Optical fiber connector assembly and connector system

Abstract

The invention provides an optical fiber connector assembly and a connector system, the optical fiber connector assembly comprises a fixed sleeve, a plugging sleeve and a plugging core body, and the fixed sleeve is used for being detachably connected with a positioning piece along a first direction; the inserting sleeve is arranged in the fixed sleeve, the inserting sleeve and the fixed sleeve are movably arranged in the first direction, and the inserting sleeve and the fixed sleeve can relatively rotate around the axial direction of the fixed sleeve; the plugging sleeve is provided with a second limiting structure, and the second limiting structure is used for cooperating with the first limiting structure, so that the optical fiber connector assembly and the positioning member can be aligned along the first direction. The plugging core body is fixed in the plugging sleeve, the plugging core body can be plugged in the plugging hole, and the plugging core body is used for assembling an optical fiber. The plug-in sleeve can relatively rotate around the axial direction of the fixed sleeve to realize circumferential angle adjustment, and the second limiting structure of the plug-in sleeve is matched with the first limiting structure of the positioning piece, so that the relative position of the connector assembly and the positioning piece is locked in an alignment state along the first direction, and the core body is prevented from deviating.

Description

Technical Field

[0001] This application relates to the field of fiber optic connector technology, and in particular to a fiber optic connector assembly and connector system. Background Technology

[0002] In the information age, optical fiber communication, with its outstanding advantages such as high bandwidth, low loss, and strong anti-interference capability, has become a core technology carrier supporting key areas such as 5G communication, data center interconnection, industrial internet, and long-distance trunk transmission. As a key passive device enabling detachable and reusable connections between optical fibers, the reliability of optical fiber connectors directly determines the stability and efficiency of optical signal transmission, making them an indispensable basic component of optical fiber communication systems.

[0003] In existing technologies, fiber optic connectors typically rely on a plug-in / plug-out structure to perform insertion and disconnection operations. However, this type of structure has significant shortcomings in practical applications. Core alignment is prone to errors, leading to a decrease in overall connection performance and making it difficult to meet the stringent requirements for insertion loss stability in high-speed signal transmission. Moreover, manual insertion is prone to jamming, which not only significantly increases the difficulty of operation but may also cause scratches on the fiber end face or breakage of the fiber core due to forced insertion and removal by the operator, thereby shortening the connector's lifespan. Summary of the Invention

[0004] This application discloses an optical fiber connector assembly and connector system that can lock the relative position of the connector assembly and the positioning element in an aligned state along a first direction, thereby structurally preventing core offset.

[0005] To achieve the above objectives, this application discloses an optical fiber connector assembly for detachable connection with a positioning member, the positioning member having a insertion hole along a first direction, and a first limiting structure provided on the positioning member. The optical fiber connector assembly includes: A fixing sleeve is used to be detachably connected to the positioning member along the first direction; A plug-in sleeve is disposed inside a fixed sleeve, and the plug-in sleeve and the fixed sleeve are movably arranged along the first direction, and the plug-in sleeve and the fixed sleeve can rotate relative to each other about the axial direction of the fixed sleeve; a second limiting structure is provided on the plug-in sleeve, and the second limiting structure is used to cooperate with the first limiting structure so that the fiber optic connector assembly and the positioning member can be aligned along the first direction. The plug core is fixed inside the plug sleeve and can be inserted into the plug hole. The plug core is used to assemble optical fibers.

[0006] In one possible implementation, a movable sleeve and an elastic element are also included. The movable sleeve is disposed inside the insertion sleeve, and the two ends of the elastic element abut against the movable sleeve and the insertion sleeve, respectively, so that the movable sleeve and the insertion sleeve can move relative to each other along the first direction, and the insertion core is fixed on the movable sleeve.

[0007] In one possible implementation, a connecting tube is provided on the side of the insert sleeve away from the insert hole, and the elastic element is sleeved on the movable sleeve, with the elastic element abutting against the end walls of the movable sleeve and the connecting tube respectively.

[0008] In one possible implementation, the outer wall of the insertion sleeve is provided with a first external protruding ring, and the inner wall of the fixing sleeve is provided with an internal protruding ring. The internal protruding ring and the first external protruding ring abut against each other along the first direction, and the first external protruding ring is positioned close to the insertion hole relative to the internal protruding ring.

[0009] In one possible implementation, an adjusting sleeve is further included, which is disposed inside the connecting pipe and rotatably connected to the connecting pipe. The adjusting sleeve is located at the end of the movable sleeve away from the insertion hole. The adjusting sleeve and the movable sleeve have a gap along the first direction, and the adjusting sleeve and the movable sleeve can rotate synchronously about the axial direction of the movable sleeve. Both the adjusting sleeve and the movable sleeve are used to allow the optical fiber to pass through.

[0010] In one possible implementation, the adjusting sleeve has an adjusting section whose outer wall cross-sectional shape is non-circular.

[0011] In one possible implementation, a connecting sleeve is further included, which is detachably connected to the connecting pipe along the first direction. The connecting sleeve is used to connect the armored pipe, and the connecting sleeve is provided with a second outer convex ring, with an inner convex ring located between the first outer convex ring and the second outer convex ring.

[0012] In one possible implementation, an outer cylinder is fitted onto the side of the plug core facing the plug hole, and the outer cylinder is sized to match the plug hole.

[0013] In one possible implementation, the outer peripheral wall of the connecting pipe has a first thread, the inner wall of the insertion sleeve has a second thread, and the inner wall of the connecting sleeve has a third thread. The second thread and the third thread are respectively screwed into different thread segments of the first thread, so that both the insertion sleeve and the connecting sleeve are connected to the connecting pipe.

[0014] This application also discloses a connector system, including: A positioning component, wherein a first end of the positioning component is used for fixed connection with the main structure, the first end has a light-transmitting hole, the second end of the positioning component has an insertion hole along a first direction, the insertion hole communicates with the light-transmitting hole, and a first limiting structure is provided on the positioning component; As described in any of the preceding fiber optic connector assemblies, the retaining sleeve is used for detachable connection with the positioning member along the first direction.

[0015] In one possible implementation, the inner wall of the retaining sleeve of the fiber optic connector assembly has a fourth thread, and the circumferential outer wall of the positioning member has a fifth thread, the fourth thread and the fifth thread engaging with each other to connect the retaining sleeve to the positioning member.

[0016] In one possible implementation, the insertion hole has a guide portion at one end near the fiber optic connector assembly, and the diameter of the guide portion gradually decreases from the end near the fiber optic connector assembly to the end near the light-transmitting hole.

[0017] In one possible implementation, the end of the light-transmitting hole near the main structure has an enlarged diameter portion, and the diameter of the enlarged diameter portion gradually decreases from the end near the main structure to the end near the insertion hole.

[0018] Compared with the prior art, the beneficial effects of this application are as follows: In the fiber optic connector assembly and connector system provided in this application, the positioning element serves as the mating reference for the connector assembly. Through the insertion hole arranged along the first direction, it provides an insertion channel for the insertion core. The positioning element is provided with a first limiting structure. The fixed sleeve is detachably connected to the positioning element along the first direction, providing installation and movement space for the internal insertion sleeve. The insertion sleeve is nested inside the fixed sleeve and can move relative to the fixed sleeve along the first direction, allowing the insertion sleeve to be exposed for easy insertion during the insertion process. Then, the fixed sleeve is adjusted to the positioning element assembly position, and the insertion sleeve can rotate relative to the fixed sleeve axially to achieve circumferential angle adjustment. The second limiting structure on the insertion sleeve cooperates with the first limiting structure of the positioning element, locking the relative position of the connector assembly and the positioning element in an aligned state along the first direction. Structurally, this prevents core misalignment. The insertion core, as the component directly carrying optical fiber and optical signal transmission, is fixed inside the insertion sleeve, ensuring the synchronization of adjustment and execution actions.

[0019] In this way, by first fixing the positioning component to the main structure, and then cooperating with the first positioning structure of the positioning component through the second limiting structure on the plug sleeve, precise alignment between the plug sleeve and the positioning component can be easily achieved. This ensures that during insertion and operation, the core remains precisely aligned with the plug hole along the first direction. This design avoids damage to components caused by misalignment when the fiber optic connector assembly is directly connected to the main structure. Furthermore, by simply positioning the initial position of the positioning component, the plug sleeve can be adjusted according to the actual position of the plug hole of the positioning component, thanks to its circumferential rotation and axial movement freedom. This reduces the skill requirements for operators, avoids jamming, and effectively improves the efficiency and convenience of insertion operations. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the connector system provided in an embodiment of the present invention; Figure 2 A cross-sectional view of a connector system provided in an embodiment of the present invention; Figure 3 An exploded view of the connector system provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the first limiting structure and the second limiting structure of the connector system provided in an embodiment of the present invention; Figure 5 This is a partial structural schematic diagram of the fiber optic connector assembly provided in an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures: 10-Positioning component; 11-First end; 111-Through hole; 1111-Expanded diameter section; 12-Second end; 121-Insertion hole; 1211-Guide section; 13-Fifth thread; 20 - Fiber optic connector assembly; 21 - Fixed sleeve; 211 - Inner convex ring; 212 - Fourth thread; 22 - Insert sleeve; 221 - First outer convex ring; 222 - Second thread; 23 - Insert core; 231 - Outer cylinder; 24 - Movable sleeve; 241 - Protrusion; 25 - Connecting tube; 251 - First thread; 26 - Adjusting sleeve; 261 - Gap; 262 - Adjusting section; 263 - Groove; 30 - Elastic element; 41 - First limiting structure; 42 - Second limiting structure; 50 - Connecting sleeve; 51 - Second outer convex ring; 52 - Third thread. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] In this application, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0026] In the information age, optical fiber communication, with its outstanding advantages such as high bandwidth, low loss, and strong anti-interference capability, has become a core technology carrier supporting key areas such as 5G communication, data center interconnection, industrial internet, and long-distance trunk transmission. As a key passive device enabling detachable and reusable connections between optical fibers, the reliability of optical fiber connectors directly determines the stability and efficiency of optical signal transmission, making them an indispensable basic component of optical fiber communication systems.

[0027] In existing technologies, fiber optic connectors typically rely on a plug-in / plug-out structure to perform insertion and disconnection operations. However, this type of structure has significant shortcomings in practical applications. Core alignment is prone to errors, leading to a decrease in overall connection performance and making it difficult to meet the stringent requirements for insertion loss stability in high-speed signal transmission. Moreover, manual insertion is prone to jamming, which not only significantly increases the difficulty of operation but may also cause scratches on the fiber end face or breakage of the fiber core due to forced insertion and removal by the operator, thereby shortening the connector's lifespan.

[0028] In view of this, some embodiments of this application provide an optical fiber connector assembly and connector system that can lock the relative position of the connector assembly and the positioning element in an aligned state along a first direction, structurally avoiding core offset.

[0029] The present application will be described in detail below through specific embodiments: The fiber optic connector assembly 20 of this application embodiment, such as Figures 1 to 5 As shown, an optical fiber connector assembly 20 is detachably connected to a positioning member 10. The positioning member 10 has a insertion hole 121 along a first direction and a first limiting structure 41 is provided on the positioning member 10. The optical fiber connector assembly 20 includes: Fixed sleeve 21 is used for detachable connection with positioning member 10 along a first direction; The insertion sleeve 22 is disposed inside the fixed sleeve 21. The insertion sleeve 22 and the fixed sleeve 21 are movably disposed along the first direction, and the insertion sleeve 22 and the fixed sleeve 21 can rotate relative to each other about the axial direction of the fixed sleeve 21. The insertion sleeve 22 is provided with a second limiting structure 42, which is used to cooperate with the first limiting structure 41 so that the fiber optic connector assembly 20 and the positioning member 10 can be aligned along the first direction. The insertion core 23 is fixed inside the insertion sleeve 22 and can be inserted into the insertion hole 121. The insertion core 23 is used to assemble optical fibers.

[0030] In the fiber optic connector assembly 20 provided in this embodiment, the positioning member 10 serves as the mating reference for the connector assembly. Through the insertion hole 121 arranged along the first direction, it provides an insertion channel for the insertion core 23. The positioning member 10 is provided with a first limiting structure 41. The fixed sleeve 21 is detachably connected to the positioning member 10 along the first direction, providing installation and movement space for the internal insertion sleeve 22. The insertion sleeve 22 is nested inside the fixed sleeve 21 and can move relative to the fixed sleeve 21 along the first direction, allowing the insertion sleeve 22 to be exposed during insertion. After insertion, the fixed sleeve 21 is adjusted to the assembly position of the positioning member 10. The insertion sleeve 22 can rotate relative to the fixed sleeve 21 axially to achieve circumferential angle adjustment. The second limiting structure 42 on the insertion sleeve 22 cooperates with the first limiting structure 41 of the positioning member 10 to lock the relative position of the connector assembly and the positioning member 10 in an aligned state along the first direction, thus structurally preventing core offset. The insertion core 23, as the component that directly carries the optical fiber and optical signal transmission, is fixed inside the insertion sleeve 22 to ensure the synchronization of the adjustment action and the execution action.

[0031] In this way, by first fixing the positioning component 10 to the main structure, and then cooperating with the first limiting structure 41 of the positioning component 10 through the second limiting structure 42 on the insertion sleeve 22, the precise alignment of the insertion sleeve 22 and the positioning component 10 can be easily achieved, ensuring that the core body always maintains precise alignment with the insertion hole 121 along the first direction during insertion and operation. This design can avoid damage to components due to misalignment when the fiber optic connector assembly 20 is directly connected to the main structure; at the same time, only the initial position of the positioning component 10 needs to be positioned, and the insertion sleeve 22 can be adjusted according to the actual position of the insertion hole 121 of the positioning component 10 by virtue of its own circumferential rotation and axial movement freedom. This reduces the skill requirements of the operator and avoids jamming, effectively improving the efficiency and convenience of the insertion operation.

[0032] Among them, such as Figure 4 As shown, one of the first limiting structure 41 and the second limiting structure 42 is a limiting groove, and the other is a limiting block. In the figure, the X direction is the first direction.

[0033] In some embodiments, such as Figure 2 and Figure 3 As shown, the fiber optic connector assembly 20 also includes a movable sleeve 24 and an elastic element 30. The movable sleeve 24 is disposed inside the insertion sleeve 22. The two ends of the elastic element 30 abut against the movable sleeve 24 and the insertion sleeve 22 respectively, thereby achieving a limit in the X direction (axial direction) and enabling the movable sleeve 24 and the insertion sleeve 22 to move relative to each other in the first direction. The insertion core 23 is fixed on the movable sleeve 24.

[0034] During the insertion process, axial impact forces can easily cause fiber end face collisions and core pressure damage, especially in scenarios where manual operation force is not properly controlled, increasing the risk of damage. The buffer system composed of the elastic element 30 and the movable sleeve 24, when the inserted core 23 contacts the insertion hole 121 of the positioning element 10, if the axial force is too large, the movable sleeve 24 will compress the elastic element 30 to produce a yielding effect. Through elastic deformation, the rigid impact force is converted into elastic potential energy, avoiding hard contact between the core and the insertion hole 121 and eliminating the risk of end face scratches caused by fluctuations in operating force. After insertion, the elastic element 30 always maintains a certain preload, so that the core and the insertion hole 121 form an elastically compressed state. This state can effectively absorb external interference such as vibration and impact, avoid the generation of contact gap 261, and improve transmission stability.

[0035] In some embodiments, such as Figure 2 and Figure 3As shown, a connecting tube 25 is provided on the side of the insert sleeve 22 away from the insert hole 121. In some embodiments, the radius of the outer periphery of the connecting tube 25 is larger than the radius of the outer periphery of the movable sleeve 24, and the radius of the outer periphery of the movable sleeve 24 is larger than the radius of the outer periphery of the insert core 23. Thus, the connecting tube 25, the movable sleeve 24, and the insert core 23 together form a structure with a reduced outer diameter, which can be fitted into the insert sleeve 22 and the first outer protruding ring 221. An elastic member 30 is sleeved on the movable sleeve 24, and the elastic member 30 abuts against the end walls of the movable sleeve 24 and the connecting tube 25 respectively.

[0036] The two ends of the elastic element 30 abut against the connecting pipe 25 and the insertion sleeve 22 respectively, thereby achieving radial limiting.

[0037] The connecting tube 25 provides a stable installation reference and lateral constraint for the elastic element 30, restricting its radial displacement, preventing the elastic element 30 from being squeezed and deflected, ensuring that the elastic element 30 deforms only in the first direction, ensuring that the deformation is only axial compression and tension, without generating additional stress, and avoiding buffer failure caused by the offset of the elastic element 30. During manual insertion operation, due to the limiting effect of the connecting tube 25 on the elastic element 30, the impact force will not be converted into lateral force, and the tilting of the movable sleeve 24 will prevent the core from misaligning and colliding with the insertion hole 121.

[0038] In some embodiments, such as Figure 2 As shown, the outer wall of the insertion sleeve 22 is provided with a first externally protruding ring 221. The radius of the outer periphery of the first externally protruding ring 221 is larger than the radius of the outer periphery of both ends of the first externally protruding ring 221 along the first direction, so as to limit the positioning of the fixed sleeve 21. In some embodiments, the radius of the outer periphery of the end of the first externally protruding ring 221 away from the positioning member 10 is larger than the radius of the outer periphery of the first externally protruding ring 221 near the positioning member 10. In some embodiments, the radius of the outer periphery of the first externally protruding ring 221 is larger than the radius of the outer periphery of the end of the first externally protruding ring 221 near the positioning member 10. In some embodiments, the two can also be flush. The inner wall of the fixed sleeve 21 is provided with an innerly protruding ring 211. The radius of the inner periphery of the innerly protruding ring 211 is smaller than the radius of the inner periphery of the fixed sleeve 21. The radius of the inner periphery of the innerly protruding ring 211 matches the radius of the outer periphery of the end of the first externally protruding ring 221 away from the positioning member 10. The radius of the outer periphery of the first outer convex ring 221 is larger than the radius of the inner periphery of the inner convex ring 211. This provides space for the threaded knob. The first outer convex ring 221 is positioned close to the insertion hole 121 relative to the inner convex ring 211, and the inner convex ring 211 abuts against the first outer convex ring 221 in a first direction, thereby achieving a limiting effect in the first direction.

[0039] The axial positioning of the insert sleeve 22 and the fixed sleeve 21 is prone to failure due to vibration and insertion / removal impacts, which could cause the insert sleeve 22 to detach from the fixed sleeve 21. The rigid contact between the first outer convex ring 221 and the inner convex ring 211 forms a mechanical locking limit. When the insert sleeve 22 is subjected to unexpected tension or vibration and tends to move away from the insertion hole 121, the first outer convex ring 221 will be firmly blocked by the inner convex ring 211, preventing axial displacement and avoiding the risk of the insert sleeve 22 detaching axially. When the component is inserted into the positioning member 10, the insert sleeve 22 can drive the core to move closer to the insertion hole 121 until alignment and insertion are completed. When subjected to reverse force, the contact between the inner convex ring 211 and the first outer convex ring 221 limits its maximum retraction distance, ensuring that the initial axial position of the insert sleeve 22 is consistent each time it is inserted. That is, the combination of the inner convex ring 211 and the first outer convex ring 221 not only achieves the limiting function, but also achieves the effect of setting the maximum retraction distance in advance.

[0040] In some embodiments, such as Figure 2 and Figure 5 As shown, the fiber optic connector assembly 20 also includes an adjusting sleeve 26, which is disposed inside the connecting tube 25 and rotatably connected to the connecting tube 25. The adjusting sleeve 26 is located at the end of the movable sleeve 24 away from the insertion hole 121. The adjusting sleeve 26 and the movable sleeve 24 have a gap 261 along the first direction, and the adjusting sleeve 26 and the movable sleeve 24 can rotate synchronously around the axial direction of the movable sleeve 24. Both the adjusting sleeve 26 and the movable sleeve 24 are used to allow optical fibers to pass through.

[0041] The movable sleeve 24 has a protrusion 241 facing the adjusting sleeve 26, and the adjusting sleeve 26 has a groove 263 that matches the protrusion 241. There is a gap 261 between the protrusion 241 and the groove 263. The protrusion 241 and the groove 263 can achieve the foolproof effect of the adjusting sleeve 26 and the movable sleeve 24.

[0042] The adjusting sleeve 26 is nested inside the connecting tube 25 and only forms a rotational connection with the connecting tube 25, without generating axial relative displacement. Simultaneously, the adjusting sleeve 26 is positioned at the end of the movable sleeve 24 away from the insertion hole 121, and the two maintain a preset gap 261 along the first direction. This ensures that the axial elastic adjustment of the movable sleeve 24 is not affected, while also achieving synchronous rotation. Both the adjusting sleeve 26 and the movable sleeve 24 have a hollow structure, forming a through optical fiber channel inside. This ensures that the optical fiber can pass through one end of the adjusting sleeve 26, sequentially through the movable sleeve 24 and the insertion core 23 to complete optical signal transmission. When it is necessary to adjust the circumferential position of the movable sleeve 24 to achieve precise core alignment, the operator can rotate the adjusting sleeve 26, which, through the circumferential synchronization structure, drives the movable sleeve 24 to rotate synchronously, completing the circumferential alignment.

[0043] In some embodiments, such as Figure 5As shown, the adjusting sleeve 26 has an adjusting section 262, and the outer wall cross-sectional shape of the adjusting section 262 is non-circular.

[0044] The non-circular cross section, through multiple edges or irregular structures (such as, but not limited to, forming multiple sets of grooves on the outer wall of the adjustment section 262), significantly increases the contact friction between the hand and the adjustment section 262 and the number of force points, ensuring stable force transmission during rotation operation, avoiding adjustment errors caused by slippage, and improving operational safety.

[0045] The adjustment section 262 can be square, hexagonal, or have planar structures cut on both sides of the circle for easy hand-holding. This application does not limit this.

[0046] In some embodiments, such as Figure 2 As shown, the fiber optic connector assembly 20 also includes a connecting sleeve 50, which is detachably connected to the connecting tube 25 along a first direction. The connecting sleeve 50 is used to connect the armor tube, and the connecting sleeve 50 is provided with a second outer protruding ring 51, and an inner protruding ring 211 is located between the first outer protruding ring 221 and the second outer protruding ring 51.

[0047] The radius of the outer periphery of the second outer convex ring 51 is greater than the radius of the outer periphery of both ends of the connecting sleeve 50 along the first direction. The radius of the outer periphery of the second outer convex ring 51 is greater than the radius of the inner periphery of the inner convex ring 211. That is, the combination of the inner convex ring 211 and the second outer convex ring 51 achieves a limiting function, allowing the inner convex ring 211 to move between the first outer convex ring 221 and the second outer convex ring 51.

[0048] As the external protective structure of optical fiber, the reliability of the connection between the armor tube and the connector directly affects the anti-interference and anti-damage capabilities of the optical fiber. The connecting sleeve 50 is specially designed for armor tube connection. Through the interface structure adapted to the inner diameter of the armor tube, it realizes the rigid docking between the armor tube and the component. At the same time, the detachable connection method makes it easy to replace the matching connecting sleeve 50 according to the armor tube specifications.

[0049] In environments involving insertion, removal, and vibration, axial movement of components can easily lead to misalignment of the core or loosening of connections. The inner convex ring 211 limits the first outer convex ring 221 towards the armor tube, preventing the insertion sleeve 22 from moving away from the insertion hole 121. Simultaneously, the inner convex ring 211 limits the second outer convex ring 51 away from the armor tube, restricting the movement of the connecting sleeve 50 towards the insertion hole 121. This bidirectional limiting control of the axial displacement of the insertion sleeve 22 and the connecting sleeve 50 completely eliminates component movement, ensuring the core remains in precise alignment at all times.

[0050] In some embodiments, such as Figure 5As shown, an outer cylinder 231 is fitted onto the side of the insertion core 23 facing the insertion hole 121, and the outer cylinder 231 matches the size of the insertion hole 121. Specifically, the radius of the outer periphery of the outer cylinder 231 matches the diameter of the insertion hole 121, and the inner diameter of the outer cylinder 231 matches the outer diameter of the insertion core 23.

[0051] The end face of the connector core 23 and the fiber core are the core areas for optical signal transmission, and are easily damaged by collisions, friction, or foreign matter. The outer shell 231, as a protective cover for the core, is always positioned between the core and the connector hole 121 during the insertion and separation process, effectively preventing external dust and impurities from directly contacting the end face of the core. At the same time, if a slight alignment deviation occurs, the outer shell 231 can withstand most of the impact force, avoiding direct force on the core that could cause end face scratches or fiber core breakage, thus improving the core's impact resistance.

[0052] In some embodiments, such as Figure 2 and Figure 3 As shown, the outer peripheral wall of the connecting pipe 25 has a first thread 251, the inner wall of the insertion sleeve 22 has a second thread 222, and the inner wall of the connecting sleeve 50 has a third thread 52. The second thread 222 and the third thread 52 are respectively screwed into different thread segments of the first thread 251 so that the insertion sleeve 22 and the connecting sleeve 50 are both connected to the connecting pipe 25.

[0053] The connecting tube 25 serves as the connection reference. The insertion sleeve 22 and the connecting sleeve 50 can be independently screwed into the preset threaded section of the connecting tube 25 through their respective threads, without the need for additional fasteners. During assembly, it is only necessary to tighten them in the direction of thread engagement to complete the fixation. The different threaded sections of the first thread 251 provide a clear axial positioning reference for the insertion sleeve 22 and the connecting sleeve 50. By controlling the spacing and pitch of the threaded sections, the axial installation error of the two can be controlled, ensuring the relative position stability of the core and the insertion hole 121.

[0054] This application also discloses a connector system, such as... Figure 2 and Figure 3 As shown, it includes: Positioning component 10, the first end 11 of positioning component 10 is used for fixed connection with the main structure, the first end 11 has a light-transmitting hole 111, the second end 12 of positioning component 10 has an insertion hole 121 along the first direction, the insertion hole 121 communicates with the light-transmitting hole 111, and a first limiting structure 41 is provided on positioning component 10. The fiber optic connector assembly 20 has a retaining sleeve 21 for detachable connection with the positioning member 10 along a first direction.

[0055] The fiber optic connector assembly 20 in this connector system is the fiber optic connector assembly 20 described above. Therefore, the connector system in this embodiment has roughly the same technical effect as the fiber optic connector assembly 20 described above. Since the technical effect of the fiber optic connector assembly 20 has been fully explained, it will not be repeated here.

[0056] It should be explained that the main structure connected to the positioning component 10 can be an interface component of a network or terminal device, a fiber optic junction box, a fiber distribution box, or an optical transmission link component, etc.

[0057] In some embodiments, such as Figures 2 to 4 As shown, the inner wall of the fixing sleeve 21 of the fiber optic connector assembly 20 has a fourth thread 212, and the outer wall of the positioning member 10 has a fifth thread 13. The fourth thread 212 and the fifth thread 13 are screwed together to connect the fixing sleeve 21 to the positioning member 10.

[0058] The threaded locking structure provides a continuous and stable preload, ensuring a tight fit between the fixed sleeve 21 and the positioning element 10, controlling axial movement. Simultaneously, the self-locking characteristic of the thread effectively resists external interference such as vibration and impact, preventing loosening even in high-frequency vibration environments of industrial equipment. This ensures precise alignment of the core and the light-transmitting hole 111 of the positioning element 10, improving the stability of optical signal transmission. The threaded connection requires no special disassembly tools; operators can easily separate the fixed sleeve 21 from the positioning element 10 by manually tightening the screw.

[0059] In some embodiments, such as Figure 2 As shown, the end of the insertion hole 121 near the fiber optic connector assembly 20 has a guide portion 1211, and the diameter of the guide portion 1211 gradually decreases from the end of the guide portion 1211 near the fiber optic connector assembly 20 to the end near the light transmission hole 111.

[0060] Thus, the tapered structure formed by the guide part 1211 has a slight radial offset in the fiber optic connector assembly 20, and the outer cylinder 231 or the plug core 23 at the end of the assembly can be quickly received by the tapered guide surface and automatically corrected along the guide surface to guide the core to accurately enter the plug hole 121, greatly improving the installation efficiency.

[0061] In some embodiments, such as Figure 2 As shown, the end of the light-transmitting hole 111 near the main structure has an enlarged diameter portion 1111. The diameter of the enlarged diameter portion 1111 gradually decreases from the end near the main structure to the end near the insertion hole 121.

[0062] The alignment accuracy between the transmission optical fiber inside the main structure and the light-passing hole 111 of the positioning component 10 directly affects the optical signal coupling efficiency. After the end of the optical fiber extending from the main structure enters the expansion section 1111, the tapered surface will initially converge the diverging optical signal, guiding the optical signal to be accurately projected onto the reference channel in the middle section of the light-passing hole 111, and then efficiently coupled with the signal transmitted from the insertion core 23. At the same time, the tapered transition can reduce the number of reflections of the optical signal on the inner wall of the light-passing hole 111, reduce the optical signal transmission loss, and meet the low-loss requirements of high-speed optical transmission.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fiber optic connector assembly (20) for detachable connection with a positioning member (10), the positioning member (10) having a insertion hole (121) along a first direction, the positioning member (10) being provided with a first limiting structure (41), characterized in that, The fiber optic connector assembly (20) includes: A fixing sleeve (21) is used to detachably connect with the positioning member (10) along the first direction; A plug-in sleeve (22) is disposed inside the fixed sleeve (21). The plug-in sleeve (22) and the fixed sleeve (21) are movably disposed along the first direction, and the plug-in sleeve (22) and the fixed sleeve (21) can rotate relative to each other around the axial direction of the fixed sleeve (21). A second limiting structure (42) is provided on the plug-in sleeve (22). The second limiting structure (42) is used to cooperate with the first limiting structure (41) so that the fiber optic connector assembly (20) and the positioning member (10) can be aligned along the first direction. The plug core (23) is fixed inside the plug sleeve (22). The plug core (23) can be inserted into the plug hole (121). The plug core (23) is used to assemble optical fibers.

2. The fiber optic connector assembly (20) according to claim 1, characterized in that, It also includes a movable sleeve (24) and an elastic element (30). The movable sleeve (24) is disposed inside the insertion sleeve (22). The two ends of the elastic element (30) abut against the movable sleeve (24) and the insertion sleeve (22) respectively, so that the movable sleeve (24) and the insertion sleeve (22) can move relative to each other in the first direction. The insertion core (23) is fixed on the movable sleeve (24).

3. The fiber optic connector assembly (20) according to claim 2, characterized in that, The insertion sleeve (22) has a connecting tube (25) on the side away from the insertion hole (121), and the elastic element (30) is sleeved on the movable sleeve (24). The elastic element (30) abuts against the end walls of the movable sleeve (24) and the connecting tube (25) respectively.

4. The fiber optic connector assembly (20) according to claim 3, characterized in that, The outer wall of the insertion sleeve (22) is provided with a first outer protruding ring (221), and the inner wall of the fixing sleeve (21) is provided with an inner protruding ring (211). The inner protruding ring (211) abuts against the first outer protruding ring (221) along the first direction, and the first outer protruding ring (221) is positioned close to the insertion hole (121) relative to the inner protruding ring (211).

5. The fiber optic connector assembly (20) according to claim 4, characterized in that, It also includes an adjusting sleeve (26), which is disposed inside the connecting pipe (25) and rotatably connected to the connecting pipe (25). The adjusting sleeve (26) is disposed at the end of the movable sleeve (24) away from the insertion hole (121). The adjusting sleeve (26) and the movable sleeve (24) have a gap (261) along the first direction, and the adjusting sleeve (26) and the movable sleeve (24) can rotate synchronously around the axial direction of the movable sleeve (24). Both the adjusting sleeve (26) and the movable sleeve (24) are used to allow the optical fiber to pass through.

6. The fiber optic connector assembly (20) according to claim 5, characterized in that, The adjusting sleeve (26) has an adjusting section (262), the outer wall cross-section of which is non-circular.

7. The fiber optic connector assembly (20) according to claim 6, characterized in that, It also includes a connecting sleeve (50), which is detachably connected to the connecting pipe (25) along the first direction. The connecting sleeve (50) is used to connect the armored pipe. The connecting sleeve (50) is provided with a second outer protruding ring (51), and the inner protruding ring (211) is located between the first outer protruding ring (221) and the second outer protruding ring (51).

8. The fiber optic connector assembly (20) according to any one of claims 1-7, characterized in that, The plug core (23) is fitted with an outer cylinder (231) on the side facing the plug hole (121), and the outer cylinder (231) matches the size of the plug hole (121).

9. The fiber optic connector assembly (20) according to claim 8, characterized in that, The outer peripheral wall of the connecting pipe (25) has a first thread (251), the inner wall of the insertion sleeve (22) has a second thread (222), and the inner wall of the connecting sleeve (50) has a third thread (52). The second thread (222) and the third thread (52) are respectively screwed into different thread segments of the first thread (251) so that the insertion sleeve (22) and the connecting sleeve (50) are both connected to the connecting pipe (25).

10. A connector system, characterized in that, include: Positioning component (10), the first end (11) of the positioning component (10) is used to be fixedly connected to the main structure, the first end (11) has a light-transmitting hole (111), the second end (12) of the positioning component (10) has a plug-in hole (121) along the first direction, the plug-in hole (121) is connected to the light-transmitting hole (111), and the positioning component (10) is provided with a first limiting structure (41). In the fiber optic connector assembly (20) as described in any one of claims 1-9, the retaining sleeve (21) is detachably connected to the positioning member (10) along the first direction.

11. The connector system according to claim 10, characterized in that, The inner wall of the fixing sleeve (21) of the fiber optic connector assembly (20) has a fourth thread (212), and the outer wall of the positioning member (10) has a fifth thread (13). The fourth thread (212) and the fifth thread (13) are screwed together to connect the fixing sleeve (21) to the positioning member (10).

12. The connector system according to claim 10, characterized in that, The insertion hole (121) has a guide portion at one end near the fiber optic connector assembly (20), and the diameter of the guide portion gradually decreases from one end near the fiber optic connector assembly (20) to the end near the light-transmitting hole (111).

13. The connector system according to claim 10, characterized in that, The light-transmitting hole (111) has an enlarged diameter section at one end near the main structure. The diameter of the enlarged diameter section gradually decreases from one end near the main structure to the end near the insertion hole (121).

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