A gun line storage system for a charging post

Abstract

The utility model provides a gun line storage system for charging stake, include: swing arm subassembly and receive and put subassembly, swing arm subassembly includes fixed base, first support spare, rotatable casing, first volute spring and swing arm, swing arm is connected with rotatable casing's upper fixedly, receive and put subassembly sets up rotatable casing inside, rotatable casing is rotatably arranged in the top of fixed base through first support spare, the lower part of rotatable casing forms first connecting part, the middle part of fixed base is formed with the center shaft that protrudes upwards, the outer end of first volute spring is connected with first connecting part, and the inner end of first volute spring is connected with the center shaft, so that when rotatable casing is rotated and pulled by swing arm, first volute spring is pulled by rotatable casing and carries out swing arm reset action energy storage.The utility model discloses rotatable casing as a whole part, and the originally separate two function cavities are integrated together to improve rigidity.The height of first support spare is reduced to effectively resist overturning moment.

Description

Technical Field

[0001] This utility model relates to the technical field of charging pile cable retraction devices, and in particular to a charging pile cable retraction system. Background Technology

[0002] Charging station cables are often haphazardly piled up, and the charging heads are easily damaged or crushed when dropped, shortening their lifespan. To address these issues, a cable storage device connects the cable to its swing arm, raising the cable a certain distance off the ground to prevent damage. Furthermore, the internal spring balancer of the cable storage device facilitates user movement of the cable.

[0003] Existing charging pile swing arm devices or cable retraction devices typically consist of two parts: an upper part to assist cable resetting and a lower part to provide the spring force for swing arm resetting. Each part has its own housing. To achieve swing arm rotation, a pivot is needed at the bottom of the upper part, which is then inserted into the lower part to achieve rotational connection between the two parts. A bearing is usually also required between the two housings. In existing technologies, the load needs to be transmitted through multiple connection interfaces, such as the coil spring balancer housing, the main shaft, and the base. Each connection point (e.g., screw connections, bearing fits) is a weak point in rigidity, prone to loosening, deformation, or abnormal noise under long-term, frequent use. Improving the overall rigidity and stability of the device has become an urgent problem to solve. Utility Model Content

[0004] In view of this, the present invention provides a charging cable storage system for charging piles to eliminate or improve one or more defects existing in the prior art.

[0005] This utility model provides a charging cable storage system for charging piles, including: a swing arm assembly and a retraction assembly; the swing arm assembly includes a fixed base, a first support member, a rotatable housing, a first coil spring, and a swing arm; the swing arm is fixedly connected to the upper part of the rotatable housing; the retraction assembly is disposed inside the rotatable housing, above the first coil spring, and is used for retracting and extending the charging cable; the rotatable housing is rotatably disposed above the fixed base via the first support member; a first connecting portion is formed at the lower part of the rotatable housing, a central shaft is formed by the upward protrusion of the middle part of the fixed base, the outer end of the first coil spring is connected to the first connecting portion, and the inner end of the first coil spring is connected to the central shaft, so that when the rotatable housing is rotated and pulled by the swing arm, the first coil spring is pulled by the rotatable housing to perform energy storage for the swing arm resetting action.

[0006] In some embodiments of this utility model, the rotatable housing includes at least an upper housing for loading the retractable assembly and a lower housing for loading the first coil spring; the upper housing and the lower housing are integrally formed or fixedly connected; a partition extending in a horizontal direction is formed between the upper housing and the lower housing, and the bottom surface of the partition has a continuous or spaced annular surface for abutting against the first support member; at least one of the first connecting portions is disposed on the inner wall of the lower housing.

[0007] In some embodiments of this utility model, a limiting ring is provided at the top of the fixed base, and the limiting ring is integrally formed or fixedly connected to the fixed base; the limiting ring extends upward on the top surface of the fixed base; the limiting ring is disposed on the outside of the first support member, and the inner wall of the limiting ring and the top surface of the fixed base abut against the first support member; the outside of the lower housing abuts against the first support member.

[0008] In some embodiments of this utility model, the rotatable housing further includes a covering portion that extends along the height direction of the rotatable housing and is used to cover the limiting ring.

[0009] In some embodiments of this utility model, the first connecting portion includes a first mounting groove formed on the inner side of the lower housing for mounting the outer end of the first coil spring; the first mounting groove includes an extension portion and a locking portion that communicate with each other; the lower housing is an annular structure; the extension portion extends radially along the lower housing; the locking portion extends circumferentially along the lower housing; multiple first mounting grooves are provided; at least two first mounting grooves share the same extension portion, and the locking portions of the two first mounting grooves are located on both sides of the extension portion; the central shaft has a vertically arranged second mounting groove for mounting the inner end of the first coil spring.

[0010] In some embodiments of this utility model, the central shaft and the fixed base are either separately configured or integrally configured.

[0011] In some embodiments of this utility model, when the central shaft and the fixed base are separately configured, the central shaft is mounted on the fixed base via an angle adjustment mechanism; the angle adjustment mechanism includes a flange, which is integrally formed or fixedly connected to the bottom of the central shaft, and the flange has multiple sets of first connecting holes, each set of first connecting holes being located at different circumferential positions on the flange; the fixed base has second connecting holes for connecting to different sets of first connecting holes via fasteners, so that the first coil spring obtains different initial elastic forces.

[0012] In some embodiments of this utility model, the upper part of the central shaft has a shoulder structure, and the central axis of the central shaft and the lower housing coincide; the middle part of the lower housing has a third mounting groove; a second support member is installed on the upper part of the central shaft, and the second support member abuts against the shoulder structure and the third mounting groove.

[0013] In some embodiments of this utility model, a first stop is fixedly disposed inside the rotatable housing, and a second stop is fixedly disposed on the fixed base, the second stop being located on the rotation path of the first stop.

[0014] In some embodiments of this utility model, the take-up and release assembly includes a fixed shaft, a drum, a second coil spring, and a pull cable; the fixed shaft is vertically arranged and its bottom is connected to the fixed base, so that the fixed shaft and the central shaft cannot rotate relative to each other; the middle part of the drum is rotatably sleeved on the fixed shaft; the two ends of the second coil spring are respectively connected to the fixed shaft and the drum; one end of the pull cable is fixedly connected to the outer wall of the drum, the middle part of the pull cable passes through the swing arm, and the other end of the pull cable is used to connect to the gun wire; and / or, the first support member includes any one of a bearing, a bushing, and a sleeve.

[0015] The rotating housing in this utility model's charging cable storage system for charging piles is integrated as a single component, combining two previously separate functional cavities. This eliminates the rigidity loss caused by mechanical interfaces, thus improving rigidity. The height of the first support member is reduced, effectively resisting the overturning torque generated when the user pulls the charging cable to drive the swing arm, effectively improving rigidity and stability. The inner end of the first coil spring is fixed on a stable central shaft, ensuring good concentricity during winding and release, resulting in relatively stable torque output. The rotating housing is directly connected to the central shaft of the fixed base via the first coil spring. When the swing arm rotates, it directly twists the first coil spring to store energy, resulting in more direct energy release and more sensitive response during reset, improving reset efficiency and stability.

[0016] Additional advantages, objects, and features of this invention will be set forth in part in the description which follows, and will in part become apparent to those skilled in the art upon review of the description, or may be learned by practice of the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures specifically pointed out in the description and drawings.

[0017] Those skilled in the art will understand that the objectives and advantages achievable with this invention are not limited to those specifically described above, and that the above and other objectives achievable with this invention will become clearer from the following detailed description. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, do not constitute a limitation thereof. The components in the drawings are not drawn to scale but are merely for illustrating the principles of the present invention. For ease of illustration and description of certain parts of the present invention, corresponding portions in the drawings may be enlarged, i.e., may appear larger relative to other components in an exemplary device actually manufactured according to the present invention.

[0019] Figure 1 This is a three-dimensional structural diagram of a charging cable storage system for a charging pile according to one embodiment of the present invention.

[0020] Figure 2 This is a front view of a charging cable storage system for a charging pile according to one embodiment of the present invention.

[0021] Figure 3 This utility model Figure 3 Sectional view at point AA.

[0022] Figure 4 This is a schematic diagram of the internal structure of the rotatable housing in one embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the structure of the fixing base in one embodiment of the present invention.

[0024] Figure 6 This is a top view of a charging cable storage system for a charging pile according to one embodiment of the present invention.

[0025] Figure 7 This is a bottom view of a charging cable storage system for a charging pile according to one embodiment of the present invention.

[0026] Reference numerals: 11. Fixed base; 12. Central shaft; 13. Second mounting groove; 14. Limiting ring; 15. Second connecting hole; 16. Second stop; 17. First connecting hole; 18. Flange; 19. Shoulder structure; 2. Rotatable housing; 21. Lower housing; 22. Partition; 23. Upper housing; 24. Covering part; 25. Third mounting groove; 26. First stop; 3. Swing arm; 4. First mounting groove; 41. Extension part; 42. Clamping part; 5. First support member; 6. Rewinding assembly; 61. Fixed shaft; 62. Drum; 62. Drum; 7. Second support member. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and descriptions of this utility model are used to explain the present utility model, but are not intended to limit the present utility model.

[0028] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0029] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, element, step, or component, but does not exclude the presence or addition of one or more other features, elements, steps, or components.

[0030] It should also be noted that, unless otherwise specified, the term "connection" in this article can refer not only to a direct connection, but also to an indirect connection involving an intermediary.

[0031] In the following description, embodiments of the present invention will be illustrated with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar parts, or the same or similar steps.

[0032] To address the technical problem of poor rigidity and stability in existing charging cable storage devices, this utility model provides a charging cable storage system for charging piles. The rotatable housing 2 is integrated as a single part, combining two originally separate functional cavities without the rigidity loss caused by mechanical interfaces. The height of the first support member 5 is reduced, effectively resisting the overturning moment generated when the user pulls the charging cable and drives the swing arm, thus effectively improving rigidity and stability.

[0033] This utility model embodiment provides a charging cable storage system for charging piles, referring to... Figures 1 to 3 The system includes an integrated swing arm assembly and a retraction assembly 6.

[0034] The swing arm assembly includes a fixed base 11, a first support member 5, a rotatable housing 2, a first coil spring, and a swing arm 3. Specifically, the swing arm 3 is fixedly connected to the upper part of the rotatable housing 2. (Refer to...) Figure 1 Only a portion of the structure of the swing arm 3 is shown. The length of the swing arm 3 is much greater than the diameter of the rotatable housing 2. The swing arm 3 can be designed as a multi-segment bendable structure, which has more degrees of freedom and a flexible operation effect.

[0035] The retraction assembly 6 is located inside the rotatable housing 2, above the first coil spring, and is used for retracting and extending the charging cable. The pull cable of the retraction assembly 6 can be fixedly connected to the middle of the charging cable. When the charging cable needs to be pulled over a long distance, the pull cable will be pulled out as the charging cable moves, without excessively hindering the movement of the charging cable. During the process of returning the charging gun to its original position, the pull cable will automatically retract into the retraction assembly 6 and will provide a certain tension to the charging cable to assist in returning the charging gun to its original position.

[0036] The rotatable housing 2 is rotatably mounted above the fixed base 11 via the first support member 5. The rotatable housing 2 can be configured as a cylindrical structure or other columnar structure. The first support member 5 serves to support the entire rotatable housing 2 and its internal components, and acts as a rotating pair, allowing the rotatable housing 2 to rotate relative to the fixed base 11 around its own axis. The fixed base 11 can be fixedly connected to the charging pile and can be located in the upper part or at the top of the charging pile, so that the overall cable storage system has a relatively high height. The rotatable housing 2, the first support member 5, and the fixed base 11 together form the main structure of the overall cable storage system. This eliminates the need for multiple outer shells, multiple bearings, and a central rotating shaft, resulting in a simple assembly, compact structure, and high reliability of the main structure in this embodiment.

[0037] The lower part of the rotatable housing 2 has a first connecting part, and the middle part of the fixed base 11 protrudes upward to form a central shaft 12. The outer end of the first coil spring is connected to the first connecting part, and the inner end of the first coil spring is connected to the central shaft 12. This allows the first coil spring to be pulled by the rotatable housing 2 to perform the energy storage for the swing arm 3 to reset when the rotatable housing 2 is rotated by the swing arm 3. During use, the operator pulls the gun line, which drives the swing arm 3 to rotate and store elastic potential energy. As the gun line is further stretched, it drives the extension cable of the retraction assembly 6 to extend, allowing the gun line to cover a wider area. When the user resets the gun line, the swing arm and extension cable reset along with the gun line.

[0038] In the above embodiment, the rotatable housing 2 is a single integral part, integrating the two originally separate functional cavities (the upper retraction and extension component compartment and the lower coil spring compartment). It is itself a robust integral frame, with a continuous and direct force transmission path and no stiffness loss due to mechanical interfaces. This allows the entire rotating structure to more stably withstand the torque generated by the swing arm, greatly reducing the possibility of swaying and deformation.

[0039] The first support member 5 can be set at approximately the same height as the first coil spring. Compared with the prior art, the height of the first support member 5 has been reduced and is closer to the charging pile, that is, the part where the rotatable housing 2 and the fixed base 11 are rotatably connected is closer to the charging pile; and the first support member 5 is closer to the outer edge of the overall device, which makes the rotatable housing, its internal structure and the swing arm more stable when rotating.

[0040] When the user pulls the gun wire to move the swing arm, a huge overturning moment is generated at the top of the device. In this embodiment, the first support member 5 is located outside the first coil spring and close to the fixed base 11, which can effectively resist this overturning moment. Compared with the prior art where the bearing is located in the middle of the overall device, the structure of this embodiment has better overall rigidity, the swing arm sways less when under force, and is more stable and solid.

[0041] Compared to existing technologies, the charging gun cable storage system of this embodiment features a highly integrated and integrally formed rotatable housing. The upper part of this rotatable housing not only supports the storage assembly 6, but its lower part also has a first connecting portion for connecting the first coil spring. Since the inner end of the first coil spring is fixed to the central shaft 12, the outer end of the first coil spring can rotate with the rotatable housing to store torque. Compared to the method of storing torque by rotating the inner end of the first coil spring, in this embodiment, the distance between the outer end of the first coil spring and the center of rotation of the coil spring is longer. The user can store a larger torque in the first coil spring by applying a smaller force to the charging gun or cable, thus achieving the effect of less effort when the user drags the cable to rotate the swing arm.

[0042] In this embodiment, the inner end of the first coil spring is fixed on a stable central shaft 12. The coiling and unwinding of the first coil spring have good concentricity, resulting in relatively stable torque output. With the inner end of the first coil spring fixed and the outer end movable with the rotatable housing, this configuration allows the rotation angle applied to the outer ring of the first coil spring (or connecting part, such as the rotatable housing) to be directly converted into the torsion angle of the coil spring in a 1:1 ratio. This ensures a perfect linear relationship between the torque output and the input angle.

[0043] In existing technologies, the swing arm reset requires the main shaft to drive the coil spring inside the base, resulting in a long energy transmission path and friction and energy loss. In this embodiment, the swing arm can be directly fixed to the rotatable housing, which is directly connected to the central shaft of the fixed base through the first coil spring. This reduces the requirements on the central shaft 12. When the swing arm rotates, it directly twists the first coil spring to store energy, resulting in more direct energy release and a more sensitive response during reset, thus improving reset efficiency and stability.

[0044] In some embodiments, refer to Figure 3 and Figure 4 The rotatable housing 2 includes at least an upper housing 23 for mounting the take-up and take-down assembly 6 and a lower housing 21 for mounting the first coil spring. The upper housing 23 and the lower housing 21 can be integrally formed, thereby giving the entire rotatable housing 2 a stronger structural rigidity. The upper housing 23 and the lower housing 21 can also be fixedly connected, which reduces manufacturing difficulty and facilitates later maintenance and replacement.

[0045] Reference Figure 3A partition 22 extending horizontally is formed between the upper housing 23 and the lower housing 21. The bottom surface of the partition 22 has continuous or spaced annular surfaces for abutting against the first support member 5. Specifically, the partition 22 can be the bottom shell of the upper housing 23, and part of the structure of the bottom shell can serve as the top shell of the lower housing 21. The upper housing 23, the lower housing 21, and the partition 22 can be integrally formed. Alternatively, the partition 22 can be a separate plate-like structure, fixedly connected between the upper housing 23 and the lower housing 21. The annular surface of the bottom surface of the partition 22 is adapted to the top surface of the first support member 5. The load of the rotatable housing 2 and its internal components is applied to the top surface of the first support member 5 through the partition 22, and the first support member 5 plays a load-bearing role.

[0046] Reference Figure 4 At least one first connecting part is provided on the inner wall of the lower housing 21. The first connecting part is used to install the outer end of the first coil spring. Multiple first connecting parts can be provided to facilitate the flexible assembly of the first coil spring.

[0047] In some embodiments, refer to Figure 5 A limiting ring 14 is provided on the top of the fixed base 11, and the limiting ring 14 extends upward on the top surface of the fixed base 11. The limiting ring 14 and the fixed base 11 can be integrally formed, thereby giving the entire base part stronger structural rigidity. The limiting ring 14 and the fixed base 11 can also be fixedly connected, which can reduce manufacturing difficulty and facilitate later maintenance and replacement.

[0048] A limiting ring 14 is disposed on the outer side of the first support member 5. The inner wall of the limiting ring 14 and the top surface of the fixing seat 11 abut against the first support member 5, and the outer side of the lower housing 21 abuts against the first support member 5. The load of the rotatable housing 2 and its internal components is applied to the fixing seat 11 through the first support member 5. The fixing seat 11 is fixedly connected to the charging pile, thereby applying the load of the entire gun cable storage system and the gun cable to the charging pile.

[0049] In some embodiments, refer to Figure 3 and Figure 6 The rotatable housing 2 also includes a cover portion 24, which extends along the height direction of the rotatable housing 2 and covers the limiting ring 14. The cover portion 24 can be integrally formed with the rotatable housing 2, serving as part of the outermost structure of the rotatable housing 2. The cover portion 24 can reduce the entry of moisture, dust, etc. into the first support member 5, and at the same time forms a U-shaped seal, which can extend the service life of the first support member 5. The rotatable housing 2 and the cover portion 24 cover most of the structure except for the fixed base 11. The overall shape of the rotatable housing 2 and the cover portion 24 can be cylindrical, combining impact resistance and aesthetics.

[0050] In some embodiments, refer to Figure 4The first connecting portion includes a first mounting groove 4 formed inside the lower housing 21 for mounting the outer end of the first coil spring. Specifically, the first mounting groove 4 includes an insertion portion 41 and a locking portion 42 that communicate with each other. The lower housing 21 has an annular structure, with the insertion portion 41 extending radially along the lower housing 21 and the locking portion 42 extending circumferentially along the lower housing 21. The outer end of the first coil spring can be inserted into the first mounting groove 4 along the axial direction of the lower housing 21, or it can sequentially enter the insertion portion 41 and the locking portion 42 along the circumferential direction of the lower housing 21.

[0051] Multiple first mounting slots 4 are provided, with at least two first mounting slots 4 sharing the same extension portion 41, and the locking portions 42 of the two first mounting slots 4 located on both sides of the extension portion 41. This arrangement facilitates the operator's flexible assembly of the first coil spring and allows for the adaptation of first coil springs with different directions of rotation.

[0052] Reference Figure 5 The central shaft 12 has a vertically arranged second mounting groove 13 for mounting the inner end of the first coil spring.

[0053] In some embodiments, the central shaft 12 and the fixed base 11 are separately arranged, which reduces manufacturing difficulty, facilitates later maintenance and replacement, and also makes it easier to obtain the initial preload of the first coil spring by rotating the central shaft 12. The central shaft 12 and the fixed base 11 can also be integrally arranged, thereby giving the entire base part stronger structural rigidity.

[0054] In some embodiments, refer to Figure 5 and Figure 7 When the central shaft 12 and the fixed base 11 are separately configured, the central shaft 12 is mounted on the fixed base 11 via an angle adjustment mechanism. Since the inner end of the first coil spring is fixedly mounted on the central shaft 12, the inner end of the first coil spring can be rotated simply by changing the angle of the central shaft 12, thereby obtaining the initial elastic force.

[0055] Reference Figure 7 The angle adjustment mechanism includes a flange 18, which is integrally formed or fixedly connected to the bottom of the central shaft 12. The flange 18 has multiple sets of first connection holes 17, each set of first connection holes 17 located at different circumferential positions on the flange 18. The outer diameter of the flange 18 is larger than the outer diameter of the central shaft 12. The bottom of the fixing seat 11 has a flange mounting groove. When the flange 18 is installed in the flange mounting groove, the bottom of the flange 18 is flush with the bottom of the fixing seat 11, facilitating adaptation to the installation position on the charging pile.

[0056] Reference Figure 5The mounting base 11 has a second connecting hole 15 for connecting to different groups of first connecting holes 17 via fasteners, so that the first coil spring can obtain different initial elastic forces. It should be noted that the second connecting hole 15 can be a threaded hole, the first connecting hole 17 can be a through hole, and the fastener can be a screw. Specifically, each group of first connecting holes 17 includes two through holes arranged at a 180-degree angle, and a total of three or more groups can be provided. The second connecting hole 15 can be two threaded holes arranged at a 180-degree angle. For example, along the direction of the first coil spring's tightening, the first connecting holes 17 can be divided into three groups according to their distance from the second connecting hole 15 from near to far. The first connecting hole 17 farther from the second connecting hole 15 provides a greater initial elastic force after connection.

[0057] In some embodiments, refer to Figure 5 The upper part of the central shaft 12 has a shoulder structure 19, and the central axis of the central shaft 12 coincides with the central axis of the lower housing 21. (Refer to...) Figure 3 The lower housing 21 has a third mounting groove 25 in its middle. A second support member 7 is mounted on the upper part of the central shaft 12, and the second support member 7 abuts against the shoulder structure 19 and the third mounting groove 25. The second support member 7 can be any one of a bearing, a bushing, or a sleeve. The second support member 7 is installed in the third mounting groove 25, and the central shaft 12 passes through the middle of the second support member 7, with the shoulder structure 19 abutting against the second support member 7. A first support member is provided at the bottom edge of the lower housing 21, and a second support member 7 is provided at the top center. The two support members work together to support the lower housing 21 and prevent the axis of the lower housing 21 and the entire rotatable housing from shifting during rotation. Especially when the swing arm is only set on one side of the rotatable housing, causing uneven stress on the lower housing 21 and bearing a large bending moment, it can still maintain normal operation, greatly improving the load-bearing capacity of the lower housing 21.

[0058] In some embodiments, refer to Figure 4 The rotatable housing 2 has a first stop 26 fixedly installed inside, as shown in the reference. Figure 5 A second stop 16 is fixedly installed on the mounting base 11, and the second stop 16 is located on the rotation path of the first stop 26. During the rotation of the rotatable housing 2 driven by the swing arm 3, the first stop 26 will collide with the second stop 16, thereby limiting the rotation angle of the swing arm 3 and preventing excessive rotation that could affect other charging stations or vehicles. When the first coil spring has initial elasticity, its own elasticity will cause the second stop 16 and the first stop 26 to contact each other, preventing the initial elasticity of the first coil spring from being completely released. In this case, when the user pulls the charging cable to rotate the rotatable housing, the first coil spring will further store elasticity, making the swing arm 3 return to its original position more quickly. It should be noted that the initial elasticity of the first coil spring should not be too large, otherwise it will be difficult for the user to pull the charging cable.

[0059] In some embodiments, the take-up and take-down assembly 6 includes a fixed shaft 61, a drum 62, a second coil spring, and a pull cable.

[0060] The fixed shaft 61 is vertically positioned, and its bottom is connected to the fixed base 11, preventing relative rotation between the fixed shaft 61 and the central shaft 12. Specifically, the bottom of the fixed shaft 61 can be designed as a thin-walled structure with an expansion joint, so that after the bottom of the fixed shaft 61 is inserted into the central shaft 12, the thin-walled structure expands and tightens the shaft hole at the top of the central shaft 12 under its own elastic force, thereby forming a fixed connection between the fixed shaft 61 and the central shaft 12 and keeping them relatively fixed. Alternatively, the fixed shaft 61 and the central shaft 12 can adopt a spline fit, threaded fit, etc.

[0061] The middle part of the drum 62 is rotatably sleeved on the fixed shaft 61. The two ends of the second coil spring are connected to the fixed shaft 61 and the drum 62 respectively. The fixed shaft 61 and the drum 62 are connected to the second coil spring through a coil spring mounting groove.

[0062] One end of the pull cable is fixedly connected to the outer wall of the drum 62, the middle of the pull cable passes through the swing arm 3, and the other end of the pull cable is used to connect to the gun wire. A guide mechanism can be provided in the middle or at the end of the swing arm 3 to guide the pull cable and reduce the friction between the pull cable and the swing arm.

[0063] In the above embodiments, the first support member 5 includes any one of a bearing, a bushing, and a sleeve. The bearing can be an angular contact bearing or a thrust bearing. When using a bushing or sleeve, grease can be applied to the friction surface for lubrication, and the bushing or sleeve is less expensive.

[0064] It should be clarified that this utility model is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this utility model is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this utility model.

[0065] In this invention, features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, and / or combined with or in place of features of other embodiments.

[0066] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. For those skilled in the art, various modifications and variations can be made to the embodiments of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A charging cable storage system for charging piles, characterized in that, include: Swing arm assembly and retraction assembly (6); The swing arm assembly includes a fixed base (11), a first support member (5), a rotatable housing (2), a first coil spring, and a swing arm (3). The swing arm (3) is fixedly connected to the upper part of the rotatable housing (2); The retraction assembly (6) is disposed inside the rotatable housing (2), above the first coil spring, and is used to retract and extend the gun cable; The rotatable housing (2) is rotatably disposed above the fixed base (11) via the first support member (5); The lower part of the rotatable housing (2) has a first connecting part, and the middle part of the fixed base (11) has a central shaft (12) protruding upward. The outer end of the first coil spring is connected to the first connecting part, and the inner end of the first coil spring is connected to the central shaft (12), so that when the rotatable housing (2) is rotated and pulled by the swing arm (3), the first coil spring is pulled by the rotatable housing (2) to perform the energy storage of the swing arm (3) resetting action.

2. The charging cable storage system for charging piles according to claim 1, characterized in that, The rotatable housing (2) includes at least an upper housing (23) for mounting the take-up and take-down assembly (6) and a lower housing (21) for mounting the first coil spring. The upper housing (23) and the lower housing (21) are integrally formed or fixedly connected; A partition (22) extending in the horizontal direction is formed between the upper housing (23) and the lower housing (21). The bottom surface of the partition (22) has a continuous or spaced annular surface for abutting against the first support member (5). At least one of the first connecting portions is disposed on the inner wall of the lower housing (21).

3. The charging cable storage system for charging piles according to claim 2, characterized in that, A limiting ring (14) is provided on the top of the fixed base (11), and the limiting ring (14) is integrally formed or fixedly connected to the fixed base (11); the limiting ring (14) extends upward on the top surface of the fixed base (11); The limiting ring (14) is disposed on the outside of the first support member (5), and the inner wall of the limiting ring (14) and the top surface of the fixing seat (11) abut against the first support member (5). The outer side of the lower housing (21) abuts against the first support member (5).

4. The charging cable storage system for charging piles according to claim 3, characterized in that, The rotatable housing (2) further includes a cover (24) which extends along the height direction of the rotatable housing (2) and is used to cover the limiting ring (14).

5. The charging cable storage system for charging piles according to claim 2, characterized in that, The first connecting portion includes a first mounting groove (4) formed inside the lower housing (21) for mounting the outer end of the first coil spring; The first mounting groove (4) includes an extension (41) and a locking part (42) that are connected to each other. The lower housing (21) is an annular structure. The extension (41) extends in the radial direction of the lower housing (21), and the locking part (42) extends in the circumferential direction of the lower housing (21). The first mounting slot (4) is provided with multiple slots; At least two of the first mounting slots (4) share the same extension portion (41), and the locking portions (42) of the two first mounting slots (4) are located on both sides of the extension portion (41); The central shaft (12) has a vertically arranged second mounting groove (13) for mounting the inner end of the first coil spring.

6. The charging cable storage system for charging piles according to claim 2, characterized in that, The central shaft (12) and the fixed base (11) are either separately or integrally arranged.

7. The charging cable storage system for charging piles according to claim 6, characterized in that, When the central shaft (12) and the fixed base (11) are separately arranged, the central shaft (12) is mounted on the fixed base (11) by means of an angle adjustment mechanism; The angle adjustment mechanism includes a flange (18), which is integrally formed or fixedly connected to the bottom of the central shaft (12). The flange (18) has multiple sets of first connection holes (17), and each set of first connection holes (17) is located at a different circumferential position of the flange (18). The fixing seat (11) has a second connecting hole (15) for connecting to the first connecting holes (17) of different groups by means of fasteners, so that the first coil spring can obtain different initial elastic forces.

8. The charging cable storage system for charging piles according to claim 6, characterized in that, The upper part of the central shaft (12) has a shoulder structure (19), and the central axis of the central shaft (12) and the lower housing (21) coincide. The lower housing (21) has a third mounting groove (25) in the middle. A second support member (7) is installed on the upper part of the central shaft (12), and the second support member (7) abuts against the shoulder structure (19) and the third mounting groove (25).

9. The charging cable storage system for charging piles according to claim 7, characterized in that, The rotatable housing (2) has a first stop (26) fixedly installed inside, and the fixed base (11) has a second stop (16) fixedly installed on it. The second stop (16) is located on the rotation path of the first stop (26).

10. The charging cable storage system for charging piles according to claim 6, characterized in that, The take-up and take-down assembly (6) includes a fixed shaft (61), a drum (62), a second coil spring, and a pull cable; The fixed shaft (61) is vertically arranged and its bottom is connected to the fixed seat (11), so that the fixed shaft (61) and the central shaft (12) cannot rotate relative to each other; The middle part of the drum (62) is rotatably sleeved on the fixed shaft (61); The two ends of the second coil spring are respectively connected to the fixed shaft (61) and the drum (62); One end of the pull wire is fixedly connected to the outer wall of the drum (62), the middle part of the pull wire passes through the swing arm (3), and the other end of the pull wire is used to connect to the gun wire; and / or, The first support member (5) includes any one of a bearing, a bushing, and a sleeve.

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