HK1166373A - An optical cable enclosure having waterproof sealant assistance device - Google Patents

Abstract

The present invention discloses an optical cable enclosure having waterproof sealant assistance device, including at least one cable entry board formed thereon at least one first hollow tube capable of providing the optical cable, which is about to be processed with the mid-span splicing operation and be waterproofed with the elasticity shrinkable tube, to enter into the enclosure via the at least one connection portion by way of the optical cable core being bent in half without cut off as a two-optical-cable structure; at least one waterproof sealant assistance device capable of combining with the optical cable which is about to enter into the enclosure via the at least one hollow tube and be processed with the mid-span splicing operation, to form a first waterproof structure at the place where the at least one waterproof sealant assistance device is about to be warped with the elasticity shrinkable tube; and at least one elasticity shrinkable tube for warping the external part of the at least one hollow tube and a part of the at least one waterproof sealant assistance device to form a second waterproof structure. The present invention overcomes many problems resulted from the waterproof means for the optical cable enclosure in the art.

Description

Optical cable wiring shell with joint filling waterproof auxiliary device

Technical Field

The invention relates to an optical cable connection shell with a joint filling waterproof auxiliary device, in particular to an optical cable connection shell which improves the waterproof treatment of an introduced midway leading branch connection optical cable by adopting an elastic shrinkage tube, so that the waterproof treatment and the operation method of the connection shell leading optical cable are unified, the construction quality and the construction safety can be improved, and the maintenance and transportation cost of an operator can be greatly reduced.

Background

In the technical field of various wired transmission industries such as telecommunication, cable television, monitoring system, etc., optical cables are used in large scale to transmit voice, data and image information, and the information is transmitted to optical cables at various places, so that connection and branching operations are performed in an optical cable connection shell. The optical cable connection shell is provided with cable inlet and outlet end faces, and the cable inlet and outlet end faces are provided with cable inlets and outlets for leading the optical cable into the connection shell for connection and branching operation.

The conventional optical cable is mostly used for trunk lines, and the optical cable connection shell is mostly used for leading and connecting straight line connection (operation of connecting a cut optical cable with another optical cable with the same core number) and branch connection (operation of connecting an optical cable with more core optical fibers into branch optical cables with less core optical fibers); communication networks in the past have moved towards the broadband service era of Fiber To The Home (FTTH). A large number of optical fibers that must be distributed to customer premises by means of a cable splice enclosure; therefore, the optical cable connection shell is suitable for linear connection and branch connection of optical cables, and also suitable for a large number of midway branch connection operations of optical cables (when a main optical cable with more core optical fibers is in the midway of passing of the cable, and when a user needs optical fiber service, a small part of unused optical fibers are connected with another branch optical cable by one optical cable connection shell and then are led to a new user for use, and most of optical fiber core wires of the main optical cable, particularly optical fiber core wires used by other customers, cannot be cut).

In the optical cable connection shell in the prior art, three waterproof treatment modes, namely a mechanical mode, a thermal shrinkage mode and an elastic shrinkage tube mode, are adopted for a cable to enter the connection shell from an inlet end face and an outlet end face of the cable for a straight-line connection optical cable and a branch connection optical cable. Wherein the mechanical parts are complex and have high cost; the thermal shrinkage type is low in cost, but the construction needs to be done with fire, the construction quality is difficult to be consistent, the waterproof effect is easily influenced by bending and twisting of the optical cable, and the thermal shrinkage type optical cable is more suitable for being used in overhead and wall-hanging environments and is less suitable for being used for underground optical cables in manholes for water accumulation for a long time; the construction of the elastic shrinkage pipe mode is the simplest and the most convenient, the construction quality consistency is high, the waterproof effect is good, and the material cost is low. Therefore, the waterproof treatment of the optical cable for straight line connection and branch connection by adopting the elastic shrinkage tube method is the best choice for the industry.

The elastic shrinkage tube is made of an elastomer with high Elongation and Tensile Strength and good elastic recovery rate, and is lined with a plastic threaded tubular object which can be pulled out in a strip shape to enlarge the aperture of the elastic shrinkage tube. The elastic shrinkage pipe waterproof mode is characterized in that one part of the elastic shrinkage pipe with a large aperture to be supported is sleeved outside a hollow pipe column for an optical cable to enter and exit on the inlet and outlet end faces of the cable, the other part of the elastic shrinkage pipe is sleeved on the optical cable penetrating through the hollow pipe column and connected to the outer end of the hollow pipe column, after a hard plastic thread tubular object lined on the wall of the elastic shrinkage pipe is removed, the elastic shrinkage pipe is restored to be close to a smaller aperture before the large aperture to be supported, the smaller aperture is smaller than the outer diameter of the hollow pipe and the outer diameter of the optical cable, and the elastic shrinkage pipe is tightly wrapped outside the hollow pipe column and penetrates through the hollow pipe column and connected to the optical cable at the outer end of the hollow pipe column by means of the radial shrinkage force of.

However, in the optical cable connection shell in the prior art, a waterproof treatment mode that a cable inlet end face and a cable outlet end face can be used for leading the optical cable for branch connection operation to enter the connection shell in midway is only two modes, namely a mechanical mode and a thermal shrinkage mode. The reason why the midway leading branch connection optical cable cannot be subjected to waterproof treatment in an elastic shrinkage tube manner in the prior art is that the optical cable to be subjected to midway leading branch connection needs to pass through a cable inlet and outlet of one cable inlet and outlet end face of an optical cable connection shell in a double-optical-cable manner under the condition of not cutting off an optical fiber core wire to enter the connection shell for connection and branching operation, and the elastic shrinkage tube is difficult to tightly cover a concave gap formed between the double optical cables after being shrunk, so that the waterproof effect cannot be achieved. In addition, the bending of the optical fiber has a certain technical standard, the radius of curvature of the optical fiber of the general external optical cable is 3 cm (the diameter is 6 cm), so the inlet and outlet end faces of the cable are suitable for the hole diameter of the hollow pipe column for leading the branch connection optical cable to enter and exit in a double-cable mode, the inner diameter of the longer side is more than 6 cm according to the requirements of general telecommunication operators, the diameter of the general optical cable is only 1.5 to 2 cm, and the large drop is not suitable for waterproof treatment by adopting an elastic shrinkage pipe. Therefore, in the optical cable connection shell in the prior art, only the optical cables which are linearly connected and divergently connected can be subjected to waterproof treatment in an elastic shrinkage tube mode, and the optical cables which are divergently connected in a midway lead-in mode need to be subjected to waterproof treatment in a thermal shrinkage mode or a mechanical mode.

Therefore, if the optical cable connection shell in the prior art can be improved, the optical cable is connected in a branching and connecting way in a way that two cables penetrate through a hollow tubular column on the inlet end face and the outlet end face of one cable, and an elastic shrinkage tube can be adopted for waterproof treatment, so that the waterproof treatment and the operation method for connecting the optical cable by the connection shell are unified, the construction quality and the construction safety can be improved, and the maintenance and transportation cost of an operator can be greatly reduced.

Accordingly, the inventor of the present invention has made extensive research and exploration in view of the shortcomings in the prior art, and finally conceived that "a cable connection housing with a caulking waterproof auxiliary device" is briefly described below.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide an optical cable connection shell with a joint filling waterproof auxiliary device, which comprises at least one cable inlet and outlet end surface, wherein at least one first hollow tubular column is formed on the at least one cable inlet and outlet end surface and is used for preparing an optical cable for waterproof treatment by an elastic shrinkage tube for midway branch leading and splicing operation, and the optical cable is bent and then passes through the at least one first hollow tubular column in a double-strip optical cable mode to enter and exit the connection shell under the condition of not cutting off optical fiber core wires; the at least one joint filling waterproof auxiliary device can be combined with an optical cable which is about to penetrate through the at least one first hollow tubular column in a double-optical cable mode and enter the wiring shell to perform midway branch leading and splicing operation, and a first waterproof structure is formed at the position where the at least one joint filling waterproof auxiliary device is about to be coated by the elastic shrinkage tube; and the at least one elastic shrinkage pipe can be used for being bundled and coated on the outer part of the at least one first hollow pipe column and a part of the at least one joint filling waterproof auxiliary device to form a second waterproof structure. The joint filling waterproof auxiliary device is used for leading and connecting optical cables which are subjected to branch connection in midway, under the condition that optical fiber core wires are not cut off, the optical cables pass through cable inlets and outlets on cable inlet and outlet end faces of an optical cable connection shell in a double-optical-cable mode and enter the connection shell to perform connection and branching operation, and gaps between the double optical cables must be formed into a fourth waterproof structure of an oval-like cylinder or a circular cylinder without a sunken gap by the joint filling waterproof auxiliary device, so that waterproof treatment is performed by adopting an elastic shrinkage tube.

Furthermore, the optical cable connection shell of the present invention further comprises at least one joint filling waterproof auxiliary device, which comprises one of the group consisting of a cable tight-bound shell, a tightening screw, a sticky and plastic waterproof adhesive, an elastomer waterproof gasket and a combination thereof.

Furthermore, the optical cable connection shell further comprises at least one second hollow tubular column formed on the at least one cable inlet and outlet end face, and the optical cable to be subjected to linear connection and branched connection operation can pass through the second hollow tubular column and enter and exit the connection shell.

Furthermore, the optical cable connection shell further comprises at least one second hollow pipe column, and the at least one second hollow pipe column can be wrapped outside the at least one second hollow pipe column by adopting an elastic shrinkage pipe and also wrapped on a part of cable which penetrates through the second hollow pipe column and enters the connection shell to be connected with the outer end of the second hollow pipe column, so that a waterproof structure is formed. Because the optical cable for straight line connection and branch connection operation passes through the second hollow pipe column in the form of a single optical cable to enter and exit the connection shell under the condition of cutting off the core wire of the optical fiber, when the elastic shrinkage pipe is adopted for carrying out the waterproof treatment on the optical cable, a joint filling waterproof auxiliary device is not needed.

Furthermore, the optical cable connection shell of the present invention further includes at least one first fixing device inside the connection shell, and the at least one first fixing device is one of the group consisting of a tightening ring, a tightening belt, a tightening clamp and a combination thereof, and the cable introduced into the connection shell is fixed outside the at least one first fixing device.

Furthermore, the optical cable connection shell of the invention further comprises at least one optical fiber accommodating disc bracket arranged in the connection shell, and the position of the inlet and outlet of the at least one cable inlet and outlet end face for the main optical cable to pass through is a position which is not blocked and interfered by the optical fiber accommodating disc on the at least one optical fiber accommodating disc bracket when the main optical cable enters the connection shell in the linear stroke. Therefore, the problem of poor transmission quality caused by the fact that the main optical cable needs to be bent immediately after being blocked and interfered by the optical fiber accommodating disc after entering the wiring shell of the optical cable wiring shell with small internal space can be solved.

Furthermore, the optical cable connection shell of the invention further comprises an inlet and an outlet position of the at least one cable inlet and outlet end face for the optical cable which is linearly connected and divergently connected to pass through, and is a position which is not blocked and interfered by the optical fiber accommodating disc on the at least one optical fiber accommodating disc bracket when the optical cable enters the connection shell in a linear stroke.

Furthermore, the optical cable connection shell of the invention further comprises at least one second fixing device arranged inside the connection shell and used for fixing at least one optical fiber accommodating disc bracket, and the at least one second fixing device can be matched with the difference of the positions of the inlet and the outlet of the at least one cable inlet and outlet end face for the main optical cable to pass through so as to fix the at least one optical fiber accommodating disc bracket at different positions. Because the main optical cable has established mode and technical requirements on the operations of fixing, accommodating, configuring and the like related to the optical fiber accommodating disc bracket and the positions of related components, the positions of the cable inlet and outlet are not suitable for random conversion, and the optimal benefit can be obtained only by converting the inlet and outlet of the main optical cable when necessary; the optical cable connection shell is internally provided with the second fixing device, so that a trunk optical cable can select different cable inlets and outlets on the cable inlet and outlet end surfaces to enter the connection shell when necessary, and the operations of fixing, accommodating, configuring and the like related to the optical fiber accommodating disc support can still operate according to a set technical mode, so that the adverse effect caused by changing the main optical cable inlet and outlet is reduced, the application range of the cable inlet and outlet end surfaces is improved, and the technical quality of related operations is ensured.

Furthermore, the optical cable connection shell further comprises the first hollow tubular column and the second hollow tubular column, and a waterproof structure can be formed between the heat shrinkable tube and a cable which is about to penetrate through the hollow tubular column and enter the connection shell.

The present invention provides a cable connection housing, comprising: a cable entry and exit end face; a first hollow column, configured on the cable inlet and outlet end face, for a cable passing through in the middle of the cable branching and connecting operation, wherein the cable passes through the first hollow column in a hairpin shape; and a joint filling waterproof auxiliary device which is wrapped on the cable in the hairpin shape to form a first waterproof structure.

The present invention further provides a cable connection housing, comprising: a cable entry and exit end face comprising a first hollow tubular column; a cable passing through the first hollow tubular string in a diagonal manner; a joint filling waterproof auxiliary device which wraps the cable bent oppositely to form a first waterproof structure; and the elastic shrinkage pipe is used for shrinking and wrapping the cable of the first waterproof structure and the outside of the first hollow pipe column to form a second waterproof structure.

Drawings

Fig. 1(a) to (E) are schematic diagrams of an optical cable connection housing 1 with a caulking waterproof auxiliary device used in example 1 of the present application;

fig. 2 is a schematic view of an optical cable connection shell cable inlet and outlet end face with a joint sealing waterproof auxiliary device used in embodiment 1 of the present application;

FIG. 3 is a schematic view of the inside of an optical cable connection housing with a joint sealing waterproof auxiliary device used in example 1 of the present application;

fig. 4 is a schematic view of the inside of an optical cable connection housing with a caulking waterproof auxiliary device used in embodiment 1 of the present application.

Detailed Description

The present invention provides an optical cable connection shell with a sealing waterproof auxiliary device, which can be fully understood from the following embodiments, so that those skilled in the art can implement the present invention without departing from the spirit and scope of the present invention.

Example 1

Referring to fig. 1(a) to fig. 1(E), there is shown a schematic diagram of an optical cable connection housing 1 with a sealing waterproof auxiliary device used in embodiment 1 of the present application, which has a cable entry and exit end face 2, the cable entry and exit end face 2 is formed with a first hollow tubular column 3 (fig. 1(a)), the connection housing further has a sealing waterproof auxiliary device and an elastic shrinkage tube 4, and the sealing waterproof auxiliary device includes two semicircular cable tightening housings 401 with grooves for accommodating two optical cables, a tightening screw 402, a waterproof adhesive tape 403 with two sticky sides and plasticity, and a waterproof elastomer adhesive tape 404 with one sticky side (fig. 1 (B)). When the optical cable 5 to be subjected to midway leading and branching connection operation is bent without cutting off the optical fiber core wires 6, and is ready to pass through the first hollow tubular column 3 of the cable inlet and outlet end face 2 to enter the connection shell 1 in a double-strip optical cable mode, the waterproof treatment operation comprises the steps of firstly laying a waterproof adhesive tape 403 with double stickiness and plasticity on one side of a semicircular cable tight-bound shell 401 in which the double-strip optical cable is accommodated, wrapping and winding the waterproof adhesive tape 403 with double stickiness and plasticity on the part of the optical cable 5 subjected to midway leading and branching connection operation and prepared to be combined with the cable tight-bound shell 401 in the double-strip optical cable mode, locking the two semicircular cable tight-bound shells 401 by a clamping screw 402 to form a cylindrical waterproof structure, and then removing the redundant sticky waterproof adhesive tape 403 with double stickiness and plasticity extruded at the outer side seams of the two semicircular cable tight-bound shells 401 due to locking, winding two semicircular cable tight-bound shells 401 formed into a cylindrical shape with an elastomer waterproof adhesive tape 404 having one surface with adhesive, and forming a first waterproof structure between the two optical cables 5 and the cable tight-bound shells 401 (fig. 1 (C)); then the elastic shrinkage tube 4 is sleeved into the optical cable 5 which is formed with the first waterproof structure and is about to perform the midway leading and branching connection operation to prepare the optical cable 5 which is subjected to waterproof treatment by the elastic shrinkage tube 4, the optical cable 5 which is formed with the first waterproof structure is bent under the condition of not cutting off the optical fiber core wire 6, then the optical cable 5 passes through the first hollow column 3 in the form of double optical cables to enter the connection shell 1 and is fixed, and then the elastic shrinkage tube 4 is used for receiving and bundling to cover the outside of the first hollow column 3 and the similar cylindrical column body of the first hollow column 3 which is not penetrated by the first waterproof structure to form a second waterproof structure (figure 1(D)), namely the waterproof treatment operation between the midway leading and branching optical cable 5 and the cable inlet and outlet end face 2 is completed (figure 1 (E)).

Please refer to fig. 2, which is a schematic diagram of a cable entrance and exit end surface 2 of an optical cable connection shell 1 with a joint sealing waterproof auxiliary device used in embodiment 1 of the present application, the cable entrance and exit end surface 2 is further formed with a second hollow pipe column 7 for an optical cable 8 to be subjected to a straight connection and branch connection operation to pass through and enter and exit the connection shell 1, and the second hollow pipe column 7 may also be wrapped around the outside of the second hollow pipe column 7 by an elastic shrinkage pipe 4 and wrapped around a portion of the cable 8 passing through the second hollow pipe column 7 and entering the connection shell 1 to be connected to the outer end of the second hollow pipe column 7, so as to form a waterproof structure (fig. 2). When the outer diameters of the second hollow pipe column 7 and the cable 8 are small or scratched, the elastic waterproof tape 404 with single surface sticky can be used for winding to expand the outer diameter to a size suitable for the contracting and wrapping of the elastic shrinkage pipe 4 to prevent water and fill the scratch.

Please refer to fig. 3, which is a schematic diagram of the inside of an optical cable connection shell 1 with a joint sealing waterproof auxiliary device used in embodiment 1 of the present application, wherein a first fixing device 9 is further disposed inside the connection shell 1, and the first fixing device 9 is a stainless steel tightening ring 10, so that an optical cable 8 introduced into the connection shell 1 is externally fixed to the first fixing device 9.

Please refer to fig. 4, which is a schematic diagram of the inside of an optical cable connection shell 1 with a joint sealing waterproof auxiliary device used in embodiment 1 of the present application, wherein an optical fiber accommodating disc support 11 is further disposed inside the connection shell 1, and a position of an inlet and outlet of the first hollow tubular column 3 of the cable inlet and outlet end surface 2 for a trunk optical cable to pass through is disposed at a position where a linear stroke of the trunk optical cable 5 after entering the connection shell 1 is not blocked and interfered by an optical fiber accommodating disc 12 on the optical fiber accommodating disc support 11; and a second fixing device 13 is further disposed inside the connection housing 1 for fixing the optical fiber accommodation disc holder 11, and the second fixing device 13 can be used for fixing the optical fiber accommodation disc holder 11 at different positions according to the difference of the cable entrance and exit positions of the cable entrance and exit end face 2 for passing the trunk optical cable 5 for midway branch connection or the trunk optical cable 501 for straight connection (fig. 4). In addition, in the optical cable connection shell 1 with a caulking waterproof auxiliary device used in embodiment 1 of the present invention, the position of the entrance/exit through which the second hollow tubular column 7 of the cable entrance/exit end face 2 passes the optical cable 8 that is linearly and divergently connected is also set at a position where the optical cable 7 is not blocked and interfered by the optical fiber accommodating tray 12 on the optical fiber accommodating tray holder 11 in the linear stroke after entering the connection shell 1 (fig. 3).

With the above description of embodiment 1, the optical cable connection shell with a joint filling waterproof auxiliary device of the present invention overcomes many defects in the prior art, such as insufficient functions, high cost, inconsistent construction quality, and safe construction, and the unified equipment and operation method greatly improve the construction quality and greatly reduce the maintenance cost of related businesses.

The present invention may be modified in various ways by those skilled in the art without departing from the scope of the appended claims.

Claims (11)

1. An optical cable connection housing with a caulking waterproof auxiliary device, the connection housing comprising:

at least one cable inlet and outlet end face, wherein at least one first hollow tubular column is formed on the at least one cable inlet and outlet end face, and is used for an optical cable which is to be subjected to midway branch leading and splicing operation and is prepared to be subjected to waterproof treatment by an elastic shrinkage tube;

at least one joint filling waterproof auxiliary device which can be combined with an optical cable which is about to pass through the at least one first hollow pipe column in the form of double optical cables and enter the wiring shell for midway leading and branching connection operation, and a first waterproof structure is formed at the position where the at least one joint filling waterproof auxiliary device is about to be coated by the elastic shrinkage pipe; and

at least one elastic shrinkage pipe, and the at least one elastic shrinkage pipe can be used for being bundled and coated on the outer part of the at least one first hollow pipe column and a part of the at least one joint filling waterproof auxiliary device to form a second waterproof structure.

2. The cable splice enclosure of claim 1, wherein the at least one caulking waterproofing aid comprises one selected from the group consisting of cable tie shells, packing screws, tacky and moldable waterproofing glue, elastomeric waterproofing liners, and combinations thereof.

3. The cable splice enclosure of claim 1, wherein said at least one cable access end face further defines at least one second hollow column for passage of optical cables to be spliced in a straight line and spliced out of said enclosure.

4. The cable splice enclosure of claim 3, wherein the at least one second hollow post is wrapped around the exterior of the at least one second hollow post with a flexible shrink tube and also over a portion of the cable passing through the second hollow post into the splice enclosure and engaging the exterior end of the second hollow post to form a waterproof structure.

5. The cable splice enclosure of claim 4, further comprising at least one first securing means within the splice enclosure, the at least one first securing means being secured to the at least one first securing means outside of the cable introduced into the splice enclosure by one of the group consisting of a cinch ring, a cinch strap, a cinch clip, and combinations thereof.

6. An optical cable splice enclosure as claimed in claim 5, further comprising at least one optical fibre tray support within the splice enclosure, the at least one cable entry and exit end face being positioned at an entry and exit opening for the trunk optical cable to pass through, the at least one cable entry and exit end face being positioned at a location where the linear travel of the trunk optical cable after entry into the splice enclosure is not obstructed and interfered by the optical fibre tray on the at least one optical fibre tray support.

7. The fiber optic cable splice enclosure of claim 6, further comprising access openings in the at least one cable access end face for passage of linearly and divergently spliced fiber optic cables therethrough, the access openings being positioned so as to be unobstructed and interfere with linear travel of the fiber optic cables after entering the splice enclosure by the fiber optic trays on the at least one fiber tray support.

8. An optical cable splice enclosure as claimed in claim 7, further comprising at least one second securing means within the splice enclosure for securing at least one optical fibre tray support, the at least one second securing means being adapted to secure the at least one optical fibre tray support in different positions in response to different positions of the at least one cable entry and exit end face through which a main optical fibre cable passes.

9. The cable junction box of claim 8, wherein the first hollow tubing string and the second hollow tubing string are also formed of heat shrinkable tubing to form a waterproof structure with the cable about to pass through the hollow tubing strings into the junction box.

10. A cable termination enclosure, comprising:

a cable entry and exit end face;

a first hollow column, configured on the cable inlet and outlet end face, for a cable passing through in the middle of the cable branching and connecting operation, wherein the cable passes through the first hollow column in a hairpin shape; and

and the joint filling waterproof auxiliary device is wrapped on the cable in the hairpin shape to form a first waterproof structure.

11. A cable splice enclosure, comprising:

a cable entry and exit end face comprising a first hollow tubular column;

a cable passing through the first hollow tubular string in a diagonal manner;

a joint filling waterproof auxiliary device which wraps the cable bent oppositely to form a first waterproof structure; and

and the elastic shrinkage pipe is used for shrinking and wrapping the cable of the first waterproof structure and the outside of the first hollow pipe column to form a second waterproof structure.