Waterproof plug structure and electrical connector

Abstract

This application relates to a waterproof plug structure and an electrical connector. The waterproof plug structure includes a housing, terminals, and a sealant. One end of the housing is a plug-in end for insertion into a plug structure. The other end of the housing has a receiving groove, which includes a main groove and a receiving groove, with the receiving groove located on at least one side wall of the main groove. The terminal passes through the housing, with one end passing through the plug-in end and the other end extending outward relative to the housing via the receiving groove. The sealant fills the receiving groove and covers the outside of the terminal. The plug-in end of the housing is used for insertion into the plug structure, i.e., this plug-in end is the free end of the waterproof plug structure, and the end containing the receiving groove is the fixed end of the waterproof plug structure. Because the terminal extends outward relative to the housing via the receiving groove, filling the receiving groove with the sealant improves the waterproofness of the mating area between the terminal and the housing, reducing the risk of liquid seeping into the plug-in end along the gap between the terminal and the housing.

Description

Technical Field

[0001] This application relates to the field of electrical connector technology, and in particular to a waterproof plug structure and an electrical connector. Background Technology

[0002] Electrical connectors are electromechanical components used for circuit connection and signal transmission. They typically consist of a plug and a socket, which are inserted to achieve electrical conductivity. Currently, electrical connectors are widely used in aerospace, electronic equipment, and other fields.

[0003] In traditional electrical connectors, the free ends of the plug and socket are inserted together, and sealing rings or other structures are usually provided at both free ends to ensure a tight seal. However, the fixed end of the plug and socket (i.e., the end away from the free end) lacks effective sealing and waterproofing measures, making it easy for liquid to seep into the free end from the fixed end, leading to conductive connection failure. Utility Model Content

[0004] Therefore, it is necessary to provide a waterproof plug structure and electrical connector to address the problem of insufficient sealing at the fixed end of the electrical connector.

[0005] This application provides a waterproof plug structure, which includes a housing, a terminal, and a sealant. One end of the housing is a plug-in end for plugging into a plug-in structure. The other end of the housing has a receiving groove, which includes a main groove and a receiving groove. The receiving groove is located on at least one side wall of the main groove. The terminal passes through the housing, with one end passing through the plug-in end and the other end extending outward from the housing via the receiving groove. The sealant fills the receiving groove and covers the outside of the terminal.

[0006] In one embodiment, the housing includes a ring portion and a partition portion, the partition portion being disposed within the ring portion, the partition portion and a portion of the inner peripheral wall of the ring portion forming the adhesive receiving groove, and the receiving groove being recessed in the partition portion.

[0007] In one embodiment, the partition portion has a connection hole, and the terminal includes a body and a limiting component. The limiting component is disposed on the outer periphery of the body, and the body passes through the connection hole. Part of the limiting component is located inside the connection hole and is limited and engaged with the hole wall of the connection hole. Another part of the limiting component is located inside the adhesive groove and is limited and engaged with the sealing adhesive.

[0008] In one embodiment, the limiting component includes a first limiting ring and a second limiting ring, which are spaced apart along the axis of the body on the outer periphery of the body. The first limiting ring is located in the connecting hole to limit and cooperate with the hole wall of the connecting hole, and the second limiting ring is located in the adhesive groove to limit and cooperate with the sealing adhesive.

[0009] In one embodiment, the shape of the second limiting ring is configured as any one of a triangle, a semicircle, an ellipse, or a rectangle in a longitudinal section passing through the axis of the body.

[0010] In one embodiment, the partition portion further includes a positioning platform that protrudes from the wall of the connecting hole, and the terminal further includes a positioning part that is disposed on the outer periphery of the body and abuts against the positioning platform.

[0011] In one embodiment, a portion of the terminals passes through the receiving groove, and a portion of the limiting portion of the terminals is located within the receiving groove; a portion of the terminals passes through the main groove, and a portion of the limiting portion of the terminals is located within the main groove.

[0012] In one embodiment, the waterproof plug structure further includes a sealing gasket, the ring sleeve includes a sleeve body and a disc body, the sleeve body is hollow, the disc body is connected to the outer periphery of the sleeve body, the disc body is used to connect with an external mounting structure, and the sealing gasket is disposed on the side of the disc body facing the mounting structure and is sleeved on the sleeve body.

[0013] In one embodiment, the sealing gasket includes a gasket body and a protruding ring, the protruding ring being disposed on the side of the gasket body opposite to the disc body, the protruding ring being used to abut against the mounting structure, and the protruding ring being configured as a deformable body.

[0014] This application also provides an electrical connector, which includes the waterproof plug structure described above.

[0015] In the aforementioned waterproof connector structure, the plug-in end of the housing is used to connect with the connector structure; that is, this plug-in end is the free end of the waterproof connector structure, while the end containing the adhesive groove is the fixed end of the waterproof connector structure. Since the terminal extends outward from the housing through the adhesive groove, filling the adhesive groove with sealant improves the waterproofness at the junction of the terminal and housing, reducing the risk of liquid seeping into the connector through the gap between the terminal and housing. Furthermore, the adhesive groove includes a main groove and a receiving groove, with the receiving groove located on one side of the main groove wall, meaning that the main groove is further recessed. This increases the adhesive capacity of the adhesive groove, improving waterproof performance; it also increases the contact area between the sealant and the adhesive groove, reducing the likelihood of gaps appearing due to heat deformation of the sealant and housing in high-temperature environments, leading to loosening and detachment of the sealant. This further improves the waterproofness of the fixed end. Furthermore, the sealant is wrapped around the terminals, so the support of each terminal can reduce the chance of the sealant deforming and loosening in high-temperature environments, thus improving the waterproofness of the fixed end. Attached Figure Description

[0016] Figure 1 This is an isometric schematic diagram of a waterproof plug structure provided in an embodiment of this application.

[0017] Figure 2 for Figure 1 An exploded view of the waterproof plug structure shown.

[0018] Figure 3 for Figure 1 The front view of the waterproof plug structure shown.

[0019] Figure 4 for Figure 3 The waterproof plug structure shown is a cross-sectional view along line AA.

[0020] Figure 5 for Figure 4 A magnified view of part B in the waterproof plug structure shown.

[0021] Figure 6 for Figure 5 The cross-sectional view of the housing in the waterproof plug structure shown.

[0022] Figure 7 for Figure 4 A cross-sectional view of the terminal in the waterproof plug structure shown.

[0023] Figure 8 for Figure 1 An exploded view of the waterproof plug structure shown from another perspective.

[0024] Figure 9 for Figure 8 The front view of the sealing gasket in the waterproof plug structure shown.

[0025] Reference numerals: 10, Waterproof plug structure; 100, Housing; 101, Plug-in end; 102, Fixed end; 103, Adhesive groove; 104, Main groove; 105, Receiving groove; 106, Plug-in groove; 110, Ring part; 111, Sleeve body; 112, Disc body; 113, Threaded hole; 114, Buckle; 115, Positioning block; 120, Partition part; 121, Connecting hole; 122, Positioning platform; 200, Terminal; 210, Body; 220, Limiting component; 221, First limiting ring; 222, Second limiting ring; 230, Positioning part; 300, Sealing adhesive; 400, Sealing gasket; 410, Gasket body; 420, Raised ring; 430, Positioning groove; O, Axis. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0032] One embodiment of this application provides an electrical connector, which includes a waterproof plug structure and a mating structure (not shown in the figures, the same below). The waterproof plug structure and the mating structure are mated together to achieve electrical conductivity. The free end of the waterproof plug structure (i.e., the mating end mentioned below) is used to mate with the mating structure, and the fixed end of the waterproof plug structure is used to connect electronic components. For example, the fixed end of the waterproof plug structure can be directly connected to a circuit board by soldering, or the fixed end of the waterproof plug structure can be connected to a cable for connection to other electronic components.

[0033] See Figures 1 to 4 , Figure 1 This paper shows an isometric schematic diagram of a waterproof plug structure provided in an embodiment of the present application. Figure 2 for Figure 1 The exploded view of the waterproof plug structure shown is as follows. Figure 3 for Figure 1Front view of the waterproof connector structure. Figure 4 for Figure 3 The diagram shows a cross-sectional view of the waterproof plug structure along line AA. An embodiment of this application provides a waterproof plug structure 10 including a housing 100, terminals 200, and a sealant 300, both of which are located within the housing 100. One end of the housing 100 is a plug-in end 101, used for plugging into a plug-in structure; that is, the plug-in end 101 is configured as a free end. The other end of the housing 100 has a sealant groove 103, located at the fixed end 102. For example... Figure 4 The adhesive reservoir 103 includes a main reservoir 104 and a receiving reservoir 105, with the receiving reservoir 105 disposed on at least one side wall of the main reservoir 104. A terminal 200 passes through the housing 100, with one end of the terminal 200 passing through the plug-in terminal 101 and the other end extending outwards from the housing 100 via the adhesive reservoir 103. A sealant 300 fills the adhesive reservoir 103 and covers the outside of the terminal 200.

[0034] In the aforementioned waterproof plug structure 10, the plug-in end 101 of the housing 100 is used for plugging into the plug structure, that is, the plug-in end 101 is the free end of the waterproof plug structure 10, and the end where the adhesive groove 103 is located is the fixed end 102 of the waterproof plug structure 10. Since the terminal 200 extends outward relative to the housing 100 through the adhesive groove 103, filling the adhesive groove 103 with the sealant 300 can improve the waterproofness of the mating area between the terminal 200 and the housing 100 and reduce the risk of liquid seeping into the plug end 101 along the gap between the terminal 200 and the housing 100. Furthermore, the adhesive groove 103 includes a main groove 104 and a receiving groove 105. The receiving groove 105 is provided on one side of the groove wall of the main groove 104, that is, the configuration of the receiving groove 105 can make the main groove 104 further recessed. Therefore, on the one hand, the amount of adhesive that the adhesive reservoir 103 can hold is increased, thus improving waterproof performance; on the other hand, the contact area between the sealant 300 and the adhesive reservoir 103 is also increased, reducing the likelihood of the sealant 300 loosening and falling off due to heat deformation of the sealant 300 and the housing 100 in high-temperature environments. This further improves the waterproof performance of the fixed end 102. Furthermore, since the sealant 300 covers the terminals 200, the support of each terminal 200 also reduces the likelihood of the sealant 300 deforming and loosening in high-temperature environments, further improving the waterproof performance of the fixed end 102.

[0035] Please see Figure 4It should be noted that the embodiments of this application do not limit whether the waterproof plug structure 10 is constructed as a plug or a socket. As one example, when the waterproof plug structure 10 is used as a socket, the terminal 200 is constructed as a socket terminal. In this case, the plug-in end 101 of the waterproof plug structure 10 is constructed as a solid structure to support the socket terminal. As another example, when the waterproof plug structure 10 is used as a plug, the terminal 200 is constructed as a pin terminal. In this case, the plug-in end 101 of the waterproof plug structure 10 has a plug groove 106 for plugging into a plug structure. For ease of explanation, each embodiment will be described using the waterproof plug structure 10 as a plug as an example. The same applies when it is used as a socket, so it will not be described again.

[0036] Please see Figure 4 and Figure 5 In one embodiment, the housing 100 includes a ring portion 110 and a partition portion 120, with the partition portion 120 disposed within the ring portion 110. The partition portion 120 and a portion of the inner peripheral wall of the ring portion 110 together form an adhesive receiving groove 103, and a receiving groove 105 is recessed into the partition portion 120. It is readily understood that, due to the limitations of the overall size of the waterproof plug structure 10, the depth of the adhesive receiving groove 103 cannot typically be configured to be large. Therefore, by distributing the receiving groove 105 at the partition portion 120, the receiving groove 105 can have a relatively larger distribution area, thereby increasing the amount of adhesive, increasing the contact area, and reducing air bubbles that may exist during adhesive filling.

[0037] Of course, in another embodiment, the receiving groove 105 may also be recessed into the inner wall surface of the ring portion 110. Thus, the sealant 300 filled in the adhesive groove 103 can extend and distribute into the receiving groove 105, thereby making it less likely for the sealant 300 to loosen or fall off relative to the housing 100 along the axis O direction of the terminal 200.

[0038] Please see Figure 4 In one embodiment, the ring sleeve portion 110 is hollow, and the partition portion 120 is disposed inside the ring sleeve portion 110. The partition portion 120 divides the internal space of the ring sleeve portion 110 into an adhesive receiving groove 103 and an insertion groove 106.

[0039] Please see Figure 5 and Figure 6 In one embodiment, the terminal 200 can be positioned relative to the housing 100, thus providing a stable position for the terminal 200. Furthermore, the partition portion 120 has a connection hole 121 through which the terminal 200 passes and is positioned relative to the wall of the connection hole 121. The connection hole 121 connects the adhesive reservoir 103 and the insertion slot 106. The placement of the sealant 300 reduces the likelihood of liquid seeping from the adhesive reservoir 103 located at the fixed end 102 into the insertion slot 106 via the connection hole 121, thereby improving water resistance.

[0040] Combination Figure 7 Please refer to the following: Figure 5 Furthermore, the terminal 200 includes a body 210 and a limiting member 220. The limiting member 220 is disposed on the outer periphery of the body 210, which passes through the connecting hole 121. A portion of the limiting member 220 is located within the connecting hole 121, limiting and engaging with the hole wall of the connecting hole 121. Another portion of the limiting member 220 is located within the adhesive reservoir 103, limiting and engaging with the sealant 300. It can be understood that since a portion of the limiting member 220 is located within the adhesive reservoir 103, the sealant 300 can cover the limiting member 220 when filling the adhesive reservoir 103, thus enabling the sealant 300 to limit and engage with the limiting member 220. Therefore, the sealant 300 can not only be fixedly connected to the housing 100 by its own adhesive adhesion, but also fixedly connected to the housing 100 by limiting and engaging with the terminal 200. In other words, in this application, the terminal 200 is positioned in a limiting fit with both the housing 100 and the sealant 300, thus improving the positional stability of the sealant 300 relative to the housing 100. This reduces the likelihood of the sealant 300 loosening and falling off, thereby improving the waterproofing effect.

[0041] Please participate Figure 7 Combined Figure 5 In one embodiment, the limiting component 220 includes a first limiting ring and a second limiting ring 222. The first limiting ring 221 and the second limiting ring 222 are spaced apart along the axis O of the body 210 on the outer periphery of the body 210. The first limiting ring 221 is located inside the connecting hole 121 to limit and cooperate with the hole wall of the connecting hole 121. The second limiting ring 222 is located inside the adhesive groove 103 to limit and cooperate with the sealing adhesive 300. With this configuration, the terminal 200 is connected to the sealing adhesive 300 and the housing 100 respectively by its first limiting ring 221 and the second limiting ring 222, so that the sealing adhesive 300, the terminal 200 and the housing 100 form a stable whole, and the three are not prone to relative displacement, thus improving the waterproof effect of the waterproof plug structure 10.

[0042] Please see Figure 7 In one embodiment, on the longitudinal section passing through the axis O of the body 210, the shape of the first limiting ring 221 is constructed as any one of a triangle, a semicircle, an ellipse, or a rectangle, so as to form a limiting fit with the wall of the connecting hole 121.

[0043] Furthermore, on the longitudinal section passing through the axis O of the body 210, the shape of the second limiting ring 222 can also be constructed as any of the following: triangular, semi-circular, elliptical, or rectangular, so as to form a limiting fit with the sealing component 300. Thus, after the sealing component 300 fills the adhesive groove 103 and covers the second limiting ring 222, it can form a tight limiting fit with the second limiting ring 222, improving the positional stability of the sealing component 300.

[0044] Please see Figure 6 Combined Figure 5 and Figure 7 In one embodiment, the partition portion 120 further includes a positioning platform 122, which protrudes from the wall of the connecting hole 121. The terminal 200 also includes a positioning portion 230, which is disposed on the outer periphery of the body 210 and abuts against the positioning platform 122 to define the axial position of the terminal 200 relative to the housing 100. Thus, by using the abutment between the positioning portion 230 and the positioning platform 122, the axial position of the terminal 200 relative to the housing 100 can be determined, so that the terminal 200 is positioned where the first limiting ring 221 is located within the connecting hole 121 and the second limiting ring 222 is located within the adhesive groove 103.

[0045] Please see Figure 7 Combined Figure 5 In one embodiment, there can be multiple first limiting rings 221, which are spaced apart along the axis O of the terminal 200 to improve the limiting effect. Similarly, there can be multiple second limiting rings 222, also spaced apart along the axis O of the terminal 200 to improve the limiting effect. It is understood that the number of first limiting rings 221, the number of second limiting rings 222, the spacing between adjacent first limiting rings 221, the spacing between adjacent second limiting rings 222, and the spacing between adjacent first limiting rings 221 and second limiting rings 222 can be set according to actual needs. That is, while meeting waterproof and stable requirements, the number of each limiting ring should be minimized, and the spacing between each limiting ring should be maximized to reduce the probability of air bubbles during adhesive filling and to reduce the difficulty of inserting the terminal 200.

[0046] Please see Figure 1 and Figure 2 Combined Figure 4 In one embodiment, there can be multiple terminals 200, and all of the terminals 200 can be used to transmit electrical energy. Alternatively, all of the terminals 200 can be used to transmit electrical signals. Or, some of the terminals 200 can be used to transmit electrical energy, and some can be used to transmit electrical signals, which can be set according to actual needs.

[0047] Please see Figure 5 Combined Figure 2 In one embodiment, some terminals 200 are inserted into the receiving groove 105, and a portion of the limiting part of the terminal 200 is located within the receiving groove 105, that is, the second limiting ring 222 of the terminal 200 inserted into the receiving groove 105 is located within the receiving groove 105. Some terminals 200 are inserted into the main groove 104, and a portion of the limiting part of the terminal 200 is located within the main groove 104, that is, the second limiting ring 222 of the terminal 200 inserted into the main groove 104 is located within the main groove 104. Since both the main groove 104 and the receiving groove 105 are filled with sealant 300, the terminals 200 inserted into the main groove 104 and the sealant groove 103 can both serve to connect the sealant 300 and the housing 100. Therefore, multiple terminals 200 can collectively improve the positional stability of the sealant 300 relative to the housing 100, thereby improving the waterproof effect.

[0048] Please see Figure 1 In one embodiment, a wire can be configured to extend into the adhesive reservoir 103 to connect with the terminal 200, thereby addressing the issue of a portion of the structure at the tail end of the terminal 200 being exposed to the external environment. Alternatively, in another embodiment, the tail end of the terminal 200 can be soldered to a cable or circuit board, in which case the solder can be wrapped around the outside of the terminal 200, thus addressing the issue of a portion of the structure at the tail end of the terminal 200 being exposed to the external environment.

[0049] Please see Figure 8 and Figure 9 In one embodiment, the waterproof plug structure 10 further includes a sealing gasket 400. The annular portion 110 includes a sleeve 111 and a disc 112. The sleeve 111 is hollow, and the disc 112 is connected to the outer periphery of the sleeve 111 and is used for connection to an external mounting structure. The sealing gasket 400 is located on the side of the disc 112 facing the mounting structure and is fitted over the sleeve 111. Because the sealing gasket 400 is located on the side of the disc 112 facing the mounting structure, when the disc 112 is connected to the mounting structure (not shown, the same below), the sealing gasket 400 is clamped between the disc 112 and the mounting structure. This reduces the risk of liquid entering the plug groove 106 along the outer periphery of the disc 112 and the sleeve 111, causing conductive failure. The aforementioned mounting structure can be a wall or the housing of the device on which the waterproof plug structure 10 is installed.

[0050] Furthermore, the side of the disc 112 facing the mounting structure is the side of the disc 112 that is away from the sealing element 300.

[0051] Please see Figure 9In one embodiment, the sealing gasket 400 includes a gasket body 410 and a protruding ring 420, the protruding ring 420 being disposed on the side of the gasket body 410 opposite to the disc body 112. The protruding ring 420 is used to abut against the mounting structure, and the protruding ring 420 is configured as a deformable body. In this embodiment, since the protruding ring 420 is a deformable body, after the disc body 112 is connected to the mounting structure, the protruding ring 420 is clamped between the two and can deform to fill the space between the disc body 112 and the mounting structure, significantly improving the sealing effect between the two. Furthermore, the protruding ring 420 is annular, and the sealing gasket 400 is fitted over the sleeve body 111, so the protruding ring 420 can provide a sealing effect at all points in the circumferential direction of the sleeve body 111, improving the overall waterproof effect of the waterproof plug structure 10.

[0052] Please see Figure 8 In one embodiment, the disc body 112 has a threaded hole 113, and the disc body 112 can be configured to be connected to a mounting structure via a threaded connector.

[0053] Please see Figure 8 and Figure 9 In one embodiment, the disc body 112 includes a positioning block 115 disposed on the outer periphery of the disc body 112 on the side opposite to the sealing member 300. The outer periphery of the sealing gasket 400 has a positioning groove 430. The positioning block 115 and the positioning groove 430 are positioned and engaged to quickly position the installation of the sealing gasket 400, so that the sealing gasket 400 can be securely clamped between the disc body 112 and the mounting structure.

[0054] In one embodiment, the ring portion 110 further includes a snap-fit ​​114 disposed on the outer periphery of the sleeve 111. The snap-fit ​​114 can be used to engage with the plug-in structure to maintain a secure connection between the waterproof plug structure 10 and the plug-in structure after they are plugged in. In other words, the waterproof plug structure 10 can be configured as part of a snap-fit ​​connector, which is simple to operate and has strong vibration resistance. The waterproof effect of snap-fit ​​connectors in conventional technology is generally poor; however, snap-fit ​​connectors configured with the waterproof plug structure 10 provided in the embodiments of this application can have a better waterproof effect, which can improve the applicable environment of the snap-fit ​​connector.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A waterproof plug end structure, characterized by comprising: The waterproof plug structure includes: The housing has a plug-in end at one end for plugging into a plug-in structure, and an adhesive receiving groove at the other end of the housing. The adhesive receiving groove includes a main groove and a receiving groove, and the receiving groove is located on at least one side wall of the main groove. A terminal, wherein the terminal passes through the housing, one end of the terminal passes through the plug-in end, and the other end extends outward relative to the housing through the adhesive groove; A sealing component, wherein the sealing component is filled in the adhesive groove and covers the outside of the terminal.

2. The waterproof plug end structure according to claim 1, wherein The housing includes a ring portion and a partition portion. The partition portion is disposed inside the ring portion. The partition portion and a portion of the inner peripheral wall of the ring portion together form the adhesive receiving groove. The receiving groove is recessed in the partition portion.

3. The waterproof plug end structure according to claim 2, wherein The partition portion has a connection hole. The terminal includes a body and a limiting component. The limiting component is located on the outer periphery of the body. The body passes through the connection hole. Part of the limiting component is located inside the connection hole and is limited and engaged with the hole wall of the connection hole. Another part of the limiting component is located inside the adhesive groove and is limited and engaged with the sealing adhesive.

4. The waterproof plug end structure according to claim 3, wherein The limiting component includes a first limiting ring and a second limiting ring. The first limiting ring and the second limiting ring are spaced apart on the outer periphery of the body along the axis of the body. The first limiting ring is located in the connecting hole to limit and cooperate with the hole wall of the connecting hole, and the second limiting ring is located in the adhesive groove to limit and cooperate with the sealing adhesive.

5. The waterproof plug structure according to claim 4, characterized in that, In a longitudinal section passing through the axis of the body, the shape of the second limiting ring is constructed as any one of a triangle, a semicircle, an ellipse, or a rectangle.

6. The waterproof plug structure according to claim 3, characterized in that, The partition also includes a positioning platform, which protrudes from the wall of the connecting hole. The terminal also includes a positioning part, which is located on the outer periphery of the body and abuts against the positioning platform.

7. The waterproof plug structure according to any one of claims 3 to 6, characterized in that, Some of the terminals are inserted through the receiving groove, and a portion of the limiting portion of the terminal is located within the receiving groove; Some of the terminals are inserted into the main groove, and some of the limiting portions of the terminals are located inside the main groove.

8. The waterproof plug structure according to claim 2, characterized in that, The waterproof plug structure also includes a sealing gasket. The ring sleeve includes a sleeve body and a disc body. The sleeve body is hollow. The disc body is connected to the outer periphery of the sleeve body. The disc body is used to connect with an external installation structure. The sealing gasket is located on the side of the disc body facing the installation structure and is fitted over the sleeve body.

9. The waterproof plug structure according to claim 8, characterized in that, The sealing gasket includes a gasket body and a protruding ring. The protruding ring protrudes from the gasket body on the side opposite to the disc body. The protruding ring is used to abut against the mounting structure and is configured as a deformable body.

10. An electrical connector, characterized in that, The electrical connector includes the waterproof plug structure as described in any one of claims 1 to 9.

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