A through-the-wall LC fiber optic connector

Abstract

The present invention relates to the technical field of optical fiber connectors and discloses a through-the-wall LC optical fiber connector, comprising a ferrule assembly housed within a main body shell, a stopper snap-connected to the right end of the main body shell, and a pressure ring assembly connected to the right end of the stopper. The pressure ring assembly is used to rivet and secure an optical cable to a metal shank at the right end of the stopper. A rubber sealing assembly is sleeved on the outer side of the metal shank. The present invention rivets and secures the optical cable to the metal shank at the right end of the stopper via the pressure ring assembly. This combined riveting significantly improves the tensile strength of the optical cable and connector. The optical cable aramid yarn passes around the winding table, increasing friction between the two. The end cap presses and secures the optical cable aramid yarn in the wire trough within the optical cable aramid yarn, thereby further improving the tensile strength between the optical cable and the connector after assembly. The rubber sealing assembly closely cooperates with the pressure ring assembly and the stopper to achieve multiple seals.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber connectors, in particular to a through-the-wall LC optical fiber connector. Background Art

[0002] LC fiber optic connectors, due to their compact size, stable connection performance, and high connection density, are widely used in fiber optic connection systems and are gradually replacing SC and FC connectors, particularly in space-sensitive scenarios such as 5G base stations and compact equipment. However, due to their small size, the connection between the optical cable and connector is not secure enough. This is especially difficult to achieve in situations where through-wall wiring is required, as the high tensile strength requirements between the optical cable and connector are difficult to meet. Furthermore, under complex construction conditions, the connection between the optical cable and connector must be sealed tightly, as dust, moisture, and other external factors may enter the connector, potentially affecting the internal structure and fiber core. To address this issue, we have introduced a through-wall LC fiber optic connector. Summary of the Invention

[0003] The object of the present invention is to provide a through-the-wall LC optical fiber connector to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A through-the-wall LC fiber optic connector includes a ferrule assembly installed in a main body shell, a stopper snap-connected to the right end of the main body shell, and a pressure ring barrel assembly connected to the right end of the stopper. The pressure ring barrel assembly is used to rivet and fix the optical cable to the metal turntable tail handle on the right end of the stopper, and the right end of the pressure ring barrel assembly bites and seals the outside of the optical cable.

[0006] The outer side of the metal turning flower tail handle is sleeved with a rubber sealing component, and the left end of the pressure ring cylinder component is sleeved on the outer side of the rubber sealing component, pressing the rubber sealing component tightly and sealing it on the outer surface of the metal turning flower tail handle;

[0007] A protective sleeve is sleeved on the outer side of the connection between the stopper and the pressure ring cylinder assembly.

[0008] Preferably, the ferrule assembly includes a ceramic ferrule and a ferrule tail handle fixed by interference fit, the ferrule tail handle extends through a reserved hole at the left end of the main shell, and a spring sleeved on the ferrule tail handle abuts against the left end of the stopper.

[0009] Preferably, the ferrule tail handle includes a sleeve for sleeve-connecting the spring and a plug connector connected to the left end of the sleeve via a limit plate;

[0010] The right end of the ceramic ferrule is plugged into the plug connector, the plug connector extends through the reserved hole, and the limit plate is clamped at the right end of the reserved hole.

[0011] Preferably, the two sides of the main body shell are provided with a first card slot and a U-shaped reserved slot in sequence from left to right;

[0012] The stopper comprises a stop head, a metal turning handle arranged at the right end of the stop head, and a clip cylinder arranged at the left end of the stop head;

[0013] The two sides of the buckle cylinder are provided with a first buckle protrusion and a slot in sequence from left to right, and the left end of the slot is provided with a second buckle protrusion;

[0014] When the first snap-fit ​​protrusion is locked in the first slot, the second snap-fit ​​protrusion is located in the U-shaped reserved slot, so as to realize the snap-fit ​​connection between the main body shell and the stopper.

[0015] Preferably, a hollow outer frame is sleeved on the outer side of the main body shell, second slots are provided on both sides of the hollow outer frame, and a first limiting plane is provided on the top wall of the inner hole of the hollow outer frame;

[0016] The top of the stop head is provided with a second limiting plane;

[0017] The right end of the hollow outer frame is sleeved on the stop head, so that the first limiting plane is fitted with the second limiting plane, and the second buckle protrusion is clamped in the second clamping groove to achieve the connection between the hollow outer frame and the stopper.

[0018] Preferably, a through-wall cap is sleeved on the outer side of the main body shell, an outer side of the left end of the stop head is provided with an external thread, an inner wall of the right end of the through-wall cap is provided with an internal thread threadedly connected to the external thread, and a threading hole is provided at the left end of the through-wall cap.

[0019] Preferably, the pressing ring cylinder assembly includes a sleeve for sleeve-mounted on the metal turning flower tail handle and a crimping cylinder connected to the right end of the sleeve by a truncated cone-shaped hollow cylinder, and the diameter of the truncated cone-shaped hollow cylinder gradually decreases from left to right;

[0020] The optical cable comprises a fiber core, a first inner cladding, a second inner cladding and an outer sheath of the optical cable, which are sequentially arranged from the inside to the outside, and an optical cable aramid yarn is further arranged between the second inner cladding and the outer sheath of the optical cable;

[0021] The sleeve is used to rivet and fix the optical cable aramid wire on the surface of the metal turning flower tail handle. The inner wall of the crimping barrel is provided with a bite thread, and the outer sheath of the optical cable is bitten into the bite thread by stamping.

[0022] Preferably, the rubber sealing assembly includes a left sealing ring and a right sealing ring sleeved on the metal turning handle;

[0023] The sleeve is sleeved and pressed tightly on the outside of the rubber sealing component;

[0024] The left sealing ring and the right sealing ring are connected by a rubber strip;

[0025] An annular clamping groove is provided inside the right sealing ring, and the right end of the metal turning flower tail handle is sealed and clamped in the annular clamping groove.

[0026] Preferably, the right end of the right sealing ring is provided with a truncated cone-shaped sealing end head which is in close contact with the inner wall of the truncated cone-shaped hollow cylinder;

[0027] A wire passage groove for passing the aramid yarn of the optical cable is provided between the truncated cone-shaped sealing end head and the top of the right sealing ring, and an end cover is provided on the top of the wire passage groove.

[0028] Preferably, a plurality of winding platforms are provided in the wire groove, and the left end of the optical cable aramid yarn passes through the plurality of winding platforms and then extends to the surface of the metal turning flower tail handle;

[0029] The upper end of the winding table is provided with a plug-in hole, and the plug-in column at the bottom of the end cover is inserted into the corresponding plug-in hole.

[0030] Compared with the prior art, the beneficial effects of the present invention are: the present invention rivets and fixes the optical cable and the metal turned tail handle at the right end of the stopper through the pressure ring tube assembly, and the combined riveting greatly improves the tensile strength of the optical cable and the connector, and the optical cable aramid wire passes around the winding table, increasing the friction between the two, and the end cover presses and fixes the optical cable aramid wire in the wire groove in the optical cable aramid wire, thereby further improving the tensile strength between the optical cable and the connector after the connector and the optical cable are assembled.

[0031] The rubber seal assembly works closely with the pressure ring and barrel assembly and retainer to achieve multiple seals. The sleeve fits over the rubber seal assembly, sealing it against the outer surface of the metal shank. The annular groove inside the right sealing ring engages the right end of the metal shank, and the frustum-shaped sealing tip fits snugly against the inner wall of the hollow barrel, effectively preventing external dust and moisture from entering the connector, protecting the internal structure and fiber core from external influences, and meeting the high requirements for connection sealing under complex construction conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the exploded structure of the overall assembly of the present invention;

[0033] Figure 2 This is a schematic diagram of the exploded structure of the main body shell, the insert assembly and the stopper assembly of the present invention;

[0034] Figure 3 This is a schematic diagram of the exploded structure of the assembly of the stopper, rubber seal assembly and pressure ring cylinder assembly of the present invention;

[0035] Figure 4 It is a schematic diagram of the exploded structure of the hollow outer frame and the stopper assembly of the present invention;

[0036] Figure 5This is a schematic diagram of the exploded structure of the assembly of the wall cap and the stopper of the present invention;

[0037] Figure 6 This is a schematic structural diagram of the connection between the right sealing ring, the left sealing ring and the rubber strip of the present invention;

[0038] Figure 7 It is a structural schematic diagram of the end cover of the present invention;

[0039] Figure 8 Schematic diagram of the structure of the optical cable of the present invention;

[0040] Figure 9 This is a schematic diagram of the structure of the optical cable, metal turning tail handle and rubber sealing component assembled according to the present invention;

[0041] Figure 10 This is a schematic structural diagram of the assembly of the main body shell, stopper, rubber sealing component and optical cable of the present invention;

[0042] Figure 11 It is a schematic structural diagram of the assembly of the stopper and the pressure ring cylinder assembly of the present invention;

[0043] Figure 12 Schematic diagram of the cross-sectional structure of the pressure ring cylinder assembly of the present invention;

[0044] Figure 13 This is a schematic diagram of the structure of the hollow outer frame, protective cover and optical cable assembly of the present invention;

[0045] Figure 14 This is a schematic structural diagram of the assembly of the wall cap, protective cover and optical cable of the present invention;

[0046] Figure 15 The figure is a schematic cross-sectional view of the assembly of the stopper, the pressure ring cylinder assembly, the rubber sealing assembly, the protective sleeve and the optical cable of the present invention.

[0047] In the picture:

[0048] 1. Main body shell; 101. First slot; 102. U-shaped reserved slot; 103. Reserved hole;

[0049] 2. Ferrule tail handle; 201. Plug connector; 202. Limit plate; 203. Socket;

[0050] 3. Ceramic ferrule;

[0051] 4. Spring;

[0052] 5. Stopper; 501. First buckle protrusion; 502. Second buckle protrusion; 503. External thread; 504. Metal turning handle; 505. Second limiting plane; 506. Buckle cylinder; 507. Stopper head; 508. Slot;

[0053] 6. Hollow outer frame; 601. Second slot; 602. First limiting plane;

[0054] 7. Pressing ring cylinder assembly; 701. Engaging thread; 702. Sleeve; 703. Crimping cylinder; 704. Truncated cone-shaped hollow cylinder;

[0055] 8. Protective cover;

[0056] 9. Wall cap; 901. Internal thread; 902. Threading hole;

[0057] 10. Rubber sealing assembly; 1001. Right sealing ring; 1002. Left sealing ring; 1003. Rubber strip; 1004. End cap; 10041. Connecting post; 1005. Cone-shaped sealing end; 1006. Wire groove; 1007. Winding table; 1008. Connecting hole; 1009. Annular slot;

[0058] 11. Optical cable; 111. Optical cable outer sheath; 112. Optical cable aramid filament; 113. Second inner cladding; 114. First inner cladding; 115. Fiber core. DETAILED DESCRIPTION

[0059] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0060] See also Figure 1-15 , the present invention provides a technical solution:

[0061] A through-wall LC optical fiber connector, comprising a ferrule assembly installed in a main body shell 1, a stopper 5 snap-connected to the right end of the main body shell 1, and a pressure ring cylinder assembly 7 connected to the right end of the stopper 5;

[0062] The ferrule assembly includes a ceramic ferrule 3 and a ferrule handle 2 fixed by interference fit. The ferrule handle 2 extends through the reserved hole 103 at the left end of the main body shell 1. The spring 4 sleeved on the ferrule handle 2 abuts against the left end of the stopper 5.

[0063] The ferrule tail handle 2 includes a sleeve 203 for sleeve-fitting the spring 4 and a plug connector 201 connected to the left end of the sleeve 203 via a limit plate 202;

[0064] The right end of the ceramic ferrule 3 is inserted into the plug connector 201 . Under the elastic force of the spring 4 on the ferrule tail handle 2 , the plug connector 201 extends through the reserved hole 103 , and the limit plate 202 is stuck at the right end of the reserved hole 103 .

[0065] The two sides of the main shell 1 are provided with a first slot 101 and a U-shaped reserved slot 102 in sequence from left to right;

[0066] The stopper 5 includes a stopper head 507, a metal turning handle 504 provided at the right end of the stopper head 507, and a clip barrel 506 provided at the left end of the stopper head 507;

[0067] The two sides of the buckle cylinder 506 are provided with a first buckle protrusion 501 and a slot 508 from left to right, and the left end of the slot 508 is provided with a second buckle protrusion 502;

[0068] When the first snap-fit ​​protrusion 501 is locked in the first snap-fit ​​groove 101 , the second snap-fit ​​protrusion 502 is located in the U-shaped reserved groove 102 , so as to realize the snap-fit ​​connection between the main body shell 1 and the stopper 5 .

[0069] The main housing 1 is provided with first slots 101 on both sides, and the stopper 5 is provided with corresponding first buckling protrusions 501. Through the buckling connection (i.e., the first buckling protrusions 501 are buckled into the first slots 101), the stopper 5 fixes the ferrule tail handle 2 and the spring 4 to the main housing 1.

[0070] The hollow outer frame 6 is provided with second snap-in grooves 601 on both sides, and the stopper 5 is provided with corresponding second snap-in protrusions 502. The stopper 5 fixes the main body shell 1 to the hollow outer frame 6 through snap connection (i.e., the second snap-in protrusions 502 are snapped into the second snap-in grooves 601).

[0071] The stopper 5 is designed with left and right double buckle positions (i.e., a first buckle protrusion 501 and a second buckle protrusion 502). The first buckle protrusion 501 is connected to the main shell 1, and the second buckle protrusion 502 is connected to the hollow outer frame 6, which can be repeatedly disassembled and used.

[0072] The pressing ring assembly 7 is used to fix the optical cable 11 to the metal turning tail handle 504 at the right end of the stopper 5 by riveting, and the right end of the pressing ring assembly 7 is engaged and sealed on the outside of the optical cable 11;

[0073] The pressing ring cylinder assembly 7 includes a sleeve 702 for sleeve-fitting onto the metal turning flower tail handle 504 and a crimping cylinder 703 connected to the right end of the sleeve 702 by a truncated cone-shaped hollow cylinder 704. The diameter of the truncated cone-shaped hollow cylinder 704 gradually decreases from left to right.

[0074] The optical cable 11 includes a fiber core 115, a first inner cladding 114, a second inner cladding 113 and an outer sheath 111, which are arranged in sequence from the inside to the outside. An optical cable aramid yarn 112 is further provided between the second inner cladding 113 and the outer sheath 111.

[0075] The pressure ring assembly 7 is punched so that the sleeve 702 is used to rivet and fix the optical cable aramid yarn 112 to the surface of the metal turning handle 504, so that the tensile force between the optical cable 11 and the stopper 5 meets 80N;

[0076] The inner wall of the crimping barrel 703 is provided with an engaging thread 701, and the outer sheath of the optical cable 111 is engaged in the engaging thread 701 by stamping, so that the tensile force of the outer sheath of the optical cable 111 and the stopper 5 meets 20N. The combined riveting improves the overall tensile strength of the optical cable 11 and the stopper 5.

[0077] The outer sheath 111 of the optical cable is engaged in the engaging thread 701 by punching, so as to achieve sealing between the right end of the pressure ring cylinder assembly 7 and the optical cable 11 .

[0078] The outer side of the metal turning handle 504 is sleeved with a rubber sealing assembly 10;

[0079] The rubber sealing assembly 10 includes a left sealing ring 1002 and a right sealing ring 1001 which are sleeved on the metal turning handle 504;

[0080] The sleeve 702 is sleeved and pressed against the outside of the rubber sealing assembly 10, so that the left sealing ring 1002 and the right sealing ring 1001 are tightly sealed between the sleeve 702 and the metal turning handle 504, both of which play a sealing role;

[0081] The left sealing ring 1002 and the right sealing ring 1001 are connected by a rubber strip 1003;

[0082] An annular groove 1009 is provided inside the right sealing ring 1001, and the right end of the metal turning flower tail handle 504 is sealed and clamped in the annular groove 1009, thereby further achieving the sealing effect of the right end of the metal turning flower tail handle 504;

[0083] The right end of the right sealing ring 1001 is provided with a truncated cone-shaped sealing end 1005 which is in close contact with the inner wall of the truncated cone-shaped hollow cylinder 704, so that the right end of the metal turning flower tail handle 504 and the interior of the pressure ring cylinder assembly 7 are sealed again;

[0084] That is, by providing the rubber sealing assembly 10 , multiple seals can be achieved at the connection between the stopper 5 and the pressure ring cylinder assembly 7 , thereby further improving the sealing effect and effectively preventing the intrusion of foreign substances.

[0085] A wire groove 1006 for passing the optical cable aramid yarn 112 is provided between the truncated cone-shaped sealing end 1005 and the top of the right sealing ring 1001 , and an end cover 1004 is provided on the top of the wire groove 1006 .

[0086] Several sets of winding platforms 1007 are provided in the cable groove 1006. The left end of the optical cable aramid yarn 112 passes through the several sets of winding platforms 1007 and then extends to the surface of the metal turning flower tail handle 504. As the optical cable aramid yarn 112 passes through the winding platforms 1007, the friction between the two is increased. Therefore, after the rubber sealing assembly 10, the pressure ring cylinder assembly 7 and the stopper 5 are firmly assembled, the tensile strength between the optical cable 11 and the stopper 5 can be improved.

[0087] The upper end of the winding platform 1007 is provided with a plug hole 1008, and the plug post 10041 at the bottom of the end cover 1004 is inserted into the corresponding plug hole 1008. This arrangement facilitates the positioning and installation of the end cover 1004.

[0088] When the pressure ring tube assembly 7 is stamped so that the truncated cone-shaped sealing end 1005 is tightly attached to the inner wall of the truncated cone-shaped hollow tube 704, the end cover 1004 will be squeezed, and the optical cable aramid wire 112 in the wire groove 1006 will be pressed and fixed in the optical cable aramid wire 112, thereby further improving the tensile strength between the optical cable 11 and the stopper 5 after the rubber sealing assembly 10, the pressure ring tube assembly 7 and the stopper 5 are firmly assembled.

[0089] The left end of the pressure ring cylinder assembly 7 is sleeved on the outside of the rubber sealing assembly 10, pressing and sealing the rubber sealing assembly 10 on the outer surface of the metal turning flower tail handle 504;

[0090] The sleeve 702 of the pressure ring tube assembly 7 is sleeved and pressed onto the outside of the rubber sealing assembly 10, pressing and sealing the rubber sealing assembly 10 onto the outer surface of the metal turning tail handle 504, thereby realizing a sealed connection between the stopper 5 and the pressure ring tube assembly 7, preventing external dust, water vapor, etc. from entering the interior of the connector, and protecting the internal structure and the fiber core 115 from being affected by the external environment.

[0091] The rubber sealing assembly 10 cooperates with the pressure ring cylinder assembly 7, the stopper 5, etc. to play a certain role in fixing and dispersing stress of the optical cable aramid yarn 112, which helps to improve the overall tensile strength of the optical cable 11 and the connector.

[0092] A protective sleeve 8 is sleeved on the outer side of the connection between the stopper 5 and the pressure ring cylinder assembly 7, and the right end of the optical cable 11 extends out through the right end of the protective sleeve 8.

[0093] The outer side of the main shell 1 is sleeved with a hollow outer frame 6, and the two sides of the hollow outer frame 6 are provided with second slots 601, and the top wall of the inner hole of the hollow outer frame 6 is provided with a first limiting plane 602;

[0094] A second limiting plane 505 is provided on the top of the stop head 507;

[0095] The right end of the hollow outer frame 6 is inserted into the stopper 507, so that the first limiting plane 602 is aligned with the second limiting plane 505. This ensures foolproof operation and improves operational reliability. The second locking protrusion 502 is locked into the second locking groove 601 to complete the connection between the hollow outer frame 6 and the stopper 5.

[0096] A through-wall cap 9 is sleeved on the outside of the main housing 1. An external thread 503 is provided on the outer side of the left end of the stopper 507. An internal thread 901 is provided on the inner wall of the right end of the through-wall cap 9 for threaded connection with the external thread 503. Through this threaded connection, the through-wall LC fiber optic connector can meet the wall penetration tensile strength of 140N.

[0097] The left end of the wall cap 9 is provided with a threading hole 902.

[0098] Specifically, when in use, the ceramic ferrule 3 and the ferrule tail handle 2 are fixed by interference fit, the ferrule tail handle 2 is rotated into the main body shell 1, the spring 4 is sleeved on the sleeve tube 203 of the ferrule tail handle 2, and the stopper 5 is fixed to the main body shell 1 through a buckle connection to complete the assembly of the main structure.

[0099] The pressing ring tube assembly 7 and the protective sleeve 8 are suitable for use with φ1.2~φ2.4mm optical cables. The pressing ring tube assembly 7 rivets the optical cable 11 to the metal turned tail handle 504 of the stopper 5, and the protective sleeve 8 is put on to cover the connection between the stopper 5 and the pressing ring tube assembly 7.

[0100] The hollow outer frame 6 is fixed to the stopper 5 through a snap connection, completing the overall assembly of the through-wall LC fiber optic connector. The left end of the fiber core 115 extends through the left end of the ceramic ferrule 3, and the ceramic ferrule 3 extends a distance from the left end of the hollow outer frame 6. The ceramic ferrule 3 is then polished and tested to ensure that the product connection performance meets the requirements.

[0101] When wall penetration construction is to be carried out, the hollow outer frame 6 is disassembled with a disassembly jig, and then the wall cap 9 is screwed to the stopper 5. After it is firmly fixed, the pull rope can be passed through the threading hole 902 to perform the wire pulling operation. After the construction is completed, the wall cap 9 is unscrewed, and then the hollow outer frame 6 is fixed to the stopper 5 to restore it to a connector for use.

[0102] The present invention adopts a combined installation structure of a stopper 5, a hollow outer frame 6, a wall cap 9, etc., which can realize the multi-function of assembling the wall cap 9 for use when penetrating a wall and assembling the hollow outer frame 6 for use when connecting equipment. In addition, the wall cap 9 and the hollow outer frame 6 can be repeatedly disassembled and assembled for use, and the cost of use is low.

[0103] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A through-the-wall LC fiber optic connector, comprising a ferrule assembly mounted in a main body housing, a stopper snap-fitted to the right end of the main body housing, and a pressure ring assembly connected to the right end of the stopper, characterized in that: The pressing ring assembly is used to fix the optical cable to the metal turning tail handle at the right end of the stopper by riveting, and the right end of the pressing ring assembly is engaged and sealed on the outside of the optical cable; The outer side of the metal turning flower tail handle is sleeved with a rubber sealing component, and the left end of the pressure ring cylinder component is sleeved on the outer side of the rubber sealing component, pressing the rubber sealing component tightly and sealing it on the outer surface of the metal turning flower tail handle; A protective sleeve is sleeved on the outer side of the connection between the stopper and the pressure ring cylinder assembly; The pressure ring cylinder assembly includes a sleeve for sleeve-mounted on the metal turning flower tail handle and a crimping cylinder connected to the right end of the sleeve by a truncated cone-shaped hollow cylinder, the diameter of the truncated cone-shaped hollow cylinder gradually decreasing from left to right; The optical cable comprises a fiber core, a first inner cladding, a second inner cladding and an outer sheath of the optical cable, which are sequentially arranged from the inside to the outside, and an optical cable aramid yarn is further arranged between the second inner cladding and the outer sheath of the optical cable; The sleeve is used to fix the aramid wire of the optical cable on the surface of the metal turning handle by riveting. The inner wall of the crimping barrel is provided with a bite thread, and the outer sheath of the optical cable is bitten into the bite thread by punching. The rubber sealing assembly includes a left sealing ring and a right sealing ring sleeved on the metal turning handle; The sleeve is sleeved and pressed tightly on the outside of the rubber sealing component; The left sealing ring and the right sealing ring are connected by a rubber strip; An annular groove is provided inside the right sealing ring, and the right end of the metal turning flower tail handle is sealed and clamped in the annular groove; The right end of the right sealing ring is provided with a truncated cone-shaped sealing end head which is in close contact with the inner wall of the truncated cone-shaped hollow cylinder; A wire groove for passing the aramid filament of the optical cable is provided between the truncated cone-shaped sealing end and the top of the right sealing ring, and an end cover is provided on the top of the wire groove; The wire groove is provided with a plurality of winding platforms, and the left end of the optical cable aramid wire passes through the plurality of winding platforms and then extends to the surface of the metal turning flower tail handle; The upper end of the winding table is provided with a plug-in hole, and the plug-in column at the bottom of the end cover is inserted into the corresponding plug-in hole.

2. The through-the-wall LC fiber optic connector according to claim 1, wherein: The ferrule assembly includes a ceramic ferrule and a ferrule tail handle fixed by interference fit. The ferrule tail handle extends through a reserved hole at the left end of the main shell, and a spring sleeved on the ferrule tail handle abuts against the left end of the stopper.

3. The through-the-wall LC fiber optic connector according to claim 2, wherein: The ferrule tail handle includes a sleeve for sleeve-connecting the spring and a plug connector connected to the left end of the sleeve through a limit plate; The right end of the ceramic ferrule is plugged into the plug connector, the plug connector extends through the reserved hole, and the limit plate is clamped at the right end of the reserved hole.

4. The through-the-wall LC fiber optic connector according to claim 1, wherein: The two sides of the main body shell are provided with a first card slot and a U-shaped reserved slot in sequence from left to right; The stopper comprises a stop head, a metal turning handle arranged at the right end of the stop head, and a clip cylinder arranged at the left end of the stop head; The two sides of the buckle cylinder are provided with a first buckle protrusion and a slot in sequence from left to right, and the left end of the slot is provided with a second buckle protrusion; When the first snap-fit ​​protrusion is locked in the first slot, the second snap-fit ​​protrusion is located in the U-shaped reserved slot, so as to realize the snap-fit ​​connection between the main body shell and the stopper.

5. The through-the-wall LC fiber optic connector according to claim 4, characterized in that: The outer side of the main body shell is sleeved with a hollow outer frame, the two sides of the hollow outer frame are provided with second slots, and the top wall of the inner hole of the hollow outer frame is provided with a first limiting plane; The top of the stop head is provided with a second limiting plane; The right end of the hollow outer frame is sleeved on the stop head so that the first limiting plane fits the second limiting plane and the second buckle protrusion is clamped in the second clamping groove to achieve the connection between the hollow outer frame and the stopper.

6. The through-the-wall LC fiber optic connector according to claim 4, wherein: A through-wall cap is sleeved on the outer side of the main body shell, an outer side of the left end of the stop head is provided with an external thread, an inner wall of the right end of the through-wall cap is provided with an internal thread threadedly connected to the external thread, and a threading hole is provided on the left end of the through-wall cap.

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