An electric take-up device applied to a charging pile
By designing an electric cable retractor, which utilizes a motor drive and a guide block and cable pressing wheel structure, the problem of cable wear in charging piles is solved, enabling safe and efficient cable recycling and reducing maintenance costs and failure risks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AOWANG TIMES TECHNOLOGY (ZHEJIANG) CO LTD
- Filing Date
- 2025-09-23
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional charging pile cables are prone to wear and tear when exposed to the ground for extended periods, leading to risks of electric shock, short circuits, equipment malfunctions, and signal interference. Furthermore, frequent replacements are costly.
Design an electric cable retractor comprising a storage box, a cable reel, a drive motor, and a limiting groove. The cable is retracted by the motor, and a guide block and a pressure wheel are used to reduce wear. A signal cable is also provided to enable automatic retrieval and waterproof and dustproof operation.
It effectively reduces cable wear, lowers equipment maintenance costs, improves safety, expands applicable scenarios, prevents water from entering the storage box, and reduces the risk of failure.
Smart Images

Figure CN224530309U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of charging equipment technology, and relates to a cable retractor, particularly an electric cable retractor used in charging piles. Background Technology
[0002] A charging station is a device specifically designed to replenish the power of electric vehicles, safely charging the vehicle's battery with electricity from the power grid. The charging station is a "power station" fixed on the ground, responsible for providing power; the charging gun is a "switch valve" that is inserted into the car's charging interface, responsible for conducting electrical energy; and the cables connecting them are the connecting units for transmitting power.
[0003] The core structure of the cable consists of multiple copper conductors, an insulating layer encasing the conductors, a shielding layer for electromagnetic shielding, and an outermost weather-resistant and wear-resistant rubber sheath. For high-power DC charging piles, the cable also typically contains signal and control lines for data transmission. Traditional charging piles use longer cables to accommodate different vehicles, but these longer cables are placed on the ground. Over time, friction with the ground can cause wear and tear, leading to risks of electric shock, short circuits, equipment malfunctions, and signal interference. This severely impacts the use of the charging pile, and frequent cable replacements are costly. Summary of the Invention
[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing an electric cable retractor for use in charging piles to reduce wear.
[0005] The objective of this utility model can be achieved through the following technical solution: An electric cable retractor for use in charging piles, characterized in that it includes a storage box and a cable reel, the cable reel being placed inside the storage box, the cable reel being provided with a spiral cable, and the cable reel being provided with a limiting groove for limiting the spiral cable, the end of the cable reel being provided with an input end of the spiral cable, the end of the spiral cable being provided with an output cable, and the end of the output cable being provided with a charging gun, a drive box being provided on one side of the storage box, the drive box being provided with a drive motor connected to the cable reel, a mounting base for fixing the charging gun being provided on the side wall of the drive box, a touch switch being provided on the mounting base, the charging gun being in contact with the touch switch, and an external signal cable being provided on the drive motor.
[0006] In the above-mentioned electric cable retractor used in charging piles, the storage box has an opening window on its side wall, and the opening window has guide angles on both the upper and lower sides. The opening window has a guide block, and the guide block has a wire pressing unit. The wire pressing unit has two symmetrical wire pressing wheels. The guide block has a roller rod, and the guide block has a cable through hole.
[0007] In the aforementioned electric retractor used in charging piles, bearings are provided at both ends of the winding drum.
[0008] In the aforementioned electric retractor used in charging piles, the guide block is provided with telescopic corrugated covers on both sides.
[0009] Compared with existing technologies, this electric cable retractor for charging piles controls cable retrieval through motor drive, reducing wear and tear caused by the exposed rubber layer of the cable moving on the ground due to excessive cable length, thus reducing equipment usage and maintenance costs. The motor drive can be combined with various trigger signals to achieve retrieval, increasing the applicable scenarios. The cable pressing wheel can guide and reduce cable wear, while also reducing the amount of water entering the storage box. Attached Figure Description
[0010] Figure 1 This is a structural schematic diagram of an electric cable retractor used in charging stations.
[0011] Figure 2 This is a schematic diagram of the structure of an electric cable retractor used in charging piles for removing spiral cables.
[0012] Figure 3 This is a cross-sectional structural diagram of the housing of an electric retractor used in charging piles.
[0013] In the diagram, 1. Input terminal; 2. Storage box; 3. Wire pressing unit; 4. Spiral cable; 5. Drive box; 6. Charging gun; 7. Output cable; 8. Guide block; 9. Guide tilt angle; 10. Cable through hole; 11. Wire pressing wheel; 12. Touch switch; 13. Roller rod; 14. Telescopic corrugated cover; 15. Bearing; 16. Limiting groove; 17. Rope winding drum; 18. Signal cable; 19. Drive motor; 20. Mounting base; 21. Opening window. Detailed Implementation
[0014] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0015] like Figure 1 , 2As shown in Figure 3, the electric cable retractor used in charging piles includes a storage box 2 and a cable reel 17. The cable reel 17 is placed inside the storage box 2. A spiral cable 4 is provided on the cable reel 17, and a limiting groove 16 is provided on the cable reel 17 to limit the spiral cable 4. The end of the cable reel 17 is provided with an input end 1 of the spiral cable 4. The end of the spiral cable 4 is provided with an output cable 7, and the end of the output cable 7 is provided with a charging gun 6. A drive box 5 is provided on one side of the storage box 2. The drive box 5 is provided with a drive motor 19 connected to the cable reel 17. A mounting base 20 for fixing the charging gun 6 is provided on the side wall of the drive box 5. A touch switch 12 is provided on the mounting base 20. The charging gun 6 abuts against the touch switch 12. The drive motor 19 is provided with... There is an external signal cable 18. When in use, the charging gun 6 is pulled to make the rope drum 17 roll. At the same time, the spiral cable 4 is stretched out of the storage box 2. The outer rubber sheath of the output cable 7 at the end is thin, which makes it easy to bend and adapt to the different charging port positions of different vehicles. When retracting, the motor starts and the cable is wound back by the rope drum 17 and distributed along the limiting groove 16. When the charging gun is not returned after charging, the charging lock triggers the loss switch and drives the motor 19 to start actively retracting the cable to reduce the contact of the cable exposed to the ground. The signal cable 18 can be connected to the charging pile. When the user fails to return the charging gun 6 properly after charging, the motor will also start, which can be used to punish the user in accordance with the equipment usage rules.
[0016] Preferably, the storage box 2 has an opening window 21 on its side wall. The opening window 21 has guide angles 9 on both the upper and lower sides. The opening window 21 has a guide block 8, and the guide block 8 has a wire pressing unit 3. The wire pressing unit 3 has two symmetrical wire pressing wheels 11. The guide block 8 has a roller rod 13, and the guide block 8 has a cable through hole 10. The wire pressing wheel 11 presses the spiral cable 4, and the guide block 8 moves left and right as the cable is pulled out and retracted. When the screw-screw cable is pulled out, the wire pressing wheel 11 has the function of guiding the top wheel, reducing cable wear. The lower wire pressing wheel 11 can also guide water on the cable, preventing excessive water from entering the storage box in case of rain or other situations.
[0017] Preferably, the rope winding drum 17 is provided with bearings 15 at both ends. Preferably, the guide block 8 is provided with telescopic corrugated covers 14 on both sides, which can reduce dust and water from entering the storage box 2.
[0018] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
[0019] Although this document frequently uses terms such as input terminal 1, storage box 2, wire pressing unit 3, spiral cable 4, drive box 5, charging gun 6, output cable 7, guide block 8, guide tilt angle 9, cable through hole 10, wire pressing wheel 11, touch switch 12, roller rod 13, telescopic corrugated cover 14, bearing 15, limiting groove 16, rope winding drum 17, signal cable 18, drive motor 19, mounting base 20, and opening window 21, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.
Claims
1. An electric cable retractor for use in charging piles, characterized in that, The device includes a storage box (2) and a rope drum (17). The rope drum (17) is placed inside the storage box (2). The rope drum (17) is provided with a spiral cable (4) and a limiting groove (16) for limiting the spiral cable (4). The end of the rope drum (17) is provided with an input end (1) of the spiral cable (4). The end of the spiral cable (4) is provided with an output cable (7) and a charging gun (6) is provided at the end of the output cable (7). A drive box (5) is provided on one side of the storage box (2). The drive box (5) is provided with a drive motor (19) connected to the rope drum (17). The side wall of the drive box (5) is provided with a mounting base (20) for fixing the charging gun (6). The mounting base (20) is provided with a touch switch (12). The charging gun (6) is in contact with the touch switch (12). The drive motor (19) is provided with an external signal cable (18).
2. The electric cable retractor for use in charging piles according to claim 1, characterized in that, The storage box (2) has an opening window (21) on its side wall. The opening window (21) has guide angles (9) on both the upper and lower sides. The opening window (21) has a guide block (8) and a wire pressing unit (3) on the guide block (8). The wire pressing unit (3) has two symmetrical wire pressing wheels (11). The guide block (8) has a roller rod (13) and a cable through hole (10) on the guide block (8).
3. The electric cable retractor for use in charging piles according to claim 1, characterized in that, The rope drum (17) is equipped with bearings (15) at both ends.
4. An electric cable retractor for use in charging piles according to claim 2, characterized in that, The guide block (8) is provided with telescopic corrugated covers (14) on both sides.