High stability fiber optic connection device and method of use

Abstract

The application discloses a high-stability optical fiber connecting device and a use method, relates to the technical field of optical fiber communication accessories, and comprises a connector, plug-in assemblies are arranged on the two sides of the connector, locking heads are screw-mounted on the side edges of the plug-in assemblies, to-be-connected optical fibers are connected to the two sides of the connector, the plug-in assemblies and the locking heads are movably sleeved on the outer surfaces of the to-be-connected optical fibers, protective sleeves are fixedly connected to the outer surfaces of the connector, and sealing sleeves are screw-mounted on the two sides of the protective sleeves. The high-stability optical fiber connecting device and the use method can extrude and fix the fiber cores of the to-be-connected optical fibers through spring sheets, move the two sides of the auxiliary balls, fix the two sides of the fiber cores of the to-be-connected optical fibers, keep the stability of the connection of the two to-be-connected optical fibers, inflate the sealing air bags, seal the outer surfaces of the to-be-connected optical fibers, keep the connection of the to-be-connected optical fibers clean, adapt to multiple scenes, be flexible and convenient to disassemble and assemble, and be convenient to maintain and replace.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical fiber communication accessories, in particular to a high-stability optical fiber connecting device and a use method thereof. BACKGROUND

[0002] Optical fiber is a light transmission tool. In order to enable optical fiber to be connected to various electronic devices and enable the information transmitted by the optical fiber to be used by the electronic devices, a connector must be used as an intermediary between the optical fiber and the electronic devices. Optical fiber connection is a technology for connecting optical fibers or connecting optical fibers and other equipment, which is mainly used in optical communication systems. There are two main ways of optical fiber connection: optical fiber fusion and optical fiber connector connection. Optical fiber fusion is a method for connecting two optical fibers together by high-temperature melting. This method can achieve the lowest signal loss and reflection and is the preferred method for long-distance optical fiber communication. Optical fiber connector connection is a method for connecting optical fibers together by optical fiber connectors. This method is convenient to maintain and replace and is suitable for short-distance connection.

[0003] However, the above two optical fiber connection methods have the following problems. Although optical fiber fusion has high reliability and low insertion loss, the fusion equipment is expensive and the fusion operation is difficult. Although the pipeline connector connection is convenient and flexible, it has poor stability and is relatively open, which is easily affected by external interference such as dust and moisture. In order to solve the problems of the prior art, a high-stability optical fiber connecting device and a use method thereof are provided. SUMMARY

[0004] The main purpose of the present application is to provide a high-stability optical fiber connecting device and a use method thereof, which can effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0006] A high-stability optical fiber connecting device, comprising a connector, plug-in assemblies are installed on both sides of the connector, lock heads are screw-mounted on the side edges of the plug-in assemblies, the optical fibers to be connected are connected to both sides of the connector, the plug-in assemblies and the lock heads are movably sleeved on the outer surfaces of the optical fibers to be connected, protective sleeves are fixedly connected to the outer surfaces of the connector, sealing sleeves are screw-mounted on both sides of the protective sleeves, and the sealing sleeves movably sleeve the outer surfaces of the plug-in assemblies and the lock heads.

[0007] The connector comprises a fixing frame, both sides of the fixing frame are fixedly installed with support sleeves, both sides of the support sleeves are provided with clamping grooves, both sides of the support sleeves are provided with moving grooves, the sliding blocks are slidably installed in the moving grooves, the sliding blocks are provided with insertion grooves, both sides of the fixing frame are provided with sliding grooves, the spring sheets are movably sleeved in the sliding grooves, the spring sheets are fixedly connected with the sliding blocks, the reset springs are fixedly installed on both sides of the sliding grooves, the auxiliary balls are slidably installed in the sliding grooves, the sliding grooves of the fixing frame are provided with through grooves on the opposite sides, the auxiliary balls are slidably installed in the through grooves, and the spring sheets are movably installed in the sleeve grooves.

[0008] Preferably, the spring sheet is an elastic metal, both sides of the fixing frame are fixedly installed with support blocks, the support blocks are provided with cavities, the fiber core of the fiber to be connected is inserted and installed in the fixing frame between the two sliding grooves, and the spring sheet and the auxiliary ball are movably installed on the side of the fiber core to be connected.

[0009] Preferably, the insertion assembly comprises a connecting head, one side of the connecting head is fixedly installed with a locking block, the outer surface of one side of the locking block close to the connecting head is provided with a first thread, the side of the locking block away from the connecting head is made of an elastic material, both ends of the side of the connecting head away from the locking block are fixedly installed with insertion blocks, one end of the outer side of the insertion block is fixedly installed with a clamping block, and both ends of the side of the connecting head close to the insertion block are fixedly installed with top rods.

[0010] Preferably, the insertion block is movably sleeved in the inside of the support sleeve, the clamping block is clamped and installed in the inside of the clamping groove, the top rod is movably sleeved in the inside of the moving groove and is inserted and installed in the inside of the insertion groove on the side of the sliding block, the connecting head is inserted and installed on the outer surface of one side of the support sleeve, and the connecting head and the locking block are movably sleeved on the outer surface of the fiber to be connected.

[0011] Preferably, the locking head comprises a pressing sleeve, the outer surface of one end of the pressing sleeve is fixedly sleeved with a rotating nut, the inner wall of the pressing sleeve close to the rotating nut is provided with a second thread, and the side of the pressing sleeve away from the second thread is provided with a tapered groove.

[0012] Preferably, the second thread is threadedly installed on the outer surface of the first thread, the pressing sleeve is movably sleeved on one side of the locking block, and the shape of the tapered groove corresponds to the shape of the locking block.

[0013] Preferably, the protective sleeve comprises a fixing sleeve, the fixing sleeve is sleeved on the outer surface of the fixing frame, rotating heads are rotatably installed on the two sides of the fixing sleeve, screw grooves are formed in the inner walls of the rotating heads, top rings are fixedly installed on the two sides of the fixing sleeve, and the top rings are located inside the rotating heads.

[0014] Preferably, the sealing sleeve comprises an auxiliary head, a conical sleeve is fixedly installed on one side of the auxiliary head, a threaded pipe is fixedly installed inside the auxiliary head, a sleeving groove is formed in the side edge of the threaded pipe, a movable air bag is movably sleeved inside the sleeving groove, a supporting spring is arranged inside the movable air bag, a pressing spring is movably sleeved inside the auxiliary head, and one end of the pressing spring is movably sleeved on the outer surface of the locking head.

[0015] Preferably, a gas flow groove is formed in the side, close to the auxiliary head, of the conical sleeve, a plurality of air grooves are formed in the side, close to the conical sleeve, of the movable air bag, the movable air bag is in communication with the gas flow groove through the air grooves, a sealing air bag is arranged on one side of the inner wall of the conical sleeve, the sealing air bag is in communication with the gas flow groove on one side, the rotating head is screw-installed on the outer surface of the threaded pipe, and the top ring is insertedly installed inside the sleeving groove.

[0016] A connecting method of a high-stability optical fiber connecting device, comprising the following steps:

[0017] S1: The outer sheath of the optical fiber is peeled off to expose the fiber core and cladding of the optical fiber, the optical fiber is cut, and the optical fiber is cut into a flat end face by using an optical fiber cutter;

[0018] S2: The outer surfaces of the two optical fibers to be connected are sequentially sleeved with a sealing sleeve, a locking head and a plug-in assembly;

[0019] S3: The distance between the optical fibers to be connected inside the plug-in assembly is adjusted, the pressing sleeve is screw-installed on the outer surface of the first screw thread by rotating the rotating nut, at this time, the side edge of the locking block is pressed by the conical groove and locked on the outer surface of the optical fiber to be connected, and the fixing of the optical fiber to be connected inside the plug-in assembly is completed;

[0020] S4: The connector is taken out, the fiber core of the optical fiber to be connected fixed inside the plug-in assembly is inserted into the inside of the fixing frame, the fiber cores of the optical fibers to be connected at both ends of the fixing frame are in contact with each other inside the fixing frame, and the fiber cores of the optical fibers to be connected at both ends are kept in a certain bending state, at this time, the plug-in block is inserted into the inside of the supporting sleeve, the plug-in block is deformed and makes the clamping block clamped in the inside of the clamping groove through the reaction force of itself, the top rod is inserted into the inside of the moving groove and moves the sliding blocks on both sides of the fixing frame towards each other, the spring sheet is pressed at both ends, the spring sheet is deformed, and is pressed to the side edge of the fiber core of the optical fiber to be connected through the through groove on the side edge of the sliding groove, with the deformation of the spring sheet, the auxiliary ball moves to both sides and assists the side edge of the fiber core, and the stability of the fiber core is kept.

[0021] S5: Move the auxiliary head to the side of the locking head, so that the extrusion springs at both ends are extruded on the side of the locking head, and the rotating head is screwed on the outer surface of the threaded pipe by rotating the rotating head, and the movable air bag inside the sleeve groove is pushed by the top ring, so that the supporting spring is compressed, the gas inside the movable air bag flows into the inside of the sealing air bag through the air flow groove, the sealing air bag expands, and the outer surface of the to-be-connected optical fiber is wrapped and sealed.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] 1、The spring sheet is arranged, when the top rod pushes the side of the sliding block through the moving groove, the both ends of the spring sheet are extruded, the spring sheet is deformed, bent, and the fiber core of the to-be-connected optical fiber is extruded and fixed through the spring sheet, at the same time, the both sides of the auxiliary ball are moved through the deformation of the spring sheet, the both sides of the fiber core of the to-be-connected optical fiber are fixed, and the stability of the connection of the two to-be-connected optical fibers is maintained, and the reliability of the connection of the to-be-connected optical fibers is improved.

[0024] 2、The cavity is arranged, when the fiber cores of the two to-be-connected optical fibers are extruded and contacted, the fiber cores of the to-be-connected optical fibers are bent inside the cavity, the fiber cores of the two to-be-connected optical fibers are always in the extruded and contacted state through the reaction force of the fiber cores, the temperature thermal expansion and cold contraction or other external factors are avoided, the gap between the two to-be-connected optical fibers is avoided, and the stability of the connection of the to-be-connected optical fibers is affected.

[0025] 3、The movable air bag is arranged on the inner wall of the threaded pipe, when the rotating head is rotated and screwed on the side of the threaded pipe, the top ring is inserted into the inside of the sleeve groove, and the movable air bag is extruded, so that the gas inside the movable air bag flows into the inside of the sealing air bag through the air flow groove, the sealing air bag expands, the outer surface of the to-be-connected optical fiber is sealed, dust and water vapor and other external factors are avoided, the connection of the to-be-connected optical fiber is kept clean, and the signal loss or reflection caused by small dirt or dust is avoided, so that it can adapt to multiple scenes.

[0026] 4、The two to-be-connected optical fibers are connected stably, without the need for expensive equipment, without the need for injecting glue, solidifying the glue and other operations, and the disassembly and assembly are flexible and convenient, and the maintenance and replacement are convenient. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the present application;

[0028] Figure 2 is a schematic diagram of the disassembly structure of the connecting device of the present application;

[0029] Figure 3 This is a schematic diagram of the cross-sectional structure of the connector of the present invention;

[0030] Figure 4 This is a schematic diagram of the plug-in assembly structure of the present invention;

[0031] Figure 5 This is a cross-sectional view of the locking head of the present invention;

[0032] Figure 6 This is a cross-sectional view of the protective sleeve of the present invention;

[0033] Figure 7 This is an exploded view of the sealing sleeve locking head of the present invention;

[0034] Figure 8 This is a cross-sectional view of the sealing sleeve of the present invention.

[0035] In the diagram: 1. Connector; 2. Plug-in assembly; 3. Locking head; 4. Protective sleeve; 5. Sealing sleeve; 6. Fiber optic cable to be connected; 11. Fixing bracket; 12. Support sleeve; 13. Snap-in slot; 14. Moving slot; 15. Sliding block; 16. Insertion slot; 17. Sliding slot; 18. Spring plate; 19. Return spring; 110. Auxiliary ball; 111. Support block; 112. Cavity; 21. Connector head; 22. Locking block; 23. ... 1. Thread; 24. Insert block; 25. Locking block; 26. Top rod; 31. Compression sleeve; 32. Rotating nut; 33. Second thread; 34. Tapered groove; 41. Fixed sleeve; 42. Rotating head; 43. Top ring; 51. Auxiliary head; 52. Threaded tube; 53. Compression spring; 54. Sleeve groove; 55. Movable airbag; 56. Support spring; 57. Tapered sleeve; 58. Ventilation groove; 59. Sealing airbag; 510. Airflow groove. Detailed Implementation

[0036] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0037] Example 1, as Figures 1-4 As shown, a high-stability optical fiber connection device includes a connector 1, with plug-in components 2 installed on both sides of the connector 1, and locking heads 3 threaded on the side of the plug-in components 2. Optical fibers 6 to be connected are connected to both sides of the connector 1. The plug-in components 2 and locking heads 3 are movably sleeved on the outer surface of the optical fibers 6 to be connected. A protective sleeve 4 is fixedly connected to the outer surface of the connector 1. Sealing sleeves 5 are threaded on both sides of the protective sleeve 4. The sealing sleeves 5 are movably sleeved on the outer surface of the plug-in components 2 and locking heads 3.

[0038] like Figure 3As shown, the connector 1 comprises a fixed frame 11, both sides of the fixed frame 11 are fixedly installed with support sleeves 12, both sides of the support sleeve 12 are provided with clamping grooves 13, both sides of the support sleeve 12 close to the fixed frame 11 are provided with moving grooves 14, the moving grooves 14 are slidably installed with sliding blocks 15, one side of the sliding block 15 is provided with an insertion slot 16, both sides of the fixed frame 11 are provided with sliding grooves 17, the sliding grooves 17 are movably sleeved with spring sheets 18, both sides of the spring sheet 18 are fixedly connected with the sliding block 15, both sides of the sliding groove 17 are fixedly installed with return springs 19, the side edge of the return spring 19 is fixedly installed with an auxiliary ball 110, the auxiliary ball 110 is slidably installed in the sliding groove 17, the sliding groove 17 of the fixed frame 11 is provided with a through groove on the opposite side, the auxiliary ball 110 is slidably installed in the through groove, and the spring sheet 18 is movably installed in the sleeve groove.

[0039] Among them, the spring sheet 18 is an elastic metal, both sides of the fixed frame 11 are fixedly installed with support blocks 111, the inside of the support block 111 is provided with a cavity 112, the core of the to-be-connected optical fiber 6 is inserted and installed between the two sliding grooves 17 of the fixed frame 11, and the spring sheet 18 and the auxiliary ball 110 are movably installed on the side of the core of the to-be-connected optical fiber 6.

[0040] By the spring sheet 18 being an elastic metal, when the ejector rod 26 pushes the side edge of the sliding block 15 through the moving groove 14, the two ends of the spring sheet 18 are extruded, the spring sheet 18 is deformed, bent, and extrudes and fixes the core of the to-be-connected optical fiber 6 through the spring sheet 18, and at the same time, the deformation of the spring sheet 18 moves the auxiliary ball 110 on both sides, fixes the core of the to-be-connected optical fiber 6 on both sides, and further maintains the stability of the connection of the two to-be-connected optical fibers 6.

[0041] By providing the cavity 112, when the cores of the two ends of the to-be-connected optical fiber 6 are extruded and contacted with each other, the core of the to-be-connected optical fiber 6 is bent in the cavity 112, and through the reaction force of the to-be-connected optical fiber 6 itself, the cores of the two ends of the to-be-connected optical fiber 6 are always in the extruded and contacted state, avoiding the influence of temperature thermal expansion and cold contraction or other external factors, so as to avoid the generation of gaps between the two to-be-connected optical fibers 6, and affect the stability of the connection of the to-be-connected optical fiber 6.

[0042] In example two, as Figures 1-5As shown in the high-stability fiber connection device, the plug-in assembly 2 comprises a connector 21, a locking block 22 is fixedly installed on one side of the connector 21, a first thread 23 is formed on the outer surface of the side of the locking block 22 close to the connector 21, the side of the locking block 22 away from the connector 21 is made of elastic material, plug-in blocks 24 are fixedly installed at both ends of the side of the connector 21 away from the locking block 22, a clamping block 25 is fixedly installed on the outer side of one end of the plug-in block 24, and top rods 26 are fixedly installed at both ends of the side of the connector 21 close to the plug-in block 24.

[0043] As shown in the high-stability fiber connection device, Figure 4 the plug-in block 24 is movably sleeved in the inside of the supporting sleeve 12, the clamping block 25 is clamped and installed in the inside of the clamping groove 13, the top rod 26 is movably sleeved in the inside of the moving groove 14 and is plug-in installed in the inside of the plug-in groove 16 on the side of the sliding block 15, the connector 21 is plug-in installed on the outer surface of one side of the supporting sleeve 12, and the connector 21 and the locking block 22 are movably sleeved on the outer surface of the fiber to be connected 6.

[0044] As shown in the high-stability fiber connection device, Figure 5 the locking head 3 comprises a pressing sleeve 31, a rotating nut 32 is fixedly sleeved on the outer surface of one end of the pressing sleeve 31, a second thread 33 is formed on the inner wall of the pressing sleeve 31 close to the rotating nut 32, and a tapered groove 34 is formed on the side of the pressing sleeve 31 away from the second thread 33.

[0045] The second thread 33 is threadedly installed on the outer surface of the first thread 23, the pressing sleeve 31 is movably sleeved on one side of the locking block 22, and the shape of the tapered groove 34 corresponds to the shape of the locking block 22.

[0046] The side of the locking block 22 away from the connector 21 is made of elastic material, the shape of the tapered groove 34 corresponds to the shape of the locking block 22, the second thread 33 is threadedly installed on the outer surface of the first thread 23, the side of the locking block 22 is extruded by the tapered groove 34, and the locking block 22 is locked on the outer surface of the fiber to be connected 6, so that the fixation of the fiber to be connected 6 in the plug-in assembly 2 is completed.

[0047] As shown in the high-stability fiber connection device, Figure 1 , Figures 6-8 the protection sleeve 4 comprises a fixed sleeve 41, the fixed sleeve 41 is fixedly sleeved on the outer surface of the fixed frame 11, rotating heads 42 are rotatably installed on both sides of the fixed sleeve 41, a threaded groove is formed on the inner wall of the rotating head 42, top rings 43 are fixedly installed on both sides of the fixed sleeve 41, and the top rings 43 are located in the inside of the rotating head 42.

[0048] As shown in the high-stability fiber connection device, Figures 7-8As shown, the sealing sleeve 5 comprises an auxiliary head 51, one side of the auxiliary head 51 is fixedly provided with a conical sleeve 57, the inside of the auxiliary head 51 is fixedly provided with a threaded tube 52, the side of the threaded tube 52 is provided with a sleeve slot 54, the inside of the sleeve slot 54 movably sleeves an active air bag 55, the inside of the active air bag 55 is provided with a supporting spring 56, the inside of the auxiliary head 51 movably sleeves an extrusion spring 53, one end of the extrusion spring 53 movably sleeves the outer surface of the locking head 3.

[0049] As shown in the figure, Figure 8 The conical sleeve 57 is provided with an airflow groove 510 on one side close to the auxiliary head 51, the active air bag 55 is provided with a plurality of air grooves 58 on one side close to the conical sleeve 57, the active air bag 55 is communicated with the airflow groove 510 through the air grooves 58, the inner wall of the conical sleeve 57 is provided with a sealing air bag 59 on one side, the sealing air bag 59 is communicated with the airflow groove 510 on one side, the rotating head 42 is screwedly installed on the outer surface of the threaded tube 52, and the top ring 43 is insertedly installed in the inside of the sleeve slot 54.

[0050] By setting the active air bag 55 on the inner wall of the threaded tube 52, when the rotating head 42 rotates and the threaded tube 52 is fixedly threaded on the side, the top ring 43 is inserted into the inside of the sleeve slot 54 and extrudes the active air bag 55, so that the gas in the active air bag 55 flows into the inside of the sealing air bag 59 through the airflow groove 510, the sealing air bag 59 expands to form a seal on the outer surface of the to-be-connected optical fiber 6, so that dust, water vapor and other external factors are avoided to reach the connection of the to-be-connected optical fiber 6, the to-be-connected optical fiber 6 is kept clean at the connection, and small dirt or dust is avoided to cause signal loss or reflection, so that it can adapt to multiple scenes.

[0051] Embodiment four is a connection method of a high-stability optical fiber connection device, comprising the following steps:

[0052] S1: The outer sheath of the optical fiber is peeled off to expose the core and cladding of the optical fiber, the optical fiber is cut, and the optical fiber is cut into a flat end face by using an optical fiber cutting machine;

[0053] S2: The outer surfaces of the two to-be-connected optical fibers 6 are sequentially sleeved with the sealing sleeve 5, the locking head 3 and the plug-in assembly 2;

[0054] S3: The distance of the to-be-connected optical fibers 6 in the plug-in assembly 2 is adjusted, the extrusion sleeve 31 is screwedly installed on the outer surface of the first thread 23 by rotating the rotating nut 32, at this time, the side of the locking block 22 is extruded by the conical groove 34 and locked on the outer surface of the to-be-connected optical fiber 6, and the fixing of the to-be-connected optical fiber 6 in the plug-in assembly 2 is completed;

[0055] S4: take out the connector 1, insert the fiber core of the to-be-connected optical fiber 6 fixed inside the plug-in assembly 2 into the inside of the fixing frame 11, make the fiber cores of the to-be-connected optical fibers 6 at both ends of the fixing frame 11 contact each other inside the fixing frame 11, and keep the fiber cores of the to-be-connected optical fibers 6 at both ends in a certain bending state, at this time, the plug-in block 24 is plugged into the inside of the supporting sleeve 12, the plug-in block 24 is deformed and clamped in the clamping groove 13 in the clamping block 25 through the reaction force of itself, the top rod 26 is plugged into the inside of the moving groove 14 and pushes the sliding blocks 15 at both sides of the fixing frame 11 to move towards each other, the spring sheets 18 at both ends are squeezed, the spring sheets 18 are deformed, and are squeezed to the side edges of the fiber cores of the to-be-connected optical fibers 6 through the through grooves on the side edges of the sliding grooves 17, with the deformation of the spring sheets 18, the auxiliary balls 110 move to both sides and assist the side edges of the fiber cores, and keep the fiber cores stable;

[0056] S5: move the auxiliary head 51 to the side edge of the locking head 3, make the two ends of the squeezing spring 53 squeeze the side edge of the locking head 3, and make the rotating head 42 screw on the outer surface of the threaded pipe 52 by rotating the rotating head 42, at the same time, the top ring 43 pushes the movable air bag 55 in the sleeve groove 54, makes the supporting spring 56 compressed, the gas in the movable air bag 55 enters the inside of the sealed air bag 59 through the air flow groove 510, the sealed air bag 59 expands, and the outer surface of the to-be-connected optical fiber 6 is wrapped to form a seal.

[0057] The basic principles and main features of the present application and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-stability optical fiber connection device, comprising a connector (1), characterized in that: The connector (1) is fitted with a plug assembly (2) on both sides. A locking head (3) is threaded on the side of the plug assembly (2). Optical fibers (6) to be connected are connected to both sides of the connector (1). The plug assembly (2) and the locking head (3) are movably sleeved on the outer surface of the optical fiber (6) to be connected. A protective sleeve (4) is fixedly connected to the outer surface of the connector (1). A sealing sleeve (5) is threaded on both sides of the protective sleeve (4). The sealing sleeve (5) is movably sleeved on the outer surface of the plug assembly (2) and the locking head (3). The connector (1) includes a fixing frame (11), on both sides of the fixing frame (11) a support sleeve (12) is fixedly installed, on both sides of the support sleeve (12) a snap-fit ​​groove (13) is opened, on both sides of the support sleeve (12) near the fixing frame (11) a moving groove (14) is opened, a sliding block (15) is slidably installed in the moving groove (14), a insertion groove (16) is opened on one side of the sliding block (15), and sliding grooves (17) are opened on both sides inside the fixing frame (11), the sliding grooves (17) are movable inside A spring sheet (18) is connected to the sliding block (15) on both sides. A return spring (19) is fixedly installed on both sides inside the sliding groove (17). An auxiliary ball (110) is fixedly installed on the side of the return spring (19). The auxiliary ball (110) is slidably installed inside the sliding groove (17). A through groove is opened on the opposite side of the sliding groove (17) inside the fixing frame (11). The auxiliary ball (110) is slidably installed inside the through groove. The spring sheet (18) is movably installed inside the sleeve groove.

2. The high-stability optical fiber connection device according to claim 1, characterized in that: The spring sheet (18) is made of elastic metal. Support blocks (111) are fixedly installed on both sides of the fixing frame (11). A cavity (112) is opened inside the support block (111). The fiber core of the optical fiber (6) to be connected is inserted and installed inside the fixing frame (11) between the sliding grooves (17) on both sides. The spring sheet (18) and the auxiliary ball (110) are movably installed on the side of the fiber core of the optical fiber (6) to be connected.

3. The high-stability optical fiber connection device according to claim 2, characterized in that: The plug-in assembly (2) includes a connector (21), a locking block (22) is fixedly installed on one side of the connector (21), a first thread (23) is provided on the outer surface of the locking block (22) near the connector (21), the side of the locking block (22) away from the connector (21) is made of elastic material, plug-in blocks (24) are fixedly installed on both ends of the side of the connector (21) away from the locking block (22), a locking block (25) is fixedly installed on one end of the outer side of the plug-in block (24), and a push rod (26) is fixedly installed on both ends of the side of the connector (21) near the plug-in block (24).

4. The high-stability optical fiber connection device according to claim 3, characterized in that: The plug block (24) is movably sleeved inside the support sleeve (12), the locking block (25) is locked inside the locking groove (13), the top rod (26) is movably sleeved inside the moving groove (14) and inserted into the insertion groove (16) on the side of the sliding block (15), the connector (21) is inserted into the outer surface on one side of the support sleeve (12), and the connector (21) and the locking block (22) are movably sleeved on the outer surface of the optical fiber (6) to be connected.

5. A high-stability optical fiber connection device according to claim 4, characterized in that: The locking head (3) includes a compression sleeve (31), and a rotating nut (32) is fixedly sleeved on the outer surface of one end of the compression sleeve (31). A second thread (33) is provided on the inner wall of the compression sleeve (31) near the rotating nut (32), and a tapered groove (34) is provided on the side of the compression sleeve (31) away from the second thread (33).

6. A high-stability optical fiber connection device according to claim 5, characterized in that: The second thread (33) is threaded on the outer surface of the first thread (23), the compression sleeve (31) is movably sleeved on one side of the locking block (22), and the shape of the tapered groove (34) corresponds to the shape of the locking block (22).

7. The high-stability optical fiber connection device according to claim 1, characterized in that: The protective sleeve (4) includes a fixed sleeve (41), which is fixedly sleeved on the outer surface of the fixed frame (11). Rotating heads (42) are rotatably installed on both sides of the fixed sleeve (41). The inner wall of the rotating head (42) is provided with a threaded groove. Top rings (43) are fixedly installed on both sides of the fixed sleeve (41). The top rings (43) are located inside the rotating head (42).

8. A high-stability optical fiber connection device according to claim 7, characterized in that: The sealing sleeve (5) includes an auxiliary head (51), a conical sleeve (57) is fixedly installed on one side of the auxiliary head (51), a threaded tube (52) is fixedly installed inside the auxiliary head (51), a sleeve groove (54) is opened on the side of the threaded tube (52), a movable airbag (55) is movably sleeved inside the sleeve groove (54), a support spring (56) is provided inside the movable airbag (55), a compression spring (53) is movably sleeved inside the auxiliary head (51), and one end of the compression spring (53) is movably sleeved on the outer surface of the locking head (3).

9. A high-stability optical fiber connection device according to claim 8, characterized in that: The conical sleeve (57) has an airflow groove (510) on the side near the auxiliary head (51), and the movable airbag (55) has multiple ventilation grooves (58) on the side near the conical sleeve (57). The movable airbag (55) is connected to the airflow groove (510) through the ventilation groove (58). A sealing airbag (59) is provided on one side of the inner wall of the conical sleeve (57). One side of the sealing airbag (59) is connected to the airflow groove (510). The rotating head (42) is threaded onto the outer surface of the threaded tube (52), and the top ring (43) is inserted into the inside of the sleeve groove (54).

10. A connection method for a high-stability optical fiber connection device as described in any one of claims 1-9, characterized in that: Includes the following steps: S1: Strip the outer sheath of the optical fiber to expose the fiber core and cladding, cut the optical fiber, and use an optical fiber cleaver to cut the optical fiber into a flat end face. S2: Sequentially cover the outer surfaces of the two optical fibers (6) to be connected with a sealing sleeve (5), a locking head (3) and a plug assembly (2). S3: Adjust the distance between the optical fiber (6) to be connected and the plug assembly (2). By rotating the rotating nut (32), the compression sleeve (31) is threaded onto the outer surface of the first thread (23). At this time, the side of the locking block (22) is squeezed by the tapered groove (34) and locked onto the outer surface of the optical fiber (6) to be connected, thus completing the fixation of the optical fiber (6) to be connected inside the plug assembly (2). S4: Take out the connector (1), insert the fiber core of the optical fiber (6) to be connected, which is fixed inside the plug assembly (2), into the inside of the fixing frame (11), so that the fiber cores of the optical fibers (6) to be connected at both ends of the fixing frame (11) are in contact with each other inside the fixing frame (11), and keep the fiber cores of the optical fibers (6) to be connected at both ends in a certain bent state. At this time, the plug block (24) is inserted into the inside of the support sleeve (12). The plug block (24) deforms and, through its own reaction force, makes the locking block ( 25) The push rod (26) is inserted into the inside of the snap-fit ​​groove (14) and pushes the sliding blocks (15) on both sides of the fixing frame (11) to move towards each other, squeezing the two ends of the spring sheet (18). The spring sheet (18) deforms and is squeezed to the side of the fiber core of the optical fiber (6) to be connected through the through groove on the side of the sliding groove (17). As the spring sheet (18) deforms, the auxiliary ball (110) moves to both sides and assists the side of the fiber core to maintain the stability of the fiber core. S5: Move the auxiliary head (51) to the side of the locking head (3), so that the compression springs (53) at both ends are pressed against the side of the locking head (3), and by rotating the rotating head (42), the rotating head (42) is threaded onto the outer surface of the threaded tube (52). At the same time, the top ring (43) pushes the movable airbag (55) inside the socket groove (54), so that the support spring (56) is compressed. The gas inside the movable airbag (55) enters the interior of the sealing airbag (59) through the airflow groove (510). The sealing airbag (59) expands and wraps the outer surface of the optical fiber (6) to be connected, forming a seal.

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