Non-contact expanded beam optical communication assembly with resilient wear-resistant connection structure

Abstract

This invention discloses a non-contact beam-expanding optical communication component with an elastic, wear-resistant connection structure, relating to the field of optical communication accessories technology. It includes fiber optic coupling ends located at both ends of a cylindrical shell, a beam-expanding lens installed inside the shell, and a dust-collecting mechanism externally mounted on the fiber optic coupling ends. This non-contact beam-expanding optical communication component with an elastic, wear-resistant connection structure, through the use of structures such as ring covers and ring boxes, completes a two-step dust removal process during the assembly of the fiber optic coupling ends. First, a directional circulating airflow is formed, and the ring box's negative pressure suction removes suspended impurities inside the cylindrical shell. Then, the ring cover opening is sealed to form a closed cavity, and continuous suction brings the inside of the cylindrical shell close to a vacuum, removing stubborn impurities and eliminating interference from air scattering and airflow disturbances on beam transmission, reducing optical transmission loss, improving the transmission stability and coupling efficiency of the expanded parallel beam, and offering convenient operation, thus improving the efficiency of the non-contact beam-expanding optical communication component.

Description

Technical Field

[0001] This invention relates to the field of optical communication accessories technology, and in particular to a non-contact beam-expanding optical communication component with an elastic, wear-resistant connection structure. Background Technology

[0002] Non-contact fiber optic connectors are high-precision devices that enable optical signal transmission without physical contact, replacing traditional ferrule mating with air gap or optical lens coupling technology.

[0003] In dusty environments such as mines, building material processing, grain transportation, and construction sites, if dust enters the interior of the housing during the assembly and disassembly of the fiber optic coupling end, it will adhere to the surface of the beam expander lens and the inner wall of the optical path channel, blocking the beam propagation path, increasing optical transmission loss, causing optical power attenuation and signal distortion, and in severe cases, completely blocking the optical path and causing communication interruption.

[0004] Currently, the industry mostly uses external devices such as vacuum cleaners for dust removal. However, this method is inconvenient to deploy on-site and has a complicated operation process. Especially in the case of repeated maintenance, a dust removal process must be performed after each disassembly and assembly, which increases the workload and operation time of on-site maintenance and reduces the efficiency of use.

[0005] Therefore, it is necessary to propose a non-contact beam-expanding optical communication component with an elastic wear-resistant connection structure to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a non-contact beam-expanding optical communication component with an elastic and wear-resistant connection structure, in order to solve the problem that the industry often uses external devices such as vacuum cleaners for dust cleaning, but this method is inconvenient to deploy on site and has a complicated operation process. Especially under the condition of repeated maintenance, a dust removal process must be performed after each disassembly and assembly, which increases the workload and operation time of on-site maintenance and reduces the efficiency of use.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a non-contact beam-expanding optical communication component with an elastic wear-resistant connection structure, comprising optical fiber coupling ends disposed at both ends of a cylindrical shell, a beam-expanding lens installed inside the cylindrical shell, and a dust-collecting mechanism disposed on the exterior of both optical fiber coupling ends. The dust-collecting mechanism comprises a ring cover and a ring box. The ring cover is fixed on the optical fiber coupling ends. The end of the ring cover near the beam-expanding lens has a filter hole, and the other end of the ring cover is designed to be open. A pressure sleeve slides on the optical fiber coupling ends. The ring box is fixed to the outside of the cylindrical shell, and the ring box and the cylindrical shell are in unidirectional communication in the direction of the ring box. A ring plate slides inside the ring box, and a moving rod slides at one end of the ring box near the beam expander lens. The ring plate and the moving rod are fixed. A second elastic telescopic rod is connected to the pressure sleeve. The second elastic telescopic rod is parallel to the cylindrical shell and the moving rod. During installation, the synchronous control rod and the second elastic telescopic rod in the retracted state move towards the beam expander lens. The second elastic telescopic rod drives the pressure sleeve to approach the ring cover. At the same time, the ring plate slides in the ring box and draws in the cylinder shell. External gas passes through the ring cover and enters the cylinder shell to form a circulating airflow. When the pressure sleeve fits into the opening end of the ring cover, the second elastic telescopic rod is stretched, and the moving rod drives the ring plate to continue sliding. The inside of the suction cylinder shell gradually approaches a vacuum, and the second elastic telescopic rod and the moving rod are locked on the cylinder shell.

[0008] Preferably, a rubber ring is axially fixedly installed on the outer wall of the optical fiber coupling end, and the pressure sleeve abuts against the rubber ring. The distance between the rubber ring and the ring cover is consistent with the axial length of the pressure sleeve.

[0009] Preferably, a suction channel is provided at the inner ring of the ring box, the suction channel is away from the beam expander lens, the suction channel extends to the inner wall of the shell, the ring box is connected to the shell through the suction channel, and a first one-way valve is fixedly installed inside the suction channel.

[0010] Preferably, a filter screen is fixedly installed inside the ring box. The filter screen is ring-shaped and close to the end box. A collection area is formed between the filter screen and the inner wall of the ring box, and the suction channel is connected to the collection area. Both ends of the cylindrical shell are fixedly installed with end boxes, which are ring-shaped. The pressure sleeve abuts against the end box, and an air hole is opened at the end of the end box away from the cylindrical shell. An air pipe is connected to the ring box, and the connection between the air pipe and the ring box is offset from the collection area. The end of the air pipe away from the ring box is connected to the end box, and a second one-way valve is fixedly installed on the air pipe.

[0011] Preferably, the end of the end box away from the cylindrical shell is provided with an inclined surface, which is inclined from the outer ring of the end box towards the direction of the beam expander lens, and both the ring cover and the pressure sleeve are provided with inclined surfaces adapted to the inclined surface of the end box.

[0012] Preferably, a tie rod is fixedly installed on the pressure sleeve. The tie rod is U-shaped. A second elastic telescopic rod is fixed on one end of the tie rod near the ring box. A crossbar is fixedly connected to the end of the second elastic telescopic rod away from the tie rod. A bolt is movably inserted through the end of the crossbar away from the second elastic telescopic rod. A through hole for the bolt to pass through is opened on the crossbar. A threaded hole for the bolt to mate with is opened on the outer wall of the cylinder shell.

[0013] Preferably, a first elastic telescopic rod is fixedly installed on the pull frame. The first elastic telescopic rod is distributed radially along the shell, and the outer wall of the shell is provided with a hole for the telescopic end of the first elastic telescopic rod to be inserted.

[0014] Preferably, a connecting line is connected to the optical fiber coupling end, and the connecting line is connected to an external optical fiber line.

[0015] Preferably, a spring is fitted onto the moving rod, with one end of the spring fixedly connected to the ring plate and the other end of the spring fixedly connected to the inner wall of the ring box.

[0016] Preferably, both ends of the inner wall of the cylinder are fixedly connected with convex rings. When the optical fiber coupling end, together with the ring cover, is inserted into the end of the cylinder, the ring cover abuts against the convex ring.

[0017] The technical effects and advantages of this invention are as follows: This invention utilizes structures such as ring covers and ring boxes to perform a two-step dust removal process during the assembly of the optical fiber coupling end. First, a directional circulating airflow is formed, which, combined with the negative pressure suction of the ring box, removes suspended impurities inside the cylinder shell. Then, the opening of the ring cover is sealed to form a closed cavity, and continuous suction brings the inside of the cylinder shell close to a vacuum, removing stubborn impurities and eliminating the interference of air scattering and airflow disturbance on beam transmission. This reduces optical transmission loss, improves the transmission stability and coupling efficiency of the parallel beam after beam expansion, and is easy to operate, thus improving the efficiency of non-contact beam-expanding optical communication components. This invention uses a gas-pressurized backflush structure with end boxes, air holes, and other components to effectively disperse and peel off stubborn impurities that have accumulated and solidified on the inner wall of the ring cover over a long period of time. This solves the problem that traditional manual cleaning is difficult to remove solidified dust and is not thorough, reduces the cleaning difficulty of the ring cover, and achieves non-destructive cleaning without knocking or shaking, thus avoiding damage to the internal optical structure of the fiber optic coupling end caused by vibration and impact. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the non-contact beam expander optical communication component with an elastic wear-resistant connection structure according to the present invention.

[0019] Figure 2 This is a cross-sectional view of the non-contact beam expander optical communication component with an elastic wear-resistant connection structure according to the present invention.

[0020] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0021] Figure 4 This is a schematic diagram of the ring box and filter screen structure of the present invention.

[0022] Figure 5 This is a schematic diagram of the end box and vent structure of the present invention.

[0023] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point B.

[0024] Figure 7 This is a schematic diagram of the rubber ring and pressure sleeve structure of the present invention.

[0025] Figure 8This is a schematic diagram of the cylindrical shell and bolt structure of the present invention.

[0026] Figure 9 This is a schematic diagram of the bolt and threaded hole structure of the present invention.

[0027] Figure 10 This is a schematic diagram of the fiber optic coupling end and the ring structure of the present invention.

[0028] Figure 11 This is a schematic diagram of the pressure sleeve and tie rod structure of the present invention.

[0029] In the diagram: 1. Shell; 101. Convex ring; 2. Beam expander lens; 3. Fiber optic coupling end; 301. Rubber ring; 4. Connecting wire; 5. End box; 501. Air hole; 6. Ring cover; 601. Filter hole; 7. Pressure sleeve; 8. Ring box; 9. Ring plate; 10. Bolt; 11. Moving rod; 12. Threaded hole; 13. Spring; 14. Filter screen; 15. Collection area; 16. Suction channel; 17. First one-way valve; 18. Air pipe; 19. Second one-way valve; 20. Pull frame; 21. First elastic telescopic rod; 22. Insertion hole; 23. Second elastic telescopic rod; 24. Crossbar. Detailed Implementation

[0030] This invention provides, for example Figures 1 to 11 The non-contact beam-expanding optical communication component with an elastic wear-resistant connection structure is shown. It includes optical fiber coupling ends 3 movably disposed at both ends of a cylindrical shell 1. Connecting lines 4 are connected to the optical fiber coupling ends 3, and the connecting lines 4 are connected to external optical fiber lines to realize the access and output of optical signals. A beam-expanding lens 2 is fixedly installed inside the cylindrical shell 1. During operation, the external optical signal is transmitted to one side of the optical fiber coupling end 3 through the optical fiber inside the connecting line 4. The beam with a set divergence angle is emitted outward through its built-in micro collimating lens. The beam enters the beam-expanding lens 2 in the middle of the cylindrical shell 1, where it completes the spot magnification and beam collimation, shaping it into an approximately parallel Gaussian beam with a low divergence angle. The shaped beam continues to propagate and finally enters the other side of the optical fiber coupling end 3, where its built-in micro collimating lens converges the beam and couples it into the optical fiber of the corresponding connecting line 4. The access and output of the optical communication component are common existing technologies and will not be described in detail here.

[0031] Considering that this component relies on optical signal transmission to achieve communication, in dusty application scenarios such as mines, building material processing, grain transportation, and construction sites, if dust enters the interior of the shell 1 during the assembly and disassembly of the optical fiber coupling end 3 and the shell 1, it will adhere to the mirror surface of the beam expander lens 2 and the inner wall of the optical path channel, blocking the beam propagation path, increasing optical transmission loss, causing optical power attenuation and signal distortion, and in severe cases, completely blocking the optical path and causing communication interruption. Currently, the industry mostly uses external devices such as vacuum cleaners for dust cleaning, but this method is inconvenient to deploy on-site and has a cumbersome operation process, especially under repeated maintenance conditions, where a dust removal process must be performed after each disassembly and assembly, increasing the workload and operation time of on-site maintenance and reducing the efficiency of use.

[0032] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown in the diagram, the present invention provides a dust collection mechanism on the outside of the optical fiber coupling end 3. The dust collection mechanism includes a ring cover 6 and a ring box 8. The ring cover 6 is fixedly connected to the outer wall of the optical fiber coupling end 3. The end of the ring cover 6 away from the beam expanding lens 2 is open. The end of the ring cover 6 near the beam expanding lens 2 is provided with a plurality of filter holes 601. The inner diameter of the filter holes 601 is small and can intercept impurities. A pressure sleeve 7 is provided on the side of the ring cover 6 facing away from the optical fiber coupling end 3. The outer diameter of the pressure sleeve 7 is the same as the outer diameter of the cylindrical shell 1. The pressure sleeve 7 is slidably disposed on the optical fiber coupling end 3. A rubber ring 301 is fixedly installed on the outer wall of the optical fiber coupling end 3. The pressure sleeve 7 and the rubber ring 301 abut against each other. The distance between the rubber ring 301 and the ring cover 6 is the same as the axial length of the pressure sleeve 7.

[0033] The ring box 8 is fixedly installed on the outside of the shell 1. A suction channel 16 is provided on the inner ring of the ring box 8. The suction channel 16 is away from the beam expander lens 2 and extends to the inner wall of the shell 1. The ring box 8 is connected to the shell 1 through the suction channel 16. A first one-way valve 17 is fixedly installed inside the suction channel 16 to realize one-way flow from the shell 1 to the ring box 8. A ring plate 9 is slidably arranged inside the ring box 8. A wear-resistant pad is provided between the ring plate 9 and the inner wall of the ring box 8 to reduce wear and ensure sealing. A shift rod 11 is slidably passed through the end of the ring box 8 near the beam expander lens 2. The ring plate 9 is fixed on the shift rod 11. When the shift rod 11 drives the ring plate 9 to slide inside the ring box 8 towards the beam expander lens 2, a negative pressure is formed in the inner cavity of the ring box 8, and then the suction channel 16 sucks and removes dust from the inside of the shell 1.

[0034] A tie rod 20 is fixedly installed on the pressure sleeve 7. The tie rod 20 is U-shaped. A second elastic telescopic rod 23 is fixedly connected to one end of the tie rod 20 near the ring box 8. The second elastic telescopic rod 23 is distributed parallel to the cylinder shell 1. A crossbar 24 is fixedly connected to the end of the second elastic telescopic rod 23 away from the tie rod 20. When not subjected to external force, the second elastic telescopic rod 23 is in a shortened state and has a large elastic support force. A bolt 10 is movably inserted through the end of the crossbar 24 away from the second elastic telescopic rod 23. A through hole is opened on the moving rod 11 for the bolt 10 to pass through. In actual use, the bolt 10 drives the moving rod 11 and the crossbar 24 to move synchronously. After the bolt 10 is pulled out, the moving rod 11 and the crossbar 24 can move independently. A threaded hole 12 that mates with the bolt 10 is opened on the outer wall of the cylinder shell 1.

[0035] A first elastic telescopic rod 21 is fixedly installed on the pull frame 20. The first elastic telescopic rod 21 is distributed radially along the shell 1, and the outer wall of the shell 1 is provided with a hole 22 for the telescopic end of the first elastic telescopic rod 21 to be inserted. When not subjected to external force, the first elastic telescopic rod 21 is in the extended state.

[0036] The actual working conditions are as follows (by...) Figures 7 to 9 ): Phase 1 (refer to) Figure 7 The fiber coupling end 3, together with the ring cover 6, is inserted into the end of the cylindrical shell 1. During this process, the ring cover 6 directly contacts the cylindrical shell 1, thereby avoiding wear between the fiber coupling end 3 and the cylindrical shell 1. At the same time, the pressure sleeve 7 abuts against the side of the rubber ring 301 facing away from the beam expanding lens 2, and the telescopic end of the first elastic telescopic rod 21 abuts against the outer wall of the cylindrical shell 1.

[0037] Phase Two (refer to) Figures 7 to 8 The operator controls the bolt 10 to move toward the beam expander lens 2, causing the moving rod 11 and the crossbar 24 to move synchronously.

[0038] The moving rod 11 drives the ring plate 9 to slide towards the beam expander lens 2 inside the ring box 8, and the suction channel 16 draws suction from the inside of the cylinder shell 1. At the same time, the puller 20 drives the pressure sleeve 7 to slide towards the beam expander lens 2 on the fiber coupling end 3. The pressure sleeve 7 squeezes the rubber ring 301 to deform. During this process, the external gas enters the inside of the cylinder shell 1 through the opening end of the ring cover 6 and the filter hole 601, forming a directional circulating airflow. This airflow carries away the impurities in the dead corners of the cylinder shell 1, while debris and other impurities are intercepted by the filter hole 601 and collected inside the ring cover 6.

[0039] Subsequently, the pressure sleeve 7 moves to the side of the rubber ring 301 near the beam expander lens 2 and fits against the opening end of the ring cover 6, sealing the opening end of the ring cover 6. The telescopic end of the first elastic telescopic rod 21 is inserted into the interior of the insertion hole 22, initially realizing the pre-positioning of the fiber coupling end 3 to prevent loosening and displacement. During the movement of the pressure sleeve 7, the rubber ring 301 is squeezed and undergoes elastic deformation.

[0040] Phase Three (refer to) Figures 8 to 9 Bolt 10 continues to move toward the beam expander lens 2, and ring plate 9 continues to slide toward the beam expander lens 2 inside the ring box 8. The second elastic telescopic rod 23 is stretched. During the suction process, since the opening end of the ring cover 6 has been blocked, the internal space of the cylinder shell 1 forms a sealed cavity. After continuous suction, the inside of the cylinder shell 1 gradually approaches a vacuum, further peeling off and removing stubborn impurities attached to the mirror surface of the beam expander lens 2 and the inner wall of the cylinder shell 1, thus improving the thoroughness of dust removal.

[0041] Furthermore, the near-vacuum state inside the shell 1 eliminates the interference of air scattering and airflow disturbance on beam transmission, reduces light transmission loss, improves the transmission stability and coupling efficiency of the parallel beam after beam expansion, and can also isolate water vapor and corrosive gases, protect the optical film layer of the beam expander lens 2 from erosion, and extend the service life of the component.

[0042] Furthermore, the pressure sleeve 7 seals the opening end of the ring cover 6, which can form a closed storage space for the impurities trapped inside the ring cover 6, preventing the impurities from being shaken and disturbed by airflow and flying back into the cylinder shell 1 to cause secondary pollution. At the same time, relying on this automatic sealing structure, there is no need to carry out dust removal and cleaning operations immediately after each installation, reducing the frequency of operation and maintenance, and adapting to the usage scenario of repeated disassembly and frequent maintenance of equipment.

[0043] Tighten bolt 10 to screw it into threaded hole 12, thus locking moving rod 11 and crossbar 24. Simultaneously, the installation connection and locking of fiber optic coupling end 3 and cylinder shell 1 are achieved. Dust removal, sealing and component locking are completed in one step, simplifying the operation process.

[0044] It should be noted that structures such as the shift rod 11, tie rod 20, and crossbar 24 are all made of high-strength metal materials, such as stainless steel, to ensure strength during use.

[0045] In summary, this invention, through the arrangement of structures such as the ring cover 6 and the ring box 8, completes a two-step dust removal operation during the assembly of the optical fiber coupling end 3. First, a directional circulating airflow is formed, which, together with the negative pressure suction of the ring box 8, removes suspended impurities inside the shell 1. Then, the opening of the ring cover 6 is sealed to form a closed cavity, and continuous suction makes the inside of the shell 1 approach a vacuum, removing stubborn impurities and eliminating the interference of air scattering and airflow disturbance on beam transmission, reducing optical transmission loss, improving the transmission stability and coupling efficiency of the parallel beam after beam expansion, and providing convenient operation, thereby improving the utilization efficiency of non-contact beam-expanding optical communication components.

[0046] Meanwhile, through the cooperation of elastic structures such as the first elastic telescopic rod 21 and the second elastic telescopic rod 23, the dust removal, sealing and component locking actions are completed in an integrated manner. Furthermore, the impurities are collected and sealed by the opening of the sealing ring cover 6 of the pressure sleeve 7, simplifying the operation and maintenance process.

[0047] Reference Figure 7 As shown, a spring 13 is fitted on the moving rod 11. One end of the spring 13 is fixedly connected to the ring plate 9, and the other end of the spring 13 is fixedly connected to the inner wall of the ring box 8. The spring 13 is provided to assist the moving rod 11 and other structures in resetting.

[0048] Reference Figure 3 and Figure 6 As shown, both ends of the inner wall of the cylindrical shell 1 are fixedly connected with a convex ring 101. When the optical fiber coupling end 3 and the ring cover 6 are inserted into the end of the cylindrical shell 1, the ring cover 6 abuts against the convex ring 101, and the convex ring 101 limits the ring cover 6 and the optical fiber coupling end 3.

[0049] Reference Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, considering that impurities accumulate over a long period of time and are easily adhered to and solidified on the inner wall of the ring cover 6 under the influence of negative pressure, in order to achieve efficient cleaning after the ring cover 6 is disassembled, end boxes 5 are fixedly installed at both ends of the cylinder shell 1. The end boxes 5 are ring-shaped, and the end of the end box 5 away from the cylinder shell 1 is set as an inclined surface. The inclined surface is inclined from the outer ring of the end box 5 towards the beam expander lens 2, and several air holes 501 are opened on the inclined surface. At the same time, the end of the ring cover 6 near the beam expander lens 2 is also set as an inclined surface, and the inclination direction is consistent with that of the end box 5. The filter hole 601 is set on this inclined surface. In addition, the pressure sleeve 7 is provided with an inclined surface that matches the inclined surface of the end box 5. When the pressure sleeve 7 seals the opening end of the ring cover 6, the inclined surface of the pressure sleeve 7 fits against the inclined surface of the end box 5, closing the air holes 501. The fit is provided with a wear-resistant rubber pad and other structures (not shown in the figure) to ensure sealing.

[0050] A filter screen 14 is fixedly installed inside the ring box 8. The filter screen 14 is ring-shaped and close to the end box 5. A collection area 15 is formed between the filter screen 14 and the inner wall of the ring box 8. The suction channel 16 is connected to the collection area 15. An air pipe 18 is connected to the ring box 8. The connection between the air pipe 18 and the ring box 8 is offset from the collection area 15. The end of the air pipe 18 away from the ring box 8 is connected to the end box 5. A second one-way valve 19 is fixedly installed on the air pipe 18 to realize one-way flow from the ring box 8 to the end box 5. When the ring plate 9 slides inside the ring box 8 toward the beam expander lens 2, the impurities in the shell 1 are drawn into the collection area 15 through the suction channel 16 and intercepted and collected by the filter screen 14. When the ring plate 9 slides inside the ring box 8 away from the beam expander lens 2, it squeezes the gas filtered by the filter screen 14 into the end box 5 through the air pipe 18.

[0051] When disassembling the fiber coupling end 3, the pressure sleeve 7 is still located on the side of the rubber ring 301 near the beam expander lens 2 and is attached to the open end of the ring cover 6, which remains closed. First, loosen the bolt 10 so that it can be pulled out from the threaded hole 12. The second elastic telescopic rod 23 returns to its original position and retracts. The moving rod 11 drives the ring plate 9 to slide away from the beam expander lens 2 inside the ring box 8. During this stage, the telescopic end of the first elastic telescopic rod 21 is still inserted into the insertion hole 22. The pressure sleeve 7 continues to seal the air hole 501 and the open end of the ring cover 6. The sliding of the ring plate 9 will compress the gas inside the ring box 8, completing the gas pressurization.

[0052] Next, the operator controls the retraction end of the first elastic telescopic rod 21 to retract it from the inside of the insertion hole 22, and moves the structure such as the pull bracket 20 away from the beam expander lens 2. The pressure sleeve 7 separates from the end box 5, the air hole 501 is unblocked, and during the movement, the filter hole 601 can align with the air hole 501. However, due to the limitation of the rubber ring 301, the pressure sleeve 7 still closes the opening end of the ring cover 6. At the same time, the ring plate 9 continues to slide away from the beam expander lens 2 inside the ring box 8, and the previously pressurized gas passes through the air pipe 1. 8. The end box 5 is ejected at high speed from the air hole 501. The airflow passes through the filter hole 601 and blows back into the inside of the ring cover 6. With the help of the high pressure back-blowing action, the impurities that were originally accumulated and solidified on the inner wall of the ring cover 6 are shaken and peeled off. The high pressure airflow formed by the previous pressure accumulation ensures the back-blowing force and duration, breaking the solidified state of the impurities. At the same time, the pressure sleeve 7 always seals the opening end of the ring cover 6, which can prevent loose impurities from splashing outward and falling into the external environment during the blowing process, and prevent impurities from flowing back into the inside of the cylinder shell 1 and causing secondary pollution.

[0053] Finally, the fiber optic coupling end 3 and the ring cover 6 are removed from the pressure sleeve 7. At this time, the solidified impurities inside the ring cover 6 have been loosened and fallen off, and the operator can easily complete the cleaning operation, reducing the difficulty of cleaning. There is no need to hold the fiber optic coupling end 3 and shake or knock the ring cover 6 repeatedly to remove the accumulated dust, making the operation simpler and avoiding damage to the internal optical structure from vibration and impact.

[0054] The end box 5 and other structures are equipped with inclined surfaces to ensure that the airflow is directed toward the ring cover 6, thereby improving the purging efficiency.

[0055] In summary, this invention, by setting up end box 5, air hole 501 and other structures to form a gas pressure backflush structure, can effectively shake and peel off stubborn impurities that have accumulated and solidified on the inner wall of the ring cover 6 over a long period of time. This solves the problem that traditional manual cleaning is difficult to remove solidified dust and is not thorough, reduces the cleaning difficulty of the ring cover 6, and achieves non-destructive cleaning operation without knocking or shaking, avoiding vibration and impact damage to the internal optical structure of the fiber optic coupling end 3.

[0056] This invention achieves a reusable continuous working mode of internal suction dust removal and high-pressure jet cleaning by setting up structures such as ring box 8, filter screen 14, and collection area 15. It has functions such as filtration, collection and self-cleaning. At the same time, the pressure sleeve 7 is used to seal the opening end of the ring cover 6 to prevent loose impurities from splashing outward.

[0057] It should be noted that the ring box 8 is assembled from two separate parts, which makes it convenient for operators to regularly empty and clean the impurities trapped in the collection area 15, making maintenance and operation convenient and efficient.

Claims

1. A non-contact beam-expanding optical communication component with an elastic wear-resistant connection structure, comprising optical fiber coupling ends (3) disposed at both ends of a cylindrical shell (1), and a beam-expanding lens (2) installed inside the cylindrical shell (1), characterized in that: A dust collection mechanism is provided on the outside of both optical fiber coupling ends (3). The dust collection mechanism includes a ring cover (6) and a ring box (8). The ring cover (6) is fixed on the optical fiber coupling end (3). The end of the ring cover (6) near the beam expander lens (2) has a filter hole (601). The other end of the ring cover (6) is open. A pressure sleeve (7) slides on the optical fiber coupling end (3). The ring box (8) is fixed to the outside of the cylindrical shell (1). The ring box (8) and the cylindrical shell (1) are unidirectionally connected in the direction of the ring box (8). A ring plate (9) slides inside the ring box (8). A moving rod (11) slides at one end of the ring box (8) near the beam expander (2). The ring plate (9) and the moving rod (11) are fixed. A second elastic telescopic rod (23) is connected to the pressure sleeve (7). The second elastic telescopic rod (23) is parallel to the cylindrical shell (1) and the moving rod (11). During installation, the synchronous control rod (11) and the second elastic telescopic rod (23) in the retracted state move toward the beam expander (2). The second elastic telescopic rod (23) drives the pressure sleeve (7) to approach the ring cover (6). At the same time, the ring plate (9) slides in the ring box (8) and draws in the cylinder shell (1). External gas passes through the ring cover (6) and enters the cylinder shell (1) to form a circulating airflow. When the pressure sleeve (7) is in contact with the opening end of the ring cover (6), the second elastic telescopic rod (23) is stretched, and the moving rod (11) drives the ring plate (9) to continue sliding. The inside of the suction cylinder shell (1) gradually approaches a vacuum, and the second elastic telescopic rod (23) and the moving rod (11) are locked on the cylinder shell (1).

2. The non-contact beam-expanding optical communication component with an elastic wear-resistant connection structure according to claim 1, characterized in that: A rubber ring (301) is axially fixed on the outer wall of the optical fiber coupling end (3). The pressure sleeve (7) abuts against the rubber ring (301). The distance between the rubber ring (301) and the ring cover (6) is consistent with the axial length of the pressure sleeve (7).

3. The non-contact beam expander optical communication component with an elastic wear-resistant connection structure according to claim 1, characterized in that: The inner ring of the ring box (8) is provided with a suction channel (16), which is far away from the beam expander lens (2) and extends to the inner wall of the shell (1). The ring box (8) is connected to the shell (1) through the suction channel (16). A first one-way valve (17) is fixedly installed inside the suction channel (16).

4. A non-contact beam-expanding optical communication component with an elastic wear-resistant connection structure according to claim 3, characterized in that: A filter screen (14) is fixedly installed inside the ring box (8). The filter screen (14) is ring-shaped and close to the end box (5). A collection area (15) is formed between the filter screen (14) and the inner wall of the ring box (8). The suction channel (16) is connected to the collection area (15). Both ends of the cylindrical shell (1) are fixedly installed with end boxes (5). The end boxes (5) are ring-shaped. The pressure sleeve (7) abuts against the end box (5). An air hole (501) is opened at the end of the end box (5) away from the cylindrical shell (1). The ring box (8) is connected to an air pipe (18), and the connection between the air pipe (18) and the ring box (8) is offset from the collection area (15). The end of the air pipe (18) away from the ring box (8) is connected to the end box (5), and a second one-way valve (19) is fixedly installed on the air pipe (18).

5. A non-contact beam-expanding optical communication component with an elastic wear-resistant connection structure according to claim 4, characterized in that: The end of the end box (5) away from the cylindrical shell (1) is provided with an inclined surface. The inclined surface is inclined from the outer ring of the end box (5) towards the inner ring towards the beam expander lens (2). The ring cover (6) and the pressure sleeve (7) are both provided with inclined surfaces that are adapted to the inclined surface of the end box (5).

6. A non-contact beam-expanding optical communication component with an elastic wear-resistant connection structure according to claim 1, characterized in that: A puller (20) is fixedly installed on the pressure sleeve (7). The puller (20) is U-shaped. The second elastic telescopic rod (23) is fixed on the end of the puller (20) near the ring box (8). A crossbar (24) is fixedly connected to the end of the second elastic telescopic rod (23) away from the puller (20). A bolt (10) is movably passed through the end of the crossbar (24) away from the second elastic telescopic rod (23). A through hole for the bolt (10) is opened on the moving rod (11). A threaded hole (12) that mates with the bolt (10) is opened on the outer wall of the cylinder shell (1).

7. A non-contact beam-expanding optical communication component with an elastic wear-resistant connection structure according to claim 6, characterized in that: The first elastic telescopic rod (21) is fixedly installed on the pull frame (20). The first elastic telescopic rod (21) is distributed radially along the shell (1), and the outer wall of the shell (1) is provided with a socket (22) for the telescopic end of the first elastic telescopic rod (21) to be inserted.

8. A non-contact beam-expanding optical communication component with an elastic wear-resistant connection structure according to claim 1, characterized in that: The fiber coupling end (3) is connected to a connecting line (4), which is connected to an external fiber optic line.

9. A non-contact beam-expanding optical communication component with an elastic wear-resistant connection structure according to claim 1, characterized in that: A spring (13) is fitted on the moving rod (11). One end of the spring (13) is fixedly connected to the ring plate (9), and the other end of the spring (13) is fixedly connected to the inner wall of the ring box (8).

10. A non-contact beam-expanding optical communication component with an elastic wear-resistant connection structure according to claim 1, characterized in that: Both ends of the inner wall of the cylindrical shell (1) are fixedly connected with convex rings (101). When the fiber coupling end (3) and the ring cover (6) are inserted into the end of the cylindrical shell (1), the ring cover (6) abuts against the convex ring (101).

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