A sealed galvanic water tight plug-in device

Abstract

The utility model discloses a kind of sealing electric current water sealing plug-in device, including plug assembly, socket assembly and sealing assembly, the plug assembly includes conducting terminal and the insulating shell of cladding its outer periphery, the injection molding integrated forming process of conducting terminal and insulating shell, eliminate the gap defect of traditional press-fitting process, overall waterproof grade is promoted to IP68;The material combination of silica gel and fluorine rubber can be kept elastic in the range of-40 ℃ to 150 ℃, the oil resistance of fluorine rubber seal ring is obviously improved compared with traditional butyronitrile rubber, suitable for engine compartment and other harsh environments, modular design allows to replace sealing assembly or conducting terminal alone, maintenance cost is reduced, magnetic adsorption structure can provide auxiliary guiding force when disassembling, single-handed operation can complete separation, compared with traditional threaded connection dismounting efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of plug-in device technology, and in particular to a sealed electric water-sealed plug-in device. Background Technology

[0002] Existing plug-in devices generally suffer from the following technical bottlenecks when used in humid, underwater, or high-pressure environments:

[0003] 1. Traditional sealing structures often rely on a single rubber ring or threaded connection, which is prone to leakage due to aging and corrosion after long-term use. For example, conventional water-sealed connectors use metal threads in conjunction with rubber rings, which are susceptible to corrosion and jamming in humid environments. Furthermore, the linear seal provided by the sealing ring alone is insufficient to cope with pressure fluctuations under dynamic operating conditions. In addition, in high-pressure scenarios such as engine blocks, the sealing rings of traditional terminals are easily corroded by engine oil and affected by mechanical vibration, leading to seal failure.

[0004] 2. Existing anti-misinsertion structures mostly use mechanical keyways or protrusions, which are prone to wear after frequent insertion and removal, and cannot achieve automatic alignment during the insertion process. For example, although some smart sockets improve the anti-misinsertion capability through electromagnetic adsorption, they do not integrate a guiding structure, resulting in insufficient insertion accuracy.

[0005] 3. The contact interface between conductive terminals and slots is susceptible to oxidation and wear, leading to increased contact resistance. For example, after frequent insertion and removal, the gold plating on PCB gold fingers can wear down, causing the contact resistance to rise rapidly from below 10mΩ to above 50mΩ, severely affecting signal transmission quality.

[0006] 4. Traditional threaded connections or snap-fit ​​fasteners are prone to loosening in vibrating environments, requiring additional auxiliary fixing devices. For example, although pre-applied adhesive sealing bolts combine thread-locking adhesive and metal washers, the unoptimized washer angle design limits the sealing reliability. Utility Model Content

[0007] In order to overcome the shortcomings of the prior art, one of the objectives of this utility model is to provide a sealed current water-sealed plug-in device.

[0008] One of the objectives of this utility model is achieved through the following technical solution:

[0009] A water-sealed plug-in device includes a plug assembly, a socket assembly, and a sealing assembly. The plug assembly includes conductive terminals and an insulating shell covering its outer periphery. The socket assembly includes a conductive slot that mates with the conductive terminals and a fixed shell. The sealing assembly is disposed at the plug-in interface of the plug assembly and the socket assembly to form a double-sealed structure.

[0010] Furthermore, the sealing assembly includes a first sealing ring and a second sealing ring. The first sealing ring is embedded in the annular groove of the insulating housing, and the second sealing ring is disposed on the sealing protrusion of the fixed housing. When the plug assembly is inserted into the socket assembly, the first sealing ring and the second sealing ring form a stepped sealing fit.

[0011] Furthermore, the first sealing ring is made of silicone material with a wavy cross-section, and the second sealing ring is an O-ring made of fluororubber. The combination of the two achieves an IP68 protection rating.

[0012] Furthermore, the conductive terminal includes a contact section, a multi-stage hoist sealing section, and a riveting section. The multi-stage hoist sealing section is composed of continuous peaks and troughs. The peaks are interference-fitted with the inner wall of the insulating shell, and the troughs form a liquid storage cavity.

[0013] Furthermore, the insertion end of the insulating shell is provided with a guide key, and the corresponding position of the fixed shell is provided with a guide groove. The guide key and the guide groove form an anti-misinsertion structure, and a magnetic post is embedded inside the guide key. A magnetic block that attracts and cooperates with the magnetic post is provided at the bottom of the guide groove.

[0014] Furthermore, the inner wall of the conductive slot is provided with an elastic contact piece, which forms a surface contact with the contact segment of the conductive terminal, and the surface of the elastic contact piece is plated with a gold layer, with a contact resistance of less than 5mΩ.

[0015] Furthermore, the outer periphery of the fixed housing is provided with a threaded connection part, and the corresponding position of the insulating housing is provided with an external thread. The two are axially pre-tightened through threaded engagement, and the threaded connection is filled with waterproof sealant.

[0016] Furthermore, the thread pitch between the threaded connection and the external thread is 1.5 mm, and the mating length is not less than 10 mm, forming a composite sealing structure of mechanical locking and adhesive sealing.

[0017] Furthermore, the conductive terminal and the insulating shell are integrated using injection molding, and the conductive slot is connected to the fixed shell through insert injection molding, achieving an overall waterproof rating of IP68.

[0018] Furthermore, the plug assembly also includes a wire harness fixing member disposed at the tail of the insulating housing. The wire harness fixing member has an elastic clip inside, and the elastic clip is interference-fitted with the outer sheath of the wire harness to form a stress relief structure.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. The stepped combination of silicone corrugated first sealing ring and fluororubber O-ring second sealing ring forms a double physical barrier. Combined with the composite structure of thread pre-tightening and waterproof sealant, the overall protection level reaches IP68, which can be used in deep water for a long time. The multi-stage hoist sealing section of the conductive terminal is interference-fitted with the insulating shell through the crest and the trough to form a liquid storage cavity, which effectively blocks the liquid from penetrating along the terminal axis.

[0021] 2. The mechanical guidance of the guide key and guide groove, combined with the adsorption positioning of the magnetic pillar and magnetic block, ensures that the insertion accuracy error is less than 0.1mm, while providing an axial adsorption force of more than 5N to prevent accidental loosening; the surface contact design of the elastic contact piece and the contact section, combined with the surface gold plating layer (thickness ≥1μm), ensures that the contact resistance is stable below 5mΩ, and maintains excellent conductivity even after multiple insertions and removals.

[0022] 3. The elastic clips of the wire harness fastener release the stress of the wire harness through an interference fit, and can withstand axial tensile force without damaging the sealing structure.

[0023] 4. The injection molding process that integrates conductive terminals and insulating housing eliminates gap defects in traditional press-fitting processes, improving the overall waterproof rating to IP68. The combination of silicone and fluororubber materials can maintain elasticity within a temperature range of -40℃ to 150℃. The oil resistance of the fluororubber sealing ring is significantly improved compared to traditional nitrile rubber, making it suitable for harsh environments such as engine compartments.

[0024] 5. The modular design allows for the individual replacement of sealing components or conductive terminals, reducing maintenance costs. The magnetic adsorption structure provides auxiliary guiding force during disassembly, allowing for separation with one hand, thus improving disassembly and assembly efficiency compared to traditional threaded connections.

[0025] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0027] Figure 2 This is a schematic diagram of the structure of the insulating shell of the component in this embodiment;

[0028] Figure 3 This is a schematic diagram of the structure of the conductive terminals of the component in this embodiment;

[0029] Figure 4 This is a schematic diagram of the external thread structure of the component in this embodiment;

[0030] Figure 5 This is a schematic diagram of the component socket assembly in this embodiment;

[0031] Figure 6 This is a schematic diagram of the component wiring harness in this embodiment.

[0032] In the diagram: 1. Plug assembly; 11. Conductive terminal; 12. Insulating conductor; 13. Insulating housing; 131. Elastic clip; 122. Guide key; 123. Magnetic post; 124. External thread; 2. Socket assembly; 21. Conductive slot; 22. Fixed housing; 221. Sealing boss; 222. Guide groove; 221. Elastic contact; 211. Elastic contact; 224. Threaded connection; 3. Sealing assembly; 31. First sealing ring; 32. Second sealing ring; 4. Waterproof sealant; 5. Wiring harness. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0034] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] Please see Figures 1 to 6The sealing current-water sealing plug-in device of this embodiment includes a plug assembly 1, a socket assembly 2, and a sealing assembly 3. The plug assembly 1 includes a conductive terminal 11 and an insulating shell 12 covering its outer periphery. The socket assembly 2 includes a conductive slot 21 that mates with the conductive terminal 11 and a fixed shell 22. The sealing assembly 3 is disposed at the plug-in interface between the plug assembly 1 and the socket assembly 2, forming a double sealing structure. The sealing assembly 3 includes a first sealing ring 31 and a second sealing ring 32. The first sealing ring 31 is embedded in the annular groove 121 of the insulating shell 12, and the second sealing ring 32 is disposed on the sealing boss 221 of the fixed shell 22. When When the plug assembly 1 is inserted into the socket assembly 2, the first sealing ring 31 and the second sealing ring 32 form a stepped sealing fit. The first sealing ring 31 is made of silicone material and has a wavy cross-section. The second sealing ring 32 is an O-ring made of fluororubber. The combination of the two achieves an IP68 protection level. The conductive terminal 11 includes a contact section, a multi-stage hoist sealing section, and a riveting section. The multi-stage hoist sealing section consists of continuous crests and troughs. The crests are interference-fitted with the inner wall of the insulating housing 12, and the troughs form a liquid storage cavity. The insertion end of the insulating housing 12 is provided with a guide key 122, and the corresponding position of the fixed housing 22 is provided with a guide groove 222. The guide key 122 and the guide groove 222 form an anti-misinsertion structure, and a magnetic post 123 is embedded inside the guide key 122. A magnetic block 223 that attracts and cooperates with the magnetic post 123 is provided at the bottom of the guide groove 222. An elastic contact piece 211 is provided on the inner wall of the conductive slot 21. The elastic contact piece 211 forms surface contact with the contact section 111 of the conductive terminal 11. The surface of the elastic contact piece 211 is plated with a gold layer, and the contact resistance is less than 5mΩ. A threaded connection part 224 is provided on the outer periphery of the fixed housing 22. An external thread 124 is provided at the corresponding position of the insulating housing 12. The two achieve axial pre-tightening through threaded engagement, and the threaded connection is filled with... The waterproof sealant 4, the threaded connection 224 and the external thread 124 have a pitch of 1.5mm and a mating length of not less than 10mm, forming a composite sealing structure of mechanical locking and adhesive sealing. The conductive terminal 11 and the insulating shell 12 are integrated by injection molding. The conductive slot 21 and the fixed shell 22 are connected by insert injection molding. The overall waterproof rating reaches IP68. The plug assembly 1 also includes a wire harness fixing member 13 set at the tail of the insulating shell 12. The wire harness fixing member 13 is provided with an elastic clip 131 inside. The elastic clip 131 and the outer sheath of the wire harness 5 are interference fit to form a stress relief structure.

[0037] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A sealing current-water sealing plug-in device, characterized in that, The device includes a plug assembly (1), a socket assembly (2), and a sealing assembly (3). The plug assembly (1) includes a conductive terminal (11) and an insulating shell (12) covering its outer periphery. The socket assembly (2) includes a conductive slot (21) that mates with the conductive terminal (11) and a fixed shell (22). The sealing assembly (3) is disposed at the insertion interface of the plug assembly (1) and the socket assembly (2) to form a double sealing structure.

2. The sealing current-water sealing plug-in device according to claim 1, characterized in that, The sealing assembly (3) includes a first sealing ring (31) and a second sealing ring (32). The first sealing ring (31) is embedded in the annular groove (121) of the insulating housing (12), and the second sealing ring (32) is disposed on the sealing boss (221) of the fixed housing (22). When the plug assembly (1) is inserted into the socket assembly (2), the first sealing ring (31) and the second sealing ring (32) form a stepped sealing fit.

3. The sealing current-water sealing plug-in device according to claim 2, characterized in that, The first sealing ring (31) is made of silicone material and has a wavy cross-section. The second sealing ring (32) is an O-ring made of fluororubber. The combination of the two achieves an IP68 protection level.

4. The sealing current-water sealing plug-in device according to claim 1, characterized in that, The conductive terminal (11) includes a contact section, a multi-stage hoist sealing section and a riveting section. The multi-stage hoist sealing section is composed of continuous peaks and troughs. The peaks are interference-fitted with the inner wall of the insulating shell (12), and the troughs form a liquid storage cavity.

5. The sealing current-water sealing plug-in device according to claim 1, characterized in that, The insertion end of the insulating shell (12) is provided with a guide key (122), and the fixed shell (22) is provided with a guide groove (222) at the corresponding position. The guide key (122) and the guide groove (222) form an anti-misinsertion structure, and a magnetic post (123) is embedded inside the guide key (122). A magnetic block (223) is provided at the bottom of the guide groove (222) to attract and cooperate with the magnetic post (123).

6. The sealing current-water sealing plug-in device according to claim 1, characterized in that, The inner wall of the conductive slot (21) is provided with an elastic contact piece (211), which forms a surface contact with the contact segment (111) of the conductive terminal (11), and the surface of the elastic contact piece (211) is plated with a gold layer, with a contact resistance of less than 5mΩ.

7. The sealing current-water sealing plug-in device according to claim 1, characterized in that, The outer periphery of the fixed housing (22) is provided with a threaded connection part (224), and the corresponding position of the insulating housing (12) is provided with an external thread (124). The two are axially pre-tightened through threaded engagement, and the threaded connection is filled with waterproof sealant (4).

8. The sealing current-water sealing plug-in device according to claim 7, characterized in that, The threaded connection (224) and the external thread (124) have a pitch of 1.5 mm and a mating length of not less than 10 mm, forming a composite sealing structure of mechanical locking and adhesive sealing.

9. The sealing current-water sealing plug-in device according to claim 1, characterized in that, The conductive terminal (11) and the insulating shell (12) are integrated by injection molding process, and the conductive slot (21) and the fixed shell (22) are connected by insert injection molding process, and the overall waterproof level reaches IP68.

10. The sealing current-water sealing plug-in device according to claim 1, characterized in that, The plug assembly (1) further includes a wire harness fixing member (13) disposed at the tail of the insulating housing (12). The wire harness fixing member (13) is provided with an elastic clip (131) inside. The elastic clip (131) is interference-fitted with the outer sheath of the wire harness (5) to form a stress relief structure.

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