plug-in structure

By introducing a wire harness fastening structure with elastic washers and adjusting rings into the connectors, the leakage problem of the connectors in water-accumulated environments is solved, thereby improving the waterproof effect and applicability.

CN224935091UActive Publication Date: 2026-11-03HANGZHOU JD ELECTRIC CO LTD
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Patent Information

Application Number
CN202522524200.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-27
Publication Date
2026-11-03
Estimated Expiration
2035-11-27

AI Technical Summary

Technical Problem

The existing connectors lack a waterproof structure, which makes them prone to leakage in watery environments, posing a safety hazard.

Method used

A plug-in structure is designed, which includes a wire harness fastening structure with an elastic washer and an adjusting ring. The inner hole size of the elastic washer is adjusted by the adjusting ring to accommodate the cable, ensuring that the elastic washer fits tightly against the outside of the cable to form a waterproof effect. Electrical connection is achieved through the cooperation of conductive protrusions and grooves.

Benefits of technology

The connectors have improved waterproof performance, are compatible with cables of different sizes, reduce the risk of leakage, and enhance safety and applicability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of plug-in structure, it is related to plug-in piece technical field, plug-in structure includes two plug-in pieces, each plug-in piece includes outer shell, inner shell and wiring harness fastening structure, the two ends of outer shell are respectively equipped with inlet and opening;Inner shell is equipped at opening, and with the installation position of outer shell cooperation, inner shell is provided with a plurality of conductive elements, and conductive element is used to be electrically connected with cable;Wiring harness fastening structure includes elastic washer and adjusting ring, the end of elastic washer is fixedly equipped with the outside of outer shell, and the inner hole of elastic washer and inlet are communicated and set, adjusting ring is movably sleeved on the outside of elastic washer along first direction, and at least part of inner diameter of adjusting ring is gradually reduced in the direction away from outer shell, adjusting ring can adjust the inner hole size of elastic washer in the process of rotation to adapt the size of cable;The technical scheme provided by the utility model can improve the waterproof performance of plug-in piece, and make plug-in piece can adapt to cable of different sizes.
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Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a connector structure. Background Technology

[0002] A connector is a mechanical device used to establish a detachable electrical connection between two or more electrical or electronic components. They typically consist of male and female connectors, and connection and disconnection are achieved through insertion and removal. Improving the safety performance of connectors to provide safer electrical connections and prevent electrical damage to people and equipment is a major concern today.

[0003] Currently, connectors on the market are usually not waterproof. However, many industrial sites have water accumulation or potential water splashes. In such working environments, connectors are very likely to cause accidents such as electrical leakage, posing a huge threat to people's lives and property. Utility Model Content

[0004] The main purpose of this invention is to propose a plug-in structure that aims to improve the waterproof performance of plug-in components.

[0005] To achieve the above objectives, the present invention proposes a plug-in structure comprising two mating plug-in components, wherein the two plug-in components include a male plug-in component and a female plug-in component, and each plug-in component includes: The outer casing has a cable inlet and an opening at both ends in the first direction, and the cable inlet is used to pass through the cable. An inner housing, located at the opening and having a mounting position that mates with the outer housing, is provided with a plurality of conductive elements, which are positioned directly opposite the opening and are used for electrical connection with the cable; and, A wire harness fastening structure includes an elastic washer and an adjusting ring. The end of the elastic washer is fixed to the outside of the housing, and the inner hole of the elastic washer is connected to the inlet. The adjusting ring is movably sleeved on the outside of the elastic washer in a first direction, and at least a portion of the inner diameter of the adjusting ring is gradually reduced in the direction away from the housing. The adjusting ring can adjust the inner hole size of the elastic washer during rotation to adapt to the size of the cable. The male connector has conductive elements including conductive protrusions, and the female connector has conductive elements including conductive grooves. The conductive protrusions and conductive grooves cooperate with each other to electrically connect the multiple conductive elements on the male connector and the female connector one by one.

[0006] In one embodiment, a protrusion is formed on the outer side of the outer casing, the protrusion provides the cable inlet, the elastic washer is connected to the protrusion, and the outer side of the protrusion is provided with external threads; The regulating ring includes: An adjusting nut is threaded onto the outside of the protrusion; A mating ring is fixedly disposed at the end of the adjusting nut away from the outer casing. The inner hole of the mating ring corresponds to the inlet, and the diameter of the mating ring gradually decreases in the direction away from the outer casing.

[0007] In one embodiment, an abutment ring is provided on the outer side of the elastic washer, the inner ring surface of the abutment ring contacts the elastic washer, and the outer ring surface abuts the adjustment ring. The abutment ring is made of a flexible material so that it can contract radially to adjust the size of the inner hole of the elastic washer.

[0008] In one embodiment, a plurality of abutment blocks are provided on the outer side of the elastic washer, one end of each abutment block is fixedly connected to the elastic washer, and the other end extends radially and abuts against the adjusting ring; The abutment block is made of flexible material.

[0009] In one embodiment, each of the abutment blocks is tilted in the direction in which the adjusting nut is screwed in.

[0010] In one embodiment, the abutment block is arc-shaped, and the distance between two adjacent abutment blocks gradually increases as the elastic washer extends radially.

[0011] In one embodiment, a mating groove is provided on the inner side of the outer shell, and a mating slider is provided on the outer side of the inner shell corresponding to the mating groove; and / or, The conductive element includes a PIN pin terminal and a wire-locking copper pillar, wherein the PIN pin terminal and the wire-locking copper pillar are integrally machined; and / or, The elastic washer is integrally formed with the outer shell.

[0012] In one embodiment, the connector further includes a grounding structure, which includes a grounding element and a conductive plate. The grounding element is electrically connected to the conductive plate, which is arc-shaped and is used to electrically connect to the conductive plate of the other mating connector. The conductive sheet of one of the two connectors is bent downwards, while the conductive sheet of the other connector is bent upwards.

[0013] In one embodiment, the plug-in structure further includes an anti-detachment structure, which includes a limiting protrusion and a connector. The limiting protrusion is disposed on the side of the housing of one of the plug-in components, and the connector is rotatably mounted on the housing of the other plug-in component. When the two plug-in components are engaged with each other, the connector can rotate to engage with the limiting protrusion.

[0014] In one embodiment, the connector includes: Two adapters are provided on opposite sides of the corresponding housing and are connected to the corresponding housing via a pivot. The main body is located between the two connecting parts; When the adapter engages with the limiting protrusion, the main body can cover the outside of the two connectors.

[0015] In the technical solution of this utility model, when electrically connecting the cable to the connector, the cable needs to be sequentially passed through the adjusting ring, the elastic washer, and the inlet, and further installed on the conductive element provided on the inner shell. Since the cable passes through the wire harness fastening structure, and at least part of the inner diameter of the adjusting ring is gradually reduced in the direction away from the outer shell, and the adjusting ring can adjust the inner hole size of the elastic washer during rotation to adapt to the size of the cable, ensuring that the elastic washer is tightly attached to the outer side of the cable, thereby achieving a waterproof effect. In addition, since the inner hole size of the elastic washer in this structure gradually decreases until it adapts to the size of the cable, the technical solution of this utility model can also enable the connector to adapt to cables of different sizes, improving the applicability of the connector. Attached Figure Description

[0016] 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.

[0017] Figure 1 A schematic diagram of an embodiment of the plug-in structure provided by this utility model; Figure 2 for Figure 1 A schematic diagram of the male connector in the diagram; Figure 3 for Figure 1 A schematic diagram of the structure of the female connector in the diagram; Figure 4 A schematic diagram of the male connector structure in another embodiment of the plug-in structure provided for this utility model; Figure 5 A schematic diagram of the female connector structure in another embodiment of the plug-in structure provided for this utility model; Figure 6 for Figure 2 A schematic diagram of the inner housing and adjusting ring of the male connector; Figure 7 for Figure 2 A schematic diagram of the conductive elements, grounding structure, and regulating ring of the male connector; Figure 8 for Figure 2 A schematic diagram of the adjusting ring structure of the male connector; Figure 9 for Figure 8 A cross-sectional view of the regulating ring in the middle; Figure 10 for Figure 3 A schematic diagram of the structure of the elastic washer and the outer shell of the female connector.

[0018] Explanation of icon numbers: 100. Plug-in structure; 1. Male plug-in; 11. Conductive protrusion; 2. Female plug-in; 21. Conductive groove; 3. Outer shell; 31. Cable inlet; 32. Opening; 33. Protrusion; 34. Mating groove; 4. Inner shell; 41. Conductive element; 411. PIN terminal; 412. Locking copper post; 42. Mating slider; 5. Wire harness fastening structure; 51. Elastic washer; 511. Abutment block; 52. Adjusting ring; 521. Adjusting nut; 522. Mating ring; 6. Grounding structure; 61. Grounding element; 62. Conductive sheet; 7. Anti-detachment structure; 71. Limiting protrusion; 72. Connector; 721. Adapter; 722. Main body; 8. Mounting screw.

[0019] 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. Detailed Implementation

[0020] 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 scope of protection of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. 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 impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] A connector is a mechanical device used to establish a detachable electrical connection between two or more electrical or electronic components. They typically consist of male and female connectors, and connection and disconnection are achieved through insertion and removal. Improving the safety performance of connectors to provide safer electrical connections and prevent electrical damage to people and equipment is a major concern today.

[0024] Currently, connectors on the market are usually not waterproof. However, many industrial sites have water accumulation or potential water splashes. In such working environments, connectors are very likely to cause accidents such as electrical leakage, posing a huge threat to people's lives and property.

[0025] This utility model proposes a plug-in structure 100, which can improve the waterproof performance of the plug and enable the plug to adapt to cables of different sizes.

[0026] Please see Figures 1 to 3In one embodiment of this utility model, the plug-in structure 100 includes two mutually cooperating plug-in components, namely a male plug-in component 1 and a female plug-in component 2. Each plug-in component includes an outer shell 3, an inner shell 4, and a wire harness fastening structure 5. The outer shell 3 has a wire inlet 31 and an opening 32 at its two ends in a first direction, respectively. The wire inlet 31 is used to pass a cable through. The inner shell 4 is located at the opening 32 and has an installation position that cooperates with the outer shell 3. The inner shell 4 is provided with a plurality of conductive elements 41, which are positioned opposite the opening 32 and are used to electrically connect with the cable. The wire harness fastening structure 5 includes an elastic washer 51 and an adjusting ring 52. The elastic washer 51... The end of the cable is fixed to the outside of the outer shell 3, and the inner hole of the elastic washer 51 is connected to the inlet 31. The adjusting ring 52 is movably sleeved on the outside of the elastic washer 51 in the first direction, and at least part of the inner diameter of the adjusting ring 52 is gradually reduced in the direction away from the outer shell 3. The adjusting ring 52 can adjust the inner hole size of the elastic washer 51 during rotation to adapt to the size of the cable. The conductive element 41 of the male connector 1 includes a conductive protrusion 11, and the conductive element 41 of the female connector 2 includes a conductive groove 21. The conductive protrusion 11 and the conductive groove 21 cooperate with each other to electrically connect the multiple conductive elements 41 on the male connector 1 and the female connector 2 one by one.

[0027] In the technical solution of this utility model, when the cable is electrically connected to the connector, the cable needs to be passed through the adjusting ring 52, the elastic washer 51 and the inlet 31 in sequence, and then installed on the conductive element 41 provided on the inner shell 4. Since the cable is passed through the wire harness fastening structure 5, and at least part of the inner diameter of the adjusting ring 52 is gradually reduced in the direction away from the outer shell 3, and the adjusting ring 52 can adjust the inner hole size of the elastic washer 51 during rotation to adapt to the size of the cable, ensuring that the elastic washer 51 is in close contact with the outer side of the cable, thereby achieving a waterproof effect. In addition, since the inner hole size of the elastic washer 51 in this structure gradually decreases until it adapts to the size of the cable, the technical solution of this utility model can also make the connector adapt to cables of different sizes, improving the applicability of the connector.

[0028] It should be noted that this utility model does not limit the specific number of the conductive elements 41 provided on the inner housing 4. Please refer to [link / reference]. Figures 2 to 5 The embodiments of this utility model provide a four-core connector with three conductive elements 41 and a five-core connector with four conductive elements 41. The following description will take the five-core connector as an example.

[0029] Please see Figure 2 , Figures 8 to 10 In one embodiment of this utility model, a protrusion 33 is formed on the outer side of the outer shell 3, and the inlet 31 is opened in the protrusion 33. The elastic washer 51 is connected to the protrusion 33, and the outer side of the protrusion 33 is provided with external threads. The adjusting ring 52 includes an adjusting nut 521 and a mating ring 522. The adjusting nut 521 is threadedly sleeved on the outside of the protrusion 33. The mating ring 522 is fixedly disposed at the end of the adjusting nut 521 away from the outer shell 3. The inner hole of the mating ring 522 is correspondingly disposed with respect to the inlet 31, and the diameter of the hole of the mating ring 522 gradually decreases in the direction away from the outer shell 3. In other words, the engagement of the thread on the outer side of the protrusion 33 with the adjusting nut 521 enables the adjusting nut 521 to move along the first direction during rotation. Since the mating ring 522 is fixed to the adjusting nut 521, the mating ring 522 also moves along the first direction. Furthermore, since the aperture of the mating ring 522 gradually decreases in the direction away from the outer shell 3, when the mating ring 522 moves towards the outer shell 3, the inner diameter of the mating ring 522 at the cable inlet 31 gradually decreases, thereby achieving the effect of adjusting the inner hole size of the elastic washer 51 to adapt to the size of the cable.

[0030] It should be noted that the present invention does not limit the specific structure of the elastic washer 51. For example, in another embodiment of the present invention, an abutment ring is provided on the outer side of the elastic washer 51. The inner ring surface of the abutment ring contacts the elastic washer 51, and the outer ring surface abuts against the adjusting ring 52. The abutment ring is made of flexible material so that it can contract radially to adjust the size of the inner hole of the elastic washer 51. In this embodiment, an abutment ring is provided on the outer side of the elastic washer 51. When the adjusting ring 52 rotates inward, it will squeeze the abutment ring. Since the abutment ring is made of flexible material, the abutment ring will deform and further squeeze the elastic washer 51, and further give the elastic washer 51 a radial compressive force, so that the inner hole size of the elastic washer 51 is adjusted to adapt to the size of the cable.

[0031] Please see Figure 10In this embodiment of the invention, a plurality of abutment blocks 511 are provided on the outer side of the elastic washer 51. One end of each abutment block 511 is fixedly connected to the elastic washer 51, and the other end extends radially and abuts against the adjusting ring 52. The abutment block 511 is made of flexible material. In this embodiment, by setting a plurality of abutment blocks 511 on the outer side of the elastic washer 51, and the abutment blocks 511 are made of flexible material, compared with the abutment ring in the above embodiment, the abutment blocks 511 in this embodiment can also adjust the inner hole size of the elastic washer 51 when the adjusting ring 52 rotates inward, and require less material, thus saving resources. It should be noted that this invention does not impose specific limitations on the size of the elastic washer 51, as long as it ensures that when the adjusting ring 52 rotates inward, it can press the abutment block 511 inward to adjust the inner hole size of the elastic washer 511. To facilitate the adjustment of the adjusting nut 521, in this embodiment of the invention, each of the abutment blocks 511 is inclined in the direction in which the adjusting nut 521 is screwed in. That is, because each of the abutment blocks 511 is inclined in the direction in which the adjusting nut 521 is screwed in, the adjusting nut 521 is easier to screw in and less likely to be pushed outward by the restoring force of the elastic washer 51, thus strengthening the wire harness fastening structure 5.

[0032] It should be noted that the present invention does not limit the specific shape of each abutment block 511. For example, in another embodiment of the present invention, the abutment block 511 is arc-shaped, and the distance between two adjacent abutment blocks 511 gradually increases as the elastic washer 51 extends radially. That is to say, in this embodiment, the abutment block 511 is arc-shaped, and the distance between two adjacent abutment blocks 511 gradually increases as the elastic washer 51 extends radially, meaning that the inclination angles of the multiple abutment blocks 511 are not the same. In this embodiment, the arc-shaped abutment block 511 not only facilitates the deformation of the abutment block 511, but also has a larger contact area with the adjusting ring 52, reducing the pressure between the abutment block 511 and the adjusting ring 52, thereby giving the structure a longer service life.

[0033] Please see Figure 2 and Figure 6 In one embodiment of this utility model, a mating groove 34 is provided on the inner side of the outer shell 3, and a mating slider 42 is provided on the outer side of the inner shell 4 corresponding to the mating groove 34. Through the design of the mating groove 34 and the mating slider 42, when the inner shell 4 moves to the installation position via the mating groove 34, the positions of the inner shell 4 and the outer shell 3 can be fixed by the mounting screws 8, thereby completing the installation of the inner shell 4 and the outer shell 3. Please refer to [link to previous text]. Figure 7 In another embodiment of this utility model, the conductive element 41 includes a PIN pin terminal 411 and a wire-locking copper pillar 412, which are integrally machined. Because the PIN pin terminal 411 and the wire-locking copper pillar 412 are integrally machined, the electrical stability and strength of the conductive element 41 are ensured. In yet another embodiment of this utility model, the elastic washer 51 is integrally formed with the outer shell 3. Specifically, in this embodiment, the elastic washer 51 and the outer shell 3 are integrally injection molded. This structure facilitates installation and prevents external water from flowing into the connector from the gap between the elastic washer 51 and the outer shell 3, thus improving the waterproof effect. It should be noted that the above embodiments can be used selectively or in combination, and this utility model does not limit this.

[0034] To improve the electrical safety of your equipment, please refer to [link / reference]. Figure 2 , Figure 6 and Figure 7 In an embodiment of this utility model, the connector further includes a grounding structure 6, which includes a grounding element 61 and a conductive sheet 62. The grounding element 61 is electrically connected to the conductive sheet 62, which is arc-shaped and used to electrically connect to the conductive sheet 62 of the other connector. One of the conductive sheets 62 of the two connectors is bent downwards, while the other is bent upwards. That is, because the conductive sheet 62 has an arc-shaped structure, when the two connectors are engaged, the conductive sheets 62 abut and press against each other, forming a ')(' shape. This structure ensures that the conductive sheets 62 of the male connector 1 and the female connector 2 can continuously abut and remain connected, improving the stability of the grounding structure 6.

[0035] Please see Figure 1When the male connector 1 and the female connector 2 are engaged, it is necessary to ensure that the male connector 1 and the female connector 2 will not be accidentally pulled out. Therefore, in the embodiment of this utility model, the plug-in structure 100 further includes an anti-disengagement structure 7. The anti-disengagement structure 7 includes a limiting protrusion 71 and a connector 72. The limiting protrusion 71 is provided on the side of the housing of one of the plug-in components. The connector 72 is rotatably mounted on the housing of the other plug-in component. When the two plug-in components are engaged with each other, the connector 72 can rotate to engage with the limiting protrusion 71. Taking the example of the connector 72 being rotatably mounted on the outer shell of the male connector 1 and the limiting protrusion 71 being provided on the side of the outer shell of the female connector 2, when the male connector 1 and the female connector 2 are engaged, the connector 72 will rotate to engage with the limiting protrusion 71 on the side of the outer shell of the female connector 2, thereby preventing the male connector 1 and the female connector 2 from moving away from each other in the first direction and ensuring that the male connector 1 and the female connector 2 will not be accidentally pulled out.

[0036] To prevent external water from flowing into the connector structure 100 through the mating gap between the male connector 1 and the female connector 2, in this embodiment of the invention, the connector 72 includes two adapter portions 721 and a main body 722. The two adapter portions 721 are respectively disposed on opposite sides of the corresponding outer shell and connected to the corresponding outer shell via a pivot. The main body 722 is disposed between the two adapter portions 721. When the adapter portion 721 engages with the limiting protrusion 71, the main body 722 covers the outer sides of the two connectors. In other words, when the adapter portion 721 engages with the limiting protrusion 71, i.e., when the male connector 1 and the female connector 2 engage, the main body 722 covers the space between the male connector 1 and the female connector 2, thereby blocking the mating gap and preventing external water from directly flowing into the connector structure 100 through the mating gap, thus improving the waterproofness of the connector structure 100. Meanwhile, the two adapter portions 721 are respectively located on opposite sides of the outer casing 3, which improves the structural strength of the connector 72. It should be noted that the present invention does not limit the specific form of the rotating shaft, as long as it can ensure that the adapter portion 721 can rotate through the rotating shaft. In the embodiment of the present invention, the rotating shaft is essentially a limiting protrusion 71.

[0037] by Figure 1For example, the following is a specific process and method for assembling the plug-in structure 100 provided by this utility model. First, assemble the male plug-in 1 or the female plug-in 2, check whether the conductive components on the inner housing 4 are intact and functionally undamaged, connect the cable that needs to be electrically connected to the conductive components, then align the mating slider 42 on the inner housing 4 with the mating groove 34 on the outer housing 3, and slide the inner housing 4 and the outer housing 3 together until they reach the installation position. Use the mounting screws 8 to secure the inner housing 4 and the outer housing 3 together. After fixing the outer casing 3, the adjusting ring 52 is aligned with the thread on the outer casing 3 and threaded together, thus completing the assembly of the male connector 1. The assembly method of the female connector 2 is the same. After assembling the male connector 1 and the female connector 2, the connector 72 is rotated and installed on the limiting protrusion 71 of one of the connectors. Then, the openings 32 of the male connector 1 and the female connector are aligned, so that the conductive protrusion 11 of the male connector 1 is inserted into the conductive groove 21 of the female connector 2. The connector 72 is rotated to the locking state, and it can be used normally.

[0038] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A plug-in structure, characterized in that, It includes two mating connectors, each connector comprising a male connector and a female connector, and each connector comprising: The outer casing has a cable inlet and an opening at both ends in the first direction, and the cable inlet is used to pass through the cable. An inner housing, located at the opening and having a mounting position that mates with the outer housing, is provided with a plurality of conductive elements, which are positioned directly opposite the opening and are used for electrical connection with the cable; and, A wire harness fastening structure includes an elastic washer and an adjusting ring. The end of the elastic washer is fixed to the outside of the housing, and the inner hole of the elastic washer is connected to the inlet. The adjusting ring is movably sleeved on the outside of the elastic washer in a first direction, and at least a portion of the inner diameter of the adjusting ring is gradually reduced in the direction away from the housing. The adjusting ring can adjust the inner hole size of the elastic washer during rotation to adapt to the size of the cable. The male connector has conductive elements including conductive protrusions, and the female connector has conductive elements including conductive grooves. The conductive protrusions and conductive grooves cooperate with each other to electrically connect the multiple conductive elements on the male connector and the female connector one by one.

2. The plug-in structure as described in claim 1, characterized in that, The outer side of the outer casing protrudes to form a convex portion, the convex portion has the inlet port, the elastic washer is connected to the convex portion, and the outer side of the convex portion is provided with external threads; The regulating ring includes: An adjusting nut is threaded onto the outside of the protrusion; A mating ring is fixedly disposed at the end of the adjusting nut away from the outer casing. The inner hole of the mating ring corresponds to the inlet, and the diameter of the mating ring gradually decreases in the direction away from the outer casing.

3. The plug-in structure as described in claim 1, characterized in that, An abutment ring is provided on the outer side of the elastic washer. The inner ring surface of the abutment ring contacts the elastic washer, and the outer ring surface abuts against the adjustment ring. The abutment ring is made of flexible material so that it can contract radially to adjust the size of the inner hole of the elastic washer.

4. The plug-in structure as described in claim 2, characterized in that, The elastic washer has multiple abutment blocks on its outer side. One end of each abutment block is fixedly connected to the elastic washer, and the other end extends radially and abuts against the adjusting ring. The abutment block is made of flexible material.

5. The plug-in structure as described in claim 4, characterized in that, Each of the aforementioned abutment blocks is tilted in the direction in which the adjusting nut is screwed in.

6. The plug-in structure as described in claim 5, characterized in that, The abutment block is arc-shaped, and the distance between two adjacent abutment blocks gradually increases as the elastic washer extends radially.

7. The plug-in structure as described in claim 1, characterized in that, The inner side of the outer shell is provided with a mating groove, and the outer side of the inner shell is provided with a mating slider corresponding to the mating groove; and / or, The conductive element includes a PIN pin terminal and a wire-locking copper pillar, wherein the PIN pin terminal and the wire-locking copper pillar are integrally machined; and / or, The elastic washer is integrally formed with the outer shell.

8. The plug-in structure as described in claim 1, characterized in that, The connector further includes a grounding structure, which includes a grounding element and a conductive plate. The grounding element is electrically connected to the conductive plate, which is arc-shaped and is used to electrically connect to the conductive plate of the other connector that is in cooperation with it. The conductive sheet of one of the two connectors is bent downwards, while the conductive sheet of the other connector is bent upwards.

9. The plug-in structure as described in claim 1, characterized in that, The plug-in structure also includes an anti-detachment structure, which includes a limiting protrusion and a connector. The limiting protrusion is located on the side of the housing of one of the plug-in components, and the connector is rotatably mounted on the housing of the other plug-in component. When the two plug-in components are engaged with each other, the connector can rotate to engage with the limiting protrusion.

10. The plug-in structure as described in claim 9, characterized in that, The connector includes: Two adapters are provided on opposite sides of the corresponding housing and are connected to the corresponding housing via a pivot. The main body is located between the two connecting parts; When the adapter engages with the limiting protrusion, the main body can cover the outside of the two connectors.