FC polarization-maintaining connector

Abstract

The utility model relates to the field of optical fiber butt joint, and the optical fiber butt joint device comprises a protection mechanism and a spring, the protection mechanism is internally provided with a clamping mechanism used for clamping and fastening an optical fiber, and one side of the clamping mechanism is provided with a guide mechanism used for guiding the optical fiber during butt joint. An optical fiber positioning mechanism used for positioning an optical fiber is arranged on one side in the protection mechanism, and a stabilizing mechanism used for stabilizing the guide mechanism is arranged on one side, away from the optical fiber positioning mechanism, of the protection mechanism. According to the FC polarization-maintaining connector, through the well-designed parts such as the protection mechanism, the spring, the clamping mechanism, the guide mechanism, the optical fiber positioning mechanism, the stabilizing mechanism, the main butt-joint mechanism and the auxiliary butt-joint mechanism, accurate clamping, stable positioning, smooth butt-joint and comprehensive protection of optical fibers are realized, and the design not only improves the stability and reliability of optical fiber connection, but also improves the utilization rate of the optical fibers. And the service life of the optical fiber is prolonged, the maintenance cost is reduced, and a powerful guarantee is provided for stable operation of an optical fiber communication system.

Description

Technical Field

[0001] This application relates to the field of fiber optic docking, and particularly to an FC polarization maintaining connector. Background Art

[0002] An FC polarization maintaining connector is a fiber optic connector with a threaded body, which combines the structural characteristics of an FC connector and the transmission characteristics of polarization maintaining fiber. The FC connector is renowned for its high stability and reliability, while the polarization maintaining fiber can effectively suppress the change of the polarization state of the optical signal. The combination of the two enables the FC polarization maintaining connector to play an important role in application scenarios that require high-precision polarization control.

[0003] However, there are still some problems with FC connectors in practical applications. Especially in the installation and docking of optical fibers, a significant problem is that during the fixing and docking process of the optical fiber inside the FC polarization maintaining connector, loosening may occur due to various factors. The loosening problem not only affects the stability and reliability of the fiber optic connection, but may also lead to a decline in the transmission quality of the optical signal and even cause communication failures. In application scenarios that require high-precision polarization control, such as fiber optic gyroscopes and high-precision fiber optic sensors, even a tiny displacement of the optical fiber may cause a significant change in the polarization state, thus affecting the overall performance of the system. Summary of the Utility Model

[0004] In order to solve the problem that during the fixing and docking process of the optical fiber inside the FC polarization maintaining connector, loosening may occur due to various factors. The loosening problem not only affects the stability and reliability of the fiber optic connection, but may also lead to a decline in the transmission quality of the optical signal and even cause communication failures. In application scenarios that require high-precision polarization control, such as fiber optic gyroscopes and high-precision fiber optic sensors, even a tiny displacement of the optical fiber may cause a significant change in the polarization state, thus affecting the overall performance of the system, this application provides an FC polarization maintaining connector.

[0005] An FC polarization maintaining connector provided by this application adopts the following technical solutions:

[0006] Preferably, an FC polarization maintaining connector includes a protection mechanism and a spring. Inside the protection mechanism, there is a clamping mechanism for clamping and fastening the optical fiber. On one side of the clamping mechanism, there is a guiding mechanism for guiding the optical fiber during docking. Inside the protection mechanism, near one side, there is an optical fiber positioning mechanism for positioning the optical fiber. On the side of the protection mechanism away from the optical fiber positioning mechanism, there is a stabilizing mechanism for stabilizing the guiding mechanism. Outside the stabilizing mechanism, there are a main docking mechanism and a secondary docking mechanism.

[0007] Preferably, the protection mechanism includes a stainless steel pipe, a counterweight is fixedly sleeved at one end near the center of the outer side of the stainless steel pipe, an external thread pipe is fixedly connected to one side of the stainless steel pipe, and a first limiting ring is fixedly sleeved at one end near the external thread pipe inside the stainless steel pipe.

[0008] Preferably, the spring is arranged at one side near the center inside the stainless steel pipe, and one end of the spring contacts one side of the first limiting ring.

[0009] Preferably, the clamping mechanism includes a first protection pipe, the first protection pipe is slidably sleeved inside the external thread pipe, a positioning block is fixedly sleeved at one end near the outer side of the first protection pipe, four clamping rods are fixedly connected in a circular arrangement at one end of the first protection pipe away from the positioning block, and a fastening sleeve is threadedly sleeved on the outer sides of the four clamping rods.

[0010] Preferably, the guiding mechanism includes a mounting block, the mounting block is sleeved inside the positioning block, and the mounting block and the positioning block are detachably connected, and a guiding pipe is fixedly sleeved at the center inside the mounting block.

[0011] Preferably, the optical fiber positioning mechanism includes a positioning sleeve, the positioning sleeve is sleeved inside the stainless steel pipe, and the positioning sleeve and the stainless steel pipe are detachably connected, an optical fiber protection sleeve is fixedly sleeved inside the positioning sleeve, an optical fiber body is slidably sleeved inside the optical fiber protection sleeve, and one section of the optical fiber protection sleeve is sleeved between the four clamping rods.

[0012] Preferably, the stabilizing mechanism includes a first internal thread pipe, the first internal thread pipe is threadedly sleeved on the outer side of the external thread pipe, and the first internal thread pipe and the external thread pipe are detachably connected, a second limiting ring is fixedly sleeved at one end near the outer side of the first internal thread pipe, a pressing plate is fixedly sleeved at one side near the second limiting ring inside the first internal thread pipe, the pressing plate and the mounting block are in mutual abutment, a central hole is penetrated and opened at the center of the pressing plate, and the guiding pipe is slidably sleeved inside the central hole.

[0013] Preferably, the main docking mechanism includes a third limiting ring, the third limiting ring is slidably sleeved on the outer side of the first internal thread pipe, and the third limiting ring and the first internal thread pipe are detachably connected, and a second internal thread sleeve is fixedly connected to one side of the third limiting ring.

[0014] Preferably, the auxiliary docking mechanism includes a substrate, the substrate is arranged on one side of the stainless steel pipe, an optical fiber docking sleeve is arranged on one side of the substrate, the second internal thread sleeve is threadedly sleeved on the outer side of the optical fiber docking sleeve, and the second internal thread sleeve and the optical fiber docking sleeve are detachably connected.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] This FC polarization-maintaining connector realizes the precise clamping, stable positioning, smooth docking and comprehensive protection of the optical fiber through components such as a carefully designed protection mechanism, spring, clamping mechanism, guiding mechanism, optical fiber positioning mechanism, stabilizing mechanism, main docking mechanism and auxiliary docking mechanism. This design not only improves the stability and reliability of optical fiber connection, but also extends the service life of the optical fiber, reduces the maintenance cost, and provides a strong guarantee for the stable operation of the optical fiber communication system. Description of the Drawings

[0017] Figure 1 It is a schematic perspective view of the three-dimensional structure of an FC polarization-maintaining connector;

[0018] Figure 2 It is a schematic perspective view of the three-dimensional structure of an FC polarization-maintaining connector from another perspective;

[0019] Figure 3 It is a schematic perspective exploded view of the three-dimensional structure of an FC polarization-maintaining connector;

[0020] Figure 4 It is a schematic perspective exploded view of the three-dimensional structure of an FC polarization-maintaining connector from another perspective;

[0021] Figure 5 It is a schematic perspective view of the three-dimensional structure of the protection mechanism of an FC polarization-maintaining connector;

[0022] Figure 6 It is a schematic perspective view of the three-dimensional structure of the clamping mechanism of an FC polarization-maintaining connector;

[0023] Figure 7 It is a schematic perspective sectional view of the protection mechanism of an FC polarization-maintaining connector;

[0024] Figure 8 It is a schematic perspective exploded view of the three-dimensional structure of the clamping mechanism of an FC polarization-maintaining connector;

[0025] Figure 9 It is a schematic perspective view of the three-dimensional structure of the clamping mechanism of an FC polarization-maintaining connector from another perspective;

[0026] Figure 10 It is a schematic perspective view of the three-dimensional structure of the stabilizing mechanism of an FC polarization-maintaining connector;

[0027] Figure 11 It is a schematic perspective view of the three-dimensional structure of the main docking mechanism of an FC polarization-maintaining connector.

[0028] Reference numerals: 1, protection mechanism; 101, stainless steel steel pipe; 102, counterweight; 103, externally threaded pipe; 104, first limiting ring; 2, spring; 3, clamping mechanism; 301, first protection pipe; 302, positioning block; 303, clamping rod; 304, fastening sleeve; 4, guiding mechanism; 401, mounting block; 402, guiding pipe; 5, optical fiber positioning mechanism; 501, positioning sleeve; 502, optical fiber protection sleeve; 503, optical fiber body; 6, stabilizing mechanism; 601, first internally threaded pipe; 602, second limiting ring; 603, pressing plate; 604, central hole; 7, main docking mechanism; 701, third limiting ring; 702, second internally threaded sleeve; 8, auxiliary docking mechanism; 801, substrate; 802, optical fiber docking sleeve. Detailed implementation manners

[0029] The following further elaborates on this application Figures 1-11 in conjunction with the accompanying drawings.

[0030] An embodiment of this application discloses an FC polarization-maintaining connection port.

[0031] Referring to Figure 1 , Figure 2 and Figure 3 , an FC polarization-maintaining connection port includes a protection mechanism 1 and a spring 2. Inside the protection mechanism 1, there is a clamping mechanism 3 for clamping and fastening an optical fiber. On one side of the clamping mechanism 3, there is a guiding mechanism 4 for guiding during the optical fiber docking. Inside the protection mechanism 1, near one side, there is an optical fiber positioning mechanism 5 for positioning the optical fiber. On the side of the protection mechanism 1 away from the optical fiber positioning mechanism 5, there is a stabilizing mechanism 6 for stabilizing the guiding mechanism 4. Outside the stabilizing mechanism 6, there are a main docking mechanism 7 and an auxiliary docking mechanism 8. This FC polarization-maintaining connection port realizes precise clamping, stable positioning, smooth docking, and comprehensive protection of the optical fiber through components such as the carefully designed protection mechanism 1, spring 2, clamping mechanism 3, guiding mechanism 4, optical fiber positioning mechanism 5, stabilizing mechanism 6, main docking mechanism 7, and auxiliary docking mechanism 8.

[0032] Referring to Figure 7 , Figure 8 and Figure 9, the protection mechanism 1 includes a stainless steel pipe 101. A counterweight 102 is fixedly sleeved at one end near the center on the outer side of the stainless steel pipe 101. An external thread pipe 103 is fixedly connected to one side of the stainless steel pipe 101. A first limiting ring 104 is fixedly sleeved at one end near the external thread pipe 103 inside the stainless steel pipe 101. The spring 2 is arranged at one side near the center inside the stainless steel pipe 101, and one end of the spring 2 contacts one side of the first limiting ring 104. The clamping mechanism 3 includes a first protection pipe 301. The first protection pipe 301 is slidably sleeved inside the external thread pipe 103. A positioning block 302 is fixedly sleeved at one end near the outside of the first protection pipe 301. Four clamping rods 303 are fixedly connected in a circular arrangement at one end of the first protection pipe 301 away from the positioning block 302. A fastening sleeve 304 is threadedly sleeved on the outside of the four clamping rods 303. The spring 2 is arranged at one side near the center inside the stainless steel pipe 101, and one end of it is in close contact with one side of the first limiting ring 104. This layout design enables the spring 2 to serve as an elastic element to provide necessary buffering and reset functions for the entire FC polarization-maintaining connection port. After passing the optical fiber through the four clamping rods 303 and rotating the fastening sleeve 304 outside the clamping rods 303, the four clamping rods 303 move closer to each other to clamp the optical fiber, thus effectively avoiding the shaking of the optical fiber body 503 during daily use. The clamping mechanism 3 is mainly composed of a first protection pipe 301, a positioning block 302, clamping rods 303 and a fastening sleeve 304. The first protection pipe 301 is slidably sleeved inside the external thread pipe 103, and the clamping rods 303 are arranged in a circular arrangement and fixed at the end of the first protection pipe 301 for clamping the optical fiber. When the optical fiber is inserted into the optical fiber protection sleeve 502 and is located between the four clamping rods 303, by rotating the fastening sleeve 304, it moves downward along the thread on the outside of the clamping rods 303, thereby forcing the clamping rods 303 to contract inward and tightly clamp the optical fiber. This mechanical clamping method ensures the stability of the optical fiber during the connection process.

[0033] Refer to Figure 6, the guiding mechanism 4 includes a mounting block 401. The mounting block 401 is sleeved inside the positioning block 302, and the connection between the mounting block 401 and the positioning block 302 is detachable. A guiding tube 402 is fixedly sleeved at the center inside the mounting block 401. The optical fiber positioning mechanism 5 includes a positioning sleeve 501. The positioning sleeve 501 is sleeved inside the stainless steel pipe 101, and the connection between the positioning sleeve 501 and the stainless steel pipe 101 is detachable. An optical fiber protection sleeve 502 is fixedly sleeved inside the positioning sleeve 501. An optical fiber body 503 is slidably sleeved inside the optical fiber protection sleeve 502. One section of the optical fiber protection sleeve 502 is sleeved between the four clamping rods 303. The guiding mechanism 4 is composed of the mounting block 401 and the guiding tube 402. The mounting block 401 is sleeved inside the positioning block 302, and the two are detachably connected. The guiding tube 402 is fixedly sleeved at the center inside the mounting block 401 and is used to guide the direction during optical fiber docking. During the optical fiber docking process, the guiding tube 402 serves as an accurate guiding channel to ensure that the optical fiber can be smoothly inserted into the optical fiber docking sleeve 802 along a predetermined path. This design reduces the deviation and resistance during optical fiber docking, improves the accuracy and efficiency of docking, ensures the accuracy and smoothness of optical fiber docking, reduces the optical signal loss caused by docking deviation, and improves the overall performance and service life of optical fiber connection. The optical fiber positioning mechanism 5 includes the positioning sleeve 501 and the optical fiber protection sleeve 502. The positioning sleeve 501 is sleeved inside the stainless steel pipe 101 and is detachably connected thereto. The optical fiber protection sleeve 502 is fixedly sleeved inside the positioning sleeve 501 and is used to protect the optical fiber body 503. The optical fiber body 503 is slidably sleeved inside the optical fiber protection sleeve 502 and is accurately fixed under the action of the clamping mechanism 3. The optical fiber protection sleeve 502 not only provides physical protection for the optical fiber but also ensures the stable position of the optical fiber during the connection process.

[0034] Refer to Figure 10 and Figure 11, the stabilizing mechanism 6 includes a first internally threaded tube 601, which is threadedly sleeved on the outside of the externally threaded tube 103, and the connection between the first internally threaded tube 601 and the externally threaded tube 103 is detachable. A second limiting ring 602 is fixedly sleeved at one end of the outside of the first internally threaded tube 601. A pressing plate 603 is fixedly sleeved on the inside of the first internally threaded tube 601 near the second limiting ring 602. The pressing plate 603 and the mounting block 401 are in mutual abutment. A central hole 604 is penetrated through the center of the pressing plate 603. The guiding tube 402 is slidably sleeved inside the central hole 604. The main docking mechanism 7 includes a third limiting ring 701, which is slidably sleeved on the outside of the first internally threaded tube 601, and the connection between the third limiting ring 701 and the first internally threaded tube 601 is detachable. A second internally threaded sleeve 702 is fixedly connected to one side of the third limiting ring 701. The auxiliary docking mechanism 8 includes a substrate 801, which is arranged on one side of the stainless steel pipe 101. An optical fiber docking sleeve 802 is arranged on one side of the substrate 801. The second internally threaded sleeve 702 is threadedly sleeved on the outside of the optical fiber docking sleeve 802, and the connection between the second internally threaded sleeve 702 and the optical fiber docking sleeve 802 is detachable. The stabilizing mechanism 6 includes components such as a first internally threaded tube 601, a second limiting ring 602, and a pressing plate 603. Among them, the pressing plate 603 and the mounting block 401 are in a mutually abutting state, ensuring the stability of the guiding mechanism 4. By rotating the first internally threaded tube 601, it moves upward along the outside of the externally threaded tube 103 in a threaded manner until the pressing plate 603 tightly abuts against the mounting block 401. This structure not only fixes the positions of the mounting block 401 and the guiding mechanism 4, but also further supports and positions the guiding tube 402 through the central hole 604 inside the pressing plate 603, ensuring that it will not shift or shake during the optical fiber docking process. The main docking mechanism 7 is composed of a third limiting ring 701 and a second internally threaded sleeve 702, while the auxiliary docking mechanism 8 includes a substrate 801 and an optical fiber docking sleeve 802. The two are interlocked and fixed through the threaded connection between the second internally threaded sleeve 702 and the optical fiber docking sleeve 802. During the optical fiber docking process, first, the optical fiber is inserted into the optical fiber protection sleeve 502 and the guiding tube 402 and fastened by the clamping mechanism 3. Subsequently, the main docking mechanism 7 composed of the third limiting ring 701 and the second internally threaded sleeve 702 is slidably sleeved on the outside of the first internally threaded tube 601, and the second internally threaded sleeve 702 is rotated to be threadedly connected to the optical fiber docking sleeve 802 on the substrate 801. This design not only realizes the precise docking between two FC polarization-maintaining connection ports, but also ensures the stability of the docking through the fastening force of the threaded connection.

[0035] The implementation principle of an FC polarization-maintaining connector in an embodiment of the present application is as follows: Through the coordinated operation of its various precisely designed mechanisms, the FC polarization-maintaining connector ensures the stability, accuracy, and efficiency of fiber optic connections. First, the optical fiber is inserted into the fiber protection sleeve 502 inside the stainless steel pipe 101. This protection sleeve not only provides physical protection for the optical fiber body 503 but also ensures the stable position of the optical fiber during the connection process. Subsequently, the optical fiber passes through the guide tube 402 of the guiding mechanism 4. This guide tube serves as an accurate guiding channel, reducing the deviation and resistance during fiber optic docking and improving the accuracy and efficiency of docking. When the optical fiber reaches the clamping mechanism 3, it is surrounded by four annularly arranged clamping rods 303. These clamping rods are fixed at the end of the first protection tube 301, and the first protection tube is slidably sleeved inside the external thread tube 103. By rotating the fastening sleeve 304, it moves downward along the thread outside the clamping rod 303, thereby forcing the clamping rod to contract inward and tightly clamp the optical fiber. This mechanical clamping method ensures the stability of the optical fiber during the connection process, effectively avoiding the shaking of the optical fiber during daily use. At the same time, through the rotation of the first internal thread tube 601 of the stabilizing mechanism 6, it moves upward along the external thread outside the external thread tube 103 until the pressure plate 603 tightly abuts against the mounting block 401. The pressure plate not only fixes the positions of the mounting block 401 and the guiding mechanism 4 but also further supports and positions the guide tube 402 through the central hole 604 inside it, ensuring that it does not shift or shake during the fiber optic docking process. Finally, during the fiber optic docking process, the main docking mechanism 7 consists of a third limiting ring 701 and a second internal thread sleeve 702, which are slidably sleeved outside the first internal thread tube 601. By rotating the second internal thread sleeve 702, it is threadedly connected to the fiber optic docking sleeve 802 on the substrate 801, achieving precise docking between two FC polarization-maintaining connectors. This design not only ensures the stability of the docking but also improves the long-term reliability of the connection through the fastening force of the threaded connection.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An FC polarization-maintaining connector, comprising a protection mechanism (1) and a spring (2), characterized in that: Inside the protection mechanism (1), a clamping mechanism (3) for clamping and fastening the optical fiber is provided. On one side of the clamping mechanism (3), a guiding mechanism (4) for guiding during the butt-joint of the optical fiber is provided. Inside the protection mechanism (1) near one side, an optical fiber positioning mechanism (5) for positioning the optical fiber is provided. On the side of the protection mechanism (1) away from the optical fiber positioning mechanism (5), a stabilizing mechanism (6) for stabilizing the guiding mechanism (4) is provided. Outside the stabilizing mechanism (6), a main butt-joint mechanism (7) and a secondary butt-joint mechanism (8) are provided.

2. The FC polarization maintaining connector according to claim 1, characterized in that: The protection mechanism (1) includes a stainless steel pipe (101). A counterweight (102) is fixedly sleeved at one end near the center on the outside of the stainless steel pipe (101). An external thread pipe (103) is fixedly connected to one side of the stainless steel pipe (101). A first limiting ring (104) is fixedly sleeved at one end near the external thread pipe (103) inside the stainless steel pipe (101).

3. The FC polarization maintaining connector according to claim 2, wherein: The spring (2) is arranged at one side near the center inside the stainless steel pipe (101), and one end of the spring (2) contacts one side of the first limiting ring (104).

4. The FC polarization-maintaining connector according to claim 3, characterized in that: The clamping mechanism (3) includes a first protection pipe (301). The first protection pipe (301) is slidably sleeved inside the external thread pipe (103). A positioning block (302) is fixedly sleeved at one end near the outside of the first protection pipe (301). Four clamping rods (303) are fixedly connected in a circular arrangement at the end of the first protection pipe (301) away from the positioning block (302). A fastening sleeve (304) is threadedly sleeved on the outside of the four clamping rods (303).

5. The FC polarization maintaining connector according to claim 4, characterized in that: The guiding mechanism (4) includes a mounting block (401). The mounting block (401) is sleeved inside the positioning block (302), and the mounting block (401) and the positioning block (302) are detachably connected. A guiding pipe (402) is fixedly sleeved at the center inside the mounting block (401).

6. The FC polarization maintaining connector according to claim 4, wherein: The optical fiber positioning mechanism (5) includes a positioning sleeve (501). The positioning sleeve (501) is sleeved inside the stainless steel pipe (101), and the positioning sleeve (501) and the stainless steel pipe (101) are detachably connected. An optical fiber protection sleeve (502) is fixedly sleeved inside the positioning sleeve (501). An optical fiber body (503) is slidably sleeved inside the optical fiber protection sleeve (502). One section of the optical fiber protection sleeve (502) is sleeved between the four clamping rods (303).

7. The FC polarization-maintaining connector according to claim 5, characterized in that: The stabilizing mechanism (6) includes a first internally threaded tube (601), the first internally threaded tube (601) is threadedly sleeved on the outside of the externally threaded tube (103), and the connection between the first internally threaded tube (601) and the externally threaded tube (103) is detachable. A second limiting ring (602) is fixedly sleeved at one end of the outside of the first internally threaded tube (601). A pressing plate (603) is fixedly sleeved inside the first internally threaded tube (601) near the side of the second limiting ring (602). The pressing plate (603) and the mounting block (401) are in mutual abutment. A central hole (604) is penetrated through the center of the pressing plate (603). The guiding tube (402) is slidably sleeved inside the central hole (604).

8. The FC polarization-maintaining connector according to claim 7, wherein: The main docking mechanism (7) includes a third limiting ring (701), the third limiting ring (701) is slidably sleeved on the outside of the first internally threaded tube (601), and the connection between the third limiting ring (701) and the first internally threaded tube (601) is detachable. One side of the third limiting ring (701) is fixedly connected with a second internally threaded sleeve (702).

9. The FC polarization-maintaining connector according to claim 8, characterized in that: The auxiliary docking mechanism (8) includes a substrate (801), the substrate (801) is arranged on one side of the stainless steel pipe (101). An optical fiber docking sleeve (802) is arranged on one side of the substrate (801). The second internally threaded sleeve (702) is threadedly sleeved on the outside of the optical fiber docking sleeve (802), and the connection between the second internally threaded sleeve (702) and the optical fiber docking sleeve (802) is detachable.

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