Electrical connector assembly and plug, socket, plug housing and inner core components thereof

Abstract

The application provides an electric connector assembly and a plug, a socket, a plug shell and an inner core component thereof, which comprise an inner insulator and a locking button, one end of the locking button is connected with the inner insulator, and the locking button further comprises a locking block; when the inner core component is inserted into the adapted plug shell and is in place, the locking block can be clamped in the corresponding clamping groove I of the plug shell to realize the locking and fixing of the inner core component and the plug shell; after the locking button is pressed, the locking block can be separated from the corresponding clamping groove I, so that the inner core component and the plug shell are unlocked and separated. The quick separation and locking between the wiring part and the shell can be realized through a locking mechanism. The wrench locking is adopted in the wiring mode, and the locking operation can be completed by pressing and lifting the wrench, so that the wiring difficulty is greatly reduced and the wiring efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of electrical connector technology, specifically relating to an electrical connector assembly and its plug, socket, plug housing and inner core components. Background Technology

[0002] Electrical connectors are widely used in communications, industry, aerospace, and other fields, requiring quick and reliable connections between plugs and sockets. Field-mounted wire connectors are typically used in indoor or outdoor applications requiring on-site wiring, demanding not only rapid connection and disconnection but also simple and convenient wiring operations. In power transmission applications for field devices, two wiring methods exist: DC isolation systems and DC common ground systems, to meet the needs of different application scenarios.

[0003] Currently, the protective shell for the wiring portion of wired connectors used in field manufacturing typically employs a split structure, with the components connected and locked together by threads. The wiring structure often uses screws for clamping, requiring specialized torque tools for torque control to prevent loosening. The connection between the plug and socket also mostly uses a threaded structure, resulting in low operational efficiency and a lack of visual or audible feedback indicating proper connection. Therefore, existing technology suffers from the following drawbacks: while the threaded connection of the connector head is simple to manufacture, it inevitably leads to low operational efficiency, and there is no identification or feedback after proper connection. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art and provide an inner core component, plug housing, plug, socket, and electrical connector assembly for a field-applied quick-wire connector. This device uses a locking mechanism to achieve rapid separation and locking between the wire-applied part and the housing. The wire-applied method uses a wrench to lock the wire; the wire-applied operation can be completed by pressing and lifting the wrench, greatly reducing the difficulty of wire-applied work and improving efficiency.

[0005] To achieve the above objectives, one objective of this invention is to provide an inner core component for a quick-connect connector, comprising an inner insulator and a locking button. One end of the locking button is connected to the inner insulator, and the locking button further comprises a locking block. When the inner core component is inserted into the matching plug housing, the locking block can be engaged in the corresponding slot I of the plug housing to lock and fix the inner core component and the plug housing. After pressing the locking button, the locking block can disengage from the corresponding slot I, thereby unlocking and separating the inner core component and the plug housing.

[0006] To further improve this solution, the inner core component also includes a wrench locking mechanism. The wrench locking mechanism includes a wrench and a locking plate. The locking plate includes a locking plate connecting end and a locking plate pressing end. The locking plate connecting end abuts against the wrench. When the wrench is lifted away from the plug housing, the locking plate pressing end is lifted accordingly. The locking plate pressing end and the inner insulator can form a gap for cable insertion. When the wrench is pressed down towards the plug housing, the locking plate pressing end can reliably lock the cable.

[0007] To further improve this solution, the inner core component also includes a shielding frame and a conductive sheet. The conductive sheet includes a fixed end and a free end. The fixed end abuts against the contact element provided in the inner insulator, and the free end abuts against the shielding frame.

[0008] To further improve this solution, the inner core component also includes a switching mechanism; the switching mechanism can press against the free end of the conductive sheet, thereby separating the conductive sheet from the shielding frame.

[0009] To further improve this solution, the wrench locking mechanism also includes a torsion spring II. The torsion spring II includes a pressing end, which abuts against the locking plate's pressing end. When locking the wire, the wrench's pressing rod end moves towards the plug housing, and the pressing end of the torsion spring II is squeezed by the locking plate and undergoes elastic deformation. When unlocking, as the wrench's pressing rod end moves away from the plug housing, the torsion spring II, under its own elastic force, pushes the locking plate to rotate.

[0010] To further improve this solution, a support frame is installed in the internal cavity of the inner insulator. The support frame includes a support frame body, the upper and lower end faces of which are in contact with the inner wall of the internal cavity to improve the strength of the inner insulator. The support frame body is provided with a stop part, which is used to abut against the wrench to limit the extreme position when the wrench is tightened. The support frame body is provided with a groove, which is used to accommodate the cable.

[0011] The second objective of this invention is to provide a plug housing, wherein the side wall of the plug end of the plug housing is provided with a slot I, which is used to engage with the locking block of the corresponding inner core component to achieve locking and fixing of the inner core component and the plug housing.

[0012] To further improve this solution, a locking lever is provided on the plug housing. One end of the locking lever has a slot II, which is used to cooperate with the locking structure of the adapter socket to lock the plug and the adapter socket. The other end of the locking lever is a pressing handle. The locking lever has a through hole, and an installation shaft passes through the through hole. The installation shaft is fixed to the outer wall of the plug housing.

[0013] To further improve this solution, a torsion spring I is fitted on the mounting shaft to keep the locking lever and the socket buckle locked.

[0014] To further improve this solution, an insulating pin is provided inside the torsion spring I, and an isolation strip is provided on the outer wall of the insulating pin. An isolation groove is formed between the isolation strips, and the coils of the torsion spring I are distributed in the isolation groove to achieve mutual isolation between adjacent coils.

[0015] To further improve this design, the plug housing is provided with a locking plate, which can slide and adjust relative to the plug housing along the plug axis. When the head seat needs to be locked, the locking plate moves towards the locking lever to a first position, with the locking plate resting against the bottom of the pressing handle to lock the pressing handle and prevent the locking lever's slot II end from accidentally lifting and causing the head seat to separate. When the head seat needs to separate, the locking plate moves away from the locking lever to a second position to release the locking of the pressing handle, allowing the pressing handle to perform a pressing action.

[0016] In a further improvement to this solution, the locking piece includes a locking base plate, on which a positioning piece is provided. One end of the positioning piece is connected to the locking base plate, and the other end is a locking end. A protrusion is formed on the locking end for engaging with a groove on the top surface of the plug housing to position the locking piece in the first and second positions.

[0017] A third objective of this invention is to provide a plug comprising a plug housing as described above and an inner core component as described above, wherein the inner core component is disposed within the plug housing, and the inner core component and the plug housing are locked and fixed by the engagement of a slot I and a locking block.

[0018] To further improve this solution, after the inner core component is inserted into the plug housing, the position of the locking button is offset from the axis of symmetry of the axial cross-section of the plug housing.

[0019] The fourth objective of this invention is to provide a socket, including a socket housing, the socket housing having a buckle, the buckle having a guide slope II for easy insertion and a locking surface II for locking and fixing, the buckle being able to cooperate with the slot II of any of the above-mentioned plug housings.

[0020] To further improve this solution, the socket's inner cavity is provided with an anti-misoperation groove on the socket's mating surface. This anti-misoperation groove is used to engage with the locking button end to prevent the headstock from being mis-inserted.

[0021] A fifth objective of this invention is to provide an electrical connector assembly, including any of the plugs and sockets described above.

[0022] Compared with the prior art, the beneficial effects of the present invention include at least the following: Firstly, this invention improves the structure of the plug, particularly the connection method between the plug shell and the inner core component, thereby achieving rapid separation and locking between the two components. Specifically, a locking button is provided on the inner insulator of the inner core component. The locking button is an elastic component with a locking block. The locking block engages with a slot I on the plug shell. By pressing the locking button, the locking block disengages from the slot, allowing the inner core component to be separated and pulled out of the plug shell. When the inner core component is connected to the plug shell, the locking block falls into slot I to complete the locking action, thus reliably locking the plug shell and the inner core component. The locking block has a guide slope on the locking direction side for easy insertion and reduced operating force. Additionally, a locking surface is provided on the unlocking direction side to ensure reliable locking of the insulator after insertion.

[0023] Secondly, this invention, considering further improvements in cable installation efficiency, incorporates a wrench-locking mechanism. When the wrench is lifted, the locking plate automatically rises under the action of a torsion spring, allowing the cable to be smoothly inserted into the inner core component. When the wrench is pressed down, the wrench presses down on the locking plate, which reliably clamps the cable. The locking process can be completed without the need for additional tools, significantly saving wiring time and improving installation efficiency.

[0024] Thirdly, this invention further considers the reliability of the plug and socket connection by providing a locking lever on the socket housing. The locking lever is mounted on the outer wall of the plug housing via a pivot, which enables quick locking and unlocking and provides visual and audible feedback of proper insertion. This not only improves connection efficiency but also increases connection reliability.

[0025] Fourthly, in order to improve the reliability of the plug and socket connection and prevent the locking lever from being accidentally unlocked, a torsion spring is provided between the locking lever and the plug housing. The torsion spring applies a reaction force to the locking lever to prevent accidental unlocking. At the same time, a locking piece is added between the locking lever and the plug housing. The locking piece can restrict the movement of the locking lever and further increase the safety and reliability of the head-and-socket connection. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the invention 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 the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram showing the wire portion of the plug locked to the plug housing; Figure 2 for Figure 1 Another perspective view; Figure 3 This is a schematic diagram of the locking button structure; Figure 4 This is a schematic diagram of the plug housing. Figure 5 Diagram showing the locking mechanism between the plug and socket; Figure 6 Here is a structural diagram of the locking lever; Figure 7 A three-dimensional view of the locking lever; Figure 8 This is a sectional view of the locking lever; Figure 9 This is a structural diagram of torsion spring I; Figure 10 The structure of a socket that mates with a cord plug Figure 1 ; Figure 11 The structure of a socket that mates with a cord plug Figure 2 ; Figure 12 A diagram showing the arrangement of the first and second grooves; Figure 13 This is a three-dimensional view of the locking plate; Figure 14 This is a side view of the locking piece; Figure 15 Diagram showing the state of the wrench being lifted; Figure 16 Internal structure diagram showing the wrench in the raised position; Figure 17 Diagram showing the wrench in the locked position; Figure 18 Internal structure diagram of the wrench in the locked position; Figure 19 This is a schematic diagram of the longitudinal section of the wrench lever; Figure 20 This is a schematic diagram of the support frame installation: with the wrench tightened. Figure 21 This is a schematic diagram of the support frame installation: with the wrench raised. Figure 22 This is a schematic diagram of the supporting frame structure; Figure 23 For connector DC common ground system Figure 1 ; Figure 24 DC isolation system for connectors Figure 1 ; Figure 25 For connector DC common ground system Figure 2 ; Figure 26 DC isolation system for connectors Figure 2 ; Figure 27 A structural diagram for switching the top head; The diagram shows the following markings: 1. Plug housing; 11. Slot I; 12. Sealing groove; 13. First groove; 14. Second groove; 15. Mounting hole; 16. Step; 17. Slide groove; 18. Axis of symmetry; 2. Inner core component; 21. Inner insulator; 211. Screw hole; 212. Through hole; 213. Through hole; 214. Locking latch; 2141. Locking platform; 22. Locking button; 221. Flexible connection part. 222, Locking block; 222a, Guide slope I; 222b, Locking surface I; 223, Press handle; 23, Contact element; 3, Locking lever; 31, Slot II; 32, Press handle; 33, Through hole; 34, Torsion spring I; 35, Insulating pin; 36, Anti-slip ridge; 37, Guide slope III; 38, Mounting shaft; 4, Locking piece; 41, Locking base plate; 42, Positioning piece; 43, Protrusion. 44. Stop block; 45. Limit block; 46. Push plate; 5. Wrench locking mechanism; 51. Wrench; 511. Pressure rod; 512. Push rod; 513. Locking hole; 514. Lock head; 52. Locking plate; 521. Locking plate connecting end; 522. Locking plate pressing end; 53. Fixed shaft; 54. Limiting shaft; 55. Stop shaft; 56. Torsion spring II; 561. Pressing end; 562. Fixed end; 6. Support 61. Support frame body; 62. Stop platform; 63. Groove; 64. Tenon and mortise connection; 7. DC common ground structure; 71. Shielding frame; 72. Conductive sheet; 73. Fixed shaft; 74. Screw; 75. Switching top head; 751. Slide; 752. Top head; 753. Claw; 8. Socket housing; 81. Buckle; 811. Guide slope II; 812. Locking surface II; 82. Anti-misalignment groove. Detailed Implementation

[0028] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0029] It should be noted that, unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "a," "an," or "the," and similar words used in the specification and claims of this patent application do not express a limitation of quantity, but rather indicate the presence of at least one. Terms such as "comprising" or "including" indicate that the elements or objects preceding "comprising" encompass the elements or objects listed following "comprising" or "including" and their equivalents, but do not exclude other elements or objects having the same function.

[0030] like Figure 1-4 As shown, this embodiment provides a field-mounted quick-connect plug, including a plug housing 1 and an inner core component 2. The inner core component 2 is detachably installed inside the plug housing 1. The inner core component 2 includes an inner insulator 21 and a locking button 22, wherein the locking button 22 is connected to the inner insulator 21 and is integrally formed. The locking button 22 is an elastic body, and the locking button 22 includes an elastic connecting part 221, a locking block 222, and a pressing handle 223. The elastic connecting part 221 is connected to the inner insulator 21, and the pressing handle... 223 is located at the end of the elastic connection 221 away from the inner insulator 21. The locking block 222 is an upward protrusion, located at the connection between the elastic connection 221 and the pressing handle 223. The locking block 222 engages with the slot I11 on the side wall of the plug housing 1 near the port. When wiring is required, the pressing handle 223 of the locking button 22 is manually pressed to separate the locking block 222 from the slot I11. At this time, the inner insulator 21 is unlocked from the plug housing 1 and can be removed for wiring. After wiring, the inner insulator 21 is inserted into the plug housing 1. At this time, the locking block 222 falls into the slot I11 to complete the locking action, and the inner insulator 21 and the plug housing 1 are reliably locked.

[0031] This scheme, as shown in the figure, follows... Figure 3 In the diagram, direction A is the insertion and locking direction. The inner core component 2 is inserted into the plug housing 1 through the port along direction A. A guide ramp I222a is provided on the locking block 222 on the insertion direction side to facilitate easy insertion of the inner core component 2 relative to the plug housing 1 during insertion and locking, reducing operating force. Additionally... Figure 3 The opposite direction of direction A is the unlocking direction. A locking surface I222b is provided on the unlocking side. Preferably, the locking surface I222b is perpendicular to the insertion direction of the socket housing 1 so that the inner insulator 21 can be reliably locked after it is installed. After the inner insulator 21 is locked to the plug housing 1, the locking button 22 is located at a position offset from the axis of symmetry 18 of the axial cross-section of the plug housing 1. Preferably, it is located at the corner of the inner cavity of the plug housing 1. This design allows it to cooperate with the anti-misalignment notch of the corresponding socket mating surface. The purpose is to prevent the plug and socket from being mis-inserted by cooperating with the anti-misalignment groove 82 on the socket. At the same time, being located at the corner of the inner cavity also helps to make full use of the inner cavity space of the plug housing 1. In addition, the locking button 22 and the inner insulator 21 are integrally molded, which simplifies the product structure and reduces the product cost.

[0032] A sealing groove 12 is provided circumferentially near the port of the plug housing 1. The slot I11 on the plug housing 1 is located on the side of the sealing groove 12 near the plug end, so that the overall sealing performance is not affected after the plug and socket are mated. The slot I11 of the plug housing 1 is preferably set as a through groove. The plug end of the plug housing 1 is the port end where the inner core component 2 is installed.

[0033] This solution also includes a locking mechanism for the connection between the plug and the socket, see reference. Figure 5 The locking mechanism includes a locking lever 3 and a protruding buckle 81. The locking lever 3 is on the outer wall of the plug housing 1, and the protruding buckle 81 is located on one side plane of the outer wall of the socket's insertion end. The socket's insertion end refers to the end where the socket and plug are connected. The insertion surface of the buckle 81 is provided with a guide slope II 811. The locking lever 3 is provided with a slot II 31 at one end, which forms a guide slope III 37 that cooperates with the guide slope II 811. This can reduce the insertion force when the head and seat are inserted, so that the head and seat can be locked smoothly through the guiding action without pressing the locking lever 3 during insertion. A locking surface II 812 is formed on the side of the buckle 81 opposite to the insertion surface, which is used to achieve a firm lock after the head and seat are inserted. An anti-misoperation groove 82 is provided in one corner of the socket cavity, corresponding to the locking button of the inner core component 2. When the head is locked, the anti-misoperation groove 82 cooperates with the locking button 22 to prevent the head from being mistakenly inserted and causing damage to the equipment.

[0034] The function of locking lever 3 is to lock the plug and socket together after they are connected. Figure 6-9 One end of the locking lever 3 has a groove II 31, and the other end is a pressing handle 32. Several anti-slip protrusions 36 are added to the pressing surface of the pressing handle 32 to prevent slippage when pressing. A through hole 33 is provided in the middle section of the locking lever 3. The through hole 33 passes through the mounting shaft 38, which is fixed to the outer wall of the plug housing 1, allowing the locking button 3 to be pressed and rotated at a certain angle in the installation position. When the head seat is inserted, the protruding buckle 61 pushes the locking lever 3 up and into the groove II 31 of the locking lever 3, accompanied by a "click" sound, completing the locking action. When disengaging, manually press the pressing handle 32 at the tail end of the locking lever 3 to make the groove end lift up and separate from the buckle 61, thus completing the unlocking action.

[0035] As shown in the figure, in a preferred embodiment, a torsion spring I 34 is added between the locking lever 3 and the plug housing 1. The torsion spring I 34 passes through the mounting shaft 38. The torsion spring I 34 always applies a reaction force to the locking lever 3, so that the locking lever 3 remains locked after being locked with the buckle, preventing the locking lever 3 from being accidentally unlocked and improving the reliability of the connection. Specifically, the torsion spring I 34 has a main spring and two supporting torsion arms led out from the end of the spring coil. The supporting torsion arms are along the central axis of the spring coil. One torsion arm abuts against the end face of the locking lever 3, and the other torsion arm abuts against the outer wall of the plug housing 1. When the pressing handle 32 of the locking lever 3 is pressed, the two supporting torsion arms of the torsion spring I 34 move closer together and the torsion spring I 34 is in a tensioned state. The reaction force of the torsion spring I 34 on the locking lever 3 will become larger and larger, thus avoiding accidental lifting that would cause the locking lever 3 to unlock.

[0036] In another preferred embodiment, an insulating pin 35 is provided inside the torsion spring I 34. The insulating pin 35 passes through the mounting shaft 38 and is rotatably connected to the mounting shaft 38. Isolation protrusions are provided on the outer wall of the insulating pin 35, and isolation grooves 351 are formed between the isolation protrusions. Each torsion spring coil of the torsion spring I 34 is disposed in the isolation groove 351 to achieve mutual isolation between adjacent coils. The coils are separated from each other by the isolation grooves 351, which can effectively avoid the PIM problem caused by contact between coils.

[0037] When installing the locking rod 3 in this design, first install the torsion spring I 34 and the insulating pin 35 at their corresponding positions on the plug housing 1. Two parallel bosses 15 are provided on the outer wall of the plug housing 1 along its central axis. The locking rod 3 is installed between the two bosses 15. Mounting holes 151 are provided at corresponding positions on the two bosses 15. Then, the mounting shaft 38 passes through the mounting hole 151 of one boss 15 on the plug housing 1 and extends out through the mounting hole 151 of the other boss 15. Finally, the end of the mounting shaft 38 is fixed to the mounting hole 151. The end of the mounting shaft 38 can be fixed to the plug housing 1 by riveting, bonding, or using a nut. It should be noted that the groove 17 that cooperates with the locking piece 4 is located at one end of the boss 15.

[0038] In this embodiment, as Figure 12-14A locking piece 4 is added between the locking rod 3 and the plug housing 1. The purpose of the locking piece 4 is to prevent the locking rod 3 from accidentally lifting and separating from the buckle 61 during normal insertion. Two grooves are formed on the outer surface of the plug housing 1 to limit the locking piece 4 at two positions along the pushing direction. The two positions refer to the locking position and the unlocking position of the locking piece 4. Therefore, the two grooves need to be set along the axial direction of the plug housing 1. The two grooves are the first groove 13 and the second groove 14. The first groove 13 is a quarter-circumference arc groove, and the second groove 14 is a half-circumference arc groove. The locking piece 4 can adopt the following structure: The locking piece 4 includes a locking base plate 41, a positioning piece 42 and a stop block 44. A notch is formed on the pushing side of the locking base plate 41 along the pushing direction of the locking piece 4. A positioning piece 42 is provided in the notch. One end of the positioning piece 42 is elastically connected in the notch. A protrusion 43 is formed in the middle of the lower end face of the positioning piece 42 for... Two grooves on the top surface of the plug housing 1 are used to limit the position of the locking piece 4. A limit block 45 is provided at the free end of the positioning piece 42. The limit block 45 cooperates with the step 16 on the edge of the housing groove where the locking rod 3 is installed, blocking the limit block 45 at the step 16, thus limiting the limit position of the locking piece 4 in the outward pull-out unlocked state. Sliding pieces 47 are also provided on both sides of the locking base plate 41, and side sliding grooves 152 are provided inside the protrusions 15 on both sides of the locking piece 4. Preferably, The side slide groove 152 is located at the end of the boss 15 away from the mounting hole 151. The locking piece 4 is pushed along the central axis of the plug housing 1 within the side slide groove 152 by the sliding piece 47. Due to the action of the limiting block 45, the locking piece 4 is guaranteed not to disengage from the side slide groove 152. The stop block 44 is located at the end of the locking base plate 41 away from the notch. The stop block 44 extends from the locking base plate 41 towards the pressing part 32, and its purpose is to form a stop engagement with the end stop platform of the pressing handle 32. Preferably, there are two stop blocks 44, which respectively form a stop limit on the pressing handle 32 from both sides. The stop effect formed by this design will be more reliable. A push plate 46 is provided between the two stop blocks 44 for the operator to manually push and adjust the locking piece 4. At the end of the boss 15, there is also a relief groove 153 connected to the side slide groove 152. The push plate 43 is pushed to the side of the locking rod 3 to the limit position. The push plate 43 just enters the relief groove 153, thereby limiting the limit position of the locking piece 4 in the locked state.

[0039] In this design, the adjustment principle of the locking plate 4 is as follows: The locking plate 4 has two positions. When the locking plate 4 moves axially towards the locking lever 3 to the first position, the protrusion 43 is located in the first groove 13, and the stop block 44 supports and abuts against the tail of the pressing handle 32, preventing accidental contact with the pressing handle 32 from causing the locking lever 3 to lift and separate the head seat. When separation of the head seat is required, the locking plate 4 is pulled away from the locking lever 3 until the protrusion 43 is located in the second groove 14. At this time, the locking plate 4 is limited to the second position and no longer restricts the pressing action of the locking lever 3, allowing the two to separate normally. When the locking plate 4 is pushed to the second position away from the end of the slot I11 of the locking lever 3, the pressing handle 32 is in the unlocked state, and the operator can unlock and separate the plug and socket by manually pressing the pressing handle 32.

[0040] In this embodiment, a wrench locking mechanism 5 is also provided. The wrench locking mechanism 5 includes a wrench 51 and a locking plate 52. One end of the locking plate 52 is always in contact with the corresponding end of the wrench 51, but not directly connected. Both the wrench 51 and the locking plate 52 are rotatably installed in the plug housing 1. The wrench 51 is rotatably installed inside the inner insulator 11 through a fixed shaft 53. The locking plate 52 is located between a limiting shaft 54 ​​and the gap formed by the inner insulator 21. The wrench 51 can adopt the following structure: the wrench 51 includes a pressure rod end 511 and a push rod end 512. The connecting part of the pressure rod end 511 and the push rod end 512 is rotatably connected to the fixed shaft 53 on the inner insulator 21.

[0041] The locking piece 52 has a bent structure, including a locking piece connecting end 521 and a locking piece pressing end 522. The bend of the locking piece 52 has a smooth transition. An arc-shaped groove structure is provided on the inner insulator 21. A fixed limiting shaft 54 ​​and a stop shaft 55 are provided on one side of the arc-shaped groove structure. The stop shaft 55 is located on one side of the limiting shaft 54. The central axis of the limiting shaft 54 ​​and the central axis of the stop shaft 55 are parallel. The limiting shaft 54 ​​and the arc-shaped groove of the inner insulator 21 form a fitting gap. The bent part is installed in the fitting gap. A torsion spring II 56 is fitted on the limiting shaft 53. Preferably, the torsion spring II 56 is a torsion spring sheet. One end of the torsion spring II 56 is a fixed end 562 and the other end is a pressing end 561. The pressing end 561 of the torsion spring II 56 is a raised bent structure. The torsion spring II 56 is located between the locking piece 52 and the limiting shaft 54. The raised side of the bent part of the pressing end 561 of the torsion spring II 56 abuts against the inner side of the locking piece 52, and the concave side of the bent part of the torsion spring II 56 contacts the limiting shaft 54.

[0042] By forming a bent structure at the end of the fixed end 562 of the torsion spring II 56 that cooperates with the stop shaft 55, the fixed end 562 of the torsion spring 56 is limited by the stop shaft 55 and cannot move along... Figure 16When the lever end 511 of the wrench 51 is turned in the direction of B, the pressing end 561 of the torsion spring II 56 abuts against the inner side of the locking plate connecting end 521 of the locking plate 52. When the lever end 511 of the wrench 51 is pressed towards the plug housing 1, the locking plate 52 is pushed along... Figure 16 When the entire structure rotates in the B direction, the locking plate 52 is rotated to the locking position by the push rod end 512 (the locking position refers to the extreme point position after the locking plate 52 rotates counterclockwise after the wrench 51 is pressed down). The arc surface of the push rod end 512 is in close contact with the locking plate connection end 521. At this time, the end of the locking plate pressure end 522 is pressed against the cable to reliably lock the cable. The torsion spring II 56 is pressed by the locking plate connection end 521. The pressing end 561 of the torsion spring II 56 undergoes elastic deformation towards its fixed end 562. When the pressing rod end 511 of the wrench 51 is lifted away from the plug housing 1, the torsion spring II 56 presses the locking plate connection end 521 under its own elastic force, thereby pushing the locking plate 52 to rotate back to its original position (the original position refers to the limit point position after the locking plate 52 rotates clockwise after the wrench 51 is lifted). At this time, the locking plate 52 rotates and lifts as a whole to restore the relaxed state, thereby unlocking the cable. At this time, the cable can be inserted into the space enclosed by the locking plate 52 and the inner insulator 21 to perform the locking action, or the cable can be pulled out from the enclosed space. A latch 214 is provided on the upper end face of the inner insulator 21. A locking platform 2141 is provided on the locking side of the latch 214. A locking hole 513 is provided on the wrench 51 at the position corresponding to the latch 24. A locking arm 514 is provided in the locking hole 513. One end of the locking arm 514 is connected to the inner wall of the locking hole 513. When the wrench 51 is pressed down, the upper end of the latch 214 enters the locking hole 513, and the other end of the locking arm 514 can abut against the locking platform 2141 of the latch 214, so that the wrench 51 is locked and fixed, thereby preventing the torsion spring II 56 from rebounding.

[0043] The working principle of the wrench locking mechanism 5 is as follows: Figure 15 and 16 When wiring the inner core, first lift the wrench 51 counterclockwise. The locking plate 52 will then lift clockwise under the elastic pressure of the torsion spring II 56. At this point, the cable can be inserted into the hole where the locking plate 52 is located. Then... Figure 17 and 18 Press the wrench 51 clockwise back to its original position, and the locking plate 52 will be pressed counterclockwise to the locked position, at which point the locking plate 52 can reliably lock the cable. The cable locking process can be completed without the need for additional tools, which greatly saves wiring time and improves installation efficiency.

[0044] This solution also includes a DC common ground structure 7, which has the following structure: The DC common ground structure 7 includes a shielding frame 71, a conductive sheet 72, and a fixed shaft 73; a contact 23 is provided inside the inner insulator 21 near the inner core component's mating surface; the shielding frame 7 is located on the outer wall of the inner insulator 21 near the inner core component's mating surface; the fixed shaft 73 is horizontally fixed inside the inner insulator 21, and the central axis of the fixed shaft 73 is perpendicular to the central axis of the plug housing 1; one end of the conductive sheet 72 is electrically connected to the contact 23, and the other end is bent around the fixed shaft 73 towards the contact 23 and then abuts against the shielding frame 71; the concave surface of the bent part of the conductive sheet 72 is in contact with the fixed shaft 73, and the conductive sheet 72 is fixed by the fixed shaft 73. Through the contact between the conductive sheet 72 and the shielding frame, the shielding frame 71 and the contact 23 can be electrically connected, forming a DC common ground system. By setting a fixed shaft 73, the support force at the bend of the conductive sheet 72 and the resistance to deformation of the conductive sheet 72 are enhanced, thereby ensuring that the conductive sheet 72 and the shielding frame 71 can reliably contact each other.

[0045] In this solution, the DC common ground structure 7 can be replaced with a DC isolation switching structure. When it is necessary to convert the DC common ground system to a DC isolation system, the free end of the conductive sheet 72 can be pressed down by the switching mechanism to separate the conductive sheet 72 from the shielding frame 71, so as to switch the connector from the DC common ground system to the DC isolation system.

[0046] The DC isolation switching structure is obtained by further adding a switching mechanism on the basis of the DC common ground structure 7 described above. The function of the switching mechanism is to press down the conductive sheet 72 so that its end contact separates from the shielding frame 71. It can adopt the following structure. The first structure is: the switching mechanism includes a screw hole 211 and a screw 74. The screw hole 211 is provided on the side wall of the inner insulating part 21. The screw hole 211 is set directly corresponding to the conductive sheet 72. The screw 74 is threadedly connected to the screw hole 215. When it is necessary to switch the DC common ground system to the DC isolation system, the screw 74 is screwed into the screw hole. The screw 74 compresses the conductive sheet 72, causing the contact 23 to disconnect from the shielding frame 71. At this time, the DC isolation system can be formed. After the screw 74 is unscrewed from the screw hole 211, the conductive sheet 72 returns to its original position under its own elasticity. At this time, the conductive sheet 72 and the shielding frame 71 are in contact and connected, and the connector is switched to the DC common ground system.

[0047] The second structure is as follows: The switching mechanism includes a light hole 212 and a switching head 75. A light hole 212 is provided on the side wall of the inner insulating member 21, corresponding directly to the conductive sheet 72. The switching head 75 is inserted into the light hole 212. The switching head 75 includes a slide 751, with a head 752 at the lower end of the slide 751. A resilient claw 753 is provided on one side of the slide 752, and the connecting end of the resilient claw 753 is fixedly connected to the slide 751. When the head 752 of the switching head 75 engages with the lock... When the clamping plate 52 is in contact with the light hole 212, the elastic claw 753 is located inside the light hole 212. The free end of the elastic claw 753 is pressed and abuts against the inner wall of the light hole 212. The switching head 75 continues to descend, and the elastic claw 753 is exposed from the light hole 212. Under its own elastic force, it pops out to the side away from the slide 751, thereby abutting against the step at the lower end of the light hole 212 to limit the switching head 75. At this time, the locking plate 52 is bent and deformed by pressure, thereby separating from the shielding frame 71 and completing the locking and fixing of the position of the locking plate 52. A through hole 213 is provided on one side of the inner insulating member 21 at the lower end of the light hole 212. The purpose of the through hole 213 is to allow manual insertion of a tool into the through hole 213 to push the elastic claw 753 closer to the slide 751 and deform it. The elastic claw 753 releases the locking plate 52 from its position lock. The locking plate 52 returns to its original shape under its own elastic force and contacts the shielding frame 71, switching from the DC isolation system to the DC common ground system. At the same time, the switching head 75 is pushed upward from the light hole 212. Based on this structure, a pull-out handle can also be provided at the end of the slide 751 away from the head 752 for manual assistance in pulling out the switching head 75, so that the switching head 75 can be pushed upward from the light hole 212.

[0048] In a DC common ground system, since the contact 23, conductive sheet 72, shielding frame 71, and plug housing 1 form a shielded conductive link, each component inside the plug can be grounded through the shielded conductive link formed by the shielding frame 71 and plug housing 1. After switching to a DC isolation system, the shielded conduction between the conductive sheet 72 and the shielding frame 71 is disconnected. In this case, each component inside the plug needs to be grounded by setting a separate wire. The above two systems can meet the different needs of users. In this embodiment, the switching between the DC common ground system and the DC isolation system can be completed by screwing in and out the screw 74 of the connector or by switching the top head 75 at the construction site, which greatly increases the flexibility and convenience of on-site construction and also reduces the complexity of the supply chain system.

[0049] In this design, the inner insulator 21 has a cavity inside, and a support frame 6 is installed inside the cavity. The support frame 6 includes a support frame body 61, which has a rectangular cross-section. A stop portion extends outward from the upper edge of the support frame body 61, and a stop platform 62 protruding to one side is formed at the outermost edge of the stop portion. The stop platform 62 limits the downward pressure limit of the wrench 61. The stop platform 62 can abut against the push rod end 512 of the wrench 51, thereby limiting the limit position of the push rod end 512. A groove 63 for accommodating cables extends outward from the lower edge of the support frame body 61. The groove 63 and the stop platform 62 are located on the same side of the support frame body 61. The groove 63 has a U-shaped cross-section to accommodate the cable. After the plug is installed, the cable end and the terminal of the contact 23 are located at... Inside the groove 63, when the locking piece 52 presses the cable, the side walls of the groove 63 can limit the amount of deformation of the cable to both sides after being pressed. The support frame 6 is a frame structure formed by bending a metal sheet. The two ends of the metal sheet are connected by a tenon and mortise joint as shown in Figure 64. Of course, other fixed connection methods can also be used. The support frame 6 is placed in the cavity so that the upper and lower end faces of the support frame 6 are in contact with the inner wall of the cavity of the inner insulator 21, thereby enhancing the deformation resistance of the inner insulator 21. A groove-shaped viewing window is formed between the stop platform 62 of the support frame 6 and the groove 63. This corresponds to the viewing window mirror on the inner insulator 21, which can actually observe the actual position and working state of the locking piece 52 inside the inner insulator 21. The support frame 6 can be set independently or integrated with the contact piece 23. The integrated structure is more convenient for installation.

[0050] This solution also provides an electrical connector assembly, including the aforementioned wire plug and a socket that mates with the plug, as can be found in [reference]. Figure 5 The socket housing 8 is provided with a buckle 81 that mates with the slot II 31. The buckle 81 has a guide slope II 811 for easy insertion and a locking surface II 812, which are used to reduce the insertion force when the head is inserted and to ensure a secure lock after insertion. On the mating surface of the socket, a mis-insertion groove 82 is provided at one corner of the socket cavity. The mis-insertion groove 82 is used to avoid the end of the locking button 22, and can mate with the end of the locking button 22 when the head is locked, thereby preventing the head from being mis-inserted and avoiding damage to the equipment.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An inner core component of a quick-connect wire connector, characterized in that: The device includes an inner insulator (21) and a locking button (22). One end of the locking button (22) is connected to the inner insulator (21). The locking button (22) also includes a locking block (222). When the inner core component (2) is inserted into the matching plug housing (1), the locking block (222) can be locked in the corresponding slot I (11) of the plug housing (1) to lock and fix the inner core component (2) and the plug housing (1). After pressing the locking button (22), the locking block (222) can be disengaged from the corresponding slot I (11) to unlock and separate the inner core component (2) and the plug housing (1). The plug end of the plug housing (1) is the end with the port into which the inner core component (2) is inserted. The inner core component (2) also includes a shielding frame (71) and a conductive sheet (72). The conductive sheet (72) includes a fixed end and a free end. Its fixed end abuts against the contact (23) provided in the inner insulator (21), and its free end abuts against the shielding frame (71). The inner core component (2) also includes a switching mechanism; the switching mechanism can press the free end of the conductive sheet (72) to separate the conductive sheet (72) from the shielding frame (71); wherein, when the conductive sheet (72) and the shielding frame (71) are in contact, they form a DC common ground system; when the switching mechanism presses the free end of the conductive sheet (72) to separate it from the shielding frame (71), the connector switches to a DC isolation system.

2. The inner core component of a quick-wire connector as described in claim 1, characterized in that: The inner core component (2) also includes a wrench locking mechanism (5), which includes a wrench (51) and a locking plate (52). The locking plate (52) includes a locking plate connecting end (521) and a locking plate pressing end (522). The locking plate connecting end (521) abuts against the wrench (51). When the wrench (51) is lifted away from the plug housing (1), the locking plate pressing end (522) is lifted accordingly. The locking plate pressing end (522) and the inner insulator (21) can form a gap for cable insertion. When the wrench (51) is pressed down towards the plug housing (1), the locking plate pressing end (522) can reliably lock the cable.

3. The inner core component of a quick-wire connector as described in claim 2, characterized in that: The wrench locking mechanism (5) also includes a torsion spring II (56), which includes a top pressing end (561). The top pressing end (561) abuts against the locking plate pressing end (522). When locking the wire, the pressing rod end (511) of the wrench (51) moves towards the plug housing (1). The top pressing end (561) of the torsion spring II (56) is squeezed by the locking plate (52) and undergoes elastic deformation. When unlocking, the pressing rod end (511) of the wrench (51) moves away from the plug housing (1). Under the action of its own elastic force, the torsion spring II (56) pushes the locking plate (52) to rotate.

4. The inner core component of a quick-wire connector as described in claim 2, characterized in that: The inner cavity of the inner insulator (21) is fitted with a support frame (6). The support frame (6) includes a support frame body (61). The upper and lower end faces of the support frame body (61) are in contact with the inner wall of the inner cavity to enhance the strength of the inner insulator (21). The support frame body (61) is provided with a stop portion, which is used to abut against the wrench (51) to limit the extreme position when the wrench (51) is tightened. The support frame body (61) is provided with a groove (63), which is used to accommodate cables.

5. A plug, characterized in that: The device includes a plug housing (1) and an inner core component (2) as described in any one of claims 1-4. The plug housing (1) has a slot I (11) on the side wall of the plug end. The inner core component (2) is disposed inside the plug housing (1). The inner core component (2) and the plug housing (1) are locked and fixed by the slot I (11) and the locking block (222).

6. A plug as described in claim 5, characterized in that: After the inner core component (2) is inserted into the plug housing (1), the position of the locking button (22) is offset from the axis of symmetry (18) of the axial cross-section of the plug housing (1).

7. A plug as described in claim 5, characterized in that: The plug housing (1) is provided with a locking rod (3). One end of the locking rod (3) forms a slot II (31). The slot II (31) is used to cooperate with the locking structure of the adapter socket to lock the plug and the adapter socket. The other end of the locking rod (3) is a pressing handle (32). The locking rod (3) is provided with a through hole (33). An installation shaft (38) is inserted into the through hole (33). The installation shaft (38) is fixed on the outer wall of the plug housing (1).

8. A plug as described in claim 7, characterized in that: A torsion spring I (34) is fitted on the mounting shaft (38) to keep the locking lever (3) locked to the socket buckle (81).

9. A plug as described in claim 8, characterized in that: An insulating pin (35) is provided inside the torsion spring I (34), and an isolation strip is provided on the outer wall of the insulating pin (35). An isolation groove (351) is formed between the isolation strips. The coils of the torsion spring I (34) are distributed in the isolation groove (351) to achieve mutual isolation between adjacent coils.

10. A plug as described in any one of claims 7-9, characterized in that: The plug housing (1) is provided with a locking piece (4), which can slide and adjust relative to the plug housing (1) along the plug axis. When the head seat needs to be locked, the locking piece (4) moves to the first position in the direction close to the locking lever (3), and the locking piece (4) rests against the bottom of the pressing handle (32) to lock the pressing handle (32) and prevent the locking lever (3) from accidentally lifting one end of the slot II (31) of the locking lever (3) and causing the head seat to separate. When the head seat needs to be separated, the locking piece (4) moves to the second position in the direction away from the locking lever (3) to release the locking of the pressing handle (32), and the pressing handle (32) can realize the pressing action.

11. A plug as described in claim 10, characterized in that: The locking piece (4) includes a locking base plate (41), on which a positioning piece (42) is provided. One end of the positioning piece (42) is connected to the locking base plate (41), and the other end is a locking end. A protrusion (43) is formed on the locking end, which is used to cooperate with the groove on the top surface of the plug housing (1) to position the locking piece (4) in the first position and the second position.

12. An electrical connector assembly, characterized in that: The device includes a plug as described in any one of claims 5-11 and a socket adapted to the plug. The socket includes a socket housing (8), which has a buckle (81). The buckle (81) has a guide bevel II (811) for easy insertion and a locking surface II (812) for locking. The buckle (81) can cooperate with the slot II (31) of the plug housing (1). The side wall of the plug end of the plug housing (1) is provided with a slot I (11), which is used to engage with the locking block (222) of the corresponding inner core component (2) to realize the locking of the inner core component (2) and the plug housing (1). Locking and fixing; a locking rod (3) is provided on the plug housing (1), and a slot II (31) is formed at one end of the locking rod (3). The slot II (31) is used to cooperate with the locking structure of the adapter socket to lock the plug and the adapter socket; the other end of the locking rod (3) is a pressing handle (32). A through hole (33) is provided on the locking rod (3), and an installation shaft (38) is inserted in the through hole (33). The installation shaft (38) is fixed on the outer wall of the plug housing (1); a torsion spring I (34) is sleeved on the installation shaft (38) to keep the locking rod (3) and the socket buckle locked.

13. An electrical connector assembly according to claim 12, characterized in that, On the plug-in surface of the socket, the inner cavity of the socket is provided with an anti-misoperation groove (82). The anti-misoperation groove (82) is used to engage with the end of the locking button (22) to prevent the head seat from being mis-inserted.

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