Mechanical charger gun line power assisting device

Abstract

The utility model discloses a mechanical charger gun line power assisting device which comprises a base used for being installed on the top of charging equipment, a mechanical arm installed on the side edge of the base, a door closer installed in the base and a gun line hanging structure used for hanging a gun line, and the mechanical arm comprises a main arm and an extension arm which can rotate on the same horizontal plane. The main arm is rotationally connected with the side edge of the base, the door closer drives the main arm to rotate, and the extension arm is rotationally connected with the main arm and provided with a damping springback device to control the default opening angle of the extension arm. The device does not occupy too much space; the gun line does not shake disorderly, and meanwhile, a user is not easily hurt by shaking of the mechanical arm; when the main arm is closed, the extension arm can conveniently hang a gun line on the side surface of the charging equipment; after the main arm is opened, when the angle or the length of the gun line needs to be adjusted, a user can pull the gun line to pull the gun line hanging structure to drive the extension arm to rotate, so that the effective length of the whole mechanical arm is prolonged, a larger application range is provided, and operation is very convenient.

Description

Technical Field

[0001] This utility model relates to the field of automobile charging, and in particular to a mechanical charging gun cable assist device. Background Technology

[0002] Currently, the requirements for user experience and cable protection in car charging stations are becoming increasingly stringent, and traditional cable balancer or boom-type systems are showing signs of problems. Cable balancer systems generally have excessive torque, making it difficult to adjust. This requires more force from the user, and the tension from the balancer can pull on the charging dock, causing wear and tear or even damage. While boom-type systems don't have this problem, they limit the use of long cables. The boom length restricts the charging station's usability, and in strong winds or typhoons, the boom sways, preventing users from charging or risking the charging head being thrown off, potentially causing injury and posing a safety hazard.

[0003] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a mechanical charging gun cable assist device to address the above-mentioned deficiencies of the prior art.

[0005] The technical solution adopted by this utility model to solve its technical problem is: to construct a mechanical charging gun line assist device, including: a base for mounting on the top of the charging equipment, a mechanical arm mounted on the side of the base, a door closer mounted in the base, and a gun line mounting structure for mounting the charging gun. The mechanical arm includes a main arm and an extension arm that can rotate on the same horizontal plane.

[0006] The main arm is arranged along the side of the base, and the first end of the main arm is rotatably connected to the side of the base. The door closer is connected to the main arm to drive the main arm to perform a first rotational movement according to whether it is charging or not. The main arm opens and closes relative to the side of the base based on the first rotational movement.

[0007] The extension arm is rotatably connected to the second end of the main arm and is equipped with a damping rebound device to control the extension arm to self-reset to the default opening angle relative to the main arm. The gun wire mounting structure is installed at the end of the self-resetting extension arm away from the main arm to drive the extension arm to perform a second rotational movement after being subjected to force. The extension arm increases the opening angle with the main arm based on the second rotational movement, thereby extending the effective length of the robotic arm and expanding the usable angle range of the robotic arm.

[0008] Furthermore, in the mechanical charging gun cable assist device of this utility model, the waist position between the first end and the second end of the main arm is connected to the door closer via a rotary guide arm assembly. The rotary guide arm assembly is used to realize the conversion between the rotational movement of the door closer and the opening and closing of the main arm. When the door closer is closed, the main arm closes to the side of the base. When the door closer is opened, the main arm opens to form an angle with the corresponding side of the base.

[0009] Furthermore, in the mechanical charging gun line assist device of this utility model, the rotating guide arm assembly includes multiple rocker arms connected end to end, and the rocker arms connected to each other are rotatably connected. The first end of the first rocker arm is connected to the rotating shaft of the door closer, and the last end of the rocker arm is connected to the waist position of the main arm.

[0010] When the door closer is closed, the rotary guide arm assembly folds inside the base and pulls the main arm to close to the side of the base; when the door closer is opened, the rotary guide arm assembly extends out of the side of the base and pushes the main arm to open away from the corresponding side of the base.

[0011] Furthermore, in the mechanical charging gun cable assist device of this utility model, the side of the base includes a side plate, the main arm is in close contact with the side plate when closed, and a buffer pad for buffering the impact of the main arm is installed on the side plate.

[0012] Furthermore, in the mechanical charging gun cable assist device of this utility model, a slit extending along its length is provided on the side plate, and the rotary guide arm assembly is located inside the base and extends out from the slit to connect with the main arm.

[0013] Furthermore, in the mechanical charging gun cable assist device of this utility model, the base is provided with a first mounting ear pair corresponding to the main arm. The first mounting ear pair is composed of two first mounting ears facing each other vertically. The first end of the main arm forms a first rotating shaft. The first rotating shaft is located between the two first mounting ears facing each other vertically and is connected to the two first mounting ears in series through a first pin.

[0014] The second end of the main arm is provided with a second mounting ear pair corresponding to the extension arm. The second mounting ear pair is composed of two second mounting ears facing each other vertically. The end of the extension arm is formed with a second rotating shaft. The second rotating shaft is located between the two second mounting ears facing each other vertically and is connected to the two second mounting ears in series through a second pin.

[0015] Furthermore, in the mechanical charging gun cable assist device of this utility model, both the first pin and the second pin are grooved pins with slotted openings and retaining rings; the two first mounting ears / second mounting ears are restricted between the end cap of the grooved pin and the corresponding retaining ring.

[0016] Furthermore, in the mechanical charging gun cable assist device of this utility model, the damping rebound device is sleeved on the second rotating shaft, one end of the damping rebound device is fixed on the main arm, and the other end is fixed on the second rotating shaft and rotates with the second rotating shaft.

[0017] Furthermore, in the mechanical charger gun cable assist device of this utility model, the gun cable mounting structure includes a retaining ring, a universal retaining ring, and a gun cable clamp that can be clamped outside the charger gun cable; the retaining ring is fixed to the bottom of the extension arm, the universal retaining ring is hooked onto the retaining ring, and the gun cable clamp is mounted on the bottom of the universal retaining ring.

[0018] Furthermore, in the mechanical charging gun cable assist device of this utility model, the base is a rectangular box that matches the top of the charging device, and the mechanical arms are installed on both sides of the base corresponding to the left and right sides of the charging device.

[0019] This utility model's mechanical charging cable assist device has the following advantages: The robotic arm includes a rotatable main arm and a rotatable extension arm. The cable mounting structure is installed on the end of the extension arm away from the main arm. A door closer controls the opening and closing of the main arm according to the charging status. The door closer controls the position of the main arm, thus preventing it from wobbling. Furthermore, a damping rebound device normally controls the extension arm to self-reset to its default opening angle relative to the main arm, providing a certain damping feel to prevent the cable from swaying and better serving the user. Therefore, there is no need to worry about the robotic arm shaking and potentially injuring the user. Normally, the main arm can be retracted and closed to the side of the base. When charging is required, the main arm can be opened, thus not occupying too much space. When the main arm is closed, the extension arm can be easily hung on the side of the charging device. After the main arm is open, when adjusting the cable angle or length, the user can pull the cable holder, which in turn pulls the cable mounting structure to rotate the extension arm, thereby extending the effective length of the entire robotic arm and providing a wider range of use. Operation is very convenient. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the charging state of the mechanical charging gun cable assist device of this utility model;

[0022] Figure 2 This is a schematic diagram of the mechanical charging gun cable assist device of this utility model when it is not charging;

[0023] Figure 3 This is an exploded view of the mechanical charging gun cable assist device of this utility model;

[0024] Figure 4 This is the assembly principle diagram of the robotic arm;

[0025] Figure 5 These are three views of the mechanical charging gun cable assist device of this utility model when it is not charging;

[0026] Figure 6 This is a three-view diagram of the main arm rotating and opening during charging of the mechanical charging gun wire assist device of this utility model.

[0027] Figure 7 This is a three-view diagram of the extension arm rotating and opening during charging of the mechanical charging gun cable assist device of this utility model.

[0028] Figure 8 This is a schematic diagram of a damping rebound device;

[0029] Figure 9 This is a schematic diagram of the mechanical charger gun cable assist device of this utility model installed on the charging equipment;

[0030] The following are the labeling elements in the figure:

[0031] 100. Front side of the charging device; 200. Right side of the charging device;

[0032] 1. Base; 11. Side panel; 110. Gap; 111. Buffer pad; 12. Cover plate; 13. First mounting ear;

[0033] 2. Robotic arm; 21. Main arm; 211. First pivot; 212. Second mounting lug; 22. Extension arm; 221. Second pivot;

[0034] 3. Gun wire mounting structure; 31. U-shaped stainless steel retaining ring; 32. Universal retaining ring; 33. Gun wire clamp;

[0035] 4. Rotary guide arm assembly;

[0036] 5. Door closer;

[0037] 6. Eye bolts with spring washers;

[0038] 7. Damping rebound device;

[0039] 81. First pin 81; 82. Second pin 82; 83-84. Open-ended retaining ring. Detailed Implementation

[0040] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. The drawings illustrate typical embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. It should be understood that the embodiments of this utility model and the specific features thereof are detailed descriptions of the technical solutions of this application, and not limitations thereof. Where there is no conflict, the embodiments of this utility model and the technical features thereof can be combined with each other.

[0041] refer to Figure 9 The application scenario of this utility model's mechanical charging gun cable assist device is that the device is installed on the top of the charging equipment (cabinet). Figure 9 (a) shows the state when not charging, and (b) shows the state when charging. The charging cable is omitted in the diagram; only the state of the mechanical charger's cable assist device is shown. In the diagram, 100 represents the front of the charging device, i.e., the side facing the user, and 200 represents the right side of the charging device.

[0042] refer to Figure 1-4 The mechanical charging gun cable assist device of this utility model includes: a base 1 for mounting on the top of the charging equipment, a mechanical arm 2 mounted on the side of the base 1, a door closer 5 mounted in the base 1, and a charging gun cable mounting structure 3 for hanging the charging gun cable. The mechanical arm 2 includes a main arm 21 and an extension arm 22. It can be understood that although the extension arm 22 shown in this embodiment is much shorter than the main arm 21, the actual lengths of the main arm 21 and the extension arm 22 can be designed according to actual needs, and the relationship between their lengths is not limited.

[0043] In this embodiment, the base 1 is the base of the entire device, which can fix the door closer 5 and the charging device. The base 1 is a rectangular box that matches the top of the charging device, that is, its length and width are approximately the same as the top of the charging device. Since each charging device is usually equipped with two charging guns in the art, in this embodiment, the robotic arms 2 are installed on both sides of the base 1 corresponding to the left and right sides of the charging device, and each robotic arm 2 corresponds to one charging gun.

[0044] The main arm 21 is disposed along the side of the base 1, and its first end (i.e., the front end, i.e., the end closest to the front side 100 of the charging device) is rotatably connected to the front side of the base 1. The door closer 5 is connected to the cabinet power signal switch and can rotate its rotating shaft clockwise or counterclockwise according to the signal from the cabinet. The door closer 5 opens during charging and closes when not charging. The door closer 5 is also connected to the main arm 21 to drive the main arm 21 to perform a first rotational movement based on whether charging is in progress. The main arm 21 opens and closes relative to the side of the base 1 based on this first rotational movement.

[0045] Combination Figure 1 , 3 The base 1 includes a rectangular bottom box and a rectangular top cover 12. The top cover 12 of the base 1 is assembled with the bottom box using four screws. The top cover 12 provides protection against rain, falling leaves, and falling stones. The bottom wall of the bottom box is fixed to the top of the charging equipment using eye bolts 6 with spring washers. The eye bolts 6 connect the device and the cabinet in this embodiment, increasing its robustness and reliability. If lifting is required, the top cover 12 can be opened to lift the entire charging equipment. The door closer 5 is fixed inside the bottom box with screws. The left and right sides of the bottom box are side panels 11, and the main arm 21 is in close contact with the side panels 11 when closed.

[0046] To prevent the main boom 21 from colliding with the side plate 11 during closing, which could cause deformation or paint damage, and to prevent abnormal noise, a buffer pad 111 is installed on the side plate 11 to cushion the impact of the main boom 21. Specifically, the buffer pad 111 is a cylindrical rubber plug, which is compressed and fastened in the side plate 11 by an interference fit, specifically at the first end of the side plate 11 furthest from the main boom 21.

[0047] The extension arm 22 is rotatably connected to the second end (i.e., the rear end, or the end closer to the rear of the charging device) of the main arm 21, and can rotate on the same horizontal plane as the main arm 21. The cable mounting structure 3 is installed on the end of the self-resetting extension arm 22 away from the main arm 21. When subjected to force, the cable mounting structure 3 drives the extension arm 22 to perform a second rotational movement. Based on the second rotational movement, the extension arm 22 increases the opening angle with the main arm 21, thereby extending the effective length of the robotic arm 2 and expanding the usable angle range of the robotic arm. Here, the effective length can be understood as the straight-line distance between the two ends of the robotic arm 2, that is, the straight-line distance between the first end of the main arm 21 and the end of the extension arm 22 away from the main arm 21.

[0048] More specifically, see reference Figure 4The base 1 has a first mounting ear pair corresponding to the main arm 21 on its front side. The first mounting ear pair consists of two first mounting ears 13 facing each other vertically. The first end of the main arm 21 forms a vertical first rotating shaft 211, which is located between the two first mounting ears 13 and connected to them in series via a first pin 81. The second end of the main arm 21 has a second mounting ear pair corresponding to the extension arm 22. The second mounting ear pair consists of two second mounting ears 212 facing each other vertically. The end of the extension arm 22 forms a vertical second rotating shaft 221, which is located between the two second mounting ears 212 and connected to them in series via a second pin 82. In this embodiment, both the first pin 81 and the second pin 82 are grooved pins. One end of the grooved pin has an end cap, and the peripheral wall of the other end has an annular groove with an opening retaining ring 83 / 84. The two first mounting ears 13 / second mounting ears 212 are constrained between the end cap with the grooved pin and the corresponding open retaining rings 83 / 84.

[0049] like Figure 8 The extension arm 22 is also equipped with a damping rebound device 7 to control the extension arm 22 to self-reset to the default opening angle relative to the main arm 21. In this embodiment, the default opening angle is 90°, so that when the extension arm 22 is used to install the gun cable, the gun cable can be placed outside the cabinet. Specifically, the damping rebound device is sleeved on the second rotating shaft 221. One end of the damping rebound device 7 is fixed to the main arm 21, and the other end is fixed to the second rotating shaft 221 and rotates with the second rotating shaft 221.

[0050] In this embodiment, the waist position between the first and second ends of the main arm 21 is connected to the door closer 5 via a rotary guide arm assembly 4. A slit 110 extending along the length of the side plate 11 is provided. The rotary guide arm assembly 4 is located within the base 1 and extends out from the slit 110 to connect with the main arm 21. The rotary guide arm assembly 4 is used to switch between the rotational movement of the door closer 5 and the opening and closing of the main arm 21. When the door closer 5 is closed, the main arm 21 closes to the side of the base 1; when the door closer 5 is open, the main arm 21 opens to form an angle with the corresponding side of the base 1.

[0051] Specifically, the rotary guide arm assembly 4 includes multiple rocker arms connected end-to-end. The rocker arms are rotatably connected to each other. The first rocker arm is connected to the rotation axis of the door closer 5, and the last rocker arm is connected to the waist position of the main arm 21. In this embodiment, there are two rocker arms. When not charged, the door closer 5 rotates to close, and the rotary guide arm assembly 4 rotates with the rotation axis and folds inside the base 1, pulling the main arm 21 to close to the side of the base 1. When charging, the door closer 5 rotates to open, and the rotary guide arm assembly 4 rotates with the rotation axis and extends out of the side of the base 1, pushing the main arm 21 from the corresponding side position of the base 1 to open away from the corresponding side.

[0052] In this embodiment, the door closer 5 limits the rotation angle range of the main arm 21 to 0-145°. When the main arm 21 rotates 0°, it is in a closed state, and the angle between it and the left / right side plates of the base 1 is 0°. When the main arm 21 rotates 145°, it is in a fully open state, and the angle between it and the left / right side plates of the base 1 is 145°. The damping rebound device 7 limits the rotation angle range of the extension arm to 0-90°. When the extension arm rotates 0°, the angle between it and the main arm is at the default opening angle, which is 90°. When the extension arm rotates 90°, the angle between it and the main arm 21 is 180°. The main arm 21 and the extension arm 22 can be extended to a maximum of 145° and 90° respectively, which greatly increases the usability of the charging gun and increases the convenience for users to charge their devices.

[0053] refer to Figure 5-7 During charging, the charging device sends a signal to the door closer 5, which rotates clockwise / counterclockwise, thereby causing the main arm 21 to rotate from 0° to 145°. This process is the process from... Figures 5 to 6 During this process, the angle between the extension arm 22 and the main arm 21 is 90° by default. If the charging cable is insufficient, the user can pull the charging cable, and the cable mounting structure 3 will rotate the extension arm 22 from 0° (this refers to the rotation angle, not the included angle). When subjected to external force, the extension arm 22 rotates. Since one end of the damping rebound device 7 rotates with the extension arm 22, the damping rebound device 7 generates a damping rebound force due to the rotational displacement. Ultimately, due to the rebound force of the damping rebound device 7, it cannot continue to rotate and finally stops at 90°. At this time, the angle between the extension arm 22 and the main arm 21 is 180°. This process is from... Figures 6 to 7 The process. After the user finishes using it / or when there is no other external resistance, the damping rebound device 7, due to the damping rebound force, drives the extension arm 22 to return to the position 90° with the main arm, that is, to return to the starting position. Figure 6The charging device sends a signal to the door closer 5 after charging is complete. The door closer 5 will rotate counterclockwise / clockwise, thereby causing the main arm 21 to rotate and close to the side plate 11, that is, to reset to the desired state. Figure 5 The state.

[0054] Continue to refer to Figure 3 The charging cable mounting structure 3 includes a U-shaped stainless steel retaining ring 31, a universal retaining ring 32, and a charging cable clamp 33 that can be fastened to the charging cable. The retaining ring 31 includes a fixing plate and a U-shaped ring connected to the bottom of the fixing plate. The fixing plate is fixed to the bottom of the extension arm 22 by screws. The universal retaining ring 32 is hooked onto the U-shaped ring of the retaining ring 31 through an air opening. The charging cable clamp 33 is mounted on the bottom ring of the universal retaining ring 32. The universal retaining ring 32 allows for rotation of the charging cable in all directions, increasing the cable's installation range and protecting it from jamming, ensuring it always remains aligned with the user's charging direction. The charging cable clamp 33 secures the charging cable, preventing it from touching the ground and allowing for cable movement to meet user needs.

[0055] In summary, the mechanical charging gun cable assist device of this utility model has the following beneficial effects: The robotic arm includes a rotatable main arm and a rotatable extension arm. The gun cable mounting structure is installed at the end of the extension arm away from the main arm. A door closer controls the opening and closing of the main arm according to the charging status. The door closer controls the position of the main arm, thus preventing it from wobbling. Furthermore, the damping rebound device normally controls the extension arm to self-reset to its default opening angle relative to the main arm, providing a certain damping feel to prevent the gun cable from swaying and better serving the user. Therefore, there is no need to worry about the robotic arm shaking and potentially injuring the user. Normally, the main arm can be retracted and closed to the side of the base. When charging is required, the main arm can be opened, thus not occupying too much space. When the main arm is closed, the extension arm can easily hang the gun cable on the side of the charging device. After the main arm is open, when it is necessary to adjust the angle or length of the gun cable, the user can pull the cable holder, which in turn pulls the gun cable mounting structure to rotate the extension arm, thereby extending the effective length of the entire robotic arm and providing a wider range of use. Operation is very convenient.

[0056] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0058] The terms "first," "second," and other ordinal numbers used in this specification are used to describe various constituent elements, but these constituent elements are not limited by these terms. The purpose of using these terms is solely to distinguish one constituent element from others. For example, without departing from the scope of this utility model, a first constituent element may be named a second constituent element, and similarly, a second constituent element may be named a first constituent element.

[0059] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A mechanical charging gun cable assist device, characterized in that, include: A base for mounting on top of a charging device, a robotic arm mounted on the side of the base, a door closer mounted in the base, and a cable mounting structure for mounting the cable-retrieving device, wherein the robotic arm includes a main arm and an extension arm that can rotate in the same horizontal plane. The main arm is arranged along the side of the base, and the first end of the main arm is rotatably connected to the side of the base. The door closer is connected to the main arm to drive the main arm to perform a first rotational movement according to whether it is charging or not. The main arm opens and closes relative to the side of the base based on the first rotational movement. The extension arm is rotatably connected to the second end of the main arm and is equipped with a damping rebound device to control the extension arm to self-reset to the default opening angle relative to the main arm. The gun wire mounting structure is installed at the end of the self-resetting extension arm away from the main arm to drive the extension arm to perform a second rotational movement after being subjected to force. The extension arm increases the opening angle with the main arm based on the second rotational movement, thereby extending the effective length of the robotic arm and expanding the usable angle range of the robotic arm.

2. The mechanical charging gun cable assist device according to claim 1, characterized in that, The waist position between the first and second ends of the main arm is connected to the door closer via a rotary guide arm assembly. The rotary guide arm assembly is used to realize the conversion between the rotational movement of the door closer and the opening and closing of the main arm. When the door closer is closed, the main arm is closed to the side of the base. When the door closer is opened, the main arm and the corresponding side of the base open to form an angle.

3. The mechanical charging gun cable assist device according to claim 2, characterized in that, The rotary guide arm assembly includes multiple rocker arms connected end to end, and the rocker arms are rotatably connected to each other. The first rocker arm is connected to the rotation axis of the door closer, and the last rocker arm is connected to the waist position of the main arm. When the door closer is closed, the rotary guide arm assembly folds inside the base and pulls the main arm to close to the side of the base; when the door closer is opened, the rotary guide arm assembly extends out of the side of the base and pushes the main arm to open away from the corresponding side of the base.

4. The mechanical charging gun cable assist device according to claim 2, characterized in that, The base includes a side plate on its side, and the main arm is in close contact with the side plate when closed. A buffer pad for cushioning impacts to the main arm is installed on the outer side of the side plate.

5. The mechanical charging gun cable assist device according to claim 4, characterized in that, A slit extending along its length is provided on the side plate, and the rotary guide arm assembly is located inside the base and extends out from the slit to connect with the main arm.

6. The mechanical charging gun cable assist device according to claim 2, characterized in that, The base is provided with a first mounting ear pair corresponding to the main arm. The first mounting ear pair is composed of two first mounting ears facing each other vertically. The first end of the main arm forms a first rotating shaft. The first rotating shaft is located between the two first mounting ears facing each other vertically and is connected to the two first mounting ears in series through a first pin. The second end of the main arm is provided with a second mounting ear pair corresponding to the extension arm. The second mounting ear pair is composed of two second mounting ears facing each other vertically. The end of the extension arm is formed with a second rotating shaft. The second rotating shaft is located between the two second mounting ears facing each other vertically and is connected to the two second mounting ears in series through a second pin.

7. The mechanical charging gun cable assist device according to claim 6, characterized in that, Both the first and second pins are grooved pins with slotted openings and retaining rings; the two first / second mounting ears are constrained between the end cap of the grooved pin and the corresponding retaining ring.

8. The mechanical charging gun cable assist device according to claim 6, characterized in that, The damping rebound device is sleeved on the second rotating shaft. One end of the damping rebound device is fixed on the main arm, and the other end is fixed on the second rotating shaft and rotates with the second rotating shaft.

9. The mechanical charging gun cable assist device according to claim 1, characterized in that, The gun wire mounting structure includes a retaining ring, a universal retaining ring, and a gun wire clamp that can be fastened to the outside of the charger gun wire; the retaining ring is fixed to the bottom of the extension arm, the universal retaining ring is hooked onto the retaining ring, and the gun wire clamp is mounted on the bottom of the universal retaining ring.

10. The mechanical charging gun cable assist device according to claim 1, characterized in that, The base is a rectangular box that matches the top of the charging device, and the robotic arms are installed on both sides of the base that correspond to the left and right sides of the charging device.

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