Connecting structure for optical cable butt joint

Abstract

The utility model discloses a connecting structure for butt joint of optical cables, which belongs to the technical field of optical cable connecting structures and comprises a bearing head and a connecting plug, the bearing head and the connecting plug are in plug connection, a connecting slot is arranged at the front end of the bearing head, a plurality of anti-rotation clamping slots are arranged on the slot wall, and a connecting plug block matched with the connecting slot is arranged at the front end of the connecting plug. Limiting rings are fixedly arranged on the outer walls of the bearing head and the connecting plug, and a first pressing cylinder and a second pressing cylinder are respectively sleeved on the limiting rings in a sliding manner and are in threaded connection with each other. The technical key points are as follows: the engagement connection between the anti-rotation convex edge and the anti-rotation clamping groove can play a role in sharing torsion force to ensure that the joint has relatively strong torsion resistance, and the threaded connection between the first pressing cylinder and the second pressing cylinder can enable the rear ends of the first pressing cylinder and the second pressing cylinder to be tightly attached to the limiting ring, so that opposite extrusion force is applied, and the anti-rotation effect of the anti-rotation convex edge and the anti-rotation clamping groove is improved. Therefore, the socket and the connecting plug cannot be separated, and the tensile strength of the butt joint position is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of optical cable connection structure technology, specifically a connection structure for optical cable splicing. Background Technology

[0002] Fiber optic splicing, also known as fiber optic cable connection, is the entire process of connecting the end of one fiber optic cable to the beginning of another to form a continuous fiber optic line. The connection point in this process is called a fiber optic connector, which has a significant impact on transmission quality and maintenance costs.

[0003] The utility model with announcement number CN206906635U discloses an optical cable splicing device. In this utility model, the optical fiber is pressed into the optical fiber slot by the pressure plate on the fixing cover, so that it is in full contact with the contact plate. Then, the fixing cover is fixed by the fixing screw hole. The line contact effect is good. After the optical fiber is installed on the connector head and connector head, the connection of the optical fiber can be completed simply by inserting the connector plug on the connector head into the connector socket on the connector head. The operation is simple, the installation and disassembly are convenient, and the practicality is strong.

[0004] In the above-mentioned device, the connection is achieved by plugging the female connector and the female connector together. Although this connection method is simple and easy to implement, it has the disadvantage of low pull-out bearing capacity. During the laying or maintenance of optical cables, the female and male connectors are prone to slipping and separating, resulting in connection failure. In addition, optical cables are inevitably subjected to a certain amount of torque during laying, and the above-mentioned connection structure lacks a special measure to share the torque. The torque is mainly shared by the connector. Under the action of torque for a long time, the connector is prone to compression deformation or even tearing. Therefore, in order to solve the above problems, a connection structure for optical cable connection is proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a connection structure for optical cable splicing. This optical cable connection structure adopts a plug-in connection method during connection, that is, the connecting plug is inserted into the connecting slot to realize the connection between the socket and the plug. After the plugging is completed, the first clamping cylinder and the second clamping cylinder are screwed to make the two threaded connection, so that the rear ends of both are tightly fitted with the limiting ring, thereby applying opposing compressive force, making the socket and the plug inseparable, which greatly improves the tensile strength of the splicing position. In addition, the interlocking connection between the anti-rotation protrusion and the anti-rotation slot can play a role in sharing the torque, ensuring that the connection has strong anti-torsion performance, and avoiding loosening or poor contact at the connection under torque. This solves the technical problems of the plug-in connection method in the prior art, which usually has low pull-out bearing capacity, is prone to slippage and separation of the male and female connectors, and lacks special measures to share torque, which easily leads to loosening of the connection.

[0006] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0007] A connection structure for optical cable splicing includes a socket joint and a plug joint, which are plugged together, and optical cables are connected to both ends. The socket joint has a connection slot at its front end, and the slot wall has several anti-rotation slots. The plug joint has a connection block fixedly installed at its front end that matches the connection slot, and an anti-rotation protrusion fixedly installed on its side that corresponds to the anti-rotation slot. The interlocking connection between the anti-rotation protrusion and the anti-rotation slot can share the torque, ensuring that the connection has strong anti-torsion performance and preventing the connection from loosening or poor contact under torque. The outer walls of both the socket joint and the plug joint are fixedly provided with limiting rings, on which a first clamping cylinder and a second clamping cylinder are slidably sleeved respectively. The front ends of the first clamping cylinder and the second clamping cylinder are threaded together. After the splicing is completed, the first clamping cylinder and the second clamping cylinder are screwed to make the threaded connection between them, so that the rear ends of both are tightly fitted with the limiting rings, thereby applying opposing compressive force, making the socket joint and the plug joint unable to separate, and significantly improving the tensile strength of the splicing position.

[0008] In one possible implementation, the inner walls of both the first and second clamping cylinders are slidably fitted against the outer wall of the limiting ring, and both of them have outward protruding structures at their front and rear ends to limit the sliding range of the first and second clamping cylinders. The above structure can ensure the locking effect between the first and second clamping cylinders and the limiting ring through the outward protruding structures, and at the same time prevent the first and second clamping cylinders from detaching from the limiting ring during the sliding process.

[0009] In one possible implementation, the bottom of the connection slot has several holes and slots in which receiving cores are embedded. The front end of the connection plug is fixedly provided with several transmission cores corresponding to the receiving cores. When the connection plug is inserted into the connection slot, the transmission cores are inserted into the receiving cores. The above structure can complete the transmission of signals and play the role of connecting the transmission path.

[0010] In one possible implementation, a connecting cylinder is fixedly provided at the front end of the second pressing cylinder, and the outer wall of the connecting cylinder is threaded. The inner wall of the front end of the first pressing cylinder is threaded accordingly, and the connecting cylinder and the first pressing cylinder are threadedly connected. The above structure can realize the threaded connection between the first pressing cylinder and the second pressing cylinder.

[0011] In one possible implementation, the front end face of the socket is fixedly provided with a plurality of mounting protrusions around the connecting slot, and a sealing gasket is fitted on it. After the socket and the plug are connected to each other, the sealing gasket can seal the contact gap to prevent moisture and dust from entering. The sealing gasket is made of elastic rubber and can extend beyond the end face of the mounting protrusion after installation. The above structure can ensure that when the mounting protrusion abuts against the plug, the sealing gasket has undergone a certain amount of compression deformation, thus achieving a sealing effect.

[0012] In one possible implementation, both the first and second clamping cylinders are provided with sealing rings on their rear sides. After the first and second clamping cylinders are threaded together, the sealing rings inside both are in contact with the limiting ring. After the first and second clamping cylinders are connected to each other, they can be regarded as a whole. The sealing rings can block the openings on both sides of the whole, further improving the sealing effect at the connection.

[0013] In one possible implementation, the sealing ring includes an elastic hollow ring with two symmetrical outer pressure sheets fixedly disposed inside. When the front and rear sides of the hollow ring are deformed by pressure, the outer pressure sheets can deform to the upper and lower sides and squeeze the upper and lower sides of the hollow ring to bulge outward and fit tightly with the structure, thereby improving its sealing effect.

[0014] In one possible implementation, a shaft is fixedly disposed in the connecting slot, and a shaft groove matching the size of the shaft is opened at the front end of the connecting block. This structure can enhance the bending resistance and tightness of the connection.

[0015] In summary, this utility model has the following beneficial technical effects:

[0016] The optical cable connection structure uses a plug-in connection method during connection, that is, the connecting plug is inserted into the connecting slot to realize the docking of the socket and the plug. After the plugging is completed, the first clamping cylinder and the second clamping cylinder are screwed to make the two threaded connection, so that the rear ends of both are tightly fitted with the limiting ring, thereby applying opposing compressive force, making the socket and the plug unable to separate, and greatly improving the tensile strength of the docking position.

[0017] In addition, the interlocking connection between the anti-rotation protrusion and the anti-rotation groove can share the torque, ensuring that the connection has strong anti-torsion performance and preventing the connection from becoming loose or having poor contact under torque. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the connector structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the connector structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the sealing ring structure of this utility model.

[0024] In the diagram: 1. Socket connector; 11. Connecting slot; 12. Anti-rotation slot; 13. Receiver core; 14. Insert shaft; 15. Mounting protrusion; 2. Socket connector; 21. Connecting plug; 22. Transmission core; 23. Anti-rotation protrusion; 24. Shaft groove; 3. Optical cable; 41. First clamping cylinder; 42. Second clamping cylinder; 43. Connecting cylinder; 44. Limiting ring; 45. Sealing ring; 451. Hollow rubber ring; 452. External pressure sheet; 5. Sealing gasket ring. Detailed Implementation

[0025] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0026] like Figure 1 - Figure 4 As shown in the figure, this embodiment provides a connection structure for optical cable splicing, including a receiving connector 1 and a plug connector 2, which are plugged together. Optical cables 3 are connected to the ends of both. The receiving connector 1 has a connecting slot 11 at its front end, and the slot wall has several anti-rotation slots 12. The plug connector 2 has a connecting plug block 21 fixedly installed at its front end, matching the connecting slot 11, and an anti-rotation protrusion 23 fixedly installed on its side, corresponding to the anti-rotation slots 12. The interlocking connection between the anti-rotation protrusion 23 and the anti-rotation slots 12 can distribute the torque, ensuring that the connection has strong anti-torsion performance. To prevent loosening or poor contact at the connection point under torque, both the socket joint 1 and the plug joint 2 are fixedly provided with limiting rings 44 on their outer walls. A first clamping cylinder 41 and a second clamping cylinder 42 are slidably sleeved on the limiting rings 44. The front ends of the first clamping cylinder 41 and the second clamping cylinder 42 are threaded together. After the insertion is completed, the first clamping cylinder 41 and the second clamping cylinder 42 are screwed to make the two threads connected, so that the rear ends of both are tightly fitted with the limiting rings 44. This applies opposing compressive force, making it impossible for the socket joint 1 and the plug joint 2 to separate, and greatly improving the tensile strength at the docking position.

[0027] The inner walls of both the first pressing cylinder 41 and the second pressing cylinder 42 are slidably fitted against the outer wall of the limiting ring 44, and both of them have outward protrusions at their front and rear ends to limit the sliding range of the first pressing cylinder 41 and the second pressing cylinder 42. The above structure can ensure the locking effect between the first pressing cylinder 41, the second pressing cylinder 42 and the limiting ring 44 through the outward protrusions, and at the same time can prevent the first pressing cylinder 41 and the second pressing cylinder 42 from disengaging from the limiting ring 44 during the sliding process.

[0028] like Figure 3 - Figure 4 As shown, the bottom of the connection slot 11 has several holes and slots, in which a receiving core 13 is embedded. The front end of the connection plug 21 is fixedly provided with several transmission cores 22 corresponding to the receiving cores 13. When the connection plug 21 is inserted into the connection slot 11, the transmission cores 22 are inserted into the receiving cores 13. The above structure can complete the transmission of signals and play the role of connecting the transmission path.

[0029] like Figure 2 As shown, a connecting cylinder 43 is fixedly provided at the front end of the second pressing cylinder 42, and a thread is provided on its outer wall. A corresponding thread is provided on the inner wall of the front end of the first pressing cylinder 41. The connecting cylinder 43 and the first pressing cylinder 41 are threadedly connected. The above structure can realize the threaded connection between the first pressing cylinder 41 and the second pressing cylinder 42.

[0030] like Figure 4 As shown, the front end face of the connector 1 is fixedly provided with several mounting protrusions 15 around the connecting slot 11, and a sealing gasket 5 is fitted on them. After the connector 1 and the plug 2 are connected to each other, the sealing gasket 5 can seal the contact gap to prevent water vapor and dust from entering. The sealing gasket 5 is made of elastic rubber and can extend beyond the end face of the mounting protrusion 15 after installation. The above structure can ensure that when the mounting protrusion 15 abuts against the plug 2, the sealing gasket 5 has undergone a certain amount of compression deformation, thus achieving a sealing effect.

[0031] like Figure 2 As shown, both the first pressing cylinder 41 and the second pressing cylinder 42 are provided with sealing rings 45 on their inner rear sides. After the first pressing cylinder 41 and the second pressing cylinder 42 are threaded together, the sealing rings 45 inside both are in contact with the limiting ring 44. After the first pressing cylinder 41 and the second pressing cylinder 42 are connected to each other, they can be regarded as a whole. The sealing rings 45 can block the openings on both sides of the whole, further improving the sealing effect at the connection.

[0032] like Figure 5As shown, the sealing ring 45 includes an elastic hollow ring 451, inside which are fixed two symmetrical outer pressure sheets 452 arranged outwards. When the hollow ring 451 is deformed by pressure on the front and rear sides, the outer pressure sheets 452 can deform to the upper and lower sides and squeeze the upper and lower sides of the hollow ring 451 to bulge outwards and fit tightly with the structure, thereby improving its sealing effect.

[0033] like Figure 3 - Figure 4 As shown, a shaft 14 is fixedly installed in the connecting slot 11, and a shaft groove 24 with the same size as the shaft 14 is opened at the front end of the connecting block 21. This structure can enhance the bending resistance and tightness of the connection.

[0034] The working principle and usage process of this utility model:

[0035] The optical cable connection structure uses a plug-in connection method during connection. The connecting plug 21 is inserted into the connecting slot 11 to achieve the docking of the connector 1 and the plug 2. After the plugging is completed, the first clamping cylinder 41 and the second clamping cylinder 42 are screwed to make them threaded together, so that the rear ends of both are tightly fitted with the limiting ring 44. This applies opposing compressive force, making the connector 1 and the plug 2 unable to separate, which greatly improves the tensile strength of the docking position. The first clamping cylinder 41 and the second clamping cylinder 42 can be regarded as a whole after they are connected to each other, and the sealing ring 45 can seal the openings on both sides of the whole, improving the sealing effect of the connection.

[0036] In addition, the interlocking connection between the anti-rotation protrusion 23 and the anti-rotation groove 12 can share the torque, ensuring that the connection has strong anti-torsion performance and preventing the connection from becoming loose or having poor contact under torque.

[0037] After the connector 1 and the plug 2 are connected to each other, the sealing gasket 5 can seal the contact gap to prevent water vapor and dust from entering. The sealing gasket 5 is made of elastic rubber and can extend beyond the end face of the mounting protrusion 15 after installation. The above structure can ensure that when the mounting protrusion 15 abuts against the plug 2, the sealing gasket 5 has undergone a certain amount of compression deformation, thus achieving a sealing effect.

[0038] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A connection structure for optical cable interfacing, characterized by, Include: The adapter (1) and the plug-in connector (2) are connected by plug-in connection, and the optical cable (3) is connected at the end of the above two; The front end of the adapter (1) is provided with a connecting slot (11), and the slot wall is provided with a plurality of anti-rotation clamping grooves (12), and the front end of the plug-in connector (2) is fixedly provided with a connecting plug (21) matched with the connecting slot (11), and the side surface is fixedly provided with an anti-rotation convex rib (23) corresponding to the anti-rotation clamping groove (12); Wherein, the outer wall of the adapter (1) and the plug-in connector (2) is fixedly provided with a limiting ring (44), and the first compression cylinder (41) and the second compression cylinder (42) are respectively slidably sleeved on the limiting ring (44), and the first compression cylinder (41) and the second compression cylinder (42) are threadedly connected at the front.

2. The connection structure for optical cable mating according to claim 1, characterized in that: The inner wall of the first compression cylinder (41) and the second compression cylinder (42) is slidably attached to the outer wall of the limiting ring (44), and the front and rear ends of the above two are provided with an outer convex structure, so as to limit the sliding range of the first compression cylinder (41) and the second compression cylinder (42).

3. The connection structure for optical cable mating according to claim 1, characterized in that: The bottom of the connecting slot (11) is provided with a plurality of hole grooves, and the receiving core (13) is embedded in the hole grooves, and the front end of the connecting plug (21) is fixedly provided with a plurality of transmission cores (22) corresponding to the receiving core (13), and when the connecting plug (21) is inserted into the connecting slot (11), the transmission core (22) is inserted into the receiving core (13).

4. The connection structure for optical cable mating according to claim 1, characterized in that: The front end of the second compression cylinder (42) is fixedly provided with a connecting cylinder (43), and the outer wall of the connecting cylinder (43) is provided with a thread, and the inner wall of the front end of the first compression cylinder (41) is provided with a corresponding thread, and the connecting cylinder (43) and the first compression cylinder (41) are threadedly connected.

5. The connection structure for optical cable mating according to claim 1, characterized in that: The front end of the adapter (1) is fixedly provided with a plurality of mounting protrusions (15) around the connecting slot (11), and a sealing gasket ring (5) is sleeved thereon, and the sealing gasket ring (5) is made of elastic rubber material and can exceed the end surface of the mounting protrusion (15) after installation.

6. The connection structure for optical cable mating according to claim 1, characterized in that: The rear side of the first compression cylinder (41) and the second compression cylinder (42) is provided with a sealing rubber ring (45), and when the first compression cylinder (41) and the second compression cylinder (42) are threadedly connected, the sealing rubber rings (45) in the two are attached to the limiting ring (44).

7. A connection structure for optical cable mating according to claim 6, characterized in that: The sealing rubber ring (45) comprises an elastic hollow rubber ring (451), and two symmetrical outer compression rubber sheets (452) are fixedly arranged in the hollow rubber ring (451).

8. The connection structure for optical cable mating according to claim 1, characterized in that: The connecting slot (11) is fixedly provided with a plug shaft (14), and the front end of the connecting plug (21) is provided with an axle groove (24) corresponding in size to the plug shaft (14).

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