting the optical fiber core wire 6, and then passed through the first hollow column in the form of double optical cables 3 Enter the terminal housing 1 and fix it, and then use the elastic shrink tube 4 to wrap the outside of the first hollow pipe column 3 and the quasi-cylindrical column that the first waterproof structure does not penetrate into the first hollow pipe column 3 body to form a second waterproof structure (Fig. 1(D)), that is, to complete the waterproof treatment between the midway lead-in branch connection optical cable 5 and the cable entry and exit end face 2 (Fig. 1(E)).

Please refer to Figure 2, which is a schematic diagram of the cable entry and exit end face 2 of an optical cable junction box 1 with a caulking and waterproof auxiliary device used in Example 1 of this case. The cable entry and exit end face 2 is also formed with a second hollow column 7 The optical cable 8 that is about to be connected in a straight line and branched can pass through and enter and exit the junction shell 1, and the second hollow pipe column 7 can also be wrapped around the second hollow pipe column by using an elastic shrink tube 4 7 and at the same time cover a part of the cable 8 that passes through the second hollow pipe column 7 and enters the junction housing 1 and is connected to the outer end of the second hollow pipe column 7 to form a waterproof structure ( FIG. 2 ). And when the outer diameters of the second hollow pipe column 7 and the cable 8 are smaller or scratched, the elastic body waterproof adhesive tape 404 with one side of stickiness can also be used to wrap the outer diameter to be suitable for the elastic contraction tube 4 Tighten the wrap to waterproof dimensions and fill in scratches.

Please refer to Figure 3, which is a schematic diagram of the interior of an optical cable junction housing 1 with a caulking and waterproof auxiliary device used in Example 1 of this case. A first fixing device 9 is also provided inside the junction housing 1, and the first fixing device 9. The optical cable 8 introduced into the terminal housing 1 is fixed to the first fixing device 9 with a stainless steel tightening ring 10.

Please refer to Figure 4, which is a schematic diagram of the interior of an optical cable junction box 1 with a caulking and waterproof auxiliary device used in Example 1 of this case. The interior of the junction box 1 is also provided with an optical fiber storage tray bracket 11, and the cable enters and exits the end surface The position of the entrance and exit of the first hollow column 3 of 2 for the trunk optical cable to pass through is set in the linear stroke after the trunk optical cable 5 enters the junction housing 1, and will not be blocked by the optical fiber storage tray 12 on the optical fiber storage tray bracket 11. The blocked and interfered position; and the second fixing device 13 is also provided inside the junction box 1, which is used to fix the optical fiber storage tray bracket 11, and the second fixing device 13 can cooperate with the cable entry and exit end face 2 for midway leading branch connection The main optical cable 5 or the cable inlet and outlet positions for the straight main optical cable 501 to pass through are different, and the optical fiber storage tray bracket 11 is fixed at different positions ( FIG. 4 ). In addition, in the optical cable junction housing 1 with a caulking and waterproof auxiliary device used in Example 1 of this case, the second hollow column 7 of the cable inlet and outlet end face 2 is used for the entry and exit of the optical cables 8 for straight line connection and branch connection. The position of the exit is also arranged at a position where the optical cable 7 enters the linear travel after the terminal housing 1, and will not be blocked and interfered by the optical fiber storage disc 12 on the optical fiber storage disc support 11 (Fig. 3).

According to the description of the above-mentioned embodiment 1, an optical cable junction box with a caulking and waterproof auxiliary device of the present invention overcomes many deficiencies in the prior art, such as insufficient functions, high cost, uneven construction quality, and construction safety. The unified equipment and operation methods have greatly improved the construction quality and greatly reduced the maintenance and operation costs of related operators.

This case can be modified in various ways by a person who is familiar with the craftsman's ideas, but none of them is deviating from the intended protection of the attached application scope.

Claims (10)

1. An optical cable junction housing, the junction housing comprising: At least one cable enters and exits the end face; At least one first hollow pipe column is arranged on the at least one cable inlet and outlet end surface, so that the optical cable that is about to be branched and connected in the middle can pass through the at least one first hollow pipe column in the form of double optical cables after being bent. ; At least one caulking waterproof auxiliary device is combined with the optical cable that will pass through the at least one first hollow pipe column in the form of double optical cables and enter the junction box for midway diversion and connection work, and the at least one caulking The part of the waterproof auxiliary device that is about to be covered by the elastic shrink tube is wound with a single-sided sticky elastic waterproof tape to form a first waterproof structure; and At least one elastic contraction tube is used to bundle and wrap the outside of the at least one first hollow pipe column, the outside of the at least one caulking waterproof auxiliary device and a part of the bent optical cable to form a second waterproof structure . 2. The optical cable junction housing as claimed in claim 1, wherein the at least one caulking waterproof auxiliary device comprises a cable tightening housing, a tightening screw, a viscous and plastic waterproof glue, and an elastomer waterproof lining. One of the group of pads and combinations thereof. 3. The optical cable junction housing according to claim 1, wherein the at least one cable entry and exit end face is also formed with at least one second hollow column for passing the optical cables that are about to perform straight line splicing and branch splicing operations, and the entry and exit of the wiring shell. 4. The optical cable junction housing according to claim 3, wherein the at least one second hollow tube column can be covered by an elastic shrink tube on the outside of the at least one second hollow tube column and also on the wear-through. A waterproof structure is formed by entering the connection shell through the second hollow pipe column and connecting a part of the cables at the outer end of the second hollow pipe column. 5. The optical cable junction housing as claimed in claim 4, wherein when the outer diameters of the at least one second hollow column and the optical cable are small or scratched, a single-sided sticky elastic body waterproof tape can be used to wrap To expand its outer diameter to the size suitable for the elastic contraction tube to wrap and coat waterproof and to fill up scratches. 6. The optical cable junction housing according to claim 5, further comprising at least one first fixing device inside the junction housing, and the at least one first fixing device includes a tightening ring, a tightening band, a tightening clamp and the like One of the groups formed by the combinations is fixed to the at least one first fixing device outside the cables introduced into the wiring case. 7. The optical cable junction housing according to claim 6, further comprising at least one optical fiber storage tray support inside the junction housing, and the position of the at least one cable inlet and outlet end surface for the main optical cable to pass through is set at the The position where the linear travel of the trunk optical cable after entering the junction housing will not be blocked or interfered by the optical fiber storage tray on the at least one optical fiber storage tray bracket. 8. The optical cable junction shell as claimed in claim 7, further comprising the position of the entrance and exit of the at least one cable entry and exit end surface for the straight-line connection and branch connection optical cables to pass through, which is set on the linear stroke after the optical cable enters the junction casing , a position that will not be blocked and interfered by the optical fiber storage tray on the at least one optical fiber storage tray bracket. 9. The optical cable junction housing according to claim 8, further comprising at least one second fixing device inside the junction housing for fixing at least one optical fiber storage tray support, and the at least one second fixing device can cooperate with the at least one The at least one optical fiber storage tray support is fixed at different positions depending on the position of the cable entrance and exit end surface for the trunk optical cable to pass through. 10. A method for waterproofing the optical cable junction housing as claimed in claim 1, wherein the optical cable junction housing comprises at least one hollow column, comprising: After bending the optical cable in half, lay a pair of sticky and plastic waterproof tape on the side of the semicircular cable tight casing with double optical cable grooves; Wrap another double-faced adhesive and plastic waterproof tape on the part where the split optical cable is connected in the middle and is prepared to be combined with the cable tight casing in the form of a double optical cable; Locking two pieces of the semicircular cable tight housing with a tightening screw to form the at least one caulking waterproof auxiliary device; Wrap the elastic waterproof tape with one side of stickiness on the outside of the two semicircular cable tight casings that have formed a cylindrical shape, and form a first waterproof structure at the double optical cables; passing the optical cable formed with the first waterproof structure through the at least one hollow column and fixing it to the wiring case; as well as wrapping the elastic contraction tube around the outside of the at least one hollow pipe column, the part of the first waterproof structure that does not penetrate the at least one hollow pipe column, and a part of the bent optical cable to form a second waterproof structure.