A fixing structure for a DC charging gun

Abstract

This invention discloses a fixing structure for a DC charging gun, relating to the technical field of charging gun fixing equipment. It includes a charging mounting base and a control device mounted on the charging mounting base. A protective box is fixedly mounted on the charging mounting base, and the protective box has a receiving cavity for accommodating the charging gun. A rotating shaft is rotatably mounted on the protective box, and a charging base is fixedly mounted on the rotating shaft. Two sets of symmetrically arranged drive mechanisms are arranged inside the protective box. A fixing mechanism for fixing the charging gun handle is also provided on the protective box, and a winding mechanism for winding the charging cable is provided on the charging mounting base. This device, by incorporating drive mechanisms, allows the charging gun to rotate 90 degrees around the axis of the rotating shaft when connected to the charging base. This ensures the charging gun rests flat within the receiving cavity, preventing the charging gun handle from extending beyond the protective box and avoiding accidental detachment from the charging base.

Description

Technical Field

[0001] This invention relates to the field of charging gun fixing equipment technology, and more particularly to a fixing structure for a DC charging gun. Background Technology

[0002] With the rapid development of new energy vehicles, DC charging guns are key components connecting charging piles and vehicles. Their connection stability directly affects the safety and efficiency of the charging process. DC charging guns need to be stably connected to the vehicle charging base during charging, and the fixing structure is an important support to ensure this connection. If the fixing structure is not designed properly, the charging gun may become loose or even detach during the charging process, which may not only affect the charging progress but also cause safety hazards such as electric shock and short circuit.

[0003] Currently, the common DC charging gun fixing structures on the market have significant defects. Most existing fixing structures can only achieve simple placement or clamping of the charging gun, and cannot adjust the posture of the charging gun. When the charging gun is connected to the charging base, the charging gun handle often exceeds the protection box due to its length. In the scenario of using charging piles in public places, people walking, vehicles parking, or other objects may accidentally hit the charging gun handle that exceeds the protection box. Such accidental impacts can easily cause the connection between the charging gun and the charging base to loosen, and in severe cases, directly cause the two to detach, interrupting the charging process. Repeated impacts may also damage the interface components of the charging gun, reduce the service life of the equipment, and increase maintenance costs. In addition, if the connection is not handled in time after detachment, the exposed charging interface may also cause malfunctions due to water or dust ingress, further affecting the safety of the charging equipment. With the increase in the number of new energy vehicles, the frequency of charging gun use has increased significantly, and the impact of such problems on the charging experience and safety has become increasingly prominent, so improvements are urgently needed. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a fixing structure for a DC charging gun, which aims to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A fixing structure for a DC charging gun includes a charging mounting base and a control device fixedly mounted on the charging mounting base. The charging mounting base has mounting holes at its four corners. A protective box is fixedly mounted on the charging mounting base, and a battery is fixedly mounted inside the protective box. A receiving cavity for accommodating the charging gun is provided on the surface of the protective box away from the charging mounting base. A rotating shaft is rotatably mounted on the protective box, and a charging base is fixedly mounted on the rotating shaft. Two sets of symmetrically arranged drive mechanisms are provided inside the protective box. A placement groove is provided on the protective box, and two symmetrically arranged internal slots are provided within the placement groove. A fixing mechanism for fixing the charging gun handle is provided on the protective box, and a winding mechanism for winding up the charging cable is provided on the charging mounting base.

[0007] Preferably, the drive mechanism includes:

[0008] A fixing block is fixedly installed inside the protective box, and a horizontal sliding groove is provided on the fixing block;

[0009] A drive unit is mounted on the fixed block and electrically connected to the control device;

[0010] A transmission unit is disposed inside the protective box, and the transmission unit is used to cooperate with the drive unit to drive the rotating shaft to rotate.

[0011] Preferably, the driving unit includes:

[0012] The first motor is fixedly mounted on the fixed block and electrically connected to the control device.

[0013] The drive screw is located in the transverse sliding groove, and the end of the drive screw closer to the first motor is fixedly connected to the output end of the first motor, while the end of the drive screw away from the first motor is rotatably connected to the fixed block.

[0014] The horizontal slider is slidably disposed within the horizontal sliding groove and is threadedly connected to the drive screw.

[0015] Preferably, the transmission unit includes:

[0016] The limiting rod is fixedly installed inside the protective box;

[0017] The toothed plate is slidably disposed on the limiting rod, and the surface of the toothed plate near the horizontal slider is fixedly connected to the horizontal slider.

[0018] An auxiliary spring is sleeved on the limiting rod, and the auxiliary spring is always in a compressed state.

[0019] A drive shaft is fixedly mounted at the end of the rotating shaft, and a drive gear is fixedly mounted at the end of the drive shaft away from the rotating shaft. The drive gear meshes with the gear plate.

[0020] Preferably, the fixing mechanism includes:

[0021] The device has two built-in blocks, and the two built-in blocks are slidably disposed in the two built-in slots respectively;

[0022] A reset spring is located in the built-in groove, and both ends of the reset spring are fixedly connected to the protective box and the built-in block respectively. The reset spring is always in a compressed state.

[0023] The contact portion has two sets, and the two sets of contact portions are respectively disposed on the two built-in blocks. The two contact portions are used to fix the charging gun handle placed in the placement slot.

[0024] Preferably, the contact portion includes:

[0025] The U-shaped plate is fixedly installed on the built-in block;

[0026] The axle is rotatably mounted on the U-shaped plate;

[0027] The contact wheel is fixedly sleeved on the axle, and in the initial state, the contact wheels in the two contact parts abut against each other.

[0028] Preferably, the winding mechanism includes:

[0029] There are two fixing plates, and the two fixing plates are symmetrically arranged on the charging fixing base;

[0030] The main rotating part is mounted on any one of the fixed plates;

[0031] A secondary rotating part is mounted on a fixed plate away from the main rotating part. The secondary rotating part is used to cooperate with the main rotating part to realize the charging gun's cable feeding and retracting.

[0032] The power unit is mounted on the main rotating part and is electrically connected to the control device.

[0033] Preferably, the main rotating part includes:

[0034] The main shaft is rotatably mounted on any fixed plate.

[0035] The main rotating roller is fixedly mounted on the main rotating shaft, and the axis of the main rotating roller coincides with the axis of the main rotating shaft. A shaft groove is formed in the middle of the end face of the main rotating roller away from the main rotating shaft, and the axis of the shaft groove coincides with the axis of the main rotating roller. A power groove is formed in the end face of the main rotating roller away from the main rotating shaft.

[0036] Preferably, the auxiliary rotating part includes:

[0037] The secondary shaft is rotatably mounted on a fixed plate away from the main shaft;

[0038] A secondary rotating roller is fixedly mounted on the secondary rotating shaft. A shaft is fixedly mounted on the middle of the end face of the secondary rotating roller near the main rotating roller. The shaft is rotatably connected to the shaft groove. A driven gear is fixedly mounted on the shaft.

[0039] A shaft cover is fitted onto the auxiliary roller, and one end of the shaft cover is rotatably connected to the surface of the main roller.

[0040] Preferably, the power unit includes:

[0041] The second motor is fixedly installed in the power slot and electrically connected to the control device;

[0042] A support plate is fixedly mounted at the output end of the second motor;

[0043] An electric push rod is fixedly mounted on the support plate, and the axis of the electric push rod coincides with the axis of the support plate. The electric push rod is electrically connected to the control device.

[0044] A connecting rod is fixedly disposed at the end of the electric push rod away from the bearing plate, and a drive gear is fixedly connected to the end of the connecting rod away from the electric push rod, the drive gear meshing with the driven gear.

[0045] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0046] This device is equipped with a drive mechanism, which allows the charging gun to rotate 90 degrees around the axis of rotation when it is connected to the charging base. This allows the charging gun to be placed flat in the receiving cavity, thus preventing the handle of the charging gun from extending beyond the protective box when it is connected to the charging base, and preventing the handle of the charging gun from being accidentally knocked off the connection with the charging base.

[0047] This device is equipped with a winding mechanism, which allows the device to automatically rewind the stretched charging cable after use, eliminating the need for manual winding and preventing damage to the charging cable, thus extending the lifespan of the charging gun to some extent. Attached Figure Description

[0048] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 A three-dimensional structural diagram of the fixing structure of a DC charging gun is shown.

[0050] Figure 2 A front view of the mounting structure of a DC charging gun is shown.

[0051] Figure 3 It shows Figure 2 Sectional view of AA.

[0052] Figure 4 It shows Figure 2 A cross-sectional view of BB.

[0053] Figure 5 It shows Figure 4 A magnified schematic diagram of the local structure at point A.

[0054] Figure 6 A side view of the fixed structure of a DC charging gun is shown.

[0055] Figure 7 This diagram shows a three-dimensional structural schematic of the fixed structure of a DC charging gun from another perspective.

[0056] Figure 8 A cross-sectional view of a portion of the fixed structure of a DC charging gun is shown.

[0057] Legend:

[0058] 1. Charging base; 2. Control device; 3. Mounting hole; 4. Protective box; 5. Battery; 6. Receiving cavity; 7. Rotating shaft; 8. Charging base; 9. Placement slot; 10. Internal slot; 11. Fixing block; 12. Horizontal sliding slot; 13. First motor; 14. Drive screw; 15. Horizontal slider; 16. Limiting rod; 17. Toothed plate; 18. Auxiliary spring; 19. Transmission shaft; 20. Transmission gear; 21. Internal block; 22. Return spring; 23. U-shaped plate; 24. Wheel axle; 25. Contact wheel; 26. Fixing plate; 27. Main rotating shaft; 28. Main rotating roller; 29. ​​Shaft groove; 30. Power groove; 31. Secondary rotating shaft; 32. Secondary rotating roller; 33. Insert shaft; 34. Driven gear; 35. Shaft cover; 36. Second motor; 37. Bearing plate; 38. Electric push rod; 39. Connecting rod; 40. Driving gear. Detailed Implementation

[0059] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0061] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0063] Reference Figures 1 to 8 The following is a further description of an embodiment of the fixing structure of a DC charging gun according to the present invention.

[0064] A fixing structure for a DC charging gun includes a charging mounting base 1 and a control device 2 fixedly mounted on the charging mounting base 1. The charging mounting base 1 has mounting holes 3 at its four corners, allowing operators to install and fix the charging mounting base 1 in the corresponding areas. A protective box 4 is fixedly mounted on the charging mounting base 1, and a battery 5 is fixedly mounted inside the protective box 4. A receiving cavity 6 for accommodating the charging gun is provided on the surface of the protective box 4 away from the charging mounting base 1. A rotating shaft 7 is rotatably mounted on the protective box 4, and a charging base 8 is fixedly mounted on the rotating shaft 7. Two sets of symmetrically arranged drive mechanisms are provided inside the protective box 4. The drive mechanisms include:

[0065] A fixing block 11 is fixedly installed inside the protective box 4, and a horizontal sliding groove 12 is provided on the fixing block 11;

[0066] The drive unit, mounted on the fixed block 11 and electrically connected to the control device 2, includes:

[0067] The first motor 13 is fixedly mounted on the fixed block 11 and electrically connected to the control device 2;

[0068] The drive screw 14 is located in the transverse sliding groove 12, and the end of the drive screw 14 near the first motor 13 is fixedly connected to the output end of the first motor 13, while the end of the drive screw 14 away from the first motor 13 is rotatably connected to the fixed block 11.

[0069] The horizontal slider 15 is slidably disposed in the horizontal slide groove 12 and threadedly connected to the drive screw 14.

[0070] The transmission unit, housed within the protective housing 4, cooperates with the drive unit to rotate the rotating shaft 7. The transmission unit includes:

[0071] Limiting rod 16 is fixedly installed inside the protective box 4;

[0072] The toothed plate 17 is slidably disposed on the limiting rod 16, and the surface of the toothed plate 17 near the horizontal slider 15 is fixedly connected to the horizontal slider 15.

[0073] An auxiliary spring 18 is sleeved on the limiting rod 16, and the auxiliary spring 18 is always in a compressed state.

[0074] The drive shaft 19 is fixedly installed at the end of the rotating shaft 7. A drive gear 20 is fixedly installed at the end of the drive shaft 19 away from the rotating shaft 7. The drive gear 20 meshes with the gear plate 17.

[0075] In use, the charging gun is inserted into the charging base 8, and then the first motor 13 is started by the control device 2, which causes the drive screw 14, which is fixedly connected to the output end of the first motor 13, to rotate. Through the threaded transmission between the drive screw 14 and the horizontal slider 15, the horizontal slider 15 slides a certain distance in the horizontal sliding groove 12 (this distance is preset by the operator). The sliding of the horizontal slider 15 causes the toothed plate 17 set on the horizontal slider 15 to move, which in turn causes the transmission gear 20 meshing with the toothed plate 17 to rotate, which causes the transmission shaft 19, which is fixedly connected to the transmission gear 20, to rotate, which in turn causes the rotating shaft 7, which is fixedly connected to the transmission shaft 19, to rotate 90 degrees. This causes the charging base 8, which is fixedly connected to the rotating shaft 7, to rotate 90 degrees around the axis of the rotating shaft 7. At this time, the charging gun inserted into the charging base 8 also rotates 90 degrees around the axis of the rotating shaft 7, so that the handle of the charging gun rotates into the placement groove 9.

[0076] This device is equipped with a drive mechanism, which allows the charging gun to rotate 90 degrees around the axis of the rotating shaft 7 when the charging gun is connected to the charging base 8. This allows the charging gun to be placed flat in the receiving cavity 6, thereby preventing the handle of the charging gun from extending beyond the protective box 4 when the charging gun is connected to the charging base 8, and preventing the handle of the charging gun from being accidentally knocked off the connection with the charging base 8.

[0077] The protective box 4 is provided with a placement slot 9, and two symmetrically arranged internal slots 10 are opened in the placement slot 9. The protective box 4 is provided with a fixing mechanism for fixing the charging gun handle, and the fixing mechanism includes:

[0078] There are two built-in blocks 21, and the two built-in blocks 21 are respectively slidably disposed in the two built-in slots 10;

[0079] The reset spring 22 is located in the built-in groove 10, and its two ends are fixedly connected to the protection box 4 and the built-in block 21 respectively. The reset spring 22 is always in a compressed state.

[0080] The contact portion has two sets, and the two sets of contact portions are respectively disposed on two built-in blocks 21. The two contact portions are used to fix the charging gun handle placed in the placement slot 9. The contact portion includes:

[0081] U-shaped plate 23 is fixedly installed on built-in block 21;

[0082] A wheel axle 24 is rotatably mounted on a U-shaped plate 23;

[0083] The contact wheel 25 is fixedly sleeved on the axle 24. In the initial state, the contact wheels 25 in the two contact parts abut against each other. It should be noted that by setting the contact wheel 25, the handle of the charging gun can be rotated into the placement slot 9 more easily.

[0084] During the process of the charging gun handle rotating into the placement slot 9, the charging gun handle first contacts the contact wheels 25 on both sides. As the charging gun handle continues to rotate, the charging gun handle applies a force to the contact wheels 25 on both sides, thereby causing the contact wheels 25 to apply a force to the U-shaped plate 23 through the wheel axle 24, which in turn causes the U-shaped plate 23 to apply a force to the built-in block 21. The built-in block 21 slides in the built-in slot 10 towards the same-side return spring 22, thereby continuously compressing the same-side return spring 22 until the distance between the two U-shaped plates 23 is greater than the size of the charging gun handle. This allows the charging gun handle to rotate into the placement slot 9 through the two contact wheels 25. After the charging gun handle passes through the two contact wheels 25, the two contact wheels 25 lose their force, and the compressed return springs 22 on both sides release their elastic potential energy, thereby pushing the built-in blocks 21 on both sides closer to each other, thereby causing the two U-shaped plates 23 on both sides to approach each other, which in turn drives the two contact wheels 25 on both sides to approach each other, until the two contact wheels 25 return to the contacting state.

[0085] This device is equipped with a fixing mechanism, which enables it to limit and fix the handle of the charging gun when it is inserted into the placement slot 9, thereby further ensuring the stability of the connection between the charging gun and the charging base 8.

[0086] The charging mounting base 1 is equipped with a winding mechanism for winding up the power cord. The winding mechanism includes:

[0087] There are two fixing plates 26, and the two fixing plates 26 are symmetrically arranged on the charging fixing base 1;

[0088] The main rotating part is mounted on any one of the fixed plates 26, and includes:

[0089] The main shaft 27 is rotatably mounted on any one of the fixed plates 26;

[0090] The main rotating roller 28 is fixedly mounted on the main rotating shaft 27, and the axis of the main rotating roller 28 coincides with that of the main rotating shaft 27. A shaft groove 29 is provided in the middle of the end face of the main rotating roller 28 away from the main rotating shaft 27, and the axis of the shaft groove 29 coincides with the axis of the main rotating roller 28. A power groove 30 is provided in the end face of the main rotating roller 28 away from the main rotating shaft 27.

[0091] A secondary rotating section, mounted on a fixed plate 26 away from the main rotating section, is used to cooperate with the main rotating section to realize the charging gun's cable feeding and retracting. The secondary rotating section includes:

[0092] The auxiliary rotating shaft 31 is rotatably mounted on the fixed plate 26 away from the main rotating shaft 27;

[0093] The auxiliary rotating roller 32 is fixedly mounted on the auxiliary rotating shaft 31. A shaft 33 is fixedly mounted on the middle of the end face of the auxiliary rotating roller 32 near the main rotating roller 28. The shaft 33 is rotatably connected to the shaft groove 29. A driven gear 34 is fixedly mounted on the shaft 33.

[0094] The shaft cover 35 is sleeved on the auxiliary roller 32, and one end of the shaft cover 35 is rotatably connected to the surface of the main roller 28. It should be noted that by providing the shaft cover 35, the power unit is shielded, and the charging cable of the charging gun is prevented from falling into the gap between the main roller 28 and the auxiliary roller 32.

[0095] The power unit, mounted on the main rotating unit and electrically connected to the control device 2, includes:

[0096] The second motor 36 is fixedly installed in the power slot 30 and electrically connected to the control device 2;

[0097] The support plate 37 is fixedly installed at the output end of the second motor 36;

[0098] An electric push rod 38 is fixedly mounted on a support plate 37, and the axis of the electric push rod 38 coincides with the axis of the support plate 37. The electric push rod 38 is electrically connected to the control device 2.

[0099] The connecting rod 39 is fixedly installed at the end of the electric push rod 38 away from the bearing plate 37, and the end of the connecting rod 39 away from the electric push rod 38 is fixedly connected to the drive gear 40, which meshes with the driven gear 34.

[0100] When charging a vehicle using a charging gun, the electric push rod 38 is activated by the control device 2, causing it to move the drive gear 40 towards the main roller 28. This disengages the drive gear 40 from the driven gear 34, allowing the operator to hold the charging gun and extend the power cord to charge the vehicle. Once charging is complete, the operator inserts the charging gun into the charging socket 8. The electric push rod 38 is then activated by the control device 2, pushing the drive gear 40, which is fixedly connected to the connecting rod 39, towards the auxiliary roller 32. The drive gear 40 and driven gear 34 are engaged again. Then, the control device 2 controls the second motor 36 to start, which causes the bearing plate 37, which is fixedly connected to the output end of the second motor 36, to drive the electric push rod 38 to rotate. This causes the connecting rod 39, which is fixedly connected to the electric push rod 38, to drive the drive gear 40 to rotate. Through the meshing between the drive gear 40 and driven gear 34, the insert shaft 33, which is fixedly connected to the driven gear 34, is driven to rotate. This causes the auxiliary roller 32, which is fixedly connected to the insert shaft 33, to rotate, thereby rewinding the stretched wire onto the auxiliary roller 32.

[0101] This device is equipped with a winding mechanism, which allows the device to automatically rewind the stretched charging cable after use, eliminating the need for manual winding and preventing damage to the charging cable, thus extending the lifespan of the charging gun to some extent.

[0102] Working principle: When in use, the charging gun is inserted into the charging base 8, and then the first motor 13 is started by the control device 2, which causes the drive screw 14, which is fixedly connected to the output end of the first motor 13, to rotate. Through the threaded transmission between the drive screw 14 and the horizontal slider 15, the horizontal slider 15 slides a certain distance in the horizontal sliding groove 12 (this distance is preset by the operator). The sliding of the horizontal slider 15 drives the toothed plate 17 set on the horizontal slider 15 to move, which in turn drives the transmission gear 20 meshing with the toothed plate 17 to rotate, which causes the transmission shaft 19, which is fixedly connected to the transmission gear 20, to rotate, which in turn drives the rotating shaft 7, which is fixedly connected to the transmission shaft 19, to rotate 90 degrees. This causes the charging base 8, which is fixedly connected to the rotating shaft 7, to rotate 90 degrees around the axis of the rotating shaft 7. At this time, the charging gun inserted into the charging base 8 also rotates 90 degrees around the axis of the rotating shaft 7, so that the handle of the charging gun rotates into the placement groove 9.

[0103] During the process of the charging gun handle rotating into the placement slot 9, the charging gun handle first contacts the contact wheels 25 on both sides. As the charging gun handle continues to rotate, the charging gun handle applies a force to the contact wheels 25 on both sides, thereby causing the contact wheels 25 to apply a force to the U-shaped plate 23 through the wheel axle 24, which in turn causes the U-shaped plate 23 to apply a force to the built-in block 21. The built-in block 21 slides in the built-in slot 10 towards the same-side return spring 22, thereby continuously compressing the same-side return spring 22 until the distance between the two U-shaped plates 23 is greater than the size of the charging gun handle. This allows the charging gun handle to rotate into the placement slot 9 through the two contact wheels 25. After the charging gun handle passes through the two contact wheels 25, the two contact wheels 25 lose their force, and the compressed return springs 22 on both sides release their elastic potential energy, thereby pushing the built-in blocks 21 on both sides closer to each other, thereby causing the two U-shaped plates 23 on both sides to approach each other, which in turn drives the two contact wheels 25 on both sides to approach each other, until the two contact wheels 25 return to the contacting state.

[0104] When charging a vehicle using a charging gun, the electric push rod 38 is activated by the control device 2, causing it to move the drive gear 40 towards the main roller 28. This disengages the drive gear 40 from the driven gear 34, allowing the operator to hold the charging gun and extend the power cord to charge the vehicle. Once charging is complete, the operator inserts the charging gun into the charging socket 8. The electric push rod 38 is then activated by the control device 2, pushing the drive gear 40, which is fixedly connected to the connecting rod 39, towards the auxiliary roller 32. The drive gear 40 and driven gear 34 are engaged again. Then, the control device 2 controls the second motor 36 to start, which causes the bearing plate 37, which is fixedly connected to the output end of the second motor 36, to drive the electric push rod 38 to rotate. This causes the connecting rod 39, which is fixedly connected to the electric push rod 38, to drive the drive gear 40 to rotate. Through the meshing between the drive gear 40 and driven gear 34, the insert shaft 33, which is fixedly connected to the driven gear 34, is driven to rotate. This causes the auxiliary roller 32, which is fixedly connected to the insert shaft 33, to rotate, thereby rewinding the stretched wire onto the auxiliary roller 32.

[0105] The above description of the embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fixing structure for a DC charging gun, comprising a charging mounting base (1) and a control device (2) fixedly mounted on the charging mounting base (1), wherein mounting holes (3) are provided at the four corners of the charging mounting base (1), characterized in that, A protective box (4) is fixedly installed on the charging base (1). A battery (5) is fixedly installed inside the protective box (4). A receiving cavity (6) for accommodating the charging gun is provided on the surface of the protective box (4) away from the charging base (1). A rotating shaft (7) is rotatably installed on the protective box (4). A charging base (8) is fixedly installed on the rotating shaft (7). Two sets of symmetrically arranged driving mechanisms are provided inside the protective box (4). A placement groove (9) is provided on the protective box (4). Two symmetrically arranged internal grooves (10) are opened in the placement groove (9). A fixing mechanism for fixing the charging gun handle is provided on the protective box (4). A winding mechanism for winding the wire is provided on the charging base (1).

2. The fixing structure of a DC charging gun according to claim 1, characterized in that, The drive mechanism includes: A fixing block (11) is fixedly installed inside the protective box (4), and a horizontal sliding groove (12) is provided on the fixing block (11). The drive unit is mounted on the fixed block (11) and is electrically connected to the control device (2); The transmission part is located inside the protective box (4). The transmission part is used to cooperate with the drive part to drive the rotating shaft (7) to rotate.

3. The fixing structure of a DC charging gun according to claim 2, characterized in that, The drive unit includes: The first motor (13) is fixedly mounted on the fixed block (11) and electrically connected to the control device (2); The drive screw (14) is located in the transverse sliding groove (12), and the end of the drive screw (14) close to the first motor (13) is fixedly connected to the output end of the first motor (13), and the end of the drive screw (14) away from the first motor (13) is rotatably connected to the fixed block (11). The horizontal slider (15) is slidably disposed in the horizontal sliding groove (12) and threadedly connected to the drive screw (14).

4. The fixing structure of a DC charging gun according to claim 3, characterized in that, The transmission unit includes: The limiting rod (16) is fixedly installed inside the protective box (4); The toothed plate (17) is slidably disposed on the limiting rod (16), and the surface of the toothed plate (17) near the horizontal slider (15) is fixedly connected to the horizontal slider (15); An auxiliary spring (18) is sleeved on the limiting rod (16), and the auxiliary spring (18) is always in a compressed state; A drive shaft (19) is fixedly disposed at the end of the rotating shaft (7). A drive gear (20) is fixedly disposed at the end of the drive shaft (19) away from the rotating shaft (7). The drive gear (20) meshes with the toothed plate (17).

5. The fixing structure of a DC charging gun according to claim 4, characterized in that, The fixing mechanism includes: There are two built-in blocks (21), and the two built-in blocks (21) are slidably disposed in the two built-in slots (10); The reset spring (22) is located in the built-in groove (10), and the two ends of the reset spring (22) are fixedly connected to the protective box (4) and the built-in block (21) respectively. The reset spring (22) is always in a compressed state. The contact portion has two sets, and the two sets of contact portions are respectively disposed on the two built-in blocks (21). The two contact portions are used to fix the charging gun handle placed in the placement slot (9).

6. The fixing structure of a DC charging gun according to claim 5, characterized in that, The contact portion includes: The U-shaped plate (23) is fixedly mounted on the built-in block (21); The axle (24) is rotatably mounted on the U-shaped plate (23); The contact wheel (25) is fixedly sleeved on the axle (24), and in the initial state, the contact wheels (25) in the two contact parts abut against each other.

7. The fixing structure of a DC charging gun according to claim 6, characterized in that, The winding mechanism includes: There are two fixing plates (26), and the two fixing plates (26) are symmetrically arranged on the charging fixing base (1); The main rotating part is mounted on any one of the fixed plates (26); A secondary rotating part is disposed on a fixed plate (26) away from the main rotating part. The secondary rotating part is used to cooperate with the main rotating part to realize the charging gun's wire feeding and retraction. The power unit is mounted on the main rotating part and is electrically connected to the control device (2).

8. The fixing structure of a DC charging gun according to claim 7, characterized in that, The main rotating unit includes: The main shaft (27) is rotatably mounted on any fixed plate (26); The main rotating roller (28) is fixedly mounted on the main rotating shaft (27), and the axis of the main rotating roller (28) coincides with the axis of the main rotating shaft (27). A shaft groove (29) is provided in the middle of the end face of the main rotating roller (28) away from the main rotating shaft (27), and the axis of the shaft groove (29) coincides with the axis of the main rotating roller (28). A power groove (30) is provided in the end face of the main rotating roller (28) away from the main rotating shaft (27).

9. The fixing structure of a DC charging gun according to claim 8, characterized in that, The auxiliary rotating part includes: The secondary rotating shaft (31) is rotatably mounted on a fixed plate (26) away from the main rotating shaft (27); A secondary rotating roller (32) is fixedly mounted on the secondary rotating shaft (31). A shaft (33) is fixedly mounted on the middle of the end face of the secondary rotating roller (32) near the main rotating roller (28). The shaft (33) is rotatably connected to the shaft groove (29). A driven gear (34) is fixedly mounted on the shaft (33). A shaft cover (35) is fitted onto the auxiliary roller (32), and one end of the shaft cover (35) is rotatably connected to the surface of the main roller (28).

10. The fixing structure of a DC charging gun according to claim 9, characterized in that, The power unit includes: The second motor (36) is fixedly installed in the power slot (30) and electrically connected to the control device (2); The support plate (37) is fixedly installed at the output end of the second motor (36); An electric push rod (38) is fixedly mounted on the bearing plate (37), and the axis of the electric push rod (38) coincides with the axis of the bearing plate (37). The electric push rod (38) is electrically connected to the control device (2). A connecting rod (39) is fixedly disposed at one end of the electric push rod (38) away from the bearing plate (37), and a drive gear (40) is fixedly connected to the end of the connecting rod (39) away from the electric push rod (38), and the drive gear (40) meshes with the driven gear (34).

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