A top mount reel for a charging post

Abstract

The application relates to the technical field of charging auxiliary devices, in particular to a top-mounted wire winding device for a charging pile, which comprises a fixed base, a wire winding assembly, a driving assembly, a conductive transmission assembly and optional limiting, control and guiding assemblies; the fixed base is welded and fixed to the top of the charging pile; the wire winding assembly comprises a wire winding disc for winding a wire cable; the driving assembly drives the wire winding disc to realize wire cable winding and unwinding through forward and reverse rotation; the conductive transmission assembly ensures the conductivity of the rotating wire cable; the guiding assembly surrounds a four-direction rubber-coated roller to form a guiding channel and reduce friction; the limiting assembly prevents excessive rotation; and the control assembly supports manual / wireless control. The device is installed on the top to save space, realizes automatic wire storage and protection, and improves the safety and convenience in use.

Description

Technical Field

[0001] This application relates to the field of charging auxiliary device technology, and in particular to a top-mounted cable reel for charging piles. Background Technology

[0002] With the rapid development of the new energy vehicle industry, charging piles, as an important supporting infrastructure for new energy vehicles, are increasingly widely used in various scenarios, covering residential communities, commercial parking lots, public charging stations, and other fields. However, most charging piles on the market currently lack dedicated cable management devices, leaving charging cables exposed for extended periods. This leads to several problems during use: Firstly, the cables, constantly exposed to the outdoors, are subject to the effects of sun, rain, dust, and extreme temperature changes, causing the cable insulation layer to age and crack faster. This not only significantly shortens the cable's lifespan but also increases the risk of short circuits and leakage, threatening user safety and equipment safety. Secondly, after charging, users often leave the cables haphazardly next to the parking space or on the ground, easily causing them to become tangled and knotted. This requires considerable time to tidy up for the next use, severely impacting the user experience. Furthermore, the scattered cables can trip pedestrians, and are easily damaged by vehicles entering and exiting parking spaces, increasing maintenance costs and potentially rendering the charging pile unusable, thus affecting charging service efficiency. Furthermore, many existing cable management devices are ground-mounted, occupying ground space around the charging station. Moreover, cables are prone to friction damage during storage, failing to effectively address the issues of cable protection and space utilization. Therefore, there is an urgent need for a charging station cable management device that can achieve orderly cable storage, effective cable protection, space saving, and convenient operation, to overcome the aforementioned shortcomings of existing technologies. Utility Model Content

[0003] In order to enable charging pile cables to be stored in an orderly manner, effectively protect the cables, save space, and be easy to operate, this application provides a top-mounted cable reel for charging piles.

[0004] This application provides a top-mounted cable reel for charging piles, employing the following technical solution: It includes a fixed base, a cable winding assembly, a drive assembly, and a conductive transmission assembly. The fixed base is used to connect to the top of an integrated charging pile, securing the entire device. The cable winding assembly includes a winding reel for winding the charging cable of the charging pile. The drive assembly is connected to the winding reel and drives it to rotate forward or backward, thereby dispensing or winding the charging cable. The conductive transmission assembly enables conductive connection of the charging cable from a fixed state to a rotating state, ensuring stable current transmission during charging.

[0005] Optionally, the drive assembly includes a motor and a reducer, with the output end of the motor connected to the input end of the reducer and the output end of the reducer connected to the take-up reel; the motor outputs power, which is reduced by the reducer to drive the take-up reel to rotate, thereby adjusting the rotation speed and torque of the take-up reel.

[0006] Optionally, the conductive transmission component is a slip ring, which includes a rotor side and a stator side; the rotor side rotates synchronously with the take-up reel and is connected to the movable end of the charging cable; the stator side is fixedly installed and connected to the power supply end of the charging pile.

[0007] Optionally, a limit assembly is also included. The limit assembly is a mechanical limit module, which includes a limit switch, a trigger block, and a control box. The control box is mounted on the mounting base. There are two limit switches, one on each side of the control box. A rotating screw is installed inside the control box, and a trigger block is threaded onto the top of the rotating screw. A guide block is also installed inside the control box, and the trigger block can slide horizontally on the guide block. The end of the rotating screw is connected to the output end of the reducer. When the take-up reel rotates to a preset limit position, the trigger block moves to the trigger end of the limit switch on the corresponding side and triggers a stop signal, preventing excessive rotation of the take-up reel from causing cable damage or device malfunction.

[0008] Optionally, it also includes a control component, which includes a motor control board, a manual control box, and a wireless remote controller. The motor control board is fixedly installed inside the control box and is electrically connected to the motor of the drive component. The manual control box is electrically connected to the motor control board via a wire, and the wireless remote controller is wirelessly connected to the motor control board.

[0009] Optionally, a guide assembly is also included, which includes a guide plate and at least two rubber-coated rollers; the guide plate is fixed to one side of the fixed base, the rubber-coated rollers are rotatably mounted on the guide plate, and a guide channel for the charging cable to pass through is formed between the two rubber-coated rollers; during the dispensing or rewinding of the charging cable, it moves along the guide channel, and the rubber-coated rollers reduce frictional damage between the charging cable and the guide plate.

[0010] In summary, this application includes the following beneficial technical effects: 1. Extend cable life and reduce operating costs: This utility model uses a cable reel to centrally store cables, avoiding long-term exposure to the outdoor environment and reducing damage to the insulation layer caused by sun, rain, and dust accumulation; at the same time, the rubber-coated roller of the guide component converts the sliding friction during cable winding and unwinding into rolling friction, further reducing insulation wear and significantly reducing cable replacement costs for charging pile operators.

[0011] 2. Enhanced ease of use and optimized user experience: The drive component drives the cable reel to automatically retract and extend the cable, eliminating the need for users to manually tidy up tangled or knotted cables; with both manual control box and wireless remote control, users can operate the cable retraction and extension directly next to the parking space without having to go back and forth to the charging station itself, greatly improving ease of use, especially during peak charging periods, effectively reducing user waiting time.

[0012] 3. Ensure safe use and avoid accident risks: The conductive transmission component (slip ring) achieves stable conductivity when the cable rotates by rotating synchronously with the take-up reel on the rotor side and being fixedly connected to the power supply end on the stator side, thus avoiding short circuits and leakage accidents caused by cable entanglement and breakage; the limit component achieves automatic limit through "screw drive + limit switch" to prevent the cable from being broken due to excessive take-up or falling off due to excessive let-out. At the same time, the top-mounted installation design prevents the cable from tripping pedestrians or being run over by vehicles, thus comprehensively avoiding safety hazards.

[0013] 4. Saves space and improves scene adaptability: The fixed base connects to the top of the integrated charging pile and adopts a top-mounted installation method, which does not occupy the ground space around the parking space. It is highly applicable in commercial parking lots and residential communities where parking space resources are scarce. It can be directly adapted to the transformation and upgrading of existing integrated charging piles without the need for additional expansion of the parking space, reducing the difficulty and cost of transformation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the device; Figure 2 This is a side view of the device; Figure 3 This is a top view of the device; Figure 4 This is a rear view of the device; Figure 5 This is a schematic diagram of the interior of the control box of this device. Figure I ; Figure 6 This is a schematic diagram of the interior of the control box of this device. Figure II ; The components include: 1. Fixed base; 2. Take-up assembly; 3. Drive assembly; 4. Conductive transmission assembly; 5. Take-up reel; 6. Charging cable; 7. Motor; 8. Reducer; 9. Slip ring; 10. Rotor side; 11. Stator side; 12. Limit assembly; 13. Mechanical limit module; 14. Limit switch; 15. Trigger block; 16. Control box; 17. Control assembly; 18. Motor control board; 19. Guide assembly; 20. Guide plate; 21. Rubber-coated roller; 22. Guide channel. Detailed Implementation

[0015] The present application will be further described in detail below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 the present utility model 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 the present utility model.

[0016] Reference Figure 1 , Figure 2 , Figure 3 One embodiment shown is as follows: This top-mounted cable reel includes a fixed base 1, a cable take-up assembly 2, a drive assembly 3, and a conductive transmission assembly 4. The fixed base 1 is made of metal, and its lower surface is detachably fixed to the upper surface of the integrated charging pile via bolts. The centerline of the fixed base 1 is aligned vertically with the centerline of the top of the integrated charging pile to ensure no misalignment after installation. The cable take-up reel 5 of the cable take-up assembly 2 has an annular groove in its center, and one end of the charging cable 6 is fixed to the annular groove of the reel 5 via a clip. The charging cable 6 is wound inside the cable groove and the other end of the charging cable 6 is fixedly connected to the charging gun of the charging pile through a connector; the drive component 3 is set on one side above the fixed base 1, and the output end of the drive component 3 is fixedly connected to one end of the take-up reel 5 through a coupling; the conductive transmission component 4 is installed on the other side above the fixed base 1 away from the drive component 3, one end of the conductive transmission component 4 is electrically connected to the power supply end of the charging pile and fixedly connected, and the other end is electrically connected to the charging cable 6 on the take-up reel 5, and the outer layer of the conductor is wrapped with an insulating sleeve and fixed to the side of the fixed base 1 by a wire clip.

[0017] The implementation principle is as follows: When charging is required, the drive component 3 is powered on and operates. Its output end drives the take-up reel 5 to rotate in reverse around its own axis. Under the action of the reverse rotation of the take-up reel 5, the charging cable 6 is gradually released from the annular groove. The user can hold the charging gun and pull the cable to the vehicle's charging interface for charging. After charging is completed, the drive component 3 runs again and drives the take-up reel 5 to rotate forward. The traction force generated during the forward rotation of the take-up reel 5 will rewind the charging cable 6 back into the annular groove, realizing cable storage. Throughout the entire take-up and release process, the conductive transmission component 4 always maintains the conductive connection between the charging cable 6 and the power supply end of the charging pile, avoiding the problem of wire entanglement, pulling and breaking when the cable rotates with the take-up reel 5, ensuring continuous and stable transmission of charging current, without affecting charging efficiency and safety.

[0018] Reference Figure 2 , Figure 3One embodiment shown is as follows: the drive assembly 3 includes a motor 7 and a reducer 8; wherein, the motor 7 is a three-phase asynchronous motor 7, the motor 7 is fixed to the upper surface of the fixed base 1 by a motor bracket, and the bottom of the motor bracket is fixed to the upper surface of the fixed base 1 by welding; the reducer 8 is a planetary gear reducer 8, the housing of the reducer 8 is fixed to the side of the motor bracket by bolts, the output shaft of the motor 7 is inserted into the input end of the reducer 8, and the two are fixedly connected by a flat key; the output shaft of the reducer 8 is fixedly connected to the end of the take-up reel 5 near the reducer 8 by a coupling, and the inner holes at both ends of the coupling are fixed to the output shaft of the reducer 8 and the end shaft of the take-up reel 5 by flat keys respectively.

[0019] The implementation principle is as follows: After the motor 7 is connected to the external power supply, it runs. The output shaft of the motor 7 rotates around its own axis, and the power is transmitted to the input end of the reducer 8 through a key. The planetary gear set inside the reducer 8 reduces the high speed of the motor 7 and amplifies the torque to meet the power required for the take-up reel 5 to drive the cable winding and unwinding. The power processed by the reducer 8 is transmitted to the coupling through the output shaft, and the coupling then transmits the power to the end shaft of the take-up reel 5, driving the take-up reel 5 to rotate synchronously. When the motor 7 rotates forward, the take-up reel 5 rotates forward synchronously, and the cable is wound into the annular groove under the traction force of the take-up reel 5, realizing the cable winding. When the motor 7 rotates in reverse, the take-up reel 5 rotates in reverse synchronously, and the cable is released from the annular groove, realizing the cable unwinding. Through the reduction and torque amplification effect of the reducer 8, it is ensured that the take-up reel 5 can maintain stable rotation when driving cables of different lengths, avoiding speed fluctuations caused by load changes.

[0020] Reference Figure 3 , Figure 4 One embodiment shown is as follows: the conductive transmission component 4 is a slip ring 9, which includes a rotor side 10 and a stator side 11; one end of the fixed bracket is fixed to the side of the fixed base 1 away from the drive component 3 by bolts, and the other end of the fixed bracket is fixedly connected to the outer peripheral surface of the stator side 11 of the slip ring 9 by bolts; the rotor side 10 of the slip ring 9 is located inside the stator side 11, and one end of the rotor side 10 is fixedly connected to the end face of the take-up reel 5 away from the drive component 3 by bolts, and a positioning pin is provided between the rotor side 10 and the take-up reel 5; the conductive terminal of the rotor side 10 of the slip ring 9 is welded to the fixed end of the charging cable 6 by wires, and the weld is wrapped with insulating tape; the conductive terminal of the stator side 11 of the slip ring 9 is welded to the power supply end of the charging pile by wires, and both wires are wrapped with insulating sleeves and fixed to the side of the fixed base 1 by wire clips.

[0021] The implementation principle is as follows: When the take-up reel 5 rotates around its own axis under the drive of the drive component 3, the take-up reel 5 drives the rotor side 10 of the slip ring 9 to rotate synchronously through bolts and positioning pins, while the stator side 11 of the slip ring 9 remains stationary under the fixing action of the fixed bracket; the rotor side 10 and stator side 11 inside the slip ring 9 are in continuous contact through graphite contacts. Even if the rotor side 10 rotates with the take-up reel 5, the graphite contacts can always maintain a good conductive connection, thereby transmitting the current from the charging pile power supply end to the stator side 11 of the slip ring 9 through the wire, then to the rotor side 10 of the slip ring 9 through the graphite contacts, and finally to the charging cable 6 through the wire; this process realizes the conductive transition of the charging cable 6 from a fixed state (stator side 11 connected to the power supply end) to a rotating state (rotor side 10 connected to the cable), effectively avoiding the problem of wire entanglement, pulling and breaking when the cable rotates with the take-up reel 5, and ensuring stable transmission of charging current.

[0022] Reference Figure 5 , Figure 6 One embodiment shown is as follows: the limit assembly 12 includes limit switches 14, trigger blocks 15, and a control box 16; wherein, the control box 16 has a rectangular box structure, the bottom of the control box 16 is fixed to the upper surface of the fixed base 1 by bolts, and the control box 16 is located between the drive assembly 3 and the conductive transmission assembly 4. The front side of the control box 16 is provided with a detachable cover plate, which is connected to the main body of the control box 16 by bolts, facilitating the maintenance of internal components; two limit switches 14 are respectively symmetrically fixed to both sides inside the control box 16 by bolts; inside the control box 16, a rotating screw is rotatably connected by bearings, and the axis of the rotating screw is set in the horizontal direction. One end of the rotating lead screw is fixedly connected to a driven bevel gear via a flat key. The output end of the reducer 8 is fixedly connected to a driving bevel gear via a flat key on the side near the control box 16. The driving bevel gear and the driven bevel gear are connected by meshing transmission. The center of the trigger block 15 has a threaded hole that matches the rotating lead screw. The trigger block 15 is threadedly connected to the rotating lead screw through the threaded hole. Inside the control box 16, a guide block is also fixed by bolts. The guide block is set in the horizontal direction. The front and rear sides of the trigger block 15 have sliding grooves that match the guide block. The trigger block 15 is slidably connected to the guide block through the sliding grooves. Lubricant is applied between the sliding grooves and the guide block to reduce sliding friction.

[0023] In this embodiment, the limit switch 14 is a travel switch with a contact triggering method. The height of the trigger block 15 is consistent with the height of the trigger end of the limit switch 14, ensuring that the trigger block 15 can accurately contact the trigger end when it moves. The contact end of the trigger block 15 is covered with a rubber pad to avoid damage caused by rigid collision with the limit switch 14. The thread direction of the rotating screw matches the rotation direction of the take-up reel 5. For example, when the take-up reel 5 rotates clockwise, the rotating screw rotates synchronously to move the trigger block 15 to the left. When the take-up reel 5 rotates counterclockwise, the trigger block 15 moves to the right. The length of the guide block covers the movement range of the trigger block 15, ensuring that the trigger block 15 always slides smoothly in the horizontal direction without deviation or jamming.

[0024] The implementation principle is as follows: When the reducer 8 drives the take-up reel 5 to rotate, the drive pulley at the output end of the reducer 8 rotates synchronously, driving the driven pulley outside the control box 16 to rotate via the belt. The driven pulley drives the rotating screw to rotate around its own axis. When the rotating screw rotates, the thread on its outer circumference engages with the threaded hole of the trigger block 15, pushing the trigger block 15 to slide horizontally along the guide block. When the take-up reel 5 performs cable winding operation, the take-up reel 5 rotates forward, and the rotating screw rotates synchronously forward. The trigger block 15 moves towards the limit switch 14 on the left side of the control box 16. As the cable is continuously wound, the take-up reel 5 gradually approaches the limit position of complete winding. When the cable is completely wound, the trigger block 15... The take-up reel 5 moves precisely to the left limit switch 14 and contacts the trigger end of the limit switch 14. After the limit switch 14 is triggered, it sends a stop signal to the control component 17. After receiving the signal, the control component 17 controls the drive component 3 to stop running, and the take-up reel 5 stops rotating. When the take-up reel 5 performs cable dispensing operation, the take-up reel 5 reverses, and the rotating screw reverses synchronously. The trigger block 15 moves towards the right limit switch 14 near the control box 16. When the cable is completely dispensed to the preset length, the trigger block 15 contacts the trigger end of the right limit switch 14, and the limit switch 14 triggers a stop signal. The drive component 3 stops running, effectively preventing the take-up reel 5 from rotating excessively, which could cause cable damage or device malfunction.

[0025] Reference Figure 5 , Figure 6One embodiment shown is as follows: the control component 17 includes a motor control board 18, a manual control box, and a wireless remote controller; wherein, the motor control board 18 adopts a PCB circuit board structure, and the motor control board 18 is fixed inside the control box 16 by an insulating bracket, and the bottom of the insulating bracket is fixed to the bottom wall of the control box 16 by bolts; the signal output terminal of the motor control board 18 is connected to the control line of the motor 7 of the drive component 3 by a wire, and the connection of the wire is fixed by a terminal block; the power supply terminal of the motor control board 18 is connected to an external power source by a wire; the manual control box is a handheld structure, the shell is made of ABS insulating plastic, and the box is equipped with a forward rotation button, a reverse rotation button, and a stop button, all of which are self-resetting; the manual control box is plugged into the external interface of the motor control board 18 by a cable, the outer layer of the cable is wrapped with a wear-resistant insulating sleeve, and the length of the cable is designed according to the distance of the parking spaces in the charging station, usually 3-5 meters, for convenient operation by the user on the ground; the shell of the wireless remote controller is made of ABS insulating plastic, and a wireless signal transmitter is installed inside; a wireless signal receiver is soldered and fixed on the motor control board 18, and the wireless signal receiver is electrically connected to the motor control board 18.

[0026] In this embodiment, the motor control board 18 integrates a signal processing module, a drive module, and a protection module. The signal processing module is used to analyze the command signals sent by the manual control box and the wireless remote controller. The drive module is used to output the corresponding control current to the motor 7 according to the command signals, controlling the start, stop, and direction of the motor 7. The protection module automatically cuts off the power supply to the motor 7 when the motor 7 experiences abnormal conditions such as overload, overcurrent, or overvoltage, protecting the motor 7 and the device. The buttons on the manual control box have anti-slip textures and are clearly marked with function labels for easy user identification and operation. The wireless remote controller uses a rechargeable lithium battery, and a power indicator light is provided on the remote controller to remind the user to charge it in time. The motor control board 18 is also connected to a status indicator light, which is installed on the cover of the control box 16 to display the operating status of the device.

[0027] The implementation principle is as follows: When the user selects manual control mode, holding the manual control box and pressing the forward button, the manual control box transmits the forward rotation command electrical signal to the signal processing module of the motor control board 18 through the cable. After the signal processing module analyzes the signal, it sends a control command to the drive module. The drive module outputs forward rotation current to the motor 7, and the motor 7 rotates forward to drive the take-up reel 5 to wind up the cable. When the reverse button is pressed, the reverse rotation command signal is transmitted in the same way, and the motor 7 reverses to drive the take-up reel 5 to unwind the cable. When the stop button is pressed, the stop command signal is transmitted, the drive module cuts off the power to the motor 7, and the motor 7 stops running. When the user selects wireless control mode, pressing the corresponding button on the wireless remote control, the wireless signal transmitter inside the remote control sends the command signal wirelessly. After the wireless signal receiver on the motor control board 18 receives the signal, it is transmitted to the signal processing module. The subsequent control process is the same as manual control. The two control modes can be flexibly switched to meet the operational needs of different scenarios. For example, the user can use the wireless remote control next to the parking space and the manual control box near the control box 16, improving the convenience of operation.

[0028] Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 One embodiment shown is as follows: the guide assembly 19 includes a guide plate 20 and four rubber-coated rollers 21; wherein, the guide plate 20 is a rectangular metal plate, one edge of which is fixedly connected to the side of the fixed base 1 away from the conductive transmission component 4 by welding, the welding adopts a double-sided full welding process, and the weld height is consistent with the thickness of the guide plate 20 to ensure that the connection strength is sufficient to withstand the tension during cable winding and unwinding; the included angle between the guide plate 20 and the fixed base 1 is 90 degrees (i.e., the guide plate 20 is perpendicular to the side of the fixed base 1), and the center line of the guide plate 20 and the center line of the take-up reel 5 are in the same vertical plane to ensure that the cable is wound from the take-up reel 5. After the cable reel 5 is released, it can accurately enter the guide channel 22 in a straight line. The main body of the four rubber-coated rollers 21 is a metal roller. The outer circumference of the metal roller is coated with a rubber layer of uniform thickness through a high-temperature vulcanization process. The rubber layer is made of nitrile rubber, which is resistant to aging, wear-resistant and has excellent elasticity. The thickness of the rubber layer is designed to be adapted to the diameter of the cable, so as to avoid damage to the cable by hard contact and provide sufficient friction to prevent slippage. Each rubber-coated roller 21 has a metal shaft coaxially formed at both ends. The outer circle of the shaft is precision ground to ensure smooth rotation. The guide channel 22 is formed by the outer circles of the four rubber-coated rollers 21.

[0029] The implementation principle of the above embodiment is as follows: When the take-up reel 5 performs cable dispensing operation, the take-up reel 5 reverses to release the cable. Under the combined action of its own gravity and the user's pulling, the cable moves horizontally out of the annular groove of the take-up reel 5 and enters the guide channel 22. Since the four rubber-coated rollers 21 are on the same horizontal plane and are located on the four sides of the guide channel 22 respectively, the cable will contact the rubber layer surface of the four rubber-coated rollers 21 when it moves. The moving friction of the cable drives the four rubber-coated rollers 21 to rotate synchronously around their own axis (the rotation direction is adapted to the cable moving direction), completely converting the sliding friction that may occur between the cable and the guide plate 20 into rolling friction, greatly reducing the cable moving resistance, and avoiding the wear of the insulation layer caused by the cable being subjected to force on one side or contacting the hard edge of the guide plate 20. When the take-up reel 5 performs cable winding operation, the take-up reel 5 rotates forward. The cable is pulled horizontally along the guide channel 22 towards the take-up reel 5 by the traction force. At this time, the cable pushes the four rubber-coated rollers 21 to rotate in the opposite direction. The rolling friction can still effectively reduce wear. Moreover, the four rubber-coated rollers 21 form a four-way surrounding limit on the same horizontal plane, which can strictly limit the deviation of the cable in the horizontal and vertical directions. Even if there is a momentary fluctuation in the traction force, the cable can always move along the central axis of the guide channel 22, ensuring that it is accurately and evenly wound in the annular groove of the take-up reel 5, avoiding cable overlap or uneven winding. In addition, the elasticity of the rubber layer can buffer the instantaneous tension when the cable is retracted or extended (such as when the user suddenly releases the cable or the retraction speed changes), absorb the impact energy, and prevent the cable from being deformed locally or the insulation layer from cracking due to impact force, further extending the service life of the cable and ensuring the long-term stable operation of the charging pile.

[0030] The working principle of this device is as follows: The device is mounted on top of the charging pile via a fixed base 1. When charging is required, the user sends a command via the control component 17 (manual box / wireless remote control). The motor control board 18 drives the drive component 3 to operate. After the motor 7 is reduced in speed and torque is increased by the reducer 8, it drives the take-up reel 5 to reverse. The cable is released from the take-up reel 5 and moves horizontally through the channel enclosed by the four-way rubber-coated roller 21 of the guide component 19, allowing the user to pull the charging gun. The rotor of the slip ring 9 of the conductive transmission component 4 rotates with the take-up reel 5, while the stator is fixed, ensuring continuous conductivity for charging. After charging is completed, the control component 17 drives the take-up reel 5 to rotate forward to take in the cable. The cable winds back onto the take-up reel 5 along the guide channel 22. During take-up and release, the rotating screw of the limit component 12 rotates with the reducer 8, causing the trigger block 15 to move. When it reaches the limit position, it triggers the limit switch 14, stopping the drive component 3 to prevent damage to the cable from over-take-up or over-release, thus achieving safe and efficient cable take-up and release and protection.

[0031] The working principle of this device has been explained through the above embodiments. These embodiments only illustrate several implementation methods of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A top-mounted cable reel for charging piles, characterized in that: The device includes a fixed base (1), a take-up assembly (2), a drive assembly (3), and a conductive transmission assembly (4). The fixed base (1) is used to connect to the top of the integrated charging pile to fix the entire device. The take-up assembly (2) includes a take-up reel (5) for winding the charging cable (6) of the charging pile. The drive assembly (3) is connected to the take-up reel (5) and is used to drive the take-up reel (5) to rotate forward or backward to release or rewind the charging cable (6). The conductive transmission assembly (4) is used to achieve conductive connection of the charging cable (6) from a fixed state to a rotating state to ensure stable current transmission during charging.

2. The top-mounted cable reel for a charging pile according to claim 1, characterized in that: The drive assembly (3) includes a motor (7) and a reducer (8). The output end of the motor (7) is connected to the input end of the reducer (8), and the output end of the reducer (8) is connected to the take-up reel (5). The motor (7) outputs power, which is reduced by the reducer (8) and drives the take-up reel (5) to rotate, thereby adjusting the rotation speed and torque of the take-up reel (5).

3. The top-mounted cable reel for a charging pile according to claim 2, characterized in that: The conductive transmission component (4) is a slip ring (9), which includes a rotor side (10) and a stator side (11). The rotor side (10) rotates synchronously with the take-up reel (5) and is connected to the movable end of the charging cable (6). The stator side (11) is fixedly installed and connected to the power supply end of the charging pile.

4. A top-mounted cable reel for a charging pile according to claim 3, characterized in that: It also includes a limit component (12), which is a mechanical limit module (13). The mechanical limit module (13) includes a limit switch (14), a trigger block (15), and a control box (16). The control box (16) is mounted on the mounting base. There are two limit switches (14), which are respectively located on both sides inside the control box (16). A rotating screw is provided inside the control box (16). A trigger block (15) is threadedly connected to the top of the rotating screw. A guide block is also provided inside the control box (16). The trigger block (15) can slide horizontally on the guide block. The end of the rotating screw is connected to the output end of the reducer (8). When the take-up reel (5) rotates to the preset limit position, the trigger block (15) moves to the trigger end of the limit switch (14) on the corresponding side and triggers a stop signal to prevent the take-up reel (5) from rotating excessively, which could cause cable damage or device failure.

5. A top-mounted cable reel for a charging pile according to claim 4, characterized in that: It also includes a control component (17), which includes a motor control board (18), a manual control box and a wireless remote controller. The motor control board (18) is fixedly installed in the control box (16). The motor control board (18) is electrically connected to the motor (7) of the drive component (3). The manual control box is electrically connected to the motor control board (18) through a wire. The wireless remote controller is wirelessly connected to the motor control board (18).

6. A top-mounted cable reel for a charging pile according to claim 1, characterized in that: It also includes a guide assembly (19), which includes a guide plate (20) and at least two rubber-coated rollers (21); the guide plate (20) is fixed to one side of the fixed base (1), the rubber-coated rollers (21) are rotatably mounted on the guide plate (20), and a guide channel (22) is formed between the two rubber-coated rollers (21) for the charging cable (6) to pass through; during the dispensing or rewinding of the charging cable (6), it moves along the guide channel (22), and the rubber-coated rollers (21) reduce the frictional damage between the charging cable (6) and the guide plate (20).

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