Optical fiber connector box

Abstract

The utility model discloses an optical fiber splice closure, which comprises a bottom shell and a surface cover, the surface cover comprises at least one cable inlet and a plurality of wiring holes, the wiring holes are provided with optical fiber connector joints, the surface cover is fixedly arranged on the bottom shell, a metal coil is arranged at the connecting part of the surface cover and the bottom shell, and the bottom shell is provided with a groove. The groove surrounds the side edge of the bottom shell, and the metal coil is arranged in the groove; the metal coil induction heating engineering plastic is added for high-frequency induction welding, the heating speed is extremely high, by adjusting the frequency and the design of the induction coil, the heating area can be accurately controlled, the heat affected zone is reduced, the metal coil increases the welding strength, the welding sealing is better, and the mechanical properties such as the structural strength and the welding rigidity are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber box technology, specifically to an optical fiber connector box. Background Technology

[0002] Fiber optic boxes, also known as optical cable splice boxes, are passive components that provide reliable continuity for optical cables. They are used for the protection of optical cable splices and can be used in aerial, direct-buried, equipment room, and duct-laid optical cable lines to connect two sections of optical cable.

[0003] To increase the sealing of the fiber optic box, the box is usually connected by welding. However, traditional welding methods have a slow heating speed and cannot accurately control the heating area, which can have a thermal impact on other structures. Utility Model Content

[0004] To solve the above technical problems, this utility model provides an optical fiber connector box.

[0005] The present invention adopts the following technical solution:

[0006] An optical fiber connector box includes a bottom shell and a front cover. The front cover includes at least one cable inlet and several wiring holes. Optical fiber connectors are installed in the wiring holes. The bottom shell has a groove that surrounds the side of the bottom shell. The front cover is snapped into the groove and disposed on the bottom shell. A metal coil is provided at the connection point between the two. The metal coil forms a welded fusion layer with the contact surface of the front cover and the contact surface of the bottom shell.

[0007] Preferably, the cover includes a cover frame, which is embedded in the groove. A high-frequency induced welding process is used to form a welding molten layer between the metal coil and the contact surface of the bottom shell and the cover, thereby fixing the bottom shell and the cover together.

[0008] Preferably, the two cable inlets are symmetrically arranged on opposite sides of the cover, and the fiber optic connector extends into the fiber optic connector box through the cable inlets.

[0009] Preferably, the cover includes a plurality of wiring cavities, each wiring cavity including a first wiring surface and a second wiring surface, and the wiring holes are respectively disposed through the first wiring surface and the second wiring surface.

[0010] Preferably, the first wiring surface and the second wiring surface have a V-shaped structure.

[0011] Preferably, the plurality of wiring cavities are equidistantly arranged on the faceplate and are inclined.

[0012] Preferably, the inner side of the cover is provided with at least one optical splitter slot, into which an optical splitter can be inserted.

[0013] Preferably, the cover is provided with at least one QR code insertion block.

[0014] Preferably, the metal coil is a closed steel wire coil.

[0015] Preferably, the groove has a bottom for receiving the wire ring, so that the wire ring is limited and fixed on the bottom of the receiving cavity. The cover frame has a protrusion with a cross-sectional area corresponding to the area of ​​the bottom of the receiving cavity, and the position of the protrusion is directly opposite the metal coil.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. This utility model adds a metal enclosed coil between the bottom shell and the top cover. The addition of the metal coil allows for high-frequency induced welding through induction heating of engineering plastics, followed by pressure application, to form a plastic welding layer between the bottom shell and the top cover on the metal coil. This structure simplifies the sealing process of the fiber optic connector box and achieves better sealing performance.

[0018] 2. The process is simple to operate. For example, the heating speed is extremely fast. By adjusting the frequency and the design of the induction coil, the heating area can be precisely controlled, the heat-affected zone can be reduced, and it can be adapted to different models of junction box shell structures.

[0019] 3. The groove is provided with a bottom cavity for receiving the wire ring, so that the wire ring is limited and fixed on the bottom cavity. The cover frame is provided with a protrusion with a cross-sectional area corresponding to the bottom area of ​​the cavity. The position of the protrusion is directly opposite the metal coil. After the metal coil is induction heated, the position of the protrusion is directly opposite the metal coil. Then, pressure is applied to make the protrusion, the metal coil, and the groove completely fused together, resulting in better welding and sealing, and significantly improved mechanical properties such as structural strength and welding rigidity.

[0020] 4. The V-shaped structure of the wiring surface makes the fiber optic junction box more compact, saving space and materials as much as possible. The addition of a QR code plug allows customers to customize the display of information according to their own needs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the structure of this utility model without the fiber optic connector installed.

[0023] Figure 3 This is an exploded view of the present invention.

[0024] Figure 4 This is a schematic diagram of the internal structure of the faceplate of this utility model.

[0025] Figure 5This is a cross-sectional view and a partial enlarged view of the present invention.

[0026] In the figure, the bottom shell is 10, the groove is 11, and the metal coil is 110;

[0027] 20. Cable inlet 21. Wiring cavity 22. Cover frame 23. Optical splitter slot 24. QR code plug 25. Wiring hole 220. First wiring surface 221. Second wiring surface 222. Optical splitter 240. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] Example 1:

[0030] like Figure 1-3 As shown, this utility model provides an optical fiber connector box, including a bottom shell 10 and a front cover 20. The front cover 20 includes two cable inlets 21 and eight wiring holes 220, and optical fiber connectors are installed in the wiring holes 220 respectively.

[0031] The structure of the 20-part faceplate is as follows:

[0032] Two cable inlets 21 are symmetrically arranged on opposite sides of the cover 20. Fiber optic connectors extend into the fiber optic connector box through the cable inlets 21, which are compatible with various mainstream fiber optic connectors. The cover 20 includes several wiring chambers 22, each comprising a first wiring surface 221 and a second wiring surface 222. Wiring holes 220 are respectively provided through the first wiring surface 221 and the second wiring surface 222. The first wiring surface 221 and the second wiring surface 222 have a V-shaped structure, making the fiber optic connector box structure more compact and saving space and materials as much as possible. The four wiring chambers 22 are equidistantly arranged on the cover 20 and angled, increasing the usable space of the box, while the angled angle makes plugging and unplugging connectors more convenient. The cover 20 is provided with two QR code inserts 25, allowing customers to customize the display of required information according to their needs.

[0033] The sealing connection structure between the bottom shell 10 and the front cover 20 is as follows:

[0034] The bottom shell 10 is provided with a groove 11, which surrounds the side of the bottom shell 10. The face cover 20 includes a face cover frame 23, which is embedded in the groove 11. A metal coil 110 is provided at the connection between the two. The metal coil 110 forms a welded molten layer with the contact surface of the face cover 20 and the contact surface of the bottom shell 10. The welded molten layer is formed by the contact surface of the metal coil (110) with the contact surface of the bottom shell (10) and the face cover (20) through a high-frequency induced welding process, thereby fixing the bottom shell 10 and the face cover 20 together.

[0035] The groove has a bottom cavity for receiving the wire ring, which limits and fixes the wire ring on the bottom cavity. The cover frame 23 has a protrusion with a cross-sectional area corresponding to the area of ​​the bottom cavity. The position of the protrusion is directly opposite the metal coil. This structure makes the welding more precise and the formed weld fusion layer more solid.

[0036] In this embodiment, the fiber optic connector box, bottom shell 10, and top cover 20 are rectangular, and the metal coil is a closed rectangular steel wire loop.

[0037] The following details the operation process and principle of high-frequency induced welding: After the fiber optic connector is installed on the box, the bottom shell 10 and the top cover 20 are connected by high-frequency induced welding. The welding principle is as follows: The bottom shell 10 and the top cover 20 are joined together, with a metal coil 110 sandwiched in the middle. A high-frequency alternating current generated by an induction heating device passes through the induction coil, generating an alternating electromagnetic field around the coil. When the metal coil 110 is placed in this magnetic field, eddy currents are induced inside the metal coil 110. Due to the resistance of the conductor, heat is generated, thus heating the metal coil 110. The heated metal coil 110 heats the plastic of the bottom shell 10 and the top cover 20 in contact with it to the melting temperature. Then, under the pressure of the tooling, the contact areas of the bottom shell 10 and the top cover 20 melt and join together, thereby achieving the sealing of the fiber optic connector box.

[0038] Example 2:

[0039] like Figure 4 As shown, based on the above embodiment, two optical splitter slots 24 are symmetrically arranged on the inner side of the cover 20. The optical splitter slots 24 can be inserted into the optical splitter 240. The two optical splitter slots can produce a variety of input and output combinations: ① one 1:9 non-uniform ratio optical splitter; ② two 1:4 optical splitters (the two sides are the input ends); more possibilities can be made by using adapter plugs (such as 1:8 uniform ratio, 1:6 uniform ratio, etc.).

[0040] Example 3:

[0041] like Figure 5As shown, based on the above embodiment, the cover 20 includes a cover frame 23, which is embedded in the groove 11, and the bottom shell 10 and the cover 20 are fixedly connected by a high-frequency induced welding process.

[0042] The bottom shell 10 and the top cover 20 are connected by high-frequency induced welding. The welding principle is as follows: the bottom shell 10 and the top cover 20 are joined together, the top cover frame 23 is embedded in the groove 11, and a metal coil 110 is sandwiched between the top cover frame 23 and the groove 11. A high-frequency alternating current generated by an induction heating device passes through the induction coil, generating an alternating electromagnetic field around the coil. When the metal coil 110 is placed in this magnetic field, eddy currents are induced inside the metal coil 110. Due to the resistance of the conductive system, heat is generated, thus heating the metal coil 110. The heated metal coil 110 heats the plastic of the groove 11 and the top cover frame 23 in contact with it to the melting temperature. Then, under the pressure of the tooling, the contact areas of the bottom shell 10 and the top cover 20 melt and join together, thereby achieving the sealing of the fiber optic connector box.

[0043] The above are merely preferred embodiments of this utility model. The scope of protection of this utility model is defined by the scope of the claims. Any improvements and modifications made by those skilled in the art without departing from the spirit and scope of this utility model should also be considered as part of the scope of protection of this utility model.

Claims

1. A fiber optic connector cassette, comprising a bottom shell (10) and a front cover (20), the front cover (20) including at least one cable inlet (21) and a plurality of wiring holes (220), wherein fiber optic connectors are mounted in the wiring holes (220), characterized in that, The bottom shell (10) is provided with a groove (11) which surrounds the side of the bottom shell (10). The face cover (20) is inserted into the groove (11) and disposed on the bottom shell (10). A metal coil (110) is provided at the connection between the two. The metal coil (110) forms a welding molten layer with the contact surface of the face cover (20) and the contact surface of the bottom shell (10).

2. The fiber optic connector cassette according to claim 1, characterized in that, The face cover (20) includes a face cover frame (23), which is embedded in the groove (11). The metal coil (110) forms a welding molten layer with the contact surface of the bottom shell (10) and the face cover (20) through a high-frequency induced welding process, thereby fixing the bottom shell (10) and the face cover (20) together.

3. A fiber optic connector cassette according to claim 1 or 2, characterized in that, The two cable inlets (21) are symmetrically arranged on opposite sides of the faceplate (20), and the fiber optic connectors extend into the fiber optic connector box through the cable inlets (21).

4. The fiber optic connector cassette according to claim 3, characterized in that, The cover (20) includes a plurality of wiring cavities (22), each wiring cavity (22) including a first wiring surface (221) and a second wiring surface (222), and wiring holes (220) are respectively disposed on the first wiring surface (221) and the second wiring surface (222).

5. The fiber optic connector cassette according to claim 4, characterized in that, The first wiring surface (221) and the second wiring surface (222) have a V-shaped structure.

6. The fiber optic connector cassette according to claim 5, characterized in that, Multiple wiring cavities (22) are equidistantly arranged on the faceplate (20) and are inclined.

7. The fiber optic connector cassette according to claim 6, characterized in that, The inner side of the cover (20) is provided with at least one optical splitter slot (24), into which an optical splitter (240) can be inserted.

8. The fiber optic connector cassette according to claim 1, characterized in that, The faceplate (20) is provided with at least one QR code insert (25).

9. The fiber optic connector cassette according to claim 1, characterized in that, The metal coil (110) is a closed steel wire coil.

10. The fiber optic connector cassette according to claim 2, characterized in that, The groove (11) has a bottom for receiving the wire ring, so that the wire ring is limited and fixed on the bottom of the receiving cavity. The cover frame (23) has a protrusion with a cross-sectional area corresponding to the area of ​​the bottom of the receiving cavity, and the position of the protrusion is directly opposite the metal coil (110).

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