An airtight structure for marine communication cables
By combining the design of a conical extrusion ring and a threaded meshing groove, the sealing problem of traditional cable joints under vibration and external force is solved, achieving adaptive dynamic sealing and long-term reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG CHINA SHIPPING CABLE CO LTD
- Filing Date
- 2025-04-21
- Publication Date
- 2026-05-26
AI Technical Summary
Traditional cable joints cannot achieve adaptive dynamic sealing under vibration environments, and are prone to air leakage due to separation of rigid contact surfaces. Furthermore, they are prone to stress concentration under thermal expansion and contraction or external impact, which can lead to cracking of the sealing interface.
The tapered extrusion ring design fills the gap between the connector and the cable through progressive extrusion, and is combined with a retaining ring and threaded engagement groove to achieve mechanical locking and ensure a tight seal.
It significantly improves the airtightness of cable joints, maintaining a dynamic seal under vibration and external forces, preventing loosening, and ensuring long-term reliability.
Smart Images
Figure CN224289266U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marine cables, specifically to an airtight structure for marine communication cables. Background Technology
[0002] Cable connectors are specialized components used to connect cables to cables or cables to equipment, ensuring efficient and safe transmission of power or signals. Their core function is to maintain a low-resistance conductive path between conductors and to effectively isolate external interference through a multi-layer structure design, preventing problems such as leakage and short circuits.
[0003] Traditional cable joints cannot achieve adaptive dynamic sealing with a tapered structure. Under vibration, they are prone to air leakage due to separation of the rigid contact surface. Furthermore, the rigid locking structure of traditional cable joints is prone to stress concentration under thermal expansion and contraction or external impact, which can lead to cracking of the sealing interface. Utility Model Content
[0004] The purpose of this invention is to provide an airtight structure for marine communication cables to solve the problem that traditional cable joints cannot adaptively and dynamically seal.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an airtight structure for marine communication cables, including a connector. The outer surface of the connector has six grooves at both ends. Each groove has a slider slidably connected inside. Pull rings are fixedly connected to the outer surfaces of the six sliders at the front and the six sliders at the rear. Connecting cylinders are fixedly connected to the opposite surfaces of the two pull rings. Fixing rings are fixedly connected to the opposite surfaces of the two connecting cylinders. Conical extrusion rings are fixedly connected to the opposite surfaces and inner rings of the two fixing rings.
[0006] Preferably, the outer diameter of the front end of the tapered extrusion ring is consistent with the inner diameter of the connector, and the inner diameter of the rear end of the tapered extrusion ring is consistent with the inner diameter of the connector.
[0007] Preferably, connecting rings are fixedly connected to the adjacent surfaces of the two fixed rings, and connecting grooves are provided at both ends of the joint.
[0008] Preferably, the connecting ring is adaptively matched with the connecting groove, and the inner diameter of the connecting ring is larger than the outer diameter of the rear end of the tapered extrusion ring.
[0009] Preferably, the outer surface of the connector is provided with threaded grooves at both ends, and the inner wall of the connecting cylinder is provided with a threaded engagement groove at one end.
[0010] Preferably, the thread engagement groove and the thread groove are adaptively matched, the length of the connecting cylinder is the same as the length of the connecting ring, and the length of the thread groove is half the length of the connecting cylinder.
[0011] Preferably, the outer surface of the connector has a rotating groove at both ends, the rotating groove is connected to the sliding groove, and the length of the rotating groove is the same as the length of the threaded groove.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] The gap between the connector and the cable is filled by the progressive compression of a conical extrusion ring. The outer diameter of the front end matches the inner diameter of the connector, and the inner diameter of the rear end matches the inner diameter of the connector, forming a tight fit. The conical shape generates radial expansion force when moving axially, effectively enhancing the sealing contact pressure and significantly improving airtightness. At the same time, the conical shape can adapt to deformation when the cable vibrates, maintaining a dynamic sealing effect.
[0014] The retaining ring drives the connecting ring to insert into the connecting groove of the connector. Mechanical locking is achieved through the interference fit of the annular connecting groove, preventing axial displacement. The design of the connecting ring's inner diameter being larger than the outer diameter of the tapered extrusion ring's rear end avoids movement interference and ensures smooth insertion.
[0015] When the threaded groove of the connecting cylinder engages with the threaded groove of the butt joint, the self-locking characteristic of the thread is used to fix the position of the conical extrusion ring, resisting loosening caused by vibration or external force, and ensuring long-term sealing reliability.
[0016] In the initial stage, the tapered extrusion ring is quickly positioned by pulling the pull ring in a straight line along the slide groove. When the slider enters the rotating groove, the rotating pull ring triggers the thread engagement, converting the linear pulling force into the rotational propulsion force, reducing the operational intensity, and realizing a highly efficient assembly process of "pulling and rotating".
[0017] The length of the threaded groove is half that of the connecting cylinder, ensuring that the remaining stroke of the conical extrusion ring can be precisely controlled by rotation when the threads are engaged, avoiding over-tightening or under-tightening and improving assembly consistency. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of an airtight structure for a marine communication cable according to an embodiment of the present invention.
[0019] Figure 2 This is a diagram illustrating the connector in an embodiment of this utility model;
[0020] Figure 3 This is a sectional view of the connector in an embodiment of the present invention;
[0021] Figure 4 As an embodiment of this utility model Figure 3 Enlarged view of part A;
[0022] Figure 5 This is a disassembled view of the pull ring, connecting cylinder, and fixing ring in an embodiment of this utility model.
[0023] In the diagram: 1. Connecting joint; 2. Pull ring; 3. Connecting cylinder; 4. Slide groove; 5. Rotary groove; 6. Threaded groove; 7. Fixing ring; 8. Conical extrusion ring; 9. Connecting ring; 10. Connecting groove; 11. Threaded engagement groove; 12. Slider. Detailed Implementation
[0024] 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.
[0025] Example 1
[0026] Combination Figure 1 - Figure 5 A marine communication cable airtight structure includes a connector 1. The outer surface of the connector 1 has six grooves 4 at both ends. Each groove 4 has a slider 12 slidably connected inside. Pull rings 2 are fixedly connected to the outer surfaces of the six sliders 12 at the front and the six sliders 12 at the rear. Connecting cylinders 3 are fixedly connected to the far sides of the two pull rings 2. Fixing rings 7 are fixedly connected to the far sides of the two connecting cylinders 3. Conical extrusion rings 8 are fixedly connected to the far sides and inner rings of the two fixing rings 7.
[0027] In actual operation, the two cables are connected by the connector 1. Then, the pull ring 2 drives the six sliders 12 to slide along the six grooves 4, which in turn drives the connecting cylinder 3 and the fixing ring 7 to move together. This causes the conical extrusion ring 8 to move towards the gap between the connector 1 and the cable, so that the gap between the connector 1 and the cable is filled by the conical extrusion ring 8, which increases the airtightness between the cable and the connector 1.
[0028] See Figure 3 The outer diameter of the front end of the tapered extrusion ring 8 is the same as the inner diameter of the connector 1, and the inner diameter of the rear end of the tapered extrusion ring 8 is the same as the inner diameter of the connector 1.
[0029] See Figure 3 Two fixed rings 7 are fixedly connected to each other on their close surfaces, and connecting grooves 10 are provided at both ends of the connector 1.
[0030] Specifically, during the movement of the fixed ring 7 and the conical extrusion ring 8, the connecting ring 9 will also move together. During the movement, the connecting ring 9 will align with and insert into the connecting groove 10, so that the connecting ring 9 and the connecting groove 10 will dock and press together, thereby increasing the stability of the fixed ring 7, which in turn increases the stability of the conical extrusion ring 8, thus ensuring the airtightness of the conical extrusion ring 8.
[0031] See Figure 4 The connecting ring 9 and the connecting groove 10 are adaptively matched, and the inner diameter of the connecting ring 9 is larger than the outer diameter of the rear end of the tapered extrusion ring 8.
[0032] See Figure 2 , Figure 3 and Figure 5 The outer surface of the connector 1 has threaded grooves 6 at both ends, and the inner wall of the connecting cylinder 3 has a threaded engagement groove 11 at one end.
[0033] Specifically, when the connecting ring 9 has been inserted halfway into the connecting groove 10, the thread engagement groove 11 is located at one end of the thread groove 6, and the slider 12 moves into the interior of the rotating groove 5. At this time, rotating the pull ring 2 causes the connecting cylinder 3 and the fixed ring 7 to rotate together, so that the thread engagement groove 11 engages with the thread groove 6. Continuing to rotate the pull ring 2 allows the conical extrusion ring 8 and the connecting ring 9 to continue moving. Through rotational force, the part of the connecting ring 9 that is not inserted into the connecting groove 10 and the part of the conical extrusion ring 8 that is not inserted into the connector 1 are completely inserted into the corresponding positions. With the help of the rotational force of the thread engagement groove 11 and the thread groove 6, the conical extrusion ring 8 can be inserted between the connector 1 and the cable more quickly and effortlessly.
[0034] Meanwhile, the self-locking capability of the threaded engagement groove 11 and the threaded groove 6 allows the conical compression ring 8 to be automatically fixed after it is fully inserted between the connector 1 and the cable, thereby preventing the conical compression ring 8 from loosening during long-term use.
[0035] See Figure 3 and Figure 5 The threaded meshing groove 11 and the threaded groove 6 are adaptively matched. The length of the connecting cylinder 3 is the same as the length of the connecting ring 9, and the length of the threaded groove 6 is half the length of the connecting cylinder 3.
[0036] See Figure 2 and Figure 3 The outer surface of the connector 1 has rotating grooves 5 at both ends. The rotating grooves 5 are connected to the sliding grooves 4. The length of the rotating grooves 5 is the same as the length of the threaded grooves 6.
[0037] 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 the 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. A gas-tight structure for a marine communication cable, comprising a connector (1), characterized in that: The outer surface of the connector (1) is provided with six sliding grooves (4) at both ends. Each sliding groove (4) is slidably connected to a slider (12). Pull rings (2) are fixedly connected to the outer surfaces of the six sliders (12) at the front and the six sliders (12) at the rear. Connecting cylinders (3) are fixedly connected to the far-away surfaces of the two pull rings (2). Fixing rings (7) are fixedly connected to the far-away surfaces of the two connecting cylinders (3). Conical extrusion rings (8) are fixedly connected to the far-away surfaces and inner rings of the two fixing rings (7).
2. The airtight structure of a marine communication cable according to claim 1, characterized in that: The outer diameter of the front end of the tapered extrusion ring (8) is consistent with the inner diameter of the connector (1), and the inner diameter of the rear end of the tapered extrusion ring (8) is consistent with the inner diameter of the connector (1).
3. The airtight structure of a marine communication cable according to claim 2, characterized in that: Both of the two fixed rings (7) are fixedly connected to the adjacent surfaces of the two fixed rings (9), and both ends of the connector (1) are provided with connecting grooves (10).
4. The airtight structure of a marine communication cable according to claim 3, characterized in that: The connecting ring (9) is adapted to the connecting groove (10), and the inner diameter of the connecting ring (9) is larger than the outer diameter of the rear end of the tapered extrusion ring (8).
5. The airtight structure of a marine communication cable according to claim 2, characterized in that: The outer surface of the connector (1) is provided with threaded grooves (6) at both ends, and the inner wall of the connecting cylinder (3) is provided with a threaded meshing groove (11) at one end.
6. The airtight structure of a marine communication cable according to claim 5, characterized in that: The threaded engagement groove (11) and the threaded groove (6) are adaptively matched, the length of the connecting cylinder (3) is consistent with the length of the connecting ring (9), and the length of the threaded groove (6) is half the length of the connecting cylinder (3).
7. The airtight structure of a marine communication cable according to claim 6, characterized in that: The outer surface of the connector (1) is provided with rotating grooves (5) at both ends. The rotating grooves (5) are connected to the sliding grooves (4). The length of the rotating grooves (5) is the same as the length of the threaded grooves (6).