Charging gun with drag protection function and using method thereof

Abstract

The present invention discloses a charging gun with a drag protection function and a method for using the same, and relates to the technical field of charging guns. The present invention includes a charging port provided on the charging gun body for connecting to a car's power port, and a conductive cable is provided at the end of the charging gun body. The present invention also includes: a bias protection unit; a drag protection unit, including a locking assembly and a winding assembly, wherein the locking assembly is provided with a locking connection disk that is conductively connected to the conductive cable. The advantages are: the present invention can not only achieve a stable conductive connection of the charging gun, but also automatically disconnect and eject the charging gun from the car when the charging gun is subjected to a large external lateral drag force, thereby effectively protecting the car and the charging gun, and automatically disconnecting the conductive cable from the charging gun according to the magnitude of the drag force, thereby avoiding damage to the car or the charging pile due to the external drag force, thereby achieving effective drag protection.

Description

Technical Field

[0001] The present invention relates to the technical field of charging guns, and in particular to a charging gun with a drag protection function and a method of using the same. Background Art

[0002] A charging gun is a device used to charge new energy vehicles. During charging, the gun is usually locked and can only be removed after the vehicle owner automatically unlocks it. This can cause damage if the gun is violently dragged by an external force. Therefore, a new type of charging gun with drag protection is needed.

[0003] Existing charging guns use various methods to achieve drag protection during charging. For example, a drag-resistant intelligent temperature and humidity control charging gun with publication number CN117317686B includes a charging gun housing; a charging unit, which includes a charging wire fixedly mounted within the charging gun housing; a protective cover fixedly mounted on the charging gun housing; a charging port fixedly mounted within the protective cover, and the charging port is fixedly connected to the charging wire; a protective ring fixedly mounted within the charging gun housing that matches the charging wire; and a positioning unit, which includes a fixing plate fixedly mounted on the charging gun housing; and a threaded rod threadedly mounted on the fixing plate.

[0004] Existing charging guns use a reinforced positioning method to lock the charging port and the vehicle's power connection port. By strengthening the locking force, the charging gun is ensured not to separate when it is dragged. However, this method cannot separate the charging gun from the vehicle when the charging gun is subjected to lateral drag force, which can easily cause drag damage. For example, the prior art device referenced above uses an adsorption positioning plate to strengthen the connection strength between the charging gun and the vehicle. When subjected to a large external lateral drag force, the charging port of the charging gun and the vehicle's power connection port are easily damaged by the lateral drag force. At the same time, this device does not provide unlocking protection when the conductive cable is subjected to drag force, which has certain limitations.

[0005] Therefore, there is an urgent need to design a charging gun with a drag protection function and a method of using the same to solve the above problems. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the present invention provides a charging gun with a drag protection function and a method of using the same, which solves the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a charging gun with a drag protection function, including a charging port provided on a charging gun body for connecting to a vehicle power port, and a conductive cable provided at an end of the charging gun body, and further comprising:

[0008] The misalignment protection unit includes a positioning ring provided on the charging gun body, a pressing assembly provided on the positioning ring, a positioning assembly provided within the positioning ring, a positioning plate provided within the positioning assembly for positioning the power port and the charging port, and a misalignment mechanism provided within the positioning assembly for detecting misalignment. The misalignment mechanism cooperates with the pressing assembly to unlock and eject the charging gun body after misalignment.

[0009] The drag protection unit is arranged at the end of the charging gun body and includes a locking assembly and a winding assembly. The locking assembly is provided with a locking connection disk that is conductively connected to the conductive cable, and the locking assembly is provided with a disconnection mechanism for disconnecting the conductive cable. The winding assembly is provided with a winding rod for winding the conductive cable. The winding rod is driven to be retracted by the winding assembly, so that the conductive cable automatically releases the buffer after being subjected to the drag force.

[0010] Preferably, the charging gun body is provided with a control handle that is easy to move, and the charging gun body is provided with a conductive power-off indicator light for judging the charging status.

[0011] Preferably, the pressing assembly includes a plurality of ejection spring rods fixedly mounted on a positioning ring, a pressing ring is fixedly mounted on the plurality of ejection spring rods, and the pressing ring is pressed against the inner wall of the car charging box.

[0012] Preferably, the positioning assembly includes a push box fixedly installed in the positioning ring, a built-in groove is opened in the push box, and a sliding pin block is slidably installed in the built-in groove, a connecting frame is slidably installed on the sliding pin block, and a follower plate is fixedly installed at the lower part of the connecting frame, and a positioning card plate that cooperates with the car's power port is fixedly installed at the bottom of the follower plate, and a locking mechanism is installed between the sliding pin block and the push box.

[0013] Preferably, the locking mechanism includes an electric telescopic rod fixedly installed in the push box, and a positioning pin is fixedly installed on the driving end of the electric telescopic rod, a positioning hole is opened in the sliding pin block, and the positioning hole cooperates with the positioning pin, and a return spring is fixedly installed between the connecting frame and the inner wall of the push box.

[0014] Preferably, the biasing mechanism includes two side contact plates, and the two side contact plates are fixedly installed in the positioning ring through multiple return springs, and the two side contact plates are matched with the power connection port of the car, and a trigger mechanism is installed between each side contact plate and the push box;

[0015] The trigger mechanism includes a linkage guide tube fixedly installed in the positioning ring, and piston member 1 and piston member 2 are slidably installed at both ends of the linkage guide tube, and the linkage guide tube is filled with hydraulic oil. The end of the piston member 1 is fixedly installed on the side contact plate, and a trigger button is fixedly installed in the push box, and the trigger button cooperates with the piston member 2, and the trigger button cooperates with the electric telescopic rod.

[0016] Preferably, the locking assembly includes a support frame fixedly mounted on the end of the charging gun body, a fixing cylinder is fixedly mounted on the support frame, a locking box is fixedly mounted on the end of the charging gun body, and the locking connection disk is arranged in the locking box.

[0017] Preferably, the winding assembly includes a winding rod slidably installed in a fixed cylinder for winding the conductive cable, and a pull ring is fixedly installed on the winding rod, a connecting column is fixedly installed on the end of the winding rod, and a pushing plate is fixedly installed on the connecting column, a retraction spring rod for retracting the winding rod is fixedly installed between the connecting column and the inner wall of the fixed cylinder, two electromagnetic plates 2 are fixedly installed on the pushing plate, and two electromagnetic plates 1 that cooperate with the corresponding electromagnetic plates 2 are fixedly installed in the fixed cylinder.

[0018] Preferably, the disconnecting mechanism includes a plurality of linkage frames fixedly mounted on the conductive cable, a shear ring is slidably mounted on the snap connection plate through two push grooves, and the shear ring is fixedly connected to the plurality of linkage frames, a plurality of limiting shear pins cooperating with the shear ring are fixedly mounted on the snap connection plate, and a snap cover is provided on the top of the locking box.

[0019] A method for using a charging gun with a drag protection function, used for the above-mentioned charging gun with a drag protection function, comprises the following steps:

[0020] S1. When using this charging gun, insert the charging port on the charging gun body into the power port in the car charging box to complete the charging connection;

[0021] S2: When charging and connecting, the pressing component will be compressed, and the charging port and the power port will be locked by the positioning component;

[0022] S3. During the charging process, the offset mechanism is used to detect the offset of the charging gun body. When a large side force offset is detected, the offset mechanism and the pressing component cooperate to automatically unlock and eject the charging gun body.

[0023] S4. If the conductive cable is subjected to a large drag force during charging, the winding assembly will automatically release for initial buffering;

[0024] S5. When the buffer strength is insufficient, the conductive connection between the conductive cable and the locking connection plate is automatically released through the disconnection mechanism in the locking assembly, thereby completing the disconnection and disconnection of the charging gun body and the conductive cable, thereby realizing the anti-drag protection of the charging gun body.

[0025] The present invention provides a charging gun with a drag protection function and a method for using the same. It has the following beneficial effects:

[0026] 1. When using this charging gun with drag protection function, the charging port on the charging gun body and the car power port can be quickly locked in place by using the positioning clamp, positioning pin and positioning hole, which can effectively ensure the stability of the charging gun body during charging.

[0027] 2. When the charging gun with drag protection function is in use, the two side contact plates can monitor the offset between the charging port and the power connection port in real time. If the charging gun body is subjected to a large lateral drag force, a certain degree of tilt will be generated between the charging port and the power connection port. The side contact plates can automatically trigger the offset mechanism, causing the charging gun body to automatically pop out, releasing the connection of the charging gun body, and thus effectively protecting the charging gun body.

[0028] 3. When the charging gun with drag protection function is in use, it adopts the method of curling the conductive cable to provide initial protection. If the conductive cable is subjected to a light degree of drag, the winding rod can be automatically retracted to complete the rewinding and release of the conductive cable, thereby increasing the force applied to the conductive cable and improving its ability to withstand the drag force.

[0029] 4. When the charging gun with drag protection function is in use, the efficient and stable connection of the conductive cable can be achieved through the snap-fit ​​connection plate. When the conductive cable is subjected to a large degree of drag force, the shear ring can automatically cut off the limiting shear nail to achieve automatic disconnection and separation of the conductive cable, thereby quickly completing the connection between the conductive cable and the charging gun body, avoiding the external drag force affecting the car or the drag force of the car affecting the charging pile through the conductive cable.

[0030] To sum up, the present invention can not only achieve a stable conductive connection of the charging gun, but also automatically disconnect and eject the charging gun from the car when the charging gun is subjected to a large external lateral drag force, thereby effectively protecting the car and the charging gun. It can also automatically disconnect the conductive cable from the charging gun according to the magnitude of the drag force, thereby avoiding damage to the car or charging pile due to external drag force, thereby achieving effective drag protection.

[0031] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0033] Figure 1 This is a schematic diagram of the structure of a charging gun with a drag protection function proposed by the present invention;

[0034] Figure 2 for Figure 1 Schematic diagram of the structure after rotating a certain angle;

[0035] Figure 3 for Figure 2 Schematic diagram of the structure of the charging gun body and positioning ring in the middle part;

[0036] Figure 4 for Figure 3 Schematic diagram of the structural decomposition;

[0037] Figure 5 for Figure 4 A magnified view of the structure of the middle positioning ring;

[0038] Figure 6 for Figure 5 Schematic diagram of the structure after removing the positioning ring;

[0039] Figure 7 for Figure 6 Schematic diagram of the internal structure of the push box;

[0040] Figure 8 for Figure 7 Front view of

[0041] Figure 9 for Figure 7 Schematic diagram of the internal structure of the push box;

[0042] Figure 10 for Figure 6 Schematic diagram of the structure of the middle and side contact plates and linkage guide tubes;

[0043] Figure 11 for Figure 2 Schematic diagram of the structure of the charging gun body and support frame in the middle part;

[0044] Figure 12 for Figure 11 Schematic diagram of the structure of the middle fixing cylinder and the locking box;

[0045] Figure 13 for Figure 12 Schematic diagram of the internal structure of the fixed cylinder;

[0046] Figure 14 for Figure 12 Schematic diagram of the structure of the conductive cable and the lock box;

[0047] Figure 15 for Figure 14 Schematic diagram of the internal structure of the middle card lock box;

[0048] Figure 16 for Figure 15 Schematic diagram of the internal structure of the middle card lock box;

[0049] Figure 17 for Figure 16 Schematic diagram of the structural decomposition.

[0050] In the figure: 1 charging gun body, 2 charging port, 3 positioning ring, 4 support frame, 5 conductive cable, 6 pressure ring, 7 ejection spring rod, 8 push box, 9 side contact plate, 10 return spring, 11 linkage guide tube, 12 follower plate, 13 positioning card plate, 14 trigger button, 15 sliding pin block, 16 electric telescopic rod, 17 built-in groove, 18 return spring, 19 positioning pin, 20 positioning hole, 21 connecting frame, 22 fixing cylinder, 23 winding rod, 24 pull ring, 25 locking box, 26 push plate, 27 contraction spring rod, 28 electromagnetic plate 1, 29 electromagnetic plate 2, 30 engaging connecting plate, 31 linkage frame, 32 shear ring, 33 push groove, 34 limit shear pin, 35 piston part 1, 36 piston part 2. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0052] Example 1: Reference Figure 1-Figure 2 A charging gun with a drag protection function includes a charging port 2 provided on a charging gun body 1 and connected to a vehicle power port. The vehicle power port is provided in a vehicle charging box, and the vehicle power port is protected by the vehicle charging box.

[0053] A conductive cable 5 is provided at the end of the charging gun body 1. The current in the charging pile is transmitted to the charging gun body 1 through the conductive cable 5, and is transmitted to the car power port through the charging port 2, and the car is charged through the car power port.

[0054] The charging gun also includes:

[0055] The offset protection unit is located at the end of the charging gun body 1 and is used to lock the connection between the charging port 2 and the vehicle's power port. When the charging gun body 1 is subjected to a large degree of lateral drag, it automatically unlocks the charging gun body 1 and the vehicle and automatically ejects the charging gun body 1, thereby effectively protecting the charging gun body 1 and the vehicle from dragging.

[0056] The drag protection unit is arranged at the end of the charging gun body 1. When the conductive cable 5 at the end of the charging gun body 1 is subjected to external drag force, it is used to automatically disconnect the conductive cable 5 from the charging gun body 1 by releasing the winding and automatically disconnecting. Then, drag protection is performed by disconnecting, thereby preventing the drag force from affecting the car or charging pile, and achieving better drag protection.

[0057] The charging gun body 1 is provided with a control handle that is easy to move, and the rapid movement of the charging gun body 1 is controlled by the control handle. The charging gun body 1 is provided with a conductive power-off indicator light for judging the charging status, and the conductive power-off indicator light is used to judge whether the charging gun body 1 is charging.

[0058] Example 2: Reference Figure 2-Figure 10 The technical solution of this embodiment is different from that of the first embodiment in that: the misalignment protection unit includes a positioning ring 3 provided on the charging gun body 1, and a pressing component is provided on the positioning ring 3;

[0059] The pressing assembly includes a plurality of ejection spring rods 7 fixedly mounted on the positioning ring 3, and a pressing ring 6 is fixedly mounted on the plurality of ejection spring rods 7, and the pressing ring 6 presses against the inner wall of the car charging box;

[0060] When making a charging connection, insert the charging port 2 on the charging gun body 1 into the power port in the car charging box. The charging connection is completed when the charging port 2 and the power port are snapped together.

[0061] During the insertion of the charging port 2, the pressing ring 6 will first contact the inner wall of the car charging box, and gradually compress the multiple ejection spring rods 7 until they are fully inserted and engaged. At this time, the multiple ejection spring rods 7 are all in a compressed state.

[0062] In a further embodiment, a positioning assembly is provided in the positioning ring 3, and a positioning card 13 for positioning the power port and the charging port 2 is provided in the positioning assembly;

[0063] The positioning assembly includes a push box 8 fixedly mounted in the positioning ring 3, a built-in groove 17 is formed in the push box 8, and a sliding pin block 15 is slidably mounted in the built-in groove 17, a connecting frame 21 is slidably mounted on the sliding pin block 15, and a follower plate 12 is fixedly mounted on the lower part of the connecting frame 21, and a positioning card plate 13 that cooperates with the vehicle power port is fixedly mounted on the bottom of the follower plate 12;

[0064] Before inserting the charging port 2, first push up the sliding pin block 15 so that it slides upward in the built-in groove 17. Then, the connecting frame 21 drives the follower plate 12 and the positioning card plate 13 to slide upward, so that the positioning card plate 13 slides into the push box 8 for storage. Then, push the charging gun body 1 to move the charging port 2 and insert it into the power port to complete the conductive connection.

[0065] A return spring 18 is fixedly installed between the connecting frame 21 and the inner wall of the push box 8. After the conductive connection is completed, the sliding pin block 15 can be released. At this time, the return spring 18 will automatically extend and reset (the return spring 18 will be compressed when the sliding pin block 15 slides up), and then push the connecting frame 21, the follower plate 12 and the positioning card plate 13 back to their original positions. When the positioning card plate 13 returns to its initial position, the positioning card plate 13 in its initial position will lock and limit the charging port, making it impossible to separate from the charging port 2.

[0066] A locking mechanism is installed between the sliding pin block 15 and the push box 8. The locking mechanism includes an electric telescopic rod 16 fixedly installed in the push box 8, and a positioning pin 19 is fixedly installed on the driving end of the electric telescopic rod 16. A positioning hole 20 is opened in the sliding pin block 15, and the positioning hole 20 cooperates with the positioning pin 19;

[0067] When the positioning card plate 13 is locked in the limit position, the sliding pin block 15 will return to its original position. At this time, the electric telescopic rod 16 can be started to drive the positioning pin 19 to move, so that the positioning pin 19 is engaged with the positioning hole 20 in the sliding pin block 15, and the sliding pin block 15 can be automatically locked in position, thereby realizing the synchronous positioning of the sliding pin block 15, the connecting frame 21, the follower plate 12 and the positioning card plate 13, and the charging port 2 and the power port can be re-positioned and fixed, further improving the stability of the conductive connection between the two.

[0068] In a further embodiment, a deflection mechanism for detecting deflection is provided in the positioning assembly, and the deflection mechanism cooperates with the pressing assembly to realize unlocking and ejection of the charging gun body 1 after deflection;

[0069] The biasing mechanism includes two side contact plates 9, and both side contact plates 9 are fixedly installed in the positioning ring 3 through multiple return springs 10. Both side contact plates 9 are matched with the power connection port of the car, and a trigger mechanism is installed between each side contact plate 9 and the push box 8;

[0070] After the car's power port is connected to the charging port 2, the power port will be inside the positioning ring 3, and the side of the power port will contact and press against the two side contact plates 9 inside the positioning ring 3. At this time, if the charging gun body 1 is offset and tilted by the lateral drag force, the side contact plates 9 will be driven to tilt synchronously through the positioning ring 3, and then the side contact plates 9 will be squeezed by the lateral force under the action of the tilt, causing the side contact plates 9 to move.

[0071] The trigger mechanism includes a linkage guide tube 11 fixedly mounted in the positioning ring 3, and piston member 1 35 and piston member 2 36 are slidably mounted on both ends of the linkage guide tube 11. The linkage guide tube 11 is filled with hydraulic oil, and the end of piston member 1 35 is fixedly mounted on the side contact plate 9. A trigger button 14 is fixedly mounted in the push box 8, and the trigger button 14 cooperates with piston member 2 36, and the trigger button 14 cooperates with the electric telescopic rod 16.

[0072] When the side contact plate 9 moves under the lateral drag force, it drives the piston member 1 35 thereon to move into the linkage conduit 11, thereby squeezing the hydraulic oil in the linkage conduit 11 to move it, thereby pushing the piston member 2 36 at the other end of the linkage conduit 11 to move. When the piston member 2 36 moves to contact the trigger button 14, the trigger button 14 is triggered and activated.

[0073] When the trigger button 14 is triggered, the electric telescopic rod 16 will be controlled to move, and then the positioning pin 19 will be driven to move to release the positioning state of the sliding pin block 15. The return spring 18 will automatically shrink and reset to drive the follower plate 12 and the positioning card plate 13 to move, and release the limit state of the car's power port. At this time, multiple ejection spring rods 7 will automatically extend and reset, pushing the positioning ring 3 and the charging gun body 1 away from the car charging box, thereby realizing automatic separation of the charging port 2 and the power port, so that the charging gun body 1 will automatically break away from the car's contact charging state when it is subjected to a large lateral drag force, and the lock will be released when it is subjected to a drag force, avoiding greater damage to the charging gun body 1 and the car's power port, thereby achieving effective anti-drag protection.

[0074] Example 3: Reference Figure 1-Figure 2 as well as Figures 11-17 The technical solution of this embodiment is different from that of the second embodiment in that the drag protection unit includes a locking assembly and a winding assembly, wherein the locking assembly is provided with a locking connection disk 30 that is conductively connected to the conductive cable 5;

[0075] The snap-in connection plate 30 and the conductive cable 5 are in a snap-in connection state in a normal state, that is, the current in the conductive cable 5 is input into the charging gun body 1 through the snap-in connection plate 30 for charging.

[0076] The locking assembly includes a support frame 4 fixedly mounted on the end of the charging gun body 1, a fixing cylinder 22 fixedly mounted on the support frame 4, a locking box 25 fixedly mounted on the end of the charging gun body 1, and a locking connection plate 30 disposed in the locking box 25;

[0077] A disconnection mechanism for disconnecting the conductive cable 5 is provided in the locking assembly. The disconnection mechanism includes a plurality of linkage frames 31 fixedly mounted on the conductive cable 5. A shear ring 32 is slidably mounted on the locking connection plate 30 through two push grooves 33. The shear ring 32 is fixedly connected to the plurality of linkage frames 31. A plurality of limiting shear pins 34 cooperating with the shear ring 32 are fixedly mounted on the locking connection plate 30. A locking cover is provided on the top of the locking box 25.

[0078] When the conductive cable 5 is subjected to a large degree of dragging force, the external force pulls the conductive cable 5 so that it applies a dragging force to the shear ring 32 through the multiple linkage frames 31. When the instantaneous dragging force is large, the dragging force will act on the conductive cable 5 and drive the shear ring 32 to move rapidly through the linkage frame 31. When the shear ring 32 moves rapidly, it will impact the multiple limiting shear nails 34. If the dragging force is insufficient, the limiting shear nails 34 will not be cut off, and the conductive cable 5 can be effectively protected. If the dragging force is large, the limiting shear nails 34 will be directly cut off under the action of the dragging force, so that the conductive cable 5 is separated from the locking connection plate 30 when sliding, and the locking cover is pushed open to directly separate from the locking box 25. That is, when subjected to a large dragging force, the conductive cable 5 will be directly separated from the charging gun body 1;

[0079] That is, when the car owner forgets to pull out the gun and drives away directly after charging is completed, the drag force generated by the car will directly separate the charging gun body 1 from the conductive cable 5, thereby preventing the drag force generated by the car from directly acting on the charging pile through the conductive cable 5. The charging pile can be dragged to protect it, thereby preventing the charging pile from being pulled down by the conductive cable 5 and causing greater danger.

[0080] In a further embodiment, a winding rod 23 for winding the conductive cable 5 is provided in the winding assembly, and the winding rod 23 is driven to be retracted by the winding assembly, so that the conductive cable 5 automatically releases the buffer after being subjected to the drag force;

[0081] The winding assembly includes a winding rod 23 slidably mounted in a fixed cylinder 22 for winding the conductive cable 5, and a pull ring 24 is fixedly mounted on the winding rod 23. A connecting column is fixedly mounted on the end of the winding rod 23, and a push plate 26 is fixedly mounted on the connecting column. A retractable spring rod 27 for retracting the winding rod 23 is fixedly mounted between the connecting column and the inner wall of the fixed cylinder 22. Two electromagnetic plates 29 are fixedly mounted on the push plate 26, and two electromagnetic plates 1 28 that cooperate with the corresponding electromagnetic plates 29 are fixedly mounted in the fixed cylinder 22.

[0082] In the initial state, the pull ring 24 is pulled to pull the winding rod 23 out of the fixed cylinder 22, so that the electromagnetic plate 1 28 and the electromagnetic plate 2 29 are attracted to each other, and the spring rod 27 is stretched and contracted to complete the positioning of the winding rod 23. Then, the conductive cable 5 is partially wound on the winding rod 23 to form a partial winding buffer effect.

[0083] If the conductive cable 5 is subjected to a small drag force, the electromagnetic plate 2 29 and the electromagnetic plate 1 28 will be powered off, and the retractable spring rod 27 will automatically retract and reset, thereby pulling the winding rod 23 back into the fixed cylinder 22, thereby releasing the winding state of the conductive cable 5 wound thereon, and increasing the overall force-bearing length of the conductive cable 5. When it is subjected to a small external drag force, the overall force-bearing length can be increased to perform preliminary buffering, thereby achieving preliminary drag protection.

[0084] The specific drag protection principle of this charging gun is:

[0085] After the car's power port is connected to the charging port 2, the power port will be inside the positioning ring 3. At the same time, the side of the power port will contact and press against the two side contact plates 9 inside the positioning ring 3. At this time, if the charging gun body 1 is deflected and tilted by the lateral drag force, the side contact plates 9 will be driven to tilt synchronously through the positioning ring 3. Then, the side contact plates 9 will be squeezed by the lateral force under the tilting action, causing the side contact plates 9 to move;

[0086] When the side contact plate 9 moves under the lateral drag force, it drives the piston member 1 35 thereon to move into the linkage conduit 11, thereby squeezing the hydraulic oil in the linkage conduit 11 to move it, thereby pushing the piston member 2 36 at the other end of the linkage conduit 11 to move. When the piston member 2 36 moves to contact the trigger button 14, the trigger button 14 is triggered and activated.

[0087] When the trigger button 14 is triggered, the electric telescopic rod 16 will be controlled to move, and then the positioning pin 19 will be driven to move to release the positioning state of the sliding pin block 15. The return spring 18 will automatically shrink and reset to drive the follower plate 12 and the positioning card plate 13 to move, and release the limit state of the car's power port. At this time, multiple ejection spring rods 7 will automatically extend and reset, pushing the positioning ring 3 and the charging gun body 1 away from the car charging box, thereby realizing automatic separation of the charging port 2 and the power port, so that the charging gun body 1 will automatically break away from the car's contact charging state when it is subjected to a large lateral drag force, and the lock will be released when it is subjected to a drag force, avoiding greater damage to the charging gun body 1 and the car's power port, thereby achieving effective anti-drag protection.

[0088] If the conductive cable 5 is subjected to a small drag force, the electromagnetic plate 29 and the electromagnetic plate 1 28 will be de-energized, and the retractable spring rod 27 will automatically retract and reset, thereby pulling the winding rod 23 back into the fixed cylinder 22, thereby releasing the wound state of the conductive cable 5 thereon, thereby increasing the overall load-bearing length of the conductive cable 5, so that when it is subjected to a small external drag force, the overall load-bearing length can be increased to provide preliminary buffering, thereby achieving preliminary drag protection;

[0089] When the conductive cable 5 is subjected to a large degree of dragging force, the external force pulls the conductive cable 5 so that it applies a dragging force to the shear ring 32 through the multiple linkage frames 31. When the instantaneous dragging force is large, the dragging force will act on the conductive cable 5 and drive the shear ring 32 to move rapidly through the linkage frame 31. When the shear ring 32 moves rapidly, it will impact the multiple limiting shear nails 34. If the dragging force is insufficient, the limiting shear nails 34 will not be cut off, and the conductive cable 5 can be effectively protected. If the dragging force is large, the limiting shear nails 34 will be directly cut off under the action of the dragging force, so that the conductive cable 5 is separated from the locking connection plate 30 when sliding, and the locking cover is pushed open to directly separate from the locking box 25. That is, when subjected to a large dragging force, the conductive cable 5 will be directly separated from the charging gun body 1;

[0090] That is, when the car owner forgets to pull out the gun and drives away directly after charging is completed, the drag force generated by the car will directly separate the charging gun body 1 from the conductive cable 5, thereby preventing the drag force generated by the car from directly acting on the charging pile through the conductive cable 5. The charging pile can be dragged to protect it, thereby preventing the charging pile from being pulled down by the conductive cable 5 and causing greater danger.

[0091] An embodiment of the present invention further provides a method for using a charging gun with a drag protection function, which is used for the above-mentioned charging gun with a drag protection function, comprising the following steps:

[0092] S1. When using this charging gun, insert the charging port 2 on the charging gun body 1 into the power port in the car charging box to complete the charging connection;

[0093] S2: When charging and connecting, the pressing component will be compressed, and the charging port 2 and the power port will be locked by the positioning component;

[0094] S3. During the charging process, the offset mechanism is used to detect the offset of the charging gun body 1. When a large side force offset is detected, the offset mechanism and the pressing assembly cooperate to automatically unlock and eject the charging gun body 1.

[0095] S4. If the conductive cable 5 is subjected to a large drag force during charging, the winding assembly will automatically release for preliminary buffering;

[0096] S5. When the buffer strength is insufficient, the conductive connection between the conductive cable 5 and the locking connection plate 30 is automatically released through the disconnection mechanism in the locking assembly, thereby completing the disconnection and disconnection of the charging gun body 1 and the conductive cable 5, thereby realizing the anti-drag protection of the charging gun body 1.

[0097] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A charging gun with a drag protection function, comprising a charging port (2) provided on a charging gun body (1) for connecting to a vehicle power port, and a conductive cable (5) provided at the end of the charging gun body (1), characterized in that: Also includes: A misalignment protection unit comprises a positioning ring (3) provided on a charging gun body (1), a pressing assembly provided on the positioning ring (3), a positioning assembly provided in the positioning ring (3), a positioning card (13) for positioning a power connection port and a charging port (2) provided in the positioning assembly, a misalignment mechanism for detecting misalignment provided in the positioning assembly, and unlocking and ejecting the charging gun body (1) after misalignment is achieved through the cooperation of the misalignment mechanism and the pressing assembly; The pressing assembly comprises a plurality of ejection spring rods (7) fixedly mounted on a positioning ring (3), a pressing ring (6) being fixedly mounted on the plurality of ejection spring rods (7), and the pressing ring (6) is pressed against the inner wall of the car charging box; The positioning assembly includes a push box (8) fixedly mounted in the positioning ring (3), a built-in groove (17) is provided in the push box (8), and a sliding pin block (15) is slidably mounted in the built-in groove (17), a connecting frame (21) is slidably mounted on the sliding pin block (15), and a follower plate (12) is fixedly mounted on the lower part of the connecting frame (21), and a positioning card plate (13) that matches the vehicle power port is fixedly mounted on the bottom of the follower plate (12), and a locking mechanism is installed between the sliding pin block (15) and the push box (8); The locking mechanism comprises an electric telescopic rod (16) fixedly mounted in the push box (8), and a positioning pin (19) is fixedly mounted on the driving end of the electric telescopic rod (16), a positioning hole (20) is provided in the sliding pin block (15), and the positioning hole (20) cooperates with the positioning pin (19), and a return spring (18) is fixedly mounted between the connecting frame (21) and the inner wall of the push box (8); The biasing mechanism includes two side contact plates (9), and the two side contact plates (9) are fixedly installed in the positioning ring (3) through multiple return springs (10), and the two side contact plates (9) are matched with the power connection port of the car, and a trigger mechanism is installed between each side contact plate (9) and the push box (8); The drag protection unit is arranged at the end of the charging gun body (1), and includes a locking assembly and a winding assembly, wherein the locking assembly is provided with a locking connection disk (30) conductively connected to the conductive cable (5), and the locking assembly is provided with a disconnection mechanism, and the winding assembly is provided with a winding rod (23) for winding the conductive cable (5). The winding rod (23) is driven to be retracted by the winding assembly, so that the conductive cable (5) automatically releases the buffer after being subjected to the drag force.

2. The charging gun with drag protection function according to claim 1, characterized in that: The charging gun body (1) is provided with a control handle that is easy to move, and the charging gun body (1) is provided with a conductive power-off indicator light for judging the charging status.

3. The charging gun with drag protection function according to claim 1, characterized in that: The trigger mechanism includes a linkage guide tube (11) fixedly mounted in the positioning ring (3), and piston member 1 (35) and piston member 2 (36) are slidably mounted on both ends of the linkage guide tube (11), and the linkage guide tube (11) is filled with hydraulic oil, and the end of the piston member 1 (35) is fixedly mounted on the side contact plate (9), and a trigger button (14) is fixedly mounted in the push box (8), and the trigger button (14) cooperates with the piston member 2 (36), and the trigger button (14) cooperates with the electric telescopic rod (16).

4. The charging gun with drag protection function according to claim 1, characterized in that: The locking assembly comprises a support frame (4) fixedly mounted on the end of a charging gun body (1), a fixing cylinder (22) fixedly mounted on the support frame (4), a locking box (25) fixedly mounted on the end of the charging gun body (1), and a locking connection disk (30) disposed in the locking box (25).

5. The charging gun with drag protection function according to claim 4, characterized in that: The winding assembly includes a winding rod (23) slidably mounted in a fixed cylinder (22) for winding a conductive cable (5), and a pull ring (24) is fixedly mounted on the winding rod (23), a connecting column is fixedly mounted at the end of the winding rod (23), and a push plate (26) is fixedly mounted on the connecting column, a retractable spring rod (27) for retracting the winding rod (23) is fixedly mounted between the connecting column and the inner wall of the fixed cylinder (22), two electromagnetic plates (29) are fixedly mounted on the push plate (26), and two electromagnetic plates (28) that match the corresponding electromagnetic plates (29) are fixedly mounted in the fixed cylinder (22).

6. The charging gun with drag protection function according to claim 5, characterized in that: The disconnect mechanism comprises a plurality of linkage frames (31) fixedly mounted on the conductive cable (5); a shear ring (32) is slidably mounted on the locking connection disk (30) via two push grooves (33); the shear ring (32) is fixedly connected to the plurality of linkage frames (31); a plurality of limiting shear pins (34) matched with the shear ring (32) are fixedly mounted on the locking connection disk (30); and a locking cover is provided on the top of the locking box (25).

7. A method for using a charging gun with a drag protection function, used for the charging gun with a drag protection function according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. When using this charging gun, insert the charging port (2) on the charging gun body (1) into the power port in the car charging box to complete the charging connection; S2, when charging is connected, the pressing component is compressed, and the charging port (2) and the power port are locked by the positioning component; S3. During the charging process, the offset mechanism is used to detect the offset of the charging gun body (1). When a large side force offset is detected, the charging gun body (1) is automatically unlocked and ejected through the cooperation of the offset mechanism and the pressing component. S4. If the conductive cable (5) is subjected to a large drag force during the charging process, the winding assembly will automatically release for preliminary buffering; S5. When the buffer strength is insufficient, the conductive connection between the conductive cable (5) and the locking connection plate (30) is automatically released through the disconnection mechanism in the locking assembly, thereby completing the disconnection and disconnection between the charging gun body (1) and the conductive cable (5), thereby achieving anti-drag protection for the charging gun body (1).

Images