Gravity compensation storage device for charging pile gun line and charging pile

Abstract

The utility model provides a gravity compensation storage device and charging pile for charging pile gun wire, include: automatic reset subassembly, swing arm subassembly and transmission mechanism, automatic reset subassembly includes first mounting seat, first pivot and reset energy storage spare, swing arm subassembly includes second mounting seat, second pivot and swing arm, swing arm's first end is fixedly connected with second pivot, and swing arm's second end is used for directly or through gun wire connecting piece and gun wire connection, first pivot and second pivot are non coaxial arrangement, transmission mechanism is connected respectively in first pivot and second pivot, and can make first pivot and second pivot power transmission direction reversible, the utility model discloses can reduce device overall height greatly, make structure more compact, appearance more regular, and the higher degree of adhesion of charging pile top structure is conformed to, swing arm installation position is closer to charging pile ontology, reduced the torque load that shell bears, and the low friction support of collocation bearing has effectively avoided the sway when swing arm swing.

Description

Technical Field

[0001] This utility model relates to the technical field of charging pile devices for new energy vehicles, and in particular to a gravity compensation and storage device for charging pile gun wires and a charging pile. Background Technology

[0002] In new energy vehicle charging scenarios, charging station cables need to meet the requirements of high current transmission, and are usually designed with thick-diameter cables, with a single cable weighing up to 20kg or even more. Users need to overcome both the weight of the cable and the dragging friction when using it, which is not only laborious to operate (requiring a large pulling force to move the cable), but also prone to wear and tangling due to the cable dragging on the ground, affecting the safety and convenience of use; when not in use, the cable is also placed randomly, which takes up space and spoils the tidiness of the charging area.

[0003] To address the aforementioned issues, existing technologies have developed cable retraction devices. The core structure involves placing a swing arm above a coil spring, with a vertically arranged main shaft transmitting power between the spring and the swing arm. The elastic potential energy of the spring is used to retract and reset the cable. However, this design has significant drawbacks: First, the vertical main shaft must pass through both the spring and the swing arm, resulting in a relatively high overall height of the device, poor coordination with the main structure of the charging pile, and insufficient aesthetic regularity. Second, due to the high installation position of the swing arm, the cable suspension point is far from the charging pile body, requiring the outer casing to withstand a large torque load during operation, which can easily lead to deformation of the casing or loosening of connections over long-term use. Third, the vertical transmission structure has poor stress stability, and the swing arm is prone to wobbling and jamming during swing, affecting the smoothness of cable traction and retraction, and reducing the user experience.

[0004] Therefore, there is an urgent need to develop a charging pile cable storage device that is compact in structure, neat in appearance, stable in operation, and can effectively reduce the intensity of operation, so as to make up for the shortcomings of existing technologies. Utility Model Content

[0005] In view of this, the present invention provides a gravity compensation storage device for charging pile gun wires and a charging pile, so as to eliminate or improve one or more defects existing in the prior art.

[0006] One aspect of this utility model provides a gravity compensation and storage device for charging pile charging cables. The gravity compensation and storage device includes: an automatic reset assembly, a swing arm assembly, and a transmission mechanism. The automatic reset assembly includes a first mounting base, a first rotating shaft disposed on the first mounting base, and a reset energy storage component. The reset energy storage component is used to tighten and store energy during the cable lead-out process and to release energy during cable retrieval. The swing arm assembly includes a second mounting base, a second rotating shaft disposed on the second mounting base, and a swing arm. A first end of the swing arm is fixedly connected to the second rotating shaft, and a second end of the swing arm is used to connect directly or via a cable connector to the charging cable. The first rotating shaft and the second rotating shaft are not coaxial. The transmission mechanism is connected to both the first and second rotating shafts, enabling the first and second rotating shafts to rotate synchronously and allowing the power transmission directions of the first and second rotating shafts to be reversible.

[0007] In some embodiments, the first mounting base and the second mounting base are integrally formed as one base, or two separate bases.

[0008] In some embodiments, both the first mounting base and the second mounting base are used to be fixedly installed on the upper end plate of the charging pile, and the first rotating shaft and the second rotating shaft are arranged parallel to each other.

[0009] In some embodiments, the transmission mechanism includes: a first gear mounted in the first mounting base and disposed on the first rotating shaft, and a second gear mounted in the second mounting base and disposed on the second rotating shaft; or, the transmission mechanism includes: a first sprocket mounted in the first mounting base and disposed on the first rotating shaft, a second sprocket mounted in the second mounting base and disposed on the second rotating shaft, and a chain connecting the first sprocket and the second sprocket; or, the transmission mechanism includes: a first pulley mounted in the first mounting base and disposed on the first rotating shaft, a second pulley mounted in the second mounting base and disposed on the second rotating shaft, and a transmission belt connecting the first pulley and the second pulley.

[0010] In some embodiments, the first mounting base is used to be fixedly installed on the top of a side plate of the charging pile, and the second mounting base is used to be fixedly installed on the upper end plate of the charging pile; the first rotating shaft and the second rotating shaft are arranged parallel to each other, and the transmission mechanism includes one of a single-stage spur gear transmission mechanism, a chain transmission mechanism, or a belt transmission mechanism; or, the first rotating shaft and the second rotating shaft are perpendicular to each other, and the transmission mechanism includes a bevel gear mechanism.

[0011] In some embodiments, the swing arm assembly includes an integral swing arm, the integral swing arm being linear, L-shaped, or arc-shaped; or, the swing arm assembly includes a main arm and a secondary arm separately disposed, the main arm and the secondary arm being connected by a rotatable joint, such that the secondary arm can rotate horizontally about the joint as an axis.

[0012] In some embodiments, the gravity compensation storage device further includes a protective cover having a receiving groove for accommodating at least a portion of the swing arm assembly.

[0013] Another aspect of this utility model provides a charging pile, including the aforementioned gravity compensation and storage device for the charging pile charging cable.

[0014] In some embodiments, the gravity compensation storage device is covered by the protective cover, and in its original state, part of the swing arm assembly is stored in the receiving slot, which is located within the projection range of the upper end plate of the charging pile.

[0015] In some embodiments, a gravity compensation storage device is provided on the left and right sides of the top of the charging pile, and both are covered by the same protective cover.

[0016] The gravity compensation and storage device for charging pile gun wires and the charging pile in this embodiment of the utility model can significantly reduce the overall height of the device, making the structure more compact, the appearance more regular, and the fit with the top structure of the charging pile better. At the same time, the swing arm is installed closer to the charging pile body, reducing the torque load on the shell. Combined with the low friction support of the bearing, it effectively avoids shaking and jamming when the swing arm swings. The transmission accuracy and running stability are significantly better than traditional devices.

[0017] 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.

[0018] 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

[0019] 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.

[0020] Figure 1 This is a three-dimensional structural diagram of the gravity compensation storage device in one embodiment of the present invention.

[0021] Figure 2 This is a top view of a gravity compensation storage device according to an embodiment of the utility model.

[0022] Figure 3 for Figure 2 A cross-sectional view along plane DD.

[0023] Figure 4 This is a three-dimensional structural diagram of a charging pile according to one embodiment of the present invention.

[0024] Figure label: 100. Gravity-compensated storage device; 110. Automatic reset assembly; 111. First mounting base; 112. First rotating shaft; 113. Reset energy storage component; 114. First housing; 115. First bearing; 120. Swing arm assembly; 121. Second mounting base; 122. Second pivot; 123. Swing arm; 123-1. Main arm; 123-2. Secondary arm; 123-3. Joint; 124. Pad; 125. Second bearing; 130. Transmission mechanism; 131. First gear; 132. First gear; 140. Gun wire connector; 200. Protective cover; 210. Receiving tank; 300. Charging station; 400. Charging gun cable. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] One key objective of this utility model is to provide a gravity compensation and storage device for charging pile cables. By optimizing the transmission structure and gravity compensation design, the device achieves a reduced height, compact structure, and neat appearance, while improving the stability of the swing arm, reducing the user's operational intensity, and balancing storage convenience with structural reliability.

[0031] like Figures 1-3 As shown, the gravity compensation storage device 100 includes: an automatic reset component 110, a swing arm component 120, and a transmission mechanism 130, etc.

[0032] The automatic reset assembly 110 includes a first mounting base 111, a first rotating shaft 112 mounted on the first mounting base 111, and a reset energy storage component 113. The reset energy storage component 113 is used to tighten and store energy during the lead-out process of the cable and to release energy during the retrieval process of the cable. The reset energy storage component 113 can be a coil spring or similar structure; specifically, one end of the coil spring is fixedly connected to the first rotating shaft 112, and the other end is fixedly connected to the inner side of the first housing 114. During retrieval, the release of energy from the coil spring can drive the swing arm 123 to automatically reset, enabling manual intervention for cable retrieval.

[0033] The swing arm assembly 120 includes a second mounting base 121 and a second rotating shaft 122 disposed on the second mounting base 121, and a swing arm 123; the first end of the swing arm 123 is fixedly connected to the second rotating shaft 122, and the second end of the swing arm 123 is used directly or through a gun wire connector 140 (such as... Figure 4(As shown) is connected to the charging cable. The charging cable connector 140 at the end of the swing arm 123 can further reduce the twisting and wear during the charging cable traction process, and the storage position is accurately positioned on both sides of the charging pile 300, slightly behind, to avoid the charging cable dragging on the ground and getting tangled, thus taking into account both ease of use and safety.

[0034] The first rotating shaft 112 and the second rotating shaft 122 are not coaxially arranged. The transmission mechanism 130 is connected to the first rotating shaft 112 and the second rotating shaft 122 respectively, so that the first rotating shaft 112 and the second rotating shaft 122 rotate synchronously and the power transmission direction of the first rotating shaft 112 and the second rotating shaft 122 is reversible. This utility model replaces the vertical coaxial main shaft transmission structure in the prior art by arranging the first rotating shaft 112 and the second rotating shaft 122 non-coaxially (preferably parallel and spaced apart) and achieving synchronous transmission with the help of the transmission mechanism 130. This significantly reduces the overall height of the device, allowing the device to fit closely with the top structure of the charging pile 300, resulting in a more regular appearance and stronger coordination.

[0035] This design significantly reduces the overall height of the device, making the structure more compact and the appearance more regular, and it fits better with the top structure of the charging pile 300. At the same time, the installation position of the swing arm 123 is closer to the body of the charging pile 300, reducing the torque load on the shell. Combined with the low friction support of the bearing, it effectively avoids the shaking and jamming when the swing arm 123 swings, and the transmission accuracy and running stability are significantly better than traditional devices.

[0036] This invention suspends the charging gun cable 400 (gun wire) and incorporates a reset energy storage component 113 connected to a rotating shaft, such as an adjustable preload spring, to provide a compensating torque that counteracts the weight of the gun wire. This design directly offsets most of the weight load of a 10-30kg gun wire. Combined with the low-friction engagement of the rotating shaft and bearings, the user only needs to exert 1-3kg of force when horizontally pulling the gun wire. This completely solves the problem of laborious operation caused by the lack of a gravity compensation mechanism in traditional devices, making it particularly suitable for applications with heavy, thick-diameter gun wires.

[0037] Optionally, the first rotating shaft 112 can be supported by one or a pair of first bearings 115, and the second rotating shaft 122 can be supported by one or a pair of second bearings 125. Both the first bearing 115 and the second bearing 125 are low-friction bearings (such as deep groove ball bearings, needle roller bearings, or angular contact ball bearings), with their outer rings fixedly installed in the bearing holes of the corresponding mounting seats, and their inner rings interference-fitted with the corresponding rotating shafts to achieve rotatable positioning of the rotating shafts.

[0038] In some embodiments, the first mounting base 111 and the second mounting base 121 are an integrally formed base, or two separate bases.

[0039] Optionally, when the first mounting base 111 and the second mounting base 121 are integrally configured, such as Figure 1 and Figure 3 As shown, the base is integrally formed (e.g., through casting or CNC machining), and its interior integrates the mounting chambers and positioning structures for the first rotating shaft 112 and the second rotating shaft 122. This design is suitable for scenarios where the top mounting space of the charging pile 300 is compact and the overall integrity of the device is critical. The integrated base reduces the number of parts, simplifies the assembly process, and eliminates the need to adjust the relative positions of the two mounting seats separately. It enables quick parallel and spaced positioning of the first rotating shaft 112 and the second rotating shaft 122, improving assembly efficiency. At the same time, the integrated structure has stronger rigidity, which can effectively resist torque loads during transmission and avoid transmission deviations caused by relative displacement of the mounting seats, further ensuring the smoothness of the swing arm 123's swing.

[0040] Optionally, a pad 124 may be provided on the inner side of the second mounting base 121 on the swing arm 123 to reduce the impact of the swing arm 123 on the second mounting base 121.

[0041] Optionally, when the first mounting base 111 and the second mounting base 121 are set separately, the two bases are independent structures and can be fixed to the preset mounting surface on the top of the charging pile 300 by bolts, clips, or other connecting parts. This form is suitable for scenarios with irregular installation spaces and where the spacing of the transmission mechanism 130 needs to be flexibly adjusted. The separate design allows for fine-tuning of the installation position and spacing of the two mounting bases according to the top structural dimensions of the charging pile 300, the cable routing path, and other requirements, adapting to the modification and adaptation needs of charging piles 300 of different specifications. In addition, the processing difficulty of the separate bases is lower, and if a component is damaged, it can be replaced individually without scrapping the whole unit, reducing the later maintenance cost, while also facilitating modular assembly and quality control during the production process.

[0042] In some embodiments, such as Figure 4 As shown, both the first mounting base 111 and the second mounting base 121 are used to be fixedly installed on the upper end plate of the charging pile 300, and the first rotating shaft 112 and the second rotating shaft 122 are arranged in parallel. The design of installing on the upper end plate of the charging pile 300 can make full use of the idle space at the top of the charging pile 300, avoid occupying the operating space of the charging area, and the upper end plate has high structural strength, which can stably bear the overall weight of the device and the dynamic load during the gun line traction process, ensuring the reliability of the installation connection; at the same time, the planar installation reference of the upper end plate facilitates the quick positioning of the first mounting base 111 and the second mounting base 121, ensuring the relative position accuracy of the two, and laying the foundation for the synchronous transmission of the rotating shaft.

[0043] In the above embodiments, the parallel arrangement can make the meshing surfaces of meshing transmission components (such as gears) uniformly stressed, reducing wear and energy loss during transmission, and improving transmission efficiency and service life. In addition, the parallel rotating shaft can ensure that the swing trajectory of the swing arm 123 is matched with the traction direction of the gun line, avoiding problems such as the swing arm 123 jamming and the gun line twisting caused by the misalignment of the rotating shaft, further improving the smoothness of the device operation, while simplifying the structural design and assembly process of the transmission mechanism 130 and reducing manufacturing costs.

[0044] In some embodiments, the transmission mechanism 130 may employ various transmission methods to achieve synchronous reversible transmission between the first rotating shaft 112 and the second rotating shaft 122.

[0045] Optionally, such as Figure 3 As shown, the transmission mechanism 130 includes: a first gear 132 installed in the first mounting base 111 and disposed on the first rotating shaft 112, and a second gear installed in the second mounting base 121 and disposed on the second rotating shaft 122. The first gear 132 and the second gear are meshed together, and their transmission ratio can be set according to actual needs (preferably a 1:1 transmission ratio to ensure that the rotational speeds of the first rotating shaft 112 and the second rotating shaft 122 are equal). The advantages of gear transmission are high transmission accuracy, strong torque transmission capability, effective resistance to instantaneous load impact during gun line traction, compact structure, and low operating noise; combined with the precise positioning of the first mounting base 111 and the second mounting base 121, it can ensure uniform gear meshing clearance, avoid transmission jamming, and is suitable for scenarios with high requirements for transmission stability and load-bearing capacity.

[0046] As another possible implementation, the transmission mechanism 130 includes: a first sprocket mounted in the first mounting base 111 and disposed on the first rotating shaft 112; a second sprocket mounted in the second mounting base 121 and disposed on the second rotating shaft 122; and a chain connecting the first sprocket and the second sprocket. Sprocket and chain drives feature a constant transmission ratio and adaptability to harsh environments (such as dust and slight rain erosion). The flexible transmission of the chain can compensate for minor positioning deviations of the mounting base to a certain extent, reducing assembly precision requirements. Simultaneously, the sprocket and chain have strong torque transmission capabilities and are less prone to slippage, making them suitable for scenarios with long gun line traction distances and frequent start-stop operations. Furthermore, subsequent maintenance only requires periodic chain lubrication, resulting in low maintenance costs.

[0047] For example, the transmission mechanism 130 includes: a first pulley installed in the first mounting base 111 and disposed on the first rotating shaft 112; a second pulley installed in the second mounting base 121 and disposed on the second rotating shaft 122; and a transmission belt connecting the first pulley and the second pulley. The transmission belt can be a synchronous belt, a V-belt, etc. The advantages of pulley drive are smooth operation and extremely low noise, which can effectively reduce the vibration transmitted to the charging pile 300 body during the transmission process; synchronous belt drive can achieve precise transmission without slippage, while V-belt drive has a certain buffering and vibration reduction capability, which is suitable for scenarios with high requirements for operating noise and vibration (such as residential charging piles 300); in addition, pulley drive has a simple structure and light weight, which can reduce the overall weight of the device and reduce the load pressure on the upper plate of the charging pile 300.

[0048] In some embodiments, the first mounting base 111 is used to be fixedly installed on the top of a side plate of the charging pile 300, and the second mounting base 121 is used to be fixedly installed on the upper end plate of the charging pile 300. This installation layout can make full use of the three-dimensional space of the top of the side plate and the upper end plate of the charging pile 300, avoiding space occupation conflicts of a single mounting surface, and is especially suitable for scenarios where the top plane space of the charging pile 300 is limited or the structural design is special. The fixed connection between the first mounting base 111 and the top of the side plate (such as by bolt fastening or welding) can distribute the force with the help of the vertical support force of the side plate. The cooperation between the second mounting base 121 and the upper end plate further improves the overall installation stability. The two form a three-dimensional support structure, which effectively resists the lateral and vertical loads during the cable pulling process and reduces the stress concentration at the installation site.

[0049] Furthermore, when the first rotating shaft 112 and the second rotating shaft 122 are arranged parallel to each other, the transmission mechanism 130 adopts one of a single-stage spur gear transmission mechanism, a chain transmission mechanism, or a belt transmission mechanism. When the first rotating shaft 112 and the second rotating shaft 122 are arranged perpendicular to each other, the transmission mechanism 130 adopts a bevel gear mechanism: the bevel gear mechanism can realize vertical power steering transmission, and can adapt to the vertical arrangement requirements of the first rotating shaft 112 (extending vertically or horizontally along the top of the side plate) and the second rotating shaft 122 (extending horizontally or longitudinally along the upper end plate). It has high transmission efficiency and stable torque transmission, and can ensure the reversibility of power transmission during the lead-out and recovery of the gun wire; at the same time, the bevel gear mechanism has a compact structure, which can realize efficient power conversion in three-dimensional space, avoid the bulky transmission structure caused by the vertical arrangement of the rotating shafts, and ensure the overall compactness and neatness of the device.

[0050] The above-mentioned installation layout and transmission mechanism 130 combination design can be flexibly adapted to the specific structural dimensions, spatial layout and usage requirements of the charging pile 300, further expanding the application scenarios of the device, especially suitable for the modification and adaptation of non-standard structure charging piles, and improving the versatility and practicality of the product.

[0051] In some embodiments, the structure of the swing arm assembly 120 can be flexibly designed according to the spatial layout of the charging pile 300 and the requirements of the gun line traction path.

[0052] Optionally, the swing arm assembly 120 includes an integrated swing arm 123. The integrated swing arm 123 can be straight, L-shaped, or arc-shaped, and its material can be lightweight and high-strength materials such as high-strength aluminum alloy or stainless steel to ensure that the swing arm 123 is not easily deformed when bearing the weight of the charging cable. When a straight swing arm 123 is used, the structure is the simplest and the processing cost is low. The force transmission path of the swing arm 123 is direct, which is suitable for scenarios where the top space of the charging pile 300 is open and the direction of the charging cable traction is unobstructed. It can realize the lead-out and storage of the charging cable along a straight direction, and the swing process is smooth and interference-free. When an L-shaped swing arm is used, its bending structure can be adapted to the installation position of the top edge or corner of the charging pile 300. By bending the section, it avoids interference between the charging pile 300 body or other components, preventing the swing arm 123 from interfering with the structure of the charging pile 300 when swinging. At the same time, it can shorten the projected length of the swing arm 123 in a certain direction and improve the space utilization rate. When the arc-shaped swing arm 123 is used, its arc profile fits the swing trajectory of the gun line better, which can reduce the bending angle of the gun line during the traction process and reduce fatigue damage caused by repeated bending of the gun line. At the same time, the arc structure can disperse the stress concentration of the swing arm 123, improve the structural strength and service life of the swing arm 123, and is suitable for scenarios where the gun line is heavy and needs to be used frequently for a long time.

[0053] As at least one possible way, such as Figure 1 and Figure 2 As shown, the swing arm assembly 120 includes a main arm 123-1 and a secondary arm 123-2 that are separately configured. The main arm 123-1 and the secondary arm 123-2 are connected by a rotatable joint 123-3 (such as a hinge, a rotary bearing, etc.), so that the secondary arm 123-2 can rotate horizontally about the joint 123-3 as an axis, thus preventing the gun line from swaying vertically.

[0054] Furthermore, when the user pulls the charging cable, the auxiliary arm 123-2 can adaptively rotate according to the traction direction, ensuring that the charging cable remains in a horizontal traction state. This avoids cable twisting and jamming caused by the traction direction not matching the swing direction of the swing arm 123. Simultaneously, the split structure allows for adjustment of the length ratio between the main arm 123-1 and the auxiliary arm 123-2 to accommodate different radii of the charging cable's operating area. This is particularly suitable for scenarios where there are obstacles around the charging pile 300 and where the cable lead-out angle needs to be flexibly adjusted. Additionally, a damping structure (such as friction plates or damping bearings) can be installed at the joint 123-3 to ensure smooth rotation of the auxiliary arm 123-2, preventing rapid swinging of the auxiliary arm 123-2 due to inertia during cable retraction and improving safety.

[0055] refer to Figure 4 The main arm 123-1 and the auxiliary arm 123-2, which are separately configured, are connected by a rotatable joint 123-3. When the user retrieves the charging cable, the auxiliary arm 123-2 can adaptively rotate horizontally according to the traction direction. Combined with the swing of the main arm 123-1 around the second pivot 122, the charging cable can be easily guided to the preset storage position on the rear side of the charging pile 300. This device can control the height of the charging cable off the ground between 15-30cm, which avoids friction with the ground during dragging and does not affect user operation. In actual use, if the charging cable is dragged directly on the ground, the outer sheath is easily worn and cracked due to sand, gravel, and water stains, and may even cause leakage risks. The flexible cooperation of the main and auxiliary arms 123-2 can keep the charging cable suspended at all times, effectively avoiding the above problems, while making the charging cable neat and uniform, and making the charging area more tidy and orderly.

[0056] In some embodiments, the gravity compensation storage device 100 further includes a protective cover 200, such as Figure 4 As shown, the protective cover 200 has a receiving groove 210 for accommodating at least a portion of the swing arm assembly 120. Optionally, the protective cover 200 can be made of high-strength plastic (such as ABS or PC) or lightweight alloy, and is fixedly connected to the upper end plate, side plate, or mounting base of the charging pile 300 by bolts. Its structural design is adapted to the swing trajectory of the swing arm assembly 120, ensuring that the swing arm 123 does not interfere with the inner wall of the protective cover 200 during the lead-out or retraction process. In addition, the protective cover 200 can be designed as a detachable structure to facilitate the maintenance and repair of the swing arm assembly 120 and the transmission mechanism 130 in the later stages; the size of its receiving groove 210 can be flexibly adjusted according to the length and shape of the swing arm 123 to adapt to the installation requirements of integrated or split swing arm 123, further improving the versatility of the device.

[0057] The receiving slot 210 can enclose key parts of the swing arm assembly 120 (such as the base, the swing arm 123 body, and the joint 123-3 connection), effectively preventing dust, rainwater, and foreign objects from entering, avoiding rust and jamming of the rotating parts of the swing arm 123, and preventing users from accidentally touching moving parts during operation, thus reducing safety hazards. The protective cover 200 can shield the mechanical structure of the swing arm assembly 120, making the overall appearance of the device simpler and more unified, coordinating with the main style of the charging pile 300, and enhancing the visual quality of the product. The inner wall of the protective cover 200 can be equipped with sound insulation cotton or a buffer pad to reduce mechanical noise when the swing arm 123 swings. At the same time, when the charging cable is retracted and reset, the buffer structure can reduce the collision between the swing arm 123 and the protective cover 200, avoiding damage to components caused by hard impacts and extending the service life of the device.

[0058] Another aspect of this utility model provides a charging pile 300, such as Figure 4 As shown, the device includes a charging pile body, a charging cable, a charging gun, and the aforementioned gravity compensation and storage device 100 for the charging cable of the charging pile 300. The charging pile 300 body has an upper end plate, a side plate, and a pre-set storage area on the rear side. The gravity compensation and storage device 100 is fixedly installed on the top of the upper end plate, the side plate, or a combination of both of the charging pile 300 body via a first mounting base 111 and a second mounting base 121, achieving stable integration with the charging pile 300 body.

[0059] The charging gun is connected to one end of the charging cable, and the other end of the charging cable is connected to the internal circuit of the charging pile 300. The middle part of the charging cable is movably connected to the free end of the swing arm assembly 120 in the gravity compensation and storage device 100 through the charging cable connector 140. When the user needs to charge, the charging gun can be pulled horizontally, which will drive the swing arm assembly 120 to swing through the charging cable. The integrated swing arm 123 rotates along a preset trajectory, or the split main arm 123-1 and the auxiliary arm 123-2 rotate in coordination through the joint 123-3, which, together with the transmission mechanism 130, drives the reset energy storage component 113 of the automatic reset assembly 110 to tighten the stored energy. At the same time, after the charging cable is suspended, the user only needs to apply a horizontal pulling force of 1-3 kg to easily drag the charging cable without having to overcome the gravity load of the charging cable.

[0060] After charging is complete, the user releases the charging gun, and the energy storage component 113 releases energy, which automatically or assisted in the resetting process of the charging cable's suspension point. The device drives the swing arm assembly 120 to automatically reset via the transmission mechanism 130, pulling the charging cable to the preset storage position on the rear side of the charging pile 300. During this process, the main and auxiliary arms 123-2 of the swing arm assembly 120, or the integrated swing arm 123, ensure that the charging cable is always kept at a height of 15-30cm above the ground, avoiding wear and tear on the outer sheath and the risk of leakage caused by friction between the cable and the ground; at the same time, the charging cable is stored on the rear side of the charging pile 300, without occupying charging operation space, and the neat and uniform arrangement keeps the charging area clean and orderly.

[0061] The charging pile 300, by integrating the gravity compensation storage device 100, not only solves the pain points of traditional charging piles such as laborious operation of charging gun cables, messy storage, and easy wear, but also coordinates and adapts to the main body of the charging pile through the compact structural design of the device (non-coaxial transmission, three-dimensional installation layout), resulting in a more neat and uniform appearance. The device operates smoothly with low noise and is compatible with charging gun cables of different weights and specifications, greatly improving the convenience, safety and service life of charging. It is suitable for various scenarios such as residential areas, commercial complexes, and public charging stations.

[0062] In some embodiments, the gravity compensation storage device 100 is covered by the protective cover 200. In its original state, part of the swing arm assembly 120 (e.g., the main arm 123-1 and the mounting base) is stored in the receiving slot 210, which is located within the projection range of the upper end plate of the charging pile 300. This design improves the overall neatness and uniformity of the charging pile's appearance while enhancing the protection of internal components. This device avoids the device protruding outwards and occupying extra space, making the overall structure of the charging pile 300 more compact and suitable for narrow installation scenarios (such as indoor charging piles and densely distributed public charging stations).

[0063] In some embodiments, a gravity compensation storage device 100 is respectively provided on the left and right sides of the top of the charging pile 300, and both are covered by the same protective cover 200. The two gravity compensation storage devices 100 can share the same protective cover 200, and the receiving slots 210 of the protective cover 200 form a symmetrical structure corresponding to the positions of the two devices, for storing the swing arm assemblies 120 on both sides respectively.

[0064] This symmetrical design on both sides meets the usage requirements of dual-gun charging piles. The gravity compensation and storage devices 100 on each side correspond to one charging cable, enabling independent traction and storage of the two cables without interference, thus improving the efficiency of the charging pile 300. The symmetrical arrangement on both sides ensures even stress distribution on the top of the charging pile 300, avoiding center of gravity shift caused by unilateral installation and reducing stress concentration on the main body of the charging pile 300. Especially when both charging cables are suspended or extended simultaneously, the symmetrical structure on both sides can offset lateral loads, improving overall installation stability. The charging cables on both sides are connected by corresponding swing arms. The components 120 are stored on the left and right rear sides of the charging pile 300, and are all within the receiving slots 210 within the projection range of the upper end plate. The charging gun wires are suspended and do not tangle with each other, making the layout of the charging area on both sides symmetrical and neat, further improving the space utilization. The same protective cover 200 covers two gravity compensation storage devices 100 at the same time, which not only simplifies the structural design and reduces the number of parts, but also makes the top of the charging pile 300 look more uniform and coordinated, without scattered protrusions. At the same time, it provides synchronous protection for the mechanical structure of the devices on both sides, preventing rainwater and dust from entering and reducing maintenance costs.

[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 gravity compensation and storage device for charging pile gun cables, characterized in that, The gravity compensation storage device includes: an automatic reset assembly (110), a swing arm assembly (120), and a transmission mechanism (130). The automatic reset assembly (110) includes a first mounting base (111), a first rotating shaft (112) and a reset energy storage component (113) disposed on the first mounting base (111). The reset energy storage component (113) is used to tighten the stored energy during the lead-out process of the gun wire and to release the energy during the retrieval process of the gun wire. The swing arm assembly (120) includes a second mounting base (121) and a second rotating shaft (122) disposed on the second mounting base (121), and a swing arm (123); the first end of the swing arm (123) is fixedly connected to the second rotating shaft (122), and the second end of the swing arm (123) is used to connect directly or through the gun wire connector (140) to the gun wire; The first rotating shaft (112) and the second rotating shaft (122) are not coaxially arranged. The transmission mechanism (130) is connected to the first rotating shaft (112) and the second rotating shaft (122) respectively, so that the first rotating shaft (112) and the second rotating shaft (122) can rotate synchronously and the power transmission direction of the first rotating shaft (112) and the second rotating shaft (122) can be reversed.

2. The gravity compensation and storage device for charging pile gun cables according to claim 1, characterized in that, The first mounting base (111) and the second mounting base (121) are either an integrally formed base or two separate bases.

3. The gravity compensation and storage device for charging pile gun cables according to claim 1, characterized in that, The first mounting base (111) and the second mounting base (121) are both used to be fixedly installed on the upper end plate of the charging pile, and the first rotating shaft (112) and the second rotating shaft (122) are arranged in parallel.

4. The gravity compensation and storage device for charging pile gun cables according to claim 3, characterized in that, The transmission mechanism (130) includes: a first gear mounted in the first mounting base (111) and disposed on the first rotating shaft (112), and a second gear mounted in the second mounting base (121) and disposed on the second rotating shaft (122); or, The transmission mechanism (130) includes: a first sprocket mounted in the first mounting base (111) and disposed on the first rotating shaft (112); a second sprocket mounted in the second mounting base (121) and disposed on the second rotating shaft (122); and a chain connecting the first sprocket and the second sprocket; or, The transmission mechanism (130) includes: a first pulley installed in the first mounting base (111) and disposed on the first rotating shaft (112), a second pulley installed in the second mounting base (121) and disposed on the second rotating shaft (122), and a transmission belt connecting the first pulley and the second pulley.

5. The gravity compensation and storage device for charging pile gun cables according to claim 1, characterized in that, The first mounting base (111) is used to be fixedly installed on the top of one side plate of the charging pile, and the second mounting base (121) is used to be fixedly installed on the upper end plate of the charging pile; The first rotating shaft (112) is arranged parallel to the second rotating shaft (122), and the transmission mechanism (130) includes one of a single-stage spur gear transmission mechanism, a chain transmission mechanism, or a belt transmission mechanism; or, the first rotating shaft (112) and the second rotating shaft (122) are perpendicular to each other, and the transmission mechanism (130) includes a bevel gear mechanism.

6. The gravity compensation and storage device for charging pile gun cables according to claim 1, characterized in that, The swing arm assembly (120) includes an integral swing arm (123), the integral swing arm (123) being linear, L-shaped, or arc-shaped; or, The swing arm assembly (120) includes a main arm (123-1) and a secondary arm (123-2) that are separately configured. The main arm (123-1) and the secondary arm (123-2) are connected by a rotatable joint (123-3), so that the secondary arm (123-2) can rotate horizontally about the joint (123-3) as an axis.

7. The gravity compensation and storage device for charging pile gun cables according to claim 6, characterized in that, The gravity compensation storage device also includes a protective cover (200) having a receiving groove (210) for placing at least a portion of the swing arm assembly (120).

8. A charging pile, characterized in that, Includes a gravity compensation and storage device for charging pile gun cables as described in any one of claims 1-7.

9. The charging pile according to claim 8, characterized in that, The gravity compensation storage device is covered by the protective cover (200). In its original state, part of the swing arm assembly (120) is stored in the receiving groove (210), which is located within the projection range of the upper end plate of the charging pile.

10. The charging pile according to claim 9, characterized in that, The top left and right sides of the charging pile are respectively provided with a gravity compensation storage device, and are covered by the same protective cover (200).

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