Optical fiber coupler with optical fiber bundle fixing structure

Abstract

The present invention discloses a fiber coupler with a fiber bundle fixing structure, which relates to the technical field of fiber couplers, and includes a coupler body, wherein two insertion tubes are fixedly connected to the left and right sides of the coupler body, and two vertical plates are fixedly connected to each of the two matching insertion tubes, and a plurality of the vertical plates are respectively located on the upper and lower sides of the corresponding insertion tubes, and each of the insertion tubes is provided with a preliminary clamping assembly, and the preliminary clamping assembly includes vertical boxes arranged on the upper and lower sides of the insertion tube, and two pneumatic rods are fixedly connected to the inner wall of each vertical box away from the insertion tube. The fiber coupler can neatly fix and arrange the internal optical fibers, and can ensure that the internal optical fibers are in a straight state during arrangement, thereby avoiding the situation that the optical fiber bundle becomes messy during long-term use, and at the same time, when replacing the optical fiber, the optical fiber can be quickly aligned with the two fixed ends, thereby improving the replacement efficiency of the optical fiber.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber couplers, and in particular to an optical fiber coupler with an optical fiber bundle fixing structure. Background Art

[0002] A fiber coupler is a fiber connection device used to realize optical signal splitting / combining. It can convert the optical signal at the input end into a usable optical signal at the output end. By connecting the two end faces of the optical fiber bundle, the optical energy output by the transmitting optical fiber can be coupled to the receiving optical fiber to the maximum extent, and the impact of its intervention in the optical link on the system is minimized.

[0003] During the use of the fiber coupler, the optical fiber in the middle part will become more scattered after long-term use. This is mainly because the fiber coupler may be affected by many factors during long-term operation. For example, small vibrations in the surrounding environment. Although these vibrations may not be easy to detect in daily life, the continuous accumulation will cause the optical fiber to gradually deviate from the original neat arrangement. It may also be due to temperature changes. The effect of thermal expansion and contraction causes the fixed position of the optical fiber to loosen, causing the optical fiber to become scattered;

[0004] When a fiber in a fiber coupler fails, the fiber must be replaced in time to ensure the normal operation of the optical communication system. However, due to the long-term use of the optical fiber, its internal structure may become complicated and chaotic. Various optical fibers are intertwined, and the identification may become unclear due to wear or aging. This series of problems makes it difficult for technicians to find both ends of the damaged fiber when replacing the optical fiber. They need to spend a lot of time and energy to carefully comb and check each optical fiber, which undoubtedly greatly affects the efficiency of optical fiber replacement. Not only that, the delay may cause the communication interruption to last longer, causing many inconveniences and losses to related companies and users.

[0005] Moreover, due to the scattered optical fibers, it is a very challenging task to align the two ends of the new optical fiber with the installation position when replacing the optical fiber. The scattered optical fibers will interfere with the technicians' vision and operating space, making it difficult for them to accurately determine the installation position of the new optical fiber. Therefore, it is necessary to design a fiber coupler with a fiber bundle fixing structure to solve the above problem. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings existing in the prior art, and to propose a fiber optic coupler with a fiber optic bundle fixing structure, which can neatly fix and arrange the internal optical fibers, and can ensure that the internal optical fibers are in a straight state during arrangement, thereby avoiding the fiber optic bundle from becoming disorganized during long-term use. At the same time, when replacing the optical fiber, the optical fiber can be quickly aligned with the two fixed ends, thereby improving the replacement efficiency of the optical fiber.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A fiber optic coupler with a fiber bundle fixing structure comprises a coupler body, two insertion tubes are fixedly connected on the left and right sides of the coupler body, and each two matching insertion tubes are fixedly connected to two vertical plates, and multiple vertical plates are respectively located on the upper and lower sides of the corresponding insertion tubes, and each insertion tube is provided with a preliminary clamping assembly, and the preliminary clamping assembly comprises vertical boxes arranged on the upper and lower sides of the insertion tube, and each vertical box is fixedly connected to two pneumatic rods on the inner wall of a side away from the insertion tube, and each two matching pneumatic rods are fixedly connected to a movable plate at their telescopic ends, and each insertion tube is slidably connected to two strip plates, and each adjacent side of each two matching strip plates is fixedly connected to multiple limit rods, and multiple limit rods on each two matching strip plates are staggered, and each strip plate is fixedly connected to a connecting rod on the adjacent side of the corresponding movable plate.

[0009] Preferably, straightening components are provided on the upper and lower sides of the coupler body, and the straightening components include two threaded rods rotatably connected to adjacent sides of the two vertical plates, and each of the threaded rods passes through the corresponding vertical box. Two U-shaped blocks are fixedly connected to the upper and lower sides of the coupler body, and the two threaded rods pass through the corresponding U-shaped blocks. The two U-shaped blocks are commonly penetrated by a cross bar that is rotatably connected, and the cross bar and the two threaded rods are provided with bevel gears that mesh with each other. A driving component is provided on the U-shaped block located on the rear side, and a plurality of the insertion cylinders are provided with a first strip opening, and a plurality of the connecting rods pass through the corresponding first strip openings.

[0010] Preferably, the driving assembly includes a rectangular box arranged on the U-shaped block, an electromagnet is embedded in the right inner wall of the rectangular box, a slider is slidably connected inside the rectangular box, the slider is elastically connected to the adjacent side of the electromagnet through a first spring, a rack is fixedly connected to the left side of the slider, the cross bar passes through the rectangular box, and a rotating gear meshing with the rack is provided on the cross bar.

[0011] Preferably, it also includes a secondary fixing component, which is arranged on the telescopic rods at the top and bottom of the coupler body, and the telescopic ends of every two matching telescopic rods are commonly fixedly connected with a pressure plate, and a second strip opening is provided on one side of the plurality of vertical boxes close to the U-shaped block, and the opposite sides of every two matching pressure plates are fixedly connected with an L-shaped rod, and each of the L-shaped rods passes through the corresponding second strip opening.

[0012] Preferably, the L-shaped rod is magnetic, the moving plate is made of an iron material, and the moving plate and the adjacent sides of the L-shaped rod attract each other.

[0013] Preferably, the coupler body is provided with a plurality of limit assemblies, and the limit assemblies include a plurality of movable grooves arranged on the inner wall of the coupler body, two of the movable grooves are slidably connected with a card block, and the plurality of card blocks are elastically connected to the inner walls of the corresponding movable grooves through a second spring, and the front and rear sides of the plurality of pressure plates are provided with limit grooves matching with the card blocks, and the side of the plurality of card blocks close to the pressure plate is an arc surface.

[0014] Preferably, a plurality of transverse plates are fixedly connected in the coupler body, and an alignment cylinder is passed through and fixedly connected to every two matching transverse plates.

[0015] Preferably, it also includes an auxiliary component, which includes auxiliary grooves arranged on multiple clamping blocks, each of which is slidably connected to an auxiliary block, each of which is elastically connected to the inner wall of the corresponding auxiliary groove through a third spring, and each of the auxiliary blocks has a sloped surface on one side close to the alignment tube.

[0016] The present invention has the following beneficial effects:

[0017] Compared with the prior art, by setting the preliminary pressing assembly and the secondary fixing assembly, when the optical fiber bundle is installed in the coupler body, multiple optical fibers are arranged flatly inside the coupler, and the optical fibers are fixed, so as to avoid the optical fibers being intertwined with each other during long-term use and becoming disorderly;

[0018] Compared with the prior art, by setting the straightening assembly, after the optical fiber is installed, the preliminary pressing assembly will be moved to straighten the optical fiber, so that the arrangement of the optical fiber inside the coupler can be more neat, so that during subsequent maintenance, the damaged optical fiber can be quickly found and replaced;

[0019] Compared with the prior art, by setting up multiple risers and alignment tubes, when replacing the optical fiber, it is only necessary to pass the new optical fiber through the corresponding alignment tube and the corresponding riser, so that the optical fiber connection can be quickly aligned with the fixed end, thereby improving the efficiency of optical fiber replacement and ensuring the transmission quality of subsequent optical signals;

[0020] Compared with the prior art, through the setting of the auxiliary component, after the pressure plate is limited, the elastic action of the third spring will generate a force on the two pressure plates, so that the two pressure plates can clamp the optical fiber as tightly as possible, avoiding the deviation of the optical fiber when straightening;

[0021] Compared with the prior art, by setting up multiple vertical plates, when the coupler body is placed, the coupler body will be at a certain distance from the ground, so that moisture and water on the ground are not easy to enter the coupler, thereby preventing the optical fiber inside the coupler from getting damp and improving the service life of the coupler.

[0022] In summary, when the optical fiber bundle is installed in the coupler body, the present invention can arrange and fix multiple optical fibers flatly, avoiding the disordered interweaving of optical fibers after long-term use, and the straightening component can move the preliminary pressing component to straighten the optical fiber after the optical fiber is installed, making the arrangement neater and facilitating the subsequent rapid discovery of damaged optical fibers and replacement. At the same time, when replacing the optical fiber, the new optical fiber can be quickly aligned with the fixed end through the corresponding part, thereby improving the replacement efficiency and ensuring the quality of optical signal transmission; the multiple vertical plates can also keep the coupler body at a certain distance from the ground, preventing moisture and water from the ground from entering, preventing the optical fiber from getting damp, and improving the service life of the coupler. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of an optical fiber coupler with an optical fiber bundle fixing structure proposed by the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0025] Figure 3 for Figure 1 A partial enlarged view of

[0026] Figure 4 for Figure 1 The left schematic diagram of

[0027] Figure 5 is an internal half-section diagram of a fiber coupler;

[0028] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0029] In the figure: 1 coupler body, 2 insertion cylinder, 3 vertical plate, 4 first strip opening, 5 threaded rod, 6 fixed block, 7 second strip opening, 8 L-shaped rod, 9 U-shaped block, 10 bevel gear, 11 pneumatic rod, 12 movable plate, 13 connecting rod, 14 rectangular box, 15 electromagnet, 16 first spring, 17 cross bar, 18 rotating gear, 19 rack, 20 strip plate, 21 limit rod, 22 telescopic rod, 23 pressure plate, 24 cross plate, 25 alignment cylinder, 26 movable groove, 27 second spring, 28 card block, 29 auxiliary groove, 30 third spring, 31 auxiliary block, 32 limit groove. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] Reference Figure 1-Figure 6 , an optical fiber coupler with an optical fiber bundle fixing structure, comprising a coupler body 1, two insertion tubes 2 are fixedly connected to the left and right sides of the coupler body 1, and each two matching insertion tubes 2 are fixedly connected to two vertical plates 3. When the coupler body 1 is placed, the two vertical plates 3 will contact the ground, so that there is a certain distance between the coupler body 1 and the ground, so as to prevent moisture from entering the coupler body 1 and extend the service life of the optical fiber in the coupler body 1. Multiple vertical plates 3 are respectively located on the upper and lower sides of the corresponding insertion tubes 2, and each insertion tube 2 is provided with a preliminary clamping assembly, which includes vertical boxes arranged on the upper and lower sides of the insertion tube 2, and each vertical box is away from the insertion tube 2. Two pneumatic rods 11 are fixedly connected to the inner wall of one side, and the telescopic ends of each two mating pneumatic rods 11 are fixedly connected with a movable plate 12. Two strip plates 20 are slidably connected in each insertion tube 2, and the adjacent sides of each two mating strip plates 20 are fixedly connected with a plurality of limit rods 21. The plurality of limit rods 21 on each two mating strip plates 20 are staggered, and the distance between each two adjacent limit rods 21 is the same as the width of the limit rod 21. Therefore, when the two strip plates 20 move relative to each other, the lower limit rod 21 will be inserted into the gap between the upper limit rods 21, and each strip plate 20 and the adjacent side of the corresponding movable plate 12 are fixedly connected with a connecting rod 13.

[0032] Among them, the upper and lower sides of the coupler body 1 are provided with straightening components, which include two threaded rods 5 rotatably connected to the adjacent sides of the two vertical plates 3, each threaded rod 5 penetrates the corresponding vertical box, and the upper and lower sides of the coupler body 1 are fixedly connected to two U-shaped blocks 9, the two threaded rods 5 penetrate the corresponding U-shaped blocks 9, and the two U-shaped blocks 9 are rotatably connected with a cross bar 17, and the cross bar 17 and the two threaded rods 5 are provided with mutually meshing bevel gears 10, and the U-shaped block 9 located at the rear side is provided with a driving component. A first strip opening 4 is provided on each of the multiple insertion tubes 2, and a plurality of connecting rods 13 pass through the corresponding first strip openings 4. The driving assembly includes a rectangular box 14 arranged on the U-shaped block 9, and an electromagnet 15 is embedded in the right inner wall of the rectangular box 14. A slider is slidably connected inside the rectangular box 14, and the adjacent sides of the slider and the electromagnet 15 are elastically connected by a first spring 16. A rack 19 is fixedly connected to the left side of the slider, and a cross bar 17 passes through the rectangular box 14. A rotating gear 18 meshing with the rack 19 is provided on the cross bar 17.

[0033] It also includes a secondary fixing component, which is arranged on the top and bottom telescopic rods 22 inside the coupler body 1. The telescopic ends of every two matching telescopic rods 22 are fixedly connected with a pressure plate 23. A second strip opening 7 is provided on one side of the multiple vertical boxes close to the U-shaped block 9. The opposite sides of every two matching pressure plates 23 are fixedly connected with an L-shaped rod 8. Each L-shaped rod 8 passes through the corresponding second strip opening 7. The L-shaped rod 8 is magnetic. The movable plate 12 is made of iron material. The adjacent sides of the movable plate 12 and the L-shaped rod 8 attract each other. When the movable plate 12 moves with the vertical box, the L-shaped rod 8 will be separated from the movable plate 12.

[0034] Among them, a plurality of limit assemblies are provided in the coupler body 1, and the limit assemblies include a plurality of movable grooves 26 arranged on the inner wall of the coupler body 1, and blocks 28 are slidably connected in the two movable grooves 26, and the plurality of blocks 28 are elastically connected to the inner walls of the corresponding movable grooves 26 through second springs 27, and the front and rear sides of the plurality of pressure plates 23 are provided with limit grooves 32 matching with the blocks 28, and the sides of the plurality of blocks 28 close to the pressure plates 23 are all arc surfaces, and when the pressure plate 23 moves downward, the pressure plate 23 will press against the blocks 28 and will first enter the limit groove 32, and when the pressure plate 23 moves downward to the specified position, the blocks 28 will enter the limit groove 32 to limit the pressure plate 23, and a plurality of cross plates 24 are fixedly connected in the coupler body 1, and an alignment cylinder 25 is fixedly connected and penetrated through every two matching cross plates 24.

[0035] It also includes an auxiliary component, which includes an auxiliary groove 29 arranged on a plurality of clamping blocks 28, each of which is slidably connected with an auxiliary block 31, each of which is elastically connected to the inner wall of the corresponding auxiliary groove 29 through a third spring 30, and each of which is an inclined surface on one side close to the alignment tube 25. After the clamping block 28 enters the limiting groove 32, there is a certain distance between the clamping block 28 and the inner wall of the limiting groove 32 on one side close to the telescopic rod 22, so that the auxiliary component can press the pressure plate 23 again and move a certain distance to further compress the optical fiber.

[0036] The present invention can explain its functional principle through the following operation mode: when inserting the optical fiber, the optical fiber is inserted from the insertion tube 2 on the left side, so that the other end of the optical fiber passes through the coupler body 1 and another corresponding insertion tube 2. Since the optical fiber is located in the space between the two limit rods 21 when inserted, the optical fiber is initially positioned. The staff continues to push one end of the optical fiber inward, so that the optical fiber passes through the corresponding alignment tube 25, and then extends from the insertion tube 2 on the right side. After the optical fiber is extended, the staff adjusts the position of the optical fiber so that the optical fiber in the insertion tube 2 on the right side is located between the two limit rods 21 parallel to the left side. According to the above method, multiple optical fibers are horizontally inserted into the coupler body 1;

[0037] When all the optical fibers are inserted, the staff controls the multiple pneumatic rods 11 on the left to stretch. The stretching of the two pneumatic rods 11 causes the corresponding two strip plates 20 to move relative to each other, thereby causing the multiple limiting rods 21 to move, thereby preliminarily fixing the optical fibers.

[0038] When the plurality of strip plates 20 move, the L-shaped rod 8 and the adjacent surfaces of the corresponding moving plates 12 are attracted anisotropically, so that the L-shaped rod 8 moves together with the moving plates 12, thereby causing the corresponding pressing plates 23 in the coupler body 1 to move relatively, thereby fixing the portion of the optical fiber located in the coupler body 1, so that when the optical fiber is subsequently straightened, the middle portion of the optical fiber will not move;

[0039] During the relative movement of the two pressing plates 23, the pressing plates 23 will first contact with the corresponding clamping blocks 28. Since the side of the clamping blocks 28 close to the pressing plates 23 is an arc surface, the two clamping blocks 28 move into the moving grooves 26. When the two pressing plates 23 reach the limit position, the clamping blocks 28 are aligned with the limiting grooves 32. Under the elastic action of the second spring 27, the clamping blocks 28 will reset, so that the clamping blocks 28 move into the limiting grooves 32 to fix the pressing plates 23. When the pressing plates 23 are fixed, the auxiliary grooves 29 will also be located in the limiting grooves 32.

[0040] Since the side of the auxiliary block 31 close to the pressure plate 23 is also an arc surface, after the clamping block 28 enters the limiting groove 32, the auxiliary block 31 will be located in the auxiliary groove 29. At this time, the third spring 30 is compressed, and the third spring 30 will apply pressure to the auxiliary block 31, so that the auxiliary block 31 applies pressure to the pressure plate 23, so that the two pressure plates 23 have a greater squeezing force on the optical fiber and clamp the optical fiber more tightly;

[0041] After the optical fiber is fixed, the staff controls the two electromagnets 15 to be energized. After the electromagnets 15 are energized, they generate an attractive force on the slider, causing the slider and the rack 19 to move right, driving the rotating gear 18 and the crossbar 17 to rotate. Since the crossbar 17 and the bevel gear 10 on the threaded rod 5 are meshed with each other, the rotation of the crossbar 17 will drive the corresponding two threaded rods 5 to rotate, so that the multiple vertical boxes drive the strip plates 20 and the limit rods 21 to move away from the coupler body 1, straightening the remaining part of the optical fiber to ensure that all the optical fibers inside the coupler are in a straight state;

[0042] It is worth mentioning that, since the adjacent surfaces of the L-shaped rod 8 and the movable plate 12 are attracted anisotropically and the L-shaped rod 8 is fixedly connected to the pressing plate 23 , when the movable plate 12 moves following the vertical box, the L-shaped rod 8 will be separated from the movable plate 12 .

[0043] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An optical fiber coupler with an optical fiber bundle fixing structure, comprising a coupler body (1), characterized in that: Two insertion tubes (2) are fixedly connected to the left and right sides of the coupler body (1), and two vertical plates (3) are fixedly connected to each other between two matching insertion tubes (2). The vertical plates (3) are respectively located on the upper and lower sides of the corresponding insertion tubes (2). Each insertion tube (2) is provided with a preliminary pressing assembly, and the preliminary pressing assembly comprises vertical boxes arranged on the upper and lower sides of the insertion tube (2). The inner wall of each vertical box away from the insertion tube (2) is fixedly connected to two pneumatic rods (11). The telescopic ends of each two matching pneumatic rods (11) are fixedly connected to a movable plate (12). Two strip plates (20) are slidably connected in each insertion tube (2). The adjacent sides of each two matching strip plates (20) are fixedly connected to a plurality of limiting rods (21). The plurality of limiting rods (21) on each two matching strip plates (20) are staggered. The adjacent sides of each strip plate (20) and the corresponding movable plate (12) are fixedly connected to a connecting rod (13). The distance between two adjacent limiting rods (21) is the same as the width of the limiting rods (21), so that when the two strip plates (20) move relative to each other, the lower limiting rod (21) will be inserted into the gap between the upper limiting rods (21); The upper and lower sides of the coupler body (1) are provided with straightening components, the straightening components comprising two threaded rods (5) rotatably connected to adjacent sides of the two vertical plates (3), each of the threaded rods (5) passing through the corresponding vertical box, the upper and lower sides of the coupler body (1) are fixedly connected to two U-shaped blocks (9), the two threaded rods (5) pass through the corresponding U-shaped blocks (9), the two U-shaped blocks (9) pass through a cross bar (17) rotatably connected together, the cross bar (17) and the two threaded rods (5) are provided with bevel gears (10) meshing with each other, the U-shaped block (9) located at the rear side is provided with a driving component, the plurality of insertion tubes (2) are provided with a first strip opening (4), and the plurality of connecting rods (13) pass through the corresponding first strip opening (4); It also includes a secondary fixing component, the secondary fixing component is arranged on the top and bottom telescopic rods (22) of the coupler body (1), the telescopic ends of each two matched telescopic rods (22) are fixedly connected to a pressing plate (23), a second strip opening (7) is provided on one side of the plurality of vertical boxes close to the U-shaped block (9), the opposite sides of each two matched pressing plates (23) are fixedly connected to an L-shaped rod (8), and each L-shaped rod (8) passes through the corresponding second strip opening (7); The L-shaped rod (8) is magnetic, the moving plate (12) is made of an iron material, and the moving plate (12) and adjacent sides of the L-shaped rod (8) attract each other.

2. The optical fiber coupler with an optical fiber bundle fixing structure according to claim 1, characterized in that: The driving assembly comprises a rectangular box (14) arranged on a U-shaped block (9), an electromagnet (15) is embedded in the right inner wall of the rectangular box (14), a slider is slidably connected inside the rectangular box (14), the slider and the adjacent side of the electromagnet (15) are elastically connected via a first spring (16), a rack (19) is fixedly connected to the left side of the slider, the cross bar (17) passes through the rectangular box (14), and a rotating gear (18) meshing with the rack (19) is provided on the cross bar (17).

3. The optical fiber coupler with an optical fiber bundle fixing structure according to claim 1, characterized in that: A plurality of limit assemblies are provided in the coupler body (1), and the limit assemblies include a plurality of movable grooves (26) arranged on the inner wall of the coupler body (1), two of the movable grooves (26) are slidably connected with a clamping block (28), the plurality of clamping blocks (28) are elastically connected to the inner wall of the corresponding movable groove (26) via a second spring (27), and the front and rear sides of the plurality of pressure plates (23) are provided with limit grooves (32) matching with the clamping blocks (28), and the sides of the plurality of clamping blocks (28) close to the pressure plates (23) are all arc surfaces.

4. The optical fiber coupler with an optical fiber bundle fixing structure according to claim 1, characterized in that: A plurality of transverse plates (24) are fixedly connected inside the coupler body (1), and an alignment cylinder (25) is commonly penetrated and fixedly connected to each two matching transverse plates (24).

5. The optical fiber coupler with an optical fiber bundle fixing structure according to claim 3, characterized in that: The auxiliary assembly also includes an auxiliary component, the auxiliary component including auxiliary grooves (29) arranged on a plurality of clamping blocks (28), each of the auxiliary grooves (29) having an auxiliary block (31) slidably connected therein, each of the auxiliary blocks (31) being elastically connected to the inner wall of the corresponding auxiliary groove (29) via a third spring (30), and each of the auxiliary blocks (31) having a side close to the alignment cylinder (25) being an inclined surface.

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