Charging gun with dragging protection function and use method thereof

Abstract

The invention discloses a charging gun with a dragging protection function and a use method thereof, and relates to the technical field of charging guns. The charging gun comprises a charging port which is arranged on a charging gun main body and is used for being connected with an automobile power connection port, and a conductive cable is arranged at the end part of the charging gun main body; the dragging protection unit comprises a clamping and locking assembly and a winding assembly, and a clamping and locking connecting disc in conductive connection with the conductive cable is arranged in the clamping and locking assembly. The charging gun has the advantages that stable conductive connection of the charging gun can be achieved, disconnection and ejection between the charging gun and an automobile can be automatically achieved when the charging gun is subjected to large external transverse dragging force, the automobile and the charging gun can be effectively protected, and the charging gun is prevented from being damaged. And the disconnection between the conductive cable and the charging gun can be automatically realized according to the magnitude of the received dragging force, so that the automobile or the charging pile can be prevented from being damaged due to the external dragging force, and effective dragging protection is realized.

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 use method thereof. Background Art

[0002] The charging gun refers to a device used to charge new energy vehicles. When charging, the charging gun is usually locked and can only be pulled out after the owner automatically unlocks it. If the charging gun is violently dragged by the outside world during charging, the charging gun cannot be disengaged due to the lock, making the charging gun vulnerable to damage by the drag force. Therefore, a new type of charging gun with drag protection function needs to be designed;

[0003] Existing charging guns use a variety of methods to achieve drag protection during charging, such as an anti-drag intelligent temperature and humidity control charging gun with publication number CN117317686B, including a charging gun housing; a charging part, the charging part including a charging wire fixedly installed in the charging gun housing, a protective cover fixedly installed on the charging gun housing, a charging port fixedly installed in the protective cover, and the charging port is fixedly connected to the charging wire, a protective ring sleeve matched with the charging wire is fixedly installed in the charging gun housing, including a positioning part, the positioning part includes a fixing plate fixedly installed on the charging gun housing, and a threaded rod is threadedly installed on the fixing plate;

[0004] The existing charging gun uses a reinforced fixed position to lock the charging port and the car power connection port, and ensures that the charging gun will not be separated when being dragged by strengthening the locking degree. This method makes it easy to cause dragging damage when the charging gun is subjected to a lateral drag force, so that the charging gun cannot be separated from the car. For example, the above-mentioned referenced prior art uses an adsorption positioning plate to adsorb and position to strengthen the connection strength between the charging gun and the car. When subjected to a large lateral drag force from the outside, the charging port of the charging gun and the car power connection port are easily damaged due to the lateral drag force. At the same time, the device does not perform unlocking protection when the conductive cable is subjected to a drag force, which has certain limitations;

[0005] Therefore, it is urgent 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, comprising a charging port provided on a charging gun body for connecting to a car power port, and a conductive cable is provided at the end of the charging gun body, and further comprising:

[0008] The offset protection unit comprises a positioning ring arranged on the charging gun body, and a pressing assembly is arranged on the positioning ring, a positioning assembly is arranged inside the positioning ring, and a positioning card plate for locating the power connection port and the charging port is arranged inside the positioning assembly, and a offset mechanism for detecting offset is arranged inside the positioning assembly, and unlocking and ejecting of the charging gun body after the offset is achieved through the cooperation of the offset mechanism and the pressing assembly;

[0009] The drag protection unit is arranged at the end of the charging gun body, and includes 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, and the locking assembly is provided with a disconnection mechanism for disconnecting the conductive cable, and the winding assembly is provided with a winding rod for winding the conductive cable. The winding rod is driven to be recovered 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 commonly fixedly mounted on the plurality of ejection spring rods, and the pressing ring is pressed and matched with 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 matching the car 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 comprises two side contact plates, and the two side contact plates are fixedly installed in the positioning ring through a plurality of 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 of the side contact plates 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 hydraulic oil is filled in the linkage guide tube. 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 a 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 contraction spring rod for recovering 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 cables, a shear ring is slidably mounted on the snap-fitting 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 matching the shear ring are fixedly mounted on the snap-fitting connection plate, and a snap-fitting 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 charging gun body is automatically unlocked and ejected through the cooperation of the offset mechanism and the pressing component.

[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. The invention has the following beneficial effects:

[0026] 1. When the charging gun with drag protection function is in use, the charging port on the charging gun body and the car power port can be quickly locked in place by using the positioning card plate, 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 offset between the charging port and the power connection port can be monitored in real time through the two side contact plates. 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 plate can be used to automatically trigger the offset mechanism, realize automatic pop-up of the charging gun body, release the connection of the charging gun body, and effectively protect the charging gun body.

[0028] 3. When the charging gun with drag protection function is in use, the conductive cable is initially protected by curling it. If the conductive cable is dragged to a lighter degree, the winding rod can be automatically retracted to complete the rewinding and release of the conductive cable, thereby increasing the stress level of the conductive cable and improving its ability to withstand 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 from affecting the car or the drag force of the car from 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 achieve the disconnection and ejection between the charging gun and 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 can automatically achieve the disconnection between the conductive cable and the charging gun according to the size 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.

[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 are further described in detail below in conjunction with 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 the positioning ring in the middle part;

[0036] Figure 4 for Figure 3 Schematic diagram of 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 A front view of

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

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

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

[0044] Fig.12 for Fig.11 A schematic diagram of the structure of the middle fixing cylinder and the locking box;

[0045] Fig.13 for Fig.12 Schematic diagram of the internal structure of the middle fixed cylinder;

[0046] Fig.14 for Fig.12 A schematic diagram of the structure of the conductive cable and the locking box;

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

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

[0049] Fig.17 for Fig.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 pressing 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 pushing 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 nail, 35 piston piece 1, 36 piston piece 2. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present invention will be described clearly and completely 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 car power port, wherein the car power port is provided in a car charging box, and the car power port is protected by the car 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 vehicle power connection port through the charging port 2, and the vehicle is charged through the vehicle power connection port.

[0054] The charging gun also includes:

[0055] The offset protection unit is arranged at the end of the charging gun body 1, and is used to lock the connection between the charging port 2 and the car power port, and automatically unlock the charging gun body 1 and the car when the charging gun body 1 is subjected to a large degree of lateral dragging external force, and automatically pop up the charging gun body 1, thereby effectively protecting the charging gun body 1 and the car 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 realize automatic disconnection between the conductive cable 5 and the charging gun body 1 by releasing the winding and automatically disconnecting. Then, drag protection is performed by disconnecting, so as to avoid the drag force affecting the car or the charging pile, and achieve 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 offset protection unit includes a positioning ring 3 arranged on the charging gun body 1, and a pressing component is arranged 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 is pressed 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 connection port in the car charging box. The charging connection is completed when the charging port 2 and the power connection port are snap-connected.

[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 ejector spring rods 7 during the gradual insertion process until the full insertion and engagement are completed. At this time, the multiple ejector 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 plate 13 for positioning the power connection port and the charging port 2 is provided in the positioning assembly;

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

[0064] Before inserting the charging port 2, first push up the sliding pin block 15 to make it slide upward in the built-in groove 17, and then drive the follower plate 12 and the positioning card plate 13 to slide upward through the connecting frame 21, so that the positioning card plate 13 slides into the push box 8 for storage, and then push the charging gun body 1 to drive the charging port 2 to move 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 pushing 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), thereby pushing 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 at 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, and 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, and a positioning hole 20 is opened in the sliding pin block 15, and the positioning hole 20 matches 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 connection port can be positioned and fixed again, 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 unlocking and ejection of the charging gun body 1 after deflection is achieved through the cooperation between the deflection mechanism and the pressing assembly;

[0069] 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;

[0070] After the vehicle 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 tilting, so that the side contact plates 9 will move.

[0071] The trigger mechanism includes a linkage guide tube 11 fixedly installed in the positioning ring 3, and piston member 1 35 and piston member 2 36 are slidably installed at 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 installed on the side contact plate 9, and a trigger button 14 is fixedly installed 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;

[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 to start.

[0073] When the trigger button 14 is triggered, the electric telescopic rod 16 will be controlled to move, thereby driving the positioning pin 19 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 limited 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 the automatic separation of the charging port 2 and the power port, so that when the charging gun body 1 is subjected to a large lateral drag force, it will automatically break away from the contact charging state with the car, that is, when subjected to a drag force, the lock will be released to avoid 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 Figure 11-Figure 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 which 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 under normal conditions, 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 is fixedly mounted on the support frame 4, a locking box 25 is fixedly mounted on the end of the charging gun body 1, and a locking connection plate 30 is arranged in the locking box 25;

[0077] A disconnection mechanism for disconnecting the conductive cable 5 is provided in the locking assembly, and 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 disk 30 through two push grooves 33, and the shear ring 32 is fixedly connected to the plurality of linkage frames 31, a plurality of limiting shear pins 34 matching 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;

[0078] When the conductive cable 5 is subjected to a large degree of dragging force, the external force pulls the conductive cable 5 to apply 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 multiple limit shear nails 34. If the dragging force is insufficient, the limit shear nails 34 will not be cut off, and the conductive cable 5 can be effectively protected. If the dragging force is large, the limit 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 disk 30 when sliding, and the locking cover is opened 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 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, avoiding the drag force generated by the car directly acting on the charging pile through the conductive cable 5, and thus protecting the charging pile from dragging, avoiding 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 recovered by the winding assembly, so that the conductive cable 5 automatically releases the buffer after being subjected to the dragging 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 contraction spring rod 27 for recovering 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 matched 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 tube 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, and 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 relatively small dragging force, the electromagnetic plate 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, so that when it is subjected to a relatively small external dragging force, the overall force-bearing length can be increased for preliminary buffering, thereby achieving preliminary dragging protection.

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

[0085] After the vehicle 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 tilting action, so that the side contact plates 9 will 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 to start.

[0087] When the trigger button 14 is triggered, the electric telescopic rod 16 will be controlled to move, thereby driving the positioning pin 19 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 limited 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 the automatic separation of the charging port 2 and the power port, so that when the charging gun body 1 is subjected to a large lateral drag force, it will automatically break away from the contact charging state with the car, that is, when subjected to a drag force, the lock will be released to avoid 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 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, so that when it is subjected to a small external drag force, the overall force-bearing length can be increased for 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 to apply 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 multiple limit shear nails 34. If the dragging force is insufficient, the limit shear nails 34 will not be cut off, and the conductive cable 5 can be effectively protected. If the dragging force is large, the limit 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 disk 30 when sliding, and the locking cover is opened 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 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, avoiding the drag force generated by the car directly acting on the charging pile through the conductive cable 5, and thus protecting the charging pile from dragging, avoiding the charging pile from being pulled down by the conductive cable 5 and causing greater danger.

[0091] The 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, and includes the following steps:

[0092] S1. When using the 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 charging gun body 1 is automatically unlocked and ejected through the cooperation of the offset mechanism and the pressing component.

[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 between 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 implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A charging gun with a drag protection function, comprising a charging port (2) arranged on a charging gun body (1) for connecting to a power port of a car, and a conductive cable (5) is arranged at the end of the charging gun body (1), characterized in that: Also includes: The misalignment protection unit comprises a positioning ring (3) arranged on a charging gun body (1), and a pressing assembly is arranged on the positioning ring (3), a positioning assembly is arranged inside the positioning ring (3), and a positioning card (13) for locating a power connection port and a charging port (2) is arranged inside the positioning assembly, and a misalignment mechanism for detecting misalignment is arranged inside the positioning assembly, and unlocking and ejecting of the charging gun body (1) after misalignment is achieved through the cooperation of the misalignment mechanism and the pressing assembly; A drag protection unit is arranged at the end of a charging gun body (1), and comprises a locking assembly and a winding assembly, wherein a locking connection disk (30) conductively connected to a conductive cable (5) is arranged in the locking assembly, and a disconnection mechanism is arranged in the locking assembly, and a winding rod (23) for winding the conductive cable (5) is arranged in the winding assembly, and the winding rod (23) is driven to be recovered by the winding assembly, so that the conductive cable (5) automatically releases the buffer after being subjected to a 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 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.

4. The charging gun with drag protection function according to claim 3, characterized in that: The positioning assembly comprises a push box (8) fixedly mounted in a positioning ring (3), a built-in groove (17) being provided in the push box (8), a sliding pin block (15) being slidably mounted in the built-in groove (17), a connecting frame (21) being slidably mounted on the sliding pin block (15), a follower plate (12) being fixedly mounted at the lower part of the connecting frame (21), a positioning card plate (13) matching with a vehicle power connection port being fixedly mounted at the bottom of the follower plate (12), and a locking mechanism being mounted between the sliding pin block (15) and the push box (8).

5. The charging gun with drag protection function according to claim 4, characterized in that: The locking mechanism comprises 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) matches the positioning pin (19), and a return spring (18) is fixedly installed between the connecting frame (21) and the inner wall of the push box (8).

6. The charging gun with drag protection function according to claim 5, characterized in that: The deflection mechanism comprises two side contact plates (9), and the two side contact plates (9) are fixedly installed in the positioning ring (3) through a plurality of return springs (10), and the two side contact plates (9) are matched with the power connection port of the vehicle, and a trigger mechanism is installed between each side contact plate (9) and the push box (8); The trigger mechanism comprises a linkage guide tube (11) fixedly mounted in a positioning ring (3), and piston member 1 (35) and piston member 2 (36) are slidably mounted at both ends of the linkage guide tube (11), and hydraulic oil is filled in the linkage guide tube (11), and the end of the piston member 1 (35) is fixedly mounted on a 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).

7. 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).

8. The charging gun with drag protection function according to claim 7, characterized in that: The winding assembly comprises 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 pushing plate (26) is fixedly mounted on the connecting column, a contraction spring rod (27) for recovering 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 pushing plate (26), and two electromagnetic plates (28) that match the corresponding electromagnetic plates (29) are fixedly mounted in the fixed cylinder (22).

9. The charging gun with drag protection function according to claim 8, characterized in that: The disconnection 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 plate (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 plate (30); and a locking cover is arranged on the top of the locking box (25).

10. A method for using a charging gun with a drag protection function, used for the charging gun with a drag protection function as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. When using the charging gun, the charging port (2) on the charging gun body (1) is inserted into the power connection port in the car charging box to complete the charging connection; S2, when charging is connected, the pressing component will be compressed, and the charging port (2) and the power connection port will be 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 charging, 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 between the charging gun body (1) and the conductive cable (5), thereby achieving anti-drag protection for the charging gun body (1).

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