A car charging port

Abstract

The present invention relates to the technical field of electric vehicle charging connection, and in particular to a car charging port, comprising a shell, a mounting hole is provided on the front of the shell, a through hole is provided in the center of the front of the shell and a charging interface is installed, a charging gun clamping assembly for clamping and controlling the charging gun is provided on the shell, a rotating assembly for controlling the rotation of the rotating clamping claw to clamp the charging gun is provided on the telescopic warehouse, a propulsion assembly for driving the sliding key to move forward is provided on the shell, a reset assembly for driving the sliding key to reset is provided on the telescopic warehouse, and a cover assembly for shielding the charging interface to prevent dust is also provided on the shell. The present invention automatically realizes the connection between the charging gun and the charging interface after waiting for the vehicle to cool down by clamping the charging gun with the rotating clamping claw and moving the sliding key forward and backward, thereby protecting the vehicle battery, circuit, etc., avoiding the waiting problem caused by manual connection, and the power consumption problem caused by the long-term standby of the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle charging connection, and in particular to a vehicle charging port. Background Art

[0002] The charging port of a car is a component used to connect a charging gun to charge the electric vehicle. The charging port is usually located on the outside of the vehicle and is mainly composed of a shell and a charging interface set on the shell, so that users can easily connect the charging gun when charging.

[0003] After a new energy vehicle has been running for a certain period of time or has been exposed to the sun for a long time, the temperature of the power box will rise, which will cause the battery temperature to rise. Immediately charging the electric vehicle at this time will accelerate the aging and damage of the lines in the car. Therefore, it is necessary to stop and wait for a period of time, and wait for the power box to cool down before charging, so as to protect the battery, lines, etc. However, the systems of some existing new energy vehicles lack the function of scheduled charging. In the scenario of home charging, there are no conditions for charging piles with corresponding functions. It is impossible to wait for the charging gun to cool down before charging. It is necessary to wait with someone, which leads to extreme inconvenience in use and reduced charging efficiency. In addition, even if the new energy vehicle has the function of scheduled charging, the vehicle will enter the standby waiting state while waiting for charging. In this state, there is a large consumption of electricity, which affects the conservation of resources. In addition, the existing APP and vehicle systems are prone to BUG, ​​non-response, failure to start the scheduled charging function, etc., which makes the expected charging state impossible to achieve.

[0004] For this purpose, a car charging port is proposed. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a car charging port.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a car charging port, comprising a shell, a mounting hole is opened on the front side of the shell, a through hole is opened in the center of the front side of the shell and a charging interface is installed, and a charging gun clamping assembly for clamping and controlling the charging gun is arranged on the shell.

[0007] The charging gun control assembly includes a telescopic compartment, and at least three connecting holes are distributed in a ring on the front of the shell, and the telescopic compartment is connected in the connecting holes. A sliding key is slidably connected to the inner cavity of the front of the telescopic compartment, and a rotating clamp is rotatably installed on the front of the sliding key.

[0008] The telescopic warehouse is provided with a rotating component for controlling the rotating clamp to rotate and clamp the charging gun, the outer shell is provided with a propulsion component for driving the sliding key to move forward, the telescopic warehouse is provided with a reset component for driving the sliding key to reset, and the outer shell is also provided with a cover assembly for covering the charging interface to prevent dust.

[0009] The propulsion assembly includes a fixed cylinder, which is arranged at the inner back end of the telescopic bin, a slide groove is provided in the fixed cylinder and a propulsion plug rod is sleeved thereon, and one end of the propulsion plug rod located outside the fixed cylinder is provided on a sliding key, both sides of the back end of the fixed cylinder are connected and communicated with a delivery pipeline, a medium cylinder is connected to the back side of the outer shell, two medium grooves are provided in the medium cylinder, the free ends of the two delivery pipelines on the corresponding sides are respectively connected and communicated with the two medium grooves, and the delivery pipelines on the other sides are connected and communicated with each other, a pressure delivery piston 1 and a pressure delivery piston 2 are respectively sleeved in the two medium grooves, a telescopic motor is installed on the medium groove, the transmission shaft of the telescopic motor is connected to the pressure delivery piston 1, a return pipe is installed on the medium cylinder at a position corresponding to the pressure delivery piston 2, the return pipe is communicated with the medium groove at the corresponding position, an electric normally closed valve for controlling the opening and closing of the return pipe is installed on the return pipe, the back end of the return pipe is connected and communicated with a temporary elastic ball, a reset spring for resetting the pressure delivery piston 2 is connected to the back side of the pressure delivery piston 2, and the medium groove is filled with medium.

[0010] As a preferred technical solution of the present invention, the rotating component includes a half-toothed ring, a movable groove is provided on the front of the sliding key, the two sides of the movable groove are semi-circular, and the middle part of the movable groove is a long rectangle that runs through the rear side of the sliding key. The back side of the rotating clamp is connected to two half-toothed rings, and the two half-toothed rings are respectively sleeved on both sides of the movable groove. The movable groove has a circular groove on the inner side of the half-toothed ring, and a driving gear is rotatably installed in the circular groove. The inner side of the half-toothed ring is provided with gear teeth and meshes with the driving gear. A tooth plate is inserted in the middle of the movable groove, and the wall surface of the tooth plate is provided with gear teeth and meshes with the driving gear. The driving gear is located between the half-toothed ring and the tooth plate. The end of the thrust plug rod outside the fixed cylinder is connected to the tooth plate, and the back side of the sliding key is connected to a resistance increasing plate, and the resistance increasing plate is connected to a rubber ball for tightly fitting the inner wall of the telescopic warehouse to increase the movement resistance.

[0011] As a preferred technical solution of the present invention, the reset assembly includes a pull-back spring, the push plug rod is sleeved with the pull-back spring, and the two ends of the pull-back spring are respectively connected to the fixed tube and the push plug rod.

[0012] As a preferred technical solution of the present invention, the reset assembly further includes an electromagnet connected to the back side of the fixing cylinder.

[0013] As a preferred technical solution of the present invention, the cover plate assembly includes a rotary plate, which is rotatably installed on the top of the front side of the shell, and a dust cover is connected to the end of the rotary plate, and the dust cover is attached to the charging interface.

[0014] As a preferred technical solution of the present invention, a clamping column is connected to the rotating clamping claw, and the clamping column abuts against the outer wall surface of the dust cover.

[0015] As a preferred technical solution of the present invention, the upper rotating clamp includes a pressure plate and a pressure head, a sliding hole is opened on the top of the pressure plate and a guide rod is sleeved thereon, the top of the guide rod is connected to the pressure head, a threaded hole is opened on the top of the pressure plate and a threaded rod is threadedly connected thereto, the pressure head has a central opening and the end of the threaded rod is located therein.

[0016] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0017] By rotating the clamp to clamp the charging gun and moving the sliding key back and forth, the charging gun and the charging port are automatically connected after waiting for the vehicle to cool down, thereby protecting the vehicle's battery, lines, etc., avoiding waiting problems caused by manual connection and power consumption problems caused by long-term standby of the vehicle. The mechanical movement is more stable, avoiding charging accidents caused by loose manual insertion.

[0018] The charging gun is clamped by the rotating clamp. After the charging gun is connected to the charging port for charging, the rotating clamp maintains the clamping state of the charging gun, thereby increasing the stability of the charging gun during the charging process, thereby reducing the occurrence of accidental risks and improving the safety of charging.

[0019] By setting up a temporary storage elastic ball, when the vehicle is out of power while waiting for charging, space for accommodating the medium can be temporarily provided so that structures such as the sliding key can be moved back to achieve docking between the charging gun and the charging interface, thereby avoiding the problem of being unable to charge after power outage. The structure will automatically reset after charging for continued use.

[0020] By controlling whether or not hydraulic oil is injected and the amount of injection by the telescopic motor, the functional control of the rotation of a number of rotating jaws and the extension and retraction of the sliding key is realized. While ensuring the realization of the functions, the number of electrical equipment used is reduced to alleviate the pressure of maintenance and repair and reduce costs.

[0021] Through the rotating function of the rotating claw, after the dust cover covers the charging port, the dust cover is clamped by applying the rotating force of the rotating claw, thereby increasing the stability of the dust cover during use, preventing the dust cover from deviating from its position and causing dust and other impurities to enter the charging port, thereby improving the protection effect of the charging port.

[0022] The distance between the pressure plate and the pressure head is adjusted by rotating the threaded rod, so that when clamping the charging gun with a locking structure, the rotating claw located at the upper part can correspond to the mechanical button of the charging gun, thereby ensuring the charging connection function. In addition, the forward and backward movement of the sliding key and the rotation of the rotating claw will not affect the clamping effect when charging the charging gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the back structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the expanded structure of the charging interface of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the present invention without the dust cover;

[0027] Figure 5 It is a cross-sectional structural schematic diagram of the medium cartridge of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the telescopic warehouse of the present invention;

[0029] Figure 7 It is a schematic cross-sectional structural diagram of the telescopic bin of the present invention;

[0030] Figure 8 It is a schematic cross-sectional structural diagram of the sliding key and the fixing cylinder of the present invention;

[0031] Fig. 9 It is a front structural schematic diagram of the sliding key of the present invention;

[0032] Fig.10 It is a schematic diagram of the back structure of the rotating clamp of the present invention.

[0033] Among them: 10, shell; 11, charging interface; 12, telescopic bin; 13, sliding key; 14, rotating claw; 15, fixed cylinder; 16, push plug rod; 17, conveying pipeline; 18, medium cylinder; 19, medium tank; 20, pressure piston one; 21, telescopic motor; 22, pressure piston two; 23, reset spring; 24, return pipe; 25, electric normally closed valve; 26, temporary elastic ball; 27, movable groove; 28, half gear ring; 29, driving gear; 30, gear plate; 31, resistance increasing plate; 32, pull-back spring; 33, electromagnet; 34, rotary plate; 35, dust cover; 36, clamping column; 37, line bin; 38, pressure plate; 39, pressure head; 40, guide rod; 41, threaded rod. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0035] Embodiment: Figure 1-10 As shown, a car charging port includes a shell 10, and a protruding area for installing a panel cover is provided on one side of the front of the shell 10. The panel cover is a technical feature for shielding the shell 10 in a conventional setting. The specific installation method and structure are existing well-known technologies and are not described in detail here. A mounting hole is provided on the front of the shell 10, and the shell 10 is used for bolts and other connecting parts to pass through the mounting hole to connect with the vehicle. A through hole is provided in the center of the front of the shell 10 and a charging interface 11 is installed. The charging interface 11 includes a fast charging interface, a slow charging interface and an interface of any charging protocol. A line bin 37 for centralized power lines and communication lines is installed on the rear side of the charging interface 11, and the line passes out from the end of the line bin 37. A charging gun clamping assembly for clamping and controlling the charging gun is provided on the shell 10.

[0036] The charging gun control assembly includes a telescopic bin 12, and at least three connecting holes are distributed in a ring on the front of the shell 10, and the telescopic bin 12 is connected in the connecting holes. A sliding key 13 is slidably connected to the inner cavity of the front of the telescopic bin 12, and a rotating clamp 14 is rotatably installed on the front of the sliding key 13.

[0037] The telescopic bin 12 is provided with a rotating component for controlling the rotating clamp 14 to rotate and clamp the charging gun, the outer shell 10 is provided with a propulsion component for driving the sliding key 13 to move forward, the telescopic bin 12 is provided with a reset component for driving the sliding key 13 to reset, and the outer shell 10 is also provided with a cover assembly for shielding the charging interface 11 to prevent dust.

[0038] The propulsion assembly includes a fixed cylinder 15, which is arranged at the inner back end of the telescopic bin 12. A slide groove is provided in the fixed cylinder 15 and a propulsion plug rod 16 is sleeved therein. The propulsion plug rod 16 includes a piston and a plug rod. The piston is slidably connected in the fixed cylinder 15 and can slide in the fixed cylinder 15. The plug rod is connected to the piston and passes through the front of the fixed cylinder 15. One end of the propulsion plug rod 16 located outside the fixed cylinder 15 is arranged on the sliding key 13. Both sides of the back end of the fixed cylinder 15 are connected and communicated with a conveying pipeline 17. The back side of the housing 10 is connected to a medium cylinder 18, and two medium cylinders 18 are provided in the medium cylinder 18. The free ends of the two delivery pipelines 17 on the corresponding sides are respectively connected and communicated with the two medium grooves 19, and the delivery pipelines 17 on the other sides are connected and communicated with each other. The two medium grooves 19 are respectively sleeved with a pressure delivery piston 1 20 and a pressure delivery piston 2 22, which can slide in the medium groove 19. A telescopic motor 21 is installed on the medium groove 19, and the transmission shaft of the telescopic motor 21 is connected with the pressure delivery piston 1 20. A return pipe 24 is installed on the medium cylinder 18 at the position corresponding to the pressure delivery piston 22, and the return pipe 24 is communicated with the medium groove 19 at the corresponding position. The return pipe 24 is provided with an electric normally closed valve 25 for controlling the opening and closing of the return pipe 24. The back end of the return pipe 24 is connected and communicated with a temporary elastic ball 26. The back side of the pressure piston 22 is connected with a reset spring 23 for resetting the pressure piston 22. The medium groove 19 is filled with a medium, which is specifically hydraulic oil. It should be noted that the movement amplitude of the push rod 16 is slightly greater than the interface depth of the charging interface 11. A start button and a reset button for controlling the start and stop of the device are installed on the housing 10. It should be noted that a control box powered by a vehicle battery is installed inside the vehicle to control the present embodiment. In the example, the start and stop of the electrical equipment can be controlled by the time relay and the temperature sensor to detect the battery temperature after clamping the charging gun, which serves as a starting signal for connecting the charging gun to the charging interface 11 to control the telescopic motor 21. This embodiment is not limited to this. The movement position of the pressure-feeding piston 20 is detected by setting a sensor. In this embodiment, a plurality of magnetic sensors are installed on the medium cylinder 18, and a magnet for magnetic sensor detection is provided in the pressure-feeding piston 20. The magnetic sensor detects the pressure-feeding piston 20, and sends a signal to assist the control system in realizing position control.

[0039] like Figure 8 , Fig. 9 and Fig.10As shown, the rotating assembly includes a half-toothed ring 28, a movable groove 27 is opened on the front of the sliding key 13, the two sides of the movable groove 27 are semi-circular, and the middle part of the movable groove 27 is a long rectangle that runs through the rear side of the sliding key 13. The back side of the rotating clamp 14 is connected to two half-toothed rings 28, and the two half-toothed rings 28 are respectively sleeved on both sides of the movable groove 27. The movable groove 27 has a circular groove opened on the inner side of the half-toothed ring 28, and a driving gear 29 is rotatably installed in the circular groove. The inner side of the half-toothed ring 28 is provided with gear teeth and meshes with the driving gear 29. The vertical section of the driving gear 29 is I-shaped, and a tooth plate 30 is inserted in the middle of the movable groove 27. The wall surface of the tooth plate 30 is provided with gear teeth and meshes with the driving gear 29. The driving gear 29 is meshed, and the driving gear 29 is located between the half gear ring 28 and the tooth plate 30. The middle part of the driving gear 29 is set to be smaller in size so that the tooth plate 30 can drive the rotating clamp 14 to rotate in and out greatly during a shorter stroke. A groove for accommodating the tooth plate 30 is provided on the pressure plate 38. The end of the pusher rod 16 located outside the fixed cylinder 15 is connected to the tooth plate 30. The back side of the sliding key 13 is connected to a resistance increasing plate 31. The resistance increasing plate 31 is connected to a rubber ball for tightly fitting the inner wall of the telescopic bin 12 to increase the movement resistance. It should be noted that the elastic force between the telescopic bin 12 and the sliding key 13 is smaller than the pulling force of the pull-back spring 32.

[0040] like Figure 8 As shown, the reset assembly includes a pull-back spring 32, and the pull-back spring 32 is sleeved on the push plug rod 16. The two ends of the pull-back spring 32 are respectively connected to the fixed cylinder 15 and the push plug rod 16. The pull-back spring 32 adopts a spring with a relatively large elastic force so as to be sufficient to pull the charging gun to connect with the charging interface 11. Correspondingly, the telescopic motor 21 adopts a model with a larger thrust, which is not limited in this application.

[0041] like Figure 6 As shown, the reset assembly further includes an electromagnet 33 , which is connected to the back side of the fixing cylinder 15 , and a metal block that can be attracted by the magnetic force of the electromagnet 33 is arranged inside the push plug rod 16 .

[0042] like Figure 1 and Figure 2 As shown, the cover assembly includes a rotary plate 34, which is rotatably installed on the top of the front side of the shell 10. A rubber ring for increasing friction is provided at the rotating connection between the rotary plate 34 and the shell 10. A dust cover 35 is connected to the end of the rotary plate 34, and the dust cover 35 is attached to the charging port 11.

[0043] A clamping column 36 is connected to the rotating clamping jaw 14 , and the clamping column 36 abuts against the outer wall surface of the dust cover 35 .

[0044] like Fig.10As shown, the rotating clamp 14 corresponding to the upper part of the charging gun includes a pressing plate 38 and a pressing head 39. A sliding hole is opened on the top of the pressing plate 38 and a guide rod 40 is sleeved thereon. The top of the guide rod 40 is connected to the pressing head 39. A threaded hole is opened on the top of the pressing plate 38 and a threaded rod 41 is threadedly connected thereto. The center of the pressing head 39 is opened and the end of the threaded rod 41 is located therein.

[0045] Working principle:

[0046] Before use: flip the dust cover 35 upward from the bottom, the dust cover 35 is rotated and erected from the shell 10 through the rotary plate 34, and the charging port of the charging interface 11 is exposed. The dust cover 35 is erected above the charging interface 11 through the friction between the rotary plate 34 and the shell 10, which plays a certain shielding and protective role. The user then inserts the charging gun into the charging interface 11 to realize the charging connection.

[0047] When in use: The first step is to place the charging gun in front of the charging interface 11 without inserting it when waiting for charging, and press the start button on the front of the housing 10. The transmission shaft of the telescopic motor 21 extends to push the pressure piston 20 to squeeze the hydraulic oil in the medium tank 19. The hydraulic oil in the medium tank 19 is injected into the fixed cylinder 15 through the delivery pipeline 17, thereby pushing the push rod 16 to extend. After the push rod 16 extends, it pushes the sliding key 13 to move out of the telescopic bin 12. Then the transmission shaft of the telescopic motor 21 retracts a certain amplitude but not completely, so that the capacity of the medium tank 19 to accommodate the hydraulic oil increases, and the push rod 16 is pulled back by the rebound of the pull-back spring 32, and the push rod 1 6 When moving back, the resistance increasing plate 31 and the telescopic chamber 12 remain stationary due to the large friction between them. The thrust plug rod 16 will first pull the gear plate 30 which is easier to move. When the gear plate 30 moves, it drives the driving gear 29 to rotate through meshing. The driving gear 29 drives the semi-toothed ring 28 to rotate out of the sliding key 13 through meshing, and then drives the rotating claw 14 to rotate to clamp the charging gun. The clamping force depends on the friction between the sliding key 13 and the telescopic chamber 12. This is a customizable item. In addition, for a charging gun with a locking structure, the distance between the pressure head 39 and the pressure plate 38 can be adjusted by rotating the threaded rod 41, so that the pressure head 39 can apply pressure to the mechanical button of the charging gun after rotation.

[0048] In the second step, after the time setting of the time relay or the temperature detection of the temperature sensor, when the charging condition is met, the transmission shaft of the telescopic motor 21 pulls the pressure piston 20 back to further expand the capacity of the medium tank 19, so that the push plug rod 16 continues to be pushed back by the pull-back spring 32 and squeezes the hydraulic oil back into the medium tank 19 through the delivery pipeline 17. During the back movement of the push plug rod 16, the rotating clamp 14 cannot continue to rotate due to the clamping of the charging gun, so that the tooth plate 30 cannot slide in the sliding key 13. Therefore, the push plug rod 16 pulls the sliding key 13 to move into the telescopic warehouse 12 through the tooth plate 30. During the movement of the sliding key 13, the charging gun is clamped by the rotating clamp 14 to achieve the connection between the charging gun and the charging interface 11, and then the charging gun is connected to the charging port 11. To realize charging of the vehicle, if the charging gun has a locking structure, the transmission shaft of the telescopic motor 21 is extended, and a certain amount of hydraulic oil is squeezed into the sliding key 13. The push rod 16 is extended again by the injection of hydraulic oil, pushing the gear plate 30 which can move better to move. The gear plate 30 drives the driving gear 29 to rotate through meshing, and the driving gear 29 drives the semi-toothed ring 28 to rotate through meshing, so that the rotating jaw 14 is rotated and disengaged from the clamping of the charging gun. After the rotating jaw 14 contacts the sliding key 13, the push rod 16 further pushes the sliding key 13 to extend out of the telescopic compartment 12, changing the position of the rotating jaw 14, and then repeats the operation of partially retracting the transmission shaft of the telescopic motor 21 in the first step to allow the rotating jaw 14 to rotate and clamp the charging gun.

[0049] In the third step, when the car is powered off due to lack of electricity during the waiting charging process, the electric normally closed valve 25 is powered off and becomes normally open from normally closed. The push rod 16 slides and squeezes the hydraulic oil under the elastic force of the pull-back spring 32. The hydraulic oil is squeezed into the medium groove 19 corresponding to the pressure-transfer piston 22 through the delivery pipeline 17, so that the pressure-transfer piston 22 slides and squeezes the return spring 23. The pressure-transfer piston 22 injects the original hydraulic oil in the medium groove 19 into the temporary elastic ball 26 through the return pipe 24. The temporary elastic ball 26 is filled with liquid and expanded, and the push rod 16 slides to ensure the connection between the charging gun and the charging interface 11. Then, after the power is restored by connecting to charging, the telescopic motor 21 pulls the pressure-transfer piston 20 to reset, and the pressure-transfer piston 22 injects the hydraulic oil in the medium groove 19 into the medium groove 19 corresponding to the pressure-transfer piston 20 through the path of the delivery pipeline 17 and the fixed cylinder 15 by the rebound of the reset spring 23, and the temporary elastic ball 26 injects the internal hydraulic oil back into the medium groove 19 by rebound, and then the electric normally closed valve 25 is energized to keep it normally closed, thereby restoring to the initial state. In addition, the reset speed and reset stability of the push plug rod 16 can be guaranteed by energizing the electromagnet 33.

[0050] After use: by rotating the rotating jaw 14 in the above steps, the rotating jaw 14 is released from the clamping of the charging gun, and then the charging gun is pulled out, and the reset button is pressed. The transmission shaft of the telescopic motor 21 extends, retracts, and then extends a certain distance, thereby driving the sliding key 13 to extend, the rotating jaw 14 to rotate, the sliding key 13 to retract, and the rotating jaw 14 to rotate, so as to reset the rotating jaw 14 and other structures, and then flip down the dust cover 35, the dust cover 35 is engaged with the clamping column 36, and then the transmission shaft of the telescopic motor 21 is started to retract a certain distance. At this time, the rotating jaw 14 generates a rotational force and applies it to the dust cover 35, thereby increasing the stability of the dust cover 35.

[0051] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A car charging port, comprising a housing (10), a mounting hole being provided on the front of the housing (10), a through hole being provided at the center of the front of the housing (10) and a charging interface (11) being installed thereon, characterized in that: The housing (10) is provided with a charging gun clamping assembly for clamping and controlling the charging gun; The charging gun control assembly comprises a telescopic chamber (12), the front side of the housing (10) is provided with at least three connection holes distributed in an annular pattern, and the telescopic chamber (12) is connected in the connection holes, a sliding key (13) is slidably connected to the inner cavity of the front side of the telescopic chamber (12), and a rotating clamp (14) is rotatably mounted on the front side of the sliding key (13); The telescopic bin (12) is provided with a rotating assembly for controlling the rotating clamp (14) to rotate and clamp the charging gun, the housing (10) is provided with a propulsion assembly for driving the sliding key (13) to move forward, the telescopic bin (12) is provided with a reset assembly for driving the sliding key (13) to reset, and the housing (10) is also provided with a cover assembly for shielding the charging interface (11) to prevent dust; The propulsion assembly comprises a fixed cylinder (15), the fixed cylinder (15) being arranged at the inner back end of the telescopic bin (12), a slide groove being provided in the fixed cylinder (15) and a propulsion plug rod (16) being sleeved thereon, one end of the propulsion plug rod (16) being located outside the fixed cylinder (15) being arranged on the sliding key (13), both sides of the back end of the fixed cylinder (15) being connected and communicated with a delivery pipeline (17), a medium cylinder (18) being connected to the back side of the housing (10), two medium grooves (19) being provided in the medium cylinder (18), free ends of the two delivery pipelines (17) on the corresponding sides being respectively connected and communicated with the two medium grooves (19), and the delivery pipelines (17) on the other sides being connected and communicated with each other, and the two medium grooves (19) having two medium grooves (19) in them. A first pressure-transfer piston (20) and a second pressure-transfer piston (22) are sleeved, a telescopic motor (21) is mounted on the medium tank (19), a transmission shaft of the telescopic motor (21) is connected to the first pressure-transfer piston (20), a return pipe (24) is mounted on the medium cylinder (18) at a position corresponding to the second pressure-transfer piston (22), the return pipe (24) is connected to the medium tank (19) at the corresponding position, an electric normally closed valve (25) for controlling the opening and closing of the return pipe (24) is mounted on the return pipe (24), a temporary elastic ball (26) is connected to and communicated with the back end of the return pipe (24), a return spring (23) for returning the second pressure-transfer piston (22) is connected to the back side of the second pressure-transfer piston (22), and the medium tank (19) is filled with medium.

2. A car charging port according to claim 1, characterized in that: The rotating assembly comprises a half-toothed ring (28), a movable groove (27) is provided on the front of the sliding key (13), both sides of the movable groove (27) are semi-circular, the middle of the movable groove (27) is a long rectangle that passes through the rear side of the sliding key (13), the back side of the rotating clamp (14) is connected to the two half-toothed rings (28), the two half-toothed rings (28) are respectively sleeved on both sides of the movable groove (27), the movable groove (27) is provided with a circular groove on the inner side of the half-toothed ring (28), a driving gear (29) is rotatably installed in the circular groove, and the inner side of the half-toothed ring (28) is provided with a driving gear (29) that is rotatably installed in the circular groove. A gear plate (30) is inserted in the middle of the movable groove (27), a wall surface of the gear plate (30) is provided with gear teeth and meshes with the driving gear (29), the driving gear (29) is located between the semi-gear ring (28) and the gear plate (30), one end of the push rod (16) located outside the fixed cylinder (15) is connected to the gear plate (30), the back side of the sliding key (13) is connected to a resistance increasing plate (31), and a rubber ball is connected to the resistance increasing plate (31) for tightly fitting the inner wall of the telescopic chamber (12) to increase the movement resistance.

3. The vehicle charging port according to claim 2, characterized in that: The reset assembly comprises a pull-back spring (32), the push-plug rod (16) is sleeved with the pull-back spring (32), and the two ends of the pull-back spring (32) are respectively connected to the fixed cylinder (15) and the push-plug rod (16).

4. The vehicle charging port according to claim 3, characterized in that: The reset assembly further comprises an electromagnet (33), wherein the electromagnet (33) is connected to the back side of the fixing cylinder (15).

5. The vehicle charging port according to claim 3, characterized in that: The cover plate assembly comprises a rotary plate (34), the rotary plate (34) being rotatably mounted on the top of the front face of the housing (10), the end of the rotary plate (34) being connected to a dust cover (35), and the dust cover (35) being fitted to the charging interface (11).

6. The vehicle charging port according to claim 5, characterized in that: The rotating clamping claw (14) is connected to a clamping column (36), and the clamping column (36) abuts against the outer wall surface of the dust cover (35).

7. The vehicle charging port according to claim 3, characterized in that: The upper rotating clamp (14) comprises a pressing plate (38) and a pressing head (39); a sliding hole is formed at the top of the pressing plate (38) and a guide rod (40) is sleeved thereon; the top of the guide rod (40) is connected to the pressing head (39); a threaded hole is formed at the top of the pressing plate (38) and a threaded rod (41) is threadedly connected thereto; a central hole is formed at the pressing head (39) and an end of the threaded rod (41) is located therein.

Images