A waterproof plug structure for quick connection of ship communication cables

Abstract

This utility model discloses a waterproof plug structure for quick connection of marine communication cables, including a plug assembly, a socket assembly, and a sealing assembly. The plug assembly includes a plug housing, an insertion end disposed at one end of the plug housing, and a locking mechanism disposed on the outer periphery of the plug housing. The socket assembly includes a socket housing, a contact end disposed inside the plug housing to mate with the insertion end, and a hook groove disposed on the outer surface of the contact end to mate with the locking mechanism. The sealing assembly includes an annular main sealing ring disposed on the outer periphery of the insertion end, a corrugated secondary sealing ring disposed inside the contact end, and a water-swellable layer disposed at the port of the insertion end. By cooperating with the flip-up hook in the locking mechanism and the hook groove, combined with the locking head of the limiting ring and the irregular locking groove, the stability of the connection is enhanced, the separation force is increased to resist severe impact, and quick insertion and removal are achieved, replacing the cumbersome operation of traditional threaded connections and solving the problem of not being able to operate quickly in emergency situations.

Description

Technical Field

[0001] This utility model relates to the field of marine electrical connection equipment technology, and in particular to a waterproof plug structure for quick connection of marine communication cables. Background Technology

[0002] In ship communication systems, the reliability and waterproof performance of cable connections directly affect communication quality and equipment safety. As ships become larger and more intelligent, the navigation environment becomes increasingly harsh, including long-term vibration, salt spray corrosion, and underwater operations, placing higher demands on the performance of communication cable connection equipment. However, existing waterproof connectors for ships have several shortcomings: Traditional threaded sealing structures are prone to loosening under long-term vibration, leading to moisture intrusion; the single sealing ring design cannot adapt to the turbulent environment of a ship, posing a risk of water leakage; when connected underwater, it is easy to form residual electrolytic channels in seawater, causing short circuits; threaded connections require 3-5 turns of rotation, making quick insertion and removal impossible in emergencies; installation requires specialized tools, and maintenance is time-consuming.

[0003] To address the aforementioned issues, a waterproof plug structure for quick connection of ship communication cables is provided. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a waterproof plug structure for quick connection of ship communication cables.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: This utility model relates to a waterproof plug structure for quick connection of marine communication cables, comprising a plug assembly, a socket assembly, and a sealing assembly: The plug assembly includes a plug housing, an insertion end disposed at one end of the plug housing, and a locking mechanism disposed on the outer periphery of the plug housing. The socket assembly includes a socket housing, a contact end disposed inside the plug housing to engage with the insertion end, and a mounting groove disposed on the outer surface of the contact end to engage with the locking mechanism. The sealing assembly includes an annular main sealing ring disposed on the outer periphery of the insertion end, a corrugated secondary sealing ring disposed within the contact end, and a water-swellable layer disposed at the insertion end port.

[0006] As a preferred technical solution of this utility model, the locking mechanism includes a plurality of rotatable hooks arranged in a ring and a limiting ring fitted around the outside of the plug housing; The outer peripheral surface of the plug housing is surrounded by multiple grooves, and a spring pin is installed inside the groove. The hook is hinged inside the groove, and the spring pin abuts against the bottom end of the hook. The number of hooks matches the number of hanging slots. The cross-section of the hanging slot is L-shaped, and a wedge-shaped guide surface is provided on the inner side of the end of the hanging slot. The inner diameter of the limiting ring matches the outer diameter of the contact end.

[0007] As a preferred technical solution of this utility model, the outer surface of the contact end is also provided with a locking groove, the locking groove is spaced apart from the hanging groove, and the locking groove is an irregular shape with multiple directions; The inner side of the limiting ring is provided with multiple lock heads that match the locking groove.

[0008] As a preferred technical solution of this utility model, the angle between the wedge-shaped guide surface at the end of the hook groove and the axis of the contact end is 30°-45°, and the barb end of the hook 131 is provided with an inclination angle that matches the wedge-shaped guide surface.

[0009] As a preferred technical solution of this utility model, the main sealing ring is made of fluororubber; The secondary sealing ring is made of silicone rubber, with a wavy protrusion height of 1.5-2mm and a spacing of 3-5mm between adjacent protrusions; The water-swellable layer is made of polyacrylate water-absorbing resin and has a thickness of 2±0.2mm.

[0010] As a preferred technical solution of this utility model, the outer surfaces of the plug housing and the socket housing are coated with a polytetrafluoroethylene anti-corrosion coating.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention uses a main sealing ring, a secondary sealing ring, and a water-swellable layer to form a multi-layer sealing assembly, creating a redundant sealing structure. This solves the problems of single waterproof structure and easy leakage under vibration in the prior art, thus improving waterproof reliability.

[0012] This utility model, through the cooperation of the flip-out hook and the hanging groove in the locking mechanism, combined with the lock head of the limiting ring and the irregular locking groove, not only enhances the stability of the connection and improves the separation force to resist severe impact, but also realizes quick insertion and removal, replacing the cumbersome operation of traditional threaded connection and solving the problem of not being able to operate quickly in emergency situations. Attached Figure Description

[0013] 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: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram of the locking mechanism of this utility model. Figure 3 This is a schematic diagram of the limiting ring structure of this utility model; Figure 4 This is a front view of the overall structure of this utility model when it is separated in its natural state; Figure 5 This is a front view of the overall structure of this utility model when assembled. Figure 6 This is a perspective view of the combined parts when the overall structure of this utility model is assembled; In the diagram: 11. Plug housing; 12. Insertion end; 13. Locking mechanism; 21. Socket housing; 22. Contact end; 23. Hanging groove; 24. Locking groove; 31. Main sealing ring; 32. Secondary sealing ring; 33. Water-swellable layer; 131. Hook; 132. Limiting ring; 133. Groove; 134. Spring pin; 1321. Lock head. Detailed Implementation

[0014] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0015] In the attached diagram, all identical reference numerals refer to the same components.

[0016] Example 1 like Figure 1-6 As shown, this utility model provides a waterproof plug structure for quick connection of ship communication cables, including a plug assembly, a socket assembly, and a sealing assembly: The plug assembly includes a plug housing 11, an insertion end 12 disposed at one end of the plug housing 11, and a locking mechanism 13 disposed on the outer periphery of the plug housing 11. The socket assembly includes a socket housing 21, a contact end 22 disposed inside the plug housing 11 to engage with the insertion end 12, and a mounting groove 23 disposed on the outer surface of the contact end 22 to engage with the locking mechanism 13; The sealing assembly includes an annular main sealing ring 31 disposed on the outer periphery of the insertion end 12, a corrugated secondary sealing ring 32 disposed in the contact end 22, and a water-swellable layer 33 disposed at the port of the insertion end 12.

[0017] Furthermore, the locking mechanism 13 includes a plurality of rotatable hooks 131 arranged around the perimeter and a limiting ring 132 fitted around the outside of the plug housing 11; The outer peripheral surface of the plug housing 11 is surrounded by multiple grooves 133. A spring pin 134 is installed inside the groove 133. The hook 131 is hinged inside the groove 133, and the spring pin 134 abuts against the bottom end of the hook 131. The number of hooks 131 matches the number of hanging slots 23. The cross-section of the hanging slot 23 is L-shaped, and a wedge-shaped guide surface is provided on the inner side of the end of the hanging slot 23. The inner diameter of the limiting ring 132 matches the outer diameter of the contact end 22.

[0018] Four grooves 133 are evenly spaced along the outer periphery of the plug housing 11; each groove 133 is hinged to a hook 131 via a pin, and the barbed end of the hook 131 is machined with an inclination angle matching the wedge-shaped guide surface; a spring pin 134 is installed at the bottom of the groove 133, and the top of the spring pin 134 abuts against the bottom end of the hook 131 to ensure that the hook tilts outward at 15° in its natural state. Four hook grooves 23 are evenly spaced along the outer periphery of the contact end 22, matching the number of hooks 131, and the inner side of the end is machined with a wedge-shaped guide surface to guide the hook 131 to slide in.

[0019] Furthermore, a locking groove 24 is also provided on the outer surface of the contact end 22. The locking groove 24 is spaced apart from the hanging groove 23. The locking groove 24 is an irregular shape with multiple directions. The inner side of the limiting ring 132 is provided with multiple lock heads 1321 that match the locking groove 24.

[0020] Furthermore, the angle between the wedge-shaped guide surface at the end of the hook groove 23 and the axis of the contact end 22 is 30°-45°, and the barb end of the hook 131 is provided with an inclination angle that matches the wedge-shaped guide surface.

[0021] Furthermore, the main sealing ring 31 is made of fluororubber. It is installed in the annular groove of the insertion end 12, and after assembly, the compression is 22%, ensuring a tight fit with the inner wall of the contact end 22. The secondary sealing ring 32 is made of silicone rubber, with a wavy protrusion height of 1.5-2mm and a spacing of 3-5mm between adjacent protrusions. It is installed 5mm inside the contact end 22 at the port, with a wavy protrusion height of 1.8mm and a spacing of 4mm between adjacent protrusions. The top of the protrusion is interference-fitted with the outer circumference of the insertion end 12. The water-swellable layer 33 is made of polyacrylate water-absorbing resin with a thickness of 2±0.2mm. It is embedded in the end face of the insertion end 12; it expands by 350% in distilled water for 24 hours, and its hardness after expansion is 45 Shore A, which can fill tiny gaps.

[0022] Furthermore, the outer surfaces of the plug housing 11 and the socket housing 21 are coated with a polytetrafluoroethylene anti-corrosion coating to improve their resistance to salt spray corrosion.

[0023] Specifically, the insertion end 12 has an annular groove machined around its outer periphery for installing the main sealing ring 31, and an annular groove machined at the port for installing the water-swellable layer 33; the contact end 22 has an annular groove machined on its inner wall for installing the secondary sealing ring 32.

[0024] During assembly, align the plug insertion end 12 with the axis of the socket contact end 22 and push the plug axially: the main sealing ring 31 on the outer periphery of the insertion end 12 abuts against the inner wall of the contact end 22, the secondary sealing ring 32 inside the contact end 22 abuts against the outer periphery of the insertion end 12, and at the same time, the water-swellable layer 33 abuts against the trapezoidal surface inside the contact end 22, forming an interference fit and tight connection.

[0025] Press the hook 131 down so that it is pressed into the hook groove 23, then push the limiting ring 132 to one side of the contact end 22 so that the inner lock head 1321 enters the locking groove 24 and slides along the irregular path to the end to lock, thus completing the locking.

[0026] During separation, the axial pull of the limiting ring 132 away from the socket assembly causes the locking head 1321 to slide off along the locking groove 24. Continuing to apply tension causes the barbed end of the hook 131 to slide along the wedge-shaped guide surface of the hook groove 23, which then flips and disengages it from the hook groove. After disengaging, it springs outward under the action of the spring pin 134, pulling out the plug assembly and completing the separation.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A waterproof plug structure for quick connection of marine communication cables, comprising a plug assembly, a socket assembly, and a sealing assembly, characterized in that: The plug assembly includes a plug housing (11), an insertion end (12) disposed at one end of the plug housing (11), and a locking mechanism (13) disposed on the outer periphery of the plug housing (11). The socket assembly includes a socket housing (21), a contact end (22) disposed inside the plug housing (11) to engage with the insertion end (12), and a mounting groove (23) disposed on the outer surface of the contact end (22) to engage with the locking mechanism (13). The sealing assembly includes an annular main sealing ring (31) disposed on the outer periphery of the insertion end (12), a wavy secondary sealing ring (32) disposed in the contact end (22), and a water-swellable layer (33) disposed at the port of the insertion end (12). The locking mechanism (13) includes a plurality of rotatable hooks (131) arranged around the perimeter and a limiting ring (132) fitted around the outside of the plug housing (11). The outer peripheral surface of the plug housing (11) is surrounded by a plurality of grooves (133), and a spring pin (134) is installed inside the groove (133). The hook (131) is hinged inside the groove (133), and the spring pin (134) abuts against the bottom end of the hook (131). The number of hooks (131) and hanging grooves (23) are matched. The cross-section of the hanging groove (23) is L-shaped, and a wedge-shaped guide surface is provided on the inner side of the end of the hanging groove (23). The inner diameter of the limiting ring (132) matches the outer diameter of the contact end (22).

2. The waterproof plug structure for quick connection of ship communication cables according to claim 1, characterized in that, The outer surface of the contact end (22) is also provided with a locking groove (24), and the locking groove (24) and the hanging groove (23) are spaced apart; The inner side of the limiting ring (132) is provided with a plurality of lock heads (1321) that match the locking groove (24).

3. The waterproof plug structure for quick connection of ship communication cables according to claim 2, characterized in that, The angle between the wedge-shaped guide surface at the end of the hook groove (23) and the axis of the contact end (22) is 30°-45°, and the barb end of the hook (131) is provided with an inclination angle that matches the wedge-shaped guide surface.

4. The waterproof plug structure for quick connection of ship communication cables according to claim 1, characterized in that, The main sealing ring (31) is made of fluororubber. The secondary sealing ring (32) is made of silicone rubber, with a wavy protrusion height of 1.5-2mm and a spacing of 3-5mm between adjacent protrusions; The water-swellable layer (33) is made of polyacrylate water-absorbing resin and has a thickness of 2±0.2mm.

5. The waterproof plug structure for quick connection of ship communication cables according to claim 1, characterized in that, The outer surfaces of the plug housing (11) and socket housing (21) are coated with a polytetrafluoroethylene anti-corrosion coating.

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