Charging device

Abstract

This disclosure relates to a charging device, specifically a charging technology. The charging device includes a base assembly, a rotating assembly, a charging assembly, a cover plate, and a limiting groove. The rotating assembly is rotatably connected to the base assembly. The charging assembly includes a cable and a charging gun. A first end of the cable passes through the base assembly and is electrically connected to a power source. A second end of the cable passes through the rotating assembly and is electrically connected to the charging gun. The cover plate is located on the side of the rotating assembly opposite to the charging gun and is connected to the base assembly. The limiting groove is located on the cover plate, and its extension direction is adapted to the movement trajectory of a first through-hole of the rotating assembly. The first through-hole allows the cable to pass through, and the area between the first port of the limiting groove and the first through-hole accommodates the cable. The cable segment located between the first port of the limiting groove and the base assembly experiences reduced torsional sway relative to the base assembly, thereby mitigating damage or metal fatigue caused by mutual compression and friction between the cable and the base assembly, and improving the electrical connection reliability of the charging device.

Description

Technical Field

[0001] The present disclosure relates to the field of charging technology, in particular to a charging device. Background Art

[0002] With the vigorous development of the new energy vehicle industry, charging devices matched with electric vehicles have been widely used. In order to prevent cables from dragging and rubbing on the ground, charging devices have gradually adopted the structural solution of upper outlet.

[0003] In the related art, in order to adapt to differences in the position of charging ports of different vehicle models and the distance between the parking position and the charging device, the charging device is provided with a rotatable rotating assembly. A cable electrically connected to the charging base is led out from the base and penetrates the rotating assembly, and the cable can swing relative to the base on both sides of the rotating assembly.

[0004] When a user holds the charging gun to adjust the angle, the rotating assembly drives the entire length of cable sleeved thereon (that is, the entire length from the leading-out end of the cable at the base to the charging gun end) to twist together. After long-term use, it is easy to cause metal fatigue and fracture of the cable in the leading-out area of the base, thereby resulting in low reliability of electrical connection of the charging device. Summary of the Invention

[0005] Embodiments of the present disclosure provide a charging device, which can solve the above technical problems existing in the related art. The technical solution is as follows: A charging device, comprising a base assembly, a rotating assembly, a charging assembly, a cover plate and a limiting groove; The rotating assembly is rotatably connected to the base assembly; The charging assembly comprises a cable and a charging gun, a first end of the cable passes through the base assembly and is used for being electrically connected to a power supply, and a second end of the cable passes through the rotating assembly and is electrically connected to the charging gun; The cover plate is located on a side of the rotating assembly away from the charging gun and connected to the base assembly, the limiting groove is located on the cover plate, an extending direction of the limiting groove is adapted to a movement track of a first through hole of the rotating assembly, the first through hole is for the cable to pass through, and an area between a first port of the limiting groove and the first through hole accommodates the cable.

[0006] In some possible implementations, the base assembly comprises a base body, the base body has a first opening, and the first opening is for the cable to pass through; The charging assembly further comprises a base bracket, a first sealing ring and a second sealing ring, the base bracket sleeves the cable and is connected to the base body, the first sealing ring is located between the cable and the base bracket, and the second sealing ring is located between the base body and the base bracket.

[0007] In some possible implementations, the outer wall of the base body has two circumferentially distributed first limiting portions, and the rotating assembly has a second limiting portion located between the two first limiting portions.

[0008] In some possible implementations, the base assembly further includes a support base located on the side of the rotating assembly facing the charging gun and connected to the base body.

[0009] In some possible implementations, the charging device further includes a limiting latch connected to the cover plate and the cable located between the base assembly and the first port.

[0010] In some possible implementations, the rotating assembly includes a connected turntable and a conveyor, a first through-hole located on the turntable, the turntable having a second through-hole that accommodates the base assembly and is used to allow rotation of the turntable relative to the base assembly, the conveyor located on the side of the first through-hole opposite to the charging gun, the conveyor having a plurality of rollers, the conveyor being used to roll and convey the cable.

[0011] In some possible implementations, the turntable has a disc structure, and the center of the second through hole coincides with the center of the turntable.

[0012] In some possible implementations, in a first direction, the distance from the first through hole to the second through hole is greater than the distance from the first through hole to the outer edge of the turntable, wherein the first direction is the direction of the line connecting the center of the second through hole and the center of the first through hole.

[0013] In some possible implementations, the charging device further includes an operating element located on the side of the rotating assembly facing the charging gun and connected to the rotating assembly, the operating element having a grip for a user to hold and apply external force.

[0014] In some possible implementations, the actuating element has a groove; The charging assembly also includes a charging base, one end of which has a snap-fit ​​structure for securing the charging gun, and the other end of which has a slide rail that is adapted to the slide groove.

[0015] The beneficial effects of the technical solution provided in this disclosure include at least the following: Since the cover plate is fixedly connected to the base assembly, and the area between the first port of the limiting groove and the first through hole always accommodates the cable, the limiting groove has a limiting effect on the cable, which reduces the degree of torsion and swing of the cable segment located between the first port of the limiting groove and the base assembly relative to the base assembly, thereby reducing the damage or metal fatigue caused by the mutual squeezing and friction between the cable and the base assembly, and thus improving the electrical connection reliability of the charging device.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a charging device provided in an embodiment of this disclosure; Figure 2 This is a partial schematic diagram of a charging device provided in an embodiment of this disclosure; Figure 3 This is a partial schematic diagram of a charging device provided in an embodiment of this disclosure; Figure 4 This is a partial schematic diagram of a charging device provided in an embodiment of this disclosure; Figure 5 This is a schematic diagram of the structure of a rotating component provided in an embodiment of this disclosure; Figure 6 This is a partial cross-sectional schematic diagram of a rotating component provided in an embodiment of this disclosure; Figure 7 This is a partial schematic diagram of a base assembly provided in an embodiment of this disclosure; Figure 8 This is a partial schematic diagram of a charging device provided in an embodiment of this disclosure.

[0019] Figure label: 1. Base assembly; 1a. First opening; 1b. First limiting part; 1c. Second receiving groove; 11. Base body; 12. Support base; 13. Third sealing ring; 2. Rotating assembly; 2a. First through hole; 2b. Second limiting part; 2c. Second through hole; 21. Turntable; 22. Conveyor; 22a. Roller; 3. Charging assembly; 31. Cable; 32. Charging gun; 33. Base bracket; 34. First sealing ring; 35. Second sealing ring; 36. Charging base; 36a. Clamping structure; 36b. Slide rail; 4. Cover plate; 5. Limiting groove; 5a. First port; 6. Limiting buckle; 7. Operating member; 7a. Hand grip part; 7b. Chute.

[0020] The specific embodiments of the present disclosure have been clearly illustrated through the above accompanying drawings, and a more detailed description will be provided hereinafter. These drawings and text descriptions are not intended to limit the scope of the concept of the present disclosure in any way, but to explain the concept of the present disclosure to those skilled in the art by referring to specific embodiments. Detailed Description of the Embodiments

[0021] To make the objectives, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0022] With the vigorous development of the new energy vehicle industry, charging devices supporting electric vehicles have been widely used. Among them, the electric power from the charging station is transmitted to the charging port of the vehicle through the cable and the charging gun, which results in scenarios where the cable is placed on the ground and moves, and thus easily leads to the cable being rolled and rubbed.

[0023] In order to prevent the cable from dragging and rubbing on the ground, charging devices have gradually adopted the structural solution of outlet from the upper part. In the related art, in order to adapt to the differences in the position of the charging port of different vehicle models and the distance between the parking position and the charging device, the charging device is provided with a rotatable rotating assembly. The cable electrically connected to the charging station is led out from the base and passes through the outlet through hole correspondingly provided in the rotating assembly. The cable can swing relative to the base on both sides of the rotating assembly, and the retracted or extended state of the cable is realized through the retraction degree of the cable in the rotating assembly.

[0024] When the user holds the charging gun to adjust the angle, the rotating assembly will drive the entire section of cable sleeved thereon (that is, the entire length from the base lead-out end of the cable to the charging gun end) to twist together. Since the section of cable from the base lead-out end to the outlet through hole of the rotating assembly has a small curvature radius and a large bending degree, long-term use easily causes repeated large torsional deformation of the cable at the base lead-out position, which in turn leads to metal fatigue fracture or damage to the insulating layer skin, seriously reducing the reliability and safety of electrical connection, and even causing the risk of arc short circuit.

[0025] Embodiments of the present disclosure provide a charging device, referring to Figure 1 , Figure 2 and Figure 8As shown, the charging device includes a base assembly 1, a rotating assembly 2, a charging assembly 3, a cover plate 4, and a limiting groove 5.

[0026] The rotating assembly 2 is rotatably connected to the base assembly 1. The charging assembly 3 includes a cable 31 and a charging gun 32. The cable 31 is used to transmit electrical energy between the power source and the charging gun 32. The charging gun 32 is used to connect and cooperate with the charging port of the vehicle to be charged to realize the transmission of electrical energy. The first end of the cable 31 passes through the base assembly 1 and is used for electrical connection with the power source. The second end of the cable 31 passes through the rotating assembly 2 and is electrically connected to the charging gun 32. The power source can be an AC power grid, a DC power supply cabinet, an energy storage battery pack, or any other power supply device capable of providing charging power. When the rotating assembly 2 rotates, the cable 31 segment located at the first through hole 2a will rotate together with the rotating assembly 2.

[0027] The cover plate 4 is located on the side of the rotating assembly 2 away from the charging gun 32 and is connected to the base assembly 1. The limiting groove 5 is located on the cover plate 4. The extending direction of the limiting groove 5 is adapted to the movement trajectory of the first through hole 2a of the rotating assembly 2. The first through hole 2a is for the cable 31 to pass through. The size of the limiting groove 5 is adapted to the size of the cable 31. The area between the first port 5a of the limiting groove 5 and the first through hole 2a accommodates the cable 31.

[0028] The cover plate 4 is fixedly connected to the base assembly 1. Since the base assembly 1 is in a static state during use (e.g., fixed to a wall or the ground), the cable 31 between the first port 5a of the limiting groove 5 and the base assembly 1 is always constrained, reducing the degree of circumferential bending or swinging of this cable 31.

[0029] The rotating component 2 is rotatably connected to the base component 1, and the first through hole 2a is used for the cable 31 to pass through. When the user pulls or rotates the cable 31 and the charging gun 32, the rotating component 2 will rotate accordingly. However, the torsional stress generated by this rotational motion mainly acts on the cable 21 between the first port 5a of the limiting groove 5 and the charging gun 32. Due to the limiting effect of the area between the first port 5a of the limiting groove 5 and the first through hole 2a on the cable 31, the torsional stress is blocked at the first port 5a and will not be transmitted to the cable 31 located between the first port 5a and the base component 1. This reduces the degree of torsional swing of the cable 31 located between the first port 5a and the base component 1 relative to the base component 1, thereby reducing the damage or metal fatigue caused by the mutual squeezing and friction between the cable 31 and the base component 1, and thus improving the electrical connection reliability and working life of the charging device.

[0030] The charging device provided in this disclosure can be widely used in various electric vehicle charging scenarios, including but not limited to home wall-mounted AC charging piles, public DC fast charging piles, and portable chargers for vehicles. In particular, the charging device in this disclosure is especially suitable for charging scenarios that require frequent plugging and unplugging and frequent angle adjustments.

[0031] The charging devices provided in this disclosure are applicable to vehicles including but not limited to: cars, buses, trucks, and sport utility vehicles (SUVs). The vehicles can be pure electric vehicles (BEVs or EVs) or hybrid electric vehicles (HEVs), such as range-extended and plug-in hybrids.

[0032] In some embodiments, refer to Figure 3 As shown, the base assembly 1 includes a base body 11, which has a first opening 1a for the cable 31 to pass through. The charging assembly 3 also includes a base bracket 33, a first sealing ring 34, and a second sealing ring 35. The base bracket 33 houses the cable 31 and is connected to the base body 11. The first sealing ring 34 is located between the cable 31 and the base bracket 33, and the second sealing ring 35 is located between the base body 11 and the base bracket 33.

[0033] The base bracket 33 can be a hollow tubular structure, through which the cable 31 passes. The base bracket 33 acts as an intermediate support, providing a stable mounting position for the cable 31. A first sealing ring 34 is disposed between the cable 31 and the base bracket 33, sealing the radial gap between the outer wall of the cable 31 and the inner wall of the base bracket 33. A second sealing ring 35 is disposed between the base body 11 and the base bracket 33, sealing the axial gap between the outer wall of the base bracket 33 and the outer wall of the base body 11.

[0034] Two sealing rings (i.e., the first sealing ring 34 and the second sealing ring 35) form two sealing barriers. Through the multi-layer sealing structure design, external moisture and dust are effectively prevented from entering the interior of the base assembly 1 through the gap between the cable 31 and the first opening 1a, thereby improving the waterproof and dustproof level of the charging device and ensuring the insulation safety of the internal electrical connection of the base assembly 1.

[0035] The base bracket 33 serves as a transitional connector between the cable 31 and the base body 11. Through the elastic deformation of the first sealing ring 34, the rigid connection between the cable 31 and the base body 11 can be converted into a flexible connection, reducing the direct impact of the cable 31 on the base body 11 when subjected to external tensile force, and playing a buffering and vibration reduction role.

[0036] Meanwhile, the base bracket 33 facilitates the assembly and replacement of the cable 31. The cable 31 can be removed together with the base bracket 33 simply by removing the base bracket 33 from the base body 11, without disassembling the entire base assembly 1.

[0037] In some embodiments of this disclosure, the base body 11 can be a one-piece metal casting structure, a high-strength engineering plastic injection molding structure, or a metal sheet stamping and bending structure. The specific material and molding process of the base body 11 can be selected according to actual strength requirements, cost budget, and weight requirements. For example, the base body 11 is made of aluminum alloy die casting, which can ensure the structural strength of the base body 11, and also give the base body 11 good heat dissipation performance and light weight.

[0038] The outer wall of the base bracket 33 can be fixedly connected to the base body 11 by means of threaded connection, snap-fit ​​connection or screw connection. In some embodiments of this disclosure, the outer wall of the base bracket 33 has external threads, and the base body 11 has internal threads at the first opening 1a. The base bracket 33 is fixed to the base body 11 by threaded engagement. This threaded connection method facilitates assembly and disassembly and can also ensure connection strength.

[0039] In some embodiments of this disclosure, the inner wall of the base bracket 33 may be provided with an annular sealing groove, in which the first sealing ring 34 is accommodated. The sealing groove can limit the position of the first sealing ring 34, preventing it from shifting during assembly, and also ensuring that the first sealing ring 34 remains in the target position during long-term use, thus maintaining its sealing performance.

[0040] The axial direction of the first opening 1a can be perpendicular to the mounting plane of the base assembly 1, or it can be at a certain angle to the mounting plane. The specific opening direction can be adjusted according to the actual routing needs of the cable 21.

[0041] In some embodiments, refer to Figure 1 and Figure 3 As shown, the outer wall of the base body 11 has two first limiting parts 1b distributed circumferentially, and the rotating component 2 has a second limiting part 2b, which is located between the two first limiting parts 1b.

[0042] The second limiting part 2b of the rotating component 2 is engaged between the two first limiting parts 1b on the outer wall of the base body 11. When the rotating component 2 rotates relative to the base component 1, the second limiting part 2b will move between the two first limiting parts 1b.

[0043] When the rotating component 2 rotates to its limit angle relative to the base component 1, the second limiting part 2b will mechanically interfere with one of the first limiting parts 1b, thereby limiting the further rotation of the rotating component 2 and thus limiting the rotation angle range of the rotating component 2. This prevents the cable 31 from being excessively twisted or broken due to excessive rotation (e.g., infinite rotation in the same direction), thus providing physical protection.

[0044] This disclosure does not limit the circumferential angle between the two first limiting parts 1b. Specifically, it can be matched according to the movable distance of the cable 31. That is, when the second limiting part 2b abuts against one of the first limiting parts 1b, the cable 31 is in a retracted state. The length of the cable 31 on the side of the rotating component 2 facing the charging gun 32 is small, and the charging gun 32 is located far away from the user, ensuring that the cable 31 is separated from the ground to prevent the cable 31 from being attached to impurities or scratched and worn.

[0045] When the second limiting part 2b abuts against the other first limiting part 1b, the cable 31 is in an extended state. The cable 31 has a larger length on the side of the rotating assembly 2 facing the charging gun 32, and the charging gun 32 is in a position close to the user, ensuring that the cable 31 can quickly and conveniently approach the vehicle's power interface.

[0046] In some embodiments of this disclosure, the included angle between the two first limiting portions 1b (i.e., the range of angles within which the rotating component 2 can rotate) can be between 90° and 360°, including but not limited to: 90°, 150°, 180°, 225°, 270°, 300°, and 360°.

[0047] For example, referring to Figure 2, the circumferential angle between the two first limiting parts 1b is 270°, which is three-quarters of a circle. In this way, the movable cable 31 can gradually be retracted around the base body 11 to form an arc with a central angle of 270°. This angle range can meet the user's needs for different charging directions without causing the cable 31 to be torn due to excessive rotation.

[0048] It is understood that the specific number and arrangement of the first limiting part 1b and the second limiting part 2b can be adjusted according to actual needs. For example, in some embodiments not shown in this disclosure, three or more first limiting parts 1b can be provided, and correspondingly multiple second limiting parts 2b can be provided to achieve more complex limiting logic, such as multi-level limiting or unidirectional limiting. These variations are all within the protection scope of this disclosure.

[0049] In some embodiments of this disclosure, the contact surfaces of the first limiting part 1b and the second limiting part 2b are provided with elastic buffer pads (e.g., rubber pads, silicone pads) to absorb the impact force generated during contact limiting, reduce impact noise, and protect the limiting structure from damage by rigid collisions.

[0050] In some embodiments, refer to Figure 1 As shown, the base assembly 1 also includes a support base 12, which is located on the side of the rotating assembly 2 facing the charging gun 32 and is connected to the base body 11. After the cable 31 passes through the rotating assembly 2, it extends toward the charging gun 32, and the support base 12 is located beside the extension of the cable 31 and is fixed to the base body 11.

[0051] The support base 12 is used to bear the gravity load of the base body 11, the rotating component 2 and the limiting component 4, so as to prevent the load from acting directly on the rotating connection of the rotating component 2, and to prevent the base body 11 from bearing both the gravity load and the rotational impact load of the rotating component 2, making the rotation movement easier and extending the working life of the base body 11.

[0052] This disclosure does not limit the form of the support base 12, and it can be matched and set according to the usage scenario of the charging device.

[0053] For example, if the charging device is a vertical component, the support base 12 can be perpendicular to the ground so that it can be buried in the ground or connected to a corresponding structure on the ground. It can be a detachable connection method such as threaded fastening or snap-fit ​​connection, or a non-detachable connection method such as glue application or welding.

[0054] In another example, if the charging device is wall-mounted, the support base 12 can be parallel to the ground or at a certain angle to the ground so that the connection between the support base 12 and the wall, mounting bracket, mounting rod and other components can be a detachable connection method such as threaded fastening or snap-fit ​​connection, or a non-detachable connection method such as glue application or welding.

[0055] In some embodiments, refer to Figure 7 As shown, the base body 11 has a second receiving groove 1c on the side facing the support base 12. The base assembly 1 also includes a third sealing ring 13, which is located in the second receiving groove 1c and abuts against the support base 12. This effectively prevents external moisture and dust from entering the interior of the base assembly 1 through the gap between the base body 11 and the support base 12, thereby improving the waterproof and dustproof level of the charging device and ensuring the insulation safety of the internal electrical connections of the base assembly 1.

[0056] In some embodiments, refer to Figure 1 and Figure 2As shown, the charging device also includes a limiting buckle 6, which is connected to the cover plate 4 and the cable 31 located between the base assembly 1 and the first port 5a.

[0057] The limiting buckle 6 can further increase the positional stability of the cable 31 between the base assembly 1 and the first port 5a, further reduce the damage or metal fatigue caused by the mutual squeezing and friction between the cable 31 and the base assembly 1, and thus improve the electrical connection reliability and working life of the charging device.

[0058] The cover plate 4 separates the space on the side of the first through hole 2a of the rotating component 2 away from the charging gun 32 from the external exposed space, thus providing a certain degree of protection for the rotating component 2. At the same time, the side of the cover plate 4 facing the rotating component 2 has a limiting groove 5. The size of the limiting groove 5 is adapted to the cable 31, which guides and limits the gradually retracting cable 31, making it coiled in a regular shape within the limiting groove 5, rather than bending randomly. This prevents the cable 31 from having an excessively small bending radius or from piling up messily, thus preventing local stress concentration in the cable 31.

[0059] In some embodiments of this disclosure, the limiting groove 5 can be a spiral groove, and the cable 31 is coiled along the spiral groove. This makes the coiling of the cable 31 more orderly and uniform, and avoids the cable 31 from crossing and overlapping in the groove.

[0060] In some other embodiments of this disclosure, the inner wall of the limiting groove 5 may be provided with a plurality of arc-shaped guide protrusions, which are used to guide the winding direction of the cable 31 and further ensure the orderly winding of the cable 31.

[0061] The matching of the limiting groove 5 with the cable 31 means that the width and depth of the limiting groove 5 match the diameter of the cable 31, allowing the cable 31 to be accommodated in the limiting groove 5 without excessive wobbling space in the width direction of the limiting groove 5, while also preventing the cable 31 from being squeezed due to its small size. This matching relationship provides sufficient constraint on the cable 31 without causing excessive pressure on the cable 31 and damaging its outer sheath.

[0062] In some embodiments, refer to Figure 4 As shown, the rotating assembly 2 includes a connected turntable 21 and a conveyor 22. A first through hole 2a is located on the turntable 21. The turntable 21 has a second through hole 2c, which accommodates the base assembly 1 and is used to enable the turntable 21 to rotate relative to the base assembly 1. The conveyor 22 is located on the side of the first through hole 2a away from the charging gun 32. The conveyor 22 has multiple rollers 22a and is used to roll the conveyor cable 31.

[0063] The conveyor 22 is fixed on the turntable 21 and rotates with it. The conveyor 22 is located on the side of the first through hole 2a away from the charging gun 32. As the cable 31 gradually retracts or extends, the cable 31 passes through the conveyor 22 and comes into contact with multiple rollers 22a. Friction is generated between the cable 31 and the rollers 22a. This friction drives the rollers 22a to rotate around their own axis. Since the rollers 22a are passively rotated, the cable 31 and the rollers 22a are in rolling contact. That is, the friction between the cable 31 and the rollers 22a is rolling friction resistance. This can reduce the resistance when the cable 31 extends or retracts, making the user's operation easier, and can also effectively prevent the outer sheath of the cable 31 from being scratched and worn due to excessive friction.

[0064] In some embodiments of this disclosure, a rolling bearing (e.g., a deep groove ball bearing, a needle roller bearing, etc.) can be provided at the second through hole 2c, and the turntable 21 is rotatably connected to the base assembly 1 through the rolling bearing. The provision of the rolling bearing can reduce the rotational friction between the turntable 21 and the base assembly 1, making the rotation of the turntable 21 more flexible and effortless, while also reducing the wear of the rotating parts of the turntable 21 and extending the service life of the turntable 21.

[0065] The rollers 22a of the conveyor 22 also guide and limit the cable 31. Multiple rollers 22a together form an approximately arc-shaped channel in which the cable 31 passes. When the cable 31 is subjected to radial force, the rollers 22a can limit the radial displacement of the cable 31 and ensure that the cable 31 moves along the preset axial direction.

[0066] In some embodiments of this disclosure, the number of rollers 22a may be three, four, or more. Exemplarily, the conveyor 22 includes four rollers 22a, which are evenly distributed circumferentially.

[0067] In some embodiments of this disclosure, the outer peripheral surface of the roller 22a may be provided with an arc-shaped groove, the radius of curvature of which is adapted to the radius of the cable 31. When the cable 31 contacts the roller 22a, a portion of the cable 31 is accommodated in the arc-shaped groove. This increases the contact area between the cable 31 and the roller 22a, reduces contact pressure, further reduces wear on the cable 31, and also improves the stability of the guide, preventing the cable 31 from slipping off between the rollers 22a.

[0068] In some embodiments, refer to Figure 5 As shown, the turntable 21 has a circular structure, and the center of the second through hole 2c coincides with the center of the turntable 21.

[0069] The second through hole 2c is the rotational engagement center between the rotating component 2 and the base component 1, i.e., the rotation axis. The rotation axis is set at the exact center (center of the circle) of the disk structure to ensure that the mass distribution of the turntable 21 is uniform and symmetrical with respect to the rotation axis.

[0070] When the turntable 21 rotates relative to the base assembly 1, the centrifugal forces of each part of the turntable 21 cancel each other out, reducing the possibility of generating additional eccentric torque, minimizing the rotational inertia of the turntable 21, resulting in better rotational smoothness, and avoiding jamming or shaking noise caused by eccentricity of the turntable 21.

[0071] In some embodiments, refer to Figure 5 As shown, in the first direction, the distance from the first through hole 2a to the second through hole 2c is greater than the distance from the first through hole 2a to the outer edge of the turntable 21. The first direction is the direction of the line connecting the center of the second through hole 2c and the center of the first through hole 2a.

[0072] Thus, the second through hole 2c is located in the area near the outer edge of the turntable 21. When the turntable 21 rotates relative to the base assembly 1, the closer the position is to the outer edge of the turntable 21, the greater its tangential displacement (swing amplitude). The passage position of the cable 31 (i.e., the second through hole 2c) is close to the outer edge, so that the cable 31 has a relatively gentle radius of curvature when it bends. This can reduce the bending stress of the cable 31, extend the service life of the cable 31, and prevent the cable 31 from getting caught in the gap between the center of the turntable 31 and the base assembly 1 during rotation, thereby preventing the cable 31 from being pinched.

[0073] In some embodiments, refer to Figure 1 As shown, the charging device also includes an operating member 7, which is located on the side of the rotating assembly 2 facing the charging gun 32 and is connected to the rotating assembly 2. The operating member 7 has a hand grip 7a for the user to hold and apply external force.

[0074] The grip 6a provides a clear gripping area for the user. When the user needs to change the extension direction of the cable 31, they only need to hold the grip 6a and apply circumferential force to rotate the turntable 21, thereby changing the position of the first through hole 2a. This allows for precise and effortless adjustment of the orientation of the charging gun 32 and the cable 31 without having to directly touch the cable 31 or the turntable 21, which has greater rotational resistance, thus improving the convenience and comfort of the user's operation.

[0075] In some embodiments of this disclosure, the grip portion 6a may have an ergonomic shape, such as an arc surface, anti-slip texture, or finger grooves, to improve grip comfort and anti-slip properties. The surface of the grip portion 6a may be covered with a soft material (such as rubber, silicone, etc.) to further improve the grip feel.

[0076] There are several possible connection methods between the operating component 6 and the rotating assembly 2. In some embodiments of this disclosure, the operating component 6 can be fixed to the turntable 21 by means of screws, rivets, or welding. In other embodiments of this disclosure, the operating component 6 and the turntable 21 can be an integrally formed structure to improve connection strength and simplify assembly process.

[0077] In some embodiments, refer to Figure 6 As shown, the operating component 7 has a sliding groove 7b, and the charging component 3 also includes a charging base 36. One end of the charging base 36 has a snap-fit ​​structure 36a, which is used to snap and fix the charging gun 32. The other end of the charging base 36 has a slide rail 36b, which is adapted to the sliding groove 7b.

[0078] During the movement of the cable 31 and the charging gun 32, the charging gun 32 can be placed on the charging base 36 and its movement is restricted by the charging base 36. This prevents the charging gun 32 from lacking protection and swinging randomly during the lifting and lowering process, thereby preventing the charging gun 32 from swinging randomly and causing impurities to adhere, scratches and wear, or threatening the personal safety of the user.

[0079] This disclosure does not limit the snap-fit ​​scheme between the snap-fit ​​structure 36a and the charging gun 32. For example, the snap-fit ​​structure 36a is a snap-fit ​​protrusion, and the charging gun 32 has a snap-fit ​​groove. The charging gun 32 and the charging base 36 are fixed by the snap-fit ​​protrusion and the snap-fit ​​groove.

[0080] In another example, the snap-fit ​​structure 36a is a snap-fit ​​groove, and the charging gun 32 has a snap-fit ​​protrusion. The snap-fit ​​protrusion and the snap-fit ​​groove are used to fix the charging gun 32 and the charging base 36.

[0081] As another example, the snap-fit ​​structure 36a is a cavity structure, and the corresponding connection position of the charging gun 32 is interference-fitted with the snap-fit ​​structure 36a, thereby fixing the charging gun 32 and the charging base 36.

[0082] This disclosure does not limit the interface shape of the slide groove 7b. It can be matched and set according to the connection strength requirements between the slide rail 36b and the slide groove 7b, processing costs, etc., such as: rectangular, dovetail, V-shaped, circular, T-shaped, etc.

[0083] In some embodiments of this disclosure, a damping structure (such as damping grease, spring damper, etc.) may be provided between the slide rail 36b and the slide groove 7b, so that the charging base 36 can remain in the predetermined position after sliding to the predetermined position and will not slide on its own due to gravity or vibration.

[0084] In some embodiments of this disclosure, limit stops may be provided at both ends of the slide groove 7b to prevent the charging base 36 from slipping out of the slide groove 7b.

[0085] In some embodiments of this disclosure, a charging gun 32 detection sensor (such as a micro switch, Hall sensor, etc.) may be provided at the snap-fit ​​structure 36a of the charging base 36 to detect whether the charging gun 32 has been inserted back into the charging base 36 and to send the detection signal to the control system of the charging device so that the control system can execute the corresponding control logic (such as stopping charging, entering standby mode, etc.).

[0086] In summary, the charging device provided in this disclosure has the following significant advantages over the prior art: I. The risk of cable torsion damage is significantly reduced. This disclosure, by setting a limiting component 4, ensures that the portion of the cable 31 located between the first port 5a of the limiting groove 5 and the base component 1 is unaffected by the rotational movement of the rotating component 2 and remains fixed. Therefore, the connection point between the first end of the cable 31 and the power supply, and the location where the cable 31 passes through the base component 1, are not subjected to torsional stress. This avoids the risk of damage such as fatigue fracture of the internal conductor metal and cracking of the insulation layer due to repeated torsion at these locations, greatly improving the electrical connection reliability and service life of the charging device.

[0087] II. Excellent waterproof and dustproof performance This disclosure constructs two independent sealing barriers between the cable 31 and the base body 11 through the cooperative arrangement of the base bracket 33, the first sealing ring 34, and the second sealing ring 35. The first sealing ring 34 seals the gap between the cable 31 and the base bracket 33, while the second sealing ring 35 seals the gap between the base bracket 33 and the base body 11. The two sealing rings form a double protection; even if one sealing ring fails due to aging over long-term use, the other sealing ring can still ensure an effective seal, ensuring the safety of the internal electrical components of the charging device. This double-sealing structure enables the charging device to meet high protection requirements and is suitable for harsh environments such as outdoor rain, snow, and sandstorms.

[0088] III. Controllable rotation angle, safe and reliable operation. This disclosure utilizes the cooperation between the second limiting part 2b on the rotating component 2 and the two first limiting parts 1b on the base body 11 to limit the rotation angle of the rotating component 3 within a preset safety range, thus preventing excessive torsional damage to the cable 31 caused by infinite rotation in the same direction. Simultaneously, the limiting structure achieves its limiting function through physical interference, without relying on any electronic or sensor components, exhibiting extremely high reliability and stability. It will not fail even after prolonged use, achieving true physical foolproof protection.

[0089] IV. Smooth cable winding and unwinding with minimal wear on the sheath. This disclosure transforms the sliding friction of the cable 31 during transmission into rolling friction by using multiple rollers 22a in the transmission component 22, making the extraction and retraction of the cable 31 more effortless and smoother. The wear on the outer sheath of the cable 31 from rolling friction is far less than that from sliding friction, effectively extending the service life of the cable 31. Simultaneously, the multiple rollers 22a provide uniform circumferential guidance and positioning for the cable 31, ensuring the stability of the cable 31's movement along the preset axial direction and preventing the cable 31 from shifting or jamming during transmission.

[0090] 5. Cables should be stored in an orderly manner to prevent pile-up and interference. This disclosure provides a dedicated storage space for cable segment 31 by setting the upper limit groove 5 in the limiting component 4, so that cable 31 can be coiled in the limiting groove 5 in an orderly manner, avoiding disorderly accumulation and messy coiling of cable 31 inside the base component 1, preventing cable 31 from interfering with or being squeezed by other components (such as terminals, circuit boards, etc.), and improving the space utilization and electrical safety inside the charging device.

[0091] VI. The supporting structure reduces the load and extends the service life. This disclosure, through the setting of the support base 12, bears most of the gravity load of the base body 11, the rotating component 2 and the limiting component 4, reduces the load of gravity load on the rotating connection position of the rotating component 2, reduces the wear of the rotating connection position and extends the service life of the rotating component 2.

[0092] VII. Easy to operate and provides a good user experience. This disclosure provides users with a dedicated operating handle through the design of the operating component 5. Users can easily drive the rotating component 2 to rotate simply by holding the grip 5a, without having to directly pull the cable 31 or the charging gun 32, making operation more effortless, precise, and convenient. The ergonomic design of the grip 5a further enhances grip comfort and improves the user experience.

[0093] 8. The charging gun position is adjustable, making it highly adaptable. This disclosure utilizes the sliding engagement between the groove 7b on the operating component 5 and the slide rail 36b on the charging base 36 to allow the charging base 36 to be adjusted in position relative to the operating component 5. This adapts to the differences in charging port positions across different vehicles, improving the versatility and compatibility of the charging device. Simultaneously, the snap-fit ​​structure 36a on the charging base 36 provides a stable and secure storage method for the charging gun 32, making it easy to place and store, and ensuring reliable storage.

[0094] 9. The overall structure is compact, and assembly and maintenance are convenient. The connections between the components in this disclosure are clear and logical. The base assembly 1, rotating assembly 2, charging assembly 3, limiting assembly 4, and operating component 5 adopt a modular design, with each module being relatively independent, facilitating assembly and disassembly. When a component malfunctions, that component can be replaced individually without replacing the entire charging device, reducing maintenance costs. Furthermore, the compact structural design of each component occupies little space, contributing to the miniaturization and lightweight design of the charging device.

[0095] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0096] It is understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0097] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0098] It is further understood that the terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0099] It is further understood that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the two components; they can refer to a direct connection between two components without the presence of other components, or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0100] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0101] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the solutions disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the scope of the claims.

[0102] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A charging device, characterized in that, The charging device includes a base assembly (1), a rotating assembly (2), a charging assembly (3), a cover plate (4), and a limiting groove (5). The rotating component (2) is rotatably connected to the base component (1); The charging assembly (3) includes a cable (31) and a charging gun (32). The first end of the cable (31) passes through the base assembly (1) and is used for electrical connection with the power supply. The second end of the cable (31) passes through the rotating assembly (2) and is electrically connected to the charging gun (32). The cover plate (4) is located on the side of the rotating assembly (2) away from the charging gun (32) and is connected to the base assembly (1). The limiting groove (5) is located on the cover plate (4). The extending direction of the limiting groove (5) is adapted to the movement trajectory of the first through hole (2a) of the rotating assembly (2). The first through hole (2a) is for the cable (31) to pass through. The area between the first port (5a) of the limiting groove (5) and the first through hole (2a) accommodates the cable (31).

2. The charging device according to claim 1, characterized in that, The base assembly (1) includes a base body (11) having a first opening (1a) for the cable (31) to pass through. The charging assembly (3) further includes a base bracket (33), a first sealing ring (34) and a second sealing ring (35). The base bracket (33) is fitted with the cable (31) and connected to the base body (11). The first sealing ring (34) is located between the cable (31) and the base bracket (33), and the second sealing ring (35) is located between the base body (11) and the base bracket (33).

3. The charging device according to claim 2, characterized in that, The outer wall of the base body (11) has two first limiting parts (1b) distributed circumferentially, and the rotating component (2) has a second limiting part (2b) located between the two first limiting parts (1b).

4. The charging device according to claim 2, characterized in that, The base assembly (1) also includes a support base (12), which is located on the side of the rotating assembly (2) facing the charging gun (32) and is connected to the base body (11).

5. The charging device according to claim 1, characterized in that, The charging device also includes a limiting buckle (6), which is connected to the cover plate (4) and the cable (31) located between the base assembly (1) and the first port (5a).

6. The charging device according to claim 1, characterized in that, The rotating assembly (2) includes a connected turntable (21) and a conveyor (22). The first through hole (2a) is located on the turntable (21). The turntable (21) has a second through hole (2c) that accommodates the base assembly (1) and is used to enable the turntable (21) to rotate relative to the base assembly (1). The conveyor (22) is located on the side of the first through hole (2a) away from the charging gun (32). The conveyor (22) has a plurality of rollers (22a) and is used to roll and convey the cable (31).

7. The charging device according to claim 6, characterized in that, The turntable (21) has a circular structure, and the center of the second through hole (2c) coincides with the center of the turntable (21).

8. The charging device according to claim 7, characterized in that, In a first direction, the distance from the first through hole (2a) to the second through hole (2c) is greater than the distance from the first through hole (2a) to the outer edge of the turntable (21), wherein the first direction is the direction of the line connecting the center of the second through hole (2c) and the center of the first through hole (2a).

9. The charging device according to claim 1, characterized in that, The charging device also includes an operating member (7), which is located on the side of the rotating assembly (2) facing the charging gun (32) and connected to the rotating assembly (2). The operating member (7) has a hand grip (7a) for the user to hold and apply external force.

10. The charging device according to claim 9, characterized in that, The operating element (7) has a groove (7b); The charging assembly (3) further includes a charging base (36), one end of which has a snap-fit ​​structure (36a) for snapping and fixing the charging gun (32), and the other end of which has a slide rail (36b) adapted to the slide groove (7b).

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