A waterproof plug

Abstract

This utility model discloses a waterproof plug, including a plug body and a socket for inserting the plug body. The plug body is fitted with a connector, and the socket has an isolation portion that isolates the socket. An elastic sealing layer is provided on the outer side of the isolation portion. The isolation portion is fitted into the connector, and the elastic sealing layer abuts against the isolation portion and the connector. A plurality of elastic elements are evenly distributed on the inner side of the isolation portion, and an elastic airbag is also provided on the inner side of the isolation portion. The two sides of the elastic airbag abut against the elastic elements and the inner wall of the isolation portion, respectively. When the plug body is inserted into the socket, the elastic elements compress the first elastic airbag, causing the first elastic airbag to fill the gap between the socket and the plug body. This utility model's technical solution, through a double-layer protective design, eliminates the need for traditional interference fits, resulting in superior long-term sealing performance. It is particularly suitable for scenarios involving frequent plugging and unplugging, significantly improving the plug's waterproof performance.

Description

Technical Field

[0001] This utility model relates to the field of plugs, and in particular to a waterproof plug. Background Technology

[0002] Waterproof plugs, as key interface components for power transmission, are widely used in humid or dusty environments such as outdoor lighting, underwater equipment, and industrial robots. Traditional waterproof plugs typically achieve waterproofing by combining a sealing ring on the plug face with a glue-filled seal at the tail, generally achieving an IP67 protection rating.

[0003] In existing technologies, the plug body is mostly made of thermoplastic elastomer, and the plug end face is equipped with a single-layer O-ring rubber seal. The tail cable is waterproofed by threaded compression structure or epoxy resin potting. This type of structure performs well in short-term sealing tests, but under long-term dynamic use environment, the plug sealing stability is insufficient. After the single-layer O-ring seal is plugged and unplugged many times, it will undergo permanent compression deformation, resulting in a decrease in the sealing pressure of the contact surface, which is prone to micro-leakage under temperature alternating conditions. Utility Model Content

[0004] The main objective of this invention is to provide a waterproof plug, which aims to solve existing technical problems.

[0005] To achieve the above objectives, this utility model proposes a waterproof plug, comprising a plug body and a socket for inserting the plug body. The plug body is fitted with a connector, and the socket is provided with an isolation portion that isolates the socket. An elastic sealing layer is provided on the outer side of the isolation portion. The isolation portion is fitted into the connector, and the elastic sealing layer abuts against the isolation portion and the connector. A plurality of elastic elements are evenly provided on the inner side of the isolation portion, and an elastic airbag is also provided on the inner side of the isolation portion. The two sides of the elastic airbag abut against the elastic elements and the inner wall of the isolation portion, respectively. When the plug body is inserted into the socket, the elastic elements compress the first elastic airbag, causing the elastic airbag to fill the gap between the socket and the plug body.

[0006] Preferably, the plug body is provided with multiple connectors, each connector is fitted with a sealing element, the plug body is provided with a plug groove corresponding to the connector, each plug groove is fitted with a sealing groove, and when the connector is inserted into the plug groove, the sealing element and the sealing groove are engaged with each other.

[0007] Preferably, the sealing element is an elastic sealing ring, and when the connector is inserted into the connector groove, the elastic sealing ring and the sealing groove are fitted together.

[0008] Optionally, the isolation portion includes a tubular cylinder sleeved on the socket, and the elastic sealing layer is sleeved on the tubular cylinder.

[0009] Preferably, the elastic sealing layer is an annular airbag, and the tubular cylinder is inserted into the annular airbag.

[0010] Optionally, the outer side of the isolation part is provided with threads, and the connector is threadedly connected to the isolation part.

[0011] Optionally, the connector is provided with an anti-slip strip on its outer side.

[0012] The technical solution of this utility model has the following beneficial effects: The technical solution of this utility model achieves the first layer of waterproof protection by setting an elastic sealing layer between the connector and the isolation part. At the same time, an elastic element and an elastic airbag are set between the isolation part and the plug body. When the plug body is inserted into the socket, the elastic element squeezes the elastic airbag to fill the gap between the socket and the plug body, thereby achieving further waterproof protection. The double-layer protection design improves the stability of the plug seal and enhances the waterproof performance of the plug. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of a waterproof plug according to an embodiment of the present invention;

[0015] Figure 2 This is a top view of a waterproof plug according to an embodiment of the present invention.

[0016] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0017] Reference numerals: 1. Plug body; 2. Socket; 11. Connector; 12. Plug connector; 121. Seal; 21. Isolation part; 22. Elastic sealing layer; 23. Elastic element; 24. Elastic airbag; 25. Plug groove; 251. Sealing groove. Detailed Implementation

[0018] 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.

[0019] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0020] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0021] This utility model proposes a waterproof plug.

[0022] like Figures 1 to 2 As shown, in one embodiment of this utility model, a waterproof plug includes a plug body 1 and a socket 2 for inserting the plug body 1. The plug body 1 is fitted with a connector 11, which is used to fix the socket 2. The connector 11 can be a cylindrical plastic product or a metal product, and its shape can be square, without limitation. The socket 2 is provided with an isolation part 21 that isolates the socket 2. The isolation part 21 can be a tubular cylinder or a cube. The isolation part 21 is fitted around the periphery of the socket 2 and is spaced apart from the connection end of the socket 2. An elastic sealing layer 22 is provided on the outside of the isolation part 21. The elastic sealing layer 22 can be a rubber product or an elastic airbag 24, and is laid on the outer periphery of the isolation part 21. The isolation part 21 is fitted into the connector. 11. The elastic sealing layer 22 abuts against the isolation part 21 and the connector 11, and the elastic sealing layer 22 is used to achieve the first layer of protection, separating and sealing the connector 11 and the socket 2. In addition, a number of elastic elements 23 are evenly provided on the inner side of the isolation part 21. The elastic elements 23 can be rubber products or elastic plastic products, which will not be described in detail here. An elastic airbag 24 is also provided on the inner side of the isolation part 21. The elastic airbag 24 is embedded in the inner side of the isolation part 21, so that the two sides of the elastic airbag 24 abut against the elastic elements 23 and the inner wall of the isolation part 21 respectively. When the plug body 1 is inserted into the socket 2, the elastic elements 23 squeeze the first elastic airbag 24 to fill the gap between the socket 2 and the plug body 1, forming a second layer of waterproof protection and achieving self-adaptive sealing.

[0023] This embodiment achieves a first layer of waterproof protection by setting an elastic sealing layer 22 between the connector 11 and the isolation part 21. At the same time, an elastic element 23 and a first elastic airbag 24 are set between the isolation part 21 and the plug body 1. When the plug body 1 is inserted into the socket 2, the elastic element 23 squeezes the first elastic airbag 24 to fill the gap between the socket 2 and the plug body 1, thereby achieving further waterproof protection. The double-layer protection design does not rely on traditional interference fits, and has better long-term sealing performance. It is especially suitable for frequent plugging and unplugging scenarios, which greatly improves the waterproof performance of the plug.

[0024] Furthermore, a waterproof plug includes a plug body 1 and a socket 2. The plug body 1 is fitted with a connector 11 on its outer periphery. The connector 11 is made of corrosion-resistant aluminum alloy and has threads on its inner wall. The socket 2 has a tubular isolation part 21. The isolation part 21 is integrally molded from insulating plastic and its outer periphery is covered with an elastic sealing layer 22. The elastic sealing layer 22 is made of silicone and is 2mm thick. When the plug body 1 is inserted into the socket 2, the connector 11 is fixed to the isolation part 21 by screwing it in. The elastic sealing layer 22 is compressed between the connector 11 and the isolation part 21, forming the first waterproof barrier. Six compression springs are evenly arranged circumferentially on the inner side of the isolation part 21. One end of the compression spring abuts against the inner wall of the isolation part 21, and the other end abuts against the elastic airbag 24. The elastic airbag 24 is made of rubber and is initially half-inflated. When the plug body 1 is inserted, the compression spring is compressed and pushes the airbag to expand, filling the gap between the plug body 1 and the socket 2.

[0025] Preferably, the plug body 1 is provided with multiple plugs 12, and each plug 12 is fitted with a sealing element 121. The sealing element 121 can be a protrusion that is fixedly connected to the socket 2, and its shape is not limited. The plug body 1 is provided with a plug groove 25 corresponding to the plug 12, and each plug groove 25 is fitted with a sealing groove 251. When the plug 12 is inserted into the plug groove 25, the sealing element 121 and the sealing groove 251 fit together. The cooperation of the sealing element 121 and the sealing groove 251 isolates each plug 12, preventing the plug 12 from short-circuiting when water accumulates at the bottom.

[0026] Preferably, the sealing element 121 is an elastic sealing ring, and when the plug 12 is inserted into the plug groove 25, the elastic sealing ring and the sealing groove 251 are fitted together.

[0027] Furthermore, the plug body 1 is provided with multiple connectors 12, and each connector 12 is circumferentially fitted with a sealing element 121; the socket 2 is provided with a corresponding insertion groove 25, and the inner wall of the insertion groove 25 is provided with an annular sealing groove 251. Among them, the sealing element 121 is an O-ring silicone ring, the outer diameter of which is slightly larger than the inner diameter of the insertion groove 25, forming an interference fit. When the connector 12 is inserted into the insertion groove 25, the O-ring is compressed and tightly adheres to the inner wall of the sealing groove 251, forming a third waterproof barrier.

[0028] Furthermore, the seal 121 is preferably made of fluororubber, which is heat-resistant and has lasting elasticity. The root of the connector 12 is provided with an annular groove, and the O-ring is embedded in the groove to prevent it from falling out during insertion and removal. The sealing groove 251 of the connector groove 25 has a depth of 2mm, which matches the compression of the O-ring to ensure sealing.

[0029] Optionally, the isolation part 21 includes a tubular cylinder sleeved on the socket 2, and an elastic sealing layer 22 is sleeved on the tubular cylinder, which facilitates insertion and removal.

[0030] Furthermore, the tubular cylinder and the socket 2 are integrally injection molded, and the elastic sealing layer 22 covers the outer periphery of the tubular cylinder. The outer diameter of the tubular cylinder is 15mm, and the elastic sealing layer 22 is fixed to the surface of the cylinder by a hot pressing process. The thickness of the elastic sealing layer 22 is 1.5mm, and the material is EPDM rubber, which has excellent aging resistance.

[0031] Preferably, the elastic sealing layer 22 is an annular air bladder, with a tubular cylinder inserted inside the annular air bladder, which can tightly fill various parts when squeezed.

[0032] Furthermore, the annular airbag is inflated at a pressure of 0.1 MPa, and its inner wall fits tightly against the isolation part 21. The annular airbag is equipped with a one-way valve. Before inserting the plug, it is inflated to the rated pressure through the valve. When the connector 11 is screwed on, the airbag is deformed under pressure, further fitting the thread gap and improving the sealing effect.

[0033] Optionally, the outer side of the isolation part 21 is provided with threads, and the connector 11 is threadedly connected to the isolation part 21.

[0034] Optionally, the thread of the isolation part 21 can be replaced with a quick-release snap-fit ​​structure, and the inner wall of the connector 11 is provided with elastic claws that engage with the annular groove of the isolation part 21.

[0035] Optionally, the connector 11 has an anti-slip strip on the outside for easy tightening.

[0036] Optionally, the gas in the elastic airbag 24 and the annular airbag is an inert gas (such as nitrogen) to avoid aging-induced elastic failure and extend the lifespan compared to traditional rubber seals.

[0037] Specifically, the working principle and usage process of this utility model are as follows: A first layer of waterproof protection is achieved by setting an elastic sealing layer 22 between the connector 11 and the isolation part 21. At the same time, an elastic element 23 and a first elastic airbag 24 are set between the isolation part 21 and the plug body 1. When the plug body 1 is inserted into the socket 2, the elastic element 23 squeezes the first elastic airbag 24 to fill the gap between the socket 2 and the plug body 1, thereby achieving further waterproof protection. The isolation part 21 can separate the plug body 1 and the socket 2 to form a sealed chamber. The multi-layer protection design improves the stability of the plug seal and enhances the waterproof performance of the plug.

[0038] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A waterproof plug comprising a plug body (1) and a socket (2) into which the plug body (1) is inserted, characterized in that, The plug body (1) is fitted with a connector (11), and the socket (2) is provided with an isolation part (21) that isolates the socket (2). An elastic sealing layer (22) is provided on the outside of the isolation part (21). The isolation part (21) is fitted into the connector (11) and the elastic sealing layer (22) abuts against the isolation part (21) and the connector (11). A plurality of elastic elements (23) are evenly provided on the inside of the isolation part (21). An elastic airbag (24) is also provided on the inside of the isolation part (21). The two sides of the elastic airbag (24) abut against the elastic elements (23) and the inner wall of the isolation part (21) respectively. When the plug body (1) is inserted into the socket (2), the elastic elements (23) squeeze the elastic airbag (24) so ​​that the elastic airbag (24) fills the gap between the socket (2) and the plug body (1).

2. A waterproof plug according to claim 1, characterized in that, The plug body (1) is provided with multiple plugs (12), and each plug (12) is fitted with a sealing element (121). The plug body (1) is provided with a plug groove (25) corresponding to the plug (12), and each plug groove (25) is fitted with a sealing groove (251). When the plug (12) is inserted into the plug groove (25), the sealing element (121) and the sealing groove (251) are fitted together.

3. A waterproof plug according to claim 2, characterized in that, The sealing element (121) is an elastic sealing ring. When the plug (12) is inserted into the plug groove (25), the elastic sealing ring and the sealing groove (251) fit together.

4. A waterproof plug according to claim 1, characterized in that, The isolation part (21) includes a tubular cylinder sleeved on the socket (2), and the elastic sealing layer (22) is sleeved on the tubular cylinder.

5. A waterproof plug according to claim 4, characterized in that, The elastic sealing layer (22) is an annular airbag, and the tubular cylinder is inserted into the annular airbag.

6. A waterproof plug according to claim 1, characterized in that, The isolation part (21) is provided with threads on the outside, and the connector (11) is threadedly connected to the isolation part (21).

7. A waterproof plug according to any one of claims 1 to 6, characterized in that, The connector (11) has an anti-slip strip on its outer side.

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