High-stability optical fiber connecting device and using method

Abstract

The invention discloses a high-stability optical fiber connecting device and a using method, and relates to the technical field of optical fiber communication accessories, the high-stability optical fiber connecting device comprises a connector, plug-in assemblies are installed on the two sides of the connector in a plug-in mode, locking heads are installed on the side edges of the plug-in assemblies in a threaded mode, and the two sides of the connector are connected with optical fibers to be connected. The plug-in assembly and the locking head are movably sleeved on the outer surface of the optical fiber to be connected, the outer surface of the connector is fixedly connected with a protective sleeve, and sealing sleeves are installed on two sides of the protective sleeve in a threaded mode. According to the high-stability optical fiber connecting device and the using method, the fiber cores of the to-be-connected optical fibers are extruded and fixed through the spring pieces, the auxiliary balls move on the two sides, and the two sides of the fiber cores of the to-be-connected optical fibers are fixed, so that the connecting stability of the two to-be-connected optical fibers is kept; the outer surface of the to-be-connected optical fiber is sealed, and the connection part of the to-be-connected optical fiber is kept clean, so that the optical fiber connector can adapt to multiple scenes, is flexible and convenient to disassemble and assemble, and is convenient to maintain and replace.

Description

Technical Field

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

[0002] Optical fiber is a light transmission tool. In order to connect optical fiber to various electronic devices and allow the information it transmits to be used by such electronic devices, connectors must be used as intermediaries between optical fiber and electronic devices. Optical fiber connection is a technology that connects optical fiber to optical fiber or optical fiber to other devices. It is mainly used in optical communication systems. There are two main ways to connect optical fiber: fiber fusion splicing and fiber connector connection. Fiber fusion splicing is a method of connecting two optical fibers together by high-temperature melting. This method can achieve the lowest signal loss and reflection and is the first choice for long-distance optical fiber communication. Fiber connector connection is a method of connecting optical fibers together through fiber optic connectors. This method is easy to maintain and replace and is suitable for short-distance connections.

[0003] However, for the above two optical fiber connection methods, although optical fiber fusion splicing has high reliability and low insertion loss, the fusion splicing equipment is expensive and the fusion splicing operation is difficult. While pipeline connector connection, although convenient and flexible, has poor stability and is relatively open, it is easily affected by external interference such as dust and moisture. In order to address the deficiencies of the prior art, we propose a high-stability optical fiber connection device and a method of use. Summary of the invention

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

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A high-stability optical fiber connection device, comprising a connector, plug-in components are installed on both sides of the connector, locking heads are installed on the side edges of the plug-in components by thread, optical fibers to be connected are connected on both sides of the connector, the plug-in components and the locking heads are movably sleeved on the outer surfaces of the optical fibers to be connected, a protective sleeve is fixedly connected to the outer surface of the connector, sealing sleeves are installed on both sides of the protective sleeve by thread, and the sealing sleeves are movably sleeved on the outer surfaces of the plug-in components and the locking heads;

[0007] The connector includes a fixing frame, support sleeves are fixedly installed on both sides of the fixing frame, clamping grooves are provided on both sides of the support sleeve, moving grooves are provided inside the two sides of the support sleeve close to the fixing frame, a sliding block is slidably installed inside the moving groove, an inserting groove is provided on one side of the sliding block, sliding grooves are provided on both sides inside the fixing frame, a spring sheet is movably sleeved inside the sliding groove, both sides of the spring sheet are fixedly connected to the sliding block, return springs are fixedly installed on both sides inside the sliding groove, an auxiliary ball is fixedly installed on the side of the return spring, the auxiliary ball is slidably installed inside the sliding groove, a through groove is provided on the opposite side of the sliding groove inside the fixing frame, the auxiliary ball is slidably installed inside the through groove, and the spring sheet is movably installed inside the sleeve groove.

[0008] Preferably, the spring sheet is elastic metal, support blocks are fixedly installed on both sides of the fixed frame, a cavity is opened inside the support block, the core of the optical fiber to be connected is plugged and installed inside the fixed frame between the sliding grooves on both sides, and the spring sheet and the auxiliary ball are movably installed on the side of the core of the optical fiber to be connected.

[0009] Preferably, the plug-in assembly includes a connector, a locking block is fixedly installed on one side of the connector, a first thread is provided on the outer surface of the locking block on a side close to the connector, the side of the locking block away from the connector is made of elastic material, plug-in blocks are fixedly installed on both ends of the connector away from the locking block, a clamping block is fixedly installed on one end of the outer side of the plug-in block, and push rods are fixedly installed on both ends of the connector close to the plug-in block.

[0010] Preferably, the plug-in block is movably sleeved inside the supporting sleeve, the clamping block is clamped inside the clamping groove, the push rod is movably sleeved inside the movable groove and plugged inside the inserting groove on the side of the sliding block, the connecting head is plugged into the outer surface of one side of the supporting sleeve, and the connecting head and the locking block are movably sleeved on the outer surface of the optical fiber to be connected.

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

[0012] Preferably, the second thread is threadably mounted on the outer surface of the first thread, the extrusion 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 includes a fixed sleeve, which is fixedly connected to the outer surface of the fixed frame, and rotating heads are rotatably installed on both sides of the fixed sleeve. The inner wall of the rotating head is provided with a threaded groove, and top rings are fixedly installed on both sides of the fixed sleeve, and the top rings are located inside the rotating head.

[0014] Preferably, the sealing sleeve includes an auxiliary head, a conical sleeve is fixedly installed on one side of the auxiliary head, a threaded tube is fixedly installed inside the auxiliary head, a sleeve groove is opened on the side of the threaded tube, an active air bag is movably sleeved inside the sleeve groove, a support spring is arranged inside the active air bag, an extrusion spring is movably sleeved inside the auxiliary head, and one end of the extrusion spring is movably sleeved on the outer surface of the locking head.

[0015] Preferably, an air flow groove is provided on the side of the conical sleeve close to the auxiliary head, a plurality of ventilation grooves are provided on the side of the movable airbag close to the conical sleeve, the movable airbag is connected with the air flow groove through the ventilation groove, a sealing airbag is provided on one side of the inner wall of the conical sleeve, one side of the sealing airbag is connected with the air flow groove, the rotating head is threadedly installed on the outer surface of the threaded tube, and the top ring is plugged into the inside of the sleeve groove.

[0016] A connection method for a high-stability optical fiber connection device comprises the following steps:

[0017] S1: Strip the outer sheath of the optical fiber to expose the core and cladding of the optical fiber, cut the optical fiber, and use a fiber optic cutting machine to cut the optical fiber into a flat end face;

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

[0019] S3: Adjust the distance between the optical fibers to be connected and the inside of the plug assembly, and rotate the rotating nut so that the extrusion sleeve thread is installed on the outer surface of the first thread. At this time, the side of the locking block is squeezed by the tapered groove and locked on the outer surface of the optical fiber to be connected, thereby completing the fixation of the optical fiber to be connected inside the plug assembly;

[0020] S4: Take out the connector, insert the core of the optical fiber to be connected fixed inside the plug-in assembly into the inside of the fixing frame, so that the cores of the optical fibers to be connected at both ends of the fixing frame contact each other inside the fixing frame, and keep the cores of the optical fibers to be connected at both ends in a certain bending state. At this time, the plug-in block is plugged into the inside of the supporting sleeve, and the plug-in block is deformed and uses its own reaction force to make the clamping block clamped in the inside of the clamping groove, and the top rod is plugged into the inside of the moving groove, and pushes the sliding blocks on both sides of the fixing frame to move toward each other, squeezing the two ends of the spring sheet, so that the spring sheet is deformed and squeezed to the side of the core of the optical fiber to be connected through the through groove on the side of the sliding groove. With the deformation of the spring sheet, the auxiliary ball moves to both sides and assists the side of the core to keep the core stable;

[0021] S5: Move the auxiliary head to the side of the locking head so that the extrusion springs at both ends are squeezed on the side of the locking head, and by rotating the rotating head, the rotating head thread is installed on the outer surface of the threaded tube. At the same time, the top ring pushes the movable airbag inside the sleeve groove to compress the supporting spring. The gas inside the movable airbag enters the interior of the sealing airbag through the airflow groove, and the sealing airbag expands to wrap the outer surface of the optical fiber to be connected to form a seal.

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

[0023] 1. The present invention, through the provision of a spring sheet, when the push rod pushes the side of the sliding block through the movable groove, the two ends of the spring sheet are squeezed, the spring sheet is deformed and bent, and the core of the optical fiber to be connected is squeezed and fixed by the spring sheet. At the same time, through the deformation of the spring sheet, the two sides of the auxiliary ball are moved to assist in the fixation of the two sides of the core of the optical fiber to be connected, thereby maintaining the stability of the connection between the two optical fibers to be connected and improving the reliability of the connection of the optical fibers to be connected.

[0024] 2. The present invention sets a cavity so that when the cores of the optical fibers to be connected at both ends are squeezed and contacted with each other, the cores of the optical fibers to be connected are bent inside the cavity. The cores of the optical fibers to be connected at both ends are always in a state of mutual squeezing and contacting due to their own reaction force, thereby avoiding thermal expansion and contraction, or the influence of other external factors, which may cause a gap between the two optical fibers to be connected and affect the stability of the connection of the optical fibers to be connected.

[0025] 3. The present invention arranges an active airbag on the inner wall of the threaded tube. When the rotating head rotates and the thread is fixed on the side of the threaded tube, the top ring is inserted into the inside of the sleeve groove and squeezes the active airbag, so that the gas inside the active airbag flows to the inside of the sealing airbag through the airflow groove. The sealing airbag expands to form a seal for the outer surface of the optical fiber to be connected, preventing external factors such as dust and water vapor from reaching the connection of the optical fiber to be connected, keeping the connection of the optical fiber to be connected clean, and avoiding signal loss or reflection caused by tiny dirt or dust, so that it can adapt to multiple scenarios.

[0026] 4. The present invention can stably connect the optical fibers at both ends, without the need for expensive equipment, injection of glue, and operations such as solidification of the glue. It is flexible and convenient to disassemble and assemble, and is easy to maintain and replace. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0028] Figure 2 It is a schematic diagram of the exploded structure of the connection device of the present invention;

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

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

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

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

[0033] Figure 7 It is a schematic diagram of the exploded structure of the sealing sleeve locking head of the present invention;

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

[0035] In the figure: 1, connector; 2, plug assembly; 3, locking head; 4, protective cover; 5, sealing sleeve; 6, optical fiber to be connected; 11, fixing frame; 12, supporting sleeve; 13, clamping groove; 14, moving groove; 15, sliding block; 16, inserting groove; 17, sliding groove; 18, spring sheet; 19, reset spring; 110, auxiliary ball; 111, supporting block; 112, cavity; 21, connector; 22, locking block; 23, A thread; 24, a plug-in block; 25, a clamping block; 26, a push rod; 31, an extrusion sleeve; 32, a rotating nut; 33, a second thread; 34, a tapered groove; 41, a fixed sleeve; 42, a rotating head; 43, a top ring; 51, an auxiliary head; 52, a threaded tube; 53, an extrusion spring; 54, a sleeve groove; 55, a movable airbag; 56, a supporting spring; 57, a tapered sleeve; 58, a ventilation groove; 59, a sealing airbag; 510, an airflow groove. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0037] Embodiment 1, as Figure 1-Figure 4 As shown, a high-stability optical fiber connection device includes a connector 1, plug-in components 2 are installed on both sides of the connector 1, and locking heads 3 are installed on the sides of the plug-in components 2 by threads, and optical fibers 6 to be connected are connected to both sides of the connector 1, and the plug-in components 2 and the locking heads 3 are movably sleeved on the outer surface of the optical fibers 6 to be connected, and a protective sleeve 4 is fixedly connected to the outer surface of the connector 1, and sealing sleeves 5 are installed on both sides of the protective sleeve 4 by threads, and the sealing sleeves 5 are movably sleeved on the outer surfaces of the plug-in components 2 and the locking heads 3;

[0038] like Figure 3As shown, the connector 1 includes a fixed frame 11, and support sleeves 12 are fixedly installed on both sides of the fixed frame 11, and clamping grooves 13 are opened on both sides of the support sleeve 12, and movable grooves 14 are opened inside the two sides of the support sleeve 12 close to the fixed frame 11, and a sliding block 15 is slidably installed inside the movable groove 14, and an inserting groove 16 is opened on one side of the sliding block 15, and sliding grooves 17 are opened on both sides of the fixed frame 11, and a spring sheet 18 is movably sleeved inside the sliding groove 17, and both sides of the spring sheet 18 are fixedly connected to the sliding block 15, and reset springs 19 are fixedly installed on both sides of the sliding groove 17, and an auxiliary ball 110 is fixedly installed on the side of the reset spring 19, and the auxiliary ball 110 is slidably installed inside the sliding groove 17, and a through groove is opened on the side opposite to the sliding groove 17 inside the fixed frame 11, and the auxiliary ball 110 is slidably installed inside the through groove, and the spring sheet 18 is movably installed inside the sleeve groove.

[0039] Among them, the spring sheet 18 is elastic metal, and support blocks 111 are fixedly installed on both sides of the fixed frame 11. A cavity 112 is opened inside the support block 111. The core of the optical fiber 6 to be connected is plugged and installed inside the fixed 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 core of the optical fiber 6 to be connected.

[0040] Since the spring sheet 18 is made of elastic metal, when the top rod 26 pushes the side of the sliding block 15 through the movable groove 14, the two ends of the spring sheet 18 are squeezed, the spring sheet 18 is deformed and bent, and the core of the optical fiber 6 to be connected is squeezed and fixed by the spring sheet 18. At the same time, the deformation of the spring sheet 18 moves the two sides of the auxiliary ball 110 to assist in the fixation of the two sides of the core of the optical fiber 6 to be connected, thereby maintaining the stability of the connection between the two optical fibers 6 to be connected.

[0041] By setting the cavity 112, when the cores of the optical fibers 6 to be connected at both ends are squeezed and contacted with each other, the cores of the optical fibers 6 to be connected are bent inside the cavity 112. The cores of the optical fibers 6 to be connected at both ends are always in a state of mutual squeezing and contacting due to their own reaction force, thereby avoiding thermal expansion and contraction, or the influence of other external factors, which may cause a gap between the two optical fibers 6 to be connected and affect the stability of the connection of the optical fibers 6 to be connected.

[0042] Embodiment 2, as Figure 1-Figure 5As shown, a high-stability optical fiber connection device, the plug-in component 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 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 on both ends of the connector 21 away from the locking block 22, a clamping 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 connector 21 close to the plug-in block 24.

[0043] like Figure 4 As shown, the plug-in block 24 is movably sleeved inside the support sleeve 12, the clamping block 25 is clamped and installed inside the clamping groove 13, the top rod 26 is movably sleeved inside the movable groove 14, and is inserted and installed inside the insertion groove 16 on the side of the sliding block 15, the connector 21 is inserted and installed on the outer surface of 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.

[0044] like Figure 5 As shown, the locking head 3 includes an extrusion sleeve 31, and a rotating nut 32 is fixedly sleeved on the outer surface of one end of the extrusion sleeve 31. A second thread 33 is formed on the inner wall of the extrusion sleeve 31 close to the rotating nut 32, and a conical groove 34 is formed on the side of the extrusion sleeve 31 away from the second thread 33.

[0045] The second thread 33 is threadably mounted on the outer surface of the first thread 23 , the extrusion 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, and 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 squeezed by the tapered groove 34 and locked on the outer surface of the optical fiber 6 to be connected, thereby completing the fixation of the optical fiber 6 to be connected inside the plug-in assembly 2.

[0047] Embodiment three, as Figure 1 , Figure 6-Figure 8 As shown, a high-stability optical fiber connection device, the protective sleeve 4 includes a fixed sleeve 41, the fixed sleeve 41 is fixedly sleeved on the outer surface of the fixed frame 11, and 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, and top rings 43 are fixedly installed on both sides of the fixed sleeve 41. The top ring 43 is located inside the rotating head 42.

[0048] like Figure 7-8As shown, 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 provided on the side of the threaded tube 52, a movable air bag 55 is movably sleeved inside the sleeve groove 54, a support spring 56 is arranged inside the movable air bag 55, an extrusion spring 53 is movably sleeved inside the auxiliary head 51, and one end of the extrusion spring 53 is movably sleeved on the outer surface of the locking head 3.

[0049] like Figure 8 As shown, an air flow groove 510 is provided on one side of the conical sleeve 57 close to the auxiliary head 51, a plurality of ventilation grooves 58 are provided on one side of the movable air bag 55 close to the conical sleeve 57, the movable air bag 55 is connected with the air flow groove 510 through the ventilation groove 58, a sealing air bag 59 is provided on one side of the inner wall of the conical sleeve 57, one side of the sealing air bag 59 is connected with the air flow groove 510, the rotating head 42 is threadedly installed on the outer surface of the threaded tube 52, and the top ring 43 is plugged into the inside of the sleeve groove 54.

[0050] By arranging an active airbag 55 on the inner wall of the threaded tube 52, when the rotating head 42 rotates and the thread is fixed on the side of the threaded tube 52, the top ring 43 is inserted into the inside of the sleeve groove 54 and squeezes the active airbag 55, so that the gas inside the active airbag 55 flows to the inside of the sealing airbag 59 through the airflow groove 510, and the sealing airbag 59 expands to form a seal for the outer surface of the optical fiber 6 to be connected, preventing external factors such as dust and water vapor from reaching the connection of the optical fiber 6 to be connected, keeping the connection of the optical fiber 6 to be connected clean, and preventing tiny dirt or dust from causing signal loss or reflection, so that it can adapt to multiple scenarios.

[0051] Embodiment 4, a connection method of a high-stability optical fiber connection device, comprising the following steps:

[0052] S1: Strip the outer sheath of the optical fiber to expose the core and cladding of the optical fiber, cut the optical fiber, and use a fiber optic cutting machine to cut the optical fiber into a flat end face;

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

[0054] S3: Adjust the distance of the optical fiber 6 to be connected inside the plug assembly 2, and rotate the rotating nut 32 to make the extrusion sleeve 31 threadedly installed on 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 on the outer surface of the optical fiber 6 to be connected, thereby completing the fixation of the optical fiber 6 to be connected inside the plug assembly 2;

[0055] S4: Take out the connector 1, and insert the core of the optical fiber 6 to be connected fixed inside the plug-in assembly 2 into the inside of the fixed frame 11, so that the cores of the optical fibers 6 to be connected at both ends of the fixed frame 11 are in contact with each other inside the fixed frame 11, and the cores of the optical fibers 6 to be connected at both ends are kept in a certain bending state. At this time, the plug-in block 24 is plugged into the inside of the supporting sleeve 12, and the plug-in block 24 is deformed and, through its own reaction force, the clamping block 25 is clamped into the inside of the clamping groove 13, and the top rod 26 is plugged into the inside of the movable groove 14, and pushes the sliding blocks 15 on both sides of the fixed frame 11 to move toward each other, squeezing the two ends of the spring sheet 18, and the spring sheet 18 is deformed and squeezed to the side of the core of the optical fiber 6 to be connected through the through groove on the side of the sliding groove 17. With the deformation of the spring sheet 18, the auxiliary ball 110 moves to both sides and assists the side of the core to keep the core stable;

[0056] S5: Move the auxiliary head 51 to the side of the locking head 3 so that the extrusion springs 53 at both ends are squeezed on the side of the locking head 3, and by rotating the rotating head 42, the rotating head 42 is threadedly installed on the outer surface of the threaded tube 52. At the same time, the top ring 43 pushes the movable airbag 55 inside the sleeve groove 54 to compress the supporting spring 56. The gas inside the movable airbag 55 enters the interior of the sealing airbag 59 through the airflow groove 510, and the sealing airbag 59 expands to wrap the outer surface of the optical fiber 6 to be connected to form a seal.

[0057] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-stability optical fiber connection device, comprising a connector (1), characterized in that: The two sides of the connector (1) are plugged with plug-in components (2), the side edges of the plug-in components (2) are threadedly mounted with locking heads (3), the two sides of the connector (1) are connected with optical fibers (6) to be connected, the plug-in components (2) and the locking heads (3) are movably sleeved on the outer surfaces of the optical fibers (6) to be connected, the outer surface of the connector (1) is fixedly connected with a protective sleeve (4), the two sides of the protective sleeve (4) are threadedly mounted with sealing sleeves (5), and the sealing sleeves (5) are movably sleeved on the outer surfaces of the plug-in components (2) and the locking heads (3); The connector (1) comprises a fixing frame (11), support sleeves (12) are fixedly mounted on both sides of the fixing frame (11), and clamping grooves (13) are provided on both sides of the support sleeve (12), movable grooves (14) are provided inside the two sides of the support sleeve (12) close to the fixing frame (11), a sliding block (15) is slidably mounted inside the movable groove (14), and an inserting groove (16) is provided on one side of the sliding block (15), and sliding grooves (17) are provided inside the fixing frame (11), and the interior of the sliding groove (17) is movable. The movable sleeve is connected with a spring sheet (18), both sides of the spring sheet (18) are fixedly connected to the sliding block (15), both sides of the sliding groove (17) are fixedly installed with a return spring (19), the side 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), a through groove is opened on the side facing the sliding groove (17) in the fixed frame (11), the auxiliary ball (110) is slidably installed in the through groove, and the spring sheet (18) is movably installed in the sleeve groove.

2. A 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 mounted on both sides of the fixing frame (11). A cavity (112) is provided inside the support block (111). The core of the optical fiber (6) to be connected is inserted and mounted inside the fixing frame (11) between the sliding grooves (17) on both sides. The spring sheet (18) and the auxiliary ball (110) are movably mounted on the side of the core of the optical fiber (6) to be connected.

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

4. A high stability optical fiber connection device according to claim 3, characterized in that: The plug-in block (24) is movably sleeved inside the support sleeve (12), the clamping block (25) is clamped and installed inside the clamping groove (13), the push rod (26) is movably sleeved inside the movable groove (14) and is plugged and installed inside the insertion groove (16) on the side of the sliding block (15), the connector (21) is plugged and installed on the outer surface of 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) comprises an extrusion sleeve (31), the outer surface of one end of the extrusion sleeve (31) being fixedly sleeved with a rotating nut (32), a second thread (33) being provided on the inner wall of the extrusion sleeve (31) close to the rotating nut (32), and a conical groove (34) being provided on the side of the extrusion 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 threadably mounted on the outer surface of the first thread (23), the extrusion 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) comprises a fixed sleeve (41), the fixed sleeve (41) being fixedly sleeved on the outer surface of the fixed frame (11), a rotating head (42) being rotatably mounted on both sides of the fixed sleeve (41), a threaded groove being provided on the inner wall of the rotating head (42), and a top ring (43) being fixedly mounted on both sides of the fixed sleeve (41), the top ring (43) being located inside the rotating head (42).

8. The high stability optical fiber connection device according to claim 7, characterized in that: The sealing sleeve (5) comprises an auxiliary head (51), a conical sleeve (57) is fixedly mounted on one side of the auxiliary head (51), a threaded tube (52) is fixedly mounted inside the auxiliary head (51), a sleeve groove (54) is provided on the side of the threaded tube (52), a movable air bag (55) is movably sleeved inside the sleeve groove (54), a support spring (56) is arranged inside the movable air bag (55), an extrusion spring (53) is movably sleeved inside the auxiliary head (51), and one end of the extrusion 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) is provided with an air flow groove (510) on one side close to the auxiliary head (51), the movable air bag (55) is provided with a plurality of ventilation grooves (58) on one side close to the conical sleeve (57), the movable air bag (55) is connected to the air flow groove (510) through the ventilation groove (58), a sealing air bag (59) is provided on one side of the inner wall of the conical sleeve (57), one side of the sealing air bag (59) is connected to the air flow groove (510), the rotating head (42) is threadedly mounted on the outer surface of the threaded tube (52), and the top ring (43) is plugged and mounted inside the sleeve groove (54).

10. A connection method for a high-stability optical fiber connection device according to any one of claims 1 to 9, characterized in that: The steps include: S1: Strip the outer sheath of the optical fiber to expose the core and cladding of the optical fiber, cut the optical fiber, and use a fiber optic cutting machine 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-in assembly (2); S3: Adjust the distance between the optical fiber (6) to be connected and the inside of the plug-in assembly (2), and rotate the rotating nut (32) so that the extrusion sleeve (31) is threadedly installed on the outer surface of the first thread (23). At this time, the side of the locking block (22) is squeezed by the conical groove (34) and locked on the outer surface of the optical fiber (6) to be connected, thereby completing the fixation of the optical fiber (6) to be connected in the plug-in assembly (2); S4: Take out the connector (1), insert the core of the optical fiber (6) to be connected fixed inside the plug-in assembly (2) into the inside of the fixing frame (11), so that the 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 the cores of the optical fibers (6) to be connected at both ends are kept in a certain bending state. At this time, the plug-in block (24) is plugged into the inside of the support sleeve (12), and the plug-in block (24) is deformed and through its own reaction force, the card block ( The spring sheet (18) is pressed against the side of the core of the optical fiber (6) to be connected. As the spring sheet (18) is deformed, the auxiliary ball (110) moves to both sides and assists the side of the core to maintain the stability of the core. S5: Move the auxiliary head (51) to the side of the locking head (3) so that the extrusion springs (53) at both ends are squeezed on the side of the locking head (3), and by rotating the rotating head (42), the rotating head (42) is threadedly installed on the outer surface of the threaded tube (52). At the same time, the top ring (43) pushes the movable airbag (55) inside the sleeve groove (54) to compress the supporting spring (56). The gas inside the movable airbag (55) enters the interior of the sealing airbag (59) through the airflow groove (510), and the sealing airbag (59) expands to wrap the outer surface of the optical fiber (6) to be connected to form a seal.

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