An optical fiber connector

Abstract

The utility model discloses a kind of optical fiber connectors, including quick assembly component, waterproof assembly and shell assembly;Shell assembly includes the main casing with inner cavity and tail cover, quick assembly component is set in inner cavity, waterproof assembly is set in the one end of inner cavity away from quick assembly component, tail cover is set in one end of main casing, and cover is set in the circumferential side of waterproof assembly;Waterproof assembly includes sealing plug outer sleeve, sealing plug, sealing ring and optical cable guide piece, sealing plug has first optical cable passage, for optical cable to pass through and connect with quick assembly component, one end of sealing plug outer sleeve is assembled in inner cavity, and sealing ring is arranged between sealing plug outer sleeve and the inner wall of inner cavity, sealing plug is located in sealing plug outer sleeve, and one end of optical cable guide piece and tail cover abut, to embed with the other end of sealing plug outer sleeve and press sealing plug, optical cable guide piece has second optical cable passage with first optical cable passage communication.The utility model has realized the waterproof dustproof function of optical fiber connector.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber connection technology, and in particular to an optical fiber connector. Background Technology

[0002] As a passive device, fiber optic connectors are designed to quickly connect different optical fibers in the field to achieve efficient optical signal transmission, playing a crucial role in the field of optical communication. With the rapid development of fiber optic communication technology, key performance indicators of fiber optic connectors, such as insertion loss and return loss, have been significantly optimized. However, current technical solutions mainly focus on improving the stability of these optical parameters, lacking systematic design considerations for the durability of fiber optic connectors in complex environments, particularly in terms of waterproof and dustproof performance.

[0003] This limitation significantly shortens the lifespan of fiber optic connectors in harsh environments, severely restricting their large-scale application in emerging fields. Traditional fiber optic connectors typically connect to an adapter at one end and a fiber optic cable at the other, protected by a housing, usually using a sealing ring for sealing. However, this method's sealing performance is not ideal. Utility Model Content

[0004] The technical problem to be solved by this invention is that existing fiber optic connectors usually use sealing rings for sealing, which have poor sealing effect.

[0005] To solve the above-mentioned technical problems, this utility model provides an optical fiber connector, including a quick-connect assembly, a waterproof assembly, and a housing assembly;

[0006] The housing assembly includes a main housing with an inner cavity and a tail sleeve with perforations. The quick-connect assembly is disposed in the inner cavity, and the waterproof assembly is disposed at the end of the inner cavity away from the quick-connect assembly. The tail sleeve is fitted onto one end of the main housing and covers the periphery of the waterproof assembly so that the waterproof assembly is not exposed to the housing assembly.

[0007] The waterproof component includes a sealing plug outer sleeve, a sealing plug, a sealing ring, and an optical cable guide. The sealing plug has a first optical cable channel for the optical fiber of an external optical cable to pass through and connect to the quick-connect component. One end of the sealing plug outer sleeve is fitted into the inner cavity, and the sealing ring is disposed between the sealing plug outer sleeve and the inner wall of the inner cavity. The sealing plug is disposed inside the sealing plug outer sleeve, and one end of the optical cable guide abuts against the tail sleeve to fit and press against the sealing plug with the other end of the sealing plug outer sleeve. The optical cable guide has a second optical cable channel communicating with the first optical cable channel.

[0008] Furthermore, the optical cable guide includes a base, a clamping cantilever with a mounting groove, a fitting block, and an optical cable mating insert. Multiple fitting blocks are spaced apart on the outer side wall of the base around its axis. The outer side wall of the sealing plug sleeve has multiple fitting grooves adapted to the fitting blocks. The base has a second optical cable channel extending through both ends. The clamping cantilever is connected to the base and extends along the axial direction of the second optical cable channel to form a clamping space communicating with the second optical cable channel. The insertion side of the optical cable mating insert is inserted into the mounting groove, such that the clamping sides of two optical cable mating inserts are positioned opposite each other in the clamping space.

[0009] Furthermore, the quick-connect assembly includes a quick-connect body with a receiving cavity and a ferrule assembly, the ferrule assembly being disposed in the receiving cavity and the ferrule in the ferrule assembly protruding from an opening in the quick-connect body away from the waterproof component.

[0010] Furthermore, the quick-connect assembly also includes an optical cable clamp and a rear cover. The quick-connect body has a mounting portion at one end near the waterproof assembly. The optical cable clamp is disposed in the mounting portion. The rear cover is rotatably connected to the quick-connect body and covers the mounting portion.

[0011] Furthermore, the optical cable clamp includes a cover, a clamping groove, and a locking nut. The cover is fastened to the clamping groove and seals the opening of the clamping groove to form a third optical cable channel for the installation of the external optical cable. The outer wall of the clamping groove is provided with threads, and the locking nut is locked to the clamping groove through the threads.

[0012] Furthermore, the quick-connect assembly also includes a movable guide rail, the mounting portion is provided with a guide groove, the movable guide rail is detachably installed in the guide groove, and the movable guide rail can move axially along the guide groove, and the optical cable clamp is installed on the movable guide rail.

[0013] Furthermore, the movable guide rail is provided with a first protrusion, and the optical cable clamp is provided with a first recess that matches the first protrusion; and / or

[0014] The moving guide rail is provided with a second recess, and the optical cable clamp is provided with a second protrusion that matches the second recess.

[0015] Furthermore, the movable guide rail has a guide rail body and a cantilever buckle. The guide rail body has a through hole groove. The cantilever buckle is connected to the guide rail body and is located in the through hole groove. The quick-connect body has a locking hole. The cantilever buckle and the locking hole are connected in cooperation.

[0016] Furthermore, the outer casing assembly also includes a connecting sleeve, wherein the outer periphery of the main casing away from the tail sleeve is provided with an annular flange, the connecting sleeve is sleeved on the outer periphery of the main casing, and the outer periphery of the connecting sleeve away from the tail sleeve abuts against the annular flange.

[0017] Furthermore, the outer casing assembly also includes a dust cap with an opening, and a protrusion on the connecting sleeve. The dust cap is fitted onto the outer periphery of the connecting sleeve, and the protrusion engages with the opening to seal the opening at the end of the main casing away from the tail sleeve.

[0018] Compared with the prior art, the fiber optic connector of this utility model has the following advantages:

[0019] This utility model embodiment can not only smoothly extend the optical fiber of the external optical cable into the quick-connect assembly, but also seal the quick-connect assembly through the waterproof assembly, the outer shell assembly and the adapter after the optical fiber connector and the adapter are plugged in, so as to realize the waterproof and dustproof function of the optical fiber connector, and effectively improve the working stability and service life of the optical fiber connector in complex environments. Attached Figure Description

[0020] The present application will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are intended only to conceptually represent the composition or structure of the described objects and may contain exaggerated representations, and the drawings are not necessarily drawn to scale.

[0021] Figure 1 This is a schematic diagram of the structure of the optical fiber connector provided in this embodiment of the utility model;

[0022] Figure 2 This is a front view of the fiber optic connector provided in this embodiment of the utility model;

[0023] Figure 3 This is provided along with the embodiments of the present utility model. Figure 2 A sectional view;

[0024] Figure 4 This is a partial exploded view of the optical fiber connector provided in this embodiment of the present invention;

[0025] Figure 5 This is another partial exploded view of the fiber optic connector provided in this embodiment of the present invention;

[0026] Figure 6 This is an exploded view of the waterproof component provided in this embodiment of the utility model;

[0027] Figure 7 This is an exploded view of the quick-connect assembly provided in this embodiment of the utility model;

[0028] Figure 8 This is a schematic diagram of the quick-connect assembly provided in this embodiment of the present invention, excluding the back cover.

[0029] In the diagram, 1. Quick-connect assembly; 11. Quick-connect body; 111. Receiving cavity; 112. Mounting part; 113. Locking hole; 12. Plug assembly; 121. Plug; 122. Plug cap; 13. Optical cable clamp; 131. Cover; 132. Clamping groove; 1321. Thread; 133. Locking nut; 134. First recess; 14. Rear cover; 15. Moving guide rail; 151. First protrusion; 152. Second recess; 153. Guide rail body; 1531. Through-hole groove; 154. Cantilever buckle;

[0030] 2. Waterproof components; 21. Sealing plug outer sleeve; 211. Fitting groove; 22. Sealing plug; 221. First optical cable channel; 23. Sealing ring; 24. Optical cable guide; 241. Second optical cable channel; 242. Base; 243. Clamping cantilever; 2431. Mounting groove; 244. Fitting block; 245. Optical cable mating insert;

[0031] 3. Outer shell assembly; 31. Main shell; 311. Inner cavity; 312. Annular flange; 32. Tail cover; 33. Connecting outer sleeve; 331. Protruding post; 34. Dust cap; 341. Opening;

[0032] 4. External optical cable; 41. Optical fiber. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0034] like Figures 1 to 5As shown, this utility model provides an optical fiber connector, including a quick-connect component 1, a waterproof component 2, and a housing component 3. The housing component 3 includes a main housing 31 with an inner cavity 311 and a perforated tail sleeve 32. The quick-connect component 1, as the core component for realizing optical signal conduction, is disposed in the inner cavity 311 to receive and secure the optical fiber 41, and to be plugged into the adapter to realize optical signal transmission and conduction, achieving a fast and stable connection of the optical fiber. The waterproof component 2 is disposed at the end of the inner cavity 311 away from the quick-connect component 1. The tail sleeve 32 is fitted on the end of the main housing 31 away from the quick-connect component 1 and covers the periphery of the waterproof component 2, so that the waterproof component 2 is not exposed to the housing component 3, thus protecting and fixing the external optical cable 4.

[0035] like Figures 3 to 6 As shown, the waterproof component 2 includes a sealing plug outer sleeve 21, a sealing plug 22, a sealing ring 23, and an optical cable guide 24. The sealing plug 22 has a first optical cable channel 221 for the optical fiber 41 of the external optical cable 4 to pass through and connect to the quick-connect component 1. The sealing plug outer sleeve 21 serves as the mounting base for the sealing plug 22, with one end fitted into the inner cavity 311. A sealing ring 23 is provided between the sealing plug outer sleeve 21 and the inner wall of the inner cavity 311 to ensure that the connection between the sealing plug outer sleeve 21 and the main housing 31 is watertight. The plug 22 is located inside the sealing plug outer sleeve 21, and one end of the optical cable guide 24 abuts against the tail sleeve 32 to fit and press the sealing plug 22 with the other end of the sealing plug outer sleeve 21, so that the sealing plug 22 tightly wraps the external optical cable 4 to prevent water from seeping in from around the external optical cable 4. The optical cable guide 24 has a second optical cable channel 241 that communicates with the first optical cable channel 221, so that the optical fiber 41 can pass through the tail sleeve 32, the optical cable guide 24 and the sealing plug 22 in sequence and extend into the quick-connect assembly 1.

[0036] Based on the above structure, during assembly and use, the quick-connect component 1 is placed in the main housing 31 of the outer shell component 3, and the opening of the main housing 31 away from the quick-connect component 1 is sealed by the waterproof component 2. The tail sleeve 32 is fitted onto the end of the main housing 31 away from the quick-connect component 1. The optical fiber 41 can pass sequentially through the tail sleeve 32, the second optical cable channel 241 of the optical cable guide 24, and the first optical cable channel 221 of the sealing plug 22, and connect with the quick-connect component 1. Since the sealing plug 22 has deformable characteristics, when the tail sleeve 32 is fitted onto one end of the main housing 31, the tail sleeve 32 contacts the optical cable guide 24 and drives the optical cable guide 24 to move axially, so that the optical cable guide 24 is embedded into the sealing plug outer sleeve 21 at the end away from the quick-connect component 1. At the same time, it applies an axial force to the sealing plug 22, making the assembly of the optical fiber connector easier and causing the sealing plug 22 to deform. Specifically, the sealing plug 22 is compressed in the axial direction and expanded in the radial direction. At the same time, due to the radial restriction effect of the sealing plug outer sleeve 21, the fit between the sealing plug 22 and the external optical cable 4, and the fit between the sealing plug 22 and the sealing plug outer sleeve 21 are both tighter. After the tail sleeve 32 and the main housing 31 are assembled, the tail sleeve 32 can restrict the optical cable guide 24 from coming out of the sealing plug outer sleeve 21, thereby ensuring the sealing performance of the optical fiber connector and achieving the sealing effect between the external optical cable 4 and the waterproof component 2.

[0037] Furthermore, the sealing ring 23 between the sealing plug outer sleeve 21 and the main housing 31 achieves a sealing effect between the waterproof component 2 and the main housing 31. That is, this embodiment allows the optical fiber 41 of the external optical cable 4 to extend smoothly into the quick-connect component 1, and after the optical fiber connector and adapter are plugged in, the waterproof component 2, the outer housing component 3, and the adapter jointly seal the quick-connect component 1, achieving the waterproof and dustproof function of the optical fiber connector and effectively improving the working stability and service life of the optical fiber connector in complex environments.

[0038] It should be noted that the sealing plug 22 in this embodiment is a deformable sealing plug 22, such as one made of silicone material. Furthermore, the sealing plug outer sleeve 21 in this embodiment has a cylindrical hollow structure for mounting the sealing plug 22 and the optical cable guide 24. The sealing plug outer sleeve 21 is provided with an annular groove for mounting the sealing ring 23.

[0039] In some embodiments, the outer wall of the sealing plug sleeve 21 may be provided with a protrusion structure, and the end of the main housing 31 away from the quick-connect assembly 1 may be provided with a groove adapted to the protrusion structure, so as to fit and install the sealing plug sleeve 21 during installation and prevent it from moving when subjected to the axial force of the optical cable guide 24.

[0040] Furthermore, the optical cable guide 24 includes a base 242, a clamping cantilever 243 with a mounting groove 2431, a mating block 244, and an optical cable mating insert 245. The base 242 is the main structure of the entire optical cable guide 24 and is used to fix other components. Multiple mating blocks 244 are spaced around the axis of the base 242 on the outer side wall of the base 242. The outer side wall of the sealing plug sleeve 21 has multiple mating grooves 211 that are adapted to the mating blocks 244 to achieve locking between the sealing plug sleeve 21 and the base 242 and prevent rotational loosening. The base 242 has a second optical cable channel 241 that runs through both ends of it. The clamping cantilever 243 is connected to the base 242 and extends along the axial direction of the second optical cable channel 241 to form a clamping space that communicates with the second optical cable channel 241. The insertion side of the optical cable mating insert 245 is inserted into the mounting groove 2431 so that the clamping sides of the two optical cable mating inserts 245 are arranged opposite to each other in the clamping space to clamp the external optical cable 4, prevent it from shaking or falling off, and at the same time play a centering role.

[0041] Based on the above structure, two optical cable mating inserts 245 are inserted into the mounting groove 2431 through their plug-in sides, and their clamping sides are arranged opposite each other. After the optical fiber 41 passes through the clamping space and docks with the quick-connect assembly 1, the clamping sides of the two optical cable mating inserts 245 clamp the external optical cable 4 to achieve positioning and prevent pull-out.

[0042] It should be noted that, since there are various types of external optical cables 4, including round cables and butterfly cables, the optical cable mating insert 245 allows the waterproof component 2 to adapt to different types of external optical cables 4 by simply replacing the optical cable mating insert 245, which effectively improves the compatibility range of the fiber optic connector.

[0043] like Figure 3 and Figure 7 As shown, the quick-connect assembly 1 includes a quick-connect body 11 with a receiving cavity 111 and a ferrule assembly 12. The ferrule assembly 12 is disposed in the receiving cavity 111, and the ferrule 121 in the ferrule assembly 12 protrudes from the opening of the quick-connect body 11 at the end away from the waterproof component 2. Understandably, the ferrule 121 of the ferrule assembly 12 is used to insert into the mating end to achieve sealing and conductivity, thereby enabling connection with other components. A ferrule cap 122 can be fitted around the ferrule 121 for dust protection during transportation or when not in use.

[0044] Furthermore, the quick-connect assembly 1 also includes an optical cable clamp 13 and a rear cover 14. The quick-connect body 11 has a mounting portion 112 at one end near the waterproof assembly 2. The mounting portion 112 is a groove or receiving area. The optical cable clamp 13 is used to clamp the external optical cable 4 to prevent the external optical cable 4 from being pulled off or loosened during use. It is located in the mounting portion 112. The rear cover 14 is rotatably connected to the quick-connect body 11 and covers the mounting portion 112, so that the rear cover 14 can be flipped open or flipped closed to seal the mounting portion 112 and protect the internal structure.

[0045] Furthermore, the optical cable clamp 13 includes a cover 131, a clamping groove 132, and a locking nut 133. The clamping groove 132 has a slotted structure for accommodating the external optical cable 4. The cover 131 is fastened to the clamping groove 132 and seals the opening of the clamping groove 132 to form a third optical cable channel for installing the external optical cable 4, used to guide and fix the external optical cable 4. The outer wall of the clamping groove 132 is provided with threads 1321. The locking nut 133 is locked to the clamping groove 132 through the threads 1321. When the external optical cable 4 is placed into the clamping groove 132 and the cover 131 is closed, the locking nut 133 is tightened on the clamping groove 132 to further compress the entire clamping structure, thereby enhancing the clamping force to achieve effective clamping of the external optical cable 4 and prevent the external optical cable 4 from loosening due to vibration or pulling.

[0046] It should be noted that the clamping groove 132 in this embodiment has an outwardly extending protrusion, and the outer wall of the protrusion is provided with a thread 1321. During use, the external optical cable 4 will inevitably be subjected to tensile force. When the external optical cable 4 and the optical fiber connector are relatively misaligned due to this tensile force, the optical signal transmission performance and waterproof / dustproof performance will be greatly reduced. In this embodiment, the optical cable clamp 13 with the above-described structure can place the fiber layer of the external optical cable 4 between the locking nut 133 and the protrusion of the clamping groove 132. After the locking nut 133 is locked into the clamping groove 132 by the thread 1321, the tensile strength of the external optical cable 4 can be effectively improved.

[0047] See also Figure 8 The quick-connect assembly 1 also includes a movable guide rail 15. The mounting part 112 is provided with a guide groove. The movable guide rail 15 is detachably installed in the guide groove for easy installation or removal, and convenient maintenance or replacement. The movable guide rail 15 can move axially along the guide groove. The optical cable clamp 13 is installed on the movable guide rail 15 so that as the movable guide rail 15 moves into place, the optical cable clamp 13 is also located in the mounting part 112.

[0048] Understandably, since the optical fiber 41 needs to be inserted into the ferrule assembly 12 along the axial direction during the assembly of the optical fiber connector, and since the optical fiber is relatively fragile, it is easily damaged due to positional deviation during assembly. The setting of the moving guide rail 15 in this embodiment can improve the stability of the optical fiber 41 during assembly, thereby avoiding damage to the optical fiber 41 and affecting the optical signal transmission.

[0049] Furthermore, the movable guide rail 15 is provided with a first protrusion 151, and the optical cable clamp 13 is provided with a first recess 134 that matches the first protrusion 151; and / or the movable guide rail 15 is provided with a second recess 152, and the optical cable clamp 13 is provided with a second protrusion that matches the second recess 152.

[0050] Understandably, in this embodiment, the movable guide rail 15 has a first protrusion 151, and the optical cable clamp 13 has a corresponding first recess 134. The two can fit together to achieve positioning and limiting, ensuring that the optical cable clamp 13 is accurately positioned on the movable guide rail 15 and preventing misalignment. In addition, in some embodiments, the movable guide rail 15 may also be provided with a second recess 152, and the optical cable clamp 13 may have a corresponding second protrusion. The above two mating structures can be used alone or simultaneously to increase the stability and reliability of the connection. When used simultaneously, the bidirectional convex-concave fit can prevent the clamp from loosening in multiple directions, improving assembly accuracy and repeatability.

[0051] Furthermore, the movable guide rail 15 has a guide rail body 153 and a cantilever buckle 154. The guide rail body 153 has a through hole groove 1531. The cantilever buckle 154 is connected to the guide rail body 153 and is located in the through hole groove 1531. The quick-connect body 11 has a locking hole 113. The cantilever buckle 154 and the locking hole 113 are connected. When the movable guide rail 15 is connected to the quick-connect body 11, it moves to the point where the cantilever buckle 154 and the locking hole 113 on the quick-connect body 11 are connected. The cantilever buckle 154 is locked inside the locking hole 113 to complete the assembly of the optical fiber 41 and the ferrule assembly 12.

[0052] Furthermore, the outer casing assembly 3 also includes a connecting sleeve 33. An annular flange 312 is provided on the outer periphery of the end of the main casing 31 furthest from the tail sleeve 32, serving as a mechanical limiting structure to restrict the axial movement of other parts. The connecting sleeve 33 is fitted onto the outer periphery of the main casing 31, serving to wrap and protect the main casing 31. The end of the connecting sleeve 33 furthest from the tail sleeve 32 abuts against the annular flange 312. When the connecting sleeve 33 is fitted onto the main casing 31, one end (the end furthest from the tail sleeve 32) abuts against the annular flange 312 on the main casing 31, forming an axial contact or limiting, achieving axial positioning, and ensuring that the connecting sleeve 33 will not slide or move during assembly, maintaining a fixed position.

[0053] Furthermore, due to the diverse structures of adapters, the required structure of the fiber optic connector housing assembly 3 varies depending on the adapter's structure. To broaden the applicability of the fiber optic connector, the housing assembly 3 in this embodiment includes a connecting sleeve 33, the structure of which can be customized according to the adapter requirements. This allows for the use of different adapter structures without replacing the entire housing assembly 3.

[0054] Furthermore, the outer casing assembly 3 also includes a dust cap 34, which has an opening 341 for positioning or fixing with other structures. The connecting outer sleeve 33 has a protrusion 331 for inserting into the opening 341 on the dust cap 34 to achieve connection or positioning between the two. The dust cap 34 is fitted around the outer periphery of the connecting outer sleeve 33 to wrap around the connecting outer sleeve 33, forming physical protection and sealing. The protrusion 331 and the opening 341 are engaged to achieve mechanical connection and prevent the dust cap 34 from loosening or falling off, thereby sealing the opening at the end of the main casing 31 away from the tail sleeve 32, preventing dust, moisture, foreign objects, etc. from entering the equipment and protecting the internal components.

[0055] Understandably, during the transportation of fiber optic connectors, a dust cap 34 can be fitted over the outside of the connecting sleeve 33 to prevent dust accumulation. Simultaneously, when the dust cap 34 is fitted over the connecting sleeve 33, the protrusion 331 engages with the opening 341. For the dust cap 34 to detach, it must overcome the resistance of the protrusion 331 disengaging from the opening 341, thus preventing the dust cap 34 from falling off during transportation or storage and improving the stability of its use.

[0056] In summary, this utility model provides an optical fiber connector that allows the optical fiber 41 of the external optical cable 4 to extend smoothly into the quick-connect assembly 1. After the optical fiber connector and adapter are plugged in, the quick-connect assembly 1 is sealed by the waterproof assembly 2, the outer shell assembly 3, and the adapter, thereby achieving the waterproof and dustproof function of the optical fiber connector and effectively improving the working stability and service life of the optical fiber connector in complex environments.

[0057] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. An optical fiber connector, characterized in that, Includes quick-connect components, waterproof components, and housing components; The housing assembly includes a main housing with an inner cavity and a tail sleeve with perforations. The quick-connect assembly is disposed in the inner cavity, and the waterproof assembly is disposed at the end of the inner cavity away from the quick-connect assembly. The tail sleeve is fitted onto one end of the main housing and covers the periphery of the waterproof assembly so that the waterproof assembly is not exposed to the housing assembly. The waterproof component includes a sealing plug outer sleeve, a sealing plug, a sealing ring, and an optical cable guide. The sealing plug has a first optical cable channel for the optical fiber of an external optical cable to pass through and connect to the quick-connect component. One end of the sealing plug outer sleeve is fitted into the inner cavity, and the sealing ring is disposed between the sealing plug outer sleeve and the inner wall of the inner cavity. The sealing plug is disposed inside the sealing plug outer sleeve, and one end of the optical cable guide abuts against the tail sleeve to fit and press against the sealing plug with the other end of the sealing plug outer sleeve. The optical cable guide has a second optical cable channel communicating with the first optical cable channel.

2. The fiber optic connector according to claim 1, characterized in that, The optical cable guide includes a base, a clamping cantilever with a mounting groove, a fitting block, and an optical cable mating insert. Multiple fitting blocks are spaced apart on the outer wall of the base around its axis. The outer wall of the sealing plug sleeve has multiple fitting grooves adapted to the fitting blocks. The base has a second optical cable channel extending through both ends. The clamping cantilever is connected to the base and extends along the axial direction of the second optical cable channel to form a clamping space communicating with the second optical cable channel. The insertion side of the optical cable mating insert is inserted into the mounting groove, such that the clamping sides of two optical cable mating inserts are positioned opposite each other in the clamping space.

3. The fiber optic connector according to claim 2, characterized in that, The quick-connect assembly includes a quick-connect body with a receiving cavity and a plug assembly, the plug assembly being disposed in the receiving cavity and the plug in the plug assembly protruding from an opening of the quick-connect body at the end away from the waterproof component.

4. The fiber optic connector according to claim 3, characterized in that, The quick-connect assembly also includes an optical cable clamp and a rear cover. The quick-connect body has a mounting portion at one end near the waterproof assembly. The optical cable clamp is disposed in the mounting portion. The rear cover is rotatably connected to the quick-connect body and covers the mounting portion.

5. The fiber optic connector according to claim 4, characterized in that, The optical cable clamp includes a cover, a clamping groove, and a locking nut. The cover is fastened to the clamping groove and seals the opening of the clamping groove to form a third optical cable channel for the installation of the external optical cable. The outer wall of the clamping groove is provided with threads, and the locking nut is locked to the clamping groove through the threads.

6. The fiber optic connector according to claim 4 or 5, characterized in that, The quick-connect assembly also includes a movable guide rail, the mounting part is provided with a guide groove, the movable guide rail is detachably installed in the guide groove, and the movable guide rail can move axially along the guide groove, and the optical cable clamp is installed on the movable guide rail.

7. The fiber optic connector according to claim 6, characterized in that, The movable guide rail is provided with a first protrusion, and the optical cable clamp is provided with a first recess that matches the first protrusion; and / or The moving guide rail is provided with a second recess, and the optical cable clamp is provided with a second protrusion that matches the second recess.

8. The fiber optic connector according to claim 6, characterized in that, The movable guide rail has a guide rail body and a cantilever buckle. The guide rail body has a through hole groove. The cantilever buckle is connected to the guide rail body and is located in the through hole groove. The quick-connect body has a locking hole. The cantilever buckle and the locking hole are connected in cooperation.

9. The fiber optic connector according to claim 1, characterized in that, The outer shell assembly further includes a connecting sleeve. The outer periphery of the main shell away from the tail sleeve is provided with an annular flange. The connecting sleeve is fitted onto the outer periphery of the main shell, and the outer periphery of the connecting sleeve away from the tail sleeve abuts against the annular flange.

10. The fiber optic connector according to claim 9, characterized in that, The outer casing assembly also includes a dust cap with an opening, and a protrusion on the connecting sleeve. The dust cap is fitted onto the outer periphery of the connecting sleeve, and the protrusion engages with the opening to cover the opening at the end of the main casing away from the tail sleeve.

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