A charging cable winding device for a charging pile

Abstract

The application relates to the technical field of charging piles, and discloses a charging cable winding device for a charging pile, which comprises a fixed cylinder fixed with a charging pile body, a center shaft coaxially arranged in the fixed cylinder, a sleeve ring gap-fitted on the outer side of the fixed cylinder, a rotating ring axially displaceable and self-rotatable sleeved on the outer side of the center shaft, and the rotating ring is synchronously rotated and axially displaced with the sleeve ring; the sleeve ring is matched with a wire arrangement structure to guide and limit the charging cable, so that the cable is spirally wound on the outer wall of the fixed cylinder. The application has a reasonable structure design, can realize automatic spiral winding and extension release of the charging cable, can neatly and orderly store the charging cable, can effectively prevent the charging cable from being twisted, abraded, randomly accumulated and the like, can reduce safety hazards and cable loss, and can realize convenient automatic winding and unwinding operation, stable and reliable operation and adaptation to long-term use requirements of various charging piles.

Description

Technical Field

[0001] This invention relates to the field of charging piles, and in particular to a charging cable winding device for charging piles. Background Technology

[0002] With the rapid development of the new energy electric vehicle industry, the use of charging piles is becoming increasingly common. As a key component of charging piles, charging cables directly affect the daily charging experience. Currently, most charging cables in conventional charging piles on the market are externally suspended, lacking a neat winding structure. Cables are often exposed and randomly placed, dragged and piled up, not only taking up space and creating a messy appearance, but also prone to problems such as cable twisting, bending, sheath wear and aging, and compression damage, significantly shortening the cable's lifespan. Meanwhile, manual cable winding is cumbersome and laborious, resulting in poor neatness. Long-term messy placement can also easily lead to safety hazards such as tripping, aging wires, and short circuits. Existing simple winding structures mostly only achieve single-winding winding, failing to ensure a uniform spiral arrangement of the cable. During winding and unwinding, the cable is prone to jamming and tangling, lacking sufficient winding stability and protection, making it difficult to meet the requirements for long-term stable and safe use. Therefore, this invention proposes a charging cable winding device for charging piles to solve the above problems. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a charging cable winding device for charging piles.

[0004] The charging cable winding device for charging piles provided by this invention adopts the following technical solution:

[0005] A charging cable winding device for a charging pile includes a fixed cylinder that is fixedly connected to the charging pile body. A central shaft is coaxially fixedly connected to the axis of the fixed cylinder. A collar with clearance fit is coaxially provided on the outside of the fixed cylinder. A rotating ring is coaxially provided on the outside of the central shaft. The rotating ring rotates when it is displaced along the axial direction of the central shaft. The rotating ring and the collar rotate synchronously and displace axially synchronously.

[0006] A cable is also fixedly connected to the collar. The fixed end of the cable passes through the fixed cylinder, and the free end of the cable extends outward to the charging pile. The collar is also provided with a cable management structure for routing the cable, so that the cable is spirally wound around the outer wall of the fixed cylinder.

[0007] Preferably, the central shaft is provided with a bidirectional threaded groove, and two pins are symmetrically arranged on the inner wall of the rotating ring. The two pins are respectively slidably embedded in one of the bidirectional threaded grooves. A bracket for welding to each other is provided between the rotating ring and the collar. The bracket has a U-shaped structure in frontal view and its height is greater than the height of the fixed cylinder.

[0008] Preferably, the center of the rotating ring is recessed downwards, and a movable ring is coaxially slidably embedded at the recessed position. A threaded ring is symmetrically arranged on the outer center of the movable ring. The inner thread of the threaded ring is connected to a threaded rod parallel to the axis of the fixed cylinder. A top ring is fixedly connected to the end of the fixed cylinder. A driving assembly is fixed on the top ring. The driving assembly and the threaded rod passing through the top ring are connected by transmission.

[0009] Preferably, the cable management structure includes a guide rod fixed to the inner wall of the collar and arranged along the radial direction of the fixed cylinder. The cable management structure also includes two guide wheels arranged on the outer side of the top of the collar. The cable passes between the two guide wheels and is pressed by the guide rod towards the end of the fixed cylinder.

[0010] Preferably, the cable management structure further includes a top cover snapped onto the top of the fixed cylinder, and a guide tube is rotatably mounted on the top cover. The cable passes through the guide tube, through the gap between the two guide wheels, and is located below the guide rod.

[0011] Preferably, the guide wheel and the guide rod have a certain angle between them, and their setting direction is the same as the winding direction of the cable on the fixed cylinder.

[0012] Preferably, the guide tube has a two-section structure, with its top end and fixed cylinder coaxially arranged, and its bottom end facing the gap between the two guide wheels. The two sections are connected by a tangent arc segment.

[0013] Preferably, the central shaft is fixed at the bottom center of the top cover, the threaded rod is rotatably connected to the bottom of the top cover, and at least two threaded rods are provided.

[0014] In summary, the present invention has at least one of the following beneficial technical effects:

[0015] Through a coaxially coupled rotational and axial displacement linkage structure, combined with a bidirectional threaded drive and a rationalized structure, the charging cable can be automatically and uniformly wound and unwound in a spiral motion. The winding and unwinding process is smooth and stable, effectively avoiding problems such as cable kinking, bending, and stacking. The overall structure is compact and reasonable, relying on a fixed cylinder as the winding base, so that the cable is neatly and snugly arranged after storage, greatly reducing space occupation and avoiding wear and aging damage caused by long-term exposed dragging of the cable, thus extending the cable's service life. The integrated drive realizes automated cable winding and unwinding operations, eliminating the need for manual handling and storage, making it convenient and labor-saving. At the same time, the cable routing is guided, limited, and compressed throughout the process, reducing friction loss and the risk of hard bending during winding and unwinding, avoiding safety hazards such as leakage and short circuits caused by line damage, improving the safety of charging piles and their adaptability to outdoor environments. The structure has strong linkage, stable operation, and significantly improved practicality and durability. Attached Figure Description

[0016] Figure 1This is an isometric structural schematic diagram of an embodiment of the invention.

[0017] Figure 2 This is a bottom-view isometric structural schematic diagram of an embodiment of the invention.

[0018] Figure 3 This is an exploded view of an embodiment of the invention.

[0019] Figure 4 This is a structural diagram of the transmission mechanism according to an embodiment of the invention.

[0020] Figure 5 This is a longitudinal sectional view of an embodiment of the invention.

[0021] Figure 6 This is an enlarged view of section A in the embodiment of the invention.

[0022] Explanation of reference numerals in the attached drawings: 1. Fixed cylinder; 2. Collar; 3. Bracket; 4. Top ring; 5. Drive assembly; 6. Cable; 7. Guide tube; 8. Guide wheel; 9. Guide rod; 10. Rotary ring; 1001. Pin; 11. Central shaft; 111. Bidirectional threaded groove; 12. Top cover; 13. Threaded rod; 14. Movable ring; 141. Threaded ring. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6 The present invention will be described in further detail below.

[0024] Example 1: Refer to Figure 1 - Figure 6 A charging cable winding device for a charging pile includes a fixed cylinder 1 fixedly connected to the charging pile body. A central shaft 11 is coaxially fixedly connected to the axis of the fixed cylinder 1. A collar 2 with clearance fit is coaxially arranged on the outside of the fixed cylinder 1. A rotating ring 10 coaxially arranged on the outside of the central shaft 11 is slidably sleeved on the outside of the central shaft 11. The rotating ring 10 rotates when it is axially displaced along the central shaft 11. The rotating ring 10 and the collar 2 rotate synchronously and move axially synchronously.

[0025] A cable 6 is also fixedly connected to the collar 2. The fixed end of the cable 6 passes through the fixed cylinder 1, and the free end of the cable 6 extends to the outside of the charging pile. The collar 2 is also provided with a cable management structure for routing the cable 6, so that the cable 6 is spirally wound around the outer wall of the fixed cylinder 1.

[0026] Furthermore, a bidirectional threaded groove 111 is provided on the central shaft 11, and two pins 1001 are symmetrically arranged on the inner wall of the rotating ring 10. The two pins 1001 are respectively slidably embedded in one of the bidirectional threaded grooves 111. A bracket 3 for welding to each other is provided between the rotating ring 10 and the collar 2. The bracket 3 has a U-shaped structure in front view and its height is greater than the height of the fixed cylinder 1. The bracket 3 ensures the synchronous rotation and synchronous displacement between the rotating ring 10 and the collar 2. The bidirectional threaded groove 111 and the pins 1001 ensure that when the rotating ring 10 is displaced along the axial direction of the central shaft 11, the rotating ring 10 rotates under the action of the bidirectional threaded groove 111. When the displacement direction changes, the rotation direction of the rotating ring 10 changes synchronously, thereby realizing the bidirectional helical winding of the cable 6 on the outer wall of the fixed cylinder 1.

[0027] Furthermore, the center of the rotating ring 10 is recessed downwards, and a movable ring 14 is coaxially slidably embedded in the recessed position. A threaded ring 141 is symmetrically arranged on the outer center of the movable ring 14. The inner thread of the threaded ring 141 is threadedly connected to a threaded rod 13 parallel to the axis of the fixed cylinder 1. A top ring 4 is fixedly connected to the end of the fixed cylinder 1, and a drive assembly 5 is fixed on the top ring 4. The drive assembly 5 and the threaded rod 13 penetrating the top ring 4 are connected by a transmission connection. The threaded rod 13 rotates under the drive of the drive assembly 5. The threaded connection between the threaded rod 13 and the threaded ring 141 causes the threaded ring 14 to move along the axis of the central axis 11 when the threaded rod 13 rotates. The rotatable connection between the movable ring 14 and the rotating ring 10 ensures that when the movable ring 14 moves, it drives the rotating ring 10 to move synchronously without affecting the rotation of the rotating ring 10.

[0028] Furthermore, the cable management structure includes a guide rod 9 fixed to the inner wall of the collar 2 and arranged along the radial direction of the fixed cylinder 1. The structure also includes two guide wheels 8 located on the outer side of the top of the collar 2. The cable 6 passes between the two guide wheels 8, and the guide rod 9 presses the cable 6 towards the end of the fixed cylinder 1. The guide rod 9 presses the cable 6 against the outer wall of the fixed cylinder 1, ensuring that the cable 6 fits snugly against the outer wall of the fixed cylinder 1. The two guide wheels 8 limit the direction of the cable 6's movement, preventing the cable 6 from shifting during movement.

[0029] Furthermore, the cable management structure also includes a top cover 12 that is snapped onto the top of the fixed cylinder 1. A guide tube 7 is rotatably mounted on the top cover 12. The cable 6 passes through the guide tube 7, through the gap between the two guide wheels 8, and is located below the guide rod 9. The guide tube 7 guides the cable 6 in its routing direction, preventing the cable 6 from bending at the top of the fixed cylinder 1. At the same time, the guide tube 7 can rotate to a certain extent as the cable 6 is pulled, preventing the cable 6 from being damaged due to bending at the same angle for a long time.

[0030] Furthermore, the guide wheel 8 and the guide rod 9 have a certain included angle, and their setting direction is the same as the winding direction of the cable 6 on the fixed cylinder 1. This setting ensures that the cable 6 can move along the tangential direction of the spiral winding during movement, avoiding twisting of the cable 6 and reducing wear on the cable 6.

[0031] Furthermore, the guide tube 7 has a two-section structure, with its top end coaxially arranged with the fixed cylinder 1, and its bottom end facing the gap between the two guide wheels 8. The two sections are connected by a tangent arc segment. This design ensures that the cable 6 will not experience significant bending when moving within the guide tube 7, reducing bending losses and extending the service life of the cable 6.

[0032] Furthermore, the central shaft 11 is fixed at the bottom center of the top cover 12, and the threaded rod 13 is rotatably connected to the bottom of the top cover 12. At least two threaded rods 13 are provided. The top cover 12 provides an installation position for the central shaft 11 and the threaded rod 13, and also seals the top of the fixed cylinder 1 to prevent dust from entering the device. The presence of more than two threaded rods 13 ensures the stability of the displacement of the movable ring 14.

[0033] Working principle:

[0034] In use, when it is necessary to pull out the cable 6, the drive assembly 5 drives the threaded rod 13 to rotate. The threaded rod 13 drives the threaded ring 141 to move closer to the top ring 4. The threaded ring 141 drives the movable ring 14 to move. The movable ring 14 drives the rotating ring 10 to move synchronously. During the displacement process, the pin 1001 slides in the bidirectional threaded groove 111, causing the rotating ring 10 to rotate. The rotating ring 10 drives the collar 2 to rotate and move synchronously through the bracket 3. The guide rod 9 and guide wheel 8 on the collar 2 move synchronously. Under the guidance of the guide tube 7, guide wheel 8 and guide rod 9, the cable 6 gradually loosens from the outer wall of the fixed cylinder 1, realizing the pull-out of the cable 6.

[0035] When it is necessary to rewind the cable 6, the drive assembly 5 drives the threaded rod 13 to rotate in the opposite direction. The threaded rod 13 drives the threaded ring 141 to move closer to the top cover 12. The rotating ring 10 rotates in the opposite direction, and the collar 2 rotates and moves in the opposite direction synchronously. Under the pressure of the guide rod 9 and the guidance of the guide wheel 8, the cable 6 is re-spirally wound on the outer wall of the fixed cylinder 1, completing the winding of the cable 6.

[0036] In this solution, the cable 6 remains in contact with the outer wall of the fixed cylinder 1 during the pulling and winding process, which avoids twisting and bending of the cable 6, effectively reduces wear on the cable 6, and extends the service life of the cable 6. At the same time, the device has a simple structure, is easy to operate, and is suitable for widespread use.

[0037] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A charging cable winding device for charging piles, characterized in that: The device includes a fixed cylinder (1) that is fixedly connected to the charging pile body. A central shaft (11) is coaxially fixedly connected at the axial position of the fixed cylinder (1). A collar (2) with clearance fit is coaxially provided on the outside of the fixed cylinder (1). A rotating ring (10) is coaxially provided on the outside of the central shaft (11). The rotating ring (10) rotates when it is axially displaced along the central shaft (11). The rotating ring (10) and the collar (2) rotate synchronously and move axially synchronously. The collar (2) is also fixedly connected to a cable (6). The fixed end of the cable (6) passes through the fixed cylinder (1), and the free end of the cable (6) extends to the outside of the charging pile. The collar (2) is also provided with a cable management structure for arranging the cable (6) so that the cable (6) is spirally wound on the outer wall of the fixed cylinder (1).

2. The charging cable winding device for a charging pile according to claim 1, characterized in that: The central shaft (11) is provided with a bidirectional threaded groove (111). Two pins (1001) are centrally symmetrically arranged on the inner wall of the rotating ring (10). The two pins (1001) are respectively slidably embedded in one of the bidirectional threaded grooves (111). A bracket (3) for welding to each other is provided between the rotating ring (10) and the collar (2). The bracket (3) has a U-shaped structure in front view and its height is greater than that of the fixed cylinder (1).

3. The charging cable winding device for a charging pile according to claim 2, characterized in that: The center of the rotating ring (10) is recessed downwards, and a movable ring (14) is coaxially slidably embedded in the recessed position. A threaded ring (141) is symmetrically arranged on the outer center of the movable ring (14). The inner thread of the threaded ring (141) is threadedly connected to a threaded rod (13) parallel to the axis of the fixed cylinder (1). A top ring (4) is fixedly connected to the end of the fixed cylinder (1). A drive assembly (5) is fixed on the top ring (4). The drive assembly (5) and the threaded rod (13) passing through the top ring (4) are connected by transmission.

4. A charging cable winding device for a charging pile according to claim 3, characterized in that: The cable management structure includes a guide rod (9) fixed to the inner wall of the collar (2) and arranged along the radial direction of the fixed cylinder (1). The cable management structure also includes two guide wheels (8) arranged on the outer side of the top of the collar (2). The cable (6) passes between the two guide wheels (8) and the cable (6) is pressed by the guide rod (9) towards the end of the fixed cylinder (1).

5. A charging cable winding device for a charging pile according to claim 4, characterized in that: The cable management structure also includes a top cover (12) that is snapped onto the top of the fixed cylinder (1). A guide tube (7) is rotatably mounted on the top cover (12). The cable (6) passes through the guide tube (7), through the gap between the two guide wheels (8), and is located below the guide rod (9).

6. A charging cable winding device for a charging pile according to claim 5, characterized in that: The guide wheel (8) and the guide rod (9) have a certain angle between them, and their setting direction is the same as the winding direction of the cable (6) on the fixed cylinder (1).

7. A charging cable winding device for a charging pile according to claim 6, characterized in that: The guide tube (7) has a two-section structure. The top end and the fixed cylinder (1) are coaxially arranged, and the bottom end faces the gap between the two guide wheels (8). The two sections are connected by tangent arc segments.

8. A charging cable winding device for a charging pile according to claim 7, characterized in that: The central shaft (11) is fixed at the bottom center of the top cover (12), and the threaded rod (13) is rotatably connected to the bottom of the top cover (12). There are at least two threaded rods (13).

Images