Electrical connector

Abstract

This utility model discloses an electrical connector, relating to the field of connector technology. The electrical connector includes a socket; a plug adapted to the socket; a first locking structure for locking the plug and socket in a first locked state; a second locking structure for locking the plug and socket in a second locked state; and a limiting structure slidably disposed on the plug to allow the second locking structure to be in a locked or unlockable state. When the second locking structure is locked, the plug and socket are in a third locked state. During the insertion process of the plug and socket, pushing the plug causes the plug and socket to be in the first locked state, and continuing to push the plug causes the plug and socket to be in the second locked state. The technical solution provided by this utility model makes the plug-socket connection more stable.

Description

Technical Field

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

[0002] Common connectors typically consist of two parts: a plug and a socket. The plug is inserted into the socket to achieve physical connection and electrical conduction. However, after the plug and socket are connected, there is a lack of an effective locking mechanism. The connection is maintained only by the insertion and a slight interference fit, which makes the connection between the plug and socket unstable and easy to separate, thus affecting data transmission. Utility Model Content

[0003] The main purpose of this invention is to propose an electrical connector that aims to solve the technical problem of unstable connection between plugs and sockets.

[0004] To achieve the above objectives, the electrical connector proposed in this utility model includes:

[0005] socket;

[0006] A plug, which is compatible with the socket;

[0007] A first locking structure is used to lock the plug and the socket so that the plug and the socket are in a first locked state;

[0008] The second locking structure is used to lock the plug and the socket so that the plug and the socket are in a second locked state;

[0009] A limiting structure is slidably disposed on the plug so that the second locking structure is in a locked or unlockable state; when the second locking structure is locked, the plug and the socket are in a third locked state;

[0010] During the process of plugging the plug into the socket, pushing the plug causes the plug and the socket to be in the first locking state, and continuing to push the plug causes the plug and the socket to be in the second locking state.

[0011] In one embodiment, the first locking structure includes a buckle and a limiting plate. The buckle is disposed outside the socket, and the limiting plate is disposed on the plug. The limiting plate and the plug form a slot. In the first locking state, the buckle engages with the slot.

[0012] In one embodiment, the end of the plug away from the socket is provided with a mounting cavity, and the end of the mounting cavity away from the socket is open;

[0013] The second locking structure includes a pressing locking piece and a snap-fit ​​protrusion. The snap-fit ​​protrusion is located on the outer wall of the end of the socket facing the plug. The pressing locking piece is located in the mounting cavity and has a locking end. When the plug is pushed, the socket is inserted into the plug, and the snap-fit ​​protrusion engages with the locking end to lock, so that the plug and the socket are in the second locking state.

[0014] In one embodiment, the plug has a connection hole communicating with the mounting cavity, and the press-lock plate further includes an operating end opposite to the locking end, the operating end being exposed in the connection hole, and by pressing the operating end, the locking end is released from the locking protrusion.

[0015] In one embodiment, the limiting structure is configured as a limiting lock piece, the limiting lock piece comprising:

[0016] The mounting part is slidably disposed within the mounting cavity;

[0017] A stop block is provided on the side of the mounting part facing the connection hole. By pushing the mounting part toward the interior of the mounting cavity at the opening, the stop block slides to the bottom of the operating end to restrict the pressing of the operating end and lock the second locking structure.

[0018] In one embodiment, the limiting locking plate further includes a first cantilever, disposed on the mounting portion and extending toward the interior of the mounting cavity. The end of the first cantilever away from the mounting portion is provided with a first abutting protrusion, and in the third locking state, the first abutting protrusion abuts against the locking end.

[0019] In one embodiment, the inner wall of the mounting cavity is provided with a snap-fit ​​position, and the first cantilever is provided with a second abutment protrusion. In the first locked state, the second abutment protrusion snaps into the snap-fit ​​position. In the second locked state, the snap-fit ​​protrusion abuts against the first abutment protrusion, causing the first cantilever to deform and drive the second abutment protrusion away from the snap-fit ​​position, so as to push the limiting locking piece to the second locking structure for locking.

[0020] In one embodiment, the plug has a limiting hole communicating with the mounting cavity, and the limiting locking piece further includes a second cantilever, the second cantilever being disposed on the mounting portion and extending toward the mounting cavity, and a limiting protrusion being provided at the end of the second cantilever away from the mounting portion. In the second locking state, the limiting protrusion is disposed in the mounting cavity, and in the third locking state, the limiting protrusion is disposed in the limiting hole to restrict the disengagement of the limiting locking piece.

[0021] In one embodiment, the electrical connector further includes a tail cap disposed on the side of the plug away from the socket, the tail cap serving to prevent the locking tab from disengaging from the mounting cavity.

[0022] In one embodiment, the tail cap has a protruding edge on the side facing the plug, and the protruding edge is located at the opening of the mounting cavity, for abutting against the mounting part when the limiting locking piece is pulled.

[0023] In the technical solution of this utility model, the electrical connector includes a plug and a socket. The plug and socket move relative to each other to achieve insertion. During the relative movement, the plug and socket first achieve a first locking state through a first locking structure. Then, as the movement continues, the plug and socket achieve a second locking state through a second locking structure. Finally, the second locking structure is locked by a sliding limit structure, making the plug and socket a third locking state. From the first locking state to the third locking state, the connection between the plug and socket is more stable. Through the reverse sliding limit structure, the second locking structure is made to be in an unlockable state, thereby gradually unlocking the second locking structure and the first locking structure. This allows the plug and socket to gradually achieve one unlock and two unlocks, which can prevent the plug and socket from disengaging due to collisions or other external forces after insertion, and can also prevent disengagement due to misoperation, thus improving the quality of signal transmission. Attached Figure Description

[0024] 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.

[0025] Figure 1 A schematic diagram of the third locking state of the electrical connector provided by this utility model;

[0026] Figure 2 A schematic diagram of the electrical connector in the separated state provided by this utility model;

[0027] Figure 3 An exploded view of the electrical connector provided by this utility model;

[0028] Figure 4 A front view schematic diagram of the electrical connector in the detached state provided by this utility model;

[0029] Figure 5 for Figure 4 A schematic cross-sectional view along the AA direction;

[0030] Figure 6 for Figure 4 Cross-sectional schematic diagram along the BB direction;

[0031] Figure 7 A front view schematic diagram of the first locking state of the electrical connector provided by this utility model;

[0032] Figure 8 for Figure 7 A cross-sectional view along the CC direction;

[0033] Figure 9 for Figure 7 A schematic cross-sectional view along the DD direction;

[0034] Figure 10 A front view schematic diagram of the third locking state of the electrical connector provided by this utility model;

[0035] Figure 11 for Figure 10 A cross-sectional view along the EE direction;

[0036] Figure 12 for Figure 10 A cross-sectional view along the FF direction;

[0037] Figure 13 A schematic diagram of the second locking structure provided by this utility model in an unlockable state;

[0038] Figure 14 A schematic diagram of the second locking structure provided by this utility model in the locked state.

[0039] Explanation of icon numbers:

[0040] 100. Socket;

[0041] 200, plug; 210, mounting cavity; 211, connection hole; 212, snap-fit ​​position; 220, limiting hole;

[0042] 300. First locking structure; 310. Buckle; 320. Limiting plate; 321. Slot; 322. Force-applying end; 323. Limiting end;

[0043] 400. Second locking structure; 410. Pressing locking piece; 411. Locking end; 412. Operating end; 420. Snap-fit ​​protrusion;

[0044] 500, Limiting locking plate; 510, Mounting part; 520, Stop block; 530, First cantilever; 531, First abutting protrusion; 532, Second abutting protrusion; 540, Second cantilever; 541, Limiting protrusion;

[0045] 600, tail cap; 610, raised edge.

[0046] 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

[0047] 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.

[0048] 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.

[0049] 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.

[0050] This utility model proposes an electrical connector.

[0051] Please see Figure 1 , Figure 2 and Figure 3 In one embodiment of this utility model, the electrical connector includes:

[0052] Socket 100;

[0053] Plug 200, plug 200 is compatible with socket 100;

[0054] The first locking structure 300 is used to lock the plug 200 and the socket 100 so that the plug 200 and the socket 100 are in a first locked state;

[0055] The second locking structure 400 is used to lock the plug 200 and the socket 100 so that the plug 200 and the socket 100 are in a second locked state;

[0056] The limiting structure is slidably disposed on the plug 200 so that the second locking structure 400 is in a locked or unlockable state; when the second locking structure 400 is locked, the plug 200 and the socket 100 are in a third locking state.

[0057] During the insertion of the plug 200 and the socket 100, pushing the plug 200 puts the plug 200 and the socket 100 into a first locking state, and continuing to push the plug 200 puts the plug 200 and the socket 100 into a second locking state.

[0058] In the technical solution of this utility model, the electrical connector includes a plug 200 and a socket 100. The plug 200 and the socket 100 move relative to each other to achieve insertion. During the relative movement, the plug 200 and the socket 100 first achieve a first locking state through a first locking structure 300. Then, as they continue to move, the plug 200 and the socket 100 achieve a second locking state through a second locking structure 400. Finally, the second locking structure 400 is locked by a sliding limit structure, making the plug 200 and the socket 100 a third locking state. From the first locking state to the third locking state, the connection between the plug 200 and the socket 100 is more stable. Through the reverse sliding limit structure, the second locking structure 400 is made to be in an unlockable state, thereby gradually unlocking the second locking structure 400 and the first locking structure 300. This allows the plug 200 and the socket 100 to gradually achieve one unlocking and two unlockings, which can prevent the plug 200 and the socket 100 from disengaging due to collisions or other external forces after insertion, and can also prevent disengagement due to misoperation, thus improving the quality of signal transmission.

[0059] Specifically, the electrical connector includes a plug 200 and a socket 100. In this embodiment, the socket 100 is kept stationary, and the plug 200 is pushed to achieve insertion between the plug 200 and the socket 100. In other embodiments, the socket 100 and the plug 200 can also be moved towards each other to achieve insertion; this is not limited here. The socket 100 includes a socket 100 housing, and socket 100 terminals are disposed within the socket 100 housing. The plug 200 includes a plug 200 housing, and plug 200 terminals are disposed within the plug 200 housing. When the socket 100 and the plug 200 are inserted, the plug 200 terminals contact and conduct with the socket 100 terminals. In this embodiment, the connection between the plug 200 and the socket 100 is made more stable. For ease of understanding, the plug 200 terminals and the socket 100 terminals are not shown.

[0060] Please refer to Figure 3 , Figure 7 and Figure 9In an embodiment of this utility model, the first locking structure 300 includes a buckle 310 and a limiting plate 320. The buckle 310 is located outside the socket 100, and the limiting plate 320 is located on the plug 200. The limiting plate 320 and the plug 200 form a slot 321. In the first locking state, the buckle 310 is engaged with the slot 321.

[0061] Specifically, such as Figure 2 , Figure 3 and Figure 4 As shown, a latch 310 is provided on the outside of the socket 100. The latch 310 is inclined and its height increases from the side near the plug 200 to the side away from the plug 200. A movable hole is provided on the plug 200, and a limiting plate 320 is provided at the movable hole so that the limiting plate 320 and the outer shell of the plug 200 are on the same plane. The end of the limiting plate 320 away from the socket 100 is configured as the force-applying end 322, and the end near the socket 100 is the limiting end 323. The width between the two sides of the portion of the limiting plate 320 near the limiting end 323 is smaller than the width of the limiting end 323, so as to form a groove 321 in the movable hole. Figure 5 As shown, at this time, the plug 200 and the socket 100 are in a separated state. When the plug 200 is inserted into the socket, the inclined surface of the latch 310 first contacts the outer shell of the plug 200 and gradually moves into the plug 200 until the latch 310 is engaged in the slot 321. At this time, the latch 310 is in the slot 321, as shown. Figure 9 As shown, if the plug 200 and the socket 100 move away from each other, the higher end of the latch 310 abuts against the limiting end 323, making the plug 200 and the socket 100 unable to move further, thus preventing the plug 200 and the socket 100 from disengaging and putting the plug 200 and the socket 100 in the first locking state.

[0062] In the first locked state, such as Figure 2 and Figure 7 As shown, when the force-applying end 322 is installed inside the plug 200, due to the lever principle, the limiting end 323 of the limiting plate 320 tilts upward, thereby releasing the restriction on the buckle 310. At this time, pulling the plug 200 away from the socket 100 will completely disengage the plug 200 from the socket 100.

[0063] Please refer to Figure 8 , Figure 10 and Figure 12 In an embodiment of this utility model, the end of the plug 200 away from the socket 100 is provided with a mounting cavity 210, and the end of the mounting cavity 210 away from the socket 100 is open.

[0064] The second locking structure 400 includes a pressing locking piece 410 and a snap-fit ​​protrusion 420. The snap-fit ​​protrusion 420 is located on the outer wall of the end of the socket 100 facing the plug 200. The pressing locking piece 410 is located in the mounting cavity 210 and has a locking end 411. When the plug 200 is pushed, the socket 100 is inserted into the plug 200, and the snap-fit ​​protrusion 420 and the locking end 411 engage and lock, so that the plug 200 and the socket 100 are in a second locked state.

[0065] Specifically, such as Figure 6 As shown, the second locking structure 400 includes a pressing locking piece 410 and a snap-fit ​​protrusion 420 disposed on the socket 100. The plug 200 has an installation cavity 210 inside one side of the limiting plate 320. When the pressing locking piece 410 is inserted into the installation cavity 210 from the end away from the socket 100, and the plug 200 and socket 100 are connected to form a first locking state, as shown... Figure 8 As shown, the snap-fit ​​protrusion 420 of the socket 100 is inserted into the movable cavity. As the plug 200 and / or socket 100 are pushed further, the snap-fit ​​protrusion 420 engages with the locking end 411 to lock, further tightening the plug 200 and socket 100, making the connection more stable.

[0066] In one embodiment, please refer to Figure 12 and Figure 13 The structure of the snap-fit ​​protrusion 420 is similar to that of the buckle 310. The end away from the plug 200 is higher than the end near the plug 200. The pressing locking piece 410 includes a mounting block and a connecting plate. A hole is provided in the middle of the connecting plate. The connecting plate is configured as a locking end 411. When the plug 200 is plugged into the socket 100, the snap-fit ​​protrusion 420 is inserted into the hole and is limited by the end of the connecting plate away from the mounting block. In order to ensure a smoother connection between the connecting plate and the snap-fit ​​protrusion 420, the end of the connecting plate is set to an inclined state and is adapted to the inclination of the snap-fit ​​protrusion 420 to facilitate their staggered limiting.

[0067] Please refer to Figure 8 In an embodiment of this utility model, the plug 200 has a connecting hole 211 that communicates with the mounting cavity 210. The pressing locking piece 410 also includes an operating end 412 opposite to the locking end 411. The operating end 412 is exposed in the connecting hole 211. By pressing the operating end 412, the locking end 411 is released from the locking protrusion 420.

[0068] Specifically, the mounting block is configured as an operating end 412. When unlocking the second locking structure 400, pressing the operating end 412 causes the end of the connecting plate opposite to the operating end 412 to lift due to the lever principle, thereby releasing the restriction on the snap-fit ​​protrusion 420. Then, by pressing the force application end 322, the first locking structure 300 is unlocked, thereby realizing the first and second unlocking of the plug 200 and the socket 100. Without pressing the operating end 412, the connecting plate and the snap-fit ​​protrusion 420 are snapped and locked together. Together with the first locking structure 300, the plug 200 and the socket 100 are locked twice, making the connection more stable and further reducing the risk of the plug 200 and socket 100 separating due to misoperation.

[0069] In one embodiment, the pressing locking piece 410 is detachably connected to the mounting cavity 210. If the pressing locking piece 410 is damaged, the pressing locking piece 410 can be replaced separately without replacing the entire plug 200, thus reducing maintenance and usage costs.

[0070] Please refer to Figure 12-14 In an embodiment of this utility model, the limiting structure is configured as a limiting locking piece 500, which includes a mounting part 510 and a stop 520. The mounting part 510 is slidably disposed in the mounting cavity 210; the stop 520 is disposed on the side of the mounting part 510 facing the connecting hole 211. By pushing the mounting part 510 toward the inside of the mounting cavity 210 at the opening, the stop 520 slides to the bottom of the operating end 412 to limit the pressing of the operating end 412 and lock the second locking structure 400.

[0071] Specifically, the limiting lock plate 500 includes a mounting part 510 and a stop 520. The mounting part 510 is located on the side of the pressing lock plate 410 near the opening of the mounting cavity 210, and the stop 520 is located on the side of the mounting part 510 facing into the mounting cavity 210. When the plug 200 and the socket 100 are in the second locking state, the mounting part 510 is pushed inward in the mounting cavity 210, and the stop 520 slides to the bottom of the operating end 412. At this time, the operating end 412 cannot be pressed, and the second locking structure 400 cannot be unlocked, so the plug 200 and the socket 100 cannot be opened. In one embodiment, the stop 520 is configured as two side-by-side baffles, and the height of the two baffles is lower than that of the operating end 412, so that when the sliding mounting part 510 is in motion, the baffles slide to the bottom of the operating end 412. When the limiting locking piece 500 is slid toward the opening of the mounting cavity 210, the mounting part 510 is pulled outward. The movement of the mounting part 510 causes the stop 520 to move outward together. The stop 520 moves away from the operating end 412. At this time, the operating end 412 can be pressed down to unlock the second locking structure 400. The second locking structure 400 is in an unlockable state. The setting of the limiting locking piece 500 provides further protection for the connection between the plug 200 and the socket 100 of the second locking structure 400.

[0072] Please refer to Figure 12 In an embodiment of this utility model, the limiting locking plate 500 further includes a first cantilever 530, which is disposed in the mounting portion 510 and extends toward the interior of the mounting cavity 210. The end of the first cantilever 530 away from the mounting portion 510 is provided with a first abutting protrusion 531. In the third locking state, the first abutting protrusion 531 abuts against the locking end 411.

[0073] Specifically, the first cantilever 530 is located on the side of the mounting portion 510 where the stop 520 is located, and extends away from the mounting portion 510. The stop 520 is located on the first cantilever 530. A protrusion forming a first abutting protrusion 531 is located at the end of the first cantilever 530 on the side where the stop 520 is located. The first abutting protrusion 531 and the stop 520 are located on the same side of the first cantilever 530. In the plug 200 and socket 100 separation state, the first locking state, and the second locking state, the first cantilever 530 is located in the hole of the connecting plate, and the first abutting protrusion 531 is close to the end of the connecting plate away from the operating end 412. When the limiting locking piece 500 is pushed into the mounting cavity 210, the limiting locking piece 500 moves towards the locking protrusion 420. At this time, the first abutting protrusion 531 passes through the hole and moves to the side of the locking end 411 away from the locking protrusion 420, i.e. Figure 12 As shown, the first abutting protrusion 531, the locking end 411, and the snap-fit ​​protrusion 420 form an abutting limit.

[0074] Please refer to Figure 8 and Figure 12 In one embodiment, the inner wall of the mounting cavity 210 is provided with a snap-fit ​​position 212, and the first cantilever 530 is provided with a second abutting protrusion 532. In the first locking state, the second abutting protrusion 532 snaps into the snap-fit ​​position 212. In the second locking state, the snap-fit ​​protrusion 420 abuts against the first abutting protrusion 531, causing the first cantilever 530 to deform and drive the second abutting protrusion 532 away from the snap-fit ​​position 212, so as to push the limiting locking piece 500 to the second locking structure 400 for locking.

[0075] Specifically, the inner wall of the mounting cavity 210 is provided with a protrusion forming a locking position 212 for engaging with a second abutting protrusion 532 on the first cantilever 530. The second abutting protrusion 532 is located in the middle part of the first cantilever 530 and extends in the opposite direction to the first abutting protrusion 531. In the first locked state, the second abutting protrusion 532 is engaged at the locking position 212, restricting the sliding of the first cantilever 530 and the limiting locking piece 500 into the mounting cavity 210. When the plug 200 is further pushed, the locking protrusion 420 engages. The first cantilever 530 is moved between the first cantilever 530 and the inner wall of the mounting cavity 210, and abuts against the first abutting protrusion 531 so that the first abutting protrusion 531 abuts against the other side of the mounting cavity 210, causing it to deform. At this time, the second abutting protrusion 532 moves away from the locking position 212, and the locking position 212 releases the restriction on the second locking protrusion 420. At this time, the limiting locking piece 500 is pushed towards the mounting cavity 210, so that the stop block 520 moves below the operating end 412, thereby locking the second locking structure 400 and preventing the second locking structure 400 from unlocking.

[0076] Please refer to Figure 9 and Figure 11 In an embodiment of this utility model, the plug 200 has a limiting hole 220 communicating with the mounting cavity 210, and the limiting locking piece 500 further includes a second cantilever 540. The second cantilever 540 is disposed on the mounting part 510 and extends toward the mounting cavity 210. A limiting protrusion 541 is provided at one end of the second cantilever 540 away from the mounting part 510. In the second locking state, the limiting protrusion 541 is disposed in the mounting cavity 210, and in the third locking state, the limiting protrusion 541 is disposed in the limiting hole 220 to restrict the disengagement of the limiting locking piece 500.

[0077] Specifically, such as Figure 13As shown, a second cantilever 540 is also provided on one side of the mounting part 510 where the first cantilever 530 is provided. The extension direction of the second cantilever 540 is the same as that of the first cantilever 530, but the length of the second cantilever 540 is less than that of the first cantilever 530. A limiting protrusion 541 is provided at the end of the second cantilever 540. The protrusion direction of the limiting protrusion 541 is the same as that of the first abutting protrusion 531. Limiting holes 220 are provided on both sides of the mounting cavity 210, connecting the mounting cavity 210 to the outside of the plug 200. The limiting locking piece 500 is pushed within the mounting cavity 210 until the limiting protrusion 541 moves to the limiting hole 220 and engages there. The limiting hole 220 prevents the limiting locking piece 500 from disengaging. At this time, the stop block 520 moves precisely below the operating end 412, and the electrical connector is in the third locking state. Figure 11 and Figure 14 As shown, the second locking structure 400 is locked, and the plug 200 and socket 100 are in a third locked state. Because the limiting hole 220 engages with the limiting protrusion 541, the entire structure is in an inconvenient unlocking state. When it is necessary to open the connector, the limiting locking piece 500 is forcibly pulled away from the socket 100, causing the limiting protrusion 541 to disengage from the limiting hole 220, and the stop 520 to move away from the operating end 412, allowing the second locking structure 400 to be unlocked. In the unlocked state, pressing the operating end 412 releases the lock on the latching protrusion 420, completing the first unlocking of the plug 200 and socket 100. Pulling the plug 200 and socket 100 away from each other until the latch 310 abuts against the limiting end 323, and then pressing the force application end 322 causes the limiting end 323 to tilt upwards, releasing the locking of the latch 310 by the limiting plate 320, completing the second unlocking of the plug 200 and socket 100, and the two are now in a separated state. This can be understood as follows: when the plug 200 and socket 100 are in the third locked state, the limiting locking plate 500 must be pulled forcefully to disengage the limiting protrusion 541 from the limiting hole 220, thus making the second locking structure 400 unlockable, thereby performing the first and second unlocking. This reduces the probability of accidental separation of the plug 200 and socket 100, making the connection between the socket 100 and plug 200 more stable.

[0078] In one embodiment, two second cantilever arms 540 are provided and symmetrically arranged on both sides of the first cantilever arm 530. Two corresponding limiting holes 220 are also provided. In the third locking state, each limiting protrusion 541 is correspondingly arranged in a limiting hole 220.

[0079] Please refer to Figure 1 , Figure 3 and Figure 9In this embodiment of the present invention, the electrical connector further includes a tail cover 600. The tail cover 600 is located on the side of the plug 200 away from the socket 100. The tail cover 600 is used to restrict the limiting locking piece 500 from disengaging from the mounting cavity 210. The tail cover 600 is fastened to the end of the plug 200 away from the socket 100 and is fixedly connected to the plug 200, such as by gluing or by screws. There are no restrictions here. When the limiting locking piece 500 is pulled outward, due to the need to use a large force, the limiting protrusion 541 may easily disengage from the mounting hole 220 due to inertia at the moment it disengages from the limiting hole 220, causing it to need to be reassembled next time, which is inconvenient to use. By setting the tail cover 600, the opening of the limiting locking piece 500 disengaging from the mounting cavity 210 can be blocked.

[0080] Please refer to Figure 1 , Figure 3 and Figure 9 In one embodiment, the tail cap 600 is provided with a protruding edge 610 on the side facing the plug 200. The protruding edge 610 is provided at the opening of the mounting cavity 210 and is used to abut against the mounting part 510 when the limiting locking piece 500 is pulled. When the tail cap 600 is fastened to the end of the plug 200, the protruding edge 610 is provided on the side of the mounting cavity 210 with the opening. When the mounting part 510 is pulled, the mounting part 510 abuts against the protruding edge 610, thereby preventing the limiting locking piece 500 from disengaging from the opening.

[0081] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection 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 scope of protection of the present utility model.

Claims

1. An electrical connector, characterized in that, include: socket; A plug, which is compatible with the socket; A first locking structure is used to lock the plug and the socket so that the plug and the socket are in a first locked state; The second locking structure is used to lock the plug and the socket so that the plug and the socket are in a second locked state; A limiting structure is slidably disposed on the plug so that the second locking structure is in a locked or unlockable state; when the second locking structure is locked, the plug and the socket are in a third locked state; During the process of plugging the plug into the socket, pushing the plug causes the plug and the socket to be in the first locking state, and continuing to push the plug causes the plug and the socket to be in the second locking state.

2. The electrical connector of claim 1, wherein, The first locking structure includes a buckle and a limiting plate. The buckle is located outside the socket, and the limiting plate is located on the plug. The limiting plate and the plug form a slot. In the first locking state, the buckle engages with the slot.

3. The electrical connector of claim 1, wherein, The plug has a mounting cavity at the end away from the socket, and the mounting cavity is open at the end away from the socket; The second locking structure includes a pressing locking piece and a snap-fit ​​protrusion. The snap-fit ​​protrusion is located on the outer wall of the end of the socket facing the plug. The pressing locking piece is located in the mounting cavity and has a locking end. When the plug is pushed, the socket is inserted into the plug, and the snap-fit ​​protrusion engages with the locking end to lock, so that the plug and the socket are in the second locking state.

4. The electrical connector of claim 3, wherein, The plug has a connection hole communicating with the mounting cavity. The press-lock plate also includes an operating end opposite to the locking end. The operating end is exposed in the connection hole. By pressing the operating end, the locking end is released from the locking protrusion.

5. The electrical connector of claim 4, wherein, The limiting structure is configured as a limiting lock piece, and the limiting lock piece includes: The mounting part is slidably disposed within the mounting cavity; A stop block is provided on the side of the mounting part facing the connection hole. By pushing the mounting part toward the interior of the mounting cavity at the opening, the stop block slides to the bottom of the operating end to restrict the pressing of the operating end and lock the second locking structure.

6. The electrical connector of claim 5, wherein, The limiting locking plate also includes a first cantilever, which is disposed in the mounting part and extends toward the interior of the mounting cavity. The end of the first cantilever away from the mounting part is provided with a first abutting protrusion. In the third locking state, the first abutting protrusion abuts against the locking end.

7. The electrical connector of claim 6, wherein, The inner wall of the mounting cavity is provided with a snap-fit ​​position, and the first cantilever is provided with a second abutment protrusion. In the first locked state, the second abutment protrusion snaps into the snap-fit ​​position. In the second locked state, the snap-fit ​​protrusion abuts against the first abutment protrusion, causing the first cantilever to deform and drive the second abutment protrusion away from the snap-fit ​​position, so as to push the limiting locking piece to the second locking structure for locking.

8. The electrical connector of claim 7, wherein, The plug has a limiting hole communicating with the mounting cavity. The limiting locking piece also includes a second cantilever. The second cantilever is disposed on the mounting part and extends toward the mounting cavity. A limiting protrusion is provided at the end of the second cantilever away from the mounting part. In the second locking state, the limiting protrusion is disposed in the mounting cavity. In the third locking state, the limiting protrusion is disposed in the limiting hole to restrict the disengagement of the limiting locking piece.

9. The electrical connector as claimed in claim 8, characterized in that, The electrical connector also includes a tail cap located on the side of the plug away from the socket, the tail cap being used to prevent the locking plate from disengaging from the mounting cavity.

10. The electrical connector of claim 9, wherein, The tail cap has a protruding edge on the side facing the plug. The protruding edge is located at the opening of the mounting cavity and is used to abut against the mounting part when the limiting lock piece is pulled.

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