Pipe-penetrating optical fiber connector

Abstract

The utility model is applicable to the technical field of communication equipment, and provides a through-tube optical fiber connector, which comprises a connector body, an optical fiber component arranged in the connector body, a dust cap or an external adapter arranged at the front end of the connector body and surrounding the optical fiber component, and the optical fiber component comprises a ceramic ferrule, an optical fiber tail handle and a tail handle spring. The connector body is provided with an installation groove, one end of the tail handle spring abuts against the bottom of the installation groove, the other end of the tail handle spring abuts against the optical fiber tail handle, a fastening structure is arranged in the installation groove, the optical fiber tail handle is arranged between the fastening structure and the tail handle spring, and the ceramic ferrule extends out of the installation groove through the fastening structure and extends into the dustproof cap or the external adapter. The fastening structure and the tail handle spring act together to control the tail handle of the optical fiber to be always kept in a reasonable space, the tail handle spring provides buffer acting force outwards, the optical fiber is guaranteed not to be excessively pulled, the ceramic ferrule is guaranteed not to abut against the inner wall of the dustproof cap, and the effect of protecting the optical fiber and the ceramic ferrule is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of communication equipment, and in particular relates to a tube-through optical fiber connector. Background Art

[0002] At present, the fiber optic connector with tube insertion function will have the following problems before all the components are fully assembled and installed: the tail handle of the fiber optic component together with the ceramic ferrule is pushed outward by the elastic force of the tail handle spring, and at the same time, the tail handle has no reverse force to offset it, causing the tiny optical fiber to be broken by external force and scrapped;

[0003] Furthermore, during the perforation operation, after the traction cap is installed, the ceramic ferrule will be pushed toward the traction cap by the external thrust of the spring, causing scratches and other damage to the end face of the ceramic ferrule, resulting in a weakening of the transmitted signal.

[0004] Therefore, the prior art has defects. Utility Model Content

[0005] The utility model aims to overcome the disadvantage of the prior art that the optical fiber assembly is easily damaged, and provides a tube-through optical fiber connector.

[0006] The utility model is implemented as follows: a through-tube optical fiber connector, comprising a centrally-through connector body, an optical fiber assembly being arranged in the connector body, a dust cap or an external adapter surrounding the optical fiber assembly being detachably arranged at the front end of the connector body, the optical fiber assembly comprising a ceramic ferrule, an optical fiber tail handle and an optical fiber tail handle spring being connected in sequence, an optical cable assembly being connected at the rear end of the connector body, a mounting groove being provided in the connector body, one end of the tail handle spring being abutted against the bottom of the mounting groove, and the other end being abutted against the optical fiber tail handle, a fastening structure being provided on the mounting groove for limiting the optical fiber tail handle, the ceramic ferrule extending out of the mounting groove through the fastening structure and extending into the dust cap or the external adapter.

[0007] Furthermore, the fastening structure is a protrusion disposed inwardly of the installation groove, and the protrusion cooperates with a tail handle spring to control the relative position of the optical fiber tail handle in the radial direction of the installation groove.

[0008] Furthermore, the external adapter includes an inner fixing shell and an outer fixing shell, a raised clamping platform is provided on the outer wall of the connector body, a connecting groove surrounding the ceramic insert is provided inside the tail end of the inner fixing shell, and an opening communicating with the connecting groove is provided on the outer wall of the inner fixing shell, when the inner fixing shell is connected to the connector body, the clamping platform is embedded in the clamping hole, and the outer fixing shell is covered on the outside of the inner fixing shell.

[0009] Furthermore, a first protruding platform is provided on the outer wall of the connector body, and a first opening is provided on the inner fixing shell. When the connector body is connected to the inner fixing shell, the first protruding platform is embedded in the first opening.

[0010] Furthermore, at least one second opening communicating with the mounting groove is formed on the side wall at the front end of the connector body, and an anti-fouling component embedded in one of the second openings is formed on the outer wall of the optical fiber tail handle.

[0011] Furthermore, two second openings are provided, and a second protruding platform embedded in another second opening is provided on the inner wall of the inner fixed shell.

[0012] Furthermore, the rear end of the dust cap is connected to the connector body, and the front end of the dust cap is connected to a traction component via a universal joint, and the traction component is provided with a hole for fixing the traction rope.

[0013] Furthermore, the universal part includes a rotating head arranged at the front end of the dust cap, a slot arranged inside the traction component and a third opening arranged on the outer wall of the traction component, the slot is communicated with the third opening, the rotating head is embedded in the slot, and a positioning block for positioning the rotating head is provided on the slot, and the positioning block is arranged along the inner wall of the slot and extends to the third opening.

[0014] Furthermore, the traction component includes a clamping member and an adjusting member, the clamping slot and the third opening are both provided on the clamping member, the tail of the adjusting member is embedded in the clamping slot and is threadedly connected to the front end of the clamping slot, and the tail of the adjusting member controls the position of the rotating head in the clamping slot.

[0015] The utility model provides a tube-threading optical fiber connector, in which an installation groove is provided in a connector body, and a fastening structure is provided on the installation groove. The fastening structure and the tail handle spring work together to control the optical fiber tail handle to always remain in a reasonable space, and while the spring provides a buffering force outward, it ensures that the optical fiber on the tail handle will not be excessively pulled and the ceramic ferrule will not contact and wear the inner wall of the dust cap, so that the optical fiber and the ceramic ferrule are effectively protected and can better adapt to the complex environment of tube threading. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] The following drawings are only intended to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0018] Figure 1 It is a structural schematic diagram provided by the utility model.

[0019] Figure 2 It is a structural explosion diagram provided by the utility model.

[0020] Figure 3 It is a structural schematic diagram of the first raised platform in the utility model.

[0021] Figure 4 It is a structural schematic diagram of the middle key gear platform of the utility model.

[0022] Figure 5 It is a schematic structural diagram of the matching of a connector body, an optical fiber assembly and a dust cap in the utility model.

[0023] Figure 6 It is a cross-sectional view of the matching of the connector body, the optical fiber assembly and the inner fixing shell in the utility model.

[0024] Figure 7 It is a schematic diagram of the structure of the cooperation between a first opening and a first raised platform in the utility model.

[0025] Figure 8 It is a schematic structural diagram of another first opening and key tooth platform in the utility model.

[0026] Fig. 9 It is a structural schematic diagram of the second raised platform in the utility model.

[0027] Fig.10 It is a structural schematic diagram of the traction component in the utility model.

[0028] Fig.11 It is a cross-sectional view of the cooperation between the dust cap and the traction component in the utility model.

[0029] Fig.12 It is a schematic diagram of a threaded connection between a dust cap and a connector body in the utility model.

[0030] Description of the accompanying figures: 1. Connector body; 11. Mounting groove; 12. Fastening structure; 13. First raised platform; 14. Second opening; 15. Key tooth platform; 16. Clamping platform; 17. Strengthening platform; 18. Direction indication platform; 19. Fixed optical cable platform; 2. Optical fiber assembly; 21. Ceramic ferrule; 22. Optical fiber tail handle; 221. Anti-fouling component; 23. Tail handle spring; 3. Dust cap; 31. Key tooth groove; 311. Radial part; 312. Transverse part 313, notch; 314, rotating head; 32, traction component; 321, slot; 322, third opening; 323, hole; 324, positioning block; 325, clamp; 326, adjustment member; 4, external adapter; 41, inner fixing shell; 411, connecting groove; 412, opening; 413, first opening; 414, second raised platform; 42, outer fixing shell; 5, optical cable assembly; 51, crimping ring; 52, heat shrink tube; 53, optical cable body. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] See also Figure 1-Figure 12 , is a through-tube optical fiber connector disclosed in the utility model, including a middle-through connector body 1, an optical fiber assembly 2 is arranged in the connector body 1, a dust cap or an external adapter 4 surrounding the optical fiber assembly 2 is detachably provided at the front end of the connector body 1, the optical fiber assembly 2 includes a ceramic ferrule 21, an optical fiber tail handle 22 and a tail handle spring 23 connected in sequence, and an optical cable assembly 5 is connected to the rear end of the connector body 1.

[0033] The connector body 1 is provided with a mounting groove 11. The ceramic ferrule 21, the optical fiber tail handle 22 and the tail handle spring 23 are sequentially assembled and inserted into the mounting groove 11 from front to back. At this time, one end of the tail handle spring 23 abuts against the bottom of the mounting groove 11. The inner diameter of the mounting groove 11 is preferably larger than the inner diameter of the middle passage of the connector body 1 to prevent the tail handle spring 23 from shifting when compressed, and plays the role of positioning the tail handle spring 23. The other end of the tail handle spring 23 abuts against the optical fiber tail handle 22. The mounting groove 11 is provided with a fastening structure 12 for limiting the optical fiber tail handle 22. The ceramic ferrule 21 extends out of the mounting groove 11 through the fastening structure 12 and extends into the dust cap 3 or the external adapter 4. In this embodiment, the fastening structure 12 is a protrusion arranged inwardly of the installation groove 11. After the optical fiber assembly 2 is installed in the installation groove 11, the protrusion can be formed by crimping the front part of the installation groove 11. The optical fiber tail handle 22 is arranged between the protrusion and the tail handle spring 23. The protrusion, that is, the fastening structure 12 and the tail handle spring 23 cooperate to control the relative position of the optical fiber tail handle 22 in the radial direction of the installation groove 11, so that the optical fiber tail handle 22 always moves within a reasonable space. While the tail handle spring 23 provides a buffering force outward, it ensures that the optical fiber will not be excessively pulled and the ceramic ferrule 21 will not contact the inner wall of the dust cap 3 or the external adapter 4, resulting in wear of the ceramic ferrule 21, so that the optical fiber and the ceramic ferrule 21 will be effectively protected and can adapt to the complex environment of better pipe threading.

[0034] Before the connector body 1 is inserted into the pipe, the connector body 1 needs to be connected to the dust cap 3, specifically, the tail end of the dust cap 3 is connected to the connector body 1. It is worth mentioning that this scheme does not limit the detachable connection method between the dust cap 3 and the connector body 1. Here, this scheme provides a first embodiment of the connection between the dust cap 3 and the connector body 1: the dust cap and the connector body 1 are connected by key teeth. Specifically, raised key tooth platforms 15 are provided on both sides of the outer wall of the connector body 1, and the dust cap 3 is provided with a key tooth groove 31 adapted to the key tooth platform 15, and the key tooth groove 31 includes a radial portion 3 that is connected to each other. 11 and a transverse portion 312, the radial portion 311 extends forward from the rear end of the dust cap 3, and the transverse portion 312 is connected to one end of the radial portion 311 away from the rear end of the dust cap 3. When the connector body 1 is connected to the dust cap 3, the dust cap 3 is moved radially and the ceramic ferrule 21 is sleeved therein until the dust cap 3 moves to make the key tooth platform 15 radially enter into the radial portion 311, and then the dust cap 3 is rotated transversely, and the key tooth platform 15 transitions to the transverse portion 312. At this time, the connection between the dust cap 3 and the connector body 1 is completed, and the movement of the dust cap 3 in the radial direction is effectively limited. Furthermore, in order to prevent the dust cap 3 from accidentally rotating laterally, causing the key tooth platform 15 to accidentally rotate back and disengage from the transverse portion 312 and loosen the connection between the dust cap 3 and the connector body 1, the transverse portion 312 is connected with a notch 313, and the key tooth platform 15 is embedded in the transverse portion 312 and then enters the notch 313. On the contrary, when it is necessary to separate the dust cap 3 and the connector body 1, the key tooth platform 15 is first moved out of the notch 313, and the dust cap 3 is moved laterally so that the key tooth platform 15 enters the radial portion 311, and then the dust cap 3 is moved radially, so that the dust cap 3 and the connector body 1 can be easily separated, and the operation is simple, convenient and fast. More preferably, the diameters of the two key tooth platforms 15 can be designed to be one large and one small, and the corresponding two key tooth grooves 31 are also one large and one small, which can play a certain fool-proof role and can connect the dust cap 3 and the connector body 1 more quickly and accurately.

[0035] In addition, the present solution also provides a second embodiment of the connection between the dust cap 3 and the connector body 1, such as Fig.12As shown, the connector body 1 and the dust cap 3 are connected via a threaded structure, that is, a first thread may be provided on the outer wall of the connector body 1, and a second thread may be provided on the inner wall of the dust cap 3. After the dust cap 3 is radially sleeved on the ceramic ferrule 21, the dust cap 3 is directly rotated so that the first thread and the second thread are matched and connected, thereby fixing the dust cap 3 and the connector body 1.

[0036] As another embodiment of the connection between the dust cap 3 and the connector body 1 , the connector body 1 and the dust cap 3 can also be connected in a snap-fit ​​manner.

[0037] When the connector body 1 is being threaded, the front end of the dust cap 3 is connected to the traction component 32 through a universal member, and the traction component 32 is provided with a hole 323 for fixing the traction rope. Specifically, the universal member includes a rotating head 314 provided at the front end of the dust cap 3, a slot 321 provided inside the traction component 32, and a third opening 322 provided on the outer wall of the traction component 32, the slot 321 is communicated with the third opening 322, the slot 321 and the third opening 322 both extend forward from the rear end of the traction component 32, the rotating head 314 is embedded in the slot 321, and a positioning block 324 for positioning the rotating head 314 is provided on the slot 321, and the positioning block 324 is arranged along the inner wall of the slot 321 and extends to the third opening 322. Furthermore, in order to more firmly connect the dust cap 3 and the traction component 32, the traction component 32 may include a clamp 325 and an adjustment component 326, such as Fig.10As shown, the slot 321 and the third opening 322 are both provided on the clamp 325. The third opening 322 is preferably wide at the front and narrow at the back. The width of the wide position of the third opening 322 is greater than the width of the rotating head 314, while the width of the narrow position of the third opening 322 is less than the width of the rotating head 314. The positioning block 324 is provided corresponding to the narrow position of the third opening 322. The hole 323 is provided at the front end of the adjusting member 326. The tail of the adjusting member 326 is embedded in the slot 321 and is threadedly connected to the front end of the slot 321. The tail of the adjusting member 326 controls the position of the rotating head 314 in the slot 321. Specifically, before the clamping member 325 and the rotating head 314 are connected, the adjusting member 326 is first screwed in the direction away from the narrow mouth position of the third opening 322, so that the wide mouth position of the third opening 322 has enough space, and the rotating head 314 can enter the clamping slot 321 from the wide mouth position of the third opening 322, and then the adjusting member 326 is screwed in the opposite direction again. During the screwing process of the adjusting member 326, the adjusting member 326 drives the rotating head 314 to move toward the narrow mouth position of the third opening 322. At this time, the adjusting member 326 blocks part of the wide mouth position of the third opening 322, so that the rotating head 314 can be firmly connected with the clamping member 325, and cooperate with the positioning block 324. The positioning block 324 can prevent the rotating head 314 and the clamping member 325 from having axial position movement, thereby ensuring that the rotating head 314 can be fixed in the clamping slot 321 and preventing the rotating head 314 from falling out. The relative position of the rotating head 314 can be controlled by the degree of twisting of the adjusting member 326, so as to stabilize the connection between the entire traction component 32 and the dust cap 3. In addition, the clamping member 325 can be designed to be relatively short and small, which is more suitable for installation in the pipeline. After the rotating head 314 is connected to the clamping member 325, the adjusting member 326 is twisted in the direction of the clamping slot 321. Preferably, the rotating head 314 is a spherical structure, so that the dust cap 3 and the traction component 32 can be rotated at multiple angles, which can adapt to the complex environment of better pipe threading.

[0038] In addition, when the structure inside the wall through which the optical fiber connector needs to pass is relatively simple, the traction component 32 may not be required, and the hole 323 for fixing the traction rope can be directly provided on the dust cap 3 .

[0039] When the connector body 1 needs to be connected to the external adapter 4 after passing through the pipe, the dust cap 3 and the traction component 32 are removed at this time. The external adapter 4 includes an inner fixed shell 41 and an outer fixed shell 42. Preferably, a raised clamping platform 16 is provided on the outer wall of the connector body 1. The clamping platform 16 is provided at a position where the key tooth platform 15 is rotated 90 degrees horizontally. A connecting groove 411 surrounding the ceramic ferrule 21 is provided inside the tail end of the inner fixed shell 41. An opening 412 communicating with the connecting groove 411 is provided on the outer wall of the inner fixed shell 41. When the inner fixed shell 41 is connected to the connector body 1, the inner fixed shell 41 is moved radially to sleeve the ceramic ferrule 21 inside until the clamping platform 16 is embedded in the clamping hole to fix the radial position of the inner fixed shell 41, so that the fixed connection between the inner fixed shell 41 and the connector body 1 can be completed, and the outer fixed shell 42 is sleeved on the outside of the inner fixed shell 41. Further, a first raised platform 13 is provided on one side of the outer wall of the connector body 1, and a first opening 413 communicating with the connection groove 411 is provided on the inner fixed shell 41. When the connector body 1 is connected to the inner fixed shell 41, the first raised platform 13 is embedded in the first opening 413, and the inner fixed shell 41 and the connector body 1 are connected to each other. At the same time, the first raised platform 13 and the first opening 413 cooperate with each other to play a foolproof role, and also have a certain indication role, which is specifically manifested in: in the grinding process after the entire optical fiber assembly 2 is installed in the connector body 1, the first raised platform 13 can be used as the angle reference anchor point of the ceramic ferrule 21, and the ceramic ferrule 21 is ground according to the reference anchor point reference guide, which can play the role of indicating the grinding tilt angle direction, thereby improving the assembly efficiency. Preferably, in this embodiment, there are two first openings 413, and after one of the first openings 413 is matched with the first raised platform 13, the other first opening 413 is matched with the key tooth platform 15. Specifically, when the inner fixed shell 41 is connected to the connector body along the radial direction, the key tooth platform 15 can be embedded in another first opening 413, and the cooperation between the two first openings 413, the first protruding platform 13 and the key tooth platform 15 respectively can prevent the inner fixed shell 41 and the connector body 1 from generating lateral circumferential rotation to a certain extent, thereby achieving the stability of the contact between the end face of the ceramic ferrule 21 and the entire external adapter 4.

[0040] Preferably, in order to better distinguish the two first openings 413, the width of the first opening 413 matched with the first protruding platform 13 can be greater than the width of the other first opening 413 matched with the key tooth platform 15, so as to achieve accurate and rapid installation of the inner fixing shell 41 and the connector body 1. At the same time, the two first openings 413 with one large and one small diameters respectively match the two key tooth platforms 15 with one large and one small diameters respectively, which further enhances the indication function and greatly improves the assembly efficiency.

[0041] As another embodiment of the foolproof connection between the inner fixing shell 41 and the connector body 1, at least one second opening 14 communicating with the mounting groove 11 is provided on the side wall at the front end of the connector body 1, and the second opening 14 specifically extends radially backward from the notch position of the mounting groove 11, and a second protruding platform 414 embedded in another second opening 14 is provided on the inner wall of the inner fixing shell 41. Fig. 9 As shown, the inner fixing shell 41 is prevented from being installed in the wrong direction, and the inner fixing shell 41 is blindly inserted, thereby improving the installation efficiency. Preferably, in order to achieve the function of foolproof connection between the optical fiber tail handle 22 and the connector body 1, two second openings 14 are provided, and the positions of the two second openings 14 are arranged opposite to each other. After one second opening 14 is matched with the second raised platform 414, a foolproof component embedded in the other second opening 14 is provided on the outer wall of the optical fiber tail handle 22. The foolproof component 221 serves as a foolproof opening mechanism of the optical fiber tail handle 22 in the radial direction to ensure the end face accuracy of the ceramic ferrule 21.

[0042] Furthermore, a reinforcing platform 17 is provided on the connector body 1, and the reinforcing platform 17 is provided behind the clamping platform 16. When the inner fixing shell 41 is clamped with the connector body 1, the rear end of the inner fixing shell 41 abuts against the reinforcing platform 17. The reinforcing platform 17 is used to support and reinforce the inner fixing shell 41, so that the connector body 1 and the inner fixing shell 41 can be more firmly matched.

[0043] Furthermore, the connector body 1 is also provided with a direction indicating platform 18, which is arranged behind the reinforcing platform 17. The direction indicating platform 18 is a plane and extends backward from the position of the reinforcing platform 17. The function of the direction indicating platform 18 is to ensure that the entire optical fiber assembly 2 is correctly installed in the circumferential direction. During assembly, the direction indicating platform 18 is used to confirm that the second opening 14 on the same side and the foolproof component 221 on the optical fiber tail handle 22 are aligned, and the other second opening 14 left is used to cooperate with the second raised platform 414 in the inner fixed shell 41, so as to facilitate fast and accurate installation on site. Similarly, the direction indicating platform 18 can also serve as the angle reference anchor point of the ceramic ferrule 21, and the ceramic ferrule 21 is ground according to the reference guide of the anchor point to improve the accuracy and efficiency of assembly production.

[0044] To sum up, on the one hand, the cooperation between the fastening structure 12 and the mounting groove 11 can effectively protect the optical fiber in the optical fiber assembly 2 and the ceramic ferrule 21. On the other hand, the cooperation between the second opening 14 and the anti-foolproof component 221 and the setting of the anti-foolproof platform enable the entire optical fiber connector to be provided with multiple anti-foolproof designs, making the construction and installation process of the entire optical fiber connector more scientific and quick.

[0045] The optical cable assembly 5 may specifically include a crimping ring 51, a heat shrink tube 52 and an optical cable body 53. A fixed optical cable platform 19 is provided at the rear end of the connector body 1. The fixed optical cable platform 19 has an uneven surface. The shape of the fixed optical cable platform 19 may be concave and convex, or criss-crossed. The purpose is that when the crimping ring 51 and the heat shrink tube 52 are connected to the fixed optical cable platform 19 at the same time, the friction between the fixed optical cable platform 19 and the crimping ring 51 and the heat shrink tube 52 can be increased, so that the connection of the optical cable body 53 is more stable, thereby ensuring the characteristics of the entire optical fiber connector.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A through-tube optical fiber connector, comprising a centrally connected connector body (1), an optical fiber assembly (2) being arranged inside the connector body (1), a dust cap (3) or an external adapter (4) surrounding the optical fiber assembly (2) being detachably arranged at the front end of the connector body (1), the optical fiber assembly (2) comprising a ceramic ferrule (21), an optical fiber tail handle (22) and a tail handle spring (23) connected in sequence, an optical cable assembly (5) being connected at the rear end of the connector body (1), characterized in that: A mounting groove (11) is provided in the connector body (1); one end of the tail handle spring (23) abuts against the bottom of the mounting groove (11), and the other end abuts against the optical fiber tail handle (22); a fastening structure (12) for limiting the position of the optical fiber tail handle (22) is provided on the mounting groove (11); the ceramic ferrule (21) extends out of the mounting groove (11) through the fastening structure (12) and extends into the dust cap (3) or the external adapter (4).

2. The fiber optic connector according to claim 1, characterized in that: The fastening structure (12) is a protrusion arranged inwardly of the installation groove (11), and the protrusion and the tail handle spring (23) cooperate to control the relative position of the optical fiber tail handle (22) in the radial direction of the installation groove (11).

3. The through-tube optical fiber connector according to claim 1, characterized in that: The external adapter (4) comprises an inner fixing shell (41) and an outer fixing shell (42); a protruding clamping platform (16) is provided on the outer wall of the connector body (1); a connecting groove (411) surrounding the ceramic ferrule (21) is provided inside the rear end of the inner fixing shell (41); an opening (412) communicating with the connecting groove (411) is provided on the outer wall of the inner fixing shell (41); when the inner fixing shell (41) is connected to the connector body (1), the clamping platform (16) is embedded in the clamping hole, and the outer fixing shell (42) is covered on the outside of the inner fixing shell (41).

4. The through-tube optical fiber connector according to claim 3, characterized in that: A first raised platform (13) is provided on the outer wall of the connector body (1), and a first opening (413) is provided on the inner fixed shell (41). When the connector body (1) is connected to the inner fixed shell (41), the first raised platform (13) is embedded in the first opening (413).

5. The fiber optic connector according to claim 3, characterized in that: At least one second opening (14) communicating with the mounting groove (11) is provided on the side wall at the front end of the connector body (1), and an anti-fouling component (221) embedded in one of the second openings (14) is provided on the outer wall of the optical fiber tail handle (22).

6. The through-tube optical fiber connector according to claim 5, characterized in that: Two second openings (14) are provided, and a second raised platform (414) embedded in another second opening (14) is provided on the inner wall of the inner fixed shell (41).

7. The through-tube optical fiber connector according to claim 3, characterized in that: The connector body (1) is also provided with a reinforcing platform (17), which is arranged behind the clamping platform (16). When the inner fixing shell (41) is clamped with the connector body (1), the rear end of the inner fixing shell (41) abuts against the reinforcing platform (17).

8. The through-tube optical fiber connector according to claim 1, characterized in that: The rear end of the dust cap (3) is connected to the connector body (1), and the front end of the dust cap (3) is connected to a traction component (32) via a universal joint. The traction component (32) is provided with a hole (323) for fixing a traction rope.

9. The through-tube optical fiber connector according to claim 8, characterized in that: The universal member comprises a rotating head (314) arranged at the front end of the dust cap (3), a slot (321) arranged inside the traction component (32), and a third opening (322) arranged on the outer wall of the traction component (32); the slot (321) is in communication with the third opening (322); the rotating head (314) is embedded in the slot (321); a positioning block (324) for positioning the rotating head (314) is provided on the slot (321); the positioning block (324) is arranged along the inner wall of the slot (321) and extends to the third opening (322).

10. The through-tube optical fiber connector according to claim 9, characterized in that: The traction component (32) comprises a clamping member (325) and an adjusting member (326); the clamping slot (321) and the third opening (322) are both arranged on the clamping member (325); the tail of the adjusting member (326) is embedded in the clamping slot (321) and is threadedly connected to the front end of the clamping slot (321); the tail of the adjusting member (326) controls the position of the rotating head (314) in the clamping slot (321).

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