Underwater laser fiber transmission structure

Abstract

The utility model relates to the field of optical fiber transmission, and discloses an underwater laser optical fiber transmission structure which comprises an optical fiber, a main line, a main line joint and an optical fiber joint, one end of the optical fiber joint is fixedly connected with the optical fiber joint, and one end of the main line joint is fixedly connected with the main line joint. One end, deviating from the main line, of the main line connector is connected with one end, deviating from the optical fiber, of the optical fiber connector in an inserted mode, a first connector is arranged outside the optical fiber, a second connector is arranged outside the main line, the second connector and the first connector are connected in a clamped mode, and the second connector and the first connector are in threaded connection with a locking structure. In the signal transmission process of an existing underwater laser optical fiber, a connector is prone to falling off or loosening at the connecting position of the optical fiber, in addition, a waterproof sealing structure is important, and the underwater laser optical fiber connector aims at achieving the purposes that the connecting position of the optical fiber and a main line is connected in a clamping mode, operation is convenient, and the structure is simple. And a locking structure is additionally arranged outside the clamping structure of the optical fiber and the main line.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber transmission, specifically an underwater laser optical fiber transmission structure. Background Technology

[0002] Laser communication is a communication method that uses laser technology to transmit information. Laser is an advanced light source with many excellent characteristics, such as high brightness, strong directionality, good monochromaticity, and high coherence. Based on different transmission media, laser communication can be divided into two main types: atmospheric laser communication and fiber laser communication. Atmospheric laser communication uses the atmosphere as the medium for information transmission, while fiber laser communication transmits optical signals through optical fibers. Specially designed optical fibers are used for underwater transmission and usually have high resistance to water immersion, enabling them to work stably in marine or other aquatic environments.

[0003] The connectors and joints of the underwater laser fiber optic transmission structure are used to connect different segments of optical fiber, ensuring smooth signal transmission and reducing reflection loss. To prevent water from entering the optical fiber, the joints and ports of the transmission system are usually designed with a seal to ensure airtightness. Existing underwater laser fibers are often affected by external forces such as mechanical impact, vibration, temperature changes or other environmental factors during signal transmission. At the connection of the optical fiber, the connector is prone to falling off or loosening. In addition, the waterproof sealing structure is also of paramount importance. Therefore, we propose an underwater laser fiber optic transmission structure. Utility Model Content

[0004] Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an underwater laser fiber optic transmission structure that solves the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: an underwater laser fiber optic transmission structure, comprising an optical fiber, a main line, a main line connector, and an optical fiber connector. One end of the optical fiber connector is fixedly connected to the main line connector, and one end of the main line connector is fixedly connected to the main line connector. The end of the main line connector opposite to the main line is inserted and connected to the end of the optical fiber connector opposite to the optical fiber. A first connector is provided outside the optical fiber, and a second connector is provided outside the main line. The second connector is snapped into the first connector, and the second connector and the first connector are threaded together and locked. The first connector includes a sleeve, a waterproof tube, a waterproof protrusion, and a snap-fit ​​rod. The inner ring of the waterproof protrusion is fixedly connected to the outer cylindrical surface of the optical fiber. The end of the sleeve with a larger diameter is fixedly connected to the waterproof tube. Two snap-fit ​​rods evenly distributed around the circumference are fixedly connected to the outer cylindrical surface of the sleeve away from the waterproof tube. The waterproof protrusion on the optical fiber is coaxially snapped into the waterproof tube and tightly connected to the waterproof tube. The inner cylindrical surface of the waterproof tube is fixedly connected to the outer surface of the main line. The optical fiber connector is located between the sleeve and the waterproof tube.

[0008] Preferably, the second connector includes a sleeve, a waterproof tube, a waterproof protrusion, a vertical sliding groove, and an annular groove. The inner ring of the waterproof protrusion is fixedly connected to the outer cylindrical surface of the main line. The larger diameter end of the sleeve is fixedly connected to the waterproof tube. The end of the sleeve away from the waterproof tube has two evenly distributed vertical sliding grooves on its inner cylindrical surface. The inner cylindrical surface of the sleeve has an annular groove corresponding to the vertical sliding grooves. The waterproof protrusion on the main line is coaxially snapped into the waterproof tube and tightly connected to it. The inner cylindrical surface of the waterproof tube is fixedly connected to the outer surface of the main line. The main line connector is between the sleeve and the waterproof tube. The sleeve of the optical fiber is coaxially inserted into the sleeve of the main line. The snap-fit ​​rod corresponds to the annular groove and is snapped into the annular groove.

[0009] Preferably, the inner ring of the limiting protrusion is fixedly connected to the outer cylindrical surface of the optical fiber sleeve near the waterproof pipe, and the outer cylindrical surface of the main wire sleeve is provided with an external thread away from the waterproof pipe. Four circumferentially evenly distributed spring pieces are fixedly connected to the outer cylindrical surface of the sleeve corresponding to the external thread.

[0010] Preferably, the locking structure includes a locking tube, a limiting protrusion one, and an internal thread. One end of the locking tube is fixedly connected to the limiting protrusion one. The inner cylindrical surface of the limiting protrusion one is provided with an internal thread. The limiting protrusion one and the limiting protrusion two are coaxially engaged and connected, and the internal thread and the external thread are coaxially threaded together.

[0011] (III) Beneficial Effects

[0012] Compared with the prior art, this utility model provides an underwater laser fiber optic transmission structure, which has the following beneficial effects:

[0013] 1. This underwater laser fiber optic transmission structure uses a snap-fit ​​connection at the junction of the fiber optic cable and the main line, which is convenient to operate. The operator only needs to align the fiber optic connector and the main line connector, insert and rotate the snap-fit ​​structure to achieve a stable connection. In addition, the snap-fit ​​structure is waterproof, which effectively prevents water from entering the junction of the fiber optic cable and the main line.

[0014] 2. This underwater laser fiber optic transmission structure adds a locking structure to the snap-fit ​​structure between the fiber optic cable and the main line. It uses spring clips and threaded connections to strengthen the locking. The spring clips can provide appropriate pressure during connection, so that the fiber optic cable and the main line can fit tightly together and prevent relative displacement under external friction or vibration. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an exploded view of the structure of this utility model;

[0017] Figure 3 This is an exploded schematic diagram of the second connector in this utility model;

[0018] Figure 4 This is a cross-sectional view of the connection between the optical fiber and the main line of this utility model;

[0019] Figure 5 for Figure 4 A magnified view of part A in the diagram.

[0020] In the diagram: 1. Optical fiber; 2. Main line; 3. Sleeve; 4. Locking tube; 5. Waterproof tube; 6. Main line connector; 7. Optical fiber connector; 8. Waterproof protrusion; 9. External thread; 10. Spring; 11. Vertical sliding groove; 12. Limiting protrusion one; 13. Limiting protrusion two; 14. Internal thread; 15. Connecting rod; 16. Annular groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5An underwater laser fiber optic transmission structure includes an optical fiber 1, a main line 2, a main line connector 6, and an optical fiber connector 7. One end of the connector of the optical fiber 1 is fixedly connected to the optical fiber connector 7, and one end of the connector of the main line 2 is fixedly connected to the main line connector 6. The end of the main line connector 6 facing away from the main line 2 is plugged into the end of the optical fiber connector 7 facing away from the optical fiber 1. The optical fiber 1 is provided with a first connector, and the main line 2 is provided with a second connector. The second connector is snapped into the first connector, and the second connector and the first connector are threaded together and locked. The first connector includes a sleeve 3, a waterproof tube 5, a waterproof protrusion 8, and a snap-fit ​​rod 15. The inner ring of the waterproof protrusion 8 is fixedly connected to the outer cylindrical surface of the optical fiber 1. Above, the larger diameter end of the sleeve 3 is fixedly connected to the waterproof pipe 5. Two evenly distributed snap-fit ​​rods 15 are fixedly connected to the outer cylindrical surface of the sleeve 3 away from the waterproof pipe 5. The waterproof protrusion 8 on the optical fiber 1 is coaxially snap-fitted into the waterproof pipe 5 and tightly connected to the waterproof pipe 5. The inner cylindrical surface of the waterproof pipe 5 is fixedly connected to the outer surface of the main line 2. The optical fiber connector 7 is between the sleeve 3 and the waterproof pipe 5. The sleeve 3 is used to protect the connection between the main line connector 6 and the optical fiber connector 7. The waterproof pipe 5 and the waterproof protrusion 8 are used for waterproofing. The shape of the outer surface of the waterproof pipe 5 is conducive to reducing resistance in water flow and reducing the impact of water flow on the connector. The snap-fit ​​rod 15 is used to snap-fit ​​with the first connector.

[0023] Furthermore, the second connector includes a sleeve 3, a waterproof pipe 5, a waterproof protrusion 8, a vertical sliding groove 11, and an annular groove 16. The inner ring of the waterproof protrusion 8 is fixedly connected to the outer cylindrical surface of the main line 2. The larger diameter end of the sleeve 3 is fixedly connected to the waterproof pipe 5. The end of the sleeve 3 facing away from the waterproof pipe 5 has two evenly distributed vertical sliding grooves 11 on its inner cylindrical surface. The inner cylindrical surface of the sleeve 3 has an annular groove 16 corresponding to the vertical sliding grooves 11. The waterproof protrusion 8 on the main line 2 is coaxially snapped into the waterproof pipe 5 and tightly connected to the waterproof pipe 5. The inner cylindrical surface of the waterproof pipe 5 is fixedly connected to the outer surface of the main line 2. The main line connector 6 is located between the sleeve 3 and the waterproof pipe 5. The sleeve 3 of the optical fiber 1 is coaxially inserted into the sleeve 3 of the main line 2. The snap-fit ​​rod 15 corresponds to the annular groove 16 and snap-fits into the annular groove 16. The vertical sliding groove 11 is the sliding track for the snap-fit ​​rod 15 to follow the sleeve 3 on the optical fiber 1 into the sleeve 3 on the main line 2. The snap-fit ​​rod 15 can rotate between the annular grooves 16 and snap-fits into the annular grooves 16.

[0024] Furthermore, the inner ring of the limiting protrusion 2 13 is fixedly connected to the outer cylindrical surface of the sleeve 3 of the optical fiber 1 near the waterproof pipe 5. The limiting protrusion 2 13 is used to engage the limiting and locking structure. The outer cylindrical surface of the sleeve 3 of the main line 2 is provided with an external thread 9 at a position away from the waterproof pipe 5. Four evenly distributed circumferential spring pieces 10 are fixedly connected to the outer cylindrical surface of the sleeve 3 corresponding to the external thread 9. The external thread 9 is used to connect with the locking structure. The spring pieces 10 are used to strengthen the connection between the locking structure and the external thread 9. The external thread 9 has a certain rebound force so that the locking structure does not easily rotate or shift.

[0025] Furthermore, the locking structure includes a locking tube 4, a limiting protrusion 12, and an internal thread 14. One end of the locking tube 4 is fixedly connected to the limiting protrusion 12. The inner cylindrical surface of the limiting protrusion 12 is provided with an internal thread 14. The limiting protrusion 12 and the limiting protrusion 2 13 are coaxially snapped together, and the internal thread 14 is coaxially threaded together with the external thread 9. The locking tube 4 is used to lock the sleeve 3 of the optical fiber 1 and the sleeve 3 of the main line 2. The limiting protrusion 12 is used to snap together with the limiting protrusion 2 13. A sealing gasket is pressed between the limiting protrusion 12 and the limiting protrusion 2 13. The internal thread 14 is used to thread together with the external thread 9. The end point of the internal thread 14 and the external thread 9 presses the spring piece 10 tightly inside, making it easy to unscrew when disassembling.

[0026] Working principle: When installing fiber optic cable 1 and main line 2, align and insert the fiber optic connector 7 of fiber optic cable 1 and the main line connector 6 of main line 2. At the same time, insert the clamping rod 15 of the sleeve 3 on fiber optic cable 1 along one end of the vertical sliding groove 11 on main line 2. When the clamping rod 15 is inserted between the annular grooves 16, rotate the clamping rod 15 of the sleeve 3 on fiber optic cable 1 to clamp the clamping rod 15 between the annular grooves 16. After clamping, rotate the locking tube 4. The internal thread 14 and the external thread 9 of the locking tube 4 are threaded together. When the locking tube 4 rotates, it presses the spring piece 10 against the surface of the sleeve 3. The rebound force of the sleeve 3 makes the sleeve 3 and the locking tube 4 tightly connected. Rotate the locking tube 4 until the limiting protrusion 12, the limiting protrusion 2 13 and the sealing gasket are tightly fitted, and the connection is completed. When disassembling, simply reverse the operation.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An underwater laser fiber optic transmission structure, comprising an optical fiber (1), a main line (2), a main line connector (6), and an optical fiber connector (7), wherein one end of the optical fiber (1) connector is fixedly connected to the optical fiber connector (7), one end of the main line (2) connector is fixedly connected to the main line connector (6), and the end of the main line connector (6) facing away from the main line (2) is plugged into the end of the optical fiber connector (7) facing away from the optical fiber (1), characterized in that: The optical fiber (1) is provided with a first connector, and the main line (2) is provided with a second connector. The second connector is snapped into the first connector. The second connector and the first connector are threaded together and locked. The first connector includes a sleeve (3), a waterproof tube (5), a waterproof protrusion (8), and a snap-fit ​​rod (15). The inner ring of the waterproof protrusion (8) is fixedly connected to the outer cylindrical surface of the optical fiber (1). The larger diameter end of the sleeve (3) is fixedly connected to the waterproof tube (5). Two snap-fit ​​rods (15) are fixedly connected to the outer cylindrical surface of the sleeve (3) away from the waterproof tube (5). The waterproof protrusion (8) on the optical fiber (1) is coaxially snapped into the waterproof tube (5) and tightly connected to the waterproof tube (5). The inner cylindrical surface of the waterproof tube (5) is fixedly connected to the outer surface of the main line (2). The optical fiber connector (7) is located between the sleeve (3) and the waterproof tube (5).

2. The underwater laser fiber optic transmission structure according to claim 1, characterized in that: The second connector includes a sleeve (3), a waterproof pipe (5), a waterproof protrusion (8), a vertical sliding groove (11), and an annular groove (16). The inner ring of the waterproof protrusion (8) is fixedly connected to the outer cylindrical surface of the main line (2). The sleeve (3) is fixedly connected to the waterproof pipe (5) at the end with a larger diameter. The end of the sleeve (3) away from the waterproof pipe (5) has two evenly distributed vertical sliding grooves (11) on its inner cylindrical surface. The inner cylindrical surface of the sleeve (3) has an annular groove (16) corresponding to the vertical sliding grooves (11). The main line ( 2) The waterproof protrusion (8) on the waterproof tube (5) is coaxially snapped into the waterproof tube (5) and tightly connected to the waterproof tube (5). The inner cylindrical surface of the waterproof tube (5) is fixedly connected to the outer surface of the main line (2). The main line connector (6) is between the sleeve (3) and the waterproof tube (5). The sleeve (3) of the optical fiber (1) is coaxially inserted into the sleeve (3) of the main line (2). The snap-fit ​​rod (15) corresponds to the annular groove (16) and the snap-fit ​​rod (15) is snapped into the annular groove (16).

3. The underwater laser fiber optic transmission structure according to claim 1, characterized in that: The inner ring of the limiting protrusion two (13) is fixedly connected to the outer cylindrical surface of the sleeve (3) of the optical fiber (1) near the waterproof pipe (5). The outer cylindrical surface of the sleeve (3) of the main line (2) is provided with an external thread (9) away from the waterproof pipe (5). The outer cylindrical surface of the sleeve (3) is fixedly connected with four circumferentially evenly distributed spring pieces (10) corresponding to the external thread (9).

4. The underwater laser fiber optic transmission structure according to claim 3, characterized in that: The locking structure includes a locking tube (4), a limiting protrusion one (12) and an internal thread (14). One end of the locking tube (4) is fixedly connected to the limiting protrusion one (12). The inner cylindrical surface of the limiting protrusion one (12) is provided with an internal thread (14). The limiting protrusion one (12) and the limiting protrusion two (13) are coaxially snapped together and the internal thread (14) is coaxially threaded with the external thread (9).

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