Underwater optical branching optical cable connector box

Abstract

The utility model discloses an underwater optical branching optical cable joint box, which comprises a box bottom and a box cover, the box bottom is provided with a cable inlet end and a cable outlet end, the cable inlet end is provided with at least one cable inlet hole, the cable outlet end is provided with at least two cable outlet holes, and at least one optical cable fixing plate corresponding to the cable inlet hole is arranged on the box bottom close to the cable inlet hole. The box bottom is provided with at least two optical cable fixing plates corresponding to the cable outlet holes at positions close to the cable outlet holes, the middle position of the box bottom is provided with a fiber melting disc, the middle position of the fiber melting disc is provided with a miniature branching device, and the miniature branching device is provided with at least one input end and at least two output ends; and the optical cable of the cable outlet hole is connected with the output end of the miniature splitter through fiber fusion. By means of the mode, the optical cable connector can be used for pipeline straight-through and branch connection of various underwater and buried optical cables, has the advantages of being high in sealing waterproof performance and reliability, and has particularly good underwater usability and adaptability.

Description

Technical Field

[0001] The utility model relates to the technical field of optical cable junction boxes, in particular to an underwater optical branching optical cable junction box. Background Art

[0002] Optical cable junction boxes are used in optical cable lines for communications to connect two or more optical cables together and have a connecting part that protects components. They are a must-have in the construction of optical cable line projects and are one of the most important equipment. The quality of optical cable junction boxes directly affects the quality and service life of optical cable lines.

[0003] Conventional optical cable junction boxes usually connect optical cables to each other, which is suitable for overhead, pipeline, underground and other usage scenarios. However, this connection method does not provide good protection for the optical cables, especially the poor sealing of the optical cables entering the interface. It does not have long-term and high-reliability waterproof performance when used in fully underwater environments, which can easily lead to a short service life or frequent failures of the optical cables after laying, increasing construction costs. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide an underwater optical branching cable junction box, which can be used for pipeline straight-through and branch connection of various underwater and buried optical cables, has the characteristics of high sealing and waterproofness, simple operation, high reliability, and has particularly good underwater usability and adaptability.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide an underwater optical branching cable junction box, comprising a box bottom and a box cover connected to each other, the box bottom having a cable inlet end and a cable outlet end, the cable inlet end having at least one cable inlet hole, and the cable outlet end having at least two cable outlet holes,

[0006] At least one optical cable fixing plate corresponding to the cable inlet hole is provided on the bottom of the box near the cable inlet hole, and at least two optical cable fixing plates corresponding to the cable outlet holes are provided on the bottom of the box near the cable outlet hole.

[0007] A fiber splicing tray is provided in the middle of the box bottom, and a micro splitter is also installed in the middle of the fiber splicing tray. The micro splitter has at least one input end and at least two output ends.

[0008] The optical cable of the cable entrance hole is connected to the input end of the micro splitter by fiber fusion to achieve optical signal input conduction; the optical cable of the cable exit hole is connected to the output end of the micro splitter by fiber fusion to achieve optical signal connectivity.

[0009] In a preferred embodiment of the utility model, a circle of first mounting holes is evenly distributed around the box bottom, embedded nuts are reserved in the first mounting holes, and a circle of second mounting holes is evenly distributed around the box cover. The box bottom and the box cover are assembled by correspondingly snapping the first mounting holes and the second mounting holes and locked with a locking member to form a junction box body.

[0010] In a preferred embodiment of the utility model, a sealing groove is provided around the bottom of the box, the width and depth of the sealing groove are at least twice that of a conventional joint box, and a sealing strip is provided in the sealing groove.

[0011] In a preferred embodiment of the present invention, both ends of the cable inlet hole are provided with at least two layers of sealing rings, and both ends of each cable outlet hole are also provided with at least two layers of sealing rings.

[0012] In a preferred embodiment of the utility model, the cable inlet and the cable outlet are both provided with glue injection holes, and the sealing glue is injected into the interior of the box body through the glue injection holes to form a glue seal.

[0013] In a preferred embodiment of the utility model, the optical cable at the cable inlet end and the optical cable at the cable outlet end are tied to corresponding optical cable fixing plates through optical cable locking hose clamps.

[0014] In a preferred embodiment of the present invention, the micro splitter is pre-fixedly mounted on the fiber splicing tray in a detachable manner.

[0015] The beneficial effects of the utility model are as follows: the junction box adopts one entry and two places, and double sealing measures of sealing ring and glue filling are adopted at the entry and exit of the optical cable to enhance the sealing performance; an integrated sealing part is adopted around the box body, and the sealing grooves around are widened and deepened, and the sealing performance is good; the waterproof sealing performance of the junction box is significantly improved, which can not only meet the conventional usage scenarios, but also can be used in special environments such as fully underwater, reducing the probability of failure of conventional products in full water environment, bringing great convenience to later maintenance, and has great promotion and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0017] Figure 1 It is a structural schematic diagram of a preferred embodiment of the bottom of an underwater optical splitting optical cable joint box of the utility model;

[0018] Figure 2It is a structural schematic diagram of a preferred embodiment of a box cover for an underwater optical splitting optical cable junction box of the utility model;

[0019] Figure 3 It is a partial enlarged structural schematic diagram of the cable inlet end of the underwater optical splitting optical cable junction box of the utility model;

[0020] Figure 4 It is a partial enlarged structural schematic diagram of the cable outlet end of the underwater optical splitting optical cable junction box of the utility model;

[0021] Figure 5 It is a structural schematic diagram of a preferred embodiment of a micro splitter for underwater optical splitting optical cable junction box of the utility model;

[0022] The markings of the components in the accompanying drawings are as follows:

[0023] 1. Box bottom, 1-1, first mounting hole, 1-2, cable entry end, 1-3, cable exit end, 1-4, cable entry hole, 1-5, cable exit hole, 2. Box cover, 2-1, second mounting hole, 3. Sealing groove, 3-1, sealing strip, 4, optical cable fixing plate, 5, optical cable locking throat clamp, 6, sealing ring, 7, sealing glue, 8, glue injection hole, 9, fiber splicing tray, 10, micro splitter, 10-1, input end, 10-2, output end, 11, cable entry, 12, cable exit. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The utility model relates to a preferred embodiment of an underwater optical branching optical cable junction box.

[0027] See also Figures 1 to 5 :

[0028] The underwater optical branching cable junction box comprises a box bottom 1 and a box cover 2 connected to each other, wherein the box bottom 1 is evenly distributed with a circle of first mounting holes 1-1, and embedded nuts are reserved in the first mounting holes 1-1, and the box cover 2 is evenly distributed with a circle of second mounting holes 2-1. The box bottom 1 and the box cover 2 are assembled by correspondingly snapping the first mounting holes 1-1 and the second mounting holes 2-1 and are locked by a locking member to form a junction box body.

[0029] In an exemplary embodiment, the box bottom 1 has a cable entry end 1-2 and a cable exit end 1-3, the cable entry end 1-2 has at least one cable entry hole 1-4, and the cable exit end 1-3 has at least two cable exit holes 1-5.

[0030] Furthermore, at least one optical cable fixing plate 4 corresponding to the cable entry hole 1-4 is provided on the box bottom 1 near the cable entry hole 1-4, and at least two optical cable fixing plates 4 corresponding to the cable exit hole 1-5 are provided on the box bottom 1 near the cable exit hole 1-5, and the optical cable at the cable entry end 1-2 and the optical cable at the cable exit end 1-3 are tied to the corresponding optical cable fixing plates 4 through optical cable locking hose hoops 5.

[0031] In an exemplary embodiment, a fiber splicing tray 9 is provided in the middle of the box bottom 1, and a micro splitter 10 is fixedly installed in a detachable manner in the middle of the fiber splicing tray 9, and the micro splitter 10 has at least one input end 10-1 and at least two output ends 10-2:

[0032] The optical cable of the cable entrance hole 1-4 is connected to the input end 10-1 of the micro splitter 10 by fiber fusion to achieve optical signal input conduction; the optical cable of the cable exit hole 1-5 is connected to the output end 10-2 of the micro splitter 10 by fiber fusion to achieve optical signal connectivity.

[0033] In an exemplary embodiment, the box bottom 1 has a circle of sealing grooves 3 around it, and the width and depth of the sealing grooves 3 are at least twice that of a conventional joint box to enhance the sealing performance. A circle of sealing strips 3 - 1 is arranged in the sealing grooves 3 .

[0034] Furthermore, both ends of the cable inlet hole 1-4 are provided with at least two layers of sealing rings 6, and both ends of each cable outlet hole 1-5 are also provided with at least two layers of sealing rings 6, and the cable inlet end 1-2 and the cable outlet end 1-3 are both provided with a glue injection hole 8, and the sealing glue 7 is injected into the interior of the box body through the glue injection hole 8 to form a glue seal.

[0035] In this way, both the position where the optical cable enters and the position where the optical cable exits are filled with the sealing ring 6 and the sealing glue 7 for double sealing, which greatly enhances the sealing performance.

[0036] The connection process of the optical fiber signal of the utility model for underwater optical splitting optical cable junction box is:

[0037] The outdoor incoming cable 11 has 1 to 2 optical fibers for inputting optical signals. The incoming cable 11 passes through the two sealing rings 6 of the incoming cable end 1-2 successively, is initially fixed in the incoming cable hole 1-4 of the box bottom 1, and is tied to the optical cable fixing plate 4 of the incoming cable end 1-2 with an optical cable locking hose clamp 5 to ensure that the incoming optical cable is firmly fixed;

[0038] Then the tied incoming cable is stripped, and a certain length of optical fiber is reserved to enter the fiber splicing tray 9, and the fiber splicing connection is performed with the input end 10-1 of the pre-fixed micro optical splitter 10 to realize the conduction of the optical fiber signal input;

[0039] The outgoing cable 12 has multiple optical fibers, which are successively inserted into the two sealing rings 6 at the outgoing cable ends through the box bottom 1, and then tied to the optical cable fixing plate 4 at the outgoing cable ends 1-3 with the optical cable locking throat clamp 5, and initially fixed in the cable outgoing holes 1-5 at the corresponding positions of the box bottom 1, and then the multiple optical fibers in the outgoing cable 12 are connected to the output end 10-2 of the micro optical splitter 11 by fiber fusion, thereby forming the distribution of the optical link and the connection of the optical fiber signal.

[0040] The utility model has the following beneficial effects on the underwater optical splitting cable junction box:

[0041] The junction box adopts one entry and two places, and the optical cable entry and exit places adopt double sealing measures of sealing ring and glue filling to enhance the sealing performance;

[0042] The box body is equipped with integrated seals around it, and the sealing grooves around it are widened and deepened, with good sealing performance;

[0043] The waterproof sealing performance of the joint box is significantly improved. It can not only meet the conventional usage scenarios, but also be used in special environments such as full underwater. It reduces the probability of failure of conventional products in full water environments, brings great convenience to later maintenance, and has great promotion and application value.

[0044] The construction is convenient and can be completed without the use of special tools;

[0045] Improve the service life of the optical branch cable junction box, ensure high reliability after laying, reduce the failure rate and reduce the operation and maintenance costs.

[0046] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An underwater optical branching cable junction box, comprising a box bottom and a box cover connected to each other, characterized in that: The box bottom has a cable entry end and a cable exit end, the cable entry end has at least one cable entry hole, and the cable exit end has at least two cable exit holes. At least one optical cable fixing plate corresponding to the cable inlet hole is provided on the bottom of the box near the cable inlet hole, and at least two optical cable fixing plates corresponding to the cable outlet holes are provided on the bottom of the box near the cable outlet hole. A fiber splicing tray is provided in the middle of the box bottom, and a micro splitter is also installed in the middle of the fiber splicing tray. The micro splitter has at least one input end and at least two output ends. The optical cable of the cable entrance hole is connected to the input end of the micro splitter by fiber fusion to achieve optical signal input conduction; the optical cable of the cable exit hole is connected to the output end of the micro splitter by fiber fusion to achieve optical signal connectivity.

2. The underwater optical branching cable junction box according to claim 1, characterized in that: A circle of first mounting holes is evenly distributed around the box bottom, and embedded nuts are reserved in the first mounting holes. A circle of second mounting holes is evenly distributed around the box cover. The box bottom and the box cover are assembled by correspondingly snapping the first mounting holes and the second mounting holes and locked with a locking member to form a junction box body.

3. The underwater optical branching cable junction box according to claim 1, characterized in that: The box bottom is provided with a circle of sealing grooves around it, the width and depth of the sealing grooves are at least twice that of conventional joint boxes, and a circle of sealing strips is arranged in the sealing grooves.

4. The underwater optical branching cable junction box according to claim 2, characterized in that: Both ends of the cable inlet hole are provided with at least two layers of sealing rings, and both ends of each cable outlet hole are also provided with at least two layers of sealing rings.

5. The underwater optical branching cable junction box according to claim 4, characterized in that: The cable inlet and outlet ends are both provided with glue injection holes, and the sealing glue is injected into the box body through the glue injection holes to form a glue seal.

6. The underwater optical branching cable junction box according to claim 1, characterized in that: The optical cable at the cable inlet end and the optical cable at the cable outlet end are bound on corresponding optical cable fixing plates through optical cable locking hose clamps.

7. The underwater optical branching cable junction box according to claim 1, characterized in that: The micro splitter is pre-fixedly installed on the fiber splicing tray in a detachable manner.

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