Multi-cell underwater rapid plugging connector
By designing the fixing claw and hook structure of the multi-core underwater quick-connect connector, the problem of insufficient sealing of the underwater connector was solved, and the stable connection and reliability of the equipment were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO JURONG ENG & TECH CO LTD
- Filing Date
- 2025-04-14
- Publication Date
- 2026-04-28
AI Technical Summary
Existing underwater connectors have insufficient sealing and are prone to detachment or stripping after long-term use, affecting the normal use of equipment.
A multi-cell underwater quick-connect connector was designed, which adopts a fixed claw and hook claw structure. The first plug and the second plug are tightly connected by rotating the ring. The fixed protrusion and groove, the limiting groove and the limiting protrusion ensure the stable docking of the plug.
It achieves a tight connection of underwater equipment, preventing detachment and slippage, and improving the reliability and service life of the connection.
Smart Images

Figure CN224177665U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of underwater connector technology, specifically a multi-core underwater quick-connect connector. Background Technology
[0002] In underwater mining equipment, submarines, and marine exploration projects, various underwater instruments and equipment require power and data transmission. Current technology typically uses watertight connectors to achieve electrical signal connections between these instruments. A watertight connector consists of two joints: a first joint is fixedly mounted on one instrument, and a second joint is connected to the other. The electrical connection between the two instruments is achieved by connecting the first and second joints. However, in existing technologies, the first and second joints can be directly plugged in. This direct plugging connection lacks sufficient sealing and may detach over time. Additionally, some first and second joints are connected by threads, which may strip after prolonged use, affecting normal operation. Utility Model Content
[0003] In order to overcome the above-mentioned defects in the prior art, this utility model provides a multi-cell underwater quick-connect connector.
[0004] A multi-cell underwater quick-connect connector includes a first plug and a second plug. The first plug includes a protective shell. A mounting base is provided on the outer wall of the protective shell near the second plug. A fixing claw is rotatably mounted on the mounting base via a rotating shaft. A fixing protrusion is provided on the lower end face of the fixing claw near the rotating shaft. A groove is provided on the protective shell below the fixing protrusion. The fixing protrusion abuts against the side wall of the groove. The end of the fixing claw away from the rotating shaft is connected to a hook claw. A sealing ring is provided at the connection between the protective shell and the second plug.
[0005] Furthermore, the hook is mounted on a fixed plate via a telescopic rod. The fixed plate is located on a base, and the upper surface of the base is a first inclined surface that slopes towards the fixed hook. A spring is sleeved on the outer periphery of the telescopic rod, with the top of the spring connected to the fixed plate and the bottom connected to the hook.
[0006] Furthermore, the base and the hook are provided with a second inclined surface and a third inclined surface on the side away from the fixed plate, respectively.
[0007] Furthermore, the base is mounted on a rotating ring, which is rotatably connected to the second plug via ball bearings. Rotating the rotating ring causes the fixing claw to move to the upper surface of the base and connect with the hook claw.
[0008] Furthermore, the rotating ring is a ring structure formed by splicing two semi-circular rings.
[0009] Furthermore, the inner wall of the protective shell near the second plug end is provided with a limiting groove, and the second plug is provided with a limiting protrusion, the limiting protrusion abutting against the wall of the limiting groove.
[0010] Due to the adoption of the above technical solutions, the beneficial technical effects of this utility model are as follows: When the first plug and the second plug are connected, the fixing protrusion of the fixing claw abuts against the side wall of the groove on the first plug near the second plug, thereby applying a force to the first plug to move towards the second plug, which is conducive to the tight connection between the first plug and the second plug. The fixing claw is rotatably mounted on the protective shell, and the side of the fixing claw away from the fixing protrusion is connected to the hook claw mounted on the second plug, thereby ensuring the connection between the first plug and the second plug. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of a multi-cell underwater quick-connect connector according to the present invention;
[0012] Figure 2 This is a front view of a multi-cell underwater quick-connect connector according to this utility model;
[0013] Figure 3 This is a bottom view of a multi-cell underwater quick-connect connector according to the present invention.
[0014] Figure 4 This utility model Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;
[0015] Figure 5 This utility model Figure 4 Enlarged view of region B in the middle;
[0016] Figure 6 This is a schematic diagram of the transfer ring structure of this utility model.
[0017] In the diagram: 1. First plug; 2. Second plug; 3. Protective shell; 4. Mounting base; 5. Fixing claw; 6. Fixing protrusion; 7. Groove; 8. Hook; 9. Telescopic rod; 10. Fixing plate; 11. Base; 12. First inclined surface; 13. Spring; 14. Second inclined surface; 15. Third inclined surface; 16. Rotary ring; 17. Ball bearing; 18. Limiting groove; 19. Limiting protrusion. Detailed Implementation
[0018] To more clearly illustrate the technical solution of this utility model, the following description is made in conjunction with the accompanying drawings. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings and embodiments without creative effort, and all of them fall within the protection scope of this utility model.
[0019] according to Figure 1-6 As shown, a multi-cell underwater quick-connect connector includes a first plug 1 and a second plug 2. The first plug 1 includes a protective shell 3. A mounting base 4 is provided on the outer wall of the protective shell 3 near the second plug 2. A fixing claw 5 is rotatably mounted on the mounting base 4 via a rotating shaft. A fixing protrusion 6 is provided on the lower end face of the fixing claw 5 near the rotating shaft. A groove 7 is provided on the protective shell 3 below the fixing protrusion 6. The fixing protrusion 6 abuts against the side wall of the groove 7. The end of the fixing claw 5 away from the rotating shaft is connected to a hook claw 8. A sealing ring is provided at the connection between the protective shell 3 and the second plug 2.
[0020] In the above specific technical solution, when the first plug 1 and the second plug 2 are connected, the fixing protrusion 6 of the fixing claw 5 abuts against the side wall of the groove 7 on the first plug 1 near the second plug 2, thereby applying a force to the first plug 1 to move towards the second plug 2, which is conducive to the tight connection between the first plug 1 and the second plug 2. The fixing claw 5 is rotatably mounted on the protective shell 3, and the side of the fixing claw 5 away from the fixing protrusion 6 is connected to the hook claw 8 mounted on the second plug 2, thereby ensuring the connection between the first plug 1 and the second plug 2.
[0021] The hook 8 is mounted on the fixed plate 10 via the telescopic rod 9. The fixed plate 10 is located on the base 11. The upper surface of the base 11 is a first inclined surface 12 that is inclined towards the fixed claw 5. A spring 13 is sleeved on the outer periphery of the telescopic rod 9. The top of the spring 13 is connected to the fixed plate 10, and the bottom is connected to the hook 8.
[0022] The base 11 and the hook 8 are respectively provided with a second inclined surface 14 and a third inclined surface 15 on the side away from the fixed plate 10.
[0023] The base 11 is mounted on the rotating ring 16, which is rotatably connected to the second plug 2 via ball bearings 17. Rotating the rotating ring 16 causes the fixing claw 5 to move to the upper surface of the base 11 and connect with the hook claw 8.
[0024] In the above specific technical solution, the first plug 1 and the second plug 2 are first plugged together. At this time, the fixing claw 5 and the hook claw 8 are staggered. Then, the rotating ring 16 is rotated. When the fixing claw 5 contacts the side wall of the fixing plate 10, the rotation stops. At this time, the hook claw 8 moves to the top of the fixing claw 5. The fixing claw 5 is at the top of the base 11. The upper end surface of the base 11 is the first inclined surface 12. The first inclined surface 12 gives the fixing claw 5 a force to rotate around the axis, so that the fixing protrusion 6 of the fixing claw 5 abuts against the side wall of the groove 7 on the first plug 1 near the second plug 2, which is conducive to the tight connection of the first plug 1 and the second plug 2. The lower end surface of the hook claw 8 is provided with a connecting groove, and the top of the fixing claw 5 is provided with a connecting protrusion. When the hook claw 8 is located directly above the fixing claw 5, the connecting protrusion and the connecting groove cooperate to connect, thereby realizing the connection of the fixing claw 5 and the hook claw 8 and preventing the first tap and the second plug 2 from separating.
[0025] Specifically, this plug-in connector is easy to use. By rotating the rotating ring 16, a tight connection between the first plug 1 and the second plug 2 can be achieved. The second inclined surface 14 and the third inclined surface 15 are provided so that during the rotation of the rotating ring 16, the base 11 moves below the fixing claw 5, and the hook claw 8 moves above the fixing claw 5. Preferably, multiple sets of fixing claw 5 and hook claw 8 structures can be provided. This utility model only shows two sets, thereby further increasing the tightness of the connection between the first plug 1 and the second plug 2.
[0026] The rotating ring 16 is a ring structure composed of two semicircular rings joined together. The semicircular rings are connected by bolts. Designing the rotating ring 16 into two parts facilitates its installation.
[0027] The protective shell 3 has a limiting groove 18 on its inner wall near the second plug 2, and the second plug 2 has a limiting protrusion 19. The limiting protrusion 19 abuts against the groove wall of the limiting groove 18. The limiting protrusion 19 and the limiting groove 18 help to limit the depth of the second plug 2 inserted into the first plug 1.
[0028] The above embodiments are merely exemplary embodiments of the present utility model and are not intended to limit the present utility model. The scope of protection of the present utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present utility model.
Claims
1. A multi-cell underwater quick-connect connector, comprising a first plug (1) and a second plug (2), characterized in that, The first plug (1) includes a protective shell (3). The outer wall of the protective shell (3) near the second plug (2) is provided with a mounting base (4). The mounting base (4) is rotatably mounted with a fixing claw (5) via a rotating shaft. The lower end face of the fixing claw (5) near the rotating shaft is provided with a fixing protrusion (6). The protective shell (3) is provided with a groove (7) below the fixing protrusion (6). The fixing protrusion (6) abuts against the side wall of the groove (7). The end of the fixing claw (5) away from the rotating shaft is connected to a hook claw (8). A sealing ring is provided at the connection between the protective shell (3) and the second plug (2).
2. The multi-cell underwater quick-connect connector according to claim 1, characterized in that, The hook (8) is mounted on the fixed plate (10) via the telescopic rod (9). The fixed plate (10) is located on the base (11). The upper surface of the base (11) is a first inclined surface (12) that is inclined toward the fixed claw (5). A spring (13) is sleeved on the outer periphery of the telescopic rod (9). The top of the spring (13) is connected to the fixed plate (10), and the bottom is connected to the hook (8).
3. A multi-cell underwater quick-connect connector according to claim 2, characterized in that, The base (11) and the hook (8) are respectively provided with a second inclined surface (14) and a third inclined surface (15) on the side away from the fixed plate (10).
4. A multi-cell underwater quick-connect connector according to claim 3, characterized in that, The base (11) is mounted on the rotating ring (16), which is rotatably connected to the second plug (2) via a ball (17). Rotating the rotating ring (16) causes the fixing claw (5) to move to the upper surface of the base (11) and connect with the hook claw (8).
5. A multi-cell underwater quick-connect connector according to claim 4, characterized in that, The rotating ring (16) is a ring structure formed by splicing two semi-circular rings.
6. A multi-cell underwater quick-connect connector according to claim 5, characterized in that, The protective shell (3) has a limiting groove (18) on the inner wall near the second plug (2), and the second plug (2) has a limiting protrusion (19), which abuts against the groove wall of the limiting groove (18).