Optical fiber connector

Abstract

The present application relates to optical fiber communication physical connection technology, and discloses an optical fiber connector, comprising a main body, a sleeve ring and a sleeve pipe, the main body is provided with a connecting groove, a guide structure and a guide structure, the sleeve ring is provided with a first connecting part, the guide structure is used for guiding the first connecting part and the connecting groove cooperation, thereby limiting the axial movement between the sleeve ring and the main body, and the sleeve pipe is provided with a matching part, the matching part is matched with the guide structure, thereby limiting the circumferential rotation between the sleeve pipe and the main body, and then the cooperation between the second connecting part on the sleeve ring and the connecting track on the sleeve pipe is utilized, not only the sleeve ring and the sleeve pipe are connected, but also the circumferential rotation between the sleeve ring and the sleeve pipe is limited. Not only the axial and circumferential limiting between the sleeve ring, the sleeve pipe and the main body is realized, the connection stability and connection precision of the optical fiber connector are ensured, but also the assembly of each component in the optical fiber connector is more convenient, and the convenience of the optical fiber connector can be improved.

Description

Technical Field

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

[0002] Fiber optic connectors are used to quickly connect two optical fibers, enabling continuous optical signals and forming an optical path. Typically, a fiber optic connector consists of multiple components, assembled through the mating and connection of these components. Because fiber optic connectors require extremely high connection precision, assembly often requires a considerable amount of time to ensure all components are properly assembled. Improper assembly can significantly affect the connection accuracy of the fiber optic connector.

[0003] Therefore, how to improve the convenience of fiber optic connectors while ensuring their connection stability and accuracy has become an urgent problem to be solved. Summary of the Invention

[0004] This invention provides an optical fiber connector that improves the convenience of optical fiber connectors while also ensuring connection stability and accuracy.

[0005] In a first aspect, the present invention provides an optical fiber connector, comprising a body, a collar, and a sleeve, wherein the collar and sleeve are fitted onto the body and detachably connected to the body, wherein...

[0006] The outer side wall of the main body is provided with a connecting groove and a guiding structure, and the inner side wall of the collar is provided with a first connecting part that matches the connecting groove. The guiding structure is used to guide the first connecting part to cooperate with the connecting groove to restrict the axial movement between the collar and the main body.

[0007] A guide structure is provided on the outer side wall of the main body, and a mating part is provided on the inner side wall of the sleeve. The mating part is used to cooperate with the guide structure to restrict the circumferential rotation between the sleeve and the main body.

[0008] The collar is also provided with a second connecting part, and the sleeve is provided with a connecting rail. The second connecting part is used to cooperate with the connecting rail to connect the collar and the sleeve, and to restrict the circumferential rotation between the collar and the sleeve.

[0009] Optionally, a first limiting part and a second limiting part are provided on the outer side wall of the main body, wherein the first limiting part and the second limiting part are both protruding structures, and the first limiting part and the second limiting part are spaced apart by a preset distance to form a connecting groove.

[0010] Optionally, the guide structure is a notch of a preset length provided on the second limiting part.

[0011] Optionally, the width of the first connecting part is greater than the width of the connecting groove, and the length of the first connecting part is not greater than the length of the guide structure; the first connecting part enters the connecting groove through the guide structure and abuts against the inner wall of the connecting groove to restrict the axial movement between the collar and the main body.

[0012] Optionally, one end of the connecting rail is provided with an opening, and the opening of the connecting rail is set from the end face of the sleeve near the collar:

[0013] When the second connecting part mates with the connecting rail, the second connecting part fits against the connecting rail and moves from the opening of the connecting rail to the end to connect the collar and the sleeve.

[0014] Optionally, the connecting track section is curved.

[0015] Optionally, a limiting platform is also provided inside the collar. The limiting platform is a ring platform. When the collar is connected to the sleeve, the end face of the sleeve near the collar abuts against the limiting platform. The sleeve covers the main body and the sleeve is at least partially covered by the collar.

[0016] Optionally, an external thread is provided on the outer side wall of the main body along the circumferential direction, and a guide structure is also provided on the external thread.

[0017] Optionally, it also includes: a dust cap, the inner wall of which is provided with an internal thread that matches the external thread.

[0018] Optionally, it also includes: a fastener, wherein an annular protrusion is provided on the outer wall of the sleeve, the fastener is fitted over the outer side of the collar and the sleeve, and one end of the fastener abuts against the annular protrusion.

[0019] Optionally, the main body is a hollow structure for passing through optical fiber cables, wherein: the main body is also provided with a viewing window, which communicates with the cavity inside the main body to confirm the status of the optical fiber cables located inside the main body.

[0020] This invention discloses an optical fiber connector, comprising a body, a collar, and a sleeve. The body is provided with a connecting groove, a guiding structure, and a guiding structure. The collar is provided with a first connecting part. The guiding structure guides the first connecting part to engage with the connecting groove, thereby restricting the axial movement between the collar and the body. The sleeve is provided with a mating part, which engages with the guiding structure to restrict the circumferential rotation between the sleeve and the body. Furthermore, by utilizing the engagement between a second connecting part on the collar and a connecting track on the sleeve, not only are the collar and the sleeve connected, but the circumferential rotation between the collar and the sleeve is also restricted. In this solution, the axial movement between the collar and the main body is first restricted by the cooperation between the first connecting part and the connecting groove. Then, the axial rotation between the sleeve and the main body is restricted by the cooperation between the mating part and the guide structure. Finally, the circumferential movement between the collar and the sleeve is restricted by the cooperation between the collar and the sleeve, thereby restricting the circumferential rotation between the collar and the main body, as well as the axial movement between the sleeve and the main body. This not only achieves axial and circumferential positioning between the collar, the sleeve, and the main body, ensuring the connection stability and accuracy of the fiber optic connector, but also makes the assembly of each component in the fiber optic connector more convenient, thus improving the convenience of the fiber optic connector. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an exploded view of an optical fiber connector provided in an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the structure of the main body in one direction of the optical fiber connector provided in the embodiments of this application;

[0024] Figure 3 This application provides a schematic diagram of the structure of the main body of the optical fiber connector in another direction according to an embodiment;

[0025] Figure 4 This is a schematic diagram of the ferrule structure in the fiber optic connector provided in the embodiments of this application;

[0026] Figure 5 This is a schematic diagram of the structure of the sleeve in the fiber optic connector provided in the embodiments of this application;

[0027] Figure 6 This is another exploded structural diagram of the fiber optic connector provided in the embodiments of this application. Detailed Implementation

[0028] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail, but well-known methods, processes, and components are not described in detail in order to avoid obscuring the essence of the present invention.

[0029] Furthermore, those skilled in the art should understand that the accompanying drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0030] Unless the context explicitly requires it, the words "comprising," "including," and similar terms throughout the specification and claims should be interpreted as encompassing rather than being exclusive or exhaustive; that is, meaning "including but not limited to."

[0031] In the description of this invention, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0032] Please see Figure 1 , Figure 1 This is an exploded view of an optical fiber connector according to an embodiment of this application. The optical fiber connector includes a connector head 1, a body 2, a collar 3, a sleeve 4, a fixing member 5, and a dust cap 6. The collar 3 and the sleeve 4 are both fitted onto the body 2 and are detachably connected to the body 2.

[0033] Connector 1 is connected to body 2. In practice, connector 1 can be detachably connected to body 2 to facilitate the replacement of different types of connector 1; connector 1 can also be fixedly connected to body 2. In actual implementation, different types of connectors can also be selected according to the different third-party fiber optic connection equipment being adapted.

[0034] Please see Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of the main body in one direction of the fiber optic connector provided in the embodiments of this application. Figure 3 This application provides a schematic diagram of the structure of the main body of the optical fiber connector in another direction.

[0035] In one embodiment, such as Figure 2As shown, a viewing window 27 is provided at one end of the main body 2 near the connector 1. The viewing window 27 is located on the peripheral side of the main body 2 and communicates with the cavity inside the main body 2. The viewing window 27 is used to check the status of the optical fiber cable located inside the main body 2. For example, when the user connects the optical fiber cable to the connector 1, they can observe the status of the optical fiber cable inside the cavity of the main body 2 through the viewing window 27 to check whether the optical fiber cable is bent, deformed, or otherwise damaged.

[0036] In some embodiments, the fiber optic connector further includes a window cover that matches the shape and size of the window 27. When the window cover is connected to the window 27, it can be tightly connected to the window 27, thereby sealing the window 27. In specific implementations, the window cover and the window 27 can be connected by a snap-fit ​​or by other means that can achieve a tight connection.

[0037] The window cover is at least partially a perspective structure, and / or the color of the window cover is different from the color of the main body 2.

[0038] In some embodiments, the viewing window cover is at least partially transparent, allowing the user to check the status of the fiber optic cable connected to the connector 1 through the viewing window cover. After the fiber optic cable is connected to the connector 1, the user can observe the status of the fiber optic cable located in the cavity of the main body 2 through the transparent portion of the viewing window cover, and check whether the fiber optic cable is bent, deformed, or otherwise damaged.

[0039] In some embodiments, the color of the window cover can be different from the color of the main body 2. For example, if the main body 2 is black, the window cover may be red. Setting the window cover to a different color from the main body 2 facilitates the connection between the fiber optic connector and the female end, and serves as an identification function.

[0040] In some embodiments, the cover glass may also be a structure with a partially transparent structure and a color different from that of the main body 2. It is understood that the transparent portion of the cover glass may also have a color different from that of the main body 2, and the transparent portion of the cover glass only needs to have a certain degree of transparency, not limited to a white transparent structure.

[0041] like Figure 2 and Figure 3 As shown, a connecting groove 24 and a guide structure 25 are provided on the outer side wall of the main body 2.

[0042] In one embodiment, a first limiting part 21 and a second limiting part 22 are provided on the outer side wall of the main body 2. Both the first limiting part 21 and the second limiting part 22 are protruding structures, and the first limiting part 21 and the second limiting part 22 are spaced apart by a preset distance to form a connecting groove 24. The guide structure 25 provided on the outer side wall of the main body 2 is a notch of a preset length provided on the second limiting part 22.

[0043] In practice, the first limiting part 21 can be a complete annular protrusion or it can have a notch. There can be multiple guide structures 25 on the main body 2, that is, multiple notches of preset length can be provided on the second limiting part 22. When there are multiple notches, the length of each notch can be the same or different.

[0044] Please see Figure 4 , Figure 4 This is a schematic diagram of the ferrule in the fiber optic connector provided in an embodiment of this application.

[0045] like Figure 4 As shown, the inner sidewall of the collar 3 is provided with a first connecting part 31 that matches the connecting groove 24. The guide structure 25 is used to guide the first connecting part 31 to cooperate with the connecting groove 24 to restrict the axial movement between the collar 3 and the main body 2.

[0046] In the specific implementation process, when the collar 3 is fitted onto the main body 2, the first connecting part 31 on the collar 3 enters the connecting groove 24 through the guide structure 25. The first connecting part 31 cooperates with the connecting groove 24, so that the collar 3 cannot move axially on the main body 2, but can only rotate circumferentially on the main body 2 with the connecting groove 24 as the track.

[0047] In one embodiment, the width of the first connecting part 31 is greater than the width of the connecting groove 24, and the length of the first connecting part 31 is not greater than the length of the guide structure 25; the first connecting part 31 enters the connecting groove 24 through the guide structure 25 and abuts against the inner wall of the connecting groove 24 to restrict the axial movement between the collar 3 and the main body 2.

[0048] In the specific implementation process, the width of the first connecting part 31 being greater than the width of the connecting groove 24 means that the width of the first connecting part 31 is equivalent to the width of the connecting groove 24, and the width of the first connecting part 31 is slightly greater than the width of the connecting groove 24, so that the first connecting part 31 can enter the connecting groove 24 and cooperate with the connecting groove 24. It does not mean that the width of the first connecting part 31 is exactly the same as the width of the connecting groove 24. It is understood that a certain error is allowed between the width of the first connecting part 31 and the width of the connecting groove 24.

[0049] The length of the first connecting part 31 refers to the length of the main body 2 circumferentially upward. Only when the length of the first connecting part 31 is less than or equal to the length of the guide structure 25 can the first connecting part 31 pass through the guide structure 25 and enter the connecting groove 24.

[0050] When the collar 3 is fitted onto the main body 2, the first connecting part 31 on the collar 3 enters the connecting groove 24 through the guide structure 25 and abuts against the inner wall of the connecting groove 24. Thus, the collar 3 is fixed by the snap-fit ​​relationship between the connecting groove 24 and the first connecting part 31, so that the collar 3 cannot move axially on the main body 2, but can only rotate circumferentially on the main body 2.

[0051] It should be noted that the connecting groove 24 is not necessarily a recessed structure. When the connecting groove 24 is a recessed structure, the first connecting part 31 is a protruding structure, and when the connecting groove 24 is a protruding structure, the first connecting part is a recessed structure.

[0052] Please see Figure 5 , Figure 5 This is a schematic diagram of the sleeve structure in the fiber optic connector provided in the embodiment of this application.

[0053] like Figure 3 As shown, a guide structure 26 is also provided on the outer side wall of the main body 2.

[0054] like Figure 5 As shown, a mating part 41 is provided on the inner wall of the sleeve 4. The mating part 41 is used to cooperate with the guide structure 26 to restrict the circumferential rotation between the sleeve 4 and the main body 2.

[0055] When the sleeve 4 is fitted onto the main body 2, the guide structure 26 on the main body 2 guides the sleeve 4. The sleeve 4 is guided and positioned by the cooperation between the guide structure 26 and the mating part 41, so that the sleeve 4 cannot rotate circumferentially on the main body 2.

[0056] In specific implementation, the guide structure 26 can be a protrusion or a groove; it can be continuous or discontinuous, and the specific structure of the guide structure 26 is not limited here. It can be understood that when the guide structure 26 is a protrusion, the mating part 41 is a groove; when the guide structure 26 is a groove, the mating part 41 is a protrusion.

[0057] like Figure 3 and Figure 4 As shown, the collar 3 is also provided with a second connecting part 32, and the sleeve 4 is provided with a connecting rail 42. The second connecting part 32 is used to cooperate with the connecting rail 42 to connect the collar 3 and the sleeve 4, and to restrict the circumferential rotation between the collar 3 and the sleeve 4.

[0058] When both the collar 3 and the sleeve 4 are fitted onto the main body 2, the sleeve 4 is partially covered by the collar 3. The connecting track 42 is located on the portion of the sleeve 4 covered by the collar 3. When the second connecting part 32 engages with the connecting track 42, the collar 3 and the sleeve 4 are connected together. Since the collar 3 is axially limited relative to the main body 2, and the collar 3 is connected to the sleeve 4, this also means that the sleeve 4 is axially limited relative to the main body 2. Similarly, since the sleeve 4 is circumferentially limited relative to the main body 2, and the collar 3 is connected to the sleeve 4, the collar 3 is also circumferentially limited relative to the main body 2. Thus, both the collar 3 and the sleeve 4 are limited relative to the main body 2 in both the circumferential and axial directions, achieving a tight connection between the main body 2, the collar 3, and the sleeve 4.

[0059] In one embodiment, such as Figure 3 As shown, a limiting platform 33 is also provided inside the collar 3. The limiting platform 33 is a ring platform. When the collar 3 is connected to the sleeve 4, the end face of the sleeve 4 near the collar 3 abuts against the limiting platform 33. The sleeve 4 covers the main body 2 and the sleeve 4 is at least partially covered by the collar 3.

[0060] A ring-shaped limiting platform 33 is provided inside the collar 3. When both the collar 3 and the sleeve 4 are covered on the main body 2, the sleeve 4 is partially covered by the collar 3. The collar 3 and the sleeve 4 are connected by the cooperation between the second connecting part 32 and the connecting track 42. At this time, the end face of the sleeve 4 close to the collar 3, that is, the end face of the sleeve 4 inside the collar 3, abuts against the limiting platform 33.

[0061] In one embodiment, such as Figure 4 As shown, one end of the connecting track 42 is provided with an opening, and the opening of the connecting track 42 is provided from the end face of the sleeve 4 near the collar 3; when the second connecting part 32 is engaged with the connecting track 42, the second connecting part 32 fits against the connecting track 42 and moves from the opening of the connecting track 42 to the end to connect the collar 3 and the sleeve 4.

[0062] One end of the connecting rail 42 is provided with an opening, and the opening of the connecting rail 42 starts from the end face of the sleeve 4. When the second connecting part 32 is engaged with the connecting rail 42, the second connecting part 32 can directly enter the connecting rail 42 from the opening of the connecting rail 42 until it moves to the end of the rail. During this process, the second connecting part 32 always fits the connecting rail 42 to ensure the tightness of the connection between the collar 3 and the sleeve 4.

[0063] In practice, the connecting track 42 can be either a concave or convex track. When the connecting track 42 is a concave track, the second connecting part 32 is a convex structure; when the connecting track 42 is a convex track, the second connecting part 32 is a concave structure.

[0064] In one embodiment, the connecting track 42 is arc-shaped. In practice, the angle of the arc-shaped portion of the connecting track 42 is not limited.

[0065] When the main body 2, collar 3 and sleeve 4 are all securely connected, although the collar 3 and sleeve 4 are limited in both the circumferential and axial directions, a certain degree of relative rotation can still occur between the collar 3 and sleeve 4 within the stroke of the connecting track 42. Therefore, by setting part of the connecting track 42 as an arc-shaped structure, the second connecting part 32 will not fall off on its own without external force after entering the connecting track 42, thereby increasing the tensile strength of the fiber optic connector and improving the connection stability and connection accuracy of the fiber optic connector.

[0066] In one embodiment, such as Figure 1 As shown, the fiber optic connector also includes a fixing member 5. An annular protrusion 43 is provided on the outer wall of the sleeve 4. The fixing member 5 covers the outer side of the collar 3 and the sleeve 4, and one end of the fixing member 5 abuts against the annular protrusion 43. In specific implementation, the end of the fixing member 5 that abuts against the annular protrusion 43 is provided with an external thread for threaded connection with a third-party fiber optic connection device, thereby achieving a secure connection between the fiber optic connector and the third-party fiber optic connection device.

[0067] In one embodiment, such as Figure 2 As shown, an external thread 23 is provided on the outer side wall of the main body 2 along the circumferential direction, and a guide structure 25 is also provided on the external thread 23.

[0068] In practice, the guide structure 25 on the external thread 23 is the same as the guide structure 25 on the main body 2. That is, when the guide structure 25 is a notch, the external thread 23 also has a notch. However, it is understood that the length of the guide structure 25 on the main body 2 and the length of the guide structure 25 on the external thread 23 can be different, but the length of the guide structure 25 on the external thread 23 must be greater than or equal to the length of the guide structure 25 on the main body 2.

[0069] Please see Figure 6 , Figure 6 This is another exploded structural diagram of the fiber optic connector provided in the embodiments of this application.

[0070] like Figure 6 As shown, the fiber optic connector also includes a dust cap 6, the inner wall of which is provided with an internal thread 61, which matches the external thread 23.

[0071] When the fiber optic connector does not need to be assembled and used, the collar 3 and sleeve 4 can be removed from the main body 2, and the dust cap 6 can be replaced. The dust cap 6 and the main body 2 are fastened together by the internal thread 61 on the dust cap 6 and the external thread 23 on the main body 2, so as to prevent dust, flying lint and other impurities from entering the fiber optic connector and affecting the subsequent use of the fiber optic connector.

[0072] In one embodiment, such as Figure 1 and Figure 6 As shown, the fiber optic connector also includes a tail sleeve 7. The tail sleeve 7 is detachably connected to the end of the body 2 away from the connector head 1, and the tail sleeve 7 has a hollow structure for passing through the fiber optic cable.

[0073] This invention discloses an optical fiber connector, comprising a body, a collar, and a sleeve. The body is provided with a connecting groove, a guiding structure, and a guiding structure. The collar is provided with a first connecting part. The guiding structure guides the first connecting part to engage with the connecting groove, thereby restricting the axial movement between the collar and the body. The sleeve is provided with a mating part, which engages with the guiding structure to restrict the circumferential rotation between the sleeve and the body. Furthermore, by utilizing the engagement between a second connecting part on the collar and a connecting track on the sleeve, not only are the collar and the sleeve connected, but the circumferential rotation between the collar and the sleeve is also restricted. In this solution, the axial movement between the collar and the main body is first restricted by the cooperation between the first connecting part and the connecting groove. Then, the axial rotation between the sleeve and the main body is restricted by the cooperation between the mating part and the guide structure. Finally, the circumferential movement between the collar and the sleeve is restricted by the cooperation between the collar and the sleeve, thereby restricting the circumferential rotation between the collar and the main body, as well as the axial movement between the sleeve and the main body. This not only achieves axial and circumferential positioning between the collar, the sleeve, and the main body, ensuring the connection stability and accuracy of the fiber optic connector, but also makes the assembly of each component in the fiber optic connector more convenient, thus improving the convenience of the fiber optic connector.

[0074] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An optical fiber connector, characterized in that, The system includes a main body (2), a collar (3), and a sleeve (4). The collar (3) and the sleeve (4) are fitted onto the main body (2) and are detachably connected to the main body (2). The outer side wall of the main body (2) is provided with a connecting groove (24) and a guide structure (25). The inner side wall of the collar (3) is provided with a first connecting part (31) that matches the connecting groove (24). The guide structure (25) is used to guide the first connecting part (31) to cooperate with the connecting groove (24) to restrict the axial movement between the collar (3) and the main body (2). A guide structure (26) is provided on the outer side wall of the main body (2), and a mating part (41) is provided on the inner side wall of the sleeve (4). The mating part (41) is used to cooperate with the guide structure (26) to restrict the circumferential rotation between the sleeve (4) and the main body (2). The collar (3) is also provided with a second connecting part (32), and the sleeve (4) is provided with a connecting track (42). The connecting track (42) is partially arc-shaped. The second connecting part (32) is used to cooperate with the connecting track (42) to connect the collar (3) and the sleeve (4) and restrict the circumferential rotation between the collar (3) and the sleeve (4). The collar (3) is also provided with a limiting platform (33), which is a ring platform. When the collar (3) is connected to the sleeve (4), the end face of the sleeve (4) near the collar (3) abuts against the limiting platform (33). The sleeve (4) covers the main body (2) and the sleeve (4) is at least partially covered by the collar (3).

2. The fiber optic connector according to claim 1, characterized in that, The outer side wall of the main body (2) is provided with a first limiting part (21) and a second limiting part (22), wherein the first limiting part (21) and the second limiting part (22) are both protruding structures, and the first limiting part (21) and the second limiting part (22) are spaced apart by a preset distance to form a connecting groove (24).

3. The fiber optic connector according to claim 2, characterized in that, The guide structure (25) is a notch of a preset length provided on the second limiting part (22).

4. The fiber optic connector according to claim 1, characterized in that, The width of the first connecting part (31) is greater than the width of the connecting groove (24), and the length of the first connecting part (31) is not greater than the length of the guide structure (25); the first connecting part (31) enters the connecting groove (24) through the guide structure (25) and abuts against the inner wall of the connecting groove (24) to restrict the axial movement between the collar (3) and the main body (2).

5. The fiber optic connector according to claim 1, characterized in that, One end of the connecting track (42) is provided with an opening, and the opening of the connecting track (42) is provided from the end face of the sleeve (4) near the collar (3); When the second connecting part (32) engages with the connecting rail (42), the second connecting part (32) fits against the connecting rail (42) and moves from the opening of the connecting rail (42) to the end to connect the collar (3) and the sleeve (4).

6. The fiber optic connector according to claim 1, characterized in that, The outer side wall of the main body (2) is provided with an external thread (23) along the circumferential direction, and the external thread (23) is also provided with the guide structure (25).

7. The fiber optic connector according to claim 6, characterized in that, Also includes: Dust cap (6), the inner wall of the dust cap (6) is provided with an internal thread (61), the internal thread (61) is matched with the external thread (23).

8. The fiber optic connector according to claim 1, characterized in that, Also includes: Fastener (5), An annular protrusion (43) is provided on the outer wall of the sleeve (4), and the fixing member (5) is fitted over the outer side of the collar (3) and the sleeve (4), and one end of the fixing member (5) abuts against the annular protrusion (43).

9. The fiber optic connector according to claim 1, characterized in that, The main body (2) is a hollow structure for passing through optical fiber cables, wherein: The main body (2) is also provided with a window (27), which is connected to the cavity inside the main body (2) to confirm the status of the optical fiber cable located inside the main body (2).

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