A DC charging pile gun wire retraction protection structure

Abstract

This utility model discloses a DC charging gun cable retraction protection structure, including an assembly bracket, a cable storage roller, a follow-up guide assembly, a fixed guide assembly, and a drive motor. The cable storage roller is rotatably mounted on the assembly bracket, and the charging gun cable is spirally wound around the cable storage roller and led out through the follow-up guide assembly and the fixed guide assembly. The drive motor drives the cable storage roller through a worm gear mechanism, realizing automatic cable retraction and release with a self-locking function. The follow-up guide assembly includes a lifting bracket, an adjusting screw, and guide wheels A / B, which are linked to the cable storage roller through a synchronous belt, so that the lifting bracket rises and falls synchronously with the cable release height, ensuring smooth cable guidance. The fixed guide assembly is equipped with a guide wheel C and a guide sleeve to further stabilize the cable direction. This structure can effectively reduce cable wear, adapt to different charging heights, and is equipped with a charging gun protective socket, improving reliability and user experience, and is suitable for DC fast charging scenarios.

Description

Technical Field

[0001] This utility model relates to the technical field of charging piles, specifically a retractable protection structure for the charging gun wire of a DC charging pile. Background Technology

[0002] With the increasing popularity of new energy vehicles, DC charging piles, as core equipment for rapid energy replenishment, are receiving growing attention for their reliability and user experience. The charging cable, a crucial component connecting the charging pile to the electric vehicle, is prone to wear and tear, including internal cable breakage, due to dragging, bending, and friction during long-term use, affecting charging safety and equipment lifespan. Furthermore, the cable is typically long and heavy; if left hanging or piled on the ground, it may be damaged by vehicles, hinder user operation, and even pose a tripping hazard.

[0003] Currently, common charging station cable management methods on the market mainly fall into two categories: manual cable management and simple spring-loaded cable reel mechanisms. Manual cable management relies on users to organize the cables themselves, but in practice, users often neglect proper cable management, resulting in messy cables. While traditional spring-loaded cable reel mechanisms can automatically retract the cables, they lack guiding and adjustment functions during the winding and unwinding process, easily leading to jamming, twisting, or wear of the outer sheath due to uneven cable coiling. In addition, the cable extension length adjustment in existing technologies largely depends on manual intervention, making it difficult to accurately match the charging port positions of different vehicle models, affecting ease of use.

[0004] Some improvement schemes attempt to use a motor-driven cable rewinding mechanism, but the following problems still exist: (1) The height change during cable rewinding is not compensated, which leads to increased friction between the cable and the guide structure; (2) There is no self-locking function, and the cable may loosen due to external force after it is fixed; (3) The charging gun has no dedicated protective structure and is easily corroded by rain and dust when exposed to the outdoors for a long time. Utility Model Content

[0005] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a DC charging pile gun cable retraction protection structure, which has significant advantages in terms of automatic retraction, wear prevention, adaptive adjustment and safety protection. It can effectively improve the reliability, durability and user experience of the charging pile and is suitable for various DC fast charging scenarios.

[0006] The technical solution adopted by this utility model to achieve the above-mentioned objective is: a DC charging pile gun wire retraction protection structure, including an assembly bracket and a wire storage roller, a follow-up guide component, a fixed guide component, and a drive motor installed on the assembly bracket. The wire storage roller is rotatably installed in the assembly bracket, and the gun wire is spirally and evenly wound on the wire storage roller. The gun wire released from the wire storage roller passes through the follow-up guide component and the fixed guide component in sequence and then extends out of the outside of the assembly bracket. The drive motor is fixedly installed in the assembly bracket and is poweredly connected to the wire storage roller. The follow-up guide component is linked with the wire storage roller.

[0007] The follow-up guide assembly includes a lifting bracket, an adjusting screw, guide wheel A, and guide wheel B. The lifting bracket is slidably installed in the assembly bracket and moves in a direction parallel to the axis of the wire storage roller. The adjusting screw is rotatably installed in the assembly bracket and is screwed to the lifting bracket. Synchronous wheel A and synchronous wheel B are respectively fixed to the wire storage roller and the adjusting screw. The synchronous wheel A and synchronous wheel B are powered by a synchronous belt. The guide wheel A and guide wheel B are both rotatably installed on the lifting bracket, and the axis of guide wheel A is parallel to the axis of the wire storage roller, while the axis of guide wheel B is perpendicular to the axis of guide wheel A. The wire is arranged to pass around guide wheel A and guide wheel B in sequence.

[0008] Based on the above technical solutions, in order to ensure that the various functional components involved can be stably assembled in the assembly bracket, the following technical solutions are provided.

[0009] The assembly bracket includes uprights, a front panel, a rear side panel, and multiple horizontally arranged cross panels. The uprights are arranged at the corners, and the front panel and rear side panel are fixed to the front and rear sides of the uprights, respectively. The cross panels are fixedly installed between each set of uprights.

[0010] Based on the above technical solutions, in order to ensure that the drive motor can achieve power connection with the wire storage roller, and to ensure that the wire storage roller can achieve automatic locking after the wire release length is adjusted, the following technical solutions are provided.

[0011] A worm gear is coaxially connected to the output shaft of the drive motor, and a worm wheel is coaxially fixed to the end of the wire storage roller. The worm wheel and the worm gear are matched together.

[0012] Based on the above technical solutions, in order to ensure that the lifting support can be stably raised and lowered in the vertical direction under the drive of the adjusting screw, the following technical solutions are provided.

[0013] The follow-up guide assembly also includes at least two sets of guide rods, which are fixedly installed on the horizontal plate and kept parallel to the adjusting screw. The lifting bracket is slidably connected to the guide rods.

[0014] Based on the above technical solutions, in order to ensure that the gun wire can stably pass through the fixed guide assembly and be led out from the front panel, the following technical solutions are provided.

[0015] The fixed guide assembly includes two sets of guide wheels C arranged with their axes parallel to each other and a guide sleeve. The guide wheels C are rotatably mounted in the assembly bracket, and the guide sleeve is fixedly mounted on the front panel. The axis of the guide wheel C is parallel to the axis of the guide wheel B. The gun wire passes between the two sets of guide wheels C and then exits the front panel through the guide sleeve. The outer end of the guide sleeve is fixedly connected to a limiting seat A, and a limiting seat B is fixedly connected to the periphery of the gun wire to abut against the limiting seat A.

[0016] Based on the above technical solutions, in order to ensure effective protection of the charging gun and prevent it from being damaged by dragging on the ground, the following technical solutions are provided.

[0017] The outer end of the charging cable is equipped with a charging gun, and the front panel is equipped with a receiving socket that can be nested and plugged into the charging gun.

[0018] The beneficial effects of this utility model are:

[0019] 1. Automatic winding and precise guidance: The drive motor rotates the wire storage roller to achieve automatic winding and winding of the wire, avoiding the inconvenience of manual operation. The follow-up guide component is linked with the wire storage roller to ensure that the wire always maintains optimal fit with the guide wheel during the winding and winding process, avoiding cable twisting, friction or outer sheath damage caused by height changes. The fixed guide component further stabilizes the wire's direction, ensuring that it is smoothly led out from the mounting bracket and reducing mechanical wear caused by disordered swinging.

[0020] 2. Synchronous lifting and adjustment to adapt to different charging needs: The adjusting screw and the wire storage roller are linked to synchronize the movement of the lifting bracket with the wire release height of the wire storage roller, ensuring that the wire is always released and retrieved along the optimal path. This structure is suitable for electric vehicle charging ports of different heights and avoids the wire pulling or piling problems caused by height mismatch in traditional wire winding mechanisms, thus improving the user experience.

[0021] 3. Self-locking function to prevent accidental release: The drive motor drives the wire storage roller through the worm gear and worm wheel transmission mechanism. It automatically locks when the machine stops running to prevent the wire from being accidentally released due to external force (such as user pulling or vehicle movement), thus improving safety and reliability.

[0022] 4. Charging gun protection extends service life. The charging gun can be nested into the front panel's receiving slot to avoid long-term exposure to outdoor environments and corrosion from rain and dust. The protective cover automatically closes after the charging gun is pulled out, further preventing foreign objects from entering the slot and improving protection performance.

[0023] 5. Limit protection to prevent excessive retraction: The cooperative design of limit seat A and limit seat B can prevent excessive retraction of the gun wire, avoid damage to the internal cable due to stress, and control the start and stop of the drive motor through sensor feedback, thereby improving the system's intelligence level.

[0024] In summary, the DC charging pile gun retraction protection structure proposed in this solution has significant advantages in terms of automatic retraction, wear prevention, adaptive adjustment, and safety protection. It can effectively improve the reliability, durability, and user experience of the charging pile and is suitable for various DC fast charging scenarios. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the various functional components combined in this utility model;

[0028] Figure 4 A structural diagram of the lifting support and the components mounted on it;

[0029] Figure 5 This is a structural diagram of a fixed guide assembly.

[0030] In the diagram: 1 Assembly bracket, 11 Column, 12 Front panel, 121 Accommodation socket, 13 Rear side plate, 14 Horizontal plate, 141 Wiring hole, 142 Mounting bracket, 2 Wire storage roller, 21 Synchronous pulley A, 22 Worm gear, 31 Lifting bracket, 32 Adjusting screw, 321 Synchronous pulley B, 33 Guide wheel A, 34 Guide wheel B, 35 Guide rod, 41 Guide wheel C, 42 Guide sleeve, 43 Limit seat A, 5 Drive motor, 51 Worm gear, 6 Gun wire, 61 Limit seat B, 62 Charging gun. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-5A DC charging pile gun wire retraction protection structure includes an assembly bracket 1 and a wire storage roller 2, a follow-up guide component, a fixed guide component, and a drive motor 5 installed on the assembly bracket 1. The wire storage roller 2 is rotatably installed in the assembly bracket 1, and the gun wire 6 is spirally and uniformly wound on the wire storage roller 2. The gun wire 6 released from the wire storage roller 2 passes through the follow-up guide component and the fixed guide component in sequence and extends out of the outside of the assembly bracket 1. The drive motor 5 is fixedly installed in the assembly bracket 1 and is poweredly connected to the wire storage roller 2. The follow-up guide component and the wire storage roller 2 are linked together.

[0033] The follow-up guide assembly includes a lifting bracket 31, an adjusting screw 32, a guide wheel A33, and a guide wheel B34. The lifting bracket 31 is slidably installed in the assembly bracket 1 and moves in a direction parallel to the axis of the wire storage roller 2. The adjusting screw 32 is rotatably installed in the assembly bracket 1 and is screwed to the lifting bracket 31. Synchronous wheels A21 and B321 are respectively fixed on the wire storage roller 2 and the adjusting screw 32. The synchronous wheels A21 and B321 are connected by a synchronous belt. The guide wheels A33 and B34 are rotatably installed on the lifting bracket 31. The axis of the guide wheel A33 is parallel to the axis of the wire storage roller 2, and the axis of the guide wheel B34 is perpendicular to the axis of the guide wheel A33. The wire 6 is arranged to pass around the guide wheels A33 and B34 in sequence.

[0034] The mounting bracket 1 enables the stable installation of the entire component in the DC charging pile, and ensures that other functional components are stably assembled and operated in the mounting bracket 1 according to the set requirements, so as to realize the extension and retraction of the charging cable 6 and avoid common problems such as the charging cable 6 dragging on the ground and the outer sheath being worn.

[0035] The drive motor 5 can drive the wire storage roller 2 to operate stably, thereby enabling the release and retraction of the wire 6 wound on it. The height changes that occur during the release and retraction of the wire 6 will be compensated by the follow-up guide component to prevent wear between different parts of the wire 6.

[0036] Specifically, through the speed matching of synchronous pulleys A21 and B321, and the density design of the thread grooves on the adjusting screw 32, when the adjusting screw 32 drives the lifting bracket 31 to move up and down, the lifting bracket 31 always remains flush with the take-up and release height on the wire storage roller 2, so that the wire 6 being taken back or released is always engaged with the guide wheel A33. The guide wheel A33 includes two sets, which can guide and adjust the wire 6 in the horizontal direction, and can then engage with the guide wheel B34. The guide wheel B34 engages with the fixed guide assembly, which can guide and adjust the wire 6 in the vertical direction, so that the wire 6 is smoothly led out of the outer side of the mounting bracket 1.

[0037] To ensure that all functional components can be stably assembled in the assembly bracket 1, the following technical solution is provided.

[0038] The assembly bracket 1 includes a column 11, a front panel 12, a rear side panel 13, and multiple horizontally arranged horizontal plates 14. The column 11 is arranged at the corner position, the front panel 12 and the rear side panel 13 are respectively fixed to the front and rear sides of the column 11, and the horizontal plates 14 are fixedly installed between each group of columns 11.

[0039] After the mounting bracket 1 is installed in the DC charging pile, its front panel 12 is exposed, and the charging cable 6 is led out from the front panel 12. The setting of the column 11, the front panel 12, and the rear side panel 13 can provide stable support for each layer of horizontal plates 14, and each layer of horizontal plates 14 can ensure that the functional components involved are stably installed on them.

[0040] The inner end of the gun wire 6 extends into the axis of the wire storage roller 2 and extends vertically downward from the bottom of the wire storage roller 2. Therefore, a wiring hole 141 is provided on the bottommost horizontal plate 14 so that the inner end of the gun wire 6 can be electrically connected to the power supply cable introduced through the wiring hole 141.

[0041] To ensure that the drive motor 5 can achieve a power connection with the wire storage roller 2, and to ensure that the wire storage roller 2 can achieve an automatic locking state after the wire release length of the gun wire 6 is adjusted, the following technical solution is provided.

[0042] A worm gear 51 is coaxially connected to the output shaft of the drive motor 5, and a worm wheel 22 is coaxially fixed to the end of the wire storage roller 2. The worm wheel 22 and the worm gear 51 are matched together.

[0043] By combining the worm 51 and the worm wheel 22, the power output by the drive motor 5 can be reduced and the torque increased to ensure the stable operation of the wire storage roller 2 and realize the action of taking in and releasing the wire 6. At the same time, after the wire 6 is adjusted, the drive motor 5 is turned off. At this time, the structural characteristics of the worm 51 can limit the worm wheel 22, thereby putting the worm wheel 22 and the wire storage roller 2 into a self-locking state.

[0044] To ensure that the lifting bracket 31 can be stably raised and lowered in the vertical direction under the drive of the adjusting screw 32, the following technical solution is provided.

[0045] The follow-up guide assembly also includes at least two sets of guide rods 35. The guide rods 35 are fixedly installed on the horizontal plate 14 and kept parallel to the adjusting screw 32. The lifting bracket 31 is slidably connected to the guide rods 35.

[0046] The guide rod 35 can provide stable guidance support for the lifting bracket 31. When the lifting bracket 31 is driven to move by the adjusting screw 32, the guide rod 35 can guide and limit the movement, enabling the lifting bracket 31 to rise and fall stably in the vertical direction.

[0047] To ensure that the gun wire 6 can stably pass through the fixed guide assembly and be led out from the front panel 12, the following technical solution is provided.

[0048] The fixed guide assembly includes two sets of guide wheels C41 with their axes arranged in parallel and a guide sleeve 42. The guide wheels C41 are rotatably mounted in the mounting bracket 1, and the guide sleeve 42 is fixedly mounted on the front panel 12. The axis of the guide wheel C41 is parallel to the axis of the guide wheel B34. The gun wire 6 passes between the two sets of guide wheels C41 and then exits the front panel 12 through the guide sleeve 42. The outer end of the guide sleeve 42 is fixedly connected to a limiting seat A43, and a limiting seat B61 is fixedly connected to the periphery of the gun wire 6 to maintain contact with the limiting seat A43.

[0049] A mounting bracket 142 is also fixed on the bottom horizontal plate 14 to ensure that the two sets of guide wheels C41 can be rotated and installed on it. The axis of the guide sleeve 42 passes through the gap between the two sets of guide wheels C41 to ensure the stable arrangement of the gun wire 6 and lead it out to the outside of the front panel 12.

[0050] When the limit seat A43 and the limit seat B61 are in contact, the gun wire 6 can be prevented from retracting too much. When the two are in contact, the switching state of the drive motor 5 can be controlled by the data received by the pressure sensor and other detection devices.

[0051] To ensure effective protection of the charging gun 62 and prevent it from being damaged by dragging on the ground, the following technical solution is provided.

[0052] The outer end of the charging cable 6 is equipped with a charging gun 62, and the front panel 12 is equipped with a receiving socket 121 that can be nested and plugged into the charging gun 62.

[0053] When not in use, the charging gun 62 can be plugged into the receiving socket 121 for protection. The receiving socket 121 is also equipped with a protective cover. When the charging gun 62 is in use, the protective cover can be automatically flipped down by the torsion spring to close the receiving socket 121 and prevent rainwater from accumulating there.

[0054] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0055] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A direct current charging pile gun line contraction protection structure, characterized in that: The assembly includes an assembly bracket (1) and a wire storage roller (2), a follow-up guide assembly, a fixed guide assembly, and a drive motor (5) mounted on the assembly bracket (1). The wire storage roller (2) is rotatably mounted in the assembly bracket (1), and the wire (6) is spirally and evenly wound onto the wire storage roller (2). The wire (6) released from the wire storage roller (2) passes through the follow-up guide assembly and the fixed guide assembly in sequence and then extends out of the outside of the assembly bracket (1). The drive motor (5) is fixedly mounted in the assembly bracket (1) and is poweredly connected to the wire storage roller (2). The follow-up guide assembly is linked with the wire storage roller (2). The follow-up guide assembly includes a lifting bracket (31), an adjusting screw (32), a guide wheel A (33), and a guide wheel B (34). The lifting bracket (31) is slidably installed in the assembly bracket (1) and moves in a direction parallel to the axis of the wire storage roller (2). The adjusting screw (32) is rotatably installed in the assembly bracket (1) and is screwed to the lifting bracket (31). The wire storage roller (2) and the adjusting screw (32) are respectively fixed with a synchronous wheel A (21) and a synchronous wheel B (321). The synchronous wheel A (21) and the synchronous wheel B (321) are connected by a synchronous belt. The guide wheel A (33) and the guide wheel B (34) are rotatably installed on the lifting bracket (31). The axis of the guide wheel A (33) is parallel to the axis of the wire storage roller (2), and the axis of the guide wheel B (34) is perpendicular to the axis of the guide wheel A (33). The gun wire (6) is arranged to pass around the guide wheel A (33) and the guide wheel B (34) in sequence.

2. The DC charging pile gun line contraction protection structure according to claim 1, characterized in that: The assembly bracket (1) includes a column (11), a front panel (12), a rear side panel (13), and a multi-layer horizontally arranged horizontal plate (14). The column (11) is arranged at the corner position. The front panel (12) and the rear side panel (13) are respectively fixed to the front and rear sides of the column (11). The horizontal plate (14) is fixedly installed between each group of columns (11).

3. The DC charging pile gun line contraction protection structure according to claim 1, characterized in that: A worm gear (51) is coaxially connected to the output shaft of the drive motor (5), and a worm wheel (22) is coaxially fixed to the end of the wire storage roller (2). The worm wheel (22) and the worm gear (51) are matched together.

4. According to claim 2, the DC charging pile gun wire retraction protection structure further includes at least two sets of guide rods (35), the guide rods (35) are fixedly installed on the horizontal plate (14) and kept parallel to the adjusting screw (32), and the lifting bracket (31) is slidably inserted with the guide rods (35).

5. The DC charging pile gun line shrinkage protection structure according to claim 2, characterized in that: The fixed guide assembly includes two sets of guide wheels C (41) with their axes arranged in parallel and a guide sleeve (42). The guide wheels C (41) are rotatably mounted in the mounting bracket (1), and the guide sleeve (42) is fixedly mounted on the front panel (12). The axis of the guide wheels C (41) is parallel to the axis of the guide wheels B (34). The gun wire (6) passes between the two sets of guide wheels C (41) and then passes through the guide sleeve (42) and exits the front panel (12). The outer end of the guide sleeve (42) is fixedly connected to a limiting seat A (43), and the periphery of the gun wire (6) is fixedly connected to a limiting seat B (61) that abuts against the limiting seat A (43).

6. The DC charging pile gun line shrinkage protection structure according to claim 2, characterized in that: The outer end of the charging cable (6) is equipped with a charging gun (62), and the front panel (12) is equipped with a receiving socket (121) that can be nested and plugged into the charging gun (62).

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