A plug and socket assembly for a car charging pile

Abstract

The present invention relates to the technical field of new energy vehicle charging plug and socket combination, and discloses a vehicle charging pile plug and socket assembly, including a plug assembly and a socket assembly, a movable plug-in unit is provided on the plug assembly, a screw is rotatably connected to the top surface of a limit plate of the movable plug-in unit, and a notch is provided at the upper end of the screw; a guide rail is provided on the limit plate; a bearing seat is slidably connected to the guide rail, and a movable sub-seat connected to the screw is provided on the bearing seat; a sliding hole and a threaded hole connected to the sliding hole are provided on the bearing seat, and a sliding seat is slidably connected in the sliding hole; a first slope surface and a second slope surface are provided on the sliding seat, and a stop portion is left between the first slope surface and the second slope surface; a guide rod is provided on the socket assembly, the guide rod is slidably adapted to the sliding tube, a first tooth groove is provided on the convex ridge of the guide rod, and the first tooth groove and the stop portion can form a locking structure; the present application sets a notch so that a special wrench must be used to screw the screw, and such a locking form is safer and more reliable, avoiding the problem of stealing and pulling out the plug assembly.

Description

Technical Field

[0001] The present invention belongs to conductive connection, relates to the technical field of new energy vehicle charging plug and socket combination, and particularly to a vehicle charging pile plug and socket assembly. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as a power source, integrate advanced technologies in vehicle power control and drive, and have advanced technical principles, new technologies, and new structures. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, hydrogen engine vehicles, and other new energy vehicles. Most of the current new energy vehicles are pure electric. Pure electric vehicles are vehicles that use a single battery as a power source for energy storage. They use batteries as a power source for energy storage, and provide electricity to the motor through the battery to drive the motor to run, thereby driving the vehicle. Therefore, sockets are essential for the charging process of pure electric vehicles, and the vehicle needs to be charged regularly.

[0003] A Chinese patent with application number 202410479008.4 discloses a new energy vehicle charging gun, including a gun handle and a gun nozzle. The interior of the gun handle is provided with a high-voltage connecting wire, a grounding connecting wire, a low-voltage connecting wire, a control module and a micro switch, and a handle is installed on the outside of the gun handle; the gun nozzle is installed on the gun handle, and the gun nozzle is recessed inward to form a connecting cavity. The interior of the connecting cavity is provided with a plurality of charging connecting tubes, and a positioning rim is installed under the gun nozzle, and a high-voltage terminal, a control terminal and a grounding terminal are installed on the positioning rim. The high-voltage terminal, the control terminal and the grounding terminal respectively have a first connecting end, a second connecting end and a spacer. The first connecting end extends into the charging connecting tube, and the spacer is located between the positioning rim and the charging connecting tube. The second connecting end is correspondingly connected to the high-voltage connecting wire, the grounding connecting wire and the low-voltage connecting wire.

[0004] The charging plug is locked only by a lock tongue of smaller specifications. For a charging plug whose entire structure is made of plastic material, the single lock tongue locking form can easily cause the charging plug to be stolen in some outdoor environments. Summary of the invention

[0005] The object of the present invention is to provide a plug and socket assembly for a car charging pile, so as to solve the problem that the single locking tongue locking form proposed in the above-mentioned background technology is easy to be stolen and pulled out.

[0006] The technical solution adopted by the present invention is as follows: a plug and socket assembly for automobile charging pile, comprising a plug assembly and a socket assembly, wherein a movable plug-in is provided on the plug assembly, and the movable plug-in includes a plug plate, which is connected to the plug assembly, and a foot seat is provided on the top surface of the plug plate, wherein the number of the foot seats is 2, and a slide tube is connected to the foot seat, and the 2 slide tubes are connected together through a connecting plate, and a limit plate is provided on the connecting plate facing away from the socket assembly; a screw rod is rotatably connected to the top surface of the limit plate, and a notch is provided at the upper end of the screw rod, and the shape of the notch is a convex letter shape; a guide rail is provided on the limit plate; a bearing seat is slidably connected to the guide rail, and the shape of the bearing seat is an I-shaped, and a slide groove is provided on one side flange of the bearing seat, and the slide groove is slidably adapted to the guide rail so that the bearing seat slides in the up and down directions; the web of the bearing seat A movable seat is provided on it, and the movable seat is threadedly connected to the screw rod; a sliding hole and a threaded hole connected to the sliding hole are provided on the flange on the other side of the bearing seat, and a sliding seat is slidably connected in the sliding hole, and the cross-sectional shape of the sliding seat is T-shaped; a first spring is provided on the small diameter section of the sliding seat, and a positioning bolt is connected to the free end of the first spring, and the positioning bolt is connected to the threaded hole; a first slope surface and a second slope surface are provided on the large diameter end of the sliding seat, and a stop portion is left between the first slope surface and the second slope surface, and the inclination directions of the first slope surface and the second slope surface are opposite; a guide rod is provided on the socket assembly, and the guide rod is slidably adapted to the sliding tube, and a notch groove is provided on the side of the guide rod, so that a convex ridge is formed on the side wall of the guide rod, and a first tooth groove is provided on the convex ridge, and the first tooth groove and the stop portion can form a locking structure.

[0007] The top surface of the limit plate is connected to the casing by a long bolt; a main control board is provided on the top surface of the casing; a carrier board is provided inside the casing; a battery, an IC card intelligent power switch, a motor, a reduction gear set, and a drive head are provided on the carrier board, and the IC card intelligent power switch is electrically connected to the main control board; the battery is connected to the IC card intelligent power switch through wires, the IC card intelligent power switch is connected to the motor through wires, the motor is connected to the reduction gear set, the reduction gear set is connected to the drive head, and the drive head is adapted to the upper end of the screw.

[0008] A base is provided on the top surface of the limiting plate, a first chamber is provided on the base, a driving rod is provided in the first chamber, and the driving rod is adapted to the upper end of the screw rod; a positioning groove is provided on the side wall of the driving rod; a handle is provided on the upper end of the driving rod; a second chamber is provided on the base; a lock pin hole communicating with the first chamber is provided on the second chamber; a lock core is provided in the second chamber, and a lock pin of the lock core is used to be inserted into the positioning groove to lock the position of the driving rod.

[0009] The beneficial effect of the present invention is that: by setting the notch, the present application requires the use of a special wrench to screw the screw, such a locking form is safer and more reliable, avoiding the problem of stealing and pulling out the plug assembly, and when the first slope surface is opposite to the first tooth groove, it is convenient for the plug assembly to enter, and when the second slope surface is opposite to the first tooth groove, it is convenient for the plug assembly to be detached. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the main structure of this application.

[0011] Figure 2 It is a schematic diagram of the three-dimensional structure of the dynamic plug-in.

[0012] Figure 3 It is a schematic diagram of the three-dimensional structure of the sliding pipe.

[0013] Figure 4 It is a schematic diagram of the three-dimensional structure of the limiting plate.

[0014] Figure 5 It is a schematic diagram of the three-dimensional structure of the bearing seat.

[0015] Figure 6 It is a schematic diagram of the three-dimensional structure of the slide.

[0016] Figure 7 It is a schematic diagram of the three-dimensional structure of the guide rod.

[0017] Figure 8 It is a schematic diagram of the top view of the structure of the slide tube and the guide rod.

[0018] Fig. 9 It is a schematic diagram of the main cross-sectional structure of the plug assembly.

[0019] Fig.10 It is a schematic diagram of the three-dimensional structure of the low-voltage connecting line.

[0020] Fig.11 It is a schematic diagram of the three-dimensional structure of the low-voltage terminal.

[0021] Fig.12 It is a schematic diagram of the three-dimensional structure in which the low-voltage connecting wire is connected to the low-voltage terminal.

[0022] Fig.13 It is a schematic diagram of the three-dimensional structure of the socket assembly.

[0023] Fig.14 It is a schematic diagram of the three-dimensional structure of the extrusion plate and the push plate.

[0024] Fig.15 It is a schematic diagram of the main cross-sectional structure of the extruded plate.

[0025] Fig.16 Schematic diagram of the three-dimensional structure of the guide column.

[0026] Fig.17 It is a schematic diagram of the three-dimensional structure of the adjusting wheel.

[0027] Fig.18 It is a schematic diagram of the main cross-sectional structure of the casing.

[0028] Fig.19 It is a schematic diagram of the three-dimensional structure of the reduction gear group.

[0029] Fig. 20 A schematic diagram of the three-dimensional structure of the base.

[0030] Fig.21 It is a schematic diagram of the side cross-sectional structure of the driving rod.

[0031] In the figure: 1. plug assembly; 2. socket assembly; 3. moving plug-in; 4. plug-in board; 5. foot seat; 6. slide tube; 7. connecting plate; 8. limit plate; 9. screw; 10. notch; 11. guide rail; 12. bearing seat; 13. slide groove; 14. moving seat; 15. slide hole; 16. threaded hole; 17. slide seat; 18. first spring; 19. positioning bolt; 20. first slope surface; 21. second slope surface; 22. stopper; 23. guide rod; 24. notch groove; 25. convex ridge; 26. first tooth groove; 27. gun handle; 28. gun nozzle; 29. ​​charging line; 30. high voltage connecting line; 31. grounding connecting line; 32. low voltage connecting line; 33. limit groove; 34. cut surface; 35. sliding gap; 36. countersunk hole; 37. high voltage terminal; 38. grounding terminal; 39. Low voltage terminal; 40, connecting plate; 41, guide sleeve; 42, groove; 43, connecting cavity; 44, charging connecting tube; 45, guide groove; 46, spring seat; 47, second spring; 48, extrusion plate; 49, serrated groove; 50, first wedge surface; 51, third spring; 52, push plate; 53, second wedge surface; 54, slide plate; 55, slot; 56, guide column; 57, second tooth groove; 58, through groove; 59, adjusting wheel; 60, long bolt; 61, housing; 62, main control board; 63, carrier board; 64, battery; 65, IC card intelligent power switch; 66, motor; 67, reduction gear set; 68, drive head; 69, base; 70, first chamber; 71, drive rod; 72, positioning groove; 73, handle; 74, second chamber; 75, lock pin hole; 76, lock core. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] In the description of the present invention, it is necessary to understand that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] like Figure 1 to Figure 8As shown, in the first embodiment, a plug and socket assembly of a car charging pile includes a plug assembly 1 and a socket assembly 2, a movable plug-in 3 is connected to the plug assembly 1, and the movable plug-in 3 includes a plug-in board 4, which is connected to the plug assembly 1, and the plug-in board 4 is a plate-like structure. Specifically, the shape of the plug-in board 4 in this embodiment is set to be L-shaped; a foot seat 5 is fixed to the top surface of the plug-in board 4 by screws, and the foot seat 5 is located on the side close to the socket assembly 2. The number of the foot seats 5 is 2, and the 2 foot seats 5 are symmetrically arranged. In this embodiment, the foot seat 5 is L-shaped, and a slide tube 6 is connected to the foot seat 5. The 2 slide tubes 6 are connected together by a connecting plate 7. The number of connecting plates 7 in this embodiment is set to 2. , preferably, the end faces of the two connecting plates 7 are flush with the ports of the sliding tube 6; a limit plate 8 is installed on the connecting plate 7 away from the socket assembly 2, the number of the limit plates 8 is 2, and the two limit plates 8 are symmetrically arranged; the top surface of the limit plate 8 is rotatably connected with a screw 9, the upper end of the screw 9 protrudes outside the limit plate 8, and the upper end of the screw 9 is provided with a notch 10, and the notch 10 needs to be rotated with a special wrench. In this embodiment, the shape of the notch 10 is a convex shape, or the notch 10 can be set to a triangle or other special shapes; a guide rail 11 is installed in the gap between the two limit plates 8, the cross-sectional shape of the guide rail 11 is T-shaped, the number of the guide rails 11 is 2, and the two guide rails 1 1 is symmetrically arranged; a bearing seat 12 is slidably connected to the guide rail 11, and the shape of the bearing seat 12 is an I-shaped, and a vertically arranged slide groove 13 is provided on one side flange of the bearing seat 12, and the slide groove 13 is slidably adapted to the guide rail 11, so that the bearing seat 12 slides in the up and down direction; a mover seat 14 is connected to the web of the bearing seat 12, and the mover seat 14 is threadedly connected to the screw rod 9; a slide hole 15 and a threaded hole 16 connected to the slide hole 15 are provided on the other side flange of the bearing seat 12, and the shape of the slide hole 15 is rectangular, and a slide seat 17 is slidably connected in the slide hole 15, and the cross-sectional shape of the slide seat 17 is T-shaped, and the small diameter section of the slide seat 17 is located in the slide hole 15 The small diameter section of the slide 17 is connected to a first spring 18, and the free end of the first spring 18 is connected to a positioning bolt 19, which is connected to the threaded hole 16; the large diameter end of the slide 17 is provided with a first slope surface 20 and a second slope surface 21, and a stopper 22 is left between the first slope surface 20 and the second slope surface 21. The first slope surface 20 and the second slope surface 21 have opposite inclination directions, and the first slope surface 20 and the second slope surface 21 both have a guiding function. The first slope surface 20 is used for guiding the plug assembly 1 when entering the socket assembly 2, and the second slope surface 21 is used for guiding the plug assembly 1 when leaving the socket assembly 2;The socket assembly 2 is connected with a guide rod 23 by bolts. The guide rod 23 is slidably adapted to the slide tube 6. The guide rod 23 is a T-shaped rotating member. There are two guide rods 23, which are symmetrically arranged. A notch groove 24 is provided on the side of the guide rod 23. There are two notch grooves 24, which are symmetrically arranged. The arc length of the notch groove 24 is less than one-quarter of the semicircular arc surface of the guide rod 23 to ensure the guiding effect of the guide rod 23. The setting of the notch groove 24 forms a convex ridge 25 on the side wall of the guide rod 23. The convex ridges 25 on the two guide rods 23 are located opposite to each other, and a first tooth groove 26 is provided on the convex ridge 25. The first tooth groove 26 and the stopper 22 can form a locking structure. The present application sets a notch 10, so that a special wrench must be used to screw the screw 9. This locking form is safer and more reliable, avoiding the problem of stealing and pulling out the plug assembly 1. Moreover, when the first slope surface 20 is opposite to the first tooth groove 26, it is convenient for the plug assembly 1 to enter, and when the second slope surface 21 is opposite to the first tooth groove 26, it is convenient for the plug assembly 1 to leave. ;

[0037] like Figure 9~Figure 12 As shown, as an optimization of the first embodiment, the plug assembly 1 includes a gun handle 27 and a gun nozzle 28. The interior of the gun handle 27 is a cavity structure. The tail end of the gun handle 27 is connected to a charging line 29. The head end of the charging line 29 is located in the gun handle 27. The head end of the charging line 29 is divided into a high-voltage connection line 30, a ground connection line 31, and a low-voltage connection line 32; the gun handle 27 is made of PE material for secondary injection molding to meet the requirements of anti-fall, waterproof, rolling, and tensile resistance. This material uses flame-retardant and high-pressure resistant plastic, which makes the hand-holding feel comfortable and the use safety is particularly high; the head end of the gun handle 27 is used to install the dynamic plug-in 3, and the preferred dynamic plug-in 3 is located at the top of the gun handle 27; the gun nozzle 28 is fixed to the gun handle 27 by screws, and the shape of the gun nozzle 28 is a circle with a portion cut off; the large diameter section of the gun nozzle 28 is provided with a limiting groove 33, and the limiting groove 33 is used to wedge into the plug-in plate 4; The small diameter section of the nozzle 28 is provided with a horizontal section 34, and a sliding gap 35 is formed between the top surface of the section 34 and the bottom surface of the plug board 4; the preferred length of the small diameter section of the gun nozzle 28 is greater than the length of the plug board 4, ensuring that the small diameter section of the gun nozzle 28 can be fully inserted into the socket assembly 2; the small diameter section of the gun nozzle 28 is provided with a plurality of countersunk holes 36, and the number of the countersunk holes 36 in this embodiment is 7, and a high-voltage terminal 37, a grounding terminal 38, and a low-voltage terminal 39 are installed in the countersunk holes 36; one end of the high-voltage terminal 37 is connected to the high-voltage connecting line 30, and the other end of the high-voltage terminal 37 is recessed in the gun nozzle 28, one end of the grounding terminal 38 is connected to the grounding connecting line 31, and the other end of the grounding terminal 38 is recessed in the gun nozzle 28, one end of the low-voltage terminal 39 is connected to the low-voltage connecting line 32, and the other end of the low-voltage terminal 39 is recessed in the gun nozzle 28.

[0038] like Fig.13As shown, as an optimization of the first embodiment, the socket assembly 2 includes a connecting plate 40, which is used to be fixed on a new energy vehicle; a guide sleeve 41 is provided on the connecting plate 40, and a groove 42 is provided on the outer wall of the guide sleeve 41. Preferably, the groove 42 is located at the top of the guide sleeve 41, and the groove 42 is slidably adapted to the plug plate 4 of the plug assembly 1; a guide rod 23 is installed on the end face of the connecting plate 40, and the guide rod 23 is located above the groove 42; the guide sleeve 41 is recessed inwardly to form a connecting cavity 43, and a plurality of charging connecting tubes 44 are provided inside the connecting cavity 43. In this embodiment, the number of charging connecting tubes 44 is 7, and the positions of the charging connecting tubes 44 and the countersunk holes 36 correspond one by one, and the charging connecting tubes 44 are slidably adapted to the countersunk holes 36. The charging connecting tubes 44 are used to connect the high-voltage terminal 37, the grounding terminal 38, and the low-voltage terminal 39, and the charging connecting tubes 44 are recessed in the guide sleeve 41.

[0039] like Fig.14 and Fig.15As shown, as an optimization of the first embodiment, considering that the deadweight of the plug assembly 1 is relatively large, the force on the plug assembly 1 during charging is concentrated on the lower side of the guide sleeve 41, and there is a problem of uneven force. A guide groove 45 is provided at the small diameter section of the gun nozzle 28, and the cross-sectional shape of the guide groove 45 is T-shaped. The guide groove 45 passes through the surface of the gun nozzle 28 opposite to the connecting plate 40, and the guide groove 45 passes through the surface of the gun nozzle 28 sliding with the guide sleeve 41; the number of guide grooves 45 in this embodiment is 5, and the 5 guide grooves 45 are distributed at the intervals of adjacent countersunk holes 36; a spring seat 46 is fixed in the guide groove 45 by screws, and the shape of the spring seat 46 is L-shaped, The horizontal section of the spring seat 46 is connected to the second spring 47. The second spring 47 can be a tension spring. The number of the second springs 47 is at least 2. The free end of the second spring 47 is connected to an extrusion plate 48. The cross-sectional shape of the extrusion plate 48 is T-shaped. The extrusion plate 48 is slidably adapted to the guide groove 45. The outer side surface of the extrusion plate 48 is parallel to the outer side surface of the gun nozzle 28. The second spring 47 makes the outer side surface of the extrusion plate 48 in the normal state be in the guide groove 45, which facilitates the insertion of the gun nozzle 28 into the guide sleeve 41. The outer side surface of the extrusion plate 48 is provided with serrated grooves 49 arranged at equal intervals. The serrated grooves 49 and the inner side surface of the guide sleeve 41 are parallel to each other. The inner side surface of the extrusion plate 48 is provided with a first wedge surface 50, which gradually tilts downward from left to right; a movable gap is left between the first wedge surface 50 and the vertical section of the spring seat 46; the vertical section of the spring seat 46 is connected with a third spring 51, the number of the third springs 51 is at least 2, and the free end of the third spring 51 is connected with a push plate 52, which is located in the small diameter section of the guide groove 45, and the inner side surface of the push plate 52 is against the guide groove 45 and slides along the guide groove 45, and the third spring 51 makes the right end of the push plate 52 protrude outside the gun nozzle 28 in a normal state, and the push plate 52 A second wedge surface 53 is provided on the outer side surface, and the second wedge surface 53 gradually tilts downward from left to right, and the second wedge surface 53 slides against the first wedge surface 50; a movable gap is left between the push plate 52 and the vertical section of the spring seat 46; when the gun nozzle 28 is inserted into the guide sleeve 41, the push plate 52 abuts against the connecting plate 40, and as the gun nozzle 28 continues to penetrate, the push plate 52 drives the five extrusion plates 48 to expand outward at the same time until the serrated groove 49 is pressed against the inner wall of the guide sleeve 41, so that the gun nozzle 28 and the guide sleeve 41 are evenly stressed, thereby improving the service life of the socket assembly 2, and the gun nozzle 28 has an anti-falling effect.

[0040] like Fig.16As shown, as an optimization of the first embodiment, considering that a high degree of alignment is required for the insertion of the slide tube 6 into the guide rod 23, in order to reduce the difficulty of inserting the slide tube 6, a slide plate 54 is connected to the side of the gun handle 27, and the number of the slide plates 54 is 3, of which two slide plates 54 are located on the side of the gun handle 27, and the other is located on the bottom of the gun handle 27. A slot 55 is provided on the bottom surface of the slide plate 54, and the shape of the slot 55 is an inverted U shape; a guide column 56 is fixed to the end surface of the connecting plate 40 by bolts, and the number of the guide columns 56 is 3, and the three guide columns 56 are located in the circumferential direction of the guide sleeve 41. The side wall of the guide column 56 is slidably connected to the slot 55 of the slide plate 54, which plays a role of pre-positioning. First, the gun handle 27 is placed on the guide column 56, and then the gun handle 27 is pushed toward the socket direction, so that the slide tube 6 can be accurately inserted into the guide rod 23.

[0041] like Fig.17 As shown, as an optimization of the first embodiment, a second tooth groove 57 is provided on the lateral guide column 56; a through groove 58 is provided on the side wall of the slide plate 54, and an adjusting wheel 59 is rotatably connected in the through groove 58, and the adjusting wheel 59 is engaged with the second tooth groove 57. By rotating the adjusting wheel 59, the insertion depth of the plug assembly 1 can be increased, so that the extrusion plate 48 and the guide sleeve 41 are fully pressed.

[0042] like Fig.18 and Fig.19 As shown, in the second embodiment, the difference from the first embodiment is that the top surface of the limit plate 8 is connected to the housing 61 by a long bolt 60; the main control board 62 is installed on the top surface of the housing 61; a carrier board 63 is installed in the housing 61; a battery 64, an IC card intelligent power switch 65, a motor 66, a reduction gear set 67, and a drive head 68 are installed on the carrier board 63, and the IC card intelligent power switch 65 is electrically connected to the main control board 62; the battery 64 is connected to the IC card intelligent power switch 65 by wires, and the IC card intelligent power switch 65 is connected to the electric Machine 66, the motor 66 is connected with a reduction gear set 67, the reduction gear set 67 is connected with a drive head 68, the drive head 68 is adapted to the upper end of the screw 9, the switching process: send a command to the main control board 62, the battery 64 transmits power to the IC card intelligent power switch 65, the IC card intelligent power switch 65 controls the motor 66 to rotate, drives the reduction gear set 67 to rotate, the reduction gear set 67 drives the screw 9 to rotate, wherein the IC card intelligent power switch 65 can control the motor 66 to rotate a fixed number of circles, control the rising position of the bearing seat 12, and then realize the switch adjustment of the dynamic plug-in 3.

[0043] like Fig. 20 and Fig.21As shown, in the third embodiment, the difference from the first embodiment is that the top surface of the limit plate 8 is fixedly connected to a base 69, and a first chamber 70 is provided on the base 69. A driving rod 71 is installed in the first chamber 70, and the driving rod 71 is adapted to the upper end of the screw 9; a positioning groove 72 is provided on the side wall of the driving rod 71; a handle 73 is installed on the upper end of the driving rod 71; a second chamber 74 is provided on the base 69; a locking pin hole 75 communicating with the first chamber 70 is provided on the second chamber 74 ; A lock core 76 is installed in the second chamber 74, and the lock pin of the lock core 76 is used to insert into the positioning groove 72 to lock the position of the driving rod 71; switching process: when the stop portion 22 is opposite to the first tooth groove 26, it is in a closed state, and the positioning groove 72 on the driving rod 71 is opposite to the lock pin hole 75. Use a key to insert the lock pin of the lock core 76 into the positioning groove 72 to achieve locking. At the same time, the lock core 76 is also fixed in the second chamber 74. If you need to open the lock core 76, use a special key.

[0044] Although the present invention has been described in detail with reference to the aforementioned examples, it is still possible for those skilled in the art to make and modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plug and socket assembly for a car charging pile, comprising a plug assembly (1) and a socket assembly (2), characterized in that: A movable plug-in (3) is provided on the plug assembly (1), the movable plug-in (3) comprises a plug plate (4), a foot seat (5) is provided on the top surface of the plug plate (4), the number of the foot seats (5) is two, a slide tube (6) is provided on the foot seat (5), the two slide tubes (6) are connected together by a connecting plate (7), and a limit plate (8) is provided on the connecting plate (7); a screw rod (9) is rotatably connected to the top surface of the limit plate (8), and a notch (10) is provided at the upper end of the screw rod (9); a guide rail (11) is provided on the limit plate (8); a bearing seat (12) is slidably connected to the guide rail (11), and the shape of the bearing seat (12) is an I-shaped; a movable sub-seat (14) is provided on the belly plate of the bearing seat (12), The mover seat (14) is threadedly connected to the screw rod (9); a sliding hole (15) and a threaded hole (16) connected to the sliding hole (15) are provided on the flange of the other side of the bearing seat (12); a sliding seat (17) is slidably connected in the sliding hole (15); the cross-sectional shape of the sliding seat (17) is T-shaped; a first spring (18) is provided at a small diameter section of the sliding seat (17); a positioning bolt (19) is provided at a free end of the first spring (18); the positioning bolt (19) is connected to the threaded hole (16); a first slope surface (20) and a second slope surface (21) are provided at a large diameter end of the sliding seat (17); a stopper (22) is left between the first slope surface (20) and the second slope surface (21). ), the first slope surface (20) and the second slope surface (21) are inclined in opposite directions; a guide rod (23) is provided on the socket assembly (2), the guide rod (23) is slidably matched with the slide tube (6), a notch groove (24) is provided on the side of the guide rod (23), so that a convex ridge (25) is formed on the side wall of the guide rod (23), a first tooth groove (26) is provided on the convex ridge (25), and the first tooth groove (26) and the stopper (22) can form a locking structure; the plug assembly (1) includes a gun handle (27) and a gun mouth (28), a small diameter section of the gun mouth (28) is provided with a plurality of guide grooves (45), and the guide grooves (45) penetrate the gun mouth (28) opposite to the connecting plate (40) The guide groove (45) penetrates the surface of the gun nozzle (28) and the sliding surface of the guide sleeve (41); a spring seat (46) is provided in the guide groove (45); a second spring (47) is provided in the horizontal section of the spring seat (46); a pressing plate (48) is provided at the free end of the second spring (47); the pressing plate (48) and the guide groove (45) are slidably matched; the second spring (47) makes the outer side surface of the pressing plate (48) in a normal state be located in the guide groove (45); a sawtooth groove (49) is provided on the outer side surface of the pressing plate (48); a first wedge surface (50) is provided on the inner side surface of the pressing plate (48); a movable gap is left between the first wedge surface (50) and the vertical section of the spring seat (46);A third spring (51) is provided on the vertical section of the spring seat (46), and a push plate (52) is provided on the free end of the third spring (51). The inner side surface of the push plate (52) abuts against the guide groove (45) and slides along the guide groove (45). The third spring (51) makes the right end of the push plate (52) protrude outside the gun nozzle (28) in a normal state. A second wedge surface (53) is provided on the outer side surface of the push plate (52), and the second wedge surface (53) slides against the first wedge surface (50); a movable gap is left between the push plate (52) and the vertical section of the spring seat (46). ; 2. The plug and socket assembly for a car charging pile according to claim 1, characterized in that: The number of the notched grooves (24) is two, the two notched grooves (24) are symmetrically arranged, and the arc length of the notched grooves (24) is less than a quarter of the semicircular arc surface of the guide rod (23).

3. The automobile charging pile plug and socket assembly according to claim 1, characterized in that: The interior of the gun handle (27) is a hollow structure. A charging line (29) is provided at the rear end of the gun handle (27). The head end of the charging line (29) is divided into a high-voltage connection line (30), a ground connection line (31), and a low-voltage connection line (32). The head end of the gun handle (27) is used to install a movable plug-in (3), and the movable plug-in (3) is located at the top of the gun handle (27). A gun mouth (28) is provided on the gun handle (27). The gun mouth (28) is shaped like a circle with a portion cut off. A horizontal section is provided at a small diameter section of the gun mouth (28). (34), the top surface of the cut surface (34) and the bottom surface of the plug plate (4) have a sliding gap (35); the small diameter section of the gun nozzle (28) is provided with a plurality of countersunk holes (36), and the countersunk holes (36) are provided with high-voltage terminals (37), ground terminals (38), and low-voltage terminals (39); one end of the high-voltage terminal (37) is connected to the high-voltage connecting wire (30), one end of the ground terminal (38) is connected to the ground connecting wire (31), and one end of the low-voltage terminal (39) is connected to the low-voltage connecting wire (32).

4. The plug and socket assembly for a car charging pile according to claim 3, characterized in that: The length of the small diameter section of the gun nozzle (28) is greater than the length of the insert plate (4).

5. The plug and socket assembly for a car charging pile according to claim 3, characterized in that: The other end of the high-voltage terminal (37) is recessed in the gun nozzle (28), the other end of the ground terminal (38) is recessed in the gun nozzle (28), and the other end of the low-voltage terminal (39) is recessed in the gun nozzle (28).

6. The automobile charging pile plug and socket assembly according to claim 1, characterized in that: The socket assembly (2) comprises a connecting plate (40), the connecting plate (40) having a guide sleeve (41), the outer wall of the guide sleeve (41) being provided with a groove (42), the groove (42) being slidably matched with the plug plate (4) of the plug assembly (1); the end surface of the connecting plate (40) being provided with a guide rod (23); the guide sleeve (41) being recessed inwardly to form a connecting cavity (43), the interior of the connecting cavity (43) being provided with a plurality of charging connecting tubes (44), the charging connecting tubes (44) being slidably matched with the countersunk holes (36), and the charging connecting tubes (44) being used for connecting with the high-voltage terminal (37), the grounding terminal (38), and the low-voltage terminal (39).

7. The plug and socket assembly for a car charging pile according to claim 6, characterized in that: The charging connection tube (44) is recessed in the guide sleeve (41).

8. The automobile charging pile plug and socket assembly according to claim 3, characterized in that: A slide plate (54) is provided on the side of the gun handle (27), and the number of the slide plates (54) is three, of which two slide plates (54) are located on the side of the gun handle (27), and the other is located below the gun handle (27). A slot (55) is provided on the bottom surface of the slide plate (54); a guide column (56) is provided on the end surface of the connecting plate (40), and the side wall of the guide column (56) is slidably connected to the slot (55) of the slide plate (54).

9. The automobile charging pile plug and socket assembly according to claim 8, characterized in that: A second tooth groove (57) is formed on the lateral guide column (56); a through groove (58) is formed on the side wall of the slide plate (54); an adjusting wheel (59) is rotatably connected in the through groove (58); the adjusting wheel (59) is meshed with the second tooth groove (57).

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