Marine submersible plug

By designing a plug-in and protective structure for marine submersible plugs, the problems of loosening and damage to the plugs under turbulence and water impact have been solved, achieving a stable connection and convenient assembly and disassembly, and providing good protection.

CN224472804UActive Publication Date: 2026-07-07YIZHENG FENGYUAN MARINE ELECTRIC CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YIZHENG FENGYUAN MARINE ELECTRIC CO LTD
Filing Date
2025-08-18
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing marine submersible plugs are prone to loosening due to bumps during navigation, and are easily damaged during disassembly and assembly and by water impact, making them inconvenient to use.

Method used

A marine submersible plug with a plug-in structure and a protective structure was designed. The plug-in structure achieves a stable connection through ball grooves and snap-fit ​​balls, while the protective structure prevents water penetration and external impact through a retractable support frame and waterproof cloth.

Benefits of technology

It ensures a secure connection of the plug in the underwater environment, prevents loosening, provides a convenient assembly and disassembly process, and effectively protects the plug from water flow and vibration.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a marine diving plug, including a plug-in structure: a protective structure is fixedly provided on the upper side of the plug-in structure; the plug-in structure includes a second main post, a ball groove, a snap-fit ​​ball, a sliding fixing post, a third spring, and a limiting ring; the ball groove is opened in the inner cavity of the second main post, the snap-fit ​​ball is movably disposed in the inner cavity of the ball groove, and the sliding fixing post is movably disposed on the outer side of the second main post. This utility model features a plug-in structure with multiple ball grooves inside the second main post, each containing a snap-fit ​​ball. When the plug is inserted into the socket, the snap-fit ​​ball retracts into the ball groove under external pressure. After the plug is fully inserted, the snap-fit ​​ball pops out and snaps into the groove of the first main post, thus securing the plug. The plug-in structure ensures a stable connection of the plug in an underwater environment, preventing loosening due to water flow or vibration, and provides excellent convenience when replacing the plug body, saving time and effort.
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Description

Technical Field

[0001] This utility model relates to the field of marine plug technology, specifically a marine diving plug. Background Technology

[0002] Marine submersible connectors are primarily used to provide power to hull-mounted lighting and signaling equipment, anchor lights, and decorative lights on pressure vessels. In actual ship operations, the marine environment is extremely harsh, with high humidity and strong corrosive salt spray, placing high demands on the connectors used on board. Existing marine submersible connectors are prone to loosening during navigation due to turbulence, making disassembly and reassembly inconvenient, and they are easily damaged by water impact.

[0003] Publication number CN203466355U discloses a plug, particularly a marine diving plug, belonging to the field of electrical manufacturing technology. It includes a housing, a connecting tube on the lower side of the housing, a stepped section inside the connecting tube, and, from the stepped section outwards, a metal washer, a rubber washer, another metal washer, and an interface. A plug assembly is located at the upper end of the housing, and a stopcock is provided in the radial space between the plug assembly and the housing. This utility model has a simple structure, is easy to use, has good waterproof performance, and is highly corrosion-resistant.

[0004] Regarding the aforementioned prior art, the inventor believes it has the following shortcomings: The marine submersible plug has a connecting tube on the lower side of its housing, with a step inside the connecting tube. From the step outwards, a metal washer, a rubber washer, another metal washer, and an interface are arranged sequentially. A plug assembly is located at the upper end of the housing, and a stopcock is provided in the radial space between the plug assembly and the housing. While this invention has a simple structure, is easy to use, has good waterproofing, and is highly corrosion-resistant, the existing marine submersible plug is prone to loosening during navigation due to bumps, making disassembly and assembly of plug parts inconvenient. Furthermore, the plug is easily damaged by water impact. Utility Model Content

[0005] The purpose of this invention is to provide a marine submersible plug to solve the problems mentioned in the background art. The background art describes a marine submersible plug with a connecting tube on the lower side of the housing, a stepped section inside the connecting tube, and from the stepped section outwards, a metal washer, a rubber washer, another metal washer, and an interface. The upper end of the housing contains a plug assembly, and a stopcock is provided in the radial space between the plug assembly and the housing. This invention has a simple structure, is easy to use, has good waterproofing, and is highly corrosion-resistant. However, existing marine submersible plugs are prone to loosening during navigation due to bumps, making disassembly and assembly of plug parts inconvenient. Furthermore, the plug is easily damaged by water impact.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a marine diving plug, including a plug-in / plug-out structure:

[0008] A protective structure is fixedly provided on the upper side of the plug-in structure, and a plug body is fixedly provided on one side of the plug-in structure;

[0009] The insertion and removal structure includes a second main post, a ball groove, a snap-fit ​​ball, a sliding fixing post, a third spring, and a limiting ring.

[0010] The spherical groove is formed in the inner cavity of the second main column, the snap-fit ​​sphere is movably disposed in the inner cavity of the spherical groove, the sliding fixing column is movably disposed on the outer side of the second main column, the third spring is fixedly connected to one side of the sliding fixing column, and the limiting ring is fixedly connected to the outer side of the second main column.

[0011] Furthermore, the ball groove is provided in multiple ways in the inner cavity of the second main column, the snap-fit ​​ball is provided in multiple ways in the ball groove, the second main column is provided with a protruding post, and the sliding fixed post is connected to the protruding post through the third spring.

[0012] Furthermore, the plug-in structure also includes a main post, a bottom post, a spring, a fixing post, and a connector;

[0013] The bottom column is fixedly connected to the inner cavity of the main column, the spring is fixedly connected to one side of the bottom column, the fixing column is movably disposed in the inner cavity of the bottom column, and the connector is fixedly connected to one side of the fixing column.

[0014] Furthermore, the outer wall of the main column is provided with a groove, the snap-fit ​​ball is movably disposed on one side of the groove, the main column is connected to the bottom column and the spring, the spring is disposed on the outside of the bottom column, and the bottom column is connected to the connector through the spring.

[0015] Furthermore, the plug-in structure also includes a second connector, a second fixing post, a second base post, and a second spring;

[0016] The second connector is movably disposed on one side of the first connector, the second fixed post is fixedly connected to one side of the second connector, the second bottom post is movably disposed on the outside of the second fixed post, the second spring is fixedly connected to one side of the second bottom post, and the second bottom post is connected to the second connector via the second spring.

[0017] Furthermore, the protective structure includes a fixed base plate, a third fixed column, a first connecting rod, a first supporting column, a second connecting rod, a third connecting rod, a second supporting column, and a fourth fixed column;

[0018] The fixed base plate is fixedly connected to one side of the sliding fixed column, the fixed column three is fixedly connected to one side of the fixed base plate, the connecting rod one is movably disposed on one side of the fixed column three, the support column one is movably connected to one side of the connecting rod one, the connecting rod two is movably disposed on one side of the support column one, the connecting rod three is movably disposed on one side of the connecting rod two, the support column two is movably disposed on one side of the connecting rod three, and the fixed column four is movably disposed on one side of the support column two.

[0019] Furthermore, the fixed column three is connected to the support column one via the connecting rod one, the support column one is connected to the connecting rod three via the connecting rod two, the connecting rod three is connected to the fixed column four via the support column two, and the fixed column four is fixedly installed on one side of the fixed base plate.

[0020] Furthermore, the protective structure also includes support columns and a waterproof fabric;

[0021] The third support column is fixedly installed on one side of the fourth support column, the waterproof cloth is fixedly connected to the upper side of the third support column, and the third support column, the first support column, and the second support column are all installed on the lower side of the waterproof cloth.

[0022] This utility model has the following beneficial effects:

[0023] I. This utility model features a plug-in / plug-out structure. Multiple spherical grooves are formed within the main column, each containing a movable locking ball. When the plug is inserted into the socket, the locking ball retracts into the groove under external pressure. Once the plug is fully inserted, the locking ball pops out and engages with the groove in the main column, securing the plug. This plug-in / plug-out structure ensures a stable connection of the plug in underwater environments, preventing loosening due to water flow or vibration. It also provides excellent convenience, saving time and effort, when the plug body needs to be replaced.

[0024] Second, based on the above-mentioned beneficial effects, a protective structure is also provided. When the plug body is inserted, the operator can pull the support column one to the right. Under the action of connecting rod two and connecting rod three, the support column two will move to the right, ultimately causing the waterproof cloth to extend to achieve a protective effect. When it is necessary to retract the waterproof cloth, the operator can press down on the connection between connecting rod two and connecting rod three. At this time, connecting rod two and connecting rod three will fold. Then, push the support column one to the left, and finally the protective structure can be retracted. Through the setting of the protective structure, it is possible to effectively prevent water penetration and external impact, and provide good protection for the plug part. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0027] Figure 2 This is a schematic diagram of the connection of the main column of the plug-in structure of this utility model;

[0028] Figure 3 This is a schematic diagram of the connection between the two main columns of the plug-in structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the connection of the fixed base plate of the protective structure of this utility model.

[0030] The attached diagram lists the components represented by each number as follows:

[0031] In the diagram: 1. Plug-in structure; 2. Protective structure; 3. Plug body; 101. Main post one; 102. Bottom post one; 103. Spring one; 104. Fixing post one; 105. Connector one; 106. Connector two; 107. Fixing post two; 108. Bottom post two; 109. Spring two; 110. Main post two; 111. Ball groove; 112. Snap-on ball; 113. Sliding fixing post; 114. Spring three; 115. Limiting ring; 201. Fixing base plate; 202. Fixing post three; 203. Connecting rod one; 204. Support post one; 205. Connecting rod two; 206. Connecting rod three; 207. Support post two; 208. Fixing post four; 209. Support post three; 210. Waterproof cloth. Detailed Implementation

[0032] 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.

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0034] Please see Figure 1-4 As shown, this utility model is a marine diving plug, including a plug-in structure 1:

[0035] A protective structure 2 is fixedly provided on the upper side of the plug-in structure 1, and a plug body 3 is fixedly provided on one side of the plug-in structure 1.

[0036] The plug-in structure 1 includes a second main post 110, a ball groove 111, a snap-fit ​​ball 112, a sliding fixed post 113, a third spring 114, and a limiting ring 115;

[0037] The ball groove 111 is opened in the inner cavity of the second main column 110, the snap-fit ​​ball 112 is movably disposed in the inner cavity of the ball groove 111, the sliding fixed column 113 is movably disposed on the outer side of the second main column 110, the spring 3 114 is fixedly connected to one side of the sliding fixed column 113, and the limiting ring 115 is fixedly connected to the outer side of the second main column 110.

[0038] After the second main column 110 is fully inserted, the snap-fit ​​ball 112 pops out and snaps into the slot of the first main column 101, thus fixing the second main column 110.

[0039] Multiple ball grooves 111 are provided in the inner cavity of the second main column 110, and multiple snap-fit ​​balls 112 are movably provided in the ball grooves 111. The second main column 110 is provided with a protruding post, and the sliding fixed post 113 is connected to the protruding post through the third spring 114.

[0040] The plug-in structure 1 also includes a main post 101, a bottom post 102, a spring 103, a fixing post 104, and a connector 105;

[0041] The bottom column 102 is fixedly connected to the inner cavity of the main column 101, the spring 103 is fixedly connected to one side of the bottom column 102, the fixing column 104 is movably disposed in the inner cavity of the bottom column 102, and the connector 105 is fixedly connected to one side of the fixing column.

[0042] The outer wall of the main column 101 is provided with a groove, and the snap-fit ​​ball 112 is movably disposed on one side of the groove. The main column 101 is connected to the bottom column 102 and the spring 103. The spring 103 is disposed on the outside of the bottom column 102, and the bottom column 102 is connected to the connector 105 through the spring 103.

[0043] The limiting ring 115 is used to limit the range of movement of the sliding fixed column 113 and prevent excessive displacement.

[0044] The plug-in structure 1 also includes a connector 2 106, a fixing post 2 107, a bottom post 2 108, and a spring 2 109;

[0045] Connector 2 106 is movably located on one side of connector 1 105, fixing post 2 107 is fixedly connected to one side of connector 2 106, bottom post 2 108 is movably located on the outside of fixing post 2 107, spring 2 109 is fixedly connected to one side of bottom post 2 108, and bottom post 2 108 is connected to connector 2 106 through spring 2 109.

[0046] Connector 2 106 is connected to base post 2 108 via spring 2 109. The elastic force of spring 2 109 ensures tight contact between connector 2 106 and connector 1 105, maintaining a good electrical connection even under vibration or water flow impact.

[0047] Working principle: Multiple spherical grooves 111 are formed within the main column 2 110, each containing a movable locking ball 112. When the plug is inserted into the socket, the locking ball 112 retracts into the groove 111 under external pressure. After the plug is fully inserted, the locking ball 112 pops out and engages with the slot in the main column 101, thus securing the plug. This plug-in / plug-out structure 1 ensures a stable connection of the plug in an underwater environment, preventing loosening due to water flow or vibration. It also provides excellent convenience, saving time and effort, when the plug body 3 needs to be replaced.

[0048] This step, through the design of the plug-in structure 1, ensures a stable connection of the plug in the underwater environment, prevents loosening due to water flow or vibration, and provides good convenience when the plug body 3 needs to be replaced, saving time and effort.

[0049] Please see Figure 1-4 As shown, this embodiment, based on the above embodiment, also includes a protective structure 2.

[0050] The protective structure 2 includes a fixed base plate 201, a fixed column 3 202, a connecting rod 1 203, a support column 1 204, a connecting rod 205, a connecting rod 3 206, a support column 2 207, and a fixed column 4 208;

[0051] The fixed base plate 201 is fixedly connected to one side of the sliding fixed column 113, the fixed column three 202 is fixedly connected to one side of the fixed base plate 201, the connecting rod one 203 is movably mounted on one side of the fixed column three 202, the support column one 204 is movably connected to one side of the connecting rod one 203, the connecting rod two 205 is movably mounted on one side of the support column one 204, the connecting rod three 206 is movably mounted on one side of the connecting rod two 205, the support column two 207 is movably mounted on one side of the connecting rod three 206, and the fixed column four 208 is movably mounted on one side of the support column two 207.

[0052] Support column 1 204, support column 207, and support column 3 209 are interconnected by connecting rod 1 203, connecting rod 205, and connecting rod 3 206, forming a movable support frame. When external water pressure or impact is applied to the waterproof fabric 210, the support frame can adjust its shape through the linkage of the connecting rods to distribute the pressure and avoid structural damage caused by excessive local stress.

[0053] Fixed column 3 202 is connected to support column 1 204 via connecting rod 1 203. Support column 1 204 is connected to connecting rod 3 206 via connecting rod 2 205. Connecting rod 3 206 is connected to fixed column 4 208 via support column 2 207. Fixed column 4 208 is fixedly installed on one side of fixed base plate 201.

[0054] The protective structure 2 also includes support column 209 and waterproof cloth 210;

[0055] Support column 3 209 is fixedly installed on one side of fixed column 4 208, and waterproof cloth 210 is fixedly connected to the upper side of support column 3 209. Support column 3 209, support column 1 204 and support column 2 207 are all installed on the lower side of waterproof cloth 210.

[0056] The waterproof fabric 210 can be stretched and extended by the support column assembly.

[0057] Working principle: When the plug body 3 is inserted, the operator can pull the support column 204 to the right. Under the action of the connecting rods 205 and 306, the support column 207 will move to the right, which will eventually extend the waterproof cloth 210 to achieve the protective function. When it is necessary to retract the waterproof cloth 210, the operator can press down on the connection between the connecting rods 205 and 306. At this time, the connecting rods 205 and 306 will fold. Then, the support column 204 will be pushed to the left, and the protective structure 2 can be retracted. Through the setting of the protective structure 2, it can effectively prevent water penetration and external impact, and provide good protection for the plug part.

[0058] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A marine diving plug, characterized in that, Includes a pluggable structure (1): A protective structure (2) is fixedly provided on the upper side of the plug-in structure (1), and a plug body (3) is fixedly provided on one side of the plug-in structure (1); The plug-in structure (1) includes a second main post (110), a ball groove (111), a snap-fit ​​ball (112), a sliding fixing post (113), a third spring (114), and a limiting ring (115); The spherical groove (111) is opened in the inner cavity of the second main column (110), the snap-fit ​​sphere (112) is movably disposed in the inner cavity of the spherical groove (111), the sliding fixed column (113) is movably disposed on the outer side of the second main column (110), the third spring (114) is fixedly connected to one side of the sliding fixed column (113), and the limiting ring (115) is fixedly connected to the outer side of the second main column (110).

2. The marine diving plug according to claim 1, characterized in that: Multiple spherical grooves (111) are provided in the inner cavity of the second main column (110), multiple snap-fit ​​spheres (112) are movably provided in the spherical grooves (111), the second main column (110) is provided with protruding columns, and the sliding fixed column (113) is connected to the protruding columns through the third spring (114).

3. A marine diving plug according to claim 1, characterized in that: The plug-in structure (1) also includes a main post (101), a bottom post (102), a spring (103), a fixing post (104), and a connector (105); The bottom post (102) is fixedly connected to the inner cavity of the main post (101), the spring (103) is fixedly connected to one side of the bottom post (102), the fixing post (104) is movably disposed in the inner cavity of the bottom post (102), and the connector (105) is fixedly connected to one side of the fixing post.

4. A marine diving plug according to claim 3, characterized in that: The outer wall of the main column (101) is provided with a groove, and the snap-fit ​​ball (112) is movably disposed on one side of the groove. The main column (101) is connected to the bottom column (102) and the spring (103). The spring (103) is disposed on the outside of the bottom column (102). The bottom column (102) is connected to the connector (105) through the spring (103).

5. A marine diving plug according to claim 4, characterized in that: The plug-in structure (1) also includes a second connector (106), a second fixing post (107), a second bottom post (108), and a second spring (109); The second connector (106) is movably disposed on one side of the first connector (105), the second fixing post (107) is fixedly connected to one side of the second connector (106), the second bottom post (108) is movably disposed on the outside of the second fixing post (107), the second spring (109) is fixedly connected to one side of the second bottom post (108), and the second bottom post (108) is connected to the second connector (106) through the second spring (109).

6. A marine diving plug according to claim 1, characterized in that: The protective structure (2) includes a fixed base plate (201), a fixed column three (202), a connecting rod one (203), a support column one (204), a connecting rod two (205), a connecting rod three (206), a support column two (207), and a fixed column four (208); The fixed base plate (201) is fixedly connected to one side of the sliding fixed column (113), the fixed column three (202) is fixedly connected to one side of the fixed base plate (201), the connecting rod one (203) is movably disposed on one side of the fixed column three (202), the support column one (204) is movably connected to one side of the connecting rod one (203), the connecting rod two (205) is movably disposed on one side of the support column one (204), the connecting rod three (206) is movably disposed on one side of the connecting rod two (205), the support column two (207) is movably disposed on one side of the connecting rod three (206), and the fixed column four (208) is movably disposed on one side of the support column two (207).

7. A marine diving plug according to claim 6, characterized in that: The fixed column three (202) is connected to the support column one (204) via the connecting rod one (203), the support column one (204) is connected to the connecting rod three (206) via the connecting rod two (205), the connecting rod three (206) is connected to the fixed column four (208) via the support column two (207), and the fixed column four (208) is fixedly installed on one side of the fixed base plate (201).

8. A marine diving plug according to claim 7, characterized in that: The protective structure (2) also includes a support column (209) and a waterproof cloth (210); The third support column (209) is fixedly installed on one side of the fourth support column (208), and the waterproof cloth (210) is fixedly connected to the upper side of the third support column (209). The third support column (209), the first support column (204) and the second support column (207) are all installed on the lower side of the waterproof cloth (210).