Optical fiber welding box capable of preventing optical fiber core wire from being twisted and broken and installation structure
By using positioning wires and positioning columns to fix the optical cables in the fiber splicing box, the problem of the optical fiber core wire being easily crimped when moving is solved, and the stability and safety of the optical fiber connection are improved.
Patent Information
- Application Number
- CN202421730218.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-19
AI Technical Summary
When the existing fiber splicing box is moved or flipped, the fiber core wire is easily twisted, resulting in the fiber needing to be re-arranged and welded.
An optical fiber welding box with anti-stranded fiber core wire is designed, and the optical cable is wrapped with a left positioning wire and a right positioning wire, and is fixed by a left positioning column and a right positioning column to ensure that the optical cable is not rotated when moving and avoids being twisted.
It effectively prevents the fiber core wire from being twisted off when moving or flipped, reduces the frequency of fiber re-arrangement and welding, and improves the stability and safety of fiber connections.
Smart Images
Figure CN222913931U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of optical fibers, in particular to an optical fiber fusion box and an installation structure for preventing optical fiber core wires from being twisted off. Background Art
[0002] Fiber fusion box, also known as fiber optic cable junction box, is where the ends of the optical cables are connected, and then connected to the optical switch through the fiber optic jumper. It can prevent material aging caused by heat, cold, light, oxygen, and microorganisms in nature, and has excellent mechanical strength. The sturdy shell and main structure of the fiber optic fusion box can withstand the harshest environmental changes, and at the same time play the role of flame retardant and waterproof, so that vibration, impact, cable stretching, and twisting are protected.
[0003] In the process of optical fiber auxiliary installation and fusion splicing, we found that the popular optical fiber fusion box on the market has defects in its optical cable fixing device. The fused optical fiber box is moved and flipped many times, and the rotation of the optical fiber causes the self-protective steel wire on the optical cable to be twisted, thereby breaking the optical fiber core. The optical fiber core is made of glass, which is very easy to break. As a result, the optical fiber needs to be re-laid and fused. We found in the construction project that due to the complex on-site conditions, many work teams and frequent cross-operation, the popular optical fiber fusion box on the market has unsafe defects. Utility Model Content
[0004] The utility model aims to provide an optical fiber fusion box and an installation structure for preventing the optical fiber core from being twisted off, which utilizes two positioning wires on the optical cable to protect the optical fiber core from being twisted off.
[0005] A fiber fusion box to prevent optical fiber cores from being twisted and broken, comprising: a box body, the box body being provided with a wire inlet, a left clamping column, a right clamping column, and a clamping piece provided near the wire inlet in the box body, the clamping piece being installed on the left clamping column and the right clamping column, the clamping piece being used to clamp the optical cable, a left positioning column, a right positioning column, a left positioning wire, and a right positioning wire being provided in the box body, the first end of the left positioning wire being used to wrap around the optical cable and being tightened until the second end is installed on the left positioning column, the first end of the right positioning wire being used to wrap around the optical cable and being tightened until the second end is installed on the right positioning column, and the directions in which the left positioning wire and the right positioning wire wrap around the optical cable are opposite.
[0006] In one embodiment, the left positioning post is welded to the inner wall of the box body; or / and, the right positioning post is welded to the inner wall of the box body.
[0007] In one embodiment, the left clamping post is located between the wire inlet and the left positioning post; or / and, the right clamping post is located between the wire inlet and the right positioning post.
[0008] In one embodiment, the second end of the left positioning wire is wound around the left positioning post; and / or, the second end of the right positioning wire is wound around the right positioning post.
[0009] In one embodiment, the left positioning post is provided with an external thread, and two nuts are arranged on the left positioning post, and the two nuts clamp the second end of the left positioning wire; and / or, the right positioning post is provided with an external thread, and two nuts are arranged on the right positioning post, and the two nuts clamp the second end of the right positioning wire.
[0010] In one embodiment, a protective ring plate and a fixing grid are further arranged in the box body, the fixing grid is provided with a plurality of card slots, and the fixing grid is located inside the protective ring plate.
[0011] In one embodiment, the left positioning post, the right positioning post, and the cable inlet are distributed in a triangle.
[0012] An optical fiber fusion splicing box installation structure for preventing optical fiber core wires from being cut, an optical cable is inserted into the cable inlet of the fusion splicing box described in any one of the above, the first end of the left positioning wire is wound around the optical cable, and the first end of the right positioning wire is wound around the optical cable.
[0013] In one embodiment, the left positioning wire and the right positioning wire are wound around the optical cable in opposite directions.
[0014] In one embodiment, the left positioning wire is tightened and straightened; and / or, the right positioning wire is tightened and straightened.
[0015] Compared with the prior art, the advantages of the optical fiber fusion splicing box for preventing optical fiber core wires from being cut of the present invention are:
[0016] 1. The left positioning wire 8 and the right positioning wire 7 are wound around the optical cable 1 to position the optical cable 1, so as to prevent the optical cable 1 from being rotated when the fusion splicing box 2 is moved, and avoid the optical fiber core wire from being cut due to the rotation of the optical cable 1.
[0017] 2. The left positioning wire 8 and the right positioning wire 7 are wound around the optical cable 1 in opposite directions. Pre-tightening forces in two rotational directions are applied to the optical cable 1, and any tendency of the optical cable 1 to rotate in either direction is restricted, avoiding the rotation of the optical cable 1 in two directions.
[0018] Through the following description and in conjunction with the accompanying drawings, the present invention will become clearer, and these drawings are used to explain the embodiments of the present invention. Description of the Drawings
[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0020] Figure 1 is a schematic structural diagram of an optical fiber splicing box and an installation structure for preventing optical fiber cores from being cut off in an embodiment of the present invention;
[0021] Figure 2 is a top view structural diagram of a box body and an installation structure in an embodiment of the present invention.
[0022] Wherein, 1. optical cable, 2. splicing box, 3. left positioning post, 4. right positioning post, 5. right pressing post, 6. left pressing post, 7. right positioning wire, 8. left positioning wire, 9. clip, 10. optical fiber core group with soft silicone sleeve, 11. bare optical fiber core group, 12. heat-shrinkable silicone protection tube, 13. optical fiber core group coiled on the protection ring plate, 14. protection ring plate, 16. fixed grid, 17. optical fiber tail line joint, 18. optical fiber coupler, 19. optical fiber jumper joint, 20. optical fiber jumper, 21, 22. inlet, 23, 24. nut, 25. fixed screw hole, 26. box cover, 30. box body. Detailed implementation manners
[0023] Now, embodiments of the present invention will be described with reference to the drawings.
[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0025] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0026] As shown Figure 1-2 in the figure, an optical fiber splicing box 2 for preventing optical fiber core wires from being cut by twisting includes: a box body 30 and a box cover 26. The box body 30 is provided with an inlet 21. Near the inlet 21 in the box body 30, there are a left pressing column 6, a right pressing column 5, and a clip 9. The clip 9 is installed on the left pressing column 6 and the right pressing column 5, and the clip 9 is used to clamp the optical cable 1. In the box body 30, there are also a left positioning column 3, a right positioning column 4, a left positioning wire 8, and a right positioning wire 7. The first end of the left positioning wire 8 is used to wind the optical cable 1, and the second end is installed on the left positioning column 3. The first end of the right positioning wire 7 is used to wind the optical cable 1, and the second end is installed on the right positioning column 4. The left positioning wire 8 and the right positioning wire 7 are used to wind the optical cable 1 to position the optical cable 1, prevent the optical cable 1 from being rotated when the splicing box 2 is moved, and avoid the optical fiber core wires being cut due to the rotation of the optical cable 1. The box cover 26 can be buckled on the box body 30 and is connected through the fixing screw holes 25.
[0027] The left positioning column 3 is welded to the inner wall of the box body 30; or / and, the right positioning column 4 is welded to the inner wall of the box body 30. By using the welding method to fix the left positioning column 3 and the right positioning column 4, there are fewer additional parts in the splicing box 2, further avoiding touching and damaging the optical fiber core wires.
[0028] The left pressing column 6 is located between the inlet 21 and the left positioning column 3, and the right pressing column 5 is located between the inlet 21 and the right positioning column 4. After the optical cable 1 is inserted from the inlet 21, it is first covered by the clip 9 near the inlet 21, and the clip 9 presses the optical cable 1 against the inner wall of the box body 30 to prevent the optical cable 1 from coming out; then the outer circumference of the optical cable 1 is respectively wound by the left positioning wire 8 and the right positioning wire 7 for circumferential positioning to prevent the optical cable 1 from rotating.
[0029] The second end of the left positioning wire 8 is wound around the left positioning column 3, and the second end of the right positioning wire 7 is wound around the right positioning column 4. By winding the left positioning wire 8 on the left positioning column 3 and the right positioning wire 7 on the right positioning column 4, the left positioning wire 8 and the right positioning wire 7 can be effectively prevented from loosening.
[0030] The left positioning column 3 is provided with an external thread, and there are two nuts on the left positioning column 3. The two nuts clamp the second end of the left positioning wire 8; the right positioning column 4 is provided with an external thread, and there are two nuts 23, 24 on the right positioning column 4. The two nuts 23, 24 clamp the second end of the right positioning wire 7. The winding position of the left positioning wire 8 on the left positioning column 3 is between the two nuts on the left positioning column 3, and the two nuts are screwed close to each other to clamp the left positioning wire 8. The winding position of the right positioning wire 7 on the right positioning column 4 is between the two nuts 23, 24 on the right positioning column 4, and the two nuts 23, 24 are screwed close to each other to clamp the right positioning wire 7. Further avoid the left positioning wire 8 and the right positioning wire 7 from loosening, and tighten the optical cable 1 to prevent the optical cable 1 from rotating.
[0031] A protection ring plate 14 and a fixed grid 16 are further provided in the box body 30 . The fixed grid 16 is provided with a plurality of slots. The fixed grid 16 is located in the circle of the protection ring plate 14 .
[0032] The bare optical fiber core group 11 of the optical cable 1 is led out from the optical fiber core group 10 with a soft silicone sleeve, and after being coiled on the protective ring plate 14 for several turns, the single fibers are separated and respectively fused with the corresponding tail wires using an optical fiber fusion splicer and covered with a heat-melting silicone protective tube 12, and fixed on the card slot of the fixed grid 16, and then after being coiled on the protective ring plate 14 for several turns, the fiber tail wire connector 17 is used to plug into the corresponding optical fiber coupler 18; the optical fiber jumper 20 is plugged into the outer edge of the corresponding optical fiber coupler 18 using the optical fiber jumper connector 19, and the other end can be plugged into the photoelectric converter to realize single-loop communication; the number of optical fiber jumpers 20 is designed according to the needs of the site, And its model should be suitable for the single-mode and dual-mode characteristics of the optical cable 1; in this example, the fusion box 2 is 250mm long, 100mm wide, and 30mm thick. The height of the bolt column in the box does not exceed 30mm. The bolt column and the screw cap must have sufficient fixing strength. The protective ring plate 14 is oval and the inner diameter is not less than 36mm; the fixed grid 16 is made of silicone and is glued to the inner wall of the fusion box 2 with strong glue; the interface between the optical fiber coupler 18 and the fusion box 2 has sealing performance to prevent external moisture and dust from penetrating into the interior; the optical cable 1 matches the size of the line inlet 21 or 22 and has sealing performance to prevent external moisture and dust from penetrating into the interior.
[0033] The left positioning column 3, the right positioning column 4 and the cable inlet 21 are distributed in a triangular shape, so as to effectively tighten the optical cable 1 and prevent the optical cable 1 from rotating.
[0034] The optical cable 1 is installed on the fusion box 2. In the installation structure of the optical fiber fusion box 2 for preventing the twisting of the optical fiber core wire of this embodiment, the optical cable 1 is inserted into the line inlet 21 of the fusion box 2, and the first end of the left positioning wire 8 is wound around the outside of the optical cable 1, and the first end of the right positioning wire 7 is wound around the outside of the optical cable 1. The left positioning wire 8 and the right positioning wire 7 are wound around the optical cable 1 in opposite directions. Pre-tightening forces in two rotational directions are applied to the optical cable 1, and the optical cable 1 is constrained regardless of its tendency to rotate in either direction, thereby preventing the optical cable 1 from rotating in two directions. The left positioning wire 8 is tightened and straightened, and the right positioning wire 7 is tightened and straightened, which effectively tightens and constrains the rotation of the optical cable 1.
[0035] Preferably, in this embodiment, the left positioning wire 8 and the right positioning wire 7 are made of steel wires.
[0036] In this embodiment, more than two cable inlets 21 , 22 may be provided on the box body 30 for installing multiple optical cables 1 .
[0037] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.
Claims
1. An optical fiber fusion box for preventing the twisting of optical fiber core wires, characterized in that: include: A box body, the box body is provided with a wire inlet, and a left clamping column, a right clamping column, and a clamp are provided near the wire inlet in the box body, the clamp is installed on the left clamping column and the right clamping column, and the clamp is used to clamp the optical cable. The box body is also provided with a left positioning column, a right positioning column, a left positioning wire, and a right positioning wire. The first end of the left positioning wire is used to wrap around the optical cable and tighten until the second end is installed on the left positioning column. The first end of the right positioning wire is used to wrap around the optical cable and tighten until the second end is installed on the right positioning column. The directions of the left positioning wire and the right positioning wire winding the optical cable are opposite.
2. The optical fiber fusion box for preventing twisting of optical fiber core wires according to claim 1, characterized in that: The left positioning column is welded to the inner wall of the box body; or / and, the right positioning column is welded to the inner wall of the box body.
3. The optical fiber fusion box for preventing twisting of optical fiber core wires according to claim 1, characterized in that: The left clamping column is located between the wire inlet and the left positioning column; or / and, the right clamping column is located between the wire inlet and the right positioning column.
4. The optical fiber fusion box for preventing twisting of optical fiber cores according to claim 1, characterized in that: The second end of the left positioning wire is wound around the left positioning post; or / and, the second end of the right positioning wire is wound around the right positioning post.
5. The optical fiber fusion box for preventing twisting of optical fiber core wires according to claim 4, characterized in that: The left positioning column is provided with an external thread, and two nuts are provided on the left positioning column, and the two nuts clamp the second end of the left positioning wire; or / and, the right positioning column is provided with an external thread, and two nuts are provided on the right positioning column, and the two nuts clamp the second end of the right positioning wire.
6. The optical fiber fusion box for preventing twisting of optical fiber cores according to claim 1, characterized in that: The box body is also provided with a protection ring plate and a fixed grille, the fixed grille is provided with a plurality of slots, and the fixed grille is located inside the circle of the protection ring plate.
7. The optical fiber fusion splicing box for preventing twisting of optical fiber cores according to any one of claims 1 to 6, characterized in that: The left positioning column, the right positioning column and the line inlet are distributed in a triangle shape.
8. An optical fiber fusion box installation structure for preventing the twisting of optical fiber core wires, characterized in that: The optical cable is inserted into the cable inlet of the fusion box according to any one of claims 1 to 7, the first end of the left positioning wire is wound around the outside of the optical cable, and the first end of the right positioning wire is wound around the outside of the optical cable.