AC charging connector

Abstract

The invention relates to the technical field of electrical equipment, in particular to an alternating current charging connector which comprises a shell, a charging port, a charging terminal, a hinge, a bottom ring, a boss and teeth, the charging port is formed in the shell, the charging terminal is arranged in the charging port, a closing assembly, a cleaning assembly and the hinge are arranged in the shell, and the bottom ring is coaxially arranged on the inner wall of the charging port. The charging terminal is located in the bottom ring, a plurality of bosses are annularly and evenly distributed on the end face of the bottom ring, hinges are rotationally installed on the bosses, the adjacent hinges are attached to each other, the multiple hinges are combined to form a closed plane, teeth are arranged at one ends of the hinges, the closing assembly is meshed with the teeth, and the closing assembly is used for driving the hinges to be opened through pressure generated when the charging port is in butt joint with equipment. According to the charging terminal, the hinges are opened and closed by using the downward pressure during charging, so that the problem that the charging efficiency is blocked due to the fact that dust and dirt fall to the charging terminal is solved, and the safety and the charging efficiency of equipment are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and in particular to an AC charging connector. Background Art

[0002] With the increasing awareness of environmental protection and the restrictions on exhaust emissions from traditional fuel vehicles, electric vehicles have developed rapidly as a clean and efficient means of transportation. Electric vehicles need reliable charging facilities to meet their daily use needs. The AC charging connector, as a key component connecting electric vehicles and charging equipment, is becoming increasingly important. However, in the humid environment of rainy days, rain will fall onto the charging connector during use. The humid environment will also make the charging connector damp, resulting in leakage or short circuit during charging operations, posing a safety hazard.

[0003] In view of the above problems, the prior art provides some solutions. For example, the utility model with application number CN201721189431.2 provides a safe charging pile. The utility model includes a charging pile body and a charging gun. A cable is arranged between the charging pile body and the charging gun. The charging gun includes a gun body and a pin. An insulating jacket is fixedly arranged on the outside of the gun body. An inner chamber is arranged between the insulating jacket and the gun body. A plurality of exhaust holes are arranged on the head of the insulating jacket. An electric heating plate is also arranged in the inner chamber. A blower is arranged on the outside of the charging pile body. A plurality of hoses are arranged between the blower and the insulating jacket. An elastic sleeve is arranged on the edge of the head of the insulating jacket. An elastic ring is fixedly arranged on the head of the elastic sleeve. The safe charging pile is It can cool the charging gun during the charging process with air, thereby eliminating the safety hazards caused by the increase in temperature during charging. It can also dry the damp charging gun with high drying efficiency and fast drying rate, thereby preventing the damp charging gun from leaking or short circuiting during charging, thereby improving safety. However, during use, dust and dirt in the air will fall onto the charging gun during the rain. After the charging gun is dried, the remaining dust and dirt will adhere to the pins on the charging gun after the water evaporates. The obstruction of dust and dirt will cause poor contact, which will make the current transmission unstable and affect the charging efficiency. At the same time, dust and dirt particles will damage the metal contacts of the interface, increasing the resistance and thus reducing the charging power. Summary of the invention

[0004] The purpose of the present invention is to provide an AC charging connector to solve the problem that in a humid environment on rainy days, dust and dirt in the air will fall onto the charging connector during the falling rain, causing safety hazards and hindered charging efficiency during charging operations.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An AC charging connector includes a shell, a charging port, a charging terminal, a locking device, a hinge, a bottom ring, a boss and teeth. The shell is provided with a charging port, the charging terminal is provided in the charging port, and the shell is provided with a locking device for docking and fixing with the charging interface.

[0007] Specifically, a closing component, a cleaning component and a hinge are provided in the shell, a bottom ring is coaxially provided on the inner wall of the charging port, the charging terminal is located in the bottom ring, a plurality of bosses are evenly distributed in an annular manner on the end surface of the bottom ring, a hinge is rotatably mounted on the boss, adjacent hinges are fitted together, a plurality of hinges are combined into a closed plane, teeth are provided at one end of the hinge, the closing component is installed in the charging port, the closing component is connected to the teeth, the closing component is used to drive the hinge to open by pressure when the charging port is docked with the device, and the cleaning component is used to clean dust and dirt on the surface during the hinge opening process.

[0008] It is easy to understand that when you want to charge the device, hold the shell in your hand, align the charging port with the corresponding charging interface on the device and insert it. The locking device locks the charging port and the device. At this time, the charging terminals in the charging port contact the charging terminals in the charging interface on the device, the circuit is connected, and current passes to charge the device.

[0009] Furthermore, in the humid environment of rainy days, dust and dirt in the air will fall onto the charging terminal during the falling rain, and the charging efficiency will be hindered during the charging operation. Therefore, when the charging port is aligned with the charging interface on the device and inserted, the charging port applies pressure to the charging interface, and the applied pressure is used to drive the adjacent hinges to separate through the closing component, and the hinges are changed from a closed state to an open state. At the same time, the cleaning component cleans the dust and dirt on the hinges during the opening process. When charging is completed, the charging port is unplugged from the charging interface, and the closing component resets and pushes the hinges to re-fit, and the hinges are changed from an open state to a closed state. The contact between the charging terminal and dust and dirt is isolated by the closing of the hinges. At the same time, the dust and dirt on the hinges are cleaned when the hinges are opened to prevent dust and dirt from contacting the charging terminal. The charging efficiency is hindered during the charging operation, thereby ensuring the safety of the equipment and the charging efficiency.

[0010] Preferably, the closing component includes a turntable, a torsion spring, a gear ring and an arc-shaped ramp. The turntable is coaxially installed in the charging port, the turntable and the charging port are connected by a torsion spring, a through hole is provided in the center of the turntable, a gear ring is provided on the inner wall of the base, the gear ring is meshed with the teeth, an arc-shaped ramp is symmetrically provided on the end surface of the turntable, a No. 1 inclined surface is provided on the arc-shaped ramp, and the No. 1 inclined surface is arranged clockwise from the low end to the high end, the hinge is fitted with the turntable through an interlaced component, and the hinges are combined into a closed plane covering the through hole.

[0011] When charging is to be performed, the hinge in the closed state will prevent the charging terminals in the charging port from docking with the charging terminals in the charging interface of the device. Therefore, a turntable is rotatably installed on the charging port, and an arc-shaped ramp with a No. 1 inclined surface is symmetrically designed on the turntable. The toothed ring on the inner wall of the turntable engages with the hinge, and an inclined surface matching the No. 1 inclined surface is opened in the charging interface of the device. When the charging port is aligned with the corresponding charging interface on the device and inserted, the arc-shaped ramp set on the turntable cooperates with the inclined surface opened in the charging interface of the device through the No. 1 inclined surface. When the charging port is inserted into the charging interface, the downward pressure is converted into a rotational motion of the turntable through the action of the No. 1 inclined surface and the corresponding inclined surface opened on the device. When the turntable rotates When the turntable reaches the set position, the turntable stops rotating, and the charging terminals in the charging interface on the device are connected with the charging terminals in the electric port through the through holes. The pressure generated by the connection between the charging port and the charging interface on the device is converted into the rotational motion of the turntable, thereby driving the hinge to open from the closed state to the open state, avoiding the hinge from hindering the connection between the charging terminals in the charging port and the charging terminals in the charging interface on the device, thereby ensuring the normal operation of the device.

[0012] Furthermore, when charging is completed and the charging connector is removed, the hinge is in the open state, and dust and dirt will pass through the through hole to the charging terminal, which will hinder the charging efficiency during the next charging operation. Therefore, the turntable and the charging port are connected by a torsion spring. When changing from the closed state to the open state, the torsion spring is compressed. When the connector is removed, the No. 1 inclined surface is separated from the inclined surface opened in the charging interface of the device, and the elastic potential energy of the torsion spring is released, which pushes the turntable to reverse and drive the hinge to re-engage, and the hinge is turned from the open state to the closed state. The torsion spring is compressed by the hinge during the opening process and the elastic potential energy of the torsion spring is released when it is removed, driving the hinge from the open state to the closed state, thereby preventing dust and dirt from passing through the through hole to the charging terminal when the hinge is in the open state, which will hinder the charging efficiency during the next charging operation, thereby ensuring the safety and charging efficiency of the equipment.

[0013] Preferably, the cleaning assembly includes a top cover, a top cover is coaxially arranged in the charging port, the turntable is located between the top cover and the bottom ring, the top cover is fitted with an end face of the turntable, through grooves are symmetrically arranged on the top cover, the arc-shaped ramp is slidably installed in the through grooves, a drain ring is provided in the top cover, the drain ring is connected with the end face of the top cover, the drain ring is connected with the outer wall of the shell, and the end face of the top cover is fitted with a hinge.

[0014] During the use of the charging connector, in a rainy environment, dust and dirt in the air will fall on the hinge of the charging port during the falling rain. When the hinge is opened, the dust and dirt on the hinge will fall onto the charging terminal, which will hinder the charging efficiency during the charging operation. Therefore, a drain ring is designed in the top cover, which is connected to the end face of the top cover, the end face of the top cover is in contact with the hinge, and the drain ring is connected to the outer wall of the shell. When the charging port and the charging interface on the device are connected, the charging port and the charging interface form a closed space. When the charging port is pressed down, the pressure in the closed space increases, thereby generating pressure. The pressure difference causes the gas to flow to the drain ring connected to the end face of the top cover and be discharged out of the shell. During the downward pressure exhaust process, the hinge changes from a closed state to an open state at the same time. When the hinge passes through the drain ring on the end face of the top cover, the dust and dirt on the hinge close to the drain ring are brought into the intake ring and discharged by the pressurized gas. By utilizing the closed space formed by the charging port and the charging interface, the pressure difference generated during the downward pressure process discharges the dust and dirt out of the shell through the drain ring, preventing the dust and dirt on the hinge from falling onto the charging terminal during the opening of the hinge, which would hinder the charging efficiency during the charging operation, thereby ensuring the safety and charging efficiency of the equipment.

[0015] Preferably, a slip ring groove is coaxially provided in the bottom ring, the slip ring groove is vertically connected with the sliding hole, the sliding hole is connected with the outer wall of the shell, a pressure ring is provided in the slip ring groove, a push rod is slidably installed in the sliding hole, one end of the push rod extends out of the shell through the sliding hole, the push rod is connected to the bottom ring through a compression spring, the pressure ring is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the push rod, and when the connecting rod is parallel to the inner wall of the slip ring groove, the pressure ring fits with the hinge.

[0016] When taking the charging connector, it may be bumped and dropped. When it is bumped and dropped, vibration is generated between the hinges, resulting in a gap. At this time, dust and dirt will enter the charging port through the gap and fall onto the charging terminal. During the charging operation, there is a problem of hindered charging efficiency. Therefore, a vertically connected slip ring groove and a sliding hole are coaxially provided in the bottom ring. The sliding hole is connected to the outer wall of the shell. A pressure ring is provided in the slip ring groove. A push rod is slidably installed in the sliding hole. One end of the push rod extends out of the shell through the sliding hole. The push rod is connected to the bottom ring through a compression spring. The slip ring groove is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the push rod. When the charging port is inserted into the charging interface on the device, the outer wall of the shell fits the charging interface. During the insertion process, the push rod is pressed into the sliding hole by the charging port, and the compression spring is compressed. During the sliding process of the push rod, the connecting rod hinged to it is driven forward, and the connecting rod is pushed from the original vertical direction to tilt. The length remains unchanged, so the projection of the connecting rod in the vertical direction is shortened, and the pressure ring is driven to slide downward in the slip ring groove during the tilting of the connecting rod. At this time, the pressure ring is separated from the hinge. After charging is completed, when the charging connector is pulled out, the elastic potential energy of the compression spring is released, and the push rod is pushed out of the sliding hole. The pushing out of the push rod drives the connecting rod to reset, and the connecting rod returns to the original vertical direction. At this time, the length of the projection of the connecting rod in the vertical direction is the highest. During the resetting process of the connecting rod, the pressure ring is pushed to move upward in the slip ring groove, and the pressure ring is re-fitted with the hinge. At the same time, the hinge is clamped under the action of the top cover and the turntable. By utilizing the plug-in and unplugging action of the charging port and the charging interface, the pressure ring is triggered to release the hinge during docking and charging. When the charging connector is pulled out, the pressure block clamps the hinge to avoid gaps caused by bumps and falls, and dust and dirt fall on the charging terminal, which hinders the charging efficiency, thereby ensuring the safety and charging efficiency of the equipment.

[0017] Preferably, the staggered component includes a guide block, and a guide groove No. 1 and a guide groove No. 2 are staggered on the side wall of the boss, and the guide groove No. 1 and the guide groove No. 2 are inclined, and the inclination angle of the guide groove No. 1 is greater than that of the guide groove No. 2. A hinge hole is provided on the hinge, and a guide block is connected to the hinge hole, and the hinge hole is coaxially rotatably connected to the boss, and the guide block is slidably matched with the guide groove No. 1 and the guide groove No. 2 respectively.

[0018] During the opening and closing process of the hinge, the hinge rotates around the boss to the lower end surface of the turntable under the drive of the turntable so that the charging terminal and the charging interface can be connected. During the process, due to the thickness of the hinge itself, the side walls of adjacent hinges collide, which prevents the hinge from being retracted to the lower end surface of the turntable, thereby preventing the charging terminal from being connected to the charging interface. Therefore, guide grooves No. 1 and No. 2 are alternately arranged on the side walls of the boss, and guide grooves No. 1 and No. 2 are inclined. The inclination angle of guide groove No. 1 is greater than that of guide groove No. 2. A guide block is designed in the hinge hinge hole, and the guide block slides with guide grooves No. 1 and No. 2. When the hinge is turned from a closed state to an open state, the hinge is driven by the rotation of the turntable, and the hinge separates during the rotation. At the same time, the guide block slides from the highest point in guide grooves No. 1 and No. 2 to the lowest point. Due to the staggered arrangement of guide grooves No. 1 and No. 2 on adjacent bosses, and since the inclination angle of guide groove No. 1 is greater than that of guide groove No. 2, The descending speeds of adjacent hinges are different, and the hinge corresponding to guide groove No. 1 descends faster than that corresponding to guide groove No. 2, resulting in a position difference between adjacent hinges in the vertical direction. As the hinges continue to rotate, the hinges eventually rotate alternately to the lower end of the turntable. When the hinges change from a closed state to an open state, the hinges rotate around the boss from the staggered arrangement in the vertical direction in the closed state, and at the same time, the guide blocks slide from the lowest point of guide grooves No. 1 and No. 2 to the highest point. When reaching the highest point, the hinges re-fit, and during the process, the hinges move upward and re-fit with the guide ring. Under the action of the guide blocks and the staggered guide grooves No. 1 and No. 2 on the side walls of the boss, the hinges separate and rotate alternately to the lower end of the turntable during the hinge opening process, and re-fit during the hinge closing process, thereby avoiding collision between the side walls of adjacent hinges, hindering the hinges from retracting to the lower end surface of the turntable, and further hindering the docking of the charging terminal with the charging interface, thereby ensuring the normal operation of the equipment.

[0019] Preferably, two inclined surfaces are staggered on both sides of the hinge, the adjacent two inclined surfaces are in contact with each other, a baffle is provided on the two inclined surfaces, the baffle is made of flexible material, and the angle between the two inclined surfaces and the hinge end face is α, wherein 10°<α<30°.

[0020] When the hinges are closed, they are combined into a closed plane, and there is a vertical gap between the hinges. In a rainy environment, dust and dirt in the air will fall on the hinges of the charging port during the falling process of rain, and the fine dust and dirt in the rain will enter the charging port through the vertical gap between the hinges, and then fall on the charging terminal. During the charging operation, there is a problem of hindered charging efficiency. Therefore, No. 2 inclined surfaces are staggered on both sides of the hinge, and a baffle is provided on the No. 2 inclined surface. The baffle is made of a flexible material, and the baffle is made of rubber. A certain angle is set between the No. 2 inclined surface and the end face of the hinge. When the hinges are closed, the baffles on the adjacent No. 2 inclined surfaces are pressed together and squeezed, and the vertical gap between the hinges is changed by changing the matching surface between the hinges. At the same time, the mutual extrusion and deformation of the baffles fills the gap between the hinges, prevents dust and dirt from passing through, and prevents dust and dirt from falling on the charging terminal through the vertical gap between the hinges. During the charging operation, there is a problem of hindered charging efficiency, thereby ensuring the safety and charging efficiency of the equipment.

[0021] Preferably, the thickness of the baffle increases from the side of the hinge to the center.

[0022] When the hinge is transformed from an open state to a closed state, adjacent baffles undergo relative friction due to their flexible rubber material, and elastic deformation occurs during relative friction. The side of the baffle that first contacts is pulled in the direction of movement of the hinge, while the other side of the baffle experiences accumulation and bulging, resulting in gaps between the baffles that cannot effectively fit together and fail to block dust and dirt. Therefore, the thickness of the baffles is increased from the side of the hinge to the center. By designing the thickness of the baffles, the friction between adjacent baffles is reduced, and accumulation and bulging of the baffles are avoided, resulting in gaps between the baffles that cannot effectively fit together and fail to block dust and dirt, thereby ensuring the normal operation of the equipment.

[0023] Preferably, the drain ring includes an air nozzle section and an air cavity section, the air nozzle section is connected to the end face of the top cover, the air cavity section is connected to the outer wall of the shell, a flexible valve sheet is symmetrically arranged between the air nozzle section and the air cavity section, the valve sheet is connected to the top plate, the valve sheets are fitted to each other in a V-shape, and the fitting part of the valve sheets points to the outer wall of the shell.

[0024] When the charging port and the charging interface on the device are docked and inserted, the airflow discharges the dust and dirt on the hinge to the outside of the shell through the drain ring. However, when the charging port is unplugged from the charging interface, the charging port and the charging interface form a closed space in a negative pressure state, and the airflow outside the shell will enter the charging port through the drain ring. During the process, the hinge is not closed in time, and the dust and dirt remaining in the drain ring flows back into the charging port and falls on the charging terminal. The charging efficiency is hindered during the next charging operation. Therefore, flexible valve sheets are symmetrically provided between the air nozzle section and the air cavity section of the drain ring. The valve sheets are connected to the top plate, and the valve sheets fit each other in a V shape. The fitting part of the valve sheet points to the outer wall of the shell. When the charging port and the charging interface on the device are docked and inserted, the airflow brings the dust and dirt on the hinge to the drain ring. When it reaches the valve sheet, the valve sheet opens under the push of the fluid pressure, and the dust and dirt are discharged out of the shell with the airflow. When the charging port is unplugged from the charging interface, the airflow outside the shell passes through the drain ring to the valve sheet. Due to the reverse pressure of the gas, the valve sheet will close quickly. Through the opening and closing of the valve sheet, the airflow is prevented from carrying dust and dirt into the charging port, and the airflow is prevented from carrying dust and dirt to the charging terminal. The problem of hindered charging efficiency during the next charging operation is ensured, thereby ensuring the safety and charging efficiency of the equipment.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention uses a closing component and a hinge to convert the downward force when the charging port is docked with the charging interface on the device into the rotational movement of the turntable, thereby driving the hinge to open from a closed state to an open state. The torsion spring is compressed during the opening process, and the elastic potential energy of the torsion spring is released when the device is removed, driving the hinge from an open state to a closed state. The opening and closing of the hinge can prevent dust and dirt from passing through the through hole onto the charging terminal, thereby preventing the charging efficiency from being hindered during the charging operation, thereby ensuring the safety and charging efficiency of the device and the normal use of the device.

[0027] 2. The present invention forms a closed space between the charging port and the charging interface through the cooperation of the cleaning component and the valve plate. During the process of downward pressure, a pressure difference is generated between the closed space and the environment. The gas in the closed space discharges dust and dirt out of the shell through the drain ring. At the same time, the opening and closing of the valve plate prevents the airflow from carrying dust and dirt into the charging port, preventing dust and dirt from falling on the charging terminal. The problem of hindered charging efficiency during charging operation is avoided, thereby ensuring the safety and charging efficiency of the equipment.

[0028] 3. The present invention cooperates with a pressure ring, a push rod, a compression spring and a connecting rod, and utilizes the plug-in and unplugging action of the charging port and the charging interface to trigger the release of the hinge of the pressure ring during docking and charging, and clamps the hinge when the charging connector is pulled out to avoid gaps caused by bumps and falls, and dust and dirt falling on the charging terminal, which hinders the charging efficiency, thereby ensuring the safety and charging efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of the AC charging connector of the present invention;

[0030] Figure 2 This is a schematic diagram of the internal structure of the AC charging connector of the present invention;

[0031] Figure 3 is a cross-sectional view of a charging port of the present invention;

[0032] Figure 4 For the present invention Figure 3 A partial enlarged view of the middle A;

[0033] Figure 5 For the present invention Figure 3 A partial enlarged view of point B in the middle;

[0034] Figure 6 It is a structural schematic diagram of the charging port of the present invention;

[0035] Figure 7 It is a structural schematic diagram of the hinge of the present invention;

[0036] Figure 8 It is a cross-sectional axial view of the turntable of the present invention.

[0037] In the figure: 1. shell; 2. charging port; 21. charging terminal; 3. locking device; 4. closing assembly; 41. turntable; 411. gear ring; 412. arc-shaped ramp; 413. through hole; 414. No. 1 inclined surface; 415. through groove; 42. torsion spring; 5. cleaning assembly; 51. top cover; 52. drain ring; 521. air nozzle section; 522. air cavity section; 53. valve plate; 6. hinge; 61. teeth; 62. guide block; 63. hinge hole; 64. No. 2 inclined surface; 65. baffle; 7. bottom ring; 71. boss; 711. No. 1 guide groove; 712. No. 2 guide groove; 72. sliding ring groove; 73. sliding hole; 8. pressure ring; 81. push rod; 82. compression spring; 83. connecting rod. DETAILED DESCRIPTION

[0038] See also Figures 1 to 8 The present invention provides an AC charging connector, and the technical solution is as follows:

[0039] An AC charging connector, comprising a housing 1, a charging port 2, a charging terminal 21, a locking device 3, a hinge 6, a bottom ring 7, a boss 71 and a tooth 61. The housing 1 is provided with a charging port 2, the charging port 2 is provided with a charging terminal 21, the housing 1 is provided with a locking device 3 for docking and fixing with the charging interface, the housing 1 is provided with a closing component 4, a cleaning component 5 and a hinge 6, the inner wall of the charging port 2 is coaxially provided with a bottom ring 7, the charging terminal 21 is located in the bottom ring 7, a plurality of bosses 71 are evenly distributed on the end surface of the bottom ring 7, a hinge 6 is rotatably mounted on the boss 71, and two inclined surfaces are staggered on both sides of the hinge 6 64, adjacent No. 2 inclined surfaces 64 are fitted together, a baffle 65 is provided on the No. 2 inclined surface 64, the baffle 65 is made of flexible material, the angle between the No. 2 inclined surface 64 and the end face of the hinge 6 is α, wherein 10°<α<30°, the thickness of the baffle 65 increases from the side of the hinge 6 to the center, a plurality of hinges 6 are combined into a closed plane, a tooth 61 is provided at one end of the hinge 6, a closing component 4 is installed in the charging port 2, the closing component 4 is connected to the tooth 61, the closing component 4 is used to drive the hinge 6 to open when the charging port 2 is docked with the device, and the cleaning component 5 is used to clean the dust and dirt on the surface during the opening process of the hinge 6.

[0040] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 8 The closing component 4 includes a turntable 41, a torsion spring 42, a gear ring 411 and an arc-shaped inclined platform 412. The turntable 41 is coaxially installed in the charging port 2. The turntable 41 and the charging port 2 are connected by the torsion spring 42. A through hole 413 is provided in the center of the turntable 41. A gear ring 411 is provided on the inner wall of the base. The gear ring 411 is engaged with the tooth 61. An arc-shaped inclined platform 412 is symmetrically provided on the end surface of the turntable 41. A No. 1 inclined surface 414 is provided on the arc-shaped inclined platform 412. The No. 1 inclined surface 414 is arranged clockwise from the low end to the high end. The hinge 6 is fitted with the turntable 41 through the staggered component, and the hinge 6 is combined into a closed plane covering the through hole 413.

[0041] See also Figure 2 , Figure 3 , Figure 4The cleaning assembly 5 includes a top cover 51, which is coaxially arranged in the charging port 2. The turntable 41 is located between the top cover 51 and the bottom ring 7. The top cover 51 is fitted with the end surface of the turntable 41. A through groove 415 is symmetrically arranged on the top cover 51. The arc-shaped inclined platform 412 is slidably installed in the through groove 415. A sewage ring 52 is arranged in the top cover 51. The sewage ring 52 is connected to the end surface of the top cover 51. The sewage ring 52 is connected to the outer wall of the shell 1. The sewage ring 52 includes a gas nozzle section 521 and an air cavity section 522. The gas nozzle section 521 is connected to the end surface of the top cover 51. The air cavity section 522 is connected to the outer wall of the shell 1. A flexible valve sheet 53 is symmetrically arranged between the gas nozzle section 521 and the air cavity section 522. The valve sheet 53 is connected to the top plate. The valve sheets 53 are fitted to each other in a V shape. The fitting part of the valve sheet 53 points to the outer wall of the shell 1. The end surface of the top cover 51 is fitted with the hinge 6.

[0042] See also Figure 3 , Figure 5 A slip ring groove 72 is coaxially arranged in the bottom ring 7, the slip ring groove 72 is vertically connected with the sliding hole 73, the sliding hole 73 is connected with the outer wall of the housing 1, a pressing ring 8 is arranged in the slip ring groove 72, a push rod 81 is slidably installed in the sliding hole 73, one end of the push rod 81 extends out of the housing 1 through the sliding hole 73, the push rod 81 is connected to the bottom ring 7 through the compression spring 82, the pressing ring 8 is hinged to one end of the connecting rod 83, the other end of the connecting rod 83 is hinged to the push rod 81, and when the connecting rod 83 is parallel to the inner wall of the slip ring groove 72, the pressing ring 8 is fitted with the hinge 6.

[0043] See also Figure 5 , Figure 6 , Figure 7 The staggered component includes a boss 71 and a guide block 62. The boss 71 is provided with a guide groove, which is opened on the side wall of the boss 71. The guide groove is inclined and includes a first groove segment and a second groove segment. The inclination angle of the first groove segment is greater than that of the second groove segment. The first groove segment and the second groove segment are arranged alternately. A hinge hole 63 is provided on the hinge 6. The guide block 62 is connected in the hinge hole 63. The hinge hole 63 is coaxially rotatably connected with the boss 71, and the guide block 62 is slidably matched with the guide groove.

[0044] Working principle: When charging the device, insert the charging port 2 into the charging interface on the device, and the outer wall of the shell 1 fits with the charging interface. During the insertion process, the push rod 81 is pressed into the sliding hole 73 by the charging port 2. At the same time, the compression spring 82 in the bottom ring 7 is compressed. During the sliding process of the push rod 81, it drives the hinged connecting rod 83 forward, and the connecting rod 83 is pushed from the original vertical direction to tilt. Since the length of the connecting rod 83 remains unchanged, the projection of the connecting rod 83 in the vertical direction is shortened. During the tilting process of the connecting rod 83, the pressure ring 8 is pulled to slide downward in the sliding ring groove 72. At this time, the pressure ring 8 is separated from the hinge 6, and the pressure ring 8 is in a loose state.

[0045] During the insertion process of the charging port 2, the arc-shaped inclined platform 412 arranged on the turntable 41 cooperates with the inclined surface provided in the charging interface of the device through the No. 1 inclined surface 414. When the charging port 2 is inserted into the charging interface, the downward pressure passes through the No. 1 inclined surface 414 and the inclined surface corresponding to the charging interface on the device, and the arc-shaped inclined platform 412 slides and deflects in the through groove 415 provided in the top cover 51. The arc-shaped inclined platform 412 drives the rotation of the turntable 41. When the turntable 41 rotates, the torsion spring 42 is compressed. When the turntable 41 rotates, the tooth ring 411 engages with the teeth 61 on the hinge 6 to drive the hinge 6 to rotate around the boss 71. During the rotation process, the guide block 62 in the hinge hole 63 of the hinge 6 is staggered in the No. 1 guide groove 711 and the No. 2 guide groove on the boss 71. The guide block 62 slides from the highest point of the No. 1 guide groove 711 and the No. 2 guide groove 712 to the lowest point. At this time, the adjacent No. 1 inclined surface 414 of the hinge 6 is separated, and the hinge 6 moves downward while rotating. Finally, the hinge 6 rotates to the lower end of the turntable 41 in an interlaced manner, and changes from a closed state to an open state. As the pressure is continuously applied, the distance between the charging terminal 21 in the electrical port and the charging terminal 21 in the charging interface on the device is continuously approached. At the same time, the hole formed during the opening process of the hinge 6 is continuously expanded. When the set position is reached, the turntable 41 stops rotating, and the charging terminal 21 in the charging interface on the device is docked with the charging terminal 21 in the electrical port through the through hole 413, and the locking device 3 locks the housing 1 and the charging interface.

[0046] When the charging port 2 is docked with the charging interface on the device, the charging port 2 and the charging interface form a closed space. During the downward pressure process of the charging port 2, the pressure in the closed space increases, thereby generating a pressure difference. The gas flows to the drain ring 52 connected to the end face of the top cover 51 and is discharged outside the shell 1. During the downward pressure and exhaust process, the hinge 6 is simultaneously changed from a closed state to an open state. When the hinge 6 passes through the drain ring 52 on the end face of the top cover 51, the dust and dirt on the hinge 6 near the drain ring 52 are brought into the intake ring under the push of the pressurized gas. When it reaches the valve plate 53, the valve plate 53 opens under the push of the fluid pressure, and the dust and dirt are discharged outside the shell 1 along with the airflow.

[0047] When charging is completed, the locking device 3 is unlocked and the charging port 2 is unplugged from the charging interface. The charging port 2 and the charging interface form a closed space in a negative pressure state. The airflow outside the shell 1 passes through the drain ring 52 to the valve plate 53. Due to the reverse pressure of the gas, the valve plate 53 will close quickly to prevent the airflow from carrying dust and dirt into the charging port 2.

[0048] When the connector is unplugged, the No. 1 inclined surface 414 is separated from the inclined surface opened in the charging interface of the device, and the elastic potential energy of the torsion spring 42 is released, pushing the turntable 41 to reverse. When the turntable 41 reverses, the tooth ring 411 engages with the teeth 61 on the hinge 6 to drive the hinge 6 to rotate around the boss 71. During the rotation, the guide block 62 in the hinge hole 63 of the hinge 6 slides in the No. 1 guide groove 711 and the No. 2 guide groove 712 on the boss 71, and the guide block 62 slides from the lowest point of the No. 1 guide groove 711 and the No. 2 guide groove 712 to the highest point, and the hinge 6 moves upward, and the adjacent No. 1 inclined surfaces 414 of the hinge 6 are re-fitted, and at the same time, the adjacent blocking pieces 65 are squeezed and fitted, and the state is changed from the open state to the closed state.

[0049] When the charging connector is unplugged, the elastic potential energy of the compression spring 82 is released, pushing the push rod 81 out of the sliding hole 73. The pushing out of the push rod 81 drives the connecting rod 83 to reset. At this time, the connecting rod 83 returns to the original vertical direction. At this time, the projection length of the connecting rod 83 in the vertical direction is the highest. During the resetting process of the connecting rod 83, the pressure ring 8 is pushed to move upward in the sliding ring groove 72. The pressure ring 8 fits with the hinge 6 again, and the hinge 6 is clamped under the action of the top cover 51 and the turntable 41.

[0050] A specific embodiment of the present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above described embodiment. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments without departing from the principles and ideas of the present invention should still fall within the scope of protection of the present invention.

Claims

1. An AC charging connector, characterized in that: The invention comprises a housing (1), a charging port (2), a charging terminal (21), a locking device (3), a hinge (6), a bottom ring (7), a boss (71) and teeth (61); the housing (1) is provided with a charging port (2); the charging port (2) is provided with a charging terminal (21); the housing (1) is provided with a locking device (3) for docking and fixing with the charging interface; the housing (1) is provided with a closing component (4), a cleaning component (5) and a hinge (6); the inner wall of the charging port (2) is coaxially provided with a bottom ring (7); the charging terminal (21) is located in the bottom ring (7); A plurality of bosses (71) are evenly distributed in an annular shape on the end surface of the bottom ring (7), a hinge (6) is rotatably mounted on the boss (71), adjacent hinges (6) are fitted together, a plurality of hinges (6) are combined into a closed plane, one end of the hinge (6) is provided with teeth (61), the closing component (4) is installed in the charging port (2), the closing component (4) is connected to the teeth (61), the closing component (4) is used to drive the hinge (6) to open by pressure when the charging port (2) is docked with the device, and the cleaning component (5) is used to clean dust and dirt on the surface of the hinge (6) during the opening process.

2. An AC charging connector according to claim 1, characterized in that: The closing component (4) comprises a turntable (41), a torsion spring (42), a toothed ring (411) and an arc-shaped inclined platform (412). The turntable (41) is coaxially rotatably installed in the charging port (2). The turntable (41) and the charging port (2) are connected via a torsion spring (42). A through hole (413) is provided at the center of the turntable (41). A toothed ring (411) is provided on the inner wall of the base. The toothed ring (411) meshes with the teeth (61). An arc-shaped inclined platform (412) is symmetrically provided on the end surface of the turntable (41). A first inclined surface (414) is provided on the arc-shaped inclined platform (412). The first inclined surface (414) is arranged clockwise from the lower end to the higher end. The hinge (6) is fitted with the turntable (41) via an interlaced component. The hinge (6) is combined into a closed plane covering the through hole (413).

3. An AC charging connector according to claim 2, characterized in that: The cleaning assembly (5) comprises a top cover (51), the top cover (51) is coaxially arranged in the charging port (2), the turntable (41) is located between the top cover (51) and the bottom ring (7), the top cover (51) and the end surface of the turntable (41) are in contact with each other, the top cover (51) is symmetrically provided with through grooves (415), the arc-shaped inclined platform (412) is slidably installed in the through grooves (415), a sewage ring (52) is arranged in the top cover (51), the sewage ring (52) is communicated with the end surface of the top cover (51), the sewage ring (52) is communicated with the outer wall of the shell (1), and the end surface of the top cover (51) is in contact with the hinge (6).

4. The AC charging connector according to claim 3, characterized in that: A sliding ring groove (72) is coaxially arranged in the bottom ring (7), the sliding ring groove (72) is vertically connected to the sliding hole (73), the sliding hole (73) is connected to the outer wall of the shell (1), a pressing ring (8) is arranged in the sliding ring groove (72), a push rod (81) is slidably installed in the sliding hole (73), one end of the push rod (81) extends out of the shell (1) through the sliding hole (73), the push rod (81) is connected to the bottom ring (7) through a compression spring (82), the pressing ring (8) is hinged to one end of the connecting rod (83), and the other end of the connecting rod (83) is hinged to the push rod (81), and when the connecting rod (83) is parallel to the inner wall of the sliding ring groove (72), the pressing ring (8) is in contact with the hinge (6).

5. The AC charging connector according to claim 2, characterized in that: The staggered assembly comprises a boss (71) and a guide block (62); the boss (71) is provided with a guide groove, the guide groove is opened on the side wall of the boss (71), the guide groove is inclined, the guide groove comprises a first guide groove (711) and a second guide groove (712); the first guide groove (711) has an inclination angle greater than that of the second guide groove (712); the first guide groove (711) and the second guide groove (712) are arranged in a staggered manner; the hinge (6) is provided with a hinge hole (63), the hinge hole (63) is connected with the guide block (62), the hinge hole (63) is coaxially rotatably connected with the boss (71), and the guide block (62) is slidably matched with the guide groove.

6. The AC charging connector according to claim 4, characterized in that: The hinge (6) is provided with second inclined surfaces (64) alternately on both sides, the adjacent second inclined surfaces (64) are in contact with each other, a baffle (65) is provided on the second inclined surface (64), the baffle (65) is made of a flexible material, and an angle α is formed between the second inclined surface (64) and the end surface of the hinge (6), wherein 10°<α<30°.

7. An AC charging connector according to claim 6, characterized in that: The thickness of the baffle (65) increases gradually from the side to the center of the hinge (6).

8. The AC charging connector according to claim 3, characterized in that: The drain ring (52) comprises an air nozzle section (521) and an air cavity section (522); the air nozzle section (521) is in communication with the end surface of the top cover (51); the air cavity section (522) is in communication with the outer wall of the shell (1); a flexible valve sheet (53) is symmetrically arranged between the air nozzle section (521) and the air cavity section (522); the valve sheet (53) is connected to the top plate; the valve sheets (53) are fitted together in a V-shape, and the fitting part of the valve sheet (53) points to the outer wall of the shell (1).

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